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:
Apr. 08, 2025
Filed:
Feb. 15, 2022
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Tomofumi Hirukawa, Nisshin, JP;
PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo, JP;
Abstract
The manufacturing method herein disclosed includes a forming step of stacking a positive electrode sheet including a positive electrode active material layer on a positive electrode collector, a negative electrode sheet including a negative electrode active material layer on a negative electrode collector, and a separator sheet, thereby forming an electrode body; a constructing step of accommodating the electrode body in a battery case, and pouring an electrolyte into the battery case, thereby constructing a battery assembly; and a charging step of charging the battery assembly. At least any one of the positive electrode active material layer and the negative electrode active material layer has an undulating shape in a stacking direction, and a pit depth of the undulation is 10 μm or more.