Through actual applications, the high -power LED street lights have the advantages of energy saving, environmental protection, long life, brightness color temperature, high -performance, and high performance. With the maturity of LED technology and the continuous improvement of efficiency, LED solid -state lighting is a trend and a **** solution for energy saving. The energy -saving characteristics of the LED street lighting system are mainly determined by the LED chip and power supply. However, the LED chip and power module are integrated together. Generally, the space is small, the heat dissipation is poor, and the LED chip and the power supply are heating, making the ambient temperature higher. Therefore, this article reduces the ambient temperature by improving the heat dissipation conditions of the LED street light system, improving the lighting efficiency of LED and the efficiency of the power supply, and matching the life of LED power with the LED chip to achieve true energy saving, environmental protection, and long life.

Let ’s talk about the main three aspects of research content:

1. Experimental research on high -power LED street light thermal power relationship. Taking the high -power LED street lights that are serialized and connected as the object, the relationship between the power distribution and the temperature distribution under the experimental study of the two power supply methods: constant current and constant voltage power supply. Establish the LED street light thermal power relations research experimental platform to analyze the results of the experiment. It is learned from the results that under the conditions of constant current, there is a significant linear relationship with the forward voltage of LED knot temperature, which verify the voltage drop characteristics of LEDs, and can try to measure the knot temperature of LED with large current, which is different from traditional small current measurement measurement. Essence Compared with the constant voltage driver, the total output power of the power supply is relatively stable. However, between the multi -way LED, due to the uneven temperature distribution, the corresponding power distribution is mutually contacted. Form a vicious circle. Therefore, the cooling balance design is of great significance to improve the overall quality of high -power LED street lights.

2. Optimized design of high -power LED street light radiator. Taking a 150W high -power LED street light as a research object, the heating network model is established, and the theoretical design meets the heat dissipation requirements of the heat dissipation requirements. On this basis, it is optimized to use the ICEPAK thermal analysis software. Verify the rationality of the existing radiator design, and the theoretical calculation results are compared with the optimization results, which shows that in the design of the radiator, theoretical calculation is a relatively important part. Combining software optimization can reduce R & D costs, shorten the R & D cycle, and improve R & D efficiency.

3. Datoming design of high -power LED street light power module. On the basis of designing the high -power LED power supply circuit, analyze its heat flow path and related thermal resistance, with the shortest heat flow path as the goal, and design the two kinds of power dissipation devices from the structural structure. For a small space for power heat dissipation, try tiny heat pipes for the LED power module to dissipate heat. The results show that both schemes can meet the requirements of electronic equipment thermal design requirements, and the heat dissipation performance of the use of tiny heat pipes has improved by about 5 ° C.