CN108879999A - A kind of reactance adaptive wireless energy emission system - Google Patents
A kind of reactance adaptive wireless energy emission system Download PDFInfo
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- CN108879999A CN108879999A CN201810888721.9A CN201810888721A CN108879999A CN 108879999 A CN108879999 A CN 108879999A CN 201810888721 A CN201810888721 A CN 201810888721A CN 108879999 A CN108879999 A CN 108879999A
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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
Abstract
A kind of reactance adaptive wireless energy emission system 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 reactance adaptive wireless energy 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 adaptive nothing of reactance for disadvantage of the existing technology
Heat input emission system.The system can be according to the difference for receiving circuit, the parameter of adjust automatically launching circuit, to reach automatic
The purpose for matching different loads, improving efficiency of transmission.
Specific technical solution of the invention is：
A kind of reactance adaptive wireless energy emission system, 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 detection circuit 6, modulus
Conversion circuit 7；The input terminal of the ac-dc converter circuit 1 is electrically connected with city, the output end and height of ac-dc converter circuit 1
The power input of frequency inverter circuit 2 is connected, the input terminal of the sampling output end and amplitude detection circuit 6 of high-frequency inverter circuit 2
It is connected, the output end of amplitude detection circuit 6 is connected with the input terminal of analog to digital conversion circuit 7, the output end of analog to digital conversion circuit 7
It is connected with single-chip microcontroller 5, the also input with the control signal of high-frequency inverter circuit 2 and ON-OFF control circuit 4 respectively of single-chip microcontroller 5
End is connected, the enabled control with the input terminal of inductively compensated circuit 3, amplitude detection circuit 6 respectively of the output end of ON-OFF control circuit 4
End processed is connected, and 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 electricity of field-effect tube Q8
The collector of one end and triode Q7 for hindering R8 is connected, and the other end of resistance R8 is connected with the collector of triode Q5, triode
The emitter of Q5 is connected with one end of resistance R5 and+12V DC power supply, the other end of resistance R5 and the base stage and three of triode Q5
The collector of pole 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, the emitter phase of the emitter and the source electrode of field-effect tube Q8, the source electrode of Q13, Q14 of triode Q7
Even, as the sampling output end of high-frequency inverter circuit 2, it is denoted as Rs-out, is connected with the port Rs-in of amplitude detection circuit 6, electricity
The other end of sense L is connected with one end of capacitor Cs1, the other end of capacitor Cs1 is connected with one end of capacitor Cs2, capacitor Cs2's
A compensation input terminal of the other end as high-frequency inverter circuit 2, is denoted as port Ladj-in1, the end with inductively compensated circuit 3
Mouth Ladj-out1 is connected, the drain electrode of field-effect tube Q13 and the source electrode of field-effect tube Q9, the anode of zener diode D4, triode
One end of the collector of Q10, one end of resistance R10 and capacitor C2 is connected, another compensation as high-frequency inverter circuit 2 is defeated
Enter end, is denoted as port Ladj-in2, which is connected with the port Ladj-out2 of inductively compensated circuit 3, the grid of field-effect tube Q9
Pole is connected with the cathode of the cathode of zener diode D4, the emitter of triode Q10 and diode D5, the base stage of triode Q10
It is connected with the collector of the other end of resistance R10, the anode of diode D5 and triode Q11, the emitter and electricity of triode Q11
The cathode for holding the other end of C2, one end of resistance R11 and diode D6 is connected, the anode of diode D6 and+12V DC power supply phase
Even, the base stage of triode Q11 is connected with the collector of the other end of resistance R11 and triode Q12, the base stage of triode Q12 and
One end of resistance R12 is connected, and the other end of resistance R12 is connected with+5V DC power supply, the emitter and resistance of triode Q12
One end of R13 is connected, and third control signal of the other end of resistance R13 as high-frequency inverter circuit 2 is denoted as port MCU-
In3 is connected with single-chip microcontroller 5；The grid of field-effect tube Q13 is connected with the collector of one end of resistance R14 and triode Q14, and three
The base stage of pole pipe Q14 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
4th control signal of inverter circuit 2, is denoted as port MCU-in4, is connected with single-chip microcontroller 5, the other end of resistance R14 and three
The collector of pole pipe Q15 is connected, and the emitter of triode Q15 is connected with one end of resistance R16 and+12V DC power supply, three poles
The base stage of pipe Q15 is connected with the collector of the other end of resistance R16 and triode Q16, the emitter and resistance of triode Q16
The other end of R17 is connected, and the base stage of triode Q16 is connected with one end of resistance R18, the other end and+5V direct current of resistance R18
Source is connected；
The structure of the amplitude detection circuit 6 is, one end of resistance Rs and the movable contact of relay Ks and amplifier U1's
Non-inverting input terminal is connected, and as an input terminal of amplitude detection circuit 6, port Rs-in is denoted as, with high-frequency inverter circuit 2
Port Rs-out is connected；The other end of resistance Rs and the stationary contact ground connection of relay Ks, one end ground connection of relay coil, 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 port Rout of 9th relay drive circuit is connected；Amplifier U1 positive supply input terminal is connected with+5V DC power supply, amplifier
The negative supply input terminal of U1 is connected with -5V DC power supply, the inverting input terminal of amplifier U1 and one end, the resistance R22 of resistance R20
One end and one end of resistance R23 be connected, one end of the other end of resistance R20 and resistance R21, the inverting input terminal of amplifier U2 and
One end of resistance R19 is connected, and the other end of resistance R21 is connected with the output end of the other end of resistance R22 and amplifier U2, resistance
The other end of R19 is grounded, and the positive supply input terminal end amplifier U2 is connected with+5V DC power supply, the negative supply input terminal of amplifier U2 and-
5V DC power supply is connected, the non-inverting input terminal ground connection of amplifier U2；The output end of amplifier U1 and the other end and resistance of resistance R23
One end of R24 is connected；The other end of resistance R24 and the non-inverting input terminal of amplifier U3 be connected, amplifier U3 positive supply input terminal with+
5V DC power supply is connected, and the negative supply input terminal of amplifier U3 is connected with -5V DC power supply, the inverting input terminal and electricity of amplifier U3
The one end for hindering R25 is connected, the anode of one end of resistance R26 and diode D7 are connected, the other end ground connection of resistance R25, resistance R26
The other end be connected with the cathode of one end of capacitor C3, one end of resistance R27 and diode D8, as amplitude detection circuit 6
Output end is denoted as port Amp-out, is connected with the input end of analog signal of analog to digital conversion circuit 7；The other end of capacitor C3 and
The other end of resistance R27 is grounded, and the anode of diode D8 is connected with the output end of the cathode of diode D7 and amplifier U3；
The structure of the inductively compensated circuit 3 is one end of the coil of relay K1, K2, K3, K4, K5, K6, K7, K8
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, 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 3, be denoted as
Port 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,
The stationary contact of relay K5 and the movable contact of relay K6 are connected, the other end of inductance L7 and one end, the relay K6 of inductance L8
Stationary contact and the movable contact of relay K7 be connected, one end of the other end of inductance L8 and inductance L9, relay K7 stationary contact
And the movable contact of relay K8 is connected, the other end of inductance L9 is connected with the stationary contact of relay K8, as inductively compensated circuit 3
Another output, be denoted as port Ladj-out2, be 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 R28 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 R29 and resistance R30 in U4, resistance R29's
The other end of another termination+12V power supply, resistance R30 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 D9, as the output end of relay drive circuit, are denoted as port Rout, two poles
The plus earth of pipe D9.
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 reactance adaptive wireless energy emission system of the present invention has following beneficial effect：
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 has carried out high-impedance differential processing to the input terminal in amplitude detection circuit, reduces amplitude detection electricity
Influence of the road to main electric bridge.
6, 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 basic 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 below by specific embodiment, each element in following embodiment
Selected parameter is as follows：
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 as shown in figure 3, the high-frequency inverter circuit 2 structure
For the anode of diode D1 is connected with the power supply of+12V, cathode and one end of resistance R1, the hair of triode Q1 of diode D1
One end of emitter-base bandgap grading and capacitor C1 are connected, the collector phase of the other end of resistance R1 and the base stage of triode Q1 and triode Q2
Even, the base stage of triode Q2 is connected with one end of resistance R2, and the other end+5V DC power supply of resistance R2 is connected, triode Q2's
Emitter is connected with one end of resistance R3, first control signal of the other end of resistance R3 as high-frequency inverter circuit 2,
It is denoted as port MCU-in1, is connected with single-chip microcontroller 5, collector and the anode of diode D2, the base stage of triode Q3 of triode Q1
And one end of resistance R4 is connected, the other end and the other end of capacitor C1, the collector of triode Q3, zener diode of resistance R4
The anode of D3, the drain electrode of field-effect tube Q8, one end of inductance L and field-effect tube Q4 source electrode be connected, the emitter of triode Q3
Be connected with the grid of the cathode of diode D2, the cathode of zener diode D3 and field-effect tube Q4, the drain electrode of field-effect tube Q4 with
The drain electrode of field-effect tube Q9 is connected, and as the power input of high-frequency inverter circuit 2, port Vs-in is denoted as, with AC-DC conversion
The DC voltage output end of circuit 1 is connected, the collector phase of the grid of field-effect tube Q8 and one end of resistance R8 and triode Q7
Even, the other end of resistance R8 is connected with the collector of triode Q5, the emitter of triode Q5 and one end of resistance R5 and+12V
DC power supply is connected, and the other end of resistance R5 is connected with the collector of the base stage of triode Q5 and triode Q6, triode Q6's
Base stage is connected with one end of resistance R6, and the other end of resistance R6 is connected with+5V power supply, the emitter and resistance R7 of triode Q6
One end be connected, the other end of resistance R7 is connected with one end of resistance R9, as high-frequency inverter circuit 2 second control input
End, is denoted as port MCU-in2, is connected with single-chip microcontroller 5, the other end of resistance R9 is connected with the base stage of triode Q7, triode Q7
Emitter be connected with the emitter of the source electrode of field-effect tube Q8, the source electrode of Q13, Q14, the sampling as high-frequency inverter circuit 2
Output end is denoted as Rs-out, is connected with the port Rs-in of amplitude detection circuit 6, the other end of inductance L and one end of capacitor Cs1
It is connected, the other end of capacitor Cs1 is connected with one end of capacitor Cs2, and the other end of capacitor Cs2 is as high-frequency inverter circuit 2
One compensation input terminal, is denoted as port Ladj-in1, is connected with the port Ladj-out1 of inductively compensated circuit 3, field-effect tube
The drain electrode of Q13 and 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 compensation input terminal of high-frequency inverter circuit 2, are denoted as port Ladj-in2, should
Port is connected with the port Ladj-out2 of inductively compensated circuit 3, 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, the other end of the emitter of triode Q11 and capacitor C2, resistance R11
The cathode of one end and diode D6 be connected, the anode of diode D6 is connected with+12V DC power supply, the base stage of triode Q11 and
The other end of resistance R11 and the collector of triode Q12 are connected, and the base stage of triode Q12 is connected with one end of resistance R12, electricity
The other end of resistance R12 is connected with+5V DC power supply, and the emitter of triode Q12 is connected with one end of resistance R13, resistance R13
Third control signal of the other end as high-frequency inverter circuit 2, be denoted as port MCU-in3, be connected with single-chip microcontroller 5；?
The grid of effect pipe Q13 is connected with the collector of one end of resistance R14 and triode Q14, the base stage and resistance of triode Q14
One end of R15 is connected, and the other end of resistance R15 is connected with one end of resistance R17, the 4th control as high-frequency inverter circuit 2
Input terminal processed is denoted as port MCU-in4, is connected with single-chip microcontroller 5, the collector phase of the other end and triode Q15 of resistance R14
Even, the emitter of triode Q15 is connected with one end of resistance R16 and+12V DC power supply, the base stage and resistance of triode Q15
The other end of R16 and the collector of triode Q16 are connected, and the emitter of triode Q16 is connected with the other end of resistance R17, and three
The base stage of pole pipe Q16 is connected with one end of resistance R18, and the other end of resistance R18 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 is as shown in figure 4, one end of resistance Rs and moving for relay Ks
The non-inverting input terminal of contact and amplifier U1 are connected, and as an input terminal of amplitude detection circuit 6, port Rs-in are denoted as, with height
The port Rs-out of frequency inverter circuit 2 is connected；The other end of resistance Rs and the stationary contact ground connection of relay Ks, relay coil
One end ground connection, enabled control terminal of the other end of relay coil as amplitude detection circuit 6 are denoted as port Rins, with switch
The output port Rout of the 9th relay drive circuit in control circuit 4 is connected；Amplifier U1 positive supply input terminal and+5V direct current
Power supply is connected, and the negative supply input terminal of amplifier U1 is connected with -5V DC power supply, and the inverting input terminal of amplifier U1 is with resistance R20's
One end of one end, one end of resistance R22 and resistance R23 is connected, the other end of resistance R20 and one end, the amplifier U2 of resistance R21
Inverting input terminal and one end of resistance R19 be connected, the other end of resistance R21 and the other end of resistance R22 and amplifier U2's is defeated
Outlet is connected, and the other end ground connection of resistance R19, the positive supply input terminal end amplifier U2 is connected with+5V DC power supply, and amplifier U2's is negative
Power input is connected with -5V DC power supply, the non-inverting input terminal ground connection of amplifier U2；The output end of amplifier U1 is with resistance R23's
One end of the other end and resistance R24 are connected；The other end of resistance R24 and the non-inverting input terminal of amplifier U3 be connected, amplifier U3 is just
Power input is connected with+5V DC power supply, and the negative supply input terminal of amplifier U3 is connected with -5V DC power supply, and amplifier U3's is anti-
Phase input terminal is connected with one end of resistance R25, the anode of one end of resistance R26 and diode D7 are connected, the other end of resistance R25
Ground connection, the other end of resistance R26 is connected with the cathode of one end of capacitor C3, one end of resistance R27 and diode D8, as width
The output end for spending detection circuit 6, is denoted as port Amp-out, is connected with the input end of analog signal of analog to digital conversion circuit 7；Capacitor
The other end of C3 and the other end ground connection of resistance R27, the output of the anode of diode D8 and the cathode of diode D7 and amplifier U3
End is connected；
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 the precision of one high-power, small resistance value
Resistance, it is ensured that excessive power will not be consumed in the process of sampling.In order to utmostly reduce amplitude detection circuit 6 to high frequency
The influence of main electric bridge in inverter circuit 2, the present invention also take high-impedance differential processing in the input terminal of amplitude detection circuit 6.
The amplitude detection circuit takes the active peak detection structure of double diode, makes the DC voltage of output closer to the alternating current of input
The peak value of pressure, effectively increases detection accuracy.Meanwhile it is more flexible in order to use the present invention, in amplitude detection circuit 6 also
Enabled control function is realized using relay Ks, in system initialisation phase, in order to detect the resonance conditions of launching circuit, after
The switch of electric appliance Ks will disconnect, and sample resistance Rs is effective, and amplitude detection circuit 6 is detected, after the initialization is completed system
Start to work normally after choosing suitable compensation inductance according to testing result, due to not needed to be detected again, relay
Ks's closes the switch, and sample resistance Rs is shorted out together with subsequent amplitude detection circuit 6, to avoid taking in the course of work
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 inductively compensated circuit 3 structure as shown in figure 5, relay K1, K2, K3, K4, K5, K6, K7,
One end of the coil of K8 is 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 in ON-OFF control circuit 4~
Eight output ends of the 8th relay drive circuit are connected, and one end of inductance L1, L2, L3, L4, L5 are connected, also with inductance L6's
The movable contact of one end and relay K5 be connected, the other end of inductance L2, L3, L4, L5 successively with relay K1, K2, K3, K4
Movable contact is connected, and the other end of inductance L1 is connected with the stationary contact of relay K1, K2, K3, K4, as inductively compensated circuit 3
An output end, be denoted as port Ladj-out1, be connected with the port Ladj-in1 of high-frequency inverter circuit 2, inductance L6's is another
One end is connected with the movable contact of one end of inductance L7, the stationary contact of relay K5 and relay K6, the other end and electricity of inductance L7
The movable contact for feeling one end of L8, the stationary contact of relay K6 and relay K7 is connected, the other end of inductance L8 and the one of inductance L9
The movable contact at end, the stationary contact of relay K7 and relay K8 is connected, the stationary contact phase of the other end and relay K8 of inductance L9
Even, as the another output of inductively compensated circuit 3, it is denoted as port Ladj-out2, the port Rs- with high-frequency inverter circuit 2
Out1 is connected；The circuit is accessed by selection to different induction, realizes total inductance value using 0.2uH as interval, from 0.2uH~
The variation of 10uH provides 50 optional compensation inductance by high-frequency inverter circuit 2 of a small amount of component.This hair has been widened significantly
Bright adaptive load 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 R28 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 R29 and resistance R30, another termination+12V power supply of resistance R29, the other end of resistance R30
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 D9,
As the output end of relay drive circuit, it is denoted as port Rout, the plus earth of diode D9.The driving circuit is in monolithic
Optocoupler is used between machine 5 and relay to be isolated, and the big electricity in relay coil or high-frequency inverter circuit 2 is effectively prevented
Flow the 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, ON-OFF control circuit passed through by single-chip microcontroller 5
4 control inductively compensated circuits 3 choose a compensation inductance access main circuit, the inductance L progress of the compensation inductance and transmitting coil
Superposition forms total inductance, and trial makes circuit reach resonance, and amplitude detection circuit 6 detects the alternating voltage vibration at the both ends sample resistance Rs
Width and by analog to digital conversion circuit 7 be converted into digital signal be sent into single-chip microcontroller 5 stored, then single-chip microcontroller 5 control inductance compensation
Circuit 3 changes the value of compensation inductance, repeats the above process, repeatedly, in the compensation inductance for having attempted all different values
Afterwards, single-chip microcontroller 5 is compared all amplitude detection results, with the optimal compensation scheme of determination (when being received back for receiving end
When the difference of road, optimal compensation scheme also can be different).After the completion of initialization procedure, single-chip microcontroller 5 selects optimal compensation inductance
And major loop is accessed, while the relay Ks in span of control limit of control detection circuit 6 makes to close the switch, examine sample resistance Rs and amplitude
Slowdown monitoring circuit 6 is detached from resonant tank, then to receiving end emitted energy.The initialization procedure make system to different reception circuits into
When row energy transmission, launching circuit can be made to be in resonant state, can effectively guarantee reach very high under different loads
Transimission power and efficiency.
Claims (4)
1. a kind of reactance adaptive wireless energy emission system, 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 detection electricity
Road (6), analog to digital conversion circuit (7)；The input terminal of the ac-dc converter circuit (1) is electrically connected with city, AC-DC conversion electricity
The output end on road (1) is connected with the power input of high-frequency inverter circuit (2), the sampling output end of high-frequency inverter circuit (2) with
The input terminal of amplitude detection circuit (6) is connected, the output end of amplitude detection circuit (6) and the input terminal of analog to digital conversion circuit (7)
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 high-frequency inverter circuit (2)
Control signal be connected with the input terminal of ON-OFF control circuit (4), the output end of ON-OFF control circuit (4) respectively with inductance mend
The enabled control terminal of the input terminal, amplitude detection circuit (6) of repaying circuit (3) is connected, the output end and height of inductively compensated circuit (3)
The compensation input terminal of frequency inverter circuit (2) is connected；
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, the emitter of triode Q7 and the source electrode of field-effect tube Q8, the source electrode of Q13, Q14
Emitter is connected, and as the sampling output end of high-frequency inverter circuit (2), is denoted as Rs-out, the port with amplitude detection circuit (6)
Rs-in is connected, and the other end of inductance L is connected with one end of capacitor Cs1, one end phase of the other end and capacitor Cs2 of capacitor Cs1
Even, a compensation input terminal of the other end of capacitor Cs2 as high-frequency inverter circuit (2) is denoted as port Ladj-in1, with inductance
The port Ladj-out1 of compensation circuit (3) is connected, the drain electrode of field-effect tube Q13 and source electrode, the zener diode of field-effect tube Q9
The anode of D4, the collector of triode Q10, one end of resistance R10 and capacitor C2 one end be connected, as high-frequency inverter circuit
(2) another compensation input terminal, is denoted as port Ladj-in2, the port Ladj-out2 of the port and inductively compensated circuit (3)
It is connected, the cathode phase of the grid and the cathode of zener diode D4, the emitter of triode Q10 and diode D5 of field-effect tube Q9
Even, the base stage of triode Q10 is connected with the collector of the other end of resistance R10, the anode of diode D5 and triode Q11, and three
The emitter of pole pipe Q11 is connected with the cathode of the other end of capacitor C2, one end of resistance R11 and diode D6, diode D6's
Anode is connected with+12V DC power supply, the collector phase of the base stage of triode Q11 and the other end of resistance R11 and triode Q12
Even, 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, triode
The emitter of 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 is denoted as port MCU-in3, is connected with single-chip microcontroller (5)；The grid of field-effect tube Q13 and one end of resistance R14 and three poles
The collector of pipe Q14 is connected, and the base stage of triode Q14 is connected with one end of resistance R15, the other end and resistance R17 of resistance R15
One end be connected, as the 4th control signal of high-frequency inverter circuit (2), port MCU-in4 is denoted as, with single-chip microcontroller (5)
It is connected, the other end of resistance R14 is connected with the collector of triode Q15, the emitter of triode Q15 and one end of resistance R16
And+12V DC power supply is connected, and the base stage of triode Q15 is connected with the collector of the other end of resistance R16 and triode Q16, and three
The emitter of pole pipe 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, resistance
The other end of R18 is connected with+5V DC power supply；
The structure of the amplitude detection circuit (6) is, one end of resistance Rs and the movable contact of relay Ks and amplifier U1's is same
Phase input terminal is connected, and as an input terminal of amplitude detection circuit (6), port Rs-in is denoted as, with high-frequency inverter circuit (2)
Port Rs-out be connected；The other end of resistance Rs and the stationary contact ground connection of relay Ks, one end ground connection of relay coil, after
Enabled control terminal of the other end of electric apparatus coil as amplitude detection circuit (6), is denoted as port Rins, with ON-OFF control circuit
(4) the output port Rout of the 9th relay drive circuit in is connected；Amplifier U1 positive supply input terminal and+5V DC power supply phase
Even, the negative supply input terminal of amplifier U1 is connected with -5V DC power supply, the inverting input terminal of amplifier U1 and one end, the electricity of resistance R20
One end of one end and resistance R23 for hindering R22 is connected, and the other end and one end of resistance R21, the reverse phase of amplifier U2 of resistance R20 is defeated
The one end for entering end and resistance R19 is connected, and the other end of resistance R21 is connected with the output end of the other end of resistance R22 and amplifier U2,
The other end of resistance R19 is grounded, and the positive supply input terminal end amplifier U2 is connected with+5V DC power supply, the negative supply input of amplifier U2
End is connected with -5V DC power supply, the non-inverting input terminal ground connection of amplifier U2；The output end of amplifier U1 and the other end of resistance R23 and
One end of resistance R24 is connected；The other end of resistance R24 and the non-inverting input terminal of amplifier U3 be connected, the input of amplifier U3 positive supply
End is connected with+5V DC power supply, and the negative supply input terminal of amplifier U3 is connected with -5V DC power supply, the inverting input terminal of amplifier U3
It is connected with one end of resistance R25, the anode of one end of resistance R26 and diode D7 are connected, the other end ground connection of resistance R25, electricity
The other end of resistance R26 is connected with the cathode of one end of capacitor C3, one end of resistance R27 and diode D8, as amplitude detection electricity
The output end on road (6), is denoted as port Amp-out, is connected with the input end of analog signal of analog to digital conversion circuit (7)；Capacitor C3's
The other end of the other end and resistance R27 ground connection, the output end phase of the anode of diode D8 and the cathode of diode D7 and amplifier U3
Even；
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 R28 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 R29 and resistance R30, and resistance R29's is another
One termination+12V power supply, the other end of resistance R30 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 D9, as the output end of relay drive circuit, are denoted as port Rout, diode
The plus earth of D9.
2. a kind of reactance adaptive wireless energy emission system according to claim 1, which is characterized in that in high-frequency inversion
In circuit (2), the value of inductance L be 285uH, pressure-resistant 400V, capacitor Cs1 and capacitor Cs2 value be respectively 51nF and
110nF, pressure-resistant 400V.
3. a kind of reactance adaptive wireless energy emission system according to claim 1, which is characterized in that in amplitude detection
In circuit (6), the resistance value of sample resistance Rs is 0.1 ohm.
4. any a kind of reactance adaptive wireless energy emission system according to claim 1~3, which 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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