The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2026
Filed:
Aug. 19, 2025
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Baiqing Li, Ningde, CN;
Shuangjuan Peng, Ningde, CN;
Lin Peng, Ningde, CN;
Cheng Ji, Ningde, CN;
Yao Li, Ningde, CN;
Ou Qian, Ningde, CN;
Haizu Jin, Ningde, CN;
Fenggang Zhao, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde, CN;
Abstract
The present application relates to a separator, a battery cell, a battery and an electrical apparatus, wherein the separator comprises two surfaces opposite to each other along its own thickness direction, at least one of the surface of the separator and the interior of the separator comprises a pore structure, and the separator further comprises a swellable polymer; the separator satisfies: when a pressure of 1.25 MPa is applied along the thickness direction of the separator, the compression rate ΔV of the separator is ≤25%.