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. 18, 2014
Filed:
Oct. 30, 2008
Takehiko Nishida, Nagasaki, JP;
Tetsuro Shigemizu, Nagasaki, JP;
Katsuo Hashizaki, Nagasaki, JP;
Kazuyuki Adachi, Fukuoka, JP;
Shinji Murakami, Fukuoka, JP;
Yoshihiro Wada, Fukuoka, JP;
Kouji Kurayama, Fukuoka, JP;
Hirofumi Fujita, Fukuoka, JP;
Takehiko Nishida, Nagasaki, JP;
Tetsuro Shigemizu, Nagasaki, JP;
Katsuo Hashizaki, Nagasaki, JP;
Kazuyuki Adachi, Fukuoka, JP;
Shinji Murakami, Fukuoka, JP;
Yoshihiro Wada, Fukuoka, JP;
Kouji Kurayama, Fukuoka, JP;
Hirofumi Fujita, Fukuoka, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Kyushu Electric Power Co., Inc., Fukuoka-shi, Fukuoka, JP;
Abstract
An object is to reliably conduct cell balancing operation while suppressing deterioration of batteries and maintaining operating efficiency. When the cell balance control by the cell balancing circuitis started, the system control devicesets an on/off device corresponding to the arm where the cell balance control is conducted to the open state; and when the cell balance control is completed, and the difference between the terminal voltage of a battery pack of the arm where the cell balance control has been conducted and the terminal voltages of the battery packs of the other arms falls within a preset allowable range, sets the on/off device, which has been in the open state, to the closed state.