CN103683531A - Two-dimensional crisscross resonance type wireless power supply area structure - Google Patents
Two-dimensional crisscross resonance type wireless power supply area structure Download PDFInfo
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- CN103683531A CN103683531A CN201310612313.8A CN201310612313A CN103683531A CN 103683531 A CN103683531 A CN 103683531A CN 201310612313 A CN201310612313 A CN 201310612313A CN 103683531 A CN103683531 A CN 103683531A
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Abstract
The invention relates to a two-dimensional crisscross resonance type wireless power supply area structure and belongs to the field of transformers or electric energy transformation. The symmetrical area structure is characterized in that two primary windings in parallel connection are used for power supply, the two primary windings are respectively wound two crisscross right-angle vertical faces with the angle difference of 180 degrees, under the circumstance that no physical contact exists between the two primary windings, the only magnetic field is determined by medium and current direction according to the magnetic field uniqueness theorem, orthogonality of the two primary windings is achieved while the connection of the two is undestroyed, and the primary windings are symmetrical in the area. Due to the orthogonality of the two primary windings, the magnetic field strength difference, caused by structural asymmetry of a two board non-penetration vertical area, of a vertical excitation coil inside area and a vertical excitation coil outer area can be avoided, and multi-directional and even distribution of four area magnetic fields of the crisscross structure is achieved. The two-dimensional crisscross resonance type wireless power supply area structure is applicable to most non-contact electric energy transmission occasions.
Description
Technical field
The present invention relates to a kind of cross type regional structure that is applicable to the multi-direction distribution uniform in magnetic field in resonant wireless power, belong to transformer or transformation of electrical energy field.
Background technology
Wireless power technology (Wireless Power Transfer, WPT) be exactly between power supply and electronic receiving equipment without any connection physically, pass to load by electric energy is contactless.WPT system is used the transformer of former secondary separation, has effectively overcome potential safety hazard and practicality problem that traditional contact charging modes exists.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.Compare with induction WPT, electromagentic resonance formula WPT reduces the susceptibility of coil relative position, and can realize longer-distance wireless energy transfer.WPT compares with microwave type, and electromagentic resonance formula WPT operating frequency is relatively low, and 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, Kurs A, Karalis A, et al, " Wireless power transfer via strongly coupled magnetic resonances[J] ", Sciencexpress, 2007,112 (6): the power supply area structure of the unicoil excitation that 1-10 studies, magnetic direction is single, can not guarantee that receiving coil can both receive enough energy in multiple directions, in order to solve the problem that magnetic direction is single, Toshio Ishizaki, Satoshi Nojiri, Tetsuya Ishida, Ikuo Awai, Ikuo Awai, " 3-D Free-Access WPT system for charging movable terminals ", IEEE, 2012:219-222 has proposed two vertical power supply area structures of interspersed coil stimulating, vertical direction at single excitation coil increases an excitation coil, regional magnetic field is realized multi-direction, but because regional structure is asymmetric, Distribution of Magnetic Field is inhomogeneous, vertical drive coil inside regional magnetic field intensity is large, vertical drive coil perimeter magnetic field intensity is little, K.O ' Brien, G.Scheible, H.Gueldner, " Design of large air-gap transformers for wireless power supplies ", IEEE, the quadrangle power supply area that 2003:1557-1562 ABB AB is studied, four excitation coil regional structures have realized the multi-direction of magnetic field, but interior zone magnetic field intensity is large, perimeter magnetic field intensity is little, and Distribution of Magnetic Field is inhomogeneous.Be that this magnetic field occasions multi-direction and distribution uniform that need such as a plurality of mobile terminal power supplies are also inapplicable.How to build the region that magnetic field is multi-direction and be evenly distributed, become a considerable problem in resonant non-contact power region.
Summary of the invention
The object of the invention is in order to overcome existing power supply area Distribution of Magnetic Field inhomogeneous, there is the problem in strong and weak region, obvious magnetic field, design a kind of realize multi-direction and distribution uniform that spatially magnetic field is outwards dispersed by central point resonant wireless power regional structure.
A kind of two-dimentional cross type is for the regional structure of resonant non-contact power, comprise regional structure and former limit winding that supporting bracket forms, it is characterized in that: described regional structure is comprised of four supporting brackets, four supporting brackets intersect at same axis place and form criss-cross construction, and adjacent shore plates is perpendicular to one another; If four supporting brackets are along being denoted as successively plate one, plate two, plate three, plate four clockwise, described axis is called coaxial line; On above-mentioned plate one and plate two, be evenly wound with the first former limit of spiral type winding, on plate three and plate four, be evenly wound with the second former limit of spiral type winding; The winding placement of above-mentioned the first former limit of spiral type winding on plate one is identical with the winding placement of the second former limit of spiral type winding on plate four; The winding placement of above-mentioned the first former limit of spiral type winding on plate two is identical with the winding placement of the second former limit of spiral type winding on plate three; The the second former limit of spiral type winding on the first spiral type former limit winding on above-mentioned plate one and plate three is in full accord at the sense of current at coaxial line place; The the second former limit of spiral type winding on the first spiral type former limit winding on above-mentioned plate two and plate four is in full accord at the sense of current at coaxial line place; Above-mentioned the first former limit of spiral type winding does not physically contact mutually with the second former limit of spiral type winding, parallel operation.
The present invention is that two former limit winding parallels are powered with the technical characteristics that existing resonant non-contact power regional structure is compared; Regional structure is symmetrical, adopt two former limit windings respectively around two modes that differ on the right angle vertical plane of right-angled intersection of 180 °, in the situation that 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, realized two former limit winding quadratures when not destroying winding connection, symmetrical thereby former limit winding is realized in region.Two former limit winding quadratures have avoided two plates not intert vertical drive coil inside region that vertical area causes because structure is asymmetric and the magnetic field power difference problem of vertical drive coil perimeter, have realized four regional magnetic fields of criss-cross construction multi-direction and be evenly distributed.Be applicable to most of non-contact type electric energy transmission occasions.
The first described spiral type former limit winding and the geometry of the former limit of the second spiral type 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.With flexible board is folding, form or rigid board connector, the gummed combination such as acrylic.
The wire that the first described spiral type former limit winding and the former limit of the second spiral type winding can adopt is solid conductor, or Litz line or PCB winding.
Accompanying drawing explanation
Fig. 1 is that the two-dimentional cross type of a kind of rectangular slab composition in the present invention is for the schematic diagram of the regional structure of resonant non-contact power;
Fig. 2 is that the two-dimentional cross type of a kind of circular slab composition in the present invention is for the schematic diagram of the regional structure of resonant non-contact power;
Fig. 3 is that the two-dimentional cross type of a kind of hexagonal plate composition in the present invention is for the schematic diagram of the regional structure of resonant non-contact power;
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 that two plates of existing a kind of rectangle winding technique form do not intert the structural representation of vertical area;
Fig. 8 is that a kind of two-dimentional cross type of the present invention region (Fig. 8 (1)) and two plates do not intert the magnetic field simulation comparison diagram of vertical area (Fig. 8 (2)), 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.
Referring to accompanying drawing 1, its region adopts rectangular slab to combine with two-dimentional right-angled intersection, can be 90 ° with two flexible boards are folding, and right-angle side connects and composes region altogether, also can by connector, connect and compose region by four rigid plate.
Referring to accompanying drawing 2, its region adopts circular slab to combine with two-dimentional right-angled intersection.
Referring to accompanying drawing 3, its region adopts hexagonal plate to combine with two-dimentional right-angled intersection.
Referring to accompanying drawing 4, be former limit winding with rectangle coiling form the schematic diagram 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 is described the first former limit winding, dotted line is described the second former limit winding, and arrow represents the sense of current;
Referring to accompanying drawing 5, be former limit winding with circular coiling form the side schematic view around the circular slab of two-dimentional right-angled intersection;
Referring to accompanying drawing 6, be former limit winding with hexagon coiling form the front schematic view around the hexagonal plate of two-dimentional right-angled intersection;
Referring to accompanying drawing 7, its region adopts the interspersed vertical cartel of two rectangular slabs to form;
With accompanying drawing 4 limit, Central Plains windings, take rectangle coiling form around the rectangular slab region of right-angled intersection as example below, the interspersed vertical area of two plates in contrast accompanying drawing 7, centre section modeling with two regions, utilize commercial finite element emulation software Ansoft 2D, set forth the existing multi-direction and distribution uniform that spatially magnetic field is outwards dispersed by central point in fact 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 parallel power supplies.Regional structure is symmetrical, adopt two former limit windings respectively around two modes that differ on the right angle vertical plane of right-angled intersection of 180 °, at two former limit windings, do not have in physical contact situation, according to magnetic field uniqueness theorem, medium and the sense of current determine unique magnetic field, realized two former limit winding quadratures when not destroying winding connection, symmetrical thereby former limit winding is realized in region.Two former limit winding quadratures have avoided two plates not intert vertical drive coil inside region that vertical area causes because structure is asymmetric and the magnetic field power difference problem of vertical drive coil perimeter, have realized four regional magnetic fields of criss-cross construction multi-direction and be evenly distributed.
In sum, the plate in the two-dimentional right-angled intersection region in the present invention can be folding with flexible board, the rigid plate such as acrylic forms by connector combination; Two dimension cross type region can be by rectangular slab, circular slab, or the formation such as polygonal panel; The coiling shape of described winding can be rectangle, circle, 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 equate as far as possible, to improve being uniformly distributed of regional magnetic field intensity.
Claims (7)
1. two-dimentional cross type, for a regional structure for resonant non-contact power, comprises regional structure and former limit winding that supporting bracket forms, it is characterized in that:
Described regional structure is comprised of four supporting brackets, four supporting brackets intersect at same axis place and form criss-cross construction, adjacent shore plates is perpendicular to one another, and establishes four supporting brackets along being denoted as successively plate one, plate two, plate three, plate four clockwise, and described axis is called coaxial line;
On above-mentioned plate one and plate two, be evenly wound with the first former limit of spiral type winding, on plate three and plate four, be evenly wound with the second former limit of spiral type winding;
The winding placement of above-mentioned the first former limit of spiral type winding on plate one is identical with the winding placement of the second former limit of spiral type winding on plate four; The winding placement of above-mentioned the first former limit of spiral type winding on plate two is identical with the winding placement of the second former limit of spiral type winding on plate three;
The the second former limit of spiral type winding on the first spiral type former limit winding on above-mentioned plate one and plate three is in full accord at the sense of current at coaxial line place; The the second former limit of spiral type winding on the first spiral type former limit winding on above-mentioned plate two and plate four is in full accord at the sense of current at coaxial line place;
Above-mentioned the first former limit of spiral type winding does not physically contact mutually with the second former limit of spiral type winding, parallel operation.
2. two-dimentional cross type according to claim 1, for the regional structure of resonant non-contact power, is characterized in that: the first described spiral type former limit winding and the geometry of the former limit of the second spiral type winding are polygon or circle.
3. two-dimentional cross type according to claim 2, for the regional structure of resonant non-contact power, is characterized in that: described polygon is rectangle or hexagon.
4. two-dimentional cross type according to claim 1, for the regional structure of resonant non-contact power, is characterized in that: the plane geometric shape of described supporting bracket is polygon or fan-shaped.
5. two-dimentional cross type according to claim 4, for the regional structure of resonant non-contact power, is characterized in that: described polygon is rectangle or hexagon.
6. two-dimentional cross type according to claim 1, for the regional structure of resonant non-contact power, is characterized in that: described supporting bracket is flexible board or rigid plate.
7. two-dimentional cross type according to claim 1, for the regional structure of resonant non-contact power, is characterized in that: the wire that the first described spiral type former limit winding and the former limit of the second spiral type winding adopt is solid conductor, Litz line or PCB winding.
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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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| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105957701A (en) * | 2016-07-08 | 2016-09-21 | 福州大学 | Design method for wireless electric energy transmission magnetic coupling coil with variable wire specifications |
| CN109087798A (en) * | 2018-07-26 | 2018-12-25 | 努比亚技术有限公司 | A kind of wireless charging electric wire 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 |
-
2013
- 2013-11-28 CN CN201310612313.8A patent/CN103683531B/en active Active
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 |
|---|
| 周党培等: "基于DXP的PCB无核变压器设计", 《四川兵工学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105957701A (en) * | 2016-07-08 | 2016-09-21 | 福州大学 | Design method for wireless electric energy transmission magnetic coupling coil with variable wire specifications |
| CN109087798A (en) * | 2018-07-26 | 2018-12-25 | 努比亚技术有限公司 | A kind of wireless charging electric wire coil assembly |
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| CN103683531B (en) | 2016-03-02 |
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