大功率LED照明系统的热管理设计

摘要

Due to the huge amount of heat generated during the high power LED working, it makes the thermal management of high power LED lighting system a very important issue to be settled. In this paper, the applications of three heat transfer mode: thermal conduction, thermal convection and thermal radiation were analyzed for high power LED lighting system; the optimizations were given out for the three modes, respectively.%由于大功率LED工作时所产生的大量热量,使得大功率LED照明系统中的热管理成为一个非常重要的议题.文中分析了在大功率LED照明系统中热传导、热对流和热辐射这3种热传递方式的应用,并分别提出了优化的方案.对于大功率LED照明系统的热管理设计,我们提出要系统考虑热通路的每个环节,通过分配温度梯度预算来选取适当的方案,以达到良好的散热效果.