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. 09, 2019
Filed:
Jan. 29, 2013
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Koji Takahata, Toyota, JP;
Akihiro Ochiai, Kadoma, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Abstract
The present invention provides a sealed nonaqueous electrolyte secondary battery which is equipped with a current interrupt device that is actuated by a rise in internal pressure of a battery case and in which the current interrupt device is actuated in a speedy and stable manner during an overcharge. In the sealed nonaqueous electrolyte secondary battery, an electrode body formed by a positive electrodeand a negative electrode that oppose each other via a separator, an electrolyte, and an overcharge inhibitor are housed in the battery case. The positive electrodeincludes a positive electrode current collectorand a positive electrode active material layerwhich is formed on the current collector and which mainly contains a positive electrode active material. In addition, a conductive material layerwhich mainly contains a conductive material is formed between the positive electrode active material layerand the separator. A porosity of the conductive material layeris 35% or more and 55% or less.