Patent ID: 7215034
Filing Date: 2007-05-08
Classification: B60R,H02J

Abstract:
1. A power supply system for a vehicle an A.C. generator having a rotor equipped with a permanent magnet and a field coil; a high-voltage battery that has an electrical connection with the A.C. generator and is charged by the A.C generator; a low-voltage battery the voltage of which is lower than that of said high-voltage battery; a DC/DC converter that steps down the voltage of said high-voltage battery and supplies the lowered voltage to said low-voltage battery; and a control means for charging said low-voltage battery with the electric power generated through said permanent magnet in said A.C. generator when said field coil is not energized, wherein said A.C. generator comprises: a claw-pole type rotor; and the permanent magnets located between the claws of a pair of rotor yokes opposite each other, wherein the area S