Self-cleaning low-radiation Fresnel lens manufacturing method and concentration photovoltaic system based on self-cleaning low-radiation Fresnel lens

The technology of a Fresnel lens and its manufacturing method, which is applied in the field of solar energy utilization, can solve the problems of high battery sheet temperature, achieve the effects of reducing maintenance costs, benefiting photoelectric conversion efficiency, and reducing maintenance costs

Inactive Publication Date: 2011-09-07
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The invention solves the problem of excessive temperature of cells in the concentrated photovoltaic system by assembling a concentrated photovoltaic system based on a self-cleaning low-radiation Fresnel lens, and the self-cleaning function of the system can reduce system maintenance costs

Method used

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  • Self-cleaning low-radiation Fresnel lens manufacturing method and concentration photovoltaic system based on self-cleaning low-radiation Fresnel lens
  • Self-cleaning low-radiation Fresnel lens manufacturing method and concentration photovoltaic system based on self-cleaning low-radiation Fresnel lens
  • Self-cleaning low-radiation Fresnel lens manufacturing method and concentration photovoltaic system based on self-cleaning low-radiation Fresnel lens

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Experimental program
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Effect test

Embodiment 1

[0036] Preparation method of self-cleaning LOW-E glass:

[0037] (1) The low-e film surfaces of two pieces of LOW-E glass are relatively placed, and the surroundings of the two relatively placed LOW-E glasses are sealed with paraffin to protect the low-e film surfaces, and obtain module 1;

[0038] (2) Put the module I into the titanium sol and pull it at a speed of 1-30cm / min;

[0039] (3) remove the paraffin of the module 1 that titanium sol has been processed;

[0040] (4) Calcining the Low-E glass treated with the above-mentioned titanium sol at 450° C. for 45 minutes, and cooling to obtain the self-cleaning Low-E glass. The composition of the titanium sol is tetrabutyl titanate:ethanol:water:nitric acid:acetylacetone=0.9:17:2:0.3:0.6. The configuration of titanium sol can be carried out at room temperature.

[0041] The fabrication method of self-cleaning low-emissivity Fresnel lens is as follows:

[0042] (1) Adding transparent optical silica gel to the forming mold ...

Embodiment 2

[0048] Assembly of a 500x Concentrating Photovoltaic System Based on a Self-Cleaning Low-E Fresnel Lens

[0049] The structural diagram of the concentrated photovoltaic system is shown in figure 2 , the structural diagram of the internal components of the aluminum alloy box is shown in image 3 . Concentrating photovoltaic system includes: self-cleaning low-radiation Fresnel lens 1-4, secondary uniform light prism 5, gallium arsenide cell 6, aluminum alloy box 7, tracking system 8, charge and discharge controller 9, battery pack 10. AC load 11, inverter 12 and DC load 13; the entire aluminum alloy box 7 is fixedly connected to the tracking system 8, the two ends of the aluminum alloy box 7 form a connection circuit with the DC load 13, and the AC load 11 and the inverter After the inverter 12 is connected in sequence, the charge-discharge controller 9 and the storage battery pack 10 are connected in sequence, respectively, and the DC load 12 are connected to the above-menti...

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Abstract

The invention discloses a concentrating photovoltaic system based on a self-cleaning and low radiation fresnel lens, wherein a box body made of aluminum alloy is designed and processed. The bottom of the box body is punched for fixing a gallium arsenide solar cell. A secondary dodging prism is stuck onto the upper part of the gallium arsenide cell. On the premise that no optical loss exists, the prism unifies the light intensity of focal spots of the fresnel lens as much as possible. Finally, the self-cleaning and low radiation fresnel lens is arranged at the upper part of the box body made of aluminum alloy and is sealed, so as to prevent rain water or dusts from entering the interior of the box body. The assembled box body made of aluminum alloy is fixed on the platform of a tracking system. One part of generated electric energy is supplied to a DC load or is supplied to an AC load via an inverter. The surplus electric energy is stored in a storage battery group through a charging and discharging controller.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, in particular to a concentrating photovoltaic system based on a self-cleaning low-radiation Fresnel lens. Background technique [0002] The development of new energy and renewable clean energy is a common task faced by the whole world. In the development and utilization of new energy, solar cells, such as: silicon, copper indium gallium selenide, cadmium telluride, gallium arsenide and other solar cells, have attracted much attention. However, due to the high cost of the above-mentioned solar cells, they have not yet fully entered the market. In order to further reduce the cost of photovoltaic power generation, concentrating technology is a feasible measure, that is, by using an inexpensive concentrating system to concentrate sunlight to a small area of ​​high-performance photovoltaic cells, thereby greatly reducing the costly energy in the system. Amount of solar cells. It is...

Claims

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Application Information

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IPC IPC(8): G02B3/08G02B19/00C03C27/00H01L31/052H02S40/22
CPCY02E10/52Y02E10/50
Inventor 史继富徐刚朱艳青黄华凛苗蕾
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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