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:
Jun. 18, 2013
Filed:
Mar. 30, 2010
Youhei Kawahara, Hitachi, JP;
Yoshinori Aoshima, Tsukubamirai, JP;
Kenichiro Tsuru, Hitachinaka, JP;
Akihiko Kudo, Hitachinaka, JP;
Akihiko Emori, Hitachi, JP;
Tatsumi Yamauchi, Hitachiota, JP;
Youhei Kawahara, Hitachi, JP;
Yoshinori Aoshima, Tsukubamirai, JP;
Kenichiro Tsuru, Hitachinaka, JP;
Akihiko Kudo, Hitachinaka, JP;
Akihiko Emori, Hitachi, JP;
Tatsumi Yamauchi, Hitachiota, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Vehicle Energy, Ltd, Hitachinaka-shi, JP;
Abstract
A state detection device for power supply system comprises: a measurement unit that obtains current, voltage, and temperature at a chargeable and dischargeable power storage unit as measurement values; a storage unit that stores property information of the power storage unit; an arithmetic unit that uses different methods to calculate first and second states of charge for the power storage unit based upon the measurement values and the property information; a conflict detection unit that detects a conflict in an event that a difference between the first state of charge and the second state of charge is equal to or greater than a predetermined threshold; and a correction unit that corrects the property information during charging or discharging of the power storage unit in response to the conflict having been detected by the conflict detection unit.