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:
Mar. 22, 2016
Filed:
Apr. 18, 2011
Youhei Kawahara, Tokyo, JP;
Ryouhei Nakao, Tokyo, JP;
Akihiko Kudo, Hitachinaka, JP;
Akihiko Emori, Hitachinaka, JP;
Keiichiro Okawa, Hitachinaka, JP;
Yoshinori Aoshima, Hitachinaka, JP;
Youhei Kawahara, Tokyo, JP;
Ryouhei Nakao, Tokyo, JP;
Akihiko Kudo, Hitachinaka, JP;
Akihiko Emori, Hitachinaka, JP;
Keiichiro Okawa, Hitachinaka, JP;
Yoshinori Aoshima, Hitachinaka, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Ibaraki, JP;
Abstract
An electric storage device includes an assembled battery including a plurality of electric cells connected in series; an assembled battery control unit that estimates internal resistances of the plurality of electric cells, or a magnitude relationship of the internal resistances of the plurality of electric cells; an assembled battery control unit that calculates such a discharge quantity that an SOC after the electric cells have been discharged becomes lower as the internal resistance of the electric cells, which is estimated by the assembled battery control unit, is larger, or as the magnitude relationship of the internal resistances of the electric cells is estimated to be larger by the assembled battery control unit, for each of the electric cells; and electric cell control units that discharge each of the plurality of electric cells on the basis of the discharge quantity calculated by the assembled battery control unit.