Patent ID: 8017277
Filing Date: 2011-09-13
Classification: H01M,Y02E

Abstract:
1. A fuel cell system comprising: a fuel gas passage that feeds fuel gas to a fuel cell; a relief valve provided in the fuel gas passage, the relief valve discharging fuel gas to the outside when fuel gas in the fuel gas passage is pressurized to an operation starting pressure for the relief valve or higher; an emission passage emitting fuel gas, which is discharged from the fuel cell, to the outside; a purge valve provided in the emission passage, the purge valve opening and closing the emission passage; a gas processing device provided on the downstream side of the purge valve in the emission passage, the gas processing device reducing the concentration of fuel gas; pressure detecting means provided in the fuel gas passage, for detecting the pressure of fuel gas in the fuel gas passage; and a control device configured to open and close the purge valve based on the pressure detecting means, wherein the control device is further configured to open the purge valve when the pressure detecting means detects a reference pressure that is set lower than the operation starting pressure of the relief valve.