CN110518710A - Tunable three-winding device for long range wireless power transmission - Google Patents
Tunable three-winding device for long range wireless power transmission Download PDFInfo
- Publication number
- CN110518710A CN110518710A CN201910831483.2A CN201910831483A CN110518710A CN 110518710 A CN110518710 A CN 110518710A CN 201910831483 A CN201910831483 A CN 201910831483A CN 110518710 A CN110518710 A CN 110518710A
- Authority
- CN
- China
- Prior art keywords
- coil
- tunable
- wireless power
- power transmission
- long range
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- 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
- H02J50/50—Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices
Abstract
The invention discloses a kind of tunable three-winding devices for long range wireless power transmission, including sequentially connected D.C. regulated power supply, inverter circuit, transmitting coil, tunable repeating coil and receiving coil, the inverter circuit is connect with the driving circuit for generating driving signal；The tunable repeating coil is connected with the coil control device that the number of turns is connected in control coil；Driving signal is transmitted to inverter circuit by the driving circuit, the DC inverter that the inverter circuit inputs the D.C. regulated power supply under the action of driving signal is at alternating current, it is passed through the transmitting coil, energy is transferred to receiving coil by transmitting coil by the coil turn that coil control device adjusts conducting by the tunable repeating coil.The coefficient of coup, but also adjustable quality factor are not only adjusted in tunable repeating coil of the invention, so as to largely improve energy transmission efficiency according to the variation of transmission range, and occupy little space, practical.
Description
Technical field
The present invention relates to a kind of three-winding device more particularly to a kind of tunable three for long range wireless power transmission
Coil device.
Background technique
Require battery and charging.Power cable continually plug, it is both dangerous, it is also unsightly reliable, and be prone to wear.Some chargings
Device, electric wire, socket standard are also not fully unified, and have both caused waste in this way, also form the pollution to environment.
In recent years, magnetic coupling resonant radio can transmit (MCR-WPT) systematic difference and cause extensive concern, for
The system is only when its transmission range is in a particular value, and the efficiency of transmission of system can be only achieved highest, and when transmission
When apart from off-target transmission range, since the coefficient of coup of resonator changes, input impedance and load impedance hinder
Anti- mismatch causes the efficiency of transmission of system the phenomenon that sharp fall occur.However in most of practical applications, transmission range
It is not in a stationary state, so system must adapt to the variation of the distance between transmitting coil and receiving coil, it can
Meets the needs of practical application.
It is cross-linked multiple that 207490619 U of CN discloses a kind of inhibition for long range relay wireless power transmission
Dumbbell coil is closed, more relaying long range relay radio energy transmission systems are constituted using dumbbell type coil, although to a certain extent
The efficiency of transmission during long range wireless power transmission is improved, but makes transmitting coil by switching coil and connects
Take-up circle right opposite increases, and only changes the relative pose of two coils, is not suitable for long distance transmission, and the patent is to apply
Induction type wireless power transmission, transmission range is shorter, and occupancy volume is larger, and control is more complex, and the practicability is poor.
109728654 A of CN discloses a kind of three-winding structure wireless electric energy Transmission system, is sent out using source coil and electric energy
The promotion of efficiency is realized in the weak coupling of the close coupling of ray circle and electric energy transmitting coil and electric energy receiving coil, but should
The problem of structure cannot still change when transmission range changes, the efficiency of transmission dramatic decrease of system.
105656214 B of CN discloses a kind of multi-coil suitching type wireless power transmission coupling device and its control method,
Coupler transmitting terminal actuating coil is switched into the region with receiving end face using transmitting side controller, adjusts coupler transmitting
End and receiving end transverse positional displacement degree, control the angle of flow of switching device in inverter, adjust inverter output power.It should
Structure can be only applied to induction type short range transmission, without advantage during the wireless power transmission of long range, and structure
Complicated, operation is not easy, system occupied space is big.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of tunable three-winding dresses for long range wireless power transmission
It sets, can adapt to the variation of transmission range in magnetic coupling resonance wireless power transmission system, according to the offer of different transmission ranges
Preferably energy transmission efficiency assigned in the distance.
Technical solution: the tunable three-winding device for long range wireless power transmission of the invention, including successively connect
D.C. regulated power supply, inverter circuit, transmitting coil, tunable repeating coil and the receiving coil connect, the inverter circuit and production
The driving circuit connection of raw driving signal；The tunable repeating coil is connected with the coil control dress that the number of turns is connected in control coil
It sets；Driving signal is transmitted to inverter circuit by the driving circuit, and the inverter circuit will be described under the action of driving signal
The DC inverter of D.C. regulated power supply input is at alternating current, alternating current transmission to the transmitting coil, the tunable relaying
Energy is transferred to receiving coil by transmitting coil by the coil turn that coil control device adjusts conducting by coil.
Preferably, the coil control device is switch.
Preferably, at least two switches are connected on the tunable repeating coil, at least two switch control is not
With the coil of the number of turns；The coil turn of each switch control forms different resonant capacitances.
Preferably, first switch, second switch, third switch, the 4th are connected separately on the tunable repeating coil
Switch.
Further, the first switch, second switch, third switch, the 4th switch control coil turn successively
Increase.
Working principle: driving circuit generates the driving signal of driving inverter circuit, and inverter circuit turns the direct current of input
It changes alternating current into, is passed through the alternating current after inversion in transmitting coil, tunable repeating coil is according to the change of system transmission range
Change, adjusts coil turn for energy and receiving coil, turn number N are transmitted to by transmitting coil1、N2Such as with the relationship of coefficient of coup k
Under:
L in formula1L2Respectively indicate the inductance value of transmitting coil and receiving coil, μ0For space permeability, d is transmission range,
S is coil section product, it can be seen that passes through the coefficient of coup between the change adjustable coil of coil turn.
The utility model has the advantages that compared with prior art, the present invention can achieve the following beneficial effects: (1) of the invention tunable
The coefficient of coup, but also adjustable quality factor are not only adjusted in repeating coil, so as to according to the variation of transmission range, largely
Improve energy transmission efficiency.(2) transmitting coil of the invention may be disposed at the inside of tunable repeating coil, solve previous
The big disadvantage of resonance type wireless electric energy transmission system occupied space；(3) The present invention reduces energy in system capacity transmission process
Aerial diffusion.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is loop construction simulation model schematic diagram of the invention；
Fig. 3 is the schematic equivalent circuit of tunable repeating coil of the invention；
Fig. 4 is the simulation result diagram of system effectiveness of the invention with distance change；
Fig. 5 is the curve graph of system efficiency of transmission of the invention with distance change.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawings of the specification.
As shown in Figure 1, wherein 1- D.C. regulated power supply, 2- inverter circuit, 3- driving circuit, 4- transmitting coil, 5- is adjustable
Humorous repeating coil, 6- receiving coil, 701- first switch, 702- second switch, 703- third switch, 704- the 4th are switched.This
A kind of tunable three-winding device for long range wireless power transmission of disclosure of the invention, including sequentially connected DC voltage-stabilizing
Power supply 1, inverter circuit 2, transmitting coil 4, tunable repeating coil 5, receiving coil 6.Wherein, driving circuit 3 and inverter circuit 2
Connection.The D.C. regulated power supply 1 of the present embodiment is using the bright latitude D.C. regulated power supply in the Taiwan SE-600-48, and output voltage
For 12V.Driving circuit 3 uses base chip when 555, model SOP-8, to generate the driving signal of driving inverter circuit 2.This
The inverter circuit 2 of embodiment realizes inversion using 4 IRF450 MOSFET alternate conductions.The coil control device of the present embodiment
For first switch 701, second switch 702, third switch 703, the 4th switch 704, it is respectively connected on tunable repeating coil.
Driving signal is transmitted to inverter circuit 2 by driving circuit 3, and inverter circuit 2 is under the action of driving signal by D.C. regulated power supply 1
The DC inverter of input is controlled by coil and is filled at alternating current, alternating current transmission to transmitting coil 4, tunable repeating coil 5
It sets the coil turn for adjusting and being connected and energy is transferred to receiving coil 6 by transmitting coil 4.The working frequency of the present embodiment is
2MHz, load end are that size is 50 Ω pure resistor loads.
As shown in Fig. 2, being the simulation model schematic diagram of loop construction of the invention, by transmitting coil 4, tunable junction line
Circle 5 and receiving coil 6 form.The transmitting coil 4 and tunable repeating coil 5 of the present embodiment are helical structure, emission lines
Circle 4 and receiving coil 6 are all made of copper air core coil coiling and form.The present embodiment is tunable repeating coil 5 and receiving coil 6
Diameter is all 12cm, and the number of turns of receiving coil 6 is 20.The diameter of transmitting coil 4 is 4cm, the number of turns 10.Transmitting coil 4 is set
In tunable repeating coil 5, the two axial distance is 0.The size of transmitting coil 4 is less than tunable repeating coil 5, tunable
Repeating coil 5 is consistent with the size of receiving coil 6.
As shown in figure 3, be tunable repeating coil 5 of the invention schematic equivalent circuit, the present embodiment it is tunable
Repeating coil 5 is that the coiling of multiturn spiral winding forms, and the coil turn of conducting, hilted broadsword are controlled by four single knife switches of connection
Switch model SS12D07VG4.Four single knife switches are respectively first switch 701, second switch 702, third switch 703,
Four switches 704.Wherein, it is 10 that first switch 701, which controls the number of turns, and it is 20 that second switch 702, which controls the number of turns, and third switch 703 is controlled
The number of turns processed is 30, and it is 40 that the 4th switch 704, which controls the number of turns,.Wherein state 1 indicates only to open tunable repeating coil when switch 1
State；State 2 indicates only to open the state of tunable repeating coil when switch 2；State 3 indicates only to open tunable when switch 3
The state of repeating coil；State 4 indicates only to open the state of tunable repeating coil when switch 4.R1, R2, R3, R4 are respectively indicated
Coil resistance under corresponding four states, C1, C2, C3, C4 respectively indicate the compensating electric capacity under corresponding four states.Pass through closure
Adjustable coil turn is switched, it is every to open all corresponding best transmission distance of a switch, pass through four alternatings switched
Closure, can be greatly improved the efficiency of transmission of system in this way within the scope of certain distance.On tunable repeating coil also
The coil control device of other controllable coil turns can be set.The quantity of coil control device can be according to tunable junction line
The total number of turns of circle determines that the coil turn that each coil control device can control can also determine according to actual needs.
Also, the coil turn of different coil control device controls only needs to have difference without meeting multiple proportion.
As shown in figure 4, only opening one of switch in 4 switches when to be system transmission range be 5cm-22cm, being
Unite efficiency of transmission with distance variation.When only opening first switch 701, system is in state 1, it can be seen that the transmission of system
Efficiency is with the trend apart from presentation first increases and then decreases and the efficiency of transmission of system reaches maximum value 71% at 17cm；Only beat
When opening second switch 702, system is in state 2, it can be seen that first increases and then decreases is presented with distance in the efficiency of transmission of system
Trend and the efficiency of transmission of system reaches maximum value 76% at 14cm；When only opening third switch 703, system is in state
3, it can be seen that the efficiency of transmission of system with distance present first increases and then decreases trend and 10cm at system transmission effect
Rate reaches maximum value 83%；Only open four switches 704 when, system is in state 4, it can be seen that the efficiency of transmission of system with
The trend of first increases and then decreases is presented for distance and the efficiency of transmission of system reaches maximum value 86%, and state 4 and shape at 7cm
The efficiency of transmission at 9cm of state 3 is all 81%, and state 3 and state 2 efficiency of transmission at 13cm are all 74%, state 2 and state 1
Efficiency of transmission at 16cm is all 69%.
As shown in figure 5, being the efficiency of transmission of tunable three-winding apparatus system of the invention with the curve graph of distance change.
According to Fig. 4 it can be seen that system is independently operated under four states, when system deviate its best transmission apart from when, system transmission effect
The shortcomings that rate sharply declines with distance change appearance.Therefore, it is necessary to by system efficiency of transmission of the control under four kinds of states with
It works in transmission range curved vertex region.Specifically, when system transmission range be less than 9cm when, closure the 4th switch 704 make be
Work unite in state 4；When system transmission range is between 9cm and 13cm, closure third switch 703 makes system work in shape
State 3；When system transmission range is between 13cm and 16cm, closure second switch 702 makes system work in state 2；When being
System transmission range, which is greater than 16cm closure first switch 701, makes system work in state 1.
By Fig. 4 and Fig. 5 it can be found that tunable three-winding device of the invention is within the scope of selected areas, the biography of system
Defeated efficiency obviously has increased significantly than the existing system efficiency of transmission only to work under some state, of the invention
Tunable three-winding apparatus system has also obtained inhibiting to a certain degree to the susceptibility of system transmission range, it can be seen that this
Invention can still keep higher efficiency of transmission in the wireless power transmission of long range, and comparing traditional three-winding device has
Significantly optimize.And it is noted that this simulation result is the feelings of the coil turn based on the present embodiment setting
The data obtained under condition, when change the tunable coil of corresponding states the number of turns when, system can optimization range obviously also can be therewith
Change.But same reason can always obtain an optimal coil state.Regardless of how to change the number of coil control device
Amount and its number of turns of corresponding control, total energy realize under some actual transmissions distance, the apparatus according to the invention, from obtained
The optimum state of the corresponding distance can be selected to be transmitted in optimization range, realize this purpose of optimum transport efficiency to reach.
Claims (10)
1. a kind of tunable three-winding device for long range wireless power transmission, which is characterized in that including sequentially connected
D.C. regulated power supply (1), inverter circuit (2), transmitting coil (4), tunable repeating coil (5) and receiving coil (6), it is described inverse
Power transformation road (2) is connect with the driving circuit (3) for generating driving signal；The tunable repeating coil (5) is connected with control coil
The coil control device of the number of turns is connected；Driving signal is transmitted to inverter circuit (2) by the driving circuit (3), the inversion electricity
Road (2) is under the action of driving signal by the DC inverter of the D.C. regulated power supply (1) input at alternating current, exchange fax
It transports to the transmitting coil (4), the tunable repeating coil (5) will by the coil turn that coil control device adjusts conducting
Energy is transferred to receiving coil (6) by transmitting coil (4).
2. the tunable three-winding device according to claim 1 for long range wireless power transmission, which is characterized in that
The coil control device is switch.
3. the tunable three-winding device according to claim 2 for long range wireless power transmission, which is characterized in that
At least two switches, the coil of described at least two switch controls difference the number of turns are connected on the tunable repeating coil (5)；
The coil turn of each switch control forms different resonant capacitances.
4. the tunable three-winding device according to claim 3 for long range wireless power transmission, which is characterized in that
First switch (701), second switch (702), third switch (703), the are connected separately on the tunable repeating coil (5)
Four switches (704).
5. the tunable three-winding device according to claim 1 for long range wireless power transmission, which is characterized in that
The tunable repeating coil (5) is helical structure.
6. the tunable three-winding device according to claim 1 for long range wireless power transmission, which is characterized in that
The transmitting coil (4) is placed in the inside of tunable repeating coil (5).
7. the tunable three-winding device according to claim 1 for long range wireless power transmission, which is characterized in that
The transmitting coil (4) is helical structure.
8. the tunable three-winding device according to claim 1 for long range wireless power transmission, which is characterized in that
Base chip when the driving circuit (3) is.
9. the tunable three-winding device according to claim 1 for long range wireless power transmission, which is characterized in that
The inverter circuit (2) realizes inversion using 4 IRF450 MOSFET alternate conductions.
10. the tunable three-winding device according to claim 1 for long range wireless power transmission, feature exist
In the receiving coil (6) is that the coiling of copper air core coil forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831483.2A CN110518710B (en) | 2019-09-04 | 2019-09-04 | Tunable three-coil device for long-distance wireless power transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831483.2A CN110518710B (en) | 2019-09-04 | 2019-09-04 | Tunable three-coil device for long-distance wireless power transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110518710A true CN110518710A (en) | 2019-11-29 |
| CN110518710B CN110518710B (en) | 2022-10-14 |
Family
ID=68629596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910831483.2A Active CN110518710B (en) | 2019-09-04 | 2019-09-04 | Tunable three-coil device for long-distance wireless power transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110518710B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355310A (en) * | 2020-04-15 | 2020-06-30 | 江苏方天电力技术有限公司 | Cascading wireless charging system of power inspection robot and control method |
| CN111682652A (en) * | 2020-05-29 | 2020-09-18 | 中国石油天然气集团有限公司 | System and method for dynamically adjusting coupling coefficient of non-contact transmission magnetic mechanism |
| CN112874330A (en) * | 2021-01-26 | 2021-06-01 | 华北电力大学 | Magnetic coupler system and relay coil switching method |
| CN113328536A (en) * | 2021-06-29 | 2021-08-31 | 哈尔滨工业大学 | Multi-relay wireless energy and data cooperative transmission system |
| CN114094718A (en) * | 2021-11-18 | 2022-02-25 | 上海卡珀林智能科技有限公司 | Time-sharing multiplexing wireless energy transmission system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219807A (en) * | 2013-04-23 | 2013-07-24 | 重庆交通大学 | Self-adapting wireless electric energy transmission device |
| CN106981933A (en) * | 2017-04-25 | 2017-07-25 | 东北大学 | Radio energy transmission system and based on apart from adaptive driving coil collocation method |
-
2019
- 2019-09-04 CN CN201910831483.2A patent/CN110518710B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219807A (en) * | 2013-04-23 | 2013-07-24 | 重庆交通大学 | Self-adapting wireless electric energy transmission device |
| CN106981933A (en) * | 2017-04-25 | 2017-07-25 | 东北大学 | Radio energy transmission system and based on apart from adaptive driving coil collocation method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355310A (en) * | 2020-04-15 | 2020-06-30 | 江苏方天电力技术有限公司 | Cascading wireless charging system of power inspection robot and control method |
| CN111682652A (en) * | 2020-05-29 | 2020-09-18 | 中国石油天然气集团有限公司 | System and method for dynamically adjusting coupling coefficient of non-contact transmission magnetic mechanism |
| CN111682652B (en) * | 2020-05-29 | 2021-09-17 | 中国石油天然气集团有限公司 | System and method for dynamically adjusting coupling coefficient of non-contact transmission magnetic mechanism |
| WO2021238901A1 (en) * | 2020-05-29 | 2021-12-02 | 中国石油天然气集团有限公司 | System and method for dynamically adjusting coupling coefficient of non-contact transmission magnetic mechanism |
| CN112874330A (en) * | 2021-01-26 | 2021-06-01 | 华北电力大学 | Magnetic coupler system and relay coil switching method |
| CN113328536A (en) * | 2021-06-29 | 2021-08-31 | 哈尔滨工业大学 | Multi-relay wireless energy and data cooperative transmission system |
| CN114094718A (en) * | 2021-11-18 | 2022-02-25 | 上海卡珀林智能科技有限公司 | Time-sharing multiplexing wireless energy transmission system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110518710B (en) | 2022-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110518710A (en) | Tunable three-winding device for long range wireless power transmission | |
| CN106062906B (en) | Induced power transmitting device and its control method | |
| CN103477537B (en) | Apparatus and method for high efficiency variable power transmission | |
| CN104158305A (en) | Energy and information synchronous transmission system based on self-adaptive magnetic coupling resonance matching | |
| CN103124088B (en) | Wireless charging system capable of transmitting data and data transmission method | |
| CN107425611A (en) | A kind of Contactless power transmission device magnetic coupling Optimization Design | |
| CN203660624U (en) | Wireless charging device with multiple transmitting terminals and single receiving terminal | |
| CN104993617A (en) | Magnetic-resonance wireless power transmission system and impedance matching method thereof | |
| CN205141846U (en) | Can realize automatic impedance match's magnetism resonance wireless power transmission system | |
| JP2013162533A (en) | Contactless power-transmission system | |
| Ettorre et al. | A transponder-based, nonradiative wireless power transfer | |
| CN106564395A (en) | Wireless charging power coil, wireless charging system and wireless charging control method | |
| CN107394901B (en) | Inhibit the wireless power transmission coil design approaches of frequency splitting | |
| CN102882290A (en) | Novel electromagnetic coupling resonant wireless power transmission system | |
| CN204992793U (en) | A device for wireless power transmission | |
| CN107404155A (en) | A kind of wireless energy transform device | |
| CN110277234A (en) | A kind of receiving coil for keeping output power constant under different transmission ranges | |
| CN107508388B (en) | Design method of magnetic coupling resonance high-efficiency electric energy transmission coil | |
| CN1212530A (en) | Impedence regulator system and method | |
| Miyamoto et al. | Wireless power transfer system with a simple receiver coil | |
| Eteng et al. | Wireless nonradiative energy transfer: Antenna performance enhancement techniques | |
| CN206524686U (en) | wireless charging power coil and wireless charging system | |
| CN107565707B (en) | Optimal switching design method for magnetic coupling electric energy transmission coil | |
| CN107565708B (en) | Optimal switching design method for parallel coils of magnetic coupling power transmission system | |
| CN103337917A (en) | Adjustable inductor as well as wireless charging system applying adjustable inductor and control method of wireless charging system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |