Battery module, battery pack including battery module, and vehicle including battery pack

A battery module, comprising:

• a plurality of battery cells;
• a top plate configured to cover an upper side of the battery cells;
• a bottom plate disposed opposite to the top plate to cover a lower side of the battery cells;
• a pair of side plates configured to connect the bottom plate and the top plate and to cover both side surfaces of the battery cells;
• a bus bar unit connected to the pair of side plates and configured to cover a front side and a rear side of the battery cells, the bus bar unit being electrically connected to the battery cells;
• and
• a pair of heatsinks each having a coolant injection portion and a coolant discharge portion protruding out of the battery module, the pair of heat sinks being provided at the upper side and the lower side of the battery cells, respectively.