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:
Jan. 07, 2025
Filed:
Sep. 21, 2022
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
Tao Zhang, Ningde, CN;
Jianfu He, Ningde, CN;
Qian Liu, Ningde, CN;
Xueyang Sun, Ningde, CN;
Yonghuang Ye, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong, CN;
Abstract
An electrode assembly, secondary battery, battery module, battery pack and electrical device are provided. In some embodiments, the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator disposed between the positive electrode plate and the negative electrode plate, the positive electrode plate satisfies 0<CAP1/CAP2<1, in which CAP1 represents capacity of the first positive electrode film layer in Ah, CAP2 represents capacity of the second positive electrode film layer in Ah, and the electrode assembly satisfies R/R−R/R≥0, in which Rrepresents resistance of the first positive electrode film layer in Ω, Rrepresents resistance of the second positive electrode film layer in Ω, Rrepresents resistance of the first negative electrode film layer in mΩ and Rrepresents resistance of the second negative film layer in mΩ. The present applicant may extend the cycle life of the secondary battery.