WO2014072127A1 - Élément accumulateur comprenant une plaque de recouvrement de boîtier dotée d'un orifice de remplissage fermé par un rivet - Google Patents

Élément accumulateur comprenant une plaque de recouvrement de boîtier dotée d'un orifice de remplissage fermé par un rivet Download PDF

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Publication number
WO2014072127A1
WO2014072127A1 PCT/EP2013/070308 EP2013070308W WO2014072127A1 WO 2014072127 A1 WO2014072127 A1 WO 2014072127A1 EP 2013070308 W EP2013070308 W EP 2013070308W WO 2014072127 A1 WO2014072127 A1 WO 2014072127A1
Authority
WO
WIPO (PCT)
Prior art keywords
rivet
battery cell
cover plate
filling opening
container
Prior art date
Application number
PCT/EP2013/070308
Other languages
German (de)
English (en)
Inventor
Markus Schorn
Kai Hartmann
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to CN201380058338.6A priority Critical patent/CN104781952A/zh
Publication of WO2014072127A1 publication Critical patent/WO2014072127A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—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
    • 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
    • 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
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • 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
    • H01M50/19—Sealing members characterised by the material
    • H01M50/193—Organic 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • 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
    • B60L50/66—Arrangements of batteries
    • 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
    • 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 present invention relates to a battery cell, in particular a lithium-ion battery cell.
  • the invention further relates to a motor vehicle with such a battery cell.
  • Battery cells sometimes referred to as accumulator cells, are used for the chemical storage of electrically provided energy. Even today, battery cells are used to power a variety of mobile devices. In the future, battery cells are to be used inter alia for supplying energy to mobile electric vehicles or hybrid vehicles, on land as well as to water, or for stationary intermediate storage of electrical energy originating from alternative energy sources.
  • Battery cells used with a prismatic, such as a cuboid-like shape are battery cells used with a prismatic, such as a cuboid-like shape.
  • a cost for the assembly of a battery cell and associated costs can be reduced.
  • a battery cell in particular a lithium-ion battery cell having at least one winding element, an electrolyte, two current collector and a housing.
  • the winding element consists of a wound stack of a first foil coated with anode material, for example of copper, a second foil coated with cathode material, for example of aluminum, and two plastic foils serving as diaphragms.
  • One of the current collector is electrically conductively connected, for example welded, to the first foil of the winding element.
  • the second current collector is electrically conductively connected to the second foil of the winding element.
  • the housing has a container and a lid assembly.
  • the container has an opening through which the winding element and the two current collectors can be introduced into the housing during the manufacture of the battery cell.
  • the lid assembly is adapted to complete the opening of the container gas-tight and pressure-tight.
  • the lid assembly inter alia, a cover plate, which largely the opening in the container can close and which can be connected for hermetic sealing of the housing with the container, for example by a weld.
  • the cover plate has, inter alia, a filling opening, through which electrolyte can be filled into the housing.
  • Battery cell is characterized in that the filling opening is closed with a rivet.
  • Winding element is introduced with the current collectors mounted therein in the still open-topped container of the housing and then hermetically sealed the opening of the container using the lid assembly.
  • the cover plate When attaching the lid assembly, the cover plate is first connected to the container, for example by welding. The filling opening provided in the cover plate then charges electrolyte into the container so that it can wet the winding element received therein. Then the must
  • an existing example of metal or plastic ball is pressed onto the filling opening in conventional battery cells and welded directly or via a metallic plate with the edge of the filling opening.
  • a welding process is a complex work process and may require expensive welding robots and welding processes, among other things.
  • a laser welding process often requires a large number of work steps and is therefore comparatively complex and cost-intensive.
  • a thermal stress is exerted during welding, which can be problematic in the desired thin-walled lid designs.
  • the filling opening is closed with a rivet.
  • a standardized, commercially available rivet can be used.
  • the rivet must be arranged so that a shaft of the rivet extends through the filling opening.
  • the radial diameter of the expansion of the rivet at a first or upper end of the shaft must be greater than the diameter of the filling opening.
  • This overlapping of the rivet formed as a riveting head over the edge of the filling opening should ensure sufficient overlap between the expansion or the rivet head and the surface of the cover plate. The higher the contact force of the rivet head to the surface of the cover plate and the larger the overlapping surface or contact surface between the two elements, the better the possible sealing effect.
  • An advantage of the rivet lies in the simplicity of the method and the wide spread of this joining technique and the resulting relatively low cost.
  • Another advantage of the rivet is that the riveting of the filler opening can be done without the application of force on the cover plate. Since the cover plates used can only have a very small thickness of the order of 1 mm or less and, in addition, materials with low strength can be used, only closure methods are applicable in which no or only very small forces act on the cover plate during closing.
  • At least one sealing ring is interposed between a widening of a shank of the rivet and the cover plate for sealing the filling opening.
  • a sealing ring can here as an additional element for increasing the
  • sealing effect of the gap between the expansion of the rivet shank and the surface of the cover plate are understood.
  • Advantage of the use of a sealing ring is a further improved sealing effect to prevent leakage of electrolyte from the battery cell.
  • the sealing ring can be designed so that the inner diameter of the sealing ring is smaller than the diameter of the expansion and typically slightly larger than that
  • Diameter of the shaft so that the sealing ring can be pressed by the widening of the rivet on the surface of the cover plate.
  • the sealing ring and the shaft are preferably arranged concentrically.
  • the sealing ring is pushed onto the shank of the rivet before the rivet is introduced into the filling opening. For this it is necessary that the diameter of the sealing ring is larger than the diameter of the shaft.
  • the sealing ring, the rivet and the cover plate made of the same material.
  • the rivet is made of an electrolyte-resistant plastic.
  • the sealing ring is made of an electrolyte-resistant plastic.
  • electrolyte-resistant elastomers can be used here.
  • Such an elastomer may contain, for example, a fluoropolymer.
  • the Dupont company markets an elastomer resistant to many electrolytes under the brand name Viton, sometimes with the addition FKM.
  • a sealing ring can be located on both sides of the cover plate at the widenings of the rivet. In this way, the sealing effect can be increased again. Also, instead of a single sealing ring several sealing rings can be combined to increase the sealing effect.
  • the sealing ring may be designed to be elastic and thereby in the unstretched state before being pushed onto the shank of the rivet have the same or slightly smaller inner diameter than the shank of the rivet.
  • the rivet is a blind rivet.
  • blind rivet Advantage of a blind rivet is that the riveting of only one side of the component to be riveted can be done without a tool on the other side of the rivet must be recognized. In practice, this is often a special blind rivet used.
  • the blind rivet is a cup rivet.
  • a cup rivet is to be understood as a special embodiment of the blind rivet in which the lower end of the shaft of the rivet is closed and therefore forms the shape of a cup.
  • Battery cell is that the rivet on the side facing the container interior is closed, thereby closing the inlet opening gas-tight and pressure-tight. Compared to other forms of riveting, it still offers the advantage that no riveting or residual parts in the.
  • the battery cell has a winding element of a wound stack of a first film coated with anode material, a second material coated with cathode material and two as
  • the battery cell furthermore has an electrolyte, two current collectors, one of which is electrically conductively connected to the first film and one to the second film.
  • Battery cell further comprises a housing with a container and a
  • Cover assembly formed for gas-tight and pressure-tight sealing of the opening of the container and has a cover plate.
  • the cover plate has a filling opening for filling electrolyte into the housing.
  • Method comprises the step of gas-tight and pressure-tight sealing of the filling opening by riveting.
  • the riveting comprises the following steps:
  • the shank of a rivet is inserted into the filling opening, wherein the rivet in the inserted state at a first end of the shank on a side facing away from the container side of the cover plate has a widening whose radial diameter is greater than the diameter of the filling opening.
  • Diameter of the shank of the rivet is smaller than the diameter of the filling opening.
  • a Rohniet which has a rivet head in the form of a widening on one side of the shaft, with the shaft inserted into the filling opening, so that the rivet head or the widening with the surface of the Cover plate comes into contact.
  • a sealing ring for example, this is previously pushed onto the shank of the rivet, in order then to be located between the widening of the rivet and the surface of the cover plate.
  • a second end of the shank is widened on a side of the cover plate facing the container so that the widening of the first end of the shank, together with the widening of the second end of the shank and the shank, closes the filling opening in a gastight and pressure-tight manner.
  • the radial diameter of the second expansion is greater than the diameter of the filling opening.
  • a motor vehicle has a battery cell according to the present invention.
  • the battery cell according to the invention can be used for a large number of other mobile or stationary applications. These include, for example, maritime applications or e-bikes as well as other sports or leisure equipment in the mobile sector.
  • Fig. 1 shows an exploded view of a lithium-ion battery cell.
  • 2 shows a filling opening with a rivet and a sealing ring before riveting a battery cell according to an embodiment of the invention in cross section.
  • Fig. 3 shows a filling opening with a rivet and a sealing ring after riveting a battery cell according to an embodiment of the invention in cross section.
  • FIG. 4 shows a filling opening with a rivet and a sealing ring arranged on the inside of the cover plate after the riveting of a battery cell according to an embodiment of the invention in cross section.
  • FIG. 5 shows a filling opening with a rivet without a sealing ring after riveting a battery cell according to an embodiment of the invention in cross section.
  • Fig. 6 shows a motor vehicle with a battery according to an embodiment of the present invention.
  • Fig. 1 shows a conventional lithium-ion battery cell in a
  • the battery cell 1 has at least one winding element 3 with a wound stack 5 of a copper foil which is coated with anode material and an aluminum foil which is coated with cathode material and interposed plastic films which serve as diaphragms.
  • the copper foil and the aluminum foil are stacked slightly offset one above the other in the opposite direction so that the copper foil on a narrow side and the aluminum foil on an opposite narrow side project slightly beyond a respective edge of the winding element.
  • a current collector 7 made of copper is welded, so that this pantograph with the anode of
  • Winding element is electrically connected.
  • a second current collector 9 made of aluminum is welded to make electrical contact with the cathode of the winding element 3.
  • the winding element 3 provided with the two current collectors 7, 9 is then introduced through an opening 14 into an upwardly open, cuboidal container 13.
  • the container 13 is then closed with a lid assembly 15, which in addition to a cover plate 23 still includes several other components.
  • the cover plate 23 is thereby with its edge to a
  • the container 13 as well as the cover plate 23 are formed of sheet metal to withstand, inter alia, the chemically aggressive electrolyte can.
  • the cover plate 23 has inter alia a filling opening 25, through which electrolyte can be filled into the interior of the housing 11 formed by the container 13 and the cover assembly 15, after the cover plate 23 has been attached to the container 13.
  • the filling opening 25 may be formed, for example, with a round cross section and have a diameter of about 5 mm.
  • the filling opening 25 is closed by means of a ball 26, which has a slightly larger diameter than the
  • a seal assembly 30 for sealing a filler opening of a battery cell according to an exemplary embodiment is shown
  • a shaft 35 of a rivet 31 added in a filling opening 25 is a shaft 35 of a rivet 31 added.
  • the rivet 31 has on its upper side a widening 32, which has an abutment region 49 which is in contact via a sealing ring 34 with a surface of the cover plate 23.
  • the rivet as shown in Fig. 2, has only one widening 32 before riveting.
  • the other end of the rivet can be seen as an extension of the shank 35. This allows one
  • the rivet has an elongated cavity 36 which extends in the axial direction through the interior of the rivet.
  • the second end of the rivet shown below, is at its end
  • the cavity 36 is thus not continuous, but only open at an upper end and closed at a lower end.
  • the cavity 36 has a widening 44. This widening 44 serves to receive a widened end 40 of a spike
  • This mandrel 38 which is passed through the elongated cavity 36.
  • This mandrel 38 has at the point 42 a predetermined breaking point. Is used in the process of
  • Cavity 36 increases the drag force such that the mandrel breaks at location 42 and the broadened portion 40 of mandrel 38 remains in the resulting expansion.
  • Vernietvorgang incurred and later fall into the container.
  • Fig. 3 the cover plate and the rivet / sealing ring assembly 30 is shown after riveting.
  • the rivet closes over the contact surfaces 49 and 48 and the sealing ring 34, the opening 25 in the cover plate 23. In the opening
  • the sealing effect can be influenced by the fact that a contact as close as possible and contiguous contact between the contact surfaces 49 and 48 and the sealing ring 34 and the cover plate 23 is provided. It comes to gas-tight and pressure-tight
  • FIG. 4 a further exemplary embodiment of the invention is shown, in which the sealing ring 34 on the inner or lower side of the cover plate 23 between the lower widening 33 of the rivet 31, in particular the
  • FIG. 5 shows an exemplary embodiment according to the invention, in which the
  • FIG. 6 shows a motor vehicle 100 with a battery 102 which is composed of a plurality of the battery cells 1 described above.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

L'invention concerne un élément accumulateur, en particulier un élément d'une batterie lithium-ions, comprenant un élément bobiné, deux bornes de connexion et un électrolyte logés dans un boîtier. Le boîtier se compose d'un bac et d'un système de couvercle. Le système de couvercle comprend entre autres une plaque de recouvrement qui est reliée fixement au bac après que les composants internes de l'élément accumulateur y ont été introduits. Selon l'invention, un orifice de remplissage (25) ménagé dans la plaque de recouvrement (23) afin de permettre l'introduction de l'électrolyte à l'intérieur du boîtier est obturé au moyen d'un rivet (31).
PCT/EP2013/070308 2012-11-08 2013-09-30 Élément accumulateur comprenant une plaque de recouvrement de boîtier dotée d'un orifice de remplissage fermé par un rivet WO2014072127A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201380058338.6A CN104781952A (zh) 2012-11-08 2013-09-30 具有带有铆接的填充开口的壳体盖板的电池单池

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012220386.9 2012-11-08
DE102012220386.9A DE102012220386A1 (de) 2012-11-08 2012-11-08 Batteriezelle mit Gehäusedeckplatte mit vernieteter Einfüllöffnung

Publications (1)

Publication Number Publication Date
WO2014072127A1 true WO2014072127A1 (fr) 2014-05-15

Family

ID=49253320

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/070308 WO2014072127A1 (fr) 2012-11-08 2013-09-30 Élément accumulateur comprenant une plaque de recouvrement de boîtier dotée d'un orifice de remplissage fermé par un rivet

Country Status (3)

Country Link
CN (1) CN104781952A (fr)
DE (1) DE102012220386A1 (fr)
WO (1) WO2014072127A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4142043A1 (fr) 2021-08-26 2023-03-01 Volkswagen Ag Procédé de fabrication d'un élément de batterie
EP4224623A1 (fr) * 2022-02-07 2023-08-09 Samsung SDI Co., Ltd. Batterie secondaire cylindrique

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015002572A1 (de) * 2015-02-27 2016-09-01 Wabco Europe Bvba Scheibenbremse, insbesondere für Nutzfahrzeuge, und Bremssattel einer solchen Scheibenbremse
CN111490192B (zh) 2020-06-29 2020-09-29 江苏时代新能源科技有限公司 套筒组件、盖板组件、电池及用电装置
JP7399147B2 (ja) * 2021-10-08 2023-12-15 プライムプラネットエナジー＆ソリューションズ株式会社 電池およびその製造方法
DE102022001430A1 (de) 2022-04-25 2023-10-26 Mercedes-Benz Group AG Gehäuse für eine elektrochemische Einzelzelle

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US20060105236A1 (en) * 2004-11-18 2006-05-18 Byd Company Limited Lithium ion secondary batteries
US20110072648A1 (en) * 2009-09-30 2011-03-31 Sanyo Electric Co., Ltd. Method for manufacturing sealed battery

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US8940422B2 (en) * 2005-03-18 2015-01-27 Toyota Jidosha Kabushiki Kaisha Sealed battery
CN201041812Y (zh) * 2007-12-08 2008-03-26 深圳市比克电池有限公司 一种电池盖板组件及电池
CN101983447B (zh) * 2009-06-19 2013-12-04 丰田自动车株式会社 电池、搭载有该电池的车辆和设备
CN201681982U (zh) * 2010-05-13 2010-12-22 山东神工宏全模具有限公司 动力锂离子电池防爆盖板

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Publication number Priority date Publication date Assignee Title
US20060105236A1 (en) * 2004-11-18 2006-05-18 Byd Company Limited Lithium ion secondary batteries
US20110072648A1 (en) * 2009-09-30 2011-03-31 Sanyo Electric Co., Ltd. Method for manufacturing sealed battery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4142043A1 (fr) 2021-08-26 2023-03-01 Volkswagen Ag Procédé de fabrication d'un élément de batterie
DE102021209413A1 (de) 2021-08-26 2023-03-02 Volkswagen Aktiengesellschaft Verfahren zur Herstellung einer Batteriezelle
EP4224623A1 (fr) * 2022-02-07 2023-08-09 Samsung SDI Co., Ltd. Batterie secondaire cylindrique

Also Published As

Publication number Publication date
CN104781952A (zh) 2015-07-15
DE102012220386A1 (de) 2014-05-08

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