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. 16, 2026
Filed:
Apr. 18, 2025
Zhuhai Cosmx Battery Co., Ltd., Zhuhai, CN;
Baohai Zhang, Zhuhai, CN;
Bin Li, Zhuhai, CN;
ZHUHAI COSMX BATTERY CO., LTD., Zhuhai, CN;
Abstract
A jelly roll includes: a negative electrode sheet and a positive electrode sheet, where along a first direction, the negative electrode sheet includes a negative electrode current collector having a first surface being provided with a first coating layer and a second surface being provided with a second coating layer; the first coating layer is provided with multiple grooves, and centers of two adjacent grooves are spaced apart by a first distance; the positive electrode sheet is provided with multiple convex parts and concave parts corresponding to the convex parts, and a surface on which the convex parts of the positive electrode sheet are located is opposite to a surface on which the grooves of the negative electrode sheet are located; and along a width direction of the grooves, a size of projections of the convex parts on the negative electrode sheet is greater than the first distance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile