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HYBRID VEHICLE

  • US 20110093151A1
  • Filed: 06/08/2009
  • Published: 04/21/2011
  • Est. Priority Date: 06/30/2008
  • Status: Active Grant
First Claim
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1. A hybrid vehicle comprising an engine, a generator capable of generating electric power from mechanical power received from the engine, a battery for storing the electric power generated by the generator, and an electric motor capable of outputting mechanical traction power from the electric power supplied from the battery and the generator, the hybrid vehicle further comprising:

  • a voltage converter for boosting a voltage of the battery and supplying the boosted voltage to the electric motor;

    a selector for selecting a first mode or a second mode for the boosting operation of the voltage converter; and

    a controller for switching an upper limit of voltage boosted by the voltage converter from a first upper limit in the first mode to a second upper limit which is lower than the first upper limit when the second mode is selected by the selector, and switching the upper limit of voltage boosted by the voltage converter from the second upper limit to the first upper limit when a state of charge (SOC) of the battery drops below a threshold.

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