Floating solar power generation device and floating solar power generation system

Abstract

To provide a floating solar power generation device and a floating solar power generation system which can be easily moved, assembled, and disassembled. [Solution] The floating solar power generation device 10 comprises a floating part 11 capable of floating in the air, a solar cell module 12 attached to the floating part 11, and a rope-like adjustment member 42 connected to the floating part 11 and adjusting the distance between the floating part 11 and the ground.

Description

[Technical field]

[0001] The present disclosure relates to a floating solar power generation device and a floating solar power generation system including the floating solar power generation device. [Background technology]

[0002] JP 2021-141694 A (Patent Document 1) discloses a solar power generation device in which a solar power generation panel is installed on a balloon. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-141694 A Summary of the Invention [Problem to be solved by the invention]

[0004] The balloon-type solar power generation device disclosed in JP 2021-141694 A (Patent Document 1) has a structure in which a balloon is held in the air by a plurality of holding wires stretched between a pair of support structures installed opposite each other. As such, JP 2021-141694 A (Patent Document 1) is based on the premise of having a structure integrated with the ground, and is therefore not suitable for moving the device to assemble and disassemble it.

[0005] An object of the present disclosure is to provide a floating solar power generation device and a floating solar power generation system that are easy to move, assemble, and disassemble. [Means for solving the problem]

[0006] The floating solar power generation device disclosed herein comprises a floating part capable of floating in the air, a solar cell module attached to the floating part, and a rope-like adjustment member connected to the floating part for adjusting the distance between the floating part and the ground. Effect of the Invention

[0007] According to the present disclosure, the device can be easily moved, assembled, and disassembled thanks to its simple structure including a floating part, a solar cell module, and a rope-like adjustment member connected to the floating part for adjusting the distance between the floating part and the ground. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a block diagram showing a floating solar power generation system according to a first embodiment. [Diagram 2] 1 is a diagram showing a floating solar power generation system according to a first embodiment. [Diagram 3] 1 is a diagram showing a floating solar power generation device according to a first embodiment. [Figure 4] FIG. 11 is a diagram showing a floating solar power generation device according to a second embodiment. [Diagram 5] FIG. 11 is a diagram showing a floating solar power generation device according to a third embodiment. [Figure 6] FIG. 11 is a diagram showing a floating solar power generation device according to a fourth embodiment. [Figure 7] FIG. 11 is a diagram showing a floating solar power generation device according to a fifth embodiment. [Figure 8] FIG. 13 is a diagram showing a floating solar power generation device according to a sixth embodiment. [Figure 9] FIG. 13 is a diagram showing a floating solar power generation device according to a seventh embodiment. [Figure 10] FIG. 13 is a diagram showing a floating portion according to an eighth embodiment. [Figure 11] 13 is a diagram showing a rear surface of a floating portion according to an eighth embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the drawings. In the embodiments described below, when numbers, amounts, etc. are mentioned, the scope of the present disclosure is not necessarily limited to the numbers, amounts, etc., unless otherwise specified. The same reference numbers are given to the same parts and corresponding parts, and duplicate descriptions may not be repeated. It is intended from the beginning that the configurations in the embodiments will be used in appropriate combination.

[0010] [Embodiment 1] Fig. 1 is a block diagram showing a floating solar power generation system 100 according to embodiment 1. Fig. 2 is a diagram showing the floating solar power generation system 100 according to embodiment 1. Fig. 3 is a diagram showing a floating solar power generation device 10 according to embodiment 1.

[0011] As shown in FIG. 1, the floating solar power generation system 100 includes a floating solar power generation device 10, a current collection box 21, a connector 22, a DC connection box 23, a power conditioner 24, a winding device 41, an adjustment member 42, and a control device 30.

[0012] The floating solar power generation device 10 includes a floating part 11, a solar cell module 12, and an adjustment member 42. As shown in Figs. 2 and 3, the floating part 11 is a structure capable of floating in the air. The floating part 11 includes a plurality of balloons 110. A gas lighter than air, such as helium gas, is sealed inside the plurality of balloons 110. The floating part 11 forms a substantially rectangular parallelepiped shape by arranging the plurality of balloons 110 adjacent to each other.

[0013] The solar cell module 12 includes a perovskite solar cell. Compared to silicon-based solar cells, perovskite solar cells are flexible, resistant to bending and warping, and lightweight. The solar cell module 12 is attached to the floating part 11 at a position where it can receive sunlight. In this manner, the solar cell module 12 has a structure that is less susceptible to the effects of wind and easy to float. Note that silicon-based solar cells may be used for the solar cell module 12 as long as it can float together with the floating part 11.

[0014] The adjustment member 42 is a rope-like member that is connected to the floating part 11 and adjusts the distance between the floating part 11 and the ground. Specifically, the adjustment member 42 may be any member such as a chain or wire that can adjust the distance between the floating part 11 and the ground. Four adjustment members 42 are arranged so as to hang down from the four corners of the floating part 11, which has a substantially rectangular parallelepiped shape. The number of adjustment members 42 may be increased or decreased as appropriate, such as three, two, or five.

[0015] The current collecting box 21 is a protective box that collects cables (not shown) drawn from the solar cell modules 12. The current collecting box 21 has a function of collecting DC current passing through cables drawn from the multiple solar cell modules 12. The connector 22 connects the current collecting box 21 to a cable 25. The cable 25 supplies DC power generated by the floating solar power generation device 10 (solar cell module 12). Note that a current collecting connector, a current collecting terminal box, etc. may be installed instead of the current collecting box 21. Two or more devices having such a current collecting function may be installed for one floating portion 11.

[0016] 2, the movement of the adjustment member 42 located at the front side among the four adjustment members 42 and the cable 25 is restricted by the ring member 26. The ring member 26 prevents the cable 25 from moving due to the influence of wind, etc.

[0017] The DC junction box 23 collects the DC power generated by the solar cell modules 12 and supplies it to the power conditioner 24. The DC junction box 23 is also called a terminal box or a current collector box. The DC junction box 23 may be omitted. The power conditioner 24 functions as a power conversion device that converts the DC power generated by the solar cell modules 12 and transmitted from the cable 25 into AC power. The AC power converted by the power conditioner 24 is supplied to loads such as various electrical devices. A DC / DC converter may be used as the power conversion device. In such a case, a storage battery may be connected to the DC / DC converter.

[0018] The winding device 41 rotates the rotating shaft in a forward or reverse direction by driving a motor disposed inside. The winding device 41 is configured to change the floating height of the flotation part 11 by winding the adjustment member 42. For example, the winding device 41 is configured to change the length of the adjustment member 42 so that the distance between the flotation part 11 and the ground becomes closer when the rotating shaft rotates in a forward direction, and the distance between the flotation part 11 and the ground becomes farther when the rotating shaft rotates in a reverse direction. As shown in FIG. 2, the winding devices 41 are disposed at four corners of a base 45 placed on the ground.

[0019] The control device 30 includes a calculation device 31, a memory 32, and a storage device 33. These components are connected via a bus.

[0020] The arithmetic device 31 is a computing entity (computer) that executes a predetermined process. The arithmetic device 31 is configured with a processor such as a central processing unit (CPU), a micro-processing unit (MPU), a tensor processing unit (TPU), or a graphics processing unit (GPU). The arithmetic device 31 can also be read as a processing circuit that executes a predetermined process. The arithmetic device 31 may be configured with a programmable logic controller (PLC), which is a general-purpose sequencer.

[0021] The memory 32 includes a storage area (for example, a working area) for storing program codes or work memories when the arithmetic unit 31 executes various programs.

[0022] The storage device 33 functions as a storage unit that stores various programs or various data executed by the arithmetic device 31. For example, the storage device 33 stores a control program executed by the arithmetic device 31.

[0023] The control device 30 controls the winding device 41 to change the distance between the floating part 11 and the ground (base 45).

[0024] As shown in Figs. 2 and 3, the floating unit 11 has a first surface (XY plane) that spreads in a direction (X-axis direction, Y-axis direction) that intersects the vertical direction (Z-axis direction) by arranging a plurality of balloons 110 adjacent to each other. The solar cell module 12 is arranged on the first surface (XY plane). The first surface is slightly curved in the center in the positive direction of the Z axis. Each of the plurality of balloons 110 has a quadrangular pyramid shape with rounded corners, and the first surface (XY plane) is formed by the bases being adjacent to each other. By forming the first surface (XY plane), sunlight can be received over a wide area.

[0025] The floating solar power generation device 10 includes a floating part 11 capable of floating in the air, a solar cell module 12 attached to the floating part 11, and a rope-like adjustment member 42 connected to the floating part 11 and adjusting the distance between the floating part 11 and the ground. The floating solar power generation device 10 has a simple structure that does not have any structure integral with the ground, and therefore the device can be easily moved, assembled, and disassembled.

[0026] The floating solar power generation device 10 can be used anywhere because it is easy to assemble and disassemble. For example, the floating solar power generation device 10 can generate power immediately in the event of a disaster or an event.

[0027] In the floating solar power generation device 10, by adjusting the length of the adjustment member 42, a space can be formed below the floating part 11 when the floating part 11 is in a floating state during use. This allows the space formed below the floating part 11 to be effectively utilized. For example, the space formed below the floating part 11 can be utilized in various situations such as a sunshade or an evacuation site in the event of a disaster.

[0028] In the floating solar power generation device 10, the floating part 11 is composed of a plurality of balloons 110. This makes it possible to prevent the floating part 11 from falling even if gas leakage occurs from any of the plurality of balloons 110 and the buoyancy weakens.

[0029] The floating solar power generation device 10 can change the angle at which sunlight is received to the optimum angle by adjusting the length of the adjustment member 42 with the winding device 41. When rain, snow, or the like adheres to the surface of the solar cell module 12, the floating solar power generation device 10 can drop the adhered material downward by adjusting the length of the adjustment member 42 with the winding device 41.

[0030] [Embodiment 2] Next, a floating solar power generation device 10A according to a second embodiment will be described. FIG. 4 is a diagram showing the floating solar power generation device 10A according to the second embodiment. In the following embodiments, the cable 25 and the like shown in FIG. 2 may be omitted. In the floating solar power generation device 10A, the shape of the floating part 11A is different from the shape of the floating part 11 in the first embodiment. The floating part 11A has one balloon 110A and has an overall shape that is approximately cylindrical.

[0031] The solar cell module 12 is arranged in a curved state at a position corresponding to the side surface of the approximately cylindrical balloon 110A. Two adjustment members 42 are arranged so as to hang down from positions corresponding to both ends in the Y-axis direction in the floating part 11A. Two winding devices 41 are arranged on the base 45 at positions corresponding to the two adjustment members 42.

[0032] The floating type solar power generation device 10A of the second embodiment can have a simpler structure than the floating type solar power generation device 10 of the first embodiment.

[0033] [Embodiment 3] Next, a floating type solar power generation device 10B according to embodiment 3 will be described. Fig. 5 is a diagram showing the floating type solar power generation device 10B according to embodiment 3. The floating type solar power generation device 10B differs from the floating type solar power generation device 10A according to embodiment 2 in that a rotation mechanism 46 is added to the base 45.

[0034] The rotation mechanism 46 is a mechanism for rotating the two winding devices 41 on the XY plane by a motor (not shown). The driving of the rotation mechanism 46 is controlled by the control device 30. The rotation mechanism 46 moves the adjustment member 42 in accordance with the movement of the winding devices 41, thereby rotating the floating part 11B around a rotation axis extending in the vertical direction.

[0035] The floating solar power generation device 10B of the third embodiment can adjust the angle of the balloon 110B in the XY plane by the operation of the rotation mechanism 46, so that the position of the solar cell module 12 can be changed to an optimal angle for receiving sunlight. Note that the floating solar power generation device 10B can also tilt the balloon 110B to a desired angle for receiving sunlight by adjusting the winding amount of the two winding devices 41.

[0036] [Embodiment 4] Next, a floating solar power generation device 10C according to embodiment 4 will be described. Fig. 6 is a diagram showing the floating solar power generation device 10C according to embodiment 4. The floating solar power generation device 10C differs from the floating solar power generation device 10A according to embodiment 2 in the arrangement of the floating part 11C, the presence of one adjustment member 42, and the presence of one winding device 41.

[0037] The floating solar power generation device 10C floats with the bottom surface of the approximately cylindrical balloon 110C arranged vertically. The solar cell module 12 is arranged on the entire side surface of the balloon 110C. The height of the floating part 11C of the floating solar power generation device 10C is adjusted by winding the adjustment member 42 by the operation of the winding device 41.

[0038] The floating type solar power generation device 10C of the fourth embodiment can have a structure even simpler than the floating type solar power generation device 10A of the second embodiment.

[0039] [Embodiment 5] Next, a floating type solar power generation device 10D according to embodiment 5 will be described. Fig. 7 is a diagram showing the floating type solar power generation device 10D according to embodiment 5. In the floating type solar power generation device 10D, the shape of the floating part 11D is different from the shape of the floating part 11A according to embodiment 2.

[0040] The floating section 11D has four balloons 110D arranged adjacent to each other and extending in the vertical direction. The balloons 110D are arranged adjacent to each other, and thus have a second surface (ZY plane) that extends in the vertical direction (Z-axis direction). The solar cell module 12 is arranged on the second surface (ZY plane). The floating section 11D has a generally rectangular parallelepiped shape, with the joints between the balloons 110D forming valleys.

[0041] By forming the second surface (ZY plane), it is possible to receive sunlight over a wide area. Note that the solar cell module 12 may also be disposed at a position in the positive direction of the X-axis direction opposite to the second surface (ZY plane).

[0042] [Embodiment 6] Next, a floating type solar power generation device 10E according to embodiment 6 will be described. Fig. 8 is a diagram showing the floating type solar power generation device 10E according to embodiment 6. The floating type solar power generation device 10E differs from the floating type solar power generation device 10 according to embodiment 1 in that the shape of the floating part 11E is different and that the winding device 41 is not provided.

[0043] The floating solar power generation device 10E has a configuration in which a floating portion 11E includes a spherical balloon 110E and a curtain-like sheet portion 13 extending downward from the spherical balloon 110E. A solar cell module 12 is disposed on the sheet portion 13. Note that a solar cell module 12 may also be disposed on the surface of the sheet portion 13 in FIG. 8 opposite to the surface on which the solar cell module 12 is disposed.

[0044] The floating solar power generation device 10E has a shape in which two adjustment members 42 extend from both ends of the short side direction of the sheet part 13. The other end of the adjustment member 42 is fixed to a fixing part 47 arranged in place of the winding device 41. The fixing part 47 is preferably configured like a water tank that can be filled with water to act as a weight to facilitate movement. The aforementioned winding device 41 may be used in place of the fixing part 47.

[0045] In the floating solar power generation device 10E, the balloon 110E and the sheet part 13 are configured separately, so that the balloon 110E and the sheet part 13 can be separated for transportation and assembly. The floating solar power generation device 10E can be used in places where the solar cell module 12 cannot be deployed on a flat surface, and can be deployed quickly with a small installation area.

[0046] [Embodiment 7] Next, a floating solar power generation device 10F according to embodiment 7 will be described. Fig. 9 is a diagram showing the floating solar power generation device 10F according to embodiment 7. The floating solar power generation device 10F differs from the floating solar power generation device 10 according to embodiment 1 in that the shape of the floating part 11F is different, the cable winding device 27 is provided, and the base 45 is not provided.

[0047] In the floating solar power generation device 10F, a floating section 11F having a substantially rectangular parallelepiped shape is formed by arranging a plurality of elliptical cylindrical balloons 110F (six balloons 110F) adjacent to each other. A solar cell module 12 attached to a sheet section 13 is arranged on the upper surface (sunlight receiving surface) of the balloons 110F. Pipes 15 are attached to both ends of the sheet section 13 at positions corresponding to the longitudinal direction of the elliptical cylindrical balloons 110F. The presence of the pipes 15 allows the solar cell module 12 attached to the sheet section 13 to spread out evenly.

[0048] The cable winding device 27 is a device for winding up the cable 25 pulled out along the adjustment member 42, and is attached to a position close to any one of the four winding devices 41. When multiple cables 25 are pulled out from the solar cell module 12, multiple cable winding devices 27 may be provided.

[0049] 9, the floating solar power generation device 10F adjusts the length of the adjustment member 42 to form a space above the height of a person below the floating part 11F when the floating part 11F is in the raised state. This allows the floating solar power generation device 10F to effectively utilize the space below the floating part 11F while generating power using the solar cell module 12. For example, the shade cast by the floating part 11F on a sunny day may be used to play sports or other activities.

[0050] The floating solar power generation device 10F may have a structure in which the sheet part 13 is lifted by the balloon 110F, instead of floating the sheet part 13 from below by the balloon 110F. In the case of a structure in which the sheet part 13 is lifted, the shape of the balloon may be another shape, such as a sphere.

[0051] [Embodiment 8] Next, floating portion 11G according to embodiment 8 will be described. Fig. 10 is a diagram showing floating portion 11G according to embodiment 8. Fig. 11 is a diagram showing the back surface of floating portion 11G according to embodiment 8. Floating portion 11G according to embodiment 8 has a different shape from floating portion 11 according to embodiment 1 shown in Figs. 2 and 3.

[0052] The floating portion 11G has a first surface (XY plane) that spreads in a direction (X-axis direction, Y-axis direction) intersecting the vertical direction (Z-axis direction) by arranging multiple balloons 110G each having a semi-spherical shape adjacent to each other. The solar cell module 12 is arranged on the first surface (XY plane). Although the solar cell module 12 is divided into four, it may be further divided into multiple parts as in the first embodiment, and the number of divisions can be changed as appropriate. The number of balloons 110G can also be changed as appropriate.

[0053] The balloons 110G may have any shape as long as the floating portion 11G is configured to have a substantially rectangular parallelepiped shape by arranging the balloons 110G adjacent to each other. It is sufficient that the floating portion 11G has at least a first surface that receives sunlight, on which the solar cell module 12 can be arranged.

[0054] [Aspects] (1) The floating solar power generation device 10 disclosed herein comprises a floating part 11 capable of floating in the air, a solar cell module 12 attached to the floating part 11, and a rope-like adjustment member 42 connected to the floating part 11 for adjusting the distance between the floating part 11 and the ground.

[0055] According to the floating solar power generation device 10 disclosed herein, the device can be easily moved, assembled, and disassembled thanks to its simple structure including a floating part 11, a solar cell module 12, and a rope-like adjustment member 42 connected to the floating part 11 and adjusting the distance between the floating part 11 and the ground.

[0056] (2) In the floating solar power generation device 10 of (1), the floating portion 11 includes at least one balloon 110 that floats by sealing a gas that is lighter than air inside.

[0057] According to the floating solar power generation device 10 of the present disclosure, even if gas leakage occurs from any of the multiple balloons 110 and the buoyancy weakens, the floating part 11 can be prevented from falling.

[0058] (3) In the floating solar power generation device 10 of (1) or (2), the solar cell module 12 includes a flexible perovskite solar cell.

[0059] According to the floating solar power generation device 10 of the present disclosure, the solar cell module 12 includes a flexible perovskite solar cell, and therefore is resistant to bending and warping, and is lightweight, so is less susceptible to the effects of wind and easier to float.

[0060] (4) The floating type solar power generation device 10 according to any one of (1) to (3) further includes a winding device 41 configured to change the floating height of the floating part 11 by winding up the adjustment member 42.

[0061] According to the floating type solar power generation device 10 of the present disclosure, the floating height of the floating part 11 can be easily changed by the winding device 41 winding the adjustment member 42.

[0062] (5) In any one of the floating solar power generation devices 10 of (1) to (4), at least one balloon 110 is disposed adjacent to each other to form a substantially rectangular parallelepiped shape having a first surface extending in a direction intersecting the vertical direction. The solar cell module 12 is disposed on the first surface.

[0063] According to the floating solar power generation device 10 of the present disclosure, the solar cell module 12 is disposed on the first surface, so that sunlight can be received over a wide area.

[0064] (6) In the floating solar power generation device 10D of any one of (1) to (4), at least one balloon 110D is arranged adjacent to each other to form a substantially rectangular parallelepiped shape having a second surface extending in the vertical direction. The solar cell module 12 is arranged on the second surface.

[0065] According to the floating solar power generation device 10D of the present disclosure, the solar cell module 12 is disposed on the second surface, so that sunlight can be received over a wide area.

[0066] (7) In any one of the floating solar power generation devices 10A to 10C in (1) to (4), at least one of the balloons 110A to 110C has a substantially cylindrical shape. The solar cell module 12 is disposed on a side surface of the substantially cylindrical shape.

[0067] According to the floating solar power generation devices 10A to 10C of the present disclosure, the solar cell modules 12 are arranged on the side surfaces of the substantially cylindrical shape, so that sunlight can be received over a wide area.

[0068] (8) In the floating solar power generation device 10E of any one of (1) to (4), the floating portion 11E includes a curtain-shaped sheet portion 13 extending downward from at least one balloon 110E. The solar cell module 12 is disposed on the sheet portion 13.

[0069] According to the floating solar power generation device 10E of the present disclosure, the floating part 11E is configured with the balloon 110E and the sheet part 13 as separate bodies, and therefore the balloon 110E and the sheet part 13 can be moved and assembled separately.

[0070] (9) The floating type solar power generation device 10B according to any one of (1) to (8) further includes a rotation mechanism 46 that moves the adjustment member 42 to rotate the floating part 11C about a rotation axis extending in the vertical direction.

[0071] According to the floating solar power generation device 10B of the present disclosure, the position of the solar cell module 12 can be changed to an optimal angle for receiving sunlight.

[0072] (10) The floating solar power generation system 100 of the present disclosure includes a floating solar power generation device 10 as defined in any one of (1) to (9), a cable 25 that supplies DC power generated by the floating solar power generation device 10, and a power conversion device (power conditioner 24) that converts the DC power supplied from the cable 25.

[0073] According to the floating solar power generation system 100 of the present disclosure, the DC power generated by the floating solar power generation device 10 can be converted.

[0074] [Variations] In the floating portion 11, the balloon 110 has a structure that generates buoyancy, and may have any shape as long as the structure allows the solar cell module 12 to be placed thereon.

[0075] The floating portion 11E may be something other than the balloon 110E filled with gas, as long as the balloon 110E and the sheet portion 13 are separate structures. For example, a machine capable of floating in the air, such as a drone, may be used instead of the balloon 110E.

[0076] The control device 30 may control the operation of the winding and storage 41, etc., so that the angle is automatically set to an appropriate angle depending on the direction of the sun. For example, by inputting the installation point of the floating solar power generation system 100 (inputting the latitude and longitude), the control device 30 may control the angle of the floating solar power generation device 10 to automatically change according to the installation point. This can increase the power generation efficiency of the solar cell module 12.

[0077] The floating solar power generation system 100 may include a sensor capable of measuring wind direction and speed. When the sensor detects a strong wind exceeding a predetermined set value, the control device 30 may automatically operate the winding device 41 to wind up the adjustment member 42. This allows the floating solar power generation system 10 to be stored in a safe state.

[0078] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present disclosure is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0079] 10, 10A, 10B, 10C, 10D, 10E, 10F Floating solar power generation device, 11, 11A, 11B, 11C, 11D, 11E, 11F, 11G Floating part, 12 Solar cell module, 13 Sheet part, 15 Pipe, 21 Current collector box, 22 Connector, 23 DC connection box, 24 Power conditioner, 25 Cable, 26 Ring member, 27 Cable winding device, 30 Control device, 31 Arithmetic device, 32 Memory, 33 Storage device, 41 Winding device, 42 Adjustment member, 45 Base, 46 Rotation mechanism, 47 Fixed part, 100 Floating solar power generation system, 110, 110A, 110B, 110C, 110D, 110E, 110F, 110G Balloon.

Claims

1. A floating part capable of floating in the air; A solar cell module attached to the floating portion; A rope-like adjustment member is connected to the floating part and adjusts the distance between the floating part and the ground, The floating unit includes a plurality of balloons that float by sealing a gas lighter than air therein, Each of the plurality of balloons has a shape having a flat surface, The plurality of balloons are arranged such that the planar portions are arranged in a lattice pattern to form a first surface extending in a direction intersecting the vertical direction, The solar cell module is disposed on the first surface, Each of the plurality of balloons has a quadrangular pyramid shape, A floating solar power generation device, wherein the planar portion is the base of a quadrangular pyramid.

2. A floating part capable of floating in the air; A solar cell module attached to the floating portion; A rope-like adjustment member is connected to the floating part and adjusts the distance between the floating part and the ground, The floating unit includes a plurality of balloons that float by sealing a gas lighter than air therein, Each of the plurality of balloons has a shape having a flat surface, The plurality of balloons are arranged such that the planar portions are arranged in a lattice pattern to form a first surface extending in a direction intersecting the vertical direction, The solar cell module is disposed on the first surface, each of the plurality of balloons is hemispherical in shape; A floating solar power generation device, wherein the planar portion is the bottom surface of a hemisphere.

3. A floating part capable of floating in the air; A solar cell module attached to the floating portion; A rope-like adjustment member is connected to the floating part and adjusts the distance between the floating part and the ground, The adjustment member is composed of only two members, a first adjustment member and a second adjustment member, The floating portion is formed of a balloon having a substantially rectangular parallelepiped shape that floats by sealing a gas lighter than air inside the balloon, The substantially rectangular parallelepiped balloon includes a first main surface and a second main surface that face each other and extend in a vertical direction, and four side surfaces, The first adjustment member and the second adjustment member are connected to a lower surface of the four side surfaces in a vertical direction, A floating solar power generation device, the solar cell module being disposed on the first main surface.

4. The floating solar power generation device according to claim 1 , wherein the solar cell module includes a flexible perovskite solar cell.

5. The floating solar power generation device according to any one of claims 1 to 3, further comprising a winding device configured to change the floating height of the floating part by winding up the adjustment member.

6. The floating solar power generation device according to claim 1 , further comprising a rotation mechanism that rotates the floating part around a rotation axis extending in a vertical direction by moving the adjustment member.

7. A floating solar power generation device according to any one of claims 1 to 3; A cable for transmitting DC power generated by the floating solar power generation device; a power converter that converts the DC power supplied from the cable; a winding device configured to change the floating height of the floating portion by winding the adjustment member; A control device; A sensor capable of measuring wind speed, The control device, when the sensor detects strong wind exceeding a predetermined set value, operates the winding device and winds up the adjustment member to put the floating section in a safe state, in a floating solar power generation system.

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