CN103746466A - Magnetic coupling resonance wireless power transmission device suitable for multi-load transmission - Google Patents
Magnetic coupling resonance wireless power transmission device suitable for multi-load transmission Download PDFInfo
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- CN103746466A CN103746466A CN201410026742.1A CN201410026742A CN103746466A CN 103746466 A CN103746466 A CN 103746466A CN 201410026742 A CN201410026742 A CN 201410026742A CN 103746466 A CN103746466 A CN 103746466A
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Abstract
The invention relates to a magnetic coupling resonance wireless power transmission device, comprising an emission coil, a receiving coil and multiple load coils; the two ends of the emission coil are respectively connected with a first capacitor to form a closed loop, and the emission coil is resonated by the first capacitor and is used for emitting electric energy; the receiving coil and the emission coil are arranged at intervals, two ends of the receiving coil are respectively connected with a second capacitor to form a closed loop, and the receiving coil is resonated by the second capacitor and is used for receiving the electric energy; the magnetic coupling resonance wireless power transmission device is characterized in that the multiple load coils are arranged by corresponding to the same receiving coil, and the receiving coil transmits the received electric energy to the multiple load coils at the same time by electromagnetic induction. The magnetic coupling resonance wireless power transmission device transmits power to the multiple load coils at the same time by one single receiving coil, and is simple in structure.
Description
Technical field
The present invention relates to wireless electric energy transmission device, relate in particular to a kind of magnet coupled resonant type wireless power transfer.
Background technology
Since human society has entered Electrification Age, the transmission of electric energy is mainly by the point-to-point direct contact transmission of plain conductor.But because wire exists friction, the problem such as aging, in delivery of electrical energy process, be easy to produce spark, and then have influence on life-span and the Electrical Safety of power consumption equipment.Meanwhile, in some particular application, as mine and water medium, wire directly contacts transmission and easily causes danger.Also there is inconvenience in the long-term power supply of the Medical Devices that implant in addition.Wireless power transmission (wireless power transfer, WPT) can overcome the above problems.
Adopt electromagnetic field can realize wireless power transmission as transmission medium.According to the difference of principle, wireless power transmission roughly can be divided three classes: the first is induction type, and this mode through-put power is large, but the close together of transmission; The second is radiant type, and this mode directionality is good, long transmission distance, but large on periphery electromagnetic environment impact; The third is resonant mode, and this is a kind of emerging wireless power transmission mode, claims again magnet coupled resonant type wireless electric energy transmission technology.Which can, with larger power, be transmitted larger distance under higher efficiency.Than induction type, its transmission range is far away, and more insensitive for direction directive property; Than radiant type, its impact on periphery electromagnetic environment is less.
Magnet coupled resonant type wireless electric energy transmission technology is rapid in development in recent years.In practical application, a set of emitter need to be given multiple load supplyings conventionally.Existing magnet coupled resonant type wireless power transfer adopts multiple receiving coils to realize multiple load supplyings conventionally, causes complex structure, volume heaviness.
Summary of the invention
Therefore, necessaryly provide magnet coupled resonant type wireless power transfer a kind of not only simple in structure but also that can simultaneously power to multiple loads.
A kind of magnet coupled resonant type wireless power transfer, it comprises: a transmitting coil, described transmitting coil two ends connect respectively one first electric capacity and form closed-loop path, and by this first capacitor resonance, described transmitting coil is used for launching electric energy; One with the spaced receiving coil of described transmitting coil, described receiving coil two ends connect respectively one second electric capacity and form closed-loop path, and by this second capacitor resonance, described receiving coil is used for receiving electric energy; And multiple loading coils, it is characterized in that, the corresponding same receiving coil setting of the plurality of loading coil, and this receiving coil passes to the plurality of loading coil by electromagnetic induction by the electric energy of reception simultaneously.
A kind of magnet coupled resonant type wireless power transfer, it comprises: a transmitting coil; One receiving coil; And multiple loading coils, it is characterized in that, the corresponding same receiving coil setting of the plurality of loading coil, and this receiving coil passes to the plurality of loading coil by electromagnetic induction by electric energy simultaneously.
Compared with prior art, magnet coupled resonant type wireless power transfer provided by the invention is given multiple loading coil transmissions of electricity by single receiving coil simultaneously, simple in structure.
Accompanying drawing explanation
Fig. 1 implements the structural representation of the magnet coupled resonant type wireless power transfer providing for the present invention first.
Fig. 2 implements the structural representation of the magnet coupled resonant type wireless power transfer providing for the present invention second.
Fig. 3 implements the structural representation of the magnet coupled resonant type wireless power transfer providing for the present invention the 3rd.
Fig. 4 implements the structural representation of the magnet coupled resonant type wireless power transfer providing for the present invention the 4th.
Fig. 5 implements the structural representation of the magnet coupled resonant type wireless power transfer providing for the present invention the 5th.
Main element symbol description
| Wireless electric |
10, 20, 30, 40, 50 |
| |
100 |
| |
110 |
| Transmitting |
120 |
| The first |
122 |
| Receiving |
130 |
| The second |
132 |
| Bus circle | 134 |
| Subcoil | 136 |
| Loading |
140 |
| |
142 |
Following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Below with reference to accompanying drawing, describe the magnet coupled resonant type wireless power transfer that the embodiment of the present invention provides in detail.
Refer to Fig. 1, first embodiment of the invention provides a kind of magnet coupled resonant type wireless power transfer 10.Described magnet coupled resonant type wireless power transfer 10 comprises a transmitting coil 120, a receiving coil 130 and multiple loading coil 140.
Described transmitting coil 120 arranges with described receiving coil 130 intervals.Described transmitting coil 120 is used from magnet coupled resonant type wireless delivery of electrical energy with described receiving coil 130 1.Described transmitting coil 120 is for launching electric energy, described receiving coil 130 for receive electric energy and by electromagnetic induction by electrical energy transfer to loading coil 140.And, receiving coil 130 can make simultaneously the plurality of loading coil 140 because of electromagnetic induction charged.Described transmitting coil 120 can be identical with the size of described receiving coil 130, also can be different.Preferably, described transmitting coil 120 is identical with the size of described receiving coil 130.Described transmitting coil 120 is not limit with the coil winding mode of described receiving coil 130, can be wound around for single or multiple lift.Described transmitting coil 120 is not limit with the coil turn of described receiving coil 130, can select as required.Preferably, described transmitting coil 120 is greater than 10 circles with the coil turn of described receiving coil 130.Described transmitting coil 120 two ends connect respectively the first electric capacity 122 and form closed-loop path, and by these the first electric capacity 122 resonance.Described receiving coil 130 two ends connect respectively the second electric capacity 132 and form closed-loop path, and by these the second electric capacity 132 resonance.Described the first electric capacity 122 and described the second electric capacity 132 can be stray capacitance or lumped capacitance.Described the first electric capacity 122 is identical with the resonance frequency of described receiving coil 130 with described the second electric capacity 132 with the resonance frequency of described transmitting coil 120.Described transmitting coil 120 is hollow structure with described receiving coil 130 inside, and this is conducive to reduce the dielectric loss that magnet coupled resonant type wireless power transfer 10 produces in medium around, the efficiency of transmission of raising system.
The corresponding same receiving coil 130 of described multiple loading coil 140 arranges.The diameter of described loading coil 140 is less than the diameter of described receiving coil 130.The coil turn of described loading coil 140 is less, is generally 1 to 3 circle.Described loading coil 140 does not produce resonance.Described multiple loading coil 140 arranges near described receiving coil 130, and the distance between described loading coil 140 and described receiving coil 130 is less than the distance between described receiving coil 130 and described transmitting coil 120.Described loading coil 140 can be parallel to described receiving coil 130 and arrange, also can and described receiving coil 130 between the setting that has angle.The setting that has angle between described loading coil 140 and described receiving coil 130, preferably, this angle is more than or equal to 0 degree and is less than or equal to 60 degree.Described angle refers to the angle between described receiving coil 130 and described loading coil 140 cross sections or central shaft.Described loading coil 140 can be parallel to described receiving coil 130 cross section or the central axes that refer to described receiving coil 130 and described loading coil 140 are set.When described multiple loading coils 140 are single turn, described multiple loading coils 140 can coplanarly arrange.Coupling coefficient between described receiving coil 130 and described loading coil 140 can be by regulating distance, the skew between described receiving coil 130 and described loading coil 140 or realizing by the difformity that regulates described receiving coil 130 and described loading coil 140.Thereby can regulate efficiency of transmission and the power output of this magnet coupled resonant type wireless power transfer 10.
In the present embodiment, described transmitting coil 120 is with described receiving coil 130 the density-winding hollow solenoid coil that adopts the copper conductor that is surrounded by insulating barrier, and described transmitting coil 120 is 20 circles with described receiving coil 130.Described loading coil 140 is also for being surrounded by the copper conductor coils of insulating barrier.Described loading coil 140 quantity are three, and wherein two loading coils 140 are two circles, and another one loading coil 140 is single turn.Described three loading coils 140 are parallel to described receiving coil 130 and arrange.
When described magnet coupled resonant type wireless power transfer 10 is worked, described transmitting coil 120 two ends are connected with the mains respectively to 100, and make transmitting coil 120 with described the first electric capacity 122 parallel connections or connect.The wire two ends of each loading coil 140 connect at least one load 142.Described transmitting coil 120 is launched electric energy, and described receiving coil 130 receives electric energy and by electromagnetic induction, electric energy passed to multiple loading coils 140 simultaneously.Described loading coil 140 drives described load 142 to work, thereby realize, carries out wireless power transmission to multiple loads 142 simultaneously.
Refer to Fig. 2, second embodiment of the invention provides a kind of magnet coupled resonant type wireless power transfer 20.Described magnet coupled resonant type wireless power transfer 20 comprises a power coil 110, a transmitting coil 120, a receiving coil 130 and multiple loading coil 140.
Magnet coupled resonant type wireless power transfer 10 structures of the magnet coupled resonant type wireless power transfer 20 of second embodiment of the invention and the first embodiment are basic identical, and its difference is: this wireless electric energy transmission device 20 further comprises a power coil 110.
Described power coil 110 arranges near this transmitting coil 120, and is arranged at the side of this transmitting coil 120 away from receiving coil 130.Described power coil 110 arranges with described transmitting coil 120 intervals, and the distance between described power coil 110 and described transmitting coil 120 is less than the distance between described transmitting coil 120 and described receiving coil 130.The coil turn of described power coil 110 is less, is generally 1 to 3 circle.In the present embodiment, described power coil 110 is two circles.
When described magnet coupled resonant type wireless power transfer 20 is worked, described power coil 110 two ends are connected with the mains respectively to 100.The wire two ends of each loading coil 140 connect at least one load 142.Described power coil 110 with described transmitting coil 120 by electromagnetic induction by delivery of electrical energy to transmitting coil 120.Described transmitting coil 120 is launched electric energy, and described receiving coil 130 receives electric energy and by electromagnetic induction, electric energy passed to multiple loading coils 140 simultaneously.Described loading coil 140 drives described load 142 to work, thereby realize, carries out wireless power transmission to multiple loads 142 simultaneously.Being appreciated that further can also be by the mutual inductance between adjustment power coil 110 and transmitting coil 120 with regulation output power efficiency.
Refer to Fig. 3, third embodiment of the invention provides a kind of magnet coupled resonant type wireless power transfer 30.Described magnet coupled resonant type wireless power transfer 30 comprises a transmitting coil 120, a receiving coil 130 and multiple loading coil 140.
Magnet coupled resonant type wireless power transfer 10 structures of the magnet coupled resonant type wireless power transfer 30 of third embodiment of the invention and the first embodiment are basic identical, its difference is: the plurality of loading coil 140 is arranged at described receiving coil 130 inside, and the two ends of described loading coil 140 extend to described receiving coil 130 outsides, to connect load 142.
In the present embodiment, described receiving coil 130 adopts the conductive line fabrication that is surrounded by insulating barrier, or described loading coil 140 adopts the conductive line fabrication that is surrounded by insulating barrier.Preferably, described receiving coil 130 and described loading coil 140 all adopt the conductive line fabrication that is surrounded by insulating barrier.The coil distance of described receiving coil 130 is greater than the diameter of the wire of described loading coil 140.Be appreciated that therefore the electromagnetic induction between this receiving coil 130 and loading coil 140 is stronger, has reduced electric energy loss, has improved through-put power because loading coil 140 is arranged at described receiving coil 130 inside.
Refer to Fig. 4, fourth embodiment of the invention provides a kind of magnet coupled resonant type wireless power transfer 40.Described magnet coupled resonant type wireless power transfer 40 comprises a transmitting coil 120, a receiving coil 130 and multiple loading coil 140.
Magnet coupled resonant type wireless power transfer 10 structures of the magnet coupled resonant type wireless power transfer 40 of fourth embodiment of the invention and the first embodiment are basic identical, and its difference is: the equal Concentric plate of coil of this transmitting coil 120 and receiving coil 130 is in same plane.Be appreciated that due to the equal Concentric plate of coil of this transmitting coil 120, receiving coil 130 and loading coil 140 around, the thickness of each coil is very little, is equivalent to the diameter of winding wire.Therefore, this wireless electric energy transmission device 40 is tried out the electronic equipment less in thickness.
Refer to Fig. 5, fifth embodiment of the invention provides a kind of magnet coupled resonant type wireless power transfer 50.Described magnet coupled resonant type wireless power transfer 50 comprises a transmitting coil 120, a receiving coil 130 and multiple loading coil 140.
Magnet coupled resonant type wireless power transfer 10 structures of the magnet coupled resonant type wireless power transfer 50 of fifth embodiment of the invention and the first embodiment are basic identical, and its difference is: every circle coil of this receiving coil 130 includes a bus circle 134 and multiple subcoil 136.
The bus circle 134 of described every circle coil and the coplanar setting of multiple subcoil 136.The number of the subcoil 136 of described every circle coil is not limit, and can select as required.Preferably, described multiple subcoil 136 uniformly-spaced arranges.In the present embodiment, every circle coil includes a bus circle 134 and three subcoils 136.Described bus circle 134 is identical with the winding direction of multiple subcoils 136, thereby makes described bus circle 134 identical with the sense of current in multiple subcoils 136, is all clockwise or counterclockwise.Described multiple loading coil 140 can with subcoil 136 corresponding setting one by one.Or only by corresponding with subcoil 136 loading coil at edge 140 setting, and middle loading coil 140 setting corresponding to bus circle 134.Be appreciated that, the loading coil 140 that is positioned at edge is lower with the degree of coupling of bus circle 134, when this wireless electric energy transmission device 50 is worked, due to the loading coil 140 at edge respectively with the corresponding setting of a subcoil 136, by the subcoil corresponding with this 136 electromagnetic induction, the degree of coupling of the loading coil 140 at very high edge.
The magnet coupled resonant type wireless power transfer that the embodiment of the present invention provides has the following advantages: by single receiving coil 130, transmit electricity to multiple loading coils 140 simultaneously, and simple in structure, and improved efficiency of transmission.
In addition, those skilled in the art also can do other and change in spirit of the present invention, and certainly, the variation that these do according to spirit of the present invention, within all should being included in the present invention's scope required for protection.
Claims (10)
1. a magnet coupled resonant type wireless power transfer, it comprises:
One transmitting coil, described transmitting coil two ends connect respectively one first electric capacity and form closed-loop path, and by this first capacitor resonance, described transmitting coil is used for launching electric energy;
One with the spaced receiving coil of described transmitting coil, described receiving coil two ends connect respectively one second electric capacity and form closed-loop path, and by this second capacitor resonance, described receiving coil is used for receiving electric energy; And
Multiple loading coils, is characterized in that, the corresponding same receiving coil setting of the plurality of loading coil, and this receiving coil passes to the plurality of loading coil by electromagnetic induction by the electric energy of reception simultaneously.
2. magnet coupled resonant type wireless power transfer as claimed in claim 1, is characterized in that, the cross section of described receiving coil and described loading coil or central axes.
3. magnet coupled resonant type wireless power transfer as claimed in claim 1, is characterized in that, the setting that has angle between described multiple loading coils and described receiving coil, and this angle is more than or equal to 0 degree and is less than or equal to 60 degree.
4. magnet coupled resonant type wireless power transfer as claimed in claim 1, is characterized in that, when described multiple loading coils are single turn, and the coplanar setting of described multiple loading coil.
5. magnet coupled resonant type wireless power transfer as claimed in claim 1, is characterized in that, described multiple loading coils are arranged at this receiving coil inside, and the two ends of described loading coil extend to described receiving coil outside.
6. magnet coupled resonant type wireless power transfer as claimed in claim 1, is characterized in that, the equal Concentric plate of coil of described transmitting coil and receiving coil is in same plane.
7. magnet coupled resonant type wireless power transfer as claimed in claim 1, is characterized in that, every circle coil of described receiving coil includes a bus circle and multiple subcoil, and the winding direction of described bus circle and multiple subcoils is identical.
8. magnet coupled resonant type wireless power transfer as claimed in claim 1, is characterized in that, the loading coil at edge and the corresponding setting of a subcoil, and middle loading coil setting corresponding to bus circle.
9. magnet coupled resonant type wireless power transfer as claimed in claim 1, is characterized in that, further comprises a power coil, and this power coil is arranged at the side of this transmitting coil away from receiving coil.
10. a magnet coupled resonant type wireless power transfer, it comprises:
One transmitting coil;
One receiving coil; And
Multiple loading coils,
It is characterized in that, the corresponding same receiving coil setting of the plurality of loading coil, and this receiving coil passes to the plurality of loading coil by electromagnetic induction by electric energy simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410026742.1A CN103746466B (en) | 2014-01-21 | 2014-01-21 | A kind of magnet coupled resonant type wireless power transfer being applicable to multi-load transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410026742.1A CN103746466B (en) | 2014-01-21 | 2014-01-21 | A kind of magnet coupled resonant type wireless power transfer being applicable to multi-load transmission |
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| CN103746466B CN103746466B (en) | 2015-10-21 |
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Cited By (6)
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| CN104104159A (en) * | 2014-06-30 | 2014-10-15 | 南昌大学 | Magnetic resonance coupling multi-load wireless charging platform with uniform magnetic field characteristic |
| CN106299667A (en) * | 2016-09-26 | 2017-01-04 | 上海德门电子科技有限公司 | The NFC antenna device of adjustable self-resonant frequency and electronic equipment and method |
| CN107843519A (en) * | 2017-10-17 | 2018-03-27 | 北京润东仪器厂 | A kind of integrated form vapour pressure analyzer |
| CN108072454A (en) * | 2016-11-17 | 2018-05-25 | 中国电力科学研究院 | The anti-interference temp measuring system of solid loop-net cabinet based on magnetic coupling resonance power supply mode |
| CN110809532A (en) * | 2017-06-28 | 2020-02-18 | 穆希奇·萨利赫 | Wireless transmission system for electric power of electric vehicle |
| CN112640254A (en) * | 2019-03-14 | 2021-04-09 | 欧姆龙株式会社 | Wireless power transmission device and wireless power transmission system |
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| CN108519119A (en) * | 2018-03-26 | 2018-09-11 | 王智华 | Detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107843519A (en) * | 2017-10-17 | 2018-03-27 | 北京润东仪器厂 | A kind of integrated form vapour pressure analyzer |
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| CN112640254B (en) * | 2019-03-14 | 2023-08-29 | 欧姆龙株式会社 | Wireless power transmission device and wireless power transmission system |
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