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:
May. 13, 2008
Filed:
Sep. 26, 2003
Takeshi Aso, Zushi, JP;
Takeshi Aso, Zushi, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A fuel cell system and a related control method are disclosed wherein, during start-up of a fuel cell stack, a controlleroperates a DC/DC converterin a voltage control mode to allow an electric power to be supplied from a secondary batteryto a loadat an output voltage managed by the DC/DC converter. Under such a condition, an electric power level appearing when a voltage level of the electric power to be supplied from the secondary battery to the load lies at a value greater than an open voltage level of the fuel cell stack. Next, the DC/DC converteris operative in an electric power control mode to allow the electric power to be supplied from the secondary battery to the load at a managed electric power output. Then, a level of the electric power to be supplied to the load is detected with the DC/DC converter, which permits the electric power to be supplied from the secondary battery to the load at an electric power level less than a resulting detected electric power level.