BATTERY PACK

The present disclosure relates to a battery pack, and the battery pack according to an aspect of the present disclosure includes a housing having an accommodation space, and a module assembly disposed in the accommodation space, wherein the module assembly includes a module array including a plurality of stacked battery modules, and a side frame including a plate portion disposed at a side of the module array and coupled to each of the plurality of battery modules and a support portion extended from the plate portion in an outward direction of the module array and supported by the housing.