CN115276459A - Triboelectricity-electromagnetism-piezoelectricity hybrid wind energy collecting device - Google Patents
Triboelectricity-electromagnetism-piezoelectricity hybrid wind energy collecting device Download PDFInfo
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- CN115276459A CN115276459A CN202210952502.9A CN202210952502A CN115276459A CN 115276459 A CN115276459 A CN 115276459A CN 202210952502 A CN202210952502 A CN 202210952502A CN 115276459 A CN115276459 A CN 115276459A
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- 229910052802 copper Inorganic materials 0.000 claims description 13
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- -1 polytetrafluoroethylene Polymers 0.000 claims description 9
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical group [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 claims description 6
- 229910052451 lead zirconate titanate Inorganic materials 0.000 claims description 6
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims description 6
- 229910002113 barium titanate Inorganic materials 0.000 claims description 5
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims description 4
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- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 4
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- 229920009441 perflouroethylene propylene Polymers 0.000 claims description 4
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- 239000013013 elastic material Substances 0.000 claims description 3
- 238000003306 harvesting Methods 0.000 claims 8
- UYLYBEXRJGPQSH-UHFFFAOYSA-N sodium;oxido(dioxo)niobium Chemical compound [Na+].[O-][Nb](=O)=O UYLYBEXRJGPQSH-UHFFFAOYSA-N 0.000 claims 1
- 230000005674 electromagnetic induction Effects 0.000 abstract description 5
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- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
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- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a triboelectric-electromagnetic-piezoelectric hybrid wind energy collecting device which comprises a chassis, a fixed disc and a wind cup, wherein the chassis is provided with a plurality of grooves; a connecting shaft is rotatably arranged in the center of the chassis, the connecting shaft is rotatably connected with the fixed disc, and the chassis is fixedly connected with the fixed disc; the connecting shaft is fixedly connected with a rotary table which is arranged between the chassis and the fixed disc; the connecting shaft extends out of the fixed disc and is connected and fixed with the wind cup; the chassis and the turntable are respectively provided with a friction stator and a friction rotor; the friction rotor is in sliding contact with the friction stator; the rotary disc and the fixed disc are respectively provided with a driving magnet and an induction coil; the fixed disc is provided with a piezoelectric cantilever power generation unit; the wind cup drives the turntable to rotate so as to control the friction rotor, the driving magnet and the piezoelectric cantilever power generation unit to generate power; through ingenious setting, integrate friction nanometer power generation technique, electromagnetic induction power generation technique and piezoelectricity nanometer power generation technique, make the device also can have better response at low wind speed, and then make full use of the wind energy of smallness greatly, improve the collection efficiency of wind energy.
Description
Technical Field
The invention relates to the field of wind power generation equipment, in particular to a triboelectric-electromagnetic-piezoelectric hybrid wind power collection device.
Background
The current energy crisis is threatening the development of human survival and society, petroleum energy is non-renewable and has great environmental pollution, and the development of novel renewable and environment-friendly energy is the current trend. Wind energy is a widely distributed, clean and renewable ideal energy source.
At present, the wind power generation technology is mature, but the effective utilization of the wind power generation technology is limited due to the characteristics of low wind energy density and instability. In addition, the current wind power generator is mainly based on an electromagnetic generator, and the working principle of the wind power generator is the electromagnetic induction law, so the output performance of the wind power generator depends on the change rate of magnetic flux or the speed of a wire cutting magnetic induction line. Therefore, the wind speed sensor has better response to high frequency or high wind speed, and few technologies which have good response to low wind speed to high wind speed exist at present.
The friction nano generator can convert mechanical energy into electric energy by utilizing a contact electrification phenomenon and an electrostatic induction effect, and has unique advantages in the aspect of wind energy collection.
The piezoelectric nano generator is a power generation technology for converting mechanical energy into electric energy through deformation of a piezoelectric material, has the characteristics of small volume and high energy density, and is rarely used for collecting wind energy.
In recent years, the research on a triboelectric-electromagnetic hybrid generator which utilizes the high voltage of a triboelectric nano generator and the high current complementation of an electromagnetic generator is wide, and few energy collecting devices which are compounded by triboelectric-electromagnetic-piezoelectric three energy forms are provided.
Therefore, a technical scheme capable of effectively improving the wind energy collection efficiency is urgently needed.
Disclosure of Invention
The invention aims to provide a triboelectric-electromagnetic-piezoelectric hybrid wind energy collecting device to further improve the wind energy collecting efficiency of the conventional wind energy collecting device.
In order to solve the technical problem, the invention provides a triboelectric-electromagnetic-piezoelectric hybrid wind energy collecting device which comprises a chassis, a fixed disc and a wind cup, wherein the chassis is provided with a plurality of grooves; a connecting shaft is rotatably arranged in the center of the chassis, the connecting shaft is rotatably connected with the fixed disc, and the chassis is fixedly connected with the fixed disc; the connecting shaft is fixedly connected with a rotary table, and the rotary table is arranged between the chassis and the fixed disc; the connecting shaft extends out of the fixed disc and is fixedly connected with the wind cup; the chassis and the turntable are respectively provided with a friction stator and a friction rotor; the friction rotor is in sliding contact with the friction stator; the turntable and the fixed disk are respectively provided with a driving magnet and an induction coil; the fixed disc is provided with a piezoelectric cantilever power generation unit; the wind cup drives the rotary disc to rotate and is used for controlling the friction rotor, the driving magnet and the piezoelectric cantilever power generation unit to generate power.
In one embodiment, a shaft sleeve is arranged on the axis of the fixed disc; the shaft sleeve is fixedly connected with a central shaft hole of the fixed disc, and the fixed disc is arranged between the shaft sleeve and the rotary disc; the shaft sleeve is provided with a flange, and the flange is fixedly connected with the piezoelectric cantilever power generation unit; the distance between the piezoelectric cantilever power generation unit and the fixed disk is 5-20mm.
In one embodiment, the piezoelectric cantilever power generation unit comprises a piezoelectric sheet, a cantilever beam and a counterweight magnet; the cantilever beam is fixedly connected with the flange and extends to the edge of the fixed disc; the piezoelectric patch is mounted on the cantilever beam, the piezoelectric patch being disposed adjacent to the flange; the counterweight magnet is arranged on one side, facing the fixed disc, of the cantilever beam, and the counterweight magnet is arranged above the rotating path of the driving magnet; the driving magnet and the counterweight magnet repel each other; the driving magnet is used for driving the cantilever beam to vibrate and deform.
In one embodiment, the induction coil is mounted on one side of the fixed disc, which faces the turntable; the induction coil is disposed on a rotation path of the driving magnet.
In one embodiment, the material of the cantilever beam is elastic material.
In one embodiment, the piezoelectric sheet is lead zirconate titanate, potassium sodium niobate, bismuth sodium titanate, or barium titanate.
In one embodiment, the friction stator is tiled on the surface of the chassis facing the turntable; the friction rotor is sheet-shaped; the friction rotor is in sliding contact with the friction stator in an elastic abutting manner.
In one embodiment, the turntable is provided with a plurality of fixing grooves, and the plurality of friction rotors are respectively embedded into the plurality of fixing grooves; the friction stator comprises a first stator electrode and a second stator electrode; the first stator electrodes and the second stator electrodes are alternately arranged along the circumference of the chassis, and the first stator electrodes and the second stator electrodes are 0.5-2mm apart; the plurality of first stator electrodes are electrically connected to form a stator group, and the plurality of second stator electrodes are electrically connected to form a stator group.
In one embodiment, the friction stator is nylon or copper; the friction rotor is made of polytetrafluoroethylene, fluorinated ethylene propylene copolymer, polyethylene terephthalate or polyimide.
The invention has the following beneficial effects:
therefore, when the friction rotor and the friction stator are applied, triboelectric power generation can be realized; electromagnetic induction power generation can be realized through the induction coil, the driving magnet and the counterweight magnet; through the driving magnet and the piezoelectric cantilever power generation unit, piezoelectric power generation is realized; three power generation modes are integrated, and the driving force of wind energy can be fully utilized to generate power; particularly, the piezoelectric cantilever power generation unit is realized by utilizing the cantilever beam structure, and in the electromagnetic induction power generation, the low-frequency vibration of the counterweight magnet is converted into high-frequency vibration, so that the response of the electromagnetic power generation at low wind speed is better.
In addition, a solid foundation is laid for integrating other technologies of friction nano power generation and realizing a multifunctional friction nano generator.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the overall structure of the present invention;
FIG. 3 is a top view of the chassis of the present invention;
FIG. 4 is a mechanical schematic of a piezoelectric patch and cantilever beam of the present invention;
FIG. 5 is a voltage output plot of the piezoelectric power generation of the present invention;
FIG. 6 is a current output plot of the piezoelectric power generation of the present invention;
FIG. 7 is a voltage output plot of the electromagnetic power generation of the present invention;
FIG. 8 is a graph of the current output of the electromagnetic power generation of the present invention;
FIG. 9 is a voltage output plot of the triboelectric power generation of the present invention;
FIG. 10 is a current output plot of the triboelectric generation of the present invention;
fig. 11 is a circuit connection diagram of the present invention.
The reference numbers are as follows:
1. a chassis; 11. a friction stator; 111. a first stator electrode; 112. a stator group; 113. a second stator electrode; 114. two groups of stators;
2. a turntable; 21. a friction rotor; 22. a drive magnet; 23. fixing grooves;
3. fixing the disc; 31. an induction coil; 32. a piezoelectric cantilever power generation unit; 321. a piezoelectric sheet; 322. a cantilever beam; 323. a counterweight magnet; 33. a shaft sleeve; 331. a flange;
4. a connecting shaft;
5. a wind cup.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
One embodiment of the triboelectric-electromagnetic-piezoelectric hybrid wind energy collecting device is shown in fig. 1 to 3, and comprises a chassis 1, a fixed disc 3 and a wind cup 5; a connecting shaft 4 is rotatably arranged in the center of the chassis 1, the connecting shaft 4 is rotatably connected with the fixed disc 3, and the chassis 1 is fixedly connected with the fixed disc 3; the connecting shaft 4 is fixedly connected with a rotary table 2, and the rotary table 2 is arranged between the chassis 1 and the fixed disc 3; the connecting shaft 4 extends out of the fixed disc 3 and is fixedly connected with the wind cup 5; the chassis 1 and the turntable 2 are respectively provided with a friction stator 11 and a friction rotor 21; the friction rotor 21 is in sliding contact with the friction stator 11; the rotary disc 2 and the fixed disc 3 are respectively provided with a driving magnet 22 and an induction coil 31; the fixed disk 3 is provided with a piezoelectric cantilever generating unit 32; the wind cup 5 drives the turntable 2 to rotate for controlling the friction rotor 21, the driving magnet 22 and the piezoelectric cantilever power generation unit 32 to generate power.
It should be noted that the chassis 1 and the fixed disk 3 are connected and fixed through the housing of the triboelectric-electromagnetic-piezoelectric hybrid wind energy collecting device.
Regarding the structure of the wind cup 5, the wind cup 5 is formed by connecting three semicircular balls which form an angle of 120 degrees with each other, and the center of the wind cup 5 is fixedly connected with the connecting shaft 4; the concave faces of the hemispheres are all oriented clockwise as viewed in fig. 1.
When the wind cup is used, the diameter of the wind cup 5 is 60mm, the rotating diameter is 300mm, the diameter of the connecting shaft 4 is 6mm, and the length is 150mm.
Regarding the installation structure of the piezoelectric cantilever power generation unit 32, in this embodiment, as shown in fig. 1 and 2, a bushing 33 is installed on the axis of the fixed disk 3; the shaft sleeve 33 is fixedly connected with a central shaft hole of the fixed disc 3, and the fixed disc 3 is arranged between the shaft sleeve 33 and the rotary disc 2; the shaft sleeve 33 is provided with a flange 331, and the flange 331 is fixedly connected with the piezoelectric cantilever power generation unit 32; the distance between the piezoelectric cantilever generating unit 32 and the fixed disk 3 is 5-20mm.
Further, in order to provide the wind energy collecting device with a piezoelectric power generation function, in this embodiment, as shown in fig. 1 and fig. 2, the piezoelectric cantilever power generation unit 32 includes a piezoelectric sheet 321, a cantilever 322, and a counterweight magnet 323; the cantilever beam 322 is fixedly connected with the flange 331, and the cantilever beam 322 extends to the edge of the fixed disc 3; the piezoelectric patch 321 is mounted on the cantilever beam 322, and the piezoelectric patch 321 is arranged adjacent to the flange 331; the counterweight magnet 323 is arranged on one side of the cantilever beam 322 facing the fixed disk 3, and the counterweight magnet 323 is arranged above the rotating path of the driving magnet 22; the driving magnet 22 and the weight magnet 323 repel each other; the driving magnet 22 is used for driving the cantilever beam 322 to vibrate and deform.
The principle of piezoelectric nano power generation is as follows: based on the piezoelectric effect of the crystal, when the crystal with asymmetric center is deformed by external force, the positive and negative charge centers are separated to form different charges on the surface, and current is generated in an external circuit due to potential difference.
In application, the mechanical schematic diagram of the piezoelectric sheet 321 and the cantilever beam 322 is shown in fig. 4; the cantilever 322 is fixed at one end and free to vibrate at the other end (tip), and only one force needs to be applied to the tip (in a direction perpendicular to the cantilever 322) to maintain the high frequency vibration for a long time.
As shown in fig. 1, the piezoelectric sheet 321 is closely attached to the cantilever 322 in a large area, so that the piezoelectric sheet 321 deforms along with the deformation of the cantilever 322, and the deformed piezoelectric sheet 321 can generate a piezoelectric current. The piezoelectric sheet 321 is 40mm in length, 30mm in width, 0.2mm in thickness and made of lead zirconate titanate piezoelectric ceramic.
In order to improve the efficiency of piezoelectric power generation, as shown in fig. 1, three piezoelectric cantilever power generation units 32 are provided along the circumferential direction of the flange.
Further, the cantilever beam 322 is made of an elastic material.
When in application, the cantilever beam 322 may be made of a material with elasticity, such as a copper sheet, a steel sheet, or an elastic plastic sheet.
Specifically, in this scheme, the cantilever beam 322 is made of beryllium bronze with good elasticity and toughness. The preferred length of cantilever beam 322 is 80mm, and optional range is 60mm ~ 90mm, if the length is too short the swing duration is little, and the length is overlength, and the swing frequency is low.
Further, the piezoelectric sheet 321 is lead zirconate titanate, potassium sodium niobate, bismuth sodium titanate, or barium titanate.
When in use, lead zirconate titanate piezoelectric ceramics (lead zirconate titanate piezoelectric ceramics) is formedThe chemical formula is Pb (Zr) 11x Ti x )O 3 The binary system piezoelectric ceramics of (2) belong to perovskite structure.
Potassium-sodium niobate piezoelectric Ceramics, potassium-sodium niobate Ceramics (potassium-sodium niobate Ceramics) has a chemical formula of K 0.5 Na 0.5 NbO 3 Having ABO 3 A lead-free piezoelectric ceramic of perovskite structure.
Sodium bismuth titanate piezoelectric ceramics, sodium bismuth titanate (BNT for short) is an A-site composite ion perovskite type ferroelectric body and is applied to lead-free piezoelectric ceramic material bodies.
Barium titanate piezoelectric ceramic, wherein the barium titanate is an inorganic substance and has a chemical formula of BaTiO 3 It is a strong dielectric compound material, has high dielectric constant and low dielectric loss, is one of the most widely used materials in electronic ceramics, is known as a pillar in the electronic ceramics industry, and is also applied to lead-free piezoelectric ceramics.
Further, in order to provide the wind energy collecting device with an electromagnetic power generation function, in this embodiment, as shown in fig. 1 and 2, an induction coil 31 is installed on one side of the fixed disk 3 facing the rotating disk 2; the induction coil 31 is disposed on the rotation path of the drive magnet 22.
In order to improve the efficiency of the electromagnetic power generation and the piezoelectric power generation, as shown in fig. 2, three driving magnets 22 and three induction coils 31 are provided along the circumferential direction of the turntable 2 and the fixed disk 3, respectively.
When the induction coil is applied, the number of turns of the induction coil 31 is 2000 turns, and the diameter of a winding copper wire is 0.08mm. The driving magnet 22 and the above counterweight magnet 323 are made of magnetic materials such as neodymium iron boron magnet, samarium cobalt magnet, alnico magnet, ferrite permanent magnet, and the like.
It should be noted that the driving magnet 22, the induction coil 31, and the counterweight magnet 323 are all located on the same path track;
on the basis that the driving magnet 22 and the counterweight magnet 323 repel each other, because the cantilever beam 322 is an elastic element, when the driving magnet 22 rotates with the turntable 2, in the vertical direction as shown in fig. 1, when the driving magnet 22 and the counterweight magnet 323 meet to coincide, the counterweight magnet 323 will drive the cantilever beam 322 to bounce upward; when the driving magnet 22 and the counterweight magnet 323 are overlapped to be separated, the repulsive force of the magnets is weakened to disappear, and the cantilever beam 322 is deformed and restored to jump downwards; the cantilever beam 322 elastically deforms, and the displayed vertical jumping is vibration; the vibration of the cantilever beam 322 drives the piezoelectric patches 321 to deform at the same frequency, thereby realizing piezoelectric power generation.
The principle of electromagnetic power generation: based on Faraday's law of electromagnetic induction, the changing magnetic field produces a changing current; during vibration of the cantilever beam 322, the weight magnet 323 approaches and moves away from the induction coil 31, causing a change in magnetic flux in the induction coil 31, thereby changing an alternating current signal in the induction coil 31.
Further, in order to realize the triboelectric power generation function, in this embodiment, as shown in fig. 1 and fig. 2, a friction stator 11 is tiled on the surface of the chassis 1 facing the turntable 2; the friction rotor 21 is sheet-like in shape; the friction rotor 21 is in sliding contact with the friction stator 11 in elastic abutment.
In application, the distance between the friction stator 11 and the rotating disc 2 is 10-30mm, and the distance is limited to avoid poor contact between the friction rotor 21 and the friction stator 11.
As to the specific arrangement and structure of the friction stator 11 and the friction rotor 21, as shown in fig. 1 to 3, the turntable 2 is provided with a plurality of fixing grooves 23, and the plurality of friction rotors 21 are respectively inserted into the plurality of fixing grooves 23; the friction stator 11 includes a first stator electrode 111 and a second stator electrode 113; the plurality of first stator electrodes 111 and the plurality of second stator electrodes 113 are alternately arranged along the circumference of the chassis 1, and the first stator electrodes 111 and the second stator electrodes 113 are spaced by 0.5-2mm; the first stator electrodes 111 are electrically connected to form a stator group 112, and the second stator electrodes 113 are electrically connected to form a stator group 114.
In application, the friction stator 11: the first stator electrode 111 and the second stator electrode 113 both adopt copper electrodes, the first stator electrode 111 and the second stator electrode 113 are 3 fan-shaped electrodes with equal central angles, and the stator group 112 and the stator group 114 form complementary electrodes. The gap between the electrodes (the gap between two adjacent sector electrodes) is 1mm, and since copper has a good electropositivity (volatile electrons), it acts as both an electrode and a friction layer.
The friction rotor 21: the adopted material is Polytetrafluoroethylene (PTFE), the thickness is 50 mu m, and the shape is a fan-shaped film; when the turntable 2 rotates, the friction rotor 21 is driven to slide through the friction stator 11 for friction.
Further, the friction stator 11 and the friction rotor 21 are made of materials, and the friction stator 11 is made of nylon or copper; the friction rotor 21 is polytetrafluoroethylene, fluorinated ethylene propylene copolymer, polyethylene terephthalate or polyimide.
The friction stator 11 needs to be made of a volatile electronic material such as nylon or copper; the friction rotor 21 is made of an easily available electronic material such as polytetrafluoroethylene, fluorinated ethylene propylene copolymer, polyethylene terephthalate, or polyimide.
Triboelectricity, the principle of generating electricity: the friction rotor 21, namely the PTFE film, has better electronegativity, is easy to obtain electrons and has negative charges; copper has better electropositivity, volatile electrons and positive charge; when the PTFE film is rubbed with copper, the positive charges of the PTFE layer are transferred to the surface of the copper, and the positive charges on the copper are driven to move on the two electrodes due to the electrostatic induction phenomenon along with the movement of the PTFE on the two electrodes, so that an alternating current signal is formed.
The piezoelectric sheet 321, the induction coil 31, the friction stator 11 and the friction rotor 21 are electrically connected: as shown in fig. 11, the circuit connection diagram of the hybrid wind energy collection device is shown, the friction generator is firstly rectified, the three electromagnetic generators are firstly connected in series and then rectified, the three piezoelectric generators are firstly connected in series and then rectified, and are respectively rectified and then connected in parallel, so that electric energy is stored in a capacitor or a battery for use by an electric appliance.
Through experimental verification, the output of the triboelectric-electromagnetic-piezoelectric hybrid wind energy collecting device measured at 60rpm is shown in fig. 5 to 10.
Fig. 5 and 6, piezoelectric generator: the piezoelectric piece 321 deforms along with the vibration of the cantilever beam 322 to generate electric energy. The open circuit voltage was 11.3V and the short circuit current was 44 μ A.
Fig. 7 and 8, electromagnetic generator: the magnet is close to and far away from the coil, and magnetic flux changes are generated in the coil to generate electric energy. The open circuit voltage was 3V and the short circuit current was 4.7mA.
Fig. 9 and 10, friction generator: the turntable 2 carries an electronegative friction rotor 21 (PTFE membrane) sliding over a friction stator 11 (electropositive copper); while the electromotive charge is transferred between the two electrodes, i.e., the stator set 112 and the stator set 114 (copper electrodes), to generate electric energy. The open circuit voltage was 320V and the short circuit current was 4.5 μ A.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. A triboelectric-electromagnetic-piezoelectric hybrid wind energy collecting device is characterized in that,
comprises a chassis, a fixed disc and a wind cup;
a connecting shaft is rotatably arranged in the center of the chassis, the connecting shaft is rotatably connected with the fixed disc, and the chassis is fixedly connected with the fixed disc;
the connecting shaft is fixedly connected with a turntable, and the turntable is arranged between the chassis and the fixed disk;
the connecting shaft extends out of the fixed disc and is fixedly connected with the wind cup;
the chassis and the turntable are respectively provided with a friction stator and a friction rotor; the friction rotor is in sliding contact with the friction stator;
the rotary disc and the fixed disc are respectively provided with a driving magnet and an induction coil;
the fixed disc is provided with a piezoelectric cantilever power generation unit;
the wind cup drives the rotary table to rotate and is used for controlling the friction rotor, the driving magnet and the piezoelectric cantilever power generation unit to generate power.
2. The hybrid triboelectric-electromagnetic-piezoelectric wind energy harvesting device according to claim 1,
a shaft sleeve is arranged on the axis of the fixed disc;
the shaft sleeve is fixedly connected with a central shaft hole of the fixed disc, and the fixed disc is arranged between the shaft sleeve and the rotary disc;
the shaft sleeve is provided with a flange, and the flange is fixedly connected with the piezoelectric cantilever power generation unit;
the distance between the piezoelectric cantilever power generation unit and the fixed disc is 5-20mm.
3. The hybrid triboelectric-electromagnetic-piezoelectric wind energy harvesting device according to claim 2,
the piezoelectric cantilever power generation unit comprises a piezoelectric sheet, a cantilever beam and a counterweight magnet;
the cantilever beam is fixedly connected with the flange and extends to the edge of the fixed disc;
the piezoelectric patch is mounted on the cantilever beam, the piezoelectric patch being disposed adjacent to the flange;
the counterweight magnet is arranged on one side, facing the fixed disc, of the cantilever beam, and the counterweight magnet is arranged above the rotating path of the driving magnet;
the driving magnet and the counterweight magnet repel each other; the driving magnet is used for driving the cantilever beam to vibrate and deform.
4. The hybrid triboelectric-electromagnetic-piezoelectric wind energy harvesting device according to claim 3,
the induction coil is arranged on one side of the fixed disc, which faces the turntable; the induction coil is disposed on a rotation path of the driving magnet.
5. The hybrid triboelectric-electromagnetic-piezoelectric wind energy harvesting device according to claim 3,
the cantilever beam is made of elastic material.
6. The hybrid triboelectric-electromagnetic-piezoelectric wind energy harvesting device according to claim 3,
the piezoelectric sheet is lead zirconate titanate, potassium sodium niobate, sodium bismuth titanate or barium titanate.
7. The hybrid triboelectric-electromagnetic-piezoelectric wind energy harvesting device according to claim 1,
the friction stator is paved on the surface of the chassis facing the turntable;
the friction rotor is sheet-shaped;
the friction rotor is in sliding contact with the friction stator in an elastic abutting manner.
8. The triboelectric-electromagnetic-piezoelectric hybrid wind energy harvesting device according to claim 7,
a plurality of fixing grooves are formed in the rotary table, and the plurality of friction rotors are respectively embedded into the plurality of fixing grooves;
the friction stator comprises a first stator electrode and a second stator electrode;
the first stator electrodes and the second stator electrodes are alternately arranged along the circumference of the chassis, and the first stator electrodes and the second stator electrodes are 0.5-2mm apart;
the first stator electrodes are electrically connected to form a stator group, and the second stator electrodes are electrically connected to form a stator group.
9. A hybrid triboelectric-electromagnetic-piezoelectric wind energy harvesting device according to any one of claims 7 or 8,
the friction stator is made of nylon or copper;
the friction rotor is made of polytetrafluoroethylene, fluorinated ethylene propylene copolymer, polyethylene terephthalate or polyimide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210952502.9A CN115276459A (en) | 2022-08-09 | 2022-08-09 | Triboelectricity-electromagnetism-piezoelectricity hybrid wind energy collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210952502.9A CN115276459A (en) | 2022-08-09 | 2022-08-09 | Triboelectricity-electromagnetism-piezoelectricity hybrid wind energy collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115276459A true CN115276459A (en) | 2022-11-01 |
Family
ID=83750339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210952502.9A Pending CN115276459A (en) | 2022-08-09 | 2022-08-09 | Triboelectricity-electromagnetism-piezoelectricity hybrid wind energy collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115276459A (en) |
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2022
- 2022-08-09 CN CN202210952502.9A patent/CN115276459A/en active Pending
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