Liquid metal-based small-scale wave power generation device

Abstract

The invention provides a liquid metal-based small-scale wave power generation device which comprises a plurality of power generation units, each power generation unit comprises a buoyancy bin and a power generation bin, the buoyancy bins and the power generation bins are each of a closed structure, induction electrodes which are made of conductive metal materials and are of a grid structure are arranged in the power generation bins, and the inner bottom faces of the power generation bins are of an inwards-concave disc bottom type structure; the distance between the bottom face of the grid structure and the disc bottom type structure is gradually increased 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 is connected with the edge of the grid structure, the surface of the grid structure is coated with a layer of friction material, liquid metal is injected into the disc bottom type structure, and a thin metal foil is arranged on the inner surface of the disc bottom type structure. An induction electrode connector is arranged on the bottom face in the buoyancy bin, the induction electrode connector penetrates through the top face of the power generation bin to be connected with an induction electrode of a grid structure, and an electric wire led out of the induction electrode connector and an electrode extension wire led out of a thin metal foil at the bottom of the power generation bin are both connected with a power output wire.

Description

Technical Field

[0001] The present invention relates to the technical field of ocean wave energy micro-nano conversion, and in particular to a liquid metal-based small-scale wave power generation device. Background Art

[0002] In the application of friction nanogenerators, most of them use solid-solid contact to generate friction power. The friction power generation between solids can easily generate heat energy, and part of the absorbed wave kinetic energy is converted into heat energy, thereby reducing the energy conversion efficiency. The effectiveness of solid friction contact will be greatly affected by the roughness and matching degree of the two contact surfaces, which has high requirements on the manufacturing process and is difficult to meet unified standards. In addition, necessary hard friction is required in the process of solid friction power generation, which will inevitably cause material loss and deformation, which can easily lead to a significant attenuation of energy conversion or damage to the device, and requires more frequent updates and maintenance, which increases the workload and the cost of use, and is difficult to carry out and maintain in practical applications. At the same time, in order to collect fluctuating wave energy, many inventions use built-in spherical collision or contact to convert energy. Although the use of spheres can achieve the purpose of absorbing energy in unstable directions, its solid contact surface is only a point, and the energy conversion has great limitations, and the power generation efficiency is low. Summary of the invention

[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 their short wavelengths, small-scale waves usually have a higher frequency of fluctuation, and correspondingly, their periods are also shorter. This means that the waves change more times per unit time and rise and fall more rapidly. The energy of small-scale waves is relatively dispersed. Although the energy carried by a single wave is not large, a large number of small-scale waves exist at the same time, together forming a fluctuating energy field on the ocean surface.

[0004] Small-scale waves are ubiquitous on the sea surface and are not strictly restricted by geographical location and climatic conditions, which makes small-scale wave power generation widely applicable. At the same time, as a clean energy source, small-scale wave power generation does not produce greenhouse gases and other harmful substances during its development and utilization, and has minimal impact on the environment. Compared with traditional fossil energy power generation, this is significantly more environmentally friendly. With the increasing global awareness of environmental protection, small-scale wave power generation will become one of the important directions for future energy development.

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

[0006] The present invention utilizes the liquid metal structure principle in the horizontal sliding friction nanogenerator to collect and convert small-scale wave energy to achieve the purpose of converting kinetic energy into electrical energy. The power generation unit can collect energy from the sea surface point range. The power generation units are connected to each other to form a chessboard or mesh surface, which can form a power generation network to collect more small-scale wave energy and thus convert more electrical energy. Liquid-solid contact is used to generate electricity. Liquid metal, as a metal material, has been widely studied due to its excellent physical properties such as high electrical conductivity and good flexibility. It has broad application prospects in chip cooling, electronic printing and energy science (including lithium batteries and thermoelectric batteries, etc.). Triboelectric charging is a surface charging effect. Compared with solid-solid contact, liquid-solid contact will increase the contact area, make the contact closer, and reduce the friction coefficient.

[0007] Liquid metal-based friction nanogenerators have significant advantages over solid-solid contact in terms of material properties, energy conversion efficiency, application areas, and environmental friendliness. Liquid metal contact has excellent performance, including a high effective contact area, shape adaptability, and a low friction coefficient, which greatly improves the energy conversion efficiency; at the same time, the easy flow of liquid metal makes it very suitable for collecting vibration energy, which is very consistent with the fluctuation state of small-scale waves, so it can better convert the kinetic energy of the fluctuation into electrical energy for storage and utilization.

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

[0009] It operates by using the coupling effect of triboelectricity and electrostatic induction, and can convert a series of mechanical stimuli such as vibration, rotation, expansion and contraction into electrical energy. On this basis, liquid metal-based friction nanogenerators use 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 effect and electrostatic induction effect, charge separation will occur between the liquid metal and the other material, thereby forming an electric potential difference, driving electrons to flow in the external circuit and generating electrical energy.

[0010] like Figure 4 As shown in the figure, LM-TENG consists of two parts, one is a thin sheet consisting of a friction material body 15 and its electrode 16, and the other is liquid metal 14. Any insulating material with different electron absorption ability from the liquid metal 14 can be used as a 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. There are also a variety of materials for liquid metal 14 to choose from, such as mercury, gallium, etc. Figure 5 As shown, the workflow is as follows: 1. When the thin sheet is partially immersed in the liquid metal, the friction material body 15 begins to contact the liquid metal 14. Due to the different electron-absorbing abilities of the two, electrons will be injected from the liquid metal 14 into 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 generates a net positive charge, such as Figure 5 (I) as shown; 2. When the sheet is removed from the liquid metal 14, the friction charge in the interface area is separated, which will make the potential of the liquid metal 14 higher than that of the sensing 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, such as Figure 5 (II) as shown; 3. During this process, the electrons continue to flow until the sheet is completely removed, at which point the induced potential difference and the amount of transferred charge between the electrode 16 and the liquid metal 14 both reach their maximum values, e.g. Figure 5 (III) shown.

[0011] When the sheet moves back to the liquid metal 14, the potential difference will decrease as the wetted area of ​​the sheet increases. Therefore, the electrons will flow from the liquid metal 14 back to the electrode 16 in the opposite direction, as shown in FIG. Figure 5 (IV). Therefore, the whole process will produce AC pulse output.

[0012] The technical solution adopted by the present invention is: a liquid metal-based small-scale wave power generation device, including a plurality of interconnected power generation units, the power generation unit including a buoyancy chamber and a power generation chamber, both of which are sealed structures inside, the buoyancy chamber is located on the top of the power generation chamber, the inner wall of the power generation chamber is an insulating layer material, the power generation chamber has an induction electrode with a grid structure made of conductive metal material, the grid structure includes a rectangular plate that is completely in contact with the top of the power generation chamber and a plurality of strips of the same specification that are perpendicular to the bottom of the rectangular plate and spaced apart, the rectangular plate completely covers the top surface of the power generation chamber, the top surface of the power generation chamber is a plane, the bottom surface of the strip is parallel to the top surface of the power generation chamber, and the The front and rear end surfaces of the strips are respectively flush with the front and rear end surfaces of the power generation bin, the two sides of the grid structure are respectively in contact with the two side surfaces of the power generation bin, the inner bottom surface of the power generation bin is 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, liquid metal is injected into the disc bottom structure, 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, and the inner surface of the disc bottom structure has a metal foil; An induction electrode connector is provided on the bottom surface of the buoyancy chamber, and the induction electrode connector passes through the top surface of the power generation chamber and is connected to the induction electrode of the grid structure. The wires led out from the induction electrode connector and the electrode extension wires led out from the metal foil at the bottom of the power generation chamber are both connected to the power output wire.

[0013] Optionally, a side of the buoyancy chamber has a power interface, and the power output line is connected to the power interface.

[0014] Optionally, it also includes a power management system, which is located in the buoyancy chamber. The wires led out from the induction electrode connector and the electrode extension wires led out from the metal foil at the bottom of the power generation chamber are electrically connected to the power output wire after passing through the power management system.

[0015] Optionally, connecting rings are provided on four outer sides of the buoyancy chamber.

[0016] Optionally, the friction material is polyimide, polytetrafluoroethylene and polyethylene terephthalate (PET).

[0017] Optionally, the liquid metal is mercury or gallium.

[0018] The advantages and positive effects of the present invention are as follows: the present invention does not generate large heat energy in liquid-solid contact, and has high electrical conductivity, which greatly improves the energy conversion efficiency; due to the flow characteristics of the liquid, the liquid metal and the solid friction material can complete the fitting and friction more flexibly, and will not be restricted by the contact surface process, which greatly reduces the process difficulty and ensures the uniformity of energy conversion; the solid material will not be worn during the liquid-solid contact process, so that the power generation unit can maintain its original state for a long time, and will not cause the attenuation of energy conversion due to the use time, reducing the frequency of updating and maintenance, reducing the workload and use cost, and is very friendly to practical applications; due to the fluidity of the liquid, when the water surface fluctuates, it will drive the power generation unit to fluctuate at the same frequency, the liquid metal will quickly receive the reaction, and then fluctuate to contact the friction material, and complete the power generation cycle as the fluctuation continues; at the same time, the friction material adopts a toothed structure, combined with the liquid characteristics of the liquid metal, which can greatly increase the contact area and the sensitivity of the reaction, making the contact more intimate and frequent, and compared with the single-point contact of the sphere, greatly improving the energy conversion efficiency and power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of a partial cross-sectional structure; Figure 3 yes Figure 1Schematic diagram of the internal structure of the power generation warehouse; Figure 4 , Figure 5 It is a schematic diagram of the power generation principle of the prior art; Figure 6 for Figure 1 Schematic diagram of the workflow structure; Figure 7 for Figure 1 A text diagram of the workflow; In the figure: 1. Buoyancy chamber; 2. Power generation chamber; 3. Connecting ring; 4. Power interface; 5. Induction electrode connector; 6. Friction material; 7. Liquid metal; 8. Thin metal foil; 9. Electrode extension cable; 10. Wire; 11. Power management system; 12. Chamber diaphragm; 13. Power output cable; 14. Liquid metal; 15. Friction material body; 16. Electrode; 17. Wire; 18. Load. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] like Figure 1-Figure 3As shown, the present invention provides a liquid metal-based small-scale wave power generation device, including a plurality of interconnected power generation units, the power generation unit including a buoyancy chamber 1 and a power generation chamber 2, the buoyancy chamber 1 is located on the top of the power generation chamber 2, the inner wall of the power generation chamber 2 is an insulating layer material, the power generation chamber 2 has a grid structure of induction electrodes made of conductive metal material (copper or aluminum), the grid structure includes a rectangular plate that is completely in contact with the top surface of the power generation chamber 2 and completely covers the top surface of the power generation chamber 2, and a plurality of strips of the same specification that are perpendicular to the rectangular plate and spaced apart, the top surface of the power generation chamber 2 is a plane, the bottom surface of the strip is parallel to the top surface of the power generation chamber 2, and the front and rear surfaces of the strips are parallel to the top surface of the power generation chamber 2. The rear end surface is flush with the front and rear end surfaces of the power generation bin 2, respectively. The two sides of the grid structure 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 distance 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 6. Liquid metal 7 is injected into the disc bottom structure. 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. The inner surface of the disc bottom structure has a metal foil 8. An induction electrode connector 5 is provided on the bottom surface of the buoyancy chamber 1, and the induction electrode connector 5 passes through the top surface of the power generation chamber 2 to be connected to the induction electrode of the grid structure. The wire 10 led out from the induction electrode connector 5 and the electrode extension wire 9 led out from the metal foil 8 at the bottom of the power generation chamber 2 are both connected to the power output wire 13.

[0022] A power interface 4 is provided on the side of the buoyancy chamber 1 , and a power output line 13 is connected to the power interface 4 .

[0023] It also includes a power management system 11, which is located in the buoyancy chamber 1. The wires 10 led out from the induction electrode connector 5 and the electrode extension wires 9 led out from the metal foil 8 at the bottom of the power generation chamber 2 are both electrically connected to the power output wire 13 after passing through the power management system 11.

[0024] Connecting rings 3 are arranged on the four outer surfaces of the buoyancy chamber 1 .

[0025] The friction materials are polyimide, polytetrafluoroethylene and polyethylene terephthalate (PET).

[0026] The liquid metals are mercury and gallium.

[0027] The buoyancy chamber 1 in the above structure is a closed structure made of strong and light insulating materials on the outside, and the inside can be a vacuum, a flat three-dimensional structure, and the upper and lower bottom surfaces should be circular, square or polygonal with even sides. Its closed and flat structure prevents the components in the chamber from contacting with water or water vapor, and provides a large buoyancy for the power generation unit, ensuring that the power generation unit can float flat on the sea surface. When the water surface fluctuates, the power generation unit can fluctuate with the same frequency as the water surface, so that the liquid metal 7 and the friction material 6 contact or separate, and achieve the purpose of power generation; the symmetrical structure of the upper and lower bottom surfaces is to ensure that the power generation unit remains horizontal on the calm water surface, so as not to tilt to one side and affect the energy conversion efficiency.

[0028] The exterior of the power generation chamber 2 is also a closed structure made of solid and lightweight insulating materials. The upper part is a flat three-dimensional structure, the upper bottom surface is the same as the bottom surface of the buoyancy chamber 1, and the lower part is a bowl-shaped (or plate-shaped) structure that gradually concentrates toward the center of the bottom surface and has a shallow depth. The upper part is mainly equipped with induction electrodes and friction materials 6, and the lower part is used to contain liquid metal 7. When the water surface is calm, the liquid metal 7 is concentrated at the bottom of the power generation chamber 2; Figure 6 As shown, when the water surface fluctuates, the liquid metal 7 concentrated at the bottom of the power generation chamber 2 also shakes and comes into contact with the friction material 6. During the shaking process, the liquid metal 7 will continuously contact (rub) and separate from the friction material 6 with the grid structure, forming a power generation working cycle, thereby achieving the purpose of solid-liquid contact power generation; when the water surface fluctuation becomes smaller or tends to be calm, due to the bottom plate structure, the liquid metal 7 gradually gathers to the bottom, ensuring that the power generation unit maintains a fit with the water surface without tilting at a large angle or the liquid metal 7 being unable to return to its original position.

[0029] The connecting ring 3 is made of a solid insulating material and is a circular ring structure connected to the outer side of the buoyancy chamber 1. It is used to connect the power generation units one by one to form a chessboard or mesh-shaped power generation body; it can also be connected to a fixed rope to achieve an anchoring effect.

[0030] The power interface 4 is waterproofed and reinforced so that the electric energy flowing through the power output line 13 can be connected to an external battery or power supply line through the power interface 4, thereby playing the role of an electric energy transmission channel.

[0031] The induction electrode and the induction electrode connector 5 are both made of solid conductive metal materials, generally aluminum and copper with low cost and good conductivity. The induction electrode connector 5 is located at the center of the induction electrode, protruding into the buoyancy chamber 1 through the compartment diaphragm 12 on the top of the power generation chamber 2, and is used to conduct the current formed in the induction electrode; the induction electrode grid structure is used to increase the contact area and frequency between the friction material 6 and the liquid metal 7, and improve the energy conversion efficiency.

[0032] The friction material 6 is made of any insulating material with different electron-absorbing ability from the liquid metal 7, and polyimide, polytetrafluoroethylene and polyethylene terephthalate (PET) can be selected. It is wrapped around the outside of the sensing electrode with uniform thickness. Through the contact and separation of the friction material 6 and the liquid metal 7, the charge transfer and flow between the electrode, the friction material 6 and the liquid metal 7 are completed, thereby achieving the purpose of power generation.

[0033] Liquid metal 7 uses mercury as a power generation medium. When the power generation unit is placed horizontally, liquid metal 7 gathers at the bottom of the pan-bottom structure of the power generation chamber 2, and maintains a relatively close distance with the friction material 6, but does not touch it. Since the bottom depth of the pan-bottom structure is relatively shallow, when the power generation unit shakes with the waves, liquid metal 7 will shake synchronously and frequently touch, rub and separate from the friction material 6, thereby causing charge transfer and forming current.

[0034] The bottom metal foil 8 is made of a metal material with good conductivity, fits the inner part of the bottom 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 and connected to it. When the liquid metal 7 contacts 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 in the process of the liquid metal 7 shaking, it is always in contact with it to maintain the continuity of current conduction.

[0035] The bottom electrode extension line 9 is composed of a wire with a protective layer, the lower part is connected to the bottom metal foil 8, and the 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 to the induction electrode connector 5 through the wire 10 and the power management system 11 to form a closed circuit.

[0036] The wire 10 is a common conductive wire, which respectively connects the sensing electrode connector 5 and the bottom electrode extension wire 9 to the power management system 11, so that the sensing electrode, the liquid metal 7 and the external load form a closed circuit.

[0037] The power management system 11 is placed inside the buoyancy tank 1, and can convert the alternating current generated by the solid-liquid phase connection power generation into direct current through rectification. At the same time, since the electric energy generated by this structure has the characteristics of high voltage and low current, it is also necessary to stabilize the voltage and current of the electric energy to ensure that the electric energy can be directly connected and used.

[0038] The compartment diaphragm 12 between the buoyancy compartment 1 and the power generation compartment 2 is made of insulating material and is located between the buoyancy compartment 1 and the power generation compartment 2 to separate the buoyancy compartment 1 and the power generation compartment 2 into different functional areas, while ensuring the independence and airtightness of the two compartments to prevent the liquid metal 7 from flowing into the buoyancy compartment 1 and causing a short circuit.

[0039] The power output line 13 connects the power management system 11 and the power interface 4. The usable electric energy processed by the power management system 11 is divided into positive and negative poles by the power output line 13 and connected to the power interface 4, so that the generated electric energy can be exported and used.

[0040] The present invention belongs to green and low-carbon energy technology, is environmentally friendly and pollution-free, utilizes wave energy in the ocean to carry out energy conversion, and is a new type of technology and means for collecting and providing clean and renewable energy; the flat appearance structure can make the power generation unit fit with the water surface, thereby improving the sensitivity of the power generation unit in collecting small-scale waves; the bottom of the power generation unit is a shallow dish bottom structure, which can gather the liquid metal 7 to the bottom of the center of the power generation unit, exert the effect of gravity concentration, keep the power generation unit balanced, and fit more closely with the water surface; at the same time, in the process of collecting small-scale wave energy, the liquid metal 7 can be made to vibrate sensitively with the power generation unit, and frequently contact, rub, and separate with the friction material 6, so as to achieve the purpose of generating electricity and improving the power generation efficiency; the toothed or grid structure composed of the metal electrode and the friction material 6 can greatly increase the contact between the liquid metal 7 and the friction material 6 area, which can effectively improve the energy conversion efficiency compared with a flat surface or other structures; the liquid-solid connection power generation mode, due to the fluidity, low friction coefficient and high conductivity of the liquid metal 7, is higher in power generation efficiency, lower in material wear, longer in maintenance cycle and lower in use cost than the commonly used solid-solid connection; the use of the bottom metal foil 8 that fits the bottom of the power generation unit ensures that the liquid metal 7 always remains connected to the bottom metal foil 8 during the shaking process, forming a dynamically deformable conductor. No matter how the liquid metal 7 shakes, it can always transfer charges and conduct current through the metal foil 8 and the bottom electrode extension line 9 to form a dynamically deformable closed circuit, thereby ensuring the continuity of current conduction; the power generation unit is expandable and customizable, and 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 usage environments.

[0041] The wave energy in the ocean is extremely abundant, and the small-scale waves are more widely distributed and applicable to a large range of environments. The collection and utilization of small-scale wave energy can provide a large amount of renewable energy for the country and society. The present invention does not produce any pollutants during the power generation process, is a green, low-carbon, clean energy, protects the environment, and conforms to the national development trend. Compared with other wave power generation technologies, due to the use of liquid metal, it can react more sensitively and quickly to wave vibrations, thereby collecting small-scale wave energy to achieve the purpose of power generation. Compared with solid ball collision or friction induction power generation, the contact area is larger and the power generation efficiency is higher. Since liquid metal is selected as the power generation material, its fluidity ensures that it can have a larger contact area with the friction material, thereby improving the energy conversion efficiency. Its low friction coefficient ensures that the internal structure of the power generation unit will have less wear, thereby increasing the service life of the power generation unit, reducing the maintenance and replacement frequency, and reducing the cost of use. At the same time, it reduces the heat energy generated by friction contact and improves the energy conversion efficiency. Its high conductivity reduces the power transmission loss of the power generation unit and further improves the energy conversion efficiency.

[0042] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A liquid metal-based small-scale wave power generation device, characterized in that: The invention comprises a plurality of interconnected power generation units, wherein the power generation units comprise a buoyancy chamber and a power generation chamber, both of which are sealed structures inside, the buoyancy chamber is located on the top of the power generation chamber, the inner wall of the power generation chamber is made of insulating layer material, the power generation chamber has an induction electrode with a grid structure made of conductive metal material, the grid structure comprises a rectangular plate completely fitted with the top of the power generation chamber and a plurality of strips of the same specification which are perpendicular to and spaced from the bottom of the rectangular plate, the rectangular plate completely covers the top surface of the power generation chamber, the top surface of the power generation chamber is a plane, the bottom surface of the strip is parallel to the top surface of the power generation chamber, the front and rear end surfaces of the strip are respectively aligned with the top surface of the power generation chamber, and the bottom surface of the strip is parallel to the top surface of the power generation chamber, and ... bottom surface of the strip is parallel to the top surface of the power generation chamber, and the front and rear end surfaces of the strip are respectively aligned with the top surface of the power generation chamber, and the bottom surface of the strip is parallel to the top surface of the power generation chamber, and the bottom surface of the strip is parallel to the top surface of the power generation chamber, and the bottom surface of the strip is parallel to the top surface of the power generation chamber, and the bottom surface of the strip is parallel to the top surface of the power generation chamber, and the bottom surface of the strip is parallel The front and rear end surfaces of the power generation bin are flush, the two sides of the grid structure are in contact with the two side surfaces of the power generation bin respectively, the inner bottom surface of the power generation bin is 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, liquid metal is injected into the disc bottom structure, 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, and the inner surface of the disc bottom structure has a metal foil; An induction electrode connector is provided on the bottom surface of the buoyancy chamber, and the induction electrode connector passes through the top surface of the power generation chamber and is connected to the induction electrode of the grid structure. The wires led out from the induction electrode connector and the electrode extension wires led out from the metal foil at the bottom of the power generation chamber are both connected to the power output wire.

2. The liquid metal-based small-scale wave power generation device according to claim 1, characterized in that: The side of the buoyancy chamber is provided with a power interface, 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, which is located in the buoyancy chamber. The wires led out from the induction electrode connector and the electrode extension wires led out from the metal foil at the bottom of the power generation chamber are electrically connected to the power output wire 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 to 3, characterized in that: Connecting rings are arranged on the 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 metals are mercury and gallium.

Images