Patent ID: 7897286
Filing Date: 2011-03-01
Classification: H01M,Y02E

Abstract:
1. A fuel cell system comprising: a fuel cell to which a reaction gas is supplied to generate electricity; a circulating system which returns unreacted reaction gas discharged from the fuel cell to an upstream of the fuel cell to thereby circulate the unreacted reaction gas; a discharge device which discharges the unreacted reaction gas from the circulating system; a first pressure detector which detects a pressure at a downstream of the discharge device; and a controller which calculates a discharge time during which an amount of discharged gas is discharged from the circulating system by the discharge device and discharge intervals for the discharge device discharging circulating gas, based on the pressure detected by the first pressure detector, such that as the pressure detected by the first pressure detector lowers, the discharge time becomes smaller and the discharge intervals for the discharge device discharging circulating gas become shorter.