Offshore photovoltaic module and offshore photovoltaic power generation device

Abstract

The invention relates to an offshore photovoltaic module and an offshore photovoltaic power generation device, and relates to the technical field of offshore photovoltaic power generation. The offshore photovoltaic module comprises a seat body and a frame body. The seat body floats on the sea surface and is used for bearing the photovoltaic module. The frame body is arranged on the base body and located between the base body and the photovoltaic module. The frame body comprises a fixed part and a movable part, and the fixed part is arranged on the seat body and used for supporting the movable part; the movable part is arranged on the fixed part and can move in the direction away from or close to the fixed part, and the photovoltaic module is arranged at the position, away from the fixed part, of the movable part. According to the offshore photovoltaic module, when the offshore environment is severe, the photovoltaic module is moved, the photovoltaic module is prevented from being damaged, and the overall stability and safety of the offshore photovoltaic module are improved; when the marine environment is good, the photovoltaic module is moved, light energy absorption is maximized, and the utilization rate of light energy is improved.

Description

Technical Field

[0001] This application relates to the field of offshore photovoltaic power generation technology, and more specifically, to an offshore photovoltaic module and an offshore photovoltaic power generation device. Background Technology

[0002] With societal development, the rational development of marine resources has gradually become an essential path for the development of clean energy. This includes renewable clean energy sources such as offshore wind power and photovoltaic power generation. Unlike onshore photovoltaic power plants, marine facilities typically consist of floating hulls carrying photovoltaic power generation equipment for power generation.

[0003] In related technologies, offshore photovoltaic power stations typically use pile-based offshore photovoltaic module support devices to support photovoltaic modules. However, in practical applications, due to the complexity of the marine environment, seawater erosion, wave scouring, and the uncertainty of seabed geological conditions, the stability and corrosion resistance of pile-based offshore photovoltaic module support devices are difficult to meet the support requirements of photovoltaic modules. Furthermore, since photovoltaic modules cannot move within the pile-based support device, it is difficult to guarantee the utilization rate of light energy by the photovoltaic modules. Summary of the Invention

[0004] In view of this, this application provides a marine photovoltaic module and a marine photovoltaic power generation device to solve the problems of poor stability of the support device for photovoltaic modules, high construction difficulty and inconvenient installation in related technologies.

[0005] To achieve the above objectives, this application provides a marine photovoltaic module, including a base and a frame. The base floats on the sea surface and is used to support the photovoltaic module. The frame is disposed on the base and located between the base and the photovoltaic module. The frame includes a fixed part and a movable part. The fixed part is disposed on the base and is used to support the movable part; the movable part is disposed on the fixed part and is configured to move in a direction away from or towards the fixed part. The photovoltaic module is disposed on the movable part at a position away from the fixed part.

[0006] Furthermore, the movable part includes an automatic telescopic assembly, which includes a storage column and a moving rod. The storage column is fixedly mounted on the fixed part, and a cavity is formed inside the storage column. The moving rod is slidably inserted into the cavity, with one end of the moving rod away from the fixed part extending to the outside of the cavity. The photovoltaic module is mounted on the moving rod.

[0007] Furthermore, a power component is also provided inside the storage column, which is located at the bottom of the cavity and is used to push the moving rod.

[0008] Furthermore, a contact plate is provided on the end of the storage column facing the photovoltaic module, and the contact plate is made of elastic material; the side of the photovoltaic module facing the fixing part can abut against the contact plate.

[0009] Furthermore, the base includes multiple floats connected to form a floating matrix, the fixed part includes multiple fulcrums, all of which are supported at the edge of the floating matrix; the movable part is located at the center of the floating matrix.

[0010] Furthermore, the base includes an ecological board, which is disposed at the edge of the floating matrix and extends below the sea surface in a direction away from the base.

[0011] This application also provides a marine photovoltaic power generation device, including a cleaning component and the marine photovoltaic module described in any of the above embodiments. The cleaning component includes a liquid storage component and a spray component. The liquid storage component is placed on the fixed part, and the spray component is in liquid guiding communication with the liquid storage component. The outlet of the spray component is arranged facing the photovoltaic module.

[0012] Furthermore, at least two liquid storage components are provided on the fixed portion, and a plurality of liquid storage components are evenly distributed along the circumference of the movable portion. The plurality of liquid storage components are in liquid-conducting communication with each other.

[0013] Furthermore, the cleaning assembly also includes a liquid collection device, which includes a connecting pipe and a liquid collection port. The liquid collection port is located at the end of the connecting pipe and is connected to the liquid storage device through the connecting pipe.

[0014] Furthermore, a flow guide shroud is provided at the liquid collection port, the flow guide shroud is arranged vertically upwards, and the liquid collection port extends into the flow guide shroud and is located at the bottom of the flow guide shroud. The projected area of ​​the liquid collection port in the vertical direction is S1, and the projected area of ​​the flow guide shroud in the vertical direction is S2, satisfying: S1 < S2.

[0015] The beneficial effects of this application are as follows:

[0016] The marine photovoltaic (PV) module of this application, in use, has its PV modules mounted on a movable part of a frame, which in turn is mounted on a base. The base then supports the PV modules and allows them to float on the sea surface. In rough sea conditions, the movable part moves closer to the fixed part, causing the PV modules to move closer to the base, shortening the distance between the base and the frame and lowering the overall center of gravity of the marine PV module to improve overall stability. In favorable sea conditions, the movable part moves away from the fixed part, causing the PV modules to move away from the base, increasing the distance between the base and the frame. This allows the PV modules to better receive sunlight, maximizing light energy absorption and improving the power generation efficiency of the PV modules.

[0017] The marine photovoltaic module of this application can be moved to avoid damage to the photovoltaic module in harsh marine environments, thereby improving the overall stability and safety of the application; and can be moved to maximize the absorption of light energy in favorable marine environments, thereby improving the utilization rate of light energy of the application.

[0018] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of a marine photovoltaic power generation device provided in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the structure of a marine photovoltaic module provided in an embodiment of this application.

[0022] Figure 3 A schematic diagram of the structure of a marine photovoltaic module provided in an embodiment of this application from another perspective;

[0023] Figure 4 This is a schematic diagram of the structure of the seat provided in an embodiment of this application from one perspective;

[0024] Figure 5 This is a schematic diagram of the cleaning component provided in an embodiment of this application from one perspective.

[0025] Figure 6 This is a structural schematic diagram of the cleaning component provided in an embodiment of this application.

[0026] icon:

[0027] 100-Seat; 110-Floating plate; 120-Ecological board; 200-Frame; 210-Fixing part; 211-Fulcrum; 220-Moving part; 221-Contact plate; 222-Storage column; 223-Moving rod; 224-Power component; 225-Cavity; 300-Photovoltaic module; 400-Cleaning component; 410-Liquid storage component; 411-Water pump; 420-Spraying component; 421-Liquid outlet; 430-Conducting pipe; 440-Liquid collection component; 441-Liquid collection port; 442-Connecting pipe; 443-Flow guide cover. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] This application provides a marine photovoltaic module to address the problems of poor stability and low light energy utilization in related technologies.

[0032] Please see Figures 1 to 3A marine photovoltaic module includes a base 100 and a frame 200. The base 100 floats on the sea surface and supports the photovoltaic module 300. The frame 200 is disposed on the base 100 and located between the base 100 and the photovoltaic module 300. The frame 200 includes a fixed part 210 and a movable part 220. The fixed part 210 is disposed on the base 100 and supports the movable part 220. The movable part 220 is disposed on the fixed part 210 and is configured to move in a direction away from or towards the fixed part 210. The photovoltaic module 300 is disposed on the movable part 220 at a position away from the fixed part 210.

[0033] Specifically, in this embodiment, the photovoltaic module 300 is mounted on the movable part 220, and the frame 200 is mounted on the base 100, which can support the photovoltaic module 300 to float on the sea surface. In harsh marine conditions, the movable part 220 moves closer to the fixed part 210, causing the photovoltaic module 300 to also move closer to the base 100, shortening the distance between the base 100 and the frame 200, thus lowering the overall center of gravity of the photovoltaic module and improving overall stability. In favorable sea conditions, the movable part 220 moves away from the fixed part 210, causing the photovoltaic module 300 to move away from the base 100, increasing the distance between the base 100 and the frame 200, allowing the photovoltaic module 300 to better receive sunlight, maximizing light energy absorption, and improving the power generation efficiency of the photovoltaic module 300.

[0034] Compared to related technologies, the pile-based offshore photovoltaic module support device cannot move the photovoltaic module 300 when supporting it. In harsh marine environments, it can only rely on its own structural strength and material strength to resist the harsh environment. This places extremely high demands on the stability and corrosion resistance of the support device, resulting in extremely high cost, difficult construction, and unreliable support effect.

[0035] In this embodiment, the offshore photovoltaic module can retract its frame 200 and shorten the distance between the photovoltaic module 300 and the base 100 when the marine environment is harsh, thus lowering the overall center of gravity and making the overall structure more stable, reducing the requirements for materials and structure. Furthermore, in a pile-based offshore photovoltaic module support device, the photovoltaic module 300 cannot move while supported, which cannot guarantee the utilization rate of solar energy by the photovoltaic module 300. In this embodiment, the offshore photovoltaic module can change the distance between the movable part 220 and the fixed part 210, thereby changing the distance between the photovoltaic module 300 and the base 100, allowing the photovoltaic module 300 to extend to a suitable position to receive sunlight, thereby maximizing the utilization rate of solar energy.

[0036] In one embodiment, exemplarily, such as Figure 2 , Figure 3 As shown, the movable part 220 includes an automatic telescopic assembly, which includes a storage column 222 and a moving rod 223. The storage column 222 is fixedly mounted on the fixed part 210, and a cavity 225 is formed inside the storage column 222. The moving rod 223 is slidably inserted into the cavity 225, with one end of the moving rod 223 extending out of the cavity 225. The photovoltaic module 300 is mounted on the moving rod 223. When it is necessary to move the photovoltaic module 300, the storage column 222 is fixedly mounted on the fixed part 210, and the moving rod 223 slides relative to the storage column 222 within the cavity 225 of the storage column 222. That is, the moving rod 223 drives the photovoltaic module 300 to move, causing the photovoltaic module 300 to move away from or closer to the fixed part 210.

[0037] By setting up the storage column 222, the moving rod 223 can be protected, preventing it from being in prolonged contact with seawater or other external environments, which could affect its ability to slide. The storage column 222 can also restrict the sliding trajectory of the moving rod 223, allowing it to slide only in a preset direction, thereby controlling the movement path of the photovoltaic module 300 and improving the reliability of this embodiment.

[0038] In one embodiment, exemplarily, such as Figure 2 , Figure 3 As shown, a power component 224 is also provided inside the storage column 222. The power component 224 is located at the bottom of the cavity 225 and is used to push the moving rod 223. The power component 224 can automatically adjust the position of the moving rod 223, allowing the photovoltaic module 300 to dynamically adjust its height as needed without manual intervention. Of course, the power component 224 can also be remotely controlled through a control system, allowing the operator to adjust the position of the photovoltaic module 300 in real time through a remote monitoring system, improving the convenience and flexibility of operation in this embodiment.

[0039] The power component 224 can be arbitrarily selected according to actual conditions, as long as it meets the movement requirements of the moving rod 223. In this embodiment, the power component 224 is set as an electric push rod. This allows the power component 224 to provide precise thrust, ensuring that the movement position and speed of the moving rod 223 are accurately controllable, avoiding errors caused by manual adjustment. During movement, fine adjustments can also be made to keep the photovoltaic module 300 at the optimal illumination angle and height, improving power generation efficiency. On the other hand, the electric push rod also ensures a smooth thrust, making the movement of the moving rod 223 within the cavity 225 more stable, reducing shaking or impact caused by sudden movement.

[0040] In one embodiment, exemplarily, such as Figure 2 , Figure 3As shown, a contact plate 221 is provided on the end of the storage column 222 facing the photovoltaic module 300. The contact plate 221 is made of elastic material; the side of the photovoltaic module 300 facing the fixing part 210 can abut against the contact plate 221. The contact plate 221 made of elastic material can provide good shock absorption, so that when the photovoltaic module 300 moves towards the base 100, it will not directly contact the storage column 222, avoiding collision between the photovoltaic module 300 and the storage column 222, which could cause damage to the photovoltaic module 300.

[0041] In one embodiment, exemplarily, such as Figure 4 As shown, the base 100 includes multiple floats 110 connected to form a floating matrix. The fixed part 210 includes multiple support points 211, all of which are supported at the edges of the floating matrix. The movable part 220 is located at the center of the floating matrix. The floating matrix composed of multiple floats 110 ensures that the base 100 provides sufficient support for the frame 200, allowing the frame 200 and photovoltaic module 300 to float stably on the sea surface. The multiple support points 211 of the fixed part 210, supported at the edges of the floating matrix, significantly enhance the stability of the entire fixed part 210, preventing swaying or displacement caused by wave impact or wind. Furthermore, the multiple support points 211 can evenly distribute the weight of the entire frame 200 and photovoltaic module 300, reducing the burden on individual support points 211 and preventing deformation or damage caused by uneven stress.

[0042] The fulcrum 211 is evenly distributed at the edge of the floating matrix, and the movable part 220 is set at the center of the floating matrix, so that the overall weight of the frame 200 is evenly distributed on the seat 100, ensuring the stability of the seat 100 during the load-bearing process and preventing the seat 100 from tilting due to uneven force, which would affect the load-bearing effect of the seat 100 in this embodiment.

[0043] In one embodiment, exemplarily, such as Figure 4 As shown, the base 100 includes an ecological board 120, which is disposed at the edge of the floating matrix and extends below the sea surface in a direction away from the base 100. The ecological board 120 extending below the sea surface facilitates the attachment of marine microorganisms. Thus, this embodiment can better integrate into the ecosystem and avoid causing damage to it.

[0044] In one embodiment, exemplarily, such as Figure 4As shown, the ecological board 120 is set at an angle. When waves occur on the sea surface, seawater can be washed along the inclined ecological board 120 onto the seat 100. The seat 100 provides more sufficient living space for different marine microorganisms. The attached marine microorganisms can also prevent the seat 100 from being continuously eroded by seawater, improve the structural strength of the seat 100, and extend the service life of the seat 100.

[0045] It should be noted that multiple water passage holes are evenly distributed on the ecological board 120. Seawater can pass freely through the water passage holes, facilitating seawater circulation and ensuring that the marine microorganisms attached to the ecological board 120 have sufficient seawater, increasing the survival rate of the microorganisms and further improving the adaptability of this embodiment to the ecosystem.

[0046] In one embodiment, multiple ecological plates 120 are evenly distributed along the edge of the base 100, and not all ecological plates 120 have water passage holes. Specifically, the ecological plate 120 includes a water passage plate and an inclined plate, which are alternately arranged. The water passage plate has water passage holes. In this way, microorganisms that require seawater can attach to the water passage plate, and the water passage holes can ensure the free flow of seawater, providing sufficient seawater for the microorganisms. The inclined plate is used to ensure that seawater can be washed onto the base 100 along the inclined plate, facilitating the attachment of other types of marine microorganisms to the base 100, and ensuring the integration of this embodiment with the ecological environment.

[0047] Please continue reading. Figure 5 , Figure 6 This application also provides a marine photovoltaic power generation device, including a cleaning component 400 and the marine photovoltaic module in any of the above embodiments. The cleaning component 400 includes a liquid storage component 410 and a spray component 420. The liquid storage component 410 is placed on the fixing part 210, and the spray component 420 is in liquid guiding communication with the liquid storage component 410. The outlet 421 of the spray component 420 is arranged facing the photovoltaic module 300.

[0048] This embodiment includes the marine photovoltaic module in any of the above embodiments, and thus possesses all the beneficial effects of marine photovoltaic modules, which will not be elaborated further here.

[0049] After a period of use, dust or other impurities often accumulate on the surface of the photovoltaic module 300, affecting its utilization rate of light energy. At this time, the spray unit 420 can absorb the liquid in the liquid storage unit 410 and spray it onto the surface of the photovoltaic module 300 to clean it, preventing impurities from obstructing the surface and ensuring the photovoltaic module 300's utilization rate of light energy.

[0050] It is understandable that the liquid storage component 410 is set on the fixed part 210, which is equivalent to adding a counterweight to the fixed part 210, moving the center of gravity of the frame 200 to a position closer to the fixed part 210. In this way, the frame 200 has better stability when supporting the photovoltaic module 300, and will not sway due to top-heavy conditions, thus making the overall stability of this embodiment better.

[0051] In one embodiment, exemplarily, such as Figure 5 , Figure 6 As shown, at least two liquid storage components 410 are provided on the fixed part 210, and multiple liquid storage components 410 are evenly distributed along the circumference of the movable part 220. The multiple liquid storage components 410 are interconnected by liquid conduction. The even distribution of multiple liquid storage components 410 on the fixed part 210 increases the overall liquid storage capacity of the liquid storage components 410, thereby ensuring that the spray component 420 has sufficient liquid to supply the spray component 420 when it needs to rinse and clean the photovoltaic module 300. The even distribution of the liquid storage components 410 along the circumference of the movable part 220 further ensures a uniform weight distribution for this embodiment, guaranteeing the overall stability of this embodiment.

[0052] The liquid storage components 410 are interconnected, so that when the spray component 420 is connected to any liquid storage component 410, the liquid in the multiple liquid storage components 410 can be used. When the liquid in the multiple liquid storage components 410 is used, it will decrease synchronously, further ensuring that the liquid storage component 410 has a uniform weight distribution on the fixed part 210.

[0053] In one embodiment, for example, a connecting pipe 430 is provided between adjacent liquid storage units 410, and the connecting pipe 430 connects the adjacent liquid storage units 410, so that the liquid in the multiple liquid storage units 410 can increase or decrease synchronously, ensuring that the liquid in the liquid storage units 410 is used evenly, and the multiple liquid storage units 410 have the same weight.

[0054] In one embodiment, for example, a spray head is provided at the end of the spray member 420 near the photovoltaic module 300, and the spray head is vertically positioned above the photovoltaic module 300. When the spray member 420 cleans the photovoltaic module 300, liquid flows out from the spray head and falls onto the photovoltaic module 300 to clean it.

[0055] In one embodiment, for example, a water pump 411 is provided inside the liquid storage container 410. The water pump 411 is in liquid guiding communication with the spray nozzle 420. The water pump 411 can deliver the liquid in the liquid storage container 410 into the spray nozzle 420 and spray the liquid out from the spray head. In this way, when it is necessary to clean the photovoltaic module 300, the water pump 411 pumps the liquid in the liquid storage container 410 into the spray nozzle 420, and then sprays it out from the spray head to clean the photovoltaic module 300. By pumping the liquid out by the water pump 411, the liquid can also have a certain flow rate, thereby improving the cleaning effect of the cleaning module 400.

[0056] In one embodiment, exemplarily, such as Figure 5 , Figure 6 As shown, the cleaning assembly 400 also includes a liquid collection component 440, which includes a connecting pipe 442 and a liquid collection port 441. The liquid collection port 441 is located at the end of the connecting pipe 442 and is connected to the liquid storage component 410 through the connecting pipe 442. In this way, the liquid collected at the liquid collection port 441 can be conducted into the liquid storage component 410 through the connecting pipe 442, so that the liquid storage component 410 can always contain liquid for use by the spray component 420. In addition, the liquid collection port 441 also enables the cleaning assembly 400 of this embodiment to complete self-circulation, that is, without the operator adding liquid to the liquid storage component 410, rainwater, splashed seawater, etc. collected at the liquid collection port 441 can all flow into the liquid storage component 410, thereby storing and collecting it for use by the spray component 420.

[0057] In one embodiment, exemplarily, such as Figure 5 , Figure 6 As shown, a guide shroud 443 is provided at the liquid collection port 441. The guide shroud 443 is vertically upward, and the liquid collection port 441 extends into the guide shroud 443 and is located at the bottom of the guide shroud 443. The projected area of ​​the liquid collection port 441 in the vertical direction is S1, and the projected area of ​​the guide shroud 443 in the vertical direction is S2, satisfying: S1 < S2. The upward orientation of the guide shroud 443 facilitates the collection of rainwater. Since there is frequent rainy weather in the ocean, the collection of rainwater through the guide shroud 443 can replenish the liquid in the liquid storage unit 410 for use by the spray unit 420. Furthermore, during rainy weather, natural rainfall will also clean the photovoltaic module 300. The liquid collected in the liquid storage unit 410 will be used to clean the photovoltaic module 300 when there is no rain for a long time, ensuring that the photovoltaic module 300 remains clean for a long period of use, thereby ensuring the utilization rate of light energy by the photovoltaic module 300.

[0058] The larger area of ​​the guide shroud 443 makes it easier for the guide shroud 443 to collect rainwater. The rainwater falling into the guide shroud 443 will flow along the guide shroud 443 to the liquid collection port 441, and then be collected into the liquid storage component 410 through the connecting pipe 442, thus improving the structural rationality of this embodiment.

[0059] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0060] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A marine photovoltaic module, characterized in that, include: A base (100) floats on the sea surface and is used to support photovoltaic modules (300); A frame (200) is disposed on the base (100) and located between the base (100) and the photovoltaic module (300); The frame (200) includes a fixed part (210) and a movable part (220). The fixed part (210) is disposed on the base (100) and is used to support the movable part (220). The movable part (220) is disposed on the fixed part (210) and is configured to move in a direction away from or close to the fixed part (210). The photovoltaic module (300) is disposed on the movable part (220) at a position away from the fixed part (210).

2. The offshore photovoltaic module according to claim 1, characterized in that, The movable part (220) includes an automatic telescopic assembly, which includes a storage column (222) and a moving rod (223). The storage column (222) is fixedly mounted on the fixed part (210), and a cavity (225) is opened inside the storage column (222). The movable rod (223) is slidably inserted into the cavity (225), and one end of the movable rod (223) away from the fixed part (210) extends to the outside of the cavity (225). The photovoltaic module (300) is mounted on the movable rod (223).

3. The offshore photovoltaic module according to claim 2, characterized in that, The storage column (222) is also equipped with a power component (224), which is located at the bottom of the cavity (225) and is used to push the moving rod (223).

4. The offshore photovoltaic module according to claim 2, characterized in that, The storage column (222) is provided with an abutment plate (221) at one end facing the photovoltaic module (300), and the abutment plate (221) is made of elastic material; the side of the photovoltaic module (300) facing the fixing part (210) can abut against the abutment plate (221).

5. The offshore photovoltaic module according to claim 1, characterized in that, The seat (100) includes multiple floats (110), which are connected to form a floating matrix. The fixed part (210) includes multiple fulcrums (211), which are all supported at the edge of the floating matrix. The movable part (220) is located at the center of the floating matrix.

6. The offshore photovoltaic module according to claim 5, characterized in that, The base (100) includes an ecological board (120), which is disposed at the edge of the floating matrix and extends below the sea surface in a direction away from the base (100).

7. A marine photovoltaic power generation device, characterized in that, Includes a cleaning component (400) and a marine photovoltaic module as described in any one of claims 1 to 6 above; The cleaning component (400) includes a liquid storage component (410) and a spray component (420). The liquid storage component (410) is placed on the fixing part (210). The spray component (420) is in liquid guiding communication with the liquid storage component (410). The liquid outlet (421) of the spray component (420) is arranged facing the photovoltaic module (300).

8. The offshore photovoltaic power generation device according to claim 7, characterized in that, At least two of the liquid storage components (410) are provided on the fixed part (210), and a plurality of the liquid storage components (410) are evenly distributed along the circumference of the movable part (220); Liquid is connected between the plurality of said liquid storage components (410).

9. The offshore photovoltaic power generation device according to claim 7, characterized in that, The cleaning assembly (400) further includes a liquid collection component (440), which includes a connecting pipe (442) and a liquid collection port (441). The liquid collection port (441) is located at the end of the connecting pipe (442) and is connected to the liquid storage component (410) through the connecting pipe (442).

10. The offshore photovoltaic power generation device according to claim 9, characterized in that, A flow guide is provided at the liquid collection port (441), the flow guide is arranged vertically upward, and the liquid collection port (441) extends into the flow guide and is located at the bottom of the flow guide; The vertical projection area of ​​the liquid collection port (441) is S1, and the vertical projection area of ​​the flow guide is S2, satisfying: S1 < S2.

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