BATTERY PACK, VEHICLE AND ENERGY STORAGE DEVICE

A battery pack, a vehicle and an energy storage device. The battery pack includes at least one battery sequence. The battery sequence includes a plurality of batteries. At least one of the batteries includes a casing and a core packaged in the casing. A gap exists between two neighboring batteries. A ratio of the gap to the thickness of the battery is c, and c satisfies the following relational expression: (a−b)