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:
Nov. 26, 2024
Filed:
Jul. 20, 2020
Sanyo Electric Co., Ltd., Daito, JP;
Nobuhiro Sakitani, Tokushima, JP;
Takaharu Morikawa, Osaka, JP;
PANASONIC ENERGY CO., LTD., Osaka, JP;
Abstract
A nonaqueous electrolyte secondary battery including an electrode body which comprises a positive electrode, a negative electrode and a separator that is arranged between the positive electrode and the negative electrode, while comprising a heat-resistant layer and a base material layer; and a nonaqueous electrolyte. The positive electrode having a positive electrode mixture layer containing a positive electrode active material and resin-coated particles obtained by coating metal-based particles with a resin that melts at a temperature from 100° C. to 150° C.; the metal-based particles contain at least either metal or metal compound particles, which are dissolved in the nonaqueous electrolyte at 4.3 V (vs. Li/Li) or less; the metal-based particles have an average particle diameter of more than 1 μm; the content of the resin-coated particles is 0.5%-10% by mass relative to the total amount of the positive electrode mixture layer; and the heat-resistant layer contains a filler and a binder.