Patent ID: 11923579
Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. The method of controlling the fuel cell device according to claim 1, further comprising:
a step of determining, as an abnormality occurrence of the fuel cell device, whether a temperature of a fuel cell of the fuel cell device is greater than a predetermined threshold, oxygen is detected in the hydrogen supply unit, or the voltage between the fuel electrode and the oxidant electrode is less than a second predetermined threshold;
a step of decreasing a load connected to the fuel cell when the temperature of the fuel cell is greater than the predetermined threshold, the oxygen is detected in the hydrogen supply unit, or the voltage between the fuel electrode and the oxidant electrode is less than the second predetermined threshold;
a step of stopping a supply of the gas to the gas supply unit and stopping a circulation of the gas via the circulation passage connecting the gas introduction passage of the gas supply unit to the gas discharge passage of the gas supply unit; and
a step of depressurizing the hydrogen supply unit and the gas supply unit.