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. 19, 2013
Filed:
Mar. 26, 2010
Applicants:
Katsunori Maegawa, Toyohashi, JP;
Toshiaki Nakanishi, Toyohashi, JP;
Motoyoshi Okumura, Chiryu, JP;
Inventors:
Assignee:
Panasonic EV Energy Co., Ltd., Kosai-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/30 (2006.01); G06F 17/40 (2006.01); G01R 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A two-dimensional map for calculating an SOC of a secondary battery is corrected. A battery ECU obtains a voltage index of a secondary battery. The voltage index is, for example, a no-load voltage of the secondary battery. When an amount of change of the calculated no-load voltage from an initial state falls outside a predefined range, the battery ECU corrects the two-dimensional map of initial state which is stored in advance in a storage unit using data obtained by statistically processing a plurality of two-dimensional maps obtained from a plurality of vehicles.