| US 7,585,578 B2 | ||
| Fuel cell system | ||
| Kenji Yonekura, Yokosuka (Japan); and Masatoshi Iio, Yokosuka (Japan) | ||
| Assigned to Nissan Motor Co., Ltd., Yokohama-shi (Japan) | ||
| Filed on Jul. 05, 2005, as Appl. No. 11/172,930. | ||
| Claims priority of application No. 2004-199400 (JP), filed on Jul. 06, 2004. | ||
| Prior Publication US 2006/0008689 A1, Jan. 12, 2006 | ||
| Int. Cl. H01M 8/04 (2006.01) | ||
| U.S. Cl. 429—22 [429/24; 429/25] | 16 Claims |
| 1. A fuel cell system, comprising:
a fuel cell stack configured to have a plurality of fuel cells;
a fuel gas supply unit configured to supply fuel gas to an anode of the fuel cell stack;
an oxidant gas supply unit configured to supply oxidant gas to a cathode of the fuel cell stack
a gas circulator configured to circulate anode off gas discharged from the anode to the anode;
a purge valve configured to discharge the anode off gas to the outside; and
a controller configured to, at an activation time of the system, close the purge valve, drive the gas circulator, and supply
the fuel gas from the fuel gas supply unit to the anode,
wherein after a predetermined condition has been satisfied, the controller increases an anode operating pressure to a target
operating pressure.
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