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. 03, 2012
Filed:
Sep. 24, 2009
Keiji Kishimoto, Osaka, JP;
Hiroshi Abe, Osaka, JP;
Tomoaki Uenishi, Osaka, JP;
SANYO Electric Co., Ltd., Moriguchi-Shi, JP;
Abstract
A power supply devicecomprises a plurality of power storage devicesconnected in parallel, and includes an NTCthat detects a temperature of each of the plurality of power storage devices, an FETconnected to each of the plurality of power storage devices in series, and a control unit that controls ON and OFF states of the FET. The control unit performs a temperature control to increase a time ratio of the OFF state in controlling the ON and OFF states of the FETbased on the temperature detected by the NTC. Thus, a power supply device and an electric vehicle that can restrain shortening of the life duration of the device as a whole can be provided by restraining increase and variation of the temperature of each power storage device.