Method and apparatus using a circuit model to evaluate cell/battery parameters

  • US 6,737,831 B2
  • Filed: 02/08/2002
  • Issued: 05/18/2004
  • Est. Priority Date: 09/01/1999
  • Status: Expired due to Fees
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First Claim
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1. Apparatus for determining one or more parameters of an electrochemical cell or battery comprising:

  • response sensing circuitry coupled to said cell or battery and adapted to sense time-varying electrical response of said cell or battery generated as a result of time-varying electrical excitation of said cell or battery; and

    , computation circuitry coupled to said response sensing circuitry and adapted to utilize said response to evaluate elements of a circuit model comprising the series combination of a series R-L subcircuit and a plurality of parallel G-C subcircuits, said computation circuitry further adapted to evaluate one or more said parameters from values of one or more said elements.

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