Patent attributes
The present invention relates to a battery management system, which includes: at least one cell group configured to include first and second battery cells connected in parallel between first and second bus bars; a plurality of first and second measurement terminals positioned on the first and second bus bars; a plurality of third and fourth measurement terminals positioned at positions on the first bus bar, which correspond to one of ends of each of the first and second battery cells, respectively; a cell voltage measuring unit configured to measure a cell voltage of the cell group by using the first and second measurement terminals; a voltage drop measuring unit configured to measure an error voltage corresponding to a resistance value of the first bus bar by using the third and fourth measurement terminals; and a battery management unit configured to calculate a corrected cell voltage by using the cell voltage and the error voltage.
