CN205070925U - Photovoltaic module and photovoltaic curtain wall with heat preservation function - Google Patents

Abstract

The utility model discloses a photovoltaic module and photovoltaic curtain wall with heat preservation function for photovoltaic module has electricity generation and heat retaining function simultaneously, and simplifies photovoltaic module's construction installation. Photovoltaic module is including the front bezel that sets gradually, first bond line, solar wafer group, second bond line and heat preservation backplate, the heat preservation backplate is connected with the skin. The photovoltaic module of this structure is applied to photovoltaic curtain wall, can carry out solar energy power generation and can play the heat preservation effect to the building, compares prior art, and photovoltaic module need not the support mounting to photovoltaic curtain wall's construction installation be can simplify, manual work and material cost are reduced.

Description

A photovoltaic module and photovoltaic curtain wall with thermal insulation function

technical field

The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic module and a photovoltaic curtain wall with heat preservation function.

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.

In the prior art, the photovoltaic curtain wall is usually installed in the following structural form: a bracket is drilled on the outside of the thermal insulation backboard of the building, and the photovoltaic module is hung on the bracket. Its technical defect is that the installation of the thermal insulation backplane and the photovoltaic module is carried out separately, the construction steps are cumbersome, and the cost of labor and raw materials is high.

Utility model content

The purpose of the embodiment of the utility model is to provide a photovoltaic module and a photovoltaic curtain wall with heat preservation function. The photovoltaic module integrates photovoltaic power generation and energy saving and heat preservation functions, and can simplify the construction and installation of the photovoltaic curtain wall and reduce labor and raw material costs.

The embodiment of the utility model provides a photovoltaic module with heat preservation function, which includes a front plate, a first adhesive layer, a solar battery sheet group, a second adhesive layer and a heat preservation back plate arranged in sequence, and the heat preservation back plate and the heat preservation back plate Building facade connections.

Preferably, the photovoltaic module further includes a junction box arranged on the side end surface of the thermal insulation backboard.

Preferably, the thickness of the junction box is not greater than the sum of the thicknesses of the front plate, the first adhesive layer, the solar battery sheet group, the second adhesive layer and the thermal insulation back plate.

Preferably, embossing is provided on the side of the thermal insulation backboard close to the exterior wall of the building.

Optionally, the thermal insulation backboard is cement foam thermal insulation backboard, glass foam thermal insulation backboard, glass wool thermal insulation backboard, polyurethane foam thermal insulation backboard, phenolic resin foam thermal insulation backboard or polystyrene foam thermal insulation backboard Any one; the thickness of the thermal insulation backboard is 10-100 mm.

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

Preferably, the light transmittance of the first adhesive layer is greater than 93%, and the light transmittance of the second adhesive layer is less than 90%.

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

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

In the technical solution of the utility model embodiment, the photovoltaic module includes a front panel, a first adhesive layer, a solar battery sheet group, a second adhesive layer, and a thermal insulation backboard arranged in sequence, wherein the thermal insulation backplane is in contact with the outer wall of the building connect. The photovoltaic module of this structure is applied to the photovoltaic curtain wall, which can generate solar power and have a thermal insulation effect on the building. Compared with the existing technology, the photovoltaic module does not need to be installed with brackets, which can simplify the construction and installation of the photovoltaic curtain wall and reduce labor and raw material costs. .

The embodiment of the utility model also provides a photovoltaic curtain wall, comprising a plurality of photovoltaic modules as described in any one of the foregoing technical solutions. The photovoltaic curtain wall can perform solar power generation and heat preservation for buildings, and has simple construction and installation, and low labor and raw material costs.

Description of drawings

Fig. 1 is a schematic diagram of a photovoltaic module according to an embodiment of the present invention;

Fig. 2 is a side view of the photovoltaic module close to the outer wall of the building according to an embodiment of the present invention.

Reference signs:

1- Front panel

2- First adhesive layer

3-Solar cell group

4-Second adhesive layer

5-Insulation backboard

6- cement mortar

7- Building exterior walls

8-junction box

detailed description

In order to integrate photovoltaic power generation and energy saving and heat preservation functions, simplify the construction and installation of photovoltaic curtain walls, and reduce labor and raw material costs, embodiments of the utility model provide a photovoltaic module and a photovoltaic curtain wall with heat preservation functions. 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 Figure 1, the embodiment of the utility model provides a photovoltaic module with thermal insulation function, which includes a front plate 1, a first adhesive layer 2, a solar cell group 3, a second adhesive layer 4 and The thermal insulation backboard 5 is connected with the outer wall 7 of the building.

In this embodiment, the front sheet 1 , the first adhesive layer 2 , the solar battery sheet group 3 , the second adhesive layer 4 and the thermal insulation back sheet 5 are arranged in sequence. Wherein, the solar cell group 3 includes a plurality of solar cells arranged in a matrix and connected to form a circuit by soldering ribbons. Optionally, the solar cells of the solar cell group 3 are monocrystalline silicon cells, polycrystalline silicon cells or silicon heterojunction solar cells. Silicon heterojunction solar cells with high photoelectric conversion efficiency are preferably used, 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.

Typically, a photovoltaic module also includes a junction box. Please refer to FIGS. 1 and 2 , in a preferred embodiment of the present invention, the junction box 8 is arranged on the side end surface of the thermal insulation backboard 5 . Further, the thickness t of the junction box 8 is not greater than the sum T of the thicknesses of the front plate 1 , the first adhesive layer 2 , the solar battery sheet group 3 , the second adhesive layer 4 and the thermal insulation back plate 5 .

Specifically, as shown in Figure 2, the junction box 8 can be bonded to the side end faces of the above-mentioned multiple layer structures through a single-component glue or a two-component glue formed by mixing two different component glues, which is convenient for circuit wiring. , the installation and subsequent maintenance of the junction box 8 are also relatively convenient. In addition, this design can directly fix the thermal insulation backboard 5 to the outer wall of the building, so that the connection area between it and the outer wall of the building can be maximized, thereby improving the installation strength of the photovoltaic module and avoiding the hole punching in the prior art. , installation bracket, hanging and other installation steps, simplifying the construction process.

The photovoltaic module provided by this embodiment is applied to a photovoltaic curtain wall, which can generate solar power and can keep the building warm. Compared with the prior art, the photovoltaic curtain wall integrates solar power generation and heat preservation functions, and the junction box is arranged on the side. The installation strength is greatly improved, and since there is no need for bracket installation, the construction and installation of the photovoltaic curtain wall can be simplified, and the cost of labor and raw materials can be reduced.

Please continue to refer to FIG. 1 and FIG. 2 , the thermal insulation backboard 5 can specifically be connected to the building exterior wall 7 through cement mortar 6 or glue. Preferably, embossing is provided on the side of the thermal insulation backboard 5 close to the building exterior wall 7 . The thermal insulation backboard 5 can play the role of building thermal insulation, and also has the effect of beautiful wall. The side of the thermal insulation backboard 5 combined with the second adhesive layer 4 can be a smooth surface or a rough surface; the side of the thermal insulation backboard 5 close to the building exterior wall 7 is provided with embossing, such as a protruding pattern , as shown in Figure 2, this can increase the bonding area between the thermal insulation backboard 5 and the cement mortar 6 or glue, thereby making the combination of the two more firm.

Optionally, the insulation backboard 5 is cement foam insulation backboard, glass foam insulation backboard, glass wool insulation backboard, polyurethane foam insulation backboard, phenolic resin foam insulation backboard or polystyrene foam insulation backboard. At least one, the insulation backboard can be laminated by a vacuum laminator. The thickness of the thermal insulation backboard 5 is preferably 10-100 mm.

Optionally, the front plate 1 is any one of tempered patterned glass front plate, ultra-clear tempered patterned glass front plate or coated tempered patterned glass front plate. Excellent mechanical strength and good weather resistance. In addition, according to specific needs, the front plate 1 can also use a common embossed glass front plate. The thickness of the front plate 1 is preferably 1-10 mm.

In a preferred embodiment of the present invention, the light transmittance of the first adhesive layer 2 is greater than 93%, which can improve the photoelectric conversion efficiency of the solar cells. The light transmittance of the second adhesive layer 4 is less than 90%, which has a certain blocking effect on ultraviolet rays in sunlight, and can reduce the influence of ultraviolet rays on the color and performance of the thermal insulation backboard.

Optionally, the first adhesive layer 2 is an ethylene-vinyl acetate copolymer adhesive layer or a polyvinyl butyral adhesive layer with a thickness of 0.3 to 2 mm; the second adhesive layer 4 is an ethylene-vinyl acetate copolymer adhesive layer Material adhesive layer or polyvinyl butyral adhesive layer, the thickness is 0.3 ~ 2 mm.

In actual construction, cement mortar or glue can be applied on the back side of the thermal insulation backboard of the photovoltaic module, and then attached to the outer wall of the building. The construction method is simple, and the cost of labor and raw materials is low.

The embodiment of the utility model also provides a photovoltaic curtain wall, including a plurality of photovoltaic modules according to any one of the foregoing technical solutions. The photovoltaic curtain wall can perform solar power generation and heat preservation for buildings, and has simple construction and installation, and low labor and raw material costs.

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 (9)

1. A photovoltaic module with thermal insulation function, it is characterized in that, comprises the front plate that is arranged in sequence, the first bonding layer, solar cell sheet group, the second bonding layer and thermal insulation backboard, described thermal insulation backboard and building External wall connection; The photovoltaic module also includes a junction box arranged on the side end surface of the thermal insulation backboard. 2. The photovoltaic module according to claim 1, wherein the thickness of the junction box is not greater than that of the front plate, the first adhesive layer, the solar battery sheet group, the second adhesive layer and the thermal insulation back plate. sum of thicknesses. 3. The photovoltaic module according to claim 1, characterized in that embossing is arranged on the side of the thermal insulation backboard close to the outer wall of the building. 4. The photovoltaic module as claimed in claim 1, characterized in that, The insulation backboard is any one of cement foam insulation backboard, glass foam insulation backboard, glass wool insulation backboard, polyurethane foam insulation backboard, phenolic resin foam insulation backboard or polystyrene foam insulation backboard ; The thickness of the thermal insulation backboard is 10-100 mm. 5. The photovoltaic module according to claim 1, wherein the front plate is any one of 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 front plate is 1-10 mm. 6. The photovoltaic module according to claim 1, wherein the light transmittance of the first adhesive layer is greater than 93%, and the light transmittance of the second adhesive layer is less than 90%. 7. The photovoltaic module according to claim 6, characterized in that, The first 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 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 photovoltaic module according to any one of claims 1-7, wherein the solar cells of the solar cell group are monocrystalline silicon cells, polycrystalline silicon cells or silicon heterojunction solar cells. 9. A photovoltaic curtain wall, characterized in that it comprises a plurality of photovoltaic modules according to any one of claims 1-8.