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A method for reducing junction temperature of LED light source based on genetic algorithm

A technology of LED light source and genetic algorithm, applied in the field of LED space lighting, can solve the problems of unpredictable junction temperature and work reliability, and achieve the effect of improving yield

Inactive Publication Date: 2018-01-23
CHINA UNIV OF GEOSCIENCES (WUHAN) +1
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Problems solved by technology

[0006] In order to solve the deficiencies of the existing technology, the present invention provides a method for reducing the junction temperature of LED light sources based on genetic algorithms, which can solve the problem that the existing design methods cannot predict the junction temperature of each LED after the light source is processed and formed in the design stage. work reliability issues

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  • A method for reducing junction temperature of LED light source based on genetic algorithm
  • A method for reducing junction temperature of LED light source based on genetic algorithm
  • A method for reducing junction temperature of LED light source based on genetic algorithm

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with drawings and embodiments.

[0038] The invention provides a method for reducing the junction temperature of an LED light source based on a genetic algorithm, comprising the following steps:

[0039] (1) Use the aerospace upgrade screening method to select M pieces of LED lamp beads to be selected that meet the aerospace upgrade screening criteria {L 1 ,...,L i ,...,L M}, where L i Indicates the i-th lamp bead, and the heating power of each LED lamp bead is known;

[0040] (2) The structure of the LED lamp bead is as follows: figure 2 As shown, including the lens 1 and the epitaxial layer 2, the heat generated by the PN junction 3 passes through the heat flow path 10 composed of the die-bonding layer 4, epoxy resin 5, solder 6, aluminum substrate 7, thermally conductive double-sided adhesive 8, and heat sink 9. Eventually conducted to the air environment. For each LED lamp bead, use the ther...

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Abstract

The present invention provides a method of lowering the temperature value of the LED light source based on genetic algorithms. First of all, select the Mida -elected LED lamp bead to determine the thermal heating and heating relationship of the PN to the PN to the aluminum substrate of each LED lamp bead.The distance of the LED array composed of n positions is selected from the elected LED lamp beads to be selected from the corresponding position of the LED array as a set of variables. For each group of variablesEnter fine -tuning, select the minimum value of the maximum temperature value value after each step, and use the selected M LED lamp beads and its installation location to be selected as the best solution to install the light source.The method of this invention can predict the temperature stability of the light source and the advantages of working life when designing. It is especially suitable for the design of the LED light source for the space source of the space, which can greatly improve the product's qualification rate.

Description

technical field [0001] The invention relates to a method for reducing the junction temperature value of an LED light source based on a genetic algorithm, belonging to the field of LED space lighting. Background technique [0002] Due to the particularity of aerospace applications, high-power LED light sources for aerospace are required to have high stability and long working life. [0003] At present, in the design process of high-power LED light sources, the lamp beads generally adopt the design method of equal spacing. The junction temperature rise during operation is much higher than the junction temperature rise of LED lamp beads in a place with a good heat dissipation environment. Moreover, the junction temperature of each LED lamp bead during actual work directly affects the working reliability and working life of the LED light source composed of LED lamp beads. [0004] After the LED light source is processed, the detection of the LED junction temperature can evalua...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 张晶晶张涛袁士东
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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