Photovoltaic assembly and preparation method thereof

A technology of photovoltaic components and components, which is applied in the field of solar energy, can solve the problems of rising temperature of photovoltaic components, shortening life of photovoltaic components, and reducing service life, and achieves the effects of lower operating temperature, simple structure and low cost

Inactive Publication Date: 2011-04-06
CSI SOLAR POWER GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Photovoltaic modules under the sun will convert most of the light energy into heat energy while converting light energy into electrical energy, which will greatly increase the temperature of photovoltaic modules; while the temperature of solar cells rises by 1 degree, the output power will decrease. will be reduced by about 0.4%, so at high temperature, the energy loss of the component is very serious
At the same time, the life of solar cells that have been in a high temperature state for a long time will be correspondingly reduced, thereby shortening the life of photovoltaic modules.

Method used

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  • Photovoltaic assembly and preparation method thereof
  • Photovoltaic assembly and preparation method thereof
  • Photovoltaic assembly and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] see figure 1 As shown, a photovoltaic module includes a frame 1 and a glass top plate 2 arranged in the frame, a cell sheet 3 and a back plate 4. The back plate 4 is provided with a high infrared emissivity layer 5, and the high infrared emissivity Layers can be produced by coating.

[0024] The high infrared emissivity layer is a high infrared emissivity coating or a high infrared emissivity film layer. The coating or film layer is made from the following raw materials: Mn 2 o 3 , NiO, Gr 2 o 3 , Fe 2 o 3 , CoO, CuO, Al 2 o 3 .

[0025] Tests show that the emissivity of the high infrared emissivity layer is about 80% at 25°C and close to 90% at 50°C.

Embodiment 2

[0030] see Figure 2~3 As shown, a photovoltaic module includes a frame 1 and a glass top plate 2, a battery sheet 3 and a back plate 4 arranged in the frame,

[0031] The backboard includes an outer PVF layer, a polyester film layer, and an inner PVF layer, and the outer PVF layer contains infrared radiation materials to form the high infrared radiation rate structure.

[0032] The working principle of the present invention is: the backplane is made into a high-infrared emissivity backplane, and its area and position should cover the area of ​​the front solar cell group, thereby increasing the heat transfer of the module to the surrounding environment through radiation, reducing the operating temperature of the module, and then Reduce the output loss of components due to temperature rise, and at the same time prolong the service life of components; Radiative materials are fabricated with maximum emissivity over the component operating temperature range.

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Abstract

The invention discloses a photovoltaic assembly and a preparation method thereof. A high infrared radiance structure containing infrared radiation materials is arranged on the back of the photovoltaic assembly. According to the invention, the heat transferred to a surrounding environment by the photovoltaic assembly through radiation is enlarged, and the operating temperature of the photovoltaic assembly is reduced, therefore, the output loss brought about by the temperature increase of the photovoltaic assembly is reduced; in addition, the service life of the photovoltaic assembly can be prolonged and realistic positive significance is obtained.

Description

technical field [0001] The invention relates to a photovoltaic module and a preparation method thereof, belonging to the field of solar energy. Background technique [0002] At present, the continuous use of conventional energy has brought about a series of economic and social problems such as energy shortage and environmental degradation, and the development of photovoltaic modules is one of the ways to solve the above problems. Therefore, all countries in the world are actively developing photovoltaic modules, and high conversion efficiency and low cost are the main trends in the development of photovoltaic modules and the goals pursued by technology researchers. [0003] Existing photovoltaic modules mainly include a frame and a glass top plate, battery sheet and back plate arranged in the frame; its working principle is to convert sunlight energy into electrical energy through the photoelectric effect. Photovoltaic modules under the sun will convert most of the light en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/052H01L31/18H01L31/049
CPCY02E10/50Y02P70/50
Inventor 闫广川
Owner CSI SOLAR POWER GROUP CO LTD
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