Title:
SEPARATOR, PREPARATION METHOD THEREFOR, AND RELATED SECONDARY BATTERY THEREOF, AND BATTERY MODULE, BATTERY PACK, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/110227
Kind Code:
A1
Abstract:
A separator and a secondary battery comprising same, a device comprising the secondary battery, and a preparation method for the separator. The separator comprises a substrate (A) and a coating (B) formed on at least one surface of the substrate (A); the coating (B) comprises inorganic particles (B3) and organic particles; the organic particles comprise a first type of organic particles (B1) and a second type of organic particles (B2); the first type of organic particles (B1) and the second type of organic particles (B2) are embedded in the inorganic particles (B3) and form protrusions on the surface of the coating (B); and the number-average particle diameter of the first type of organic particles (B1) is greater than 10 μm, and the number-average particle diameter of the second type of organic particles (B2) is 2 μm-10 μm.
Inventors:
HONG HAIYI (CN)
CHENG CONG (CN)
LAN YUANYUAN (CN)
YANG JIANRUI (CN)
LIU NA (CN)
JIN HAIZU (CN)
CHENG CONG (CN)
LAN YUANYUAN (CN)
YANG JIANRUI (CN)
LIU NA (CN)
JIN HAIZU (CN)
Application Number:
PCT/CN2020/132955
Publication Date:
June 02, 2022
Filing Date:
November 30, 2020
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M50/409; H01M50/40; H01M50/431; H01M50/446
Foreign References:
| CN111954943A | 2020-11-17 | |||
| CN111492507A | 2020-08-04 | |||
| CN102630353A | 2012-08-08 | |||
| CN109037555A | 2018-12-18 | |||
| US20150240039A1 | 2015-08-27 | |||
| CN104659311A | 2015-05-27 |
Other References:
See also references of EP 4109658A4
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