CN106952710B - 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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- CN106952710B CN106952710B CN201710333353.7A CN201710333353A CN106952710B CN 106952710 B CN106952710 B CN 106952710B CN 201710333353 A CN201710333353 A CN 201710333353A CN 106952710 B CN106952710 B CN 106952710B
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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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- Power Engineering (AREA)
- 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 several receiving coils, the receiving coil is matrix pattern quadrature coil or double king's structure quadrature coils；Transmitting coil is made of several conducting wire races being mutually parallel, and current direction is opposite in arbitrary neighborhood conducting 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 third magnetic core normal thereto, and the first winding, the second winding, the tertiary winding are respectively arranged on the first magnetic core, on the second magnetic core and on the outside of four third 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 circuits.The present invention can realize that receiving coil effectively evenly receives magnetic field energy within the scope of transmitting coil, have the higher coefficient of coup and higher electric energy efficiency of transmission.
Description
Technical field
The present invention relates to a kind of wireless charging magnetic coupling arrangements and its circuit for multi-load.
Background technology
Wireless power transmission technology have it is convenient, without mechanical loss, without characteristics such as electric sparks, in a variety of particular surroundings such as people
The fields such as internal portion, mine, high voltage environment, underwater, electric vehicle have applications well foreground, obtained in recent years academia and
The extensive concern of business circles.
The magnetic coupling arrangement of wireless power transmission technology mainly uses planar spiral coil, traditional magnetic coupling knot at present
In structure, the single transmitting lateral coil of generally use 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 magnetic direction and reception line that transmitting coil is emitted
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 design schemes at present：
1. two coupling coil face schemes and its derivative
The typical patent for having 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 receiving module》（Application number：
201521018507.6）；But in the technical scheme, the relative position of face transmitting lateral coil and reception lateral coil is relatively solid
Fixed, it is necessary to assure it not misplacing in both vertical direction, plane must be parallel where two coils, if there are certain angle,
The coefficient of coup declines quickly, and place, which limit the convenience that wireless charging device uses.
2. multiple coil stacked arrangements are as emitting side coil version
The typical patent for having 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 " for improving planar inductive charging platform
Can "（Application number 200680030162.3）；But in the technical scheme, array emitter coil can realize the certain degree of freedom of plane
Wireless charging, but its transmitting coil winding path is long, and conductor resistance is big, and winding loss is larger, and cost improves.
3. isosceles triangle distribution coil emits, cross quadrature coil reception scheme
The typical patent for having 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 has more right angle, conducting wire electricity
Resistance is big so that whole winding loss increases.For receiving coil, z-axis direction receives winding coupled poor performance, and cost carries
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 controlling party
Method》（Application number：201010572170.9）；But it in the technical scheme, needs to be additionally provided magnetic field tracking servo-drive system, and deposits
The mechanical life the problem of, it is frequently used in certain 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》
（Application number：201480027153.3）；But in the technical scheme, for receiving coil one, winding turns length is long, winding damage
Consumption is big and cost is higher, for receiving coil two, although winding turns length reduces, and increases the ring for receiving z-axis direction magnetic field
Shape winding, but if it is intended to reducing x, y-axis direction receives winding turns length it is necessary to reduce guiding magnetic core outermost sectional area, meeting
Causing magnetic resistance excessive, collects x, the ability in the magnetic field that the directions y pass over is obviously insufficient, x, and the coefficient of coup in the directions y is not high, this
It is conflict.
Invention content
In view of this, the purpose of the present invention is to provide a kind of wireless charging magnetic coupling arrangements and its electricity for multi-load
Road can realize that receiving coil effectively evenly receives magnetic field energy within the scope of transmitting coil, have the higher coefficient of coup
With higher electric energy efficiency of transmission.
To achieve the above object, the present invention adopts 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 hair
Several receiving coils of ray circle coupling, the receiving coil are matrix pattern quadrature coil or double king's structure quadrature coils；
The transmitting coil is made of several conducting wire races being mutually parallel, and current direction is consistent in same conducting wire race, arbitrarily
Current direction is opposite in adjacent wires race；
The matrix pattern quadrature coil includes orthogonal first magnetic core and the second magnetic core, first magnetic core and second
The end of magnetic core is respectively arranged with third magnetic core normal thereto, and the first winding is provided on the first magnetic core, is set on the second magnetic core
It is equipped with the second winding, the outside packet of four third magnetic cores is equipped with the tertiary winding, and the first winding, the second winding, the tertiary winding are two-by-two
Vertically；
Double king's structure quadrature coils include orthogonal first magnetic core and the second magnetic core, first magnetic core and
The end of two magnetic cores is respectively arranged with third magnetic core normal thereto, is provided with the first winding on the first magnetic core, on the second magnetic core
It is provided with the second winding；It is provided with the 4th magnetic core on the outside of the third magnetic core of the first magnetic core wherein one end, the third magnetic core both sides edge
It and is provided with the tertiary winding on the first magnetic core direction；It is provided with the 4th magnetic core on the outside of the third magnetic core of the second magnetic core wherein one end,
The third magnetic core both sides are provided with the 4th winding 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, third magnetic core and the first magnetic core, the second magnetic core are in same plane
Or third magnetic core is arranged less than the first magnetic core, the second magnetic core.
Further, in the matrix pattern quadrature coil, the tertiary winding is rectangle winding or round winding.
Further, in double king's structure quadrature coils, the length of the 4th magnetic core is greater than or equal to third 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
Micro USB electromagnetic coupling structure, power grid, circuit of power factor correction, inverter circuit, primary side compensation network are sequentially connected, primary side compensation
The output end of network is connect with the transmitting coil of the wireless charging magnetic coupling arrangement；The wireless charging magnetic coupling arrangement it is every
One receiving coil is connect with a secondary side compensation network respectively, and each pair side compensation network is connect 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 within the scope of transmitting coil, tool
There are the higher coefficient of coup and higher electric energy efficiency of transmission, the offset of relative position occurs in receiving side and emitting side magnetic structure
Or certain lift-off（The distance between emitting side and receiving side magnetic structure）When, it also can guarantee enough coefficients of coup, sending out
Penetrating side and the unfixed occasion of receiving side magnetic structure relative position has apparent 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.
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 wire 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 concatenated transmitting coil of interlayer of one embodiment of the invention.
Fig. 7 A are the multiturn transmitting coil top layers of the double-deck PCB fold-back winding of one embodiment of the invention.
Fig. 7 B are the multiturn transmitting coil bottoms of the double-deck PCB fold-back winding of one embodiment of the invention.
Fig. 7 C are the multiturn transmitting coils of the double-deck PCB fold-back winding of one embodiment of the invention.
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 schematic diagrams of position 1 of the present invention.
Fig. 9 B are the correspondence magnetic circuit figures of Fig. 9 A.
Fig. 9 C are the structural schematic diagrams of position 2 of the present invention.
Fig. 9 D are the correspondence magnetic circuit figures of Fig. 9 C.
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.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and embodiments.
The present embodiment provides a kind of wireless charging magnetic coupling coils, it is characterised in that：Including a transmitting coil and with it is described
Several receiving coils of transmitting coil coupling, the receiving coil are matrix pattern quadrature coil or double king's structure quadrature coils；
In this present embodiment, the transmitting coil be current-return-type planar rectangular coil, by it is several be mutually parallel lead
Line segment（Or conducting wire race）Composition, arbitrary neighborhood conducting line segment（Or conducting wire race）Current direction is on the contrary, current direction phase in each conducting wire race
Together；It is the current direction schematic diagram of the transmitting coil as shown in Figure 1A, 1101 indicate that the vertical paper of electric current in conductor flows into,
1102 indicate the electric current vertical paper outflow in conductors, the electric current flowing formed it into is distributed to form adjacent wires between in opposite
Direction of current flow, transmitting coil constitute an emission of magnetic field plane, the magnetic field radiated can be controlled in certain model
In enclosing, 1301,1302 in Figure 1B indicate adjacent Liang Ge conducting wires race, are indicated using PCB windings, 1303,1304 in Fig. 1 C
Adjacent Liang Ge conducting wires race indicates adjacent Liang Ge conducting wires race, using Litz using copper wire winding, 1305,1306 in Fig. 1 D
Line winding.
In this present embodiment, there are the high-permeability materials such as magnetic core or magnet in the transmitting coil bottom side, and increasing magnetic core can
Magnetic coupling is improved, magnetic field exposure is reduced.In order to further decrease magnetic field exposure, sheet metal can be increased on the downside of magnetic core.
The transmitting coil can be, but not limited to as plain conductor, can be, but not limited to copper wire include tinned wird, it is silver-plated
Copper wire or Litz lines etc..
Please comparison diagram 2 and Fig. 3, in figure, 1201 and 1211 indicate the magnetic lines of force, and 1202 and 1212 indicate windings（Carry above
The conducting line segment arrived（Or conducting wire race））, 1203 and 1213 indicate 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 a certain range, and the transmitting coil structure of the present embodiment has
The smaller 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
Not with reference to Fig. 4 A, Fig. 4 B and Fig. 4 C, wherein 1402,1412,1422 be winding, and 1401,1411,1421 be current input terminal,
1403,1413,1423 be current output terminal.With another embodiment, in order to increase winding conduction cross-sectional area, reduce winding damage
Consumption, the set-up mode of Multi-layer Parallel may be used in transmitting coil, i.e., the 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, please refers to Fig. 5, current path is specifically 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
1601,1604,1607 face of hole, 1603,1606,1609 face of through-hole；Middle level current path:Electric current is flowed into through terminal 1601,
Into the middle level through-hole 1604 with 1601 face of top layer through-hole, the middle levels PCB winding 1605 is flowed through, from middle level through-hole 1606, is entered
With the top layer through-hole 1603 of 1606 face of middle level through-hole, 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 the bottom through-hole 1607 with 1601 face of top layer through-hole, flow through PCB bottoms around
Group 1608, from bottom through-hole 1609, by way of middle level through-hole 1606, into the top layer through-hole 1603 with 1609 face of bottom through-hole,
Most flowed out afterwards through terminal 1603.
In another embodiment, emit magnetic field intensity to improve primary side, transmitting coil can also use interlayer concatenated
Set-up mode please refers to Fig. 6, and still by taking fillet as an example, current path is specific as follows：Electric current is flowed into through terminal 1701, stream
Through PCB top layers winding 1702, passed through from top layer through-hole 1703 into the bottom through-hole 1704 with 1703 face of top layer through-hole
PCB bottoms winding 1705 is most flowed out through 1706 terminals afterwards.
In another embodiment, the double-deck fold-back winding may be used in transmitting coil（Top layer containing PCB and PCB bottoms）, to increase
Add transmitting coil the number of turns, remains unchanged by taking fillet as an example to improve primary side transmitting magnetic field intensity, please refer to Fig. 7 A, 7B, 7C, 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
The bottom through-hole 1804 of layer 1803 face of through-hole, flows through PCB bottoms winding 1805, from bottom through-hole 1806, leads into bottom
The top layer through-hole 1807 of 1806 face of hole flows through PCB top layers winding 1808, from top layer through-hole 1809, into top layer through-hole
The bottom through-hole 1810 of 1809 faces flows through PCB bottoms winding 1811, from bottom through-hole 1812, into bottom through-hole 1812
The top layer through-hole 1813 of face flows through PCB top layers winding 1814, from top layer through-hole 1815, into 1815 face of top layer through-hole
Bottom through-hole 1816, flow through PCB bottoms winding 1817, most afterwards through terminal 1818 flow out.
Fig. 8 A are please referred to, the matrix pattern quadrature coil includes 2004 and second magnetic core of orthogonal first magnetic core
2005, the end of first magnetic core, 2004 and second magnetic core 2005 be respectively arranged with third magnetic core 2006 normal thereto,
2007,2008 and 2009, the first winding 2002 is provided on the first magnetic core 2004, and 2005 are provided with the second winding on the second magnetic core
2001, the outside packets of four third magnetic cores 2006,2007,2008 and 2009 is equipped with the tertiary winding 2003, the first winding 2002, the
Two windings 2001, the tertiary winding 2003 are vertical two-by-two, and in this present embodiment, third magnetic core 2006,2007,2008 and 2009 is less than
It contacts with each other between first magnetic core and the second magnetic core and three；The length of first magnetic core and the second magnetic core is about in adjacent wires race
1 times of distance of point, the third magnetic core distance being mutually parallel are about 1 times of the distance at adjacent wires race midpoint, three it is orthogonal around
It is not coupled between group, is 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 induction 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 keep in a certain range, improving overall coupling performance.The magnetic core outermost of third magnetic core increase guiding magnetic field energy
Sectional area reduces magnetic resistance as far as possible, collects the magnetic field that transmitting coil passes 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, third 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, the tertiary winding 2023 is circle, and corresponding third magnetic core 2024 is with matching arc-shaped.
Three kinds of front structure is all matrix pattern structure, if with above-mentioned current-return-type planar rectangular transmitting coil
It matches, receiving coil on the direction perpendicular with current direction when moving horizontally, i.e. the side X shown in Fig. 9 A and Fig. 9 C
Be presented peak-to-valley value to, magnetic field distribution, the position shown in Fig. 9 A, just for one-in-and-one-out two parts conducting wire among, have one
Partial magnetic field offsets 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 is at this time just needed in the party then peak-to-valley value is presented in the inevitable horizontal displacements with X-direction of voltage V1 that winding 1 senses
Winding 2 is introduced to each again, and second correspondingly is carried out to end and is extended, forms double king's structure cross lines as shown in Figure 10
Circle.
Figure 10 is please referred to, double king's structure quadrature coils include 2035 and second magnetic core of orthogonal first magnetic core
2036, the end of first magnetic core, 2035 and second magnetic core 2035 be respectively arranged with third magnetic core 2037 normal thereto,
2038,2039 and 2040, the first winding 2033 is provided on the first magnetic core 2035, and the second winding is provided on the second magnetic core 2036
2031；2039 outside of third magnetic core of the first magnetic core 2035 wherein one end is provided with the 4th magnetic core 2042,2039 He of third magnetic core
4th magnetic core 2042 is linked together by the extension of the first magnetic core 2035, and 2039 both sides of third magnetic core are along the first magnetic core
The tertiary winding 2034 is provided on 2035 directions；2038 outside of third magnetic core of the second magnetic core 2036 wherein one end is provided with the 4th
Magnetic core 2041, third magnetic core 2038 and the 4th magnetic core 2041 are linked together by the extension of the second magnetic core 2036, the third
2038 both sides of magnetic core are provided with the 4th winding 2032 on 2036 direction of the second magnetic core；The length of first magnetic core and the second magnetic core
About 1.5 times of the distance at adjacent wires race midpoint, the third magnetic core distance being mutually parallel be about adjacent wires race midpoint away from
From 1 times, the third magnetic core distance of the 4th magnetic core and same end is about 0.5 times of the distance at adjacent wires race midpoint.
1 schematic diagram of position is as shown in Figure 9 A, and corresponding magnetic circuit is as shown in Figure 9 B, and 2 schematic diagram of position is as shown in Figure 9 C, corresponding magnetic
As shown in fig. 9d, in figure, 2101,2111,2121,2131 indicate transmitting coils on road, in figure a circle transmitting coil it is practical characterize it is more
Circle, 2102,2112,2122,2132 indicate receiving coil, and hollow arrow 2103,2113,2123,2133 indicates current direction, first
The arrow 2114,2134 that tail connects indicates magnetic line of force trend, when being in position 2, the voltage V1 of the one of winding induction in the directions x
When in valley, the voltage V2 of another winding in the directions x induction be in peak value, the voltage V2 that two windings in the directions x are incuded into
Row superposition, the kurtosis of the total voltage induced on the directions x will weaken very much, tend to be flat, and novel receiving coil can be
Arbitrary position translation rotation and holding receive energy and maintain to stablize on transmitting coil platform.
The receiving coil can be rotated freely in x/y plane, can receive magnetic field, be with double king's structure quadrature coils
Example, as shown in Fig. 9 E and Fig. 9 F, Fig. 9 E indicate, relative to position 1 shown in Fig. 9 A, to rotate 45 degree counterclockwise in x/y plane, Fig. 9 F
It indicates, relative to position 1 shown in Fig. 9 A, to be rotated by 90 ° counterclockwise in x/y plane.
In this present embodiment, in double king's structure quadrature coils, the length of the 4th magnetic core is greater than or equal to third magnetic core,
And the size that a, c, e in the size such as Figure 10 of third magnetic core and the 4th magnetic core change induced voltage can be changed by change, lead to
The number of turns for crossing two windings in same direction makes total induced voltage tend to be steady, and two groups of windings interlink more magnetic force as possible
Line.
The transmitting coil can arbitrarily splice, be expanded to the plane of departure, while can keep field homogeneity, may be used
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 please referred to, the present embodiment also provides a kind of circuit of the wireless charging magnetic coupling arrangement for multi-load,
It is characterized in that：Including wireless charging magnetic coupling arrangement, power grid, circuit of power factor correction, inverter circuit, primary side compensation network according to
Secondary connection, the output end of primary side compensation network are connect with the transmitting coil of the wireless charging magnetic coupling arrangement；The wireless charging
Each receiving coil of electromagnetic coupling structure is connect with a secondary side compensation network respectively, and each pair side 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, and load can be next stage DC/DC topologys such as hand
Machine battery charging topology, or be directly resistive load or LED load.
The multicircuit advantage for being used for the wireless charging magnetic coupling arrangement of multi-load is as follows：
1, realize multi-load wireless power transmission, various power occasions be applicable in, have the higher coefficient of coup and
Higher electric energy efficiency of transmission；
2, the offset of relative position or certain lift-off occurs in receiving side and emitting side magnetic structure（Emitting side and receiving side
The distance between magnetic structure）When, also can guarantee enough coefficients of coup, emitting side and receiving side magnetic structure relative position not
Fixed occasion has apparent advantage.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent 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
Several receiving coils of coil coupling, the receiving coil are matrix pattern quadrature coil or double king's structure quadrature coils；
The transmitting coil is made of several conducting wire races being mutually parallel, and the conducting wire race is snakelike cable architecture, same conducting wire race
Interior current direction is consistent, and current direction is opposite in arbitrary neighborhood conducting 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 third magnetic core normal thereto, the first winding is provided on the first magnetic core, is provided on the second magnetic core
The outside packet of second winding, four third magnetic cores is equipped with the tertiary winding, and the first winding, the second winding, the tertiary winding are vertical two-by-two；
Double king's structure quadrature coils include orthogonal first magnetic core and the second magnetic core, first magnetic core and the second magnetic
The end of core is respectively arranged with third magnetic core normal thereto, and the first winding is provided on the first magnetic core, is arranged on the second magnetic core
There is the second winding；The 4th magnetic core is provided on the outside of the third magnetic core of the first magnetic core wherein one end, third magnetic core and the 4th magnetic core are logical
The extension for crossing the first magnetic core links together, which is provided with the tertiary winding on the first magnetic core direction；
It is provided with the 4th magnetic core on the outside of the third magnetic core of the second magnetic core wherein one end, third magnetic core and the 4th magnetic core pass through the second magnetic core
Extension links together, which is provided with the 4th winding 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
Circle is that Multi-layer Parallel or interlayer are connected.
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, third magnetic core and the first magnetic core, the second magnetic core are in same plane or third magnetic core less than the first magnetic core, second
Magnetic core is arranged.
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 round winding.
7. the wireless charging magnetic coupling arrangement according to claim 1 for multi-load, it is characterised in that：Double king's knots
In structure quadrature coil, the length of the 4th magnetic core is greater than or equal to third magnetic core.
8. a kind of circuit based on the wireless charging magnetic coupling arrangement described in claim 1 for multi-load, it is characterised in that：
Including wireless charging magnetic coupling arrangement as described in claim 1, power grid, circuit of power factor correction, inverter circuit, primary side are mended
It repays network to be sequentially connected, the output end of primary side compensation network is connect with the transmitting coil of the wireless charging magnetic coupling arrangement；Institute
The each receiving coil for stating wireless charging magnetic coupling arrangement is connect with a secondary side compensation network respectively, each pair side compensation network point
It is not connect 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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| CN108053987A (en) * | 2017-11-27 | 2018-05-18 | 周小舟 | 3D structure charge coils |
| CN108382220B (en) * | 2018-01-26 | 2020-11-06 | 清华大学 | Wireless charging magnetic coupler between marching for electric vehicle |
| CN108565982B (en) * | 2018-06-13 | 2024-01-09 | 合肥有感科技有限责任公司 | Coil winding structure and wireless power supply system |
| CN110707828A (en) * | 2018-07-09 | 2020-01-17 | 中兴通讯股份有限公司 | Wireless charging receiving device, wireless charging implementation method and mobile terminal |
| CN109835201B (en) * | 2019-03-26 | 2020-09-04 | 中国矿业大学 | Electromagnetic mechanism of wireless charging system of electric automobile and manufacturing method thereof |
| CN110233019B (en) * | 2019-05-21 | 2021-11-23 | 中国人民解放军海军工程大学 | Three-dimensional magnetic field coil with multilayer PCB structure |
| CN110445228A (en) * | 2019-07-09 | 2019-11-12 | 中国电力科学研究院有限公司 | Guide rail type movable robot wireless charging device |
| CN114006478B (en) * | 2021-11-17 | 2024-01-30 | 重庆前卫无线电能传输研究院有限公司 | Electronic mall exhibition stand based on wireless power supply and circuit parameter design method thereof |
| CN114123535B (en) * | 2021-11-24 | 2024-02-23 | 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 ultra-high voltage transmission line |
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