Method for prediction of the internal resistance of an energy storage battery, and a monitoring device for energy storage batteries

  • US 7,098,665 B2
  • Filed: 11/10/2003
  • Issued: 08/29/2006
  • Est. Priority Date: 11/13/2002
  • Status: Expired due to Fees
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First Claim
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1. A method for predicting the internal resistance of an energy storage battery in assumed environmental and battery state conditions, the method comprising:

  • subdividing the internal resistance into a first resistance component which represents the electrical resistance of the energy storage battery for the region of electron conduction and a second resistance component which represents the electrical resistance of the energy storage battery for the region of ion conduction;

    determining a first factor for the first resistance component and a second factor for the second resistance component as a function of the type of energy storage battery, wherein the first and second factors are determined by determining parameters and internal resistances for at least two conditions which differ from one another, wherein the at least two conditions are selected from environmental and battery state conditions; and

    determining the first and second resistance components to be expected for the assumed environmental and battery state conditions, wherein the first resistance component is determined from the first factor and from a battery-independent first function of parameters relating to the environmental conditions for the energy storage battery and the second resistance component is determined from the second factor and from a battery-independent second function relating to the environmental and battery state conditions for the energy storage battery.

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