Patent ID: 7531912

Claim:
A power supply control system for a vehicle, comprising: a supply line system; a first electric generating means for generating electricity through use of a mechanical drive force of a drive source of the vehicle, which drives the vehicle to run, wherein the first electric generating means is connected to the supply line system; a second electric generating means for generating electricity through use of a heat energy, wherein the second electric generating means is connected to the supply line system; and a control means for controlling the first electric generating means and the second electric generating means, wherein: the control means operates the first electric generating means to generate the electricity when a voltage of the supply line system is below a first threshold voltage; the control means stops the first electric generating means when the voltage of the supply line system is equal to or greater than the first threshold voltage; the control means operates the second electric generating means to generate the electricity when the voltage of the supply line system is below a second threshold voltage, which is different from the first threshold voltage; and the control means stops the second electric generating means when the voltage of the supply line system is equal to or greater than the second threshold voltage.