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:
Dec. 30, 2003
Filed:
Jun. 08, 2000
Satoshi Aoyagi, Saitama, JP;
Hiroyuki Abe, Saitama, JP;
Hibiki Saeki, Saitama, JP;
Yusuke Hasegawa, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In the fuel cell (FC) system comprising a FC and a rechargeable battery, a demand power of the FC is calculated by subtracting the charge power to the battery from a demand power signal which indicates the demand value of a load current and using the result. Accordingly, the charge current is never supplied to the battery which is charged to the maximum ratio, which prevents the utilization ratio of the fuel cell from decreasing and which prevents the battery from overcharge. On the other hand, the battery which is discharged to the minimum ratio does not output the discharge power but the charge power is supplied to the battery. Accordingly, it prevents the battery from over discharge.