Sinking and floating type ocean photovoltaic floating body

Abstract

The utility model discloses a sinking and floating type ocean photovoltaic floating body which can be arranged on the sea surface and can also be arranged in areas with large water level amplitude variation such as a river berthing pumped storage power station and the like to serve as amplitude-variable water level floating type photovoltaics. The ocean photovoltaic floating body comprises a plurality of floating plates which are connected end to end to form a closed ring, and independent sealed water isolation cabins are arranged in the floating plates; a substrate for mounting a glass photovoltaic module is hermetically arranged at the upper part of a marine photovoltaic floating body, so that an air chamber buckled on the sea surface is defined by the substrate and a floating plate base, and the adsorption effect of the floating body on the sea surface can be enhanced; the ocean photovoltaic floating bodies are connected through iron chains and can rotate relatively; a plurality of ocean photovoltaic floating bodies are fixedly connected to form an array, a floating channel for placing a cable is further arranged in the array, so that the overall stress of the array is more balanced and reasonable, and a steel wire rope net frame is further arranged in the array, so that the structural strength of the array is further improved.

Description

Technical Field

[0001] This utility model relates to the field of marine photovoltaics, specifically to a submersible marine photovoltaic float. Background Technology

[0002] With the development of photovoltaic technology, photovoltaics have been applied on a large scale and systematically in various fields. As the environmental problems brought about by the oil and petrochemical industry become increasingly prominent, the issue of clean and green energy is receiving more and more attention.

[0003] With the global development of the photovoltaic industry, photovoltaics have received increasing attention due to their advantages such as low cost and no pollution. The biggest challenge for photovoltaic power generation is that it requires a large amount of land. The ever-increasing land costs may restrict the further development of the photovoltaic industry. On this basis, using vast sea areas to deploy photovoltaic equipment for photovoltaic power generation will be a new opportunity for the further development of the photovoltaic industry. Compared with the water surface photovoltaics that are already being used in various reservoirs, lakes, fish ponds and other places, the large-scale application of photovoltaic power generation on the sea surface must solve the practical problems of high winds and rough seas. It is necessary to ensure that photovoltaic products can withstand the strong winds and waves at sea without being damaged.

[0004] The applicant has conducted continuous research on marine photovoltaic floating bodies for many years and has launched preliminary photovoltaic floating body products. After practical testing, it has been found that the existing photovoltaic floating body products have certain defects and shortcomings, such as insufficient wind and wave resistance, easy damage in extreme weather conditions, long production cycle, high cost, short service life, and easy wear and tear.

[0005] Based on this, the inventors proposed a more scientific and reasonable new generation of photovoltaic floating body products by adjusting the structural composition of the photovoltaic floating body. The new generation of photovoltaic floating body products features a floating marine photovoltaic design with higher structural strength and longer service life, as well as a shorter production cycle, lower production cost, and the ability to easily meet different power generation needs. Utility Model Content

[0006] To overcome the aforementioned problems, the inventors have designed a floating marine photovoltaic (PV) hull. This PV hull can be deployed on the sea surface or in a pumped-storage power station, serving as a variable-amplitude floating PV system. The PV hull comprises multiple interconnected floats forming a closed ring. Each float contains an independently sealed watertight chamber, ensuring buoyancy even in the event of partial leakage, thus not affecting the normal operation of the overall array. A substrate for mounting glass PV modules is sealed in the center of the PV hull, thereby forming an air chamber on the sea surface with the substrate and float base, which can increase buoyancy. The strong buoyancy of the floating body enhances its stability by adsorbing onto the sea surface. The individual marine photovoltaic floating bodies are connected by chains with small gaps between them, almost touching each other, and can rotate relative to each other, making them more suitable for wave-like movement on the sea surface. Multiple marine photovoltaic floating bodies are fixed together to form an array, which also includes a floating channel for cable installation. This channel supports the cables, resulting in a more balanced and reasonable stress distribution across the array. The floating design improves the array's ability to withstand high wave levels. A steel wire rope mesh frame further enhances the array's structural strength and extends its service life, thus completing this utility model.

[0007] Specifically, the purpose of this utility model is to provide a floating marine photovoltaic float 1, which includes multiple float plates 2 connected end to end to form a closed ring.

[0008] An independent, sealed watertight chamber is provided inside the float 2;

[0009] The floating plate 2 includes a base 21 and a baffle 22 located on the base. A substrate for mounting glass photovoltaic modules is supported on the inner side of the base 21. The baffle 22 surrounds the substrate and provides lateral restraint for the substrate.

[0010] The baffle 22 is provided with a pressure block 23 extending toward the inner side of the float body. A predetermined gap is left between the pressure block 23 and the base 21 to place and fix the substrate.

[0011] The float plate 2 is made of plastic by blow molding; the multiple float plates 2 are integrally formed or separately formed;

[0012] When the multiple floating plates 2 are formed separately, the two ends of the floating plate 2 are provided with abutting surfaces 24. A protruding protrusion 25 is provided on the abutting surface 24 at one end, and a concave groove 26 is provided on the abutting surface 24 at the other end. The protrusion 25 and the groove 26 provide a positioning reference for splicing two floating plates 2.

[0013] The outer side of the marine photovoltaic float, i.e. the outer side of the float plate 2, is set as a first arc surface 27, and a wear-resistant fabric layer is pasted on the first arc surface 27.

[0014] The outer side of the marine photovoltaic float, i.e. the outer side of the float plate 1, has an inwardly recessed area 28. A chain connecting ring is provided in the recessed area 28 so that two adjacent marine photovoltaic floats 1 are connected and fixed by a chain.

[0015] Multiple marine photovoltaic floats 1 are interconnected and arranged into a photovoltaic array of a predetermined shape, with floating channels 3 arranged around the photovoltaic array; one or more floating channels 3 are also optionally arranged inside the photovoltaic array; cables are carried through the floating channels 3.

[0016] The floating channel 3 includes multiple guide plates 31;

[0017] The cable guide plate 31 is a hollow and sealed strip, and its length is equal to or less than the length of the marine photovoltaic float 1.

[0018] Iron chain connecting rings are tied and installed on the wire guide plate 31, so that two adjacent wire guide plates 31 are connected and fixed by iron chains, thereby forming the floating channel 3;

[0019] Preferably, the guide plate 31 is also connected to the marine photovoltaic float 1 by an iron chain.

[0020] The upper surface of the wire guide plate 31 is provided with a recessed wire groove 32, and a partition plate 33 is provided in the wire groove 32. The partition plate 33 divides the wire groove into three areas, in which control lines, positive lines and negative lines are arranged in sequence. By adjusting the specific position of the partition plate 33, the center of gravity of the wire guide plate 31 after wiring is in the center position.

[0021] Preferably, a sunshade cover is also provided on the top of the cable tray 32.

[0022] The photovoltaic array is also equipped with a steel wire rope mesh frame 4;

[0023] The wire rope mesh frame includes multiple steel wire ropes that overlap horizontally and vertically. Two horseshoe buckles 43 are arranged at each position where the horizontal steel wire rope 41 and the vertical steel wire rope 42 overlap, and the horizontal steel wire rope 41 and the vertical steel wire rope 42 are fixed together by the horseshoe buckles 43.

[0024] The mesh size in the wire rope mesh frame 4 is basically equal to the outline size of the marine photovoltaic float 1, or basically equal to the outline size of the guide plate 31.

[0025] In the photovoltaic array, any marine photovoltaic float 1 is connected to other marine photovoltaic floats 1 or line board 31 by iron chains, and any line board 31 is connected to other line board 31 or marine photovoltaic float 1 by iron chains.

[0026] Preferably, each of the chains includes an odd number of iron rings; a steel wire rope with a steel wire rope mesh frame 4 is also threaded onto the middle iron ring.

[0027] This utility model also provides a method for installing a floating marine photovoltaic float, which includes the following steps:

[0028] Step 1: Apply sealant to the contact surface 24 of the floating plate 2;

[0029] Step 2: Arrange multiple floating plates 2 around the substrate so that the substrate extends into the gap between the pressure block 23 and the base 21; the protrusion 25 on the floating plate 2 is embedded into the groove 26 of another floating plate 2.

[0030] Step 3: Secure the two adjacent floating plates 2 by wrapping them with rope around the outside of the contact surface 24; fill the gap between the sealing block 23 and the base 21 with sealant to form the marine photovoltaic floating body 1;

[0031] Step 4: Attach abrasion-resistant fabric to the outside of the marine photovoltaic float 1;

[0032] Step 5: Use horseshoe buckles 43 to lock and fix the transverse steel wire rope 41 and the longitudinal steel wire rope 42 to form a steel wire rope mesh frame;

[0033] Step 6: Connect multiple marine photovoltaic floats 1 and the guide plate 31 into one unit by means of iron chains, and make the steel wire rope of the steel wire rope mesh frame pass through each iron chain, thereby obtaining a photovoltaic array.

[0034] The beneficial effects of this utility model include:

[0035] (1) The floating marine photovoltaic float provided by this utility model has multiple independent water-proof chambers inside the marine photovoltaic float. Even if some water-proof chambers are flooded, they can still provide basic buoyancy. The marine photovoltaic float is made up of multiple float plates, which is convenient for maintenance and replacement and can also reduce production costs.

[0036] (2) The floating marine photovoltaic float provided by this utility model has a substrate for installing glass photovoltaic modules and a float plate forming an air chamber that is fastened on the sea surface, which improves the adsorption force between the float and the sea surface and improves the stability of the float.

[0037] (3) The floating marine photovoltaic float provided by this utility model is connected to the line board by iron chain, and the gap between each module is small, which can better fit the sea surface. The sides of each module that come into contact with each other are set as arc surfaces to reduce wear. Wear-resistant fabric is also pasted in the severely worn areas to further improve the wear resistance.

[0038] (4) The floating marine photovoltaic float provided by this utility model is further provided with a steel wire rope mesh frame in the array formed by the marine photovoltaic float. The steel wire rope mesh frame is formed by locking and fastening with horseshoe buckles. The structure is simple and easy to disassemble. The mesh size of the steel wire rope mesh frame can be flexibly adjusted according to the arrangement needs and the setting position and number of floating channels. Attached Figure Description

[0039] Figure 1 This invention provides a schematic diagram of the overall structure of a floating marine photovoltaic float.

[0040] Figure 2 This invention provides a schematic diagram of the structure of the floating plate in a submersible marine photovoltaic float.

[0041] Figure 3 This invention provides a schematic diagram of the structure of the floating plate in a submersible marine photovoltaic float.

[0042] Figure 4 This diagram shows the structure of the wire guide plate provided by this utility model;

[0043] Figure 5 This invention provides a schematic diagram of the structure of a horseshoe buckle locking a steel wire rope within a steel wire rope mesh frame.

[0044] Figure 6 This invention provides a schematic diagram of a photovoltaic array structure.

[0045] Figure 7 A schematic diagram of the hydrofoil structure provided by this utility model is shown.

[0046] Figure Labels

[0047] 1-Marine photovoltaic floating body

[0048] 2-Floating Plate

[0049] 21-Base

[0050] 22-stop

[0051] 23-Blocking

[0052] 24-Abutting plane

[0053] 25-protrusion

[0054] 26-groove

[0055] 27-First Arc

[0056] 28-Depression area

[0057] 3-Floating Channel

[0058] 31-Wire guide plate

[0059] 32-Cable Groove

[0060] 33-partition

[0061] 4-Steel wire rope mesh frame

[0062] 41-Horizontal steel wire rope

[0063] 42-Longitudinal steel wire rope

[0064] 43-Horseshoe buckle

[0065] 431-U-shaped rod

[0066] 432-Connector

[0067] 433-Nut

[0068] 5-hydrofoil

[0069] 51-Geocoupler Curved Surface

[0070] 6- Iron Chain Detailed Implementation

[0071] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more apparent.

[0072] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0073] This utility model provides a submersible marine photovoltaic float, such as Figure 1 and Figure 2 As shown, the marine photovoltaic float 1 includes multiple float plates 2, which are connected end to end to form a closed ring; the overall horizontal outline of the marine photovoltaic float is rectangular, triangular or hexagonal, preferably square, and its overall structure is flat.

[0074] An independent, sealed watertight compartment is provided inside the float 2. The watertight compartment can be hollow, i.e., filled with air, or it can be filled with plastic or foam. By setting up this watertight compartment, the service life of the marine photovoltaic float 1 can be extended, and it can cope with larger waves. Even if some floats are damaged and water enters, the marine photovoltaic float 1 as a whole still has sufficient buoyancy and can float normally on the sea surface.

[0075] In a preferred embodiment, the float 2 has two foaming agent injection ports, into which foaming agent can be injected. In actual operation, other materials can also be optionally added to the foaming agent injection ports to adjust the weight of the float 2 itself. After the marine photovoltaic float 1 is assembled from the floats 2, the weight of each float 2 of the marine photovoltaic float 1 may not be balanced due to processing errors and wear during use. By adding gravel or other materials to the foaming agent injection ports, the weight of each float 2 on the marine photovoltaic float 1 can be adjusted, so that the overall weight distribution of the marine photovoltaic float 1 is balanced, making it more stable and reliable during use.

[0076] like Figure 2 As shown, the floating plate 2 includes a base 21 and a baffle 22 located on the base. A substrate for mounting a glass photovoltaic module is supported on the inner side of the base 21. The baffle 22 surrounds the substrate, providing lateral restraint for the substrate. The glass photovoltaic module and the substrate can be an integral structure, or a slot can be provided on the substrate, allowing the glass photovoltaic module to be quickly fixed onto the substrate after basic installation is completed.

[0077] Preferably, a pressure block 23 extending toward the inner side of the float is provided on the baffle 22, and a predetermined gap is left between the pressure block 23 and the base 21 for placing and fixing the substrate. In this application, the substrate and the float 2 form an air chamber that is fastened to the sea surface, so that the gas in the air chamber is sealed by the water surface. Under the combined action of the buoyancy of the marine photovoltaic float and the atmospheric pressure, the marine photovoltaic float adheres to the water surface like a suction cup. When the marine photovoltaic float encounters wind and waves of normal intensity, the buoyancy of the marine photovoltaic float itself and the buoyancy of the air chamber prevent the marine photovoltaic float from sinking into the water. The effect of atmospheric pressure prevents the whole from leaving the water surface, thereby achieving the effect of adhering to the water surface and effectively improving the ability to resist wind and waves.

[0078] More preferably, the sidewalls and top surface of the air chamber are sealed, the sidewalls being floats, and a one-way air inlet valve is installed on the floats, so that outside air can enter the air chamber through the one-way air inlet valve;

[0079] When the waves are large, the marine photovoltaic float sways violently, causing the air chamber to partially detach from the water surface. The gas in the air chamber is gradually ejected and replaced by seawater. Under such conditions, the air chamber gradually becomes completely filled with seawater. Since the area of ​​the marine photovoltaic float 1 in this application is relatively large compared to the gap between two marine photovoltaic floats 1, under the influence of the waves, more and more seawater surges above the marine photovoltaic float 1 during periods of high waves. This seawater cannot flow back through the gap in time, leading to an accumulation of seawater above the marine photovoltaic float 1. When the accumulated seawater exceeds the maximum allowable limit of the redundant buoyancy, the entire submerged marine photovoltaic float is gradually pushed below the sea surface. This application, by setting appropriate redundant buoyancy and gaps for seawater to surge upwards, allows the marine float to essentially complete its sinking operation before the wave height reaches the set wave resistance benchmark, thereby avoiding the threat posed by larger waves at or above the set wave resistance benchmark and achieving self-protection.

[0080] This marine photovoltaic (PV) float possesses redundant buoyancy, meaning that when the PV float is completely submerged below the sea surface and its air chamber is filled with seawater, the buoyancy force acting on the PV float is greater than its own weight. The PV float here includes a substrate and the photovoltaic modules mounted on it. Preferably, the magnitude of this redundant buoyancy determines the speed at which the PV float rises; a large redundant buoyancy results in a fast rising speed and an earlier rising time, while a small redundant buoyancy results in a slow rising speed and a later rising time.

[0081] In a preferred embodiment, the float 2 is formed by plastic blow molding; the multiple floats 2 are integrally formed or separately formed;

[0082] When the multiple floating plates 2 are formed separately, as Figure 2 and Figure 3 As shown, the float 2 has abutment surfaces 24 at both ends. A protruding protrusion 25 is provided on one abutment surface 24, and a recessed groove 26 is provided on the other abutment surface 24. The protrusion 25 and groove 26 provide a positioning reference for splicing the two floats 2. Preferably, both the protrusion and the groove are square. More preferably, one to five protrusions 25 can be provided, and correspondingly, one to five grooves 26 can also be provided to improve the connection strength between the floats.

[0083] Furthermore, a binding groove is provided on the other side of the abutment plane 24 on the float 2, which can further strengthen the connection between the two floats 2 by binding lines embedded in the binding groove.

[0084] In a preferred embodiment, such as Figure 2 and Figure 3As shown, the outer side of the marine photovoltaic float, i.e., the outer surface of the float plate 2, is configured as a first arc surface 27, and a wear-resistant fabric layer is adhered to this first arc surface 27. The wear-resistant fabric is preferably Teflon fabric. In this application, the sides of each floating unit, especially the sides adjacent to other floating units, are configured as arc surfaces and adhered with wear-resistant fabric to improve wear resistance. It should be noted that although adjacent floating units are connected by chains in this application, the distance between them is small, and they frequently come into contact and rub against each other during floating on the sea surface. The arc design can greatly reduce wear. The floating unit in this application can be a marine photovoltaic float 1, a guide plate 31, or a hydrofoil 5.

[0085] In a preferred embodiment, such as Figure 1 , Figure 2 and Figure 6 As shown, an inwardly recessed area 28 is provided on the outer side of the marine photovoltaic float, i.e., the outer surface of the float plate 1. A chain connecting ring is installed in this recessed area 28, allowing adjacent marine photovoltaic floats 1 to be connected and fixed by a chain 6. In this application, because the reserved gap between two connected floating units is small, generally less than 10cm, the operating space is limited and operation is difficult when installing the chain. Therefore, this recessed area 28 is provided to provide operating space for the chain connection. This recessed area 28 also appropriately increases the vertical water flow, ensuring vertical water flow while maintaining a smaller gap between adjacent floating units.

[0086] Multiple marine photovoltaic floats 1 are interconnected and arranged into a photovoltaic array of a predetermined shape, with a floating channel 3 arranged around the photovoltaic array, such as... Figure 6 As shown in the diagram; one or more floating channels 3 are optionally arranged inside the photovoltaic array; cables are carried through the floating channels 3.

[0087] Hydrofoils 5 are also installed on the outermost side of the photovoltaic array; such as Figure 7 As shown, the hydrofoil 5 has an airfoil-shaped cross-section. The longitudinal section of the hydrofoil 5 has a larger curvature at one end and a smaller curvature at the other end. The end with the larger curvature is the head, and the end with the smaller curvature is the tail. The head faces the outside of the photovoltaic array, and the tail faces the inside of the marine floating array, adjacent to the guide rail 3. In this application, an arc-shaped hydrofoil arc surface 51 is provided at the tail of the hydrofoil 5 to reduce wear between the hydrofoil 5 and the guide rail plate.

[0088] like Figure 4 and Figure 6 As shown, the floating channel 3 includes a plurality of cable guide plates 31;

[0089] The cable guide plate 31 is a hollow and sealed strip, and its length is equal to or less than the length of the marine photovoltaic float 1.

[0090] Iron chain connecting rings are tied and installed on the wire guide plate 31, so that two adjacent wire guide plates 31 are connected and fixed by iron chain 6, thereby forming the floating channel 3;

[0091] Preferably, the guide plate 31 is also connected to the marine photovoltaic float 1 by a chain. Similar to the marine photovoltaic float, a recessed area is provided on the side of the guide plate 31, and a chain connecting ring is installed in the recessed area to provide operating space for the chain connection.

[0092] Preferably, each side of the wire guide plate 31 is configured as an arc shape to reduce wear and improve service life.

[0093] Preferably, such as Figure 4 As shown, a recessed wire groove 32 is provided on the upper surface of the wire guide plate 31, and a partition 33 is provided in the wire groove 32. The partition 33 divides the wire groove into three areas, in which control lines, positive lines and negative lines are arranged in sequence. By adjusting the specific position of the partition 33, the center of gravity of the wire guide plate 31 after wiring is in the center position. Preferably, a sunshade cover is also provided on the top of the wire groove 32.

[0094] In a preferred embodiment, such as Figure 5 and Figure 6 As shown in the figure, a steel wire rope mesh frame 4 is also arranged on the photovoltaic array;

[0095] The wire rope mesh frame includes multiple steel wire ropes that overlap horizontally and vertically. Two horseshoe buckles 43 are arranged at each position where the horizontal steel wire rope 41 and the vertical steel wire rope 42 overlap, and the horizontal steel wire rope 41 and the vertical steel wire rope 42 are fixed together by the horseshoe buckles 43.

[0096] The mesh size in the wire rope mesh frame 4 is basically equal to the outline size of the marine photovoltaic float 1, or basically equal to the outline size of the guide plate 31;

[0097] Preferably, the outermost part of the wire rope mesh frame is a reserved connecting ring, which can be quickly and easily fixed with other wire rope mesh frames, thereby realizing the combination and separation of multiple photovoltaic arrays, and can connect a predetermined number of marine photovoltaic floats 1 and floating channels according to power generation needs.

[0098] Preferably, such as Figure 5 As shown, a horseshoe buckle 43 includes a U-shaped rod 431, a connecting seat 432, and two nuts 433. The connecting seat 432 has two through holes for the U-shaped rod 431 to pass through. The two horseshoe buckles 43 are used alternately, that is, the two ends of the U-shaped rod 431 pass through the through holes of the two connecting seats 432 respectively and are screwed with the nuts 433. The two horseshoe buckles 43 press the transverse steel wire rope 41 and the longitudinal steel wire rope 42 together to achieve detachable locking and fixing.

[0099] Preferably, such as Figure 6 As shown in the diagram, in the photovoltaic array, any marine photovoltaic float 1 is connected to other marine photovoltaic floats 1 or line guides 31 by iron chains, and any line guide 31 is connected to other line guides 31 or marine photovoltaic floats 1 by iron chains.

[0100] Preferably, each chain includes an odd number of iron rings; a steel wire rope with a steel wire rope mesh frame 4 is simultaneously threaded onto the middle iron ring. The iron ring can be a spring hook to facilitate quick connection with the steel wire rope, embedding the steel wire rope into the iron ring.

[0101] This utility model also provides a method for installing a floating marine photovoltaic float, which includes the following steps:

[0102] Step 1: Apply sealant to the contact surface 24 of the floating plate 2;

[0103] Step 2: Arrange multiple floating plates 2 around the substrate so that the substrate extends into the gap between the pressure block 23 and the base 21; the protrusion 25 on the floating plate 2 is embedded into the groove 26 of another floating plate 2.

[0104] Step 3: Secure the two adjacent floating plates 2 by wrapping them with rope around the outside of the contact surface 24; fill the gap between the sealing block 23 and the base 21 with sealant to form the marine photovoltaic floating body 1;

[0105] Step 4: Attach abrasion-resistant fabric to the outside of the marine photovoltaic float 1;

[0106] Step 5: Use horseshoe buckles 43 to lock and fix the transverse steel wire rope 41 and the longitudinal steel wire rope 42 to form a steel wire rope mesh frame;

[0107] Step 6: Connect multiple marine photovoltaic floats 1 and the guide plate 31 into one unit by means of iron chains, and make the steel wire rope of the steel wire rope mesh frame pass through each iron chain, thereby obtaining a photovoltaic array.

[0108] The present invention has been described above with reference to preferred embodiments; however, these embodiments are merely exemplary and serve only an illustrative purpose. Based on this, various substitutions and improvements can be made to the present invention, all of which fall within the protection scope of the present invention.

Claims

1. A sink-float ocean photovoltaic buoy, characterized in that, The marine photovoltaic floating body (1) comprises a plurality of floating plates (2) connected end to end to form a closed ring; An independently sealed water-tight cabin is arranged inside the floating plate (2); The floating plate (2) comprises a base (21) and a retaining table (22) on the base, and a base plate for mounting a glass photovoltaic assembly is supported above the inner side of the base (21); the retaining table (22) surrounds the base plate to provide lateral limiting for the base plate.

2. The sunken and floating marine photovoltaic floating body according to claim 1, wherein A pressing block (23) extending towards the inner side of the floating body is arranged on the retaining table (22), and a predetermined gap is left between the pressing block (23) and the base (21) to place and fix the base plate.

3. The sunken and floating marine photovoltaic floating body according to claim 1, wherein The floating plate (2) is blow molded from plastic; the plurality of floating plates (2) are integrally formed or separately formed; When the plurality of floating plates (2) are separately formed, abutting planes (24) are arranged at both ends of the floating plate (2), an outwardly convex protrusion (25) is arranged on the abutting plane (24) at one end, and an inwardly concave groove (26) is arranged on the abutting plane (24) at the other end; the protrusion (25) and the groove (26) provide a positioning reference for splicing two floating plates (2).

4. The sunken and floating marine photovoltaic floating body according to claim 1, wherein The outer side of the marine photovoltaic floating body, i.e. the outer side of the floating plate (2), is provided as a first arc surface (27), and a wear-resistant cloth layer is attached on the first arc surface (27).

5. The sunken and floating marine photovoltaic floating body according to claim 1, wherein An inwardly recessed recessed area (28) is formed on the outer side of the marine photovoltaic floating body, i.e. the outer side of the floating plate (2), and a chain connecting ring is arranged in the recessed area (28) to connect and fix adjacent two marine photovoltaic floating bodies (1) through chains; A plurality of marine photovoltaic floating bodies (1) are connected to each other to form a photovoltaic array with a predetermined shape, and a floating channel (3) is arranged around the photovoltaic array; one or more floating channels (3) are optionally arranged inside the photovoltaic array; and cables are carried by the floating channels (3).

6. The sunken and floating marine photovoltaic floating body according to claim 5, wherein The floating channel (3) comprises a plurality of wire passing plates (31); The wire passing plate (31) is a hollow and sealed long strip with a length equal to or less than the length of the marine photovoltaic floating body (1); A chain connecting ring is tied and mounted on the wire passing plate (31) to connect and fix adjacent two wire passing plates (31) through chains, thereby forming a floating channel (3); The wire passing plate (31) is also connected through chains with the marine photovoltaic floating body (1).

7. The sunken and floating marine photovoltaic floating body according to claim 6, wherein The upper surface of the wire passing plate (31) is provided with a concave wire slot (32), and a partition plate (33) is arranged in the wire slot (32), which separates the wire slot into three areas, and the control line, the positive electrode line and the negative electrode line are arranged in the three areas in sequence, and the center of gravity of the wire passing plate (31) after wiring is adjusted to the center position by adjusting the specific position of the partition plate (33); A sunshade cover is further arranged on the top of the wire slot (32).

8. The sinkable and floatable marine photovoltaic floating body according to claim 5, characterized in that, A steel wire rope net frame (4) is further arranged on the photovoltaic array; The steel wire rope net frame comprises a plurality of steel wire ropes intersecting horizontally and vertically, two horseshoe buckles (43) are arranged at the position where each horizontal steel wire rope (41) and the vertical steel wire rope (42) intersect, and the horizontal steel wire rope (41) and the vertical steel wire rope (42) are integrated by the horseshoe buckles (43). The size of the grid in the steel wire rope net frame (4) is substantially equal to the contour size of the marine photovoltaic floating body (1), or substantially equal to the contour size of the wire passing plate (31).

9. The sinkable and floatable marine photovoltaic floating body according to claim 8, characterized in that, In the photovoltaic array, any marine photovoltaic floating body (1) is connected to other marine photovoltaic floating bodies (1) or wire passing plates (31) by iron chains, and any wire passing plate (31) is connected to other wire passing plates (31) or marine photovoltaic floating bodies (1) by iron chains.

10. The sinkable and floatable marine photovoltaic floating body according to claim 9, characterized in that, Each iron chain comprises an odd number of iron rings, and the steel wire rope of the steel wire rope net frame (4) is also arranged on the middle iron ring.

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