NOVELTY - The device has a power management apparatus (10) for detecting battery electric power residual amount from time-dependent change of a secondary battery (12), where a power supply value of the secondary battery computed from the electric power residual amount value is transmitted to a control apparatus i.e. air-conditioner electronic control unit (1), and information is shared among electrical components i.e. alternating current motors (3). The control apparatus determines electric power used by the electrical components according to a content of the information to be shared.    USE - Electrical component drive device for controlling a power supply from a direct current power supply i.e. high voltage secondary battery, mounted in a hybrid motor vehicle i.e. car, to an electrical component e.g. motor such as alternating current motor and propulsion motor, electric compressor (claimed), and a positive temperature coefficient heater.    ADVANTAGE - The device eliminates need to change software of the power management electronic control unit when electrical component which uses the high voltage battery to the motor vehicle in view of problem is added so as to simplify process of the power management electronic control unit, thus restraining performance of a CPU and aiming at cost reduction for the device.    DETAILED DESCRIPTION - The electrical components are propulsion motors (4, 5), electric compressors (17) and positive temperature coefficient heaters (18). The power management apparatus is a power management electronic control unit.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of a structure to which power management electronic control unit performs electric power control of an electrical component in a hybrid vehicle, which mounts a charging control apparatus of a battery.'(Drawing includes non-English language text)'    Air-conditioner electronic control unit (1)    Alternating current motors (3)    Propulsion motors (4, 5)    Power management apparatus (10)    Secondary battery (12)    Electric compressors (17)    Positive temperature coefficient heaters (18)