Patent ID: 7042115
Filing Date: 2006-05-09
Classification: F02N,H02J,Y02T

Abstract:
1. A power supply control system for a vehicle in which an idling stop control is performed such that an engine is automatically stopped and started in accordance with an operating state of the vehicle, the power supply control system comprising: a first battery connected to a starter of the vehicle; a second battery connected to the starter of the vehicle, and having an energy density higher than that of the first battery and having an output density lower than that of the first battery; and a controller operative to select the first battery to be connected to the starter so as to receive a power supply from the first battery under a first condition where the engine is started to cause the vehicle to take off, and to select the second battery to be connected to the starter so as to receive the power supply from the second battery under a second condition where the engine is started by the idling stop control.