WO2021258924A1 - Élément de batterie à poche de type bouton et batterie de type bouton - Google Patents

Élément de batterie à poche de type bouton et batterie de type bouton Download PDF

Info

Publication number
WO2021258924A1
WO2021258924A1 PCT/CN2021/094430 CN2021094430W WO2021258924A1 WO 2021258924 A1 WO2021258924 A1 WO 2021258924A1 CN 2021094430 W CN2021094430 W CN 2021094430W WO 2021258924 A1 WO2021258924 A1 WO 2021258924A1
Authority
WO
WIPO (PCT)
Prior art keywords
button
battery cell
flange
battery
cell body
Prior art date
Application number
PCT/CN2021/094430
Other languages
English (en)
Chinese (zh)
Inventor
李升高
胡大林
郭玉杰
廖兴群
Original Assignee
曙鹏科技（深圳）有限公司
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 曙鹏科技（深圳）有限公司 filed Critical 曙鹏科技（深圳）有限公司
Publication of WO2021258924A1 publication Critical patent/WO2021258924A1/fr

Links

Images

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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
    • 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
    • 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
    • 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

  • This application belongs to the technical field of soft-pack batteries, and particularly relates to a button-type soft-pack battery and a button battery.
  • Lithium-ion battery is a kind of secondary battery (rechargeable battery), which mainly relies on the movement of lithium ions between the positive and negative electrodes to work, and the soft-packed battery is an important part of the lithium-ion battery and the storage part of the lithium-ion battery , The quality of the soft pack battery determines the quality of the lithium-ion battery.
  • a button battery refers to a battery with a shape and size like a small button. Generally speaking, it has a larger diameter and a thinner thickness; a button battery includes a button-type soft-pack battery cell, which includes a pole piece, a diaphragm, and an aluminum-plastic film The diaphragm is used to separate the pole pieces with different polarities, and the aluminum-plastic film is used to encapsulate the pole pieces and the diaphragm in the up and down direction.
  • the edge is folded, but the aluminum on the edge of the flange is exposed and may be used as a conductor As a result, electronic components may be contacted and short-circuited by mistake during subsequent assembly, and it may also contact with its own negative electrode to form a galvanic cell, which may cause electrochemical corrosion.
  • the existing button-type soft-pack batteries usually use double-sided tape to be glued on the folded edge to avoid the exposed aluminum material of the folded edge.
  • the inventor realized that the double-sided tape can easily fall off from the folded edge, making the folded edge The aluminum on the end face is easily exposed.
  • the technical problem to be solved by this application is to provide a button-type soft-packed battery cell and a button battery in view of the problem that the existing folded end aluminum material is easy to be exposed.
  • a button-type soft-packed battery cell which includes a battery core body and an insulating sleeve.
  • the edge is bent along the axial direction of the battery core body, and the insulating sleeve is sleeved on the side surface of the battery core body and wraps the folded edge.
  • the insulating sleeve is an elastic sleeve.
  • the elastic sleeve is a PET sleeve, a rubber sleeve or a silicone sleeve.
  • the wall thickness of the elastic sleeve is 0.03-0.5 mm.
  • the inner diameter of the elastic sleeve is always the same along the axial direction of the battery core body.
  • the insulating sleeve completely covers the side surface of the battery core body.
  • the two ends of the insulating sleeve along the axial direction of the battery core body do not protrude from the axial end surface of the battery core body.
  • the diameter of the two ends of the insulating sleeve along the axial direction of the battery core body is smaller than the diameter of the middle cross section of the insulating sleeve.
  • the present application also provides a button battery, including the button-type soft-packed battery cell mentioned in any of the above technical solutions.
  • button battery of the present application it further includes a hard shell, and the button-type soft-packed battery cell is arranged in the hard shell.
  • the button-type soft-packed battery cell and the button battery provided in the present application have the beneficial effect that the insulating sleeve is sleeved on the side of the battery core body and wrapped around the folded edge, so that the insulating sleeve and the battery core body can be relatively fixed, so that the insulating sleeve is always wrapped Folding prevents the aluminum from being exposed on the end face of the flanging, thereby avoiding the flanging as a conductor and causing the flanging to be in contact with electronic components and short-circuiting during subsequent assembly, and preventing the flanging from contacting with its own negative electrode to form a primary battery and causing electrochemical corrosion ;
  • the insulating sleeve can also restrain the folding edge, avoiding the folding edge that is bent along the axial direction of the battery body from moving slowly toward the middle position of the battery body under the action of the extrusion stress, causing the folding edge to rebound, resulting in a button-type soft pack battery
  • FIG. 1 is a schematic structural diagram of a button-type soft-pack battery provided by an embodiment of the application
  • Figure 2 is a schematic diagram of part of the structure in Figure 1;
  • Fig. 3 is a schematic diagram of the structure of the insulating sleeve in Fig. 1.
  • the button-type soft-packed battery cell provided by the embodiments of the present application includes a battery core body 11 and an insulating sleeve 13. 12 is bent along the axial direction of the battery core body 11, and the insulating sleeve 13 is sleeved on the side surface of the battery core body 11 and wraps the flange 12.
  • the button-type soft-covered battery cell 1 provided by the present application has an insulating sleeve 13 sleeved on the side of the battery core body 11 and wraps the folds 12, so that the insulating sleeve 13 and the battery core body 11 can be relatively fixed. , So that the insulating sleeve 13 always wraps the folded edge 12, avoids the end surface aluminum of the folded edge 12 from being exposed, thus avoiding the folded edge 12 as a conductor, which may cause false contact with electronic components and short-circuit during subsequent assembly, and avoid the folded edge 12 from being short-circuited.
  • Electrochemical corrosion occurs when the negative electrode of itself is in contact with the galvanic cell; the insulating sleeve 13 can also restrain the folding edge 12 to prevent the folding edge 12 bent along the axial direction of the cell body 11 from facing the cell body 11 under the action of extrusion stress.
  • the slow movement of the intermediate position causes the folding edge 12 to rebound, resulting in an increase in the volume of the button-type soft-packed battery cell 1; After folding, the gap between the folded edge 12 and the side surface of the cell body 11 can be retained, a certain space is reserved for the cyclic expansion of the cell body 11, and the safety performance of the button-type soft-packed cell 1 is improved.
  • the insulating sleeve 13 is an elastic sleeve, which is convenient for covering the insulating sleeve 13 on the cell body 11, and at the same time, it is convenient to tie the folded edge 12 to prevent the folded edge 12 from rebounding and cause the volume of the button-type soft-packed cell 1 Increase.
  • the elastic sleeve is a PET sleeve, a rubber sleeve or a silicone sleeve, which is convenient for the user to select the insulating sleeve 13 of different materials according to the manufacturing cost, volume, energy density, safety performance and other requirements of the button-type soft-pack battery cell 1.
  • the wall thickness of the elastic sleeve is 0.03-0.5mm to ensure the strength of the elastic sleeve, avoid the elastic sleeve wall thickness is too thin and break, and at the same time avoid the elastic sleeve wall thickness is too thick to increase the button type
  • the volume of the soft-packed battery cell 1 and the thick wall thickness of the elastic sleeve will increase the difficulty of putting the insulating sleeve 13 on the battery core body 11.
  • the inner diameter of the elastic sleeve is always the same along the axial direction of the battery core body 11.
  • the elastic sleeve is used to make the elastic sleeve fit in a variety of different shapes.
  • the side surface of the core body 11 improves the versatility of the elastic sleeve.
  • the insulating sleeve 13 fully covers the side surface of the cell body 11, preventing foreign objects from contacting the side surface of the cell body 11 and piercing the cell body 11, resulting in damage to the cell body 11. At the same time, it can also insulate the side surface of the cell body 11 to avoid electrochemical corrosion when the side surface of the cell body 11 is scratched in contact with other structures.
  • the two ends of the insulating sleeve 13 along the axial direction of the cell body 11 do not protrude from the axial end surface of the cell body 11 to prevent the two ends of the insulating sleeve 13 from protruding.
  • the axial end surface of the core body 11 causes the portion of the insulating sleeve 13 protruding from the axial end surface of the cell body 11 to occupy space, which affects the energy density of the button-type soft-packed cell 1.
  • the diameter of the two ends of the insulating sleeve 13 along the axial direction of the cell body 11 is smaller than the diameter of the middle cross section of the insulating sleeve 13 (not shown), so that the diameter of the insulating sleeve 13 follows the diameter of the cell body 11 With the change of the diameter, the entire insulating sleeve 13 and the cell body 11 fit more compactly.
  • the present application also provides a button battery, which includes the button-type soft-packed battery cell 1 described in any of the above embodiments.
  • the folded edge 12 is insulated by the insulating sleeve 13 provided on the side of the cell body 11, so that the aluminum material on the end face of the folded edge 12 is prevented from being exposed.
  • the components are contacted and short-circuited by mistake, and the insulating sleeve 13 can also bind the fold 12 to reduce the volume of the button-type soft-packed cell 1 and increase the energy density of the button-type soft-packed cell 1.
  • the button battery further includes a hard shell, and the button-type soft-pack battery cell 1 is arranged in the hard shell to protect the cell body 11 through the hard shell to prevent external force from being applied to the cell body 11 , Resulting in damage to the cell body 11.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention appartient au domaine technique des batteries à poche et, en particulier, un élément de batterie à poche de type bouton et une batterie de type bouton. L'élément de batterie à poche de type bouton comprend un corps d'élément de batterie et un manchon d'isolation, une face latérale du corps d'élément de batterie comportant une bride entourant la circonférence du corps d'élément de batterie ; la bride est pliée dans la direction axiale du corps d'élément de batterie ; et le manchon d'isolation est gainé sur la face latérale du corps d'élément de batterie et enveloppe la bride. Au moyen du manchon d'isolation étant gainé sur la face latérale du corps d'élément de batterie et enveloppant la bride, le manchon d'isolation enveloppe toujours la bride de façon à empêcher le matériau d'aluminium d'une face d'extrémité de la bride d'être exposé et ainsi empêcher un court-circuitage pour la raison que la bride, servant de conducteur, vient en contact avec un composant électronique par erreur pendant l'assemblage ultérieur, de manière à éviter la corrosion électrochimique provoquée par la formation d'une cellule galvanique lorsque la bride est en contact avec sa propre électrode négative. De plus, le manchon isolant peut également retenir la bride, de manière à empêcher l'augmentation du volume de l'élément de batterie à poche de type bouton en raison du rebond de la bride provoqué par le mouvement lent de la bride, qui est courbé dans la direction axiale du corps d'élément de batterie, vers la position centrale du corps d'élément de batterie sous l'action d'une contrainte de pression.
PCT/CN2021/094430 2020-06-23 2021-05-18 Élément de batterie à poche de type bouton et batterie de type bouton WO2021258924A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021208880.9 2020-06-23
CN202021208880.9U CN213184390U (zh) 2020-06-23 2020-06-23 扣式软包电芯及纽扣电池

Publications (1)

Publication Number Publication Date
WO2021258924A1 true WO2021258924A1 (fr) 2021-12-30

Family

ID=75789571

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/094430 WO2021258924A1 (fr) 2020-06-23 2021-05-18 Élément de batterie à poche de type bouton et batterie de type bouton

Country Status (2)

Country Link
CN (1) CN213184390U (fr)
WO (1) WO2021258924A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115764003A (zh) * 2022-10-11 2023-03-07 贵州梅岭电源有限公司 微重力环境下多周次使用锌银蓄电池

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN213184390U (zh) * 2020-06-23 2021-05-11 曙鹏科技（深圳）有限公司 扣式软包电芯及纽扣电池

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010061998A (ja) * 2008-09-04 2010-03-18 Murata Mfg Co Ltd 電池と組電池
CN202917574U (zh) * 2012-11-15 2013-05-01 佛山市顺德区顺达电脑厂有限公司 纽扣电池防短路保护结构
CN204809335U (zh) * 2015-06-25 2015-11-25 中信国安盟固利动力科技有限公司 一种软包装动力锂离子电池折边结构
CN109962284A (zh) * 2017-12-22 2019-07-02 宁德新能源科技有限公司 电化学装置及电化学装置的制造方法
CN111193056A (zh) * 2019-11-29 2020-05-22 惠州市金合电子有限公司 一种碟式电池及其制备方法
CN210723171U (zh) * 2019-11-27 2020-06-09 新余赣锋电子有限公司 一种含软包电芯的电池
CN211907535U (zh) * 2020-05-22 2020-11-10 深圳聚锂能源有限公司 一种带保护套环的软包扣式锂电池组件
CN213124684U (zh) * 2020-09-16 2021-05-04 曙鹏科技（深圳）有限公司 软包纽扣电池
CN213184390U (zh) * 2020-06-23 2021-05-11 曙鹏科技（深圳）有限公司 扣式软包电芯及纽扣电池

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010061998A (ja) * 2008-09-04 2010-03-18 Murata Mfg Co Ltd 電池と組電池
CN202917574U (zh) * 2012-11-15 2013-05-01 佛山市顺德区顺达电脑厂有限公司 纽扣电池防短路保护结构
CN204809335U (zh) * 2015-06-25 2015-11-25 中信国安盟固利动力科技有限公司 一种软包装动力锂离子电池折边结构
CN109962284A (zh) * 2017-12-22 2019-07-02 宁德新能源科技有限公司 电化学装置及电化学装置的制造方法
CN210723171U (zh) * 2019-11-27 2020-06-09 新余赣锋电子有限公司 一种含软包电芯的电池
CN111193056A (zh) * 2019-11-29 2020-05-22 惠州市金合电子有限公司 一种碟式电池及其制备方法
CN211907535U (zh) * 2020-05-22 2020-11-10 深圳聚锂能源有限公司 一种带保护套环的软包扣式锂电池组件
CN213184390U (zh) * 2020-06-23 2021-05-11 曙鹏科技（深圳）有限公司 扣式软包电芯及纽扣电池
CN213124684U (zh) * 2020-09-16 2021-05-04 曙鹏科技（深圳）有限公司 软包纽扣电池

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115764003A (zh) * 2022-10-11 2023-03-07 贵州梅岭电源有限公司 微重力环境下多周次使用锌银蓄电池
CN115764003B (zh) * 2022-10-11 2023-07-21 贵州梅岭电源有限公司 微重力环境下多周次使用锌银蓄电池

Also Published As

Publication number Publication date
CN213184390U (zh) 2021-05-11

Similar Documents

Publication Publication Date Title
WO2021258924A1 (fr) Élément de batterie à poche de type bouton et batterie de type bouton
CN106463761B (zh) 卷绕型电池
JP7205050B2 (ja) 密閉型蓄電装置
KR100515830B1 (ko) 전극조립체와 이를 이용한 이차전지
KR20040058918A (ko) 전지부와, 이의 감는 방법과, 이를 채용하여 제조된 리튬이차 전지
WO2007071122A1 (fr) Batterie aux ions de lithium a enroulement avec un bac de boitier souple et son procede de fabrication
CN214411282U (zh) 一种卷绕电芯以及电池
WO2018157624A1 (fr) Noyau de batterie
CN212571274U (zh) 锂离子电池及电子设备
JP3970837B2 (ja) 電極組立体及びこれを利用した二次電池
US20220093957A1 (en) Cell, battery assembly and electronic device
KR20070101444A (ko) 전극 조립체 및 이를 구비한 이차전지
WO2024088367A1 (fr) Ensemble électrode, élément, module de batterie et procédé de préparation d'ensemble électrode
CN212380471U (zh) 硬壳纽扣电池
CN210956891U (zh) 一种锂离子椭圆型结构电池
CN208478491U (zh) 一种电芯以及电池
JP6670086B2 (ja) 密閉型電池
CN202662681U (zh) 一种圆柱型锂离子电池
JP2017139085A (ja) 密閉型電池
CN217903249U (zh) 一种电池
KR20040107999A (ko) 이차 전지
KR20130052410A (ko) 이차전지용 전극 조립체 및 이를 구비한 이차전지
CN106229428B (zh) 电池负极连接结构及卷绕式圆柱形电池
JP5630859B2 (ja) 円筒型蓄電池
WO2019047107A1 (fr) Batterie lithium métal

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21829764

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 10/05/2023)

122 Ep: pct application non-entry in european phase

Ref document number: 21829764

Country of ref document: EP

Kind code of ref document: A1