CN207459191U - A kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer - Google Patents
A kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer Download PDFInfo
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- CN207459191U CN207459191U CN201721587516.6U CN201721587516U CN207459191U CN 207459191 U CN207459191 U CN 207459191U CN 201721587516 U CN201721587516 U CN 201721587516U CN 207459191 U CN207459191 U CN 207459191U
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- screen layer
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- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 16
- 239000004411 aluminium Substances 0.000 claims description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 30
- 229910052782 aluminium Inorganic materials 0.000 claims description 30
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 claims description 5
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical group [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 26
- 230000008878 coupling Effects 0.000 abstract description 19
- 238000010168 coupling process Methods 0.000 abstract description 19
- 238000005859 coupling reaction Methods 0.000 abstract description 19
- 230000005855 radiation Effects 0.000 abstract description 5
- 230000005672 electromagnetic field Effects 0.000 abstract description 4
- 238000009510 drug design Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 47
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 13
- 229910052802 copper Inorganic materials 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000005611 electricity Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001808 coupling effect Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- Aerials With Secondary Devices (AREA)
Abstract
A kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer disclosed in the utility model, including the transmitting coil and receiving coil being oppositely arranged in a manner of contactless, two outsides of the transmitting coil and receiving coil are respectively provided with the shielded layer set corresponding thereto, and the transmitting coil and receiving coil are not less than 0.5cm with the distance between the shielded layer of its both sides respectively.A kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer of the utility model is by realizing the rational design of electro-magnetic screen layer ferrite, non-ferrite and antenna for the electromagnetic wave shielding based on electromagnetic wave near-field coupling radio energy transmission system nonclient area, influence of the transmitting device electromagnetic field radiation to human body and working environment is reduced, and improves the influence of setting because of electro-magnetic screen layer to the intensity of Transmission system magnetic coupling.
Description
Technical field
The utility model belongs to microwave radiation and antenna technical field, and in particular to a kind of that there is the non-of electro-magnetic screen layer to connect
Touch wireless electric energy transmission device antenna.
Background technology
Wireless power transmission (transmission of non-contact type wireless electric energy) mode based on non-radiative magnetic resonance near-field coupling is
Using two or more electromagnetic systems with identical resonance frequency and high quality factor, by the inductance for working in specific frequency
And capacitive coupling effect generates EMR electromagnetic resonance, makes full use of the near field harmonic technology of Electromagnetic Wave Propagation.The transmission mode has coupling
The advantages of high directivity, efficiency of transmission are high and transmission range is medium is closed, is suitble to energy transmission；But circuit, Antenna Design are wanted
Ask comparison high, it is necessary to design higher-order of oscillation emission system and high frequency power amplifier and quality factor it is higher resonance matching
Antenna.
It, can be by non-radiative magnetic resonance near-field coupling wireless power transmission in actual design radio energy transmission system
The Analysis of Electromagnetic Environment of system obtains each parameter of Transmission system to efficiency of transmission, distance and the influence of electromagnetic radiation environment, thus
Design a kind of radio transmission antenna with electro-magnetic screen layer.For example, a pair can be placed in non-radiation type field region
The matched antenna of resonance, they are vibrated with identical frequency, so as to which resonance occur inside non-radiation type magnetic field, form strong magnetic coupling
It closes, energy can be expeditiously transferred in several meters of distance ranges, and other objects in the range of this are not influenced, reach
To should strengthen the magnetic field of energy transmission workspace, and the magnetic field of nonclient area is reduced as far as to human body and equipment
The purpose of work influence.
Wireless transmitting system Antenna Design major consideration includes at present：1. antenna selection considers cost, efficiency of transmission
Etc. factors, mainly select copper wire or litz wire as antenna material；2. shielded layer non-ferrite selection, non-ferrite material is in electricity
Vortex can be generated under magnetic fields, the variation in former magnetic field can be hindered by being vortexed the electromagnetic field of generation, and vortex, which generates, can also be lost part
Magnetic field energy, the magnetic line of force can generate refraction in metal material, these are the Main Basiss of shielded layer design, consider different metal
Electrical conductivity it is different, because the energy of eddy-current loss is also different, what is selected at present is copper sheet layer；3. coil shape, common
Shape has circle, quadrangle, hexagon, polygon etc., is usually square and circular flat circle sandwich wound coil and stereo spiral
Coil；4. shielded layer ferrite selection, no magnetic core can reduce the electrodynamic capacity of antenna so that resonant frequency becomes smaller, because of sky
Gas magnetic resistance is more than core reluctance, effectively inhibits propagation of the magnetic line of force in nonclient area.
And existing wireless transmitting system antenna is primarily present following shortcoming：
First, existing radio transmission antenna is usually planar square-spiral coil or stereo spiral coil, the former exists
Wall and corner effect, and the latter's occupied space cost is big；
Second, it adds in shielded layer in resonant mode Magnetic coupled antennas and influences whether antenna mutual inductance, the coupling for reducing antenna
Intensity, and then reduce efficiency of transmission；Wound core is designed to that hollow area is mutually tied with solid area by some wireless transmitting systems
The structure of conjunction since hollow area air reluctance is more than the magnetic resistance of magnetic core, effectively shields the magnetic line of force, but reduces the coupling of coil
Intensity is closed, bottom antenna figure of merit is dropped, directly influences efficiency of transmission；
3rd, using unicoil as transmitting and receiving coil, mutual inductance reduces, and efficiency of transmission is reduced；
4th, because aerial coil and shielded layer are too close to making system be operated in overcoupling region, generate larger impedance
Loss, so as to influence the coupling of antenna.
Utility model content
For the disadvantages mentioned above that background technology is mentioned, the utility model pointedly proposes a kind of with electro-magnetic screen layer
Non-contact type wireless power transfer antenna.
Technical solution is used by the utility model：A kind of non-contact type wireless electric energy transmission with electro-magnetic screen layer
Device antenna, including the transmitting coil and receiving coil being oppositely arranged in a manner of contactless, the transmitting coil and reception line
Two outsides of circle are respectively provided with the shielded layer set corresponding thereto, the transmitting coil and receiving coil respectively with its both sides
The distance between shielded layer is not less than 0.5cm.
Preferably, it is contemplated that shield effectiveness and financial cost, the bottom of the shielded layer is aluminium sheet.
Preferably, in order to reduce the adverse effect that edge effect is brought as much as possible, the area of the aluminium sheet is more than described
The area of transmitting coil and receiving coil.And the thickness of the aluminium sheet is not more than 1mm.
Further, the bottom fitting of the shielded layer is provided with heat dissipating layer.
Further, the bottom of the shielded layer posts insulation diaphragm close to the one side of transmitting coil and receiving coil.
Further, the transmitting coil and receiving coil are respectively provided with ferrite layer.
Preferably, the ferrite layer is manganese-zinc ferrite piece.
Preferably, the transmitting coil and receiving coil are at least two layers of plane disc type spiral winding.
The beneficial effects of the utility model are：A kind of non-contact type wireless electricity with electro-magnetic screen layer of the utility model
Energy transmitting device antenna is by realizing for based on electricity the rational design of electro-magnetic screen layer ferrite, non-ferrite and antenna
The electromagnetic wave shielding of magnetic wave near-field coupling radio energy transmission system nonclient area reduces transmitting device electromagnetic field radiation to human body
With the influence of working environment, and the influence of setting because of electro-magnetic screen layer to the intensity of Transmission system magnetic coupling is improved.Its
MnZn ferrite material is added in transmitting antenna and reception antenna, carries high magnetic field magnetization, it is strong to increase aerial coil coupling
Degree；It is combined using multilayer planar disc type spiral winding, improves the coupling efficiency of wireless transmitting system, and by aerial coil with shielding
It covers layer and keeps more than 0.5cm distances, avoid because coil working in overcoupling phase zone, generates frequency when coil is close to shielded layer
Separating phenomenon, the problem of so as to influence the coupling effect of antenna.
Description of the drawings
Fig. 1 is a kind of structure of the non-contact type wireless power transfer antenna with electro-magnetic screen layer of the utility model
Schematic diagram；
Fig. 2 is the part-structure sectional view of Fig. 1.
In figure, 1. manganese-zinc ferrite pieces, 2. double-deck copper coils, 3. insulation diaphragms, 4. aluminium sheets.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of knot of non-contact type wireless power transfer antenna with electro-magnetic screen layer provided by the utility model
Structure as depicted in figs. 1 and 2, including the transmitting coil and receiving coil being oppositely arranged in a manner of contactless, transmitting coil and connects
Take-up circle can select double-deck copper coil 2.The shielding set corresponding thereto is respectively provided on the outside of transmitting coil and receiving coil
Layer, the distance between coil and shielded layer are influenced for eddy-current loss, as distance becomes smaller between coil and metallic plate, vortex
Loss can sharply increase, and consider space cost, the distance between coil and shielded layer minimum are arranged to 0.5cm, certainly, are more than
0.5cm is better.
Preferably, the bottom of the shielded layer of the utility model is aluminium sheet 4, and the bottom of aluminium sheet 4 is scattering layer, why is used
Aluminium sheet 4, without using copper coin and iron plate, be because the relative permeability of iron is higher, generated in iron plate vortex much larger than copper and
Aluminium, and can also increase therewith with the increase vortex of frequency.Because copper is different with the electrical conductivity of aluminium, the vortex in copper coin and iron plate
Certain difference can be generated, is not much different, the financial cost of aluminium and copper is considered, selects aluminium sheet 4 as shielded layer primer.
The shielding mechanism of metallic plate is since the vortex that material internal generates generates opposing magnetic field, between emission source
It cancels out each other to play shielding action in magnetic field.Since aluminium sheet 4 in wireless electric energy transmission device workspace content is also easy to produce magnetic force
The congruence is gathered, and in order to reduce the adverse effect that edge effect comes to peripheral band as far as possible, the utility model further sets shielding
4 area of aluminium sheet of layer bottom is more than area coil, and thickness also becomes smaller as far as possible, reaches below 1mm, can so reduce electromagnetism
Field is in the eddy-current loss of aluminium sheet 4.
Because shielded layer is placed in the outside of transmitting and receiving coil the magnetic field of workspace between system coil is integrally reduced,
Influence efficiency of transmission.For this purpose, to consider that the magnetic field for inhibiting nonclient area simultaneously compensates the magnetic field of workspace.In emission lines
Circle helps to increase the magnetic field of system work area, improves the stiffness of coupling between coil with setting ferrite layer in receiving coil.
Costly, since the presence of the factors such as magnetic hysteresis can generate excess loss, the utility model uses Ferrite Material price
Few, the cost-effective manganese-zinc ferrite piece 1 of magnetic hystersis loss.In order to further improve the stiffness of coupling of system, the hair of the present embodiment
Ray circle and receiving coil are arranged to the structure that plane disc type spiral winding is connected, apart from identical using two layers of copper coil 2
In the case of, the mutual inductance value of double-layer coil is 3-4 times of single layer coil.Certainly, the utility model also selects the coil of multilayered structure
Antenna can so greatly increase the stiffness of coupling of transmitting coil and receiving coil in the case where losing minimum volume, so as to
Improve system transport capacity.
Further, because 4 top of aluminium sheet is passes to the coil of high-frequency alternating current, therefore close to transmitting coil and connect in aluminium sheet
Post insulation diaphragm 3 in the one side of take-up circle.
It radiates at work for the ease of aluminium sheet, heat dissipating layer is sticked in the aluminium sheet 4 of bottom, improve the work effect of shielded layer
Rate.
For synthesis, a kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer of the utility model
The characteristics of be：
1. the shielding mechanism of metallic plate is since the vortex that material internal generates generates opposing magnetic field, between emission source
Magnetic field cancel out each other to play shielding action, the utility model electro-magnetic screen layer bottom uses aluminium sheet, because of copper and the electricity of aluminium
Conductance is different, and the vortex in copper coin and aluminium sheet can generate certain difference, be not much different, and considers the financial cost of aluminium and copper, this
Utility model selects bottom of the aluminium sheet as shielded layer；
2. it is converged since aluminium sheet is also easy to produce the magnetic line of force in wireless electric energy transmission device workspace content, in order to reduce as far as possible
The adverse effect that edge effect comes to peripheral band, the aluminium sheet area of the utility model design shielded layer bottom are more than area coil,
Thickness is accomplished as far as possible no more than 1mm, so as to reduce eddy-current loss of the electromagnetic field in aluminium sheet.In addition, coil and aluminium sheet away from
Also have an impact from for eddy-current loss, as distance becomes smaller between coil and metallic plate, eddy-current loss can sharply increase.Consider
Coil antenna is no less than 0.5 centimetre by space cost apart from shielded layer；
3. consider that the magnetic field for inhibiting nonclient area simultaneously compensates the magnetic field of workspace.In transmitting coil with receiving line
Ferrite Material is filled in circle, helps to increase the magnetic field of system work area, improves the stiffness of coupling between coil.Ferrite material
Expect price costly, since the presence of the factors such as magnetic hysteresis can generate excess loss, the utility model uses magnetic hystersis loss
Less, cost-effective manganese-zinc ferrite piece.Further improve the stiffness of coupling of system.
4. it is cascaded using at least two layers of plane disc type spiral winding as transmitting and receiving coil, apart from phase
With in the case of, the mutual inductance value of double-layer coil is 3-4 times of single layer coil, and the antenna of multilayered structure will lose minimum volume
In the case of greatly increase the stiffness of coupling of transmitting coil and receiving coil, so as to improve system transport capacity.
Claims (9)
1. a kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer, which is characterized in that including being connect with non-
Two outsides of the transmitting coil and receiving coil that touch mode is oppositely arranged, the transmitting coil and receiving coil are respectively provided with
The shielded layer set corresponding thereto, the transmitting coil and receiving coil be not small with the distance between the shielded layer of its both sides respectively
In 0.5cm.
2. a kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer as described in claim 1, special
Sign is that the bottom of the shielded layer is aluminium sheet.
3. a kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer as claimed in claim 2, special
Sign is that the area of the aluminium sheet is more than the area of the transmitting coil and receiving coil.
4. a kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer as claimed in claim 3, special
Sign is that the thickness of the aluminium sheet is not more than 1mm.
5. a kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer as claimed in claim 2, special
Sign is that the bottom fitting of the shielded layer is provided with heat dissipating layer.
6. a kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer as claimed in claim 2, special
Sign is that the bottom of the shielded layer posts insulation diaphragm close to the one side of transmitting coil and receiving coil.
7. a kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer as described in claim 1, special
Sign is that the transmitting coil and receiving coil are respectively provided with ferrite layer.
8. a kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer as claimed in claim 7, special
Sign is that the ferrite layer is manganese-zinc ferrite piece.
9. a kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer as described in claim 1,7 or 8,
It is characterized in that, the transmitting coil and receiving coil are at least two layers of plane disc type spiral winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721587516.6U CN207459191U (en) | 2017-11-23 | 2017-11-23 | A kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721587516.6U CN207459191U (en) | 2017-11-23 | 2017-11-23 | A kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer |
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|---|---|
| CN207459191U true CN207459191U (en) | 2018-06-05 |
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|---|---|---|---|
| CN201721587516.6U Expired - Fee Related CN207459191U (en) | 2017-11-23 | 2017-11-23 | A kind of non-contact type wireless power transfer antenna with electro-magnetic screen layer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108297731A (en) * | 2018-03-20 | 2018-07-20 | 广东工业大学华立学院 | A kind of wireless charging system for electric automobile |
| CN109637794A (en) * | 2018-12-21 | 2019-04-16 | 深圳先进技术研究院 | A kind of coil mould group |
| CN110112840A (en) * | 2019-06-14 | 2019-08-09 | 青岛大学 | A kind of wireless power transmission magnetic coupler constituted based on composite shielding layer |
| CN110138104A (en) * | 2019-06-14 | 2019-08-16 | 青岛大学 | A kind of composite shielding layer for wireless power transmission magnetic coupler |
| CN110620408A (en) * | 2018-06-20 | 2019-12-27 | 现代自动车株式会社 | Wireless charger with electromagnetic shielding function |
| CN113436867A (en) * | 2021-07-14 | 2021-09-24 | 上海电机学院 | Magnetic shielding coil assembly for wireless charging of electric automobile |
| WO2021232523A1 (en) * | 2020-05-21 | 2021-11-25 | 深圳市知用电子有限公司 | Isolated signal transmission apparatus |
| CN114814958A (en) * | 2022-07-01 | 2022-07-29 | 河北帝斯杰奥科技有限公司 | Receiving device and analysis system for earth polarization excimer radiation |
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- 2017-11-23 CN CN201721587516.6U patent/CN207459191U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108297731A (en) * | 2018-03-20 | 2018-07-20 | 广东工业大学华立学院 | A kind of wireless charging system for electric automobile |
| CN108297731B (en) * | 2018-03-20 | 2023-10-13 | 广东工业大学华立学院 | A wireless charging system for electric vehicles |
| CN110620408A (en) * | 2018-06-20 | 2019-12-27 | 现代自动车株式会社 | Wireless charger with electromagnetic shielding function |
| CN109637794A (en) * | 2018-12-21 | 2019-04-16 | 深圳先进技术研究院 | A kind of coil mould group |
| CN110112840B (en) * | 2019-06-14 | 2023-10-03 | 青岛大学 | Wireless power transmission magnetic coupler based on composite shielding layer |
| CN110112840A (en) * | 2019-06-14 | 2019-08-09 | 青岛大学 | A kind of wireless power transmission magnetic coupler constituted based on composite shielding layer |
| CN110138104A (en) * | 2019-06-14 | 2019-08-16 | 青岛大学 | A kind of composite shielding layer for wireless power transmission magnetic coupler |
| CN110138104B (en) * | 2019-06-14 | 2023-11-17 | 青岛大学 | Composite shielding layer for wireless power transmission magnetic coupler |
| WO2021232523A1 (en) * | 2020-05-21 | 2021-11-25 | 深圳市知用电子有限公司 | Isolated signal transmission apparatus |
| US11881639B2 (en) | 2020-05-21 | 2024-01-23 | Shenzhen Zhiyong Electronics Co., Ltd. | Signal isolation and transmission device |
| CN113436867B (en) * | 2021-07-14 | 2023-08-29 | 上海电机学院 | A magnetically shielded coil assembly for wireless charging of electric vehicles |
| CN113436867A (en) * | 2021-07-14 | 2021-09-24 | 上海电机学院 | Magnetic shielding coil assembly for wireless charging of electric automobile |
| CN114814958B (en) * | 2022-07-01 | 2022-09-23 | 河北帝斯杰奥科技有限公司 | Receiving device and analysis system for earth polarization excimer radiation |
| CN114814958A (en) * | 2022-07-01 | 2022-07-29 | 河北帝斯杰奥科技有限公司 | Receiving device and analysis system for earth polarization excimer radiation |
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