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. 04, 2017
Filed:
Oct. 03, 2014
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Kosuke Iwase, Nagoya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
The present invention provides a non-aqueous electrolyte secondary battery having an electrode body formed by stacking a positive electrode, a separator and a negative electrode and a non-aqueous electrolyte. The separator has a separator substrate made and a first porous heat resistance layer formed on a surface of the substrate on a side facing the positive electrode. A surface of the negative electrode on a side facing the separator is formed by a second porous heat resistance layer. The first and second porous heat resistance layers satisfy: (1) an average thickness of the first porous heat resistance layer is greater than that of the second porous heat resistance layer; (2) an average particle diameter of an inorganic filler contained in the first porous heat resistance layer is greater than that of an inorganic filler contained in the second porous heat resistance layer.