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. 10, 2015
Filed:
Jun. 07, 2010
Shoji Yoshioka, Tokyo, JP;
Akiko Tabuchi, Tokyo, JP;
Keita Hatanaka, Tokyo, JP;
Hidetoshi Kitanaka, Tokyo, JP;
Shoji Yoshioka, Tokyo, JP;
Akiko Tabuchi, Tokyo, JP;
Keita Hatanaka, Tokyo, JP;
Hidetoshi Kitanaka, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
A state-of-charge estimating apparatus includes at least a first arithmetic unit configured to calculate, as a first estimation value, the present estimation value calculated based on a battery capacity, the last estimation value, and an electric current flowing in and out between a current control apparatus, which controls charge and discharge amounts of a power storage apparatus, and the power storage apparatus, and a second arithmetic unit configured to calculate, during constant current control, as the present value of a second estimation value, an estimation value calculated based on an equivalent circuit model of a battery and a voltage of the battery and, on the other hand, calculate, during constant voltage control, as the second estimation value, the present estimation value calculated taking into account a resistance change of the battery based on the equivalent circuit model of the battery and the voltage of the battery.