Battery Pack Having Improved Coupling Structure, And Vehicle Including Same

Disclosed is a battery pack, which includes a module stack in which a plurality of battery modules are stacked; a pack housing having a lower housing configured to support the module stack at a lower side thereof and an upper housing coupled to the lower housing from an upper side of the module stack; and a plurality of displacement plates respectively coupled to inner sides of the lower housing and the upper housing to elastically press the module stack.