Patent ID: 7662496

Claim:
A cooling system for a fuel cell of a fuel cell system located in a vehicle, comprising: a cooling apparatus that regulates the temperature of the fuel cell by supplying a cooling liquid to the fuel cell using a pump, an impurity-removing device provided in a cooling liquid passage for the cooling liquid, which removes impurities within the cooling liquid, an impurity detector configured to detect the state of impurities in the cooling liquid, and a flow generator that determines whether impurities exceed a predetermined value, after confirming that the fuel cell is stopped, and that causes the cooling liquid inside the cooling liquid passage to flow through the impurity removing device by activating the fuel cell in a case that the flow generator determines that impurities exceed the predetermined value, or determines whether impurities exceed a predetermined value, after confirming that the pump is stopped, and that causes the cooling liquid inside the cooling liquid passage to flow through the impurity removing device by activating the pump in a case that the flow generator determines that impurities exceed the predetermined value.