Battery pack shell, battery pack and vehicle

The utility model discloses a battery pack shell, a battery pack and a vehicle, the battery pack shell comprises a shell body and a temperature adjusting layer, the shell body comprises an outer shell and an inner shell, the inner shell is of a heat conduction structure, and at least the inner wall of the inner shell is of an insulation structure; the temperature adjusting layer is used for adjusting the temperature of the battery, the temperature adjusting layer is arranged between the inner shell and the outer shell, and the heat conductivity coefficient of the outer shell is smaller than that of the inner shell. According to the battery pack shell disclosed by the embodiment of the utility model, the battery pack shell comprises the shell body and the temperature adjusting layer, the shell body is arranged into an inner-outer two-layer structure comprising the inner shell and the outer shell, the temperature adjusting layer is positioned between the outer shell and the inner shell of the shell body, and th