CN205622331U - Wireless delivery of energy coil system that restrain frequency splitting is offset with magnetoelectric coupling - Google Patents
Wireless delivery of energy coil system that restrain frequency splitting is offset with magnetoelectric coupling Download PDFInfo
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- CN205622331U CN205622331U CN201521077933.7U CN201521077933U CN205622331U CN 205622331 U CN205622331 U CN 205622331U CN 201521077933 U CN201521077933 U CN 201521077933U CN 205622331 U CN205622331 U CN 205622331U
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Abstract
The utility model discloses a wireless delivery of energy coil system that restrain frequency splitting is offset with magnetoelectric coupling, including an energy transmitting coil, an energy receiving coil and four loading annular metallic pieces, expand the variable range scope of power transfer between transmitting coil and the receiving coil through a load annular metallic piece and the 2nd annular metallic piece and the 3rd annular metallic piece and fourth annular metallic piece respectively. The utility model discloses a receive and the transmitting coil system, make coil work in magnetic coupling the electric coupling state, from remote removal in -process to closely, between the coil coupling coefficient change mild, thereby still can keep a lower degree of coupling not produce the frequency splitting phenomenon, the intersystem homoenergetic keeps high efficiency energy transfer. The utility model discloses introduce the electric coupling on the magnetic coupling mode basis of traditional wireless energy transmission coil system for traditional sensitive energy transmission system that adjusts the distance becomes the changeable high efficiency energy transmission system of distance.
Description
Technical field
This utility model relates to the high efficiency wireless power transmission systems technical field of distance variable, is specifically related to use magnetoelectricity
The wireless power transfer coil system of coupling counters suppression frequency splitting.
Background technology
The form that traditional electric energy transmission means is mainly connected by wire is transmitted, but wire can account for
Use substantial amounts of space resources, consume large quantities of metals resources, be easily generated contact electric spark simultaneously, give existence and life
Bring the biggest potential safety hazard；In addition, at some application occasion, it is impossible to use wire to transmit electricity, and battery
Use the most largely limit device useful life.Under these backgrounds, people begin attempt to a kind of new
Electric energy transmission technology wireless power transmission technology.
2007, the scientific research personnel of Massachusetts Polytechnics utilized magnetic resonance coupling principle first, was 2 m's in distance
In the case of lighted the bulb of 60 W completely.This technology is named as WiTricity technology, and is intermediate range distance radio energy
The development of transmission technology opens a brand-new direction.But, the shortcoming of this system is to need fixed range, when distance changes
Time, system effectiveness can significantly decline.Follow-up a lot of researchs are all based on this and are improved.In August, 2008, Intel
The Joshua R.Smith seminar of Seattle laboratory, utilizes magnetic resonance coupling wireless energy transmission technology to design can be
The plane radio energy energy-transfer device of miniaturized electronics charging, the system of displaying achieves and lights in the distance of 6 0c m
The bulb of 40 W, and delivered on Industrial Electronics Society magazine in 2011 one high-caliber
SCI paper.This system is distance variable system based on frequency-tracking, it is possible to achieve realize more than 75% at 70cm apart from interior
High-efficiency transfer.But this system needs to add frequency measurement circuit, phase-locked loop circuit in original WiTricity system
With the circuit such as voltage sample control circuit, add the complexity of system, give and realize debugging and application brings certain difficulty.
2014, at document " Lee W, Oh K, Yu J, " Distance-Insensitive Wireless Power Transfer
and Near-Field Communication Using a Current-Controlled Loop With a Loaded
Capacitance, " IEEE Transactions on Antennas & Propagation, 2014,62 (2): 936-
940. ", in, propose a kind of coil using forward and reverse coiling, in 0 to the distance of 7cm, realize the efficiency transmission of more than 60%, this
The reverse winding of class coil system limits the transmission range of system.
Utility model content
The purpose of this utility model is to overcome deficiencies of the prior art, it is proposed that one is applied to closely
Or the coil system of middle distance wireless energy transfer.In this utility model, coil-span during drawing near, endless metal
It is respectively present Capacitance Coupled between sheet, between coil, there is inductive, due to magneto-electric coupled counteracting, it is suppressed that totally couple
Coefficient becomes big trend, thus inhibits the generation of frequency splitting phenomenon, and the coefficient of coup is basically unchanged in certain distance, protects
Hold the transmission of high efficiency power；From the near to the remote during distance, the Capacitance Coupled of annular sheet metal drastically declines, the coupling between coil
Close mainly inductive, couple more weak, do not have frequency splitting phenomenon, remain in that high-efficiency transfer；This coil system
Can realize the efficient energy transmission of certain distance, dependence is the magneto-electric coupled self-adaptative adjustment between coil, and similar sets
Meter is compared, and will not increase the complexity of original Circuits System, the simplest and easy debugging of system, the most capacity coupled distance than
Relatively near, do not interfere with the transmission of remote energy equally, there is farther variable range scope.
For realizing this utility model purpose, the technical solution adopted in the utility model is as follows:
A kind of with the magneto-electric coupled wireless power transfer coil system offsetting suppression frequency splitting, launch line including an energy
Circle, an energy acceptance coil and four loading annular sheet metals；By loading respectively between transmitting coil and receiving coil
First annular sheet metal and the second annular sheet metal and the 3rd annular sheet metal and fourth annular sheet metal are expanded power and are passed
Defeated variable range scope；Owing to magnetic coupling can be offset with electric coupling opposite polarity, total stiffness of coupling is strong equal to magnetic coupling
Degree deducts piezoelectric coupling strength, between two coils when spacing diminishes, and the inductance coupling between transmitting coil and receiving coil
Close and increase, first annular sheet metal and the 3rd annular sheet metal, the electricity between the second annular sheet metal and fourth annular sheet metal
Hold coupling also to increase, owing to the anti-phase negative function of magnetic-electric coupling can make total coefficient of coup keep base in certain distance
This is constant, thus prevents the coefficient of coup excessive generation frequency splitting phenomenon from keeping the transmission of high efficiency power；When transmitting coil and connecing
When take-up circle is distant, Capacitance Coupled declines and comparatively fast becomes the least, and total stiffness of coupling depends primarily on the inductance between serpentine pipe
Coupling, progressively reduces as well as the increase of distance, does not haves frequency splitting phenomenon；Therefore this coil system can realize
Efficient energy transmission in certain distance；
Further, first annular sheet metal, the second annular sheet metal, the 3rd annular sheet metal and fourth annular sheet metal
Load mode and the feeding classification of the feeding classification of transmitting coil and receiving coil together constitute that magnetoelectricity offsets abundant
Condition；Transmitting coil clockwise about to, receiving coil counterclockwise around to, two coil winding-directions are contrary, are carried in the of transmitting coil
One annular sheet metal and transmitting coil are around on the contrary, and its end is connected with transmitting coil end by wire, is carried in transmitting line
Second annular sheet metal of circle around to contrary with transmitting coil, its end is connected with transmitting coil by wire；It is carried in and connects
3rd annular sheet metal of take-up circle and receiving coil are around on the contrary, and its end is connected with receiving coil by wire, is carried in
The fourth annular sheet metal of receiving coil around to contrary with receiving coil, its end is connected with receiving coil by wire, this
Jointly making transmitting coil and receiving coil electric field intensity each other and magnetic vector contrary, constitute that magnetoelectricity offsets must
Want condition；Further, the number of turn of transmitting coil is odd number, is the most respectively the first circle and last circle, clockwise about to,
Open a way in two ends, the middle the most separated feed mouth as altofrequency power source of circle, and the number of turn of transmitting coil is odd number, from
On be the most respectively the first circle and last circle, counterclockwise around to, opening a way in two ends, the middle the most separated conduct of circle connects
Receiving the feed mouth of energy, this mode allows the open-ended of coil so that end field effect is strengthened；
Further, the resonance manner of transmitting coil and receiving coil constitutes the primary condition that magnetoelectricity is offset；Launch line
Circle is consistent with the length of receiving coil, is the quarter-wave of operating frequency, so enables coil utilize self
Stray capacitance resonance is near operating frequency, and is equivalent to series resonance；Therefore, coil system need not additionally load resonance electricity
Hold, reduce the size of own resonance electric capacity as much as possible, and improve the mutual tolerance coefficient between coil so that it is reach and mutual inductance system
System same order, so that mutual tolerance coefficient is cancelled out each other with mutual inductance, forms magnetoelectricity and offsets characteristic；
Further, the first annular sheet metal of loading, the second annular sheet metal, the 3rd annular sheet metal, fourth annular
The width of sheet metal determines the transmission range scope of expansion；Coupling electric capacity between transmitting coil and receiving coil is mainly by loading
First annular sheet metal and the 3rd annular sheet metal, and the second annular sheet metal and fourth annular sheet metal between electric capacity
In series；Be enough to offset coupling inductance energy to make the coupling electric capacity between coil maximize, annular sheet metal width keeps
Unanimously, and by adjusting this width, the size of mutual tolerance coefficient between coil can be adjusted, and then directly adjust electric coupling to magnetic coupling
The degree of the counteracting closed, owing to overall coupling deducts electric coupling equal to magnetic coupling, final so that the overall coefficient of coup is with distance
Change is mild and has expanded variable range scope；
Further, the first annular sheet metal of loading, the second annular sheet metal and transmitting coil are mutually chimeric and the
Three annular sheet metals, fourth annular sheet metal and receiving coil are the most chimeric, will not increase considerably the volume of original coil；Send out
Penetrating coil aperture two ends and load first annular sheet metal and the second annular sheet metal respectively, two annular sheet metals are all last with coil
One circle same plane, the semi-circular shape of respectively 180 degree, internal diameter is more bigger than coil, is as the criterion not contacting coil, and internal diameter is outside
Expand the annular sheet metal forming one fixed width；First annular sheet metal and the spaced segment distance of the second annular sheet metal,
Head and the tail are not attached to；So load mode, will not increase the thickness of transmitting coil, and at transmitting coil is the most also
Add the width of sheet metal, and actually this width is compared with coil radius the least；Therefore, the mode of metal-loaded sheet itself is not
Can the most significantly increase winding volume；Receiving coil opening two ends load first annular sheet metal and the second endless metal respectively
Sheet, two annular sheet metals all with last circle same plane of coil, the semi-circular shape of respectively 180 degree, internal diameter is more bigger than coil,
It is as the criterion not contacting coil, and internal diameter outwards expands the annular sheet metal forming one fixed width；3rd annular sheet metal Fourth Ring
The spaced segment distance of shape sheet metal, head and the tail are not attached to；So load mode, will not increase the thickness of receiving coil, and
The most also the width only increasing sheet metal of receiving coil, and actually this width is compared very with coil radius
Little；Therefore, the mode of metal-loaded sheet itself will not the most significantly increase winding volume.
Compared with prior art, this utility model has the advantage that
(1) wireless power transmission coil system of the present utility model can be according to the coupling between transmission range self-adaptative adjustment coil
Degree keeps high efficiency, it is not necessary to increasing extra control circuit, the most also will not increase system cost, meanwhile, system is the most more
For being simply easy to debugging and application.
(2) this utility model is only loaded with one section of less annular sheet metal of width around coil, in distance change
Keep high efficiency and also ensure that volume will not increase considerably simultaneously, make coil be easier to real system and embed mutually.
Accompanying drawing explanation
Fig. 1 is a kind of magneto-electric coupled wireless power transfer coil system structure offsetting suppression frequency splitting of this utility model
Figure.
Fig. 2 is a kind of size marking figure with the magneto-electric coupled wireless power transfer coil system offsetting suppression frequency splitting.
Fig. 3 is the coil system efficiency of transmission simulation result with distance change.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, this utility model is described in further detail, but reality of the present utility model
The mode of executing is not limited to this.
As it is shown in figure 1, a kind of with the magneto-electric coupled wireless power transfer coil system offsetting suppression frequency splitting, connect including two
Receive and transmitting coil and loading annular sheet metal；Two coils are around to the most symmetrical, and the distance between coil is wireless
Transmission of electricity transmission range；Transmitting coil 3 opening two ends load first annular sheet metal 1 and the second annular sheet metal 2, two annulars respectively
Sheet metal all with last circle same plane of coil, the semi-circular shape of respectively 180 degree, internal diameter is more bigger than coil, not contact
Coil is as the criterion, and internal diameter outwards expands the annular sheet metal forming one fixed width；First annular sheet metal 1 and the second endless metal
The spaced segment distance of sheet 2, head and the tail are not attached to；So load mode, will not increase the thickness of transmitting coil, and launch line
The most also the width only increasing sheet metal of circle, and actually this width is compared the least with coil radius；Therefore, add
The mode itself carrying sheet metal will not the most significantly increase winding volume；Receiving coil 10 opening two ends load first annular respectively
Sheet metal 6 and the second annular sheet metal 7, two annular sheet metals all with last circle same plane of coil, the half of respectively 180 degree
Annular, internal diameter is more bigger than coil, is as the criterion not contacting coil, and internal diameter outwards expands the endless metal forming one fixed width
Sheet；3rd annular sheet metal 6 and the spaced segment distance of fourth annular sheet metal 7, head and the tail are not attached to；Draw near process
In, first annular sheet metal 1 and the 3rd annular sheet metal 3, between the second annular sheet metal 2 and fourth annular sheet metal 4 respectively
There is Capacitance Coupled, between transmitting coil 3 and receiving coil 10, there is inductive, due to magneto-electric coupled counteracting, Ke Yi
Keep the coefficient of coup to be basically unchanged in certain distance, keep the transmission of high efficiency power；Inductance between remote mainly coil
Coupling, couples more weak, does not haves frequency splitting, remain in that high-efficiency transfer；Therefore this coil system can realize necessarily
Efficient energy transmission in Ju Li.
Embodiment
A kind of structure with the magneto-electric coupled wireless power transfer coil system offsetting suppression frequency splitting is as it is shown in figure 1, relevant
Size is as in figure 2 it is shown, the thickness of selected sheet metal is 2mm, and coil-span is from for dis, and physical circuit size Selection is as follows:
Coil diameter d=185mm, sheet metal width a=25mm, coil thickness c=30mm, coil copper wire diameter r=2mm, overall dimensions is
235 mm×235 mm。
Fig. 3 is coil system efficiency of transmission with the simulation result of distance change, it can be seen that coil originally only from 8 to
Having the efficiency of more than 80%, variable range scope to only have 6cm in 14cm, time close, efficiency drastically declines.And the coil after improving exists
0 to 10cm all has the efficiency of transmission higher than 80% apart from interior, and variable range scope has 10cm.This utility model provides a kind of answering
It is used in closely or middle-range is launched and receiving coil design from the wireless energy transfer system of distance variable, keeping high efficiency
While, too increase transmission range.
Embodiments described above is an embodiment taught in this utility model, not in order to limit this practicality
Novel.Based on embodiment of the present utility model, those of ordinary skill in the art on the premise of not making creative work, base
In any amendment that this utility model is made, equivalent, improve other embodiments obtained, broadly fall into this utility model real
Execute the protection domain of example.
Claims (5)
1. with the magneto-electric coupled wireless power transfer coil system offsetting suppression frequency splitting, including an energy transmitting coil,
One energy acceptance coil and four loading annular sheet metals；It is characterized in that: transmitting coil (3) and receiving coil (10) it
Between by loading first annular sheet metal (1) and the second annular sheet metal (2) and the 3rd annular sheet metal (6) and the 4th respectively
Annular sheet metal (7) expands the variable range scope of power transmission；Owing to magnetic coupling can be offset with electric coupling opposite polarity,
Total stiffness of coupling deducts piezoelectric coupling strength equal to coupling strength, between two coils when spacing diminishes, launches line
Inductive between circle (3) and receiving coil (10) increases, first annular sheet metal (1) and the 3rd annular sheet metal (6), the
Capacitance Coupled between second ring sheet metal (2) and fourth annular sheet metal (7) also increases, thus prevents the excessive product of the coefficient of coup
Raw frequency splitting phenomenon keeps the transmission of high efficiency power；When transmitting coil (3) and receiving coil (10) are distant, electric capacity coupling
Closing to decline and comparatively fast become the least, total stiffness of coupling depends primarily on the inductive between serpentine pipe, as well as the increase of distance
And progressively reduce, do not have frequency splitting phenomenon.
A kind of wireless power transfer coil system with magneto-electric coupled counteracting suppression frequency splitting the most according to claim 1, its
It is characterised by: transmitting coil (3) and the winding of receiving coil (10), first annular sheet metal (1), the second annular sheet metal (2),
3rd annular sheet metal (6) and the feeding classification (I/P) of the load mode of fourth annular sheet metal (7) and transmitting coil (3)
The sufficient condition that magnetoelectricity is offset is together constituted with the feeding classification (O/P) of receiving coil (10)；Transmitting coil (3) clockwise about
To, receiving coil (10) counterclockwise around to, two coil winding-directions are contrary, are carried in the first annular sheet metal (1) of transmitting coil (3)
With transmitting coil (3) around on the contrary, its end is connected with transmitting coil end by wire (5), is carried in transmitting coil (3)
Second annular sheet metal (2) around to contrary with transmitting coil (3), its end is connected with transmitting coil (3) by wire (4)；
Being carried in the 3rd annular sheet metal (6) of receiving coil (10) and receiving coil (10) around on the contrary, its end passes through wire (9)
Be connected with receiving coil (10), be carried in receiving coil (10) fourth annular sheet metal (7) around to receiving coil (10)
On the contrary, its end is connected with receiving coil (10) by wire (8), and this makes transmitting coil (3) and receiving coil (10) jointly
Electric field intensity and magnetic vector each other are contrary, constitute the essential condition that magnetoelectricity is offset；Further, transmitting coil (3)
The number of turn is odd number, the most respectively first circle and last circle, clockwise about to, opening a way in two ends, a middle circle is therefrom
The separated feed mouth (I/P) as altofrequency power source, the number of turn of transmitting coil (10) is odd number, the most respectively
One circle and last circle, counterclockwise around to, open a way in two ends, the middle the most separated feed mouth as reception energy of circle
(O/P).
A kind of wireless power transfer coil system with magneto-electric coupled counteracting suppression frequency splitting the most according to claim 1, its
It is characterised by: the resonance manner of transmitting coil (3) and receiving coil (10) constitutes the primary condition that magnetoelectricity is offset；Transmitting coil
(3) length with receiving coil (10) is consistent, is the quarter-wave of operating frequency.
A kind of wireless power transfer coil system with magneto-electric coupled counteracting suppression frequency splitting the most according to claim 1, its
It is characterised by: the first annular sheet metal (1) of loading, the second annular sheet metal (2), the 3rd annular sheet metal (6), fourth annular
The width of sheet metal (7) determines the transmission range scope of expansion；Coupling electric capacity between transmitting coil (3) and receiving coil (10)
Main by the first annular sheet metal (1) loaded and the 3rd annular sheet metal (6), and the second annular sheet metal (2) and the 4th
Capacitances in series between annular sheet metal (7) is constituted；Each annular sheet metal width keeps consistent, and by adjusting this width,
Adjust the size of mutual tolerance coefficient between coil, and then directly adjust the electric coupling degree to magnetic-coupled counteracting, due to overall coupling
Electric coupling is deducted equal to magnetic coupling, final so that the overall coefficient of coup has expanded variable range model gently with distance change
Enclose.
A kind of wireless power transfer coil system with magneto-electric coupled counteracting suppression frequency splitting the most according to claim 1, its
It is characterised by: the first annular sheet metal (1) of loading, the second annular sheet metal (2) and transmitting coil (3) are mutually chimeric and the
Three annular sheet metals (6), fourth annular sheet metal (7) and receiving coil (10) are the most chimeric, will not increase considerably original line
The volume of circle；Transmitting coil (3) opening two ends load first annular sheet metal (1) and the second annular sheet metal (2), two rings respectively
Shape sheet metal all with last circle same plane of coil, the semi-circular shape of respectively 180 degree, internal diameter is bigger than coil, make annular gold
Belong to sheet and do not contact coil；First annular sheet metal (1) and the second annular sheet metal (2) are spaced from each other, and head and the tail are not attached to；Receive
Coil (10) opening two ends load first annular sheet metal (6) and the second annular sheet metal (7) respectively, two annular sheet metals all with
Last circle same plane of coil, the semi-circular shape of respectively 180 degree, internal diameter is bigger than coil, and two annular sheet metals do not contact line
Circle；3rd annular sheet metal (6) fourth annular sheet metal (7) is spaced from each other, and head and the tail are not attached to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521077933.7U CN205622331U (en) | 2015-12-20 | 2015-12-20 | Wireless delivery of energy coil system that restrain frequency splitting is offset with magnetoelectric coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521077933.7U CN205622331U (en) | 2015-12-20 | 2015-12-20 | Wireless delivery of energy coil system that restrain frequency splitting is offset with magnetoelectric coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622331U true CN205622331U (en) | 2016-10-05 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521077933.7U Withdrawn - After Issue CN205622331U (en) | 2015-12-20 | 2015-12-20 | Wireless delivery of energy coil system that restrain frequency splitting is offset with magnetoelectric coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205622331U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871074A (en) * | 2015-12-20 | 2016-08-17 | 华南理工大学 | Wireless energy transmission coil system for counteracting and restraining frequency splitting by magnetoelectric coupling |
| CN106961161A (en) * | 2017-04-13 | 2017-07-18 | 华为机器有限公司 | A kind of reception device, Electromagnetic Coupling System and wireless power transmission circuit |
-
2015
- 2015-12-20 CN CN201521077933.7U patent/CN205622331U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871074A (en) * | 2015-12-20 | 2016-08-17 | 华南理工大学 | Wireless energy transmission coil system for counteracting and restraining frequency splitting by magnetoelectric coupling |
| CN105871074B (en) * | 2015-12-20 | 2020-04-28 | 华南理工大学 | Wireless energy transmission coil system for counteracting and inhibiting frequency splitting through magnetoelectric coupling |
| CN106961161A (en) * | 2017-04-13 | 2017-07-18 | 华为机器有限公司 | A kind of reception device, Electromagnetic Coupling System and wireless power transmission circuit |
| CN106961161B (en) * | 2017-04-13 | 2019-09-20 | 华为机器有限公司 | A kind of reception device, Electromagnetic Coupling System and wireless power transmission circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161005 Effective date of abandoning: 20200428 |
|
| AV01 | Patent right actively abandoned |