Aluminum profile connecting piece of building integrated photovoltaics (BIPV) daylighting roof

Abstract

The utility model relates to an aluminum profile connecting piece of a building integrated photovoltaics (BIPV) daylighting roof, which is mounted above a rectangular steel beam of the daylighting roof and comprises a bottom plate and a central bulge, and a bolt groove is formed in the central bulge; and an aluminum alloy pressing block is fixedly connected above the central bulge through a stainless steel bolt. The beneficial effects of the utility model are that the construction environment does not have special requirements, the structural form of uniform coating, bonding and fixing of structural adhesive or fixing of customized aluminum alloy fastener bolts in the prior art is cancelled, and the aluminum alloy pressing blocks on the aluminum profile connecting pieces are used to carry out edge pressing on the photovoltaic assemblies on the two sides; and the influence on the photovoltaic module and the module frame is reduced, so that the BIPV daylighting roof forms a power generation roof which is firm, reliable, sealed, waterproof and attractive and elegant in appearance.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic components, and in particular comprises an aluminum profile connector for a BIPV skylight. Background Art

[0002] Currently, the BIPV rooftop PV module fastening method commonly uses structural adhesive applied evenly and fixed with adhesive, or custom aluminum alloy fasteners and bolts. With the continuous innovation and development of PV module materials, the module appearance has evolved from blue-black monocrystalline silicon single-glass modules for single-sided power generation to double-glass modules for bifacial power generation. In recent years, large-area cadmium telluride modules have also been developed. The aluminum profile frame of the module has been optimized from having C-shaped panels on all four sides to only retaining C-shaped panels on the two long sides, while the C-shaped panels on the short sides have been eliminated.

[0003] BIPV skylights directly replace the existing tempered glass with double-sided, double-glass modules or cadmium telluride solar glass. To ensure the safety of the modules when subjected to loads, they are often mounted vertically, with the modules fixed along their long sides. This minimizes the span of the modules along their short sides, resulting in less bending stress and a relatively safer module. If the modules are mounted horizontally, with the clamps fixed to the short side frames, the C-surface is eliminated, leaving the modules held against the frame by only the approximately 10mm-wide aluminum profile clamps. Furthermore, the span of the modules increases by nearly double when mounted horizontally, increasing the bending moment by a factor of four, or a multiple of the square of the span. However, this mounting method has the disadvantage of easily deforming and shifting the modules during typhoons, causing them to become loose and, in severe cases, blown off, resulting in property damage. Furthermore, the bending moment experienced by the modules when mounted horizontally is greater than when mounted vertically, requiring higher material requirements, particularly glass thickness, and consequently increasing module costs and investment. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an aluminum profile connector for a BIPV skylight.

[0005] The aluminum profile connector of the BIPV skylight is installed above the rectangular steel beam of the skylight. The aluminum profile connector includes a bottom plate and a central protrusion, and a bolt groove is provided inside the central protrusion.

[0006] The photovoltaic module edge is installed with a module frame, which is inserted above the base plate on both sides of the central protrusion of the aluminum profile connector. An aluminum alloy pressure block is fixed above the central protrusion by stainless steel bolts. The bottom end of the stainless steel bolt is connected to the bolt groove to fix the aluminum alloy pressure block.

[0007] Preferably, a nut is rotatably provided in the bolt groove, and the bottom end of the stainless steel bolt and the nut in the bolt groove are connected by threads.

[0008] Preferably, the bottom width of the aluminum alloy pressing block is equal to the width of the central protrusion of the aluminum profile connector, both sides of the top of the aluminum alloy pressing block are provided with outwardly extending structures, and a mounting groove for a stainless steel bolt is provided in the center of the top of the aluminum alloy pressing block.

[0009] Preferably, the aluminum alloy pressing block has a structure extending outward on both sides, with a flat lower surface and a sloped upper surface, and the highest point of the slope faces the center of the aluminum alloy pressing block. The depth of the mounting groove on the aluminum alloy pressing block matches the height of the stainless steel bolt head.

[0010] Preferably, an EPDM rubber pad is filled between the bottom of the component frame and the bottom plate of the aluminum profile connector to control the height of the photovoltaic component.

[0011] Preferably, countersunk screw holes are provided at the four corners of the bottom plate of the aluminum profile connector, and the aluminum profile connector is fixedly connected to the rectangular steel beam of the skylight by countersunk screws at the countersunk screw holes.

[0012] The beneficial effects of the utility model are:

[0013] The BIPV photovoltaic skylight is fixed and installed through a new type of aluminum profile connector. There are no special requirements for the construction environment. The structural form of evenly applying structural adhesive for bonding and fixing or using customized aluminum alloy fasteners and bolts to fix in the existing technology is eliminated. Instead, the aluminum alloy pressing blocks on the aluminum profile connector are used to press the photovoltaic modules on both sides, reducing the impact on the photovoltaic modules and module frames, so that the BIPV skylight forms a firm, reliable, sealed and waterproof, and beautiful power generation roof, saving material costs, reducing special requirements such as the environment for applying structural adhesive during construction, improving the safety of module installation and the ease of construction, shortening the construction period, and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front installation of a double-sided double-glass photovoltaic module;

[0015] Figure 2 This is a schematic diagram of the front installation when the photovoltaic module is a cadmium telluride module;

[0016] Figure 3 This is a schematic diagram of the cross-section of the long frame C side of a cadmium telluride photovoltaic module;

[0017] Figure 4 This is a schematic diagram of the cross-section of the long frame C side of a photovoltaic module when the photovoltaic module is a double-sided double-glass module;

[0018] Figure 5 This is a schematic cross-sectional view of the aluminum profile connector of the utility model;

[0019] Figure 6It is a top view schematic diagram of the aluminum profile connector of the present invention.

[0020] Explanation of the reference numerals: rectangular steel beam of the skylight 1, aluminum profile connector 2, photovoltaic module 3, module frame 4, stainless steel bolt 6, aluminum alloy pressure block 7, EPDM rubber pad 8, countersunk screw hole 9. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the following embodiments. The following embodiments are provided solely to facilitate understanding of the present invention. It should be noted that, within the scope of the present invention, modifications may be made by a person skilled in the art without departing from the principles of the present invention. Such improvements and modifications are also within the scope of the claims of the present invention.

[0022] Example 1

[0023] As an example, Figures 1 to 6 As shown, the aluminum profile connector of the BIPV skylight is installed above the rectangular steel beam 1 of the skylight, as shown in FIG. Figure 1 and Figure 2 As shown, the photovoltaic module 3 can be a double-sided double-glass module or a cadmium telluride module.

[0024] The aluminum profile connector 2 includes a base plate and a central protrusion, such as Figure 4 and Figure 6 As shown, a bolt groove is provided inside the central protrusion, and a nut is provided in the bolt groove for rotation.

[0025] like Figure 3 and Figure 4 As shown, a component frame 4 is installed on the edge of the photovoltaic component 3, and the component frame 4 is inserted above the bottom plate on both sides of the central protrusion of the aluminum profile connector 2. An aluminum alloy pressure block 7 is fixedly connected above the central protrusion by a stainless steel bolt 6. The bottom end of the stainless steel bolt 6 and the nut in the bolt groove are threadedly connected, so that the aluminum alloy pressure block 7 is fixed above the central protrusion of the aluminum profile connector 2.

[0026] The aluminum alloy pressing block 7 has a structure extending outward on both sides, with a flat lower surface and a sloped upper surface. The highest point of the slope faces the center of the aluminum alloy pressing block 7. The lower surfaces of the structure extending outward on both sides of the aluminum alloy pressing block 7 are respectively pressed on the component frames 4 of the photovoltaic components 3 on both sides, which has the effect of fixing the photovoltaic components 3, connecting adjacent photovoltaic components 3 and closing the connection seams.

[0027] The bottom width of the aluminum alloy pressing block 7 is equal to the width of the central protrusion of the aluminum profile connector 2. Both sides of the top of the aluminum alloy pressing block 7 are provided with outward extending structures. A mounting groove for the stainless steel bolt 6 is opened in the center of the top of the aluminum alloy pressing block 7. The depth of the mounting groove on the aluminum alloy pressing block 7 matches the height of the screw head of the stainless steel bolt 6.

[0028] Example 2

[0029] As another embodiment, this embodiment 2 proposes, based on the embodiment 1, a more specific aluminum profile connector for a BIPV skylight:

[0030] Countersunk screw holes 9 are provided at the four corners of the bottom plate of the aluminum profile connector 2. The aluminum profile connector 2 is fixedly connected to the skylight rectangular steel beam 1 at the countersunk screw holes 9 by countersunk screws.

[0031] EPDM rubber pads 8 are filled between the bottom of the component frame 4 and the bottom plate of the aluminum profile connector 2 to control the height of the photovoltaic component 3. The ends of the EPDM rubber pads 8 are flush with the edges of the bottom plate of the aluminum profile connector 2. Different components have different frame thicknesses. The thickness of the EPDM rubber pads 8 should be confirmed after determining the component specifications and dimensions.

[0032] After the aluminum profile connectors of this BIPV skylight are installed and fixed to the skylight steel column, the skylight rectangular steel beam 1 is welded and fixed to the steel column according to the design requirements based on the short side size of the photovoltaic module 3 and the size of the aluminum alloy pressure block 7. Specifically, the installation spacing between the two skylight steel beams is required to be high, and they should be positioned and installed as far as possible according to the design size requirements. It is also necessary to determine the module size before installation and positioning. The installation spacing error between the two skylight steel beams is no more than 10cm. Within the 10cm range, the position of the aluminum profile connector 2 on the skylight rectangular steel beam 1 can be adjusted to ensure that the spacing between the two aluminum profile connectors 2 is equal to the short side size of the module and the size of the pressure block.

[0033] The countersunk screw holes used in the aluminum profile connector 2 need to be punched, and a single connector is fixed with four 304 stainless steel countersunk screws. The aluminum profile connector 2 is accurately positioned and screwed to the rectangular steel beam 1 of the skylight.

[0034] For different types of photovoltaic modules3, such as Figure 1 and Figure 2 The figure shows a double-sided double-glass and cadmium telluride module. EPDM rubber pads 8 of varying thickness are bonded and secured to the new aluminum profile connector 2. The long side frame C-side 5 of the photovoltaic module 3 is placed on the EPDM rubber pad 8. Stainless steel bolts 6 are inserted through the mounting slot in the center of the top of the aluminum alloy clamp 7 and into the bolt slot in the center of the new aluminum profile connector 2. After adjusting the precise position of the photovoltaic module 3, the stainless steel bolts 6 are tightened to ensure that the structures on both sides of the aluminum alloy clamp 7 press against the module frame 4 of the photovoltaic module 3. The stainless steel bolts 6 are 304 stainless steel hexagon socket head bolts and require a flat washer, a spring washer, and a nut.

[0035] Finally, the gaps between each photovoltaic module 3 are filled with building sealing foam rods, and then sealed with neutral silicone weather-resistant sealant, so that the BIPV skylight forms a firm, reliable, sealed and waterproof, and beautiful appearance power generation roof.

[0036] It should be noted that the parts in this embodiment that are the same or similar to those in the first embodiment can be referenced to each other and will not be described in detail in this application.

[0037] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Claims

1. A BIPV skylight aluminum connector, characterized in that: Installed above the rectangular steel beam of the skylight, the aluminum profile connector includes a bottom plate and a central protrusion with a bolt slot inside the central protrusion; The photovoltaic module edge is installed with a module frame, which is inserted above the base plate on both sides of the central protrusion of the aluminum profile connector. An aluminum alloy pressure block is fixed above the central protrusion by stainless steel bolts. The bottom end of the stainless steel bolt is connected to the bolt groove to fix the aluminum alloy pressure block.

2. The aluminum profile connector of the BIPV skylight according to claim 1, characterized in that: A nut is rotatably arranged in the bolt groove, and the bottom end of the stainless steel bolt and the nut in the bolt groove are connected through threads.

3. The aluminum profile connector of the BIPV skylight according to claim 1, characterized in that: The bottom width of the aluminum alloy pressing block is equal to the width of the central protrusion of the aluminum profile connector. Both sides of the top of the aluminum alloy pressing block are provided with outwardly extending structures. The center of the top of the aluminum alloy pressing block is provided with an installation groove for a stainless steel bolt.

4. The aluminum profile connector of the BIPV skylight according to claim 3, characterized in that: The aluminum alloy pressing block has a structure extending outward on both sides, with a flat lower surface and a sloped upper surface, and the highest point of the slope faces the center of the aluminum alloy pressing block. The depth of the mounting groove on the aluminum alloy pressing block matches the height of the stainless steel bolt head.

5. The aluminum profile connector of the BIPV skylight according to claim 1, characterized in that: EPDM rubber pads are filled between the bottom of the component frame and the bottom plate of the aluminum profile connector to control the height of the photovoltaic component.

6. The aluminum profile connector of the BIPV skylight according to claim 1, characterized in that: Countersunk screw holes are arranged at the four corners of the bottom plate of the aluminum profile connector. The aluminum profile connector is fixedly connected to the rectangular steel beam of the skylight by countersunk screws at the countersunk screw holes.

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