| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of continuous operation, even under a high load in the fuel cell. <P>SOLUTION: The fuel cell system 10 includes a fuel cell stack 12, a fuel gas circulation path 30, connected between a hydrogen-off gas outlet of the fuel cell stack 12 and a fuel gas supply path 24; a hydrogen pump 46 and a gas-liquid separator 32 provided to the fuel gas circulation path 30; a detour 36 connected to both connection parts 38 and 40 on upstream and downstream sides separated in a gas reflux direction of the fuel gas circulation path 30, while bypassing the gas-liquid separator 32, and flow-path switching valves 42 and 44, provided between both the connection parts 38 and 40 on the upstream and downstream sides of at least one path of the fuel gas circulation path 30 and the detour 36. The flow-path switching valves 42 and 44 are opened or closed so that the hydrogen-off gas is sent via the detour 36, to the fuel gas supply path 24, at the high-load operation of the fuel cell stack 12. <P>COPYRIGHT: (C)2011,JPO&INPIT |
