Modularized high-output TENG self-powered equipment

Abstract

The invention relates to modular high-output TENG self-powered equipment, which comprises an energy capture device and a power generation device, and is characterized in that the power generation device comprises an upper shell, a lower shell, a driving device, a main shaft, a TENG power generation unit and a lower cover; a circular through hole is formed in the upper end of the upper shell, an inner wheel is arranged in the upper shell and is of a stepped cylindrical structure, the small-diameter end of the inner wheel is of a circular ring-shaped structure, and the large-diameter end of the inner wheel is of an inner gear structure; the small-diameter end of the inner wheel is rotationally connected with the upper shell through a bearing, and the small-diameter end of the inner wheel penetrates out of the upper shell; the TENG power generation units are arranged in the lower shell, the number of the TENG power generation units is three, the three TENG power generation units are each provided with a rectifying circuit, and the three TENG power generation units are connected in parallel; the upper shell is fixedly connected with the lower shell, and the lower shell is fixedly connected with the lower cover. According to the invention, a modular design is adopted, the device can adapt to various actual environments, the crest factor is optimized, the current output is improved, and the TENG can be applied to various scenes.

Description

Technical Field

[0001] The present invention relates to the field of friction nano power generation technology, and in particular to a modular high-output TENG self-powered device. Background Art

[0002] Triboelectric Nanogenerator (TENG) is a device that converts various forms of mechanical energy into electrical energy based on the principle of electrostatic induction. When two materials come into contact with each other, the charge is transferred from the surface of the material with relatively weak electronegativity to the surface of the material with strong electronegativity according to the triboelectric effect, thereby forming an electric field. The charge in the external circuit flows in a directional manner in order to achieve a new electrostatic balance, thereby generating an electrical signal. Therefore, in the continuous contact and separation process, the external circuit generates an AC signal. TENG has the advantages of high peak power density and light weight, and can convert low-frequency mechanical energy into electrical energy.

[0003] TENG can not only drive small electronic devices, but also be used to stimulate electrochemical processes, such as a high-energy-efficiency triboelectric nanogenerator-driven full water splitting system and method disclosed in CN116926589A, which realizes driving the full water splitting system to produce hydrogen at the cathode and oxygen at the anode. For example, a spherical origami-structured triboelectric nanogenerator (Q-TENG) disclosed in CN117254711A collects water wave energy to build a self-powered catalytic degradation system for the removal of methylene blue (MB) from dye wastewater. However, the existing TENG still has the problems of low output capacity and poor adaptability in application, which makes TENG unable to be widely used in electrochemical systems. Summary of the invention

[0004] In order to solve the problems of low output capacity and poor adaptability of existing TENGs that cannot be widely used in electrochemical systems, the present invention proposes a modular high-output TENG self-powered device, which adopts a modular design, can adapt to various practical environments, optimizes the crest factor and improves the current output, so that TENG can be applied to a variety of scenarios.

[0005] In order to achieve the above-mentioned purpose, the present invention proposes a modular high-output TENG self-powered device, including an energy capture device and a power generation device, wherein the power generation device includes an upper shell, a lower shell, a driving device, a main shaft, a TENG power generation unit and a lower cover; The upper shell and the lower shell are both cylindrical structures with an open lower end and a hollow interior. A circular through hole is opened at the upper end of the upper shell. An inner wheel is arranged in the upper shell. The inner wheel is a stepped cylindrical structure. The small diameter end of the inner wheel is a circular ring structure, and the large diameter end of the inner wheel is an internal gear structure. The small diameter end of the inner wheel is rotatably connected to the upper shell through a bearing, and the small diameter end of the inner wheel passes through the upper shell. The driving device includes a sun gear, which is fixed to the main shaft, and the main shaft passes through the lower housing and is rotatably connected to the lower housing; The TENG power generation unit is arranged in the lower shell, and the TENG power generation unit includes an upper support plate, a copper electrode, a FEP film, a fur layer and a lower support plate. The upper support plate is fixed to the lower shell, and the copper electrode is fixed to the upper support plate and the FEP film to form a stator. The copper electrode is connected to a forked electrode. The stator is provided with a through hole, and the main shaft passes through the through hole and is fixedly connected to the lower support plate. The upper end surface of the lower support plate is fixedly provided with a fur layer to form a rotor. The fur layer is in contact with the FEP film, and the fur layer includes a plurality of fan-shaped fur pads, and the plurality of fan-shaped fur pads are arranged in a circumferentially equidistant array. The main shaft passes through the lower support plate and is rotatably connected to the lower cover through a bearing; The number of TENG power generation units is three, and each of the three TENG power generation units is provided with a rectifier circuit, and the three TENG power generation units are connected in parallel; The upper shell and the lower shell are fixedly connected, and the lower shell and the lower cover are fixedly connected.

[0006] Furthermore, the fan-shaped fur pad is a fan-shaped thin sheet structure made of rabbit hair material.

[0007] The electronegativity of rabbit hair is weaker than that of FEP film, which enables electron transfer. In addition, rabbit hair has good stability, allowing the equipment to be used for a long time.

[0008] Furthermore, the driving device also includes multiple planetary gears, multiple rotating shafts and a gear rack. The gear rack is fixed to the small diameter end of the inner wheel, and multiple rotating shafts are equidistantly arranged on the circumference of the gear rack. The rotating shafts and the gear rack are rotatably connected, and planetary gears are fixed on the rotating shafts. The multiple planetary gears are respectively meshed with the large diameter end of the inner wheel. The sun gear is located at the center of the gear rack, and the sun gear is respectively meshed with the multiple planetary gears.

[0009] A driving device is provided to improve the collection effect of the energy capture device, and a planetary gear is provided to increase the speed of the solar gear and increase the rotation rate, thereby increasing the output charge of the TENG power generation unit.

[0010] Furthermore, a plurality of mounting grooves are provided in a circumferential array of the lower shell body, and a plurality of mounting ears are provided on the circumference of the upper support plate corresponding to the mounting grooves. The mounting ears are embedded in the mounting grooves, and the mounting ears are fixed to the mounting grooves by screws.

[0011] Mounting grooves and mounting ears are provided to facilitate the fixation of the upper support plate in the stator and improve the operating stability of the TENG power generation unit.

[0012] Furthermore, the main shaft is a cylindrical structure, the upper end of the main shaft passes through the upper shell, and the upper end surface of the main shaft is provided with a columnar slot.

[0013] Furthermore, the energy capture device includes a crank, one side of which is provided with a columnar protrusion, and the crank is plugged with the main shaft through the columnar protrusion; The crank is used to collect mechanical energy.

[0014] Further, the energy capture device comprises a wind wheel, the wind wheel comprises a plurality of blades and a bracket, the blades are streamlined, the bracket comprises a main arm and a plurality of connecting arms, one side of the plurality of connecting arms is fixed to the main arm, and the other side is detachably connected to the blades; The main arm is a columnar structure, and a columnar protrusion is provided at the bottom of the main arm, and the main arm is plugged into the main shaft through the columnar protrusion; The wind wheel is used to collect wind energy.

[0015] Furthermore, the energy capture device includes a water wheel, which includes a hub, a connecting column and a plurality of side plates, the plurality of side plates are fixed to the hub, one side of the hub is fixedly connected to the connecting column, the connecting column is a columnar structure, a columnar protrusion is provided on the other side of the connecting column, and the connecting column is connected to the main shaft through the columnar protrusion.

[0016] Water wheels are used to collect water energy.

[0017] Through the above technical solution, the beneficial effects of the present invention are: 1 The present invention adopts a modular design, and is provided with an upper shell, a lower shell and a lower cover. After assembly, it is a cylindrical structure, and the small diameter end of the inner wheel protrudes from the upper shell to connect the energy capture device. The power generation device of the present invention adopts a modular design, wherein the driving device includes a planetary gear, which can be replaced, and the number of TENG power generation units can be adjusted. The overall structure of the device of the present invention is simple, convenient to disassemble and carry, and convenient to integrate the electrochemical system.

[0018] 2 The present invention has high output characteristics and can provide stable and continuous output electrical energy. A driving device is provided, and the driving device optimizes the transmission ratio, thereby increasing the rotor speed and increasing the output charge. In addition, the present invention sets three TENG power generation units, and the three independent layer mode TENG power generation units are connected in parallel through a rectifier circuit, which effectively reduces the crest factor and improves the current output. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a modular high-output TENG self-powered device of the present invention.

[0020] Figure 2 This is a structural schematic diagram of a TENG power generation unit of a modular high-output TENG self-powered device of the present invention.

[0021] Figure 3This is a schematic structural diagram of a driving device of a modular high-output TENG self-powered device of the present invention.

[0022] Figure 4 This is one of the structural schematic diagrams of the energy capture device of a modular high-output TENG self-powered device of the present invention.

[0023] Figure 5 This is the second structural schematic diagram of the energy capture device of a modular high-output TENG self-powered device of the present invention.

[0024] Figure 6 This is the third structural schematic diagram of the energy capture device of a modular high-output TENG self-powered device of the present invention.

[0025] Figure 7 This is a rectifier circuit diagram of a modular high-output TENG self-powered device of the present invention.

[0026] Figure 8 This is a schematic diagram of the operating principle of a TENG power generation unit of a modular high-output TENG self-powered device of the present invention.

[0027] Fig. 9 Graph showing the current output and crest factor in Embodiment 2 of the present invention; Fig.10 In Example 3 of the present invention V OC Comparison chart; Fig.11 This is a comparison diagram of the experiment in Example 4 of the present invention; Fig.12 Schematic diagram of the orientation process of BMN in an electric field in Example 5 of the present invention; Fig.13 This is an optical microscopic image of the BMNP slice in Example 5 of the present invention.

[0028] Fig.14 This is a schematic diagram of the installation slot and mounting ears of a modular high-output TENG self-powered device of the present invention.

[0029] Figure numbers: upper shell 1, lower shell 2, driving device 3, main shaft 4, TENG power generation unit 5, lower cover 6, inner wheel 7, mounting groove 8, mounting ear 9, crank 10, blade 11, bracket 12, hub 13, connecting column 14, side plate 15, sun gear 301, planetary gear 302, rotating shaft 303, gear rack 304, upper support plate 501, copper electrode 502, FEP film 503, fur layer 504, lower support plate 505. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: Example 1 like Figures 1 to 7 As shown in 14, a modular high-output TENG self-powered device includes an energy capture device and a power generation device, wherein the power generation device includes an upper shell 1, a lower shell 2, a driving device 3, a main shaft 4, a TENG power generation unit 5 and a lower cover 6; The upper shell 1 and the lower shell 2 are both cylindrical structures with an open lower end and a hollow interior. A circular through hole is opened at the upper end of the upper shell 1. An inner wheel 7 is arranged in the upper shell 1. The inner wheel 7 is a stepped cylindrical structure. The small diameter end of the inner wheel 7 is a circular ring structure, and the large diameter end of the inner wheel 7 is an internal gear structure. The small diameter end of the inner wheel 7 is rotatably connected to the upper shell 1 through a bearing, and the small diameter end of the inner wheel 7 passes through the upper shell 1. The driving device 3 includes a sun gear 301, and the sun gear 301 is fixed to the main shaft 4. The main shaft 4 passes through the lower housing 2 and is rotatably connected to the lower housing 2. The TENG power generation unit 5 is arranged in the lower shell 2, and the TENG power generation unit 5 includes an upper support plate 501, a copper electrode 502, a FEP film 503, a fur layer 504 and a lower support plate 505. The upper support plate 501 is fixed to the lower shell 2, and the copper electrode 502 is respectively fixed to the upper support plate 501 and the FEP film 503 to form a stator. The copper electrode 502 is connected with a forked electrode. The stator is provided with a through hole, and the main shaft 4 passes through the through hole and is fixedly connected to the lower support plate 505. The upper end surface of the lower support plate 505 is fixedly provided with a fur layer 504 to form a rotor. The fur layer 504 is in contact with the FEP film 503, and the fur layer 504 includes a plurality of fan-shaped fur pads, and the plurality of fan-shaped fur pads are in a circumferentially equidistant array. The main shaft 4 passes through the lower support plate 505 and is rotatably connected to the lower cover 6 through a bearing; The number of TENG power generation units 5 is three, and the three TENG power generation units 5 are all provided with a rectifier circuit 8, and the three TENG power generation units 5 are connected in parallel; The upper shell 1 and the lower shell 2 are fixedly connected, and the lower shell 2 and the lower cover 6 are fixedly connected.

[0031] The fan-shaped fur pad is a fan-shaped thin sheet structure made of rabbit hair material.

[0032] like Figure 3 As shown, the driving device 3 also includes a plurality of planetary gears 302, a plurality of rotating shafts 303 and a gear frame 304. The gear frame 304 is fixed to the small diameter end of the inner wheel 7. A plurality of rotating shafts 303 are equidistantly arranged on the circumference of the gear frame 304. The rotating shafts 303 and the gear frame 304 are rotatably connected. The planetary gears 302 are fixed on the rotating shafts 303. The plurality of planetary gears 302 are respectively meshed with the large diameter end of the inner wheel 7. The sun gear 301 is located at the center of the gear frame 304. The sun gear 301 is respectively meshed with the plurality of planetary gears 302.

[0033] The lower shell 2 is provided with a plurality of mounting grooves 8 in a circumferential array, and the upper support plate 501 is provided with a plurality of mounting ears 9 in a circumferential array corresponding to the mounting grooves 8. The mounting ears 9 are embedded in the mounting grooves 8 and fixed to the mounting grooves 8 by screws.

[0034] The upper end surface of the small diameter end of the inner wheel 7 is provided with a columnar slot.

[0035] like Figure 4 As shown, the energy capture device includes a crank 10, one side of which is provided with a columnar protrusion, and the crank 10 is plugged with the small diameter end of the inner wheel 7 through the columnar protrusion; The crank 10 is used to collect mechanical energy.

[0036] like Figure 5 As shown, the energy capture device includes a wind wheel, the wind wheel includes a plurality of blades 11 and a bracket 12, the blades 11 are streamlined, the bracket 12 includes a main arm and a plurality of connecting arms, one side of the plurality of connecting arms is fixed to the main arm, and the other side is detachably connected to the blades 11; The main arm is a columnar structure, and a columnar protrusion is provided at the bottom of the main arm, and the main arm is plugged with the small diameter end of the inner wheel 7 through the columnar protrusion; The wind wheel is used to collect wind energy.

[0037] like Figure 6 As shown, the energy capture device includes a water wheel, which includes a hub 13, a connecting column 14 and a plurality of side plates 15. The plurality of side plates 15 are fixed to the hub 13. One side of the hub 13 is fixedly connected to the connecting column 14. The connecting column 14 is a columnar structure. A columnar protrusion is provided on the other side of the connecting column 14. The connecting column 14 is plugged into the small diameter end of the inner wheel 7 through the columnar protrusion.

[0038] Water wheels are used to collect water energy.

[0039] In this embodiment, a modular high-output TENG self-powered device is proposed. When the upper shell 1, the lower shell 2 and the lower cover 6 are fixed, the main body is a packaged cylinder with a diameter of 180 mm and a height of 110 mm. The driving device 3 is a planetary gear set. The number of planetary gears 302 is three, and the transmission ratio is 1:16. The upper shell 1, the lower shell 2, the driving device 3, the main shaft 4, the lower cover 6, the inner wheel 7, the upper support plate 501, the lower support plate 505 and the mounting ear 9 are made by 3D printing (PLA material) and laser cutting (acrylic). The copper electrode 502 has a diameter of 160 mm and is made of copper clad laminate and PCB technology. The number of grids of the copper electrode 502 is 4, the thickness of the FEP film 503 is 30 μm, and the fur layer 504 is made of rabbit hair. The actual measurement of the latter modular high-output TENG self-powered device V OCis 575V, I SC is 44.7 μA, Q SC is 400 nC.

[0040] like Figure 8 During the operation shown, the crank 10, wind wheel or water wheel is selected as the energy capture device according to the actual scenario. The energy capture device drives the inner wheel 7 to rotate, and the large diameter end of the inner wheel 7 drives the planetary wheel 302 to rotate, and then the planetary wheel 302 drives the sun wheel 301 to rotate, and the sun wheel 301 is fixedly connected to the main shaft 4, and the main shaft 4 drives the rotors of the three TENG power generation units 5 to rotate.

[0041] Since the electronegativity of the FEP film 503 is stronger than that of the fur layer 504 (rabbit hair), the electrons on the surface of the rabbit hair will be transferred to the FEP film 503 according to the triboelectric effect. Negative charges gradually accumulate on the surface of the FEP film 503, while the surface of the rabbit hair has an equal amount of positive charges ( Figure 8 a) Since the charges are in a balanced state, no electrons flow between electrodes 1 and 2 of copper electrode 502. When the rotor rotates to the right ( Figure 8 b), free electrons will flow from electrode 1 to electrode 2 of copper electrode 502 through the external circuit, generating transient current. The rotor continues to rotate to the right until the rabbit hair completely overlaps with one electrode of copper electrode 502, and electrostatic equilibrium is achieved again ( Figure 8 c). When the rabbit hair turns to the right, the electrostatic balance will be broken again ( Figure 8 d), causing electrons to transfer from electrode 2 of copper electrode 502 to electrode 1 through an external circuit to balance the potential, thereby generating a reverse pulse current. Finally, when the rotor returns to the original state, the TENG power generation unit 5 completes a complete working cycle ( Figure 8 a). At this point, the entire work cycle is completed, and the distribution of surface friction charges returns to the initial state. Therefore, when the rabbit hair keeps rotating, the TENG power generation unit 5 can continuously output AC power.

[0042] Example 2 In combination with a modular high-output TENG self-powered device in Example 1, in this embodiment, the three TENG power generation units 5 are connected in parallel through a rectifier circuit, which can effectively reduce the crest factor and improve the current output. The current crest factor is one of the important indicators to measure performance, just like the effective value. A large current crest factor will not only cause loss and adverse effects on the device itself, but also cause the generated current waveform to be distorted.

[0043] The two cases of one-layer TENG power generation unit 5 and three-layer TENG power generation unit 5 are discussed as follows Fig. 9 As shown, the rectifier circuit diagram is shown in Figure 7.

[0044] The AC signal generated by multiple simple parallel connections (M-TENG) with traditional circuit mode increases with the increase of rotation speed. A full-wave rectifier is added to each TENG power generation unit 5 and then connected in parallel. It can be clearly seen that the three-layer TENG power generation unit 5 I SC The current of a single-layer TENG power generation unit 5 is 11.4 μA, while the current of a single-layer TENG power generation unit 5 is only 7.4 μA, and the crest factor is reduced from 2.18 to 1.85. The structure of the three-layer TENG power generation unit 5 effectively solves the problems of unnecessary power loss and high peak factor when the traditional TENG is in parallel.

[0045] Example 3 Combined with a modular high-output TENG self-powered device in Example 1, this embodiment proves that the present invention can provide stable and continuous electric energy: The rotation speed of TENG power generation unit 5 was set at 300 rpm. V OC like Fig.10 shown.

[0046] from Fig.10 It can be seen V OC It remained basically unchanged after 2 months, which shows that the flexible contact between the rabbit hair and the FEP film 503 can maintain the stability of the surface friction charge for a long time, so the present invention can provide stable and continuous electrical energy.

[0047] Example 4 A modular high-output TENG self-powered device according to Example 1 was used for rust protection. The present invention was used as a sustainable power source to conduct rust prevention experiments on iron nails at room temperature.

[0048] In order to prove that the present invention can be used for electrochemical rust prevention, a group of experiments without rust prevention protection is added for comparison.

[0049] like Fig.11 As shown, when the iron nail is immersed in a NaCl aqueous solution (0.1 m mol / L) without being connected to the device of the present invention, the iron nail is severely corroded after 24 hours.

[0050] like Fig.11 As shown, when the iron nail is connected to the device of the present invention, the transferred electrons are injected into the iron nail, thereby effectively inhibiting metal corrosion. The iron nail is almost not corroded. This shows that the present invention has great potential in electrochemical rust prevention.

[0051] Example 5 The device of the present invention has high voltage and low current output characteristics. A modular high output TENG self-powered device of Example 1 is used for dielectrophoresis.

[0052] The experimental object is to prepare a composite membrane (BMNP) mixed with 20% BaTiO3-Mg-Nb (BMN) and polydimethylsiloxane (PDMS). Fig.12 As shown in the figure, in this process, the BMNs are arranged along the direction of the electric field and then form chains. This can be explained by the principle of dielectrophoresis. First, the two ends of the BMN will induce opposite charges in the electric field between the parallel plate electrodes. Under the action of the electric field force, the BMNs rotate along the direction of the electric field ( Fig.12 a). At the same time, due to their opposite charges, the BMNs attract each other along their length, forming a chain along the direction of the electric field ( Fig.12 b). The chains will repel each other due to the repulsive force of charges ( Fig.12 c). Finally, the chains maintain equal distances to reach a state of equilibrium ( Fig.12 d).

[0053] The BMNPs were sliced ​​before and after dielectrophoresis, and the optical microscopic images were as follows: Fig.13 As shown. The viewing direction is perpendicular to the direction of the electric field. It can be seen that the BMNs in the original state are randomly arranged ( Fig.13 a), while BMN after dielectrophoresis ( Fig.13 b) They are well arranged along the direction of the electric field to form chains. Therefore, the present invention can be applied to dielectrophoresis, using the migration of charged particles in a non-uniform electric field for separation, and can be applied to the fields of microfluidic chips, biosensors, etc.

[0054] The embodiments described are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A modular high-output TENG self-powered device, characterized in that: It comprises an energy capture device and a power generation device, wherein the power generation device comprises an upper shell (1), a lower shell (2), a driving device (3), a main shaft (4), a TENG power generation unit (5) and a lower cover (6); The upper shell (1) and the lower shell (2) are both columnar structures with an open lower end and a hollow interior. A circular through hole is provided at the upper end of the upper shell (1). An inner wheel (7) is arranged inside the upper shell (1). The inner wheel (7) is a stepped cylindrical structure. The small diameter end of the inner wheel (7) is a circular ring structure, and the large diameter end of the inner wheel (7) is an internal gear structure. The small diameter end of the inner wheel (7) is rotatably connected to the upper shell (1) via a bearing, and the small diameter end of the inner wheel (7) passes through the upper shell (1). The driving device (3) comprises a sun gear (301), wherein the sun gear (301) is fixed to the main shaft (4), and the main shaft (4) passes through the lower housing (2) and is rotationally connected to the lower housing (2); The TENG power generation unit (5) is arranged in the lower housing (2), and the TENG power generation unit (5) comprises an upper support plate (501), a copper electrode (502), an FEP film (503), a fur layer (504) and a lower support plate (505), wherein the upper support plate (501) is fixed to the lower housing (2), the copper electrode (502) is respectively fixed to the upper support plate (501) and the FEP film (503) to form a stator, and the copper electrode (502) is connected to an interdigital electrode. The stator is provided with a through hole, the main shaft (4) passes through the through hole and is fixedly connected to the lower support plate (505), the upper end surface of the lower support plate (505) is fixedly provided with a fur layer (504) to form a rotor, the fur layer (504) is in contact with the FEP film (503), the fur layer (504) includes a plurality of fan-shaped fur pads, and the plurality of fan-shaped fur pads are arranged in a circumferentially equidistant array, the main shaft (4) passes through the lower support plate (505) and is rotatably connected to the lower cover (6) via a bearing; The number of TENG power generation units (5) is three, each of the three TENG power generation units (5) is provided with a rectifier circuit (8), and the three TENG power generation units (5) are connected in parallel; The upper shell (1) and the lower shell (2) are fixedly connected, and the lower shell (2) and the lower cover (6) are fixedly connected.

2. A modular high-output TENG self-powered device according to claim 1, characterized in that: The fan-shaped fur pad is a fan-shaped thin sheet structure made of rabbit hair material.

3. A modular high-output TENG self-powered device according to claim 1, characterized in that: The driving device (3) further comprises a plurality of planetary gears (302), a plurality of rotating shafts (303) and a gear frame (304); the gear frame (304) is fixed to the small-diameter end of the inner wheel (7); a plurality of rotating shafts (303) are equidistantly arranged on the circumference of the gear frame (304); the rotating shafts (303) and the gear frame (304) are rotatably connected; the planetary gears (302) are fixedly arranged on the rotating shafts (303); the plurality of planetary gears (302) are respectively meshed with the large-diameter end of the inner wheel (7); the sun gear (301) is located at the center of the gear frame (304); the sun gear (301) is respectively meshed with the plurality of planetary gears (302).

4. A modular high-output TENG self-powered device according to claim 1, characterized in that: The lower shell (2) is provided with a plurality of mounting grooves (8) in a circumferential array, and the upper support plate (501) is provided with a plurality of mounting ears (9) in a circumferential array corresponding to the mounting grooves (8), the mounting ears (9) being embedded in the mounting grooves (8), and the mounting ears (9) being fixed to the mounting grooves (8) by screws.

5. A modular high-output TENG self-powered device according to claim 1, characterized in that: The upper end surface of the small diameter end of the inner wheel (7) is provided with a columnar slot.

6. A modular high-output TENG self-powered device according to claim 5, characterized in that: The energy capture device comprises a crank (10), one side of the crank (10) being provided with a columnar protrusion, and the crank (10) being plugged into the small-diameter end of the inner wheel (7) via the columnar protrusion; The crank (10) is used to collect mechanical energy.

7. A modular high-output TENG self-powered device according to claim 5, characterized in that: The energy capture device comprises a wind wheel, the wind wheel comprises a plurality of blades (11) and a bracket (12), the blades (11) are streamlined, the bracket (12) comprises a main arm and a plurality of connecting arms, one side of the plurality of connecting arms is fixed to the main arm, and the other side is detachably connected to the blades (11); The main arm is a columnar structure, a columnar protrusion is provided at the bottom of the main arm, and the main arm is plugged into the small-diameter end of the inner wheel (7) via the columnar protrusion; The wind wheel is used to collect wind energy.

8. The modular high-output TENG self-powered device according to claim 5, characterized in that: The energy capture device comprises a water wheel, the water wheel comprising a hub (13), a connecting column (14) and a plurality of side plates (15), the plurality of side plates (15) being fixed to the hub (13), one side of the hub (13) being fixedly connected to the connecting column (14), the connecting column (14) being a columnar structure, the other side of the connecting column (14) being provided with a columnar protrusion, the connecting column (14) being plugged into the small-diameter end of the inner wheel (7) via the columnar protrusion; The water wheel is used to collect water energy.

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