CN218996730U - Photovoltaic module - Google Patents

Abstract

The application discloses photovoltaic module relates to photovoltaic module technical field, and its characterized in that includes: the first glass layer is arranged on the outermost layer; the first isolation layer is arranged in the coverage area of the first glass layer; the battery piece layer is arranged on the lower end face of the first isolation layer; the second isolation layer is arranged on the opposite surface of the other side of the battery piece layer; the second glass layer is arranged on the lower end face of the second isolation layer; the first glass layer, the first isolation layer, the battery piece layer, the second isolation layer and the second glass layer form a laminated structure. This application keeps apart battery piece layer through setting up isolation layer one and isolation layer two and can not take place to melt the condition of cross-linking to owing to isolation layer one and isolation layer two do not bond after the lamination, observe the welding condition of area, solved unable welding condition of detecting the back welding area of lamination, thereby lead to the welding area to break away from the problem of battery piece.

Description

Photovoltaic module

Technical Field

The application relates to the technical field of photovoltaic modules, in particular to a photovoltaic module.

Background

The photovoltaic module is a core part in a solar power generation system, is also the most important part in the solar power generation system, and is generally used in various fields such as traffic, communication, petroleum, ocean, weather and the like. The photovoltaic module in the prior art mainly comprises glass, a battery piece and a back plate, is bonded by ethylene-vinyl acetate copolymer, and is packaged in an aluminum frame according to a layered structure of the glass, the ethylene-vinyl acetate copolymer, the battery piece, the ethylene-vinyl acetate copolymer and the back plate.

However, in the lamination process of the existing photovoltaic module, the ethylene-vinyl acetate copolymer and the battery piece are melted and crosslinked, the battery piece is wrapped in the ethylene-vinyl acetate copolymer, and the welding condition of the welding strip after lamination cannot be detected, so that the welding strip is separated from the battery piece, and huge loss is caused.

In view of this, a photovoltaic module is provided that can detect the welding condition of the solder ribbon after lamination without causing the solder ribbon to separate from the battery sheet.

Disclosure of Invention

The purpose of this application is to solve the unable welding condition that detects the welding strip of post-lamination of current photovoltaic module to lead to the welding strip to break away from the problem of battery piece, for solving above-mentioned technical problem, provide a can detect the welding condition of post-lamination welding strip, can not lead to the welding strip to break away from the photovoltaic module of battery piece.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme: a photovoltaic module, comprising: the first glass layer is arranged on the outermost layer; the first isolation layer is arranged in the coverage area of the first glass layer; the battery piece layer is arranged on the lower end face of the first isolation layer; the second isolation layer is arranged on the opposite surface of the other side of the battery piece layer; the second glass layer is arranged on the lower end face of the second isolation layer; the first glass layer, the first isolation layer, the battery piece layer, the second isolation layer and the second glass layer form a laminated structure.

Further, according to an embodiment of the present application, a glue layer one is provided between the glass layer one and the isolation layer one.

Further, according to an embodiment of the present application, the first glue layer includes a first glue film.

Further, according to an embodiment of the present application, the first adhesive film is an EVA adhesive film.

Further, according to the embodiment of the application, a second glue layer is arranged between the second isolation layer and the second glass layer.

Further, according to an embodiment of the present application, the second glue layer includes a second glue film.

Further, according to an embodiment of the present application, the second adhesive film is an EVA/POE/EPE/PVB adhesive film.

Further, according to the embodiment of the application, the battery piece layer comprises a plurality of battery pieces, and the battery pieces are arranged in an array.

Further, according to the embodiment of the present application, the first and second isolation layers are isolation films, and the ratio between the thickness of the isolation film and the thickness of the battery sheet layer is 1:2, the isolating film can be peeled off.

Further, according to an embodiment of the present application, the separator material is PET or PVC or PTFE.

Compared with the prior art, the battery piece layer is isolated by the first isolating layer and the second isolating layer, the situation of melting and crosslinking cannot occur, and after lamination, the situation of welding strips can be observed because the first isolating layer and the second isolating layer are not bonded, so that the problem that welding strips are separated from the battery piece due to the fact that the welding conditions of welding strips after lamination cannot be detected by the existing photovoltaic module is solved, and the good effect that welding strips are separated from the battery piece due to the fact that welding conditions of welding strips after lamination can be detected is achieved.

Drawings

The present application is further described below with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a photovoltaic module according to embodiment 1 of the present application.

Fig. 2 is a schematic structural view of a photovoltaic module cell layer according to the present application.

Fig. 3 is a schematic structural diagram of a photovoltaic module according to embodiment 2 of the present application.

Fig. 4 is a schematic structural diagram of a photovoltaic module fixing layer 1 according to embodiment 2 of the present application.

In the accompanying drawings

1. Glass layer I2, glue layer I3 and isolation layer I

4. Battery sheet layer 5, isolation layer II 6 and glue layer II

7. Glass layer two 41, battery piece 8 and fixing layer one

9. Fixing layer two 80, fixing piece one 801 and dustproof cloth one

90. Second fixing part 901 and second dustproof cloth

Detailed Description

In order to make the objects, technical solutions, and advantages of the present utility model more apparent, the embodiments of the present utility model will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present utility model, are intended to be illustrative only and not limiting of the embodiments of the present utility model, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present utility model.

In the description of the present utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Example 1:

as shown in fig. 1, the present application provides a photovoltaic module, including: the first glass layer 1 is arranged on the outermost layer; the first isolation layer 3 is arranged in the coverage area of the first glass layer 1; the battery piece layer 4 is arranged on the lower end face of the first isolation layer 3; the second isolation layer 5 is arranged on the opposite surface of the other side of the battery piece layer 4; the second glass layer 7 is arranged on the lower end face of the second isolation layer 7; the first glass layer 1, the first isolation layer 3, the battery piece layer 4, the second isolation layer 5 and the second glass layer 7 form a laminated structure.

The first glass layer 1 and the second glass layer 7 are used for protecting the battery piece layer 4, so that the battery piece layer 4 is prevented from being damaged due to impact, the first glass layer 1 and the second glass layer 7 are made of low-iron toughened suede glass, also called white glass, and the glass has very good light transmittance and very high hardness, and can adapt to very large day and night temperature differences and severe weather environments. The light transmittance of the first glass layer 1 and the second glass layer 7 reaches more than 91.5%, and the national performance indexes of the photovoltaic module are met.

As shown in fig. 1, a glue layer 1 and a glue layer 2 are arranged between the glass layer 1 and the isolation layer 3, wherein the glue layer 2 comprises a first glue film, and the first glue film adopts an EVA (Ethylene Vinyl Acetate, ethylene-vinyl acetate copolymer) glue film; and a glue layer II 6 is further arranged between the glass layer II 7 and the isolation layer II 5, the glue layer II 6 comprises a second glue film, and the second glue film adopts EVA (Ethylene Vinyl Acetate, ethylene-vinyl acetate copolymer)/POE (Polyolefin elastomer )/EPE (Expandable Polyethylene, expandable polyethylene)/PVB (Polyvinyl Butyral ) glue films. The adhesive film has the advantages of high transparency, good flexibility, good hot melt adhesion, good melt fluidity, no adhesion at normal temperature, easy cutting, low price and the like.

The battery layer 4 is mainly used for converting light energy into electric energy, as shown in fig. 2, the battery layer 4 includes a plurality of battery pieces 41, and the battery pieces 41 are arranged in an array. The use of parallel combinations between the battery plates 41 greatly reduces the losses that follow.

Further, the first and second spacers 3 and 5 are made of a spacer film, and the ratio between the thickness of the spacer film and the thickness of the battery sheet layer 4 is 1:2, the isolating film can be peeled off; the isolating film material is PET (polyethylene glycol terephthalate, polyethylene terephthalate) or PVC (Polyvinyl chloride ) or PTFE (Poly tetra fluoroethylene, polytetrafluoroethylene), the heat resistance of the isolating film material is good, the isolating film can not be adhered together in the lamination process of the photovoltaic module, and the problem that the welding condition of the welding strip after lamination can not be detected, so that the welding strip is separated from the battery piece can be solved.

Through set up isolation layer one 3 in the middle of battery piece layer 4 and glue layer one 2, set up isolation layer two 5 in the middle of battery piece layer 4 and glue layer two 6, keep apart them for in the lamination process, can not melt the cross-linking between battery piece layer 4 and the glued membrane, battery piece layer 4 can not be wrapped up in the glued membrane. And the isolating film has certain flexibility, so that the problem that the battery piece layer 4 is hidden and cracked can be avoided during lamination, and after lamination, the first isolating layer 3 and the second isolating layer 5 are not bonded, so that the condition of welding strips can be observed by peeling off the isolating film, and the good effect that the welding strips cannot be separated from the battery pieces after lamination is detected.

The using process comprises the following steps: the factory performs spot check, randomly selects the battery strings, and can disassemble the battery strings to laminate the battery strings by using small glass, so that the subsequent welding belt tension test is convenient; laminating the photovoltaic module according to conventional parameters; after lamination, the isolating film is peeled off and the welding strip is observed because the isolating film and the adhesive film are not adhered.

Example 2:

the present embodiment provides a photovoltaic module having the same structural features as embodiment 1.

As shown in fig. 3, a first fixing layer 8 is further arranged between the first glue layer 2 and the first isolation layer 3, and a second fixing layer 9 is further arranged between the second glue layer 6 and the second isolation layer 5; the first fixing layer 8 and the second fixing layer 9 are used for fixing the welding strips, so that the welding strips are prevented from being separated from the battery piece after lamination, the first fixing layer 8 and the second fixing layer 9 are of a net-shaped structure, the glue overflow amount of the adhesive film can be controlled when the adhesive film is bonded with the first glue layer 2 and the second glue layer 6 through the structure, the first isolation layer 3 and the second isolation layer 5 are further prevented from being adhered, and the welding condition of the welding strips after lamination can be detected through the first isolation layer 3 and the second isolation layer 5.

As shown in fig. 4, the first fixing member 80 and the second fixing member 90 (not labeled in the drawing) are disposed at the top and the tail of the first fixing layer 8 and the second fixing layer 9, and the first dust-proof cloth 801 and the second dust-proof cloth 901 (not labeled in the drawing) are fixedly disposed at the head and the tail of the first fixing member 80 and the second fixing member 90, so as to ensure that no foreign matter exists in the assembly while fixing the welding strips.

In the use, ensure that the length of welding area is greater than photovoltaic module's length for the head and the tail of welding area leaks outside, after the lamination, confirm through the position of observing the welding area that the welding area breaks away from, after confirming that the welding area does not break away from photovoltaic module, can change the length of welding area according to photovoltaic module's length, and then reach the welding condition of welding area after detecting the lamination, the welding area can not break away from the better effect of battery piece.

While the foregoing has been described in terms of illustrative embodiments thereof, so that those skilled in the art may appreciate the present application, it is not intended to be limited to the precise embodiments so that others skilled in the art may readily utilize the present application to its various modifications and variations which are within the spirit and scope of the present application as defined and determined by the appended claims.

Claims (10)

1. A photovoltaic module, comprising:

the first glass layer is arranged on the outermost layer;

the first isolation layer is arranged in the coverage area of the first glass layer;

the battery piece layer is arranged on the lower end face of the first isolation layer;

the second isolation layer is arranged on the opposite surface of the other side of the battery piece layer;

the second glass layer is arranged on the lower end face of the second isolation layer;

the first glass layer, the first isolation layer, the battery piece layer, the second isolation layer and the second glass layer form a laminated structure.

2. The photovoltaic module of claim 1, wherein a first glue layer is disposed between the first glass layer and the first spacer layer.

3. The photovoltaic module of claim 2, wherein the first glue layer comprises a first glue film.

4. A photovoltaic module according to claim 3, wherein the first adhesive film is an EVA adhesive film.

5. The photovoltaic module according to claim 1, wherein a second glue layer is disposed between the second separator layer and the second glass layer.

6. The photovoltaic module of claim 5, wherein the second glue layer comprises a second glue film.

7. The photovoltaic module of claim 6, wherein the second adhesive film is EVA/POE/EPE/PVB adhesive film.

8. The photovoltaic module of claim 1, wherein the cell layer comprises a plurality of cells, and wherein the cells are arranged in an array.

9. The photovoltaic module according to claim 1, wherein the first and second separator layers are separator films, and the ratio between the thickness of the separator film and the thickness of the cell layer is 1:2, the isolating film can be peeled off.

10. A photovoltaic module according to claim 9, wherein the separator material is PET or PVC or PTFE.

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