BATTERY PACK

Embodiments provide a battery pack. The battery pack includes a pack housing with a base plate and a plurality of battery cell assemblies on the base plate, in which each of the plurality of battery cell assemblies includes a plurality of battery cells arranged in a first direction, a first side beam and a second side beam spaced apart from each other with the plurality of battery cells therebetween, and a first fireproof structure coupled to the first side beam, the first fireproof structure includes a first fire-resistant sheet and a first fire-resistant adhesive layer applied to the first fire-resistant sheet, and the first fire-resistant sheet and the first fire-resistant adhesive layer include different materials.