CN104767284A - Wireless energy transmission system based on magnetic focusing effect in Mett material - Google Patents
Wireless energy transmission system based on magnetic focusing effect in Mett material Download PDFInfo
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- CN104767284A CN104767284A CN201510111757.2A CN201510111757A CN104767284A CN 104767284 A CN104767284 A CN 104767284A CN 201510111757 A CN201510111757 A CN 201510111757A CN 104767284 A CN104767284 A CN 104767284A
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Abstract
The invention relates to a wireless energy transmission system based on a magnetic focusing effect in Mett material. The wireless energy transmission system comprises a non-resonance exciting coil (1), a Mett material magnetic resonance focusing component (2), a Mett material magnetic resonance focusing component (3) and a non-resonance receiving coil (4). The two Mett material magnetic resonance focusing components with the same specific resonance frequency are used, and when spaced by a certain distance, the two Mett material magnetic resonance focusing components generate resonance due to the same resonance frequency to transmit energy. The transmission efficiency of the system will not change greatly along with increase of the distance, the system can achieve real-time transmission, and namely once the receiving end is closed, the transmitting end can perceive immediately and stop energy transmission at once. The system is good in directionality and only transmits the energy to the direction of the receiving end. Mett materials in the system have a sub-wavelength characteristic. The wireless energy transmission system has the advantages of instantaneous transmission, orientation, adjustable performance, controllability, non-radiation, miniaturization, high efficiency, medium and far distances, a simple technology, low cost and the like.
Description
Technical field
The present invention relates to a kind of radio energy transmission system, especially relate to a kind of wireless energy transfer system based on magnetic focusing effect in the special material of U.S..
Background technology
In recent years, wireless energy transmission technology receives people and more and more pays close attention to, and the research both at home and abroad in wireless power transmission all achieves great progress in depth & wideth two.Scientists it is also proposed various possible theory or scheme to realize the high efficiency of transmission of radio energy, as inductively, magnetic resonance coupling etc.And industrial quarters is also more and more denseer for the interest of wireless power transmission technology, the conceptual product that many moneys have certain practical value is developed, as the Lumia920 of Nokia company, the desktop wireless charging plan of Startbuck, the wireless charging television system etc. that Qingdao Haier and University Of Chongqing develop jointly.Multiple seminars such as domestic Tsing-Hua University, Zhejiang University, Harbin Institute of Technology, University Of Chongqing, Tianjin University of Technology, Southeast China University, south China science and engineering also propose separately has creationary radio energy-transmitting scheme, and combine with some embody rule of the industry such as automobile, communication, have devised the wireless charging system with Practical significance.But the difficult problem that current wireless energy transfer runs into is that transmission range is near, and efficiency is low, and directivity is poor.
Summary of the invention
Object of the present invention be exactly provide to overcome defect that above-mentioned prior art exists a kind of instantaneous transmission, magnetic field focusings, controllable, non-radiative, miniaturized, efficient, in closely at a distance, a kind of wireless energy transfer system based on magnetic focusing effect in the special material of U.S. of the advantage such as technique is simple, with low cost.
Object of the present invention can be achieved through the following technical solutions:
Based on a wireless energy transfer system for magnetic focusing effect in the special material of U.S., be made up of disresonance excitation coil, the U.S. special material magnetic resonance focusing block of transmitting terminal, the U.S. special material magnetic resonance focusing block of receiving terminal, disresonance receiving coil,
Described disresonance excitation coil connects voltage source or other driving sources,
Described disresonance receiving coil connects load or other energy storage devices,
The U.S. special material magnetic resonance focusing block of described transmitting terminal is made up of first medium plate and the first metallic copper landolsring array of being arranged on first medium plate front,
The U.S. special material magnetic resonance focusing block of described receiving terminal is made up of second medium plate and the second metallic copper landolsring array of being arranged on second medium plate front,
The U.S. special material magnetic resonance focusing block of transmitting terminal and the U.S. special material magnetic resonance focusing block of receiving terminal carry out wireless energy transfer because magnetic resonance evanscent field intercouples; The U.S. special material magnetic resonance focusing block of transmitting terminal and the U.S. special material magnetic resonance focusing block of receiving terminal transmitting terminal are operated in identical particular resonant frequency place.
Described disresonance excitation coil and the U.S. special material magnetic resonance focusing block of transmitting terminal form the driven antenna with directed near field focus effect jointly.
Described disresonance excitation coil and the U.S. special material magnetic resonance focusing block of receiving terminal form the reception antenna with directed near field focus effect jointly.
As preferred embodiment, disresonance excitation coil and disresonance receiving coil are the circular metal copper cash ring of diameter 10mm, transversal radius 2mm.It is the dielectric-slab of 1.6mm that first medium plate and second medium plate are the thickness that polytetrafluoroethylglass glass fiber makes, and dielectric constant is 2.65.First metallic copper landolsring array and the second metallic copper landolsring array are by the less metallic copper landolsring of radius and be distributed on the metallic copper landolsring forming orthohexagonal radius larger around it and form.
As preferred embodiment, the thickness of the first metallic copper landolsring array and the second metallic copper landolsring array is 0.035mm.The metallic copper landolsring external diameter that radius is larger is 30mm, and internal diameter is 28mm; The metallic copper landolsring external diameter that radius is less is 29mm, and internal diameter is 27mm, and corresponding operating frequency is 1GHz, and loading capacitance or increased in size can corresponding reduction operating frequencies.
Compared with prior art, the present invention has the following advantages:
(1) utilize U.S. special material magnetic focusing effect effectively can improve distance and the efficiency of non-radiative wireless energy transfer, the introducing of U.S. special material makes operating fields have better directivity, and the magnetic field of the direction of propagation is more concentrated, and then improves efficiency of transmission.
(2) introducing U.S. special material can more effective regulation and control magnetic distribution, and make operating fields have better directivity, the magnetic field being dissipated to space is less, thus makes greatly to reduce the polarization impact of human body and environment in energy transport.
(3) the sub-wavelength characteristic of the U.S. special material of magnetic is conducive to the miniaturization of non-radiative radio energy transmission system.
(4) present invention process is simple, with low cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the U.S. special material stratiform schematic diagram of magnetic;
Fig. 3 is the U.S. special material metal copper ring micro-structural of magnetic and substrate schematic diagram;
Fig. 4 be based on the wireless energy transfer system of magnetic focusing effect in the special material of U.S. and traditional magnetic resonance wireless energy transfer system in operating frequency magnetic field along the intensity distribution of the direction of propagation;
Fig. 5 is with or without the magnetic field distribution of wireless energy transfer system under 2cm transmission range of the special material of U.S. and the energy transfer efficiency figure of wireless energy transfer system under 5cm transmission range with or without the special material of U.S..
In figure: 1 is disresonance excitation coil, 2 is the U.S. special material magnetic resonance focusing block of transmitting terminal, and 3 is the U.S. special material magnetic resonance focusing block of receiving terminal, and 4 is transmitting terminal disresonance receiving coil, 5 is first medium plate, 6 is the first metallic copper landolsring array, and 7 is the metallic copper landolsring that radius is larger, and 8 is the metallic copper landolsring that radius is less, 9 is second medium plate, 10 is the second metallic copper landolsring array, and 11 is the metallic copper landolsring that radius is larger, and 12 is the metallic copper landolsring that radius is less.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
A kind of wireless energy transfer system based on magnetic focusing effect in the special material of U.S., as Figure 1-3, this system is made up of disresonance excitation coil 1, the U.S. special material magnetic resonance focusing block 2 of transmitting terminal, the U.S. special material magnetic resonance focusing block 3 of receiving terminal and a disresonance receiving coil 4 its structure.The U.S. special material magnetic resonance focusing block 2 of transmitting terminal and the U.S. special material magnetic resonance focusing block 3 of receiving terminal carry out wireless energy transfer because magnetic resonance evanscent field intercouples; The U.S. special material resonances focusing block of transmitting terminal and the U.S. special material resonances focusing block of receiving terminal transmitting terminal are operated in identical particular resonant frequency place.Disresonance excitation coil 1 connects voltage source or other driving sources, and disresonance receiving coil 4 connects load or other energy storage devices.
The U.S. special material resonances focusing block 2 of transmitting terminal magnetic is made up of first medium plate 5, first metallic copper landolsring array 6.Transmitting terminal first metallic copper landolsring array 6 is arranged in first medium plate 5 front, and transmitting terminal first metallic copper landolsring array 6 is made up of the larger metallic copper landolsring 7 of radius and the less metallic copper landolsring 8 of radius.
The U.S. special material magnetic resonance focusing block 3 of receiving terminal is made up of second medium plate 9, receiving terminal second metallic copper landolsring array 10.Transmitting terminal first metallic copper landolsring array 10 is arranged in second medium plate 9 front, and transmitting terminal second metallic copper landolsring array 10 is made up of the larger metallic copper landolsring 11 of radius and the less metallic copper landolsring 12 of radius.
The U.S. special material magnetic resonance focusing block 2 of transmitting terminal and the U.S. special material magnetic resonance focusing block 3 of receiving terminal carry out wireless energy transfer because magnetic resonance evanscent field intercouples; The U.S. special material magnetic resonance focusing block 2 of transmitting terminal and the U.S. special material magnetic resonance focusing block 3 of receiving terminal transmitting terminal are operated in identical particular resonant frequency place.
First medium plate 5 and second medium plate 9 are the dielectric-slab that polytetrafluoroethylglass glass fiber is made.The circular metal copper cash ring of disresonance excitation coil 1 and disresonance receiving coil to be diameter be 10mm, transversal radius 2mm, described first medium plate 5, the dielectric constant of second medium plate 9 is for being 2.65, and thickness of slab is 1.6mm; The thickness of transmitting terminal first metallic copper landolsring array 6 and receiving terminal second metallic copper landolsring array 10 is 0.035mm, and the cycle is 31mm; The metallic copper landolsring 7 that radius is larger, metallic copper landolsring 11 external diameter that radius is larger is 30mm, and internal diameter is 28mm; The metallic copper landolsring 8 that radius is less, metallic copper landolsring 12 external diameter that radius is less is 29mm, and internal diameter is 27mm.
U.S. special material refers to the common material being different from occurring in nature, has the artificial electromagnetic material of unusual electromagnetic property (dielectric constant, negative magnetic permeability, negative refractive index etc. as negative).The Cycle Length of U.S. special material is much smaller than electromagnetic wavelength, and total can describe with effective media theory the response of incident electromagnetic wave.Resonance coupling will occur between the electromagnetic field of local in each minute cells, this locally resonant mechanism can bring a lot of novel optical characteristics, almost can provide the dielectric constant of equivalence or the magnetic permeability of equivalence arbitrarily.
Adopt the present invention test the wireless energy transfer system based on magnetic focusing effect in the special material of U.S. that obtains in operating frequency magnetic field along the direction of propagation intensity distributions as shown in Figure 4, wherein (a) be based on the wireless energy transfer system of magnetic focusing effect in the special material of U.S. in operating frequency magnetic field along the intensity distribution of the direction of propagation, (b) for traditional magnetic resonance wireless energy transfer system in operating frequency magnetic field along the intensity distribution of the direction of propagation, by relatively knowing, add the large enhancing of field pole after the U.S. special material of magnetic, magnetic field longitudinally distributes more concentrated, more collimate.
The present invention's experiment is adopted to obtain a kind of wireless energy transfer system magnetic field based on magnetic focusing effect in the special material of U.S. at the U.S. special material 2cm place of range transmission end magnetic, test frequency scope is 0.5GHz ~ 1.5GHz, magnetic field intensity with the change of frequency as shown in Fig. 5 (a).Under 5cm transmission range, efficiency of transmission situation is as shown in Fig. 5 (b).By relatively knowing, after respectively add the U.S. special material of magnetic in energy transmitting terminal and energy acceptance end, magnetic field intensity is strengthened greatly, the magnetic line of force collimates more, efficiency strengthens 50%, volume is almost constant, the resonance frequency that the present invention uses, can according to the aspect such as transmission range and through-put power need select different Frequency points or frequency band.
Claims (8)
1. the wireless energy transfer system based on magnetic focusing effect in the special material of U.S., it is characterized in that, this transmission system is made up of disresonance excitation coil (1), the U.S. special material magnetic resonance focusing block (2) of transmitting terminal, the U.S. special material magnetic resonance focusing block (3) of receiving terminal, disresonance receiving coil (4)
Described disresonance excitation coil (1) connects voltage source or other driving sources,
Described disresonance receiving coil (4) connects load or other energy storage devices,
The U.S. special material magnetic resonance focusing block (2) of described transmitting terminal is made up of first medium plate (5) and the first metallic copper landolsring array (6) of being arranged on first medium plate (5) front,
The U.S. special material magnetic resonance focusing block (3) of described receiving terminal is made up of second medium plate (9) and the second metallic copper landolsring array (10) of being arranged on second medium plate (9) front,
The U.S. special material magnetic resonance focusing block (2) of transmitting terminal and the U.S. special material magnetic resonance focusing block (3) of receiving terminal carry out wireless energy transfer because magnetic resonance evanscent field intercouples; The U.S. special material magnetic resonance focusing block (2) of transmitting terminal and the U.S. special material magnetic resonance focusing block (3) of receiving terminal transmitting terminal are operated in identical particular resonant frequency place.
2. a kind of wireless energy transfer system based on magnetic focusing effect in the special material of U.S. according to claim 1, it is characterized in that, described disresonance excitation coil (1) and the U.S. special material magnetic resonance focusing block (2) of transmitting terminal form the driven antenna with directed near field focus effect jointly.
3. a kind of wireless energy transfer system based on magnetic focusing effect in the special material of U.S. according to claim 1, it is characterized in that, described disresonance excitation coil (4) and the U.S. special material magnetic resonance focusing block (3) of receiving terminal form the reception antenna with directed near field focus effect jointly.
4. a kind of wireless energy transfer system based on magnetic focusing effect in the special material of U.S. according to claim 1, it is characterized in that, described disresonance excitation coil (1) and disresonance receiving coil (4) they are diameter 10mm, the circular metal copper cash ring of transversal radius 2mm.
5. a kind of wireless energy transfer system based on magnetic focusing effect in the special material of U.S. according to claim 1, it is characterized in that, it is the dielectric-slab of 1.6mm that described first medium plate (5) and second medium plate (9) are the thickness that polytetrafluoroethylglass glass fiber makes, and dielectric constant is 2.65.
6. a kind of wireless energy transfer system based on magnetic focusing effect in the special material of U.S. according to claim 1, it is characterized in that, first metallic copper landolsring array (6) and the second metallic copper landolsring array (10) are by the less metallic copper landolsring (8 of radius, 12) and be distributed on and form the larger metallic copper landolsring of orthohexagonal radius (7,11) around it and form.
7. a kind of wireless energy transfer system based on magnetic focusing effect in the special material of U.S. according to claim 6, it is characterized in that, the thickness of the first metallic copper landolsring array (6) and the second metallic copper landolsring array (10) is 0.035mm.
8. a kind of wireless energy transfer system based on magnetic focusing effect in the special material of U.S. according to claim 6, is characterized in that, metallic copper landolsring (7, the 11) external diameter that radius is larger is 30mm, and internal diameter is 28mm; Metallic copper landolsring (8, the 12) external diameter that radius is less is 29mm, and internal diameter is 27mm.
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| CN201510111757.2A CN104767284A (en) | 2014-10-16 | 2015-03-13 | Wireless energy transmission system based on magnetic focusing effect in Mett material |
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| CN201410549300 | 2014-10-16 | ||
| CN2014105493005 | 2014-10-16 | ||
| CN201510111757.2A CN104767284A (en) | 2014-10-16 | 2015-03-13 | Wireless energy transmission system based on magnetic focusing effect in Mett material |
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| CN108233548A (en) * | 2018-01-18 | 2018-06-29 | 同济大学 | Magnetic field generation device and radio energy transmission system based on the U.S. special material of magnetic |
| CN108697899A (en) * | 2016-03-15 | 2018-10-23 | 威里利生命科学有限责任公司 | For to be implanted deep into device provide wireless power system |
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| US11309744B2 (en) | 2016-09-11 | 2022-04-19 | Verily Life Sciences Llc | Systems and methods for providing wireless power to deep implanted devices |
| CN108233548A (en) * | 2018-01-18 | 2018-06-29 | 同济大学 | Magnetic field generation device and radio energy transmission system based on the U.S. special material of magnetic |
| CN108233548B (en) * | 2018-01-18 | 2021-03-26 | 同济大学 | Magnetic field generating device based on magnetic Meite material and wireless power transmission system |
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