CN110867314A - Wireless charging orthogonal coil structure of electric automobile - Google Patents
Wireless charging orthogonal coil structure of electric automobile Download PDFInfo
- Publication number
- CN110867314A CN110867314A CN201911149365.XA CN201911149365A CN110867314A CN 110867314 A CN110867314 A CN 110867314A CN 201911149365 A CN201911149365 A CN 201911149365A CN 110867314 A CN110867314 A CN 110867314A
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- Prior art keywords
- coil
- wireless charging
- shaped
- orthogonal
- magnetic substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
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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
- 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
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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
- 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
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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
Abstract
The patent discloses an electric automobile wireless quadrature formula coil structure that charges, this wireless charging coil include transmitting coil and receive coil. The transmitting coil module comprises a transmitting coil and a transmitting coil iron core, wherein the transmitting coil is formed by two D-shaped coils and a spiral coil in an orthogonal mode, and the transmitting coil iron core is formed by splicing strip-shaped ferrites into a rectangular magnetic substrate. The receiving coil module also includes two D-shaped coils, a rectangular magnetic substrate. The two coils are of a symmetrical structure, the transmitting coil is installed on the ground, and the receiving coil is installed under the automobile chassis and can be interchanged. The advantages of D shape coil and spiral coil have been synthesized to this patent quadrature formula coil structure, can improve the coil coupling coefficient of coil, anti skew characteristic, improve wireless charging system's robustness promptly.
Description
Technical Field
The patent relates to a wireless orthogonal coil structure that charges of electric automobile belongs to wireless charging technical field.
Background
At present, countries in the world face the shortage of traditional fossil energy and the increasingly worsened environmental problem, and clean energy is favored by people. Electric vehicles have gained wide social attention as a new and environmentally friendly vehicle. And traditional electric automobile charges mainly through filling electric pile and charges, has the equipment easy wearing and tearing, ageing, and the charging environment is unsafe, the low scheduling problem of operating efficiency that charges.
The conventional wireless charging of the electric automobile mainly adopts a pair of symmetrical coupling coils for energy transmission, and the commonly used coils have structures such as a disc shape, a DD shape, a solenoid shape and the like. The existing coil structure has the problems of low coupling coefficient and poor anti-offset performance. Therefore, the invention discloses a wireless charging orthogonal coil structure of an electric automobile, and the coupling coefficient and the anti-offset performance of the coil are improved.
Disclosure of Invention
The patent provides an electric automobile wireless charging orthogonal coil structure, mainly is the coupling coefficient and the anti skew performance that improve the coil.
In order to achieve the purpose, the technical scheme of the patent comprises the following steps:
the utility model provides a wireless quadrature formula coil structure that charges which characterized in that: the rectangular ferrite is used as a magnetic substrate; the magnetic substrate is provided with two coils, one coil is a D-shaped coil 1, one end of the D-shaped coil is an external port 1, and the other end of the D-shaped coil is connected with a coil 2 through a port 2; the coil 2 is also a D-shaped coil, and the other end of the D-shaped coil is upwards connected with the coil 3; the coil 3 is a spiral coil and wraps the coil 1, the coil 2 and the magnetic substrate, and the port 4 is an external port 2.
Further, the coil 1 and the coil 2 are closely attached to the magnetic substrate, and the coil 1 and the coil 2 are symmetrically distributed about the center line 1.
Further, the coil 3 is orthogonal to and located above the coil 1 and the coil 2. The coil 3 is spirally wound on the magnetic substrate and is perpendicular to the central line 1.
Further, the coil 1, the coil 2 and the coil 3 are all formed by winding litz wires.
Further, the rectangular magnetic substrate is formed by splicing strip-shaped ferrites.
A wireless charging orthogonal coil structure comprises a transmitting coil and a receiving coil, wherein the transmitting coil and the receiving coil both adopt the orthogonal coil structure.
This patent advantage: the advantages of the DD-shaped coil and the solenoid-shaped coil are combined, and the coupling coefficient and the anti-offset performance of the coil are improved.
Drawings
Fig. 1 is an overall schematic diagram of a wireless charging quadrature coil structure of an electric vehicle according to the present disclosure;
description of the symbols:
in the figure, 1 is a magnetic substrate, 2 is a coil 1, 3 is a coil 2, 4 is a coil 3, 5 is a port 1, 6 is a port 2, 7 is a port 3, 8 is a port 4, 9 is a center line 1.
Detailed Description
The following detailed description of the patent refers to the accompanying drawings in which:
the structure of the wireless charging orthogonal coil structure for the electric automobile is shown in figure 1 and is divided into a transmitting coil and a receiving coil, the transmitting coil and the receiving coil are symmetrical and have the same parameters, the wireless charging orthogonal coil structure comprises a rectangular magnetic substrate (1), coils 1(2), 2(3) and 3(4), the transmitting coil is installed on the ground, and the receiving coil is installed on an automobile chassis.
The magnetic substrate (1) is a rectangular iron core spliced by ferrite. The magnetic leakage can be reduced, and the coupling coefficient can be enhanced.
The coil 1(2) is a D-shaped coil wound by litz wires, clings to the magnetic substrate (1), and the port 1(5) is externally connected with a circuit. The skin effect can be reduced, the magnetic leakage is reduced, and the anti-offset performance is enhanced.
The coil 2(3) is a D-shaped coil wound by litz wires, clings to the magnetic substrate (1), and a port 4(5) is externally connected with a circuit. The skin effect can be reduced, the magnetic leakage is reduced, and the anti-offset performance is enhanced.
The coils 1(2), 2(3) are connected together by ports 2 (6).
The coil 3(4) is a solenoid-shaped coil wound by litz wires along the magnetic substrate (1), is orthogonal to the coil 1(2) and the coil 2(3) and is positioned above the coil 1(2) and the coil 2(3), and a coil port 4(8) is externally connected with a circuit. And the magnetic leakage is reduced, and the offset resistance is enhanced.
Claims (6)
1. The utility model provides an electric automobile wireless quadrature formula coil structure that charges which characterized in that: a rectangular ferrite as a magnetic substrate (1); the magnetic substrate (1) is provided with two coils, one coil is a D-shaped coil 1(2), one end of the D-shaped coil is an external port 1(5), and the other end of the D-shaped coil is connected with the coil 2(3) through a port 2 (6); the coil 2(3) is also a D-shaped coil, and the other end (7) of the D-shaped coil is upwards connected with the coil 3 (4); the coil 3(4) is a solenoid-shaped coil which wraps the coil 1(2), the coil 2(3) and the magnetic substrate (1), and the port 4(8) is an external port 2.
2. The wireless charging orthogonal coil structure of the electric vehicle according to claim 1, wherein the coil 1(2), the coil 2(3) are closely attached to the magnetic substrate (1), and the coil 1(2) and the coil 2(3) are symmetrically distributed about the center line 1 (9).
3. The wireless charging orthogonal coil structure of the electric vehicle as claimed in claim 1, wherein the coil 3(4) is orthogonal to the coil 1(2), the coil 2(3), and is disposed thereon, and the coil 3(4) is spirally wound on the magnetic substrate (1) and is perpendicular to the center line 1 (9).
4. The wireless charging orthogonal coil structure of the electric vehicle as claimed in claim 1, wherein the coils 1(2), 2(3) and 3(4) are wound by litz wire.
5. The wireless charging orthogonal coil structure of the electric automobile according to claim 1, characterized in that the magnetic substrate (1) is formed by splicing strip-shaped ferrites.
6. A wireless charging orthogonal coil structure of an electric automobile comprises a transmitting coil and a receiving coil, and is characterized in that the transmitting coil and the receiving coil are in the wireless charging orthogonal coil structure of the electric automobile according to any one of claims 1-5, and the receiving coil and the transmitting coil are the same in structure and parameters and can be replaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911149365.XA CN110867314A (en) | 2019-11-21 | 2019-11-21 | Wireless charging orthogonal coil structure of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911149365.XA CN110867314A (en) | 2019-11-21 | 2019-11-21 | Wireless charging orthogonal coil structure of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110867314A true CN110867314A (en) | 2020-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911149365.XA Pending CN110867314A (en) | 2019-11-21 | 2019-11-21 | Wireless charging orthogonal coil structure of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110867314A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111591153A (en) * | 2020-04-30 | 2020-08-28 | 南京理工大学 | Self-adaptive configuration wireless charging system for parking lot and planning method |
| CN113053623A (en) * | 2021-03-18 | 2021-06-29 | 哈尔滨工业大学 | DD-PS strong anti-offset loose coupling transformer and parameter determination method thereof |
-
2019
- 2019-11-21 CN CN201911149365.XA patent/CN110867314A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111591153A (en) * | 2020-04-30 | 2020-08-28 | 南京理工大学 | Self-adaptive configuration wireless charging system for parking lot and planning method |
| CN113053623A (en) * | 2021-03-18 | 2021-06-29 | 哈尔滨工业大学 | DD-PS strong anti-offset loose coupling transformer and parameter determination method thereof |
| CN113053623B (en) * | 2021-03-18 | 2022-06-07 | 哈尔滨工业大学 | DD-PS strong anti-offset loose coupling transformer and parameter determination method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200306 |
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| WD01 | Invention patent application deemed withdrawn after publication |