Research on LED Liquid Cooling Design and Its Miniaturization Control System

In order to solve the problems of high heat flux density and uneven heat dissipation of high-power LED, three topological cold plates of imitation sisal, cobweb and square DC channels are designed in this paper. The heat dissipation performance of the three structures are analyzed by thermal simulation. It is found that the sisal-like runner cold plate has the best heat dissipation performance and the lowest pressure drop. The experimental test verifies that the sisal-like structure has good temperature uniformity. At the same time, in order to monitor the heat dissipation conditions of heat sources such as high-power LED in real time, a miniaturized monitoring system has been developed. This system optimizes the heat dissipation of the LED by adjusting the speed of the water pump and fan real-time. The miniaturization and intelligence of the control system are realized and the law is obtained that the heat dissipation effect of the cold plate increases with the increase of the speed of water pump, which has high practical value.