| 摘要 |
[Problem] To obtain a fuel cell system (11) having a long-lifespan fuel cell stack (13). [Solution] The fuel cell system (11) is provided with: the fuel cell stack (13); an oxidant gas feed channel (53) for feeding an oxidant gas to the fuel cell stack (13); an oxidant off-gas discharge channel (59) for discharging the post-reaction oxidant off-gas (air) from the fuel cell stack (13); a compressor (11); a circulation channel (67) communicating between a branching part (73) and a confluence part (75); a circulation pump (69) for sending the oxidant off-gas (air) from the branching part (73) to the confluence part (75); a check valve (71) for suppressing the flow of the oxidant off-gas (air) in the reverse direction with respect to the forward direction from the branching part (73) to the confluence part (75); and a controller (21) for performing control to drive the circulation pump (69) when the fuel cell stack (13) is not in operation. |
