Patent ID: 7655330
Filing Date: 2010-02-02
Classification: H01M,Y02E

Abstract:
1. A method of operating a power supply system having an air supply unit, an air exhaust unit, and a fuel gas supply unit wherein the power supply system includes a fuel cell as a power supply, the power supply system consisting essentially of a humidity sensor provided on the air exhaust, a current detecting unit and a control mechanism, the method comprising: detecting with the current detecting unit an output current of the fuel cell; and controlling with the control mechanism a supplied amount of air in the air supply unit based on information generated from the humidity sensor and based on the output current detected by the current detecting unit, wherein the air supply unit includes a pump for supplying air, and wherein a control voltage applied to the pump is outputted from the control mechanism based on the information generated from the humidity sensor and based on the output current value detected by the current detecting unit.