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:
Jun. 17, 2025
Filed:
Aug. 10, 2023
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
Xingyan You, Ningde, CN;
Wanqiu Meng, Ningde, CN;
Baozhen Wu, Ningde, CN;
Yiyang Wu, Ningde, CN;
Yuwen Wang, Ningde, CN;
Chan Liao, Ningde, CN;
Yonghuang Ye, Ningde, CN;
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
Abstract
A battery cell, a battery, an electric apparatus, and a manufacturing method and manufacturing device of battery cell are described. The battery cell includes: an electrode assembly; a casing having an accommodating cavity for accommodating the electrode assembly; an exhaust mechanism provided on the casing, the exhaust mechanism including a connecting component and a breathable component, and the breathable component is configured to discharge gas to outside of the casing when gas pressure inside the casing reaches a threshold; and an electrolyte, filled in the casing; where gas permeability A of the breathable component, conductivity S of the electrolyte, and gas containment space V satisfy 20 mm*ms/cm*ml<AS/V<165 mm*ms/cm*ml, and the gas containment space V is a ratio of a remaining value of volume of the accommodating cavity minus volume of the electrolyte and volume of the electrode assembly to capacity of the electrode assembly.