CN109038854A - A kind of automatic tuning wireless energy transmission system based on inductance compensation - Google Patents
A kind of automatic tuning wireless energy transmission system based on inductance compensation Download PDFInfo
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- CN109038854A CN109038854A CN201810888677.1A CN201810888677A CN109038854A CN 109038854 A CN109038854 A CN 109038854A CN 201810888677 A CN201810888677 A CN 201810888677A CN 109038854 A CN109038854 A CN 109038854A
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- 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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- 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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/30—Circuit arrangements or systems for wireless supply or distribution of electric power using light, e.g. lasers
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Abstract
A kind of automatic tuning wireless energy transmission system based on inductance compensation of the invention belongs to the technical field of electronic technology, its structure has ac-dc converter circuit (1), high-frequency inverter circuit (2), inductively compensated circuit (3), ON-OFF control circuit (4), single-chip microcontroller (5), amplitude detection circuit (6), analog to digital conversion circuit (7).The present invention has that adaptive load range is wide, efficiency of transmission is high, using flexible, system stability and high reliability.
Description
Technical field
The invention belongs to the technical fields of electronic technology.In particular to a kind of wireless energy of tuning automatically based on inductance compensation
Measure emission system.
Background technique
After entering human lives from electric power, electric wire is nearly ubiquitous as the medium of transmission electric energy, for our life
It is daily to bring many conveniences.But wired energy transmission mode can be limited to space hold, electrical equipment contact brings potential peace
The problems such as full hidden danger.And there is no directly electrical connections, it can be achieved that wireless device is not limited by space in wireless energy transfer system
The energy supply of system, and have without patch link, without bare exposed conductor, without advantages such as electric leakage electric shock danger.Unquestionably, radio
It can transmit and just gradually be played in the charging or power supply of the electrical equipments such as electric car, mobile phone, tablet computer, biomedicine
Increasingly important role.
In wireless charging technology, the mode of magnetic coupling resonance is because of the advantages that its efficiency of transmission is high, power is big, structure facilitates
And by extensive concern.Its principle is first that the commercial power rectification of 220V/50Hz is electric at DC voltage-stabilizing, then by high-frequency inverter circuit inversion
At the high-frequency alternating current of 50kHz, transmitting coil (being in inductive) cooperation capacitor appropriate carries out frequency-selecting resonance, converts electric energy to
Magnetic energy, then energy is received by receiving coil by way of magnetic coupling resonance, finally again by the subsequent rectifying and wave-filtering of receiving coil
The received energy of coil is converted into constant pressure to circuit or constant current is that the equipment of receiving end is powered or is that battery charges.
In order to guarantee the necessary resonance of primary circuit where efficiency of transmission and power, above system require transmitting coil, receiving coil institute
Secondary loop also want resonance.It is well known that primary is returned in secondary loop when transmitting coil and receiving coil are coupled
Road can have an impact, and influence equivalent can be connected in primary circuit at a reflected umpedance, which includes reflection electricity
Resistance and reflected reactance, wherein reflected reactance (in inductive or capacitive character) can generate serious shadow to the resonance degree of primary circuit
It rings, therefore the parameter influence of reception system must be examined when designing emission system.
Current magnetic coupling resonance wireless transmitting system is typically directed to what fixed reception circuit was designed, once
When the parameter in reception circuit changes, equivalent reflected umpedance can also change in launching circuit, be transmitted back to originally
The resonant state on road will be destroyed, and detuning phenomenon occur, lead to the important ginseng such as electric current, power, efficiency of launching circuit
Number is deteriorated rapidly.Even and if in fact in of a sort electrical equipment, receive circuit also due to product type, factory
The difference of family and parameter is different, therefore existing wireless energy transfer system compatible generally existing poor compatibility is asked at present
Topic, the product that an emission system is only the same certain fixing model provide energy transmission.
To sum up, in order to widen the adaptation range to different electricity consumption products, the compatibility of system is improved, guarantees the transmission of system
Efficiency, existing wireless energy transfer system also need to improve.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of based on inductance compensation for disadvantage of the existing technology
Automatic tuning wireless energy transmission system.The system can be according to the difference for receiving circuit, the ginseng of adjust automatically launching circuit
Number, to achieve the purpose that the different load of Auto-matching, improve efficiency of transmission.
The purpose of the present invention is achieved through the following technical solutions:
A kind of automatic tuning wireless energy transmission system based on inductance compensation, structure have, ac-dc converter circuit 1,
High-frequency inverter circuit 2, single-chip microcontroller 5, which is characterized in that structure is in addition, inductively compensated circuit 3, ON-OFF control circuit 4, amplitude inspection
Slowdown monitoring circuit 6, analog to digital conversion circuit 7；The input terminal of the ac-dc converter circuit 1 is electrically connected with city, ac-dc converter circuit 1
Output end be connected with the power input of high-frequency inverter circuit 2, the sampling output end of high-frequency inverter circuit 2 and amplitude detection electricity
The input terminal on road 6 is connected, and the output end of amplitude detection circuit 6 is connected with the input terminal of analog to digital conversion circuit 7, analog to digital conversion circuit
7 output end is connected with single-chip microcontroller 5, single-chip microcontroller 5 also respectively with the control signal and ON-OFF control circuit of high-frequency inverter circuit 2
4 input terminal is connected, the output end of ON-OFF control circuit 4 respectively with the input terminal of inductively compensated circuit 3, amplitude detection circuit 6
Enabled control terminal be connected, the output end of inductively compensated circuit 3 is connected with the compensation input terminal of high-frequency inverter circuit 2；
The structure of the high-frequency inverter circuit 2 is that the anode of diode D1 is connected with the power supply of+12V, diode D1's
Cathode is connected with one end of one end of resistance R1, the emitter of triode Q1 and capacitor C1, the other end of resistance R1 and three poles
The base stage of pipe Q1 and the collector of triode Q2 are connected, and the base stage of triode Q2 is connected with one end of resistance R2, and resistance R2's is another
One end+5V DC power supply is connected, and the emitter of triode Q2 is connected with one end of resistance R3, and the other end of resistance R3 is as high frequency
First control signal of inverter circuit 2, is denoted as port MCU-in1, is connected with single-chip microcontroller 5, the collector of triode Q1 with
One end of the anode of diode D2, the base stage of triode Q3 and resistance R4 is connected, and the other end of resistance R4 is another with capacitor C1's
End, the collector of triode Q3, the anode of zener diode D3, the drain electrode of field-effect tube Q8, one end of inductance L and field-effect tube
The source electrode of Q4 is connected, emitter and the cathode of diode D2, the cathode and field-effect tube Q4 of zener diode D3 of triode Q3
Grid be connected, the drain electrode of field-effect tube Q4 is connected with the drain electrode of field-effect tube Q9, the power input as high-frequency inverter circuit 2
End, is denoted as port Vs-in, is connected with the DC voltage output end of ac-dc converter circuit 1, the grid and resistance of field-effect tube Q8
One end of R8 and the collector of triode Q7 are connected, and the other end of resistance R8 is connected with the collector of triode Q5, triode Q5
Emitter be connected with one end of resistance R5 and+12V DC power supply, the other end of resistance R5 and the base stage of triode Q5 and three poles
The collector of pipe Q6 is connected, and the base stage of triode Q6 is connected with one end of resistance R6, the other end and the+5V power supply phase of resistance R6
Even, the emitter of triode Q6 is connected with one end of resistance R7, and the other end of resistance R7 is connected with one end of resistance R9, as height
Second control signal of frequency inverter circuit 2, is denoted as port MCU-in2, is connected with single-chip microcontroller 5, the other end of resistance R9 with
The base stage of triode Q7 is connected, and the emitter of triode Q7 is connected and is grounded with the source electrode of field-effect tube Q8, the other end of inductance L
It is connected with one end of capacitor Cs1, the other end of capacitor Cs1 is connected with one end of capacitor Cs2, and the other end of capacitor Cs2 is as high
One compensation input terminal of frequency inverter circuit 2, is denoted as port Ladj-in1, the port Ladj-out1 phase with inductively compensated circuit 3
Even；Another compensation input terminal of one end of sample resistance Rs as high-frequency inverter circuit 2, while being also used as high-frequency inverter circuit
A 2 sampling output end, is denoted as port Rs-out1, which is connected with the port Ladj-out2 of inductively compensated circuit 3, also
It is connected with the port Rs-in1 of amplitude detection circuit 6, drain electrode, the field-effect of the other end and field-effect tube Q13 of sample resistance Rs
One end phase of the source electrode of pipe Q9, the anode of zener diode D4, the collector of triode Q10, one end of resistance R10 and capacitor C2
Even, as another sampling output end of high-frequency inverter circuit 2, it is denoted as port Rs-out2, the port with amplitude detection circuit 6
Rs-in2 is connected, grid and the cathode of zener diode D4, the emitter of triode Q10 and the diode D5 of field-effect tube Q9
Cathode is connected, the base stage and the collector phase of the other end of resistance R10, the anode of diode D5 and triode Q11 of triode Q10
Even, the emitter of triode Q11 is connected with the cathode of the other end of capacitor C2, one end of resistance R11 and diode D6, diode
The anode of D6 is connected with+12V DC power supply, the current collection of the base stage of triode Q11 and the other end of resistance R11 and triode Q12
Extremely it is connected, the base stage of triode Q12 is connected with one end of resistance R12, and the other end of resistance R12 is connected with+5V DC power supply, and three
The emitter of pole pipe Q12 is connected with one end of resistance R13, and the other end of resistance R13 is controlled as the third of high-frequency inverter circuit 2
Input terminal processed is denoted as port MCU-in3, is connected with single-chip microcontroller 5；The emitter phase of the source electrode of field-effect tube Q13 and triode Q14
Connect and be grounded, the grid of field-effect tube Q13 is connected with the collector of one end of resistance R14 and triode Q14, triode Q14's
Base stage is connected with one end of resistance R15, and the other end of resistance R15 is connected with one end of resistance R17, as high-frequency inverter circuit 2
The 4th control signal, be denoted as port MCU-in4, be connected with single-chip microcontroller 5, the other end of resistance R14 and triode Q15's
Collector is connected, and the emitter of triode Q15 is connected with one end of resistance R16 and+12V DC power supply, the base stage of triode Q15
It is connected with the collector of the other end of resistance R16 and triode Q16, the other end phase of the emitter and resistance R17 of triode Q16
Even, the base stage of triode Q16 is connected with one end of resistance R18, and the other end of resistance R18 is connected with+5V DC power supply；
The structure of the amplitude detection circuit 6 is that one end of resistance R19 is connected with the movable contact of relay Ks, as
One input terminal of amplitude detection circuit 6, is denoted as port Rs-in1, is connected with the port Rs-out1 of high-frequency inverter circuit 2；Electricity
The other end of resistance R19 is connected with one end of the non-inverting input terminal of amplifier U1 and resistance R20, the other end ground connection of resistance R20；Relay
The stationary contact of device Ks is connected with one end of resistance R21, as another input terminal of amplitude detection circuit 6, is denoted as port Rs-
In2 is connected with the port Rs-out2 of high-frequency inverter circuit 2；One end of relay coil is grounded, the other end of relay coil
As the enabled control terminal of amplitude detection circuit 6, it is denoted as port Rins, with the 9th relay driving in ON-OFF control circuit 4
The output end of circuit is connected；The other end of resistance R21 is connected with one end of the non-inverting input terminal of amplifier U2 and resistance R22, resistance
The other end of R22 is grounded；One end phase of the reverse side of resistance amplifier U2 and one end of R23, one end of resistance R25 and resistance R24
Even, the other end ground connection of resistance R23, amplifier U2 positive supply input terminal are connected with+5V DC power supply, the negative supply input of amplifier U2
End is connected with -5V DC power supply, and the output end of amplifier U2 is connected with the other end of one end of resistance R26 and resistance R25；Amplifier U1
Inverting input terminal be connected with one end of the other end of resistance R24, the other end of resistance R26 and resistance R27, the negative electricity of amplifier U1
Source input terminal is connected with -5V DC power supply, and the positive supply input terminal of amplifier U1 is connected with+5V DC power supply, the output end of amplifier U
It is connected with the anode of the other end of resistance R27 and diode D7；The cathode of diode D7 and one end of capacitor C3 and resistance R28's
One end is connected, and as the output end of amplitude detection circuit 6, is denoted as port Amp-out, the analog signal with analog to digital conversion circuit 7
Input terminal is connected, the other end of resistance R28 and the other end ground connection of capacitor C3；
The structure of the inductively compensated circuit 3 is that one end of the coil of relay K1, K2, K3, K4, K5, K6, K7, K8 is equal
Ground connection, eight input terminals of the other end as inductively compensated circuit 3, be successively denoted as port Rin1, Rin2, Rin3, Rin4,
Rin5, Rin6, Rin7, Rin8, it is electric with the first relay drive circuit in ON-OFF control circuit 4~the 8th relay driving respectively
Eight output ends on road are connected, and one end of inductance L1, L2, L3, L4, L5 are connected, also with one end of inductance L6 and relay K5
Movable contact is connected, and the other end of inductance L2, L3, L4, L5 are successively connected with the movable contact of relay K1, K2, K3, K4, inductance L1
The other end be connected with the stationary contact of relay K1, K2, K3, K4, as an output end of inductively compensated circuit, be denoted as end
Mouthful Ladj-out1, is connected with the port Ladj-in1 of high-frequency inverter circuit 2, one end of the other end of inductance L6 and inductance L7, after
The movable contact of the stationary contact of electric appliance K5 and relay K6 are connected, one end of the other end of inductance L7 and inductance L8, relay K6
The movable contact of stationary contact and relay K7 are connected, one end of the other end of inductance L8 and inductance L9, the stationary contact of relay K7 and
The movable contact of relay K8 is connected, and the other end of inductance L9 is connected with the stationary contact of relay K8, as inductively compensated circuit 3
Another output is denoted as port Ladj-out2, is connected with the port Rs-out1 of high-frequency inverter circuit 2.
The ON-OFF control circuit 4 is by the first relay drive circuit~the 9th relay drive circuit totally 9 relays
Device driving circuit constitute, wherein the first relay drive circuit~the 8th relay drive circuit output end respectively with inductance
Eight input terminals of compensation circuit 3 are connected, and the output end of the 9th relay drive circuit makes can control with amplitude detection circuit 6
End be connected, the first relay drive circuit~the 9th relay drive circuit input terminal respectively with nine differences of single-chip microcontroller 5
I/O mouth be connected；
First relay drive circuit~the 9th relay drive circuit structure is all the same, and specific structure is,
One end of resistance R29 is connected with+5V DC power supply, and the other end is connected with the anode of light emitting diode in optocoupler U4, in optocoupler U4
Input terminal of the cathode of light emitting diode as relay drive circuit, is denoted as port MCU-in, is connected with single-chip microcontroller 5；Optocoupler
The emitter ground connection of phototriode, collector are connected with one end of one end of resistance R30 and resistance R31 in U4, resistance R30's
The other end of another termination+12V power supply, resistance R31 is connected with the base stage of triode Q17, and the emitter of triode Q17 meets+12V
Power supply, collector are connected with the cathode of diode D8, as the output end of relay drive circuit, are denoted as port Rout, two poles
The plus earth of pipe D8.
In high-frequency inverter circuit 2, the value of inductance L preferred 285uH's, pressure-resistant 400V, capacitor Cs1 and capacitor Cs2 is taken
Value difference preferred 51nF and 110nF, pressure-resistant 400V；
In amplitude detection circuit 6, preferably 1 ohm of the resistance value of sample resistance Rs.
In inductively compensated circuit 3, the value of each inductance is preferably inductance L1:1uH, inductance L2:250nH, inductance L3:
670nH, inductance L4:1.5uH, inductance L5:4uH, inductance L6 and inductance L7:1uH, inductance L8:2uH, inductance L9:5uH；
The ac-dc converter circuit 1 is the prior art, and can be any can be converted into DC voltage for 220V alternating current
The circuit of output, preferably output DC voltage are 200V.
Analog-digital conversion circuit as described 7 is the prior art, is the circuit that can convert analog signals into digital signal.
A kind of bidirectional constant source circuit of the present invention have it is following the utility model has the advantages that
1, the present invention judges system to the resonance degree of load by amplitude detection, and then adjust automatically compensating reactance makes
System is able to maintain real-time resonance when carrying out energy transmission to different reception circuit, substantially increase the working efficiency of system with
And the adaptation range to load.
2, the present invention uses special driving to power tube in high-frequency inverter circuit and designs, and reduces in conversion process
Energy loss, the power and efficiency of whole system can be improved.
3, in inductively compensated circuit, ingehious design inductance compensation network is realized with a small amount of component the present invention
The selection of a variety of different induction values.
4, the present invention is isolated single-chip microcontroller and major loop using optocoupler, in relay drive circuit so that system
Signal electricity and power electricity be independent of each other, improve the stability and reliability of system.
5, the present invention devises enabled control function to sample resistance and amplitude detection circuit, can be with after the completion of initialization
It is detached from sample resistance and amplitude detection circuit and major loop, reduces influence of the sample resistance to major loop in charging process,
Further improve efficiency.
Detailed description of the invention
Fig. 1 is overall structure block diagram of the invention.
Fig. 2 is the functional block diagram of ON-OFF control circuit 4.
Fig. 3 is the basic circuit diagram of high-frequency inverter circuit 2.
Fig. 4 is the basic circuit diagram of amplitude detection circuit 6.
Fig. 5 is the circuit diagram of inductively compensated circuit 3.
Fig. 6 is the basic circuit diagram of relay.
Specific embodiment
The working principle of the invention is described further by specific embodiment with reference to the accompanying drawing, marked in attached drawing
Component parameter be the preferred parameter of each embodiment, but be not to the limitation implemented of the present invention.
The overall structure of the invention of embodiment 1
Overall structure of the invention is as shown in Figure 1, include ac-dc converter circuit 1, high-frequency inverter circuit 2, inductance compensation
Circuit 3, ON-OFF control circuit 4, single-chip microcontroller 5, amplitude detection circuit 6, analog to digital conversion circuit 7；The ac-dc converter circuit 1
Input terminal be electrically connected with city, the output end of ac-dc converter circuit 1 is connected with the power input of high-frequency inverter circuit 2, high
The sampling output end of frequency inverter circuit 2 is connected with the input terminal of amplitude detection circuit 6, the output end and mould of amplitude detection circuit 6
Number conversion circuits 7 input terminal be connected, the output end of analog to digital conversion circuit 7 is connected with single-chip microcontroller 5, single-chip microcontroller 5 also respectively with height
The control signal of frequency inverter circuit 2 is connected with the input terminal of ON-OFF control circuit 4, the output end difference of ON-OFF control circuit 4
Be connected with the enabled control terminal of the input terminal of inductively compensated circuit 3, amplitude detection circuit 6, the output end of inductively compensated circuit 3 with
The compensation input terminal of high-frequency inverter circuit 2 is connected.
The high-frequency inverter circuit of the invention of embodiment 2
The structure of the high-frequency inverter circuit 2 used in the present invention is as shown in figure 3, the anode of diode D1 and the power supply of+12V
It is connected, the cathode of diode D1 is connected with one end of one end of resistance R1, the emitter of triode Q1 and capacitor C1, resistance R1
The other end be connected with the collector of the base stage of triode Q1 and triode Q2, the base stage and one end phase of resistance R2 of triode Q2
Even, the other end+5V DC power supply of resistance R2 is connected, and the emitter of triode Q2 is connected with one end of resistance R3, resistance R3's
First control signal of the other end as high-frequency inverter circuit 2, is denoted as port MCU-in1, is connected with single-chip microcontroller 5, three poles
The collector of pipe Q1 is connected with one end of the anode of diode D2, the base stage of triode Q3 and resistance R4, the other end of resistance R4
With the other end of capacitor C1, the collector of triode Q3, the anode of zener diode D3, the drain electrode of field-effect tube Q8, inductance L
The source electrode of one end and field-effect tube Q4 are connected, emitter and the cathode of diode D2, the yin of zener diode D3 of triode Q3
The grid of pole and field-effect tube Q4 are connected, and the drain electrode of field-effect tube Q4 is connected with the drain electrode of field-effect tube Q9, as high-frequency inversion
The power input of circuit 2 is denoted as port Vs-in, is connected with the DC voltage output end of ac-dc converter circuit 1, field-effect
The grid of pipe Q8 is connected with the collector of one end of resistance R8 and triode Q7, the other end of resistance R8 and the current collection of triode Q5
Extremely it is connected, the emitter of triode Q5 is connected with one end of resistance R5 and+12V DC power supply, the other end of resistance R5 and three poles
The base stage of pipe Q5 and the collector of triode Q6 are connected, and the base stage of triode Q6 is connected with one end of resistance R6, and resistance R6's is another
One end is connected with+5V power supply, and the emitter of triode Q6 is connected with one end of resistance R7, and the other end of resistance R7 is with resistance R9's
One end is connected, and as second control signal of high-frequency inverter circuit 2, is denoted as port MCU-in2, is connected with single-chip microcontroller 5, electricity
The other end of resistance R9 is connected with the base stage of triode Q7, and the emitter of triode Q7 is connected and connects with the source electrode of field-effect tube Q8
The other end on ground, inductance L is connected with one end of capacitor Cs1, and the other end of capacitor Cs1 is connected with one end of capacitor Cs2, capacitor
A compensation input terminal of the other end of Cs2 as high-frequency inverter circuit 2, is denoted as port Ladj-in1, with inductively compensated circuit 3
Port Ladj-out1 be connected；Another compensation input terminal of one end of sample resistance Rs as high-frequency inverter circuit 2, simultaneously
Also as a sampling output end of high-frequency inverter circuit 2, it is denoted as port Rs-out1, the end of the port and inductively compensated circuit 3
Mouth Ladj-out2 is connected, and is also connected with the port Rs-in1 of amplitude detection circuit 6, the other end of sample resistance Rs and field-effect
The drain electrode of pipe Q13, the source electrode of field-effect tube Q9, the anode of zener diode D4, the collector of triode Q10, resistance R10 one
End and one end of capacitor C2 are connected, and as another sampling output end of high-frequency inverter circuit 2, port Rs-out2 are denoted as, with width
The port Rs-in2 for spending detection circuit 6 is connected, the cathode of the grid of field-effect tube Q9 and zener diode D4, triode Q10
The cathode of emitter and diode D5 are connected, the other end of the base stage of triode Q10 and resistance R10, the anode of diode D5 and
The collector of triode Q11 is connected, emitter and the other end of capacitor C2, one end of resistance R11 and the diode of triode Q11
The cathode of D6 is connected, and the anode of diode D6 is connected with+12V DC power supply, and the base stage of triode Q11 is another with resistance R11's
The collector of end and triode Q12 are connected, and the base stage of triode Q12 is connected with one end of resistance R12, the other end of resistance R12
It is connected with+5V DC power supply, the emitter of triode Q12 is connected with one end of resistance R13, and the other end of resistance R13 is as high
The third control signal of frequency inverter circuit 2, is denoted as port MCU-in3, is connected with single-chip microcontroller 5；The source electrode of field-effect tube Q13
It is connected and is grounded with the emitter of triode Q14, the collection of the grid of field-effect tube Q13 and one end of resistance R14 and triode Q14
Electrode is connected, and the base stage of triode Q14 is connected with one end of resistance R15, one end phase of the other end and resistance R17 of resistance R15
Even, as the 4th control signal of high-frequency inverter circuit 2, it is denoted as port MCU-in4, is connected with single-chip microcontroller 5, resistance R14
The other end be connected with the collector of triode Q15, the emitter of triode Q15 and one end of resistance R16 and+12V DC electricity
Source is connected, and the base stage of triode Q15 is connected with the collector of the other end of resistance R16 and triode Q16, the hair of triode Q16
Emitter-base bandgap grading is connected with the other end of resistance R17, and the base stage of triode Q16 is connected with one end of resistance R18, the other end of resistance R18
It is connected with+5V DC power supply.
In the structure, 4 field-effect tube Q4, Q8, Q9, Q13 constitute inversion electric bridge, are used to ac-dc converter circuit 1 is defeated
Direct current signal out is reverse into high frequency ac signal, for providing energy, each effect for transmitting coil (the inductance L i.e. in figure)
Should the grid of pipe additionally use the driving circuit of special designing, the energy attenuation in conversion process can be reduced, guarantee that system can be with
Reach very high output power and efficiency.
The amplitude detection circuit of the invention of embodiment 3
The schematic circuit of amplitude detection circuit 6 of the invention as shown in figure 4, one end of resistance R19 and relay Ks's is dynamic
Contact is connected, and as an input terminal of amplitude detection circuit 6, is denoted as port Rs-in1, the port with high-frequency inverter circuit 2
Rs-out1 is connected；The other end of resistance R19 is connected with one end of the non-inverting input terminal of amplifier U1 and resistance R20, resistance R20's
Other end ground connection；The stationary contact of relay Ks is connected with one end of resistance R21, another input as amplitude detection circuit 6
End, is denoted as port Rs-in2, is connected with the port Rs-out2 of high-frequency inverter circuit 2；One end of relay coil is grounded, relay
Enabled control terminal of the other end of device coil as amplitude detection circuit 6, is denoted as port Rins, in ON-OFF control circuit 4
The output end of 9th relay drive circuit is connected；The other end of resistance R21 and the non-inverting input terminal of amplifier U2 and resistance R22's
One end is connected, the other end ground connection of resistance R22；One end of the reverse side of resistance amplifier U2 and R23, one end of resistance R25 and electricity
The one end for hindering R24 is connected, and the other end ground connection of resistance R23, amplifier U2 positive supply input terminal is connected with+5V DC power supply, amplifier
The negative supply input terminal of U2 is connected with -5V DC power supply, and the output end of amplifier U2 and one end of resistance R26 and resistance R25's is another
One end is connected；One end phase of the inverting input terminal of amplifier U1 and the other end of resistance R24, the other end of resistance R26 and resistance R27
Even, the negative supply input terminal of amplifier U1 is connected with -5V DC power supply, positive supply input terminal and the+5V DC power supply phase of amplifier U1
Even, the output end of amplifier U is connected with the anode of the other end of resistance R27 and diode D7；The cathode and capacitor C3 of diode D7
One end and resistance R28 one end be connected, as the output end of amplitude detection circuit 6, be denoted as port Amp-out, with modulus turn
The input end of analog signal for changing circuit 7 is connected, the other end of resistance R28 and the other end ground connection of capacitor C3；
The detection circuit is used to detect the amplitude of the both ends sample resistance Rs alternating voltage, and testing result is turned by the modulus of rear class
7 reconvert of circuit is changed to store at feeding single-chip microcontroller 5 after digital signal.Sample resistance Rs is used to the master in high-frequency inverter circuit 2
Loop current is converted into voltage, and sample resistance is the precision resistance of one high-power, small resistance value, it is ensured that in the process of sampling
Excessive power will not be consumed.Since sample resistance Rs is located at the output of the electric bridge of high-frequency inverter circuit 2, the electricity at both ends at work
Position highest can reach the size close to Vs (200V or so), therefore the present invention takes decompression and difference to the voltage at the both ends Rs
Processing makes the signal at the both ends Rs be more convenient for amplitude detection.Meanwhile it is more flexible in order to use the present invention, in amplitude detection electricity
Enabled control function also is realized using relay Ks in road 6, in system initialisation phase, in order to detect the resonance feelings of launching circuit
The switch of condition, relay Ks will disconnect, and sample resistance Rs is effective, and amplitude detection circuit 6 is detected, after the initialization is completed
System starts to work normally after choosing suitable compensation inductance according to testing result, due to not needed to be detected again, after
Electric appliance Ks's closes the switch, and sample resistance Rs is shorted out together with subsequent amplitude detection circuit 6, to avoid the course of work
Middle sample resistance continues to consume energy, further improves the efficiency of transmission of system.
The inductively compensated circuit of the invention of embodiment 4
Wherein, the structure of the inductively compensated circuit 3 is as shown in figure 5, relay K1, K2, K3, K4, K5, K6, K7, K8
One end of coil be grounded, eight input terminals of the other end as inductively compensated circuit 3, be successively denoted as port Rin1, Rin2,
Rin3, Rin4, Rin5, Rin6, Rin7, Rin8, respectively with the first relay drive circuit~8th in ON-OFF control circuit 4 after
Eight output ends of electrical apparatus driving circuit are connected, and one end of inductance L1, L2, L3, L4, L5 are connected, also with one end of inductance L6 and
The movable contact of relay K5 is connected, the other end of inductance L2, L3, L4, L5 successively movable contact phase with relay K1, K2, K3, K4
Even, the other end of inductance L1 is connected with the stationary contact of relay K1, K2, K3, K4, an output as inductively compensated circuit
End, is denoted as port Ladj-out1, is connected with the port Ladj-in1 of high-frequency inverter circuit 2, the other end and inductance L7 of inductance L6
One end, the stationary contact of relay K5 and the movable contact of relay K6 be connected, one end of the other end of inductance L7 and inductance L8, after
The movable contact of the stationary contact of electric appliance K6 and relay K7 are connected, one end of the other end of inductance L8 and inductance L9, relay K7
The movable contact of stationary contact and relay K8 are connected, and the other end of inductance L9 is connected with the stationary contact of relay K8, mend as inductance
The another output for repaying circuit 3 is denoted as port Ladj-out2, is connected with the port Rs-out1 of high-frequency inverter circuit 2；The electricity
Road is accessed by selection to different induction, realizes total inductance value using 0.2uH as interval, from the variation of 0.2uH~10uH, with
A small amount of component is that high-frequency inverter circuit 2 provides 50 optional compensation inductance.Adaptive load of the invention has been widened significantly
Range.
The ON-OFF control circuit of the invention of embodiment 5
As shown in Fig. 2, ON-OFF control circuit 4 of the present invention is driven by the first relay drive circuit~the 9th relay
Totally 9 relay drive circuits are constituted dynamic circuit, wherein the first relay drive circuit~the 8th relay drive circuit is defeated
Outlet is connected with eight input terminals of inductively compensated circuit 3 respectively, the output end and amplitude detection of the 9th relay drive circuit
The enabled control terminal of circuit 6 is connected, the first relay drive circuit~the 9th relay drive circuit input terminal respectively with list
The different I/O mouth of nine of piece machine 5 is connected.
The function of ON-OFF control circuit 4 is under the control of single-chip microcontroller in amplitude detection circuit 6 and inductively compensated circuit 3
The switch of each relay carries out drive control, is to realize selection or shield different inductance and span of control limit of control detection circuit 6
No work.The structure of all relay drive circuits is identical, as shown in fig. 6, one end of resistance R29 is connected with+5V DC power supply,
The other end is connected with the anode of light emitting diode in optocoupler U4, and the cathode of light emitting diode is as relay driving electricity in optocoupler U4
The input terminal on road is denoted as port MCU-in, is connected with single-chip microcontroller 5；The emitter ground connection of phototriode, collector in optocoupler U4
It is connected with one end of one end of resistance R30 and resistance R31, another termination+12V power supply of resistance R30, the other end of resistance R31
It is connected with the base stage of triode Q17, the emitter of triode Q17 connects+12V power supply, and collector is connected with the cathode of diode D8,
As the output end of relay drive circuit, it is denoted as port Rout, the plus earth of diode D8.The driving circuit is in single-chip microcontroller
Optocoupler is used between 5 and relay to be isolated, and the high current in relay coil or high-frequency inverter circuit 2 is effectively prevented
Influence to single-chip microcontroller 5.
5 the working principle of the invention of embodiment
It is further described below in conjunction with 1~6 pair of the working principle of the invention of attached drawing and the course of work: in system of the invention
Using transmitting coil (the inductance L i.e. in high-frequency inverter circuit 2) to receiving coil (positioned at the reception circuit for needing to receive energy
In, it is not drawn into figure) before emitted energy, it will do it an initialization procedure first, by 5 control switch control circuit of single-chip microcontroller
4 control inductively compensated circuit 3 in turn, choose a compensation inductance access main circuit, the inductance L of the compensation inductance and transmitting coil
It is overlapped to form total inductance, trial makes circuit reach resonance, and amplitude detection circuit 6 detects the alternating current at the both ends sample resistance Rs
It presses amplitude and digital signal feeding single-chip microcontroller 5 is converted by analog to digital conversion circuit 7 and stored, then single-chip microcontroller 5 controls inductance
Compensation circuit 3 changes the value of compensation inductance, repeats the above process, repeatedly, in the compensation for having attempted all different values
After inductance, single-chip microcontroller 5 is compared all amplitude detection results, with the optimal compensation scheme of determination (when connecing for receiving end
When withdrawing road difference, optimal compensation scheme also can be different).After the completion of initialization procedure, single-chip microcontroller 5 is by optimal compensation inductance
Major loop is selected and accesses, while the relay Ks in span of control limit of control detection circuit 6 makes to close the switch, and makes sample resistance Rs and width
It spends detection circuit 6 and is detached from resonant tank, then to receiving end emitted energy.The initialization procedure is received back system to different
When road carries out energy transmission, it so that launching circuit is in resonant state, can effectively guarantee reach under different loads
Very high transimission power and efficiency.
Claims (4)
1. a kind of automatic tuning wireless energy transmission system based on inductance compensation, structure have, ac-dc converter circuit (1),
High-frequency inverter circuit (2), single-chip microcontroller (5), which is characterized in that structure is in addition, inductively compensated circuit (3), ON-OFF control circuit
(4), amplitude phase-detecting connects, the power input phase tie-in electricity of the output end and high-frequency inverter circuit (2) of ac-dc converter circuit (1)
Road (6), analog to digital conversion circuit (7)；The input terminal and alternating current of the ac-dc converter circuit (1), high-frequency inverter circuit (2)
Sampling output end is connected with the input terminal of amplitude detection circuit (6), the output end and analog to digital conversion circuit of amplitude detection circuit (6)
(7) input terminal is connected, and the output end of analog to digital conversion circuit (7) is connected with single-chip microcontroller (5), single-chip microcontroller (5) also respectively with high frequency
The control signal of inverter circuit (2) is connected with the input terminal of ON-OFF control circuit (4), the output end of ON-OFF control circuit (4)
It is connected respectively with the enabled control terminal of the input terminal of inductively compensated circuit (3), amplitude detection circuit (6), inductively compensated circuit (3)
Output end be connected with the compensation input terminal of high-frequency inverter circuit (2)；
The structure of the high-frequency inverter circuit (2) is that the anode of diode D1 is connected with the power supply of+12V, the yin of diode D1
Pole is connected with one end of one end of resistance R1, the emitter of triode Q1 and capacitor C1, the other end and triode of resistance R1
The base stage of Q1 and the collector of triode Q2 are connected, and the base stage of triode Q2 is connected with one end of resistance R2, and resistance R2's is another
End+5V DC power supply is connected, and the emitter of triode Q2 is connected with one end of resistance R3, and the other end of resistance R3 is inverse as high frequency
First control signal on power transformation road (2), is denoted as port MCU-in1, is connected with single-chip microcontroller (5), the collector of triode Q1
It is connected with one end of the anode of diode D2, the base stage of triode Q3 and resistance R4, the other end of resistance R4 is another with capacitor C1's
One end, the collector of triode Q3, the anode of zener diode D3, the drain electrode of field-effect tube Q8, one end of inductance L and field-effect
The source electrode of pipe Q4 is connected, emitter and the cathode of diode D2, the cathode and field-effect tube of zener diode D3 of triode Q3
The grid of Q4 is connected, and the drain electrode of field-effect tube Q4 is connected with the drain electrode of field-effect tube Q9, the power supply as high-frequency inverter circuit (2)
Input terminal is denoted as port Vs-in, is connected with the DC voltage output end of ac-dc converter circuit (1), the grid of field-effect tube Q8
It is connected with the collector of one end of resistance R8 and triode Q7, the other end of resistance R8 is connected with the collector of triode Q5, and three
The emitter of pole pipe Q5 is connected with one end of resistance R5 and+12V DC power supply, the other end of resistance R5 and the base stage of triode Q5
And the collector of triode Q6 is connected, the base stage of triode Q6 is connected with one end of resistance R6, the other end of resistance R6 and+5V electricity
Source is connected, and the emitter of triode Q6 is connected with one end of resistance R7, and the other end of resistance R7 is connected with one end of resistance R9, makees
For second control signal of high-frequency inverter circuit (2), it is denoted as port MCU-in2, is connected with single-chip microcontroller (5), resistance R9's
The other end is connected with the base stage of triode Q7, and the emitter of triode Q7 is connected and is grounded with the source electrode of field-effect tube Q8, inductance L
The other end be connected with one end of capacitor Cs1, the other end of capacitor Cs1 is connected with one end of capacitor Cs2, and capacitor Cs2's is another
A compensation input terminal as high-frequency inverter circuit (2) is held, is denoted as port Ladj-in1, the end with inductively compensated circuit (3)
Mouth Ladj-out1 is connected；Another compensation input terminal of one end of sample resistance Rs as high-frequency inverter circuit (2), simultaneously also
As a sampling output end of high-frequency inverter circuit (2), it is denoted as port Rs-out1, the port and inductively compensated circuit (3)
Port Ladj-out2 is connected, and is also connected with the port Rs-in1 of amplitude detection circuit (6), the other end of sample resistance Rs and field
The drain electrode of effect pipe Q13, the source electrode of field-effect tube Q9, the anode of zener diode D4, the collector of triode Q10, resistance R10
One end and capacitor C2 one end be connected, as high-frequency inverter circuit (2) another sampling output end, be denoted as port Rs-
Out2 is connected with the port Rs-in2 of amplitude detection circuit (6), the cathode of the grid of field-effect tube Q9 and zener diode D4,
The emitter of triode Q10 and the cathode of diode D5 are connected, the base stage of triode Q10 and the other end, the diode of resistance R10
The collector of the anode of D5 and triode Q11 are connected, and the one of the other end of the emitter of triode Q11 and capacitor C2, resistance R11
The cathode of end and diode D6 are connected, and the anode of diode D6 is connected with+12V DC power supply, the base stage and resistance of triode Q11
The other end of R11 and the collector of triode Q12 are connected, and the base stage of triode Q12 is connected with one end of resistance R12, resistance R12
The other end be connected with+5V DC power supply, the emitter of triode Q12 is connected with one end of resistance R13, and resistance R13's is another
The third control signal as high-frequency inverter circuit (2) is held, port MCU-in3 is denoted as, is connected with single-chip microcontroller (5)；Field effect
Should the source electrode of pipe Q13 be connected and be grounded with the emitter of triode Q14, the grid of field-effect tube Q13 and one end of resistance R14 and
The collector of triode Q14 is connected, and the base stage of triode Q14 is connected with one end of resistance R15, the other end and electricity of resistance R15
The one end for hindering R17 is connected, and as the 4th control signal of high-frequency inverter circuit (2), port MCU-in4 is denoted as, with monolithic
Machine (5) is connected, and the other end of resistance R14 is connected with the collector of triode Q15, and the emitter of triode Q15 is with resistance R16's
One end and+12V DC power supply are connected, the collector phase of the base stage of triode Q15 and the other end of resistance R16 and triode Q16
Even, the emitter of triode Q16 is connected with the other end of resistance R17, and the base stage of triode Q16 is connected with one end of resistance R18,
The other end of resistance R18 is connected with+5V DC power supply；
The structure of the amplitude detection circuit (6) is that one end of resistance R19 is connected with the movable contact of relay Ks, as width
An input terminal for spending detection circuit (6), is denoted as port Rs-in1, is connected with the port Rs-out1 of high-frequency inverter circuit (2)；
The other end of resistance R19 is connected with one end of the non-inverting input terminal of amplifier U1 and resistance R20, the other end ground connection of resistance R20；After
The stationary contact of electric appliance Ks is connected with one end of resistance R21, as another input terminal of amplitude detection circuit (6), is denoted as port
Rs-in2 is connected with the port Rs-out2 of high-frequency inverter circuit (2)；One end of relay coil is grounded, relay coil it is another
Enabled control terminal of the one end as amplitude detection circuit (6), is denoted as port Rins, with the 9th in ON-OFF control circuit (4) after
The output end of electrical apparatus driving circuit is connected；The other end of resistance R21 and the non-inverting input terminal of amplifier U2 and one end phase of resistance R22
Even, the other end ground connection of resistance R22；One end of the reverse side of resistance amplifier U2 and R23, one end of resistance R25 and resistance R24
One end is connected, and the other end ground connection of resistance R23, amplifier U2 positive supply input terminal is connected with+5V DC power supply, the negative electricity of amplifier U2
Source input terminal is connected with -5V DC power supply, and the output end of amplifier U2 is connected with the other end of one end of resistance R26 and resistance R25；
The inverting input terminal of amplifier U1 is connected with one end of the other end of resistance R24, the other end of resistance R26 and resistance R27, amplifier U1
Negative supply input terminal be connected with -5V DC power supply, the positive supply input terminal of amplifier U1 is connected with+5V DC power supply, amplifier U's
Output end is connected with the anode of the other end of resistance R27 and diode D7；The cathode of diode D7 and one end of capacitor C3 and electricity
The one end for hindering R28 is connected, and as the output end of amplitude detection circuit (6), port Amp-out is denoted as, with analog to digital conversion circuit (7)
Input end of analog signal be connected, the other end ground connection of the other end of resistance R28 and capacitor C3；
The structure of the inductively compensated circuit (3) is that one end of the coil of relay K1, K2, K3, K4, K5, K6, K7, K8 connects
Ground, eight input terminals of the other end as inductively compensated circuit (3), be successively denoted as port Rin1, Rin2, Rin3, Rin4,
Rin5, Rin6, Rin7, Rin8, respectively with the first relay drive circuit~the 8th relay driving in ON-OFF control circuit (4)
Eight output ends of circuit are connected, and one end of inductance L1, L2, L3, L4, L5 are connected, also with one end of inductance L6 and relay K5
Movable contact be connected, the other end of inductance L2, L3, L4, L5 are successively connected with the movable contact of relay K1, K2, K3, K4, inductance
The other end of L1 is connected with the stationary contact of relay K1, K2, K3, K4, as an output end of inductively compensated circuit (3),
It is denoted as port Ladj-out1, is connected with the port Ladj-in1 of high-frequency inverter circuit (2), the other end and inductance L7 of inductance L6
One end, the stationary contact of relay K5 and the movable contact of relay K6 be connected, one end of the other end of inductance L7 and inductance L8, after
The movable contact of the stationary contact of electric appliance K6 and relay K7 are connected, one end of the other end of inductance L8 and inductance L9, relay K7
The movable contact of stationary contact and relay K8 are connected, and the other end of inductance L9 is connected with the stationary contact of relay K8, mend as inductance
The another output for repaying circuit (3) is denoted as port Ladj-out2, is connected with the port Rs-out1 of high-frequency inverter circuit (2)；
The ON-OFF control circuit (4) is by the first relay drive circuit~the 9th relay drive circuit totally 9 relays
Driving circuit is constituted, wherein the first relay drive circuit~the 8th relay drive circuit output end is mended with inductance respectively
Eight input terminals for repaying circuit (3) are connected, the output end of the 9th relay drive circuit and the enabled control of amplitude detection circuit (6)
End processed is connected, the first relay drive circuit~the 9th relay drive circuit input terminal nine with single-chip microcontroller (5) respectively
Different I/O mouths is connected；
First relay drive circuit~the 9th relay drive circuit structure is all the same, and specific structure is resistance
One end of R29 is connected with+5V DC power supply, and the other end is connected with the anode of light emitting diode in optocoupler U4, shines in optocoupler U4
Input terminal of the cathode of diode as relay drive circuit, is denoted as port MCU-in, is connected with single-chip microcontroller (5)；Optocoupler U4
The emitter of middle phototriode is grounded, and collector is connected with one end of one end of resistance R30 and resistance R31, and resistance R30's is another
One termination+12V power supply, the other end of resistance R31 are connected with the base stage of triode Q17, and the emitter of triode Q17 connects+12V electricity
Source, collector are connected with the cathode of diode D8, as the output end of relay drive circuit, are denoted as port Rout, diode
The plus earth of D8.
2. a kind of automatic tuning wireless energy transmission system based on inductance compensation according to claim 1, feature exist
In in high-frequency inverter circuit (2), the value of inductance L is that the value of 285uH, pressure-resistant 400V, capacitor Cs1 and capacitor Cs2 are distinguished
For 51nF and 110nF, pressure-resistant 400V.
3. a kind of automatic tuning wireless energy transmission system based on inductance compensation according to claim 1, feature exist
In in amplitude detection circuit (6), the resistance value of sample resistance Rs is 0.1 ohm.
4. any a kind of automatic tuning wireless energy transmission system based on inductance compensation according to claim 1~3,
It is characterized in that, in inductively compensated circuit (3), the value of each inductance is inductance L1:1uH, inductance L2:250nH, inductance L3:
670nH, inductance L4:1.5uH, inductance L5:4uH, inductance L6 and inductance L7:1uH, inductance L8:2uH, inductance L9:5uH.
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