Flexible photovoltaic racking and photovoltaic systems

Abstract

The application relates to a flexible photovoltaic support and a photovoltaic system, the flexible photovoltaic support is used for supporting and fixing a photovoltaic assembly, the flexible photovoltaic support comprises a load-bearing cable and a damping mechanism, the load-bearing cable is used for being connected with the photovoltaic assembly; the load-bearing cable is connected with at least one damping mechanism; the damping mechanism comprises a damper and an elastic piece; one end of the damper is connected with the load-bearing cable, and the other end of the damper is connected with a surface to be installed; one end of the elastic piece is connected with the load-bearing cable, and the other end of the elastic piece is connected with the surface to be installed. In this way, the photovoltaic assembly can be protected, stable power generation of the photovoltaic assembly can be ensured, and when the flexible photovoltaic support is applied to the photovoltaic system, the power generation capacity of the photovoltaic system can be ensured.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a flexible photovoltaic bracket and photovoltaic system. Background Technology

[0002] Solar cells, also known as photovoltaic cells, are semiconductor devices that directly convert sunlight into electrical energy. Because they are green and environmentally friendly products that do not cause pollution, and because solar energy is a renewable resource, solar cells are a new type of battery with broad development prospects.

[0003] Photovoltaic modules are the smallest units used in photovoltaic (PV) devices. PV modules are typically supported and fixed using PV mounting systems. Due to their excellent flexibility, flexible mounting systems can adapt to more complex and varied sites and environments, making them the most common type of PV mounting system. Current flexible mounting systems usually involve fixing taut steel cables to a steel frame, and then mounting the PV modules onto these cables. Because PV modules are relatively large, they are often fixed to multiple taut steel cables simultaneously.

[0004] However, in practical applications, it has been found that the stability of flexible supports is worse than that of traditional rigid supports, and they are more sensitive to the impact of wind loads. When the wind speed is high, the steel cable structure of the flexible support will generate irregular vibrations and large deflections, which can lead to damage such as microcracks in the solar cells of the photovoltaic modules, resulting in a significant decrease in the power generation of the photovoltaic modules. Utility Model Content

[0005] Based on this, this application provides a flexible photovoltaic support and photovoltaic system that can effectively suppress the vibration of the load-bearing cable, enhance the protection of the photovoltaic module, and ensure the stable power generation of the photovoltaic module, thereby ensuring the power generation of the photovoltaic system.

[0006] An embodiment of the first aspect of this application provides a flexible photovoltaic support for supporting and fixing photovoltaic modules, the flexible photovoltaic support comprising:

[0007] A load-bearing cable is used to connect to the photovoltaic module; the load-bearing cable is connected to at least one vibration damping mechanism;

[0008] The vibration damping mechanism includes a damper and an elastic element; one end of the damper is connected to the load-bearing cable, and the other end of the damper is connected to the surface to be installed; one end of the elastic element is connected to the load-bearing cable, and the other end of the elastic element is connected to the surface to be installed.

[0009] In one embodiment, the damper is provided with a first connector at one end near the load-bearing cable, and the first connector is sleeved on the load-bearing cable.

[0010] In one embodiment, a second connector is provided at one end of the elastic member near the load-bearing cable, and the second connector is sleeved on the load-bearing cable.

[0011] In one embodiment, the vibration damping mechanism further includes a fixing member, and the ends of the damper and the elastic member away from the load-bearing cable are both connected to the fixing member; the fixing member is fixed to the surface to be installed.

[0012] In one embodiment, the fastener includes two mounting bases, with one end of the damper away from the load-bearing cable connected to one of the mounting bases, and the other end of the elastic member away from the load-bearing cable connected to the other mounting base.

[0013] In one embodiment, the load-bearing cable is connected to a vibration damping mechanism located at the middle of the load-bearing cable along its length.

[0014] Alternatively, the load-bearing cable is connected to multiple vibration damping mechanisms; the multiple vibration damping mechanisms are spaced apart along the length of the load-bearing cable.

[0015] In one embodiment, the damping force of the damper is adjustable;

[0016] And / or, the damper includes a piston rod, the piston rod being covered with a dust cover;

[0017] And / or, the damper includes a magnetorheological damper;

[0018] And / or, the elastic element includes an elastic block.

[0019] In one embodiment, the system further includes a support structure fixed to the surface to be installed; a bearing surface is provided on the side of the support structure away from the surface to be installed, the bearing surface forming an angle with the surface to be installed, and the load-bearing cable is fixedly connected to the bearing surface by an anchor.

[0020] In one embodiment, the flexible photovoltaic support includes at least two support structures and at least two load-bearing cables; the at least two support structures are arranged parallel to each other and spaced apart along the length direction of the load-bearing cables; the at least two load-bearing cables are arranged parallel to each other and spaced apart and bridging the at least two support structures; and at least one load-bearing cable is connected to the vibration damping mechanism.

[0021] An embodiment of the second aspect of this application provides a photovoltaic system, including a photovoltaic module, and the photovoltaic system further includes the flexible photovoltaic support described in any of the above embodiments; the photovoltaic module is connected to the load-bearing cable.

[0022] The aforementioned flexible photovoltaic (PV) bracket and system utilize a flexible PV bracket to support and fix PV modules. The flexible PV bracket includes a load-bearing cable and a vibration damping mechanism. The load-bearing cable connects to the PV modules, and the vibration damping mechanism includes a damper and an elastic element. One end of the damper is connected to the load-bearing cable, and the other end is connected to the mounting surface. One end of the elastic element is connected to the load-bearing cable, and the other end is connected to the mounting surface. In other words, the vibration damping mechanism uses a combination of dampers and elastic elements to reduce vibration. When the load-bearing cable experiences irregular vibration due to wind loads, the damping force of the damper and the elastic force of the elastic element effectively dissipate the vibration energy of the load-bearing cable, effectively suppressing its vibration and reducing the probability of damage to the PV modules. When the load-bearing cable deforms due to snow loads, the damper and elastic element effectively suppress its deformation, reducing PV module deformation and enhancing protection, thus ensuring stable power generation. When the flexible PV bracket is applied to a PV system, it guarantees the power generation of the system. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure connecting the flexible photovoltaic support and the photovoltaic module according to an embodiment of this application.

[0024] Figure 2 for Figure 1 The diagram shows the vibration damping mechanism and load-bearing cable in the flexible photovoltaic support.

[0025] Figure 3 for Figure 1 The diagram shows the equivalent force model of the vibration damping mechanism and the load-bearing cable in the flexible photovoltaic support under wind and snow loads.

[0026] Figure 4 The graph shows the displacement versus time of the load-bearing cable under different damping coefficients.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Flexible photovoltaic support; 11. Load-bearing cable; 12. Vibration damping mechanism; 121. Damper; 1211. Piston rod; 122. Elastic element; 13. First connector; 14. Second connector; 15. Fixing element; 151. Fixing seat; 16. Dust cover; 17. Support structure; 17a. Bearing surface; 171. Crossbeam; 172. First column; 173. Second column; 174. Diagonal brace;

[0029] 20. Photovoltaic system; 21. Photovoltaic module; 22. Surface to be installed. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] See Figure 1 and Figure 2 In a first aspect, some embodiments of this application provide a flexible photovoltaic bracket 10 for supporting and fixing a photovoltaic module 21. The flexible photovoltaic bracket 10 includes a load-bearing cable 11 and a vibration damping mechanism 12. The load-bearing cable 11 is used to connect to the photovoltaic module 21. The load-bearing cable 11 is connected to at least one vibration damping mechanism 12. The vibration damping mechanism 12 includes a damper 121 and an elastic element 122. One end of the damper 121 is connected to the load-bearing cable 11, and the other end of the damper 121 is connected to the surface to be installed 22. One end of the elastic element 122 is connected to the load-bearing cable 11, and the other end of the elastic element 122 is connected to the surface to be installed 22.

[0037] The flexible photovoltaic support 10 provided in this embodiment is used to support and fix photovoltaic modules 21. The flexible photovoltaic support 10 includes a load-bearing cable 11 and a vibration damping mechanism 12. The load-bearing cable 11 is used to connect to the photovoltaic module 21. The vibration damping mechanism 12 includes a damper 121 and an elastic element 122. One end of the damper 121 is connected to the load-bearing cable 11, and the other end of the damper 121 is connected to the surface 22 to be installed. One end of the elastic element 122 is connected to the load-bearing cable 11, and the other end of the elastic element 122 is connected to the surface 22 to be installed. That is, the vibration damping mechanism 12 is connected to the load-bearing cable 11 through the damper 121. The damper 121 and the elastic element 122 work together to reduce vibration. When the load-bearing cable 11 is subjected to wind load and vibrates irregularly, the damping force of the damper 121 and the elastic force of the elastic element 122 can effectively consume the vibration energy of the load-bearing cable 11 and effectively suppress the vibration of the load-bearing cable 11, thereby reducing the probability of damage to the cells in the photovoltaic module 21. When the load-bearing cable is subjected to snow load and deforms, the damper 121 and the elastic element 122 can effectively suppress the deformation of the load-bearing cable 11, reduce the deformation of the photovoltaic module 21, enhance the protection of the photovoltaic module 21, and thus ensure the stable power generation of the photovoltaic module 21.

[0038] It should be noted that the installation surface 22 can be the ground or the installation surface on a fixed component. The fixed component may include a component fixed to the ground (such as a fixed pier) or a component installed on a building.

[0039] In one embodiment, see [reference] Figure 2 The damper 121 is provided with a first connector 13 at one end near the load-bearing cable 11, and the first connector 13 is sleeved on the load-bearing cable 11.

[0040] Thus, by setting a first connector 13 at one end of the damper 121 near the load-bearing cable 11 and sleeve the first connector 13 onto the load-bearing cable 11, the damper 121 and the load-bearing cable 11 can form a flexible and dynamically adjustable connection. This sleeve structure can efficiently capture and transmit vibration energy from all directions without restricting the slight displacement of the load-bearing cable 11 itself. When wind or snow loads cause multidimensional vibration of the load-bearing cable 11, the sleeve structure can ensure that the damper 121 responds instantly. Through the dissipation effect of the damper 121 and the restoring force of the elastic element 122, the energy is dissipated in synergy, which significantly improves the sensitivity and coverage of vibration reduction, effectively suppresses the vibration of the load-bearing cable 11, and reduces the probability of damage to the cells in the photovoltaic module 21. In addition, the sleeve structure can avoid stress concentration that may be caused by rigid connection, making the vibration reduction mechanism 12 more durable and reliable, and further ensuring the safety and power generation stability of the photovoltaic module 21 under complex working conditions.

[0041] Furthermore, the first connecting member 13 includes one of the following: a braided rope sleeve, a sliding ring, a clamp, a hinged clamp, and a U-bolt clamp.

[0042] In one embodiment, see [reference] Figure 2 The elastic element 122 is provided with a second connector 14 at one end near the load-bearing cable 11, and the second connector 14 is sleeved on the load-bearing cable 11.

[0043] Thus, when the load-bearing cable 11 sags due to wind load vibration or snow load, the sleeved second connector 14 can move synchronously with the cable body, ensuring that the elastic element 122 always provides continuous elastic support force in the most effective direction, suppressing deformation. Furthermore, the elastic element 122 can work in conjunction with the damper 121, with the damper 121 providing instantaneous damping energy dissipation and the elastic element 122 providing restoring stiffness to limit amplitude, together forming a complete and efficient vibration damping mechanism 12. This greatly improves the stability and adaptability of the flexible photovoltaic support 10 against complex loads, thereby providing more comprehensive protection for the photovoltaic module 21.

[0044] Furthermore, the second connecting member 14 includes one of the following: a braided rope sleeve, a sliding ring, a clamp, a hinged clamp, and a U-bolt clamp.

[0045] In one embodiment, see [reference] Figure 2 The vibration damping mechanism 12 also includes a fixing member 15, and the ends of the damper 121 and the elastic member 122 away from the load-bearing cable 11 are all connected to the fixing member 15; the fixing member 15 is fixed to the surface to be installed 22.

[0046] In this way, the fixing member 15 provides a unified and stable support point for the damper 121 and the elastic member 122, ensuring that the energy dissipation effect of the damper 121 and the restoring force of the elastic member 122 can work synergistically and efficiently on the load-bearing cable 11, avoiding inconsistencies in force lines or delayed response that may occur due to separate installation. In addition, it can greatly simplify the on-site installation process, improve the overall structure, and enable the vibration damping mechanism 12 to function as a complete module, significantly enhancing the stability of the load-bearing cable 11 against wind and snow loads, thereby providing more concentrated and reliable protection for the photovoltaic module 21.

[0047] In one embodiment, see [reference] Figure 2 The fastener 15 includes two fixed seats 151. The end of the damper 121 away from the load-bearing cable 11 is connected to one fixed seat 151, and the end of the elastic member 122 away from the load-bearing cable 11 is connected to the other fixed seat 151.

[0048] This enhances the flexibility and adaptability of the vibration damping mechanism 12 installation, allowing it to flexibly select the positions of the two fixed seats 151 according to the site terrain, installation conditions, or structural design requirements, thereby making it easier to achieve the optimal damping angle and force distribution. In addition, it can separate the force paths of the damper 121 and the elastic element 122, avoiding potential force flow interference between the two at the same fixed point. This ensures that the energy dissipation effect of damping and the recovery effect of elasticity can be clearly and independently transmitted to the installation foundation, making the vibration damping performance purer and more efficient.

[0049] In one embodiment, see [reference] Figure 1 The load-bearing cable 11 is connected to a vibration damping mechanism 12, which is located at the middle of the load-bearing cable 11 along its length.

[0050] When the load-bearing cable 11 vibrates under wind load, the amplitude of the vibration is usually greatest in the middle of the load-bearing cable 11. In this embodiment, by setting the vibration damping mechanism 12 in the middle of the load-bearing cable 11 along its length, the most significant vibration energy can be directly suppressed with the highest efficiency. This is equivalent to applying a control force at the antinode of the vibration waveform, which can most effectively consume vibration energy and limit the deformation amplitude with minimal damping and elasticity requirements. Thus, better protection for the photovoltaic module 21 is achieved with more economical investment, ensuring the stability and safety of the entire flexible photovoltaic support 10 under wind load.

[0051] In one embodiment, the load-bearing cable 11 is connected to a plurality of vibration damping mechanisms 12; the plurality of vibration damping mechanisms 12 are spaced apart along the length of the load-bearing cable 11.

[0052] In this way, multiple vibration damping mechanisms 12 can be used to control the entire length of the load-bearing cable 11 in segments and constrain it at multiple points, effectively suppressing complex vibration modes of different orders. When wind load or snow load is applied to different positions on the load-bearing cable 11, the nearest vibration damping mechanism 12 can respond immediately, quickly consume energy, and prevent local vibration from spreading to the entire cable length and forming large-amplitude oscillations. This not only greatly improves the coverage and response speed of vibration damping, but also forms a reliable redundancy backup. Even if a single mechanism fails occasionally, other vibration damping mechanisms 12 can still remain stable, thereby effectively suppressing the vibration and deformation of the long-span load-bearing cable 11, and thus providing comprehensive, balanced and powerful protection for long-span photovoltaic arrays.

[0053] In one embodiment, the damping force of the damper 121 is adjustable.

[0054] In practical applications, photovoltaic systems 20 face seasonal wind variations, diverse site conditions, and even long-term micro-variations in the support structure itself. Fixed damping parameters may not always be at the optimal operating point. In this embodiment, by making the damping force of damper 121 adjustable, engineers can precisely match and optimize the damping force based on on-site measured vibration data or specific environmental loads. This avoids insufficient damping leading to ineffective vibration reduction, and also prevents excessive damping from affecting the necessary flexible deformation capacity of the support. As a result, the entire vibration damping mechanism 12 can flexibly adapt to complex and changing working conditions, always maintaining a highly efficient vibration suppression state, and maximizing performance and reliability.

[0055] Furthermore, the damper 121 includes a magnetorheological damper 121.

[0056] Thus, by applying different operating currents to change the damping coefficient of the magnetorheological damper 121, the damping force of the damper 121 can be adjusted.

[0057] In one embodiment, see [reference] Figure 2 The damper 121 includes a piston rod 1211, and a dust cover 16 is fitted over the piston rod 1211.

[0058] This prevents dust and other impurities from entering the damper 121, extends the service life of the damper 121, and improves the safety and reliability of the vibration reduction mechanism 12.

[0059] In one embodiment, the elastic element 122 includes an elastic block. Specifically, the elastic element 122 may be a rubber block.

[0060] Thus, the elastic block provides a stable nonlinear restoring force, and its compact structure makes it easy to integrate into the support, saving space. Furthermore, the internal molecular friction of the elastic block itself possesses a certain hysteresis energy dissipation capability, which can synergistically enhance the effect with the damper 121, jointly suppressing vibration. In addition, it avoids corrosion and fatigue problems that may occur with metal springs, has better weather resistance and a longer lifespan, and requires less maintenance, enabling the entire vibration damping mechanism 12 to operate more reliably and for longer in harsh outdoor environments.

[0061] In one embodiment, see [reference] Figure 1 It also includes a support structure 17, which is fixed on the installation surface 22. The support structure 17 has a bearing surface 17a on the side away from the installation surface 22. The bearing surface 17a forms an angle with the installation surface 22. The load-bearing cable 11 is fixedly connected to the bearing surface 17a by an anchor.

[0062] Thus, by providing a bearing surface 17a on the side of the support structure 17 facing away from the installation surface 22, with the bearing surface 17a forming an angle with the installation surface 22 (i.e., the bearing surface 17a is inclined relative to the installation surface 22), the load-bearing cable 11 is fixedly connected to the bearing surface 17a via anchors. The load-bearing cable 11 is used to connect to the photovoltaic module 21, allowing the photovoltaic module 21 to be inclined and fixed at the optimal tilt angle, thereby maximizing the reception of solar radiation and directly improving power generation efficiency. Furthermore, the bearing surface 17a provides a clear and robust anchor point for the load-bearing cable 11. The anchor connection not only ensures the reliability of the tensioned structure but also allows for easy adjustment of the initial prestress of the load-bearing cable 11, ensuring it is always in optimal working condition. In addition, the load of the flexible load-bearing cable 11 can be effectively transferred and distributed to the support structure 17, enhancing the stability of the entire flexible photovoltaic support 10 and enabling it to better resist external loads such as wind and snow, ultimately maximizing energy capture while ensuring safety and longevity.

[0063] Further, see Figure 1 The support structure 17 includes a crossbeam 171, a first column 172, a second column 173, and a diagonal brace 174. The first column 172 and the second column 173 are spaced apart on the surface to be installed 22, and the height of the first column 172 is greater than the height of the second column 173. The crossbeam 171 overlaps the side of the first column 172 away from the surface to be installed 22 and the side of the second column 173 away from the surface to be installed 22. The diagonal brace 174 connects the first column 172 and the crossbeam 171.

[0064] Thus, the height difference between the first column 172 and the second column 173 naturally creates the required tilt angle for the bearing surface 17a, eliminating the need for complex angle adjustment components and simplifying the structure. The crossbeam 171, as the main load-bearing component, evenly distributes the load to the columns on both sides, enhancing the stability of the entire flexible photovoltaic support 10. The diagonal brace 174 connecting the higher first column 172 and the crossbeam 171 forms a stable triangular structure, greatly enhancing the overturning resistance and overall rigidity of the support structure 17 under lateral forces such as wind loads, ensuring the stability of the anchor points of the upper load-bearing cable 11, and providing a solid and reliable foundation for the entire flexible photovoltaic support 10.

[0065] In one embodiment, see [reference] Figure 1 The flexible photovoltaic support 10 includes at least two support structures 17 and at least two load-bearing cables 11; the at least two support structures 17 are arranged parallel to each other along the length direction of the load-bearing cables 11; the at least two load-bearing cables 11 are arranged parallel to each other and bridging the at least two support structures 17; at least one load-bearing cable 11 is connected to the vibration damping mechanism 12.

[0066] Thus, multiple parallel and spaced support structures 17 provide evenly distributed and robust support points for the photovoltaic module 21 array, ensuring overall stability over long spans. Multiple parallel load-bearing cables 11 share the load of the photovoltaic modules 21 above, forming a redundant force-bearing system. Even if a single cable malfunctions, the remaining cables can still provide support, significantly improving safety margins. By selectively connecting vibration damping mechanisms 12 to specific load-bearing cables 11, precise control of vibration in critical areas can be achieved while maintaining design flexibility, ultimately providing comprehensive and efficient protection for large-scale photovoltaic arrays in an economical and reasonable manner.

[0067] Secondly, see Figure 1 and Figure 2 Some embodiments of this application provide a photovoltaic system 20, including a photovoltaic module 21. The photovoltaic system 20 also includes the flexible photovoltaic support 10 in any of the above embodiments; the photovoltaic module 21 is connected to the load-bearing cable 11.

[0068] The photovoltaic system 20 provided in this application embodiment includes a flexible photovoltaic module 21 and a photovoltaic support 10. The flexible photovoltaic support 10 includes a load-bearing cable 11 and a vibration damping mechanism 12. The load-bearing cable 11 is connected to the photovoltaic module 21. The vibration damping mechanism 12 includes a damper 121 and an elastic element 122. One end of the damper 121 is connected to the load-bearing cable 11, and the other end of the damper 121 is connected to the surface to be installed 22. One end of the elastic element 122 is connected to the load-bearing cable 11, and the other end of the elastic element 122 is connected to the surface to be installed 22. Thus, when the load-bearing cable 11 is subjected to wind load... When irregular vibration occurs, the damping force of the damper 121 and the elastic force of the elastic element 122 can effectively consume the vibration energy of the load-bearing cable 11 and effectively suppress the vibration of the load-bearing cable 11, thereby reducing the probability of damage to the cells in the photovoltaic module 21. When the load-bearing cable deforms due to snow load, the damper 121 and the elastic element 122 can effectively suppress the deformation of the load-bearing cable 11, reduce the deformation of the photovoltaic module 21, enhance the protection of the photovoltaic module 21, thereby ensuring the stable power generation of the photovoltaic module 21, and thus ensuring the power generation of the photovoltaic system 20.

[0069] The working principle of the vibration damping mechanism 12 of this application is explained in detail below:

[0070] When the flexible photovoltaic support 10 is subjected to significant wind or snow loads, the load-bearing cable 11 will move upward or downward at a certain speed V. Taking the downward movement of the load-bearing cable 11 as an example, the force exerted by the wind and snow loads on the steel cable is constantly changing, resulting in different descent speeds for the load-bearing cable 11. Due to the damping and buffering effect of the damper 121 and elastic element 122 in the vibration damping mechanism 12, the descent speed of the load-bearing cable 11 will gradually decrease until it reaches zero at a certain point.

[0071] See Figure 3Assume the downward displacement of the load-bearing cable 11 is The mass of load-bearing cable 11 is Photovoltaic module 21 self-weight and wind and snow load Damping force of damper 121 And the elastic force of elastic element 122 According to Newton's second theorem, the following equations can be written:

[0072]

[0073] in, This indicates the rate at which the load-bearing cable 11 descends. This indicates the acceleration of the descending load-bearing cable 11.

[0074] Solving the second-order differential equation of the above equation, we get:

[0075]

[0076] in, , , , All of these represent coefficients to be determined.

[0077] Given the corresponding parameter values, the numerical solution of the differential equation is obtained through Matlab programming. Based on the numerical solution, the displacement versus time curves of the load-bearing cable 11 under different damping coefficients are obtained, as shown below. Figure 4 As shown, combined with Figure 4 It is known that as the damping coefficient increases, the vertical downward displacement of the steel cable gradually decreases. That is to say, by using the damper 121 and the elastic element 122 in combination, the displacement and deformation of the load-bearing cable 11 can be effectively suppressed, increasing the protection of the photovoltaic module 21 and ensuring the stable power generation of the photovoltaic module 21. Based on the vibration data measured on site or specific environmental loads, engineers are allowed to adjust the damping coefficient of the damper 121 to accurately match and optimize the damping force. This can avoid insufficient damping leading to ineffective vibration reduction, and also prevent excessive damping from affecting the necessary flexible deformation capacity of the support. This allows the entire vibration reduction mechanism 12 to flexibly adapt to complex and changing working conditions, always maintaining a highly efficient vibration suppression state, and maximizing performance and reliability.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A flexible photovoltaic support for supporting and fixing photovoltaic modules, characterized in that, The flexible photovoltaic support includes: A load-bearing cable is used to connect to the photovoltaic module; the load-bearing cable is connected to at least one vibration damping mechanism; The vibration damping mechanism includes a damper and an elastic element; one end of the damper is connected to the load-bearing cable, and the other end of the damper is connected to the surface to be installed; one end of the elastic element is connected to the load-bearing cable, and the other end of the elastic element is connected to the surface to be installed.

2. The flexible photovoltaic support according to claim 1, characterized in that, The damper is provided with a first connector at one end near the load-bearing cable, and the first connector is sleeved on the load-bearing cable.

3. The flexible photovoltaic support according to claim 1, characterized in that, A second connector is provided at one end of the elastic element near the load-bearing cable, and the second connector is sleeved on the load-bearing cable.

4. The flexible photovoltaic support according to claim 1, characterized in that, The vibration damping mechanism also includes a fixing member, and the ends of the damper and the elastic member away from the load-bearing cable are both connected to the fixing member; the fixing member is fixed to the surface to be installed.

5. The flexible photovoltaic support according to claim 4, characterized in that, The fastener includes two fixed seats. The end of the damper away from the load-bearing cable is connected to one of the fixed seats, and the end of the elastic element away from the load-bearing cable is connected to the other fixed seat.

6. The flexible photovoltaic support according to claim 1, characterized in that, The load-bearing cable is connected to one of the vibration damping mechanisms, which is located at the middle of the load-bearing cable along its length. Alternatively, the load-bearing cable is connected to multiple vibration damping mechanisms; the multiple vibration damping mechanisms are spaced apart along the length of the load-bearing cable.

7. The flexible photovoltaic support according to claim 1, characterized in that, The damping force of the damper is adjustable; And / or, the damper includes a piston rod, the piston rod being covered with a dust cover; And / or, the damper includes a magnetorheological damper; And / or, the elastic element includes an elastic block.

8. The flexible photovoltaic support according to claim 1, characterized in that, It also includes a support structure, which is fixed to the surface to be installed; the support structure has a bearing surface on the side away from the surface to be installed, the bearing surface is at an angle to the surface to be installed, and the load-bearing cable is fixedly connected to the bearing surface by an anchor.

9. The flexible photovoltaic support according to claim 8, characterized in that, The flexible photovoltaic support includes at least two support structures and at least two load-bearing cables; the at least two support structures are arranged parallel to each other and spaced apart along the length direction of the load-bearing cables; the at least two load-bearing cables are arranged parallel to each other and spaced apart and bridging the at least two support structures; At least one of the load-bearing cables is connected to the vibration damping mechanism.

10. A photovoltaic system, comprising photovoltaic modules, characterized in that, The photovoltaic system further includes a flexible photovoltaic support as described in any one of claims 1 to 9; the photovoltaic module is connected to the load-bearing cable.

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