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:
Sep. 23, 2025
Filed:
Dec. 20, 2021
Applicant:
Fdk Corporation, Tokyo, JP;
Inventors:
Misako Ikeyama, Tokyo, JP;
Rei Hanamura, Tokyo, JP;
Ryuji Ito, Tokyo, JP;
Hiroshi Yanagi, Tokyo, JP;
Assignee:
FDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 50/121 (2021.01); H01M 4/02 (2006.01); H01M 4/134 (2010.01); H01M 4/50 (2010.01); H01M 10/0525 (2010.01); H01M 50/119 (2021.01); H01M 50/124 (2021.01);
U.S. Cl.
CPC ...
H01M 50/121 (2021.01); H01M 4/134 (2013.01); H01M 4/502 (2013.01); H01M 10/0525 (2013.01); H01M 50/119 (2021.01); H01M 50/124 (2021.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01);
Abstract
In a laminate-type power storage element, laminated films forming an exterior body are each formed by sandwiching a metal layer between a resin layer and a heat sealing layer. An electrode body includes a positive electrode and a negative electrode disposed opposite to each other across a separator and is enclosed together with a non-aqueous organic electrolyte solution inside the exterior body. Particles included in the positive electrode or negative electrode have a D90 particle size less than or equal to the thickness of the heat sealing layer.