CN205792425U - A kind of low-rise building photovoltaic cornice structure - Google Patents

Abstract

The utility model belongs to the technical field of building components, and specifically discloses a low-rise building photovoltaic cornice structure, which includes a cornice body made of double-sided glass film solar cells and a support frame body for supporting the cornice body, the cornice body It is fixed on the supporting frame body by adjusting the pressing block, and the supporting frame body is provided with wire grooves and drainage grooves, and the lightning protection grounding system is also connected to the supporting frame body. The overhanging eaves structure described in the utility model is not only a photovoltaic power generation unit, but also a building component. On the premise of ensuring safety and reliability, the overhanging eaves structure is simplified to the greatest extent, and the possibility of photovoltaic building integration of the overhanging eaves structure is realized. In addition, during installation, the distance between the supporting structures can be determined according to the module parameters and the design area, and then the double-glass modules can be fixed in sequence with the pressing blocks, which can be installed in door openings with a width of more than 3 meters and on the eaves of low-rise buildings with 2 to 4 floors. Easy to install, practical and beautiful.

Description

Photovoltaic cornice structure of a low-rise building

technical field

The utility model belongs to the technical field of building components, in particular to a low-rise building photovoltaic overhanging eaves structure.

Background technique

As an ideal and clean renewable energy, solar energy has been increasingly valued by countries all over the world. Under the background of advocating green energy conservation, building integrated photovoltaics has developed rapidly in recent years. As people realize that the increase in building energy consumption has adverse effects on the environment and energy, the use of solar energy in the field of energy conservation has gradually become a concern. The advantages of photovoltaic building integration are increasingly prominent in the development of energy-saving buildings today. Integrating photovoltaic systems into buildings can achieve resource conservation and comprehensive utilization, efficiently utilize natural resources, and reduce environmental loads. Innovative architectural design for the BIPV system can not only show its unique advantages, but also increase the beauty of the building.

The current photovoltaic overhangs are all installed as a whole, and there are certain shortcomings in the installation method and the components used, which reduces the overall efficiency and reliability of the system. In addition, the installation is inconvenient, the maintenance process is difficult, and the maintenance cost is high.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and specifically disclose a low-rise building photovoltaic overhanging eaves structure, which has the advantages of reliable photovoltaic overhanging eaves structure, good weak light effect of the system, convenient installation, and simple maintenance.

In order to achieve the above-mentioned technical purpose, the utility model is realized according to the following technical solutions:

A low-rise building photovoltaic overhanging eaves system described in the utility model includes an overhanging eaves body made of double-sided glass film solar cells and a support frame for supporting the overhanging eaves body, and the overhanging eaves body is fixed on the On the support frame body, the support frame body is provided with a confluence groove, a drainage groove, and a lightning protection grounding system is connected to the support frame body. A lightning protection grounding system is also connected to the support frame body.

As a further improvement of the above technology, the supporting frame body is of modular design, which includes at least two main beams and at least two supporting columns, and the main beams are connected by I-shaped structural steel purlins by welding. Integer multiples of the length and width of the solar cell, and the suspended end of the main beam is fixedly connected to the supporting steel column.

As a further improvement of the above-mentioned technology, the supporting frame body is coated with alkyd enamel paint for anti-rust and fire-proof design.

In the present invention, the inner side of the main girder and the purlin are provided with a confluence groove, and a confluence cable is provided in the confluence groove, and the confluence cable is electrically connected with the solar cell.

In the utility model, the adjusting pressure block is made of aluminum alloy, and EPDA rubber is used for shock absorption inside, the depth of force is ≥30mm, and the length of force is ≥300mm. Usually, a single photovoltaic cell is fixed with two adjustment blocks on each side. Compared with the glass grip used in common installation methods, the adjustment block can effectively reduce the hidden cracks of the battery caused by wind pressure and improve the reliability of the system. sex.

In the utility model, the battery material used in the double-sided glass thin film solar cell can be CIGS copper indium gallium selenium thin film battery or amorphous, amorphous microcrystalline and its laminated back electrode light-transmitting battery, all of which adopt borderless double glass structure with a hydrophobic structure or coating on its front surface.

The first type: the double-sided glass thin-film solar cell, the battery material used is CIGS copper indium gallium selenium thin film battery adopts frameless double-sided glass structure, light weight and beautiful, low cost, and the fire rating of the crystalline silicon module is A. The CIGS copper indium gallium selenide thin-film battery is packaged with PVB material, and its good impact resistance reduces the phenomenon of cracks in the battery sheet; it has better adhesion, and can be used when the component is impacted and broken or the glass explodes. Effectively avoid safety accidents caused by fragments and residues. The battery is made of ultra-clear float glass, PVB, copper indium gallium selenide, PVB, and tempered glass. In solar cell components, the distribution area is between 40% and 60%. It has the characteristics of good long-wave response, strong weak light effect, no light-induced attenuation and hot spots, and the battery distribution area is between 40% and 60%. The transmittance is high, which is conducive to lighting; the battery generates less heat and the temperature is low; beautiful.

The second type: the amorphous or amorphous microcrystalline laminated back electrode light-transmitting cell is packaged with PVB material, which has better adhesion, and can effectively avoid the damage caused by debris when the component is impacted and broken or the glass self-explodes. Safety accidents caused by residues. The battery is made of transparent conductive glass, PVB, amorphous silicon/amorphous microcrystalline silicon, TCO, and tempered glass. The light transmittance of the battery is between 20% and 30%. , and it has the characteristics of good weak light response, long absorption band, and good high temperature performance.

Compared with the prior art, the beneficial effects of the utility model are:

(1) The photovoltaic cornice structure described in the utility model is not only a photovoltaic power generation unit, but also a building component. On the premise of ensuring safety and reliability, the structure is simplified to the greatest extent, and the photovoltaic building integration is realized. The component parameters and the design area determine the distance between the supporting structures, and then the double-glass components can be fixed in turn by using the adjusting block, which is convenient to install, practical and beautiful;

(2) The photovoltaic overhanging eaves structure described in the utility model has the advantages of high reliability, high system efficiency, and simple maintenance, and can be widely installed on door openings with a width of more than 3 meters and on the eaves of low-rise buildings with 2 to 4 floors. To meet the high quality needs of customers.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in detail:

Fig. 1 is the structure schematic diagram of low-rise building photovoltaic overhanging eaves described in the utility model;

Fig. 2 is the top view of the partial unit in above-mentioned Fig. 1;

Fig. 3 is a structural schematic diagram of the regulating briquetting block in the utility model.

detailed description

As shown in Figure 1 and Figure 2, a low-rise building photovoltaic cornice system described in the present invention includes a cornice body 5 made of double-sided glass film solar cells and a support frame for supporting the cornice body 5, The overhanging eaves body 5 is fixed on the support frame body by adjusting the pressure block 4, and the support frame body is provided with a confluence groove 6 and a drainage groove, and the support frame body is also connected with a lightning protection grounding system.

The support frame body is of modular design, which includes at least two main beams 1 and at least two supporting steel columns 3, and the main beams 1 and the main beams 1 are welded and connected by I-shaped structural steel purlins 2, and the distance is taken as the sun The integral multiple of the length and width of the battery is convenient for solar battery installation, suitable for low-rise buildings, simple in structure and high in reliability. It can be seen from the figure that the suspended end of the main girder 1 is fixedly connected with the supporting steel column 3, and the supporting frame body is coated with alkyd enamel paint for anti-rust and fire prevention design, which has a good anti-rust and fire prevention effect.

In the utility model, the inner side of the main beam 1 and the inner side of the purlin 2 are provided with a converging groove 6, and a converging cable is arranged in the converging groove 6, and the converging cable is electrically connected with the solar cell, specifically the solar cell After the junction box of the battery is drawn out, it is connected in series to the bus 7 through the confluence tank 6. This method is convenient for installation and wiring, and is safe and reliable.

As shown in FIG. 3 , the adjusting pressure block 4 is made of aluminum alloy, and there is EPDA rubber shock absorber in it, the stress depth is ≥30mm, and the stress length is ≥300mm. Usually, two adjustable pressing blocks 4 are used to fix each side of a single photovoltaic cell. Compared with the glass grip used in common installation methods, the adjusting pressing block 4 can effectively reduce the hidden cracks of the battery caused by wind pressure and improve the system performance. reliability. In addition, different components can adjust the position and quantity of the pressing blocks 4 according to their structural stability. The utility model deepens the stress depth and length of the pressing blocks to ensure that the double-sided glass components meet the mechanical parameters such as wind pressure.

In the utility model, as the double-sided glass thin-film solar cell of the overhanging eaves body 5, the battery material used can be a CIGS copper indium gallium selenium thin film battery, or an amorphous, amorphous and microcrystalline laminated back electrode light-transmitting battery. All of these structures adopt a frameless double-sided glass structure, and the front surface is a hydrophobic structure or coating.

The two different structures are described in detail below:

The first type: the double-sided glass thin-film solar cell, the battery material used is CIGS copper indium gallium selenium thin-film battery or amorphous, amorphous microcrystalline and its laminated back electrode light-transmitting battery, all of which adopt a frameless double-sided glass structure , light and beautiful, lower cost, and the fire rating of crystalline silicon components is A. The CIGS copper indium gallium selenide thin-film battery is packaged with PVB material, and its good impact resistance reduces the phenomenon of cracks in the battery sheet; it has better adhesion, and can be used when the component is impacted and broken or the glass explodes. Effectively avoid safety accidents caused by fragments and residues. The battery is made of ultra-clear float glass, PVB, copper indium gallium selenide, PVB, and tempered glass. In solar cell components, the distribution area is between 40% and 60%. It has the characteristics of good long-wave response, strong weak light effect, no light-induced attenuation and hot spots, and the battery distribution area is between 40% and 60%. The transmittance is high, which is conducive to lighting; the battery generates less heat and the temperature is low; beautiful.

The second type: the amorphous or amorphous microcrystalline laminated back electrode light-transmitting cell is packaged with PVB material, which has better adhesion, and can effectively avoid the damage caused by debris when the component is impacted and broken or the glass self-explodes. Safety accidents caused by residues. The battery is made of transparent conductive glass, PVB, amorphous silicon/amorphous microcrystalline silicon, TCO, and tempered glass. The light transmittance of the battery is between 20% and 30%. , and it has the characteristics of good weak light response, long absorption band, and good high temperature performance.

In the utility model, the double-sided glass thin-film solar cells forming the overhanging eaves body 5 are closely arranged, and the gaps are sealed with waterproof sealant, which is waterproof and dustproof.

The utility model is not only a photovoltaic power generation unit, but also a building component. On the premise of ensuring safety and reliability, the utility model simplifies the overhanging eaves structure to the greatest extent, and realizes the possibility of photovoltaic building integration with the overhanging eaves structure. In addition, during installation, the distance between the supporting structures can be determined according to the module parameters and the design area, and then the double-glass modules can be fixed in sequence with the pressing blocks, which can be installed in door openings with a width of more than 3 meters and on the eaves of low-rise buildings with 2 to 4 floors. Easy to install, practical and beautiful.

The utility model is not limited to the above-mentioned embodiments, and any changes or modifications to the utility model do not depart from the spirit and scope of the utility model, if these changes and modifications belong to the claims of the utility model and within the equivalent technical scope, Then the utility model also means to include these changes and modifications.

Claims (8)

1. a low-rise building photovoltaic cornices system, it is characterised in that: include being corniced this by double-sided glass thin film solar cell Body and for supporting the supporting frame of body of cornicing, described in the body that cornices be fixed on supporting frame by regulation briquetting, described Supporting frame is provided with collecting tray, rhone, and support frame as described above body is also associated with lightning protection earthing system.

Low-rise building photovoltaic the most according to claim 1 cornices system, it is characterised in that: support frame as described above body is modularity Design, it includes at least two girders and at least two support columns, is welded by I-shaped structure steel purlin bar between described girder and girder Being connected, distance takes the integral multiple of solar cell length and width, and the free end of described girder is fixing with brace steel post to be connected.

Low-rise building photovoltaic the most according to claim 1 and 2 cornices system, it is characterised in that: support frame as described above body is all coated with Butolic acid enamel paint does antirust fireproof design.

Low-rise building photovoltaic the most according to claim 2 cornices system, it is characterised in that: inside described girder and in purlin Side is equipped with collecting tray, is provided with, in described collecting tray, the cable that confluxes, described in the cable that confluxes connect with solar cell electricity.

Low-rise building photovoltaic the most according to claim 1 cornices system, it is characterised in that: described regulation briquetting is aluminium alloy Material is made, and has EPDA rubber shock-absorbing, the stress degree of depth >=30mm, stressed length >=300mm in it.

Low-rise building photovoltaic the most according to claim 1 cornices system, it is characterised in that: the described double-sided glass thin film sun Battery, battery material used is CIGS copper indium gallium selenide film battery or amorphous, amorphous microcrystalline lamination back electrode photovoltaic cell, all adopts By Rimless double-sided glass structure, and its front surface is hydrophobic structure or coating.

Low-rise building photovoltaic the most according to claim 6 cornices system, it is characterised in that: CIGS CIGS used is thin Film battery utilizes PVB material to be packaged, and this hull cell is by ultra-white float glass, PVB, CIGS, PVB and safety glass Carrying out laminating packaging successively after lamination to form, and CIGS is distributed in solar module in the form of sheets, distribution area exists Between 40%～60%.

Low-rise building photovoltaic the most according to claim 6 cornices system, it is characterised in that: amorphous used or amorphous microcrystalline Lamination back electrode photovoltaic cell utilizes PVB material to be packaged, and battery is by transparent conducting glass, PVB, non-crystalline silicon/amorphous microcrystalline Silicon, TCO, safety glass lamination successively carries out laminating packaging and forms, and battery light transmittance is between 20%～30%.