Heat exchange plate, battery pack and electric working machine

The utility model relates to the technical field of mobile energy storage equipment, and provides a heat exchange plate, a battery pack and an electric operation machine. The heat exchange plate comprises a bottom plate, an outer edge, a drainage part and a plurality of turbulent flow parts are formed on the bottom plate, two independent flow channels are formed between the outer edge and the drainage part, and a flow inlet and a flow outlet are formed in the outer edge; wherein the turbulent flow part is arranged in the flow channel, and in the drainage direction of the flow channel, the transverse width of the upstream side end of the turbulent flow part is larger than that of the downstream side end of the turbulent flow part; and the cover plate is detachably connected with the outer edge. According to the heat exchange plate, the drainage parts are arranged on the bottom plate, so that two independent flow channels can be formed, and the heat exchange plate has high heat exchange efficiency. The multiple