Method and device for balancing charges of a plurality of series-connected battery cells
AssigneeAgence Spatiale Europeenne
InventorsDan Hakan Lennart Olsson, Geoffrey John Dudley
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Abstract
A method and device for balancing the charges of a plurality of series-connected battery cells, the device comprising a current dissipative loop connected across the terminals of each battery cell, the voltage across each battery cell being measured, the average value of the measured voltages being determined, the measured voltage being then compared to the average value, and the measured voltage of each battery cell being adjusted to the average value so as to equalize charges of all battery cells.
Claims12
A method for balancing the charges of a plurality of series-connected battery cells (4), comprising the steps of connecting a current dissipative loop across each battery cell, measuring voltage across each battery cell, determining an average voltage value of said measured voltages, comparing each of said measured voltages to said average voltage value, and for each battery cell, adjusting said measured voltage to said average voltage value so as to equalize the charges of all battery cells.
A device for balancing the respective charge currents of a plurality of series-connected battery cells, comprising first means for measuring individual voltages of said battery cells, second means for determining an average voltage of all series-connected battery cells, and a control unit for triggering an equalization of said measured voltages with said determined average voltage.
Dependencies are inferred from the claim text.