EP4229709A1 - Fabrication d'un boîtier de cellule pour une cellule de batterie et boîtier de cellule - Google Patents

Fabrication d'un boîtier de cellule pour une cellule de batterie et boîtier de cellule

Info

Publication number
EP4229709A1
EP4229709A1 EP21786374.5A EP21786374A EP4229709A1 EP 4229709 A1 EP4229709 A1 EP 4229709A1 EP 21786374 A EP21786374 A EP 21786374A EP 4229709 A1 EP4229709 A1 EP 4229709A1
Authority
EP
European Patent Office
Prior art keywords
cell
layer
heater
battery
cell housing
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
EP21786374.5A
Other languages
German (de)
English (en)
Inventor
Simon LUX
Lydia TERBORG
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP4229709A1 publication Critical patent/EP4229709A1/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
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • 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
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • 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
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
    • 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
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
    • H01M50/128—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only inorganic material
    • 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
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • H01M50/136—Flexibility or foldability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/008—Arrangement or mounting of electrical propulsion units with means for heating the electrical propulsion units
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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

  • the invention relates to a method for producing a cell housing for a battery cell.
  • the invention also relates to a battery with a plurality of battery cells, each of which has a cell housing produced in this way.
  • the invention also relates to an at least partially electrically powered vehicle, having at least one battery with at least one battery cell, which has such a cell housing.
  • the invention is particularly advantageously applicable to electric vehicles and plug-in hybrid vehicles.
  • a cell housing typically made of aluminum can be connected to the live parts in various ways.
  • the cell housing is connected to a positive terminal of a voltage source, with or without an ohmic resistance, in order to ensure the passivation of the inside aluminum surface by the electrolyte.
  • the cell housing is completely isolated from live mechanical parts and an electrical potential across the cell is provided externally.
  • both forms have the effect that the potential applied to the cell housing is also present on its outside.
  • this poses a challenge with regard to a modular structure of a battery with a plurality of battery cells since the battery cells must be electrically insulated from one another in order to avoid short circuits between the battery cells. Electrical insulation is currently achieved by a separate electrically insulating foil surrounding the cell, or by painting the cell.
  • both are expensive and make it difficult to detect electrical faults or changes to the cell housing.
  • the object is achieved by a method for producing a cell housing for a battery cell with integrated cell heating, in which a layer-like, flat cell heating is attached to a flat side of a "first" metallic layer and then the layer or composite stack, which at least the first metallic layer and having the cell heater is folded in such a way that the other flat side of the metallic layer forms an inside of the cell housing.
  • Such a cell housing can advantageously be produced particularly easily by folding (e.g. after a previous punching), especially in comparison to deep-drawing.
  • this makes it possible to apply the flat cell heater to the first metallic layer in a particularly simple manner.
  • the flat cell heater is only slightly mechanically stressed when it is folded, which keeps the risk of it being damaged during production of the cell housing to a minimum.
  • a further advantage is achieved through the integration of the cell heater in the cell housing, because particularly effective heatability is achieved in this way.
  • the abutting edges of the folded cell housing are connected to one another, in particular tightly.
  • the abutting edges can, for example, be welded, in particular by laser welding.
  • a folding process can be understood below to mean a folding and welding process, unless the context indicates otherwise.
  • the battery cell can be a lithium-ion cell, for example.
  • the compound stack can also be referred to as a layer or layer stack.
  • the first metallic layer can be a metal sheet or can have been isolated from a metal sheet. Before folding, it is in particular flat or a flat component. Such flat components typically have two flat sides which are separated from one another by a peripheral edge.
  • the first metallic layer can consist of aluminum, for example.
  • the layered, flat cell heater is attached to the intended flat side of the first metal layer before folding, e.g. by gluing, printing, application of paste, etc.
  • the cell heater can be prefabricated or, alternatively, only be produced on the first metal layer.
  • the cell heating can be in the form of a prefabricated component which has an electrically insulating film - e.g. made of plastic - on which one or more resistance conductor tracks ("heating conductor tracks") are arranged.
  • the cell heater can be glued or welded with its film, e.g. to a metal layer.
  • a second metallic layer is arranged on the side of the cell heater facing away from the first metallic layer.
  • the cell heater can also be mechanically and chemically protected particularly easily in this way.
  • the composite or layer stack to be folded or folded thus also includes the second metallic layer here.
  • the second metallic layer may be of the same material as the first metallic layer, such as aluminum, or alternatively may be of a different metal, such as steel.
  • the cell heater is arranged between the first metallic layer and the second metallic layer, which can also be referred to as a "sandwich composite".
  • the object is also achieved by a cell housing for a battery cell with integrated cell heating, the cell housing having been produced using a method as described above.
  • the cell housing can be designed analogously to the method and vice versa, and has the same advantages.
  • the object is achieved in particular by a cell housing in which a layer-like, flat cell heater is attached to a flat side of a first metallic layer and a composite stack consisting at least of the first metal layer and the cell heater is folded in such a way that another flat side of the first metal layer forms an inside of the cell housing.
  • the cell heater has a heating layer with at least one flat resistance heating conductor.
  • a resistance heating conductor is advantageously easy to operate and can be made thin and flexible.
  • the resistance heating conductor can be, for example, a thin-film or thick-film heating conductor.
  • the resistance heating conductor can be present as a heating conductor track, e.g. as a looped, in particular meandering, heating conductor track.
  • the heating conductor track can have been produced, for example, by printing, squeegeeing, spraying, electroplating, etc.
  • the cell heating has at least one electrically insulating film which is arranged on a respective side of the heating layer. Electrical insulation of the heating layer is thus achieved on this side.
  • the at least one electrically insulating film can also advantageously serve to prefabricate, position and fasten the cell heater.
  • the cell heater has an electrically insulating film on only one side of the heating layer.
  • the cell heater has an electrically insulating film on both sides of the heating layer.
  • the cell heating rests directly on the first metallic layer. This results in the advantage of a particularly low thermal resistance between the heating layer of the cell heater and the first metallic layer and thus particularly effective heating of the cell housing.
  • the cell heater can have at least one heating conductor track applied to an electrically insulating foil, which is electrically separated from the first metallic layer by the foil.
  • the heating layer can be electrically connected to the first metallic layer with a pole or connection.
  • the cell heater rests on the first metallic layer, separated by an electrically insulating layer ("electrical insulating layer").
  • electrical insulation layer can be, for example, a flexible plastic film, for example made of polyethylene.
  • the electrically insulating layer does not represent a component of a prefabricated cell heating system, but can be a layer introduced independently into the composite stack.
  • the electrically insulating layer has at least one property that differs from the film of the cell heater, eg a different material and/or a different thickness. As a result, different properties of insulation can be advantageously combined with one another, e.g. different fire resistance, puncture resistance, etc.
  • an electrical insulation layer is arranged on the side of the cell heater that faces away from the first metallic layer. In this way, particularly reliable electrical insulation of the heating layer of the cell heater to the outside or, if the second metallic layer is present, relative to it, is advantageously achieved.
  • the cell housing has a folded composite of an inner first metallic layer, an outer second metallic layer and a cell heater arranged between them, the cell heater being electrically insulated from the first metallic layer and having a connection to the second metallic layer Location is electrically connected.
  • the other connection of the heating layer can be brought out of the cell housing, e.g. upwards.
  • the object is also achieved by an energy store or a battery with a plurality of battery cells--in particular modularly constructed--battery cells each having a cell housing as described above, the second metal layers of the cell housing being electrically connected to one another.
  • the battery can be designed analogously to the method and the cell housing, and vice versa, and has the same advantages.
  • an electrically driven vehicle (fully electrically operated vehicle or hybrid vehicle) having at least one electric Energy store with at least one battery cell having a cell housing as described above.
  • the plug-in hybrid vehicle application is particularly advantageous here, especially for heating the cell housing before or during a journey in winter.
  • FIG. 1 shows a top view of a planar composite according to an exemplary embodiment in an upper partial image before a folding process and a lower partial image of this composite as a sectional representation in a side view;
  • FIG. 2 shows a top view of a cell housing in an upper partial image, which was produced by folding the assembly from FIG. 1, and the cell housing in a lower partial image as a sectional representation in a side view;
  • FIG. 3 shows a section of a planar composite according to a further exemplary embodiment in a side view
  • FIG. 4 shows a sectional side view of a cell housing which has been produced by folding the assembly according to the exemplary embodiment from FIG. 3;
  • Figures 5 to 7 show a sectional side view of cell housing made by folding composites according to still further embodiments.
  • FIG. 8 shows a sectional side view of a battery with cell housings according to FIG. 7 of several battery cells electrically connected to one another.
  • the composite stack V1 shows a plan view of a flat composite stack V1 before a folding process in an upper partial image and this composite stack V1 in a lower partial image as a sectional side view along a sectional plane AA shown in the upper partial image.
  • the composite stack V1 has a first metal layer 1 and a second metal layer 2, between which a thin, flat or extended cell heater 3 is arranged.
  • the cell heater 3 is thus attached to a flat side 4 of the first metallic layer 1 which faces the second metallic layer 2 .
  • the metallic layers 1 and 2 can consist of aluminum, for example.
  • the cell heater 3 can have, for example, a heating layer 31 which has at least one heating conductor track and is covered on both sides by an electrically insulating film 32a or 32b, as shown in section C.
  • the foils 32a and 32b can be, for example, flexible foils made of polyethylene.
  • the cell heater 3 can be operated in such a way that an electric current is sent through the at least one heating conductor track, which current heats up the heating conductor track through ohmic losses.
  • a heating conductor track and thus the heating layer 31 In order to connect a heating conductor track and thus the heating layer 31 to a voltage source, it can have corresponding connections or contacts at both ends, e.g. contact pads.
  • FIG. 2 shows a top view of a cell housing 5 in an upper partial image, which has been produced by folding the composite stack V1 along the sides of a central base area B, and in a lower partial image the cell housing 5 as a sectional representation in a side view along the sectional plane shown in the upper partial image A-A.
  • the flat side of the first metallic layer 1 facing away from the cell heater 3 forms the inside of the cell housing 5.
  • the fold can be implemented, for example, by folding. After folding, the abutting edges of the cell housing 5 are connected to one another, in particular materially, e.g. by welding, in particular laser welding.
  • the cell housing 5 folded in this way is open at the top, with the open side being able to be covered by a cover or a cover assembly (not shown).
  • FIG. 3 shows a section of a flat composite stack V2 as a sectional side view.
  • the composite stack V2 does not have a second metal layer 2, but instead includes a cell heater 3 applied to a flat side of the first metal layer 1, which can be designed, for example, as shown in FIG.
  • FIG. 4 shows a sectional side view of a cell housing 6 that has been produced by folding the composite stack V2 from FIG.
  • the two electrical connections of the heating layer 31 or the cell heater 3 are brought out of the cell housing 6 and can be connected to a positive pole and a negative pole of a DC voltage source, for example as indicated.
  • one of the two connections could be connected to the first electrical layer 1.
  • FIG. 5 shows a sectional side view of a cell housing 7 which has been produced by folding a composite stack from a first metallic layer 1 and a cell heater 3 applied flat on it.
  • a flat electrical insulation layer 8 e.g. a flexible film made of polyethylene, is arranged between the first metal layer 1 and the cell heater 3.
  • the cell heater 3 can be designed, for example, as shown in FIG. 1, section C.
  • the insulating film 32a facing the first metallic layer 3 can be dispensed with in the cell heater 3 .
  • the electrical insulation of the heating layer 31 from the first metal layer 1 is effected only by the insulating layer 8 .
  • connection variant in which the two electrical connections of the cell heater 3 led out of the cell housing 6 are connected, as indicated, to a positive pole and a negative pole of a DC voltage source.
  • FIG. 6 shows a sectional side view of a cell housing 9 which, in contrast to the cell housing 7, has two flat electrical insulation layers 8 and 10, e.g. flexible films made of polyethylene, between which the cell heater 3 is arranged.
  • the sequence of layers of the associated layer stack is therefore: first metallic layer 1, first insulation layer 8, cell heater 3, second insulation layer 10.
  • the cell heater 3 can be configured, for example, as shown in detail C in FIG.
  • the insulating foil 32a facing the insulating layer 8 and/or the insulating foil 32b facing the insulating layer 10 can be dispensed with in the cell heater 3 .
  • the cell housings 6, 7 and 9, analogous to the cell housing 5, can also have a second metallic layer 2 on the outside.
  • the two electrical connections of the cell heater 3 can also be brought out of the cell housing 7 here.
  • FIG. 7 shows a sectional side view of a cell housing 11, which has the first metallic layer 1 and the second metallic layer 2, between which an insulating layer 8 and a cell heater 31 are arranged, in such a way that the insulating layer 8 is on the first, inner metallic layer 1 and the cell heater 31 rests on the second, outer metallic layer 2 .
  • the cell heater 3 can be designed, for example, as shown in FIG. 1, section C.
  • the insulating film 32a facing the insulating layer 8 can be dispensed with in the cell heater 3 .
  • a connection of the heating layer 31 of the cell heater 3 is electrically connected to the second metallic layer 2, e.g. soldered or welded. Another connection of the heating layer 31 can be led out of the cell housing 11, in particular upwards.
  • more than the layers shown above can be integrated into the cell housing, for example several heating layers, at least one additional layer with different functionality, e.g. a protective layer, etc.
  • one of the two connections can be led out of the cell housing 11 directly upwards, starting from the cell heater 3 (as indicated by the exemplary connection to a positive pole of a voltage source), while the other connection is connected to the second electrical layer 2 .
  • the first metallic layer 1 is electrically insulated from the heating layer 31, the second electrical layer 2, which is itself electrically conductive, can be set to the other voltage level of the voltage supply, as indicated here by the minus sign.
  • the two electrical connections of the cell heater 3 can also be brought out of the cell housing 11 here. 8 shows a sectional side view of an energy store or a battery E with cell housings 11 of a plurality of battery cells electrically connected to one another.
  • the heating layers 31 are connected directly to the associated outer, second metallic layers 2 with an electrical connection, while the other connections are led out upwards. Since the first metallic layers 1 are electrically insulated from the heating layer 31, the second metallic layers 2 can be electrically connected (e.g. in series) and thus form one of the two conductors of the heating layers 31.
  • the other arrester is connected to the connections of the heating layers 31 brought out at the top.
  • the positive pole is connected to the second electrical layers 2, while the connections brought out at the top are connected to negative.
  • the selection of the voltage level and polarity as well as the selection of a DC or AC voltage for operating a cell heater 3 can in principle be freely selected.
  • a PWM supply is also possible.
  • a numerical specification can also include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded. reference list

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un boîtier de cellule (11) pour une cellule de batterie avec un dispositif de chauffage de cellule intégré (3), dans lequel un dispositif de chauffage de cellule plan en forme de couche (3) est appliqué sur une face plane (4) d'une première couche métallique (1), puis un empilement composite constitué d'au moins la première couche métallique (1) et du dispositif de chauffage de cellule (3) est plié de telle sorte qu'une autre face plane de la première couche métallique (1) forme une face interne du boîtier de cellule (11). Une batterie (E) comprend une pluralité de cellules de batterie qui comportent chacune un boîtier de cellule (11) de ce type, les secondes couches métalliques (2) des boîtiers de cellule (11) étant interconnectées électriquement. Un véhicule à commande électrique comprend au moins une batterie ayant au moins une cellule de batterie qui comprend un boîtier de cellule de ce type et/ou une batterie de ce type.
EP21786374.5A 2020-10-19 2021-09-29 Fabrication d'un boîtier de cellule pour une cellule de batterie et boîtier de cellule Pending EP4229709A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020127408.4A DE102020127408A1 (de) 2020-10-19 2020-10-19 Herstellen eines Zellgehäuses einer Batteriezelle sowie Zellgehäuse
PCT/EP2021/076775 WO2022083992A1 (fr) 2020-10-19 2021-09-29 Fabrication d'un boîtier de cellule pour une cellule de batterie et boîtier de cellule

Publications (1)

Publication Number Publication Date
EP4229709A1 true EP4229709A1 (fr) 2023-08-23

Family

ID=78078200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21786374.5A Pending EP4229709A1 (fr) 2020-10-19 2021-09-29 Fabrication d'un boîtier de cellule pour une cellule de batterie et boîtier de cellule

Country Status (5)

Country Link
US (1) US20230378563A1 (fr)
EP (1) EP4229709A1 (fr)
CN (1) CN116235346A (fr)
DE (1) DE102020127408A1 (fr)
WO (1) WO2022083992A1 (fr)

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CN116235346A (zh) 2023-06-06

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