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:
Oct. 06, 2026
Filed:
Jun. 15, 2023
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong, CN;
Abstract
An end cap includes a first recess recessed from a side facing toward an electrode assembly of a battery cell and away from the electrode assembly, and a second recess recessed from a side facing away from the electrode assembly and toward the electrode assembly. A bottom wall of the second recess includes a first part and a second part surrounding the first part. The first part and a bottom wall of the first recess are opposite to each other in a thickness direction of the end cap. The end cap further includes a pressure relief portion formed between the first part and the bottom wall of the first recess, and configured to be actuated when an internal pressure of the battery cell reaches a threshold. A side of the second part facing away from the electrode assembly forms an avoidance space to avoid the pressure relief portion.