照明用大功率LED散热研究.pdfVIP

31 6 Vol. 3 1 N o. 6 2008 12 Chine se Jour n al Of Elect r on Dev ic es Dec. 2008 Thermal Analysis of Illumination High2Power LED 1, 2 1* 1 2 2 LI U Yan2chao , F UGui2cui , GAO Cheng , LI Xi2hui , WANG Shi2j ie 1. Dep artment of r oj ect System Engineering, Beihang Univer sity , Beij ing 100083, China; 2. Compound Crystal Technology Co. , Ltd . , Beij ing 100083, China Abstr act: High2power LED usu ally is in small size and b ig current most of t he input power convert ed into th ermal energy so heat dissipation is th e k ey technology to be solved. Th is p aper int roduces t he met hod of thermal design and modu le of th ermal resistance of H igh2power LED; and describes heat dissipat ion design for illuminat ion High2 power LED arrays. Th e results from the simulat ion and an alysis and th e assessment experiment had proved t hat the met hod and the radiat or design met t he deman d of heat dissipat ion of t he LED arrays. Key words: high2power LED ; h eat dissip ation design ; simu lat ion an alysis EEACC: 8 30; 4260D LED 1 2 1* 1 2 2 刘雁潮 付桂翠 高 成 李细辉 王史杰 1. 北京航空航天大学工程系统工程系 北京 1000 83 ; 2 . 北京中科镓英半导体有限公司 北京 1000 83 : 大功率LED 体积小、工作电流大 输入功率中大部分转化为热能 散热是需要解决的关键技术。文章介绍了大功率 LED 热设计的方法 针对大功率LED 的封装结构 建立了热传导模型; 对某照明用大功率 LED 阵列进行了散热设计 通过仿 真分析和热评估试验验证了所采用的散热方法和设计的散热器满足 LED 阵列的散热要求。 : 大功率 LED; 散热设计; 仿真分析 :TN36 :A : 100 29490( 2008)0621716204 在节能和环保两大需求的强力推动下 LED 的 发光芯片 实现情景照明。 应用己从早年的指示、显示和装饰逐步走向照明领