Floating energy storage platform

Abstract

The invention provides a floating energy storage platform which comprises a floating body with a semicircular longitudinal section and a platform portion arranged on the floating body. The energy storage group is arranged on the platform part; and the first end of the connecting cable is connected with the ground, and the second end of the connecting cable is connected with the energy storage group. According to the technical scheme, the problem that an energy storage device is arranged on the ground in the prior art, so that the occupied area of the energy storage device is large is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to a floating energy storage platform. Background Art

[0002] With the continuous development of new energy, the installed capacity of wind power and solar power generation has increased year by year. However, wind power and solar power generation have the characteristics of intermittency and volatility, which makes grid dispatching difficult and reduces utilization efficiency. During wind power generation, the fluctuation of wind turbine output power leads to deterioration of power quality, which can easily cause unstable operation of the power system. With the increasing attention paid to energy storage technology around the world, the application of energy storage technology to wind power generation can improve the power quality of wind power generation, increase the output and utilization efficiency of wind power generation, and solve the problem of power fluctuation of wind power generation, ensure the smooth operation of the power grid, and solve the problem of wind power generation grid connection.

[0003] At present, in offshore wind power energy storage projects, energy storage devices are all buried in the landfill. This method has the following disadvantages: the energy storage device is inconvenient to access, the structure is complex, and the stability requirements are high; at the same time, due to the buried landfill of the energy storage device, the energy storage device cannot effectively utilize the water surface, resulting in a large footprint of the energy storage device. At the same time, the bottom water body has a great influence on the buoyancy and stability of the energy storage device, resulting in poor stability of the energy storage device. Summary of the invention

[0004] The main purpose of the present invention is to provide a floating energy storage platform to solve the problem in the related art that the energy storage device is arranged on the ground, resulting in a large area occupied by the energy storage device.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a floating energy storage platform, comprising: a floating body, the longitudinal cross-section of the floating body is semicircular, and the floating body has a platform portion; an energy storage group, which is arranged on the platform portion; and a connecting cable, the first end of the connecting cable is connected to the ground, and the second end of the connecting cable is connected to the energy storage group.

[0006] Furthermore, the diameter a of the platform portion and the height b of the floating body satisfy: 0.4≤b / a≤0.5.

[0007] Furthermore, the energy storage group includes a plurality of energy storage inverters and a plurality of batteries, the plurality of batteries are arranged in an array, and the plurality of energy storage inverters are arranged at intervals and around the periphery of the plurality of batteries.

[0008] Furthermore, the platform portion includes a hardened layer, and bolts are arranged in the hardened layer.

[0009] Furthermore, the floating body has a buoyancy source, which is hydrogen, and / or the radius of the platform portion is greater than or equal to 110 m.

[0010] Furthermore, the floating energy storage platform also includes multiple angle adjustment devices, a horizontal detection device and a controller. The horizontal detection device is arranged on the platform part, and the multiple angle adjustment devices are arranged at intervals between the floating body and the connecting cable. The controller can control the multiple angle adjustment devices according to the signal of the horizontal detection device.

[0011] Furthermore, the angle adjustment device includes a connecting rod, a connecting line and a moving member, the moving member is movably arranged on the connecting rod, the connecting rod is connected to the connecting cable, and the connecting line is connected between the moving member and the floating body.

[0012] Furthermore, the moving member includes a shell and a moving wheel, and the moving wheel is rotatably arranged inside the shell and abuts against the moving wheel.

[0013] Furthermore, the shell includes a first vertical plate, a second vertical plate, a connecting plate and an abutment block, the connecting plate is connected between the first end of the first vertical plate and the first end of the second vertical plate, the abutment block is connected to the second end of the first vertical plate, and the connecting rod is located between the moving wheel and the abutment block.

[0014] Furthermore, the floating energy storage platform also includes a connecting sleeve, which is arranged on the connecting cable, and a plurality of angle adjustment devices are arranged between the connecting sleeve and the floating body.

[0015] By applying the technical solution of the present invention, a floating body is provided with a platform portion, an energy storage group is arranged on the platform portion, a first end of a connecting cable is connected to the ground, and a second end of the connecting cable is connected to the energy storage group. Through the above-mentioned arrangement, the connecting cable can realize power transmission, and the connecting cable can realize pulling the floating body, thereby making the position of the floating body more stable. At the same time, since the longitudinal cross-section of the floating body is semicircular, the floating stability of the floating body can be better. The energy storage group can realize energy storage. The floating body lifts the energy storage group in the air, thereby avoiding the energy storage group from occupying space on the ground. Therefore, the technical solution of the present application effectively solves the problem in the related art that the energy storage device is arranged on the ground, resulting in a large footprint of the energy storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a floating energy storage platform according to the present invention is shown;

[0018] Figure 2 Shows Figure 1 A top view schematic diagram of a floating energy storage platform;

[0019] Figure 3 Shows Figure 1 A cross-sectional schematic diagram of a floating energy storage platform;

[0020] Figure 4 Shows Figure 1 A schematic diagram of the three-dimensional structure of the connecting rods and moving parts of the floating energy storage platform;

[0021] Figure 5 Shows Figure 4 Schematic cross-sectional view of the moving parts.

[0022] The above drawings include the following reference numerals:

[0023] 10. Floating body; 11. Platform part; 20. Energy storage group; 21. Energy storage converter; 22. Battery; 30. Connecting cable; 40. Angle adjustment device; 41. Connecting rod; 42. Connecting line; 43. Moving part; 431. Shell; 4311. First vertical plate; 4312. Second vertical plate; 4313. Connecting plate; 4314. Abutment block; 432. Moving wheel; 50. Connecting sleeve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0027] like Figure 1 and Figure 2 As shown, in this embodiment, the floating energy storage platform includes: a floating body 10, an energy storage group 20 and a connecting cable 30. The longitudinal cross-section of the floating body 10 is semicircular, and the floating body 10 has a platform portion 11. The energy storage group 20 is arranged on the platform portion 11. The first end of the connecting cable 30 is connected to the ground, and the second end of the connecting cable 30 is connected to the energy storage group 20.

[0028] By applying the technical solution of this embodiment, a platform portion 11 is provided on the floating body 10, an energy storage group 20 is arranged on the platform portion 11, a first end of a connecting cable 30 is connected to the ground, and a second end of the connecting cable 30 is connected to the energy storage group 20. Through the above-mentioned arrangement, the connecting cable 30 can realize power transmission, and the connecting cable 30 can realize pulling the floating body 10, thereby making the position of the floating body 10 more stable. At the same time, since the longitudinal cross-section of the floating body 10 is semicircular, the floating stability of the floating body 10 can be better. The energy storage group 20 can realize energy storage. The floating body 10 lifts the energy storage group 20 in the air, thereby avoiding the energy storage group 20 from occupying the space on the ground. Therefore, the technical solution of this embodiment effectively solves the problem in the related art that the energy storage device is arranged on the ground, thereby resulting in a large footprint of the energy storage device.

[0029] like Figures 1 to 3 As shown, in this embodiment, the diameter a of the platform portion 11 and the height b of the floating body 10 satisfy: 0.4≤b / a≤0.5. Such a proportional relationship not only optimizes the structural strength of the platform portion 11, but also improves the buoyancy efficiency of the floating body 10, so that it can carry more energy storage groups 20 while ensuring stability.

[0030] like Figure 2As shown, in this embodiment, the energy storage group 20 includes a plurality of energy storage converters 21 and a plurality of batteries 22, the plurality of batteries 22 are arranged in an array, and the plurality of energy storage converters 21 are arranged at intervals and around the periphery of the plurality of batteries 22. This layout not only improves the energy storage efficiency, but also facilitates the maintenance and management of the equipment, and is particularly suitable for scenarios requiring large-scale power storage and rapid response.

[0031] Specifically, through reasonable layout, the energy storage converter 21 can quickly distribute and convert electricity between the batteries 22, thereby improving energy utilization efficiency. At the same time, this design facilitates maintenance personnel to inspect and repair the equipment, ensuring the reliability and continuous operation of the system.

[0032] like Figure 2 As shown, in this embodiment, the platform portion 11 includes a hardened layer, and bolts are arranged in the hardened layer. The hardened layer enhances the bearing capacity and durability of the platform portion 11, and the pre-embedded bolts facilitate the rapid installation and removal of the energy storage group 20.

[0033] Specifically, the use of the hardened layer improves the hardness and wear resistance of the platform portion 11 and prolongs the service life of the platform portion 11, while the pre-embedded bolts make the installation and removal of the energy storage group 20 more convenient without the need for a complicated construction process.

[0034] like Figures 1 to 3 As shown, in this embodiment, the floating body 10 has a buoyancy source, which is hydrogen, and the radius of the platform portion 11 is greater than or equal to 110m. Using hydrogen as a buoyancy source not only reduces the weight of the floating body 10, but also reduces the impact on the environment. A larger radius of the floating body 10 can accommodate more energy storage groups 20, thereby increasing the energy storage capacity.

[0035] Specifically, hydrogen, as a clean energy, reduces the pollution of the floating body 10 to the environment, which is particularly important for offshore wind farms and solar power generation projects that pursue green energy. The increase in the radius of the platform part 11 significantly increases the energy storage capacity, which is suitable for handling the power storage needs of large-scale power generation projects, such as offshore wind power super bases established in offshore areas.

[0036] Hydrogen is used as the buoyancy source in the floating body 10. According to preliminary calculations, every 1m 3 The hydrogen has a buoyancy of about 1.5 kg. When the battery 22 is considered to be 314 Ah, the 10 MWh energy storage system weighs about 70 t, the supporting energy storage converter 21 weighs about 30 t, and the total weight of the 100 MWh energy storage group 20 is about 1000 t. The required hydrogen volume is about 666667 m 3 Considering the weight of the floating body 10 and some cables, it takes about 700,000m 3Hydrogen can make the floating energy storage platform float in the air. The floating body 10 is a hemisphere. According to the volume formula of a sphere V=4 / 3πr3, the radius of the floating body 10 is at least 110m, that is, the site radius of the floating energy storage platform is at least 110m.

[0037] like Figures 3 to 5 As shown, in this embodiment, the floating energy storage platform further includes a plurality of angle adjustment devices 40, a level detection device and a controller. The level detection device is arranged on the platform portion 11, and the plurality of angle adjustment devices 40 are arranged at intervals between the floating body 10 and the connecting cable 30. The controller can control the plurality of angle adjustment devices 40 according to the signal of the level detection device. This design enables the platform to maintain a horizontal state in a complex and changeable airspace environment, thereby improving the working efficiency and safety of the energy storage equipment.

[0038] It should be noted that, through the cooperation of the angle adjustment device 40 and the controller, the posture of the platform part 11 can be automatically adjusted to prevent equipment damage or unstable power output due to tilting.

[0039] like Figures 3 to 5 As shown, in this embodiment, the angle adjustment device 40 includes a connecting rod 41, a connecting line 42 and a moving member 43, the moving member 43 is movably arranged on the connecting rod 41, the connecting rod 41 is connected to the connecting cable 30, and the connecting line 42 is connected between the moving member 43 and the floating body 10. This adjustable angle adjustment device 40 can adjust the posture of the platform part 11 according to real-time environmental changes, ensuring that the energy storage group 20 can maintain the best working state under any conditions.

[0040] This dynamic adjustment mechanism enables the platform portion 11 to adapt to different wind conditions and maintain efficient operation of the energy storage group 20. It is particularly suitable for scenarios with frequent wind changes and ensures continuous and stable output of electricity.

[0041] like Figures 3 to 5 As shown, in this embodiment, the moving member 43 includes a housing 431 and a moving wheel 432, and the moving wheel 432 is rotatably disposed inside the housing 431 and abuts against the moving wheel 432. This design enables the moving member 43 to move smoothly on the connecting rod 41, reduces excessive friction and wear, and can ensure the movement of the moving member 43, prolonging the service life of the device, and is suitable for energy storage platforms that operate in the air for a long time.

[0042] like Figures 3 to 5As shown, in this embodiment, the housing 431 includes a first vertical plate 4311, a second vertical plate 4312, a connecting plate 4313 and an abutting block 4314. The connecting plate 4313 is connected between the first end of the first vertical plate 4311 and the first end of the second vertical plate 4312. The abutting block 4314 is connected to the second end of the first vertical plate 4311. The connecting rod 41 is located between the moving wheel 432 and the abutting block 4314. This structural design not only enhances the stability of the moving member 43, but also simplifies its manufacturing and maintenance process.

[0043] like Figures 3 to 5 As shown, in this embodiment, the structural design of the moving member 43 ensures stability and safety when adjusting the position of the platform portion 11, and reduces maintenance difficulties caused by complex structure.

[0044] like Figure 1 and Figure 3 As shown, in this embodiment, the floating energy storage platform further includes a connecting sleeve 50, which is sleeved on the connecting cable 30, and a plurality of angle adjustment devices 40 are arranged between the connecting sleeve 50 and the floating body 10. The use of the connecting sleeve 50 not only protects the connecting cable 30, but also prevents the connecting rod 41 from excessively pulling the connecting cable 30.

[0045] Specifically, the setting of the connecting sleeve 50 provides additional protection for the connecting cable 30, reduces the frequency of maintenance and replacement, is suitable for energy storage platforms that operate in strong wind environments for a long time, and ensures stable power transmission between the platform part 11 and the ground.

[0046] like Figures 1 to 5As shown, the floating energy storage platform of this embodiment adopts a semicircular floating body 10 design, which not only improves the stability of the platform part 11, but also uses hydrogen as a buoyancy source to achieve lightweight and efficient buoyancy of the floating body 10. The energy storage group 20 on the platform part 11 and the bolts set in the hardened layer ensure the stable installation and safe operation of the energy storage group 20. By setting the angle adjustment device 40, the horizontal detection device and the controller, the horizontal state of the platform part 11 can be monitored and adjusted in real time, and the adaptability and safety of the platform part 11 in complex environments are enhanced. In addition, the radius of the platform part 11 is designed to be greater than or equal to 110m, which further improves the energy storage capacity and the stability of the platform part 11. The use of the connecting sleeve 50 protects the connecting cable 30, prolongs its service life, and ensures a stable connection between the floating body 10 and the ground. The overall solution not only improves the flexibility and deployability of the energy storage platform, but also effectively reduces the construction and operation costs, providing an innovative solution for energy storage and supply in the sky. At the same time, the floating energy storage platform can also be used as a supporting energy storage facility for offshore renewable energy power generation systems, such as combining with offshore wind power generation and solar power generation to form an integrated energy supply system to provide continuous and stable power support for offshore operations, or as a peak-shaving energy storage station for the power grid to effectively balance power supply and demand and improve the stability and reliability of the power grid. The comprehensive design of the floating energy storage platform enables it to demonstrate excellent performance in various fields, especially in the field of renewable energy. It can effectively store and manage electricity generated by offshore wind and solar power generation, and is suitable for establishing a green energy offshore super grid, providing key support for energy transformation under global climate change.

[0047] The floating energy storage platform of this embodiment places the energy storage equipment in the air and uses buoyancy to reduce the ground space occupation. At the same time, the aerial position can reduce the heat island effect and improve the efficiency of the battery 22. The system design is flexible, and the installed capacity can be adjusted according to the grid demand in different regions. The high-strength lightweight materials and hydrogen filling used ensure the stability and buoyancy of the floating energy storage platform. In addition, through the control logic of the connecting cable 30, the efficient charging and discharging of the energy storage power station is realized, and the setting of the safety circuit breaker further ensures the safe operation of the system. Overall, the system not only improves the efficiency of electric energy storage and transmission, but also effectively utilizes air resources, providing an innovative solution to solve the problems of energy storage and grid peak regulation. Especially in densely populated urban areas with scarce land resources, and industrial areas with extremely high requirements for power supply stability, this high-altitude floating energy storage platform can play its unique advantages and become an important part of future energy management. With the continuous advancement of technology, the system is expected to further reduce costs, increase energy density, achieve wider commercial applications, and contribute to global energy transformation and sustainable development.

[0048] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0049] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0050] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A floating energy storage platform, characterized in that: include: A floating body (10), wherein the longitudinal cross section of the floating body (10) is semicircular, and the floating body (10) is provided with a platform portion (11); An energy storage group (20) is arranged on the platform portion (11); A connecting cable (30), wherein a first end of the connecting cable (30) is connected to the ground, and a second end of the connecting cable (30) is connected to the energy storage group (20).

2. The floating energy storage platform according to claim 1, characterized in that: The diameter a of the platform part (11) and the height b of the floating body (10) satisfy the following relationship: 0.4≤b / a≤0.

5.

3. The floating energy storage platform according to claim 1, characterized in that: The energy storage group (20) comprises a plurality of energy storage inverter devices (21) and a plurality of batteries (22); the plurality of batteries (22) are arranged in an array; and the plurality of energy storage inverter devices (21) are arranged at intervals and surround the periphery of the plurality of batteries (22).

4. The floating energy storage platform according to claim 1, characterized in that: The platform portion (11) comprises a hardened layer, and bolts are arranged in the hardened layer.

5. The floating energy storage platform according to claim 1, characterized in that: The floating body (10) has a buoyancy source, the buoyancy source is hydrogen, and / or the radius of the platform part (11) is greater than or equal to 110 m.

6. The floating energy storage platform according to any one of claims 1 to 5, characterized in that: The floating energy storage platform further comprises a plurality of angle adjustment devices (40), a level detection device and a controller, wherein the level detection device is arranged on the platform portion (11), the plurality of angle adjustment devices (40) are arranged at intervals between the floating body (10) and the connecting cable (30), and the controller is capable of controlling the plurality of angle adjustment devices (40) according to signals from the level detection device.

7. The floating energy storage platform according to claim 6, characterized in that: The angle adjustment device (40) comprises a connecting rod (41), a connecting line (42) and a moving member (43); the moving member (43) is movably arranged on the connecting rod (41); the connecting rod (41) is connected to the connecting cable (30); and the connecting line (42) is connected between the moving member (43) and the floating body (10).

8. The floating energy storage platform according to claim 7, characterized in that: The moving member (43) comprises a housing (431) and a moving wheel (432). The moving wheel (432) is rotatably arranged inside the housing (431) and abuts against the moving wheel (432).

9. The floating energy storage platform according to claim 8, characterized in that: The shell (431) includes a first vertical plate (4311), a second vertical plate (4312), a connecting plate (4313) and an abutment block (4314), wherein the connecting plate (4313) is connected between the first end of the first vertical plate (4311) and the first end of the second vertical plate (4312), the abutment block (4314) is connected to the second end of the first vertical plate (4311), and the connecting rod (41) is located between the moving wheel (432) and the abutment block (4314).

10. The floating energy storage platform according to claim 7, characterized in that: The floating energy storage platform further comprises a connecting sleeve (50), wherein the connecting sleeve (50) is sleeved on the connecting cable (30), and a plurality of the angle adjustment devices (40) are arranged between the connecting sleeve (50) and the floating body (10).

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