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. 24, 2023
Filed:
Jan. 16, 2020
Sanyo Electric Co., Ltd., Daito, JP;
SANYO Electric Co., Ltd., Osaka, JP;
Abstract
A negative electrode includes a negative electrode protecting layer that is disposed so as to cover a negative electrode active material layer formed on at least one surface of a negative electrode core in a thickness direction and that has higher electrical resistance than the negative electrode active material layer. The negative electrode active material layer includes a first surface and a second surface. The first surface is formed in a region extending from an edge at one end to a boundary 300 μm away from the edge in a width direction. The second surface is positioned closer than the first surface to the other end. Regarding the negative electrode protecting layer, the average value of the first thickness of a first portion covering the first surface is 1.7 or more times larger than the maximum value of the second thickness of a second portion covering the second surface.