Title:
BATTERY CELL AND MANUFACTURING METHOD AND MANUFACTURING SYSTEM THEREFOR, BATTERY, AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/050281
Kind Code:
A1
Abstract:
Provided in the embodiments of the present application are a battery cell and a manufacturing method and manufacturing system therefor, a battery, and an electric device. The battery cell comprises: a case having an opening; an electrode component accommodated in the case and provided with a first tab at the end thereof that faces the opening; and an end cap for covering the opening, wherein the end cap comprises a first connection portion and a weak portion, the weak portion being arranged along the edge of the first connection portion, and the end cap is configured to rupture along the weak portion when the internal pressure of the battery cell reaches a threshold, so as to release the internal pressure. The battery cell further comprises a fixing structure for fixedly connecting the first connection portion to the first tab to limit the movement of the first connection portion. According to the embodiments of the present application, it is possible to reduce the risk of the end cap prematurely rupturing to release pressure when the battery cell is in normal use, which is conducive to improving the safety and stability of the battery cell.
Inventors:
FANG KUN (CN)
GUO ZHIJUN (CN)
GUO ZHIJUN (CN)
Application Number:
PCT/CN2021/122104
Publication Date:
April 06, 2023
Filing Date:
September 30, 2021
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M50/342
Foreign References:
| CN112768845A | 2021-05-07 | |||
| CN204361193U | 2015-05-27 | |||
| CN113258124A | 2021-08-13 | |||
| JPH09129208A | 1997-05-16 | |||
| CN201994356U | 2011-09-28 | |||
| CN101373823A | 2009-02-25 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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