CN206099885U - Solar modules - Google Patents

Abstract

The utility model discloses a solar assembly, it includes: preceding glass board, back of the body glass board, solar wafer, its between preceding glass board reaches between the back of the body glass board, a printing opacity packaging material layer, its between preceding glass board reaches between the solar wafer, and the terminal box, its install in on the preceding glass board.

Description

Solar modules

technical field

The utility model relates to the technical field of solar photovoltaic power generation, in particular, the utility model relates to a solar component.

Background technique

Over the years, oil and coal have been exploited in large quantities for industrial development. However, in recent years, oil and coal have gradually become exhausted, and excessive carbon emissions have caused environmental pollution, and even destroyed the ozone layer, leading to a trend of increasing global climate temperature year by year, and the earth's ecology is facing a crisis. Therefore, using green energy to save energy and reduce carbon has become one of the main directions of technological development.

Solar energy is an inexhaustible and non-polluting energy. When solving the pollution and shortage problems caused by oil and coal, solar energy has always been the focus of attention. Solar energy is clean and clean, inexhaustible and inexhaustible. In addition, most renewable energy is indirectly converted from solar energy. Therefore, solar energy is the most important and promising renewable resource with great development prospects.

In the industry, solar modules generally use double-glass modules, and the existing double-glass modules have the following structure. The first layer is low-iron tempered glass (front glass plate), and the second layer is EVA (ethylene-vinyl acetate copolymer, ethylene vinyl acetate copolymer) material, the third layer is solar cells, the fourth layer is EVA material, the fifth layer is tempered glass (back glass plate) with the same size as the first layer, and the junction box is bonded to the back glass board.

However, in practical applications, this existing double-glass module has the following problems:

The junction box is bonded to the back glass plate through silica gel. During use, the junction box itself will dissipate heat and be affected by gravity, so the junction box has the risk of falling off.

It is worth noting that the existing junction boxes are all fixed on the back glass plate of the solar module by sticking. In the solar module of the present utility model, the junction box is arranged on the front glass plate of the solar module, and the solar cells are not covered. This configuration can improve the problem of falling off when the junction box and the solar module are not well connected, and is convenient for maintenance and maintenance. Install solar modules.

Utility model content

Aiming at the problems existing in the prior art, the utility model provides a solar module.

According to an embodiment of the utility model, the utility model provides a solar module, which includes: a front glass plate; a back glass plate; a solar cell, which is interposed between the front glass plate and the back glass plate; The light-transmitting first encapsulation material layer is interposed between the front glass plate and the solar cells; and the junction box is installed on the front glass plate without shielding the solar cells.

According to another embodiment of the present invention, the thickness of the front glass plate of the solar module provided by the present invention ranges from 0.5mm to 4.0mm.

According to another embodiment of the present invention, the front glass plate of the solar module provided by the present invention is processed by a glass tempering method, so that the surface stress of the front glass plate is higher than 40 MPa.

According to another embodiment of the utility model, the front glass plate of the solar module provided by the utility model is punched to form a number of holes, and the bus bar is led out from the front glass plate through the holes and connected to the described junction box.

According to another embodiment of the present invention, the diameter of the holes of the solar module provided by the present invention ranges from 10 mm to 16 mm, and the distance between centers of the holes is at least 20 mm.

According to another embodiment of the present utility model, the front glass plate of the solar module provided by the present utility model forms an arc around the periphery of the front glass plate through the way of the incisor groove, and the depth range of the arc is 30 mm. The width of the circular arc ranges from 155 mm to 165 mm, and the bus bar passes through the circular arc to lead out from the front glass plate and connect to the junction box.

According to another embodiment of the present invention, the thickness of the back glass plate of the solar module provided by the present invention ranges from 0.5mm to 6.0mm.

According to another embodiment of the utility model, the back glass plate of the solar module provided by the utility model is processed by a glass tempering method, so that the surface stress of the back glass plate is higher than 40 MPa.

According to another embodiment of the present invention, when the thickness of the back glass plate of the solar module provided by the present invention is greater than 6.0 mm, it does not need to be processed by the glass tempering method.

According to another embodiment of the present invention, the size of the back glass plate of the solar module provided by the present invention is larger than the size of the front glass plate, and the distance between the periphery of the back glass plate and the periphery of the front glass plate is not greater than that of the front glass plate. less than 5mm.

According to another embodiment of the present invention, the surface of the back glass plate of the solar module provided by the present invention has pigment film layers of several colors.

According to another embodiment of the utility model, the junction box of the solar module provided by the utility model is installed at the periphery or the middle position of the front glass plate.

According to another embodiment of the present invention, the front glass plate of the solar module provided by the present invention is light-transmitting tempered glass.

According to another embodiment of the present invention, the material of the front glass plate or the back glass plate of the solar module provided by the present invention is ordinary glass, tempered glass or transparent resin.

According to another embodiment of the present invention, the solar module provided by the present invention includes a second encapsulation material layer between the back glass plate and the solar cells.

According to another embodiment of the present invention, at least one of the first and second packaging material layers of the solar module provided by the present invention contains polyvinyl butyral (PVB), ethylene vinyl acetate (EVA) or transparent high Molecular insulating glue.

To sum up, in the solar module of the present invention, the junction box is arranged on the front glass of the solar module without covering the solar cells. Easy to maintain and install solar modules.

Description of drawings

Fig. 1 is the top view of the solar module of the present utility model; And

Fig. 2 is a partial sectional view of the solar module of the present invention.

[Description of main component symbols]

1 front glass panel

2 The first packaging material layer

2' second layer of encapsulation material

3 solar cells

4 back glass

5 junction box

6 bus bars

7 holes

detailed description

The utility model provides a solar module to solve the above problems. Fig. 1 is a top view of the solar module of the present invention; Fig. 2 is a partial cross-sectional view of the solar module of the present invention. Please refer to FIG. 1 and FIG. 2 at the same time. The key point of the present invention is that by installing the junction box 5 on the front glass plate 1, the risk of the junction box 5 falling off during use can be reduced. In addition, since the size of the front and rear glass is inconsistent (the back glass plate 4 is larger than the front glass plate 1), the impact on the front glass plate 1 during installation is relatively small.

In detail, the utility model provides a solar module, which includes: a front glass plate 1; a back glass plate 4; a solar cell 3, which is interposed between the front glass plate 1 and the back glass plate 4; The light-transmitting first packaging material layer 2 is interposed between the front glass plate 1 and the solar battery sheet 3; and a junction box 5 is installed on the front glass plate 1, wherein the front glass plate 1 is punched through a hole or All crescent grooves are precision-machined so that the junction box 5 is installed on the front glass plate 1 . The junction box 5 can be installed on the periphery or the middle position of the front glass plate 1 without covering the solar cells 3 , and its specific position can be determined according to the outlet position of the actual solar cell 3 typesetting.

One side of the front glass plate 1 is a light incident surface, and sunlight enters the solar cells 3 from the light incident surface of the front glass plate 1 . The solar battery sheet 3 can be any existing solar battery sheet; for example, the solar battery sheet 3 can include a plurality of electrode layers or photoelectric conversion layers for receiving light energy and converting light energy into electrical energy, which will not be repeated here. .

In this embodiment, the front glass plate 1 is tempered glass of 0.5 mm to 4 mm, the back glass plate 4 is tempered glass of 0.5 mm to 6 mm or ordinary glass above 6 mm, and the size of the back glass plate 4 is larger than that of the front glass plate 1 The extra width depends on the size of the installation tool, but the width must be greater than 5mm, so as to facilitate the installation of solar modules and have less impact on the front glass plate 1.

In another embodiment, the material of the front glass plate and/or the back glass plate can be ordinary glass, tempered glass or transparent resin. Regarding the choice of materials, the light transmittance of 2mm ordinary float glass is about 90%, the light transmittance of 1.2mm can reach 91%, and the patterned glass can increase the light transmittance by about 1%. If the anti-reflection film is coated again, the light transmittance can be increased by 2%, so the embossed coated glass can increase the light transmittance by 3% compared with ordinary float glass. Therefore, in order to improve the power generation efficiency of the solar module, in another embodiment, the front glass plate 1 can be tempered glass with embossed coating.

In another embodiment, a second encapsulation material layer 2 ′ may be included between the back glass plate 4 and the solar cells 3 . At least one of the packaging material layers 2, 2' may include (but not limited to) materials such as polyvinyl butyral (PVB), ethylene vinyl acetate (EVA) or transparent polymer insulating glue.

The front glass plate 1 is perforated to form a plurality of holes 7, the diameter of the holes 7 is 10mm to 16mm, and the center distance between the two holes 7 is at least 20mm. In addition, the front glass plate 1 can form an arc (not shown) on the periphery of the front glass plate 1 by cutting the crescent groove. The depth range of the arc is 30mm to 35mm (preferably 35mm), and the width range of the arc 155mm to 165mm (preferably 162mm). In order to install the junction box 5 on the front of the solar module, the bus bar 6 (electrically connected to the solar cells 3 ) is drawn out from the hole 7 or the arc of the front glass plate 1 and connected to the junction box 5 .

The front glass plate 1 and the back glass plate 4 can be processed by a glass tempering method, so that the surface stress of the front glass plate 1 and the back glass plate 4 is higher than 40MPa. Specifically, glass tempering processing methods include physical tempering and chemical tempering. Physical tempering is to form tensile stress on the glass surface through heat treatment to increase the strength of the glass. The surface stress of the glass after physical tempering can reach 40-180MPa; chemical tempering is to change the composition of the glass surface by chemical methods, also to increase the surface Stress, the surface stress of the chemically tempered glass can reach 200-750MPa.

In another embodiment, the surface of the back glass plate 4 can be coated with a colored pigment film layer, such as white, black or blue, so that the solar module can increase the effect of color diversity. In this embodiment, the second packaging material layer 2' must also be transparent.

The utility model has unexpected effects: in the existing components, the junction box is installed on the back of the module (back glass plate), and this structure makes the junction box have the risk of falling off. The utility model avoids the problem that the junction box 5 falls off by installing the junction box 5 on the front of the solar module (on the front glass plate 1); at the same time, the surface of the back glass plate 4 is coated with a pigment film layer with color, so that the solar module can increase Color variety.

The specific embodiment of the utility model is described as above. However, other modifications are still possible. Therefore, those skilled in the art can also make various modifications and embellishments without departing from the spirit of the utility model, and any modifications and retouches still belong to the protection scope defined by the utility model.

Claims (16)

1. a kind of solar components, it is characterised in that the solar components include：

Front glass panel；

Back of the body glass plate；

Solar battery sheet, it is between the front glass panel and the back of the body glass plate；

The encapsulating material layer of printing opacity first, it is between the front glass panel and the solar battery sheet；And

Terminal box, it is installed in the front glass panel, and does not cover the solar battery sheet.

2. solar components as claimed in claim 1, it is characterised in that：The thickness range of the front glass panel be 0.5mm extremely 4.0mm。

3. solar components as claimed in claim 1, it is characterised in that：At the front glass panel Jing glass tempering processing method Reason so that the surface stress of the front glass panel is higher than 40MPa.

4. solar components as claimed in claim 1, it is characterised in that：The front glass panel Jing hole knockout and form some The terminal box is drawn and be connected to hole, busbar through the hole from the front glass panel.

5. solar components as claimed in claim 4, it is characterised in that：The diameter range in the hole be 10mm to 16mm, institute The center distance for stating hole is at least 20mm.

6. solar components as claimed in claim 1, it is characterised in that：Front glass panel Jing cuts crescent mode and in institute The periphery for stating front glass panel forms circular arc, and the depth bounds of the circular arc is 30mm to 35mm, and the width range of the circular arc is The terminal box is drawn and be connected to 155mm to 165mm, busbar through the circular arc from the front glass panel.

7. solar components as claimed in claim 1, it is characterised in that：It is described the back of the body glass plate thickness range be 0.5mm extremely 6.0mm。

8. solar components as claimed in claim 1, it is characterised in that：At the back of the body glass plate Jing glass tempering processing methods Reason so that the surface stress of the back of the body glass plate is higher than 40MPa.

9. solar components as claimed in claim 8, it is characterised in that：When the back of the body sheet thickness is more than more than 6.0mm, Then it is not required to glass tempering processing method described in Jing to process.

10. solar components as claimed in claim 1, it is characterised in that：The size of the back of the body glass plate is more than the front glass The size of glass plate, the periphery of the back of the body glass plate is not less than 5mm with the distance of the periphery of the front glass panel.

11. solar components as claimed in claim 1, it is characterised in that：The surface of the back of the body glass plate has some colors Colorant film.

12. solar components as claimed in claim 1, it is characterised in that：The terminal box is installed on the front glass panel Periphery or centre position.

13. solar components as claimed in claim 1, it is characterised in that：The front glass panel is printing opacity safety glass.

14. solar components as claimed in claim 1, it is characterised in that：The front glass panel or the back of the body glass plate material be Simple glass, safety glass or transparent resin.

15. solar components as claimed in claim 1, it is characterised in that：In the back of the body glass plate and the solar cell The second encapsulating material layer is included between piece.

16. solar components as claimed in claim 15, it is characterised in that：Described first and second encapsulating material layer at least its One of comprising polyvinyl butyral (PVB), ethylene vinyl acetate (EVA) or transparent polymer insulation glue material.