Title:
ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/240749
Kind Code:
A1
Abstract:
The present application relates to the technical field of batteries. Disclosed are an electrode assembly, a battery cell, a battery and an electric device. The electrode assembly comprises: a negative electrode plate comprising a negative electrode active material layer and a negative electrode current collector, the negative electrode active material layer comprising a first main body region and a first thinned region, and the thickness of the first thinned region being less than that of the first main body region; a positive electrode plate; and a separator arranged between the negative electrode plate and the positive electrode plate, the separator comprising a first filling region arranged corresponding to the first thinned region, wherein a separator active layer is provided on the first filling region, and the separator active layer comprises a first negative electrode active layer arranged between the first filling region and the first thinned region. The technical solution of the present application can prevent lithium precipitation from occurring in electrode plates, thereby improving the safety of the battery.
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Inventors:
CHANG WEN (CN)
FU CHENGHUA (CN)
YE YONGHUANG (CN)
GUO SUOGANG (CN)
FU CHENGHUA (CN)
YE YONGHUANG (CN)
GUO SUOGANG (CN)
Application Number:
PCT/CN2022/107849
Publication Date:
December 21, 2023
Filing Date:
July 26, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/13; H01M50/46
Foreign References:
| CN216563208U | 2022-05-17 | |||
| CN216354300U | 2022-04-19 | |||
| CN216450684U | 2022-05-06 | |||
| CN214153122U | 2021-09-07 | |||
| CN114335407A | 2022-04-12 | |||
| JP2020095931A | 2020-06-18 |
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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