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:
Aug. 25, 2026
Filed:
Nov. 26, 2021
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
Xin Liu, Ningde City, CN;
Shiwen Wang, Ningde City, CN;
Qisen Huang, Ningde City, CN;
Cheng Li, Ningde City, CN;
Mingling Li, Ningde City, CN;
Jia Peng, Ningde City, CN;
Xianghui Liu, Ningde City, CN;
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong, CN;
Abstract
The present application discloses a negative electrode current collector, a negative electrode plate, and an electrochemical device. The negative electrode current collector includes an organic support layer and a copper-based conductive layer disposed on at least one surface of the organic support layer; wherein a thickness Dof the copper-based conductive layer, a tensile strength T of the organic support layer, and a thickness Dof the organic support layer satisfy a relational formula 0.01≤(300×D)/(T×D)≤0.5. The negative electrode current collector has relatively high mechanics and mechanical properties, good electrical conductivity and current collection performance, which can improve preparation yield of the negative electrode current collector, the negative electrode plate and the electrochemical device and their reliability during use, and is beneficial to enabling the electrochemical device to have relatively high electrochemical performance and relatively high gravimetric energy density.