Heat dissipation device for automobile battery pack

The utility model relates to the technical field of battery heat dissipation, in particular to an automobile battery pack heat dissipation device which comprises a bottom plate, two long side plates are installed on the top of the bottom plate, two short side plates are installed between the two long side plates, and water cooling assemblies used for cooling an automobile battery pack are installed on the outer sides of the long side plates and the short side plates. The water cooling assembly comprises a plurality of first transverse pipes fixedly connected with the long side plates and a plurality of second transverse pipes fixedly connected with the short side plates, the two ends of the first transverse pipes and the two ends of the second transverse pipes are sealed, the two ends of the first transverse pipes communicate with a plurality of first butt joint pipes, and the two ends of the second transverse pipes communicate with a plurality of second butt joint pipes. A hose communicates between the first