Voltage calibration method
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United States of America Patent
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Nov 17, 2015
Grant Date -
Apr 25, 2013
app pub date -
Jul 27, 2012
filing date -
Oct 21, 2011
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Abstract
In a rechargeable battery set, an average voltage is computed from average voltage drop produced by the sum of internal resistances of each battery cell. A calculated internal resistance of each battery cell is then computed from a measured voltage of each battery cell and the average voltage. Finally, the measured voltage of each battery cell is calibrated according to the calculated internal resistance and a calibrated voltage of each battery cell may be computed. In such way, the calibrated voltage of each battery cell is much closer to a real voltage of the battery cell, which provides a battery control unit more precise information when charging/discharging the battery cells.
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