Multi-focus light spot energy homogenizing Fresnel lens

A Fresnel lens, energy uniform technology, applied in the lens, optics, photovoltaic power generation and other directions, can solve the problems of increasing the internal consumption of solar cells, reducing the output capacity of solar cells, uneven irradiation of solar cells, etc. Improve quality, precision and easy-to-control effects

Active Publication Date: 2014-12-10
SI CHUAN ZHONG SHUN SOLAR ENERGY DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing Fresnel lens spot is uneven, so that the solar cell receives uneven irradiation, generates lateral current, increases the internal consumption of the solar cell, increases the temperature, and reduces the output capacity of the solar cell, while the unevenness of the irradiation The larger the , the larger the lateral current, and this adverse effect will be more serious

Method used

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  • Multi-focus light spot energy homogenizing Fresnel lens
  • Multi-focus light spot energy homogenizing Fresnel lens
  • Multi-focus light spot energy homogenizing Fresnel lens

Examples

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Effect test

Embodiment 1

[0032] The schematic diagram of the Fresnel lens 1 for multi-focus spot energy homogenization described in the present embodiment is as follows figure 1 shown. It is composed of four identical unit Fresnel lenses 2 (eg figure 2 shown) are spliced ​​together; the lens surface of the unit Fresnel lens 2 is engraved with concentric circular arcs from small to large, and the lens surface is pentagonal (shape is a square with missing corners), including the first side 3 , the second side 4 and the third side 5; the two end points of the second side 4 are connected with the first side 3 and the third side 5 respectively; the smallest concentric arc of the lens surface is a semicircle, and the second side The side 4 coincides completely with the chord of the semicircle; the first side 3 and the third side 5 are symmetrical about a straight line L which is perpendicular to the second side 4 and passes through the center of the concentric arc of the lens surface. The multi-focus spo...

Embodiment 2

[0039] The unit Fresnel lens 2 in the multi-focus spot energy homogenization Fresnel lens 1 described in the present embodiment is obtained by cutting from the semicircular Fresnel lens according to the following method:

[0040] (1) circular Fresnel lens (diameter is 300mm, and the diameter of its smallest concentric semicircle is 5mm) is equally divided into two semicircular Fresnel lenses 6 along the diameter of concentric circle;

[0041] (2) cut on step (1) gained semicircle Fresnel lens 6 and obtain a unit Fresnel lens 2, the side length of described unit Fresnel lens 2 and unit Fresnel lens 2 maximum concentric arcs The length ratio of the radius is 1:3; the lens surface of the unit Fresnel lens 2 is pentagonal, and its shape is a square with missing corners, including the first side 3, the second side 4 and the third side 5; Two endpoints of the second side 4 are connected with the first side 3 and the third side 5 respectively, the second side 4 is on the same straigh...

Embodiment 3

[0045] The unit Fresnel lens 2 in the multi-focus spot energy homogenization Fresnel lens 1 described in the present embodiment is obtained by cutting from the semicircular Fresnel lens according to the following method, specifically comprising the following steps:

[0046] (1) circular Fresnel lens (diameter is 300mm, and the diameter of its smallest concentric semicircle is 5mm) is equally divided into two semicircular Fresnel lenses 6 along the diameter of concentric circle;

[0047] (2) cut on step (1) gained semicircle Fresnel lens 6 and obtain a unit Fresnel lens 2, the side length of described unit Fresnel lens 2 and unit Fresnel lens 2 maximum concentric arcs The length ratio of the radius is 1:3; the lens surface of the unit Fresnel lens 2 is pentagonal, and its shape is a square with missing corners, including the first side 3, the second side 4 and the third side 5; Two endpoints of the second side 4 are connected with the first side 3 and the third side 5 respectiv...

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Abstract

The invention discloses a multi-focus light spot energy homogenizing Fresnel lens. As the multi-focus light spot energy homogenizing Fresnel lens is obtained through decomposing and recompounding the traditional Fresnel lenses, the unevenness of the light spot energy of the Fresnel lens is reduced greatly, the quality of the light spot can be improved greatly, the uniform irradiation can be received by a solar battery, the generated transverse current is less, the internal consumption of the solar battery is reduced and the output capability of the solar battery is improved.

Description

technical field [0001] The invention relates to a lens, in particular to a Fresnel lens for homogenizing multi-focus spot energy. Background technique [0002] Solar energy has excellent characteristics such as cleanness, no geographical limitation of resources, and inexhaustibility for human beings. It is more and more popular among people. Among them, the technology of solar photovoltaic utilization, that is, the direct conversion of sunlight into electrical energy through photovoltaic devices, is particularly eye-catching. [0003] At present, a complete concentrating photovoltaic power generation system mainly includes several parts such as concentrating solar cell modules, solar trackers, and electric energy storage or inverter equipment. As a photoelectric conversion component, the concentrating solar cell module is mainly composed of a transmissive or reflective concentrator and a circuit board installed with a photovoltaic cell chip. When in use, the condensing lens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/08H01L31/054
CPCY02E10/52
Inventor 黄忠黄饶帅麒罗敏
Owner SI CHUAN ZHONG SHUN SOLAR ENERGY DEV
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