Patent ID: 7682721
Filing Date: 2010-03-23
Classification: H01M,Y02E

Abstract:
1. A fuel cell system comprising: a fuel cell body having an anode electrode supplied with fuel gas containing hydrogen and a cathode electrode supplied with oxidizer gas; a catalyst degradation-suppressing device operative to interrupt supplying oxidizer gas to the cathode electrode after disconnecting an external load from the fuel cell body and allow a load current, generated by the fuel cell body, to be extracted by an internal load while supplying the fuel gas to the anode electrode; a hydrogen supply stop device operative to interrupt a supply of the fuel gas to the anode electrode except for residual hydrogen being supplied thereto during a period in which the load current is extracted by the internal load; and a load current control device configured to control a target load current such that after the supply of fuel gas to the anode electrode is stopped, a pressure inside the anode electrode is maintained at a target pressure.