CN109474199A - Self charge motivates friction generator - Google Patents
Self charge motivates friction generator Download PDFInfo
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- CN109474199A CN109474199A CN201811365829.6A CN201811365829A CN109474199A CN 109474199 A CN109474199 A CN 109474199A CN 201811365829 A CN201811365829 A CN 201811365829A CN 109474199 A CN109474199 A CN 109474199A
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- electrode
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- friction generator
- motivates
- self charge
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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
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Abstract
The present invention relates to a kind of self charges to motivate friction generator, including TENG, the TENG has first electrode and second electrode, the insulative dielectric film being covered in first electrode and/or second electrode, it is characterized by also including having that diode and capacitor constitute from voltage doubling rectifing circuit and to the voltage regulator circuit for carrying out voltage regulator from voltage doubling rectifing circuit, the main TENG first electrode and second electrode are connected to the two diagonal input terminals from voltage-multiplying circuit.Self charge excitation friction generator of the invention is novel in design rationally, of simple structure and low cost.Due to from the design of times laminated structure, so that power generation function quickly generates high driving voltage and quick charge accumulation, cracking large charge density can be generated on the electrode when insulative dielectric film is thicker.
Description
Technical field
The present invention relates to friction nanometer generating fields, and particularly a kind of self charge motivates friction generator (SCE-
TENG)。
Background technique
Friction nanometer power generator (TENG) based on triboelectric effect be widely used for collect such as vibrate, slide, rotation,
Wind energy, water energy, the even ambient mechanicals such as sound energy are to meet the needs of society is to the energy.
The practical application of TENG and commercialization process are largely restricted with its current lower output power, and rub
The output power of nano generator with its density of surface charge that rubs at secondary proportional relation, therefore, for traditional friction nanometer
Generator, a large amount of to work for example: material selection, contact improve, material surface modification, ion implanting and environmental Kuznets Curves etc., all
Bigger output power is obtained to hope in the friction density of surface charge for being dedicated to improving TENG, however restricted and environment and stabilization
Property, extensive practical application can be carried out while being all difficult to realize the big density of surface charge.Therefore, it is necessary to invent a kind of new knot
The friction nanometer power generator of structure obtains the high density of surface charge in atmospheric environment, to realize more extensively and more effective energy
Amount is collected and application.
A kind of energy management of friction nanometer power generator is disclosed in Chinese invention patent application CN201710214174
Circuit and energy management method, energy management circuit include: pulse current control switch, intermediate energy storage element and target energy storage member
Part, wherein pulse current control switch, the movement for two relative motion parts in the friction nanometer power generator make to rub
It wipes after generating induction electrostatic charge between two electrode layers of nano generator, the described two electrode layers of momentary connection generate moment arteries and veins
Rush electric current；Intermediate energy storage element, for storing the electric energy of the momentary pulse electric current；Target energy-storage travelling wave tube, it is described for storing
The electric energy of intermediate energy storage element output.The setting of the pulse current control switch overcomes the output electric current of friction nanometer power generator small
The shortcomings that, transient pulse high current is exported, instantaneous output power is improved, has the element of induction reactance characteristic as energy by introducing
Amount converts with the intermediary of storing process the high efficiency energy storage for realizing friction nanometer power generator TENG.However what the program provided
Charge density with exchange fan-out capability and be still limited.
Summary of the invention
It is an object of that present invention to provide a kind of self charge excitation frictions that high charge density can be obtained in atmospheric environment
Generator.
Technical scheme is as follows:
A kind of self charge excitation friction generator, including TENG, the TENG have first electrode and second electrode, covering
Insulative dielectric film in first electrode and/or second electrode, it is characterised in that: further include oneself for thering is diode and capacitor to constitute
Voltage doubling rectifing circuit and to from voltage doubling rectifing circuit carry out voltage regulator voltage regulator circuit, the main TENG first electrode and
Second electrode is connected to the two diagonal input terminals from voltage-multiplying circuit.
TENG of the invention during the work time, the capacitor from voltage doubling rectifing circuit is led to by electrode in contact separation
The automatic switchover of the series-parallel state of group, the charge realized in main TEGN increase, and generate an exchange output in the loop.It has
Body running principle will be described in detail in conjunction with the embodiments.
The preferred technical solution of the present invention is as follows:
Preferably, the voltage regulator circuit for regulating and controlling includes zener diode or triode control system.
Preferably, what is be correspondingly connected in the first electrode and second electrode and respectively sets between voltage-multiplying circuit input terminal
There is switch, the switch can switch from the connection relationship between voltage-multiplying circuit input terminal and first electrode and second electrode.
Preferably, the generator further includes substrate, is mounted on the outside of first electrode and second electrode, the base
Composite fluid cushion is additionally provided between an electrode in plate and the first, second electrode.
Preferably, the composite fluid cushion is by liquid cushion stacked together, elastic polyurethane foamed cotton layer and flexibility
Layer of silica gel composition, wherein liquid cushion is made of closed rubber jar and its internal liquid filled, elastic polyurethane foam and soft
Property silica gel shore hardness be 5-45Psi.
Preferably, the size of the dielectric insulating film is greater than the size of electrode.
Preferably, the material of first and second electrode is metal or graphite, conducting polymer, radio frequency material
Material.
Preferably, the insulative dielectric film is plastic foil or crystal film.
Preferably, the sum of the capacitor from voltage-multiplying circuit and rectifier diode element leakage current are less than self charge excitation and rub
Wipe the average current of generator.Effective self charge accumulation may be implemented in this way.
Preferably, the substrate is hard insulation or the rigid insulation composite material with metallic substrates.
The present invention also provides a kind of equipment comprising above-mentioned self charge excitation friction generator, and equipment includes: portable
Formula electronics charging equipment, be placed in collecting mechanical energy in environment energy absorption device (such as: the energy absorption device be sole, self charge
Road surface, tire, mouse or keyboard) or from drive environment monitoring device (such as: the monitoring device be liquid leakage monitoring
Device self charge or structural mutation monitoring device).
The beneficial effects of the present invention are:
Self charge excitation friction generator of the invention is novel in design rationally, of simple structure and low cost.Due to from multiplication of voltage
The design of structure so that power generation function quickly generate high driving voltage and quick charge accumulation, even if insulative dielectric film compared with
Also cracking large charge density can be generated on the electrode when thick；It can as charge storage capacitance using the capacitance group from voltage-multiplying circuit
Effectively to simplify structure and reduce cost.In some embodiments, excitation can be stablized and be controlled to the increase of diode and triode
Voltage, to realize the regulation exported to generator；The use of composite fluid cushion can be effectively improved electrode and insulative dielectric
Contact between film is to increase effective charge density.Self charge excitation friction generator has high output charge in atmospheric environment
Density makes it have great potentiality and is driving big electronic equipment, and effective low frequency energy is collected, large-sized application and big
Power self-power supply system etc..
Detailed description of the invention
Fig. 1 is the schematic diagram of the embodiment of the present invention；
Fig. 2 is the schematic diagram of another embodiment of the present invention；
Fig. 3 A-E is the workflow schematic diagram of the embodiment of the present invention；
Fig. 4 A-I is implementation result figure of the embodiment of the present invention.
Fig. 5 is the voltage output effect picture of the embodiment of the present invention.
Specific embodiment
Below with reference to embodiment and specific embodiment, the present invention is described in further detail.But this should not be understood
For the scope of the above subject matter of the present invention is limited to the following embodiments, all technologies realized based on summary of the invention of the invention are equal
Belong to the scope of the present invention.
A kind of self charge excitation friction generator, using structure shown in Fig. 1: TENG includes an electrode of metal 2, metal
Lower electrode 3 and insulative dielectric film 4 be covered on an electrode or that two electrodes are covered with；Self charge excitation system
System includes one from voltage doubling rectifing circuit and to the composition of triode control system 6 from voltage doubling rectifing circuit voltage regulator, described
It is made of from voltage doubling rectifing circuit capacitor 7 and rectifier diode 8；The main TENG and liquid cushion are placed in two pieces of rigid insulations
Between substrate 9.The composite fluid cushion is placed on rigid insulation substrate 9, improve under lower electrode main TENG electrode and
Contact between insulative dielectric film.Wherein, upper and lower base plate 9 is the acrylic board of length and width, thick respectively 45mm, 45mm, 4mm.It is right
It is copper electrode and aluminium electrode respectively in the metal electrode 2 and 3 of TENG, area is about 10cm2, length and width are all 32mm, the radius of falling 5mm
Fillet；Dielectric film 4 uses 9 microns of thick polyimide films, length and width 40mm.Flexible 11 model ecoflex-20 of silica gel；
Liquid cushion is formed using the bonding encapsulation of 1mm thickness business silicane rubber plate 12 " PEG-200 " 13, total thickness 3mm, length and width and acrylic base
Plate 9 is identical；The foam 10 of 2mm thickness is 20Psi polyurethane foam, and length and width are identical with liquid cushion.For self charge excitation system,
8 model 1N4007 of rectifier diode, ceramic disc capacitor 7 are 10nF, use 3 from voltage multiplying rectifier unit.From voltage multiplying rectifier
It is also parallel with triode control system 6 on circuit, for avoiding overtension, insulating film is punctured.From voltage doubling rectifing circuit
It is additionally provided with a switching switch 1 between the electrode of TENG, the company between two output ends and two electrodes can be switched
Connect relationship.
Using the above scheme, self charge Exciting-simulator system structure of the invention designs so that generator is in contact separation driving method
Under with the increased speed of index, rapidly generate the high charge density much larger than tradition TENG and exchange and export, and with one
Simple structure.
In embodiment, foam is fixed on liquid cushion by golden finger double-sided adhesive, and liquid cushion is double by golden finger
Face adhesive tape is fixed on acrylic substrate 11.Flexible silica gel is adhered on foam using itself adhesion property, and electrode 3 is adhered to soft
On property silica gel.Polyimides film edge is fixed to be attached in aluminium electrode 3 by golden finger adhesive tape bonding, with 3 center of electrode
Alignment.Electrode 2 is fixed on acrylic substrate 11 by golden finger double faced adhesive tape.In the above scheme, elastic polyurethane foam
It is 5-45Psi with flexible silica gel shore hardness.
In order to test the output performance of generator, with linear motor under simple harmonic oscillation mode driven generator, use simultaneously
Keithley electrometer (Keithley 6514) and the desk-top multimeter of Keithley seven and half (Keithley DMM7510) measurement power generation
Machine output performance.
As shown in Fig. 4 A-I, TENG area is 10cm2When output data figure, by charge drive in non-pressure stabilizing and
Main TENG effective charge density has reached 0.83mC m under 1Hz driving frequency-2(Fig. 4 A), main TEGN effective charge is close in Fig. 4 B-C
Degree has reached 0.72mC m-2Under 1Hz driving frequency and pressure stabilizing, Fig. 4 E and Fig. 4 F are illustrated in 4Hz driving frequency and pressure stabilizing
The short circuit current and voltage of main TEGN, electric current and voltage all maintain a stable output, have respectively reached 187mAm-2With
622V needs exist for the presence for illustrating to need to have electric current in circuit due to self-excitation process, and voltage here is in external 10M
The lower measurement of Ω load 19 obtains.Fig. 4 G illustrates pressure stabilizing and non-pressure stabilizing effective charge density as the increase of frequency is linearly dropped
It is low, it is bigger to show charge and discharge time longer effective charge density；When Fig. 4 H shows pressure stabilizing, with the increase electric current of driving frequency
It is consequently increased with voltage, 233mA m has been respectively reached in 6Hz-2And 630V.Fig. 4 I shows the generator when load is 4M Ω
There is peak power output 35.9Wm-2。
Through overtesting, 20 have been directly driven in black and white environment respectively with generator obtained in embodiment 1
Concatenated 10mm diameter LED light, has issued macroscopic white light.340 concatenated 5mm diameter LED can also be driven simultaneously
Lamp, and have issued more bright lamplight.
It is charged after rectification circuit in Fig. 5 A to capacitor with generator obtained in embodiment 1, in 4Hz driving frequency
Under, Fig. 5 B shows that 1 μ F capacitor directly can be charged to 200V by generator in 85 seconds, and Fig. 5 C shows that generator can be
By 22 μ F capacitor chargings to 20V in 100 seconds.
In the above scheme: the triode control system 6 for stablize from the driving voltage that voltage-multiplying circuit generates to certain
One desirable value and prevent excessively high driving voltage from puncturing deielectric-coating, to adapt to general application.The triode control system
For stablizing and controlling the driving voltage that generates from voltage-multiplying circuit both ends, so that the output size of effective regulator generator is realized
Widely application.
In the above scheme: the size of the dielectric insulating film 4 should be greater than the size of electrode 2 and 3, to prevent edge air
Breakdown.Main TENG electrode more effectively can avoid electrode 2 and electrode 3 to deielectric-coating 4 with rounded corner or using circular electrode
Electrical breakdown.
In the above scheme: the main TENG electrode 2 and 3 is connected to two diagonal input terminal Fig. 1 from voltage-multiplying circuit
At black dot.In order to facilitate understanding that we select one from voltage-multiplying circuit unit (Fig. 3 A) and explain its working principle.From electricity
As shown in Figure 3A in one cycle, in order to which charge can effectively be accumulated, electrode 3 is connected to upper right corner stain end to lotus, and electrode 2 connects
It connects at lower left corner stain end.It might as well set under original state, there is the initial charge Q that the quantity of electric charge is 2Q in the main TEGN that capacitor is 2CI,
At this point, capacitor is to have quantity of electric charge Q in the capacitor 15 of C accordingly.As shown in Figure 3B, when main TENG separation is larger, in electrostatic
Under power effect main TENG to from voltage-multiplying circuit capacitance group 15 charge, diode 16 is connected at this time, and diode 17 and 18 ends, electric
Appearance group is in series connection, has the quantity of electric charge for being approximately equal to 2Q to flow into capacitance group 15 from main TENG, two capacitors respectively have at this time
The quantity of electric charge of 3Q.In Fig. 3 C, when main TENG contact, diode 17 and 18 is in the conductive state, and diode 16 ends, electric at this time
Appearance group 15 is in parallel connection, and discharges main TENG, will there is total charge dosage Q at this timeTMain TENG electrode is returned to for 3Q > 2Q
In, to generate an exchange output in the loop, driving load 19 motivates charge Q at this timeE=QT-QI=Q > 0 and with electrode 2
Initial charge QIPositive negativity is identical；Under above-mentioned principle, the charge in main TENG increases exponentially form, by contact separation
The automatic switchover of the middle series-parallel state of capacitance group, the charge realized in main TEGN increase.In above process, it is lower than critical electricity
Lotus density has from the maximum density of surface charge in voltage-multiplying circuit both ends driving voltage and main TENG:Wherein σM
It is the density of surface charge in main TENG, d is the thickness of dielectric film 3, εrIt is the relative dielectric constant of dielectric film, ε0It is vacuum dielectric
Constant.As shown in Figure 3D, when charge density is higher than critical charge density in main TENG, due to the effect of strong electrical field, charge will
It can be transferred to 4 upper surface of dielectric film from electrode 2, lead to the generation of invalid charge, effective charge density reaches maximum value at this time, and
Due to since in voltage-multiplying circuit voltage continue increase and start quickly reduce, invalid charge gradually 4 surface of dielectric film accumulation.It is right
There is Q in the total charge dosage returned in main TENG from multiplication of voltage process, each periodT=QE+QI, therefore only as Q in each periodEWith QI
Autoexcitation is just able to achieve when just negativity is identical.After discharging from voltage doubling rectifing circuit, most charges can still be stayed in
4 upper surface of dielectric film, Q when contactEWith QIPositive negativity cannot achieve autoexcitation on the contrary, total electrical charge will gradually decrease；It will open at this time
1 is closed after mode is attached as shown in FIGURE 3 E, Q when contactEWith QIPositive negativity is identical, can realize that self charge motivates again；Thus real
The restarting of generator is showed.
In the above scheme: described different number of unit to be selected as needed to reach faster from voltage doubling rectifing circuit
Charge increase excitation speed, Fig. 1 be 3 from the combination of voltage doubling rectifing circuit unit constitute from voltage doubling rectifing circuit.
In the above scheme: the insulative dielectric film 4 can be placed only in one piece of electrode surface and come reduced thickness and production
Technique, one piece of insulative dielectric film 4 and 15 can also be respectively covered on electrode 2 and 3 carry out guard electrode prevents electrode to be corroded to adapt to
More complicated application environment.
In the above scheme: the dielectric film 4 is thinner, and generator effective charge density is bigger in normal atmospheric environment.
In the above scheme: the electrode 2 and 3 can be metal electrode and be also possible to the non-gold such as graphite, conducting polymer
Belong to conductive material.
In the above scheme: the insulative dielectric film 4 can be the higher plastic foil of dielectric strength and thickness is suitably brilliant
The dielectric materials such as body film block.
In the above scheme: the sum of 8 element leakage current of the capacitor from voltage-multiplying circuit 7 and rectifier diode should be less than certainly
The average current of charge drive friction generator, so as to realize effective self charge accumulation.
Self charge self charge self charge self charge is in the above scheme: the substrate 9 is hard insulation or with metal
The rigid insulation composite material of substrate.
It is another embodiment of the present invention shown in Fig. 2, it is similar to Example 1, the difference is that, by triode pipe therein
Control system replacement is zener diode system 5, is connected with the rectifying tube 5 of two model HER104 300V and is reversely connected pressure stabilizing later.
Claims (11)
1. a kind of self charge motivates friction generator, including TENG, the TENG to have first electrode and second electrode, it is covered on
Insulative dielectric film in first electrode and/or second electrode, it is characterised in that: further include thering is diode and capacitor to constitute from again
Voltage rectifier and to the voltage regulator circuit for carrying out voltage regulator from voltage doubling rectifing circuit, the main TENG first electrode and the
Two electrodes are connected to the two diagonal input terminals from voltage-multiplying circuit.
2. self charge according to claim 1 motivates friction generator, it is characterised in that: the voltage regulator circuit for regulating and controlling
Including zener diode or triode control system.
3. self charge according to claim 1 or 2 motivates friction generator, it is characterised in that: in the first electrode and
Second electrode and be respectively correspondingly connected with from switch is equipped between voltage-multiplying circuit input terminal, the switch can switch from times piezoelectricity
Connection relationship between road input terminal and first electrode and second electrode.
4. self charge according to claim 1 or 2 motivates friction generator, it is characterised in that: the generator further includes
Substrate is mounted on the outside of first electrode and second electrode, an electrode in the substrate and the first, second electrode it
Between be additionally provided with composite fluid cushion.
5. self charge according to claim 4 motivates friction generator, it is characterised in that: the composite fluid cushion is by layer
The liquid cushion stacked, elastic polyurethane foamed cotton layer and flexible layer of silica gel composition, wherein liquid cushion is by closed rubber jar
It is constituted with its internal liquid filled, elastic polyurethane foam and flexible silica gel shore hardness are 5-45Psi.
6. self charge according to claim 1 or 2 motivates friction generator, it is characterised in that: the dielectric insulating film
Size is greater than the size of electrode.
7. self charge according to claim 1 or 2 motivates friction generator, it is characterised in that: first and second electricity
The material of pole is metal or graphite, conducting polymer, non-metallic conducting material.
8. self charge according to claim 1 or 2 motivates friction generator, it is characterised in that: the insulative dielectric film is
Plastic foil or crystal film.
9. self charge according to claim 1 or 2 motivates friction generator, it is characterised in that: described from voltage-multiplying circuit
The sum of capacitor and rectifier diode element leakage current are less than the average current of self charge excitation friction generator.
10. self charge according to claim 4 motivates friction generator, it is characterised in that: the substrate is rigid insulation
Material or rigid insulation composite material with metallic substrates.
11. a kind of equipment of the self charge excitation friction generator comprising one of power 1 to 10, equipment includes: that portable electronic fills
Electric equipment is placed in environment the energy absorption device of collecting mechanical energy or from drive environment monitoring device.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111446882A (en) * | 2020-03-07 | 2020-07-24 | 重庆大学 | Composite flexible carbon gel electrode for friction generator and preparation method thereof |
| CN113315407A (en) * | 2021-05-13 | 2021-08-27 | 清华大学 | Electric energy receiving and transmitting system based on friction nanometer generator |
| CN113472235A (en) * | 2021-08-09 | 2021-10-01 | 重庆大学 | Inverter friction generator based on triboelectric effect and air breakdown coupling |
| CN113541524A (en) * | 2021-08-02 | 2021-10-22 | 重庆大学 | Friction nanometer generator based on suspension sliding type charge self-excitation |
| CN113595433A (en) * | 2021-07-08 | 2021-11-02 | 浙江师范大学 | Dielectric elastomer energy collection system and method |
| CN113794396A (en) * | 2021-07-20 | 2021-12-14 | 浙江大学 | Friction nanometer generator with slit effect for efficiently collecting wind energy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111446882A (en) * | 2020-03-07 | 2020-07-24 | 重庆大学 | Composite flexible carbon gel electrode for friction generator and preparation method thereof |
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| CN113315407A (en) * | 2021-05-13 | 2021-08-27 | 清华大学 | Electric energy receiving and transmitting system based on friction nanometer generator |
| CN113595433A (en) * | 2021-07-08 | 2021-11-02 | 浙江师范大学 | Dielectric elastomer energy collection system and method |
| CN113794396A (en) * | 2021-07-20 | 2021-12-14 | 浙江大学 | Friction nanometer generator with slit effect for efficiently collecting wind energy |
| CN113794396B (en) * | 2021-07-20 | 2024-06-04 | 浙江大学 | Friction nano generator with slit effect for efficiently collecting wind energy |
| CN113541524A (en) * | 2021-08-02 | 2021-10-22 | 重庆大学 | Friction nanometer generator based on suspension sliding type charge self-excitation |
| CN113541524B (en) * | 2021-08-02 | 2022-11-22 | 重庆大学 | Friction nanometer generator based on suspension sliding type charge self-excitation |
| CN113472235A (en) * | 2021-08-09 | 2021-10-01 | 重庆大学 | Inverter friction generator based on triboelectric effect and air breakdown coupling |
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