Photovoltaic bracket, photovoltaic array and photovoltaic module angle adjustment method

Abstract

The invention discloses a photovoltaic support, a photovoltaic array and a photovoltaic module angle adjustment method. The photovoltaic support comprises: two rows of supporting columns, the two rows of supporting columns are installed side by side on a foundation; a first turntable, which can be rotatably installed on the two rows of supporting columns, and a load-bearing cable anchoring point is arranged on the first turntable; a load-bearing cable is arranged between the two rows of supporting columns, and both ends of the load-bearing cable pass through the load-bearing cable anchoring point and are anchored and connected to the first turntable; a solar tracking controller is connected to a control motor, and the control motor is connected to the first turntable, and the solar tracking controller senses sunlight and adjusts the rotation angle of the first turntable through the control motor according to the incident angle of sunlight. The photovoltaic support and photovoltaic array have the advantages of light weight, strong bearing capacity, less pile foundation, short construction period, good heat dissipation performance, strong spanning ability, etc. of a cable-supported flexible photovoltaic support, and can adjust the inclination angle of the photovoltaic module in real time according to the incident angle of the sun, make full use of solar energy, and improve the power generation efficiency of the photovoltaic module.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and in particular to a tracking cable-supported flexible photovoltaic bracket, a photovoltaic array and a photovoltaic component angle adjustment method. Background Art

[0002] Photovoltaic brackets are an important part of photovoltaic systems. At present, the traditional fixed photovoltaic bracket is the most traditional and widely used bracket system, which mainly uses steel as the load-bearing structure of photovoltaic modules.

[0003] With the development of photovoltaic industry and the improvement of technology level, the disadvantages of traditional photovoltaic support structure have gradually become prominent, including: large land resources are occupied, resulting in serious waste, more support foundations damage vegetation and arable land resources, large amount of steel used in the support and high cost, etc. In addition, for mountainous areas with large slopes and high vegetation, tidal flats with poor geological conditions, fish ponds with deep water levels and large spans, as well as some large sewage treatment plants, parking lots, farmland and other sites, traditional photovoltaic supports can no longer meet the relevant construction needs.

[0004] The proposal of cable-supported flexible photovoltaic bracket provides a good idea for solving the above-mentioned problems. Its technical advantages are mainly reflected in: using prestressed steel strands to replace traditional steel frames as the load-bearing structure of photovoltaic modules. This structural system has the advantages of light weight, strong bearing capacity, fewer pile foundations, short construction period, good heat dissipation performance, and strong spanning ability. It can make full use of the compound utilization rate of land resources and reduce the waste of land resources.

[0005] However, the current cable-supported flexible photovoltaic bracket still has its shortcomings, mainly in that the inclination angle of the photovoltaic module is fixed and it cannot make full use of sunlight to maximize the power generation efficiency. Therefore, it is necessary to develop a photovoltaic bracket structure that has the above advantages of the cable-supported flexible photovoltaic bracket and can make full use of solar energy and effectively improve the power generation efficiency. Summary of the invention

[0006] The main purpose of the present invention is to provide a photovoltaic bracket, a photovoltaic array and a photovoltaic module angle adjustment method to solve the technical problem that the inclination angle of the photovoltaic modules in the photovoltaic array of the existing cable-supported flexible photovoltaic bracket is fixed, the sunlight cannot be tracked in real time, and the solar energy cannot be fully utilized, resulting in low power generation efficiency.

[0007] In order to achieve the above object, the present invention provides a photovoltaic bracket, comprising:

[0008] Two rows of support columns, two rows of support columns are installed side by side on the foundation;

[0009] A first turntable is rotatably mounted on the upper ends of the two rows of supporting columns, and a load-bearing suspension cable anchoring point is provided on the first turntable;

[0010] The load-bearing suspension cable is arranged between two rows of supporting columns, and both ends of the load-bearing suspension cable pass through the load-bearing suspension cable anchoring points and are anchored and connected to the first turntable;

[0011] The solar tracking controller is installed on the supporting column. The solar tracking controller is connected to a control motor, and the control motor is connected to the first turntable. The solar tracking controller senses sunlight and adjusts the rotation angle of the first turntable through the control motor according to the incident angle of the sunlight.

[0012] Furthermore, a triangular steel support is provided on the load-bearing suspension cable. There are three load-bearing suspension cables, and three corner points of the triangular steel support are respectively fastened to the three load-bearing suspension cables.

[0013] Furthermore, a torsion-resistant suspension cable column is provided on both sides of the load-bearing suspension cable corresponding to the triangular steel support. The lower end of the torsion-resistant suspension cable column is fixed on the foundation. The upper ends of the two torsion-resistant suspension cable columns are connected to a torsion-resistant suspension cable, which is firmly connected to the triangular steel support.

[0014] Furthermore, a second turntable is rotatably mounted on the upper end of the torsion-resistant suspension cable column, and an torsion-resistant suspension cable anchoring point is provided on the second turntable. The torsion-resistant suspension cable passes through the torsion-resistant suspension cable anchoring point and is anchored to the second turntable. The second turntable is connected to the solar tracking controller via a control motor.

[0015] Furthermore, a plurality of groups of load-bearing cables are arranged at intervals between the two rows of supporting columns, each group of load-bearing cables includes three load-bearing cables, and both ends of the three load-bearing cables in each group of load-bearing cables are anchored to a first turntable.

[0016] Furthermore, a plurality of triangular steel supports are arranged at intervals on the same group of load-bearing cables along the length direction of the load-bearing cables, and the triangular steel supports at corresponding positions on the plurality of groups of load-bearing cables are connected in series through an anti-torsion cable.

[0017] According to another aspect of the present invention, a photovoltaic array is provided, including a photovoltaic bracket and a photovoltaic module mounted on the photovoltaic bracket, the photovoltaic bracket is the photovoltaic bracket described above in the present invention, and the photovoltaic module is mounted on a load-bearing suspension cable.

[0018] According to another aspect of the present invention, a method for adjusting the angle of a photovoltaic module of the photovoltaic array is provided. The method for adjusting the angle of a photovoltaic module comprises:

[0019] Step S1: The incident angle of the sun relative to the photovoltaic module is detected by the sunlight sensor in the solar tracking controller. The solar tracking controller adjusts the rotation angle of the first turntable by controlling the motor according to the incident angle of the sun, so that the photovoltaic module always maintains the optimal incident angle of the sun.

[0020] Furthermore, the photovoltaic module angle adjustment method further includes:

[0021] Step S2: During the rotation of the first turntable, the solar tracking controller controls the control motor connected to the second turntable to adjust the rotation angle of the second turntable accordingly, so that the anti-torsion suspension cable always remains straight and through the force, so that the entire photovoltaic support remains stable.

[0022] The technical solution of the present invention is applied, by setting a rotatable first turntable at the upper end of two rows of supporting columns, setting a load-bearing suspension cable between the two rows of supporting columns, and passing the two ends of the load-bearing suspension cable through the anchoring point of the load-bearing suspension cable and anchoring it on the first turntable, a tracking type cable-supported flexible photovoltaic bracket is formed; and a solar tracking controller is set to be connected to the first turntable through a control motor. When the photovoltaic bracket is in use, the solar tracking controller senses sunlight and controls the start or stop of the control motor according to the incident angle of sunlight, thereby adjusting the rotation angle of the first turntable so that the photovoltaic component always maintains the best solar incident angle. The photovoltaic bracket has the advantages of light weight, strong bearing capacity, less pile foundation, short construction period, good heat dissipation performance, strong spanning ability, etc. of the cable-supported flexible photovoltaic bracket, and can adjust the inclination angle of the photovoltaic component in real time according to the incident angle of the sun, so that the photovoltaic component tracks the sunlight in real time, thereby improving the power generation efficiency of the photovoltaic component. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 It is a schematic diagram of the oblique structure of the photovoltaic array according to an embodiment of the present invention (the solar tracking controller, the first rotating disk and the second rotating disk are not shown).

[0025] Figure 2 It is a schematic diagram of the structure of a photovoltaic array in an embodiment of the present invention when viewed from above (the solar tracking controller, the first rotating disk and the second rotating disk are not shown).

[0026] Figure 3 The figure is a schematic diagram of the installation structure of the first rotating disk in the photovoltaic array according to an embodiment of the present invention.

[0027] Figure 4 The figure is a schematic diagram of the installation structure of the second rotating disk in the photovoltaic array according to an embodiment of the present invention.

[0028] Figure 5 Schematic diagram of the structure of the first rotating disk in the photovoltaic array according to an embodiment of the present invention.

[0029] Figure 6 Schematic diagram of the structure of the second rotating disk in the photovoltaic array according to an embodiment of the present invention.

[0030] Figure 7 Schematic diagram of the structure of a solar tracking controller in a photovoltaic array according to an embodiment of the present invention.

[0031] The above drawings include the following reference numerals:

[0032] 1. Support column; 2. First turntable; 3. Load-bearing cable; 4. Triangular steel support; 5. Torsion-resistant cable column; 6. Torsion-resistant cable; 7. Second turntable; 8. Photovoltaic module; 21. Load-bearing cable anchorage point; 71. Torsion-resistant cable anchorage point. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the present invention will be described in more comprehensive and detailed manner in conjunction with the accompanying drawings and preferred embodiments below, but the protection scope of the present invention is not limited to the following specific embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0034] Unless otherwise defined, all technical terms used hereinafter have the same meaning as those generally understood by those skilled in the art. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are merely for the convenience of distinguishing the corresponding parts. Similarly, words such as "one" or "an" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0035] Embodiment 1:

[0036] See also Figures 1 to 7, a photovoltaic bracket according to an embodiment of the present invention, the photovoltaic bracket is a tracking cable-supported flexible photovoltaic bracket. As can be seen from the figure, the photovoltaic bracket mainly includes two rows of supporting columns 1, a first turntable 2, a load-bearing suspension cable 3 and a solar tracking controller. Among them, the lower ends of the two rows of supporting columns 1 are installed side by side on the foundation (ground or underwater); the first turntable 2 is rotatably installed on the upper ends of the two rows of supporting columns 1, and a load-bearing suspension cable anchoring point 21 is arranged on the first turntable 2; the load-bearing suspension cable 3 is arranged between the two rows of supporting columns 1, and the two ends of the load-bearing suspension cable 3 pass through the load-bearing suspension cable anchoring point 21 and are anchored and connected to the first turntable 2; the solar tracking controller is installed on the supporting column 1, and the solar tracking controller is connected to a control motor (not shown in the figure), and the control motor is connected to the first turntable 2; the solar tracking controller senses sunlight and adjusts the rotation angle of the first turntable 2 through the control motor according to the incident angle of sunlight. The solar tracking controller can adopt an existing tracker.

[0037] The above photovoltaic bracket is formed by arranging a rotatable first turntable 2 at the upper end of two rows of supporting columns 1, arranging a load-bearing suspension cable 3 between the two rows of supporting columns 1, and anchoring the two ends of the load-bearing suspension cable 3 through the load-bearing suspension cable anchoring point 21 to the first turntable 2, so as to form a tracking type cable-supported flexible photovoltaic bracket; and a solar tracking controller is arranged, and the solar tracker is connected to the first turntable 2 by controlling the motor. When the photovoltaic bracket is used, the photovoltaic assembly 8 is installed on the load-bearing suspension cable 3, the solar tracking controller senses the sunlight, and adjusts the rotation angle of the first turntable 2 by controlling the start or stop of the motor according to the incident angle of the sunlight, so that the photovoltaic assembly 8 always maintains the best solar incident angle. The photovoltaic bracket has the advantages of light weight, strong bearing capacity, less pile foundation, short construction period, good heat dissipation performance, strong spanning ability, etc. of the cable-supported flexible photovoltaic bracket, and can adjust the inclination angle of the photovoltaic assembly 8 in real time according to the incident angle of the sun, so that the photovoltaic assembly 8 can track the sunlight in real time and make full use of the solar energy, thereby effectively improving the power generation efficiency of the photovoltaic assembly 8.

[0038] The photovoltaic bracket effectively solves the problems of fixed inclination angle and insufficient power generation efficiency of photovoltaic components 8 in existing flexible cable-supported photovoltaic brackets, and cleverly combines "tracking" and "cable support". Based on the advantages of existing cable-supported photovoltaic brackets, the power generation efficiency of the photovoltaic system is further improved.

[0039] Further, see Figure 1 and Figure 2 In this embodiment, a triangular steel support 4 is provided on the load-bearing suspension cable 3, and there are three load-bearing suspension cables 3. The three corner points of the triangular steel support 4 are respectively fastened to the three load-bearing suspension cables 3. In this way, by providing the triangular steel support 4 and fastening the three corner points of the triangular steel support 4 to the three load-bearing suspension cables 3, the mid-span deflection of the load-bearing suspension cables 3 can be smoothed.

[0040] See also Figure 1 and Figure 2 In this embodiment, a torsion-resistant suspension cable column 5 is provided on both sides of the load-bearing suspension cable 3 corresponding to the triangular steel support 4, the lower end of the torsion-resistant suspension cable column 5 is fixed on the foundation (ground or bottom of water), and the upper ends of the two torsion-resistant suspension cable columns 5 are connected with an torsion-resistant suspension cable 6, which is tightly connected to the triangular steel support 4. In this way, by setting the torsion-resistant suspension cable 6 connected to the triangular steel support 4, it can be used to constrain the torsion and overturning of each row of photovoltaic modules 8.

[0041] See also Figure 4 In this embodiment, a second turntable 7 is rotatably mounted on the upper end of each anti-torsion cable column 5, and an anti-torsion cable anchoring point 71 is provided on the second turntable 7. The anti-torsion cable 6 passes through the anti-torsion cable anchoring point 71 and is anchored to the second turntable 7. The second turntable 7 is connected to the solar tracking controller through a control motor.

[0042] During the rotation of the first turntable 2, the position of the anti-torsion cable 6 will change; by setting the above-mentioned second turntable 7, and connecting the second turntable 7 to the solar tracking controller through a control motor; when the first turntable 2 rotates, the solar tracking controller adjusts the rotation angle of the second turntable 7 accordingly through the control motor connected to the second turntable 7, so that the anti-torsion cable 6 always remains straight and through the force, so that the entire photovoltaic bracket remains stable.

[0043] See also Figure 1 and Figure 2 In this embodiment, a plurality of groups of load-bearing suspension cables 3 are arranged between two rows of supporting columns 1, each group of load-bearing suspension cables 3 includes three load-bearing suspension cables 3, and both ends of the three load-bearing suspension cables 3 in each group of load-bearing suspension cables 3 are anchored to a first rotating disk 2. A plurality of photovoltaic modules 8 are installed on each group of load-bearing suspension cables 3 to form a photovoltaic array consisting of a plurality of rows of photovoltaic modules 8.

[0044] Furthermore, on the same group of load-bearing suspension cables 3, a plurality of triangular steel supports 4 are arranged at intervals along the length direction of the load-bearing suspension cables 3, and the corresponding triangular steel supports 4 on the plurality of groups of load-bearing suspension cables 3 are connected in series through a torsion-resistant suspension cable 6. Figure 1 and Figure 2Four triangular steel supports 4 of the same size are arranged at the cross sections 1 / 5, 2 / 5, 3 / 5 and 4 / 5 along the span direction of the load-bearing suspension cable 3 (the same at the cross sections 1 / 5 and 4 / 5, and the same at the cross sections 2 / 5 and 3 / 5). Under the joint action of the three load-bearing suspension cables 3 and the four triangular steel supports 4, the flatness of the mid-span deflection of the load-bearing suspension cable 3 is achieved. Two rows of eight torsion-resistant suspension cable columns 5 are arranged on the side of the load-bearing suspension cable 3. The eight torsion-resistant suspension cable columns 5 are located on the outside of the multiple rows of photovoltaic modules 8 and at the cross sections 1 / 5, 2 / 5, 3 / 5 and 4 / 5 along the span direction of the load-bearing suspension cable 3. Two torsion-resistant suspension cable columns 5 are arranged in each cross section, and the lower ends of the eight torsion-resistant suspension cable columns 5 are fixed on the ground or underwater foundation.

[0045] Specifically, the shapes of the first turntable 2 and the second turntable 7 can be circular, elliptical, etc. The first turntable 2 and the second turntable 7 can be turntables of different shapes, or they can be of uniform specifications for easy production and use. In particular, when encountering strong winds and bad weather, the first turntable 2 and the second turntable 7 can be controlled to rotate so that the surface of the photovoltaic module 8 remains parallel to the ground, thereby minimizing the wind load; when encountering bad weather such as heavy snow, the first turntable 2 and the second turntable 7 can be controlled to rotate so that the photovoltaic module 8 maintains a large inclination angle, so that the accumulated snow slides off quickly, thereby reducing the snow load borne by the photovoltaic module 8.

[0046] Specifically, the solar tracking controller automatically calculates the azimuth and altitude angle of the sun's movement trajectory and the location at any time based on the local longitude, latitude, and time. The solar tracking controller can sense sunlight and control the angles of the first turntable 2 and the second turntable 7 through the corresponding control motor. During the tracking stage, the solar tracking controller automatically issues instructions based on the tracking range to control the operation of the control motor, and the control motor controls the rotation of the first turntable 2 and the second turntable 7. Adjust the tracking angle at regular intervals (usually about 5-10 minutes, and the solar angle error can be controlled to be <2° in all weather and temperature) so that the photovoltaic module 8 is always aligned with the current position of the sun; and keep the anti-torsion suspension cable 6 straight and through at all times.

[0047] Embodiment 2:

[0048] See also Figure 1 and Figure 2 A photovoltaic array according to an embodiment of the present invention includes a photovoltaic bracket and a photovoltaic component 8 mounted on the photovoltaic bracket. The photovoltaic bracket is the photovoltaic bracket of the above-mentioned embodiment 1 of the present invention. The photovoltaic component 8 in the photovoltaic bracket is fixedly mounted on the load-bearing suspension cable 3. The specific structure of the photovoltaic bracket is as described in the embodiment 1 of the present invention, and will not be repeated here.

[0049] The photovoltaic array described above can adjust the incident angle of sunlight relative to the photovoltaic module 8 in real time and maintain the overall stability of the photovoltaic support by installing the photovoltaic module 8 on the load-bearing suspension cable 3 of the tracking cable-supported flexible photovoltaic support of Example 1 of the present invention, through the rotation of the first turntable 2 and the second turntable 7. The photovoltaic array is light in weight, strong in bearing capacity, less in pile foundation, short in construction period, good in heat dissipation performance, strong in spanning capacity, and can adjust the inclination angle of the photovoltaic module 8 in real time according to the incident angle of the sun, so that the photovoltaic module 8 can track the sunlight in real time and make full use of the solar energy, thereby effectively improving the power generation efficiency of the photovoltaic module 8.

[0050] The angle adjustment method of the photovoltaic assembly 8 in the photovoltaic array is as follows:

[0051] The incident angle of the sun relative to the photovoltaic assembly 8 is detected by the sunlight sensor in the solar tracking controller. The solar tracking controller controls the start and stop of the control motor according to the incident angle of the sun, and adjusts the rotation angle of the first rotating disk 2 so that the photovoltaic assembly 8 always maintains the best incident angle of the sun;

[0052] During the rotation of the first turntable 2, the solar tracking controller simultaneously controls another control motor connected to the second turntable 7, and adjusts the rotation angle of the second turntable 7 accordingly, so that the anti-torsion cable 6 always remains straight and through, so that the entire photovoltaic bracket remains stable.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic support, characterized in that: include: Two rows of support columns (1), the two rows of support columns (1) are installed side by side on the foundation; A first rotating disk (2) is rotatably mounted on the upper ends of the two rows of supporting columns (1), and a load-bearing suspension cable anchoring point (21) is provided on the first rotating disk (2); The load-bearing suspension cable (3) is arranged between the two rows of support columns (1), and the two ends of the load-bearing suspension cable (3) pass through the load-bearing suspension cable anchoring points (21) and are anchored to the first turntable (2); a triangular steel support (4) is arranged on the load-bearing suspension cable (3), and there are three load-bearing suspension cables (3). The three corner points of the triangular steel support (4) are respectively fastened to the three load-bearing suspension cables (3); a torsion-resistant suspension cable column (5) is arranged on both sides of the load-bearing suspension cable (3) corresponding to the triangular steel support (4), and the torsion-resistant suspension cable column (5) is arranged on the two sides of the load-bearing suspension cable (3) corresponding to the triangular steel support (4). The lower end of the suspension cable column (5) is fixed on the foundation, and the upper ends of the two anti-torsion suspension cable columns (5) are connected to an anti-torsion suspension cable (6), and the anti-torsion suspension cable (6) is tightly connected to the triangular steel support (4); a solar tracking controller is installed on the support column (1), and the solar tracking controller is connected to a control motor, and the control motor is connected to the first turntable (2), and the solar tracking controller senses sunlight and adjusts the rotation angle of the first turntable (2) through the control motor according to the incident angle of sunlight; A second rotating disk (7) is rotatably mounted on the upper end of the anti-torsion suspension cable column (5); an anti-torsion suspension cable anchor point (71) is provided on the second rotating disk (7); the anti-torsion suspension cable (6) passes through the anti-torsion suspension cable anchor point (71) and is anchored to the second rotating disk (7); the second rotating disk (7) is connected to the solar tracking controller via a control motor; A plurality of groups of the load-bearing cables (3) are arranged at intervals between the two rows of the supporting columns (1), each group of the load-bearing cables (3) comprises three load-bearing cables (3), and both ends of the three load-bearing cables (3) in each group of the load-bearing cables (3) are anchored to one of the first rotating disks (2).

2. The photovoltaic bracket according to claim 1, characterized in that: A plurality of the triangular steel supports (4) are arranged at intervals along the length direction of the load-bearing cables (3) on the same group of the load-bearing cables (3); the triangular steel supports (4) at corresponding positions on the plurality of groups of the load-bearing cables (3) are connected in series via one anti-torsion cable (6).

3. A photovoltaic array, comprising a photovoltaic support and a photovoltaic assembly (8) mounted on the photovoltaic support, characterized in that: The photovoltaic bracket is the photovoltaic bracket according to any one of claims 1 to 2, and the photovoltaic assembly (8) is installed on the load-bearing suspension cable (3).

4. A method for adjusting the angle of a photovoltaic module of a photovoltaic array as claimed in claim 3, characterized in that: The photovoltaic module angle adjustment method comprises: Step S1: The incident angle of the sun relative to the photovoltaic module (8) is detected by a sunlight sensor in the solar tracking controller, and the solar tracking controller adjusts the rotation angle of the first rotating disk (2) by controlling the motor according to the incident angle of the sun, so that the photovoltaic module (8) always maintains the optimal incident angle of the sun.

5. The photovoltaic module angle adjustment method according to claim 4, characterized in that: The photovoltaic module angle adjustment method further comprises: Step S2: During the rotation of the first turntable (2), the solar tracking controller controls the control motor connected to the second turntable 7 to adjust the rotation angle of the second turntable (7) accordingly, so that the anti-torsion suspension cable (6) always remains straight and through, and the entire photovoltaic support remains stable.

Images