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:
Jul. 28, 2026
Filed:
Feb. 19, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Masanobu Takeuchi, Osaka, JP;
Manabu Takijiri, Osaka, JP;
Yoshio Kato, Osaka, JP;
Masahiro Shiraga, Osaka, JP;
Abstract
A nonaqueous electrolyte secondary battery () according to one embodiment of the present disclosure is provided with: an electrode body () which is obtained by winding a positive electrode () and a negative electrode (), with a separator () being interposed therebetween; a nonaqueous electrolyte; and a battery case () which is formed of a metal and contains the electrode body () and the nonaqueous electrolyte. The negative electrode () comprises a negative electrode collector () and a negative electrode active material layer () that contains graphite particles as a negative electrode active material; the outer circumferential surface of the electrode body () is provided with an exposure part () from which the negative electrode collector () is exposed so as to be in contact with the inner circumferential surface of the battery case (); and the graphite particles have a compressive strength of 15 MPa or more.