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:
Mar. 03, 2020
Filed:
Mar. 16, 2016
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Kosuke Iwase, Nagoya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a first separator layer provided between the positive electrode and the negative electrode, the first separator layer facing the positive electrode, a second separator layer provided between the positive electrode and the negative electrode, the second separator layer facing the negative electrode, and a non-aqueous electrolyte held in the first separator layer and the second separator layer. The variable α represents the porosity of the first separator layer, and the variable β represents the porosity of the second separator layer, such that α≤90% and the following expression is satisfied:2≤α/β≤2.85.