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System for a hybrid vehicle; hybrid vehicle operated by the system and device for power

  • US 6,708,789 B1
  • Filed: 10/12/2001
  • Issued: 03/23/2004
  • Est. Priority Date: 10/05/1999
  • Status: Expired due to Term
First Claim
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1. A hybrid vehicle controlling and operating system including an internal combustion engine (1) operable at a constant rotation;

  • a generator (2) driven by the internal combustion engine and providing a constant output voltage;

    a direct current electric motor (4) receiving power from said generator and providing the sole and exclusive drive source for the hybrid vehicle;

    a rechargeable battery source (3) connectable with the electric motor such that the battery source output voltage is provided as the input voltage to the electric motor only when the generator power supplied to the electric motor is insufficient to meet the power requirements of the electric motor, said battery source maintained charged by surplus charge from the generator and charge generated by the electric motor;

    an electrical control system means for controlling the electric power supply to said electric motor including means for supplying power to the electric motor only from the generator until the maximum power of the generator is insufficient to supply the power requirements of the electric motor, and for supplying additional power from the battery source only when the maximum power of the generator is insufficient to supply the power requirements of the electric motor, said electrical control system means further includes means for maintaining and controlling the charge and discharge of said battery source including evaluating the charge condition of the battery source, the surplus charge generated by the generator and the electric motor.

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