Offshore hydrogen charging station

Abstract

An offshore hydrogen charging station according to one embodiment of the present invention includes a wind power generation unit that is mounted on a buoyant body floating on the sea and generates electricity using wind power, an electrolysis unit that electrolyzes seawater using electricity generated by the wind power generation unit, and a hydrogen storage unit that stores hydrogen generated by the electrolysis unit.

Description

[Technical Field]

[0001] The present invention relates to an offshore hydrogen charging station, and more particularly to an offshore hydrogen charging station that can produce and store hydrogen through wind power generation and electrolysis at sea, and can easily charge hydrogen at sea by connecting a transport means to a storage tank. [Background technology]

[0002] Generally, wind turbines are installed on land, but the process of transporting hydrogen produced by wind power to the sea is cumbersome and expensive, so recently, a method of producing hydrogen through wind power generation at sea has been adopted.

[0003] When installed at sea, it is mainly installed in shallow waters and is fixed directly to the seabed, so the method is not significantly different from that used when installed on land.

[0004] In other words, wind turbines have been fixed to the seabed to prevent them from drifting, but this has led to problems such as a significant disparity in electricity production due to changes in the offshore environment, such as wind direction, and a drop in energy efficiency.

[0005] To solve this problem, a yawing structure was used on the propeller, allowing the propeller to rotate in the direction of the wind, but the yawing method had the disadvantage of being very vulnerable to external impacts and requiring high maintenance costs.

[0006] Furthermore, conventional offshore wind turbines are fixed in a specific location, which can significantly reduce energy efficiency when the wind direction is weak due to the offshore environment.

[0007] As described above, the prior art only discloses a theoretical technique of simply installing a wind power generator on a ship and producing hydrogen using electrolysis.

[0008] As a result, the power generation efficiency of wind turbines decreases due to changes in the marine environment, and if the amount of hydrogen produced is low, the internal pressure of the hydrogen storage tank changes, making it very difficult to store and manage small amounts of hydrogen.

[0009] In addition, conventional technologies lack a means for actively controlling the attitude or balance to correspond to the wind direction at sea, which has the disadvantage that power generation efficiency and hydrogen production efficiency drop sharply due to changes in wind direction.

[0010] This has raised the need for wind power generation technology that can minimize the impact of changes in the marine environment and improve energy efficiency, as well as hydrogen production technology that can easily recharge the hydrogen produced in this way. Summary of the Invention [Problem to be solved by the invention]

[0011] The object of the present invention is to provide an offshore hydrogen charging station that can produce and store hydrogen through wind power generation and electrolysis at sea, and can easily charge hydrogen at sea by connecting a transport means to a storage tank.

[0012] The technical problems to be solved by the present invention are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below. [Means for solving the problem]

[0013] In order to solve the above-mentioned problems, the present invention provides a wind power generating unit that is provided on a floating body floating on the sea and generates electricity by utilizing wind power, an electrolysis unit that electrolyzes seawater using the electricity generated by the wind power generating unit, and a hydrogen storage unit that stores hydrogen generated by the electrolysis unit. The wind power generation unit includes a propeller provided on an upper portion of the buoyant body, a generator coupled to the propeller to produce electricity, and a support member supporting a lower portion of the propeller on an upper portion of the buoyant body, the support member extending upward from the buoyant body, the width of the support member in a longitudinal direction in a plan view being greater than the width in a lateral direction, the longitudinal direction of the support member in a plan view being formed along a first direction which is the longitudinal direction of the buoyant body, the support member being formed in a shape in which the width in the longitudinal direction becomes wider from the top to the bottom, and supporting the propeller to rotate around an axis along the first direction. .

[0014] The present invention further includes a fixing means for fixing one end of the buoyant body to the seabed surface so that the range of movement of the buoyant body on the sea is limited within a predetermined range.

[0015]

[0016] The present invention further includes an accommodation space connected to the buoyant body, capable of accommodating at least one of a living area, a water electrolysis facility, a compression device, a storage tank, and office equipment.

[0017] In addition, the present invention further includes a landing section provided at the top of the storage space, where a transport means including at least one of a drone and a helicopter can safely arrive.

[0018] In addition, the present invention further includes a support member that is provided on the upper part of the buoyant body and has a width direction that is perpendicular to a first direction, which is the longitudinal direction of the buoyant body on a horizontal plane, and the width of the support member is formed wider than the width of the buoyant body based on the second direction.

[0019] Furthermore, a large number of propellers and support members of the wind power generation unit are arranged at predetermined intervals in the second direction on the support body.

[0020] The present invention further includes auxiliary members that are arranged at the front and rear ends of the support body along the first direction and are tapered from the upper end of the support body toward the top of the buoyant body.

[0021]

[0022] [Effects of the Invention]

[0023] According to one embodiment of the present invention, hydrogen can be produced and stored at sea through wind power generation and electrolysis, and the transport means can be connected to a storage tank, which makes it easy to charge hydrogen at sea.

[0024] The effects that can be obtained by the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those having ordinary skill in the art to which the present invention pertains from the description below. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a perspective view of a floating hydrogen charging station according to an embodiment of the present invention; [Figure 2] 1 is a perspective view showing a support and an auxiliary member according to an embodiment of the present invention; [Figure 3] 1 is a view showing a fixing means according to an embodiment of the present invention; [Figure 4] 1 is a perspective view showing an accommodating space and a seat according to an embodiment of the present invention; [Figure 5] 1 is a diagram illustrating a method for charging hydrogen into a vehicle using an offshore hydrogen charging station according to an embodiment of the present invention. [Figure 6] 1 is a diagram illustrating a method for manufacturing a marine hydrogen charging station according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0027] The detailed description set forth below, together with the accompanying drawings, is intended to describe exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced.

[0028] In the drawings, in order to clearly explain the present invention, parts that are not relevant to the description may be omitted, and the same reference numerals may be used throughout the specification for the same or similar components.

[0029] In the embodiments of the present invention, the terms "or," "at least one," and the like may refer to one of the words listed together, or a combination of two or more.

[0030] In the following embodiments of the present invention, the size, thickness, and shape of each component are illustrated exaggerated for the convenience of explanation, and an actual offshore hydrogen charging station may have a different size and shape.

[0031] Furthermore, the illustrated wiring connection structure is shown simply for convenience, and different connection forms may be applied. Although the top, bottom, side, etc. are indicated based on a specific component, this is for convenience of explanation, and may be interpreted as a different direction from the indicated direction depending on the rotation or placement of the device.

[0032] Before describing the marine hydrogen charging station of the present invention, the prior art will first be described.

[0033] Generally, wind turbines are installed on land, but the process of transporting hydrogen produced by wind power to the sea is cumbersome and expensive, so recently, a method of producing hydrogen through wind power generation at sea has been adopted.

[0034] When installed at sea, it is mainly installed in shallow waters and is fixed directly to the seabed, so the method is not significantly different from that used on land.

[0035] In other words, the wind turbines have been fixed to the seabed to prevent them from drifting away, but this has led to serious discrepancies in electricity production due to changes in the offshore environment, such as wind direction, and has led to problems with reduced energy efficiency.

[0036] To solve this problem, a yawing structure was used on the propeller, allowing the propeller to rotate according to the wind direction, but the yawing method had the disadvantage of being very vulnerable to external impacts and requiring high maintenance costs.

[0037] Furthermore, conventional offshore wind turbines are fixed in a specific location, which can significantly reduce energy efficiency when the wind direction is weak due to the offshore environment.

[0038] As described above, the prior art only discloses a theoretical technique of simply installing a wind power generator on a ship and producing hydrogen using electrolysis.

[0039] As a result, the power generation efficiency of wind turbines decreases due to changes in the marine environment, and if the amount of hydrogen produced is low, the internal pressure of the hydrogen storage tank changes, making it very difficult to store and manage small amounts of hydrogen.

[0040] In addition, conventional technologies have the disadvantage that the efficiency of power generation and hydrogen production drops sharply due to changes in wind direction, as there is no means to actively control the attitude or balance to correspond to the wind direction at sea.

[0041] The offshore hydrogen charging station according to one embodiment of the present invention has been devised to address such technical needs, and has the advantages of utilizing wind power generation technology that can minimize the impact of changes in the offshore environment and improve energy efficiency, as well as easily charging the hydrogen produced in this way.

[0042] Hereinafter, a marine hydrogen charging station according to one embodiment of the present invention will be described.

[0043] FIG. 1 is a perspective view of a floating hydrogen charging station according to one embodiment of the present invention.

[0044] Referring to FIG. 1, a marine hydrogen charging station 10 of the present invention may include a wind power generation unit 110, an electrolysis unit 120, and a hydrogen storage unit .

[0045] First, the wind power generation unit 110 is provided on a floating body floating on the sea and functions to generate electricity using wind power, and may be composed of a propeller 111, a generator 112, and a support member 113.

[0046] The propeller 111 is provided on the upper part of the buoyant body, the generator 112 is coupled to the propeller 111 to generate electricity, and the support member 113 functions to support the generator 112 and the lower part of the propeller 111 on the upper part of the buoyant body.

[0047] The generator 112 may be provided on or inside the support member 113 or on the top of the buoyant body 100, and there is no limitation on the installation position.

[0048] The support member 113 has a vertical surface formed along the first direction, which is the longitudinal direction of the buoyant body 100, and the vertical surface is formed in a shape that becomes wider from the top to the bottom, so that it can be installed to prevent the propeller 111 from being moved by external forces.

[0049] For example, the support member 113 may be provided in the shape of a vertical tail of an airplane, which has the advantage that no yawing structure needs to be applied to the propeller 111 of the present invention.

[0050] Existing wind power generators 112 generally use a yawing system in which the turbine is mounted on a cylindrical tower and the direction of the turbine is controlled according to the direction of the wind. However, the yawing structure has the disadvantage of being very vulnerable to external impacts and requiring high maintenance costs.

[0051] However, since the buoyant body 100 of the present invention is not fixed in position but floats on the sea, when the above-mentioned support member 113 configuration is applied, the direction of the buoyant body 100 can be automatically controlled according to the wind direction without a separate control device, and it can be configured to make use of good quality wind.

[0052] Therefore, structural stability is ensured while maximizing the energy efficiency of wind power generation, reducing the cost of manufacturing turbines for directional control, and reducing the possibility of turbine failure, thereby reducing maintenance costs.

[0053] Next, the electrolysis unit 120 functions by electrolyzing seawater using the electricity generated by the wind power generation unit 110 .

[0054] The electrolysis unit 120 electrolyzes seawater to produce hydrogen, oxygen, and sodium hypochlorite.

[0055] The hydrogen produced in this manner is transferred to the hydrogen storage unit 130 described below, and the sodium hypochlorite may be used to sterilize seawater that has flowed into a ballast tank on a ship.

[0056] Typically, a ship can be balanced by using a pump to inject seawater into the balancing tank or to drain seawater from the balancing tank as needed.

[0057] In this case, if various foreign substances, microorganisms such as plankton, and bacteria contained in the seawater from the inflowing area are discharged into the ocean, which has a completely different environment, there is a risk that this will cause changes to the marine ecosystem.

[0058] However, by using the electrolysis unit 120 of the present invention, it is possible to kill microorganisms contained in seawater in the ballast tank using sodium hypochlorite and then release the seawater into the ocean, which has the advantage of preventing the disruption and destruction of the marine ecosystem.

[0059] A hydrogen storage unit 130 may then be provided to store the hydrogen produced from the electrolysis unit 120 described above.

[0060] The hydrogen storage unit 130 may be provided in the form of a storage tank, and the generated hydrogen may be stored in the storage tank in the form of liquefied hydrogen or hydrogen gas through a compressor and a hydrogen transfer line connected to the electrolysis unit 120.

[0061] The electrolysis unit 120 and the hydrogen storage unit 130 may be provided on or inside the buoyant body 100, or on or inside a support body to be described later, and their locations are not limited.

[0062] The basic configuration of the offshore hydrogen charging station according to one embodiment of the present invention has been described in detail above.

[0063] However, the offshore hydrogen charging station according to an embodiment of the present invention can be provided in various forms as follows.

[0064] In one embodiment, the marine hydrogen charging station of the present invention may be provided to further include a support structure.

[0065] FIG. 2 is a perspective view showing a support and an auxiliary member according to an embodiment of the present invention.

[0066] Referring to Figure 2, the support body 200 is provided on the upper part of the buoyant body 100, but may be arranged so that its width direction is a second direction perpendicular to a first direction, which is the longitudinal direction of the buoyant body 100 on a horizontal plane, and the width of the support body 200 may be formed wider than the width of the buoyant body 100 based on the second direction.

[0067] This makes it possible to arrange a large number of propellers 111 and support members 113 of the wind power generation unit 110 on the support body 200 at predetermined intervals in the second direction.

[0068] That is, since electricity can be generated through a plurality of propellers 111 in one buoyant body 100, there is an advantage in that energy efficiency can be improved.

[0069] Such a support 200 may be provided in a shape having pillars protruding upward from both ends and the center, and the support member 113 of the above-mentioned wind power generation unit 110 may be provided so as to be supported on the top of the pillars.

[0070] In one embodiment, a ceiling member may be optionally provided connecting the columns above the column structure of the support 200, if desired.

[0071] FIG. 2 shows the state in which the ceiling member is omitted, and FIG. 4 shows the state in which the ceiling member is provided on the upper part of the pillars of the support body 200 in order to ensure an interior working space.

[0072] In this way, when a ceiling member is provided on the upper part of the pillars of the support body 200, the structural stability between the pillars can be further improved, which has the advantage of being able to more firmly support the lower part of the support member 113 of the wind power generation unit 110 described above.

[0073] Referring again to FIG. 2, in one embodiment, the marine hydrogen charging station of the present invention may be provided to further include an auxiliary member 210.

[0074] The auxiliary members 210 may be arranged along the first direction at the front and rear ends of the support body 200, but may be tapered from the upper end of the support body 200 toward the upper portion of the buoyant body 100.

[0075] The auxiliary member 210 is welded to the support body 200 to further improve the structural stability of the support body 200 .

[0076] In addition, in one embodiment, the offshore hydrogen charging station of the present invention may further include a fixing means for fixing one end of the buoyant body 100 to the seabed so that the movement range of the buoyant body 100 at sea is limited within a predetermined range.

[0077] FIG. 3 is a view showing a fixing means according to an embodiment of the present invention.

[0078] Referring to Figures 2 and 3, the fixing means 140 may be provided in the form of a turret or an anchor, and by the offshore hydrogen charging station of the present invention further including the fixing means 140, it is possible to easily maintain the position and movement radius of the buoyant body 100 at sea within a certain range.

[0079] Figure 3 shows an example of an offshore hydrogen charging station equipped with a turret, which is connected to the seabed SB by a mooring line MC, thereby fixing its position at a specific point on the sea.

[0080] In other words, by fixing the position of the turret, the range of movement of the floating hydrogen charging station of the present invention is limited based on the position of the turret.

[0081] As a result, the buoyancy body 100 automatically rotates around the turret in the opposite direction to the wind direction, making it easier to change the direction of the buoyancy body 100 and enabling more stable operation of the offshore hydrogen charging station.

[0082] In one embodiment, the marine hydrogen charging station of the present invention may further include a storage space.

[0083] FIG. 4 is a perspective view showing the receiving space and the seating part according to an embodiment of the present invention.

[0084] Referring to FIG. 4, the accommodation space 150 may be connected to the buoyant body 100 and may be configured to accommodate at least one of a living area, a water electrolysis facility, a compression device, a storage tank, and office equipment.

[0085] For example, the accommodation space 150 may be provided with a water electrolysis facility for producing hydrogen, a storage tank for storing the produced hydrogen, and a compression facility for charging.

[0086] In addition, the offshore hydrogen charging station according to an embodiment of the present invention may further include a seating unit 160 provided on the upper part of the receiving space 150.

[0087] The mounting unit 160 is provided to mount a transport means (described later) for transporting hydrogen produced in the offshore hydrogen charging station of the present invention to an onshore plant, and the transport means may include at least one of a drone and a helicopter.

[0088] In one embodiment, the anchoring unit 160 may be disposed behind the wind power generation unit 110, in which case the buoyant body 100 automatically faces the direction of the wind through weathervaning according to the wind direction.

[0089] As a result, when a transport means such as a drone or helicopter approaches the offshore hydrogen charging station, it can approach the landing unit 160 while holding the wind behind the wind power generation unit 110, allowing for more stable landing.

[0090] In addition, since the transport means moves from the rear of the wind power generation unit 110, it is possible to prevent interference with the flow of wind used for wind power generation, which has the advantage of enabling the acquisition of high-quality wind.

[0091] It should be noted that the marine charging station according to an embodiment of the present invention may be provided so as to further include a self-propelling means (not shown) such as a motor.

[0092] This allows the offshore charging station of the present invention to navigate on its own at sea, and has the advantage of being able to select and move to areas with strong winds, thereby maximizing energy efficiency through wind power generation that utilizes better quality winds.

[0093] Furthermore, by applying the marine hydrogen charging station according to one embodiment of the present invention, it is possible to charge hydrogen into a hydrogen transport means as follows.

[0094] FIG. 5 is a diagram illustrating a method for charging hydrogen into a vehicle using an offshore hydrogen charging station according to an embodiment of the present invention.

[0095] Referring to FIG. 5, the offshore hydrogen charging station of the present invention may be provided with a transfer line connected to a hydrogen storage unit so that hydrogen can be transferred from the hydrogen storage unit by a transfer means 70.

[0096] The transportation means 70 can be provided in the form of a hydrogen-powered ship, a marine drone taxi, an air vehicle, or other marine drone, an airship, a helicopter, or the like.

[0097] The transfer line is provided in the form of a pipe, and hydrogen is transferred from the storage tank along the transfer line to the transfer means 70 by pumping with a high-pressure pump.

[0098] In one embodiment, when a drone-type transport means 70 is used, hydrogen can be filled in an atmospheric pressure container on a small aircraft and airlifted to land, or a transfer line can be connected to a ship or taxi-type drone to supply hydrogen.

[0099] Previously, the method employed was to transport large quantities of pressurized or liquefied hydrogen produced at sea, approximately 50 to 100 km from the coast, by ship, but this had the drawback of being time-consuming and costly.

[0100] However, by using a drone-type transport means 70, it is possible to fill an atmospheric pressure container with hydrogen in a small aircraft and transport it to land by air, which has the advantage of making it possible to transport small amounts of atmospheric pressure hydrogen economically.

[0101] In particular, because hydrogen is lighter than air, it has the advantage of being able to supply green hydrogen at a much lower cost than conventional transportation methods when atmospheric pressure hydrogen, which has buoyancy in the air, is used to supply hydrogen to nearby land-based hydrogen charging stations using sea breezes without the need for any significant energy.

[0102] In addition, in one embodiment, the transfer line may be provided in various forms other than the above examples, and may be provided in the form of a piping line installed along the seabed and connected to land, so that hydrogen can be directly transferred to an onshore plant.

[0103] The offshore hydrogen charging station according to one embodiment of the present invention, which has been described in detail above, may be manufactured through the following steps.

[0104] FIG. 6 is a diagram illustrating a method for manufacturing a marine hydrogen charging station according to an embodiment of the present invention.

[0105] Referring to FIGS. 2 and 6, first, a step of producing the buoyant body 100 in the dock and a step of producing the support body 200 in the dock are performed.

[0106] Next, the buoyant body 100 is arranged in a first direction as a longitudinal direction, and the support body 200 is coupled to the upper part of the buoyant body 100 in a second direction as a longitudinal direction perpendicular to the first direction.

[0107] Through this, the buoyant body 100 and the support body 200 can be assembled in the dock so that the assembly directions are perpendicular to each other based on the longitudinal direction after they are fabricated in the dock.

[0108] In other words, there is an advantage in that the existing dock can be utilized without the need to provide a new dock that is large in both width and height.

[0109] In this case, when using a floating dock, seawater is poured into the ballast tank provided inside the buoyant body 100 to sink the buoyant body 100, and then the support body 200 is floated on the seawater surface and transported to the top of the buoyant body 100, and then the support body 200 can be attached to the buoyant body 100.

[0110] Thereafter, a step is performed in which auxiliary members 210 are provided at the front and rear ends of the support body 200 so as to taper from the upper end of the support body 200 toward the top of the buoyant body 100 along the first direction, and the auxiliary members 210 are welded to the support body 200.

[0111] Referring to the drawings, the support 200 may be provided in a shape having pillars protruding upward from both ends and the center, and in this case, a ceiling member connecting the pillars may be optionally provided.

[0112] FIG. 2 shows the state in which the ceiling member is omitted, and FIG. 4 shows the state in which the ceiling member is provided on the upper part of the pillars of the support body 200 in order to ensure an interior working space.

[0113] In this way, when a ceiling member is installed, the structural stability between the pillars can be further improved, which has the advantage of being able to more firmly support the lower part of the wind power generation unit 110 installed on the top of the support body 200.

[0114] Referring again to FIGS. 2 and 6, a step of providing a wind power generating unit 110 for generating electricity using wind power on the upper part of the support 200 is performed.

[0115] At this stage, a support member 113 is provided on top of the support 200, and a propeller 111 is provided on top of the support member 113. Then, a generator 112 may be connected to the propeller 111 so that electricity can be generated by the operation of the propeller 111.

[0116] In this case, the generator 112 may be provided inside the support member 113 or inside the support 200, and the installation position is not limited.

[0117] Thereafter, a step of providing an electrolysis unit for electrolyzing seawater using electricity generated by the wind power generation unit 110 inside the buoyant body 100 is performed.

[0118] Next, a step of providing a hydrogen storage unit for storing hydrogen generated from the electrolysis unit inside the buoyant body 100 is performed.

[0119] The electrolysis unit and the hydrogen storage unit may be provided on or inside the buoyant body 100, or may be provided inside the support 200, and there is no limitation on their locations.

[0120] Furthermore, if necessary, a fixing means 140 for fixing one end of the buoyant body 100 to the seabed, a storage space 150 for accommodating a hydrogen storage tank and compression equipment, and a landing section 160 for safely accommodating a hydrogen transfer means may be further provided.

[0121] The structure and shape of the offshore hydrogen charging station of the present invention are not limited to those described above, and various modifications and variations may be possible in the technical field to which the present invention pertains.

[0122] From the detailed description so far, the use of the offshore hydrogen charging station according to one embodiment of the present invention can have the following advantages.

[0123] After the buoyant body and the support body are fabricated in the dock, they can be assembled so that the assembly directions are perpendicular to each other based on the longitudinal direction, which makes it easy to fabricate the support body that is arranged perpendicular to the longitudinal direction of the buoyant body.

[0124] This makes it possible to install a large number of propellers and generators for wind power generation along the longitudinal direction of the support, which has the effect of significantly improving energy efficiency.

[0125] In addition, since the support member that supports the lower part of the propeller is provided in the shape of an airplane's vertical tail, the direction of the buoyancy body can be automatically controlled without a yawing system, and good quality wind can be utilized.

[0126] Furthermore, since one side of the buoyant body can be fixed at sea using a fixing means, the buoyant body will automatically rotate in the opposite direction to the wind, which has the advantage of making it even easier to change the direction of the buoyant body.

[0127] The embodiments of the present invention disclosed in this specification and the drawings are merely specific examples presented to easily explain the technical contents of the present invention and to aid in understanding the present invention, and are not intended to limit the scope of the present invention.

[0128] Therefore, the scope of the present invention should be interpreted as including not only the embodiments disclosed herein but also all modifications and variations derived from the technical concept of the present invention.

Claims

1. a wind power generation unit that is provided on a floating body floating on the sea and that generates electricity using wind power; an electrolysis unit that electrolyzes seawater using the electricity produced by the wind power generation unit; a hydrogen storage unit that stores hydrogen generated from the electrolysis unit, The wind power generation unit includes: a propeller provided on the upper part of the buoyant body; a generator coupled to the propeller to produce electricity; a support member that supports a lower portion of the propeller at an upper portion of the buoyant body; Including, the support member extends upward from the buoyant body, the width of the support member in a longitudinal direction in a plan view is greater than the width of the support member in a lateral direction, and the longitudinal direction of the support member in a plan view is formed along a first direction which is the longitudinal direction of the buoyant body, The support member is formed in a shape in which the width in the longitudinal direction increases from the top to the bottom, and supports the propeller so as to rotate around an axis along the first direction.

2. 2. The offshore hydrogen charging station according to claim 1, further comprising a fixing means for fixing one end of the buoyant body to the seabed surface so that the range of movement of the buoyant body at sea is limited within a predetermined range.

3. 2. The marine hydrogen charging station according to claim 1, further comprising an accommodation space connected to the buoyant body and capable of accommodating at least one of a living area, a water electrolysis facility, a compression device, a storage tank, and office equipment.

4. The offshore hydrogen charging station according to claim 3 , further comprising a landing area provided above the accommodation space, where a transport means including at least one of a drone and a helicopter can safely arrive.

5. 2. The marine hydrogen charging station of claim 1, further comprising a support body provided on the upper part of the buoyant body and having a width direction in a second direction perpendicular to a first direction, which is the longitudinal direction of the buoyant body on a horizontal plane, and the width of the support body is formed wider than the width of the buoyant body based on the second direction.

6. The floating hydrogen charging station according to claim 5, wherein a plurality of the propellers and support members of the wind power generation unit are arranged on the support body at predetermined intervals in the second direction.

7. 6. The marine hydrogen charging station according to claim 5, further comprising auxiliary members arranged at the front and rear ends of the support along the first direction, and tapered from the upper end of the support toward the top of the buoyant body.

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