CN207559699U - A kind of magnetic coupling parallel resonance formula wireless electric energy transmission device - Google Patents
A kind of magnetic coupling parallel resonance formula wireless electric energy transmission device Download PDFInfo
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- CN207559699U CN207559699U CN201721412172.5U CN201721412172U CN207559699U CN 207559699 U CN207559699 U CN 207559699U CN 201721412172 U CN201721412172 U CN 201721412172U CN 207559699 U CN207559699 U CN 207559699U
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Abstract
The utility model is related to a kind of magnetic coupling parallel resonance formula wireless electric energy transmission devices, and there are three parts to be formed, and 1, power module;2, frequency following inverter circuit module;3, EMR electromagnetic resonance system in parallel.Employ a kind of frequency following high-frequency inverter circuit, the drive signal of the inverter circuit switching tube is generated by circuit itself, without high-frequency signal generation module, and reverse frequency can follow the natural resonance frequency of the LC networks in parallel of output terminal automatically, whole system always works in resonant condition, detuning system is prevented without designing, so as to efficiently solve the problems, such as the frequency-tracking in magnetic coupling resonator system, and whole system is simple in structure, and cost is relatively low.
Description
Technical field
The invention belongs to wireless power transmission technical fields, are related to a kind of magnetic coupling parallel resonance formula wireless power transmission dress
It puts, and in particular to a kind of magnetic coupling parallel resonance formula wireless electric energy transmission device based on frequency following high-frequency inverter circuit is set
Meter.
Background technology
Radio energy transmission system does not need to can be carried out electric energy transmission by medium of cable, has obtained recent years
Quick development.Three kinds of radio energy transmission systems of mainstream are induction, microwave type and magnetic coupling in society at present
Resonant mode.Wherein magnet coupled resonant type long transmission distance, transimission power and efficiency are all higher, have started research boom in recent years.
Magnet coupled resonant type is that covibration is applied on the basis of electromagnetic induction principle, so as to realize longer-distance power
Transmission, generally higher than 30cm, and have good penetrability, energy only transmits in resonator system, to the object except resonator system
Body is without influence.The magnet coupled resonant type wireless power transfer mentality of designing in society is at present:A high frequency is designed first
AC power, the mode that design bridge inverter main circuit may be used either obtain high frequency to high frequency small-signal progress power amplification
AC power, then redesigns Electro-magnetic Launcher System and electromagnetism receives system, controls the frequency of high-frequency ac power, Electromagnetic Launching
The resonant frequency three that system resonance frequencies receive system with electromagnetism is identical, while is the stability of guarantee system, also to design
Frequency servo system, the resonant frequency of moment detection EMR electromagnetic resonance system make the frequency of high frequency electric source and EMR electromagnetic resonance system
Resonant frequency, prevent detuning.The design of radio energy transmission system, but whole device can be realized according to more than design procedure
There are many component, system complex, larger, and design cost is high.Wherein anti-detuning system, the design of closed loop frequency tracking system,
Difficulty is larger, and system job stability is difficult to ensure that, and many magnet coupled resonant type wireless electric energy transmission systems are designed to more
Serial-resonant, it is rare to use parallel resonance.
Invention content
Technical problems to be solved
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of magnetic coupling parallel resonance formula wireless power transmission
Device.
Technical solution
A kind of magnetic coupling parallel resonance formula wireless electric energy transmission device, it is characterised in that including power module, frequency following
Inverter circuit module and EMR electromagnetic resonance system in parallel;The frequency following inverter circuit module includes two identical MOS pipes Q1
And Q2, inductive choke coil RFC1 and RFC2, clamp diode D3And D4, biasing resistor R1, R2, R3And R4;The parallel connection electromagnetism is humorous
Vibrating system includes L1, C1 and L2, C2;Specifically connection relation is:Both ends of power four series circuits of parallel connection:R1With R2Series connection, R3With
R4Series connection, RFC1 connect with metal-oxide-semiconductor Q1, and RFC2 connects with metal-oxide-semiconductor Q2, D1For the parasitic diode of metal-oxide-semiconductor Q1, D2For metal-oxide-semiconductor
The parasitic diode of Q2;The gate pole and R of metal-oxide-semiconductor Q11With R2The midpoint connection of series circuit, the gate pole and R of metal-oxide-semiconductor Q23With R4
The midpoint connection of series circuit, clamp diode D3Drain electrode with metal-oxide-semiconductor Q2 is connect, clamp diode D4With the leakage of MOS pipes Q1
Pole connects, and L1 inductance is connect with after C1 capacitance parallel connections with the drain electrode of metal-oxide-semiconductor Q1 and the drain electrode of metal-oxide-semiconductor Q2, L2 inductance and C2 capacitances
It is connected after parallel connection with load;The D1And D2Parasitic diode for metal-oxide-semiconductor Q1 and Q2;The diode D3And D4Using identical
Diode;The high-frequency inductor choke coil RFC1And RFC2Using identical high-frequency inductor choke coil;The R2With R4Resistance value
It is identical;The L1 inductance is identical with L2 inductance inductance value;The C1 capacitances are identical with C2 capacitor's capacities.
Described two identical metal-oxide-semiconductor Q1 and Q2 use silicon carbide switches pipe C2M0040120D.
The diode D3And D4Using diode 1N4148.
The C1 capacitances and C2 capacitances use identical CBB electric capacity.
The R1With R3Resistance value be all mutually 200 ohm.
Advantageous effect
A kind of magnetic coupling parallel resonance formula wireless electric energy transmission device proposed by the present invention, there are three parts to be formed, and 1, electricity
Source module;2, frequency following inverter circuit module;3, EMR electromagnetic resonance system in parallel.Employ a kind of frequency following high-frequency inversion electricity
Road, the drive signal of the inverter circuit switching tube are generated by circuit itself, without high-frequency signal generation module, and reverse frequency
The natural resonance frequency of the LC networks in parallel of output terminal can be followed automatically, and whole system always works in resonant condition, without setting
Meter prevents detuning system, so as to efficiently solve the problems, such as the frequency-tracking in magnetic coupling resonator system, and whole system structure
Simply, cost is relatively low.
1, do not need to closed loop frequency control.Magnet coupled resonant type wireless electric energy transmission system common at present, it is typically sharp
The high-frequency alternating current of a high intensity light source generation certain frequency is designed with high-frequency inverter circuit, makes the frequency of high-frequency alternating current
The resonant frequency that system is received with Electro-magnetic Launcher System resonant frequency and electromagnetism is identical, but also want design frequency detection device with
Closed loop frequency control system makes the signal source frequency moment follow EMR electromagnetic resonance system frequency, prevents detuning, apparatus structure complexity,
Of high cost, volume is big.The present invention high-frequency inverter circuit generate high-frequency ac power frequency always with Electro-magnetic Launcher System
Resonant frequency is identical, does not need to design frequency closed-loop control system, and circuit structure is very simple.
2, it does not need to generate high-frequency signal generation device.Either bridge type inverting power supply or E power-like amplifiers all needs
One or more high-frequency signal is generated to control turning on and off for switching tube, the drive signal of switching tube of the invention is by electricity
Road generates in itself, without outer signal source, reduces circuit cost, reduces structure complexity.
3, circuit structure is simple, at low cost.
Description of the drawings
Fig. 1:Radio energy transmission system structure chart;
Fig. 2:Radio energy transmission system physical circuit design drawing figure;
Fig. 3:Wireless power transmission equivalent topologies figure.
Specific embodiment
In conjunction with embodiment, attached drawing, the invention will be further described:
Part is formed there are three the present invention is main, and 1, power module;2, frequency following inverter circuit module;3, electromagnetism in parallel
Resonator system.Overall system architecture figure is referring to attached drawing 1, and the magnetic coupling parallel resonance formula wireless electric energy transmission device is mainly by power supply
Module, inverter circuit module and EMR electromagnetic resonance system composition in parallel.Attached drawing 2 be the present invention physical circuit design, system it is each
Partial corresponding circuits can be found in attached drawing 2.
External input 24V direct currents are the power power-supplies of the present invention.
Frequency following inverter topology such as Fig. 2, the high-frequency inverter circuit are powered by external dc power, using two phases
Same metal-oxide-semiconductor Q1And Q2, RFC1And RFC2It is inductive choke coil, is equivalent to constant-current source.Metal-oxide-semiconductor structure is variant, simultaneously as two
Pole pipe D3, D4Clamping action, make the two metal-oxide-semiconductors can not possibly and meanwhile it is open-minded, can be only under complementary duty state, with for the moment
It inscribes, one is in opening state, then another is off state, D1, D2It is the parasitic diode of metal-oxide-semiconductor.Do not consider first
Electromagnetism receives system, works as Q1Manage open-minded, Q2When pipe turns off, D at this time3Shutdown, D4It is open-minded, RFC2To L1, C1Series resonant network is filled
Electricity, L1, C1Resonance occurs, works as C1Both end voltage UC1By positive voltage first increases and then decreases when resonance is zero or is lower, diode
D3It is open-minded, by Q1Gate potentials drag down, Q1It turns off, therewith diode D4It is also switched off, Q2Gate potentials increase, Q2It is open-minded, RFC1
Start L1, C1Series resonant network reverse charging, at this time C1Both end voltage UC1It is negative, works as UC1By negative voltage, resonance is 0V again
When, diode D4It is open-minded, diode D3Shutdown, makes Q2Shutdown, Q1It is open-minded, complete a harmonic period.According to the above-mentioned course of work
It is found that the reverse frequency of the circuit depends on L1, C1The resonant frequency of resonant network, and follow matching Electro-magnetic Launcher System automatically
Intrinsic frequency, it is only necessary to the resonant frequency for making reception system is consistent with the resonant frequency of emission system, and system can generate humorous
It shakes.
EMR electromagnetic resonance system in parallel is referring to Fig. 2, mainly by L1, C1And L2, C2Series resonant network is formed, power power-supply mould
Block and frequency following inverter circuit module can be equivalent to ac current source, and system can be equivalent into attached drawing 3 at this time, the I in attached drawing 3s
It is made of the power power-supply module in attached drawing 2 and frequency following inverter circuit module.
In specific embodiment:
Power module is mainly the driving power source of the present invention, and external input 24V DC power supplies are the power electricity of the present invention
Source.
In frequency following inverter circuit, the requirement of selecting switch pipe is the working frequency according to radio energy transmission system,
Here metal-oxide-semiconductor uses silicon carbide switches pipe C2M0040120D, D3And D4Using diode 1N4148, RFC1And RFC2It is identical
High-frequency inductor choke coil, L1And L2It is identical inductive emitter coil, C1, C2Using the CBB electric capacity of identical capacitance, R1With R3Resistance
Value is all mutually 200 ohm, R2With R4Resistance value is all mutually 2000 ohm.Specific implementation process is as follows:
After power supply electrifying, Q1, Q2Circuit structure it is full symmetric, but because of Q1, Q2Chip differences, two switching tubes can not
It can simultaneously turn on.Assuming that Q1Manage open-minded, Q2When pipe turns off, D at this time3Shutdown, D4It is open-minded, RFC2To L1, C1Series resonant network is filled
Electricity, L1, C1Resonance occurs, works as C1When both end voltage resonance is zero or is lower, diode D3 is open-minded, by Q1Gate potentials drag down,
Q1It turns off, therewith diode D4It is also switched off, Q2Gate potentials increase, Q2It is open-minded, RFC1Start L1, C1Series resonant network is reversely filled
Electricity, at this time C1Both end voltage UC1It is negative, works as UC1When resonance is 0V again, diode D4Open-minded, diode D3 shutdowns make Q2It closes
It is disconnected, Q1It is open-minded, complete a work period.
Circuit stability work when, Electro-magnetic Launcher System both end voltage be high-frequency ac voltage, alternating current voltage frequency C1With
L1Parallel resonance frequency,Realize frequency following, electric energy transmission process as shown in figure 3, the present invention
Power power-supply and inverter circuit can be equivalent into a high-frequency ac current source, and high-frequency ac power follows transmitting and receives system automatically
The resonant frequency of system makes transmitting coil L1With C1Resonance, transmitting coil L2With C2Resonance, the magnetic field generated between coil is most strong, leads to
Magnetic coupling effect is crossed, energy is transmitted to receiving terminal from transmitting terminal.
Claims (5)
1. a kind of magnetic coupling parallel resonance formula wireless electric energy transmission device, it is characterised in that inverse including power module, frequency following
Become circuit module and EMR electromagnetic resonance system in parallel;The frequency following inverter circuit module include two identical metal-oxide-semiconductor Q1 and
Q2, inductive choke coil RFC1 and RFC2, clamp diode D3And D4, biasing resistor R1, R2, R3And R4;The parallel connection EMR electromagnetic resonance
System includes inductance L1, capacitance C1 and inductance L2, capacitance C2;Specifically connection relation is:Both ends of power four series circuits of parallel connection:
R1With R2Series connection, R3With R4Series connection, RFC1 connect with metal-oxide-semiconductor Q1, and RFC2 connects with metal-oxide-semiconductor Q2, D1Two pole of parasitism for metal-oxide-semiconductor Q1
Pipe, D2Parasitic diode for metal-oxide-semiconductor Q2;The gate pole and R of metal-oxide-semiconductor Q11With R2The midpoint connection of series circuit, the door of metal-oxide-semiconductor Q2
Pole and R3With R4The midpoint connection of series circuit, clamp diode D3Drain electrode with metal-oxide-semiconductor Q2 is connect, clamp diode D4With MOS
The drain electrode connection of pipe Q1, inductance L1 are connect with after capacitance C1 parallel connections with the drain electrode of metal-oxide-semiconductor Q1 and the drain electrode of metal-oxide-semiconductor Q2, inductance L2
It is connected after in parallel with capacitance C2 with load;The D1And D2Parasitic diode for metal-oxide-semiconductor Q1 and Q2;The diode D3And D4
Using identical diode;The inductive choke coil RFC1And RFC2Using identical high-frequency inductor choke coil;The R2With R4Resistance
It is worth identical;The inductance L1 is identical with inductance L2 inductance value;The capacitance C1 is identical with capacitance C2 capacitances.
2. magnetic coupling parallel resonance formula wireless electric energy transmission device according to claim 1, it is characterised in that:Described two phases
Same metal-oxide-semiconductor Q1 and Q2 uses silicon carbide switches pipe C2M0040120D.
3. magnetic coupling parallel resonance formula wireless electric energy transmission device according to claim 1, it is characterised in that:The diode
D3And D4Using diode 1N4148.
4. magnetic coupling parallel resonance formula wireless electric energy transmission device according to claim 1, it is characterised in that:The capacitance C1
Identical CBB electric capacity is used with capacitance C2.
5. magnetic coupling parallel resonance formula wireless electric energy transmission device according to claim 4, it is characterised in that:The resistance R1
With resistance R3Resistance value be all mutually 200 ohm.
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Cited By (1)
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CN107612160A (en) * | 2017-10-27 | 2018-01-19 | 西北工业大学 | A kind of magnetic coupling parallel resonance formula wireless electric energy transmission device |
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CN107612160A (en) * | 2017-10-27 | 2018-01-19 | 西北工业大学 | A kind of magnetic coupling parallel resonance formula wireless electric energy transmission device |
CN107612160B (en) * | 2017-10-27 | 2023-08-18 | 西北工业大学 | Magnetic coupling parallel resonance type wireless power transmission device |
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