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. 23, 2026
Filed:
Aug. 18, 2020
Sanyo Electric Co., Ltd., Daito, JP;
Nobuhiro Sakitani, Tokushima, JP;
Takaharu Morikawa, Osaka, JP;
PANASONIC ENERGY CO., LTD., Osaka, JP;
Abstract
The non-aqueous electrolyte secondary battery according to an aspect of the present disclosure comprises: a wound electrode body on which a strip-like positive electrode and a strip-like negative electrode are each wound with a separator interposed therebetween; and an outer package accommodating the electrode body. The positive electrode comprises a positive current collector and a positive mixture layer that is formed on the positive current collector and contains at least a positive active material and a binder. The negative electrode comprises a negative current collector and a negative mixture layer that is formed on the negative current collector and contains at least a negative active material and a binder. At least one of the positive mixture layer and the negative mixture layer has a binder content that is higher on a leading end than on a terminal end.