Underwater charging mobile energy station

Abstract

The invention relates to the technical field of power stations, in particular to an underwater charging mobile energy station. The underwater charging mobile energy station comprises a power generation device, an energy storage device, a heaving device and an active charging device, the active charging device is electrically connected with the energy storage device, and the active charging device comprises charging connection equipment used for being electrically connected with seabed equipment or facilities. The heaving device is used for driving the energy station to perform heaving motion so as to enable the power generation device to generate power by utilizing the sea surface environment when the energy station emerges from the sea surface and charge seabed equipment or facilities by utilizing the active charging device when the energy station sinks underwater, and corresponding charging connection equipment can meet the charging requirement without being provided with a very long cable; the approaching charging form of water surface power generation and underwater charging can improve the charging efficiency of seabed equipment or facilities, and is beneficial to reducing the electric energy loss.

Description

Technical Field

[0001] The present invention relates to the technical field of power stations, and in particular to an underwater charging mobile energy station. Background Art

[0002] The ocean is rich in biological, mineral, oil and gas, space and other resources. With the rapid development of the marine economy, the construction of marine equipment in the fields of deep-sea pre-positioned equipment, deep-sea space stations, deep-sea unmanned vehicles, deep-sea observation networks, deep-sea mining, and deep-sea in-situ laboratories has been rapid. Deep-sea equipment such as deep-sea unmanned vehicles and deep-sea mining equipment use electricity as power. Their operating scenarios are relatively complex and require long hours of operation, so the charging problem is more critical.

[0003] For the charging of underwater unmanned aerial vehicles, a Chinese invention patent application with application publication number CN117833772A discloses a floating energy station, which includes a floating cabin, a power generation module, an energy storage control module, and a wireless charging module. The floating cabin is used to provide buoyancy for the floating energy station so that it can float on the sea surface; the power generation module is arranged on the floating cabin, and the power generation module is used to produce electric energy. The power generation module may include solar panels, axial wind power generation devices, and wave power generation devices, and use the sea surface environment to generate electricity; the energy storage control module is arranged on the floating cabin and is electrically connected to the power generation module. The energy storage control module is used to convert and store the electric energy generated by the power generation module; the wireless charging module is electrically connected to the energy storage control module, and is used to charge underwater unmanned equipment. When the underwater unmanned equipment needs to be charged, it only needs to find a nearby floating energy station for docking to achieve charging.

[0004] The above-mentioned energy station floating on the sea can be used for charging operations of underwater unmanned vehicles that can navigate autonomously, but for equipment or facilities deployed on the seabed, such as deep-sea pre-positioned equipment, deep-sea mining field operating equipment, deep-sea space stations, deep-sea in-situ laboratories, etc., they usually cannot move autonomously to the energy station floating on the sea surface for charging operations. If an umbilical cable is used to connect the floating energy station to the seabed equipment or facilities, a very long umbilical cable needs to be laid, which will generate more power loss during the charging process of the seabed equipment or facilities, and the power utilization efficiency will be reduced. Summary of the invention

[0005] The purpose of the present invention is to provide an underwater charging mobile energy station to solve the problem of high power loss in the current offshore energy station using umbilical cables to charge submarine equipment or facilities.

[0006] The technical solution of the underwater charging mobile energy station of the present invention is: An underwater charging mobile energy station, the energy station includes a power generation device and an energy storage device matched with the power generation device, the energy station also includes a lifting and sinking device and an active charging device, the active charging device is electrically connected to the energy storage device, the active charging device includes a charging connection device for electrically connecting to seabed equipment or facilities, the lifting and sinking device is used to drive the energy station to perform a lifting and sinking movement so that when the energy station floats on the sea surface, the sea surface environment is used to make the power generation device generate electricity, and when the energy station is sunk underwater, the active charging device is used to charge the seabed equipment or facilities.

[0007] Beneficial effect: The present invention improves on the basis of the offshore energy station in the prior art, and realizes an underwater charging mobile energy station that can generate electricity and store energy on the sea surface and move underwater to charge seabed equipment or facilities. Through the cooperation of the lifting and sinking device with the active charging device, the lifting and sinking device can drive the energy station to perform lifting and sinking movements, so that when the energy station floats on the sea surface, the sea surface environment is used to make the power generation device generate electricity, and when the energy station sinks underwater, the charging connection device of the active charging device is used to connect to the seabed equipment or facilities to charge them. The energy station can sink underwater and be close to the seabed equipment or facilities for charging operations. The corresponding charging connection equipment does not need to be equipped with a very long cable to meet the charging needs. Such a close charging form of surface power generation and underwater charging can improve the charging efficiency of seabed equipment or facilities, which is beneficial to reducing power loss.

[0008] Furthermore, the active charging device includes a charging robot that can navigate independently, and the charging robot is used to carry the charging connection device and actively navigate to the seabed equipment or facilities for charging.

[0009] Furthermore, the active charging device includes an active charging cabin for storing the charging robot, and a robot charging connection structure for charging the charging robot is provided in the active charging cabin.

[0010] Furthermore, the energy station also includes a passive charging device, which is electrically connected to the energy storage device, and the passive charging device includes a vehicle charging connection structure for electrically connecting the underwater vehicle to charge it.

[0011] Furthermore, the passive charging device includes a passive charging cabin for the underwater vehicle to enter and charge, and the vehicle charging connection structure is arranged in the passive charging cabin.

[0012] Furthermore, the energy station also includes a support cabin arranged at the bottom, in which a foldable support frame is provided and the support cabin is provided with an openable hatch cover. When the energy station sinks to the seabed, the hatch cover is opened and the support frame is unfolded so that the support frame is supported on the seabed. When the energy station rises to the sea surface or sinks to the seabed, the support frame is folded and the hatch cover is closed.

[0013] Furthermore, the energy station also includes a terrain detection device for detecting the seabed terrain and a driving device capable of driving the energy station to move horizontally.

[0014] Furthermore, the heaving and sinking device includes a buoyancy regulating device and a driving device capable of driving the energy station to move up and down, and the driving device cooperates with the buoyancy regulating device to perform the heaving and sinking movement of the energy station.

[0015] Furthermore, the energy station includes a load-bearing frame, which includes hollow load-bearing columns. The buoyancy adjustment device includes a buoyancy adjustment cabin integrated inside the load-bearing columns, which changes the net buoyancy of the energy station by suction and drainage to achieve heave and sink movement.

[0016] Furthermore, the energy station is also provided with an external charging interface for connecting to offshore wind power equipment, and the external charging interface is electrically connected to the energy storage device for charging the energy station through the offshore wind power equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an underwater charging mobile energy station according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the operation scenario of the underwater charging mobile energy station according to an embodiment of the present invention.

[0018] In the figure: 1. Wave energy transmission cable; 2. External charging interface; 3. Centralized controller; 4. Solar power generation device; 5. Communication antenna; 6. Collision avoidance sonar; 7. Upper charging dock; 8. Lower charging dock; 9. Hatch cover; 10. Vector thruster; 11. Wave energy generation device; 12. Terrain detection sonar; 13. Acoustic and optical guidance device; 14. Underwater vehicle to be docked and charged; 15. Charging robot; 16. Bottom support bracket; 17. Bottom support base. DETAILED DESCRIPTION

[0019] The underwater charging mobile energy station of the present invention can realize surface power generation and underwater charging, and the charging operation is performed by approaching seabed equipment or facilities, thereby reducing power loss during charging.

[0020] Embodiments of the underwater charging mobile energy station of the present invention: The underwater charging mobile energy station includes a power generation device, an energy storage device, a lifting and sinking device and an active charging device. The active charging device is electrically connected to the energy storage device. The active charging device includes a charging connection device for electrically connecting to seabed equipment or facilities. The lifting and sinking device is used to drive the energy station to perform a lifting and sinking movement, so that when the energy station floats on the sea surface, the sea surface environment is used to enable the power generation device to generate electricity, and when the energy station sinks underwater, the charging connection device of the active charging device is used to connect to the seabed equipment or facilities to charge them.

[0021] Specifically, Figure 1 , Figure 2 As shown, the underwater charging mobile energy station includes an installation platform located on the upper part thereof, on which a solar power generation device 4, a wave power generation device 11, a centralized controller 3, a communication antenna 5, and a collision avoidance sonar 6 are installed. The installation platform is a circular platform, and the solar panels of the solar power generation device 4 are arranged in the central area of ​​the platform for collecting and converting solar energy. The wave power generation device 11 is arranged in a circular array at the outer edge of the circular platform, and can collect and convert sea surface waves into electrical energy. The solar power generation device 4 and the wave power generation device 11 respectively constitute the power generation devices of the energy station that can generate electricity using the clean energy of the sea surface environment. In other embodiments, only a solar power generation device or only a wave power generation device may be provided, or other power generation devices that can generate electricity using the sea surface environment may be used, such as using temperature difference energy to generate electricity.

[0022] The underwater charging mobile energy station includes a load-bearing frame located in the middle thereof, the load-bearing frame is covered with a skin, the mounting platform is fixed on the upper end of the load-bearing frame, and an energy storage device, a heave device, and an active charging device are installed on the load-bearing frame. The energy storage device is matched with the power generation device to store the electric energy generated by the power generation device, and the wave energy power generation device 11 is connected to the energy storage device through a wave energy transmitting transmission cable 1. The active charging device is electrically connected to the energy storage device, and the active charging device includes a charging robot 15 and a charging connection device for electrically connecting to the seabed equipment or facilities. The heave device is used to drive the energy station to perform heave and sink movements between the sea surface and the seabed, so that when the energy station floats out of the sea, the sea surface environment is used to generate electricity for the power generation device, and when the energy station sinks underwater, the charging robot 15 and the charging connection device of the active charging device are used to actively charge the seabed equipment or facilities. The energy station can generate electricity and store energy on the sea surface and move underwater to charge the seabed equipment or facilities. The sealing of each device of the energy station is conventional technology, which can ensure that it sinks underwater without failure. By sinking the energy station underwater and charging close to the seabed equipment or facilities, the corresponding charging connection equipment does not need to be equipped with very long cables to meet the charging distance requirements. This close-range charging method of surface power generation and underwater charging can improve the charging efficiency of seabed equipment or facilities, help reduce energy loss, and also benefit the charging response speed.

[0023] The charging robot 15 of the active charging device can sail alone. The charging robot 15 can carry the charging connection device and actively sail to the submarine equipment or facilities for charging. It can adapt to different types of submarine equipment or facilities and is flexible to use. In other embodiments, a fixed manipulator can also be set. The manipulator is fixedly installed on the load-bearing frame. The manipulator grabs the charging connection device and connects it to the corresponding submarine equipment or facilities for charging. This structure can be used in situations where the underwater charging mobile energy station is relatively close to the equipment or facilities to be charged when it sinks to the seabed.

[0024] The active charging device includes an upper charging dock 7, which includes a plurality of active charging cabins distributed in a circle. The active charging cabin is used to store the charging robot 15. Each charging robot 15 is equipped with an active charging cabin. The active charging cabin is provided with a robot charging connection structure for charging the charging robot 15. The robot charging connection structure is electrically connected to the energy storage device. The charging robot 15 enters the active charging cabin for charging to ensure its independent navigation capability. The active charging cabin is also provided with a charging interface electrically connected to the energy storage device. The charging connection device includes a charging connector. The charging connector is connected to the corresponding charging interface in the active charging cabin through a charging connection line. The charging connector is arranged on the charging robot 15. When it is necessary to charge the submarine equipment or facilities, the charging robot 15 moves with the charging connection device, so that the charging connector of the charging connection device is docked with the charging port on the corresponding equipment or facilities. The energy storage device of the energy station charges the corresponding submarine equipment or facilities through the charging connection line and the charging connector. Wireless charging can be used for charging here. The charging connection line adopts a retractable structure, and of course, the charging connection line can also be made long enough to meet the needs of the charging distance. After charging is completed, the charging robot 15 returns to the active charging cabin. In other embodiments, a recovery rack can also be set on the outer wall of the energy station, and the robot falls on the recovery rack when returning. Accordingly, a robot charging connection structure is set on the recovery rack.

[0025] The energy station also includes a passive charging device, which is electrically connected to the energy storage device. The passive charging device includes a vehicle charging connection structure for electrically connecting the underwater vehicle to charge it. The passive charging device includes a lower charging dock 8, and the underwater vehicle 14 to be docked for charging can enter the lower charging dock 8 for charging, so that the energy station can adapt to the charging operation of the underwater vehicle. The active charging device is used for the energy station to actively approach the seabed equipment and facilities that are inconvenient to move for charging, and the passive charging device is used for other underwater vehicles to actively approach the energy station for charging when the energy station is not moving. In other embodiments, the passive charging device may not be provided as needed.

[0026] The lower charging dock 8 of the passive charging device includes a passive charging cabin for charging the underwater vehicle 14 to be docked. The vehicle charging connection structure is arranged in the passive charging cabin. There are multiple passive charging cabins, and each passive charging cabin is distributed circumferentially, so that multiple underwater vehicles can enter the corresponding passive charging cabins for charging. An acoustic and optical guidance device 13 is provided at the hatch of the passive charging cabin to guide the underwater vehicle to enter the cabin smoothly. In other embodiments, the charging cabin may not be provided separately, but the vehicle charging connection structure may be provided on the outer wall of the energy station. The vehicle charging connection structure adopts a wireless charging pile, and the underwater vehicle is attached to the wireless charging pile for charging.

[0027] The load-bearing frame of the energy station includes a plurality of load-bearing columns arranged in a circle, and the load-bearing columns are used to form the supporting body of the energy station. The space between each load-bearing column is respectively installed with the charging cabin of the corresponding charging docking station. The charging cabin is a modular cabin section. The active charging cabin is located below the passive charging cabin. The upper charging docking station 7 and the lower charging docking station 8 are arranged in an upper and lower interval. The passive charging cabin located on the upper layer is equipped with an acoustic and optical guidance device 13, which is used to guide underwater vehicles near the energy station to enter the energy station for charging. The active charging cabin located on the lower layer stores multiple charging robots 15, which can actively navigate to the area near the energy station and use an active docking method to wirelessly charge the submarine equipment or facilities. The central area of ​​the load-bearing frame is equipped with an energy storage device, which includes a large-volume buoyancy energy storage device and a high-energy density battery for storing the collected energy.

[0028] The heaving and sinking device of the energy station includes a buoyancy regulating device and a driving device capable of driving the energy station to move up and down. The driving device cooperates with the buoyancy regulating device to perform the heaving and sinking movement of the energy station, which can speed up the heaving and sinking speed and improve efficiency. In other embodiments, the driving device for driving the energy station to move up and down may not be provided as needed, and the heaving and sinking movement can be achieved by only relying on the buoyancy regulating device to adjust the buoyancy of the energy station.

[0029] The load-bearing columns of the load-bearing frame are hollow structures, and the buoyancy adjustment device includes a buoyancy adjustment cabin integrated with the internal space of the load-bearing columns, which can change the net buoyancy of the energy station by suction and drainage, thereby realizing the reciprocating heave and sink movement of the energy station as a whole from the water surface to the deep sea. In other embodiments, if space permits, the load-bearing columns can also be set as solid structures, and the buoyancy adjustment cabin can be set separately.

[0030] The energy station includes a support cabin arranged at the lower part thereof, a foldable support frame is arranged in the support cabin, and an openable hatch cover 9 is arranged in the support cabin, the support frame includes a bottom support bracket 16 and a bottom support base 17, and multiple support frames are arranged along the circumferential direction, the upper end of the bottom support bracket 16 is connected to the lower end of the load-bearing frame, and the lower end of the bottom support bracket 16 is fixed to the bottom support base 17, and the bottom support bracket 16 is a foldable structure so that the support frame can be folded and unfolded. Multiple hatch covers 9 are arranged along the circumferential direction, the upper end of the hatch cover 9 is hinged on the load-bearing frame, and the lower end is a pointed end. The hatch cover 9 is a streamlined structure, and the width gradually decreases from top to bottom. When each hatch cover 9 is closed, it surrounds the inner cavity of the support cabin. When the energy station sinks to the seabed, the hatch cover 9 is opened and the support frame is unfolded so that the support frame is supported on the seabed. When the energy station rises to the sea surface or sinks to the seabed, the support frame is folded and the hatch cover 9 is closed. When the energy station is rising and falling, the support frame is in a folded state, the hatch 9 is closed, and the support frame is hidden in the support cabin, which can reduce the fluid resistance during the movement. When the energy station sinks to the seabed to provide energy for seabed equipment or facilities, the hatch 9 is opened, the support frame is unfolded, and the bottom support base 17 is extended. The bottom support base 17 is used to support the seabed to keep the energy station stable. In other embodiments, a foldable support frame may not be provided, but the fixed support surface at the bottom of the energy station may be used to support the seabed directly.

[0031] The energy station also includes a terrain detection device for detecting the seabed terrain and a driving device capable of driving the energy station to move horizontally. The terrain detection device is arranged at a position between the hinged parts of two adjacent hatch covers 9 of the load-bearing frame to prevent the hatch covers 9 from blocking the field of vision. The driving device adopts a vector thruster 10, which can drive the energy station to move in different directions. The terrain detection device is a terrain detection sonar 12, which is a multi-beam sonar, and can model the seabed terrain in real time to guide the vector thruster 10 to adjust the posture so that the energy station can land smoothly on the seabed. The vector thruster 10 can be used to drive the energy station to move horizontally to change the landing position, and can also drive the energy station to move up and down to assist the buoyancy adjustment device to perform the heave and sink movement of the energy station. In other embodiments, a horizontal movement driving device capable of driving the energy station to move horizontally and a vertical movement driving device capable of driving the energy station to move up and down can also be provided respectively. In other embodiments, when the seabed terrain conditions are good, the terrain detection device can also be omitted as needed.

[0032] The installation platform of the energy station also integrates an external charging interface 2 for connecting offshore wind power equipment. The external charging interface 2 is electrically connected to the energy storage device for charging the energy station through wind power. The external power supply interface can be connected to the offshore wind power equipment to complete its own energy replenishment. In other embodiments, the external charging interface can be omitted as needed, and energy replenishment can be achieved only by solar energy or wave power generation.

[0033] In terms of power collection, the energy station integrates multiple energy collection equipment, which can not only collect and convert natural energy such as solar energy and wave energy, but also reserves an external charging interface, which can quickly obtain energy from offshore wind power equipment. In terms of power storage, the energy station integrates buoyancy energy storage devices and high-energy density batteries, which can effectively combine the advantages of the two in power storage, taking into account both economy and power transmission efficiency. In terms of power transportation, the energy station adopts an autonomous retractable drag reduction shape design and is equipped with multiple vector thrusters, which can effectively reduce energy loss during movement and speed up the reciprocating heave and sink movement between the water surface and the deep sea. The energy station collects and converts energy on the water surface. After completing the collection of multiple energy, it autonomously sinks to the deep seabed and fixes it, greatly shortening the distance to the deep-sea power supply equipment, which can effectively reduce the loss of electricity in the transmission process, and has great economic significance.

[0034] In terms of power release, the energy station integrates multiple retractable charging connection structures and charging robots. The charging robot is small and flexible. It can carry the charging connection equipment to quickly reach the vicinity of the equipment to be powered to complete the plug-in and unplug operations, and can also perform maintenance operations on underwater operating equipment. The whole process effectively avoids the energy loss of large deep-sea operating equipment during the charging process, improves the efficiency of power utilization, and shortens the power supply response speed. It can actively adapt to the posture requirements of deep-sea equipment, perform close wireless charging, and realize self-matching underwater power supply in multiple scenarios. When the power is released, it can float to the surface autonomously to collect and convert multiple energies again and enter the next energy self-sustaining cycle. In addition, the energy station can be deployed in clusters near deep-sea mines and deep-sea space stations to facilitate the nearby charging of deep-sea operating equipment.

[0035] The energy station can be randomly deployed to the operating sea area through a surface transport ship. The energy station generates electricity on the sea surface using its own integrated wave energy power generation device 11 and solar power generation device 4. After the power storage is completed, it uses its own buoyancy adjustment device and vector thruster 10 to achieve diving; and uses its own integrated navigation and control system to adjust the underwater posture and positioning; when diving to near the ground, it uses its own terrain detection sonar 12 to scan the terrain, find relatively flat terrain, and adjust the position; the bottom hatch 9 is opened, and the support frame is extended to achieve stable sitting on the ground; the energy station has two upper and lower charging cabins, the upper cabin is used for passive recovery and charging of unmanned equipment such as underwater robots, and the integrated sound and light guidance device 13 is used to guide the docking and recovery of unmanned equipment such as underwater robots, and enter the docking station for energy replenishment; a plurality of charging robots 15 are deployed in the lower cabin, and the charging robot 15 itself has mobility. When the deep-sea equipment needs to be charged, it is self-propelled and released from the cabin, and actively searches for the equipment to be charged, and actively docks. After the docking is completed, it is wirelessly charged using the wireless charging device carried. The entire process is realized autonomously, which can fully guarantee the energy supply of underwater equipment such as deep-sea mining vehicles and deep-sea laboratories.

[0036] The energy station can be deployed flexibly near deep-sea pre-positioned equipment, deep-sea mining sites, deep-sea space stations, deep-sea in-situ laboratories and other operating areas. It can generate electricity by using marine environment energy collection facilities such as solar energy, temperature difference energy, and wave energy. If it is near an offshore wind farm, it can also use wind power to store energy in situ by "taking local materials". The energy station can collect and convert various forms of clean energy on the water surface and then sink to the deep sea autonomously to meet the power supply needs of deep-sea operating equipment and infrastructure. The energy station deploys multiple powered charging robots in a circumferential cluster, which can rely on its own power, carry wireless charging equipment, actively approach deep-sea equipment that needs energy replenishment in the charging area, and use wireless charging to replenish its energy. At the same time, the energy station itself reserves passive charging cabins to support unmanned vehicles and other equipment to actively enter the cabin for charging. The energy station has the functions of mobile deployment in deep-sea environment, self-sufficient power generation using local materials, reservation of external energy interfaces, active connection of energy replenishment, and wireless charging posture adaptation. It has great promotion and application prospects for the future marine equipment industry.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An underwater charging mobile energy station, which includes a power generation device and an energy storage device matched with the power generation device, characterized in that: The energy station also includes a lifting and sinking device and an active charging device. The active charging device is electrically connected to the energy storage device. The active charging device includes a charging connection device for electrically connecting to seabed equipment or facilities. The lifting and sinking device is used to drive the energy station to perform a lifting and sinking movement so that when the energy station floats on the sea surface, the sea surface environment is used to enable the power generation device to generate electricity, and when the energy station is sunk underwater, the active charging device is used to charge the seabed equipment or facilities.

2. The underwater charging mobile energy station according to claim 1 is characterized in that: The active charging device includes a charging robot that can sail independently. The charging robot is used to carry the charging connection equipment and actively sail to the seabed equipment or facilities for charging.

3. The underwater charging mobile energy station according to claim 2 is characterized in that: The active charging device comprises an active charging cabin for storing a charging robot, and a robot charging connection structure for charging the charging robot is arranged in the active charging cabin.

4. The underwater charging mobile energy station according to claim 1, 2 or 3, characterized in that: The energy station also includes a passive charging device, which is electrically connected to the energy storage device. The passive charging device includes a vehicle charging connection structure to which the underwater vehicle is electrically connected for charging.

5. The underwater charging mobile energy station according to claim 4 is characterized in that: The passive charging device includes a passive charging cabin for underwater vehicles to enter and charge, and the vehicle charging connection structure is arranged in the passive charging cabin.

6. The underwater charging mobile energy station according to claim 1, 2 or 3, characterized in that: The energy station also includes a support cabin arranged at the bottom, in which a foldable support frame is provided and an openable hatch cover is provided. When the energy station sinks to the seabed, the hatch cover is opened and the support frame is unfolded so that the support frame is supported on the seabed. When the energy station rises to the sea surface or sinks to the seabed, the support frame is folded and the hatch cover is closed.

7. The underwater charging mobile energy station according to claim 6 is characterized in that: The energy station also includes a terrain detection device for detecting the seabed terrain and a driving device capable of driving the energy station to move horizontally.

8. The underwater charging mobile energy station according to claim 1, 2 or 3, characterized in that: The heaving and sinking device includes a buoyancy regulating device and a driving device capable of driving the energy station to move up and down, and the driving device cooperates with the buoyancy regulating device to perform the heaving and sinking movement of the energy station.

9. The underwater charging mobile energy station according to claim 8 is characterized in that: The energy station comprises a load-bearing frame, which comprises hollow load-bearing columns. The buoyancy regulating device comprises a buoyancy regulating cabin integrated inside the load-bearing columns, which realizes the heave and sink movement by changing the net buoyancy of the energy station in the form of suction and drainage.

10. The underwater charging mobile energy station according to claim 1, 2 or 3, characterized in that: The energy station is also provided with an external charging interface for connecting to offshore wind power equipment, and the external charging interface is electrically connected to the energy storage device for charging the energy station through the offshore wind power equipment.

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