CN104037957A - Multi-degree-of-freedom electricity pickup mechanism of wireless power transmission system - Google Patents
Multi-degree-of-freedom electricity pickup mechanism of wireless power transmission system Download PDFInfo
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- CN104037957A CN104037957A CN201410304686.3A CN201410304686A CN104037957A CN 104037957 A CN104037957 A CN 104037957A CN 201410304686 A CN201410304686 A CN 201410304686A CN 104037957 A CN104037957 A CN 104037957A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 35
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- 238000009434 installation Methods 0.000 abstract description 3
- 230000006698 induction Effects 0.000 description 5
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- 238000010168 coupling process Methods 0.000 description 4
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- 230000005674 electromagnetic induction Effects 0.000 description 2
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Abstract
The invention discloses a multi-degree-of-freedom electricity pickup mechanism of a wireless power transmission system. The mechanism comprises pickup coils and is characterized in that the pickup coils are wound on six cylindrical magnetic cores, the six magnetic cores where the pickup coils are wound are fixed according to a triangular-pyramid-shaped six-ridge space distribution structure, the pickup coils on the six magnetic cores are in serial connection according to a preset sequence, and magnetic flux generated by three pickup coils on the same plane is not annular. The mechanism has the advantages that the structure is simple, installation is convenient to achieve, and multi-degree-of-freedom energy pickup in the wireless power transmission system can be achieved by changing the coil distribution mode and the winding mode of the pickup mechanism; when the pickup mechanism is fixed, an emission mechanism can be coupled in any direction, and when the emission mechanism is fixed, the pickup mechanism can freely rotate in a three-dimensional space, so that energy can be conveniently and freely accessed.
Description
Technical field
The present invention relates to electromagnetic coupled technology, be specifically related to the multiple degrees of freedom pick up mechanism in a kind of radio energy transmission system.
Background technology
Induction coupling delivery of electrical energy (Inductively Coupled Power Transfer, being called for short ICPT) technology is the wireless power transmission pattern based on electromagnetic induction coupling principle, the power supply that has solved mobile electrical equipment flexibly, safety, green access problem, be one of current wireless power transmission area research focus.
Based on electromagnetic induction coupling principle, using two coils, near as electromagnetic coupled mechanism, in the time that electric current changes in a coil, the magnetic flux producing becomes medium, causes also producing in another coil electromotive force.Efficiency of transmission between two coils is mainly to be determined by the effective area of the induction coupling surface in pick-up winding and magnetic field, due to the spatial characteristic in magnetic field, causes the dimensional orientation in induction coil and magnetic field to be subject to strict restriction.Common coil is discoid or cylindric, can obtain larger charging region and efficiency of transmission, still, if mechanism for picking rotates in three dimensions, is just difficult to realize multiple degrees of freedom pick up.
Summary of the invention
For above-mentioned defect, the present invention proposes a kind of radio energy transmission system multiple degrees of freedom pick up mechanism, this mechanism, by changing structure and the winding mode of pick-up winding, realizes pick-up winding and can rotate by multiple degrees of freedom in ensureing energy transmission efficiency, allows energy pick up more flexible.
In order to achieve the above object, concrete technical scheme of the present invention is as follows:
One radio energy transmission system multiple degrees of freedom pick up mechanism, comprise pick-up winding, its key is: described pick-up winding is wound on respectively on six columniform magnetic cores, described six magnetic cores that are wound with pick-up winding are fixed according to the spatial distribution structure of six ribs of Mitsubishi's taper, article six, the pick-up winding on magnetic core is connected in series according to default order, three not loopings of magnetic flux that pick-up winding produces on same plane.
Based on above-mentioned design, this programme has changed traditional discoid or cylindric pick-up winding into solid space distribution shape, on six ribs of Mitsubishi's taper, fix respectively a magnetic core that is wound with pick-up winding, article six, the pick-up winding on magnetic core is cascaded, in solid space, the magnetic field that any direction enters, total magnetic flux on mechanism for picking is to respond to magnetic flux sum on each rib, on every rib, the magnetic flux of pick-up winding has both direction, by combinatory analysis, can adjust the winding mode of pick-up winding, realize mechanism for picking the picking up of ceiling capacity in free space.
For the equilibrium that ensures that all directions energy picks up, described six magnetic cores measure-alike.
For easy-to-connect, on described six magnetic cores, the pick-up winding of coiling adopts same wire segmentation coiling to form.
In order to improve the stability of mechanism for picking, the installation of being convenient to magnetic core is fixed, this mechanism for picking also comprises Mitsubishi's pyramidal frame, offers groove along the direction of every rib of Mitsubishi's pyramidal frame, and described six magnetic cores that are wound with pick-up winding are separately fixed in the groove on six ribs of Mitsubishi's pyramidal frame.
In order to reduce interference, described Mitsubishi pyramidal frame is that non-magnet material is made.
As preferably, described Mitsubishi pyramidal frame is the taper of positive Mitsubishi or positive tetrahedron shape.
In order to ensure that multiple degrees of freedom energy even picks up, the groove on every rib of described Mitsubishi's pyramidal frame is identical with the vertex distance at these rib two ends.
Remarkable result of the present invention is:
Simple in structure, easy for installation, by changing coil distribution form and the winding mode of mechanism for picking, the energy multiple degrees of freedom of realizing in wireless energy transfer system picks up, and when mechanism for picking is fixed, trigger mechanism can be coupled from any direction, when trigger mechanism is fixed, mechanism for picking also can rotate freely in three dimensions, makes energy access more convenient, freer.
Brief description of the drawings
Fig. 1 is pick-up winding spatial distribution structural representation of the present invention;
Fig. 2 is the structural representation of mounting framework in specific embodiment;
Fig. 3 is the flux distribution on any rib;
Fig. 4 is flow direction schematic diagram on every rib in the time that AB rib rotates;
Fig. 5 is the coiling conceptual scheme of specific embodiment.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
As shown in Figure 1, one radio energy transmission system multiple degrees of freedom pick up mechanism, comprise pick-up winding, described pick-up winding is wound on respectively on six columniform magnetic cores, described six magnetic cores that are wound with pick-up winding are fixed according to the spatial distribution structure of six ribs of Mitsubishi's taper, article six, the pick-up winding on magnetic core is connected in series according to default order, three not loopings of magnetic flux that pick-up winding produces on same plane.
In the present embodiment, this mechanism for picking is provided with Mitsubishi's pyramidal frame as shown in Figure 2, this Mitsubishi's pyramidal frame is that non-magnet material is made, it is shaped as the taper of positive Mitsubishi or positive tetrahedron shape, direction along every rib of Mitsubishi's pyramidal frame offers groove, groove on every rib is identical with the vertex distance at these rib two ends, described six magnetic cores that are wound with pick-up winding are separately fixed in the groove on six ribs of Mitsubishi's pyramidal frame, conventionally the groove length on each rib is identical, article six, magnetic core is measure-alike, article six, on magnetic core, the pick-up winding of coiling adopts same wire segmentation coiling to form.
For further understanding operation principle of the present invention and technique effect, do progressive detailed description in detail below.
In conjunction with Fig. 2 and Fig. 3 analysis, establishing triangular pyramid rib long is l, at distance two endvertex d
1a groove is dug at place, and for placing magnetic core and coiled wire-wound coil, the FERRITE CORE of employing is a kind of cylindrical high frequency permeability magnetic material, and body diameter is d
2, known in conjunction with the groove of Mitsubishi's cone, core length is l-2d
1, the diameter of wire of selected pick-up winding is d
3.
Suppose that primary coil is plane, straight up, the coil flux on any rib is analyzed as follows magnetic flux B:
Suppose
for magnetic core and X, the angle of Y plane, perpendicular to the magnetic flux density of coil:
Magnetic flux by this crest line circle place is:
N is coil turn on every rib, and S is every circle coil-winding area, Φ
bArepresent that flow direction points to A by B and holds.
By the magnetic flux on known every the rib of formula (2), when triangular pyramid rotates to all angles, pass through the total magnetic flux φ=φ on six ribs
aB+ φ
aC+ φ
aD+ φ
bC+ φ
bD+ φ
cD.
Because the coil on six ribs of triangular pyramid adopts series system, the electric current on every rib has both direction, and induction magnetic flux also has both direction, and the magnetic flux of six rib inductions exists the situation that mutually strengthens and offset, and the combination of flow direction has 2
6=64 kinds.Sectional area S=the π ((d of coil
2+ 2d
3)/2)
2.When primary current I, turn number N, coil section amass in the certain situation of S, due to tetrahedral symmetry, when rotated, 64 kinds of combinations calculate 6 kinds of different flux change.Below respectively taking the different flux change of 6 classes for example (AB as 1 magnetic flux that represents rib AB along rib AB upwards, be that 0 expression is downward along rib AB), concrete compound mode is as shown in table 1.
Table 1: flow direction assembled scheme (former secondary distance is 1cm)
In each scheme, all not only a kind of combinations, specifically can see attached list 1.Here adopt scheme one wherein a kind of magnetic flux combine as design.Because coil is to be connected in series, only relevant with direction when coiling, and sequence independence between rib.If but coiling when connects the some planes of tetrahedron, induced electricity fails to be convened for lack of a quorum and forms an annular, the magnetic flux that produces of annular can offset with the magnetic flux that produces on this rib when rotated, so should avoid this situation when coiling, the magnetic flux assembled scheme adopting in this example as shown in Figure 4.
Suppose that electric current is from I
inflow into rib AB, coiling order is: AB → BC → CD → DA → DB → CA (being connected in series order can change), electric current I
outflow out from rib CA, be beneficial to pick-up winding that a wire winds up as shown in Figure 5.
By theory analysis, according to the method for winding shown in the magnetic flux combination shown in figure tetra-and Fig. 5, mechanism for picking is wound the line, on every rib, individual layer is around 25 circles, diameter of wire is 3mm, is in 40KHz situation in frequency, and former limit adopts two-layer disk coil, radius is 14cm, and the number of turn is 62 circles, L
p=374uH, R
p=0.26 Ω, secondary L
s=151uH, R
s=0.67 Ω.Experiment adopts S-S structure, is 10V at input voltage, and load is 5 ohm, and former secondary distance is 0 o'clock, and triangular pyramid can reach 84% in the time that AB rib 360 is spent rotation efficiency maximum, and minimum is 33.5%.
Finally it should be noted that, above detailed description is only preferred embodiment of the present invention.Should be appreciated that those of ordinary skill in the art just can design according to the present invention make many modifications and variations without creative work.Therefore, all technical staff in the art, all should be in by the determined protection range of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Subordinate list 1: flow direction assembled scheme (former secondary distance is 1cm)
Claims (7)
1. a radio energy transmission system multiple degrees of freedom pick up mechanism, comprise pick-up winding, it is characterized in that: described pick-up winding is wound on respectively on six columniform magnetic cores, described six magnetic cores that are wound with pick-up winding are fixed according to the spatial distribution structure of six ribs of Mitsubishi's taper, article six, the pick-up winding on magnetic core is connected in series according to default order, three not loopings of magnetic flux that pick-up winding produces on same plane.
2. radio energy transmission system multiple degrees of freedom pick up according to claim 1 mechanism, is characterized in that: described six magnetic cores measure-alike.
3. radio energy transmission system multiple degrees of freedom pick up according to claim 1 mechanism, is characterized in that: on described six magnetic cores, the pick-up winding of coiling adopts same wire segmentation coiling to form.
4. according to the radio energy transmission system multiple degrees of freedom pick up mechanism described in claim 1-3 any one, it is characterized in that: also comprise Mitsubishi's pyramidal frame, direction along every rib of Mitsubishi's pyramidal frame offers groove, and described six magnetic cores that are wound with pick-up winding are separately fixed in the groove on six ribs of Mitsubishi's pyramidal frame.
5. radio energy transmission system multiple degrees of freedom pick up according to claim 4 mechanism, is characterized in that: described Mitsubishi pyramidal frame is that non-magnet material is made.
6. radio energy transmission system multiple degrees of freedom pick up according to claim 4 mechanism, is characterized in that: described Mitsubishi pyramidal frame is the taper of positive Mitsubishi or positive tetrahedron shape.
7. radio energy transmission system multiple degrees of freedom pick up according to claim 6 mechanism, is characterized in that: the groove on every rib of described Mitsubishi's pyramidal frame is identical with the vertex distance at these rib two ends.
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| CN201410304686.3A CN104037957B (en) | 2014-06-30 | 2014-06-30 | Radio energy transmission system multiple degrees of freedom pick up mechanism |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935388A (en) * | 2017-02-23 | 2017-07-07 | 福州大学 | A kind of Multiple coil magnetic coupling receiving coil structure |
| CN106953426A (en) * | 2017-04-21 | 2017-07-14 | 天津工业大学 | A kind of novel radio electric energy transmission omnidirectional three dimensional emission coil device |
| CN109450115A (en) * | 2018-12-29 | 2019-03-08 | 深圳蔚蓝无限科技有限公司 | The transmitting terminal of radio energy emitter and wireless charging |
| CN109755007A (en) * | 2018-12-03 | 2019-05-14 | 北京航空航天大学 | Four coil system of space and mini octopus robot |
| CN112865337A (en) * | 2021-01-22 | 2021-05-28 | 华中科技大学 | Multi-degree-of-freedom multi-load wireless electric energy transmission device |
| CN112865325A (en) * | 2021-01-29 | 2021-05-28 | 重庆大学 | Tripolar planar transmitting mechanism, transmission system thereof and current vector modulation method |
| CN117727542A (en) * | 2023-12-18 | 2024-03-19 | 青岛科技大学 | Butt-joint type magnetic coupling structure for underwater wireless energy transmission |
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| CN102005829A (en) * | 2010-12-03 | 2011-04-06 | 重庆大学 | Magnetic field tracking servo mechanism for wireless electric power transmission system |
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| CN102005829A (en) * | 2010-12-03 | 2011-04-06 | 重庆大学 | Magnetic field tracking servo mechanism for wireless electric power transmission system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935388A (en) * | 2017-02-23 | 2017-07-07 | 福州大学 | A kind of Multiple coil magnetic coupling receiving coil structure |
| CN106935388B (en) * | 2017-02-23 | 2018-07-20 | 福州大学 | A kind of Multiple coil magnetic coupling receiving coil structure |
| CN106953426A (en) * | 2017-04-21 | 2017-07-14 | 天津工业大学 | A kind of novel radio electric energy transmission omnidirectional three dimensional emission coil device |
| CN106953426B (en) * | 2017-04-21 | 2020-09-11 | 天津工业大学 | Novel wireless power transmission omnidirectional three-dimensional transmitting coil device |
| CN109755007A (en) * | 2018-12-03 | 2019-05-14 | 北京航空航天大学 | Four coil system of space and mini octopus robot |
| CN109450115A (en) * | 2018-12-29 | 2019-03-08 | 深圳蔚蓝无限科技有限公司 | The transmitting terminal of radio energy emitter and wireless charging |
| CN112865337A (en) * | 2021-01-22 | 2021-05-28 | 华中科技大学 | Multi-degree-of-freedom multi-load wireless electric energy transmission device |
| CN112865325A (en) * | 2021-01-29 | 2021-05-28 | 重庆大学 | Tripolar planar transmitting mechanism, transmission system thereof and current vector modulation method |
| CN117727542A (en) * | 2023-12-18 | 2024-03-19 | 青岛科技大学 | Butt-joint type magnetic coupling structure for underwater wireless energy transmission |
| CN117727542B (en) * | 2023-12-18 | 2024-05-07 | 青岛科技大学 | Butt-joint type magnetic coupling structure for underwater wireless energy transmission |
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Inventor after: Dai Xin Inventor after: Lin Qiuyang Inventor after: Wang Zhihui Inventor after: Tang Chunsen Inventor after: Sun Yue Inventor after: Su Yugang Inventor before: Dai Xin Inventor before: Wang Zhihui Inventor before: Tang Chunsen Inventor before: Sun Yue Inventor before: Su Yugang |
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Effective date of registration: 20210317 Address after: 400037 room 503-1423, 5th floor, unit B1, No.18, platform road, Tuzhu Town, Shapingba District, Chongqing Patentee after: Chongqing Qianwei radio power transmission Research Institute Co.,Ltd. Address before: 400026 6-1, unit 2, building 1, No. 53, Gangcheng West Road, Jiangbei District, Chongqing (room No. 608) Patentee before: Chongqing aipute Electric Co.,Ltd. Effective date of registration: 20210317 Address after: 5-2, no.66-1, shabin Road, Shapingba District, Chongqing 400030 Patentee after: Wang Zhihui Patentee after: Sun Yue Patentee after: Su Yugang Patentee after: Dai Xin Patentee after: Tang Chunsen Address before: 400044 No. 174 Shapingba street, Shapingba District, Chongqing Patentee before: Chongqing University Effective date of registration: 20210317 Address after: 400026 6-1, unit 2, building 1, No. 53, Gangcheng West Road, Jiangbei District, Chongqing (room No. 608) Patentee after: Chongqing aipute Electric Co.,Ltd. Address before: 5-2, no.66-1, shabin Road, Shapingba District, Chongqing 400030 Patentee before: Wang Zhihui Patentee before: Sun Yue Patentee before: Su Yugang Patentee before: Dai Xin Patentee before: Tang Chunsen |
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Effective date of registration: 20231009 Address after: 400026 6-1, unit 2, building 1, No. 53, Gangcheng West Road, Jiangbei District, Chongqing (room No. 608) Patentee after: Chongqing aipute Electric Co.,Ltd. Address before: 400037 room 503-1423, 5th floor, unit B1, No.18, platform road, Tuzhu Town, Shapingba District, Chongqing Patentee before: Chongqing Qianwei radio power transmission Research Institute Co.,Ltd. |