CN106549470A - One-to-many wireless charging system - Google Patents
One-to-many wireless charging system Download PDFInfo
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- CN106549470A CN106549470A CN201611200876.6A CN201611200876A CN106549470A CN 106549470 A CN106549470 A CN 106549470A CN 201611200876 A CN201611200876 A CN 201611200876A CN 106549470 A CN106549470 A CN 106549470A
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- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 6
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- 238000000034 method Methods 0.000 claims description 11
- 238000009826 distribution Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
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- 238000010586 diagram Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
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- H02J7/025—
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- H02J5/005—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention discloses a kind of one-to-many wireless charging system.System includes：Transmitting terminal, transmitting coil, at least one receiving coil and at least one receiving terminal；The transmitting terminal, for electric energy is obtained from electrical network, and electric energy is transmitted to the transmitting coil；The transmitting coil, for close coupling field is formed between receiving coil, electric energy is transmitted to the receiving coil；The receiving terminal, for obtaining electric energy from the receiving coil, and electric energy is transmitted to charging equipment；Wherein, the transmitting coil is identical with the resonant frequency of at least one receiving coil, and at least one receiving coil and at least one receiving terminal are corresponded.The embodiment of the present invention provides energy for multiple loads by way of one-to-many, improves charge efficiency, parking spot is required relatively low.
Description
Technical field
The present embodiments relate to radio transmission technical field, and in particular to a kind of one-to-many wireless charging system.
Background technology
With growing interest of the countries in the world to environmental problem, the electric automobile neck of energy-saving and emission-reduction and Green Travel is represent
Domain is developed rapidly, and current electric automobile time to recharge and convenient degree cannot be to limit electricity compared with conventional fuel oil automobile
One big problem of electrical automobile development.Charging modes at this stage are wired chargings, and wire is exposed in charging for this method, rubs
Wipe, damaged or stumbling potential safety hazard of can all cause, be not suitable for being applied to unserviced occasion being charged, when wasting
Between.
During the embodiment of the present invention is realized, inventor has found that the scheme of current wireless charging mostly is one-to-one energy
Transmission.When a large amount of cars charge simultaneously, not only circuit is various, and transmitting coil and the one-to-one transmission of receiving coil, also allows which
There is very big constraint to the stop position of electric automobile, limit the development of magnetic resonance type wireless charging application.
The content of the invention
One purpose of the embodiment of the present invention is to solve prior art to cause charge efficiency using the scheme of one-to-one charging
It is low, there is very high requirement to the stop position of charging load.
The embodiment of the present invention proposes a kind of one-to-many wireless charging system, including：Transmitting terminal, transmitting coil, at least one
Individual receiving coil and at least one receiving terminal；
The transmitting terminal, for electric energy is obtained from electrical network, and electric energy is transmitted to the transmitting coil；
The transmitting coil, for close coupling field is formed between receiving coil, electric energy is transmitted to the reception line
Circle；
The receiving terminal, for obtaining electric energy from the receiving coil, and electric energy is transmitted to charging equipment；
Wherein, the transmitting coil is identical with the resonant frequency of at least one receiving coil, and described at least one connects
Take-up circle and at least one receiving terminal are corresponded.
Optionally, the transmitting terminal includes：Three phase rectifier filter circuit, single-phase high frequency inverter circuit and the source being sequentially connected
Side compensation circuit；
The three-phase arranges filter circuit, for the three-phase alternating current obtained from electrical network civil power is converted to direct current
Electricity；
The single-phase high frequency inverter circuit, for unidirectional current is converted to single-phase high frequency alternating current；
Source side compensation circuit, for compensating process to single-phase high frequency alternating current.
Optionally, the single-phase high frequency inverter circuit includes：First switch unit, second switch unit and coil；
The first switch unit connects first input end, primary nodal point and secondary nodal point respectively；
The second switch unit connects the second input, the primary nodal point and the secondary nodal point respectively；
The coil connects the primary nodal point and the secondary nodal point respectively.
Optionally, the first switch unit includes：First mos is managed and the 2nd mos is managed；
The grid of the first mos pipes connects the first input end, a connection described first in source electrode and drain electrode
Node, another connection the 2nd mos pipes；
The grid of the 2nd mos pipes connects the first input end, a connection described second in source electrode and drain electrode
Node, another connection the first mos pipes.
Optionally, the second switch unit includes：3rd mos is managed and the 4th mos is managed；
The grid of the 3rd mos pipes connects second input, a connection described first in source electrode and drain electrode
Node, another connection the 4th mos pipes；
The grid of the 4th mos pipes connects second input, a connection described second in source electrode and drain electrode
Node, another connection the 3rd mos pipes.
Optionally, the single-phase high frequency inverter circuit also includes：Electric capacity and resistance；
The first end of the electric capacity connects the coil, and the second end connects the first end of the resistance, and the of the resistance
Two ends connect the secondary nodal point.
Optionally, the receiving terminal includes：The secondary compensation circuit being sequentially connected and high-frequency rectification circuit；
The secondary compensation circuit, compensates process for the high-frequency ac to obtaining from the receiving coil；
The high-frequency rectification circuit, for high-frequency alternating current is converted to unidirectional current.
Optionally, the receiving terminal also includes：Charging inlet, the charging inlet are wirelessly connected with the charging equipment
Connect.
Optionally, it is when receiving coil is multiple, in parallel between each receiving coil, and coupled in the way of magnetic resonance respectively
To the transmitting coil.
Optionally, each receiving terminal is in periodicity or distributed distribution in preset charged region.
As shown from the above technical solution, a kind of one-to-many wireless charging system that the embodiment of the present invention is proposed, by sending out
Ray circle is consistent with the resonant frequency of receiving coil, realizes the technical side of the corresponding multiple receiving coils of a transmitting coil
Case, and then the charging purpose of one-to-many can be reached, compared with man-to-man charging scheme in prior art, with charge efficiency
High, charging load stop position requires low advantage.
Description of the drawings
The features and advantages of the present invention can be more clearly understood from by reference to accompanying drawing, accompanying drawing is schematic and should not manage
Solution is to carry out any restriction to the present invention, in the accompanying drawings：
Fig. 1 shows a kind of application scenario diagram of one-to-many wireless charging system that one embodiment of the invention is provided；
Fig. 2 shows a kind of structural representation of one-to-many wireless charging system that one embodiment of the invention is provided；
Fig. 3 shows a kind of principle schematic of one-to-many wireless charging system that one embodiment of the invention is provided；
Fig. 4 shows a kind of single-phase high frequency inverter circuit of one-to-many wireless charging system that one embodiment of the invention is provided
Schematic diagram；
Fig. 5 shows a kind of magnetic resonance coupling process of one-to-many wireless charging system that one embodiment of the invention is provided
Principle schematic；
Fig. 6 shows a kind of magnetic resonance configurations equivalent electric of one-to-many wireless charging system that one embodiment of the invention is provided
Road schematic diagram.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than the embodiment of whole.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment obtained on the premise of creative work is not made by member, belongs to the scope of protection of the invention.
Embodiment one
Fig. 1 shows a kind of application scenario diagram of one-to-many wireless charging system that one embodiment of the invention is provided, referring to
Fig. 1, the application scenarios include：Parking stall 110 and charging equipment 120, charging equipment 120 are exemplified as electric automobile 120,
Wherein：
By the box indicating in Fig. 1, each parking stall 110 corresponds to a wireless charging area, when electronic vapour on parking stall 110
When car 120 is parked in parking stall 120, start wireless charging function, wireless charging system starts to charge electric automobile 120.
By taking Fig. 1 as an example, there are five electric automobiles 120 to stop, and carry out wireless charging, in this process,
Ground does not have any circuit and the physical connection impeded, and human pilot also nearby need not be kept an eye on, electric automobile 120 now
The process indifference of charging process and common electric automobile stop, as long as electric automobile 120 is mounted with the reception of wireless charging
End, you can arbitrarily rested in wireless charging area with normal parking mode, be chargeable through authentication.
Embodiment two
Fig. 2 shows a kind of structural representation of one-to-many wireless charging system that one embodiment of the invention is provided, referring to
Fig. 2, the system include：Transmitting terminal 210, transmitting coil 220, at least one receiving coil 230 and at least one receiving terminal 240；
The transmitting terminal 210, for electric energy is obtained from electrical network, for example：Civil power, and electric energy is transmitted to the emission lines
Circle 220；
The transmitting coil 220, for close coupling field is formed between receiving coil 230, electric energy is transmitted to described
Receiving coil 230；
The receiving terminal 240, for obtaining electric energy from the receiving coil 230, and electric energy is transmitted to charging equipment
250；
Wherein, the transmitting coil 220 is identical with the resonant frequency of at least one receiving coil 230, it is described at least
One receiving coil 230 and at least one receiving terminal 240 are corresponded.
Understandable to be, receiving terminal 240 can depend on the circumstances for installation site, for example：In preset charged region it is in
Periodically, distributed distribution or 360 ° of distributions etc..
It is illustrated referring to Fig. 2：
In Fig. 2,230 place row of receiving coil is receiving coil, and 240 place row of receiving terminal is receiving terminal, to be charged
250 place row of equipment is charging equipment.Wherein, by 5, receiving terminal 240 also has 5 to receiving coil 230, and each receives line
230 one receiving terminal 240 of correspondence of circle.As the resonant frequency between receiving coil 230 and transmitting coil 220 is consistent, because
This, it is possible to achieve effect of the transmitting coil 220 to 5 transmission electric energy of receiving coil 230.
It can be seen that, the present embodiment is consistent by the resonant frequency by transmitting coil with receiving coil, realizes a transmitting
The technical scheme of the multiple receiving coils of coil correspondence, and then the charging purpose of one-to-many can be reached, it is one-to-one with prior art
Charging scheme compare, have the advantages that charge efficiency is high, charging load stop position require it is low.
Embodiment three
Fig. 3 shows a kind of principle schematic of one-to-many wireless charging system that one embodiment of the invention is provided, below
The operation principle of the system is described in detail referring to Fig. 3：
First, the structure of the system is illustrated：
Transmitting terminal includes：Three phase rectifier filter circuit, single-phase high frequency inverter circuit and the source side compensation circuit being sequentially connected；
The three-phase arranges filter circuit, for the three-phase alternating current obtained from electrical network civil power is converted to direct current
Electricity；
The single-phase high frequency inverter circuit, for unidirectional current is converted to single-phase high frequency alternating current；
Source side compensation circuit, for compensating process to single-phase high frequency alternating current.
Receiving terminal includes：The secondary compensation circuit being sequentially connected and high-frequency rectification circuit；
The secondary compensation circuit, compensates process for the high-frequency ac to obtaining from the receiving coil；
The high-frequency rectification circuit, for high-frequency alternating current is converted to unidirectional current.
Based on said structure, during whole wireless power transmission, three-phase alternating current civil power is obtained from urban distribution network, is passed through
Three-phase alternating current civil power is converted into DC voltage by three phase rectifier filter circuit, then through the single-phase high frequency of single-phase high frequency inverter circuit
Inversion is processed, and DC voltage is converted into the alternating current of single-phase high frequency, the frequency for then keeping this certain through source side compensation circuit
The stability of the alternating current of rate and it is coupled on transmitting coil, receiving coil is consistent with the resonant frequency of transmitting coil,
Therefore transmitting coil can connect multiple receiving coils, load need of the receiving coil according to itself by way of magnetic resonance simultaneously
Ask and energy is obtained from transmitting coil, in parallel or separate between receiving coil, receiving coil is connected by way of coupling
It is connected in the secondary compensation circuit of receiving terminal, the stability of ac frequency, amplitude and phase place is kept by secondary compensation circuit,
Then high-frequency alternating current is converted into into the DC voltage that can be charged to load through high-frequency rectification circuit, load is exemplified as electronic vapour
Car, then receiving terminal be wirelessly connected with the charging equipment by charging inlet, complete charging process.
Wherein, referring to Fig. 4, single-phase high frequency inverter circuit includes：First switch unit 410, second switch unit 420 and line
Circle L1；
The first switch unit 410 connects first input end D1, primary nodal point N1 and secondary nodal point N2 respectively；
The second switch unit 420 connects the second input D2, the primary nodal point N1 and the secondary nodal point respectively
N2；
The coil L1 connects the primary nodal point N1 and secondary nodal point N2 respectively.
Wherein, first switch unit 410 includes：First mos pipes M1 and the 2nd mos pipe M2；
The grid of the first mos pipe M1 connects the first input end D1, and a connection in source electrode and drain electrode is described
Primary nodal point N1, another connection the 2nd mos pipe M2；
The grid of the 2nd mos pipe M2 connects the first input end D1, and a connection in source electrode and drain electrode is described
Secondary nodal point N2, another connection the first mos pipe M1.
Second switch unit 420 includes：3rd mos pipes M3 and the 4th mos pipe M4；
The grid of the 3rd mos pipe M3 connects the second input D2, and a connection in source electrode and drain electrode is described
Primary nodal point N1, another connection the 4th mos pipe M4；
The grid of the 4th mos pipe M4 connects the second input D2, and a connection in source electrode and drain electrode is described
Secondary nodal point N2, another connection the 3rd mos pipe M3.
Single-phase high frequency inverter circuit also includes：Electric capacity C1 and resistance RL；
The first end of the electric capacity C1 connects the coil L1, and the second end connects the resistance RLFirst end, the electricity
Resistance RLThe second end connect the secondary nodal point N2.
Example IV
Fig. 5 shows a kind of magnetic resonance coupling process of one-to-many wireless charging system that one embodiment of the invention is provided
Principle schematic, referring to Fig. 5：
Transmitting terminal source coil S is coupled with source side compensation circuit inductance A, and receiving terminal secondary coil D1 is electric with secondary compensation circuit B1
Sense coupling, receiving terminal secondary coil D2 and secondary compensation circuit B2 inductive, transmitting terminal source coil S and receiving terminal secondary coil D1,
D2 depends on the distributed inductance and distribution capacity of inside to reach resonance, and energy is coupled to transmitting by source side compensation circuit inductance A
End source coil S, and transmitting terminal source coil S has identical frequency of oscillation with receiving terminal secondary coil D1, D2, under the influence of a magnetic field
Formed " resonance ", the object of resonance can free transmission energy, the present embodiment is by taking two receiving terminals as an example, and more receiving terminal
In the same manner, transmitting terminal can be powered for how many roads receiving terminal simultaneously, depending on power P out of the load output per receiving terminal all the way
Sum.
Fig. 6 shows a kind of magnetic resonance configurations equivalent electric of one-to-many wireless charging system that one embodiment of the invention is provided
Road schematic diagram, joins Fig. 6：
According to Kirchhoff's law, input impedance Rin is obtained：
Input power Pi：
Output Po：
Efficiency eta：
Wherein, PiFor input power；PoFor output；VsFor input supply voltage virtual value；RsFor input series electrical
Resistance；RINFor input impedance；ω0For resonant frequency；Ms1For transmitting terminal source coil mutual inductance；M12For resonance coil mutual inductance；M2LTo receive
End loading coil mutual inductance；R1For transmitting terminal resonant tank equivalent series resistance；R2For receiving terminal resonant tank equivalent series resistance；
RLFor load resistance.
It should be noted that above-mentioned embodiment the present invention will be described rather than limits the invention, and this
Art personnel can design replacement embodiment without departing from the scope of the appended claims.In claim
In, any reference markss between bracket should not be configured to limitations on claims.Word "comprising" is not excluded for depositing
In element not listed in the claims or step.Word "a" or "an" before element do not exclude the presence of it is multiple this
The element of sample.The present invention can come by means of the hardware for including some different elements and by means of properly programmed computer
Realize.If in the unit claim for listing equipment for drying, several in these devices can be by same hardware
Embodying.The use of word first, second, and third does not indicate that any order.These words can be construed to
Title.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can be without departing from this
Various modifications and variations are made in the case of bright spirit and scope, such modification and modification are each fallen within by claims
Within limited range.
Claims (10)
1. a kind of one-to-many wireless charging system, it is characterised in that include：Transmitting terminal, transmitting coil, at least one receiving coil
With at least one receiving terminal；
The transmitting terminal, for electric energy is obtained from electrical network, and electric energy is transmitted to the transmitting coil；
The transmitting coil, for close coupling field is formed between receiving coil, electric energy is transmitted to the receiving coil；
The receiving terminal, for obtaining electric energy from the receiving coil, and electric energy is transmitted to charging equipment；
Wherein, the transmitting coil is identical with the resonant frequency of at least one receiving coil, and described at least one receives line
Circle and at least one receiving terminal are corresponded.
2. system according to claim 1, it is characterised in that the transmitting terminal includes：The three phase rectifier filter being sequentially connected
Wave circuit, single-phase high frequency inverter circuit and source side compensation circuit；
The three-phase arranges filter circuit, for the three-phase alternating current obtained from electrical network civil power is converted to unidirectional current；
The single-phase high frequency inverter circuit, for unidirectional current is converted to single-phase high frequency alternating current；
Source side compensation circuit, for compensating process to single-phase high frequency alternating current.
3. system according to claim 1, it is characterised in that the single-phase high frequency inverter circuit includes：First switch list
Unit, second switch unit and coil；
The first switch unit connects first input end, primary nodal point and secondary nodal point respectively；
The second switch unit connects the second input, the primary nodal point and the secondary nodal point respectively；
The coil connects the primary nodal point and the secondary nodal point respectively.
4. system according to claim 3, it is characterised in that the first switch unit includes：First mos is managed and second
Mos is managed；
The grid of the first mos pipes connects the first input end, the connection primary nodal point in source electrode and drain electrode,
Another connection the 2nd mos pipes；
The grid of the 2nd mos pipes connects the first input end, the connection secondary nodal point in source electrode and drain electrode,
Another connection the first mos pipes.
5. system according to claim 3, it is characterised in that the second switch unit includes：3rd mos is managed and the 4th
Mos is managed；
The grid of the 3rd mos pipes connects second input, the connection primary nodal point in source electrode and drain electrode,
Another connection the 4th mos pipes；
The grid of the 4th mos pipes connects second input, the connection secondary nodal point in source electrode and drain electrode,
Another connection the 3rd mos pipes.
6. system according to claim 3, it is characterised in that the single-phase high frequency inverter circuit also includes：Electric capacity and electricity
Resistance；
The first end of the electric capacity connects the coil, and the second end connects the first end of the resistance, the second end of the resistance
Connect the secondary nodal point.
7. system according to claim 1, it is characterised in that the receiving terminal includes：The secondary compensation electricity being sequentially connected
Road and high-frequency rectification circuit；
The secondary compensation circuit, compensates process for the high-frequency ac to obtaining from the receiving coil；
The high-frequency rectification circuit, for high-frequency alternating current is converted to unidirectional current.
8. system according to claim 1, it is characterised in that the receiving terminal also includes：Charging inlet, the charging
Mouth is wirelessly connected with the charging equipment.
9. system according to claim 1, it is characterised in that receiving coil for it is multiple when, between each receiving coil simultaneously
Connection, and the transmitting coil is coupled respectively in the way of magnetic resonance.
10. system according to claim 9, it is characterised in that each receiving terminal in the preset charged region in periodically or
The distributed distribution of person.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200876.6A CN106549470A (en) | 2016-12-22 | 2016-12-22 | One-to-many wireless charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200876.6A CN106549470A (en) | 2016-12-22 | 2016-12-22 | One-to-many wireless charging system |
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| CN106549470A true CN106549470A (en) | 2017-03-29 |
Family
ID=58396916
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611200876.6A Pending CN106549470A (en) | 2016-12-22 | 2016-12-22 | One-to-many wireless charging system |
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Cited By (3)
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| CN107976003A (en) * | 2017-11-06 | 2018-05-01 | 青岛海尔股份有限公司 | Refrigerating device |
| CN108790920A (en) * | 2018-07-13 | 2018-11-13 | 北京动力京工科技有限公司 | A kind of mobile vehicle wireless charging device |
| CN110014893A (en) * | 2017-09-29 | 2019-07-16 | 上海寰晟新能源科技有限公司 | Based on electric car multichannel magnetic coupling type wireless charging system |
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| PB01 | Publication | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Wenren Inventor after: Wang Futing Inventor before: Zhao Yiyang Inventor before: Wang Futing |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170314 Address after: 100176 Beijing city Daxing District by sea international No. 2 floor 1 Zhenguan Applicant after: Beijing origin Technology Development Co., Ltd. Address before: 100076 Beijing, Fengtai District, South Road, No. 1, Applicant before: Zhao Yiyang |
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Application publication date: 20170329 |