CN105939064A - Complementary wireless power supply transmitter - Google Patents
Complementary wireless power supply transmitter Download PDFInfo
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- CN105939064A CN105939064A CN201610382109.5A CN201610382109A CN105939064A CN 105939064 A CN105939064 A CN 105939064A CN 201610382109 A CN201610382109 A CN 201610382109A CN 105939064 A CN105939064 A CN 105939064A
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Abstract
The embodiment of the invention provides a complementary wireless power supply transmitter. N same-frequency signals with the phase difference of 360 degrees/N are generated by the same signal source in the complementary wireless power supply transmitter. N resonant transmitters are driven by the N signals respectively, and an included angle of a plane where resonant transmitting coils in the N resonant transmitters is a preset angle; due to the fact that the phase difference of the N signals is 360 degrees/N, namely the N signals are complementary in the aspects of phase, magnetic fields generated by the N resonant transmitting coils do not interfere with each other, and magnetic fields in the common areas of the N resonant transmitting coils are also complementary, namely the strength of the magnetic fields is geometric integration of the magnetic fields generated by the N resonant transmitting coils, and the directions of the magnetic fields comprise N normal directions vertical to the resonant transmitting coils, namely a three-dimensional magnetic field is formed, and energy can be received by a receiving coil in N directions. Compared with the prior art, the electricity taking effect of the receiving coil is improved.
Description
Technical field
The present embodiments relate to circuit engineering field, more particularly relate to a kind of complementary type wireless power transmitter.
Background technology
Wireless power is the energy that the electric energy of power supply is converted into radio transmission by the galvanomagnetic-effect of coil, at receiving terminal
Again by this energy conversion telegram in reply energy, thus electrical equipment is carried out wireless power.
Traditional wireless power includes magnetic resonance wireless power.Magnetic resonance wireless power is that the galvanomagnetic-effect by coil exists
The normal direction being perpendicular to coil forms a magnetic field, and receiving coil only keeps parallel with resonance ejection coil plane, ability
Obtaining energy, once coil is not parallel, and power taking effect is remarkably decreased, and even takes less than electricity.
Summary of the invention
In view of this, the invention provides a kind of complementary type wireless power transmitter, to overcome reception line in prior art
Circle power taking weak effect, even takes the problem less than electricity.
For achieving the above object, the present invention provides following technical scheme:
A kind of complementary type wireless power transmitter, including:
Signal source, described signal source has N number of signal output part, and described signal source generates N road signal, each road signal pair
Answering a signal output part, the frequency of described N road signal is identical, and the phase contrast of described N road signal is 360 °/N, and N is more than or equal to 2
Positive integer less than or equal to 360；
N number of resonance ejection device, the input of each resonance ejection device is connected, often with a signal output part of described signal source
Resonance ejection device described in one includes that resonance circuit, described resonance circuit include resonance ejection coil and resonant capacitance；N number of described humorous
The angle of transmitting coil place plane of shaking is predetermined angle.
Preferably, described resonance circuit also includes: switching tube, wherein:
Described resonance ejection coil one end is connected with one end of described resonant capacitance, the other end of described resonance ejection coil
It is connected with positive source, the other end ground connection of described resonant capacitance, the letter controlling end and described signal source of described switching tube
Number outfan is connected；First end of described switching tube is connected with one end of described resonant capacitance, the second end of described switching tube with
The other end of described resonant capacitance is connected.
Wherein, described signal source includes N number of driving amplifier, and each road signal that described signal source produces is via described in one
Driving amplifier exports, and the outfan of N number of described driving amplifier is N number of signal output part of described signal source.
Wherein, each described resonance ejection device includes a driving amplifier, and the input of described driving amplifier is with described
One signal output part of signal source is connected, and the outfan of described driving amplifier is connected with the control end of described switching tube.
Wherein, described switching tube is MOSFET or IGBT.
Wherein, described resonant capacitance be equivalent tank electric capacity, described resonance ejection coil be equivalent tank transmitting coil and/
Or described switching tube is equivalent switch pipe.
Wherein, the N road signal of described signal source output is pwm signal.
Wherein, the frequency of the N road signal that described signal source exports and described resonance ejection coil and the resonance of resonant capacitance
Frequency is identical.
Wherein, the dutycycle of described N road signal is less than 50%.
Understand via above-mentioned technical scheme, compared with prior art, embodiments provide a kind of complementary type without
Line powered transmitter, it is identical that same signal source creates N number of frequency, but the signal that phase contrast is 360 °/N.This N number of signal divides
The angle not driving the resonance ejection coil place plane in N number of resonance ejection device, and N number of resonance ejection device is predetermined angle,
Owing to the phase contrast of N road signal is 360 °/N, i.e. complementary in phase place, the magnetic field that the most N number of resonance ejection coil produces is the most not
Interference, and also to have the intensity of complementary function, i.e. magnetic field be that N number of resonance is sent out in the magnetic field of this N number of resonance ejection coil public territory
The geometric superposition in magnetic field that ray circle produces, and the direction in magnetic field includes N number of normal direction being perpendicular to resonance ejection coil, i.e.
Defining a stereo Magnetic-field, receiving coil can receive energy on N number of direction, compared with prior art, improves reception
The power taking effect of coil.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will to embodiment or
In description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only
Embodiments of the invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to root
Other accompanying drawing is obtained according to the accompanying drawing provided.
Fig. 1 is the circuit diagram of complementary type wireless power transmitter；
Fig. 2 (a) is the waveform diagram of two paths of signals；
Fig. 2 (b) is the waveform diagram of three road signals；
Fig. 3 is the relative position view that resonance ejection coil L1 and resonance transmitting coil L2 is distributed；
Fig. 4 is resonance ejection coil L1, the relative position of resonance ejection coil L2 and resonance ejection coil L3 distribution shows
It is intended to；
Fig. 5 is single switch flyback circuit；
Fig. 6 is half-bridge circuit；
Fig. 7 is full-bridge circuit；
Fig. 8 is the circuit diagram of a kind of implementation of resonance circuit in complementary type wireless power transmitter；
Fig. 9 is the circuit diagram of complementary type wireless power transmitter.
Detailed description of the invention
For the sake of quoting and understanding, the explanation of the technical term being used below, write a Chinese character in simplified form or abridge and be summarized as follows:
IGBT:Insulated Gate Bipolar Transistor, insulated gate bipolar transistor；
NMOSFET:n-channel Metal-Oxide-Semiconductor Field-Effect Transistor, N
Raceway groove metal-oxide half field effect transistor；
PMOSFET:p-channel Metal-Oxide-Semiconductor Field-Effect Transistor, P
Raceway groove metal-oxide half field effect transistor
EMC:Electro Magnetic Compatibility, Electro Magnetic Compatibility；
PWM:Pulse Width Modulation, pulse width modulation.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Wireless power divides from application space, point-to-point wireless power, a line can be divided into power multipoint wireless, one
Power in the face of multipoint wireless and in space, multipoint wireless is powered, wherein power with multipoint wireless in space, require technically
Height, magnetic resonance wireless power is to form a magnetic field by the galvanomagnetic-effect of coil in the normal direction being perpendicular to coil, receives
Coil only keeps parallel with resonance ejection coil plane, could obtain energy, and once coil is not parallel, under power taking effect is notable
Fall, even takes less than electricity.
In order to allow receiving coil obtain electric energy in different spaces, different orientation, it is necessary to form a stereo Magnetic-field,
And resonance ejection coil can be only formed the magnetic field in a direction, a stereo Magnetic-field will be formed it is necessary to have two, three very
To more radiating circuit, problem is: when multiple resonance ejection devices work simultaneously, if operating frequency is identical, each other
Produce severe jamming, even damage resonance ejection device；If operating frequency is different, although be likely to form stereo Magnetic-field, but connect
Take-up circle can only receive the energy of a frequency, and this stereo Magnetic-field is not the most worth.
Therefore, a frequency is identical, and does not interfere with each other, the multiple resonance emitter of energy collaborative work, is to solve in space
The key of wireless power, is also the difficult point in the embodiment of the present invention.
Embodiments provide a kind of complementary type wireless power transmitter, as it is shown in figure 1, be complementary type wireless power
The circuit diagram of transmitter, this complementary type wireless power transmitter includes: signal source SG and N number of resonance ejection device P1～Pn, its
In:
Signal source SG has N number of signal output part, each signal output part one signal of output, N number of signal be respectively S1,
S2 ..., Sn, the frequency of N number of signal of N number of signal output part is identical, but phase contrast is 360 °/N, the phase of the most N number of signal
Position is complementary.N is the positive integer more than or equal to 2 less than or equal to 360.
Such as, as N=2, phase contrast is 180 °, if the phase place of a road signal is 0 °, the phase place of another road signal is
180°；If the phase place of a road signal is 90 °, the phase place of another road signal is 270 °；As N=3, phase contrast is 120 °, as
Really the phase place of a road signal is 0 °, and the phase place of other two paths of signals is respectively 120 ° and 240 °；As N=4, phase contrast is 90 °,
The phase place of 4 road signals can be respectively 0 °, 90 °, 180 °, 270 °, the like.
Fig. 2 (a) is as N=2, the waveform diagram of two paths of signals.When Fig. 2 (b) is N=3, the waveform of three road signals shows
It is intended to.The phase contrast that can be seen that signal S1 and signal S2 from Fig. 2 (a) is 180 °；From Fig. 2 (b) it can be seen that signal S1,
The phase contrast of signal S2 and signal S3 is 120 °.Signal shown in Fig. 2 (a) and Fig. 2 (b) is pwm signal, the embodiment of the present invention
In signal can also be other signals, such as square wave, concrete according to depending on practical situation, this is not limited by the embodiment of the present invention
Fixed.
The dutycycle of square wave or pwm signal can be less than 50%, but this is not specifically limited by the embodiment of the present invention.
The form of signal source SG has two kinds, and one is hardware signal source, and one is software signal source.
The N road signal output part of N number of resonance ejection device and signal source one_to_one corresponding respectively, the most each resonance ejection device defeated
Enter end to be connected with a signal output part of signal source SG.Each resonance ejection device includes resonance circuit.Resonance circuit includes resonance
Transmitting coil and resonant capacitance；The angle of N number of described resonance ejection coil place plane is predetermined angle.
Depending on predetermined angle can be according to the position of electrical equipment in practical situation.Number N of resonance ejection device is also according to reality
In border depending on the space at electrical equipment place.Such as different application spaces, can determine according to the quantity of environment or metope
The occurrence of number N of resonance ejection device, such as:
In a room, the wireless power simultaneously of the electrical equipment on ground to be given electrical equipment and ceiling, can select N=2, use one
The complementary type wireless power transmitter of individual two phase (will export the complementation of two-way complementary phases signal in the embodiment of the present invention simultaneously
Type wireless power transmitter is referred to as the complementary type wireless power transmitter of two phase, is called for short two-phase transmitter；Export three tunnels simultaneously
The complementary type wireless power transmitter of complementary phases is referred to as the complementary type wireless power transmitter of three phase places, is called for short three-phase and launches
Machine；The complementary type wireless power transmitter simultaneously exporting four tunnel complementary phases is referred to as the complementary type wireless power transmitting of four phase places
Machine, is called for short four phase transmitters；... the like), two resonance circuits are distributed in ground and ceiling.Now two resonance
The predetermined angle of transmitting coil is 0 °.
As it is shown on figure 3, resonance ejection coil L1 and resonance transmitting coil L2, when spatial distribution, it is in parastate, by
Have the characteristic of complementation between the signal driving the two resonance ejection coil, i.e. phase contrast is 180 °, and therefore, the two is humorous
Shake between transmitting coil formed magnetic field also there is resonance ejection coil L1 and resonance transmitting coil L2 in complementary function, i.e. room
Between magnetic field be the summation in magnetic field that the two resonance ejection coil produces.
On a room, ground to be given electrical equipment, wall, the wireless power simultaneously of the electrical equipment on electrical equipment and ceiling, can select N
=3, use the complementary type wireless power transmitter of three phase places, three resonance circuits are distributed in ground, metope and variola
Plate.Now the predetermined angle of three resonance ejection coils can be 90 °.
As shown in Figure 4, in spatial distribution, resonance ejection coil L1, resonance ejection coil L2 and resonance ejection coil
L3, though non-cross, the plane of these three resonance ejection coil is certain angle, owing to driving these three resonance ejection
Have the characteristic of complementation between the signal of coil, i.e. phase contrast is 120 °, and therefore, this is the folder between three resonance ejection coils
It is the magnetic field that three resonance ejection coils produce that the magnetic field formed in angular zone also has the function of complementation, the i.e. intensity in magnetic field
Geometric superposition.
Certainly these three resonance ejection coil can also intersect, and resonance ejection coil plane is certain angle, by
There is between the signal driving these three resonance ejection coil the characteristic of complementation, therefore, eight districts that these three coil intersects
The most just there is the function of complementation in the magnetic field that territory is formed, i.e. magnetic field intensity is the magnetic that three resonance ejection coils produce in respective regions
The geometric superposition of field.
On a room, ground to be given electrical equipment, four sides wall, the wireless power simultaneously of the electrical equipment on electrical equipment and ceiling, permissible
Select N=6, use the complementary type wireless power transmitter of six phase places, six resonance circuits are distributed in ground, four metopes
And ceiling.Now six resonance ejection coils, are distributed in ground and are distributed in the resonance ejection coil place plane of ceiling
Angle be 0 °, the angle of the resonance ejection coil place plane being distributed in opposite face in four metopes is 0 °, is distributed in adjacent
The angle of the resonance ejection coil place plane in face is 90 °.It is distributed in the resonance ejection coil on ground and is distributed in four sides wall
The angle of resonance ejection coil place plane is 90 °.I.e. involved in embodiment of the present invention predetermined angle can include multiple
Different angles, predetermined angle includes 0 ° and 90 ° in the example shown, and in actual application, predetermined angle can also be other values, such as
180 °, 60 ° etc..
In the above example, due to the phase complements of each road signal, so resonance ejection its energy produced in N road is the most mutual
Mend.
The complementary type wireless power transmitter that the embodiment of the present invention provides, including N number of resonance ejection device, the electromagnetic energy of transmitting
Amount phase place is different, but frequency is consistent, can form a stable non-interference stereo Magnetic-field, at this in the same space
In space, receiving coil can obtain electric energy in N number of orientation, it is achieved wireless, free, safe power supply.
Resonance circuit may include that single switch flyback circuit, half-bridge circuit or full-bridge circuit.
Fig. 5 is single switch flyback circuit, and in single switch flyback circuit, the resonant capacitance C and resonance transmitting coil L of resonant ring are also
Connection, one end of resonant ring is connected with positive source V+, and the other end of resonant ring is connected with the first end of switch transistor T 1, switch transistor T 1
The second end ground connection, switch transistor T 1 control end be connected with signal second end of signal source SG.Fig. 6 is half-bridge circuit, half
In bridge circuit, resonant capacitance C in resonant ring and resonance transmitting coil L can be series connection can also be in parallel, half-bridge circuit has
Two brachium pontis, left brachium pontis is in series up and down by two switch transistor T 1 and T2, and right brachium pontis is by two resonant capacitance C3 and C4
Being in series up and down, an end of resonant ring is connected on the midpoint of left brachium pontis, and the other end of resonant ring is connected on the midpoint of right brachium pontis
On；The circuit of left brachium pontis and right brachium pontis can exchange.In half-bridge circuit, the control end of switch transistor T 1 is defeated with the one of signal source SG
Going out end to be connected, the end that controls of switch transistor T 2 is connected with another outfan of signal source SG.
Fig. 7 is full-bridge circuit, in full-bridge circuit, resonant ring allow resonant capacitance C and resonance transmitting coil L series connection or also
The form of connection occurs, full-bridge circuit has two brachium pontis, and left brachium pontis is in series up and down by two switch transistor T 1 and T2, right bridge
Arm is also in series up and down by two switch transistor T 3 and T4, and an end of resonant ring is connected on the midpoint of left brachium pontis, resonant ring
The other end be connected on the midpoint of right brachium pontis.In full-bridge circuit, switch transistor T 1, switch transistor T 2, switch transistor T 3 and switching tube
T4 be connected with four outfans of signal source SG one_to_one corresponding be connected.
Embodiment of the present invention breaker in middle pipe can be NMOSFET, and now the first end can be drain electrode, and corresponding second end is
Source electrode, control end is grid；Switching tube can be PMOSFET, and now the first end is source electrode, and the second end is drain electrode, controls end and is
Grid；Switching tube can be IGBT, and now the first end is colelctor electrode, and corresponding second end is emitter stage, and control end is grid.
Dotted arrow in Fig. 5, Fig. 6 and Fig. 7 represents the transmission direction of the energy that resonance ejection coil produces.
Resonant ring: working in the connection of resonance ejection coil under resonant condition and resonant capacitance has two kinds of connected modes:
Series connection and parallel connection, under resonant condition, this combination by a resonance ejection coil and a resonant capacitance is referred to as resonant ring,
At least two resonant rings in wireless power supply system, one is to launch resonant ring, and it is humorous by a resonance ejection coil and one
Capacitances in series of shaking or compose in parallel, another is to receive resonant ring, it by a receiving coil and a resonant capacitance series connection or
It is formed in parallel.
The frequency of N road signal is identical with the free-running frequency of resonance circuit.
The complementary type wireless power transmitter that the embodiment of the present invention provides, it is identical that same signal source creates N number of frequency,
But the signal that phase contrast is 360 °/N.This N number of signal drives the resonance in N number of resonance ejection device, and N number of resonance ejection device respectively
The angle of transmitting coil place plane is predetermined angle, owing to the phase contrast of N road signal is 360 °/N, i.e. complementary in phase place,
The magnetic field that the most N number of resonance ejection coil produces does not interfere with each other, and the magnetic field of this N number of resonance ejection coil public territory also has
The intensity of complementary function, i.e. magnetic field is the geometric superposition in the magnetic field that N number of resonance ejection coil produces, and the direction in magnetic field includes N
The individual normal direction being perpendicular to resonance ejection coil, i.e. defines a stereo Magnetic-field, and receiving coil can receive on N number of direction
To energy, compared with prior art, improve the power taking effect of receiving coil.
Although single switch flyback circuit is simple, with low cost, it is easy to control, but its shortcoming is more prominent, in the freedom of resonant ring
Under the active resonance of resonance and resonance circuit interacts, because frequency multiplication and superposition produce complicated secondary vibration, to the electricity of environment
Guipure carrys out serious pollution, and EMC ratio is more serious.Half-bridge circuit typically requires 2 to 3 road insulating power supplies, moderate cost, easily controls
System, but current waveform easily is affected to produce by leakage current and is distorted, and affects EMC characteristic, and output is less than full-bridge circuit
Output.The circuit of full-bridge circuit is complicated, drives and needs 4 to 5 road insulating power supplies, and cost is high, wayward, but current waveform
Complete with voltage waveform, EMC characteristic is good, and output is big.The one that the embodiment of the present invention provides is as single switch flyback circuit
Circuit is simple, and EMC characteristic is good as full-bridge circuit, and the resonance circuit that output is big.
As shown in Figure 8, for the circuit diagram of a kind of implementation of resonance circuit in complementary type wireless power transmitter, each
Resonance circuit includes resonance ejection coil L, resonant capacitance C and switch transistor T, and it is humorous that this resonance circuit is properly termed as single control series connection
Shake circuit, wherein:
Described resonance ejection coil L one end is connected with one end of described resonant capacitance C, and described resonance ejection coil L's is another
One end is connected with positive source V+, the other end ground connection of described resonant capacitance C, the control end of described switch transistor T and described signal
One signal output part of source SG is connected；First end of described switch transistor T is connected with one end of described resonant capacitance C, described switch
Second end of pipe T is connected with the other end of described resonant capacitance C.
Fig. 8 breaker in middle pipe T is MOSFET, naturally it is also possible to for IGBT.Embodiment of the present invention breaker in middle pipe can be
NMOSFET, now the first end can be drain electrode, and corresponding second end is source electrode, and control end is grid；Switching tube can be
PMOSFET, now the first end is source electrode, and the second end is drain electrode, and control end is grid；Switching tube can be IGBT, now first
End is colelctor electrode, and corresponding second end is emitter stage, and control end is grid.
Above-mentioned resonance circuit, is a simple circuit being made up of three elements, and circuit is very simple, with low cost.
Resonant capacitance acts on of both having, and resonant capacitance Main Function is and resonance ejection coil forms resonant ring, resonant capacitance
Secondary role is, it is connected in parallel on the switch ends of switching tube, absorbs the high impulse currents at switching tube two ends, prevents from damaging switch
Pipe；Resonance ejection coil also has two kinds of effects, and one is to form resonant ring with resonant capacitance, and another kind is as launching magnetic energy
Resonance ejection coil.When the control end of switching tube is high level, switching tube turns on, and now resonant capacitance is shorted, due to
The characteristic of resonance ejection coil, determines resonance ejection coil both end voltage and can not suddenly change, accordingly, it is capable to be stored in resonance ejection
In coil；When the control end of switching tube is low level, switching tube ends, and the energy release in resonance ejection coil, to resonance
Electric capacity charges, and in this process, the most of energy in resonance ejection coil is converted to magnetic energy to emission, small part energy
Being stored in resonant capacitance, switching tube constantly repeats said process, and resonance ejection coil is constantly to emission magnetic energy, resonance ejection
Only a kind of frequency of the magnetic energy of coil transmissions, therefore waveform stabilization, harmonic wave is few, and has big specific of output.
Further, resonance circuit can have only to switching tube control end be connected with the output signal end of signal source be
Can, the single supply that i.e. can realize resonance circuit is powered so that resonance circuit is easily controlled.
In any of the above-described radio powered transmitter, resonant capacitance can be equivalent tank electric capacity, resonance ejection coil can
Think equivalent coil；Switching tube can be equivalent switch pipe；Resonance ejection coil can be loose type coil can also be tight
Type coil.
In one coil, if the adjacent coiling of each circle is all close to, referred to as tight type coil；If each circle phase
Space is had then to be referred to as loose type coil between adjacent coiling.
With two with individual (containing two) resonance ejection coils connected in series, parallel connection, series-parallel connection, form an equivalent coil, can replace
For the resonance ejection coil in the embodiment of the present invention.
With two with individual (containing two) resonant capacitance series, parallel, series-parallel connection, form an equivalent tank electric capacity, can replace
For the resonant capacitance C in the embodiment of the present invention.
With two with individual (containing two) paralleled power switches, control electric current to strengthen, form an equivalent switch pipe, can replace
For the switching tube in the embodiment of the present invention.
In any of the above-described radio powered transmitter embodiment, signal source SG can include N number of driving amplifier, signal source
In the N road signal that SG produces, each road signal exports to resonance ejection device via a driving amplifier.By N number of driving amplifier collection
Become in signal source, may insure that the intensity of N road signal.
It is understood that driving amplifier can also be not integrated in signal source, any of the above-described radio is powered transmitting
In machine, resonance ejection device may include that and includes a driving amplifier, the input of described driving amplifier and described signal source
One signal output part is connected, and the outfan of described amplifier is connected with the control end of described switching tube.
As it is shown in figure 9, be the circuit diagram of complementary type wireless power transmitter.In Fig. 9, SG represents signal source, S1, S2 ...
Sn is the N road complementary PWM signals that it produces；A1, A2 ... An represents N number of driving amplifier respectively；P1, P2 ... Pn table respectively
Show resonance circuit, wherein T1, a T2 ... Tn is respectively a switching tube, L1, L2 ... Ln represents that a resonance is sent out respectively
Ray circle, C1, C2 ... Cn represents a resonant capacitance respectively.Wherein, T1, T2 ... Tn can be MOSFET or IGBT.
Switching tube in Fig. 9 is MOSFET, naturally it is also possible to for IGBT.
In any of the above-described complementary type wireless power transmitter, signal source SG, driving amplifier share low-tension supply Vd,
Resonance circuit shares high voltage power supply V+, and signal source SG, driving amplifier, resonance circuit are the most altogether.
" " be a relative level be the reference point of zero, be often referred to the negative pole of power supply.
It should be noted that each embodiment in this specification all uses the mode gone forward one by one to describe, each embodiment weight
Point explanation is all the difference with other embodiments, and between each embodiment, identical similar part sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (9)
1. a complementary type wireless power transmitter, it is characterised in that including:
Signal source, described signal source has N number of signal output part, and described signal source generates N road signal, each road signal correspondence one
Signal output part, the frequency of described N road signal is identical, and the phase contrast of described N road signal is 360 °/N, and N is for be less than more than or equal to 2
Positive integer equal to 360；
N number of resonance ejection device, the input of each resonance ejection device is connected with a signal output part of described signal source, Mei Yisuo
State resonance ejection device and include that resonance circuit, described resonance circuit include resonance ejection coil and resonant capacitance；N number of described resonance is sent out
The angle of ray circle place plane is predetermined angle.
Complementary type wireless power transmitter the most according to claim 1, it is characterised in that described resonance circuit also includes: open
Guan Guan, wherein:
Described resonance ejection coil one end is connected with one end of described resonant capacitance, the other end of described resonance ejection coil and electricity
Source positive pole is connected, the other end ground connection of described resonant capacitance, and the control end of described switching tube is defeated with a signal of described signal source
Go out end to be connected；First end of described switching tube is connected with one end of described resonant capacitance, and the second end of described switching tube is with described
The other end of resonant capacitance is connected.
3. according to the arbitrary described complementary type wireless power transmitter of claim 1 to 2, it is characterised in that described signal source includes N
Individual driving amplifier, each road signal that described signal source produces exports via driving amplifier described in, and N number of described driving is put
N number of signal output part that outfan is described signal source of big device.
4. according to the arbitrary described complementary type wireless power transmitter of claim 1 to 2, it is characterised in that each described resonance is sent out
Emitter includes that a driving amplifier, the input of described driving amplifier are connected with a signal output part of described signal source, institute
The control end of the outfan and described switching tube of stating driving amplifier is connected.
Complementary type wireless power transmitter the most according to claim 2, it is characterised in that described switching tube be MOSFET or
IGBT。
Complementary type wireless power transmitter the most according to claim 2, it is characterised in that described resonant capacitance is equivalent tank
Electric capacity, described resonance ejection coil are equivalent tank transmitting coil and/or described switching tube is equivalent switch pipe.
Complementary type wireless power transmitter the most according to claim 1, it is characterised in that the N road letter of described signal source output
Number it is pwm signal.
Complementary type wireless power transmitter the most according to claim 1, it is characterised in that the N road letter of described signal source output
Number frequency identical with the resonant frequency of described resonance ejection coil and resonant capacitance.
Complementary type wireless power transmitter the most according to claim 1, it is characterised in that the dutycycle of described N road signal is little
In 50%.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610382109.5A CN105939064A (en) | 2016-06-01 | 2016-06-01 | Complementary wireless power supply transmitter |
| US16/302,622 US10848004B2 (en) | 2016-06-01 | 2016-10-18 | Resonance circuit, wireless power supply transmitter, switch circuit and full-bridge transmitting circuit |
| PCT/CN2016/102444 WO2017206420A1 (en) | 2016-06-01 | 2016-10-18 | Resonance circuit, wireless power supply transmitter, switch circuit and full-bridge transmitting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610382109.5A CN105939064A (en) | 2016-06-01 | 2016-06-01 | Complementary wireless power supply transmitter |
Publications (1)
| Publication Number | Publication Date |
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| CN105939064A true CN105939064A (en) | 2016-09-14 |
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| CN201610382109.5A Pending CN105939064A (en) | 2016-06-01 | 2016-06-01 | Complementary wireless power supply transmitter |
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| WO2017206420A1 (en) * | 2016-06-01 | 2017-12-07 | 中惠创智无线供电技术有限公司 | Resonance circuit, wireless power supply transmitter, switch circuit and full-bridge transmitting circuit |
| WO2018023882A1 (en) * | 2016-08-04 | 2018-02-08 | 中惠创智无线供电技术有限公司 | Amplitude limit control circuit, device and method |
| CN111313567A (en) * | 2020-03-30 | 2020-06-19 | 重庆理工大学 | Array type phase-shift control wireless power transmission system and control method thereof |
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| CN111313567B (en) * | 2020-03-30 | 2021-07-20 | 重庆理工大学 | Array type phase-shift control wireless power transmission system and control method thereof |
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