CN103959604B - Wireless power transmission device - Google Patents

Wireless power transmission device Download PDF

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Publication number
CN103959604B
CN103959604B CN201380001945.9A CN201380001945A CN103959604B CN 103959604 B CN103959604 B CN 103959604B CN 201380001945 A CN201380001945 A CN 201380001945A CN 103959604 B CN103959604 B CN 103959604B
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China
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coil
power supply
resonator
power transmission
electric
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CN103959604A (en
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畑中武藏
津田尚
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Nitto Denko Corp
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Nitto Denko Corp
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Priority claimed from JP2012257524A external-priority patent/JP6095957B2/en
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Publication of CN103959604A publication Critical patent/CN103959604A/en
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Abstract

The coil surface of the power supply resonator (22) of power supply module (202) is configured towards each other with the coil surface by piezo resonator (32) by electric module (203), in the cylindric magnetic component (23) and (33) of power supply resonator (22) and the coil inner peripheral surface side configuration covering power supply resonator (22) by piezo resonator (32) and the coil inner peripheral surface entirety by piezo resonator (32), make magnetic field in power supply resonator (22) with being carried out electric power transmission by change between piezo resonator (32), blocked from there through magnetic component (23) and (33) in power supply resonator (22) and by the magnetic field produced around piezo resonator (32), so as to compared with being configured without the situation of magnetic component (23) and (24), make to improve from power supply module (202) to the power transmission efficiency of energy when being transmitted electric power by electric module (203).

Description

Wireless power transmission device
Technical field
The present invention relates to a kind of wireless power transmission device for transmitting electric power in a non contact fashion.
Background technology
In recent years, notebook type PC (personal computer：Personal computer), plate PC, digital camera, just The people such as hand portable phone can carry the small-sized electronic equipment used and just popularize rapidly.Moreover, big in these electronic equipments Part cargo shipment has rechargeable battery, and needs periodically to be charged.In order that the charging to the rechargeable battery of these electronic equipments is made Industry becomes simple, is transmitted by the electric power using wireless mode between electric supply installation and the current-collecting device for being loaded into electronic equipment The equipment that power supply technique (making changes of magnetic field to carry out the wireless power tranmission techniques of electric power transmission) is charged to rechargeable battery Just it is continuously increased.
For example, as wireless power tranmission techniques, can include and carry out electric power transmission using the electromagnetic induction between coil Technology (referring for example to patent document 1), between the resonator (coil) that possesses by using electric supply installation and current-collecting device Covibration makes magnetic coupling and carries out the technology of electric power transmission (referring for example to patent document 2).
In this wireless power tranmission techniques, when wirelessly being transmitted, passed with electric power in a wired fashion Send to compare and generate big transmission loss, therefore reduce transmission loss, improve power transmission efficiency (the electric power phase that current-collecting device is received The ratio of the electric power conveyed for electric supply installation) turn into big problem.
In order to solve this problem, for example Patent Document 2 discloses a kind of following wireless power transmission device：Even if In the case of being changed in power transmission resonance coil and by the distance between electric resonance coil, it can also be resonated by changing power transmission The resonant frequency of coil and the resonant frequency by electric resonance coil, come gradually change power transmission resonance coil with by electric resonance coil it Between stiffness of coupling maintain resonant condition, power transmission efficiency thus, it is possible to improve the electric power from from power transmission device to current-collecting device. In addition, Patent Document 3 discloses a kind of following wireless power device：By making the coupling of power transmission coil and electricity reception coil strong Degree change, it is possible to increase the overall power transmission efficiency of device.Also, Patent Document 4 discloses a kind of following electric power system： Power supply resonance coil is set and by electric resonance coil, when supply electric power in a non contact fashion between power coil and electricity reception coil When, detection power supply resonance coil with this apart from c with by the distance between electric resonance coil c, correspondingly to power coil and powering Resonance coil apart from a and electricity reception coil with being carried out variable adjustment apart from b by electric resonance coil so that power supplying efficiency is most Greatly.
Patent document 1：No. 4624768 publications of Japanese Patent No.
Patent document 2：Japanese Unexamined Patent Publication 2010-239769 publications
Patent document 3：Japanese Unexamined Patent Publication 2010-239777 publications
Patent document 4：Japanese Unexamined Patent Publication 2010-124522 publications
The content of the invention
Problems to be solved by the invention
Really, power transmission efficiency can be improved by technology disclosed above.However, it is necessary to become in technology disclosed above The control device of more resonant frequency, make control device that the stiffness of coupling between two resonators changes, to power coil and power supply The distance and electricity reception coil of resonance coil and the control device being adjusted by the distance of electric resonance coil, not only structure become The increase of complicated and cost.
Therefore, it is an object of the invention to provide a kind of following wireless power transmission device：Unlike the past using change The control device of more resonant frequency, make control device that the stiffness of coupling between two resonators changes, to power coil and power supply The distance and electricity reception coil of resonance coil and the control device being adjusted by the distance of electric resonance coil, it becomes possible to by more Power transmission efficiency is improved for simple structure.
The solution used to solve the problem
One of invention for solving above-mentioned problem is that one kind makes magnetic field come in power supply module and by change between electric module Carry out the wireless power transmission device of electric power transmission, it is characterised in that above-mentioned power supply module and above-mentioned possessed by electric module：Line Circle；And magnetic component, its cover coil and the above-mentioned face opposite by the coil in electric module in above-mentioned power supply module of removing with Outer at least a portion.
According to said structure, magnetic component covering is except the coil in power supply module and by the opposite face of the coil in electric module At least a portion in addition, thus when make magnetic field power supply module and by between electric module change to carry out electric power transmission when, energy Enough make from power supply module to situation phase of the power transmission efficiency by energy during electric module transmission electric power with being configured without magnetic component Than improving.
In addition, on one of invention for solving above-mentioned problem, it is characterised in that in above-mentioned wireless power transmission device In, above-mentioned magnetic component is matched somebody with somebody in the way of covering the coil in power supply module and/or the inner peripheral surface by the coil in electric module Put.
According to said structure, by magnetic component to cover coil in power supply module and/or by the coil in electric module The mode of inner peripheral surface is configured, and is thus made magnetic field in power supply module and is being carried out electric power transmission by changing between electric module When, it can make from power supply module to the power transmission efficiency and the coil in power supply module by energy during electric module transmission electric power And/or the situation of magnetic component is configured without compared to raising by the inner peripheral surface side of the coil in electric module.
In addition, on one of invention for solving above-mentioned problem, it is characterised in that in above-mentioned wireless power transmission device In, above-mentioned magnetic component is matched somebody with somebody in the way of covering the coil in power supply module and/or the outer peripheral face by the coil in electric module Put.
According to said structure, by magnetic component to cover coil in power supply module and/or by the coil in electric module The mode of outer peripheral face is configured, and is thus made magnetic field in power supply module and is being carried out electric power transmission by changing between electric module When, it can make from power supply module to the power transmission efficiency and the coil in power supply module by energy during electric module transmission electric power And/or the situation of magnetic component is configured without compared to raising by the periphery surface side of the coil in electric module.
In addition, on one of invention for solving above-mentioned problem, it is characterised in that in above-mentioned wireless power transmission device In, above-mentioned magnetic component is opposite relative to the coil in above-mentioned power supply module and the above-mentioned coil by electric module to cover Face configures for the mode in the face of opposite side.
According to said structure, by magnetic component with cover relative to the coil in power supply module with by the coil in electric module Opposite face is configured for the mode in face of opposite side, thus when making magnetic field in power supply module and by changing to come between electric module When carrying out electric power transmission, with being opposite side in the coil in relative to power supply module and by the opposite face of the coil in electric module The situation that face is configured without magnetic component is compared, and can be made from power supply module to the power transmission by energy during electric module transmission electric power Efficiency is improved.
In addition, on one of invention for solving above-mentioned problem, it is characterised in that in above-mentioned wireless power transmission device In, the above-mentioned coil by electric module is carried out from the coil in above-mentioned power supply module to transmit using the electric power of covibration.
According to said structure, coil in power supply module and by carrying out utilizing covibration between the coil in electric module Electric power transmission in the case of, it is possible to increase from power supply module to by electric module transmit electric power when energy power transmission efficiency.
In addition, on one of invention for solving above-mentioned problem, it is characterised in that in above-mentioned wireless power transmission device In, the coil in above-mentioned power supply module is power coil and power supply resonator, and the above-mentioned coil by electric module is electricity reception coil And by piezo resonator, led to the power Transmission for being transported to above-mentioned power coil to above-mentioned power supply resonator by electromagnetic induction Crossing makes above-mentioned power supply resonator and above-mentioned will be transported to the electric power of above-mentioned power supply resonator by piezo resonator resonance with magnetic field Can form be sent to from above-mentioned power supply resonator above-mentioned by piezo resonator, will be sent to by electromagnetic induction above-mentioned by electric resonance Thus the power Transmission of device carries out above-mentioned electric power transmission to above-mentioned electricity reception coil.
According to said structure, entered using power coil with power supply resonator and electricity reception coil and by piezo resonator Row using magnetic field resonance manner electric power transmission in the case of, it is possible to increase from power supply module to by electric module transmit electric power when The power transmission efficiency of energy.
The effect of invention
A kind of following wireless power feed system can be provided：Filled unlike the past using the control of change resonant frequency Put, make control device that the stiffness of coupling between two resonators changes, to the distance of power coil and power supply resonance coil with And electricity reception coil and the control device that is adjusted by the distance of electric resonance coil, it becomes possible to pass through more simple structure and improve Power transmission efficiency.
Brief description of the drawings
Fig. 1 is the summary description figure of wireless power transmission device involved in the present invention.
Fig. 2 is the structure chart of the wireless power transmission device involved by comparative example.
Fig. 3 is the curve map for the measurement result for showing the transmission characteristic S21 involved by comparative example.
Fig. 4 is the magnetic field distribution figure involved by comparative example.
Fig. 5 is the structure chart of the wireless power transmission device involved by embodiment 1.
Fig. 6 is the curve map for the measurement result for showing the transmission characteristic S21 involved by embodiment 1.
Fig. 7 is the magnetic field distribution figure involved by embodiment 1.
Fig. 8 is the structure chart of the wireless power transmission device involved by embodiment 2.
Fig. 9 is the curve map for the measurement result for showing the transmission characteristic S21 involved by embodiment 2.
Figure 10 is the magnetic field distribution figure involved by embodiment 2.
Figure 11 is the structure chart of the wireless power transmission device involved by embodiment 3.
Figure 12 is the curve map for the measurement result for showing the transmission characteristic S21 involved by embodiment 3.
Figure 13 is the magnetic field distribution figure involved by embodiment 3.
Figure 14 is the curve map for the measurement result for showing power transmission efficiency.
Figure 15 is the structure chart of the wireless power transmission device involved by the second comparative example.
Figure 16 is the structure chart of the wireless power transmission device involved by second embodiment.
Figure 17 is the curve for the measurement result for showing the second comparative example and the transmission characteristic S21 involved by second embodiment Figure.
Figure 18 is the curve map for the measurement result for showing the second comparative example and the power transmission efficiency involved by second embodiment.
Figure 19 is the structure chart of the wireless power transmission device involved by the 3rd comparative example.
Figure 20 is the structure chart of the wireless power transmission device involved by 3rd embodiment.
Figure 21 is the curve for the measurement result for showing the 3rd comparative example and the transmission characteristic S21 involved by 3rd embodiment Figure.
Figure 22 is the curve map for the measurement result for showing the 3rd comparative example and the power transmission efficiency involved by 3rd embodiment.
Figure 23 is the structure chart of the wireless power transmission device involved by the 4th comparative example.
Figure 24 is the structure chart of the wireless power transmission device involved by fourth embodiment.
Figure 25 is the curve for the measurement result for showing the 4th comparative example and the transmission characteristic S21 involved by fourth embodiment Figure.
Figure 26 is the curve map for the measurement result for showing the 4th comparative example and the power transmission efficiency involved by fourth embodiment.
Figure 27 is the structure chart of the wireless power transmission device involved by the 5th comparative example.
Figure 28 is the structure chart of the wireless power transmission device involved by the 5th embodiment.
Figure 29 is the curve for the measurement result for showing the 5th comparative example and the transmission characteristic S21 involved by the 5th embodiment Figure.
Figure 30 is the curve map for the measurement result for showing the 5th comparative example and the power transmission efficiency involved by the 5th embodiment.
Embodiment
Below, wireless power transmission device involved in the present invention is illustrated based on embodiment and embodiment.
(summary)
As shown in figure 1, wireless power transmission device 200 involved in the present invention has power supply module 202 and by electric module 203, wherein, the power supply module 202 possess power coil 21 and power supply resonator 22 (coil), should by electric module 203 possess by Electric coil 31 and by piezo resonator 32 (coil), so that the coil surface of the power supply resonator 22 and the coil surface by piezo resonator 32 Mode toward each other configures power supply resonator 22 and by piezo resonator 32.In addition, power supply module 202 and by electric module 203 Possess magnetic component 23 and 33, the magnetic component 23 and 33 covering except power supply resonator 22 with by the opposite face of piezo resonator 32 with Outer at least a portion.Specifically, the cylindrical shape of magnetic component 23, is configured in the way of covering coil inner peripheral surface entirety In the coil inner peripheral surface side of power supply resonator 22.Similarly, the also cylindrical shape of magnetic component 33, whole to cover coil inner peripheral surface The mode of body is configured in the coil inner peripheral surface side by piezo resonator 32.In addition, the power coil 21 of power supply module 202 with it is aftermentioned The lead-out terminal 111 of network analyser 110 be connected by distribution, can be with arbitrary frequency from lead-out terminal 111 to confession Electric coil 21 exports alternating electromotive force.In addition, by the electricity reception coil 31 and the input terminal 112 of network analyser 110 of electric module 203 It is connected by distribution, the electric power that input terminal 112 is input to from electricity reception coil 31 can be measured.Moreover, utilizing covibration Make changes of magnetic field and carried out electric power biography by piezo resonator 32 by electric module 203 from 22 pairs of the resonator of powering of power supply module 202 Send, thus, it is possible to be blocked using magnetic component 23 and 33 in power supply resonator 22 and by the magnetic produced around piezo resonator 32 , so that with making to transmit electric power from power supply module 202 to by electric module 203 compared with being configured without the situation of magnetic component 23 and 33 When energy power transmission efficiency improve.
Here, power supply resonator 22 that power supply module 202 possesses and by electric module 203 possess by piezo resonator 32 It is coil formed by coiled wires, copper film is formed on polyimide substrate for example, can include, passes through on the copper film Spiral helicine coil that etching etc. is made, solenoid shape ground coil, coil of ring-type etc. formed by coiled wires.In addition, altogether Phenomenon of shaking refers to that more than two coils are tuned with resonant frequency.In addition, so-called to make coil and the opposite mode of coil Configuration, refers to the radial section of coil as coil surface, make coil surface each other in non-orthogonal mode toward each other ordinatedly Configuration.In addition, power transmission efficiency is ratio of the electric power relative to the electric power that power supply module 202 is conveyed received by electric module 203.
(first embodiment)
Then, by measuring magnetic field intensity, transmission characteristic " S21 " and power transmission efficiency, to by the power supply in power supply module Resonator 22 with by electric module by piezo resonator 32 in opposite directions configure, to cover at least a portion in addition to these forward surfaces Mode configure the wireless power transmission device 200,300,400 (embodiment 1~3) of magnetic component and be configured without magnetic structure The wireless power transmission device 100 (comparative example) of part is illustrated.
(structure of the wireless power transmission device 100 involved by comparative example)
As shown in Fig. 2 the wireless power transmission device 100 used in comparative example possesses power supply module 102 and by electric module 103, wherein, the power supply module 102 possesses power coil 21 and power supply resonator 22, should be possessed electricity reception coil by electric module 103 31 and by piezo resonator 32.Moreover, power coil 21 is with network analyser 110, (Agilent Technologies shares are limited Company system) lead-out terminal 111 be connected.In addition, electricity reception coil 31 is connected with the input terminal 112 of network analyser 110. It is existing by resonance when to 102 supply electric power of power supply module in the wireless power transmission device 100 constituted by this way As electric power is supplied to by piezo resonator 32 in magnetic field energy form from power supply resonator 22.
Network analyser 110 can export alternating electromotive force from lead-out terminal 111 to power coil 21 with arbitrary frequency.Separately Outside, network analyser 110 can measure the electric power that input terminal 112 is input to from electricity reception coil 31.Also, network analyser 110 detailed content is aftermentioned, but is set to measure the effect of the power transmission shown in transmission characteristic " S21 " and Figure 14 shown in Fig. 3 etc. Rate.
Power coil 21 plays following effect：By electromagnetic induction by the power supply obtained from network analyser 110 to Power supply resonator 22.The power coil 21 encloses line footpath for 1mm φ copper wire material (have insulating coating) coiling one, and by line Loop diameter is set as 80mm φ.
Electricity reception coil 31 plays following effect：It will be sent in magnetic field energy form from power supply resonator 22 by piezo resonator 32 Electric power the input terminal 112 of network analyser 110 is output to by electromagnetic induction., should be by electricity in the same manner as power coil 21 Coil diameter is set as 80mm φ by copper wire material (the having insulating coating) circle of coiling one of line footpath for 1mm φ by coil 31.
Power resonance coil 22 and be LC resonant circuits respectively by electric resonance coil 32, play and create magnetic field resonance shape The effect of state.In addition, in the present embodiment, the capacitor composition of LC resonant circuits is realized by element, but it is also possible to will Open to realize the capacitor composition of LC resonant circuits by parasitic capacitance in the two ends of coil.In the LC resonant circuits, as general When inductance is set to L, condenser capacity is set into C, the f using (formula 1) decision is resonant frequency.
... (formula 1)
In addition, power supply resonator 22 and be (to cover line footpath with insulation for 1mm φ copper wire material by piezo resonator 32 Film) coiling three circle obtained from coil diameter for 100mm φ solenoid type coil.In addition, power supply resonator 22 and by electricity The resonant frequency of resonator 32 is 13.0MHz.In addition, so that the coil surface and the coil by piezo resonator 32 of power supply resonator 22 Opposite mode configures power supply resonator 22 and by piezo resonator 32 in parallel with each other in face.
As described above, working as makes the resonant frequency of power supply resonator 22 with being resonated by piezo resonator 32 in power supply resonator 22 During with by createing magnetic field resonant condition between piezo resonator 32, electric power can be passed in magnetic field energy form from power supply resonator 22 It is sent to by piezo resonator 32 (the electric power transmission that make use of the covibration between coil).
In addition, power coil 21 is set as into 15mm with power supply the distance between resonator 22 A, by electricity reception coil 31 with by The distance between piezo resonator 32 B is set as 15mm, by power supply resonator 22 with being set as by the distance between piezo resonator 32 C 30mm (reference picture 2).
(measurement result of comparative example)
To measured using the wireless power transmission device 100 involved by comparative example magnetic field intensity, transmission characteristic " S21 " And the measurement result of power transmission efficiency is illustrated.In addition, the measurement on magnetic field intensity, is entered by using electromagnetic field analysis Row analysis, shows magnetic field intensity to measure with tone.
First, using network analyser 110 while changing the frequency for the alternating electromotive force for being supplied to wireless power transmission device 100 Rate to the transmission characteristic " S21 " of the wireless power transmission device 100 involved by comparative example while measure.Now, such as Fig. 3 Shown in curve map, the longitudinal axis is set to transmission characteristic by the frequency for the alternating electromotive force that transverse axis is set to export from lead-out terminal 111 " S21 " is measured.
Here, so-called transmission characteristic " S21 ", represents when have input signal from lead-out terminal 111 by input terminal 112 Signal, represented with decibel, numerical value means that more greatly power transmission efficiency is higher.In addition, as described above, so-called power transmission efficiency, refers to Ratio of the electric power relative to the electric power that power supply module 202 is conveyed received by electric module 203, here, referring to by wireless power Conveyer 101 is connected in the state of network analyser 110, is output to the electric power of input terminal 112 relative to from output end Son 111 is supplied to the ratio of the electric power of power supply module.
It can be seen from the result of measurement, as shown in Figure 3, the measured waveform 141 of measured transmission characteristic " S21 " In the peak separation of lower frequency side and high frequency side.It is fH by the frequency representation of the high frequency side in the peak value separated, by lower frequency side Frequency representation is fL.
Moreover, be fed into the frequency setting of the alternating electromotive force of power supply module 102 for the peak value of the lower frequency side near In the case of frequency fL, power supply resonator 22 mutually turns into resonance state with by piezo resonator 32 with same, flows through power supply resonator 22 Sense of current and flow through by piezo resonator 32 sense of current be equidirectional.By this with the magnetic field under phase resonance pattern Intensity distribution is shown in Fig. 4 (A).It is able to confirm that according to the magnetic field distribution of (A) of the Fig. 4 for the He of piezo resonator 22 Expanded by magnetic field centered on piezo resonator 32.Here, by the electric current of the coil flowed through in power supply module (power supply resonator 22) Direction is referred to as with the sense of current flowed through by the coil (by piezo resonator 32) in electric module for the resonance state of equidirectional With phase resonance pattern.
On the other hand, be fed into the frequency setting of the alternating electromotive force of power supply module 102 for the peak value of high frequency side near Frequency fH in the case of, power supply resonator 22 and by piezo resonator 32 with it is anti-phase turn into resonance state, flow through power supply resonator 22 sense of current is opposite direction with the sense of current flowed through by piezo resonator 32.By the magnetic under the anti-phase resonance mode Field intensity is distributed in Fig. 4 (B) and shown.Also it is able to confirm that for piezo resonator according to the magnetic field distribution of (B) of the Fig. 4 22 and expanded by magnetic field centered on piezo resonator 32.In addition it is possible to confirm power supply resonator 22 with by piezo resonator 32 it Between exist magnetic field low intensity space.Here, by the side of the electric current of the coil flowed through in power supply module (power supply resonator 22) It is referred to as instead for the resonance state of opposite direction to the sense of current with flowing through by the coil (by piezo resonator 32) in electric module Phase resonance pattern.
Then, using same phase resonance mould of the network analyser 110 to the wireless power transmission device 100 involved by comparative example Power transmission efficiency under formula and anti-phase resonance mode is measured.By its measurement result figure 14 illustrates.Now, in Figure 14 song Comparative example and embodiment 1~3 are configured to transverse axis in line chart, power transmission efficiency [%] is recited as the longitudinal axis.
As shown in figure 14, on comparative example, the power transmission efficiency with phase resonance pattern (fL) is 85% (reference picture 14：■ 151).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 69% (reference picture 14：●152).
(structure of the wireless power transmission device 200 involved by embodiment 1)
Then, as shown in figure 5, the wireless power transmission device 200 used in embodiment 1 possess power supply module 202 and by Electric module 203, wherein, the power supply module 202 possesses power coil 21, power supply resonator 22 and covers the power supply resonator 22 The overall cylindric magnetic component 23 of coil inner peripheral surface, should be possessed electricity reception coil 31, by piezo resonator 32 by electric module 203 And covering is by the overall cylindric magnetic component 33 of the coil inner peripheral surface of piezo resonator 32.Moreover, in the same manner as comparative example, Power coil 21 is connected with the lead-out terminal 111 of network analyser 110, electricity reception coil 31 and the input of network analyser 110 Terminal 112 is connected.
23 and 33 resin by being dispersed with Magnaglo of magnetic component is formed.Resin used in the magnetic component 23 and 33 Both it can be that thermosetting resin can also be thermoplastic resin, not limit especially.For example, if thermosetting resin, then Can include epoxy resin, phenolic resin, melmac, vinylester resin, cyano group ester (Cyano ester) resin, Maleimide resin, silicones etc..In addition, if being thermoplastic resin, then acrylic resin, acetic acid second can be included Alkene esters resin, polyvinyl alcohol resin etc..In addition, in the present embodiment, using the resin using epoxy resin as main component.
In addition, for the Magnaglo being dispersed in resin, using soft magnetic powder.As soft magnetic powder, do not make spy Do not limit, pure Fe, Fe-Si, Fe-Al-Si (sendust), Fe-Ni (permalloy), soft magnetic bodies oxysome, Fe can be used The based amorphous body of based amorphous body, Co, Fe-Co (amber pleasant virtue anvil system high-permeability alloy) etc..
Above-mentioned magnetic component 23 and 33 is that 1mm, external diameter are the drum that 80mm φ, internal diameter are 78mm, its magnetic in thickness Conductance is 100.In addition, other structures are identical with the wireless power transmission device 100 involved by comparative example.
(measurement result of embodiment 1)
To measured using the wireless power transmission device 200 involved by embodiment 1 magnetic field intensity, transmission characteristic The measurement result of " S21 " and power transmission efficiency is illustrated.
First, using network analyser 110 while changing the frequency for the alternating electromotive force for being supplied to wireless power transmission device 200 Rate to the transmission characteristic " S21 " of the wireless power transmission device 200 involved by embodiment 1 while measure.
It can be seen from the result of measurement, as shown in Figure 6, the measured waveform 241 of measured transmission characteristic " S21 " In the peak separation of lower frequency side and high frequency side.It is fH by the frequency representation of the high frequency side in the peak value separated, by lower frequency side Frequency representation is fL.
Moreover, be fed into the frequency setting of the alternating electromotive force of power supply module 202 for the peak value of the lower frequency side near (with phase resonance pattern) in the case of frequency fL, power supply resonator 22 mutually turns into resonance state, stream with by piezo resonator 32 with same Through power resonator 22 sense of current and flow through by piezo resonator 32 sense of current be equidirectional.By this with mutually common Magnetic field distribution under pattern of shaking is shown in Fig. 7 (A).According to the magnetic field distribution of (A) of the Fig. 7 be able to confirm that with Comparative example compares ((A) of reference picture 4), can a bit subtract by power supply resonator 22 and by the magnetic field of the inner circumferential side of piezo resonator 32 It is weak.
On the other hand, be fed into the frequency setting of the alternating electromotive force of power supply module 202 for the peak value of high frequency side near Frequency fH in the case of (anti-phase resonance mode), power supply resonator 22 and by piezo resonator 32 with it is anti-phase turn into resonance state, It is opposite direction to flow through the sense of current of power supply resonator 22 and flow through by the sense of current of piezo resonator 32.This is anti-phase Magnetic field distribution under resonance mode is shown in Fig. 7 (B).It is able to confirm that according to the magnetic field distribution of (B) of the Fig. 7 Compared with comparative example ((B) of reference picture 4), power supply and is significantly weakened resonator 22 by the magnetic field of the inner circumferential side of piezo resonator 32.
Then, the same phase resonance using network analyser 110 to the wireless power transmission device 200 involved by embodiment 1 Power transmission efficiency under pattern and anti-phase resonance mode is measured.Its measurement result figure 14 illustrates.
As shown in figure 14, it is 88% (reference picture 14 with the power transmission efficiency under phase resonance pattern (fL) on embodiment 1：■ 251).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 75% (reference picture 14：●252).So, it is known that with comparative example Wireless power transmission device 100 involved by 1 is compared, and the power transmission efficiency of the wireless power transmission device 200 in embodiment 1 is carried It is high.That is, the radio with being configured without in power supply resonator 22 and by the inner peripheral surface side of piezo resonator 32 magnetic component 23 and 33 Power transmission device 100 is compared, and can be carried according to the wireless power transmission device 200 for possessing magnetic component 23 and 33 as described above High power transmission efficiency.
(structure of the wireless power transmission device 300 involved by embodiment 2)
Then, as shown in figure 8, the wireless power transmission device 300 used in embodiment 2 possess power supply module 302 and by Electric module 303, wherein, the power supply module 302 possesses power coil 21, power supply resonator 22, the line of covering power supply resonator 22 Enclose the cylindrical shape of the coil outer peripheral face entirety of the overall cylindric magnetic component 23 of inner peripheral surface and covering power supply resonator 22 Magnetic component 24, should by electric module 303 possess electricity reception coil 31, by piezo resonator 32, covering by piezo resonator 32 coil The overall cylindric magnetic component 33 of inner peripheral surface and covering are by the cylindric of the coil outer peripheral face entirety of piezo resonator 32 Magnetic component 34.Moreover, similarly to Example 1, power coil 21 is connected with the lead-out terminal 111 of network analyser 110, Electricity reception coil 31 is connected with the input terminal 112 of network analyser 110.
In the same manner as the magnetic component 23 and 33 of embodiment 1, magnetic component 24 and 34 is by being dispersed with the resin of Magnaglo Formed.The magnetic component 24 and 34 is 1mm, the drum that external diameter is 120mm φ, internal diameter is 118mm φ, its magnetic conductance in thickness Rate is 100.In addition, other structures are identical with the wireless power transmission device 200 involved by embodiment 1.
(measurement result of embodiment 2)
To measured using the wireless power transmission device 300 involved by embodiment 2 magnetic field intensity, transmission characteristic The measurement result of " S21 " and power transmission efficiency is illustrated.
First, using network analyser 110 while changing the frequency for the alternating electromotive force for being supplied to wireless power transmission device 300 Rate to the transmission characteristic " S21 " of the wireless power transmission device 300 involved by embodiment 2 while measure.
It can be seen from the result of measurement, as shown in Figure 9, the measured waveform 341 of measured transmission characteristic " S21 " In the peak separation of lower frequency side and high frequency side.It is fH by the frequency representation of the high frequency side in the peak value separated, by lower frequency side Frequency representation is fL.
Moreover, being fed into the frequency near the peak value that the frequency setting of the alternating electromotive force of power supply module 302 is the lower frequency side Magnetic field distribution during rate fL (with phase resonance pattern) is shown in Figure 10 (A).According to the magnetic field intensity of (A) of the Figure 10 Distribution is able to confirm that compared with comparative example ((A) of reference picture 4), the magnetic of power supply resonator 22 and the inner circumferential side by piezo resonator 32 Some decreases of field.In addition, being able to confirm that ((A) of reference picture 7) compared with Example 1, power supply resonator 22 is escaped to and by electricity The field weakening of the outer circumferential side of resonator 32.
On the other hand, it is fed near the peak value that the frequency setting of the alternating electromotive force of power supply module 302 is high frequency side The magnetic field distribution of (anti-phase resonance mode) is shown in Figure 10 (B) during frequency fH.It is strong according to the magnetic field of (B) of the Figure 10 Degree distribution is able to confirm that with comparative example compared with ((B) of reference picture 4), and power resonator 22 and the inner circumferential side by piezo resonator 32 Significantly weaken in magnetic field.In addition, be able to confirm that ((B) of reference picture 7) compared with Example 1, escape to power supply resonator 22 and by The field weakening of the outer circumferential side of piezo resonator 32.
Then, the same phase resonance using network analyser 110 to the wireless power transmission device 300 involved by embodiment 2 Power transmission efficiency under pattern and anti-phase resonance mode is measured.Its measurement result figure 14 illustrates.
As shown in figure 14, it is 90% (reference picture 14 with the power transmission efficiency under phase resonance pattern (fL) on embodiment 2：■ 351).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 78% (reference picture 14：●352).So, it is known that with comparative example Wireless power transmission device 100 involved by 1 is compared with the wireless power transmission device 200 involved by embodiment 1, embodiment 2 Wireless power transmission device 300 power transmission efficiency improve.That is, with only in the power supply resonator 22 and inner circumferential by piezo resonator 32 Surface side is configured with magnetic component 23 and compared with 33 wireless power transmission device 200, according to possessing magnetic component as described above 23 and 33 and the wireless power transmission device 300 of magnetic component 24 and 34 can improve power transmission efficiency.
(structure of the wireless power transmission device 400 involved by embodiment 3)
Then, as shown in figure 11, the wireless power transmission device 400 used in embodiment 3 possess power supply module 402 and by Electric module 403, wherein, the power supply module 402 possesses power coil 21, power supply resonator 22, covering power coil 21 and power supply The line of the overall cylindric magnetic component 23 of the coil inner peripheral surface of resonator 22, covering power coil 21 and resonator 22 of powering It is opposite side that the overall cylindric magnetic component 24 of outer peripheral face and covering, which are enclosed, with the coil forward surface for resonator 22 of powering The magnetic component 25 of the ring-type of side, should be possessed electricity reception coil 31, by piezo resonator 32, covering electricity reception coil by electric module 403 31 and by the overall cylindric magnetic component 33 of the coil inner peripheral surface of piezo resonator 32, covering electricity reception coil 31 and by electric resonance The overall cylindric magnetic component 34 of the coil outer peripheral face of device 32 and covering are with the coil forward surface by piezo resonator 32 The magnetic component 35 of the ring-type of the side of opposite side.Moreover, similarly to Example 2, power coil 21 and network analyser 110 Lead-out terminal 111 be connected, electricity reception coil 31 is connected with the input terminal 112 of network analyser 110.
In the same manner as the magnetic component 23 and 33 of embodiment 1, magnetic component 25 and 35 is by being dispersed with the resin of Magnaglo Formed.The magnetic component 25 and 35 is that 1mm, external diameter are the O-ring shape that 120mm, internal diameter are 80mm in thickness, and its magnetic conductivity is 100.In addition, other structures are identical with the wireless power transmission device 300 involved by embodiment 2.
(measurement result of embodiment 3)
To measured using the wireless power transmission device 400 involved by embodiment 3 magnetic field intensity, transmission characteristic The measurement result of " S21 " and power transmission efficiency is illustrated.
First, using network analyser 110 while changing the frequency for the alternating electromotive force for being supplied to wireless power transmission device 400 Rate to the transmission characteristic " S21 " of the wireless power transmission device 400 involved by embodiment 3 while measure.
It can be seen from the result of measurement, as shown in Figure 12, the measured waveform of measured transmission characteristic " S21 " 441 lower frequency side and high frequency side peak separation.It is fH by the frequency representation of the high frequency side in the peak value separated, lower frequency side Frequency representation is fL.
Moreover, being fed into the frequency near the peak value that the frequency setting of the alternating electromotive force of power supply module 402 is the lower frequency side Magnetic field distribution during rate fL (with phase resonance pattern) is shown in Figure 13 (A).According to the magnetic field intensity of (A) of the Figure 13 Distribution is able to confirm that compared with comparative example ((A) of reference picture 4), the magnetic of power supply resonator 22 and the inner circumferential side by piezo resonator 32 Some decreases of field.In addition, being able to confirm that ((A) of reference picture 7) compared with Example 1, power supply resonator 22 is escaped to and by electricity The field weakening of the outer circumferential side of resonator 32.In addition, being able to confirm that ((A) of reference picture 10) compared with Example 2, confession is escaped to Piezo resonator 22 and the field weakening of side by piezo resonator 32.
On the other hand, it is fed near the peak value that the frequency setting of the alternating electromotive force of power supply module 402 is high frequency side The magnetic field distribution of (anti-phase resonance mode) is shown in Figure 13 (B) during frequency fH.It is strong according to the magnetic field of (B) of the Figure 13 Degree distribution is able to confirm that with comparative example compared with ((B) of reference picture 4), and power resonator 22 and the inner circumferential side by piezo resonator 32 Significantly weaken in magnetic field.In addition, be able to confirm that ((B) of reference picture 7) compared with Example 1, escape to power supply resonator 22 and by The field weakening of the outer circumferential side of piezo resonator 32.In addition, being able to confirm that ((B) of reference picture 10) compared with Example 2, escape to Power supply resonator 22 and the field weakening of the side by piezo resonator 32.
Then, the same phase resonance using network analyser 110 to the wireless power transmission device 400 involved by embodiment 3 Power transmission efficiency under pattern and anti-phase resonance mode is measured.By its measurement result figure 14 illustrates.
As shown in figure 14, it is 97% (reference picture 14 with the power transmission efficiency under phase resonance pattern (fL) on embodiment 3：■ 451).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 94% (reference picture 14：●452).So, it is known that with comparative example Wireless power transmission device 200 involved by wireless power transmission device 100, embodiment 1 and the institute of embodiment 2 involved by 1 The wireless power transmission device 300 being related to is compared, and the power transmission efficiency of the wireless power transmission device 400 of embodiment 3 is improved.That is, With only power supply resonator 22 and inner peripheral surface side by piezo resonator 32 and periphery surface side be configured with magnetic component 23 and 33 and Magnetic component 24 is compared with 34 wireless power transmission device 300, according to possessing magnetic component 23 and 33, magnetic as described above The wireless power transmission device 400 of component 24 and 34 and magnetic component 25 and 35 can improve power transmission efficiency.
(second embodiment)
In the wireless power transmission device 200,300,400 of above-mentioned first embodiment, to the supply lines in power supply module Circle and power supply resonator and the cylinder that circular and solenoid type has been used by the electricity reception coil in electric module and by piezo resonator The situation of the coil of shape is illustrated, but in a second embodiment, to the power coil in power supply module and power supply resonator And nothing when having used the coil of square and the tubular of cubic column type by the electricity reception coil in electric module and by piezo resonator Line power transmitting apparatus is illustrated.Specifically, by measuring transmission characteristic " S21 " and power transmission efficiency, to by power supply module In power supply resonator with by being configured in opposite directions by piezo resonator in electric module, in power supply resonator and the coil by piezo resonator Inner peripheral surface side is configured with the wireless power transmission device of the magnetic component of the tubular of the overall cubic column type of covering coil inner peripheral surface 1200 illustrate with the wireless power transmission device 1100 (hereinafter referred to as the second comparative example) for being configured without magnetic component.
(structure of the wireless power transmission device 1100 involved by the second comparative example)
As shown in figure 15, the wireless power transmission device 1100 used in the second comparative example possess power supply module 1102 and by Electric module 1103, wherein, the power supply module 1102 possesses the power coil 1121 in square and the tubular line in cubic column type The power supply resonator 1122 of ring structure, should be possessed in the electricity reception coil 1131 of square and in cubic column type by electric module 1103 Tubular coil construction by piezo resonator 1132.Moreover, in the same manner as first embodiment, power coil 1121 and network analyser 110 lead-out terminal 111 is connected, and electricity reception coil 1131 is connected with the input terminal 112 of network analyser 110.
Power coil 1121 plays following effect：The power supply that will be obtained by electromagnetic induction from network analyser 110 To power supply resonator 1122.The power coil 1121 encloses line footpath for 1mm φ copper wire material (having insulating coating) coiling one, So as in the square that one side is 100mm.
Electricity reception coil 1131 plays following effect：It will be supplied by electromagnetic induction from power supply resonator 1122 in magnetic field energy form The electric power output by piezo resonator 1132 is given to the input terminal 112 of network analyser 110.It is same with power coil 1121 Ground, the electricity reception coil 1131 encloses line footpath for 1mm φ copper wire material (having insulating coating) coiling one, so as to be in one side 100mm square.
Power resonator 1122 and be LC resonant circuits respectively by piezo resonator 1132, performance creates magnetic field resonant condition Effect.Power resonator 1122 and be in the copper wire material (have insulating coating) by line footpath for 1mm φ by piezo resonator 1132 While the tubular coil construction of the cubic column type for 100mm obtained from the circle of coiling three.
In addition, power coil 1121 is set as into 15mm with the distance between resonator 1122 of powering, by resonator of powering 1122 by the distance between piezo resonator 1132 with being set as 30mm, by by between piezo resonator 1132 and electricity reception coil 1131 Distance is set as 15mm.In addition, power supply resonator 1122 and by piezo resonator 1132 resonant frequency be 14.2MHz.In addition, with Making the coil surface of power supply resonator 1122 and the coil surface by piezo resonator 1132, opposite mode configures power supply in parallel with each other Resonator 1122 and by piezo resonator 1132.
(structure of the wireless power transmission device 1200 involved by second embodiment)
As shown in figure 16, the wireless power transmission device 1200 used in second embodiment possess power supply module 1202 and by Electric module 1203, wherein, the power supply module 1202 possesses the power coil 1221 in square, the tubular coil in cubic column type The power supply resonator 1222 of construction and the overall tubular in cubic column type of the coil inner peripheral surface of covering power supply resonator 1222 The magnetic component 1223 of shape, should be possessed the electricity reception coil 1231 in square, the tubular line in cubic column type by electric module 1203 Ring structure by piezo resonator 1232 and covering by the overall cylinder in cubic column type of the coil inner peripheral surface of piezo resonator 1232 The magnetic component 1233 of shape.Moreover, in the same manner as the second comparative example, the output of power coil 1221 and network analyser 110 Terminal 111 is connected, and electricity reception coil 1231 is connected with the input terminal 112 of network analyser 110.
In the same manner as first embodiment, 1223 and 1233 resin by being dispersed with Magnaglo of magnetic component is formed.The magnetic Property component 1223 and 1233 is that 1mm, an outside are that 82mm, inner edge are 80mm, are highly 30mm cubic column type in thickness Barrel shape, its magnetic conductivity is 100.In addition, power coil 1221, power supply resonator 1222, electricity reception coil 1231, by piezo resonator The other structures such as 1232 are identical with the wireless power transmission device 1100 involved by the second comparative example.
(measurement result of the second comparative example and second embodiment)
To the survey for the transmission characteristic " S21 " measured using the wireless power transmission device 1100 involved by the second comparative example Measure the survey of result and the transmission characteristic " S21 " measured using the wireless power transmission device 1200 involved by second embodiment Amount result is illustrated.
Using network analyser 110 while changing the frequency one for the alternating electromotive force for being supplied to wireless power transmission device 1100 While being measured to the transmission characteristic " S21 " of the wireless power transmission device 1100 involved by the second comparative example.Similarly, on one side Change the frequency for the alternating electromotive force for being supplied to wireless power transmission device 1200 while to the radio involved by second embodiment The transmission characteristic " S21 " of power transmission device 1200 is measured.In addition, as described above, transmission characteristic " S21 " is represented from output By the signal of input terminal 112 when terminal 111 have input signal, represented with decibel, numerical value means more greatly power transmission efficiency more It is high.In addition, as described above, so-called power transmission efficiency, refers to the electric power by the reception of electric module relative to the electric power that power supply module is conveyed Ratio, here, referring in the state of wireless power transmission device 101 is connected with network analyser 110, be output to input Ratio of the electric power of terminal 112 relative to the electric power that power supply module is supplied to from lead-out terminal 111.
It can be seen from the result of the measurement of the second comparative example, as shown in Figure 17 (A), measured transmission characteristic Peak separation of the measured waveform 1141 of " S21 " in lower frequency side and high frequency side.By the frequency of the high frequency side in the peak value separated FH is expressed as, the frequency representation of lower frequency side is fL.
On the other hand, it is measured as shown in Figure 17 (B) it can be seen from the result of the measurement of second embodiment Transmission characteristic " S21 " measured waveform 1241 lower frequency side and high frequency side peak separation.Moreover, the height of the peak value separated Both values of the value of the frequency fH of frequency side transmission characteristic " S21 " and the frequency fL of lower frequency side transmission characteristic " S21 " are showd that The value higher than the measured waveform 1141 ((A) of reference picture 17) of the second comparative example.Thus, it is known that with involved by the second comparative example The power transmission efficiency of wireless power transmission device 1100 compare, the power transmission effect of the wireless power transmission device 1200 of second embodiment Rate is improved.That is, it can be seen from transmission characteristic " S21 " measurement result, even if by the power coil 1221 in power supply module 1202 Set with power supply resonator 1222 and by the electricity reception coil 1231 in electric module 1203 and by the coil shape of piezo resonator 1232 For square and the cylindrical shape of cubic column type, with not having in power supply resonator 1122 and by the inner peripheral surface side of piezo resonator 1132 Configuration magnetic component 1223 is compared with 1233 wireless power transmission device 1100, as long as being configured to possess the He of magnetic component 1223 1233 structure can also improve power transmission efficiency.
Then, using the same phase of the wireless power transmission device 1100 involved by 110 pair of second comparative example of network analyser The wireless power transmission device 1200 involved by power transmission efficiency and second embodiment under resonance mode and anti-phase resonance mode Same phase resonance pattern and anti-phase resonance mode under power transmission efficiency measure.By its measurement result figure 18 illustrates.This When, in Figure 18 curve map, the second comparative example and second embodiment are configured to transverse axis, power transmission efficiency [%] is recited as indulging Axle.
The result of measurement is as shown in figure 18, on the second comparative example, is with the power transmission efficiency under phase resonance pattern (fL) 74.3% (reference picture 18：■1151).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 51.8% (reference picture 18：● 1152)。
On the other hand, it is 85.2% (reference picture 18 with the power transmission efficiency under phase resonance pattern (fL) on second embodiment： ■1251).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 67.9% (reference picture 18：●1252).So, it is known that with Wireless power transmission device 1100 involved by second comparative example is compared, the wireless power transmission device 1200 of second embodiment Power transmission efficiency is improved.I.e., it is known that with being configured without magnetic in power supply resonator 1122 and by the inner peripheral surface side of piezo resonator 1132 Component 1223 is compared with 1233 wireless power transmission device 1100, according to possessing magnetic component 1223 and 1233 as described above Wireless power transmission device 1200 can improve power transmission efficiency.
(3rd embodiment)
In the wireless power transmission device 200,300,400 of above-mentioned first embodiment, to the supply lines in power supply module Circle and power supply resonator and the cylinder that circular and solenoid type has been used by the electricity reception coil in electric module and by piezo resonator The situation of the coil of shape is illustrated, in addition, in the wireless power transmission device 1200 of second embodiment, to power supply module In power coil and power supply resonator and used square and four by the electricity reception coil in electric module and by piezo resonator The situation of the coil of the tubular of square-column-shaped is illustrated, in the third embodiment, to the power coil in power supply module and confession Piezo resonator and crescent-shaped is used as shown in Figure 19 by the electricity reception coil in electric module and by piezo resonator and new The wireless power transmission device during coil of the tubular of month type is illustrated.Specifically, by measure transmission characteristic " S21 " and Power transmission efficiency, to by the power supply resonator in power supply module with by being configured in opposite directions by piezo resonator in electric module, in power supply altogether Shake device and be configured with by the coil inner peripheral surface side of piezo resonator the overall meniscus of covering coil inner peripheral surface tubular magnetic structure The wireless power transmission device 1400 of part and the wireless power transmission device 1300 the (the hereinafter referred to as the 3rd for being configured without magnetic component Comparative example) illustrate.
(structure of the wireless power transmission device 1300 involved by the 3rd comparative example)
As shown in figure 19, the wireless power transmission device 1300 used in the 3rd comparative example possess power supply module 1302 and by Electric module 1303, wherein, the power supply module 1302 possesses the power coil 1321 in crescent-shaped and the tubular line in meniscus The power supply resonator 1322 of ring structure, should be possessed in the electricity reception coil 1331 of crescent-shaped and in meniscus by electric module 1303 Tubular coil construction by piezo resonator 1332.Moreover, in the same manner as first embodiment, power coil 1321 and network analyser 110 lead-out terminal 111 is connected, and electricity reception coil 1331 is connected with the input terminal 112 of network analyser 110.
Power coil 1321 plays following effect：The power supply that will be obtained by electromagnetic induction from network analyser 110 To power supply resonator 1322.The power coil 1321 encloses line footpath for 1mm φ copper wire material (having insulating coating) coiling one, So as to as shown in Figure 19 be in by the outer diameter of a circle of the coil of power coil 1321 be set to 60mm, inner circle a diameter of 30mm Crescent-shaped.
Electricity reception coil 1331 plays following effect：It will be passed by electromagnetic induction from power supply resonator 1322 in magnetic field energy form The electric power output by piezo resonator 1332 is sent to the input terminal 112 of network analyser 110.It is same with power coil 1321 Ground, the electricity reception coil 1331 encloses line footpath for 1mm φ copper wire material (have insulating coating) coiling one, so that in will be by electric wire The outer diameter of a circle of the coil of circle 1331 is set to 60mm, a diameter of 30mm of inner circle crescent-shaped.
Power resonator 1322 and be LC resonant circuits respectively by piezo resonator 1332, performance creates magnetic field resonant condition Effect.Power resonator 1322 and by piezo resonator 1332 by copper wire material (the have insulating coating) disk of line footpath for 1mm φ Around three circles (0.1mm is set between line), so that in the crescent that the outer diameter of a circle of coil is set to 60mm, a diameter of 30mm of inner circle The tubular coil construction of type.
In addition, power coil 1321 is set as into 10mm with the distance between resonator 1322 of powering, by resonator of powering 1322 by the distance between piezo resonator 1332 with being set as 8mm, by by between piezo resonator 1332 and electricity reception coil 1331 Distance is set as 10mm.In addition, power supply resonator 1322 and by piezo resonator 1332 resonant frequency be 15.5MHz.In addition, with Making the coil surface of power supply resonator 1322 and the coil surface by piezo resonator 1332, opposite mode configures confession in parallel with each other Piezo resonator 1322 and by piezo resonator 1332.
(structure of the wireless power transmission device 1400 involved by 3rd embodiment)
As shown in figure 20, the wireless power transmission device 1400 used in 3rd embodiment possess power supply module 1402 and by Electric module 1403, wherein, the power supply module 1402 possesses the power coil 1421 in crescent-shaped, the tubular coil in meniscus The magnetic of the tubular of the power supply resonator 1422 of construction and the overall meniscus of the coil inner peripheral surface of covering power supply resonator 1422 Property component 1423, should by electric module 1403 possess the electricity reception coil 1431 in crescent-shaped, the tubular coil in meniscus construct By the magnetic structure of piezo resonator 1432 and covering by the tubular of the overall meniscus of the coil inner peripheral surface of piezo resonator 1432 Part 1433.Moreover, in the same manner as the 3rd comparative example, power coil 1421 is connected with the lead-out terminal 111 of network analyser 110 Connect, electricity reception coil 1431 is connected with the input terminal 112 of network analyser 110.
In the same manner as first embodiment, 1423 and 1433 resin by being dispersed with Magnaglo of magnetic component is formed.The magnetic Property component 1423 and 1433 be in along power supply resonator 1422 and by piezo resonator 1432 inner peripheral surface thickness be 1mm crescent The barrel shape of type, its magnetic conductivity is 100.In addition, power coil 1421, power supply resonator 1422, electricity reception coil 1431, by electricity altogether The other structures such as device 1432 of shaking are identical with the wireless power transmission device 1300 involved by the 3rd comparative example.
(measurement result of the 3rd comparative example and 3rd embodiment)
To the survey for the transmission characteristic " S21 " measured using the wireless power transmission device 1300 involved by the 3rd comparative example Measure the survey of result and the transmission characteristic " S21 " measured using the wireless power transmission device 1400 involved by 3rd embodiment Amount result is illustrated.
Using network analyser 110 while changing the frequency one for the alternating electromotive force for being supplied to wireless power transmission device 1300 While being measured to the transmission characteristic " S21 " of the wireless power transmission device 1300 involved by the 3rd comparative example.Similarly, on one side Change the frequency for the alternating electromotive force for being supplied to wireless power transmission device 1400 while to the radio involved by 3rd embodiment The transmission characteristic " S21 " of power transmission device 1400 is measured.
It can be seen from the measurement result of the 3rd comparative example, as shown in Figure 21 (A), measured transmission characteristic Peak separation of the measured waveform 1341 of " S21 " in lower frequency side and high frequency side.By the frequency of the high frequency side in the peak value separated FH is expressed as, the frequency representation of lower frequency side is fL.
On the other hand, it is measured as shown in Figure 21 (B) it can be seen from the result of the measurement of 3rd embodiment Transmission characteristic " S21 " measured waveform 1441 lower frequency side and high frequency side peak separation.Moreover, the height of the peak value separated Both values of the value of the frequency fH of frequency side transmission characteristic " S21 " and the frequency fL of lower frequency side transmission characteristic " S21 " are showd that The value higher than the measured waveform 1341 ((A) of reference picture 21) of the 3rd comparative example.Thus, it is known that with involved by the 3rd comparative example The power transmission efficiency of wireless power transmission device 1300 compare, the power transmission effect of the wireless power transmission device 1400 of 3rd embodiment Rate is improved.That is, it can be seen from transmission characteristic " S21 " measurement result, even if by the power coil 1421 in power supply module 1402 It is set to new with power supply resonator 1422, by the electricity reception coil 1431 in electric module 1403 and by the coil shape of piezo resonator 1432 The cylindrical shape of month shape and meniscus, with being configured without in power supply resonator 1322 and by the inner peripheral surface side of piezo resonator 1332 Magnetic component 1423 is compared with 1433 wireless power transmission device 1300, as long as being configured to possess magnetic component as described above 1423 and 1433 structure can also improve power transmission efficiency.
Then, using the same phase of the wireless power transmission device 1300 involved by 110 pair of the 3rd comparative example of network analyser The wireless power transmission device 1400 involved by power transmission efficiency and 3rd embodiment under resonance mode and anti-phase resonance mode Same phase resonance pattern and anti-phase resonance mode under power transmission efficiency measure.By its measurement result figure 22 illustrates.This When, in Figure 22 curve map, the 3rd comparative example and 3rd embodiment are configured to transverse axis, power transmission efficiency [%] is recited as indulging Axle.
The result of measurement is as shown in figure 22, on the 3rd comparative example, is with the power transmission efficiency under phase resonance pattern (fL) 38.7% (reference picture 22：■1351).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 9.1% (reference picture 22：● 1352)。
On the other hand, it is 82.3% (reference picture 22 with the power transmission efficiency under phase resonance pattern (fL) on 3rd embodiment： ■1451).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 39.9% (reference picture 22：●1452).So, it is known that with Wireless power transmission device 1300 involved by 3rd comparative example is compared, the wireless power transmission device 1400 of 3rd embodiment Power transmission efficiency is improved.I.e., it is known that with being configured without magnetic in power supply resonator 1322 and by the inner peripheral surface side of piezo resonator 1332 Component 1423 is compared with 1433 wireless power transmission device 1300, according to possessing magnetic component 1423 and 1433 as described above Wireless power transmission device 1400 can improve power transmission efficiency.
(fourth embodiment)
In the wireless power transmission device 200,300,400 of first embodiment, to the power coil in power supply module and Power supply resonator and by the electricity reception coil in electric module and by piezo resonator using coil diameter is set as into 100mm φ's The situation of the coil of same diameter is illustrated, but in the fourth embodiment, to the power coil in power supply module and power supply Resonator and with by piezo resonator used coil diameter different as shown in figure 23 by the electricity reception coil in electric module Wireless power transmission device in the case of coil is illustrated.Specifically, using by the electricity reception coil in electric module and by The coil diameter of the piezo resonator wireless power smaller than the coil diameter of the power coil in power supply module and power supply resonator is passed Send device.Moreover, by measuring transmission characteristic " S21 " and power transmission efficiency, to by the power supply resonator in power supply module and by electricity Being configured in opposite directions by piezo resonator in module, covering line is configured with power supply resonator and by the coil inner peripheral surface side of piezo resonator Enclose the wireless power transmission device 1600 of the overall cylindric magnetic component of inner peripheral surface and be configured without the wireless of magnetic component Power transmitting apparatus 1500 (hereinafter referred to as the 4th comparative example) is illustrated.
(structure of the wireless power transmission device 1500 involved by the 4th comparative example)
As shown in figure 23, the wireless power transmission device 1500 used in the 4th comparative example possess power supply module 1502 and by Electric module 1503, wherein, the power supply module 1502 possesses the power supply resonance of rounded power coil 1521 and cylindrical shape Device 1522, should be possessed by electric module 1503 rounded electricity reception coil 1531 and cylindrical shape by piezo resonator 1532.And And, in the same manner as first embodiment, power coil 1521 is connected with the lead-out terminal 111 of network analyser 110, electricity reception coil 1531 are connected with the input terminal 112 of network analyser 110.
Power coil 1521 plays following effect：The power supply that will be obtained by electromagnetic induction from network analyser 110 To power supply resonator 1522.The power coil 1521 encloses line footpath for 1mm φ copper wire material (having insulating coating) coiling one, So as in the circle (sectional view of reference picture 23) that internal diameter is 54mm φ.
Electricity reception coil 1531 plays following effect：It will be transmitted by electromagnetism sense from power supply resonator 1522 in magnetic field energy form To the electric power output by piezo resonator 1532 to the input terminal 112 of network analyser 110.Line footpath is by the electricity reception coil 1531 1mm φ copper wire material (having insulating coating) coiling one is enclosed, so that in the circle (section of reference picture 23 that internal diameter is 36mm φ Figure).
Power resonator 1522 and be LC resonant circuits respectively by piezo resonator 1532, performance creates magnetic field resonant condition Effect.Power supply resonator 1522 is obtained from line footpath is enclosed for 1mm φ copper wire material (having insulating coating) coiling four The internal diameter of coil is the coil of 54mm φ solenoid type, and resonant frequency is 17.2MHz (sectional view of reference picture 23).The opposing party Face, is coil obtained from line footpath is enclosed for 1mm φ copper wire material (having insulating coating) coiling six by piezo resonator 1532 Internal diameter for 36mm φ solenoid type coil, resonant frequency be 17.2MHz (sectional view of reference picture 23).
In addition, power coil 1521 is set as into 5mm with the distance between resonator 1522 of powering, by resonator of powering 1522 by the distance between piezo resonator 1532 with being set as 18mm, by by between piezo resonator 1532 and electricity reception coil 1531 Distance is set as 5mm.In addition, so that the coil surface and coil surface by piezo resonator 1532 of power supply resonator 1522 are parallel to each other The opposite mode in ground come configure power supply resonator 1522 with by piezo resonator 1532.
(structure of the wireless power transmission device 1600 involved by fourth embodiment)
As shown in Figure 24 sectional view, the wireless power transmission device 1600 used in fourth embodiment possesses power supply module 1602 and by electric module 1603, wherein, the power supply module 1602 possesses rounded power coil 1621, the confession of cylindrical shape The overall cylindric magnetic component 1623 of the coil inner peripheral surface of piezo resonator 1622 and covering power supply resonator 1622, should be by Electric module 1603 possess rounded electricity reception coil 1631, cylindrical shape by piezo resonator 1632 and cover by electric resonance The overall cylindric magnetic component 1633 of the coil inner peripheral surface of device 1632.Moreover, in the same manner as the 4th comparative example, power coil 1621 are connected with the lead-out terminal 111 of network analyser 110, electricity reception coil 1631 and the input terminal of network analyser 110 112 are connected.In addition, in the fourth embodiment, overall using the coil inner peripheral surface for changing covering power supply resonator 1622 Three models (model A1, model A2, the model A3 of the diameter of cylindric magnetic component 1623：Details is aftermentioned) carry out Measurement.
In the same manner as first embodiment, 1623 and 1633 resin by being dispersed with Magnaglo of magnetic component is formed.Moreover, In model A1, as shown in figure 24, magnetic component 1623 is in the drum that internal diameter is that 46mm φ, thickness are 1mm, its magnetic conductivity For 100.In model A2, as shown in figure 24, magnetic component 1623 in the drum that internal diameter is that 37mm φ, thickness are 1mm, its Magnetic conductivity is 100.In model A3, as shown in figure 24, magnetic component 1623 is in the cylinder that internal diameter is that 28mm φ, thickness are 1mm Shape, its magnetic conductivity is 100.In addition, the magnetic component 1633 in model A1, model A2, model A3 is identical in internal diameter 28mm φ, thickness are 1mm drum, and its magnetic conductivity is 100.In addition, power coil 1621, power supply resonator 1622, by Electric coil 1631, by the other structures such as piezo resonator 1632 and the phase of wireless power transmission device 1500 involved by the 4th comparative example Together.
(measurement result of the 4th comparative example and fourth embodiment)
To the survey for the transmission characteristic " S21 " measured using the wireless power transmission device 1500 involved by the 4th comparative example Measure the survey of result and the transmission characteristic " S21 " measured using the wireless power transmission device 1600 involved by fourth embodiment Amount result is illustrated.
Using network analyser 110 while changing the frequency one for the alternating electromotive force for being supplied to wireless power transmission device 1500 While being measured to the transmission characteristic " S21 " of the wireless power transmission device 1300 involved by the 4th comparative example.Similarly, on one side Change the frequency for the alternating electromotive force for being supplied to wireless power transmission device 1600 while to the radio involved by fourth embodiment The transmission characteristic " S21 " of power transmission device 1600 is measured and (model A1, model A2, model A3 measured respectively).
It can be seen from the result of the measurement of the 4th comparative example, as shown in Figure 25 (A), measured transmission characteristic Peak separation of the measured waveform 1541 of " S21 " in lower frequency side and high frequency side.By the frequency of the high frequency side in the peak value separated FH is expressed as, the frequency representation of lower frequency side is fL.
On the other hand, it can be seen from the result of the model A1 of fourth embodiment measurement, as shown in Figure 25 (B), Peak separations of the measured waveform 1641A1 of measured transmission characteristic " S21 " in lower frequency side and high frequency side.Moreover, separation Peak value high frequency side frequency fH transmission characteristic " S21 " value and lower frequency side frequency fL transmission characteristic " S21 " value The two all shows the value higher than the measured waveform 1541 ((A) of reference picture 25) of the 4th comparative example.
In addition, it can be seen from the result of the model A2 of fourth embodiment measurement, it is measured such as shown in Figure 25 (C) Transmission characteristic " S21 " measured waveform 1641A2 lower frequency side and high frequency side peak separation.Moreover, the peak value separated Both values of the value of the frequency fH of high frequency side transmission characteristic " S21 " and the frequency fL of lower frequency side transmission characteristic " S21 " are all shown The value higher than the measured waveform 1541 ((A) of reference picture 25) of the 4th comparative example is gone out.
In addition, it can be seen from the result of the model A3 of fourth embodiment measurement, as shown in Figure 25 (D), being surveyed Peak separations of the measured waveform 1641A3 of the transmission characteristic " S21 " measured in lower frequency side and high frequency side.Moreover, the peak separated Both values of the value of the frequency fH of the high frequency side of value transmission characteristic " S21 " and the frequency fL of lower frequency side transmission characteristic " S21 " All show the value higher than the measured waveform 1541 ((A) of reference picture 25) of the 4th comparative example.
Thus, it is known that compared with the power transmission efficiency of the wireless power transmission device 1500 involved by the 4th comparative example, the 4th The power transmission efficiency of the wireless power transmission device 1600 of embodiment is improved.That is, can according to the measurement result of transmission characteristic " S21 " Know, even if the power coil 1621 in power supply module 1602 is with power supply resonator 1622, by the electricity reception coil in electric module 1603 1631 coils different with coil diameter has been used by piezo resonator 1632, and in power supply resonator 1522 and by piezo resonator 1532 inner peripheral surface side is configured without magnetic component 1623 and compared with 1633 wireless power transmission device 1500, as long as described above The structure for being configured to possess magnetic component 1623 and 1633 like that also being capable of power transmission efficiency.
Then, using the same phase of the wireless power transmission device 1500 involved by 110 pair of the 4th comparative example of network analyser The wireless power transmission device 1600 involved by power transmission efficiency and fourth embodiment under resonance mode and anti-phase resonance mode Power transmission efficiency under the same phase resonance pattern and anti-phase resonance mode of (model A1, model A2, model A3) is measured.Surveyed Measure result figure 26 illustrates.Now, in Figure 26 curve map, by the 4th comparative example, fourth embodiment (model A1), the 4th Embodiment (model A2), fourth embodiment (model A3) are configured to transverse axis, and power transmission efficiency [%] is recited as into the longitudinal axis.
The result of measurement is as shown in figure 26, on the 4th comparative example, is with the power transmission efficiency under phase resonance pattern (fL) 21.6% (reference picture 26：■1551).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 22.3% (reference picture 26：● 1552)。
On the other hand, it is 88.5% with the power transmission efficiency under phase resonance pattern (fL) on fourth embodiment (model A1) (reference picture 26：■1651A1).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 87.6% (reference picture 26：● 1652A1).In addition, being 90.7% (reference with the power transmission efficiency under phase resonance pattern (fL) on fourth embodiment (model A2) Figure 26：■1651A2).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 87.0% (reference picture 26：●1652A2).Separately Outside, it is 92.9% (reference picture 26 with the power transmission efficiency under phase resonance pattern (fL) on fourth embodiment (model A3)：■ 1651A3).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 87.0% (reference picture 26：●1652A3).So, it is known that Compared with the wireless power transmission device 1500 involved by the 4th comparative example, the wireless power transmission device 1600 of fourth embodiment Power transmission efficiency improve.I.e., it is known that even if the power coil 1621 in power supply module 1602 is with power supply resonator 1622, by electric mould Electricity reception coil 1631 in block 1603 coil different with coil diameter has been used by piezo resonator 1632, and in power supply resonator 1522 and the wireless power transmission device of magnetic component 1623 and 1633 is configured without by the inner peripheral surface side of piezo resonator 1532 1500 compare, and can also be improved according to the wireless power transmission device 1600 for possessing magnetic component 1623 and 1633 as described above Power transmission efficiency.
(the 5th embodiment)
In the above-mentioned grade of wireless power transmission device 200, to by power coil 21 and power supply the distance between resonator 22 A Be set as 15mm, by electricity reception coil 31 with by the distance between piezo resonator 32 B being set as 15mm, will power supply resonator 22 with by The distance between piezo resonator 32 C is set as that 30mm situation is illustrated (reference picture 2), but in the 5th embodiment, it is right By power coil with power supply the distance between resonator A and electricity reception coil with being set as by the distance between piezo resonator B 0mm, i.e., it is configured with power coil in the inner circumferential side of power supply resonator, is configured with electricity reception coil in the inner circumferential side by piezo resonator In the case of wireless power transmission device illustrate.Specifically, it is right by measuring transmission characteristic " S21 " and power transmission efficiency Possess and be configured with power coil in the inner circumferential side of power supply resonator and the magnetic of cylindrical shape is configured with the inner circumferential side of power coil The power supply module of component and it is being configured with electricity reception coil by the inner circumferential side of piezo resonator and is being configured with the inner circumferential side of electricity reception coil Cylindric magnetic component by electric module wireless power transmission device 1800 and be configured without the radio of magnetic component Power transmission device 1700 (hereinafter referred to as the 5th comparative example) is illustrated.
(structure of the wireless power transmission device 1700 involved by the 5th comparative example)
As shown in figure 27, the wireless power transmission device 1700 used in the 5th comparative example possesses in power supply resonator 1722 Inner circumferential side be configured with the power supply module 1702 of power coil 1721 and be configured with by the inner circumferential side of piezo resonator 1732 by electricity Coil 1731 by electric module 1703.Moreover, in the same manner as first embodiment, power coil 1721 and network analyser 110 Lead-out terminal 111 is connected, and electricity reception coil 1731 is connected with the input terminal 112 of network analyser 110.
Power coil 1721 plays following effect：The power supply that will be obtained by electromagnetic induction from network analyser 110 To power supply resonator 1722.The power coil 1721 encloses line footpath for 1mm φ copper wire material (having insulating coating) coiling one, So as in the circle that internal diameter is 70mm φ.
Electricity reception coil 1731 plays following effect：It will be passed by electromagnetic induction from power supply resonator 1722 in magnetic field energy form The electric power output by piezo resonator 1732 is sent to the input terminal 112 of network analyser 110.The electricity reception coil 1731 is by line footpath Enclosed for 1mm φ copper wire material (having insulating coating) coiling one, so that in the circle that internal diameter is 70mm φ.
Power resonator 1722 and be LC resonant circuits respectively by piezo resonator 1732, performance creates magnetic field resonant condition Effect.Power supply resonator 1722 and be the copper wire material (have insulating coating) by line footpath for 1mm φ by piezo resonator 1732 The internal diameter of coil is the coil of 100mm φ solenoid type obtained from the circle of coiling three, and resonant frequency is 12.9MHz.
In addition, by power supply resonator 1722 with being set as 30mm by the distance between piezo resonator 1732.
(structure of the wireless power transmission device 1800 involved by the 5th embodiment)
As shown in figure 28, the wireless power transmission device 1800 used in the 5th embodiment possess power supply module 1802 and by Electric module 1803, wherein, the power supply module 1802 power supply resonator 1822 inner circumferential side be configured with power coil 1821 and The inner circumferential side of power coil 1821 is configured with the magnetic component 1823 of cylindrical shape, should be by electric module 1803 by piezo resonator 1832 Inner circumferential side be configured with electricity reception coil 1831 and be configured with the inner circumferential side of electricity reception coil 1831 cylindrical shape magnetic component 1833. Moreover, in the same manner as the 5th comparative example, power coil 1821 is connected with the lead-out terminal 111 of network analyser 110, by electric wire Circle 1831 is connected with the input terminal 112 of network analyser 110.
In the same manner as first embodiment, 1823 and 1833 resin by being dispersed with Magnaglo of magnetic component is formed.The magnetic Property component 1823 and 1833 in internal diameter be 60mm φ, be highly 30mm, the drum that thickness is 1mm, its magnetic conductivity is 100. In addition, power coil 1821, power supply resonator 1822, electricity reception coil 1831, by the other structures such as piezo resonator 1832 and the 5th Wireless power transmission device 1700 involved by comparative example is identical.
(measurement result of the 5th comparative example and the 5th embodiment)
To the survey for the transmission characteristic " S21 " measured using the wireless power transmission device 1700 involved by the 5th comparative example Measure the survey of result and the transmission characteristic " S21 " measured using the wireless power transmission device 1800 involved by the 5th embodiment Amount result is illustrated.
Using network analyser 110 while changing the frequency one for the alternating electromotive force for being supplied to wireless power transmission device 1700 While being measured to the transmission characteristic " S21 " of the wireless power transmission device 1700 involved by the 5th comparative example.Similarly, on one side Change the frequency for the alternating electromotive force for being supplied to wireless power transmission device 1800 while to the radio involved by the 5th embodiment The transmission characteristic " S21 " of power transmission device 1800 is measured.
It can be seen from the result of the measurement of the 5th comparative example, as shown in Figure 29 (A), measured transmission characteristic Peak separation of the measured waveform 1741 of " S21 " in lower frequency side and high frequency side.By the frequency of the high frequency side in the peak value separated FH is expressed as, the frequency representation of lower frequency side is fL.
On the other hand, it is measured as shown in Figure 29 (B) it can be seen from the result of the measurement of the 5th embodiment Transmission characteristic " S21 " measured waveform 1841 lower frequency side and high frequency side peak separation.Moreover, the height of the peak value separated Both values of the value of the frequency fH of frequency side transmission characteristic " S21 " and the frequency fL of lower frequency side transmission characteristic " S21 " are showd that The value higher than the measured waveform 1741 ((A) of reference picture 29) of the 5th comparative example.Thus, it is known that with involved by the 5th comparative example The power transmission efficiency of wireless power transmission device 1700 compare, the power transmission effect of the wireless power transmission device 1800 of the 5th embodiment Rate is improved.That is, it can be seen from transmission characteristic " S21 " measurement result, it is configured with even in the inner circumferential side of power supply resonator 1822 Power coil 1821, electricity reception coil 1831 is being configured with by the inner circumferential side of piezo resonator 1832, with power supply resonator 1722 and Power and enclose 1721 and be configured without the He of magnetic component 1823 by the inner peripheral surface side of piezo resonator 1732 and electricity reception coil 1731 1833 wireless power transmission device 1700 is compared, as long as being configured to the inner circumferential side configuration in power coil 1821 as described above Cylindric magnetic component 1823, also can in the structure of the cylindric magnetic component 1833 of the inner circumferential side configuration of electricity reception coil 1831 Enough improve power transmission efficiency.
Then, using the same phase of the wireless power transmission device 1700 involved by 110 pair of the 5th comparative example of network analyser The wireless power transmission device 1800 involved by power transmission efficiency and the 5th embodiment under resonance mode and anti-phase resonance mode Same phase resonance pattern and anti-phase resonance mode under power transmission efficiency measure.By its measurement result figure 30 illustrates.This When, in Figure 30 curve map, the 5th comparative example and the 5th embodiment are configured to transverse axis, power transmission efficiency [%] is recited as indulging Axle.
The result of measurement is as shown in figure 30, on the 5th comparative example, is with the power transmission efficiency under phase resonance pattern (fL) 80.3% (reference picture 30：■1751).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 49.0% (reference picture 30：● 1752)。
On the other hand, it is 92.1% (reference picture 30 with the power transmission efficiency under phase resonance pattern (fL) on the 5th embodiment： ■1851).In addition, the power transmission efficiency under anti-phase resonance mode (fH) is 72.6% (reference picture 30：●1852).So, it is known that the Compared with the wireless power transmission device 1700 involved by the 5th comparative example, the wireless power transmission device 1800 of five embodiments Power transmission efficiency is improved.I.e., it is known that with being configured without magnetic in power supply resonator 1722 and by the inner peripheral surface side of piezo resonator 1732 Component 1823 is compared with 1833 wireless power transmission device 1700, according to possessing magnetic component 1823 and 1833 as described above Wireless power transmission device 1800 can improve power transmission efficiency.
(embodiment)
Then, the wireless power transmission device illustrated in the above-described embodiments is applied flexibly into example as embodiment simply Illustrate.
For example, above-mentioned wireless power transmission device 200 has power supply module 202 and by electric module 203, wherein, the power supply Module 202 possesses power coil 21 and power supply resonator 22, should be possessed electricity reception coil 31 and by piezo resonator by electric module 203 32, configure power supply altogether in the way of making the coil surface of the power supply resonator 22 and the coil surface by piezo resonator 32 toward each other Shake device 22 and by piezo resonator 32.In addition, being respectively configured in power supply resonator 22 and by the coil inner peripheral surface side of piezo resonator 32 There is the overall cylindric magnetic component 23 and 33 of covering coil inner peripheral surface.Moreover, in this embodiment, being set to following knot Structure：Instead of the lead-out terminal 111 of network analyser 110, by frequency of the AC power via the electric power to being supplied to power supply module 202 The oscillating circuit that rate is adjusted is connected come the power coil 21 with power supply module 202, instead of the input of network analyser 110 Terminal 112, by rechargeable battery is via rectification/stabilization circuit that rectification is carried out to received alternating electromotive force and prevents The charging circuit of charging by the electricity reception coil 31 of electric module 203 come with being connected.
Moreover, in the wireless power transmission device 200 involved by present embodiment, the power supply in the side of power supply module 202 The inner circumferential side (inner circumferential side of magnetic component 23) of resonator 22 is accommodated with oscillating circuit, by the electric side of module 203 by electric resonance The inner circumferential side (inner circumferential side of magnetic component 33) of device 32 is accommodated with rectification/stabilization circuit.In addition it is also possible to by charging circuit and Rechargeable battery is accommodated in the inner circumferential side by piezo resonator 32 by electric module 203.
In the wireless power transmission device 200 constituted as described above, it is supplied to from AC power via oscillating circuit The alternating electromotive force of power coil 21 by power coil 21 and power supply resonator 22 between electromagnetic induction, make use of power supply resonate Device 22 and Wireless transceiver by the resonance (magnetic field resonant condition) between piezo resonator 32 and by piezo resonator 32 with by electric wire Electromagnetic induction between circle 31, rechargeable battery is fed into via rectification/stabilization circuit and charging circuit, and is accumulated to filling In battery.Moreover, when being carried out make use of the power supply of resonance by piezo resonator 32 from 22 pairs of resonator of powering like this, Compared with being configured without the situation of magnetic component 23 and 33, it can make from power supply module 202 to when being transmitted electric power by electric module 203 Electrical energy power transmission efficiency improve.That is, transmission loss during wireless power transmission can be reduced, so as to efficiently right Rechargeable battery is charged.
In addition, in the above-described embodiment, by the configuration of magnetic component 23 and 33 in power supply resonator 22 and by piezo resonator 32 inner peripheral surface side, but it is also possible to as the wireless power transmission device 300 of embodiment 2, is set in the power supply He of resonator 22 The structure of magnetic component 24 and 34 is also configured by the periphery surface side of piezo resonator 32, can also be passed such as the wireless power of embodiment 3 Send device 400 like that, be set in power supply resonator 22 and also configured by the side of piezo resonator 32 knot of magnetic component 25 and 35 Structure.With made power supply module 202, the size by electric module 203, cost correspondingly it is expedient determine magnetic component configuration bit Put, size, shape.
In addition, in above-described embodiment and embodiment, being set to all be provided with magnetic in power supply module and by electric module both sides Property component 23 and 33, magnetic component 24 and 34, the structure of magnetic component 25 and 35, but it is also possible to be set to only in power supply module or The structure of above-mentioned magnetic component is configured with by a side of electric module.
In addition, in above-described embodiment and embodiment, being possessed exemplified with by using power supply module and by electric module Power supply resonator and made magnetic coupling by the covibration between piezo resonator 32 to carry out the technology (magnetic of wireless power transmission The wireless power transmission of field mode of resonance) and be illustrated, but change simultaneously in power supply module and by between electric module making magnetic field Carry out in the technology of electric power transmission also comprising the wireless of the electromagnetic induction type that electric power transmission is carried out using the electromagnetic induction between coil Electric power tranmission techniques (referring for example to patent document 1).In the case of using the wireless power tranmission techniques of the electromagnetic induction type, Magnetic component is configured in the inner peripheral surface side of coil of export electromagnetic induction, periphery surface side, side.
In addition, in above-described embodiment and embodiment, with magnetic component covering power supply resonator 22 and by piezo resonator The mode that 32 inner peripheral surface is overall, outer peripheral face is overall configures magnetic component, but is not necessarily required to that covering inner peripheral surface is overall, outer peripheral face Entirety or magnetic component covering inner peripheral surface, the such structure of a part of outer peripheral face.
In explanation in detail above, in order to which the present invention is more easily understood, entered centered on the part of characteristic Go explanation, but the present invention is not limited to embodiment and embodiment described in detailed description above, additionally it is possible to apply In other embodiment and embodiment, it is understood that its scope of application is extensive as much as possible.In addition, used in this specification Term and grammer use to reliably illustrate the present invention, and the explanation being not meant to limit the present invention and use 's.In addition, if being those skilled in the art, presumably easily it can be released from the concept of the invention described in this specification Other structures, system, method that idea of the invention is included etc..Thus, it should it is considered as being documented in for claims and does not take off From the present invention technological thought in the range of also include equal structure.In addition, in order to fully understand the purpose of the present invention and this The effect of invention, it is desirable to fully with reference to disclosed document etc..
Description of reference numerals
21：Power coil；22：Power supply resonator；23：Magnetic component；31：Electricity reception coil；32：By piezo resonator；33：Magnetic Property component；110：Network analyser；111：Lead-out terminal；112：Input terminal；200：Wireless power transmission device；202：Power supply Module；203：By electric module.

Claims (6)

1. a kind of wireless power transmission device, make magnetic field in power supply module and carried out electric power transmission by changing between electric module, Characterized in that,
Above-mentioned power supply module and it is above-mentioned possessed coil respectively by electric module, and above-mentioned power supply module and it is above-mentioned by electric module extremely Lack the magnetic component of any one at least one of tubular for possessing the inner peripheral surface for covering the coil of itself,
Wherein, oscillating circuit is configured inside the cylinder of the magnetic component of the tubular of above-mentioned power supply module, and/or above-mentioned by electric mould At least one in rectification/stabilization circuit, charging circuit and rechargeable battery is configured inside the cylinder of the magnetic component of the tubular of block It is individual.
2. wireless power transmission device according to claim 1, it is characterised in that
Above-mentioned magnetic component is matched somebody with somebody in the way of covering the coil in power supply module and/or the outer peripheral face by the coil in electric module Put.
3. wireless power transmission device according to claim 1, it is characterised in that
Above-mentioned magnetic component be with cover relative to the coil in above-mentioned power supply module with it is above-mentioned opposite by the coil in electric module Face configured for the mode in the face of opposite side.
4. wireless power transmission device according to claim 1, it is characterised in that also include：
The coil in power supply module and/or the magnetic component configured by the mode of the outer peripheral face of the coil in electric module are covered, or
The coil in power supply module and/or the magnetic component configured by the mode of the outer peripheral face of the coil in electric module are covered, and Cover relative to the coil in above-mentioned power supply module and side of the above-mentioned face opposite by the coil in electric module for the face of opposite side The magnetic component of formula configuration.
5. the wireless power transmission device according to any one of Claims 1 to 4, it is characterised in that
The above-mentioned coil by electric module is carried out from the coil in above-mentioned power supply module to transmit using the electric power of covibration.
6. wireless power transmission device according to claim 5, it is characterised in that
Coil in above-mentioned power supply module is power coil and resonator of powering,
The above-mentioned coil by electric module is electricity reception coil and by piezo resonator,
The power Transmission of above-mentioned power coil will be transported to above-mentioned power supply resonator by electromagnetic induction, by making above-mentioned confession Piezo resonator and it is above-mentioned by piezo resonator resonance by the electric power for being transported to above-mentioned power supply resonator in magnetic field energy form from upper State power supply resonator and be sent to above-mentioned by piezo resonator, the above-mentioned electric power by piezo resonator will be sent to by electromagnetic induction defeated Above-mentioned electricity reception coil is sent to, above-mentioned electric power transmission is thus carried out.
CN201380001945.9A 2012-04-17 2013-05-01 Wireless power transmission device Active CN103959604B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7218196B2 (en) * 2001-02-14 2007-05-15 Fdk Corporation Noncontact coupler
CN102640392A (en) * 2009-12-07 2012-08-15 富士通株式会社 Magnetic-field resonance power transmission device and magnetic-field resonance power receiving device
CN102656648A (en) * 2009-12-17 2012-09-05 丰田自动车株式会社 Shield and vehicle whereupon same is mounted

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5689587B2 (en) * 2009-03-31 2015-03-25 富士通株式会社 Power transmission equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7218196B2 (en) * 2001-02-14 2007-05-15 Fdk Corporation Noncontact coupler
CN102640392A (en) * 2009-12-07 2012-08-15 富士通株式会社 Magnetic-field resonance power transmission device and magnetic-field resonance power receiving device
CN102656648A (en) * 2009-12-17 2012-09-05 丰田自动车株式会社 Shield and vehicle whereupon same is mounted

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