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. 25, 2016
Filed:
Dec. 04, 2013
Kosuke Iwase, Nagoya, JP;
Kosuke Iwase, Nagoya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A nonaqueous electrolyte secondary battery includes an electrode body, a non-aqueous electrolyte and a porous heat resistance layer. The electrode body is provided with a positive electrode and a negative electrode that face each other through a separator. The porous heat resistance layer is disposed at least in one of a space between the positive electrode and the separator and a space between the negative electrode and the separator and contains an inorganic filler. A porosity of the separator is not less than 70% by volume and not more than 80% by volume. A ratio of a porosity of the porous heat resistance layer with respect to the porosity of the separator is not less than 0.3 and not more than 0.6.