CN106952710A - A kind of wireless charging magnetic coupling arrangement and its circuit for multi-load - Google Patents
A kind of wireless charging magnetic coupling arrangement and its circuit for multi-load Download PDFInfo
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- CN106952710A CN106952710A CN201710333353.7A CN201710333353A CN106952710A CN 106952710 A CN106952710 A CN 106952710A CN 201710333353 A CN201710333353 A CN 201710333353A CN 106952710 A CN106952710 A CN 106952710A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
- H01F2027/2809—Printed windings on stacked layers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of wireless charging magnetic coupling arrangement for multi-load, including transmitting coil and some receiving coils, the receiving coil is matrix pattern quadrature coil or double king's structure quadrature coils；Transmitting coil is made up of some wire races being parallel to each other, and the sense of current is opposite in arbitrary neighborhood wire race；Matrix pattern quadrature coil includes orthogonal first magnetic core and the second magnetic core, the end of first magnetic core and the second magnetic core is respectively arranged with the 3rd magnetic core normal thereto, the first magnetic core, be respectively arranged with the first winding, the second winding, the tertiary winding on the second magnetic core and on the outside of four the 3rd magnetic cores；Double king's structure quadrature coils have carried out secondary extension extension in the end of orthogonal first magnetic core and the second magnetic core；The invention further relates to circuit.The present invention can realize that receiving coil effectively evenly receives magnetic field energy in the range of transmitting coil, the electric energy efficiency of transmission with the higher coefficient of coup and Geng Gao.
Description
Technical field
The present invention relates to a kind of wireless charging magnetic coupling arrangement and its circuit for multi-load.
Background technology
That wireless power transmission technology has is convenient, without mechanical loss, without characteristics such as electric sparks, in a variety of particular surroundings such as people
Internal portion, mine, high voltage environment, under water, the field such as electric automobile there is applications well prospect, obtain in recent years academia and
The extensive concern of business circles.
The magnetic coupling arrangement of current wireless power transmission technology mainly uses planar spiral coil, traditional magnetic coupling knot
In structure, generally using single transmitting lateral coil and reception lateral coil.The magnetic field of single transmitting coil transmitting is fixed, and
Single receiving coil can only receive the magnetic field of a certain specific direction again, if the magnetic direction that transmitting coil is launched is with receiving line
Enclose the magnetic direction that can receive it is inconsistent when, then receiving coil can only receiving portion magnetic field energy, this is also resulted in
The reduction of the coefficient of coup of magnetic coupling arrangement.Mainly there are following several magnetic coupling arrangement designs at present：
1. two coupling coils are just to scheme and its derivative
Typically there is the patent of Ningbo Wei E Electronic Science and Technology Co., Ltd.s《A kind of transmitting coil structure of high quality factor》（Application
Number：201520036919.6）And《A kind of electric energy receives structure and radio energy receiver module》（Application number：
201521018507.6）；But in the technical scheme, the relative position just to transmitting lateral coil and reception lateral coil is relatively solid
Fixed, it is necessary to assure do not misplaced in both vertical direction, plane must be parallel where two coils, if there is certain angle,
The coefficient of coup declines quickly, place, and which limit the convenience that wireless charging device is used.
2. multiple coil stacked arrangements are used as emitting side coil version
Typically there is the patent of oceangoing voyage Science and Technology Ltd. in Shenzhen《A kind of wireless charging device》（Application number
201310156410.0）, as shown in figure 4, and City University of Hong Kong patent " be used for improve planar inductive charging platform
Can "（Application number 200680030162.3）；But in the technical scheme, array emitter coil can realize the certain free degree of plane
Wireless charging, but its transmitting coil winding path is long, and conductor resistance is big, and winding loss is larger, and cost is improved.
3. isosceles triangle distribution coil is launched, cross quadrature coil reception scheme
Typically there is the patent of University of Fuzhou《A kind of wireless power transmission magnetic coupling arrangement and its circuit》（Application number
201210463307.6）；But in the technical scheme, for transmitting coil, winding path is long, and there are more right angle, wire electricity
Resistance is big so that overall winding loss increase.For receiving coil, z-axis direction receives winding coupled poor performance, and cost is carried
It is high.
4. magnetic field tracking servo structure
Typically have University Of Chongqing wears glad etc. patent《A kind of magnetic field tracking servo mechanism control and its control method》
（Application number：201010572170.9）；But, it is necessary to be additionally provided magnetic field tracking servo-drive system in the technical scheme, and exist
The problem of mechanical life, it is frequently used in some specific occasions.
5. plane magnetic resonators and the plane magnetic resonators with toroidal cavity resonator coil
Typically there is United States radio power company（WiTricity ）Patent《Wireless power transmission in the vehicles》（Shen
Please number：201480027153.3）；But in the technical scheme, for receiving coil one, winding turns length is long, winding loss
It is big and cost is higher, for receiving coil two, although winding turns length is reduced, and add the annular for receiving z-axis direction magnetic field
Winding, but if it is intended to reduction x, y-axis direction receives winding turns length and guides magnetic core outermost sectional area it is necessary to reduce, can lead
Cause magnetic resistance excessive, collect x, the ability in the magnetic field that y directions are passed over is substantially not enough, x, the coefficient of coup in y directions is not high, this is
Conflict.
The content of the invention
In view of this, it is an object of the invention to provide a kind of wireless charging magnetic coupling arrangement and its electricity for multi-load
Road, can realize that receiving coil effectively evenly receives magnetic field energy in the range of transmitting coil, with the higher coefficient of coup
Higher electric energy efficiency of transmission.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of wireless charging magnetic coupling arrangement for multi-load, it is characterised in that：Including transmitting coil and with the emission lines
Some receiving coils of coupling are enclosed, the receiving coil is matrix pattern quadrature coil or double king's structure quadrature coils；
The transmitting coil is made up of some wire races being parallel to each other, and the sense of current is consistent in same wire race, arbitrary neighborhood
The sense of current is opposite in wire race；
The matrix pattern quadrature coil includes orthogonal first magnetic core and the second magnetic core, first magnetic core and the second magnetic core
End be respectively arranged with the 3rd magnetic core normal thereto, the first magnetic core and be provided with the first winding, be provided with the second magnetic core
Second winding, the outside bag of four the 3rd magnetic cores is provided with the tertiary winding, and the first winding, the second winding, the tertiary winding are vertical two-by-two；
Described pair of king's structure quadrature coil includes orthogonal first magnetic core and the second magnetic core, first magnetic core and the second magnetic
The end of core, which is respectively arranged with the 3rd magnetic core normal thereto, the first magnetic core, is provided with the first winding, is set on the second magnetic core
There is the second winding；It is provided with the 4th magnetic core on the outside of 3rd magnetic core of the first magnetic core wherein one end, the 3rd magnetic core both sides are along the
The tertiary winding is provided with one magnetic core direction；The 4th magnetic core is provided with the outside of 3rd magnetic core of the second magnetic core wherein one end, this
Three magnetic core both sides are provided with the 4th winding along on the second magnetic core direction.
Further, the transmitting coil is that Multi-layer Parallel or interlayer are connected.
Further, the corner of the transmitting coil is right angle, obtuse angle or fillet.
Further, the bottom side of the transmitting coil is provided with magnetic core or magnet.
Further, in the matrix pattern quadrature coil, the 3rd magnetic core and the first magnetic core, the second magnetic core are in same plane
Or the 3rd magnetic core less than the first magnetic core, the second magnetic core set.
Further, in the matrix pattern quadrature coil, the tertiary winding is rectangle winding or circular winding.
Further, in described pair of king's structure quadrature coil, the length of the 4th magnetic core is more than or equal to the 3rd magnetic core.
A kind of circuit of wireless charging magnetic coupling arrangement for multi-load, it is characterised in that：Including nothing as described above
Line charging magnetic coupling arrangement, power network, circuit of power factor correction, inverter circuit, primary side compensation network are sequentially connected, primary side compensation
The output end of network is connected with the transmitting coil of the wireless charging magnetic coupling arrangement；The wireless charging magnetic coupling arrangement it is every
One receiving coil compensates network connection with a secondary respectively, and each secondary compensation network is connected with a current rectifying and wave filtering circuit respectively,
Each current rectifying and wave filtering circuit is connected with a load respectively.
The present invention has the advantages that compared with prior art：The present invention includes current-return-type transmitting coil and excellent
The three-dimensional orthogonal receiving coil of change, can realize that receiving terminal effectively evenly receives magnetic field energy in the range of transmitting coil, tool
There are the higher coefficient of coup and Geng Gao electric energy efficiency of transmission, occur the skew of relative position in receiving side and emitting side magnetic structure
Or certain lift-off（The distance between emitting side and receiving side magnetic structure）When, enough coefficients of coup are also can guarantee that, in hair
Penetrating side and the unfixed occasion of receiving side magnetic structure relative position has obvious advantage.Low EMI, structure be relatively easy,
It is easily achieved, the wireless power transmission of various power occasions is all suitable for, therefore can be used for transmitting high-power power.
Brief description of the drawings
Figure 1A is the transmitting coil current direction schematic diagram of one embodiment of the invention.
Figure 1B is the transmitting coil PCB winding cross-section schematic diagrames of one embodiment of the invention.
Fig. 1 C are the transmitting coil copper cash winding cross-section schematic diagrames of one embodiment of the invention.
Fig. 1 D are the transmitting coil litz line winding cross-sectional views of one embodiment of the invention.
Fig. 2 is the Distribution of Magnetic Field figure of existing snail type coil.
Fig. 3 is the Distribution of Magnetic Field figure of the transmitting coil of the present invention.
Fig. 4 A are the transmitting coils that one embodiment of the invention corner is right angle.
Fig. 4 B are the transmitting coils that one embodiment of the invention corner is obtuse angle.
Fig. 4 C are the transmitting coils that one embodiment of the invention corner is fillet.
Fig. 5 is the transmitting coil of the Multi-layer Parallel of one embodiment of the invention.
Fig. 6 is the transmitting coil of the interlayer series connection of one embodiment of the invention.
Fig. 7 A are that the double-deck PCB of one embodiment of the invention turns back the multiturn transmitting coil top layer of winding.
Fig. 7 B are that the double-deck PCB of one embodiment of the invention turns back the multiturn transmitting coil bottom of winding.
Fig. 7 C are that the double-deck PCB of one embodiment of the invention turns back the multiturn transmitting coil of winding.
Fig. 8 A are the matrix pattern quadrature coils of the embodiment of the present invention one.
Fig. 8 B are the matrix pattern quadrature coils of the embodiment of the present invention two.
Fig. 8 C are the matrix pattern quadrature coils of the embodiment of the present invention three.
Fig. 9 A are the structural representations of position 1 of the present invention.
Fig. 9 B are Fig. 9 A corresponding magnetic circuit figures.
Fig. 9 C are the structural representations of position 2 of the present invention.
Fig. 9 D are Fig. 9 C corresponding magnetic circuit figures.
Fig. 9 E are the position views that Fig. 9 A rotate counterclockwise 45 °.
Fig. 9 F are the position views that Fig. 9 A rotate counterclockwise 90 °.
Figure 10 is double king's structure quadrature coils of one embodiment of the invention.
Figure 11 A are the transmitting coil spliced maps of one embodiment of the invention.
Figure 11 B are the transmitting coil spliced maps of another embodiment of the present invention.
Figure 12 is the multi-load circuit of one embodiment of the invention.
Figure 13 is the overall structure diagram of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
The present embodiment provides a kind of wireless charging magnetic coupling coil, it is characterised in that：Including a transmitting coil and with it is described
Some receiving coils of transmitting coil coupling, the receiving coil is matrix pattern quadrature coil or double king's structure quadrature coils；
In the present embodiment, the transmitting coil is current-return-type planar rectangular coil, by some conducting line segments being parallel to each other
（Or wire race）Composition, arbitrary neighborhood conducting line segment（Or wire race）The sense of current is on the contrary, the sense of current is identical in each wire race；Such as
Figure 1A show the current direction schematic diagram of the transmitting coil, and 1101 represent that the vertical paper of electric current in conductor is flowed into, 1102 tables
Show the vertical paper outflow of electric current in conductor, the electric current flowing formed it into is distributed to be formed between adjacent wires in opposite electric current
Flow direction, transmitting coil constitutes an emission of magnetic field plane, and its magnetic field radiated can be controlled within the specific limits, figure
1301,1302 in 1B represent adjacent Liang Ge wires race, using PCB windings, and 1303,1304 in Fig. 1 C represent adjacent two
Individual wire race, represents adjacent Liang Ge wires race, using Litz line windings using copper cash winding, 1305,1306 in Fig. 1 D.
In the present embodiment, there are the high-permeability materials such as magnetic core or magnet the transmitting coil bottom side, and increase magnetic core can
Magnetic coupling is improved, magnetic field exposure is reduced.It can increase sheet metal on the downside of magnetic field exposure, magnetic core to further reduce.
The transmitting coil can be, but not limited to as plain conductor, and can be, but not limited to copper cash includes tinned wird, silver-plated
Copper cash or Litz lines etc..
Please comparison diagram 2 and Fig. 3, in figure, 1201 and 1211 represent the magnetic lines of force, and 1202 and 1212 represent windings（Carry above
The conducting line segment arrived（Or wire race））, 1203 and 1213 represent magnetic core, it can be seen that the magnetic field exposure of the transmitting coil of the present embodiment
Relatively small, magnetic field is concentrated mainly in transmitting coil platform surface certain limit, and the transmitting coil structure of the present embodiment has
The less advantage of leakage magnetic field.
In above-described embodiment, the corner of the transmitting coil can be, but not limited to right angle, obtuse angle, fillet etc., please divide
Other reference picture 4A, Fig. 4 B and Fig. 4 C, wherein, 1402,1412,1422 be winding, and 1401,1411,1421 be current input terminal,
1403rd, 1413,1423 be current output terminal.With in another embodiment, in order to increase the conductive cross-sectional area of winding, reducing winding and damaging
Consumption, transmitting coil can use the set-up mode of Multi-layer Parallel, i.e., described transmitting coil can also be lattice coil, and corner
Right angle, obtuse angle, fillet etc. are can be, but not limited to, by taking the lattice coil of fillet as an example, Fig. 5 is refer to, its current path is specific such as
Under：Top layer current path：Electric current is flowed into through terminal 1601, flows through PCB top layers winding 1602, is most flowed out afterwards through 1603 terminals;It is logical
Hole 1601,1604,1607 is just right, and through hole 1603,1606,1609 is just right；Middle level current path:Electric current is flowed into through terminal 1601,
Into with top layer through hole 1601 just to middle level through hole 1604, flow through PCB middle levels winding 1605, from middle level through hole 1606, enter
With middle level through hole 1606 just to top layer through hole 1603, most flowed out afterwards through terminal 1603;Bottom current path：Electric current is through terminal
1601 flow into, by way of middle level through hole 1604, into top layer through hole 1601 just to bottom through hole 1607, flow through PCB bottoms around
Group 1608, from bottom through hole 1609, by way of middle level through hole 1606, into bottom through hole 1609 just to top layer through hole 1603,
Most flowed out afterwards through terminal 1603.
In another embodiment, in order to improve primary side transmitting magnetic field intensity, what transmitting coil can also be connected using interlayer
Set-up mode, refer to Fig. 6, and still by taking fillet as an example, its current path is specific as follows：Electric current is flowed into through terminal 1701, stream
Through PCB top layers winding 1702, from top layer through hole 1703, into top layer through hole 1703 just to bottom through hole 1704, pass through
PCB bottoms winding 1705, most flows out through 1706 terminals afterwards.
In another embodiment, transmitting coil can be turned back winding using bilayer（Top layer containing PCB and PCB bottoms）, to increase
Plus the transmitting coil number of turn, remained unchanged so as to improve primary side transmitting magnetic field intensity by taking fillet as an example, refer to Fig. 7 A, 7B, 7C, its electricity
Flow path is specific as follows：Electric current is flowed into through terminal 1801, flows through PCB top layers winding 1802, from top layer through hole 1803, into top
Layer through hole 1803 just to bottom through hole 1804, PCB bottoms winding 1805 is flowed through, from bottom through hole 1806, into logical with bottom
Hole 1806 just to top layer through hole 1807, flow through PCB top layers winding 1808, from top layer through hole 1809, into top layer through hole
1809 just to bottom through hole 1810, flow through PCB bottoms winding 1811, from bottom through hole 1812, into bottom through hole 1812
Just to top layer through hole 1813, PCB top layers winding 1814 is flowed through, from top layer through hole 1815, into just right with top layer through hole 1815
Bottom through hole 1816, flow through PCB bottoms winding 1817, most flowed out afterwards through terminal 1818.
Fig. 8 A are refer to, the matrix pattern quadrature coil includes the orthogonal magnetic core of first magnetic core 2004 and second
2005, the end of the magnetic core 2005 of the first magnetic core 2004 and second be respectively arranged with the 3rd magnetic core 2006 normal thereto,
2007th, 2008 and 2009,2005 are provided with the first winding 2002, the second magnetic core on the first magnetic core 2004 and is provided with the second winding
2001, the outside bags of four the 3rd magnetic cores 2006,2007,2008 and 2009 is provided with the tertiary winding 2003, the first winding 2002, the
Two windings 2001, the tertiary winding 2003 are vertical two-by-two, and in the present embodiment, the 3rd magnetic core 2006,2007,2008 and 2009 is less than
Contacted with each other between first magnetic core and the second magnetic core and three；During the length of first magnetic core and the second magnetic core is about adjacent wires race
1 times of distance of point, 1 times of the 3rd magnetic core distance about distance at adjacent wires race midpoint being parallel to each other, three it is orthogonal around
Do not coupled between group, be respectively induced the magnetic-field component of three orthogonal directions, this receiving side quadrature coil structure can not only fill
Divide the magnetic-field component of sensing all directions, and the addition of all directions coefficient of coup can make the overall coefficient of coup relatively flat
It is even, it can be maintained in certain scope, improve overall coupling performance.The magnetic core outermost of 3rd magnetic core increase guiding magnetic field energy
Sectional area, reduces magnetic resistance as far as possible, collects the magnetic field that transmitting coil is passed over.
It is the matrix pattern quadrature coil of another embodiment as shown in Figure 8 B, compared with Fig. 8 A illustrated embodiments, difference
It is that the 3rd magnetic core 2016,2017,2018 and 2019 and the first magnetic core 2014 and the second magnetic core 2015 are in same plane,
In Fig. 8 A and Fig. 8 B illustrated embodiments, the tertiary winding is rectangle.
It is the matrix pattern quadrature coil of another embodiment as shown in Figure 8 C, compared with Fig. 8 B illustrated embodiments, difference
It is that the tertiary winding 2023 is circle, corresponding 3rd magnetic core 2024 is circular arc with matching.
Above three kinds of structures are all matrix pattern structures, if with above-mentioned current-return-type planar rectangular transmitting coil
It is engaged, when receiving coil is moved horizontally on the direction perpendicular with current direction, i.e. Fig. 9 A and the X side shown in Fig. 9 C
Peak-to-valley value is presented to, magnetic field distribution, in position shown in Fig. 9 A, just for one-in-and-one-out two parts wire in the middle of, have one
Partial magnetic field cancels each other, and valley is presented；Peak value is then presented in position shown in Fig. 9 C.If there was only one group of line in one direction
Circle, then peak-to-valley value is presented in the inevitable horizontal displacements with X-direction of voltage V1 that winding 1 is sensed, is at this time accomplished by the party
Winding 2 is introduced to each again, and second correspondingly is carried out to end and is extended, double king's structure cross lines as shown in Figure 10 are formed
Circle.
Figure 10 is refer to, described pair of king's structure quadrature coil includes the orthogonal magnetic core of first magnetic core 2035 and second
2036, the end of the magnetic core 2035 of the first magnetic core 2035 and second be respectively arranged with the 3rd magnetic core 2037 normal thereto,
2038th, 2039 and 2040, it is provided with the first winding 2033, the second magnetic core 2036 on the first magnetic core 2035 and is provided with the second winding
2031；The outside of 3rd magnetic core 2039 of the first magnetic core 2035 wherein one end is provided with the 4th magnetic core 2042, the He of the 3rd magnetic core 2039
4th magnetic core 2042 is linked together by the extension of the first magnetic core 2035, and the both sides of the 3rd magnetic core 2039 are along the first magnetic core
The tertiary winding 2034 is provided with 2035 directions；The outside of 3rd magnetic core 2038 of the second magnetic core 2036 wherein one end is provided with the 4th
Magnetic core 2041, the 3rd magnetic core 2038 and the 4th magnetic core 2041 are linked together by the extension of the second magnetic core 2036, and the 3rd
The both sides of magnetic core 2038 are provided with the 4th winding 2032 along on the direction of the second magnetic core 2036；The length of first magnetic core and the second magnetic core
About 1.5 times of the distance at adjacent wires race midpoint, the 3rd magnetic core distance about adjacent wires race midpoint being parallel to each other away from
From 1 times, 0.5 times of the 4th magnetic core and the 3rd magnetic core distance about distance at adjacent wires race midpoint with one end.
The schematic diagram of position 1 as shown in Figure 9 A, corresponds to magnetic circuit as shown in Figure 9 B, and the schematic diagram of position 2 as shown in Figure 9 C, corresponds to magnetic
As shown in fig. 9d, in figure, 2101,2111,2121,2131 represent that the actual sign of a circle transmitting coil is more in transmitting coil, figure on road
Circle, 2102,2112,2122,2132 represent receiving coil, and hollow arrow 2103,2113,2123,2133 represents the sense of current, first
The arrow 2114,2134 that tail connects represents magnetic line of force trend, during in position 2, the voltage V1 of the one of winding sensing in x directions
During in valley, the voltage V2 of another winding sensing in x directions is in peak value, and the voltage V2 of the two winding sensings in x directions is entered
Row superposition, the kurtosis of the total voltage induced on x directions will weaken a lot, tend to be flat, and new receiving coil can be
Any position translation rotation and holding reception energy maintenance stabilization on transmitting coil platform.
The receiving coil can be rotated freely in x/y plane, can receive magnetic field, using double king's structure quadrature coils as
Example, as shown in Fig. 9 E and Fig. 9 F, Fig. 9 E are represented relative to the position 1 shown in Fig. 9 A, in 45 degree of x/y plane rotate counterclockwise, Fig. 9 F
Represent relative to the position 1 shown in Fig. 9 A, in 90 degree of x/y plane rotate counterclockwise.
In the present embodiment, in described pair of king's structure quadrature coil, the length of the 4th magnetic core is more than or equal to the 3rd magnetic core,
And the size of induced voltage can be changed by a, c, e in the size such as Figure 10 of the 3rd magnetic core of change and the 4th magnetic core, lead to
The number of turn of two windings in same direction is crossed so that total induced voltage tends to be steady, two groups of windings are tried one's best the more magnetic force of interlinkage
Line.
The transmitting coil can arbitrarily splice, be expanded to the plane of departure, while field homogeneity can be kept, can use
Series connection splicing or splicing in parallel.Series connection joining method shown in Figure 11 A can infinitely splice, extend to the left and right sides, shown in Figure 11 B
Joining method in parallel can also infinitely splice, extend to the left and right sides.
The overall structure diagram of the present embodiment is as shown in figure 13.Wherein, 2201 be transmitting coil, 2202,2203,2204
For receiving coil.
Figure 12 is refer to, the present embodiment also provides a kind of circuit of the wireless charging magnetic coupling arrangement for multi-load, its
It is characterised by：Including wireless charging magnetic coupling arrangement, power network, circuit of power factor correction, inverter circuit, primary side compensation network according to
Secondary connection, the output end of primary side compensation network is connected with the transmitting coil of the wireless charging magnetic coupling arrangement；The wireless charging
Each receiving coil of electromagnetic coupling structure compensates network connection with a secondary respectively, and each secondary compensation network is whole with one respectively
Filter circuit connection is flowed, each current rectifying and wave filtering circuit is connected with a load respectively, load can be next stage DC/DC topology such as hand
Machine battery charging topology, or be directly resistive load or LED load.
Multicircuit advantage that this is used for the wireless charging magnetic coupling arrangement of multi-load is as follows：
1st, multi-load wireless power transmission is realized, is applicable in various power occasions, with the higher coefficient of coup and Geng Gao
Electric energy efficiency of transmission；
2nd, occur the skew or certain lift-off of relative position in receiving side and emitting side magnetic structure（Emitting side and receiving side magnetic knot
The distance between structure）When, enough coefficients of coup are also can guarantee that, are not fixed with receiving side magnetic structure relative position in emitting side
Occasion there is obvious advantage.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modification, should all belong to the covering scope of the present invention.
Claims (8)
1. a kind of wireless charging magnetic coupling arrangement for multi-load, it is characterised in that：Including transmitting coil and with the transmitting
Some receiving coils of coil coupling, the receiving coil is matrix pattern quadrature coil or double king's structure quadrature coils；
The transmitting coil is made up of some wire races being parallel to each other, and the sense of current is consistent in same wire race, arbitrary neighborhood
The sense of current is opposite in wire race；
The matrix pattern quadrature coil includes orthogonal first magnetic core and the second magnetic core, first magnetic core and the second magnetic core
End be respectively arranged with the 3rd magnetic core normal thereto, the first magnetic core and be provided with the first winding, be provided with the second magnetic core
Second winding, the outside bag of four the 3rd magnetic cores is provided with the tertiary winding, and the first winding, the second winding, the tertiary winding are vertical two-by-two；
Described pair of king's structure quadrature coil includes orthogonal first magnetic core and the second magnetic core, first magnetic core and the second magnetic
The end of core, which is respectively arranged with the 3rd magnetic core normal thereto, the first magnetic core, is provided with the first winding, is set on the second magnetic core
There is the second winding；It is provided with the 4th magnetic core on the outside of 3rd magnetic core of the first magnetic core wherein one end, the 3rd magnetic core both sides are along the
The tertiary winding is provided with one magnetic core direction；The 4th magnetic core is provided with the outside of 3rd magnetic core of the second magnetic core wherein one end, this
Three magnetic core both sides are provided with the 4th winding along on the second magnetic core direction.
2. the wireless charging magnetic coupling arrangement according to claim 1 for multi-load, it is characterised in that：The emission lines
Enclose as Multi-layer Parallel or interlayer series connection.
3. the wireless charging magnetic coupling arrangement according to claim 1 for multi-load, it is characterised in that：The emission lines
The corner of circle is right angle, obtuse angle or fillet.
4. the wireless charging magnetic coupling arrangement according to claim 1 for multi-load, it is characterised in that：The emission lines
The bottom side of circle is provided with magnetic core or magnet.
5. the wireless charging magnetic coupling arrangement according to claim 1 for multi-load, it is characterised in that：The matrix pattern
In quadrature coil, the 3rd magnetic core and the first magnetic core, the second magnetic core are in same plane or the 3rd magnetic core less than the first magnetic core, second
Magnetic core is set.
6. the wireless charging magnetic coupling arrangement according to claim 1 for multi-load, it is characterised in that：The matrix pattern
In quadrature coil, the tertiary winding is rectangle winding or circular winding.
7. the wireless charging magnetic coupling arrangement according to claim 1 for multi-load, it is characterised in that：Described pair of king's knot
In structure quadrature coil, the length of the 4th magnetic core is more than or equal to the 3rd magnetic core.
8. a kind of circuit of the wireless charging magnetic coupling arrangement for multi-load based on described in claim 1, it is characterised in that：
Including wireless charging magnetic coupling arrangement as claimed in claim 1, power network, circuit of power factor correction, inverter circuit, primary side are mended
Repay network to be sequentially connected, the output end of primary side compensation network is connected with the transmitting coil of the wireless charging magnetic coupling arrangement；Institute
The each receiving coil for stating wireless charging magnetic coupling arrangement compensates network connection, each secondary compensation network point with a secondary respectively
It is not connected with a current rectifying and wave filtering circuit, each current rectifying and wave filtering circuit is connected with a load respectively.
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| CN114006478A (en) * | 2021-11-17 | 2022-02-01 | 重庆前卫无线电能传输研究院有限公司 | Electronic mall exhibition and sales table based on wireless power supply and circuit parameter design method thereof |
| CN114123535A (en) * | 2021-11-24 | 2022-03-01 | 国网江苏省电力有限公司检修分公司 | Wireless power transmission coupling mechanism for on-line monitoring equipment on extra-high voltage transmission line |
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