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浙江大学学报(工学版)
土木工程     
基于电流体动力学的LED前照灯散热
李小华,包伟伟,王静,李慧霞,蔡忆昔
江苏大学 汽车与交通工程学院,江苏 镇江 212013
Heat dissipation of LED headlamps based on corona discharge
LI Xiao hua, BAO Wei wei, WANG Jing, LI Hui xia, CAI Yi xi
School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
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摘要:

针对现有散热方式的不足,提出基于电流体动力学(EHD)原理的散热方案,利用放电产生的离子风对LED前照灯进行热管理.对4种针电极排布形式和4种放电间距的降温性能进行试验测试,测试了散热系统在25~75 ℃环境温度下的散热效果.研究结果表明:当放电功率为1.5 W时,采用1×11针状电极布置、10 mm的放电间距,LED的散热效果最佳|当环境温度为80 ℃时,芯片引脚温度为104.8 ℃,可以满足LED前照灯的使用要求.利用EHD散热系统可以实现与压电式风扇接近的散热效果,系统热阻从3.83 ℃/W降为1.9 ℃/W.

Abstract:

A thermal managing method based on electro hydrodynamic (EHD) theory was presented aiming at the shortages of current cooling methods of LEDs. The method utilized corona wind reduced by discharging to refrigerate LED headlamps. The cooling performances were tested at 4 electrode arrays and 4 discharging gaps, as well as the cooling efficiency at the ambient temperatures from 25 ℃ to 75 ℃. Results showed that optimal refrigerating performance was achieved by 1x11 needlearray at 10 mm discharging gaps, while the ionic power was 1.5 W. A 104.8 ℃ junction temperature was acquired at 80℃ ambient temperature, which definitely complied with the applying regulations. The overall thermal resistance was reduced from 3.83 ℃/W to 1.9 ℃/W by the EHD cooling system, achieving a comparative cooling performance corresponding to the piezo fan.

出版日期: 2016-07-23
:  TP 61  
基金资助:

江苏省动力机械清洁能源与应用重点实验室开放课题资助项目(QK12001);江苏大学高级人才科研启动基金资助项目(5503000025).

作者简介: 李小华(1971-),男,副教授, 从事强化传热以及流动与传热的研究.ORCID:0000-0001-5577-3789. E-mail:lixiaohuaujs@126.com
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引用本文:

李小华,包伟伟,王静,李慧霞,蔡忆昔. 基于电流体动力学的LED前照灯散热[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.07.009.

LI Xiao hua, BAO Wei wei, WANG Jing, LI Hui xia, CAI Yi xi. Heat dissipation of LED headlamps based on corona discharge. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.07.009.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.07.009        http://www.zjujournals.com/eng/CN/Y2016/V50/I7/1284

[1] STEELE R V. LED automotive headlamps move close to market [J]. Laser Focus World, 2005, 41(11): 91-95.
[2] LONG X M, HE J G, ZHOU J, et al. A review on lightemitting diode based automotive headlamps [J]. Renewable and Sustainable Energy Reviews, 2015, 41(C): 2941.
[3] 周青超,柏泽龙,鲁路,等. 白光LED远程荧光粉技术研究进展与展望[J]. 中国光学,2015, 8(3): 313-328.
ZHOU Qingchao, BAI Zelong, LU Lu, et al. Remote phosphor technology for white LED applications: advances and prospects [J]. Chinese Optics, 2015, 8(3): 313-328.
[4] 胡长奇,张方辉,张静. 新型白光LED的光谱特性和相关结温特性[J]. 发光学报,2012, 33(9): 939-943.
HU Changqi, ZHANG Fanghui, ZHANG Jing. The spectral and junction temperature properties of new wihte light LED [J]. Chinese Journal of Luminescence,2012, 33(9): 939-943.
[5] 杨连乔,付美娟,魏斌,等.有机发光二极管的热分析与热设计[J]. 发光学报,2012, 33(6): 624-627.
YANG Lianqiao, FU Meijuan, WEI Bin, et al. Thermal analysis and themal design of organic lightemiting diode [J]. Chinese Journal of Luminescence, 2012, 33(6): 624-627.
[6] WANG J,CAI Y X,ZHAO X J, et al. Thermal design and simulation of automotive headlamps using white LEDs [J]. Micoelectronics Journal, 2014, 45(2): 249-255.
[7] WANG J, CAI Y X, LI X H, et al. Design of automotive headlamp with highpower LEDs [J]. International Joural of Automotive Technology, 2014, 15(4): 673-681.
[8] 赵新杰,蔡忆昔,王静,等. 基于半导体制冷技术的LED前照灯散热器设计与优化[J]. 发光学报, 2014, 35(10): 1269-1275.
ZHAO Xinjie, CAI Yixi, WANG Jing, et al. Thermal model design and optimize of LED headlamp cooling device based on semiconductor refrigeration [J]. Chinese Journal of Luminescence, 2014, 35(10): 1269-1275.
[9] 田大垒,关荣锋,王杏,等. 基于热电制冷的大功率LED散热性能分析[J]. 电子与封装, 2009, 9(1): 35-37.
TIAN Dalei, GUAN Rongfeng, WANG Xing, et al. Heat dissipation analysis of high power LED on thermoelectric cooler [J]. Electronics and Packaging, 2009, 9(1): 35-37.
[10] LUO X B, HU R, GUO T H, et al. Low thermal resistance LED light source with vapor chamber coupled fin heat sink [C]∥60th Electronic Components and Technology Conference. Las Vegas: IEEE, 2010: 1347-1352.
[11] 徐学基,诸定昌.气体放电物理[M].上海:复旦大学出版社,1996:248-267.
[12] 罗惕乾.流体力学[M].3版.北京:机械工业出版社,2007:158-164.
[13] ALLEN P H G, KARAYIANNIS T G. Electrohydrodynamic enhancement of heat transfer and fluid flow [J]. Heat Recovery Systems and CHP, 1995, 15(5): 389-423.
[14] SADEK H, ROBINSON A J, COTTON J S, et al. Electrohydrodynamic enhancement of intube convective condensation heat transfer [J]. International Journal of Heat and Mass Transfer, 2006, 49(9/10): 1647-1657.
[15]LUXEON Altilon product datasheet.[20150401].http:∥www.philipslumileds.cn.com/uploads/40/DS66_CNSpdf. 
[16] GB259912010,汽车用LED前照灯[S].北京:中国标准出版社,2011:45.
[17] 于新刚.GaN基功率型LED器件及汽车前照灯散热研究[D].北京:清华大学,2008: 1021.
YU Xingang. Study on GaNBased HB LED and thermal management for LED automotive headlamp [D]. Beijing: Tsinghua University, 2008: 1021.
[18] OWSENEK B L, SEYEDYAGOOBI J, PAGE R H. Experimental investigation of corona wind heat transfer enhancement with a heated horizonal flat plate [J]. Journal of Heat Transfer, 1998, l(117): 309-315.
[19] HUANG R T, SHEU W J, WANG C C. Heat transfer enhancement by needlearrayed electrodesan EHD integrated cooling system [J]. Energy Conversion and Management, 2009, 50(7): 1789-1796.
[20] CHEN T, LUO X B, HUANG S Y, et al. Thermal analysis and optimization of multiple LED packaging based on a general analytical solution [J]. International Journal of Thermal Science, 2010, 49(1): 196-201.

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