CN206041916U - A high-efficiency anti-reflection polycrystalline silicon solar cell - Google Patents

Abstract

The utility model discloses a high efficiency prevents reflecting polycrystalline silicon solar cell, which comprises a cell panel and is characterized in tha, fixed frame is installed in the outside of panel, the corner of fixed frame is equipped with the mounting hole, the surperficial vertical main grid line that is provided with of panel, the surface of panel transversely is provided with vice grid line, the surperficial equidistance of panel bonds and is fixed with polycrystalline silicon cell slice, just polycrystalline silicon cell slice includes silicon oxynitride layer, silicon dioxide layer and polycrystalline silicon base member. The utility model discloses set up fixed frame around the panel, can protect the power generating equipment effectively, prolonged solar cell's life, directly use circular polycrystal silicon chip, reduced the processing cost of polycrystal silicon chip, improved the utilization ratio of polycrystalline silicon, prevent refracting layer through adding the multilayer for electricity generation main part upper portion, this kind of stack membrane is compared with the monofilm has better optics matching characteristic to the availability factor of light energy and the conversion efficiency of electric energy have been improved.

Description

A high-efficiency anti-reflection polycrystalline silicon solar cell

technical field

The utility model relates to the technical field of photovoltaic power generation, in particular to a high-efficiency anti-reflection polycrystalline silicon solar cell.

Background technique

Polycrystalline silicon solar panels are solar modules composed of polycrystalline silicon solar cells with high conversion efficiency arranged in different strings and parallel arrays. Its function is to convert solar energy into electrical energy. The conversion efficiency of solar cells is generally defined as the ratio of the output power of the cell to the total power of sunlight incident on the surface of the cell. Sunlight will be reflected and refracted when it hits the surface of the cell. In order to improve the conversion efficiency of the cell, it is necessary to minimize the refraction loss and increase the absorption. However, crystalline silicon solar cells and thin-film solar cells are the mainstream in the main power generation market. Both have their own advantages and disadvantages. It is also high, and it is more suitable for thin-film solar cells to generate electricity under outdoor sunlight. The relative equipment cost is relatively high, but the consumption and battery cost are very low, and the photoelectric conversion efficiency is lower than that of crystalline silicon cells. With the development of solar technology, in order to reduce the cost and improve the efficiency of light energy, the surface of the cell is usually coated with an anti-refraction film to reduce the refraction loss and increase the absorption. Usually, a single-layer structure is used, and it is difficult to obtain the ideal anti-refraction effect.

Utility model content

The purpose of this utility model is to provide a high-efficiency anti-reflection polycrystalline silicon solar cell to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a high-efficiency anti-reflection polycrystalline silicon solar cell, including a battery panel, a fixed frame is arranged around the battery panel, and mounting holes are provided at the corners of the fixed frame, so that The surface of the battery board is vertically provided with main grid lines, the surface of the battery board is provided with sub-grid lines horizontally, the surface of the battery board is equidistantly bonded and fixed with polycrystalline silicon cells, and the polycrystalline silicon cells include nitrogen Silicon oxide layer, silicon dioxide layer and polysilicon substrate.

Preferably, the main grid lines on the surface of the solar panel are perpendicular to the auxiliary grid lines, and the width of the main grid lines is greater than the width of the auxiliary grid lines.

Preferably, there are three main grid lines on the surface of the solar panel, and at least seven auxiliary grid lines on the surface of the solar panel.

Preferably, the polysilicon cell is a laminated structure, and from top to bottom is a silicon oxynitride layer, a silicon dioxide layer and a polysilicon substrate.

Preferably, the polycrystalline silicon solar cells are circular, and at least twenty-four groups of the polycrystalline silicon solar cells are equidistantly arranged.

Compared with the prior art, the utility model has the beneficial effects that: the high-efficiency anti-reflection polysilicon solar cell is provided with a fixed frame around the cell panel, which can effectively protect the power generation facilities, prevent deformation, and prolong the service life of the solar cell; directly The use of circular polysilicon wafers reduces the processing cost of polysilicon wafers, improves the utilization rate of polysilicon, and saves costs; by adding multiple anti-refraction layers to the upper part of the power generation body, this laminated film has more advantages than a single-layer film. Good optical matching characteristics, thereby improving the use efficiency of light energy and the conversion efficiency of electric energy, and has a very high promotion value.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the utility model polysilicon solar cell.

In the figure: 1 solar panel, 2 fixed frame, 3 installation hole, 4 main grid line, 5 sub grid line, 6 polysilicon cell, 7 silicon oxynitride layer, 8 silicon dioxide layer, 9 polysilicon substrate.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1-2, the utility model provides a technical solution: a high-efficiency anti-reflection polysilicon solar cell, including a panel 1, a fixed frame 2 is arranged around the panel 1, and the sides of the fixed frame 2 Mounting holes 3 are provided at the corners, main grid lines 4 are arranged vertically on the surface of the battery board 1 , sub-grid lines 5 are arranged horizontally on the surface of the battery board 1 , and the surface of the battery board 1 is equidistantly bonded and fixed The polysilicon cell 6 includes a silicon oxynitride layer 7 , a silicon dioxide layer 8 and a polysilicon substrate 9 .

Further, the main grid line 4 on the surface of the solar panel 1 is perpendicular to the auxiliary grid line 5, and the width of the main grid line 4 is greater than the width of the auxiliary grid line 5, and the main grid line 4 and the auxiliary grid line 5 can be perpendicular to each other. More science to make solar cells work.

Further, there are three main grid lines 4 on the surface of the solar panel 1, and at least seven auxiliary grid lines 5 on the surface of the solar panel 1, the number of main grid lines 4 is small, and the number of auxiliary grid lines 5 is large, which can reduce production costs .

Further, the polysilicon battery sheet 6 is a laminated structure, and from top to bottom is a silicon oxynitride layer 7, a silicon dioxide layer 8 and a polysilicon substrate 9. By adding a multi-layer anti-refraction layer to the upper part of the power generation body, this Compared with the single-layer film, this kind of laminated film has better optical matching characteristics, thereby improving the use efficiency of light energy and the conversion efficiency of electric energy.

Further, the polycrystalline silicon cells 6 are circular, and at least twenty-four groups of the polycrystalline silicon cells 6 are equidistantly arranged, and the circular polycrystalline silicon cells are used directly, which reduces the processing cost of the polycrystalline silicon cells and improves the utilization of the polycrystalline silicon cells. Rate.

The high-efficiency anti-reflection polycrystalline silicon solar cell is installed in a designated position through the installation hole 3, and a fixed frame is installed around the cell panel 1, and is sealed with silica gel, which can effectively protect the power generation facility, prevent deformation, and prolong the service life of the solar cell. service life, the main grid lines 4 and the auxiliary grid lines 5 are made of silver, which has good conductivity, the number of main grid lines 4 is small, and the number of auxiliary grid lines 5 is large, which can reduce production costs, and the main grid lines 4 and The secondary grid lines 5 are arranged vertically. The main power generation of the high-efficiency anti-reflection polysilicon solar cell uses a circular polysilicon wafer. The circular polysilicon wafer is used directly, which reduces the processing cost of the polysilicon wafer, improves the utilization rate of the polysilicon, and saves cost, and adopts a multi-layer reflective layer structure, from top to bottom are silicon oxynitride layer 7, silicon dioxide layer 8 and polysilicon substrate 9, this laminated film has better optical matching than single-layer film characteristics, thereby improving the use efficiency of light energy and the conversion efficiency of electric energy.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present utility model.

Claims (5)

1. the anti-refraction polysilicon solar cell of a kind of high efficiency, including cell panel（1）, it is characterised in that：The cell panel（1） Outside fixed border is installed（2）, the fixed border（2）Corner be provided with installing hole（3）, the cell panel（1）Table Face is vertically provided with main gate line（4）, the cell panel（1）Surface be horizontally arranged with secondary grid line（5）, the cell panel（1）'s Surface is equidistant to be adhesively fixed with polycrystalline silicon battery plate（6）, and the polycrystalline silicon battery plate（6）Including silicon oxynitride layer（7）, two Silicon oxide layer（8）With polycrystalline silicon substrate（9）.

2. the anti-refraction polysilicon solar cell of a kind of high efficiency according to claim 1, it is characterised in that：The battery Plate（1）The main gate line on surface（4）Perpendicular to secondary grid line（5）, and the main gate line（4）Width more than secondary grid line（5）Width.

3. the anti-refraction polysilicon solar cell of a kind of high efficiency according to claim 1, it is characterised in that：The battery Plate（1）The main gate line on surface（4）Have three, and the cell panel（1）The secondary grid line on surface（5）At least seven.

4. the anti-refraction polysilicon solar cell of a kind of high efficiency according to claim 1, it is characterised in that：The polycrystalline Silicon cell（6）For laminated construction, and silicon oxynitride layer is followed successively by from top to bottom（7）, silicon dioxide layer（8）With polycrystalline silicon substrate （9）.

5. the anti-refraction polysilicon solar cell of a kind of high efficiency according to claim 1, it is characterised in that：The polycrystalline Silicon cell（6）For circle, and the polycrystalline silicon battery plate（6）Equidistantly at least provided with 24 groups.