Method for intuitive quantification of battery discharge balancing quality and battery management system using the same

A method for intuitive quantification of battery discharge balancing quality and a battery management system using the same are provided. The method comprises the following steps: calculating a battery discharge balancing index (B_DQ); and determining whether the number of battery strings is 1; if not, calculating a string discharge balancing index (S_DQ); if so, assigning a value of 100% to the string discharge balancing index (S_DQ).