FUEL CELL APPARATUS

A fuel cell apparatus includes a fuel cell; a voltage level conversion unit configured to boost stack voltage generated by the fuel cell in response to a first control signal; a main battery configured to store boosted voltage output from the voltage level conversion unit; an auxiliary unit configured to be driven by auxiliary power generated using voltage stored in a sub-battery and to generate the first control signal; and a pre-charging unit configured to pre-charge the voltage level conversion unit using pre-charging voltage generated through the auxiliary unit.