Battery module

The battery module comprises a battery pack module, a protective shell and a plurality of heat dissipation rods, a plurality of heat dissipation channels for mounting heat dissipation rods are arranged in the middle of the battery pack; the protective shell comprises a shell body and two cover bodies, the shell body is provided with a containing cavity for containing the battery pack, the containing cavity opens the two ends of the shell body in the length direction of the shell body, each cover body covers one opening of the shell body, and the side, close to the shell body, of each cover body protrudes to form a plurality of bases for fixing the heat dissipation rods; each heat dissipation rod is in a hollow column shape and is provided with a phase change material used for heat dissipation, and the two ends of each heat dissipation rod extend out of the corresponding heat dissipation channels and then are connected with the corresponding base of the corresponding cover body. The containing cavity is furthe