Liquid metal-based small-scale wave power device

Abstract

The application provides a liquid metal-based small-scale wave power generation device, which comprises a plurality of power generation units, each of the power generation units comprising a buoyancy bin and a power generation bin which are both in a closed structure, the power generation bin is provided with a grid structure induction electrode made of conductive metal material, the inner bottom surface of the power generation bin is in a concave disc bottom structure, the spacing between the bottom surface of the grid structure and the disc bottom structure increases from the edge of the disc bottom structure to the center of the disc bottom structure, the edge of the disc bottom structure is connected with the edge of the grid structure, the surface of the grid structure is coated with a layer of friction material, the disc bottom structure is filled with liquid metal, and the inner surface of the disc bottom structure is provided with a metal foil; the bottom surface of the buoyancy bin is provided with an induction electrode connector, the induction electrode connector is connected with the induction electrode of the grid structure through the top surface of the power generation bin, and the electric wire led out of the induction electrode connector and the electrode extension line led out of the metal foil at the bottom of the power generation bin are both connected with a power output line.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ocean wave energy micro-nano conversion technology, in particular to a liquid metal-based small-scale wave power generation device. BACKGROUND

[0002] In the application of friction nanogenerator, most of them use solid-solid contact method for friction power generation. The friction between solids can easily generate heat energy, and part of the absorbed wave energy is converted into heat energy, thereby reducing the energy conversion efficiency. The effectiveness of solid friction contact is greatly affected by the roughness and matching of the two contact surfaces, which requires a higher manufacturing process and is difficult to achieve uniform standards. In addition, necessary hard friction is required during solid friction power generation, which will inevitably cause material loss and deformation, which can easily lead to a significant decrease in energy conversion or damage to the device, and more frequent updates and maintenance, which not only increases the workload but also increases the use cost, making it difficult to develop and maintain in practical applications. At the same time, in order to collect the fluctuating wave energy, many inventions use built-in ball collision or contact method for energy conversion. Although the use of balls can achieve the purpose of absorbing unstable directional energy, the solid contact surface is only a point, and the energy conversion has great limitations, with low power generation efficiency. SUMMARY

[0003] Small-scale waves refer to waves with relatively short wavelengths and relatively low wave heights. Such waves are often caused by local factors near the sea surface, such as turbulent gusts, wave interference, etc. Due to the shorter wavelength, the wave frequency of small-scale waves is usually higher, and accordingly, its period is shorter. This means that the number of changes in the wave in a unit of time is greater, and the fluctuation is more rapid. The energy of small-scale waves is relatively dispersed, although the energy carried by a single wave is not large, but a large number of small-scale waves exist simultaneously, collectively forming the wave energy field of the ocean surface.

[0004] Small-scale waves are ubiquitous on the sea surface and are not strictly limited by geographical location and climate conditions, which makes small-scale wave power generation have wide applicability. At the same time, as a clean energy source, the development and utilization of small-scale wave power generation will not produce greenhouse gases and other harmful substances, and has minimal impact on the environment. Compared with traditional fossil energy power generation, it has significant environmental friendliness. With the increasing awareness of environmental protection around the world, small-scale wave power generation will become one of the important directions of future energy development.

[0005] Therefore, through effective capture and conversion technology, these dispersed energies can be gathered together to become a new renewable energy source. This is of great significance for alleviating energy pressure and promoting energy structure transformation.

[0006] This invention utilizes the liquid metal structure principle of a horizontally sliding triboelectric nanogenerator to collect and convert small-scale wave energy, achieving the goal of converting kinetic energy into electrical energy. Energy can be collected from a point on the sea surface by using power generation units. Connecting these units to form a checkerboard or mesh-like surface creates a power generation grid, collecting even more small-scale wave energy and thus converting it into more electrical energy. Power generation is achieved through liquid-solid contact. Liquid metal, as a metallic material, has been widely studied due to its excellent physical properties such as high conductivity and good flexibility, and has broad application prospects in fields such as chip cooling, electronic printing, and energy science (including lithium batteries and thermoelectric batteries). Triboelectric charging is a surface charging effect; compared to solid-solid contact, liquid-solid contact increases the contact area, making the contact tighter and reducing the coefficient of friction.

[0007] Liquid metal-based triboelectric nanogenerators offer significant advantages over solid-solid contacts in terms of material properties, energy conversion efficiency, application areas, and environmental friendliness. Due to the superior performance of liquid metal contacts, including a high effective contact area, shape adaptability, and a low coefficient of friction, energy conversion efficiency is greatly improved. Furthermore, the fluid nature of liquid metals makes them ideal for harvesting vibrational energy, perfectly matching the wave dynamics of small-scale waves. Therefore, wave kinetic energy can be better converted into electrical energy for storage and utilization.

[0008] Liquid metal-based triboelectric nanogenerators (LM-TENGs) are an innovative energy conversion technology that combines the unique properties of liquid metals with the principles of triboelectric nanogenerators to achieve efficient and flexible conversion of mechanical energy into electrical energy.

[0009] It operates by utilizing the coupling effect of triboelectricity and electrostatic induction, converting a series of mechanical stimuli such as vibration, rotation, expansion, and contraction into electrical energy. Liquid metal-based triboelectric nanogenerators build upon this by using liquid metal as an electrode or friction layer to form a friction pair with another material. When the two move relative to each other, due to the triboelectric and electrostatic induction effects, charge separation occurs between the liquid metal and the other material, creating a potential difference that drives electrons to flow in the external circuit, generating electrical energy.

[0010] like Figure 4 As shown, the LM-TENG consists of two parts: a thin sheet composed of a friction material body 15 and its electrode 16, and a liquid metal 14. Any insulating material with a different electron-withdrawing capability than the liquid metal 14 can be used as the friction material, such as polyimide, polytetrafluoroethylene, and polyethylene terephthalate (PET). One end of the electrode 16 is completely covered by the friction material body 15 to prevent a short circuit between the electrode 16 and the liquid metal 14. Various materials are also available for the liquid metal 14, such as mercury and gallium.Figure 5 The working process is as follows:

[0011] 1. When the thin slice is partially immersed in the liquid metal, the friction material body 15 begins to contact the liquid metal 14. Due to the difference in electron- absorbing ability between the two, electrons will be injected from the liquid metal 14 to the surface of the friction material body 15, making the surface of the friction material body 15 carry a net negative charge, while the interface of the liquid metal 14 produces a net positive charge, as shown in Figure 5 (I);

[0012] 2. When the thin slice is removed from the liquid metal 14, the separation of the frictional charge in the interface region will make the potential of the liquid metal 14 higher than that of the induction electrode, so that the electrons in the electrode 16 will flow to the liquid metal 14 through the external load 18, thereby forming a reverse current, as shown in Figure 5 (II);

[0013] 3. In this process, the flow of electrons continues until the thin slice is completely removed, at which time the induction potential difference between the electrode 16 and the liquid metal 14 and the amount of transferred charge reach a maximum, as shown in Figure 5 (III).

[0014] When the thin slice is moved back into the liquid metal 14, the potential difference will decrease as the wetted area of the thin slice increases. Therefore, the electrons will flow from the liquid metal 14 back to the electrode 16 in the opposite direction, as shown in Figure 5 (IV). Thus, the entire process will produce an alternating current pulse output.

[0015] The technical scheme adopted by the present application is: a liquid metal-based small-scale wave power generation device, comprising a plurality of interconnected power generation units, the power generation unit comprising a buoyancy bin and a power generation bin which are both in a closed structure, the buoyancy bin being located at the top of the power generation bin, the inner wall of the power generation bin being an insulation layer material, the power generation bin having an induction electrode in a grid structure made of conductive metal material, the grid structure comprising a rectangular plate completely fitted with the top of the power generation bin and a plurality of identical specification strip plates vertically and spaced apart with the bottom of the rectangular plate, the rectangular plate completely covering the top surface of the power generation bin, the top surface of the power generation bin being a plane, the bottom surface of the strip plate being parallel to the top surface of the power generation bin, the front and rear end surfaces of the strip plate being flush with the front and rear end surfaces of the power generation bin, respectively, the two sides of the grid structure being in contact with the two side surfaces of the power generation bin, respectively, the inner bottom surface of the power generation bin being a concave disc bottom type structure, the spacing between the bottom surface of the grid structure and the disc bottom type structure increasing from the edge of the disc bottom type structure to the center of the disc bottom type structure, the edge of the disc bottom type structure being connected to the edge of the grid structure, the surface of the grid structure being coated with a layer of friction material, the disc bottom type structure being filled with liquid metal, when the top surface of the power generation bin is in a horizontal state, there is a gap between the surface of the liquid metal and the bottom surface of the grid structure, the inner surface of the disc bottom type structure having a metal foil sheet;

[0016] The bottom surface in the buoyancy bin has an induction electrode connector, the induction electrode connector being connected with the induction electrode of the grid structure through the top surface of the power generation bin, the electric wire led out of the induction electrode connector and the electrode extension line led out of the metal foil sheet at the bottom of the power generation bin being connected with the power output line.

[0017] Optionally, the side surface of the buoyancy bin has a power supply interface, and the power output line is connected with the power supply interface.

[0018] Optionally, the power management system is further included, the power management system being located in the buoyancy bin, the electric wire led out of the induction electrode connector and the electrode extension line led out of the metal foil sheet at the bottom of the power generation bin being connected with the power output line through the power management system.

[0019] Optionally, the four surfaces on the outside of the buoyancy bin are all provided with connecting rings.

[0020] Optionally, the friction material is polyimide, polytetrafluoroethylene and polyethylene terephthalate (PET).

[0021] Optionally, the liquid metal is mercury and gallium.

[0022] The present application has the advantages and positive effects that: the present application does not generate large heat energy in liquid-solid contact, and has high conductivity, greatly improving the energy conversion efficiency; due to the flow characteristics of the liquid, the liquid metal and the solid friction material can be more flexible to complete the fitting and friction, and will not be limited by the contact surface process, greatly reducing the process difficulty and ensuring the uniformity of energy conversion; the liquid-solid contact process will not cause wear to the solid material, so that the power generation unit can remain in its original state for a long time, and the energy conversion will not be attenuated due to the use time, reducing the frequency of updating and maintenance, reducing the workload and use cost, and being very friendly to actual application; due to the fluidity of the liquid, when the water surface has fluctuations, the power generation unit will fluctuate with the same frequency, the liquid metal quickly receives the reaction, and the friction material is contacted and fluctuated, and the power generation cycle is completed with the continuous fluctuation; at the same time, the friction material adopts a toothed structure, and the liquid metal has liquid characteristics, which can greatly increase the contact area and the sensitivity of the reaction, so that the contact is more close and frequent, compared with the single-point contact of the sphere, the energy conversion efficiency and the power generation efficiency are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0024] Figure 2 is a schematic diagram of the overall structure of the embodiment of the present application; Figure 1 is a schematic diagram of the partial cross-sectional structure of the embodiment of the present application;

[0025] Figure 3 is a schematic diagram of the internal structure of the power generation bin in the embodiment of the present application; Figure 1

[0026] Figure 4 is a schematic diagram of the power generation principle of the prior art; Figure 5

[0027] is a schematic diagram of the working process of the embodiment of the present application; Figure 6 Figure 1 is a schematic diagram of the working process of the embodiment of the present application;

[0028] Figure 7 Figure 1 is a schematic diagram of the working process of the embodiment of the present application;

[0029] In the figure: 1, buoyancy bin; 2, power generation bin; 3, connecting ring; 4, power supply interface; 5, induction electrode joint; 6, friction material; 7, liquid metal; 8, metal foil; 9, electrode extension line; 10, electric wire; 11, power management system; 12, bin separation membrane; 13, power supply output line; 14, liquid metal; 15, friction material body; 16, electrode; 17, wire; 18, load. DETAILED DESCRIPTION

[0030] ​​​The application will be described in further detail below with reference to the specific embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the application and are not intended to limit the application. In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", and "connection" should be understood broadly, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or a connection between two components. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0031] As shown in Figures 1-3 The application provides a liquid metal-based small-scale wave power generation device, which comprises a plurality of interconnected power generation units, and each power generation unit comprises a buoyancy bin 1 and a power generation bin 2. The buoyancy bin 1 is located at the top of the power generation bin 2. The inner wall of the power generation bin 2 is made of an insulating layer material. The power generation bin 2 has a grid structure induction electrode made of a conductive metal material (copper or aluminum) inside. The grid structure induction electrode comprises a rectangular plate completely matched with and covering the top surface of the power generation bin 2, and a plurality of strip plates of the same specification vertically and spaced apart from each other. The top surface of the power generation bin 2 is a plane. The bottom surface of the strip plate is parallel to the top surface of the power generation bin 2. The front and rear end surfaces of the strip plate are flush with the front and rear end surfaces of the power generation bin 2, respectively. The two sides of the grid structure induction electrode are in contact with the two side surfaces of the power generation bin 2, respectively. The inner bottom surface of the power generation bin 2 is a concave disc bottom structure. The spacing between the bottom surface of the grid structure induction electrode and the disc bottom structure increases from the edge of the disc bottom structure to the center of the disc bottom structure. The edge of the disc bottom structure is connected to the edge of the grid structure induction electrode. The surface of the grid structure induction electrode is coated with a layer of friction material 6. The disc bottom structure is filled with liquid metal 7. When the top surface of the power generation bin 2 is in a horizontal state, there is a gap between the surface of the liquid metal 7 and the bottom surface of the grid structure induction electrode. The inner surface of the disc bottom structure has a metal foil 8.

[0032] The bottom surface of the buoyancy bin 1 has an induction electrode connector 5. The induction electrode connector 5 is connected to the induction electrode of the grid structure through the top surface of the power generation bin 2. The electric wire 10 led out of the induction electrode connector 5 and the electrode extension line 9 led out of the metal foil 8 at the bottom of the power generation bin 2 are connected to the power output line 13.

[0033] The side of the buoyancy bin 1 has a power supply interface 4, and the power output line 13 is connected with the power supply interface 4.

[0034] The power management system 11 is also included, which is located in the buoyancy bin 1, and the electric wire 10 drawn from the induction electrode joint 5 and the electrode extension line 9 drawn from the metal foil 8 at the bottom of the power generation bin 2 are both connected with the power output line 13 through the power management system 11.

[0035] The connecting ring 3 is arranged on the four sides of the buoyancy bin 1.

[0036] The friction material is polyimide, polytetrafluoroethylene and polyethylene terephthalate (PET).

[0037] The liquid metal is mercury and gallium.

[0038] The buoyancy bin 1 in the above structure is a closed structure composed of a solid and light insulating material, and the inside is a vacuum. The structure is a flat three-dimensional structure, and the upper and lower bottom surfaces are circular, square or even-sided polygonal. The closed and flat structure prevents the contact between the components in the bin and the water body or water vapor, and provides a large buoyancy for the power generation unit, so as to ensure that the power generation unit can be placed horizontally on the sea surface. When the water surface fluctuates, the power generation unit can fluctuate with the water surface at the same frequency, so that the liquid metal 7 and the friction material 6 are in contact or separated, so as to achieve the purpose of power generation. The symmetrical structure of the upper and lower bottom surfaces ensures that the power generation unit remains horizontal on the calm water surface, and does not tilt on one side, which affects the energy conversion efficiency.

[0039] The power generation bin 2 is also a closed structure composed of a solid and light insulating material, and the upper part is a flat three-dimensional structure, and the upper bottom surface is the same as the bottom surface of the buoyancy bin 1. The lower part is a bowl-shaped (or disc bottom-shaped) structure that gradually concentrates towards the center of the bottom surface and has a shallow depth. The upper part is mainly assembled with the induction electrode and the friction material 6, and the lower part is used to contain the liquid metal 7. When the water surface is calm, the liquid metal 7 is concentrated at the bottom of the power generation bin 2. As shown in the figure, when the water surface fluctuates, the liquid metal 7 concentrated at the bottom of the power generation bin 2 also fluctuates and comes into contact with the friction material 6. In the process of fluctuation, the liquid metal 7 will repeatedly contact (friction) and separate from the friction material 6 of the grid structure, forming a power generation cycle, so as to achieve the purpose of solid-liquid contact power generation. When the water surface fluctuation becomes smaller or tends to be calm, due to the disc bottom-shaped structure at the bottom, the liquid metal 7 gradually converges to the bottom, so as to ensure that the power generation unit remains in contact with the water surface, and does not tilt at a large angle or the liquid metal 7 cannot return to the original position. Figure 6

[0040] ​The connecting ring 3 is made of a sturdy insulating material and is a circular structure that connects to the outer perimeter of the buoyancy chamber 1. It is used to connect the power generation units one by one to form a checkerboard or mesh-like power generation structure; it can also be connected to fixation ropes to achieve the function of anchoring.

[0041] The power interface 4 is waterproofed and reinforced so that the electrical energy flowing through the power output line 13 can be connected to an external battery or power supply line through the power interface 4, thus serving as a channel for external power transmission.

[0042] Both the induction electrode and the induction electrode connector 5 are made of solid conductive metal materials, typically low-cost and highly conductive aluminum and copper. The induction electrode connector 5 is located at the center of the induction electrode and protrudes into the buoyancy chamber 1 through the compartment diaphragm 12 at the top of the power generation chamber 2, to conduct the current generated in the induction electrode. The grid structure of the induction electrode is used to increase the contact area and frequency between the friction material 6 and the liquid metal 7, thereby improving the energy conversion efficiency.

[0043] The friction material 6 is made of any insulating material with a different electron-withdrawing capacity than the liquid metal 7, such as polyimide, polytetrafluoroethylene, and polyethylene terephthalate (PET). It is wrapped around the outside of the inductive electrode with a uniform thickness. Through the contact and separation between the friction material 6 and the liquid metal 7, charge transfer and flow between the electrode, friction material 6, and liquid metal 7 are achieved, thereby generating electricity.

[0044] Mercury is selected as the power generation medium in the liquid metal 7. When the power generation unit is placed horizontally, the liquid metal 7 gathers at the bottom of the pan-shaped structure of the power generation chamber 2, maintaining a relatively close distance from the friction material 6, but not in contact with it. Since the bottom of the pan-shaped structure is shallow, when the power generation unit sways with the waves, the liquid metal 7 will sway synchronously and frequently come into contact with, rub against, and separate from the friction material 6, thereby causing charge transfer and forming an electric current.

[0045] The bottom metal foil 8 is made of a highly conductive metal material and is attached to the inner part of the bottom-shaped structure of the power generation chamber 2, and is tightly bonded to the bottom of the power generation chamber 2 without displacement. The liquid metal 7 is placed on top of and in contact with it. When the liquid metal 7 comes into contact with and separates from the friction material 6, and charge transfer occurs, the transferred charge in the liquid metal 7 can be conducted to the bottom metal foil 8, and it remains in contact with the bottom metal foil 8 throughout the shaking process of the liquid metal 7, maintaining the continuity of current conduction.

[0046] The bottom electrode extension line 9 is made of a wire with a protective layer. Its lower part is connected to the bottom metal foil 8, and its upper part is placed inside the buoyancy chamber 1 through the compartment diaphragm 12. The liquid metal 7, the bottom metal foil 8, and the bottom electrode extension line 9 constitute a whole conductor, which can conduct the charge in the power generation effect of the liquid metal 7 to the upper part of the electrode extension line 9, and then connect it to the induction electrode connector 5 through the wire 10 and the power management system 11 to form a closed circuit.

[0047] The wire 10 is a common conductive wire, which connects the induction electrode connector 5 and the bottom electrode extension line 9 to the power management system 11, so that the induction electrode, liquid metal 7 and external load form a closed circuit.

[0048] The power management system 11 is located inside the buoyancy chamber 1. It can convert the alternating current generated by solid-liquid phase connection into direct current through rectification. At the same time, since the electrical energy generated by this structure has the characteristics of high voltage and low current, it is also necessary to perform voltage and current stabilization to ensure that the electrical energy can be directly connected and used.

[0049] The partition membrane 12 between the buoyancy chamber 1 and the power generation chamber 2 is made of insulating material and is located between the buoyancy chamber 1 and the power generation chamber 2. It is used to separate the buoyancy chamber 1 and the power generation chamber 2 into different functional areas, while ensuring the independence and airtightness of the two chambers, so that the liquid metal 7 does not flow into the buoyancy chamber 1 and cause a short circuit.

[0050] The power output line 13 connects the power management system 11 and the power interface 4. The usable electrical energy processed by the power management system 11 is divided into positive and negative terminals by the power output line 13 and connected to the power interface 4, so that the generated electrical energy can be exported and used.

[0051] This invention belongs to the field of green and low-carbon energy technology, which is environmentally friendly and pollution-free. It utilizes wave energy from the ocean for energy conversion, representing a novel technology and method for collecting and providing clean and renewable energy. The flat shape allows the power generation unit to fit snugly against the water surface, enhancing its sensitivity in collecting small-scale waves. The shallow, dish-shaped bottom of the power generation unit concentrates the liquid metal 7 at its center, leveraging gravity to maintain balance and ensure closer contact with the water surface. Simultaneously, during the collection of small-scale wave energy, the liquid metal 7 vibrates sensitively with the power generation unit, frequently contacting, rubbing, and separating from the friction material 6, achieving power generation and improving efficiency. The toothed or grid-like structure composed of the metal electrodes and the friction material 6 significantly increases the contact between the liquid metal 7 and the friction material 6. Compared to planar or other structures, the larger surface area effectively improves energy conversion efficiency. The liquid-solid connection power generation mode, due to the fluidity, low coefficient of friction, and high conductivity of the liquid metal 7, offers higher power generation efficiency, lower material wear, longer maintenance cycles, and lower operating costs compared to the commonly used solid-solid connection. The use of a bottom metal foil 8 attached to the bottom of the power generation unit ensures that the liquid metal 7 remains connected to the bottom metal foil 8 during shaking, forming a dynamically deformable conductor. Regardless of how the liquid metal 7 shakes, charge transfer and current conduction can always be achieved through the metal foil 8 and the bottom electrode extension line 9, forming a dynamically deformable closed circuit that ensures continuous current conduction. The power generation unit is expandable and customizable; unit modules can be added according to usage needs, and the power generation capacity can be adjusted at any time to meet the requirements of various operating environments.

[0052] Ocean wave energy is extremely abundant, with small-scale waves being more widely distributed and applicable to a wide range of environments. Collecting and utilizing small-scale wave energy can provide a large amount of renewable energy for the nation and society. This invention generates no pollutants during power generation, making it a green, low-carbon, and clean energy source that protects the environment and aligns with national development trends. Compared to other wave power generation technologies, the use of liquid metal allows for a more sensitive and rapid response to wave vibrations, enabling the collection of small-scale wave energy for power generation. Compared to solid ball collision or friction induction power generation, it offers a larger contact area and higher power generation efficiency. The use of liquid metal as the power generation material ensures a larger contact area with friction materials, improving energy conversion efficiency. Its low coefficient of friction reduces wear on the internal structure of the power generation unit, extending its lifespan, reducing maintenance and replacement frequency, lowering operating costs, and minimizing heat generated by frictional contact, further improving energy conversion efficiency. Its high conductivity reduces power transmission losses, further enhancing energy conversion efficiency.

[0053] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made in accordance with the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A liquid metal-based small-scale wave power generation device, characterized in that: The device includes multiple interconnected power generation units. Each power generation unit comprises a buoyancy chamber and a power generation chamber, both of which are internally sealed structures. The buoyancy chamber is located on top of the power generation chamber. The inner wall of the power generation chamber is made of an insulating material. The power generation chamber contains induction electrodes with a grid structure made of conductive metal material. The grid structure includes a rectangular plate that is completely attached to the top of the power generation chamber and multiple strips of the same specifications that are perpendicular to and spaced apart from the bottom of the rectangular plate. The rectangular plate completely covers the top surface of the power generation chamber, which is flat. The bottom surface of the strips is parallel to the top surface of the power generation chamber, and the front and rear end faces of the strips are respectively aligned with the power generation chamber. The front and rear ends of the power generation chamber are flush. The two sides of the grid structure are in contact with the two sides of the power generation chamber. The inner bottom surface of the power generation chamber is a concave disk-shaped structure. The distance between the bottom surface of the grid structure and the disk-shaped structure increases from the edge of the disk-shaped structure to the center of the disk-shaped structure. The edge of the disk-shaped structure is connected to the edge of the grid structure. The surface of the grid structure is covered with a layer of friction material. Liquid metal is injected into the disk-shaped structure. When the top surface of the power generation chamber is horizontal, there is a gap between the surface of the liquid metal and the bottom surface of the grid structure. The inner surface of the disk-shaped structure has a thin metal foil. The bottom surface of the buoyancy chamber has an induction electrode connector, which passes through the top surface of the power generation chamber and connects to the induction electrode of the grid structure. The wires leading out from the induction electrode connector and the electrode extension lines leading out from the metal foil sheet at the bottom of the power generation chamber are both connected to the power output line. The outside of the power generation chamber is also a sealed structure made of sturdy and lightweight insulating material. The upper part is a flat three-dimensional structure with the same bottom surface as the bottom surface of the buoyancy chamber. The lower part is a bowl-shaped or plate-shaped structure that gradually converges towards the center of the bottom surface and has a shallow depth.

2. The liquid metal-based small-scale wave power generation device according to claim 1, characterized in that: The buoyancy chamber has a power interface on its side, and the power output line is connected to the power interface.

3. The liquid metal-based small-scale wave power generation device according to claim 2, characterized in that: It also includes a power management system located inside the buoyancy chamber. The wires leading out from the induction electrode connector and the electrode extension wires leading out from the metal foil at the bottom of the power generation chamber are all electrically connected to the power output line after passing through the power management system.

4. The liquid metal-based small-scale wave power generation device according to any one of claims 1-3, characterized in that: Connecting rings are provided on all four outer surfaces of the buoyancy chamber.

5. The liquid metal-based small-scale wave power generation device according to claim 4, characterized in that: The friction material is polyimide, polytetrafluoroethylene, and polyethylene terephthalate.

6. The liquid metal-based small-scale wave power generation device according to claim 4, characterized in that: The liquid metal is mercury or gallium.

Images