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:
Feb. 06, 2024
Filed:
Oct. 20, 2021
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Seigo Fujishima, Miyoshi, JP;
PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo, JP;
Abstract
A manufacturing method of a laminated power storage device disclosed herein includes a step A of preparing an electrode body to which an electrode terminal is connected, a step B of preparing a laminated film, a step C of building a power storage device assembly in which the electrode body is covered with the laminated film and is sealed, and a step D of placing the power storage device assembly in a predetermined reduced-pressure atmosphere. The power storage device assembly has a welding portion in which the laminated films are stacked and welded together in a state in which part of the electrode terminal is protruded to the outside from between the laminated films around the electrode body. A pressure of the reduced-pressure atmosphere in the step D is set so as to guarantee that a weld strength of the welding portion is not less than a predetermined strength.