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Photovoltaic cell high-efficiency assembly manufacturing process

A photovoltaic cell and manufacturing process technology, applied in photovoltaic power generation, electrical components, sustainable manufacturing/processing, etc., can solve problems such as affecting the power generation efficiency of solar cells, reducing the light-receiving area of ​​solar cells, etc., to reduce costs and improve Component efficiency, the effect of reducing adverse effects

Inactive Publication Date: 2020-11-03
SUZHOU AUTOWAY SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when arranging the main grid lines and thin grid lines, the light-receiving area of ​​the solar cells will be reduced, thereby affecting the power generation efficiency of the solar cells.

Method used

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  • Photovoltaic cell high-efficiency assembly manufacturing process
  • Photovoltaic cell high-efficiency assembly manufacturing process
  • Photovoltaic cell high-efficiency assembly manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] combine Figure 1~3 As shown, the high-efficiency photovoltaic cell manufacturing process of this embodiment includes the following steps:

[0034] S1. Provide battery slices, and divide the battery slices into N battery slice units 1 suitable for series welding.

[0035] In this embodiment, battery slices with a size of 156-230 mm can be used, and the battery slices of this size are divided into N battery slice units 1 suitable for serial welding, where N≤8. For example, a battery sheet of this size can be divided into 2 pieces, 3 pieces, 4 pieces or 5 pieces suitable for stringing.

[0036] S2. Thin copper wires 2 are arranged on the front and back of each battery unit 1, and the thin copper wires 2 on either side intersect with the fine grids 3 on the battery unit 1 to form a grid shape.

[0037] This step is used to replace the main grid or the main grid and its large welding points on the battery sheet with the thin copper wire 2 mesh, realizing the design withou...

Embodiment 2

[0048] The difference between this embodiment and Embodiment 1 lies in that each cell unit 1 is connected in series by another seam welding method. In this example, the above stitch welding can be realized in the following ways, specifically, as Figure 5 Shown:

[0049] S31', connect the thin copper wire 2 on the front side of one cell unit 1 with the welding ribbon 4 provided on the front side, and connect the thin copper wire 2 on the back side of the other battery unit 1 with the welding ribbon 4 provided on the back side;

[0050] S32', stacking the edges of the two battery pieces together, so that the welding ribbon 4 on the front side of one battery piece unit 1 is connected to the welding ribbon 4 on the back side of the other battery piece unit 1 through conductive glue.

[0051] At this time, the thin copper wires 2 are all inside the cell unit 1, and the ends of the thin copper wires 2 are 0.1-0.5 mm away from the edge of the cell unit 1 where they are located, and t...

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Abstract

The invention provides a photovoltaic cell high-efficiency assembly manufacturing process which comprises the following steps of S1, providing a cell, and dividing the cell into N cell units suitablefor series welding; S2, arranging fine copper wires on the front surface and the back surface of each cell unit, wherein the fine copper wires on any surface and the fine grids on the cell units are crossed to form a grid shape; and S3, connecting the cells in series in a stitch welding manner to form the efficient battery assembly. According to the photovoltaic cell efficient assembly manufacturing process, the fine copper wire mesh is used for replacing a main grid or the main grid and large welding points on an original cell, and the design without the main grid is achieved. In addition, due to the fact that main grid silver grid lines are not adopted, the cost of a products is greatly reduced, and better economic benefits are obtained. And meanwhile, the plurality of fine copper wiresreplacing the grid lines are interwoven to form an efficient current collection grid structure, so that the assembly efficiency can be improved, adverse effects caused by local damage of the cells arereduced, and the reliability of the assembly is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a process for manufacturing high-efficiency components of photovoltaic cells. Background technique [0002] Solar cells are products that directly or indirectly convert solar radiation energy into electrical energy through photoelectric or photochemical effects by absorbing sunlight. At present, in the process of generating electricity from solar cells, it is necessary to install bus bars and thin grid lines on the solar cells. . However, when the main grid lines and thin grid lines are arranged, the light-receiving area of ​​the solar cells will be reduced, thereby affecting the power generation efficiency of the solar cells. Therefore, in view of the above problems, it is necessary to propose a further solution. Contents of the invention [0003] The invention aims to provide a high-efficiency module manufacturing process for photovoltaic cells to overcome the deficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/0224H01L31/05
CPCH01L31/022433H01L31/022441H01L31/0508H01L31/0512H01L31/0516H01L31/188Y02E10/50Y02P70/50
Inventor 鲁乾坤彭刘辉
Owner SUZHOU AUTOWAY SYST
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