CN113300479A - Be applied to wireless power transmission's peano parting coil transmission device - Google Patents
Be applied to wireless power transmission's peano parting coil transmission device Download PDFInfo
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- CN113300479A CN113300479A CN202110554797.XA CN202110554797A CN113300479A CN 113300479 A CN113300479 A CN 113300479A CN 202110554797 A CN202110554797 A CN 202110554797A CN 113300479 A CN113300479 A CN 113300479A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 51
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000004907 flux Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 14
- 230000006698 induction Effects 0.000 description 11
- 238000004088 simulation Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
-
- 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
-
- 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
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
Abstract
The invention relates to the technical field of wireless power transmission, in particular to a Piano type coil transmission device applied to wireless power transmission. The device comprises a transmitting device: the transmitting coil is wound in a Piano type mode; the receiving device: the receiving coil is wound in a square mode. The invention can be used as an auxiliary coil of the transmitting coil of the electric automobile, and the anti-offset capability of the transmitting coil is improved. When the transmitting coil and the receiving coil have error deviation, the receiving coil can still receive more magnetic flux, and the transmission efficiency of the transmitting coil under the condition of deviation resistance is improved.
Description
Technical Field
The invention relates to the technical field of wireless power transmission, in particular to a Piano type coil transmission device applied to wireless power transmission.
Background
With the development of science and technology and higher requirements on the environment, people have higher standards and requirements on the functions and the application range of electric equipment. The traditional wire transmission mode has more prominent limitation, and has the problems of wire abrasion, contact spark, plug electric erosion abrasion and the like.
Wireless Power Transfer (WPT) has emerged as a promising power transfer technology. Mainly, there are electromagnetic induction type, magnetic resonance type, radio wave type, and the like. The electromagnetic induction type transmission has the advantages of wide application range, simple realization, low switching frequency, wide load and the like, and can realize short-distance and high-power energy transmission. For electromagnetic induction transmission systems, the quality of the coupling coil has a direct influence on the transmission distance, transmission power, transmission efficiency, etc. of the system. Therefore, in order to improve the transmission efficiency of the WPT system, the shape and structure of the coupling coil need to be designed and optimized accordingly.
Meanwhile, electric vehicles have made remarkable progress and development. Compared with the traditional automobile, the emission of the electric automobile in the running process is small and not few, and the popularization of the electric automobile can greatly improve the energy structure. And the WPT accounts for more and more in the charging mode of the electric automobile. When the WPT technology is actually applied to an electric vehicle, in the process of parking the vehicle to a predetermined charging position, an error offset occurs between a receiving end located at the position of a vehicle bottom plate and a wireless charging transmitting end located on the ground, which reduces the output power and efficiency of a wireless charging system, prolongs the charging time, and affects the service life of the device.
Coupling coils in the existing electric automobile WPT system generally comprise a circular coil, a rectangular coil, a DD coil and the like. The circular coil and the rectangular coil have poor anti-offset capability; for the DD coil, the direction parallel to the common side of the two D-type coils has stronger anti-offset capability, but the direction perpendicular to the common side of the two D-type coils has weaker anti-offset capability.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a Piano type coil structure applied to wireless electric energy transmission, which can play a role of an auxiliary coil and increase the anti-deviation capability of a main coil.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a Piano type coil transmission device applied to wireless power transmission is characterized by comprising:
the transmitting device: the transmitting coil is wound in a Piano type mode;
the receiving device: the receiving coil is wound in a square mode.
In the above-mentioned peano parting coil transmission device applied to wireless power transmission, the peano parting is wound in a peano curve construction manner, that is, a square is taken and divided into 9 equal small squares, each small square is divided into 9 equal squares … …, finally, N squares are obtained, then, from the square at the lower left corner to the square at the upper right corner, the centers of the small squares are sequentially connected by line segments, and the peano parting coil is formed.
In a foretell pickoff coil transmission device who is applied to wireless power transmission, square receiving coil is according to corresponding pickoff parting curve coil size coiling, and length is the length of the side of the pickoff parting curve coil of corresponding number of times, and the width is the multiple length of the X of the corresponding pickoff parting coil curve.
In the above pihinuo split coil transmission device for wireless power transmission, the peripheral circuits of the transmitting coil and the receiving coil are capacitance compensation circuits, and are respectively connected in series with the transmitting coil and the receiving coil.
In the above piano type coil transmission device applied to wireless power transmission, the transmitting coil is connected with the peripheral circuit, the impedance matching circuit, the power amplifier and the high-frequency signal generator in sequence to form a transmitting system.
In the above peano-type coil transmission device applied to wireless power transmission, the transmitting coil is a peano-type coil or a combination of a square coil and a peano-type coil, and the receiving coil is a square coil; when the transmitting coil adopts the combination of the square coil and the peano parting coil, the square coil and the peano parting coil adopt a stacking mode, and the square coil is arranged above the peano parting coil.
In the above-mentioned peano-type coil transmission device applied to wireless power transmission, the receiving coil and the receiving-side load together constitute a receiving system.
In the above-mentioned peano parting coil transmission device applied to wireless power transmission, both the transmitting coil and the receiving coil are wound by LITZ wires or stranded insulated enameled wires.
Compared with the prior art, the invention has the following beneficial effects: the invention can be used as an auxiliary coil of the transmitting coil of the electric automobile, and the anti-offset capability of the transmitting coil is improved. When the transmitting coil and the receiving coil have error deviation, the receiving coil can still receive more magnetic flux, and the transmission efficiency of the transmitting coil under the condition of deviation resistance is improved.
Drawings
FIG. 1 is a schematic representation of a Peano iteration curve.
FIG. 2 is a schematic diagram of a Piano typing coil structure.
FIG. 3(a) is a schematic diagram of one iteration of the Piano typing coil structure in a COMSOL simulation.
FIG. 3(b) is a schematic diagram of a two-iteration Piano typing coil structure in a COMSOL simulation.
FIG. 4 is a schematic diagram of the magnetic field direction of a quadratic Piano type coil structure.
FIG. 5(a) is a schematic diagram of a magnetic induction line of a one-time Piano type coil structure.
FIG. 5(b) is a schematic diagram of the magnetic induction lines of the double Piano typing coil structure.
FIG. 5(c) a schematic diagram of the magnetic induction lines of the DD coil structure.
Fig. 6(a) a schematic diagram of the magnetic induction lines at the position of the primary peano-split coil structure (1) in the COMSOL simulation.
Fig. 6(b) schematic diagram of the magnetic induction lines at the position of the quadratic peano-type coil structure (2) in the COMSOL simulation.
Fig. 6(c) schematic diagram of the magnetic induction lines at the position of the quadratic peano-type coil structure (3) in the COMSOL simulation.
Fig. 6(d) schematic diagram of the magnetic induction lines at the position of the quadratic peano-type coil structure (4) in the COMSOL simulation.
FIG. 7(a) is a schematic diagram of the magnetic field intensity of a section 2mm below the primary Peano-type coil structure in the COMSOL simulation.
FIG. 7(b) is a schematic diagram of the magnetic field intensity of a section 2mm below the quadratic Piano-type coil structure in COMSOL simulation.
Fig. 8(a) is a graph showing a change in magnetic flux received by the receiving coil of the primary peano-type coil structure in the case where the x-direction shift occurs.
Fig. 8(b) is a graph showing a change in magnetic flux received by the receiving coil of the secondary peano-split coil structure in the case where the x-direction shift occurs.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings. It should be noted that the described embodiments are for illustrative purposes only and are not limiting on the scope of the invention.
The invention provides a Piano typing coil structure applied to wireless power transmission. The LITZ wire is wound according to the mode shown in figure 1, and a primary PIANO parting coil structure, a secondary PIANO parting coil structure and the like can be obtained correspondingly. When a current flows in any direction, the total magnetic flux in the peano-split coil structure is 0, as shown in fig. 4. When error deviation occurs, the Piano type curve can compensate magnetic flux in a stepped mode, the descending amplitude of the magnetic flux received by the receiving coil is enabled to be more smooth, and the deviation resistance is improved. When the auxiliary coil is used as a transmitting coil, the Piano type coil structure does not work when the transmitting coil and the receiving coil are opposite or slightly deviated. When a large error deviation occurs between the transmitting coil and the receiving coil, the structure starts to work, so that the receiving coil can still receive large magnetic flux. When the transmitting coil and the receiving coil are continuously shifted, the drop amplitude of the receiving magnetic flux can be more gradually reduced.
The wireless power transmission coil structure device comprises a transmitting system and a receiving system, wherein the receiving coil transmits energy through resonance with the transmitting coil, and the resonance frequency of the receiving coil is consistent with that of the transmitting coil. Fig. 2 is used as an example of a specific application.
The transmitting system comprises a signal generator, a power amplifier, a primary side compensation circuit and a secondary Piano type coil structure.
The side length of the secondary Piano typing coil is 86 mm. The resonance frequency is 85KHz, and the capacitance compensation circuit and the secondary Piano type coil are connected in series to form the transmitting device. The receiving coil comprises a square receiving coil structure and a load. The side length of the square coil is 86 mm. The resonance frequency is 85KHz, and the capacitance compensation circuit is connected with the square coil in series to form the receiving coil. The secondary Piano type coil is wound according to a Piano curve construction mode according to a square with the side length of 90mm, and the final side length is 86 mm. The transmitting coil is a secondary Picino-parting coil which is wound in a Picino-curve construction mode, namely, a square is taken and divided into 9 equal small squares, then the small squares are connected by line segments in sequence from the square at the lower left corner to the square at the upper right corner; next, each small square is divided into 9 equal squares, and then the centers of the 9 squares are connected in the above manner to obtain a quadratic peano-type coil, as shown in fig. 3 (b). The receiving coil is a square coil, and the side length is 86 mm.
The circuit structure is shown in fig. 2. The lower left corner of the transmitting coil is electrified with clockwise current. The signal generator provides 85KHz signal, which is amplified by the power amplifier and transmitted to the transmitting coil by the capacitance compensation circuit. The receiving coil receives the electric energy sent by the transmitting coil and flows to the load through the capacitance compensation circuit.
As shown in fig. 5, the distribution of the magnetic induction lines of the peano-type coil and the distribution of the magnetic induction lines of the DD coil in the COMSOL simulation are shown. Compared with a DD coil, the magnetic induction lines of the secondary Piano type coil are denser, and the magnetic field at the center of the coil is denser and stronger.
As shown in fig. 6, the ZX section is a line direction of magnetic induction at the positions (2), (3) and (4) for the quadratic biyno coil.
FIG. 7(b) is a schematic diagram of the magnetic field intensity of a section 2mm below the two coil structures in the COMSOL simulation.
As shown in fig. 8(b), the change curve of the magnetic flux received by the receiving coil when the receiving coil is shifted in the x direction at a distance of 5mm above the transmitting coil in the COMSOL simulation is shown.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention according to the standard Piano curve, and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A Piano type coil transmission device applied to wireless power transmission is characterized by comprising:
the transmitting device: the transmitting coil is wound in a Piano type mode;
the receiving device: the receiving coil is wound in a square mode.
2. The device as claimed in claim 1, wherein the Piano type coil is wound in a Piano curve configuration, that is, a square is divided into 9 equal small squares, each small square is divided into 9 equal squares … …, finally N squares are obtained, then the centers of the small squares are connected by line segments in sequence from the square at the lower left corner to the square at the upper right corner, and the Piano type coil is formed.
3. The device as claimed in claim 1, wherein the square receiving coil is wound according to the size of the coil corresponding to the pionoid curve, the length is the side length of the pionoid curve coil corresponding to the number of times, and the width is the length of the multiple of X of the curve of the pionoid curve coil corresponding to the number of times.
4. The Peano-type coil transmission device applied to wireless power transmission of claim 1, wherein the peripheral circuits of the transmitting coil and the receiving coil are capacitance compensation circuits, and are respectively connected in series with the transmitting coil and the receiving coil.
5. The Peano-type coil transmission device applied to wireless power transmission of claim 1, wherein the transmitting coil is connected with a peripheral circuit, an impedance matching circuit, a power amplifier and a high frequency signal generator in sequence to form a transmitting system.
6. The Peano-type coil transmission device applied to wireless power transmission according to claim 1, wherein the transmitting coil is a Peano-type coil or a combination of a square coil and a Peano-type coil, and the receiving coil is a square coil; when the transmitting coil adopts the combination of the square coil and the peano parting coil, the square coil and the peano parting coil adopt a stacking mode, and the square coil is arranged above the peano parting coil.
7. The Peano-type coil transmission device for wireless power transmission as claimed in claim 1, wherein said receiving coil and the receiving side load together constitute a receiving system.
8. The Piano type coil transmission device applied to wireless power transmission according to claim 1, wherein the transmitting coil and the receiving coil are both wound by LITZ wire or multi-strand insulated enameled wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110554797.XA CN113300479A (en) | 2021-05-21 | 2021-05-21 | Be applied to wireless power transmission's peano parting coil transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110554797.XA CN113300479A (en) | 2021-05-21 | 2021-05-21 | Be applied to wireless power transmission's peano parting coil transmission device |
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| Publication Number | Publication Date |
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| CN113300479A true CN113300479A (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110554797.XA Pending CN113300479A (en) | 2021-05-21 | 2021-05-21 | Be applied to wireless power transmission's peano parting coil transmission device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903048A (en) * | 2014-03-28 | 2014-07-02 | 西安交通大学 | Folding Peano fractal anti-metallic ultrahigh frequency RFID electronic tag |
| CN104485755A (en) * | 2014-12-04 | 2015-04-01 | 珠海许继电气有限公司 | Multi-frequency resonance wireless electric power transmission system based on fractal planar coil |
| US20160013667A1 (en) * | 2013-03-27 | 2016-01-14 | Murata Manufacturing Co., Ltd. | Wireless power supply apparatus |
| CN110323842A (en) * | 2019-08-06 | 2019-10-11 | 中车唐山机车车辆有限公司 | A kind of square coil optimization structure applied to the transmission of high-power wireless electric energy |
-
2021
- 2021-05-21 CN CN202110554797.XA patent/CN113300479A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160013667A1 (en) * | 2013-03-27 | 2016-01-14 | Murata Manufacturing Co., Ltd. | Wireless power supply apparatus |
| CN103903048A (en) * | 2014-03-28 | 2014-07-02 | 西安交通大学 | Folding Peano fractal anti-metallic ultrahigh frequency RFID electronic tag |
| CN104485755A (en) * | 2014-12-04 | 2015-04-01 | 珠海许继电气有限公司 | Multi-frequency resonance wireless electric power transmission system based on fractal planar coil |
| CN110323842A (en) * | 2019-08-06 | 2019-10-11 | 中车唐山机车车辆有限公司 | A kind of square coil optimization structure applied to the transmission of high-power wireless electric energy |
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Application publication date: 20210824 |