Title:
ISOLATING MEMBRANE, PREPARATION METHOD THEREFOR AND RELATED SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/110228
Kind Code:
A1
Abstract:
An isolating membrane, a preparation method therefor and a related secondary battery, battery module, battery pack and device including the isolating membrane. The isolating membrane comprises a substrate (A) and a coating layer (B) provided on at least one surface of the substrate (A), wherein the coating layer (B) comprises inorganic particles (B3) and organic particles, the organic particles include first organic particles (B1) and second organic particles (B2), and the first organic particles (B1) and second organic particles (B2) are embedded into the inorganic particles (B3) and form bulges on the surface of the coating layer (B); and the first organic particles (B1) are secondary particles, the number of the first organic particles (B1) in the coating layer (B) is denoted as A, the second organic particles (B2) are primary particles, the number of the second organic particles (B2) in the coating layer (B) is denoted as B, and the isolating membrane satisfies: 0.05≤A/B＜1.
Inventors:
HONG HAIYI (CN)
YANG JIANRUI (CN)
LAN YUANYUAN (CN)
CHENG CONG (CN)
LIU NA (CN)
JIN HAIZU (CN)
YANG JIANRUI (CN)
LAN YUANYUAN (CN)
CHENG CONG (CN)
LIU NA (CN)
JIN HAIZU (CN)
Application Number:
PCT/CN2020/132956
Publication Date:
June 02, 2022
Filing Date:
November 30, 2020
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M50/40
Foreign References:
| CN111954943A | 2020-11-17 | |||
| CN110660951A | 2020-01-07 | |||
| CN105958000A | 2016-09-21 | |||
| CN111653717A | 2020-09-11 |
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