CN106998103A - Wide area free space optional position wireless energy transfer transmission antenna device and its energy transmission method - Google Patents
Wide area free space optional position wireless energy transfer transmission antenna device and its energy transmission method Download PDFInfo
- Publication number
- CN106998103A CN106998103A CN201710329727.8A CN201710329727A CN106998103A CN 106998103 A CN106998103 A CN 106998103A CN 201710329727 A CN201710329727 A CN 201710329727A CN 106998103 A CN106998103 A CN 106998103A
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- China
- Prior art keywords
- free space
- optional position
- metal
- helical structure
- wide area
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- 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
Abstract
The invention discloses a kind of wide area free space optional position wireless energy transfer transmission antenna device and its energy transmission method；Wireless energy transmission device is identical by multiple structures up and down, and is the metal helical structure for supporting magnetic dipole pattern；The natural resonance frequency of metal helical structure is identical above and below wireless energy transmission device, thus occurs the magnetic resonance coupling in vertical direction.With each subresonance, it is placed in the middle of metal helical structure magnetic resonance chamber in the receiving coil of optional position and has voltage generation.By producing many subresonances, receiving coil surface will gather enough energy, so receive end-coil and receive energy in this non-radiative alternating magnetic field, so as to complete magnetic energy to the conversion of electric energy, realize the wireless energy transfer of wide area free space optional position.
Description
Technical field
The invention belongs to wireless energy transfer or wireless power transfer field, and in particular to a kind of wide area free space is any
Position wireless energy transfer transmission antenna device and its energy transmission method.
Background technology
Wireless energy transfer or wireless power transfer, refer to that energy is transferred to a process of electric loading from energy source, this
Individual process be not it is traditional completed with wired, but by being wirelessly transferred realization.The key technology of wireless energy transfer is
Efficient transmitting and receiving antenna device, are maximized with the distance for causing infinite energy to transmit, while the position of wireless energy transfer
Put liberalization.Energy in feed-in transmitting antenna can efficiently be launched, and be connect by being wirelessly transferred for certain distance
Antenna assembly is received efficiently to receive in free space.
The transmitting of existing wireless energy transfer and receiving antenna device are mainly resonance coil, pass through coil electromagnetism mutual inductance
Principle or magnetic resonance principle realize being wirelessly transferred for energy.Electric energy transmitting coil is arranged in charging base, and receiving coil is then pacified
Dress is in the electronic device.The wireless power transmission mode in the market of this principle has been present.The wireless charging device requires emission lines
Enclose with receiving coil apart from very little, and with the increase of transmitting coil and receiving coil distance, infinite energy efficiency of transmission
Quick reduction, significantly limit the radius of action of electronic product.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, present invention is primarily based on another wireless energy transfer machine
System, i.e., open cavity principle come provide a kind of wide area free space optional position wireless energy transfer transmission antenna device with
Realize the liberalization of wireless energy transfer.
The wide area free space optional position wireless energy transfer transmission antenna device of the present invention, including multiple structure phases
Metal helical structure that is same and being support magnetic dipole pattern, the helical centre of two neighboring metal helical structure is overlapped.
The distance of the spiral center of two neighboring metal helical structure is less than 3R, and wherein R is the radius of metal helical structure.The present invention's
Multiple metal helical structures meeting phase mutual resonances simultaneously produce strong energy exchange by the space between adjacent metal helical structure,
And the magnetic field of alternation is produced in the free space between metal helical structure, so as to realize electric energy to full of whole resonance cavity space
Between alternating magnetic field conversion.Excitaton source is adjusted, makes the wireless energy transmission device with a certain resonance frequency；It is non-that it is produced
Radiation field is to convert electrical current into magnetic field, and immanent energy channel is formed between multiple metal helical structures；Work as conduct
When the wire coil of wireless energy receiving terminal is placed on the free space optional position and has certain angle with alternating magnetic field, with
And more voltages generations are had in each subresonance, receiving coil, so as to realize wide area free space optional position energy
It is wirelessly transferred.
It is preferred that, described metal helical structure is the metal helical structure of arbitrary shape, such as metal flat or three-dimensional spiral shell
Structure is revolved, the mutual set-up mode of two neighboring metal helical structure is any relative position.Further, part is adjacent
The helical centre of metal helical structure is overlapped or the helical centre of whole metal helical structures is overlapped, and helical centre is overlapped
Two mutual set-up modes of metal helical structure for be symmetrical arranged or antisymmetry set.
It is preferred that, described metal helical structure includes a spiral center and one or some metal spiral arms；When
When spiral center connects many metal spiral arms, many described metal spiral arm rotation directions are identical with structure, and are uniformly connected to
On spiral center.
It is preferred that, it is identical and be to support appointing for magnetic dipole pattern that described transmission antenna device includes two structures
The metal helical structure for shape of anticipating, the helical centre of two metal helical structures is overlapped.
It is preferred that, described metal helical structure is metal flat or spiral structure, two described metal spirals
The mutual set-up mode of structure is to be symmetrical arranged or antisymmetry setting.
More preferred, described two or more metal helical structures are setting up and down and helical centre is overlapped.
The wireless energy transfer method of the wide area free space optional position wireless energy transfer transmission antenna device is such as
Under：
Excitaton source is set near the metal helical structure of lower end, because two or more metal helical structure structures are identical
And the pole subpattern of magnetic coupling is supported, therefore the resonant frequency of both magnetic coupling pole subpatterns is the same, two or more metal spiral knots
Resonance occurs between structure and strong energy exchange is produced by the space between adjacent metal helical structure；Two of which low frequency
A kind of non-radiative alternating magnetic field all is produced in the space in the middle of two magnetic resonance chambers up and down with the division resonance mode of high frequency,
So as to convert electrical current into alternating magnetic field and be full of whole space；
Adjustment excites source frequency, makes the wide area free space optional position wireless energy transfer transmission antenna device with a certain
Frequency is vibrated；The non-radiative magnetic field that its resonance is produced is to convert electrical current into alternating magnetic field and full of two or more metal spirals
Whole space between structure；When receiving coil is placed on the optional position of the free space and has angle with alternation oscillating magnetic field
When, more voltages can be produced with each subresonance as the receiving coil of wireless energy receiving terminal, so as to realize wide area certainly
By being wirelessly transferred for space optional position energy.
It is preferred that, the resonant frequency of described receiving coil and one of resonant mode of the metal helical structure resonator
The frequency of formula is identical.
Compared with prior art, the invention provides a kind of wide area free space based on open cavity principle is any
Position wireless energy transfer transmission antenna device and its energy transmission method.Solve and require transmitting coil in the prior art and connect
Take-up circle apart from very little the problem of, while also solving asking for the moving freely of wireless energy transform device of prior art
Inscribe, (second generation wireless energy is passed for this and traditional coil manifold type (first generation wireless energy transfer principle) and magnetic resonance
Defeated principle) there is significant difference.
The frequency of the magnetic coupling resonance of the present invention is determined by the geometric parameter of metal helical structure, is thus infinite energy
Transmission receives transmission antenna device there is provided more free design method.
Brief description of the drawings
Fig. 1 is the open type magnetic resonance in the specific embodiment of the invention by vertical coupled metal helical structure construction
Chamber schematic diagram；
Fig. 2 is the near field magnetic coupling response spectrum of two vertical coupled metal helical structures；
Fig. 3 is the electric current of the mode of resonance of two vertical coupled metal helical structures, Distribution of Magnetic Field.(a) it is the first point
Split the CURRENT DISTRIBUTION of pattern；(b) it is first schizotype Distribution of Magnetic Field.(c) it is the CURRENT DISTRIBUTION of second schizotype；
(d) it is second schizotype Distribution of Magnetic Field.
Embodiment
The wide area free space optional position wireless energy transfer transmitting day based on open cavity principle of the present invention
Line apparatus needs the resonator system that two or more are interconnected, and is made up respectively of a kind of metal spiral magnetic resonance configurations, rather than
Traditional magnetic induction coil.Make the wireless energy transmission device with a certain resonance frequency by adjusting tranmitting frequency, it is produced
Raw is diffused in Ordinary Electromagnetic Wave everywhere, but a kind of non-radiative is full of whole between upper two metal helical structures
The magnetic field in space, that is, convert electrical current into alternating magnetic field, freely empty between two or more metal spiral magnetic resonance configurations
It is interior to form a kind of immanent energy channel.When the wire coil as receiving terminal is placed on any position of the free space
Put and formed an angle with alternating magnetic field, with each subresonance, receive and more voltages generations are had in end-coil.By production
Raw many subresonances, receiving terminal coil surface will gather enough energy, and such receiving terminal connects in this non-radiative alternating magnetic field
Energy is received, so as to complete magnetic energy to the conversion of electric energy, being wirelessly transferred for wide area free space optional position electric energy is realized.
Embodiment 1
Magnetic resonance chamber up and down is all the metal spiral knot for the support magnetic dipole pattern being made up of a metal spiral arm
Structure.The resonant frequency of the magnetic dipole pattern of the metal helical structure is determined by the geometric parameter of metal helical structure.In this article
The geometric parameter of middle metal helical structure is：The wide w=0.005m of metal spiral arm, is enclosed, metal spiral around central rotation 15.6
The distance between arm is d=0.015m.As shown in Figure 1.The distance between two metal helical structures are h=0.5m up and down.
Because the metal structure is a kind of helical structure, so the chamber of magnetic resonance up and down being disposed vertically has a variety of positions
Type, respectively symmetrical structure and antisymmetry structure or any relative position.We take structure symmetrical above and below to make in the present invention
For example, as shown in Figure 1.The wireless energy in wide area free space optional position that it is in symmetrical bit-type based on metal helical structure that Fig. 1, which is,
Measure transmitting antenna assembly.Black arrow represents excitaton source and probe.Up and down between double layer of metal helical structure it is vertical away from
From for h=0.5m.Whole vertical coupled metal helical structure is as wireless energy transmission device, and excitaton source is placed on lower end gold
Belong to beside spiral arm.Field probe is placed in the space on the metal helical structure of upper end.Because magnetic resonance chamber is same up and down
Plant metal helical structure and support the pole subpattern of magnetic coupling, so the resonant frequency of their magnetic dipole pattern is the same.So
Metal helical structure intercouples and produces strong energy exchange up and down, so as to convert electrical current into the friendship full of whole space
Varying magnetic field.Optional position and and alternation in space above and below be placed on as the coil of receiving terminal between metal helical structure
When magnetic field is at a certain angle, with each subresonance, receives and more voltages generations are had in end-coil.It is multiple by producing
Resonance, receiving terminal coil surface will gather enough energy, and such receiving terminal receives energy in this non-radiative alternating magnetic field,
So as to complete magnetic energy to the conversion of electric energy, being wirelessly transferred for wide area free space optional position electric energy is realized.
Embodiment 2
Following metal helical structure and detect the magnetic field near the metal helical structure of upper end to illustrate energy by exciting
Be wirelessly transferred.Grey shown in solid, gold in the near field resonance spectrum of single metal helical structure, such as Fig. 2 is tested first
Belong to helical structure in Ωm=6.91MHz resonant frequency supports a magnetic dipole mode of resonance.Then symmetrical structure is tested
It is black shown in solid near field resonance spectrum, such as Fig. 2, because metal helical structure intercouples up and down, single metal helical structure
The division of magnetic dipole mode of resonance turn into two patterns.The resonant frequency of two schizotypes is respectively
With
How energy is realized for a further understanding of the wide area free space optional position wireless energy transfer emitter
Be wirelessly transferred, depict low frequency schizotypeElectric current, Distribution of Magnetic Field figure, respectively such as Fig. 3 (a) and Fig. 3 (b) institutes
Show.It can be seen that, in the mode of resonance, the reverse loop of current of a closure is all supported on two metal helical structures up and down,
There is strong energy material is thus formed symmetrical magnetic dipole mode of resonance, and in space between two metal helical structures
Amount is exchanged, so that electric energy is converted into immanent alternating magnetic field between two metal helical structures, shown in such as Fig. 3 (b).When
Receiving terminal wire coil is placed on the optional position in space and the folder into certain with alternating magnetic field between two metal helical structures
During angle, this receives wire coil will receive energy with resonance, so as to realize based on the wide of open type magnetic resonator mechanism
The wireless energy transfer of domain free space optional position.
When the resonant frequency of the wide area free space optional position wireless energy transfer emitter is in high frequency split-mode
FormulaWhen can also realize free space optional position wireless energy transmission.Depict high frequency schizotype's
Electric current, Distribution of Magnetic Field figure, respectively as shown in Fig. 3 (c) and Fig. 3 (d).It can be seen that, in the mode of resonance, two metals up and down
A forward direction and a reverse closed path ring are supported on helical structure respectively, material is thus formed antisymmetry magnetic dipole is humorous
Shake pattern, and have strong energy exchange in the space between two metal helical structures, so that electric energy is in two metals
Immanent alternating magnetic field is converted between helical structure, shown in such as Fig. 3 (d).When receiving terminal wire coil is placed on two
Between metal helical structure the optional position in space and and alternating magnetic field it is at a certain angle when, this receives wire coil will be with
Resonance and receive energy, so as to realize the wireless energy of the wide area free space optional position based on open type magnetic resonator mechanism
Amount transmission.
Claims (10)
1. a kind of wide area free space optional position wireless energy transfer transmission antenna device, it is characterised in that including multiple structures
It is identical and be support magnetic dipole pattern metal helical structure, the spiral center of two neighboring metal helical structure away from
From less than 3R, wherein R is the radius of metal helical structure.
2. wide area free space optional position wireless energy transfer transmission antenna device according to claim 1, its feature
It is metal flat helical structure to be described metal helical structure.
3. wide area free space optional position wireless energy transfer transmission antenna device according to claim 2, its feature
It is that the helical centre coincidence of the adjacent metal helical structure in part or the helical centre of whole metal helical structures are overlapped.
4. wide area free space optional position wireless energy transfer transmission antenna device according to claim 3, its feature
It is that described metal helical structure includes a spiral center and some metal spiral arms；When spiral center connects many gold
When belonging to spiral arm, many described metal spiral arm rotation directions are identical with structure, and are uniformly connected on spiral center.
5. wide area free space optional position wireless energy transfer transmission antenna device according to claim 1, its feature
It is that described transmission antenna device is identical and be the metal helical structure group for supporting magnetic dipole pattern by two structures
Into.
6. wide area free space optional position wireless energy transfer transmission antenna device according to claim 4, its feature
It is metal flat helical structure or spiral structure to be described metal helical structure.
7. wide area free space optional position wireless energy transfer transmission antenna device according to claim 5, its feature
It is that two described metal helical structures are setting up and down and helical centre is overlapped, two metal helical structures are in symmetrical up and down
Set or antisymmetry is set.
8. wide area free space optional position wireless energy transfer transmission antenna device according to claim 6, its feature
It is that described metal helical structure includes a spiral center and some metal spiral arms；When spiral center connects many gold
When belonging to spiral arm, many described metal spiral arm rotation directions are identical with structure, and are uniformly connected on spiral center.
9. a kind of wide area free space optional position wireless energy transfer method as claimed in claim 5, it is characterised in that：
Excitaton source is set near the metal helical structure of lower end, because two metal helical structure structures are identical and support magnetic coupling
Pole subpattern, therefore the resonant frequency of both magnetic resonance patterns is the same, and resonance occurs between two metal helical structures and produces
Raw strong energy exchange；
Adjustment excites source frequency, makes the wide area free space optional position wireless energy transfer transmission antenna device with a certain resonance
Frequency is vibrated；The non-radiative magnetic field that its resonance is produced be convert electrical current into alternating magnetic field and full of two metal helical structures it
Between whole space；When receiving coil is placed on the optional position of the free space and has angle with oscillating magnetic field, nothing is used as
The receiving coil of heat input receiving terminal can produce more voltages with each subresonance, so as to realize that wide area free space is any
Position energy is wirelessly transferred.
10. wireless energy transfer method according to claim 9, it is characterised in that the resonant frequency of described receiving coil
It is identical with the frequency of the mode of resonance of the vertical alternating magnetic field of one of generation of the metal helical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710329727.8A CN106998103A (en) | 2017-05-11 | 2017-05-11 | Wide area free space optional position wireless energy transfer transmission antenna device and its energy transmission method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710329727.8A CN106998103A (en) | 2017-05-11 | 2017-05-11 | Wide area free space optional position wireless energy transfer transmission antenna device and its energy transmission method |
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| Publication Number | Publication Date |
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| CN106998103A true CN106998103A (en) | 2017-08-01 |
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| CN201710329727.8A Pending CN106998103A (en) | 2017-05-11 | 2017-05-11 | Wide area free space optional position wireless energy transfer transmission antenna device and its energy transmission method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234230A (en) * | 2007-12-27 | 2008-08-06 | 中国人民解放军第三军医大学野战外科研究所 | Electromagnetic induction energy supplying device for implantation type medical equipment |
| US20080278264A1 (en) * | 2005-07-12 | 2008-11-13 | Aristeidis Karalis | Wireless energy transfer |
| CN102347640A (en) * | 2011-06-09 | 2012-02-08 | 东南大学 | Wireless energy transmission device |
| CN102647029A (en) * | 2011-10-31 | 2012-08-22 | 深圳光启高等理工研究院 | Wireless energy transmission system |
| CN103296776A (en) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | Wireless energy transmission system |
| CN105610248A (en) * | 2016-01-27 | 2016-05-25 | 中国科学院微电子研究所 | Coupling power supply circuit and method of implantable electronic biologic sensor |
| CN206932073U (en) * | 2017-05-11 | 2018-01-26 | 深圳凌波近场科技有限公司 | A kind of wide area free space optional position wireless energy transfer transmission antenna device |
-
2017
- 2017-05-11 CN CN201710329727.8A patent/CN106998103A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080278264A1 (en) * | 2005-07-12 | 2008-11-13 | Aristeidis Karalis | Wireless energy transfer |
| CN101234230A (en) * | 2007-12-27 | 2008-08-06 | 中国人民解放军第三军医大学野战外科研究所 | Electromagnetic induction energy supplying device for implantation type medical equipment |
| CN102347640A (en) * | 2011-06-09 | 2012-02-08 | 东南大学 | Wireless energy transmission device |
| CN102647029A (en) * | 2011-10-31 | 2012-08-22 | 深圳光启高等理工研究院 | Wireless energy transmission system |
| CN103296776A (en) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | Wireless energy transmission system |
| CN105610248A (en) * | 2016-01-27 | 2016-05-25 | 中国科学院微电子研究所 | Coupling power supply circuit and method of implantable electronic biologic sensor |
| CN206932073U (en) * | 2017-05-11 | 2018-01-26 | 深圳凌波近场科技有限公司 | A kind of wide area free space optional position wireless energy transfer transmission antenna device |
Non-Patent Citations (2)
| Title |
|---|
| ZHEN GAO等: "Deep-subwavelength magnetic-coupling-dominant interaction among magnetic localized surface plasmons", 《PHYSICAL REVIEW B 93》 * |
| ZHEN GAO等: "Deep-subwavelength magnetic-coupling-dominant interaction among magnetic localized surface plasmons", 《PHYSICAL REVIEW B 93》, 31 May 2016 (2016-05-31), pages 2 - 4 * |
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