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:
Dec. 10, 2024
Filed:
Jul. 27, 2023
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Inventors:
Shinichiro Ito, Kosai, JP;
Takanobu Yamada, Toyota, JP;
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/13 (2010.01); H01M 4/62 (2006.01); H01M 10/05 (2010.01); H01M 10/0525 (2010.01); H01M 10/42 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/13 (2013.01); H01M 4/62 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H01M 10/4235 (2013.01); H01M 2004/028 (2013.01);
Abstract
A lithium-ion secondary battery includes an inorganic filler having a mean particle size of 1 μm to 10 μm. A ratio A/B is 14 to 28, where A is a weight ratio of a second binder and the inorganic filler (i.e., second binder/inorganic filler) in an insulating layer, and B is a weight ratio of a first binder and positive electrode active material particles (i.e., first binder/positive electrode active material particles) in a positive electrode active material layer.