Photovoltaic synergistic flat-to-slope roof power station

Abstract

The utility model discloses a photovoltaic synergistic flat-to-slope roof power station, which belongs to the field of photovoltaic technology and comprises a photovoltaic support, a slope structure is arranged at the top of the photovoltaic support, a closed enclosure structure is arranged on the side face of the photovoltaic support, a plurality of double-sided photovoltaic assemblies are arranged on the slope structure, and light-transmitting windows are arranged among the double-sided photovoltaic assemblies. The light-transmitting window is provided with a lighting tile, a sealing piece is arranged between the lighting tile and the adjacent double-sided photovoltaic module, and the closed enclosure structure is a light-transmitting structure. The central area of the inner side of the photovoltaic support can effectively receive sunlight, so that the illumination intensity of the back surface of the double-sided assembly is increased, and the power generation efficiency of the back surface of the double-sided assembly is improved.

Description

[Technical Field]

[0001] This utility model belongs to the field of photovoltaic technology, specifically relating to a rooftop photovoltaic power station. [Background Technology]

[0002] Currently, photovoltaic (PV) brackets installed on conventional flat roofs are generally ordinary PV brackets, which are not waterproof. Existing technology also offers upgrades to flat-to-slope roof bracket solutions, which add waterproofing by sealing the bracket's perimeter with waterproof material and creating storage space beneath it. However, using ordinary sheet metal or iron sheets to seal the bracket's perimeter results in darkness inside the bracket, negatively impacting the back-side power generation efficiency of the bifacial PV modules. Specifically, sealing the bracket's perimeter with ordinary sheet metal or iron sheets leads to insufficient light inside the bracket, preventing the bifacial modules from fully generating their power potential. [Utility Model Content]

[0003] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a photovoltaic efficiency-enhancing flat-to-sloping roof power station, which solves the problem that the existing brackets do not provide enough light on the inside, and cannot fully realize the power generation potential of bifacial photovoltaic modules.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A photovoltaic (PV) efficiency-enhancing rooftop power station for converting flat roofs to pitched roofs includes a PV support structure. The top of the PV support structure has a sloping structure, and the sides have a closed enclosure structure. The sloping structure is equipped with several bifacial PV modules, and light-transmitting windows are provided between the bifacial PV modules. Light-transmitting tiles are installed in the light-transmitting windows, and sealing elements are provided between the light-transmitting tiles and adjacent bifacial PV modules. The closed enclosure structure is a light-transmitting structure.

[0006] Preferably, the sealing element includes a first connecting strip disposed on both longitudinal sides of the light-transmitting tile. The first connecting strip is provided with a first sealing groove that is sealed to the longitudinal side of the light-transmitting tile and a second sealing groove that is sealed to the frame of the adjacent double-sided photovoltaic module.

[0007] Preferably, the first sealing groove is provided with a corrugated structure that cooperates with the corrugations on the light-transmitting tile; and / or, the first sealing groove is higher than the second sealing groove, and the light-transmitting tile is higher than the bifacial photovoltaic module.

[0008] Preferably, the sealing element further includes a second connecting strip disposed on both sides of the translucent tile. The second connecting strip is provided with a third sealing groove that is sealed to the translucent side of the translucent tile and a fourth sealing groove that is sealed to the frame of the adjacent double-sided photovoltaic module.

[0009] Preferably, the first sealing groove, the second sealing groove, the third sealing groove and the fourth sealing groove are provided with a waterproof layer on their inner sides.

[0010] Preferably, a tongue-and-groove structure is provided between the first connecting strip and the second connecting strip.

[0011] Preferably, the ramp structure includes several crossbeams arranged side by side along the longitudinal direction, and a support is provided between the light-transmitting tile and the crossbeams.

[0012] Preferably, the support member has a locking part that engages with the crossbeam, and the support member has a support part that supports the skylight tiles.

[0013] Preferably, the support portion includes two support wings disposed on both longitudinal sides of the upper part of the support member.

[0014] Preferably, the enclosed enclosure structure is equipped with skylights.

[0015] The present invention adopts the above technical solution and has the following beneficial effects:

[0016] 1. First, optimize the enclosed structure around the photovoltaic support frame by adopting a light-transmitting structure. This allows sunlight to penetrate the inner side of the photovoltaic support frame through the light-transmitting structure, resulting in better lighting performance. Second, to prevent the photovoltaic array area from being too large and causing the central area inside the photovoltaic support frame to receive insufficient sunlight, a reasonable array arrangement is adopted. This involves setting light-transmitting windows between several bifacial photovoltaic modules in the photovoltaic array, and installing light-transmitting tiles in the light-transmitting windows. Through the reasonable arrangement of the light-transmitting windows, a certain amount of light is ensured to enter the inner side of the support frame, allowing the inner area of ​​the photovoltaic support frame to receive sunlight more evenly. Even the central area inside the photovoltaic support frame can effectively receive sunlight, thereby increasing the light intensity on the back of the bifacial modules and improving the power generation efficiency on the back of the bifacial modules.

[0017] Furthermore, replacing some photovoltaic modules with transparent translucent roofing sheets does not reduce the waterproof performance of the support system, because there are seals between the translucent sheets and adjacent bifacial photovoltaic modules, which can achieve a more reliable waterproof effect. The sealed connection also facilitates the installation and removal of the translucent sheets. After removal, the light-transmitting windows serve as maintenance windows, making it easy to maintain and inspect the modules.

[0018] In addition, the use of skylights makes the support system more flexible in design, allowing for customized designs based on specific needs and site conditions.

[0019] 2. A first connecting strip is provided between the light-transmitting tile and the longitudinally adjacent double-sided photovoltaic module, and a second connecting strip is provided between the light-transmitting tile and the transversely adjacent double-sided photovoltaic module. The first connecting strip has a first sealing groove that is sealed to the longitudinal side of the light-transmitting tile and a second sealing groove that is sealed to the frame of the adjacent double-sided photovoltaic module. The second connecting strip has a third sealing groove that is sealed to the transverse side of the light-transmitting tile and a fourth sealing groove that is sealed to the frame of the adjacent double-sided photovoltaic module. This achieves a sealed and waterproof connection between the light-transmitting tile and the surrounding double-sided photovoltaic modules. The sealing groove structure also facilitates the installation and disassembly of the light-transmitting tile.

[0020] 3. To address the corrugated nature of the skylight tiles, the first sealing groove features a corrugated structure that mates with the corrugations on the skylight tile, ensuring a proper fit and reliable seal. Since the skylight tiles are higher than the bifacial photovoltaic modules, installation and removal of the skylight tiles are convenient.

[0021] 4. Since the first, second, third, and fourth sealing slots have waterproof layers on their inner sides, the sealing and waterproofing effect between the light-transmitting tile and the surrounding double-sided photovoltaic modules can be guaranteed.

[0022] 5. Because the first connecting strip and the second connecting strip have a tongue and groove structure, the first connecting strip and the second connecting strip are connected in a closed manner, which facilitates the sealing and waterproofing between the light-transmitting tile and the double-sided photovoltaic module on all four sides.

[0023] 6. A support is provided between the skylight and the crossbeam to prevent the skylight from deforming when the span is large. The support has a locking part that engages with the crossbeam, so fasteners are not required. The support has a support part that supports the skylight, including two support wings on the upper longitudinal sides of the support, which provide reliable support for the skylight.

[0024] 7. The enclosed structure is equipped with transparent light-transmitting tiles, which can seal the north, south and east sides of the photovoltaic support frame with transparent light-transmitting tiles to form a whole. This not only forms an enclosed space inside the support frame, but also does not affect the light transmission inside the support frame.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0026] The utility model will be further described below with reference to the accompanying drawings:

[0027] Figure 1 This is a side view of a photovoltaic-enhanced rooftop power station in one embodiment;

[0028] Figure 2 This is a partial top view of one embodiment of a photovoltaic-enhanced rooftop power station;

[0029] Figure 3 This is a schematic diagram of light incidence and emission in one embodiment of a photovoltaic-enhanced rooftop power station;

[0030] Figure 4 This is a schematic diagram of the connection structure between the light-transmitting tile and the adjacent bifacial photovoltaic module through a sealing element.

[0031] Figure 5 This is a schematic diagram of the structure of the first connecting strip;

[0032] Figure 6 This is a schematic diagram of the structure of the first connecting strip;

[0033] Figure 7 This is a schematic diagram of the second connecting strip;

[0034] Figure 8 This is a schematic diagram of the second connecting strip;

[0035] Figure 9 This is a structural schematic diagram of the support component;

[0036] Figure 10 This is a structural schematic diagram of the support component;

[0037] Figure 11 This is a schematic diagram of the installation structure of the skylight;

[0038] Figure 12 This is a schematic diagram of the installation structure of a bifacial photovoltaic module;

[0039] Reference numerals: 1. Photovoltaic bracket; 11. Crossbeam; 12. Pressure plate assembly; 121. Pressure plate bolt; 122. Fixing plate; 123. Support column; 13. Enclosed enclosure structure; 14. Photovoltaic array; 2. Bifacial photovoltaic module; 21. Light-transmitting tile; 22. First connecting strip; 23. First sealing groove; 231. Second sealing groove; 232. Second connecting strip; 24. Third sealing groove; 241. Fourth sealing groove; 242. Tongue and groove joint; 243. Support member; 25. Engaging part; 251. Support part; 252.

Detailed Implementation Methods

[0040] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0041] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0042] The terminology used in this invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "inner," "outer," "longitudinal," and "lateral," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0045] Based on existing technologies, the principle of bifacial photovoltaic (PV) power generation mainly utilizes the photovoltaic effect of photovoltaic cells to generate electricity by capturing solar radiation. The design of bifacial PV modules allows them to capture solar radiation from both the front and back sides simultaneously, thereby improving power generation efficiency. Compared to monofacial PV modules, bifacial PV modules can capture more solar radiation energy under good lighting conditions, thus increasing power generation. Furthermore, bifacial PV modules can better utilize solar energy resources even when facing weaker sunlight, making them suitable for use in environments with uneven lighting.

[0046] However, in the existing technology, the flat-to-slope rooftop photovoltaic support system uses waterproof materials to seal the support around the perimeter, preventing sunlight from entering and adversely affecting the power generation efficiency of the back side of the bifacial photovoltaic modules.

[0047] To address the challenge of installing photovoltaic (PV) brackets on flat roofs while maintaining waterproofing, providing the storage space farmers desire, and improving the power generation efficiency of the back of the modules. (Refer to...) Figures 1 to 12As shown, a photovoltaic (PV) rooftop power station includes a PV support frame 1. The top of the PV support frame has a sloping structure, and the sides have a closed enclosure structure 14. A PV array 2 is mounted on the sloping structure. The PV array 2 includes several bifacial PV modules 21. Light-transmitting windows are provided between the several bifacial PV modules 21. Light-transmitting tiles 22 are installed in the light-transmitting windows. A sealing element is provided between the light-transmitting tiles 22 and the adjacent bifacial PV modules 21. The closed enclosure structure is a light-transmitting structure.

[0048] The technical solution of the above implementation method firstly optimizes the enclosed structure around the photovoltaic support by adopting a light-transmitting structure. This allows sunlight to penetrate into the inner side of the photovoltaic support through the light-transmitting structure, resulting in better lighting effects while maintaining the existing enclosed structure. Secondly, to prevent the photovoltaic array area from being too large and causing the central area inside the photovoltaic support to have difficulty receiving sunlight, a reasonable array arrangement is adopted. Specifically, light-transmitting windows are set between several bifacial photovoltaic modules in the photovoltaic array, and light-transmitting tiles are installed in the light-transmitting windows. Through the reasonable arrangement of the light-transmitting windows, a certain amount of light is ensured to enter the inner side of the support, so that the inner area of ​​the photovoltaic support receives sunlight more evenly. Even the central area inside the photovoltaic support can effectively receive sunlight, thereby increasing the light intensity on the back of the bifacial modules and improving the power generation efficiency on the back of the bifacial modules.

[0049] Furthermore, replacing some photovoltaic modules with transparent translucent roofing sheets does not reduce the waterproof performance of the support system, because there are seals between the translucent sheets and adjacent bifacial photovoltaic modules, which can achieve a more reliable waterproof effect. The sealed connection also facilitates the installation and removal of the translucent sheets. After removal, the light-transmitting windows serve as maintenance windows, making it easy to maintain and inspect the modules.

[0050] With a light transmittance of up to 85%, the use of fiberglass translucent roofing sheets allows for greater flexibility in the design of support systems, enabling customization based on specific needs and site conditions. Fiberglass translucent roofing sheets are the preferred choice due to their advantages such as corrosion resistance, aging resistance, impact resistance, low cost, energy efficiency, environmental friendliness, good light transmission, flame retardancy, long-lasting performance, and a wide range of colors.

[0051] Specifically, the sealing element includes first connecting strips 23 disposed on both longitudinal sides of the skylight tile. Each first connecting strip 23 has a first sealing groove 231 for sealing connection with the longitudinal side of the skylight tile and a second sealing groove 232 for sealing connection with the frame of the adjacent double-sided photovoltaic module. The sealing element also includes second connecting strips 24 disposed on both transverse sides of the skylight tile. Each second connecting strip 24 has a third sealing groove 241 for sealing connection with the transverse side of the skylight tile and a fourth sealing groove 242 for sealing connection with the frame of the adjacent double-sided photovoltaic module. This achieves a waterproof seal between the skylight tile and the surrounding double-sided photovoltaic modules, and the sealing groove structure also facilitates the installation and removal of the skylight tile.

[0052] Furthermore, considering the corrugated nature of the skylight tile, the first sealing groove 231 has a corrugated structure that matches the corrugations on the skylight tile, ensuring a proper fit and reliable seal. The first sealing groove 231 is higher than the second sealing groove 232, and the skylight tile is higher than the bifacial photovoltaic module. This facilitates the installation and removal of the skylight tile and also improves waterproof sealing.

[0053] In some embodiments, a waterproof layer is provided on the inner side of the first, second, third, and fourth sealing slots. The waterproof layer is made of plastic and serves to seal and waterproof the surface. Due to its flexibility, it facilitates the installation and removal of the skylight.

[0054] In addition, a tongue-and-groove structure is provided between the first connecting strip 23 and the second connecting strip 24, wherein the third sealing groove on the second connecting strip is shorter than the fourth sealing groove, so as to form a tongue-and-groove 243 at both ends of the length of the second connecting strip, which abuts against both ends of the length of the first connecting strip. This ensures a closed connection between the first connecting strip and the second connecting strip, facilitating sealing and waterproofing between the light-transmitting tile and the four-sided double-sided photovoltaic modules.

[0055] The sloping structure includes several horizontal beams 11 arranged side-by-side along the longitudinal direction, typically with several longitudinal beams arranged side-by-side below them. A support member 25 is provided between the skylight and the horizontal beams. The support member has an engaging portion 251 that engages with the horizontal beams, and a support portion 252 that supports the skylight. The engaging portion 251 does not require fasteners for fixation. The support portion includes two support wings located on both sides of the upper longitudinal direction of the support member. Each support wing includes an inclined section and a support section. The support section is parallel to the bifacial photovoltaic module to effectively support the bifacial photovoltaic module and prevent deformation of the skylight when the span is large.

[0056] To enable the enclosed enclosure structure to be translucent, the enclosed enclosure structure 14 includes translucent tiles 22. For example... Figure 11 As shown, the photovoltaic bracket has support columns 13 on its sides. Since the photovoltaic array is located on the south side, the photovoltaic bracket is also set with an inclined structure relative to the photovoltaic array. In this case, the support columns 13 are set at an incline, and the light-transmitting tiles 22 are fixed to the support columns with self-tapping screws, which improves the light transmission effect on the north side. The east and west sides can also be set at an incline or vertically. In this way, the north and south sides and east and west sides of the photovoltaic bracket can be sealed with transparent light-transmitting tiles to form a whole, which not only forms a closed space inside the bracket but also does not affect the light transmission inside the bracket. Of course, other light-transmitting materials can also be used to replace the light-transmitting tiles.

[0057] In addition, reflective materials, such as reflective film, can be installed on the roof to reflect sunlight entering the inside of the bracket to the bifacial photovoltaic modules.

[0058] refer to Figure 12 As shown, the bifacial photovoltaic module 21 is fixed to the crossbeam 11 by a pressure plate assembly 12. The pressure plate assembly 12 includes a pressure plate 121 and pressure plate bolts 122 that fix the pressure plate to the frames of two adjacent photovoltaic modules laterally. The pressure plate bolts 122 are U-bolts, including a U-shaped screw and a nut connected to the screw. The pressure plate 121 has a through hole that mates with the screw. The U-shaped screw passes downward through the through hole and mates with the crossbeam. A fixing plate 123 is provided below the crossbeam. The U-shaped screw passes downward through the fixing plate and is connected to the nut on the underside of the fixing plate.

[0059] The installation method for the aforementioned photovoltaic (PV) rooftop power station is as follows: The skylights on the sloping top of the PV support are connected to the north and south-side modules via a first connecting strip on the north and south sides, and to the east and west-side modules via a second connecting strip on the east and west sides. Two wing-shaped support members are installed between the lower side of the skylights and the crossbeams. The engaging parts of the wing-shaped support members can be engaged with the crossbeams, and the supporting parts are used to support the skylights. The north and south sides, as well as the east and west sides, of the PV support are all enclosed with skylights, forming a unified structure.

[0060] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A photovoltaic synergistic flat-to-pitched roof power station, comprising a photovoltaic support, the top of the photovoltaic support is provided with a slope structure, the side is provided with a closed enclosure structure, characterized in that, The slope structure is provided with a plurality of double-sided photovoltaic modules, a light-transmitting window is arranged between the plurality of double-sided photovoltaic modules, the light-transmitting window is provided with a light collecting tile, a sealing element is arranged between the light collecting tile and the adjacent double-sided photovoltaic module, and the closed enclosure structure is a light-transmitting structure.

2. A photovoltaic enhanced pitched roof power plant according to claim 1, characterized in that, The sealing element comprises a first connecting strip arranged on the longitudinal two sides of the light collecting tile, the first connecting strip is provided with a first sealing groove in sealing connection with the longitudinal side of the light collecting tile and a second sealing groove in sealing connection with the frame of the adjacent double-sided photovoltaic module.

3. A photovoltaic boosted curb appeal roof top plant according to claim 2, wherein, The first sealing groove is provided with a corrugated structure matched with the corrugation of the light collecting tile; and / or the first sealing groove is higher than the second sealing groove, and the light collecting tile is higher than the double-sided photovoltaic module.

4. The photovoltaic boosted flat converted roof power station according to claim 2, characterized in that, The sealing element further comprises a second connecting strip arranged on the transverse two sides of the light collecting tile, the second connecting strip is provided with a third sealing groove in sealing connection with the transverse side of the light collecting tile and a fourth sealing groove in sealing connection with the frame of the adjacent double-sided photovoltaic module.

5. A photovoltaic enhanced, hip-to-gable roof top plant according to claim 4, characterized in that, The inner sides of the first sealing groove, the second sealing groove, the third sealing groove and the fourth sealing groove are provided with a waterproof layer.

6. A photovoltaic boosted curb appeal roof top plant according to claim 4, wherein, A tongue-and-groove structure is arranged between the first connecting strip and the second connecting strip.

7. The photovoltaic enhanced reroofing plant according to claim 1, characterized in that, The slope structure comprises a plurality of transverse beams arranged side by side in the longitudinal direction, and a supporting element is arranged between the light collecting tile and the transverse beam.

8. A photovoltaic yield enhancing flat-to-pitched roof power plant according to claim 7, characterized in that, The supporting element is provided with a clamping portion clamped with the transverse beam, and the supporting element is provided with a supporting portion supporting the light collecting tile.

9. A photovoltaic yield enhancing flat-to-pitched roof power plant according to claim 8, characterized in that, The supporting portion comprises two supporting wings arranged on the longitudinal two sides of the upper portion of the supporting element.

10. The photovoltaic enhanced reroofing plant according to claim 1, characterized in that, The closed enclosure structure is provided with the light collecting tile.

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