A multi-modal box wave energy device integrating wave breaking and photovoltaics

Abstract

This invention discloses a multi-mode box-type wave energy generation device integrating wave absorption and photovoltaics. It includes multiple floating boxes, each housing an oscillating float-type power generation device, a rotary PTO power generation device, a magnetic induction power generation device, and an energy storage device. A photovoltaic device is installed on the upper surface of the floating box. Small holes are formed in the outer wall of the floating box. The rotary PTO power generation device is located inside the floating box. The oscillating float-type PTO power generation device is located below the floating box, parallel to the rotary PTO power generation device. It includes a central column for the oscillating float-type device, within which a magnetic induction coil and a magnetic column are installed. This device integrates the oscillating float-type power generation device and the magnetic induction power generation device, saving space. The rotary PTO power generation device can utilize wave energy in both vertical and horizontal directions to achieve multi-degree-of-freedom power generation, improving the wave absorption and wave absorption performance of the device while overcoming the drawback of photovoltaic panel installation being highly dependent on sea conditions.

Description

Technical Field

[0001] This invention belongs to the field of wave energy conversion devices and relates to a multi-mode box-type wave energy power generation device that integrates wave damping and photovoltaics. Background Technology

[0002] With global climate change and ever-increasing energy demand, renewable energy has become an inevitable choice for future energy development. Marine renewable energy, including wave energy, wind energy, and solar energy, is attracting increasing attention due to its abundant resources and wide distribution. Offshore photovoltaic (PV) power generation, with its advantages of not occupying land resources and being close to load centers along the eastern coast, has become an important component of the energy transition strategy and is entering a period of rapid development. However, the large-scale application of offshore PV systems still faces many technical challenges, the most prominent of which is adaptability to the marine wave environment. Unlike terrestrial PV, offshore PV systems must withstand the cyclical impact of waves and extreme sea conditions over a long period, resulting in higher construction costs and more difficult and costly maintenance and repair in the later stages. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to provide a multi-mode box-type wave energy generation device that integrates wave damping and photovoltaics to solve the problem of adaptability to marine wave environments.

[0004] The technical solution of the present invention is: a multi-mode box-type wave energy generation device integrating wave damping and photovoltaics, comprising multiple square-shaped floating boxes, wherein an oscillating float-type power generation device and a rotary PTO power generation device are installed inside each floating box. The oscillating float power generation device includes a circular float plate, an oscillating float device central column is installed on the float plate, and an energy storage device is installed at the top of the oscillating float device central column. The rotary PTO power generation device includes an energy storage device fixedly mounted on the central column of an oscillating float device. A rotary wheel adapted to the energy storage device is movably installed on the outer wall of the central column of the oscillating float device and at the upper end of the energy storage device.

[0005] Furthermore, a magnetic induction power generation device is sealed and assembled inside the central column of the oscillating float device. The magnetic induction power generation device includes a magnetic induction coil and a magnetic column, and the magnetic induction coil is connected to the energy storage device.

[0006] Furthermore, the energy storage device is located inside the float box at the top of the central column of the oscillating float device. The energy storage device uses a supercapacitor to store electrical energy and is simultaneously connected to the oscillating float power generation device, the rotary PTO power generation device, and the magnetic induction power generation device.

[0007] Furthermore, six oscillating float PTO generators are evenly distributed around the central column of the oscillating float device on the float plate. The lower part of the six oscillating float PTO generators is fixed to the float plate, and the upper part is fixed to the energy storage device.

[0008] Furthermore, a connector is connected to the outer wall of the energy storage device. The connector consists of eight trusses, one end of which is connected to the energy storage device, and the other end is fixed to the inner surface of the floating box. Gaps for wave penetration are also provided between the eight trusses of the connector.

[0009] Furthermore, four rotary power generation devices (PTO generators) are installed on the top of the rotor, and the upper output ends of the four rotary power generation devices (PTO generators) are connected to the lower wall of the energy storage device.

[0010] Furthermore, four PTO generators on oscillating float devices are connected to the side of the energy storage device, and the other end of the four PTO generators on oscillating float devices is fixed to the inner wall of the float box.

[0011] Furthermore, a photovoltaic device is installed on the outer side of the upper wall of the pontoon. The photovoltaic device includes a photovoltaic energy storage device installed on the pontoon. A photovoltaic column is installed at the upper end of the photovoltaic energy storage device. A photovoltaic brace is installed at the upper end of the photovoltaic column. A photovoltaic panel is installed at the upper end of the photovoltaic brace.

[0012] Furthermore, the float plate is installed below inside the float box and is placed parallel to the rotary PTO power generation device.

[0013] Furthermore, several small holes are provided in the middle of the wall of each of the floating boxes, and the rotating wheel is directly opposite the small holes (6). The small hole is cone-shaped, with a larger outer diameter and a smaller inner diameter, and its opening ratio is 18%.

[0014] Furthermore, the lower part of the pontoon is a cylindrical cavity; multiple pontoons are arranged in an array on the sea surface.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: The present invention integrates the oscillating float-type power generation device and the magnetic induction power generation device into a single design, saving space. The set rotary PTO power generation device can utilize wave energy in both vertical and horizontal directions to achieve multi-degree-of-freedom power generation, making full use of wave energy to convert into electrical energy. This not only improves the wave absorption and wave dissipation performance of the device, but also overcomes the disadvantage of photovoltaic panel installation being subject to high sea conditions. It can reduce the overall cost of photovoltaic system construction and is in line with the development concept of marine engineering equipment expanding into deep sea. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the overall structure of the present invention; Figure 2 This is a perspective view of the present invention; Figure 3 This is a cross-sectional view of the oscillating float-type power generation device and the magnetic induction power generation device in this invention; Figure 4 This is an installation diagram of the oscillating float-type power generation device, the rotary PTO power generation device, and the energy storage device in this invention; Figure 5 This is a side cross-sectional view of the present invention; Figure 6 This is a three-dimensional view of the array arrangement of multiple floating boxes in this invention; In the diagram: 1 is the pontoon, 2 is the photovoltaic panel, 3 is the photovoltaic column, 4 is the photovoltaic brace, 5 is the photovoltaic energy storage device, 6 is the small hole, 7 is the floating plate, 8 is the PTO generator on the oscillating float device, 9 is the magnetic induction coil, 10 is the central column of the oscillating float device, 11 is the PTO generator of the rotary generator, 12 is the rotary wheel, 13 is the connector, 14 is the PTO generator under the oscillating float device, 15 is the energy storage device, 16 is the magnetic column, and 17 is the energy storage device. Detailed Implementation

[0017] The specific technical solution of the present invention will be further described in detail below with reference to specific examples.

[0018] As shown in the figure, the multi-mode box-type wave energy generation device integrating wave damping and photovoltaic according to the present invention includes multiple floating boxes 1. A cylindrical cavity is opened at the bottom of the interior of each floating box 1. An oscillating float-type power generation device, a rotary PTO power generation device, a magnetic induction power generation device, and an energy storage device 15 are respectively installed inside the floating box 1. The rotary PTO power generation device is installed in the middle of the float box 1. The oscillating float power generation device is installed below the float box 1 and is placed parallel to the rotary PTO power generation device. The oscillating float power generation device has a magnetic induction power generation device in the central column 10 of the oscillating float device, which is composed of a magnetic induction coil 9 and a magnetic column 16. The magnetic column 16 cuts the magnetic induction coil 9 to generate current as the float plate 7 moves up and down.

[0019] The electrical energy generated by the oscillating float power generation device, the rotary PTO power generation device, and the magnetic induction power generation device after operation is transmitted into the energy storage device 15 for storage. By integrating the oscillating float power generation device, the magnetic induction power generation device, and the rotary PTO power generation device into the float box 1, wave energy can be more fully utilized to convert into electrical energy.

[0020] The oscillating float power generation device includes a float plate 7, an upper PTO generator 8 of the oscillating float device, a lower PTO generator 14 of the oscillating float device, a central column 10 of the oscillating float device, and an energy storage device 15. At least six oscillating float-type PTO generators 14 are directly connected to the float plate 7. The upper part of the oscillating float-type PTO generators 14 is fixedly connected to the energy storage device 17 installed around the central column 10 of the oscillating float-type device, and the lower part is connected to the float plate 7. Four PTO generators 8 on the oscillating float type device are directly connected to the side of the energy storage device 15. The other end of the PTO generator 8 on the oscillating float type device is fixed to the inner wall of the float box 1. When the float box 1 is subjected to the up and down movement of waves, the float plate 7 reciprocates along the vertical direction of the central column 10 of the oscillating float type device under the action of buoyancy and gravity. The central column 10 of the oscillating float type device and the energy storage device 15 above it also move up and down. This movement drives the PTO generator 8 on the oscillating float type device and the PTO generator 14 on the lower part of the oscillating float type device to be stretched and compressed at the same time, thereby converting the mechanical energy of the waves into electrical energy and transmitting it to the energy storage device 15.

[0021] The magnetic induction power generation device includes a magnetic induction coil 9 and a magnetic column 16. The magnetic induction coil 9 and the magnetic column 16 are arranged inside the central column 10 of the sealed oscillating float device. The magnetic induction coil 9 is connected to the energy storage device 15. The working principle of the magnetic induction power generation device is to directly convert the kinetic energy of ocean waves into electrical energy using the principle of electromagnetic induction. When the float 7 moves up and down under the action of waves, it will drive the internal magnetic column 16 and magnetic induction coil 9 to move relative to each other (the magnetic column shuttles back and forth in the coil). This movement causes the magnetic field strength (magnetic flux) passing through the magnetic induction coil 9 to change, thereby generating an induced electromotive force (current). It eliminates the need for a complex mechanical transmission structure, reduces mechanical wear, and improves the reliability of the device in the seawater environment. The design is relatively simple, and the manufacturing and maintenance costs are lower.

[0022] The rotary generator includes a rotor 12, a PTO generator 11 and an energy storage device 15. Waves passing through the small holes 6 on the surface of the float 1 will drive the rotary generator. The small holes 6 are cone-shaped with a larger outer diameter and a smaller inner diameter, and their opening ratio is 18%. This design can effectively accelerate the inflowing seawater, form a high-speed jet, and impact the blades of the rotor 12 to make it rotate. The rotating wheel 12 is mounted on the central column 10 of the oscillating float device and the upper end of the energy storage device 17, with the outer and inner diameters of the two being compatible. The top of the rotating wheel 12 is connected to a rotating wheel-type power generation device PTO generator 11, and the upper output end of the PTO generator 11 is connected to the energy storage device 15. The rotational motion of the rotating wheel 12 is converted into electrical energy by the rotating wheel-type power generation device PTO generator 11 and then transmitted to the energy storage device 15. To ensure the stability of the internal power generation devices under harsh sea conditions, all power generation devices (float 7, oscillating float type device center column 10, runner 12, etc.) and energy storage devices 15 are fixed to the inner surface of the float box 1 through the connector 13 between the power generation device and the float box. The connector 13 used to connect the power generation device and the floating box 1 adopts an eight-truss structure; one end of the truss is connected to the energy storage device 17, and the other end is fixed to the inner surface of the floating box 1, and there is sufficient gap between the trusses to ensure that waves can pass smoothly, reduce the impact on the connection structure, and at the same time not affect the driving effect of the waves on the internal rotary power generation device.

[0023] This device optimizes energy storage and energy management; the energy storage device 15 is connected not only to the PTO generator 8 on the oscillating float device, the PTO generator 14 on the oscillating float device, the PTO generator 11 of the rotary generator device, and the magnetic induction coil 9, but also to the photovoltaic device. The photovoltaic device includes a photovoltaic energy storage device 5 installed on the float box 1, a photovoltaic column 3 installed at the upper end of the photovoltaic energy storage device 5, a photovoltaic brace 4 installed at the upper end of the photovoltaic column 3, and a photovoltaic panel 2 installed at the upper end of the photovoltaic brace 4.

[0024] The device also includes an intelligent energy management module that monitors the power output of each power generation unit and the state of charge of the energy storage device 15 in real time. When wave energy is sufficient, the electrical energy converted from wave energy is preferentially stored in the energy storage device 15. When wave energy is insufficient but sunlight is sufficient, photovoltaic power is fed into the energy storage device 15 through the photovoltaic energy storage device 5. Under conditions of no light and no waves, the energy storage device 15 releases electrical energy to provide a continuous and stable power supply for external loads or offshore equipment. This multimodal complementary design significantly improves the annual power generation hours and power supply reliability of the power generation device.

[0025] The device also describes its wave-damping function. When multiple pontoons 1 are arranged in an array on the sea, each pontoon 1 and its internal multi-stage energy capture structure (conical holes 6, rotors 12, and floats 7) together constitute a highly efficient wave-damping unit. Waves are first consumed by the first row of pontoons 1, and their wave height and energy are significantly reduced. When the transmitted waves pass through the second and third rows of pontoons 1, their energy is further absorbed. Therefore, this device can not only generate electricity efficiently, but also be used as a breakwater to effectively protect the coastline or marine aquaculture area behind it, achieving functional integration and cost savings.

[0026] When the device is in operation, the array of pontoons 1 are arranged on the sea surface. Waves surge from the bottom of the pontoons 1 into the cavity below the pontoons 1, first causing the pontoons 7 to move up and down. The up and down movement of the pontoons 7 causes the central column 10 of the oscillating float device to move up and down in the vertical direction, thereby causing the oscillating float power generation device to move up and down. The mechanical energy drives the lower PTO generator 14 and the upper PTO generator 8 of the oscillating float device to generate electricity, and finally converts the mechanical energy into electrical energy and stores it in the energy storage device 15.

[0027] At the same time, the reciprocating motion of the float plate 7 squeezes the water inside the float box 1 to flow towards the rotor 12, pushing the rotor 12 to rotate. Meanwhile, the water flowing in through the small hole 6 from the outside of the float box 1 also pushes the rotor 12 to rotate, thereby converting wave energy into the kinetic energy of the rotor 12's rotation. The kinetic energy is then converted into electrical energy by the rotor-type PTO generator 11 working, and finally stored in the energy storage device 15.

[0028] The energy storage device 15 stores the electrical energy transmitted by the oscillating float-type power generation device, the magnetic induction power generation device, and the rotary PTO power generation device, thereby realizing the conversion of wave energy into electrical energy.

[0029] In summary, the specific embodiments provided by this invention integrate four power generation modes—photovoltaic power generation, oscillating float type, rotary type, and magnetic induction type—into a single box-type floating body, and optimize their respective mechanical connections and energy transmission paths, thereby achieving all-weather, multi-dimensional, and highly efficient capture of solar and wave energy. Furthermore, through array-based arrangement, it also possesses excellent wave-damping capabilities, demonstrating broad prospects for marine engineering applications.

Claims

1. A multi-mode box-type wave energy generation device integrating wave damping and photovoltaics, comprising multiple square-shaped floating boxes (1), characterized in that, Each of the aforementioned pontoons (1) is equipped with an oscillating float-type power generation device and a rotary PTO power generation device. The oscillating float power generation device includes a circular float plate (7), an oscillating float device center column (10) is installed on the float plate (7), and an energy storage device (15) is installed at the top of the oscillating float device center column (10). The rotary PTO power generation device includes an energy storage device (17) fixedly mounted on the central column (10) of the oscillating float device. A rotary wheel (12) adapted to the energy storage device (17) is movably installed on the outer wall of the central column (10) of the oscillating float device and at the upper end of the energy storage device (17).

2. The multi-mode box-type wave energy generation device integrating wave damping and photovoltaics according to claim 1, characterized in that, A magnetic induction power generation device is sealed inside the central column (10) of the oscillating float device. The magnetic induction power generation device includes a magnetic induction coil (9) and a magnetic column (16). The magnetic induction coil (9) is connected to the energy storage device (15).

3. The multi-mode box-type wave energy generation device integrating wave damping and photovoltaics according to claim 2, characterized in that, The energy storage device (15) is located inside the float box (1) at the top of the central column (10) of the oscillating float device. The energy storage device (15) uses a supercapacitor to store electrical energy and is simultaneously connected to the oscillating float power generation device, the rotary PTO power generation device and the magnetic induction power generation device.

4. The multi-mode box-type wave energy generation device integrating wave damping and photovoltaics according to claim 1, characterized in that, Six oscillating float PTO generators (14) are evenly installed on the float plate (7) and around the central column (10) of the oscillating float device. The lower part of the six oscillating float PTO generators (14) is fixed to the float plate (7), and the upper part is fixed to the energy storage device (17).

5. The multi-mode box-type wave energy generation device integrating wave damping and photovoltaics according to claim 1, characterized in that, A connector (13) is connected to the outer wall of the energy storage device (17). The connector (13) consists of eight trusses, one end of which is connected to the energy storage device (17), and the other end is fixed to the inner surface of the float box (1). A gap for wave passage is also provided between the eight trusses of the connector (13).

6. The multi-mode box-type wave energy generation device integrating wave damping and photovoltaics according to claim 1, characterized in that, Four rotary power generation devices (PTO generators) (11) are installed on the top of the rotary wheel (12), and the upper output ends of the four rotary power generation devices (PTO generators) (11) are connected to the lower wall of the energy storage device (15).

7. The multi-mode box-type wave energy generation device integrating wave damping and photovoltaics according to claim 1, characterized in that, Four PTO generators (8) on oscillating float devices are connected to the side of the energy storage device (15), and the other end of the four PTO generators (8) on oscillating float devices is fixed to the inner wall of the float box (1).

8. The multi-mode box-type wave energy generation device integrating wave damping and photovoltaics according to claim 1, characterized in that, A photovoltaic device is installed on the outer side of the upper wall of the floating box (1). The photovoltaic device includes a photovoltaic energy storage device (5) installed on the floating box (1). A photovoltaic column (3) is installed at the upper end of the photovoltaic energy storage device (5). A photovoltaic brace (4) is installed at the upper end of the photovoltaic column (3). A photovoltaic panel (2) is installed at the upper end of the photovoltaic brace (4).

9. The multi-mode box-type wave energy generation device integrating wave damping and photovoltaics according to claim 1, characterized in that, The float plate (7) is installed inside the float box (1) and placed parallel to the rotary PTO power generation device.

10. The multi-mode box-type wave energy generation device integrating wave damping and photovoltaics according to claim 1, characterized in that, Several small holes (6) are provided in the middle of the wall of each of the floats (1), and the wheel (12) is directly opposite the small holes (6). The small hole (6) is cone-shaped with a larger outer diameter and a smaller inner diameter, and its opening ratio is 18%. The lower part of the pontoon (1) is a cylindrical cavity; Multiple of the aforementioned floating boxes (1) are arranged in an array on the sea.

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