CN103683531B - The resonant wireless power regional structure of two dimension cross type - Google Patents
The resonant wireless power regional structure of two dimension cross type Download PDFInfo
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- CN103683531B CN103683531B CN201310612313.8A CN201310612313A CN103683531B CN 103683531 B CN103683531 B CN 103683531B CN 201310612313 A CN201310612313 A CN 201310612313A CN 103683531 B CN103683531 B CN 103683531B
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Abstract
The present invention relates to the regional structure of two-dimentional cross type for resonant non-contact power, belong to transformer or field of conversion of electrical energy.Two former limit winding parallels of the present invention are powered; Regional structure is symmetrical, adopt two former limit windings respectively around the mode on the right angles face of the right-angled intersection of two differences 180 °, when two former limit windings do not have physical contact, according to magnetic field uniqueness theorem, medium and the sense of current determine unique magnetic field, achieve two former limit windings while not destroying winding connection orthogonal, thus former limit winding realizes symmetry in region.Two former limit windings are orthogonal to be avoided two plates and does not intert the magnetic field power difference problem in vertical drive coil inside region that vertical area causes because structure is asymmetric and vertical drive coil outer region, and four regional magnetic fields achieving criss-cross construction are multi-direction and be evenly distributed.Be applicable to most of non-contact type electric energy transmission occasion.
Description
Technical field
The present invention relates to a kind of cross type regional structure of the multi-direction distribution uniform in magnetic field be applicable in resonant wireless power, belong to transformer or field of conversion of electrical energy.
Background technology
Wireless power technology (WirelessPowerTransfer, WPT) is exactly without any connection physically between power supply and electronic receiving equipment, passes to load by contactless for electric energy.The transformer that WPT system uses former secondary to be separated, effectively overcomes potential safety hazard and the practicality problem of traditional contact charging modes existence.According to delivery of electrical energy principle, WPT technology can be divided into three kinds: microwave type WPT, induction WPT, electromagentic resonance formula WPT.Resonant WPT utilizes coil to carry out Energy Transfer under resonance condition.Compared with induction WPT, electromagentic resonance formula WPT reduces the susceptibility of coil relative position, and can realize longer-distance wireless energy transfer.Compared with microwave type WPT, electromagentic resonance formula WPT operating frequency is relatively low, low electromagnetic, can meet the requirement of electromagnetic compatibility.
Build a wireless power region, medical, commercial, there is actual application prospect the aspects such as family expenses.Electromagentic resonance formula relies on the feature of middle distance transmission, low electromagnetic, is applicable to build wireless power region.
Current resonant non-contact power region, Solja i M, KursA, KaralisA, etal, " Wirelesspowertransferviastronglycoupledmagneticresonance s [J] ", Sciencexpress, the power supply area structure of 2007,112 (6): the 1-10 unicoil excitations studied, magnetic direction is single, can not ensure that receiving coil can both receive enough energy in multiple directions, in order to solve the single problem of magnetic direction, ToshioIshizaki, SatoshiNojiri, TetsuyaIshida, IkuoAwai, IkuoAwai, " 3-DFree-AccessWPTsystemforchargingmovableterminals ", IEEE, 2012:219-222 proposes the power supply area structure of two vertical interspersed coil stimulatings, an excitation coil is increased in the vertical direction of single excitation coil, regional magnetic field realizes multi-direction, but because regional structure is asymmetric, Distribution of Magnetic Field is uneven, vertical drive coil inside regional magnetic field intensity is large, vertical drive coil outer regional magnetic field intensity is little, K.O ' Brien, G.Scheible, H.Gueldner, " Designoflargeair-gaptransformersforwirelesspowersupplies ", the quadrangle power supply area that IEEE, 2003:1557-1562ABB company is studied, four excitation coil regional structures achieve the multi-direction of magnetic field, but interior zone magnetic field intensity is large, and perimeter magnetic field intensity is little, and Distribution of Magnetic Field is uneven.Thisly need magnetic field multi-direction and the occasion of distribution uniform inapplicable powering for multiple mobile terminal etc.How to build the multi-direction and region be evenly distributed, magnetic field, become a considerable problem in resonant non-contact power region.
Summary of the invention
The object of the invention is to overcome existing power supply area Distribution of Magnetic Field uneven, there is the problem in strong and weak region, obvious magnetic field, design a kind of realize spatially magnetic field by outwards disperse multi-direction of central point and distribution uniform resonant wireless power regional structure.
A kind of two-dimentional cross type is used for the regional structure of resonant non-contact power, comprise regional structure and the former limit winding of supporting bracket composition, it is characterized in that: described regional structure is made up of four pieces of supporting brackets, four pieces of supporting brackets intersect at same axis place and form criss-cross construction, and adjacent shore plates is perpendicular to one another; If four pieces of supporting brackets are along being denoted as plate one, plate two, plate three, plate four successively clockwise, described axis is called coaxial line; Above-mentioned plate one and plate two are evenly wound with the first spiral type former limit winding, plate three and plate four are evenly wound with the second spiral type former limit winding; The winding placement of above-mentioned first spiral type former limit winding on plate one is identical with the winding placement of the second spiral type former limit winding on plate four; The winding placement of above-mentioned first spiral type former limit winding on plate two is identical with the winding placement of the second spiral type former limit winding on plate three; The second spiral type former limit winding on the first spiral type former limit winding on above-mentioned plate one and plate three is completely the same at the sense of current at coaxial line place; The second spiral type former limit winding on the first spiral type former limit winding on above-mentioned plate two and plate four is completely the same at the sense of current at coaxial line place; Above-mentioned first spiral type former limit winding and the second spiral type former limit winding are physically not in contact with each other, parallel operation.
The technical characteristics of the present invention compared with existing resonant non-contact power regional structure is that two former limit winding parallels are powered; Regional structure is symmetrical, adopt two former limit windings respectively around the mode on the right angles face of the right-angled intersection of two differences 180 °, when two former limit windings do not have physical contact, according to magnetic field uniqueness theorem, medium and the sense of current determine unique magnetic field, achieve two former limit windings while not destroying winding connection orthogonal, thus former limit winding realizes symmetry in region.Two former limit windings are orthogonal to be avoided two plates and does not intert the magnetic field power difference problem in vertical drive coil inside region that vertical area causes because structure is asymmetric and vertical drive coil outer region, and four regional magnetic fields achieving criss-cross construction are multi-direction and be evenly distributed.Be applicable to most of non-contact type electric energy transmission occasion.
The first described spiral type former limit winding and the geometry of the second spiral type former limit winding are polygon or circle.Wherein said polygon can be rectangle or hexagon.
The plane geometric shape of described supporting bracket is polygon or fan-shaped.Wherein said polygon can be rectangle or hexagon.
Described supporting bracket can be flexible board or rigid plate.Form or rigid board connector, the gummed combination such as acrylic with flexible board is folding.
The wire that the first described spiral type former limit winding and the second spiral type former limit winding can adopt is solid conductor, or Litz line or PCB winding.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of two-dimentional cross type for the regional structure of resonant non-contact power of a kind of rectangular slab composition in the present invention;
Fig. 2 is the schematic diagram of two-dimentional cross type for the regional structure of resonant non-contact power of a kind of circular slab composition in the present invention;
Fig. 3 is the schematic diagram of two-dimentional cross type for the regional structure of resonant non-contact power of a kind of hexagonal plate composition in the present invention;
Fig. 4 is the structural representation of a kind of rectangle winding technique form in the present invention;
Fig. 5 is the structural representation (side) of a kind of circular winding technique form in the present invention;
Fig. 6 is the structural representation (front) of a kind of hexagon winding technique form in the present invention;
Fig. 7 is the structural representation of the interspersed vertical area of two plates of existing a kind of rectangle winding technique form;
Fig. 8 is the magnetic field simulation comparison diagram of the interspersed vertical area (Fig. 8 (2)) of the two-dimentional cross type region of one of the present invention (Fig. 8 (1)) and two plates, and wherein (3) are the line color standards of magnetic field simulation figure.
Embodiment
Accompanying drawing is non-limiting discloses several concrete embodiment of the present invention, and it is as follows that the invention will be further described by reference to the accompanying drawings.
See accompanying drawing 1, its region adopts rectangular slab to combine with two-dimentional right-angled intersection, can be folding in 90 ° with two pieces of flexible boards, and right-angle side connects and composes region altogether, also can connect and compose region by four pieces of rigid plate by connector.
See accompanying drawing 2, its region adopts circular slab to combine with two-dimentional right-angled intersection.
See accompanying drawing 3, its region adopts hexagonal plate to combine with two-dimentional right-angled intersection.
See accompanying drawing 4, be former limit winding with the schematic diagram of rectangle coiling form around the rectangular slab of two-dimentional right-angled intersection, 1. 2. 3. 4. respectively display plate one, plate two, plate three, plate four in figure, solid line describes the first former limit winding, dotted line describes the second former limit winding, and arrow represents the sense of current;
See accompanying drawing 5, be that former limit winding is with the side schematic view of circular coiling form around the circular slab of two-dimentional right-angled intersection;
See accompanying drawing 6, be that former limit winding is with the front schematic view of hexagon coiling form around the hexagonal plate of two-dimentional right-angled intersection;
See accompanying drawing 7, its region adopts the interspersed vertical cartel of two rectangular slabs to form;
Below with limit, accompanying drawing 4 Central Plains winding for the rectangular slab region of rectangle coiling form around right-angled intersection, the interspersed vertical area of two plates in contrast accompanying drawing 7, with the centre section modeling in two regions, utilize commercial finite element emulation software Ansoft2D, set forth in fact now spatially magnetic field by outwards disperse multi-direction of central point and distribution uniform the principle of resonant wireless power regional structure.
Accompanying drawing 8 is based on cross type (Fig. 8 (1)) and the vertical resonant non-contact power regional structure of two plates (the magnetic field simulation result of (Fig. 8 (2)).Under the condition of same rectangular slab length and width, winding length, winding wire diameter, the number of turn and exciting current, two former limit winding parallels are powered.Regional structure is symmetrical, adopt two former limit windings respectively around the mode on the right angles face of the right-angled intersection of two differences 180 °, under two former limit windings do not have physical contact situation, according to magnetic field uniqueness theorem, medium and the sense of current determine unique magnetic field, achieve two former limit windings while not destroying winding connection orthogonal, thus former limit winding realizes symmetry in region.Two former limit windings are orthogonal to be avoided two plates and does not intert the magnetic field power difference problem in vertical drive coil inside region that vertical area causes because structure is asymmetric and vertical drive coil outer region, and four regional magnetic fields achieving criss-cross construction are multi-direction and be evenly distributed.
In sum, the rigid plate such as the plate in the two-dimentional right-angled intersection region in the present invention can fold with flexible board, acrylic are formed by connector combination; Two dimension cross type region can by rectangular slab, circular slab, or the formation such as polygonal panel; The coiling shape of described winding can be rectangle, circular, or polygon etc.; Described winding can adopt selects solid conductor, Litz line or PCB winding.The material of each winding, wire diameter, the number of turn, length should be as far as possible equal, to improve being uniformly distributed of regional magnetic field intensity.
Claims (6)
1. the resonant wireless power regional structure of two-dimentional cross type, comprises regional structure and the former limit winding of supporting bracket composition, it is characterized in that:
Described regional structure is made up of four pieces of supporting brackets, four pieces of supporting brackets intersect at same axis place and form criss-cross construction, adjacent shore plates is perpendicular to one another, if four pieces of supporting brackets are along being denoted as plate one, plate two, plate three, plate four successively clockwise, described axis is called coaxial line;
Above-mentioned plate one and plate two are evenly wound with the first spiral type former limit winding, plate three and plate four are evenly wound with the second spiral type former limit winding;
The winding placement of above-mentioned first spiral type former limit winding on plate one is identical with the winding placement of the second spiral type former limit winding on plate four; The winding placement of above-mentioned first spiral type former limit winding on plate two is identical with the winding placement of the second spiral type former limit winding on plate three;
The second spiral type former limit winding on the first spiral type former limit winding on above-mentioned plate one and plate three is completely the same at the sense of current at coaxial line place; The second spiral type former limit winding on the first spiral type former limit winding on above-mentioned plate two and plate four is completely the same at the sense of current at coaxial line place;
Above-mentioned first spiral type former limit winding and the second spiral type former limit winding are physically not in contact with each other, parallel operation.
2. the resonant wireless power regional structure of two-dimentional cross type according to claim 1, is characterized in that: the first described spiral type former limit winding and the geometry of the second spiral type former limit winding are polygon or circle.
3. the resonant wireless power regional structure of two-dimentional cross type according to claim 2, is characterized in that: described polygon is rectangle or hexagon.
4. the resonant wireless power regional structure of two-dimentional cross type according to claim 1, is characterized in that: the plane geometric shape of described supporting bracket is polygon or fan-shaped.
5. the resonant wireless power regional structure of two-dimentional cross type according to claim 4, is characterized in that: described polygon is rectangle or hexagon.
6. the resonant wireless power regional structure of two-dimentional cross type according to claim 1, is characterized in that: described supporting bracket is flexible board or rigid plate.
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| CN201310612313.8A CN103683531B (en) | 2013-11-28 | 2013-11-28 | The resonant wireless power regional structure of two dimension cross type |
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| CN103683531B true CN103683531B (en) | 2016-03-02 |
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| CN105957701B (en) * | 2016-07-08 | 2018-12-25 | 福州大学 | A kind of modified line rule wireless power transmission magnetic coupling coil design approaches |
| CN109087798B (en) * | 2018-07-26 | 2020-11-10 | 努比亚技术有限公司 | Wireless charging coil assembly |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2458710A1 (en) * | 2009-07-23 | 2012-05-30 | Fujitsu Limited | Power transmission device, wireless power supply system, and wireless power supply device |
| CN202632359U (en) * | 2012-03-21 | 2012-12-26 | 熊文俊 | Near-field payment system based on anti-shield universal antenna patch |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2458710A1 (en) * | 2009-07-23 | 2012-05-30 | Fujitsu Limited | Power transmission device, wireless power supply system, and wireless power supply device |
| CN202632359U (en) * | 2012-03-21 | 2012-12-26 | 熊文俊 | Near-field payment system based on anti-shield universal antenna patch |
Non-Patent Citations (1)
| Title |
|---|
| 基于DXP的PCB无核变压器设计;周党培等;《四川兵工学报》;20110930;第32卷(第9期);文章第102-104、120页 * |
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