CN120750048A - High-robustness magnetic resonance wireless energy transmission system based on symmetric distributed transmitting array - Google Patents
High-robustness magnetic resonance wireless energy transmission system based on symmetric distributed transmitting arrayInfo
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- CN120750048A CN120750048A CN202511134856.2A CN202511134856A CN120750048A CN 120750048 A CN120750048 A CN 120750048A CN 202511134856 A CN202511134856 A CN 202511134856A CN 120750048 A CN120750048 A CN 120750048A
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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
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H—ELECTRICITY
- 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
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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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
-
- 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
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
- H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
-
- 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
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The invention discloses a high-robustness magnetic resonance wireless energy transmission system based on a symmetric distributed transmitting array, which relates to the technical field of wireless energy transmission and comprises a source coil array, a transmitting coil array, a receiving coil array and a medium substrate; the dielectric substrate comprises three layers, and the source coil array, the transmitting coil array and the receiving coil array are respectively printed on the three layers of dielectric substrates. The invention utilizes the multilayer arrangement nested inside and outside the source coil array, is favorable for maximizing magnetic resonance coupling and magnetic field focusing in the direction of the source coil array, enhancing the magnetic field intensity, the dense arrangement of the coils in the transmitting coil array obtains a large-range uniform and stable magnetic field, each coil is added with a resonance capacitor, each sub-coil can resonate at the working frequency, the coupling with the receiving coil is more convenient, and the transmission efficiency is further enhanced. The proposed technology for improving the robustness of magnetic resonance wireless energy transmission has good effects.
Description
Technical Field
The invention relates to the technical field of wireless energy transmission, in particular to a high-robustness magnetic resonance wireless energy transmission system based on a symmetrical distributed transmitting array.
Background
In recent years, wireless energy transmission has received widespread attention. The magnetic resonance wireless energy transmission utilizes resonance coupling between coils to transmit energy, can provide higher power transmission efficiency in a middle-long distance, and is widely applied to portable electronic products, implantable medical devices, electric automobiles, robotic systems and energy collecting devices due to the advantages of high portability, safety, low cost and the like. However, the transmission efficiency of the conventional MCR-WPT system may be significantly reduced due to the angular offset or lateral offset of the transmitting coil and the receiving coil. Conventional single rectangular/circular coils and bipolar coils provide high efficiency only in a limited range, cannot maintain efficient transmission over a large range, and transmission efficiency is greatly reduced when the transmitting coil and the receiving coil are offset. Thus, wireless energy transfer systems require methods that are resistant to distance variations and lateral offsets. In view of the above, it is important to study a method for improving the robustness of a wireless energy transmission system.
In order to solve the above problems, researchers have proposed many solutions, and some researchers have proposed using a switch transmitting array composed of four rectangular coils distributed at four corners, and when receiving coils are shifted to corresponding areas, the corresponding rectangular coils are turned on, enhancing the transmitting power. Other researchers have proposed using circuit compensation topologies to optimize the compensation parameters of the relay coil and the receive coil by using non-resonant compensation methods to reduce losses and improve efficiency. However, the existing design has larger size and complicated circuit topology, so that the system is more sensitive to parameter change, and the implementation is difficult. To this end, a technique for improving robustness of magnetic resonance wireless energy transfer is proposed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a technology suitable for improving the robustness of a magnetic resonance wireless energy transmission system so as to realize the purpose of reducing the reduction of transmission efficiency when a transmitting part and a receiving end deviate.
The invention provides a high-robustness magnetic resonance wireless energy transmission system based on a symmetrical distributed transmitting array, which comprises a source coil array, a transmitting coil array, a receiving coil array and a medium substrate, wherein the medium substrate comprises three layers, and the source coil array, the transmitting coil array and the receiving coil array are respectively printed on the three layers of medium substrates.
Preferably, the source coil array is printed on the first layer of the medium substrate, the transmitting coil array is printed on the second layer of the medium substrate, the source coil array and the transmitting coil array are tightly overlapped to form a transmitting end, and the source coil array transmits energy to the transmitting coil array through coupling.
Preferably, the source coil array is composed of three layers of coils nested inside and outside, and the three layers of coils of different types are used for magnetic field concentration and impedance matching through reverse winding.
Preferably, the transmitting coil array is formed by eight triangular coils with four turns which are arranged in a rotating mode around the center, and a high-strength and wide-range stable magnetic field is formed by tightly arranging the coils.
The source coil array is composed of a first winding, a second winding, a third winding, a fourth winding and a first capacitor, wherein one end of the first winding is used for welding an SMA interface, the other end of the first winding is connected with the second winding, the second winding is a single-turn rectangular coil, one end of the second winding is connected with the first winding, the other end of the second winding is connected with the third winding at the outermost layer of the source coil array, meanwhile, the first capacitor is connected in the middle of the first winding in a reverse winding mode, the third winding is a single-turn rectangular coil, one end of the third winding is connected with the second winding, the other end of the third winding is connected with the fourth winding, the inner current direction is opposite to the inner current direction of the third winding, two ends of the fourth winding are connected with the third winding to form a closed loop, the first capacitor and two ends of the second winding are connected with the first capacitor and the second capacitor in a closed loop in a reverse winding interval mode, and the first capacitor and the second capacitor are welded at two ends of the second winding.
The transmitting coil array is preferably composed of a first resonant unit, a second resonant unit, a third resonant unit, a fourth resonant unit, a fifth resonant unit, a sixth resonant unit, a seventh resonant unit and an eighth resonant unit which are printed on the front surface of the second layer of the dielectric substrate, and a second resonant capacitor, a third resonant capacitor, a fourth resonant capacitor, a fifth resonant capacitor, a sixth resonant capacitor, a seventh resonant capacitor, an eighth resonant capacitor and a ninth resonant capacitor which are printed on the back surface of the second layer of the dielectric substrate, wherein the first resonant unit is connected with the second resonant capacitor through a metal through hole, the second resonant unit is connected with the third resonant capacitor through a metal through hole, the third resonant unit is connected with the fourth resonant capacitor through a metal through hole, the fourth resonant unit is connected with the fifth resonant capacitor through a metal through hole, the fifth resonant unit is connected with the sixth resonant capacitor through a metal through hole, the sixth resonant unit is connected with the seventh resonant capacitor through a metal through hole, the seventh resonant unit is connected with the eighth resonant capacitor through a metal through hole, and the eighth resonant unit is connected with the eighth resonant unit through a metal through hole and the eighth resonant capacitor is not in contact with each other, and the eighth resonant unit is arranged around the center.
Preferably, the receiving coil array includes a receiving coil and a load coil, and is printed on the dielectric substrate of the third layer to form a receiving end.
Compared with the prior art, the invention has the following beneficial effects:
The invention utilizes the multilayer arrangement nested inside and outside the source coil array, is favorable for maximizing magnetic resonance coupling and magnetic field focusing in the direction of the source coil array, enhancing the magnetic field intensity, the dense arrangement of the coils in the transmitting coil array obtains a large-range uniform and stable magnetic field, each coil is added with a resonance capacitor, each sub-coil can resonate at the working frequency, the coupling with the receiving coil is more convenient, and the transmission efficiency is further enhanced. The proposed technology for improving the robustness of magnetic resonance wireless energy transmission has good effects.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall architecture of a technique for improving robustness of a magnetic resonance wireless energy transfer system in accordance with an embodiment of the present invention;
FIG. 2 is a source coil array structure according to an embodiment of the present invention;
FIG. 3 is a diagram of a transmit coil array configuration of an embodiment of the invention;
FIG. 4 is a diagram of a receiver-side architecture of an embodiment of the present invention;
FIG. 5 is a graph of S-parameters of a wireless energy transfer system in an embodiment of the present invention;
fig. 6 is a graph of transmission efficiency of a wireless energy transmission system as a function of offset distance in an embodiment of the present invention.
The reference numerals are 1, the first winding, 2, the second winding, 3, the third winding, 4, the fourth winding, 5, the first capacitor, 6, the first resonance unit, 7, the second resonance unit, 8, the third resonance unit, 9, the fourth resonance unit, 10, the fifth resonance unit, 11, the sixth resonance unit, 12, the seventh resonance unit, 13, the eighth resonance unit, 14, the second resonance capacitor, 15, the third resonance capacitor, 16, the fourth resonance capacitor, 17, the fifth resonance capacitor, 18, the sixth resonance capacitor, 19, the seventh resonance capacitor, 20, the eighth resonance capacitor, 21, the ninth resonance capacitor, 22, the receiving coil, 23, the tenth resonance capacitor, 24, the fifth winding, 25, the sixth winding.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Embodiment one:
As shown in FIG. 1, the high-robustness magnetic resonance wireless energy transmission system based on the symmetrical distributed transmitting array provided by the embodiment of the invention comprises a source coil array, a transmitting coil array, a receiving coil array and a dielectric substrate, wherein the source coil array is printed on the back surface of a first layer of dielectric substrate, the transmitting coil array is printed on the back surface of a second layer of dielectric substrate, the front surface of the first layer of dielectric substrate and the back surface of the second layer of dielectric substrate are mutually contacted and overlapped, and the receiving coil array is printed on the back surface of a third layer of dielectric substrate at a certain distance from the second layer of dielectric substrate. The source coil array is formed by mutually nesting two layers of rectangular coils and one layer of circular coils, the current directions of the coils of the two adjacent layers are opposite, the magnetic resonance coupling and the magnetic field focusing in the direction where the magnetic resonance coupling is positioned are maximized, energy is transmitted to the transmitting coil array through coupling, the transmitting coil array is formed by rotationally arranging eight triangular coils, each coil is not contacted with the other, a uniform and stable magnetic field can be formed in the range of the transmitting coil array through the arrangement mode, and high transmission efficiency can still be obtained when the receiving coil 22 is offset.
Further, the transmitting end is composed of a source coil array and a transmitting coil array. The source coil array and the transmitting coil array are respectively printed on the two layers of medium substrates, the source coil array is printed on the back surface of the first layer of medium substrate, the transmitting coil array is printed on the back surface of the second layer of medium substrate, the connecting wire and the resonance capacitor are printed on the front surface, and the front surface of the first layer of medium substrate and the back surface of the second layer of medium substrate are overlapped together, so that the source coil array and the transmitting coil array can be conveniently coupled.
Further, as shown in fig. 2, the source coil array is printed on the first dielectric substrate and is composed of a first winding 1, a second winding 2, a third winding 3, a fourth winding 4 and a first capacitor 5. The first winding 1 is characterized in that one end of the first winding 1 is used for welding an SMA interface, the other end of the first winding is connected with the second winding 2, the second winding 2 is a single-turn rectangular coil, one end of the second winding is connected with the first winding 1, the other end of the second winding is connected with the third winding 3, meanwhile, a first capacitor 5 is connected with the middle of the first winding 1 in a reverse winding mode, the third winding 3 is a single-turn rectangular coil, one end of the third winding is connected with the second winding 2 and the middle of the fourth winding 4, the other end of the third winding is connected with the third winding 3, the direction of internal current is opposite to that of the second winding 2, the fourth winding 4 is a single-turn round coil, the direction of internal current is opposite to that of the third winding 3 in the center of the array, two ends of the third winding 3 are connected with each other to form a closed loop, and the two ends of the second winding 2 are respectively connected with the second winding 2 in a reverse winding mode, and the two ends of the second winding 2 are connected with each other in a closed loop, so that the source coil array resonates at the working frequency. This nested arrangement helps to maximize magnetic resonance coupling and magnetic field focusing in the direction of the magnetic resonance coupling, further enhancing magnetic field strength. And the parasitic capacitance obtained by the gaps between the rectangular coils is favorable for impedance matching, so that the stability of a magnetic field is ensured.
Further, as shown in fig. 3, the transmitting coil array is printed on a second layer dielectric substrate, and is formed by a first resonant unit 6, a second resonant unit 7, a third resonant unit 8, a fourth resonant unit 9, a fifth resonant unit 10, a sixth resonant unit 11, a seventh resonant unit 12 and an eighth resonant unit 13, wherein the first resonant unit 6 is connected with the second resonant capacitor 14 of the back surface through a metal through hole, the second resonant unit 7 is connected with the third resonant capacitor 15 of the back surface through a metal through hole, the third resonant unit 8 is connected with the fourth resonant capacitor 16 of the back surface through a metal through hole, the fourth resonant unit 9 is connected with the fifth resonant capacitor 17 of the back surface through a metal through hole, the fifth resonant unit 10 is connected with the sixth resonant capacitor 18 of the back surface through a metal through hole, the sixth resonant unit 11 is connected with the seventh resonant capacitor 19 of the back surface through a metal through hole, the seventh resonant unit 12 is connected with the eighth resonant capacitor 20 of the back surface through a metal through hole, and the eighth resonant unit 12 is connected with the eighth resonant unit through a metal through hole and the eighth resonant capacitor 16 of the back surface is arranged around the eighth resonant unit 13. The transmitting coil array consisting of eight triangular coils can form a uniform and stable magnetic field in a large range, and the magnetic field intensity is stronger due to the close arrangement of the coils, so that the coupling with the receiving coil 22 is enhanced, and the transmission efficiency is further enhanced.
Further, the receiving coil array is formed by a receiving coil 22, a load coil and a tenth resonance capacitor 23, and is printed on a third dielectric substrate, wherein the receiving coil 22 is formed by four turns of rectangular coils, the receiving coil is connected with the tenth resonance capacitor 23 on the back through a metal through hole, the load coil is arranged on the inner side of the receiving coil 22 and is formed by two sections of windings, two ends of a fifth winding 24 are connected with two ends of a sixth winding 25, one side of the sixth winding 25 is connected with the fifth winding 24, and the other end is used for welding an SMA interface. Energy is transferred to the receiving end by coupling between the receiving coil 22 and the transmitting coil array, and then to the load coil by coupling between the receiving coil 22 and the load coil.
Further, as shown in fig. 4, the receiving end is formed of a receiving coil array printed on the back surface of the third layer dielectric substrate. When the device is used, the receiving end and the transmitting end are separated by a certain distance, the middle part is air, and the receiving end and the transmitting end are opposite. Due to the design of the source coil array and the receiving coil array, a stable magnetic field with a wide range can be formed in the range of the transmitting array, and even if the receiving end is offset during use, the transmission efficiency can still be kept at a high level.
In the high-robustness magnetic resonance wireless energy transmission system based on the symmetrical distributed transmission array, energy enters the source coil array through the interface, the source coil array formed by mutually nesting two rectangular coils and a round coil is beneficial to maximizing magnetic field aggregation in the direction of magnetic resonance coupling, enhancing magnetic field strength, and transmitting the energy to each sub-coil through coupling with each sub-coil in the transmission coil array. While the close arrangement of the transmit coil array sub-coils enables a uniform and stable magnetic field to be generated over a wide range, facilitating coupling with the receive coil 22. Energy is transferred to the receiving end by coupling of the receiving coil 22 and each sub-coil of the transmitting coil array. Due to the design of the transmit coil array, the transmission efficiency can be maintained at a relatively stable level even if the receive coil 22 is offset during use.
Embodiment two:
The specific dimensions of the coil and the dielectric substrate in the embodiment of the invention are as follows, the size and the thickness of the first layer dielectric substrate and the second layer dielectric substrate are the same, the length is 135mm, the width is 135mm, and the thickness is 0.5mm; the source coil array is printed on a first layer of medium substrate, copper is coated with the thickness of 0.035mm, the length of the first winding 1 is 5mm, and the width is 1mm; the second winding 2 is a rectangular coil, the outer diameter length is 58mm, the width is 58mm, and the strip width is 1.9mm; the third winding 3 is a rectangular coil, the outer diameter length is 51mm, the width is 51mm, the strip width is 2.3mm, the fourth winding 4 is a round coil, the radius of the outer diameter is 22mm, the strip width is 2mm, the transmitting coil array is printed on a second layer of medium substrate, the thickness is 0.035mm, eight triangular sub-coils are all the same in size and are rotationally arranged according to different rotation centers, the triangular coil main body is an isosceles right triangle, the waist length of the isosceles right triangle coil is 60mm, the total number of turns is five, the strip width of the coil is 1.52mm, the turn pitch is 0.95mm,8 sub-coils are rotationally arranged according to different rotation centers, the resonant capacitor of the back face is connected through metal through holes on the medium substrate, the receiving coil 22 is printed on the back face of the third layer of medium substrate, the length of the medium substrate is 72mm, the width is 72mm, the receiving coil 22 is a rectangular coil with the thickness of 0.5mm, the strip width and the gaps are the same, the outer diameter of the coil is 70mm, the length and the width are the same, the width of the strip width is 2.1mm, the strip width is 1mm, the strip width is 1.1 mm, the resonant coil is formed by the single-turn coil, the resonant capacitor of the two sections are formed by the strip coil and the strip coil is connected with the first coil, the resonant capacitor is the second layer, the resonant coil is the resonant coil has the resonant coil is the resonant coil, the resonant coil has the resonant coil, the resonant coil has the resonant coil, the resonant coil and the resonant coil has the resonant coil and the resonant coil has the resonant coil and the coil has the resonant coil and the coil has the coil and the coil has the coil and the coil and the coil has the coil and the, the length of the sixth winding 25 is 6mm and the strip width is 1.8mm.
The magnetic resonance wireless energy transfer system consists of a source coil array, a transmit coil array, a receive coil 22 and a load coil printed on a dielectric plate of FR4 material. The dielectric plate had a thickness of 0.5mm, a relative permittivity of 4.4 and a loss tangent of 0.02. The first capacitor 5 is a model CC0805 series 10pF capacitor manufactured by Country corporation, the second resonance capacitor 14, the third resonance capacitor 15, the fourth resonance capacitor 16, the fifth resonance capacitor 17, the sixth resonance capacitor 18, the seventh resonance capacitor 19, the eighth resonance capacitor 20 and the ninth resonance capacitor 21 are GRM2165 series 180pF capacitors manufactured by Country corporation, and the tenth resonance capacitor 23 is a CC0805 series 75pF capacitor manufactured by Country corporation.
In summary, the invention provides a high-robustness magnetic resonance wireless energy transmission system based on a symmetric distributed transmitting array, which is applied to the field of near-field wireless energy transmission. As shown in fig. 5, the return loss parameter S11 of the wireless energy transmission system provided by the invention is smaller than 10dB at 13.56MHz, which indicates that good impedance matching can be achieved at this frequency. As shown in fig. 6, the wireless energy transmission system provided by the invention has the efficiency reaching 88% when the receiving and transmitting coils are fully aligned, and the efficiency can be kept 82% when the transverse offset distance reaches 50 mm.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but various modifications and improvements made by those skilled in the art to which the present invention pertains are made without departing from the spirit of the present invention, and all modifications and improvements fall within the scope of the present invention as defined in the appended claims.
Claims (9)
1. The high-robustness magnetic resonance wireless energy transmission system based on the symmetrical distributed transmitting array is characterized by comprising a source coil array, a transmitting coil array, a receiving coil array and a medium substrate, wherein the medium substrate comprises three layers, the source coil array, the transmitting coil array and the receiving coil array are respectively printed on the three layers of medium substrates, the transmitting coil array is formed by eight four-turn triangular coils which are arranged in a rotating mode around the center, and the robustness of magnetic field distribution is improved through compact arrangement among the coils.
2. The high robustness magnetic resonance wireless energy transmission system based on the symmetrical distributed transmission array according to claim 1, wherein the source coil array is printed on a first layer of the dielectric substrate, the transmission coil array is printed on a second layer of the dielectric substrate, the source coil array and the transmission coil array form a transmission end, and the source coil array transmits energy to the transmission coil array through coupling.
3. The high robustness magnetic resonance wireless energy transmission system based on the symmetrical distributed transmission array according to claim 1, wherein the source coil array is composed of three layers of coils nested inside and outside, and three layers of different types of coils are used for concentration of magnetic field and impedance matching through reverse winding.
4. The high-robustness magnetic resonance wireless energy transmission system based on the symmetrical distributed transmission array according to claim 1, wherein the receiving coil array comprises a receiving coil and a load coil, which are printed on the dielectric substrate of the third layer to form a receiving end.
5. The high robustness magnetic resonance wireless energy transfer system based on a symmetric distributed transmission array of claim 1, wherein the source coil array is comprised of a first winding, a second winding, a third winding, a fourth winding, and a first capacitor.
6. The high-robustness magnetic resonance wireless energy transmission system based on the symmetric distributed transmission array according to claim 5, wherein one end of the first winding is used for welding an SMA interface, the other end of the first winding is connected with the second winding, the second winding is a single-turn rectangular coil, one end of the second winding is connected with the first winding, the other end of the second winding is connected with the third winding at the outermost layer of the source coil array, meanwhile, the first capacitor is connected in the middle of the first winding in a reverse winding mode, the third winding is a single-turn rectangular coil, one end of the third winding is connected with the second winding, the other end of the third winding is connected with the fourth winding, the inner current direction is opposite to the direction of the second winding, the fourth winding is a single-turn round coil, two ends of the fourth winding are connected with the third winding at the center of the array, the middle of the second winding is a closed loop, the first capacitor and the two ends of the second capacitor are connected in a welding mode, and the first capacitor and the second capacitor are connected to the closed loop.
7. The high robustness magnetic resonance wireless energy transmission system based on the symmetric distributed transmission array according to claim 1, wherein the transmission coil array is composed of a first resonance unit, a second resonance unit, a third resonance unit, a fourth resonance unit, a fifth resonance unit, a sixth resonance unit, a seventh resonance unit, an eighth resonance unit, and a second resonance capacitor, a third resonance capacitor, a fourth resonance capacitor, a fifth resonance capacitor, a sixth resonance capacitor, a seventh resonance capacitor, an eighth resonance capacitor, and a ninth resonance capacitor.
8. The high-robustness magnetic resonance wireless energy transmission system based on the symmetrical distributed transmission array according to claim 7, wherein the first resonance unit is connected with the second resonance capacitor through a metal through hole, the second resonance unit is connected with the third resonance capacitor through a metal through hole, the third resonance unit is connected with the fourth resonance capacitor through a metal through hole, the fourth resonance unit is connected with the fifth resonance capacitor through a metal through hole, the fifth resonance unit is connected with the sixth resonance capacitor through a metal through hole, the sixth resonance unit is connected with the seventh resonance capacitor through a metal through hole, the seventh resonance unit is connected with the eighth resonance capacitor through a metal through hole, and the eighth resonance unit is connected with the ninth resonance capacitor through a metal through hole.
9. The high robustness magnetic resonance wireless energy transmission system based on the symmetric distributed transmission array according to claim 8, wherein the first resonance unit, the second resonance unit, the third resonance unit, the fourth resonance unit, the fifth resonance unit, the sixth resonance unit, the seventh resonance unit, and the eighth resonance unit are not in contact with each other and are rotationally arranged around a center.
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| CN214900368U (en) * | 2021-05-28 | 2021-11-26 | 福州大学 | Self-adaptive adjusting device applied to variable-distance wireless energy transmission |
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