BATTERY MODULE HAVING COOLING STRUCTURE USING INSULATION COOLANT, AND BATTERY PACK AND VEHICLE WHICH INCLUDE SAME

Disclosed is a battery module, which includes a sub module including a cell stack assembly having a plurality of battery cells and a channel spacer interposed between adjacent battery cells, a front bus bar frame assembly coupled to one longitudinal side of the cell stack assembly, and a rear bus bar frame assembly coupled to the other longitudinal side of the cell stack assembly; a module housing configured to accommodate the sub module; a front sealing plate configured to cover an opening at one longitudinal side of the module housing and having an inlet for introducing an insulation cooling liquid; and a rear sealing plate configured to cover an opening at the other longitudinal side of the module housing and having an outlet for discharging the insulation cooling liquid.