Title:
END COVER ASSEMBLY FOR BATTERY CELL, BATTERY CELL, BATTERY AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/016308
Kind Code:
A1
Abstract:
Provided in the embodiments of the present application are an end cover assembly for a battery cell, a battery cell, a battery, and an electric device. The end cover assembly comprises: an end cover, a multifunctional hole being formed in the end cover, and the multifunctional hole being used for injection of an electrolyte and arrangement of a pressure relief mechanism; and an insulating member which is arranged on the inner side of the end cover facing the battery cell and comprises a hollowed-out area and a non-hollowed-out area, the hollowed-out area being arranged opposite to the multifunctional hole, and the hollowed-out area being located on the periphery of the non-hollowed-out area. The technical solutions of the embodiments of the present application may avoid the problem of lithium plating at an electrode assembly caused by injecting an electrolyte when directly facing the electrode assembly during the battery preparation process, thus improving the cycle performance of a battery; in addition, the end cover assembly has a simple structure, which may reduce mechanical manufacturing difficulty and improve electrolyte injection efficiency.
Inventors:
ZHOU JIAN (CN)
CHENG QI (CN)
ZHOU WENLIN (CN)
LI QUANKUN (CN)
CHENG QI (CN)
ZHOU WENLIN (CN)
LI QUANKUN (CN)
Application Number:
PCT/CN2022/107305
Publication Date:
January 25, 2024
Filing Date:
July 22, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M50/655; H01M50/30
Foreign References:
| CN208478390U | 2019-02-05 | |||
| CN207938663U | 2018-10-02 | |||
| CN207800664U | 2018-08-31 | |||
| CN214153028U | 2021-09-07 | |||
| CN215418522U | 2022-01-04 | |||
| CN214505620U | 2021-10-26 | |||
| JP2014075279A | 2014-04-24 |
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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