Swinging pendulum type wave power generation device and rotation transmission device

Abstract

To improve power generation efficiency in a swinging pendulum type wave power generation device.SOLUTION: A wave power generation device comprises: a floating body part 10; a plurality of rotational shaft parts 32, 42 supported on the floating body part, and having different axial directions; a common pendulum part 50 that performs pendulum motion around an axis of each of the rotational shaft parts; and power generation units 60, 70 that generate power by the pendulum motion around the axis of each rotational shaft part in the common pendulum part. This makes it possible to improve power generation efficiency using a wave force in the power generation units.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a wave power generation device and a rotational transmission device that generate electricity by utilizing the power of waves (or ocean waves).

Background Art

[0002] Conventionally, a swinging pendulum type wave power generation device that generates electricity by the swinging motion (pendulum motion) of a pendulum part that swings around the axis of a rotating shaft part supported by a floating body part is known. In such a swinging pendulum type wave power generation device, the floating body part sways due to the movement of waves, causing the pendulum part to perform a pendulum motion, and electricity is generated from the pendulum motion. Examples of methods for generating electricity from the pendulum motion of the pendulum part include a method of transmitting the pendulum motion of the pendulum part to a ratchet wheel via a ratchet to generate electricity (Patent Document 1), a method of generating electricity using a hydraulic motor from the pendulum motion of the pendulum part (Patent Document 2), a method of generating electricity by electromagnetic induction from the pendulum motion of the pendulum part (Patent Document 3), and the like are known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in a conventional swinging pendulum type wave power generation device, depending on the posture and direction of the floating body part with respect to the movement of waves, the pendulum part may not be able to perform a pendulum motion efficiently, and the power generation efficiency may decrease.

Means for Solving the Problems

[0005] In order to solve the above-described problems, the present invention provides a wave power generation device, comprising: a floating body; a plurality of rotating shaft portions supported by the floating body and having different axial directions; a common pendulum portion that performs pendulum motion around the axis of each of the plurality of rotating shaft portions; and a power generation portion that generates power by the pendulum motion around the axis of each rotating shaft portion in the common pendulum portion.

Effect of the Invention

[0006] According to the present invention, it is possible to improve the power generation efficiency in a rocking pendulum type wave power generation device.

Brief Description of the Drawings

[0007]

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Embodiments for Carrying Out the Invention

[0008] Hereinafter, embodiments of the wave power generation device according to the present invention will be described with reference to the drawings. In the following description, the case where the wave power generation device is used in the ocean (offshore) will be taken as an example for explanation. However, as long as there are fluid waves or swells, it may be used not only in the ocean (offshore), but also on the water surface of rivers, lakes, etc., along the coast, on the fluid stored in artificial objects such as pools, etc.

[0009] 〔Embodiment 1〕 First, an embodiment of the wave power generation device according to the present invention (hereinafter, this embodiment will be referred to as "Embodiment 1") will be described. FIG. 1 is an external perspective view of the wave power generation device in Embodiment 1. FIG. 2 is a perspective view showing the internal structure of the wave power generation device in Embodiment 1. FIG. 3 is a vertical sectional view of the wave power generation device in Embodiment 1. The wave power generation device 1 of Embodiment 1 mainly includes a device main body part 2 and a floating body part 10.

[0010] The floating body part 10 includes a case 11 which is a hollow spherical housing and a toroidal floating ring part 12. The floating body part 10 gives buoyancy to the wave power generation device 1 at sea and is floated on the sea surface. The device main body part 2 is arranged in the internal space of the case 11. The shape of the case 11 is not particularly limited, and it may be rectangular, oval, or other shapes.

[0011] The case 11 is composed of an upper case part 11a that constitutes the upper hemisphere part and a lower case part 11b that constitutes the lower hemisphere part. The upper case part 11a is configured to be detachable from the lower case part 11b. The engaging part between the upper case part 11a and the lower case part 11b is sealed by a seal member 13 to prevent seawater, rainwater, or foreign substances from entering the inside of the case 11. The case 11 has a buoyancy function of giving buoyancy to the wave power generation device 1 at sea.

[0012] At least the upper case part 11a of the case 11 is a transparent member (light transmissive member), and light can be transmitted from the inside of the case 11 to the outside or from the outside to the inside of the case 11. Thereby, for example, it is possible to transmit and emit the light from the light emitting part provided in the device main body part 2 inside the case 11 to the outside, or to irradiate the photovoltaic part (light power generation part) provided in the device main body part 2 inside the case 11 with external light to generate electricity.

[0013] The case 11 can be made of a resin material having flame retardancy such as transparent hard polyvinyl chloride. Further, the case 11 can also be made of a metal material such as stainless steel, aluminum, or an aluminum alloy. When it is made of a metal material, it is difficult to ensure transparency, but since it reflects electromagnetic waves, it is likely to be captured by a radar or the like, which is beneficial in preventing danger.

[0014] The floating ring portion 12 is attached to the case 11 such that the inner peripheral surface of the floating ring portion 12 follows the outer peripheral surface of the case 11 (near the engagement portion between the upper case portion 11a and the lower case portion 11b). The floating ring portion 12 is a flexible bag-shaped member filled with a fluid such as air or gas inside, and together with the case 11, it has a buoyancy function of imparting buoyancy to the wave power generation device 1 on the sea. Further, the floating ring portion 12 has a protection function for protecting the case 11 or the device main body portion 2 inside the case 11 from contact with external objects (for example, garbage or ships floating on the sea). In terms of the protection function, it is preferable that the floating ring portion 12 is flexible enough to absorb the impact caused by contact with external objects.

[0015] In the wave power generation device 1 of the first embodiment, since the floating ring portion 12 floats on the sea surface (water surface), the lower case portion 11b of the case 11 is located below the sea surface (underwater), and the upper case portion 11a is located above the sea surface, and it is arranged on the sea surface. In addition, in order to stabilize this posture, a weight may be provided on the lower case portion 11b.

[0016] The floating ring portion 12 is not an essential component, but by providing the floating ring portion 12 as a wave receiving portion, when the inclination of the sea surface changes due to the movement of waves, the posture of the floating ring portion 12 can be changed sensitively following the change in the inclination of the sea surface. Therefore, the posture of the case 11 to which the floating ring portion 12 is attached can be efficiently changed by the change in the inclination of the sea surface due to the movement of waves, and the power generation efficiency can be improved.

[0017] Figure 4 is an external perspective view of the device main body portion 2 as seen from above. Figure 5 is an external perspective view of the device main body portion 2 as seen from below. FIG. 6 is a plan view of the apparatus main body 2. FIG. 7 is a front view of the apparatus main body 2. FIG. 8 is a side view of the apparatus main body 2. FIG. 9 is a horizontal cross-sectional view showing the cross section taken along line B-B in FIG. 7. FIG. 10 is a vertical cross-sectional view showing the cross section taken along line C-C in FIG. 8.

[0018] The apparatus main body 2 mainly includes a first swing mechanism unit 30, a second swing mechanism unit 40, a pendulum unit 50, a first power generation mechanism unit 60, a second power generation mechanism unit 70, and a light emitting unit 80. The apparatus main body 2 is supported by the case 11 with the attachment portions 31, 31 (to be described later) of the first swing mechanism unit 30 fixed to the inner wall surface of the case 11, specifically, the inner wall surface of the engagement portion between the upper case portion 11a and the lower case portion 11b. Thereby, the apparatus main body 2 changes its posture and moves integrally with the posture change and movement of the case 11.

[0019] The first swing mechanism unit 30 mainly includes two attachment portions 31, 31 fixedly supported on the inner wall surface of the case 11, two first rotating shafts 32, 32 which are rotating shaft portions extending from the two attachment portions 31, 31, and a frame 33 rotatably supported with respect to the two first rotating shafts 32, 32. Further, the first swing mechanism unit 30 is also provided with a transmission mechanism unit 34 for transmitting the rotational force (swing force) of the frame 33 about the axis of the first rotating shaft 32 to the first power generation mechanism unit 60 (to be described later).

[0020] The two attachment portions 31, 31 are fixedly supported on the inner wall surface of the case 11 at positions facing each other near the engagement portion between the upper case portion 11a and the lower case portion 11b in the spherical case 11. The two first rotating shafts 32, 32 are arranged coaxially with each other, and one end of each first rotating shaft 32, 32 is fixedly supported by each attachment portion 31, 31, respectively.

[0021] The frame 33 is composed of two first frame members 33a, 33a extending in a direction orthogonal to the first rotation axes 32, 32 and facing each other, and two second frame members 33b, 33b extending in a direction parallel to the first rotation axes 32, 32 and facing each other. The frame 33 is a frame member that connects the ends of the respective frame members 33a, 33b to each other to form a rectangular shape. Bearing portions 35, 35 are provided at the central positions in the longitudinal directions of the first frame members 33a, 33a, respectively. The frame 33 is rotatably supported about the axes of the respective first rotation axes 32, 32 by the bearing portions 35, 35.

[0022] The transmission mechanism portion 34 includes a base member 34a, an input pulley 34b, an output pulley 34c, and a transmission belt 34d.

[0023] The base member 34a is fixedly supported on one of the first frame members 33a, 33a that constitute the frame 33. Therefore, the base member 34a is rotatably supported about the axes of the first rotation axes 32, 32 via the frame 33. The input pulley 34b is fixedly arranged on one of the two first rotation axes 32 of the two first rotation axes 32, 32. The output pulley 34c is fixed on an output shaft 36 that outputs a rotational force (oscillating force) to a first power generation mechanism portion 60 described later. The output shaft 36 is rotatably supported by a bearing portion 37 provided on the base member 34a. The transmission belt 34d is stretched between the input pulley 34b and the output pulley 34c, and transmits the rotational force (oscillating force) of the input pulley 34b to the output pulley 34c.

[0024] When the frame 33 rotates (oscillates) about the axes of the first rotation axes 32, 32 in the first swing mechanism portion 30, the input pulley 34b fixed on the first rotation axes 32, 32 rotates relative to the frame 33 and the base member 34a fixed thereto. The rotational force (oscillating force) of this input pulley 34b is transmitted to the output pulley 34c via the transmission belt 34d, the output shaft 36 rotates (oscillates), and a rotational force (oscillating force) is output to the first power generation mechanism portion 60.

[0025] The second swing mechanism part 40 mainly includes two connecting parts 41, 41 fixedly supported on the frame 33 of the first swing mechanism part 30, two second rotating shafts 42, 42 which are rotating shaft parts extending from the two connecting parts 41, 41, and a frame body 43 rotatably supported with respect to the two second rotating shafts 42, 42.

[0026] The two connecting parts 41, 41 are respectively fixedly supported on the inner surfaces of the second frame members 33b, 33b of the frame 33 of the first swing mechanism part 30. The two second rotating shafts 42, 42 are arranged coaxially with each other, and one end of each second rotating shaft 42, 42 is fixedly supported on each connecting part 41, 41 respectively.

[0027] The frame body 43 is composed of two first frame plates 43a, 43a arranged face to face so as to be orthogonal to the second rotating shafts 42, 42, and two second frame plates 43b, 43b arranged face to face so as to be parallel to the second rotating shafts 42, 42. The frame body 43 is a hollow box-shaped member that connects the ends of the respective frame plates 43a, 43b to each other. Bearing parts 45, 45 are respectively provided at the central positions in the longitudinal directions of the first frame plates 43a, 43a. The frame body 43 is rotatably supported around the axes of the second rotating shafts 42, 42 by the bearing parts 45, 45.

[0028] Between the second frame plates 43b, 43b constituting the frame body 43, a second power generation rotating shaft 72 of a second power generation mechanism part 70 described later is rotatably supported via bearing parts 47, 47. When the frame body 43 rotates (swings) around the axes of the second rotating shafts 42, 42 in the second swing mechanism part 40, the second power generation rotating shaft 72 of the second power generation mechanism part 70 supported by the frame body 43 relatively rotates (swings) around the axes of the second rotating shafts 42, 42. Although details will be described later, a rotational force (swinging force) is output to the second power generation mechanism part 70 due to the relative rotation of the second power generation rotating shaft 72 of the second power generation mechanism part 70 with respect to one rotating shaft 42 that functions as an output shaft.

[0029] The pendulum part 50 is composed of a pendulum weight 51 and a plurality of support rods 52. The pendulum weight 51 is configured such that a disk-shaped main weight part 51a and one or more disk-shaped auxiliary weight parts 51b have their central axes coaxial with each other. The auxiliary weight part 51b is detachably attached onto the main weight part 51a. By adjusting the number of attached auxiliary weight parts 51b, the weight of the pendulum part 50 can be adjusted.

[0030] The shape of the pendulum weight 51 is not particularly limited. However, in the configuration where the pendulum part 50 performs pendulum motion around two axes orthogonal to each other as in the first embodiment, it is preferable that the pendulum weight 51 has a shape without weight bias. Also, as in the first embodiment, when the internal space of the spherical case 11 is configured such that the pendulum weight 51 swings near the inner wall surface of the case 11 (i.e.), in order to make the length of the pendulum (the length of the support rod 52) longer, it is preferable that it is disk-shaped.

[0031] The main weight part 51a of the pendulum weight 51 is fixedly supported on the frame body 43 of the second swing mechanism part 40 by a plurality (four in the illustrated example) of support rods 52. Specifically, the upper ends of two support rods 52 each are fixed to the two first frame plates 43a, 43a that constitute the frame body 43, and the lower ends of each support rod 52 are fixed to the upper surface of the main weight part 51a.

[0032] When, due to the force of the wave, the case 11 makes a movement such that it swings, for example, in a horizontal direction orthogonal to the axial direction of the first rotation axes 32, 32 of the first swing mechanism part 30, a pendulum motion around the axis of the first rotation axes 32, 32 of the first swing mechanism part 30 occurs in the pendulum part 50. Specifically, around the axis of the first rotation axes 32, 32 of the first swing mechanism part 30 supported by the case 11, together with the second swing mechanism part 40 supported by the frame frame 33 of the first swing mechanism part 30, the pendulum part 50 performs pendulum motion.

[0033] Similarly, when the case 11 is moved, for example, by the force of the wave so as to swing about the first rotating shafts 32, 32 of the first swinging mechanism portion 30, a pendulum motion about the second rotating shafts 42, 42 of the second swinging mechanism portion 40 occurs in the pendulum portion 50. Specifically, the pendulum portion 50 performs a pendulum motion about the second rotating shafts 42, 42 supported by the frame 33 of the first swinging mechanism portion 30 supported by the case 11.

[0034] The first power generation mechanism portion 60 generates electric power from the rotational force (swinging force) about the axial direction of the first rotating shaft 32 output from the output shaft 36 of the first swinging mechanism portion 30. The first power generation mechanism portion 60 of the present Embodiment 1 includes a power generation case 61, a first power generation rotating shaft 62, a large bevel gear 63, two small bevel gears 64A, 64B, two one-way clutches 65A, 65B, a large spur gear 66, a small spur gear 67, a first generator 68, and a flywheel 69.

[0035] FIG. 11 is a horizontal cross-sectional view showing a main part of the first power generation mechanism portion 60. The power generation case 61 is composed of two first case plates 61a, 61a arranged to face each other so as to be orthogonal to the output shaft 36 of the first swinging mechanism portion 30, and two second case plates 61b, 61b arranged to face each other so as to be parallel to the output shaft 36. The output shaft 36 is rotatably supported by a bearing 61c provided on the first case plate 61a.

[0036] The first power generation rotating shaft 62 is rotatably supported between the two second case plates 61b, 61b via bearings 61d, 61d. The large bevel gear 63 is fixed to the tip of the output shaft 36 of the first swinging mechanism portion 30. The two small bevel gears 64A, 64B are respectively attached onto the first power generation rotating shaft 62 via one-way clutches 65A, 65B. The two small bevel gears 64A, 64B are arranged to mesh with the large bevel gear 63 facing from a direction orthogonal to the axial direction of the first power generation rotating shaft 62.

[0037] In the first embodiment, when the pendulum part 50 swings around the axes of the first rotating shafts 32, 32 and the frame 33 rotates (swings) around the axes of the first rotating shafts 32, 32, the output shaft 36 rotates (swings) via the transmission mechanism part 34. That is, due to the pendulum motion of the pendulum part 50 around the axes of the first rotating shafts 32, 32, the output shaft 36 rotates (swings) so as to repeat forward rotation and reverse rotation. Due to such rotation (swing) of the output shaft 36, the large bevel gear 63 fixed to the output shaft 36 also rotates (swings) so as to repeat forward rotation and reverse rotation.

[0038] Here, in the first embodiment, the two pinion gears 64A, 64B meshing with the large bevel gear 63 are attached onto the first power generation rotating shaft 62 via one-way clutches 65A, 65B serving as one-way rotation transmission parts that transmit only rotational forces in opposite directions to each other. Thereby, the rotational force during the forward rotation of the large bevel gear 63 rotates the first pinion gear 64A in the forward rotation direction by the first one-way clutch 65A, and thereby the first power generation rotating shaft 62 rotates in the specified direction. At this time, the second pinion gear 64B also rotates in the forward rotation direction due to the rotational force during the forward rotation of the large bevel gear 63, but the forward rotation force of the second pinion gear 64B is not transmitted to the first power generation rotating shaft 62 by the second one-way clutch 65B, so the second pinion gear 64B idles.

[0039] On the other hand, the rotational force during the reverse rotation of the large bevel gear 63 rotates the second pinion gear 64B in the reverse rotation direction by the second one-way clutch 65B. Thereby, the first power generation rotating shaft 62 rotates in the specified direction as in the case of the forward rotation of the large bevel gear 63. At this time, the first pinion gear 64A also rotates in the reverse rotation direction due to the rotational force during the reverse rotation of the large bevel gear 63, but the reverse rotation force of the first pinion gear 64A is not transmitted to the first power generation rotating shaft 62 by the first one-way clutch 65A, so the first pinion gear 64A idles.

[0040] Note that there is no particular limitation on the tooth number ratio (gear ratio) between the large bevel gear 63 and the pinion gears 64A, 64B. However, by setting the input side as the large bevel gear and the output side as the pinion gears as in the first embodiment, the rotational speed of the first power generation rotating shaft 62 can be increased, and the power generation efficiency is improved. In addition, the one-way rotation transmission unit may adopt a configuration other than the one-way clutches 65A and 65B, such as a ratchet mechanism or the like.

[0041] A flat gear 66 is fixed to one end of the first power generation rotating shaft 62, and a pinion gear 67 is provided to mesh with the flat gear 66. The pinion gear 67 is fixed to the input shaft of the first generator 68. Therefore, when the first power generation rotating shaft 62 rotates in a specified direction, the input shaft of the first generator 68 rotates in the specified direction via the flat gear 66 and the pinion gear 67. As a result, the rotor of the first generator 68 rotates to generate electric power, and the electric power is output from the first generator 68.

[0042] In the first embodiment, when a rotating force (oscillating force) that repeats forward and reverse rotations is input to the first power generation mechanism unit 60, both the rotating force during forward rotation and the rotating force during reverse rotation are input to the first generator 68 as a rotating force that rotates the first power generation rotating shaft 62 in a fixed direction (specified direction). For example, as shown in the graph of FIG. 12, even in a situation where the angle of the pendulum of the pendulum unit 50 shown by the broken line in the figure is reversed between positive and negative, the rotation direction of the first generator 68 is only in one direction.

[0043] If the first rotating shafts 32 and 32 of the pendulum unit 50 are directly connected to the first generator 68, the first power generation rotating shaft 62 of the first generator 68 will repeat forward and reverse rotations in a sine wave manner similar to the pendulum motion of the pendulum unit 50. In such a case, the loss of kinetic energy due to the acceleration and deceleration of the first power generation rotating shaft 62 at the time of switching between forward and reverse rotations of the first power generation rotating shaft 62 is large, and the power generation efficiency is significantly reduced. On the other hand, if, as in the first embodiment, the first power generation rotating shaft 62 of the first generator 68 rotates in a fixed direction (specified direction) regardless of whether the forward or reverse rotating force of the pendulum motion of the pendulum unit 50 is input, there is no switching between forward and reverse rotations of the first power generation rotating shaft 62, and the loss of kinetic energy due to acceleration and deceleration at the time of such switching can be avoided, and the power generation efficiency can be significantly improved.

[0044] Furthermore, in the first embodiment, as shown in FIG. 11, a flywheel 69 is attached to the other end of the first power generation rotating shaft 62. By providing the flywheel 69, as shown in FIG. 12, when the rotational speed of the first generator 68 (the rotational speed of the first power generation rotating shaft 62) that periodically changes decreases, the first generator 68 can be continuously rotated by the kinetic energy accumulated in the flywheel 69. According to this, the rotational speed of the first generator 68 (the rotational speed of the first power generation rotating shaft 62) can be smoothed, and the power generation efficiency can be improved. Note that it is advantageous to install the flywheel 69 closer to the first generator 68 side on the transmission path of the rotational force (oscillating force) because the weight of the flywheel 69 can be reduced in this way.

[0045] Also, as an example of the power generation mechanism portion 60' related to another arrangement example of the flywheel 69, for example, the one shown in FIG. 13 can be cited. The power generation mechanism portion 60' related to this arrangement example is an example in which the flywheel 69 is installed on the rotating shaft after being speeded up by the large spur gear 66 and the small spur gear 67 on the first power generation rotating shaft 62 (on the side of the first generator 68). According to this example, the smoothing effect of the rotational speed of the first generator 68 on the mass (moment of inertia) of the flywheel 69 can be enhanced.

[0046] Note that in the power generation mechanism portion 60' of FIG. 13, since the flywheel is not arranged on the first power generation rotating shaft 62, large spur gears 66, 66 are installed at both ends of the first power generation rotating shaft 62, respectively. Then, small spur gears 67, 67 attached to the input shafts of the two first generators 68, 68 are meshed with the respective large spur gears 66, 66. Thereby, the rotational force of the first power generation rotating shaft 62 can be input to the two first generators 68, 68 to generate electricity.

[0047] Also, in the power generation mechanism portion 60' of FIG. 13, the two first generators 68, 68 are arranged such that their respective input shafts are coaxial with each other, and a common flywheel 69 is provided for each input shaft to achieve weight reduction, miniaturization, etc.

[0048] The second power generation mechanism unit 70 generates electric power from the rotational force (oscillatory force) of the second power generation rotating shaft 72 output from the rotating shaft 42 of the second oscillating mechanism unit 40 around the axial direction. The second power generation mechanism unit 70 of the first embodiment includes a second power generation rotating shaft 72, a large bevel gear 73, two small bevel gears 74A and 74B, two one-way clutches 75A and 75B, a large spur gear 76, a small spur gear 77, a second generator 78, and a flywheel 79.

[0049] The basic configuration of the second power generation mechanism unit 70 of the first embodiment is substantially the same as that of the first power generation mechanism unit 60 shown in FIG. 11. Specifically, the second power generation rotating shaft 72 is rotatably supported between the second frame plates 43b and 43b of the frame body 43 of the second oscillating mechanism unit 40 via bearing portions 47 and 47. The large bevel gear 73 is fixed to the tip of one of the second rotating shafts 42 in the second oscillating mechanism unit 40. The two small bevel gears 74A and 74B are respectively attached onto the second power generation rotating shaft 72 via one-way clutches 75A and 75B. The two small bevel gears 74A and 74B are arranged to mesh with the large bevel gear 73 facing each other from a direction orthogonal to the axial direction of the second power generation rotating shaft 72.

[0050] In the first embodiment, when the pendulum portion 50 performs pendulum motion around the axes of the second rotating shafts 42 and 42 and the frame body 43 rotates (oscillates) around the axes of the second rotating shafts 42 and 42, the second power generation rotating shaft 72 supported by the frame body 43 changes its posture (rotates, oscillates) around the axes of the second rotating shafts 42 and 42. That is, due to the pendulum motion of the pendulum portion 50 around the axes of the second rotating shafts 42 and 42, the second power generation rotating shaft 72 repeatedly changes its posture between clockwise and counterclockwise around the axes of the second rotating shafts 42 and 42. Due to such a change in the posture of the second power generation rotating shaft 72, the two small bevel gears 74A and 74B fixed on the second power generation rotating shaft 72 repeatedly move (revolve) clockwise and counterclockwise along the large bevel gear 73 fixed to the second rotating shaft 42.

[0051] As two pinion gears 74A and 74B repeat clockwise and counterclockwise movement (revolution) along a fixed ring gear 73, the two pinion gears 74A and 74B will repeat forward and reverse rotation (oscillation) around the axis of the second power generation rotating shaft 72.

[0052] The second power generation mechanism 70 of the first embodiment 1 is similar to the above-described first power generation mechanism 60. The two pinion gears 74A and 74B that mesh with the ring gear 73 are mounted on the second power generation rotating shaft 72 via one-way clutches 75A and 75B that transmit only rotational forces in opposite directions. Thus, when the two pinion gears 74A and 74B move clockwise (revolve) along the fixed ring gear 73, the first pinion gear 74A rotates in the forward rotation direction by the first one-way clutch 75A, and the second pinion gear 74B idles by the second one-way clutch 75B. Thereby, the second power generation rotating shaft 72 rotates in the specified direction. Similarly, when the two pinion gears 74A and 74B move counterclockwise (revolve) along the fixed ring gear 73, the second pinion gear 74B rotates in the reverse rotation direction by the second one-way clutch 75B, and the first pinion gear 74A idles by the first one-way clutch 75A. Thereby, the second power generation rotating shaft 72 also rotates in the specified direction.

[0053] A spur gear 76 is fixed to one end of the second power generation rotating shaft 72, and a pinion gear 77 is provided to mesh with the spur gear 76. The pinion gear 77 is fixed to the input shaft of the second generator 78. Therefore, when the second power generation rotating shaft 72 rotates in the specified direction, the input shaft of the second generator 78 rotates in the specified direction via the spur gear 76 and the pinion gear 77. Thereby, the rotor of the second generator 78 rotates to generate electric power, and the electric power is output from the second generator 78.

[0054] Similar to the above-described first power generation mechanism unit 60, the second power generation mechanism unit 70 is configured such that the second power generation rotating shaft 72 of the second generator 78 rotates in a fixed direction (specified direction) regardless of whether the forward or reverse rotational force of the pendulum motion of the pendulum unit 50 is input. Therefore, there is no switching between the forward rotation and the reverse rotation of the second power generation rotating shaft 72, and it is possible to avoid the loss of kinetic energy due to acceleration and deceleration during the switching, and the power generation efficiency can be significantly improved.

[0055] Also, similar to the above-described first power generation mechanism unit 60, a flywheel 79 is attached to the other end of the second power generation rotating shaft 72 of the second power generation mechanism unit 70. Therefore, the rotational speed of the second generator 78 (the rotational speed of the second power generation rotating shaft 72) can be smoothed, and the power generation efficiency can be improved.

[0056] The light emitting unit 80 includes a light emitting element that emits light by receiving the electric power generated by the first generator 68 and the second generator 78. The use of the light emitting unit 80 is, for example, for visually confirming the position of the wave power generation device 1 of the first embodiment 1 at sea. Note that the light emitting unit 80 is an example of a configuration for receiving the electric power generated by the first generator 68 and the second generator 78, and various configurations can be adopted according to the use of the electric power generated by the first generator 68 and the second generator 78.

[0057] A plurality of light emitting means such as light emitting diodes (LEDs) are provided on the substrate of the light emitting unit 80. The role of each light emitting means is a light emitting means for making the position of the above-described wave power generation device 1 visible, a light emitting means for indicating that a failure or error has occurred in the devices inside the wave power generation device 1, a light emitting means for indicating the power generation state of the power generation means provided inside the wave power generation device 1 (for example, emitting light when each power generation unit is generating power), a light emitting means for indicating the power storage status of the power storage unit provided inside the wave power generation device 1 (for example, the status such as the power storage amount is full, the power storage is impossible, there is remaining power storage capacity, the power storage amount is empty, etc.), and the like are provided.

[0058] In addition, in order to control the wave power generation device 1, each control unit ((1) overall control unit, (2) artificial intelligence unit, (3) communication control unit, (4) charge / discharge and power transmission control unit, (5) operation control unit, (6) generator mechanism rotation control unit, (7) lighting control unit, (8) power generation control unit, (9) display control unit, (10) time management unit, (11) management control unit, (12) environmental observation control unit, (13) external option control unit, (14) movement control unit) that constitutes the control system shown in FIG. 26 is provided around the substrate of the light emitting unit 80.

[0059] For example, a power storage unit (secondary battery, storage battery, power storage device) may be mounted on the wave power generation device 1, and the power generated by the first generator 68 and the second generator 78 may be stored in the power storage unit. When the power storage unit is provided inside the wave power generation device 1, one power storage means or any number of power storage means can be provided inside the wave power generation device 1 as shown in FIG. 20. Specifically, it can be fixedly arranged at the bottom, top, or side of the case of the wave power generation device 1, or fixedly arranged on the upper or lower surface of the rocking pendulum, or fixedly arranged under the base plate of the light emitting unit 80. The power storage means provided inside the wave power generation device 1 may include two types of power storage means: a control power storage means for storing the power for controlling the wave power generation device 1 and an external power storage means for storing the power used outside the wave power generation device 1. In this case, the power storage capacity of the external power storage means is larger than that of the control power storage means. And the charging priority of the wave power generation device 1 is set higher for the control power storage means than for the external power storage means. This is because the control cannot be performed if the control power storage means is not charged. It is also possible to use only one type of power storage means and obtain both the control power and the external power for controlling the wave power generation device 1 from this single type of power storage means.

[0060] Further, for example, a power transmission unit that transmits power to external power receiving equipment may be mounted on the wave power generator 1, and the power generated by the first generator 68 and the second generator 78 may be transmitted from the power transmission unit to external power storage means or power receiving equipment. Further, electronic devices or the like that operate on electric power (for example, a GPS device, a fish finder, etc.) may be mounted on the wave power generator 1, and the power generated by the first generator 68 and the second generator 78 may be consumed by the electronic devices or the like on the wave power generator 1.

[0061] According to the first embodiment, a single pendulum part 50, which is a common pendulum part commonly used for the first rotating shaft 32 and the second rotating shaft 42, which are two rotating shaft parts having different axial directions from each other, is configured to perform pendulum motion around the respective axes of the rotating shafts 32, 42. Thereby, in the pendulum part 50, the movement of the wave that does not contribute to the pendulum motion around the axis of one rotating shaft (for example, the first rotating shaft 32) can be made to contribute to the pendulum motion around the axis of the other rotating shaft (for example, the second rotating shaft 42). And each pendulum motion around the axes of the respective rotating shafts 32, 42 is converted into electric power by the first power generation mechanism part 60 and the second power generation mechanism part 70, and any pendulum motion contributes to power generation. Therefore, electric power can be generated by the pendulum motion around the axis of another rotating shaft part from the movement of the wave (the force of the wave) that does not contribute to power generation in the conventional configuration in which the pendulum part performs pendulum motion only around the axis of one rotating shaft part, so the power generation efficiency is improved.

[0062] In the first embodiment, the case 11 receives the force of the wave from the horizontal direction orthogonal to the axial directions of the respective rotating shafts 32, 42, thereby generating or increasing the pendulum motion of the pendulum part 50 around the axes of the respective rotating shafts 32, 42 and contributing to power generation. Furthermore, in the first embodiment, by receiving the wave force that generates a rotational moment for tilting the case 11 about the axes of the respective rotary shafts 32 and 42, the pendulum motion of the pendulum portion 50 about the axes of the respective rotary shafts 32 and 42 is generated or increased, contributing to power generation. In particular, in the first embodiment, since the floating ring portion 12 is provided on the case 11, as shown in FIG. 14, the posture of the case 11 can be changed sensitively following the change in the sea surface inclination (wave height H) due to the wave motion. Therefore, the wave force that causes the change in the sea surface inclination (wave height H) can efficiently generate a posture change (rotational moment M) about the axes of the respective rotary shafts 32 and 42 in the case 11, improving the power generation efficiency.

[0063] 〔Second Embodiment〕 Next, another embodiment of the wave power generation device according to the present invention (hereinafter, this embodiment is referred to as "Embodiment 2") will be described. Since the basic configuration of the wave power generation device 1 in the second embodiment is the same as that of the first embodiment described above, in the following description, the components different from those of the first embodiment described above will be described.

[0064] FIG. 15 is a vertical cross-sectional view of the wave power generation device in the second embodiment. FIG. 16 is a horizontal cross-sectional view of the wave power generation device in the second embodiment. FIG. 17 is a vertical cross-sectional view showing the cross-section taken along the line D-D in FIG. 15. The wave power generation device 1 of the first embodiment is also mainly composed of a device main body portion 2 and a floating body portion 10.

[0065] The floating body portion 10 of the second embodiment is generally obtained by replacing the upper case portion 11a that constitutes the upper hemispherical portion of the case 11 of the first embodiment described above with a substantially disk-shaped case lid portion 11c. Since the upper surface of the case 11 of the second embodiment is flat, it is advantageous for installing various additional devices (here, the light emitting portion 80) added outside the case.

[0066] The apparatus main body 2 in the second embodiment includes, as in the first embodiment described above, a first swing mechanism unit 30, a second swing mechanism unit 40, a pendulum unit 50', a first power generation mechanism unit 60', a second power generation mechanism unit 70', and a light emitting unit 80. Although there are some differences in the configurations of these respective parts constituting the apparatus main body 2, they have the same configuration as that of the first embodiment described above. Note that the first power generation mechanism unit 60' and the second power generation mechanism unit 70' in the second embodiment adopt the configuration of the power generation mechanism unit 60' shown in FIG. 13.

[0067] Also, in the first embodiment described above, a transmission mechanism unit 34 is provided in the first swing mechanism unit 30, and the first power generation mechanism unit 60' corresponding to the first rotation shaft 32 of the first swing mechanism unit 30 and the second power generation mechanism unit 70' corresponding to the second rotation shaft 42 of the second swing mechanism unit 40 are configured to be at different vertical positions (heights) from each other (see FIG. 4 and the like). This configuration is an advantageous configuration when there is no room for a horizontal space inside the case 11 because the first power generation mechanism unit 60' and the second power generation mechanism unit 70' can be arranged side by side in the vertical direction.

[0068] In contrast, in the second embodiment, a common pendulum unit 50' arranges the first power generation mechanism unit 60' and the second power generation mechanism unit 70' corresponding to the respective rotation shafts 32 and 42 that the pendulum moves in the same vertical position (height). Therefore, in the second embodiment, the transmission mechanism unit 34 in the first embodiment described above is not provided.

[0069] Specifically, in the second embodiment, the attachment portion 31' of the first swing mechanism unit 30 is an annular member, and this attachment portion 31' is attached to the inner wall surface of the case 11. The frame 33 provided rotatably with respect to the first rotation shafts 32 and 32 fixedly supported by the attachment portion 31' is a rectangular frame member that is long in the axial direction of the first rotation shafts 32 and 32.

[0070] In the above-described Embodiment 1, the large bevel gear 63 of the first power generation mechanism unit 60' is fixed to the tip of the output shaft 36 to which the output pulley 34c of the transmission mechanism unit 34 is fixed. However, in the present Embodiment 2, it is fixed to the tip of one of the first rotating shafts 32, 32, i.e., the first rotating shaft 32. Therefore, the first power generation mechanism unit 60' of the present Embodiment 2 is arranged on the same plane as the first rotating shaft 32.

[0071] On the other hand, the second rotating shafts 42, 42 of the second power generation mechanism unit 70' in the present Embodiment 2 are respectively fixedly supported with respect to the second frame members 33b, 33b of the frame 33 of the first swing mechanism unit 30, similar to the above-described Embodiment 1. And also in the present Embodiment 2, the large bevel gear 73 of the second power generation mechanism unit 70' is fixed to the tip of one of the second rotating shafts 42, 42, i.e., the second rotating shaft 42. Therefore, the second power generation mechanism unit 70' of the present Embodiment 2 is also arranged on the same plane as the second rotating shaft 42.

[0072] With the above configuration, in the present Embodiment 2, the first power generation mechanism unit 60' and the second power generation mechanism unit 70' corresponding to the respective rotating shafts 32, 42 for which the common pendulum unit 50' performs pendulum motion are arranged at the same vertical position (height) with respect to each other. According to this, the center of gravity position of the apparatus main body unit 2 becomes lower than that in the case of the above-described Embodiment 1.

[0073] Further, the wave power generation device 1 of the present Embodiment 2 is equipped with a power storage unit 81. The power storage unit 81 is not particularly limited as long as it can store the electric power generated by the first power generation mechanism unit 60' and the second power generation mechanism unit 70'. However, generally, since the power storage unit 81 is a relatively heavy member, in the present Embodiment, it is arranged on the main weight portion 51a of the pendulum weight 51 of the pendulum unit 50'. According to this, the relatively heavy power storage unit 81 can be used as the weight of the pendulum unit 50', and can be utilized as an auxiliary for the swing moment of the pendulum unit 50'.

[0074] Furthermore, by using the relatively heavy power storage unit 81 as the weight of the pendulum unit 50', the power storage unit 81 is arranged at a location other than the pendulum unit 50', and compared with a configuration in which a weight separate from the power storage unit 81 is arranged on the pendulum unit 50', it is possible to achieve weight reduction of the entire wave power generation device 1, cost reduction due to reduction in the number of parts, and the like.

[0075] In addition, in the second embodiment, amplitude amplification mechanisms 38 and 48 as pendulum speed increasing parts for increasing the amplitude of the pendulum motion of the pendulum unit 50' around the axis of the first rotation shaft 32 and the amplitude of the pendulum motion of the pendulum unit 50' around the axis of the second rotation shaft 42 are provided in the first swing mechanism part 30 and the second swing mechanism part 40, respectively. Since the configurations of the first swing mechanism part 30 and the second swing mechanism part 40 are substantially the same, hereinafter, the amplitude amplification mechanism 48 of the second swing mechanism part 40 will be described as an example.

[0076] FIG. 18 is a cross-sectional view showing an example of the amplitude amplification mechanism 48, which is a partial enlargement of the cross-section shown in FIG. 17. The amplitude amplification mechanism 48 of the second embodiment mainly includes a drive part 48A, a detection part 48B, and a control part 48C. The power required for the amplitude amplification mechanism 48 is supplied from, for example, the power storage unit 81 or other power generation means such as solar power generation means.

[0077] The drive part 48A mainly includes a third small bevel gear 48a that meshes with a large bevel gear 73, which is an input bevel gear of the second power generation mechanism part 70, a drive motor 48b that generates a driving force for rotating the third small bevel gear 48a, and an electromagnetic clutch 48c that is arranged on the drive transmission path from the drive motor 48b to the third small bevel gear 48a.

[0078] The detection part 48B mainly includes a fourth small bevel gear 48d that meshes with a large bevel gear 73, which is an input bevel gear of the second power generation mechanism part 70, and an angle detection sensor 48e that detects the rotation angle of the fourth small bevel gear 48d.

[0079] The control unit 48C is constituted by a control board that controls the drive motor 48b of the drive unit 48A based on the detection result of the angle detection sensor 48e of the detection unit 48B.

[0080] The amplitude amplification mechanism 48 of the second embodiment identifies the top dead center of the pendulum motion of the pendulum part 50' from the detection result of the detection unit 48B, and drives the drive motor 48b of the drive unit 48A only at the start of the pendulum part 50' from the top dead center to increase the speed of the pendulum part 50' (the amplification principle of the swing). Thereby, it becomes possible to increase the amount of generated power significantly due to the increase in the speed of the pendulum part 50' by the amplitude amplification mechanism 48 with only a small power consumption in the amplitude amplification mechanism 48.

[0081] FIG. 19 is a flowchart showing an example of the control method of the amplitude amplification mechanism 48. As a specific control method of the amplitude amplification mechanism 48, first, the control unit 48C turns off the electromagnetic clutch of the drive unit 48A (S1), and disconnects the drive motor 48b from the third pinion gear 48a that meshes with the large bevel gear 73 of the second power generation mechanism unit 70. Thereby, even if the large bevel gear 73 of the second power generation mechanism unit 70 rotates (oscillates) so as to repeat forward and reverse rotations due to the pendulum motion around the axis of the second rotation shaft 42 of the pendulum part 50', the third pinion gear 48a idles. Therefore, the amplitude amplification mechanism 48 does not inhibit the pendulum motion around the axis of the second rotation shaft 42 of the pendulum part 50'.

[0082] On the other hand, the angle detection sensor 48e of the detection unit 48B detects the rotation angle of the fourth pinion gear 48d that meshes with the large bevel gear 73 of the second power generation mechanism unit 70 (S2). The fourth pinion gear 48d is supported by a frame body 43 that rotatably supports the second power generation rotating shaft 72. Therefore, when the frame body 43 rotates (swings) around the axis of the second rotating shaft 42 due to the pendulum motion of the pendulum unit 50' around the axis of the second rotating shaft 42, the fourth pinion gear 48d rotates (self-rotates) while repeatedly moving (revolving) clockwise and counterclockwise along the large bevel gear 73 fixed on the second rotating shaft 42. Therefore, there is a one-to-one relationship between the rotation angle (self-rotation angle) of the fourth pinion gear 48d and the swing angle of the pendulum motion of the pendulum unit 50' around the axis of the second rotating shaft 42. Thus, the control unit 48C can specify the swing angle of the pendulum motion of the pendulum unit 50' around the axis of the second rotating shaft 42 from the rotation angle of the fourth pinion gear 48d detected by the angle detection sensor 48e of the detection unit 48B, and can detect the top dead point of the pendulum motion (S3).

[0083] When the control unit 48C detects the timing of the top dead point of the pendulum motion around the axis of the second rotating shaft 42 of the pendulum unit 50' from the detection result of the angle detection sensor 48e of the detection unit 48B (Yes in S3), it turns on the drive motor 48b of the drive unit 48A (S4) and also turns on the electromagnetic clutch 48c (S5). Thereby, the driving force of the drive motor 48b is transmitted to the third pinion gear 48a, and the third pinion gear 48a is rotationally driven. Therefore, a driving force in the speed increasing direction for increasing the speed of the pendulum unit 50' at the start from the top dead point is input to the large bevel gear 73 of the second power generation mechanism unit 70, and the frame body 43 that supports the pendulum unit 50' is driven in the speed increasing direction around the axis of the second rotating shaft 42.

[0084] Thereafter, when a predetermined short specified time has elapsed after the control unit 48C turns on the electromagnetic clutch 48c (Yes in S6), it turns off the electromagnetic clutch (S7) and also turns off the drive motor 48b (S8). Thereafter, it returns to the processing step S2 again and repeats the processing.

[0085] By performing such control, it is possible to increase the speed at the start from the top dead center of the pendulum unit 50', and maintain and increase the amplitude of the pendulum motion around the axis of the second rotation axis 42 of the pendulum unit 50'. The power consumed by the amplitude amplification mechanism 48 in this control is slight, and the increase in the power generation amount of the second power generation mechanism unit 70 due to the increase in the speed of the pendulum unit 50' by the amplitude amplification mechanism 48 exceeds this, and overall, a significant increase in the power generation amount can be achieved.

[0086] Further, as shown in FIG. 15, the pendulum unit 50' of the second embodiment is provided with a pendulum center-of-gravity change mechanism 53 for changing the center-of-gravity position of the pendulum unit 50'. The pendulum center-of-gravity change mechanism 53 of the second embodiment includes a weight drive mechanism 53a as a weight displacement mechanism for displacing the auxiliary weight portion 51b along the longitudinal direction of the support rod 52 (the direction of approaching and separating from the first rotation axis 32 and the second rotation axis 42).

[0087] The weight drive mechanism 53a is fixed to the upper surface of the main weight portion 51a. The weight drive mechanism 53a can use, for example, a linear drive mechanism such as a ball screw feed mechanism. In the example of the ball screw feed mechanism, a ball screw is arranged along the longitudinal direction of the support rod 52, and by axially rotating this ball screw with a drive motor, the auxiliary weight portion 51b screwed to the ball screw is moved along the ball screw.

[0088] By displacing the auxiliary weight portion 51b along the longitudinal direction of the support rod 52 of the pendulum unit 50' by the weight drive mechanism 53a, the center-of-gravity position of the pendulum unit 50' changes along the longitudinal direction of the support rod 52. Thereby, the pendulum period of the pendulum unit 50' can be changed. Therefore, according to the movement of the waves and the like at the location (offshore) where the wave power generation device 1 of the second embodiment is used, by displacing the auxiliary weight portion 51b by the weight drive mechanism 53a, the pendulum period of the pendulum unit 50' can be adjusted to match the movement of the waves and the like.

[0089] By using this weight driving mechanism 53a, it is possible to dynamically adjust the pendulum period of the pendulum part 50' in accordance with the movement of waves that change moment by moment. Specifically, for example, as shown in FIG. 15, a 6-axis sensor 82 (for example, a combination of a 3-axis acceleration sensor and a 3-axis angular velocity sensor (gyro sensor)) as a motion detection part is installed on the inner wall surface of the case lid part 11c of the case 11, etc., to observe the attitude change and rocking motion of the case 11 due to the force of waves. Then, from this observation result, the period (a matching period adapted to the movement of waves) of the pendulum part 50' that maximizes the amplitude of the pendulum motion of the pendulum part 50' or minimizes the attenuation of the pendulum motion is estimated. Based on this estimation result, the weight driving mechanism 53a is controlled to displace the auxiliary weight part 51b so that the pendulum period of the pendulum part 50' becomes the estimated matching period of the pendulum part 50'.

[0090] Also, as shown in FIG. 15, by adopting a configuration in which the weight of the auxiliary weight part 51b is supported by a gas balancer 53b or the like, the energy required for the vertical driving of the weight driving mechanism 53a can be reduced.

[0091] So far, the mode of directly floating the wave power generation device 1 shown in FIGS. 1 to 19 on the water surface to perform wave power generation has been described. However, any number of wave power generation devices 1 can be arranged on a relatively large floating body (for example, an unmanned boat, an unmanned ship, a manned ship, a powered ship, an unpowered ship), and while the large floating body sways due to waves, the wave power generation devices on the large floating body can also indirectly perform wave power generation by indirect swaying.

[0092] When a plurality of wave power generation devices 1 are arranged on a large floating body, the wave power generation devices 1 can be fixedly arranged in a row on the deck of the large floating body or on the floor surface inside the floating body, or fixedly arranged in any number of multiple rows. Further, in order to effectively utilize the space, a plurality of floor members can be provided on the large floating body, and the wave power generation devices 1 can be fixedly arranged in multiple stages. For example, if more than 10 wave power generation devices 1 are arranged in a row and fixed in the length direction of the large floating body, and 5 rows of such rows are provided, 50 wave power generation devices 1 can be arranged in a plane. Furthermore, if the 50 wave power generation devices arranged in a plane are arranged in 4 stages in the vertical direction, a total of 200 wave power generation devices 1 can be fixedly arranged three-dimensionally.

[0093] When a plurality of wave power generation devices 1 are fixedly arranged on a large floating body, the power storage means may be provided in each wave power generation device 1, or the power generated by a plurality of wave power generation devices 1 may be stored in a power storage means having a relatively large capacity. When using a power storage means having a relatively large capacity, the wiring may be arranged such that the power generated by all the wave power generation devices 1 is stored in a single power storage means having a relatively large capacity, or a plurality of single power storage means having a relatively large capacity may be provided, and the wiring may be arranged such that the power generated by a plurality of (for example, 5) wave power generation devices 1 is stored in each power storage means having a relatively large capacity.

[0094] When the wave power generation device 1 has solar power generation means, by fixedly arranging it on an exposed part on the large floating body that can receive sunlight, power generation by sunlight becomes possible.

[0095] The large floating body on which a plurality of wave power generation devices 1 are fixedly arranged may be moored to an artificial object on the water to perform indirect power generation and power storage by waves, or may perform indirect wave power generation and power storage while being towed by another ship with a power source. Further, an arbitrary number of wave power generation devices 1 can be fixedly arranged on a ship with a power source, and indirect wave power generation and power storage can be performed while the ship with a power source moves on the water, or indirect power generation and power storage by waves can be performed in a situation where the ship with a power source is drifting or moored on the water.

[0096] Next, the uses and the like of the wave power generation device according to the present invention will be described. First, an indirect wave power generation device that performs wave power generation without physical waves directly contacting the wave power generation mechanism will be described. Specifically, the structure, control system, and uses of an indirect wave power generation device in which the wave power generation device swings directly or indirectly by waves, and the power generation mechanism in the wave power generation device generates electricity without physically contacting the waves will be described.

[0097] In addition, all the wave power generation devices to be described hereinafter may be floated on the water to directly receive the physical energy of the waves generated on the water and perform wave power generation. Further, all the wave power generation devices to be described hereinafter may be arranged not directly on the water but on floating bodies such as ships, boats, buoys, and floats, and the floating bodies directly receive the physical energy of the waves and swing, and the wave power generation devices arranged on the floating bodies indirectly receive the physical energy of the waves and generate electricity. When arranging a wave power generation device on a floating body to indirectly perform wave power generation, it is desirable to arrange one or a plurality of wave power generation devices on the floating body. Further, when arranging a wave power generation device on a floating body to indirectly perform wave power generation, a secondary battery, which is a power storage means for storing and discharging the electrical energy obtained by wave power generation, may be provided inside the housing of the wave power generation device or outside the housing of the wave power generation device. When a plurality of wave power generation devices are placed on the floating body, it is desirable to enable the electrical energy generated by any number of wave power generation devices to be stored in a common secondary battery. In that case, the power generation means of each wave power generation device and the common secondary battery are electrically detachably connected by a conductive cable.

[0098] In addition, a single wave power generation device or an assembly of wave power generation devices composed of a plurality of wave power generation devices can generate electricity while drifting on the water surface, while moving forward on its own, or while being moored on the water surface. The wave power generation device can be detachably moored to natural objects such as reefs, rocks, islands, and trees, or to artificial objects such as bridges, piers, lighthouses, solar power generation means, wind power generation means, and artificial mooring means (a structure extending from a fixed member fixedly installed on the bottom of the water to the water surface, or a floating body connected by a rope or the like to a weight dropped to the bottom of the water). Further, an assembly of wave power generation devices composed of a plurality of wave power generation devices can be detachably moored between natural objects, between natural objects and artificial objects, and between artificial objects.

[0099] As shown in FIG. 20, the shape of the housing (outer shell portion) of the wave power generation device has a shape such as an oval shape, a substantially spherical shape, a vertical elliptical shape, a horizontal elliptical shape, a rectangular shape, a combined shape of a rectangle and a curved surface, etc. It may have a shape surrounded by a curved surface partially or entirely. It is desirable that the top and bottom portions of the housing of the wave power generation device have a curved surface.

[0100] Further, as shown in FIG. 20, it is desirable that the wave power generation device housing has a secondary battery which is a power storage means capable of storing and discharging electricity. The arrangement position of the secondary battery is desirably arranged at the bottom of the wave power generation device housing, at the upper part (near the top), or on a movable member such as a pendulum. This is because the mass of the secondary battery can be utilized for the rocking motion of the wave power generation device and power generation.

[0101] The housing (outer shell) material of the wave power generation device can be made of materials such as metal (stainless steel, aluminum, aluminum alloy), FRP, polyvinyl chloride (rigid polyvinyl chloride), resin, etc. FRP (fiber reinforced plastic) is a composite material obtained by reinforcing resin with fibers, including glass fiber reinforced plastic (GFRP) using glass fibers, CFRP using carbon fibers, etc. It is desirable that the housing (outer shell) of the wave power generation device has flame retardancy. Also, having thermoplasticity can improve production efficiency. Specifically, it is desirable to configure the housing (outer shell) of the wave power generation device with a resin having both flame retardancy and thermoplasticity, for example, transparent rigid polyvinyl chloride. Also, the housing (outer shell) of the wave power generation device can be composed of multiple materials. For example, the bottom side of the wave power generation device can be composed of a metal such as opaque stainless steel, and the side with the top can be constructed with transparent rigid polyvinyl chloride. Also, the bottom side of the wave power generation device can be composed of FRP (fiber reinforced plastic), and the side with the top can be constructed with transparent polyvinyl chloride. In the case of such a hybrid material configuration, the metal part enhances the electromagnetic wave reflection performance and is easily detected by radar, and inside the transparent part composed of polyvinyl chloride, etc., lighting or presence indication light emitting means can be provided, or solar power generation means can be arranged to coexist different functions within the same housing.

[0102] Note that it is desirable for the housing to form a sealed space. When the housing is composed of different materials or multiple members, it is desirable to apply a waterproof structure by means of a waterproof seal, packing, etc. at the joints between them for joining.

[0103] The solar power generation means installed in the wave power generation device may be a panel-type silicon solar cell or a dye-sensitized solar cell. It may also be a perovskite solar cell, which is a type of dye-sensitized solar cell and uses a perovskite material instead of a dye. Since the film-type perovskite solar cell has flexibility, it can be bent. The film-type perovskite solar cell can be attached to the outer wall of the wave power generation device, and the electric power generated by sunlight can be stored in a secondary battery installed inside the wave power generation device via a conductive cable. The conductive cable is arranged from the outside of the housing to the inside of the housing through an opening provided in the housing. Also, a part of the housing of the wave power generation device can be composed of a transparent member such as polyvinyl chloride, and a silicon solar cell panel can be attached inside the transparent member, or a film-type perovskite solar cell can be attached. In these cases, the solar power generation means inside the housing of the wave power generation device and the secondary battery of the power storage means inside the housing of the wave power generation device can be connected by a conductive cable inside the housing of the wave power generation device. Also, in the case of a film-type perovskite solar cell, since it can be colored, it can be colored in warning colors such as yellow and red, or conspicuous colors such as white.

[0104] It is desirable to apply a mollusk adhesion prevention material that prevents the attachment of barnacles and mussels to the outer shell of the wave power generation device. This is because when the wave power generation device performs wave power generation, the attachment of barnacles and mussels becomes a resistance, reducing the power generation efficiency. Apply the mollusk adhesion prevention material not only to the submerged part of the housing of the wave power generation device but also to the part that emerges from the water surface. Specifically, apply the mollusk adhesion prevention material up to about half of the height of the wave power generation device in the height direction, or even higher. The mollusk adhesion prevention material is an additive such as sodium chlorite or mineral-based ceramic particles that kill the larvae of barnacles that initially attach, added to a protective paint or a toxic paint containing "cuprous oxide" or "zinc oxide" and then applied to the housing of the wave power generation device. Therefore, a part of the housing of the wave power generation device is colored red. At least the bottom of the housing of the wave power generation device or the submerged part is painted red regardless of the material of the housing.

[0105] In addition, a predetermined service life is required for the housing (outer shell) of the wave power generation device. It is necessary to be composed of a material that can achieve a service life of at least one year or more, or a thickness of a predetermined material. If possible, it is desirable to construct it with a material having a service life of 10 years or more, or 20 years or more, or a thickness of a predetermined material.

[0106] Next, an example of the waterproof structure of the wave power generation device will be described. The control system and various devices (power generation mechanism, solar power generation panel, operation means, various devices, control secondary battery, large-capacity secondary battery, display means, communication device, GPS terminal, various antennas, various lighting means, radar, fish finder, sonar, imaging camera, etc.) installed in the indirect wave power generation device (floating wave power generation device or underwater wave power generation device) handle electrical signals, currents, and voltages. Therefore, each of the control systems including all the control units from (1) to (14) below and each of the various devices provided in the wave power generation device are preferably arranged in a sealed space (sealed box) provided in the wave power generation device for waterproofing. In particular, it is desirable that the control system, the control secondary battery, the large-capacity secondary battery for power storage, etc. are arranged in a sealed space (sealed box) provided in the wave power generation device for waterproofing and have water immersion absorption means.

[0107] An opening and closing mechanism is provided in the sealed space for the operator to replace, repair, and operate various devices and control units. The opening and closing mechanism is protected from seawater and fresh water by a waterproof structure using a waterproof packing and a waterproof seal member. Furthermore, in order to prevent unauthorized persons from opening and entering the interior, it is desirable to provide the opening and closing mechanism with a locking means having the above-described waterproof structure. The locking means may be a numbered locking means that is unlocked when a plurality of numbers match, or a key-type locking means that is unlocked when a key having a specific shape is inserted.

[0108] In addition, when a plurality of wave power generation devices are arranged in proximity to each other, or when a plurality of wave power generation devices are arranged by being connected by a connecting means such as a rope, it is desirable that the unlocking means of each wave power generation device be common. Specifically, in the case of numbered locking means, it is desirable that unlocking can be performed with a common number. In the case of key-type locking means that is unlocked when a key having a specific shape is inserted, it is desirable for efficiency that the shapes of the keys for unlocking the locking means of each wave power generation device be common.

[0109] Also, there is an electrical connection cable in order for a control system arranged in a sealed space (sealed box) within the wave power generation device to enable electrical connection with the various devices described above arranged in the sealed space (sealed box) provided within the wave power generation device. Each sealed space (sealed box) is provided with an opening through which this electrical connection cable passes. A prevention structure using a waterproof packing or a waterproof seal member is provided at the opening of the sealed space in order to prevent flooding from between this opening and the electrical connection cable. And within the sealed space, in the event that seawater or fresh water floods in, it is desirable that a water absorption means consisting of a predetermined amount of water absorption gel (for example, a polyacrylic acid-based polymer superabsorbent polymer) covered with a water absorbent member such as a cloth member that can absorb water is arranged to absorb them and prevent them from entering the control system.

[0110] Also, the electrical connection cable used to enable electrical connection between each control unit within the wave power generation device and the various devices provided within the wave power generation device, and between the wave power generation device and a device existing outside the wave power generation device, is preferably a waterproof electrical connection cable with a waterproof function such as being covered with a waterproof member. Also, at the end of the waterproof electrical connection cable, a waterproof connector having a waterproof function is provided with a cover or the like having a waterproof function.

[0111] The connections between each control unit in the wave power generation device and the waterproof electrical connection cable are mutually connected by waterproof connectors provided respectively, and are electrically connected so that connection and disconnection are possible. Also, the connections between various devices provided in the wave power generation device and the waterproof electrical connection cable are mutually connected by waterproof connectors provided respectively, and are electrically connected so that connection and disconnection are possible. As a result, the electrical connection between each control unit in the wave power generation device and various devices provided in the wave power generation device can be carried out in a state where connection and disconnection are performed with a waterproof function.

[0112] When the wave power generation device is exposed to sunlight on the water for a long time in summer, the internal air pressure of the sealed wave power generation device may increase due to the expansion of air. In order to avoid rupture, it is desirable to provide a waterproof exhaust valve shown in Fig. 21 on the wave power generation device housing or the floating body power storage device housing described in the wave power generation device assembly system of Fig. 39. As shown in Fig. 22, this waterproof exhaust valve can be provided near the top of the wave power generation device housing or the floating body power storage device housing described later. Also, it can be provided at a position at least half the height of the housing. It can also be provided at a position less than half the height of the housing. When the power extraction type wave power generation device generates electricity on the water, it can also be provided at the submerged position.

[0113] Some wave power generation devices have one or more power storage means with a predetermined capacity for storing the power generated by the power generation means inside the housing, which is an internal power storage type wave power generation device. Also, in order to store the power generated by the power generation means inside the wave power generation device housing in the power storage means provided outside the wave power generation device housing or to use it outside the wave power generation device housing, there is also a power extraction type wave power generation device that extracts the power generated by the power generation means inside the wave power generation device housing outside the wave power generation device housing. The power extraction type power generation device also has a secondary battery as a power storage means inside. This is for supplying power to the control system inside the power extraction type power generation device. The power extraction type power generation device can extract the surplus power stored in the internal power storage means to the outside. Also, the floating body power storage device described later has a power storage means with a predetermined power storage capacity inside the housing. In this floating body power storage device and the power extraction type wave power generation device, it is necessary to provide power extraction means for extracting the power generated by the power generation means inside the housing outside the housing.

[0114] FIG. 23A shows the structure of a waterproof cable connector, which is an example of the power extraction means of a floating body power storage device and a power extraction type wave power generation device, and the continuous connection of the power extraction type wave power generation device. The housing of the power extraction type wave power generation device A is provided with a waterproof cable connector that detachably connects the power generation means inside the housing and the power storage means installed outside the housing, etc. A first convex terminal is provided on the outside of this waterproof cable connector. A waterproof connection cable for transmitting power to the external power storage means is detachably connected to this first convex terminal. And at the end of this waterproof cable, a waterproof connector having a concave terminal is provided. The shapes of both terminals can be reversed. For example, a concave terminal can be provided on the waterproof cable connector, and a convex terminal can be provided at the end of the waterproof connection cable.

[0115] Also, inside the waterproof cable connector terminal, there is a waterproof electric cable which is electrically connected to the power generation means inside the housing. The connection between the waterproof electric cable connected to the power generation means and the waterproof cable connector may be made by detachable connector means. Inside the waterproof cable connector, a silicon diode which is a reverse current prevention means for preventing the reverse flow of electric power is built in. This reverse current prevention means may also be provided in the electrical path between the waterproof cable connector and the power generation means instead of inside the waterproof cable connector.

[0116] The reverse current prevention means shortens the charging path between the power generation means and the external power storage means and can reduce the impedance of the charging path, so it is used in the wave power generation device assembly system as shown in FIGS. 37 and 38. However, this reverse current prevention means may not be necessary in some cases. For example, when using a power extraction type wave power generation device and a floating body power storage device in pairs as in the embodiment shown in FIG. 29C2, a waterproof cable connector (FIG. 23D) without the reverse current prevention means can be used from the waterproof cable connector of FIG. 23A. In that case, since the waterproof cable connector functions as a power input / output means, the power stored in the buoyancy power storage means can be used by both an external device connected to the power extraction type power generation device and the control system inside the power extraction type wave power generation device. And it is also possible to eliminate the power storage means or the control system inside the power extraction type wave power generation device.

[0117] In FIG. 23A, only the non-grounded side of the waterproof electric cable is shown, but actually, the grounded side waterproof electric cable also needs to be connected. Therefore, two more convex terminals for connecting the grounded side waterproof cable are provided on the waterproof cable connector. Using them, the grounded side waterproof cable electrically connects between the power extraction type wave power generation device A and the power extraction type wave power generation device B. Also, another grounded side waterproof cable electrically connects between the power extraction type wave power generation device A and the external power storage means.

[0118] In addition, the waterproof cable connector has a second male terminal for connecting the waterproof cable connector of another power extraction type wave power generator B. The second male terminal and the aforementioned first male terminal are electrically connected upstream of the aforementioned backflow prevention means (on the N-channel side of the PN junction of the backflow prevention means). The waterproof connection cable for connecting between the waterproof cable connectors is provided with waterproof connectors having recessed type terminals at both ends. When the power extraction type wave power generator B is at the final stage, a waterproof cap is attached to the second male terminal of the waterproof cable connector of the power extraction type wave power generator B.

[0119] Note that the installation position of the waterproof cable connector can be provided near the top of the wave power generator housing. Also, it can be provided at a position more than half the height of the housing. It can also be provided at a position less than half the height of the housing. It is also possible to provide it at the submerged position when generating electricity on the water.

[0120] The waterproof cable connector is a power extraction means for extracting the power generated by the power generation means inside the wave power generator housing to the outside of the wave power generator housing. An example of other power extraction means is a conductor that extracts the power generated by the power generation means inside the wave power generator housing to the outside of the wave power generator housing. This conductor as the power extraction means can extract the power generated by the power generation means to the outside of the wave power generator housing from the opening provided in the wave power generator housing. The conductor as the power extraction means may be a conductive cable. It is desirable that the conductive cable is a waterproof conductive cable having waterproof properties. Also, it is desirable that waterproof means such as a waterproof seal or a waterproof packing is applied to the opening.

[0121] The waterproof cable connector has a function as a power extraction means. In addition to the power extraction function, it can also be used as an electrical signal input / output means for exchanging electrical signals and data between the devices inside the wave power generator housing and the devices outside the wave power generator housing. Figure 23B shows the waterproof cable connector as an input / output means. An arbitrary number of male terminals are provided on the outer side and the inner side of the housing of the waterproof cable connector. The male terminals on the outer side and the inner side are electrically connected by conductive means. The waterproof conductive cable connected to the male terminal outside the housing is connected to a device outside the wave power generator housing, such as an antenna. On the other hand, the waterproof conductive cable connected to the male terminal inside the housing is connected to a device inside the wave power generator housing, such as the (13) external option control unit option connector of the control system. As a result, the antenna, which is a device outside the wave power generator housing, is electrically connected to the (3) communication control unit via the (13) external option control unit option connector of the control system, which is a device outside the wave power generator housing. When there are surplus male terminals on the outer side of the housing of the waterproof cable connector, a male terminal waterproof protection cap is attached to protect the male terminals. In this way, the waterproof cable connector as a signal transmission means can electrically connect an arbitrary number of devices outside the housing and devices inside the housing. The waterproof cable connector having an input / output function can be used in an internal power storage type wave power generator, a power extraction type wave power generator, a floating body power storage device, etc. Also, both a waterproof cable connector as a power extraction means and a waterproof cable connector as a signal transmission means can be provided. Further, as shown in Figure 23C, it is also possible to make a waterproof cable connector in which a power extraction means and a signal input / output means coexist in a single waterproof cable connector. Furthermore, as shown in Figure 23D in which the reverse current prevention means is removed from the power extraction means of the waterproof cable connector in Figure 23C, it is also possible to make a waterproof cable connector in which a power input / output means and a signal input / output means are provided side by side.

[0122] Since a power extraction type wave power generation device and a floating body power storage device swing due to waves, a waterproof conductive cable sways, and a waterproof cable connector receives a large force. As a result, there is a risk that the connection between the waterproof conductive cable and the waterproof cable connector may become disconnected. Therefore, one or more cable fixing means are provided on the outer side of the housing of the internal power storage type wave power generation device, the power extraction type wave power generation device, and the floating body power storage device. Further, one or more cable fixing means may be provided inside the housing of the power extraction type wave power generation device and the floating body power storage device to stabilize the waterproof conductive cable inside the housing. FIG. 24 shows the installation state of a waterproof cable connector attached to the housing of a power extraction type wave power generation device or a floating body power storage device, a waterproof conductive cable, and a cable fixture which is cable fixing means. The cable fixing means may be made of resin or may be made of an elastic body having elasticity. The waterproof cable fixing means is fixed to the wave power generation device housing with bolts and nuts, fixing screws, or an adhesive. This fixing means may have a two-piece structure, and the two pieces may be fixed with bolts and nuts, fixing screws, or an adhesive with a waterproof cable sandwiched between the two pieces.

[0123] FIG. 25 is a diagram for explaining the installation positions of the waterproof cable connector and the cable fixing means. As shown in FIG. 25, a pair of the waterproof cable connector and the cable fixing means can be provided near the top of the wave power generation device housing (or the floating body power storage device housing). Further, it can also be provided at a position more than half the height of the housing. It can also be provided at a position less than half the height of the housing. When the power extraction type wave power generation device generates power on the water (or when the floating body power storage device housing floats on the water), it can also be provided at a submerged position. At each position, for a pair of the waterproof cable connector and the cable fixing means, the position of the waterproof cable connector may be higher than the position of the cable fixing means, may be lower, or may be at the same height. When the position of the waterproof cable connector is higher than the position of the cable fixing means, there is an advantage that water flowing along the cable does not flow to the waterproof cable connector side.

[0124] Next, an example of the control system of the wave power generation device will be described. FIG. 26 is a diagram for explaining the control system of the wave power generation device. The control system is composed of a plurality of control units to be described hereinafter.

[0125] (1) Overall control unit (1) The overall control unit has a ROM which is a non-volatile storage means for storing and reading out programs, a CPU which is an arithmetic means for executing programs, and a RAM which is a volatile storage means for writing and reading data. The CPU of (1) the overall control unit may incorporate a processor having an 8-bit, 16-bit, or 32-bit floating-point arithmetic unit suitable for learning processing. When a processor having a 32-bit floating-point arithmetic unit is incorporated into the control system of the wave power generation device, advanced artificial intelligence functions such as natural language voice conversation and generated sentences in natural language can be realized at high speed. On the other hand, when a processor having an 8-bit or 16-bit floating-point arithmetic unit is incorporated into the control system of the wave power generation device, learning processing and artificial intelligence functions can be provided with low power consumption, so it is more suitable as the artificial intelligence built into the wave power generation device.

[0126] (1) Even when the overall control unit does not have an artificial intelligence function, an 8-bit, 16-bit, or 32-bit processor is incorporated into the CPU of (1) the overall control unit. When a 32-bit processor is incorporated into the overall control unit of the wave power generation device, a program made in 32 bits can be executed and calculated at high speed. On the other hand, when an 8-bit or 16-bit processor is incorporated into the overall control unit of the wave power generation device, the program can be executed and calculated with low power consumption and low heat generation, so it is more suitable as the processor built into the wave power generation device.

[0127] It also incorporates an operating system, which is system software that controls the operation of the computer system, and firmware in which software for controlling the computer system is pre-written in an integrated circuit such as a ROM and incorporated into the device.

[0128] The power supply for operating the entire control system is supplied from a secondary battery that can be repeatedly charged and discharged. As the secondary battery for controlling the supply of power to the entire control system, nickel-cadmium storage batteries, nickel-metal hydride batteries, lithium-ion batteries, lead storage batteries, and NAS batteries can be used. Among them, a lithium-ion battery is desirable because of its fast charging speed and compact size. Lithium-ion batteries for automobiles can be diverted for use in wave power generation devices. Generally, when a lithium-ion battery for an EV (electric vehicle) deteriorates due to use and its charging capacity drops to about 80%, it is replaced with a new lithium-ion battery. The used lithium-ion battery (the one with the charging capacity dropped to a predetermined amount) generated at that time can be used in a wave power generation device or a floating body energy storage device described later. The lithium-ion battery of Tesla Model 3 weighs 439 kg, has a power of 75 kW, and a cruising range of 310 miles. Therefore, a spherical floating body wave power generation device with a diameter of about 4 m can be equipped with less than one unit, or more than one unit (for example, 0.8 unit, 1.5 units, 2 units, 2.2 units, 3 units, etc.) of new or used lithium-ion batteries. Also, in this overall control system, as shown in the figure, each control unit such as a communication control unit and an operation control unit is interconnected by a control unit lock and a bus line, and data, instructions, and response signals are transmitted bidirectionally.

[0129] Incidentally, it is desirable to install the secondary battery incorporated in the floating body wave power generation device at a position below the waterline of the floating body wave power generation device. At least a part of the secondary battery incorporated in the floating body wave power generation device is preferably installed at a position below the waterline of the floating body wave power generation device. By dissipating the heat generated by the temperature rise of the incorporated secondary battery into the seawater or fresh water existing outside the outer shell of the floating body wave power generation device, it becomes possible to suppress the temperature rise. This arrangement is particularly effective when the secondary battery is a lithium-ion battery.

[0130] (2) Artificial intelligence unit (2) The artificial intelligence unit can also be stored as a program in a storage device such as a ROM or RAM within the (1) overall control unit. Alternatively, the (2) artificial intelligence unit having an artificial intelligence CPU, ROM, and RAM may be constructed within the overall control system in the wave power generation device separately from the (1) overall control unit. When the (2) artificial intelligence unit is provided in the wave power generation device, it is desirable to also provide in the wave power generation device one or more learned models that make judgments based on machine learning data related to specific functions, multiple machine learning data related to different functions, and learned data. In this case, the wave power generation device can autonomously move to a specific location, perform danger avoidance actions according to the situation, and generate electricity with optimal efficiency according to environmental data such as wave height and period.

[0131] On the other hand, the (2) artificial intelligence unit can be provided outside the wave power generation device, that is, in an onshore management facility, an on-board management facility, or in the cloud. The (2) artificial intelligence unit communicates with the aforementioned (1) overall control unit provided in the wave power generation device and the individual control units described later provided in the wave power generation device via the (3) communication control unit described later, and the (2) artificial intelligence located at a position away from the wave power generation device can also remotely control the wave power generation device. In this case, the power consumption burden consumed by the artificial intelligence, the accumulation of a large amount of machine learning data to enhance the function of the artificial intelligence, and the storage of multiple learned models with different functions can be performed at a remote location outside the wave power generation device.

[0132] (2) The artificial intelligence unit may have a natural language generation function, a natural language interpretation function, an image recognition function for recognizing images captured by a camera or images sent from the outside, and a natural language conversation function through voice generation and voice recognition. In such a case, from a monitoring center on land or on a ship, for the (2) artificial intelligence unit of the wave power generation device on the water, questions can be asked about the operating status of the wave power generation device, the charging status of the secondary battery, the power generation status of the wave power generation device, etc. in the form of voice information or language information, and operation instructions can be given to various devices connected to the control system of the wave power generation device.

[0133] (2) The artificial intelligence CPU of the artificial intelligence unit incorporates a processor with an 8-bit, 16-bit, or 32-bit floating-point arithmetic unit suitable for learning processing. When a processor with a 32-bit floating-point arithmetic unit is incorporated into the control system of the wave power generation device, advanced artificial intelligence functions such as natural language voice conversation and conversation using generated language sentences in natural language can be realized at high speed. On the other hand, when a processor with an 8-bit or 16-bit floating-point arithmetic unit is incorporated into the control system of the wave power generation device, learning processing and artificial intelligence functions can be provided with low power consumption, so it is more suitable as the artificial intelligence CPU built into the wave power generation device.

[0134] (2) The artificial intelligence unit enables autonomous control of a plurality of different functions such as the autonomous operation of the entire wave power generation device, autonomous navigation, autonomous danger avoidance behavior, autonomous periodic information transmission and reception, and autonomous power generation efficiency control. In order to realize the autonomous control of these functions, the (2) artificial intelligence unit has a learned model for each function that makes an optimal judgment based on the machine-learned data for each function, the machine-learned data in the past, and the current status data.

[0135] First, the case where the self-power generation efficiency control is performed by the (2) artificial intelligence unit will be described. The power generation efficiency or power generation output of the wave power generation device is affected by the size of the wave that shakes the wave power generation device, the wave period, the vibration period of the pendulum which is part of the power generation means in the wave power generation device, the height of the center of gravity of the wave power generation device, the installation angle of the power generation mechanism, and the like. Therefore, past data on waves in various situations (any one of the wave size, wave period, wave propagation direction, wave propagation speed, date data, time data, or any arbitrary combination thereof), and past data on the variable state within the wave power generation device (any one of the vibration period of the pendulum which is part of the power generation means, the height of the center of gravity of the wave power generation device, the installation angle of the power generation mechanism, or any arbitrary combination thereof) are associated with the output data (either the power generation efficiency or the power generation output, or both) of the past wave power generation device in that situation, and the power generation efficiency improvement machine learning data is repeatedly trained. The wave size and wave period are detected by a vibration sensor connected to the option connector of the (13) external option control unit described later. Also, the wave propagation direction and propagation speed are detected by a tidal current sensor connected to the option connector of the (13) external option control unit. The date data, or month and date data, and time data are obtained from a radio clock built into the (10) time management unit or a battery-driven quartz clock. Since the wave is greatly affected by the ebb and flow of the tide such as high tide and low tide, the date data, month and date data, time data, and the output data of the wave power generation device at that date and time alone can also become power generation efficiency improvement machine learning data. Also, including the date data, month and date data, time data, etc., training the past data on waves in the power generation efficiency improvement machine learning data is effective in improving the judgment accuracy of the artificial intelligence.

[0136] The power generation efficiency improvement model determines and outputs the power generation efficiency, which is the output of the wave power generation device, or the state variable in the wave power generation device (such as the oscillation period of the pendulum, the height of the center of gravity of the wave power generation device, the installation angle of the power generation mechanism, any one, or any combination) that increases the power generation output, based on the actual situation data related to the wave at a certain point in time (any one of the wave height, wave period, wave propagation direction, or any combination thereof) and the actual situation data related to the state variables in the wave power generation device (any one of the oscillation period of the pendulum, which is part of the power generation means, the height of the center of gravity of the wave power generation device, the installation angle of the power generation mechanism, or any combination), and the machine learning data of the power generation efficiency improvement that has been machine-learned. (2) Based on the output of the power generation efficiency improvement model, the artificial intelligence unit drives and controls one or more drive means built into the wave power generation device, such as the oscillation period adjustment mechanism (the weight height change actuator of the pendulum), the center of gravity adjustment mechanism (the charger height change actuator), the power generation mechanism rotation actuator, etc., to autonomously change the internal state of the wave power generation device and control the power generation efficiency and power generation output of the wave power generation device to be optimal.

[0137] Figures 27AA to 27AF and Figures 27B to 27C show examples of the wave power generation device state variable means for changing the state within the wave power generation device. Figures 27AA to 27AF show the vibration suppression mechanism and the power generation mechanism rotation mechanisms (14a, 14b, 15). However, the rotation actuator for rotating the power generation mechanism is not shown. Figure 27B shows the center of gravity position adjustment mechanism. Figure 27C shows the oscillation period adjustment mechanism.

[0138] In the description so far, as one of the situation data, data related to the wave (any one of the wave height, wave period, wave propagation direction, or any combination) has been described. However, considering that the output of the wave power generation device changes under the influence of the wave, data on the output of the wave power generation device (either the power generation efficiency, the power generation output, or both) and date and time data can be used as substitute variables for the data related to the wave.

[0139] That is, the output data (either one or both of the power generation efficiency and the power generation output) of the wave power generation device in various situations, both or either of the date and time data, and the data regarding the state variable in the wave power generation device (the vibration period of the pendulum which is a part of the power generation means, the height of the center of gravity of the wave power generation device, the installation angle of the power generation mechanism, any one, or any combination of them) which is the situation data of the movable part in the wave power generation device, and the output data (either the power generation efficiency or the power generation output, or both) of the wave power generation device in that situation are associated and repeatedly learned for the machine learning data for improving the power generation efficiency. Furthermore, in order to improve the accuracy, in addition to the output data of the wave power generation device in various situations, adding the date and time data in that situation to perform the machine learning of the machine learning data for improving the power generation efficiency is also effective.

[0140] The power generation efficiency improvement model determines and outputs the state variable (any one of the vibration period of the pendulum, the height of the center of gravity of the wave power generation device, the installation angle of the power generation part, or any combination of any number, etc.) in the wave power generation device that increases the power generation efficiency or the power generation output, which is the output of the wave power generation device, based on the output data (either one or both of the power generation efficiency and the power generation output) of the wave power generation device in a certain situation, and the situation data regarding the state variable in the wave power generation device (any one of the vibration period of the pendulum which is a part of the power generation means, the height of the center of gravity of the wave power generation device, the installation angle of the power generation mechanism, or any combination of them), and the machine learned machine learning data for improving the power generation efficiency. (2) The artificial intelligence unit drives and controls one or any number of driving means built in the wave power generation device, such as the vibration period adjustment mechanism (the weight height change actuator of the pendulum), the center of gravity adjustment mechanism (the charger height change actuator), the power generation part rotation actuator provided in the power generation part rotation mechanism (installed around 15 and 14b), etc., based on the output of the power generation efficiency improvement model, to autonomously change the internal state of the wave power generation device and control the power generation efficiency and the power generation output of the wave power generation device to be optimal.

[0141] In the autonomous danger avoidance behavior of the wave power generation device, for example, when the approach of a ship is detected by the radar of the (3) communication control unit provided in the floating wave power generation device, or when the approach of a typhoon is detected by obtaining various weather information and wave height information from the (12) environmental observation control unit, collision avoidance behavior with the ship, start of typhoon avoidance behavior, notification of the dangerous state to the outside via the (3) communication control unit, locking of the motor for rotating the charging mechanism, and braking lock for suppressing the movement of the charging mechanism by the vibration suppression mechanism, lowering the height of the power generation mechanism to lower the center of gravity of the wave power generation device and locking it, etc., safety ensuring actions are performed based on the actual situation data, machine learning data related to the danger avoidance behavior function obtained by performing machine learning on the action function with data of the same type as the actual situation data and a huge amount of data, and a learned model that makes a judgment regarding the danger avoidance behavior function based on the actual situation data and the machine learning data, and the control of the danger avoidance behavior is autonomously performed.

[0142] Also, when moving means such as a screw drive motor are provided as an option, the (3) communication control unit detects the current position information via GPS and autonomously performs optimal movement behavior control to move to the movement destination location instructed from the outside. As consideration information at that time, data such as wind force, wind direction, tidal current direction, tidal current speed, weather information, wave height information, etc. are obtained from the outside via the (3) communication control unit or from sensors provided inside the wave power generation device, which is actual situation data, and movement behavior function machine learning data obtained by performing machine learning on the action function with data of the same type as the actual situation data and a huge amount of data, and based on these data related to the movement behavior, the movement behavior control is autonomously performed by a movement behavior learned model that determines the optimal movement speed and optimal direction.

[0143] And the autonomous danger avoidance behavior is performed, for example, when the radar of the (3) communication control unit detects the approach of a ship or an aircraft. When the approach of a ship or an aircraft is detected, based on the position information of the wave power generation device obtained from the GPS, the connection status of the floating body wave power generation device (whether the wave power generation device is single, how many wave power generation devices are connected in what state, the number and connection positions of the floating body wave power generation devices with autonomous navigation functions), the approach speed and direction of the approaching aircraft or ship, the speed and direction of the tidal current and wind, etc., which are the actual situation data, and the danger prediction machine learning data created by performing machine learning with a vast amount of data of the same type as the actual situation data, the danger prediction model determines the possibility of a collision, and when it determines that it is dangerous, it autonomously performs the danger avoidance behavior. It issues a warning sound or a warning message from the speaker to the approaching ship, or turns on or blinks the warning lights of red or yellow to warn the approaching ship or aircraft. Also, information (approach information including the image of the approaching object) about the current dangerous situation is transmitted via the (3) communication control unit to the manned management base provided on land or the management center provided on the manned ship, and a request is made to issue a warning notice to the approaching ship or aircraft manually from the manned management base on land or the management center of the manned ship and to request the danger avoidance behavior.

[0144] In addition, the (2) artificial intelligence unit receives digital data and electrical signals of the actual situation from the (11) management control unit, various sensors provided in the wave power generation device, and various devices provided inside and outside the wave power generation device for various devices in the wave power generation device. By doing so, for the control system in the wave power generation device, based on the failure remote diagnosis data of various devices and the failure prediction machine learning data consisting of a huge amount of data at the time of past failures for the same type of actual situation data, that is, data from various sensors, digital data from various devices, and electrical signals, a failure prediction can be made for various devices connected to the control system in the wave power generation device by a pre-trained failure prediction model that predicts future failures. For various devices and secondary batteries connected to the control system in the wave power generation device, when a failure occurrence is predicted, a warning lamp for warning of the failure is lit for the device or secondary battery for which the failure occurrence is predicted, or the failure occurrence prediction information is notified to the management center of the wave power generation device on the ground or on the ship via the communication control unit described later.

[0145] (3) The communication control unit is connected to various antennas (all or part of satellite communication antennas, mobile phone base station antennas, 5G communication antennas, 4G communication antennas, short-range communication antennas, Wi-Fi communication antennas, GPS antennas, radar antennas, etc.) provided in the floating wave power generation device. When the outer shell of each antenna is made of a material with radio wave permeability such as polyvinyl chloride, it is desirable to install it at a high position inside the outer shell of the wave power generation device from the viewpoints of waterproofing and wind protection. However, when the outer shell is made of a material that does not allow radio waves to pass through, such as stainless steel, it is installed outside the outer shell. In that case, the antenna unit and the inside of the wave power generation device are electrically connected by a signal cable provided through a waterproof structure to exchange electrical signals.

[0146] In addition, the communication control unit has encryption / decryption means for encrypting and transmitting communication information and decrypting the encryption of the received communication information, enhancing the security function of the communication information. In particular, for specific information, that is, control information for controlling a control system built into an offshore wave power generation device (including information for controlling lower-level control units included in the control system) from a ground or shipboard management center, information collected by a fish finder, sonar, underwater camera, or aerial camera, and encrypting and transmitting their image information externally provides an important effect in preventing the leakage of business information and military information.

[0147] (3) A 5G mobile communication terminal device, a 4G mobile communication terminal device, a Wi-Fi communication device, and a satellite communication unit are connected to the communication control unit. (3) The satellite communication unit provided in the communication control unit conducts communication via satellites in space. Satellites in the geostationary orbit 36,000 km above the equator cover the whole of Japan and its territorial waters. Data transmission and reception are carried out between the antenna (earth station) installed in the wave power generation device and the satellite. Some of the radio waves for satellite communication are called Ku band and C band. The satellite communication band of the wave power generation device can be either Ku band or C band. Since the Ku band (frequency band 10.6 - 15.7 GHz: using the frequency band of 12.25 - 12.75 GHz for downlink and 14.0 - 14.5 GHz for uplink) has the characteristic that small antenna reception is possible, it is suitable for satellite communication with the wave power generation device as the base station. The satellite communication unit of the wave power generation device can transmit and receive voice, images, and digital data with satellite communication base stations around the world via multiple communication satellites in space. For example, if connected to Starlink, a satellite internet constellation operated by SpaceX in the United States, satellite internet access becomes possible in almost the entire area of the earth. The main counterpart communication base stations of the satellite communication unit of the floating wave power generation device that enables satellite internet access in almost the entire area of the earth are communication base stations provided in onshore wave power generation device management facilities that manage one or more wave power generation devices, communication base stations provided in ships, fishing boats, and military ships on the ocean around the world, and any base stations provided in offshore buoyancy power generation device management ships that manage one or more wave power generation devices.

[0148] The satellite communication unit of the wave power generation device can conduct two-way transmission and reception of voice, images, and digital data with any one or more communication base stations around the world almost in real time. Specifically, from the wave power generation device, meteorological information such as air temperature, weather, and wind direction detected by sensors built into the wave power generation device, ocean information such as wave height, tidal current speed, tidal current direction, and seawater temperature, position information of ships and aircraft detected by the radar installed in the wave power generation device, and radar images output by the radar can be continuously transmitted as information almost in real time.

[0149] When a fish finder or sonar is provided in a floating body wave power generation device or an underwater buoyancy power generation device, the floating body wave power generation device or the underwater power generation device can transmit information on the presence or absence of detected fish schools, submarines, and ships to onshore base stations and shipboard base stations around the world almost in real time.

[0150] When a fish finder is provided in the wave power generation device, it can obtain detection images of fish schools directly below the wave power generation device and the seabed and transmit the information to an arbitrary base station. When a sonar is provided in the wave power generation device, it can detect 360 degrees around the own ship, and can freely detect fish schools existing in the lateral and diagonal directions. It can continuously obtain detection images of fish schools, submarines, and the seabed in the lateral and diagonal directions, as well as time information and position information, either constantly or for an arbitrary period of time, and transmit the information to the communication device of an arbitrary satellite communication base station almost in real time. In addition, the detection information of fish schools and submarines can be recorded in storage means such as the RAM of the overall control unit in (1) with date and time information, position information, water depth information, and fish quantity information, or learned or analyzed by the artificial intelligence in (2), so as to predict the encounter of fish schools and submarines and transmit the result to the communication device of one or more arbitrary satellite communication base stations around the world via the satellite communication function.

[0151] Furthermore, a wave power generation device having a fish finder or sonar can obtain detection information of fish schools or submarines in almost real time from one or more other wave power generation devices having a fish finder or sonar via a communication path, and perform evaluation and analysis in combination with the detection information of fish schools or submarines by its own fish finder or sonar, and can also predict the moving destination of fish schools or submarines. Then, the predicted moving destination of the fish school can be transmitted to the communication device of one or more fishing boats such as skipjack fishing boats and tuna fishing boats or the communication base station on land almost in real time.

[0152] On one hand, for example, skipjack fishing boats or tuna fishing boats can obtain one or more fish school detection information or predicted fish school encounter information continuously at all times or for a predetermined period of time through communication from one or more floating wave power generation devices equipped with fish school detectors or sonars. As a result, fishing boats such as skipjack fishing boats and tuna fishing boats can move at an approach angle suitable for the fishing method in the sea area where fish schools have been detected, or approach at an approach angle suitable for the fishing method in the sea area where an encounter is predicted based on the predicted fish school encounter information, thereby efficiently and dramatically increasing the catch.

[0153] (3) The communication control unit can be electrically connected to an antenna for a base station of any mobile phone carrier provided inside the outer shell of the wave power generation device or outside the outer shell, and a base station device of any mobile phone carrier provided inside the outer shell of the wave power generation device or outside the outer shell. It is desirable to install multiple antennas for any mobile phone carrier to improve directivity. As much as possible, the antenna is preferably installed at a high position near the top of the floating wave power generation device. Also, the antenna and the base station device may be those of a single mobile phone carrier, or those of multiple mobile phone carriers may be installed together. The base station device for mobile phone carriers provided in the floating wave power generation device is located at the edge of the radio access network, collects voice and data signals from mobile phones, and sends them to the core network of the mobile phone carrier.

[0154] In this way, the floating wave power generation device having an antenna and a base station device for a mobile phone base station can be used as a base station for any number of mobile phone carriers. A floating wave power generation device with a single mobile phone base station function can enable mobile phone communication in an area with a radius of 1 km to several km. Also, by arranging multiple floating wave power generation devices with mobile phone base station functions at a predetermined distance (a distance at which they can communicate with each other), mobile phone communication in a wider area can be enabled. In these cases, if multiple antennas and base station devices for mobile phone carriers are provided in each floating wave power generation device with a mobile phone base station function, mobile phone communication operated by multiple mobile phone carriers in a wider area can be enabled.

[0155] The floating body wave power generation device can be installed with a wireless LAN router (Wi-Fi router) connected to a satellite communication device connectable to the Internet or a mobile phone communication device connectable to the Internet. Wi-Fi is an abbreviation of "Wireless Fidelity", which is a short-range communication technology for connecting devices to the Internet line. It is characterized by wireless connection to the Internet and can be used with Wi-Fi-compatible devices and peripheral devices such as personal computers, smartphones (mobile phones), tablets, game consoles, and printers within the range where radio waves can reach.

[0156] (3) The communication control unit makes electrical interconnections among a satellite communication device connectable to the Internet, a mobile phone communication device connectable to the Internet, and a wireless LAN router (Wi-Fi router) provided in the wave power generation device, enabling mutual communication among them. As a result, within a region of several tens of meters centered on the floating body wave power generation device, Internet connection by wireless connection is possible with Wi-Fi-compatible devices and peripheral devices such as personal computers, smartphones (mobile phones), tablets, game consoles, and printers. Furthermore, by arranging a plurality of floating body wave power generation devices each incorporating a wireless LAN router (Wi-Fi router) at a predetermined distance (a distance at which they can communicate with each other), it becomes possible to connect to the Internet wirelessly in a wider area.

[0157] GPS (Global Positioning System) is a satellite positioning system operated by the United States of America. Among the approximately 30 GPS satellites launched by the United States for military use, signals from several satellites in the sky are received by a GPS antenna and a GPS receiver, enabling the receiver to know its current position. By installing this GPS antenna and GPS receiver in a floating wave power generation device, the floating wave power generation device can accurately grasp its position on the earth in real time. Since this GPS receiver is connected to the communication control unit in (3) and electrically connected by the internal bus of the control system, each control unit constituting the control system can utilize the GPS signal. In particular, it becomes possible to interconnect the overall control unit in (1), the artificial intelligence unit in (2), the environmental observation control unit in (12), the moving means control unit in (14), the external option control unit in (13), and the GPS receiver, and each of these control unit locks can utilize the GPS signal in real time.

[0158] Install a radar with an output of about 5 kW (the output may be 5 kW or less, or may be 5 kW or more) in the floating wave power generation device, and the radar can be controlled by the communication control unit in (3). Since the communication control unit in (3) is electrically connected by the internal bus of the control system, each control unit constituting the control system can be connected to the radar. Specifically, it becomes possible to utilize the radar in the overall control unit in (1), the artificial intelligence unit in (2), the environmental observation control unit in (12), the moving means control unit in (14), the external option control unit in (13), and it plays an important role in enabling the floating wave power generation device to take danger avoidance actions.

[0159] As described above, the communication control unit (3) can transmit and receive data via a wave power generation device, any communication equipment in the world, a satellite communication network, or a 4G / 5G mobile communication network. As a result, remote control and remote diagnosis of the floating wave power generation device can be performed from onshore bases around the world or offshore bases on ships in the ocean. Remote updates of the firmware and operating system provided within the overall control unit (1) or the artificial intelligence control unit (2) within the wave power generation device can be carried out. Not only software, but also ON / OFF control of hardware such as the light-emitting means, fish finder, sonar, radar, etc. provided in the wave power generation device, and access to digital data and image data output by the fish finder, sonar, radar, etc. are possible from any location in the world.

[0160] Furthermore, the communication control unit (3) can perform remote diagnosis of failures and prediction of the occurrence of failures via a wave power generation device, any communication equipment in the world, a satellite communication network, or a 4G / 5G mobile communication network. Specifically, for various devices within the wave power generation device, the management control unit (11), various sensors provided within the wave power generation device, various devices provided inside the wave power generation device (control system, secondary battery, motor, light-emitting means, antenna, solar power generation means such as a solar panel, etc.), and various devices provided outside (light-emitting means, fish finder, sonar, radar, underwater robot, solar panel, etc.), by receiving digital data and electrical signals, remote diagnosis of failures of various devices and prediction diagnosis of failures that will occur in the future based on machine learning of data related to past failures can be performed remotely.

[0161] (4) The charge / discharge and power transmission control unit stores the electrical energy generated by the wave power generation device in a large-capacity secondary battery or a control secondary battery provided in the power generation device, or transmits the electrical energy generated by the wave power generation device to a floating body energy storage device outside the wave power generation device or to a power transmission grid outside the wave power generation device via a power transmission cable connected to the wave power generation device for control. Further, when the solar panel is connected to the (13) external option control unit, the (4) charge / discharge and power transmission control unit can also charge the control secondary battery or the large-capacity secondary battery built into the wave power generation device with the electrical energy converted from solar energy at a DC voltage. That is, the (4) charge / discharge and power transmission control unit also controls the electrical energy generated by the solar panel.

[0162] Furthermore, the (4) charge / discharge and power transmission control unit has an AC / DC converter that converts the alternating current generated by the wave power generation device into direct current, and stores electrical energy in the large-capacity secondary battery or the control secondary battery with the direct current.

[0163] When transmitting the electrical energy generated by the wave power generation device to a floating body energy storage device outside the wave power generation device or to a power transmission grid via a power transmission cable connected to the wave power generation device, the electrical energy is transmitted in the state of alternating current.

[0164] The wave power generation device is provided with two types of secondary batteries, a large-capacity secondary battery and a control-use secondary battery. The large-capacity secondary battery is for storing a large amount of electrical energy generated by the wave power generation device using wave power, and a large-capacity battery of about 15 kw to 200 kw is used. The large-capacity secondary battery is cartridge-type and is provided so as to be replaceable and removable. After being stored in a substantially full state, it can be taken out from the wave power generation device and stored on land or on a ship, or the electrical energy stored on land or on a ship can be taken out. For the control-use secondary battery, a secondary battery having the same or a smaller capacity than the large-capacity secondary battery is used. Since high-speed charge and discharge are required, a lithium-ion battery is desirable. The control-use secondary battery is used to supply electrical energy to the control system of the wave power generation device and various active means (motor, radar device, fish finder, sonar, camera, satellite communication device, mobile phone base station device, light-emitting device, underwater robot) connected to the control system. Thus, it is desirable that the wave power generation device be provided with a plurality of secondary batteries. Further, those plurality of secondary batteries have different sizes, different shapes, and different storage capacities.

[0165] (4)'s charge / discharge and power transmission control unit has a charging / discharging destination selection device. Since the wave power generation device can't do anything without the control system functioning, the electrical energy generated by the wave power generation device is first charged into the control secondary battery by the charging / discharging destination selection device. After that, charging of the large-capacity secondary battery is started. Even when the capacity of the control secondary battery drops below a certain low level, the charging / discharging destination selection device preferentially charges the control secondary battery over charging the large-capacity secondary battery. That is, when the charge of the control secondary battery is at a level above a predetermined level, the charging / discharging destination selection device charges the large-capacity storage battery. Since the control secondary battery can also experience failures or deterioration, it is made into a cartridge and is attached to the wave power generation device in a replaceable manner. The control secondary battery and the large-capacity secondary battery are constantly monitored for voltage, insulation status, temperature, and degree of deterioration by the (11) management control unit described later, and replacement is carried out based on the monitoring results. When an abnormality or failure is detected in the control secondary battery or the large-capacity secondary battery by the (11) management control unit, the use of the secondary battery in which the abnormality or failure was detected is stopped. For example, when an abnormality or failure is detected in the control secondary battery, the power supply source to the control system of the wave power generation device is switched from the control secondary battery to the large-capacity secondary battery, and after the switch, the electrical connection to the control secondary battery is cut off, and the use of the control secondary battery is stopped. Also, when an abnormality or failure is detected in the large-capacity secondary battery, the accumulation of electrical energy in the large-capacity secondary battery is stopped as soon as possible.

[0166] Among wave power generation devices, there are also power extraction type wave power generation devices that do not have a large-capacity secondary battery and transmit the electrical energy generated by the wave power generation device to the onshore power transmission grid via a power transmission cable or transmit it to a large-capacity secondary battery provided outside the wave power generation device. Even in such a wave power generation device, the charge / discharge and power transmission control unit in (4) preferentially charges the control secondary battery over external power transmission via the power transmission cable.

[0167] (5) The operation control unit is connected to a keyboard and various switches used by the operator to control the control system of the wave power generation device. The keyboard is a device for inputting character, symbol, and numerical information into (1) the overall control unit and (2) the artificial intelligence unit. A general keyboard has mechanically operating key tops, but there is a risk of water ingress into the gaps between the key tops. It is desirable that the keyboard and various switches in the wave power generation device have a waterproof function. Therefore, a touch panel type keyboard is desirable for the keyboard. Also, for the various switches, there are a main switch for turning on and off the entire control system of the wave power generation device, an individual control unit switch for turning on and off each individual control unit constituting the control system, an individual switch for turning on and off the control secondary battery and the large-capacity secondary battery individually, an external option switch for turning on and off an external option (solar panel, radar device, fish finder, sonar, camera, satellite communication device, mobile phone base station device, light emitting device, underwater robot, weather observation sensor, etc.) connected to the (13) external option control unit, and so on. The operator can operate these switches to individually reset or disconnect a malfunctioning control unit or external option device. It is desirable that these various switches have a waterproof structure with waterproof packing and waterproof seals.

[0168] (6) The generator mechanism rotation control unit rotationally controls the support body that supports the generator mechanism such as a pendulum by an actuator (such as a motor) driven by the power of the battery, rotates it in a direction perpendicular to the rotation axis of the pendulum in the direction of wave propagation, and improves the power generation efficiency. (6) The generator mechanism rotation control unit is connected to an actuator such as a motor by an electric signal line to control the actuator such as a motor that rotationally drives the support body that supports the generator mechanism.

[0169] According to Embodiments 1 and 2, the support for the power generation mechanism such as a pendulum can also be automatically rotated in a direction orthogonal to the rotation axis of the pendulum in the direction of wave propagation by the inertia of the pendulum vibration. In such Embodiments 1 and 2, it is possible to omit the (6) power generation mechanism rotation control unit and the actuator that rotationally drives the support.

[0170] (6) The power generation mechanism rotation control unit is controlled by the aforementioned (1) overall control unit or (2) artificial intelligence control unit to optimize the power generation amount of the wave power generation device. Also, the (6) power generation mechanism rotation control unit can be controlled to optimize the power generation amount of the wave power generation device by remote control from outside the wave power generation device, that is, from an onshore management facility or an onboard management facility via the (2) communication control unit.

[0171] (7) The lighting control unit is connected to various lighting means installed inside and outside the wave power generation device and to a control secondary battery or a large-capacity secondary battery provided inside the wave power generation device. Then, it performs ON / OFF control of various lighting means, brightness control of lighting devices, control of changing the emission color, etc. Also, since the (7) lighting control unit can be connected to a satellite communication network, a mobile communication network, a Wi-Fi communication network, and a short-distance communication network via the (3) communication control unit, remote control and remote diagnosis of various lighting devices provided in the wave power generation device can be performed from a manned management center, etc. provided on land or on an ocean-going ship. Therefore, various lighting devices provided in the wave power generation device can be illuminated with the electrical energy generated by the wave power generation device or remotely controlled and remotely diagnosed from a location away from the wave power generation device without performing power transmission by a power transmission line from land or ON / OFF control of various lighting means on water, brightness control of lighting devices, control of changing the emission color, etc.

[0172] (7) The various lighting devices controlled by the lighting control means include the following, namely, collision prevention lighting devices, ambient lighting devices, underwater fish aggregating lighting devices, underwater fish farming facility lighting devices, etc. Each lighting device may be installed alone on the wave power generation device, or a combination of multiple types of lighting devices may be installed on the wave power generation device. Also, each lighting device may have one light emitting part, or may have a plurality of light emitting parts consisting of an arbitrary number.

[0173] · Collision prevention lighting device It is a lighting device for clearly indicating the presence and position of the wave power generation device to the other party in order to prevent the wave power generation device from colliding with other ships, boats, and airplanes. The light emitting color of the lighting device is effective in white, red, yellow, etc. However, in addition to a single color at all times, a method of sequentially switching colors or a method of flashing is also effective. The number of lighting devices may be one, or a plurality of arbitrary numbers may be provided. When a plurality are provided, they may be of the same color or a combination of different colors. The installation location of the lighting device may be at a high position of the wave power generation device, or may be installed at an arbitrary height between the top and the water surface. If it is installed near the top (the highest part) of the wave power generation device, it can be visually recognized even from a distance.

[0174] · Ambient lighting device Like street lights on land, it can brightly illuminate the surroundings of the wave power generation device. The light emitting color of the lighting device is effective in white, red, yellow, etc. However, in addition to a single color at all times, a method of sequentially switching colors or a method of flashing is also effective. The number of lighting devices may be one, or a plurality of arbitrary numbers may be provided. When a plurality are provided, they may be of the same color or a combination of different colors. The installation location of the lighting device may be at a high position of the wave power generation device, or may be installed at an arbitrary height between the top and the water surface. If it is installed near the top (the highest part) of the wave power generation device, it is possible to brighten a wide area. In order to brighten a wider area, rod-shaped or pedestal-shaped supports may be installed near the top of the wave power generation device, and lighting devices may be installed at their high positions.

[0175] · Underwater fish aggregating lighting device When the water surface is brightly illuminated by a lighting device, plankton gathers, small fish that eat the plankton gather, and large fish and squid that prey on them gather. When a wave power generation device with an underwater fish aggregating lighting device is arranged around a squid fishing boat, or in or around an offshore squid jigging pit, it is convenient as many fish and squid gather. As for the light emission color of the lighting device, white, blue, green, red, etc. are effective, but in addition to a single color at all times, a method of sequentially switching colors or a method of flashing is also effective. The number of lighting devices may be one, or a plurality of any number may be provided. When a plurality are provided, they may be of the same color or a combination of different colors. The installation location of the lighting device may be at a high position of the wave power generation device, or may be installed at any height between the top and the water surface. If it is provided near the top (the highest part) of the wave power generation device, it is possible to illuminate a wide area. In order to illuminate a wider area, a rod-shaped or pedestal-shaped support can be installed near the top of the wave power generation device, and the lighting device can be installed at a high position on them.

[0176] · Submerged fish aggregating lighting device When an underwater lighting device is arranged near the bottom surface of the wave power generation device or a waterproof cable is hung from the wave power generation device and the underwater lighting device emits light at a water depth of several meters to more than 10 meters underwater, it is possible to gather many fish. As for the light emission color of the lighting device, white, blue, green, red, etc. are effective, but in addition to a single color at all times, a method of sequentially switching colors or a method of flashing is also effective. The number of lighting devices may be one, or a plurality of any number may be provided. When a plurality are provided, they may be of the same color or a combination of different colors.

[0177] The water depth at which the underwater lighting device is arranged can be changed to a desired water depth by replacing it with a waterproof cable having a desired length, or adjusting the length of a waterproof cable having a sufficient length with an underwater lighting provided at the tip of the waterproof cable so that the underwater lighting device is located at a predetermined depth (for example, winding the waterproof cable around something to adjust the length).

[0178] · Lighting device for fish farming facility Underwater lighting installed in the wave power generation device helps the growth of farmed fish by improving the feed requirement rate, reducing the amount of fish feed used, and thus reducing costs and improving water quality. In addition, by installing the lighting at a predetermined depth (for example, a water depth of 5 meters) to attract fish to the desired water depth, it is possible to reduce the infection of harmful organisms existing near the sea surface and improve the feeding efficiency. Further, (7) the lighting control unit controls the brightness, lighting time, and length of the lighting time of the underwater light-emitting part of the lighting device for fish farming facilities to provide a predetermined light cycle, thereby shortening the day-night cycle for farmed fish and promoting the growth of farmed fish.

[0179] (8) The power generation control unit performs control to change the height of the center of gravity of the wave power generation device or change the natural vibration frequency of the wave power generation device in order to optimize the wave power generation amount of the wave power generation device. In addition, suppression control for suppressing the vibration of the power generation mechanism is also performed. Specifically, an actuator for moving a power generation unit such as a pendulum in the vertical direction is controlled to change the center of gravity position of the wave power generation device. For example, when the waves are calm, the power generation control unit controls the center of gravity moving actuator to move the center of gravity of the wave power generation device to a high position to make the wave power generation device more likely to sway, and when the waves are rough, move the center of gravity of the wave power generation device to a low position to prevent excessive sway of the wave power generation device.

[0180] In addition, (2) the power generation control unit controls the natural vibration frequency changing means including a power generation weight in the wave power generation device, a spring provided between the power generation weight and a support body that supports the power generation weight, and an actuator that moves the position of the power generation weight on the support body in order to optimize the wave power generation amount of the wave power generation device.

[0181] Furthermore, (2) the power generation control unit controls an actuator for moving a power generation unit such as a power generation weight in the vertical direction to bring the power generation weight into contact with a vibration suppression mechanism to suppress the vibration of the power generation weight. This vibration suppression of the power generation weight is performed when the waves are too large, such as during a typhoon, or when the wave power generation device is moved without performing wave power generation.

[0182] (8) The power generation control unit is controlled by the aforementioned (1) overall control unit or (2) artificial intelligence control unit to optimize the power generation amount of the wave power generation device. Also, the (8) power generation control unit can be controlled by remote control via the (2) communication control unit from outside the wave power generation device, that is, from the wave power generation device control system of an onshore management facility or a shipboard management facility, to optimize the power generation amount of the wave power generation device.

[0183] (9) The display control unit displays the states of various devices provided in the wave power generation device (power generation device, solar power generation panel, operating means, various devices, control secondary battery, large-capacity secondary battery, display means, communication device, GPS terminal, various antennas, various lighting means, radar, fish finder, sonar, imaging camera, etc.) on an internal state display LCD or LED. Also, the display control unit displays the states of each control unit of the control system provided in the wave power generation device on an internal state display LCD or LED. Also, it displays the failure status and the results of failure diagnosis of various devices and each control unit on an internal state display LCD or LED. Further, the (9) display control unit obtains the power storage amount and charging state of the control secondary battery and the large-capacity secondary battery from the (4) charge / discharge control unit and displays them on an internal state display LCD or LED.

[0184] (9) The display control unit can send the display information on the internal state display LCD or LED, the power storage amount, and the charging state information of the control secondary battery and the large-capacity secondary battery to an onshore management facility or a shipboard management facility outside the wave power generation device via the (3) communication control unit.

[0185] (10) The time management unit incorporates a radio clock, a battery-driven quartz clock, a programmable timer, a time measurement device, and a year / month / day memory device. Since the (10) time management unit is connected to the bus line of the control system, it is possible to communicate with all other control units connected to the bus line of the control system regarding information on year / month / day, time, and duration.

[0186] (11) The management and control unit performs management of the operating states and fault diagnosis of all control units connected to the control system, and various devices (power generation devices, solar power generation panels, operating means, various devices, control secondary batteries, large-capacity secondary batteries, display means, communication devices, GPS terminals, various antennas, various lighting means, radars, fish finders, sonars, imaging cameras, etc.) connected to each control unit.

[0187] (11) The management and control unit performs fault diagnosis of all control units connected to the control system and various devices respectively connected to each control unit through power-on sequence control started when the power of the control system is turned on or reset control at the time of reset. Thereafter, (11) the management and control unit monitors the operating states of all control units connected to the control system and various devices respectively connected to each control unit at a predetermined time period. (11) The management and control unit transmits the fault diagnosis results or operating states of all control units connected to the control system and various devices respectively connected to each control unit to (1) the overall control unit, (2) the artificial intelligence control unit, or the control system of the management center arranged on land or on a ship. Transmission to the control system of the management center outside the wave power generation device is performed via (3) the communication control unit.

[0188] (12) The environmental observation and control unit is connected with internal temperature sensors, barometric pressure sensors, water temperature sensors, illuminance sensors, vibration sensors, sound collection microphones, internal flooding detection sensors, control secondary battery temperature sensors, large-capacity secondary battery temperature sensors, etc. of the wave power generation device. Each detection information detected from each sensor connected to the (12) environmental observation and control unit is shared by each control unit constituting the control system via the bus line of the control system.

[0189] For example, the (1) overall control unit and the (2) artificial intelligence control unit perform optimal wave power generation control and start fault diagnosis based on the detection information from the (12) environmental observation control unit. In addition, the wave power generation device control system of the management center arranged on land or on a ship can obtain the respective detection information detected from each sensor connected to the (12) environmental observation control unit via the (3) communication control unit of the wave power generation device, a satellite communication network, or a mobile communication network.

[0190] If it is detected that the large-capacity secondary battery temperature sensor is in an abnormally high temperature state, the (1) overall control unit, the (2) artificial intelligence control unit, or the wave power generation device control system of the management center arranged on land or on a ship stops charging the large-capacity secondary battery and cuts off the electrical connection between the control system and the large-capacity secondary battery. In addition, if it is detected that the control secondary battery temperature sensor is in an abnormally high temperature state, the charging of the control secondary battery is stopped, the electrical connection between the control system and the control secondary battery is cut off, and the power supply to the control system is switched from the control secondary battery to the large-capacity secondary battery so that the power supply to the control system is performed from the large-capacity secondary battery.

[0191] (13) The external option control unit is provided with a predetermined number of external option connection connectors for connecting a predetermined number of external options. And the external option connection connectors are connected to various devices (solar power generation panels, various antennas, above-water lighting means, underwater lighting means, radars, fish finders, sonars, underwater cameras, above-water cameras, underwater robots, above-water drones, underwater temperature sensors, etc.) provided outside the wave power generation device main body via waterproof connectors and electrical connection cables having a waterproof function. (13) The external option control unit and various devices connected to this (13) external option control unit can perform two-way communication with each other. (13) The external option control unit can send control instruction information to the connected various devices to control the various devices. Also, from the side of the various devices, a reaction signal to the control instruction and information detected and acquired by sensors and cameras on the side of the various devices, etc. can be sent to the (13) external option control unit. Signals and information obtained by the (13) external option control unit from the various devices are shared by each control unit constituting the control system via the bus line of the control system. Further, a reaction signal to the control instruction sent from the side of the various devices and information detected and acquired by sensors and cameras on the side of the various devices, etc. can also be transmitted to the wave power generation device control system of the management center arranged on land or on a ship via the (13) external option control unit, (3) communication control unit, satellite communication network, and mobile communication network. Conversely, from the wave power generation device control system of the management center arranged on land or on a ship, control instruction information for the various devices can be sent to the various devices via the satellite communication network, mobile communication network, (3) communication control unit of the wave power generation device, and (13) external option control unit to remotely control the various devices.

[0192] (14) The movement control unit controls the movement of the wave power generation device. More specifically, it controls the movement speed and movement direction of the wave power generation device to perform control to move to the target position.

[0193] When the wave power generation device has a screw driven by an electric motor as a moving means, the rotational speed of the electric motor, which is the power source within the wave power generation device, is controlled to control the moving speed of the wave power generation device.

[0194] When the wave power generation device has a water jet engine mechanism such as that used in a water bike as a moving means, propulsion force is obtained by pumping water drawn from underwater with an electric high-pressure pump, which is the power source, and forcefully discharging the water flow from the rear jet nozzle. Also in this case, similar to when the wave power generation device has a screw driven by an electric motor as a moving means, the moving speed of the wave power generation device can be controlled by an electric signal.

[0195] The moving direction of the wave power generation device can be controlled by driving a rudder provided at the bottom of the wave power generation device with a drive source such as an electric motor. Also, a pair of screws or water flow injection nozzles can be provided at predetermined intervals on the wave power generation device, and the moving direction of the wave power generation device can be controlled by providing a propulsion force difference between them. For example, when one of a pair of screws is rotated at a predetermined rotational speed and the remaining screw is stopped, the traveling direction of the wave power generation device can be controlled.

[0196] The moving speed and moving direction of the wave power generation device are controlled by the (14) movement control unit. And this (14) movement control unit is controlled by a program within the (1) overall control unit in the control system, or is autonomously controlled by the (2) artificial intelligence control unit. Or, it is remotely controlled from a control system at a land or ship management center located at a position separated from the wave power generation device via the (3) communication control unit.

[0197] The target position information for the movement of the wave power generation device is stored in the program within the (1) overall control unit or (2) the target position information is autonomously generated by the artificial intelligence control unit. Alternatively, from the control system in the onshore or on-board management center located at a position away from the wave power generation device, (3) via the communication control unit, the target position information can be set in the program within the (1) overall control unit or (2) the artificial intelligence control unit can be instructed with the target position information for remote control. Furthermore, from the control system in the onshore or on-board management center located at a position away from the wave power generation device, (3) via the communication control unit, directly to the (14) movement control unit, the movement direction and movement speed can be instructed to remotely operate the movement to the target position. In that case, the control system in the onshore or on-board management center remotely controls the wave power generation device to move it to a predetermined target position while grasping the current position of the wave power generation device based on the GPS signal sent from the (3) communication control unit of the wave power generation device.

[0198] Next, another example of the wave power generation device will be described. A pendulum-type wave power generation device to which the present invention is applicable will be described with reference to FIGS. 27AA, 27AB, 27AC, 27AD, 27AE, and 27AF.

[0199] The wave power generation device 100 in the examples shown in FIGS. 27AA and 27AB includes a floating body 102, a first support 110, a rotating shaft 120, a second support 130, a power generation weight 133, a power generation mechanism 140, a vibration suppression mechanism 150, a control unit (not shown), a control battery, and a storage battery. The floating body 102 has a hollow interior and is floated on the water surface W.

[0200] The shape of this floating body 102 is substantially oval, and each component is accommodated therein. In this example, among the oval floating bodies 102, the pointed sharp end portion 103 faces upward and protrudes from the water surface W, and the round blunt end portion 104 faces downward and is in the water. Further, a lower weight 105 for maintaining the posture of the floating body 102 is appropriately provided inside the blunt end portion 104. The first support body 110 is provided in the floating body 102 such that its axis is in the vertical direction. In this example, it includes an upper column portion 111 and a lower column portion 112 formed of a single column, an intermediate column portion 113 having a substantially vertical rectangular shape in a front view, and direction adjustment bearings 114a and 114b.

[0201] The end portions of the upper column portion 111 and the lower column portion 112 are supported by the direction adjustment bearings 114a and 114b. For this reason, the first support body 110 is rotatable about its longitudinal direction as an axis. And when the first support body 110 rotates, the rotation axis always becomes orthogonal to the waves. Note that as the first support body, instead of a columnar member as in this example, for example, the wall surface of the floating body 102 can be used as the first support body, or other bodies or structures can be used.

[0202] Among the above direction adjustment bearings 114b, the one provided on the upper side is installed directly on the inner surface of the floating body 102 or indirectly via a bracket or the like (not shown). Also, the one provided on the lower side is installed in a manner embedded in the lower weight 105. In addition, when there are other components around the lower column portion 112, for example, a turntable 115 (the broken line portions in FIGS. 27AA and 27AB) installed in the lower weight 105 can be used as the lower direction adjustment bearing 114b, and other components can be placed on this turntable 115. Further, for the rotation of the first support body 110, a control unit, a control battery, and an actuator (not shown) can be provided to perform some control. However, in this example, due to the inertia caused by the vibration of the second support body 130, the direction orthogonal to the axis of the rotation axis 120 can be automatically directed in the wave propagation direction.

[0203] The rotating shaft 120 is provided horizontally on the first support 110, and includes a horizontal shaft 121 and a pendulum bearing 122. The horizontal shaft 121 is provided between two intermediate column portions 113, and its left and right ends are installed so as to fit into the intermediate column portions 113. The pendulum bearing 122 is provided at the central portion of the horizontal shaft 121, rotates with respect to the horizontal shaft 121, and the second support 130 is attached thereto. In this example, a load for power generation that directly extracts power from the axis of the rotating shaft 120 is not connected to the rotating shaft 120.

[0204] The second support 130 hangs down from the rotating shaft 120 and performs a pendulum motion. In this example, two parallel columns are hanging down. Further, a spring support portion 131 for supporting the upper end of a spring 132 described later is provided between the two second supports 130.

[0205] The power generation weight 133 is supported by a spring 132 on a spring support portion 131 provided on the second support 130, and reciprocates along the second support 130 by the centrifugal force due to the pendulum motion of the second support 130. This power generation weight 133 is slidably attached to the second support 130 by a linear bearing 135. Further, the lower end of the spring 132 is attached to a spring attachment plate 134 shown in FIG. 27AE provided at the center of the upper surface of the power generation weight 133. Further, the lower surface of the power generation weight 133 is arc-shaped in a side view, and when the position of the power generation weight 133 is lowered or the like, the lower surface of the power generation weight 133 abuts against a braking wheel 151 described later with substantially the same strength.

[0206] The movement of this power generation weight 133 will be described with reference to FIGS. 27AC and 27AD(A) to (D). FIG. 27AC is a diagram for explaining a state in which when the floating body 102 vibrates due to waves, the second support 130 performs a pendulum motion due to the sway. At this time, since there is no particular load on the rotating shaft 120, the second support 130 can easily start vibrating.

[0207] Next, the reciprocating motion of the power generation weight 133 will be described with reference to FIGS. 27AD(A) to (D). Note that these figures are schematically shown for easier understanding of the explanation. FIG. 27AD(A) shows a state where the second support 130 is stationary. Assuming that the second support 130 moves toward the right side of the figure in response to the vibration of the floating body 102. When the second support 130 vibrates to the right from the position shown in FIG. 27AD(A), initially, the power generation weight 133 moves to the side opposite to the rotation axis 120 due to centrifugal force.

[0208] Next, as shown in FIG. 27AD(B), when the second support 130 reaches the end of its amplitude, the centrifugal force acting on the power generation weight 133 disappears, and the power generation weight 133 moves toward the rotation axis 120. Next, the second support 130 starts to move toward the left side and reaches the state shown in FIG. 27AD(C). Then, centrifugal force acts on the power generation weight 133, and it moves to the side opposite to the rotation axis 120. Further, when the second support 130 moves and reaches the state shown in FIG. 27AD(D), the centrifugal force acting on the power generation weight 133 disappears, and the power generation weight 133 moves toward the rotation axis 120. By repeating these motions, the power generation weight 133 repeats a reciprocating motion along the second support 130.

[0209] The power generation mechanism 140 shown in FIG. 27AE generates electricity by the reciprocating motion of the power generation weight 133. The power generation mechanism 140 generates electricity by the reciprocating motion of the power generation weight 133. This power generation mechanism 140 will be described with reference to FIGS. 27AE to 27AF.

[0210] In this example, the power generation mechanism 140 is attached inside the power generation weight 133 and to the second support 130. Specifically, the power generation mechanism 140 includes two rack gears 141a, 141b, two pinion gears 142a, 142b arranged coaxially, a one-way clutch 143, a torque converter 144, a flywheel 145, a generator 146, and a plurality of output shafts 147a, 147b, 147c that connect the components from the one-way clutch 143 (pinion gears 142a, 142b) to the generator 146. Among these, a part of the torque converter 144, flywheel 145, generator 146, and output shafts 147a, 147b, 147c is housed in the generator box 148 (or attached to the generator substrate 148). And the generator box 148 is attached to the second support 130 via a bracket 149c. As a result, the two pinion gears 142a, 142b are indirectly attached to the second support 130.

[0211] Also, two rack gears 141a, 141b are provided facing each other so as to correspond to the two pinion gears 142a, 142b exposed from the generator box 148 respectively. These two rack gears 141a, 141b are attached to the power generation weight 133 via brackets 149a, 149b. Also, the direction in which the rack gears 141a, 141b are attached is such that the longitudinal direction of the rack gears 141a, 141b is along the second support 130, that is, along the reciprocating motion direction of the power generation weight 133. As a result, the rack gears 141a, 141b are indirectly fixed to the power generation weight 133 that reciprocates with respect to the second support 130. The one-way clutch 143 is built into the pinion gears 142a, 142b and rotates the output shaft 147a in the same direction regardless of the rotation direction of the two pinion gears 142a, 142b.

[0212] Due to the structure, when the power generation weight 133 reciprocates with respect to the second support 130, the two pinion gears 142a and 142b rotate in opposite directions by the rack gears 141a and 141b attached to the power generation weight 133. For example, when the rack gears 141a and 141b shown in FIG. 27AF move, the pinion gear 142a in contact with the right rack gear 141a rotates clockwise as viewed from the front, and the pinion gear 142b in contact with the left rack gear 141b rotates counterclockwise. At this time, if the one-way clutch 143 is arranged so that the output shaft 147a rotates only clockwise, the pinion gear 142a in contact with the right rack gear 141a rotates the output shaft 147a, and the pinion gear 142b in contact with the left rack gear 141b idles.

[0213] Conversely, when the rack gears 141a and 141b move in the opposite direction, the pinion gear 142a in contact with the right rack gear 141a rotates counterclockwise as viewed from the front, and the pinion gear 142b in contact with the left rack gear 141b rotates clockwise. Then, the pinion gear 142a in contact with the right rack gear 141a idles, and the pinion gear 142b in contact with the left rack gear 141b rotates the output shaft 147a. By the rotation of the output shafts 147a, 147b, and 147c, the torque converter 144, the flywheel 145, and the generator 146 connected to the subsequent stage are driven to generate electricity.

[0214] The generated electric power is stored in a storage battery through a cable (not shown). Conversely, instead of the above structure, the rack gears 141a and 141b can be attached to the second support 130, and the generator box 148 or the generator substrate 148 can be attached to the power generation weight 133. Also, the torque converter 144 and the flywheel 145 are not essential components and can be omitted.

[0215] Returning to FIGS. 27AA and 27AB, the vibration suppression mechanism 150 will be described. The vibration suppression mechanism 150 abuts against the power generation weight 133 to restrict the pendulum motion of the second support 130. This is achieved by lowering the position of the power generation weight 133 by the center of gravity adjustment mechanism 160 and the vibration suppression mechanism 150 described later and bringing it into contact with the vibration suppression mechanism 150. In this example, the vibration suppression mechanism 150 includes a brake wheel 151, a brake shaft 152, a bracket 153, and an auxiliary generator 154. The brake wheel 151 rotates when the power generation weight 133 abuts against it.

[0216] The brake shaft 152 transmits the rotation of the brake wheel 151 and is pivotally supported by the bracket 153 to support the brake wheel 151. The bracket 153 is attached to the first support 110 and rotatably supports the brake shaft 152. The auxiliary generator 154 converts the rotation of the brake shaft 152 into electric power. Note that by also providing the vibration suppression mechanism 150 on the right side of the first support 110 in FIGS. 27AB, the power generation amount by the auxiliary generator 154 can be doubled. Further, as the vibration suppression mechanism 150, instead of generating power as in this example, a resistance such as a friction material may be driven by an actuator (none of which are shown) and pressed against the power generation weight 133.

[0217] Next, with reference to FIG. 27B, a wave power generation method using the center of gravity adjustment mechanism 160 will be described. The center of gravity adjustment mechanism 160 makes the height of the rotation shaft 120 adjustable with respect to the first support 110 to change the center of gravity position of the entire wave power generation device 101. In this example, both left and right end portions of the rotation shaft 120 are inserted into the intermediate column portion 113 of the first support 110, and the end portions are used as nuts 161 and are penetrated by a ball screw mechanism through a screw shaft 162 passing through the intermediate column portion 113. Note that in the moving range of the rotation shaft 120 in the vertical direction, slits (not shown) for the rotation shaft 120 to move are provided on the opposing surfaces of the intermediate column portion 113. The screw shaft 162 is driven by an actuator 163 provided on the side surface of the intermediate column portion 113. Note that the operation of this actuator 163 is performed by the control unit (not shown) and the control battery described above.

[0218] By raising and lowering this rotation axis 120, the center-of-gravity position of the floating body 102 can be adjusted, the strength of the restoring force of the floating body 102 can be adjusted, and the vibration frequency per unit time of the floating body 102 can be controlled. For example, when the wave height is high and the wave period is short, by lowering the center-of-gravity position to strengthen the restoring force of the floating body 102 and increasing the vibration frequency of the floating body 102, the vibration frequency of the second support 130 can be increased. Conversely, when the wave height is low and the wave period is long, instead of raising the center-of-gravity position to weaken the restoring force of the floating body 102 and lowering the vibration frequency of the floating body 102, a state is created in which the floating body 102 is easily tilted even by weak waves, and the second support 130 can be actively vibrated. Next, with reference to FIG. 27C, a wave power generation method using the vibration period adjustment mechanism 170 will be described. The vibration period adjustment mechanism 170 is configured to be able to adjust the heights of the spring 132 and the power generation weight 133 with respect to the second support 130, and to adjust the period of the pendulum motion of the second support 130.

[0219] In this example, both left and right end portions of the spring support portion 131 are inserted into the second support 130, and the end portions are used as nuts 171, and a ball screw mechanism is used in which the end portions are penetrated through a screw shaft 172 passing through the second support 130. Note that in the moving range of the spring support portion 131, slits (not shown) for the rotation axis 120 to move are provided on the opposing surfaces of the second support 130. The screw shaft 172 is driven by an actuator 173 provided on the side surface of the second support 130. The operation of this actuator 173 is performed by a control unit (not shown) and a control battery in the same manner as the center-of-gravity adjustment mechanism 160. By raising and lowering this power generation weight 133, the vibration period of the second support 130 is adjusted to resonate with the vibration period of the floating body 102. That is, when the vibration frequency per unit time of the floating body 102 is high, the heights of the spring 132 and the power generation weight 133 are raised to shorten the vibration period of the second support 130.

[0220] On the other hand, when the vibration frequency per unit time of the floating body 102 is low, the heights of the spring 132 and the power generation weight 133 are lowered to lengthen the vibration period of the second support 130, and the like. Thereby, it becomes possible to vibrate the second support 130 more efficiently.

[0221] Furthermore, other modified embodiments of the wave power generation device will be described. (1) Wave power generation device with solar power generation means (inside the housing, outside the housing, inside and outside the housing) If solar power generation means (solar power generation panel) is added to the wave power generation device, power generation by sunlight becomes possible even when there are no waves, and the power generation efficiency can be dramatically increased. Figures 28A and 28B show embodiments in which solar power generation means is attached to the wave power generation device.

[0222] The solar power generation means may be a panel-type silicon solar cell as shown in Figure 28B, or a dye-sensitized solar cell. It may also be a perovskite solar cell that uses a perovskite material as a perovskite instead of a dye as a type of dye-sensitized solar cell. Since the film-type perovskite solar cell has flexibility, it can be bent. The housing (outer part) of the wave power generation device often has a shape surrounded by an oval, elliptical, substantially spherical, or the like aspect. Therefore, as shown in Figure 28A, the film-type perovskite solar cell can be attached to the outer wall of the wave power generation device, and the electric power generated by sunlight can be stored in a secondary battery installed inside the wave power generation device. Also, a part of the housing of the wave power generation device can be composed of a transparent member such as polyvinyl chloride, and a film-type perovskite solar cell can be attached inside the transparent member, or a silicon solar cell panel can be attached inside the transparent housing. In these cases, the solar power generation means inside the housing of the wave power generation device and the secondary battery inside the housing of the wave power generation device can be connected by a conductive cable inside the housing of the wave power generation device. Also, in the case of a film-type perovskite solar cell, since it can be colored, it can be colored in warning colors such as yellow and red, or conspicuous colors such as white.

[0223] The housing of the wave power generation device has flame retardancy. If it is made of a transparent material such as polyvinyl chloride, which is a thermoplastic resin, a solar power generation panel can be installed inside the housing of the wave power generation device. Also, if flexible solar power generation means is used, the flexible solar power generation means can be arranged in contact with or in close proximity to the curved surface of the housing. In this case, it is desirable to install the solar power generation means at a position above the waterline of the wave power generation device. For example, solar panels can be installed in a region from near the top to about 1 / 3 or 2 / 3 of the height of the housing. In this case, the opening for accessing the inside of the wave power generation device can be installed in a region where the solar power generation means is not installed. Also, the light / radio wave reflecting member for danger avoidance, which will be described later, can be installed in a region where the solar power generation means is not installed.

[0224] For example, a flexible film-like solar power generation means can also be installed in a belt-shaped region between about 1 / 4 of the height from the top of the housing and about 2 / 3 of the height from the top of the housing. In this case, near the top of the housing, a flat solar panel, an antenna for satellite communication, an antenna for GPS, an antenna for a mobile base station, a light-emitting means for danger avoidance, a light-emitting means for lighting, etc. can be arranged.

[0225] Also, one or any number of solar power generation means can be installed outside the housing of the wave power generation device (for example, near the top or on the side of the housing). In this case, the transparency of the wave power generation device is not necessarily required. The solar power generation means can be flat or curved. When installing the solar power generation means outside the housing, it is necessary to connect a conductive cable for sending the electrical energy generated by the solar power generation means to the secondary battery charging device inside the housing from the solar power generation means through the opening of the wave power generation device housing to the secondary battery charging device inside the housing. The opening of this wave power generation device housing has a waterproof structure composed of a waterproof seal, a waterproof packing, etc. Also, the conductive cable used here is a conductive cable with a waterproof function having a waterproof layer, etc.

[0226] Although the case where the photovoltaic panel is provided inside the housing and the case where it is provided outside the housing have been described, it can also be installed both inside and outside the housing as necessary.

[0227] The wave power generation device having the photovoltaic means can be moored to an artificial mooring means (a structure extending from a fixed member fixed to the bottom of the water to above the water surface, or a floating body connected by a rope or the like from a weight dropped to the bottom of the water). The wave power generation device having the moored photovoltaic means may be one or any number of plural ones. Further, when a plurality of wave power generation devices are moored to the mooring means, the wave power generation device having the photovoltaic means and the wave power generation device not having the photovoltaic means can be moored in a mixed manner. Further, those having different structures such as those having the photovoltaic means outside the housing and those having it inside the housing can be combined and moored.

[0228] The wave power generation device having the photovoltaic means can be simply allowed to drift without being moored to anything. In a relatively stable water area such as an inner bay or a lake, it can be simply allowed to drift. Further, if the position of the wave power generation device can be grasped by a GPS device, it can be recovered at any time.

[0229] The wave power generation device having the photovoltaic means can also be self-propelled when it has the self-propelling means described later. It can be constantly self-propelled, but it is desirable to combine drifting and self-propelling and arrange it within a predetermined area. In this case, it is desirable to allow it to drift for most of the time and self-propel it to a predetermined position within the predetermined area when it is likely to go outside the predetermined area as a result of drifting.

[0230] The wave power generation device having the photovoltaic means can also be towed by a towing means such as a ship, a boat, or an underwater drone. While towing one or any number of wave power generation devices having the photovoltaic means by the towing means, power generation can be performed by both sunlight and wave power and power can be stored in a secondary battery.

[0231] All the technologies related to solar power generation and the solar power generation means described so far can be applied in all embodiments in this specification. Specifically, it can be applied to both the internal power storage type wave power generation device and the power extraction type wave power generation device.

[0232] (2) Wave power generation device with collision prevention function (reflective member · light emitting means) Figure 28F shows a wave power generation device with collision prevention means. Adding collision prevention means (reflective member that reflects light or electromagnetic waves, light emitting means such as red or yellow) to the wave power generation device can achieve significant effects in preventing collisions with other ships and aircraft.

[0233] The size of the wave power generation device includes those with a diameter of about 2m, those with a diameter of about 4m or more. Since such relatively large wave power generation devices drift singly or in a dispersed manner in multiple units, or are moored or towed singly or in multiple units connected together, preventing collisions with other ships and aircraft is an important issue.

[0234] An example of the collision prevention means is the light emitting means. One unit or multiple units of light emitting means are arranged near the top, in the side area, or both of the wave power generation device respectively. The light emitting means composed of a plurality of light emitting diodes is desirable because it can change the light emission intensity, change the light emission color, or blink.

[0235] It is desirable to change the light emission intensity and the light emission mode (constant lighting, short - cycle blinking, long - cycle blinking, periodically changing the light emission intensity during constant lighting) of the light emitting means between the bright time zone during the day and the dark time zone at night. For example, if the light emission intensity is reduced in the night time zone compared to that in the day time zone, power consumption can be reduced. The determination of the time zone is performed by the (1) overall control unit based on the (10) time management unit in the control system of the aforementioned wave power generation device, and the (1) overall control unit controls the light emission mode of the light emitting means based on the determination result.

[0236] The emission color of the light-emitting means is preferably red as it also matches the image of danger. In addition, the yellow emission color not only matches the image requiring attention but also has relatively high recognition in situations with poor visibility such as thick fog, so it can be said that the collision avoidance function is high. Normally, as a collision prevention means, it is desirable to turn on or blink the red light emission, and when the visibility is poor such as during thick fog, switch the light emission mode to yellow lighting or blinking. The occurrence of thick fog or poor visibility situations is detected by sensors built into the wave power generation device or by obtaining weather information from communication means such as satellite communication outside the wave power generation device. Based on this information, (1) the overall control unit controls the light emission mode.

[0237] Another example of the collision prevention means is the installation of a reflecting member that reflects light or electromagnetic waves. For example, by attaching a belt-shaped light-reflecting member with a fluorescent color having a width of about 50 cm to 80 cm around the entire circumference of the wave power generation device, a collision prevention means can be installed on the wave power generation device. If this belt-shaped light-reflecting member is made of metal (zinc, copper, iron), it reflects electromagnetic waves, so the presence of the wave power generation device can be detected by the radar installed on ships or airplanes. Furthermore, by attaching a plurality of belt-shaped reflecting members of any number at intervals on the outer circumference of the power generation device, the visibility and the electromagnetic wave reflection function can be enhanced. Also, the belt-shaped reflecting member may be attached horizontally or attached in an inclined manner.

[0238] When the housing of the wave power generation device is made of a metal such as stainless steel, it reflects electromagnetic waves without any special measures. However, when the housing is made of polyvinyl chloride or fiber-reinforced plastic (FRP), it is necessary to enhance the electromagnetic wave reflection function by applying a metal spray such as zinc to the housing of the wave power generation device or attaching or fixing a metal electromagnetic wave reflecting member. It is desirable to apply a metal spray such as zinc or attach or fix a metal electromagnetic wave reflecting member inside the housing of the wave power generation device because it is not directly affected by the waves.

[0239] All of the collision prevention technologies and collision prevention means described so far can be applied in all embodiments in this specification. Specifically, it can be applied to both internal power storage type wave power generation devices and power extraction type wave power generation devices.

[0240] (3) Wave power generation device with wind receiving member (mooring / drifting / self-propelled / towed) In an environment such as an inner bay or a lake where there are many quiet wave times, it is predicted that the power generation efficiency of the wave power generation device will decrease. Therefore, a wind power generation means that uses wind power, which is a natural force other than wave power, to generate electricity, or a wave power generation device having a wind receiving member that enhances the power generation efficiency of the wave power generation device will be described. FIG. 28G shows a wave power generation device with a wind receiving member which is a vibration enhancing means.

[0241] A wind receiving member, which is a vibration enhancing means, is provided at a relatively high position of the wave power generation device to cause the wave power generation device to sway by the wind or to enhance the rocking vibration by the wind, thereby generating electricity by causing the wave power generation device to sway by the wind power. As a result, power generation by wind power, power generation by the combination of wind power and wave power, and power generation by wave power are possible, enabling power generation by natural energy in three modes.

[0242] The wind receiving member can be made of materials such as metal, FRP, polyvinyl chloride, resin, etc. The material of the wind receiving member preferably has flame retardancy. Also, having thermoplasticity is beneficial for improving production efficiency.

[0243] When it is made of metal, it reflects electromagnetic waves, so it is likely to be detected by the radar installed on ships or aircraft. When it is made of materials such as FRP, polyvinyl chloride, resin, etc., if it is painted with zinc spraying or a paint containing metal powder, the reflection of electromagnetic waves can be enhanced as in the case of metal.

[0244] Also, the color of the wind receiving plate is preferably a color that is easy for people to notice, such as yellow, red, fluorescent color, etc. Furthermore, when a plurality of wind receiving members are provided on the wave power generation device, the colors of the wind receiving members can also be configured with different colors.

[0245] The method of attaching a wind receiving member to a wave power generation device includes a method of fixing by adhesion with an adhesive, a method of fixing by mechanical fixing means such as bolts, nuts, and screws, a method of fitting and fixing the base of the wind receiving member into a groove provided on the outside of the wave power generation device housing, a method of adhering one side of a magic tape (registered trademark) to the outside of the wave power generation device housing and adhering the other side of the magic tape to the base of the wind receiving member, and fixing the wind receiving member to the wave power generation device housing by the binding force of the magic tape, etc.

[0246] When the wind receiving member is fixed by mechanical fixing means, when the base of the wind receiving member is fitted and fixed, when the wind receiving member is fixed by the binding force of the magic tape, etc., the wind receiving member can be detachably attached as necessary. In the case where the wave force is stronger than expected or an abnormal situation such as a typhoon is predicted, the wind receiving member can be removed. Of course, after the typhoon has passed, it is possible to attach it again.

[0247] The number of wind receiving members may be one, or any plurality.

[0248] The attachment position of the wind receiving member can be provided at one location or any number at different heights in the height direction of the wave power generation device. If the number of attachment positions of the wind receiving member is set to be more than the number of wind receiving members, it becomes possible to change the attachment position of the wind receiving member according to the environmental conditions. Also, according to the environmental conditions, the number of installed wind receiving members can be increased or decreased. Also, it is possible to install the wind receiving members at asymmetric positions.

[0249] The shape of the wind receiving member can be configured in any shape such as a triangle, a quadrilateral, a trapezoid, a semi - circle, etc.

[0250] The arrangement method of a wave power generation device having any number of wind receiving members or mechanical fixing means or fitting groove structures for attaching any number of wind receiving members can be arranged in all modes of mooring, drifting, self - propelling, and towing.

[0251] All of the technologies related to the wave power generation device with a wind receiving member for vibration enhancement described so far, and the wave power generation means having a wind receiving member, can be applied to all embodiments of the power generation devices in this specification. Specifically, it can be applied to both an internal power storage type wave power generation device and a power extraction type wave power generation device.

[0252] Therefore, all embodiments of the power generation devices in this specification can be power generation devices having three types of power generation functions: a wind power generation function by a wind receiving member, a solar power generation function by sunlight, and a wave power generation function by waves.

[0253] (4) Wave power generation device with moving means (mooring / drifting / self-propelling / towing) The wave power generation device can perform wave power generation in a moored or drifting situation, so a moving ability (self-propelling ability) is not necessarily required. However, it is beneficial to provide a moving means for the wave power generation device itself in order to move for danger avoidance in a situation where a ship is approaching, or to move to a predetermined target position instructed from outside the wave power generation device.

[0254] Figure 28C shows a wave power generation device whose moving means is an aerial drone on water. Figure 28D shows a wave power generation device having a water jet type propulsion means. Figure 28E shows a wave power generation device having a propulsion means consisting of an electric motor and a screw.

[0255] One of the specific moving means is to provide a screw and an electric motor for driving the screw in the wave power generation device. If an electric rudder for direction control is provided in the wave power generation device, the traveling direction of the wave power generation device can be controlled. Also, if a pair of screws is provided and the rotation of each screw can be controlled, the traveling direction of the wave power generation device can be controlled. For example, when one screw is rotated while the other screw is stopped, the traveling direction of the wave power generation device bends toward the side of the stopped screw. To control the rotation of each screw, there are a method of providing a driving electric motor for each screw and a method of providing an electromagnetic clutch on each of the two screw shafts and selectively transmitting and controlling the rotational force of the electric motor to the screw shaft via the electromagnetic clutch. In each case, the electric motor for driving the screw, the electromagnetic clutch, the electric rudder, etc. use the secondary battery in the wave power generation device as a power source, and the (1) overall control unit or (2) artificial intelligence control unit of the control system controls via the (14) movement control unit.

[0256] The wave power generation device having a screw as a moving means directly exerts a propulsive force on seawater or fresh water with the screw protruding outside the housing of the wave power generation device, so that a moving force can be obtained efficiently.

[0257] As another moving means for the wave power generation device, a water jet engine mechanism such as that used in a water bike can be used. In this case, the water pumped up from underwater into the water duct is discharged forcefully from the rear jet outlet by an electric high-pressure pump (which rotates a screw provided in the water duct to move seawater or fresh water to the jet outlet), which is the power source, to obtain a propulsive force. Also in this case, similar to the case where the wave power generation device has a screw driven by an electric motor as a moving means, the secondary battery in the wave power generation device can be used as a power source, and the moving speed of the wave power generation device can be controlled by an electric signal.

[0258] The moving direction of the wave power generation device can be controlled by driving the rudder provided at the bottom of the wave power generation device with a driving source such as an electric motor. Also, a pair of water jet ports and an electric high-pressure pump are provided at a predetermined interval in the wave power generation device, and the moving direction of the wave power generation device can be controlled by providing a water jet force difference between the respective jet ports. For example, while ejecting water flow from the jet port with one electric high-pressure pump, if the other electric high-pressure pump is stopped to eliminate the water flow ejection from the jet port, the traveling direction of the wave power generation device can be controlled.

[0259] When the moving means of the wave power generation device is a water jet engine mechanism, the movable parts such as the screw can be prevented from being exposed outside the housing of the wave power generation device, so that the damage of the movable parts can be reduced. Therefore, the operation and movement of the wave power generation device are possible even in relatively shallow waters. Also, when the wave power generation device is landed on land or lifted onto a ship, there is an advantage that the movable parts such as the screw do not get in the way.

[0260] Other moving means provided in the wave power generation device include a water drone and an underwater drone. The water drone and the underwater drone have an electric motor as a power source and a secondary battery as a power source inside, and have a screw and an electric rudder outside, and have propulsion force and the ability to select the traveling direction. Instead of providing an electric rudder, a pair of screws can be provided, and the traveling direction of the drone can be controlled by the difference in the rotation speed of the screws. Also, it is possible to provide a pair of water jet engine mechanisms as described above to perform propulsion speed control and direction control.

[0261] The water drone and the underwater drone are connected to the wave power generation device by a rope and can pull and move the wave power generation device. If the control system provided in the wave power generation device described above is provided in the water drone and the underwater drone, the water drone and the underwater drone can be remotely controlled or autonomously moved.

[0262] In addition, when connecting an aerial drone or an underwater drone to a wave power generation device with a waterproof electrical cable, the aerial drone or the underwater drone can utilize the control system and the secondary battery as a power source within the wave power generation device. More specifically, connecting the secondary battery within the wave power generation device to the electric motor and electric rudder within the aerial drone or underwater drone with a waterproof electrical cable enables the power of the secondary battery within the wave power generation device to be used by the electric motor and electric rudder within the aerial drone or underwater drone. Also, by connecting the control system within the wave power generation device to the control system within the aerial drone or underwater drone with a waterproof electrical cable, the (1) overall control unit and (2) artificial intelligence control unit on the wave power generation device side can control or autonomously control the aerial drone or underwater drone.

[0263] The aerial drone or underwater drone and the wave power generation device are connected by a rope and a waterproof electrical cable, but it is desirable to make the strength of the rope stronger than that of the waterproof electrical cable and make the length of the waterproof electrical cable longer than that of the rope.

[0264] The rope and the waterproof electrical cable connecting the aerial drone or underwater drone and the wave power generation device can be integrated into a single cable to connect the aerial drone or underwater drone and the wave power generation device.

[0265] A wave power generation device having an aerial drone or an underwater drone as a means of movement can be connected by a rope to one or any number of wave power generation devices. In that case, a single aerial drone or underwater drone can move any number of multiple wave power generation devices.

[0266] For the method of floating a wave power generation device with a moving means on the water surface, it is possible to moor the device with a rope to a fixed object partially fixed to the seabed. In this case, wave power generation is usually performed by waves to charge the secondary battery in the wave power generation device. The wave power generation device can move within the range of the rope length as required. It can also move by receiving a movement instruction from outside the wave power generation device through a communication means such as satellite communication, or by autonomous control using program control or artificial intelligence within the wave power generation device.

[0267] There is also a method of floating a wave power generation device with a moving means on the water surface. While floating at the mercy of the flow of waves and tides, wave power generation is performed by waves to accumulate natural energy in the secondary battery in the wave power generation device. Since the control system of the wave power generation device is equipped with a GPS device and an antenna, the position of the wave power generation device during floating can be grasped even at a management center on land or on a ship. Also, the (2) artificial intelligence unit within the wave power generation device also knows its own position. The floating wave power generation device moves towards a predetermined position when the charging of the secondary battery exceeds a predetermined level, or when the floating goes out of or is about to go out of a predetermined area. The predetermined position can be a management center on land or on a ship, or a meeting place with a wave power generation device recovery ship. Also, in order to avoid encountering a typhoon or colliding with a ship, it can also move by remote control from a management center or by autonomous judgment by the (2) artificial intelligence unit. The wave power generation device with a moving means can be applied to both an internal power storage type wave power generation device and a power extraction type wave power generation device.

[0268] Next, other uses of the wave power generation device will be further explained.

[0269] (1) Marine mobile phone base station (moored) By providing an antenna for a mobile phone base station such as 4G or 5G, a mobile phone communication base station device, a wired cable for connecting this mobile phone communication base station device to a mobile base station on land, and a wireless communication device to the wave power generation device, a marine mobile phone base station can be operated.

[0270] Figures 29A to 29E show an embodiment in which a mobile phone base station is constructed using a wave power generation device. The mobile phone base station in Figure 29A is composed of an internal power storage type wave power generation device. The wave power generation device of the mobile phone base station having a mobile communication base station device and an antenna for a mobile phone base station can be relayed and connected to a mobile phone communication base station on land using a wired cable or a wireless communication device. The power required for operating the mobile phone base station on water can be provided by the power generation of the wave power generation device.

[0271] If an omnidirectional antenna for a mobile base station is installed near the top of wave power generation having a diameter of 4 m, a mobile phone communication relay cell with a radius of about 500 m to 2 km can be provided in all directions of 360 degrees.

[0272] If a wave power generation device having a mobile base station function is moored to a mooring means on a predetermined body of water, within a mobile phone communication relay cell with a radius of about 500 m to 2 km centered on the mooring location, a mobile phone can be used on a ship on water or on land near the water's edge. It is desirable to describe on the housing of the wave power generation device that becomes a mobile phone base station on water so that information capable of identifying a mobile carrier can be recognized. This is because the owner of the mobile terminal can determine the communication availability of the mobile terminal.

[0273] The wave power generation device having a mobile phone base station function on water may be installed in a relatively calm inner bay or lake. In an environment where these waves are small or few, it is desirable to add solar power generation means to supplement wave power generation, or to attach swing reinforcement members such as a wind receiving member and a weight to the housing of the wave power generation device to strengthen the swing of the wave power generation device by the wind.

[0274] It is desirable that the wind receiving member and the oscillation strengthening members such as weights be detachably attached to the wave power generation device. The number of the wind receiving members and weights can be any number of one or more. The shapes of the wind receiving members and weights can be selected from any shapes such as rectangular, trapezoidal, semi-circular, etc. The colors of the wind receiving members and weights may be the same color or a similar color as the color of the wave power generation device housing, or may be a color different from the color of the wave power generation device housing. The colors of the wind receiving members and weights are preferably fluorescent colors of the yellow or red series. The material of the wind receiving member is preferably composed of a metal such as stainless steel or aluminum, FRP, or a flame-retardant material such as polyvinyl chloride. Of course, both the solar power generation means and the means for strengthening the oscillation of the wave power generation device by wind can be provided in the wave power generation device.

[0275] For the installation of the solar power generation means, a solar panel can be installed at a high portion of the wave power generation device housing, or the housing of the wave power generation device can be constructed of transparent polyvinyl chloride and the solar power generation panel can be installed inside the power generation device housing. In these embodiments, the solar panel and the secondary battery for power storage are connected by a conductive cable in order to store the electrical energy generated by the solar panel in the secondary battery for power storage inside the wave power generation device.

[0276] The addition of such oscillation strengthening members and the addition of solar power generation means can also be applied in all the embodiments described in this specification.

[0277] So far, the wave power generation device used in the mobile phone base station on water has been described as an internal power storage type wave power generation device, but a combination of a power extraction type wave power generation device and a floating body power storage device can also be used. The floating body power storage device may be the same floating body power storage device as that shown in Fig. 39.

[0278] Embodiments of a mobile phone base station on water using a combination of a power extraction type wave power generation device and a floating body energy storage device are shown in FIGS. 29B and 29E. The electric power generated by the wave power generation means or the solar power generation means of the power extraction type wave power generation device is stored in the energy storage means inside the floating body energy storage device connected by a power transmission cable and a connection cable. The electric power consumed by the control system of the power extraction type wave power generation device and the mobile phone communication base station device is supplied from the energy storage means in the floating body energy storage device. Since the energy storage means in the floating body energy storage device has a larger energy storage capacity than the energy storage means of the internal energy storage type wave power generation device, it can withstand even if a calm wave situation continues for a long time. In the unlikely event that the stored power of the energy storage means inside the floating body energy storage device is about to run out, it is possible to notify the management center from the (3) communication control unit of the power extraction type wave power generation device or the control system equipped in the floating body energy storage device that there is a possibility of power shortage. The management center that has received the notification will tow a floating body energy storage device with sufficient power storage by ship and head towards the mobile phone base station on water. Then, the floating body energy storage device of the mobile phone base station on water can be replaced.

[0279] So far, the description has been made with one floating body energy storage device installed. However, it is also possible to increase and install as many as necessary, such as two or three. In this way, if the mobile phone base station on water is configured with a combination of a power extraction type wave power generation device and a floating body energy storage device, the power for operating the mobile phone base station on water will never run out semi-permanently.

[0280] Also, so far, the mobile phone base station on water has been described as using a combination of a power extraction type wave power generation device and a floating body energy storage device. However, it is also possible to use only the floating body energy storage device without using the wave power generation device. That is, it is also possible to remove the power extraction type wave power generation device from the embodiment of the mobile phone base station on water shown in FIG. 29E, directly moor the floating body energy storage device to the mooring means on water, and supply power directly from the floating body energy storage device to the mobile phone communication base station device. In that case, it is desirable that the floating body energy storage device has solar power generation means. Also, the floating body energy storage device may be the same floating body energy storage device as that shown in FIG. 39.

[0281] Furthermore, the floating body power storage device can be connected in parallel or in series in any number. When the power storage capacity of the floating body power storage device decreases, if a floating body power storage device with sufficient power storage is towed by a ship and headed towards a mobile base station on water, the floating body power storage device of the mobile base station on water can be replaced to address the situation.

[0282] As another modified embodiment of FIG. 29E, power supply to a mobile phone communication base station device (sub-base station) installed on a pillar provided on water shown in FIG. 29E can be provided from a DC battery, an AC power generation device, an AC power supply, etc. installed on land via a waterproof conductive cable. When supplying AC power from an AC power generation device or an AC power supply on land, it is converted into DC power by a power supply circuit provided in the mobile phone communication base station device (sub-base station).

[0283] In the case of this embodiment of supplying power from land, neither the wave power generation device nor the floating body power storage device shown in FIG. 29E is required.

[0284] FIG. 29C shows an embodiment of a mobile water-based mobile phone base station constructed by providing a mobile internal power storage type wave power generation device equipped with a means of movement with a mobile phone base station antenna for 4G, 5G, etc., a mobile phone communication base station device, and a wireless communication device for connecting this mobile phone communication base station on water and a mobile phone communication base station on land. The difference from FIG. 29A is that it is not moored by a mooring means. The mobile water-based mobile phone base station constructed with a mobile internal power storage type wave power generation device can be moved to a required location or move autonomously. As a result, it can provide mobile phone relaying in a wider area than a moored water-based mobile phone base station.

[0285] FIGS. 29D and 29E show an embodiment in which an omnidirectional antenna for a mobile phone base station such as 4G and 5G is installed on a pillar extending above the water surface from a fixed member fixedly installed on the bottom of the water as an artificial mooring means. By selecting the height of the pillar to an arbitrary height, a mobile phone communication relay cell of about several tens of km can be provided.

[0286] FIG. 29D shows that an omnidirectional antenna or a directional antenna for a mobile phone base station such as 4G or 5G is installed near the top of the column of the mooring means, and an internal storage type wave power generation device is moored to the mooring means. A waterproof cable connector as the input / output means shown in FIG. 23B is provided on the housing of this internal storage type wave power generation device. One end of a waterproof conductive cable, whose other end is connected to the aforementioned antenna, is connected to the outer male terminal of this waterproof cable connector. Also, the inner male terminal corresponding to the outer male terminal is connected to the (13) external option control unit option connector of the control unit of the wave power generation device by a waterproof conductive cable. As a result, the omnidirectional antenna for a mobile phone base station is connected to the (3) communication control unit of the control system of the wave power generation device.

[0287] The mobile phone communication base station device (4G / 5G transceiver) may be provided inside the housing of the wave power generation device, or as shown in FIG. 29E, it may be housed in a waterproof box and provided on the column of the mooring means. When provided on the column of the mooring means, the power supply to the mobile phone communication base station device (4G / 5G transceiver) is performed by a waterproof conductive cable from the power storage means built in the wave power generation device via a waterproof cable connector having a power extraction function. The relay connection between the mobile phone communication base station on land (parent base station) and the mobile phone communication base station device on the column (child base station) is either wireless communication (wireless entrance method) using a parabolic antenna, or as shown in FIG. 29E, optical communication is performed via a waterproof wired cable (optical fiber cable) connecting the mobile phone communication base station device (child base station) and the mobile phone communication base station on land (parent base station). When connecting the mobile phone communication base station device on the column (child base station) and the mobile phone communication base station on land (parent base station) by wireless communication (wireless entrance method) using a parabolic antenna, a parabolic antenna (not shown in the figure) is installed on the column shown in FIG. 29E, and relay is performed by wireless communication with the parabolic antenna installed at the mobile phone communication base station on land (parent base station).

[0288] When a mobile phone communication base station device is provided inside the wave power generation device housing, connect the mobile phone communication base station device to the (13) external option control unit option connector. The relay connection between the terrestrial mobile phone communication base station and the mobile phone communication base station device provided inside the wave power generation device is either wireless communication using the parabolic antenna provided in the wave power generation device, or a waterproof cable (optical fiber cable for optical communication) via a waterproof cable connector between the (13) external option control unit option connector of the wave power generation device and the terrestrial mobile phone communication base station.

[0289] Figure 29E shows a combination of a power extraction type wave power generation device and a floating body energy storage device instead of the internal energy storage type wave power generation device in the embodiment of Figure 29D, moored to a column extending above the water surface from a fixed member fixedly installed on the seabed. And an omnidirectional antenna or a directional antenna for a mobile phone base station such as 4G or 5G is installed near the top of the column, and a mobile phone communication base station device housed in a waterproof BOX is installed at an intermediate position of the column. The power supply to the mobile phone communication base station device and the power extraction type wave power generation device is supplied from the floating body energy storage device. In that case, as the waterproof cable connector provided in the power extraction type wave power generation device, the one shown in Figure 23D in which the power input / output means and the signal input / output means obtained by removing the backflow prevention means from the waterproof cable connector shown in Figure 23C are provided side by side may be used. In that case, the power generated by the power extraction type wave power generation device is stored in the energy storage means in the floating body energy storage device. And power supply to the inside of the power extraction type wave power generation device and power supply to the mobile phone communication base station device installed outside the power extraction type wave power generation device can be performed from the floating body energy storage device.

[0290] The relay connection between the terrestrial mobile phone communication base station and the waterborne mobile base station may be performed by wireless means using a parabolic antenna installed on a column extending above the water surface from a fixed member fixedly installed on the seabed, in the same manner as in the embodiment of Figure 29D.

[0291] (2) Marine weather and tidal current observation station (moored, self-propelled, towed) If a wave power generation device is equipped with sensors for meteorological observations (temperature, humidity, atmospheric pressure, wind force) and underwater sensors (tidal current velocity measurement sensor, tidal current direction sensor, water temperature, wave period sensor, wave height measurement sensor), an offshore meteorological and tidal current observation station can be established.

[0292] Figure 30 shows an embodiment in which an offshore meteorological observation station and an offshore tidal current observation station are constructed using a wave power generation device. A meteorological observation box containing sensors for meteorological observations is installed outside the housing of the wave power generation device. A high position (e.g., near the top) of the wave power generation device housing is suitable. On the other hand, the underwater sensors are arranged at a low position outside the wave power generation device housing. A position where the wave power generation device housing is submerged below the water surface when wave power generation is performed is suitable. A box containing underwater sensors can also be installed integrally with the housing at the position where the wave power generation device housing is submerged. Also, a waterproof electrical cable can be hung from the wave power generation device into the water for a predetermined length, and a box containing underwater sensors can be attached to the end thereof. In this case, data such as tidal current and water temperature at a predetermined depth can be obtained. Also, a plurality of underwater sensor boxes containing underwater sensors can be installed at different depths. In that case, respective tidal current data at different depths can be obtained.

[0293] The measurement data of the sensors for meteorological observations and underwater sensors can be used by the control system of the wave power generation device, or can be transmitted to a management center on land or on a ship via communication means such as satellite communication. The power used by the sensors for meteorological observations and underwater sensors, and the power for transmitting the measurement results to a management center on land or on a ship can be covered by the power generated by the wave power generation device. Therefore, meteorological observations and tidal current observations can be carried out offshore for a long period of time, not only for several months but also for over a year.

[0294] A wave power generation device having sensors for meteorological observation and sensors for tidal current can be detachably moored to a fixed object fixed at a specific position or an object (buoy or floating object) tied to a fixed object with a rope. Further, the wave power generation device having sensors for meteorological observation and sensors for tidal current can be allowed to drift on the water surface. Furthermore, a wave power generation device having sensors for meteorological observation and sensors for tidal current and having a self-propelling function can perform meteorological observation and tidal current observation while performing self-propelling and drifting.

[0295] A wave power generation device having sensors for meteorological observation and sensors for underwater has a (10) time management unit and a (3) communication control unit having various communication devices such as a GPS antenna and a satellite communication device. Therefore, the output data of the sensors for meteorological observation and the output data of the sensors for underwater can be sent to a management center installed on land or on a ship in association with the position data, date data, and time data of the wave power generation device. An internally rechargeable wave power generation device is suitable for this application.

[0296] (3) Fish aggregating lamp (mooring / self-propelling / towing) By providing one or a plurality of light emitting means at one position or any number of positions on the wave power generation device, it can be used as a fish aggregating means. If the position where the light emitting means is attached is arranged at a high place, fish can be aggregated over a wide area. It can be provided near the top of the wave power generation device housing, or a pillar or a pedestal can be provided near the top and the light emitting means can be provided at the tip thereof. On the other hand, if the light emitting means is provided at a position close to the water surface, stronger light can be projected into the water, so it is also effective to install it on the side or bottom of the wave power generation device housing. Furthermore, it is also effective to provide a light emitting means having a waterproof function at a position where the wave power generation device housing is submerged. In addition, a light emitting means having a waterproof function can be attached to a waterproof electric cable having a predetermined length and hung into the water from the wave power generation device.

[0297] Each of FIGS. 31A to 31G illustrates an embodiment in which the wave power generation device is used as a fish aggregating lamp.

[0298] Since the wave power generation device having a light emitting means has the above-described control system and a (7) lighting control unit, it is possible to control the ON / OFF of the light emission of the light emitting means, the light emission intensity, the light emission color, and the light emission mode (lighting, blinking, lighting with fluctuating light emission intensity, blinking with fluctuating light emission intensity). Further, since the wave power generation device has a secondary battery that stores electricity by wave power generation, it can cover not only the power consumed by the light emitting means but also the power consumed by the wave power generation device such as the (7) lighting control unit, the (3) communication control unit, the (10) time management unit, etc.

[0299] The wave power generation device with a fish aggregating function having a light emitting means can be placed on a fishing boat or towed by a rope to move to a fishing ground. In the fishing ground, it can be floated beside the fishing boat and the light emitting means can be made to emit light while generating wave power to aggregate fish. Also, it can be detachably moored to a fixed object provided on the water or a floating body such as a buoy, and wave power generation and light emission for fish aggregation can be carried out in parallel.

[0300] Furthermore, even without taking the wave power generation device with a fish aggregating function having a light emitting means to the fishing ground, fish can be aggregated at the installed location. For example, one or any number of wave power generation devices with a fish aggregating function having a light emitting means are moored and installed on the water about 100 m away from the shore. Then, jointly by the (7) lighting control unit and the (10) time management unit, the light emitting means can be made to emit light in various light emission modes every day from around sunset to dawn, so that a variety of fish can be aggregated around the wave power generation device. As a result, it is possible to turn an arbitrary place into a fishing ground or provide a leisure fishing place.

[0301] Also, the wave power generation device with a fish aggregating function having a light emitting means can be floated or moored and installed on the water surface inside a fish farm surrounded by a net. In the fish farm, at any time, the light emitting means can be controlled to emit light near the water surface or at an arbitrary depth to aggregate the cultured fish, so that efficient feeding can be carried out.

[0302] In addition, by controlling the brightness of the underwater light-emitting part, the lighting time, and the length of the lighting period by the aforementioned (7) lighting control unit to provide a predetermined light cycle, the cycle of day and night for the cultured fish can be shortened and the growth of the cultured fish can be promoted.

[0303] (4) Seawater tank feeding management and power supply system (mooring) Figure 32 shows a seawater tank system using a wave power generation device. For aquaculture facilities for culturing fish such as Thai fish, tuna, flounder, salmon, and sea bream, a seawater tank for fish culture composed of a float and a net is provided. In this seawater tank for fish culture, a feeding machine for feeding the cultured fish, an underwater high-definition (4K·8K) monitoring camera, underwater and surface lighting means, an underwater high-definition (4K·8K) camera, an underwater sensor box, a weather observation box incorporating a weather observation sensor, etc. are installed. The feeding machine has a programmable feeding function that self-executes a predetermined amount of feeding at predetermined time intervals or at each predetermined time by program control, and a remote operation feeding function that performs feeding of an arbitrary amount at an arbitrary timing by remote control via a communication path from the outside.

[0304] Power supply to electrical equipment such as these feeding machines, underwater and surface lighting means, underwater high-definition (4K·8K) cameras, surface high-definition (4K·8K) cameras, underwater sensor boxes, weather observation boxes, and the 5G mobile communication terminals for float installation described later, which are installed in the seawater tank for aquaculture and operate on electricity, can be performed directly or indirectly by the secondary battery for power storage built into the wave power generation device. When directly supplying power to the electrical equipment, it can be realized by directly connecting each electrical equipment installed in the seawater tank for aquaculture and operating on electricity and the secondary battery in the wave power generation device with a conductive cable for power supply. When indirectly supplying power to the electrical equipment, a secondary battery having a predetermined capacity is provided in the float part of the seawater tank for fish culture, the secondary battery on this float and each electrical equipment operating on electricity are connected with a conductive cable for power supply, and power is supplied from the secondary battery on the float to each electrical equipment. Then, in order to charge the secondary battery on this float, the secondary battery on the float and the secondary battery in the wave power generation device are connected with a conductive cable.

[0305] Alternatively, connection relay means is provided on the float, and the other end of a waterproof conductive cable connected to the waterproof cable connector, which is the power extraction means of the power extraction type wave power generator, is detachably connected thereto. Then, each electric device installed in the aquaculture cage and operating with power is detachably connected to the connection relay means on the float by a waterproof conductive cable. As a result, indirect power supply from the secondary battery in the wave power generator to each electric device on the float can be realized. The power extraction type wave power generator is moored to the float of the mooring means by one or a plurality of units.

[0306] In addition, each electric device installed in the aquaculture cage and operating with power is connected to the aforementioned control system provided in the wave power generator housing by a control signal cable, and electric signals can be transmitted and received to and from each other. Further, when the electric device has a wireless communication function such as Wi-Fi communication, signal and information communication can be performed wirelessly with the aforementioned control system in the wave power generator. For example, an underwater lighting means installed in the water in the aquaculture cage is connected to the (7) lighting control unit of the control system in the wave power generator by wire or wirelessly, and by controlling the brightness, lighting time, and length of the lighting time of the underwater light emitting part by the (7) lighting control unit to provide a predetermined light cycle, the cycle of day and night for the cultured fish can be shortened and the growth of the cultured fish can be promoted.

[0307] The feeder stores, for example, moist pellets or dry pellets made by solidifying fish meal or the like in a large-capacity tank of about 6000 liters, and drops a predetermined amount of moist pellets or dry pellets into the cage at predetermined intervals to feed the cultured fish. Important issues of the feeder are (1) long-term power supply to the feeder, (2) control of the feeding amount to the cultured fish, and (3) detection of the remaining amount of the pellet as food and fault diagnosis of the device.

[0308] (1) Regarding the issue of long-term power supply to the feeder, it can be achieved by increasing the capacity of the secondary battery installed in the float part of the fishpond. However, there are physical limitations in the float part, and there is a certain limit to the capacity of the secondary battery. Therefore, it can be solved by installing a power extraction type wave power generation device that can directly or indirectly supply power to the feeder in the aquaculture fishpond. A wave power generation device equipped with solar power generation means can ensure the power generation amount even when there are few waves. In addition, wave power generation with means for enhancing oscillation / vibration such as weights and wind receiving members, and wave power generation devices having both means for enhancing oscillation and solar power generation means can supply power more stably.

[0309] Furthermore, when more power is required, it can be achieved by mooring and installing the required number of power extraction type wave power generation devices in the aquaculture fishpond.

[0310] (2) The issue of optimizing the feeding amount control for farmed fish is an important issue both economically and from the perspective of environmental protection. Moist pellets and dry pellets, which are the feed for farmed fish, are expensive. Therefore, if they are supplied in excess so that the farmed fish leave some uneaten, or if they are supplied in a situation where the appetite and activity of the farmed fish are low (they do not eat dry pellets), it will result in waste and put pressure on the profits of the aquaculture business. In addition, the uneaten dry pellets will sink to the bottom of the water and pollute the environment.

[0311] Therefore, it is necessary to feed an optimal amount of dry pellets with little leftover food according to the appetite and feeding situation of the farmed fish. For this purpose, the feeding situation of the farmed fish in the fishpond is photographed from above the water or from underwater using a high-quality camera (a high-definition camera, or a high-quality camera such as 4K or 8K), and a person or artificial intelligence judges the appetite and activity status of the farmed fish from each imaging image, or both imaging images, and it is necessary to control the feeding amount to the farmed fish according to the judgment result. The high-quality camera installed above the water is installed at a position where an image of the feeding situation of the farmed fish is included within its angle of view. More specifically, it is desirable to install a high-quality camera installed above the water so that the position where the dry pellets fall from the feeder onto the water surface is approximately at the center of the angle of view of the high-quality camera installed above the water. Photographing the feeding situation of the farmed fish with the high-quality camera starts from the state before the paper feeding of the feeder starts. Then, after the feeding starts, time is measured while photographing the start situation of the farmed fish's feeding. As a result, measurement data regarding time such as when the feeding started, when the fish gathered, when the increase or peak of the farmed fish's feeding occurred, when the feeding began to decline, and when the feeding almost disappeared, etc., and the images of the feeding situation of the fish are recorded in association with each other, or transmitted to a 5G communication terminal provided in the fishpond management center, or transmitted to artificial intelligence means in the cloud or the wave power generation device.

[0312] The timing for the feeder to stop feeding is desirably after a predetermined time has elapsed since the feeding situation of the farmed fish has passed its peak and the feeding situation of the farmed fish has started to decline, and when there is still feeding by the farmed fish. It is also effective to perform control to reduce the feeding amount by a predetermined amount (for example, about 10%) once or multiple times when the feeding situation of the farmed fish reaches its peak or after a predetermined time has elapsed since it reached its peak, or when a predetermined time has elapsed since the feeding situation of the farmed fish has started to decline.

[0313] In the case of a high-definition image or a 4K image captured by a high-definition camera such as a high-definition quality camera or a 4K quality camera, a person or artificial intelligence can recognize, analyze, and evaluate in detail the feeding situation of the cultured fish when feeding the cultured fish. For example, a person or artificial intelligence can recognize, analyze, and evaluate in detail the feeding situation of the cultured fish, such as the situation where feeding is heading towards the peak, the situation where feeding is approximately at the peak, the situation where feeding has begun to decline, the situation where feeding is declining, the situation where feeding is heading towards the end, the situation where feeding is approximately over, etc.

[0314] The timing for the feeder to stop feeding is preferably the situation where feeding is heading towards the end or the situation where feeding is approximately over.

[0315] If a reference object (a scale-equipped measure or a fish body model of a predetermined size) for measuring the size of the cultured fish is installed within the viewing angle of the high-quality underwater (4K) camera, it becomes possible to measure the size (growth degree) of the cultured fish. If the image is stopped at a predetermined timing, more accurate measurement can be achieved. Therefore, the manager at the management center or the artificial intelligence can grasp the growth state of the aquaculture industry, which can be used as reference information for controlling the feeding amount of the feeder or as a material for judging the harvesting time of the cultured fish.

[0316] For example, an artificial intelligence system provided in an artificial intelligence unit (2) in a manager at a cage management center on the ground at a predetermined distance from the location where the aquaculture cage is located, within the cage management center, or on the cloud, or in a wave power generation device moored and installed in the aquaculture cage, can recognize, analyze, and evaluate in detail the feeding situation of the cultured fish when feeding the cultured fish. In addition, it can recognize, analyze, and evaluate in detail the growth degree and the size of the fish body of the cultured fish, and can also perform machine learning to derive the optimal feeding amount based on the data.

[0317] However, in order to transmit high-definition images with a large amount of information, such as high-definition images, 4K images, 8K images, etc. in real time, a 5G communication environment is required. Therefore, a high-definition image captured by a high-definition camera is transmitted from a 5G communication terminal installed on the float of the aquaculture cage or provided in the (3) communication control unit in the wave power generation device moored and installed in the aquaculture cage, via a 5G base station, to a 5G communication terminal provided in the cage management center. The 5G communication terminal of the cage management center provides or displays a high-definition image of the underwater or above-water feeding situation of the cultured fish when feeding the cultured fish to an artificial intelligence system in the cage management center or on the cloud, or a high-quality monitor visible to the administrator, almost in real time. When the artificial intelligence makes a judgment, it compares the sent high-definition image, environmental information such as water temperature, time information, fish body growth length (size of the fish body), and the machine-learned data learned from the high-definition image of the feeding situation of the cultured fish when feeding the cultured fish in the past, environmental information such as water temperature, time information, fish body growth length (size of the fish body), and can autonomously and automatically control the feeding timing and feeding amount. When a person in the cage management center makes a judgment, while observing a high-definition image related to the feeding situation of the cultured fish on a high-quality monitor in the cage management center almost in real time, referring to environmental information such as water temperature, image information related to the feeding situation and its changes, time information after the start of feeding, time information, fish body growth length, etc., the feeding amount control, feeding start timing, feeding stop timing, etc. of the feeder can be remotely controlled via a 5G communication environment.

[0318] (3)Regarding the issues of detecting the remaining amount of pellets as feed and diagnosing equipment failures, it can be solved by connecting the feeder and the (13) external option control unit in the wave power generation device with a control signal cable. Specifically, the output signal from the remaining amount detection sensor that detects the remaining amount of pellets in the feeder, and the output signals from the power supply, feeding motor, programmable controller, temperature sensor, etc. in the feeder can be sent via the control signal cable to the (13) external option control unit in the wave power generation device moored to the aquaculture cage. The (13) external option control unit sends those output signals sent from the feeder via the internal bus of the control system to the (11) management control unit that conducts failure diagnosis, the (1) overall control unit, and the (2) artificial intelligence unit, and can perform control according to the detection of the remaining amount of pellets, and conduct failure diagnosis of the feeder and its countermeasure control.

[0319] Note that the entire aquaculture cage may drift and its installation location may change. To move the entire aquaculture cage to a predetermined position, the entire aquaculture cage is tied to a manned ship or the like with a rope and moved by the moving means (screw) of the manned ship. However, by mooring one or more self-propelled wave power generation devices having self-propelled means such as screws or water jet engines to the aquaculture cage, it becomes possible to unmannedly move the entire aquaculture cage to an arbitrary position by remote control or autonomous control by artificial intelligence.

[0320] Note that if a wind power generation function by a wind receiving member and a solar power generation function by sunlight are additionally installed in the wave power generation device used in the aquaculture cage, it is possible to provide a power generation device that performs power generation by three types of natural energies in combination with the wave power generation function by waves, and it is possible to provide a power generation device that performs power generation more stably.

[0321] So far, in the (4) cage feeding management and power supply system (mooring), the power extraction type wave power generation device has been mainly described as the power means. However, instead of the power extraction type wave power generation device, one or more floating body energy storage devices or floating body energy storage devices having solar power generation means can also be used.

[0322] Next, an example of an assembly composed of a plurality of wave power generation devices will be described. (1) Connector and connecting means (rope) of wave power generation device The wave power generation device can be operated alone, but it is also possible to connect one or more arbitrary numbers of wave power generation devices and operate them collectively as a wave power generation device assembly.

[0323] FIG. 33 shows a connector of the wave power generation device and a connecting rope as the connecting means. Here, the connecting means is described by taking the case of a rope, but as long as it can be physically connected, it may be a chain or a rod-shaped member.

[0324] In preparation for the collective operation of wave power generation devices or the mooring of wave power generation devices, one or a plurality of connectors are provided on the housing of the wave power generation device. The connector has a ring portion having a predetermined size and a shaft portion integrally formed with the ring portion. A screw is cut on the side of the shaft portion without the ring. An opening into which the connector shaft portion can be inserted is provided at the connector attachment position of the wave power generation device housing. The connector shaft portion is inserted into this opening and fixed with a fixing nut from the inside of the wave power generation device housing. A waterproof packing is sandwiched between the fixing nut and the inside of the housing. A waterproof seal is applied with a waterproof sealing material between the aforementioned opening and the connector shaft portion. A waterproof packing is also sandwiched between the outside of the housing and the connector. In this way, the connector is attached to the wave power generation device housing with a waterproof structure.

[0325] The material of the connector has a predetermined strength and rust prevention property. For example, it is desirable to make it of stainless steel.

[0326] The number of connector attachment positions on the wave power generation device housing may be only one, but it is desirable to have a plurality. Also, it is desirable to have a plurality of heights of the connector attachment positions on the wave power generation device housing.

[0327] For example, it is desirable to attach connecting devices at about three to four locations at different height positions, such as positions about 30 cm higher or lower than the waterline, positions at about half the height of the wave power generation device housing, and positions near the top of the wave power generation device. Also, it is desirable to attach about two to four connecting devices at the same height position. This is because the optimal connection height is different when the wave power generation devices are moving in a group or when wave power generation is carried out in a group. Also, when wave power generation is carried out in a group, it may be possible to change the connection height of each wave power generation device according to the wave height.

[0328] The connecting means for detachably connecting the wave power generation devices includes a rope having a predetermined strength, and swivel-attached carabiners are attached to both ends of this rope. A swivel is a connecting part or connecting member having two connection points that can rotate freely with respect to each other. In fishing gear and the like, it is also called a "swivel". The swivel-attached carabiner can be detachably attached to the ring-shaped part of the connecting device. Also, the swivel attached to the carabiner allows the carabiner to rotate freely, so the swinging resistance during the swinging of the wave power generation device by the waves can be reduced. However, it is also possible to use a carabiner without a swivel.

[0329] This detachable connecting means for the wave power generation device and the connecting device for the wave power generation device housing can be used in all the embodiments described so far and all the embodiments to be described hereinafter for the wave power generation device and the floating body power storage device.

[0330] (2) Ship-towed type multiple wave power generation device assembly (assembly system) For example, any number of wave power generation devices can be detachably connected by a coupler and a connecting rope, and while towing a plurality of such wave power generation device assemblies by a ship, wave power generation can be carried out or the assemblies can be moved to any location. In this case, the ship may be a ship that moves using a fossil fuel engine that uses fossil fuel, but it is preferably an electric ship that rotationally drives a screw underwater with an electric motor. This electric ship is equipped with a rechargeable secondary battery, but it is desirable that the secondary battery in the wave power generation device and the secondary battery of the electric ship be detachably connected by a conductive cable so that the stored power of the secondary battery in the wave power generation device can be utilized.

[0331] FIG. 34 shows a situation where a ship is towing and moving a wave power generation device assembly in which a plurality of wave power generation devices are assembled. Each wave power generation device may be an internal energy storage type wave power generation device or a power extraction type wave power generation device.

[0332] In addition, if a wind power generation function by a wind receiving member or a solar power generation function by sunlight is additionally installed in the wave power generation device used in the multiple wave power generation device assembly system, it is possible to provide a power generation device that performs power generation by two or three types of natural energy in combination with the wave power generation function by waves.

[0333] (3) Floating mooring type multiple wave power generation device assembly system It is possible to perform wave power generation while drifting an assembly in which a plurality of wave power generation devices are connected, or it is also possible to perform wave power generation while being detachably moored to a floating mooring means on the water (a structure extending above the water surface from a fixed member fixedly installed on the bottom of the water, or a floating body connected by a rope or the like to a weight dropped to the bottom of the water). FIG. 35 shows a situation where a wave power generation device assembly is moored.

[0334] The mooring means is a structure such as a pile or a column extending above the water surface from a fixed member fixedly installed on the bottom of the water, and the float part moves vertically along the pile, column, etc. in response to fluctuations in the water level. Stoppers are provided at the upper ends of the pile, column, etc. to limit the upward movement of the float. (Mooring means A)

[0335] Other mooring means can also be composed of a float that is tied with a rope or the like from a weight or an anchor dropped to the bottom. In this case, an attachment part for detachably attaching the wave power generation device to the float is provided. (Mooring means B)

[0336] Depending on the size of the waves at the mooring location, various countermeasures can be considered. When the waves are large or the wave period is long, the rope connecting the wave power generation devices is connected with a connecting rope using a coupler at the height of approximately the center of the wave power generation device. On the other hand, when the waves are small or the wave period is short, it is also possible to connect the couplers at different heights of the wave power generation devices to each other with a connecting rope. For example, as shown in FIG. 32, a coupler at the highest position of the wave power generation device and a coupler at the lowest position of the adjacent wave power generation device are connected with a detachable connecting rope. By interconnecting the wave power generation devices with couplers at different heights in this way, under predetermined wave conditions, the rocking of the wave power generation device can be increased and the power generation efficiency can be enhanced.

[0337] In addition, if a wind power generation function by a wind receiving member, which is a rocking strengthening means, or a solar power generation function by sunlight is additionally installed in the wave power generation device used in the floating mooring type multiple wave power generation device assembly, it is possible to provide a power generation device that performs power generation by two or three types of natural energy in combination with the wave power generation function by waves, and power generation can be provided more stably.

[0338] Both an internal power storage type wave power generation device and a power extraction type wave power generation device can be used in the floating mooring type wave power generation device assembly.

[0339] When the charging of the secondary battery in the moored internal battery type wave power generation device reaches a predetermined amount, the electric ship heads towards the mooring location to recover or replace the wave power generation device assembly. The (4) charge / discharge and control management unit of the control system in the wave power generation device assembly system monitors the charging state of the secondary battery. When it detects that the charged amount has reached a predetermined level, it notifies the management center on land or on the ship to that effect via the (3) communication control unit. As a result, the management center sends the electric ship to the location where the wave power generation device assembly is moored to carry out the recovery or replacement of the wave power generation device assembly.

[0340] (4) A wave power generation device assembly system that supplies the power generated by a plurality of wave power generation devices to a secondary battery on land or a power transmission network via a power transmission cable Figures 36A, 36B, and 37 show a wave power generation device assembly system composed of a plurality of power extraction type wave power generation devices. A plurality of wave power generation devices are detachably moored to the mooring means with a rope having a swivel carabiner to construct a wave power generation device assembly system. When the water level fluctuates due to the rise and fall of the tide or the like, the float of the mooring means moves up and down in conjunction with the water level and floats on the water surface.

[0341] The power generated by the power generation mechanism of each wave power generation device is taken out from inside each wave power generation device by a waterproof cable connector, which is an example of power extraction means, or a waterproof conductive cable, and stored in secondary battery means installed on land or on a floating body, or sent to a power transmission network on land. One end of the waterproof conductive cable is connected to the power generation means of each wave power generation device, and the other end is connected to a waterproof cable connector, which is an example of power extraction means. Power is taken out by the waterproof conductive cable connected to the waterproof cable connector outside the housing of the wave power generation device and is connected to one end of the waterproof conductive cable passing through the water. The other end of the waterproof conductive cable passing through the water is connected to secondary battery means installed on land or to a power transmission network on land.

[0342] In a wave power generation device assembly of a plurality of power extraction type wave power generation devices, they are interconnected by a rope which is a connecting means for connecting between the wave power generation devices and a waterproof conductive cable which is a power transmission means between the wave power generation devices. In this case, the length of the connecting means and the length of the power transmission means may be substantially the same, or the connecting means may be longer, or the connecting means may be shorter. When the connecting means has higher strength than the power transmission means, it is desirable to make the power transmission means longer than the connecting means. This relationship between the lengths of the connecting means and the power transmission means is the same in the embodiments regarding all the wave power generation device assemblies of the plurality of power extraction type wave power generation devices.

[0343] In addition, for a wave power generation device used in a wave power generation device assembly that supplies the power generated by the wave power generation device to a secondary battery on land or a power transmission network via a power transmission cable, if a wind power generation function by a wind receiving member or a solar power generation function by sunlight is additionally installed, a power generation device that performs power generation by two or three types of natural energies in combination with the wave power generation function by waves can be provided, and a power generation device that performs power generation more stably can be provided.

[0344] It is desirable to provide a light emitting means having a color such as red or yellow to each wave power generation device and mooring means to avoid collision with other ships.

[0345] (5) A wave power generation device assembly system that stores the power generated by a plurality of wave power generation devices in a power storage means (secondary battery) on a float FIG. 38 shows a wave power device assembly system that moors a wave power generation device assembly composed of a plurality of power extraction type wave power generation devices to a mooring means and stores the power generated by each power extraction type wave power generation device in a power storage means provided on a float.

[0346] A plurality of wave power generation devices are detachably moored to a mooring means with a swiveled shackle using a rope to construct a wave power generation device assembly system. When the water level fluctuates due to the ebb and flow of the tide or the like, the float of the mooring means moves up and down in conjunction with the water level and floats on the water surface. A secondary battery, which is a power storage means having a sufficient power storage capacity to store the power generated by the plurality of wave power generation devices on this float, is detachably installed. The power generated by the power generation means of each wave power generation device is drawn out from inside the wave power generation device by a waterproof conductive cable and stored in the secondary battery means, which is the power storage means installed on the float. The secondary battery on the float has a waterproof structure. It is desirable that the connection and disconnection between each wave power generation device and the secondary battery on the float by the waterproof conductive cable can be performed by hot swap or cold swap.

[0347] In addition, if a wind power generation function by a wind receiving member or a solar power generation function by sunlight is additionally installed in the wave power generation device used in the wave power generation device assembly system that stores the power generated by the wave power generation device in the secondary battery on the float, it is possible to provide a power generation device that performs power generation by two or three types of natural energy in combination with the wave power generation function by waves, and it is possible to provide a power generation device that performs power generation more stably.

[0348] When the charging of the secondary battery on the float reaches a predetermined amount, the electric boat heads to the mooring location to recover or replace the secondary battery on the float. The (4) charge and discharge control management unit of the control system in the wave power generation device assembly system monitors the charging state of the secondary battery on the float, and when it detects that the charge amount has reached a predetermined level, it notifies the management center on land or on the ship to that effect via the (3) communication control unit. As a result, the management center sends the electric boat to the location where the wave power generation device assembly is moored to recover the wave power generation device assembly.

[0349] It is desirable to provide light emitting means having colors such as red and yellow on each wave power generation device and mooring means to avoid collision with other ships.

[0350] (6) Wave power generation device assembly system having a floating body energy storage device FIG. 39 shows a wave power generation device assembly system comprising a wave power generation device assembly composed of a plurality of power extraction type wave power generation devices and a floating body energy storage device.

[0351] In the above-described wave power generation device assembly system, the electric power generated by each wave power generation device was stored in a secondary battery detachably provided on the float. Instead of the storage battery provided on this float, a floating body energy storage device provided with a power storage means such as a secondary battery is constructed on a floating body formed by removing the power generation means from inside the housing of the wave power generation device. A waterproof cable connector, which is a power extraction means, is provided on the floating body energy storage device housing, and the waterproof cable connector and the power storage means provided inside the floating body energy storage device housing are connected by a waterproof conductive cable. As the waterproof cable connector provided on the floating body energy storage device, a waterproof cable connector without a backflow prevention means is used. Further, the outer terminal of the waterproof cable connector provided on the floating body energy storage device housing and the outer terminal of the waterproof cable connector of the power extraction type wave power generation device are detachably connected directly or indirectly by a waterproof conductive cable. When connecting indirectly, the power extraction type wave power generation device and the floating body energy storage device are electrically connected via connection relay means existing between the power extraction type wave power generation device assembly and the floating body energy storage device.

[0352] As a result, the electric power generated by the power extraction type wave power generation device or the power extraction type wave power generation device assembly can be stored in the power storage means inside the floating body energy storage device housing.

[0353] Note that the shape of the floating body may be the one illustrated in FIG. 20, or may be other shapes (for example, ship shape).

[0354] One or any number of floating body power storage devices having power storage means therein are detachably moored to mooring means. The connection between the power extraction type wave power generator and the floating body power storage device by a waterproof conductive cable may be a direct connection or an indirect connection. In the case of an indirect connection, the waterproof conductive cable from the power extraction type wave power generator is detachably connected to a connection relay, which is a connection relay means, and the waterproof conductive cable from the floating body power storage device is detachably connected to this connection relay to realize a detachable electrical connection between the power extraction type wave power generator and the floating body power storage device.

[0355] The configuration on the side of each power extraction type wave power generator is the same as that in the above-described embodiment (5). For example, it is desirable that the connection and disconnection of each wave power generator and the floating body power storage device by a waterproof conductive cable can be performed by hot swapping that can be detached even in an energized state or cold swapping that is performed in a power-off state.

[0356] The secondary battery, which is the power storage means, may be installed on the floating body housing or inside the floating body housing. For example, a secondary battery, which is the power storage means, can be provided inside the same housing as the wave power generator. If the power generation means is removed from the inside of the housing of the wave power generator to construct a floating body power storage device, a sufficiently large secondary battery, which is the power storage means, can be installed in a waterproof state. The housings of the floating body power storage device and the wave power generator can also be configured with the same shape, the same size, and the same material. It is desirable to apply identification information for identifying each of them or a specific coloring that can be identified to the housing.

[0357] In addition, if a wind power generation function by a wind receiving member or a solar power generation function by sunlight is additionally installed in the wave power generator used in the wave power generator assembly system having a floating body power storage device, a power generation device that performs power generation by two or three types of natural energy in combination with the wave power generation function by waves can be provided, and a power generation device that performs power generation more stably can be provided.

[0358] Furthermore, it is even better to install the aforementioned solar power generation means on the floating body power storage device so that it can be stored in the power storage means in the floating body power storage device.

[0359] Also, if the same control system as that of the wave power generation device is installed in the floating body power storage device, almost the same control as that of the wave power generation device can also be implemented in the floating body battery unit. For example, if the (4) charge / discharge and control management unit of the control system in the floating body power storage device monitors the charging state of the secondary battery in the floating body secondary battery unit and detects that the charge amount has reached a predetermined level, it notifies the management center on land or on board from the floating body secondary battery unit via the (3) communication control unit to that effect. As a result, the management center can direct the electric ship to the location where the wave power generation device assembly is moored for the recovery and replacement of the floating body power storage device.

[0360] (7) Multiple wave power generation device assembly system having a self-mobile floating body power storage device Figure 40 shows a wave power generation device assembly system having a self-mobile floating body power storage device. Here, the wave power generation device assembly floating body is an assembly of power extraction type wave power generation devices. As self-propulsion means for the floating body power storage device, an electric motor and a screw driven by this electric motor can be provided, or the aforementioned water jet engine can be provided to construct a self-mobile floating body power storage device having self-propulsion means. Since the floating body power storage device has the same control system as the control system built into the wave power generation device, autonomous movement control is possible using the (1) overall control unit, (2) artificial intelligence unit, (3) communication control unit, etc.

[0361] Furthermore, if a connection means that can be remotely controlled to connect and disconnect is provided to the connection relay means provided on the float of the mooring means, the self-mobile floating power storage device can be remotely controlled to disconnect and connect to the connection relay means of a plurality of wave power generation integrated systems that are moored. When a predetermined amount of power storage is performed in the power storage means in the self-mobile floating power storage device connected to the plurality of moored wave power generation integrated systems, the connection between the self-mobile floating power storage device and the connection relay means is released, and it moves toward an onshore base or a ship. On the other hand, another self-mobile floating power storage device having power storage means capable of power storage moves autonomously to the wave power generation device aggregate system, connects to the connection relay means, and stores the power generated by the wave power generation device in the power storage means in the self-mobile floating power storage device.

[0362] In addition, if a wind power generation function by a wind receiving member or a solar power generation function by sunlight is additionally installed in the wave power generation device used in the wave power generation device aggregate system having a self-mobile floating power storage device, it is possible to provide a power generation device that generates electricity by two or three types of natural energy in combination with the wave power generation function by waves, and it is possible to provide a power generation device that performs power generation more stably. Furthermore, it is better to install the above-mentioned solar power generation means in the self-mobile floating power storage device so that it can be stored in the power storage means in the floating power storage device.

[0363] This wave power generation device aggregate system having a floating power storage device can accumulate and recover the electrical energy generated by a plurality of wave power generation devices in a single or a plurality of floating power storage devices, so the recovery efficiency of the electrical energy generated by the plurality of wave power generation devices can be dramatically increased.

[0364] This wave power generation device aggregate system having a floating power storage device can be used alone, but it can also be arranged and operated by combining a plurality of sets of wave power generation device aggregate systems having floating power storage devices.

[0365] (8) Self-mobile wave power generation device aggregate Figures 41A and 41B show a self - movable wave - power generation device assembly system. Figure 41A shows a self - movable wave - power generation assembly system that combines an internal - power - storage - type wave - power generation device assembly and a wave - power generation device having moving means. Figure 41B shows a self - movable wave - power generation assembly system that combines a power - extraction - type wave - power generation device assembly, a wave - power generation device having moving means, and a floating - body power - storage device having moving means.

[0366] When one or more arbitrary numbers of moving means are provided in a wave - power generation device assembly composed of a plurality of wave - power generation devices, a self - movable wave - power generation device assembly can be constructed.

[0367] An example of the moving means is an aerial drone or an underwater drone. If an aerial drone or an underwater drone is detachably connected to a wave - power generation device assembly composed of a plurality of wave - power generation devices by a connecting rope, the wave - power generation device assembly can move.

[0368] If the propulsion electric motor provided in an aerial drone or an underwater drone and the secondary battery in the wave - power generation device to be towed are connected by a waterproof conductive cable, it can move semi - permanently. This is because, as a result of movement, even if the power stored in the secondary battery in the wave - power generation device is exhausted, after a predetermined time has elapsed, power is accumulated in the secondary battery in the wave - power generation device by wave - power generation.

[0369] Another example of the moving means is a self - movable wave - power generation device incorporating a screw and an electric motor for driving the screw. As another example, there is a wave - power generation device having a water - jet engine mechanism. The self - movable wave - power generation device having this water - jet engine mechanism obtains propulsion force by discharging water pumped from underwater forcefully from a rear jet port with an electric high - pressure pump as a power source.

[0370] Replacing any arbitrary number of one or more of the wave power generation device assemblies composed of a plurality of wave power generation devices with self - movable wave power generation devices enables the construction of a self - movable wave power generation device assembly system.

[0371] For example, it is desirable to make the wave power generation devices at both ends of a wave power generation device assembly system in which a plurality of wave power generation devices are connected by a connecting rope into self - movable wave power generation devices. Such a wave power generation device assembly system has the following advantages. · Since there are a plurality of self - movable wave power generation devices, while one is moving, the other can be charged. If they alternate in taking on the movement, the continuous cruising distance can extend to approximately infinity. · Since there are self - movable wave power generation devices at both ends, the direction can be quickly changed. When changing the traveling direction by 180 degrees, it can be done instantaneously by switching the wave power generation device responsible for the movement. This is an important function for avoiding collisions with other ships. · Since there are a plurality of self - movable wave power generation devices, even if one fails, it can continue to move. · Since there are a plurality of self - movable wave power generation devices, even if the connecting rope breaks and it is divided into two groups, each group can move to a predetermined position with the self - movable wave power generation devices.

[0372] Note that the types of self - movable wave power generation devices may be the same or different. Also, all the wave power generation devices constituting the wave power generation device assembly system may be self - movable wave power generation devices.

[0373] Also, the electric power generated by the power generation means of each wave power generation device can be drawn out from inside each wave power generation device by a waterproof conductive cable and stored in the power storage means in the floating body power storage device. In this case, one end of the waterproof conductive cable is connected to the power generation mechanism of each wave power generation device, and the other end of the waterproof conductive cable is connected to the power storage means in the floating body power storage device.

[0374] This floating body power storage device may be a self-mobile type floating body power storage device having self-propelling means, or a floating body power storage device having solar power generation means.

[0375] Next, an example of an offshore power station will be described.

[0376] (1) An offshore power station in which a wave power generation device assembly system is moored in parallel Figure 42A shows a parallel mooring arrangement of a wave power generation device assembly in which a wave power generation device assembly system composed of a predetermined number of wave power generation devices is arranged in parallel and moored. The mooring means detachably attaches and arranges the wave power generation device assembly. The wave power generation device of the wave power generation device assembly may be an internal power storage type wave power generation device or a power extraction type wave power generation device.

[0377] In the case of a power extraction type wave power generation device, a floating body power storage device is also connected to the wave power generation device assembly as shown in the wave power generation device assembly system in the middle of Figure 42A. When the power storage in the power storage means built into this floating body power storage device exceeds a predetermined amount, the floating body power storage device is removed from the mooring means and recovered by a ship or the like, or the power is transferred to the power storage means placed on the ship. When a ship or the like is going to recover the floating body power storage device, it is desirable to tow or carry a replacement floating body power storage device on board.

[0378] Also, in the case of a power extraction type wave power generation device, power can also be transmitted from the wave power generation device assembly to an onshore facility via a submarine power cable as shown in the wave power generation device assembly system in the lower part of Figure 42A. In this case, the transmitted power is stored in the power storage means installed on land or transmitted to the power grid.

[0379] If a wind power generation function by a wind receiving member or a solar power generation function by sunlight is additionally installed in a wave power generation device used for parallel mooring of a wave power generation device assembly system, it is possible to provide a power generation device that performs power generation by two or three types of natural energies in addition to the wave power generation function by waves, and it is possible to provide a power generation device that performs power generation more stably. In addition, it is desirable to provide a light emitting means having a warning color such as red or yellow to each wave power generation device and mooring means in order to avoid collision with other ships.

[0380] (2) Offshore power station with continuous mooring of wave power generation device assembly Figure 42B shows an offshore power station provided with a plurality of stages of continuous mooring of a wave power generation device assembly in which the mooring of a plurality of wave power generation device assemblies composed of a predetermined number of wave power generation devices is continuously arranged. The mooring means detachably attaches and arranges one or a plurality of wave power generation device assemblies. The wave power generation devices constituting the wave power generation device assembly may be internal power storage type wave power generation devices or power extraction type wave power generation devices.

[0381] In the case of a power extraction type wave power generation device, a floating body power storage device is also connected to the wave power generation device assembly as in the wave power generation device assembly system shown in the upper two stages of Figure 42B. When the power storage in the power storage means built in this floating body power storage device exceeds a predetermined amount, the floating body power storage device is removed from the mooring means and recovered by a ship or the like, or the power is transferred to the power storage means placed on the ship. When a ship or the like heads for recovering the floating body power storage device, it is desirable to tow and carry a replacement floating body power storage device.

[0382] In addition, in the case of a power extraction type wave power generation device, although not shown in Figure 42B, as shown in the lower stage of Figure 42A, power can also be transmitted from the wave power generation device assembly to an onshore facility via a submarine power cable. In this case, the transmitted power is stored in the power storage means installed on land or transmitted to the power grid.

[0383] Some mooring means can also moor a plurality of wave power generation device assemblies.

[0384] For a wave power generation device used in an offshore power station where moorings of a wave power generation device assembly are continuously arranged, if a wind power generation function by a wind receiving member and a solar power generation function by sunlight are additionally installed, it is possible to provide a power generation device that performs power generation by two or three types of natural energies in combination with the wave power generation function by waves, and the power generation can be performed more stably. In addition, it is desirable to provide each wave power generation device and mooring means with a light emitting means having a warning color such as red or yellow to avoid collision with other ships.

[0385] (3) Drifting type offshore (ocean) power station For example, in an environment where one wave power generation device with a diameter of 4m, a power generation efficiency of 30%, and a power generation capacity of 10kwh operates for an average of 15 hours a day, when wave power generation is performed, a power generation amount of 150kw (equivalent to 10 ordinary households) can be realized in one day.

[0386] A predetermined number of these wave power generation devices can be detachably connected by the above-mentioned connecting means to form and operate an assembly of wave power generation devices. For example, 100 wave power generation devices with a diameter of 4m are detachably connected at 10m intervals by the above-mentioned connecting means. Then, if 100 rows of assemblies composed of these 100 wave power generation devices are detachably connected to each other at 10m intervals, an assembly of 10,000 wave power generation devices can be formed. For an offshore power station (with an area of 1km×1Km) composed of this assembly of 10,000 wave power generation devices, if the power generation of each wave power generation device per day is 150kw, the total will be 1.5 million kw, exceeding the power generation capacity of one nuclear power plant. Since the surrounding waters of Japan have an area of about 4.5 million square kilometers, it is also possible to connect about 100 assemblies of these 10,000 wave power generation devices to construct an offshore power station (with an area of 10km×10km) composed of an assembly of 1 million wave power generation devices.

[0387] Figure 43A shows a floating type offshore power station. The wave power generation devices that make up the wave power generation device assembly may be internal storage type wave power generation devices or power extraction type wave power generation devices. In the case of a power extraction type wave power generation device, it is desirable to connect a floating body energy storage device to the wave power generation device assembly as in the wave power generation device assembly system shown in Figure 43A.

[0388] Wave power generation can be carried out while drifting a wave power generation device assembly composed of a predetermined number of wave power generation devices or an offshore power station on the order of 10,000 units. Alternatively, wave power generation can also be carried out while towing an offshore power station...

Claims

1. A floating body part, a plurality of rotating shaft parts supported by the floating body part and having different axial directions from each other, a common pendulum part that performs pendulum motion around the axis of each of the plurality of rotating shaft parts, a power generation part that generates power by the pendulum motion of the common pendulum part around the axis of each rotating shaft part, A wave power generation device, characterized by comprising the above.

2. In the wave power generation device according to Claim 1, a first support part that supports the common pendulum part so as to be able to perform pendulum motion around the axis of one of the plurality of rotating shaft parts, a second support part that supports the first support part so as to be able to perform pendulum motion around the axis of the other rotating shaft part among the plurality of rotating shaft parts, A wave power generation device characterized by comprising:

3. In the wave power generation device according to Claim 1 or 2, The power generation part is an input shaft that repeats forward and reverse rotations by the pendulum motion of the common pendulum part around the axis of at least one rotating shaft part, one input bevel gear provided on the input shaft, an output shaft extending in a direction orthogonal to the axial direction of the input shaft, a pair of output bevel gears provided on the output shaft and facing each other, It has a rotation transmission mechanism including a one-way rotation transmission part provided between each of the pair of output bevel gears and the output shaft, The rotation transmission mechanism is configured such that the input bevel gear meshes with all of the pair of output bevel gears. When the input shaft rotates forward, one of the pair of output bevel gears rotates the output shaft in a specified direction through the one-way rotation transmission part, and the other output bevel gear idles. And when the input shaft rotates reversely, the other output bevel gear rotates the output shaft in the specified direction through the one-way rotation transmission part, and the one output bevel gear idles. A wave power generation device characterized by the above.

4. In the wave power generation device according to Claim 3, The rotation transmission mechanism has a flywheel on the output shaft or on the downstream side in the rotation transmission direction from the output shaft. A wave power generation device characterized by the above.

5. In the wave power generation device according to Claim 1 or 2, The plurality of rotating shaft parts are two rotating shaft parts whose axial directions are orthogonal to each other. A wave power generation device characterized by the above.

6. In the wave power generation device according to Claim 1 or 2, The floating body part includes a wave receiving part arranged so as to surround the periphery of the outer side surface. A wave power generation device characterized by the above.

7. In the wave power generation device according to Claim 1 or 2, The common pendulum part has a power storage part, and the wave power generation device is characterized by this.

8. In the wave power generation device according to claim 1 or 2, a pendulum speed increasing part that applies a driving force when the pendulum motion of the common pendulum part folds back from the top dead point around the axis of at least one of the plurality of rotating shaft parts, and increases the speed of the common pendulum part, and the wave power generation device is characterized by this.

9. In the wave power generation device according to claim 1 or 2, a weight displacement mechanism that displaces a weight part arranged on the common pendulum part in a direction of approaching and separating from the plurality of rotating shaft parts, and the wave power generation device is characterized by this.

10. In the wave power generation device according to claim 9, a motion detection part that detects the motion of the floating body part; a control part that displaces the weight part by the weight displacement mechanism so that the amplitude of the pendulum motion of the common pendulum part around the axis of at least one of the plurality of rotating shaft parts increases based on the detection result of the motion detection part, and the wave power generation device is characterized by including these.

11. In the wave power generation device according to claim 1 or 2, the power generation part includes a plurality of power generation mechanism parts that generate power for each of the plurality of rotating shaft parts; the plurality of power generation mechanism parts are arranged along a direction orthogonal to any of the axial directions of the plurality of rotating shaft parts, and the wave power generation device is characterized by this.

12. In the wave power generation device according to claim 1 or 2, the power generation part includes a plurality of power generation mechanism parts that generate power for each of the plurality of rotating shaft parts; the plurality of power generation mechanism parts are arranged along a plane including the axial directions of the plurality of rotating shaft parts, and the wave power generation device is characterized by this.

13. A rotary transmission device that transmits a rotational force from an input shaft that repeats forward and reverse rotations inputted to an output shaft that extends in a direction orthogonal to the axial direction of the input shaft, one input bevel gear provided on the input shaft; a pair of output bevel gears provided on the output shaft and facing each other; a one-way rotary transmission part provided between each of the pair of output bevel gears and the output shaft, and includes these; the input bevel gear is configured to mesh with all of the pair of output bevel gears. When the input shaft rotates forward, one of the pair of output bevel gears rotates the output shaft in a specified direction via the one-way rotation transmission portion, and the other output bevel gear idles. When the input shaft rotates reversely, the other output bevel gear rotates the output shaft in the specified direction via the one-way rotation transmission portion, and the one output bevel gear idles. A rotation transmission device characterized by this.

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