EP4292158A1 - Procédé de fabrication d'une batterie lithium-ion et batterie lithium-ion - Google Patents

Procédé de fabrication d'une batterie lithium-ion et batterie lithium-ion

Info

Publication number
EP4292158A1
EP4292158A1 EP22713281.8A EP22713281A EP4292158A1 EP 4292158 A1 EP4292158 A1 EP 4292158A1 EP 22713281 A EP22713281 A EP 22713281A EP 4292158 A1 EP4292158 A1 EP 4292158A1
Authority
EP
European Patent Office
Prior art keywords
lithium
ion battery
volume compensation
compensation element
electrode arrangement
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
EP22713281.8A
Other languages
German (de)
English (en)
Inventor
Hyunchul Roh
Hideki Ogihara
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 EP4292158A1 publication Critical patent/EP4292158A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to a method for producing a lithium-ion battery and a lithium-ion battery.
  • lithium ion battery is used synonymously for all designations commonly used in the prior art for galvanic elements and cells containing lithium, such as lithium battery, lithium cell, lithium ion cell, lithium polymer cell and lithium ion accumulator. Specifically, rechargeable batteries (secondary batteries) are included.
  • battery and “electrochemical cell” are also used synonymously with the term “lithium ion cell”.
  • the lithium-ion battery can also be a solid-state battery, for example a ceramic or polymer-based solid-state battery.
  • Lithium ion batteries have at least two different electrodes, positive (cathode) and negative (anode). Each of these electrodes has at least one active material.
  • the cathode and the anode are arranged one above the other to form an electrode arrangement, for example in stacks, with a separator being used for electrical insulation between the cathode and the anode.
  • both the anode and the cathode must be able to accept and release lithium ions.
  • the absorption or release of the lithium ions can lead to a change in volume of the active material, with the extent of the change in volume being dependent on the respective active material.
  • anode active materials which come into question for lithium-ion batteries with high energy densities, show strong changes in volume. Controlling this change in volume is particularly important during the first charging process when the SEI (solid electrolyte interface) forms on the anode.
  • the volume changes that occur can lead to the formation of inhomogeneous areas in the anode or cathode, especially in a boundary area between the respective anode or cathode and an adjacent separator. For example, cavities can form in which the resulting gases accumulate.
  • Pressure can be applied to the electrode arrangement in order to reduce the extent of inhomogeneities occurring during charging processes due to volume changes or to completely eliminate them.
  • the object of the invention is to provide a lithium-ion battery that has a high energy density and a long service life. Furthermore, the object of the invention is to specify a method for producing such a lithium-ion battery.
  • the object of the invention is achieved by a method for producing a lithium-ion battery, comprising the following steps: a housing is provided and an electrode arrangement is introduced into the housing.
  • the electrode assembly is formed from alternating layers of a cathode and an anode, with the at least one anode being an anode active material contains, which includes a silicon and / or titanium-based component.
  • At least one flexible volume compensation element is arranged between the electrode arrangement and the housing, the volume compensation element comprising a shell and an inert gas accommodated within the shell or an electrolyte accommodated within the shell, and the volume compensation element counteracting an expansion of the electrode arrangement.
  • the case is sealed to form the lithium ion battery.
  • the lithium-ion battery is then charged, with the shell of the volume compensation element being opened when a target expansion of the electrode arrangement is reached, releasing the inert gas or the electrolyte.
  • the volume compensation element serves to prevent the occurrence of inhomogeneities within the electrode arrangement in that the volume compensation element exerts a force acting on the electrode arrangement when the volume of the electrode arrangement increases.
  • the volume compensation element presses on the electrode arrangement as soon as the latter increases in volume during a charging process, as is to be expected on the basis of the silicon and/or titanium-based component.
  • the magnitude of the acting force is essentially determined by the compressibility of the inert gas or electrolyte present within the shell of the volume compensation element.
  • the electrode assembly can expand in a controlled manner until a target expansion of the electrode arrangement
  • Electrode arrangement is achieved.
  • the target extension corresponds in particular to an expected maximum extension of the electrode arrangement. This means that, even over the service life of the lithium-ion battery, the electrode arrangement used cannot be expected to expand beyond the target expansion, apart from unavoidable minor fluctuations. Thus, once the target expansion has been reached for the first time, the occurrence of inhomogeneities is no longer to be expected to a significant extent. As soon as the electrode arrangement reaches its target extent, the shell of the volume compensation element is opened according to the invention and the inert gas or the electrolyte contained is released. In this way, the resulting size and position of the open volume compensation element and the electrode arrangement is known after the associated charging of the lithium-ion battery in order to optimize the cell design
  • the volume compensation element is arranged in particular in a dead volume of the housing.
  • the dead volume refers to an area within the housing in which only gaseous components are otherwise provided. Such dead volume are in known interpretations of
  • the silicon and/or titanium-based component of the anode active material is, in particular, an active material with a large change in volume when lithium is stored or removed. Accordingly, the silicon- and/or titanium-based component is the determining component for the change in volume of the anode active material and thus of the anode and the electrode arrangement that occurs during the charging or discharging process.
  • an anode active material shows a strong change in volume if, when absorbing 50% of the maximum reversibly intercalable molar amount of lithium, the volume of the anode active material increases by at least 10%, for example by at least 50%, and when releasing 50% of the maximum reversibly absorbable molar amount of lithium at least reduced by 10%, for example by at least 50%, in each case based on the volume before uptake or release of lithium.
  • the silicon and/or titanium based component can be selected from the group consisting of silicon, silicon suboxide, silicon-carbon composite, silicon alloys, titanium, titanium oxide, titanium-carbon composite and combinations thereof.
  • Such active materials are characterized by particularly high energy densities. However, these active materials show large changes in volume during the charging and discharging process.
  • the method according to the invention makes it possible to utilize the high energy densities of these active materials without their strong changes in volume having a negative effect on the stability of the electrode arrangement and on the service life of the lithium-ion battery.
  • the silicon and/or titanium-based component is present in particular in a proportion of 0.5 to 99% by weight, preferably 3 to 98% by weight, based on the total weight of the anode.
  • the inert gas can be selected from the group consisting of carbon dioxide, nitrogen, noble gases and a combination thereof.
  • Argon, neon or xenon, preferably argon, are particularly suitable as inert gases. Compatibility with the other components of the lithium-ion battery and the costs of the inert gas are decisive for the selection of the inert gas.
  • the electrolyte inside the shell of the volume compensation element is an electrolyte that is chemically compatible with the other components of the lithium-ion battery.
  • the electrolyte is preferably the same as that already used in the lithium-ion battery.
  • the electrolyte is conductive for lithium ions and can be a liquid that includes a solvent and at least one lithium conductive salt dissolved therein.
  • the solvent is preferably inert.
  • Suitable solvents are, for example, organic solvents such as ethylene carbonate (EC), propylene carbonate (PC), butylene carbonate, dimethyl carbonate (DMC),
  • DEC Diethyl Carbonate
  • EMC Ethyl Methyl Carbonate
  • Sulfolanes Sulfolanes
  • Ionic liquids can also be used as solvents. Such ionic liquids contain only ions.
  • Preferred cations which can be alkylated in particular, are imidazolium, pyridinium, pyrrolidinium, guanidinium, uronium, thiuronium, piperidinium, morpholinium, sulfonium, ammonium and phosphonium cations.
  • Examples of anions that can be used are halide, tetrafluoroborate, trifluoroacetate, triflate, hexafluorophosphate, phosphinate and tosylate anions.
  • ionic liquids examples are: N-methyl-N-propylpiperidinium bis(trifluoromethylsulfonyl)imide, N-methyl-N-butylpyrrolidinium bis(trifluoromethylsulfonyl)imide, N-butyl-N-trimethyl -ammonium bis(trifluoromethylsulfonyl)imide, triethylsulfonium bis(trifluoromethylsulfonyl)imide and N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethylsulfonyl)imide.
  • two or more of the above liquids can be used.
  • Preferred lithium conductive salts are lithium salts which have inert anions and which are preferably non-toxic. Suitable lithium salts are, in particular, lithium hexafluorophosphate (LiPFe), lithium tetrafluoroborate (L1BF4), lithium bis(fluorosulfonyl)imide (LiFSI) and mixtures of these salts.
  • LiPFe lithium hexafluorophosphate
  • L1BF4 lithium tetrafluoroborate
  • LiFSI lithium bis(fluorosulfonyl)imide
  • the shell of the volume compensation element can be made of any material that is compatible with the other components of the lithium-ion battery and with the inert gas or electrolyte accommodated within the shell.
  • the shell is preferably made of an electrically insulating material.
  • the volume compensation element can provide electrical insulation between the electrode arrangement and the housing.
  • no additional insulating layer has to be provided on the inside of the housing facing the shell.
  • the shell can be made of a plastic, for example polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), combinations and/or copolymers thereof.
  • a plastic for example polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), combinations and/or copolymers thereof.
  • the case is preferably opened when the lithium-ion battery is charged for the first time.
  • the initial loading is also referred to as the "Pre-Charge” step or as called formation.
  • the Pre-Charge step a particularly large increase in volume of the electrode arrangement is to be expected and the SEI is formed. It is therefore of particular importance for the resulting performance and service life of the lithium-ion battery to prevent the occurrence of inhomogeneities, as is made possible by the volume compensation element.
  • the inert gas released from the volume compensation element can be removed in a degassing step.
  • the inert gas released from the volume compensation element can be removed without additional effort by using the degassing step provided in known manufacturing processes after the first charging and discharging process to also remove the released inert gas is being used.
  • the envelope is opened when a limit pressure is reached inside the envelope.
  • the limit pressure corresponds to the target expansion of the electrode arrangement and is determined in particular via the material and the thickness of the cover, with a thinner cover resulting in a lower limit pressure in particular.
  • the case of the volume compensation element can be deformed during the charging of the lithium ion battery, the case coming into contact with an opening element through the deformation, which opens the case.
  • the opening element can be any element which, when interacting with the shell of the volume compensation element, reliably opens the latter.
  • the opening element is a nail, a protrusion or an edge within the housing.
  • the opening member is arranged in an expansion area of the case, the expansion area being an area inside the case in which the volume adjustment member is not arranged before charging the lithium ion battery and in which the volume adjustment member enters by deformation when charging the lithium ion battery.
  • each opening element can be provided. If several volume compensation elements are used, at least one associated opening element is provided in particular for each volume compensation element.
  • the cover can be opened in a weakened zone of the cover.
  • the weakened zone can be a mechanically less resistant part of the casing.
  • the casing has a smaller thickness and/or a notch in the weakened zone.
  • the weakened zone in particular interacts with the opening element when the lithium-ion battery is being charged.
  • the zone of weakness can be a portion of the casing that is more temperature sensitive than the rest of the casing.
  • Such a configuration is particularly advantageous if the target expansion of the electrode arrangement is only reached over the course of the service life of the lithium-ion battery and not within the first charging cycles.
  • the target expansion is only achieved through aging effects. Due to aging effects, a higher operating temperature of the electrode arrangement is to be expected when charging the lithium-ion battery, which ultimately results in the shell opening in the weakened zone.
  • the object of the invention is also achieved by a lithium ion battery that is manufactured according to the method described above.
  • the lithium-ion battery according to the invention is in particular a lithium-ion battery for use in a high-voltage storage device for a vehicle.
  • - Fig. 1 is a schematic representation of a first embodiment of the lithium-ion battery according to the invention before opening a volume compensation element
  • FIG. 2 shows a schematic representation of the lithium-ion battery according to the invention according to FIG. 1 after opening the volume-compensating element
  • Fig. 5 is a block diagram of the method according to the invention for manufacturing the lithium-ion batteries of Figs. 1 to 4.
  • a lithium-ion battery 10 is shown schematically according to an embodiment of the invention.
  • the lithium-ion battery 10 comprises a housing 11, for example made of aluminum and/or stainless steel, and an electrode arrangement 12 arranged within the housing 11.
  • the electrode arrangement 12 comprises anodes 14 and cathodes 16.
  • the anodes 14 and the cathodes 16 are arranged alternately in an electrode stack, with a separator 18 being arranged between each anode 14 and cathode 16.
  • Each of the anodes 14 includes an anode support foil 20, which is copper foil in the illustrated variant, and each of the cathodes 16 includes a cathode support foil 22, which in the illustrated variant is aluminum foil.
  • the anodes 14 have an anode film 24 on both sides of the respective anode carrier foil 20 and the cathodes 16 have a cathode film 26 on both sides of the respective cathode carrier foil 22 .
  • the cathode films 26 of the cathodes may comprise any cathode active material known in the art. These include, for example, UC0O2, lithium nickel cobalt manganese compounds (known by the abbreviation NCM or NMC), lithium nickel cobalt aluminum oxide (NCA), lithium iron phosphate, other olivine compounds and lithium manganese Oxide Spinel (LMO). So-called over-lithiated layered oxides (OLO) can also be used.
  • the cathode active material can also contain mixtures of two or more of the lithium-containing compounds mentioned.
  • the anode films 24 of the anodes 14 comprise an anode active material which comprises a silicon and/or titanium-based component which is selected in particular from the group consisting of silicon, silicon suboxide, silicon-carbon composite, silicon alloys, titanium, titanium oxide, titanium-carbon composite and combinations thereof.
  • anodes 14 and cathodes 16 can deviate from the number present in the embodiment shown.
  • the electrode assembly has anodes 14 at its respective ends along the sequence of anodes 14 and cathodes 16, respectively.
  • cathodes 16 could also be present at the respective ends or an anode 14 at one end and a cathode 16 at the opposite end.
  • two anodes 14 form the respective ends of the electrode assembly 12, since such electrode assemblies 12 are easier to manufacture, which can increase manufacturing speed.
  • a flexible volume compensation element 28 is arranged at both ends of the electrode arrangement 12 between the electrode arrangement 12 and the housing 11 .
  • the volume compensation element 28 comprises a shell 30 and an inert gas 32 accommodated within the shell 30.
  • the shell 30 is made of an electrically insulating material, for example a plastic, so that the electrode arrangement 12 is electrically insulated from the housing 11 .
  • the inert gas 32 can be selected from the group consisting of carbon dioxide, nitrogen, noble gases, and a combination thereof.
  • Argon, neon or xenon, preferably argon, are particularly suitable as inert gases.
  • an electrolyte (not shown) can also be present inside the shell 30 .
  • the lithium-ion battery 10 also has electrical contacts 34 which are electrically connected to the electrode arrangement 12 via conductors (not shown) and are used for making electrical contact with the lithium-ion battery 10 .
  • the anodes 14, specifically the anode films 24, include an anode active material that includes a silicon and/or titanium based component.
  • the anode active material of the anode films 24 of the anodes 14 Due to the silicon and/or titanium-based component, the anode active material of the anode films 24 of the anodes 14 and, as a result, the entire electrode arrangement 12 shows a strong change in volume when lithium ions are stored or removed, i.e. during charging and discharging processes of the lithium-ion battery 10.
  • the change in volume occurs essentially in the directions of expansion indicated by the arrows Pi and P2 in FIG Volume compensation elements 28 and those housing sections in which the volume compensation elements 28 are in contact with the housing 11 .
  • the volume compensation elements 28 Due to the inert gas 32 contained within the shell 30, the volume compensation elements 28 have a limited compressibility, so that they act on the electrode arrangement 12 with a force that essentially opposes the respective direction of expansion Pi or P2 when the electrode arrangement 12 expands.
  • This opposing force exerts a uniform pressure on the anodes 14, especially on the anode films 24, which prevents or at least reduces the formation of inhomogeneities due to the volume change within the anodes 14.
  • volume compensation elements 28 are not so great that an expansion of the electrode arrangement would be completely prevented. Rather, with increasing volumetric expansion of the electrode arrangement 12, the flexible volume compensation element 28 is deformed.
  • the cover 30 of the volume compensation element 28 is opened.
  • the shell bursts open or tears open.
  • a limiting pressure is generated inside the cover 30, which leads to the cover 30 opening.
  • the inert gas 32 is discharged into the interior of the housing 11 .
  • the resulting state of the lithium ion battery 10 is shown schematically in FIG.
  • the opened shell 30 remains as electrical insulation between the electrode arrangement 12 and the housing 11.
  • the lithium-ion battery according to the invention has no or at least reduced inhomogeneities within the electrode arrangement 12, although an anode active material that changes greatly in volume is used. This results in a powerful lithium-ion battery with a long service life.
  • 3 shows a second embodiment of the lithium-ion battery 10 according to the invention.
  • the second embodiment essentially corresponds to the first embodiment, so that only the differences will be discussed below. Components that are the same or have the same effect are provided with the same reference symbols.
  • the lithium ion battery 10 has two opening members 36, which are in the form of a nail in the embodiment shown.
  • the opening elements 36 are also possible, for example projections or edges can be provided as opening elements 36 .
  • the opening elements 36 are arranged inside the housing 11 and each extend into an expansion area 38 in which the flexible volume compensation element 28 expands as soon as it is deformed by the change in volume of the electrode arrangement 12 .
  • Each of the volume compensation elements 28 is associated with an opening element 36 and upon reaching the target expansion
  • Electrode assembly 12 opened by interaction with the respectively associated opening element 36.
  • the nail pierces the shell 30 of the volume compensation element 28.
  • Fig. 4 is a third embodiment of the invention
  • the third embodiment essentially corresponds to the first and second embodiment, so that only the differences will be discussed below. Components that are the same or have the same effect are provided with the same reference symbols.
  • the volume compensation element 28 has a weakened zone 40 .
  • the shell 30 of the volume compensation element 28 has a smaller wall thickness.
  • the weakened zone 40 is a predetermined breaking point at which the sleeve 30 is preferably opened.
  • volume compensation elements 28 can be opened by reaching the limit pressure and another of the volume compensation elements 28 can be opened by interaction with an opening element 36 .
  • a method according to the invention for producing the lithium-ion battery 10 according to the invention is described below.
  • the housing 11 is prepared (step S1 in Fig. 5).
  • the electrode assembly 12 described above is placed in the case 11 (step S2 in FIG. 5).
  • the previously described volume compensation elements 28 are arranged between the electrode arrangement 12 and the housing 11 (step S3 in FIG. 5) and the housing 11 is closed to form the lithium-ion battery 10 (step S4 in FIG. 5).
  • the lithium-ion battery 10 is charged, the shell 30 of the volume compensation element 28 being opened when the target expansion of the electrode arrangement 12 is reached, releasing the inert gas 32 or the electrolyte (not shown) (step S5 in FIG. 5).
  • a lithium-ion battery 10 as shown in FIG. 1 has already been produced using the method according to the invention, ie the casing 30 of the volume compensation element 28 has not yet been opened.
  • the lithium-ion battery 10 can already be used at this point in time, with the case 30 only being opened at a later point in time during any charging process of the lithium-ion battery 10 .
  • the shell is preferably already opened during a charging process that is still being carried out in the manufacturing process of the lithium-ion battery 10, for example in the pre-charge step or during the formation.
  • the electrode arrangement 12 already achieves its target expansion during production and not only during later operation of the lithium-ion battery 10 .
  • the inert gas released from the shell 30 can be removed in an optional degassing step before the lithium-ion battery 10 is operated.

Landscapes

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

Abstract

Procédé de fabrication d'une batterie lithium-ion (10), consistant à prendre un boîtier (11) et à placer un système d'électrodes (12) dans ce boîtier (11). Le système d'électrodes (12) est formé de couches alternées d'une cathode (16) et d'une anode (14), ladite anode (14) contenant un matériau actif d'anode qui comprend un composant à base de silicium et/ou de titane. Au moins un élément de compensation de volume (28) flexible est disposé entre le système d'électrodes (12) et le boîtier (11), l'élément de compensation de volume (28) comprenant une enveloppe (30) et un gaz inerte (32) ou un électrolyte situé à l'intérieur de l'enveloppe (30), et l'élément de compensation de volume (28) s'opposant à une dilatation du système d'électrodes (12). Le boîtier (11) est scellé de sorte que la batterie lithium-ion (10) est formée. La batterie lithium-ion (10) est ensuite chargée et lorsqu'une dilatation cible du système d'électrodes (12) est atteinte, l'enveloppe (30) de l'élément de compensation de volume (28) est ouverte pour libérer le gaz inerte (32) ou l'électrolyte. L'invention concerne en outre une batterie lithium-ion (10).
EP22713281.8A 2021-02-11 2022-01-25 Procédé de fabrication d'une batterie lithium-ion et batterie lithium-ion Pending EP4292158A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021103172.9A DE102021103172A1 (de) 2021-02-11 2021-02-11 Verfahren zum Herstellen einer Lithiumionenbatterie sowie Lithiumionenbatterie
PCT/EP2022/051554 WO2022171425A1 (fr) 2021-02-11 2022-01-25 Procédé de fabrication d'une batterie lithium-ion et batterie lithium-ion

Publications (1)

Publication Number Publication Date
EP4292158A1 true EP4292158A1 (fr) 2023-12-20

Family

ID=80953445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22713281.8A Pending EP4292158A1 (fr) 2021-02-11 2022-01-25 Procédé de fabrication d'une batterie lithium-ion et batterie lithium-ion

Country Status (5)

Country Link
US (1) US20240128522A1 (fr)
EP (1) EP4292158A1 (fr)
CN (1) CN116830352A (fr)
DE (1) DE102021103172A1 (fr)
WO (1) WO2022171425A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4876468B2 (ja) 2005-07-27 2012-02-15 パナソニック株式会社 非水電解質二次電池
DE102011015830A1 (de) * 2011-04-01 2012-10-04 Li-Tec Battery Gmbh Elektrochemische Zelle zum Speichern elektrischer Energie
DE102014201836A1 (de) * 2014-02-03 2015-08-06 Robert Bosch Gmbh Galvanische Batteriezelle, insbesondere wiederaufladbare Lithium-Schwefel-Batteriezelle, mit Volumenausgleichselement
DE102014217425A1 (de) 2014-09-01 2016-03-03 Robert Bosch Gmbh Spannvorrichtung für Batteriezellen sowie Batteriemodul, Batterie, Batteriesystem, Fahrzeug und Verfahren zur Herstellung eines Batteriemoduls
DE102018204220A1 (de) 2018-03-20 2019-09-26 Volkswagen Aktiengesellschaft Batterie

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Publication number Publication date
WO2022171425A1 (fr) 2022-08-18
US20240128522A1 (en) 2024-04-18
DE102021103172A1 (de) 2022-08-11
CN116830352A (zh) 2023-09-29

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