Patent ID: 11894586
Assignee: KIA MOTORS CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A method of controlling a fuel cell system, the fuel cell system including a gas charging line formed between a gas charging station and a high pressure vessel charged with gas by the gas charging station, a gas supplying line formed between the high pressure vessel and a stack, a regulator provided in the gas supplying line, a solenoid valve provided in the gas supplying line between the regulator and the high pressure vessel, and a check valve provided in a bypass line connecting one point of the gas supplying line between the regulator and the solenoid valve and one point of the gas charging line, wherein gas passing through the check valve only flows from the gas supplying line to the gas charging line, wherein the method comprises:
step S100 of determining whether an ignition of a vehicle in which the fuel cell system is mountable is in an “on” state;
step S200 of determining whether the high pressure vessel of the fuel cell system is charged with gas by the gas charging station before the vehicle starts up;
step S300 of measuring a pressure of the gas supplying line with a pressure sensor fastened to the gas supplying line between the regulator and the solenoid valve;
step S400 of determining whether the check valve is opened according to the pressure of the gas supplying line; and
step S500 of opening the solenoid valve when the check valve is opened in step S400 and then, in sequence, closed.