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Accurate Assessment of the State of Charge of Electrochemical Cells

  • US 20160146895A1
  • Filed: 11/10/2015
  • Published: 05/26/2016
  • Est. Priority Date: 04/27/2012
  • Status: Active Grant
First Claim
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1. A method for characterizing the state of charge of an electrochemical cell, said method comprising the steps of:

  • generating a multidimensional state of charge profile corresponding to said electrochemical cell;

    measuring a plurality of open circuit voltages of said electrochemical cell corresponding to a plurality of temperatures of said electrochemical cell;

    determining a plurality of thermodynamic parameters corresponding to said electrochemical cell, wherein said thermodynamic parameters are selected from the group comprising;

    a change in enthalpy (Δ

    H), a change in entropy (Δ

    S) and a change in free energy (Δ

    G); and

    characterizing said state of charge of said electrochemical cell using said multidimensional state of charge profile and said thermodynamic parameters.

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