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:
Aug. 13, 2024
Filed:
Sep. 25, 2019
Zeon Corporation, Tokyo, JP;
Koji Annaka, Tokyo, JP;
Masanobu Sato, Tokyo, JP;
ZEON CORPORATION, Tokyo, JP;
Abstract
A secondary battery includes a laminate in which a positive electrode, separator, and negative electrode are stacked in stated order. The coating weight of an adhesive material at a surface Z that is an affixing surface X of the positive electrode and separator and/or an affixing surface Y of the negative electrode and separator satisfies relationship formula (1): A (g/m)+0.02 (g/m)<B (g/m). In formula (1), A represents coating weight in an inner region P at surface Z and B represents coating weight in an outer region Q at surface Z. Inner region P is a region that has a center of surface Z as a center, has a similar shape to a shape of surface Z, and has an area equivalent to 80% of area of surface Z, and outer region Q is all regions other than inner region P at surface Z.