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Driving system for electric vehicles having a plurality of batteries

  • US 5,998,884 A
  • Filed: 08/24/1998
  • Issued: 12/07/1999
  • Est. Priority Date: 10/24/1997
  • Status: Expired due to Fees
First Claim
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1. A driving system for electric vehicles having a vehicle drive motor and accessory devices comprising:

  • a main battery for supplying the vehicle drive motor with an electric power through high voltage power lines;

    an accessory battery for supplying the accessory devices with an electric power which has a lower voltage than the electric power of the main battery through low voltage power lines;

    a three-phase inverter circuit including switching devices and connected to receive the electric power from the main battery and to supply three-phase alternating current voltages to the vehicle drive motor; and

    a driver circuit for switching on and off the switching devices of the three-phase inverter circuit, the driver circuit being connected to receive the electric power of the main battery.

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