车辆检测设备散热设计与仿真分析

Heat Dissipation Design and Simulation Analysis of Vehicle Detection Equipment

为了保证高功耗车辆检测设备在高温环境下的工作性能,使用热仿真软件,研究均温板、翅片和界面导热材料等散热结构对车辆检测设备散热性能的影响,并基于仿真结果对设备的散热结构进行优化;制作样机后,在高温箱里进行样机试验,并将试验结果与仿真结果进行对比。结果显示:均温板具有超高的导热系数,可以降低扩散热阻,有利于降低芯片温度;增高机箱翅片的高度可使降温效果极为明显;调整翅片间距和厚度、增加基座的厚度以及选取厚度合适、导热系数高的硅胶垫片等措施均能一定程度上提高设备的散热能力。这些散热措施有效保证了设备的稳定运行,为类似产品的设计提供了指导。

In order to ensure the working performance of high-power vehicle detection equipment in high-temperature environments,thermal simulation software is used to study the impact of heat dissipation structures such as vapor chamber,case fins,and interface thermal conductive materials on the heat dissipation performance of the vehicle detection equipment.Based on the simulation results,the heat dissipation structure of the equipment is optimized.After making a prototype,the prototype test is performed in the high temperature box,and the test results are compared with the simulation results.The results show that the vapor chamber can reduce diffusion thermal resistance due to its ultra-high thermal conductivity,which is beneficial for reducing chip temperature;increasing the height of the case fins has a very significant cooling effect;measures such as adjusting the spacing and thickness of fins,increasing the thickness of the base,and selecting silicone gaskets with appropriate thickness and high thermal conductivity can all improve the heat[JP+2]dissipation capacity of the equipment to a certain extent.These heat dissipation methods effectively ensure the stable operation of the equipment,and provide guidance for design of the similar products.