Flexible photovoltaic support suitable for HJT vertical installation photovoltaic assembly

Abstract

The invention discloses a flexible photovoltaic support suitable for an HJT vertical installation photovoltaic module, and belongs to the technical field of photovoltaic power generation. The inclined photovoltaic assembly comprises first supporting columns at the two ends and a first steel strand tied between the two first supporting columns, and an inclined photovoltaic panel is installed on the first steel strand. The two columns of vertical photovoltaic modules are arranged on the two sides of the multiple columns of inclined photovoltaic modules respectively and comprise a column of second supporting columns and second steel strands tied to the column of second supporting columns, and vertical photovoltaic panels are installed on the second steel strands; a third steel strand is tied between every two opposite second supporting columns in the two rows of second supporting columns, and the third steel strands are perpendicular to the first steel strands and have an intersection with the first steel strands. According to the invention, the inclined photovoltaic modules and the vertical photovoltaic modules are flexibly combined, and the vertical photovoltaic modules form a power generation wind barrier, so that the wind load borne by the inclined photovoltaic modules of the internal array is greatly reduced, and the overall stability and power generation efficiency of the photovoltaic modules are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a flexible photovoltaic bracket suitable for HJT vertically mounted photovoltaic modules. Background Art

[0002] Traditional flexible photovoltaic brackets are usually installed on flexible photovoltaic brackets at the optimal local power generation angle. Flexible photovoltaic brackets have the advantages of large span, high clearance, and long column distance, and are very popular in mountainous areas, fish-photovoltaic complementary, photovoltaic sand control and other application scenarios. However, flexible photovoltaic brackets have low rigidity and are prone to wind-induced vibration under wind loads, which is also one of the key pain points in practical applications. In photovoltaic power generation arrays, the wind loads on peripheral photovoltaic modules are relatively large, while the wind loads on internal photovoltaic modules are relatively small. This is mainly due to the wind-blocking effect of peripheral photovoltaic modules on the internal modules. Generally, photovoltaic modules are arranged at the optimal inclination angle, so the wind-blocking effect on internal modules is limited.

[0003] In traditional flexible photovoltaic power generation arrays, under the influence of ground wind fields, the photovoltaic brackets at the southernmost and northernmost parts of the array are usually most affected by wind, have the worst working conditions, and are prone to damage. According to the results of wind tunnel tests, the three rows of brackets at the outermost north and south sides are most affected by wind. Figure 7 As shown in the figure, the transmission flexible bracket array and the tilted bracket will produce strong vortex vibration on the back of the photovoltaic panel under the action of wind, causing the photovoltaic panel to vibrate and the bracket to be unstable. This situation will not subside significantly until 3 to 4 consecutive rows are installed, which seriously affects the stability of the photovoltaic bracket and the power generation efficiency of the photovoltaic panel. Summary of the Invention

[0004] In response to the above-mentioned technical deficiencies, the present invention provides a flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules.

[0005] With advances in photovoltaic panel technology, new HJT photovoltaic modules, featuring bifacial power generation and vertical mounting capabilities, have found applications in fixed photovoltaic mounting systems. This solution flexibly combines tilted and vertical photovoltaic modules to create a wind shield. This significantly reduces wind loads on the tilted modules within the array, improving overall module stability and power generation efficiency.

[0006] The present invention adopts the following technical solution: a flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules, comprising: A plurality of parallel rows of tilted photovoltaic modules, each comprising a first support at both ends and a first steel strand tied between the first supports, wherein the tilted photovoltaic panels are mounted on the first steel strand; Two rows of vertical photovoltaic modules are placed on both sides of the multiple rows of inclined photovoltaic modules and are parallel to the inclined photovoltaic modules; The vertical photovoltaic assembly includes a row of second pillars and a second steel strand tied to the row of second pillars, the second steel strand is mounted with a vertical photovoltaic panel, and the vertical photovoltaic panel is opposite to the inclined photovoltaic panel in a horizontal plane; Among them, a third steel strand is tied between two opposite second strands in the two columns. The third steel strand is perpendicular to the first steel strand and has an intersection. The third steel strand is fixedly connected to the first steel strand through a connector at the intersection.

[0007] Preferably, three first steel strands are tied between the first pillars at both ends; Two third steel strands are tied between two opposite second pillars in the two rows of second pillars; The connecting piece is fixedly connected to the three first steel strands and the two third steel strands at the intersection.

[0008] Preferably, the connecting piece is a triangular pyramid structure.

[0009] Preferably, the connecting member is a triangular pyramid structure consisting of a first rod, a second rod, a third rod, a fourth rod, a fifth rod and a sixth rod fixed end to end; The first end of the first rod is fixed to the first end of the third rod and the first end of the sixth rod; The second end of the first rod is fixed to the first end of the second rod and the first end of the fourth rod; The first end of the fifth rod is fixed to the second end of the fourth rod and the second end of the sixth rod; The second end of the fifth rod is fixed to the second end of the second rod and the second end of the third rod; At the intersection, the three first steel strands are arranged in an upper, middle and lower position, and the two third steel strands are arranged in an upper and lower position; The first steel strand on the upper side is attached to and fixedly connected to the first rod; The first steel strand in the middle, the third steel strand on the upper side are fixedly connected to the intersection of the second rod, the third rod and the fifth rod; The first steel strand on the lower side, the third steel strand on the lower side are fixedly connected to the intersections of the fourth rod, the fifth rod and the sixth rod.

[0010] Preferably, two ends of the inclined photovoltaic panel are respectively fixed on the upper first steel strand and the middle first steel strand.

[0011] Preferably, the upper ends of the first pillars at each end are fixedly connected into one piece via a crossbeam.

[0012] Preferably, one end of the first steel strand passes through the crossbeam on the corresponding side and is connected to the first strut, and the first steel strand has a certain pre-tightening force.

[0013] Preferably, an auxiliary beam parallel to the crossbeam is provided at a middle position of the inclined photovoltaic assembly, and the middle of the first steel strand is supported on the auxiliary beam.

[0014] Preferably, a second strut is provided at one end of each column of the second pillars, one end of the second steel strand passes through the second pillar on the corresponding side and is connected to the second strut on the corresponding side, and the second steel strand has a certain pre-tightening force.

[0015] Preferably, a third strut is provided on one side of each second pillar, one end of the third steel strand passes through the second pillar on the corresponding side and is connected to the third strut on the corresponding side, and the third steel strand has a certain pre-tightening force.

[0016] The beneficial effects of the present invention are: The second pillars on both sides are used to install vertical photovoltaic panels and serve as fixing points for the third steel strands. The third steel strands combine the support structures of the inclined photovoltaic modules and the vertical photovoltaic modules to form an integrated wind-resistant stabilizing cable, improving the stability of the inclined photovoltaic modules in the middle. At the same time, the vertically installed photovoltaic panels are arranged on the outside of the tilted photovoltaic modules, which has a good wind shielding effect and solves the airflow vortex vibration problem of the tilted photovoltaic modules. Conventional fixed windbreaks rely on the strength of the support itself and are difficult to adapt to strong winds. The vertical photovoltaic panels in this solution use a flexible support structure, which has all the advantages of flexible photovoltaic supports. It greatly improves the ability to absorb wind load vibrations and can still maintain stability under strong wind loads, providing effective windbreak effect. A triangular pyramid-shaped connector is set at the intersection of the first steel strands and the third steel strands, which effectively connects the three first steel strands and the two third steel strands. While maintaining the inclined installation angle of the photovoltaic panel, it improves the connection strength at the intersection and ensures the stability of the entire flexible photovoltaic bracket and the power generation efficiency of the photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a three-dimensional diagram of a flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to the present invention.

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 for Figure 2 Enlarged view of point B in the middle.

[0021] Figure 4 This is a top view of a flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to the present invention.

[0022] Figure 5 This is a left view of a flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to the present invention.

[0023] Figure 6 It is a simulation schematic diagram of the present invention under the action of wind.

[0024] Figure 7 This is a simulation diagram of a flexible photovoltaic bracket under wind force in the prior art.

[0025] Description of reference numerals: 1. Tilt photovoltaic module; 11. First pillar; 12. First steel strand; 13. Tilt photovoltaic panel; 14. Crossbeam; 15. First support pole; 2. Vertical photovoltaic module; 21. Second pillar; 22. Second steel strand; 23. Vertical photovoltaic panel; 24. Second support pole; 3. Connecting member; 301. First rod; 302. Second rod; 303. Third rod; 304. Fourth rod; 305. Fifth rod; 306. Sixth rod; 31. Third steel strand; 32. Third support rod. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1: like Figures 1 to 5 As shown, the present invention provides a flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules, including multiple columns of parallel arranged inclined photovoltaic modules 1 and two columns of vertical photovoltaic modules 2 located on both sides of the inclined photovoltaic modules 1. The vertical photovoltaic modules 2 are used as windbreak structures for the inclined photovoltaic modules 1 and are also used as longitudinal tie points for the inclined photovoltaic modules 1, thereby improving the overall strength and wind resistance of the inclined photovoltaic modules 1.

[0028] Each column of inclined photovoltaic modules 1 includes first pillars 11 at both ends and first steel strands 12 tied between the two first pillars 11. The inclined photovoltaic panels 13 are installed obliquely on the first steel strands 12. The first pillars 11 at each end are arranged horizontally. Each column of vertical photovoltaic modules 2 includes a column of second pillars 21. The two columns of second pillars 21 and the two columns of first pillars 11 are arranged in a rectangular shape. A third steel strand 31 is tied to each column of second pillars 21. The vertical photovoltaic panels 23 are installed vertically on the third steel strands 31. The vertical photovoltaic panels 23 are opposite to the inclined photovoltaic panels 13 in a horizontal plane. The vertical photovoltaic panels 23 are used to block wind blowing towards the inclined photovoltaic panels 13 from both sides.

[0029] In the two rows of second pillars 21, a third steel strand 31 is tied between each two opposing second pillars 21. The third steel strand 31 is perpendicular to the first steel strand 12 and has an intersection. A connector 3 is provided at the intersection, connecting the third steel strand 31 and the first steel strand 12 together at the intersection. The connector 3 and the third steel strand 31 use the vertical photovoltaic modules 2 on both sides as fulcrums to flexibly combine the inclined photovoltaic modules and the vertical photovoltaic modules, improving the stability of the inclined photovoltaic panels 13 in the middle. At the same time, the outer vertical photovoltaic panels 23 form a flexible wind barrier for power generation, which has an excellent wind-blocking effect and avoids the airflow vortex vibration problem of the internal inclined photovoltaic panels 13.

[0030] Example 2: Based on the above embodiment 1, combined with Figures 1 to 3 As shown, this embodiment provides a specific connection structure between a connector 3 and an intersection. The connector 3 is a triangular pyramid structure, comprising a first rod 301, a second rod 302, a third rod 303, a fourth rod 304, a fifth rod 305, and a sixth rod 306. The first end of the first rod 301 is fixed to the first end of the third rod 303 and the first end of the sixth rod 306; the second end of the first rod 301 is fixed to the first end of the second rod 302 and the first end of the fourth rod 304; the first end of the fifth rod 305 is fixed to the second end of the fourth rod 304 and the second end of the sixth rod 306; and the second end of the fifth rod 305 is fixed to the second end of the second rod 302 and the second end of the third rod 303.

[0031] The intersection has three first steel strands 12 and two third steel strands 31. The three first steel strands 12 are arranged in the upper, middle and lower positions, and the two third steel strands 31 are arranged in the upper and lower positions. Figure 3As shown, the upper first steel strand 12 is attached to and fixedly connected to the first rod 301. The middle first steel strand 12 and the upper third steel strand 31 are both fixed to the intersection of the second rod 302, the third rod 303, and the fifth rod 305. There is a certain height difference between the upper first steel strand 12 and the middle first steel strand 12, which is used to tilt the installation of the tilted photovoltaic panel 13 to ensure the lighting angle. The lower first steel strand 12 and the lower third steel strand 31 are both fixed to the intersection of the fourth rod 304, the fifth rod 305, and the sixth rod 306. The triangular pyramid stably connects the three first steel strands and the two third steel strands, so that all the tilted photovoltaic modules 1 and the vertical photovoltaic modules 2 are intertwined. While maintaining the installation angle of the tilted photovoltaic panel 13, it effectively improves the connection strength of the entire flexible photovoltaic support.

[0032] Example 3: Based on the above embodiment 2, combined with Figures 1 to 5 As shown, the upper ends of the first pillars 11 at each end are fixedly connected together by a crossbeam 14. A first strut 15 is provided on the outside of the first pillar 11. The first strut 15 and the first pillar 11 are fixed to the foundation. One end of the first steel strand 12 passes through the crossbeam 14 and is fixedly connected to the first strut 15. The first steel strand 12 is loaded with a certain preload. For large-span tilted photovoltaic modules 1, one or more auxiliary beams are provided in the middle. The auxiliary beams and the crossbeam 14 use the same support structure. The first steel strand 12 is supported in the middle on the auxiliary beams to prevent the first steel strand 12 from falling too much and improve overall stability.

[0033] A second brace 24 is provided at one end of each second column 21. The second brace 24 and the second column 21 are fixed to the foundation. Two second steel strands 22 pass through the second column 21 and are fixed to the second brace 24. The second steel strands 22 are loaded with a certain preload. When the span of the vertical photovoltaic module 2 is larger, a third brace 32 is added to one side of each second column 21. The third brace 32 is fixed to the foundation. The ends of the third steel strands 31 pass through the second column 21 and are fixedly connected to the third brace 32. The third steel strands 31 are loaded with a certain preload. In this embodiment, the second column 21 and the second steel strands 22 also form a flexible support. The vertical photovoltaic panel 23 is vertically fixed to the two second steel strands 22. The vertical photovoltaic panel 23 adopts a flexible support structure and is interwoven with the internal inclined photovoltaic module 1 through the third steel strands 31. This greatly improves the ability to absorb wind load vibration. Even under high wind loads, it can still maintain stability and provide effective wind protection.

[0034] In this application, the vertical photovoltaic assembly 2 is supported by a flexible photovoltaic bracket to form a power generation wind barrier. The wind barrier supported by the flexible bracket has the smallest energy state when the bending deformation in the load action plane generated by strong wind is stable. No adverse wind-induced torsional vibration will occur under strong wind. Figure 6 As shown, in the simulation test, the vertical photovoltaic panels in the front row caused a significant shielding effect, which greatly improved the stability of the inclined photovoltaic panels on the rear side and ensured the power generation efficiency of the inclined photovoltaic panels.

[0035] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules, characterized in that: include: A plurality of parallel rows of tilted photovoltaic modules (1), the tilted photovoltaic modules (1) comprising first pillars (11) at both ends and a first steel strand (12) tied between the two first pillars (11), and a tilted photovoltaic panel (13) mounted on the first steel strand (12); Two rows of vertical photovoltaic modules (2) are arranged on both sides of the plurality of rows of inclined photovoltaic modules (1) and are parallel to the inclined photovoltaic modules (1); The vertical photovoltaic assembly (2) comprises a row of second pillars (21) and second steel strands (22) tied to the row of second pillars (11); a vertical photovoltaic panel (23) is mounted on the second steel strands (22); the vertical photovoltaic panel (23) and the inclined photovoltaic panel (13) are opposite to each other in a horizontal plane; A third steel strand (31) is tied between two opposing second strands (21) in the two rows of the second strands (21), the third steel strand (31) is perpendicular to the first steel strand (12) and has an intersection, and the third steel strand (31) and the first steel strand (12) are fixedly connected at the intersection via a connector (3).

2. The flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to claim 1, characterized in that: Three first steel strands (12) are tied between the first pillars (11) at both ends; Two third steel strands (31) are tied between two opposing second pillars (21) in the two rows of the second pillars (21); The connecting member (3) is fixedly connected to the three first steel strands (12) and the two third steel strands (31) at the intersection.

3. The flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to claim 2, characterized in that: The connecting piece (3) is a triangular pyramid structure.

4. The flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to claim 3, characterized in that: The connecting member (3) is a triangular pyramid structure consisting of a first rod (301), a second rod (302), a third rod (303), a fourth rod (304), a fifth rod (305) and a sixth rod (306) fixed end to end; The first end of the first rod (301) is fixed to the first end of the third rod (303) and the first end of the sixth rod (306); The second end of the first rod (301) is fixed to the first end of the second rod (302) and the first end of the fourth rod (304); The first end of the fifth rod (305) is fixed to the second end of the fourth rod (304) and the second end of the sixth rod (306); The second end of the fifth rod (305) is fixed to the second end of the second rod (302) and the second end of the third rod (303); At the intersection, the three first steel strands (12) are arranged in an upper, middle and lower position, and the two third steel strands (31) are arranged in an upper and lower position; The first steel strand (12) on the upper side is attached to and fixedly connected to the first rod (301); The first steel strand (12) in the middle, the third steel strand (31) on the upper side, and the intersections of the second rod (302), the third rod (303), and the fifth rod (305) are fixedly connected; The first steel strand (12) on the lower side, the third steel strand (31) on the lower side, and the intersections of the fourth rod (304), the fifth rod (305), and the sixth rod (306) are fixedly connected.

5. The flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to claim 4, characterized in that: The two ends of the inclined photovoltaic panel (13) are respectively fixed on the upper first steel strand (12) and the middle first steel strand (12).

6. The flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to claim 1, characterized in that: The upper ends of the first pillars (11) at each end are fixedly connected into one piece via a crossbeam (14).

7. The flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to claim 6, characterized in that: One end of the first steel strand (12) passes through the crossbeam (14) on the corresponding side and is connected to a first support rod (15). The first steel strand (12) has a certain pre-tightening force.

8. The flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to claim 6, characterized in that: An auxiliary beam parallel to the crossbeam (14) is provided at a middle position of the inclined photovoltaic assembly (1), and the middle of the first steel strand (12) is supported on the auxiliary beam.

9. The flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to claim 1, characterized in that: A second support rod (24) is provided at one end of each row of the second pillars (21), one end of the second steel strand (22) passes through the second pillar (21) on the corresponding side and is connected to the second support rod (24) on the corresponding side, and the second steel strand (22) has a certain pre-tightening force.

10. The flexible photovoltaic bracket suitable for HJT vertical installation of photovoltaic modules according to claim 1, characterized in that: A third strut (32) is provided on one side of each second pillar (21), one end of the third steel strand (31) passes through the second pillar (21) on the corresponding side and is connected to the third strut (32) on the corresponding side, and the third steel strand (31) has a certain pre-tightening force.

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