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:
Sep. 22, 2026
Filed:
May. 04, 2022
Dongguan Amperex Technology Limited, Dongguan City, CN;
Junliang Zhu, Dongguan City, CN;
Haibing Wang, Dongguan City, CN;
Tongming Dong, Dongguan City, CN;
Wenqiang Cheng, Dongguan City, CN;
Baohua Chen, Dongguan City, CN;
Shufeng Wu, Dongguan City, CN;
Wei Yang, Dongguan City, CN;
Zhihua Qin, Dongguan City, CN;
Meina Lin, Dongguan City, CN;
DONGGUAN AMPEREX TECHNOLOGY LIMITED, Dongguan, CN;
Abstract
A wound bare electric roll includes a cathode sheet, an anode sheet and a separator, the separator being arranged between the cathode sheet and the anode sheet. The cathode sheet has an end and an anti-puncture cushion arranged on a tail exposed zone at the end of the cathode sheet. The anti-puncture cushion corresponds to an outer surface of a corner of the anode sheet. A lithium ion battery has a laminated aluminum film, and a wound bare electric roll accommodated in the laminated aluminum film.