CN221080372U - Magnetic resonance antenna system for constructing three-dimensional wireless power supply field - Google Patents
Magnetic resonance antenna system for constructing three-dimensional wireless power supply field Download PDFInfo
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- CN221080372U CN221080372U CN202322641918.1U CN202322641918U CN221080372U CN 221080372 U CN221080372 U CN 221080372U CN 202322641918 U CN202322641918 U CN 202322641918U CN 221080372 U CN221080372 U CN 221080372U
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Abstract
The utility model belongs to the technical field of wireless power transmission, and particularly relates to a magnetic resonance antenna system for constructing a three-dimensional wireless power supply field, which comprises a transmitting antenna, a relay antenna and a receiving antenna; the transmitting antenna is arranged below the relay antenna, the receiving antenna is arranged between the transmitting antenna and the relay antenna or above the relay antenna, and the receiving antenna can be coupled with the transmitting antenna and the relay antenna, so that the coupling distance in the vertical direction is prolonged; by arranging the antenna magnetic shielding materials below the transmitting antenna and above the relay antenna respectively, any region of the receiving antenna in a closed uniform three-dimensional field between the transmitting antenna and the relay antenna can be strongly coupled with the transmitting antenna and the relay antenna, so that the coupling distance between the transmitting antenna and the receiving antenna in the vertical direction and the horizontal degree of freedom in the space region can be prolonged, and a stable and efficient wireless charging or wireless electric energy supply scheme is provided for portable computers, communication products, consumer electronics and LED lighting equipment.
Description
Technical Field
The utility model belongs to the technical field of wireless power transmission, and particularly relates to a magnetic resonance antenna system for constructing a three-dimensional wireless power supply field.
Background
With the continuous development of electronic information technology and automation control technology, various home appliances, consumer electronics, mobile communication devices and the like have been widely popularized, however, conventional home appliances rely on wired connection between a power cord and a power socket to realize power supply, and electronic devices with built-in batteries also need wired connection between a charging cord and the power socket to be charged, so that we can see the wires for supplying power to the electronic devices everywhere. These wires not only occupy our active space, limiting the convenience of the device use, but also create the potential safety hazard of electricity use.
Therefore, with the increasing demand of people for portable devices and green energy systems that can be used completely wirelessly, research and application of wireless energy transmission technology is rapidly becoming the focus of academia and industry at home and abroad. Currently, the wireless charging technologies recognized in the industry are mainly divided into three categories:
The first is the QI standard of WPC alliance, also called magnetic induction coupling technology, which generates a high-frequency alternating current signal through a high-frequency inverter circuit, then converts the high-frequency alternating current signal into a magnetic field through a transmitting end coil, and a receiving end coil generates induced electromotive force after sensing the magnetic field, and converts the induced electromotive force into load power after connecting a load, wherein the magnetic field between the receiving and transmitting coils is tightly coupled, which requires that the distance between the receiving and transmitting coils is very short, and the coupling strength is very fast reduced as the distance between the receiving and transmitting coils is increased;
The second is Airfuel allied magnetic resonance coupling technology, which uses the same frequency resonance of the magnetic field in the reactance field to separate and convert energy, the alternating magnetic field and the alternating electric field generated by the transmitting antenna in the surrounding space are in orthogonal relation at any time, and the electromagnetic field is pi/2 different in phase, so that the electromagnetic field can store energy, but the synthesized electromagnetic wave does not transmit any energy, when the receiving antenna enters the coupling area range of the transmitting antenna, the same frequency resonance is generated between the transmitting antenna and the receiving antenna, the energy is coupled to the receiving end in the form of the magnetic field from the transmitting end, thereby realizing the space conversion of the energy, the coupling between the transmitting antenna and the receiving antenna belongs to loose coupling, the receiving antenna can be coupled to the most energy when the optimal coupling distance is provided, namely the most magnetic force lines pass through the receiving antenna, and the coupling strength between the receiving antenna can not be greatly reduced in the certain variation range above and below the optimal coupling distance.
Thirdly, electromagnetic radiation type wireless energy transmission technology; among the three technologies, magnetic induction technology has been developed earlier, and has been applied commercially in the consumer electronics field, but the magnetic induction wireless charging technology for consumer electronics device disclosed at present has the following drawbacks due to the close coupling characteristics of the magnetic induction technology:
(1) The transmission distance is short, the transmission efficiency is higher when the vertical distance of the receiving and transmitting antennas is short, but the transmission efficiency is drastically reduced along with the increase of the vertical distance between the receiving and transmitting antennas;
(2) The horizontal degree of freedom is poor in the space region, when the receiving antenna is in the transmitting antenna center, the transmission efficiency between the receiving antenna and the transmitting antenna is higher, but when the receiving antenna center deviates from the transmitting antenna center, the transmission efficiency between the receiving antenna and the transmitting antenna can be obviously reduced, and particularly when the size difference of the receiving antenna is larger, the magnetic force lines of the transmitting antenna are not dispersed enough, so that the receiving antenna has larger coupling coefficient difference in the whole transmitting antenna region, the receiving antenna can possibly have a charging blind area in the transmitting antenna region, and the transmission efficiency is obviously reduced.
Disclosure of utility model
In view of the above-mentioned shortcomings of the prior art, the present utility model provides a magnetic resonance antenna system for constructing a stereoscopic wireless power supply field. The problems that when the size difference of the receiving and transmitting antennas is large, the transmission efficiency is reduced and the horizontal degree of freedom in a space area is poor along with the increase of the transmission distance in the existing magnetic resonance charging technology are solved.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the antenna comprises a transmitting antenna, a relay antenna and a receiving antenna;
The transmitting antenna is arranged below the relay antenna, and a transmitting antenna magnetic shielding material is arranged below the transmitting antenna; a relay antenna magnetic shielding material is arranged above the relay antenna; the receiving antenna is arranged between the transmitting antenna and the relay antenna or above the relay antenna and is used for prolonging the distance in the vertical direction.
The beneficial effects of the technical scheme adopted by the utility model are as follows: when the receiving antenna is positioned between the transmitting antenna and the relay antenna or above the relay antenna, the receiving antenna can work in a space area with a certain distance above the relay antenna, so that the coupling distance in the vertical direction can be prolonged, the transmission efficiency is improved, and the problems that the transmission efficiency is reduced and the horizontal degree of freedom in the space area is poor along with the increase of the transmission distance are solved.
The magnetic shielding material of the transmitting antenna can shield the interference below the transmitting antenna, so that magnetic force lines of the transmitting antenna are gathered above the transmitting antenna more, and the coupling coefficient between the transmitting antenna and the relay antenna or the receiving antenna is increased; the relay antenna magnetic shielding material can shield interference above the relay antenna, so that magnetic force lines of the relay antenna are gathered below the relay antenna more, and the coupling coefficient between the relay antenna and the transmitting antenna or the receiving antenna is increased; when the relay antenna is arranged above the transmitting antenna, a cube area is formed between the transmitting antenna and the relay antenna, and magnetic force lines of the transmitting antenna and magnetic force lines of the relay antenna can form a closed three-dimensional uniform magnetic field; when the receiving antenna is positioned between the transmitting antenna and the relay antenna, the receiving antenna can form a certain angle with the relay antenna or the transmitting antenna but does not influence the coupling coefficient between the receiving antenna and the relay antenna or the transmitting antenna, so that the receiving antenna has stronger coupling coefficient in any region of the three-dimensional space, the coupling distance between the transmitting antenna and the receiving antenna in the vertical direction and the horizontal degree of freedom in the space region can be prolonged, and the problem that the transmission efficiency is reduced along with the increase of the distance between the transmitting antenna and the receiving antenna when the size difference of the transmitting antenna is large is avoided.
Furthermore, the relay antenna matching capacitor is connected in series with the two ends of the relay antenna, and the relay antenna matching capacitor form a resonance structure.
The beneficial points of the technical scheme adopted by the utility model are as follows: the relay antenna and the matching capacitor of the relay antenna form a resonant structure together, so that the frequency resonance of the relay antenna can be stabilized at the working frequency.
Further, the relay antenna size is comparable to the transmit antenna size.
The beneficial points of the technical scheme adopted by the utility model are as follows: a relay antenna with the same size is additionally arranged above the transmitting antenna, and when the receiving antenna is positioned between the transmitting antenna and the relay antenna, the receiving antenna can be coupled with the transmitting antenna and the relay antenna; when the distance between the receiving antenna and the transmitting antenna is short, the receiving antenna is mainly coupled with the transmitting antenna, and when the distance between the receiving antenna and the transmitting antenna is long, the receiving antenna is mainly coupled with the relay antenna, so that the stronger coupling coefficient is ensured no matter the receiving antenna is positioned at any position between the relay antenna and the transmitting antenna, and the coupling coefficient in the vertical direction of the receiving antenna is greatly improved.
Further, the transmitting antenna is formed by tightly winding a plurality of turns of coils; the coil of the transmitting antenna is annular, circular, rectangular or polygonal.
Further, the relay antenna is formed by tightly winding a plurality of turns of coils; the coil of the relay antenna is annular, circular, rectangular or polygonal.
Further, the edges of the coils of the transmitting antenna and the relay antenna are smooth arc structures.
The beneficial points of the technical scheme adopted by the utility model are as follows: the transmitting antenna and the relay antenna are both of multi-turn coil structures, so that the magnetic resonance coupling strength between the transmitting antenna and the relay antenna can be increased.
Further, the receiving antenna is of a three-dimensional winding structure.
The beneficial points of the technical scheme adopted by the utility model are as follows: the receiving antenna is of a three-dimensional winding structure and can be coupled to magnetic lines of force emitted by the transmitting antenna and the relay antenna in more space, so that the coupling coefficient between the receiving antenna and the transmitting antenna is increased.
In summary, the magnetic resonance antenna system for constructing the stereoscopic wireless power supply field provided by the utility model has the beneficial effects that:
(1) The utility model adopts a wireless power supply mode of magnetic resonance coupling, and increases the coupling distance between the transmitting antenna and the receiving antenna in the vertical direction by the coupling mode of the transmitting antenna and the relay antenna, thereby solving the problems that the coupling distance in the whole transmitting antenna area is near when the size difference of the receiving antenna is large, and the transmission efficiency is reduced along with the increase of the transmission distance.
(2) In the utility model, a transmitting antenna magnetic shielding material is arranged below a transmitting antenna, a relay antenna magnetic shielding material is arranged above a relay antenna, so that a three-dimensional space region is formed between the transmitting antenna and the relay antenna, and a uniform closed field is formed by magnetic force lines of the transmitting antenna and magnetic force lines of the relay antenna in the space; when the receiving antenna is positioned in any area of the space area, the receiving antenna can have stronger coupling coefficient with the transmitting antenna and the relay antenna, and the receiving antenna can be at a certain angle with the transmitting antenna or the relay antenna without influencing the coupling coefficient, so that the coupling distance between the transmitting antenna and the receiving antenna in the vertical direction and the horizontal degree of freedom in the space area can be prolonged, and the problem that the transmission efficiency is reduced along with the increase of the distance between the transmitting antenna and the receiving antenna when the size difference of the transmitting antenna is large is avoided.
(3) The magnetic resonance antenna system for constructing the three-dimensional wireless power supply field can greatly improve the overall energy conversion efficiency of the magnetic induction wireless power supply field when the charging distance is far, and provides a stable and efficient wireless charging or wireless power supply scheme for portable computers, communication products, consumer electronics and LED lighting equipment.
Drawings
Fig. 1 is a block diagram of a wireless power supply antenna system with relay provided in embodiment 1 of the present utility model;
fig. 2 is a top view of a transmitting antenna provided in embodiment 1 of the present utility model;
fig. 3 is a top view of a relay antenna according to embodiment 1 of the present utility model;
Fig. 4 is a block diagram of a wireless power supply antenna system provided in embodiment 2 of the present utility model;
Fig. 5 is a top view of a transmitting antenna provided in embodiment 2 of the present utility model;
Fig. 6 is a top view of a relay antenna according to embodiment 2 of the present utility model.
101, A transmitting antenna; 102. a transmitting antenna magnetic shielding material; 201. a relay antenna; 202. matching the capacitance of the relay antenna; 203. relay antenna magnetic shielding material; 301. and a receiving antenna.
Detailed Description
The following description of the embodiments of the present utility model is provided to facilitate understanding of the present utility model by those skilled in the art, but it should be understood that the present utility model is not limited to the scope of the embodiments, and all the utility models which make use of the inventive concept are protected by the spirit and scope of the present utility model as defined and defined in the appended claims to those skilled in the art.
Example 1
As shown in fig. 1, a magnetic resonance antenna system for constructing a stereoscopic wireless power supply field provided by an embodiment of the present utility model includes a transmitting antenna 101, a relay antenna 201 and a receiving antenna 301; the transmitting antenna 101 is disposed below the relay antenna 201; a transmitting antenna magnetic shielding material 102 is arranged below the transmitting antenna 101; a relay antenna magnetic shielding material 203 is provided above the relay antenna 201; the receiving antenna 301 is disposed between the transmitting antenna 101 and the relay antenna 201.
In this embodiment, as shown in fig. 1, the receiving antenna 301 is of a three-dimensional winding structure, and the size difference between the receiving antenna 301 and the transmitting antenna is large, the receiving antenna 301 is small, the coupling distance between the transmitting and receiving antennas is short, and there is a problem that the coupling coefficient and the transmission efficiency between the transmitting and receiving antennas decrease as the distance between the transmitting and receiving antennas increases.
In the embodiment of the present utility model, as shown in fig. 1, a relay antenna 201 with a size equivalent to that of the transmitting antenna 101 is added above the transmitting antenna 101, when the transmitting antenna 101 and the relay antenna 201 are far in size, a strong coupling coefficient still exists between the transmitting antenna 101 and the relay antenna 201, and when the receiving antenna 301 is located between the transmitting antenna 101 and the relay antenna 201, the receiving antenna 301 can be coupled with both the transmitting antenna 101 and the relay antenna 201; when the receiving antenna 301 is closer to the transmitting antenna 101, the receiving antenna 301 is mainly coupled with the transmitting antenna 101; when the receiving antenna 301 is far from the transmitting antenna 101, the receiving antenna 301 is mainly coupled with the relay antenna 201, so that a strong coupling coefficient is ensured no matter the receiving antenna 301 is located at any position between the relay antenna 2012 and the transmitting antenna 101, and the transmission efficiency can be improved.
In the embodiment of the present utility model, as shown in fig. 2, the magnetic shielding material 102 of the transmitting antenna disposed below the transmitting antenna 101 can shield the interference below the transmitting antenna 101, so that the magnetic force lines of the transmitting antenna 101 are more concentrated above the transmitting antenna 101, and the coupling coefficient between the transmitting antenna 101 and the relay antenna 201 or the receiving antenna 301 can be increased; the relay antenna magnetic shielding material 203 disposed above the relay antenna 201 can shield the interference above the relay antenna 201, so that the magnetic lines of force of the relay antenna 201 are concentrated above the relay antenna 201 more, and the coupling coefficient between the relay antenna 201 and the transmitting antenna 101 can be increased; when the relay antenna 201 is located above the transmitting antenna 101, a cubic area can be formed between the transmitting antenna 101 and the relay antenna 201, and magnetic lines of force of the transmitting antenna 101 and magnetic lines of force of the relay antenna 201 can form a closed three-dimensional uniform magnetic field in the cubic area; when the receiving antenna 301 is disposed between the transmitting antenna 101 and the relay antenna 201, the receiving antenna 301 is located in the closed three-dimensional magnetic field, at this time, any region of the receiving antenna 301 in the three-dimensional space has a strong coupling coefficient, and even when the receiving antenna 301 has a large angle with the transmitting antenna 101 or the relay antenna 201 in the region, the coupling coefficient between the receiving antenna 301 and the transmitting antenna 101 or the receiving antenna 301 is unchanged, so that the coupling distance between the transmitting antenna 101 and the receiving antenna 301 in the vertical direction and the horizontal degree of freedom in the space region can be prolonged, and the problem that when the size difference of the transmitting and receiving antennas is large, the transmission efficiency decreases with the increase of the distance between the transmitting and receiving antennas can be avoided.
In the embodiment of the present utility model, as shown in fig. 2, the transmitting antenna 101 is formed by tightly winding a plurality of coils, and the plurality of coils forming the transmitting antenna 101 are all in a ring shape, a round shape, a rectangular shape or a polygonal shape, and the edges of each coil are all in a smooth arc structure. In use, the multi-turn coil structure of transmit antenna 101 increases the current generated by magnetic resonance coupling between transmit antenna 101 and repeater antenna 201.
In the embodiment of the present utility model, as shown in fig. 3, the relay antenna 201 is formed by tightly winding a plurality of turns of coils, and the plurality of coils forming the relay antenna 201 are all in a ring shape, a round shape, a rectangular shape or a polygonal shape, and the edges of each coil are all in a smooth arc structure; the relay antenna matching capacitor 202 is connected in series with two ends of the relay antenna 201, one end of the relay antenna matching capacitor 202 is connected with the coil of the outermost turn of the relay antenna 201, and the other end is connected with the coil of the innermost turn of the relay antenna 201, and the relay antenna 201 and the relay antenna matching capacitor 202 form a resonant structure, so that the frequency resonance of the relay antenna 201 can be stabilized at the working frequency.
Example two
The magnetic resonance antenna system for constructing the stereoscopic wireless power supply field provided by the utility model, as shown in fig. 4, comprises a transmitting antenna 101, a relay antenna 201 and a receiving antenna 301; the transmitting antenna 101 is disposed below the relay antenna 201, the relay antenna 201 is disposed above the transmitting antenna 101, and the receiving antenna 301 is disposed between the transmitting antenna 101 and the relay antenna 201 or above the relay antenna 201.
In the embodiment of the present utility model, as shown in fig. 4, the size of the receiving antenna 301 and the size of the transmitting antenna 101 are greatly different, and the size of the receiving antenna 301 is smaller than the size of the transmitting antenna 101.
When the transmitting/receiving antenna distance is long, the coupling coefficient between the receiving antenna 301 and the transmitting antenna 101 is weak; by arranging the relay antenna 201 with the size equivalent to that of the transmitting antenna 101 above the transmitting antenna 101, when the transmitting antenna 101 is far away from the relay antenna 201, magnetic lines of force of the transmitting antenna 101 and magnetic lines of force of the relay antenna 201 can form a spatially uniformly distributed stereoscopic magnetic field, so that a strong coupling coefficient is still maintained between the transmitting antenna 101 and the relay antenna 201; when the receiving antenna 301 is in this three-dimensional magnetic field space, it can be coupled to both the transmitting antenna 101 and the relay antenna 201; when the receiving antenna 301 is closer to the transmitting antenna 101, the receiving antenna 301 is mainly coupled to the transmitting antenna 101, and when the receiving antenna 301 is farther from the transmitting antenna 101, the receiving antenna 301 is mainly coupled to the relay antenna 201, so that a strong coupling coefficient can be ensured no matter where the receiving antenna 301 is located between the relay antenna 201 and the transmitting antenna 101; meanwhile, the receiving antenna 301 can operate not only in a space region between the receiving antenna 301 and the transmitting antenna 101, but also in a space region above the relay antenna 201 by a certain distance, and the receiving antenna 301 is far from the transmitting antenna 101 at this time, so that it is coupled with the relay antenna 201, the coupling distance in the vertical direction is prolonged, and the transmission efficiency can be improved.
In the embodiment of the present invention, by adding a relay wire above the transmitting antenna 101, the coupling distance of the transmitting and receiving antenna in the vertical direction can be prolonged, and the horizontal degree of freedom of the whole system in the space region can be increased; in addition, since no magnetic shielding material is disposed below the transmitting antenna 101 and above the relay antenna 201, the magnetic field of the transmitting antenna 101 can be expanded downward, a space field which is continuously attenuated with distance is formed below the transmitting antenna 101, and when the receiving antenna 301 is in the space region, the coupling coefficient between the transmitting and receiving antennas is gradually reduced with the increase of the distance between the receiving antenna 301 and the transmitting antenna 101; meanwhile, the magnetic field of the relay antenna 201 also expands to the upper side, a space field which continuously attenuates along with the distance is formed above the relay antenna 201, and when the receiving antenna 301 is positioned in the space area, the coupling coefficient between the receiving antenna 301 and the relay antenna 201 gradually decreases along with the increase of the distance between the receiving antenna 301 and the relay antenna 201; when in use, magnetic lines of force pass through the lower part of the transmitting antenna 101 and the upper part of the relay antenna 201, so that the space region in which the receiving antenna 301 can normally work can be greatly increased, the coupling distance of the antenna system in the vertical direction and the horizontal freedom degree in the space region are further increased, and the problem that when the size difference of the receiving and transmitting antennas is large, the transmission efficiency is reduced along with the increase of the distance between the receiving and transmitting antennas is solved.
In the embodiment of the present utility model, as shown in fig. 5, the transmitting antenna 101 is formed by tightly winding a plurality of coils, and the plurality of coils forming the transmitting antenna 101 are all in a ring shape, a round shape, a rectangular shape or a polygonal shape, and the edges of each coil are all in a smooth arc structure. In use, the multi-turn coil structure of transmit antenna 101 increases the current generated by magnetic resonance coupling between transmit antenna 101 and repeater antenna 201.
In the embodiment of the present utility model, as shown in fig. 6, the relay antenna 201 is formed by tightly winding a plurality of turns of coils, and the plurality of coils forming the relay antenna 201 are all in a ring shape, a round shape, a rectangular shape or a polygonal shape, and the edges of each coil are all in a smooth arc structure; the relay antenna matching capacitor 202 is connected in series with two ends of the relay antenna 201, one end of the relay antenna matching capacitor 202 is connected with the coil of the outermost turn of the relay antenna 201, and the other end is connected with the coil of the innermost turn of the relay antenna 201, and the relay antenna 201 and the relay antenna matching capacitor 202 form a resonant structure, so that the frequency resonance of the relay antenna 201 can be stabilized at the working frequency.
In summary, in the magnetic resonance antenna system for constructing a stereoscopic wireless power supply field provided by the utility model, by arranging the relay antenna 201 above the transmitting antenna 101, when the receiving antenna 301 is located between the transmitting antenna 101 and the relay antenna 201 or above the relay antenna 201, the receiving antenna 301 can be coupled with both the transmitting antenna 101 and the relay antenna 201, and the coupling distance in the vertical direction can be prolonged; by arranging the transmitting antenna magnetic shielding material 102 below the transmitting antenna 101 and arranging the relay antenna magnetic shielding material 203 above the relay antenna 201, a closed uniform stereoscopic field can be formed between the transmitting antenna 101 and the relay antenna 201 by magnetic force lines of the transmitting antenna 101 and the relay antenna 201, any region of the receiving antenna 301 in the stereoscopic field can have stronger coupling coefficients with the transmitting antenna 101 and the relay antenna 201, the coupling distance between the transmitting antenna 101 and the receiving antenna 301 in the vertical direction and the horizontal degree of freedom in the space region can be prolonged, and the problem that when the size difference of transmitting and receiving antennas is large, the transmission efficiency is reduced along with the increase of the distance between the transmitting and receiving antennas is solved.
Claims (7)
1. A magnetic resonance antenna system for constructing a stereoscopic wireless power supply field, characterized by: comprises a transmitting antenna (101), a relay antenna (201) and a receiving antenna (301);
The transmitting antenna (101) is arranged below the relay antenna (201); a transmitting antenna magnetic shielding material (102) is arranged below the transmitting antenna (101); a relay antenna magnetic shielding material (203) is arranged above the relay antenna (201); the receiving antenna (301) is disposed between the transmitting antenna (101) and the relay antenna (201) or above the relay antenna (201) for extending the distance in the vertical direction.
2. The magnetic resonance antenna system for constructing a stereoscopic wireless power supply field of claim 1, wherein: and the two ends of the relay antenna (201) are connected in series with a relay antenna matching capacitor (202), and the relay antenna (201) and the relay antenna matching capacitor (202) form a resonant structure.
3. The magnetic resonance antenna system for constructing a stereoscopic wireless power supply field according to claim 1 or 2, wherein: the relay antenna (201) is of a size comparable to the transmitting antenna (101).
4. The magnetic resonance antenna system for constructing a stereoscopic wireless power supply field of claim 1, wherein: the transmitting antenna (101) is formed by tightly winding a plurality of turns of coils, and the coils of the transmitting antenna (101) are annular, circular, rectangular or polygonal.
5. A magnetic resonance antenna system for constructing a stereoscopic wireless power supply field according to claim 3, characterized in that: the relay antenna (201) is formed by tightly winding a plurality of turns of coils, and the coils of the relay antenna (201) are annular, circular, rectangular or polygonal.
6. The magnetic resonance antenna system for constructing a stereoscopic wireless power supply field according to claim 4 or 5, wherein: the edges and corners of the coils of the transmitting antenna (101) and the relay antenna (201) are smooth arc structures.
7. The magnetic resonance antenna system for constructing a stereoscopic wireless power supply field of claim 1, wherein: the receiving antenna (301) is of a three-dimensional winding structure.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221080372U true CN221080372U (en) | 2024-06-04 |
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