CN109760548A - A kind of wireless system and method - Google Patents
A kind of wireless system and method Download PDFInfo
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- CN109760548A CN109760548A CN201910243296.2A CN201910243296A CN109760548A CN 109760548 A CN109760548 A CN 109760548A CN 201910243296 A CN201910243296 A CN 201910243296A CN 109760548 A CN109760548 A CN 109760548A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
This application discloses a kind of wireless charging systems, including vehicle-mounted power receiving end, ground power transmitting terminal, cab signal transmitting terminal and ground signal receiving end, in which: cab signal transmitting terminal generates alternating current magnetic field, to send the electromagnetic signal of first frequency；When ground, signal receiving end senses electromagnetic signal, controls ground power transmitting terminal with second frequency to vehicle-mounted power receiving end wireless transmitted power；Wherein the ratio of first frequency and second frequency is predeterminated frequency ratio.Using the electromagnetic signal of first frequency as communication signal in the present invention, when ground, signal receiving end senses that electromagnetic signal then opens ground power transmitting terminal and carries out power transmission；Electromagnetic signal of the invention is actually the electromagnetic coupling in the alternating current magnetic field of first frequency between cab signal transmitting terminal and ground signal receiving end, cooperate circuit simple, only signal receiving end transmitting cab signal transmitting terminal is in or be not in two states to the ground, it has a single function and efficient stable, by external interference a possibility that is minimum.
Description
Technical field
The present invention relates to wireless power transmission technical field, in particular to a kind of wireless system and method.
Background technique
As technology develops, more and more attention has been paid to wherein the energy of electric car supplements electric car, such as wired charging
Stake charging, wireless charging become the emphasis of technical research.
In general, often using the side wireless communication of WiFi network and particular frequency bands in the charging process of wireless charging system
Formula, such methods there are problems that communication efficiency it is poor, vulnerable to external interference, and the time for establishing communication channel is longer, especially
It is not suitable for dynamically charging in the driving status that vehicle advances or moves backward.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that current those skilled in the art need to solve
Problem.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of wireless system and method, to improve wireless charging system
With the communication speed and quality of Rechargeable vehicle, guarantee the fast and stable of charging process.Its concrete scheme is as follows:
A kind of wireless charging system, including vehicle-mounted power receiving end, ground power transmitting terminal, cab signal transmitting terminal and ground
Face signal receiving end, in which:
The cab signal transmitting terminal generates alternating current magnetic field, to send the electromagnetic signal of first frequency；
When the ground signal receiving end senses the electromagnetic signal, the ground power transmitting terminal is controlled with the second frequency
Rate is to the vehicle-mounted power receiving end wireless transmitted power；
Wherein the ratio of the first frequency and the second frequency is predeterminated frequency ratio.
Preferably, wireless charging system includes two and is separated by the ground that pre-determined distance is distributed in vehicle traveling direction
Signal receiving end is separated by pre-determined distance and is distributed in vehicle traveling direction, so that two ground signal receiving ends cannot be same
When sense the electromagnetic signal.
Preferably, the wireless charging system includes two vehicle-mounted power receptions for being located at headstock and the tailstock
End.
Preferably, the wireless charging system further include:
It is separately connected two AC-DC converting units of two vehicle-mounted power receiving ends；
The controller of two AC-DC converting unit working conditions is controlled respectively；
Receive the on-vehicle battery of the output power of two AC-DC converting units.
Preferably, the cab signal transmitting terminal is located in the middle part of car body；
The ground power transmitting terminal is located at the midpoint of two ground signal receiving ends.
Preferably, the predeterminated frequency ratio is in the range of [7,15].
Correspondingly, the invention discloses a kind of wireless charging methods, comprising:
Alternating current magnetic field is generated using cab signal transmitting terminal, to send the electromagnetic signal of first frequency；
When ground, signal receiving end senses the electromagnetic signal, control the ground power transmitting terminal with second frequency to
Vehicle-mounted power receiving end wireless transmitted power；
Wherein the ratio of the first frequency and the second frequency is predeterminated frequency ratio.
Preferably, two ground signal receiving ends, are separated by pre-determined distance and are distributed in vehicle traveling direction, so that two
A ground signal receiving end cannot sense the electromagnetic signal simultaneously；
Then when the ground signal receiving end senses the electromagnetic signal, the ground power transmitting terminal is controlled with second
Frequency is specifically included to the process of the vehicle-mounted power receiving end wireless transmitted power:
The electromagnetic signal is sensed when any in two ground signal receiving ends for the first time, controls the ground function
Rate transmitting terminal is with the second frequency to the vehicle-mounted power receiving end wireless transmitted power；
The electromagnetic signal is sensed when any in second of two ground signal receiving end, stops the ground function
Rate transmitting terminal is to the vehicle-mounted power receiving end wireless transmitted power.
Preferably, two vehicle-mounted power receiving ends are located at headstock and the tailstock；
The control ground power transmitting terminal is wirelessly transferred with the second frequency to the vehicle-mounted power receiving end
The process of power, specifically further include:
Two vehicle-mounted power receiving ends are controlled respectively, and electric energy is continuously conveyed to on-vehicle battery.
Preferably, the predeterminated frequency ratio is in the range of [7,15].
The invention discloses a kind of wireless charging systems, including vehicle-mounted power receiving end, ground power transmitting terminal, vehicle-mounted letter
Number transmitting terminal and ground signal receiving end, in which: the cab signal transmitting terminal generates alternating current magnetic field, to send first frequency
Electromagnetic signal；When the ground signal receiving end senses the electromagnetic signal, the ground power transmitting terminal is controlled with second
Frequency is to the vehicle-mounted power receiving end wireless transmitted power；Wherein the ratio of the first frequency and the second frequency is default
Frequency ratio.
As it can be seen that when ground, signal receiving end is sensed using the electromagnetic signal of first frequency as communication signal in the present invention
Electromagnetic signal then opens ground power transmitting terminal and carries out power transmission；Different from the complicated circuit and right of prior art wireless communication
The compatibility of various Content of Communication, electromagnetic signal of the invention are actually cab signal transmitting in the alternating current magnetic field of first frequency
Electromagnetic coupling between end and ground signal receiving end, cooperation circuit is simple, and only signal receiving end transmits cab signal to the ground
Transmitting terminal is in or be not in two states, has a single function and efficient stable, and by external interference a possibility that is minimum.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structure distribution figure of wireless charging system in the embodiment of the present invention；
Fig. 2 is a kind of structure distribution figure of specific wireless charging system in the embodiment of the present invention；
Fig. 3 is a kind of step flow chart of wireless charging method in the embodiment of the present invention；
Fig. 4 is a kind of step flow chart of specific wireless charging method in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the prior art, the means of communication for controlling charging system start and stop is usually the conventional wireless communications such as WiFi, this kind of logical
Conveniently section can transmit a variety of different information, various software systems are compatible with, but in wireless charging field, due in charging process
Information flow is single, and the strong feature of general communication means compatibility cannot give full play to, instead due to general communication means timeliness
Difference is easy by external environmental interference, and the application effect in wireless charging is undesirable.
And in the present embodiment, be equivalent to traditional communication information is the electromagnetic signal that electromagnetic coupling generates, appropriate frequency
Electromagnetic signal can be transmitted to fast and stable between cab signal transmitting terminal 3 and ground signal receiving end 4, and operating circuit is simple
It easily realizes, and without the defect of general communication means.
It is shown in Figure 1 the embodiment of the invention discloses a kind of wireless charging system, including vehicle-mounted power receiving end 1,
Face power emission end 2, cab signal transmitting terminal 3 and ground signal receiving end 4, in which:
The cab signal transmitting terminal 3 generates alternating current magnetic field, to send the electromagnetic signal of first frequency；
When the ground signal receiving end 4 senses the electromagnetic signal, the ground power transmitting terminal 2 is controlled with second
Frequency is to vehicle-mounted 1 wireless transmitted power of power receiving end；
Wherein the ratio of the first frequency and the second frequency is predeterminated frequency ratio.
Wherein, cab signal transmitting terminal 3 and ground signal receiving end 4 generally use LCL structure, and vehicle power supply utilizes DC-
AC circuit conversion obtains the alternating current of first frequency and is transferred to cab signal transmitting terminal 3, and cab signal transmitting terminal 3 generates first
The alternating current magnetic field of frequency, to send the electromagnetic signal of first frequency；If cab signal transmitting terminal 3 and ground signal receiving end 4
Distance is appropriate, it will be able to couple in the alternating current magnetic field, ground signal receiving end 4 can sense the electromagnetic signal, be equivalent to
The open signal of ground power transmitting terminal 2.
It is understood that vehicle power supply here is provided by electric car, usual power supply is DC24V or DC12V, DC-
The design parameter of AC circuit is determined according to the voltage and determining first frequency of vehicle power supply.
Wherein, if predeterminated frequency ratio is too small, the electromagnetic signal of first frequency is easy to be believed by the harmonic wave of second frequency
Number interference effect；If predeterminated frequency ratio is too big, realize that the power device requirements of type selecting of first frequency is higher, cost without
Ji；Accordingly, it is considered to reduce harmonic wave interference and control two aspect factor of cost, the range of choice of predeterminated frequency ratio is generally in [7,15]
In the range of, such as when selecting the second frequency at ground power emission end 2 as 40kHz, it is 400kHz that first frequency, which may be selected,.
In the prior art, the means of communication for controlling charging system start and stop is usually the conventional wireless communications such as WiFi, this kind of logical
Conveniently section can transmit a variety of different information, various software systems are compatible with, but in wireless charging field, due in charging process
Information flow is single, and the strong feature of general communication means compatibility cannot give full play to, instead due to general communication means timeliness
Difference is easy by external environmental interference, and the application effect in wireless charging is undesirable.
And in the present embodiment, be equivalent to traditional communication information is the electromagnetic signal that electromagnetic coupling generates, appropriate frequency
Electromagnetic signal can be transmitted to fast and stable between cab signal transmitting terminal 3 and ground signal receiving end 4, and operating circuit is simple
It easily realizes, and without the defect of general communication means.
In fact, ground signal receiving end 4 senses the electromagnetic signal, the ground power transmitting terminal 2 is controlled with
Movement of two frequencies to vehicle-mounted 1 wireless transmitted power of power receiving end emits host particular by control ground power
It realizes, ground power emits host can be according to the signal of ground signal receiving end 42 output power of power emission end to the ground.
The embodiment of the invention discloses a kind of wireless charging system, including vehicle-mounted power receiving end, ground power transmitting terminal,
Cab signal transmitting terminal and ground signal receiving end, in which: the cab signal transmitting terminal generates alternating current magnetic field, to send first
The electromagnetic signal of frequency；When the ground signal receiving end senses the electromagnetic signal, the ground power transmitting terminal is controlled
With second frequency to the vehicle-mounted power receiving end wireless transmitted power；The wherein ratio of the first frequency and the second frequency
For predeterminated frequency ratio.
As it can be seen that when ground, signal receiving end is sensed using the electromagnetic signal of first frequency as communication signal in the present invention
Electromagnetic signal then opens ground power transmitting terminal and carries out power transmission；Different from the complicated circuit and right of prior art wireless communication
The compatibility of various Content of Communication, electromagnetic signal of the invention are actually cab signal transmitting in the alternating current magnetic field of first frequency
Electromagnetic coupling between end and ground signal receiving end, cooperation circuit is simple, and only signal receiving end transmits cab signal to the ground
Transmitting terminal is in or be not in two states, has a single function and efficient stable, and by external interference a possibility that is minimum.
The embodiment of the invention discloses a kind of specific wireless charging systems, relative to a upper embodiment, the present embodiment pair
Technical solution has made further instruction and optimization.Specific reference to shown in Fig. 2:
Wherein, wireless charging system includes two ground signal receiving ends 4, is separated by pre-determined distance and is distributed in vehicle row
Into on direction, so that two ground signal receiving ends 4 cannot sense the electromagnetic signal simultaneously.
It is understood that the sensing range of electromagnetic signal is a circle with cab signal transmitting terminal 3 for the center of circle, ground
Signal receiving end 4 is according to whether perceiving electromagnetic signal i.e. can determine whether at a distance from cab signal transmitting terminal 3, to judge whether
Control 2 transimission power of ground power transmitting terminal.
Specifically, if only one cab signal transmitting terminal 3 of wireless charging system and a ground signal receiving end 4,
Ground signal receiving end 4 controls 2 transimission power of ground power transmitting terminal when sensing electromagnetic signal, when electromagnetic signal disappears
Stop 2 transimission power of ground power emission end.Consider communication lag, the electricity of cab signal transmitting terminal 3 and ground signal receiving end 4
The magnetic coupling time is necessarily slightly longer than the time that vehicle-mounted power receiving end 1 receives transimission power.
If wireless system has a cab signal transmitting terminal 3 and two ground signal receiving ends 4, it will be able to release ground
The directly related property of signal receiving end 4 and ground power transmitting terminal 2.
Specifically, wireless charging system includes two ground signal receiving ends 4, it is separated by pre-determined distance and is distributed in vehicle
On direction of travel, so that two ground signal receiving ends 4 cannot sense the electromagnetic signal simultaneously, two ground at this time
Pre-determined distance between signal receiving end 4 is greater than cab signal transmitting terminal 3 in the signal radiation range of vehicle traveling direction.
Generally for the sake of accurate, require signal radiation range smaller when first frequency is set, that is to say, that ground
Signal receiving end 4 only experiences electromagnetic signal in 3 Shi Caineng of face cab signal transmitting terminal；It is contemplated that the operation rail of vehicle
Mark error, the deviation ratio for generally allowing to have within ± 10%.
If being mounted with that the vehicle of cab signal transmitting terminal 3 is advanced along vehicle traveling direction forward or backwards always,
It will appear following scenario described:
Some ground signal receiving end 4 first senses electromagnetic signal；The electromagnetism letter that the ground signal receiving end 4 senses
Number disappear；Another ground signal receiving end 4 senses electromagnetic signal again；The electromagnetism letter that the ground signal receiving end 4 senses
Number disappear.
If vehicle is walked half and refunded along vehicle traveling direction, it is possible that following situations:
Sense that electromagnetic signal, electromagnetic signal disappear close to 4 first time of ground signal receiving end of the vehicle；
Electromagnetic signal is experienced in the ground signal receiving end for the second time, and electromagnetic signal disappears again.
It has been discovered that either vehicle always advance by same direction, still walks half and refund, electromagnetic signal is
--- disappearance --- occurring again --- disappears again, can monitor the state of two ground signal receiving ends 4, and ground power is arranged for appearance
The logic of 2 wireless transmitted power of transmitting terminal: first time electromagnetic signal starts transimission power when occurring, and second of electromagnetic signal occurs
When stop transimission power.
Based on two ground signal receiving ends 4, the two-way traveling of vehicle and the dynamic charging for direction of travel of moving backward may be implemented,
Solves the two-way charging that traditional vehicle can only be realized according to headstock direction, and logically design realizes that reversing is dynamically and quiet
State charging, advancing stops charging etc..
Further, the wireless charging system includes two vehicle-mounted power receptions for being located at headstock and the tailstock
End 1.The arrangement of two vehicle-mounted power receiving ends 1 increases the opposite spoke of vehicle-mounted power receiving end 1 and ground power transmitting terminal 2
Area is penetrated, it is opposite to extend vehicle by the electric time, avoid vehicle from being likely to occur in the discontinuous situation of small range dynamic device
Power swing.
Specifically, the cab signal transmitting terminal 3 is located in the middle part of car body；The ground power transmitting terminal 4 is located at two institutes
The midpoint for stating ground signal receiving end 2 proposes the effect of high power delivery by appropriately arranging the position of each component of wireless charging system
Rate.
Further, the wireless charging system further include:
It is separately connected two AC-DC converting units 5 of two vehicle-mounted power receiving ends 1；
The controller 6 of two 5 working conditions of AC-DC converting unit is controlled respectively；
Receive the on-vehicle battery 7 of the output power of two AC-DC converting units.
It is understood that each vehicle-mounted power receiving end 1 is respectively by individual AC-DC converting unit 5, in output end
Positive bus-bar carries out in parallel and is output to on-vehicle battery 7 in the case where increasing counnter attack diode.Each AC-DC converting unit 5 configures
Corresponding controller 6, realizes the acquisition and control to the parameter of each vehicle-mounted power receiving end 1, to guarantee vehicle mounted electric as far as possible
The continuity of 7 input power of pond avoids power swing from influencing the service life of on-vehicle battery 7.
Correspondingly, the invention discloses a kind of wireless charging method, it is shown in Figure 3, comprising:
S11: alternating current magnetic field is generated using cab signal transmitting terminal, to send the electromagnetic signal of first frequency；
S12: when ground, signal receiving end senses the electromagnetic signal, controls the ground power transmitting terminal with the second frequency
Rate is to vehicle-mounted power receiving end wireless transmitted power；
Wherein the ratio of the first frequency and the second frequency is predeterminated frequency ratio.
Wherein, cab signal transmitting terminal 3 and ground signal receiving end 4 generally use LCL structure, and vehicle power supply utilizes DC-
AC circuit conversion obtains the alternating current of first frequency and is transferred to cab signal transmitting terminal 3, and cab signal transmitting terminal 3 generates first
The alternating current magnetic field of frequency, to send the electromagnetic signal of first frequency；If cab signal transmitting terminal 3 and ground signal receiving end 4
Distance is appropriate, it will be able to couple in the alternating current magnetic field, ground signal receiving end 4 can sense the electromagnetic signal, be equivalent to
The open signal of ground power transmitting terminal 2.
It is understood that vehicle power supply here is provided by electric car, usual power supply is DC24V or DC12V, DC-
The design parameter of AC circuit is determined according to the voltage and determining first frequency of vehicle power supply.
Wherein, if predeterminated frequency ratio is too small, the electromagnetic signal of first frequency is easy to be believed by the harmonic wave of second frequency
Number interference effect；If predeterminated frequency ratio is too big, realize that the power device requirements of type selecting of first frequency is higher, cost without
Ji；Accordingly, it is considered to reduce harmonic wave interference and control two aspect factor of cost, the range of choice of predeterminated frequency ratio is generally in [7,15]
In the range of, such as when selecting the second frequency at ground power emission end 2 as 40kHz, it is 400kHz that first frequency, which may be selected,.
As it can be seen that when ground, signal receiving end is sensed using the electromagnetic signal of first frequency as communication signal in the present invention
Electromagnetic signal then opens ground power transmitting terminal and carries out power transmission；Different from the complicated circuit and right of prior art wireless communication
The compatibility of various Content of Communication, electromagnetic signal of the invention are actually cab signal transmitting in the alternating current magnetic field of first frequency
Electromagnetic coupling between end and ground signal receiving end, cooperation circuit is simple, and only signal receiving end transmits cab signal to the ground
Transmitting terminal is in or be not in two states, has a single function and efficient stable, and by external interference a possibility that is minimum.
The embodiment of the invention discloses a kind of specific wireless charging methods, relative to a upper embodiment, the present embodiment pair
Technical solution has made further instruction and optimization.
Specifically, two ground signal receiving ends, are separated by pre-determined distance and are distributed in vehicle traveling direction, so that two
A ground signal receiving end cannot sense the electromagnetic signal simultaneously；
Generally for the sake of accurate, require signal radiation range smaller when first frequency is set, that is to say, that ground
Signal receiving end 4 only experiences electromagnetic signal in 3 Shi Caineng of face cab signal transmitting terminal；It is contemplated that the operation rail of vehicle
Mark error, the deviation ratio for generally allowing to have within ± 10%.
Shown in Figure 4, the motion flow in the present embodiment includes:
S21: alternating current magnetic field is generated using cab signal transmitting terminal, to send the electromagnetic signal of first frequency；
S22: the electromagnetic signal is sensed when any in two ground signal receiving ends for the first time, control is describedly
Face power emission end is with the second frequency to the vehicle-mounted power receiving end wireless transmitted power；
S23: the electromagnetic signal is sensed when any in second of two ground signal receiving end, is stopped describedly
Face power emission end is to the vehicle-mounted power receiving end wireless transmitted power.
It has been discovered that either vehicle always advance by same direction, still walks half and refund, electromagnetic signal is
--- disappearance --- occurring again --- disappears again, can monitor the state of two ground signal receiving ends 4, and ground power is arranged for appearance
The logic of transmitting terminal wireless transmitted power: first time electromagnetic signal starts transimission power when occurring, and second of electromagnetic signal occurs
When stop transimission power.
Based on two ground signal receiving ends, the two-way traveling of vehicle and the dynamic charging for direction of travel of moving backward may be implemented,
Solves the two-way charging that traditional vehicle can only be realized according to headstock direction, and logically design realizes that reversing is dynamically and quiet
State charging, advancing stops charging etc..
Further, two vehicle-mounted power receiving ends are located at headstock and the tailstock；
So the control ground power transmitting terminal is wireless to the vehicle-mounted power receiving end with the second frequency
The process of transimission power, specifically further include:
Two vehicle-mounted power receiving ends are controlled respectively, and electric energy is continuously conveyed to on-vehicle battery.
It is understood that the arrangement of two vehicle-mounted power receiving ends, increases vehicle-mounted power receiving end and ground power
The relative radiation area of transmitting terminal, it is opposite to extend vehicle by the electric time, then by AC-DC converting unit to each vehicle-mounted power
Receiving end is controlled, and to guarantee the continuity of on-vehicle battery input power as far as possible, avoids vehicle from being likely to occur small range dynamic
Power swing in the discontinuous situation of state equipment, extends the service life of each equipment.
As it can be seen that the wireless charging method reliability in the present embodiment is higher, the energy wave of ground power transmitting terminal is avoided
Take, the service efficiency of energy improves.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
A kind of wireless system provided by the present invention and method are described in detail above, it is used herein specifically
Principle and implementation of the present invention are described for a example, the present invention that the above embodiments are only used to help understand
Method and its core concept；At the same time, for those skilled in the art is being embodied according to the thought of the present invention
There will be changes in mode and application range, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of wireless charging system, which is characterized in that including vehicle-mounted power receiving end, ground power transmitting terminal, cab signal
Transmitting terminal and ground signal receiving end, in which:
The cab signal transmitting terminal generates alternating current magnetic field, to send the electromagnetic signal of first frequency；
When the ground signal receiving end senses the electromagnetic signal, control the ground power transmitting terminal with second frequency to
The vehicle-mounted power receiving end wireless transmitted power；
Wherein the ratio of the first frequency and the second frequency is predeterminated frequency ratio.
2. wireless charging system according to claim 1, which is characterized in that be separated by pre-determined distance including two and be distributed in vehicle
The ground signal receiving end on direction of travel, is separated by pre-determined distance and is distributed in vehicle traveling direction, so that described in two
Ground signal receiving end cannot sense the electromagnetic signal simultaneously.
3. wireless charging system according to claim 2, which is characterized in that be located at the institute of headstock and the tailstock including two
State vehicle-mounted power receiving end.
4. wireless charging system according to claim 3, which is characterized in that further include:
It is separately connected two AC-DC converting units of two vehicle-mounted power receiving ends；
The controller of two AC-DC converting unit working conditions is controlled respectively；
Receive the on-vehicle battery of the output power of two AC-DC converting units.
5. wireless charging system according to claim 4, which is characterized in that
The cab signal transmitting terminal is located in the middle part of car body；
The ground power transmitting terminal is located at the midpoint of two ground signal receiving ends.
6. according to claim 1 to any one of 6 wireless charging systems, which is characterized in that
The predeterminated frequency ratio is in the range of [7,15].
7. a kind of wireless charging method characterized by comprising
Alternating current magnetic field is generated using cab signal transmitting terminal, to send the electromagnetic signal of first frequency；
When ground, signal receiving end senses the electromagnetic signal, controls the ground power transmitting terminal with second frequency to vehicle-mounted
Power receiving end wireless transmitted power；
Wherein the ratio of the first frequency and the second frequency is predeterminated frequency ratio.
8. wireless charging method according to claim 7, which is characterized in that two ground signal receiving ends are separated by pre-
If range distribution is in vehicle traveling direction, so that two ground signal receiving ends cannot sense the electromagnetism letter simultaneously
Number；
Then when the ground signal receiving end senses the electromagnetic signal, the ground power transmitting terminal is controlled with second frequency
To the process of the vehicle-mounted power receiving end wireless transmitted power, specifically include:
The electromagnetic signal is sensed when any in two ground signal receiving ends for the first time, controls the ground power hair
End is penetrated with the second frequency to the vehicle-mounted power receiving end wireless transmitted power；
The electromagnetic signal is sensed when any in second of two ground signal receiving end, stops the ground power hair
End is penetrated to the vehicle-mounted power receiving end wireless transmitted power.
9. wireless charging method according to claim 8, which is characterized in that two vehicle-mounted power receiving ends are located at
Headstock and the tailstock；
The control ground power transmitting terminal is with the second frequency to the vehicle-mounted power receiving end wireless transmitted power
Process, specifically further include:
Two vehicle-mounted power receiving ends are controlled respectively, and electric energy is continuously conveyed to on-vehicle battery.
10. according to any one of claim 7 to 9 wireless charging method, which is characterized in that
The predeterminated frequency ratio is in the range of [7,15].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN105958555A (en) * | 2015-03-07 | 2016-09-21 | 现代自动车美国技术研究所 | Interoperable ev wireless charging system |
| CN106208398A (en) * | 2014-11-13 | 2016-12-07 | 现代自动车株式会社 | Wireless charging system |
| CN106561004A (en) * | 2016-06-16 | 2017-04-12 | 中兴新能源汽车有限责任公司 | Wireless communication method and device |
| CN109094400A (en) * | 2018-08-17 | 2018-12-28 | 广西电网有限责任公司电力科学研究院 | A kind of dynamic radio charging system based on vehicle-mounted RFID tag |
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| CN106208398A (en) * | 2014-11-13 | 2016-12-07 | 现代自动车株式会社 | Wireless charging system |
| CN105958555A (en) * | 2015-03-07 | 2016-09-21 | 现代自动车美国技术研究所 | Interoperable ev wireless charging system |
| CN106561004A (en) * | 2016-06-16 | 2017-04-12 | 中兴新能源汽车有限责任公司 | Wireless communication method and device |
| CN109094400A (en) * | 2018-08-17 | 2018-12-28 | 广西电网有限责任公司电力科学研究院 | A kind of dynamic radio charging system based on vehicle-mounted RFID tag |
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Application publication date: 20190517 |