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A kind of compound eye type solar cell encapsulation glass and its preparation method and application

A technology for solar cells and encapsulating glass, applied in the field of solar cells, can solve the problems of ineffective utilization of oblique sunlight and weak sunlight, poor response to weak light of silicon solar cells, and unsuitability for large-scale industrialization, etc. Improve the effects of poor weak light response, simplified structure, and compatibility with conventional processes

Active Publication Date: 2020-05-12
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such photovoltaic power plants have a common disadvantage: cloudy weather, morning or evening light is very weak, oblique light reflected on the surface of the battery is very large, resulting in loss of light energy, and the weak light response of silicon solar cells is very poor
At present, preparing suede and coating anti-reflection film are all effective measures to reduce the loss of light energy, but they have little effect on the effective use of oblique sunlight and weak sunlight.
[0003] The present invention provides a solar cell encapsulation glass with a compound eye array on the surface, which can greatly improve this situation; in US20090266415A1, a compound eye similar structure is also mentioned, but its size is in the order of microns, which mainly plays an anti-reflection role. The all-round spherical concentrator mentioned in CN101355327A is also a structure designed to solve the problem of oblique sunlight, but its structure is too complicated and not suitable for large-scale industrialization

Method used

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  • A kind of compound eye type solar cell encapsulation glass and its preparation method and application
  • A kind of compound eye type solar cell encapsulation glass and its preparation method and application
  • A kind of compound eye type solar cell encapsulation glass and its preparation method and application

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Effect test

Embodiment 1

[0033] The preparation method of the compound eye type solar cell encapsulation glass of the present embodiment is as follows:

[0034] (1) with silicon dioxide (SiO 2 ), calcium carbonate (CaCO 3 ), sodium carbonate (Na 2 CO 3 ) as raw material, weighed according to the molar ratio of 6:1:1, placed in a mortar, ground to a particle size of 20 mesh, and mixed evenly, the impurity Fe in the raw material 2 o 3 The mole percentage is less than 0.005%.

[0035] (2) The mixed raw materials were melted in a muffle furnace at 1400°C for 6h.

[0036] (3) Pre-prepared iron molds were preheated to 400°C, poured molten glass into the molds for quenching and forming, and then placed in a muffle furnace at 500°C for annealing for 2 hours.

[0037] refer to figure 1 , the surface of the solar cell encapsulating glass 1 has a compound eye array composed of several convex lenses 11 . Specifically, refer to figure 2 , the compound eye array is formed by a matrix arrangement of severa...

Embodiment 2

[0042] The preparation method of the compound eye type solar cell encapsulation glass of the present embodiment is as follows:

[0043] (1) with silicon dioxide (SiO 2 ), calcium carbonate (CaCO 3 ), sodium carbonate (Na 2 CO 3 ) as raw material, weighed according to the molar ratio of 4:3:3, put it in a mortar and grind until the particle size is 10 mesh, and then mix evenly, the impurity Fe in the raw material 2 o 3 The mole percentage is less than 0.005%.

[0044] (2) Melt the mixed raw materials in a muffle furnace at 1500°C for 8 hours.

[0045] (3) Pre-prepared iron molds were preheated to 400°C, poured molten glass into the molds for quenching and forming, and then placed in a muffle furnace at 500°C for annealing for 2 hours.

[0046] refer to Figure 6 , the surface of the solar cell encapsulating glass 2 has a compound eye array composed of several convex lenses 21 . Specifically, the compound eye array is formed by a matrix arrangement of several rows of con...

Embodiment 3

[0049] The preparation method of the single convex lens solar cell encapsulation glass of the present embodiment is as follows:

[0050] (1) with silicon dioxide (SiO2 ), calcium carbonate (CaCO 3 ), sodium carbonate (Na 2 CO 3 ) as raw material, weighed according to the molar ratio of 4:3:3, put it in a mortar and grind until the particle size is 10 mesh, and then mix evenly, the impurity Fe in the raw material 2 o 3 The mole percentage is less than 0.005%.

[0051] (2) The mixed raw materials were melted in a muffle furnace at 1450°C for 7 hours.

[0052] (3) A pre-prepared iron mold is preheated to 300°C, the molten glass is poured into the mold to be quenched and formed, and then placed in a muffle furnace at 500°C for 3h annealing.

[0053] refer to Figure 8 , the obtained solar cell encapsulation glass has a single convex lens structure. The single convex lens photovoltaic glass has a chord-to-height ratio of 5 and a height of 0.5 cm. When testing silicon solar ...

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Abstract

The invention discloses compound eye type solar cell package glass and a preparation method thereof. The preparation method comprises the steps of mixing raw materials of SiO2, CaO and Na2O according to a certain proportion; melting in high temperature; forming in a specific mould; then annealing to prepare photovoltaic glass, wherein a compound eye type array is arranged on the surface of the photovoltaic glass, and the photovoltaic glass is used for packaging solar cells. On one hand, light at the edges of cells can be extra gathered to the cells; on the other hand, an incidence angle of oblique light is reduced, and the amount of incident light is increased; thus, the photoelectric conversion efficiency of the solar cells is improved. The compound eye type solar cell package glass disclosed by the invention has simple preparation technology and low cost. Compared with existing traditional technology compatibility, the compound eye type solar cell package glass can improve photoelectric conversion efficiency of an existing commercial crystalline silicon solar cell assembly, and complex and high-cost automatic track of the solar cell assembly to the sun is avoided.

Description

technical field [0001] The invention relates to a solar cell, in particular to a compound-eye type solar cell encapsulating glass and a preparation method and application thereof. Background technique [0002] The working environment of crystalline silicon cells is relatively complicated. Generally, they are packaged with photovoltaic glass as protection to make them have good mechanical properties to adapt to various harsh environments. With the reduction of the cost of silicon materials, photovoltaic power stations mostly use flat-plate cells for fixed installation. . Such photovoltaic power plants have a common disadvantage: cloudy weather, morning or evening light is very weak, oblique light reflected on the surface of the cell is very large, resulting in loss of light energy, and the weak light response of silicon solar cells is very poor. At present, preparing suede and coating anti-reflection film are all effective measures to reduce the loss of light energy, but the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/087C03C6/00C03B19/02H01L31/048H01L31/054
CPCC03C1/00H01L31/0481H01L31/0543Y02E10/52
Inventor 陈朝杨星陈佳超李扬
Owner XIAMEN UNIV