METHOD AND APPARATUS FOR EQUALIZING A BATTERY MODULE, BATTERY MODULE, AND POWER MANAGEMENT CONTROLLER

This application embodiment provides a method for equalizing the battery module, an apparatus, a battery module and a power management controller, including: obtaining each first charging voltage of the first battery core and each second charging voltage of the second battery core; judging whether the first battery core and the second battery core enter their respective fully-charged interval; if the first battery core enters its corresponding fully-charged interval and the second battery core doesn't enter its corresponding fully-charged interval, discharging the first battery core until the second battery core enters its corresponding fully-charged interval; if the first battery core doesn't enter its corresponding fully-charged interval and the second battery core enters its corresponding fully-charged interval, then judging whether the maximum value of the first charging voltage of each battery cell in the first battery core is greater than a third preset value; if so, discharging the second battery core until the first battery core enters its corresponding fully-charged interval; if not, then controlling both to rest a preset time; after resting for the preset time, discharging the first battery core and the second battery core until the SOC of each battery cell in the first battery core and the second battery core enters a same state.