EP4423845A2 - Procédé et dispositif de stratification de composants d'un élément de batterie - Google Patents

Procédé et dispositif de stratification de composants d'un élément de batterie

Info

Publication number
EP4423845A2
EP4423845A2 EP22809738.2A EP22809738A EP4423845A2 EP 4423845 A2 EP4423845 A2 EP 4423845A2 EP 22809738 A EP22809738 A EP 22809738A EP 4423845 A2 EP4423845 A2 EP 4423845A2
Authority
EP
European Patent Office
Prior art keywords
stack
electrode
separator
components
plate
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
EP22809738.2A
Other languages
German (de)
English (en)
Inventor
Adrian BECKER
Christian Klemt
Tobias JANSEN
Marco Jordan
Kristian Lippky
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.)
Powerco SE
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP4423845A2 publication Critical patent/EP4423845A2/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
    • 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
    • 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
    • H01M10/0459—Cells or batteries with folded separator between plate-like electrodes
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to a method and a device for laminating components of a battery cell.
  • a battery cell comprises at least one electrode of a first type of electrode and at least one electrode of a second type of electrode, which are each arranged stacked on top of one another along a stacking direction, separated from one another by a separator material.
  • Electrodes and separators are referred to here as the components and form a stack as layers stacked on top of one another.
  • Each electrode has a carrier material coated with an active material and a conductor for making electrical contact with the electrode.
  • the battery cell is in particular a secondary battery cell.
  • Batteries in particular lithium-ion batteries, are increasingly being used to drive motor vehicles. Batteries are usually assembled from battery cells, each battery cell having a stack of layers, namely anodes, cathodes (electrodes) and separator material in between. The diverter of each electrode is used to divert the current provided by the battery cell to a consumer arranged outside of the battery cell.
  • a battery cell regularly includes a housing in which one or more stacks are arranged.
  • the arresters of the electrodes of the same electrode type are connected in parallel within the housing and connected to a connection on the housing.
  • a solid or non-liquid electrolyte is used in a solid-state battery cell. In other battery cells, the volume enclosed by the housing is filled with a liquid electrolyte. Both types of battery cells can be manufactured using the proposed method.
  • the lamination includes in particular the heating of the separator layers or separator materials, so that they form an adhesive connection with the adjacently arranged active material of the electrode.
  • Lamination of an entire battery cell stack is a time-sensitive process in lithium-ion battery cell manufacturing. It is known to use so-called heat presses/heat press machines for laminating stacks. In such machines, pressure and heat are applied to the stack by two heatable plates. The stack is heated by conduction. In addition to laminating, stacks are also fixed from the outside with tape.
  • laminated stacks offer advantages in terms of handling and further processing into complete battery cells. Battery cells with laminated stacks have better qualitative properties, especially in terms of longevity.
  • gases generated by a variety of mechanisms can have negative effects on cell performance and characteristics.
  • the negative effects of evolved gases can be reduced by forcing the gas to the edges of the stack rather than allowing the gas to form bubbles between the individual plies of the stack and thereby increase the interfacial resistance between the plies.
  • a laminated interface will often have a lower impedance (resistance) than one that is not laminated.
  • KR 10 2016 0047690 A discloses a device and a method for laminating battery cells by means of induction. In this case, mono-cells or bi-cells are fed through the device as endless material. The lamination thus takes place on the cell components moved by the device.
  • a device and a method for producing a fuel cell or a battery cell are known from JP 2004-207178 A, an electrode being connected to a housing. An adhesive is used that is inductively heated.
  • a method and a device for producing a fuel cell are known from EP 3 147 983 A1. Electrodes and separators are stacked one on top of the other and connected to each other with adhesive. The stack is heated inductively.
  • the object of the present invention is to at least partially solve the problems cited with reference to the prior art.
  • a method and a device are to be proposed by which lamination of the components of a battery cell is made possible.
  • the battery cell should be able to be produced as cost-effectively as possible, with the layers of a stack of components being arranged as precisely as possible on top of one another and remaining so during handling of the stack.
  • a method for laminating components of a battery cell is proposed.
  • the components include at least one electrode of a first type of electrode and a separator layer, which are arranged one on top of the other along a stacking direction and form a stack.
  • the method comprises at least the following steps: a) providing a device for lamination by means of induction, at least comprising a first plate and a second plate and an induction device; b) placing the stack of components between the first panel and the second panel; c) pressing the stack by the plates along the stacking direction; d) operating the induction device and heating the at least one separator layer to form an adhesive connection between the separator layer and the electrode; e) moving the plates apart; f) removing the laminated components from the device.
  • steps a) and f) are primarily intended to serve only as a distinction and does not impose any order and/or dependency.
  • the frequency of the process steps can also vary. It is also possible for method steps to at least partially overlap one another in terms of time or to be carried out simultaneously. Steps a) to c) and then e) and f) are very particularly preferably carried out in succession. Steps c) and d) can be carried out one after the other, interchanged or at least at times simultaneously. In particular, steps a) and b) and e) and f) are carried out in the specified order, with steps c) and d) being carried out in any order or at least partially together between steps b) and e). Optionally, at least step d) can be carried out at least partially during step e).
  • the device provided in step a) comprises in particular a first plate and a second plate with which the stack can be pressed.
  • the plates are designed in particular in such a way that the mutually contacting surfaces (hereinafter also referred to as contact surfaces) of the stack and plates are arranged or run parallel to one another.
  • the corresponding surfaces of the plates extend at least beyond the surfaces of the stack that contact these plates, if necessary beyond them, and are therefore in particular designed to be larger in terms of surface area.
  • the stack can be pressed together via the plates, in particular with a force distribution that is as homogeneous as possible, at least in planes that each extend parallel to the contact surfaces.
  • At least one plate can have a nanoscale or macroscale structure on a surface of the contact area, so that sticking between the plate and the stack can be prevented.
  • holes can be provided in the plate through which z.
  • B. compressed air or a mechanical ejector for separating plate and stack can be supplied.
  • the induction device comprises one or more induction coils, by means of which at least parts of the stack can be heated directly.
  • Induction device eddy currents are generated in the electrically conductive component and this directly heats it up.
  • Heating by means of induction is more efficient than other heating methods, because the energy is induced directly into the component intended for heating, so the heat is generated directly in the respective component and does not have to, as with other methods of heating, through thermal conduction, radiation or heat convection from the outside to the inside of the stack/components.
  • inductive heating is particularly advantageous because even in larger stacks with a large number of components, all components (or those provided for heating) can be heated, including the components that are spaced apart from the respective inductor.
  • step b) the stack is placed between the plates.
  • the stack can already be provided outside the device and then arranged as a stack in the device. Alternatively, the stack can also only be formed in the device by the components.
  • step c) in particular, the stack is pressed by the plates.
  • the components of the stack are pressed onto one another, in particular with a pressure of more than one bar, preferably at a pressure of more than 2 bar.
  • the pressing takes place at a pressure of at most 20 bar, in particular at most 10 bar.
  • air is pressed out of the stack, so that the components of the stack form contact surfaces with one another that are as large as possible.
  • a fundamentally known force-displacement control is used during pressing in order to regulate the pressure during pressing in a targeted manner.
  • step d) in particular, the induction device is operated and the at least one separator layer is heated to form an adhesive connection between the separator layer and the electrode.
  • the separator layer is not heated directly.
  • another component of the stack (not the separator layer) is heated by induction.
  • the separator layer is then heated, in particular by thermal conduction, starting from the component heated by induction. Alternatively or additionally, however, the separator layer can also be heated.
  • step e) the plates are moved apart, ie the pressing of the stack is ended.
  • the moving apart only takes place after the components have cooled down to a temperature below a melting temperature (or a glass transition temperature) of at least one of the components. In this way, in particular, the formation of bubbles can be prevented.
  • step f the laminated components and/or the laminated stack are removed from the device.
  • all components of the stack are connected to one another at least via the adhesion produced according to the method.
  • the stack has a plurality of electrodes of the first electrode type (e.g. an anode or cathode) and a plurality of electrodes of a second electrode type (different from the first electrode type) (e.g. a cathode or anode) and between the electrodes each have a separator layer.
  • first electrode type e.g. an anode or cathode
  • second electrode type e.g. a cathode or anode
  • the stack has at least ten electrodes of one type of electrode, preferably at least 100 electrodes of one type of electrode, particularly preferably at least 200 electrodes of one type of electrode.
  • Separator layers and electrodes can be stacked on top of each other to form the stack, with the different separator layers not being connected to one another.
  • separator layers are connected to one another.
  • two separator layers each form a pocket for an electrode, so that the electrode is arranged in the closed pocket.
  • a one-piece separator layer can extend over a number of electrodes in the manner of a Z-fold.
  • a one-piece separator layer extends over all electrodes of the stack in the manner of a Z-fold.
  • all the separator layers are connected to one another and the stack has only one separator material made in one piece.
  • the at least one or exactly one separator layer extends around the stack and is thus arranged in steps b) to e) between the stack and the first plate and between the stack and the second plate. In this way, the stack as a whole can be encompassed by the separator layer and the components can be fixed in their arrangement relative to one another.
  • the at least one electrode has a carrier material and a coating with active material on at least one side face of the carrier material.
  • the coating is located in the stack between the substrate and the separator.
  • the induction device is operated in particular in such a way that the carrier material is heated by induction, with the carrier material heating the at least one separator layer by thermal conduction.
  • the separator material can be made with particles or can comprise a coating with particles, it being possible for the particles to be heated by induction.
  • the individual electrodes comprise a foil-like carrier material, e.g. B. from a copper or aluminum material.
  • the carrier material is coated with an active material on one side or, in particular, on both sides.
  • the active materials of different types of electrodes are arranged separately from one another, in particular by the separator material.
  • the respective conductor is formed by an uncoated area of the carrier material.
  • the induction device can be operated in such a way that particularly suitable parameters are selected with regard to the respective material of the carrier material. Efficient heating of the carrier material can thus be achieved.
  • At least one or possibly each plate is designed as an inductor or has at least one inductor.
  • At least one of the plates has a plurality of inductors.
  • the at least one inductor can also be arranged at a distance from or just separately from the plates.
  • inductors are integrated into the plates. A defined force can be applied to the stack by the plates.
  • the inductors enable material-specific heating of the electrodes from the inside out, because material-dependent frequency control can be enabled. The temperature required for laminating can thus be reached in the entire stack within a few seconds.
  • lamination of a stack can be achieved in a time of less than 20, in particular less than 15 or even less than 10 seconds. In particular, this time is independent of the number of layers within the stack.
  • a stack that has at least 100 electrodes of one type of electrode, particularly preferably at least 200 electrodes of one type of electrode can also be laminated within the specified time of at most 20 seconds (complete).
  • a more homogeneous heating (in particular taking into account the short duration of the heating) of the stack or the components is achieved, in particular compared to heating by means of convection or conduction. This is achieved in particular by the targeted heating of the carrier materials arranged distributed in the stack, via which the respective separator materials are then heated.
  • porous structure of the separator material can be retained in this way, that is to say as a result of the heating of the electrodes and the heating of the separators that takes place as a result.
  • the separator material is not heated as a whole, but in particular only the contact surface of the separator material towards the adjacently arranged electrode.
  • a device for laminating components of a battery cell is also proposed.
  • the device is suitably designed or set up or equipped for carrying out at least steps b) to e) of the method described, and comprises at least a first plate, a second plate and an induction device.
  • the device has a control unit that is set up, equipped, configured or programmed to carry out the method described or at least steps b) to e). At least you can with the control unit
  • the device for laminating is operated or controlled, ie z.
  • B. o operate the induction device; or o the plates are moved towards one another (for pressing the stack) and/or away from one another, in particular with distance and force control; or
  • a battery cell is also proposed, wherein the battery cell comprises, in particular, a housing enclosing a volume and, arranged in the volume, the at least one stack and an electrolyte.
  • the battery cell is in particular a pouch cell (with a deformable housing consisting of a pouch film) or a prismatic cell (with a dimensionally stable housing).
  • a pouch film is a well-known deformable housing part that is used as a housing for so-called pouch cells. It is a composite material, e.g. B. comprising a plastic and aluminum.
  • the battery cell is in particular a lithium-ion battery cell.
  • the individual electrodes are arranged one on top of the other and form the stack.
  • the electrodes are each associated with different types of electrodes, ie they are designed as an anode or a cathode. In this case, anodes and cathodes are arranged alternately and are each separated from one another by the separator material.
  • a battery cell is an electricity storage device that B. is used in a motor vehicle for storing electrical energy.
  • a motor vehicle has an electric machine for driving the motor vehicle (a traction drive), wherein the electric machine can be driven by the electrical energy stored in the battery cell.
  • a motor vehicle at least comprising a traction drive and a battery with at least one of the battery cells described, wherein the traction drive can be supplied with energy by the at least one battery cell.
  • the method can be carried out by or with the participation of a computer or with a processor of a control unit. Accordingly, a system for data processing is also proposed which includes a processor which is adapted/configured in such a way that it carries out the method or part of the steps of the proposed method.
  • a computer-readable storage medium can be provided which comprises instructions which, when executed by a computer/processor, cause the latter to carry out the method or at least part of the steps of the proposed method.
  • the statements on the battery cell method can be transferred in particular to the device for laminating, the battery cell, the motor vehicle, the control unit and the computer-implemented method (i.e. the computer or the processor, the data processing system, the computer-readable storage medium) and vice versa.
  • the computer-implemented method i.e. the computer or the processor, the data processing system, the computer-readable storage medium
  • indefinite articles (“a”, “an”, “an” and “an”), particularly in the claims and the description reflecting them, is to be understood as such and not as a numeral.
  • indefinite articles (“a”, “an”, “an” and “an”), particularly in the claims and the description reflecting them, is to be understood as such and not as a numeral.
  • Correspondingly introduced terms or components are to be understood in such a way that they are present at least once and in particular can also be present several times.
  • first”, “second”, ...) primarily (only) serve to distinguish between several similar objects, sizes or processes, i.e. in particular no dependency and/or sequence of these objects, sizes or make processes mandatory for each other. Should a dependency and/or order be required, this is explicitly stated here or it is obvious to the person skilled in the art when studying the specifically described embodiment. If a component can occur several times (“at least one”), the description of one of these components can apply equally to all or part of the majority of these components, but this is not mandatory.
  • Fig. 2 a detail of the device with the stack of FIG
  • a mono cell comprising an anode coated on one side and a cathode coated on one side, the cathode being arranged in a separator material pocket, in a side view;
  • Fig. 9 a stack with stacked mono cells, the anodes in one
  • Separator material pocket are arranged, in a side view
  • FIG. 1 shows a device 7 for laminating with a stack 6 in a side view.
  • FIG. 2 shows a section of the device 7 with the stack 6 according to FIG. 1 in a side view.
  • Fig. 3 shows a stack 6 formed from n-mono cells, in a side view. 1 to 3 are described together below.
  • the device 7 is suitably designed or set up or equipped for carrying out at least steps b) to e) of the method described and comprises a first plate 8 , a second plate 9 and an induction device 10 .
  • the device 7 also has a control unit 17 . With the control unit 17, the device 7 can be operated or controlled for lamination, ie z. B.
  • the induction device 10 is operated and controlled, and the plates 8, 9 are moved towards one another (for pressing the stack 6) and/or away from one another, in particular in a distance and force-controlled manner.
  • a force measurement can be carried out by means of the control device in order to ensure that the stack is pressed without damage.
  • a device 7 for lamination by means of induction comprising a first plate 8 and a second plate 9 and an induction device 10.
  • the stack 6 of components is arranged between the first plate 8 and the second plate 9.
  • the components include electrodes 2 of a first type of electrode 3, electrodes 2 of a second type of electrode 11 and a separator layer 4, which are arranged one on top of the other along a stacking direction 5 and form a stack 6.
  • the stack 6 is pressed by the plates 8, 9 along the stacking direction 5 with the force 18 (see FIGS. 1 and 2).
  • step d the induction device 10 is operated and the separator layers 4 are heated to form an adhesive connection between each separator layer 4 and the electrode 2 arranged adjacent thereto.
  • step e the heat conduction within the stack 6 starts from each carrier material 13 each electrode 2 shown.
  • step e) the plates 8, 9 are moved apart and in step f) the laminated components are removed from the device 7.
  • the plates 8, 9 of the device 7 are designed in such a way that the mutually contacting surfaces (hereinafter also referred to as contact surfaces) of the stack 6 and plates 8, 9 are each arranged or run parallel to one another.
  • the corresponding surfaces of the plates 8, 9 extend beyond the surfaces of the stack 6 that make contact with these plates 8, 9, and are therefore designed to be larger in terms of surface area.
  • the stack 6 can be pressed together via the plates 8, 9, the aim being to achieve as homogeneous a force distribution as possible, at least in planes that each extend parallel to the contact surfaces.
  • the induction device 10 comprises one or more inductors 16 or induction coils, by which at least parts of the stack 6 can be heated directly.
  • step d the induction device 10 is operated and the separator layer 4 is heated to form an adhesive connection between the separator layer 4 and the electrode 2.
  • the separator layer 4 is not heated directly in the process.
  • Another component of the stack 6, namely the carrier materials 13 of the electrodes 2 (ie not the separator layer 4) is heated by induction.
  • the separator sheet 4 is then heated by conduction from the induction heated component.
  • the stack 6 has a plurality of electrodes 2 of the first type of electrode 3 (e.g. an anode or cathode) and a plurality of electrodes 2 of a second type of electrode 4 (different from the first type of electrode 3) (e.g. a cathode or anode). ) and between the electrodes 2 each have a separator layer 4 .
  • the individual electrodes 2 have a film-like carrier material 13, z. B. from a copper or aluminum material.
  • the carrier material 13 is coated on both sides with an active material.
  • the active materials of different types of electrodes 3 , 11 are separated from one another by the separator material 12 .
  • the respective collector 19 of an electrode 2 is formed by an uncoated area of the carrier material 13 .
  • FIG. 4 shows a stack 6 with a one-piece separator material 12 in a side view. Reference is made to the statements relating to FIGS.
  • a one-piece separator layer 4 extends over all electrodes 2 of the stack 6 in the manner of a Z-fold. All separator layers 4 are connected to one another and the stack 6 has only one separator material 12 made in one piece.
  • Exactly one separator layer 4 extends around the stack 6 and is thus arranged between the stack 6 and the first plate 8 and between the stack 6 and the second plate 9 in steps b) to e). In this way, the stack 6 as a whole can be encompassed by the separator layer 4 and the components can be fixed in their arrangement relative to one another.
  • FIG. 5 shows a carrier material 13 coated on one side with an active material, e.g. B. an anode, in a side view.
  • the electrode 2 has a carrier material 13 and a coating 15 with active material on a side surface 14 of the carrier material 13 .
  • FIG. 6 shows a carrier material 13 coated on both sides with an active material, e.g. B. a cathode, in a side view.
  • an active material e.g. B. a cathode
  • FIG. 7 shows a monocell comprising an anode coated on one side and a cathode coated on one side, the cathode in a separator material designed as a pocket
  • the respective electrode 2 has a carrier material 13 and a coating 15 with active material on a side surface 14 of the carrier material 13 .
  • FIG. 8 shows a side view of a stack 6 with separator material 12 folded in a Z-like manner. Reference is made to the statements relating to FIG.
  • the respective electrode 2 has a carrier material 13 and a coating 15 with active material on both side surfaces 14 of the carrier material 13 .
  • FIG. 9 shows a side view of a stack 6 with stacked monocells, the anodes each being arranged in a pocket made of separator material 12 .
  • the respective electrode 2 has a carrier material 13 and 14 on both side surfaces of the carrier material
  • FIG. 10 shows a plate 8 designed as an inductor 16 in a side view and a plan view. Reference is made to the comments relating to FIGS.
  • FIG. 11 shows a plate 8 with a multiplicity of inductors 16 in a side view and a plan view.
  • the individual inductors 16 can have a control unit 17 z. B. be operated individually, so that the heat input can be controlled by induction depending on the location.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Primary Cells (AREA)
  • Cell Separators (AREA)

Abstract

L'invention concerne un procédé de stratification de composants d'un élément de batterie (1), les composants comprenant au moins une électrode (2) d'un premier type d'électrode (3) et une couche séparatrice (4) qui sont disposées l'une sur l'autre dans une direction d'empilement (5) et forment un empilement (6). L'invention concerne en outre un dispositif de stratification de composants d'un élément de batterie (1).
EP22809738.2A 2021-10-29 2022-10-25 Procédé et dispositif de stratification de composants d'un élément de batterie Pending EP4423845A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021128348.5A DE102021128348A1 (de) 2021-10-29 2021-10-29 Verfahren und Vorrichung zum Laminieren von Komponenten einer Batteriezelle
PCT/EP2022/079801 WO2023072942A2 (fr) 2021-10-29 2022-10-25 Procédé et dispositif de stratification de composants d'un élément de batterie

Publications (1)

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EP4423845A2 true EP4423845A2 (fr) 2024-09-04

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WO2023072942A2 (fr) 2023-05-04
KR102942992B1 (ko) 2026-03-23
KR20240072260A (ko) 2024-05-23
WO2023072942A3 (fr) 2023-07-27
US20260005282A1 (en) 2026-01-01
CN118176621A (zh) 2024-06-11
JP7823978B2 (ja) 2026-03-04
DE102021128348A1 (de) 2023-05-04
CA3236464A1 (fr) 2023-05-04

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