摘要
结温与热阻是大功率LED路灯的热特性的重要指标,温度对LED的性能产生严重的影响。基于正向电压法原理,建立了LED结温、热阻的测试装置,分析拟合了某公司80 W LED路灯的温度系数K,并对其结温和热阻进行了测量,分析了翅片温度分布及散热特性。研究结果为大功率LED路灯结构设计提供了重要参考。
Junction temperature and thermal resistance are two important indexes for thermal performance,temperature has a significant effect on the performance of high-power LED street lamp.Based on the forward voltage measurement principle,test device was designed,temperature coefficient of a real 80W street lamp of LED company was obtained by fitting,junction temperature and thermal resistance were measured,and temperature distribution and heat characteristics were acquired.Research results provide important references for designing structure of LED street lamp.
出处
《金属材料与冶金工程》
CAS
2012年第2期41-43,48,共4页
Metal Materials and Metallurgy Engineering
基金
中南大学研究生学位论文创新资助项目(2010ssxt185)
关键词
大功率LED
散热
结温
热阻
high-power LED
heat release
junction temperature
thermal resistance
