CN108599390A - A kind of radio energy transmission system for realizing former secondary side communication using E class A amplifier As - Google Patents
A kind of radio energy transmission system for realizing former secondary side communication using E class A amplifier As Download PDFInfo
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- CN108599390A CN108599390A CN201810247169.5A CN201810247169A CN108599390A CN 108599390 A CN108599390 A CN 108599390A CN 201810247169 A CN201810247169 A CN 201810247169A CN 108599390 A CN108599390 A CN 108599390A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 238000004891 communication Methods 0.000 title claims abstract description 20
- 230000008878 coupling Effects 0.000 claims description 37
- 238000010168 coupling process Methods 0.000 claims description 37
- 238000005859 coupling reaction Methods 0.000 claims description 37
- 230000008054 signal transmission Effects 0.000 claims description 21
- 238000004804 winding Methods 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 3
- 238000007600 charging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000024241 parasitism Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H04B5/24—
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- H04B5/79—
Abstract
The invention discloses a kind of radio energy transmission system for realizing former secondary side communication using E class A amplifier As, system is based on E class A amplifier A modelled signal radiating circuits, and component number is few, simple in structure；E class A amplifier As circuit realizes that frequency-selecting and signal are amplified by the series resonance of capacitance and inductance, is highly suitable for power/signal composite transmission system.Signal waveform can be loaded on power waveform by the present invention, transmitted with a power coil, reduced the component number of system and the complexity of system, also a save cost, and complicated wireless communication protocol is not needed, software complexity is reduced, and there is high real-time.
Description
Technical field
The invention belongs to wireless power/signal multiplexing of transmission technical fields, and in particular to a kind of to be realized using E class A amplifier As
The radio energy transmission system of former pair side communication.
Background technology
In recent years, wireless power transmission technology continues to develop, and has had the technology of many maturations to today, can be with
Make up many deficiencies of traditional power supply mode.Wireless power transmission is transmitted relative to traditional electric energy using conducting wire, certain
Aspect has overwhelming advantage.Such as in high pressure or high-power, switching on and off circuit and can make physically
At electric spark, influences service life of equipment and even cause safety accident；In seabed or forbid the place of spark, to supply using cable
Electricity can not only have equipment harsh requirement, and be also to avoid as possible in safe level.Wireless power transmission skill
Art has caused the extensive concern of whole world researcher, and has been applied to mobile device, electric vehicle etc. many
Field.
Radio energy transmission system is charging the battery or there are charged states when multiple receiving terminals, needed according to battery
Power emission end is adjusted with the different capacities of multiple receiving terminals, thus wireless energy transfer system need one it is included
Communication system carries out relevant control.
Although power line communication technology is widely used in traditional corded power supply system, when transformer device structure goes out
When now in a link, communication is just cannot achieve, therefore it is not suitable for radio energy transmission system.And it commonly wirelessly communicates
Equipment such as WiFi, bluetooth etc. also cannot be satisfied proper real-time Communication for Power and full-duplex communication, therefore be not suitable for use in nothing
The communication system of line electric energy transmission, and power link and data link interaction, can also make electric power and data transmission
Complicated for operationization.Problem above can be then well solved with the coupling coil of power transmission, can not only be met logical in real time
The requirements such as letter and full-duplex communication, the influence to electric energy transmission are also relatively small.
It is mutual that the Chinese patent of Publication No. CN106410978A proposes coupling coil in a kind of radio energy transmission system
Feel the On-line Measuring Method of coefficient, which realizes shared nothing by coupling communication module in former and deputy side resonant tank
The energy and signal multiplexing of transmission of line electric energy transmission system coupling coil are not necessarily to introduce additional communication channels or coil, just real
Communication signal transmissions are showed.
Invention content
In view of above-mentioned, the present invention provides a kind of wireless power transmission systems realizing former secondary side communication using E class A amplifier As
System, can realize the transmitting of signal in wireless energy transfer system, logical suitable for wireless power/signal composite transmission system
Letter.
A kind of radio energy transmission system for realizing former secondary side communication using E class A amplifier As, including primary side unit and secondary side
Unit, primary side unit couple the wireless transmission for realizing electric energy and signal with secondary side unit by power coil；Wherein, the primary side
Unit includes primary side power circuit and signal transmission circuit, and the secondary power circuit when unit includes secondary and signal receive electricity
Road, between signal transmission circuit and primary side power circuit by the first coupling inductance realize signal transmission, secondary side power circuit with
Signal transmission is realized by the second coupling inductance between signal receiving circuit；The signal transmission circuit is using E class A amplifier A electricity
Line structure, for being obtained with same phase information after the drive signal for carrying phase information is carried out frequency-selecting and power amplification
Sine wave signal, and the sine wave signal is transmitted to by primary side power circuit by the first coupling inductance, and then by primary side power
Circuit is transmitted to secondary side power circuit by power coil, is finally transmitted to letter by the second coupling inductance by secondary side power circuit
Number receiving circuit is demodulated；
The signal transmission circuit include DC power supply, resonant inductance L2, resonant capacitance C0, with backward dioded D
Switching tube S, capacitance C1, inductance L0 and inductance L1；Wherein：Resonant inductance L2 is the primary side winding of the first coupling inductance, directly
The anode in galvanic electricity source is connected with one end of inductance L0, the other end of inductance L0 and one end of switching tube S, capacitance C1 one end and
One end of resonant capacitance C0 is connected, and the other end of resonant capacitance C0 is connected with one end of inductance L1, the other end of inductance L1 with it is humorous
One end i.e. Same Name of Ends of the first coupling inductance primary side winding of inductance L2 of shaking is connected, and the cathode of DC power supply is another with switching tube S's
The other end of one end, the other end of capacitance C1 and resonant inductance L2 is connected, and the control pole of switching tube S receives external control chip
Drive signal with phase information is provided.
Further, the drive signal that the control chip provides is square-wave signal, and control chip uses PSK (phase shift keys
Control) or the modulation system of DPSK (differential phase keying (DPSK)) phase information is loaded onto on the square-wave signal.
Further, drive signal is converted into sine wave signal and is loaded onto the first coupling electricity by the signal transmission circuit
In the primary side winding of sense, the power of the sine wave signal is much larger than the power of drive signal.
Further, sine wave signal is injected primary side power circuit by the vice-side winding of first coupling inductance, i.e., will
The signal waveform of high frequency is added on the power waveform of low frequency and is transmitted to secondary side power circuit by power coil.
Further, the signal transmission circuit by the series resonance of capacitance and inductance to realize frequency-selecting and signal power
Amplification.
Based on the above-mentioned technical proposal, advantageous effects of the invention are as follows：
(1) the present invention is based on E class A amplifier A modelled signal radiating circuits, component number is few, simple in structure.
(2) signal waveform can be loaded on power waveform by the present invention, transmitted with a power coil, reduced system
Component number and system complexity, and also a save cost.
(3) present invention does not need complicated wireless communication protocol, reduces software complexity, and with high real-time
Property.
Description of the drawings
Fig. 1 is the electrical block diagram of radio energy transmission system of the present invention.
Fig. 2 (a) is the switching tube drive signal waveform figure with phase information.
Fig. 2 (b) is the switching tube drive signal waveform figure without phase information.
Fig. 3 (a) is the voltage oscillogram at the both ends coupling inductance winding L2.
Fig. 3 (b) is close-up schematic view of the coupling inductance winding L2 both end voltages waveform in phase hit.
Fig. 4 (a) is the voltage oscillogram at the both ends coupling inductance winding Lr2.
Fig. 4 (b) is close-up schematic view of the coupling inductance winding Lr2 both end voltages waveform in phase hit.
Fig. 5 (a) is the voltage oscillogram at the both ends coupling inductance winding L3.
Fig. 5 (b) is close-up schematic view of the coupling inductance winding L3 both end voltages waveform in phase hit.
Specific implementation mode
In order to more specifically describe the present invention, below in conjunction with the accompanying drawings and specific implementation mode is to technical scheme of the present invention
It is described in detail.
The present invention realizes the radio energy transmission system of former secondary side communication, including primary side unit and pair using E class A amplifier As
Side unit, primary side unit are coupled by power coil to realize the wireless transmission of electric energy with secondary side unit；Wherein, primary side unit packet
Include primary side power circuit and signal transmission circuit, secondary power circuit and signal receiving circuit when unit includes secondary, signal transmitting
Signal transmission, secondary side power circuit and signal receiving circuit are realized by the first coupling inductance between circuit and primary side power circuit
Between pass through the second coupling inductance realize signal transmission；Signal transmission circuit uses E class A amplifier A circuit structures, for that will carry
The drive signal of phase information obtains the sine wave signal with same phase information after carrying out frequency-selecting and power amplification, and passes through
The sine wave signal is transmitted to primary side power circuit by the first coupling inductance, and then is passed by power coil by primary side power circuit
Secondary side power circuit is transported to, being finally transmitted to signal receiving circuit by the second coupling inductance by secondary side power circuit is solved
It adjusts；
As shown in Figure 1, the resonant inductance in E class A amplifier A circuits is replaced with the first coupling inductance primary side winding L2, resonance
Capacitance is C0, and E class A amplifier As circuit is generated sinusoidal current by concatenated resonant inductance L2 and resonant capacitance C0 and sent out with this
The effect for waving frequency-selecting, the inductance L0 being connected directly with DC power supply Vdc serve as current source；Due to there is parasitic electricity in resonance circuit
Resistance, therefore the sinusoidal current generated has direct current biasing.
If the drive signal of switch S is the square-wave signal of duty ratio 50%, flows through the electric current of C0 and L2 then and be and square wave
Sinusoidal current of the signal with frequency.When switch S is connected, sinusoidal current flows through switch S, and capacitance C1 both end voltages are 0；Switch S is closed
When disconnected, original sinusoidal current can be transferred to capacitance C1 in switch S, and give capacitance C1 chargings, when the sinusoidal current in C1 changes
Capacitance C1 discharges when direction, and when being discharged to 0, the parasitic backward dioded D of switch S is connected, and sinusoidal current is shifted from capacitance C1
To parasitic backward dioded D until switch S is connected again.
The drive signal of switching device in the present invention in E class A amplifier As circuit is the square wave model with phase information.E
Load is on the first coupling inductance primary side winding L2 after the signal of switching device is carried out frequency-selecting and power amplification by class A amplifier A, L1
It is in order to enable switch S is worked in a manner of Sofe Switch and the inductance that adds, for adjusting impedance.The secondary side of first coupling inductance around
The coupling of resonant inductance L2 in group Lr2 and E class A amplifier A circuits, and the power waveform for low frequency that the signal waveform of high frequency is added to
It above and by power coil transmits, signal is received eventually by the second coupling inductance winding L3 and Lr3.
In present implementation, the driving frequency of switch S is 2MHz, and the modulation system of signal is 2PSK, waveform such as Fig. 2
(a) shown in, the waveform in Fig. 2 (a) carries digital information " 010 ", and Fig. 2 (b) is the 2MHz drive waveforms for not carrying information, is used for
It is compared with Fig. 2 (a).Vdc=20V, L0=30 μ H, C0=C1=1nF, L1=0.1 μ H, coupling inductance primary side winding L2 are certainly
Feel 7.5 μ H, the dead resistance of series connection with it is 2 Ω, 7.5 μ H of coupling inductance vice-side winding Lr2 self-inductions, the parasitism electricity of series connection with it
Resistance is 2 Ω, the former pair side coefficient of coup 0.9.Shown in the voltage waveform at the both ends L2 such as Fig. 3 (a), waveform frequency be 2MHz and with drive
Dynamic signal carries identical digital information " 010 ", and the switching of phase can also be found out in Fig. 3 (b), the meeting in Phase-switching
The decaying of signal amplitude is caused, but amplitude can gradually be restored after switching.
The working frequency of power transmission is 85KHz, and the coefficient of coup of power transmission coil is 0.2, and former pair side self-induction is
100 μ H, concatenated dead resistance are also 2 Ω, the same Lr2 of parameter of capacitance C2=C3=35nF, Lr3 and L3, the coefficient of coup
It is 0.9.Shown in Lr2 both end voltages waveform such as Fig. 4 (a), with the waveform in Fig. 3 (a) in addition to amplitude indistinction, phase hit
When waveform such as Fig. 4 (b) shown in；Shown in the voltage waveform at the both ends L3 such as Fig. 5 (a), with waveform in Fig. 3 (a) in addition to amplitude also without
Difference, shown in waveform such as Fig. 5 (b) when phase hit；Waveform in Fig. 4 (a) and Fig. 5 (a) carry with it is identical in Fig. 2
Digital information " 010 ", therefore signal can succeed and be transferred to signal receiving end from the driving of switch S, only amplitude has decaying.
The above-mentioned description to embodiment can be understood and applied the invention for ease of those skilled in the art.
Person skilled in the art obviously easily can make various modifications to above-described embodiment, and described herein general
Principle is applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, the improvement made for the present invention and modification all should be in protection scope of the present invention
Within.
Claims (5)
1. a kind of radio energy transmission system for realizing the secondary side communication of original using E class A amplifier As, including primary side unit and secondary side list
Member, primary side unit couple the wireless transmission for realizing electric energy and signal with secondary side unit by power coil；Wherein, the primary side list
Member includes primary side power circuit and signal transmission circuit, secondary power circuit and the signal receiving circuit when unit includes secondary,
Signal transmission, secondary side power circuit and signal are realized by the first coupling inductance between signal transmission circuit and primary side power circuit
Signal transmission is realized by the second coupling inductance between receiving circuit；It is characterized in that：The signal transmission circuit is put using E classes
Big device circuit structure, for obtaining carrying same phase after the drive signal for carrying phase information is carried out frequency-selecting and power amplification
The sine wave signal of information, and the sine wave signal is transmitted to by primary side power circuit by the first coupling inductance, and then by original
The power circuit when power circuit is transmitted to secondary by power coil is finally passed by secondary side power circuit by the second coupling inductance
Signal receiving circuit is transported to be demodulated；
The signal transmission circuit includes DC power supply, resonant inductance L2, resonant capacitance C0, the switch with backward dioded D
Pipe S, capacitance C1, inductance L0 and inductance L1；Wherein：Resonant inductance L2 is the primary side winding of the first coupling inductance, direct current
The anode in source is connected with one end of inductance L0, the other end of inductance L0 and one end of switching tube S, one end of capacitance C1 and resonance
One end of capacitance C0 is connected, and the other end of resonant capacitance C0 is connected with one end of inductance L1, the other end and the resonance electricity of inductance L1
One end i.e. Same Name of Ends of the first coupling inductance primary side winding for feeling L2 is connected, the cathode of DC power supply and the other end of switching tube S,
The other end of capacitance C1 and the other end of resonant inductance L2 are connected, and the control pole of switching tube S receives external control chip and provides
Drive signal with phase information.
2. radio energy transmission system according to claim 1, it is characterised in that：The driving letter that the control chip provides
Number it is square-wave signal, phase information is loaded onto on the square-wave signal by control chip using the modulation system of PSK or DPSK.
3. radio energy transmission system according to claim 1, it is characterised in that：The signal transmission circuit believes driving
It number is converted into sine wave signal and is loaded onto in the primary side winding of the first coupling inductance, the power of the sine wave signal is much larger than driving
The power of dynamic signal.
4. radio energy transmission system according to claim 1, it is characterised in that：The secondary side of first coupling inductance around
Sine wave signal is injected primary side power circuit by group, i.e., the signal waveform of high frequency is added on the power waveform of low frequency and is passed through
Power coil is transmitted to secondary side power circuit.
5. radio energy transmission system according to claim 1, it is characterised in that：The signal transmission circuit passes through capacitance
Series resonance with inductance is to realize that frequency-selecting and signal power are amplified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810247169.5A CN108599390A (en) | 2018-03-23 | 2018-03-23 | A kind of radio energy transmission system for realizing former secondary side communication using E class A amplifier As |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810247169.5A CN108599390A (en) | 2018-03-23 | 2018-03-23 | A kind of radio energy transmission system for realizing former secondary side communication using E class A amplifier As |
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| CN108599390A true CN108599390A (en) | 2018-09-28 |
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| CN201810247169.5A Pending CN108599390A (en) | 2018-03-23 | 2018-03-23 | A kind of radio energy transmission system for realizing former secondary side communication using E class A amplifier As |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962634A (en) * | 2019-12-18 | 2020-04-07 | 西南交通大学 | Magnetic suspension train non-contact auxiliary power supply device and method based on high-frequency current injection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10256957A (en) * | 1997-03-13 | 1998-09-25 | Nagano Japan Radio Co | Device and system for transmitting power |
| CN103595145A (en) * | 2013-10-31 | 2014-02-19 | 浙江大学 | System for achieving high-speed communication and wireless energy transmission on basis of public inductive coupling |
| CN104810930A (en) * | 2015-03-25 | 2015-07-29 | 武汉大学 | Multi-antenna magnetic-resonance super-narrowband wireless energy and signal co-frequency transmission system |
-
2018
- 2018-03-23 CN CN201810247169.5A patent/CN108599390A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10256957A (en) * | 1997-03-13 | 1998-09-25 | Nagano Japan Radio Co | Device and system for transmitting power |
| CN103595145A (en) * | 2013-10-31 | 2014-02-19 | 浙江大学 | System for achieving high-speed communication and wireless energy transmission on basis of public inductive coupling |
| CN104810930A (en) * | 2015-03-25 | 2015-07-29 | 武汉大学 | Multi-antenna magnetic-resonance super-narrowband wireless energy and signal co-frequency transmission system |
Non-Patent Citations (3)
| Title |
|---|
| JIANDE WU ET AL.: "Wireless Power and Data Transfer via a Common Inductive Link Using Frequency Division Multiplexing", 《IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS》 * |
| 曾智强等: "E 类放大器在远距离无线电能传输系统中的应用", 《电气开关》 * |
| 赵崇文: "一种基于电磁耦合的无线能量/信号频分复合传输方法研究", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962634A (en) * | 2019-12-18 | 2020-04-07 | 西南交通大学 | Magnetic suspension train non-contact auxiliary power supply device and method based on high-frequency current injection |
| CN110962634B (en) * | 2019-12-18 | 2021-06-29 | 西南交通大学 | Magnetic suspension train non-contact auxiliary power supply device and method based on high-frequency current injection |
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Application publication date: 20180928 |