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:
Jul. 21, 2026
Filed:
Jun. 23, 2022
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
Yanyu Liu, Ningde City, CN;
Shoujun Huang, Ningde City, CN;
Xinxiang Chen, Ningde City, CN;
Yulian Zheng, Ningde City, CN;
Peng Wang, Ningde City, CN;
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong, CN;
Abstract
The application relates to an end cover assembly, a battery cell, a battery, and a device and method for manufacturing a battery cell. The end cover assembly is used for a battery cell, and includes a cover plate, the cover plate is provided with a pressure relief hole penetrating through the cover plate in a thickness direction, a breathable film, arranged opposite to the pressure relief hole and configured to exhaust gas inside the battery cell, a projection of the breathable film in the thickness direction does not overlap with a projection of the cover plate in the thickness direction; and a fixing member, configured to connect the cover plate to fix the breathable film. The application intends to solve the problem of a large space occupied by the breathable film.