BATTERY MODULE

A battery module includes: a plurality of cell stacks, each of the cell stacks including: a plurality of unit cells arranged in a first direction; and an insulation member around the plurality of unit cells; and a module housing, in which a plurality of receiving parts are provided, ones of the cell stacks from among the plurality of cell stacks being located in a receiving part from among the plurality of receiving parts, and each of the receiving parts includes a fixing wall, the fixing wall being around the cell stack received therein and being in contact with the cell stack, and the module housing includes end walls at respective sides of each of the receiving parts in the first direction to engage end surfaces of respective sides of the cell stack received in the respective receiving part in the first direction.