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Photovoltaic module, preparation method and application thereof

A photovoltaic module, a type of technology, applied in the field of photovoltaic modules and their preparation, can solve the problems of complex operation and insufficient reduction of the target area, and achieve the effects of improving aesthetics, saving production costs, and reducing stress

Active Publication Date: 2021-01-05
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

However, the above method has problems such as complicated operation and insufficient reduction of the target area.

Method used

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  • Photovoltaic module, preparation method and application thereof
  • Photovoltaic module, preparation method and application thereof
  • Photovoltaic module, preparation method and application thereof

Examples

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preparation example Construction

[0072] An embodiment of the present invention provides a method for preparing a photovoltaic module, comprising the following steps:

[0073] In step 1, a plurality of first battery slices are connected in series with second battery slices to obtain a battery string, and the first battery slices and the second battery slices are of different types.

[0074] Step 2: Connect one end of the flexible conductive material to the back electrode of the first battery slice corresponding to the positive pole of one battery string, and connect the other end to the back electrode of the second battery slice corresponding to the negative pole of the other battery string.

[0075] The method is suitable for preparing full-sheet assemblies, half-sheet assemblies or stitch-welded assemblies. in Figure 4 for the full-chip component, Figure 5 for half-chip components. Stitch welded assembly structure and Figure 4 or Figure 5 The structure in is similar, except that there are no gaps be...

Embodiment 1

[0090] 158.75mm×158.75mm 9BB double-sided PERC is used to make a 60-type single-glass module. The interconnection bar is a tin-coated interconnection bar with a diameter of 0.3mm, and the cross-section of the flexible bus bar is 14mm×0.15mm. Insert the battery string according to the Figure 4The connection sequence of the battery sheets in the middle is welded well, and the tails of the interconnection strips of the back electrodes of the two battery cells at the beginning and end of the battery string are crushed. The length and thickness are suitable for not affecting the welding quality and causing hidden cracks in the battery sheets, preferably 15-20mm long. After the thickness is flattened, it is between 0.1 and 0.2mm. Arrange the battery strings according to the stacked layout, and then weld the bus bar and the flattened interconnection bar with an electric soldering iron to connect two adjacent battery strings. , When welding, a gasket is required below to prevent the ...

Embodiment 2

[0092] 158.75mm×158.75mm 9BB double-sided PERC is used to make a 60-type single-glass module. The interconnection bar is a tin-coated interconnection bar with a diameter of 0.3mm, and the cross-section of the flexible bus bar is 14mm×0.15mm. Insert the battery string according to the Figure 4 The connection sequence of the middle cells is welded, and the silicone conductive adhesive containing pure silver conductive particles is evenly coated on the outermost back electrodes of the cells at both ends of the battery string, and then the bus bar is placed to connect the two adjacent battery strings in series , and then heated with a heating plate at 160°C for 10 minutes to cure the conductive adhesive. After lamination, no bus bars can be seen from the front, and no cracks were found in EL photographs. compared to Figure 1a In the design, the area of ​​the component is reduced by 0.02m 2 , so the photoelectric conversion capability per unit area of ​​the photovoltaic module ...

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Abstract

The invention discloses a photovoltaic module, a preparation method and the application thereof, relates to the field of solar cell manufacturing, and is used for reducing a non-power-generation areaof the photovoltaic module. The photovoltaic module comprises a flexible conductive material and a cell string. The cell string comprises battery pieces; wherein the flexible conductive material is connected with a battery piece corresponding to the positive electrode of one cell string and a battery piece corresponding to the negative electrode of the other cell string to obtain a series circuitof the cell strings; and the flexible conductive material is arranged on the back surface of the battery piece connected with the flexible conductive material. According to the technical scheme provided by the invention, a non-power-generation area generated by shielding of the bus bar can be reduced, the attractiveness of the module is improved, the manufacturing cost of the photovoltaic module is saved, and the photovoltaic module has relatively high applicability.

Description

technical field [0001] The invention relates to the field of solar cell manufacturing, in particular to a photovoltaic module and its preparation method and application. Background technique [0002] At present, the design of conventional photovoltaic modules is to connect P-type cells or N-type cells in series through interconnection bars to form battery strings, and then use bus bars to realize series or parallel connection between battery strings, and finally output current. However, the use of bus bars increases the non-generating area of ​​the photovoltaic module. [0003] In order to reduce the area of ​​this area, there are usually two main solutions. One is to start from the material and reduce the bus bar with a width of 6mm to a bus bar with a width of 4mm; the other is to start from the layout design. Reduce the distance between the bus bar and the battery sheet from 3mm to 2mm. However, the above method has problems such as complex operation and insufficient re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05H01L31/18
CPCH01L31/0504H01L31/0512H01L31/18Y02P70/50
Inventor 叶玉秋薛文娟周艳方
Owner 晶澳(扬州)新能源有限公司
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