CN114242414A - Wireless charging coil for two-wheeled electric vehicle - Google Patents
Wireless charging coil for two-wheeled electric vehicle Download PDFInfo
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- CN114242414A CN114242414A CN202111591596.3A CN202111591596A CN114242414A CN 114242414 A CN114242414 A CN 114242414A CN 202111591596 A CN202111591596 A CN 202111591596A CN 114242414 A CN114242414 A CN 114242414A
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- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 22
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005094 computer simulation Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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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
- H01F27/303—Clamping coils, windings or parts thereof together
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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
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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
- 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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- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a wireless charging coil for a two-wheeled electric vehicle, which comprises a receiving coil and a transmitting coil, wherein the receiving coil and the transmitting coil respectively comprise a hexagonal ferrite magnetic sheet, a DD-type coil and two hexagonal coils, the DD-type coil is arranged between the two hexagonal coils, and the three coils are connected in parallel. According to the invention, firstly, the hexagonal coils are more malleable compared with the circular coils, so that the cost can be saved, the coverage area can be as large as possible, secondly, the added middle layer DD type coil can enhance the anti-deflection capability of the transmitting coil and the receiving coil, and finally, the two hexagonal coils and the DD type coil are connected in parallel, so that larger transmission power can be provided, the two-wheeled electric vehicle can still stably transmit electric energy under the condition that the receiving coil and the transmitting coil have certain deflection, and the three coils are combined in parallel, so that the two-wheeled electric vehicle has higher charging efficiency and higher charging speed, and the charging time is saved.
Description
Technical Field
The invention relates to the technical field of wireless charging of two-wheeled electric vehicles, in particular to a wireless charging coil for a two-wheeled electric vehicle.
Background
At present, the two-wheeled electric vehicle is an economic and convenient vehicle, is a choice for a plurality of families to go out in a short distance, but is convenient, because the electric bicycle is not charged in a standard way and the technical problem is caused, the fire accidents of the electric bicycle are frequent, the great loss is caused to the life and property safety of people, the social attention is caused, the service life of the traditional two-wheeled electric vehicle is influenced by frequent plugging and pulling of a power plug, the phenomenon of poor contact of the plug and the generation of electric leakage or ignition can also be caused, thereby causing fire, compared with the traditional wired charging mode, the wireless charging operation is simpler, the working process is safer, in a wireless power transmission system, a coupling coil is divided into a transmitting coil and a receiving coil, which transfer energy through magnetic field coupling, and the conventional wireless charging coil has a circular or rectangular structure.
As the prior publication numbers: CN112277670A, entitled "intelligent wireless charging device for electric bicycle", discloses a method for charging an intelligent wireless charging device for electric bicycle, in which a receiving coil is placed on an electric bicycle, and a transmitting coil is placed on the ground, wherein the receiving coil and the transmitting coil are both single-layer circular coils.
Disclosure of Invention
In order to solve the technical problems mentioned in the background art, a wireless charging coil for a two-wheeled electric vehicle is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a wireless charging coil for two-wheeled electric motor car, includes receiving coil and transmitting coil, receiving coil and transmitting coil all include hexagon ferrite magnetic sheet, DD type coil and two hexagon coils, DD type coil sets up between two hexagon coils, and the three coils is parallelly connected, DD type coil both sides side and hexagon coil both sides side coincide on the vertical direction, and DD type coil's horizontal length d1 and hexagon coil a, b interval between two points equals, DD type coil's longitudinal length d2 equals with hexagon coil's unilateral length s, receiving coil sets up on two-wheeled electric motor car, and transmitting coil sets up on the wireless charging system on ground, transmit energy through magnetic field coupling between receiving coil and the transmitting coil to realize wireless charging system to two-wheeled electric motor car's the purpose of charging.
As a further description of the above technical solution:
the transmitting coil comprises a hexagonal ferrite magnetic sheet C1, a hexagonal coil L2, a DD-type coil L4 and a hexagonal coil L6, and the receiving coil comprises a hexagonal ferrite magnetic sheet C2, a hexagonal coil L1, a DD-type coil L3 and a hexagonal coil L5.
As a further description of the above technical solution:
the hexagonal coil L2, the DD-type coil L4, the hexagonal coil L6 and the hexagonal coil L1, the DD-type coil L3 and the hexagonal coil L5 are arranged between the hexagonal ferrite magnetic sheet C1 and the hexagonal ferrite magnetic sheet C2.
As a further description of the above technical solution:
the distance between the hexagonal ferrite sheet C1 and the hexagonal coil L2, and the distance between the hexagonal ferrite sheet C2 and the hexagonal coil L1 are at least 3 mm.
As a further description of the above technical solution:
the distance between the hexagonal coil L2, the hexagonal coil L6 and the DD-type coil L4, and the distance between the hexagonal coil L1, the hexagonal coil L3 and the DD-type coil L5 are at least 2 mm.
As a further description of the above technical solution:
the number of turns of the hexagonal coil L2, the DD-type coil L4, the hexagonal coil L6, the hexagonal coil L1, the DD-type coil L3 and the hexagonal coil L5 is at least 15.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: firstly, the hexagon coil has more ductility compared with the circular coil, can save the cost, also can make the coverage area as big as possible, secondly, the anti skew ability of transmitting coil and receiving coil can be strengthened to the intermediate level DD type coil that increases, finally, two hexagon coils and a DD type coil are parallelly connected, can provide bigger transmission power, make two-wheeled electric motor car still can stably transmit the electric energy at receiving coil and transmitting coil under the condition that has certain skew, and the parallelly connected combination of three coils, make two-wheeled electric motor car's charge efficiency higher, charge speed is faster, save charge time.
Drawings
Fig. 1 is a schematic structural diagram illustrating a wireless charging coil for a two-wheeled electric vehicle according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a structure of a receiving coil of a wireless charging coil for a two-wheeled electric vehicle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram illustrating a transmitting coil of a wireless charging coil for a two-wheeled electric vehicle according to an embodiment of the present invention;
figure 4 shows a schematic of the structure of a single coil type wireless charging coil;
figure 5 shows a static and dynamic simulation test data line graph for a single coil type wireless charging coil;
figure 6 illustrates a line graph of static and dynamic simulation test data for a wireless charging coil for a two-wheeled electric vehicle, provided in accordance with an embodiment of the present invention;
fig. 7 illustrates a three-coil parallel structure circuit topology diagram of a wireless charging coil for a two-wheeled electric vehicle according to an embodiment of the present invention;
fig. 8 is a schematic top view illustrating a DD-type coil of a wireless charging coil for a two-wheeled electric vehicle according to an embodiment of the present invention.
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.
Example one
Referring to fig. 1-8, the present invention provides a technical solution: a wireless charging coil for a two-wheeled electric vehicle comprises a receiving coil and a transmitting coil, wherein the receiving coil and the transmitting coil respectively comprise a hexagonal ferrite magnetic sheet, a DD-shaped coil and two hexagonal coils, the DD-shaped coil is arranged between the two hexagonal coils, the three coils are connected in parallel, the side edges at both sides of the DD type coil are superposed with the side edges at both sides of the hexagonal coil in the vertical direction, the transverse length d1 of the DD-type coil is equal to the distance between two points of the hexagonal coils a and b, the longitudinal length d2 of the DD-type coil is equal to the length s of a single side of the hexagonal coil, the DD-type coil is a rectangular coil embedded in the hexagonal coil, the receiving coil is arranged on the two-wheeled electric vehicle, the transmitting coil is arranged on a wireless charging system on the ground, the receiving coil and the transmitting coil are coupled through a magnetic field to transfer energy, so that the purpose of charging the two-wheeled electric vehicle by the wireless charging system is achieved;
firstly, the hexagon coil has more ductility compared with the circular coil, can save the cost, also can make the coverage area as big as possible, secondly, the anti skew ability of transmitting coil and receiving coil can be strengthened to the intermediate level DD type coil that increases, finally, two hexagon coils and a DD type coil are parallelly connected, can provide bigger transmission power, make two-wheeled electric motor car still can stably transmit the electric energy at receiving coil and transmitting coil under the condition that has certain skew, and the parallelly connected combination of three coils, make two-wheeled electric motor car's charge efficiency higher, charge speed is faster, save charge time.
When the positions of the receiving coil and the transmitting coil are opposite, namely the coupling factor is maximum, static and dynamic simulation tests of the round single-layer coil and the coil are carried out, the transmitting coil and the receiving coil of the round single-layer coil are respectively composed of a magnetic sheet C3, a coil L7, a magnetic sheet C4 and a coil L8, and the test results are shown in fig. 5 and fig. 6.
Referring to fig. 1-3, the transmitting coil includes a hexagonal ferrite sheet C1, a hexagonal coil L2, a DD-type coil L4, and a hexagonal coil L6, the DD-type coil L4 is disposed between the hexagonal coil L2 and the hexagonal coil L6, the receiving coil includes a hexagonal ferrite sheet C2, a hexagonal coil L1, a DD-type coil L3, and a hexagonal coil L5, the DD-type coil L3 is disposed between the hexagonal coil L1 and the hexagonal coil L5, the hexagonal coil L2, the DD-type coil L4, the hexagonal coil L6, the hexagonal coil L1, the DD-type coil L3, and the hexagonal coil L5 are disposed between the hexagonal ferrite sheet C1 and the hexagonal ferrite sheet C2.
Referring to fig. 1-3, the distance between hexagonal ferrite chip C1 and hexagonal coil L2, and between hexagonal ferrite chip C2 and hexagonal coil L1 is at least 3mm, the distance between hexagonal coil L2, hexagonal coil L6 and DD-type coil L4, and the distance between hexagonal coil L1, hexagonal coil L3 and DD-type coil L5 is at least 2mm, and the number of turns of hexagonal coil L2, DD-type coil L4, hexagonal coil L6, hexagonal coil L1, DD-type coil L3, and hexagonal coil L5 is at least 15 turns.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A wireless charging coil for a two-wheeled electric vehicle is characterized by comprising a receiving coil and a transmitting coil, the receiving coil and the transmitting coil respectively comprise hexagonal ferrite magnetic sheets, a DD-type coil and two hexagonal coils, the DD-type coil is arranged between the two hexagonal coils, the three coils are connected in parallel, the side edges at both sides of the DD type coil are superposed with the side edges at both sides of the hexagonal coil in the vertical direction, the transverse length d1 of the DD type coil is equal to the distance between two points of the hexagonal coils a and b, the longitudinal length d2 of the DD type coil is equal to the single-side length s of the hexagonal coil, the receiving coil is arranged on the two-wheeled electric vehicle, the transmitting coil is arranged on a wireless charging system on the ground, energy is transmitted between the receiving coil and the transmitting coil through magnetic field coupling, so that the purpose of charging the two-wheeled electric vehicle by the wireless charging system is achieved.
2. A wireless charging coil for a two-wheeled electric vehicle according to claim 1, wherein said transmitting coil comprises a hexagonal ferrite magnetic sheet C1, a hexagonal coil L2, a DD-type coil L4 and a hexagonal coil L6, and said receiving coil comprises a hexagonal ferrite magnetic sheet C2, a hexagonal coil L1, a DD-type coil L3 and a hexagonal coil L5.
3. A wireless charging coil for a two-wheeled electric vehicle according to claim 2, wherein said hexagonal coil L2, DD type coil L4, hexagonal coil L6 and hexagonal coil L1, DD type coil L3, hexagonal coil L5 are disposed between hexagonal ferrite magnetic sheet C1 and hexagonal ferrite magnetic sheet C2.
4. A wireless charging coil for a two-wheeled electric vehicle according to claim 3, wherein the spacing between hexagonal ferrite tiles C1 and hexagonal coil L2, and between hexagonal ferrite tiles C2 and hexagonal coil L1 is at least 3 mm.
5. A wireless charging coil for a two-wheeled electric vehicle according to claim 4, wherein the hexagonal coil L2, hexagonal coil L6 and DD-type coil L4, and the hexagonal coil L1, hexagonal coil L3 and DD-type coil L5 are spaced apart by at least 2 mm.
6. A wireless charging coil for a two-wheeled electric vehicle according to claim 5, wherein said hexagonal coil L2, DD-type coil L4, hexagonal coil L6, hexagonal coil L1, DD-type coil L3 and hexagonal coil L5 have at least 15 coil turns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111591596.3A CN114242414A (en) | 2021-12-23 | 2021-12-23 | Wireless charging coil for two-wheeled electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111591596.3A CN114242414A (en) | 2021-12-23 | 2021-12-23 | Wireless charging coil for two-wheeled electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114242414A true CN114242414A (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111591596.3A Pending CN114242414A (en) | 2021-12-23 | 2021-12-23 | Wireless charging coil for two-wheeled electric vehicle |
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| Country | Link |
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| CN (1) | CN114242414A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160241061A1 (en) * | 2015-02-17 | 2016-08-18 | Qualcomm Incorporated | Clover leaf and butterfly coil structures for flat wireless coupling profiles in wireless power transfer applications |
| CN110581609A (en) * | 2019-09-18 | 2019-12-17 | 武汉理工大学 | Wireless power transmission magnetic coupling system of electric automobile |
| CN111756121A (en) * | 2020-07-07 | 2020-10-09 | 国网浙江省电力有限公司宁波供电公司 | High-power wireless power supply coupling mechanism and parameter design method thereof |
| CN111987811A (en) * | 2020-07-28 | 2020-11-24 | 东北林业大学 | Three-energy-transfer channel type wireless charging system based on orthogonal laminated magnetic coupling mechanism |
| CN112092652A (en) * | 2020-09-11 | 2020-12-18 | 浙江大学 | Sectional type dynamic wireless charging magnetic coupling system of electric automobile |
| CN112277670A (en) * | 2020-11-12 | 2021-01-29 | 武汉理工大学 | Intelligent wireless charging device of electric bicycle |
| CN112564309A (en) * | 2020-11-30 | 2021-03-26 | 西安交通大学 | Compact wireless charging system based on multi-coil decoupling integration |
| CN112865327A (en) * | 2019-11-27 | 2021-05-28 | 哈尔滨工业大学 | Double-energy-transfer channel type high-power-density magnetic coupling mechanism based on overlapped coils |
| CN113474858A (en) * | 2019-02-15 | 2021-10-01 | 犀能新能源科技私人有限公司 | Wireless power transmission based on electromagnetic induction |
-
2021
- 2021-12-23 CN CN202111591596.3A patent/CN114242414A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160241061A1 (en) * | 2015-02-17 | 2016-08-18 | Qualcomm Incorporated | Clover leaf and butterfly coil structures for flat wireless coupling profiles in wireless power transfer applications |
| CN113474858A (en) * | 2019-02-15 | 2021-10-01 | 犀能新能源科技私人有限公司 | Wireless power transmission based on electromagnetic induction |
| CN110581609A (en) * | 2019-09-18 | 2019-12-17 | 武汉理工大学 | Wireless power transmission magnetic coupling system of electric automobile |
| CN112865327A (en) * | 2019-11-27 | 2021-05-28 | 哈尔滨工业大学 | Double-energy-transfer channel type high-power-density magnetic coupling mechanism based on overlapped coils |
| CN111756121A (en) * | 2020-07-07 | 2020-10-09 | 国网浙江省电力有限公司宁波供电公司 | High-power wireless power supply coupling mechanism and parameter design method thereof |
| CN111987811A (en) * | 2020-07-28 | 2020-11-24 | 东北林业大学 | Three-energy-transfer channel type wireless charging system based on orthogonal laminated magnetic coupling mechanism |
| CN112092652A (en) * | 2020-09-11 | 2020-12-18 | 浙江大学 | Sectional type dynamic wireless charging magnetic coupling system of electric automobile |
| CN112277670A (en) * | 2020-11-12 | 2021-01-29 | 武汉理工大学 | Intelligent wireless charging device of electric bicycle |
| CN112564309A (en) * | 2020-11-30 | 2021-03-26 | 西安交通大学 | Compact wireless charging system based on multi-coil decoupling integration |
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