WO2007019754A1 - Ensemble de plaque de protection pour batterie ionique au lithium, et batterie utilisant ledit ensemble - Google Patents

Ensemble de plaque de protection pour batterie ionique au lithium, et batterie utilisant ledit ensemble Download PDF

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Publication number
WO2007019754A1
WO2007019754A1 PCT/CN2006/000931 CN2006000931W WO2007019754A1 WO 2007019754 A1 WO2007019754 A1 WO 2007019754A1 CN 2006000931 W CN2006000931 W CN 2006000931W WO 2007019754 A1 WO2007019754 A1 WO 2007019754A1
Authority
WO
WIPO (PCT)
Prior art keywords
lithium ion
ion battery
boss
cover plate
tab
Prior art date
Application number
PCT/CN2006/000931
Other languages
English (en)
Chinese (zh)
Inventor
Ji Ping Zhou
Original Assignee
Shenzhen Bak Battery Co., Ltd
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 Shenzhen Bak Battery Co., Ltd filed Critical Shenzhen Bak Battery Co., Ltd
Publication of WO2007019754A1 publication Critical patent/WO2007019754A1/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
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • 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
    • 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
    • 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 lithium ion battery technology, and in particular to a lithium ion battery cover assembly and a battery using the cover assembly.
  • Lithium-ion batteries are widely used in notebook computers, video cameras, digital cameras, PDAs (personal digital assistants), and other mobile communication terminal products. It has many specifications, wide application and large demand. Taking a cylindrical lithium ion battery as an example, a battery having a liquid injection hole in the center of the cover assembly has appeared, but the connection between the various parts of the cover assembly is complicated, resulting in a complicated structure, and the cover is too thick and has poor sealing performance. .
  • An object of the present invention is to provide a lithium ion battery cover assembly having a simple structure and a good sealing performance and a battery using the same.
  • a lithium ion battery cover assembly comprising a pole, an insulating sheet, a cover plate and a lower insulating sheet which are sequentially matched, and the liquid injection is provided on the pole a hole, the cover plate and the upper and lower insulating sheets are provided with corresponding through holes, and a pole extending outwardly through the liquid injection hole is disposed on the pole at the outlet of the lower end of the liquid injection hole, the convex
  • the stage passes through the upper insulating sheet, the cover plate and the lower insulating sheet in turn, and the ends of the bosses are folded outward and the above components are fixedly connected together.
  • the end of the boss is provided with an axial notch to facilitate outward folding.
  • the inner wall of the liquid injection hole in the boss has an annular inner mesa such that a thinner side wall is formed at an end portion extending outward from the inner mesa.
  • the wall thickness of the boss decreases from the root to the end of the pole.
  • the axial cross section of the liquid injection hole in the boss is flared.
  • the position of the cover plate on which the insulating sheet is fitted is a counterbore shape.
  • the cover plate assembly may further include a tab extending handle, and a through hole is disposed thereon, and the boss passes through the lower insulating sheet and further penetrates the through hole on the tab extending handle. Further, the cover plate assembly may further include an annular spacer disposed between the lower insulating sheet and the tab extension handle or below the tab extension handle, and the boss also penetrates the annular spacer.
  • a lithium ion battery comprising a battery case and a battery core and an electrolyte contained therein, the battery case being packaged using the above-described lithium ion battery cover plate assembly.
  • the beneficial technical effects of the present invention are as follows: 1) using the boss extending from the pole injection hole to connect the entire cover assembly, and riveting the cover assembly into one body, not only The structure is simple and effective to reduce the thickness of the cover plate, and the connection is tight and reliable. 2)
  • the pole extension handle is also riveted into the cover assembly, which can improve the connection between the ear and the cover when the battery is assembled, which makes the operation more convenient.
  • 3) Increasing the ring gasket can improve the riveting effect, and effectively prevent the insulating sheet or the end of the tab from being stabbed by the riveting flange of the boss. 4)
  • the boss whose wall thickness is reduced from the root is reduced, and the end portion is folded more easily. 5)
  • the counter-hole-shaped assembly position on the cover plate can facilitate the assembly of the flange and the pole, improve the sealing performance and reduce the thickness of the cover assembly.
  • Figure 1 is a top plan view of a lithium ion battery cover assembly
  • Figure 2 is a cross-sectional view along line A-A of the lithium ion battery cover assembly of Figure 1;
  • Figure 3 is a bottom view of the lithium ion battery cover assembly of Figure 1;
  • Figure 4 is a cross-sectional view of the pole of Figure 1 along the center hole;
  • FIG. 5 is a schematic structural view of a lithium ion battery using the battery cover assembly of FIG. 1 to FIG. 4;
  • FIG. 6 is a top view of another lithium ion battery cover assembly;
  • Figure 7 is a cross-sectional view taken along line B-B of the lithium ion battery cover assembly of Figure 6.
  • Embodiment 1 A lithium ion battery cover assembly, as shown in FIG. 1 to FIG. 4, includes a pole 3, an upper insulating sheet 1, a rectangular cover 4, a lower insulating sheet 5, a metal material ring gasket 6 and The tab extends the handle 9. The above components are arranged in series.
  • the pole 3 is provided with a liquid injection hole 2, and the upper insulating sheet 1, the rectangular cover 4, the lower insulating sheet 5, the annular spacer 6 and the tab extension handle 9 are provided with corresponding through holes; 2, the pole on the lower end outlet is provided with an outwardly extending boss 7 extending through the liquid injection hole, and the inner wall of the liquid injection hole 2 in the boss 7 has
  • the annular inner mesa 10 is such that the end portion 8 extending outward from the inner mesa 10 forms a thinner side wall for facilitating riveting.
  • the boss 7 sequentially passes through the upper insulating sheet 1, the rectangular cover 4, and the lower insulating sheet 5.
  • the annular spacer 6 and the tab extension handle 9 have their ends 8 folded outwardly to join the above components together.
  • the position of the rectangular cover plate 4 with the insulating sheet 1 is in the shape of a countersunk hole, which facilitates the assembly of the upper insulating sheet 1 and the pole 3, effectively improving the sealing performance and reducing the thickness of the cover assembly.
  • the stepped inner wall of the boss is used to reduce the thickness of the end portion, and other thick and thin shapes, such as a trumpet shape, may be used.
  • other thick and thin shapes such as a trumpet shape
  • it may also be used.
  • the annular gasket can be placed on the tip extension handle or below it, even at the same time, mainly to avoid damage to the tab extension handle and the lower insulation gasket by riveting and to prevent short circuit.
  • Embodiment 2 A lithium ion battery, as shown in Fig. 5, includes an aluminum rectangular parallelepiped battery case 11, a battery core, an electrolyte (not shown), and a cover plate assembly.
  • the battery cell and the electrolyte are housed in the battery case 11, and the battery cell is wound by the positive electrode tab 12, the diaphragm 13, and the negative electrode tab 14, and the cap assembly has the structure described in the first embodiment.
  • the tab 10 drawn from the core is welded to the tab extension handle 9 in the cover assembly, the rectangular cover 4 in the cover assembly is welded to the upper end of the housing 11, and the sealing plug 15 blocks the injection opening 2.
  • Embodiment 3 Another lithium ion battery cover assembly, as shown in FIG. 6 and FIG. 7, wherein the cover 4 is a circular cover, which is suitable for a cylindrical battery, and other structures are the same as those in the first embodiment.
  • the cover is attached to the housing by welding, and of course, the housing roller is conventionally pressed out of the step, and the flange sealing can also be realized.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Filling, Topping-Up Batteries (AREA)

Abstract

L’invention concerne un ensemble de plaque de protection pour batterie ionique au lithium, et une batterie ionique au lithium utilisant ledit ensemble. L’ensemble de plaque de protection comprend une borne, une pièce d’isolation supérieure, une plaque de protection et une pièce d’isolation inférieure, toutes assemblées les unes aux autres successivement. Un trou d’injection est pratiqué dans la borne. Un trou traversant est pratiqué de manière correspondante dans le couvercle, la pièce d’isolation supérieure et la pièce d’isolation inférieure. Une plate-forme convexe est disposée dans la borne de sortie de l’extrémité inférieure du trou d’injection, la plate-forme convexe s’étend vers l’extérieur et continue à travers le trou d’injection. La plate-forme convexe traverse la pièce d’isolation supérieure, la plaque de protection et la pièce d’isolation inférieure. L’extrémité de la plate-forme convexe se retourne vers l’extérieur et fixe les ensembles ci-dessus de manière à les connecter les uns aux autres. La plate-forme convexe s’étendant dans le trou d’injection de la borne sert à connecter l’ensemble de plaque de protection. L’ensemble de plaque de protection est fixé intégralement à l’aide d’un joint à rivet. Ainsi, la plaque de protection est de structure simple et son épaisseur est réduite de manière effective de manière à garantir la solidité et la fiabilité de la connexion.
PCT/CN2006/000931 2005-08-19 2006-05-09 Ensemble de plaque de protection pour batterie ionique au lithium, et batterie utilisant ledit ensemble WO2007019754A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200520035264.7 2005-08-19
CNU2005200352647U CN2833898Y (zh) 2005-08-19 2005-08-19 锂离子电池盖板组件及电池

Publications (1)

Publication Number Publication Date
WO2007019754A1 true WO2007019754A1 (fr) 2007-02-22

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PCT/CN2006/000931 WO2007019754A1 (fr) 2005-08-19 2006-05-09 Ensemble de plaque de protection pour batterie ionique au lithium, et batterie utilisant ledit ensemble

Country Status (2)

Country Link
CN (1) CN2833898Y (fr)
WO (1) WO2007019754A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8389154B2 (en) 2005-09-02 2013-03-05 A123 Systems, Inc. Battery cell design and method of its construction
CN101399323B (zh) * 2007-09-27 2013-06-12 深圳市比克电池有限公司 电池盖板组件
CN107808949A (zh) * 2017-10-19 2018-03-16 江西恒动新能源有限公司 一种动力锂离子电池盖板单极柱引出负极端板方形结构
CN107833989A (zh) * 2017-10-19 2018-03-23 江西恒动新能源有限公司 一种动力锂离子电池盖板正极端板凸台一体式结构
CN112490544A (zh) * 2020-12-03 2021-03-12 惠州市恒泰科技股份有限公司 电池、第一壳体组件及其制备工艺
CN114156527A (zh) * 2021-12-03 2022-03-08 合肥国轩高科动力能源有限公司 一种锂电池结构及其装配方法
EP4156387A4 (fr) * 2020-12-21 2024-07-31 Zhuhai Cosmx Battery Co Ltd Batterie

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101752611B (zh) * 2008-12-04 2012-11-28 深圳市比克电池有限公司 锂电池
CN101826602B (zh) * 2009-03-06 2013-12-18 深圳市比克电池有限公司 一种蓄电池端盖、壳体及蓄电池
CN102208575A (zh) * 2011-04-22 2011-10-05 宁波世捷新能源科技有限公司 一种新型锂离子电池盖板
CN103378321B (zh) * 2012-04-20 2016-02-03 比亚迪股份有限公司 一种盖板组件及含有该盖板组件的电池
JP5753317B2 (ja) 2011-06-28 2015-07-22 シェンゼェン ビーワイディー オート アールアンドディー カンパニーリミテッド カバーアセンブリおよびそれを備えるバッテリ
CN107634156A (zh) * 2017-09-07 2018-01-26 深圳市长盈精密技术股份有限公司 动力电池盖板及其动力电池
CN113013524B (zh) * 2021-02-23 2023-06-20 珠海冠宇电池股份有限公司 电池外壳及电池
WO2021244272A1 (fr) * 2020-06-03 2021-12-09 珠海冠宇电池股份有限公司 Pile de type bouton et dispositif électronique
CN112531242A (zh) * 2020-12-04 2021-03-19 珠海冠宇电池股份有限公司 扣式电池及电子设备
US11862806B2 (en) 2020-06-03 2024-01-02 Zhuhai Cosmx Battery Co., Ltd. Button cell and electronic device
CN111613739B (zh) * 2020-06-03 2024-05-24 珠海冠宇电池股份有限公司 扣式电池及其制造方法、电子设备
WO2023283762A1 (fr) * 2021-07-12 2023-01-19 Hefei Gotion High-Tech Power Energy Co., Ltd. Élément de batterie cylindrique, batterie et procédé de formation d'élément de batterie cylindrique
CN117276821B (zh) * 2023-10-24 2024-09-27 安徽力翔电池科技有限公司 一种极柱带注液孔的电池顶盖及其成型方法

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JP2001057185A (ja) * 1999-01-28 2001-02-27 Ngk Insulators Ltd リチウム二次電池
CN2511007Y (zh) * 2001-12-10 2002-09-11 张兆谟 一种圆柱型锂离子电芯
CN2569352Y (zh) * 2001-07-04 2003-08-27 深圳市比亚迪锂电池有限公司 圆柱型锂离子电池
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JP2004259584A (ja) * 2003-02-26 2004-09-16 Hitachi Ltd 密閉型電池とその製造法及び密閉型電池用蓋板

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Publication number Priority date Publication date Assignee Title
JP2001057185A (ja) * 1999-01-28 2001-02-27 Ngk Insulators Ltd リチウム二次電池
CN2569352Y (zh) * 2001-07-04 2003-08-27 深圳市比亚迪锂电池有限公司 圆柱型锂离子电池
CN2511007Y (zh) * 2001-12-10 2002-09-11 张兆谟 一种圆柱型锂离子电芯
CN2578995Y (zh) * 2002-09-19 2003-10-08 深圳华粤宝电池有限公司 一种圆柱形锂离子电池
JP2004259584A (ja) * 2003-02-26 2004-09-16 Hitachi Ltd 密閉型電池とその製造法及び密閉型電池用蓋板

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8389154B2 (en) 2005-09-02 2013-03-05 A123 Systems, Inc. Battery cell design and method of its construction
CN101399323B (zh) * 2007-09-27 2013-06-12 深圳市比克电池有限公司 电池盖板组件
CN107808949A (zh) * 2017-10-19 2018-03-16 江西恒动新能源有限公司 一种动力锂离子电池盖板单极柱引出负极端板方形结构
CN107833989A (zh) * 2017-10-19 2018-03-23 江西恒动新能源有限公司 一种动力锂离子电池盖板正极端板凸台一体式结构
CN112490544A (zh) * 2020-12-03 2021-03-12 惠州市恒泰科技股份有限公司 电池、第一壳体组件及其制备工艺
EP4156387A4 (fr) * 2020-12-21 2024-07-31 Zhuhai Cosmx Battery Co Ltd Batterie
CN114156527A (zh) * 2021-12-03 2022-03-08 合肥国轩高科动力能源有限公司 一种锂电池结构及其装配方法
CN114156527B (zh) * 2021-12-03 2024-01-26 合肥国轩高科动力能源有限公司 一种锂电池结构及其装配方法

Also Published As

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