CN107134927A - A kind of inductively coupled power transfer device with drop-down auxiliary switch - Google Patents
A kind of inductively coupled power transfer device with drop-down auxiliary switch Download PDFInfo
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- CN107134927A CN107134927A CN201710399479.4A CN201710399479A CN107134927A CN 107134927 A CN107134927 A CN 107134927A CN 201710399479 A CN201710399479 A CN 201710399479A CN 107134927 A CN107134927 A CN 107134927A
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- 238000012546 transfer Methods 0.000 title claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 69
- 238000004891 communication Methods 0.000 claims description 55
- 230000001276 controlling effect Effects 0.000 claims description 37
- 238000001514 detection method Methods 0.000 claims description 35
- 230000005611 electricity Effects 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 230000003019 stabilising effect Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
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- 210000000080 chela (arthropods) Anatomy 0.000 claims 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004520 electroporation Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
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- 230000001939 inductive effect Effects 0.000 description 2
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- 230000003044 adaptive effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H02J5/005—
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- H02J7/025—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention belongs to electroporation field, it is related to a kind of inductively coupled power transfer device with drop-down auxiliary switch, increase by one group of drop-down auxiliary switch branch road with LC resonance single-tube contravariant bipolarity inverter topologies in existing ICPT devices, an auxiliary switch is included in the branch road, main switch is identical with the switching frequency of auxiliary switch, Sofe Switch control can be achieved, and reliability is improved without straight-through problem between two pipes；In the case where keeping original circuit advantage, the voltage for bearing switching tube two ends is reduced to original 2/3, allow device using MOS transistor as switching tube, switching frequency is up to more than 83kHz, simultaneously because auxiliary switch ON time is short, low in energy consumption, further to reduce the volume and weight of ICPT devices, reduce cost and technical scheme is provided.
Description
Technical field：
The invention belongs to electroporation field, it is related to a kind of inductively coupled power transfer dress with drop-down auxiliary switch
Put, the transmission occasion of inductively electric energy is used for using auxiliary switch branch road.
Background technology
At present, inductively coupled power transfer (Inductively Coupled Power Transfer, ICPT) device
Main circuit topology is mostly inverse using full-bridge voltage type inverter circuit, half-bridge LLC voltage-type resonance inversion circuits and LC resonance single tubes
Become bipolarity inverter circuit；First two circuit topology has that circuit structure is relative complex, and power supply cost is of a relatively high, on bridge arm
Lower switching tube easily causes the problems such as leading directly to and burn out；The latter is a kind of novel radio electric energy transmission topology, with circuit it is simple,
Cost is low, efficiency of transmission is high, no-voltage can be achieved opens the advantages of being controlled with zero voltage turn-off, but there is also some shortcomings,
When device input voltage is 220VacDuring/50Hz alternating currents, the voltage that switching tube two ends are born in its running up to 1200V
More than, cause switching tube to select pressure-resistant higher isolated-gate field effect transistor (IGFET) (IGBT), in order to reduce ICPT devices
Volume and weight, national Specification switching frequency need to reach more than 83kHz, and when IGBT switching frequency be more than 25kHz with
Afterwards, its loss can increase with the increase of switching frequency, and constraining the volume and cost of ICPT devices further reduces, unfavorable
In the application of this novel I CPT devices topology.So, design a kind of new adaptive circuit and its control method has very much
Application and development is worth.
The content of the invention：
It is bipolar with LC resonance single-tube contravariants in existing ICPT devices it is an object of the invention to overcome the shortcoming of prior art
Property inverter topology in increase by one group of drop-down auxiliary switch branch road, comprising auxiliary switch in the branch road, main switch
It is identical with the switching frequency of auxiliary switch, Sofe Switch control can be achieved, and without straight-through problem between two pipes, improve reliable
Property；In the case where keeping original circuit advantage, the voltage for bearing switching tube two ends is reduced to original 2/3, makes device can
So that using MOS transistor (MOSFET), as switching tube, switching frequency is up to more than 83kHz, while because of auxiliary switch
Pipe ON time is short, low in energy consumption, is the further volume and weight for reducing ICPT devices, reduces cost and provides technical scheme.
The agent structure of ICPT devices of the present invention with drop-down auxiliary switch includes the first rectifier bridge, L1C1Filtering
Circuit, resonant coupling circuit, main switch, the first diode, drop-down auxiliary switch branch road, the second rectifier bridge, the second filtered electrical
Appearance, equivalent load, primary-side-control circuit and secondary control circuit；220VacThrough the first rectifier bridge, L1C1It is converted into after filter circuit
DC voltage, main switch, the first diode and drop-down auxiliary switch branch road are by DC inverter into high-frequency alternating current, and high frequency is handed over
Stream electricity is applied to secondary inductance two ends in the two ends of primary side inductance in resonant coupling circuit, resonant coupling circuit and induces voltage,
Secondary inductance both end voltage is converted into direct current after the second rectifier bridge, the second filter capacitor, is that equivalent load is powered；First is whole
Industrial-frequency alternating current is carried out rectification by stream bridge；L1C1Filter circuit is composed in series by filter inductance and the first filter capacitor, for power frequency
Filtering；Resonant coupling circuit is by primary compensation capacitor, primary side screen layer, primary side inductance, secondary inductance, secondary screen layer, first
Secondary compensating electric capacity or the second secondary compensating electric capacity electrical connection composition, for energy to be delivered into secondary from primary side, so as to be negative
Power supply is carried, the mutual inductance between primary side inductance and secondary inductance changes with the transmission range between primary side inductance and secondary inductance；
Primary side screen layer and secondary screen layer are used to improve the device coefficient of coup and improve efficiency of transmission, weaken primary side inductance and secondary electricity
Feel the electromagnetic interference to former and deputy side circuit board；First secondary compensating electric capacity and the second secondary compensating electric capacity can switch mutually, if
The first secondary compensating electric capacity is switched to, then primary compensation capacitor and the secondary series connection in parallel of the first secondary compensating electric capacity composition primary side
(PS) collocation structure output shows as constant pressure source, it is adaptable to the equipment for needing constant pressure to power, if switching to the second secondary compensation electricity
Hold, then primary compensation capacitor and (PP) collocation structure output in parallel of the second secondary compensating electric capacity composition primary side secondary in parallel is shown as
Constant-current source, it is adaptable to need the equipment of constant current-supplying；Main switch, the first diode and drop-down auxiliary switch branch road are used to realize
Electric energy inversion, the first diode is the anti-paralleled diode of main switch；Auxiliary switch, the second diode and clamp capacitor are pressed
It is electrically connected according to electrical principles and constitutes drop-down auxiliary switch branch road, the voltage for reducing main switch drain-source two ends, wherein
Second diode is the anti-paralleled diode of auxiliary switch；Auxiliary switch is identical with main switch switching frequency, and auxiliary is opened
There is dead band in the conducting for closing pipe and main switch, the ON time of auxiliary switch is short, and conduction loss is smaller；Second rectifier bridge is used
In high-frequency alternating current is carried out rectification, the second filter capacitor is used for High frequency filter, and equivalent load is capacitive load or inductive load；
Primary-side-control circuit includes the first single chip machine controlling circuit, drive circuit, the first accessory power supply, the first radio communication circuit, the
One voltage detecting circuit, remote control, second voltage detection circuit, primary-side-control circuit realize main switch and auxiliary switch
No-voltage opens control, and makes device output voltage stabilization or outputting current steadily, wherein, the first single chip machine controlling circuit according to
The voltage signal for the main switch that signal of communication that first radio communication circuit is received, first voltage detection electric circuit inspection are arrived and
The voltage signal for the clamp capacitor that second voltage detection electric circuit inspection is arrived, exports the control of main switch and auxiliary switch respectively
Signal, control signal driving main switch and auxiliary switch after drive circuit isolation amplification；First accessory power supply is first
Single chip machine controlling circuit and drive circuitry；First radio communication circuit receives the feedback letter that the second radio communication circuit is sent
Number and the control signal that sends of remote control, the first radio communication circuit is to remote control emitter operating state signal；First electricity
Pressure detection circuit is used for the voltage for detecting main switch drain-source two ends；Remote control is sent out according to the first radio communication circuit received
Whether the plant running status signal gone out, display device output voltage, output current and realize that no-voltage is open-minded；Remote control is to
One radio communication circuit emissioning controling signal, makes the first single chip machine controlling circuit select Isobarically Control or current constant control；Second electricity
The voltage at pressure detection electric circuit inspection clamp capacitor two ends, when the voltage increase for detecting clamp capacitor two ends, the first single-chip microcomputer control
The control signal of auxiliary switch is changed into high level by circuit processed, and auxiliary switch realizes that no-voltage is open-minded, when clamp capacitor two
During the voltage increase at end, primary side inductance is charged by the second diode for clamp capacitor, the second diode current flow, auxiliary switch
The voltage at drain-source two ends is 0, and auxiliary switch realizes that no-voltage is open-minded；Secondary controls circuit by sample circuit, second singlechip
Circuit, the second accessory power supply and the second radio communication circuit composition are controlled, for giving primary-side-control circuit transmission feedback signal, is adopted
The output voltage and output current of sample circuit checker；Second singlechip controls circuit according to the letter of the sample circuit received
Number, the second radio communication circuit of control launches feedback signal to the first radio communication circuit；Second accessory power supply is the second monolithic
Machine control circuit is powered.
The present invention using with drop-down auxiliary switch ICPT devices realizes electric energy transmission control method, specifically include with
Lower step：
(1), first, if load needs constant pressure to power, first is switched to according to load selection control mode and collocation structure
Secondary compensating electric capacity, i.e., using the collocation structure of primary side secondary series connection (PS) in parallel, select constant pressure control method；If load needs
Constant current-supplying, then switch to the second secondary compensating electric capacity, using the collocation structure of primary side secondary in parallel (PP) in parallel, selects constant current
Control method；If neither selection constant pressure is powered, constant current-supplying is not also selected, then device is standby, until selection power supply mode；
(2) if, selection constant pressure power, first using pulse width modulation (PWM) soft start, give original switching frequency,
Maintained switch frequency is constant, and ON time is gradually increased to setting value, and output voltage reaches setting voltage, when device output voltage
When unstable, regulated output voltage is controlled by pulse frequency modulated (PFM).Sample circuit is the output voltage signal detected
Second singlechip control circuit is sent to, second singlechip controls circuit to change according to the difference of output voltage, passes through the second nothing
The first radio communication circuit that line telecommunication circuit is sent to primary-side-control circuit in different control signals, primary-side-control circuit connects
The signal that the second radio communication circuit is sent is received, then passes to the first single chip machine controlling circuit, the first single chip machine controlling circuit
Carry out the switching frequency of adjusting apparatus；If output voltage becomes big, second singlechip control circuit can pass through the second radio communication circuit
The signal of increase switching frequency is sent to primary-side-control circuit；If output voltage reduces, second singlechip controls circuit by the
Two radio communication circuits send the signal for reducing switching frequency to primary-side-control circuit, so that the output voltage of stabilising arrangement；When
Second voltage detects electric circuit inspection to the voltage increase at clamp capacitor two ends, and the first single chip machine controlling circuit is auxiliary switch
Control signal is changed into high level, and auxiliary switch realizes that no-voltage is open-minded, and whether detection main switch is that no-voltage is open-minded, and master opens
Pipe is closed if not no-voltage is open-minded, realizes that no-voltage is open-minded by PWM controls, when the drive signal of main switch is become by low level
During for high level, the voltage at first voltage detection electric circuit inspection main switch drain-source two ends, if the electricity at main switch drain-source two ends
Pressure is not 0, that is, is not carried out that no-voltage is open-minded, then the first single chip machine controlling circuit reduces the dutycycle of main switch；If master opens
The voltage for closing pipe drain-source two ends is 0, that is, realizes that no-voltage is open-minded, then the dutycycle of main switch is constant；When main switch is real
After existing no-voltage is opened, whether judgment means shut down, if providing stopping signal, device is stopped；If not providing shutdown letter
Number, then output voltage is detected again, is repeated the above steps；
(3) if, selection constant current-supplying, first using PWM soft starts, that is, give original switching frequency, maintained switch frequency
Constant, ON time is gradually increased to setting value, and output current reaches setting electric current；When the output current of device is unstable,
By the stable output current of PFM controls, the output current signal detected is sent to second singlechip control electricity by sample circuit
Road, second singlechip controls circuit according to the change of output current, is sent out by the second radio communication circuit to primary-side-control circuit
The first radio communication circuit gone out in different control signals, primary-side-control circuit receives what the second radio communication circuit was sent
Signal, then pass to the first single chip machine controlling circuit, the switching frequency of the first single chip machine controlling circuit adjusting apparatus；If output electricity
Rheology is big, and second singlechip controls circuit to send increase switching frequency to primary-side-control circuit by the second radio communication circuit
Signal；If output current reduces, second singlechip control circuit is sent by the second radio communication circuit to primary-side-control circuit
Reduce the signal of switching frequency, so that the output current of stabilising arrangement；When second voltage detects electric circuit inspection to clamp capacitor two
The control signal of auxiliary switch is changed into high level by the voltage increase at end, the first single chip machine controlling circuit, and auxiliary switch is real
Existing no-voltage is open-minded, and whether detection main switch is that no-voltage is open-minded, and main switch is controlled by PWM if not no-voltage is open-minded
System realizes that no-voltage is open-minded, when the drive signal of main switch is changed into high level from low level, first voltage detection circuit inspection
The voltage at main switch drain-source two ends is surveyed, if the voltage at main switch drain-source two ends is not 0, that is, it is open-minded to be not carried out no-voltage,
Then the first single chip machine controlling circuit reduces the dutycycle of main switch；If the voltage at main switch drain-source two ends is 0, that is, realize
No-voltage is open-minded, then the dutycycle of main switch is constant；After main switch realizes that no-voltage is opened, whether judgment means stop
Machine, if providing stopping signal, device is stopped；If not providing stopping signal, output current is detected again, is repeated above-mentioned
Step；Whole device is by the control mode regulated output voltage or output current of frequency conversion+variable duty cycle, while making main switch
Realize that no-voltage is open-minded with auxiliary switch, reach the purpose of inductively coupled power transfer regulation and control.
The present invention compared with prior art, using the ICPT devices with drop-down auxiliary switch, with circuit structure it is simple,
Main switch and auxiliary switch have identical switching frequency, are easy to control and can all realize Zero-voltage soft switch, auxiliary
The features such as service time of switching tube is short, increases auxiliary switch, its ON time is short, and can realize Sofe Switch control, makes whole
Individual device loss is smaller；Increase drop-down auxiliary switch branch road, makes the voltage reduction by 1/3 that main switch bears, make main switch and
Auxiliary switch can be using the MOSFET that price is low, switching frequency is up to more than 83kHz so that switching frequency meets national mark
It is accurate so that the volume of loosely coupled transformer also accordingly reduces, and is conducive to application；It is controlled using frequency conversion+variable duty cycle,
Realize that no-voltage is open-minded, regulated output voltage or output current improve the reliability of device, be conducive to application；According to not
Same load uses different collocation structure and corresponding PWM and PFM control, if load needs constant pressure to power, switches
Into the first secondary compensating electric capacity, i.e., using PS collocation structure, while using constant pressure control method；If load needs constant current to supply
Electricity, then switch to the second secondary compensating electric capacity, i.e., using PP collocation structure, while using constant current control method.
Brief description of the drawings：
Fig. 1 is the agent structure circuit theory schematic diagram of apparatus of the present invention.
Fig. 2 is the process flow diagram that the present invention realizes electric energy transmission control.
Fig. 3 is the work electric signal waveform figure of device of the present invention, and wherein Ugs1 is main switch Q1Driving voltage,
Ugs2 is auxiliary switch Q2Driving voltage, Uds1 be main switch Q1The voltage at drain-source two ends, Uds2 is auxiliary switch Q2
The voltage at drain-source two ends, Up is primary compensation capacitor CpThe voltage at two ends, Ip is primary inductor LpElectric current, Uc is clamp capacitor
CcThe voltage at two ends.
Embodiment：
Technical scheme is described in more detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment：
The agent structure for the ICPT devices with drop-down auxiliary switch that the present embodiment is related to includes the first rectifier bridge 1, L1C1
Filter circuit 2, resonant coupling circuit 3, main switch Q1, the first diode DQ1, drop-down auxiliary switch branch road 4, the second rectifier bridge
5th, the second filter capacitor C2, equivalent load Z, primary-side-control circuit 6 and secondary control circuit 7；220VacThrough the first rectifier bridge 1,
L1C1DC voltage, main switch Q are converted into after filter circuit 21, the first diode DQ1With drop-down auxiliary switch branch road 4 by direct current
Electricity is reverse into high-frequency alternating current, and high-frequency alternating current is applied to primary inductor L in resonant coupling circuit 3pTwo ends, resonance coupling electricity
Secondary inductance L in road 3sTwo ends induce voltage, secondary inductance LsBoth end voltage is through the second rectifier bridge 5, the second filter capacitor C2Afterwards
Direct current is converted into, is that equivalent load Z powers；The two ends of first rectifier bridge 1 respectively with 220VacAnd L1C1Filter circuit 2 is electrically connected
Connect, for industrial-frequency alternating current to be carried out rectification；L1C1Filter circuit 2 is by filter inductance L1With the first filter capacitor C1It is composed in series,
For power frequency filtering；Resonant coupling circuit 3 is by primary compensation capacitor Cp, primary side screen layer Sp, primary inductor Lp, secondary inductance Ls、
Secondary screen layer Ss, the first secondary compensating electric capacity CsOr the second secondary compensating electric capacity CtElectrical connection composition, for by energy from primary side
Secondary is delivered to, so that be load supplying, wherein, M is primary inductor LpWith secondary inductance LsBetween mutual inductance, M is with LpAnd LsIt
Between transmission range and change；Primary side screen layer SpWith secondary screen layer SsFor improving the device coefficient of coup and improving transmission effect
Rate, weakens primary inductor LpWith secondary inductance LsTo the electromagnetic interference of former and deputy side circuit board；First secondary compensating electric capacity CsWith
Two secondary compensating electric capacity CtIt can switch mutually, if switching to the first secondary compensating electric capacity Cs, then primary compensation capacitor CpWith first
Secondary compensating electric capacity CsComposition PS collocation structure outputs show as constant pressure source, it is adaptable to the equipment for needing constant pressure to power, if switching
Into the second secondary compensating electric capacity Ct, then primary compensation capacitor CpWith the second secondary compensating electric capacity CtConstitute PP collocation structures output table
It is now constant-current source, it is adaptable to need the equipment of constant current-supplying；Main switch Q1, the first diode DQ1With drop-down auxiliary switch branch road
4 are used to realize electric energy inversion, the first diode DQ1For main switch Q1Anti-paralleled diode.Auxiliary switch Q2, the two or two
Pole pipe DQ2With clamp capacitor CcComposition drop-down auxiliary switch branch road 4 is electrically connected according to electrical principles, for reducing main switch
Pipe Q1The voltage at drain-source two ends, wherein the second diode DQ2For auxiliary switch Q2Anti-paralleled diode；Auxiliary switch Q2With
Main switch Q1Switching frequency is identical, auxiliary switch Q2With main switch Q1Conducting there is dead band, auxiliary switch Q2Lead
The logical time is short, auxiliary switch Q2Conduction loss it is smaller；Second rectifier bridge 5 is used to high-frequency alternating current carry out rectification, second
Filter capacitor C2For High frequency filter, equivalent load Z is capacitive load or inductive load；It is single that primary-side-control circuit 6 includes first
Piece machine control circuit 8, drive circuit 9, the first accessory power supply 10, the first radio communication circuit 11, first voltage detection circuit 12,
Remote control 13, second voltage detection circuit 14, primary-side-control circuit 6 make main switch Q1With auxiliary switch Q2Realize no-voltage
Control is opened, and makes device output voltage stabilization or outputting current steadily, wherein, the first single chip machine controlling circuit 8 is according to first
The main switch Q that signal of communication that radio communication circuit 11 is received, first voltage detection circuit 12 are detected1Voltage signal
And the clamp capacitor C that second voltage detection circuit 14 is detectedcVoltage signal, main switch Q is exported respectively1And auxiliary switch
Pipe Q2Control signal, control signal driving main switch Q after the isolation amplification of drive circuit 91With auxiliary switch Q2；First
Accessory power supply 10 is that the first single chip machine controlling circuit 8 and drive circuit 9 are powered；It is wireless that first radio communication circuit 11 receives second
The control signal that the feedback signal and remote control 13 that telecommunication circuit 18 is sent are sent, the first radio communication circuit 11 is to remote control 13
Emitter operating state signal；First voltage detection circuit 12 is used to detect main switch Q1The voltage at drain-source two ends；Remote control
The plant running status signal that device 13 is sent according to the first radio communication circuit 11 received, it is display device output voltage, defeated
Go out electric current and whether realize that no-voltage is open-minded；Remote control 13 makes the first list to the emissioning controling signal of the first radio communication circuit 11
Piece machine control circuit 8 selection Isobarically Control or current constant control；The second voltage detection detection clamp capacitor of circuit 14 CcThe electricity at two ends
Pressure, when detecting clamp capacitor CcThe voltage increase at two ends, the first single chip machine controlling circuit 8 is auxiliary switch Q2Control letter
Number it is changed into high level, auxiliary switch Q2Realize that no-voltage is open-minded, as clamp capacitor CcDuring the voltage increase at two ends, primary side inductance
LpPass through the second diode DQ2For clamp capacitor CcCharging, the second diode DQ2Conducting, auxiliary switch Q2The electricity at drain-source two ends
Press as 0, auxiliary switch Q2, realize that no-voltage is open-minded；Secondary controls circuit 7 to control electricity by sample circuit 15, second singlechip
Road 16, the second accessory power supply 17 and the second radio communication circuit 18 are constituted, for launching feedback signal to primary-side-control circuit 6,
The output voltage and output current of the detection means of sample circuit 15；Second singlechip controls circuit 16 according to the sampling electricity received
The signal on road 15, the second radio communication circuit 18 of control launches feedback signal to the first radio communication circuit 11；Second auxiliary electricity
Source 17 is that second singlechip control circuit 16 is powered.
The method that the ICPT devices with drop-down auxiliary switch that the present embodiment is related to realize electric energy transmission control, including with
Lower step：
(1), first, if load needs constant pressure to power, first is switched to according to load selection control mode and collocation structure
Secondary compensating electric capacity Cs, i.e., using PS collocation structure, select constant pressure control method；If load needs constant current-supplying, switch
Into the second secondary compensating electric capacity Ct, using PP collocation structure, select constant current control method；If neither selection constant pressure is powered,
Constant current-supplying is not selected, then device is standby, until selection power supply mode；
(2) if, selection constant pressure power, first using PWM soft starts, give original switching frequency, maintained switch frequency is not
Become, ON time is gradually increased to setting value, and output voltage reaches setting voltage, when device output voltage is unstable, passes through
PFM controls regulated output voltage, and 15 output voltage signals detected of sample circuit are sent to second singlechip control circuit
16, second singlechip controls circuit 16 to be changed according to the difference of output voltage, by the second radio communication circuit 18 to primary side control
The first radio communication circuit 11 that circuit 6 processed is sent in different control signals, primary-side-control circuit 6 receives the second channel radio
The signal that letter circuit 18 is sent, then the first single chip machine controlling circuit 8 is passed to, the first single chip machine controlling circuit 8 carrys out adjusting apparatus
Switching frequency；If output voltage becomes big, second singlechip control circuit 16 can be by the second radio communication circuit 18 to primary side
Control circuit 6 sends the signal of increase switching frequency；If output voltage reduces, second singlechip control circuit 16 passes through the second nothing
Line telecommunication circuit 18 sends the signal for reducing switching frequency to primary-side-control circuit 6, so that the output voltage of stabilising arrangement；When
Two voltage detecting circuits 14 detect clamp capacitor CcThe voltage increase at two ends, the first single chip machine controlling circuit 8 is auxiliary switch
Pipe Q2Control signal be changed into high level, auxiliary switch Q2Realize that no-voltage is open-minded, detection main switch Q1Whether it is no-voltage
It is open-minded, main switch Q1If not no-voltage is open-minded, realize that no-voltage is open-minded by PWM controls, as main switch Q1Driving letter
When number being changed into high level from low level, the first voltage detection detection main switch of circuit 12 Q1The voltage at drain-source two ends, if master opens
Close pipe Q1The voltage at drain-source two ends is not 0, that is, it is open-minded to be not carried out no-voltage, then the first single chip machine controlling circuit 8 reduces master and opened
Close pipe Q1Dutycycle；If main switch Q1The voltage at drain-source two ends is 0, that is, it is open-minded to realize no-voltage, then main switch Q1's
Dutycycle is constant；As main switch Q1After realizing that no-voltage is opened, whether judgment means shut down, if providing stopping signal, fill
Put and be stopped；If not providing stopping signal, output voltage is detected again, is repeated the above steps；
(3) if, selection constant current-supplying, first using PWM soft starts, that is, give original switching frequency, maintained switch frequency
Constant, ON time is gradually increased to setting value, and output current reaches setting electric current；When the output current of device is unstable,
By the stable output current of PFM controls, 15 output current signals detected of sample circuit are sent to second singlechip control
Circuit 16, second singlechip controls circuit 16 according to the change of output current, by the second radio communication circuit 18 to primary side control
The first radio communication circuit 11 that circuit 6 processed is sent in different control signals, primary-side-control circuit 6 receives the second channel radio
The signal that letter circuit 18 is sent, then the first single chip machine controlling circuit 8 is passed to, the adjusting apparatus of the first single chip machine controlling circuit 8
Switching frequency；If output current becomes big, second singlechip controls circuit 16 by the second radio communication circuit 18 to primary-side-control
Circuit 6 sends the signal of increase switching frequency；If output current reduces, second singlechip control circuit 16 passes through the second channel radio
Letter circuit 18 sends the signal for reducing switching frequency to primary-side-control circuit 6, so that the output current of stabilising arrangement；When the second electricity
Pressure detection circuit 14 detects clamp capacitor CcThe voltage increase at two ends, the first single chip machine controlling circuit 8 is auxiliary switch Q2's
Control signal is changed into high level, auxiliary switch Q2Realize that no-voltage is open-minded, detection main switch Q1Whether it is that no-voltage is open-minded,
Main switch Q1If not no-voltage is open-minded, realize that no-voltage is open-minded by PWM controls,.As main switch Q1Drive signal by
When low level is changed into high level, the first voltage detection detection main switch of circuit 12 Q1The voltage at drain-source two ends, if main switch Q1
The voltage at drain-source two ends is not 0, that is, it is open-minded to be not carried out no-voltage, then the first single chip machine controlling circuit 8 reduces main switch Q1
Dutycycle；If main switch Q1The voltage at drain-source two ends is 0, that is, it is open-minded to realize no-voltage, then main switch Q1Dutycycle
It is constant；As main switch Q1After realizing that no-voltage is opened, whether judgment means shut down, if providing stopping signal, and device stops
Work；If not providing stopping signal, output current is detected again, is repeated the above steps；Device passes through frequency conversion+variable duty cycle
Control mode regulated output voltage or output current, while making main switch Q1With auxiliary switch Q2Realize that no-voltage is open-minded, reach
The purpose regulated and controled to inductively coupled power transfer.
The overall work process for the ICPT devices with drop-down auxiliary switch that the present embodiment is related to was included with the next stage：
The t0-t1 periods：At t0 moment, main switch Q1Driving voltage Ugs1 be changed into high level, now primary inductor Lp's
Electric current is negative, main switch Q1It is not turned on, primary inductor LpPass through the first diode DQ1With the first filter capacitor C1Afterflow, master opens
Close pipe Q1The voltage at drain-source two ends is 0, to t1 moment, primary inductor LpElectric current be changed into 0, main switch Q1Conducting, main switch
Q1Realize that no-voltage is open-minded；
The t1-t2 periods：Input voltage is primary inductor LpCharging, primary inductor LpElectric current gradually increase, to the t2 moment,
Main switch Q1Driving voltage Ugs1 be changed into low level, main switch Q1Shut-off；
The t2-t3 periods：Primary compensation capacitor CpFor primary inductor LpCharging, primary inductor LpElectric current continue increase, to t3
Moment, primary compensation capacitor CpVoltage be reduced to 0, primary inductor LpElectric current increase to maximum；
The t3-t4 periods：Primary inductor LpIt is reversed primary compensation capacitor CpCharging, primary compensation capacitor CpVoltage reversal
Increase, primary compensation capacitor CpVoltage add the first filter capacitor C1Voltage be less than clamp capacitor CcVoltage, the two or two pole
Pipe DQ2Reversely cut-off, to t4 moment, primary compensation capacitor CpVoltage add the first filter capacitor C1Voltage be more than clamper electricity
Hold CcVoltage, the second diode DQ2Conducting；
The t4-t5 periods：Primary inductor LpIt is simultaneously primary compensation capacitor CpWith clamp capacitor CcCharging, clamp capacitor Cc's
Voltage gradually increases, to t5 moment, auxiliary switch Q2Driving voltage Ugs2 be changed into high level, but primary inductor LpElectric current
Still it is just auxiliary switch Q2It is not turned on；
The t5-t6 periods：Primary inductor LpContinue as primary compensation capacitor CpWith clamp capacitor CcCharging, the second diode DQ2
Conducting, auxiliary switch Q2The voltage at drain-source two ends is 0, to t6 moment, primary inductor LpElectric current drop to 0, primary side compensation electricity
Hold CpVoltage reversal increase to maximum, while clamp capacitor CcVoltage increase to maximum, auxiliary switch Q2Conducting, auxiliary
Switching tube Q2Realize that no-voltage is open-minded；
The t6-t7 periods：Primary compensation capacitor CpWith clamp capacitor CcIt is simultaneously primary inductor LpReverse charging, to the t7 moment,
Auxiliary switch Q2Driving voltage Ugs2 be changed into low level, auxiliary switch Q2Shut-off, clamp capacitor CcStop as primary side inductance
LpCharging；
The t7-t8 periods：Primary compensation capacitor CpVoltage reduction, primary inductor LpElectric current reduce, to t8 moment, primary side
Compensating electric capacity CpVoltage be changed into 0；
The t8-t9 periods：Primary inductor LpFor primary compensation capacitor CpReverse charging, primary compensation capacitor CpVoltage gradually
Increase, to t9 moment, primary compensation capacitor CpVoltage increase to and the first filter capacitor C1Voltage it is equal；
The t9-t10 periods：Primary inductor LpPass through the first diode DQ1With the first filter capacitor C1Afterflow, to the t10 moment,
Main switch Q1Driving voltage Ugs1 be changed into high level, now primary inductor LpElectric current be negative, main switch Q1It is not turned on.
Claims (2)
1. a kind of inductively coupled power transfer device with drop-down auxiliary switch, it is characterised in that：Used in existing ICPT devices
Increase by one group of drop-down auxiliary switch branch road in LC resonance single-tube contravariant bipolarity inverter topologies, it is whole that concrete structure includes first
Flow bridge, L1C1Filter circuit, resonant coupling circuit, main switch, the first diode, drop-down auxiliary switch branch road, the second rectification
Bridge, the second filter capacitor, equivalent load, primary-side-control circuit and secondary control circuit；220VacThrough the first rectifier bridge, L1C1Filter
It is converted into DC voltage after wave circuit, main switch, the first diode and drop-down auxiliary switch branch road are by DC inverter into height
Frequency alternating current, high-frequency alternating current is applied to secondary inductance in the two ends of primary side inductance in resonant coupling circuit, resonant coupling circuit
Two ends induce voltage, and secondary inductance both end voltage is converted into direct current after the second rectifier bridge, the second filter capacitor, is equivalent
Load supplying；Industrial-frequency alternating current is carried out rectification by the first rectifier bridge；L1C1Filter circuit is by filter inductance and the first filter capacitor string
Joint group is into for power frequency filtering；Resonant coupling circuit by primary compensation capacitor, primary side screen layer, primary side inductance, secondary inductance,
Secondary screen layer, the first secondary compensating electric capacity or the second secondary compensating electric capacity electrical connection composition, for energy to be transmitted from primary side
To secondary, so as to be load supplying, the mutual inductance between primary side inductance and secondary inductance is between primary side inductance and secondary inductance
Transmission range and change；Primary side screen layer and secondary screen layer are used to improve the device coefficient of coup and improve efficiency of transmission, weaken
The electromagnetic interference of primary side inductance and secondary inductance to former and deputy side circuit board；First secondary compensating electric capacity and the second secondary compensation electricity
Appearance can switch mutually, if switching to the first secondary compensating electric capacity, primary compensation capacitor and the first secondary compensating electric capacity composition
Primary side parallel connection secondary series compensation structure output shows as constant pressure source, it is adaptable to the equipment for needing constant pressure to power, if switching to the
Two secondary compensating electric capacities, then primary compensation capacitor and the second secondary compensating electric capacity composition primary side secondary shunt compensation structure in parallel are defeated
Go out to show as constant-current source, it is adaptable to need the equipment of constant current-supplying；Main switch, the first diode and drop-down auxiliary switch branch road
For realizing electric energy inversion, the first diode is the anti-paralleled diode of main switch；Auxiliary switch, the second diode and pincers
Position electric capacity is electrically connected composition drop-down auxiliary switch branch road, the electricity for reducing main switch drain-source two ends according to electrical principles
Pressure, wherein the second diode is the anti-paralleled diode of auxiliary switch；Auxiliary switch is identical with main switch switching frequency,
There is dead band in the conducting of auxiliary switch and main switch, the ON time of auxiliary switch is short, and conduction loss is smaller；Second is whole
Stream bridge is used to high-frequency alternating current carry out rectification, and the second filter capacitor is used for High frequency filter, and equivalent load is capacitive load or sense
Property load；Primary-side-control circuit includes the first single chip machine controlling circuit, drive circuit, the first accessory power supply, the first radio communication
Circuit, first voltage detection circuit, remote control, second voltage detection circuit, primary-side-control circuit open main switch and auxiliary
Close pipe and realize that no-voltage opens control, and make device output voltage stabilization or outputting current steadily, wherein, the control of the first single-chip microcomputer
The electricity for the main switch that signal of communication that circuit is received according to the first radio communication circuit, first voltage detection electric circuit inspection are arrived
The voltage signal for the clamp capacitor that pressure signal and second voltage detection electric circuit inspection are arrived, exports main switch and auxiliary switch respectively
The control signal of pipe, control signal driving main switch and auxiliary switch after drive circuit isolation amplification；First auxiliary electricity
Source is the first single chip machine controlling circuit and drive circuitry；First radio communication circuit receives the second radio communication circuit and sent
Feedback signal and the control signal that sends of remote control, the first radio communication circuit believes to remote control emitter running status
Number；First voltage detection circuit is used for the voltage for detecting main switch drain-source two ends；Remote control is wireless according to receive first
Whether the plant running status signal that telecommunication circuit is sent, display device output voltage, output current and realize that no-voltage is open-minded；
Remote control makes the first single chip machine controlling circuit select Isobarically Control or constant current control to the first radio communication circuit emissioning controling signal
System；The voltage at second voltage detection electric circuit inspection clamp capacitor two ends, when the voltage increase for detecting clamp capacitor two ends, first
The control signal of auxiliary switch is changed into high level by single chip machine controlling circuit, and auxiliary switch realizes that no-voltage is open-minded, works as pincers
During the voltage increase at position electric capacity two ends, primary side inductance is charged by the second diode for clamp capacitor, and the second diode current flow is auxiliary
The voltage for helping switching tube drain-source two ends is 0, and auxiliary switch realizes that no-voltage is open-minded；Secondary controls circuit by sample circuit, the
Two single chip machine controlling circuits, the second accessory power supply and the second radio communication circuit composition, for anti-to primary-side-control circuit transmission
Feedback signal, the output voltage and output current of sample circuit detection means；Second singlechip controls circuit according to adopting for receiving
The signal of sample circuit, the second radio communication circuit of control launches feedback signal to the first radio communication circuit；Second accessory power supply
Powered for second singlechip control circuit.
2. the inductively coupled power transfer device according to claim 1 with drop-down auxiliary switch, it is characterised in that：Using
The method that the device realizes electric energy transmission control, specifically includes following steps：
(1) the first secondary, if load needs constant pressure to power, first, is switched to according to load selection control mode and collocation structure
Compensating electric capacity, i.e., using the collocation structure of primary side secondary series connection in parallel, select constant pressure control method；If load needs constant current to supply
Electricity, then switch to the second secondary compensating electric capacity, using primary side secondary in parallel collocation structure in parallel, selects constant current control method；
If neither selection constant pressure is powered, constant current-supplying is not also selected, then device is standby, until selection power supply mode；
(2) if, selection constant pressure power, first using pulse width modulation soft start, give original switching frequency, maintained switch frequency
Rate is constant, and ON time is gradually increased to setting value, and output voltage reaches setting voltage, when device output voltage is unstable,
Regulated output voltage is controlled by pulse frequency modulated；The output voltage signal detected is sent to the second monolithic by sample circuit
Machine controls circuit, and second singlechip controls circuit to be changed according to the difference of output voltage, by the second radio communication circuit to original
The first radio communication circuit that side control circuit is sent in different control signals, primary-side-control circuit receives the second channel radio
The signal that letter circuit is sent, then the first single chip machine controlling circuit is passed to, the first single chip machine controlling circuit carrys out opening for adjusting apparatus
Close frequency；If output voltage becomes big, second singlechip control circuit can be by the second radio communication circuit to primary-side-control circuit
Send the signal of increase switching frequency；If output voltage reduces, second singlechip control circuit passes through the second radio communication circuit
The signal for reducing switching frequency is sent to primary-side-control circuit, so that the output voltage of stabilising arrangement；When second voltage detects electricity
Road detects the voltage increase at clamp capacitor two ends, and the control signal of auxiliary switch is changed into high by the first single chip machine controlling circuit
Level, auxiliary switch realizes that no-voltage is open-minded, and whether detection main switch is that no-voltage is open-minded, and main switch is if not zero electricity
Press off logical, realize that no-voltage is open-minded by PWM controls, when the drive signal of main switch is changed into high level from low level, the
The voltage at one voltage detecting circuit detection main switch drain-source two ends, if the voltage at main switch drain-source two ends is not 0, that is, does not have
Realize that no-voltage is open-minded, then the first single chip machine controlling circuit reduces the dutycycle of main switch；If main switch drain-source two ends
Voltage is 0, that is, realizes that no-voltage is open-minded, then the dutycycle of main switch is constant；After main switch realizes that no-voltage is opened,
Whether judgment means shut down, if providing stopping signal, device is stopped；If not providing stopping signal, detect defeated again
Go out voltage, repeat the above steps；
(3) if, selection constant current-supplying, first using PWM soft starts, that is, give original switching frequency, maintained switch frequency is constant,
ON time is gradually increased to setting value, and output current reaches setting electric current；When the output current of device is unstable, pass through
The output current signal detected is sent to second singlechip control circuit by the stable output current of PFM controls, sample circuit, the
Two single chip machine controlling circuits send difference by the second radio communication circuit according to the change of output current to primary-side-control circuit
Control signal, the first radio communication circuit in primary-side-control circuit receives the signal that the second radio communication circuit is sent,
The first single chip machine controlling circuit, the switching frequency of the first single chip machine controlling circuit adjusting apparatus are passed to again；If output current becomes
Greatly, second singlechip control circuit sends the letter of increase switching frequency by the second radio communication circuit to primary-side-control circuit
Number；If output current reduces, second singlechip control circuit is sent by the second radio communication circuit to primary-side-control circuit to be subtracted
The signal of small switching frequency, so that the output current of stabilising arrangement；When second voltage detects electric circuit inspection to clamp capacitor two ends
Voltage increase, the control signal of auxiliary switch is changed into high level by the first single chip machine controlling circuit, and auxiliary switch is realized
No-voltage is open-minded, and whether detection main switch is that no-voltage is open-minded, and main switch passes through PWM controls if not no-voltage is open-minded
Realize that no-voltage is open-minded, when the drive signal of main switch is changed into high level from low level, first voltage detection electric circuit inspection
The voltage at main switch drain-source two ends, if the voltage at main switch drain-source two ends is not 0, that is, it is open-minded to be not carried out no-voltage, then
First single chip machine controlling circuit reduces the dutycycle of main switch；If the voltage at main switch drain-source two ends is 0, that is, realize zero
Voltage is open-minded, then the dutycycle of main switch is constant；After main switch realizes that no-voltage is opened, whether judgment means shut down,
If providing stopping signal, device is stopped；If not providing stopping signal, output current is detected again, repeats above-mentioned step
Suddenly；Whole device by the control mode regulated output voltage or output current of frequency conversion+variable duty cycle, while make main switch and
Auxiliary switch realizes that no-voltage is open-minded, reaches the purpose of inductively coupled power transfer regulation and control.
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| CN107707034A (en) * | 2017-10-25 | 2018-02-16 | 西南交通大学 | A kind of transmitting terminal dynamic tuning device and method based on twin inverter |
| CN107742980A (en) * | 2017-10-30 | 2018-02-27 | 成都芯源系统有限公司 | Voltage stabilizer, and loop automatic adjusting system and method thereof |
| CN112436615A (en) * | 2020-12-02 | 2021-03-02 | 青岛大学 | Magnetic integrated coupling parallel single-tube wireless electric energy transmission device and constant voltage control method thereof |
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| CN107742980B (en) * | 2017-10-30 | 2020-01-17 | 成都芯源系统有限公司 | Voltage stabilizer, and loop automatic adjusting system and method thereof |
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