Battery Pack and Vehicle Comprising Battery Pack

A battery pack according to an embodiment of the present disclosure may includes a plurality of battery modules having at least one battery cell and having heatsink units respectively provided to upper and lower sides thereof. The heatsink unit may have a cooling channel through which a coolant flows. At least one crush beam may be provided between the plurality of battery modules. A pack tray configured to support the at least one crush beam and the plurality of battery modules may be provided. A plurality of drain holes may be provided in the pack tray to discharge the coolant out of the battery pack when the coolant leaks.