WO2014053267A1 - Cellule de batterie dotée d'une plaque de recouvrement fixée par collage dans le boîtier - Google Patents

Cellule de batterie dotée d'une plaque de recouvrement fixée par collage dans le boîtier Download PDF

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Publication number
WO2014053267A1
WO2014053267A1 PCT/EP2013/066849 EP2013066849W WO2014053267A1 WO 2014053267 A1 WO2014053267 A1 WO 2014053267A1 EP 2013066849 W EP2013066849 W EP 2013066849W WO 2014053267 A1 WO2014053267 A1 WO 2014053267A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery cell
container
cover plate
housing
adhesive
Prior art date
Application number
PCT/EP2013/066849
Other languages
German (de)
English (en)
Inventor
Oliver Gerundt
Markus Feigl
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 CN201380052079.6A priority Critical patent/CN104685661B/zh
Publication of WO2014053267A1 publication Critical patent/WO2014053267A1/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
    • H01M10/05—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
    • 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
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
    • 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
    • H01M50/147—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
    • 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, among other things, to supply energy to mobile electric vehicles or hybrid vehicles, on land as well as to water, or for stationary temporary storage of alternative energy sources
  • Energy sources derived electrical energy are used.
  • 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.
  • battery cells in particular lithium-ion battery cells, and further in particular battery cells with prismatic shape.
  • battery cells usually have a complex structure, in which the assembly of the entire battery cell a variety of different items and a variety of
  • Battery cell housing with a cover plate of the container closing lid assembly cohesively and thus hermetically sealed.
  • a battery cell in particular a lithium-ion battery cell having at least one winding element, an electrolyte, two current collector and a prismatic shaped housing.
  • the winding element has a wound stack of a first film coated with anode material, a second film coated with cathode material, and two plastic films serving as diaphragms.
  • the housing consists of a container and a
  • the container in this case has an opening through which the winding element and the two current collector can be introduced during the manufacture of the battery cell in the housing.
  • the lid assembly is adapted to the opening of the container gas-tight and pressure-tight complete and has a disposed in the opening of the container cover plate.
  • the battery cell is characterized in that the cover plate is held in the opening of the container by means of an adhesive, wherein a sealing arrangement is provided such that is prevented in the
  • Housing filled electrolyte comes into contact with the adhesive.
  • a cover plate is usually in the too
  • a laser welding process can be used.
  • the cohesive connection which forms during welding can bring about a hermetic sealing of the cover plate relative to the container.
  • Such a hermetic seal is required in order to prevent electrolyte absorbed in the container from escaping from the battery cell or harmful moisture from the outside being able to penetrate into the interior of the housing of the battery cell.
  • welding beads also known as welding beads
  • This Sch spawülste can partially over the housing of the battery cell survive. If multiple battery cells are to be placed in a package or module, such weld beads can prevent adjacent battery cells from fitting smoothly with their housing. If the outer surfaces of the housings of adjacent battery cells can not rest against each other over the entire surface, correct mounting of the battery cells into a package or cell module can be made more difficult.
  • the housing of a battery cell can deform due to the heat released during a welding process. Such deformation, in turn, can lead to problems in mounting battery cells to a cell module.
  • the cover plate no longer be welded at its edge to the side walls of the container but to fix the cover plate in the opening of the container by means of an adhesive.
  • the cover plate can be introduced into the opening of the container and between a side edge of the cover plate and an inner surface of the container an adhesive
  • this adhesive ensures that the cover plate in the opening of the container is mechanically held so tight that even at an elevated internal pressure within the
  • An adhesive used to bond the sealing plug to the cover plate may be a microencapsulated adhesive.
  • microencapsulated adhesives contain tiny capsules filled with an adhesive substance.
  • the microencapsulated adhesive can be applied to surfaces to be bonded to the cover plate and / or the inner surface of the container in the region of the opening prior to assembly of the battery cell. When the exact insertion of the cover plate in the opening of the container, the microencapsulation is destroyed, so that the adhesive is released and after curing, the surfaces to be bonded mechanically stable.
  • Microencapsulated adhesives are also used, for example, for securing screwed connections against independent loosening.
  • An example of a microencapsulated adhesive is sold under the trademark Loctite®.
  • the cover plate can project into the housing at its edge
  • the projection of the cover plate may extend substantially parallel to the inner surface of the container and, in the assembled state of the battery cell, lie flat against this inner surface as directly as possible. A bond between the edge of the
  • Cover plate and the inner surface of the housing can thus surround the cover plate annular and thereby ensure a reliable hold of the cover plate within the container opening.
  • the cover plate in a second portion, relative to the first portion of the projection, which is glued to the inner surface of the container, closer to the interior of the housing is arranged to have a sealing arrangement in the form of a sealing bead.
  • the sealing bead can be provided along the entire projection.
  • the sealing bead can surround the cover plate at the peripheral edge completely annular and for a reliable seal between the
  • the sealing bead may be formed as a separate O-ring.
  • Such an O-ring can be provided as a separate structural component and be mounted on the projection of the cover plate before or during assembly of the battery cell.
  • a groove is provided for this purpose in the projection, in which the O-ring can be inserted in a form-fitting manner.
  • the sealing bead may be formed by means of a sealing lip which is injection-molded onto the projection of the cover plate.
  • a plastic can be attached to the cover plate, for example, by an injection molding process, which acts as a sealing lip due to its elasticity and geometry.
  • the sealing arrangement in particular the sealing bead described above, can be designed with an elastomer resistant to the electrolyte.
  • Such an elastomer may contain, for example, a fluoropolymer.
  • Fig. 1 shows an exploded view of a lithium-ion battery cell.
  • Figure 2 shows a package of several juxtaposed
  • Figure 3 shows a cross section through a housing of a battery cell according to an embodiment of the present invention.
  • Figure 4 shows a cross section through a housing of a battery cell according to an alternative embodiment of the present invention.
  • FIG. 5 shows a motor vehicle with a battery according to an embodiment of the present invention.
  • the figures are only schematic and not to scale. Like reference numerals designate the same or the same effect in the figures
  • Fig. 1 shows a conventional lithium-ion battery cell in a
  • the battery cell consists of a plurality of individual components, which are kept separately and must be assembled consuming during manufacture. Only the components necessary for the understanding of embodiments of the invention and their features are described herein, a description of the remaining components of the battery cell is omitted.
  • the battery cell 1 has a winding element 3 with a wound stack 5 of a copper foil, which is coated with anode material, and a
  • Aluminum foil which is coated with cathode material, and intervening plastic films, which serve as diaphragms on.
  • current collectors 7, 9 are welded to the copper foil and the aluminum foil, so that the current collectors are electrically connected to the anode and the cathode of the winding element.
  • the winding element 3 is introduced together with the two current collectors 7, 9 in a sealed housing 11, in which the electrolyte is filled.
  • the cuboid housing 11 consists of an upwardly open container 13 and a top opening 14 of the container 13 tightly closing lid assembly 15.
  • the lid assembly 15 contains as a main component a cover plate 23 which is formed so that it into the opening 14 of the container 13th fits and can be welded at its edge with an inner surface of this container 13.
  • an outer edge 27 of the cover plate 23 is bent downward, that is, toward the interior of the container 13 or toward the bottom thereof, so that an outwardly protruding projection 29 forms on an outer circumference of the cover plate 23 ,
  • the projection 29 stands transversely, preferably at right angles, from the otherwise essentially flat cover plate 23.
  • the projection 29 forms an annular surface whose dimensions are chosen so that the projection 29 at its
  • a layer of adhesive 31 is arranged.
  • the adhesive 31 may in advance on the outside of the
  • Projection 29 and / or the inner surface 37 are applied.
  • the adhesive 31 is in the form of a layer with, for example, one Width of a few millimeters applied in order to achieve a large-scale and thus stable bonding between the cover plate 23 and the container 13 can.
  • an encapsulated adhesive is preferably used, which can be applied in advance at least on one of the surfaces to be bonded and during insertion of the cover plate 23 in the opening
  • a sealing arrangement 32 in the form of a sealing bead 33 is arranged on the projection 29.
  • the sealing bead 33 is formed here with a separate O-ring 41.
  • the O-ring 41 is circumferential in a in the projection 29
  • the O-ring 41 is made of a plastic, such as an elastomer, on the one hand sufficiently elastic to provide a reliable seal between the projection 29 of the cover plate 23 and the inner surface 37 of the container 13, and on the other hand sufficiently resistant to the in Inside the housing 11 received electrolyte is to a long-term tightness
  • the O-ring made of FKM Viton ® or
  • EPDM or other elastomer resistant to the electrolyte may be formed.
  • FIG. 4 shows an alternative embodiment in which a
  • Projection 29 of the cover plate 23 is provided with a sealing arrangement 32 with a sprayed-on sealing lip 43.
  • the sealing lip 43 is molded on the projection 29 forming downwardly bent edge 27 of the cover plate 23 so that it protrudes laterally outwardly beyond the cover plate 23.
  • a sealing arrangement 32 is provided with a sealing bead 33 in the form of, for example, an O-ring 41 or a sealing lip 43.
  • electrolyte-resistant adhesive is required, a wider range of possible adhesives may be available.
  • FIG. 5 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)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

L'invention concerne une cellule de batterie, en particulier une cellule de batterie à lithium-ion, dans laquelle un élément de bobine, deux consommateurs et un électrolyte sont logés dans un boîtier (11). Le boîtier est formé d'un récipient (13) et d'un ensemble couvercle, l'ensemble couvercle comprenant entre autres une plaque de recouvrement (23) qui est fixé à demeure au récipient (13) après l'introduction des composants internes de la cellule de batterie. La plaque de recouvrement (23) est par exemple collée le long d'une saillie (29) à l'aide d'une couche adhésive (31) au niveau de la surface interne (37) du récipient (13). Un bourrelet d'étanchéité (33) par exemple formé par un joint torique (41) d'un dispositif d'étanchéité (32) empêche que l'électrolyte introduit dans le boîtier (11) entre en contact avec l'adhésif (31) et l'attaque chimique.
PCT/EP2013/066849 2012-10-05 2013-08-13 Cellule de batterie dotée d'une plaque de recouvrement fixée par collage dans le boîtier WO2014053267A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201380052079.6A CN104685661B (zh) 2012-10-05 2013-08-13 具有在壳体中通过粘入来固定的盖板的电池单元

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012218188.1A DE102012218188B4 (de) 2012-10-05 2012-10-05 Batteriezelle mit in Gehäuse durch Einkleben fixierter Deckplatte
DE102012218188.1 2012-10-05

Publications (1)

Publication Number Publication Date
WO2014053267A1 true WO2014053267A1 (fr) 2014-04-10

Family

ID=48979751

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/066849 WO2014053267A1 (fr) 2012-10-05 2013-08-13 Cellule de batterie dotée d'une plaque de recouvrement fixée par collage dans le boîtier

Country Status (3)

Country Link
CN (1) CN104685661B (fr)
DE (1) DE102012218188B4 (fr)
WO (1) WO2014053267A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014219001A1 (de) * 2014-09-22 2016-03-24 Robert Bosch Gmbh Batteriezelle mit Zellengehäuse und einer Deckelanordnung mit Batteriekontakten
DE102015218530A1 (de) * 2015-09-25 2017-03-30 Elringklinger Ag Gehäuse für eine elektrochemische Zelle und Verfahren zur Herstellung eines Gehäuses für eine elektrochemische Zelle
DE102015224273A1 (de) * 2015-12-04 2017-06-08 Robert Bosch Gmbh Gehäuse für Batteriesysteme
TWM566153U (zh) * 2018-06-15 2018-09-01 光陽工業股份有限公司 電動機車的電池構造
DE102019210790B4 (de) 2019-07-22 2023-11-02 Volkswagen Aktiengesellschaft Batteriegehäuse für eine Fahrzeugbatterie
DE102019220034A1 (de) * 2019-12-18 2021-06-24 Volkswagen Aktiengesellschaft Dichtungsanordnung für einen Akkumulator eines Kraftfahrzeugs sowie Verfahren zur Herstellung einer solchen Dichtungsanordnung
DE102020105138A1 (de) 2020-02-27 2021-09-02 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen eines Batteriemoduls, Batteriemodul, Traktionsbatterie sowie elektrisch antreibbares Kraftfahrzeug
DE102021114121B4 (de) 2021-06-01 2023-06-22 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Batteriemodul und Verfahren zum Herstellen desselben
CN115732819B (zh) * 2021-08-27 2023-12-15 宁德时代新能源科技股份有限公司 电池单体及与其相关电池、装置、制备方法和制备装置

Citations (4)

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Publication number Priority date Publication date Assignee Title
WO2002043165A2 (fr) * 2000-11-22 2002-05-30 Eveready Battery Company, Inc. Cellule electrochimique alcaline a fermeture adhesive
JP2006040596A (ja) * 2004-07-23 2006-02-09 Hitachi Maxell Ltd 扁平形電池およびその製造方法
EP2333869A1 (fr) * 2009-12-11 2011-06-15 Samsung SDI Co., Ltd. Batterie secondaire au lithium
WO2012011470A1 (fr) * 2010-07-21 2012-01-26 株式会社 東芝 Pile et bloc-piles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100614358B1 (ko) * 2004-10-28 2006-08-21 삼성에스디아이 주식회사 캔형 이차 전지
DE102010026093A1 (de) 2010-07-05 2012-01-05 Li-Tec Battery Gmbh Galvanische Zelle
CN102024987A (zh) * 2010-11-08 2011-04-20 飞毛腿(福建)电子有限公司 一种铝壳锂离子电池的封装工艺

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002043165A2 (fr) * 2000-11-22 2002-05-30 Eveready Battery Company, Inc. Cellule electrochimique alcaline a fermeture adhesive
JP2006040596A (ja) * 2004-07-23 2006-02-09 Hitachi Maxell Ltd 扁平形電池およびその製造方法
EP2333869A1 (fr) * 2009-12-11 2011-06-15 Samsung SDI Co., Ltd. Batterie secondaire au lithium
WO2012011470A1 (fr) * 2010-07-21 2012-01-26 株式会社 東芝 Pile et bloc-piles
EP2597703A1 (fr) * 2010-07-21 2013-05-29 Kabushiki Kaisha Toshiba, Inc. Pile et bloc-piles

Also Published As

Publication number Publication date
CN104685661A (zh) 2015-06-03
CN104685661B (zh) 2018-06-15
DE102012218188A1 (de) 2014-04-10
DE102012218188B4 (de) 2021-09-02

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