Electrochemical energy store and method for determining the wear to an electrochemical energy store

  • US 7,218,079 B2
  • Filed: 04/04/2003
  • Issued: 05/15/2007
  • Est. Priority Date: 04/05/2002
  • Status: Expired due to Fees
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First Claim
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1. A method for determining the wear to an electrochemical energy store, comprising:

  • continuously determining the amounts of charge (qL) converted during charging cycles of the energy store; and

    calculating a wear variable (Qv) which characterizes the wear as a function of the determined converted amount of charge (qL);

    wherein the determined converted amount of charge (qL) is greater than a defined minimum amount of charge (qmin) per charging cycle; and

    wherein the minimum amount of charge (qmin) is in the range from 0.1 to 1×

    10

    6
    times an initial capacity (Qn) of an equivalent new energy store.

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