Patent ID: 7998633
Filing Date: 2011-08-16
Classification: H01M,Y02E

Abstract:
1. A fuel cell system comprising: a fuel cell for generating electricity from a fuel gas and an oxidant gas supplied thereto; a fuel gas supply passage connecting a fuel gas supply with the fuel cell; an oxidant gas supply passage connecting an oxidant gas supply with the fuel cell; a combustor for combusting fuel gas and oxidant gas; a branch fuel gas flow passage connecting the fuel gas supply passage to the combustor; a first branch oxidant gas flow passage connecting the oxidant gas supply passage, at a point upstream of said fuel cell, to the combustor; a fuel off-gas flow passage for exhausting fuel gas from the fuel cell; an oxidant off-gas flow passage for exhausting oxidant gas from the fuel cell; a first heat exchanger associated with said combustor for transferring heat generated by combustion in the combustor to a heat transfer medium; and a heat transfer medium circulation passage connecting the first heat exchanger to the fuel cell for circulating the heat transfer medium between the first heat exchanger and the fuel cell, wherein the branch fuel gas flow passage comprises: wherein the pressure control unit is provided in a second branch oxidant gas flow passage branching from the first branch oxidant gas flow passage, and detects the pressure in the first branch oxidant gas flow passage as a signal pressure.