Patent ID: 10122035

Abstract:
A fuel cell system, comprising: a fuel cell stack configured to include a plurality of cells; a number “n” of injectors arranged in parallel to supply an anode gas to the fuel cell stack, where the number “n” represents an integral number of not less than 2; a cell voltage meter configured to measure a voltage of at least one cell among the plurality of cells; a pressure gauge configured to measure a supply pressure that is a pressure of the anode gas supplied to the fuel cell stack; and a controller configured to respectively input control signals into the number “n” of injectors by using the voltage measured by the cell voltage meter and the supply pressure measured by the pressure gauge and to control a driving number that denotes a number of injectors to be driven among the number “n” of injectors, wherein when the measured voltage is equal to or higher than a predetermined voltage value, the controller is configured to set a target value of the supply pressure and the driving number according to a required electric power, when the measured voltage is lower than the predetermined voltage value, the controller is configured to perform a first control that fixes the driving number to the number “n” while setting a target value for purging that is a higher value than the target value according to the required electric power to the target value of the supply pressure, and when the supply pressure reaches the target value for purging by the first control, the controller is configured to perform a second control that cancels fixation of the driving number while continuing setting the target value for purging to the target value of the supply pressure.