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Factors Influencing the Temperature Distribution of 200 W Light Emitting Diode Module Used in the Spotlight

机译：影响聚光灯中使用的200 W发光二极管模块温度分布的因素

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摘要

The junction temperature of LED (light emitting diode) has a significant impact on its performance and lifetime. In this paper, a simplified model based on the finite element analysis is developed to simulate the temperature distribution of the 200 W LED module using software ANSYS. The model contains LED package, the heat pipe radiator, as well as TIM (thermal interface material) between the LED package and radiator. The temperature distribution of the simulation agrees with that of the experimental measurement. Thickness of TIM affects the heat dissipation significantly, the chips temperature and the maximum temperature difference of chips increases sharply with TIM thickness increasing. Substituting aluminum fins with copper fins cannot improve the heat dissipation performance of heat pipe radiator, and the air velocity of heat pipe radiator plays a key role in the heat dissipation. Thermal conductivity of package submount directly affects the chip temperature and the uniformity of temperature distribution of package submount.
机译：LED（发光二极管）的结温对其性能和寿命有重大影响。在本文中，基于有限元分析的简化模型被开发出来，以使用ANSYS软件模拟200 W LED模块的温度分布。该模型包含LED封装，热管散热器以及LED封装和散热器之间的TIM（热界面材料）。模拟的温度分布与实验测量的温度分布一致。 TIM的厚度会显着影响散热，随着TIM厚度的增加，切屑温度和最大切屑温度差会急剧增加。用铝翅片代替铝翅片不能提高散热片的散热性能，散热片的风速在散热中起关键作用。封装底座的导热性直接影响芯片温度和封装底座温度分布的均匀性。

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  • 来源
    《Heat Transfer Engineering》 |2018年第8期|493-498|共6页
  • 作者

    Jicheng Zhou; Xing Chen; Zhuang Zhou; Yinqiao Peng; Yunyun Wang; Jinhui Huang;

  • 作者单位

    School of Energy Science and Engineering, Central South University, Changsha, China;

    School of Energy Science and Engineering, Central South University, Changsha, China;

    School of Energy Science and Engineering, Central South University, Changsha, China;

    School of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang, China;

    School of Energy Science and Engineering, Central South University, Changsha, China;

    School of Energy Science and Engineering, Central South University, Changsha, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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