BATTERY BOX

This disclosure relates to a battery pack, including: an upper cover (1) including an upper cover body and an explosion-proof exhaust structure (3), the upper cover body including a top plate (11) in an upper part and a side plate (12), and an opening in a lower part, the explosion-proof exhaust structure (3) being disposed on the side plate (12), and an exhaust duct being provided between the top plate (11) and the explosion-proof exhaust structure (3); and a lower housing (2), where the upper cover (1) is disposed above the lower housing (2), the lower housing (2) is disposed with batteries (5), and each of the batteries is provided with an explosion-proof valve (51). The exhaust structure (3) of the upper cover (1) of the battery pack is disposed on the side plate (12). Hot gas rapidly increased in the battery pack due to thermal runaway is exhausted from a lateral side by the explosion-proof exhaust structure (3) disposed on the side plate (12), thereby effectively reducing safety hazards to a passenger compartment caused by the hot gas exhausted from an upper end of the battery pack. In addition, the battery pack can be manufactured by improving an existing upper cover structure, thereby possessing advantages of cost-efficiency and significant effects.