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Method for resetting a state of charge fo a battery of a hybrid electric vehicle

  • US 20040119441A1
  • Filed: 12/18/2002
  • Published: 06/24/2004
  • Est. Priority Date: 12/18/2001
  • Status: Active Grant
First Claim
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1. A method for resetting a state of charge of a battery for a hybrid electric vehicle, comprising:

  • determining whether a discharge current of the battery is greater than a predetermined discharge current;

    determining whether a minimum voltage module has changed, if the discharge current of the battery is greater than the predetermined discharge current;

    determining whether a theoretical discharge voltage is greater than a voltage of the minimum voltage module, if the minimum voltage module has changed;

    determining whether the theoretical discharge voltage remains greater than the voltage of the minimum voltage module for a predetermined period of time, if the theoretical discharge voltage is greater than the voltage of the minimum voltage module; and

    setting a state of charge of the battery as a very low state, if the theoretical discharge voltage remains greater than the voltage of the minimum voltage module for the predetermined period of time.

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