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:
Jul. 07, 2020
Filed:
Apr. 17, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Seigo Fujishima, Miyoshi, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
[PURPOSE] To provide a method for producing a pouch battery that can reduce formation of creases on the main sides and the lateral sides of the laminate film exterior body. [SOLUTION MEANS] A method for producing a pouch battery that comprises a cell stack insertion step in which a cell stack is inserted in a laminate film exterior body, an outer perimeter edge sealing step in which the outer perimeter edges of the laminate film exterior body in which the cell stack has been inserted are sealed in an airtight chamber in a state of reduced pressure, a tensile force applying step in which tensile force is applied to the outer sides in the in-plane direction at two facing locations in the in-plane direction on the outer perimeter edges of the laminate film exterior body, and a tensile force-maintained air release step, in which application of tensile force to the outer sides of the laminate film exterior body in the in-plane direction is maintained while the pressure in the airtight chamber is raised to atmospheric pressure.