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Reprogramming system and electronic control unit for hybrid vehicle

  • US 20070210743A1
  • Filed: 03/01/2007
  • Published: 09/13/2007
  • Est. Priority Date: 03/08/2006
  • Status: Abandoned Application
First Claim
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1. A reprogramming system for a hybrid vehicle equipped with a main battery supplying an electric power of a high voltage to an electric motor capable of driving the hybrid vehicle and an auxiliary battery supplying an electric power of a voltage lower than the high voltage of the main battery to electric devices mounted on the hybrid vehicle, and the reprogramming system comprising:

  • an electric control unit, to which the auxiliary battery supplies the electric power, configured to perform a reprogramming process of replacing a program stored in an internal memory unit in the electric control unit with a new program transferred from a program supply device that is an outside device of the hybrid vehicle when a specified condition is satisfied;

    auxiliary battery voltage judgment means configured to judge whether or not the voltage of the auxiliary battery is not more than a reprogramming executable voltage necessary of performing the reprogramming process by the electric control unit; and

    auxiliary battery charging means configured to charge the auxiliary battery with the electric power of the main battery when the judgment result of the auxiliary battery voltage judgment means indicates that the voltage of the auxiliary battery is lower than the voltage of the reprogramming executable voltage.

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