Patent ID: 8119297

Claim:
An idle stop-start control method of a fuel cell hybrid vehicle including a fuel cell as a main power source and a storage means as an auxiliary power source, the method comprising: determining whether to perform a fuel cell stop mode by determining conditions for stopping power generation of the fuel cell; performing the fuel cell stop mode, in which a current output from a fuel cell stack is cut off, by stopping a supply of air and a supply of hydrogen to the fuel cell, if the fuel cell stop mode is determined; and performing a fuel cell restart mode by restarting the supply of air and hydrogen, if conditions for restarting the fuel cell are satisfied in the fuel cell stop mode wherein determining whether to perform the fuel cell stop mode comprises: comparing a voltage of the storage means with a predetermined voltage; and determining the fuel cell stop mode if a voltage of the storage means is above a reference voltage corresponding to a low power region or a regenerative braking region and if a current state is not a fuel cell warning state corresponding to deterioration of the fuel cell stack.