Battery test outputs adjusted based upon battery temperature and the state of discharge of the battery

  • US 20040046564A1
  • Filed: 09/03/2003
  • Published: 03/11/2004
  • Est. Priority Date: 09/05/2002
  • Status: Active Grant
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First Claim
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1. A method of testing a storage battery, comprising:

  • (a) measuring a dynamic parameter of the battery;

    (b) obtaining an open circuit voltage of the battery;

    (c) measuring a temperature of the battery;

    (d) obtaining a fixed current value at which the battery is to be discharged;

    (e) calculating an activation voltage based on the measured and obtained conditions of the battery in steps (b) and (c); and

    (f) predicting a discharge voltage of the battery as a function of the measured battery dynamic parameter, the calculated activation voltage of the battery and the fixed current value, the discharge voltage indicative of a vehicle starting capability of the battery.

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