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Manufacturing method of photovoltaic modules

A technology of photovoltaic modules and production methods, applied in photovoltaic power generation, electrical components, semiconductor devices, etc., to achieve the effect of reducing production costs

Active Publication Date: 2019-02-15
晶澳(扬州)新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for manufacturing photovoltaic modules, which is used to solve the problem that the current sliced ​​battery components in the prior art generally only divide the battery into the same sliced ​​battery units, and then produce a component of a specification. problem

Method used

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  • Manufacturing method of photovoltaic modules
  • Manufacturing method of photovoltaic modules
  • Manufacturing method of photovoltaic modules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The battery electrodes and slicing methods of a single whole battery sheet are as follows: figure 1 shown.

[0069] The electrodes of the whole battery sheet include multiple columns of main grids 1 arranged in parallel on the surface of the silicon wafer and multiple rows of parallel auxiliary grids 2 perpendicular to the main grid 1. The direction of the grid is 3 laser cuts in the middle and lower part of the cell to form a sliced ​​cell A and a sliced ​​cell B different from the sliced ​​cell A, where the sliced ​​cell A is the same length as the sliced ​​cell B, and the width different.

[0070] The silicon wafer used in the whole cell is a P-type quasi-square monocrystalline silicon wafer with a side length of 156.75mm.

[0071] The electrode passes through the laser cutting area (the laser cuts directly on the electrode, and there is no blank space for laser cutting on the electrode), and the laser is used to cut the battery into 1 sliced ​​battery sheet A alon...

Embodiment 2

[0078] The battery electrodes and slicing methods of a single whole battery sheet are as follows: figure 2 shown.

[0079] The electrodes of the whole battery sheet include multiple columns of main grids 1 arranged in parallel on the surface of the battery sheet and multiple rows of parallel auxiliary grids 2 perpendicular to the main grid 1. The direction is laser cutting twice in the middle and upper part 4 of the battery sheet and the middle and lower part 3 of the battery sheet respectively to form a sliced ​​battery sheet A and two sliced ​​battery cells B different from the sliced ​​battery unit A, wherein the sliced ​​battery piece A is different from the sliced ​​battery unit A The sliced ​​cells B have the same length but different widths.

[0080] The silicon wafer used in the battery is a P-type quasi-square monocrystalline silicon wafer with a side length of 156.75 mm.

[0081] The electrodes pass through the laser cutting area, and the laser is used to cut the ...

Embodiment 3

[0086] The battery electrodes and slicing methods of a single whole battery sheet are as follows: image 3 shown.

[0087] The electrodes of the entire battery sheet include the first regional electrode 5, the second regional electrode 6, the third regional electrode 7 and the fourth regional electrode 8 from top to bottom, wherein the first regional electrode 5, the second regional electrode 6 and the fourth regional electrode The four-area electrode structure 8 is the same in shape and size, and the third area electrode 7 is different from the other area electrodes in structure, shape, and size. There is a gap 9 for laser cutting between the electrodes in each area, and the entire battery sheet is placed along the gap 9 Laser cutting is performed to form one sliced ​​cell A corresponding to the third regional electrode 7 and three sliced ​​cells B corresponding to the first regional electrode 5 , the second regional electrode 6 and the fourth regional electrode 8 .

[0088]...

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Abstract

The invention discloses a manufacturing method of photovoltaic modules. The manufacturing method comprises the following steps of selecting at least one full-wafer battery piece; performing unequal cutting on the full-wafer battery pieces by use of a laser, wherein each of the full-wafer battery pieces is cut into at least two types of different slice battery pieces; and manufacturing the photovoltaic modules by respectively use of the same slice battery pieces in the obtained slice battery pieces to obtain at least two types of photovoltaic modules. According to the method, when the photovoltaic modules are manufactured, a single battery designed by use of a special electrode is cut into two or more different slice battery pieces by use of the laser; the photovoltaic modules are respectively manufactured by use of the same slice battery pieces to obtain two or more different photovoltaic modules; at least two types of different photovoltaic modules can be simultaneously manufactured through the method, and at least one photovoltaic module with higher power can be obtained compared with a conventional module; and meanwhile, different photovoltaic modules are manufactured by use ofdifferent regions of a battery so that the battery is fully utilized and the production cost of the photovoltaic modules is reduced.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic cells, and in particular relates to a method for manufacturing a photovoltaic module. Background technique [0002] In traditional photovoltaic modules, multiple whole cells are usually connected to each other through ribbons, so that one end of the ribbon is connected to one electrode of the cell, and the other end is connected to the other electrode of the adjacent cell, thereby forming a battery string. However, as the market demand for high-power components is getting higher and higher, the power of traditional photovoltaic modules has been difficult to meet high demand. [0003] In recent years, a variety of sliced ​​battery components have emerged. The basic realization method is to design a new electrode structure, use a laser to cut the entire battery into two or more sliced ​​battery cells before making the component, and then use series or series and The method of combining in para...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18
CPCH01L31/1804Y02E10/547Y02P70/50
Inventor 黄卓周艳方
Owner 晶澳(扬州)新能源有限公司