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. 31, 2015
Filed:
Jun. 03, 2009
Tetsuro Shigemizu, Nagasaki, JP;
Masami Iida, Nagasaki, JP;
Takehiko Nishida, Nagasaki, JP;
Masazumi Ohishi, Tokyo, JP;
Kazuyuki Adachi, Fukuoka, JP;
Shinji Murakami, Fukuoka, JP;
Yoshihiro Wada, Fukuoka, JP;
Tetsuro Shigemizu, Nagasaki, JP;
Masami Iida, Nagasaki, JP;
Takehiko Nishida, Nagasaki, JP;
Masazumi Ohishi, Tokyo, JP;
Kazuyuki Adachi, Fukuoka, JP;
Shinji Murakami, Fukuoka, JP;
Yoshihiro Wada, Fukuoka, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Kyushu Electric Power Co., Inc., Fukuoka-shi, JP;
Abstract
The battery state-of-charge calculation device () is provided with a SOCV calculation unit () which outputs a first state of charge calculated based on voltage data, a SOCI calculation unit () which outputs a second state of charge calculated based on current data, an estimated impedance voltage calculation unit () which calculates an impedance voltage value based on an effective state of charge and the current data, a static determination unit () which determines that the impedance voltage value remains static for a predetermined time or longer in a range identified by a predetermined threshold value and outputs the determination result; and a SOC decision unit () which, based on the determination result, outputs the first state of charge as the effective state of charge where the impedance voltage value is static and outputs the second state of charge as the effective state of charge where the impedance voltage value is not static.