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:
Oct. 16, 2012
Filed:
Dec. 22, 2009
Hiroyuki Jimbo, Aichi, JP;
Harumi Murochi, Aichi, JP;
Tomoya Kikuchi, Aichi, JP;
Yasuyuki Yoshihara, Aichi, JP;
Hiroyuki Jimbo, Aichi, JP;
Harumi Murochi, Aichi, JP;
Tomoya Kikuchi, Aichi, JP;
Yasuyuki Yoshihara, Aichi, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The present invention provides a battery charging system that includes: an assembled battery, in which a plurality of secondary batteries are connected in parallel using valve-regulated lead-acid batteries in which separators impregnated with electrolyte are arranged between mutually opposed plate-like positive electrodes and negative electrodes; and a plurality of charging units that are provided corresponding to the respective secondary batteries and that charge the corresponding secondary battery, respectively, wherein each of the charging units executes multistage constant-current charging in which constant-current charging is repeated a preset plurality of times for supplying current of a prescribed set current value to each corresponding secondary battery until the terminal voltage of the each corresponding secondary battery reaches a prescribed charging cutoff voltage, and also the set current value is reduced each time the constant-current charging is repeated.