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Laminated solar battery double-glass assembly and preparation method thereof

A battery and module technology, applied in the field of solar cells, can solve the problems of high fragmentation rate, increased operation complexity, low degree of automation, etc., to reduce stress generation, reduce module space waste, and improve production efficiency.

Pending Publication Date: 2019-10-18
JA XINGTAI SOLAR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the disadvantages of this method include: In order to improve the utilization rate of the area, the metal bus bar will be hidden on the back of the battery as much as possible, and the bus bar is usually connected in parallel to one end of the bypass diode through a jumper on the back of the module. There are usually 4 to 8 jumpers connected in parallel to 2-4 bypass diodes, which not only increases the complexity of operation, but also has a high fragmentation rate and a low degree of automation

Method used

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  • Laminated solar battery double-glass assembly and preparation method thereof
  • Laminated solar battery double-glass assembly and preparation method thereof
  • Laminated solar battery double-glass assembly and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0104] figure 1 It is a schematic structural view of the double-glass module of shingled solar cells in Example 1 of the present invention.

[0105] Such as figure 1 As shown, the shingled-type shingled solar cell double-glass module provided in this embodiment includes a glass cover plate 101, an encapsulating adhesive film 201, a battery string 301, and a photovoltaic conductive glass 401 in sequence from the light-receiving surface to the backlight surface.

[0106] Wherein, the battery string group 301 is composed of a plurality of battery strings 500 . Such as Figure 5 As shown, each battery string 500 is formed by interconnecting multiple first-type battery slices a, a' and one second-type battery slice b.

[0107] Wherein, the back side of the first type battery sheet a' has two main grid electrodes 14, 15, and the front side of the second type battery sheet b has electrodes 16 (the front side may also have no electrodes when it is in the position of the first sheet...

Embodiment 2

[0133] The structure of the shingled solar cell double-glass module provided in this embodiment is similar to that of Embodiment 1, except that: Figure 12 As shown, the specific electrode position arrangement and shape of the second battery sheet b' are different from Example 1; and as Figure 13 As shown, when preparing the battery string 500, the second battery sheet b' is located in the middle of the battery string 500 (such as Figure 12 , Figure 13 As shown), and the upper and lower rows of batteries are connected in series and parallel; correspondingly, the photovoltaic conductive glass 401 only includes the upper and lower two sets of first conductive structures 2, and the second conductive structure 3 is located on one side of the vertical edge.

[0134] Others, the specific preparation process of the battery sheet and the specific preparation process of the double-glass module of the shingled solar cell are similar to the embodiment 1, and the detailed description ...

Embodiment 3

[0136] The shingled solar cell double-glass module provided in this embodiment, such as Figure 16-Figure 20 As shown, two small series of battery strings are formed by stacking the same number of first-type battery pieces and / or second-type battery pieces in series. The area of ​​the parallel-connected battery piece in the middle is twice as large as that of other battery pieces. And the current is twice that of other circuits. In this embodiment, there are two kinds of battery strings for combination to form a battery string group, one is that the middle battery is drawn out from the positive pole, and the other is that the middle battery is drawn out from the negative pole.

[0137] Such as Figure 17-Figure 18 As shown, the two small battery strings are connected in series using the first type of cells and / or the second type of cells by lamination, and then use a piece of the first type or the second type with twice the area. The battery slice connects two small strings ...

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Abstract

The invention provides a laminated solar battery double-glass assembly and a preparation method thereof. The laminated solar battery double-glass assembly is provided with a glass cover, an encapsulation film, a battery string set and photovoltaic conductive glass, wherein the battery string set contains one or more battery strings, the battery string is formed by connecting multiple first batteries and at least one second battery, a front electrode and a back electrode of each of the multiple first batteries have opposite polarities, a back electrode on a back surface of the second battery includes a positive electrode and a negative electrode, electrodes are respectively disposed at two ends of the battery string, the photovoltaic conductive glass includes glass, a first conductive structure, a second conductive structure and a film layer, an electrode connection opening is arranged at the position on the film layer corresponding to the first conductive structure, the electrodes at both ends of the battery string penetrate through the electrode connection opening and then are electrically connected with the first conductive structure, and the first conductive structure includes aconductive layer disposed directly on the glass.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a double-glass component of an shingled solar cell and a preparation method thereof. Background technique [0002] Shingled solar cell double-glass modules will be an important development route for high-efficiency photovoltaic modules in the foreseeable future. The first feature of shingled modules is to cut the traditional whole solar cell into several small pieces (1 / 4,1 / 5,1 / 6, etc., can be divided evenly or unevenly), and then apply conductive glue on the electrodes of the battery slices, and the edges of adjacent battery slices are arranged to overlap up and down. After the conductive glue is cured, the battery slices are connected together to form a battery string In this way, conductive adhesive can be used to replace the traditional metal ribbon, and the utilization rate of the module area can be improved by using the shingled connection method; secondly, the double-...

Claims

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Application Information

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IPC IPC(8): H01L31/048H01L31/05H01L31/18
CPCH01L31/0488H01L31/0504H01L31/1876Y02E10/50Y02P70/50
Inventor 张春阳陈宏月周艳方
Owner JA XINGTAI SOLAR CO LTD