Friction and electromagnetism combined type wave power generation device

By adopting friction and electromagnetic composite power generation mechanisms in wave energy power generation devices, the wave energy on the water surface and underwater is directly converted into kinetic energy of the sliding frame, solving the problem of low power generation efficiency in the prior art and achieving more efficient wave energy utilization.

CN120127931APending Publication Date: 2025-06-10GUANGZHOU INSTITUTE OF BLUE ENERGY
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Patent Information

Application Number
CN202510278237.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-10
Publication Date
2025-06-10

AI Technical Summary

Technical Problem

The existing wave energy power generation devices have low power generation efficiency, mainly due to the limited rotation amplitude of the rotor caused by the spring when vibrating and the flying saucer-shaped shell structure, which can only absorb low-frequency wave energy.

Method used

Friction and electromagnetic composite wave energy power generation device is adopted, including a cylindrical shell, a float structure and a force disk. The wave energy on and under the water surface is converted into kinetic energy of the sliding frame through the force disk to realize electromagnetic power generation and friction power generation.

Benefits of technology

It effectively improves power generation efficiency, avoids multi-stage transmission of energy, increases the movement amplitude of the sliding skeleton, is basically consistent with the amplitude of the wave, and improves the utilization rate of wave energy.

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Abstract

The invention relates to a friction and electromagnetic combined type wave energy power generation device, and relates to the field of wave energy power generation devices. Comprising a cylindrical shell, a floating ball structure and a stress disc. The first end of the cylindrical shell is sealed, a fixed shaft is fixed to the inner axis and slidably sleeved with a sliding framework, and a composite power generation assembly is arranged in the cylindrical shell. When waves exist on the sea surface, due to the fact that the floating ball structure is subjected to buoyancy and thrust of the waves, the stress disc and the floating ball structure are subjected to opposite force, and the sliding framework can move relative to the fixed shaft, so that electromagnetic power generation and friction power generation are achieved. Even if the sea surface is flat and quiet, as long as the water body below the sea surface flows relatively and the flow velocity difference exists between the upper part and the lower part of the stress disc, buoyancy or sinking force can be generated, the sliding framework can move relative to the fixed shaft, and finally electromagnetic power generation and friction power generation are realized, so that the power generation efficiency is effectively improved.
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Description

Technical Field

[0001] This application relates to the field of wave energy power generation devices, and particularly to a friction and electromagnetic composite wave energy power generation device. Background Art

[0002] In the face of the increasingly severe energy crisis, the exploration of renewable energy has become one of the important challenges for sustainable energy development. There is an urgent need for some alternative energy sources such as green energy sources like wind energy and ocean energy in nature. Currently, the global ocean coverage rate is approximately 70.8%, and collecting and utilizing ocean energy is also one of the goals for solving energy problems. At present, a composite power generation device is used to collect ocean energy, aiming to convert the low-frequency ocean energy of ocean waves into electric energy that can be stored and utilized; currently, advanced composite ocean energy power generation devices use a flying saucer-shaped outer shell, with a rotor-type electromagnetic power generation module and a triboelectric power generation module arranged inside the outer shell, and the power generation module is connected to the flying saucer-shaped outer shell through a spring. When the flying saucer-shaped outer shell floating on the ocean surface is pushed by waves and shakes, the internal spring will push the rotor to rotate, thereby converting the low-frequency wave energy into electric energy for storage.

[0003] However, the existing wave energy power generation devices have the following problems: The power source for the rotation of the rotor is the spring, and the power source of the spring is the wave energy received by the flying saucer-shaped outer shell from the sea surface. Since the spring itself has energy dissipation during vibration, the wave energy undergoes two transmissions, with a large loss in between, and the proportion of actually converting wave energy into electric energy is very small, resulting in a low wave energy utilization rate and thus a low power generation efficiency; In order to utilize wave energy, the power generation device needs to have the characteristic of floating on the sea surface, similar to a flying saucer-shaped outer shell or a hollow outer shell. However, due to the structural limitations of the flying saucer-shaped outer shell or the hollow outer shell, the rotation amplitude provided by each spring is limited, the rotation amplitude of the rotor is even smaller, and only low-frequency wave energy can be absorbed, resulting in a low power generation efficiency.

[0004] In response to the problem of low power generation efficiency of existing wave energy power generation devices, no effective solution has been proposed yet. Summary of the Invention

[0005] In the present invention, a friction and electromagnetic composite wave energy power generation device is provided to solve the problem of low power generation efficiency of existing wave energy power generation devices.

[0006] The present invention provides a friction and electromagnetic composite wave energy generation device, which includes a cylindrical outer shell, a floating ball structure and a force receiving disc. The first end of the cylindrical outer shell is sealed and a fixed shaft is fixed on the inner axis. A sliding skeleton is slidably sleeved on the fixed shaft. A composite power generation component is arranged inside the cylindrical outer shell. When the sliding skeleton slides on the fixed shaft, it is used to drive the composite power generation component to generate electromagnetic power and triboelectric power. The floating ball structure is hermetically installed at the second end of the cylindrical outer shell. The force receiving disc is located outside the first end of the cylindrical outer shell and its axis coincides with the axis of the cylindrical outer shell. The force receiving disc is fixedly installed with the sliding skeleton through a plurality of round rods. The plurality of round rods are parallel to the axis of the fixed shaft. The plurality of round rods penetrate through the first end of the cylindrical outer shell and are in sealed and sliding fit with it. The force receiving disc is used to convert the wave energy above and below the water surface into the kinetic energy of the sliding skeleton sliding on the fixed shaft.

[0007] Furthermore, the force receiving disc is in the shape of a hydrofoil, which is used to convert the wave energy below the water surface into the kinetic energy of the lift force of the force receiving disc.

[0008] Furthermore, the floating ball structure is spherical, its center of the ball coincides with the axis of the cylindrical outer shell, the second end of the cylindrical outer shell is embedded in the floating ball structure, and the non-intersecting part between the floating ball structure and the cylindrical outer shell is a hollow structure.

[0009] Furthermore, the floating ball structure is made of a transparent material, and a photovoltaic power generation component is arranged inside the floating ball structure.

[0010] Furthermore, the composite power generation component includes a plurality of arc-shaped fan blades, a plurality of metal coils, a magnet fixing skeleton and an electrode fixing skeleton. The plurality of arc-shaped fan blades are arranged on the outer edge of the sliding skeleton, and a plurality of polygonal grooves are formed between the arc-shaped fan blades and the outer edge of the sliding skeleton. A plurality of metal coils are arranged at the end of the sliding skeleton. The electrode fixing skeleton, the magnet fixing skeleton and the sliding skeleton are sequentially sleeved on the fixed shaft. The magnet fixing skeleton passes through a plurality of polygonal grooves and is in clearance fit. A plurality of electrodes are arranged on the outer side of the magnet fixing skeleton, and a plurality of magnets are arranged on the inner side of the magnet fixing skeleton. Friction materials are arranged on both the inner and outer side walls of the arc-shaped fan blades. A plurality of electrodes are arranged on the inner side of the electrode fixing skeleton. The friction materials of the arc-shaped fan blades are used to generate triboelectric power by rubbing against the outer side wall of the magnet fixing skeleton and the inner side wall of the electrode fixing skeleton respectively. The metal coils at the end of the sliding skeleton are used to generate induced power with the magnets on the inner side of the magnet fixing skeleton.

[0011] Furthermore, the plurality of arc-shaped fan blades are arranged on the outer edge of the sliding skeleton along the circumferential direction, and the center of this circumferential direction coincides with the center of the sliding skeleton. A plurality of polygonal grooves arranged along the circumferential direction are formed between the plurality of arc-shaped fan blades and the outer edge of the sliding skeleton, and the polygonal grooves correspond to the arc-shaped fan blades one by one.

[0012] Furthermore, the polygonal groove is a fan-shaped groove, the magnet fixing skeleton is a fan-shaped skeleton, and the fan-shaped groove is in clearance fit with the fan-shaped skeleton.

[0013] Furthermore, the magnet fixing skeleton includes a first disc, a plurality of sector skeletons, a plurality of magnets and a plurality of electrodes. The plurality of sector skeletons are installed on the first disc along the circumferential direction, and the center of this circumferential direction coincides with the center of the first disc. The plurality of magnets are embedded inside the plurality of sector skeletons, and the plurality of electrodes are embedded outside the plurality of sector skeletons. The first disc is slidably sleeved on the fixed shaft and their axes coincide.

[0014] Furthermore, the electrode fixing skeleton includes a second disc, a plurality of arc plate skeletons and a plurality of electrodes. The plurality of arc plate skeletons are installed on the second disc along the circumferential direction, and the center of this circumferential direction coincides with the center of the second disc. The plurality of electrodes are embedded inside the plurality of arc plate skeletons. The second disc is slidably sleeved on the fixed shaft and their axes coincide.

[0015] The present invention also provides a wave energy power generation facility, which includes a plurality of friction and electromagnetic composite wave energy power generation devices arranged in an array. The friction and electromagnetic composite wave energy power generation device is the above-mentioned friction and electromagnetic composite wave energy power generation device.

[0016] Compared with the related art, the friction and electromagnetic composite wave energy power generation device provided by the present invention has the following beneficial effects:

[0017] 1. When there are waves on the sea surface, due to the buoyancy and the thrust of the waves acting on the floating ball structure, the force receiving disc and the floating ball structure are subjected to opposite forces, and the sliding skeleton will move relative to the fixed shaft to achieve electromagnetic power generation and friction power generation. Even when the sea surface is calm, as long as there is relative flow of the water body under the sea surface and there is a flow velocity difference above and below the force receiving disc, a buoyancy or sinking force will be generated, and the sliding skeleton will move relative to the fixed shaft, ultimately achieving electromagnetic power generation and friction power generation, thereby effectively improving the power generation efficiency. The wave energy can be directly transmitted to the sliding skeleton through the force receiving disc, without the need for multi-stage energy transmission like springs and flying saucer-shaped shells. In addition, after being pushed by the wave energy, the force receiving disc can make the moving distance of the sliding skeleton basically the same as the amplitude of the sea waves. However, in the prior art, the amplitude of the spring movement is significantly reduced compared to the amplitude of the sea waves due to the elastic force. The present invention improves this drawback, thereby effectively improving the power generation efficiency.

[0018] 2. The electrode fixing skeleton, the magnet fixing skeleton and the sliding skeleton do not perform secondary energy conversion during each wave energy conversion, and the friction stroke is larger, thereby effectively improving the power generation efficiency.

[0019] 3. The floating ball structure is made of a transparent material, and a photovoltaic power generation component, such as a photovoltaic panel, is arranged inside the floating ball structure. When the weather is sunny, sunlight passes through the transparent floating ball structure and is absorbed by the photovoltaic panel and converted into electrical energy for storage, thereby improving the power generation efficiency and the effective utilization rate of the device space.

[0020] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more concise and understandable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the device in this embodiment;

[0022] Figure 2 is Figure 1 a half-sectional structural diagram of

[0023] Figure 3 is a partial structural diagram of the sliding skeleton;

[0024] Figure 4 is a three-dimensional structural diagram of the magnet fixing skeleton;

[0025] Figure 5 is a three-dimensional structural diagram of the electrode fixing skeleton. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To understand the purpose, technical solution, and advantages of the present application more clearly, the present application will be described and explained below with reference to the drawings and embodiments.

[0027] Unless otherwise defined, the technical terms or scientific terms involved in the present application shall have the general meaning understood by those with ordinary skills in the technical field to which the present application belongs. In the present application, words such as "a", "an", "one kind", "the", "these", etc. do not indicate a limitation in quantity, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in the present application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device including a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent in these processes, methods, products, or devices. The terms "connection", "coupling", "connected" and the like involved in the present application do not limit to physical or mechanical connections, but may include electrical connections, whether directly or indirectly connected. The term "a plurality" involved in the present application means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. Usually, the character " / " represents an "or" relationship between the associated objects before and after. The terms "first", "second", "third", etc. involved in the present application are only used to distinguish similar objects and do not represent a specific order for the objects.

[0028] The present invention is a device for collecting wave energy and converting wave energy into electrical energy for storage. Different from the prior art, the present invention can not only utilize the wave energy on the sea surface, but also utilize the wave energy under the sea surface. At the same time, the present invention adopts a linear reciprocating motion mode for power generation, which has the advantages of a long power generation stroke and modular detachable maintenance compared with the prior art. Specifically as follows:

[0029] Please refer to Figures 1 to 2 , this embodiment provides a friction and electromagnetic composite wave energy power generation device, including a cylindrical outer shell 2, a floating ball structure 1 and a force receiving disc 3. The floating ball structure 1, the cylindrical outer shell 2 and the force receiving disc 3 are made of polylactic acid plastic.

[0030] Among them, please refer to Figure 2 , the cylindrical outer shell 2 is a cylindrical tube body with a one-way opening. (In Figure 2 , the first end is the lower end and the second end is the upper end) The first end of the cylindrical outer shell 2 is sealed and a fixed shaft 4 is fixed on the inner axis. A sliding skeleton 5 is slidably sleeved on the fixed shaft 4. The outer shape of the sliding skeleton 5 is a short cylinder. A composite power generation component is arranged in the cylindrical outer shell 2, and the power generation principle of the composite power generation component is an electromagnetic-friction composite power generation principle. When the sliding skeleton 5 slides on the fixed shaft 4, it is used to drive the composite power generation component to generate electromagnetic power and friction power.

[0031] In addition, please refer to Figure 2 , the floating ball structure 1 is sealed and installed at the second end of the cylindrical outer shell 2. Specifically, the floating ball structure 1 is spherical, and its center of the ball coincides with the axis of the cylindrical outer shell 2. The second end of the cylindrical outer shell 2 is embedded in the floating ball structure 1, and the part where the floating ball structure 1 and the cylindrical outer shell 2 do not intersect is a hollow structure. When this device is put into the sea, the floating ball structure 1 generates buoyancy to make this device float on the sea surface. Since the floating ball structure 1 adopts a hollow structure inside in order to improve buoyancy, and in order to make more full use of the device space and improve the power generation efficiency, the floating ball structure 1 can also be made of a transparent material, and a photovoltaic power generation component, such as a photovoltaic panel, is arranged in the floating ball structure 1. When the weather is sunny, sunlight passes through the transparent floating ball structure 1 and is absorbed by the photovoltaic panel and converted into electrical energy for storage. Thereby improving the power generation efficiency and the effective utilization rate of the device space.

[0032] In addition, please refer to Figure 1 and Figure 2, the force-receiving disc 3 is located outside the first end of the cylindrical outer shell 2 and its axis coincides with the axis of the cylindrical outer shell 2. The force-receiving disc 3 is fixedly installed with the sliding skeleton 5 through a number of round rods. The number of round rods is parallel to the axis of the fixed shaft 4. The number of round rods penetrate the first end of the cylindrical outer shell 2 and are in sealed and sliding fit with it. The force-receiving disc 3 is used to convert the wave energy on and under the water surface into the kinetic energy of the sliding skeleton 5 sliding on the fixed shaft 4. The power generation process can be simply explained as follows: When there are waves on the sea surface, due to the buoyancy and the thrust of the waves acting on the floating ball structure 1, the floating ball structure 1 has a tendency to move upward in a short period of time. At this time, due to the resistance of the underwater water body, the force-receiving disc 3 and the floating ball structure 1 are subjected to opposite forces, and the sliding skeleton 5 will move relative to the fixed shaft 4, thus realizing electromagnetic power generation and triboelectric power generation. Compared with the prior art, the advantages of the present invention are as follows: The wave energy can be directly transmitted to the sliding skeleton 5 through the force-receiving disc 3, without the need for multi-stage transmission of energy as in the case of springs and flying saucer-shaped outer shells. In addition, after the force-receiving disc 3 is pushed by the wave energy, the distance that the sliding skeleton 5 can move is basically the same as the amplitude of the sea wave. However, in the prior art, due to the elastic force of the spring, the moving amplitude of the spring is greatly reduced compared with the amplitude of the sea wave. The present invention improves this shortcoming, thereby effectively improving the power generation efficiency.

[0033] The ingenuity of the present invention lies in that even when the sea surface is calm, as long as there is relative flow of the underwater water body and there is a flow velocity difference between the upper and lower sides of the force-receiving disc 3, a buoyancy or sinking force will be generated, so that the force-receiving disc 3 moves relative to the floating ball structure 1, thereby driving the sliding skeleton 5 to move relative to the fixed shaft 4, and finally realizing electromagnetic power generation and triboelectric power generation. In order to further improve the underwater power generation ability of the force-receiving disc 3. In this embodiment, the force-receiving disc 3 is disc-shaped. In some other embodiments, the force-receiving disc 3 can be hydrofoil-shaped, which is used to convert the wave energy under the water surface into the kinetic energy of the lift force of the force-receiving disc 3. The hydrofoil shape can simulate an airplane wing and has better lift.

[0034] In addition, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 , the composite power generation assembly includes a number of arc-shaped fan blades 9, a number of metal coils 8, a magnet fixing skeleton 6 and an electrode fixing skeleton 7. There is a certain gap between the moving skeleton arc-shaped fan blades 9 and the magnet fixing skeleton 6 and the electrode fixing skeleton 7, adopting a non-contact independent layer structure to reduce the wear caused by friction and extend the service life.

[0035] Among them, several arc-shaped fan blades 9 are arranged on the outer edge of the sliding skeleton 5, and several polygonal grooves are formed between the arc-shaped fan blades 9 and the outer edge of the sliding skeleton 5. In some other embodiments, the polygonal grooves can also be fan-shaped grooves. The magnet fixing skeleton 6 is a fan-shaped skeleton, and the fan-shaped grooves are in clearance fit with the fan-shaped skeleton. Through the contact of the fan-shaped groove surfaces, the contact area can be increased while the smoothness is enhanced. The several arc-shaped fan blades 9 are arranged on the outer edge of the sliding skeleton 5 along the circumferential direction, and the center of this circumferential direction coincides with the center of the sliding skeleton 5. Several polygonal grooves arranged along the circumferential direction are formed between the several arc-shaped fan blades 9 and the outer edge of the sliding skeleton 5, and the polygonal grooves correspond to the arc-shaped fan blades 9 one by one.

[0036] Among them, several metal coils 8 are arranged at the end of the sliding skeleton 5, and the metal coils 8 are preferably copper coils. The electrode fixing skeleton 7, the magnet fixing skeleton 6, and the sliding skeleton 5 are sleeved on the fixed shaft 4 in sequence.

[0037] Please refer to Figure 4 , the magnet fixing skeleton 6 includes a first disc, several fan-shaped skeletons, several magnets, and several electrodes (here the electrodes refer to the electrodes of the magnet fixing skeleton 6, and the label of this electrode is 10). The several fan-shaped skeletons are installed on the first disc along the circumferential direction, and the center of this circumferential direction coincides with the center of the first disc. The magnets 11 of the magnet fixing skeleton are embedded inside the several fan-shaped skeletons, and the several electrodes are embedded outside the several fan-shaped skeletons. The first disc is slidably sleeved on the fixed shaft 4 and their axes coincide.

[0038] Please refer to Figure 5 , the electrode fixing skeleton 7 includes a second disc, several arc-shaped plate skeletons, and several electrodes (here the electrodes refer to the electrodes of the electrode fixing skeleton 7, and the label of this electrode is 12). The several arc-shaped plate skeletons are installed on the second disc along the circumferential direction, and the center of this circumferential direction coincides with the center of the second disc. The several electrodes are embedded inside the several arc-shaped plate skeletons. The second disc is slidably sleeved on the fixed shaft 4 and their axes coincide.

[0039] Specifically, there are 8 sets of magnet fixing skeletons 6, 8 sets of electrode fixing skeletons 7, and 8 metal coils 8. The magnet fixing skeletons 6 pass through a number of polygonal grooves and are in clearance fit with each other. A number of electrodes are arranged on the outer side of the magnet fixing skeletons 6, and a number of magnets are arranged on the inner side of the magnet fixing skeletons 6. Friction materials are arranged on both the inner and outer side walls of the arc-shaped fan blades 9. A number of electrodes are arranged on the inner side of the electrode fixing skeletons 7. The friction materials of the arc-shaped fan blades 9 are used to generate electricity by friction with the outer side wall of the magnet fixing skeletons 6 and the inner side wall of the electrode fixing skeletons 7 respectively. The metal coils 8 at the end of the sliding skeleton 5 are used to generate electricity by induction with the magnets inside the magnet fixing skeletons 6. During use, the sliding skeleton 5 drives the metal coils 8 and the arc-shaped fan blades 9 to move. During the movement, the magnetic induction lines of the metal coils 8 will be cut by a number of magnets arranged on the inner side of the magnet fixing skeletons 6 to achieve induction power generation. The friction materials on the inner and outer sides of the arc-shaped fan blades 9 will also generate electricity by friction with the outer side wall of the magnet fixing skeletons 6 and the electrodes on the inner side wall of the electrode fixing skeletons 7 respectively. Positive charges are carried on the copper electrodes, and negative charges are generated on the surface of the friction materials. As the friction materials move up and down, a potential difference will be generated, thereby realizing current output and ultimately realizing the function of composite power generation. In addition, any polymer insulating material with electronegativity can be used as the friction layer and can generate output signals. The friction material (friction layer) is preferably a polymer material with good electronegativity, such as fluorine-containing materials, fluorinated isopropylene (FEP), polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), etc. The number of turns of the metal coils 8 and the size of the magnets can be appropriately adjusted according to the device size. Compared with the prior art, the electrode fixing skeletons 7, the magnet fixing skeletons 6, and the sliding skeleton 5 do not perform secondary energy conversion during each wave energy conversion, and the friction stroke is larger, thereby effectively improving the power generation efficiency.

[0040] The present invention also provides a wave energy power generation facility, including a number of friction and electromagnetic composite wave energy power generation devices arranged in an array. The friction and electromagnetic composite wave energy power generation device is the above-mentioned friction and electromagnetic composite wave energy power generation device. By arranging the device in an array, efficient collection of wave energy and solar energy on the sea surface and under the sea surface can be achieved in a certain area, thereby greatly improving the wave energy conversion efficiency.

[0041] It should be understood that the specific embodiments described here are only used to explain this application, rather than to limit it. According to the embodiments provided in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0042] Obviously, the accompanying drawings are only some examples or embodiments of the present application. For those of ordinary skill in the art, the present application can also be applied to other similar situations based on these drawings without creative efforts. Additionally, it can be understood that although the work done during this development process may be complex and time-consuming, for those of ordinary skill in the art, certain design, manufacturing, or production changes based on the technical content disclosed in the present application are only routine technical means and should not be regarded as insufficient disclosure of the present application.

Claims

1. A friction and electromagnetic composite wave energy power generation device, characterized in that: include: A cylindrical outer shell (2) having a sealed first end and a fixed shaft (4) fixed on the inner axis thereof, a sliding frame (5) being slidably sleeved on the fixed shaft (4), a composite power generation component being arranged in the cylindrical outer shell (2), and the sliding frame (5) being used to drive the composite power generation component to perform electromagnetic power generation and friction power generation when sliding on the fixed shaft (4); A float structure (1) is sealably mounted on the second end of the cylindrical housing (2); A force-bearing plate (3) is located outside the first end of the cylindrical shell (2) and its axis coincides with the axis of the cylindrical shell (2). The force-bearing plate (3) is fixedly mounted on the sliding frame (5) via a plurality of round rods. The plurality of round rods are parallel to the axis of the fixed shaft (4). The plurality of round rods penetrate the first end of the cylindrical shell (2) and are sealed and slidably matched therewith. The force-bearing plate (3) is used to convert wave energy on and under the water surface into kinetic energy of the sliding frame (5) sliding on the fixed shaft (4).

2. The friction and electromagnetic composite wave energy power generation device according to claim 1, characterized in that: The force receiving plate (3) is in the shape of a hydrofoil and is used to convert wave energy under the water surface into kinetic energy of the lift of the force receiving plate (3).

3. The friction and electromagnetic composite wave energy power generation device according to claim 1, characterized in that: The float structure (1) is spherical, the center of which coincides with the axis of the cylindrical shell (2), the second end of the cylindrical shell (2) is embedded in the float structure (1), and the part where the float structure (1) and the cylindrical shell (2) do not intersect is a hollow structure.

4. The friction and electromagnetic composite wave energy power generation device according to claim 3, characterized in that: The float structure (1) is made of transparent material, and a photovoltaic power generation component is arranged inside the float structure (1).

5. The friction and electromagnetic composite wave energy power generation device according to claim 1, characterized in that: The composite power generation component comprises a plurality of arc-shaped blades (9), a plurality of metal coils (8), a magnet fixing frame (6) and an electrode fixing frame (7); the plurality of arc-shaped blades (9) are arranged on the outer edge of a sliding frame (5), and a plurality of polygonal grooves are provided between the arc-shaped blades (9) and the outer edge of the sliding frame (5); a plurality of metal coils (8) are arranged at the end of the sliding frame (5); the electrode fixing frame (7), the magnet fixing frame (6) and the sliding frame (5) are sleeved on the fixed shaft (4) in sequence; the magnet fixing frame (6) passes through the fixed shaft A plurality of polygonal grooves are provided with clearance fit, a plurality of electrodes are arranged on the outside of the magnet fixing frame (6), a plurality of magnets are arranged on the inside of the magnet fixing frame (6), friction materials are arranged on the inner and outer walls of the arc-shaped fan blade (9), a plurality of electrodes are arranged on the inside of the electrode fixing frame (7), the friction materials of the arc-shaped fan blade (9) are used to generate electricity by friction with the outer wall of the magnet fixing frame (6) and the inner wall of the electrode fixing frame (7), and the metal coil (8) at the end of the sliding frame (5) is used to generate electricity by induction with the magnet on the inner side of the magnet fixing frame (6).

6. The friction and electromagnetic composite wave energy power generation device according to claim 5, characterized in that: A plurality of arc-shaped blades (9) are arranged on the outer edge of the sliding frame (5) along a circumferential direction, and the center of the circle in the circumferential direction coincides with the center of the circle of the sliding frame (5). A plurality of polygonal grooves arranged along the circumferential direction are provided between the plurality of arc-shaped blades (9) and the outer edge of the sliding frame (5), and the polygonal grooves correspond one to one to the arc-shaped blades (9).

7. The friction and electromagnetic composite wave energy power generation device according to claim 6, characterized in that: The polygonal groove is a fan-shaped groove, the magnet fixing frame (6) is a fan-shaped frame, and the fan-shaped groove and the fan-shaped frame are clearance-matched.

8. The friction and electromagnetic composite wave energy power generation device according to claim 7, characterized in that: The magnet fixing frame (6) comprises a first disk, a plurality of fan-shaped frames, a plurality of magnets and a plurality of electrodes. The plurality of fan-shaped frames are mounted on the first disk along a circumferential direction, and the center of the circle in the circumferential direction coincides with the center of the circle of the first disk. The plurality of magnets are embedded inside the plurality of fan-shaped frames, and the plurality of electrodes are embedded outside the plurality of fan-shaped frames. The first disk is slidably sleeved on the fixed shaft (4), and the axes of the two coincide.

9. The friction and electromagnetic composite wave energy power generation device according to claim 8, characterized in that: The electrode fixing frame (7) comprises a second disk, a plurality of arc-shaped plate frames and a plurality of electrodes. The plurality of arc-shaped plate frames are mounted on the second disk along a circumferential direction, and the center of the circumferential direction coincides with the center of the second disk. The plurality of electrodes are embedded inside the plurality of arc-shaped plate frames. The second disk is slidably sleeved on the fixed shaft (4), and the axes of the two coincide.

10. A wave energy power generation facility, characterized in that: include: A plurality of friction and electromagnetic composite wave energy power generation devices arranged in an array, wherein the friction and electromagnetic composite wave energy power generation device is the friction and electromagnetic composite wave energy power generation device as described in any one of claims 1 to 9.

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