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. 10, 2023
Filed:
Oct. 10, 2022
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Mingling Li, Ningde, CN;
Jia Peng, Ningde, CN;
Xin Liu, Ningde, CN;
Cheng Li, Ningde, CN;
Xianghui Liu, Ningde, CN;
Qisen Huang, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde, CN;
Abstract
This application provides a current collector and a preparation method thereof, a secondary battery containing such current collector, a battery module, a battery pack, and an electric apparatus. The current collector in this application includes a support layer, a binder layer, and a metal layer, where the binder layer is arranged between the support layer and the metal layer, the binder layer includes an organic binder and inorganic particles, a thickness Dof the binder layer is 1.0-5.0 μm, optionally 1.0-3.0 μm; and the inorganic particles include large particles with a median particle size Dand small particles with a median particle size D, and the median particle sizes of the large particles and the small particles satisfy the following relationships: D>D; D=(0.5-0.9)×D; and D=(0.1-0.4)×D.