Provided is a cell module. The cell module comprises a frame, at least one first cell array, at least one second cell array, at least one heat dissipation structure slot and at least one modular heat dissipation structure. The first cell array is arranged in the frame and comprises a plurality of first cells which are arranged along a first direction roughly. The second cell array is arranged in the frame and comprises a plurality of second cells which are arranged along the above first direction roughly. The heat dissipation structure slot is arranged between the first cell array and the second cell array. The modular heat dissipation structure is inserted in the heat dissipation structure slot and in thermal contact with the first cells and the second cells. The modular heat dissipation structure can be in various and different states according to heat dissipation requirements. A heat dissipation structure is directly arranged in the cell module and the cell module can carries out heat dissipation mechanisms such as heat accumulation or heat conduction and the like to cells directly.