BATTERY PACK AND VEHICLE INCLUDING SAME

A battery pack according to the present disclosure may include: a pack case having a storage space formed therein to store a plurality of battery cells, and an opening formed on one side; a pack lid configured to cover the opening; a partition frame coupled to the pack case so as to partition the storage space; a bolt having at least a portion passing through the pack lid and coupled to the partition frame; an insertion hole formed to be recessed in the partition frame; and a nut configured to be press-inserted into the insertion hole and to engage with the bolt, wherein at least a portion of the nut may be configured as a deformable portion of a material that is deformable by a compressive force and whose physical properties change in a predetermined high-temperature environment to degrade bonding strength between the bolt and the partition frame.