Electromagnetic-friction nanometer hybrid generator for wind energy collection

Abstract

The invention discloses an electromagnetic-friction nanometer hybrid generator for wind energy collection, which belongs to the technical field of wind energy, and comprises a stator shell, and a friction nanometer generator module and an electromagnetic generator module are packaged in the stator shell. The electromagnetic generator module is coupled with the friction nanometer generator module and is embedded with the friction nanometer generator module, and the electromagnetic generator module is connected with the friction nanometer generator module through a coaxial connector. According to the electromagnetic-friction nanometer hybrid generator oriented to wind energy collection, the basic configuration and the working principle of the hybrid friction nanometer generator are redesigned, and the soft contact friction nanometer generator based on the ternary dielectric triboelectrification effect is a hybrid electromagnetic generator; efficient energy conversion is realized by utilizing the triboelectrification characteristic of the soft contact material.

Description

Technical Field

[0001] The invention relates to the technical field of wind energy, and in particular to an electromagnetic-friction nano hybrid generator for wind energy collection. Background Art

[0002] Among many mechanical energies, wind energy has significant advantages. It is widely distributed, almost all over the world, with a wide range of wind speeds, from breezes to strong winds. Wind energy is almost unaffected by day and night changes and meteorological conditions. It can continue to provide energy even under variable climate conditions, making it an ideal source of energy for the natural environment. In addition, as a renewable resource, wind energy has less impact on the environment, helps reduce greenhouse gas emissions, and promotes sustainable development. Electromagnetic generators (EMGs) have shown good performance in wind energy conversion, but their large size, high construction cost, and complex mechanical design limit their popularity and use in certain application scenarios.

[0003] In recent years, the research on triboelectric nanogenerator (TENG) in the field of wind energy collection has made significant progress. Wind-powered triboelectric nanogenerators are gradually maturing and showing broad application prospects. With the continuous advancement of TENG technology, the research on triboelectric-electromagnetic hybrid nanogenerators has also made rapid progress.

[0004] Since wind energy in a real wind energy environment has the characteristics of large wind speed changes, variable directions, and unpredictability, natural wind speeds show significant fluctuations in time and space. From seconds to hours, and then to seasonal changes, wind speeds may vary greatly. The direction of the wind is not fixed, but will change with changes in climatic conditions. The appearance and disappearance of natural winds are often difficult to accurately predict, especially on a short time scale. This unpredictability poses challenges to the operation and scheduling of wind power systems, and it is necessary to improve the prediction accuracy through advanced meteorological models and real-time monitoring technologies. Summary of the invention

[0005] The purpose of the present invention is to provide an electromagnetic-friction nano-hybrid generator for wind energy collection. By redesigning the basic configuration and working principle of the hybrid friction nano-generator, a soft-contact friction nano-generator hybrid electromagnetic generator based on the ternary dielectric friction charging effect is developed, which realizes efficient energy conversion by utilizing the friction charging characteristics of soft contact materials.

[0006] To achieve the above-mentioned purpose, the present invention provides an electromagnetic-friction nano-hybrid generator for wind energy collection, comprising a stator housing, in which a friction nano-generator module and an electromagnetic generator module are encapsulated, the electromagnetic generator module and the friction nano-generator module are coupled and embedded with the friction nano-generator module, and the electromagnetic generator module and the friction nano-generator module are connected via a coaxial connector.

[0007] Preferably, the shape of the stator shell is adapted to the shapes of the electromagnetic generator module and the friction nanogenerator module.

[0008] Preferably, the friction nanogenerator module includes a composite friction layer, wherein the composite friction layer includes a PDMS composite membrane electrode and a carbon cloth electrode, the PDMS composite membrane electrode and the carbon cloth electrode are both arranged on the inner wall of the stator housing, and the PDMS composite membrane electrode and the carbon cloth electrode are arranged in seven groups of crosses.

[0009] Preferably, a copper foil is provided between the PDMS composite membrane electrode and the carbon cloth electrode, and the copper foil is electrically connected to an external circuit via a wire.

[0010] Preferably, the electromagnetic generator module includes an electromagnetic coil, a magnet, an iron rod shaft, a rotor bracket, a rotor housing and a gear set. Internal gear rings are provided at both ends of the inner wall of the rotor housing. There are eight electromagnetic coils, and every two are connected in series to form a coil group. Four coil groups are connected in parallel and evenly spaced on the inner wall of the rotor housing. The coils are copper coils.

[0011] Preferably, the rotor bracket is fixedly connected to the iron rod shaft, the rotor bracket is placed in the rotor housing, both ends of the iron rod shaft connected to the rotor bracket are connected to a gear set, and eight magnets are placed on the rotor bracket, two magnets in a group, a total of four groups, evenly distributed on the rotor bracket.

[0012] Preferably, there are two gear sets, the gear sets include a main gear and four sub-gears, the main gear is meshed with the four sub-gears respectively, and the sub-gears are meshed with the inner gear ring on the rotor housing, and the main gear is coaxially arranged with the coaxial connector.

[0013] Preferably, seven groups of PET brackets are fixedly mounted on the outer surface of the rotor housing, and friction copper is connected to the end of the PET bracket, and the friction copper is in contact with the PDMS composite membrane electrode and the carbon cloth electrode.

[0014] Therefore, the present invention adopts the above-mentioned electromagnetic-friction nano-hybrid generator for wind energy collection, and redesigns the basic configuration and working principle of the hybrid friction nano-generator. The soft-contact friction nano-generator hybrid electromagnetic generator based on the ternary dielectric friction charging effect realizes efficient energy conversion by utilizing the friction charging characteristics of soft contact materials.

[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of an embodiment of an electromagnetic-friction nano-hybrid generator for wind energy collection according to the present invention;

[0017] Figure 2 It is a schematic diagram of the rotor support structure of an embodiment of an electromagnetic-friction nano hybrid generator for wind energy collection according to the present invention;

[0018] Figure 3 It is a schematic diagram of the rotor housing structure of an embodiment of an electromagnetic-friction nano hybrid generator for wind energy collection according to the present invention;

[0019] Figure 4 It is a schematic diagram of the rotor housing and PET support structure of an electromagnetic-friction nano hybrid generator embodiment for wind energy collection of the present invention;

[0020] Figure 5 It is a schematic diagram of the stator housing structure of an embodiment of an electromagnetic-friction nano hybrid generator for wind energy collection of the present invention;

[0021] Figure 6 The voltage and current of the electromagnetic generator module of an electromagnetic-friction nano hybrid generator embodiment for wind energy collection of the present invention at different rotation speeds;

[0022] Figure 7 It is the voltage and current of the friction nano generator module of an electromagnetic-friction nano hybrid generator embodiment for wind energy collection of the present invention at different rotation speeds.

[0023] Reference numerals

[0024] 1. Stator housing; 2. Coaxial connector; 3. Rotor bracket; 4. Magnet; 5. Rotor housing; 6. Electromagnetic coil; 7. PET bracket; 8. Friction copper; 9. Carbon cloth electrode; 10. PDMS composite membrane electrode; 11. Copper foil; 12. Gear set. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0026] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] Embodiment 1

[0028] like Figure 1 , Figure 5 As shown, the present invention provides an electromagnetic-friction nano hybrid generator for wind energy collection, including a stator housing 1, in which a friction nano generator module and an electromagnetic generator module are encapsulated, and the stator housing 1 protects the internal friction nano generator module and the electromagnetic generator module. The electromagnetic generator module is coupled with the friction nano generator module and is embedded with the friction nano generator module. The electromagnetic generator module is connected to the friction nano generator module through a coaxial connector 2, wherein the weight of the electromagnetic generator module is less than the weight of the friction nano generator module, and the friction nano generator module and the electromagnetic generator module are both electrically connected to the intelligent energy management module.

[0029] The friction nanogenerator module can generate electricity through the frictional electric effect under light to medium wind speed conditions. The electromagnetic generator module can effectively generate electricity under medium and high wind speeds. The intelligent energy management module is responsible for monitoring wind speed changes and dynamically adjusting the energy output ratio between the two parts based on real-time data, ensuring that the entire system can maintain an efficient and stable working state under various wind speed conditions.

[0030] Figure 6 (a) is the voltage of the electromagnetic generator module at different speeds. Figure 6 (b) is the current of the electromagnetic generator module at different speeds. The five speeds are 30r / min, 90r / min, 150r / min, 180r / min, and 240r / min. Among the five speed gradients, the best performance is achieved at 240r / min, with the voltage reaching 1.1V and the current reaching 150mA.

[0031] Figure 7(a) is the voltage of the friction nanogenerator module at different speeds. Figure 7 (b) is the current of the friction nanogenerator module at different speeds. The five speeds are 30r / min, 90r / min, 150r / min, 180r / min, and 240r / min. In the five speed gradients, the voltage in the steady-state voltage and current state reaches 150V, and the current is 5.5μA. Different speeds result in different frequencies of voltage and current.

[0032] The shape of the stator housing 1 is adapted to the shape of the electromagnetic generator module and the friction nanogenerator module, and the housing size is 25 cm×20 cm×0.5 cm. There are two gear sets 12, each of which includes a main gear and four sub gears. The main gear is meshed with the sub gears, and the sub gears are meshed with the inner gear ring on the rotor housing 5. The diameter of the main gear is 6 cm, and the diameter of the sub gear is 4 cm.

[0033] The friction nanogenerator module includes a composite friction layer, wherein the composite friction layer includes a PDMS composite membrane electrode 10 and a carbon cloth electrode 9. The preparation of the PDMS composite membrane electrode 10 is as follows: PDMS glue and curing agent are prepared in a ratio of 10:1 to prepare a PDMS glue solution, barium titanate and carbon nanotubes are embedded in the PDMS glue solution in a certain ratio, bubbles are removed by ultrasonic vibration, poured into a template, and placed in a vacuum drying oven to dry, thereby preparing the PDMS composite membrane electrode 10.

[0034] The PDMS composite membrane electrode 10 and the carbon cloth electrode 9 are both arranged on the inner wall of the stator housing 1. The PDMS composite membrane electrode 10 and the carbon cloth electrode 9 are arranged in seven groups of crosses. The friction copper 8 is rotated and rubbed to generate a potential difference between the composite friction layers, thereby driving the charge to flow between the composite friction layers to generate current. A copper foil 11 is provided between the PDMS composite membrane electrode 10 and the carbon cloth electrode 9. The copper foil 11 can collect charges, and the copper foil 11 is electrically connected to the external circuit through a wire for efficient conduction and collection of the generated current. This structural design not only improves the efficiency of friction charging, but also ensures the effective transmission of charges.

[0035] The electromagnetic generator module includes an electromagnetic coil 6, a magnet 4, an iron rod shaft, a rotor bracket 3, a rotor housing 5 and a gear set 12. Both ends of the inner wall of the rotor housing 5 are provided with inner gear rings, such as Figure 2As shown, the rotor bracket 3 is fixedly connected to the iron rod shaft, and the iron rod shaft is rotatably connected to the gear set 12 through a bearing. The size of the rotor bracket 3 is 14cm×15cm×0.3cm, and the rotor bracket 3 is placed inside the rotor housing 5. Both ends of the iron rod shaft connected to the rotor bracket 3 are connected to the gear set 12. Eight magnets 4 with a size of 40mm×10mm×4mm are placed on the rotor bracket 3, and each two magnets form a group, a total of four groups, and are evenly distributed on the rotor bracket 3. The magnet group on the rotor bracket 3 rotates clockwise, and the electromagnetic coil 6 on the inner wall of the rotor housing 5 rotates counterclockwise under the transmission of the gear set 12 to induce an induced current.

[0036] The electromagnetic coil 6 has a diameter of 3.5 cm and is eight in number. Every two coils are connected in series to form a coil group. Four coil groups are connected in parallel and evenly spaced on the inner wall of the rotor housing 5. The coil is a copper coil. The arrangement of the coil group ensures the high efficiency of electromagnetic induction.

[0037] like Figure 3 , Figure 4 As shown, seven groups of PET brackets 7 are installed on the outer surface of the rotor housing 5, and friction copper 8 is connected to the end of the PET bracket 7. The friction copper 8 is in contact with the PDMS composite membrane electrode 10 and the carbon cloth electrode 9. The PET bracket 7 and the friction copper 8 are made of PET material film cut into 10mm×10mm curved sheets, and the size of the rotor housing 5 is 15cm×20cm×0.3cm. The friction copper 8 can generate charges by friction with the PDMS composite membrane electrode 10 and the carbon cloth electrode 9 during rotation and collect them by the copper foil 11.

[0038] When the electromagnetic-friction nano hybrid generator for wind energy collection provided by the present invention is used, the magnet group on the rotor bracket 3 rotates clockwise, and the electromagnetic coil 6 on the inner wall of the rotor housing 5 rotates counterclockwise under the transmission of the gear group 12 to induce an induced current. The rotor housing 5 rotates while driving the PET bracket 7 to rotate. When the PET bracket 7 rotates, it drives the friction copper and carbon cloth electrodes 9 and the PDMS composite film electrode 10 to rotate and rub, so that a potential difference is generated between the composite friction layers, thereby driving the charge to flow between the composite friction layers to generate current. The copper foil collects the generated current and transmits it through the wire.

[0039] Therefore, the present invention adopts the above-mentioned electromagnetic-friction nano-hybrid generator for wind energy collection, and redesigns the basic configuration and working principle of the hybrid friction nano-generator. The soft-contact friction nano-generator hybrid electromagnetic generator based on the ternary dielectric friction charging effect realizes efficient energy conversion by utilizing the friction charging characteristics of soft contact materials.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An electromagnetic-friction nano-hybrid generator for wind energy collection, characterized by: It includes a stator shell, in which a friction nanogenerator module and an electromagnetic generator module are encapsulated. The electromagnetic generator module is coupled with the friction nanogenerator module and is embedded with the friction nanogenerator module. The electromagnetic generator module is connected to the friction nanogenerator module through a coaxial connector.

2. The electromagnetic-friction nano-hybrid generator for wind energy collection according to claim 1, characterized in that: The shape of the stator shell is adapted to the shapes of the electromagnetic generator module and the friction nanogenerator module.

3. The electromagnetic-friction nano-hybrid generator for wind energy collection according to claim 1, characterized in that: The friction nanogenerator module includes a composite friction layer, wherein the composite friction layer includes a PDMS composite membrane electrode and a carbon cloth electrode. Both the PDMS composite membrane electrode and the carbon cloth electrode are arranged on the inner wall of the stator housing. The PDMS composite membrane electrode and the carbon cloth electrode are arranged in seven groups in a cross manner.

4. The electromagnetic-friction nano-hybrid generator for wind energy collection according to claim 1, characterized in that: A copper foil is arranged between the PDMS composite membrane electrode and the carbon cloth electrode, and the copper foil is electrically connected to an external circuit through a wire.

5. The electromagnetic-friction nano-hybrid generator for wind energy collection according to claim 1, characterized in that: The electromagnetic generator module includes an electromagnetic coil, a magnet, an iron rod shaft, a rotor bracket, a rotor housing and a gear set. Internal gear rings are provided at both ends of the inner wall of the rotor housing. There are eight electromagnetic coils, and every two are connected in series to form a coil group. The four coil groups are connected in parallel and evenly spaced on the inner wall of the rotor housing. The coils are copper coils.

6. The electromagnetic-friction nano-hybrid generator for wind energy collection according to claim 1, characterized in that: The rotor bracket is fixedly connected to the iron rod shaft, and the rotor bracket is placed in the rotor housing. Both ends of the iron rod shaft connected to the rotor bracket are connected to gear sets. Eight magnets are placed on the rotor bracket, two magnets in a group, a total of four groups, evenly distributed on the rotor bracket.

7. The electromagnetic-friction nano-hybrid generator for wind energy collection according to claim 1, characterized in that: There are two gear sets, including a main gear and four sub-gears. The main gear is meshed with the four sub-gears respectively, and the sub-gears are meshed with the inner gear ring on the rotor housing. The main gear is coaxially arranged with the coaxial connector.

8. The electromagnetic-friction nano-hybrid generator for wind energy collection according to claim 1, characterized in that: Seven groups of PET brackets are fixedly installed on the outer surface of the rotor shell, and friction copper is connected to the end of the PET bracket. The friction copper is in contact with the PDMS composite membrane electrode and the carbon cloth electrode.

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