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:
Dec. 02, 2025
Filed:
Oct. 20, 2020
Sanyo Electric Co., Ltd., Osaka, JP;
Go Yamashiro, Hyogo, JP;
SANYO Electric Co., Ltd., Osaka, JP;
Abstract
Power supply device includes a plurality of secondary battery cells each including an outer covering can having a quadrangular shape, a plurality of separators interposed between the plurality of secondary battery cells, a pair of end plates covering both side end faces of battery stack in which the plurality of secondary battery cells are stacked with the plurality of separators interposed between the plurality of secondary battery cells, and a plurality of fastening members each having a plate shape extending in a stacking direction of the plurality of secondary battery cells, and disposed on opposing side surfaces of battery stack to fasten the pair of end plates to each other. Separator has a spring constant of less than or equal to 500 kN/mm.