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:
Feb. 03, 2015
Filed:
Oct. 14, 2009
Youhei Kawahara, Hitachi, JP;
Akihiko Emori, Hitachi, JP;
Akihiko Kudo, Hitachinaka, JP;
Atsuo Suga, Yokohama, JP;
Masato Isogai, Mito, JP;
Kenji Kubo, Hitachi, JP;
Youhei Kawahara, Hitachi, JP;
Akihiko Emori, Hitachi, JP;
Akihiko Kudo, Hitachinaka, JP;
Atsuo Suga, Yokohama, JP;
Masato Isogai, Mito, JP;
Kenji Kubo, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
In a memory, the surface temperature and the internal resistance of an assembled battery detected under the condition where a difference between the surface and the internal temperature is within a predetermined value are stored, and an internal temperature diagnosis unit that diagnoses whether or not the internal temperature estimated by an internal temperature estimation unit is correct, detects the internal resistance with an internal resistance calculation unit when the internal temperature estimation unit estimates the internal temperature, searches for an internal resistance corresponding to the surface temperature equal to the estimated internal temperature value from among the stored internal resistances, and diagnoses the estimated internal temperature value based upon the result of comparison of a search result of the internal resistance and the internal resistance detected during internal temperature estimation.