CN205050850U - Colorful photovoltaic assembly - Google Patents

Abstract

The utility model discloses a color photovoltaic component, which is used to improve the color selectivity of the photovoltaic component, so that the photovoltaic component presents a better visual effect, thereby better matching with buildings. The color photovoltaic module includes a transparent front plate, a first transparent adhesive layer, a solar battery sheet group, a second transparent adhesive layer, a back plate arranged in sequence from the front side to the back side, and the transparent front plate, the first The transparent adhesive layer, the solar battery sheet group, the second transparent adhesive layer and the frame on the side of the back plate, wherein the solar battery sheet group includes a plurality of solar battery sheets connected into a circuit by soldering ribbons, and the soldering ribbons include soldering ribbons The body and the first characteristic color film layer located on the front surface of the ribbon body. Through the first transparent adhesive layer and the transparent front sheet, the ribbon with the first characteristic color can be seen, compared with the prior art, the selectivity of the ribbon color has been improved, so that the photovoltaic module presents a better appearance visual effects.

Description

A color photovoltaic module

technical field

The utility model relates to the technical field of photovoltaics, in particular to a color photovoltaic assembly.

Background technique

When non-renewable energy sources such as electricity, coal, and oil are running out frequently, and energy issues have increasingly become a bottleneck restricting the development of the international society and economy, more and more countries have begun to implement the "Sunshine Plan" to develop solar energy resources and seek new impetus for economic development. Some high-level nuclear research institutions in Europe have also begun to turn to renewable energy. Driven by the huge potential of the international photovoltaic market, the solar cell manufacturing industries of various countries are scrambling to invest huge sums of money and expand production in order to compete for a place.

With the deteriorating environment and the continuous increase of smog, energy conservation and emission reduction have become the focus of national development, and solar power generation projects have gradually become mainstream. At present, there are more and more building-integrated photovoltaic projects, and many products combining photovoltaic modules and buildings have been paid attention to, such as photovoltaic tiles and photovoltaic curtain walls.

Photovoltaic modules usually include a transparent front plate, a first transparent adhesive layer, a solar cell group, a second transparent adhesive layer, a back plate, and a surrounding side of the structure composed of the aforementioned components, which are arranged in sequence from the front side to the back side. The frame, wherein the solar battery sheet group includes a plurality of solar battery sheets connected by soldering ribbons. Due to the material properties of the ribbon, it usually appears silver in color.

In the prior art, the overall display of the photovoltaic module is dark blue, and the silver ribbon can be clearly seen through the transparent front plate and the first transparent adhesive layer. The dark blue photovoltaic module and the silver ribbon are closely related to the appearance of many buildings. The unique design style is not easy to match, which affects the overall appearance of the building. Therefore, how to improve the color selectivity of the photovoltaic module and make the photovoltaic module present a better visual effect is a technical problem to be solved urgently by those skilled in the art.

Utility model content

The purpose of the utility model is to provide a color photovoltaic module to improve the selectivity of the color of the photovoltaic module, so that the photovoltaic module presents a better visual effect, thereby better matching with the building.

The color photovoltaic module provided by the embodiment of the utility model includes: a transparent front plate, a first transparent adhesive layer, a solar cell group, a second transparent adhesive layer, a back plate, and a set on the transparent front plate, the first transparent adhesive layer, the solar battery sheet group, the second transparent adhesive layer and the frame on the side of the back sheet, wherein the solar battery sheet group includes a plurality of solar battery sheets connected by welding ribbons, so The welding ribbon includes a welding ribbon body and a first characteristic color film layer located on the front side surface of the welding ribbon body.

Preferably, the ribbon body is a tinned copper ribbon body or a tinned copper ribbon body.

Specifically, the first characteristic color film layer is a polymer film with the first characteristic color; or, the first characteristic color film layer is a heat-treated film layer with the first characteristic color.

Preferably, the front surface of the frame has a second characteristic color film layer.

Preferably, the backplane is a backplane with a third characteristic color, or the front surface of the backplane has a film layer of a third characteristic color.

Preferably, the first transparent adhesive layer is a transparent adhesive layer having a fourth characteristic color, or the first transparent adhesive layer is doped with particles of a fourth characteristic color.

The second transparent adhesive layer is a transparent adhesive layer with a fifth characteristic color, or the second transparent adhesive layer is doped with particles of a fifth characteristic color.

Optionally, the first transparent adhesive layer is an ethylene-vinyl acetate copolymer adhesive layer or a polyvinyl butyral adhesive layer, with a thickness of 0.3-2 mm;

The second transparent adhesive layer is an ethylene-vinyl acetate copolymer adhesive layer or a polyvinyl butyral adhesive layer, with a thickness of 0.3-2 mm.

Preferably, the colors on the front surfaces of the first transparent adhesive layer, the second transparent adhesive layer, the welding strip, the back plate and the frame are all the same;

Or, among the first transparent adhesive layer, the second transparent adhesive layer, the soldering tape, the back plate and the front side surface of the frame, at least two of them have different colors.

Optionally, the transparent front plate is a tempered patterned glass front plate, an ultra-clear tempered patterned glass front plate or a coated tempered patterned glass front plate; the thickness of the transparent front plate is 1-10 mm.

Optionally, the solar cells of the solar cell group are monocrystalline silicon cells, polycrystalline silicon cells or silicon heterojunction cells.

In the color photovoltaic module of the embodiment of the utility model, through the first transparent adhesive layer and the transparent front plate, the ribbon with the first characteristic color can be seen. Compared with the prior art, the selectivity of the color of the ribbon has been improved. Improve; In addition, the color photovoltaic assembly of the present utility model can also choose to adopt the frame with the second characteristic color, the back plate with the third characteristic color, the first transparent adhesive layer with the fourth characteristic color and the fifth characteristic color The second transparent adhesive layer, which greatly improves the color selectivity of the photovoltaic module, so that the photovoltaic module can present a better visual effect, and then it is easy to match the style of the building.

Description of drawings

Fig. 1 is a schematic diagram of the photovoltaic module layer structure of the utility model embodiment;

Fig. 2 is the schematic diagram of the photovoltaic module of the embodiment of the utility model;

FIG. 3 is an enlarged schematic diagram of point A in FIG. 2 .

Explanation of reference signs:

1- Transparent front sheet 2- First transparent adhesive layer

3-welding ribbon 4-solar cell

5-Second transparent adhesive layer 6-Back sheet

7-border

detailed description

In order to improve the selectivity of the color of the photovoltaic module and make the photovoltaic module present a better visual effect, so as to better match the building, the embodiment of the utility model provides a color photovoltaic module. In order to make the purpose, technical solutions and advantages of the utility model clearer, the following examples are given to further describe the utility model in detail.

As shown in Figures 1 to 3, the embodiment of the present utility model provides a color photovoltaic module, including: a transparent front plate 1, a first transparent adhesive layer 2, a solar cell group arranged in sequence from the front side to the back side , the second transparent adhesive layer 5, the back plate 6, and the frame 7 arranged on the transparent front plate, the first transparent adhesive layer, the solar cell sheet group, the second transparent adhesive layer and the side of the back plate, wherein the solar cell The sheet group includes a plurality of solar cell sheets 4, and the plurality of solar cell sheets 4 are connected into a circuit through a soldering ribbon 3. The soldering ribbon 3 includes a soldering ribbon body and a first characteristic color film layer located on the front surface of the soldering ribbon body.

In the technical solution of the embodiment of the utility model, the front side refers to the side relatively far away from the building, and the back side refers to the side relatively close to the building.

Optionally, the ribbon body is a tin-plated copper ribbon body or a tin-coated copper ribbon body. The type of the first characteristic color film layer is not limited, for example, it can be a polymer film with the first characteristic color, or the first characteristic color film layer can be a heat-treated film layer with the first characteristic color, and the heat-treated film layer can be passed through Surface heat treatment is carried out on the welding ribbon body to form on the front side surface of the welding ribbon body.

In the technical solution of the embodiment of the utility model, the solar cells are arranged in a matrix. Optionally, the solar cells of the solar cell group are monocrystalline silicon cells, polycrystalline silicon cells or silicon heterojunction cells. It is preferable to use silicon heterojunction cells with high photoelectric conversion efficiency, and the photoelectric conversion efficiency can reach more than 21.5%. The specific specification of the solar cells is not limited, for example, 156mm*156mm or 125mm*125mm.

As shown in Figure 2, after the solar cells are welded by ribbons to form a solar cell group, the vacuum laminator will transparent front plate, the first transparent adhesive layer, solar cell group, the second transparent adhesive layer, and The backsheet is laminated, and finally framed and packaged to form a complete photovoltaic module.

In yet another embodiment of the present invention, the front surface of the frame 7 of the color photovoltaic module has a second characteristic color film layer. The type of the second characteristic color film layer is not limited, it can be an electroplating film layer with a second characteristic color formed by electroplating the surface of the frame, or an oxidation layer with a second characteristic color formed by oxidation treatment on the surface of the frame. The film layer, or a polymer film with a second characteristic color pasted on the surface of the frame. The color photovoltaic module with the frame of the second characteristic color can present a better visual effect than the prior art, and greatly improves the aesthetics of the photovoltaic module.

In another embodiment of the present invention, the first transparent adhesive layer 2 of the colored photovoltaic module is a transparent adhesive layer with a fourth characteristic color, or the first transparent adhesive layer is doped with particles of a fourth characteristic color ; Similarly, the second transparent adhesive layer 5 is a transparent adhesive layer with a fifth characteristic color, or the second transparent adhesive layer is doped with fifth characteristic color particles.

In this embodiment, the material of the first transparent adhesive layer 2 is not limited, for example, it can be a highly permeable ethylene-vinyl acetate (EVA) adhesive layer, ordinary ethylene-vinyl acetate ( EVA) adhesive layer or polyvinyl butyral (PolyVinylButyral, referred to as PVB) adhesive layer. The thickness of the first transparent adhesive layer is preferably 0.3 to 2 mm; similarly, the material of the second transparent adhesive layer 5 is not limited, for example, it can be a high cut-off ethylene-vinyl acetate copolymer (Ethylene-vinylAcetate, referred to as EVA) adhesive Lamination layer, ordinary ethylene-vinyl acetate copolymer (referred to as EVA) adhesive layer or polyvinyl butyral (PolyVinylButyral, referred to as PVB) adhesive layer. Like the first transparent adhesive layer, the thickness of the second transparent adhesive layer is preferably 0.3-2 mm.

In a preferred embodiment of the present utility model, the light transmittance of the first transparent adhesive layer 2 is greater than 93%, such as a highly transparent ethylene-vinyl acetate copolymer (PVB) adhesive layer, which can improve the solar cell sheet. The photoelectric conversion efficiency of the group. The light transmittance of the second transparent adhesive layer 5 is less than 90%, such as a high cut-off ethylene-vinyl acetate copolymer (PVB) adhesive layer, which has a certain blocking effect on ultraviolet rays in sunlight and can reduce ultraviolet rays. Effects on backplane 6 color and performance. Through the transparent front sheet 1, the photovoltaic module can present the fourth characteristic color of the first transparent adhesive layer 2, while the fifth characteristic color of the second transparent adhesive layer 5 can be seen through the area of the photovoltaic module where no solar cells are arranged presented. The color photovoltaic module using the first transparent adhesive layer with the fourth characteristic color and the second transparent adhesive layer with the fifth characteristic color can present a better visual effect than the existing technology, making the photovoltaic module present a high-end artistic beauty.

In yet another embodiment of the present utility model, the backboard of the colored photovoltaic module can display a third characteristic color, and the way of displaying the third characteristic color is not limited. For example, the backboard can be a backboard with a third characteristic color, that is, The raw material for producing the backboard has a third characteristic color, or the front side surface of the backboard has a third characteristic color film layer by coating the front side surface of the backboard with a coating having the third characteristic color. After penetrating through the second transparent adhesive layer, the third characteristic color of the back sheet can be displayed through the gaps of the solar battery sheet group. The color photovoltaic module using the back plate with the third characteristic color can present a better visual effect than the prior art, and greatly improves the aesthetics of the photovoltaic module.

Optionally, the backboard is a polyvinyl fluoride composite film (TedlarPetTedlar, TPT for short) backboard or a thermoplastic elastomer (Thermoplastic Elastomer, TPE for short) backboard.

In the technical solutions of the above embodiments, the specific colors of the first characteristic color to the fifth characteristic color are not limited, and the first characteristic color to the fifth characteristic color may all be the same, or at least two characteristic colors may be different.

In the technical solutions of the various embodiments of the present invention, the material of the transparent front plate 1 is not limited, for example, it can be a tempered embossed glass front plate, an ultra-clear tempered embossed glass front plate or a coated tempered embossed glass front plate. Various types of transparent front sheets can improve the mechanical strength of solar cells and have better weather resistance. In addition, according to specific needs, the transparent front plate 1 can also use a common embossed glass front plate. The thickness of the transparent front plate 1 is preferably 1-10 mm.

In the color photovoltaic module of the embodiment of the utility model, through the first transparent adhesive layer and the transparent front plate, the ribbon with the first characteristic color can be seen. Compared with the prior art, the selectivity of the color of the ribbon has been improved. Improve; In addition, the color photovoltaic assembly of the present utility model can also choose to adopt the frame with the second characteristic color, the back plate with the third characteristic color, the first transparent adhesive layer with the fourth characteristic color and the fifth characteristic color The second transparent adhesive layer, which greatly improves the color selectivity of the photovoltaic module, so that the photovoltaic module can present a better visual effect, and then it is easy to match the style of the building.

Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.

Claims (10)

1. A color photovoltaic module, characterized in that it includes sequentially arranged from the front side to the back side: a transparent front plate, a first transparent adhesive layer, a solar cell group, a second transparent adhesive layer, a back plate, and Set on the transparent front plate, the first transparent adhesive layer, the solar battery sheet group, the second transparent adhesive layer and the frame on the side of the back plate, wherein the solar battery sheet group includes a plurality of solar cells connected into a circuit by soldering strips In the battery sheet, the ribbon includes a ribbon body and a first characteristic color film layer located on the front surface of the ribbon body. 2 . The color photovoltaic module according to claim 1 , wherein the ribbon body is a tinned copper ribbon body or a tinned copper ribbon body. 3 . 3. The color photovoltaic module according to claim 1, characterized in that, the first characteristic color film layer is a polymer film with the first characteristic color; or, the first characteristic color film layer is a film layer with the first characteristic color Heat-treated coating in characteristic colours. 4. The color photovoltaic module according to claim 1, wherein the front side surface of the frame has a second characteristic color film layer. 5 . The color photovoltaic module according to claim 1 , wherein the backplane is a backplane having a third characteristic color, or the front surface of the backplane has a film layer of a third characteristic color. 5 . 6. The color photovoltaic module according to claim 1, characterized in that, The first transparent adhesive layer is a transparent adhesive layer with a fourth characteristic color, or the first transparent adhesive layer is doped with particles of a fourth characteristic color; The second transparent adhesive layer is a transparent adhesive layer with a fifth characteristic color, or the second transparent adhesive layer is doped with particles of a fifth characteristic color. 7. The color photovoltaic module according to claim 6, characterized in that, The first transparent adhesive layer is an ethylene-vinyl acetate copolymer adhesive layer or a polyvinyl butyral adhesive layer, with a thickness of 0.3-2 mm; The second transparent adhesive layer is an ethylene-vinyl acetate copolymer adhesive layer or a polyvinyl butyral adhesive layer, with a thickness of 0.3-2 mm. 8. The color photovoltaic module according to any one of claims 1-7, characterized in that, The colors of the front surfaces of the first transparent adhesive layer, the second transparent adhesive layer, the welding strip, the back plate and the frame are all the same; Alternatively, at least two of the first transparent adhesive layer, the second transparent adhesive layer, the soldering tape, the back plate and the front surface of the frame have different colors. 9. The color photovoltaic module according to claim 1, wherein the transparent front plate is a tempered patterned glass front plate, an ultra-clear tempered patterned glass front plate or a coated tempered patterned glass front plate; the transparent The thickness of the front plate is 1-10 mm. 10 . The color photovoltaic module according to claim 1 , wherein the solar cells of the solar cell group are monocrystalline silicon cells, polycrystalline silicon cells or silicon heterojunction cells. 11 .