CN108878111B - Overlapping wireless charging coil and electric energy transmission system - Google Patents
Overlapping wireless charging coil and electric energy transmission system Download PDFInfo
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- CN108878111B CN108878111B CN201810574055.1A CN201810574055A CN108878111B CN 108878111 B CN108878111 B CN 108878111B CN 201810574055 A CN201810574055 A CN 201810574055A CN 108878111 B CN108878111 B CN 108878111B
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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
- H01F27/24—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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
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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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Abstract
The invention discloses an overlapped wireless charging coil, which comprises a transmitting end and a receiving end, wherein the transmitting end comprises a transmitting end magnetic shielding layer, a transmitting end magnetic conduction layer, a transmitting end coil first layer, a transmitting end supporting layer and a transmitting end coil second layer; the receiving end comprises a receiving end coil second layer, a receiving end supporting layer, a receiving end coil first layer, a receiving end magnetic conduction layer and a receiving end magnetic shielding layer. The electric energy transmission system of the overlapped wireless charging coil comprises a transmitting end circuit and a receiving end circuit; the transmitting end circuit comprises a direct current power supply, a high-frequency inverter circuit, a transmitting end compensation circuit and a transmitting end coil; the receiving end circuit comprises a receiving end coil, a receiving end compensation circuit, a rectification filter circuit and a load. The overlapped wireless charging coil and the electric energy transmission system thereof disclosed by the invention improve the energy transmission power and efficiency, have smaller horizontal occupied area and can reduce the harmful influence of a high-frequency magnetic field on the outside.
Description
Technical Field
The invention relates to the technical field of wireless power transmission, in particular to an overlapped wireless charging coil and a power transmission system.
Background
The wireless energy transmission technology is an emerging technology, and refers to the long-distance transmission of energy by using an electromagnetic field under the condition that no physical contact occurs. Compared with the conduction type energy transmission technology, the wireless energy transmission technology has the advantages of convenience in work, high safety, space saving and the like. The wireless energy transmission technology is applied to the field of electric automobiles, can partially solve the problems of overlarge capacity, overhigh cost and the like of a vehicle-mounted battery, and can powerfully promote the popularization of the electric automobiles. Through laying transmitting terminal coil in the underground, electric automobile chassis assembly receiving terminal coil, the driver only need stop the car to the position of charging and can charge.
At present, a magnetic coupling type power transmission technology realized by a pair of coupling coils is a mainstream wireless power transmission scheme, and is widely applied to the field of electric automobiles. However, the gap between the transmitting end coil and the receiving end coil is large, the coupling coefficient is low, and in order to improve the energy transmission efficiency, the coupling coefficient between the coils at two sides needs to be improved. The shape and size of the coil directly influence the coupling coefficient between the coils, and the current commonly used coil structures comprise a circular coil, a duplex rectangular coil, a solenoid coil and the like, so that the leakage inductance is large, the coupling coefficient is low, and the energy transmission efficiency is low. In addition, in the process of parking and charging the electric automobile, a receiving end coil installed on an automobile chassis and a transmitting end coil on the ground are not easy to be aligned strictly, and the occurrence of position errors can cause serious reduction of energy transmission power and efficiency.
Therefore, those skilled in the art are devoted to develop an overlapped wireless charging coil and an electric energy transmission system, in which two duplex coils are overlapped at a certain angle and connected in series to form a transmitting end coil and a receiving end coil, so that the coupling coefficient between the transmitting end coil and the receiving end coil can be improved, and when the transmitting end coil and the receiving end coil are not accurately aligned, a higher coupling coefficient and an energy transmission efficiency can be obtained by using the scheme.
Disclosure of Invention
In order to achieve the above object, according to an aspect of the present invention, there is provided an overlapped wireless charging coil, including a transmitting end and a receiving end, wherein the transmitting end includes a transmitting end magnetic shielding layer, a transmitting end magnetic conductive layer, a transmitting end coil first layer, a transmitting end supporting layer, and a transmitting end coil second layer; the receiving end comprises a receiving end coil second layer, a receiving end supporting layer, a receiving end coil first layer, a receiving end magnetic conduction layer and a receiving end magnetic shielding layer.
Further, the transmitting end magnetic conduction layer is fixed on the upper surface of the transmitting end magnetic shielding layer; the first layer of the transmitting end coil and the second layer of the transmitting end coil are fixed on the transmitting end supporting layer; the first layer of the transmitting end coil and the second layer of the transmitting end coil are connected in series to form a transmitting end coil; the second receiving end coil layer and the first receiving end coil layer are fixed on the receiving end supporting layer; the second layer of the receiving end coil and the first layer of the receiving end coil are connected in series to form a receiving end coil; the receiving end magnetic conduction layer is fixed on the lower surface of the receiving end magnetic shielding layer.
Further, the outline range of the transmitting end supporting layer is not less than the outline envelope range of the first layer of the transmitting end coil and the second layer of the transmitting end coil; the outline range of the receiving end supporting layer is not less than the outline envelope range of the first layer of the receiving end coil and the second layer of the receiving end coil.
Further, the first layer of the transmitting end coil, the second layer of the transmitting end coil, the first layer of the receiving end coil and the second layer of the receiving end coil are wound according to the shape of 8 to form a duplex structure; the first layer of the transmitting end coil and the second layer of the transmitting end coil are arranged in a 90-degree crossed mode, wherein the 90-degree mode means that the long edge of the first layer of the transmitting end coil is perpendicular to the long edge of the second layer of the transmitting end coil; the receiving end coil first layer and the receiving end coil second layer are arranged in a 90-degree crossed mode, and the 90-degree mode means that the long edge of the receiving end coil first layer is perpendicular to the long edge of the receiving end coil second layer.
Further, the geometric centers of the first layer of the transmitting end coil and the second layer of the transmitting end coil are on the same vertical line; the geometric centers of the first layer of the receiving end coil and the second layer of the receiving end coil are on the same vertical line; the long edge of the first layer of the transmitting end coil is arranged in parallel with the long edge of the first layer of the receiving end coil; and the long edge of the second layer of the transmitting end coil is arranged in parallel with the long edge of the second layer of the receiving end coil.
Further, the geometric center of the transmitting end coil and the geometric center of the receiving end coil are on the same vertical line; the long side direction of the first layer of the transmitting end coil, the long side direction of the second layer of the transmitting end coil, the long side direction of the first layer of the receiving end coil and the long side direction of the second layer of the receiving end coil are all placed at 45 degrees with an X axis and a Y axis, and the X axis and the Y axis refer to two mutually perpendicular directions which are aligned with a higher position to be expected to obtain a fault tolerance and are parallel to the direction of the transmitting end coil.
Furthermore, the transmitting end magnetic conduction layer and the receiving end magnetic conduction layer are both composed of power ferrites, and the cross sections of the power ferrites are rectangular; the transmitting end magnetic shielding layer and the receiving end magnetic shielding layer are made of aluminum plates.
Furthermore, the power ferrites of the transmitting end magnetic conduction layer and the receiving end magnetic conduction layer are arranged in a grid shape, and the transverse direction and the longitudinal direction of a power ferrite grid forming the transmitting end magnetic conduction layer are respectively parallel to the long edge direction of the first layer of the transmitting end coil and the long edge direction of the second layer of the transmitting end coil; the transverse direction and the longitudinal direction of a power ferrite grid forming the receiving end magnetic conduction layer are respectively parallel to the long edge direction of the first layer of the receiving end coil and the long edge direction of the second layer of the receiving end coil; the power ferrite forming the transmitting end magnetic conduction layer and the power ferrite forming the receiving end magnetic conduction layer are arranged at equal intervals along the transverse direction and the longitudinal direction.
According to another aspect of the present invention, there is also provided an electric power transmission system including the overlapped wireless charging coil as described above, including a transmitting end circuit and a receiving end circuit; the transmitting end circuit comprises a direct current power supply, a high-frequency inverter circuit, a transmitting end compensation circuit and a transmitting end coil; the receiving end circuit comprises a receiving end coil, a receiving end compensation circuit, a rectification filter circuit and a load.
Furthermore, the transmitting end compensation circuit and the receiving end compensation circuit are both formed by connecting a compensation inductor and a compensation capacitor.
The invention provides an overlapped wireless charging coil and an electric energy transmission system thereof, which improve energy transmission power and efficiency from three aspects: firstly, the winding mode of the transmitting end coil and the receiving end coil effectively improves the coupling coefficient between the transmitting end coil and the receiving end coil; secondly, the power ferrites are arranged in a grid shape, so that the magnetic fields generated by the transmitting end coil and the receiving end coil are guided, and the coupling degree of the transmitting end coil and the receiving end coil is enhanced; and thirdly, the assembly position relation is better, and the influence of alignment position errors in two main directions on transmission power and efficiency can be reduced. And the winding mode effectively utilizes the space in the vertical direction and has smaller horizontal occupied area. The transmitting end magnetic shielding layer and the receiving end magnetic shielding layer made of aluminum plates can effectively shield magnetic field radiation, and the harmful influence of a high-frequency magnetic field on the outside is reduced.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic perspective view illustrating a preferred embodiment of an overlapping wireless charging coil according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a power transmission system with overlapping wireless charging coils according to the present invention;
FIG. 3 is a schematic diagram of the winding pattern and current flow direction of the transmitting end coil of the preferred embodiment of the overlapping wireless charging coil provided by the present invention;
fig. 4 is a schematic diagram of a power ferrite grid arrangement of a transmitting end magnetic conductive layer of a preferred embodiment of an overlapping wireless charging coil provided in the present invention;
FIG. 5 is a schematic diagram of the winding pattern and current flow direction of the receiving end coil of the preferred embodiment of the overlapping wireless charging coil according to the present invention;
fig. 6 is a schematic diagram of a power ferrite grid arrangement of a receiving end magnetic conductive layer of a preferred embodiment of an overlapping wireless charging coil provided in the present invention;
the transmitter comprises a 1-transmitting end magnetic shielding layer, a 2-transmitting end magnetic conduction layer, a 3-transmitting end coil first layer, a 4-transmitting end supporting layer, a 5-transmitting end coil second layer, a 6-receiving end coil second layer, a 7-receiving end supporting layer, an 8-receiving end coil first layer, a 9-receiving end magnetic conduction layer, a 10-receiving end magnetic shielding layer, a 101-direct current power supply, a 102-high-frequency inverter circuit, a 103-transmitting end compensation circuit, a 104-transmitting end coil, a 105-receiving end coil, a 106-receiving end compensation circuit, a 107-rectifying filter circuit and a 108-load.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
Example 1
Fig. 1 is a schematic perspective view illustrating a preferred embodiment of an overlapping wireless charging coil according to the present invention, and as shown in fig. 1, the preferred embodiment of the overlapping wireless charging coil according to the present invention includes a transmitting end and a receiving end, wherein the transmitting end sequentially includes five layers, from bottom to top, of a transmitting end magnetic shielding layer 1, a transmitting end magnetic conductive layer 2, a transmitting end coil first layer 3, a transmitting end supporting layer 4, and a transmitting end coil second layer 5; the receiving end is sequentially provided with a receiving end coil second layer 6, a receiving end supporting layer 7, a receiving end coil first layer 8, a receiving end magnetic conduction layer 9 and a receiving end magnetic shielding layer 10 from bottom to top.
The transmitting end supporting layer 4 and the receiving end supporting layer 7 adopt non-magnetic materials. The first layer 3 of the transmitting end coil is tightly fixed on the lower surface of the transmitting end supporting layer 4, and the second layer 5 of the transmitting end coil is tightly fixed on the upper surface of the transmitting end supporting layer 4. The first receiving end coil layer 8 is tightly fixed on the upper surface of the receiving end supporting layer 7, and the second receiving end coil layer 6 is tightly fixed on the lower surface of the receiving end supporting layer 7. The outline range of the transmitting end supporting layer 4 is not less than the outline envelope range of the transmitting end coil first layer 3 and the transmitting end coil second layer 5; the outline range of the receiving end supporting layer 7 is not less than the outline envelope range of the receiving end coil first layer 8 and the receiving end coil second layer 6.
Fig. 2 is a schematic diagram of a preferred embodiment of an electric energy transmission system of an overlapped wireless charging coil provided by the present invention, fig. 3 is a schematic diagram of a winding manner and a current flow direction of a transmitting end coil of a preferred embodiment of an overlapped wireless charging coil provided by the present invention, fig. 5 is a schematic diagram of a winding manner and a current flow direction of a receiving end coil of a preferred embodiment of an overlapped wireless charging coil provided by the present invention, as shown in fig. 1, fig. 2, fig. 3 and fig. 5, a transmitting end coil first layer 3 and a transmitting end coil second layer 5 are connected in series to form a transmitting end coil 104, and a receiving end coil first layer 8 and a receiving end coil second layer 6 are connected in series to form a receiving end coil 105. The first layer 3 of the transmitting end coil, the second layer 5 of the transmitting end coil, the first layer 8 of the receiving end coil and the second layer 6 of the receiving end coil are wound according to the shape of 8 to form a duplex structure. The first layer 3 and the second layer 5 of the transmitting end coil have the same number of winding turns and the same winding range, and the first layer 8 and the second layer 6 of the receiving end coil have the same number of winding turns and the same winding range. The first transmitting end coil layer 3 and the second transmitting end coil layer 5 are arranged in a 90-degree crossed mode, the first receiving end coil layer 8 and the second receiving end coil layer 6 are arranged in a 90-degree crossed mode, and the 90-degree mode means that the long edge of the first receiving end coil layer is perpendicular to the long edge of the second receiving end coil layer. The geometric centers of the first layer 3 of the transmitting end coil and the second layer 5 of the transmitting end coil are on the same vertical line; the geometric centers of the first layer 8 of the receiving end coil and the second layer 6 of the receiving end coil are on the same vertical line.
The long edge of the first layer 3 of the transmitting end coil is arranged in parallel with the long edge of the first layer 8 of the receiving end coil; the long side of the second layer 5 of the transmitting side coil is placed parallel to the long side of the second layer 6 of the receiving side coil. The geometric center of the transmitting end coil 104 and the geometric center of the receiving end coil 105 are placed on the same vertical line. In the application scene of the wireless charging system of the electric automobile, the advancing direction of the automobile is taken as an axis Y, the direction perpendicular to the advancing direction is taken as an axis X, and the long side direction of the first layer 3 of the transmitting end coil, the long side direction of the second layer 5 of the transmitting end coil, the long side direction of the first layer 8 of the receiving end coil and the long side direction of the second layer 6 of the receiving end coil are all arranged at 45 degrees with the axis X and the axis Y.
Fig. 4 is a schematic diagram of a power ferrite grid arrangement of a transmitting end magnetic conductive layer of a preferred embodiment of an overlapping wireless charging coil provided by the present invention, and fig. 6 is a schematic diagram of a power ferrite grid arrangement of a receiving end magnetic conductive layer of a preferred embodiment of an overlapping wireless charging coil provided by the present invention, as shown in fig. 1, 4 and 6, a transmitting end magnetic conductive layer 2 is tightly fixed on an upper surface of a transmitting end magnetic shielding layer 1; the receiving end magnetic conduction layer 9 is tightly fixed on the lower surface of the receiving end magnetic shielding layer 10. The transmitting end magnetic conduction layer 2 and the receiving end magnetic conduction layer 9 are both made of power ferrite, and the cross section of the power ferrite is rectangular. The power ferrites forming the transmitting end magnetic conduction layer 2 and the receiving end magnetic conduction layer 9 are arranged in a grid shape; as shown in fig. 4, the transverse direction and the longitudinal direction of the power ferrite grid constituting the transmitting end magnetic conduction layer 2 are respectively parallel to the long side direction of the transmitting end coil first layer 3 and the long side direction of the transmitting end coil second layer 5; as shown in fig. 6, the transverse direction and the longitudinal direction of the power ferrite grid constituting the receiving end magnetic conductive layer 9 are parallel to the long side direction of the receiving end coil first layer 8 and the long side direction of the receiving end coil second layer 6, respectively. The power ferrites constituting the transmitting end magnetic conductive layer 2 and the power ferrites constituting the receiving end magnetic conductive layer 9 are arranged at equal intervals in the transverse direction and the longitudinal direction.
Both the transmitting-side magnetic shield layer 1 and the receiving-side magnetic shield layer 10 are made of aluminum plate. The outline range of the transmitting end magnetic shielding layer 1 is not less than the outline envelope ranges of the transmitting end coil 104, the transmitting end supporting layer 4 and the transmitting end magnetic conduction layer 2; the outline range of the receiving end magnetic shielding layer 10 is not less than the outline envelope range of the receiving end coil 105, the receiving end supporting layer 7 and the receiving end magnetic conduction layer 9.
Example 2
Fig. 2 is a schematic diagram of an embodiment of an electric energy transmission system of an overlapped wireless charging coil according to the present invention, and as shown in fig. 2, the present invention provides an embodiment of an electric energy transmission system of an overlapped wireless charging coil, which includes a transmitting end circuit and a receiving end circuit, and a transmitting end coil 104 and a receiving end coil 105 are magnetically coupled for wireless energy transmission. The transmitting end circuit comprises a direct current power supply 101, a high-frequency inverter circuit 102, a transmitting end compensation circuit 103 and a transmitting end coil 104; the receiving end circuit comprises a receiving end coil 105, a receiving end compensation circuit 106, a rectification filter circuit 107 and a load 108; the transmitting end compensation circuit 103 and the receiving end compensation circuit 106 are both composed of compensation inductors and compensation capacitors connected together. The direct current power supply 101 provides stable electric energy for the wireless charging system, the high-frequency inverter circuit 102 converts direct current into high-frequency alternating current, the high-frequency alternating current enters a loop formed by the transmitting end compensation circuit 103 and the transmitting end coil 104, a high-frequency alternating magnetic field is excited in the transmitting end coil 104, the receiving end coil 105 and the transmitting end coil 104 generate magnetic coupling effect to generate induction current, and the induction current flows through the receiving end compensation circuit 106 and then is converted into direct current by the rectifier filter circuit 107 to directly supply power to the load 108.
Compared with the existing wireless power transmission technology, the overlapped wireless charging coil and the power transmission system thereof disclosed by the invention have the following advantages: 1) the two duplex coils are crossed and overlapped at a certain angle and are connected in series to form the transmitting end coil and the receiving end coil, so that the coupling coefficient between the transmitting end coil and the receiving end coil can be effectively improved, and meanwhile, the grid-shaped power ferrite arrangement mode is provided, so that the magnetic field generated by the transmitting end coil and the receiving end coil is guided, the coupling degree of the transmitting end coil and the receiving end coil can be enhanced, and the energy transmission power and efficiency are improved; 2) the better assembling position relation can reduce the influence of alignment position errors in two main directions on transmission power and efficiency, and simultaneously, the space in the vertical direction can be effectively utilized, so that the device has smaller horizontal occupied area; 3) the transmitting end magnetic shielding layer and the receiving end magnetic shielding layer made of aluminum plates can effectively shield magnetic field radiation, and the harmful influence of a high-frequency magnetic field on the outside is reduced.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (2)
1. An overlapped wireless charging coil is characterized by comprising a transmitting end and a receiving end, wherein the transmitting end comprises a transmitting end magnetic shielding layer, a transmitting end magnetic conduction layer, a transmitting end coil first layer, a transmitting end supporting layer and a transmitting end coil second layer; the receiving end comprises a receiving end coil second layer, a receiving end supporting layer, a receiving end coil first layer, a receiving end magnetic conduction layer and a receiving end magnetic shielding layer;
the transmitting end magnetic conduction layer is fixed on the upper surface of the transmitting end magnetic shielding layer; the first layer of the transmitting end coil and the second layer of the transmitting end coil are fixed on the transmitting end supporting layer; the first layer of the transmitting end coil and the second layer of the transmitting end coil are connected in series to form a transmitting end coil; the second receiving end coil layer and the first receiving end coil layer are fixed on the receiving end supporting layer; the second layer of the receiving end coil and the first layer of the receiving end coil are connected in series to form a receiving end coil; the receiving end magnetic conduction layer is fixed on the lower surface of the receiving end magnetic shielding layer; the serial connection means that the currents of the first layer of the transmitting end coil and the second layer of the transmitting end coil are the same, and the currents of the second layer of the receiving end coil and the first layer of the receiving end coil are the same;
the outline range of the transmitting end supporting layer is not less than the outline envelope range of the first layer of the transmitting end coil and the second layer of the transmitting end coil; the outline range of the receiving end supporting layer is not less than the outline envelope range of the first layer of the receiving end coil and the second layer of the receiving end coil;
the first layer of the transmitting end coil, the second layer of the transmitting end coil, the first layer of the receiving end coil and the second layer of the receiving end coil are wound according to the shape of 8 to form a duplex structure; the first layer of the transmitting end coil and the second layer of the transmitting end coil are arranged in a 90-degree crossed mode, wherein the 90-degree mode means that the long edge of the first layer of the transmitting end coil is perpendicular to the long edge of the second layer of the transmitting end coil; the first layer of the receiving end coil and the second layer of the receiving end coil are arranged in a 90-degree crossed mode, and the 90-degree mode means that the long edge of the first layer of the receiving end coil is perpendicular to the long edge of the second layer of the receiving end coil;
the geometric centers of the first layer of the transmitting end coil and the second layer of the transmitting end coil are on the same vertical line; the geometric centers of the first layer of the receiving end coil and the second layer of the receiving end coil are on the same vertical line; the long edge of the first layer of the transmitting end coil is arranged in parallel with the long edge of the first layer of the receiving end coil; the long edge of the second layer of the transmitting end coil is arranged in parallel with the long edge of the second layer of the receiving end coil;
the geometric center of the transmitting end coil and the geometric center of the receiving end coil are on the same vertical line; the long side direction of the first layer of the transmitting end coil, the long side direction of the second layer of the transmitting end coil, the long side direction of the first layer of the receiving end coil and the long side direction of the second layer of the receiving end coil are all arranged at an angle of 45 degrees with an X axis and a Y axis, and the X axis and the Y axis refer to two directions which are perpendicular to each other and parallel to the transmitting end coil and are expected to obtain higher position alignment tolerance;
the transmitting end magnetic conduction layer and the receiving end magnetic conduction layer are both composed of power ferrites, and the cross sections of the power ferrites are rectangular; the transmitting end magnetic shielding layer and the receiving end magnetic shielding layer are made of aluminum plates;
the power ferrites of the transmitting end magnetic conduction layer and the receiving end magnetic conduction layer are arranged in a grid shape, and the transverse direction and the longitudinal direction of a power ferrite grid forming the transmitting end magnetic conduction layer are respectively parallel to the long edge direction of the first layer of the transmitting end coil and the long edge direction of the second layer of the transmitting end coil; the transverse direction and the longitudinal direction of a power ferrite grid forming the receiving end magnetic conduction layer are respectively parallel to the long edge direction of the first layer of the receiving end coil and the long edge direction of the second layer of the receiving end coil; the power ferrite forming the transmitting end magnetic conduction layer and the power ferrite forming the receiving end magnetic conduction layer are arranged at equal intervals along the transverse direction and the longitudinal direction.
2. An electric energy transmission system comprising the overlapped wireless charging coil of claim 1, comprising a transmitting end circuit and a receiving end circuit; the transmitting end circuit comprises a direct current power supply, a high-frequency inverter circuit, a transmitting end compensation circuit and a transmitting end coil; the receiving end circuit comprises a receiving end coil, a receiving end compensation circuit, a rectification filter circuit and a load; the transmitting end compensation circuit and the receiving end compensation circuit are formed by connecting a compensation inductor and a compensation capacitor.
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| CN201810574055.1A CN108878111B (en) | 2018-06-05 | 2018-06-05 | Overlapping wireless charging coil and electric energy transmission system |
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| CN201810574055.1A CN108878111B (en) | 2018-06-05 | 2018-06-05 | Overlapping wireless charging coil and electric energy transmission system |
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| CN109560587A (en) * | 2018-12-21 | 2019-04-02 | 北京理工大学 | A kind of wireless compensating charge optimization device of bilateral LCC |
| CN110571033A (en) * | 2019-08-30 | 2019-12-13 | 中兴新能源汽车有限责任公司 | Wireless charging coil and wireless charging device |
| CN112259348B (en) * | 2020-10-21 | 2022-01-11 | 清华大学 | Integrated inductive device and amplifier |
| CN112737143B (en) * | 2020-12-25 | 2022-10-14 | 上海安费诺永亿通讯电子有限公司 | Wireless charging coil and charging equipment |
| CN112953023B (en) * | 2021-03-17 | 2022-08-05 | 三峡大学 | Asymmetric LD wireless power transmission coil structure and application thereof |
| CN114407690B (en) * | 2022-01-21 | 2022-08-16 | 西南科技大学 | Concave coupling mechanism and unmanned aerial vehicle charging system |
| CN116154982B (en) * | 2023-04-23 | 2023-06-23 | 煤炭科学技术研究院有限公司 | Coil component |
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| CN106953417A (en) * | 2017-03-30 | 2017-07-14 | 上海交通大学 | Wireless charging electric wire coil assembly and the electric energy transmission system using the component |
| CN107170570A (en) * | 2017-04-11 | 2017-09-15 | 中国矿业大学 | A kind of novel radio electric energy transmission flux coupled mechanism |
| CN107171448A (en) * | 2017-06-23 | 2017-09-15 | 中国矿业大学 | The flux coupled mechanism of the parallel induction wireless electric energy Transmission system of principal wave harmonic wave binary channel |
| CN107370245A (en) * | 2017-07-13 | 2017-11-21 | 上海交通大学 | A kind of Integral wireless charge coil and its electric energy transmission system |
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