Patent ID: 6684135
Filing Date: 2004-01-27
Classification: B60L,H01M,Y02E,Y02T

Abstract:
A control device for a fuel cell vehicle, comprising:a fuel cell which is used as a power supply for a driving electric motor; an electric double layer capacitor, connected parallel to the fuel cell, for discharging for compensation for an insufficient electric energy when the amount of electric energy generated by the fuel cell is insufficient; reactive gas supply means, driven by an electric energy that is supplied from the fuel cell or the electric double layer capacitor, for supplying reactive gases to the fuel cell; motor driving regenerative means, operated using the fuel cell and the electric double layer capacitor as a power supply, for regulating a driving electric energy supplied to the motor depending on a predetermined target torque to control driving torque generated in the electric motor and for regulating a regenerative electric energy recovered from the electric motor to the electric double layer capacitor to control regenerative torque generated in the electric motor; upper-limit-amount-of-generated-electric-energy recognizing means for recognizing the operating condition of the fuel cell to recognize the upper limit amount of electric energy generated by the fuel cell depending on the operating condition; current supply limiting means for limiting a current supplied from the fuel cell to the electric double layer capacitor and the motor driving regenerative means; capacitor-charging-amount-of-electric-energy recognizing means for recognizing the amount of electric energy charged into the electric double layer capacitor; and fuel cell abnormality countermeasure means for permitting the current supply limiting means to limit the current supplied from the fuel cell to the electric double layer capacitor and the motor driving regenerative means and permitting the reactive gas supply means to be driven by the regenerative electric energy of the electric motor when the upper limit amount of generated electric energy is equal to a predetermined amount of generated electric energy or lower and the amount of electric energy charged into the electric double layer capacitor is equal to a predetermined amount of charged electric energy or lower while the fuel cell vehicle is running.