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SYSTEM AND METHOD OF BATTERY CAPACITY ESTIMATION

  • US 20080249724A1
  • Filed: 06/12/2008
  • Published: 10/09/2008
  • Est. Priority Date: 09/24/2002
  • Status: Active Grant
First Claim
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1. In a mobile device having a profile table that relates a plurality of battery profile values with a plurality of operating parameter values, a method of determining a capacity of a battery using the profile table, comprising:

  • measuring an operating parameter of the battery;

    accessing the profile table to translate the measured operating parameter into an equivalent series resistance (ESR) value;

    adjusting the ESR value by a correction factor to generate a corrected ESR value;

    determining the capacity of the battery based at least in part on the corrected ESR value; and

    automatically calibrating the correction factor based at least in part on the measured operating parameter.

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