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Method for determining an effective voltage of a battery

  • US 6,859,743 B2
  • Filed: 11/27/2002
  • Issued: 02/22/2005
  • Est. Priority Date: 03/06/2002
  • Status: Active Grant
First Claim
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1. A method for determining an effective battery voltage of a battery, comprising:

  • detecting a battery voltage at a predetermined interval;

    counting a number of times the battery voltage is detected within a series of predetermined voltage ranges;

    calculating a ratio of a change of the counted number with respect to a change of the battery voltage; and

    determining a first peak point of the calculated ratio.

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