CN114520544A - Wireless power transmission coupling mechanism with compatibility - Google Patents
Wireless power transmission coupling mechanism with compatibility Download PDFInfo
- Publication number
- CN114520544A CN114520544A CN202210168373.4A CN202210168373A CN114520544A CN 114520544 A CN114520544 A CN 114520544A CN 202210168373 A CN202210168373 A CN 202210168373A CN 114520544 A CN114520544 A CN 114520544A
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- Prior art keywords
- coil
- magnetic core
- transmitting end
- core block
- transmitting
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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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
- H01F27/25—Magnetic cores made from strips or ribbons
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The invention relates to the field of wireless power transmission, in particular to a wireless power transmission coupling mechanism with compatibility, which comprises a coupling mechanism main body and a coupling mechanism base body, wherein the coupling mechanism main body comprises: a transmitting end and a receiving end; the transmitting end comprises a first coil, a second coil, a third coil, a fourth coil and a transmitting end magnetic core which can change connection modes, and the receiving end comprises a receiving coil and a receiving end magnetic core; the transmitting end magnetic core comprises a first magnetic core block, a second magnetic core block, a third magnetic core block and a fourth magnetic core block; the receiving end comprises a receiving end plane spiral coil, a receiving end space spiral coil, a receiving end flat solenoid type coil and a receiving end magnetic core. The invention enables the transmitting end coil to be compatible with different types of receiving coils by optimizing the connecting mode of the transmitting end coil and the transmitting end coil, thereby improving the interoperability of the wireless power transmission coupling mechanism and further having important significance for promoting the large-scale application process of the wireless charging industry in China.
Description
Technical Field
The invention relates to the field of wireless power transmission, in particular to a wireless power transmission coupling mechanism with compatibility.
Background
Compared with a traditional charging mode, the wireless power transmission technology has the characteristics of safety and flexibility, and has wide development potential in the aspects of electric vehicles, consumer electronics, smart homes, medical treatment and the like. The magnetic coupling resonance type wireless power transmission technology is characterized in that a transmitting end of wireless power transmission is utilized to convert a high-frequency alternating electric field into a high-frequency alternating magnetic field, energy is transmitted to a load through receiving end coupling, and the high-frequency alternating magnetic field is used as a coupling mechanism of an energy transfer station to play a vital role in a wireless power transmission system. And how to accommodate different coil types becomes one of the design requirements for magnetic couplers.
In addition, the coupling mechanisms commonly used for the wireless power transmission system include a flat solenoid type, a planar spiral type, and a spatial spiral type coil, wherein the flat solenoid type coupling mechanism has advantages of compact structure, light weight, and strong lateral deviation resistance, while the planar spiral type and the spatial spiral type coupling mechanism have advantages of low leakage magnetic field, but the flat solenoid type coil has different requirements on the direction of a coupling magnetic field when the planar spiral type coil, and the spatial spiral type coil are used as receiving coils, and the flat solenoid type coil needs to couple a magnetic field parallel to a plane of a transmitting terminal, while the planar spiral type coil and the spatial spiral type coil need to couple a magnetic field perpendicular to the plane of the transmitting terminal. The traditional wireless power transmission transmitting end can only generate a magnetic field in one direction, and a flat solenoid type receiving end plane spiral receiving end and a space spiral receiving end cannot be considered at the same time.
Disclosure of Invention
In order to solve the above mentioned drawbacks in the background art, the present invention provides a wireless power transmission coupling mechanism with compatibility.
The purpose of the invention can be realized by the following technical scheme:
a wireless electric energy transmission coupling mechanism with compatibility comprises a transmitting end and a receiving end, wherein the transmitting end is electrically connected with the receiving end, the transmitting end comprises a transmitting coil and a transmitting end magnetic core, and the transmitting coil is wound on the transmitting end magnetic core;
the receiving end comprises a receiving end plane spiral coil, a receiving end space spiral coil, a receiving end flat solenoid type coil and a receiving end magnetic core, wherein the receiving end plane spiral coil, the receiving end space spiral coil and the receiving end flat solenoid type coil are all arranged on the receiving side of a magnetic field, and the receiving end flat solenoid type coil is wound on the receiving end magnetic core.
Further, the transmitting coil comprises a first coil, a second coil, a third coil and a fourth coil; the transmitting end magnetic core comprises a first magnetic core block, a second magnetic core block, a third magnetic core block and a fourth magnetic core block; the first coil is wound on the first magnetic core block to form a first section of solenoid-shaped coil transmitting end, the second coil is wound on the second magnetic core block to form a second section of solenoid-shaped transmitting end, the third coil is wound on the third magnetic core block to form a third section of solenoid-shaped transmitting end, and the fourth coil is wound on the fourth magnetic core block to form a fourth section of solenoid-shaped transmitting end.
Furthermore, the first coil, the second coil, the third coil and the fourth coil are the same in size and are rectangular solenoid type coils; the first coil, the second coil, the third coil and the fourth coil are formed by winding the same litz wire; the first coil, the second coil, the third coil and the fourth coil are arranged in the anticlockwise direction, and the included angle between the adjacent coils is 90 degrees and is tightly arranged.
Further, the first magnetic core block, the second magnetic core block, the third magnetic core block and the fourth magnetic core block have the same height, shape and size; the first magnetic core block, the second magnetic core block, the third magnetic core block and the fourth magnetic core block are cuboid ferrite bars, the length of each cuboid ferrite bar is 0.2-0.4L, and L is the total length of the transmitting end.
The invention has the beneficial effects that:
the transmitting coil is divided into four parts, the magnetic core is added in the middle of the coil, and the transmitting coil is connected in different modes to generate a magnetic field perpendicular to the transmitting end or a magnetic field parallel to the transmitting end, so that the wireless power transmission system is suitable for various receiving end coil types, and the compatibility of the wireless power transmission system is improved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts;
FIG. 1 is a schematic view of the launch end of the coupling mechanism of the present invention;
FIG. 2 is a schematic view of the transmitting end and the flat solenoid type receiving end of the coupling mechanism of the present invention;
FIG. 3 is a schematic diagram of the transmitting end of the coupling mechanism and the receiving end of the planar spiral coil of the present invention;
FIG. 4 is a schematic diagram of the transmitting end of the coupling mechanism and the receiving end of the spatial helical coil according to the present invention;
FIG. 5 is a schematic diagram of a transmitting end connection suitable for receiving ends of a planar spiral type and a spatial spiral type according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a transmitting end connection for a flat solenoid type receiving end in accordance with an embodiment of the present invention;
fig. 7 is a schematic diagram of the spatial magnetic flux distribution generated by the embodiment of the present invention and suitable for the planar spiral receiving coil;
FIG. 8 is a schematic diagram of the spatial magnetic flux distribution generated by the embodiment of the present invention and suitable for the spatial helical receiving coil;
FIG. 9 is a schematic illustration of the spatial flux distribution produced by an embodiment of the present invention for a flat solenoid-type receiving coil;
wherein the reference numerals are as follows:
1a, a first coil; 1b, a second coil; 1c, a third coil; 1d, a fourth coil; 2a, a first magnetic core block at the transmitting end; 2b, a transmitting end second magnetic core block; 2c, a third magnetic core block at the transmitting end; 2d, transmitting end fourth magnetic core block; 5. receiving end planar spiral coils; 6. a receiving end space spiral coil; 7. a receiving end flat solenoid type coil; 71. and receiving the end magnetic core.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the coupling mechanism includes a transmitting end and a receiving end, and the transmitting end and the receiving end are electrically connected.
The transmitting end comprises a transmitting coil and a transmitting end magnetic core, and the transmitting coil is wound on the transmitting end magnetic core. The transmitting coil comprises a first coil 1a, a second coil 1b, a third coil 1c and a fourth coil 1 d; the transmitting end magnetic core comprises a first magnetic core block 2a, a second magnetic core block 2b, a third magnetic core block 2c and a fourth magnetic core block 2 d; the first coil 1a is wound on the first magnetic core block 2a to form a first section of solenoid-shaped coil transmitting end, the second coil 1b is wound on the second magnetic core block 2b to form a second section of solenoid-shaped transmitting end, the third coil 1c is wound on the third magnetic core block 2c to form a third section of solenoid-shaped transmitting end, and the fourth coil 1d is wound on the fourth magnetic core block 2d to form a fourth section of solenoid-shaped transmitting end.
The connection mode among the transmitting coils is changed, so that the receiving coils can be suitable for different types of receiving coils, and meanwhile, the four sections of transmitting terminals are connected in series according to the direction of an inward excitation magnetic field and are suitable for planar spiral or space spiral receiving coils; two sections of transmitting ends separated by 180 degrees are connected in series according to ports exciting magnetic fields in the same direction, and the receiving coil is suitable for solenoid type receiving coils.
The first coil 1a, the second coil 1b, the third coil 1c and the fourth coil 1d have the same size and are rectangular solenoid type coils; the first coil 1a, the second coil 1b, the third coil 1c and the fourth coil 1d are formed by winding the same litz wire; the first coil 1a, the second coil 1b, the third coil 1c and the fourth coil 1d are arranged in the counterclockwise direction, and the adjacent coils are closely arranged at an included angle of 90 degrees.
Wherein, the first magnetic core block 2a, the second magnetic core block 2b, the third magnetic core block 2c and the fourth magnetic core block 2d have the same height, shape and size; the first magnetic core block 2a, the second magnetic core block 2b, the third magnetic core block 2c and the fourth magnetic core block 2d are cuboid ferrite bars, the length is 0.2-0.4L, and L is the total length of the transmitting end. The length of the magnetic core block is a non-limiting preferred choice, and the length of the magnetic core block can be designed according to practical situations. The shape of the transmitting-end magnetic core includes a rectangular parallelepiped, and the shape is not strictly limited.
The receiving end comprises a receiving end plane spiral coil 5, a receiving end space spiral coil 6, a receiving end flat solenoid type coil 7 and a receiving end magnetic core 71, wherein the receiving end plane spiral coil 5, the receiving end space spiral coil 6 and the receiving end flat solenoid type coil 7 are all arranged on the magnetic field receiving side, and the receiving end flat solenoid type coil 7 is wound on the receiving end magnetic core 71.
Based on the above analysis, in order to generate a magnetic field with a vertical transmitting end facing upward in a plane, so as to match with a receiving coil of a planar spiral type or a spatial spiral type, as shown in fig. 5, four segments of transmitting coils are connected in a manner that a current flows from a 'port, and then a → B', B → C ', C → D', as shown in fig. 7 and 8, a magnetic force line distribution pattern is generated after the transmitting coils are connected in the above connection manner, and it can be seen that a vertical magnetic field capable of being coupled with the planar spiral coil or the spatial spiral coil is generated above the transmitting coils.
While for the flat solenoid type receiving coil, a magnetic field parallel to the transmitting end is required to be coupled with the receiving coil, as shown in fig. 6, when the transmitting coil flows in from a ', a → C', B and B ', D and D' are in idle connection, a magnetic field of parallel magnetic flux is generated above the transmitting end as shown in fig. 9.
Compared with the prior art, the transmitting coil is divided into four parts, the magnetic core is added in the middle of the coil, and the transmitting coil is connected in different modes to generate a magnetic field perpendicular to the transmitting end or a magnetic field parallel to the transmitting end, so that the transmitting coil is suitable for various receiving end coil types, and the compatibility of a wireless power transmission system is improved.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (4)
1. A wireless power transmission coupling mechanism with compatibility is characterized in that the coupling mechanism comprises a transmitting end and a receiving end, the transmitting end is electrically connected with the receiving end, the transmitting end comprises a transmitting coil and a transmitting end magnetic core, and the transmitting coil is wound on the transmitting end magnetic core;
the receiving terminal includes receiving terminal plane spiral coil (5), receiving terminal space spiral coil (6), the flat solenoid type coil of receiving terminal (7) and receiving terminal magnetic core (71), and receiving terminal plane spiral coil (5), receiving terminal space spiral coil (6), receiving terminal flat solenoid type coil of receiving terminal (7) all set up in the magnetic field receiving side, and the winding of receiving terminal flat solenoid type coil of receiving terminal (7) is on receiving terminal magnetic core (71).
2. A wireless power transfer coupling mechanism with compatibility according to claim 1, wherein the transmitting coil comprises a first coil (1a), a second coil (1b), a third coil (1c), a fourth coil (1 d); the transmitting end magnetic core comprises a first magnetic core block (2a), a second magnetic core block (2b), a third magnetic core block (2c) and a fourth magnetic core block (2 d); the first coil (1a) is wound on the first magnetic core block (2a) to form a first section of solenoid type coil transmitting end, the second coil (1b) is wound on the second magnetic core block (2b) to form a second section of solenoid type transmitting end, the third coil (1c) is wound on the third magnetic core block (2c) to form a third section of solenoid type transmitting end, and the fourth coil (1d) is wound on the fourth magnetic core block (2d) to form a fourth section of solenoid type transmitting end.
3. A compatible wireless power transmission coupling mechanism according to claim 2, wherein the first coil (1a), the second coil (1b), the third coil (1c) and the fourth coil (1d) have the same size and are all rectangular solenoid type coils; the first coil (1a), the second coil (1b), the third coil (1c) and the fourth coil (1d) are formed by winding the same litz wire; the first coil (1a), the second coil (1b), the third coil (1c) and the fourth coil (1d) are arranged in the anticlockwise direction, and the included angle between adjacent coils is 90 degrees and the adjacent coils are tightly arranged.
4. A compatible wireless power transmission coupling mechanism according to claim 2, wherein the first, second, third and fourth magnetic core blocks (2a, 2b, 2c, 2d) have the same height, shape and size; the first magnetic core block (2a), the second magnetic core block (2b), the third magnetic core block (2c) and the fourth magnetic core block (2d) are cuboid ferrite bars, the length is 0.2-0.4L, and L is the total length of the transmitting end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210168373.4A CN114520544A (en) | 2022-02-23 | 2022-02-23 | Wireless power transmission coupling mechanism with compatibility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210168373.4A CN114520544A (en) | 2022-02-23 | 2022-02-23 | Wireless power transmission coupling mechanism with compatibility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114520544A true CN114520544A (en) | 2022-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210168373.4A Pending CN114520544A (en) | 2022-02-23 | 2022-02-23 | Wireless power transmission coupling mechanism with compatibility |
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| Country | Link |
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| CN (1) | CN114520544A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115313676A (en) * | 2022-07-15 | 2022-11-08 | 国网江苏省电力有限公司超高压分公司 | Magnetic coupling mechanism for dynamic wireless charging |
| CN115441597A (en) * | 2022-09-22 | 2022-12-06 | 福州大学 | Modular stacking method of magnetic coupling structure of wireless power transmission system |
-
2022
- 2022-02-23 CN CN202210168373.4A patent/CN114520544A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115313676A (en) * | 2022-07-15 | 2022-11-08 | 国网江苏省电力有限公司超高压分公司 | Magnetic coupling mechanism for dynamic wireless charging |
| CN115313676B (en) * | 2022-07-15 | 2024-04-26 | 国网江苏省电力有限公司超高压分公司 | Magnetic coupling mechanism for dynamic wireless charging |
| CN115441597A (en) * | 2022-09-22 | 2022-12-06 | 福州大学 | Modular stacking method of magnetic coupling structure of wireless power transmission system |
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