CN204809991U - Wireless electric power transmission system - Google Patents
Wireless electric power transmission system Download PDFInfo
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- CN204809991U CN204809991U CN201390001032.2U CN201390001032U CN204809991U CN 204809991 U CN204809991 U CN 204809991U CN 201390001032 U CN201390001032 U CN 201390001032U CN 204809991 U CN204809991 U CN 204809991U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 83
- 230000008878 coupling Effects 0.000 claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 230000003071 parasitic effect Effects 0.000 description 36
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 230000005855 radiation Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005036 potential barrier Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/05—Circuit arrangements or systems for wireless supply or distribution of electric power using capacitive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Near-Field Transmission Systems (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Among the wireless electric power transmission system, active electrode (21) the opposition of active electrode (11) and current -collecting device (201) of power transmission device (101), no source electrode (22) the opposition of no source electrode (12) and current -collecting device (201) of power transmission device (101), carry out the electric power transmission based on the capacitance coupling mode from power transmission device (101) to current -collecting device (201), the area of active electrode (21) is greater than the area of active electrode (11), no source electrode (12) and no source electrode (22) make active electrode (11) and active electrode (21) come the opposition between no source electrode (12) and no source electrode (22). Provide from this and to prevent that thereby electric interelectrode unnecessary coupling from improving the wireless electric power transmission system of electric power transmission efficiency.
Description
Technical field
The utility model relates to the wireless power conveying system transmitted electric power from power transmission device to current-collecting device by field coupled mode.
Background technology
As wireless power conveying system, the wireless power conveying system of such as, field coupled mode shown in known patent document 1.Within the system, the active electrode of the active electrode of power transmission device and passive electrode and current-collecting device and passive electrode are close across gap, thus these two electrodes each other capacitive couplings occur, and transmit electric power from power transmission device to current-collecting device.In patent documentation 1, be configured to by passive electrode to be surrounded by source electrode to increase the coupling capacitance between passive electrode in each device of power transmission device and current-collecting device.Thus, inhibit the expansion of unnecessary electric field.
At first technical literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2012-210146 publication
Utility model content
The problem that utility model will solve
But, as described in Patent Document 1 to be configured to by passive electrode to be coated with source electrode like that when, the active electrode of power transmission device (or current-collecting device) and the passive electrode of current-collecting device (or power transmission device) close, sometimes unnecessary coupling capacitance can become large.Further, due to the coupling capacitance that this is unnecessary, the problem of power transfer efficiency decline will be produced.Especially, in the current-collecting devices such as the pocket telephone requiring slimming, along with its slimming, interelectrode distance is close further, therefore produces interelectrode unnecessary coupling.
For this reason, the purpose of this utility model is, provides and can prevent interelectrode unnecessary coupling and the wireless power conveying system improving power transfer efficiency.
For solving the means of problem
The utility model relates to a kind of wireless power conveying system, under the state that current-collecting device is placed in power transmission device, from described power transmission device to described current-collecting device, the electric power carried out based on capacitive coupling is carried, and it is characterized in that, described power transmission device possesses: the 1st plate electrode; 2nd plate electrode; With power transmission side circuit, alternating voltage is put on described 1st plate electrode and described 2nd plate electrode by it, and described current-collecting device possesses: the 3rd plate electrode, and it is opposed that itself and described 1st plate electrode vacate compartment of terrain; 4th plate electrode, it is connected to the reference potential of described current-collecting device, and to vacate compartment of terrain opposed with described 2nd plate electrode; With power side circuit, it is connected with described 3rd plate electrode and described 4th plate electrode, the area of described 3rd plate electrode is greater than the area of described 1st plate electrode, described 2nd plate electrode and described 4th plate electrode make described 1st plate electrode and described 3rd plate electrode opposed between described 2nd plate electrode with described 4th plate electrode.
In this formation, the area of the 3rd plate electrode between the 1st plate electrode and the 4th plate electrode of current-collecting device of power transmission device is greater than the area of the 1st plate electrode, thus can reduce the parasitic capacitance be formed between the 1st plate electrode and the 4th plate electrode.Thereby, it is possible to suppress interelectrode unnecessary coupling, power transfer efficiency can be improved.
Preferably, the distance between described 2nd plate electrode and described 3rd plate electrode is greater than the distance between described 1st plate electrode and described 4th plate electrode.
In this formation, the parasitic capacitance produced between the 2nd plate electrode and the 3rd plate electrode can be suppressed.
The utility model relates to a kind of wireless power conveying system, under the state that current-collecting device is placed in power transmission device, from described power transmission device to described current-collecting device, the electric power carried out based on capacitive coupling is carried, and it is characterized in that, described power transmission device possesses: the 1st plate electrode; 2nd plate electrode, it is arranged in the plane roughly the same with described 1st plate electrode; With power transmission side circuit, alternating voltage is put on described 1st plate electrode and described 2nd plate electrode by it, and described current-collecting device possesses: the 3rd plate electrode, and it is opposed that itself and described 1st plate electrode vacate compartment of terrain; 4th plate electrode, it is opposed that itself and described 2nd plate electrode vacate compartment of terrain, and be arranged in the plane roughly the same with described 3rd plate electrode; With power side circuit, it is connected with described 3rd plate electrode and described 4th plate electrode, the area of described 3rd plate electrode is greater than the area of described 1st plate electrode, and the interval of described 1st plate electrode and described 2nd plate electrode is wider than the interval of described 3rd plate electrode and described 4th plate electrode.
In this formation, the interval of the 1st plate electrode of power transmission device and the 4th plate electrode of current-collecting device broadens, and can reduce the parasitic capacitance produced between electrode.Thereby, it is possible to suppress interelectrode unnecessary coupling, power transfer efficiency is improved.
Preferably, described power transmission device possesses: the 1st bucking electrode, it is connected to the reference potential of described power transmission device, described current-collecting device possesses: the 2nd bucking electrode, it is connected to the reference potential of described current-collecting device, make described 1st plate electrode, described 2nd plate electrode, described 3rd plate electrode and described 4th plate electrode make between described 1st bucking electrode with described 2nd bucking electrode described 1st bucking electrode and described 2nd bucking electrode opposed.
In this formation, the radiation of the noise produced due to the field coupled between the 1st plate electrode and the 3rd plate electrode can be suppressed by the 1st bucking electrode and the 2nd bucking electrode.In addition, because the 3rd plate electrode is greater than the 1st plate electrode, therefore, it is possible to suppress the parasitic capacitance produced between the 1st plate electrode and the 2nd bucking electrode, unnecessary coupling can be avoided.
Preferably, the distance between described 1st bucking electrode and described 3rd plate electrode is greater than the distance between described 1st plate electrode and described 2nd bucking electrode.
In this formation, the parasitic capacitance produced between the 1st bucking electrode and the 3rd plate electrode can be suppressed.
Also can be configured to, described 1st bucking electrode is electrically connected with described 2nd plate electrode, and described 2nd bucking electrode is electrically connected with described 4th plate electrode.
In this formation, bucking electrode and plate electrode can be formed by parts.In addition, the 1st plate electrode and the 3rd plate electrode can be surrounded by plate electrode and bucking electrode respectively, can restraint speckle radiation.
The effect of utility model
According to the utility model, can reducing and be formed in interelectrode parasitic capacitance, by preventing interelectrode unnecessary coupling, thus the efficiency transmitted electric power from power transmission device to current-collecting device can be improved.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the wireless power conveying system involved by present embodiment.
Fig. 2 is the cutaway view under state current-collecting device being placed in power transmission device.
Fig. 3 is the figure of the only active electrode shown in phenogram 2 and passive electrode.
Fig. 4 is the figure of a part for the circuit represented when to create parasitic capacitance between the active electrode and the passive electrode of current-collecting device of power transmission device.
Fig. 5 is the cutaway view under state current-collecting device being placed in power transmission device.
Fig. 6 is power transmission device and current-collecting device active electrode separately and the vertical view of passive electrode.
Fig. 7 is the figure of the only active electrode shown in phenogram 5, passive electrode and bucking electrode.
Fig. 8 is the cutaway view of power transmission device involved by the variation of execution mode 2 and current-collecting device.
Embodiment
(execution mode 1)
Fig. 1 is the circuit diagram of the wireless power conveying system involved by present embodiment.Wireless power conveying system 301 possesses power transmission device 101 and current-collecting device 201.Current-collecting device 201 possesses load RL.This load RL is the battery module comprising secondary cell and charging circuit etc.Further, current-collecting device 201 is the such as portable electric appts possessing this battery module.As portable electric appts, pocket telephone, PDA, portable music player, notebook type PC, digital camera etc. can be enumerated.Current-collecting device 201 is placed in power transmission device 101, and the secondary cell of power transmission device 101 pairs of current-collecting devices 201 charges.
Power transmission device 101 possesses high-frequency generator OSC, step-up transformer TG and inductor LG.High frequency voltage produces the high frequency voltage that circuit OSC produces such as 100kHz ~ tens MHz.The booster circuit be made up of step-up transformer TG and inductor LG boosts to the voltage that high frequency voltage generation circuit OSC produces, and is applied between active electrode 11 and passive electrode 12.Capacitor shown in dotted line in figure is formed in parasitic capacitance between active electrode 11 and passive electrode 12 or physical unit.In addition, active electrode 11 is equivalent to the 1st plate electrode involved by the utility model, and passive electrode 12 is equivalent to the 2nd plate electrode involved by the utility model.
Current-collecting device 201 possesses: reduction voltage circuit, and it is connected with active electrode 21 and passive electrode 22 and is made up of inductor LL and step-down transformer TL; Rectification circuit 27, the alternating voltage after step-down is transformed to direct voltage by it; Dc-dc 28, it exports the direct voltage of regulation to load RL; With load RL.Capacitor shown in dotted line in figure is formed in parasitic capacitance between active electrode 21 and passive electrode 22 or physical unit.In addition, active electrode 21 is equivalent to the 3rd plate electrode involved by the utility model, and passive electrode 22 is equivalent to the 4th plate electrode involved by the utility model.
In this wireless power conveying system 301, current-collecting device 201 is placed in power transmission device 101, between the active electrode 11 and passive electrode 12 of power transmission device 101, apply voltage, thus active electrode 11,21 arranged opposite each other and passive electrode 12,22 there is capacitive coupling separately from each other and produce electric field.Further, transmit electric power to current-collecting device 201 from power transmission device 101 via this electric field.In current-collecting device 201, carried by electric power and the alternating voltage responded to by after step-down, to be rectified and smoothly, and to be applied to load RL.
In the following description, high-frequency generator OSC, step-up transformer TG and inductor LG etc. are summed up as power transmission side circuit 10, inductor LL, step-down transformer TL, rectification circuit 27 and load RL are summed up as power side circuit 20.
Fig. 2 is the cutaway view under the state that current-collecting device 201 is placed in power transmission device 101.In addition, the vertical view of under the state that current-collecting device 201 is placed in power transmission device 101, active electrode 11,21 and passive electrode 22 is also shown in fig. 2.
Power transmission device 101 has resin framework, is provided with the active electrode 11 of substantially rectangular shape becoming current-collecting device 201 in the resin bed 15 of the mounting surface of power transmission device 101 that loads.Active electrode 11 also can paste the inboard (private side) in mounting surface.In addition, the passive electrode 12 of substantially rectangular shape is provided with in the bottom surface of the power transmission device 101 of the side contrary with mounting surface, and opposed with active electrode 11.The area of passive electrode 12 is greater than the area of active electrode 11, and when overlooking, passive electrode 12 is in the shape including source electrode 11.Active electrode 11 along power transmission device 101 mounting surface and arrange, passive electrode 12 along power transmission device 101 bottom surface and arrange, therefore active electrode 11 and passive electrode 12 are from the amount of the roughly thickness of power transmission device 101.These active electrodes 11 and passive electrode 12 have been electrically connected the power transmission side circuit 10 illustrated by Fig. 1.
Current-collecting device 201 has resin framework, becomes the face of the current-collecting device 201 contacted with the mounting surface of power transmission device 101 (hereinafter referred to as the back side when loading.) resin bed 25 in be provided with the active electrode 21 of substantially rectangular shape.The area of active electrode 21 is greater than the area of opposed active electrode 11, and when overlooking, active electrode 21 is in the shape including source electrode 11.The face of the current-collecting device 201 in the side contrary with contact-making surface is (hereinafter referred to as front.) be provided with the passive electrode 22 of substantially rectangular shape, and opposed with active electrode 21.The area of passive electrode 22 is roughly the same with the area of passive electrode 12.In addition, the area of passive electrode 22 is greater than the area of active electrode 21, and when overlooking, passive electrode 22 is in the shape including source electrode 21.Active electrode 21 and passive electrode 22 have been electrically connected the power side circuit 20 illustrated by Fig. 1.
Below, the parasitic capacitance be formed between active electrode 11,21 and passive electrode 12,22 is described.Fig. 3 is the figure of active electrode 11,21 only shown in phenogram 2 and passive electrode 12,22.Cs1 in figure is the parasitic capacitance produced between active electrode 11 and passive electrode 22, and Cs2 is the parasitic capacitance produced between active electrode 21 and passive electrode 12.
Characterize the interval of the active electrode 21 of current-collecting device 201 and the passive electrode 12 of power transmission device 101 with T1, characterize the interval of the active electrode 11 of power transmission device 101 and the passive electrode 22 of current-collecting device 201 with T2.In the case, active electrode 11,21 and passive electrode 12,22 are arranged on power transmission device 101 and current-collecting device 201 respectively, and the relation of T2 < T1 is set up.
As above-mentioned, current-collecting device 201 is portable electric appts, is required slimming.On the other hand, power transmission device 101 is the charging device of portable electric appts, there is not the requirement of the slimming as current-collecting device 201.Therefore, although can expand interval T 1, interval T 2 narrows.(at least there is the trend becoming T1 > T2.) increase interval T 1, thus parasitic capacitance Cs2 can diminish.Specifically, if the active electrode 11 of power transmission device 101 while be 50 ~ 80mm, the active electrode 21 of current-collecting device 201 is that (active electrode 11 of power transmission device 101 side is compared with the active electrode 21 of current-collecting device 201 side for 100mm degree, if while be below 80% degree), when distance then between active electrode 11 and active electrode 12 is 1mm degree, parasitic capacitance CS2 almost becomes 0.But, suppose there is the area of source electrode 21 identical with active electrode 11 or area is less than active electrode 11 when, if interval T 2 narrows, then will produce large parasitic capacitance Cs1.In addition, as an example of the concrete numerical value of T1, T2, T1 is 3.2 ~ 6.0mm, T2 is 1.2 ~ 2.5mm.
Fig. 4 is the figure of a part for the circuit represented when to create parasitic capacitance Cs1 between the active electrode 11 and the passive electrode 22 of current-collecting device 201 of power transmission device 101.If define parasitic capacitance Cs1 between active electrode 11 and passive electrode 22, then a part for the electric power should carried via active electrode 11,21 will also be delivered to passive electrode 22 via parasitic capacitance Cs1.Electric power conveying via this parasitic capacitance Cs1 is not only helpless to from power transmission device 101 to the conveying of the electric power of current-collecting device 201, and loss can be made to increase, and therefore declines from power transmission device 101 to the power transfer efficiency of current-collecting device 201.
For this reason, in the present embodiment, in order to suppress the generation of parasitic capacitance Cs1, as shown in Figure 3, the area of active electrode 21 is made to be greater than the area of active electrode 11.This active electrode 21 becomes potential barrier, and the parasitic capacitance Cs1 produced between active electrode 11 and passive electrode 22 is able to abundant suppression.Thus, the parasitic capacitance Cs1 shown in Fig. 4 becomes fully little, and its result can prevent the decline from power transmission device 101 to the power transfer efficiency of current-collecting device 201.
In addition, shown in Figure 2: make the area of active electrode 21 be greater than the area of active electrode 11, when overlooking, active electrode 21 is set to the shape including source electrode 11, thus reduces the example of parasitic capacitance Cs1.But, be not limited to this, as long as the area playing active electrode 21 is greater than the area of active electrode 11, have at least source electrode 21 fully to suppress the effect of the parasitic capacitance Cs1 produced between active electrode 11 and passive electrode 22 when overlooking, therefore active electrode 21 is without the need to including source electrode 11 completely.
(execution mode 2)
Below, the wireless power conveying system involved by execution mode 2 is described.The circuit of the wireless power conveying system involved by execution mode 2 forms identical with the execution mode 1 illustrated by Fig. 1, therefore omits the description.
Fig. 5 is the cutaway view under the state that current-collecting device 201 is placed in power transmission device 101.Fig. 6 is the vertical view of the respective active electrode 11,21 of power transmission device 101 and current-collecting device 201 and passive electrode 12,22.
In the resin bed 15 of power transmission device 101, rectangular-shaped active electrode 11 and passive electrode 12 are disposed on the same plane.The profile of passive electrode 12 is greater than active electrode 11, is formed with rectangular-shaped notch part 12A at the central portion of passive electrode 12.Active electrode 11 is positioned at notch part 12A.In addition, in the bottom surface of power transmission device 101, the bucking electrode 13 be connected with the reference potential of power transmission device 101 is provided with.Bucking electrode 13 has the size roughly the same with passive electrode 12, and opposed with active electrode 11 and passive electrode 12.Bucking electrode 13 covers the noise radiation produced from coupling part such as active electrode 11 grade.
In the resin bed 25 of current-collecting device 201, active electrode 21 and the passive electrode 22 of substantially rectangular shape are disposed on the same plane.Passive electrode 22 has the size roughly the same with passive electrode 12, is formed with rectangular-shaped notch part 22A at the central portion of passive electrode 22.Active electrode 21 is positioned at this notch part 22A.Active electrode 21 has the area larger than opposed active electrode 11.
At this, characterize the interval of active electrode 11 and passive electrode 12 with T3, characterize the interval of active electrode 21 and passive electrode 22 with T4.In the case, active electrode 11,21 and passive electrode 12,22 are formed as respectively: the relation of T4 < T3 is set up.
In addition, in the front of current-collecting device 201, the bucking electrode 23 be connected with the earthing potential of current-collecting device 201 (reference potential) is provided with.Bucking electrode 23 has the size roughly the same with passive electrode 22, and opposed with active electrode 21 and passive electrode 22.Bucking electrode 23 covers the noise radiation produced from coupling part such as active electrode 21 grade.
Below, the parasitic capacitance be formed between active electrode 11,21 and passive electrode 12,22 is described.Fig. 7 be active electrode only shown in phenogram 5 11,21, the figure of passive electrode 12,22 and bucking electrode 13,23.Cs3 in figure is the parasitic capacitance produced between active electrode 11 and bucking electrode 23, and Cs4 is the parasitic capacitance produced between active electrode 21 and bucking electrode 13.
In the same manner as execution mode 1, in the power transmission device 101 that the requirement of slimming is few, due to device can be made thickening, therefore, it is possible to expand the interval of the active electrode 21 of current-collecting device 201 and the bucking electrode 13 of power transmission device 101, its result can reduce parasitic capacitance Cs4.On the other hand, suppose there is the area of source electrode 21 identical with active electrode 11 or area is less than active electrode 11 when, owing to needing the lower thickness making current-collecting device 201, therefore the narrower intervals of the active electrode 11 of power transmission device 101 and the bucking electrode 23 of current-collecting device 201, will produce large parasitic capacitance Cs3.If produce large parasitic capacitance Cs3, then passive electrode 22 and bucking electrode 23 are connected to reference potential, and therefore active electrode 11 and passive electrode 22, via bucking electrode 23, capacitive coupling occurs.
For this reason, in the present embodiment, as above-mentioned, active electrode 21 is greater than active electrode 11, and be set to the relation of T4 < T3, thus active electrode 21 becomes potential barrier, fully can suppress the parasitic capacitance Cs3 produced between active electrode 11 and bucking electrode 23.Inhibit parasitic capacitance Cs3's as a result, as shown in Figure 4, the decline to the power transfer efficiency of current-collecting device 201 from power transmission device 101 can be prevented.
In addition, if define parasitic capacitance Cs3 between active electrode 11 and bucking electrode 23, then bucking electrode 23 is connected to the reference potential of current-collecting device 201, therefore sometimes via bucking electrode 23 on the reference potential of current-collecting device 201 superimposed noise.In the case, this problem causing the misoperation functionally of current-collecting device 201 will be produced.But in the present embodiment, parasitic capacitance Cs3 is suppressed, the problem of misoperation etc. therefore also can be avoided.
In above-mentioned example, although show active electrode 11 and passive electrode 12 is formed at grade, in addition, active electrode 21 and passive electrode 22 form example at grade, but they may not be configured on the same face completely, observe from the direction overlooking these electrodes, also can be configured to be in context each other, as long as the relation of the area described before having, just can obtain same effect.
In addition, although create parasitic capacitance (not shown) between active electrode 11 and passive electrode 22, the face of active electrode 11 and passive electrode 22 is not opposed yet, the side of electrode is opposite each other, and interval is also wide, therefore parasitic capacitance is little, roughly can ignore.
Below, the variation of execution mode 2 is described.
Fig. 8 is the power transmission device 101 involved by variation of execution mode 2 and the cutaway view of current-collecting device 201.As shown in Figure 8, also can be configured to utilize connecting electrode 14 to come connected with passive electrode 12 and bucking electrode 13 in power transmission device 101.In addition, also can be configured to utilize connecting electrode 24 to be connected with source electrode 21 and bucking electrode 23 in current-collecting device 201.In the case, passive electrode 12, bucking electrode 13 and connecting electrode 14 both can be formed by parts, and passive electrode 12, bucking electrode 13 and connecting electrode 14 also can be respectively independent parts.In addition, passive electrode 22, bucking electrode 23 and connecting electrode 24 both can be formed by parts, and active electrode 21, bucking electrode 23 and connecting electrode 24 also can be respectively independent parts.
And then when the framework of power transmission device 101 and current-collecting device 201 is set to metal frame, bucking electrode 13,23 also can be the bucking electrode that make use of this metal frame.In addition, active electrode 11,21 and passive electrode 12,22 also can be such as toroidal.
Symbol description
11-active electrode (the 1st plate electrode)
12-passive electrode (the 2nd plate electrode)
13-bucking electrode (the 1st bucking electrode)
21-active electrode (the 3rd plate electrode)
22-passive electrode (the 4th plate electrode)
23-bucking electrode (the 2nd bucking electrode)
101-power transmission device
102-current-collecting device
301-wireless power conveying system
Cs1, Cs2, Cs3, Cs4-parasitic capacitance
Claims (6)
1. a wireless power conveying system, under the state that current-collecting device is placed in power transmission device, from described power transmission device to described current-collecting device, the electric power carried out based on capacitive coupling is carried, wherein,
Described power transmission device possesses:
1st plate electrode;
2nd plate electrode; With
Power transmission side circuit, alternating voltage is put on described 1st plate electrode and described 2nd plate electrode by it,
Described current-collecting device possesses:
3rd plate electrode, it is opposed that itself and described 1st plate electrode vacate compartment of terrain;
4th plate electrode, it is connected to the reference potential of described current-collecting device, and to vacate compartment of terrain opposed with described 2nd plate electrode; With
Power side circuit, it is connected with described 3rd plate electrode and described 4th plate electrode,
The area of described 3rd plate electrode is greater than the area of described 1st plate electrode,
Described 2nd plate electrode and described 4th plate electrode make described 1st plate electrode and described 3rd plate electrode opposed between described 2nd plate electrode with described 4th plate electrode.
2. wireless power conveying system according to claim 1, wherein,
Distance between described 2nd plate electrode and described 3rd plate electrode is greater than the distance between described 1st plate electrode and described 4th plate electrode.
3. a wireless power conveying system, under the state that current-collecting device is placed in power transmission device, from described power transmission device to described current-collecting device, the electric power carried out based on capacitive coupling is carried, wherein,
Described power transmission device possesses:
1st plate electrode;
2nd plate electrode, it is arranged in the plane roughly the same with described 1st plate electrode; With
Power transmission side circuit, alternating voltage is put on described 1st plate electrode and described 2nd plate electrode by it,
Described current-collecting device possesses:
3rd plate electrode, it is opposed that itself and described 1st plate electrode vacate compartment of terrain;
4th plate electrode, it is opposed that itself and described 2nd plate electrode vacate compartment of terrain, and be arranged in the plane roughly the same with described 3rd plate electrode; With
Power side circuit, it is connected with described 3rd plate electrode and described 4th plate electrode,
The area of described 3rd plate electrode is greater than the area of described 1st plate electrode,
The interval of described 1st plate electrode and described 2nd plate electrode is wider than the interval of described 3rd plate electrode and described 4th plate electrode.
4. wireless power conveying system according to claim 3, wherein,
Described power transmission device possesses: the 1st bucking electrode, and it is connected to the reference potential of described power transmission device,
Described current-collecting device possesses: the 2nd bucking electrode, and it is connected to the reference potential of described current-collecting device,
Make described 1st plate electrode, described 2nd plate electrode, described 3rd plate electrode and described 4th plate electrode make between described 1st bucking electrode with described 2nd bucking electrode described 1st bucking electrode and described 2nd bucking electrode opposed.
5. wireless power conveying system according to claim 4, wherein,
Distance between described 1st bucking electrode and described 3rd plate electrode is greater than the distance between described 1st plate electrode and described 2nd bucking electrode.
6. the wireless power conveying system according to claim 4 or 5, wherein,
Described 1st bucking electrode is electrically connected with described 2nd plate electrode,
Described 2nd bucking electrode is electrically connected with described 4th plate electrode.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-027331 | 2013-02-15 | ||
| JP2013027331 | 2013-02-15 | ||
| PCT/JP2013/084007 WO2014125731A1 (en) | 2013-02-15 | 2013-12-19 | Wireless power transfer system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204809991U true CN204809991U (en) | 2015-11-25 |
Family
ID=51353750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201390001032.2U Expired - Lifetime CN204809991U (en) | 2013-02-15 | 2013-12-19 | Wireless electric power transmission system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5907307B2 (en) |
| CN (1) | CN204809991U (en) |
| WO (1) | WO2014125731A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2027140B1 (en) * | 2020-12-17 | 2022-07-11 | Herman Johan Mensink Clemens | A method of capacitively transferring energy and a semiconductor component and device for use with the method |
| CN116137464B (en) * | 2023-04-20 | 2023-07-04 | 中国人民解放军海军工程大学 | Electric field type wireless power transmission five-plate coupler and equivalent method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100736053B1 (en) * | 2005-10-24 | 2007-07-06 | 삼성전자주식회사 | Apparatus and method of wireless power sharing by induction method |
| EP2446520A4 (en) * | 2009-06-25 | 2017-05-03 | Murata Manufacturing Co., Ltd. | Power transfer system and noncontact charging device |
-
2013
- 2013-12-19 JP JP2015500115A patent/JP5907307B2/en active Active
- 2013-12-19 CN CN201390001032.2U patent/CN204809991U/en not_active Expired - Lifetime
- 2013-12-19 WO PCT/JP2013/084007 patent/WO2014125731A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JP5907307B2 (en) | 2016-04-26 |
| WO2014125731A1 (en) | 2014-08-21 |
| JPWO2014125731A1 (en) | 2017-02-02 |
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