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Automatic determination of multi-frequency baselines for battery testing

  • US 9,207,285 B1
  • Filed: 05/26/2014
  • Issued: 12/08/2015
  • Est. Priority Date: 12/08/2010
  • Status: Expired due to Fees
First Claim
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1. A method for automatically generating baselines for impedance-based battery testing, the method comprising:

  • obtaining individual impedance information for each battery unit in a network of batteries by measuring the response of the battery unit to a defined electrical excitation signal;

    calculating an individual-referenced baseline for each battery unit from the individual impedance information;

    adjusting the individual-referenced baselines to account for a temperature associated with each respective battery unit, using a microprocessor;

    adjusting the individual-referenced baselines to account for a calendar age associated with each respective battery unit; and

    calculating a first population-referenced baseline from the individual-referenced baselines as adjusted, for a first point in time.

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