SYETEM AND METHOD FOR SUPPLY COOLING WATER OF FUEL CELL SYSTEM

摘要

PURPOSE: A coolant supply method for a fuel cell is provided to prevent the sudden increase of temperature difference from an inlet to an outlet inside a stack according to sudden increase of power for fuel cell stack. CONSTITUTION: A coolant supply method for a fuel cell comprises: a step of measuring output demand of a user; a step of estimating necessary output value of a fuel cell stack(2) based on the output demand; a step of estimating forecast heating value of the stack according to the necessary output value; a step of calculating coolant supply flow rate corresponding to the estimated forecast heating value; and a step of controlling rotation number of a coolant supplier(1) corresponding to the calculated coolant supply flow rate.