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. 26, 2021
Filed:
Jun. 05, 2019
Ningde Amperex Technology Limited, Fujian, CN;
Jing Jiang, Fujian, CN;
Liangzhen Xiao, Fujian, CN;
NINGDE AMPEREX TECHNOLOGY LIMITED, Fujian, CN;
Abstract
The present application provides a wound electrode assembly, comprising a first and second electrode plates having a first and second current collectors respectively, the first electrode plate has an empty foil segment having an area where the first electrode plate is bent for the first time, and the second electrode plate has a second head segment; the second current collector in the second head segment is coated with active substance on both sides, and projections of a starting end and an ending end of the empty foil segment in a thickness direction fall on the second head segment. The purpose of the present application is to provide a wound electrode assembly to effectively avoid lithium dendrite while improving the utilization of the battery material and the energy density of the battery, thereby improving the safety performance of the battery.