A rooftop photovoltaic panel system

Abstract

This invention relates to a rooftop photovoltaic panel system, comprising a roofing assembly, an integrated photovoltaic structure mounted on the roofing assembly, and a connecting assembly adhered to the outer surface of the roofing assembly. The integrated photovoltaic structure is mounted on the connecting assembly, and a through-ventilation cavity is formed between the integrated photovoltaic structure and the connecting assembly. The through-ventilation direction is front-to-back, and the left-to-right direction is perpendicular to the through-ventilation direction and parallel to the integrated photovoltaic structure. A support plate is mounted on a roofing metal plate of the form of standing seam or edge interlocking, allowing the main waterproof membrane to be fully adhered to the roofing assembly, improving the bonding strength of the integrated photovoltaic structure adhered to the main waterproof membrane, and thus increasing the service life of the rooftop photovoltaic panel system.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic equipment, and specifically relates to a rooftop photovoltaic panel system. Background Technology

[0002] Currently, there are generally two methods for fixing photovoltaic panels to roofs: mechanical fixing and structural adhesive bonding. Mechanical fixing uses screws or bolts to fix the panels to the structural layer below the roof waterproofing layer, which can damage the waterproofing layer and pose a risk of leakage. Structural adhesive bonding can avoid damaging the waterproofing layer, but structural adhesives have a short service life outdoors. Leading domestic brands of structural adhesives only offer a 10-year warranty, meaning that for photovoltaic panels designed for a 25-year lifespan, the adhesive strength cannot be guaranteed for the remaining 15 years. Furthermore, most existing roof structures have undulating metal panels with numerous angles less than 90° between them and the main roof structure. This prevents the waterproofing membrane from adhering tightly to each angle, resulting in a weak bond between the integrated photovoltaic structure and the roof structure, thus reducing the lifespan of the roof photovoltaic panel system. Summary of the Invention

[0003] The purpose of this invention is to provide a rooftop photovoltaic panel system that is easy to install, fits tightly, is easy to ventilate, and has a long service life.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a roof photovoltaic panel system, which includes a roof component, an integrated photovoltaic structure disposed on the roof component, the roof photovoltaic panel system further includes a connecting component laid on the outer surface of the roof component, the integrated photovoltaic structure is installed on the connecting component, and a through heat dissipation cavity is formed between the integrated photovoltaic structure and the connecting component, the through direction being the front-to-back direction, and the direction perpendicular to the through direction and parallel to the integrated photovoltaic structure being the left-to-right direction.

[0005] The optimized roof assembly includes an insulation layer and a roof metal panel disposed on the insulation layer. The roof metal panel includes a panel body and a metal protrusion higher than the panel body. The surface of the metal protrusion itself has an acute or right-angle transition surface and a groove with a larger belly and a smaller opening, or the surface of the metal protrusion and the panel body have an acute or right-angle transition surface and a groove with a larger belly and a smaller opening. The connecting assembly includes a support plate corresponding to the metal protrusion and covering the metal protrusion, and a main waterproof membrane bonded to the support plate and the panel body. The main waterproof membrane bonded to the support plate is a first protruding membrane. The upper surface of the first protruding membrane is flat, and the upper surface of the first protruding membrane under the same integrated photovoltaic structure is flush.

[0006] Furthermore, the integrated photovoltaic structure includes a secondary waterproof membrane and several photovoltaic modules. The secondary waterproof membrane has a regular bonding area, and the several photovoltaic modules are disposed within the bonding area. The leftmost photovoltaic module is aligned with the left edge of the bonding area, and the rightmost photovoltaic module is aligned with the right edge of the bonding area. The left edge of the bonding area is aligned with the leftmost side of the upper surface of the leftmost first raised membrane, and the right edge of the bonding area is aligned with the rightmost side of the upper surface of the rightmost first raised membrane.

[0007] Furthermore, the secondary waterproof membrane at the left edge of the integrated photovoltaic structure is attached to the left slope of the leftmost first raised membrane, and the secondary waterproof membrane at the right edge of the integrated photovoltaic structure is attached to the right slope of the rightmost first raised membrane.

[0008] In an optimized configuration, the roof assembly includes a profiled steel sheet disposed below the insulation layer, and the roof assembly includes roof purlins disposed below the profiled steel sheet.

[0009] The optimized support plate includes a main support plate that covers the metal protrusion and has a trapezoidal shape that is narrower at the top and wider at the bottom, and wing plates on both sides of the lower end of the main support plate. The wing plates are fixedly connected to the plate body by fasteners.

[0010] In an optimized configuration, the main waterproof membrane is fully laid on the support plate and the plate body.

[0011] In an optimized configuration, the edges of the secondary waterproof membrane are integrally welded to the primary waterproof membrane using hot air welding.

[0012] Furthermore, the roofing assembly includes an insulation layer and roof metal panels spaced apart on the insulation layer. The roof metal panel includes a panel body and metal protrusions higher than the panel body. The included angles of the transition surfaces of the metal protrusions themselves are all obtuse angles, and the included angles of their transition surfaces with the panel body are all obtuse angles. The connecting assembly is a main waterproof membrane fully adhered to the roof metal panel.

[0013] In the optimized configuration, the main waterproof membrane bonded to the metal protrusion is a second protruding membrane. The integrated photovoltaic structure includes a secondary waterproof membrane and several photovoltaic modules. The secondary waterproof membrane has a regular bonding area. Several photovoltaic modules are disposed within the bonding area, with the leftmost photovoltaic module aligned with the left edge of the bonding area and the rightmost photovoltaic module aligned with the right edge of the bonding area. The left edge of the bonding area is aligned with the leftmost side of the upper surface of the leftmost second protruding membrane, and the right edge of the bonding area is aligned with the rightmost side of the upper surface of the rightmost second protruding membrane.

[0014] Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art: the support plate is covered on the roof metal plate in the form of standing seam or standing seam interlocking, so that the main waterproof membrane can be fully adhered to the roof metal plate and the support plate, thereby improving the bonding strength of the integrated photovoltaic structure adhered to the main waterproof membrane, thus extending the service life of the system. In addition, a through heat dissipation cavity is formed between the integrated photovoltaic structure and the connecting components, which improves the heat dissipation effect of the roof photovoltaic panel system and further extends the service life of the roof photovoltaic panel system. Attached Figure Description

[0015] Appendix Figure 1 This is a top view of the rooftop photovoltaic panel system in Example 1;

[0016] Appendix Figure 2 This is a front view of the rooftop photovoltaic panel system in Example 1;

[0017] Appendix Figure 3 For the appendix Figure 2 A partial view at point A in the middle;

[0018] Appendix Figure 4 This is a front view of the rooftop photovoltaic panel system in Example 2;

[0019] Appendix Figure 5 For the appendix Figure 4 A partial view at point B in the middle;

[0020] Appendix Figure 6 This is a schematic diagram of the metal protrusion in Example 3. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0022] Example 1

[0023] like Figure 1-3As shown, the rooftop photovoltaic panel system includes a roof component 1, an integrated photovoltaic structure 2 mounted on the roof component 1, and a connecting component 3 that is attached to the outer surface of the roof component 1. The integrated photovoltaic structure 2 is mounted on the connecting component 3, and a through heat dissipation cavity 4 is formed between the integrated photovoltaic structure 2 and the connecting component 3. The through direction is the front-to-back direction, and the direction perpendicular to the through direction and parallel to the integrated photovoltaic structure 2 is the left-to-right direction. The roofing component 1 includes an insulation layer 11 and a roof metal panel 12 disposed on the insulation layer 11. The roof metal panel 12 includes a panel body 121 and a metal protrusion 122 higher than the panel body 121. The surface of the metal protrusion 122 has an acute or right angle transition surface and a groove with a large belly and a small opening, or the surface of the metal protrusion 122 and the panel body 121 have an acute or right angle transition surface and a groove with a large belly and a small opening. The connecting component 3 includes a support plate 31 corresponding to the metal protrusion 122 and covering the metal protrusion 122, and a main waterproof membrane 32 bonded to the support plate 31 and the panel body 121. The main waterproof membrane 32 bonded to the support plate 31 is a first protruding membrane 321. The upper surface of the first protruding membrane 321 is flat, and the upper surface of the first protruding membrane 321 under the same integrated photovoltaic structure 2 is flush. The integrated photovoltaic structure 2 includes a secondary waterproof membrane 21 and several photovoltaic modules 22. The secondary waterproof membrane 21 has a regular bonding area, and the photovoltaic modules 22 are disposed within the bonding area. The leftmost photovoltaic module 22 is aligned with the left edge of the bonding area, and the rightmost photovoltaic module 22 is aligned with the right edge of the bonding area. The left edge of the bonding area is aligned with the leftmost side of the upper surface of the leftmost first protruding membrane 321, and the right edge of the bonding area is aligned with the rightmost side of the upper surface of the rightmost first protruding membrane 321. The secondary waterproof membrane 21 at the left edge of the integrated photovoltaic structure 2 is bonded to the left slope of the leftmost first protruding membrane 321, and the secondary waterproof membrane 21 at the right edge of the integrated photovoltaic structure 2 is bonded to the right slope of the rightmost first protruding membrane 321.

[0024] The roof assembly includes a profiled steel sheet 13 disposed below the insulation layer 11. The roof assembly also includes roof purlins 14 disposed below the profiled steel sheet 13.

[0025] The support plate 31 includes a main support plate 311 that is trapezoidal in shape, narrower at the top and wider at the bottom, covering the metal protrusion 122, and wing plates 312 located on both sides of the lower end of the main support plate 311. The wing plates 312 are fixedly connected to the plate body 121 by fasteners 5, which can be self-tapping screws. The main waterproof membrane 32 is integrally formed on the support plate 31 and the plate body 121. The edge of the secondary waterproof membrane 21 is integrally welded to the main waterproof membrane 32 by hot air welding.

[0026] Example 2

[0027] like Figure 4-5 As shown, the rooftop photovoltaic panel system includes a roof component 1, an integrated photovoltaic structure 2 mounted on the roof component 1, and a connecting component 3 that is attached to the outer surface of the roof component 1. The integrated photovoltaic structure 2 is mounted on the connecting component 3, and a through heat dissipation cavity 4 is formed between the integrated photovoltaic structure 2 and the connecting component 3. The through direction is the front-to-back direction, and the direction perpendicular to the through direction and parallel to the integrated photovoltaic structure 2 is the left-to-right direction. The roof component 1 includes an insulation layer 11 and a roof metal panel 12 disposed on the insulation layer 11. The roof metal panel 12 includes a panel body 121 and a metal protrusion 122 higher than the panel body 121. The included angles of the transition surfaces of the metal protrusion 122 itself are all obtuse angles, and the included angles of the transition surfaces of the metal protrusion 122 and the panel body 121 are all obtuse angles. The connecting component 3 is a main waterproof membrane 32 fully bonded to the roof metal panel 12. The main waterproof membrane 32 can be fully laid on the roof metal panel 12 after the roof metal panel 12 is installed on the construction site, or the main waterproof membrane 32 and the roof metal panel 12 are made of TMP board, that is, the main waterproof membrane 32 is integrated into the roof metal panel 12 in the workshop. The main waterproof membrane 32 bonded to the metal protrusion 122 is a second protruding membrane 322. The upper end surface of the second protruding membrane 322 is flat, and the upper end surface of the second protruding membrane 322 under the same integrated photovoltaic structure 2 is flush. The integrated photovoltaic structure 2 includes a secondary waterproof membrane 21 and several photovoltaic modules 22. The secondary waterproof membrane 21 has a regular bonding area, and the photovoltaic modules 22 are disposed within the bonding area. The leftmost photovoltaic module 22 is aligned with the left edge of the bonding area, and the rightmost photovoltaic module 22 is aligned with the right edge of the bonding area. The left edge of the bonding area is aligned with the leftmost side of the upper surface of the leftmost second protruding membrane 322, and the right edge of the bonding area is aligned with the rightmost side of the upper surface of the rightmost second protruding membrane 322. The secondary waterproof membrane 21 at the left edge of the integrated photovoltaic structure 2 is bonded to the left slope of the leftmost second protruding membrane 322, and the secondary waterproof membrane 21 at the right edge of the integrated photovoltaic structure 2 is bonded to the right slope of the rightmost second protruding membrane 322.

[0028] The roof assembly includes a profiled steel sheet 13 disposed below the insulation layer 11. The roof assembly also includes roof purlins 14 disposed below the profiled steel sheet 13.

[0029] The main waterproof membrane 32 is integrally formed on the support plate 31 and the plate body 121. The edge of the secondary waterproof membrane 21 is welded to the main waterproof membrane 32 by hot air welding.

[0030] Example 3

[0031] like Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that the metal protrusion 122 is formed by curling the overlapping part of the roof metal panel 12.

[0032] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A rooftop photovoltaic panel system, comprising a roofing module and an integrated photovoltaic structure disposed on the roofing module, characterized in that: The rooftop photovoltaic panel system also includes a connecting component that is attached to the outer surface of the roof component. The integrated photovoltaic structure is installed on the connecting component, and a through heat dissipation cavity is formed between the integrated photovoltaic structure and the connecting component. The through direction is the front-to-back direction, and the direction perpendicular to the through direction and parallel to the integrated photovoltaic structure is the left-to-right direction. The roofing assembly includes an insulation layer and a roof metal panel disposed on the insulation layer. The roof metal panel includes a panel body and a metal protrusion higher than the panel body. The surface of the metal protrusion itself has an acute or right-angle transition surface and a groove with a larger belly and a smaller opening, or the surface of the metal protrusion and the panel body have an acute or right-angle transition surface and a groove with a larger belly and a smaller opening. The connecting assembly includes a support plate corresponding to the metal protrusion and covering the metal protrusion, and a main waterproof membrane bonded to the support plate and the panel body. The main waterproof membrane bonded to the support plate is a first protruding membrane. The upper surface of the first protruding membrane is flat, and the upper surface of the first protruding membrane under the same integrated photovoltaic structure is flush. The integrated photovoltaic structure includes a secondary waterproof membrane and several photovoltaic modules. The secondary waterproof membrane has a regular bonding area, and the several photovoltaic modules are disposed in the bonding area. The leftmost photovoltaic module is aligned with the left edge of the bonding area, and the rightmost photovoltaic module is aligned with the right edge of the bonding area. The left edge of the bonding area is aligned with the leftmost side of the upper surface of the leftmost first protruding membrane, and the right edge of the bonding area is aligned with the rightmost side of the upper surface of the rightmost first protruding membrane. The support plate includes a main support plate that covers the metal protrusion and has a trapezoidal shape that is narrower at the top and wider at the bottom, and wing plates that are provided on both sides of the lower end of the main support plate. The wing plates are fixedly connected to the plate body by fasteners.

2. The rooftop photovoltaic panel system according to claim 1, characterized in that: The secondary waterproof membrane at the left edge of the integrated photovoltaic structure is attached to the left slope of the first raised membrane on the far left, and the secondary waterproof membrane at the right edge of the integrated photovoltaic structure is attached to the right slope of the first raised membrane on the far right.

3. The rooftop photovoltaic panel system according to claim 1, characterized in that: The roofing assembly includes a profiled steel sheet disposed below the insulation layer, and the roofing assembly includes roof purlins disposed below the profiled steel sheet.

4. The rooftop photovoltaic panel system according to claim 1, characterized in that: The main waterproof membrane is fully laid on the support plate and the plate body.

5. The rooftop photovoltaic panel system according to claim 1, characterized in that: The edges of the secondary waterproof membrane are welded together with the primary waterproof membrane using hot air welding.

6. The rooftop photovoltaic panel system according to claim 1, characterized in that: The roofing assembly includes an insulation layer and roof metal panels spaced apart on the insulation layer. The roof metal panel includes a panel body and metal protrusions higher than the panel body. The included angles of the transition surfaces of the metal protrusions themselves are all obtuse angles, and the included angles of their transition surfaces with the panel body are all obtuse angles. The connecting assembly is a main waterproof membrane fully adhered to the roof metal panel.

7. The rooftop photovoltaic panel system according to claim 6, characterized in that: The main waterproof membrane bonded to the metal protrusion is a second protruding membrane. The integrated photovoltaic structure includes a secondary waterproof membrane and several photovoltaic modules. The secondary waterproof membrane has a regular bonding area. Several photovoltaic modules are disposed in the bonding area, with the leftmost photovoltaic module aligned with the left edge of the bonding area and the rightmost photovoltaic module aligned with the right edge of the bonding area. The left edge of the bonding area is aligned with the leftmost side of the upper surface of the leftmost second protruding membrane, and the right edge of the bonding area is aligned with the rightmost side of the upper surface of the rightmost second protruding membrane.

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