High-stability floating type flexible photovoltaic structure

Abstract

The invention discloses a high-stability floating type flexible photovoltaic structure, and belongs to the technical field of photovoltaic module water surface installation equipment, the high-stability floating type flexible photovoltaic structure comprises a fixed pile foundation, a wave dissipation plate, a flexible photovoltaic module and an anchoring system, the wave dissipation plate is arranged on the fixed pile foundation, and the fixed pile foundation plays a supporting role and is tightly connected with the flexible photovoltaic module; and the stability of the whole structure is ensured. The flexible photovoltaic module is connected with the anchoring system; the technical problems that in the prior art, flexible photovoltaic rigidity is small, and structural damage is easily caused by too large motion response under the action of sea waves are solved, and the stability and the floating performance of the structure are enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic component water surface installation equipment and relates to a high-stability floating flexible photovoltaic structure. Background Art

[0002] As the global demand for renewable energy continues to grow, photovoltaic technology, as an important component of clean energy, is experiencing unprecedented innovation and development. Among them, floating photovoltaic, as an emerging form of photovoltaic power generation, has received extensive attention and research in recent years due to its unique layout and potential high power generation efficiency.

[0003] Floating photovoltaic technology, as the name implies, is to install photovoltaic panels on platforms or structures floating on the water. This technology was initially mainly used in inland waters such as freshwater lakes and reservoirs, and later gradually expanded to marine environments. Compared with traditional ground-based photovoltaic power stations, floating photovoltaics have many advantages. First, it can effectively utilize the water surface space, especially those vast waters that were originally difficult to use for other economic activities, thereby greatly increasing the installed capacity of photovoltaic power stations without occupying precious land resources. Secondly, due to the cooling effect of water on photovoltaic panels, floating photovoltaic systems often show higher power generation efficiency, especially in hot seasons, this advantage is particularly obvious.

[0004] However, with the in-depth development of technology, especially in the exploration of offshore flexible photovoltaics, a series of new challenges have also emerged. Offshore flexible photovoltaic technology refers to laying flexible photovoltaic modules directly on the sea surface, in direct contact with seawater, thereby further reducing installation costs and potentially improving power generation efficiency. The core of this technology lies in the lightweight and bendable characteristics of flexible photovoltaic modules, which enable them to adapt to the complex and changing marine environment.

[0005] Nevertheless, offshore flexible photovoltaic technology also faces problems that cannot be ignored. Since flexible photovoltaic modules have relatively low rigidity, they are prone to produce large motion responses under the action of waves. This movement not only affects the power generation efficiency of photovoltaic modules, but may also cause structural damage due to long-term and repeated mechanical stress, thereby affecting the stability and service life of the entire photovoltaic system. Especially under extreme weather conditions, such as strong winds and huge waves, the risk of damage to flexible photovoltaic modules is significantly increased.

[0006] Therefore, how to improve the wind and wave resistance and reduce motion response of flexible photovoltaic modules while maintaining their efficient power generation has become a key issue that needs to be urgently addressed in the current development of floating photovoltaic technology. Summary of the invention

[0007] The purpose of the present invention is to solve the technical problem in the prior art that flexible photovoltaics have low stiffness and are easily damaged due to excessive motion response under the action of waves, and to provide a highly stable floating flexible photovoltaic structure.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention discloses a high-stability floating flexible photovoltaic structure, comprising a fixed pile foundation, a wave-breaking board, a flexible photovoltaic module and an anchoring system; The wave-breaking plate is arranged on a fixed pile foundation, and the fixed pile foundation is connected to a flexible photovoltaic component; and the flexible photovoltaic component is connected to an anchoring system.

[0009] Furthermore, connecting blocks are provided between the flexible photovoltaic modules.

[0010] Furthermore, the flexible photovoltaic assembly is connected to the connection block via a hinge.

[0011] Furthermore, the connection block is connected to an anchoring system.

[0012] Furthermore, the flexible photovoltaic module is connected to the fixed pile foundation via a photovoltaic module connecting ring.

[0013] Furthermore, an operation and maintenance channel is provided between the fixed pile foundations of every two wave-breaking plates.

[0014] Furthermore, the wave-breaking board is arranged in a wave-breaking board supporting structure and is fixed on a fixed pile foundation through a wave-breaking board supporting fixture.

[0015] Furthermore, the wave-breaking board supporting fixture comprises a supporting block, a pad, a fixing member, a pile ring, a tightener and a connecting rod; The wave-breaking board supporting structure is supported by a supporting block and fixed by a pad and a fixing member; the supporting block is fixedly connected to a pile ring by a connecting rod, and the pile ring is fixed to a fixed pile foundation by a tightener.

[0016] Further, the flexible photovoltaic assembly includes a photovoltaic cell sheet and a watertight cavity; The photovoltaic cell sheet is arranged inside the watertight cavity; a watertight gel coat is arranged at the bottom of the watertight cavity; and a sealing glue cover is arranged at the top of the watertight cavity.

[0017] Furthermore, a sealing opening is provided at the top of the watertight cavity.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses a highly stable floating flexible photovoltaic structure. By setting a fixed pile foundation, the structure can provide a solid support foundation in a water environment, effectively resist the impact of natural forces such as water flow, wind and waves, and ensure the long-term stable operation of the entire photovoltaic system. The setting of the wave-breaking plate further reduces the direct effect of waves on the structure, reduces the vibration and displacement of the structure caused by wave scouring, and thus improves the stability of the overall structure; the use of flexible photovoltaic modules not only reduces the weight of the structure and enhances the flexibility of the system, but also enables the photovoltaic panels to fit the water surface more closely, maximize the use of solar radiation, and improve the photoelectric conversion efficiency; the close connection between the anchoring system and the flexible photovoltaic modules ensures the stable positioning of the photovoltaic structure in the water area. This design not only enhances the anti-drifting ability of the structure, but also facilitates the subsequent maintenance and management, reducing the safety hazards and operation and maintenance costs caused by structural displacement.

[0019] Furthermore, by setting connecting blocks between flexible photovoltaic modules, the connection strength between modules and the stability of the overall structure are effectively enhanced. This design enables photovoltaic modules to form a more compact and coordinated whole when facing external forces such as wind, waves, and water flow, reducing the impact of the shaking or displacement of individual modules on the stability of the entire system; the use of hinges to connect the flexible photovoltaic modules and the connecting blocks not only maintains the flexibility of the photovoltaic modules, but also allows a certain amount of activity space between the modules to better adapt to the slight fluctuations of the water surface; connecting the connecting blocks with the anchoring system further strengthens the fixing effect of the photovoltaic structure in the water area, not only enhancing the anti-drifting ability of the photovoltaic modules, but also enabling the anchoring system to more evenly disperse and withstand various external forces from the water surface, improving the stability and safety of the entire structure.

[0020] Furthermore, by setting the wave-breaking board in the wave-breaking board supporting structure and using the wave-breaking board supporting fixture for precise fixation, the stability and wave-breaking efficiency of the wave-breaking board are effectively improved. This design enables the wave-breaking board to better resist the impact of wind and waves, reduce the direct impact of waves on the photovoltaic structure, and thus enhance the stability and safety of the entire photovoltaic system; the design of the wave-breaking board supporting fixture uses a variety of components such as supporting blocks, pads, fixing pins, pile rings, tighteners and connecting rods to achieve a stable connection between the wave-breaking board and the fixed pile foundation. This design not only improves the reliability and stability of the fixation, but also makes the installation process more convenient and efficient, reducing installation costs and time.

[0021] Furthermore, the photovoltaic cells are arranged inside the watertight cavity, which fundamentally isolates the direct contact between moisture and the cells, greatly improving the waterproof performance of the photovoltaic module; the watertight gel coat used at the bottom of the watertight cavity, and the sealant cover and sealing port configured on the top, together construct a strict waterproof barrier, which can ensure the dryness of the photovoltaic module even in harsh marine environments, and prevent performance degradation or damage caused by moisture intrusion; because the photovoltaic cells are effectively protected by the watertight cavity, the direct impact of environmental factors such as seawater corrosion and salt spray erosion on the cells is avoided, thereby significantly extending the service life of the photovoltaic module; the design of the sealing structure also reduces the loosening or damage of the structure caused by external forces such as thermal expansion and contraction and wave impact, further enhancing the durability and reliability of the photovoltaic module; the setting of the sealant cover and the sealing port provides a convenient maintenance channel for operation and maintenance personnel. When necessary, the photovoltaic cells can be inspected, cleaned or replaced through the sealing port, reducing the difficulty and cost of operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a front view of the high-stability floating flexible photovoltaic structure of the present invention; Figure 2 This is a side view of the high-stability floating flexible photovoltaic structure of the present invention; Figure 3 This is a partial enlarged view of the high-stability floating flexible photovoltaic structure of the present invention; Figure 4 This is a diagram of a flexible photovoltaic structure; Figure 5 A supporting fixture structure for the wave-breaking board; Figure 6 This is the flexible photovoltaic vertical displacement change curve under different wave-breaking board lengths.

[0024] Among them: 1-fixed pile foundation; 2-flexible photovoltaic module; 2.1-sealing rubber cover; 2.2-sealing port; 2.3-photovoltaic cell; 2.4-watertight cavity; 2.5-sealing gel coat; 3-operation and maintenance channel; 4-connecting block; 5-anchoring system; 6-mooring rope; 7-wave-breaking board; 7.1-wave-breaking board supporting structure; 7.2-wave-breaking board supporting fixture; 7.2.1-pad; 7.2.2-fixing part; 7.2.3-tightener; 7.2.4-pile ring; 7.2.5-connecting rod; 7.2.6-supporting block; 8-photovoltaic module connecting ring; 9-hinge. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and marked in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings: See also Figure 1-5 , the present invention discloses a high-stability floating flexible photovoltaic structure, including a fixed pile foundation 1, a wave-breaking board 7, a flexible photovoltaic module 2 and an anchoring system 5; The wave-breaking board 7 is arranged on the fixed pile foundation 1. The wave-breaking board 7 has bending rigidity and can reduce the wave energy transmitted to the bottom of the flexible photovoltaic module 2 by reflecting the wave energy. An operation and maintenance channel 3 is arranged between the fixed pile foundations 1 of each two wave-breaking boards 7 to facilitate entry by boat for operation and maintenance.

[0032] The wave-breaking board 7 is arranged in the wave-breaking board supporting structure 7.1 and fixed on the fixed pile foundation 1 through the wave-breaking board supporting fixture 7.2. The wave-breaking board supporting fixture 7.2 comprises a supporting block 7.2.6, a pad 7.2.1, a fixing part 7.2.2, a pile ring 7.2.4, a tightener 7.2.3 and a connecting rod 7.2.5; the wave-breaking board supporting structure 7.1 is supported by the supporting block 7.2.6 and fixed by the pad 7.2.1 and the fixing part 7.2.2; the supporting block 7.2.6 is fixedly connected to the pile ring 7.2.4 through the connecting rod 7.2.5, and the pile ring 7.2.4 is fixed to the fixed pile foundation 1 through the tightener 7.2.3. The wave-breaking board support structure 7.1 mainly plays the role of clamping the wave-breaking board 7, and the wave-breaking board support fixture 7.2 connects the wave-breaking board support structure 7.1 and the fixed pile foundation 1. The support device supports the installation of wave-breaking boards 7 of different lengths to adapt to the wave conditions in different sea areas. The pile ring 7.2.4 surrounds the fixed pile foundation 1 and is tightened and fixed by the tightener 7.2.3. The four corners of the wave-breaking board support structure 7.1 have rods extending outwards. The rods can be inserted into the space between the support block 7.2.6 and the pad 7.2.1. The wave-breaking board support structure 7.1 is fixed by the pin of the fixing member 7.2.2 on the pad 7.2.1, so as to support the wave-breaking board 7. The fixing member 7.2.2 can be a pin.

[0033] The fixed pile foundation 1 is connected to the flexible photovoltaic assembly 2; the flexible photovoltaic assembly 2 is connected to the fixed pile foundation 1 through the photovoltaic assembly connection ring 8. The flexible photovoltaic assembly 2 is connected to the anchor system 5 through the connection block 4 set between the flexible photovoltaic assemblies 2. The flexible photovoltaic assembly 2 is connected to the connection block 4 through the hinge 9. The connection block 4 is connected to the anchor system 5 through the mooring cable 6. The photovoltaic assembly connection ring 8 limits the horizontal movement of the photovoltaic platform, but allows the anchor system 5 of the photovoltaic platform to move vertically, which can enable the flexible photovoltaic to adapt to the changes in the water surface caused by the tide. The end of the flexible photovoltaic assembly 2 is connected to the connection block 4 through the hinge 9. The connection block 4 is used to provide a mooring point for the flexible photovoltaic, and at the same time provide a transfer interface for the flexible photovoltaic cable lead, and also avoid the flexible photovoltaic length being too long, thereby reducing the risk of affecting the power generation of the entire photovoltaic field when the flexible photovoltaic structure is torn or damaged.

[0034] The flexible photovoltaic module 2 includes a photovoltaic cell 2.3 and a watertight cavity 2.4; the photovoltaic cell 2.3 is arranged inside the watertight cavity 2.4; a watertight gel coat 2.5 is arranged at the bottom of the watertight cavity 2.4; a sealant cover 2.1 is arranged at the top of the watertight cavity 2.4. A sealing opening 2.2 is arranged at the top of the watertight cavity 2.4. When a problem occurs with the photovoltaic cell 2.3, maintenance can be performed by opening the sealant cover 2.1. When the flexible photovoltaic module 2 is in normal working state, the sealant cover 2.1 is closed and the seal is performed through the sealing opening 2.2.

[0035] To illustrate the advantages of the present invention, see Figure 6 , the present invention compares the flexible photovoltaic vertical displacement (dimensionless) under different wave-breaking board lengths, the vertical axis is the flexible photovoltaic displacement in the frequency domain space (dimensionless relative to the water depth), the horizontal axis is the flexible photovoltaic panel length (dimensionless relative to the water depth), and the dimensionless wave number of the incident wave is 2 (kh, k is the incident wave number, h is the water depth). It can be seen that as the length of the wave-breaking board increases, the vertical movement amplitude of the flexible photovoltaic decreases, and when the length of the wave-breaking board increases to 60% of the water depth, the movement amplitude of the flexible photovoltaic is reduced by about 57% compared with the case without wave-breaking measures.

[0036] The design of the wave-breaking board 7 of the high-stability floating flexible photovoltaic structure of the present invention can effectively reflect wave energy and reduce the wave impact transmitted to the bottom of the flexible photovoltaic module 2, thereby protecting the photovoltaic module from wave damage. The wave-breaking board support structure 7.1 and its fixing device (wave-breaking board support fixture 7.2) allow the installation of wave-breaking boards 7 of different lengths to adapt to the wave conditions in different sea areas, ensuring that the photovoltaic structure can remain stable under various wave environments. The photovoltaic module connection ring 8 limits the horizontal movement of the photovoltaic platform, but allows the anchoring system 5 to move vertically, which adapts to the water surface changes caused by the tide and ensures the continuous and stable operation of the photovoltaic system. The design of the connecting block 4 and the hinge 9 enables the flexible photovoltaic module 2 to be flexibly connected to the anchoring system 5, while avoiding the risk of tearing or damage caused by the excessive length of the flexible photovoltaic. The flexible photovoltaic module 2 adopts a combined design of the photovoltaic cell 2.3 and the watertight cavity 2.4 to ensure the stable operation of the photovoltaic cell 2.3 in a harsh marine environment. The design of the watertight cavity 2.4 and the sealant cover 2.1 allows for easy maintenance of the photovoltaic cell 2.3 when problems occur, while ensuring the sealing under normal working conditions.

[0037] One embodiment of the present invention provides a high-stability floating flexible photovoltaic structure, including a fixed pile foundation, a wave-breaking board, a flexible photovoltaic module and an anchoring system; first, according to the geographical and geological conditions of the water area, an appropriate location is selected to install the fixed pile foundation. These pile foundations go deep into the water bottom to provide a solid foundation support for the entire photovoltaic structure; a series of wave-breaking boards are set on the fixed pile foundation. These wave-breaking boards are made of high-strength, corrosion-resistant materials and have a certain bending stiffness. Their main function is to reduce the direct impact of waves on the flexible photovoltaic module and reduce the degree of wave energy transmitted to the bottom of the photovoltaic module. The wave-breaking board is fixed on the pile foundation to ensure its stability in wind and waves; the flexible photovoltaic module is made of lightweight, high-strength materials and has good flexibility and durability. These components are laid on the water surface above the wave-breaking board and connected to the fixed pile foundation; in order to further enhance the stability of the photovoltaic structure, an anchoring system is used to connect the flexible photovoltaic module to the underwater foundation. When installing the anchoring system, it is necessary to ensure that the connection between the anchor chain and the anchor block is firm and reliable, and the connection part with the flexible photovoltaic module is properly debugged and inspected. At the same time, the overall performance of the anchoring system also needs to be verified to ensure its stability and reliability in long-term operation.

[0038] In summary, the present invention provides a highly stable floating flexible photovoltaic structure, which effectively reduces the direct impact of waves on the photovoltaic structure and enhances the wind and wave resistance of the structure by combining a fixed pile foundation with a wave-breaking board; the design of the wave-breaking board supporting structure and its fixture ensures the stability of the wave-breaking board in a complex marine environment and further improves the stability of the overall structure; the flexible photovoltaic module is connected to the fixed pile foundation through a photovoltaic module connecting ring, which not only ensures the stability of the structure, but also allows the photovoltaic module to adapt to the fluctuation of the water surface to a certain extent, thereby improving its durability; the photovoltaic module adopts a watertight cavity design inside, which effectively prevents moisture intrusion and prolongs the service life of the photovoltaic cells; an operation and maintenance channel is arranged between the fixed pile foundations of every two wave-breaking boards, It provides a convenient passage for operation and maintenance personnel, reducing the difficulty and cost of operation and maintenance; the flexible photovoltaic module is connected to the connection block by a hinge, which is convenient for the disassembly and replacement of the photovoltaic module and improves the operation and maintenance efficiency; the photovoltaic cell is arranged inside the watertight cavity, which effectively avoids the interference of environmental factors on the performance of the cell and improves the power generation efficiency; the sealant cover and sealing port arranged on the top of the watertight cavity ensure the waterproof performance and safety of the photovoltaic module in harsh environments; the high-stability floating flexible photovoltaic structure of the present invention not only solves the shortcomings of traditional marine photovoltaic structures in stability, durability and operation and maintenance efficiency, but also improves the power generation efficiency and safety through technological innovation, providing strong support for the sustainable development of the marine photovoltaic industry.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-stability floating flexible photovoltaic structure, characterized in that: It comprises a fixed pile foundation (1), a wave-breaking plate (7), a flexible photovoltaic module (2) and an anchoring system (5); The wave-breaking plate (7) is arranged on a fixed pile foundation (1); the fixed pile foundation (1) is connected to a flexible photovoltaic assembly (2); and the flexible photovoltaic assembly (2) is connected to an anchoring system (5).

2. The high-stability floating flexible photovoltaic structure according to claim 1, characterized in that: A connecting block (4) is provided between the flexible photovoltaic components (2).

3. The high-stability floating flexible photovoltaic structure according to claim 2, characterized in that: The flexible photovoltaic assembly (2) is connected to the connection block (4) via a hinge (9).

4. The high-stability floating flexible photovoltaic structure according to claim 2, characterized in that: The connection block (4) is connected to the anchoring system (5).

5. The high-stability floating flexible photovoltaic structure according to claim 1, characterized in that: The flexible photovoltaic assembly (2) is connected to the fixed pile foundation (1) via a photovoltaic assembly connecting ring (8).

6. The high-stability floating flexible photovoltaic structure according to claim 1, characterized in that: An operation and maintenance channel (3) is provided between the fixed pile foundations (1) of every two wave-breaking plates (7).

7. The high-stability floating flexible photovoltaic structure according to claim 1, characterized in that: The wave-breaking board (7) is arranged in a wave-breaking board supporting structure (7.1) and is fixed on a fixed pile foundation (1) via a wave-breaking board supporting fixture (7.2).

8. The high-stability floating flexible photovoltaic structure according to claim 7, characterized in that: The wave-breaking board supporting fixture (7.2) comprises a supporting block (7.2.6), a pad (7.2.1), a fixing piece (7.2.2), a pile ring (7.2.4), a tightener (7.2.3) and a connecting rod (7.2.5); The wave-breaking plate supporting structure (7.1) is supported by a supporting block (7.2.6) and fixed by a pad (7.2.1) and a fixing member (7.2.2); the supporting block (7.2.6) is fixedly connected to a pile ring (7.2.4) via a connecting rod (7.2.5), and the pile ring (7.2.4) is fixed to a fixed pile foundation (1) via a tightener (7.2.3).

9. The high-stability floating flexible photovoltaic structure according to claim 1, characterized in that: The flexible photovoltaic module (2) comprises a photovoltaic cell sheet (2.3) and a watertight cavity (2.4); The photovoltaic cell sheet (2.3) is arranged inside the watertight cavity (2.4); a watertight gel coat (2.5) is arranged at the bottom of the watertight cavity (2.4); and a sealing glue cover (2.1) is arranged at the top of the watertight cavity (2.4).

10. The high-stability floating flexible photovoltaic structure according to claim 9, characterized in that: A sealing opening (2.2) is provided at the top of the watertight cavity (2.4).

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