SUB PACK COMPRISING MULTIPLE UNIT MODULES AND BMS ASSEMBLY, AND BATTERY PACK COMPRISING SAME

Disclosed is a sub pack, which includes a battery module assembly having a plurality of unit modules; and a BMS assembly coupled to one longitudinal side of the battery module assembly, the battery module assembly includes a first sub module having a plurality of unit modules connected along a longitudinal direction thereof; and a second sub module having a plurality of unit modules and connected to the first sub module along a width direction of the unit module, and the BMS assembly includes a first BMS configured to control charging and discharging of the first sub module; a second BMS configured to control charging and discharging of the second sub module; and a BMS frame fastened to one longitudinal side of the battery module assembly while surrounding peripheries of the first BMS and the second BMS.