METHOD TO CHARGE LITHIUM-ION ACCUMULATOR BATTERY FROM n SERIALLY CONNECTED ACCUMULATORS WITH BALANCING RESISTORS CONNECTED TO THEM VIA SWITCHBOARDS Russian patent published in 2013 - IPC H01M10/44 

FIELD: electricity.

SUBSTANCE: method is proposed to charge a lithium-ion battery from n serially connected accumulators with balancing resistors connected to them via switchboards, which consists in monitoring of accumulator voltage and disconnection of charging as voltage of any accumulator achieves the specified maximum value. The set objective is solved by the fact that whenever charging is connected, an accumulator is selected with the least current voltage, and balancing resistors are connected to remaining accumulators for the time individual for each accumulator and proportional to the value of its unbalance by voltage relative to the selected accumulator with the least current voltage. Besides, the time of balancing resistor connection to each accumulator is limited with a moment of levelling of the current value of its voltage to the voltage value of the previously selected accumulator, with the least current voltage, but not more than the time of charge connection, or time T_i of resistor connection to each accumulator is calculated on the basis of the following ratio: T_i=(1-U_min/U_i)·k·R, where U_min - the least current voltage of the accumulator in the accumulator battery, B; U_i - voltage of i accumulator from the number of the remaining ones, B; k - coefficient of recalculation of a difference of accumulator voltages into an unbalance capacitance, A·hr/V; R - resistance of balancing resistors, Ohm. The substance of suggested solution is explained in the drawing, where in the dwg 1 the functional diagram of the autonomous power supply system is pictured, which explains operation according to the suggested method.

EFFECT: increase of lithium-ion battery use effectiveness and simplified operation.

3 cl, 1 dwg