Patent ID: 8557476

Claim:
A fuel cell system comprising: a fixing unit comprising a casing and a fixing member that is stored in the casing, the fixing member being made of a synthetic resin that fixes or releases hydrazine, a hydrazine supply unit that supplies the hydrazine to the fixing unit, the hydrazine supply unit comprising: a hydrazine reservoir configured to reserve the hydrazine; and a material supply line that is made of a pipe and connected with the hydrazine reservoir and the casing so as to supply the hydrazine from the hydrazine reservoir to the casing, a releasing liquid supplying unit that supplies a water-based releasing liquid for releasing hydrazine fixed in the fixing unit to the fixing unit, the releasing liquid supplying unit comprising: a releasing liquid reservoir configured to reserve the water-based releasing liquid; and a releasing liquid supply line that is made of a pipe and connected with the releasing liquid reservoir and the casing so as to supply the water-based releasing liquid from the releasing liquid reservoir to the casing, a fuel cell to which hydrazine released in the fixing unit is supplied as fuel, a fuel supply line that is made of a pipe and connects the casing and the fuel cell so as to supply the hydrazine released from the fixing member and present in the casing to the fuel cell, a sensing unit configured to detect an amount of hydrazine supplied to the fuel cell, the sensing unit being provided in the fuel supply line, and a detection unit configured to detect an amount of hydrazine fixed in the fixing unit based on a predetermined theoretical hydrazine supply amount to the fuel cell and a hydrazine supply amount detected by the sensing unit, the detection unit including an indicator configured to display the amount of hydrazine fixed in the fixing unit, the amount being detected by the detection unit.