Fuel cell vehicle, method of controlling startup thereof, and recording medium storing program to execute the method

A method of controlling startup of a fuel cell vehicle, comprising:

• providing a cell stack comprising a plurality of stacked unit cells, a boost converter configured to receive a first target voltage from the cell stack, a supercapacitor, and an initial charging converter configured to receive a second target voltage from the cell stack;
• connecting an output side of the cell stack to the initial charging converter to charge the supercapacitor if startup of the fuel cell vehicle is requested and a level of a capacitor voltage charged in the supercapacitor is equal to or lower than a level of a stack voltage output from the cell stack;
• connecting an output side of the boost converter to the supercapacitor to charge the supercapacitor if the level of the capacitor voltage exceeds the level of the stack voltage and the supercapacitor is being charged;
• and
• disconnecting the output side of the cell stack from the initial charging converter to complete startup if the boost converter has received the first target voltage from the cell stack and the output side of the boost converter is connected to the supercapacitor.

A computer-readable recording medium, comprising:

• a memory storage comprising a program containing computer executable code configured to execute a method of controlling startup of a fuel cell vehicle, the fuel cell vehicle comprising a cell stack comprising a plurality of stacked unit cells, a boost converter configured to receive a first target voltage from the cell stack, a supercapacitor, and an initial charging converter configured to receive a second target voltage from the cell stack, the program being configured to implement:
• a function of connecting an output side of the cell stack to the initial charging converter to charge the supercapacitor if startup of the fuel cell vehicle is requested and a level of a capacitor voltage charged in the supercapacitor is equal to or lower than a level of a stack voltage output from the cell stack;
• a function of connecting an output side of the boost converter to the supercapacitor if the level of the capacitor voltage exceeds the level of the stack voltage and the supercapacitor is being charged;
• and
• a function of disconnecting the output side of the cell stack from the initial charging converter to complete startup if the boost converter has received the first target voltage from the cell stack and the output side of the boost converter is connected to the supercapacitor.