Connecting component and offshore photovoltaic power generation system

Abstract

The invention discloses a connecting component and an offshore photovoltaic power generation system. The connecting component comprises a movement mechanism and connecting mechanisms arranged on the two sides of the movement mechanism correspondingly. The movement mechanism comprises a fixed seat, a ball head and a connecting rod; two first ball cavities are symmetrically formed in the fixing base, the ball heads are hinged to the interiors of the first ball cavities, and the ball heads have rotational freedom degrees in the first direction and the second direction; one end of the connecting rod is fixed on one side of the ball head exposed out of the first ball cavity; a groove extending in the third direction is formed in one side of the connecting mechanism; the other end of the connecting rod extends into the groove, and the connecting rod can do reciprocating motion in the groove; the other side of the connecting mechanism is used for connecting the floating type photovoltaic power generation unit; the first direction, the second direction and the third direction are perpendicular to each other. According to the scheme, loads can be effectively dispersed in a complex marine environment, excessive displacement between the power generation units is limited, the impact resistance and fatigue resistance are high, the maintenance cost is low, and application and popularization are easy.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a connecting component and an offshore photovoltaic power generation system. Background Art

[0002] Offshore photovoltaic power generation is a power generation technology that converts solar energy into electricity by constructing photovoltaic power stations in ocean waters. Based on the construction method, offshore photovoltaic power stations are mainly divided into fixed and floating types. The fixed type uses piling and caissons to fix the photovoltaic brackets to the seabed. This relatively stable structure is only suitable for shallow waters. The floating type, on the other hand, installs photovoltaics on specially designed floats to form floating photovoltaic power generation units (also known as floating modules). These floating photovoltaic power generation units are fixed together by connectors, making them suitable for deep waters. This method offers advantages such as flexible installation and minimal impact on the marine ecosystem. It will be the main construction method for offshore photovoltaic power generation in the future.

[0003] However, due to the complex and ever-changing marine environment, floating offshore photovoltaic power plants must withstand multiple high-frequency dynamic loads, including waves, tides, and wind. If connectors become loose or break, the floating photovoltaic power generation unit can become unstable, potentially causing collisions and even fires, resulting in serious safety incidents and economic losses. Summary of the Invention

[0004] The present invention provides a connecting component and an offshore photovoltaic power generation system, which can effectively disperse the load and limit excessive displacement between power generation units in a complex marine environment. It not only has strong impact resistance and fatigue resistance, but also has low maintenance costs and is easy to promote and apply.

[0005] According to one aspect of the present invention, a connecting member is provided, comprising: a motion mechanism, and connecting mechanisms respectively arranged on both sides of the motion mechanism; the motion mechanism comprises a fixing seat, a ball head and a connecting rod; two first ball cavities are symmetrically arranged on the fixing seat, the ball head is hingedly arranged in the first ball cavity, and the ball head has rotational freedom in a first direction and a second direction; one end of the connecting rod is fixed to a side of the ball head exposed from the first ball cavity; one side of the connecting mechanism has a groove extending along a third direction; the other end of the connecting rod extends into the groove, and the connecting rod can reciprocate in the groove; the other side of the connecting mechanism is used to connect a floating photovoltaic power generation unit; wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0006] Optionally, the other end of the connecting rod is fixed to the bottom of the groove, and the connecting rod is a telescopic connecting rod; or, an elastic component is provided in the groove, and the other end of the connecting rod is connected to the elastic component.

[0007] Optionally, when an elastic component is provided in the groove and the number of the elastic components is one, one end of the elastic component is fixed in the groove and the other end of the elastic component is connected to the other end of the connecting rod; when an elastic component is provided in the groove and the number of the elastic components is two, a limit block is provided on the connecting rod, and the two elastic components are respectively provided on both sides of the limit block.

[0008] Optionally, a buffer layer is provided on one side surface of the connecting mechanism having the groove; the buffer layer is used to absorb the impact force generated when the connecting mechanism collides.

[0009] Optionally, the inner wall of the first ball cavity has a plurality of protrusions; the protrusions are used to reduce the contact area between the ball head and the inner wall of the first ball cavity, so as to reduce the friction between the ball head and the first ball cavity.

[0010] Optionally, multiple second ball cavities are provided on the inner wall of the first ball cavity, a ball is provided in each second ball cavity, and the ball can rotate with multiple degrees of freedom in the second ball cavity; the ball is used to reduce the contact area between the ball head and the inner wall of the first ball cavity, so as to reduce the friction between the ball head and the first ball cavity.

[0011] Optionally, the connecting member further includes: a flexible protective mechanism; the flexible protective mechanism is wrapped around the outside of the moving mechanism and the connecting mechanism to protect the moving mechanism and the connecting mechanism.

[0012] Optionally, the size of the connecting member is related to a pitch angle threshold of the floating photovoltaic power generation unit.

[0013] Optionally, the pitch angle threshold is determined based on the following parameters: relevant parameters of the floating photovoltaic power generation unit and environmental parameters of the working sea area where the floating photovoltaic power generation unit is located; wherein the relevant parameters of the floating photovoltaic power generation unit include at least mass, moment of inertia and natural frequency, and the environmental parameters of the working sea area include at least water depth, significant wave height, wave frequency and wind speed.

[0014] According to another aspect of the present invention, an offshore photovoltaic power generation system is provided, comprising a floating photovoltaic power generation unit and a connecting member according to any embodiment of the present invention; wherein a plurality of floating photovoltaic power generation units are arranged in an array, and any two adjacent floating photovoltaic power generation units are connected via a connecting member.

[0015] The technical solution of an embodiment of the present invention is to design a connecting member so that the connecting member includes a motion mechanism and connecting mechanisms respectively arranged on both sides of the motion mechanism. The connecting mechanisms connect floating photovoltaic power generation units, thereby enabling the assembly of floating photovoltaic power generation units and limiting excessive displacement between power generation units, providing a foundation for the construction of a photovoltaic power station. Furthermore, the motion mechanism includes a fixed seat, a ball head, and a connecting rod. The ball head is hingedly arranged in a first spherical cavity of the fixed seat and has rotational freedom in a first direction and a second direction. One end of the connecting rod is fixed to the side of the ball head that is exposed from the first spherical cavity, and the other end of the connecting rod extends into a groove of the connecting mechanism, and the connecting rod can reciprocate within the groove. Because the first direction, the second direction, and the third direction are mutually perpendicular, the connecting member can move in three dimensions, thereby effectively distributing loads in complex marine environments and having strong impact resistance and fatigue resistance. In addition, the connecting member has a simple structure, is easy to manufacture, has low maintenance costs, and is easy to promote and apply.

[0016] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of a connecting component provided by an embodiment of the present invention;

[0019] Figure 2 is a schematic cross-sectional structural diagram of a connecting member provided by an embodiment of the present invention;

[0020] Figure 3 yes Figure 2 A local enlarged view of the area shown in the dotted box;

[0021] Figure 4 yes Figure 2 Another partial enlarged view of the area indicated by the dotted box;

[0022] Figure 5 is a schematic diagram of the overall structure of another connecting member provided by an embodiment of the present invention;

[0023] Figure 6 This is a comparison diagram of the stress forms of a connecting member provided by an embodiment of the present invention;

[0024] Figure 7 It is a schematic diagram of the dimensions of a connecting component provided by an embodiment of the present invention.

[0025] Reference numerals:

[0026] 10-moving mechanism; 11-fixed seat; 12-ball head; 13-connecting rod; A-protrusion; B-ball; 20-connecting mechanism; 21-elastic component; 22-buffer layer; 30-flexible protective mechanism. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first", "second", "third", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products or devices.

[0029] Figure 1 This is a schematic diagram of the overall structure of a connecting member provided by an embodiment of the present invention. Figure 1 As shown, the connecting member includes: a motion mechanism 10, and connecting mechanisms 20 respectively arranged on both sides of the motion mechanism 10. That is, the number of connecting mechanisms 20 included in one connecting member is two.

[0030] Figure 2 FIG is a schematic cross-sectional view of a connecting member provided by an embodiment of the present invention. Figure 2 As shown, the motion mechanism 10 includes a fixing seat 11 , a ball head 12 and a connecting rod 13 , and the motion mechanism 10 and the connecting mechanism 20 are connected via the connecting rod 13 .

[0031] Two first spherical cavities are symmetrically arranged on the fixing seat 11, and the ball head 12 is hingedly arranged in the first spherical cavity. That is, the function of the fixing seat 11 is to accommodate the ball head 12 and provide support for its movement, thereby ensuring the smooth movement of the ball head 12. The ball head 12 has rotational freedom in the first direction and the second direction, and can provide flexible connection and movement capabilities. The shape of the first spherical cavity can be the same as the shape of the ball head 12, such as both are spherical. The size of the first spherical cavity is slightly larger than the size of the ball head 12, as long as it is ensured that the ball head 12 can move in the first spherical cavity and does not fall out. Optionally, the shape of the fixing seat 11 can be a sphere, a spherical-like body, a cube, etc., as long as it can meet the above functions, and the embodiment of the present invention does not impose specific restrictions on this.

[0032] The side of the connecting structure 20 close to the motion mechanism 10 has a groove extending along the third direction, and the other side of the connecting structure 20 away from the motion mechanism 10 is used to connect the floating photovoltaic power generation unit ( Figure 2 (not shown) This achieves the assembly and connection of the floating photovoltaic power generation unit and also enables force transmission. One end of the connecting rod 13 is fixed to the side of the ball head 12 that is exposed from the first spherical cavity. The other end of the connecting rod 13 extends into the groove, allowing the connecting rod 13 to reciprocate within the groove. This connecting rod 13 enables force transmission and motion coordination between the connecting mechanism 20 and the motion mechanism 10.

[0033] Since the ball head 12 has rotational freedom in the first and second directions, the connecting rod 13 can move along the third direction, and the first, second and third directions are perpendicular to each other. For example, the first direction can be Figure 2 The up and down directions in the second direction can be Figure 2 The direction perpendicular to the paper surface, the third direction can be Figure 2 For example, the first, second, and third directions may be the X-axis, Y-axis, and Z-axis directions in a rectangular coordinate system, respectively. In this way, the connecting member can move in three dimensions (i.e., has six degrees of freedom), effectively distributing loads in complex marine environments and providing strong impact and fatigue resistance.

[0034] In a possible implementation, the other end of the connecting rod 13 is fixed to the bottom of the groove, and the connecting rod 13 is a telescopic connecting rod. The reciprocating motion of the connecting rod 13 in the groove is achieved through the telescopic nature of the connecting rod 13 itself.

[0035] In another possible implementation, an elastic component is provided in the groove, and the other end of the connecting rod 13 is connected to the elastic component. The reciprocating motion of the connecting rod 13 in the groove is achieved by the elasticity of the elastic component.

[0036] Specifically, the number of elastic components can be one or more. When there is only one elastic component, one end of the elastic component is fixed in the groove, and the other end of the elastic component is connected to the other end of the connecting rod 13. When there are more than one elastic component, the elastic component can be divided into two parts, and the two parts of the elastic components are respectively arranged on both sides of the limit block.

[0037] For example, Figure 3 yes Figure 2 A partial enlarged view of the area shown in the dotted box. Figure 3 As shown, the connecting rod 13 has a stop block 131, and there are two elastic components 21, one on each side of the stop block 131. By providing the elastic components 21 on both sides of the stop block 131, not only can the elastic force of the elastic components 21 be utilized to achieve the reciprocating motion of the connecting rod 13 in the groove, but the force applied to the connecting rod 13 can also be made more uniform, which is more reliable than a single elastic component.

[0038] In one embodiment, continue to refer to Figure 2 A buffer layer 22 is provided on one side of the connecting mechanism 20 having the groove; the buffer layer 22 is used to absorb the impact force generated when the connecting mechanism 20 collides, thereby preventing the connecting mechanism 20 from being damaged.

[0039] In one embodiment, in order to ensure the smooth movement of the ball head 12 in the first ball cavity and extend the service life of the connecting component, a lubrication mechanism can also be provided in the first ball cavity to reduce the friction between the ball head 12 and the inner wall of the first ball cavity.

[0040] Specifically, in a possible implementation, as Figure 3 As shown, the inner wall of the first spherical cavity has a plurality of protrusions A ( Figure 3 The protrusion A is used to reduce the contact area between the ball head 12 and the inner wall of the first ball cavity, so as to reduce the friction between the ball head 12 and the first ball cavity.

[0041] The protrusion A and the first spherical cavity can be made by an integrated molding technology, and the number of protrusions A can be multiple. Optionally, the protrusions A can be evenly distributed in the first spherical cavity. This implementation is simple, low-cost, and easy to implement.

[0042] In another possible implementation, Figure 4 yes Figure 2 Another partial enlarged view of the area shown in the dotted box. Figure 4As shown, a plurality of second ball cavities are provided on the inner wall of the first ball cavity, a ball B is provided in one second ball cavity, and the ball B can rotate with multiple degrees of freedom in the second ball cavity; a portion of the ball B is exposed from the second ball cavity, which is used to reduce the contact area between the ball head 12 and the inner wall of the first ball cavity, so as to reduce the friction between the ball head 12 and the first ball cavity.

[0043] The number of balls B can be multiple. Optionally, the balls B can be evenly distributed in the first ball cavity. Figure 3 Compared with the manner of providing the protrusion A on the inner wall of the first ball cavity as shown, the ball B can convert the sliding friction into rolling friction, further reducing the friction between the ball head 12 and the first ball cavity.

[0044] In one embodiment, Figure 5 This is a schematic diagram of the overall structure of another connecting member provided by an embodiment of the present invention. Figure 5 As shown, the connecting member further includes a flexible protection mechanism 30. The flexible protection mechanism 30 is wrapped around the outside of the movement mechanism 10 and the connection mechanism 20 to protect the movement mechanism 10 and the connection mechanism 20.

[0045] The flexible protective mechanism 30 can be made of a rubber material (such as butyl rubber, neoprene, etc.) or a fiber-reinforced material (such as carbon fiber-reinforced material, etc.). The flexible protective mechanism 30 protects the motion mechanism 10 and the connection mechanism 20 from seawater corrosion, adapts to the dynamic movement of the floating photovoltaic power generation unit, extends the life of the connection components, and reduces maintenance costs.

[0046] Figure 6 This is a comparison diagram of the stress forms of a connecting member provided by an embodiment of the present invention. Figure 6 (a) shows the shape of the connecting member when no external force is applied (i.e., in an ideal state); Figure 6 (b) shows the morphology of the connecting member under external force. Figure 6 As shown, when the waves act on the floating photovoltaic power generation unit, the floating photovoltaic power generation unit moves, causing relative rotation between adjacent floating photovoltaic power generation units, and then triggering the movement of the connecting member. Specifically, the movement process can be divided into the following steps: First, since the floating photovoltaic power generation unit is fixedly connected to the connecting mechanism 20, the rotation of the floating photovoltaic power generation unit directly drives the connecting mechanism 20 to rotate; secondly, the rotation of the connecting mechanism 20 further drives the connecting rod 13 to move in the groove (i.e., along the third direction) and provides a restoring force for the connecting rod 13 during the movement; finally, the connecting rod 13 drives the ball head 12 to rotate in the first ball cavity. In this way, a reciprocating motion is achieved in the above order under normal operating sea conditions.

[0047] Of course, under extreme wave conditions, the relative rotation between the floating photovoltaic power generation units intensifies. When the rotation angle reaches a preset threshold, the connecting mechanisms 20 may collide. At this point, the buffer layer 22 comes into play: the elastic deformation of the buffer layer 22 absorbs the impact energy generated by the collision, effectively mitigating direct rigid collision between the connecting mechanisms 20 and protecting the connected components from damage. This ensures the safety and stability of the floating photovoltaic power generation units in extreme sea conditions.

[0048] In one embodiment, the size of the connecting member is related to a pitch angle threshold of the floating photovoltaic power generation unit.

[0049] The pitch angle threshold is determined based on the following parameters: relevant parameters of the floating photovoltaic power generation unit and environmental parameters of the working sea area where the floating photovoltaic power generation unit is located; wherein the relevant parameters of the floating photovoltaic power generation unit include at least mass, moment of inertia and natural frequency, and the environmental parameters of the working sea area include at least water depth, significant wave height, wave frequency and wind speed.

[0050] Figure 7 This is a schematic diagram of the dimensions of a connecting member provided by an embodiment of the present invention. Figure 7 As shown, when the connecting components are not subject to external forces (i.e., in an ideal state):

[0051] Top angle of the connecting mechanism

[0052] Length of connecting rod exposed in groove

[0053] Maximum rotation angle of the ball head in the first direction / second direction

[0054] Where α is the pitch angle threshold, e is the center-to-center distance between the ball head and the mounting base, and R1 is the inner radius of the connection mechanism. Typically, the empirical value for the pitch angle threshold is 30 < α < 60.

[0055] Furthermore, in order to prevent the ball head from falling out of the first ball cavity, the following conditions must be met:

[0056]

[0057] e≤R 2- r2;

[0058] R1≥L+R2;

[0059] Wherein, t is the gap between the ball head and the first spherical cavity, r1 is the radius of the ball head, r2 is the radius of the first spherical cavity, and R2 is the radius of the fixed seat.

[0060] Since the size of the connecting member is related to the pitch angle threshold of the floating photovoltaic power generation unit, and the pitch angle threshold is determined according to the relevant parameters of the floating photovoltaic power generation unit and the environmental parameters of the working sea area where the floating photovoltaic power generation unit is located, the size of the connecting member has a wide adaptability and can be customized according to the working sea area environment where the floating photovoltaic power generation unit is located.

[0061] In one embodiment, the present invention also provides an assembly process for a connecting member: the fixing seat can be designed as a split type, consisting of two parts, front and rear. After the ball head is embedded in the first ball cavity, the front and rear parts of the fixing seat are fastened together by high-strength bolts to ensure that the ball head can achieve flexible rotation with multiple degrees of freedom in the first ball cavity while avoiding excessive displacement. Secondly, since the connecting rod and the ball head adopt an integrated casting process to ensure structural strength and movement consistency, after the ball head is assembled, the end of the connecting rod is pre-assembled with the elastic component and the entire component is embedded in the groove of the connecting mechanism through a sliding guide groove. The elastic component can provide buffering and limit the displacement amplitude when the floating photovoltaic power generation unit moves through a pre-stressing design. Finally, the connecting mechanism is reliably anchored to the floating photovoltaic power generation unit.

[0062] The technical solution of an embodiment of the present invention is to design a connecting member so that the connecting member includes a motion mechanism and connecting mechanisms respectively arranged on both sides of the motion mechanism. The connecting mechanisms connect floating photovoltaic power generation units, thereby enabling the assembly of floating photovoltaic power generation units and limiting excessive displacement between power generation units, providing a foundation for the construction of a photovoltaic power station. Furthermore, the motion mechanism includes a fixed seat, a ball head, and a connecting rod. The ball head is hingedly arranged in a first spherical cavity of the fixed seat and has rotational freedom in a first direction and a second direction. One end of the connecting rod is fixed to the side of the ball head that is exposed from the first spherical cavity, and the other end of the connecting rod extends into a groove of the connecting mechanism, and the connecting rod can reciprocate within the groove. Because the first direction, the second direction, and the third direction are mutually perpendicular, the connecting member can move in three dimensions, thereby effectively distributing loads in complex marine environments and having strong impact resistance and fatigue resistance. In addition, the connecting member has a simple structure, is easy to manufacture, has low maintenance costs, and is easy to promote and apply.

[0063] An embodiment of the present invention also provides an offshore photovoltaic power generation system, comprising a floating photovoltaic power generation unit and a connecting member described in any of the above embodiments; wherein, multiple floating photovoltaic power generation units are arranged in an array, and any two adjacent floating photovoltaic power generation units are connected by a connecting member.

[0064] In this way, any two adjacent floating photovoltaic power generation units can form a flexible photovoltaic system through the dynamic coordination of connecting components, so that the offshore photovoltaic power generation system can not only adapt to the relative movement between modules caused by waves, but also effectively transfer loads and ensure the stability of the overall structure.

[0065] In addition, the connecting component also facilitates the replacement and addition of floating photovoltaic power generation units in the offshore photovoltaic power generation system, and has the advantages of low maintenance cost and high efficiency.

[0066] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0067] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A connecting member, characterized in that: include: A motion mechanism, and connecting mechanisms respectively arranged on both sides of the motion mechanism; The motion mechanism includes a fixed seat, a ball head and a connecting rod; the fixed seat is symmetrically provided with two first ball cavities, the ball head is hingedly arranged in the first ball cavity, and the ball head has rotational freedom in a first direction and a second direction; one end of the connecting rod is fixed to the side of the ball head that is exposed from the first ball cavity; One side of the connecting mechanism has a groove extending along the third direction; the other end of the connecting rod extends into the groove, and the connecting rod can reciprocate in the groove; the other side of the connecting mechanism is used to connect to the floating photovoltaic power generation unit; The first direction, the second direction, and the third direction are perpendicular to each other.

2. The connecting member according to claim 1, wherein The other end of the connecting rod is fixed to the bottom of the groove, and the connecting rod is a telescopic connecting rod; or, An elastic component is arranged in the groove, and the other end of the connecting rod is connected to the elastic component.

3. The connecting member according to claim 2, wherein: When an elastic component is provided in the groove and the number of the elastic component is one, one end of the elastic component is fixed in the groove, and the other end of the elastic component is connected to the other end of the connecting rod; When an elastic component is provided in the groove and the number of the elastic components is two, the connecting rod is provided with a limit block, and the two elastic components are respectively provided on both sides of the limit block.

4. The connecting member according to claim 1, wherein A buffer layer is provided on one side of the connecting mechanism having the groove; The buffer layer is used to absorb the impact force generated when the connecting mechanism collides.

5. The connecting member according to claim 1, wherein The inner wall of the first spherical cavity is provided with a plurality of protrusions; The protrusion is used to reduce the contact area between the ball head and the inner wall of the first ball cavity, so as to reduce the friction between the ball head and the first ball cavity.

6. The connecting member according to claim 1, wherein A plurality of second spherical cavities are provided on the inner wall of the first spherical cavity, a ball is provided in each of the second spherical cavities, and the ball can rotate with multiple degrees of freedom in the second spherical cavity; The ball is used to reduce the contact area between the ball head and the inner wall of the first ball cavity, so as to reduce the friction between the ball head and the first ball cavity.

7. The connecting member according to claim 1, wherein The connecting member further comprises: a flexible protection mechanism; The flexible protection mechanism is wrapped around the outside of the movement mechanism and the connection mechanism to protect the movement mechanism and the connection mechanism.

8. The connecting member according to any one of claims 1 to 7, characterized in that: The size of the connecting member is related to the pitch angle threshold of the floating photovoltaic power generation unit.

9. The connecting member according to claim 8, characterized in that The pitch angle threshold is determined according to the following parameters: relevant parameters of the floating photovoltaic power generation unit and environmental parameters of the working sea area where the floating photovoltaic power generation unit is located; The relevant parameters of the floating photovoltaic power generation unit include at least mass, moment of inertia and natural frequency, and the environmental parameters of the working sea area include at least water depth, significant wave height, wave frequency and wind speed.

10. An offshore photovoltaic power generation system, characterized in that: It comprises a floating photovoltaic power generation unit and a connecting member according to any one of claims 1 to 9; wherein, The plurality of floating photovoltaic power generation units are arranged in an array, and any two adjacent floating photovoltaic power generation units are connected via the connecting member.

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