Patent ID: 6323608
Filing Date: 2001-11-27
Classification: B60K,B60L,B60W,B60Y,F02N,H01M,H02J,Y02E,Y02T,Y10S

Abstract:
A vehicle drive system comprising:an engine;an engine drive shaft driven by said engine and a motor;a first controller operatively associated with said motor to operate said motor in one of a drive, regenerating, or power generating mode;a main battery supplying voltage to said motor to drive said motor, said main battery having a first power supply supplying a first voltage and a second power supply supplying a second voltage for an electrical load, said second voltage being of a lower value than said first voltage;a DC/DC converter connected between said second power supply and said first controller, said DC/DC converter controlling the voltage supplied to said second power supply such that said second power supply supplies said second voltage for said electrical load constantly; anda second controller connected to said DC/DC converter, said second controller switching on or off the DC/DC converter and causing said first controller to operate said motor in one of said drive, regeneration, or power generation mode.