CN206349818U - A kind of wireless electric energy transmission device - Google Patents
A kind of wireless electric energy transmission device Download PDFInfo
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- CN206349818U CN206349818U CN201621367879.4U CN201621367879U CN206349818U CN 206349818 U CN206349818 U CN 206349818U CN 201621367879 U CN201621367879 U CN 201621367879U CN 206349818 U CN206349818 U CN 206349818U
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- impedance matching
- transmitting
- electric energy
- matching circuit
- transmission device
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Abstract
The utility model belongs to electromagnetic field technology application field, more particularly to a kind of wireless electric energy transmission device, and device includes emitter and reception device；The emitter includes AC power unit, current rectifying and wave filtering circuit, radio frequency amplifier, transmitting impedance matching circuit and the transmitting coil being linked in sequence；The reception device includes the receiving coil, reception impedance matching circuit, rectifier being linked in sequence.The utility model uses magnetic coupling resonance principle, and the efficiency of transmission of radio energy is of a relatively high.
Description
Technical field
The utility model belongs to electromagnetic field technology field, more particularly to a kind of wireless electric energy transmission device.This practicality is new
Type can be used for the charging of the consumer electronic products such as power electrical apparatus, mobile phone, digital camera, the notebook computer of international space station.
Background technology
" wireless power transmission " is to convert electrical energy into that the energy of radio transmission can be carried out using a kind of special installation, is passed through
Transmission between transmitting and receiving coil, in receiving terminal by this energy conversion telegram in reply energy, realizes the power supply of electrical equipment.Nowadays
Wireless power transmission technology is roughly divided into：Induction, electromagnetic radiation formula and electromagentic resonance formula.Induction transmission range
Closely, it is less efficient.Electromagnetic radiation formula long transmission distance, but efficiency is low, and cost is high.Electromagentic resonance formula wireless power transmission technology is passed
It is defeated apart from moderate, efficiency is higher, and application is big.
In recent years, close coupling magnetic resonance (the Strongly Coupled Magnetic proposed by the Massachusetts Institute of Technology
Resonaces it is) theoretical, being wirelessly transferred for electric energy can be realized under relatively large distance.The technology relies primarily on magnetic field transmission energy, leads to
The coupling in magnetic field between resonance coil is crossed, being wirelessly transferred for electric energy is realized by the resonance between transmitting and receiving coil.The technology
Transmission range can reach meter level distance, and efficiency of transmission is of a relatively high.
The impedance matching circuit of existing wireless electric energy transmission device and the design object being directed to are all relatively simple, emission lines
The restrictive condition of circle and receiving coil is not abundant enough, Shortcomings in design.The utility model proposes transmitting regarding to the issue above
Impedance matching circuit and receive impedance matching circuit exists simultaneously, for design object be set to maximum transmission power and transmit effect
Rate, determines the restrictive condition between transmitting coil and receiving coil, optimizes what existing wireless electric energy transmission device was present comprehensively
Problem.
Utility model content
In view of the above-mentioned problems, the utility model is based on coupled resonance principle there is provided a kind of wireless electric energy transmission device, can be with
In relatively remote interior electrical equipment and consumer electronic products progress wireless charging for international space station.
The technical scheme that the utility model is used to achieve these goals is：A kind of wireless electric energy transmission device, bag
Include emitter and reception device；The emitter includes the AC power unit being linked in sequence, current rectifying and wave filtering circuit, radio frequency
Amplifier, transmitting impedance matching circuit and transmitting coil；The reception device includes receiving coil, the reception impedance being linked in sequence
Match circuit, rectifier.
The transmitting impedance matching circuit includes the AC power being sequentially connected in series, electric capacity CP, inductance LP, resistance RPAnd constitute
Loop；Resistance RPIt is in parallel with radio frequency amplifier；AC power is in parallel with transmitting coil.
It is described to receive the resistance R that impedance matching circuit includes being sequentially connected in seriesL, resistance RS, inductance LS, electric capacity CSAnd constitute back
Road；Electric capacity CsIt is in parallel with rectifier；Resistance RLIt is in parallel with transmitting coil.
The inductance LPWith inductance LSIt is arranged side by side and parallel.
The transmitting coil is arranged side by side and parallel with receiving coil.
The transmitting coil and receiving coil are parallel with electric capacity respectively.
The beneficial effects of the utility model are：
1. the utility model can be relatively interior for international space station power supply unit and electronic product progress in life at a distance
Wireless charging, distance reaches meter level scope.Relative to traditional electromagnetic induction charged mode, wireless power transmission is significantly increased
Distance.
2. the utility model uses magnetic coupling resonance principle, for traditional electromagnetic induction principle charge prepd,
The efficiency of transmission of radio energy is of a relatively high.The utility model is fitted for the impedance matching in launching circuit and reception loop
When regulation control, increase substantially its electric energy efficiency of transmission.To sum up 2 points, utilization rate of electrical of the present utility model is significantly
Improve.
3. the profile of emitter of the present utility model and reception device, size can be different, facilitate the peace of emitter
Dress, placement, also allow for the placement of reception device.
4. emitter of the present utility model and reception device can be minimized, it can be carried out according to the size of power supply unit
Appropriate adjustment, increases the application of wireless electric energy transmission device.
5. it can ensure system resonance frequencies by adjusting control transmitting impedance matching circuit and receiving impedance matching circuitThe equiva lent impedance of launching circuit series resonance is approximately 0, and the equiva lent impedance of parallel resonance is infinite
Greatly.Wireless energy transfer system reaches resonant condition.The transmission performance of wireless energy transfer system can be effectively improved.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model；
Fig. 2 is principle schematic of the present utility model；
Fig. 3 is transmitting impedance matching circuit of the present utility model and receives impedance circuit figure.
Embodiment
The utility model is elaborated below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, magnet coupled resonant type wireless power transfer, including emitter and reception device；Institute
Stating emitter includes AC power unit, current rectifying and wave filtering circuit, radio frequency amplifier, transmitting impedance matching circuit and emission lines
Circle；The reception device mainly includes receiving coil, receives impedance matching circuit, rectifier.Produced by AC power unit
Alternating current is filtered by rectifier filter, is entered back into radio frequency amplifier and is amplified, and is entered by launching impedance matching circuit
After row impedance matching, reception device is transmitted to by transmitting coil；Reception device passes through between receiving coil and transmitting coil
Resonance effect, electric current passes to load after receiving impedance matching circuit and carrying out impedance matching by rectifier, realizes wireless
Electric energy is transmitted.Unlimited electric energy transmission dress can effectively be increased by the impedance matching for adjusting control launching circuit and receiving in loop
Put the efficiency and distance of transmission.Can be relatively interior for space station power supply unit and electronic product progress wireless charging in life at a distance
Electricity, distance reaches meter level scope.Relative to traditional electromagnetic induction charged mode, the distance of wireless power transmission is significantly increased.
Described rectifying and wave-filtering be by 220V AC rectifications be direct current.
Described radio frequency amplifier is to be amplified direct current.
Described regulation control impedance matching is to be optimal the emission effciency of launching circuit.
Parallel side-by-side is needed to place when described transmitting coil and receiving coil charging.
The rectifier of described reception device is that direct current is then converted into alternating current powering load.
Alternating current by after rectifying and wave-filtering and power amplifier by suitably adjusting the impedance matching in launching circuit then
Into transmitting coil, adjusted by the interaction of transmitting coil and receiving coil, then to the impedance matching being received back in road
Section, by passing to load after rectifier.
The transmitting coil is arranged side by side and parallel with receiving coil.
The transmitting coil and receiving coil are parallel with electric capacity respectively.
The electricity resonance of energy signal frequency, transmitting coil and receiving coil that the emitter and reception device are produced
Frequency is consistent respectively.
Inductance capacitance inside launching circuit and regulation control mainly two loops of regulation for receiving the impedance matching in loop
The size of value, reaches the optimum state of two loop electric energy transmission.
As shown in figure 3, transmitting impedance matching circuit includes the AC power being sequentially connected in series, electric capacity CP, inductance LP, resistance RP
And constitute loop；Resistance RPIt is in parallel with radio frequency amplifier；AC power is in parallel with transmitting coil.Receiving impedance matching circuit includes
The resistance R being sequentially connected in seriesL, resistance RS, inductance LS, electric capacity CSAnd constitute loop；Electric capacity CsIt is in parallel with rectifier；Resistance RLWith transmitting
Coils from parallel connection of coils.M represents mutual inductance.
The equiva lent impedance in impedance matching loop is respectively：
ZP、ZSThe impedance of transmitting impedance matching circuit is represented respectively, receive the impedance of impedance matching circuit.
When system (transmitting impedance matching circuit and reception impedance matching circuit) resonant frequency
When, the equiva lent impedance of launching circuit series resonance is approximately 0, and the equiva lent impedance of parallel resonance is infinitely great.By adjusting impedance
With making system reach resonant condition, the transmission performance of wireless energy transfer system reaches best.
Claims (5)
1. a kind of wireless electric energy transmission device, it is characterised in that：Including emitter and reception device；The emitter includes
AC power unit, current rectifying and wave filtering circuit, radio frequency amplifier, transmitting impedance matching circuit and the transmitting coil being linked in sequence；Institute
State receiving coil, reception impedance matching circuit, rectifier that reception device includes being linked in sequence；
The transmitting impedance matching circuit includes the AC power being sequentially connected in series, electric capacity CP, inductance LP, resistance RPAnd constitute loop；
Resistance RPIt is in parallel with radio frequency amplifier；AC power is in parallel with transmitting coil.
2. wireless electric energy transmission device according to claim 1, it is characterised in that the reception impedance matching circuit includes
The resistance R being sequentially connected in seriesL, resistance RS, inductance LS, electric capacity CSAnd constitute loop；Electric capacity CsIt is in parallel with rectifier；Resistance RLWith transmitting
Coils from parallel connection of coils.
3. wireless electric energy transmission device according to claim 1, it is characterised in that the inductance LPWith inductance LSSide by side.
4. wireless electric energy transmission device according to claim 1, it is characterised in that the transmitting coil and receiving coil are simultaneously
Row.
5. wireless electric energy transmission device according to claim 1, it is characterised in that the transmitting coil and receiving coil point
Electric capacity is not parallel with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621367879.4U CN206349818U (en) | 2016-12-13 | 2016-12-13 | A kind of wireless electric energy transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621367879.4U CN206349818U (en) | 2016-12-13 | 2016-12-13 | A kind of wireless electric energy transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206349818U true CN206349818U (en) | 2017-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621367879.4U Active CN206349818U (en) | 2016-12-13 | 2016-12-13 | A kind of wireless electric energy transmission device |
Country Status (1)
| Country | Link |
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| CN (1) | CN206349818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040050A (en) * | 2016-12-13 | 2017-08-11 | 中国科学院沈阳自动化研究所 | A kind of wireless electric energy transmission device and transmission method |
-
2016
- 2016-12-13 CN CN201621367879.4U patent/CN206349818U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040050A (en) * | 2016-12-13 | 2017-08-11 | 中国科学院沈阳自动化研究所 | A kind of wireless electric energy transmission device and transmission method |
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