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. 21, 2020
Filed:
Nov. 20, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Hiroya Umeyama, Okazaki, JP;
Yukiyoshi Ueno, Gotenba, JP;
Kaoru Inoue, Hirakata, JP;
Hideki Sano, Ikeda, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A nonaqueous electrolyte secondary battery includes a wound electrode assembly in which a positive electrode having, at its one end in a width direction, a positive electrode exposed portion provided without a positive electrode mixture layer on a positive electrode current collector and a negative electrode are wound together, with a separator interposed therebetween. The positive electrode exposed portion protrudes outward in an axial direction of the wound electrode assembly relative to the separator and the negative electrode at one end in the axial direction of the wound electrode assembly. The negative electrode exposed portion protrudes outward in the axial direction of the wound electrode assembly relative to the separator and the positive electrode at the other end in the axial direction. The positive electrode exposed portion has a cutout portion at least in an outermost circumferential portion of the positive electrode.