CN206932073U - A kind of wide area free space optional position wireless energy transfer transmission antenna device - Google Patents
A kind of wide area free space optional position wireless energy transfer transmission antenna device Download PDFInfo
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- CN206932073U CN206932073U CN201720523841.XU CN201720523841U CN206932073U CN 206932073 U CN206932073 U CN 206932073U CN 201720523841 U CN201720523841 U CN 201720523841U CN 206932073 U CN206932073 U CN 206932073U
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- wireless energy
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Abstract
The utility model discloses a kind of wide area free space optional position wireless energy transfer transmission antenna device；Wireless energy transmission device is identical by upper and lower multiple structures, 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 the magnetic resonance coupling in vertical direction occurs.With each subresonance, it is placed among metal helical structure magnetic resonance chamber in the receiving coil of optional position and has voltage generation.By producing more 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 conversion of the magnetic energy to electric energy, realize the wireless energy transfer of wide area free space optional position.
Description
Technical field
The utility model belongs to wireless energy transfer or wireless power transfer field, and in particular to a kind of wide area free space
Optional position wireless energy transfer transmission antenna device.
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 be wirelessly transferred realize.The key technology of wireless energy transfer is
Efficient transmitting and receiving antenna device, 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
It is quick to reduce, it significantly limit the radius of action of electronic product.
The content of the invention
The purpose of this utility model is overcome the deficiencies in the prior art, and the utility model is based primarily upon another wireless energy
Transmission mechanism is measured, i.e. open cavity principle launches day to provide a kind of wide area free space optional position wireless energy transfer
Line apparatus is to realize the liberalization of wireless energy transfer.
Wide area free space optional position wireless energy transfer transmission antenna device of the present utility model, including multiple structures
Metal helical structure that is identical and being support magnetic dipole pattern, the helical centre weight of two neighboring metal helical structure
Close.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.This reality
Produced strongly with new multiple metal helical structures meeting phase mutual resonance and by the space between adjacent metal helical structure
Energy exchange, 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
The conversion of individual resonance cavity space alternating magnetic field.Excitaton source is adjusted, makes the wireless energy transmission device with a certain resonance frequency；
Non-radiative magnetic field converts electrical current into magnetic field caused by it, and immanent energy is formed between multiple metal helical structures and is led to
Road；When the wire coil as wireless energy receiving terminal is placed on the free space optional position and has with alternating magnetic field certain
During angle, with each subresonance, more voltages are had in receiving coil and are produced, so as to realize any position of wide area free space
Put being wirelessly transferred for energy.
Preferably, 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 overlaps or the helical centre of whole metal helical structures overlaps, and helical centre overlaps
Two mutual set-up modes of metal helical structure for be symmetrical arranged or antisymmetry set.
Preferably, described metal helical structure includes a spiral center and one or some metal spiral arms；When
When spiral center connects more metal spiral arms, more described metal spiral arm rotation directions are identical with structure, and are uniformly connected to
On spiral center.
Preferably, described transmission antenna device is identical including two structures and is to support appointing for magnetic dipole pattern
The metal helical structure for shape of anticipating, the helical centre of two metal helical structures overlap.
Preferably, described metal helical structure is metal flat or spiral structure, described two metal spirals
The mutual set-up mode of structure for be symmetrical arranged or antisymmetry set.
More preferred, described two or more metal helical structures are setting up and down and helical centre overlaps.
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 among upper and lower two magnetic resonance chambers 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；Non-radiative magnetic field caused by its resonance converts electrical current into alternating magnetic field and is 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, the receiving coil as wireless energy receiving terminal can produce more voltages with each subresonance, so as to realize wide area certainly
By being wirelessly transferred for space optional position energy.
Preferably, one of resonant mode of the resonant frequency of described receiving coil and the metal helical structure resonator
The frequency of formula is identical.
Compared with prior art, the utility model provides a kind of wide area free space based on open cavity principle
Optional position wireless energy transfer transmission antenna device and its energy transmission method.Solve and require transmitting coil in the prior art
The problem of with receiving coil apart from very little, while also solve the moving freely of wireless energy transform device of prior art
Problem, this and traditional coil manifold type (first generation wireless energy transfer principle) and magnetic resonance (second generation wireless energy
Transmission principle) there is significant difference.
The frequency of magnetic coupling resonance of the present utility model is determined by the geometric parameter of metal helical structure, thus to be unlimited
Energy transmission receives transmission antenna device and provides more free design method.
Brief description of the drawings
Fig. 1 is the open type magnetic constructed in the utility model embodiment by vertical coupled metal helical structure
Resonator 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
Wide area free space optional position wireless energy transfer hair of the present utility model based on open cavity principle
The resonator system that antenna assembly needs two or more to interconnect is penetrated, is made up respectively of a kind of metal spiral magnetic resonance configurations, and
It is not traditional magnetic induction coil.Make the wireless energy transmission device by adjusting tranmitting frequency with a certain resonance frequency,
It is not to diffuse in Ordinary Electromagnetic Wave everywhere caused by it, but a kind of non-radiative is full of between upper two metal helical structures
The magnetic field in whole space, that is, convert electrical current into alternating magnetic field, between two or more metal spiral magnetic resonance configurations from
By forming a kind of immanent energy channel in space.When the wire coil as receiving terminal is placed on appointing for the free space
Meaning position simultaneously forms an angle with alternating magnetic field, with each subresonance, receives and more voltages generations are had in end-coil.Through
Cross and produce more subresonances, receiving terminal coil surface will gather enough energy, such receiving terminal non-radiative alternating magnetic field herein
Middle reception energy, so as to complete conversion of the magnetic energy to electric energy, realize the wireless biography of wide area free space optional position electric energy
It is defeated.
Embodiment 1
Upper and lower magnetic resonance chamber 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 upper and lower two metal helical structures are h=0.5m.
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 knot symmetrical above and below in the utility model
Structure is as an example, as shown in Figure 1.Fig. 1 be based on metal helical structure in symmetrical bit-type wide area free space optional position without
Heat input transmitting antenna assembly.Black arrow represents excitaton source and probe.Hanging down between upper and lower double layer of metal helical structure
Straight distance is h=0.5m.Whole vertical coupled metal helical structure is placed on down as wireless energy transmission device, excitaton source
Hold beside metal spiral arm.Field probe is placed in the space on the metal helical structure of upper end.Because upper and lower magnetic resonance chamber is
Same metal helical structure simultaneously supports 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 full of whole space
Alternating magnetic field.When as the coil of receiving terminal be placed in the space between upper and lower metal helical structure optional position and and
When alternating magnetic field is at a certain angle, with each subresonance, receives and more voltages generations are had in end-coil.By producing
More subresonances, receiving terminal coil surface will gather enough energy, and such receiving terminal receives in this non-radiative alternating magnetic field
Energy, so as to complete conversion of the magnetic energy to electric energy, realize being wirelessly transferred for wide area free space optional position electric energy.
Embodiment 2
Illustrate energy by exciting following metal helical structure and detecting the magnetic field near the metal helical structure of upper end
Be wirelessly transferred.The near field resonance spectrum of single metal helical structure is tested first, such as grey shown in solid, gold in figure two
Belong to helical structure in Ωm=6.91MHz resonant frequency supports a magnetic dipole mode of resonance.Then symmetrical structure is tested
Near field resonance spectrum, as black shown in solid in Fig. 2, because upper and lower metal helical structure intercouples, single metal spiral knot
The magnetic dipole mode of resonance division of structure turns into two patterns.The resonant frequency of two schizotypes is respectivelyWith
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 upper and lower two metal helical structures,
Material is thus formed symmetrical magnetic dipole mode of resonance, and there is strong energy in the space between two metal helical structures
Amount exchanges, so as to which electric energy is converted into immanent alternating magnetic field between two metal helical structures, as shown in 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, which receives wire coil, to 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, upper and lower two metals
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 as to which electric energy is in two metals
Immanent alternating magnetic field is converted between helical structure, as shown in 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 (7)
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 that described metal helical structure is metal flat 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 overlap.
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 more gold
When belonging to spiral arm, more 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
Transmission antenna device described in being is identical by two structures and is the metal helical structure group for supporting magnetic dipole pattern
Into.
6. wide area free space optional position wireless energy transfer transmission antenna device according to claim 4, its feature
It is that described metal helical structure is metal flat helical structure or spiral 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 overlaps, upper and lower two metal helical structures are in symmetrical
Set or antisymmetry is set.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720523841.XU CN206932073U (en) | 2017-05-11 | 2017-05-11 | A kind of wide area free space optional position wireless energy transfer transmission antenna device |
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| CN201720523841.XU CN206932073U (en) | 2017-05-11 | 2017-05-11 | A kind of wide area free space optional position wireless energy transfer transmission antenna device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998103A (en) * | 2017-05-11 | 2017-08-01 | 深圳凌波近场科技有限公司 | Wide area free space optional position wireless energy transfer transmission antenna device and its energy transmission method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998103A (en) * | 2017-05-11 | 2017-08-01 | 深圳凌波近场科技有限公司 | Wide area free space optional position wireless energy transfer transmission antenna device and its energy transmission method |
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