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. 16, 2024
Filed:
Jul. 26, 2019
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 constituted by closing an open end of quadrangular exterior can opened at one end, with sealing plate; insulating separator interposed between adjacent secondary battery cells; one pair of end plates covering both end faces of battery stack constituted by stacking the plurality of secondary battery cells; and a plurality of fastening members fastening end plates together. Power supply device is configured such that within a region where separator is in contact with secondary battery cell, separator is made less easily deformable in a region on the side of sealing plate than other regions. As a result, a portion of separator in contact with the side of sealing plate is made not to easily deform, and therefore, when secondary battery cell expands, a joint portion between sealing plate and exterior can is protected, and meanwhile, exterior can is allowed to deform at other portions, and thereby, the deformation during expansion can be mitigated.