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. 16, 2019
Filed:
May. 28, 2015
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Toshihiro Wada, Chiyoda-ku, JP;
Tomoki Takegami, Chiyoda-ku, JP;
Yebin Wang, Cambridge, MA (US);
Taesic Kim, Cambridge, MA (US);
Zafer Sahinoglu, Cambridge, MA (US);
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Abstract
The rechargeable battery parameter estimation apparatus includes: a current measurement part for measuring a current flowing through a rechargeable battery, the current measurements having an offset error; a first coefficient calculation part for calculating a first coefficient, which is a partial derivative of an estimated value of an state of charge (SoC) of the battery with respect to the offset error; a second coefficient calculation part for calculating a second coefficient, which is a partial derivative of the estimated value of the SoC with respect to a capacity error, which is a difference of a typical full charge capacity from an actual full charge capacity of the battery; and an error estimation part for estimating the offset error and the capacity error from derivative information including the first coefficient and the second coefficient, the current flowing through the battery, and the estimated value of the SoC.