A wind energy collection device and a wind energy power generation device

Abstract

The application relates to the technical field of new energy utilization, in particular to a wind energy collecting device and a wind energy generating device. The wind energy collecting device comprises a first supporting shaft, a shell which is sleeved on the first supporting shaft and can rotate relative to the first supporting shaft, a friction nanometer power generation assembly which is arranged in the shell, the friction nanometer power generation assembly comprising a rotor and a stator, the rotor being connected with one of the first supporting shaft and the shell, and the stator being connected with the other one of the first supporting shaft and the shell, and a wind energy capturing assembly which comprises a second supporting shaft and a blade, the second supporting shaft and the first supporting shaft have an included angle, the second supporting shaft is connected with one of the first supporting shaft and the shell, and the blade is rotatably connected to the second supporting shaft. The wind energy collecting device and the wind energy generating device can effectively improve the wind energy capturing efficiency.

Description

Technical Field

[0001] This application relates to the field of new energy utilization technology, and in particular to a wind energy harvesting device and a wind energy power generation device. Background Technology

[0002] Existing wind energy harvesting devices are mostly based on the principle of electromagnetic wind turbines. Their design usually adopts a passive energy harvesting scheme, relying on airflow to naturally drive a fixed structure to complete energy conversion. They lack the ability to actively adapt to non-steady-state wind energy input. For example, micro wind energy harvesting devices based on cup structures or fixed blade structures are designed for relatively stable wind field environments and achieve energy conversion through fixed rotation speed or a single rotation mode.

[0003] However, in real-world engineering environments, wind fields often exist in the form of "high-entropy wind energy," characterized by low density, fragmentation, randomness, and frequent changes in wind direction, such as turbulence, gusts, and eddy winds. Traditional wind energy harvesting devices struggle to adapt to rapid changes in external wind conditions, often exhibiting difficulties in starting up, delayed structural response, and significantly reduced conversion efficiency. This hinders the full utilization of high-entropy wind energy resources in the environment, resulting in a marked limitation on overall energy capture efficiency. Summary of the Invention

[0004] This application discloses a wind energy harvesting device and a wind power generation device, which are used to improve the power generation efficiency of the power generation device.

[0005] To achieve the above objectives, this application provides the following technical solution: In a first aspect, this application provides a wind energy harvesting device, comprising: First support axis; The outer casing is fitted onto the first support shaft and can rotate relative to the first support shaft; A triboelectric nanogenerator is disposed within a housing. The triboelectric nanogenerator includes a rotor and a stator. The rotor is connected to one of a first support shaft and the housing, and the stator is connected to the other of the first support shaft and the housing. A wind energy capture assembly includes a second support shaft and blades, the second support shaft having an angle with a first support shaft, the second support shaft being connected to one of the first support shaft and a housing, and the blades being rotatably connected to the second support shaft.

[0006] In some embodiments, the blade includes a wind vane, a bushing, and a center of gravity adjustment assembly; The windward plate is fixedly connected to the bushing, and the bushing is sleeved on the second support shaft and rotatably connected to the second support shaft. The center of gravity adjustment assembly includes a connecting rod and a counterweight. The first end of the connecting rod is connected to the windward plate and / or the bushing, and the second end of the connecting rod is connected to the counterweight. The counterweight is adjustablely positioned at the second end of the connecting rod.

[0007] In some embodiments, the first support shaft extends along a first direction, and the second support shaft extends along a second direction; The counterweight is slidably connected to the second end of the connecting rod along a third direction; The first direction, the second direction, and the third direction are all perpendicular to each other.

[0008] In some embodiments, the connecting rod includes a plurality of rods and a slider, with the first end of some rods connected to a bushing, the first end of some rods connected to a windward plate, and the second ends of all rods converging at the slider. The counterweight is equipped with a sliding groove, and the slider slides in the groove.

[0009] In some embodiments, the windward plate is an arc-shaped plate, and the wind energy capture assembly further includes a reinforcing rib, the first end of which is connected to the bushing, and the second end of which is connected to the outer edge of the windward plate. And / or, the counterweight includes a conical surface and a plane connected to the conical surface; the groove is provided on the plane.

[0010] In some embodiments, the triboelectric nanogenerator further includes a gasket disposed between the rotor and the stator to create a gap between the rotor and the stator when the rotor rotates relative to the stator.

[0011] In some embodiments, the rotor includes a turntable, a bearing, a first membrane material, and a second membrane material. The turntable is rotatably connected to a first support shaft via the bearing. Multiple first and second membrane materials are included, and the multiple first and second membrane materials are located on the side of the turntable facing the stator. The first and second membrane materials are spaced apart in the circumferential direction of the turntable.

[0012] In some embodiments, the stator includes a support plate and a third membrane material, the support plate being sleeved on and fixedly connected to the first support shaft, and the third membrane material being disposed on the support plate; A gasket is placed between the turntable and the support plate to create a gap between the third membrane material and the first membrane material, and between the third membrane material and the second membrane material.

[0013] In some embodiments, the triboelectric nanogenerator further includes a circuit board disposed between the third membrane material and the support plate, and fixedly connected to the support plate; The circuit board includes a circuit board body, a first electrode, and a second electrode. The first electrode includes multiple electrodes and is disposed corresponding to multiple first films. The second electrode includes multiple electrodes and is disposed corresponding to multiple second films.

[0014] In some embodiments, the wind energy capture assembly includes a plurality of wind energy capture assemblies, which are spaced apart in the circumferential direction of the housing; And / or, the turntable includes a plate body and an annular plate, the annular plate surrounding the circumferential edge of the plate body and being set at an angle to the plate body; the turntable is fixedly connected to the outer shell through the annular plate. And / or, the rotor and stator constitute a triboelectric nanogenerator unit, and the wind energy harvesting device includes 2 to 6 triboelectric nanogenerator units.

[0015] Secondly, this application provides a wind power generation device, comprising: Wind energy harvesting device, wherein the wind energy harvesting device is any of the wind energy harvesting devices described in the above embodiments; Management circuitry is used to store electrical energy generated by the wind energy harvesting device and to power the load.

[0016] The beneficial effects of this application are as follows: The wind energy harvesting device of this application includes a first support shaft, a housing, and a wind energy capture assembly. The first support shaft is the central support shaft of the wind energy harvesting device; the housing is fitted onto the first support shaft and can rotate relative to it. The housing possesses good mechanical strength, heat resistance, and wear resistance, while also exhibiting good dimensional stability and processing precision, meeting the long-term use requirements of the device in complex outdoor environments. Its smooth surface not only improves the overall structural stability but also enhances the device's waterproof sealing performance, allowing it to maintain stable operation over a wide temperature range. A triboelectric nanogenerator assembly is disposed within the housing. The triboelectric nanogenerator assembly includes a rotor and a stator. The rotor is connected to one of the first support shaft and the housing, and the stator is connected to the other of the first support shaft and the housing. Since the housing and the first support shaft can rotate relative to each other, and one stator and one mover are connected to the first support shaft and the other to the housing, when the housing rotates relative to the first support shaft, the stator and mover can also rotate relative to each other. When the stator and mover rotate relative to each other, a potential difference is generated between them, which drives the periodic transfer of charge between the electrodes, thereby achieving efficient conversion of mechanical energy into electrical energy. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of a wind energy harvesting device provided in an embodiment of this application; Figure 2 A perspective view of a wind energy harvesting device provided in an embodiment of this application; Figure 3 A side view of the blades of a wind energy harvesting device provided in an embodiment of this application; Figure 4 for Figure 3 Front view of the blade; Figure 5 An exploded view of the triboelectric nanogenerator unit of a wind energy harvesting device provided in this application embodiment; Figure 6 A circuit diagram of a wind power generation device provided in this application embodiment; Figure 7 The output performance test graphs are shown for triboelectric nanogenerators with different numbers of gates. Figure 8 The output performance test diagram of 5 triboelectric nanogenerators; Figure 9 This is a test diagram of the output performance of a wind power generation device using a refined standard experimental testing platform.

[0018] Figure label: 1-Wind energy harvesting device; 100-First support shaft; 200-Outer shell; 300-Triboelectric nanogenerator assembly; 301-Triboelectric nanogenerator unit; 310-Rotor; 311-Turntable; 3111-Plate body; 3112-Annular plate; 312-Bearing; 313-First membrane material; 314-Second membrane material; 320-Stator; 321-Support plate; 322-Third membrane material; 330-Gasket; 340-Circuit board; 341-Circuit board body; 342-First electrode; 343-Second electrode; 400-Wind energy capture assembly; 50 0-Second support shaft; 600-Blade; 610-Wind vane; 620-Busset; 630-Center of gravity adjustment assembly; 631-Connecting rod; 6311-Rod body; 6312-Slider; 632-Counterweight; 6321-Slide groove; 640-Reinforcing rib; 700-Management circuit; 710-Full-wave rectifier circuit rectifier bridge; 720-Freewheeling diode; 730-Gas discharge tube; 740-Inductor; 750-Energy storage capacitor; 760-Load; L-Busset centerline; D1-First direction; D2-Second direction; D3-Third direction. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone.

[0020] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0021] Currently, integrating new energy acquisition and utilization functions into existing traffic safety facilities has become one of the important research directions in the fields of engineering and energy technology. Roadsides, bridges, tunnel entrances and exits, and the areas surrounding protective facilities are constantly exposed to natural wind fields, with frequent changes in wind speed, direction, and airflow. Effective capture and utilization of ambient wind energy can not only provide auxiliary energy support for the intelligent sensing, lighting, and monitoring systems of traffic safety facilities, but also help improve the overall energy self-sufficiency and operational reliability of these facilities.

[0022] In recent years, with the development of micro-energy and self-powered technologies, triboelectric nanogenerators (TENGs) have gradually attracted widespread attention as a novel energy harvesting technology. TENGs can convert weak mechanical energy in the environment into electrical energy, and have advantages such as simple structure, low cost, and sensitive response to low-frequency, low-amplitude excitations. They are particularly suitable for harvesting energy from unsteady mechanical inputs such as vibration, oscillation, and airflow disturbances, and are very suitable for capturing the high-entropy wind energy widely present in transportation environments, showing promising application prospects in the field of wind energy harvesting.

[0023] Therefore, there is an urgent need to propose a highly efficient wind energy harvesting device that utilizes the power generation principle of triboelectric nanogenerators to capture high-entropy wind energy.

[0024] like Figures 1 to 5 As shown in the figure, this application provides a wind energy harvesting device 1 including: a first support shaft 100, a housing 200, and a wind energy capture component 400.

[0025] The first support shaft 100 is the central support shaft of the wind energy harvesting device 1; the outer casing 200 is fitted onto the first support shaft 100 and can rotate relative to it. The outer casing 200 possesses good mechanical strength, heat resistance, and wear resistance, while also exhibiting good dimensional stability and machining accuracy, meeting the long-term use requirements of the device in complex outdoor environments. Its smooth surface not only improves the overall structural stability but also enhances the device's waterproof sealing performance, allowing it to maintain stable operation over a wide temperature range.

[0026] A triboelectric nanogenerator assembly 300 is disposed within a housing 200. The assembly includes a rotor 310 and a stator 320. The rotor 310 is connected to one of the first support shaft 100 and the housing 200, while the stator 320 is connected to the other of the first support shaft 100 and the housing 200. Since the housing 200 and the first support shaft 100 can rotate relative to each other, and the stator 320 and the mover are connected respectively to the housing 200 and the first support shaft 100, when the housing 200 and the first support shaft 100 rotate relative to each other, the stator 320 and the mover can also rotate relative to each other. When the stator 320 and the mover rotate relative to each other, a potential difference is generated between them, driving the periodic transfer of charge between the electrodes, thereby achieving efficient conversion of mechanical energy into electrical energy.

[0027] like Figures 1 to 5 As shown, the wind energy harvesting component 400 is a component that couples with the airflow. The airflow acts on the wind energy harvesting component 400, and the wind energy harvesting component 400 changes its own attitude after being blown by the airflow, and reacts to the airflow, forming a wind field coupling effect. Specifically, the wind energy harvesting component 400 includes a second support shaft 500 and blades 600. The second support shaft 500 is connected to one of the first support shaft 100 and the outer casing 200. There is an angle between the second support shaft 500 and the first support shaft 100. The blades 600 are rotatably connected to the second support shaft 500. Since the blade 600 and the second support shaft 500 are rotatably connected, when the airflow blows the blade 600, the blade 600 is subjected to the force of the airflow and rotates or oscillates around the second support shaft 500, which reduces the windward area of ​​the blade 600. At this time, the blade 600 drives the second support shaft 500 to rotate under the action of the airflow and its own inertia. The second support shaft 500 can then drive either the outer shell 200 or the first support shaft 100 to rotate, thereby driving the rotor 310 to rotate. This causes the rotor 310 and the stator 320 to rotate relative to each other, thus achieving the power generation effect and forming an energy conversion from wind energy to electrical energy.

[0028] It is important to emphasize that, unlike traditional wind energy harvesting devices, the blade 600 in this application does not simply rotate against the wind like in conventional devices. Instead, it converts the force of the directly blowing wind into rotational power by changing the windward area of ​​the blade 600 itself. Specifically, when the blade 600 is not being blown by the airflow, it faces the wind directly, at which point its surface area is at its maximum. When the airflow impacts the surface of the blade 600, it exerts a force on the blade. Since the blade 600 is rotatably connected to the second support shaft 500, this aerodynamic force forces the blade 600 to rotate around the second support shaft 500 by an angle. After the blade 600 rotates, the windward area of ​​the blade 600, which was originally facing the wind directly, decreases, and the wind resistance experienced by the blade 600 also decreases accordingly. Furthermore, because the blade 600 itself has weight (the counterweight 632 balances the weight distribution of the blade 600), the blade 600 retains inertia to maintain its initial attitude during rotation. This ensures that although the frontal area is reduced, it still has a sufficiently large area to cooperate with the airflow, guaranteeing the airflow's pushing effect on the blade 600. At this point, the blade 600 not only rotates around the second support shaft 500, but also transmits this rotational tendency to the second support shaft 500. In other words, the blade 600, along with the second support shaft 500, begins to revolve as a whole, thus achieving relative rotation between the rotor 310 and the stator 320.

[0029] Because the blade 600 can rotate around the second support shaft 500 when blown by the airflow, this action improves the blade 600's response rate to the airflow. Compared with conventional blades 600 that are always facing the airflow, the blade 600 of this application requires less wind force to start and has a faster response rate. At the same time, because the rotation of the blade 600 reduces the area of ​​the windward surface, the blade 600 exerts less resistance to the airflow. Under constant wind force, the blade 600 is easier to be blown, which means that the rotor 310 can rotate more times, thereby improving power generation efficiency and making it more suitable for capturing "high-entropy" wind energy.

[0030] This system utilizes the coupling between a large-area lightweight component and the surrounding fluid to transform weak airflow disturbances into a considerable mechanical response. In this structure, the blade 600 is primarily subjected to aerodynamic forces generated by dynamic pressure under fluid action, the magnitude of which is proportional to the fluid density, drag coefficient, projected area of ​​the blade 600, and the square of the incoming flow velocity. During the force-bearing process, the blade 600 is affected by the combined influence of fluid forces, gravity and inertial forces, connecting structural constraints, and damping forces. The aerodynamic forces create a pressure difference on the surface of the blade 600, causing the blade 600 to tend to rotate or oscillate, thereby generating a driving torque on the second support shaft 500. This drives the entire system to revolve around the first support shaft 100, which is the main energy input source for the system's operation.

[0031] For example, the outer shell 200 can be made of fiber-reinforced nylon material. It is constructed by splicing together multiple fiber-reinforced nylon sheets.

[0032] Furthermore, such as Figures 1 to 4 As shown, the wind energy harvesting assembly 400 includes multiple wind energy harvesting assemblies 400, which are spaced apart in the circumferential direction of the housing 200. The wind energy harvesting assembly 400 may include 2 to 6 units, preferably, as shown below. Figure 1 As shown, the wind energy capture unit 400 can be configured to have 3 units.

[0033] It should be noted that the multiple wind energy capture components 400 have identical structures, meaning that the blades 600 in each wind energy capture component 400 can rotate around the second support shaft 500 under the influence of airflow. Compared with traditional wind energy capture devices, the wind energy capture device of this application exhibits better coupling between the blades 600 and the airflow. When the airflow acts on each blade 600, each blade 600 can generate a specific rotation angle according to the magnitude and direction of the airflow. The change in the attitude of the blades 600 can also react on the airflow. After being subjected to the reaction force of the blades 600, the airflow changes its magnitude and direction again, and the blades 600 change their rotation angle according to the changes in the airflow, forming a highly coupled cooperative relationship. This coupling system can significantly improve the corresponding efficiency of the wind energy capture device, thereby improving the energy conversion efficiency and making it more suitable for high-entropy wind energy capture application scenarios.

[0034] It should be noted that the second support shaft 500, the outer casing 200, and the rotor 310 can constitute a rotating assembly, while the first support shaft 100 and the stator 320 constitute a fixed assembly. The blade 600 rotates on its own axis while simultaneously driving the second support shaft 500 to revolve around the central axis. The second support shaft 500, through the outer casing 200, drives the rotor 310 to rotate, creating an induced electromotive force with the stator 320, thereby achieving the effect of power generation.

[0035] Of course, in other embodiments, the second support shaft 500, the first support shaft 100, and the rotor 310 can also form a rotating assembly, while the outer casing 200 and the stator 320 form a fixed assembly. The rotation of the blades 600 drives the second support shaft 500 and the first support shaft 100 to revolve, while the outer casing 200 and the stator 320 remain fixed, thereby forming a relative rotation between the rotor and the stator 320, thus achieving the power generation effect.

[0036] Furthermore, such as Figures 1 to 4 As shown, the blade 600 includes a windward plate 610, a bushing 620, and a center of gravity adjustment assembly 630.

[0037] The wind vane 610 is fixedly connected to the bushing 620, and the bushing 620 is sleeved on the second support shaft 500 and rotatably connected to the second support shaft 500 to realize the rotation of the blade 600. The center of gravity adjustment assembly 630 includes a connecting rod 631 and a counterweight 632. The first end of the connecting rod 631 is connected to the wind vane 610 and / or the bushing 620, and the second end of the connecting rod 631 is connected to the counterweight 632. The counterweight 632 is adjustablely positioned at the second end of the connecting rod 631.

[0038] When the external fluid excitation exceeds a certain threshold, the inertial amplification effect enhances the oscillation amplitude. The connecting rod 631 structure bears the axial tensile force and transfers the fluid load to the second support shaft 500, while simultaneously forming geometric constraints on the motion trajectory, causing the external load to redistribute in multiple directions, thereby improving overall stability and reducing local stress concentration. Overall, the blade 600 can be regarded as a fluid-structure interaction system, where the airflow provides the excitation and the structural constraints determine the motion mode. This structure has higher sensitivity to low-speed, random, and multi-directional disturbances in wind energy, thus making it easier to start and generate motion in complex or weak flow environments, thereby achieving a highly sensitive response and effective conversion of low-speed environmental fluid energy.

[0039] It should be noted that the center line of the bushing 620 is the center dividing line of the blade 600 in the first direction D1. The distance between the center line of the bushing 620 and the top of the windward plate 610 is equal to the distance between the center line of the bushing 620 and the bottom of the counterweight assembly, so as to ensure the stability of the blade 600 during rotation.

[0040] In some embodiments, such as Figure 1 As shown, the first support shaft 100 extends along the first direction D1, and the second support shaft 500 extends along the second direction. Figure 3 As shown, the counterweight 632 is slidably connected to the second end of the connecting rod 631 along a third direction. The first direction D1, the second direction, and the third direction are all perpendicular to each other. Specifically, the connecting rod 631 includes multiple rods 6311 and a slider 6312. The first end of some rods 6311 is connected to the bushing 620, and the first end of some rods 6311 is connected to the windward plate 610. The second ends of all rods 6311 are constricted by the slider 6312. The counterweight 632 is provided with a groove 6321, and the slider 6312 slides in conjunction with the groove 6321.

[0041] In the overall structure of the blade 600, the windward plate 610 is located on the upper side of the bushing 620, and multiple rods 6311 are located on the lower side of the bushing 620, giving the blade 600 a special structure. The first ends of the multiple rods 6311 are distributed in a divergent manner on the windward plate 610 or the bushing 620, and the second ends of the multiple rods 6311 converge at the slider 6312. The slider 6312 and the groove 6321 on the counterweight 632 can slide together.

[0042] The counterweight 632 increases the overall weight of the blade 600, allowing the blade 600 to maintain its original free inertia after being blown by the wind, thereby maintaining the contact area between the windward plate 610 and the airflow and preventing the blade 600 from rotating too much, which would affect the overall rotation efficiency of the device.

[0043] It should be noted that, as Figure 4 As shown, when adjusting the position of the counterweight 632, the position of the counterweight 632 can be moved so that the center of gravity of the blade 600 is located on the center line L of the bushing 620. At this time, the blade 600 has the best airflow coupling effect.

[0044] Specifically, such as Figure 2 As shown, the groove 6321 penetrates both end faces of the counterweight 632, forming a through groove, allowing the slider 6312 to extend into the groove 6321 from the end face of the counterweight 632. The cross-section of the groove 6321 can be a structure that is wider at the bottom and narrower at the top, such as a dovetail groove structure. Simultaneously, the cross-section of the slider 6312 is matched with the cross-section of the groove 6321, ensuring that the slider 6312 is confined within the groove 6321 after insertion, allowing it to slide along the groove but not detach from it, thus facilitating the adjustment of the counterweight 632's position.

[0045] It should be noted that when installing the wind energy harvesting device, after each blade 600 is installed on the second support shaft 500, the position of the counterweight 632 needs to be adjusted. Once the counterweight 632 is adjusted to a suitable position, it can be fixed to the slider 6312 by welding or other fixing methods. Note that during welding, the weld points should be evenly distributed to avoid affecting the center of gravity of the blade 600.

[0046] Furthermore, the counterweight 632 includes a conical surface and a plane connected to the conical surface, and the slide groove 6321 is provided on the plane and penetrates the conical surface of the counterweight 632 to facilitate the adjustment function of the slider 6312 within the slide groove 6321.

[0047] In some embodiments, such as Figures 1 to 4 As shown, the windward plate 610 is an arc-shaped plate, which helps to increase the windward area. The wind energy capture assembly 400 also includes a reinforcing rib 640, the first end of which is connected to the bushing 620, and the second end of which is connected to the outer edge of the windward plate 610.

[0048] In some embodiments, such as Figure 5As shown, the triboelectric nanogenerator assembly 300 also includes a gasket 330, which is disposed between the rotor 310 and the stator 320 so that there is a gap between the rotor 310 and the stator 320 when the rotor 310 rotates relative to the stator 320. The design of the gasket 330 enables the rotor 310 and the stator 320 to form a non-contact triboelectric nanogenerator unit 301, which generates a potential difference and drives the flow of charge between the two electrodes without direct contact. The generated electrical signal is led out by the electrode material and wires, processed by the management circuit 700 and stored in the energy storage unit, which can provide power to the load 760, realizing a fully wireless, self-powered wind-driven sensing system.

[0049] For example, the thickness of the shim 330 can be between 0.3 mm and 0.5 mm, used to form a stable gap between the rotor 310 and the stator 320 to ensure a non-contact operating mode and effectively reduce mechanical wear. Preferably, the thickness of the shim 330 can be 0.4 mm.

[0050] Specifically, the rotor 310 includes a turntable 311, a bearing 312, a first membrane material 313, and a second membrane material 314. The turntable 311 is rotatably connected to the first support shaft 100 via the bearing 312. There are multiple first membrane materials 313 and multiple second membrane materials 314. The multiple first membrane materials 313 and multiple second membrane materials 314 are located on the side of the turntable 311 facing the stator 320, and the first membrane materials 313 and the second membrane materials 314 are spaced apart in the circumferential direction of the turntable 311.

[0051] For example, the turntable 311 can be made of fiberglass board, which has a flat surface with high flatness to ensure that the first membrane material 313 and the second membrane material 314 can be glued flat.

[0052] The first membrane material 313 readily loses electrons, while the second membrane material 314 readily gains electrons. For example, the first membrane material 313 can be a PA membrane (polyamide membrane), and the second membrane material 314 can be a FEP membrane (perfluoroethylene propylene membrane).

[0053] The thickness of the first membrane material 313 is between 20 µm and 40 µm. The thickness of the first membrane material 313 can be 20 µm, 25 µm, 30 µm, 35 µm, 40 µm, or any value between any two of the above.

[0054] The thickness of the second membrane material 314 is between 20 µm and 40 µm. The thickness of the second membrane material 314 can be 20 µm, 25 µm, 30 µm, 35 µm, 40 µm, or any value between any two of the above.

[0055] In some embodiments, the thickness of the first membrane 313 may be the same as the thickness of the second membrane 314.

[0056] Furthermore, such as Figure 5 As shown, the stator 320 includes a support plate 321 and a third membrane material 322. The support plate 321 is sleeved on the first support shaft 100 and fixedly connected to the first support shaft 100. The third membrane material 322 is disposed on the support plate 321. A gasket 330 is disposed between the turntable 311 and the support plate 321 so that there is a gap between the third membrane material 322 and the first membrane material 313, and between the third membrane material 322 and the second membrane material 314.

[0057] During the relative motion between the third membrane material 322 and the first membrane material 313 and the second membrane material 314 on the rotor 310, a triboelectric effect is generated, thereby outputting an electrical signal.

[0058] For example, the third membrane material 322 can be a PI membrane (polyimide membrane). The thickness of the third membrane material 322 is between 20 µm and 40 µm, and the thickness of the third membrane material 322 can be 20 µm, 25 µm, 30 µm, 35 µm, 40 µm, and any value between any two of the above.

[0059] like Figure 5 As shown, the triboelectric nanogenerator assembly 300 also includes a circuit board 340, which is disposed between the third film material 322 and the support plate 321 and is fixedly connected to the support plate 321. The circuit board 340 includes a circuit board body 3111, a first electrode 342 and a second electrode 343. The first electrode 342 includes multiple electrodes and is disposed corresponding to multiple first films 313. The second electrode 343 includes multiple electrodes and is disposed corresponding to multiple second films 314.

[0060] The first electrode 342 and the second electrode 343 can be copper electrodes. The circuit board body 3111 can be a fiberglass board, and the two together constitute the circuit board 340. The circuit board 340 is used to collect and extract the electrical signals generated during the triboelectric charging process. These electrical signals are ultimately output by the first electrode 342, the second electrode 343 and the connecting wires and connected to the subsequent management circuit 700.

[0061] The support plate 321 is used to provide overall support and positioning for the stator 320 and the circuit board 340, so as to ensure the structural stability and operational reliability of the non-contact triboelectric nanogenerator unit 301 during operation.

[0062] For example, the size of the circuit board 340 can be a fiberglass board with an outer diameter of 100 mm and an inner diameter of 15 mm, or it can be designed with other sizes or other non-conductive materials such as acrylic sheets as needed.

[0063] It should be noted that, as Figure 2 and Figure 5As shown, the rotor 310 and stator 320 constitute a triboelectric nanogenerator unit 301, and the wind energy harvesting device 1 includes 2 to 6 triboelectric nanogenerator units 301. For example, when the triboelectric nanogenerator units 301 are set to 5 groups, their output performance is tested at a wind speed of 3.5 m / s. Figure 8 As shown, the wind power generation device can generate a voltage of 407 V, a short-circuit current of up to 7.8 µA, and a transferred charge of approximately 236 nC. This indicates that the device has excellent output capability, good durability, and environmental adaptability, and can meet the demand for reliable energy supply during the long-term operation of traffic safety facilities.

[0064] Furthermore, such as Figure 5 As shown, the turntable 311 includes a plate body 3111 and an annular plate 3112. The annular plate 3112 surrounds the circumferential edge of the plate body 3111 and is set at an angle to the plate body 3111. The plate body 3111 is used to attach the first membrane material 313 and the second membrane material 314. The turntable 311 is fixedly connected to the outer casing 200 through the annular plate 3112. Exemplarily, the annular plate 3112 can be fixedly connected to the outer casing 200 by welding, riveting, or other methods.

[0065] On the other hand, this application provides a wind power generation device including: a wind energy collection device 1 and a management circuit 700. The wind energy collection device 1 is the wind energy collection device 1 of any of the above embodiments; the management circuit 700 is used to store the electrical energy generated by the wind energy collection device 1 and supply power to the load 760.

[0066] Specifically, such as Figure 6 As shown, the management circuit 700 includes a full-wave rectifier bridge 710, a gas discharge tube 730, a freewheeling diode 720, an inductor 740, and an energy storage capacitor 750. The full-wave rectifier bridge converts the AC signal output from the triboelectric nanogenerator unit 301 into a DC signal, injects it into the oscillation circuit, and finally stores it in the capacitor for subsequent use, providing power to the load 760. For example, the load 760 can be an environmental monitoring sensor and a wireless communication module in transportation facilities. Of course, the wind power generation device of this application can also be used in other scenarios, and this application does not limit it.

[0067] The management circuit 700 enables rapid storage and stable release of electrical energy generated by the wind power generation device, thus ensuring good power supply continuity and operational reliability of the entire system even under complex wind conditions. The output performance of the device was tested on a servo motor, and the experimental data obtained are as follows: Figure 7The figure shows a comparison of the output performance of a triboelectric nanogenerator unit 301 at different numbers of gates under the condition of a rotation speed of 90 rpm. As the number of gates increases, the output performance and frequency are significantly improved. The "number of gates" mentioned above refers to the number of friction materials arranged on the rotor 310, that is, the total number of the first film material 313 and the second film material 314.

[0068] like Figure 9 As shown, the output characteristics of the device were tested using a refined standard experimental testing platform. The electrical signals generated by the device at different rotational speeds showed significant differences. Furthermore, with increasing rotational speed, the amount of transferred charge, open-circuit voltage, and short-circuit current increased accordingly, indicating that the electrical output characteristics of the device are related to rotational speed.

[0069] In some specific implementations, wind power generation devices can be installed near highway guardrails, bridge pillars, and other traffic safety facilities to efficiently collect and convert high-entropy wind energy under complex and unsteady wind conditions. The overall dimensions of the wind power generation device are 300 mm × 300 mm × 255 mm (length × width × height), of which multiple sets of non-contact triboelectric nanogenerators measure 100 mm × 91 mm (diameter × height).

[0070] In summary, the wind energy harvesting device 1 of this application can output an AC signal. After passing through the management circuit 700 of the wind power generation device, the AC signal is rectified into a DC signal usable by everyday sensors, ensuring the normal operation of the load 760 such as the sensing equipment and realizing continuous acquisition of unsteady wind energy. The blades 600 of the wind energy harvesting device 1 can rotate under the influence of airflow, which then triggers revolution. This revolution drives the rotor 310 to rotate relative to the stator 320, capturing high-entropy wind energy using the principle of the triboelectric nanogenerator and converting it into electrical energy, significantly improving the device's start-up performance in low wind speeds and disturbed wind fields. Furthermore, the rotor 310 and stator 320 are non-contact triboelectric nanogenerator units, effectively reducing mechanical wear and improving the long-term reliability of the system. Simultaneously, the wind energy harvesting device 1 adopts a modular structural design, facilitating replacement and ensuring application cost. The simple structure of the wind energy harvesting device 1 reduces processing complexity and maintenance costs.

[0071] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A wind energy harvesting device, characterized in that, include: First support axis; The outer casing is fitted onto the first support shaft and can rotate relative to the first support shaft; A triboelectric nanogenerator assembly is disposed within the housing. The triboelectric nanogenerator assembly includes a rotor and a stator. The rotor is connected to one of the first support shaft and the housing, and the stator is connected to the other of the first support shaft and the housing. A wind energy harvesting assembly includes a second support shaft and blades, the second support shaft having an angle with a first support shaft, the second support shaft being connected to one of the first support shaft and the housing, and the blades being rotatably connected to the second support shaft.

2. The wind energy harvesting device according to claim 1, characterized in that, The blade includes a windward plate, a bushing, and a center of gravity adjustment assembly; The windward plate is fixedly connected to the bushing, and the bushing is sleeved on the second support shaft and rotatably connected to the second support shaft. The center of gravity adjustment assembly includes a connecting rod and a counterweight. The first end of the connecting rod is connected to the windward plate and / or the bushing, and the second end of the connecting rod is connected to the counterweight. The counterweight is adjustablely positioned at the second end of the connecting rod.

3. The wind energy harvesting device according to claim 2, characterized in that, The first support shaft extends along a first direction, and the second support shaft extends along a second direction; The counterweight is slidably connected to the second end of the connecting rod along a third direction; The first direction, the second direction, and the third direction are all perpendicular to each other.

4. The wind energy harvesting device according to claim 3, characterized in that, The connecting rod includes multiple rods and a slider. The first end of some of the rods is connected to the bushing, the first end of some of the rods is connected to the windward plate, and the second end of all the rods is converging and connected to the slider. The counterweight is provided with a sliding groove, and the slider slides in cooperation with the sliding groove.

5. The wind energy harvesting device according to claim 4, characterized in that, The windward plate is an arc-shaped plate, and the wind energy capture assembly also includes a reinforcing rib. The first end of the reinforcing rib is connected to the bushing, and the second end of the reinforcing rib is connected to the outer edge of the windward plate. And / or, the counterweight includes a conical surface and a plane connected to the conical surface; the groove is disposed on the plane.

6. The wind energy harvesting device according to any one of claims 1 to 5, characterized in that, The triboelectric nanogenerator also includes: A gasket is disposed between the rotor and the stator so that when the rotor rotates relative to the stator, there is a gap between the rotor and the stator.

7. The wind energy harvesting device according to claim 6, characterized in that, The rotor includes a turntable, a bearing, a first membrane material, and a second membrane material. The turntable is rotatably connected to the first support shaft via the bearing. There are multiple first membrane materials and multiple second membrane materials. The multiple first membrane materials and multiple second membrane materials are located on the side of the turntable facing the stator, and the first membrane materials and the second membrane materials are spaced apart in the circumferential direction of the turntable.

8. The wind energy harvesting device according to claim 7, characterized in that, The stator includes a support plate and a third membrane material. The support plate is sleeved on the first support shaft and fixedly connected to the first support shaft. The third membrane material is disposed on the support plate. The gasket is disposed between the turntable and the support plate to create a gap between the third membrane material and the first membrane material, and between the third membrane material and the second membrane material.

9. The wind energy harvesting device according to claim 8, characterized in that, The triboelectric nanogenerator also includes a circuit board, which is disposed between the third film and the support plate and is fixedly connected to the support plate; The circuit board includes a circuit board body, a first electrode, and a second electrode. The first electrode includes multiple electrodes and is disposed corresponding to multiple first films. The second electrode includes multiple electrodes and is disposed corresponding to multiple second films.

10. The wind energy harvesting device according to claim 7, characterized in that, The wind energy capture assembly includes multiple components, which are spaced apart in the circumferential direction of the housing. And / or, the turntable includes a plate body and an annular plate, the annular plate surrounding the circumferential edge of the plate body and forming an angle with the plate body; the turntable is fixedly connected to the outer shell through the annular plate; And / or, the rotor and the stator constitute a triboelectric nanogenerator unit, and the wind energy harvesting device includes 2 to 6 triboelectric nanogenerator units.

11. A wind power generation device, characterized in that, include: A wind energy harvesting device, wherein the wind energy harvesting device is the wind energy harvesting device according to any one of claims 1 to 10; A management circuit is used to store the electrical energy generated by the wind energy harvesting device and to supply power to the load.

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