Networking chain type floating raft friction nanometer generator and energy collector

Abstract

The utility model provides a networking chain type floating raft friction nanometer generator, which comprises a modularized raft type shell, and metal interdigital electrodes are attached to the upper surface and the lower surface of the inside of the raft type shell. A soft contact type friction layer is vertically pasted in a gap of the metal interdigital electrode; the swinging structure comprises a swinging sheet and a bottom plate; a gap exists between the swing structure and the metal electrode layer, and the swing structure and the soft contact type friction layer are in contact friction with each other; the rolling power generation device unit is of a multi-layer arc-shaped structure, and the small dielectric balls are arranged in the arc-shaped body; the friction nanometer generator is made into a floating raft structure, so that the friction nanometer generator floats on the ocean, and wave energy of the ocean is fully utilized; the raft body connection mode is based on chain type connection, the wave energy power generation device units are connected in series or in parallel to form the networking type chain type floating raft wave energy power generation system, and the energy collection capacity of a power generator is improved.

Description

Technical Field

[0001] This invention relates to the field of triboelectric nanogenerators, and more particularly to a floating raft-type triboelectric nanogenerator based on a chain-structure connection. Background Technology

[0002] With rapid socio-economic development, human demand for energy is increasing, as is the consumption of non-renewable energy sources. Oil shortages and environmental pollution have become global challenges. New energy sources, such as wind, wave, and solar power, are receiving increasing attention from researchers. Human demand for energy is rising significantly, and traditional energy sources will struggle to meet this demand.

[0003] Existing wave energy utilization methods include electromagnetic power generation, piezoelectric power generation, and triboelectric power generation. Electromagnetic generators produce current by driving a generator coil through a transmission structure to cut magnetic field lines. While they exhibit excellent energy harvesting characteristics in high-frequency environments, they are poorly adapted to the low-frequency characteristics of waves. Furthermore, they suffer from high manufacturing costs and difficult maintenance. Piezoelectric generators, based on the positive piezoelectric effect, offer stable output in low-frequency environments, but their structural design has limitations. These limitations significantly restrict their application and development in the field of wave energy harvesting.

[0004] In 2012, Academician Wang Zhonglin invented the triboelectric nanogenerator, whose working principle is based on the coupling of triboelectric effect and electrostatic induction effect. When two different materials come into contact with each other under the drive of an external force, the surfaces of the two materials will induce electrostatic charges of opposite polarity and equal magnitude. When the two contact surfaces separate under the action of an external force, the potential difference generated by the separation of the two electrostatic charges will drive electrons to flow between the surface electrodes attached to the two materials respectively, thereby generating current output. Triboelectric nanogenerators have significant advantages such as small size and light weight, flexible structural design, simple fabrication and a wide range of material choices. Therefore, the use of triboelectric nanogenerators to harvest wave energy has become a research hotspot in recent years.

[0005] However, existing energy harvesting devices based on the principle of triboelectricity have many problems, such as: 1. The energy harvesting efficiency of the energy harvesting device is very low in low-frequency and high-entropy environments; 2. In the process of energy harvesting, the mutual friction between materials leads to a short lifespan; 3. Wave energy harvesting devices are rarely used in array integration.

[0006] Therefore, it is necessary to develop a triboelectric nanogenerator energy harvesting device with long durability, high structural flexibility, high energy conversion efficiency, and network-compatible applications in low-frequency environments. Utility Model Content

[0007] This invention provides a networked chain-type floating raft triboelectric nanogenerator that combines triboelectric nanogenerator with wave energy harvesting, converting low-frequency, high-entropy wave motion into electrical energy, thus solving the problems in the background technology.

[0008] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0009] A networked chain-type floating raft triboelectric nanogenerator includes: a raft-type outer shell, a oscillating power generation unit, and a rolling power generation unit; the raft-type outer shell includes four raft-type outer shells, two of which have modular closed shell structures with combined end caps; the oscillating power generation unit includes an oscillating structure, a metal interdigitated electrode layer, a soft contact triboelectric layer, and a dielectric film; the oscillating structure includes a steel shaft, bearings, oscillating plates, and a base plate; bearings are provided on both sides of the raft-type outer shell end caps, and the steel shaft passes through the bearings and the raft-type outer shell end caps; the metal interdigitated electrode layer is located on the inner surface of the raft-type outer shell; the soft contact triboelectric layer is vertically fixed in the gaps between the metal interdigitated electrode layers, and there is a certain distance between the metal interdigitated electrode layer and the base plate; a dielectric film is attached to the bottom of the base plate, and the base plate electrode layer generates charge during the contact and friction oscillation process with the soft contact triboelectric layer.

[0010] The rolling power generation unit includes an arc-shaped cavity, dielectric spheres, arc-shaped partitions, a cavity cover, a dielectric film, and a metal electrode layer. The cavity is fixed on a steel shaft. The bottom surface of the arc-shaped cavity has an arc-shaped structure with grooves on the inside, which can fix the partitions in the grooves. Inside the arc-shaped cavity, arc-shaped partitions are fixed at the top and bottom to separate several dielectric spheres. A metal electrode layer is attached to the underside of the dielectric film and connected to an external circuit by wires. The metal electrodes are attached to the upper surface of each arc-shaped partition. The dielectric spheres are placed on the dielectric film... On the thin film, a cavity cover plate forms a closed arc-shaped cavity; the triboelectric nano-power generation unit is disposed inside the raft shell and within the arc-shaped cavity; the connecting structure connects different raft shells to each other, including a U-shaped plate, bearings, chain plates, and chain plate end caps; the outer sides of the raft shells have U-shaped plates on both sides, with circular bosses on their outer sides, which cooperate with the bearings and are connected by chain plates, allowing the raft shells to swing freely; the synchronization structure is located on the outer side of the raft shell and at the end of the steel shaft, including a shaft end ring, a shaft end cap, and a swing rod;

[0011] In some embodiments of this disclosure, there is a gap between the base plate and the metal interdigitated electrode layer, preferably 0.5 mm to 2 mm;

[0012] Optionally, the modular raft shell consists of 6 parts; both the raft shell and the raft shell end caps are made of polylactic acid.

[0013] Optionally, the dielectric film is made of a thin film material with a high relative permittivity;

[0014] Optionally, the thickness of the interdigitated metal electrode layer is between 50 nm and 1 mm;

[0015] In some embodiments of this disclosure, the soft contact friction layer is located within the range that can contact the swinging structure during the swinging process, and has a large difference in electronegativity compared with the material of the base plate layer. One end of the layer is attached to the gap between the metal electrodes on the inner wall of the housing, while the other end can move freely.

[0016] Optionally, the base plate material is polylactic acid;

[0017] Optionally, the soft contact friction layer material may be one or more of the following materials: animal fur, polymer film material.

[0018] In some embodiments of this disclosure, the pendulums in the oscillating structure are arranged such that the pendulums on the same steel shaft form a group of pendulums on the same straight line, and the lower part of the pendulum group is fixed to the bottom plate layer; the upper part of the pendulums in the oscillating structure is hollowed out to form a weight difference, or a counterweight is fixed on the bottom plate layer so that the total weight below the pendulums is greater than the total weight above the pendulums;

[0019] Preferably, the number of arrangement pieces is 4, and it is an even number;

[0020] Optionally, the material of the display piece is acrylic sheet;

[0021] In some embodiments of this disclosure, the rolling power generation unit structure is one or more of the following structures: the upper surface of the arc-shaped partition has a metal electrode or a metal interdigitated electrode, and the metal electrode is plated on the bottom of the dielectric film and attached to the upper surface of the arc-shaped partition.

[0022] Optionally, the thickness of the metal electrode or metal interdigitated electrode layer is 50 nm-1 mm;

[0023] Optionally, three triboelectric nanogenerators are arranged vertically inside the arc-shaped cavity;

[0024] Optionally, the dielectric film is a polymer material or a thin film material with a high dielectric constant;

[0025] Optionally, the dielectric microspheres in the arc-shaped cavity are made of a high-molecular polymer with a diameter between 4mm and 10mm, and the surface of the dielectric microspheres is sanded.

[0026] Optionally, the cavity cover is made of acrylic sheet.

[0027] In some embodiments of this disclosure, the connection structure is a chain-like connection that can connect different raft shells to each other; the outer sides of the raft body connection have U-shaped plates with circular bosses on their outer sides, which cooperate with bearings and are connected by chain plates, allowing the raft bodies to swing freely.

[0028] Optionally, the U-shaped plate, chain plate, and chain plate end cap are all made of polylactic acid.

[0029] In some embodiments of this disclosure, the synchronization structure, located on the outside of the raft shell, includes a shaft end ring, a shaft end cap, and a swing rod; the shaft end ring is fixed on the shell end cap, and the shaft end cap is fixed to the shaft end; the swing rod has three bosses, the two side bosses are of equal height, the middle boss is higher, the two side bosses are fixed to the end cap, and the outer side of the raft shell has a plate annular groove, the middle boss cooperates with the groove;

[0030] Optionally, the shaft end ring, shaft end cap, and rocker arm are all made of polylactic acid.

[0031] According to another aspect of this disclosure, an energy harvesting device is provided, comprising any of the networked chain floating raft triboelectric nanogenerators mentioned in this disclosure;

[0032] Optionally, the triboelectric nanogenerator is a wave energy harvester. Beneficial effects

[0033] As can be seen from the above technical solutions, the networked chain-type floating raft triboelectric nanogenerator and energy harvester provided in this disclosure have the following beneficial effects:

[0034] 1. Because the weight below the pendulum in the oscillating structure is greater than the weight above, a mass difference is formed between the upper and lower parts. Under the action of external low-frequency excitation, the two pairs of oscillating mechanisms will oscillate back and forth around the steel shaft axis, thereby converting the external low-frequency irregular energy into the mechanical energy of the oscillating mechanism. A metal interdigitated electrode layer is provided on the inner surface of the raft-shaped shell, and the soft contact friction layer is vertically fixed in the gap of the metal interdigitated electrode layer. The oscillating mechanism has a gap between its base plate layer and the metal interdigitated electrode layer to reduce frictional resistance. The base plate layer itself carries a charge or generates a charge during the oscillation process with the oscillating structure. Due to the electrostatic induction between the base plate layer and the metal interdigitated electrodes, a potential difference is formed, generating current output. Low-frequency irregular external excitation can make the oscillating structure oscillate back and forth, prolonging the power generation time and improving the average output power and energy conversion efficiency of the triboelectric nanogenerator.

[0035] 2. In one embodiment, during the excited oscillation process, the bottom plate layer of the oscillation mechanism comes into contact with the soft contact friction layer, thereby generating an electric charge; the oscillation mechanism reciprocates and oscillates, continuously generating an electric charge, which can improve the output power; the friction between the bottom plate layer and the soft contact layer results in low frictional resistance, which can extend the service life.

[0036] 3. In one embodiment, three triboelectric nanogenerators are vertically arranged inside the arc-shaped cavity of the rolling power generation device. A metal electrode is fixed on the partition, and several dielectric balls that have been sanded are placed on top of it. The balls roll and rub against the arc-shaped metal electrode, which can increase the friction area and thus improve the output efficiency.

[0037] 4. In one embodiment, the boss of the swing rod in the synchronization structure is placed in the semi-circular annular groove on the outside of the raft shell, and the bosses on both sides are fixed with the boss at the shaft end, so that the two steel shafts rotate at the same frequency and the swing structure swings in the same direction, which can improve the energy utilization rate and enhance the stability of the device.

[0038] 5. In one embodiment, the connection structure between different raft shells adopts a chain structure connection. The connection structure is prepared by 3D printer, which makes the structure easier to process and lowers the cost. The chain connection can improve the flexibility of the collection device, increase the feasibility of distributed networking, and improve the energy capture efficiency.

[0039] 6. By setting up a modular raft shell, the area of ​​the power generation unit of the triboelectric nanogenerator is increased, thereby increasing the power generation efficiency. The raft shell can easily float on the sea surface, which is more conducive to collecting the energy generated by waves. It has high stability and high durability and has broad application prospects. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a networked chain floating raft triboelectric nanogenerator according to the first embodiment of this disclosure.

[0041] Figure 2 For example Figure 1 The diagram shows the raft-shaped outer shell structure of the chain-type floating raft triboelectric nanogenerator.

[0042] Figure 3 For example Figure 1 The diagram shows the oscillating structure of a chain-type floating raft triboelectric nanogenerator.

[0043] Figure 4 For example Figure 1 The diagram shows the rolling structure of a chain-type floating raft triboelectric nanogenerator.

[0044] Figure 5 For example Figure 1 The diagram shows the connection structure of a chain-type floating raft triboelectric nanogenerator.

[0045] Figure 6 For example Figure 1 The diagram shows the synchronization structure of a chain-type floating raft triboelectric nanogenerator.

[0046] [Symbol Explanation]

[0047] 1- Raft-type outer shell;

[0048] 101-104-Combined raft-type outer shell; 105-Raft-type outer shell end cap;

[0049] 2-Connection structure;

[0050] 201-U-shaped plate; 202-Chain plate; 203-Connecting bearing; 204-Chain plate end cap; 205-Boss;

[0051] 3-Synchronization structure;

[0052] 301 - Shaft end ring; 302 - Shaft end cap; 303 - Rocker arm;

[0053] 4- Soft contact friction layer;

[0054] 5- Oscillating structure;

[0055] 501-Steel shaft; 502-Bearing; 503-Swing plate; 504-Base plate; 505-Dielectric film one;

[0056] 6-Rolling structure;

[0057] 601-Arc-shaped cavity; 602-Dielectric thin film II; 603-Metal electrode; 604-Arc-shaped partition; 605-Dielectric sphere; 606-Cavity cover plate

[0058] 7-Metallic interdigitated electrode layer; Detailed Implementation

[0059] The various parts of the networked chain-type floating raft triboelectric nanogenerator of this invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0060] In some embodiments of this disclosure, such as Figure 1 As shown, this utility model proposes a networked chain-type floating raft triboelectric nanogenerator structure. The generator includes: a raft shell, a swinging power generation unit, a rolling power generation unit, a connection structure, and a synchronization structure. The raft shell 1 includes a four-part combined shell 101-104 and two raft shell end caps 105. The swinging power generation unit inside the shell includes two steel shafts 501, bearings 502, swing plates 503, a base plate 504, a dielectric film 505, a soft contact friction layer 4, and a metal interdigitated electrode layer 7. The rolling power generation unit includes an arc-shaped cavity 601, a dielectric film 602, an arc-shaped partition 603, a metal electrode 604, dielectric spheres 605, and a cavity cover plate 606.

[0061] In some embodiments of this disclosure, such as Figure 2 As shown, the raft shell 1 is entirely 3D printed from polylactic acid, and the modular raft shells are assembled to form the raft cavity; as... Figure 3 As shown, a bearing 502 is provided in the middle of the raft-type outer shell end cover 105. The bearing 502 is a sealed ceramic ball bearing. The steel shaft 501 passes through the bearing 502, the swing structure 5, and the rolling structure 6, fixing the bearing 502 to the raft-type outer shell end cover. The metal interdigital electrode layer 7 is fixed on the inner surface of the raft-type outer shell. The soft contact friction layer 4 is vertically fixed in the gap of the metal interdigital electrode layer 7. There is a certain distance between the metal interdigital electrode layer 7 and the base plate 504. A dielectric film 505 is attached to the bottom of the base plate 504. Charge is generated during the contact, friction, and swinging process between the base plate 504 and the soft contact friction layer 4.

[0062] In some embodiments of this disclosure, there is a gap between the base plate and the metal interdigitated electrode layer. Preferably, the gap is 0.5mm-2mm, which ensures that there is almost no resistance between the base plate layer and the metal interdigitated electrode layer when the mechanism is subjected to external excitation. There is slight friction between the base plate layer and the soft contact friction layer, which reduces wear.

[0063] In some embodiments of this disclosure, the dielectric film of the substrate layer is made of an electronegative material, and the dielectric film and the interdigitated metal electrode layer are made of materials with a large difference in electron gain and loss capacity. In order to improve the surface charge density, the soft contact friction layer is generally made of animal fur, polymer film materials such as rabbit hair, fluorinated isopropylene (FEP), polytetrafluoroethylene (PTFE), etc. Rabbit hair is preferred because it is more convenient to use and inexpensive. The metal electrode is made of copper film, aluminum film, silver film or metal film material with good conductivity. Optionally, the thickness of the metal electrode is 50nm-1mm. There is slight friction with the dielectric film of the substrate layer to reduce resistance.

[0064] In some embodiments of this disclosure, the material of the swing plate is acrylic sheet, the material of the base plate is polylactic acid, the two swing plates are fixed to the two ends of the steel shaft respectively, the bottom of the swing plate is fixed to the upper surface of the base plate, and the swing device can swing freely when the steel shaft rotates.

[0065] In some embodiments of this disclosure, the arrangement of the pendulum plates in the oscillating structure is such that the pendulum plates on the same steel shaft form a group of pendulum plates on the same straight line, and the lower part of the pendulum plate group is fixed to the bottom plate layer; a counterweight block is fixed on the bottom plate layer of the oscillating structure, or the upper part of the pendulum plates is hollowed out to form a weight difference and the total weight below the pendulum plates is greater than the total weight of the upper pendulum plates; the number of pendulum plates is N=4, which can reserve space for the rolling structure.

[0066] In some embodiments of this disclosure, in order for the swing mechanism to swing normally and regularly, the center of gravity of the swing structure can be lowered, the upper part of the swing plate can be hollowed out to reduce the upper mass, or a counterweight can be installed on the upper part of the base plate. Under the action of external excitation, the swing mechanism swings, and the dielectric film of the base plate layer and the soft contact friction layer rub against each other to generate charge. After repeated friction, the surface charge reaches saturation. Then, due to electrostatic induction, induced charge is generated between the base plate layer and the metal interdigital electrode layer. During the continued swinging process, a potential difference is formed, thereby generating current.

[0067] In some embodiments of this disclosure, such as Figure 4 As shown, the rolling power generation unit includes an arc-shaped cavity 601, dielectric microspheres 605, and arc-shaped partitions 604. The bottom surface of the arc-shaped cavity 601 has an arc-shaped structure with grooves on the inner side, which can fix the partitions in the grooves. The cavity is fixed on a steel shaft. A metal electrode layer 603 is attached to the lower part of the dielectric film 602 and connected to an external circuit by wires. The metal electrodes are attached to the upper surface of each arc-shaped partition. The dielectric microspheres 605 are placed on the dielectric film 602. The arc-shaped cavity 601 has arc-shaped partitions on the top and bottom to separate several dielectric microspheres 605. A cavity cover plate 606 forms a closed arc-shaped cavity to prevent the dielectric microspheres 605 from falling out. The triboelectric nano-power generation unit is located inside the raft-type outer shell and inside the arc-shaped cavity.

[0068] In some embodiments of this disclosure, the arc-shaped cavity and arc-shaped partition are 3D printed and made of polylactic acid. The dielectric film is a polymer material or a semiconductor material with a high dielectric constant. The dielectric sphere 4 is a polymer sphere with a diameter of 4 mm to 10 mm. The polymer sphere can be made of polytetrafluoroethylene (PTFE) or the like. The surface of the dielectric sphere is polished.

[0069] In some embodiments of this disclosure, the cavity cover is made of acrylic sheet and is fixed to the arc-shaped cavity to prevent the dielectric ball from falling out during rolling. The rolling structure is fixed on the steel shaft and is evenly distributed between the two swing plates. During the swinging process, the dielectric ball rolls freely in the arc-shaped cavity.

[0070] In some embodiments of this disclosure, such as Figure 5 As shown in Figure 6, Figure 5 The connecting structure 2 is used for connecting the raft shells to each other, including a U-shaped plate 201, a connecting bearing 203, a chain plate 202, and a chain plate end cap 204; the raft body has U-shaped plates 201 on both sides of the connecting part, and a circular boss 205 is provided on the outside of the plate, which cooperates with the connecting bearing 203 and is connected by the chain plate 202, so that the raft bodies can swing freely. Figure 6 Synchronous structure 3 is located on the outside of the raft shell and at the end of the steel shaft, including shaft end ring 301, shaft end cap 302, and swing rod 303.

[0071] In some embodiments of this disclosure, the connection structure is a chain-like connection that can connect different raft shells to each other; the outer sides of the raft body have U-shaped plates, and the outer side of the U-shaped plates has circular bosses that cooperate with bearings. The raft bodies can swing freely through the chain plate connection, converting low-frequency wave energy into swing energy; optionally, the U-shaped plates, chain plates, and chain plate end caps are all made of polylactic acid.

[0072] In some embodiments of this disclosure, a synchronization structure is located outside the raft housing to prevent the two swinging structures from colliding and affecting output efficiency. It includes a shaft-end ring, a shaft-end cap, and a swing rod. The shaft-end ring is fixed to the housing end cap, and the shaft-end cap is fixed to the shaft end. The swing rod has three bosses, with the two side bosses of equal height and the middle boss being higher. The two side bosses are fixed to the end cap. A semi-circular annular groove is provided on the outside of the raft housing, and the middle boss cooperates with the groove. Optionally, the shaft-end ring, shaft-end cap, and swing rod are all made of polylactic acid.

[0073] In practical applications, the materials for the different components in the above structures can be appropriately varied and modified, and are not limited to the materials and size ranges listed in this embodiment.

[0074] In some embodiments of this disclosure, the networked chain floating raft triboelectric nanogenerator, under the excitation of low-frequency wave energy, transforms irregular mechanical excitation into regular oscillating energy, increases the area of ​​the power generation unit, prolongs the friction time, and improves the power generation output efficiency. It has high stability, high durability, high flexibility, and high reliability, and has broad application prospects.

[0075] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A networked chain-type floating raft triboelectric nanogenerator, characterized in that, include: A raft-type housing (1) and a triboelectric nano-power generation unit disposed therein, the triboelectric nano-power generation unit including a swinging power generation device unit and a rolling power generation device unit; also including a connecting structure (2) and a synchronization structure (3); the raft-type housing (1) includes 4 combined raft-type housings (101-104) and 2 raft-type housing end caps (105), which are combined into a closed housing; the swinging power generation device unit includes a swinging structure (5) located inside the raft-type housing, including: a steel shaft (501), a swing plate (503), a bearing (502), a base plate (504), a metal interdigitated electrode layer (7), a soft contact friction layer (4), and a dielectric film (505); the raft-type housing end caps (105) are provided with shafts on both sides. The rolling power generation unit includes a rolling structure (6) and a steel shaft (501); the rolling structure (6) includes an arc-shaped cavity (601), a dielectric ball (605), a dielectric film (602), and an arc-shaped partition (604); the connecting structure (2) is located outside the shell and connects the two raft shells, including a U-shaped plate (201), a connecting bearing (203), a chain plate (202), and a chain plate end cap (204); the synchronization structure (3) is located outside the raft shell and includes a shaft end ring (301), a shaft end cap (302), and a swing rod (303); the swing power generation unit is located inside the raft shell, the shell of the rolling structure forms an arc-shaped cavity, and the dielectric ball is located inside the arc-shaped cavity.

2. The networked chain-type floating raft triboelectric nanogenerator according to claim 1, characterized in that, The steel shaft (501) in the swing power generation unit passes through the bearing (502) and the raft shell end cap (105); the swing plate (503) is fixed on the steel shaft (501), wherein the weight distribution of the upper and lower parts of the swing structure (5) is uneven; the metal interdigitated electrode layer (7) is located on the inner surface of the raft shell (1); a soft contact friction layer (4) is attached in the gap of the metal interdigitated electrode layer (7); there is a certain distance between the metal interdigitated electrode layer (7) and the base plate (504), and a dielectric film (505) is attached below the base plate (504). The dielectric film (505) and the soft contact friction layer (4) come into contact with each other during the swing to generate triboelectricity.

3. The networked chain-type floating raft triboelectric nanogenerator according to claim 1, characterized in that, The arc-shaped cavity (601) in the rolling structure is a multi-layer arc-shaped structure, which is fixed on the steel shaft; the dielectric film II (602) has a metal electrode (603) attached to it and connected to the external circuit by a wire, and the metal electrode (603) is attached to the upper surface of each arc-shaped partition (604); the arc-shaped cavity (601) has arc-shaped partitions (604) inside, which separate a number of dielectric balls (605), and the dielectric balls (605) are placed on the dielectric film II (602).

4. The networked chain-type floating raft triboelectric nanogenerator according to claim 1, characterized in that, The bottom plate (504) of the swing power generation device unit has a metal electrode or metal interdigitated electrode on its lower surface, and a dielectric film (505) is attached to the metal electrode or metal interdigitated electrode.

5. A networked chain-type floating raft triboelectric nanogenerator according to claim 1, characterized in that, The raft shell (1) and the base plate (504) are both made of polylactic acid, and the dielectric film (505) is made of polymer dielectric material; the thickness of the metal interdigitated electrode layer (7) is between 50 nm and 1 mm; the gap between the base plate (504) and the metal interdigitated electrode layer (7) is between 0.5 mm and 2 mm.

6. A networked chain-type floating raft triboelectric nanogenerator according to claim 1, characterized in that, Also includes: The soft contact friction layer (4) is located within the range that the swinging structure can contact during the swinging process. Compared with the material of the base plate layer, the electronegativity is much different. One end of it is attached to the gap of the metal interdigitated electrode layer (7) on the inner wall of the shell, and the other end can move freely. The material of the soft contact friction layer (4) is one or more of the following materials: animal fur polymer film material.

7. A networked chain-type floating raft triboelectric nanogenerator according to claim 1, characterized in that, The swing structure (5) includes a steel shaft (501), a bearing (502), a swing plate (503), and a base plate (504). The swing plate (503) is set to four pieces and fixed on the steel shaft (501). The swing plates (503) on the same steel shaft (501) are located on the same straight line to form a set of swing plates. Two swing plates are set on each steel shaft (501), and the two sets of swing plates are arranged parallel to each other. The swing plate (503) is fixedly connected to the base plate (504). The material of the swing plate (503) is acrylic sheet.

8. A networked chain-type floating raft triboelectric nanogenerator according to claim 1, characterized in that, The pendulum pieces (503) have equal mass, and the swing structure (5) can be configured with one or more of the following structures: a counterweight is fixed on the base plate (504) of the swing structure, or the upper part of the pendulum piece is hollowed out to form a weight difference and the total weight below the pendulum piece (503) is greater than the total weight of the upper part of the pendulum piece.

9. A networked chain-type floating raft triboelectric nanogenerator according to claim 1, characterized in that: The structure of the rolling power generation device unit is one or more of the following structures: the upper surface of the arc-shaped partition (604) is equipped with a metal electrode (603) or a metal interdigitated electrode with a thickness of 50nm-1mm; three triboelectric nanogenerator units are arranged vertically inside the arc-shaped cavity (601); the dielectric film II (602) is a polymer material or a semiconductor material with a high dielectric constant; the dielectric microspheres (605) in the arc-shaped cavity (601) are made of a high molecular polymer with a diameter between 4mm and 10mm; and the surface of the dielectric microspheres (605) is sanded.

10. A networked chain-type floating raft triboelectric nanogenerator according to claim 1, characterized in that, Also includes: The connecting structure (2) connects different raft shells (1) to each other; the two sides of the connection point on the outside of the raft body have U-shaped plates (201), and the outside of the plate has a circular boss (205), which cooperates with the connecting bearing (203) and is connected by the chain plate (202) so that the raft bodies can swing freely. The U-shaped plate (201), the chain plate (202), and the chain plate end cap (204) are all made of polylactic acid.

11. A networked chain-type floating raft triboelectric nanogenerator according to claim 1, characterized in that, Also includes: Synchronous structure (3) is located on the outside of the raft shell and at the end of the steel shaft (501), including shaft end ring (301), shaft end cap (302), and swing rod (303); shaft end ring (301) is fixed on the shell end cap, and shaft end cap (302) is fixed on the shaft end; the two sides of the swing rod (303) are fixed to the shaft end cap (302), the outer side of the raft shell (1) is provided with a plate annular groove, and the middle boss cooperates with the groove. The shaft end ring (301), shaft end cap (302), and swing rod (303) are all made of polylactic acid.

12. An energy harvester, characterized in that, A networked chain floating raft triboelectric nanogenerator comprising any one of claims 1 to 11; This energy collector is a wave energy collector.

Images