CN106487105B - 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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- CN106487105B CN106487105B CN201611000664.3A CN201611000664A CN106487105B CN 106487105 B CN106487105 B CN 106487105B CN 201611000664 A CN201611000664 A CN 201611000664A CN 106487105 B CN106487105 B CN 106487105B
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Abstract
The invention discloses a kind of magnet coupled resonant type wireless power transfers of modified line coil structures, including DC power supply to be connected with high-frequency inverter circuit, type transformer coil structure resonance coupling unit, high-frequency rectification circuit, inverter circuit and its load in turn；Wherein the type transformer coil structure resonance coupling unit is respectively arranged with the wireless connection of two loop constructions and four loop constructions, it is equipped with transmitting coil in two loop construction resonance coupling units and receiving coil 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 resonance coil that driving resonance coil, transmitting coil, receiving coil and load resonant coil are equipped in four loop construction resonance coupling units, when resonance coil is with identical hunting of frequency, loading coil is transferred energy to by electromagnetic coupling, realizes wireless power transmission；And by using different loop constructions in different transmission ranges, wireless electric energy transmission device efficiency of transmission is made to reach maximization.
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 technique
With the development of wireless power transmission technology, more and more fields are needed using wireless power transmission technical transmission
Electric energy.There are mainly three types of current wireless power transmission technologies, 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 tool
There is longer effective propagation path, and compared with microwave radiation mode, there is higher efficiency of transmission.Although magnetic coupling resonance side
More than formula has the advantages that, but its efficiency of transmission can change with the variation of distance, can not remain at very high level.
Theory analysis and it is demonstrated experimentally that the wireless power transmission based on magnet coupled resonant type wireless electric energy transmission technology fills
It sets, according to the difference of loop construction, efficiency of transmission is also different with the variation tendency of transmission range.
The wireless electric energy transmission device of two loop constructions, efficiency of transmission reduce with the increase of transmission range；Work as transmission
When distance is greater than coil radius, efficiency of transmission is reduced rapidly.
The wireless electric energy transmission device of four loop constructions, efficiency of transmission reach when transmission range is equal to coil radius
Maximum value.When transmission range is less than coil radius, efficiency of transmission increases with the increase of transmission range；When transmission range is greater than
Coil radius is less than effective propagation path, the calculation formula of effective propagation path:When, transmission effect
Rate reduces with the increase of transmission range.
Two loop constructions employed in " research of the radio energy transmission system based on magnetic coupling resonance ", it is existing to ask
Topic is when wireless transmission distance is less than coil radius, and efficiency of transmission is relatively high, and wireless transmission distance is greater than coil radius, is less than
When coil diameter, efficiency of transmission is lower, and wireless transmission distance is greater than coil diameter, then efficiency of transmission is substantially zeroed." double relaying nothings
Line electric energy transmission system modeling with efficiency of transmission analyze " in use four loop constructions, the problem is that wireless transmission away from
When from being less than coil radius, efficiency of transmission is lower, and when wireless transmission distance is greater than coil, efficiency of transmission is significantly raised.
Summary of the invention
Above-mentioned for the magnet coupled resonant type wireless electric energy transmission technology of existing two loop construction and four loop constructions lacks
It falls into, the present invention provides a kind of magnet coupled resonant type wireless power transfer of modified line coil structures.
To achieve 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, including DC power supply are connected with height in turn
Frequency inverter circuit, type transformer coil structure resonance coupling unit, high-frequency rectification circuit, inverter circuit and its load；It is characterized by: 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
It is equipped with transmitting coil in resonance coupling unit and receiving coil 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 equipped with and drives 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 coupling, realizes wireless power transmission；And by being adopted in different transmission ranges
With different loop constructions, wireless electric energy transmission device efficiency of transmission is made to reach maximization.
The high-frequency inverter circuit is successively to be connected by choke induction, signal source, driving chip, switching tube with shunt capacitance
It constitutes；The choke induction is to connect respectively with the input terminal of DC power output end and switching tube；The signal source and driving
The connection of chip input terminal；The switching tube is connect with driving chip output end；The shunt capacitance is connect with paralleled power switches.
The 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 circuit, and launching circuit and reception circuit are wirelessly connected；The hair
Being emitted back towards road includes transmitting coil and resonance capacitance group；The transmitting coil and capacitance group are connected in series；The reception circuit be by
Receiving coil and resonant capacitance are connected in series and constitute；
Four loop construction resonance coupling units are by driving resonant tank, launching circuit, receive circuit and load resonant go back to
Road connects and composes；The driving resonant tank and launching circuit are wirelessly connected, and launching circuit and reception circuit are wirelessly connected, and are received
Circuit and load circuit are wirelessly connected；The driving resonant tank includes driving coil and resonant capacitance, the driving coil and
Resonant capacitance is connected in series, and the launching circuit is connected in series by transmitting coil and resonant capacitance and is constituted, the reception circuit
Including receiving coil and resonant capacitance, the receiving coil and resonant capacitance are connected in series, and the loaded resonant tank is by loading
Coil and resonant capacitance are connected in series and constitute.
The high-frequency rectification circuit is made of boost inductance, uncontrollable rectifier circuit and filter capacitor；The boost inductance with
The input terminal of uncontrollable rectifier circuit connects；The filter capacitor is connect with uncontrollable rectifier circuit in parallel；The uncontrollable rectifier circuit
It is made of four Schottky diodes.
The inverter circuit is connected and composed by boost inductance, full bridge inverter；The boost inductance and full-bridge inverting
The input terminal of circuit connects；The full bridge inverter includes four MOSFET pipes and four diodes, each MOSFET pipe point
It is not connect with a diode inverse parallel.
The load is pure resistor load or impedance load.
For two loop constructions, wireless power transmission distance is transmitting coil and connects the wireless electric energy transmission device
The distance between take-up circle；For four loop constructions, wireless power transmission distance is 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
It can transmitting device.When wireless power transmission distance is greater than coil radius, is less than effective propagation path, 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 modified line coil structures provided by the present invention is above-mentioned, sets respectively
It is equipped with the wireless connection of two loop construction resonance coupling units and four loop construction resonance coupling units, two loop construction resonance couplings
It closes in part and passes through coupling when resonance coil is with identical hunting of frequency for resonance coil equipped with transmitting coil and receiving coil
Conjunction transfers energy to receiving coil, realizes wireless power transmission；Driving resonance is equipped 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 coupling, realizes wireless power transmission；When wireless power transmission distance is less than coil
When radius, using the magnet coupled resonant type wireless power transfer of two loop constructions；When wireless power transmission distance is greater than line
When enclosing radius, being less than effective propagation path, using the magnet coupled resonant type wireless power transfer of four loop constructions, by
Different transmission ranges use different loop constructions, and wireless electric energy transmission device efficiency of transmission is made to reach maximization.
Apparatus of the present invention circuit structure is simple, realizes and is easy, at low cost, stable and reliable operation, uses valence with very high
Value and economic benefits.
Detailed description of the invention
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 two coil principle structural circuit figures of the invention.
Fig. 4 is four coil principle structural circuit figures of the invention.
Fig. 5 is high-frequency inverter circuit driving of the present invention and on-off principle structural circuit figure.
Specific embodiment
Specific embodiments of the present invention are further illustrated below in conjunction with attached drawing.
Implement a kind of magnet coupled resonant type wireless power transfer of modified line coil structures, the wireless electric energy transmission device
Including magnet coupled resonant type wireless power transfer by DC power supply, high-frequency inverter circuit, type transformer coil structure resonance coupling part
Point, high-frequency rectification circuit, inverter circuit and load composition.
The DC power supply is connect with high-frequency inverter circuit input terminal, the type transformer coil structure resonance coupling unit input terminal
It is connect with high-frequency inverter circuit output end, the type transformer coil structure resonance coupling unit output end and high-frequency rectification circuit input terminal
Connection, the high-frequency rectification circuit output end are connect with inverter circuit input terminal.
The high-frequency inverter circuit is as shown in theory structure attached drawing 1, by choke induction, signal source, driving chip, switching tube
It is formed with shunt capacitance；The choke induction is connect with the source electrode of DC power output end and switching tube respectively, the signal source
It is connect with driving chip input terminal, the switching tube is connect with driving chip output end, using UCC37325 as driving chip
Driving switch pipe MOSFET, as shown in theory structure attached drawing 4, using the channel B for being suitable for N-channel MOS FET, channel B output
End is connect by flow-limiting voltage-stabilizing module with switch mosfet tube grid, and the shunt capacitance is in parallel with the source drain of switching tube to be connected
Connect so that switching tube meets Sofe Switch operating condition, shunt capacitance respectively with the launching circuit and four lines in two loop constructions
Driving circuit in coil structures is in parallel, so that direct current is transformed into high-frequency alternating current, prepares for next stage.
The resonance coupling unit is coupled as shown in theory structure attached drawing 2, attached drawing 3 and attached drawing 4 by two loop construction resonance
Part and four loop construction resonance coupling unit two parts composition；
Two loop construction resonance coupling units are made of launching circuit and reception circuit, the launching circuit and reception circuit
It is wirelessly connected；The launching circuit includes transmitting coil and resonance capacitance group, and the transmitting coil and the series connection of resonance capacitance group connect
Connect, the capacitance group is connected in series by three capacitors, it is described be received back routing receiving coil and resonant capacitance be connected in series；
The series resonant tank of launching circuit resonant capacitance and transmitting coil composition generates resonance potential and resonance current, receives circuit and connects
Take-up circle and resonance capacitance group at series resonant tank there is resonance frequency identical with launching circuit, pass through magnetic coupling resonance
It is transferred to energy from launching circuit and receives circuit, realize the wireless transmission of electric energy；
Four loop construction resonance coupling units are by driving resonant tank, launching circuit, reception circuit and loaded resonant tank
Composition, the driving resonant tank and launching circuit are wirelessly connected, and launching circuit and are received circuit and are wirelessly connected, receive circuit with
Loaded resonant tank is wirelessly connected；The driving resonant tank includes driving coil and resonant capacitance, and the driving coil is harmonious
The capacitor that shakes is connected in series, and the launching circuit is connected in series by transmitting coil and resonant capacitance, and the reception circuit includes
Receiving coil and resonant capacitance, the receiving coil and resonant capacitance are connected in series, and the loaded resonant tank is by loading coil
It is connected in series with resonant capacitance, drives the series resonant tank of resonant tank resonant capacitance and driving coil composition to generate humorous
Shake voltage and resonance current, and the series resonant tank of launching circuit resonant capacitance and transmitting coil composition receives circuit reception line
Circle and resonance capacitance group at series resonant tank and loaded resonant tank loading coil and resonance capacitance group at series connection it is humorous
Vibration circuit has and drives the identical resonance frequency of resonant tank, passes through energy from driving resonant tank by magnetic coupling resonance
Launching circuit and reception circuit are transferred to loaded resonant tank, realize the wireless transmission of electric energy, to prepare in next step.
High-frequency rectification circuit is as shown in theory structure attached drawing 2, by boost inductance, uncontrollable rectifier circuit and filter capacitor group
At；The boost inductance is connect with the input terminal of uncontrollable rectifier circuit, and the filter capacitor is connect with uncontrollable rectifier circuit in parallel；
The uncontrollable rectifier circuit constitutes rectifier bridge by four Schottky diodes, by the uncontrollable rectifier being made of Schottky diode
The high-frequency alternating current that wireless transmission obtains is transformed into direct current by circuit, is prepared for next stage.
Inverter circuit is made of as shown in theory structure attached drawing 2 boost inductance, full bridge inverter；The boost inductance
It is connect with the input terminal of full bridge inverter；The full bridge inverter includes four MOSFET pipes and four diodes, each
MOSFET pipe is connect with a diode inverse parallel respectively, by the full-bridge inverting being made of MOSFET pipe and anti-paralleled diode
Direct current is transformed into industrial-frequency alternating current by circuit, further connects any power frequency load.
In above-mentioned specific embodiment, a kind of magnet coupled resonant type wireless electric energy transmission dress of different loop constructions is realized
The specific works scheme set includes the following steps.
1) when wireless power transmission distance is less than coil radius, coupled resonance part uses two loop constructions.Specific side
Method are as follows: switch S1Close the end a, a'End and a' 'End connection, g1End and g1 'End connection, the end c and c'End connection, g2End and g2 'End connection.
2) when wireless power transmission distance is greater than coil radius, coupled resonance part uses four loop constructions.Specific side
Method are as follows: switch S1Close the end b, b'End and b' 'End connection, g1End and g1 ' 'End connection, the end d and d'End connection, g2End and g2 ' 'End connects
It connects.
By using different loop constructions in different transmission ranges, wireless electric energy transmission device efficiency of transmission is made to reach maximum
Change.
Apparatus of the present invention circuit structure is simple, realizes and is easy, at low cost, stable and reliable operation, uses valence with very high
Value and economic benefits.
Above-described embodiment is merely a preferred embodiment of the present invention, and it is not intended to limit the protection scope of the present invention, as long as using
Design principle of the invention, and the non-creative variation worked and made is carried out on this basis, it should belong to of the invention
Within protection scope.
Claims (6)
1. a kind of magnet coupled resonant type wireless power transfer of modified line coil structures, including DC power supply are connected with high frequency in turn
Inverter circuit, type transformer coil structure resonance coupling unit, high-frequency rectification circuit, inverter circuit and its load；It is characterized by: 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
It is resonance coil that transmitting coil and receiving coil are equipped in vibration coupling unit, when resonance coil is with identical hunting of frequency, is led to
Overcoupling transfers energy to receiving coil, realizes wireless power transmission；Driving is equipped 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 coupling, realizes wireless power transmission；And by being used in different transmission ranges
Different loop constructions make wireless electric energy transmission device efficiency of transmission reach maximization；
For the wireless electric energy transmission device for two loop constructions, wireless power transmission distance is transmitting coil and reception line
The distance between circle；For four loop constructions, wireless power transmission distance is between driving resonance coil and loading coil
Distance；When wireless power transmission distance is less than coil radius, using the magnet coupled resonant type wireless electric energy of two loop constructions
Transmitting device；When wireless power transmission distance is greater than coil radius, is less than effective propagation path, using the magnetic of four loop constructions
Coupled resonance formula wireless electric energy transmission device.
2. the magnet coupled resonant type wireless power transfer of modified line coil structures according to claim 1, it is characterised in that:
The high-frequency inverter circuit is successively to be connected and composed by choke induction, signal source, driving chip, switching tube and shunt capacitance；Institute
Stating choke induction is to connect respectively with the input terminal of DC power output end and switching tube；The signal source and driving chip input
End connection；The switching tube is connect with driving chip output end；The shunt capacitance is connect with paralleled power switches.
3. the magnet coupled resonant type wireless power transfer of modified line coil structures according to claim 1, it is characterised in that:
The 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 circuit, and launching circuit and reception circuit are wirelessly connected；The launching circuit packet
Include transmitting coil and resonance capacitance group；The transmitting coil and capacitance group are connected in series；The reception circuit is by receiving coil
It is connected in series and constitutes with resonant capacitance；
Four loop construction resonance coupling units are by driving resonant tank, launching circuit, receive circuit and loaded resonant tank company
Connect composition；The driving resonant tank and launching circuit are wirelessly connected, and launching circuit and reception circuit are wirelessly connected, and receive circuit
It is wirelessly connected with load circuit；The driving resonant tank includes driving coil and resonant capacitance, the driving coil and resonance
Capacitor is connected in series, and the launching circuit is connected in series by transmitting coil and resonant capacitance and is constituted, and the reception circuit includes
Receiving coil and resonant capacitance, the receiving coil and resonant capacitance are connected in series, and the loaded resonant tank is by loading coil
It is connected in series and constitutes with resonant capacitance.
4. the magnet coupled resonant type wireless power transfer of modified line coil structures according to claim 1, it is characterised in that:
The high-frequency rectification circuit is made of boost inductance, uncontrollable rectifier circuit and filter capacitor；The boost inductance and uncontrollable rectifier
The input terminal of circuit connects；The filter capacitor is connect with uncontrollable rectifier circuit in parallel；The uncontrollable rectifier circuit is by four Xiao
Special based diode composition.
5. the magnet coupled resonant type wireless power transfer of modified line coil structures according to claim 1, it is characterised in that:
The inverter circuit is connected and composed by boost inductance, full bridge inverter；The boost inductance and full bridge inverter it is defeated
Enter end connection；The full bridge inverter includes four MOSFET pipe and four diodes, each MOSFET pipe respectively with one
Diode inverse parallel connection.
6. the magnet coupled resonant type wireless power transfer of modified line coil structures according to claim 1, it is characterised in that:
The load is pure resistor load or impedance load.
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| 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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| 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 active Active
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 |
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