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:
Jan. 23, 2018
Filed:
Oct. 15, 2013
Yutaka Oyama, Toyota, JP;
Keiichi Takahashi, Nishinomiya, JP;
Yutaka Oyama, Toyota, JP;
Keiichi Takahashi, Nishinomiya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
The sealed nonaqueous electrolyte secondary battery includes a nonaqueous electrolyte containing a gas generator that is decomposed to generate a gas when a prescribed battery voltage is exceeded, and a battery case that includes a current interrupt device that operates when the pressure within the battery case rises accompanying the gas generation. A positive electrode () has a positive electrode mixture layer () that contains at least a positive electrode active material (). This positive electrode mixture layer () contains, as conductive agents, electroconductive carbon particles () and an expanded graphite () that has an average pore diameter of 0.2 μm to 0.5 μm.