替代100W白炽灯的新型12WLED球泡灯散热性能研究

发布时间：2018-07-01 15:59

本文选题：LED球泡灯 + 封装　；参考：《重庆大学》2014年硕士论文

【摘要】：LED光源由于其节能、环保和高寿命等诸多优点，正逐步取代白炽灯、荧光灯、高压气体放电灯等传统照明光源，将成为新一代绿色照明光源。然而，随着LED光源功率日益增大，散热问题尤为突出，成为了限制其发展的关键问题之一。本论文在分析LED封装结构和散热方法的基础上，改进了LED基板与散热器的传统压接方式，提出了一款基于冷喷涂技术的新型整体纯铝散热器的12WLED球泡灯，用以替代传统100W白炽灯；借助数值模拟和实验相结合的研究方法，对该球泡灯的散热性能进行了分析研究，提炼出了影响其散热的主要因素。 12WLED球泡灯的散热器由纯铝板裁剪和弯折而成。首先分析了传统COB封装的内部结构，利用ANSYS软件模拟分析得出覆铜层厚度是影响热阻大小的主要因素，提出了一种优于传统COB封装的基于冷喷涂直焊技术的新型去除铜基板的封装方式；进一步通过不同LED芯片阵列方式、散热器结构的比较分析和优化，寻求到了一种最优的尽可能满足多方面要求的散热器结构。利用EFD软件模拟新型散热器的温度场分布并通过实验验证其可靠性，分析其在额定工况下的散热性能，最终设计出一款完整的LED球泡灯。与现有LED球泡灯相比，不仅能够满足散热和发光要求、符合人们照明习惯，而且体积小、质量轻、成本低、易于加工，，为LED球泡灯的设计提供了一种新方法。
[Abstract]:Due to its advantages of energy saving, environmental protection and long life, LED light source is gradually replacing incandescent lamp, fluorescent lamp, high-voltage gas discharge lamp and other traditional lighting sources, which will become a new generation of green lighting source. However, with the increasing power of LED light source, the problem of heat dissipation is particularly prominent, which has become one of the key problems restricting the development of LED light source. Based on the analysis of LED packaging structure and heat dissipation method, the traditional pressing mode of LED substrate and radiator is improved in this paper. A new 12WLED bulb lamp based on cold spraying technology is proposed for the integrated pure aluminum radiator. It is used to replace the traditional 100W incandescent lamp, and the heat dissipation performance of the bulb lamp is analyzed by the method of numerical simulation and experiment. The radiator of 12WLED bulb lamp is made by cutting and bending of pure aluminum plate. Firstly, the internal structure of the traditional COB package is analyzed, and the results of ANSYS software simulation show that the thickness of copper coating is the main factor affecting the thermal resistance. In this paper, a new method of removing copper substrate is proposed, which is superior to traditional COB package, and the structure of radiator is compared and optimized by different LED chip array. A kind of optimal radiator structure is sought, which can satisfy various requirements as far as possible. The temperature field distribution of the new type radiator is simulated by EFD software and its reliability is verified by experiments. The heat dissipation performance under rated working condition is analyzed and a complete LED bulb lamp is designed. Compared with the existing LED bulb lamp, it can not only meet the requirements of heat dissipation and luminescence, but also meet the lighting habits of people. It is also small in volume, light in weight, low in cost and easy to process. It provides a new method for the design of LED bulb lamp.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM923.34

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