BATTERY MODULE, BATTERY PACK COMPRISING SAME, AND VEHICLE

Disclosed is a battery module having a reinforcement member to reinforce the mechanical strength of a module case. To achieve the above-described object, the battery module according to the present disclosure includes a plurality of secondary batteries arranged in at least one direction, a module case including a cover portion, a bottom portion and a side portion to form an internal space in which the plurality of secondary batteries is mounted, and a reinforcement member disposed in the module case and fixed to a lower surface of the cover portion and an upper surface of the bottom portion.