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:
Apr. 08, 2008
Filed:
Jun. 14, 2005
Tetsuhiro Ishikawa, Nishikamo-gun, JP;
Tsuyoshi Yano, Toyota, JP;
Tadaichi Matsumoto, Okazaki, JP;
Katsuhiko Nishiyama, Chiryu, JP;
Hiroshi Yoshida, Chiryu, JP;
Tetsuhiro Ishikawa, Nishikamo-gun, JP;
Tsuyoshi Yano, Toyota, JP;
Tadaichi Matsumoto, Okazaki, JP;
Katsuhiko Nishiyama, Chiryu, JP;
Hiroshi Yoshida, Chiryu, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
This invention provides a power supply system for supplying electrical power to a load. The system includes: a first and a second power supply wirings for a connection to the load; a fuel cell system having a fuel cell connected between the first and second power supply wiring; a secondary power supply system connected in parallel to the fuel cell between the first power supply wiring and the second power supply wiring; a switch for opening and closing the connection between the fuel cell and the first power supply wiring; a countercurrent prevention device connected between the fuel cell and the first power supply wiring; and a controller for controlling the secondary power supply system and the switch. The controller controls the secondary power supply system to boost a terminal voltage of the secondary power supply system to a first voltage, when connecting the fuel cell to the first power supply wiring. The first voltage is equal or higher than an electrical potential difference of the open terminals of the fuel cell.