EP4371175A2 - Machine, procédé et produit intermédiaire pour l'industrie produisant des cellules énergétiques - Google Patents

Machine, procédé et produit intermédiaire pour l'industrie produisant des cellules énergétiques

Info

Publication number
EP4371175A2
EP4371175A2 EP22747657.9A EP22747657A EP4371175A2 EP 4371175 A2 EP4371175 A2 EP 4371175A2 EP 22747657 A EP22747657 A EP 22747657A EP 4371175 A2 EP4371175 A2 EP 4371175A2
Authority
EP
European Patent Office
Prior art keywords
cutting
segments
drum
web
transport
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22747657.9A
Other languages
German (de)
English (en)
Inventor
Michael Kleine Wächter
Karsten Meinke
Manfred Folger
Thomas Meins
Marc Kessler
Michael Lüneburg
Jan Kreysern
Marcus Wagner
Nils Hofmann
Daniel Diedrich
Nils Klaper
Ralf Grassmel
Michael Haul
Mathias Kelm
Patrick Gögel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koerber Technologies GmbH
Original Assignee
Koerber Technologies GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koerber Technologies GmbH filed Critical Koerber Technologies GmbH
Publication of EP4371175A2 publication Critical patent/EP4371175A2/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/083—Devices involving movement of the workpiece in at least one axial direction
    • B23K26/0838—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B26D1/405—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
    • B65H5/226—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction rollers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/33—Rotary suction means, e.g. roller, cylinder or drum

Definitions

  • the present invention relates to a machine, a method and an intermediate product for the power cell manufacturing industry.
  • Energy cells or energy storage cells are used for galvanic accumulators, for example in motor vehicles, other land vehicles, ships and airplanes, in which a considerable amount of energy has to be stored so that it can be called up over longer periods of time.
  • energy cells have a structure made up of a large number of segments stacked to form a stack. These segments are each alternating anode sheets and cathode sheets, also referred to as electrodes, separated from one another by separator sheets, also made as segments.
  • the cell stack is enclosed in a cover, also known as a pouch.
  • the pouch is then filled with an electrolyte so that, for example, a lithium-ion battery or a corresponding preliminary stage of a lithium-ion battery is formed.
  • Devices for producing battery cells are known, for example, from WO 2020/192845 A1, WO 2016/041713 A1, DE 102017216 138 A1 and DE 102017216213 A1.
  • Battery cells for example for electromobility, are now manufactured on production systems with an output of 100 to 240 mono cells per minute. These work partially or continuously with clocked, discontinuous movements, such as back and forth movements, and are therefore limited in terms of production output. Most of the known machines work in the single-sheet stacking process, e.g. "pick and place", with the disadvantage of comparatively slow processing. The laminating of cell formations is not possible here.
  • Another known approach is a machine with continuously running webs of material and cycled and/or discontinuously working tools, such as separating knives, tools for changing the pitch.
  • a device is known from WO 2019/092585 A2, which has two cutting drums which are driven to rotate in opposite directions and each have a cutting blade.
  • the cutting drums are arranged in such a way that the cutting circles of the cutting edges defined by the cutting edges of the cutting knives do not overlap, with the distance between the cutting circles being 1 to 10 ⁇ m.
  • individual electrode sheets i.e. cut anode or cathode sheets, individual separator sheets or individual monocells or separator-electrode composite elements, generally individual sheet segments or product segments, from the production process, for example for quality testing or to meet certain test criteria to be able to check for correct detection by the internal machine sensors, as well as to calibrate the sensors as an essential function when commissioning an online measuring device.
  • individual product segments with connection points so-called splices, which are considered product defects, should be removed from the production process in a targeted manner to ensure that they do not end up in the end product. Removal should be made possible during the ongoing production process.
  • switches are required in the production machine, on which a product flow of web sections or product segments, such as electrodes, separator sheets or monocells, can be separated into several possible paths.
  • a pouch In certain types of battery cell production, layers of electrodes and separators are built up and enclosed in a cover, called a pouch.
  • the pouch is filled with an electrolyte so that, for example, a lithium-ion battery or a corresponding preliminary stage of a lithium-ion battery is formed.
  • electrolyte By sealing the pouch, electrodes, separators and electrolyte are protected from environmental influences to such an extent that special climate control of the environment for further processing and/or use can be dispensed with.
  • the invention is based on the object of providing a machine and a method for the industrial production of energy cells at high speed and high quality, as well as an intermediate product, which are improved over the prior art with regard to a large number of individual aspects.
  • a machine according to the invention for the industry producing energy cells accordingly has one or more of the following improved devices: a device for cutting or perforating a material web; a cutting device for cutting segments for power cells from a continuous web; a separating device for cutting and separating segments for energy cells from a fed continuous web; a cell stacking system and/or a cell stacking device for segments of energy cells, as well as a sub-device thereof and a corresponding sub-method; a processing device for processing segments of power cells; a device for merging and/or processing a pouch film and a cell stack; produce a device for removing or branching off product segments from a product flow of the energy cells ing industry; a device for producing an intermediate product with a conductor foil, a contact tab and at least one retaining tab and/or a device for handling an intermediate product by means of the retaining tab; a device for producing a sealed pouch with a temporary sealed seam and/or a device for separating and/or separating the temporary sealed seam of the pouch.
  • the invention also provides corresponding methods and intermediate products for the industry producing energy cells.
  • a pouch is in particular a cover or bag for accommodating at least one composite element or a cell stack.
  • the pouch consists of a flexible material, in particular a film, which is also referred to as a pouch film.
  • the pouch is expediently sealed in an electrolyte-tight manner.
  • rotating or rotatable body or rotationally drivable body can be used generically within the meaning of the invention in the places that specifically name a drum, in particular the drums listed above and/or the drums addressed below.
  • a first aspect of the invention according to claim 2 provides a machine for the power cell manufacturing industry, the machine comprising at least: a feeding section for feeding at least one endless separator sheet and a continuous row of individual electrodes; a collecting and connecting section for superimposing the supplied materials, thereby forming a material formation of superimposed materials, with a connecting device for connecting the superimposed materials with each other, thereby forming an endless composite separator-electrode web; and a cutting and stacking section having a cutter for cutting the separator-electrode composite sheet into individual composite units and a stacking station for stacking composite units to form a composite unit stack.
  • the further object is to provide a machine and a method that has a significant increase in performance compared to conventional machines and methods.
  • the sections of the machine are designed as substantially continuously driven transport devices, and / or the transport speed in the feeding, collecting and connecting section is constant or is in a range of ⁇ 25% around an average transport speed, and/or the transport speed in the feeding, collecting and connecting section is at least 300 segments per minute, preferably at least 400 segments per minute, more preferably at least 600 segments per minute.
  • the object is therefore achieved by continuously operating devices and the use of continuously running process steps, as a result of which the production speed can be significantly increased to at least 300 segments per minute compared to the prior art.
  • the invention is associated with reduced energy costs, fewer operating personnel required and a smaller machine footprint, as a result of which the production costs can be reduced overall.
  • the transport speed in the feeding, collecting and connecting section is constant or is within a range of ⁇ 25%, preferably ⁇ 10%, more preferably ⁇ 5% of an average transport speed in order to achieve consistently high and constant production output to reach.
  • the cutting and stacking section is designed entirely or at least predominantly with bodies driven in rotation, in particular drums and/or stamps driven in rotation.
  • bodies driven in rotation in particular drums and/or stamps driven in rotation.
  • the production of composite units or monocells on continuously rotating bodies, in particular continuously rotating drums and/or stamps, and the use of rotating cutting apparatus enables a continuous process for the production of monocells or similar material units throughout.
  • the disadvantages mentioned at the outset are thus overcome.
  • the inclusion of the materials on bodies that are driven in rotation, in particular drums and/or stamps offers a high degree of flexibility. Other rotating bodies, especially drums to implement new functions can be added as needed.
  • the materials can be placed on an endless belt device for processing and later picked up again by a rotatable body, in particular a drum.
  • delivery from a rotatable body, in particular a drum, to an endless belt device is also possible.
  • the optimal method and the optimal device can be provided for each process step.
  • Another advantage is that there are no significant relative movements at the contact surfaces between material-carrying machine parts and the material. Disadvantageous slip and the abrasion and dirt caused by it, which reduce the quality of the battery cell, can be largely avoided. The reject rate can thus be reduced.
  • the collecting and connecting section has a collecting device, in particular a rotatable collecting device, in particular a collecting drum, on which the supplied materials are brought together and placed one on top of the other.
  • a collecting device in particular a rotatable collecting device, in particular a collecting drum, on which the supplied materials are brought together and placed one on top of the other.
  • the merging of all materials on a continuously rotating collecting device, especially a collecting drum, promises a high level of process reliability.
  • a collecting device can be provided in the form of an endless belt device or a section of an endless belt device.
  • the feed section preferably has at least one electrode production section with at least one cutting device for cutting an endlessly fed electrode web into individual electrodes.
  • the cutting apparatus advantageously has a knife shaft with knives in order to be able to continuously cut electrodes quickly and effectively.
  • the cutting apparatus also includes a cutting drum having grooves for engaging the knives.
  • the electrode production section preferably has a pitch changing device, in particular a pitch changing drum, for spacing the cut electrodes from one another in the conveying direction. This enables the manufacture of mono cells where the separator sheets are wider than the electrodes, which is a common requirement.
  • the connecting device preferably has one or more laminating rollers for the laminating connection of the material formation.
  • the collecting and connecting section therefore preferably has a heating device for heating the material formation before connecting.
  • the machine preferably has at least one cooling device downstream of the heating device for cooling parts heated by the heating device, in particular the separator-electrode composite web and/or a heated endless belt.
  • the materials can also be joined by cold lamination.
  • the collecting and connecting section is designed as a conveyor path that is linear at least in sections.
  • the conveyor section advantageously has at least one endless belt device with a continuously driven endless belt.
  • one or more endless belt devices are therefore provided in this case instead of the collecting and laminating drum. In this version, too, the materials can be transported and processed without slippage.
  • the at least one endless belt is set up and arranged to transfer heat from a or the heating device through the endless belt to the material formation.
  • the heating device in the machine can be thermally encapsulated more easily than in the case of a laminating drum, a modular approach is easier to implement and the heating section defined by the heating device can be lengthened more easily.
  • At least one lower endless belt device arranged below the material formation and/or at least one upper endless belt device arranged above the material formation is advantageously provided in order to enable heating and/or lamination on both sides.
  • the endless belt or belts can additionally or alternatively be used to convey the material formation through the conveying path.
  • the conveying section has at least one cooling device for cooling the endless belt heated by the heating device, in order to withdraw heat that is no longer required from the machine after lamination.
  • the cooling device is preferably arranged on the return side of the endless belt, which contributes to reducing the space required.
  • the endless band can advantageously be made of metal, for example stainless steel, which promotes heat transfer from the heating device to the material formation.
  • the endless belt can have a friction-reducing coating, which is advantageous in particular in the case of contact between the material formation and the endless belt, in order to avoid the quality of the material formation being impaired by friction.
  • the conveying path preferably has a further endless belt device or a section of an endless belt device for bringing together and superimposing the supplied materials and forming the material formation.
  • the further endless belt device or the corresponding section of an endless belt device is then provided instead of the collecting drum in the embodiment mentioned at the outset. In the case of downstream heat-transferring endless belt devices, this is less complex and overall cheaper than a collecting drum.
  • At least one testing device for testing properties of the separator-electrode composite web is preferably arranged downstream of the connecting device in the conveying direction.
  • At least one testing device for testing properties of the composite units, in particular the position of the electrodes and/or electrical properties is preferably arranged downstream of the cutting device in the conveying direction. This is advantageous in order to be able to measure important quality properties of the separator-electrode composite track and/or the composite units during production in the machine.
  • an ejector device driven in particular in rotation in particular an ejector drum driven in rotation, can be arranged for ejection by the testing device and/or the testing device as combined units assessed as defective. In this way, a consistently perfect quality of the cells in the cell stack is ensured.
  • the invention also relates to a method for the industry producing energy cells, in particular for operating a machine according to the invention.
  • the method has at least the following steps: feeding in at least one endless separator web and a continuous row of individual electrodes; bringing together and superimposing the supplied materials, thereby forming a material formation of superimposed materials, and bonding the superimposed materials together, thereby forming an endless composite separator-electrode web; cutting the separator-electrode composite web into individual composite units and stacking composite units to form a composite unit stack.
  • the steps are carried out by means of essentially continuously driven transport devices, the transport speed is kept constant in the feeding, collecting and connecting section or in a range of ⁇ 25% around an average transport speed, and/or the transport speed is in the feeding, collecting and bonding section at least 300 segments per minute, preferably at least 400 segments per minute, more preferably at least 600 segments per minute, and/or the orientation of the bonding units is changed several times in the cutting and stacking section.
  • the latter feature is achieved in particular by the advantageous use of rotating bodies, in particular drums and/or punches, in the cutting and stacking section.
  • a second aspect of the invention provides a device for cutting or perforating a material web for a machine in the energy cell-producing industry, comprising a rotatable cutting body, in particular a cutting drum, on which a material web is transported in a transport direction, and a laser cutting device for Cutting the web of material transversely to the direction of transport to produce individual web segments by means of a laser beam.
  • the further object is to provide a device for cutting a material web that is gentle on the surface, produces an even cut and/or avoids or at least significantly reduces the contamination of the surfaces and the disadvantages associated with a sharp-edged cut product.
  • the laser cutting device is arranged and set up such that the laser beam is directed from the inside of the body, in particular inside the drum, onto the lateral surface of the cutting body.
  • the cutting body can be designed as a cutting drum.
  • the cutting body has a passage opening. The laser beam passing from the inside of the body, in particular the inside of the drum, to the outside through the passage opening impinges on the web of material to be cut.
  • the interior of the cutting body i.e. the space enclosed by the casing of the cutting body, is cut out.
  • the angle of intersection ⁇ between the laser beam and the normal to the material web plane in a plane perpendicular to the axis of rotation of the cutting body can be significantly reduced compared to cutting from the outside as in the prior art.
  • the cutting of the web of material conceptually generally also includes the perforation of the web of material, which is to be understood as cutting in the form of points or sections.
  • the axis of rotation of the cutting body is also referred to below as the body axis, in particular the drum axis.
  • the invention is not limited to cutting an electrode web, but can also be used, for example, for cutting a separator-electrode composite web and, more generally, a single-layer or multi-layer web.
  • the invention can be implemented by locating the exit point or the final turning point inside the cutter body.
  • the exit point is the point at which the laser beam exits the optical beam delivery system.
  • the exit point is the place where the laser beam is last deflected by a beam deflection element, for example a scanner or mirror, if necessary (last deflection point or deflection point for short), before it hits the material web to be cut.
  • the position of the laser i.e. the laser beam generator itself, is generally not important within the scope of the invention, it can be arranged inside or outside the cutting body depending on the space requirements and in the latter case, for example, radiate axially or axially parallel or collinear into the cutting body.
  • the laser cutting device is particularly advantageously arranged and set up in such a way that the laser beam strikes the material web starting from the axis of rotation of the cutting body.
  • This can be achieved by arranging the exit or deflection point on the center axis or axis of rotation of the cutting body, ie in a cross section in the center of the body, in particular the center of the drum of the cutting drum.
  • a right-angled cut surface can be produced, since in this embodiment the above-mentioned te cutting angle a is equal to zero.
  • due to the laser beam coming from the body axis, in particular the drum axis it always hits the material to be cut perpendicularly in a plane perpendicular to the axis of rotation.
  • a positioning of the exit or deflection point that deviates from the axis of rotation of the cutting body is possible if a small cutting angle ⁇ deviating from zero is tolerable.
  • the web material is cut while it rests on the cutting body, in particular the cutting drum, which is cylindrical for example. Due to the arrangement of the material web to be cut lying on the body surface, in particular the drum surface, and the laser beam coming from the inside, a large part of the combustion products remain in a narrow spatial environment, namely the body interior, in particular the drum interior, and can therefore be extracted relatively well.
  • a suction device is therefore preferably provided, which is arranged and set up for sucking off particles produced by the laser cutting from the interior of the body, in particular the interior of the drum. As a result, contamination of the surface can be largely avoided.
  • the suction device is preferably arranged between the body shell, in particular the drum shell, and the laser cutting device and either circumferentially, in a stationary manner or preferably following the orientation of the exiting laser beam, which will be explained in more detail later.
  • the suction device makes it possible to reliably keep the resulting combustion materials or particles away from the optical elements of the laser cutting device on the one hand and to suck them off as completely as possible on the other. From the suction device can be designed as part of the cutting body or as part of the laser cutting device.
  • At least part of the laser cutting device is mounted in a linearly displaceable manner along or parallel to the axis of rotation of the cutting body, claim 6.
  • This aspect of the invention is based on the task of ensuring a consistently high cutting quality regardless of the transport or To achieve the production speed of the material web (web speed).
  • the beam deflection element is advantageously displaced by means of a linear drive unit and/or a linear axis while the material web is being transported on the cutting body, and preferably at a constant speed, in order to achieve a preferred constant cutting speed and thus a consistent cutting quality regardless of the web speed.
  • the displacement speed can be selected within limits to achieve an optimal cutting result.
  • Adaptation to the web speed can take place by means of a pivoting or rotating movement about the axis of rotation of the cutting body, which is described in more detail below.
  • the decoupling of the linear displacement from the pivoting or rotary movement enables an even or constant cutting speed that is decoupled from the production or web speed and thus a consistently high cutting quality.
  • the displaceable part of the laser cutting device is preferably a beam deflection element for deflecting the laser beam.
  • the laser itself or the entire laser cutting device it is also conceivable for the laser itself or the entire laser cutting device to be displaceable.
  • the laser cutting device is preferably mounted such that it can rotate or pivot about the axis of rotation of the cutting body.
  • the device advantageously has a rotary or pivoting drive for rotating or pivoting the rotatable or pivotable part of the laser cutting device during the cut.
  • the rotatable or pivotable part of the laser cutting device is preferably a Beam deflection element for deflecting the laser beam.
  • the laser itself or the entire laser cutting device can be rotated or pivoted.
  • the material web is cut as a result of the linear displacement and/or the rotation or pivoting of a part or parts of the laser cutting device.
  • the previously described aspect of a linearly displaceable part of the laser cutting device can be generalized to the effect that the laser cutting device is preferably set up for linear displacement parallel to the axis of rotation of the cutting body of the laser beam falling on the material web to be cut.
  • thermal cross-cutting can be implemented with a constant, comparatively high cutting speed and relatively slow tracking of the laser beam in the production or transport direction, depending on the production speed.
  • At least part of the suction device is preferably mounted in a displaceable and/or rotatable or pivotable manner together with the laser beam or with a movable element of the laser cutting device.
  • part of the suction device can be connected to a movable element of the laser cutting device.
  • a suction and/or compressed air unit that pivots along with it is preferably implemented in order to keep the area of contamination as small as possible. The extraction and/or compressed air area can be positioned close to the product in order to work efficiently there.
  • the displaceable and/or rotatable or pivotable part of the laser cutting device can comprise at least one beam deflection element, in particular a non-pivotable, uniaxially pivotable or biaxially pivotable mirror element, a polygon mirror element and/or a polygon mirror roller.
  • the laser beam ideally runs collinear to the body axis, in particular the drum axis
  • the cutting device is advantageously designed in such a way that part or parts of the cutting device can be pivoted or rotated to the required extent about the body axis, in particular the drum axis, and on the other hand parallel to the
  • the axis of the body, in particular the axis of the drum can be moved or moved, with the speed of movement preferably being kept as constant as possible over the width of the web.
  • the arrangement described also offers the advantage that the material web can be moved at a fixed distance from the laser cutting device.
  • the resulting advantages are a small focal diameter, which leads to a high energy density in the focal point and allows the use of comparatively low-power or energy-efficient beam sources.
  • the cutting process can be used independently of the laser beam source used, i.e. cw or pulsed. This gives flexibility when choosing the beam source by choosing the desired cutting speed.
  • the structure described can also be scaled relatively easily to different web widths of the web of material to be cut.
  • the linear displaceability of a part or parts of the laser cutting device parallel to the body axis, in particular the drum axis, advantageously in combination with the ability to rotate or pivot about the body axis, in particular the drum axis, can advantageously be combined with the cutting of the material web from the inside of the cutting body pers out, or starting from the body axis, especially the drum axis.
  • embodiments with the linear displaceability of a part or parts of the laser cutting device parallel to the body axis, in particular the drum axis, advantageously in combination with the ability to rotate or pivot about the body axis, in particular the drum axis are possible, in which the laser beam hits the web material to be cut from the outside falls. In these embodiments, there is no need for passage openings in the jacket of the cutting body.
  • the web material can preferably be held on the cutting body by negative pressure or vacuum, additionally or alternatively also mechanically, for example by grippers.
  • the cut segments can also be held securely on the cutting body. Relative speeds or slippage between the cutting body and the segments is advantageously avoided.
  • the cutting body thus fulfills several functions: it initially holds and transports the uncut web of material; it then also holds and transports the cut segments; and it provides the passage opening through which the laser beam can pass outwards through the body jacket, in particular the drum jacket, in order to cut the material web.
  • the two first-mentioned functions are preferably performed using a vacuum, additionally or alternatively using mechanical elements such as grippers.
  • the cutting body also preferably has at least one passage opening through which the laser beam can pass from the inside to the outside through the body jacket, in particular the drum jacket, and can cut the material web held on the cutting body.
  • the at least one passage opening is a gap in the lateral surface of the cutting body that extends transversely across the width of the cutting body.
  • the cutting body preferably has a plurality of passage openings which are each at the same angular distance from one another.
  • the thus uniform division of the cutting body advantageously corresponds to the expansion of the segments in the direction of transport. In this way, it is possible to cut through the passage openings of the cutting body in an endless manner without offset and without interruption.
  • a compressed air device is preferably provided for blowing away particles produced by the laser cutting device, in particular by means of a transverse air flow.
  • a suction device with additional transverse air generated by the compressed air device perpendicular to the laser beam in a very limited space, namely inside the body, especially inside the drum.
  • a stationary or moving suction device for sucking off particles produced by the laser cutting can preferably be arranged on the outside above the cutting body.
  • a jet trap to be fitted above the cutting area and outside of the cutting body can also be designed as such a suction device.
  • the at least one passage opening in the body casing, in particular the drum casing can preferably be used for cutting dust extraction and/or optionally as a process gas supply.
  • the laser cutting process step can be distributed over a number of cutting bodies, in particular cutting drums.
  • the device according to the invention advantageously has at least one additional cutting body, in particular an additional cutting drum and at least one additional laser cutting device.
  • the additional cutting body can be designed as an additional cutting drum.
  • the further cutting body preferably has one or more features of the cutting body described above.
  • the body jacket, in particular the drum jacket of the further cutting body can have one or more passage openings as described above.
  • the further laser cutting device preferably has one or more features of the laser cutting device described above.
  • the additional laser cutting device can be arranged and set up in such a way that its laser beam is directed from inside the body, in particular the inside of the drum of the additional cutting drum, onto a body casing, in particular the drum casing of the additional cutting body, and the laser beam is directed from the inside of the body, in particular the inside of the drum, preferably from the axis of rotation , Through at least one passage opening in the body shell, in particular drum shell exiting laser beam hits the web of material to be cut.
  • At least part of the additional laser cutting device is preferably mounted so that it can be displaced linearly parallel to the axis of rotation of the additional cutting body.
  • At least part of the additional laser cutting device is preferably mounted such that it can rotate or pivot about the axis of rotation of the additional cutting body, or about a rotational or pivoting axis parallel thereto. It can be particularly advantageous if part of the additional laser cutting device can be rotated through a full 360°, as a result of which the dead time associated with pivoting back and forth can be significantly reduced.
  • the rotary movement can be carried out at a non-constant speed, i.e. with periodic braking and acceleration processes.
  • the cutting bodies and/or at least some of the laser cutting devices are preferably set up for pivoting or rotating at a non-constant rotational speed, in particular with periodic braking and acceleration processes.
  • the laser cutting devices can be separate devices and each have their own laser and beam guidance systems.
  • the laser cutting devices can use certain elements together, for example a laser as a beam generator for both cutting bodies.
  • the cycle time of the material web conveyance is advantageously decoupled from the cutting speed.
  • a high cutting rate can be achieved despite any provided (back) pivoting or rotation and the associated dead time.
  • the cutting speed can be set as desired and, if necessary, dynamically adjusted, within certain limits independently of the cycle time of the material web conveyance, i.e. independently of the rotational speed of the cutting bodies.
  • a cut is made on each cutting body every n cycles, where n corresponds to the number of bodies, in particular the number of drums, and then pivoted back again.
  • the cycle time corresponds to the time that the continuous web material to be cut requires to cover the path that a cut end product (segment) is wide.
  • This allows for various process steps, in particular cutting and / or pivoting back to the starting position, the time available can be significantly increased by the time s (nl)t, where s is the time gain, n is the number of bodies, in particular the number of drums, and t is the cycle time. This means that you gain a cycle time with each body, especially in order to be able to carry out the swing-back movement.
  • the process steps, in particular cutting and/or pivoting back can be divided over the total time s+1.
  • a third aspect of the invention provides a cutting device for cutting segments for energy cells from an endless web fed into a gap in a cutting plane, with a cutting rotation device which is arranged on one side of the gap and is driven by a drive device to rotate about a rotation axis , in particular cutting drum with at least one cutting blade protruding radially outwards from a boundary surface, in particular lateral surface of the rotary cutting device, in particular cutting drum, and at least one counter-blade arranged on the other side of the intermediate space, the cutting blade and the counter-blade each having a cutting edge.
  • the further object is to provide a cutting device which enables a clean, process-reliable cutting of segments for energy cells from a continuous web at a simultaneously high transport speed of the supplied continuous web.
  • the cutting blade comes into contact with the cutting edge of the counter-knife with its cutting edge during the rotary movement of the cutting rotation device, in particular the cutting drum. and is aligned at an angle other than zero degrees to the cutting edge of the counter-knife, the cutting edge of the cutting knife sliding off during the rotary movement of the rotary cutting device, in particular the cutting drum, with a cut of the continuous web in the point-like contact on the cutting edge of the counter-knife.
  • the invention according to the third aspect thus takes a fundamentally different way of cutting the segments from the continuous web compared to the solutions known in the prior art, in that the cutting blade deliberately comes into contact with the cutting edge of the counter-knife, so that the continuous web fed in between will be severed safely. Furthermore, the cutting edges are aligned with one another such that they are aligned at a non-zero degree angle with respect to one another in the point contact, so that the cutting blade during the turning movement of the cutting rotation device, in particular the cutting drum, slips in the point-like contact on the cutting edge of the counter-knife and thereby cuts through the endless web.
  • the continuous web is not cut simultaneously over its entire width during the cutting process, but instead in a point-like contact, which during the cutting process executes a movement in the direction of the longitudinal direction of the blades and thus severs the continuous web in a continuous cut transverse to its longitudinal extent.
  • a cut can be made with significantly lower cutting forces while the width of the continuous web to be cut is not limited or is at least significantly larger.
  • the punctiform contact point is moved on a curved path, which results from the combination of the movement of the contact point transversely to the endless path along the cutting edge of the counter-knife with the rotary movement of the counter-knife, i.e. a circular arc movement.
  • the movement of the contact point is achieved by aligning the cutting edges at an angle not equal to zero degrees in connection with the rotational movement of the cutting rotation device, in particular the cutting drum, ie the relative movement of the cutting edges to one another.
  • This cutting process which differs fundamentally from the prior art, allows a particularly surface-friendly cut of the continuous web to be implemented with very little soiling of the surface.
  • the counter-knife does not have to be formed by a separate part; it can also be integrally integrated into the counter-rotation body, in particular the counter-drum, in the form of a corresponding shape. Furthermore, the counter-knife can also be part of an insert part, which is mounted on the circumference of the counter-rotation body, in particular the counter-drum, and can have additional functions. All that is important for the realization of the counter-knife is the formation of a cutting edge in the form of a sharp edge on the counter-rotation body, in particular the counter-drum, on which the cutting knife of the cutting rotation device, in particular the cutting drum, slides with its cutting edge.
  • the counter-knife within the meaning of the invention is to be understood as the section of the counter-rotation body, in particular the counter-drum, on which the cutting edge is provided, regardless of whether the counter-knife is implemented as a separate insert or in one piece with the counter-rotation body, in particular the counter-drum .
  • the point contact feature should not be understood in a purely mathematical sense. Instead, this is intended to express the fact that the cutting knife and the counter-knife only touch each other during the cutting process over a very short section, which, for example, is already increased to a somewhat longer section simply due to the elastic properties of the cutting knife and/or the counter-knife. All that is important for the cutting process is that the cutting knife and the counter-knife lie against one another in this short section, and that the cutting knife and the counter-knife slide off one another during the cutting process by performing a longitudinal movement of this contact point and thereby cut the endless web transversely to its longitudinal extent by a shearing process .
  • the angle between the cutting edges is a maximum of 20 degrees. Due to the proposed angle range, the cutting forces that occur can be significantly reduced compared to a solution with parallel blades, so that a particularly clean cut of the segments can be achieved and blade wear can be reduced.
  • the cutting edges are aligned at a first angle of non-zero degrees to one another in a cutting plane running through the punctiform contact. Due to the proposed alignment
  • the transport movement of the endless web can also be compensated to such an extent that, ideally, a vertical cut can be made through the endless web during the transport movement.
  • the sectional plane is the plane which is arranged tangentially to the lateral surface of the counter-rotation body, in particular the counter-drum, and in which the punctiform contact is arranged. Since the cutting edges slide against each other in the point-like contact, the position of the cutting plane also changes.
  • the punctiform contact is not to be understood in a mathematical sense. This is only intended to express the fact that the cutting edges only abut one another over a very short section, which ideally is punctiform. However, since the cutting knife and the counter-knife always yield slightly due to their resilient properties, the punctiform contact is always increased to a somewhat longer contact, in that the cutting edges of the cutting knife and the counter-knife rest against one another.
  • the cutting edges are aligned perpendicularly to the cutting plane at a second angle that is not equal to zero degrees.
  • the proposed shape or alignment of the cutting edges allows the rotational movement of the cutting rotation device, in particular the cutting drum, and the resulting movement of the cutting edge perpendicular to the cutting plane to be compensated at least to the extent that the cutting edges do not lose their punctiform contact despite a movement perpendicular to the cutting plane.
  • the cutting knife and/or the counter-knife be resiliently mounted.
  • the continuous web is cut when the cutting edges are in contact at certain points. So that the contact is not lost in any case, the cutting edges and their cutting circles are dimensioned and arranged in such a way that they overlap at least slightly in the cutting plane.
  • This overlapping leads to an overpressure of the cutting edges, so that they exert a certain compressive force on one another during the cutting of the endless web. In extreme cases, this overpressure can lead to the knife breaking or damage to the cutting edges. So that this compressive force is reduced in turn and the associated probability of damage to the cutting edges is reduced, the cutting knife and/or the counter-knife are spring-mounted, so that the contact pressure on the cutting edges is reduced by the cutting edges being able to yield slightly.
  • the cutting edge of the cutting knife and/or the cutting edge of the counter-knife have a concave shape. It has been found that the overpressure initially increases from zero or a very low value to a maximum and then decreases again during the cutting process and the movement of the contact point along the cutting edges, even when cutting straight. This effect can be at least partially compensated for by the concave shape of the cutting edges, thereby reducing the overpressure on the cutting edges and the associated probability of damage to the cutting edges.
  • the counter-knife be arranged in a contact surface against which the endless web and the segment cut off from the endless web lie, and that a depression is provided in the contact surface on one side of the counter-knife. Due to the indentation in the contact surface, the cutting knife of the cutting rotary on coupled, in particular the cutting drum laterally of the cutting edge of the counter-knife in the depression and thus through the cutting plane into the endless web or in the dividing line between the end of the endless web and the segment cut off from it. Furthermore, an additional space is created by the depression, in which the cut-off segment or the already cut-off part of the continuous web can be accommodated during the cutting process. This means that the cut-off part can no longer interfere with the further cutting process.
  • the segment that has been cut off can be accommodated therein at least partially, so that it is better protected against further external influences in this section.
  • a further advantage can be seen in the fact that the cut edges of the cut-off segment and the continuous web are locally separated from one another and can therefore, for example, be cleaned separately from one another.
  • the recess preferably has a base area which, in the longitudinal direction of the contact surface, has a greater length than the section of the contact surface depressed by the recess. Due to the proposed dimensioning of the recess, the segment that has been cut off can dip into it without its free front side coming into contact with the side surface of the counter-knife. As a result, the probability of damage to the cut segment can be reduced, and a gentle cut can be realized. Further, this can prevent the cut end from being contaminated with cutting dust due to possible contact with the counter knife.
  • At least one compressed air opening that can be subjected to negative pressure can be provided on one side of the counter-knife, as a result of which the cut-off segment is sucked in and held on one side of the counter-knife until it is removed from it for further processing.
  • the compressed air opening can preferably be arranged in the depression, so that the cut-off segment is sucked via the compressed air line to a wall of the depression, in particular to the base of the depression, and is thus actively moved out of the cutting zone.
  • the counter-knife is arranged on a counter-motion body, in particular a counter-drum, which is driven in relation to the rotary movement of the rotary cutting device, in particular the cutting drum, to rotate in the opposite direction.
  • the cutting knife and the counter-knife move in the same direction in the direction of the movement of the endless web being fed when they pass the cutting plane. Since only the relative movement of the cutting edge of the cutting knife to the cutting edge of the counter-knife is decisive for the cutting process, the cutting speed can be reduced while the transport speed of the endless web is high at the same time, so that the cutting quality can be improved while the production rate is high at the same time.
  • the relative speed between the cutting edges can be realized very simply by driving the cutting rotation device, in particular the cutting drum and the counter-motion body, in particular the counter-drum, in each case to rotate at different peripheral speeds of the cutting edges.
  • the cutting rotation device in particular the cutting drum
  • the counter-motion body in particular the counter-drum
  • the cutting rotation device can each be driven by separate drive devices are.
  • the advantage of this solution can be seen in the fact that the drive movement of the cutting blades and the counter-blades can be controlled in such a way that they bear against one another over the entire cutting width during the cutting process with an identical force in the point-like contact.
  • the drive devices can in particular be controlled in such a way that the cutting blades come into contact with the counter-blades with a maximum force, which is measured in such a way that the cutting blades and/or the counter-blades do not break.
  • a suction device be provided in the area of the cutting blade of the rotary cutting device, in particular the cutting drum, and/or in the area of the counter blade. Cutting particles that are released when cutting the segments can be sucked off by the suction device. Due to the arrangement of the suction device in the area of the cutting knife or the counter-knife, the cutting particles are suctioned off directly or as close as possible to their point of origin.
  • the air flow that occurs during the rotary movement of the cutting drum and, if the counter-knife is arranged on a counter-rotary body, in particular a counter-drum, can also be used to prevent the movement of the cutting particles towards the suction device support.
  • a heating device be provided, by means of which the cutting knife and/or the counter knife can be heated at least in the area of their cutting edges.
  • the proposed heating device and the resulting heating of the cutters supplement the mechanical cutting effected by the punctiform contact with hot cutting, as a result of which a clean cut can be achieved.
  • breakouts and the formation of burrs can be reduced and the segments are generally less damaged.
  • generation of cutting particles can be reduced.
  • the heating device is designed in such a way that the cutting edges are heated to a temperature of around 600 degrees Celsius. As a result, the anode material, cathode material or separator material is slightly melted, at least in the area of the plastic components, and a smooth cut edge is produced.
  • bound components of a coating of the segments are prevented from breaking out.
  • the displacement of the segments under the acting cutting forces can be reduced by supporting the penetration of the cutting edges into the continuous web by melting the continuous web and reducing the mechanical cutting force to be applied.
  • a fourth aspect of the invention provides according to claim 9 a separating device for cutting and separating segments for energy cells from a fed continuous web, wherein a cutting device is provided by means of which the segments are cut in a predetermined length from the continuous web, and a pitch changing body,
  • a pitch change drum is provided, which is driven by a drive device to rotate about an axis of rotation, with a plurality of transport segments for receiving the segments being provided on a lateral surface of the pitch change body, with the transport segments being arranged in relation to the radial and/or Circumferential direction of the pitch change body are movably arranged, and a takeover device is provided which takes over the segments from the pitch change body.
  • the particularly rotatable pitch-changing body can be designed as a pitch-changing drum. Proceeding from this, the further object is to provide a separating device for cutting and separating segments for energy cells from a fed endless web, which enables a simplified cutting of the segments in connection with a process-reliable separation of spaced segments in the highest possible piece rate.
  • the pitch-changing body and the cutting device are separate assemblies and/or functionally decoupled and/or the cutting device is arranged between the supplied endless web and the pitch-changing body, wherein the transport segments rotate during the rotary movement of the pitch-changing body in a circular motion from a transfer point to a transfer point and back again, wherein the transport segments in the transfer point take over segments cut from the endless web with the cutting device and increasing their distances in the circumferential direction from the axis of rotation to the transfer point transport and hand over to the takeover device with the increased distances.
  • a separating device wherein the pitch-changing body and the cutting device are separate assemblies and/or functionally decoupled and/or the cutting device is arranged between the supplied endless web and the pitch-changing body, and the transport segments during the Rotational movement of the pitch-changing body in a revolving movement from a takeover point to a transfer point and back again, with the transport segments taking over segments cut from the endless web with the cutting device in the takeover point and transporting them to the transfer point with increasing their distances in the circumferential direction from the axis of rotation and with the enlarged ones handed over distances to the takeover device.
  • the cutting and the subsequent isolation of the segments are carried out in mutually independent and/or functionally decoupled assemblies, so that the cutting and isolation can each be optimized for themselves without to take the other function into account.
  • the cutting device can be arranged between the fed continuous web and the pitch changing body, so that the continuous web is first fed to the cutting device, which cuts the continuous web into segments and then transfers the cut segments to the pitch changing body.
  • the proposed separation and/or functional decoupling and/or arrangement of the cutting device and the pitch-changing body means that, for example, the circumference of the pitch-changing body can be used to the maximum for the separation and the associated increase in the distances between the segments, since the one provided in the prior art on the pitch-changing body Section of the continuous web is laid in the segments in an independent of the pitch change body upstream Baugmppe.
  • the cutting of the segments can be simplified since the continuous web and the cut segments no longer have to be arranged on movable transport segments in the cutting device.
  • the cutting line no longer has to be positioned in a predetermined alignment between two transport segments and can instead be optimized with regard to its cutting quality, cutting speed and cutting frequency.
  • the cutting device and the pitch-changing body can be functionally decoupled, but coupled to one another via a common drive device. It is only important that the cutting process and the separating process are carried out separately from one another, and that the segments are already cut and taken over by the pitch-changing body. The segments that have already been cut are then removed from the pitch change body in the takeover point taken over and transported on the pitch change body while increasing their distances from each other to the transfer point, where they are then transferred to a takeover device.
  • the segments can be transferred to the transfer device in a particularly reliable process at the transfer point if the transport segments have a spacing of 1 to 10 mm, preferably 2 to 5 mm, in the circumferential direction of the pitch-changing bodies at the transfer point.
  • a control device which controls the movement of the transport segments from the takeover point to the transfer point.
  • the movement of the transport segments consists of the pure rotary movement of the pitch-changing body and the additional superimposed radial and/or circumferential movement of the transport segments to increase the distances between the transport segments and thus also between the segments held on them. Since the position of the transport segments in the takeover point and the transfer point is of particular importance for process-reliable transport, especially given the high transport speeds to be achieved for the segments, the control device forms, in addition to the movable transport segments, an important component of the separating device, by means of which the movement sequence can be implemented particularly precisely can.
  • the control device preferably controls the radial and/or circumferential movement of the transport segments that causes the increase in distance relative to the rotational movement of the pitch-changing body and can therefore be viewed as a type of fine control.
  • a particularly inexpensive and reliable control of the movement of the transport segments can be realized in that the control device is formed by a control cam which is stationary relative to the pitch-changing body and on which the transport segments each bear with a control attachment.
  • the movement of the transport segments can thus be controlled purely mechanically, additional sensors and actuators are therefore not required.
  • the required accuracy of the movement sequence and in particular the positions of the transport segments in the takeover point and the transfer point can be achieved by a correspondingly precisely worked shape of the control cam and a correspondingly precise alignment of the control curve to the pitch-changing body or to the control lugs of the transport segments.
  • control device comprises at least one electrically controllable actuator that controls the movement of the transport segments.
  • the actuator controlling the movement can supplement or replace the control via the control cam if a purely electronic control of the movement of the transport segments is to be implemented.
  • the electrically controllable actuator enables very precise control of the movement of the transport segments.
  • the movement sequence can also be adjusted or changed very easily by way of a regulation or also to achieve a new transfer distance of the segments.
  • the transport segments can be moved in the radial direction of the pitch-changing body, and the control device controls the transport segments to move from a smaller radius in the transfer point to a larger radius in the transfer point.
  • the radial movement of the transport segments from the smaller to the larger radius automatically increases the distance between the transport segments, starting from the takeover point towards the transfer point, since the extension of the transport segments in the circumferential direction of the pitch-changing body is unchanged, the circumference on which the transport segments in the larger Radius can be moved, but is larger than the circumference on the smaller radius.
  • the transport segments be movable in the circumferential direction of the pitch-changing body, and the control device moves the transport segments from the transfer point to the transfer point at a speed with a higher peripheral speed than the circumferential speed of the pitch-changing body and from the transfer point to the transfer point at a lower peripheral speed than the Circumferential speed of the pitch change body controls.
  • the distance between the transport segments can be increased by a purely circumferential movement of the transport segments on an at least almost identical radius.
  • the distance between the transport segments, starting from the takeover point is realized by briefly accelerating the transport segments to a higher circumferential speed in relation to the rotational movement of the pitch-changing body.
  • the transport segments are then decelerated again during the movement to the takeover point until they touch each other again. If a purely circumferential movement is not optimal, the circumferential movement of the transport segments can of course also be combined with the radial movement described above.
  • the transport segments have a transfer surface that can be subjected to negative pressure.
  • the segments can thus be sucked onto the transfer surface of the transport segments via a vacuum and held on the transport segments during the further transport movement against the radial forces acting during the rotary movement of the pitch-changing body.
  • no further mechanical means are required on the transport segments for taking over and for the further transport of the segments.
  • the takeover and transport of the segments can be realized with very low forces acting on the segments to achieve “soft” transport.
  • the cutting device is formed by a cutting body driven to perform a rotary movement by means of a drive device, in particular a cutting drum driven to perform a rotary movement by means of a drive device.
  • a drive device in particular a cutting drum driven to perform a rotary movement by means of a drive device.
  • the realization of the cutting device as a cutting body, in particular a cutting drum is advantageous in that the cutting device can be integrated into a drum run in which the particularly high transport speed of the continuous web and the cut segments can be achieved with optimized space utilization.
  • the segments can be cut, for example, by means of a laser, which is arranged on the circumference of the cutting body or also radially inside in the cutting body and, when activated, emits a laser beam directed at the endless web.
  • mechanical cutting of the continuous web can also be provided in that a plurality of counter-knives distributed over the circumference are provided on the cutting body, each with a cutting edge that is free on one side and on whose outer sides the continuous web rests.
  • a cutting blade is provided on the outer circumference of the cutting drum, which can also be arranged on a second cutting body that is driven to perform a rotary movement, in particular a second cutting drum that is driven to perform a rotary movement. The cutting blade is then positioned or the movement of the second cutting body is controlled in such a way that the counter-blades of the cutting body come to rest in a predetermined position and orientation and cut through the continuous web according to the shearing principle during the further movement.
  • This mechanical cutting process can be further extended to a thermomechanical cutting process of the continuous web by heating the cutting blades or counter-blades. It is further proposed that the cutting body is driven by a drive device to perform a rotary movement counter to the direction of rotation of the pitch-changing body. Due to the advantageous direction of rotation of the cutting body, it has a movement in the same direction in an arrangement adjacent to the pitch-changing body on the edge side facing the pitch-changing body, so that the cut segments can ideally be taken over tangentially by the pitch-changing body with the lowest possible forces acting on the segments.
  • the cutting body is arranged directly adjacent to the pitch-changing body and transfers the segments at the point of the smallest distance from the pitch-changing body to the transport segments arranged at the transfer point. This distance that is as small as possible is advantageous in that the segments can be taken over by the pitch-changing body in a very process-reliable manner and with the lowest possible forces.
  • the pitch-changing body has five, six, seven, eight, ten or twelve transport segments, and the transport segments in the transfer point have an outer radius of 75 to 150 mm, preferably 90 mm to 125 mm, in relation to the axis of rotation of the pitch-changing body .
  • the proposed number of transport segments in connection with the proposed outer radius favorable movement conditions can be realized with regard to the distance increase to be undertaken and with regard to a process-reliable transport of the segments from the takeover point to the transfer point.
  • a system for producing stacks of individual segments for energy cells in which at least one separating device as described above is provided, the segments separated by the separating device being fed to a connecting device which connects the segments to form formations.
  • the segments can be connected to one another in the connecting device, forming a fixed connection, or can be connected to one another via an endless web.
  • the segments can also be placed one on top of the other or on an endless web, or vice versa, and can be transported further as a composite simply by exerting pressure. It is important that the formations are connected to one another either by pressure or a connection in such a way that they can be fed together in a composite for further processing.
  • the segments are connected to each other or to the endless web in such a way that they are fixed in their arrangement and orientation to one another.
  • the connecting device can have at least one supplied continuous web, and the connecting device can preferably have a first connecting device, which places the continuous web and the segments on top of one another to form a first formation. If this makes sense, a permanent connection can be created here, e.g. through a thermal lamination process. However, it is also sufficient if the first connecting device merely lays the endless web onto the segments or vice versa and then fixes the segments to the first formation simply by exerting pressure on the endless web.
  • the transfer device be formed by a transport body that is driven to perform a rotary movement, in particular a transport drum that is driven to perform a rotary movement
  • the first connecting device comprises a tensioning belt that encompasses the transport body, which takes over the segments from the pitch-changing body and onto a conveyor belt or onto the Endless web hangs up.
  • the transfer device is formed by a conveyor belt, on which the division-changing body places the segments in the transfer point, and the endless web is deflected via a deflection roller and placed on the segments, which is arranged in such a way that they unite in the direction of the conveyor belt has a smaller distance to the transfer point than the length segments in the transport direction of the conveyor belt.
  • the segments are transported away from the rotational movement of the pitch-changing body in a linear, rectilinear removal movement.
  • the segments placed on the conveyor belt are caught due to the arrangement of the deflection roller and the endless web guided and placed by it before they are completely removed from the pitch-changing body.
  • the segments are thus fixed in each phase of the transition movement either on the transport segments of the pitch changing body or over the endless track and ideally in a short overlapping phase both on the transport segments and over the endless track.
  • a particularly process-reliable transfer of the segments from the pitch-changing body to the conveyor belt can thus be implemented.
  • the connecting device has a second connecting device which connects the segments cut by the separating devices to form second formations or connects the first formations formed by the first connecting devices to form a second formation.
  • the second connecting device can also fix the second formations of the segments and the continuous webs that may be present either solely by applying pressure to the second formations or also in a connecting process such as a lamination process or a bonding process.
  • a fifth aspect of the invention relates to a cell stacking system for segments of energy cells, wherein a first feed device is provided, which feeds in segments, and a cell stacking device is provided, in which the segments are stacked one on top of the other, and a discharge device is provided, which removes the stacks of Dissipates segments from the cell stacking device.
  • the fifth aspect of the invention further relates to a cell stacking device for segments of energy cells.
  • the further object is to provide a cell stacking system and a cell stacking device which enable the segments to be stacked at the highest possible production rate.
  • the cell stacking device comprises at least two cell stacking devices, which remove the segments and place them on top of each other to form the stacks and the stacks are transferred to the discharge device in a clocked manner.
  • the proposed system is characterized in that the segments from the feed are stacked and removed in a high production capacity, since the segments are stacked simultaneously in two or more cell stacking devices starting from a feed in the cell stacking device. Practically in the cell stacking device, the inflow of segments is divided between two or more cell stacking devices, which stack the stacks on top of one another in a parallel division of labor into stacks and discharge them.
  • the number of cell stacking devices provided in the cell stacking device can be adapted to the stacking capacity to be achieved and the number of segments supplied via the feeding device per unit of time.
  • the cell stacking devices preferably each have at least one removal device, which takes over the segments in a predetermined sequence from the feed device.
  • the removal devices remove the segments in the predetermined sequence, so that the last removal device of the last cell stacking device removes the last segments and thus all segments are removed from the feeding device.
  • the predetermined sequence corresponds to a rhythm determined by the number of cell stacking devices.
  • four cell stacking devices are provided, each with a removal device. In this way, each of the removal devices removes one segment from a group of four of the supplied segments in a fixed assignment, i.e. the first removal device removes the first segment of the group of four, the second removal device removes the second segment of the group of four, etc. until the process is carried out in the same rhythm at the next group of four segments repeated.
  • the cell stacking devices are arranged one after the other in relation to the supplied segments, so that the segments are removed from the cell stacking devices in a sequential removal of the segments and stacked in a parallel stacking process.
  • the removal device has a large number of workpiece carriers, each of which has a receptacle into which the cell stacking devices place the stacks.
  • the discharge device thus discharges the stacked segments in the workpiece carriers in a discharge movement that is clocked in accordance with the cycle of the stacking process in the cell stacking device, so that the product flow in the system is not interrupted or backed up.
  • a second feed device be provided, which is arranged upstream or downstream of the cell stacking device in relation to a transport movement of the discharge device and inserts segments into the receptacles of the workpiece carriers before the cell stacking devices insert the stacks into the receptacles or segments onto the in the workpiece carrier arranged stack hangs up.
  • the second feed device preferably inserts further segments into the receptacles or places them on the stacks of segments inserted into the receptacles by the cell stacking devices, so that the stacks in the workpiece carriers are completed.
  • the first feed device feeds four-layer segments (monocells) with two separator sheets, an electrode sheet arranged in between and an electrode sheet lying on an upper side, which are then stacked by the cell stacking devices to form stacks with an electrode sheet exposed on an upper side .
  • the second feeding device then feeds and lays segments in the form of single-layer separator sheets or three-layer segments (closing cells) with two separator sheets and one electrode sheet these into the receptacles or onto the stack, so that the free electrode sheet of the stack formed by the cell stack devices is covered on the outside by a separator sheet.
  • the stacks are built up in the workpiece carriers in such a way that they each have a separator sheet on both sides, ie both on the upper side and on the lower side.
  • the first feed device has at least one transfer body driven by a drive device to rotate about a rotation axis, in particular at least one transfer drum driven by a drive device to rotate about a rotation axis, which transfers the segments to the cell stacking device.
  • the segments can be fed to the cell stacking device at a particularly high feeding speed by the transfer body, in particular the transfer drum.
  • the first feed device can be designed in a particularly compact, space-saving design.
  • the first feed device can preferably have an even number of transfer bodies, in particular transfer drums, and between the transfer bodies, in particular transfer drums, an odd number of deflection bodies, in particular deflection drums, can be provided, which take over the segments from a first transfer body, in particular from a first transfer drum and transferred to a second transfer body, in particular to a second transfer drum.
  • the even number of transfer bodies, in particular transfer drums, and the odd number of deflection bodies, in particular deflection drums, provided in between make it possible for the segments on the transfer bodies, in particular transfer drums, to always be in an identical alignment, i.e. always with a separator sheet on the surface or an electrode sheet are transported on the surface and transferred to the cell stacking devices in this orientation.
  • the deflection bodies take over the segments from the first transfer body, in particular the first transfer drum, and transport them to a transfer point in which they transfer the segments to the second transfer body, in particular the second transfer drum. If the segments are transported on the first transfer body, in particular the first transfer drum with the electrode sheets facing to the outside, they are then transported on the deflection body, in particular the deflection drum with the electrodes facing to the inside and subsequently to the second transfer body, in particular the second transfer drum handed over that they are transported to this / this again with the electrodes facing the outside.
  • a cell stacking device for segments of energy cells in which a rotating magazine body, in particular a magazine drum with at least one magazine, is provided, which can be driven by means of a drive device to perform a repetitive rotary motion about a rotary axis that is interrupted by standstill phases.
  • a removal device being provided which feeds segments to the magazine rotation body, in particular the magazine drum, the removal device removing the magazine in the transfer point when the magazine rotation body is at a standstill, in particular the magazine drum with a plurality of segments to a stack fills up to a predetermined stack height, and a delivery device is provided which stacks the segments from the magazine in the handover point.
  • the proposed cell stacking device is characterized by a compact design with a high stacking capacity at the same time.
  • the core of the cell stacking device is the rotating magazine body, in particular the magazine drum, which, due to its rotational movement interrupted by standstill phases, enables the cell stacking device to be integrated into a first feed device designed as a drum run, which in turn enables a particularly high transport capacity of the segments.
  • the magazine has at least one lateral access opening
  • the dispensing device is formed by a stripping device which is stationary relative to the magazine rotary body, in particular the magazine drum, and which is arranged and aligned in such a way that it is released during the rotary movement of the magazine rotary body, in particular the magazine drum engages through the engagement opening and forces the stack out of the magazine. Due to the proposed solution, the stack is automatically pushed out of the magazine at a point defined by the arrangement of the stripping device during the rotary movement of the magazine rotating body, in particular the magazine drum.
  • the stripping device is preferably arranged in such a way that it not only pushes the stack out of the magazine, but also places it in a receptacle of a workpiece carrier of the discharge device of the superordinate system.
  • the magazine has at least two engagement openings aligned in the circumferential direction of the magazine rotating body, in particular the magazine drum, and the stripping device forces the stack out of the magazine by reaching through both engagement openings.
  • the stripping device forces the stack out of the magazine by reaching through both engagement openings.
  • the magazine has a lifting device which increases the depth of the magazine as a function of the increasing stack height of the segments in the magazine.
  • the lifting device makes it possible to always deposit the segments as close as possible to the access opening in the receptacle, so that the segments do not have to slip into the receptacle.
  • the lifting device is designed in such a way that, after a segment has been inserted, it increases the depth of the receptacle by the thickness of a segment, so that the segments are always placed at the same height in the receptacle.
  • the lifting device can preferably be formed by a spring-loaded base of the magazine.
  • the depth of the recording is automatically increased due to the weight each time a segment is inserted.
  • the size of the spring force to be overcome can be used here for the design of the lifting device by selecting a correspondingly strong spring, which can then be adapted to the weight of the segments, for example.
  • the magazine has a holding device which fixes the stack in the radial direction in the magazine during the movement of the magazine rotating body, in particular the magazine drum with the magazine, from the takeover point into the transfer point.
  • the holding device also secures the stack against unintentional exit from the magazine during the rotary movement of the magazine rotating body, in particular the magazine drum.
  • the holding device can preferably be actuated automatically by the delivery device to carry out a release movement that releases the stack, so that the holding device is always released when the delivery device begins to remove the stack from the magazine.
  • the object of the invention according to the fifth aspect is also achieved by a partial device of or in a cell stacking system for segments of energy cells with the features of claim 16, and by a partial method when producing cell stacks in a cell stacking system for segments of energy cells with the features of claim 22
  • the supplied segments of energy cells in a number AA per unit time are skillfully split into a number BB per unit time and a number CC per unit time.
  • the number BB per time unit can in a certain way advantageously be transported further and sort of smuggled through and ejected from the number AA, after which the number CC is already significantly reduced compared to the number AA.
  • number CC is more amenable to orderly and precise stacking without impeding the flow of material.
  • the number BB is then in turn also significantly reduced compared to the number AA and is more easily accessible for orderly and precise stacking. To a certain extent, a continuous, delay-free supply of divided partial flows to a cell stacking device is made possible.
  • the stacking can take place in parallel in a certain way, after which high throughput rates can be achieved.
  • a continuous web of uncut segments can be fed in at high speed and the segments cut from it can be further processed online and stacked.
  • a large flow of segments can be reliably and effectively organized, transported on more or less without stopping and interruptions, and advantageously divided into partial flows.
  • a stream of segments, for example cut from an endless web online, with a number AA per unit of time can be split up, for example, in such a way that every second segment is removed from the stream and a stream of segments with the number BB per unit of time from the removed, second segments formed and a stream of segments with the number CC per time unit is formed from the remaining segments.
  • the distance between two segments can be greater than or approximately equal to the length of a segment.
  • the distance between two segments can be greater than or approximately equal to the length of a segment.
  • a distance formed in the stream of segments with the number BB between two consecutive segments makes it possible to terprocess to provide a sequence of segments, in which the distance and an associated time interval can be used during a conveying of the stream of segments for an access to a segment.
  • one or more removal devices of a cell stacking device can be given sufficient time in the time interval between the end of a first conveyed segment and the beginning of a second conveyed segment to be moved again, in particular from a delivery or waiting position, to a removal position.
  • the process of splitting is somewhat similar to opening a zip fastener, in which all the elements are close to each other when they are closed and, after opening, have about the same distance as one element between them.
  • the segments in contrast to the zipper comparison, have a certain distance in the stream with the number AA per time unit, in particular not edge to edge or end to end.
  • the splitting can also be imagined in such a way that in the stream of segments with the number AA, segments of the stream with the number BB and segments of the stream with the number CC alternate one after the other, for example “yellow” and “red” segments BB and CC, respectively .
  • a delivery region e.g. GI
  • the stream of segments number AA is split and the segments of stream number BB and segments of stream number CC are passed according to their alternating sequence.
  • a stream of "yellow” segments with the number BB per time unit and a stream of "red” segments with the number CC would then be generated.
  • the segments would each have a distance from one another that is greater than or approximately equal to the length of a segment.
  • the transport speed of the streams of segments with the number AA per unit of time, the number BB per unit of time and the number CC per unit of time can be kept at least approximately the same.
  • distances between the segments in the streams “BB” and “CC” can be achieved in a simple manner without having to change the position of the segments in the streams “BB” and/or “CC”, which is a particular gentle handling of the segments is guaranteed and high throughput rates are permitted.
  • a sixth aspect of the invention relates to a processing device for processing segments of energy cells.
  • the further object is to provide a processing device which enables reliable processing of segments for energy cells in the highest possible piece rate.
  • the processing device for processing segments of energy cells wherein at least one feeding device with a plurality of continuously or discontinuously supplied workpiece carriers, each with a receptacle for receiving one or more segments is provided, and at least one fixing device is provided with a plurality of fixing elements driven to perform a revolving movement via an endless drive device, and at least one processing station is provided, in which the segments fed into the workpiece carriers are processed in a processing process under the influence of mechanical forces are processed, the segments being fixed during the passage through the processing station via the fixing device by at least one fixing element in the receptacles of the workpiece carrier.
  • the advantage of the proposed solution is that the segments are machined in a continuous machining process in the machining device by means of the continuously supplied workpiece carrier.
  • This continuous machining process is also made possible by the provided fixing device with the fixing elements driven via the endless conveyor, whereby the segments are fixed in the workpiece carriers during the passage through the processing station and during the mechanical forces exerted.
  • the fixing elements of the fixing device are driven by the endless drive device and are thus also moved, so that they fix the segments during processing in the processing device and also for a short distance in the feed and removal movement in the workpiece carriers.
  • additional holding elements can be provided which pre-fix the segments in the workpiece carriers in order to hold them in position in the workpiece carriers in a preceding feed movement.
  • the fixing elements of the fixing device provided according to the invention serve specifically to fix the segments against the mechanical forces acting in the processing station, so that the processing of the segments can be carried out more easily and more precisely.
  • a discontinuous feeding of workpiece carriers is also possible. This can be understood to mean a clocked, event-controlled and/or irregular feeding of workpiece carriers, for example with a changing distance from one another.
  • An individual drive can advantageously be provided for each workpiece carrier.
  • the fixing elements have a pressure surface with which they fix the segments arranged in the workpiece carriers in a processing position by exerting a compressive force.
  • the fixing elements thus fix the segments with a holding force that is easy to implement in terms of process technology, by pressing the segments into the receptacles of the workpiece carrier via the pressure surface.
  • the segments are arranged in the receptacles of the workpiece carriers in such a way that they have a surface that is freely accessible from the outside, on which the fixing elements come to rest with the pressure surface, and the pressure surface of the fixing elements is smaller than the free surface of the segments.
  • the fixing of the segments can be simplified as a result, since the fixing elements do not necessarily have to be aligned in a predetermined position relative to the segments. The fixing elements can thereby be aligned in different positions relative to the segments without their function for fixing the segments being adversely affected. In this way, for example, process-related positional inaccuracies of the fixing elements can be compensated for, for example due to a high production rate of the segments.
  • a control device which controls the revolving movement of the fixing elements during the revolving movement to a pressing movement during which they come into contact with the pressing surface on the free surface of the segments.
  • the movement of the fixing elements is thus composed of a combination of a pure revolving movement of the fixing elements with a pressing movement of the fixing elements to the workpiece carriers and the segments arranged therein, with the control device controlling the pressing movement, i.e. the relative movement of the fixing elements to the workpiece carriers and the segments.
  • control device can preferably be formed by a fixed control contour and control projections running thereon, which interact with the movement of the fixing stamps, whereby a purely mechanical control tion of the movement of the fixing elements can be realized.
  • the fixing elements enclose the segments in a form-fitting manner in the processing position.
  • these can be held in position in the processing position in addition or as an alternative to the described exertion of pressure by the fixing elements, with the fixing elements additionally defining the target position of the segments in the processing position by means of the form-fitting embracing and their own position in the processing position.
  • At least one processing station includes a punching device which punches electrical contacts to a predefined shape in an edge section of the segments.
  • the contacts are formed by a material cut, in which particularly high mechanical forces are exerted on the segments.
  • the fixation of the segments is of particular importance, since otherwise the punching cannot be carried out accurately and would lead to an unclean cut.
  • the contacts are punched through the fixing elements during fixing, so that they subsequently have a defined shape and orientation relative to the fixing elements.
  • At least one processing station includes a welding device, which connects collector lugs to the contacts by a welding process.
  • the welding device is arranged downstream of the punching device, i.e. following the punching device, so that the conductor lugs are welded to the contacts after the contacts have been punched.
  • the segments are permanently fixed by the fixing elements while passing through the punching device and the welding device, so that the above-described precise punching of the contacts to the fixing elements and the knowledge of the shape of the contacts to the fixing elements here in addition to a precisely positioned welding of the conductor lugs on the contacts can be used according to a predetermined target orientation.
  • At least one processing station includes a tape device, in which the segments are individually and/or multiple segments as a composite and/or the welds of the connections between the contacts and the conductor lugs are covered by one or more adhesive strips.
  • Fixing the segments in the tape device is advantageous in that the segments are fixed by the fixing elements and are then fixed in this fixed position by attaching the adhesive strips in this fixed position, so that they also retain their position when the fixing element no longer fix the segments. This applies above all to the fixation of several segments as a composite and to the fixation of the conductor lugs on the contacts using the adhesive strips.
  • the processing station(s) be designed to be stationary in relation to the workpiece carriers fed via the feed device.
  • the workpiece carriers with the segments to be machined are thus moved through the machining station via the feed device.
  • the segments accommodated in the workpiece carriers thus have an undefined orientation to the processing stations, which is also subject to a further random factor due to the loose accommodation of the segments in the workpiece carrier receptacles, in that the segments can perform slight movements in the receptacles.
  • a fixing device with the fixing elements fixing the segments is additionally provided according to the invention, this uncertainty factor be compensated by the segments being fixed in their position by the fixing elements and the segments being processed in this position of the segments defined by the fixing elements.
  • the fixing device practically creates the constructive interface between the processing station and the feeding device, which enables reliable processing of the segments.
  • the processing station can also have a processing unit that is moved in the direction of movement of the workpiece carrier, so that the feed movement of the workpiece carrier does not have to be interrupted or can be made shorter because the segments are processed in the moving workpiece carrier. As a result, the production rate of the segments in the processing device can be increased.
  • the workpiece carriers are moved through the processing device in a clocked manner via the feed device. Due to the clocked movement of the workpiece carriers, the transport movement can be adapted to the machining processes of the segments in the machining stations if the machining of the segments in the machining stations requires a brief standstill of the workpiece carriers and the segments.
  • the workpiece carriers can be driven independently of one another by separate drive devices.
  • the movement of the workpiece carriers can be controlled more precisely and, in particular, independently of one another as a function of the signals from individual sensor devices such as quality inspection devices or other control sensors.
  • the fixing elements can be driven independently of one another by separate drive devices.
  • the movement of the fixing elements can be controlled more precisely and in particular independently of one another as a function of the signals from individual sensor devices such as quality control devices or other control sensors.
  • At least two feed devices are provided, which feed workpiece carriers with segments arranged therein in parallel feeds to different processing stations of the same function.
  • the processing rate of the segments in the processing device can be further increased by the proposed further development of the processing device.
  • At least two fixing devices are provided with a plurality of fixing elements which are driven to perform a revolving movement via an endless conveyor and which fix segments in workpiece carriers in different processing stations of the same function.
  • a seventh aspect of the invention is based on the object of providing a machine and a method for producing a unit comprising a cell stack and a pouch film, which enables a significant increase in performance compared to conventional machines and methods.
  • the above object is achieved by a machine according to claim 14.
  • a machine for the industry producing energy cells comprising a rotation device which is mounted such that it can rotate about an axis of rotation and with which at least one transport element can be moved on a closed orbit, in particular a circular path; a feed device for transferring a one-part or multi-part pouch film and a cell stack to the transport element within a feed section, the transport element being set up to transport the pouch film and the cell stack as a unit in such a way that the pouch film at least partially encloses the cell stack; at least one processing device for performing a processing step on the unit; and a delivery device for removing the processed unit from the transport element, wherein the unit can be conveyed by the rotation of the rotary element from the feed section via the at least one processing device to the delivery device.
  • the closed orbit on which the transport element can be moved can be a circular path within the scope of this application.
  • the pouch film which is transferred to the transport element in the feed section, can be in one piece, for example, or else in several pieces. If the pouch film is in several parts, it is preferably two sheets of pouch film between which the cell stack can then be arranged. If the pouch film is in one piece, then it is wrapped around the cell stack to accommodate it.
  • the transport element can ensure that the unit can be reliably held in position, so that the processing by the at least one processing unit can be carried out with great accuracy. Furthermore, by holding the unit by means of the transport element, the pouch film can be shaped appropriately for the subsequent processing operation.
  • a plurality of transport elements are preferably provided on the rotary unit, so that a clocked rotation of the rotary device enables parallel processing of the units held by the transport elements; this increased the process speed. Furthermore, the at least one processing device can be arranged in a space-saving manner along the closed orbit.
  • the cell stack comprises a stack of segments.
  • These segments are more preferably alternating anode sheets and cathode sheets, which are also referred to as electrodes and are separated from one another by separator sheets, which are also produced as segments.
  • the at least one transport element is set up to hold the pouch film in position relative to the cell stack in such a way that the pouch film is on two opposite sides of the cell stack overlapping.
  • overlapping contact is to be understood as meaning that the pouch film is in contact with the cell stack in such a way that the corresponding side of the cell stack is projected all around by an overlapping section of the pouch film.
  • a double-layered pouch film is provided around the cell stack, the two layers of which can be connected to one another via a sealed seam. Due to the overlapping contact of the pouch film on the cell stack, the double-layered overlapping section of the pouch film forming around the cell stack only has to be sealed in order to close the cell stack in the pouch film. Due to the fact that the transport element can align and shape the pouch film relative to the cell stack, additional holding or shaping devices can be omitted.
  • the at least one transport element comprises two clamping jaws, which can be subjected to a clamping force in such a way that the cell stack and/or the pouch film can be held by them.
  • the clamping jaws offer a simple way of exerting a predefined clamping force on the pouch film and/or the cell stack. This is advantageous on the one hand to ensure reliable storage of the pouch film and/or the cell stack, but on the other hand also to prevent damage to the pouch film and/or to the cell stack.
  • the transfer of the cell stack and/or the pouch film to the two clamping jaws preferably takes place in the radial direction in relation to the axis of rotation of the rotation device.
  • the clamping surfaces of the clamping jaws are preferably aligned perpendicular to the direction of rotation of the rotation device; as a result, the unit consisting of pouch film and cell stack is transported in the rotating device like a fan.
  • the cell stacks starting from a feed plane, are rotated out of the feed plane by the rotational movement of the rotation device and are preferably transferred back to the delivery unit in the feed plane. In this way, the unit can advantageously be fed to the at least one processing device.
  • the clamping jaws are preferably mounted such that they can be tilted in relation to the rotation device, as a result of which a simple adjustment of the clamping force is made possible.
  • clamping surfaces of the clamping jaws are aligned parallel to the direction of rotation of the rotation device.
  • clamping jaws of the at least one transport element are arranged between two opposite rotating parts.
  • Such a double disk configuration is advantageous because the clamping force acting on the pouch film and/or the cell stack by the clamping jaws can be adjusted by changing the axial distance between the two rotary disks.
  • the clamping jaws can be opened and closed actively, for example by means of an adjustment link or a lifting cylinder, so that a defined gripping of the pouch film and/or the cell stack by the clamping jaws can be ensured.
  • the clamping jaws can also be opened and closed passively, for example, further, for example, by spring-loaded clamping jaws; as a result, a simpler and more cost-effective construction of the machine can be achieved.
  • the at least one processing device is preferably one or more of the following devices: a sealing device, by means of which the pouch film arranged around the cell stack can be at least partially closed with a sealing seam; a shaping device, by means of which the pouch film can be brought into a predefined shape; an alignment device, by means of which a predefined positioning and/or alignment of the pouch film relative to the cell stack can take place; and/or a functional device, by means of which the pouch film can be provided with functional elements, in particular with valves.
  • a sealing device by means of which the pouch film arranged around the cell stack can be at least partially closed with a sealing seam
  • a shaping device by means of which the pouch film can be brought into a predefined shape
  • an alignment device by means of which a predefined positioning and/or alignment of the pouch film relative to the cell stack can take place
  • a functional device by means of which the pouch film can be provided with functional elements, in particular with valves.
  • the sealing device is preferably set up to completely close the pouch film. More preferably, the sealing device is set up to design one of several sealing seams or a section of the sealing seam as a temporary sealing seam, which can be opened again in a later production step for filling the pouch with an electrolyte.
  • a temporary sealed seam is less resistant, so that it can be opened again more easily in the subsequent production section.
  • the sealing can take place in such a way that a sealing seam is applied on three sides if it is a one-piece pouch film that is wrapped around the cell stack.
  • the sealed seam can also be applied on four sides, for example, if there are two sheets of pouch film between which the cell stack is arranged.
  • the sealing device can preferably also interact with the transport element in such a way that the sealing jaws of the sealing device encompass the clamping jaws in order to apply the sealing seam to the sections of the pouch film that protrude beyond the clamping jaws.
  • the feed device is preferably set up to transfer the pouch film and the cell stack to the transport element as a common unit. With this solution, only a single transfer point is provided between the feed device and the rotation unit.
  • the feed device comprises a first feed part for feeding the pouch film and a second feed part for feeding the cell stack, with the cell stack being separated from the pouch film by means of a wrapping device will turn over.
  • the feed movement of the cell stack can be used to achieve wrapping of the cell stack with the pouch film.
  • the wrapping device is designed to align the pouch film in a plane perpendicular to the conveying direction of the cell stack, so that the movement of the cell stack against the pouch film wraps the pouch film around the cell stack.
  • a predefined wrapping of the cell stack in pouch film can be achieved, so that process reliability is increased.
  • the feed device comprises a first feed part which is set up to transfer the pouch film to the at least one transport element within a first partial area of the feed section, wherein the feed device comprises a second feed part which is set up to transfer the cell stack to the at least one transport element in a second partial area of the feed section.
  • a separate device for combining the pouch film with the cell stack can be omitted.
  • the pouch film is preferably inserted into the transport element in such a way that the pouch film can accommodate the cell stack in the second partial area; there remains a receiving gap between two layers of the pouch film used.
  • the transport element can be moved easily by rotating the rotation unit about its axis of rotation on a closed orbit, in particular a circular path, from the first partial area to the second partial area, where the cell stack is transferred to the transport element.
  • the first feed part preferably includes a wrapping device with which the pouch film can be transferred to the transport element in the wrapped state. More preferably, the wrapping device of the first feed part is designed to flatly align the pouch film, with an insert being provided which can be moved against the flat pouch film in such a way that the pouch film is transferred to the transport element in the folded state. In this way, the pouch film can be reliably positioned in the transport element, which also allows the cell stack to be accommodated in the second partial area.
  • the first feed part include a transfer device which is set up to pick up a single sheet of pouch film from a pouch film stack by means of a holding means and attach it to the at least to hand over a transport element.
  • a transfer device which is set up to pick up a single sheet of pouch film from a pouch film stack by means of a holding means and attach it to the at least to hand over a transport element.
  • pre-cut sheets of pouch film can be used as the starting material for the machine.
  • a transfer to the transport element can then take place by means of the holding means, which can lift the uppermost sheet of a pouch film stack, for example by means of a negative pressure.
  • the machine is preferably set up such that the holding means is guided to the transport element by rotation of the transfer device about a first axis. This ensures particularly simple kinematics for transferring the pouch film to the transport element.
  • the holding means can pick up the uppermost sheet of the pouch film from the pouch film stack by rotation about a second axis, which is aligned orthogonally to the first axis. More preferably, the holding means are then arranged on mutually opposite side surfaces of the holding means, which are aligned parallel to one another, for example. In this way, two sheets of pouch film can then be picked up with the two holding means and then transferred to the transport element at the same time.
  • the feeding device and/or the delivery device is set up to convey the cell stack and/or the pouch film in a linear movement.
  • This linear movement enables efficient transfer of the pouch film and/or the cell stack to the transport elements of the rotation device, which are preferably open radially outward.
  • the feed device and/or the delivery device has a conveying element with a continuous conveying movement, in particular a conveyor belt, and a gripping element with a discontinuous conveying movement.
  • the gripping element can then take over the actual transfer of the cell stack and/or the pouch film to or from the transport element.
  • the proportion of conveying components that work discontinuously or not unidirectionally can thus be reduced. On the one hand, this can increase the process speed and, on the other hand, reduce the probability of failure.
  • the feed device includes a cutting device for cutting the pouch film.
  • the pouch film can thus already be transferred to the transport element in a suitable size. Due to the cutting device, a pouch film wound up on a spool can also be used.
  • the feed device includes an additional rotation device for moving a pouch film and/or a cell stack on a closed orbit, in particular a circular path.
  • the conveyance within the feed device can also take place in an efficient manner by means of a rotation device.
  • the additional rotation device of the feed device can be set up to pick up a sheet of pouch film at a first pick-up point, to combine it with the cell stack at a second pick-up point and to transfer it to the transport element of the rotary device in the feed section.
  • This feed section corresponds to the feed section of the primary rotary device, which also passes through the processing device and the delivery device.
  • the transport element of the primary rotation device preferably picks up a sheet of pouch film in a first partial area of the feed section and is then moved further to the second partial area of the feed section on a closed orbit, in particular a circular path, where the cell stack with the one sheet of pouch film is attached to the Transport element is passed, so that a unit is formed comprising two sheets of pouch film with an interposed cell stack.
  • the transport element can be filled in the feed section with a cell stack, which is surrounded on two sides by a layer of pouch film.
  • the method comprises the following method steps: a) Transfer of the cell stack and the one-part or multi-part pouch film to a transport element in a feed section, so that the pouch film at least partially covers the cell stack encloses b) moving the transport device on a closed orbit, in particular a circular path around an axis of rotation of a rotary device until it reaches a processing device; c) processing a unit made of cell stack and pouch film; d) moving the transport element on a closed orbit, in particular a circular path around the axis of rotation of the rotation device until it reaches a delivery device; and e) transferring the processed unit composed of cell stack and pouch film from the transport element to the delivery device.
  • the pouch film is preferably at least sealed around the cell stack, so that the cell stack is closed by the pouch film. More preferably, the cell stack is then hermetically sealed within the pouch film. Furthermore, in step c), for example, one or more of the following Processing steps take place: forming the pouch film; aligning the cell stack and/or the pouch film with respect to one another and/or with respect to the transport element; Adding valves or other functional elements.
  • a machine for the energy cell manufacturing industry comprising a first conveyor device for conveying a cell stack and a second conveyor device for conveying a one-part or multi-part pouch film, the second conveyor device being set up to bringing a pouch film together with the cell stack on the first conveyor device in such a way that the pouch film at least partially encloses the cell stack, the second conveyor device comprising at least one rotation device which is mounted such that it can rotate about an axis of rotation and is set up to move the pouch film on a closed orbit, in particular a circular path to lead to the cell stack.
  • the first conveying device is preferably set up to convey the cell stack in a linear movement.
  • feeding the pouch film to the cell stack on a closed orbit, in particular a circular path is particularly efficient, ensures high process quality, and the machine can be designed to save space.
  • the cell stack can be reliably enclosed, preferably completely enclosed, with the pouch film, so that it can be processed, for example sealed, in a downstream processing device.
  • the pouch film is preferably guided to the cell stack by a transport element comprising two jaws. More preferably, the two jaws are then arranged between the rotating parts of a double disk.
  • the first and/or the second conveying device is preferably set up to bring the pouch film together with the cell stack in such a way that the pouch film rests in an overlapping manner on two opposite sides of the cell stack.
  • the layers of pouch film lying on top of one another can be sealed around the cell stack in a simple manner in a subsequent method step.
  • the second conveyor device comprises a first and a second rotation device, each of which is set up to convey a sheet of pouch film, the first rotation device bringing the sheet of pouch film together with the cell stack at a first transfer point, and the second rotation device bringing the sheet together the pouch film merges with the cell stack at a second transfer point.
  • the first and the second transfer point are preferably spatially separated from one another.
  • the first and the second rotation device are each formed by a plate-shaped rotation element.
  • An eighth aspect of the invention is based on the object of providing a device for removing or branching off flat product segments from a product stream of the industry producing energy cells.
  • the invention according to the eighth aspect solves this problem with the features of claim 17. Accordingly, it has a device for removing or branching off product segments from a product flow of the energy cells manufacturing industry, wherein the device has at least one switchable delivery device which is set up to remove a product segment from the product flow as a result of a switching signal.
  • the switching signal is output by a control device, for example by the machine control. According to the invention, a switchable delivery or transfer of product segments from the production run is made possible.
  • individual product segments for example electrode or separator layers or individual monocells
  • individual test criteria can be checked for correct detection by the internal sensors.
  • machine sensors can be tested with little effort.
  • a calibration of such sensors is also possible in this way.
  • product segments with connection points so-called splices, can be removed from the production run in a targeted manner to ensure that splices do not end up in the end product.
  • One or more of the following tasks can be fulfilled with product segments removed according to the invention: checking the internal sensors by comparing the internal measured values with external calibrated measuring means; Calibration of the internal sensors; Production withdrawal to check ongoing quality; targeted splice removal to ensure that these do not end up in the end product.
  • a removal device can preferably lead the removed product segment out of a climatically protected area through a lock. This means that the production climate is only minimally disturbed and a time-consuming (re)establishment of the necessary climatic conditions can be avoided.
  • the machine can have one or more removal positions in the transport direction, with each removal position preferably being assigned a delivery device designed according to the invention, via which the intermediate products (segments) present at the respective production point can be removed.
  • the device preferably has a collecting device which can be arranged to receive a product segment removed from the product flow by the dispensing device, for example underneath the dispensing device.
  • the collecting device has at least one collecting container which can be arranged in particular below the dispensing device and which can be removed from the machine manually or automatically, for example.
  • a separate collection container can be provided for each extraction point.
  • the collecting device therefore comprises a plurality of collecting containers that can be assigned, in particular, to different removal positions
  • a removal request is sent to the product tracking tion in the control device.
  • the corresponding product segment is then automatically dropped into the collection container by means of the delivery device.
  • the operator can then remove the collection container with the product segment.
  • At least part of the collecting device is preferably movable, adjustable, traversable or pivotable, in particular between different removal positions and/or out of a machine.
  • a laterally movable device can be provided below these removal points, which can include a collecting container or itself be set up to receive discarded product segments.
  • the collection container or, more generally, a part of the collection device is specifically moved under the removal point when removal is required and can wait there, for example, for product segments to be ejected.
  • the dispensing device is then activated, for example by means of an ejection valve, and the product segment is released or removed from the process flow. This can be done with or without compressed air, for example also mechanically, for example by means of a comber.
  • the products then fall, if necessary, into an intermediate store (buffer device) explained further below or directly into the collecting container or the collecting device.
  • the collection container advantageously moves to a removal sluice of the machine.
  • the ejected product segment is accepted by the operator for further testing.
  • the collecting device can comprise a conveyor device, for example a belt conveyor. If a conveyor belt with a collection container is used, the removal request is sent to the collection container, for example, so that it can then move under the removal point.
  • a buffer device for temporarily storing removed product segments between the delivery device and the receiving device.
  • the removal device can have a holding device, for example a vacuum device, for exerting a holding force, for example a suction force, on the product segment in the product flow.
  • a holding device for example a vacuum device
  • the switchable delivery device is advantageously set up to reduce or eliminate the holding force as a result of a switching signal.
  • the delivery device has at least one rotatably driven delivery drum and the holding device described above is set up to hold and transport at least one product segment by means of suction on the outer surface of the delivery drum.
  • the switchable dispensing device is advantageously set up to reduce or eliminate the suction force as a result of a switching signal. Due to the reduced or eliminated suction power, the in the dispensing area of the dispensing device Liehe product segment either fall from the delivery device due to gravity, or are transferred to a receiving device to be explained later.
  • the switchable dispensing device preferably has at least one switchable valve arranged in a vacuum device for interrupting the vacuum acting on a product segment. By interrupting the vacuum supply, a product segment can be released from the product flow in a simple manner.
  • a compressed air delivery device that can be switched, for example, by means of a valve, is provided for conducting compressed air to a delivery point of the delivery device.
  • the negative pressure existing at the delivery point can be broken and neutralized by means of compressed air for delivery of a product segment.
  • the invention is also applicable to a device for branching off product segments from a product flow of the energy cell producing industry.
  • the device advantageously has a rotatably driven delivery drum, which is set up to hold and transport a product segment on the lateral surface of the delivery drum by means of suction force, and a rotary-driven receiving drum with at least one vacuum sector that can be subjected to negative pressure, in order to move a product segment by means of suction force to keep and transport on the lateral surface of the receiving drum.
  • the device can advantageously be controlled in such a way that, as a result of a switching signal for transferring a product segment, a higher suction force is generated on the receiving drum relative to the suction force on the delivery drum at least in one transfer area between the two drums.
  • the eighth aspect of the invention takes into account the basic functional principle of a transfer, which is based on the fact that the receiving side exerts a greater force on the product segment than the transferring side. This difference in force is advantageously generated by negative pressure of different strengths. Therefore, for the purpose of transferring a product segment, the receiving drum is supplied with a stronger vacuum than the delivering drum.
  • a compressed air device on the receiving side which can be switched by means of a valve, for example, is preferably provided for conducting compressed air to a receiving point of the receiving drum.
  • the compressed air line on the discharge side and the compressed air line on the intake side are advantageously connected in such a way that at any given time only one of the two compressed air lines applies compressed air to the assigned discharge point or intake point.
  • compressed air can be fed to the transfer point in both drums involved (delivery drum and receiving drum). However, only one side (discharge side or intake side) is pressurized with compressed air at any given time. If the compressed air is present on the receiving side, the negative pressure is broken here and the product segment is transported on the first drum (discharge drum). When the compressed air is present on the dispensing side, the vacuum is broken here and the product segment is transferred to the second drum (receiving drum).
  • the compressed air can, for example, be fed into the control bodies of the drums via a 3/2-way valve; each of the control bodies is then connected to an outlet of the valve. The signal which position the valve assumes comes from the machine control. This ensures that only one side is ever supplied with compressed air.
  • Several valves can also be provided in order to implement a transfer, for example one valve per drum (delivery drum and receiving drum).
  • the receiving drum preferably has at least one suction pressure-free sector which has no suction pressure application or has a lower suction pressure application relative to the suction force on the delivery drum.
  • the rotational position of the receiving drum can preferably be controlled in such a way that the suction-pressure-free sector can be positioned in the transfer area to convey a product segment on the delivery drum, and the vacuum sector can be positioned in the transfer area to transfer a product segment to the receiving drum.
  • the invention takes into account that the vacuum level usually cannot be switched quickly enough.
  • the receiving drum is therefore designed with at least one sector in which the lateral surface is not supplied with negative pressure.
  • the receiving drum is positioned in such a way that the sector that is not supplied with vacuum faces the first. However, if a product segment is to be taken over, the receiving drum is set in motion in such a way that an area that is supplied with vacuum takes over the product segment.
  • the aspect of the invention described above relates to switches in the machine, at which the product flow of the product segments (composite units, monocells, electrode sheets or separator sheets) is separated into a number of possible paths.
  • the decision as to which product segment takes which path is made, for example, in the machine control based on the properties or designs of the product segments. Since these divisions do not follow a fixed pattern, the transfer to the points should be switchable and activated by the machine control.
  • the invention meets these requirements in the manner described above.
  • a further aspect of the invention relates to a machine in the energy cell producing industry, comprising at least one device as described above and an electronic control device which is designed to output a switching signal when a product segment is requested to be removed or handed over.
  • a collecting device for the machine is advantageously provided.
  • at least part of the collecting device can be moved out of the machine through a removal sluice or extends through a removal sluice into the machine environment. After filling, this part of the collection device (e.g. collection container or conveyor belt) moves to the central removal lock. There must therefore only be one lock opening in the machine in order to remove removed product segments from the machine, so that the process climate inside the machine is not unnecessarily disturbed.
  • a ninth aspect of the invention is based on the object of providing an intermediate product, a method and a machine which overcome the previous disadvantages and enable improved handling in the production process.
  • the above object is achieved according to the ninth aspect of the invention with the features of claim 18.
  • an intermediate product is proposed for the production of composite elements in the industry producing energy cells, the intermediate product having a conductor foil which is at least partially coated with an anode material or a cathode material, the intermediate product having an uncoated contact tab of the conductor foil which is on a first edge side of the intermediate product is arranged.
  • the intermediate product has at least one retaining tab on the first edge side and/or on a second edge side, which is aligned parallel to the first edge side, and/or on a third edge side, which is aligned perpendicular to the first edge side.
  • the at least one retaining tab preferably protrudes on an edge side or protrudes from the base area, which is rectangular, for example.
  • the at least one holding tab is therefore an additional geometric element, in particular next to the contact tab, which expands the base area.
  • the at least one retaining tab is in addition to and different from the contact tab. Accordingly, the contact tab and the retaining tab are separate from one another and differ, for example, because of their position on the intermediate element.
  • the holding tab is intended for holding the intermediate product and is therefore preferably not covered by other elements.
  • the at least one retaining tab is therefore preferably accessible in all phases of a stacking process, for example. It is particularly advantageous that the holding tab is provided in addition to the contact tab for holding the intermediate product.
  • the contact lug which is actually intended for the electrical line in a later energy cell, can preferably also be used to hold the intermediate product.
  • the intermediate product can therefore preferably be picked up and/or lifted on the at least one holding tab and on the contact tab. In this way, an advantageous vertical lifting perpendicular to the base area of the intermediate element is possible, which particularly simplifies stacking processes of several intermediate elements.
  • the intermediate element can be gripped and moved, for example, by means of vacuum grippers or mechanical grippers on the at least one holding tab and also on the contact tab.
  • the intermediate product is preferably an electrode sheet from which an energy cell, in particular a battery cell, can be formed in a stacked arrangement with other sheets.
  • further fixing also referred to as lamination
  • lamination By providing and using the retaining tabs on the intermediate products, further fixing, also referred to as lamination, can be dispensed with when producing a stacked arrangement of segments or intermediate products, e.g. monostacks.
  • any adhesive strips for fixing proposed intermediate elements can be dispensed with.
  • two retaining tabs can be provided.
  • An arrangement of holding tabs on the third edge side is particularly advantageous if the partial coating of the conductor foil takes place intermittently, resulting in an uncoated area on the third edge sides, which is perpendicular to the first edge side with the contact tab.
  • the intermediate product has two holding tabs at least on one of the edge sides.
  • the intermediate product has two holding tabs on one of the edge sides, which are symmetrical to a central axis perpendicular to this edge side.
  • the symmetrical arrangement of the holding tabs enables a uniform loading when picking up, handling and/or fixing the intermediate product.
  • the at least one holding tab is arranged in a corner of two edge sides. This enables optimal load application when handling without folding down the corners and/or adjacent edges.
  • the contact tab and/or at least one retaining tab have a through hole. This enables simple positioning, for example by probing a geometrically matching positioning means, e.g. a bolt, in the sense of a form fit.
  • a geometrically matching positioning means e.g. a bolt
  • the at least one retaining tab is uncoated.
  • An uncoated retaining tab enables better gripping or picking up, since the conductor foil can be fixed directly with a detachable connection.
  • the conductor foil is usually better suited for the transmission of mechanical loads than the coating with an anode or cathode material. Furthermore, this prevents detachment of active material from the coating and improves the degree of utilization of the active materials.
  • a composite element with an intermediate product as described above and at least one separator film in a stacked arrangement is also proposed, with the at least one retaining tab of the intermediate product protruding beyond the separator film at an outer edge of the separator film.
  • an intermediate product arranged under the separator film can still be gripped from above by the holding tab, which considerably simplifies handling.
  • the overlying separator film can be picked up together with the underlying intermediate product without the separator film itself having to be gripped or held directly.
  • the composite element in the stacked arrangement be provided with at least one intermediate product with a conductor foil, which is partially coated with an anode material, and at least one intermediate product with a conductor foil, which is partially coated with a cathode material, the intermediate products are separated from each other by the at least one separator sheet in the stacked arrangement.
  • the intermediate products with anode material and cathode material each have at least one holding tab, so that the intermediate products can also be gripped, held and/or picked up at least on the holding tabs in the stacked arrangement.
  • the at least one retaining tab of the at least one intermediate product be covered with a conductor foil that is partially coated with an anode material
  • the at least one retaining tab of the at least one intermediate product be covered with a conductor foil that is partially coated with a cathode material.
  • both intermediate products in the stacked arrangement can be gripped or fixed independently of one another on the holding tab and preferably also on the contact tab, so that all intermediate products can be gripped directly when picking up a composite element.
  • This is favored by the fact that the retaining tabs protrude beyond the outer edge of the separator film, which allows handling independently of the separator film.
  • the at least one holding tab can also be used in the end product for a second purpose as a secondary contact tab.
  • a number of current connection points with the same polarity can be provided in a later battery cell, possibly on different edge sides.
  • the conductor foil has a contact tab on the first edge side in the uncoated area, or
  • the separation of at least one corresponding section of the conductor foil on an edge side enables the simple and favorable formation of the holding tab.
  • the retaining tab or retaining tabs are formed integrally at least with the conductor foil of an intermediate product, so that retaining forces can be introduced and/or passed on via the conductor foil. According to a further development, it is proposed that at least one section of the conductor foil be separated on the first, second and/or third edge side with the formation of at least one holding tab on an uncoated area of the conductor foil.
  • the severing does not occur through an anode or cathode active material, allowing for a clean severing process without affecting the active materials.
  • no coated anode or cathode material is separated, which is then no longer available for the end product, so that the comparatively more valuable anode and cathode materials can be better utilized.
  • two retaining tabs are formed on one of the edge sides.
  • These two retaining tabs can be formed, for example, by separating or notching at least one section between the two retaining tabs, as a result of which a lateral boundary can be created in one work step, for example for two retaining tabs.
  • two holding tabs be formed on one edge side symmetrically to a central axis perpendicular to this edge side. A uniform load distribution can therefore be achieved, for example, on these two holding tabs.
  • At least one holding tab is formed in a corner of two edge sides.
  • the retaining tab is already delimited laterally by one of the two edge sides, which simplifies the formation of the retaining tabs, in particular by cutting off a section between two retaining tabs arranged in the corners on one edge side. Therefore, for example, the section between the two retaining tabs to be formed in the corners can be simply snapped out.
  • the step is proposed: cutting the conductor foil to form a third edge side, the third edge side being oriented perpendicularly to the first edge side.
  • Cutting the conductor foil to form a third edge is particularly advantageous if a holding tab is provided in a corner of the third edge, so that cutting to form a third edge simultaneously results in a delimitation for a holding tab on the third edge. If a section of the conductor foil has already been severed on the first and/or second edge side, the cutting can form a holding tab on two intermediate products.
  • At least one section of the conductor foil is separated by punching.
  • a chip-free and dust-free separation can be achieved in a favorable manner by means of punching, with the separated part being able to be removed easily.
  • the step is proposed: perforating the at least one holding tab and/or contact tab.
  • the perforation can be done, for example, by punching.
  • the perforation can be carried out, for example, in a common work step with a separation of at least one section of the conductor foil to form at least one holding tab, for example also by punching.
  • a machine for producing an intermediate product is also proposed, which is set up to carry out the production method described above.
  • a method for handling an intermediate product or composite element is also proposed, with the following steps: picking up an intermediate product or a composite element, the picking up being effected by means of a detachable connection on at least one holding tab.
  • Picking up an individual intermediate product or a composite element on a retaining strap enables secure fixing, rapid conveyance and precise placement in automatic stacking processes of intermediate products to form a stacked arrangement or formation or composite elements for further processing steps, for example to form a battery cell.
  • the receiving takes place by means of the at least one detachable connection on the at least one holding lug and at the same time by means of a detachable connection on a contact lug.
  • the picking up can take place at several points, for example on two retaining tabs and a contact tab of an intermediate product, so that the picking up of the generally limp intermediate products and/or composite elements can take place without any buckling.
  • this also increases the possible processing speed.
  • the at least one detachable connection is produced by a pincer gripper.
  • a detachable connection can be achieved by means of a pincer gripper, which enables the intermediate product and/or composite element to be conveyed quickly.
  • the at least one detachable connection is established by at least one vacuum gripper.
  • the detachable connection can only be made on one side, which further improves handling.
  • a vacuum gripper is particularly advantageous when the conductor foil is not coated with an anode or cathode material.
  • alternative fixing elements can also be used.
  • the step is proposed: positioning and depositing the intermediate product with a conductor foil partially coated with a cathode material and/or the intermediate product with a conductor foil partially coated with an anode material and/or a composite element.
  • the positioning and depositing of the intermediate product can be used to form a stacked arrangement or to feed it to further processing.
  • the positioning takes place on an alignment element which engages in at least one through-hole of the contact tab and/or the at least one retaining tab. It can be achieved in this way a precise placement with high repeatability.
  • the following step is proposed: detaching the at least one holding tab.
  • the separation preferably takes place when the handling of an intermediate product or of the composite element has largely been completed.
  • the intermediate product can therefore be further processed into an end product, so that the benefit of the at least one retaining tab is essentially utilized and the retaining tab or retaining tabs can be separated.
  • the detachment can take place, for example, by cutting. After the retaining tab has been separated, the geometric shape again corresponds to the shape customary in the prior art.
  • the retaining tab can remain or remain in place. It is further proposed that the at least one retaining tab is used as a secondary contact tab in an end product, for example a battery cell, in addition to the contact tab.
  • a tenth aspect of the invention is based on the object of providing a method, an intermediate product and a machine which reduces the costs for the production environment and enables greater flexibility in production.
  • a method for producing a composite element with the features of claim 19 is proposed. Accordingly, a method for producing a composite element of the energy cell producing industry in a pouch is proposed with the following steps: Closing a dry composite element in a pouch film with at least one sealing seam to produce a sealed pouch, wherein at least one section of the sealing seam is a temporary sealing seam.
  • a composite element is, for example, an arrangement of segments consisting of at least one electrode and at least one separator.
  • dry composite refers to the composite not being saturated and/or wetted by a liquid electrolyte and thus non-operational.
  • a composite element preferably comprises at least one conductor foil with a cathode material, a separator and a conductor foil with an anode material in a layered structure.
  • Composite elements can also be precursors of battery cells, for example, or represent their basic structure, for example.
  • the section of the sealed seam which is a preliminary sealed seam, is intended and set up for a later opening of the sealed seam or for separating the sealed seam in this section.
  • the temporary sealing seam thus serves to temporarily seal the dry composite element in the pouch.
  • the dry composite is preferably free of liquid electrolyte.
  • the dry composite element is intended for later impregnation in a liquid electrolyte in this pouch in order ultimately to form a composite element or battery with an electrolyte in a pouch.
  • the sealed seam encloses the dry composite element with a peripheral seam. Furthermore, several intersecting seam courses can be provided, which together form a circumferential seam. In an alternative advantageous embodiment, the pouch film is folded over so that a completely circumferential seam is not required to close the pouch.
  • the first interrupted sealing seam connects the pouch film along the seam, with at least one interruption, for example two or three interruptions, in the course of the interrupted sealing seam.
  • the arrangement between the temporary sealing seam and the dry composite element in the pouch means that the interruptions in the first interrupted sealing seam are surrounded by the temporary sealing seam, so that the interruptions in the first interrupted sealing seam due to the arrangement of the temporary sealing seam do not open the pouch show outside.
  • the following step is proposed: production of a second interrupted sealed seam with at least one interruption, the second interrupted sealed seam being arranged between the preliminary sealed seam and the dry composite element in the pouch, the at least one interruption of the second interrupted sealed seam with the at least corresponds to an interruption of the first interrupted sealing seam.
  • the second interrupted sealing seam connects the pouch film along the seam, with at least one interruption, for example two or three interruptions, in the course of the interrupted sealing seam.
  • the arrangement between the temporary sealing seam and the dry composite element in the pouch means that the interruptions in the second interrupted sealing seam are surrounded by the temporary sealing seam, so that the interruptions in the second interrupted sealing seam do not open the pouch due to the arrangement of the temporary sealing seam show to the outside.
  • the interruptions in the first and second interrupted sealing seam can correspond, for example, with regard to their number, arrangement and/or orientation.
  • the at least one interruption of the second interrupted sealing night more preferably corresponds to the at least one interruption of the interrupted sealing seam, preferably forming a common opening axis. More preferably, the opening axis runs perpendicular to the course of the first and second interrupted sealing seam.
  • the step is proposed: inserting at least one passage element before the production of the first and/or second interrupted sealing seam to form an interruption in the first and/or second interrupted sealing seam.
  • the passage element can, for example, be a small tube or a shaped element with a bore, which keeps the interruption of the first and/or second sealing seam open, so that the two inner surfaces of the pouch film preferably do not touch in the area of the interruption. Accordingly, the passage element has a passage. It is preferable to use the passage element with its passage perpendicular to the course of the first and/or second interrupted sealing seam in the adjoining area. Furthermore, it is preferable to provide several passage elements, for example three passage elements. The passage element is preferably used in two corresponding interruptions in the first and second interrupted sealing seam.
  • the passage element can be welded to the pouch film, for example. This fixes the position of the passage element relative to the pouch, and the possible opening of the pouch can be defined solely via the passage of the passage element.
  • the following step is proposed: inserting at least one valve before the provisional sealing seam is produced in order to integrate the valve in the provisional sealing seam.
  • the valve in the provisional sealing seam can prevent gas exchange between the pouch and the environment, so that the pouch with the dry composite element can be transported or stored in a wide climate-controlled area.
  • the following step is proposed: transport of the sealed pouch with the dry composite element.
  • the sealed pouch with the dry composite element is preferably transported in a vertical orientation with the temporary sealing seam pointing upwards, so that the dry composite element does not slip towards the temporary sealing seam. This is particularly advantageous when a larger distance is provided between the temporary sealing seam and the dry composite element.
  • the sealed pouch with the dry composite element can be transported, for example, to a further processing station, with the ambient conditions, such as air humidity, being possible within extended limits.
  • the sealed pouch with the dry composite element can be an advantageous intermediate product for the production of a composite element in the energy cell manufacturing industry with an electrolyte in a pouch, which in possible embodiments can be an independent product.
  • the sealed pouch with the dry composite element is preferably returned to a controlled atmosphere with appropriate air conditioning.
  • the following step is also proposed: opening and/or detaching the temporary sealing seam of the sealed pouch before filling the pouch in order to open the pouch again.
  • the separating and/or severing can be done, for example, by cutting the pouch, with the area of the pouch being opened or severed in which the provisional sealing seam is arranged. Accordingly, this section of the sealing seam is removed.
  • the pouch is then no longer closed, but has an opening corresponding to a dividing line for the separation or corresponding to the temporary sealing seam.
  • the temporary sealed seam is severed at least in two places. Accordingly, a remainder of the provisional sealing seam can remain on the open pouch with the dry composite element when it is separated. This can be the case, in particular, if a circumferential sealed seam is formed with the preliminary section from a number of seam courses that cross one another.
  • a connecting piece can also remain when the pouch is separated, so that the pouch film remains in one piece in this sense, but the sealed pouch is nevertheless opened.
  • the provisional sealed seam is preferably separated and/or separated between the provisional sealed seam and the first interrupted sealed seam. This results in an opening of the pouch with the dry composite element corresponding to the first and possibly also the second interrupted sealing seam.
  • the following step is proposed: filling the pouch with a liquid electrolyte.
  • the pouch can be filled with a liquid electrolyte via the valve in the temporary sealing seam.
  • the provisional sealing seam is accordingly preferably not to be opened before the pouch is filled with a liquid electrolyte.
  • the pouch can be filled via the at least one interruption in the first interrupted sealing seam or via the at least one interruption in the first and second interrupted sealing seam after the temporary sealing seam has been severed. Furthermore, in possible embodiments, the pouch can be filled via the at least one passage element of the first interrupted sealing seam or via the at least one passage element in the first and second interrupted sealing seam.
  • the final sealing seam closes the pouch after it has been filled with the liquid electrolyte.
  • the final sealed seam therefore preferably runs between the composite element in the pouch and the preliminary sealed seam, for example when at least one valve is integrated for filling. More preferably, the final sealed seam runs between the composite element in the pouch and the first interrupted sealed seam and/or the second interrupted sealed seam.
  • the provisional sealed seam is preferably separated between the provisional sealed seam and the final sealed seam. This is particularly advantageous after filling via at least one valve in the preliminary sealing seam. Any valves in the temporary seal can therefore be severed along with the temporary seal. When separating, the provisional sealing seam is severed at least in two places. Accordingly, a remainder of the provisional sealing seam can remain on the sealed pouch with the composite element with the electrolyte.
  • an intermediate product for producing a composite element in a pouch is also proposed, a dry composite element in a pouch film being sealed with a sealed seam, with at least one section of the sealed seam being a temporary sealed seam.
  • a method for producing a composite element in the energy cell-producing industry with an electrolyte in a pouch made from an intermediate product, with a dry composite element in a pouch film being closed with a sealing seam in the intermediate product, with at least one section of the sealing seam a preliminary seal seam is proposed with the step: ripping and/or detaching the preliminary seal seam of the pouch in order to open the pouch again.
  • a corresponding method enables an intermediate product, which has been transported through an environment that is not air-conditioned, to be processed further in an advantageous manner, so that further method steps can be carried out spatially separately, for example.
  • the opening of the pouch again takes place under controlled environmental conditions.
  • the entire volume to be air-conditioned can be reduced as a result.
  • the following step is proposed: filling the pouch with a liquid electrolyte after the temporary sealing seam has been cut open and/or detached.
  • the following step is proposed: sealing the pouch with a final sealing seam.
  • the following step is proposed: Separating the preliminary sealing seam after sealing the pouch with the final sealing seam.
  • the following step is proposed: detaching a first and/or second interrupted sealing seam after sealing the pouch with the final sealing seam.
  • a machine for the production of a composite element of the energy cell producing industry with an electrolyte in a pouch from an intermediate product is also proposed, the machine being set up to carry out the method steps described above.
  • the corresponding machine can further process the composite element in a pouch, for example at a remote position in a production plant, without a corresponding air-conditioning area being required over the entire distance. Furthermore, the machine can also be provided separately from in another production plant with a further increased spatial and/or organizational separation.
  • 1.1 shows a schematic cross-sectional view of a mono-cell stack for a battery cell
  • Fig. 1.2 is a perspective view of a machine for manufacturing monocell stacks
  • FIG. 1.3 shows a detailed view of the machine from FIG. 1.2 in the area of the feed section
  • FIG. 1.4 shows a detailed view of the machine from FIG. 1.2 in the area of the collecting and laminating section;
  • 1.5 is a detailed view showing the feeding of a separator web to the collection drum
  • FIG. 1.6 shows a detailed view of the machine from FIG. 1.2 in the area of the cutting and stacking section;
  • 1.7 is a perspective view of a machine for manufacturing stacks of monocells in a further embodiment
  • FIG. 1.8 shows a detailed view of the machine from FIG. 1.7 in the area of the feeding, collecting and laminating section;
  • 1.9 shows a detailed view of a machine in the area of the feeding, collecting and laminating section in a modified embodiment
  • 2.1 shows a view of a material web conveyed in the transport direction T in the area of a laser cutting device
  • 2.2 shows a side view of a material web conveyed in one plane in the area of a laser cutting device
  • FIGS. 2.1 and 2.2 shows a perspective view of a web segment cut by means of the laser cutting device according to FIGS. 2.1 and 2.2;
  • 2.4 shows a cross-sectional view of a cutting drum with a material web conveyed thereon and a laser cutting device cutting from the outside;
  • 2.5 shows a cross-sectional view of a cutting drum with material web conveyed thereon and a laser cutting device cutting out from the inside of the drum;
  • 2.6 shows a perspective view of a cutting device in a preferred embodiment
  • FIG. 2.7 shows a view of the cutting device from FIG. 2.6 approximately along the axis of the drum
  • Fig. 2.14A-2.14G a schematic representation of the sequence of a cutting process on a plurality of cutting drums:
  • 3.1 shows a cutting device with a cutting rotation device in the form of a cutting drum and a counter-rotation body in the form of a counter-drum;
  • FIG. 3.4 an overpressure of the cutting edges over the angle of rotation of the counter-drum
  • 3.5 shows a cutting drum with a counter-drum and spring-loaded cutting knives
  • 3.9 shows a counter-drum and a transfer drum according to a second embodiment
  • 3.10 shows a cutting drum with a counter-drum with a recess
  • 3.11 shows a cutting drum with a counter-drum with a recess and compressed air openings arranged therein;
  • 3.12 shows a cutting drum with a counter-drum with a recess and a suction device
  • 3.13 shows a cutting drum with a counter-drum with a recess and a pivoting element
  • 3.14 shows a counter-drum with a transfer drum and a pivoting element in a first position
  • 3.15 shows a counter-drum with a transfer drum and a pivoting element in a second position
  • 3.16 shows an enlarged representation of the cutting blade of the cutting drum with the counter blade of the counter drum in the circumferential direction
  • 3.17 shows an enlarged view of the cutting blade of the cutting drum with the counter-blade of the counter-drum perpendicular to the circumferential direction;
  • 4.1 shows a separating device with a cutting device and a pitch-changing drum according to a first embodiment
  • 4.6 shows an enlarged section of the separating device with a pitch-changing drum and a transfer device designed as a transport drum;
  • 5.1 shows a cell stacking system with a cell stacking device
  • 6.1 shows a segment with the conductor lugs and the adhesive strips before and after processing
  • 7.1 shows a machine according to the seventh aspect in a first embodiment
  • 7.10 shows a detailed view of a transfer device in a receiving state
  • 7.11 shows a detailed view of a transfer device in a delivery state
  • 7.12-7.14 a machine according to a fourth embodiment in a first, second and third process step
  • Fig. 7.18 shows a method of manufacturing a unit of the power cell manufacturing industry
  • 9.3 shows a schematic representation of an intermediate product with through-holes in the contact tab and the retaining tabs
  • 9.4 shows a schematic representation of a composite element made from two intermediate products and a separator film
  • 9.6 shows a schematic representation of a coated conductor foil with severed sections on two edge sides
  • 9.8 shows a schematic representation of a composite structure with concentric recesses
  • 10.2 shows a dry composite element in a pouch with a temporary sealed seam with a dividing line
  • 10.3 shows a pouch sealed with a final sealing seam with a composite element, an electrolyte and a further dividing line; 10.4 shows a dry composite element in a pouch with a preliminary sealed seam and a first interrupted sealed seam;
  • 10.5 shows a dry composite element in a pouch with a preliminary sealed seam and a first interrupted sealed seam with a dividing line
  • 10.6 shows a pouch sealed with a final sealing seam, with a composite element, an electrolyte, a first interrupted sealing seam and a further dividing line;
  • 10.7 shows a dry composite element in a pouch with a preliminary sealed seam and interrupted sealed seams and passage elements
  • 10.8 shows a dry composite element in a pouch with a preliminary sealed seam, interrupted sealed seams and passage elements with a dividing line
  • 10.9 shows a pouch sealed with a final sealing seam, with a composite element, an electrolyte, interrupted sealing seams, passage elements and a further dividing line;
  • 10.10 shows a dry composite element in a pouch with valves in a preliminary sealing seam
  • Fig. 10.13 two machines for carrying out the method with a transport section.
  • a mono cell 91 is a layer system consisting of layers placed one on top of the other, namely a separator 92, an anode 93, another separator 94 and a cathode 95.
  • a mono cell stack 90 a plurality of these mono cells 91 are stacked one on top of the other and with a final cell 96 completed.
  • This closing cell 96 consists, for example, of a separator 92, an anode 93 and a further separator 94 and ensures that the cell stack 90 is closed off from the outside with a separator 92, 94 in each case.
  • the cell stack 90 serves in particular to construct an electrochemical and/or galvanic accumulator (not shown), for example a lithium-ion accumulator.
  • the electrodes 93, 95 consist of typical electrode materials of an electrochemical and/or galvanic accumulator cell. In the case of a lithium-ion cell, for example, the electrodes contain lithium ions.
  • the separators are used to electrically insulate the electrodes from one another and consist, for example, of a plastic film, such as a thermoplastic material.
  • the cell stacks 90 described above are produced using a machine 10 .
  • rotatable or rotationally driven bodies are designed in particular as rotatable or rotationally driven drums 21, 21', 22, 22', 25, 25', 26, 26', 27, 29, 31, 34, 35, 38-51 .
  • the machine or manufacturing machine 10 conveys and processes starting materials with the conveying direction from left to right to form cell stacks 90 and comprises a feed section 11 for feeding starting materials, namely separator webs 80, 81 and electrodes 93, 95 which are supplied essentially endlessly, to a collecting and connecting section arranged downstream 12, in which the materials 80, 81, 93, 95 are brought together and superimposed.
  • the collecting and connecting section 12 comprises a connecting device 14 which connects the materials 93 , 80 , 95 , 81 placed one on top of the other to form an endless composite separator-electrode web 84 .
  • a cutting and stacking section 13 follows downstream of the collecting and connecting section 12 in the conveying direction formation of cell stacks 90.
  • the feed section 11 shown in detail in Figure 1.3 comprises balm guide elements 16, for example deflection elements such as deflection pins or rollers, and/or tensioning elements such as tension rollers, for the endless feed of the separator webs 80, 81 to the collecting device 17, to be explained later, of the collecting and laminating section 12 .
  • balm guide elements 16 for example deflection elements such as deflection pins or rollers, and/or tensioning elements such as tension rollers, for the endless feed of the separator webs 80, 81 to the collecting device 17, to be explained later, of the collecting and laminating section 12 .
  • the feed section 11 comprises electrode production sections 18, 19 for producing electrodes 93, 95, namely an anode production section 18 for producing individual anode sheets or anodes 93 and a cathode production section 19 for producing individual cathode sheets or cathodes 95.
  • the electrode production sections 18, 19 are preferably constructed in the same way . If the anode production section 18 is described below by way of example, the description can be transferred to the cathode production section 19; Corresponding parts of the cathode production section 19 are provided with primed reference symbols. It is conceivable for the machine 10 to have only one electrode production section 18, 19 for one type of electrode (for example anodes) and for the other type of electrode (for example cathodes) to be fed to the machine 10 in isolated form.
  • the electrode production sections 18, 19 have web guiding elements 16, for example deflection elements such as deflection pins or
  • the rotating cutting apparatus 20 is used to cut the endlessly fed electrode web, here the cathode web 83, into individual electrodes, here cathodes 95.
  • the cutting apparatus 20 comprises a knife shaft 21 and 21 in each case a cutting drum 22.
  • the knife shaft 21 is fitted with knives 23 along its circumference.
  • Corresponding grooves 24 are provided on the cutting drum 22 around its circumference.
  • the knife shaft 21 is arranged tangentially to the cutting drum 22 .
  • the rotary drives of the blade shaft 21 and the cutting drum 22 are coordinated in such a way that a blade 23 that comes into contact with the blade shaft 21 and the cutting drum 22 engages in a groove 24 of the cutting drum 22 in order to cut the electrode track 83.
  • the electrode web 83 is picked up by the cutting drum 22 at a first point on the circumference, conveyed in the direction of rotation of the cutting drum 22, cut at a second point on the circumference by a knife 23 of the knife shaft 21, so that individual electrodes 95 are formed, and conveyed further by the cutting drum 22 by means of a vacuum to to a third circumferential point at which the electrodes 95 are delivered to a subsequent conveying element, here the transport drum 25.
  • the electrodes 95 are held on the transport drum 25 with a vacuum and conveyed further by rotation.
  • the transport drum 25 can also be used to clean the cut edges of the electrodes 95 and in this case can be referred to as a transport/cleaning drum.
  • the pitch changing drum 26 serves to provide the electrodes 95 with a distance from one another in the longitudinal direction. This is necessary because in the monocell 91 the separators 92, 94 are usually wider than the electrodes 93, 95.
  • the pitch-changing drum 26 can also be arranged in front of the transport drum 25 in the conveying direction (reverse order).
  • a central element of the machine 10 is the collecting device 17 , which is in particular rotatable and is designed here as a collecting drum 27 .
  • the cut electrodes 93, 95 and the uncut separator films 80, 81 are placed on the collecting device 17.
  • the structure of a monocell 91 shown in Figure 1.1 determines the order in which the blanks, i.e. the electrodes 93, 95, and the separator webs are laid down on the collecting device 17, here the collecting drum 27.
  • the cathode sheets or cathodes 95 are first deposited on the collection drum 27 with the spacing created by the pitch changing drum 26 at a first circumferential position (tangent point between the pitch changing drum 26 and the collecting drum 27). Immediately thereafter, at a second circumferential position (tangential point between the last deflection roller 16 and collecting drum 27), the separator web 80 is laid over the cathodes 95.
  • the distance d1 between the first circumferential position and the second circumferential position is advantageously less than the extent of the electrodes 95 in the conveying direction, so that the electrodes 95 are always securely held by the separator web 80 placed above them.
  • the cathode 95 is thus held by the transferring drum 26 until it is received and fixed between the collecting drum 27 and the separator film 80 subsequently supplied. This requires the application of a corresponding web tension in the separator film 80 .
  • the process described is then carried out in the same way with the anode 93 and the second separator film 81 .
  • the other electrodes here the anode sheets or anodes 93
  • the anode 93 are placed on the collecting drum 27 at a third circumferential position (tangential point between the pitch changing drum 26' and the collecting drum 27) with the spacing created by the pitch changing drum 26'.
  • the anode 93 is positioned relative to the cathode 95 in accordance with the geometric requirements of the monocell 91 .
  • the further separator web 81 is laid over the anodes 93.
  • the distance d' between the third circumferential position and the The fourth circumferential position is advantageously less than the extent of the electrodes 93 in the conveying direction, so that the electrodes 93 are always held securely by the separator sheet 81 placed above them.
  • a reverse feed sequence is possible, i.e. the anodes 93, separator foil 80 and then the cathodes 95 and separator foil 81 can be fed to the collecting device 17 first if a different structure of the cell stack 90 or the monocells 91 is desired.
  • An external electrode 93, 95 can also be implemented, for example by adding an additional auxiliary foil.
  • the material formation consisting of separator webs 80, 81 and electrodes 93, 95 inserted between them are conveyed further by the rotatingly driven collecting drum 27 and at a fifth circumferential position, which is at least 135°, more preferably at least 180° angular distance from the fourth circumferential position, by means of a connecting device 14, here a laminating device with a laminating roller 29, are connected to one another, as a result of which a uniform, endless composite separator-electrode web 84 is produced.
  • the laminating roller 29 works with a defined force on the laminating drum 27 in order to carry out the laminating process.
  • the result is therefore an endless web 84 of cut and positioned electrodes 93, 95, which are connected to the endless separator films 80, 81 by bonding and/or laminating.
  • the lamination is preferably performed under pressure between the collection drum 27 and the laminating roller 29 which tangentially contacts or presses tangentially against the collection drum 27 and laminates the materials 80, 81, 93, 95 conveyed therebetween.
  • the collecting drum 27 can thus also be referred to as a laminating drum or as a collecting and laminating drum. In its function as a laminating drum 27, this preferably has a smooth surface, which is favorable for the laminating process.
  • the laminator 14 may be a hot laminator or a cold laminator.
  • the laminating drum 27 can preferably be heated, for example electrically or by passing a liquid or gaseous heated medium through it.
  • an electric heating device 30, for example is preferably provided on the outside of the circumference of the collecting/laminating drum 27 between the fourth circumferential position and the laminating roller 29, which extends, for example, in an arc around the collecting/laminating drum 27, as shown in FIG. 1.4.
  • a cooling device 31 for the separator-electrode composite web 84 is preferably provided below.
  • This can be, for example, a rotatable cooling body, in particular a cooling drum 71 , to which the laminated composite web 84 is transferred from the laminating drum 27 .
  • the cooling device 31 can be cooled, for example, electrically or by passing a cooling medium through it to withdraw heat from the warm composite web 84 in a targeted manner.
  • the materials of the composite web 84 recover their usual mechanical properties more quickly.
  • An advantageously linear test section 32 can be provided between the connecting device 14 and the cutting device 15 , which has one or more test devices 33 , in particular for testing the positions of the anodes and cathodes in the composite web 84 .
  • one or more optical testing devices 33 such as one or more cameras, can be provided.
  • the subsequent cutting and stacking section 13 extends from the cutting device 15 to the stacking station 28 and is shown in Figure 1.6.
  • the composite sheet 84 is cut into individual separator-electrode composite units by means of the cutting device 15, for example in the strip between two electrodes, as a result of which monocells 91 are produced as shown in FIG. 1.1. It is also conceivable to cut sheets with a plurality of monocells 91 which are cut into individual monocells 91 at a later point in time.
  • the cutting device 15 is advantageously constructed in the same way as the cutting devices 20, 20' and preferably comprises a cutting drum 34 with grooves 36, over which the composite web 84 is guided, and a knife roller 35 with knives 37, which are tangential to the cutting drum 34 and through the engagement of the Knife 37 cuts the composite web 84 into the grooves 36 as a result of the coordinated rotation of both drums 34, 35.
  • the cutting and stacking section 13 preferably includes a subsequent test body in the form of a test drum 38, on which electrical properties of the individual composite units or monocells 91 are measured using a corresponding test device. For example, an examination of the geometric shape of the electrodes 93, 95 and/or the electrical resistance of the monocells 91 can be carried out.
  • a rotatable transport body in particular a transport drum 39
  • a further rotatable test body in particular a further test drum, can also be provided, for example for the geometric shape of the electrodes 93, 95 when the electrical resistance of the monocells 91 is tested on the test drum 38, or vice versa.
  • the cutting and stacking section 13 preferably includes an ejection device in the form of an ejection drum 40 that follows the at least one test drum 38.
  • Composite units or monocells 91 that are evaluated as faulty or defective by the test device on the at least one test drum 38 or one of the test devices 33. for example with regard to their shape, or if the electrical resistance is not within an allowable tolerance range, the ejector drum 40 can preferably eject downwards.
  • the downstream system of rotatable bodies is used to stack the composite units or monocells 91.
  • at least one, preferably two rotatable segment bodies, in particular segment drums 42, 43 passes.
  • Each segmented drum 42, 43 takes a compound unit or mono cell 91 from the removal drum 41 and places it in a magazine of a respectively associated rotatable magazine body. pers, in particular a magazine drum 44, 45 from. In this way, a cell stack 90 is stacked in the magazine of the magazine drum 44, 45.
  • the magazine drum 44, 45 rotates, for example by 90° or 180°, until the next empty magazine reaches the effective range of the corresponding segment drum 42, 43 and can be filled.
  • the finished cell stacks 90 are discharged from the magazine drum 44, 45, for example, downwards for further processing.
  • Stacking station 28 can have at least one further rotatable removal body, in particular a further removal drum 47, with corresponding rotatable segment bodies, in particular segment drums 48, 49 and rotatable magazine bodies, in particular magazine drums 50, 51, in order to increase the processing speed in stacking station 28.
  • Composite units or monocells can be transferred from the removal drum 41 to the further removal drum 47 by means of a rotatable transfer body, in particular a transfer drum 46 .
  • the number of transfer bodies, in particular transfer drums 46 between the removal bodies, in particular removal drums 41, 47, is advantageously odd, so that the orientation of the monocells 91 in all cell stacks 90 is the same.
  • each segmented body in particular each segmented drum 42, 43, 48, 49, advantageously has at least one removal plunger 63, 64, which is mounted such that it can rotate about the body axis, in particular the drum axis, and which is set up in each case to accommodate a segment or a composite unit 85 or a monocell 91.
  • each segmented body, in particular each segmented drum 42, 43, 48, 49 has a plurality of, for example, two extraction rams 63, 64 mounted rotatably about the body axis, in particular drum axis, as shown in FIG. 1.6.
  • the advantage of a plurality of removal stamps 63, 64 per segment body, in particular segment drum 42, 43, 48, 49, is an increased processing speed because, for example, one removal stamp 63 picks up a segment while the other removal stamp 64 releases another segment in parallel.
  • Each pair consisting of a segment body, in particular segment drum 42, 43, 48, 49 and an associated magazine body, in particular magazine drum 44, 45, 50, 51, is preferably provided with a machine-mounted stripping device in the form of a comb-like stripping part 77 with a plurality of stripping webs arranged parallel to one another.
  • Each removal plunger 63, 64 has parallel slots 78 on its outer circumference, in which the stripping part 77 engages with its stripping webs during the rotary movement of the removal plunger 63, 64, as a result of which the composite unit held on the outside of the removal plunger 63, 64 during the rotary movement of the Removal stamp 63, 64 in a magazine of the corresponding magazine body, in particular magazine drum 44, 45, 50,
  • the machine 10 is advantageously designed essentially as a rotating body machine, in particular a drum machine. Accordingly, at least an overwhelming majority of the conveying and functional units in the machine are in the form of bodies driven in rotation, in particular drums 21, 21', 22,
  • the rotational drive of the rotatable bodies, in particular drums can be electric, for example.
  • Each rotatable body, in particular each drum can have its own electrical rotary drive (individual drive), for example. All bodies, in particular drums, rotate continuously or quasi-continuously, but not necessarily at a constant speed.
  • the materials are preferably held by means of a vacuum. Under certain conditions, mechanical holding elements are possible in addition to or as an alternative to vacuum. Holding the materials, in particular the electrode blanks 93, 95, on the collecting and laminating drum 27 with mechanical elements and/or with a vacuum is possible, although not mandatory, and must be carried out in such a way that unwanted impressions are avoided.
  • FIGS. 1.2 to 1.6 Preferred alternative embodiments of the machine 10 are shown in Figures 1.7 to 1.9. These differ from the embodiment according to FIGS. 1.2 to 1.6 in that one or more essential functions in the collecting and connecting section 12 are carried out by means of endless belt devices 55A, 55B, 57 (instead of rotary driven drums).
  • the gathering and connecting section 12 advantageously includes at least one, preferably at least two, endless belt devices 55A, 55B, the primary function of which is to transfer heat to the formation of material 52 from a respective heater 30A, 30B, respectively. This is explained in more detail below.
  • Each endless belt device 55A, 55B has a corresponding, endlessly revolving endless belt 56A, 56B.
  • Each of the endless belts 56A, 56B is deflected by means of deflection pins or rollers 59.
  • one of the deflection pins or rollers 59 is advantageously designed as a drive roller in order to be able to continuously drive the corresponding endless belt 56A, 56B.
  • the part of the endless belt 56A, 56B facing the material formation 52 is moved in its conveying direction and preferably at the same speed as the material formation 52, so that there is no relative movement between the endless belt 56A, 56B and the material formation 52, which may be subject to friction.
  • a heating device 30A, 30B facing towards the material formation 52 is preferably arranged in the loop formed by the endless belt 56A, 56B.
  • the heating device 30A, 30B heats that part of the respective associated endless belt 56A, 56B which faces the material formation 52 .
  • the parts of the endless belt 56A, 56B facing the material formation 52 pass on the heat to the material formation 52 arranged in between.
  • the endless belt 56A, 56B consists of a sufficiently heat-conducting material.
  • it can be a stainless steel band.
  • the heating devices 30A, 30B can be shaped and arranged linearly, which is easier to implement than the arc-shaped arrangement around a collecting and laminating drum 27 (FIGS. 1.2 and 1.4).
  • the collecting and connecting section 12 has an endless belt device 55A, 55B and a heating device 30A, 30B on both sides of the material formation 52, namely a lower endless belt device 55A and lower heating device 30A, which are below the material formation 52 are located, and an upper endless belt device 55B and upper heater 30B located above the material formation 52.
  • the two endless belt devices 55A, 55B, in combination with the two heating devices 30A, 30B, allow the material formation 52 to be heated advantageously on both sides before lamination.
  • the endless belts 56A, 56B can contact the formation 52 of material.
  • the material formation 52 can be placed on and guided through the lower endless belt 56A.
  • this can speaking endless belt 56A, 56B have a friction-reducing coating or be particularly smooth. Non-contacting embodiments are possible.
  • Embodiments with a heat-transferring endless belt 56A or 56B on only one side of the material formation 52 are conceivable.
  • a laminating roller 29A, 29B is preferably provided on both sides of the material formation 52 in order to enable lamination on both sides and thus a firmer connection of the materials in the material formation 52.
  • the laminating rollers 29A, 29B are preferably arranged at the same position in the conveying direction, as can be seen from Figures 1.7 to 1.9, so that each laminating roller 29A (29B) can absorb the forces exerted by the other laminating roller 29B (29A) in the manner of a counter bearing. Embodiments with only one laminating roller 29A or 29B are possible.
  • the laminating rollers 29A, 29B can be arranged in the loop formed by the respective endless belt 56A, 56B, as shown in FIGS. 1.7 to 1.9.
  • the laminating rollers 29A, 29B each press on the section of the endless belt 56A, 56B facing the material formation 52 and this transfers the laminating pressure to the material web 52 arranged in between.
  • the laminating rollers 29A, 29B outside of the loop formed by the respective endless belt 56A, 56B are arranged immediately following the endless belt devices 55A, 55B. In this case, the laminating rollers 29A, 29B each press directly onto the material formation 52 arranged between them.
  • the or each endless belt device 55A, 55B preferably has a cooling device 54A, 54B which removes the heat introduced from the machine 10 by the heating device or devices 30A, 30B.
  • the cooling device 54A, 54B can advantageously be provided and arranged for cooling an associated endless belt 56A, 56B and enclose the associated endless belt 56A, 56B for this purpose, as shown in FIGS. 1.7 to 1.9.
  • the cooling device 54A, 54B is advantageously arranged on the return side of the endless belt 56A, 56B facing away from the material formation 52, i.e. on the return run, as shown in Figures 1.7 to 1.9.
  • the cooling devices 54A, 54B can advantageously be shaped and arranged linearly. This has advantages compared to the cooling drum 71 according to FIGS. 1.2 to 1.4 because the coolant or the cooling stream can be supplied more easily.
  • test section 32 with one or more test devices 33 advantageously follows in these embodiments as well.
  • the collecting and connecting section 12 has a further endless belt device 60 with a corresponding endless belt 57, which is arranged in the conveying direction in front of the previously described endless belt devices 55A, 55B.
  • the further endless belt device 60 serves as a collecting device for merging and superimposing the materials 93, 80, 95, 81 fed by the feed section 11 and placed on the endless belt 57 in the appropriate order Material formation 52 formed on the endless belt 57.
  • the endless belt device 60 also has at least one deflection pin or a deflection roller 61 for belt deflection and at least one drive roller 62 for the continuous circulation of the endless belt 57 .
  • their function is taken over here by the lower endless belt device 55 A in the upstream collecting endless track section 58.
  • the lower endless belt device 55A, 60 and/or 55A can be either divided (FIGS. 1.7, 1.8) or continuous (FIG. 1.9).
  • the further endless belt device 60 according to Figures 1.7 and 1.8 and the upstream endless belt section 58 according to Figure 1.9 form the collecting device 17 in these embodiments, which is therefore designed here with an endless belt 57 and/or 55A and not in the form of a rotating drum.
  • the cutting body is designed as a cutting drum 110 and the other cutting body is designed as an additional cutting drum 138 .
  • FIG. 2.1 shows a material web 160 moving at a constant speed, for example made of electrode material, which is to be cut into sections or segments 161, for example electrode sheets, with a rectangular base area.
  • FIG. 2.1 shows the length a and the width b of the segment 161 to be cut or of the electrode to be cut.
  • Each electrode has a contact tab 162 on a side edge 166 of the material web 160 for making contact with the electrode in the finished battery cell.
  • the material web 160 is transported in a transport direction T on a cutting drum 110 that is driven to rotate in a direction of rotation R (see FIGS. 2.4 to 2.13).
  • a laser 124 (see Figures 2.6, 2.8-2.13) is positioned in such a way that the focal point of the laser beam is fixed at point c on the cutting drum 110 and thus on the material web 160, and the laser beam is allowed to traverse the diagonal d by means of beam guiding elements, while the cutting drum 110 rotates, a right-angled cut is obtained on the material web 160 since the material web 160 moves in the transport direction T during the cut.
  • the laser beam must therefore be moved over the material web 160 in a transverse direction Q for right-angled cutting (cross-cutting) and at the same time tracked in the transport direction T of the material web 160 being moved.
  • the cut is thus made along a diagonal d from the starting point 163 at one side edge 165 of the material web 160 to the end point 164 at the other side edge 166 of the material web 160 .
  • a cut can also be made in the other direction, i.e. from bottom to top in Figure 2.1.
  • FIG. 2.1 With a fixed position of the laser 124, or more precisely the exit point 134, this is in FIG. 2.1 at a point perpendicular to the material web 160 to be cut.
  • FIGS Laser beam at the end of the cut, ie at the end point 164.
  • Ren 2.2 to 2.5 both laser beams Li, Le are shown. However, it goes without saying that only one laser beam L impinges on the material web 160 at any given time.
  • FIG. 2.2 shows an example of a material web 160 conveyed in one plane, for example by means of a belt conveyor. If the material web 160 to be cut is viewed from the side, as in FIG. (Another angle between the laser beam Li, Le and the normal to the material web results in a plane perpendicular to the conveying direction, this is not considered here.)
  • the result of this cutting process is a helical or twisted cut surface, see Figure 2.3.
  • This cut surface can cause sharp edges of the cut product to pierce the separator sheet and create a short circuit; that coating material breaks off the cut edge and contaminates the surface; that the single sheets or the monocells cannot be properly aligned with one another; and/or that the required stacking accuracy is not achieved. All of the points listed can lead to a reduction in or loss of functionality of the finished battery cell.
  • FIG. 2.4 shows a comparison of a material web 160 conveyed on a cutting drum 110 in a cross-sectional view.
  • a cut on a drum 110 has advantages over a cut in the plane or on a belt conveyor as in FIG. 2.2, among other things because of the simpler transport of the cut electrodes or segments 161 .
  • the cutting angle a becomes larger compared to FIG. 2.2 if the material web is cut on a drum 110 with a fixed laser from the outside and, for example, deflection of the laser beam L via mirrors, as can be seen in FIG. 2.4.
  • the interior 167 of the cutting drum 110 is cut out as shown in Figure 2.5.
  • the exit point 134 i.e. the exit point of the laser beam from an optical laser beam guidance system, or the last deflection point is therefore inside the drum 167, i.e. the space enclosed by the drum jacket.
  • the cutting angle a is significantly reduced compared to cutting from the outside as in Figure 2.4.
  • the laser beam exits from the inside, i.e. starting from the interior 167, through a passage opening 111 in the cutting drum 110 and strikes the outer circumference of the cutting drum
  • Figure 2.5 actually shows two cross sections through the cutting drum 110, namely in the left half a cross section through the starting point 163 and in the right half a cross section through the end point 164.
  • the exit or deflection point 134 lies on the central axis or axis of rotation of the cutting drum 110, ie in a cross section in the drum center point M of the cutting drum 110, see FIG. 2.5.
  • the position of the laser, ie the laser beam generator itself, is not important here; it can be arranged inside or advantageously outside the cutting drum 110 and radiate into the cutting drum 110 axially or axially-parallel, for example.
  • the laser beam is directed from the exit or deflection point 134 in a diagonal, for example via a mirror or a deflection element, over the material to be cut. ending web of material 160 as shown in Figure 2.1.
  • a positioning of the exit or deflection point 134 deviating from the drum axis M is possible if a small cutting angle ⁇ deviating from zero is tolerable.
  • FIGS. 2.6 and 2.7 An advantageous embodiment of a device 112 according to the invention for cutting or perforating a material web 160 is shown in FIGS. 2.6 and 2.7.
  • the device 112 comprises the cutting drum 110 and the laser cutting device 113.
  • the cutting drum 110 here has a plurality of, for example, twenty passage openings 111 which are arranged at equal angular distances and which extend across the width of the cutting drum 110.
  • a pivotable unit 119 is provided, which is mounted pivotably in the cutting drum 110 about its axis of rotation R and has a pivot drive 120 for this purpose.
  • the pivotal movement of the pivotable unit 119 is illustrated with the arrow S.
  • a linear drive unit 117 is provided on the pivotable unit 119 which advantageously pivots along with the pivotable unit 119 and is set up and arranged for the linear displacement of a beam deflection element 116 along or parallel to the axis of rotation R.
  • the beam deflection element 116 is used to deflect the laser beam L onto the material web 160 and is preferably held in a tubular optics holder 121, for example, which is fastened to the linear drive unit 117.
  • the linear displacement of the optics holder 121 or of the beam deflection element 116 is illustrated by the arrow V.
  • the beam deflection element 116 is a mirror element 129 here, which is held at 45° relative to the axis of rotation R in the optics holder 121 .
  • the optics holder 121 has a passage opening 122 through which the laser beam L reflected by the beam deflection element 116 passes radially outwards.
  • the pivotable unit 119 preferably has a corresponding, for example elongated, through-opening 123 through which the laser beam L emerging from the through-opening 122 passes radially outwards in order to pass through the corresponding through-opening 111 of the drum casing 114 (see Figure 2.7) and finally onto the To meet cutting drum 110 facing side of the web 160.
  • the pivotable unit 119 also serves as a suction device 118, with particles produced by the laser cutting being sucked through the through-opening 123 into the pivotable unit 119 and, for example, diverted to an external filter unit. Furthermore, the pivotable unit 119 can have a compressed air device that is set up to generate a transverse flow perpendicular to the laser beam in order to blow away particles generated by the laser cutting.
  • the laser cutting device 113 includes a laser beam generator 124, which can also be referred to as a laser beam source or laser for short.
  • the laser beam generator 124 is arranged in such a way that the laser beam L it generates enters the cutting drum 110 along the axis of rotation R from a front side and passes through the optics holder 121 and any optical elements contained therein until it hits the deflection element 121 and from there is deflected by 90°, so that the laser beam, starting from the axis of rotation R, emerges radially outwards and finally strikes the material web 160 to be cut through the through-openings 122, 123.
  • the beam deflection element 116 is positioned in the area of an end face of the drum, so that the laser beam L intersects the plane of the material web at a side edge 165 of the material web 160 . This corresponds to starting point 163 in Figure 2.1.
  • the linear drive 117 then moves the optics holder 121 or the beam deflection element 116 along the axis of rotation R and thus along the optical axis of the laser beam L incident from the laser 124.
  • the pivotable unit 119 and with it the beam deflection element 116 are pivoted (in the pivoting direction S in Figure 2.7), with the pivoting and the linear displacement of the beam deflection element 116 being coordinated with one another in such a way that the laser beam falls through the cutting gap 111 of the cutting drum 110 at all times, in order to cut the material web short transversely in the transverse direction Q perpendicular to the transport direction T.
  • the pivotable unit 119 is pivoted back in the opposite direction to the transport direction T (in the opposite direction to the pivoting direction S) without linear displacement by the linear drive 117 until the pivotable unit 119 is back in the original rotational position (opposite starting point 169 in Figure 2.1).
  • Beam deflection element 116 is then displaced and pivoted, but beam deflection element 116 is linearly displaced in the opposite direction (opposite to transverse direction Q in FIG. 2.1) until the laser beam has reached the opposite end point 170 in FIG. 2.1. In this way a rectangular segment 161 is finally obtained.
  • the pivotable unit 119 is then pivoted back into the original starting position 163 and the cutting process begins again.
  • the movable beam deflection element 116 is a linearly displaceable and uniaxially pivotable mirror element 129, namely pivotable about the drum axis R.
  • the linear drive 117 thus performs a back and forth movement
  • the pivot drive 120 performs a coordinated pivoting of the beam deflection element 116 back and forth, also depending on the production or transport speed of the material web 160, so that a preferably vertical or transverse cut can be generated through the material web.
  • the coordination of the displacement V and the pivoting S is controlled by an electronic control device 125, which is shown by way of example in FIG. 2.6. It goes without saying that such an electronic control device 125 is also provided in all other embodiments for coordinated displacement and/or rotation or pivoting of the movably mounted parts of the laser cutting device.
  • the digital electronic control device 125 controls the linear drive 117 and the swivel drive 120 and can also be used to control the laser 124 .
  • the digital electronic control device 125 can be part of the machine control of a production machine in which the device 112 is arranged. Since the cut of the laser beam along the material web should take place at a constant speed as far as possible, the pivoting speed of the beam deflection element 116 is selected and adjusted accordingly depending on this.
  • FIG. 2.8 A further embodiment of a device 112 according to the invention is shown in FIG. 2.8.
  • the beam deflection element 116 is a polygon mirror element 130 instead of a simple mirror element 129 .
  • the polygon mirror element 130 has a plurality of sector-shaped mirror surfaces 131 which are each inclined by 45° with respect to the axis R of the drum.
  • the polygon mirror element 130 is mounted in a linearly displaceable manner along an axis 132 .
  • the polygon mirror element 130 is mounted such that it can rotate about the axis 132 .
  • the axis 132 can be configured as a rotatable shaft.
  • Linear drive 117 and rotary drive 120 are only shown schematically in FIG. 2.8.
  • the suction device 118 which can for example be fixed in space, is only shown schematically in FIG. 2.8.
  • the axis 132 is offset parallel to the drum axis R, so that the laser beam incident on the drum axis R falls on one of the mirror surfaces 131, is deflected there by 90° and falls through the passage opening 111 in the drum casing 114 perpendicularly onto the material web 160 to be cut .
  • the exit or deflection point 134 where the laser beam hits the polygon mirror and is deflected for the last time, is therefore on the drum axis R.
  • Each mirror surface 131 corresponds exactly to a section d across the width of the material web 160 (see FIG. 2.1).
  • the polygon mirror element 130 is shifted back and forth along the linear axis 132, with each forward movement and each forward movement corresponding to exactly one cut d across the width of the web of material 160 (see FIG. 2.1).
  • the polygon mirror element 130 is rotated in the direction of rotation D synchronously with the drum.
  • the direction of rotation D of the polygon mirror element 130 and the direction of rotation R of the cutting drum 110 are therefore identical, as are the rotational speeds or angular speeds.
  • the embodiment according to FIG. 2.8 (as well as that according to FIGS. 2.9 and 2.10) has the advantage that the polygon mirror element 130 can be continuously rotated with a constant direction of rotation D and a back and forth pivoting as in FIGS. 2.6 and 2.7 can be avoided.
  • the movable beam deflection element 116 is a linearly displaceable and uniaxially rotatable polygon mirror element 130, namely, rotatable about the axis 132 parallel to the drum axis R.
  • a first beam deflection element 116A is a mirror element 129 that can be linearly displaced along a linear axis 132 by means of a linear drive.
  • a second beam deflection element 116B is a polygon mirror element in the form of a polygon mirror roller 133.
  • the mirror element 129 is displaced along the linear axis 132.
  • the laser beam L reflected by the mirror element 129 strikes the polygon roller, is reflected there again, then passes through the passage opening 111 and finally strikes the material web 160 perpendicularly in order to cut it. Due to the linear displacement of the mirror element 129, the laser beam moves along the polygon roller 133 once per cut in its longitudinal direction. Analogously to FIG.
  • polygon roller 133 is rotated about the axis of rotation D in the direction of rotation in order to compensate for the web feed due to the rotation of the cutting drum 110.
  • Direction of rotation D and angular velocity of polygonal roller 133 are again the same as direction of rotation R and angular velocity of cutting drum 110.
  • Polygonal roller 133 is arranged in such a way that exit or deflection point 134, where the laser beam hits polygonal roller 133 and is deflected there for the last time, is too lies on the axis of rotation R at any point in time or at most deviates minimally from it.
  • FIG. 2.9 makes it clear that the function of the linear displacement of a beam deflection element 116A and the rotation or pivoting of a beam deflection element 116A about an axis of rotation parallel to the drum axis R are not necessarily performed by a single beam deflection element 116 as in FIGS. 2.6 to 2.8. but a separate beam deflection element 116A, 116B for each of these functions can be provided.
  • a linearly displaceable beam deflection element 116, 116A as in FIGS. 2.6 to 2.9 and does not necessarily have to be provided for the invention.
  • a first beam deflection element 116A namely a mirror element 129 that can be pivoted back and forth on one axis in a pivoting direction S, is provided, as well as a second beam deflection element 116B in the form of a polygon mirror roller 133, which is set up and arranged exactly like the polygon mirror roller 133 in Figure 2.9.
  • the scanning of the polygonal roller 133 with the laser beam L in the longitudinal direction is achieved here by pivoting the mirror element 129 about a transverse axis perpendicular to the axis R of the drum.
  • FIG. 2.11 there is also no linearly displaceable beam deflection element 116, 116A as in FIGS. 2.6 to 2.9.
  • a mirror element 135 that can be pivoted about two axes is provided here, which can also be referred to as a 2-axis scanning element.
  • the laser beam L arrives on the drum axis R, impinges on the mirror element 135 at the exit or deflection point 134 on the drum axis R, is deflected there, passes through the passage opening and impinges on the material web 160 to be cut.
  • the swivel drive 120 is set up to swivel the mirror element 135 about the beam axis of the incident laser beam and to swivel the mirror element 135 about a transverse axis perpendicular thereto.
  • a cut across the width of the material web 160 is made by pivoting the mirror element 135 about the transverse axis and at the same time, to compensate for the web feed due to the rotation of the drum axis R, by pivoting about the beam axis.
  • a further embodiment according to FIG. 2.12 makes it clear that the laser beam L does not necessarily have to fall from the inside onto the material web 160 to be cut, but that laser cutting from outside the cutting drum 110 is also possible.
  • the laser 124 is mounted in a linearly displaceable manner on the linear axis 132, which runs parallel to the drum axis T, by means of a linear drive 117. Furthermore, the linear axis 132 and thus the laser 124 can be pivoted about the drum axis R by means of the pivot drive 120 .
  • Laser 124, linear axis 132 and swivel drive 120 are arranged radially outside of drum shell 114.
  • a cut across the width of the material web 160 is made by linearly moving the laser 124 back and forth across the material web 160 along the linear axis 132 and at the same time, to compensate for the web feed through the rotation of the cutting drum 110, by pivoting in the pivoting direction S around the Drum axis R performed.
  • the linear axis 132 or the laser 124 must be pivoted back against the cutting pivoting direction S into the one starting position before the next cut can be made, comparable to that described for FIGS. 2.6 and 2.7.
  • the laser 124 is moved back and forth and panned back and forth.
  • the embodiment according to FIG. 2.12 also makes it clear that the laser cutting device 113 does not necessarily have to have a beam deflection element 116, 116A, 116B.
  • the embodiment according to FIG. 2.13 has the advantage that the polygonal mirror roller 133 can be continuously rotated with a constant direction of rotation D and no back and forth pivoting as in FIG. 2.12 is required.
  • the laser 124 (alternatively a first beam deflection element 116A) is mounted so that it can be displaced linearly along the linear axis 132 by means of the linear drive 117 .
  • a cut across the width of the material web 160 is made laser 124 is moved back and forth linearly across material web 160 along linear axis 132 and at the same time, to compensate for the web feed due to the rotation of cutting drum 110, by rotating polygon roller 133 in direction of rotation D about drum axis R.
  • a suction device 136 for sucking off particles produced by the laser cutting is advantageously arranged outside of the cutting drum 110.
  • Such an additional feature can also be provided in the embodiments in which cutting is carried out from the inside (FIGS. 2.6 to 2.11).
  • the device 112 has a plurality of here two cutting drums 110, 138, preferably connected in series.
  • a corresponding laser cutting device 113, 139 shown only schematically, is provided for each cutting drum 110, 138, which is arranged and set up to emit the corresponding laser beam L, L' from the respective interior of the cutting drum 110, 138 through passage openings 111 (not shown) (see Figure 2.5 ) towards the material web 160 in order to cut it into segments 161.
  • the laser cutting devices 113, 139 can be separate devices and each have their own laser 124 and beam guidance systems.
  • the laser cutting devices 113, 139 can have common elements, for example a laser 124, and at least partially separate beam guidance systems, for example separate deflection elements 116, 116'.
  • the exit or deflection points 134, 134' of the laser cutting devices 113, 139 are preferably each on the axis of rotation R, R' of the respective cutting drum 110, 138.
  • FIG. 2.14A The opposite directions of rotation D, D' of the cutting drums 110, 138 are shown in Fig. 2.14A by means of arrows.
  • Material web 160 is fed to cutting drum 110, and after it wraps around preferably at least 90°, more preferably at least 135° and, for example, 180°, material web 160 or the segments 161 cut from it using laser cutting device 113 or laser beam L are passed to the next Cutting drum 138 passed.
  • the cutting drums 110, 138 are dimensioned to accommodate eight segments 161; other divisions and dimensions for more or fewer than eight segments are of course possible.
  • the material web 160 is delivered with web sections 168a, 168b, ..., each web section 168a, 168b, ... corresponding to a segment 161a, 161b, ... to be cut.
  • the laser beam L of the cutting drum 110 is directed at the transfer point of the material web 160 onto the cutting drum 110, for example.
  • the laser beam L' of the cutting drum 138 is directed, for example, at the transfer point of the material web 160 from the cutting drum 110 to the further cutting drum 138.
  • the cutting process is carried out by linear displacement and simultaneous pivoting of the deflection element 116, shown only in Figure 2.14A for the sake of clarity, as described with reference to Figures 2.6 to 2.9.
  • Figure 2.14B the cut started in Figure 2.14A has ended.
  • the laser beam L can remain in this position, for example (no further displacement and pivoting), until the rotational position of the cutting drums 110, 138 shown in Figure 2.14C is reached, in which the laser beam L passes the next passage opening 111 corresponding to the end of the first path section 168a has reached.
  • the laser beam is pivoted further at a reduced speed, is pivoted back, or performs another suitable movement.
  • the laser beam is brought into the necessary starting position before the start of the cut and its movement is synchronized with the speed of the material web to be cut.
  • FIG. 2.14C the laser cutting of the material web 160 starts again with the laser beam L on the cutting drum 110 by linear displacement and simultaneous pivoting of the deflection element 116, as before.
  • FIG. 2.14D the cut started in FIG. 2.14C has ended, so that the web section 168a is completely cut and a web segment 161a is thus produced.
  • the laser beam L can be switched off again in this position until a rotational position of the cutting drums 110, 138 is reached in which the laser beam L has reached the next passage opening 111 corresponding to the end of the next web section 168b, in order to then cut the web section 168b with a further cut to cut completely and thus to produce another track segment 161b.
  • the first cutting process is cut off and the laser beam L is swiveled back into the starting position shown in FIG. 2.14A by swiveling the beam deflection element 116 .
  • Fig. 2.14G The state after the pivoting movement is completed is shown in Fig. 2.14G.
  • the laser beam L starts cutting the web portion 168j and the laser beam L' completes cutting the web portion 168d. Subsequently, the laser beam L completes the cutting of the web section 168j and continues to cut the web sections 168k and 168i, the laser beam L' continues to cut the web sections 168e, 168f and 168g. After that, the second cutting process is finished and the laser beams L, L' swivel back to the starting position shown in Fig. 2.14A, 2.14G.
  • a plurality of sequential cuts are made on each cutting drum 110, 138 as described.
  • the rotary drive of the laser cutting device stops after each cut and waits for one cycle until the laser cutting device starts cutting again.
  • four (generally m) cuts can be carried out in succession on the cutting drum 110, for example.
  • the swivel unit can swivel back to its starting point.
  • the downstream cutting drum 138 makes the next four (m) cuts, so the cutting drums 110, 138 always work alternately.
  • the laser beams L, L' can be cut and/or swung back synchronously, as in FIGS. 2.14A to 2.14G, or at different times.
  • the working range of the laser beam L, L' is, for example, 90° in each case (cf. FIGS. 2.14A and 2.14F).
  • Other working areas are possible.
  • the working area of the laser beams is greater than 180°, preferably at least 225°, more preferably at least 270°.
  • the laser beams L, L' do not have to be swiveled back, which is time-consuming, but can be designed to run around the full 360°, which contributes to an increased production speed.
  • 2.14F is significantly more than 180° away from the laser starting point (cf. Fig. 2.14A), for example 270°.
  • the swivel is no longer against the direction of rotation of the cutting drum, but with the direction of rotation (forward swivel).
  • the reduced swing can save a lot of time.
  • At least two cutting drums are also required for this, with ten cuts being carried out on one cutting drum, for example, in order to achieve the 270°.
  • two cutting drums 110, 138 are provided.
  • the number of cutting drums is not limited to two; more than two cutting drums, each with a laser cutting device, can also be provided.
  • FIGS. 3.1 and 3.2 show a cutting device according to the invention with a cutting rotation device in the form of a cutting drum 201 driven counterclockwise in the direction of the arrow and a counter-rotation body in the form of a counter-drum 202 driven clockwise in the direction of the arrow.
  • the cutting drum 201 and the counter-drum 202 are arranged such that a gap 206 is present between a lateral surface 212 of the cutting drum 201 and a lateral surface 214 of the counter-drum 202, into which a continuous web 205 of a material to be cut is fed.
  • the continuous web 205 can be formed by a web with a cathode or anode material or with a separator material for energy cells, as is described in the introduction to the description.
  • the endless web 205 can also be formed by a multi-layer composite web made of a separator material and segments of an anode or cathode material placed thereon, wherein the segments of the anode material or cathode material can be cut from an endless web in a preceding step by an identical cutting device.
  • the endless web 205 rests against a contact surface 219 formed by the lateral surface 214 of the counter-drum 202 and is fed into the intermediate space 206 by the rotary motion of the counter-drum 202 .
  • the end loose web 205 can be held on counter-drum 202 solely by web tension or additionally or alternatively by a vacuum device.
  • a radially protruding cutting blade 203 with a cutting edge 209 is arranged on cutting drum 201, with a depression 213 being provided in lateral surface 212 of cutting drum 201 in relation to the direction of rotation upstream of cutting blade 203 in order to form a one-sided free space on cutting blade 203. Due to its radially protruding arrangement, the cutting knife 203 has a free cutting edge 209 on its upstream side, the distance from which to the base body of the cutting drum 201 is increased further by the depression 213 .
  • a counter-knife 204 is provided on counter-drum 202, which is arranged in such a way that its radial outer surface is arranged on an identical radius to lateral surface 214 or contact surface 219.
  • Counter-knife 204 thus forms a continuous line with lateral surface 214 and contact surface 219 , stepless outer surface on which the endless web 205 rests radially on the outside.
  • a depression 210 is provided in the contact surface 219 downstream of the counter-knife 204, so that the counter-knife 204 has a free cutting edge 208 on its downstream side.
  • the counter-knife 204 can be designed as a separate part independent of the counter-drum 202, so that it can be replaced after wear or breakage.
  • the counter-knife 204 can also be formed in one piece with the counter-drum 202 in that the counter-drum 202 is formed into the cutting edge 208 on its outer surface 214 .
  • the cutting edge 208 can also be part of an insert part of the counter-drum, which already has the indentation 210 and can also fulfill additional functions.
  • the counter-knife 204 in addition to the formation of the cutting edge 208, can also have an additional shape in order to fulfill additional functions.
  • a cutting blade 203 and a counter blade 204 are shown on cutting drum 201 and on counter-drum 202, but this does not rule out the possibility of multiple cutting blades 203 and Counter knives 204 are provided. On the contrary, it may even make sense to provide several cutting knives 203 and counter knives 204 distributed evenly over the circumferences of the cutting drum 201 and the counter drum 202 if more favorable cutting conditions can be achieved for cutting segments 207 with a predetermined length. If, for example, segments 207 with a length of 100 mm are to be cut, the counter-knives 204 are then arranged in such a way that they divide the lateral surface 214 of the counter-drum 202 into circumferential sections with a circular arc length of 100 mm each. The number of counter knives 204 is matched to the transport speed of the endless web 205 fed in and the speed of rotation of the counter drum 202 .
  • the cutting drum 201 and the counter-drum 202 are driven to rotate in opposite directions, so that when they pass the intermediate space 206, their lateral surfaces 212 and 214 execute a movement in the same direction, which corresponds to the direction of the endless web 205 supplied on the counter-drum 202.
  • the cutting drum 201 and the counter-drum 202 are each driven to rotate at different peripheral speeds, so that the cutting knife 203 and the counter-knife 204 perform a relative movement to one another when passing the intermediate space 206 . This is preferably achieved in that the cutting drum 201 and the counter-drum 202 are driven at identical speeds, and the cutting circles se of the rotating cutting edges 208 and 209 have different diameters.
  • the cutting drum 201 with the cutting edges 209 of the cutting knives 203 has a larger cutting diameter than the cutting edges 208 of the counter knives 204 of the counter drum 202, so that the circumferential speed of the cutting edges 209 of the cutting knives 203 is greater than the circumferential speed of the cutting edges 208 of the counter knives 204 of the identical speeds and the different diameters of the cutting circles, the cutting edges 208 and 209 meet once in each revolution with a correspondingly synchronized movement and thereby execute the cutting movement of the endless web 205, which will be described in more detail below.
  • the cutting knife 203 is arranged on the cutting drum 201 in such a way that the cutting edge 208 of the counter-knife 204 comes into contact with the cutting edge 209 of the cutting knife 203 in a point-like contact K as it passes through the intermediate space 206 .
  • the cutting edge 209 of the cutting blade 203 of the cutting drum 201 is at a first angle al of unequal zero degrees, preferably at an angle al of 0 to 20 degrees in relation to the cutting edge 208 of the counter blade 204 in a point-like contact K tangential to the Movement of the cutting edge 208 aligned cutting plane I, as can also be seen in Figure 3.17.
  • the cutting edges 208 and 209 yield at least slightly due to the resilient properties of the cutting blade 203 and/or the counter blade 204, the cutting edges 208 and 209 are not in a mathematical point-like contact K with one another. Instead, the punctiform contact K is slightly lengthened by the flexibility of the cutting edges 208 and 209 .
  • the cutting edge 209 of the cutting blade 203 is aligned with the cutting edge 208 of the counter blade 204 in such a way that it runs at a second angle ß of unequal zero degrees in a cutting plane II, which runs through the point contact K and perpendicular to the movement of the cutting edge 208 runs perpendicularly to the section plane I, as can also be seen in FIG. 3.16.
  • the cutting edge 208 of the counter-knife 204 is aligned parallel to the axis of rotation of the counter-drum 202 and perpendicular to the longitudinal direction of the endless web 205 held on the counter-drum 202 and thus also perpendicular to the circumferential movement of the lateral surface 214 of the counter-drum 202 and the feed movement of the endless web 205.
  • the cutting blade 203 with the cutting edge 209 comes to a point-like contact with the cutting edge 208 of the counter blade 204 and thereby cuts through the endless web 205 lying against it 208 of the counter-knife 204 of the counter-drum 202 is moved at a lower circumferential speed than the cutting edge 209 of the cutting knife 203 of the cutting drum 201, the punctiform contact K of the cutting edge 209 of the cutting knife 203 slides on the cutting edge 208 of the counter-knife 204 in the longitudinal direction of the cutting edge 208 of the counter-measuring sers 204 and cuts through the continuous web 205 in a cutting line corresponding to the geometry of the cutting edge 208 of the counter-knife 204 .
  • the counter-knife 204 of the counter-drum 202 is aligned perpendicular to the longitudinal direction of the continuous web 205, so that a segment 207 with a vertical cutting edge is cut off from the continuous web 205 by the cut.
  • the cut is made according to the shearing principle in a continuous cut transverse to the longitudinal extent of the endless web 205, as a result of which a very clean and dimensionally accurate cut edge of the segments 207 can be realized.
  • the inclination of the cutting edge 209 to the cutting edge 208 in the cutting plane I in connection with the relative movement of the cutting edges 208 and 209 to each other realized by the different peripheral speeds causes the lateral sliding of the cutting edge 209 of the cutting knife 203 in the point contact K on the cutting edge 208 of the Counter-knife 204. Due to the inclined position of the cutting edge 209 in the cutting plane II, slipping is also made possible with compensation for the reduction in distance between the cutting edge 208 and the cutting drum 201 caused by the circular movement of the cutting edge 208 of the counter-knife 204.
  • the indentation 210 provided downstream of the counter-knife 204 enables the cutting knife 203 of the cutting drum 201 to dip radially inwards through the imaginary extension of the lateral surface 214 of the counter-drum 202 during the cutting movement downstream to the counter-knife 204 .
  • the circular arc section of the cutting movement corresponds to the angle of rotation of the counter-drum 202, starting from the first cutting contact of the continuous web 205 up to the complete cut of the continuous web 205.
  • Segments 207 are cut here with a cutting edge 208 of counter-knife 204, which is perpendicular to continuous web 205 and parallel to the axis of rotation of counter-drum 202 secondly, the continuous web 205 resting on the lateral surface 214 is not twisted about its longitudinal axis.
  • the cutting edge 208 of the counter-knife 204 at an angle to the axis of rotation of the counter-drum 202 in relation to a plane tangent or perpendicularly intersecting the lateral surface 214, provided the cut requires this, or the cut is thereby further improved.
  • the geometry of the cutting edges 208 and 209 can be seen in FIG. 3.17 in a section along the section plane I in the direction of view from above.
  • the cutting edges 208 and 209 are aligned at a first angle a1 of approximately 2 to 5 degrees to one another and as a result come into contact with one another in the point-like contact K during the subsequent rotary movement.
  • the second angle ⁇ can be seen in FIG. 3.16, which is also approx. 2 to 5 degrees here.
  • the cutting edges 208 and 209 first come into contact with one another on one side in the point-like contact K.
  • the cutting edge 209 of the cutting knife 203 slides off the cutting edge 208 of the counter-knife 204, thereby guiding the cutting movement. ment of the continuous web 205, the changing distance between the cutting edges 208 and 209 being compensated for by the second angle ß.
  • the rotational movements of the cutting drum 201 and the counter-drum 202 are coordinated in such a way that the two cutting edges 208 and 209 come into contact with each other during the rotation according to the above-described course and cut the endless web 205 .
  • Contact is mandatory for the cutting operation, otherwise the shearing motion may be interrupted or not performed properly, which would degrade the cutting quality of the segments 207. So that this contact is not lost, the movement of the cutting drum 201 and the counter-drum 202 in connection with the alignment and arrangement of the sheaths 208 and 209 is designed in such a way that the cutting knife 203 comes to rest on the cutting edge 208 of the counter-knife 204 with an overpressure U, as can be seen in Figure 3.3.
  • the cutting knife 203 thereby exerts pressure on the counter-knife 204 and vice versa.
  • the overpressure U does not lead to the counter-knife 204 penetrating with its cutting edge 208 into the cutting edge 209 of the cutting knife 203, as is shown in FIG. 3.3.
  • the representation is only intended to make the principle of the suppression U clearer. Instead, the cutting knife 203 and/or the counter-knife 204 is pushed away slightly using its springy properties, whereby the punctiform contact K is also somewhat lengthened.
  • 3.4 shows a course of the overprinting U over the angle of rotation ⁇ of the counter-drum 202 for a cutting width of the continuous web of 100 mm;
  • K(8) designates the cutting path, while the contact point K runs across the width of the endless web during cutting.
  • the overpressure U relative to the cutting width of the endless web 205 can be seen.
  • the overpressure U leads to an elastic movement of the cutting knife 203 and the counter-knife 204 and, in extreme cases, can lead to a knife breaking or damage to one of the cutting edges 208 or 209 if the plastic deformation limit is locally exceeded.
  • the cutting edges 208 and 209 or just one of the cutting edges 208 or 209 can be slightly concave, ie curved inwards, with the concave shape ideally corresponding to the negative shape of the measured convex overpressure U.
  • This concave shape of the cutting edges 208 or 209 means that the maximum overpressure U can be reduced and ideally evened out without the contact of the cutting edges 208 and 209 being lost during the cutting process.
  • the forces acting on the cutting edges 208 and 209 can be reduced and the probability of damage to the cutting knife 203 and the counter-knife 204 can thus be reduced. Furthermore, the breaking of the cutting blades 203 and the counter-blades 204 or their cutting edges 208 and 209 can also be avoided by using a resilient material for the cutting blades 203 and counter-blades 204, so that they can yield at least slightly.
  • Figure 3.5 shows an embodiment of the invention in which a recess 210 is arranged on each counter-knife 204 upstream of the rotational movement of counter-drum 202, so that the free cutting edge 208 of counter-knife 204 is arranged on the upstream side of counter-knife 204 is.
  • the cutting knives 203 of the cutting drum 201 are arranged here in such a way that their free cutting edges 209 are arranged downstream of the direction of rotation of the cutting drum 201 .
  • the cutting process takes place here in that the cutting drum 201 with the cutting knives 203 and the cutting edges 209 arranged thereon are moved to a higher circumferential speed.
  • the cutting knife 203 of the cutting drum 201 are resiliently mounted by springs 215, so that the cutting forces acting between the cutting edges 208 and 209 are reduced by the cutting knives 203 being able to perform an evasive movement.
  • stiffer cutting blades 203 can be used without increasing the probability of damage in the form of a blade breaking. Due to the resilient mounting of the cutting knives 203, the overpressure U of the cutting edges 208 and 209 described above can be reduced without them losing their contact.
  • the overpressure U of the cutting edges 208 and 209 can be controlled in such a way that the load on the cutting edges 208 and 209 is reduced and possible knife breakage is avoided.
  • FIG. 3.6 shows an enlarged section of counter-drum 202 and counter-knife 204 of the exemplary embodiment shown in FIGS. 3.1 and 3.2.
  • the depression 210 in the contact surface 219 is shaped in such a way that its base surface 217 has a greater length 221 in the circumferential direction of the counter-drum 202 than the section 220 of the contact surface 219 interrupted radially on the outside by the depression 210 207 from the upper position shown into the depression 210 without touching the side surface of the counter-knife 204 with its free end face 218 or wiping it off. This reduces the likelihood of damage to the segment 207 and allows the segments 207 to be cut gently. Furthermore, contamination of the cut segment with cutting particles can thereby be avoided.
  • counter-knife 204 is additionally provided with an undercut 216 that widens recess 210 into counter-knife 204, through which the free space between the free end face 218 of severed segment 207 and the side surface of counter-knife 204 to avoid contact of the segment 207 can be further enlarged with the counter-knife 204 when entering the depression 210.
  • the counter-drum 202 can be seen in two different embodiments with a transfer drum 222 each having a segment 207 on the counter-drum 202 and a segment 207 taken over from the transfer drum 222.
  • the indentation 210 is arranged upstream of the counter-knife 204 in relation to the rotational movement of the counter-drum 202 in accordance with the exemplary embodiment in Figure 3.5, so that there is an increased distance Al upstream of the counter-knife 204 from the transfer drum 222 for the transfer of the Segments 207 results from the transfer drum.
  • FIG. 3.8 the indentation 210 is arranged upstream of the counter-knife 204 in relation to the rotational movement of the counter-drum 202 in accordance with the exemplary embodiment in Figure 3.5, so that there is an increased distance Al upstream of the counter-knife 204 from the transfer drum 222 for the transfer of the Segments 207 results from the transfer drum.
  • the depression 210 is arranged downstream of the counter-knife 204 in relation to the rotational movement of the counter-drum 202 in accordance with the exemplary embodiment of FIGS. 3.1 and 3.2.
  • the ends of the segments 207 lie against the outer surface of the counter-knife 204 of the counter-drum 202 due to the previous cut of the continuous web 205 and are taken over by the transfer drum 222 starting from this end.
  • the cut in the continuous web 205 between the cutting knife 203 and the counter-knife 204 means that the continuous web 205 is first severed on one side, here the front side, and is therefore briefly free with the section that has already been cut hangs in the air.
  • the cutting blade 203 of the cutting drum 201 or the cutting blade 204 of the counter-drum 202 collides with this freely hanging section in an uncontrolled manner and thereby damages it.
  • a plurality of compressed air openings 211 that can be subjected to negative pressure are provided in the base area 217 of the depression 210, which suck in the already cut section of the continuous web 205 or of the segment 207 so that it rests against the base area 217 and thus actively remove it move away from the cutting zone.
  • the compressed air openings 211 can all be subjected to negative pressure at the same time.
  • the compressed air openings 211 can be subjected to negative pressure in such a way that the compressed air openings 211 are subjected to negative pressure in accordance with the cutting process of the continuous web 205, in that the compressed air opening 211 is first subjected to negative pressure, which is arranged on the edge of the continuous web 205 that was cut through first. and then the further compressed air openings 211 are charged with compressed air in a successive sequence with a time offset.
  • the compressed air openings 211 are thus subjected to compressed air one after the other, starting from an edge, and then to the laterally moving intersection point K, so that only the section of the continuous web 205 or segment 207 that has already been cut off is subjected to negative pressure and sucked onto the base surface 217 of the depression 210 .
  • This can prevent the continuous web 205 from being torn in an uncontrolled manner by the application of negative pressure before it is cut.
  • the compressed air openings 211 provided in the recess 210 can also be used to suck off the cutting dust.
  • the suction device 223 can comprise several or individually provided suction openings at the marked points, which can also be positioned in such a way that the air currents generated by the rotary movements of the cutting drum 201 and the counter-drum 202 support the transport of the cutting dust to the suction openings.
  • the suction devices 223 are moved along with the cutting drum 201 or the counter-drum 202 and are then connected to a stationary suction device 223 via an interface.
  • FIG. 1 A further developed exemplary embodiment can be seen in FIG.
  • the pivoting element 224 is mounted at its end remote from the counter-knife 204 so that it can pivot about a pivot axis aligned parallel to the axis of rotation of the counter-drum 202 and protrudes with its free pivotable end into the recess 210.
  • the pivoting element 224 is in the recess 210 during the cutting process pivoted so that the cutting edges are separated with the advantages described above and the cutting process can be carried out according to the process described above.
  • the pivot element 224 is then only pivoted radially outwards with its free end about a pivot axis directed parallel to the axis of rotation of the counter-drum 202 as the counter-drum 202 rotates further until it reaches the transfer position shown in FIG. 3.14 relative to the counter-drum 202.
  • the distance A1 to be overcome in order to take over the segments 207 from the take-over drum 222 can be reduced with the advantages described above.
  • the same advantage can also be achieved by a pivoting element 224 provided on the transfer drum 222, as can be seen in FIG. 3.15.
  • the cutting edges 208 and 209 of the cutting blade 203 and the counter blade 204 can be heated to a temperature of approximately 600 degrees Celsius by a separate or central heating device, as a result of which the cutting quality can be further improved.
  • an improved thermomechanical cutting of the segments 207 can be realized by a combination of the mechanical cutting by the above-described sliding of the cutting edges 208 and 209 in connection with the heating of the cutting edges.
  • a separating device 301 for cutting and separating segments 306 for energy cells from a supplied endless web 305 are described below with reference to FIGS. 4.1 to 4.17.
  • the pitch-changing body is in the form of a pitch-changing drum 303
  • the cutting body is in the form of a cutting drum
  • the transport body is in the form of a transport drum.
  • FIG. 4.1 shows a separating device 301 with a cutting device 302, a pitch-changing drum 303 and a transfer device 304, to which an endless web 305 of anode material, cathode material or separator material for the production of energy cells or energy storage devices is fed.
  • the energy cells or energy storage devices are used, for example, in land vehicles, ships, aircraft or stationary devices such as photovoltaic systems and are used to store and/or convert electrical energy in the form of battery cells or fuel cells, which is used to operate electrical drive units. This can be motor vehicles with an electric drive, for example.
  • the continuous web 305 is fed to the cutting device 302, which is designed here as a cutting drum with a plurality of counter knives 311 and cutting knives 310 directed towards the circumference of the cutting drum.
  • the continuous web 305 is gripped by the cutting device 302 designed as a cutting drum in a rotary transport movement and fed on to the pitch-changing drum 303 .
  • the continuous web 305 is cut on the cutting device 302 by means of the cutting blades 310 by shearing off the counter-blades 311 into segments 306 with a predetermined length, which correspond to the anodes 93, cathodes 95 or separators 92, 94 in the monocells described at the outset with reference to Figure 1.1 91 or composite elements of anodes 93 with separators 92, 93 cathodes 95 with separators 92, 93 or the mono-cells 91 themselves.
  • the segments 306 lie against the lateral surface of the cutting drum and are held on the lateral surface of the cutting drum, for example by means of negative pressure. Furthermore, the segments 306 are in direct contact with one another, ie without a distance or with only a very small distance and are only separated from one another by the separating cuts. The segments 306 are then transported on the cutting drum by the rotary movement to a takeover point U 1 and taken over by the pitch-changing drum 303 in the takeover point U 1 .
  • a cutting device 302 can also be used, in which the continuous web 305 and/or the segments 306 are cut and fed to the pitch-changing drum 303 in a straight, ie planar, feed movement.
  • the cutting device 302 can also include any curved or deflected feed movement to implement different guide paths of the endless web 305 or the segments 306. The only important thing is that the segments 306 that have already been cut are fed to the transfer point U 1 in direct contact with one another or as closely as possible will.
  • the pitch-changing drum 303 comprises a basic drum body 307 and a plurality of transport segments 308 arranged radially on the outside of the basic drum body 307, as can also be seen in the enlarged representation of FIG. 4.2.
  • the pitch-changing drum 303 is driven by a drive device, not shown, which is in a rotational connection with the drum base body 307, so that it rotates clockwise in the direction of the arrow.
  • a drive device not shown, which is in a rotational connection with the drum base body 307, so that it rotates clockwise in the direction of the arrow.
  • an electric motor can be provided as the drive device, which drives the drum base body 307 directly or via a gear.
  • the transport segments 308 are held on the drum base body 307 so that they can move radially and each have a curved surface on their outside with a radius that is identical in relation to the axis of rotation Dl of the drum base body 307, so that when they are placed against the drum base body 307 they have a circular cross section , Form cylindrical lateral surface of the pitch changing drum 303 with a radius RI.
  • the transport segments 308 On their radial outside, the transport segments 308 have a take-over surface 309 with a length directed in the circumferential direction of the pitch-changing drum 303, which corresponds to the length of the segments 306 cut off from the endless web 305.
  • the transport segments 308 can be provided with compressed air openings in the area of their transfer surfaces 309, which can be subjected to negative pressure in order to transfer and hold the segments 306.
  • a control device which controls the movement of the transport segments 308, which will be explained in more detail below, during the circulation from the takeover point U1 to a transfer point U2.
  • the control device can be a control cam which is stationary with respect to the rotating drum base body 307 and on which the transport segments 308 rest with a control projection (not shown).
  • the movement of the transport segments 308 can also be controlled with actuators by electrical activation.
  • the movement of the transport segments 308 on the drum base body 307 is controlled in such a way that the transport segments 308 are drawn towards the drum base body 307 when passing through the transfer point U1 and in the circumferential direction at a very small distance, preferably directly, abut one another.
  • the radius of the outer surface of the transport segments 308 in the transfer point U 1 corresponds to the radius RI.
  • the precut segments 306 are fed from the cutting device 302 to the transfer point U1 in a direct abutting arrangement or in an arrangement with very small spacings and are taken over by the transport segments 308 of the pitch-changing drum 303 .
  • the rotary movement of the pitch-changing drum 303 and the movement of the transport segments 308 in relation to the feed movement of the cutting device 302 are synchronized in this case in relation to the rotary movement of the cutting drum in such a way that the separating cuts between the segments 306 and the separating points of the transport segments 308 are in the transfer point U 1 ideally coincide, so that in each case one segment 306 is taken over by a transport segment 308.
  • the transport segments 308 are extended radially outwards during the further rotary movement of the pitch-changing drum 303 .
  • the distances A between the transport segments 308 and the segments 306 held thereon are increased.
  • the segments 306 are thereby practically pulled apart and separated.
  • the spaced segments 306 are then taken over in the transfer point U2 on a larger radius R2 with increased distances A by a subsequent take-over device 304 and transported away.
  • the transfer device 304 is formed here as a transport drum, which in turn is driven to rotate in a direction opposite to the direction of rotation of the pitch-changing drum 303 .
  • any desired movement paths can be provided, which can be individually adapted to the geometric specifications of the higher-level system.
  • the continuous web 305 and the segments 306 cut off from it can be seen isolated.
  • the continuous web 305 is fed to the cutting device 302 and cut in the cutting device 302 .
  • the segments 306 in the cutting device 302 are still in direct contact with one another, which is why no distances can be seen here.
  • the distances A between the segments 306 are increased only after the segments 306 have been accepted by the pitch-changing drum 303, until the segments 306 with their increased distances A are accepted by the acceptance device 304.
  • FIG. 4.4 An alternative embodiment of the separating device 301 can be seen in FIG. 4.4, in which the transport segments 308 of the pitch-changing drum 303 are not moved in the radial direction but instead in the circumferential direction of the basic drum body 307.
  • the transport segments 308 are accelerated in the direction of rotation of the drum base body 307 starting from the transfer point U1, whereby the distances A between the transport segments 308 and between the segments 306 held thereon are increased.
  • the segments 306 are thus transferred in the same way as in the exemplary embodiment in FIG increased distances A to the transfer device 304, preferably at a speed that is higher than or equal to the speed in the transfer point U1 in the transfer point U2.
  • Both movements of the transport segments 308 lead to an increase in the distances A between the transport segments 308 themselves and the segments 306 transported on the transport segments 308, as described above.
  • the movement sequences can also be combined if the increase in distance is to be made even greater, for example, or if more favorable conditions can be achieved for the transfer of the segments 306 in the transfer point U2.
  • the advantage of the separating devices 301 described is that the segments 306 are cut in a first step in the cutting device 302 from the continuous web 305, which can be optimized in terms of the cutting process itself.
  • the segments 306 are then already taken over in cut form by the pitch-changing drum 303 in the transfer point U 1 and are each placed precisely on one of the transport segments 308 by a synchronized sequence of movements of the cutting device 302 and the pitch-changing drum 303 . Since the segments 306 are no longer cut on the pitch-changing drum 303, the revolving movement of the transport segments 308 from the takeover point U1 to the transfer point U2 and back again can only be used to increase the distances A by a corresponding movement of the transport segments 308.
  • circumferential angles of 180 degrees and more can be used.
  • an opposite arrangement of the transfer point U1 and the transfer point U2 at an angle of 180 degrees has the advantage that to increase the distances A from the transfer point Ul to the transfer point U2 and the subsequent reduction of the distances A from the transfer point U2 to the transfer point U 1 in each case the same circumferential angle is available, whereby again the maximum relative speeds of the transport segments 308 to the base body 307 of the pitch-changing drum 303 can be reduced to a minimum.
  • two or more separating devices 301 can preferably be provided in a system according to Figure 4.5, which segments 306 in the form of anodes 93, cathodes 95 or also transport the separators 92, 94 and separate them before further processing according to the principle described above.
  • the segments 306 are then cut in parallel arranged separating devices 301 from an endless web 305 and separated by increasing their distances A and then stacked on top of one another by means of a connecting device 370 to form the monocells 91 .
  • the spaced segments 306 can preferably be the anodes 93 or cathodes 95 of the energy cells, which are then placed in their spaced arrangement created by the separating device 301 on an endless web 305 of a separator material to form a composite web.
  • Two separating devices 301 can be provided, with the anodes 93 being separated in a first separating device 301 and the cathodes 95 being separated in a second separating device 301, with their distances being increased.
  • These isolated anodes 93 and cathodes 95 are then each placed on an endless web 305 of a separator material to form two composite webs and laminated with them in a composite process.
  • the monocells 91 are formed by cutting the double composite sheet through the gaps created by the gaps between the anodes 93 and between the cathodes 95 from the double composite sheet.
  • the distances created or increased between the successive anodes 93 and the successive cathodes 95 are of particular importance, since this enables the double composite web to be cut to form the monocells 91 without having to cut through the anodes 93 and/or cathodes 95.
  • two separating devices 301 with a connecting device 370 are provided.
  • An endless web 305 of electrode material is fed to the separating device 301 on the left in the illustration, which is then cut into segments 306 according to the process described above in the separating device 301 372 to be launched.
  • a further continuous web 305 made of a separator material is then placed on the segments 306 transported on the conveyor belt 372, as a result of which the segments 306 are then fixed in their spaced arrangement with the continuous web 305 to form a first formation and are connected to one another by the application of pressure or, preferably, by a bonding process be fixed.
  • the feeding of the continuous web 305 and the feeding of the segments 306 resting on the conveyor belt 372 form a first connecting device 373 of the connecting device 370 of the plant, in which the cut segments 306 are fixed with the continuous web 305 to form a first formation.
  • the first formation then enables further processing of the continuous web 305 with the segments 306 lying against it.
  • the separating device 301 on the right in the illustration as this enables a continuous, endless composite process with a very high production speed.
  • the superordinate composite device 370 has a second composite device 374, in which the first formations of the cut segments 306 or of the endless webs 305 with the segments 306 arranged thereon, removed from the first composite devices 373, are combined to form a second formation in the form of an endless web 305 of monocells 91 are connected to one another, which can then subsequently be cut and spaced in a further separating device 301.
  • the segments 306 would be four-day monocells 91 based on the structure described above.
  • the second connecting device 374 can in particular comprise a thermomechanical connecting unit, in which the layers of the continuous webs 305 with the segments 306 arranged thereon or between them are connected to one another by lamination. But it would also be conceivable that in the second To fix the second formation formed by the collar device 374 simply by applying pressure and to feed it to a downstream machining process.
  • second compound device 374 does not necessarily presuppose the presence of the first compound device 373 . If no first connecting device 373 is present, the segments 306 supplied by the two separating devices 301 would then be fixed in the second connecting device 374 to form the second formation without being fixed beforehand to form a first formation.
  • the term second compound device 374 is used only for conceptual differentiation from the first compound device 373.
  • FIG. 4.6 shows an enlarged section of the system with the separating device 301.
  • the transfer device 304 is designed here as a transport drum that is driven to perform a rotary movement and around which a tensioning belt 375 is wrapped, which in turn also wraps around a tensioning roller 376 .
  • the tensioning roller 376 is positioned in such a way that the tensioning belt 375 runs parallel to the transporting belt 372 in one section, starting from where it wraps around the transport drum, and from there it is guided back to the transporting drum via the tensioning roller 375 .
  • the pitch-changing drum 303 transfers the isolated segments 306 to the tensioning belt 375 of the transport drum, which then takes over the segments 306 during the circulating movement and places them on the transport belt 372 via the section running parallel to the transport belt 372 .
  • the tensioning belt 375 of the transfer device 304 places the segments 306 in their spaced arrangement on a conveyor belt 372, which transports the segments 306 further to a point in which an endless web 305 of the separator material is laid to connect the segments 306 to form a first formation.
  • the tensioning roller 376 deliberately has a very small diameter and preferably a smaller diameter than the transport drum, so that the tensioning belt 375 is deflected in a small radius and the segments 306 are not deflected as well.
  • the tensioning roller 376 is arranged as close as possible to the feed point at which the continuous web 305 is fed, so that the segments 306 arranged on the conveyor belt 372 are covered on the upper side by the continuous web 305 and covered by it as soon as possible after the tensioning belt 375 has run off be fixed.
  • the cut segments 306 are then fixed between the endless web 305 and the conveyor belt 372 .
  • the first connecting device 373 of the connecting device 370 here includes the tensioning belt 375, which includes the transport drum, ie the transfer device 304 and the tensioning roller 376.
  • the first connecting device 373 includes the supply of the continuous web 305, in which the continuous web 305 is placed on the segments 306 to form the first formation.
  • FIG. 4.7 shows an enlarged section of an alternative separating device 301 with a pitch-changing drum 303 and a transfer device 304 formed by a conveyor belt.
  • the pitch-changing drum 303 places the segments 306 in their spaced arrangement on the conveyor belt before the endless web 305 of the separator material is placed on the segments 306 .
  • the first formation formed in this way from the segments 306 and the continuous web 305 is then transported further by the conveyor belt and is pressed together to form a composite by a second conveyor belt 371 which comes to rest on the upper side.
  • the first connecting device 373 is realized here in that the pitch-changing drum 303 places the segments 306 directly on the conveyor belt, i.e.
  • a deflection roller 377 is additionally provided in the first connecting device 373, which is positioned as close as possible to the transfer point U2 and on which the endless web 305 is deflected and placed on the segments 306. is laid.
  • the distance from the deflection roller 377 to the transfer point U2 in the direction of movement of the conveyor belt is smaller than the length of the cut segments 306 in the direction of movement of the conveyor belt, so that in every phase of movement they are either over the transport segments 308 of the pitch-changing drum 303 or through the endless track 305 and in a short overlap phase are fixed both by the transport segments 308 and by the endless track 305.
  • the first formations are formed from the continuous webs 305 and the adjoining segments 306, and the second formation is formed from the two continuous webs 305 with the segments arranged in between and lying on one side 306 transported via a conveyor belt 372.
  • the endless webs 305 have not yet been cut, so that the first formations and the second formations in turn form endless webs.
  • a very high production speed can be achieved for the monocells 91 subsequently cut from the second formation.
  • FIG. 5.1 shows a cell stacking system 401 according to the invention with a first feed device 402, a discharge device 403, an upstream cutting device 404 and a cell stacking device 407 arranged between the feed device 402 and the discharge device 403.
  • the cell stacking system 401 is supplied with a continuous web (not shown) made of two continuous webs of a separator material with anode sheets arranged in between and spaced apart in the longitudinal direction of the continuous web and cathode sheets lying on one side of one of the continuous webs of separator material and also spaced apart in the longitudinal direction of the continuous web.
  • the continuous web can also be formed from just one continuous web of a separator material with or without adjacent electrode sheets. If the continuous web has electrode sheets spaced apart, the cut in the cutting device 404 is made through the separation points between the electrode sheets.
  • the cutting device 404 is formed here by a pair of drums consisting of a cutting drum with cutting knives and a counter-drum with counter-knives and cuts the continuous web guided onto the cutting drum or the counter-drum by shearing the cutting knives on the counter-knives into segments 416 of a predetermined length, which are defined by the distances between the Cutting knife or the counter-knife is defined, depending on whether the endless web is guided onto the cutting drum or the counter-drum.
  • the cut segments 416 are fed to the feed device 402.
  • the feed device 402 comprises a plurality of transport drums, on which the segments 416 are held, for example by vacuum, until they are finally transferred to a first transfer body in the form of a first transfer drum 405 of the feed device 402. If the continuous web supplied is a four-layer web, the segments 416 cut from it correspond to the monocells described at the outset.
  • the cell stacking device 407 comprises four removal devices 411 in the form of removal plungers driven to rotate. Two of the removal devices 411 are assigned to the first transfer drum 405 and remove segments 416 from the first transfer drum 405 during their revolving movement and then transfer them to a magazine rotary body, which will be explained in more detail below, in the form of a magazine drum 410.
  • the revolving movement of the removal punch is controlled in such a way that they take over the segments 416 from the first transfer drum 405 in a predetermined sequence.
  • four removal devices 411 are provided, so that each of the removal devices 411 takes over the segments 416 from the first feed device 40 in a fixed sequence in a four-person rhythm.
  • the removal devices 411 assigned to the first transfer drum 405 thus take over two segments 416 of the circumference of the first transfer drum 405 during one revolution segments 416 held by the first transfer drum 405.
  • the segments 416 remaining on the first transfer drum 405 are then taken over by a deflection body in the form of a deflection drum 423 and transferred to a second transfer body in the form of a second transfer drum 421 .
  • the orientation of the segments 416 in relation to their surfaces is reversed twice when they are accepted from the tail drum 423 and transferred from the tail drum 423 to the second transfer drum 421, so that the segments 416 are then in an identical orientation on the second transfer drum 421 are arranged as on the first transfer drum 405.
  • Two removal devices 411 in the form of rotating removal stamps are also provided on the second transfer drum 421, which take over the remaining half of the segments 416 from the second transfer drum 421 and feed them to a magazine drum 410 according to the same principle.
  • a testing device (not shown) is provided, which detects defective segments 416 .
  • the defective segments 416 are then not removed from the two transfer drums 405, 421 by the removal devices 411 and are instead discharged via an ejection drum 424 into a reject reservoir 425.
  • Half the number of segments 416 are thus removed from the first transfer drum 405 by the first two removal devices 411, while the segments remaining on the first transfer drum 405 are transferred from the deflection drum 423 to the second transfer drum 421 with a double reversal and from there via the last two removal devices 411 are removed.
  • the segments 416 are thus fed in by the feed device 402 in a continuous inflow and removed by it in a sequential transfer to a parallel stacking in the cell stacking device 407 .
  • the segments 416 are delivered by the four removal devices 411 into four magazine drums 410 of the cell stacking device 407 arranged in parallel, in which the segments 416 are placed on top of one another to form stacks 415 and are delivered further to the removal device 403 .
  • the cell stacking device 407 comprises four cell stacking devices 408, the core components of which each form a removal device 411, a magazine drum 410 and a delivery device 412, with a cell stacking device 408 being shown enlarged in FIG. 5.3.
  • the removal device 411 of a cell stacking device 408 is formed by a removal plunger driven to perform a rotary movement, which removes a segment 416 from one of the two transfer drums 405 or 421 during each circulation movement and moves it to a transfer point ul of the magazine drum 410.
  • the Magazine drum 410 has four magazines 413 arranged on its outer circumference, which are open to the outside.
  • a stripping device in the form of a comb-like stripping part 427 with a plurality of stripping webs arranged parallel to one another, which is stationary opposite the magazine drum 410 and is firmly positioned in relation to the takeover point u1.
  • the removal plunger also has slots 429, parallel to one another and in the circumferential direction of the rotary movement of the removal plunger, into which the stripping part 427 engages with its stripping webs during the rotary movement of the removal plunger, as a result of which the segment 416 held on the outside of the removal plunger during the rotary movement of the removal plunger into the magazine 413 arranged in the takeover point ul. Since the transfer point ul is arranged on the top of the magazine drum 410 in the present exemplary embodiment and the segments 416 are inserted into the magazine 413 from above, the insertion movement of the segments 416 into the magazine 413 is additionally supported in this case by the acting gravity.
  • the magazine 413 has comb-like side walls with engagement openings 417 aligned in the circumferential direction and a holding device 414 in the form of a plurality of engagement fingers which can be pivoted by means of a pivoting mechanism.
  • the movement of the holding device 414, i.e. the pivotable engagement fingers, is controlled by a mechanical or electronic control device in such a way that the engagement fingers of the holding device 414 in the transfer point ul do not reach through the engagement openings 417 and thus release the opening of the magazine 413 to the outside.
  • the opening of the magazine 413 in the takeover point ul is thus freely accessible and the segments 416 can be stacked therein to form a stack 415 at a specific height by means of a repetitive circular movement of the removal plunger.
  • the magazine drum 410 When the predetermined height of the stack 415 in the magazine 413 is reached, the magazine drum 410 is rotated through 90 degrees and the next magazine 413 is moved to the transfer point ul to repeat the stacking process. At the same time, when the rotary movement of the magazine drum 410 begins, the holding device 414 is moved by the control device in such a way that its gripping fingers reach through the gripping openings 417 in the side walls of the magazine 413 and come to rest on the upper side of the stack 415. The holding device 414 then secures the stack 415 against accidentally escaping from the magazine 413.
  • the magazine 413 filled with the stack 415 reaches the lower transfer point u2 in the illustration as a result of the subsequent cycle of the rotary movement of the magazine drum 410 .
  • a stationary delivery device 412 is provided at the transfer point u2 in the form of a plurality of webs aligned parallel to one another and aligned with the engagement openings 417, which engage in the engagement openings 4i7 at the level of the bottom of the magazine 413 during the rotary movement of the magazine drum 410 and thereby Comb stack 415 out of magazine 413. Since the stacks 415 are discharged downwards from the magazine 413, the discharge movement is again assisted by gravity. In order to execute the stack 415, the holding device 414 was released in a previous step.
  • the delivery device 412 is formed here by a structure of fixed webs which combs the stacks 415 out of the magazines 413 . If such an active combing out is not required, it is also sufficient if the dispensing device 412 merely actuates the holding device 414, and the Stack 415 fall out of the magazines 413 solely by gravity. In this case, the delivery device 412 would be a passive delivery device 412 which, although it triggers the removal of the stack 415 itself, does not actively support it.
  • the removal device 403 that can be seen in FIG. 5.1 comprises an endless conveyor device 420, such as, for example, an endless belt, an endless chain, an endless belt or the like.
  • the endless conveyor device 420 is equipped with a large number of workpiece carriers 406 which have a receptacle 422 shaped in accordance with the shape of the stack 415 .
  • the workpiece carriers 406 are aligned and held on the endless conveyor 420 in such a way that they are arranged in the transfer point u2 under the magazine 413 such that the stack 415 is removed from the magazine 413 into the receptacle 422 of the workpiece carrier.
  • the removal device 403 Since the workpiece carriers 406 of the removal device 403 are loaded simultaneously with the stacks 415 of the segments 416 by the four cell stacking devices 407, only every fourth workpiece carrier 406 of each of the magazine drums 410 is loaded with one stack 415 in each cycle.
  • the removal device 403 thus also performs a clocked feed movement, during which the workpiece carriers 406 are transported either from one cell stacking device 408 to the next or in jumps over a number of cell stacking devices 408.
  • a second feeding device 418 with a second cutting device and a second removal device 419 is also provided.
  • the second feed device 418 is also supplied with an endless web either in one layer made of a separator material or in multiple layers, e.g. three layers with several webs of a separator material and electrode sheets arranged in between, with no electrode sheets being provided on the outside of this endless web.
  • This continuous web is cut in the second cutting device 409 according to the same principle as the first cutting device 404 into segments 416 (in this case these are the closing cells described above) of a predetermined length, which are then transferred to a transfer drum 430, from which the segments 416 of removed from the second removal device 419 and placed in the receptacles 422 of the workpiece carrier 406 before the stacks 415 are introduced from the magazine drums 410 into the receptacles 422.
  • the stacks 415 inserted by the magazine drums 410 have a free electrode sheet on one of their surfaces. This free electrode sheet is now covered by the segment 416, the final cell, inserted via the second removal device 419. Since the segment 416 inserted by the second removal device 419 deliberately has no free electrode sheet and instead has a separator material on both surfaces, the stack 415 of the segments 416 finally removed by the removal device 403 also has a separator material on both sides.
  • the second removal device 419 places the segments 416 in the receptacles 422 of the workpiece carrier 406 before the stacks 415 are introduced. However, it is also conceivable for the second removal device 419 to place the segments 416 onto the stacks 415 from above after the stacks 415 have been inserted into the receptacles 422 .
  • a corresponding testing device is also provided in the second feed device 418, by means of which defective segments 416 are identified and removed into a second scrap reservoir 426.
  • Segment Machining Advantageous embodiments of a processing device for processing segments 501 of energy cells according to the sixth aspect of the invention are described below with reference to FIGS. 6.1 to 6.9.
  • a segment 501 can be seen in the form of an electrode which has electrical contacts 504 which are led outwards and have already been stamped into a predetermined shape.
  • two conductor lugs 502 and several adhesive strips 503 can be seen, which are attached to segment 501 in the processing device described below.
  • the segment 501 can be seen after it has passed through the processing device with the conductor lugs 502 and adhesive strips 503 arranged on it.
  • a processing device with a feed device 506, a fixing device 507 and various processing stations can be seen in FIG. 6.2.
  • the feeding device 506 comprises a multiplicity of workpiece carriers 505, in which the segments 501 to be machined are accommodated.
  • the workpiece carriers 505 are fed to the feed device 506 via an endless drive device 512, which can be formed, for example, by an endless belt, one or more endless belts or also endless chains.
  • the feeding device has a drive device, not shown, such as an electric motor, which drives the endless drive device 512 to rotate.
  • the fixing device 507 also includes an endless drive device 513 in the form of an endless belt, an endless band or an endless chain or a combination of several of these elements and a drive device, not shown, which drives the endless drive device 513 to rotate.
  • a large number of fixing elements 508 in the form of fixing stamps are provided on the endless drive device 513 .
  • control attachments 514 are provided, which are directly or indirectly coupled in terms of movement to the fixing elements 508 and run on a control device 515 in the form of a fixed control contour while the fixing elements 508 rotate.
  • the feeding device 506 can be seen enlarged, which feeds the workpiece carrier 505 with the segments 501 arranged therein.
  • the workpiece carriers 505 each have a receptacle 519 which in this case is open upwards on one side and into which the segments 501 are inserted in a preceding step.
  • the receptacles 519 are shaped in such a way that the segments 501 are secured therein against unintentional displacement in all lateral directions as far as possible.
  • additional holding elements or projections can be provided, which pre-fix the segments 501 in the receptacles 519 .
  • the drive devices of the feed device 506 and the fixing device 507 are synchronized with one another and drive the workpiece carrier 505 and the fixing element 508 in such a way that during the feed movement of the workpiece carrier 505, one fixing element 508 moves into the receptacle 519 of a workpiece carrier 505 and thereby exerts a pressure force the free surface of the segment 501 arranged in the receptacle 519 comes into contact.
  • each of the fixing elements 508 has a contact surface that is smaller than the opening of the receptacle 519 and smaller than the free surface of the segment 501 arranged in the receptacle 519 .
  • the segment 501 is then fixed by the attachment of the fixing element 508 in the receptacle 519 of the workpiece carrier 505.
  • the fixing elements 508 perform a revolving movement via the drive of the endless drive device 513, which is superimposed with a radial movement of the fixing elements 508 due to the shape of the control cam of the control device 515 and the control projections 514 running thereon.
  • This radial movement of the fixing elements 508 is designed such that the fixing elements 508 extend radially to fix the segments 501 and then remain in this position until the fixation of the segments 501 is to be canceled again after the segments 501 have passed through the processing stations.
  • the fixing elements 508 rest against the segments 501 when the workpiece carriers 505 pass through the processing stations and fix them in a defined position intended for processing. It is of particular advantage here that the segments 501 are first fixed in their position by the fixing elements 508 and are then processed in the processing stations in this fixed position without the fixing in between being canceled. The segments 501 are first fixed in one position by the fixing elements 508 and then processed in the first processing station. In the present case, this is a tape device 509, which can also be seen in FIG. 6.7, in which the segments 501 are provided with adhesive strips 503. The adhesive strips 503 further fix the segments 501 already fixed by the fixing elements 508 .
  • the segments 501 are additionally fixed to one another in this case by the adhesive strips 503.
  • the next processing station is a stamping device 510, which can also be seen in FIG. 6.8, in which the electrical contacts 504 are formed by a stamping process according to a predetermined shape. Since the segments 501 are fixed during the stamping and the further processing by the fixing elements 508, the electrical contacts 504 also have a defined shape in relation to the processing device and in particular in relation to the further processing stations. Furthermore, the segments 501 are exposed to a mechanical load during the punching process. So that the segments 501 do not slip during the action of the mechanical load and maintain their fixed position, they are fixed via the fixing elements 508 . The fixing elements 508 thus also serve to absorb reaction forces during the mechanical processing of the segments 501.
  • the next processing station is a welding device 511, which can also be seen in FIG. 6.9.
  • Conductor lugs 502 are welded to the electrical contacts 504 in the welding device 511 .
  • the segments 501 are fixed unchanged by the fixing elements 508 and that the electrical contacts 504 were formed in the same orientation of the segments 501 in the receptacle 519 of the workpiece carrier 505.
  • the conductor lugs 502 can thus be welded to the electrical contacts 504 in exactly this position of the segments 501 with a very high positional accuracy.
  • the next processing station is again a tape device 509, in which further adhesive strips 503 are specifically glued around the conductor lugs 502 welded to the electrical contacts 504.
  • the tape device 509 comprises a plurality of adhesive strips 503 wound into a roll 518, which after unwinding are deflected in a predetermined direction via a deflection in each case and are driven via eccentric rollers 516 for the wrapping movement around the segments 501 and the conductor lugs 502.
  • the processing device has two processing stations with an identical function in an adjacent arrangement, so that two consecutive workpiece carriers 505 with segments 501 arranged therein for processing the segments 501 are arranged in processing stations with an identical function .
  • the processing capacity of the processing device can be increased and, in particular, doubled.
  • the workpiece carriers 505 with the segments 501 arranged therein are moved through the processing device via the endless drive device 512 of the feed device 506 in a clocked feed movement, with the workpiece carriers 505 always skipping a processing station in the movement of a cycle due to the double arrangement of the processing stations.
  • the workpiece carriers 505 and/or the fixing elements 508 can be driven individually in addition to or as an alternative to the drives via the endless drive devices 512 and 513 via drive devices that are independent of one another.
  • the processing device has been described on the basis of an embodiment with stationary processing stations and workpiece carriers 505 traveling through the processing stations and fixing elements 508 moving with them. However, it is also readily possible to move the machining stations along with the workpiece carriers 505, at least over a short distance. It is only important that the segments 501 are fixed during the machining processes via the fixing elements 508 so that firstly they do not slip during the machining processes and secondly that they are fixed in the same position in the workpiece carriers during the machining in the various machining stations, so that the machining of the segments 501 always takes place in the same position of the segment in the receptacle 519 of the workpiece carrier 505.
  • the fixing elements 508 are designed here as fixing stamps and fix the segments 501 by exerting a compressive force on the segments 501 arranged in the receptacles 519 of the workpiece carrier 505 and thereby pressing the segments 501 into the receptacle 519 of the workpiece carrier.
  • a shearing stress is exerted on the segments 501 in the stamping points, which is converted into a tensile stress in the segments 501. So that the segments 501 do not slip laterally under these acting tensile forces, they are additionally fixed in their position via the fixing elements 508 .
  • This pure pressing force of the fixing element 508 can also be supplemented or replaced by a form-fit fixing of the segments 501 via the fixing elements 508, in that these grip the segments 501, e.g. like a clamp.
  • the closed orbit on which the transport element 602 can be moved is a circular path.
  • Figure 7.1 shows a machine 601 for manufacturing a unit 610 of the energy cell manufacturing industry.
  • the unit 610 comprises a cell stack 604 and a pouch film 603 enclosing the cell stack.
  • the cell stack 604 comprises a stack of segments. These segments are each alternating anode sheets and cathode sheets, also referred to as electrodes, separated from one another by separator sheets, also made as segments.
  • the machine 601 in Figure 7.1 comprises a feed device 607, a rotation device 605, a delivery device 611 and a processing device 609.
  • the pouch film 603 together with the cell stack 604 is transferred in a feed section 608 to a transport element 602 of the rotation device 605 by means of the feed device 607 .
  • the feed device 607 in turn comprises a first and a second feed part 607a and 607b.
  • the first feed part 607a is set up to convey the pouch film 603 to a wrapping device 625, while the second feed part 607b is used to convey the cell stack 604 in the direction of the wrapping device 625.
  • the pouch film 603 and the cell stack 604 are thus fed to the wrapping device 625 by means of the first and second feed parts 607a and 607b.
  • the wrapping device 625 includes a first gripping element 626, with which the pouch film 603 can be pulled into the wrapping device 625, and a tensioning device 638, with which the pouch film 603 can be held in a tensioned position.
  • the pouch film 603 wound up on a spindle in this first embodiment can be cut into predefined sheets by means of a cutting device 620 as part of the first feed part 607a. The cutting process is preferably completed when the pouch film 603 is prestressed in the wrapping device 625.
  • a corresponding cell stack 604 is moved in the direction of the pouch film 603 by means of a conveying element 21 of the second feed part 607b.
  • the cell stack 604 is moved against the pouch film 603 by means of a second gripping element 623 of the feed device 607 , so that the pouch film 603 wraps around the cell stack 604 .
  • the cell stack 604 can already be transferred to the transport element 602 in a state wrapped by the pouch film 603 .
  • the cell stack 604 and the pouch film 603 thus already form a common unit 610 in the feed device 607, which is clearly shown in Figure 7.1 by the arrow 639, representing the material flow of the cell stack 604, and the arrow 618, representing the material flow of the pouch film 603 .
  • the actual transfer of the unit 610 consisting of pouch film 603 and cell stack 604 also takes place by means of the discontinuously operating second gripping element 623.
  • the rotation device 605 comprises a plurality of the transport elements 602 each comprising two jaws 617 for holding the unit 610 .
  • the jaws 617 are mounted such that they can be tilted relative to the rotation device 605, so that the clamping force acting on the unit 610 can be adjusted.
  • the pouch film 603 can be reliably held in position relative to the cell stack 604, so that the cell stack 604 is still wrapped in the pouch film 603.
  • the rotation device 605 is mounted such that it can rotate about its axis of rotation 606, so that the transport element 602 can be moved on a circular path by rotating the rotation device 605. On this circular path, the transport element 602 is then, starting from the feed section 608, via the processing device 609 to the discharge device 611 transported.
  • the axis of rotation 606 of the rotation device 605 is aligned horizontally in this exemplary embodiment.
  • a processing device 609 in the form of a sealing device is shown as an example.
  • the sealing device is set up to provide a sealing seam on overlapping surfaces of the pouch film 603 around the cell stack 604, so that the cell stack 604 is closed by the pouch film 603.
  • the sealing device comprises a base 612 with sealing jaws 613 pivoted relative to the base 612 so that the sealing jaws 613 can be pivoted onto the unit 610 .
  • the sealing jaws 613 have a thermocouple so that the required temperature for producing the sealing seam can be reached.
  • the sealing jaws 613 are set up to provide the pouch film 603 with a sealing seam on three sides, since the wrapping in the feed device 607 only requires a three-sided seal; a sealed seam is not required at the folded edge.
  • the transport element 602 After processing by the processing device 609, the transport element 602 is moved further on the circular path about the axis of rotation 606 to the delivery device 611.
  • the dispensing device 611 comprises a discontinuously operating third gripping element 624 and a continuously operating conveying element 622.
  • the sealed unit 610 can be removed from the transport element 602 by means of the third gripping element 624 and transferred to the conveying element 622.
  • the rotation device 605 does not rotate continuously but in a cycled manner so that it can be stopped for transferring the pouch film 603 and the cell stack 604 into and out of the transport element 602 .
  • FIG. 7.2 shows the first embodiment of the machine 601 from FIG. 7.1 in a first process step, in which the wrapping device 625 is filled with the pouch film 603.
  • the first gripping element 626 has drawn in the pouch film 603 .
  • it is additionally held by a tensioning device 638.
  • the pouch film 603 is thus pretensioned between the first gripping element 626 and the tensioning device 638 .
  • the pouch film 603 can then be shortened by the cutting element 620 to form a sheet of predefined size.
  • Figure 7.3 shows the first partial step of the insertion process of the unit 610 made of pouch film 603 and cell stack 604 in the transport element 2.
  • the cell stack 604 is moved against the cut pouch film 603 by means of the second gripping element 623, so that the pouch film 603 is placed around the cell stack 604 .
  • the wrapping device 625 comprises a pair of roller bodies 614, through which the cell stack 604 with the enclosing pouch film 603 is guided.
  • the rolling body pair 614 can be actively driven or passively mounted.
  • the first gripping element 626 can be used to pull the pouch film 603 back into the wrapping device 625.
  • the loose end of the unwound pouch film 603 that is produced after cutting is held by the tensioning element 638 so that it can be gripped by the gripping element 626 .
  • a unit 610 has already been transferred to one of the transport elements 602 in the feed section 608; this unit 610 is in the intermediate position between the feeding section 608 and the processing device 609. In this way, processing steps can be parallelized and the manufacturing process can be designed particularly efficiently.
  • FIG. 7.4 shows the second partial step of the process of inserting the unit 610 made of pouch film 603 and cell stack 604 into the transport element 602.
  • the second gripping element 623 is moved in the direction of the transport element 602 until the unit 610 can be transferred to it.
  • the jaws 617 of the transport unit 602 are then closed so that they can reliably hold the unit 610 in place.
  • the second gripping element 623 can be moved back into the starting position in the direction of an arrow 615 , with the unit 610 remaining in the transport element 602 .
  • the unit 610 held in the transport element 602 in this way is then transported on a circular path in the direction of the processing device 609, in that the rotation device 605 is rotated one cycle further.
  • FIG. 7.5 shows the first embodiment of the machine 601 in the process step of sealing using the processing device 609.
  • the sealing jaws 613 of the sealing device are pivoted relative to the base 612 in such a way that they enclose the jaws 617 of the transport element 602.
  • the pouch film 603 can be closed with a three-sided sealing seam.
  • the sealing jaws 613 are opened again, so that the rotation device 605 can be rotated further in the direction of an arrow 616 in order to convey the transport element 602 on the circular path to the delivery device 611.
  • Figure 7.6 shows the first embodiment of the machine 601 in the process step of transferring the unit 610 from the transport element 602 to the delivery device 611.
  • the rotation device 605 is first rotated in such a way that the transport element 602 can be reached by the third gripping element 624.
  • the jaws 617 of the transport element 602 are then opened, so that the third gripping element 624 can pull the sealed unit 610 out of the transport element 602 in a linear movement.
  • the sealed unit 610 is transferred to the conveying element 622 by means of the third gripping element 624 .
  • the rotation device 605 continues to rotate in the direction of the arrow 616 so that the empty transport element 602 can be filled again in the feed section 608 .
  • FIG. 7.7 shows a machine 601 according to a second embodiment, in which the pouch film 603 and the cell stack 604 are fed separately within the feed section 608 .
  • the feed section 608 is thus divided into a first partial area, in which the pouch film 603 is transferred to the transport element 602 by means of the first feed part 607a, and a second partial area, in which the cell stack 604 is transferred to the transport element 602 by means of the second feed part 607b.
  • the transport element 602 is rotated by rotating the rotation unit direction 605 after the transfer of the pouch film 603 to the transport element 602 from the first partial area to the second partial area, where the cell stack 604 is transferred to the transport element 602.
  • the first feed part 607a comprises a wrapping device 625, with which the pouch film 603 can be transferred to the transport element 602 in the wrapped state.
  • the wrapping device 625 can pre-tension the pouch film 603 over a surface area by means of the first gripping element 626 and the tensioning device 638 .
  • the cutting device 620 is then used to cut the pouch film 603 to a predefined size. Accordingly, the pouch film 603 can be unrolled from a spindle without having to be pre-cut.
  • An insert 633 then moves against the pouch film 603 in such a way that the pouch film 603 is taken along and wraps itself around the insert 633 . The insert 633 is moved in the direction of the transport element 602 until the wrapped pouch film 603 can be transferred to the transport element 602 .
  • the second feed part 607b For transferring the cell stack 604 in the first partial area of the feed section 608, the second feed part 607b comprises - as in the first exemplary embodiment - a conveying element 621 and the gripping element 623, with the actual transfer of the cell stack 604 to the transport element 602 being effected by the gripping element 623. In this way, the cell stack 604 can be pushed reliably between the folded sides of the pouch film 603 already positioned in the transport element 602 .
  • FIG. 7.8 shows a third embodiment of the machine 1, which differs only slightly from the embodiment shown in FIG. 7.7.
  • the pouch film 603 is provided by means of a pouch film stack 629, so that a cutting device 620 (cf. FIG. 7.7) can be omitted.
  • the already pre-cut sheets of pouch film 603 are lifted from the pouch film stack 629 by means of a first gripping element 626 and transferred to the wrapping device 625, via which the pouch film 603 is inserted into the transport element 602, as shown in FIG. 7.7.
  • FIG. 7.9 shows a fourth embodiment of a machine 1, which differs from the previous embodiments essentially in the structure of the rotation device 605.
  • the rotation device 605 is formed by a first and a second rotation plate 619a and 619b, so that a double plate is formed.
  • the rotary disks 619a and 619b are mounted such that they can rotate about the axis of rotation 606, and their axial spacing can be adjusted.
  • Jaws 617 which each form a transport element 602, are arranged in pairs on the mutually facing sides of the rotary plates 619a and 619b. Due to the axial adjustability of the rotation plates 619a and 619b, the axial distance between the jaws 617 and thus the clamping force exerted by them can also be adjusted accordingly.
  • the pouch film 603 and the cell stack 604 are transferred separately to the transport element 602.
  • the first feed part 607a comprises a transfer device 627, the design and functioning of which will be explained in more detail below with reference to FIGS. 7.10 and 7.11.
  • the transport element 602 is moved on to the second feed part 607b, where the cell stack 604 is pushed between the two sheets of pouch film 603, so that a unit 610 comprising the cell stack 604 and the pouch foil 603 is arranged in the transport element 602 .
  • the unit 610 is then moved through a processing device 609 in the form of a sealing device to a delivery device 611 by rotating the rotary device 605 .
  • the axis of rotation 606 of the rotation device 605 is aligned vertically in this exemplary embodiment.
  • the sealing device in FIG. 7.9 comprises two sealing jaws 613 which can be pivoted relative to the base 612 for the sealing process. Since the pouch film 603 is not transferred to the transport element 602 in a wrapped form in this exemplary embodiment, the sealing device must be set up to seal the pouch film 603 on four sides around the cell stack 604 .
  • FIG. 7.10 shows the transfer device 627 from FIG. 7.9 in detail in a first state, in which the uppermost layer of the pouch film 603 is picked up from the pouch film stack 629 by a holding means 628.
  • the holding means 628 is set up to hold a sheet of pouch film 603, which can be achieved, for example, by creating a negative pressure.
  • the holding means 628 is rotated through 180° about a second rotation axis 631, so that another holding means 628 can pick up another layer of the pouch film stack 629. In this way, two identical sheets of pouch film 603 can be accommodated.
  • FIG. 7.11 shows that the two sheets of pouch film 603 picked up in this way are transferred to the transport element 602 by rotating the holding means 628 about a first axis of rotation 630 by 180°.
  • the jaws 617 of the transport element 602 are also set up to hold the pouch film 603, for example by generating a negative pressure on the surface of the jaws 617.
  • the first axis of rotation 630 is aligned orthogonally to the second axis of rotation 631.
  • the first axis of rotation 630 is aligned parallel to the axis of rotation 606 of the rotation device 605, that is to say vertically. Accordingly, the second axis of rotation 631 is aligned horizontally.
  • FIG 7.12 shows the machine 601 according to a fourth embodiment during the feeding of the cell stack 604.
  • the rotation of the rotation device 605 moves the transport element 602 filled with pouch film 603 from the first partial area into the second partial area of the feed section 608, see Figure 7.9.
  • the cell stack 604 is transferred between the sheets of pouch film 603 held by the jaws 617 by means of the second feed part 607b comprising the conveying element 621 and the gripping element 623.
  • the double plate i. the axial distance between the rotation plates 619a and 619b is reduced, so that the jaws 617 press against the unit 610 made of pouch film 603 and cell stack 604.
  • the unit 610 can be moved reliably on the circular path by the rotation unit 605 without the position and/or alignment of the pouch film 603 relative to the cell stack 604 changing unintentionally.
  • FIG. 7.13 shows the machine 601 according to a fourth embodiment when the pouch film 603 is sealed by means of a processing device 609 in the form of a sealing device.
  • the processing device 609 is reached by the transport element 602 when it is rotated through 90° in the direction of the arrow 616, starting from the transfer point of the second feed part 607b.
  • the processing device 609 comprises a base 612 on which the sealing bar corners 613 are pivotably mounted.
  • the sealing jaws 613 can be heated so that they are set up for applying two sealing seams on the two short sides of the pouch film 603.
  • the sealing seam on the long sides of the pouch film 603 can be introduced by a heating element (not shown) of the base 612 and by a heating element (not shown) that is arranged opposite the base 612 .
  • the sealing seam is produced in a single process step, ie simultaneously.
  • the transport element 602 itself can represent part of the sealing device;
  • the transport element 602 can be heated, for example, in a locally defined area.
  • Figure 7.14 shows the machine 601 in a fourth embodiment during the removal of the sealed unit 610 and transfer to the delivery device 611.
  • the transport device 602 is rotated starting from the processing device 609 by rotating the rotation device 605 by 90° to the delivery device 611.
  • the transport element 602 opens, i.e. the two rotary discs 619a and 619b are moved apart in the axial direction, so that the clamping force acting on the unit 610 by the jaws 617 is released and the sealed unit 610 can be opened by means of the Gripping element 624 can be pulled out of the transport element 602.
  • the gripping element 624 then transfers the sealed unit 610 - as in the previous exemplary embodiments - to the conveying element 622.
  • the design of the feed device 607 and the delivery device 611 can deviate from the form shown here because they have to be adapted to the upstream and downstream processes.
  • the feed device 607 and/or the delivery device 611 can also be designed, for example, as a belt, drum and/or transport carriage.
  • rotation plate 619a and/or 619b can have further receptacles or transport elements, so that an even higher degree of parallelization of the individual production steps can be achieved.
  • the manufacturing process can thus be configured in multiple lanes.
  • Figure 7.15 shows a fifth embodiment of the machine 601, which is a modification of the fourth embodiment.
  • the machine 601 differs in particular in the feed device 607.
  • the first feed part 607a includes the transfer device 627, which in this case is set up to pick up only one sheet of pouch film 603 from the pouch film stack 629 and transfer it to the transport element 602. This is the pouch film 603 forming the top of the unit 610.
  • the transport element 602 is then moved by rotating the rotation device 605 about the axis of rotation 606 at an angle of 90° into the second partial area of the feed section 608, where the second feed part 607b transfers the cell stack 604 together with a layer of the pouch film 603 to the transport element 602 will.
  • This is the pouch film 603 forming the underside of the unit 610 .
  • the second feed part 607b comprises a further rotation device 655 whose axis of rotation 656 is aligned parallel to the axis of rotation 606 of the rotation device 605 .
  • the further rotation device 655 includes feed transport elements 652, with which the transport element 602 of the primary rotation device 605 can be charged.
  • the feed transport elements 652 are transported by a transfer 657 is filled with a layer of pouch film 603, the transfer device 657 working according to the same functional principle as the transfer device 627 and is also supplied by a pouch film stack 659.
  • the feed transport device 652 is filled with the cell stack 604, this being done with a conveying element 621 and a gripping element 623—as they are already known from the previous exemplary embodiments.
  • the cell stack 604 can thus also be placed in the feed transport element 652 in such a way that the cell stack 604 is surrounded by a pouch film 603 on one side.
  • the rotation device 655 is then rotated further until the infeed transport element 652 reaches the infeed section 608, in which the cell stack 604, surrounded on one side by the pouch film 603, is transferred to the transport element 602 of the rotation device 605, in which a layer of pouch film 603 is already arranged, so that in the supply section 608, the unit 610 comprising the cell stack 604 surrounded on both sides by a pouch film 603 is formed.
  • the transport element 602 is moved by rotating the rotation unit 605 about the rotation axis 606 along a circular path via the processing device 609 to the delivery device 611.
  • Figure 7.16 shows another machine 670 according to a first embodiment, comprising a first conveyor device 636 for conveying the cell stack 604 in a linear movement, and a second conveyor device 637 for conveying the pouch film 603.
  • the second conveyor device 637 is set up to transport the pouch film 603 to the cell stack 604 on the first conveyor device 36 so that the pouch film 603 at least partially encloses the cell stack 604, with the second conveyor device 637 comprising at least one rotation device 605 which is mounted such that it can rotate about a rotation axis 606 and is set up to move the pouch film 603 on a circular path to the To lead cell stack 604.
  • the rotating device 605 is a double disk comprising the first and the second rotating disk 619a and 619b, as is already known from FIGS. 7.9 and 7.12 to 7.14.
  • Figure 7.17 shows the machine 670 in a second embodiment.
  • a first conveying device 636 is also provided in this embodiment, with which the cell stacks 604 are conveyed in a linear movement.
  • the second conveyor device 637 comprises a first and a second rotation device 605 and 655, which each convey a sheet of the pouch film 603 on a circular path to the first conveyor device 636. In this way, a sheet of pouch film 603 can be brought together with the cell stack 604 at a first transfer point 634 so that it covers the upper side of the cell stack 604 .
  • the cell stack 604 is then guided along the material flow 639 by the first conveyor device 636 to the further rotation device 655, where at a second transfer point 635 another sheet of pouch film 603 is brought together with the cell stack 604, so that the underside of the cell stack 604 is also covered with a pouch film 603 is covered.
  • the respective pouch films 603 lie overlapping on the upper side and underside of the cell stack 604, so that the overlapping sections of the pouch film 603 around the cell stack 604 can be provided with a sealing seam in a sealing device that follows in the process and is not shown .
  • the two rotation devices 605, 655 are single discs, as are already known from the embodiment according to FIG. 7.15.
  • the transfer devices 627 and 657 are also already known from the embodiment according to FIG. 7.15.
  • Figure 7.18 schematically shows a method 660 for manufacturing the unit 610 using the machine 601 according to the first to fifth embodiments; see figures 7.1 to 7.15.
  • Method 660 includes the following method steps:
  • a first method step a the cell stack 604 and the pouch film 603 are transferred to the transport element 602 in the feed section 608, so that the pouch film 603 completely encloses the cell stack 604.
  • a method step b) the transport element 602 is moved on a circular path around the axis of rotation 606 of the rotation device 605 until it reaches the processing device 609 .
  • a method step c) the processing of the unit 610 of cell stack 604 and pouch film 603 takes place, for example by means of a sealing device, so that the cell stack is completely sealed within the pouch film 603.
  • the pouch film 603 is closed around the cell stack 604 with a sealing seam.
  • the transport device 602 is moved on a circular path around the axis of rotation 606 of the rotation device 605 until it reaches the delivery device 611 .
  • the processed unit 610 made of cell stack 604 and pouch film 603 is transferred from the transport element 602 to the delivery device 611 .
  • the closed unit 610 can then be further processed in a subsequent method step. This can include, for example, filling the pouch with an electrolyte so that, for example, a lithium-ion battery or a corresponding preliminary stage of a lithium-ion battery is formed. The filling can take place, for example, by means of a syringe or by partially separating and resealing the sealing seam.
  • the machine 710 for producing cell stacks comprises a feed section 711 for feeding starting materials, namely essentially endlessly fed separator webs 780, 781 and electrodes or electrode sheets, namely anode and cathode sheets, to a subsequently arranged collecting and connecting section 712, in which the separator tracks 780, 781 and electrodes are brought together and placed one on top of the other.
  • the gathering and bonding section 712 includes a bonding device 714 that bonds the superimposed materials together to form a continuous composite separator-electrode web 784 .
  • a cutting and stacking section 713 follows in the conveying direction behind the collecting and connecting section 712. This comprises a cutting device 715 for cutting the separator-electrode composite web 784 into individual composite units, for example monocells, and a stacking station 728 for stacking the composite units to form cell stacks .
  • the feeding section 711 includes electrode manufacturing sections 718, 719 for manufacturing electrodes, namely an anode manufacturing section 718 for manufacturing individual anode sheets or anodes, and a cathode manufacturing section 719 for manufacturing individual cathode sheets or cathodes.
  • the electrode production sections 718, 719 are preferably constructed in the same way. In the following, the cathode manufacturing section 719 will be described as an example.
  • the electrode manufacturing sections 718, 719 each have a cutting apparatus 720.
  • FIG. The rotating cutting apparatus 720 is used to cut the endlessly fed electrode web, here the cathode web 783, into individual electrodes, here cathodes.
  • the cutting apparatus 720 comprises a knife shaft 721 and a cutting drum 722.
  • the knife shaft 721 is equipped with knives along its circumference. Corresponding grooves are provided on the cutting drum 722 around its periphery.
  • the knife shaft 721 is arranged tangentially to the cutting drum 722 .
  • the rotary drives of the knife shaft 721 and the cutting drum 722 are coordinated in such a way that a knife that comes into the contact area of the knife shaft 721 and the cutting drum 722 engages in a groove of the cutting drum 722 in order to cut the electrode track 783.
  • the electrodes cut in this way are conveyed further by the cutting drum 722 by means of a vacuum and delivered to a subsequent transport drum 725 .
  • the electrodes are held on the transport drum 725 with a vacuum and conveyed further by rotation.
  • the pitch change drum 726 serves to provide the electrodes 795 with a distance from one another in the longitudinal direction.
  • the cut electrodes and the uncut separator films 780, 781 are placed on the collecting device 717, which is embodied here as a collecting drum 727, in a defined sequence at different points on the circumference.
  • the material formation consisting of separator webs 780, 781 and electrodes inserted between them are conveyed further by the rotary-driven collecting drum 727 and connected to one another by means of a connecting device 714, here a laminating device with laminating roller 729, whereby a uniform, endless separator-electrode composite web 784 is produced.
  • the result is therefore an endless web 784 of cut and positioned electrodes, which are connected to the endless separator films 780, 781 by bonding and/or laminating.
  • Heating device 730 may be provided.
  • a cooling device 731 for example a cooling drum 771, can then be provided for the separator-electrode composite web 784.
  • a test section 732 can be provided between the connecting device 714 and the cutting device 715, which has one or more test devices 733, in particular for testing the positions of the anodes and cathodes in the composite web 784.
  • the composite web 784 is cut into individual separator-electrode composite units by means of the cutting device 715, as a result of which monocells are produced.
  • the cutting device 715 is advantageously constructed in the same way as the cutting devices 720 described above and preferably comprises a cutting drum 734 with grooves 736, over which the composite web 784 is guided, and a knife roller 735 with knives 737, which cut the composite web 784 by engaging in the grooves 736 .
  • the cutting and stacking section 713 preferably includes a subsequent test drum 738, on which electrical properties of the individual composite units or monocells are measured using a corresponding test device.
  • a further transport drum 739 can be provided following the test drum 738 .
  • the cutting and stacking section 713 preferably comprises an ejection drum 740 following the at least one test drum 738.
  • Composite units or monocells 91 can be ejected from the ejection drum 740, preferably downwards. This will be explained in more detail later.
  • the subsequent drum system of the stacking station 728 is used to stack the composite units or monocells 91 into cell stacks.
  • One or more removal points 750 are advantageously provided at one or more positions along the product flow in the machine 710, at which product segments such as electrode sheets or separator-electrode composite units can be removed from the product flow, with each removal point being assigned a corresponding delivery device 763.
  • the removal points 750 and the delivery devices 763 are preferably arranged behind corresponding cutting positions in the conveying direction.
  • a removal point 750 and a delivery device 763 for removing and ejecting cut anodes from the product flow are provided in the conveying direction behind the knife roller 721 for cutting the anodes.
  • a corresponding removal point and discharge device for removing and ejecting cut cathodes from the product flow can be provided downstream of the knife roller 723 of the cathode production section 718 .
  • a removal point 750 and a delivery device 763 for removing and ejecting cut composite units from the product flow are advantageously provided in the conveying direction behind the knife roller 735 for cutting separator-electrode composite units.
  • Each delivery device 763 is preferably realized in a transport device, for example a transport drum of the machine 710.
  • a dispensing device 763 is implemented in the transport drum 725, which can therefore also be referred to as a dispensing drum 752.
  • the dispensing device 763 is realized in an analogous manner in the ejection drum 740, which can therefore also be referred to as the dispensing drum 752.
  • the position of the respective delivery devices 763 in the product flow is variable and can be determined, for example, depending on the structural conditions.
  • the electrode dispensing device 763 can alternatively be realized in the cutting drum 722 or the pitch-changing drum 726; the composite unit dispenser 763 may alternatively be implemented in one of the drums 734, 738 or 739.
  • the picking positions are also dependent on time management. For example, it must be ensured that the ejection-generating information has already been processed and the delivery device can be actuated in sequence when the product to be ejected is guided past there.
  • the extraction points can be located at any suitable position in the machine and are not restricted to the transport drum 725 or the ejection drum 740 in FIG. 8.1.
  • the product segments 754 that are removed from the product flow fall down from the discharge drum 752 due to the force of gravity, for example, and are picked up by a collecting device 756 .
  • the collecting device 756 preferably comprises one or more collecting containers 757 into which the removed product segments 754 fall due to the force of gravity.
  • each removal point 750 or each delivery device 763 is assigned a corresponding collection container 757.
  • the collection container or containers 757 can be removed from the machine manually or automatically. For example, the collecting container(s) 757 can be moved, adjusted, moved or swiveled out of the machine.
  • the collecting device 756 comprises a collecting container 758 that can be adjusted, moved or moved between several removal points 750, for example by means of an electric motor.
  • the fixed assignment between collecting container and removal positions according to FIG. 8.1 is canceled here.
  • the collection container 758 can advantageously be moved out of the machine 710 through a sluice 759, which is only shown schematically.
  • a plurality of movable collecting containers 758 can be provided in order to increase the removal capacity.
  • a collection container 758 that has been moved out of machine 710 and emptied can, for example, be returned to machine 710 on a ring course or in the opposite direction will drive in.
  • the collecting device 756 comprises a driven conveyor device 760, here for example an endless conveyor belt, which extends between a plurality of removal points 750 and/or through a lock 759 into the machine environment 765.
  • a driven conveyor device 760 here for example an endless conveyor belt, which extends between a plurality of removal points 750 and/or through a lock 759 into the machine environment 765.
  • One or more receptacles 757 may be provided on the conveyor belt.
  • the conveyor device 760 or the conveyor belt can also be set up without a collecting container 757 for receiving the product segments 754 that have been removed.
  • Product segments 754 picked up by the conveyor device 760 can advantageously be conveyed out of the machine 710 through the lock 759 .
  • FIG. 8.4 shows an embodiment of a delivery drum 752, which is driven to rotate in the direction of rotation R and is set up to transport product segments 782 by means of vacuum.
  • the delivery drum 752 has a vacuum device 741, which is set up to supply the lateral surface 742 of the delivery drum 752 in order to hold product segments 782 there by means of suction.
  • the delivery drum 752 is divided into six sectors corresponding to an angular distance of 60° between two product segments 782, other divisions with more or fewer sectors being possible.
  • the vacuum device 741 comprises a central vacuum reservoir 743, for example, which can be tubular, for example, and vacuum lines 744, which connect the vacuum reservoir 743 to the lateral surface 742 of the dispensing drum 752.
  • a switchable valve 745 is provided in each vacuum line 744 and can be controlled individually by a control device 790, for example the machine control.
  • the valves 745 are arranged in the rotating part of the discharge drum 752 and consequently rotate with the drum jacket 742 and with the product segments 782 held thereon.
  • a product segment 782 in the product flow of the machine 710 For transporting a product segment 782 in the product flow of the machine 710 from a first peripheral position (in Fig. 8.4, for example, at 9 o'clock), where the product segment 782 is taken over by an upstream conveyor, to a second peripheral position (in Fig. 8.4, for example, at 3 o'clock) , where the product segment 782 is delivered to a downstream conveying device, the associated valve 745 is open, so that negative pressure is applied to the corresponding part of the lateral surface 742. To deliver the product segment 782 to the downstream conveyor, the valve 745 is closed in the second circumferential position (e.g. at 3 o'clock) and then opened again before the 9 o'clock position is reached in order to be able to receive another product segment 782.
  • the valve 745 is closed in the second circumferential position (e.g. at 3 o'clock) and then opened again before the 9 o'clock position is reached in order to be able to receive another
  • the dispensing drum 752 has an ejection or dispensing position 750 at, for example, 6 o'clock. If a specific product segment 782 is to be removed from the product flow, the control device 790 controls the corresponding valve 745 as a result of an ejection request by means of a switching signal when the product segment 782 to be removed has reached the delivery position 750 in order to close the corresponding valve 745. Due to the lack of negative pressure at the delivery position 750, suction force is no longer exerted on the product segment 782 to be removed; this can fall down due to gravity and is thus removed from the product flow away. The valve 745 is opened again before the 9 o'clock position is reached in order to be able to receive another product segment 782.
  • product segments 782 that are to be ejected can therefore be separated from the vacuum supply from a specific circumferential position (here 6 o'clock) and in this way be safely removed from the delivery drum 752.
  • FIG. 8.5 Another embodiment of a dispensing drum 752 is shown in Figure 8.5.
  • a vacuum device 741 is provided in order to hold and transport product segments 782 on the lateral surface of the delivery drum 752 by means of vacuum.
  • the vacuum device 741 can be designed here in the form of one or more spatially fixed sectors.
  • the vacuum sector extends in the lower half of the discharge drum 752 between 9 o'clock (takeover from an upstream conveyor) and 3 o'clock (transfer to a downstream conveyor).
  • a spatially fixed compressed air line 746 with a switchable valve 747 arranged therein is provided, the compressed air line 746 opening out at or in the area of the removal position 750 .
  • the valve 747 in the compressed air line 746 is closed during normal production operation. If a product segment 782 is to be ejected from the delivery drum 752, the control device 790 controls the valve 747 in order to open it.
  • the compressed air then flowing out of the mouth of compressed air line 746 breaks or neutralizes the vacuum generated by vacuum device 741 locally at removal position 750, so that the suction force on product segment 782 is eliminated and product segment 782 can fall out of the product flow due to gravity.
  • the delivery device 763 configured as in FIG. 8.5 is supplemented by a receiving device 724 with a receiving drum 748, which is arranged in the area of the delivery position 750 of the delivery drum 752 tangentially to the latter.
  • the receiving drum 748 is preferably embodied as a segmented drum and has a vacuum sector 749 in a first peripheral section, for example in the form of a cam, which here extends, for example, by about 50°, and in a second peripheral section a vacuum-free sector 761, which here, for example, extends around extends the remaining 310°.
  • the vacuum sector 749 is supplied with vacuum via the central vacuum reservoir 762, for example.
  • a first switch position which is not shown in FIG. 8.6, the rotational position of the receiving drum 748 is set such that the vacuum sector 749 faces away from the delivery drum 752 and is therefore not in an operative relationship with the delivery drum 752.
  • the negative pressure-free sector 761 of the receiving drum 748 is in the delivery position 750 of the delivery drum 752.
  • the receiving drum 748 is thus switched to be non-functional and the parts held on the delivery drum 752 and passing through the delivery position 750
  • the product segments 782 are conveyed further on the delivery drum 752, here for example until 3 a.m. (first partial flow).
  • the vacuum sector 749 of the receiving drum 748 is pivoted in the direction of rotation R' into the area of the delivery position 750 of the delivery drum 752 (see Figure 8.6).
  • the valve 747 is opened by the control device 790 and the delivery position 750 is pressurized with compressed air in order to break the vacuum generated by the vacuum device 741 there (second switch position). Since the delivery drum 752 no longer exerts a suction force on the product segment 782 located in the delivery position 750, this is sucked in and taken over by the vacuum sector 749 of the receiving drum 748.
  • the product segment 782 is conveyed further and can be delivered to a conveying device (not shown) arranged downstream of the receiving drum 748 (second partial flow).
  • the negative pressure of the delivery drum 752 is broken or neutralized by means of compressed air in order to deliver a product segment 782 to the receiving drum 748.
  • the vacuum of the dispensing drum 752 need not be reduced to zero. It is generally sufficient for the transfer if the vacuum of the receiving drum 748 exerts a stronger suction force on the product segment 782 than the vacuum of the delivery drum 752.
  • FIG. 8.7 A further embodiment of a device for branching or dividing a product flow into two partial flows, i.e. a product diverter in the machine 710, is shown in FIG. 8.7.
  • both the dispensing device 763 and the receiving device 724 are designed as in FIG. 8.5.
  • the receiving drum 748 thus also has a vacuum device 766 supplied with vacuum from a vacuum reservoir 772 in order to hold and transport product segments 782 on the lateral surface 767 of the receiving drum 748 by means of vacuum.
  • the suppression device 766 may be embodied in the form of one or more solid sectors.
  • the vacuum sector extends in the right half of the receiving drum 748 between 12 o'clock (possibly taken over by the delivery drum 752) and 6 o'clock (transfer to a downstream conveyor). Furthermore, a stationary compressed air line 768 with a switchable valve 769 arranged therein is provided, the compressed air line 768 opening out at or in the area of a receiving position 770 of the receiving drum 748 .
  • the control device 790 controls the valves 747, 769 in such a way that at any time one of the valves 747, 769 is open and the other valve 769, 747 is closed.
  • valve 769 is opened and valve 747 is closed (first switch position)
  • the compressed air emerging from compressed air line 768 breaks the negative pressure generated by vacuum device 66
  • receiving drum 748 is deactivated and the items held on delivery drum 752 and the delivery position 750 product segments 782 passing through are conveyed further on the delivery drum 752, here for example until 3 a.m. (first partial flow).
  • the valve 747 is open and the valve 769 is closed (second switch position)
  • the compressed air emerging from the compressed air line 746 breaks the negative pressure generated by the negative pressure device 741 .
  • a device for branching or dividing a product flow can alternatively be produced starting from the delivery device 763 designed according to FIG. 8.4 by adding a receiving device 724 as designed in FIG. 8.6 or FIG. 8.7.
  • the central element of the dispensing device 763 in the form of a dispensing drum 752 was described.
  • Other configurations are possible, for example in the form of a discharge belt conveyor. The same applies to the design of the receiving device 724.
  • FIG. 9.1 shows an advantageous exemplary embodiment of an intermediate product 810 for the production of composite elements 830 in the energy cell-producing industry in a schematic representation.
  • the intermediate product 810 has a conductor foil 811 that is partially coated with an anode material 812 .
  • the coated base area of the conductor foil 811 is rectangular in this exemplary embodiment.
  • An uncoated contact tab 813 of the conductor foil 811 protrudes on a first edge side 820 .
  • Two retaining tabs 814 of the conductor foil 811 are provided on a second edge side 821, which lies opposite and parallel to the first edge side 820.
  • the two holding tabs 814 are arranged in the corners of the second edge side 821, each with a third edge side 822, which are aligned perpendicularly to the first and second edge side 820, 821.
  • the two retaining tabs 814 are also symmetrical to a central axis 823, the central axis 823 being perpendicular to the third edge side 822.
  • FIG. 9.2 shows a further exemplary embodiment of an intermediate product 810 for the production of composite elements 830 in the energy cell-producing industry.
  • the exemplary embodiment in FIG. 9.2 is shown rotated in relation to FIG. 9.1 and also has a partially coated conductor foil 815 with an uncoated contact tab 817 on a first edge side 820.
  • the conductor foil 815 is coated with a cathode material 816 .
  • Two retaining tabs 818 arranged symmetrically to a central axis 823 are also provided on a second edge side 821, which is aligned parallel to the first edge side 820.
  • FIG. 9.3 shows another exemplary embodiment of an intermediate product 810, the contact tab 813, 817 and the two retaining tabs 814, 818 each having a through hole 824 that can be used to align and/or position the intermediate product 810.
  • the through-holes 824 can also be used to receive and hold the intermediate product 810 .
  • FIG. 9.4 shows an exemplary embodiment of a composite element 830 with two intermediate products 810 with a conductor foil 811 coated with anode material 812 and a conductor foil 815 coated with cathode material 816.
  • the two intermediate products 810 are separated in the composite element 830 in a stacked arrangement by a separator film 825 arranged in between.
  • the coating with cathode material 816 and anode material 812 faces separator film 825 in each case.
  • Contact tab 813 of conductor foil 811, arranged at the top in Figure 9.4, and contact tab 817 of conductor foil 815 are provided opposite one another in composite element 830 and each protrude beyond separator foil 825, so that, for example, electrical contact can be made with contact tabs 813, 817 independently of of the separator film 825 can take place. Furthermore, the retaining tabs 814, 818 can be seen, which protrude beyond the separator film 825 for handling independently of the separator film 825.
  • the holding tabs 814, 818 can be used in a simple manner in a production process, for example for producing the stacked arrangement of the composite element 830, in order to grip or fix an intermediate product 810 or a composite element 830 with such an intermediate product 810.
  • the gripping can be done, for example, with a mechanical gripper and/or a vacuum-based gripper as the fixing means.
  • the contact tabs 813, 817 can also be gripped, which in the illustrated exemplary embodiments with retaining tabs 814, 818 lying opposite the contact tabs 813, 817 is advantageous for receiving the intermediate element 810.
  • further holding tabs 814, 818 can also be provided, for example next to the contact tab 813, 817 on the first edge side 820.
  • the individual intermediate products 810 can be picked up, moved and/or rotated quickly and then set down precisely by means of the gripped holding tabs 814, 818 and, if necessary, the gripped contact tabs 813, 817.
  • the coating with anode material 812 or cathode material 816 on the conductor foils 811, 815 and in particular their surface is not contacted by using the holding tabs 814, 818 when picking up, so that any negative influence through handling can be avoided.
  • FIG. 9.5 shows a schematic representation of a machine 835 for handling intermediate products 810 or composite elements 830, with various steps in a process sequence being represented.
  • the process flow is from right to left in Figure 9.5.
  • a separator film 825 is provided, see right, on which a conductor film 815 coated with a cathode material 816 is placed in a next step.
  • the conductor foil 815 and thus the entire intermediate product 810 can be picked up in the machine 835 at the holding tabs 818 and the contact tabs 817 and placed on the separator foil 825 that is conveyed onward.
  • a further separator film 825 is placed on the intermediate element 810 with cathode material 816.
  • the separator film 825 does not protrude beyond the retaining tabs 818 and the contact tab 817, so that these are available for further handling even with a separator film 825 in place.
  • FIG. 9.5 On the left in FIG. 9.5, another intermediate product 810 is placed on the separator foil 825, which comprises a conductor foil 811 with an anode material 812, which cannot be seen in the illustration.
  • the retaining tabs 814 and the contact tab 813 protrude beyond the separator film 825 arranged underneath, so that when the intermediate product 810 is laid down by means of the retaining tabs 814, the separator film 825 is not in the way, particularly when using a pincer gripper.
  • FIG. 9.6 shows a schematic representation of a machine 831 for producing an intermediate product 810, a conductor foil 811, 815 having an uncoated area 827 on a first and second edge side 820, 821. At least one section 828 of the conductor foil 811, 815 is separated from the uncoated area 827 in the machine 31 on the first edge side 820, for example by punching, so that one or more contact tabs 813, 817 are formed.
  • FIG. 9.7 shows a further schematic representation of the machine 831, in which the conductor foil 811, 815 is cut to form a third edge side 822, which is aligned perpendicular to the first edge side 820. Intermediate products 810 can therefore be separated, for example.
  • the retaining tabs 814, 818 are provided in the corners of the second and third edge sides 821, 822, which in this example are simultaneously cut perpendicularly to the first edge side 820.
  • the conductor foil 811, 815 can first be cut perpendicularly to the first edge side 820 in the machine 831, with only then a section 828 of the conductor foil 811, 815 being separated to form two retaining tabs 814 in this exemplary embodiment.
  • Figure 9.8 shows an alternative embodiment for solving the object of the invention, wherein a composite structure
  • 840 of the energy cell producing industry is shown in a plan view. It is a formation or a stacked structure of at least partially coated conductor foils 811, 815, which are at least partially coated with an anode material 812 or a cathode material 816. At least one separator film 825 for separating the anode material 812 and the cathode material 816 is also provided.
  • the respective layers in the shown stacked structure of the composite structure 840 have a centrally arranged recess 841 which have different opening widths or also different diameters.
  • the opening widths are selected in such a way that the lowest layer in the structure, for example an uncoated area of a conductor foil 811, has the smallest opening width or, alternatively, no cutout.
  • the overlying layers are then each provided with a preferably concentric recess which has at least the same opening width and preferably a larger opening. About this staggered in size recess
  • every layer of the composite structure 840 can be picked up by means of a vacuum or negative pressure. If all layers of the stacked structure have an exposed surface up, each layer of the entire composite structure 840 can be held in precise position with respect to one another, for example by means of a vacuum gripper. In an advantageous exemplary embodiment, four vacuum holding points can be provided for four different layers of a composite structure 840 . Furthermore, the laminating process step can be dispensed with. In this way, for example, a mono cell can be constructed with one hole in each layer.
  • FIG. 10.1 shows an advantageous exemplary embodiment of an intermediate product 922, which shows a composite element 920 in a pouch 910.
  • the pouch 910 is formed by a pouch film 911 which closes the composite element 920 from both sides with a circumferential sealing seam 912 and thus seals the composite element 920 in the pouch 910 .
  • the pouch 910 also has two contact tabs 923, which are routed through the sealing seam 912 and produce the electrical connection to the electrodes of the composite element 920 in the pouch 910.
  • the electrodes of opposite polarity of the composite element 920 are each separated from one another by a separator or a separator layer of the composite element 920 .
  • the pouch 910 has a dry composite element 920, ie there is no liquid electrolyte 921 in the sealed pouch 910.
  • an intermediate duct 922 in particular for the production of a battery cell, which is sealed gas-tight by the sealed pouch 910, so that the pouch 910 or the intermediate product 922 can be stored or transported in the ambient air without requiring special air conditioning of the ambient air for protection the materials of the composite element 920, in particular the active cathode and/or anode materials.
  • a section of the sealing seam 912 is a temporary sealing seam 913, which seals the pouch 910 but is only intended for a temporary sealing.
  • the temporary sealing seam 913 is arranged in the pouch 910 at a distance from the contour of the composite element 920, so that the composite element 920 does not completely fill the base area enclosed by the sealing seam 912.
  • the composite element 920 can cover, for example, 50% to 70% of the area enclosed by the sealing seam 912 with the temporary sealing seam 913 . The remaining free base area results in a free pocket in the pouch 910.
  • the peripheral sealing seam 912 has a rectangular shape, with the preliminary sealing seam 913 forming at least one side of the sealing seam 912 .
  • the section of the sealing seam 912 that forms the preliminary sealing seam 913 can also include, for example, parts of the two short sides of the rectangle corresponding to the exemplary embodiments in the figures.
  • the pouch 910 in the exemplary embodiment in FIG. 10.1 does not yet have any liquid electrolyte 921, but the preliminary sealing makes it possible to carry out the pouch 910 in this state as an intermediate product 922 from an area with strictly controlled atmospheric conditions.
  • the intermediate product 922 can be transported accordingly, for example within a machine 930 or a production plant, or from one machine 930 to another machine 931, see Figures 10.12 and 10.13, for further processing, in which case the environmental conditions can be kept within wider limits.
  • FIG. 10.2 shows the pouch 910 or the intermediate product 922 of FIG. 10.1, the pouch 910 again being in controlled atmospheric conditions, so that the pouch 910 can be opened without damaging active materials of the composite element 920, for example due to excessive humidity.
  • the intermediate product 922 or the pouch 910 is therefore opened again at a dividing line 924, with the sealing seam 912 being cut through at two points and the preliminary sealing seam 913 being severed.
  • the opened pouch 910 can then be filled with a liquid electrolyte 921 .
  • the pouch 910 filled with a liquid electrolyte is then sealed with a final sealing seam 914.
  • the final sealed seam 914 is preferably a section of the sealed seam 912 which connects the two parts of the pouch film 911 to one another, for example by fusing.
  • the composite element 920 with a liquid electrolyte 921 is thus sealed in the pouch 910 with a sealing seam 912, 914 close to the contour.
  • the protruding remainder of the pouch 910, which is separated from the pouch 910 filled with electrolyte 921 by the final sealing seam 914, is then separated at the further separating line 925.
  • FIGS. 10.4, 10.5 and 10.6 show another exemplary embodiment of an intermediate product 921 with a dry composite element 920 in a pouch film 911 with a sealed seam 912, a section of the sealed seam 912 representing a temporary sealed seam 913.
  • the intermediate product 922 which can be transported under expanded atmospheric conditions is shown in FIG. 10.4.
  • the intermediate product 922 has an additional, first, interrupted sealing seam 915, which runs through the pocket in the pouch 910 formed by the preliminary sealing seam 913.
  • the first interrupted sealing seam 915 has three interruptions 917 in this exemplary embodiment. The first interrupted sealing seam 915 therefore does not close the pouch 910 or does not close it completely.
  • FIG. 10.5 shows the intermediate product 922 from FIG. 10.4, which is to be opened again after transport or storage for filling with a liquid electrolyte 921.
  • the pouch 910 is separated and opened along the symbolic separating line 924, which is arranged between the preliminary sealing seam 913 and the first interrupted sealing seam 915. Accordingly, the three interruptions 917 in the first interrupted sealing seam 915 form openings in the pouch 910 through which a liquid electrolyte 921 can be filled.
  • the first interrupted sealing seam 915 can increase the stability of the pouch 910 when it is filled with a liquid electrolyte 921.
  • the pouch 910 After filling with a liquid electrolyte 921, the pouch 910 is closed with a final sealing seam 914, which runs as close as possible to the contour of the composite element 920.
  • the symbolic dividing line 925 which runs between the final sealing seam 914 and the first interrupted sealing seam 915, the remaining part of the pouch 910 or the pouch film 911 is separated, as a result of which the composite element 920 with an electrolyte 921 in a pouch 910 is completed.
  • FIGS. 10.7, 10.8 and 10.9 show an exemplary embodiment analogous to FIGS. 10.4, 10.5 and 10.6, a second interrupted sealing seam 916 being provided in the pouch 910 parallel to the first interrupted sealing seam 915.
  • the second interrupted sealing seam 916 is arranged between the composite element 920 and the first interrupted sealing seam 915 .
  • the first and second interrupted sealing seam 915, 916 each have three interruptions 917, which in turn correspond to one another, so that three opening axes result through the first and second interrupted sealing seam 915, 916.
  • Three passage elements 918 are inserted into the three interruptions 917 and are held in the first and second interrupted sealing seam 915, 916.
  • the passage elements 918 keep the interruptions 917 open.
  • the passage elements 918 are arranged within the pouch 910 closed or sealed by the provisional sealing seam 913.
  • a symbolic separating line 924 is drawn in FIG. 10.8, at which the pouch 910 is opened for filling with a liquid electrolyte 921 by cutting the pouch 910 open. This exposes the passage elements 918 through which the pouch 910 with the dry composite element 920 can be filled with a liquid electrolyte 921 .
  • the passage elements 918 simplify, in particular, automatic filling of the pouch 910.
  • the pouch 910 is then closed with a final sealing seam 914, which is arranged between the composite element 920 and the second interrupted sealing seam 916.
  • a final sealing seam 914 which is arranged between the composite element 920 and the second interrupted sealing seam 916.
  • the rest of the pouch film 911 can be separated with the first and second interrupted sealing seam 915, 916 and the passage elements 918.
  • FIG. 10.10 shows a further exemplary embodiment of an intermediate product 922 with a dry composite element 920 in a pouch 910, the pouch 910 being closed with a temporary sealed seam 913, which is arranged at a distance from the composite element 920.
  • Three valves 919 are inserted in the provisional sealing seam 913, which close the pouch 910 but still allow the pouch 910 to be filled with a liquid electrolyte 921.
  • the pouch 910 is finally closed with the final sealing seam 914, the final sealing seam 914 being provided close to the contour of the composite element 920.
  • the provisional sealing seam 913 can then be separated from the pouch 910 at the separating line 925 together with the valves 919 used.
  • FIG. 10.12 shows a schematic of a machine 930, 931 for carrying out the method for producing a composite element 920 with a preferably liquid electrolyte 921 in a pouch 910.
  • the method steps for production can be carried out, it being possible for the pouch 910 to be produced with a dry composite element 920 from a particularly controlled atmosphere due to the preliminary sealing seam 913 .
  • FIG. 10.13 shows a further schematic exemplary embodiment, with a machine 930 only carrying out the method steps for producing an intermediate product 922.
  • the intermediate product 922 can be taken out of the machine 930 and conveyed to another machine 931 without further protective measures, e.g. against normal humidity, where the intermediate product 922 or the pouch 910 is filled with a liquid electrolyte 921 and then with a final sealing seam 914 is sealed.
  • Machine for the energy cells producing energy characterized in that the machine has at least:
  • a collecting and connecting section (12) for bringing together and superimposing the supplied materials, thereby forming a material formation (52) of superimposed materials (95, 80, 93, 81), with a connecting device (14) for connecting the superimposed materials (95 , 80, 93, 81) to one another, whereby an endless composite separator-electrode web (84) is produced;
  • the sections (11-13) of the machine (10) are designed as essentially continuously driven transport devices, and/or
  • the transport speed in the feeding, collecting and connecting section (11, 12) is constant or within a range of ⁇ 25% of an average transport speed, and/or
  • the transport speed in the feeding, collecting and connecting section (11, 12) is at least 300 segments per minute.
  • /103/ Machine according to paragraph /101/ or /102/, characterized in that the section (13) of the machine (10) is at least predominantly equipped with rotating bodies, in particular rotating drums (21, 2 G, 22, 22', 25, 25', 26, 26', 27, 29, 31, 34, 35, 38-51) and/or stamping.
  • the collecting and connecting section (12) has a collecting device (17), in particular a rotatable collecting device (17), in particular a collecting drum (27), on which the supplied materials ( 93, 80, 95, 81) are brought together and superimposed.
  • the feed section (11) has at least one electrode production section (18, 19) with at least one cutting apparatus (20, 20') for cutting up an endlessly fed electrode web ( 22, 22') into individual electrodes (93, 95).
  • the electrode manufacturing section (18, 19) has a pitch changing device, in particular a pitch changing drum (26, 26'), for spacing the cut electrodes (93, 95 ) from each other in the conveying direction.
  • the connecting device (14) has one or more laminating rollers (29; 29A, 29B) for laminating the material formation (52).
  • the collecting and connecting section (12) has a heating device (30) for heating the material formation (52) before connecting.
  • the conveyor section (53) has at least one endless belt device (55A, 55B) with a continuously driven endless belt (56A, 56B).
  • the endless belt (56A, 56B) is set up to transfer heat from a heating device (30A, 30B) through the endless belt (56A, 56B) to the material formation (52) and is arranged.
  • the conveyor section (53) has at least one lower endless belt device (55A) arranged below the material formation (52) and/or at least one above the material formation (52) arranged upper endless belt device (55B).
  • the conveyor section (53) has a further endless belt device (57) on the input side or a section (58) of an endless belt device (55A) for bringing together and superimposing the materials supplied (95, 80, 93, 81).
  • /122/ Machine according to one of paragraphs /101/ to /121/, characterized in that upstream of the stacking station (28) in the conveying direction is an ejection device, in particular a rotationally driven ejection drum (40), for ejection from the testing device (33 ) and/or the testing device (38) is arranged as composite units (85) that have been assessed as being poor.
  • /123/ Machine according to one of paragraphs /101/ to /122/, characterized in that the stacking station (28) has at least one between a rotatable removal body, in particular a removal drum (41, 47) and a rotatable magazine body, in particular a magazine drum (44, 45), arranged rotatable segment bodies, in particular a segment drum (42, 43, 48, 49).
  • each segmented body in particular each segmented drum (42, 43, 48, 49) has at least one, preferably a plurality of removal rams (63, 64) mounted rotatably about the body axis, in particular drum axis has, which is set up in each case to accommodate a composite unit (85).
  • a rotatable cutting body in particular a cutting drum (110) on which a material web (160) is transported in a transport direction (T), and a laser cutting device (113) for cutting the material web (160) transversely to the transport direction (T) to produce individual segments (161) by means of a laser beam (L), characterized in that the laser cutting device (113) is arranged and set up in such a way that the laser beam ( L) is directed from the interior of the body, in particular the interior of the drum (167) of the cutting body (110) towards a body casing, in particular the drum casing (114) of the cutting body (110), the body casing, in particular the drum casing (114) having at least one passage opening (111). , So that from the inside of the body, in particular the inside of the drum (167) through the at least one passage opening g (111) the laser beam (L) exiting to the outside strikes the material web (160) to
  • the laser cutting device (113) is arranged and set up in such a way that the laser beam (L) hits the material web (160) starting from the axis of rotation (R) of the cutting body.
  • the device has a linear drive (117) and/or a linear axis (132) for linear displacement of the displaceable part (116; 124; 129; 130) during the cut.
  • /205/ Device according to one of paragraphs /201/-/204/, characterized in that at least one part (116; 124; 130; 133; 135) of the laser cutting device (113) rotates about the axis of rotation (R) of the cutting body (110) , or is rotatably or pivotably mounted about a parallel axis of rotation or pivoting (D).
  • /206/ Device according to paragraph /205/, characterized in that the device has a rotary or pivoting drive (120) for rotating or pivoting the rotary or pivotable part (116; 124; 129; 130; 133; 135) during the cut having.
  • the displaceable and / or rotatable or pivotable part (116; 124; 129; 130; 133; 135) of the laser cutting device (113) at least one Beam deflection element (116; 116A, 116B).
  • the displaceable and/or rotatable or pivotable part of the laser cutting device (113) comprises a non-pivotable, uniaxially pivotable or biaxially pivotable mirror element (129; 135 ) includes.
  • the displaceable and/or rotatable or pivotable part of the laser cutting device (113) comprises a polygon mirror element (130) and/or a polygon mirror roller (133).
  • the device (112) has a suction device (118) which is arranged to suck particles produced by laser cutting from the interior of the body, in particular the interior of the drum (167). and is set up.
  • suction device (118) is mounted with the laser beam (L) or with a movable part of the laser cutting device (113) so that it can be displaced and/or rotated or pivoted.
  • the device (112) has a compressed air device (137) for blowing away particles produced by the laser cutting device, in particular by means of a transverse air flow perpendicular to the laser beam.
  • /213/ Device according to one of paragraphs /201/ to /212/, characterized in that a suction device (136) for sucking off particles produced by the laser cutting is arranged outside above the cutting body (110).
  • the at least one through-opening (111) in the body shell, in particular the drum shell (114) is used for cutting dust extraction and/or optionally as a process gas supply.
  • the at least one passage opening (111) is a gap in the body casing, in particular the drum casing (114), extending across the width of the cutting body (110).
  • /216/ Device according to one of paragraphs /201/ to /215/, characterized in that the body shell, in particular drum shell (114) has a plurality of passage openings (111), each of which has the same angular stand apart.
  • the device (112) has at least one additional cutting body, in particular an additional cutting drum (138) and at least one additional laser cutting device (139).
  • a cutting rotation device which is driven by a drive device to rotate about an axis of rotation and is arranged on one side of the intermediate space (206) and has at least one cutting blade (203) protruding radially outwards from a boundary surface of the cutting rotation device, in particular a cutting drum (201) with at least one of a cutting blade (203) protruding radially outwards on a lateral surface of the cutting drum (201), and
  • the cutting knife (203) and the counter-knife (204) each have a cutting edge (208, 209), characterized in that
  • the cutting knife (203) comes into contact with its cutting edge (209) during the rotary movement of the rotary cutting device, in particular the cutting drum (201), in a point-like contact (K) on the cutting edge (208) of the counter-knife (204), and in doing so in a Angle of non-zero degrees to the cutting edge (208) of the counter knife is aligned, wherein
  • /306/ Cutting device according to one of paragraphs /301/ to /305/, characterized in that the cutting edge (209) of the cutting knife (203) and/or the cutting edge (208) of the counter knife (204) have a concave shape.
  • /307/ Cutting device according to one of paragraphs /301/to /306/, characterized in that the counter-knife (204) is arranged in a contact surface (219) on which the continuous web (205) and the cut from the continuous web (205). Segment (207) abuts, and that in the contact surface (219) on one side of the counter-knife (204) a recess (210) is provided.
  • the depression (210) has a base (217) which has a greater length (221) in the longitudinal direction of the contact surface (219) than that through the depression (210) recessed portion (220) of the bearing surface (219).
  • /311/ Cutting device characterized in that a plurality of compressed air openings (211) are arranged in a row arrangement parallel to the cutting edge (208) of the counter-knife (204) in the depression.
  • /313/ Cutting device according to one of paragraphs /301/to /312/, characterized in that the counter-knife (204) is mounted on a counter-motion body, in particular counter drum (202) is arranged.
  • /315/ Cutting device according to paragraph /313/ or /314/, characterized in that the cutting rotation device, in particular the cutting drum (201) and the counter-rotation body, in particular the counter-drum (202) can each be driven by separate drive devices.
  • /316/ Cutting device according to one of paragraphs /301/ to /315/, characterized in that in the area of the cutting blade (203) of the cutting rotation device, in particular the cutting drum (201) and/or in the area of the counter blade (204), a suction device (223 ) is provided.
  • /317/ Cutting device according to one of paragraphs /301/ to /316/, characterized in that a heating device is provided, by means of which the cutting knife (203) and/or the counter knife (204) at least in the area of their cutting edges (208, 209) are heatable.
  • a cutting device (302) is provided, by means of which the segments (306) are cut in a predetermined length from the continuous web (305), and
  • a pitch-changing body in particular a pitch-changing drum (303), is provided, which is driven by a drive device to rotate about an axis of rotation (D1), wherein
  • a plurality of transport segments (308) for receiving the segments (306) is provided on a lateral surface of the pitch-changing body (303), wherein
  • the transport segments (308) are arranged to be movable in relation to the radial and/or circumferential direction of the pitch-changing body (303), and
  • a takeover device (304) is provided, which takes over the segments (306) from the pitch-changing body (303), characterized in that
  • the pitch changing body (303) and the cutting device (302) are separate assemblies and/or functionally decoupled and/or the cutting device (302) is arranged between the supplied continuous web (305) and the pitch changing body (303), and
  • the transport segments (308) in the transfer point (Ul) take over segments (306) cut from the endless web (305) with the cutting device (302) and, increasing their distances (A) in the circumferential direction to the axis of rotation (D 1) to the transfer point (U2) and with the increased distances (A) to the transfer Device (304) passed.
  • the transport segments (308) in the transfer point (U2) have a distance of 1 to 10 mm, preferably 2 to 5 mm, in the circumferential direction of the pitch-changing body.
  • /403/ Separating device (301) according to paragraph /401/ or /402/, characterized in that a control device is provided which controls the movement of the transport segments (308) from the takeover point (U1) to the transfer point (U2).
  • control device is formed by a control cam which is stationary in relation to the pitch-changing body (303) and on which the transport segments (308) each bear with a control projection.
  • control device comprises at least one electrically controllable actuator which controls the movement of the transport segments (308).
  • /406/ Separating device (301) according to one of paragraphs /403/ to /405/, characterized in that the transport segments (308) can be moved in the radial direction of the pitch-changing body (303), and the control device causes the transport segments (308) to move from controls a smaller radius (RI) in the transfer point (Ul) to a larger radius (R2) in the transfer point (U2).
  • the transport segments (308) are movable in the circumferential direction of the pitch changing body (303), and
  • the control device transports the transport segments (308) from the transfer point (U1) to the transfer point (U2) at a speed with a higher peripheral speed than the peripheral speed of the pitch-changing body (303) and from the transfer point (U2) to the transfer point (U1) drives to a smaller peripheral speed than the peripheral speed of the pitch changing body (303).
  • the cutting device (302) is formed by a cutting body, in particular a cutting drum, driven by a drive device to rotate.
  • /411/ Separating device (301) according to paragraph /409/ or /410/, characterized in that the cutting body is arranged immediately adjacent to the pitch-changing body (303), and the segments (306) in the place of the smallest distance to the pitch-changing body (303) to the transfer point (U1) arranged transport segments (308).
  • the pitch changing body (303) has five, six, seven, eight, ten or twelve transport segments (308), and
  • the transport segments (308) in the transfer point (U 1) have an outer radius of 75 to 150 mm, preferably 90 mm to 125 mm in relation to the axis of rotation of the pitch changing body (303).
  • At least one separating device (301) is provided according to one of paragraphs /401/ to /412/, and
  • the segments (306) separated by the separating device (301) are fed to a connecting device (370) which connects the segments (306) to form formations.
  • the connecting device (370) has at least one fed continuous web (305), wherein the connecting device (370) has a first connecting device (373) which the continuous web (305) and the Laying segments (306) on top of each other to form a first formation.
  • the transfer device (304) is formed by a transport body driven to rotate, in particular a transport drum driven to rotate, and
  • the first connecting device (373) comprises a tensioning belt (375) surrounding the transport body, which takes over the segments (306) from the pitch-changing body (303) and places them on a conveyor belt (372) or on the endless track (305).
  • the takeover device (304) is formed by a conveyor belt on which the pitch-changing body (303) places the segments in the transfer point (U1), and
  • the endless web (305) is deflected via a deflection roller (377) and placed on the segments (306), which is arranged in such a way that in the direction of the conveyor belt it is at a smaller distance from the transfer point (U2) than the length of the segments ( 306) in the transport direction of the conveyor belt.
  • /417/ Plant according to one of paragraphs /413/ to /416/, characterized in that at least two separating devices (301) are provided, and the connecting device (370) has a second connecting device (374) which carries out the processing carried out by the separating devices (301 ) connects cut segments (306) to form second formations or connects the first formations formed by the first connecting devices to form a second formation.
  • a first feed device (402) is provided, which feeds segments (416), and - a cell stacking device (407) is provided, in which the segments (416) are placed on top of one another to form stacks (415), and
  • a removal device (403) is provided, which removes the stack (415) of the segments (416) from the cell stacking device (407), characterized in that
  • the cell stacking device (407) comprises at least two cell stacking devices (408) which remove the segments (416), stack them to form the stacks (415) and transfer the stacks (415) to the discharge device (403) in a clocked manner.
  • the cell stacking devices (408) have at least one removal device (411) which takes over the segments (416) in a predetermined sequence from the feed device (402).
  • /503/ Cell stacking system (401) according to one of paragraphs /501/ or /502/, characterized in that the cell stacking devices (408) are arranged in relation to the supplied segments (416) in succession.
  • the discharge device (403) has a plurality of workpiece carriers (406), each having a receptacle (422) into which the cell stacking devices (408) insert the stacks (415).
  • a second feed device (418) is provided, which is arranged upstream or downstream of the cell stacking device (407) in relation to a transport movement of the discharge device (403) and segments (416) into the receptacles (422) of the workpiece carriers (406) before the cell stacking devices (408) insert the stacks (415) into the receptacles (422) or insert segments (416) onto the stacks (415) arranged in the workpiece carriers (406). 415) hangs up.
  • the first feed device (402) has at least one transfer body which is driven in rotation about an axis of rotation by means of a drive device, in particular its transfer body in rotation about an axis of rotation by means of a drive device driven transfer drum (405, 421), which transfers the segments (416) to the cell stacking device (407).
  • the first feed device (402) has an even number of transfer bodies, in particular transfer drums (405, 421), and
  • an odd number of deflection bodies, in particular deflection drums (423), is provided, which takes over the segments (416) from a first transfer body, in particular a first transfer drum (405) and to a second transfer body, in particular to a second transfer drum (421).
  • a magazine rotating body in particular a magazine drum (410) with at least one magazine (413) is provided, which is interrupted by standstill phases, by means of a drive device to a repetitive Rotational movement about an axis of rotation can be driven, during which the magazine (413) is moved from a transfer point (ul) to a transfer point (u2) and from the transfer point (u2) to the transfer point (ul), wherein
  • a removal device (411) is provided, which feeds segments (416) to the rotating body of the magazine, in particular to the magazine drum (410), wherein
  • the removal device (411) fills the magazine (413) in the transfer point (ul) when the magazine rotating body, in particular the magazine drum (410), is at a standstill with a large number of segments (416) to form a stack (415) up to a predetermined stack height, and
  • a delivery device (412) is provided, which removes the stack (415) of segments (416) from the magazine (413) in the transfer point (u2).
  • the magazine (413) has at least one lateral access opening (417), and
  • the dispensing device (412) is formed by a stripping device which is stationary in relation to the magazine rotating body, in particular the magazine drum (410), which is arranged and aligned in such a way that it passes through the engagement opening (417) during the rotary movement of the magazine rotating body, in particular the magazine drum (410). engages and pushes the stack (415) out of the magazine (413).
  • the magazine (413) has at least two engagement openings (417) aligned in the circumferential direction of the magazine rotating body, in particular the magazine drum (410), and the stripping device the stack (415) pushes out of the magazine by reaching through both engagement openings (417).
  • /513/ Cell stacking device characterized in that the magazine (413) has a holding device (414) which holds the stack (415) during the movement of the magazine rotating body, in particular the magazine drum (410). fixed with the magazine (413) from the takeover point (ul) to the transfer point (u2) in the radial direction in the magazine (413).
  • a supply device (402, 418) which is designed and set up to supply segments (416) of energy cells in a number (AA) per time unit,
  • the first conveyor unit (Fl) is designed and set up to accept the number (AA) per unit time of the segments (416) from the feed device (402, 418) and a number (BB) per unit time of the segments (416) to a first To transport delivery area (Gl) and a number (CC) per unit time of the segments (416) to a second delivery area (G2), wherein
  • the number (BB) per unit of time of the segments (16) in the direction of the second conveyor unit (F2) can be transported and provided in the delivery area (Gl) to the second conveyor unit (F2) can be transferred, wherein
  • the number (CC) per time unit of the segments (416) in the second delivery area (G2), in particular to a cell stacking device (407), or to a cell stacking device (408), or to one or more removal devices (411) of a cell stacking device ( 407) is provided to be transferrable, and
  • the sum of the number (BB) per unit time of the segments (416) and the number (CC) per unit time of the segments (416) is less than or equal to the number (AA) per unit time of the segments (416).
  • the second conveyor unit (F2) as a rotationally drivable conveyor unit, in particular in the form of a deflection drum (423) or as an operatively connected combination of a first rotationally drivable conveyor unit, in particular in the form of a deflection drum (423) and a second rotationally drivable conveying unit, in particular in the form of a transfer drum (421).
  • a number (AA) of segments (416) per unit of time is supplied by means of a supply device (402, 418), which is designed and set up to supply segments (416) of energy cells in a number (AA) per unit of time,
  • the first conveyor unit (Fl) takes over the number (AA) per unit of time of the segments (416) from the feed device (402, 418) and a number (BB) per unit of time of the segments (416) to a first delivery area (Gl) and a Number (CC) transported per unit time of the segments (416) to a second delivery area (G2), wherein
  • the number (CC) per time unit of the segments (416) in the second delivery area (G2), in particular to a cell stacking device (407), or to a cell stacking device (408), or to one or more removal devices (411) of a cell stacking device ( 407) is passed and in particular
  • the second conveyor unit (F2) as a rotationally drivable conveyor unit, in particular in the form of a deflection drum (423) or as an operatively connected combination of a first rotationally drivable conveyor unit, in particular in the form of a deflection drum (423 ) and a second rotationally drivable conveyor unit, in particular in the form of a transfer drum (421).
  • Processing device for processing segments (501) of energy cells characterized in that
  • At least one feed device (506) is provided with a plurality of continuously or discontinuously fed workpiece carriers (505), each with a receptacle (519) for receiving one or more segments (501),
  • At least one fixing device (507) is provided with a plurality of fixing elements (508) driven to rotate by an endless drive device (513),
  • At least one processing station is provided, in which the workpiece carriers (505) supplied segments (501) are processed in a processing operation under the influence of mechanical forces, wherein
  • the segments (501) are fixed during the passage through the processing station via the fixing device (507) by at least one fixing element (508) in the receptacles (519) of the workpiece carrier (505).
  • the segments (501) are arranged in the receptacles (519) of the workpiece carrier (505) in such a way that they have a surface which is freely accessible from the outside and on which the fixing elements ( 508) come into contact with the pressure surface, and the pressure surface of the fixing elements (508) is smaller than the free surface of the segments (501).
  • /604/ Processing device according to one of paragraphs /602/ or /603/, characterized in that a control device (515) is provided, which controls the fixing elements (508) during the revolving movement to a pressing movement, during which they are with the pressing surface on the free surface of the segments (501) come into contact.
  • control device (515) is formed by a fixed control contour and control projections (514) running thereon which interact with the fixing stamps (508) in terms of movement.
  • At least one processing station comprises a punching device (510) which is electrically operated in an edge section of the segments (501). see contacts (504) to a predefined shape.
  • At least one processing station comprises a welding device (511) which connects conductor tabs (502) to the contacts (504) by a welding process.
  • At least one processing station comprises a tape device (509) in which the segments (501) individually and/or several segments (501) as a combination and/ or the welding points of the connections between the contacts (504) and the conductor lugs (502) are covered by means of one or more adhesive strips (503).
  • machining station is designed to be stationary in relation to the workpiece carriers (505) fed via the feed device (506).
  • /611/ Machining device according to one of paragraphs /601/ to /610/, characterized in that the machining station has a machining unit which is moved in the direction of movement of the workpiece carrier (505).
  • /612/ Machining device according to one of paragraphs /601/ to /611/, characterized in that the workpiece carriers (505) are moved through the machining device in a clocked manner via the feed device (506).
  • /613/ Machining device according to one of paragraphs /601/ to /612/, characterized in that the workpiece carriers (505) can be driven independently of one another by separate drive devices.
  • /615/ Machining device according to one of paragraphs /601/ to /614/, characterized in that at least two feed devices (506) are provided, which feed workpiece carriers (505) with segments (501) arranged therein in parallel feeds to different machining stations of the same function.
  • /616/ Machining device according to one of paragraphs /601/ to /615/, characterized in that at least two fixing devices (507) are provided with a plurality of fixing elements (508) driven to rotate by the endless drive device (513), each of which has segments (501) in parallel guided workpiece carriers (505) in different processing stations of the same function.
  • a rotation device which is mounted such that it can rotate about an axis of rotation (606) and with which at least one transport element (602) can be moved on a closed orbit, in particular a circular path;
  • the unit (610) can be conveyed by the rotation of the rotary element (605) from the feed section (608) via the at least one processing device (609) to the delivery device (611).
  • /702/ Machine (601) according to paragraph /701/, characterized in that the at least one transport element (602) is set up to hold the pouch film (603) in position relative to the cell stack (604) in such a way that the pouch film (603 ) overlapping on two opposite sides of the cell stack (604).
  • /703/ Machine (601) according to one of paragraphs /701/ or /702/, characterized in that the at least one transport element (602) comprises two clamping jaws (617) which can be subjected to a clamping force in such a way that the cell stack (604 ) and/or the pouch film (603) can be held by them.
  • P ⁇ I machine (601) according to paragraph /706/, characterized in that the clamping jaws (617) of the at least one transport element (602) are arranged between two opposite rotating parts (619a, 619b).
  • the at least one processing device (609) is one or more of the following devices:
  • the pouch film (603) arranged around the cell stack (604) can be at least partially closed with a sealing seam;
  • a shaping device by means of which the pouch film (603) can be brought into a predefined shape
  • an alignment device by means of which a predefined positioning and/or alignment of the pouch film (603) relative to the cell stack (604) can take place;
  • the pouch film (603) can be provided with functional elements, in particular with valves.
  • /709/ Machine 601 according to one of paragraphs /701/ to /708/, characterized in that the feed device (607) is set up to feed the pouch film (603) and the cell stack (604) as a common unit (610). to hand over the transport element (602). /710/ Machine (601) according to paragraph /709/, characterized in that the feed device (607) comprises a first feed part (607a) for feeding the pouch film (603) and a second feed part (607b) for feeding the cell stack (604). , wherein the cell stack (604) is enveloped by the pouch film (603) by means of a wrapping device (625).
  • the wrapping device (625) is set up to align the pouch film (603) in a plane perpendicular to the conveying direction of the cell stack (604), so that the movement of the cell stack (604) against the pouch film, the pouch film (603) lays around the cell stack (604).
  • the feed device (607) comprises a first feed part (607a) which is set up to transfer the pouch film (603) to the at least one transport element (602) within a first partial area of the feed section (608), wherein
  • the feed device (607) comprises a second feed part (607b) which is set up to transfer the cell stack (604) to the at least one transport element (602) in a second partial area of the feed section (608).
  • the first feed part (607a) comprises a wrapping device (625) with which the pouch film (603) can be transferred to the transport element (602) in the wrapped state.
  • the first feed part (607a) comprises a transfer device (627) which is set up to transfer a single sheet of pouch film (603) by means of a holding means (628 ) received from a pouch film stack (629) and transferred to the transport element (602).
  • /717/ Machine (601) according to paragraph /716/, characterized in that the holding means (628) rotates about a second axis (631), which is aligned orthogonally to the first axis (630), the uppermost sheet of the pouch film ( 603) can receive from the pouch film stack (629).
  • /718/ Machine 601 according to one of paragraphs /701/ to /717/, characterized in that the feed device (607) and/or the delivery device (611) is set up to move the cell stack (604) and/or the pouch film (603) in a linear movement.
  • /719/ Machine 601 according to one of paragraphs /701/ to /718/, characterized in that the feed device (607) and/or the delivery device (611) has a conveying element (621, 622) with a continuous conveying movement has, in particular a conveyor belt, and a gripping element (623, 624) with a discontinuous conveying movement.
  • the feed device (607) comprises a cutting device (620) for cutting the pouch film (603).
  • the feed device (607) has a rotation device (655) for moving the pouch film (603) and / or the cell stack (604) on a closed orbit, in particular a circular path.
  • Method (660) for producing a unit (610) of the energy cell producing industry characterized in that the production takes place using the machine (601) according to one of paragraphs /701/ to /721/.
  • Method (660) according to paragraph /722/, characterized in that the method (660) comprises the following method steps: a) Transfer of the cell stack (604) and the one-part or multi-part pouch film (603) to the transport element (602) in the feed section (608), so that the pouch film (603) at least partially encloses the cell stack (604); b) moving the transport element (602) on a closed orbit, in particular a circular path around the axis of rotation (606) of the rotation device (605) until it reaches the processing device (609); c) processing the unit (610) of cell stack (604) and pouch film (603); d) moving the transport element (602) on a closed orbit, in particular a circular path around the axis of rotation (606) of the rotation device (605) until it reaches the delivery device (611); and e) transferring the processed unit (610) of cell stack (604) and pouch film (603) from the transport element (602) to the delivery device (611).
  • the second conveyor device (637) is set up to bring the pouch film (603) together with the cell stack (604) on the first conveyor device (636) in such a way that the pouch film (603) at least partially encloses the cell stack (604), wherein
  • the second conveying device (637) comprises at least one rotation device (605, 655) which is rotatably mounted about an axis of rotation (606) and is set up to move the pouch film (603) on a closed orbit, in particular a circular path, towards the cell stack (604). to lead.
  • P25/ machine (670) according to paragraph /724/, characterized in that the first and/or second conveyor device (636, 637) is/are set up for this purpose. are to bring the pouch film (603) together with the cell stack (604) in such a way that the pouch film (603) overlaps on two opposite sides of the cell stack (604).
  • the second conveying device (637) comprises a first and a second rotation device (605, 655), which are each set up for conveying a sheet of pouch film (603), wherein - the first rotation device (605) brings the sheet of pouch film (603) together with the cell stack (604) at a first transfer point (634), and
  • the second rotation device (655) brings the sheet of pouch film (603) together with the cell stack (604) at a second transfer point (635).
  • Device for removing or branching off product segments (782) from a product stream of the industry producing energy cells characterized in that the device has at least one switchable delivery device (763) which is used to remove a product segment (782) from the product stream as a result of a switching signal is set up.
  • the device has a collecting device (756) which can be arranged to receive a product segment (782) removed from the product flow by the delivery device (752).
  • the collecting device (756) has at least one collecting container (757, 758) which can be arranged in particular below the dispensing device (763).
  • the collecting device (756) comprises a conveying device (760).
  • the collecting device (756) comprises a plurality of collecting containers (757, 758) which can in particular be assigned to different removal positions.
  • /807/ Device according to one of paragraphs /802/ to /806/, characterized in that a buffer device for temporarily storing removed product segments (782) is provided between the delivery device (763) and the receiving device (756).
  • the device has a holding device (741) for exerting a holding force on the product segment (782) in the product flow, characterized in that the switchable delivery device (763) for reducing or cancellation of the holding force is set up as a result of a switching signal.
  • the delivery device (763) has at least one rotatably driven delivery drum (752) and the holding device (741) for holding and Transporting at least one product segment by means of suction force on the lateral surface (742) of the delivery drum (752), the switchable delivery device (763) being set up to reduce or cancel the suction force as a result of a switching signal.
  • switchable dispensing device (763) has at least one switchable valve (745) arranged in a vacuum device (741) for interrupting the vacuum acting on a product segment (782).
  • /811/ Device characterized in that a compressed air device (746) on the delivery side, switchable by means of a valve (747), for example, is provided for conducting compressed air to a delivery point (750) of the delivery device (763). is.
  • the device has a rotatably driven delivery drum (752) which is set up to apply a product segment (782) by means of suction the lateral surface (742) of the delivery drum and to transport it, and has a rotary-driven receiving drum (748) with at least one vacuum sector (749) that can be subjected to a vacuum, in order to apply a product segment (782) to the lateral surface of the receiving drum (748) by means of suction holding and transporting, the device being controllable in such a way that, as a result of a switching signal for transferring a product segment (782), at least in a transfer area between the two drums (748, 752), a higher suction force is applied to the receiving drum (748) relative to the suction force of the dispensing drum (752).
  • a compressed air device (768) on the intake side which can be switched by means of a valve (769), for example, for conducting compressed air a receiving point (770) of the receiving drum (748) is provided.
  • the receiving drum (748) has at least one suction pressure-free sector (761) which is not subjected to suction pressure or has a lower suction force relative to the suction force on the delivery drum (752). Has suction pressure.
  • /816/ Device characterized in that the rotational position of the receiving drum (748) can be controlled in such a way that the suction-pressure-free sector (761) can be positioned in the transfer area to convey a product segment (782) on the delivery drum (752). , and for the transfer of a product segment (782) to the receiving drum (748), the vacuum sector (749) can be positioned in the transfer area.
  • /817/ Machine (710) of the energy cell producing industry comprising at least one device according to one of paragraphs /801/ to /816/ and an electronic control device (790) which is used to output a switching signal when there is a removal or transfer request for a product segment ( 782) is formed.
  • the intermediate product (810) has a conductor foil (811, 815) which is at least partially coated with an anode material (812) or a cathode material (816), wherein
  • the intermediate product (810) has an uncoated contact tab (813, 817) of the conductor foil (811, 815), which is arranged on a first edge side (820) of the intermediate product (810), characterized in that
  • the intermediate product (810) has at least one retaining tab (814, 818) on the first edge side (820) and/or on a second edge side (821), which is aligned parallel to the first edge side (820), and/or a third edge side ( 822) which is aligned perpendicularly to the first edge side (820).
  • Intermediate product (810) according to paragraph /901/ or /902/, characterized in that the intermediate product (810) has two retaining tabs (814, 818) on one of the edge sides (820, 821, 822), which are symmetrical to one Central axis (823) are perpendicular to this edge side (820, 821, 822).
  • At least one intermediate product (810) with a conductor foil (815) which is partially coated with a cathode material (816) is provided, wherein
  • the intermediate products (810) are separated from one another by the at least one separator film (825) in the stacked arrangement.

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Abstract

L'invention concerne une machine pour l'industrie produisant des cellules énergétiques, cette machine comprenant un ou plusieurs des dispositifs suivants : un dispositif (112) pour découper ou perforer une bande de matériau (160) ; un dispositif de découpe pour découper des segments (207) pour des cellules énergétiques dans une bande continue (205) ; un dispositif de séparation (301) pour découper et séparer des segments (306) pour des cellules énergétiques dans une bande continue (305) acheminée ; un système d'empilement de cellules (401) et/ou un dispositif d'empilement de cellules (408) pour des segments (416) de cellules énergétiques, ainsi qu'un dispositif diviseur associé et un procédé de division correspondant ; un dispositif de traitement pour le traitement de segments (501) de cellules énergétiques ; un dispositif (609 ; 636, 637) pour assembler et/ou traiter une feuille de poche (603) et un empilement de cellules (604) ; un dispositif pour prélever ou dévier des segments de produits (782) à partir d'un flux de produits de l'industrie produisant des cellules énergétiques ; un dispositif pour produire un produit intermédiaire (810) comprenant une feuille conductrice (811, 815), une patte de contact (813, 817) et au moins une patte de maintien (814, 818) et/ou un dispositif pour manipuler un produit intermédiaire (810) au moyen de la patte de maintien (814, 818) ; un dispositif pour produire une poche (910) scellée pourvue d'un joint de scellement provisoire (913) et/ou un dispositif pour défaire et/ou détacher le joint de scellement provisoire (913) de la poche (910).
EP22747657.9A 2021-07-12 2022-07-07 Machine, procédé et produit intermédiaire pour l'industrie produisant des cellules énergétiques Pending EP4371175A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021207364.6A DE102021207364A1 (de) 2021-07-12 2021-07-12 Maschine, Verfahren und Zwischenprodukt für die Energiezellen produzierende Industrie
PCT/EP2022/068901 WO2023285278A2 (fr) 2021-07-12 2022-07-07 Machine, procédé et produit intermédiaire pour l'industrie produisant des cellules énergétiques

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EP4371175A2 true EP4371175A2 (fr) 2024-05-22

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EP (1) EP4371175A2 (fr)
DE (1) DE102021207364A1 (fr)
WO (1) WO2023285278A2 (fr)

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DE102022105402A1 (de) * 2022-03-08 2023-09-14 Körber Technologies Gmbh Zellstapelanlage und Verfahren zum Stapeln
DE102022105394A1 (de) 2022-03-08 2023-09-14 Körber Technologies Gmbh Vorrichtung und Verfahren zum Bilden und Befördern von durch Segmente gebildeten Zellstapeln für die Energiezellen produzierende Industrie
DE102022105400A1 (de) * 2022-03-08 2023-09-14 Körber Technologies Gmbh Zuführeinrichtung zum Zuführen von Segmenten von Energiezellen zu einer Zellstapeleinrichtung und Verfahren zum Zuführen von Segmenten von Energiezellen zu einer Zellstapeleinrichtung
DE102022110254A1 (de) * 2022-04-27 2023-11-02 Körber Technologies Gmbh Verfahren und Vorrichtung zum klebenden Verbinden von Schichten einer Energiezelle
DE102022114553A1 (de) * 2022-06-09 2023-12-14 Körber Technologies Gmbh Vorrichtung und Verfahren zur Vorbehandlung von Materialbahnen für die Herstellung von gewickelten Energiezellen
IT202300004998A1 (it) * 2023-03-16 2024-09-16 Gd Spa Apparato per realizzare elettrodi in forma di foglio
CN117133965B (zh) * 2023-08-17 2024-08-13 广东比沃新能源有限公司 一种电池电芯封装设备
DE102024114407A1 (de) * 2024-05-23 2025-11-27 Schaeffler Technologies AG & Co. KG Verfahren zum Assemblieren einer Dünnschichteinheit und Anlage
DE102024128027A1 (de) * 2024-09-27 2026-04-02 Körber Technologies Gmbh Maschine zur Förderung und Verarbeitung von Materialbahnen und Materialbahnabschnitten für Batterien

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DE102017216213A1 (de) 2017-09-13 2019-03-14 Robert Bosch Gmbh Verfahren zur Herstellung eines Elektrodenstapels
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WO2023285278A2 (fr) 2023-01-19
DE102021207364A1 (de) 2023-01-12
WO2023285278A3 (fr) 2023-03-09

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