A kind of solar cell component and preparation method thereof

A technology for solar cells and modules, applied in the field of solar cells, can solve the problems of increasing the risk of debris, drawing out the welding tape, and the area of ​​the module cannot be fully utilized, and achieves the effects of increasing efficiency and installation cost, reducing debris rate, and reducing requirements.

Active Publication Date: 2020-11-13
JA SOLAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, when making vertical shingled modules in the prior art, if it is necessary to incorporate diodes, the battery strings need to be segmented, and then the battery strings must be connected using busbars. Therefore, the area of ​​the modules cannot be fully utilized, and the battery strings must be connected. Strings will inevitably increase the risk of fragmentation. In addition, when only one structure of cells is used for shingling connection, it is impossible to lead all the ribbons from the back of the cell

Method used

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  • A kind of solar cell component and preparation method thereof
  • A kind of solar cell component and preparation method thereof
  • A kind of solar cell component and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] figure 1 It is a schematic structural view of the solar cell module in Embodiment 1 of the present invention, as figure 1 As shown, the shingled solar cell module provided in this embodiment includes a cover material 101, a first encapsulant film 201, a battery string 301, a second encapsulant film 401, and a back sheet material 501 in order from bottom to top. , the battery string group 301 is formed by connecting multiple battery strings 601, and each battery string 601 is formed by connecting multiple first-type battery slices 701 and at least one second-type battery slice 801, wherein multiple first-type battery slices The polarities of the front electrodes of 701 are consistent, and the polarities of the back electrodes of the plurality of first-type battery sheets 701 are also consistent, and the front electrodes of the plurality of first-type battery sheets 701 and the polarities of the plurality of first-type battery sheets 701 The polarity of the back electrod...

Embodiment 2

[0108] The structure of the solar cell module provided in this embodiment is the same as that in Embodiment 1.

[0109] The first battery sheet is a conventional battery sheet, and the conventional battery is the same as in Example 1, such as figure 2 and image 3 As shown, the front and back sides of the first type of solar cell are respectively provided with main grids, and the whole solar cell before cutting is cut at the reserved position close to the main grid to form multiple first type of solar cells, and the main grids are distributed in On the long side of the first type of battery and perpendicular to the short side of the first type of battery.

[0110] Such as Figure 8 As shown, the second type of battery sheet is a back contact battery sheet, the front side of the back contact battery sheet is not provided with electrodes, and the positive and negative electrodes of the back contact battery sheet are both arranged on the back side of the back contact battery s...

Embodiment 3

[0123] The structure of the solar cell module provided in this embodiment is the same as that in Embodiment 1.

[0124] Such as figure 2 As shown, the front and back of the first battery sheet are respectively provided with busbars, and the first battery sheet is cut near the reserved position of the busbar to form a plurality of first battery sheets, and the busbars are distributed on the first battery sheet. On the long side of the cell and perpendicular to the short side of the first type of cell.

[0125] Such as Figure 10 As shown, the second type of cell is a back-contact cell. There is no electrode on the front of the back-contact cell, and the positive and negative electrodes of the back-contact cell are both arranged on the back of the back-contact cell. Cutting is performed near the reserved position of the main grid on the back to form a plurality of second battery slices b". The distribution of main grids with the same characteristics, all the main grids are p...

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Abstract

The invention discloses a solar cell assembly, which comprises a cover plate material, a first encapsulation film, a battery string, a second encapsulation film and a back plate material. The battery string is formed by connecting a plurality of battery strings. The string is formed by connecting multiple first-type battery slices and at least one second-type battery slice, and at least one of the multiple first-type battery slices has a first current derivation unit on the back, and at least one second-type battery slice On the back side of the cell sheet there is a second current extraction unit. The solar cell module uses cells of two structures for shingled connection, which can lead the current lead-out unit from the back of the cell, and reduce the difficulty of incorporating diodes, without increasing the area of ​​the component, and can also reduce the fragmentation of solar cells rate, thereby improving component yield and component efficiency. The invention also discloses a preparation method of the solar battery module.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a solar cell module and a preparation method thereof. Background technique [0002] With the continuous development of society, human beings pay more and more attention to the use of renewable energy, and solar energy is the easiest energy for us human beings to obtain. How to use solar energy has always been a research topic for human beings. Among them, solar photovoltaic cells convert solar energy into electrical energy one of the most effective ways. In recent years, the world output of solar cells has grown at an annual rate of 30-40%, becoming one of the fastest-growing industries in the market, among which crystalline silicon solar cells have gradually matured and occupied a dominant position in the market. [0003] With the development of crystalline silicon solar cell technology, various high-efficiency cell technologies have gradually matured. Compared ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/05H01L31/048
CPCH01L31/048H01L31/0504Y02E10/50H01L31/044H02S20/25H02S40/34H01L31/042Y02B10/10H01L31/049H02S50/15H01L31/0516
Inventor 陈宏月周艳方
Owner JA SOLAR
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