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Power source for a hybrid vehicle

  • US 20060232235A1
  • Filed: 04/14/2006
  • Published: 10/19/2006
  • Est. Priority Date: 04/15/2005
  • Status: Active Grant
First Claim
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1. A power source for a hybrid vehicle having an engine and a motor generator and using a high voltage for driving the motor generator, a medium voltage for driving a motor of an auxiliary device, and a low voltage for a controller, and including a secondary battery for the high voltage and a secondary battery for the low voltage, comprising;

  • a step-down circuit for stepping down the medium voltage to the low voltage and aback electromotive force detecting means for detecting generation of a back electromotive force in the motor of the auxiliary device and charging the low voltage stepped down by the step-down circuit in the secondary battery for the low voltage.

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