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:
Mar. 31, 2009
Tomomi Maruyama, Konosu, JP;
Eiji Saiki, Konosu, JP;
Akitoshi Kato, Kawasaki, JP;
Yoshihiro Honda, Tokorozawa, JP;
Tomomi Maruyama, Konosu, JP;
Eiji Saiki, Konosu, JP;
Akitoshi Kato, Kawasaki, JP;
Yoshihiro Honda, Tokorozawa, JP;
Iwasaki Electric Co., Ltd., Tokyo, JP;
Tokyo Rectifier Co., Ltd., Kawasaki-Shi, JP;
JPS Co., Ltd., Tokorozawa-Shi, JP;
Abstract
A charging device supplies charge current to a battery group having plural secondary batteries connected in series to perform charging. In the charging device, a discharge route circuit for discharging charge current to be supplied to the secondary battery when the battery voltage of the secondary battery exceeds a predetermined voltage while charging is provided to every secondary battery. Also provided is a cut-off circuit for cutting off the discharge route circuit from each secondary battery after charging is completed. Discharge at a discharge route circuit is suppressed and energy efficiency is increased.