The Designing and Driving Technology of the Illumination Board of the High Power Bright White LED Street Lamp

BAI Lin; LIANG Hong-bao

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The Designing and Driving Technology of the Illumination Board of the High Power Bright White LED Street Lamp

paper | 更新时间：2020-08-12

- The Designing and Driving Technology of the Illumination Board of the High Power Bright White LED Street Lamp
- Chinese Journal of Luminescence Vol. 30, Issue 4, Pages: 487-494(2009)
- 作者机构：
  
  1. 中国石油大庆石化公司炼油厂,黑龙江大庆,163711
  2. 大庆石油学院计算机与信息技术学院, 黑龙江大庆 163318
  3. 大庆石油学院现代教育中心, 黑龙江大庆 163318
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN312.8
- Received：17 September 2008，
  
  Revised：1900-1-2，
  
  Published Online：30 August 2009，
  
  Published：30 August 2009
- 稿件说明：
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BAI Lin, LIANG Hong-bao. The Designing and Driving Technology of the Illumination Board of the High Power Bright White LED Street Lamp[J]. Chinese Journal of Luminescence, 2009, 30(4): 487-494.
DOI：

BAI Lin, LIANG Hong-bao. The Designing and Driving Technology of the Illumination Board of the High Power Bright White LED Street Lamp[J]. Chinese Journal of Luminescence, 2009, 30(4): 487-494. DOI：

摘要

为最大可能提高大功率LED路灯发光板的电光转化率与散热效率

在不影响外量子效率前提下对LED芯片设计采用扩大LED芯片面积

以及电极优化技术增加LED芯片的出光量

使芯片表面热流均匀分布

芯片工作更稳定。分析了大功率白光LED的封装过程对提高芯片取光率、保障白光质量、器件散热技术的综合应用。综合上述技术及有限元分析软件对大功率LED器件封装的热阻分析结果

确定了COB(chip on board)LED芯片的阵列组装技术

为制造LED路灯发光板的最佳技术方案。LED芯片结温很容易控制在120 ℃以下

与外部散热技术兼容性好。通过光线最佳归一化数学模型计算了LED芯片阵列芯片间最佳距离。最后通过对各种白光LED驱动方案的比较

确定了白光LED最佳驱动方案为恒电流驱动脉宽调制(PWM)调节亮度。

Abstract

For doing the best to improve the ratio of the transformation from electronic power to luminous energy and efficiency of heat dissipation for the luminous board of the high power bright white LED street lamp

the method to extend area of LED chip was adopted and don't decrease LED's external quantum efficiency when LED chip was designed and made. The technology of optimizing was adopted for increasing luminous quantity

and let LED chip's heat distribute on the LED chips surface averagely and make LED chip work in stable status. The integrated technology was analyzed to enhance efficiency of geting light and assure the quality of white bright emission by LED device and heat dissipation of LED device. The best technology

which was adopted to array matrix of LED chips of luminous board with high power bright white LED for street lamp

is COB (chip on board) technology

and according to the technology result

the thermal resistance of the packaging solution for high power bright white LED chip was analyzed by Finite Element Analysis Software.The technology of COB makes LED devices temperature easyly to be controlled below 120 ℃ when it is electrified

and it is easier for COB to compatible with external cooling devices. The optimum distance of the LED chips of the luminous board with high power bright white LED for street lamp was figured out by the formula to make bright to be best normalized. The best optimum driving scheme for high power white bright LED street lamp was defined

that LED street lamp must be drived by constant current and the brightness of the street lamp was regulated by the PWM technology at last.

关键词

Keywords

references

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