CELL STABILIZING METHOD AND SYSTEM OF ENERGY STORAGE SYSTEM (ESS)

A method and a system for stabilizing battery cells of an energy storage system (ESS) to enable uniform charge/discharge without the generation of a state of charge (SOC) deviation among the battery cells by charging/discharging the plurality of battery cells included in a battery rack differently by module unit to minimize the deterioration and impact caused by intermittent charge/discharge.