Patent attributes
A battery management system includes a plurality of balancing resistors that are respectively connected to a plurality of cells that are connected in series to each other, and that respectively form a part of a balancing discharge path of each of the cells, a plurality of balancing switches configured to respectively control a flow of balancing current of the balancing discharge path, a voltage detection circuit configured to detect a voltage of opposite ends of a respective balancing resistor with respect to a balancing target cell among the cells when cell balancing is started, and a balancing control circuit configured to acquire a voltage cumulative value corresponding to a cumulative value of balancing discharge current of the balancing target cell using the voltage of the opposite ends of the respective balancing resistor, and configured to determine whether cell balancing on the balancing target cell is terminated based on the voltage cumulative value.
