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POWER CONVERSION CONTROLLING METHOD OF FUEL CELL-BATTERY HYBRID-ELECTRIC VEHICLE AND CONTROL DEVICE

  • US 20100332060A1
  • Filed: 05/21/2007
  • Published: 12/30/2010
  • Est. Priority Date: 05/21/2007
  • Status: Abandoned Application
First Claim
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1. A method of controlling power allocation of a fuel cell-battery hybrid system, comprising:

  • a reference value setting step of setting a mode switching output value, which is a reference for switching of power supply status and power allocation between a fuel cell and a battery, within a range below a maximum power value of a motor supplied with a constant voltage from the fuel cell and/or the battery;

    a requested value extraction step of extracting an output value, requested by the motor, in real time during traveling;

    an output value comparison step of comparing the mode switching output value with the requested output value extracted from the motor in real time;

    a low-output switching step of, when the requested output value is less than the mode switching output value, operating a fuel cell converter, which supplies a constant voltage from the fuel cell to the motor, and stopping operation of a battery converter, which supplies a constant voltage from the battery to the motor; and

    a high-output switching step of, when the requested output value is equal to or greater than the mode switching output value, simultaneously operating both the fuel cell converter and the battery converter in a predetermined output ratio.

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