EP4367741A1 - Cellule électrochimique, système électrochimique et procédé de fabrication d'une cellule électrochimique - Google Patents

Cellule électrochimique, système électrochimique et procédé de fabrication d'une cellule électrochimique

Info

Publication number
EP4367741A1
EP4367741A1 EP22738607.5A EP22738607A EP4367741A1 EP 4367741 A1 EP4367741 A1 EP 4367741A1 EP 22738607 A EP22738607 A EP 22738607A EP 4367741 A1 EP4367741 A1 EP 4367741A1
Authority
EP
European Patent Office
Prior art keywords
cell
electrochemical
electrochemical cell
pole
current collector
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
EP22738607.5A
Other languages
German (de)
English (en)
Inventor
Mathias Widmaier
Mathias Scherer
Christian Beck
Elisabeth Reitz
Marcel Kurz
Philipp Rominger
Aldina Aslani
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.)
ElringKlinger AG
Original Assignee
ElringKlinger 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 ElringKlinger AG filed Critical ElringKlinger AG
Publication of EP4367741A1 publication Critical patent/EP4367741A1/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
    • 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
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
    • 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
    • H01M10/0431—Cells with wound or folded 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
    • H01M10/049—Processes for forming or storing electrodes in the battery container
    • 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
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/183—Sealing members
    • 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
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/578—Devices or arrangements for the interruption of current in response to pressure
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/581—Devices or arrangements for the interruption of current in response to temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/20—Pressure-sensitive devices
    • 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

Definitions

  • Electrochemical cell electrochemical system and method of making an electrochemical cell
  • the present invention relates to an electrochemical cell for an electrochemical system.
  • the present invention relates to an electrochemical system comprising one or more electrochemical cells.
  • the present invention further relates to a method of manufacturing an electrochemical cell.
  • Electrochemical cells are known from DE 10 2018 209 270 A1, DE 10 2017 200 390 A1, EP 2 541 650 A1, US 2015/0214516 A1, DE 10 2012 213 871 A1, EP 1 459 882 A1, the US 2018/0097208 A1 and WO 2017/159760 A1 are known.
  • the present invention is based on the object of providing an electrochemical cell which can be produced as simply as possible and has the longest possible service life.
  • the electrochemical cell is preferably a round cell.
  • the electrochemical cell is used in vehicles.
  • the electrochemical cell preferably comprises an electrochemical element for receiving, storing and/or providing electrical energy. It can be advantageous if the electrochemical cell comprises a housing which comprises a cup element for accommodating the electrochemical element and a cover element for covering and/or closing the cup element.
  • the electrochemical cell comprises a first cell pole and a second cell pole for connecting the electrochemical cell to a cell contacting system.
  • the electrochemical cell comprises a casting element, in particular a first casting element, for example for connecting the housing and the first cell pole.
  • the electrochemical cell comprises a casting element, in particular a second casting element, for example for connecting the housing and the second cell pole.
  • a "potting element” is preferably an element that is produced in a casting process and/or a casting process.
  • a potting material for example a resin material, is preferably filled in a flowable state into an area to be filled.
  • the first cell pole is designed as a cathode.
  • the second cell pole is designed as an anode, for example.
  • the first casting element preferably forms a first connecting element. Additionally or alternatively, the first casting element preferably forms a first sealing element for sealing an area formed between the cup element and the first cell pole. It can be favorable if the second casting element forms a second connection element. In addition or as an alternative, the second casting element preferably forms a second sealing element for sealing off an area formed between the cover element and the second cell pole.
  • the first casting element and/or the second casting element preferably serve to seal an interior of the electrochemical cell surrounded by the housing.
  • the cup element comprises or is formed from a metallic material.
  • the cup member includes or is formed from steel.
  • the cup member is formed from nickel plated steel.
  • the cup element comprises aluminum or is formed from it.
  • cup element is at the potential of the second cell pole.
  • the cup element is at the potential of the first cell pole.
  • the cup element is at least approximately in the form of a hollow cylinder.
  • one end of the hollow cylinder is closed by a base section and/or bottom section of the cup element.
  • the cup element has a casing section which is preferably at least approximately in the form of a hollow cylinder, for example at least approximately in the form of a circular hollow cylinder. Provision can be made for the cup element to have a base section which, for example, is at least approximately circular. For example, the base section closes the cup element in an assembled state of the electrochemical cell on a side of the cup element facing away from the second cell pole.
  • the base portion is a bottom portion, for example.
  • the electrochemical cell comprises a first current collector element, which comprises at least one first connection element for connecting the first current collector element to the first cell pole and/or for making electrical contact between the electrochemical element and the first cell pole, with the at least one first connection element is designed in the form of a bulge pointing in the direction of the first cell pole and/or in the form of a projection pointing in the direction of the first cell pole.
  • the at least one first connection element is preferably connected to the first cell pole in a material-to-material and/or form-fitting and/or non-positive manner, for example by welding.
  • the at least one first connection element of the first current collector element is a cup-shaped and/or cup-shaped area of the current collector element.
  • the first current collector element is mostly plate-shaped, for example over approximately 90% of the area or more.
  • the first current collector element is a current collector plate.
  • a preferably fluid-tight welded connection is formed from a side of the first cell pole that faces away from the first current collector element.
  • the first connection element is fixed to the first cell pole by welding through from a side facing away from the first cell pole.
  • the electrochemical cell comprises a second current collector element, which comprises at least one second connection element for connecting the second current collector element to the second cell pole and/or for making electrical contact between the electrochemical element and the second cell pole.
  • the at least one second connection element is preferably designed in the form of a bulge pointing in the direction of the second cell pole and/or in the form of a projection pointing in the direction of the second cell pole.
  • the at least one second connection element is connected to the second cell pole in a material-to-material and/or form-fitting and/or force-fitting manner, for example by welding.
  • the second current collector element preferably has a second bend, for example by approximately 90°.
  • a second current collector element has a first and/or a second bend
  • one end of the second current collector element is guided through an opening provided for this purpose in the second cell pole and is materially connected to the second cell pole within the opening.
  • the second cell pole and the at least one second connection element can be formed at least partially from metallic materials which are different from one another.
  • the second cell pole is multi-part and includes a first part, which includes or is formed from copper.
  • the second cell pole comprises a second part, which comprises or is formed from aluminum, for example.
  • the at least one second connection element preferably comprises copper or is formed from it.
  • a material transition is formed within the second cell pole or between the at least one second connection element and the second cell pole.
  • a connection area is formed, for example, in which the second cell pole is connected to the at least one second connection element.
  • connection area of the second cell pole is formed, for example, from the same material as the at least one second connection element of the second current collector element.
  • the second cell pole and the at least one second connection element can be formed from the same metallic material.
  • the second cell pole and the at least one second connection element include copper or are formed from it.
  • the electrochemical cell has a second current collector element whose plate-shaped base body and/or whose edge area is connected directly to the housing, wherein preferably the second current collector element is connected to the cover element and the cup element, for example by a joint connection.
  • the second current collector element is and/or is connected to the cover element and/or the cup element by crimping.
  • the cup element has at least one indentation, for example a bead running in the circumferential direction of the cup element, on an end facing away from the base section.
  • the second current collector element is connected to the second cell pole by welding, for example by welding through.
  • the second current collector element is preferably arranged at a distance from the cover element.
  • the second current collector element is connected to the second cell pole by a second connection element of the second current collector element.
  • the second connection element of the second current collector element is a bowl-shaped and/or cup-shaped area of the second current collector element.
  • the second current collector element is mostly plate-shaped, for example over approximately 90% of the area or more.
  • the second current collector element is a current collector plate. It can be advantageous if a preferably fluid-tight welded connection is formed from a side of the first cell pole that faces away from the first current collector element.
  • the first connection element is fixed to the first cell pole by welding through from a side facing away from the first cell pole.
  • an insulating element for example a second insulating element, is arranged on an inside of the cover element facing the interior space, which is used for electrical insulation of the cover element.
  • cover element and the cup element are connected to one another in a materially integral and/or force-fitting and/or form-fitting manner.
  • the cover element and the cup element are preferably welded to one another, for example connected to one another by welding through.
  • the first current collector element is connected to the cup element by means of a weld seam, in particular a fluid-tight one.
  • the cup element is in particular at the potential of the first cell pole and/or forms part of the first cell pole.
  • a first insulating element is preferably not required.
  • the second current collector element may be connected to the cover element by means of a weld seam, in particular a fluid-tight weld seam.
  • the at least one first attachment element and/or the at least one second attachment element preferably form a tolerance compensation.
  • the at least one first connection element is preferably in direct physical contact with the first cell pole.
  • the at least one first connection element is materially connected to the first cell pole.
  • the at least one second connection element is in direct material contact with the second cell pole when the electrochemical cell is in the assembled state.
  • the at least one second attachment element is materially connected to the second cell pole.
  • the at least one second connection element is formed by bending and/or cutting out, for example punching out.
  • the electrochemical cell has a first insulating element, which forms an electrical separation and/or electrical insulation between the first cell pole and the cup element.
  • the electrochemical cell has a second insulating element, which forms an electrical separation and/or an electrical insulation between the second cell pole and the cover element.
  • the first insulating element preferably serves to electrically insulate the first cell pole.
  • the first insulating element is arranged on an inside of the base section and/or bottom section of the cup element.
  • the first insulating element is designed in several parts, for example in two parts.
  • the insulating element has an at least approximately circular cross section.
  • the cross section is preferably taken at least approximately perpendicularly to a central axis of the electrochemical cell.
  • the central axis of the electrochemical cell is preferably parallel to an axis of symmetry of the electrochemical cell and/or at least approximately perpendicular to a main plane of extent of the cover element and/or the base section of the cup element.
  • the first insulating element has a recess, for example in the middle, in which the first cell pole is accommodated and/or arranged when the electrochemical cell is in an assembled state.
  • the recess of the first insulating element is preferably at least approximately rectangular in cross-section taken parallel to the main extension plane of the first insulating element.
  • the first cell pole is designed at least approximately complementary to the recess of the first insulating element in a cross section taken parallel to the main extension plane of the first cell pole.
  • the first cell pole and the recess of the first insulating element are at least approximately rectangular or at least approximately oval and/or round in a cross section taken perpendicular to the central axis of the electrochemical element.
  • the first cell pole and/or the recess of the first insulating element are preferably rectangular in cross section with rounded corners.
  • the first insulating element has one or more indentations, which are formed circumferentially around the recess are.
  • the one or more indentations are preferably channel-shaped indentations and/or beads.
  • the first insulating element has a first depression and a second depression, which are arranged concentrically in a cross section taken parallel to the main plane of extension of the first insulating element.
  • the first indentation serves in particular to position the first cell pole in the recess of the first insulating element during production of the electrochemical cell.
  • the second depression preferably serves to position the first insulating element relative to the cover element during manufacture of the electrochemical cell.
  • the electrochemical cell has a second insulating element.
  • the second insulating element preferably serves to electrically insulate the second cell pole or to electrically insulate the first cell pole and the second cell pole.
  • the second insulating element is arranged on an inside of the cover element that faces the interior of the electrochemical cell.
  • the second insulating element is designed in several parts, for example in two parts.
  • the second insulating element has an at least approximately circular cross section.
  • the cross-section is preferably taken at least approximately perpendicular to a central axis of the electrochemical cell.
  • the second insulating element for example in the middle, has a recess in which, in an assembled state, the electrochemical cell of the second cell pole or the first cell pole and the second cell pole is added and / or arranged.
  • the recess of the second insulating element is preferably at least approximately rectangular in shape in a plane taken parallel to the main extension plane of the second insulating element.
  • the second cell pole is formed at least approximately complementary to the recess of the second insulating element in a cross section taken parallel to the main extension plane.
  • the second cell pole and the recess of the second insulating element are at least approximately rectangular or at least approximately oval and/or round in a cross section taken perpendicular to the central axis of the electrochemical cell.
  • the second cell pole and/or the recess of the second insulating element is preferably rectangular in cross-section with rounded corners.
  • the second insulating element has one or more indentations which are formed circumferentially around the recess.
  • the one or more indentations are preferably channel-shaped indentations and/or beads.
  • the second insulating element has a first depression and a second depression, which are arranged concentrically in a cross section taken parallel to the main plane of extension of the second insulating element.
  • the first indentation serves in particular to position the second cell pole or the first cell pole and the second cell pole in the recess of the second insulating element during production of the electrochemical cell.
  • the second depression preferably serves to position the second insulating element relative to the cover element during manufacture of the electrochemical cell.
  • first casting element comprises or is formed from a first polymer material and/or that the second casting element comprises or is formed from a second polymer material.
  • the first insulating member preferably includes or is formed from a third polymeric material.
  • the second insulating element comprises or is formed from a fourth polymer material.
  • the third polymeric material and/or the fourth polymeric material are preferably thermoplastic polymeric materials, in particular electrolyte-resistant thermoplastic polymeric materials.
  • the third polymer material and/or the fourth polymer material are, for example, a polymer material that can be processed in an injection molding process.
  • the third polymer material and/or the fourth polymer material comprise one or more of the following materials or are formed from them: polyethylene terephthalate, polyethylene, polypropylene, polybutylene terephthalate.
  • the third polymer material and/or the fourth polymer material are preferably electrically insulating.
  • Electrode conductive means in particular an electrical conductivity at 25° C. of 10 1 S/m or more, in particular 10 6 S/m or more.
  • Electrical insulating means in particular an electrical conductivity at 25° C. of less than 10 1 S/m, in particular less than 10 6 S/m.
  • the first casting element preferably comprises or is formed from a first polymer material.
  • the first polymeric material includes or is formed from a first resin material.
  • the first resin material comprises or is formed from one or more of the following materials: epoxy resin material, phenolic resin material, aminoplast material, polyurethane material, silicone material, polyester resin material, ABS resin material.
  • the first resin material has a hardness of approximately 40 Shore D or more, in particular approximately 50 Shore D, for example approximately 60 Shore D or more, in a cured state relative to the first polymer material.
  • the hardness of the first resin material in a cured state to the first polymeric material is about 100 Shore D or less, more preferably about 97 Shore D or less, for example about 95 Shore D or less.
  • the hardness is determined according to DIN EN ISO 868 in particular.
  • the first resin material has a glass transition temperature of approx. 90° C. or more, in particular approx. 95° C. or more, for example approx. 100° C. or more.
  • the glass transition temperature is preferably related to a cured state of the first resin material to the first polymer material.
  • the first resin material is a one-part resin material, for example a one-part epoxy resin material.
  • One-component epoxy resin materials preferably have increased stability compared to an electrolyte that is accommodated in the interior.
  • the first resin material comprises one or more fillers.
  • the one or more fillers are preferably selected from: inorganic fillers, in particular silicon oxide, carbonate, carbide, in particular silicon carbide, nitride, in particular metal nitride, metal oxide.
  • Preferred silicon oxides are silicates.
  • the second casting element comprises or is formed from a second polymer material.
  • the second polymeric material includes or is formed from a second resin material.
  • the second resin material comprises or is formed from one or more of the following materials: epoxy resin material, phenolic resin material, aminoplast material, polyurethane material, silicone material, polyester resin material, ABS resin material.
  • the second resin material has a hardness of about 40 Shore D or more, in particular about 50 Shore D, for example about 60 Shore D or more, in a cured state compared to the second polymer material.
  • the hardness of the second resin material in a cured state to the second polymeric material is about 100 Shore D or less, more preferably about 97 Shore D or less, for example about 95 Shore D or less.
  • the hardness is determined according to DIN EN ISO 868 in particular.
  • the second resin material has a glass transition temperature of approx. 90° C. or more, in particular approx. 95° C. or more, for example approx. 100° C. or more.
  • the glass transition temperature is preferably related to a cured state of the second resin material to the second polymeric material.
  • the second resin material is a one-part resin material, for example a one-part epoxy resin material.
  • One-component epoxy resin materials preferably have increased stability compared to an electrolyte that is accommodated in the interior.
  • the second resin material comprises one or more fillers.
  • the one or more fillers are preferably selected from: inorganic fillers, in particular silicon oxide, carbonate, carbide, in particular silicon carbide, nitride, in particular metal nitride, metal oxide.
  • Preferred silicon oxides are silicates.
  • the first polymer material and the second polymer material are chemically and/or physically different materials.
  • first polymer material and the second polymer material are chemically and/or physically identical materials.
  • third polymer material differs chemically and/or physically from the first polymer material and/or from the second polymer material.
  • the third polymeric material can correspond chemically and/or physically to the first polymeric material and/or the second polymeric material.
  • the first casting element is arranged in radial directions with respect to a central axis of the electrochemical cell between the first cell pole and the cup element and/or that the second casting element is arranged in radial directions with respect to the central axis of the electrochemical cell between the second cell pole and the Lid element is arranged.
  • the first casting element forms an annular section between the first cell pole and the cup element, viewed from a side of the cup element facing the cover element.
  • the second casting element prefferably to form an annular section between the first cell pole and the cup element on an outside of the cover element facing the interior.
  • the cover element and/or the cup element comprises a bursting device which has a bursting bar which is designed in such a way that it breaks and/or tears when a critical pressure in the interior of the electrochemical cell is exceeded.
  • a bursting device can be arranged and/or formed in a bottom area of the cup element.
  • the bursting bar is formed by a linear area of reduced material thickness and/or by two sides of the cover element and/or of the cup element in the cover element or in the cup element introduced recesses, such as embossing formed.
  • the bursting device has a flat area of reduced material thickness compared to the average material thickness of the cover element and/or the cup element.
  • the cover element and/or the cup element has an electrolyte filling opening for filling electrolyte into the interior of the electrochemical cell and/or for removing electrolyte from the interior of the electrochemical cell.
  • an electrolyte filling opening can be arranged and/or formed in a bottom area of the cup element.
  • the electrolyte filling opening is preferably closed, for example welded, after the interior of the electrochemical cell has been filled.
  • the second insulating element has an electrolyte filling opening.
  • the cover element has one or more elevations which protrude away from a base body of the cover element in a direction pointing away from the interior, the one or more elevations preferably delimiting an opening for receiving the second casting element.
  • the one or more elevations serve in particular to increase the level when the second potting material is filled in.
  • the one or more elevations are formed by beads.
  • the second cell pole has one or more radial projections, which extend along radial directions with respect to the central axis of the electrochemical cell.
  • the second Cell pole on a single projection, which is formed circumferentially around a base body of the second cell pole. In this way, the second casting element can mechanically latch onto the second cell pole.
  • the second cell pole is embossed and/or has one or more radial projections running in the radial direction.
  • the one or more radial projections serve in particular to increase the level of a second resin material.
  • the cover element has one or more recesses in which the second casting element engages behind the cover element in a mounted state of the electrochemical cell along a direction running parallel to the central axis.
  • the electrochemical cell for example the second cell pole, to comprise at least one snap-over element which can be deflected outwards from a rest state to a released state when a critical pressure and/or a critical temperature in the interior of the electrochemical cell is exceeded and/or is deflected.
  • an electrical contact between the second cell pole and a second current collector element is interrupted and/or separated.
  • the at least one snap-over element is preferably formed by the second cell pole as a whole.
  • the at least one snap element can be welded into the second cell pole of the electrochemical cell, for example.
  • the at least one snap-over element is deflected outwards at a predetermined internal cell pressure and thereby interrupts an electrically conductive connection between the second cell pole and the second current collector element.
  • the increased internal cell pressure is caused in particular by electrochemical processes and by the heat generated when the electrochemical cell is overcharged.
  • first cell pole and/or the second cell pole have an area of reduced material thickness, which serves in particular to facilitate the ability to connect the respective cell pole to the respective current collector element.
  • the area or areas of reduced material thickness are preferably embossed areas.
  • the respective cell pole preferably has a reduced penetration depth.
  • the second cell pole preferably has a plurality of functional areas which are separated from one another by the second casting element, with the plurality of functional areas preferably being separated from one another by one or more, in particular peripheral, elevations, for example beads, or with the plurality of functional areas themselves relative to a base body are designed as elevations and / or plateaus.
  • the electrochemical cell comprises a single casting element, which accommodates and/or surrounds the second cell pole or the first cell pole and the second cell pole.
  • the electrochemical element is on a side facing the base section of the cup element, in particular exclusively, connected by a first insulating element to the cup element.
  • the cup element as a whole lies at the potential of the first cell pole.
  • the first current collector element is preferably pressed into and/or pressed with the cup element.
  • the electrochemical element is electrically insulated from the cup element by a first insulating element.
  • the first cell pole and the second cell pole are arranged, for example, on the same side of the electrochemical cell and/or are anchored in the same casting element.
  • the first current collector element and the second current collector element are arranged on the same side of the electrochemical cell and/or on the same side as the cell poles.
  • both the first cell pole and the second cell pole are preferably arranged in the same opening of the cover element.
  • first cell pole and the second cell pole are separated from one another by the casting element and/or kept at a distance from the cover element.
  • the electrochemical cell includes a second insulating element, which includes a first recess for the first cell pole and a first recess for the second cell pole.
  • first recess and/or the second recess are of one or more depressions, for example one or more beading, surrounded.
  • the wells are used for positioning in the cover element.
  • the electrochemical cell has one or more spacer elements.
  • the one or one or more of the spacer elements is arranged, for example, between the cover element and the first cell pole. Additionally or alternatively, for example, one or more of the spacer elements is arranged between the cover element and the second cell pole.
  • the first current collector element of the electrochemical cell is connected to the cup element by a first spring element, for example by a spring washer.
  • the first connection element is formed by the first spring element.
  • the first spring element includes or is formed from aluminum.
  • the second current collector element is connected to the cover element and/or the second cell pole by a second spring element, for example a spring washer.
  • the second connection element is formed by the second spring element.
  • the second spring element includes, for example, copper or is formed from it.
  • a non-positive connection of the respective current collector element to the corresponding cell pole is formed, for example.
  • the second current collector element has an electrically conductive and/or electrolyte-resistant coating.
  • a frictional connection is preferably achieved by pressing the first current collector element into the cup element educated.
  • the electrically conductive and/or electrolyte resistant coating comprises or is formed from an electrically conductive fluoropolymer material or a synthetic rubber material.
  • compositions are suitable as material for the electrically conductive and/or electrolyte-resistant coating: al) a resin material and one or more electrically conductive additives, for example an epoxy resin material and one or more conductive carbon blacks; a2) an elastomeric material and a transition metal carbide, and optionally one or more electrically conductive additives, for example ethylene-propylene-diene rubber or styrene-butadiene rubber and titanium carbide; a3) an electrically conductive adhesive material, preferably an elastomeric material, a resin material, one or more electrically conductive additives and optionally a transition metal oxide, for example ethylene-propylene-diene rubber or styrene-butadiene rubber, an epoxy resin material, conductive carbon black and optionally titanium carbide ; a4) an electrically conductive thermoplastic material, in particular a
  • Thermoplastic material one or more electrically conductive additives and a transition metal oxide, for example polyvinylidene fluoride or poly tetrafluoroethylene and conductive carbon black and titanium carbide; a5) an electrically conductive paste, for example comprising styrene-butadiene rubber, carboxymethyl cellulose, titanium carbide, where a fluoropolymer suspension can optionally be used.
  • a transition metal oxide for example polyvinylidene fluoride or poly tetrafluoroethylene and conductive carbon black and titanium carbide
  • an electrically conductive paste for example comprising styrene-butadiene rubber, carboxymethyl cellulose, titanium carbide, where a fluoropolymer suspension can optionally be used.
  • the electrochemical element is at least approximately in the form of a hollow cylinder and/or has a hollow space parallel to the central axis of the electrochemical cell.
  • the present invention also relates to an electrochemical system which has one or more electrochemical cells according to the invention.
  • One or more features and/or advantages of the electrochemical cell according to the invention preferably apply equally to the electrochemical system according to the invention.
  • the invention also relates to a method for producing an electrochemical cell.
  • the invention is based on the object of providing a method by means of which an electrochemical cell can be produced as simply as possible.
  • the method according to the invention is preferably a method for producing an electrochemical cell according to the invention.
  • An electrochemical element for receiving, storing and/or providing electrical energy is preferably provided or manufactured.
  • the electrochemical element is positioned in a housing, which comprises a cup element for accommodating the electrochemical element and a cover element for covering and/or closing the cup element.
  • a casting element in particular a first casting element, is preferably produced, for example for connecting the cup element to a first cell pole.
  • a casting element in particular a second casting element, is produced, for example for connecting the cover element to a second cell pole.
  • One or more features and/or advantages of the electrochemical cell according to the invention preferably apply equally to the method according to the invention.
  • the cup element is then positioned in such a way that the first insulating element is positioned and/or rests against an inner side of the cup element that faces an interior space.
  • a first polymer material in a free-flowing state is filled into an area between the first cell pole and the cup element.
  • the first polymer material is then preferably cured and/or dried.
  • the one or more first contacting projections and/or second contacting projections protrude, for example, beyond the base body of the electrochemical element and/or protrude away from the base body.
  • the electrochemical element includes one or more first contact projections for making electrical contact between the electrochemical element and the first cell pole.
  • the one or more first contact projections project away from the base body of the electrochemical element on a side of the electrochemical element that faces the first cell pole in a mounted state.
  • the one or more first contact projections are, for example, lamellar and/or tab-shaped.
  • the electrochemical element comprises one or more second contact projections for making electrical contact between the electrochemical element and the second cell pole.
  • the one or more second contacting projections protrude away from the main body of the electrochemical element on a side of the electrochemical element that faces away from the first cell pole in a mounted state.
  • the one or more second contact projections are, for example, lamellar and/or tab-shaped.
  • the one or more first contact projections and/or the one or more second contact projections are uncoated, for example. It can be advantageous if the one or more first contacting projections are connected to a first current collector element, for example welded.
  • the one or more second contacting projections are preferably connected to the second current collector element, for example welded.
  • the one or more first contact projections are and/or are formed from an uncoated cathode substrate, for example aluminum.
  • the one or more second contact projections are and/or are formed by an uncoated anode substrate, for example copper.
  • the electrochemical element is inserted into the cup element and that a first current collector element of the electrochemical cell is then connected to the first cell pole, for example welded.
  • the cover element is arranged on a second current collector element and the cup element is connected to the cover element and the second current collector element by joining, for example by crimping.
  • a second insulating element, the cover element and the second cell pole are stacked before they are cast together with a first resin material and/or a second resin material in a flowable state.
  • the first polymeric material and/or the second polymeric material is then dried and/or allowed to harden, forming the potting element.
  • the electrochemical element it is conceivable for the electrochemical element to be produced by winding it onto and/or around a winding device, for example a winding mandrel, whereby in particular a hollow space is formed parallel to the central axis of the electrochemical cell.
  • a winding device for example a winding mandrel
  • the winding device is preferably removed from the electrochemical element, in particular the cell coil, after winding and/or before further assembly.
  • a cover element assembly which in particular comprises or is formed from the following elements: the cover element; the second cell pole; the second potting element; and the second insulating member.
  • the cover element assembly is connected to the electrochemical element, which is connected to the first current collector element and/or the second current collector element.
  • the cover element assembly is preferably welded to the second current collector element, for example by laser welding and/or resistance welding.
  • a long rod-shaped electrode is preferably used.
  • welding is carried out through the cavity formed by the winding of the electrochemical element.
  • the first current collector element has an opening through which a laser beam can be passed.
  • the cup element has a through-opening on its bottom section, through which welding takes place.
  • the passage opening is then in particular closed, for example welded.
  • a cell winding cover element assembly resulting therefrom is preferably inserted into the cup element and its position is adjusted. Electrolyte is then preferably filled into the interior of the resulting electrochemical cell through the electrolyte filling opening and the electrolyte filling opening is then closed in a fluid-tight manner, for example by welding.
  • the cup element has an electrolyte filling opening on a bottom section facing away from the cover element.
  • the electrolyte is filled element through the opening in the first current collector.
  • the electrolyte filling opening is preferably arranged in the cover element and the interior space is filled with electrolyte from there.
  • a second insulating element preferably accommodates the entire second current collector element.
  • the second insulating element is, for example, at least approximately pot-shaped and/or disk-shaped.
  • the cover element assembly can preferably be easily placed or plugged onto a cup element, with the second insulating element preferably being pushed together with the second current collector element into an open end of the cup element, in particular until the open end of the cup element is attached to a cover element of the cover element assembly, in particular to a cover plate System comes and hereby ver connected, for example, stuck, welded, etc., can be.
  • a side of the second current collector element which faces the electrochemical element preferably comprises a plurality of elevations, for example five, which are elevated in the direction of the electrochemical element.
  • the elevations are in particular beads.
  • the elevations extend in particular in a star shape outwards in the radial direction.
  • the ridges form weld areas for welding to the electrochemical element.
  • a side of the first current collector element which faces the electrochemical element preferably comprises a plurality of elevations, for example three, which are elevated in the direction of the electrochemical element.
  • the elevations are in particular beads.
  • the elevations extend in particular in a star shape outwards in the radial direction.
  • the ridges form weld areas for welding to the electrochemical element.
  • the first current collector element preferably comprises one or more openings, for example slots or slots.
  • the one or more openings extend in particular in the radial direction and/or are arranged and/or formed in a uniformly distributed manner in the circumferential direction.
  • elevations and openings are arranged and/or formed in an alternating manner.
  • an optimized behavior of the electrochemical cell for degassing and/or in the event of a thermal event can be achieved through the openings.
  • a gas forming between the layers of the electrochemical element can be easily discharged through the openings.
  • a filling opening is provided in the middle, for example, which is surrounded by a peripheral embossing, for example, in order to be able to be welded tightly in a simple manner using a metal plate, for example.
  • one or more bursting devices are optionally provided and/or formed in the base sections.
  • attachment areas are preferably provided for attaching a (first) current collector element.
  • the (first) current collector element to be clamped firmly to the base section or welded all around in an edge region.
  • the bursting bar is, for example, configured in the form of a circular ring.
  • an inwardly protruding elevation can be provided, which is in particular circular and is used for welding to the (first) current collector element.
  • a circular ring-shaped bursting bar is preferably arranged and/or formed in the base section in the radial direction within the elevation.
  • two bursting devices can be provided, which are each arranged and/or formed, for example, in a substantially semicircular shape around the filling opening.
  • Between the two bursting devices are, for example, substantially radially externally aligned, web-like elevations are arranged and/or formed, which protrude into the interior and/or are used for welding to the (first) current collector element.
  • the elevations are preferably positioned so that the weld does not impair the function of the bursting devices.
  • FIG. 1 shows a schematic sectional view of a first embodiment of an electrochemical cell, in which a first cell pole is fixed to a housing by means of a first casting element, with a second cell pole being formed by the housing;
  • FIG. 2 shows a schematic sectional illustration of the cup element, a first insulating element, the first cell pole and the first casting element from FIG. 1 , the cup element having a circumferential bead in a region which is adjacent to an edge of the cup element;
  • Fig. 3 is a schematic plan view of the elements of Fig. 2 along a direction indicated III in Fig. 2 (seen from above);
  • Fig. 4 is a schematic plan view of the elements of Fig. 2 along a direction indicated IV in Fig. 2 (seen from below);
  • Fig. 5 is a schematic plan view of a cover element of the
  • FIG. 6 shows a schematic plan view of a first current collector element from FIG. 1, which has a cup-shaped first connection element for connection to the first cell pole (seen from above);
  • FIG. 7 shows a schematic plan view of the first insulating element of the first embodiment along a direction denoted by IV in FIG. 2, the first insulating element having two peripheral beads;
  • FIG. 8 shows a schematic representation of a method for producing a cup element assembly, comprising the cup element, the first insulating element, the first potting element and the first cell pole according to the first embodiment of the electrochemical cell;
  • Fig. 9 is a schematic representation of an embodiment of a
  • FIG. 10 shows a schematic sectional illustration of a further embodiment of an electrochemical cell, in which the second cell pole is in the form of a second cell terminal and which comprises a second casting element, by means of in which the second cell pole is fixed to a second insulating element and/or to the cover element;
  • FIG. 11 is an enlarged view of that labeled XI in FIG.
  • FIG. 12 is an enlarged representation of the area denoted by XII in FIG. 10;
  • Fig. 13 is a schematic sectional view of the electrochemical
  • FIG. 14 shows a schematic plan view of the cover element, the second casting element and the second cell pole from FIG. 13 along a direction denoted by XIV in FIGS. 10 and 13 (seen from above);
  • FIG. 15 shows a schematic sectional view of the area denoted by XV in FIG. 13 along a plane denoted by XV in FIG. 14;
  • Fig. 16 shows a schematic top view of a cover element assembly of a further embodiment of an electrochemical cell, in which the cover element has a bead running around an opening, the bead serving to optimize the mechanical stability of the cover element assembly, the cover element assembly comprising a cover element second potting element and a second cell pole;
  • Fig. 17 is a schematic sectional view along a in Fig. 16 with
  • FIG. 18 shows a schematic sectional view of a section of a further embodiment of an electrochemical cell, in which the second cell pole is designed as a snap-over element, which is released when a critical pressure and/or a critical temperature in the interior of the electrochemical cell is exceeded state can be deflected outwards and/or is deflected in the opposite direction, thus interrupting and/or separating electrical contact between the second cell pole and the second current collector element, with the idle state being shown in FIG. 18;
  • FIG. 19 is a schematic sectional view of the embodiment of an electrochemical cell shown in FIG. 18 in a triggered state of the snap-over element, in which the second cell pole and the electrochemical element are electrically isolated from one another;
  • FIGS. 20 shows a schematic plan view of the second cell pole from FIGS.
  • FIG. 21 shows a schematic sectional illustration of a section of a further embodiment of an electrochemical cell, in which the second cell pole has an area of reduced material thickness;
  • FIG. 22 shows a schematic plan view of a variant of a current collector element which has a connection element which is formed by a cut-out contour
  • FIG. 23 shows a schematic sectional illustration of the current collector element from FIG. 22;
  • Fig. 24 is a schematic plan view of a further variant of a
  • connection element in which the connection element is connected to a base body of the current collector element via a U-shaped curved section;
  • FIG. 25 shows a schematic sectional illustration of the current collector element from FIG. 24;
  • Fig. 26 is a schematic plan view of a further variant of a
  • connection element in which the connection element is cup-shaped and/or cup-shaped, the current collector element being in particular free of openings and/or forming a closed surface;
  • FIG. 27 shows a schematic sectional illustration of the current collector element from FIG. 26;
  • FIG. 28 shows a schematic sectional illustration of a further embodiment of an electrochemical cell, in which the second cell pole is formed in at least two parts, with at least two parts of the second cell pole being formed from different metallic materials;
  • FIG. 29 shows an enlarged view of the area labeled XXIX in FIG. 28;
  • FIG. 30 shows an enlarged view of the area labeled XXX in FIG. 28;
  • Fig. 31 shows a schematic plan view of the cover element from Fig.
  • FIG. 28 shows a schematic plan view of a further embodiment of an electrochemical cell in which the second cell pole has a plurality of elevations designed as plateaus;
  • FIG. 33 shows a schematic sectional illustration through one shown in FIG.
  • FIG. 34 shows a schematic sectional illustration of a further embodiment of an electrochemical cell in which the first current collector element is pressed into the cup element;
  • FIG. 35 shows an enlarged view of the area labeled XXXV in FIG. 34;
  • FIG. 36 shows an enlarged view of the area labeled XXXVI in FIG. 34;
  • FIG. 37 shows a schematic sectional illustration of a further embodiment of an electrochemical cell, in which the first cell pole and the second cell pole are accommodated in a common casting element;
  • FIG. 38 is an enlarged view of the area labeled XXXVIII in FIG. 37;
  • Fig. 39 is a schematic plan view of the electrochemical cell of Figs. 37 and 38 taken along a direction indicated by XXXIX in Fig. 37;
  • FIG. 40 shows a schematic plan view of the second insulating element of FIG.
  • Fig. 42 is a schematic representation of an embodiment of a
  • FIG 43 is a schematic sectional view of another embodiment of an electrochemical cell in which the second current collector element has a bend of approximately 180° and a further bend of approximately 90°;
  • FIG. 44 shows an enlarged view of the area labeled XLIV in FIG. 43;
  • FIG. 45 is a schematic plan view of the second current collector element of FIGS. 43 and 44 in a state before bending;
  • Fig. 46 shows an embodiment of a method for
  • connection element 47 shows a schematic sectional illustration of a further embodiment of an electrochemical cell, in which the first connection element and/or the second connection element are spring washers, as a result of which in particular a non-positive connection is formed in each case;
  • FIG. 48 is a schematic sectional view of another embodiment of an electrochemical cell, in which a Contact is formed by means of an electrically conductive and/or electrolyte-resistant coating on the first current collector element and/or on the second current collector element;
  • 49 shows a schematic sectional illustration of a further embodiment of an electrochemical cell in which a cell inside is welded via a cavity formed by a winding device;
  • FIG. 50 is an enlarged view of that labeled L in FIG. 50
  • FIG. 51 is an enlarged view of that labeled LI in FIG.
  • Fig. 52 is a schematic representation of an embodiment of a
  • FIG. 53 shows a schematic sectional illustration of a further embodiment of an electrochemical cell in which a cell inner side is welded via a cavity formed by a winding device and a passage opening in the cup element;
  • FIG. 54 is an enlarged view of the area labeled LIV in FIG. 53;
  • FIG. 55 is an enlarged view of that labeled LV in FIG.
  • Fig. 56 is a schematic representation of an embodiment of a
  • Fig. 58 is a schematic side view of the lid member assembly of Fig. 57;
  • Fig. 59 is a schematic perspective view of the
  • Lid member assembly of Figure 57 looking at its underside
  • 60 shows a schematic plan view of a current collector element
  • FIG. 1 to 9 show a first embodiment of an electrochemical cell denoted as a whole by 100, its production and individual components of the electrochemical cell 100.
  • FIG. 1 to 9 show a first embodiment of an electrochemical cell denoted as a whole by 100, its production and individual components of the electrochemical cell 100.
  • the electrochemical cell 100 is, for example, a battery cell and/or an accumulator cell. In the present case, the electrochemical cell 100 is a round cell.
  • the electrochemical cell 100 is a lithium ion cell.
  • the electrochemical cell 100 preferably forms part of an electrochemical system 102 which, in particular, comprises a plurality of electrochemical cells 100 .
  • the electrochemical system 102 is, for example, an accumulator module and/or a battery module.
  • the electrochemical cell 100 is used in a vehicle.
  • the electrochemical cell 100 includes an electrochemical element 104, which is used to receive, store and/or provide electrical energy.
  • the electrochemical element 104 is, for example, a so-called "cell coil”.
  • the electrochemical element 104 is and/or is formed by winding it around a winding device, for example a winding mandrel.
  • the electrochemical element 104 is preferably at least approximately in the form of a hollow cylinder, in particular due to the winding.
  • the electrochemical element 104 parallel to the central axis 132 of the electrochemical cell 100 has a cavity (not shown in the drawing).
  • the electrochemical cell 100 comprises a housing 106 which comprises a cup element 108 for accommodating the electrochemical element 104 and a cover element 110 for covering and/or closing the cup element 108 .
  • Cup element 108 is preferably at least approximately cylindrical in shape, in particular having an at least approximately hollow-cylindrical casing section 112 and a casing section 112 bottom section 114 and/or base section closing on one side.
  • the cup element 108 On a side of the cup element 108 facing away from the base section 114 , the cup element 108 is preferably closed by the cover element 110 .
  • the cup element 108 and the cover element 110 are connected to one another in a fluid-tight manner by a joining method, for example crimping.
  • a joining method for example crimping.
  • an interior 116 of the electrochemical cell 100 is surrounded by the housing 106 in a fluid-tight manner.
  • the electrochemical cell 100 also includes a first cell pole 118, for example a first cell terminal, and a second cell pole 120 for connecting the electrochemical cell 100 to a cell contact system (not shown in the drawing).
  • a first cell pole 118 for example a first cell terminal
  • a second cell pole 120 for connecting the electrochemical cell 100 to a cell contact system (not shown in the drawing).
  • the first cell pole 118 is designed as a cathode.
  • the second cell pole 120 is designed as an anode, for example.
  • the cup element 108 is at anode potential.
  • cup element 108 and/or the cover element 110 comprise or are formed from a metallic material.
  • the cup member 108 includes or is formed from a steel material.
  • cup member 108 includes or is formed from nickel-plated steel.
  • the electrochemical cell 100 preferably comprises a first current collector element 122 which serves in particular to make electrical contact between the electrochemical element 104 and the first cell pole 118 . It can be favorable if the first current collector element 122 comprises or is formed from a metallic material. As metallic Material for the first current collector element 122 aluminum has proven to be particularly suitable.
  • the first current collector element 122 is and/or will be made of uncoated aluminum.
  • the first current collector element 122 has at least one, in the present case exactly one, first connection element 123 .
  • the first connection element 123 serves in particular to connect the first current collector element 122 to the first cell pole 118 and/or to make electrical contact between the electrochemical element 104 and the first cell pole 118.
  • the first connection element 123 is designed in the form of a bulge pointing in the direction of the first cell pole 118 and/or in the form of a projection pointing in the direction of the first cell pole 118 .
  • the first connection element 123 is and/or is stamped into the first current collector element 122 .
  • the first connection element 123 is preferably at least approximately round (cf. FIG. 6).
  • the first connection element 123 of the first current collector element 122 is a bowl-shaped and/or cup-shaped area of the first current collector element 122 .
  • the first current collector element 122 is mostly plate-shaped, for example over approximately 90% of its area or more.
  • the first current collector element 122 is a current collector plate.
  • first connection element 123 is connected to the first cell pole 118 in a materially bonded and/or form-fitting and/or non-positive manner. According to the first embodiment, the first connection element 123 is connected to the first cell pole 118 by welding.
  • a preferably fluid-tight welded connection is formed from a side of the first cell pole 118 facing away from the first current collector element 122 .
  • the first connection element 123 is fixed to the first cell pole 118 by welding through.
  • the electrochemical cell 100 comprises a second current collector element 124, which is used, for example, to make electrical contact between the electrochemical element 104 and the second cell pole 120.
  • the second current collector element 124 is clamped between the cup element 108 and the cover element 110 and/or connected to them by joining.
  • the second current collector element 124 is cap-can-crimped between edges of the cup element 108 and the lid element 110 .
  • a channel-shaped depression 126 for example a circumferential bead, is and/or is made in cup element 108, which is and/or is directly adjacent to cover element 110 is arranged adjacent thereto.
  • the electrochemical cell 100 also includes a potting element, for example a first potting element 128, for connecting the cup element 108 and the first cell pole 118.
  • the first potting element 128 preferably comprises or is formed from a first polymer material.
  • the first polymeric material includes or is formed from a first resin material.
  • the first resin material comprises or is formed from one or more of the following materials: epoxy resin material, phenolic resin material, aminoplast material, polyurethane material, silicone material, polyester resin material, ABS resin material.
  • the first resin material has a hardness of approximately 40 Shore D or more, in particular approximately 50 Shore D, for example approximately 60 Shore D or more, in a cured state relative to the first polymer material.
  • the hardness of the first resin material in a cured state to the first polymeric material is about 100 Shore D or less, more preferably about 97 Shore D or less, for example about 95 Shore D or less.
  • the hardness is determined according to DIN EN ISO 868 in particular.
  • the first resin material has a glass transition temperature of approx. 90° C. or more, in particular approx. 95° C. or more, for example approx. 100° C. or more.
  • the glass transition temperature is preferably related to a cured state of the first resin material to the first polymer material.
  • the first resin material is a one-part resin material, for example a one-part epoxy resin material.
  • One-component epoxy resin materials preferably have increased stability with respect to an electrolyte which is accommodated in the interior space 116 .
  • the first resin material comprises one or more fillers.
  • the one or more fillers are preferably selected from: inorganic fillers, in particular silicon oxide, carbonate, carbide, in particular silicon carbide, nitride, in particular metal nitride, metal oxide.
  • Preferred silicon oxides are silicates.
  • Oxygen diffusion and/or water diffusion from an environment of electrochemical cell 100 into interior space 116 via first casting element 128 can be avoided or reduced through the use of fillers.
  • the electrochemical cell 100 comprises a first insulating element 130 which forms an electrical separation and/or an electrical insulation between the first cell pole 118 and the cup element 108 .
  • the first insulating element 130 is preferably at least approximately plate-shaped.
  • the first insulating element 130 preferably serves to electrically insulate the first cell pole 118.
  • the first insulating element 130 is arranged on an inside of the base section and/or bottom section 114 of the cup element 108 facing the interior 116.
  • first insulating element 130 is designed in several parts, for example in two parts (not shown).
  • the first insulating element 130 as a whole preferably has an at least approximately circular transverse cut up. Specifically, the cross section is taken perpendicular to a central axis 132 of the electrochemical cell 100 .
  • Central axis 132 of electrochemical cell 100 is preferably parallel to an axis of symmetry of electrochemical cell 100 and/or at least approximately perpendicular to a main plane of extension of cover element 110 and/or bottom section 114 of cup element 108.
  • the first insulating member 130 comprises or is formed from a third polymeric material.
  • the third polymeric material is preferably a thermoplastic polymeric material, in particular an electrolyte-resistant thermoplastic polymeric material.
  • the third polymer material is, for example, a polymer material that can be processed in an injection molding process.
  • the third polymeric material includes or is formed from one or more of the following materials: polyethylene terephthalate, polyethylene, polypropylene, polybutylene terephthalate.
  • the first insulating element 130 has a recess 134, for example in the center, in which the first cell pole 118 is accommodated and/or arranged when the electrochemical cell 100 is in an assembled state.
  • the recess 134 of the first insulating element 130 is preferably at least approximately rectangular in a cross section taken parallel to the main extension plane of the first insulating element 130 .
  • the first cell pole 118 is formed at least approximately complementary to the recess 134 of the first insulating element 130 in a cross section taken parallel to its main extension plane.
  • the first cell pole 118 and the recess 134 of the first insulating element 130 have at least approximately a rectangular shape or at least approximately a circular shape, for example round and/or oval, in a cross section taken perpendicular to the central axis 132 of the electrochemical cell.
  • first cell pole 118 and/or the recess 134 of the first insulating element 130 are at least approximately rectangular in shape with rounded corners in a cross section taken perpendicular to the central axis 132 of the electrochemical cell 100 .
  • the first insulating element 130 has one or more depressions 136 which are arranged circumferentially around the recess 134 .
  • the one or more depressions 136 are preferably channel-shaped depressions and/or beads.
  • the first insulating element 130 has a first depression 136a and a second depression 136b, which are arranged one inside the other (cf. FIG. 7).
  • the first depression 136a on the inside serves in particular to position the first cell pole 118 in the recess 134 of the first insulating element 130 during the manufacture of the electrochemical cell 100.
  • the external second depression 136b is preferably used to position an assembly comprising the first insulating element 130 relative to the cover element 110 during the production of the electrochemical cell 100.
  • the first casting element 128 is arranged between the first cell pole 118 and the cup element 108 in radial directions with respect to the central axis 132 of the electrochemical cell 100 .
  • the casting element fills a cavity between the first insulating element 130, the cup element 108 and the first cell pole 118 essentially completely.
  • the first casting element 128 forms an annular section 138 between the first cell pole 118 and the cup element 108, as seen from a side of the cup element 108 facing away from the cover element 110.
  • the first casting element 128 is at least approximately rectangular in a cross section taken perpendicularly to the central axis 132 of the electrochemical cell 100, for example with rounded corners.
  • the first casting element 128 is at least approximately circular in a cross section taken perpendicularly to the central axis 132 of the electrochemical cell 100 .
  • a circular configuration of the first casting element is preferred in embodiments in which the first cell pole 118 and/or the recess 134 of the first insulating element 130 are configured at least approximately circular.
  • the cover element 108 preferably includes a bursting device 140.
  • the bursting device is preferably used to regulate the pressure in the interior 116 of the electrochemical cell 100.
  • the bursting device 140 has a bursting bar 142 which is designed in such a way that it breaks and/or tears when a critical pressure in the interior 116 of the electrochemical cell 100 is exceeded. The breaking and/or tearing of the bursting bar 142 allows fluid to flow out of the interior 116 into the environment of the electrochemical cell 100 .
  • the bursting bar 142 is formed by a linear area of reduced material thickness and/or by two indentations, for example embossing, made in the cover element 110 on both sides of the cover element 110 .
  • An average material thickness of the bursting bar 142 is preferably approximately 20% or more, in particular approximately 30% or more, for example approximately 40% or more, less than an average material thickness of the cover element 110 in the remaining areas.
  • the average material thickness of the bursting bar 142 is approximately 90% or less, in particular approximately 80% or less, for example approximately 70% or less, less than the average material thickness of the cover element 110 in the remaining areas.
  • the material thickness is preferably defined perpendicular to the main plane of extension of the cover element 110 .
  • the bursting device 140 comprises or is formed from a flat area of reduced material thickness compared to an average material thickness of the cover element 110 in adjacent areas (not shown in the drawing).
  • FIGS. 8 and 9 An embodiment of a method for manufacturing the electrochemical cell 100 according to the first embodiment is shown schematically in FIGS. 8 and 9 shown. In particular, the process steps are indicated schematically by the arrows.
  • a cup member assembly 144 is first fabricated.
  • the cup element assembly 144 includes the cup element 108, the first insulating element 130, the first potting element 128 and the first cell pole 118.
  • the first insulating element 130 is provided and is positioned on a tool carrier 146, for example in the form of a rod.
  • the first cell pole 118 is positioned in a recess 134 provided for this purpose in the first insulating element 130 .
  • the cup element 108 is then positioned in such a way that the first insulating element 130 is positioned on an inner side of the cup element 108 facing the interior space 116 and/or bears against it.
  • cup element 108 the cup element 108, the first insulating element 130 and the first cell pole 118 are stacked on the tool carrier 146.
  • the first resin material is then filled in a flowable state in an area between the first cell pole 118 and the cup element 108, for example poured.
  • the first resin material is then preferably cured and/or dried. During the curing and/or drying of the first resin material, the first potting member 128 is formed.
  • the tool carrier 146 is removed.
  • the cup member assembly 144 is formed.
  • An electrochemical element 104 is preferably provided and/or produced for the final assembly and/or assembly of the electrochemical cell 100 .
  • the electrochemical element 104 comprises one or more first contacting projections 148 for electrically contacting the electrochemical element 104 with the first current collector element 122.
  • the electrochemical element 104 comprises a multiplicity of first contacting projections 148.
  • first contact projections 148 protrude away from a base body 150 of the electrochemical element 104 on a side of the electrochemical element 104 that faces the first cell pole 118 in the assembled state.
  • the first contact projections 148 are, for example, lamellar and/or tab-shaped.
  • first contacting projections 148 are arranged in such a way that there are no first contacting projections 148 in the first connection element 125 of the first current collector element 122 when the electrochemical cell 100 is in the assembled state.
  • first contacting projections pointing radially outwards are formed in a center axis 132 of the electrochemical element 104 .
  • the central axis of the electrochemical element 104 preferably corresponds to the central axis 132 of the electrochemical cell 100 in the assembled state.
  • the electrochemical element 104 has one or more second contact projections 152 for making electrical contact between the electrochemical element 104 and the second current collector element 124 includes.
  • the electrochemical element 104 comprises a multiplicity of second contacting projections 152.
  • the second contact projections 152 protrude away from the base body 150 of the electrochemical element 104 on a side of the electrochemical element 104 that faces away from the first cell pole 118 in the assembled state.
  • the second contact projections 152 are, for example, lamellar and/or lug-shaped.
  • the one or more first contact projections 148 and/or the one or more second contact projections 152 are uncoated, for example.
  • first contact projections 148 are connected, for example welded, to the first current collector element 122 .
  • the second contact projections 152 are preferably connected to the second current collector element 124, for example welded.
  • edge regions of the second current collector element 124 are curved in a direction pointing away from the electrochemical element 104 .
  • the electrochemical element 104 is inserted into the cup element 108 after the provision and/or production of the electrochemical element 104 .
  • the electrochemical element 104 is inserted into the cup element 108 of a cup element assembly 144 fabricated as previously described.
  • the first current collector element 122 of the electrochemical cell 100 is then preferably connected to the first cell pole 118, for example welded.
  • the first cell pole is 118 and the first current collector element 122 in the first connection element 125 of the first current collector element 122 connected to one another by welding through.
  • the penetration welding is indicated schematically by a triangle in the figures.
  • material connections for example welded connections, are represented by a triangle in all figures.
  • cover element 110 is arranged on second current collector element 124 and cup element 108 is connected to cover element 110 and second current collector element 124 by joining, for example by crimping.
  • a further embodiment of an electrochemical cell 100 shown in Figs. 10 to 15 differs in terms of structure and function essentially from the first embodiment shown in Figs. 1 to 9 in that the electrochemical cell 100 instead of a first casting element 128 a second casting element 154 comprises.
  • the second casting element is preferably used to connect a second cell pole 120, which is designed as a second cell terminal, to the cover element 110.
  • the second current collector element 124 has a second connection element 125 .
  • the second connection element 125 is in the form of a bulge pointing in the direction of the second cell pole 120 and/or in the form of a projection pointing in the direction of the second cell pole 120 .
  • the second connection element 125 is and/or will be stamped into the second current collector element 124 .
  • the second connection element 125 is preferably at least approximately round.
  • the second connection element 125 of the second current collector element 124 is a cup-shaped and/or cup-shaped area of the second current collector element 124 .
  • the second current collector element 124 is mostly plate-shaped, for example over approximately 90% of its area or more.
  • the second current collector element 124 is a current collector plate.
  • the second current collector element 124 of the further embodiment illustrated in FIGS. 10-15 preferably has the features and/or advantages of the first current collector element 122 of the first embodiment of the electrochemical cell 100 illustrated in FIGS. 1-9.
  • the second current collector element 124 is preferably bonded to the second cell pole 120, in particular by welding, for example through welding.
  • the first current collector element 122 is preferably connected to the cup element 108 in a materially bonded manner, in particular by welding, for example by welding through.
  • the first connection element 123 of the first current collector element 122 is fixed in a recess of the cup element 108 .
  • the cup member 108 includes or is formed from aluminum.
  • the cup element 108 is at cathode potential.
  • the cup element 108 forms the first cell pole 118 .
  • a separate first cell pole 118 and/or a first casting element 128 can preferably be dispensed with.
  • a first insulating element 130 is not necessary.
  • the second casting element 154 comprises or is formed from a second polymer material.
  • the second polymeric material includes or is formed from a second resin material.
  • the second resin material comprises or is formed from one or more of the following materials: epoxy resin material, phenolic resin material, aminoplast material, polyurethane material, silicone material, polyester resin material, ABS resin material.
  • the second resin material has a hardness of about 40 Shore D or more, in particular about 50 Shore D, for example about 60 Shore D or more, in a cured state compared to the second polymer material.
  • the hardness of the second resin material in a cured state to the second polymeric material is about 100 Shore D or less, more preferably about 97 Shore D or less, for example about 95 Shore D or less.
  • the hardness is determined according to DIN EN ISO 868 in particular.
  • the second resin material has a glass transition temperature of approx. 90° C. or more, in particular approx. 95° C. or more, for example approx. 100° C. or more.
  • the glass transition temperature is preferably related to a cured state of the second resin material to the second polymeric material.
  • the second resin material is a one-part resin material, for example a one-part epoxy resin material.
  • One-component epoxy resin materials preferably have increased stability with respect to an electrolyte which is accommodated in the interior space 116 . It can be favorable if the second resin material comprises one or more fillers.
  • the one or more fillers are preferably selected from: inorganic fillers, in particular silicon oxide, carbonate, carbide, in particular silicon carbide, nitride, in particular metal nitride, metal oxide.
  • Preferred silicon oxides are silicates.
  • Oxygen diffusion and/or water diffusion from an environment of electrochemical cell 100 into interior space 116 via second casting element 154 can be avoided or reduced through the use of fillers.
  • the second casting element 154 preferably has one or more of the features and/or advantages described in connection with the first casting element 128 .
  • the electrochemical cell 100 has a second insulating element 156 .
  • the second insulating element 156 preferably serves to electrically insulate the second cell pole 120 from the cover element 110.
  • the second insulating element 156 forms an electrical separation and/or electrical insulation between the second cell pole 120 and the cover element 110.
  • the second insulating element 156 is preferably at least approximately plate-shaped.
  • the second insulating element 156 is preferably used for electrical insulation of the second cell pole 120.
  • the second insulating element 154 is arranged on an inner side of the cover element 110 facing the interior space 116.
  • the second insulating element 156 can be designed in several parts, for example in two parts (not shown). As can be seen in particular in FIG. 14, the second insulating element 156 as a whole preferably has an at least approximately circular cross section. Specifically, the cross section is taken perpendicular to a central axis 132 of the electrochemical cell 100 .
  • the second insulating member 156 includes or is formed from a fourth polymeric material.
  • the fourth polymeric material is preferably a thermoplastic polymeric material, in particular an electrolyte-resistant thermoplastic polymeric material.
  • the fourth polymer material is, for example, a polymer material that can be processed in an injection molding process.
  • the fourth polymeric material includes or is formed from one or more of the following materials: polyethylene terephthalate, polyethylene, polypropylene, polybutylene terephthalate.
  • the second insulating element 156 has a recess, for example in the middle, in which the second cell pole 120 is accommodated and/or arranged when the electrochemical cell 100 is in an assembled state.
  • the recess of the second insulating element 156 is at least approximately rectangular in cross-section taken parallel to the main extension plane of the second insulating element 156 .
  • the second cell pole 120 and the recess of the second insulating element 130 in a cross section taken perpendicularly to the central axis 132 of the electrochemical cell each have at least approximately a rectangular shape or a circular shape, for example round and/or oval.
  • the second cell pole 120 comprises or is formed from a metallic material, for example copper.
  • the second cell pole 120 and/or the recess of the second insulating element 156 are at least approximately rectangular in shape with rounded corners in a cross section taken perpendicular to the central axis 132 of the electrochemical cell 100.
  • the second casting element 154 forms an annular section 158 between the second cell pole 120 and the cover element 110.
  • the second cell pole 120 is arranged centrally in the cover element 110 and/or the bursting device 140 is arranged towards an edge area of the cover element 110 .
  • the electrochemical cell 100 has an electrolyte fill opening 160 .
  • the electrolyte filling opening 160 is preferably used for filling with electrolyte and/or refilling with electrolyte and/or removing electrolyte.
  • the electrolyte filling opening 160 is preferably designed as a passage opening in the cover element 110, it being possible for the electrolyte filling opening 160 to be and/or to be closed in a fluid-tight manner after the interior space 116 has been filled.
  • the electrolyte fill opening 160 is welded after the electrochemical cell 100 has been filled.
  • the cover element 110 and the cup element 108 are preferably bonded to one another, for example by welding.
  • the further embodiment of an electrochemical cell shown in FIGS. 10 to 15 preferably has no direct material transition from copper to aluminum or from aluminum to copper.
  • FIGS. 10 to 15 essentially corresponds to the embodiment shown in FIGS. 1 to 9 in terms of structure and function, so that reference is made to their description in this respect.
  • FIGS. 10 to 15 The further embodiment of an electrochemical cell 100 illustrated in FIGS. 10 to 15 can be produced, for example, according to the embodiment of a method for producing an electrochemical cell 100 illustrated in FIGS. 41 and 42.
  • a further embodiment of an electrochemical cell 100 which is not shown in the drawing in its entirety in FIGS. 16 and 17, differs in terms of structure and function from the embodiment shown in FIGS , which is arranged, for example, circumferentially around an opening, in which the second cell pole 120 is arranged.
  • the elevation 162 projects away from a base body of the cover element 110 in a direction pointing away from the interior of the electrochemical cell 100 .
  • the elevation 162 delimits the opening for receiving the second casting element 154.
  • the elevation 162 serves in particular to increase the fill level when the second resin material is filled in.
  • the elevation 162 is a bead.
  • the second cell pole 120 has one or more radial projections 164, which extend along radial directions with respect to the central axis 132 of the electrochemical cell 100 .
  • the second cell pole 120 has a single radial projection 164 which is formed to run around the second cell pole 120 . In this way, the second casting element 154 can mechanically latch onto the second cell pole 120 .
  • the cover element 110 has one or more recesses 166, in which the second casting element engages behind the cover element in a mounted state of the electrochemical cell 100 along a direction running parallel to the central axis 132.
  • a peripheral recess 166 is provided, through which in particular an undercut is formed.
  • FIGS. 16 and 17 essentially corresponds to the embodiment shown in FIGS. 10 to 15 in terms of structure and function, so that reference is made to their description in this respect.
  • a further embodiment of an electrochemical cell 100 which is not shown in the drawing in its entirety in FIGS. 18 to 20, differs in terms of structure and function from the embodiment shown in FIGS or is designed as a snap-over element 168 as a whole.
  • the second cell pole forms a so-called "Current Interruption Device” (CID).
  • CID Current Interruption Device
  • a rest state of the snap element 168 is shown.
  • a triggered state of the snap element 168 is shown.
  • the snap-over element 168 is preferably deflected outwards from the rest state into the triggered state. The deflection of the snap element 168 outwards away from the interior 116 of the electrochemical cell 100 preferably interrupts and/or separates an electrical contact between the second cell pole 120 and a second current collector element 124 .
  • the deflection of the at least one snap-over element 168 from the rest state to the triggered state particularly breaks an electrically conductive connection between the second cell pole 120 and the second current collector element 124, which is connected to the electrochemical element 104.
  • the snap-over element 168 is preferably formed by the second cell pole as a whole.
  • the second cell pole 120 is arched.
  • the at least one snap-over element 168 can be welded into a base body of the second cell pole 120 of the electrochemical cell, for example.
  • the snap-over element 168 preferably has an at least approximately circular cross section.
  • the cross section is preferably taken perpendicular to central axis 132 of electrochemical cell 100 .
  • FIGS. 18 to 20 essentially corresponds to the embodiment shown in FIGS. 10 to 15 in terms of structure and function, so that reference is made to their description in this respect.
  • a further embodiment of an electrochemical cell 100 which is not shown in the drawing in its entirety in FIG. 21, differs in terms of structure and function essentially from the embodiment shown in FIGS. 10 to 15 in that the second cell pole 120 has an area of reduced material thickness 170 .
  • the area of reduced material thickness 170 serves in particular to facilitate the ability to connect the second cell pole 120 to the second current collector element 124.
  • the area of reduced material thickness 170 is, for example, an embossed area.
  • the second cell pole 120 preferably has a reduced welding depth.
  • the material thickness in the area of reduced material thickness 170 is approximately 20% or more, for example approximately 30% or more, less than an average material thickness in the remaining areas of the second cell pole 120.
  • an electrochemical cell 100 shown in FIG. 21 essentially corresponds to the embodiment shown in FIGS. 10 to 15 in terms of structure and function, so that reference is made to their description in this respect.
  • the current collector element can form a first current collector element 122 and/or a second current collector element 124 .
  • the first attachment element 123 or the second attachment element 125 is formed here by a cut-out contour.
  • a region forming the first connection element 123 or the second connection element 125 is bent away from a base body of the current collector element 122/124.
  • the respective connection element 123/125 is at least approximately L-shaped in a cross section taken perpendicular to the main extension plane of the base body of the respective current collector element 122/124.
  • the first connection element 123 or the second connection element 125 is formed by stamping.
  • a tolerance compensation element is preferably formed by the cut-out area, for example the punched-out area.
  • FIG. 24 Another variant of a first current collector element 122 or a second current collector element 124 shown in Figs. 24 and 25 differs in terms of design and function essentially from the variant shown in Figs. 22 and 23 in that the first connection element 123 or the second connection element 125 is connected to the base body of the respective current collector element 122/124 by a transition which is at least approximately U-shaped in cross section.
  • FIG. 26 and 27 Another variant of a first current collector element 122 or a second current collector element 124 shown in Figs. 26 and 27 differs in terms of design and function from the variant shown in Figs. 22 and 23 essentially in that the first connection element 123 or the second connection element 125 are at least approximately cup-shaped and/or cup-shaped.
  • the first current collector element 122 and the second current collector element 124 is preferably formed without openings.
  • the variant of a current collector element 122/124 shown in FIGS. 26 and 27 corresponds to the variant shown in FIGS. 22 and 23, so that reference is made to their description in this respect.
  • the variants of the current collector elements 122/124 shown in FIGS. 22 to 27 can be used in all the embodiments of an electrochemical cell 100 described above and below. Different variants can also be combined with one another in one embodiment.
  • a further embodiment of an electrochemical cell 100 shown in FIGS. 28 to 31 differs from the embodiment shown in FIG. 21 in terms of structure and function essentially in that the second cell pole 120 is designed in several parts, in the present case in two parts.
  • a first part 120a forms a carrier part in which a second part 120b of the second cell pole 120 is accommodated.
  • the first part 120a and the second part 120b of the second cell pole 120 are formed from different metallic materials. As a result, a material transition is formed within the second cell pole 120 .
  • the first part 120a of the second cell pole 120 comprises or is formed from copper.
  • the second cell pole 120 preferably comprises two functional areas 172, which are formed by the first part 120a and the second part 120b.
  • the first part 120a preferably forms a connection and/or welding area in which the second cell pole 120 is connected to the second current collector element 124 .
  • the second part 120b here comprises or is formed from aluminum.
  • the second part 120b is arranged on a side of the second cell pole 120 that faces away from the interior space 116 of the electrochemical cell 100 .
  • the two functional areas 172 are preferably surrounded by elevations 162 of the cover element 110 and/or surrounded by the second casting element 154 .
  • FIGS. 28 to 31 essentially corresponds to the embodiment shown in FIG. 21 in terms of structure and function, so that reference is made to the description thereof.
  • a further embodiment of an electrochemical cell 100 which is not shown as a whole in the drawings in FIGS. 32 and 33, differs in terms of structure and function essentially from the embodiment shown in FIGS 120b are at least partially formed by elevations 174.
  • Elevations 162 of the cover element 110 are in particular unnecessary.
  • FIGS. 32 and 33 essentially corresponds to the embodiment shown in FIGS. 28 to 31 in terms of structure and function, so that reference is made to their description in this respect.
  • FIGS. 34 to 36 A further embodiment of an electrochemical cell 100 shown in FIGS. 34 to 36 essentially differs from the embodiment shown in FIGS.
  • the first current collector element 122 is curved towards the edge, the edge of the first current collector element 122 preferably being curved away from the base section 114 .
  • FIGS. 34 and 36 essentially corresponds to the embodiment shown in FIGS. 10 to 15 in terms of structure and function, so that reference is made to their description in this respect.
  • FIGS. 37 to 40 differs essentially from the first embodiment shown in FIGS. 1 to 9 in terms of structure and function in that both the first cell pole 118 and the second cell pole 120 are designed as cell terminals separate from the housing 106 and that the first cell pole 118 and the second cell pole 120 are embedded in a common casting element 154 .
  • cup element 108 and the lid element 110 are and/or are connected to one another by welding.
  • Both cell poles, the first cell pole 118 and the second cell pole 120, are accommodated in an opening of the cover element 110 introduced in the cover element 110.
  • the first current collector element 122 and the second current collector element 124 are arranged on a side of the electrochemical element 104 which faces the cover element 110 .
  • the first current collector element 122 and the second current collector element 124 are arranged next to one another and at the same distance from the cover element 110 .
  • the first current collector element 122 has an at least approximately cup-shaped and/or cup-shaped first connection element 123, which is materially connected to the first cell pole 118, for example by welding.
  • the second current collector element 124 has an at least approximately cup-shaped and/or cup-shaped second connection element 125, which is materially connected to the second cell pole 120, for example by welding.
  • a weld seam between the respective connection element 123, 125 and the cell pole 118, 120 is preferably fluid-tight.
  • the electrolyte filling opening 160 is preferably closed by welding after the housing 106 has been filled with electrolyte.
  • the first cell pole 118 and the second cell pole 120 are preferably electrically isolated from one another by the casting element 154 and are embedded in the polymer material of the casting element 154 .
  • a second insulating element 156 of the electrochemical cell 100 is arranged adjacent to the cover element 110 and serves to electrically insulate the cell poles 118, 120 and/or the interior 116 of the electrochemical cell 100.
  • the second insulating element 156 preferably has a recess and a plurality of indentations in the form of beads. In terms of structure and function, these correspond to the recess 134 and the depressions 136a and 136b, which were described in connection with the first insulating element 130 of the first embodiment (cf. FIG. 7), so that reference is made to the corresponding explanations.
  • each cell pole 118, 120 has a recess and corresponding depressions in the form of beads. It can be favorable if a first insulating element 130 is arranged immediately adjacent to the bottom section 114 of the cup element 108 .
  • FIGS. 37 to 40 essentially corresponds to the first embodiment shown in FIGS. 1 to 9 in terms of structure and function, so that reference is made to the description thereof.
  • a cover member assembly 176 is first fabricated (see Figure 41).
  • the second insulating element 156, the cover element 110 and the second cell pole 120 are stacked.
  • the second resin material is cast and/or filled in a flowable state in an area between the second cell pole 120, the cover element 110 and/or the second insulating element 156.
  • the second resin material is cured and/or dried, as a result of which the second casting element 154 is formed in particular.
  • an electrochemical element 104 is preferably provided or manufactured which has first contacting projections 148 and second contacting projections 152 which protrude from the main body 150 of the electrochemical element 104 on opposite sides thereof.
  • the first contact projections 148 are preferably cohesively connected to the first current collector element 122, for example welded.
  • the second contact projections 152 are integrally connected to the second current collector element 124, for example by welding.
  • a component resulting from the steps described above is then inserted into the cup element 108 and the cover element assembly 176 is placed on and/or positioned relative to the cup element 108 .
  • the first current collector element 122 is preferably cohesively connected to the cup element 108 at its first connection element 123 , for example welded to it.
  • cover element 110 and the cup element 108 are connected to one another in a materially bonded manner beforehand, during this time or subsequently, for example welded to one another.
  • the second current collector element 124 is materially connected at its second connection element 125 to the second cell pole 120, for example welded to it.
  • the further embodiment of an electrochemical cell 100 shown in Figs. 43 to 46 differs in terms of structure and function essentially from the embodiment shown in Figs. 34 to 36 in that the second current collector element 124 has a first bend 178 by approximately 180 ° and a second bend 180 of about 90°.
  • the second current collector element 124 forms a current vane, for example.
  • the second cell pole 120 is preferably arranged eccentrically.
  • the electrochemical cell 100 has a spacer element 182 which is arranged between the second cell pole 120 and the cover element 110 .
  • the spacer element 182 delimits the second casting element 154 radially.
  • the second insulating member 156 has an opening forming a resin material filling port 184 for filling the resin material.
  • the second current collector element 124 preferably has a connection area 186 which is used in particular to connect to the second contacting projections 152, for example by welding.
  • the second current collector element 124 comprises two current collector element parts 124a, 124b, which are formed from different metallic materials.
  • a first current collector element part 124a which is and/or is connected to the second contacting projections 152, comprises or is formed from copper.
  • a second current collector element part 124b which is and/or is connected to the second cell pole 120, comprises or is formed from aluminum.
  • the second current collector element part 124b is preferably cohesively connected to the second cell pole 120, for example welded.
  • an electrochemical element 104 is preferably provided or produced as described in connection with the other methods.
  • the first current collector element 122 and the second current collector element 124 together with a cover element assembly 176 are then cohesively connected to the electrochemical element 104, for example welded.
  • the second insulating member 156, the second cell pole 120 and the second current collector member 124 are preferably stacked and the second resin material is filled through the resin material filling opening 184.
  • the second resin material is then preferably cured and/or dried, as a result of which the second casting element 154 in particular is formed.
  • the second current collector element 124 is then preferably bent twice, as a result of which the first bend 178 and the second bend 180 are formed, for example.
  • a resulting component is inserted into the cup element 108 and the cup element 108 and the cover element 110 are preferably connected to one another in a materially bonded manner, for example welded to one another.
  • the electrolyte filling opening 160 is preferably closed in a fluid-tight manner, for example welded.
  • FIGS. 43 to 46 essentially corresponds to that in FIGS. 34 to 36 in terms of structure and function, so that reference is made to the description thereof.
  • a further embodiment of an electrochemical cell 100 shown in FIG. 47 differs in terms of structure and function from the embodiment shown in FIGS 125 is a second spring element 190 .
  • the first spring element 188 and/or the second spring element 190 preferably allows springing in a direction running parallel to the central axis 132 of the electrochemical cell 100 .
  • the electrochemical element 104 is preferably non-positively connected to the bottom section 114 of the cup element 108 via the first spring element 188 .
  • the first spring element 188 is in particular a spring washer.
  • the first spring element 188 includes or is formed from aluminum.
  • the electrochemical element 104 is non-positively connected to the second cell pole 120 via the second spring element 190 .
  • the second spring element 190 is a spring washer.
  • the second spring element 190 includes or is formed from copper.
  • the second spring element 190 is materially connected to the second cell pole 120, for example by welding.
  • the second spring element 190 is welded to the second cell pole 120 at its free ends.
  • the second cell pole 120 comprises an aluminum-copper pin or is formed from it.
  • a non-positive tab connection is formed.
  • FIG. 47 essentially corresponds to that in FIGS. 34 to 36 in terms of structure and function, so that reference is made to the description thereof.
  • the further embodiment of an electrochemical cell 100 shown in Fig. 48 differs in terms of structure and function from the embodiment shown in Figs. 34 to 36 essentially in that the first current collector element 122 and/or the second current collector element 124 has an electrically conductive coating 192 exhibit.
  • the coating 192 is electrolyte resistant.
  • the electrically conductive and/or electrolyte resistant coating 192 includes or is formed from an electrically conductive fluoropolymer material or a synthetic rubber material.
  • a first coating material of the coating 192 of the first current collector element 122 and a second coating material of the coating 192 of the second current collector element 124 are preferably identical. Alternatively, different coating materials can be used.
  • Electrically conductive fluoropolymer materials and/or synthetic rubber materials are preferably used as the first coating material and/or as the second coating material.
  • compositions are suitable as the first coating material or as the second coating material for the electrically conductive and/or electrolyte-resistant coating 192: al) a resin material and one or more electrically conductive additives, for example an epoxy resin material and one or more conductive carbon blacks; a2) an elastomeric material and a transition metal carbide, and optionally one or more electrically conductive additives, for example ethylene-propylene-diene rubber or styrene-butadiene rubber and titanium carbide; a3) an electrically conductive adhesive material, preferably an elastomeric material, a resin material, one or more electrically conductive additives and optionally a transition metal oxide, for example ethylene-propylene-diene rubber or styrene-butadiene rubber, an epoxy resin material, conductive carbon black and optionally titanium carbide ; a4) an electrically conductive thermoplastic material, in particular a
  • Thermoplastic material one or more electrically conductive additives and a transition metal oxide, for example polyvinylidene fluoride or poly tetrafluoroethylene and conductive carbon black and titanium carbide; a5) an electrically conductive paste, for example comprising styrene-butadiene rubber, carboxymethyl cellulose, titanium carbide, where a fluoropolymer suspension can optionally be used.
  • a transition metal oxide for example polyvinylidene fluoride or poly tetrafluoroethylene and conductive carbon black and titanium carbide
  • an electrically conductive paste for example comprising styrene-butadiene rubber, carboxymethyl cellulose, titanium carbide, where a fluoropolymer suspension can optionally be used.
  • the aforementioned materials can in particular be referred to as follows: al) electrically conductive casting resins; a2) electrically conductive elastomers; a3) an electrically conductive adhesive; a4) an electrically conductive thermoplastic material; a5) an electrically conductive paste.
  • the second resin material of the second casting element 154 and a coating material of the coating 192 are cured and/or dried at the same time.
  • the electrochemical cell 100 includes a spacer element 182 as described in connection with Figures 43-46.
  • FIG. 48 essentially corresponds to that in FIGS. 34 to 36 in terms of structure and function, so that reference is made to the description thereof.
  • FIGS. 49 to 52 differs in structure and function essentially from the embodiment shown in FIGS a weld is formed by an at least approximately cylindrical cavity 194 in the electrochemical element 104 .
  • the electrochemical element 104 as a whole is preferably at least approximately in the form of a hollow cylinder.
  • the cavity 194 is preferably formed by or when removed from a winding device.
  • the winding device is preferably a winding mandrel around which a sub strata constituting the electrochemical element 104 (see the method of FIG. 52, the winding itself not being shown in the drawing).
  • the first part 120a and the second part 120b of the second cell pole 120 are preferably arranged one behind the other along a direction running parallel to the central axis 132 and in particular have at least approximately the same dimensions.
  • the first connection element 123 of the first current collector element 122 preferably has an opening at an end facing the base section 114 .
  • the electrochemical element 104 is preferably produced or provided and the first current collector element 122 and the second current collector element 124 are welded on.
  • the cover element assembly is then preferably put on and the second current collector element 124 and the second cell pole 120 are welded to one another, for example, through the cavity 194 in the electrochemical element 104 .
  • the welding is preferably done by laser welding or resistance welding with a long rod-shaped electrode.
  • a resulting assembly is then preferably inserted into the cup member 108 and the lid member 110 and the cup element 108 are connected to each other with a material fit, for example welded.
  • electrolyte is filled in and then the electrolyte filling opening 160 is welded.
  • FIGS. 49 to 52 essentially corresponds to that in FIGS. 28 to 31 in terms of structure and function, so that reference is made to their description in this respect.
  • FIGS. 53 to 56 essentially differs from the embodiment shown in FIGS , which is welded at the end of an assembly of the electrochemical cell 100 and/or becomes.
  • connection element 125 and the second cell pole 120 are welded to one another through the passage opening 196 .
  • FIGS. 53 to 56 essentially corresponds to that in FIGS. 49 to 52 in terms of structure and function, so that reference is made to their description in this respect.
  • An alternative embodiment of a cover element assembly 176 shown in FIGS. 57 to 59 differs from the embodiment shown in FIGS / or rounded and / or continuously curved.
  • the second insulating element 156 preferably accommodates the entire second current collector element 124 .
  • the second insulating element 156 is, for example, at least approximately cup-shaped and/or disk-shaped.
  • the cover element assembly 176 can be simply placed or plugged onto a cup element 108, with the second insulating element 156 preferably being pushed together with the second current collector element 124 into the open end of the cup element 108, in particular up to the open end of the cup element 108 on the cover element 110 of the cover element assembly 176, in particular on a cover plate 111, comes into contact and is connected to it, for example clamped, welded, etc.
  • a side of the second current collector element 124 which faces the electrochemical element 104 preferably comprises a plurality of, for example five, elevations 198 which are elevated in the direction of the electrochemical element 104 .
  • the elevations 198 are in particular beads 200.
  • the elevations 198 extend in particular in a star shape outwards in the radial direction.
  • the bumps 198 form weld areas for welding to the electrochemical element 104.
  • 60 shows an optimized first current collector element 122 which may be used in this and other embodiments.
  • a side of the first current collector element 122 which faces the electrochemical element 104 preferably comprises a plurality of, for example three, elevations 198 which are elevated in the direction of the electrochemical element 104 .
  • the elevations 198 are in particular beads 200.
  • the elevations 198 extend in particular in a star shape outwards in the radial direction and/or are arranged and/or formed in a uniformly distributed manner in the circumferential direction.
  • the bumps 198 form weld areas for welding to the electrochemical element 104.
  • the first current collector element 122 preferably includes one or more openings 202, for example slots 204 or slots 206.
  • the one or more openings 202 extend in particular in the radial direction and/or are arranged and/or formed in a uniformly distributed manner in the circumferential direction.
  • elevations 198 and openings 202 are arranged and/or formed in an alternating manner.
  • the openings 202 make it possible in particular to achieve an optimized behavior of the electrochemical cell 100 for degassing and/or in the event of a thermal event.
  • a gas forming between the layers of the electrochemical element 104 can be easily discharged through the openings 202 .
  • FIGS. 57 to 60 essentially corresponds to that in FIGS. 43 to 46 in terms of structure and function, so that reference is made to their description in this respect.
  • a filling opening in particular an electrolyte filling opening 160, is always provided in the center, which is surrounded, for example, by a peripheral embossing and can be welded tightly in a simple manner using a metal plate.
  • bursting devices 140 in particular bursting webs 142, are provided and/or formed in the bottom sections 114.
  • attachment areas for attaching a first current collector element 122 are preferably provided.
  • the first current collector element 122 is clamped to the base section 114 or is welded circumferentially in an edge area.
  • the bursting bar 142 is designed in the form of a circular ring.
  • an inwardly protruding elevation 198 is provided, which in particular is circular and is used for welding to the first current collector element 122.
  • a circular ring-shaped bursting bar 142 is arranged and/or formed in the base section 114 in the radial direction within the elevation 198 .
  • two bursting devices 140 are provided, which are each arranged and/or formed essentially in a semicircle around the filling opening. Arranged and/or formed between the two bursting devices 140 are essentially radially outwardly aligned, web-like elevations 198 which protrude into the interior 116 and are used for welding to the first current collector element 122 . The elevations 198 are positioned in such a way that the welding does not impair the function of the bursting devices 140 .
  • floor sections 114 or only individual features or combinations of features can optionally be provided in individual, several or all embodiments of the electrochemical cell 100 .
  • electrochemical cells 100 preferably have optimized sealing properties and/or are easy to manufacture.

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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)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

L'objet de la présente invention est la mise au point d'une cellule électrochimique (100) qui peut être fabriqué de la manière la plus simple possible et qui présente une durée de vie aussi longue que possible. À cet effet, l'invention concerne une cellule électrochimique (100), en particulier une cellule ronde, qui comporte un élément électrochimique (104), un boîtier (106), un premier pôle de cellule (118) et un deuxième pôle de cellule (120), la cellule électrochimique (100) comprenant par ailleurs un élément d'enrobage, en particulier un premier élément d'enrobage (128), pour relier le boîtier (106) et le premier pôle de cellule (118) et/ou un élément d'enrobage, en particulier un deuxième élément d'enrobage (154), pour relier le boîtier (106) et le deuxième pôle de cellule (120).
EP22738607.5A 2021-07-05 2022-06-24 Cellule électrochimique, système électrochimique et procédé de fabrication d'une cellule électrochimique Pending EP4367741A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021207011.6A DE102021207011A1 (de) 2021-07-05 2021-07-05 Elektrochemische Zelle, elektrochemisches System und Verfahren zur Herstellung einer elektrochemischen Zelle
PCT/EP2022/067436 WO2023280604A1 (fr) 2021-07-05 2022-06-24 Cellule électrochimique, système électrochimique et procédé de fabrication d'une cellule électrochimique

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EP4367741A1 true EP4367741A1 (fr) 2024-05-15

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US (1) US20240128610A1 (fr)
EP (1) EP4367741A1 (fr)
CN (1) CN117616620A (fr)
DE (1) DE102021207011A1 (fr)
WO (1) WO2023280604A1 (fr)

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KR102860189B1 (ko) * 2023-04-21 2025-09-16 삼성에스디아이 주식회사 이차전지
CN219801068U (zh) * 2023-05-22 2023-10-03 远景动力技术(江苏)有限公司 圆柱电池、电池集成和用电设备

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1239320C (zh) 2001-12-28 2006-02-01 大成普拉斯株式会社 铝合金与树脂的复合体及其制造方法
JP3960877B2 (ja) * 2002-08-05 2007-08-15 三洋電機株式会社 電池の製造方法
FR2905525B1 (fr) * 2006-09-05 2008-10-31 Accumulateurs Fixes Dispositif de raccordement electrique pour borne de sortie d'un accumulateur de courant
JP5409072B2 (ja) * 2009-03-27 2014-02-05 パナソニック株式会社 電池用ガスケット及びそれを用いたアルカリ電池
JP5566641B2 (ja) 2009-08-26 2014-08-06 株式会社東芝 電池
CN102511090B (zh) * 2010-01-13 2014-10-15 丰田自动车株式会社 电池的制造方法
US20110300414A1 (en) 2010-06-07 2011-12-08 Woonseong Baek Cap assembly and rechargeable battery having the same
JP5558569B2 (ja) * 2010-07-21 2014-07-23 株式会社東芝 電池及び組電池
US9236596B2 (en) 2011-06-30 2016-01-12 Samsung Sdi Co., Ltd. Rechargeable battery
KR101683213B1 (ko) 2011-11-02 2016-12-07 삼성에스디아이 주식회사 이차 전지
DE102012213871A1 (de) 2012-08-06 2014-02-06 Robert Bosch Gmbh Batteriezelle und Verfahren zu ihrer Herstellung sowie Batterie und Kraftfahrzeug mit einer solchen
KR101553583B1 (ko) 2014-01-28 2015-09-16 삼성에스디아이 주식회사 이차전지
DE102014221626A1 (de) 2014-10-24 2016-04-28 Robert Bosch Gmbh Batteriezelle
CN108701805A (zh) 2016-03-17 2018-10-23 株式会社杰士汤浅国际 蓄电元件以及蓄电元件的制造方法
JP6780419B2 (ja) 2016-09-30 2020-11-04 株式会社Ｇｓユアサ 蓄電素子
KR102335021B1 (ko) 2016-10-21 2021-12-02 삼성에스디아이 주식회사 이차 전지 및 그 모듈
DE102017200390A1 (de) 2017-01-11 2018-07-12 Elringklinger Ag Elektrochemische Zelle, elektrochemische Einrichtung, Verfahren zur Herstellung einer elektrochemischen Zelle
US10714732B2 (en) * 2017-01-30 2020-07-14 Fdk Corporation Current collecting lead and production method for secondary battery including current collecting lead
KR102337491B1 (ko) 2017-03-06 2021-12-09 삼성에스디아이 주식회사 이차 전지
DE102017216873A1 (de) 2017-09-25 2019-03-28 Robert Bosch Gmbh Verfahren zum Herstellen einer Batteriezelle und Batteriezelle
DE102018209270B4 (de) 2018-06-11 2022-09-22 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen einer Deckelbaugruppe für ein Zellgehäuse einer prismatischen Batteriezelle einer Hochvoltbatterie eines Kraftfahrzeugs, Batteriezelle sowie Hochvoltbatterie
DE102020200063A1 (de) 2020-01-07 2021-07-08 Elringklinger Ag Elektrochemische Zelle, elektrochemisches System und Verfahren zur Herstellung einer elektrochemischen Zelle
CN116722325A (zh) * 2020-04-09 2023-09-08 宁德时代新能源科技股份有限公司 电池、电池组、用电设备和电池的制造方法
CN113346168A (zh) 2021-05-21 2021-09-03 湖北亿纬动力有限公司 一种新型结构的圆柱型电池

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DE102021207011A1 (de) 2023-01-05
CN117616620A (zh) 2024-02-27
US20240128610A1 (en) 2024-04-18

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