Nanogenerator system and application thereof

Abstract

The application relates to a nano power generation system and application thereof. The power generation system comprises a plurality of nano power generators and a chiral connecting component. The nano power generator comprises a sleeve, a one-way rotating mechanism and a power generation mechanism. The chiral connecting component connects two adjacent sleeves to realize networking. Under the excitation of fluctuation, torque is applied to the sleeve to make the sleeve swing back and forth. The one-way rotating mechanism comprises an inertia wheel and a central shaft. The power generation mechanism comprises a plurality of friction nano power generation components composed of a rotor unit and a stator unit, which realize the conversion of mechanical energy into electric energy. The rotor unit is fixedly connected with the inertia wheel through the central shaft, and the stator unit is fixedly connected with the sleeve. The central shaft only allows the one-way motion of the rotor relative to the stator, and converts the reciprocating swing of the sleeve into one-way rotation. The inertia wheel can store excitation energy, prolong the duration of one-way rotation and superimpose the effects of multiple excitations. The power generation system can convert random low-frequency short-time wave excitation into continuous rotation of the rotor which is continuously enhanced, thereby improving the power generation performance.

Description

Technical Field

[0001] This invention relates to the field of nano-power generation technology, and in particular to a nano-power generation system and its applications. Background Technology

[0002] In 2012, Academician Wang Zhonglin proposed triboelectric nanogenerator technology. Its basic principle is to utilize friction (contact) electrification to generate static charges on the surfaces of two materials (at least one of which is an insulating material). When the contact surfaces separate, the separation of static charges creates a potential difference, driving the directional movement of free charges in an induction electrode beneath the insulating surface, thereby collecting mechanical energy from the environment and converting it into electrical energy. Triboelectric nanogenerator technology is suitable for collecting mechanical energy from low-frequency motion, and it has advantages such as simple structure, low cost, and a wide range of material choices, especially for collecting wave energy.

[0003] Wave energy is randomly distributed in both time and space. These uncertainties lead to the instability of the output of triboelectric nanogenerators. Therefore, in practical applications, the generators have poor adaptability to the environment, especially in terms of low energy harvesting efficiency in the ocean. Summary of the Invention

[0004] Therefore, in order to address the technical problem that the adaptability of existing triboelectric nanogenerators is poor, thus limiting the energy harvesting efficiency, this invention provides a nanogenerator system and its application.

[0005] This invention discloses a nanogenerator system, comprising: multiple nanogenerators and at least one set of chiral connection components.

[0006] Each nanogenerator includes a sleeve, a unidirectional rotation mechanism, and a power generation mechanism. The unidirectional rotation mechanism includes an inertia wheel and a central shaft that rotates unidirectionally within the sleeve. The power generation mechanism includes several triboelectric nanogenerator components. Each set of triboelectric nanogenerator components consists of a rotor unit and a stator unit, and is used to convert mechanical energy into electrical energy. The rotor unit is fixedly connected to the inertia wheel via the central shaft, and the stator unit is fixedly connected to the sleeve.

[0007] Each set of chiral connection components is used to connect the sleeves of two adjacent generators to achieve networking, and to apply torque to the corresponding sleeves under the excitation of fluctuations, thereby causing the sleeves to oscillate back and forth.

[0008] The central shaft is used to restrict the rotor unit to move unidirectionally relative to the stator unit, thereby converting the reciprocating oscillation of the sleeve into unidirectional rotation. The inertia wheel is used to store excitation energy, thereby increasing the duration of unidirectional rotation and superimposing the effect of multiple excitations.

[0009] As a further improvement to the above scheme, each set of chiral connection components includes two sets of connection units arranged in parallel. The two sets of connection units are respectively located at opposite ends of the sleeve along the axial direction and are axially symmetrical along the middle sectional plane of the sleeve. Each connection unit includes two centrally symmetrical connecting rods, with the center of symmetry being the center of a circle at one end of the sleeve. One end of each connecting rod is fixedly connected to the sleeve, and the other end is fixedly connected to a sleeve in an adjacent generator. The connecting rods employ an elastic structure that deforms under external force.

[0010] As a further improvement to the above scheme, each connecting unit also includes a collar. The inner ring of the collar is fixedly fitted onto one end of the outer edge of the sleeve, and the opposite sides of the outer ring are integrally connected to two connecting rods, thereby achieving that the two centrally symmetrical connecting rods are fixed together on the sleeve. The portion of the connecting rod connected to the collar is tangent to the outer edge of the collar.

[0011] As a further improvement to the above solution, the unidirectional rotation mechanism also includes a unidirectional bearing. The unidirectional bearing is embedded in one end of the sleeve. One end of the central shaft is unidirectionally rotatably connected to one end of the sleeve via the unidirectional bearing, and the other end of the central shaft is rotatably connected to the other end of the sleeve.

[0012] As a further improvement to the above scheme, each set of inertia wheels includes a limiting disc and a counterweight ring. The limiting disc is fixedly sleeved on the central shaft and embedded in the counterweight ring. At least one set of inertia wheels is provided, and the center of mass of the sleeve is kept in the central position.

[0013] As a further improvement to the above scheme, in each set of triboelectric nanogenerator components, the stator unit and rotor unit are arranged parallel to each other at intervals. The stator unit includes a stator electrode, a stator substrate, and a soft contact film. The rotor unit includes a triboelectric film and a rotor substrate. One end of the soft contact film is attached to the side of the stator electrode facing the triboelectric film, and the other end contacts the triboelectric film but is not fixed. The stator substrate is matched with the stator electrode and is used to support the stator electrode. The rotor substrate is matched with the triboelectric film and is used to support the triboelectric film.

[0014] As a further improvement to the above solution, a first circular hole is formed around the periphery of the stator substrate. A notch is also formed at the center of the stator substrate to avoid the central shaft. A second circular hole is formed in the center of both the rotor substrate and the limiting disc.

[0015] Each nanogenerator also includes a first fixing component and a second fixing component.

[0016] The first fixing component includes a first screw corresponding to the first circular hole. One end of the first screw is fixed to one end of the sleeve, and the other end passes through the first circular hole and is fixedly connected to the other end of the sleeve. The first screw is fixed to the stator base plate by a nut, thereby realizing the fixed connection between the stator unit and the sleeve.

[0017] The second fixing assembly includes a central washer and a second screw corresponding to the second circular hole. The central washer is fixedly mounted on the central shaft and located at the notch. One end of the second screw passes through the limiting disc and the second circular hole on the rotor base plate. The second screw is first fixedly connected to the limiting disc and the rotor base plate by multiple nuts, and then connected to the central washer, thereby fixing the inertia wheel and the rotor unit together on the central shaft.

[0018] As a further improvement to the above scheme, each set of triboelectric nanogenerator components has two sets of rotor units. The two sets of rotor units are symmetrically arranged on opposite sides of the stator unit. Each set of stator units has four stator electrodes, and the four stator electrodes face the rotor units on both sides in pairs.

[0019] As a further improvement to the above scheme, multiple soft contact films are fixed on each stator electrode, and these multiple soft contact films are distributed in a rotationally symmetrical manner on the surface of the stator electrode. The extended surface of each soft contact film forms an inclined angle with the plane where the stator electrode is located, and the direction of the inclination corresponds to the rotation direction of the corresponding friction film.

[0020] The present invention also discloses an application of a nano-power generation system in wave energy harvesting, wherein the nano-power generation system adopts any of the above-mentioned nano-power generation systems.

[0021] Each sleeve in the nano-power generation system has a sealed cavity inside. The unidirectional rotation mechanism and the power generation mechanism are both located within the cavity of the corresponding sleeve.

[0022] Compared with the prior art, the technical solution disclosed in this invention has the following beneficial effects:

[0023] 1. This invention aims to improve the environmental adaptability of triboelectric nanogenerators, particularly their adaptability to waves to fully harvest wave energy. It proposes a nanogenerator system that, by incorporating a chiral connection structure on the outside of the sleeve, can effectively network multiple generator components, facilitating large-scale applications and enabling high power density output. This will propel nanogenerator technology towards blue energy. Furthermore, the chiral connection structure, when subjected to waves, can cause adjacent sleeves to oscillate, with the impact increasing progressively, thereby increasing the efficiency of providing mechanical energy to each generator component and effectively improving the overall energy harvesting efficiency of the nanogenerator system.

[0024] Based on the fundamental principles of triboelectric nanogenerators, this nanogenerator system utilizes a double-symmetry broken structure composed of a chiral connection structure and a unidirectional rotating central axis structure. This structure converts randomly distributed wave energy into unidirectional rotational mechanical energy, enhancing the generator's adaptability to the uncertainties of wave energy. Furthermore, the energy storage function of the inertial wheel structure converts intermittent mechanical energy into continuous rotational kinetic energy, extending the continuous output time of the nanogenerator. This generator reduces losses and improves energy conversion efficiency, thereby enhancing the sustainability and stability of blue energy harvesting. Additionally, the unidirectional bearing allows the inertial wheel structure to exhibit a unidirectional accelerating rotational tendency, further increasing output power.

[0025] 2. This nano-power generation system can construct a chiral connection network using chiral connection components. Multiple connecting rods with elastic deformation capabilities form a chiral connection, which is connected in pairs to the top and bottom of the generator sleeve, enabling large-scale networking of generators. Driven by waves, the contraction and recovery of the driving connecting rods apply torque to the entire generator, causing the sleeve to produce periodic oscillating motion. A one-way bearing is used to achieve a rotational connection between the central shaft and the sleeve, allowing torque to be applied only in one direction, causing the rotor to rotate in one direction, converting the energy of bidirectional oscillation into kinetic energy of unidirectional rotation. Using a one-way bearing instead of a traditional bidirectional bearing superimposes the kinetic energy of bidirectional rotation into the kinetic energy of unidirectional rotation, achieving energy accumulation, reducing energy consumption, and improving energy collection efficiency.

[0026] 3. This nanogenerator system incorporates an inertial wheel structure. Its annular counterweight stores energy, and a limiting disc fixes the counterweight's position. The counterweight is integrated with the generator's rotor unit via a central shaft. When the sleeve and the inertial wheel rotate relative to each other, the generator outputs an electrical signal, converting mechanical energy into electrical energy. The synergistic effect of the double-symmetry-broken structure causes the inertial wheel to rotate continuously in one direction, thus converting intermittent mechanical energy into continuous electrical energy output. Furthermore, the soft-contact structure between the generator's rotor and stator reduces rotational friction, further extending the continuity of the nanogenerator's output. Attached Figure Description

[0027] Figure 1 This is an internal view of the sleeve of each generator in the nano-power generation system of Embodiment 1 of the present invention;

[0028] Figure 2 This is a three-dimensional structural diagram of the chiral connection component in Embodiment 1 of the present invention;

[0029] Figure 3 for Figure 2 A top-view cross-sectional diagram of a nanogenerator;

[0030] Figure 4for Figure 3 Explosion-proof diagram of the internal components of the middle sleeve;

[0031] Figure 5 This is a schematic diagram of the energy harvesting process of the generator in Embodiment 1 of the present invention;

[0032] Figure 6 This is a three-dimensional structural diagram of the power generation component in Embodiment 1 of the present invention;

[0033] Figure 7 for Figure 1 A three-dimensional structural diagram of the middle end cap and the first screw;

[0034] Figure 8 for Figure 1 A three-dimensional structural diagram of the unidirectional rotating component.

[0035] Explanation of main component symbols

[0036] 1. Sleeve; 11. End cap; 12. Sealing cap; 2. Chiral connection assembly; 21. Connection unit; 211. Connecting rod; 212. Collar; 3. One-way rotation mechanism; 31. Central shaft; 32. Inertia wheel; 321. Limiting disc; 322. Counterweight ring; 33. One-way bearing; 4. Triboelectric nano-power generation assembly; 41. Stator unit; 411. Stator electrode; 412. Stator substrate; 413. Soft contact film; 42. Rotor unit; 421. Triboelectric film; 422. Rotor substrate; 51. First screw; 61. Central gasket; 62. Second screw.

[0037] The above description of the main component symbols, together with the accompanying drawings and specific embodiments, provides a more detailed explanation of the present invention. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that when a component is said to be "installed on" another component, it can be directly on the other component or it may be in a component that is centered on it. When a component is said to be "set on" another component, it can be directly set on the other component or it may also be in a component that is centered on it. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or it may also be in a component that is centered on it.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] Example 1

[0042] Please see Figure 1 and Figure 2 This embodiment provides a nano-power generation system that can be used to collect and generate electricity from wave energy in oceans or rivers, and can also collect and generate electricity from wind energy or other energy sources capable of generating wave energy. The nano-power generation system includes multiple nanogenerators and at least one set of chiral connection components 2. Each nanogenerator includes: a sleeve 1, a power generation mechanism, and a unidirectional rotation mechanism 3, and may also include a first fixing component and a second fixing component.

[0043] Two end caps 11 can be fixedly connected to opposite ends of the inner surface of the sleeve 1. In this embodiment, two sealing caps 12 can also be fixedly connected to both ends of the sleeve 1, thereby forming a sealed cavity inside the sleeve 1. The two sealing caps 12 can be located on opposite outer sides of the two end caps 11. The sealing caps 12 can further provide a good sealing effect, preventing the inside of the generator, i.e., the inside of the sleeve 1, from being affected by the humidity of the external environment.

[0044] The chiral connecting assembly 2 is installed outside the sleeve 1 and includes two sets of connecting units 21 arranged in parallel to each other. The two sets of connecting units 21 are respectively located at opposite ends outside the sleeve 1 and are axially symmetrical along the middle cross-section of the sleeve 1. Each set of connecting units 21 includes two connecting rods 211 and may also include a collar 212.

[0045] The same end of the two connecting rods 211 is fixedly connected to the outer edge of the same end of the sleeve 1, and they are centrally symmetrical along the axis of the sleeve 1. The connecting rods 211 adopt an elastic structure that deforms when subjected to external force.

[0046] The inner ring of the collar 212 is fixedly fitted onto one end of the outer edge of the sleeve 1. The outer ring of the collar 212 is integrally connected to two connecting rods 211 on opposite sides, thereby fixing the two connecting rods 211 onto the sleeve 1. In this embodiment, the connecting rod 211 can be straight when not under compression, with one end pointing tangent to the outer edge of the corresponding collar 212. Of course, in other embodiments, the connecting rod 11 can also be curved or other shapes when not under compression. Figure 2One end of the connecting rod 211 is fixed to the collar 212 of the generator in this embodiment, and the other end can be connected to the collar 212 of another generator. Figure 2 Only one set of generators is shown in the image; the generators adjacent to it are not shown. It can be seen that two adjacent nanogenerators can be connected collaboratively through two common parallel connecting rods 211.

[0047] In this embodiment, the connecting rod 211 can be made of an elastic polymer material, capable of repeated stretching and contraction. After one end of the connecting rod 211 is nested on the sleeve 1 via the collar 212, the other end of the connecting rod 211 can be connected to the collar 212 on an adjacent generator. In other words, two adjacent generators share this connecting rod 211. In this way, a networked connection between devices can be achieved through the connecting rod 211.

[0048] The multiple nanogenerators that form a network connection can be arranged in a linear manner or in other ways.

[0049] In this embodiment, the two connecting rods 211 in the same set of connecting units 21 are nested, one above the other, on the same end of the sleeve 1, maximizing the torque. Furthermore, the opposing connecting rods 211 in the two sets of connecting units 21 are in essentially the same state. For example... Figure 2 As shown, the two connecting rods 211 located at the bottom (left) of the sleeve 1 are in a retracted state, while the two connecting rods 211 located at the top (right) of the sleeve 1 are in a stretched state. Through the contraction and stretching of this connection structure, irregular wave energy can be converted into regular oscillations of the device. Of course, in other embodiments, the chiral connection structure can be replaced by other chiral connection methods.

[0050] The unidirectional rotating assembly 3 includes a central shaft 31, at least two sets of inertia wheels 32, and may also include a unidirectional bearing 33.

[0051] Please combine Figure 3 and Figure 4The two ends of the central shaft 31 are coaxially mounted on two end caps 11, and the central shaft 31 and the end caps 11 are unidirectionally rotatably connected. In this embodiment, the outer ring of the one-way bearing 33 can be embedded in one of the end caps 11. One end of the central shaft 31 can be fixed to the inner ring of the one-way bearing 33, achieving a unidirectional rotatable connection with one of the end caps 11. The other end of the central shaft 31 is rotatably connected to the other end cap 11. The two can use a unidirectional bearing for rotation or a traditional two-way bearing. That is, at least one one-way bearing 33 is required at both ends of the central shaft 31. The one-way bearing 33 has two states: locked and free, so that the central shaft 31 can only rotate in one direction. Compared with the traditional two-way rotation, this structure reduces energy loss, promotes the continuous accumulation of unidirectional kinetic energy, and improves the energy utilization rate at both ends.

[0052] Each set of inertia wheels 32 includes a limiting disc 321 and a counterweight ring 322. The limiting disc 321 is fixedly sleeved on the central shaft 31 and embedded in the counterweight ring 322. In this embodiment, two sets of inertia wheels 32 can be provided, and these two sets of inertia wheels 32 can be symmetrically distributed along the length direction of the central shaft 31, thereby keeping the center of mass of the sleeve 1 and the entire generator in the central position. In addition, the inertia wheels 32 are not limited to a ring structure; other structures with inertial effects can be used. In this embodiment, the inertia wheels 32 can be connected to the central shaft 31 as a whole through a second fixing component. The detailed structure of the second fixing component will be described in detail below.

[0053] In this embodiment, the aforementioned chiral connection structure and the unidirectional rotating central shaft 31 form a double-symmetry broken structure. When the one-way bearing 33 is in a free state, the motion state of the inertia wheel 32 remains unchanged, i.e., it rotates freely. When the one-way bearing 33 is in a locked state, the central shaft 31 is subjected to torque, thereby accelerating the rotation of the inertia wheel 32. Therefore, no matter how the sleeve 1 swings, the inertia wheel 32 always maintains a rotating state, or even accelerates its rotation. Finally, under the synergistic effect of the double-symmetry broken structure and the inertia wheel structure, intermittent irregular wave energy is converted into continuous rotational mechanical energy. It should be added that in some embodiments, the one-way bearing 33 can also be replaced by other mechanisms that cause unidirectional motion, such as a ratchet.

[0054] Please see Figure 5 The figure shows the principle of energy harvesting process of a single nanogenerator. Under the action of the random wave shown in state A, the generator device causes the different connecting rods 211 to contract and stretch (state B), and the sleeve 1 swings accordingly. Finally, under the synergistic action of the one-way bearing 33 and the inertia wheel 32, it is converted into continuous rotational kinetic energy (state C).

[0055] Like the unidirectional rotation mechanism 3, the power generation mechanism is also located inside the cavity of the sleeve 1. The power generation mechanism includes several triboelectric nanogenerators 4.

[0056] Please combine Figure 6 In this embodiment, the number of triboelectric nano-power generation components 4 is set to one. Of course, in other embodiments, multiple components can be set according to the extension length of the sleeve 1, integrating multiple sets of soft contact power generation structures. The power generation component 4 includes a stator unit 41 and a rotor unit 42. The stator unit 41 and the rotor unit 42 are arranged parallel to each other at intervals.

[0057] The stator unit 41 is fixedly connected inside the sleeve 1. The rotor unit 42 is fixedly sleeved on the central shaft 31. The stator unit 41 may include stator electrodes 411, soft contact films 413, and stator substrates 412. The stator substrates 412 are matched with the stator electrodes 411 and serve as carriers for the stator electrodes 411, supporting the stator electrodes 411.

[0058] The rotor unit 42 may include a friction film 421 and a rotor substrate 422. The rotor substrate 422 is matched with the friction film 421 and serves as a carrier for the friction film 421, supporting the friction film 421.

[0059] One end of the soft contact film 413 can be attached to the side of the stator electrode 411 facing the friction film 421 as a charge replenishment source, while the other end is in contact with the friction film 421 but not fixed.

[0060] When the central shaft 31 rotates in one direction, the friction film 421 generates static charge by rubbing against the stator electrode 411 through the soft contact film 413, thereby converting the mechanical energy of the unidirectional rotation into a continuous electrical signal output.

[0061] In this embodiment, each power generation component 4 can have two sets of rotor units 42. The two sets of rotor units 42 are symmetrically arranged on opposite sides of the stator unit 41. Each set of stator units 41 can have four stator electrodes 411, with each of the four stator electrodes 411 facing each of the two sets of rotor units 42 in pairs. Figure 6 As shown, the stator electrode 411 may include a plurality of interconnected electrode strips, and two stator electrodes 411 are arranged alternately on the surface of the stator unit 41 to form interdigitated electrodes.

[0062] Furthermore, four soft contact films 413 can be fixed on each stator electrode 411, and these four soft contact films 413 can be distributed in a rotationally symmetrical manner on the surface of the stator electrode 411. The extended surface of each soft contact film 413 forms an inclined angle with the plane where the stator electrode 411 is located. This inclined angle can be an acute angle, and the direction of inclination corresponds to the rotation direction of the corresponding friction film 421. In this way, the structure formed by multiple soft contact films 413 is similar to the structure of an origami windmill. The bonding direction of the soft contact films 413 is consistent with the rotation direction of the rotor and is in contact with the surface of the friction film 421, which can continuously replenish the charge of the friction film 421 to stabilize its output. The rotational mechanical energy is converted into a continuous electrical signal output through the soft contact structure.

[0063] In some embodiments, the number, area, and structure of the soft contact film 413 can be varied, with polymer as the primary material and a preferred thickness of 25 micrometers. The opposing surfaces of the two friction films 421 have identical structures, serving as triboelectric layers to primarily generate static charge; their material is also primarily polymer. Furthermore, the rotor substrate 422 has a plate-like structure and can be composed of various functional structural materials, preferably insulating materials such as polymers, inorganic oxides, and composite materials. The grid size and number of the friction films 421 can be varied.

[0064] The stator electrodes 411 on both sides of the stator substrate 412 have the same structure, and the grid size and number of the stator electrodes 412 can also be varied. Their function is to sense charge and output signals. The stator electrodes 412 are used to sense charge and output signals, and can be made of conductive materials such as metal, carbon materials, or ITO (Indium Tin Oxide).

[0065] It should be noted that the triboelectric nanogenerator involved in this embodiment is not limited to a grid structure; any triboelectric nanogenerator driven by rotation or oscillation is applicable.

[0066] Please combine Figure 7In this embodiment, the stator substrate 412 may have four first circular holes arranged in a circumferential array around its periphery. The first fixing component includes four first screws 51 corresponding to the four first circular holes. One end of each first screw 51 is fixed to one end cap 11, and the other end passes through the corresponding first circular hole and is fixedly connected to the other end cap 11, and is fixed to the stator substrate 412 by a nut, thereby achieving a fixed connection between the stator unit 41 and the sleeve 1. Two nuts may be arranged side by side on each first screw 51. These two nuts clamp and fix the stator substrate 412 to prevent axial movement of the stator substrate 412 on the first screws 51, thereby achieving a fixed connection between the stator unit 41 and the sleeve 1. Of course, in other embodiments, the number of first screws 51 and their related components may also be set to other quantities, as long as it can ensure that the stator unit 41 is relatively stably fixed inside the sleeve 1 and is easy to disassemble and assemble.

[0067] In addition, a notch is provided at the center of the stator substrate 412 to avoid interference with the rotating central axis 31.

[0068] Please combine Figure 8 Both the rotor base plate 422 and the limiting disc 321 have four second circular holes arranged in a circumferential array at their center. The second fixing assembly includes a central washer 61 and four second screws 62 corresponding to the four second circular holes. The central washer 61 is fixedly mounted on the central shaft 31 and located near the aforementioned notch. One end of each second screw 62 passes through the second circular holes on the limiting disc 321 and the rotor base plate 422, and is fixed to the limiting disc 321 and the rotor base plate 422 by multiple nuts, thus initially fixing the four rotating parts (two limiting discs 321 and two rotor base plates 422). By connecting with the central washer 61, the four rotating parts can be further fixed to the central shaft 31. This achieves the fixed connection between the inertia wheel 32 and the rotor unit 42 and the central shaft 31. Alternatively, the fixing method between the four rotating parts and the second screws 62 can also be implemented using a nut structure similar to that described above, which will not be elaborated here.

[0069] In addition, the center shim 61 in this embodiment can also serve to separate adjacent rotor units 42 by a certain gap.

[0070] Example 2

[0071] This embodiment provides an application of a nano-power generation system in wave energy harvesting, which can be the nano-power generation system in Embodiment 1.

[0072] In this embodiment, multiple generators in the same power generation system can be arranged in a ribbon-like line, or they can be arranged in multiple parallel linear structures, thus allowing for the construction of a power generation grid with an appropriate area according to actual needs. In practical applications, the nano-power generation system can float on the sea surface or be submerged in seawater. Regardless of the method, energy can be harvested by fixing the power generation system to a stable and non-disposable object, such as a reef, seabed, or even the hull of a ship.

[0073] This power generation system can transform random, low-frequency, short-duration wave excitation into continuously increasing rotor rotation, thus improving power generation performance. Furthermore, through scalable integration and multiple rapidly rotating generators, it can achieve high power density output, opening a new avenue for stable and reliable wave energy harvesting. Additionally, chiral interconnect networks hold promise for large-scale application, driving the industrialization of blue energy.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A nano-power generation system, characterized in that, include: Multiple nanogenerators, each nanogenerator including a sleeve (1), a unidirectional rotation mechanism (3) and a power generation mechanism; the unidirectional rotation mechanism (3) includes an inertial wheel (32) and a central shaft (31) that rotates unidirectionally within the sleeve (1); the power generation mechanism includes several triboelectric nanogenerator components (4); each set of triboelectric nanogenerator components (4) consists of a rotor unit (42) and a stator unit (41) and is used to realize the conversion of mechanical energy into electrical energy; The rotor unit (42) is fixedly connected to the inertia wheel (32) via the central shaft (31), and the stator unit (41) is fixedly connected to the sleeve (1); and At least one set of chiral connection components (2) are used to connect the sleeves (1) of two adjacent generators to achieve networking, and to apply torque to the corresponding sleeves (1) under the excitation of fluctuation, thereby causing the sleeves (1) to swing back and forth. Among them, the central shaft (31) is used to restrict the rotor unit (42) to move in one direction relative to the stator unit (41), thereby converting the reciprocating oscillation of the sleeve (1) into unidirectional rotation; the inertia wheel (32) is used to store excitation energy, thereby increasing the duration of unidirectional rotation and superimposing the effect of multiple excitations; the chiral connection component (2) and the central shaft (31) form a double symmetric broken structure; Each set of chiral connection components (2) includes two sets of connection units (21) arranged in parallel to each other; the two sets of connection units (21) are respectively arranged at opposite ends of the sleeve (1) along the axial direction, and are axially symmetrical along the middle section of the sleeve (1); each set of connection units (21) includes two centrally symmetrical connection rods (211), and the center of symmetry is the center of a circle at one end of the sleeve (1); one end of each connection rod (211) is fixedly connected to the sleeve (1), and the other end is fixedly connected to the sleeve (1) in an adjacent generator; the connection rod (211) adopts an elastic structure that deforms when subjected to external force; The unidirectional rotation mechanism (3) also includes a unidirectional bearing (33); the unidirectional bearing (33) is embedded in one end of the sleeve (1); one end of the central shaft (31) is unidirectionally rotated to one end of the sleeve (1) through the unidirectional bearing (33), and the other end of the central shaft (31) is rotatably connected to the other end of the sleeve (1).

2. The nano-power generation system according to claim 1, characterized in that, Each connecting unit (21) also includes a collar (212); the inner ring of the collar (212) is fixedly sleeved on one end of the outer edge of the sleeve (1), and the opposite sides of the outer ring are integrally connected with two connecting rods (211), thereby realizing that the two centrally symmetrical connecting rods (211) are fixed together on the sleeve (1); wherein, the part of the connecting rod (211) connected to the collar (212) is tangent to the outer edge of the collar (212).

3. The nano-power generation system according to claim 1, characterized in that, Each set of inertia wheels (32) includes a limiting disc (321) and a counterweight ring (322); the limiting disc (321) is fixedly sleeved on the central shaft (31), and the limiting disc (321) is embedded in the counterweight ring (322); at least one set of inertia wheels (32) is provided, and the center of mass of the sleeve (1) is kept in the center position.

4. The nano-power generation system according to claim 3, characterized in that, In each set of triboelectric nanogenerator components (4), the stator unit (41) and the rotor unit (42) are arranged in parallel at intervals; the stator unit (41) includes a stator electrode (411), a stator substrate (412) and a soft contact film (413); the rotor unit (42) includes a triboelectric film (421) and a rotor substrate (422); one end of the soft contact film (413) is attached to the side of the stator electrode (411) facing the triboelectric film (421), and the other end is in contact with the triboelectric film (421) but not fixed.

5. The nano-power generation system according to claim 4, characterized in that, The stator substrate (412) has a first circular hole around its periphery; the stator substrate (412) also has a notch at its center to avoid the central shaft (31); A second circular hole is provided in the middle of both the rotor substrate (422) and the limiting disc (321); Each nanogenerator also includes: The first fixing assembly includes a first screw (51) corresponding to the first circular hole; one end of the first screw (51) is fixed to one end of the sleeve (1), and the other end passes through the first circular hole and is fixedly connected to the other end of the sleeve (1); the first screw (51) is fixed to the stator base plate (412) by a nut, thereby realizing the fixed connection between the stator unit (41) and the sleeve (1); and The second fixing component includes a central washer (61) and a second screw (62) corresponding to the second circular hole; the central washer (61) is fixedly installed on the central shaft (31) and located at the notch; one end of the second screw (62) passes through the limiting disc (321) and the second circular hole on the rotor base plate (422); the second screw (62) is first fixedly connected to the limiting disc (321) and the rotor base plate (422) respectively by multiple nuts, and then connected to the central washer (61), thereby realizing that the inertia wheel (32) and the rotor unit (42) are fixedly connected together on the central shaft (31).

6. The nano-power generation system according to claim 4, characterized in that, Each set of triboelectric nanogenerator components (4) has two sets of rotor units (42); the two sets of rotor units (42) are symmetrically arranged on opposite sides of the stator unit (41); each set of stator unit (41) has four stator electrodes (411), and the four stator electrodes (411) face the rotor units (42) on both sides respectively.

7. The nano-power generation system according to claim 6, characterized in that, Multiple soft contact films (413) are fixed on each stator electrode (411), and the multiple soft contact films (413) are distributed in a rotationally symmetrical manner on the surface of the stator electrode (411); the extended surface of each soft contact film (413) forms an inclined angle with the plane where the stator electrode (411) is located, and the direction of the inclination corresponds to the rotation direction of the corresponding friction film (421).

8. An application of a nano-power generation system in wave energy harvesting, characterized in that, The nano-power generation system adopts the nano-power generation system as described in any one of claims 1 to 7; In the nano-power generation system, each sleeve (1) is provided with a sealed cavity; the unidirectional rotation mechanism (3) and the power generation mechanism are both located in the cavity of the corresponding sleeve (1).

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