大功率LED散热器结构参数对散热的影响研究

Study on the Effect of Structural Parameters on Heat Dissipation in High-power LED Heat Sinks

为了研究大功率LED散热器的结构参数对散热的影响,利用ANSYS软件模拟仿真设计一款带有方形肋片散热器的大功率LED路灯模型,模拟研究了方形肋片散热器的底板厚度、肋片厚度、肋片高度及肋片间距四个结构参数对大功率LED散热器的影响作用,利用正交分析优化法挑选部分水平组合进行试验仿真,找出最优水平组合,得到各因素的影响规律。仿真结果显示,散热肋片的高度影响最大,肋片厚度影响最小。

In order to study the influence of structural parameters of high-power LED heat sink on heat dissipation,a high-power LED street light model with a square rib heat sink was designed by using ANSYS software simulation,and the effect of four structural parameters,namely,base plate thickness,rib thickness,rib height and rib spacing,on the high-power LED heat sink was studied by simulation.The optimal level combination was found by selecting some level combinations for experimental simulation,and the influence law of each factor was obtained.The simulation results show that the height of the heat sink ribs has the greatest influence and the thickness of the ribs has the least influence.