Summary of the invention
In view of this, the present invention provides a kind of electric energy launch antenna and apply its electric energy transmission device, so that electric energy
Receiving terminal can have bigger position freedom, all can be formed with electric energy transmitting terminal in multiple positions and preferably couple.
First aspect, the present invention provides a kind of electric energy for non-contact power to launch antenna, including:
At least one transmitting coil, launches the axially arranged of antenna around described electric energy, and each described transmitting coil includes
Substantially the coil turn arranged along coil surface or multiple ceoncentrically wound coil circle, the coil surface of all described transmitting coils collectively covers
Launch the side of antenna axial direction around described electric energy, wherein, described coil surface is plane or curved surface.
Preferably, described transmitting coil quantity is multiple, and the coil surface of each described transmitting coil is curved surface, and covers institute
State a part for side.
Preferably, the coil surface of described transmitting coil is the most overlapping with the coil surface of adjacent transmitting coil.
Preferably, the coil surface of each described transmitting coil covers the predetermined angular in the circumference of described electric energy transmitting antenna
In the range of described side.
Preferably, described transmitting coil quantity is N, and described predetermined angular range is 720/N, and N number of transmitting coil is along described
Electric energy is launched the circumference of antenna and is uniformly distributed.
Preferably, described transmitting coil quantity is one, and the coil surface of described transmitting coil covers described side substantially.
Preferably, the coil surface of described transmitting coil be included on described side relative to end, described end is leaned on each other
Closely.
Preferably, the coil surface of described transmitting coil is included in end overlapped in the circumference of described electric energy transmitting antenna
Portion.
Preferably, the coil surface of described transmitting coil includes the part covering described side and surrounds to described side
The end extended in region.
Preferably, at least one transmitting coil described around described electric energy launch antenna be axially formed for cylinder, cone,
Frustum, terrace with edge or irregularly shaped.
Preferably, each described transmitting coil includes:
Coil supporter, is used for limiting described coil surface;And
Wire, is formed on the coil surface that described coil supporter limits or is wound on described coil supporter.
Preferably, described coil supporter is flexible PCB or bobbin.
Second aspect, it is provided that a kind of electric energy transmission device for non-contact power, launches including electric energy as above
Antenna.
By setting, the axial face (referred to as coil surface) of transmitting coil is covered and launch antenna axial direction around described electric energy
Side, it is thus achieved that the electric energy sending antenna structure of stereogenic, the magnetic field of transmitting coil around described electric energy launch antenna
Axial side is uniformly distributed, thus electric energy receiving terminal can be positioned over electric energy and launch the optional position of antenna circumference, the most permissible
Obtain the preferable degree of coupling, and then improve the degree of freedom of receiving coil position.
Detailed description of the invention
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.Under
During the details of the present invention is described by literary composition, detailed describe some specific detail sections.Do not have for a person skilled in the art
The description of these detail sections can also understand the present invention completely.In order to avoid obscuring the essence of the present invention, known method, mistake
The narration the most in detail of journey, flow process, element and circuit.
Additionally, it should be understood by one skilled in the art that accompanying drawing is provided to descriptive purpose provided herein, and
Accompanying drawing is not necessarily drawn to scale.Unless the context clearly requires otherwise, the otherwise " bag in entire disclosure and claims
Include ", the similar word such as " comprising " implication that comprises rather than exclusive or exhaustive implication should be construed to;It is to say, be " bag
Include but be not limited to " implication.In describing the invention, it is to be understood that in describing the invention, unless otherwise saying
Bright, " multiple " are meant that two or more.
It addition, such as the relational terms on " bottom " or " bottom " and " top " or " top " etc here may be used for
The relation such as scheming an element and other elements limited is described.It should be understood that relational terms is intended to comprise except in figure
Shown in towards outside difference towards.Such as, if the device in a width figure is overturn, then be described as at another element
The element of " bottom " side will be oriented " top " side at another element.Therefore, depend on accompanying drawing specifically towards, allusion quotation
Type term " bottom " comprise " bottom " and " top " two kinds towards.Similarly, if the device in a width figure is overturn, then retouch
State for other elements " below " or the element of " below " will be oriented other element " above ".Therefore, exemplary term " under
Face " or " below " can comprise above and below two kinds towards.
Fig. 2 A-2B shows that the electric energy of the comparative example as the embodiment of the present invention launches the schematic diagram of antenna.In this contrast
In example, electric energy is launched antenna and is included transmitting coil TX1 and transmitting coil TX2.Wherein, transmitting coil TX1 and TX2 is substantially disposed in
In plane, there is substantially planar coil surface.Meanwhile, transmitting coil TX1 and TX2 is so that coil surface is in predetermined angular
Mode arrange, the axle that both coil surfaces limit, at two coil surfaces, the cylindricality obtained intersects.Preferably, as shown in Figure 2 B,
The coil surface of transmitting coil TX1 and TX2 is mutually perpendicular to.In this manual, cylindrical coordinate is utilized to launch antenna for electric energy
It is described.Cylindrical coordinate is generally by x-axis coordinate, z-axis coordinate and circumferential deflection angleCarry out the point in located space.Following
Explanation in, z-axis is defined as electric energy launch antenna axial, will be around the direction of axle z, namely circumferential deflection angleDirection
It is defined as circumference.Wherein, the size of transmitting coil, shape can need to set according to design, however it is not limited to specific shape and
Size.Meanwhile, transmitting coil TX1 with TX2 is also not necessary to identical.Those skilled in the art it is recognised that when coil electricity,
Magnetic field intensity on the direction vertical with coil turn place plane is maximum, and the direction parallel with coil turn, magnetic field intensity is minimum.
In order to obtain preferable electric energy emission effciency in non-contact power, two transmitting coils are provided towards different directions,
Such that it is able to cover obtaining preferable magnetic field on axial different directions.When carrying out non-contact power, can pass through
Control device (not shown), respectively detection transmitting coil TX1 and TX2 launching effect or with the coupling of electric energy receiving terminal
Degree, thus select one of them to carry out electric energy transmitting, it is thus achieved that preferably electric energy launching effect.
Meanwhile, in above-mentioned comparative example the quantity of transmitting coil can also more than two, thus, the coil surface of each transmitting coil
Each other in predetermined angle.Preferably, the angle between the coil surface of each transmitting coil can be equal.Thus, receive at electric energy
A transmitting coil is all there is formed when the receiving coil of antenna is positioned at the different azimuth of the cylindrical sides shown in figure
Preferably electromagnetic coupled, thus improve electric energy emission effciency.
But, such scheme needs coil arranged in a crossed manner, relatively costly in manufacturing process.
Fig. 3 A-3B is the schematic diagram of the electric energy transmitting antenna of the embodiment of the present invention one.As shown in figs 3 a and 3b, electric energy is launched
Antenna 1 is formed cylinder.Electric energy is launched antenna 1 and is included multiple transmitting coil TX1~TXN.In figure 3, N is equal to 4.Described
Multiple transmitting coil TX1~TX4 are arranged around axis z, cover cylindrical side.Axis z forms electric energy and launches the axle of antenna
To.As shown in Figure 3 C, each transmitting coil TX1 includes coil supporter 11 and wire 12.Coil supporter 11 has less thickness,
And limiting the curved surface being formed with covering electric energy transmitting antenna 1 side, this curved surface is referred to as coil surface 13.Wire 12 is formed at coil
On face 13, described coil surface extends, or be wound in the side of the thickness direction of described coil supporter 11, thus formed basic
The coplanar multiple ceoncentrically wound coil circles being arranged at coil surface.Described wire 12 forms the electric current along coil turn flowing when energising, from
And the magnetic field producing correspondence is formed with electric energy reception antenna and couples, transmit electric energy.Preferably, coil supporter 11 could be arranged to soft
Property circuit board, wire 12 is formed on the principal plane of flexible PCB, by bending and fixing flexible circuit board obtain there is song
The transmitting coil in planar coil face.Alternately, coil supporter 11 is it can also be provided that have the bobbin in curved surface coil face, wire
The side coiling of 12 extensions coil.
As shown in Figure 3 A and Figure 3 B, the coil surface 13 of each transmitting coil is formed as curved, and covers and send out around electric energy
Penetrate the side of the axle z of antenna.Whole electric energy launches dwi hastasana becomes cylindrical, and described side is cylindrical side.All
Ray circle TX1~TX4 is covered each by the different piece of described side, and collectively covers whole side.Owing to magnetic field is in coil turn
Region in be essentially uniformly distributed, by arranging multiple transmitting coil so that launch antenna 1 one weeks around electric energy the most permissible
Carry out the transmitting of electromagnetic energy.
Preferably, the coil surface of each transmitting coil TX1~TX4 at least partly weighs with the coil surface of adjacent transmitting coil
Folded.Such as, in Fig. 3 A and Fig. 3 B, transmitting coil TX1 is overlapping with transmitting coil TX3 and TX4, and the region of overlap not phase
With.Transmitting coil TX1 is the most overlapping with transmitting coil TX2, and gap s between the two is launched coil TX4 and is covered.Similarly,
Two gaps between transmitting coil TX3 and TX4 are launched coil TX1 and TX2 respectively and cover.Thus, it is possible to make the most collinear
Gap between circle is covered by other transmitting coil, so that the distribution in magnetic field is more uniform, eliminates coverage hole.
Further, the coil surface of each transmitting coil covers the predetermined angular model in the circumference of described electric energy transmitting antenna
Enclose interior side.Preferably, the angle that each transmitting coil covers is identical, and for 720/N, wherein, N is the quantity of transmitting coil.
It is to say, in this preferred implementation, electric energy is launched antenna around axial side by the coil surface of all transmitting coils
At least cover two-layer, to obtain more preferable Distribution of Magnetic Field.As shown in Figure 3 A and Figure 3 B, wherein, each transmitting coil TX1~TX4
Cover the side of 180 degree in the circumferential, that is, the coil surface of each transmitting coil is rendered as being bent to the cylinder of 180 degree.With
Time, the circumference that each transmitting coil launches antenna along electric energy is uniformly distributed, that is, as shown in Figure 3 B, original position is respectively 0
Degree, 90 degree, 180 degree and 270 degree.Thus, it is possible to obtain more uniform Distribution of Magnetic Field.
Further, the wire extraction location of each transmitting coil could be arranged to the optional position on coil surface, such as
Ad-hoc location bottom coil surface.
Meanwhile, make electric energy transmitting terminal with polling mode detection at present which or which transmitting coil energy by setting
Enough couple with electric energy reception antenna with the preferable degree of coupling, thus electric energy receiving terminal can be positioned over electric energy and launch antenna circumference
Optional position, all can obtain the preferable degree of coupling, thus improve the degree of freedom of receiving coil position.
Fig. 3 D and Fig. 3 E shows that the electric energy of the present embodiment launches the coupling of antenna and the electric energy reception antenna of electric energy receiving terminal
Conjunction mode.As shown in Figure 3 D, launch antenna 1 due to electric energy and be formed as column.The electric energy reception antenna 2 of electric energy receiving terminal can be by
Be formed as ring-type, or a ring-type part.Launch antenna 1 due to electric energy and can carry out electric energy transmitting in whole side equably,
Therefore, no matter how electric energy reception antenna 2 rotates around described electric energy transmitting antenna 1 all can obtain preferable electric energy reception effect
Really.Meanwhile, as shown in FIGURE 3 E, the electric energy reception antenna of electric energy receiving terminal can not also be arranged in the way of sheathed, but with electricity
A part for the side that can launch antenna is staggered relatively, now, also due to electric energy transmitting antenna 1 can be uniform in whole side
Ground carries out electric energy transmitting, and therefore, no matter how electric energy reception antenna 2 rotates around described electric energy transmitting antenna 1 all can obtain
Preferably electric energy reception.
It will be understood by those skilled in the art that the electric energy described in Fig. 3 A-3E is launched antenna and is only the one of the embodiment of the present invention
Individual example.The present invention is not restricted for the quantity of transmitting coil and the angle of covering.Such as, as shown in Figure 4, according to this
The electric energy transmitting antenna of embodiment is it can also be provided that include 3 transmitting coils, and the coil surface of each transmitting coil is in the circumferential
Substantially cover the side of the angular range of 240 degree.Certainly, the angle that each transmitting coil is covered can identical can also basis
Needs are set to difference.When existing overlapping between transmitting coil, the size in overlapping region could be arranged to identical, it is also possible to
It is arranged as required to as difference.
Further, those skilled in the art are further appreciated that the electric energy of the present embodiment launches the shape of antenna, that is,
The shape surrounded by the coil surface of all transmitting coils, can be for the cylinder shown in Fig. 3 A-3E, it is also possible to any for other
Have axially and around the shape of axial side, such as, prism, cuboid, taper, frustum, terrace with edge or have irregular
The cylinder of axial slices shape or frustum etc..
Simultaneously, although the coil surface of the embodiment transmitting coil in Fig. 3 A-3E is curved surface, but, launch sky at electric energy
Linear when becoming prism or terrace with edge, the coil surface of transmitting coil can also be plane.
Thus, the embodiment of the present invention makes the axial face (referred to as coil surface) of transmitting coil cover around described by setting
Electric energy launch antenna axial direction side, it is thus achieved that the electric energy sending antenna structure of stereogenic, the magnetic field of transmitting coil around
Described electric energy is launched the side of antenna axial direction and is uniformly distributed, thus electric energy receiving terminal can be positioned over electric energy and launch antenna circumference
Optional position, all can obtain the preferable degree of coupling, thus improve the degree of freedom of receiving coil position.
On the other hand, in other embodiments of the invention, electric energy transmitting antenna only arranges a transmitting coil, its coil
Face substantially covers electric energy and launches the whole side of antenna.Thus, this transmitting coil i.e. can be implemented in electric energy transmitting antenna
Whole side launch electric energy equably, no matter the electric energy reception antenna of electric energy receiving terminal is placed on which position of described side
Put, all can carry out electric energy reception efficiently.
Fig. 5 is the schematic perspective view of a preferred implementation of the electric energy transmitting antenna of the embodiment of the present invention two.In order to
Conveniently check, Fig. 5 illustrate only the coil surface of transmitting coil.As it is shown in figure 5, the thickest lines show on coil surface
The trend of winding wire.The coil surface of the transmitting coil of present embodiment is arranged to just around axial one week, covers cylinder
The whole side of body.The wire 12 of transmitting coil substantially extends along the edge direction of coil surface, that is, along upper end-face edge, end
Sideline, portion, lower edge, the mode in sideline, end extends.End 13a and 13b of coil surface contacts with each other.Easy to understand, as
Really the end of coil surface is provided with wire, then need setting to make mutually insulated between wire, and this can be by such as giving wire
Arrange insulating coating to realize.
Fig. 6 is the schematic perspective view of another preferred implementation of the electric energy transmitting antenna of the embodiment of the present invention two.As
Shown in Fig. 6, the thickest lines show the trend of winding wire on coil surface.The coil of the transmitting coil of present embodiment
Face is disposed around axial one week, the cylindrical whole side of basic covering.The wire 12 of transmitting coil is substantially along coil
The edge direction in face extends, that is, along upper end-face edge, sideline, end, lower edge, the mode in sideline, end extends.With Fig. 5
Difference, end 13a and 13b of the coil surface in Fig. 6 is oppositely arranged, and leaves gap between the two ends.Such setting
Mode can reduce electric energy and launch the technological requirement in antenna fabrication process, reduces production cost.
Fig. 7 is the schematic perspective view of another preferred implementation of the electric energy transmitting antenna of inventive embodiments two.Online
When there is gap between the end in circle face, in fact it could happen that electromagnetic exposure, produce less desirable Distribution of Magnetic Field.Thus, it is possible to arrange
The coil surface making transmitting coil covers electric energy in the circumferential and launches the side of the antenna scope more than 360 degree.Such as so that send out
End 13a and 13b of the coil surface of ray circle is overlapped.Thus, it is possible to remove the less desirable magnetic field caused due to gap
Distribution, it is thus achieved that preferably electromagnetic coupled effect.
Although electric energy transmitting antenna can to a certain degree optimize Distribution of Magnetic Field as shown in Figure 7.But, owing to two strands can not
Can completely closely coiling, on the impact of field homogeneity distribution or exist.In order to optimize Distribution of Magnetic Field further, the present invention is real
Execute example three propose by setting make transmitting coil coil surface end 13a and 13b to electric energy launch antenna side surround
Intra-zone extend.Make the electric current flowed vertically launch the side of antenna away from electric energy, thus weaken further externally
Enclose the harmful effect in magnetic field.
Fig. 8 is the schematic perspective view of a preferred implementation of the electric energy transmitting antenna of the embodiment of the present invention three.Such as Fig. 8
Shown in, the thickest lines show the trend of winding wire on coil surface.In Fig. 8, described electric energy launches dwi hastasana to be become
Cylinder.The coil surface of transmitting coil includes covering part 13c of cylindrical sides and in the region that described side surrounds
End 13a and 13b extended.End 13a and 13b can extend internally substantially parallel to each other, it is also possible to uneven side
Formula extends internally.The lines that extend internally on the wire 12 of transmitting coil top edge the most laterally, lower limb, end face and
The line being parallel to side extends.
Fig. 9 is the schematic perspective view of another preferred implementation of the electric energy transmitting antenna of the embodiment of the present invention three.As
Shown in Fig. 9, the thickest lines show the trend of winding wire on coil surface.In Fig. 9, described electric energy is launched antenna and is formed
For cuboid.The coil surface of transmitting coil includes part 13c covering cuboid side and the region surrounded to described side
End 13a and 13b of interior extension.End 13a and 13b can extend internally substantially parallel to each other, it is also possible to uneven
Mode extends internally.As it is shown in figure 9, the mode that end 13a and 13b can also bend, that is, end corresponding part is formed as bent
The mode in face, extends internally.Extend internally on the wire 12 of transmitting coil top edge the most laterally, lower limb, end face
Lines and be parallel to side line extend.
Figure 10 is the schematic perspective view of another preferred implementation of the electric energy transmitting antenna of the embodiment of the present invention three.As
Shown in Figure 10, the thickest lines show the trend of winding wire on coil surface.In Figure 10, described electric energy launches dwi hastasana
Become frustum.The coil surface of transmitting coil includes covering part 13c of frustum side and in the region that described side surrounds
End 13a and 13b extended.End 13a and 13b can extend internally substantially parallel to each other, it is also possible to uneven side
Formula extends internally.The lines that extend internally on the wire 12 of transmitting coil top edge the most laterally, lower limb, end face and
The line being parallel to side extends.
Should be understood that the some embodiments exemplarily only illustrating that electric energy launches antenna described above, the present embodiment
Electric energy is launched antenna and be may be formed as terrace with edge or the cylinder with irregular axial cross section as shown in figure 11 or frustum etc..
The present embodiment is by arranging a transmitting coil, and axial face (referred to as coil surface) covering of transmitting coil is enclosed
The whole side of antenna axial direction is launched, it is thus achieved that the electric energy sending antenna structure of stereogenic around described electric energy, transmitting coil
Magnetic field is uniformly distributed in the side launching antenna axial direction around described electric energy, thus electric energy receiving terminal can be positioned over electric energy and launch
The optional position of antenna circumference, all can obtain the preferable degree of coupling, and then improve the degree of freedom of receiving coil position.With
Time, extending by arranging the end of transmitting coil intra-zone that is overlapping or that surround to side, the coil that can reduce end is led
Cancel out each other the harmful effect for external magnetic field caused, further in the line magnetic field that current in opposite produces when energising
Improve the uniformity of Distribution of Magnetic Field.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various change and change.All made within spirit and principles of the present invention any amendment, equivalent
Replacement, improvement etc., should be included within the scope of the present invention.