CN103280898A - Magnetic coupling resonant mode wireless electric energy transmission device - Google Patents
Magnetic coupling resonant mode wireless electric energy transmission device Download PDFInfo
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- CN103280898A CN103280898A CN2013101996443A CN201310199644A CN103280898A CN 103280898 A CN103280898 A CN 103280898A CN 2013101996443 A CN2013101996443 A CN 2013101996443A CN 201310199644 A CN201310199644 A CN 201310199644A CN 103280898 A CN103280898 A CN 103280898A
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Abstract
The invention relates to a magnetic coupling resonant mode wireless electric energy transmission device, comprising a guide rail and two coil base frames which are arranged on the guide rail, wherein the two coil base frames can freely slide on the guide rail; each coil base frame comprises a support and two coil units which are arranged on the base frames in intervals; and each coil unit comprises a transmission coil and a matching coil.
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 had entered Electrification Age, the transmission of electric energy was mainly transmitted by the point-to-point direct contact of plain conductor.But owing to problems such as the lead existence rub, wears out, be easy to produce spark in the electric energy transmission course, and then have influence on life-span and the Electrical Safety of power consumption equipment.Simultaneously, medium as mine and water in some particular application, lead directly contacts transmission and causes danger easily.Also there is inconvenience in the long-term power supply of the Medical Devices that implant in addition.(wireless power transfer WPT) can overcome the above problems wireless power transmission.
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: first kind is induction type, and this mode through-put power is big, but the close together of transmission; Second kind is radiant type, and this mode directionality is good, long transmission distance, but big to the periphery electromagnetic environment influence; The third is resonant mode, and this is a kind of emerging wireless power transmission mode, claims the magnet coupled resonant type wireless electric energy transmission technology again.This mode can be transmitted larger distance with bigger power under higher efficient.Than induction type, its transmission range is far away, and more insensitive for direction directive property; Than radiant type, its influence to periphery electromagnetic environment is less.
The magnet coupled resonant type wireless electric energy transmission technology is rapid in development in recent years.But because the proposition time is short, research is abundant not enough, application is extensive not enough, still has many problems at present.In theory, systematic analysis and method for designing are not intactly proposed, and resonance frequency, parameters such as inductance value and the capacitance not theory of a sleeve forming are selected design; At present two kinds of basic transmission structures, i.e. two loop constructions and four loop constructions, the comparative analysis of its performance and characteristic is not carried out as yet fully.Existing research to the transmission of magnet coupled resonant type wireless electric energy, usually two or four coils directly are disposed on the testing stand, the research that experimentizes is used very inconvenient, especially, be unfavorable for a plurality of magnet coupled resonant type wireless electric energy transmission systems are analyzed comparison.
Summary of the invention
Therefore, necessaryly provide a kind of easy to use, and can analyze the magnet coupled resonant type wireless power transfer of comparison to a plurality of magnet coupled resonant type wireless electric energy transmission systems easily.
A kind of magnet coupled resonant type wireless power transfer, it comprises: a guide rail; And two coil pedestals that are arranged on this guide rail, described two coil pedestals can be free to slide above the guide rail at this, each coil pedestal comprises a support, and two coil units that are arranged at intervals on this support, and each coil unit comprises a transmission coil and a matched coil.
A kind of magnet coupled resonant type wireless power transfer, it comprises: a guide rail; And two coil pedestals that are arranged on this guide rail, described two coil pedestals can be free to slide above the guide rail at this, and each coil pedestal comprises: at least one supporting seat is arranged on this guide rail; At least one fixed head is arranged on this supporting seat; Many support bars are arranged on this fixed head; And at least one transmission coil winding is arranged on these many support bars.
Compared with prior art, magnet coupled resonant type wireless power transfer provided by the invention has the following advantages: the coil pedestal can be free to slide above the guide rail at this, and is easy to use.
Description of drawings
Fig. 1 is provided for the present invention first by the structural representation of the magnet coupled resonant type wireless power transfer that provides.
Fig. 2 is provided for the present invention second by the structural representation of the magnet coupled resonant type wireless power transfer that provides.
The main element symbol description
| Wireless electric |
10 |
| Guide rail | 12 |
| Track | 120 |
| Scale | 122 |
| The |
14 |
| |
140 |
| Supporting |
1402 |
| Fixed head | 1404 |
| Perforate | 1405 |
| Support bar | 1406 |
| |
1408 |
| |
142 |
| Matched |
144 |
Following specific embodiment will further specify the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Describe the magnet coupled resonant type wireless power transfer that the embodiment of the invention provides in detail below with reference to accompanying drawing.
See also 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 guide rail 12 and two coil pedestals 14 that are arranged on this guide rail 12.Described each coil pedestal 14 comprises a support 140, two transmission coils 142 and two matched coils 144.Described two coil pedestals 14 can be free to slide along this guide rail 12.
The motion track that described guide rail 12 is used for supporting these two coil pedestals 14 and limits these two coil pedestals 14.The material of described guide rail 12 is insulating material, as glass, timber, fiber board or polymer etc., in order to reduce influence to wireless power transmission.The size of the shape of described guide rail 12 is not limit, and it can be selected as required.Described guide rail 12 definition one track 120.This track 120 can be a groove or a raised line.This track 120 can be linear pattern or shaped form.The length of this track 120 can be selected as required.The bottom surface of described guide rail 12 or side can indicate scale 122.When coil pedestal 14 when guide rail 12 moves, can read easily between the transmission coil 142, between the matched coil 144, or the distance between transmission coil 142 and the matched coil 144.Further, the bottom surface of described guide rail 12 is provided with a plurality of isolating pad (not shown), so that protect this guide rail 12 not to be damaged.This isolating pad can be rubber blanket etc.
Described support 140 is used for supporting this transmission coil 142 and matched coil 144.Described support 140 comprises 1402, three fixed heads 1404 of two supporting seats, and eight support bars 1406.Described two supporting seats 1402 arrange, and be fixedly installed on slidably on the guide rail 12 at interval.Described three fixed heads 1404 are parallel to each other and the space arranges, and two fixed heads 1404 on both sides are separately fixed on two supporting seats 1402.Described eight support bars, 1406 parallel interval settings, and an end of these eight support bars 1406 is positioned on the annulus.Described eight support bars 1406 string together three fixed heads 1404, and the part unsettled setting of these eight support bars 1406 between adjacent two fixed heads 1404.Therefore, described coil pedestal 14 can slide along with the slip of supporting seat 1402.
As long as be appreciated that the quantity of described supporting seat 1402 is not limited to two and can supports this fixed head 1404.For example, these three fixed heads 1404 can at interval and be fixedly set on the same long supporting seat 1402.
The quantity that is appreciated that described fixed head 1404 is not limited to three, as long as can this support bar 1406 is fixing.For example, the fixed head 1404 of this centre can omit.Further, described fixed head 1404 has eight equally distributed perforates 1405 of annular, is used for embedding support bar 1406.The shape and size of these eight perforates 1405 are identical with the shape and size of the cross section of described support bar 1406, in order to embed support bar 1406.The perforate 1405 of the fixed head 1404 on described both sides can also can be blind hole for through hole.The perforate 1405 of described center fixed plate 1404 is through hole.The perforate 1405 that is appreciated that the fixed head 1404 on these both sides is optional structure, and this support bar 1406 also can be fixed on this fixed head 1404 by modes such as colloid or rivets.
The number that is appreciated that described support bar 1406 is not limited to eight, can also be three, four, five, six, ten, 12,16 or more, as long as can make transmission coil 142 and matched coil 144 form the coil of sub-circular.Described support bar 1406 also can not parallelly arrange, and lays respectively on the different annulus of two radiuses as, described support bar 1406 two ends.
Described supporting seat 1402, fixed head 1404, and the material of support bar 1406 is insulating material, as glass, timber, fiber board or polymer etc.Described supporting seat 1402, fixed head 1404, and the shape of support bar 1406, size and spacing do not limit, it can be selected as required.
Described two transmission coils 142 and two matched coils 144 all are wrapped on the overhanging portion of eight support bars 1406.The order of described two transmission coils 142 and two matched coils 144 is not limit, as long as guarantee that each transmission coil 142 is adjacent with a matched coil 144.The lead two ends of described transmission coil 142 connect the lumped capacitance (not shown) respectively, constitute the closed-loop path.The lead two ends of described matched coil 144 can connect power supply or load.Be appreciated that this matched coil 144 becomes a power coil when the lead two ends of this matched coil 144 connect power supply; When the lead two ends of this matched coil 144 connected load, this matched coil 144 became a loading coil.
The size of described two transmission coils 142 and two matched coils 144 can be identical, also can be different.Preferably, described two transmission coils 142 and two matched coils 144 is big or small identical.The coil canoe of described two transmission coils 142 and two matched coils 144 is not limit, and can twine for single or multiple lift.The coil turn of described two transmission coils 142 and two matched coils 144 is not limit, and can select as required.Preferably, the coil turn of described transmission coil 142 is more, and usually greater than 10 circles, and the coil turn of described matched coil 144 is less, is generally 2 to 5 circles.Coupling coefficient between described transmission coil 142 and the matched coil 144 can pass through to regulate the distance between transmission coil 142 and the matched coil 144, or realizes by the difformity of regulating transmission coil 142 and matched coil 144.Because transmission coil 142 is only supported by the support bar 1406 of support 140, transmission coil 142 is inner be hollow structure substantially, is conducive to reduce the dielectric loss that transmission system produces in the medium around, the efficiency of transmission of raising system.Be appreciated that the matched coil 144 that each transmission coil 142 is adjacent can be defined as a coil unit.Therefore, each coil pedestal 14 comprises two coil units.
The quantity that is appreciated that the transmission coil 142 of described each coil pedestal 14 is not limited to two, also can be one, or three etc.The quantity of the matched coil 144 of described each coil pedestal 14 also is not limited to two, can be one, three or do not have matched coil 144 etc.Can be built into two loop constructions or four loop constructions as long as guarantee the transmission coil 142 of this magnet coupled resonant type wireless power transfer 10 and matched coil 144.
In the present embodiment, described guide rail 12, supporting seat 1402, and fixed head 1404 all adopts polymethyl methacrylate (PMMA) material preparation, and its good insulating, intensity is big, and dielectric loss is little, is easy to machine-shaping.Described support bar 1406 adopts the timber preparation.Described guide rail 12 is an elongated plates, and this elongated plates has a strip groove as described track 120.The bottom surface of described strip groove and side are smooth surface, are free to slide above the guide rail 12 at this so that supporting seat 1402 drives this coil pedestal 14.Two sidewalls of described strip groove all part extend to this strip inside grooves direction, in order to supporting seat 1402 is fixed on described guide rail 12.Described supporting seat 1402 is a convex shape structure, and it comprises that a cuboid base and is arranged at the boss on this cuboid base.The length of this base is slightly less than the width of described strip groove, so that embed described track 120, and can slide at this guide rail 12.Described fixed head 1404 is cirque structure, and this fixed head 1404 is near eight the rectangle perforates 1405 that evenly distribute on the circumference of outer shroud, and adjacent two perforates 1405 be spaced apart 45 radians.Described support bar 1406 is wooden strip cuboid, and it is in light weight, and is cheap.Described transmission coil 142 and matched coil 144 are the density-winding solenoid coil that adopts the copper conductor that is surrounded by insulating barrier.Described two transmission coils 142 lay respectively at the position of two fixed heads 1404 on close both sides between adjacent two fixed heads 1404.Described two matched coils 144 lay respectively between each transmission coil 142 and the center fixed plate 1404, and arrange near transmission coil 142.
See also Fig. 2, second 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 guide rail 12 and two coil pedestals 14 that are arranged on this guide rail 12.Described coil pedestal 14 comprises 140, two transmission coils 142 of a support, and two matched coils 144.Described two coil pedestals 14 can be free to slide above the guide rail 12 at this.
The structure of the magnet coupled resonant type wireless power transfer 10 that magnet coupled resonant type wireless power transfer 10 and the first embodiment of the invention that second embodiment of the invention provides provides is basic identical, its difference is, described support 140 only comprises two supporting seats 1402 and a hollow columnar supporter 1408, and described transmission coil 142 and matched coil 144 twine and be arranged at this hollow columnar supporter 1408 surfaces.Described hollow columnar supporter 1408 adopts the insulating material preparation.
In the present embodiment, the material of described hollow columnar supporter 1408 is polytetrafluoroethylene, its good insulating, and intensity is big, and dielectric loss is little, is easy to processing.Described transmission coil 142 and matched coil 144 adopt the copper cash of naked layer to be entwined.Lead spiral in described transmission coil 142 or the matched coil 144 twines, and adjacent coil spacing setting.
Magnet coupled resonant type wireless power transfer 10 provided by the invention can be used for the multisystem comparative analysis experiment of magnet coupled resonant type wireless electric energy transmission.Below how to use for the ease of introducing this magnet coupled resonant type wireless power transfer, with four transmission coils, 142 edge orders from left to right called after first transmission coil 142 successively, second transmission coil, 142, the three transmission coils 142 and the 4th transmission coil 142; With four matched coils, 144 edge orders from left to right called after first matched coil 144, the second matched coils, 144, the three matched coils 144 and the 4th matched coil 144 successively.
If power supply and load are received respectively wherein on any two transmission coils 142, then constitute two loop constructions, the transmission coil 142 that wherein is connected with power supply is transmitting coil, the transmission coil 142 that is connected with load is receiving coil.If power supply and load are received respectively on any two matched coils 144, then constitute four loop constructions, the matched coil 144 that wherein is connected with power supply is power coil, the matched coil 144 that is connected with load is on the loading coil.
When studying the radio transmission characteristics of fixed range, can be with two transmission coils 142 on the same coil pedestal 14 respectively as transmitting coil and receiving coil.According to adopting two loop constructions or four loop constructions, two coil pedestals 14 constitute the transmission system of quadruplet set a distance altogether like this.Be specially first system that is formed by first transmission coil 142 and second transmission coil 142; Second system that is formed by the 3rd transmission coil 142 and the 4th transmission coil 142; The 3rd system that is formed by first transmission coil 142, first matched coil 144, second matched coil 144 and second transmission coil 142; And the Quaternary system of being formed by the 3rd transmission coil 142, the 3rd matched coil 144, the 4th matched coil 144 and the 4th transmission coil 142 system.
When the radio transmission characteristics of research under different distance, can be with two transmission coils 142 on the different coil pedestals 14 respectively as transmitting coil and receiving coil.According to adopting two loop constructions or four loop constructions, two coil pedestals 14 constitute the transmission system of eight cover variable ranges altogether like this.Be specially the 5th system that is formed by first transmission coil 142 and the 3rd transmission coil 142; The 6th system that is formed by first transmission coil 142 and the 4th transmission coil 142; The 7th system that is formed by second transmission coil 142 and the 3rd transmission coil 142; The 8th system that is formed by second transmission coil 142 and the 4th transmission coil 142; The 9th system that is formed by first transmission coil 142, first matched coil 144, the 3rd matched coil 144 and the 3rd transmission coil 142; The tenth system that is formed by first transmission coil 142, first matched coil 144, the 4th matched coil 144 and the 4th transmission coil 142; The 11 system that is formed by second transmission coil 142, second matched coil 144, the 3rd matched coil 144 and the 3rd transmission coil 142; And the tenth two system of being formed by second transmission coil 142, second matched coil 144, the 4th matched coil 144 and the 4th transmission coil 142.
The magnet coupled resonant type wireless power transfer that the embodiment of the invention provides has the following advantages: one, and coil pedestal 14 can be free to slide above the guide rail 12 at this, and is easy to use; Its two, two coil pedestals 14 can constitute 12 cover wireless transmitting systems, are convenient to the similarities and differences of comparison and each transmission system characteristic of analysis.
In addition, those skilled in the art also can do other variations in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (10)
1. magnet coupled resonant type wireless power transfer, it comprises:
One guide rail; And
Two coil pedestals that are arranged on this guide rail, described two coil pedestals can be free to slide above the guide rail at this, each coil pedestal comprises a support, and two coil units that are arranged at intervals on this support, and each coil unit comprises a transmission coil and a matched coil.
2. magnet coupled resonant type wireless power transfer as claimed in claim 1 is characterized in that, described guide rail is an elongated plates, and this elongated plates has a strip groove as track.
3. magnet coupled resonant type wireless power transfer as claimed in claim 2 is characterized in that, bottom surface or the side of described guide rail indicate scale.
4. magnet coupled resonant type wireless power transfer as claimed in claim 2 is characterized in that, described support comprises two supporting seats, three fixed heads, and eight support bars; Described two supporting seats arrange at interval, described three fixed head parallel interval arrange, and two fixed heads on both sides are separately fixed on two supporting seats, described eight support bar parallel interval and the setting of going in ring, and described eight support bars string together three fixed heads.
5. magnet coupled resonant type wireless power transfer as claimed in claim 4 is characterized in that, described supporting seat is a convex shape structure, and it comprises that a cuboid base and is arranged at the boss on this cuboid base.
6. magnet coupled resonant type wireless power transfer as claimed in claim 5 is characterized in that, two sidewalls of described strip groove all part extend to this strip inside grooves direction, in order to supporting seat is fixed on described guide rail.
7. magnet coupled resonant type wireless power transfer as claimed in claim 4, it is characterized in that, described fixed head is cirque structure, this fixed head is evenly eight perforates of distribution on the close circumference of outer shroud, and the shape and size of these eight perforates are identical with the shape and size of the cross section of described eight support bars.
8. magnet coupled resonant type wireless power transfer as claimed in claim 4, it is characterized in that, the part unsettled setting of described eight support bars between adjacent two fixed heads, and described transmission coil and matched coil all are wrapped on the overhanging portion of eight support bars.
9. magnet coupled resonant type wireless power transfer as claimed in claim 2 is characterized in that, described support comprises two supporting seats and a hollow columnar supporter, and described transmission coil and matched coil twine and be arranged at this hollow columnar supporting body surface.
10. magnet coupled resonant type wireless power transfer, it comprises: a guide rail; And two coil pedestals that are arranged on this guide rail, described two coil pedestals can be free to slide above the guide rail at this, and each coil pedestal comprises:
At least one supporting seat is arranged on this guide rail;
At least one fixed head is arranged on this supporting seat;
Many support bars are arranged on this fixed head; And
At least one transmission coil twines and is arranged on these many support bars.
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| CN201310199644.3A CN103280898B (en) | 2013-05-27 | 2013-05-27 | Magnet coupled resonant type wireless power transfer |
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| CN201310199644.3A CN103280898B (en) | 2013-05-27 | 2013-05-27 | Magnet coupled resonant type wireless power transfer |
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Cited By (6)
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| CN103456157A (en) * | 2013-09-23 | 2013-12-18 | 东南大学 | Long distance passive wireless sensor remote-measuring system |
| CN104362774A (en) * | 2014-11-28 | 2015-02-18 | 中南大学 | Magnetic coupling resonant wireless power transmission system for mine hoisting container |
| CN104857665A (en) * | 2015-05-29 | 2015-08-26 | 复旦大学 | LED skipping rope capable of self-generating power and supplying power in wireless transmission mode |
| CN106154081A (en) * | 2016-06-21 | 2016-11-23 | 奇瑞汽车股份有限公司 | High-power wireless charging device detection equipment |
| CN108599394A (en) * | 2018-05-07 | 2018-09-28 | 同济大学 | The wireless charging system and its wireless charging method of energy funneling effect can be achieved |
| CN109038842A (en) * | 2018-07-16 | 2018-12-18 | 华北电力大学 | With the electric car wireless charging magnetic coupler of mobile intermediate coil and application |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103456157A (en) * | 2013-09-23 | 2013-12-18 | 东南大学 | Long distance passive wireless sensor remote-measuring system |
| CN104362774A (en) * | 2014-11-28 | 2015-02-18 | 中南大学 | Magnetic coupling resonant wireless power transmission system for mine hoisting container |
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| CN106154081A (en) * | 2016-06-21 | 2016-11-23 | 奇瑞汽车股份有限公司 | High-power wireless charging device detection equipment |
| CN108599394A (en) * | 2018-05-07 | 2018-09-28 | 同济大学 | The wireless charging system and its wireless charging method of energy funneling effect can be achieved |
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| CN109038842A (en) * | 2018-07-16 | 2018-12-18 | 华北电力大学 | With the electric car wireless charging magnetic coupler of mobile intermediate coil and application |
| CN109038842B (en) * | 2018-07-16 | 2020-12-22 | 华北电力大学 | Electric vehicle wireless charging magnetic coupler with movable intermediate coil and application |
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| CN103280898B (en) | 2015-10-21 |
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