Patent ID: 7767327

Claim:
A method of activating a vehicle fuel cell, comprising: placing a fuel cell in an activation device so as to be activated; changing a humidification state of a humidifier which supplies vapor to the fuel cell and a state of cooling water; supplying a reactant gas to the fuel cell and maintaining a no-load state; maintaining a load state while changing a flow rate of the vapor and gas supplied to the fuel cell; changing the state of the fuel cell to the no-load state, and re-supplying the reactant gas to the fuel cell; and comparing data measured when the fuel cell operates in the no-load state and data measured when the fuel cell operates in the load state respectively with a reference value; wherein the maintaining of the load state while changing the flow rate of the vapor and gas supplied to the fuel cell comprises supplying the vapor and gas to the fuel cell at a flow rate of approximately 30 l/min˜approximately 40 l/min.