Two-dimensional adjustable windproof photovoltaic support and adjusting method

Abstract

The invention relates to a two-dimensional adjustable windproof photovoltaic support and an adjusting method. The bottom end of a stand column is vertically fixed to the ground, and the top end of the stand column is connected with the center position of an oblique beam through a rotating structure; on the bottom surface, facing the ground, of the assembly tray, the first side edge and the third side edge as well as the second side edge and the fourth side edge form two relatively parallel side edge groups respectively; a first arc-shaped beam is mounted on each of the first side edge and the third side edge; the two ends of the oblique beam penetrate through the semicircular spaces of the two first arc-shaped beams and then are connected with the second arc-shaped beam, and the connecting position is close to the end of the second arc-shaped beam. A photovoltaic module is embedded in the surface, facing the sky, of the module tray; adaptive adjustment is performed according to strong wind and non-strong wind conditions, and when strong wind comes, the photovoltaic module can uniformly distribute wind pressure, reduce generation of vortexes and effectively resist the strong wind by adjusting the angle; and in case of non-strong wind, the photovoltaic module can always face the sun at an optimal angle, so that solar radiation is received to the maximum extent, and the power generation efficiency is improved.

Description

Technical Field

[0001] The invention relates to a two-dimensionally adjustable windproof photovoltaic support and an adjustment method, and belongs to the field of photovoltaic power generation. Background Art

[0002] Photovoltaic power generation system, as a clean energy technology, has been widely used in recent years. However, as an important structure supporting photovoltaic modules, the stability and durability of photovoltaic brackets directly affect the operating efficiency and safety of the entire system. Strong wind is one of the main natural factors affecting the stability of photovoltaic brackets, especially in coastal areas, mountainous areas and other windy environments, the impact of strong wind on photovoltaic brackets is particularly significant.

[0003] The impact of strong winds on photovoltaic brackets is mainly reflected in the following aspects: 1. Structural deformation and damage: Strong winds act on the surface of photovoltaic modules, generating large wind loads, which may cause deformation or even damage to the bracket structure. Especially in areas with high wind speeds, the support rods, connectors and other components of the bracket are prone to bending, breaking and other phenomena. 2. Vibration and fatigue: The vibration caused by strong winds can cause fatigue damage to the bracket structure. Long-term wind vibration may loosen the bracket connectors, reduce the overall stability of the structure, and even cause partial or overall collapse. 3. Overturning risk: Strong winds may produce overturning moments on photovoltaic brackets, especially when the bracket foundation design is unreasonable or the foundation is unstable, the bracket may overturn, causing damage to the photovoltaic modules or system failure. 4. Component shedding: Under the action of strong winds, the connection between the photovoltaic module and the bracket may loosen, causing the component to fall off, which not only affects the power generation efficiency, but also may pose a threat to the surrounding environment and personnel safety.

[0004] The currently widely used solution for flat single-axis brackets to deal with strong winds is to adjust the photovoltaic modules to be parallel to the ground. In practice, this solution has a certain effect, but it cannot completely prevent strong winds from damaging photovoltaic modules. The cause of the damage is that when strong winds pass through the photovoltaic array, vortices will be generated at the edge and in the array, and the vortices make the wind protection solution partially ineffective. In order to reduce the damage caused by strong winds, there are currently many related designs. The application with publication number CN117375502A proposes a windproof photovoltaic bracket, which reduces wind loads by making the photovoltaic panels horizontal and lowering the height of the photovoltaic panels. The application with publication number CN112928971 A proposes a wind-resistant and shock-proof photovoltaic bracket, which increases the stability of the bracket by installing mass balls and resistors in the bracket.

[0005] However, these applications cannot completely solve the problems caused by strong winds to traditional brackets, especially the vortex problem. Therefore, it is necessary to propose a new type of windproof photovoltaic bracket, which can not only withstand high wind speeds, but also improve the power generation efficiency of photovoltaic panels. Summary of the invention

[0006] The present invention provides a two-dimensionally adjustable windproof photovoltaic support and an adjustment method, which can be adjusted under both strong wind and non-strong wind conditions, and can not only resist high wind speeds but also improve the power generation efficiency of photovoltaic panels.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] A two-dimensionally adjustable windproof photovoltaic support, comprising a support body, the support body comprising a component tray, a photovoltaic component, an inclined beam, a column, a first curved beam, a second curved beam and a rotating structure, the bottom end of the column is vertically fixed to the ground, and the top end of the column is connected to the center position of the inclined beam through the rotating structure; on the bottom surface of the component tray facing the ground, four side edges are defined in sequence as a first side edge, a second side edge, a third side edge and a fourth side edge, and the first side edge and the third side edge, and the second side edge and the fourth side edge respectively constitute two groups of relatively parallel side edge groups; a first curved beam is respectively installed on the first side edge and the third side edge, and two ends of the second curved beam are respectively fixed to the center of the first side edge and the third side edge; after the two ends of the inclined beam pass through the semicircular spaces of the two first curved beams, they are connected to the second curved beam, and the connection is close to the end of the second curved beam; the photovoltaic component is embedded in the surface of the component tray facing the sky;

[0009] When the photovoltaic assembly is embedded in the assembly tray, a first pressure sensor is arranged between the photovoltaic assembly and the first side, a second pressure sensor is arranged between the photovoltaic assembly and the second side, a third pressure sensor is arranged between the photovoltaic assembly and the third side, and a fourth pressure sensor is arranged between the photovoltaic assembly and the fourth side;

[0010] Furthermore, it also includes a drive control system, which includes a first motor, a second motor, a first steel cable, a second steel cable and a control unit.

[0011] One end of the first steel cable is embedded in the first arc-shaped beam, and the other end thereof is connected to the motor shaft of the first motor;

[0012] One end of the second steel cable is embedded in the second arc beam, and the other end thereof is connected to the motor shaft of the second motor;

[0013] The control unit is electrically connected to the first motor and the second motor at the same time;

[0014] Furthermore, the first motor is electrically connected to the first reducer at the same time, and the second motor is electrically connected to the second reducer at the same time;

[0015] Further, the first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor are all electrically connected to the control unit;

[0016] Furthermore, the control unit is a PLC or a single chip microcomputer;

[0017] Further, the rotating structure includes a first rotating structure, a first telescopic arm, a second rotating structure and a second telescopic arm, the first rotating structure is fixed at the top of the column, the second rotating structure is fixed at the center of the inclined beam, the first rotating structure is rotatably connected to one end of the first telescopic arm, the other end of the first telescopic arm is rotatably connected to one end of the second telescopic arm, and the second rotating structure is rotatably connected to the other end of the second telescopic arm;

[0018] Furthermore, the first rotating structure is the same as the second rotating structure, and both include a base, a rubber ring, a shell, a rotating ball, and a connecting rod, the rubber ring is mounted on the base, the rotating ball is embedded in the rubber ring, the shell is sleeved outside the rubber ring, one end of the connecting rod is fixed on the rotating ball in the shell, and the other end extends out of the shell;

[0019] The other end of the connecting rod of the first rotating structure is connected to one end of the first telescopic arm, and the other end of the connecting rod of the second rotating structure is connected to the other end of the second telescopic arm;

[0020] Furthermore, the support body is made of carbon steel, and the first steel cable and the second steel cable are made of stainless steel;

[0021] Using the adjustment method of the two-dimensionally adjustable windproof photovoltaic bracket, the first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor transmit the collected real-time wind pressure to the control unit of the first drive control system, the control unit starts to perform calculations, and sends command signals to the first motor and the second motor to adjust the first curved beam and the second curved beam;

[0022] Furthermore, in a strong wind condition, the value measured by the first pressure sensor is set to P1, the value measured by the second pressure sensor is set to P2, the value measured by the third pressure sensor is set to P3, and the value measured by the fourth pressure sensor is set to P4, and the first curved beam and the second curved beam are adjusted so that P1+P2+P3+P4 is minimized;

[0023] In non-strong wind conditions, the first curved beam is adjusted to track the solar altitude angle, and the second curved beam is adjusted to track the solar azimuth angle.

[0024] Through the above technical solution, compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The two-dimensionally adjustable windproof photovoltaic bracket provided by the present invention has better adaptability to strong winds. Its design realizes two-dimensional adjustment. When strong winds come, the photovoltaic components can be adjusted to be parallel to the wind direction, thereby minimizing wind resistance and protecting the photovoltaic components and brackets;

[0026] 2. The two-dimensionally adjustable windproof photovoltaic bracket provided by the present invention can track the solar altitude angle and solar azimuth angle under non-strong wind conditions, greatly improving the power generation efficiency of photovoltaic modules;

[0027] 3. The adjustment method of the two-dimensionally adjustable windproof photovoltaic bracket provided by the present invention performs adaptive adjustments according to strong wind and non-strong wind conditions. When strong winds come, the photovoltaic components can evenly distribute wind pressure and reduce the generation of vortices by adjusting the angles, thereby effectively resisting strong winds. When there are non-strong winds, the photovoltaic components can always face the sun at the best angle to maximize the reception of solar radiation and improve power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Figure 1 It is a structural schematic diagram of the bracket body in a preferred embodiment provided by the present invention;

[0030] Figure 2 It is a schematic diagram of electrical connection between the support body and the drive control system in a preferred embodiment provided by the present invention;

[0031] Figure 3 is a front view of the installation of the pressure sensor in the preferred embodiment provided by the present invention;

[0032] Figure 4 is a side view of the installation of the pressure sensor in the preferred embodiment provided by the present invention;

[0033] Figure 5 It is a structural schematic diagram of the rotating structure in the preferred embodiment provided by the present invention.

[0034] In the figure: 1 is a component tray, 2 is a photovoltaic component, 3 is a first arc beam, 4 is an inclined beam, 5 is a second arc beam, 6 is a column, 7 is a first motor, 8 is a first reducer, 9 is a first steel cable, 10 is a second motor, 11 is a second reducer, 12 is a second steel cable, 13 is a control unit, 14 is a bracket body, 15 is a first pressure sensor, 16 is a second pressure sensor, 17 is a third pressure sensor, 18 is a fourth pressure sensor, 19 is a rotating structure, 20 is a base, 21 is a shell, and 22 is a connecting rod. DETAILED DESCRIPTION

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "left side", "right side", "upper part", "lower part", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution by example, and do not limit the scope of protection of the present invention.

[0036] As described in the background technology, traditional photovoltaic windproof brackets use horizontal lifting or adding resistors in the structure to achieve the purpose of wind resistance of the bracket. However, if strong winds generate vortices at the edge of the photovoltaic array or in the array when passing through the photovoltaic bracket, the traditional photovoltaic windproof bracket cannot withstand such conditions, which not only fails to improve the power generation effect of the photovoltaic panels, but also causes damage to the photovoltaic bracket.

[0037] In order to solve the above problems, the present application first provides a two-dimensionally adjustable windproof photovoltaic bracket, including a bracket body 14, the overall structure of the bracket body is as follows: Figure 1 As shown, it includes a component tray 1, a photovoltaic component 2, an inclined beam 4, a column 6, a first curved beam 3, a second curved beam 5 and a rotating structure 19. The bottom end of the column is vertically fixed on the ground, and the top end of the column is connected to the center position of the inclined beam through the rotating structure; the setting of the rotating structure allows the inclined beam to rotate at a full angle relative to the column.

[0038] On the bottom surface of the component tray facing the ground, for the convenience of explanation, the four sides are defined as the first side, the second side, the third side and the fourth side in sequence. Figure 1 From the perspective, the first side is located at the top, the second side is located at the right, the third side is located at the bottom, and the fourth side is located at the left. The first side and the third side, and the second side and the fourth side respectively form two relatively parallel side groups; a first arc beam is installed on the first side and the third side respectively, and the two ends of the second arc beam are respectively fixed to the center of the first side and the third side; the two ends of the oblique beam are respectively passed through the semicircular spaces of the two first arc beams, and then connected to the second arc beam, and the connection is close to the end of the second arc beam.

[0039] There are several innovative points in the structural design of this part. The first is the first curved beam and the second curved beam. As can be seen from the figure, the curved beams are all semicircular structures, mainly to be able to apply force to the component tray to drive the tray to adjust the angle. The traditional windproof bracket adjusts the angle by vertically rising and falling, which cannot minimize wind resistance. The semicircular curved beam has more points of force to choose from when applying force to the photovoltaic component. Different points on the curved beam have different distances from the ground. Therefore, the appropriate tension application point can be selected according to the real-time working conditions. With the rotating structure, the photovoltaic component is embedded on the surface of the component tray facing the sky, which can realize the free adjustment of the photovoltaic component at multiple angles. Figure 1 The angle of view applies force to the first curved beam and the second curved beam, so that the photovoltaic module can be adjusted in the horizontal direction (left and right swing) and the vertical direction (up and down swing). When strong winds come, the photovoltaic module can adjust the angle to keep the photovoltaic module consistent with the wind direction, reduce the generation of vortices, and evenly distribute wind pressure, thereby minimizing wind resistance and effectively resisting strong winds. It avoids the problem that traditional flat single-axis brackets are prone to vortex effects under strong winds, thereby solving the damage caused by wind pressure to photovoltaic modules and brackets, and significantly reducing the risk of photovoltaic modules being damaged by strong winds. At the same time, the hollow design of the curved beam further reduces manufacturing costs.

[0040] In this application, the angle adjustment of the photovoltaic module is realized by automatic adjustment through the drive control system, such as Figure 2 As shown, it includes a first motor 7, a second motor 10, a first steel cable 9, a second steel cable 12 and a control unit 13. One end of the first steel cable is embedded in the first curved beam, and the other end thereof is connected to the motor shaft of the first motor; one end of the second steel cable is embedded in the second curved beam, and the other end thereof is connected to the motor shaft of the second motor; the control unit is electrically connected to the first motor and the second motor at the same time. The first curved beam and the second curved beam are driven by the matching first steel cable and the second steel cable, and are controlled by the first motor and the second motor. Since the adjustment accuracy needs to be ensured when adjusting the angle of the photovoltaic module, the first motor is also matched with a first reducer 8, and the second motor is matched with a second reducer 11.

[0041] When the photovoltaic module is embedded in the module tray, a plurality of pressure sensors are arranged between the photovoltaic module and the module tray. Preferably, the present application arranges four pressure sensors, namely, a first pressure sensor 15, a second pressure sensor 16, a third pressure sensor 17 and a fourth pressure sensor 18. Figure 3-Figure 4As shown, the first pressure sensor is arranged between the photovoltaic assembly and the first side, the second pressure sensor is arranged between the photovoltaic assembly and the second side, the third pressure sensor is arranged between the photovoltaic assembly and the third side, and the fourth pressure sensor is arranged between the photovoltaic assembly and the fourth side. The first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor are all electrically connected to the control unit.

[0042] The pressure sensors are arranged on the four sides of the photovoltaic module, which can monitor the wind pressure distribution in real time. The drive control system can dynamically adjust the angle between the first curved beam and the second curved beam in real time according to the feedback of the pressure sensor to ensure that the photovoltaic module is always in the best position (the position with the lowest wind pressure). This design not only reduces the need for manual intervention, but also improves the reliability and response speed of the system. As for the control unit, PLC or single-chip microcomputer can be selected.

[0043] In the specific implementation of the aforementioned position with the minimum wind pressure, the value measured by the first pressure sensor is P1, the value measured by the second pressure sensor is P2, the value measured by the third pressure sensor is P3, and the value measured by the fourth pressure sensor is P4, and the first curved beam and the second curved beam are adjusted to minimize P1+P2+P3+P4. The drive control system continuously tracks the minimum value of P1+P2+P3+P4.

[0044] In addition to enhancing wind resistance through two-dimensional adjustability, the bracket body provided in the present application can also improve power generation efficiency. In non-strong wind conditions, the first curved beam can track the solar altitude angle, and the second curved beam can track the solar azimuth angle. This dual-axis tracking system can adjust the photovoltaic module to always face the sun at the best angle, maximize the reception of solar radiation, and thus improve power generation efficiency.

[0045] The above description also mentions the rotating structure, which is the connecting structure between the inclined beam and the column, and is also a key component to enable the photovoltaic module to rotate freely. This application provides a preferred embodiment, Figure 5As shown, the rotating structure includes a first rotating structure, a first telescopic arm, a second rotating structure and a second telescopic arm. The first rotating structure is fixed at the top of the column, and the second rotating structure is fixed at the center of the inclined beam. The first rotating structure is rotatably connected to one end of the first telescopic arm, and the other end of the first telescopic arm is rotatably connected to one end of the second telescopic arm. The second rotating structure is rotatably connected to the other end of the second telescopic arm. The first rotating structure is the same as the second rotating structure, and both include a base 20, a rubber ring, a shell 21, a rotating ball and a connecting rod 22. The rubber ring is installed on the base, the rotating ball is embedded in the rubber ring, and the shell is sleeved outside the rubber ring. One end of the connecting rod is fixed to the rotating ball in the shell, and the other end extends out of the shell; the other end of the connecting rod of the first rotating structure is connected to one end of the first telescopic arm, and the other end of the connecting rod of the second rotating structure is connected to the other end of the second telescopic arm.

[0046] In order to ensure the rigidity of the entire structure, the bracket body is made of carbon steel, and the first steel cable and the second steel cable are made of stainless steel.

[0047] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0048] The meaning of "and / or" described in this application means that the situations where each exists alone or both exist at the same time are included.

[0049] The term “connection” as used in this application may mean a direct connection between components or an indirect connection between components via other components.

[0050] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A two-dimensionally adjustable windproof photovoltaic support, characterized in that: The invention comprises a support body, wherein the support body comprises a component tray, a photovoltaic component, an inclined beam, a column, a first curved beam, a second curved beam and a rotating structure, wherein the bottom end of the column is vertically fixed on the ground, and the top end of the column is connected to the center position of the inclined beam through the rotating structure; on the bottom surface of the component tray facing the ground, four side edges are defined as a first side edge, a second side edge, a third side edge and a fourth side edge in sequence, and the first side edge and the third side edge, and the second side edge and the fourth side edge respectively constitute two groups of relatively parallel side edge groups; a first curved beam is respectively installed on the first side edge and the third side edge, and two ends of the second curved beam are respectively fixed to the center of the first side edge and the third side edge; after the two ends of the inclined beam respectively pass through the semicircular spaces of the two first curved beams, they are connected to the second curved beam, and the connection is close to the end of the second curved beam; the photovoltaic component is embedded in the surface of the component tray facing the sky; When the photovoltaic component is embedded in the component tray, a first pressure sensor is set between the photovoltaic component and the first side, a second pressure sensor is set between the photovoltaic component and the second side, a third pressure sensor is set between the photovoltaic component and the third side, and a fourth pressure sensor is set between the photovoltaic component and the fourth side.

2. The two-dimensionally adjustable windproof photovoltaic support according to claim 1 is characterized in that: Also included is a drive control system, which includes a first motor, a second motor, a first steel cable, a second steel cable and a control unit, One end of the first steel cable is embedded in the first arc-shaped beam, and the other end thereof is connected to the motor shaft of the first motor; One end of the second steel cable is embedded in the second arc beam, and the other end thereof is connected to the motor shaft of the second motor; The control unit is electrically connected to the first motor and the second motor at the same time.

3. The two-dimensionally adjustable windproof photovoltaic support according to claim 2 is characterized in that: The first motor is electrically connected to the first reducer at the same time, and the second motor is electrically connected to the second reducer at the same time.

4. The two-dimensionally adjustable windproof photovoltaic support according to claim 2 is characterized in that: The first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor are all electrically connected to the control unit.

5. The two-dimensionally adjustable windproof photovoltaic support according to claim 2, characterized in that: The control unit is a PLC or a single chip microcomputer.

6. The two-dimensionally adjustable windproof photovoltaic support according to claim 1, characterized in that: The rotating structure includes a first rotating structure, a first telescopic arm, a second rotating structure and a second telescopic arm. The first rotating structure is fixed at the top of the column, and the second rotating structure is fixed at the center of the inclined beam. The first rotating structure is rotatably connected to one end of the first telescopic arm, and the other end of the first telescopic arm is rotatably connected to one end of the second telescopic arm. The second rotating structure is rotatably connected to the other end of the second telescopic arm.

7. The two-dimensionally adjustable windproof photovoltaic support according to claim 6, characterized in that: The first rotating structure is the same as the second rotating structure, and both include a base, a rubber ring, a shell, a rotating ball, and a connecting rod. The rubber ring is mounted on the base, the rotating ball is embedded in the rubber ring, the shell is sleeved outside the rubber ring, one end of the connecting rod is fixed on the rotating ball in the shell, and the other end extends out of the shell. The other end of the connecting rod of the first rotating structure is connected to one end of the first telescopic arm, and the other end of the connecting rod of the second rotating structure is connected to the other end of the second telescopic arm.

8. The two-dimensionally adjustable windproof photovoltaic support according to claim 2, characterized in that: The bracket body is made of carbon steel, and the first steel cable and the second steel cable are made of stainless steel.

9. The method for adjusting the two-dimensionally adjustable windproof photovoltaic support according to any one of claims 1 to 8 is characterized in that: The first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor transmit the collected real-time wind pressure to the control unit of the first drive control system. The control unit starts to perform calculations and sends command signals to the first motor and the second motor to adjust the first curved beam and the second curved beam.

10. The adjustment method of the two-dimensionally adjustable windproof photovoltaic support according to claim 9, characterized in that: Under strong wind conditions, the value measured by the first pressure sensor is P1, the value measured by the second pressure sensor is P2, the value measured by the third pressure sensor is P3, and the value measured by the fourth pressure sensor is P4. The first curved beam and the second curved beam are adjusted to minimize P1+P2+P3+P4. In non-strong wind conditions, the first curved beam is adjusted to track the solar altitude angle, and the second curved beam is adjusted to track the solar azimuth angle.

Images