| 大功率LED灯珠与散热器直焊结构散热效果分析 |
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| 引用本文： | 柴伟伟,陈清华,李琳红,唐文勇,张学清,贺志强.大功率LED灯珠与散热器直焊结构散热效果分析[J].发光学报,2011,32(11):1171-1175. |
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| 作者姓名： | 柴伟伟 陈清华 李琳红 唐文勇 张学清 贺志强 |
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| 作者单位： | 重庆大学 动力工程学院, 重庆 400030 |
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| 基金项目： | 国家自然科学基金(50276073)资助项目 |
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| 摘 要： | 散热是制约大功率LED发展的瓶颈,为了更好地解决散热问题,采用新型冷喷涂技术,在铝合金散热器表面喷涂铜层,实现了LED灯珠与散热器的直焊,取代了目前使用导热硅胶等热界面材料压接的方式,有效地消除了压接产生的接触热阻,显著改善了散热效果。通过建立LED灯具的三维模型,采用CAE软件模拟和实验两种方法验证了LED灯具直焊结构的散热效果明显优于压接结构,并且随着LED输入功率的增大,直焊结构的散热优势更加显著。
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| 关 键 词： | 冷喷涂 大功率LED 散热 |
| 收稿时间： | 2011-06-29 |
Heat Dissipation Analysis of High Power LED Connected to Copper Coated Heat Sink by Soldering |
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| CHAI Wei-wei,CHEN Qing-hua,LI Ling-hong,TANG Wen-yong,ZHANG Xue-qing,HE Zhi-qiang.Heat Dissipation Analysis of High Power LED Connected to Copper Coated Heat Sink by Soldering[J].Chinese Journal of Luminescence,2011,32(11):1171-1175. |
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| Authors: | CHAI Wei-wei CHEN Qing-hua LI Ling-hong TANG Wen-yong ZHANG Xue-qing HE Zhi-qiang |
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| Institution: | College of Power Engineering, Chongqing University, Chongqing 400030, China |
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| Abstract: | Heat dissipation of high-power LED is the main bottleneck for its application.In order to better solve the heat dissipation problem,a new cold spray technology is applied to deposit thin copper coating which can make the soldering of LED head with heat sink possible,and this can significantly extend the durability of high-power LED lamp when comparing with current high-power LED lamp using crimped connection with thermal interface material,also can decrease the thermal contact resistance.Better heat dissipa... |
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| Keywords: | Cold spray high-power LED heat dissipation |
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