Engine residual heat power generation device and power generation module thereof

The invention discloses an engine residual heat power generation module which comprises a gas pipeline, a thermoelectric converter layer and a cooler layer, wherein an energy storage device layer is further arranged between the gas pipeline and the thermoelectric converter layer. The invention simultaneously discloses an engine residual heat power generation device, which at least comprises two stages of the engine residual heat power generation modules; and the gas pipelines, the thermoelectric converter layers and the cooler layers of the adjacent two stages of the engine residual heat power generation modules are communicated. The engine residual heat power generation module can absorb residual heat of exhaust gas and produce the temperature difference in the engine residual heat power generation module, and a thermoelectric converter can utilize the temperature difference for completing the power generation function. The use of the engine residual heat power generation module can improve the thermoelectric conversion efficiency of the thermoelectric converter, the use is convenient and the manufacture is simple.