Flexible photovoltaic rack unit and flexible photovoltaic rack array

Abstract

Disclosed are a flexible photovoltaic rack unit and a flexible photovoltaic rack array. The flexible photovoltaic rack unit comprises a support assembly, a photovoltaic assembly and a vibration-suppression assembly. The support assembly comprises a plurality of pairs of support poles and a plurality of load-bearing cables, wherein the plurality of pairs of support poles are arranged at intervals in a first direction, the support poles in each pair are spaced apart in a second direction, and two ends of each of the plurality of load-bearing cables are correspondingly connected to the top ends of the plurality of pairs of support poles to form a support surface, the first direction being orthogonal to the second direction. The photovoltaic assembly comprises a plurality of photovoltaic panels, the plurality of photovoltaic panels being laid on the support surface at intervals in the second direction. The vibration-suppression assembly comprises a plurality of flow guide plates, wherein the plurality of flow guide plates are correspondingly mounted on the support surfaces between the plurality of adjacent photovoltaic panels; and both the top and bottom surfaces of each flow guide plate are arc-shaped surfaces, and the arc-shaped surfaces protrude outwards in directions away from the flow guide plate.

Description

Flexible photovoltaic support unit and flexible photovoltaic support array

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 2023218629864 filed in China on July 14, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of photovoltaic power generation, and in particular to a flexible photovoltaic support unit and a flexible photovoltaic support array. Background Art

[0004] As the supporting structure for arranging and fixing photovoltaic panels, photovoltaic brackets play an important role in photovoltaic power generation systems. According to the different structural forms of the components connected to the photovoltaic panels, photovoltaic brackets can be divided into rigid photovoltaic brackets and flexible photovoltaic brackets. Among them, flexible photovoltaic brackets are often used in areas with relatively tight land resources because of their advantages of large span, high clearance and long column distance, so as to improve the applicability of photovoltaic brackets.

[0005] In related technologies, flexible photovoltaic brackets generally use prestressed steel strands to fix photovoltaic panels. However, steel strands are components that are sensitive to wind vibration and need to be used in conjunction with stabilizing cables or dampers to improve the stability of photovoltaic panels under strong wind conditions, which increases the complexity of the implementation of flexible photovoltaic brackets and increases the installation cost of flexible photovoltaic brackets.

[0006] Summary of the Invention

[0007] The technical problem to be solved by the present disclosure is that, in response to the defects and shortcomings of the existing technology, a flexible photovoltaic bracket unit is provided, in which guide plates are arranged between adjacent photovoltaic panels. While improving the operating stability of the flexible photovoltaic bracket, the installation process of the flexible photovoltaic bracket is simplified and the installation cost of the flexible photovoltaic bracket is reduced.

[0008] The present disclosure also provides a flexible photovoltaic support array.

[0009] The flexible photovoltaic bracket unit provided by the embodiment of the first aspect of the present disclosure includes: a support component, the support component includes multiple pairs of support columns and multiple load-bearing cables, the support columns are fixed on the ground, multiple pairs of support columns are arranged at intervals along a first direction, and each pair of support columns is arranged at intervals along a second direction, and the two ends of multiple load-bearing cables are correspondingly connected to the top ends of multiple pairs of support columns to form a support surface, and the first direction and the second direction are orthogonal; a photovoltaic component, the photovoltaic component includes multiple photovoltaic panels, and the multiple photovoltaic panels are laid on the support surface at intervals along the second direction; a vibration suppression component, the vibration suppression component includes multiple guide plates, and the multiple guide plates are correspondingly installed on the support surface between multiple adjacent photovoltaic panels, and the top and bottom surfaces of the guide plates are both arc-shaped surfaces, and the arc-shaped surfaces protrude outward in a direction away from the guide plates.

[0010] According to the flexible photovoltaic bracket unit of the embodiment of the present disclosure, the support assembly includes multiple pairs of support columns and multiple load-bearing cables. The support columns are fixed to the ground, the multiple pairs of support columns are arranged at intervals along the first direction, and each pair of support columns is arranged at intervals along the second direction. The two ends of the multiple load-bearing cables are correspondingly connected to the top ends of the multiple pairs of support columns to form a support surface. The first direction and the second direction are orthogonal. The photovoltaic assembly includes multiple photovoltaic panels, and the multiple photovoltaic panels are laid on the support surface at intervals along the second direction. The vibration suppression assembly includes multiple guide plates, and the multiple guide plates are correspondingly installed on the support surface between the multiple adjacent photovoltaic panels. The top and bottom surfaces of the guide plates are both arc-shaped surfaces, and the arc-shaped surfaces protrude outward in the direction away from the guide plates. Therefore, compared with the traditional technology, the flexible photovoltaic bracket unit of the present application is additionally provided with a vibration suppression assembly, that is, guide plates are arranged between adjacent photovoltaic panels to change the aerodynamic shape of the photovoltaic assembly, increase the critical wind speed of flutter of the flexible photovoltaic bracket unit, and enhance the stability of the flexible photovoltaic bracket unit under strong wind conditions. In addition, the guide plates have a simple structure and are easy to manufacture and apply, which simplifies the installation process of the flexible photovoltaic bracket and reduces the installation cost of the flexible photovoltaic bracket.

[0011] In some embodiments, the curved surface is divided into a head windward section, a middle smooth section and a tail leeward section along the first direction, the curvature radius of the head windward section is a, then 50mm≤a≤100mm, the curvature radius of the middle smooth section is b, then 100mm≤a≤200mm, and the curvature radius of the tail leeward section is c, then 20mm≤a≤50mm.

[0012] In some embodiments, the cross-section of the guide plate in the second direction is any one of a shuttle shape, an elliptical shape, a spindle shape and a teardrop shape.

[0013] In some embodiments, the guide plate is made of any one of an aluminum alloy, a titanium alloy or a composite material.

[0014] In some embodiments, the heights of the multiple pairs of support columns decrease or increase sequentially along the first direction.

[0015] In some embodiments, a pulley is provided at the top of the support column, and a portion of the load-bearing cable is wound around the pulley, and the rotation of the pulley can tighten or loosen the load-bearing cable.

[0016] In some embodiments, the load-bearing cables are prestressed cables.

[0017] In some embodiments, the support assembly further includes a diagonal member, which includes a diagonal rod and an anchor support. The anchor support is fixed to the ground at both ends of the load-bearing cable. One end of the diagonal rod is connected to the anchor support, and the other end extends upward and is connected to the top of the support column.

[0018] The flexible photovoltaic bracket array provided by the second aspect embodiment of the present disclosure includes multiple flexible photovoltaic bracket units according to any embodiment of the first aspect above, and the multiple flexible photovoltaic bracket units are arranged in sequence along the first direction, and / or the multiple flexible photovoltaic bracket units are arranged in sequence along the second direction.

[0019] According to the flexible photovoltaic bracket array of the embodiment of the present disclosure, by adopting multiple flexible photovoltaic bracket units described in any embodiment of the first aspect above, it can operate stably under strong wind conditions and has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic structural diagram of a flexible photovoltaic support unit according to an embodiment of the present disclosure.

[0021] FIG2 is a top view of a flexible photovoltaic support unit according to an embodiment of the present disclosure.

[0022] FIG3 is a cross-sectional view of a guide plate of a flexible photovoltaic support unit according to an embodiment of the present disclosure.

[0023] Figure numerals: 1. Support assembly; 11. Support column; 12. Load-bearing cable; 13. Pulley; 2. Photovoltaic assembly; 21. Photovoltaic panel; 3. Vibration suppression assembly; 31. Guide plate; 311. Head windward section; 312. Middle smooth section; 313. Tail leeward section; 4. Diagonal member; 41. Anchor support; 42. Diagonal rod. DETAILED DESCRIPTION

[0024] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0025] As shown in Figures 1-3, the flexible photovoltaic bracket unit of the embodiment of the present disclosure includes a support component 1, a photovoltaic component 2 and a vibration suppression component 3.

[0026] Specifically, the support assembly 1 includes multiple pairs of support columns 11 and multiple load-bearing cables 12. The support columns 11 are fixed on the ground. The multiple pairs of support columns 11 are spaced apart along a first direction (the front-to-back direction as shown in Figure 2), and each pair of support columns 11 is spaced apart along a second direction (the left-to-right direction as shown in Figure 2). The two ends of the multiple load-bearing cables 12 are correspondingly connected to the top ends of the multiple pairs of support columns 11 to form a support surface. The first direction and the second direction are orthogonal. The photovoltaic assembly 2 includes multiple photovoltaic panels 21. The multiple photovoltaic panels 21 are laid on the support surface at intervals along the second direction. The vibration suppression assembly 3 includes multiple guide plates 31. The multiple guide plates 31 are correspondingly installed on the support surface between the multiple adjacent photovoltaic panels 21. The top and bottom surfaces of the guide plates 31 are both arc-shaped surfaces, and the arc-shaped surfaces protrude outward in the direction away from the guide plates 31.

[0027] It can be understood that in the support assembly 1, each load-bearing cable 12 is tensioned by the support columns 11 connected to its two ends, and multiple pairs of support columns 11 are arranged at intervals along the first direction, and the multiple load-bearing cables 12 connected to the top of the multiple pairs of support columns 11 are parallel to each other, thereby forming a support surface for installing the photovoltaic assembly 2.

[0028] It should be noted that compared with traditional technology, the flexible photovoltaic bracket unit of the present application has an additional vibration suppression component 3, that is, a guide plate 31 is interspersed between adjacent photovoltaic panels 21, and the upper and lower sides of the guide plate 31 are both arc-shaped surfaces protruding outward, thereby changing the aerodynamic shape of the photovoltaic component 2. When strong wind reaches the photovoltaic component 2, the flow pattern or vortex structure of the strong wind will be destroyed by the vibration suppression component 3, thereby increasing the critical wind speed of the flexible photovoltaic bracket unit and enhancing the stability of the flexible photovoltaic bracket unit under strong wind conditions.

[0029] It is understandable that the guide plate 31 can be manufactured by mold casting or 3D printing, has a simple structure, is easy to promote and apply, and reduces the installation cost of the flexible photovoltaic bracket unit.

[0030] According to the flexible photovoltaic bracket unit of the embodiment of the present disclosure, the support assembly includes multiple pairs of support columns and multiple load-bearing cables. The support columns are fixed to the ground, the multiple pairs of support columns are arranged at intervals along the first direction, and each pair of support columns is arranged at intervals along the second direction. The two ends of the multiple load-bearing cables are correspondingly connected to the top ends of the multiple pairs of support columns to form a support surface. The first direction and the second direction are orthogonal. The photovoltaic assembly includes multiple photovoltaic panels, and the multiple photovoltaic panels are laid on the support surface at intervals along the second direction. The vibration suppression assembly includes multiple guide plates, and the multiple guide plates are correspondingly installed on the support surface between the multiple adjacent photovoltaic panels. The top and bottom surfaces of the guide plates are both arc-shaped surfaces, and the arc-shaped surfaces protrude outward in the direction away from the guide plates. Therefore, compared with the traditional technology, the flexible photovoltaic bracket unit of the present application is additionally provided with a vibration suppression assembly, that is, guide plates are arranged between adjacent photovoltaic panels to change the aerodynamic shape of the photovoltaic assembly, increase the critical wind speed of flutter of the flexible photovoltaic bracket unit, and enhance the stability of the flexible photovoltaic bracket unit under strong wind conditions. In addition, the guide plates have a simple structure and are easy to manufacture and apply, which simplifies the installation process of the flexible photovoltaic bracket and reduces the installation cost of the flexible photovoltaic bracket.

[0031] In some embodiments, as shown in Figure 3, the curved surface is divided into a head windward section 311, a middle smooth section 312 and a tail leeward section 313 along the first direction, the curvature radius of the head windward section 311 is a, then 50mm≤a≤100mm, the curvature radius of the middle smooth section 312 is b, then 100mm≤a≤200mm, and the curvature radius of the tail leeward section 313 is c, then 20mm≤a≤50mm.

[0032] It is understandable that the curved surface can be designed in sections, which can be divided into a head windward section 311, a middle smooth section 312 and a tail leeward section 313. The curvature value of each section should be determined according to the results of the simulated wind tunnel test.

[0033] In some embodiments, the cross-section of the guide plate 31 in the second direction is any one of a shuttle shape, an elliptical shape, a spindle shape, and a teardrop shape.

[0034] It can be understood that the shuttle shape, elliptical shape, spindle shape and teardrop shape are all streamlined designs, which reduce the resistance of the guide plate 31 while improving the aesthetics of the guide plate 31.

[0035] In some embodiments, the guide plate 31 is made of any one of an aluminum alloy, a titanium alloy, or a composite material.

[0036] It can be understood that aluminum alloy parts, titanium alloy parts or composite materials have low density and high structural strength, which can not only reduce the load on the load-bearing cable 12 caused by the addition of the guide plate 31, but also extend the service life of the guide plate 31, thereby improving the applicability of the vibration suppression component 3.

[0037] In some embodiments, as shown in Figures 1 and 2, the heights of multiple pairs of support columns 11 are sequentially lowered or increased along a first direction, thereby forming an inclined support surface at the top of the multiple pairs of support columns 11. The photovoltaic panels 21 installed on the inclined support surface can obtain greater solar radiation energy, thereby increasing the power generation of the flexible photovoltaic bracket unit.

[0038] In some embodiments, a pulley 13 is provided at the top of the support column 11, and part of the load-bearing cable 12 is wound around the pulley 13. The rotation of the pulley 13 can tighten or loosen the load-bearing cable 12, that is, the staff can adjust the tightness of the load-bearing cable 12 through the pulley 13 to ensure that the photovoltaic module 2 can always receive normal sunlight exposure.

[0039] In some embodiments, as shown in FIG. 1 and FIG. 2 , the load-bearing cables 12 are prestressed cables.

[0040] It can be understood that the prestressed cable structure has high strength, which can effectively improve the compressive stability of the load-bearing cable 12 and prevent the load-bearing cable 12 from deforming under long-term compressive conditions.

[0041] In some embodiments, as shown in Figures 1-3, the support assembly 1 also includes a diagonal member 4, which includes a diagonal rod 42 and an anchor support 41. The anchor support 41 is fixed to the ground at both ends of the load-bearing cable 12. One end of the diagonal rod 42 is connected to the anchor support 41, and the other end extends upward and is connected to the top of the support column 11.

[0042] It should be noted that the load formed by the photovoltaic assembly 2 and the vibration suppression assembly 3 will cause the load-bearing cable 12 to bend downward, and then the load-bearing cable 12 will generate tension on the support column 11, causing the support column 11 to tilt inward. In the inclined member 4, the inclined rod 42 connected to the anchor support 41 can prevent the support column 11 from tilting on the outside of the support column 11, thereby improving the stability of the installation of the support column 11.

[0043] The flexible photovoltaic bracket array of the embodiment of the present disclosure includes multiple flexible photovoltaic bracket units according to the above embodiments, and the multiple flexible photovoltaic bracket units are arranged in sequence along the first direction, and / or the multiple flexible photovoltaic bracket units are arranged in sequence along the second direction.

[0044] According to the flexible photovoltaic bracket array of the embodiment of the present disclosure, by adopting multiple flexible photovoltaic bracket units of the above embodiments, it can operate stably under strong wind conditions and has good applicability.

[0045] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present disclosure.

[0046] Furthermore, the terms "first" and "second" 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 being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0047] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0048] In this disclosure, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0049] In the present disclosure, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0050] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A flexible photovoltaic support unit, comprising: A support assembly, the support assembly comprising a plurality of pairs of support columns and a plurality of load-bearing cables, the support columns being fixed on the ground, the plurality of pairs of support columns being spaced apart along a first direction, each pair of support columns being spaced apart along a second direction, two ends of the plurality of load-bearing cables being correspondingly connected to the top ends of the plurality of pairs of support columns to form a support surface, the first direction being orthogonal to the second direction; A photovoltaic assembly, wherein the photovoltaic assembly comprises a plurality of photovoltaic panels, and the plurality of photovoltaic panels are laid on the support surface at intervals along the second direction; A vibration suppression component, the vibration suppression component includes a plurality of guide plates, the plurality of guide plates are correspondingly installed on the support surface between a plurality of adjacent photovoltaic panels, the top surface and the bottom surface of the guide plate are both arc-shaped surfaces, and the arc-shaped surfaces protrude outward in a direction away from the guide plate.

2. The flexible photovoltaic bracket unit according to claim 1, wherein the curved surface is divided into a head windward section, a middle smooth section and a tail leeward section along the first direction, the curvature radius of the head windward section is a, then 50mm≤a≤100mm, the curvature radius of the middle smooth section is b, then 100mm≤a≤200mm, and the curvature radius of the tail leeward section is c, then 20mm≤a≤50mm.

3. The flexible photovoltaic bracket unit according to claim 1 or 2, wherein the cross-section of the guide plate in the second direction is any one of a shuttle shape, an elliptical shape, a spindle shape and a teardrop shape.

4. The flexible photovoltaic bracket unit according to claim 3, wherein the guide plate is any one of an aluminum alloy material, a titanium alloy material or a composite material.

5. The flexible photovoltaic support unit according to any one of claims 1 to 4, wherein the heights of the plurality of pairs of support columns decrease or increase sequentially along the first direction.

6. The flexible photovoltaic support unit according to claim 5, wherein a pulley is provided at the top end of the support column, a portion of the load-bearing cable is wound around the pulley, and the rotation of the pulley can tighten or loosen the load-bearing cable.

7. The flexible photovoltaic support unit according to claim 6, wherein the load-bearing cable is a prestressed cable.

8. A flexible photovoltaic support unit according to any one of claims 1 to 7, wherein the support assembly also includes a diagonal member, the diagonal member includes a diagonal rod and an anchor support, the anchor support is fixed to the ground at both ends of the load-bearing cable, one end of the diagonal rod is connected to the anchor support, and the other end extends upward and is connected to the top of the support column.

9. A flexible photovoltaic support array, comprising a plurality of flexible photovoltaic support units according to any one of claims 1 to 8, wherein the plurality of flexible photovoltaic support units are arranged in sequence along the first direction, and / or the plurality of flexible photovoltaic support units are arranged in sequence along the second direction.

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