Patent ID: 8501360

Claim:
A vehicle comprising: a fuel cell; a motor/generator that is capable of operating as both a motor and a generator for producing regenerative power; an accumulator that can be charged by power from the fuel cell and charged by regeneration power from the motor/generator; an auxiliary device that can receive power from the fuel cell and the accumulator; and a fuel cell output control device that is programmed to: calculate a power required by the motor/generator, with a positive value indicating power used for driving the motor, and a negative value indicating output of regeneration power to the accumulator; calculate a power required by the auxiliary device; and calculate an output instruction value of the fuel cell according to the sum of the required power of the motor/generator and the required power of the auxiliary device, wherein a positive output instruction value is an instruction for the fuel cell to generate power; judge whether or not the accumulator is in a charge-limited state in which charging of the accumulator is reduced or prohibited even though the accumulator is not fully charged because the accumulator exceeds a threshold temperature; change the required power of the motor/generator to zero if (i) the sum of the required power is a negative value, and (ii) the accumulator is in the charge-limited state, thereby stopping the supply of power from the accumulator to the auxiliary device and having the auxiliary device powered by the fuel cell.