| 摘要 |
Provided are an apparatus for recirculating the exhaust gas of a fuel cell to allow a stack to be operated at an optimum state by recovering the exit air exhausted from a stack and reusing it, and its control method. The control method comprises the steps of (ST100) flowing the air of the outside of vehicle by using an air supply device; (ST200) controlling the state of flown-in air; (ST300) humidifying the hydrogen gas flown from a hydrogen supply device; and (ST400) supplying the air and the hydrogen gas whose state is controlled, into a stack. The apparatus comprises an air supply device; an air amount control part; a stack; a hydrogen gas supply part; a humidification part; a hydrogen recirculation pump; a sensor for sensing temperature and humidity; and a control part. |
