Heat dissipation structure of battery pack and battery module

The heat dissipation structure of the battery pack comprises the battery pack, a heat conduction layer and a heat conduction shell, the inner side face of the heat conduction shell corresponds to the shape of the outer side of the battery pack, the heat conduction shell is arranged on the outer side of the battery pack in a sleeved mode, and the heat conduction layer is arranged between the heat conduction shell and the battery pack. Each battery unit of the battery pack, the heat conduction layer and the heat conduction shell are tightly attached in sequence, so that heat generated by the battery pack can be transmitted to the heat conduction shell through the heat conduction layer, on one hand, the heat of the battery pack is dissipated outwards through the heat conduction shell, and on the other hand, the heat conduction shell carries out balanced adjustment on the temperature of each battery unit; therefore, the effects of heat balance and heat dissipation of each battery are achieved. 本实用新型公开了一种电池组的散热结构和