| 摘要 |
Disclosed is a device and method for controlling hydrogen concentration of a fuel cell system to maintain the concentration of hydrogen of an anode at a proper level in accordance with the concentration supplied to a fuel cell. More specifically, a hydrogen concentration measuring sensor is directly provided in a hydrogen storage device, the hydrogen concentration and the impurity concentration in an anode channel of the fuel cell system are estimated based on a measured hydrogen concentration, and when it is determined that the hydrogen concentration in the anode channel falls under a reference value at which the fuel cell system can be stably operated, purge control for discharging the gases (hydrogen and impurities) in the anode channel to the outside is performed, so that the hydrogen concentration in the anode channel of the fuel cell system can be maintained equal to or higher than the reference value. |
