Double-wind-gutter friction electromagnetic composite generator

Abstract

The utility model provides a kind of double wind-hopper friction electromagnetic composite generator, to solve the problem of traditional wind energy collector in urban environment starting wind speed high, low wind energy utilization rate. The equipment is driven differential mechanism by double wind-hopper reverse rotation, the relative rotational speed of flywheel I and flywheel II is improved, and then the output performance of friction nanometer power generation module and electromagnetic power generation module is enhanced. Friction nanometer power generation module generates electric energy by the relative sliding of fluorinated ethylene propylene film fixed on the outer wall of flywheel I and copper electrode on the inner wall of flywheel II, while electromagnetic power generation module generates electricity by changing magnetic flux depending on the relative motion of magnet at the bottom of flywheel I and copper coil on flywheel II. The shell is made of PETG or PLA material, with mechanical strength and environmental protection. The composite generator starts at a wind speed as low as 3.6m / s in single wind-hopper mode, effectively collects urban low wind speed wind energy, has stable output performance, can meet the power supply demand of urban public facilities, and has broad application prospect.

Description

Technical Field

[0001] This utility model relates to the technical field of wind power generation equipment, specifically to a dual-wind-bucket friction electromagnetic composite generator. Background Technology

[0002] Traditional wind energy collectors generally suffer from high start-up wind speeds and poor wind energy utilization, especially in urban environments where wind speeds fluctuate greatly and energy density is low, making it difficult to efficiently adapt to the widely distributed but highly variable wind energy resources in cities. Meanwhile, the output performance of single power generation modules (such as triboelectric or electromagnetic power generation alone) is limited and cannot meet the demands of urban public facilities for stable and high-power supply. Therefore, there is an urgent need for a device that can reduce dependence on start-up wind speeds, improve wind energy utilization, and possess a composite power generation structure to address the shortcomings of existing technologies. Summary of the Invention

[0003] The purpose of this invention is to provide a dual-wind-bucket friction-electromagnetic composite generator. By combining dual-wind-bucket drive with a friction-electromagnetic composite power generation structure, it reduces dependence on high wind speeds, improves wind energy utilization, optimizes output performance, and is suitable for urban clean energy application scenarios.

[0004] To achieve the above-mentioned technical objectives and effects, this utility model provides the following technical solution: A dual-wind-bucket triboelectric electromagnetic composite generator includes: a main structure, a triboelectric nano-power generation module, and an electromagnetic power generation module; The main structure includes a wind hopper, a differential mechanism, a casing, and an impeller; The differential mechanism includes flywheel I, flywheel II, conductive slip ring and one-way clutch, and the outer wall of flywheel I is disposed opposite to the inner wall of flywheel II; The triboelectric nanogenerator module consists of a fluorinated propylene film fixed on the outer wall of the flywheel I and a copper electrode fixed on the inner wall of the flywheel II. The fluorinated propylene film and the copper electrode are capable of relative sliding. The electromagnetic power generation module is composed of a magnet fixed to the bottom of the flywheel I and a copper coil fixed to the flywheel II. The magnet and the copper coil can move relative to each other.

[0005] Furthermore, the wind bucket unit includes two wind buckets, which respectively correspond to the flywheel I and flywheel II driving the differential mechanism, forming a dual wind bucket common drive structure; the two wind buckets rotate in opposite directions to increase the relative speed of flywheel I and flywheel II.

[0006] Furthermore, the copper electrode of the triboelectric nanogenerator module includes an electrode A and an electrode B spaced apart, and the fluorinated ethylene propylene film can slide back and forth between electrode A and electrode B to achieve alternating adhesion between the fluorinated ethylene propylene film and electrode A and electrode B.

[0007] Furthermore, the magnet of the electromagnetic power generation module is coaxially arranged with the copper coil. When the magnet rotates with the flywheel I, it can move closer to or further away from the copper coil to change the magnetic flux passing through the copper coil.

[0008] Furthermore, it also includes a circuit connection component, which is electrically connected to the triboelectric nano-power generation module and the electromagnetic power generation module respectively, and is used to output the electrical energy generated by the triboelectric nano-power generation module and the electromagnetic power generation module to an external load or energy storage element.

[0009] Furthermore, the circuit connection component includes a rectifier bridge, which is used to rectify the electrical energy output by the triboelectric nanogenerator module and the electromagnetic generator module.

[0010] Furthermore, the outer shell is made of PETG or PLA material, and the outer shell covers the differential mechanism, the triboelectric nano-power generation module, and the electromagnetic power generation module.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. High wind energy utilization: Through the dual-bucket drive mode, the upper and lower buckets rotate in opposite directions to increase the relative speed of the flywheel. Compared with the single-bucket drive mode, this significantly improves the output performance of the TENG module and EMG module under the same wind speed, solving the problem of poor utilization of traditional wind energy collectors.

[0012] 2. Adaptable to low wind speed scenarios: In single-wind-drive mode, the normal start-up wind speed is only 3.6m / s, which can effectively collect wind energy in low wind speed ranges in cities and reduce dependence on high wind speeds.

[0013] 3. Stable output performance: Adopting a TENG-EMG composite power generation structure, the TENG module has a stable open-circuit voltage, and the EMG module's output power increases steadily with the rotation speed, which can meet the power supply needs of urban public facilities such as LED lights and thermometers and hygrometers.

[0014] 4. Environmentally friendly and highly practical: The outer shell is made of PETG or PLA material, which balances mechanical strength and processability, and PLA material is biodegradable; the equipment is well-suited to urban wind power environments and can serve as a clean power source to reduce pollution, with broad application prospects. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 The device structure of the DW-TEHG of this utility model; Figure 2 This is the internal structure of the TENG module of this utility model; Figure 3 This is the internal structure of the EMG module of this utility model; Figure 4 This is a schematic diagram illustrating the working principle of the DW-TEHG of this utility model; Figure 5 The power generation principle of the TENG module of this utility model; Figure 6 The power generation principle of the EMG module of this utility model; Figure 7 The output performance of the TENG module of this utility model in single wind bucket drive mode; Figure 8 The output performance of the TENG module of this utility model in dual-wind bucket drive mode; Figure 9 Performance comparison of TENG module output under different operating modes; Figure 10 The output performance of the EMG module of this utility model in single-bucket drive mode; Figure 11 The output performance of the EMG module of this utility model in dual-wind-bucket drive mode; Figure 12 To compare the output performance of the EMG module under different operating modes; Figure 13 The output performance of the DW-TEHG of this utility model in dual-wind bucket drive mode; Figure 14 The output performance of the DW-TEHG of this utility model in single-wind bucket drive mode; Figure 15 The circuit connection model for the TENG module and the EMG module; Figure 16 The charging performance of DW-TEHG for different capacitors in single-bucket drive mode and motor speed of 100 rpm; Figure 17Charging performance of DW-TEHG for different capacitors at a speed of 100 rpm and in dual-fan drive mode; The following are the labels in the diagram: 1. Wind bucket, 3. Impeller, 4. Flywheel I, 5. Flywheel II, 6. Conductive slip ring, 7. One-way clutch, 8. Fluorinated ethylene propylene film, 9. Copper electrode, 10. Magnet, 11. Copper coil. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides a dual-wind bucket triboelectric electromagnetic composite generator, comprising: a main structure, a triboelectric nano-power generation module, and an electromagnetic power generation module; The main structure includes a wind hopper 1, a differential mechanism, a housing, and an impeller 3; The differential mechanism includes a flywheel I4, a flywheel II5, a conductive slip ring 6, and a one-way clutch 7, with the outer wall of the flywheel I4 and the inner wall of the flywheel II5 being arranged opposite to each other. The triboelectric nanogenerator module consists of a fluorinated propylene film 8 fixed on the outer wall of the flywheel I4 and a copper electrode 9 fixed on the inner wall of the flywheel II5. The fluorinated propylene film 8 and the copper electrode 9 are capable of relative sliding. The electromagnetic power generation module is composed of a magnet 10 fixed to the bottom of the flywheel I4 and a copper coil 11 fixed to the flywheel II5. The magnet 10 and the copper coil 11 can move relative to each other.

[0019] Furthermore, the wind bucket unit includes two wind buckets 1, which respectively correspond to the flywheel I4 and flywheel II5 driving the differential mechanism, forming a dual wind bucket common drive structure; the two wind buckets 1 rotate in opposite directions to increase the relative speed of flywheel I4 and flywheel II5.

[0020] Furthermore, the copper electrode 9 of the triboelectric nanogenerator module includes an electrode A and an electrode B spaced apart, and the fluorinated ethylene propylene film 8 can slide back and forth between the electrode A and the electrode B to achieve alternating adhesion between the fluorinated ethylene propylene film 8 and the electrode A and the electrode B.

[0021] Furthermore, the magnet 10 of the electromagnetic power generation module is coaxially arranged with the copper coil 11. When the magnet 10 rotates with the flywheel I4, it can move closer to or further away from the copper coil 11 to change the magnetic flux passing through the copper coil 11.

[0022] Furthermore, it also includes a circuit connection component, which is electrically connected to the triboelectric nano-power generation module and the electromagnetic power generation module respectively, and is used to output the electrical energy generated by the triboelectric nano-power generation module and the electromagnetic power generation module to an external load or energy storage element.

[0023] Furthermore, the circuit connection component includes a rectifier bridge, which is used to rectify the electrical energy output by the triboelectric nanogenerator module and the electromagnetic generator module.

[0024] Furthermore, the outer casing is made of PETG or PLA material, and the outer casing covers the differential mechanism, the triboelectric nano-power generation module, and the electromagnetic power generation module. The following will provide a detailed explanation in conjunction with the accompanying drawings: 1. Composition and Working Principle The structure of the dual-wind-bucket friction electromagnetic hybrid generator (DW-TEHG) is as follows: Figure 1 As shown. The detailed structure of the DW-TEHG mainly includes a wind hopper 1, a differential mechanism, a housing, and an impeller 3. The differential mechanism mainly includes a one-way clutch 7, flywheel I 4, flywheel II 5, and a conductive slip ring 6. The structure of the triboelectric nanogenerator module (TENG) is as follows. Figure 2 It mainly includes a wind turbine 1, a one-way clutch 7, a flywheel 14, copper sheets 9, and an FEP film 8. The structure of the electromagnetic power generation module (EMG) is as follows: Figure 3 It mainly includes flywheel II5, coil 11 and magnet 10.

[0025] A fluorinated ethylene propylene (FEP) film 8 fixed to the outer wall of flywheel I4 and a copper electrode 9 fixed to the inner wall of flywheel II5 together constitute the TENG module of the DW-TEHG. A magnet fixed to the bottom of flywheel I4 and a copper coil 11 fixed to flywheel II5 together constitute the EMG module. The wind hopper 1 collects wind energy and drives the two flywheels of the differential mechanism to rotate relative to each other. In the TENG module, the FEP film 8 generates relative sliding friction on the surface of the copper electrode 9, thereby outputting electrical energy. Simultaneously, in the EMG module, the magnetic flux passing through the copper coil 11 changes continuously, generating a continuous current in the copper coil 11.

[0026] The DW-TEHG has two operating modes: a single-bucket drive mode and a dual-bucket drive mode (e.g., ...). Figure 4 (As shown). In wind-driven mode, wind bucket 1 collects wind energy to drive flywheel I4 to rotate clockwise. The differential mechanism's flywheels I4 and II5 rotate relative to each other, and the DW-TEHG outputs electrical energy. Figure 4In the upper and lower bucket joint drive mode shown, the upper and lower bucket units respectively acquire wind energy and drive the two flywheels of the differential mechanism to generate high-speed relative rotation. At the same wind speed, the DW-TEHG in the upper and lower bucket joint drive mode has better output performance compared with the single bucket drive mode.

[0027] The power generation principle of the TENG module is as follows: Figure 5 As shown. First, the FEP film 8 is completely bonded to electrode A, and electrons from the surface of electrode A are injected into the FEP film 8. Second, the FEP film 8 slides towards electrode B, simultaneously bonding to both electrodes A and B. Electrons from the surface of electrode B are injected into electrode A. Third, in... Figure 5 In the first step, the FEP film 8 completely adheres to electrode B, and electrons from the surface of electrode B are completely injected into electrode A. Finally, the FEP film 8 slides towards electrode A, simultaneously adhering to both electrodes A and B, and electrons from the surface of electrode A are injected into electrode B. Furthermore, Figure 6 The power generation principle of the EMG module is described in detail. When magnet 10 and copper coil 11 approach each other, the magnetic flux through copper coil 11 increases, generating a clockwise current in copper coil 11. Then, when magnet 10 and copper coil 11 are on the same axis, the magnetic flux through copper coil 11 reaches its maximum value, at which point no current is generated in copper coil 11. Finally, when magnet 10 moves away from copper coil 11, the magnetic flux through copper coil 11 decreases, generating a counterclockwise current in copper coil 11. The power generation process of the DW-TEHG was simulated using COMSOL Multiphysics 5.5a software.

[0028] 2. Performance Based on its working principle, the DW-TEHG has two operating modes: single-bucket drive mode and dual-bucket joint drive mode. To study the output performance of the DW-TEHG in different operating modes, two stepper motors were used to simulate wind energy as the excitation source, and related experiments were conducted. The output performance of the TENG module in the single-bucket drive mode of the DW-TEHG is as follows: Figure 7 As shown, as the fan speed increases, the open-circuit voltage remains essentially constant at approximately 230V. Figure 8 As shown, at a rotational speed of 250 rpm, the short-circuit current and average output power increase to 16.0 μA and 1.66 mW, respectively. The output performance of the TENG module in the dual-bucket co-drive mode of the DW-TEHG is as follows: Figure 8 As shown. In this mode, both motors rotate at the same speed, with the actual rotational speed of the TENG module being twice that of each motor. As the fan speed increases, the open-circuit voltage remains essentially constant at approximately 240V. At a speed of 250 rpm, the short-circuit current and average output power increase to 17.0μA and 1.7mW, respectively.

[0029] Figure 9 The output performance of the TENG module was compared between two operating modes. Compared to the single-bucket drive mode, the TENG module exhibited better output performance in the dual-bucket drive mode. In the dual-bucket drive mode, due to the differential mechanism, the upper and lower motors rotate in opposite directions at the same speed, resulting in relative rotation of the TENG module, with its actual speed being twice the motor speed. Compared to the single-bucket operation mode, the TENG module achieved optimal output performance in the dual-bucket drive mode. This is because, in the dual-bucket drive mode, the upper and lower buckets rotate in opposite directions, increasing the relative speed of flywheel I and flywheel II in the differential mechanism, thus significantly improving the TENG module's output performance. Related experiments were conducted to test the output performance of the EMG module in different operating modes. Figure 10 As shown, in single-bucket drive mode, the open-circuit voltage, short-circuit current, and average output power continuously increase with increasing rotational speed. At a speed of 250 rpm, the EMG module achieves output performance of 124V, 4.3mA, and 23.6mW. Figure 11 As shown, when the EMG module is in dual-fan drive mode, as the drive unit speed increases to 250 rpm, the open-circuit voltage, short-circuit current, and average output power will continue to increase to 125V, 4.4mA, and 24.0mW, respectively.

[0030] Figure 12 The output performance of the EMG module was compared under two operating modes. In the dual-fan drive mode, the actual rotational speed of the EMG module was twice that of the motor. As the motor speed increased to 250 rpm, the open-circuit voltage, short-circuit current, and average output power increased to 21V, 18.6mA, and 20.7mW, respectively.

[0031] A comparison of the output performance of the EMG module under different operating modes is shown below. Figure 12 By comparison, the output performance of the EMG module in the DW-TEHG is only related to the rotational speed.

[0032] In addition, experiments were conducted to test the output performance of the DW-TEHG in a real wind energy environment. When the DW-TEHG is in dual-wind-bucket drive mode, the output performance of the TENG module as wind speed increases is as follows: Figure 13 As shown, as the wind speed increases to 14.4 m / s, the open-circuit voltage of the TENG module remains approximately 257 V, while the short-circuit current and average output power continue to increase to 15.8 μA and 3.54 mW, respectively. When the DW-TEHG is in single-bucket drive mode, the output performance of the TENG module is as follows: Figure 14As shown, with the wind speed increasing to 14.4 m / s, the open-circuit voltage, short-circuit current, and average output power will reach 227V, 12μA, and 2.31mW, respectively. Therefore, in a real wind energy environment, the DW-TEHG exhibits superior output performance in dual-bucket drive mode. Furthermore, as shown in the figure, in single-bucket drive mode, the normal start-up wind speed of the DW-TEHG is 3.6 m / s. In dual-bucket drive mode, due to friction, the upper and lower buckets can only begin to rotate relative to each other when the wind speed reaches 4.9 m / s. When a certain wind speed is reached, the DW-TEHG can collect wind energy simultaneously through the upper and lower buckets, thereby improving wind energy collection efficiency. This solves the thorny problem of high start-up wind speed and poor wind energy utilization in traditional wind energy collectors.

[0033] 3. Demonstration Application In DW-TEHG, the circuit connection model of the TENG module and the EMG module is as follows: Figure 15 As shown. In single-bucket drive mode and with a motor speed of 100 rpm, the charging performance of the DW-TEHG for different capacitors is as follows: Figure 16 As shown. Maintaining a speed of 100 rpm and using the dual-fan drive mode, the DW-TEHG's charging performance for different capacitors is as follows: Figure 17 As shown in the figure. A comparison revealed that the DW-TEHG charges the capacitor faster when in dual-fan drive mode.

[0034] In urban environments, wind energy is widely distributed and abundant. At the same time, cities face significant emissions problems, making the use of clean energy to reduce pollution crucial. Therefore, the DW-TEHG is well-suited for diverse applications in urban environments. It can capture urban wind energy and use it as a clean power source for some urban public facilities. In single-bucket drive mode, with a wind speed of approximately 6.0 m / s, the DW-TEHG can barely power 900 LEDs. Maintaining a constant wind speed, in dual-bucket drive mode, the DW-TEHG can brightly power 900 LEDs. The comparison of LED brightness in the two experiments shows that the DW-TEHG's output performance in dual-bucket drive mode is superior to that in single-bucket drive mode. Furthermore, under the same wind conditions, the DW-TEHG can power a 20mW thermometer and hygrometer for temperature monitoring. Therefore, the DW-TEHG has broad application prospects as a power source for urban public facilities.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A dual-doughnut friction electromagnetic composite generator, characterized by, include: Main structure, triboelectric nano-power generation module and electromagnetic power generation module; The main structure includes a wind bucket (1), a differential mechanism, a shell and an impeller (3). The differential mechanism includes flywheel I (4), flywheel II (5), conductive slip ring (6) and one-way clutch (7), and the outer wall of flywheel I (4) is arranged opposite to the inner wall of flywheel II (5); The triboelectric nanogenerator module is composed of a fluorinated propylene film (8) fixed on the outer wall of the flywheel I (4) and a copper electrode (9) fixed on the inner wall of the flywheel II (5). The fluorinated propylene film (8) and the copper electrode (9) can slide relative to each other. The electromagnetic power generation module is composed of a magnet (10) fixed at the bottom of the flywheel I (4) and a copper coil (11) fixed on the flywheel II (5). The magnet (10) and the copper coil (11) can move relative to each other.

2. The electric generator of claim 1, wherein, The wind bucket unit includes two wind buckets (1), which correspond to the flywheel I (4) and flywheel II (5) of the differential mechanism respectively, forming a dual wind bucket common drive structure; the two wind buckets (1) rotate in opposite directions to increase the relative speed of flywheel I (4) and flywheel II (5).

3. The electric generator of claim 1, wherein, The copper electrode (9) of the triboelectric nanogenerator module includes an electrode A and an electrode B spaced apart. The fluorinated ethylene propylene film (8) can slide back and forth between the electrode A and the electrode B to achieve alternating adhesion between the fluorinated ethylene propylene film (8) and the electrode A and the electrode B.

4. The electric generator of claim 1, wherein, The magnet (10) of the electromagnetic power generation module is coaxially arranged with the copper coil (11). When the magnet (10) rotates with the flywheel I (4), it can move closer to or further away from the copper coil (11) to change the magnetic flux passing through the copper coil (11).

5. The electric generator of claim 1, wherein, It also includes a circuit connection component, which is electrically connected to the triboelectric nano-power generation module and the electromagnetic power generation module respectively, and is used to output the electrical energy generated by the triboelectric nano-power generation module and the electromagnetic power generation module to an external load or energy storage element.

6. The electric generator of claim 5, wherein, The circuit connection assembly includes a rectifier bridge, which is used to rectify the electrical energy output by the triboelectric nanogenerator module and the electromagnetic generator module.

7. The generator according to claim 1, characterized in that, The outer shell is made of PETG or PLA material and is used to cover the differential mechanism, the triboelectric nano-power generation module and the electromagnetic power generation module.

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