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A solar cell packaging structure

A technology for solar cells and solar cells, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as reducing the efficiency of solar cells, and achieve the effects of eliminating heat island effect, improving conversion rate, and high utilization rate

Inactive Publication Date: 2016-08-24
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this passive means of preventing the heat island effect will obviously reduce the efficiency of solar cells

Method used

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  • A solar cell packaging structure
  • A solar cell packaging structure
  • A solar cell packaging structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As mentioned above, the solar cell encapsulation structure of this embodiment includes double-layer glass with a cavity 4, unpackaged solar cell slices 3 placed in the cavity 4, and the double-layer glass is formed by front side glass 1 and rear side glass 2. It is formed by sealing and splicing around the double-layer glass. The back of the solar cell 3 is fixed on the inner wall of the rear glass 2. The distance from the light-facing surface of the solar cell 3 to the inner wall of the front glass 1 is 3 cm. Glass 1 is solar white glass with a thickness of 4mm.

[0024] When small particles are present, the incident light is diffracted, eliminating shadows on the solar cell. The solar cell itself is not packaged, so the manufacture of 250W solar modules hardly increases the cost and solves the problem of heat island effect.

[0025] In order to prevent the incoming light from escaping due to reflection, figure 1 In the shown embodiment, the inner s...

Embodiment 2

[0028] Such as figure 2 As shown, the main structure of this embodiment is the same as that of Embodiment 1, the difference is that the inner wall of the front side glass 1 is shaped on a strip-shaped depression 7, and the glass at each depression 7 forms a concave lens with a width of 3 cm and a focal length of 3 cm. Such as figure 2 As shown, when the light is vertically incident, the parallel light at the edge of the concave lens can be projected to the center of the solar panel behind the adjacent concave lens. Lines with arrows in the figure represent light rays. For the rest of the symbols in the figure, refer to figure 1 . It can be seen from the figure that the light diverges through the concave lens, so the blocked area will be compensated by the light scattered by the nearby concave lens, thereby eliminating the shadow on the solar cell and preventing the heat island effect.

Embodiment 3

[0030] Such as image 3 As shown, the main structure of this embodiment is the same as that of Embodiment 1, the difference is that the inner wall of the front side glass 1 is formed with a strip-shaped arc-shaped depression 7, and the corresponding position on the outside is formed with a strip-shaped arc-shaped protrusion 8, and each depression 7 and The protrusion 8 forms a concave lens with a width of 3 cm and a focal length of 3 cm. Such as image 3 As shown, when the light is vertically incident, the parallel light at the edge of the concave lens can be projected to the center of the solar panel behind the adjacent concave lens. Lines with arrows in the figure represent light rays. For the rest of the symbols in the figure, refer to figure 1 .

[0031] The principle of this embodiment is the same as that of Embodiment 2, and the further improvement is that the front side glass 1 is made into a shape with wavy protrusions, so that when the leaves fall on the front sid...

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Abstract

The invention relates to a solar cell packaging structure which comprises a double glazing with a cavity and an unpackaged solar cell placed in the cavity. The double glazing is formed by splicing a front-side glass and a rear-side glass peripherally in a sealing manner, the interior of the double glazing is vacuumized, a back of the solar cell is fixed on an inner wall of the rear-side glass, distance from a light face of the solar cell to an inner wall of the front-side glass is 3-5cm (centimeter), and the front-side glass is solar energy white glass or plexiglass and is 3-5mm (millimeter) in thickness. The solar cell is placed in the double glazing, and a certain distance is reserved between the light face of the solar cell and the front-side glass, when an incident light penetrates through the double glazing, refraction and diffraction are caused, and therefore, shielding of guano to sunshine is lightened, dark areas are not formed on the solar cell, and heat island effect is eliminated. The solar cell packaging structure is higher in use ratio of solar energy and is convenient in maintenance, and frequency of cell surface cleaning is greatly lowered, labor input is reduced, and the solar cell packaging structure is easy to be manufactured industrially.

Description

technical field [0001] The invention relates to a solar cell packaging structure, which belongs to the technical field of solar cell manufacturing. Background technique [0002] With the improvement of people's awareness of environmental protection, the demand for clean energy is increasing. Among the new clean energy researched by people, solar energy, as a clean energy that is not subject to geographical restrictions, has become the main direction of new energy development in the future. Solar cells are the main devices that people use the sun's light energy to convert into electrical energy. [0003] At present, solar cells are all processed with silicon as the base material. Since silicon is easily oxidized in the air, the solar cells need to be packaged. Traditionally, two pieces of glass are used to bond the front and back of the solar cell for packaging. At present, the mainstream solar cell packaging uses fluorine-containing resin and other transparent resins inste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/048H01L31/052H01L31/054
CPCY02E10/52
Inventor 王强宋长青朱海峰花国然张士兵
Owner NANTONG UNIVERSITY
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