CN106487105A - A kind of magnet coupled resonant type wireless power transfer of modified line coil structures - Google Patents
A kind of magnet coupled resonant type wireless power transfer of modified line coil structures Download PDFInfo
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- CN106487105A CN106487105A CN201611000664.3A CN201611000664A CN106487105A CN 106487105 A CN106487105 A CN 106487105A CN 201611000664 A CN201611000664 A CN 201611000664A CN 106487105 A CN106487105 A CN 106487105A
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Abstract
The invention discloses a kind of magnet coupled resonant type wireless power transfer of modified line coil structures, it is connected with high-frequency inverter circuit, type transformer coil structure resonance coupling unit, high-frequency rectification circuit, inverter circuit and its load in turn including DC source；Wherein said type transformer coil structure resonance coupling unit is respectively arranged with the wireless connection of two loop constructions and four loop constructions, being provided with transmitting coil and receiving coil in two loop construction resonance coupling units is resonance coil, when resonance coil is with identical hunting of frequency, receiving coil is transferred energy to by coupling, realizes wireless power transmission；Being provided with driving resonance coil, transmitting coil, receiving coil and load resonant coil in four loop construction resonance coupling units is resonance coil, when resonance coil is with identical hunting of frequency, loading coil is transferred energy to by electromagnetic coupled, realizes wireless power transmission；And make wireless electric energy transmission device efficiency of transmission reach maximization by different transmission ranges using different loop constructions.
Description
Technical field
The present invention relates to a kind of wireless electric energy transmission device, especially a kind of magnet coupled resonant type wireless of modified line coil structures
Power transfer.
Background technology
With the development of wireless power transmission technology, increasing field needs employing wireless electric energy transmission technology to transmit
Electric energy.Current wireless power transmission technology mainly has three kinds, is magnetic induction coupled modes, magnetic coupling resonance manner and micro- respectively
Wave radiation mode.For the application of low-power wireless electric energy transmission, compared to magnetic induction coupled modes, magnetic coupling resonance manner has
There is longer effective propagation path, and compared with microwave radiation mode, there is higher efficiency of transmission.Although magnetic coupling resonance side
Formula have the advantages that above, but its efficiency of transmission can change with the change of distance it is impossible to remain at very high level.
Theory analysis and it is demonstrated experimentally that based on magnet coupled resonant type wireless electric energy transmission technology wireless power transmission dress
Put, according to the difference of loop construction, its efficiency of transmission is also different with the variation tendency of transmission range.
The wireless electric energy transmission device of two loop constructions, its efficiency of transmission reduces with the increase of transmission range；Work as transmission
When distance is more than coil radius, efficiency of transmission reduces rapidly.
The wireless electric energy transmission device of four loop constructions, its efficiency of transmission, when transmission range is equal to coil radius, reaches
Maximum.When transmission range is less than coil radius, efficiency of transmission increases with the increase of transmission range；When transmission range is more than
Coil radius, be less than effective propagation path, the computing formula of effective propagation path：When, transmission effect
Rate reduces with the increase of transmission range.
《The research of the radio energy transmission system based on magnetic coupling resonance》Employed in two loop constructions, exist asks
Topic is that efficiency of transmission is higher when wireless transmission distance is less than coil radius, and wireless transmission distance is more than coil radius, is less than
During coil diameter, efficiency of transmission is relatively low, and wireless transmission distance is more than coil diameter, then efficiency of transmission is substantially zeroed.《Double relayings are no
The modeling of line electric energy transmission system and efficiency of transmission analysis》Four loop constructions of middle employing, there is problems that be wirelessly transferred away from
From during less than coil radius, efficiency of transmission is relatively low, and when wireless transmission distance is more than coil, efficiency of transmission is significantly raised.
Content of the invention
The above-mentioned of magnet coupled resonant type wireless electric energy transmission technology for existing two loop constructions and four loop constructions lacks
Fall into, the present invention provides a kind of magnet coupled resonant type wireless power transfer of modified line coil structures.
For achieving the above object, the present invention adopts the following technical scheme that.
A kind of magnet coupled resonant type wireless power transfer of modified line coil structures, is connected with height in turn including DC source
Frequency inverter circuit, type transformer coil structure resonance coupling unit, high-frequency rectification circuit, inverter circuit and its load；It is characterized in that：Institute
State the wireless connection that type transformer coil structure resonance coupling unit is respectively arranged with two loop constructions and four loop constructions, two loop constructions
Being provided with transmitting coil and receiving coil in resonance coupling unit is resonance coil, when resonance coil is with identical hunting of frequency,
Receiving coil is transferred energy to by coupling, realizes wireless power transmission；It is provided with drive in four loop construction resonance coupling units
Dynamic resonance coil, transmitting coil, receiving coil and load resonant coil are resonance coil, when resonance coil is shaken with identical frequency
When swinging, loading coil is transferred energy to by electromagnetic coupled, realize wireless power transmission；And by adopting in different transmission ranges
Use different loop constructions, make wireless electric energy transmission device efficiency of transmission reach maximization.
Described high-frequency inverter circuit is to be connected by choke induction, signal source, driving chip, switching tube and shunt capacitance successively
Constitute；Described choke induction is to be connected with the input of DC power output end and switching tube respectively；Described signal source and driving
Chip input connects；Described switching tube is connected with driving chip outfan；Described shunt capacitance is connected with paralleled power switches.
Described type transformer coil structure resonance coupling unit is integrated by two loop constructions and four loop construction two parts；Two coils
Structure resonance coupling unit is integrated by launching circuit and reception loop, and launching circuit and reception loop wirelessly connect；Described
It is emitted back towards road and include transmitting coil and resonance capacitance group；Described transmitting coil and capacitance group are connected in series；Described reception loop be by
Receiving coil and resonance capacitances in series connect and constitute；
Four loop construction resonance coupling units are by driving resonant tank, launching circuit, reception loop and loaded resonant tank even
Connect composition；Described driving resonant tank and launching circuit wirelessly connect, and launching circuit and reception loop wirelessly connect, and receive loop
Wirelessly connect with load circuit；Described driving resonant tank includes driving coil and resonant capacitance, described driving coil and resonance
Capacitances in series connects, and described launching circuit is connected and constituted by transmitting coil and resonance capacitances in series, and described reception loop includes
Receiving coil and resonant capacitance, described receiving coil and resonance capacitances in series connect, and described loaded resonant tank is by loading coil
Connect with resonance capacitances in series and constitute.
Described high-frequency rectification circuit is made up of boost inductance, uncontrollable rectifier circuit and filter capacitor；Described boost inductance with
The input of uncontrollable rectifier circuit connects；Described filter capacitor is connected with uncontrollable rectifier circuit in parallel；Described uncontrollable rectifier circuit
It is made up of four Schottky diodes.
Described inverter circuit is to be connected and composed by boost inductance, full bridge inverter；Described boost inductance and full-bridge inverting
The input of circuit connects；Described full bridge inverter includes four MOSFET pipes and four diodes, each MOSFET pipe point
It is not connected with a diode inverse parallel.
Described load is pure resistor load, or impedance load.
For two loop constructions, wireless power transmission distance for transmitting coil and connects described wireless electric energy transmission device
The distance between take-up circle；For four loop constructions, wireless power transmission distance is for driving resonance coil and loading coil
The distance between；When wireless power transmission distance is less than coil radius, using the magnet coupled resonant type wireless electricity of two loop constructions
Can transmitting device.Wireless power transmission distance more than coil radius, less than effective propagation path when, using the magnetic of four loop constructions
Coupled resonance formula wireless electric energy transmission device.
A kind of magnet coupled resonant type wireless power transfer of above-mentioned the provided modified line coil structures of the present invention, sets respectively
It is equipped with two loop construction resonance coupling units and the wireless connection of four loop construction resonance coupling units, two loop construction resonance couplings
Being provided with transmitting coil and receiving coil in conjunction partly is resonance coil, when resonance coil is with identical hunting of frequency, by coupling
Conjunction transfers energy to receiving coil, realizes wireless power transmission；It is provided with driving resonance in four loop construction resonance coupling units
Coil, transmitting coil, receiving coil and load resonant coil are resonance coil, when resonance coil is with identical hunting of frequency,
Loading coil is transferred energy to by electromagnetic coupled, realizes wireless power transmission；When wireless power transmission distance is less than coil
During radius, using the magnet coupled resonant type wireless power transfer of two loop constructions；When wireless power transmission distance is more than line
Circle radius, less than effective propagation path when, using the magnet coupled resonant type wireless power transfer of four loop constructions, by
Different transmission ranges, using different loop constructions, make wireless electric energy transmission device efficiency of transmission reach maximization.
Apparatus of the present invention circuit structure is simple, realizes easily, low cost, and stable and reliable operation has very high use valency
Value and economic benefits.
Brief description
Fig. 1 is apparatus of the present invention theory structure block diagram.
Fig. 2 is apparatus of the present invention theory structure circuit diagram.
Fig. 3 is the present invention two coil principle structural circuit figure.
Fig. 4 is the present invention four coil principle structural circuit figure.
Fig. 5 is that high-frequency inverter circuit of the present invention drives and on-off principle structural circuit figure.
Specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further illustrated.
Implement a kind of magnet coupled resonant type wireless power transfer of modified line coil structures, described wireless electric energy transmission device
Including magnet coupled resonant type wireless power transfer by DC source, high-frequency inverter circuit, type transformer coil structure resonance coupling part
Point, high-frequency rectification circuit, inverter circuit and load composition.
Described DC source is connected with high-frequency inverter circuit input, described type transformer coil structure resonance coupling unit input
It is connected with high-frequency inverter circuit outfan, described type transformer coil structure resonance coupling unit outfan and high-frequency rectification circuit input
Connect, described high-frequency rectification circuit outfan is connected with inverter circuit input.
Described high-frequency inverter circuit as shown in theory structure accompanying drawing 1, by choke induction, signal source, driving chip, switching tube
With shunt capacitance composition；Described choke induction is connected with the source electrode of DC power output end and switching tube respectively, described signal source
It is connected with driving chip input, described switching tube is connected with driving chip outfan, using UCC37325 as driving chip
Driving switch pipe MOSFET, as shown in theory structure accompanying drawing 4, using the channel B being applied to N-channel MOS FET, its channel B exports
End is connected with switch mosfet tube grid by flow-limiting voltage-stabilizing module, and described shunt capacitance is in parallel with the source drain of switching tube even
Connect so that switching tube meets Sofe Switch working condition, shunt capacitance respectively with two loop constructions in launching circuit and four lines
Driving circuit in coil structures is in parallel, thus unidirectional current is transformed into high-frequency alternating current, is to prepare next stage.
Described resonance coupling unit, as shown in theory structure accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, is coupled by two loop construction resonance
Part and four loop construction resonance coupling unit two parts composition；
Two loop construction resonance coupling units are made up of launching circuit and reception loop, and described launching circuit and reception loop are wireless
Connect；Described launching circuit includes transmitting coil and resonance capacitance group, and described transmitting coil and resonance capacitance group are connected in series, institute
State capacitance group to be connected by three capacitances in series, described be received back to route receiving coil and resonance capacitances in series be formed by connecting；Transmitting
The series resonant tank of loop resonance electric capacity and transmitting coil composition produces resonance potential and resonance current, receives loop and receives line
Enclose the series resonant tank becoming with resonance capacitance group to have and launching circuit identical resonant frequency, enabled by magnetic coupling resonance
Amount is transferred to receive loop from launching circuit, realizes being wirelessly transferred of electric energy；
Four loop construction resonance coupling units by driving resonant tank, launching circuit, receive loop and loaded resonant tank and form,
Described driving resonant tank and launching circuit wirelessly connect, and launching circuit and reception loop wirelessly connect, and receive loop and load
Resonant tank wirelessly connects；Described driving resonant tank includes driving coil and resonant capacitance, described driving coil and resonance electricity
Appearance is connected in series, and described launching circuit is formed by connecting by transmitting coil and resonance capacitances in series, and described reception loop includes receiving
Coil and resonant capacitance, described receiving coil and resonance capacitances in series connect, and described loaded resonant tank is harmonious by loading coil
Capacitances in series of shaking is formed by connecting, and drives resonant tank resonant capacitance and the series resonant tank of driving coil composition to produce resonance electricity
Pressure and resonance current, launching circuit resonant capacitance and transmitting coil composition series resonant tank, receive loop receiving coil and
The series resonant tank of resonant capacitance composition and the series resonance that becomes with resonance capacitance group of loaded resonant tank loading coil are returned
Road has and drives resonant tank identical resonant frequency, makes energy from driving resonant tank through transmitting by magnetic coupling resonance
Loop and reception loop are transferred to loaded resonant tank, realize being wirelessly transferred of electric energy, are that next step is prepared.
High-frequency rectification circuit as shown in theory structure accompanying drawing 2, by boost inductance, uncontrollable rectifier circuit and filter capacitor group
Become；Described boost inductance is connected with the input of uncontrollable rectifier circuit, and described filter capacitor is connected with uncontrollable rectifier circuit in parallel；
Described uncontrollable rectifier circuit is made up of rectifier bridge four Schottky diodes, through the uncontrollable rectifier being made up of Schottky diode
Circuit is transformed into unidirectional current by being wirelessly transferred the high-frequency alternating current obtaining, and is to prepare next stage.
Inverter circuit, as shown in theory structure accompanying drawing 2, is made up of boost inductance, full bridge inverter；Described boost inductance
It is connected with the input of full bridge inverter；Described full bridge inverter includes four MOSFET pipes and four diodes, each
MOSFET pipe is connected with a diode inverse parallel respectively, through the full-bridge inverting being made up of MOSFET pipe and anti-paralleled diode
Unidirectional current is transformed into industrial-frequency alternating current by circuit, connects any power frequency load further.
In above-mentioned specific embodiments, realize a kind of magnet coupled resonant type wireless electric energy transmission dress of difference loop construction
The specific works scheme put comprises the following steps.
1）When wireless power transmission distance is less than coil radius, coupled resonance part adopts two loop constructions.Specifically side
Method is：Switch S1Close a end, a＇End and a＇ ＇End connects, g1End and g1 ＇End connection, c end and c＇End connects, g2End and g2 ＇End connects.
2）When wireless power transmission distance is more than coil radius, coupled resonance part adopts four loop constructions.Specifically side
Method is：Switch S1Close b end, b＇End and b＇ ＇End connects, g1End and g1 ＇ ＇End connection, d end and d＇End connects, g2End and g2 ＇ ＇End is even
Connect.
Wireless electric energy transmission device efficiency of transmission is made to reach maximum by different transmission ranges using different loop constructions
Change.
Apparatus of the present invention circuit structure is simple, realizes easily, low cost, and stable and reliable operation has very high use valency
Value and economic benefits.
Above-described embodiment is only the preferred embodiments of the present invention, not limiting the scope of the invention, as long as adopting
The design principle of the present invention, and the change carrying out non-creative work on this basis and making, all should belong to the present invention's
Within protection domain.
Claims (7)
1. a kind of magnet coupled resonant type wireless power transfer of modified line coil structures, is connected with high frequency in turn including DC source
Inverter circuit, type transformer coil structure resonance coupling unit, high-frequency rectification circuit, inverter circuit and its load；It is characterized in that：Described
Type transformer coil structure resonance coupling unit is respectively arranged with the wireless connection of two loop constructions and four loop constructions, and two loop constructions are humorous
Shaking, to be provided with transmitting coil and receiving coil in coupling unit be resonance coil, when resonance coil is with identical hunting of frequency, leads to
Overcoupling transfers energy to receiving coil, realizes wireless power transmission；It is provided with driving in four loop construction resonance coupling units
Resonance coil, transmitting coil, receiving coil and load resonant coil are resonance coil, when resonance coil is with identical hunting of frequency
When, loading coil is transferred energy to by electromagnetic coupled, realizes wireless power transmission；And by adopting in different transmission ranges
Different loop constructions, make wireless electric energy transmission device efficiency of transmission reach maximization.
2. modified line coil structures according to claim 1 magnet coupled resonant type wireless power transfer it is characterised in that：
Described high-frequency inverter circuit is to be connected and composed by choke induction, signal source, driving chip, switching tube and shunt capacitance successively；Institute
Stating choke induction is to be connected with the input of DC power output end and switching tube respectively；Described signal source is inputted with driving chip
End connects；Described switching tube is connected with driving chip outfan；Described shunt capacitance is connected with paralleled power switches.
3. modified line coil structures according to claim 1 magnet coupled resonant type wireless power transfer it is characterised in that：
Described type transformer coil structure resonance coupling unit is integrated by two loop constructions and four loop construction two parts；Two loop construction resonance
Coupling unit is integrated by launching circuit and reception loop, and launching circuit and reception loop wirelessly connect；Described launching circuit bag
Include transmitting coil and resonance capacitance group；Described transmitting coil and capacitance group are connected in series；Described reception loop is by receiving coil
Connect with resonance capacitances in series and constitute；
Four loop construction resonance coupling units are by driving resonant tank, launching circuit, reception loop and loaded resonant tank even
Connect composition；Described driving resonant tank and launching circuit wirelessly connect, and launching circuit and reception loop wirelessly connect, and receive loop
Wirelessly connect with load circuit；Described driving resonant tank includes driving coil and resonant capacitance, described driving coil and resonance
Capacitances in series connects, and described launching circuit is connected and constituted by transmitting coil and resonance capacitances in series, and described reception loop includes
Receiving coil and resonant capacitance, described receiving coil and resonance capacitances in series connect, and described loaded resonant tank is by loading coil
Connect with resonance capacitances in series and constitute.
4. modified line coil structures according to claim 1 magnet coupled resonant type wireless power transfer it is characterised in that：
Described high-frequency rectification circuit is made up of boost inductance, uncontrollable rectifier circuit and filter capacitor；Described boost inductance and uncontrollable rectifier
The input of circuit connects；Described filter capacitor is connected with uncontrollable rectifier circuit in parallel；Described uncontrollable rectifier circuit is by four Xiao
Special based diode composition.
5. modified line coil structures according to claim 1 magnet coupled resonant type wireless power transfer it is characterised in that：
Described inverter circuit is to be connected and composed by boost inductance, full bridge inverter；Described boost inductance is defeated with full bridge inverter
Enter end to connect；Described full bridge inverter includes four MOSFET pipe and four diodes, each MOSFET pipe respectively with one
Diode inverse parallel connects.
6. modified line coil structures according to claim 1 magnet coupled resonant type wireless power transfer it is characterised in that：
Described load is pure resistor load, or impedance load.
7. modified line coil structures according to claim 1 magnet coupled resonant type wireless power transfer it is characterised in that：
Described wireless electric energy transmission device for two loop constructions, wireless power transmission distance for transmitting coil and receiving coil it
Between distance；For four loop constructions, wireless power transmission distance for drive between resonance coil and loading coil away from
From；When wireless power transmission distance is less than coil radius, using the magnet coupled resonant type wireless electric energy transmission of two loop constructions
Device；When wireless power transmission distance more than coil radius, less than effective propagation path when, using the magnetic coupling of four loop constructions
Resonance type wireless power transfer.
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| CN201611000664.3A CN106487105B (en) | 2016-11-14 | 2016-11-14 | A kind of magnet coupled resonant type wireless power transfer of modified line coil structures |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612160A (en) * | 2017-10-27 | 2018-01-19 | 西北工业大学 | A kind of magnetic coupling parallel resonance formula wireless electric energy transmission device |
| CN110061572A (en) * | 2019-05-10 | 2019-07-26 | 国网江苏省电力有限公司南京供电分公司 | A kind of magnet coupled resonant type wireless energy transmission system based on E power-like amplifier and four loop constructions |
| CN110460162A (en) * | 2019-07-24 | 2019-11-15 | 赖文饶 | A kind of short-distance wireless driving small-power power load |
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| CN102946156A (en) * | 2012-11-21 | 2013-02-27 | 中国科学院电工研究所 | Wireless power transmission device |
| CN203537076U (en) * | 2013-09-06 | 2014-04-09 | 中国矿业大学(北京) | Variable-coupling coefficient magnetic resonance wireless power transmission system |
| WO2014156014A1 (en) * | 2013-03-27 | 2014-10-02 | パナソニック株式会社 | Contactless charging device |
| CN204290505U (en) * | 2014-12-03 | 2015-04-22 | 华南理工大学 | A kind of wireless energy transfer structure of four coil electromagnetism resonant modes |
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2016
- 2016-11-14 CN CN201611000664.3A patent/CN106487105B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946156A (en) * | 2012-11-21 | 2013-02-27 | 中国科学院电工研究所 | Wireless power transmission device |
| WO2014156014A1 (en) * | 2013-03-27 | 2014-10-02 | パナソニック株式会社 | Contactless charging device |
| CN203537076U (en) * | 2013-09-06 | 2014-04-09 | 中国矿业大学(北京) | Variable-coupling coefficient magnetic resonance wireless power transmission system |
| CN204290505U (en) * | 2014-12-03 | 2015-04-22 | 华南理工大学 | A kind of wireless energy transfer structure of four coil electromagnetism resonant modes |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612160A (en) * | 2017-10-27 | 2018-01-19 | 西北工业大学 | A kind of magnetic coupling parallel resonance formula wireless electric energy transmission device |
| CN107612160B (en) * | 2017-10-27 | 2023-08-18 | 西北工业大学 | Magnetic coupling parallel resonance type wireless power transmission device |
| CN110061572A (en) * | 2019-05-10 | 2019-07-26 | 国网江苏省电力有限公司南京供电分公司 | A kind of magnet coupled resonant type wireless energy transmission system based on E power-like amplifier and four loop constructions |
| CN110460162A (en) * | 2019-07-24 | 2019-11-15 | 赖文饶 | A kind of short-distance wireless driving small-power power load |
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Granted publication date: 20190319 |