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SYSTEMS AND METHODS FOR DIAGNOSING BATTERY VOLTAGE MIS-REPORTING

  • US 20090315698A1
  • Filed: 06/19/2008
  • Published: 12/24/2009
  • Est. Priority Date: 06/19/2008
  • Status: Active Grant
First Claim
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1. A method for diagnosing a battery voltage misreporting, the method comprising:

  • monitoring a voltage of a battery;

    calculating battery charge state data by computing time derivatives of the monitored battery voltage across a range of battery voltages;

    comparing the calculated battery charge state data to expected charge state data; and

    generating an error message if the battery charge state data differs from the expected charge state data by a predetermined amount.

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