Modularized movable energy storage and power supply platform for ocean offshore power utilization facilities and use method of modularized movable energy storage and power supply platform

Abstract

The invention belongs to the field of ocean engineering, and discloses a modularized movable energy storage power supply platform for ocean offshore power utilization facilities and a use method of the modularized movable energy storage power supply platform. Comprising a modularized energy storage floating body, a flow guide module, a spherical hinge connector, a mechanical arm, a connecting rod and a tugboat. Clean energy obtained from an offshore wind driven generator and a photovoltaic platform is used for charging and is towed to an offshore facility through a tugboat for power supply. The platform adopts a modular design, connection and disassembly of modules are realized through a combined design of a spherical hinge connector and a mechanical arm, floating bodies are flexibly increased and decreased according to power demands of different facilities, and efficient energy storage and stable power supply are realized. The modular design enables the platform to have flexibility and expandability, and can meet the power supply requirements of ocean offshore facilities of various scales and types. The platform not only reduces the high cost of submarine cable laying, but also improves the environmental protection property of power supply, reduces the dependence on traditional energy such as diesel power generation, and promotes the application and sustainable development of clean energy.

Description

Technical Field

[0001] The present invention relates to the field of marine engineering, and in particular to a modular movable energy storage and power supply platform for offshore marine power facilities and a method of using the platform. Background Art

[0002] With the continuous deepening of marine development, various types of offshore power facilities (such as marine aquaculture platforms, offshore monitoring stations, submarine data centers, etc.) have been widely built, and energy demand has increased.

[0003] Traditional shore-based power supply solutions mainly rely on submarine cables to transmit electricity from land to offshore facilities. However, the laying and maintenance costs of submarine cables are extremely high, and there is a risk of damage in harsh sea conditions, especially in extreme weather conditions such as typhoons, where cables may face problems such as breakage or wear. In addition, the transmission distance of submarine cables is limited. When offshore facilities are far away from the shore, the loss of the power supply system increases and the energy utilization efficiency decreases. Therefore, the traditional shore-based power supply solution has great limitations and it is difficult to meet the long-distance, large-scale power supply needs of offshore power facilities.

[0004] In recent years, with the rapid development of new energy sources such as offshore wind power, solar energy and wave power, the energy supply methods of offshore power facilities have been expanded. In particular, offshore wind farms have become an important way to provide clean energy for these offshore facilities. Through renewable energy, we can reduce dependence on fossil fuels, reduce carbon emissions and achieve sustainable development. However, offshore power facilities are widely distributed, and the fixed power transmission method of a single offshore wind farm or other new energy power station is difficult to flexibly respond to diverse energy needs.

[0005] To address this problem, one of the traditional solutions is energy storage ships, which store electrical energy in ships at sea and then dispatch and transport it according to demand. Although energy storage ships can alleviate the problem of long-distance transmission of electrical energy to a certain extent, they still have many shortcomings in practical applications. First of all, the design of energy storage ships is usually fixed capacity and poor scalability. When the energy storage capacity needs to be increased, new energy storage ships need to be built, which limits the flexibility of the system. Secondly, the construction and maintenance costs of energy storage ships are high, especially in deep sea areas. The complex hull and propulsion system design significantly increases its construction and operating costs. In addition, since energy storage ships integrate energy storage equipment with the hull, once key components fail, maintenance is difficult and the cycle is long, affecting the operation of the entire system.

[0006] Therefore, there is an urgent need for a flexible, mobile, scalable and cost-effective energy storage and power supply solution to better serve the energy needs of various offshore power facilities. Summary of the invention

[0007] The present invention provides a modularized mobile energy storage power supply platform for offshore power facilities and a method of using the platform. The platform can be charged by renewable energy such as offshore wind power and solar energy, and can be moved to various offshore power facilities by towing to provide reliable power supply. The platform has a modular design, flexible scalability, convenient maintainability and efficient energy management capabilities, and is suitable for the diversified power supply needs of offshore facilities such as marine aquaculture platforms, offshore monitoring stations, offshore exploration and development platforms, and offshore cultural tourism platforms.

[0008] The technical solution of the present invention is as follows: a modular movable energy storage power supply platform for offshore power facilities, comprising a modular energy storage float 1, a ball joint connector 3, a mechanical arm 4, a connecting rod 5 and a tugboat 6;

[0009] The modular energy storage buoys 1 are provided in plurality, and are sequentially arranged and connected to form a chain structure through ball joint connectors 3, mechanical arms 4 and connecting rods 5; the increase or decrease of the offshore modular energy storage buoys 1 is achieved through the cooperation between the mechanical arms 4, connecting rods 5 and ball joint connectors 3; the modular energy storage buoys 1 are connected end to end to form a linear array; the tugboat 6 is connected to the first modular energy storage buoy 1 of the linear array, or is connected to the first modular energy storage buoy 1 of the linear array through the diversion module 2; the wave-facing area of ​​the linear array does not change with the increase or decrease in the number of modular energy storage buoys 1, and remains constant. In the case of different numbers of modular energy storage buoys 1, the tugboat 6 uses the same traction force to complete the towing task; the modular movable energy storage power supply platform is positioned through a single-point mooring system after arriving at the target sea area.

[0010] The tugboat 6 is connected to the fairlead 9 of the diversion module 2 through a tow cable 7; the diversion module 2 is a triangular module; the tow cable 7 is connected to the fairlead 9 through a triangular eye plate 8; the fairlead 9 is arranged on the structural edge of each modular energy storage buoy 1 and the diversion module 2; when the modular movable energy storage power supply platform facing the offshore power facilities of the ocean is stopped and positioned, the rear modular energy storage buoy 1 of the linear array is connected to the auxiliary ship 10 to assist in adjusting the stability and position of the linear array; when the modular movable energy storage power supply platform facing the offshore power facilities of the ocean is towed in reverse, the auxiliary ship 10 is used as a tugboat.

[0011] A mechanical arm 4 and a connecting rod 5 are installed on the structural side edge of each modular energy storage floating body 1; the ball joint connector 3 includes a convex ball joint 19, a concave ball joint 20 and a hydraulic telescopic rod 21; the opening diameter of the concave ball joint 20 is larger than the diameter of the convex ball joint 19; the inner wall of the concave ball joint 20 is covered with a flexible cushion layer for buffering the collision when the convex ball joint 19 is inserted; a plurality of hydraulic telescopic rods 21 are evenly arranged on the inner wall of the concave ball joint 20, and a flexible cushion layer is attached to the end of the hydraulic telescopic rod 21; when multiple modular energy storage floating bodies 1 are connected in a dock When connecting, fix the position of one modular energy storage floating body 1, adjust the relative position of another modular energy storage floating body 1, so that the module to be connected is close to the target module; the mechanical arm 4 of one modular energy storage floating body 1 extends and grabs the connecting rod 5 of the adjacent modular energy storage floating body 1; the mechanical arm 4 is equipped with multiple joints 22, which can move flexibly, and the end of the mechanical arm 4 is a clamp 23; the clamp 23 is equipped with an electromagnetic adsorption device; when the clamp 23 approaches the connecting rod 5, it relies on electromagnetic force to adsorb and grab the connecting rod 5; under the control of the mechanical arm 4, the adjacent modular energy storage floating body 1 is connected. The modular energy storage floating body 1 gradually approaches to ensure that the male ball joint 19 of the ball joint connector 3 is inserted into the female ball joint 20; when the male ball joint 19 and the female ball joint 20 are fully docked, the hydraulic telescopic rod 21 system is triggered; the hydraulic telescopic rod 21 is synchronously extended, and the flexible cushion layer fits the surface of the male ball joint 19 to complete the mechanical locking; after the ball joint connector 3 is connected, the flexible cushion layer is compressed by adjusting the length of the hydraulic telescopic rod 21 to increase the friction force, so as to achieve flexible adjustment or complete locking of the rotation damping; the above operations are repeated in sequence to perform modular connection; when the modular energy storage floating body 1 is connected in the operating sea area, the target module is in a single-point mooring positioning state, and the module to be connected is adjusted by the tugboat 6 and the auxiliary ship 10 so that the module to be connected is close to the target module; then the above operation process is repeated to achieve the module connection in the operating sea area; when the adjacent modular energy storage floating bodies 1 are separated, the ball joint connector 3 retracts all the hydraulic telescopic rods 21, releases the locking state, and the male ball joint 19 is separated from the female ball joint 20 to achieve separation, and the separated module is towed by the tugboat 6 to sail to other sea areas.

[0012] The modular energy storage float 1 also includes FRP ribs 16, optical fiber sensors 17 and anti-collision devices 18; the structural material of the modular energy storage float 1 is seawater and sea sand concrete, combined with FRP ribs 16 as reinforcement materials; the FRP ribs 16 are made of glass fiber GFRP or basalt fiber BFRP composite materials; the optical fiber sensor 17 is integrated into the FRP ribs 16 by adhesion, embedding or coating; the anti-collision device 18 is arranged at the bottom of the modular energy storage float 1 and the impact-prone parts, which is used to deal with the adverse sea conditions encountered during towing and the modular energy storage float 1 or the risk of collision between the modular energy storage float 1 and other objects; the anti-collision device 18 is made of corrosion-resistant and highly elastic materials.

[0013] A battery box 11 is arranged on the modular energy storage float 1; the middle space of the battery box 11 is designed as a continuous and adjustable storage area, and the storage area is used to freeze or store fresh items; the battery box 11 is arranged around the modular energy storage float 1 and supplies power to the intermediate freezing preservation and oxygen supply survival equipment.

[0014] The single-point mooring system includes a mooring buoy 24, a rotating joint 25, an anchor chain 26 and an anchor foundation 27; the upper part of the rotating joint 25 structure has a connecting rod 5, and the mechanical arm 4 on the rear modular energy storage float 1 grabs the connecting rod 5 on the rotating joint 25, thereby realizing the mooring positioning of the modular movable energy storage power supply platform facing the offshore power facilities; the rotating joint 25 is embedded in the upper part of the mooring buoy 24, and the two rotate relative to each other. Under the load of the marine environment, the posture is adjusted according to the marine environment to ensure the stability of the platform during charging and power supply; the cable 12 is fixed on the mooring buoy 24, one end of which is connected to the offshore wind turbine 13, the offshore photovoltaic platform 13 or the offshore power facility 15, and the other end is connected to the battery box 11.

[0015] The offshore power facilities 15 are marine aquaculture platforms, offshore monitoring stations, seabed data centers or offshore scientific research platforms.

[0016] A method for using a modular mobile energy storage power supply platform for offshore power facilities, the specific operation process is as follows:

[0017] The modular mobile energy storage power supply platform is towed to the area where the offshore wind turbine 13 or the offshore photovoltaic platform 13 is located by the electric tugboat 6, and the modular mobile energy storage power supply platform is stably positioned by the single-point mooring system; the energy storage box 3 is charged by the wind turbine or the photovoltaic platform; after being fully charged, the modular mobile energy storage power supply platform is towed to the target offshore power facility 15, and is re-positioned by the single-point mooring system, and the stored electricity is transmitted to the target facility by the cable 12;

[0018] When the power is exhausted, the tugboat 6 and the auxiliary ship 10 work together to tow the fully charged modular mobile energy storage power supply platform to the sea area of ​​the offshore power facility 15 and moor it to the same mooring buoy 24. The exhausted modular mobile energy storage power supply platform is then towed to the area where the offshore wind turbine 13 or the offshore photovoltaic platform 14 is located for power replenishment.

[0019] When supplying power, priority is given to supplying power from the outermost modular energy storage floating body 1 in sequence. When the power of the modular energy storage floating body 1 is exhausted, only the modular energy storage floating body 1 is replaced without replacing the entire modular movable energy storage power supply platform, thereby achieving continuous power supply.

[0020] Beneficial effects of the present invention:

[0021] (1) Flexibility and mobility: The modular design of the present invention allows the energy storage platform to flexibly expand or reduce the energy storage unit according to the power demand of different offshore power facilities, meeting energy needs of various scales. In addition, the platform can be moved to different locations by towing, providing flexible power supply for multiple offshore facilities, no longer relying on fixed submarine cables, greatly improving the applicability of the power supply solution.

[0022] (2) Efficient energy utilization: The platform stores electricity from renewable energy sources such as wind turbines and offshore photovoltaic platforms to provide clean and stable electricity for offshore power facilities. This approach reduces dependence on traditional diesel power generation, reduces carbon emissions from marine facilities, and achieves a win-win situation for environmental protection and economic benefits.

[0023] (3) Cost advantage: Compared with traditional shore-based power supply methods, the present invention avoids the high cost of laying and maintaining submarine cables. Compared with traditional single energy storage ships, the present invention reduces construction and operating costs through modular design. Each floating unit can be manufactured and maintained independently, reducing initial investment and long-term maintenance costs. In addition, through the movable platform design, energy infrastructure can be shared between different facilities, reducing long-term operation and maintenance costs.

[0024] (4) Safety and maintenance convenience: The platform adopts a single-point mooring system, which can automatically adjust the platform's orientation according to sea conditions, maintain a stable positioning, and has the characteristics of rapid mooring and unmooring. In addition, due to the modular design of the platform, key components such as energy storage units and power supply modules can be replaced and maintained separately, avoiding the risk of overall shutdown and improving the reliability and maintainability of the system.

[0025] Through these beneficial effects, the present invention can effectively solve many problems in the power supply mode of traditional offshore power facilities, and provide an innovative power supply solution for marine engineering, ecological protection and scientific research. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic top view of the towing process of a modular movable energy storage and power supply platform for offshore power facilities of the present invention.

[0027] Figure 2 It is a schematic front view of the towing process of a modularized movable energy storage power supply platform for offshore power facilities of the present invention, wherein the upper dotted line represents the sea level.

[0028] Figure 3 It is a front view schematic diagram of the stopping process of a modular movable energy storage power supply platform for offshore power facilities of the present invention, wherein the upper dotted line represents the sea level.

[0029] Figure 4 It is a top view schematic diagram of the mooring positioning process of a modular movable energy storage and power supply platform for offshore marine power facilities according to the present invention.

[0030] Figure 5 It is a schematic side view of the energy storage process of an offshore wind farm of a modularized movable energy storage power supply platform for offshore power facilities of the present invention, wherein the upper dotted line represents the sea level, and the lower thick solid line represents the seabed.

[0031] Figure 6 It is a top view schematic diagram of the energy storage process of an offshore photovoltaic platform of a modular movable energy storage and power supply platform for offshore marine power facilities of the present invention.

[0032] Figure 7 It is a top view schematic diagram of the power supply process of a modular movable energy storage power supply platform for offshore power facilities of the present invention.

[0033] Figure 8 It is a top view schematic diagram of module replacement during power supply of offshore power facilities of a modular movable energy storage power supply platform for offshore power facilities of the present invention.

[0034] Fig. 9 This is a schematic diagram of an expansion of an energy storage floating module of a modularized movable energy storage power supply platform for offshore power facilities of the present invention, wherein the expansion module is represented by a dotted line.

[0035] Fig.10 It is a top view cross-sectional schematic diagram of a modular energy storage floating body of a modular movable energy storage power supply platform for offshore power facilities in the present invention.

[0036] Fig.11 It is a schematic diagram of a ball joint connector of a modular movable energy storage and power supply platform for offshore power facilities of the present invention.

[0037] Fig.12 It is a schematic diagram of a mechanical arm of a modular movable energy storage and power supply platform for offshore power facilities of the present invention.

[0038] In the figure: 1-modular energy storage float; 2-flow diversion module; 3-ball joint connector; 4-mechanical arm; 5-connecting rod; 6-electric tugboat; 7-tow cable; 8-triangular eye plate; 9-fairlead; 10-auxiliary ship; 11-battery box; 12-cable; 13-offshore wind turbine; 14-offshore photovoltaic platform; 15-marine offshore power facilities; 16-FRP tendons; 17-optical fiber sensor; 18-anti-collision device; 19-convex ball joint; 20-concave ball joint; 21-hydraulic telescopic rod; 22-joint; 23-clamp; 24-mooring buoy; 25-swivel joint; 26-anchor chain; 27-anchor foundation. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] A modular movable energy storage and power supply platform for offshore power facilities includes: a modular energy storage float 1, a diversion module 2, a ball joint connector 3, a mechanical arm 4, a connecting rod 5, an electric tugboat 6, a towline 7, a triangular eye plate 8, a fairlead 9, an electric auxiliary ship 10, a battery box 11, a cable 12, a wind turbine 13, an offshore photovoltaic platform 14, offshore power facilities 15 and a single-point mooring system.

[0041] The modular energy storage floating body 1 includes: FRP ribs 16 , optical fiber sensors 17 , and an anti-collision device 18 .

[0042] The ball joint connector 3 includes: a convex ball joint 19 , a concave ball joint 20 , and a hydraulic telescopic rod 21 .

[0043] The robot arm 4 includes a joint 22 and a clamp 23 .

[0044] The single point mooring system comprises: a mooring buoy 24 , a swivel joint 25 , an anchor chain 26 , and an anchor foundation 27 .

[0045] The modular energy storage buoy 1 is mainly used to carry a battery box 11, which is connected to an offshore wind turbine 13 and an offshore photovoltaic platform 14 through cables to store the acquired clean energy power and provide continuous energy support for the target offshore facilities. The layout and quantity of the battery box 11 can be adjusted according to the energy storage demand to meet the electricity demand of different scales.

[0046] The modular energy storage float 1 is not limited to the energy storage function, but can also be used for other purposes, such as freezing or storing fresh seafood. Through flexible design, the battery boxes 11 are arranged around the modular energy storage float 1, and the middle space of the float is designed as a continuous and adjustable storage area to meet the two different usage requirements of frozen storage and oxygen supply survival. The battery boxes 11 are arranged around the modular energy storage float 1, which effectively improves the lateral stability and pitch inertia moment of the float, reduces the tilt and sway amplitude of the float under the action of waves, and provides clean energy supply for the power facilities in the intermediate storage area.

[0047] The modular energy storage float 1 uses seawater and sea sand concrete as the main material, combined with FRP bars 16 as reinforcement materials. The FRP bars 16 can be made of glass fiber GFRP or basalt fiber BFRP composite materials, which have high strength, low density and excellent corrosion resistance. The use of FRP bars enhances the structural rigidity of the float and extends its service life. The optical fiber sensor 17 can be integrated into the FRP bars 16 by adhesion, embedding or coating. The optical fiber sensor 17 senses the strain changes of the FRP bars 16, evaluates the stress condition and structural deformation of the float, and promptly detects abnormal stress beyond the design range. The integrated optical fiber sensing system can realize distributed monitoring of the state of the float and provide more comprehensive and accurate structural health information.

[0048] The ball joint connector 3 is used to connect adjacent modular energy storage buoys 1, and multiple modules can be combined into one large module. Each modular energy storage buoy 1 has a joint of the ball joint connector 3, which facilitates the modular expansion of the platform. The ball-joint connector 3 is composed of a convex ball joint 19, a concave ball joint 20, and a hydraulic telescopic rod 21; the opening diameter of the concave ball socket is larger than the diameter of the convex ball, so as to realize the rapid docking of the ball-joint connector in the marine environment; the inner wall of the socket of the concave ball joint 20 is covered with a flexible cushion layer, which is used to buffer the collision when the convex ball joint 19 is inserted and protect the joint surface; a plurality of hydraulic telescopic rods 21 are evenly arranged on the inner wall of the socket of the concave ball joint 20, and the end of the rod is provided with a flexible cushion layer; when the convex ball joint 19 enters the socket of the concave ball joint 20, the rod is extended from multiple directions, and the cushion layer fits the surface of the convex ball joint 19 to realize the locking of the ball-joint connector; in addition, the extension length and pressure of the rod can be adjusted, and the cushion layer can be compressed to increase the friction force, so as to realize the flexible adjustment or complete locking of the rotational damping; when the ball-joint connector is separated, all rods are retracted, the locking state is released, the convex ball joint 19 is disengaged from the concave ball joint 20, and the separation is realized. This innovative ball-joint connector design is very suitable for the rapid connection and separation of offshore floating modules, improving offshore operation efficiency; at the same time, the ball-joint connector allows a certain range of free rotation between modules, which can release the torque and stress caused by waves, tides and wind, avoid overload problems caused by rigid connections, and improve the structural safety of the modules.

[0049] In addition, the bottom of the modular energy storage float 1 is also designed with an anti-collision device 18 to cope with the adverse sea conditions and the risk of collision between modules or between modules and other objects that may be encountered during towing. The anti-collision device 18 is made of corrosion-resistant and highly elastic materials (such as closed-cell foam rubber or polyurethane materials) and covers the bottom and edge of the float that are susceptible to impact. When a collision occurs, the impact energy is absorbed by the deformation of the flexible material, reducing the direct impact force on the module or the float structure.

[0050] An important innovation of the present invention is that the modular energy storage buoy 1 is towed back and forth between the charging area (such as an offshore wind farm) and the target power facility sea area by a tugboat 6, and the modules are arranged and connected by a chain expansion arrangement. The first module uses a diversion module 2, which has a triangular structure. Through its streamlined design, during the towing process, the waves will smoothly bypass the triangular module, thereby reducing the wave impact of the subsequent chain arrangement modules and improving the overall towing efficiency. The modular energy storage buoy 1 is arranged in a chain structure in sequence through a ball joint connector 3 and a mechanical arm 4, and all modules are connected end to end to form a linear array. The chain expansion arrangement makes it possible for the increase in the number of modules to have no significant effect on the traction demand of the tugboat. The tugboat only needs to maintain the linear movement of the towing chain, and there is no need to provide additional traction for additional modules. The traction resistance during towing is mainly determined by the first module, and the remaining modules only bear the downstream resistance of the chain arrangement. The platform can flexibly add energy storage modules according to the needs of the target power facilities through a chain expansion method, thereby adjusting the energy storage capacity of the platform. Since the towing efficiency will not be significantly reduced due to the increase in the number of modules, there is no need to replace the electric tugboat 6 due to platform expansion. The chain arrangement provides technical support for large-scale energy storage applications.

[0051] In actual operation, the tugboat 6 is connected to the front module of the chain arrangement through the towline 7, and the towline is split through the triangular eye plate 8 to keep the towing direction stable. The rear module is connected to the auxiliary ship 10 to assist in adjusting the stability and position of the chain arrangement.

[0052] The present invention proposes an efficient and safe offshore modular energy storage floating body connection and disassembly technology. The combined design of the ball joint connector 3 and the mechanical arm 4 supports the rapid connection and disassembly of the module, so that the platform can quickly adjust the number of modules to adapt to different operation requirements.

[0053] A mechanical arm 4 and a connecting rod 5 are installed on the edge of the side structure of each modular energy storage float 1. At the beginning of the offshore module connection operation, the electric tugboat 6 and the electric auxiliary ship 10 adjust the relative positions of the modules respectively so that the module to be connected is close to the target module. The mechanical arm 4 of one module stretches and grabs the connecting rod 5 of the adjacent module. The mechanical arm 4 is equipped with multiple joints 22, which can achieve flexible movement. The end of the mechanical arm 4 is a clamp 23, and the clamp 23 is equipped with an electromagnetic adsorption device. When the clamp 23 approaches the connecting rod 5, the connecting rod 5 can be adsorbed and grasped by electromagnetic force. Under the control of the mechanical arm, the floating module gradually approaches to ensure that the convex ball joint 19 of the ball joint connector 3 is inserted into the concave ball joint 20. When the convex ball joint 19 and the concave ball joint 20 are fully docked, the hydraulic telescopic rod 21 system is triggered. The hydraulic telescopic rod 21 extends synchronously, and the flexible cushion layer fits the surface of the convex ball to complete the mechanical locking. After the ball joint connector 3 is connected, the friction force is increased by adjusting the length of the hydraulic telescopic rod 21 to compress the cushion layer, so as to achieve flexible adjustment or complete locking of the rotation damping and prevent module collision during towing and operation.

[0054] During the module disassembly process, the electric tugboat 6 and the auxiliary ship 10 respectively tow the modules to be disassembled to keep the relative positions between the modules stable. The hydraulic telescopic rod 21 contracts, the locked state is released, the convex ball joint 19 is disengaged from the concave ball joint 20, and the ball joint connector 3 is separated. After the ball joint connector 3 is separated, the mechanical arm 4 gradually releases the connecting rod 5 and slowly separates the modules to avoid collisions between modules. The disassembled modules are towed to the designated area by the electric tugboat for storage, or reused for other purposes. Through the above technical process, the present invention realizes the safe and rapid assembly and disassembly of modular energy storage floats in a marine environment, and provides solid technical support for the flexible application of modular structures.

[0055] The fairlead 9 is used to guide and fix the tow cable 7 to ensure smooth operation of the tow cable during towing; the fairlead 9 is arranged on the structural edge of each modular energy storage buoy 1, which helps each module to be connected to the electric tugboat 6 or the electric auxiliary ship 10.

[0056] The electric auxiliary vessel 10 is used to assist the electric tugboat 6 in stopping, positioning, connecting, disassembling the platform and accurately connecting the platform with the target facility; when necessary, it can also be used as a tugboat to complete the towing work of the platform.

[0057] The cable 12 is used to connect the energy storage platform with an offshore wind turbine 13, an offshore photovoltaic platform 14 or a target offshore power facility 15 to achieve power input or output.

[0058] The offshore wind turbine 13 and the offshore photovoltaic platform 14 provide renewable energy for the modular energy storage platform.

[0059] The offshore power facilities 15 are facilities that require power supply, including marine aquaculture platforms, offshore monitoring stations, offshore exploration and development platforms, offshore cultural tourism platforms or submarine data centers, etc.

[0060] The single-point mooring system is used for anchoring and positioning the platform during charging or mooring, and has the characteristics of rapid mooring and unmooring, and is very suitable for the modular movable energy storage power supply platform that does not require high motion response.

[0061] The mooring buoy 24 is used for floating support cable 12 and providing a fixing point for the platform, and a connecting rod 5 is arranged on the upper part thereof for the mechanical arm 4 of the modular energy storage float 1 to grab, so as to realize single-point mooring positioning of the platform.

[0062] The rotating joint 25 allows the platform to adjust its direction according to the sea conditions, so that the platform has adaptability to the wave direction.

[0063] The anchor chain 26 is used to connect the mooring buoy 24 and the anchor foundation 27 to ensure the reliability of the mooring.

[0064] The anchor foundation 27 is an infrastructure installed on the seabed and used to fix the mooring buoy 24. It can be a self-priming anchor pile, a caisson or a gravity anchor, which provides sufficient pull-out resistance to ensure the long-term stability of the platform.

[0065] Figure 1 and Figure 2 The schematic diagrams of the towing process of the modular movable energy storage and power supply platform of the present invention are shown in front view and top view. The modular energy storage float 1 is connected to the mechanical arm 4 through a ball joint connector 3 to form an expandable modular platform structure. Each modular energy storage float 1 is equipped with a battery box 11 on the top, which can increase or decrease the number of energy storage modules according to the different power requirements of offshore power facilities. The diversion module 2 is connected to the outside of the modular energy storage float 1 as the first module, which effectively reduces the hydrodynamic resistance during towing. Among them, the ball joint connector 3 has low cost and good long-term structural performance, but it is difficult to connect the modular energy storage float 1 at sea; therefore, combined with the high-precision and automated connection advantages of the mechanical arm 4, the module connection under complex sea conditions is realized, and then the installation of the ball joint connector 3 is completed.

[0066] The electric tugboat 6 is connected to the platform through a tow cable 7, which is divided into two cables through a triangular eye plate 8 and connected to the fairleads 9 on both sides of the platform to ensure the directional stability of the platform during towing. The electric auxiliary boat 10 assists in the operation behind the platform to ensure the precise control of the entire towing process.

[0067] Figure 3The schematic diagram of the modular mobile energy storage power supply platform stopping its navigation is shown in the front view. During the stopping phase, the electric tugboat 6 gradually decelerates, causing the platform to slow down. At the same time, the electric auxiliary ship 10 is connected to the modular energy storage buoy 1 at the rear to perform reverse towing operations. The electric auxiliary ship further controls the deceleration of the platform through reverse traction to ensure that the platform can be parked smoothly and safely in the designated sea area.

[0068] Figure 4 The schematic diagram of the mooring positioning of the modular mobile energy storage power supply platform is shown in a top view. After the platform slows down and stops, the electric auxiliary ship 10 adjusts the position of the rear modular energy storage buoy 1 so that its mechanical arm 4 can accurately grasp the connecting rod 5 on the mooring buoy 24 to achieve the positioning of the platform.

[0069] Figure 5 and Figure 6 The schematic diagrams of the modular mobile energy storage and power supply platform in the energy storage process of offshore wind farms and offshore photovoltaic platforms are shown in side and top views. When the platform is connected to the mooring buoy 24 and single-point mooring positioning is achieved, the electric tugboat 6 and the electric auxiliary ship 10 are unmoored and leave the sea area; the battery box 11 of the platform is connected to the cable 12 fixed on the mooring buoy 24, and clean electricity is obtained from the offshore wind turbine 13 or the offshore photovoltaic platform 14.

[0070] Figure 7 The schematic diagram of the modular mobile energy storage power supply platform supplying power to offshore power facilities is shown. After the platform completes the single-point mooring positioning, the power stored in the battery box 11 is transmitted to the target offshore power facility 15 through the cable 12. When supplying power, it is preferentially supplied from the outer module to facilitate module replacement.

[0071] Figure 8 The schematic diagram of the top view of the module replacement in the process of the modular mobile energy storage power supply platform supplying power to the offshore power facilities is shown. When the platform's power is about to run out, the electric tugboat 6 and the electric auxiliary ship 10 can work together again to tow the new platform with stored energy to the offshore power facilities 15, and complete the single-point mooring positioning based on the same mooring buoy 24, and connect the cable 12 to the new platform to continue to supply power to the offshore power facilities 15. Then, the electric tugboat 6 and the electric auxiliary ship 10 tow the exhausted platform back to a renewable energy power plant such as a wind farm for power storage.

[0072] Fig. 9 The schematic diagram of the module expansion of the modular mobile energy storage power supply platform is shown. According to the power demand of the offshore power facilities 15, the platform can achieve flexible module expansion through the ball joint connector 3 and the mechanical arm 4 to adapt to energy storage needs of different scales.

[0073] Fig.10The schematic diagram of the cross-section of the modular energy storage buoy is shown. The material of the modular energy storage buoy 1 is seawater and sea sand concrete, and FRP ribs 16 and optical fiber sensors 17 are embedded inside, which has good corrosion resistance and enhances the self-sensing property of the structure.

[0074] Fig.11 The schematic diagram of the robot arm is shown. The robot arm 4 is composed of multiple joints 22 and an end clamp 23. The clamp 23 is equipped with an electromagnetic adsorption device, which can flexibly grasp or release the connecting rod 5 to achieve the preliminary connection of adjacent modules.

[0075] Fig.12 The schematic diagram of the ball joint connector is shown. The ball joint connector is composed of a convex ball joint 19, a concave ball joint 20 and a hydraulic telescopic rod 21, the inner wall of the concave ball socket is covered with a flexible cushion layer, the hydraulic telescopic rod 21 is evenly distributed on the inner wall of the concave ball socket, and the end of the rod is provided with a flexible cushion layer.

[0076] The present invention can be widely used in various offshore power facilities such as marine aquaculture platforms, offshore monitoring stations, and submarine data centers. The energy obtained by the wind turbine 13 and the offshore photovoltaic platform 14 is stored in the modular energy storage buoy 1, and when necessary, it is moved to the marine facilities that need power support by the electric tugboat 6, realizing an environmentally friendly, efficient, and flexible power supply solution.

[0077] The present invention is designed to combine the following factors:

[0078] (1) Marine environment adaptability: Since the platform will operate in the marine environment for a long time, the design must fully consider the impact of marine conditions, such as wind, waves, tides, and currents. The platform should have good wind and wave resistance and be able to maintain stable mooring and power supply capabilities under severe weather conditions. It is recommended that the wave height during towing operations does not exceed 2m. At the same time, the platform's materials should have good corrosion resistance to cope with the erosion of seawater and salt spray.

[0079] (2) Adapting to the needs of various offshore power facilities: The present invention needs to be able to adapt to different types of offshore power facilities (such as marine aquaculture platforms, offshore monitoring stations, submarine data centers, etc.). Therefore, the interface design between the cable and the target facility should be universal and able to adjust the output power according to the power requirements of different facilities. The capacity of the energy storage system and the battery management system should be able to flexibly respond to the needs of various application scenarios.

[0080] (3) Efficient utilization and storage of clean energy: The present invention relies on clean energy such as wind turbines and offshore photovoltaic platforms to provide power for the platform. The design should ensure the efficient storage capacity of the energy storage unit to avoid energy loss.

[0081] Designing and implementing a construction and installation process for a modular mobile energy storage power supply platform for offshore power facilities is a detailed and complex process involving multiple key steps. The following is a general method of using the system:

[0082] First, the platform is prefabricated and the modules are assembled in the dock. The modules are connected by ball joint connectors and mechanical arms to ensure the accuracy and stability of the connection parts.

[0083] Afterwards, a single-point mooring system is installed in the sea area of ​​the offshore power plant and offshore power facilities where energy storage and supply are planned, including a mooring buoy, a rotating joint, an anchor chain, an anchor foundation, and a reserved cable is fixed on the mooring buoy.

[0084] Then, the modular mobile energy storage power supply platform is towed to an offshore power plant (such as a wind farm or photovoltaic platform) by an electric tugboat. During transportation, tow cables and triangular eye plates are used to keep the platform stable to ensure smooth sailing. The electric auxiliary ship assists in stopping, accurately positioning, and adjusting the attitude during the towing process to ensure the safe arrival of the platform.

[0085] After arriving at the charging area, the platform is positioned through the single-point mooring system, and the mechanical arm grabs the connecting rod on the top of the mooring buoy. After completing the positioning, the platform is connected to the wind turbine or photovoltaic platform for energy storage charging, and the intelligent management system monitors the charging and discharging status in real time.

[0086] After charging is completed, the platform is towed by an electric tugboat to the target offshore power facility. After arrival, the platform is repositioned through the mooring system and stable power is provided to the facility using cables.

[0087] After completing the power supply task, the platform can be towed back to the charging area and reused for multiple cycles to provide flexible and efficient power support for different facilities.

[0088] During the power supply process, if the module needs to be replaced or maintained, the new module can be towed and moored to the buoy under the coordinated operation of the tugboat and auxiliary ship, and then the module to be replaced can be towed back to ensure simple operation and continuous power supply for offshore power facilities.

[0089] Through the orderly implementation of the above steps, the modular mobile energy storage power supply platform can efficiently complete the entire process from prefabrication to installation, operation and maintenance, ensuring safe, reliable and flexible power supply for offshore power facilities. At the same time, the platform has good scalability and adaptability, and can achieve continuous operation in a variety of marine environments.

Claims

1. A modularized mobile energy storage and power supply platform for offshore power facilities, characterized in that: The modular movable energy storage power supply platform for offshore power facilities comprises a modular energy storage float (1), a ball joint connector (3), a mechanical arm (4), a connecting rod (5) and a tugboat (6); A plurality of modular energy storage buoys (1) are provided, and are sequentially arranged and connected to form a chain structure through ball joint connectors (3), mechanical arms (4) and connecting rods (5); the increase or decrease of the offshore modular energy storage buoys (1) is achieved through the cooperation between the mechanical arms (4), connecting rods (5) and ball joint connectors (3); the modular energy storage buoys (1) are connected end to end to form a linear array; the tugboat (6) is connected to the first modular energy storage buoy (1) of the linear array, or is connected to the first modular energy storage buoy (1) of the linear array through a diversion module (2); the wave front area of ​​the linear array does not change with the increase or decrease in the number of modular energy storage buoys (1), but remains constant; in the case of different numbers of modular energy storage buoys (1), the tugboat (6) uses the same traction force to complete the towing task; the modular movable energy storage power supply platform is positioned through a single point mooring system after arriving at the target sea area.

2. The modularized movable energy storage power supply platform for offshore power facilities according to claim 1 is characterized in that: The tugboat (6) is connected to the fairlead (9) of the diversion module (2) via a tow cable (7); the diversion module (2) is a triangular module; the tow cable (7) is connected to the fairlead (9) via a triangular eye plate (8); the fairlead (9) is arranged on the structural edge of each modular energy storage buoy (1) and the diversion module (2); when the modular movable energy storage power supply platform facing the offshore power facilities is performing a stop or positioning operation, the rear modular energy storage buoy (1) of the linear array is connected to the auxiliary ship (10) to assist in adjusting the stability and position of the linear array; when the modular movable energy storage power supply platform facing the offshore power facilities is towing in reverse, the auxiliary ship (10) is used as a tugboat.

3. The modularized movable energy storage and power supply platform for offshore power facilities according to claim 1 is characterized in that: A mechanical arm (4) and a connecting rod (5) are installed on the structural side edge of each modular energy storage float (1); the ball joint connector (3) comprises a convex ball joint (19), a concave ball joint (20) and a hydraulic telescopic rod (21); the opening diameter of the concave ball joint (20) is larger than the diameter of the convex ball joint (19); the inner wall of the concave ball joint (20) is covered with a flexible cushion layer for buffering the collision when the convex ball joint (19) is inserted; a plurality of hydraulic telescopic rods (21) are evenly arranged on the inner wall of the concave ball joint (20), and the ends of the hydraulic telescopic rods (21) are provided with A flexible cushion layer; when multiple modular energy storage floats (1) are connected at a dock, the position of one modular energy storage float (1) is fixed, and the relative position of another modular energy storage float (1) is adjusted so that the module to be connected is close to the target module; the mechanical arm (4) of one modular energy storage float (1) extends and grabs the connecting rod (5) of the adjacent modular energy storage float (1); the mechanical arm (4) is equipped with multiple joints (22) and can move flexibly, and the end of the mechanical arm (4) is a clamp (23); the clamp (23) is equipped with an electromagnetic adsorption device; When the clamp (23) approaches the connecting rod (5), the connecting rod (5) is grasped by electromagnetic force; under the control of the mechanical arm (4), the adjacent modular energy storage floats (1) gradually approach each other to ensure that the convex ball joint (19) of the ball joint connector (3) is inserted into the concave ball joint (20); when the convex ball joint (19) and the concave ball joint (20) are completely docked, the hydraulic telescopic rod (21) system is triggered; the hydraulic telescopic rod (21) is synchronously extended, and the flexible cushion layer fits the surface of the convex ball joint (19) to complete the mechanical locking; after the ball joint connector (3) is connected, the flexible cushion layer is compressed by adjusting the length of the hydraulic telescopic rod (21) to increase the friction force, so as to achieve flexible adjustment or complete locking of the rotation damping; the above operations are repeated in sequence to perform modular connection; When the modular energy storage buoys (1) are connected in the operating sea area, the target module is in a single-point mooring positioning state, and the module to be connected is adjusted in position by the tugboat (6) and the auxiliary ship (10) so that the module to be connected is close to the target module; then the above operation process is repeated to achieve module connection in the operating sea area; when adjacent modular energy storage buoys (1) are separated, the ball joint connector (3) retracts all hydraulic telescopic rods (21), releases the locking state, and the convex ball joint (19) is separated from the concave ball joint (20) to achieve separation, and the separated module is towed by the tugboat (6) to sail to other sea areas.

4. The modularized movable energy storage and power supply platform for offshore power facilities according to claim 3 is characterized in that: The modular energy storage buoy (1) further comprises FRP ribs (16), optical fiber sensors (17) and anti-collision devices (18); the structural material of the modular energy storage buoy (1) is seawater and sea sand concrete, combined with FRP ribs (16) as reinforcement material; the FRP ribs (16) are made of glass fiber GFRP or basalt fiber BFRP composite materials; the optical fiber sensors (17) are integrated into the FRP ribs (16) by adhesion, embedding or coating; the anti-collision devices (18) are arranged at the bottom of the modular energy storage buoy (1) and at impact-prone locations, and are used to cope with adverse sea conditions encountered during towing and the risk of collision between the modular energy storage buoy (1) or the modular energy storage buoy (1) and other objects; the anti-collision devices (18) are made of corrosion-resistant and highly elastic materials.

5. The modularized movable energy storage and power supply platform for offshore power facilities according to claim 3 or 4, characterized in that: A battery box (11) is arranged on the modular energy storage float (1); the middle space of the battery box (11) is designed as a continuous and adjustable storage area, and the storage area is used to freeze or store fresh items; the battery box (11) is arranged around the modular energy storage float (1) and supplies power to the intermediate freezing preservation and oxygen supply survival equipment.

6. The modularized movable energy storage and power supply platform for offshore power facilities according to claim 5 is characterized in that: The single-point mooring system comprises a mooring buoy (24), a swivel joint (25), an anchor chain (26) and an anchor foundation (27); the upper part of the swivel joint (25) structure has a connecting rod (5), and the mechanical arm (4) on the rear modular energy storage buoy (1) grabs the connecting rod (5) on the swivel joint (25), thereby realizing the mooring positioning of the modular movable energy storage power supply platform facing the offshore power facilities; the swivel joint (25) is embedded in the upper part of the mooring buoy (24), and the two rotate relative to each other. Under the load of the marine environment, the posture is adjusted according to the marine environment to ensure the stability of the platform during charging and power supply; the cable (12) is fixed on the mooring buoy (24), one end of which is connected to the offshore wind turbine (13), the offshore photovoltaic platform (13) or the offshore power facility (15), and the other end is connected to the battery box (11).

7. The modularized movable energy storage and power supply platform for offshore power facilities according to claim 6 is characterized in that: The marine offshore power facility (15) is a marine aquaculture platform, an offshore monitoring station, a seabed data center or an offshore scientific research platform.

8. A method for using the modularized movable energy storage power supply platform for offshore power facilities according to any one of claims 1 to 7, characterized in that: The specific operation process is as follows: The modular mobile energy storage power supply platform is towed by an electric tugboat (6) to the area where an offshore wind turbine (13) or an offshore photovoltaic platform (13) is located, and the modular mobile energy storage power supply platform is stably positioned by a single-point mooring system; the energy storage box (3) is charged by the wind turbine or photovoltaic platform; after being fully charged, the modular mobile energy storage power supply platform is towed to a target offshore power facility (15), and is repositioned by the single-point mooring system, and the stored electricity is transmitted to the target facility by a cable (12); When the power is exhausted, the fully charged modular mobile energy storage power supply platform is towed to the sea area of ​​the offshore power facilities (15) through the coordinated work of the tugboat (6) and the auxiliary ship (10), moored to the same mooring buoy (24), and then the exhausted modular mobile energy storage power supply platform is towed to the area where the offshore wind turbine (13) or the offshore photovoltaic platform (14) is located to replenish the power.

9. The method of use according to claim 8, characterized in that: When supplying power, priority is given to supplying power sequentially from the outermost modular energy storage floating body (1); when the power of the modular energy storage floating body (1) is exhausted, only the modular energy storage floating body (1) is replaced without replacing the entire modular movable energy storage power supply platform, thereby achieving continuous power supply.

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