Flexible photovoltaic system with air pillow structure

Abstract

The invention relates to the technical field of photovoltaic supports, in particular to a flexible photovoltaic system with an air pillow structure. The flexible photovoltaic system comprises at least four stand columns, two parallel inhaul cables, a plurality of air pillow structure units and a plurality of flexible photovoltaic assemblies, the air pillow structure units are sequentially arranged on the two inhaul cables in the length direction of the inhaul cables, and the flexible photovoltaic assemblies are arranged on the upper surfaces of the air pillow structure units. According to the air pillow structure units and the connecting structures of the air pillow structure units and the inhaul cables, the lift coefficient of the air pillow structure units is zero, namely zero lift, the main influence caused by wind vibration is eliminated from the mechanical source, and the stability and safety of the flexible support under the wind load are greatly improved. Meanwhile, the air pillow units are adopted to directly replace traditional rigid transverse supports such as purlines, the dead weight of the system is greatly reduced structurally, the structural reliability of the inhaul cable and the whole support system is improved, and the service life of the inhaul cable and the whole support system is prolonged.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic support technology, and in particular to a flexible photovoltaic system with an air cushion structure. Background Technology

[0002] With the large-scale application of photovoltaic energy, long-span flexible photovoltaic (PV) supports have attracted widespread attention due to their ability to adapt to complex terrain. Their core structure typically consists of two parallel cables, supported by columns and prestressed, with flexible PV modules suspended or laid on these cables. However, to achieve long-span coverage, these supports require relatively long cables. Long cables are highly susceptible to wind vibration under wind loads, which not only leads to instability in the flexible PV modules and reduced power generation efficiency but also exacerbates fatigue wear on the cables and connectors, affecting system safety.

[0003] Existing technologies mainly employ two solutions to mitigate the wind-induced vibration problem of long cables: one is to increase the number of columns to shorten the length of a single cable segment, thereby improving stability by reducing the cable span. However, this solution significantly increases the construction cost of the columns and pile foundations and has limited applicability in complex terrain. The other solution is to add purlins between two cables to provide lateral support and suppress vibration. However, the addition of purlins significantly increases the system's self-weight, which not only significantly increases the load-bearing pressure on the cables and reduces their structural reliability, but also accelerates cable fatigue due to the additional load, further shortening the overall service life of the support system. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a flexible photovoltaic system with an air cushion structure, which solves the technical problem of low power generation efficiency caused by wind vibration.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] This invention provides a flexible photovoltaic system with an air cushion structure, comprising at least four columns, two parallel cables, multiple air cushion structural units, and multiple flexible photovoltaic modules. The columns are vertically positioned on the ground, and the two ends of the cables are connected to the corresponding columns, with prestress applied to the cables. The multiple air cushion structural units are sequentially mounted on the two cables along their length, and the multiple flexible photovoltaic modules are disposed on the upper surface of the air cushion structural units. The air cushion structural units and their connection to the cables are configured such that the lift coefficient of the air cushion structural units is zero.

[0009] Preferably, it also includes mounting components that correspond one-to-one with both sides of each air cushion structural unit along its length; the air cushion structural units are connected to two cables respectively through two sets of mounting components.

[0010] Preferably, the connection between the mounting components and the cables ensures that the upper and lower symmetrical centers of the air cushion structural unit are horizontal; the cross-sectional shape of the air cushion structural unit is symmetrical both vertically and horizontally.

[0011] Preferably, the upper surface of the air cushion structure unit is flat and is horizontal or tilted to one side; the flexible photovoltaic module is attached to the upper surface of the air cushion structure unit.

[0012] Preferably, the connection between the mounting component and the cable causes the upper surface of the air cushion structural unit to tilt to one side; the lower surface of the air cushion structural unit protrudes outward, and the lift coefficient of the air cushion structural unit is zero.

[0013] Preferably, the installation component includes an installation part and a connecting rope; the installation part is located on one side of the air cushion structure unit along its length and has a channel formed inside for the connecting rope to pass through; the connecting rope passes through the channel and its two ends extend out of the channel and are detachably connected to the cable through the connecting component.

[0014] Preferably, the connecting assembly includes a connecting body, a positioning unit, a first locking unit, and a second locking unit; the positioning unit is disposed on one side of the connecting body, and one end of the connecting rope passes through the positioning unit and is locked by the first locking unit; a guide groove is recessed on the other side of the connecting body, and the cable matches the guide groove and is connected to the connecting body by the second locking unit.

[0015] Preferably, the positioning unit includes a positioning frame and a positioning post. The positioning frame has an opening on one side, and the positioning post is located inside the opening of the positioning frame. The connecting rope is bent after passing around the positioning post and then locked by the first locking unit. The second locking unit includes two screws and an abutment. The two screws are located on the connecting body and are respectively located on both sides of the guide groove. The abutment is sleeved on the screws to press the cable and is locked by a nut.

[0016] Preferably, it further includes guide components corresponding to the columns; the guide components include guide seats and fixing members; the guide seats are disposed on the columns, and the guide seats have a first through groove and a second through groove that are perpendicular to each other and intersect each other; the first through groove is consistent with the extension direction of the cable; the first through groove matches the cable, and the fixing members are disposed on the columns to lock the cable to the first through groove.

[0017] Preferably, the air cushion structural unit includes at least an inner layer for maintaining airtightness and an outer layer for providing structural strength.

[0018] (III) Beneficial Effects

[0019] The beneficial effects of this invention are:

[0020] This invention discloses a flexible photovoltaic system with an air cushion structure, comprising at least four columns, two parallel cables, multiple air cushion structural units, and multiple flexible photovoltaic modules. The columns are vertically positioned on the ground, and the two ends of the cables are connected to the corresponding columns on either side, with prestress applied to the cables. The multiple air cushion structural units are sequentially arranged on the two cables along their length. The multiple flexible photovoltaic modules are disposed on the upper surface of the air cushion structural units. The air cushion structural units and their connection to the cables are designed to ensure that the lift coefficient of the air cushion structural units is zero, i.e., zero lift, thus eliminating the main influence of wind vibration at its mechanical source and greatly improving the stability and safety of the flexible support under wind loads. Simultaneously, by directly replacing traditional rigid lateral supports such as purlins with air cushion structural units, the system's self-weight is significantly reduced structurally, thereby significantly reducing the long-term load and fatigue stress of the cables, and further improving the structural reliability and service life of the cables and the entire support system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the flexible photovoltaic system with an air cushion structure according to the present invention;

[0022] Figure 2 for Figure 1 A partial schematic diagram;

[0023] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle;

[0024] Figure 4 for Figure 2 Enlarged schematic diagram of part B in the middle;

[0025] Figure 5 This is a structural diagram of the connecting components;

[0026] Figure 6 This is the left view of the first embodiment;

[0027] Figure 7 This is the left view of the second embodiment;

[0028] Figure 8 This is the left view of the third embodiment.

[0029] [Explanation of Labels in the Attached Image]

[0030] 1: Column;

[0031] 2: Cable;

[0032] 3: Air cushion structural unit;

[0033] 4: Flexible photovoltaic modules;

[0034] 5: Connecting component; 51: Connecting body; 511: Guide groove; 52: Positioning unit; 521: Positioning frame; 522: Positioning post; 53: First locking unit; 54: Second locking unit; 541: Screw; 542: Abutment part; 543: Nut;

[0035] 6: Guide assembly; 61: Guide seat; 611: First through slot; 612: Second through slot; 62: Fixing element;

[0036] 7: Installation component; 71: Installation part; 72: Connecting rope. Detailed Implementation

[0037] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] like Figure 1 As shown, this embodiment of the invention provides a flexible photovoltaic system with an air cushion structure. The air cushion structure unit 3, which has a specific aerodynamic shape and is internally inflated, is used as the supporting base for the photovoltaic module. At the same time, the connection structure between the air cushion structure unit 3 and the cable 2 is designed to make the lift coefficient of the air cushion structure unit 3 zero to suppress wind vibration, thereby solving the problems of frequent wind vibration, excessive weight, and poor adaptability of traditional large-span flexible photovoltaic supports.

[0039] The flexible photovoltaic system with an air cushion structure includes at least four columns 1, which are vertically fixed to the foundation, serving as the supporting base for the entire system. Two parallel cables 2 (typically high-strength steel strands) are connected and tensioned to the top of the columns 1 via subsequent guide components 6 (described in detail later). Pre-stress is applied to the cables 2 to ensure they remain taut, providing stable support for the air cushion structural units 3 above them. Multiple air cushion structural units 3 are arranged sequentially along the length of the cables 2. Flexible photovoltaic modules 4 are laid on the upper surface of each air cushion structural unit 3. These multiple units together form a continuous or spaced photovoltaic power generation strip, adapting to large-span installation requirements and significantly reducing the number of columns 1 and pile foundations, thus lowering construction costs and simplifying adaptation to complex terrain.

[0040] In this embodiment, the air cushion structural unit 3 is filled with dry air or an inert gas (such as nitrogen) to maintain a certain internal pressure (e.g., 300-800 Pa, which ensures the flatness of the upper surface while preventing membrane fatigue due to excessive pressure). The internal pressure of the air cushion structural unit 3 plays two main roles: first, it resists the tension of the membrane material itself and external loads (mainly the weight of the photovoltaic module), ensuring that the upper surface maintains the required flatness and orientation, providing a stable and flat mounting surface for the photovoltaic module, and avoiding power generation efficiency loss due to uneven mounting surface; second, it forms a "rigid" shell with a defined three-dimensional geometry together with the membrane material, combining lightweight and structural stability, eliminating the need for additional tension or support structures, and simplifying the system structure.

[0041] The connection between the air cushion structural unit 3 and the cable 2 is designed to make the lift coefficient of the air cushion structural unit 3 zero, i.e., zero lift. This eliminates the main influence of wind vibration at its mechanical source, greatly improving the stability and safety of the flexible support under wind loads. It effectively avoids problems such as photovoltaic module attitude deviation and power generation efficiency fluctuations caused by wind vibration in traditional supports, as well as fatigue damage to the cable 2 and connectors. Simultaneously, by directly replacing traditional rigid lateral supports such as purlins with air cushion structural units, the system's self-weight is significantly reduced structurally, thereby significantly reducing the long-term load and fatigue stress of the cable 2, and thus improving the structural reliability and service life of the cable 2 and the entire support system. It should be noted that by changing the cross-sectional shape of the air cushion structural unit 3 and the connection between the air cushion structural unit 3 and the cable 2 to achieve the desired spatial orientation of the air cushion structural unit 3, the aerodynamic lift coefficient of this cross-section can approach zero under wind action.

[0042] It should be noted that "zero lift coefficient" or "zero lift" here is an engineering concept, meaning that under this working condition, the net aerodynamic force generated by the cross-section perpendicular to the incoming flow direction is optimized to an extremely low level, which can be regarded as effectively eliminating lift excitation in practical engineering. Theoretically, an absolute zero value is difficult to achieve and is not necessary. As long as the lift is significantly suppressed to a level that is insufficient to cause significant wind vibration, it is considered to meet the requirements of this invention. In this invention, the air cushion structure unit 3 is a structure with a uniform cross-section along the extension direction of the cable, and the cross-section is a symmetrical shape centered on the horizontal plane to achieve the zero lift state (Examples 1 and 2), or the cross-section has a specific cross-sectional shape with the upper side having the required tilt angle and the lower side being an outwardly convex arc shape that is symmetrical from left to right to achieve the zero lift state (Example 3).

[0043] Example 1

[0044] like Figure 6As shown, the flexible photovoltaic system with air cushion structure also includes mounting components 7 that correspond one-to-one with both sides of each air cushion structure unit 3 along its length. The air cushion structure unit 3 is connected to two cables 2 through two sets of mounting components 7.

[0045] In this embodiment, the connection between the mounting component 7 and the cable 2 makes the air cushion structure unit 3 symmetrical about the horizontal plane. The air cushion structure unit 3 achieves zero lift by having a flat and horizontal upper surface through its symmetrical cross-sectional structure. This solution has a simple structure, low processing difficulty, is suitable for mass production, and has stable aerodynamic characteristics, making it suitable for most conventional wind speed environments.

[0046] like Figure 2 As shown, the air cushion structural unit 3 is a sealed, flexible bladder whose wall is made of a composite membrane material, comprising at least an inner layer (such as ETFE film or PVC-coated fabric) for maintaining airtightness and an outer layer (such as polyester fiber fabric or fiberglass fabric) for providing structural strength. The inner layer ensures no gas leakage and maintains internal pressure, while the outer layer has high tensile strength to withstand the tension generated by internal air pressure and external loads. This composite layer structure provides excellent durability and mechanical properties while ensuring lightweight construction.

[0047] Because the air cushion structural unit 3 is symmetrical about the horizontal plane, the airflow direction is parallel to the axis of symmetry of the air cushion cross-section when the wind blows. For a vertically symmetrical cross-section, the lift coefficient is zero when its axis of symmetry is parallel to the airflow direction. Therefore, in this working state, the net lift acting on the air cushion cross-section is theoretically zero. The flexible photovoltaic module 4 is integrally bonded to the upper surface of the air cushion structural unit 3 through a highly weather-resistant structural adhesive layer (such as silicone sealant, polyurethane sealant, etc.), and its weight is supported by the internal air pressure of the air cushion. Since the flexible photovoltaic module 4 itself is very lightweight, its added weight has little impact on the air pressure required for the air cushion to balance its shape, and will not disrupt its preset symmetrical shape. Therefore, it has minimal impact on achieving the zero-lift aerodynamic state.

[0048] like Figure 3As shown, the mounting component 7 is used to connect the air cushion structural unit 3 and the cable 2, ensuring that the air cushion structural unit 3 is subjected to balanced forces, is stably installed, and that the symmetrical plane of the air cushion structural unit is horizontal. The mounting component 7 includes a mounting part 71 and a connecting rope 72. The mounting part 71 is sewn or integrally formed on one side along the length of the air cushion structural unit 3 and forms a channel inside. The connecting rope 72 (such as high-strength polyester rope, stainless steel rope, etc.) passes through it, and its two ends are led out and connected to the connecting component 5. The built-in channel in the mounting part 71 allows the connecting rope 72 to pass through, which limits and protects the connecting rope 72, preventing lateral displacement or wear when the connecting rope 72 is under tension, thus improving the reliability of the connection. At the same time, a wear-resistant coating (such as polytetrafluoroethylene coating) can be applied to the inner wall of the channel to further reduce the wear rate of the connecting rope 72 and extend its service life. The connecting rope 72 is detachably connected to the cable 2 via the connecting component 5, which facilitates the installation, positioning, and subsequent disassembly and maintenance of the air cushion structure unit 3. At the same time, the position of the air cushion structure unit 3 can be finely adjusted to ensure that multiple air cushion structure units 3 are neatly arranged and the upper surface forms a continuous mounting surface, improving the overall aesthetics and component installation accuracy.

[0049] Example 2

[0050] like Figure 7 As shown, to ensure the flexible photovoltaic module 4 receives optimal sunlight while meeting the zero-lift condition under wind conditions, the difference between this embodiment and Embodiment 1 is that the upper surface of the air cushion structure unit 3 is tilted to one side. This upper surface of the air cushion structure unit 3 becomes a flat, tilted surface at an angle to the horizontal plane. This angle is the installation tilt angle of the photovoltaic module, and the flexible photovoltaic module 4 is attached to the upper surface of the air cushion structure unit 3. This tilting design allows the photovoltaic module to receive solar radiation to the maximum extent without disrupting the vertical symmetry of the cross-section.

[0051] Example 3

[0052] like Figure 8 As shown, this embodiment directly meets the zero lift requirement under wind action by using an asymmetrical cross-sectional shape. This solution is suitable for wind speed and installation tilt angle in specific sites and is adaptable to scenarios with complex wind environments or special lighting requirements.

[0053] In this embodiment, the cross-section of the air cushion structural unit 3 is not symmetrical. The connection between the mounting component 7 and the cable 2 allows the upper surface of the air cushion structural unit 3 to form the required tilt angle, while the lower surface is designed as an outwardly convex arc surface. The specific curve of this arc surface can be determined by computational fluid dynamics simulation combined with wind tunnel test optimization. The specific steps are as follows: First, establish a three-dimensional model of the air cushion structural unit 3, and set the tilt angle of the upper surface as variable α and the radius of curvature of the lower surface as variable β; Second, import fluid dynamics analysis software such as ANSYS Fluent to simulate the maximum wind speed (usually 15-25 m / s) in the installation area once every 50 years, and calculate the lift coefficient under different combinations of α and β; Third, screen for lift coefficients with an absolute value ≤ 0.01, conduct wind tunnel test verification, and finally determine the optimal cross-sectional shape parameters.

[0054] This asymmetric optimization design offers greater flexibility, allowing for design tailored to the installation tilt angle of a specific site. The bladder structure of its air cushion unit 3 and the connection method of the mounting components 7 are similar to those in Embodiment 1. Similarly, the weight of the flexible photovoltaic module 4 has a controllable impact on the optimized air cushion shape and internal pressure, without overturning its basic aerodynamic shape designed to achieve zero lift.

[0055] like Figures 3-5 As shown, to ensure reliable implementation of the system, the flexible photovoltaic system with air cushion structure of the present invention also includes a connecting component 5 and a guiding component 6. The two work together to ensure the firmness of the connection between the air cushion structure unit 3 and the cable 2, and between the cable 2 and the column 1.

[0056] like Figure 3 and Figure 5As shown, the connecting component 5 is a key component for connecting the air cushion unit and the cable 2. The connecting component 5 includes a connecting body 51, a positioning unit 52, a first locking unit 53, and a second locking unit 54. The connecting body 51 is made of high-strength aluminum alloy or stainless steel to ensure it can withstand the weight of the air cushion structural unit 3 and the photovoltaic module, as well as wind loads. The positioning unit 52 is located on one side of the connecting body 51. One end of the connecting rope 72 passes through the positioning unit 52 and is locked by the first locking unit 53 (such as a U-shaped rope clamp), achieving a secure lock and directional force on the connecting rope 72, preventing it from loosening or slipping, and ensuring the installation stability of the air cushion structural unit 3. A guide groove 511 is recessed on the other side of the connecting body 51. The guide groove 511 has a semi-circular cross-sectional shape. The cable 2 matches the guide groove 511 and is connected to the connecting body 51 by the second locking unit 54. The guide groove 511 of the connecting body 51 matches the shape of the cable 2, achieving accurate positioning of the cable 2 and the connecting component 5 and preventing the connecting component 5 from sliding along the cable 2. Simultaneously, an anti-slip rubber pad can be provided on the inner wall of the guide groove 511 to increase friction with the cable 2, further improving connection stability and preventing wear on the surface of the cable 2 due to rigid contact. The second locking unit 54 independently locks the cable 2, without interfering with the locking structure of the connecting rope 72, facilitating separate tension adjustments to adapt to different installation conditions, and providing a reliable locking method that is not easily loosened under wind loads.

[0057] like Figure 5 As shown, the positioning unit 52 includes a positioning frame 521 and a positioning post 522. The positioning frame 521 has an opening on one side, and the positioning post 522 is positioned within the opening of the positioning frame 521. The connecting rope 72 is bent after passing around the positioning post 522 and then locked by the first locking unit 53. The second locking unit 54 includes two screws 541 and an abutment 542. The two screws 541 are mounted on the connecting body 51 and are respectively positioned on both sides of the guide groove 511. The abutment 542 is sleeved on the screws 541 to press the cable 2 and is locked by the nut 543. During installation, the cable 2 is inserted into the guide groove 511, and then the abutment 542, like a pressure block, is sleeved onto the screws 541 on both sides. The nut 543 is tightened, causing the abutment 542 to press the cable 2. The tightening force is adjustable and evenly distributed, adaptable to cables 2 of different diameters, and highly versatile.

[0058] like Figure 4As shown, the guide assembly 6 corresponds one-to-one with the column 1 to ensure that the cable 2 maintains its straightness after tensioning and avoids deviation. The guide assembly 6 includes a guide seat 61 and a fixing member 62. The guide seat 61 is set on the column 1 and has a first through groove 611 and a second through groove 612 that are perpendicular to each other and intersect. The first through groove 611 is consistent with the extension direction of the cable 2, providing guidance for the cable 2 and ensuring that the cable 2 maintains its straightness after tensioning, avoiding deviation that would cause uneven stress on the air cushion structure unit 3. The first through groove 611 matches the cable 2, and the fixing member 62 is set on the column 1 to lock the cable 2 to the first through groove 611, realizing the firm positioning of the cable 2 and preventing the cable 2 from shifting or loosening under wind load or long-term use, thus ensuring the stability of the prestress. The structure of the fastener 62 is similar to that of the second locking unit 54, including two screws and an abutment plate. The two screws are located on both sides of the second through slot 612, and the abutment plate is sleeved on the screws to press the cable 2 and is locked by a nut. When the abutment plate presses the cable 2 by tightening the nut, the cable 2 will undergo slight deformation under stress. The second through slot 612 provides space for this deformation, which can effectively prevent the cable 2 from local stress concentration due to excessive restraint. This prevents the cable 2 from fatigue damage caused by stress concentration under long-term stress or wind load, and further improves the service life of the cable 2.

[0059] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A flexible photovoltaic system with an air cushion structure, characterized in that, It includes at least four columns (1), two parallel cables (2), multiple air cushion structural units (3) and multiple flexible photovoltaic modules (4). The column (1) is vertically set on the ground, and the two ends of the cable (2) are respectively connected to the column (1) on the corresponding side, and the cable (2) is prestressed. Multiple air cushion structural units (3) are arranged sequentially along the length direction of the cable (2) on the two cables (2), and multiple flexible photovoltaic modules (4) are disposed on the upper surface of the air cushion structural units (3); The air cushion structure unit (3) and the connection between the air cushion structure unit (3) and the cable (2) are constructed such that the lift coefficient of the air cushion structure unit (3) is zero.

2. The flexible photovoltaic system with an air cushion structure as described in claim 1, characterized in that: It also includes mounting components (7) that correspond one-to-one with both sides of each of the air cushion structural units (3) along the length direction; The air cushion structure unit (3) is connected to the two cables (2) through two sets of the mounting components (7).

3. The flexible photovoltaic system with an air cushion structure as described in claim 2, characterized in that: The connection between the installation component (7) and the cable (2) makes the upper and lower symmetrical centers of the air cushion structure unit (3) horizontal; The cross-sectional shape of the air cushion structural unit (3) is symmetrical from top to bottom.

4. The flexible photovoltaic system with an air cushion structure as described in claim 3, characterized in that: The upper surface of the air cushion structure unit (3) is a plane and is horizontal or inclined to one side; The flexible photovoltaic module (4) is attached to the upper surface of the air cushion structure unit (3).

5. The flexible photovoltaic system with an air cushion structure as described in claim 2, characterized in that: The connection between the mounting component (7) and the cable (2) causes the upper surface of the air cushion structure unit (3) to tilt to one side; The lower surface of the air cushion structure unit (3) protrudes outward, and the lift coefficient of the air cushion structure unit (3) is zero.

6. The flexible photovoltaic system with an air cushion structure as described in any one of claims 2-5, characterized in that: The installation assembly (7) includes an installation part (71) and a connecting rope (72); The mounting part (71) is located on one side of the length direction of the air cushion structure unit (3) and has a channel inside for the connecting rope (72) to pass through. The connecting rope (72) passes through the channel and extends out of the channel at both ends, and is detachably connected to the cable (2) via the connecting assembly (5).

7. The flexible photovoltaic system with an air cushion structure as described in claim 6, characterized in that: The connecting component (5) includes a connecting body (51), a positioning unit (52), a first locking unit (53), and a second locking unit (54); The positioning unit (52) is located on one side of the connecting body (51), and one end of the connecting rope (72) passes through the positioning unit (52) and is locked by the first locking unit (53). The other side of the connecting body (51) is recessed with a guide groove (511), and the cable (2) matches the guide groove (511) and is connected to the connecting body (51) by the second locking unit (54).

8. The flexible photovoltaic system with an air cushion structure as described in claim 7, characterized in that: The positioning unit (52) includes a positioning frame (521) and a positioning post (522). The positioning frame (521) has an opening on one side, and the positioning post (522) is disposed in the opening of the positioning frame (521). The connecting rope (72) is bent after passing around the positioning post (522) and then locked by the first locking unit (53); The second locking unit (54) includes two screws (541) and an abutment (542); Two screws (541) are disposed on the connecting body (51) and respectively disposed on both sides of the guide groove (511). The abutment (542) is sleeved on the screw (541) to press the cable (2) and is locked by the nut (543).

9. The flexible photovoltaic system with an air cushion structure as described in claim 1, characterized in that: It also includes guide components (6) that correspond one-to-one with the column (1); The guide assembly (6) includes a guide seat (61) and a fastener (62); The guide seat (61) is disposed on the column (1), and the guide seat (61) has a first through groove (611) and a second through groove (612) that are perpendicular to each other and intersect each other. The first through groove (611) extends in the same direction as the cable (2); The first through groove (611) matches the cable (2), and the fastener (62) is provided on the column (1) to lock the cable (2) to the first through groove (611).

10. The flexible photovoltaic system with an air cushion structure as described in claim 2, characterized in that: The air cushion structural unit (3) includes at least an inner layer for maintaining airtightness and an outer layer for providing structural strength.

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