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:
Nov. 06, 2012
Filed:
Feb. 16, 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
The present invention aims to reliably prevent overcharge by carrying out charging in just proportion during charging periods. A charging apparatusfor charging a secondary cellby supplying a charging current Ic thereto is provided with a discharge amount detectorfor detecting an amount of power discharged from the secondary cell in a non-charging state, a charge amount detectorfor detecting an amount of power charged into the secondary cell in a charging state, and a charger controllerfor stopping charging when the amount of charged power (charge amount Wc) becomes equal to the amount of discharged power (discharge amount Wc) during a charging period.