CN208061818U - A kind of parallel winding of multiple coils coil panel for magnetic coupling wireless power transmission - Google Patents
A kind of parallel winding of multiple coils coil panel for magnetic coupling wireless power transmission Download PDFInfo
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- CN208061818U CN208061818U CN201721597703.2U CN201721597703U CN208061818U CN 208061818 U CN208061818 U CN 208061818U CN 201721597703 U CN201721597703 U CN 201721597703U CN 208061818 U CN208061818 U CN 208061818U
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- 230000008878 coupling Effects 0.000 title claims abstract description 54
- 238000010168 coupling process Methods 0.000 title claims abstract description 54
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 54
- 230000005540 biological transmission Effects 0.000 title claims abstract description 24
- 238000004804 winding Methods 0.000 title claims abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 17
- 239000004411 aluminium Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 5
- 206010073310 Occupational exposures Diseases 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 231100000675 occupational exposure Toxicity 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
本实用新型涉及一种用于磁耦合无线电能传输的多线并绕线圈盘，包括耦合线圈、高频软磁体、屏蔽铝板等组件。耦合线圈为平面型，由多根导线紧密并绕而成，可以是单线圈或多线圈。当为单线圈时，并绕的多根导线的起绕点和终绕点，旋转对称的分布在线圈平面内，即每根导线所绕成的单根线圈具有旋转对称性，且具有相同的电感量和电阻值，直接并联则能均衡每根导线的电流。当为多线圈时，构成该多线圈的各个线圈的环绕部分，以整个耦合线圈的中心旋转对称的分布在多线圈的平面内。本实用新型在满足电流密度的同时，实现线圈的最佳覆盖宽度和多线紧密并绕，有效提高耦合系数、减少电磁暴露；还可随意调整线圈匝数(可以是非整数)，得到精确的电感量。
The utility model relates to a multi-wire co-wound coil disk for magnetically coupled wireless energy transmission, which comprises coupling coils, high-frequency soft magnets, shielding aluminum plates and other components. Coupling coils are planar, made of multiple wires tightly wound together, and can be single coils or multiple coils. When it is a single coil, the starting winding point and the ending winding point of multiple wires wound in parallel are distributed in the coil plane with rotational symmetry, that is, the single coil formed by each wire has rotational symmetry and has the same Inductance and resistance, direct parallel connection can balance the current of each wire. When it is a multi-coil, the surrounding parts of each coil constituting the multi-coil are distributed in the plane of the multi-coil rotationally symmetrically to the center of the entire coupling coil. While satisfying the current density, the utility model realizes the optimal coverage width of the coil and the tight parallel winding of multi-wires, effectively improves the coupling coefficient and reduces electromagnetic exposure; the number of turns of the coil (which can be non-integer) can also be adjusted at will to obtain accurate inductance quantity.
Description
Technical field
The utility model is related to a kind of parallel winding of multiple coils coil panels for magnetic coupling wireless power transmission, belong to power supply/nothing
Line electric energy transmission technology field.
Background technology
In recent years, wireless power transmission (wireless power transfer, WPT) technology is by more and more extensive
Concern.According to transporting mechanism difference, there are many forms for wireless power transmission.More ripe radio energy passes in current electric field
Transferring technology is magnetic field coupling-type；Magnetic field coupling-type is divided into as two kinds of magnetic inductive and magnetic resonance, be all by transmitting coil and
Alternation coupled magnetic field between receiving coil realizes that electric energy transmits.
Wireless charging alliance (WPC) establishment in 2008, and the Qi standards based on magnetic induction are released in the world.2015
A4PW and PMA is merged into border wireless charging industry alliance (AirFuel Alliance) of founding a state, and intends compatible magnetic inductive and magnetic is total
The standard for formula of shaking.So far, commercialization paces are accelerated for the wireless power transmission technology of middle low power electronic product.2017
SAE (Society of Automotive Engineers) has issued SAE J2954_August 2017《Light-duty plug-in type/electricity
Wireless power transmission, automatic charging and the calibration method of motor-car》.China also started to formulate electric vehicle wireless charging in 2017
National standard, formally pulled open the prelude of electric vehicle wireless charging industrialization process.
Magnetic field coupling-type radio energy transmission system mainly by (driving magnetic field) primary side device, magnetic coupling and (connects
Receive energy) part such as secondary side device forms.Wherein, magnetic coupling (including coupling coil physical arrangement and resonance compensation electricity
Road topology) it is the most critical part that system realizes remote electric energy transmission, directly affect the power and efficiency of Transmission system.
According to the description (Section 8 of SAE J2954_August 2017) of SAE J2954, coupling coil can be designed to
Various topological structures：Non-polarised, polarized or multi-coil is topological.Coil panel passes through suitably using ferrite or aluminium backing come really
It protects magnetic flux and exists only in side.1, there are one poles at the center of coil panel for non-polarized topology, have in exterior circumferential opposite
Pole can cause magnetic flux to leave coil disk center and return to its all external margin and form closed loop；When as reception
It is mainly sensitive to the vertical magnetic field in space when coil.2, polarization topology has the poles N and the poles S at the both ends of coil panel, can lead to magnetic
Flux forms closed loop from the poles N to the poles S；It is mainly sensitive to horizontal magnetic field when as receiving coil.3, multi-coil topology
Polarization is combined with non-polarized two kinds of structures usually, and uses decoupling coil, polarization can be generated when as transmitting terminal
Or non-polarized field, and as receiving terminal when capture horizontal magnetic field and vertical magnetic field naturally.SAE J2954, which are enumerated, recommends five kinds
Coil topology structure：(a) round/rectangular non-polarized；(b) em polarization；(c) DD polarizes；(d) multi-coil DDQ；(e) multi-coil is double
Pole.In addition, what the possible yes or no of the transmitting coil and receiving coil of radio energy transmission system was produced by the same manufacturer；
To ensure the test evaluation of interoperability, defined in the annex of SAE J2954 all applicable master-receiving coils (M-VA) and
With reference to the machinery and electrical design specification of-transmitting coil (R-GAs).
In coil topology structure, mechanically and electrically design specification and other existing designs that SAE recommends, coil
Conducting wire mostly uses solid conductor.This single conductor coiling design cannot meet line in certain number of turns and line footpath
Enclose the requirement of Optimal coverage width and close coiling.The number of turns determines that line footpath is determined by current requirements by inductance value requirement；Closely
Coiling can reduce leakage field and conform better to manufacture craft, and Optimal coverage width is for high coupling coefficient.Improve magnetic coupling
The coefficient of coup of coil is of great significance, and not only increases electric energy efficiency of transmission and reduces Occupational exposure to magnetic fields, this is magnetic coupling
Close one of the critical demands that wireless power transmission technical industryization is promoted.In order to simultaneously meet Optimal coverage width and tightly around
Line, it is proposed that the technology path of parallel winding of multiple coils, but existing parallel winding of multiple coils be all multiple conducting wires rise around point in same place and end
Around point also in same place, the big situation of inductance value small there have been the inductance value of inner ring conducting wire and outer ring conducting wire in this way is this
The difference of inductance value leads to the current-unbalance that different conductor is flowed through after parallel connection.In order to compensate for the difference of this inductance value, and go out
The design scheme with outer ring conductor in parallel again is showed after inner ring conducting wire series compensation inductance, but which increase cost, weight, losses
And design complexity.
As it can be seen that under the premise of meeting interoperability, optimization design coupling coil is magnetic coupling wireless power transmission technology
Crucial one of core topic.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, is provided a kind of for magnetic coupling radio energy
The parallel winding of multiple coils coil panel of transmission realizes Optimal coverage width and multi-thread tight under the premise of meeting inductance value and current density
It is close and around achieving the purpose that improve the coefficient of coup, reduce Occupational exposure to magnetic fields and balanced current in wire.
The technical solution of the utility model is as follows：
A kind of parallel winding of multiple coils coil panel for magnetic coupling wireless power transmission, including coupling coil, high-frequency soft magnetic body, screen
Cover the components such as aluminium sheet.Coupling coil is plane and by multiple conducting wires and around into can be unicoil can also be multi-coil
(can be that singly output can also be multi output when as receiving terminal)；High-frequency soft magnetic body is rectangle that is whole or being spliced
(or round or polygon) tabular magnetic sheet；Shield the pure aluminum plate that aluminium sheet is 1mm left and right thicknesses.
The one side of high-frequency soft magnetic body is close to coupling coil, and another side is close to shielding aluminium sheet.Coupling coil is for exciting or catching
Magnetic field is obtained to transmit electric energy；High-frequency soft magnetic body is for magnetic flux and improves the coefficient of coup, while ensuring that magnetic field exists only in group
The side of part；Shielding aluminium sheet is for reducing Occupational exposure to magnetic fields.
It is characterized in that：1, when coupling coil be unicoil when, the monocoil multiple conducting wires of coiling rise around point and eventually around
Point, rotational symmetry are distributed in coil plane, and center of rotational symmetry is the center of coupling coil, then by each wire institute
The single coils from parallel connection of coils being coiled into is a unicoil.In this way and around the single coil that is coiled into of each wire between also there is rotation
Turn symmetry, to inductance value having the same and resistance value, electricity that can be in naturally balanced each wire after directly in parallel
Stream.2, when coupling coil is multi-coil, the circle segment of each coil of the multi-coil is constituted, being distributed in for rotational symmetry is more
In the plane of coil, center of rotational symmetry is the center of entire coupling coil；If each coil of the multi-coil be it is multi-thread simultaneously
Around then the multiple conducting wires of each coil rise around point and eventually around point, being distributed in the center rotational symmetry of each coil respectively
It is then in parallel to become each coil in each coil plane.
The coupling coil use design procedure be：First, to reach high coupling coefficient, select the Optimal coverage of coil wide
It spends (i.e. the distance between coil inner side edge and outer side edges)；Secondly, it according to required inductance value, is calculated in Optimal coverage width
The number of turns (can be non-integer) of coil；Again, according to required current density, the line footpath and core number of share of stock of litz wire are calculated
(being determined by equivalent cross-sectional area)；Finally, according to conducting wire it is close around requirement, required litz wire is divided into more.Calculation formula
For：Optimal coverage width ÷ the number of turns=diameter of wire × conducting wire radical.Divide litz wire equally and optimize and revise diameter of wire so that leads
Line radical is integer, to realized with the technical solution of the utility model coupling coil Optimal coverage width and it is multi-thread it is close simultaneously
Around.
The utility model has following superiority compared with prior art：
1. realizing the Optimal coverage width of coil and multi-thread close and around can greatly improve the coefficient of coup, reduce electromagnetism
Exposure.
2. in Optimal coverage width, coil turn (can be non-integer) can be arbitrarily adjusted, accurate inductance is obtained
Amount.
3. and around more coils between there is rotational symmetry, it is in parallel to inductance value having the same and resistance value
Electric current that afterwards can naturally in balanced each wire, can also eliminate adverse effect of the non-integer the number of turns to electric property.
Description of the drawings
Fig. 1 is a kind of three lines for magnetic coupling wireless power transmission and around unicoil disk schematic diagram.
Fig. 2 is a kind of Double-wire parallel wound unicoil disk schematic diagram for magnetic coupling wireless power transmission.
Fig. 3 is a kind of four lines for magnetic coupling wireless power transmission and around four coil panel schematic diagrames.
Fig. 4 is a kind of four lines for magnetic coupling wireless power transmission and around twin coil disk schematic diagram.
In figure, 1 --- coupling coil, 2 --- high-frequency soft magnetic body, 3 --- shielding aluminium sheet；1-1 --- it rises around point, 1-
2 --- eventually around point.
Specific implementation mode
The utility model is described in detail with most preferred embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1 to 4, a kind of parallel winding of multiple coils coil panel for magnetic coupling wireless power transmission, including coupling line
Enclose the components such as (1), high-frequency soft magnetic body (2), shielding aluminium sheet (3).Coupling coil (1) for plane and by multiple conducting wires and around and
At can be unicoil can also be multi-coil (can be single output can also be multi output) when as receiving terminal；High frequency is soft
Magnet (2) is rectangle that is whole or being spliced (or round or polygon) tabular magnetic sheet；It is 1mm left to shield aluminium sheet (3)
The pure aluminum plate of right thickness.
The one side of high-frequency soft magnetic body (2) is close to coupling coil (1), and another side is close to shielding aluminium sheet (3).Coupling coil (1)
For excitation or capture magnetic field to transmit electric energy；High-frequency soft magnetic body (2) is for magnetic flux and improves the coefficient of coup, ensures simultaneously
Magnetic field exists only in the side of component；Shielding aluminium sheet (3) is for reducing Occupational exposure to magnetic fields.
As shown in Figure 1 and Figure 2, when coupling coil (1) is unicoil, the monocoil multiple conducting wires of coiling rise around point (1-
1) and eventually around point (1-2), rotational symmetry is distributed in coil plane, and center of rotational symmetry is the center of coupling coil (1),
Then single coils from parallel connection of coils each wire being coiled into is a unicoil.In this way and around each wire be coiled into it is single
Also there is rotational symmetry between coil, it, can naturally directly after parallel connection to inductance value having the same and resistance value
Electric current in each wire that weighs.
As shown in Figure 3, Figure 4, when coupling coil (1) is multi-coil, the circular portion of each coil of the multi-coil is constituted
Point, rotational symmetry is distributed in the plane of multi-coil, and center of rotational symmetry is the center of entire coupling coil (1)；If should
Each coil of multi-coil is parallel winding of multiple coils, then the multiple conducting wires of each coil rise around point (1-1) and eventually around point (1-2), divide
Not being distributed in each coil plane with the center rotational symmetry of each coil, it is then in parallel to become each coil.
The coupling coil use design procedure be：First, to reach high coupling coefficient, select the Optimal coverage of coil wide
It spends (i.e. the distance between coil inner side edge and outer side edges)；Secondly, it according to required inductance value, is calculated in Optimal coverage width
The number of turns (can be non-integer) of coil；Again, according to required current density, the line footpath and core number of share of stock of litz wire are calculated
(being determined by equivalent cross-sectional area)；Finally, according to conducting wire it is close around requirement, required litz wire is divided into more.Calculation formula
For：Optimal coverage width ÷ the number of turns=diameter of wire × conducting wire radical.Divide litz wire equally and optimize and revise diameter of wire so that leads
Line radical is integer, to realized with the technical solution of the utility model coupling coil Optimal coverage width and it is multi-thread it is close simultaneously
Around.
Claims (1)
1. a kind of parallel winding of multiple coils coil panel for magnetic coupling wireless power transmission, including coupling coil (1), high-frequency soft magnetic body
(2), shielding aluminium sheet (3)；The one side of high-frequency soft magnetic body (2) is close to coupling coil (1), and another side is close to shielding aluminium sheet (3)；Shielding
Aluminium sheet (3) is the pure aluminum plate of 1mm left and right thicknesses, and high-frequency soft magnetic body (2) is rectangle or circle or more that be whole or being spliced
Side shape tabular magnetic sheet, coupling coil (1) are plane and by multiple conducting wires and around into can be unicoil can also be more
It can also be multi output that coil, which can be single output when as receiving terminal,；
It is characterized in that：When coupling coil (1) is unicoil, the monocoil multiple conducting wires of coiling rise around point (1-1) and end
Around point (1-2), rotational symmetry is distributed in coil plane, and center of rotational symmetry is the center of coupling coil (1), so simultaneously
Around the single coil that is coiled into of each wire between also there is rotational symmetry, the solid wire for being then coiled into each wire
Circle in parallel is a unicoil；When coupling coil (1) is multi-coil, the circle segment of each coil of the multi-coil is constituted,
Rotational symmetry is distributed in the plane of multi-coil, and center of rotational symmetry is the center of entire coupling coil (1)；If this is multi-thread
Circle each coil be parallel winding of multiple coils, then the multiple conducting wires of each coil rise around point (1-1) and end around point (1-2), respectively with
The center rotational symmetry of each coil is distributed in each coil plane, then in parallel to become each coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721597703.2U CN208061818U (en) | 2017-11-25 | 2017-11-25 | A kind of parallel winding of multiple coils coil panel for magnetic coupling wireless power transmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721597703.2U CN208061818U (en) | 2017-11-25 | 2017-11-25 | A kind of parallel winding of multiple coils coil panel for magnetic coupling wireless power transmission |
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| CN208061818U true CN208061818U (en) | 2018-11-06 |
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| CN201721597703.2U Withdrawn - After Issue CN208061818U (en) | 2017-11-25 | 2017-11-25 | A kind of parallel winding of multiple coils coil panel for magnetic coupling wireless power transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841389A (en) * | 2017-11-25 | 2019-06-04 | 张朝辉 | A kind of parallel winding of multiple coils coil panel for magnetic coupling wireless power transmission |
-
2017
- 2017-11-25 CN CN201721597703.2U patent/CN208061818U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841389A (en) * | 2017-11-25 | 2019-06-04 | 张朝辉 | A kind of parallel winding of multiple coils coil panel for magnetic coupling wireless power transmission |
| CN109841389B (en) * | 2017-11-25 | 2025-02-07 | 张朝辉 | A multi-wire parallel-wound coil disk for magnetically coupled wireless power transmission |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181106 Effective date of abandoning: 20250207 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181106 Effective date of abandoning: 20250207 |