Electric power device used in motor vehicle, has power controller to limit load current if power supply voltage determined based on battery and load conditions, is less than predetermined value

摘要

Electric power supply unit which supplies power to loads (16a-16c), has generator (12) and battery (13). Change in power supply voltage to meet load requirement is determined by determining battery condition and load conditions. If the voltage determined is less than a predetermined value, power controller (11) limits current to load.