CN106560972A - Communication system and vehicle wireless charging device - Google Patents
Communication system and vehicle wireless charging device Download PDFInfo
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- CN106560972A CN106560972A CN201610969541.4A CN201610969541A CN106560972A CN 106560972 A CN106560972 A CN 106560972A CN 201610969541 A CN201610969541 A CN 201610969541A CN 106560972 A CN106560972 A CN 106560972A
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- 238000004891 communication Methods 0.000 title claims abstract description 53
- 238000010276 construction Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 8
- 238000013519 translation Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000011664 signaling Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 208000032370 Secondary transmission Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
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- H02J7/025—
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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
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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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a communication system and a vehicle wireless charging device. The communication system comprises a primary converter located in a capital construction side, and a secondary converter located in a vehicle-loaded side. The communication system comprises a primary winding, a primary antenna and a primary controller which are all located in the capital construction side. The vehicle wireless charging system also comprises a secondary winding, a secondary antenna and a secondary controller which are all located in the vehicle-loaded side. The currents and voltages transmitted in and inducted between the primary winding and the secondary winding all contain zero-crossing information. The primary controller detects the zero-crossing condition of the current and voltage of the primary converter, and when a zero-crossing is detected, sends or receives digital signals through the primary antenna. The secondary controller detects the zero-crossing condition of the current and voltage of the secondary converter, and when a zero-crossing is detected, the digital signals are sent and received through the secondary antenna. The technical scheme enhances the stability of the communication system.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of communication system and using the wireless of the communication system
Charging equipment for automobile.
Background technology
At present automobile charges mainly using wired charging and wireless charging two ways.Wireless charging eliminates electronic vapour
Frequent contact, reduction Manual operation link of the car with charge power supply, simplifies charge step and reduces charging cost, thus
To widely application.
The wireless charging system of automobile includes capital construction side part and vehicle-mounted side part, and capital construction side part is usually provided with former limit
Radio communication device, vehicle-mounted side part is usually provided with secondary radio communication device, by former limit radio communication device and secondary
The single channel that radio communication device is formed is communicated, and in high-power charging occasion, communication is easily disturbed, so as to cause to charge
Failure.
The content of the invention
The main object of the present invention is to provide a kind of communication system, it is intended to improve the stability of communication system.
For achieving the above object, the present invention proposes a kind of communication system of knowing clearly, and is applied to automobile wireless charging device, described
Automobile wireless charging device includes capital construction side and vehicle-mounted side, and the capital construction side includes former limit converter, and the vehicle-mounted side includes pair
Side converter, the communication system includes being located at primary coil, former limit antenna and the primary controller of capital construction side, the communication system
Also include being located at secondary coil, secondary antenna and the secondary controller of vehicle-mounted side；
The primary coil and the secondary coil, the voltage or electric current of transmission；The primary coil and the secondary line
The voltage or electric current transmitted between circle includes zero crossing information；
The primary controller, detects the zero crossing of voltage or electric current in former limit converter, and when zero crossing is detected,
Launch or receive data signal by the former limit antenna；The secondary controller, voltage or electric current in detection secondary converter
Zero crossing, and when zero crossing is detected, launch or receive data signal by the secondary antenna.
Preferably, former limit converter is connected respectively with primary coil and primary controller, secondary converter respectively with secondary
Coil and secondary controller connect；The primary controller is connected with former limit antenna, and the secondary controller connects with secondary antenna
Connect
Preferably, frequency of the frequency of the zero crossing information of the voltage or electric current less than or equal to the data signal of twice
Rate.
Preferably, the primary controller includes primary-side-control circuit and former limit modulation-demodulation circuit, the secondary control
Device includes secondary control circuit and secondary modulation-demodulation circuit；
Former limit modulation-demodulation circuit is electrically connected with the former limit antenna described in the primary-side-control circuit Jing；The secondary control
Secondary modulation-demodulation circuit is electrically connected with the secondary antenna described in circuit Jing processed.
Preferably, the primary coil is formed with the first signalling channel, the former limit antenna and the pair with secondary coil
Side antenna is formed with secondary signal passage；
When the primary-side-control circuit or secondary control circuit detect the zero crossing information of voltage or electric current, the former limit
Again by secondary signal passage transmission data signal after control circuit or secondary control circuit time delay Preset Time.
Preferably, when the primary-side-control circuit or secondary control circuit detect the zero crossing information of voltage or electric current,
Pass through secondary signal channel reception data signal after the primary-side-control circuit or secondary control circuit time delay Preset Time again.
Preferably, the Preset Time is less than transmitting voltage or current cycle between the primary coil and secondary coil
1/4。。
Preferably, the primary-side-control electric circuit inspection to voltage or electric current zero crossing information and detect data signal
Start bit when, former limit modulation-demodulation circuit demodulated signal is then turned on after the primary-side-control circuit delay Preset Time；
The zero crossing information of voltage or electric current is detected in the secondary control circuit and detect the starting of data signal
During position, after the secondary control circuit time delay Preset Time secondary modulation-demodulation circuit demodulated signal is then turned on.
The present invention also proposes a kind of automobile wireless charging device, and the automobile wireless charging device includes being located at the original of capital construction side
Side converter, the secondary converter positioned at vehicle-mounted side and communication system as above；
The primary controller, controls the former limit converter and enters electric energy after line translation by primary coil and secondary line
Circle is transmitted to secondary converter；The secondary controller controls to be filled to load after the secondary converter converts again electric energy
Electricity.
Preferably, the former limit converter includes former limit rectification circuit, regulating circuit, inverter circuit and former limit compensation electricity
Road, the secondary converter includes secondary side rectification circuit and secondary compensation circuit；
The first input end of the former limit rectification circuit and the second input access civil power, and the of the former limit rectification circuit
One output end and the second output end are connected respectively with the first input end and the second input of the regulating circuit；The pressure regulation electricity
First output end and the second output end on road is connected respectively with the first input end and the second input of the inverter circuit；It is described
First output end and the second output end of inverter circuit connects respectively with the first input end and the second input of former limit compensation circuit
Connect, first output end and the second output end of former limit compensation circuit first end respectively with the primary coil and the second end
Connection；The collection terminal of the former limit compensation circuit is connected with the primary controller, and the primary controller is also electrically connected with antenna
Connect；
The secondary coil and the primary coil electromagnetic coupled, the first end of the secondary coil and the second end respectively with
The first input end of the secondary compensation circuit and the second input connect, the first output end of the secondary compensation circuit and the
Two output ends are connected respectively with the first input end and the second input of the secondary side rectification circuit；The secondary side rectification circuit
First output end and the second output end are connected with battery；The collection terminal of the secondary compensation circuit connects with the secondary controller
Connect, the secondary controller is also electrically connected with antenna；
The control end of primary controller controlled end respectively with the former limit rectification circuit, the regulating circuit are received
The controlled end connection of control end and the inverter circuit；The control end of the secondary controller is controlled with the secondary side rectification circuit
End connection.
Technical solution of the present invention is by arranging the primary coil, former limit antenna, primary controller, secondary coil, secondary day
Line and secondary controller, define a kind of communication system.Couple between primary coil and secondary coil, communication system passes through former limit
The zero crossing information of coil and secondary coil transmission voltage or electric current.Under the lateral vehicle-mounted side transmission data signal state of capital construction,
Primary controller launches data signal when voltage or current zero-crossing point is detected by former limit antenna, and secondary controller is in detection
Begin through secondary antenna again to after voltage or current zero-crossing point and receive data signal；Similarly, in vehicle-mounted lateral capital construction side
Under transmission data signal state, secondary controller is when voltage or current zero-crossing point is detected by secondary antenna transmitting numeral letter
Number, primary controller is after curtage zero crossing is detected again by former limit antenna reception data signal.Relative to biography
The mono signal passage of system, technical solution of the present invention transmits voltage or electric current by primary coil and secondary coil, wherein transmit
Contain zero crossing information in voltage or electric current, and communicated in former limit antenna and secondary antenna transmission data signal, in zero passage
Received or transmission signal during point, effectively reduced the interference to communicating under high-power charging operating mode, improve system communication
Antijamming capability.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the functional block diagram that communication system of the present invention unifies embodiment；
Fig. 2 is the functional block diagram of communication system further embodiment of the present invention；
Fig. 3 is communication system communication waveform first embodiment schematic diagram of the present invention；
Fig. 4 is communication system communication waveform second embodiment schematic diagram of the present invention；
Fig. 5 is communication system communication waveform 3rd embodiment schematic diagram of the present invention；
Fig. 6 is the structural representation of former limit compensation circuit first embodiment of the present invention；
Fig. 7 is the structural representation of former limit compensation circuit second embodiment of the present invention；
Fig. 8 is the structural representation of former limit compensation circuit 3rd embodiment of the present invention.
Drawing reference numeral explanation：
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment a part of embodiment only of the invention, rather than the embodiment of whole.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each part etc. are explained, if should
When particular pose changes, then directionality indicates also correspondingly to change therewith.
In addition, the description for being related to " first ", " second " etc. in the present invention is only used for describing purpose, and it is not intended that referring to
Show or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", "
Two " at least one this feature can be expressed or be implicitly included to feature.In addition, the technical scheme between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs
It is conflicting or when cannot realize it will be understood that the combination of this technical scheme is not present, also not in the protection model of application claims
Within enclosing.
The present invention proposes a kind of communication system, is applied to automobile wireless charging device, and the automobile wireless charging device includes
Former limit converter 100 and secondary converter 200.
With reference to Fig. 1 and Fig. 2, in embodiments of the present invention, the communication system includes being located at primary coil Lp, the original of capital construction side
Side antenna 400 and primary controller 300, the automobile wireless charging system also includes being located at secondary coil Ls, the pair of vehicle-mounted side
Side antenna 600 and secondary controller 500.
The primary coil Lp and secondary coil Ls, the voltage or electric current of transmission；The primary coil Lp and described
The voltage or electric current transmitted between secondary coil Ls includes the zero crossing information of voltage or electric current；The primary controller 300,
The zero crossing of voltage or electric current in detection former limit converter 100, and when zero crossing is detected, by the former limit antenna 400
Transmitting receives data signal；The secondary controller 500, detects the zero crossing of voltage or electric current in secondary converter 200, and
When zero crossing is detected, by the secondary antenna 600 data signal is launched or receives.
Communication system includes the first signalling channel (not shown) and secondary signal passage (not shown), and first signal leads to
Road is arranged between the primary coil Lp and the secondary coil Ls；The secondary signal passage is arranged at the former limit antenna
Between 400 and the secondary antenna 600.
It should be noted that primary coil Lp and secondary coil Ls are respectively automobile wireless charging device loosely coupled transformer
Primary side winding and vice-side winding, primary coil Lp and secondary coil Ls intercouples, former limit electric energy transmitted to secondary, to electricity
The battery of electrical automobile is charged.In technical solution of the present invention, primary coil Lp and secondary coil Ls transfer overvoltages are also used
Or the zero crossing information of electric current.
Technical solution of the present invention is by arranging primary coil Lp, former limit antenna 400, primary controller 300, secondary coil
Ls, secondary antenna 600 and secondary controller 500, define a kind of communication system.Coupling between primary coil Lp and secondary coil Ls
Close, communication system transmits the zero crossing information of voltage or electric current by primary coil Lp and secondary coil Ls.In the lateral car of capital construction
Under carrying side transmission data signal state, primary controller 300 passes through former limit antenna 400 when voltage or current zero-crossing point is detected
Transmitting data signal, secondary controller 500 begins through again secondary antenna 600 after voltage or current zero-crossing point is detected and connects
Receive data signal；Similarly, under vehicle-mounted lateral capital construction side transmission data signal state, secondary controller 500 is detecting electricity
Data signal is launched by secondary antenna 600 when pressure or current zero-crossing point, primary controller 300 is detecting curtage mistake
Again by the reception data signal of former limit antenna 400 after zero point.Relative to traditional mono signal passage, technical solution of the present invention is led to
Primary coil Lp and secondary coil Ls transmission voltages or electric current are crossed, wherein the voltage for transmitting or contain zero crossing information in electric current,
And communicated in former limit antenna and secondary antenna transmission data signal, combining carries out the transmission of signal, and enters in zero crossing
Row is received or transmission signal, effectively reduces the interference to communicating under high-power charging operating mode, improves the anti-dry of system communication
Disturb ability.
Specifically, former limit converter 100 is connected respectively with primary coil and primary controller, secondary converter respectively with pair
Sideline is enclosed and secondary controller connection；The primary controller is connected with former limit antenna, the secondary controller and secondary antenna
Connection.
The signalling channel of the communication system first transmits forceful electric power signal, and the forceful electric power signal includes former limit converter 100
The zero crossing information of voltage or electric current；The communication system secondary signal channel transfer weak electric signal, the weak electric signal includes
The output of primary controller 300 or the output of secondary controller 500 data signal.
It should be noted that the signalling channel formed between primary coil Lp and secondary coil Ls is used to transmit forceful electric power letter
Number, including in former limit converter 100 voltage or Current Voltage or electric current zero crossing information, also including former limit converter 100
The real time analogue signals such as magnitude of voltage, current value, frequency.And it is used for transmission between former limit antenna 400 and secondary antenna 600 containing tune
The data signal of information processed.
Further, the primary controller 300 or the secondary controller 500 detect the zero crossing of voltage or electric current
During information, data signal is launched by secondary signal channel transfer.
In the embodiment of the present invention, zero cross signal as a kind of synchronizing signal, i.e., in primary controller 300 or secondary controller
When 500 detection voltages or current zero-crossing point, primary controller 300 launches data signal by former limit antenna 400, at the same time,
Secondary controller 500 starts to receive signal by secondary antenna 600；Or secondary transmission signal, former limit reception signal.Pass through
Signal transmission is proceeded by zero-crossing of alternating current, power in former limit converter 100 or secondary converter 200 is greatly reduced
Interference of the circuit to communicating, improves the stability of communication.
Further, frequency of the frequency of the forceful electric power signal less than or equal to the weak electric signal of twice.
It should be noted that forceful electric power signal frequency fs and actual modulated signal frequency fb meet fb≤2*fs, work as fb=2*
During fs, the corresponding duration of each bit of data signal is half cycle, and each zero crossing is synchronizing signal；Work as fb=
During fs, the whole cycle of data signal each bit correspondence duration, every a zero crossing be all synchronizing signal.Recommend
Adopt fs=n*fb (n is more than 1 and n for positive integer), after the relation of fs and fb is determined, each bit duration
It is fixed.
Further, the primary controller 300 includes primary-side-control circuit 310 and former limit modulation-demodulation circuit 320, institute
Secondary controller 500 is stated including secondary control circuit 510 and secondary modulation-demodulation circuit 520；The Jing of primary-side-control circuit 310
The former limit modulation-demodulation circuit 320 is electrically connected with the former limit antenna 400；Secondary described in the Jing of secondary control circuit 510
Modulation-demodulation circuit 520 is electrically connected with the secondary antenna 600.
In the present embodiment, one end of transmission signal is referred to as transmitting terminal, and the one end for receiving signal is receiving terminal.
With reference to Fig. 3, it should be noted that former limit modulation-demodulation circuit 320 or secondary modulation-demodulation circuit 520 are used for letter
Number modulation /demodulation, the information that for example former limit modulation-demodulation circuit 320 will be transmitted be modulated after by the nothing of former limit antenna 400
Line is launched to secondary antenna 600, and 520 pairs of signals for receiving of secondary modulation-demodulation circuit are demodulated, and completes communication.
In Fig. 3 to Fig. 5 from top to bottom, it is successively zero crossing information waveform, the transmitting terminal numeral of transmitting terminal voltage or electric current
Voltage or the zero crossing information waveform of electric current and digital signal waveform that signal waveform, receiving terminal are received.t1、t2、t3、t4、
T5, t6 are the zero crossing moment of zero signal waveform.
With reference to Fig. 4, further, the primary-side-control circuit 310 or secondary control circuit 510 detect voltage or electric current
Zero crossing information when, after the primary-side-control circuit 310 or the time delay Preset Time of secondary control circuit 510 again by second letter
Number channel reception data signal.I.e. after transmitting terminal starts to send data signal, the primary-side-control circuit 310 of receiving terminal or secondary
When control circuit 510 detects the zero crossing information of voltage or electric current, after time delay Preset Time, then the week for receiving transmitting terminal transmitting
Phase property data signal.In the present embodiment, the Preset Time be less than between the primary coil and secondary coil transmit voltage or
The 1/4 of current cycle.
With reference to Fig. 5, further, the primary-side-control circuit 310 or secondary control circuit 510 detect voltage or electric current
Zero crossing information when, after the primary-side-control circuit 310 or the time delay Preset Time of secondary control circuit 510 again by second letter
Number passage sends data signal.
Time delay Preset Time can ensure that transmitting terminal when high rate data transmission data, and receiving terminal can be opened in zero crossing
Dynamic demodulator circuit demodulated signal so that minimum by the interference of wireless charging system.
With continued reference to Fig. 5, further, in the primary-side-control circuit 310 the zero crossing letter of voltage or electric current is detected
When ceasing and detecting the start bit of data signal, former limit modulation is then turned on after the time delay Preset Time of the primary-side-control circuit 310
The demodulated signal of demodulator circuit 320；The zero crossing information of voltage or electric current is detected in the secondary control circuit 510 and detect
During the start bit of data signal, after the time delay Preset Time of the secondary control circuit 510 secondary modulation-demodulation circuit 520 is then turned on
Demodulated signal.
It should be noted that the data signal containing modulation intelligence is circulation transmitting in a periodic manner, until receiving
End receives just terminates.Include start bit in the data signal in each cycle, in receiving terminal voltage or electric current are detected
Zero crossing information and when detecting the start bit of data signal, is then turned on corresponding former limit or secondary modulation-demodulation circuit 520, opens
Begin to receive signal.Interference of the line charging system to communicating so can be further reduced, and reduces the performance of subsequent process circuit
Require, so as to reduces cost.
The process to signal modulation in secondary signal passage and demodulation of now illustrating is illustrated, and capital construction is assumed in the present embodiment
Side is signal transmitting terminal, and vehicle-mounted side is signal receiving end.Capital construction side will export 10,101 5 binary messages, and these information are led to
The mode for crossing FSK (Frequency-shift keying, frequency shift keying) modulation is converted to the signal that frequency is f1 by 1, by 0 turn
It is changed to the signal that frequency is f2.
The current zero-crossing point information that vehicle-mounted side capture is transmitted by the first signalling channel, then secondary modulation /demodulation is electric
Work after the time delay Preset Time of road 520, can so allow secondary modulation-demodulation circuit 520 to be started working near zero-crossing point, greatly
The interference of main power circuit is reduced greatly.If secondary modulation-demodulation circuit 520 has not demodulated 0 or 1 information, capital construction is illustrated
Side does not have information to send, and is persistently detected；If secondary modulation-demodulation circuit 520 has demodulated 0 or 1 information, explanation is received
The information that capital construction side sends.With this zero crossing plus the initial time that delay time above is this information, and
Demodulating information in the position time range specified, if the information for going out for demodulating is consistent, for example, is all 1 or is all 0, illustrate to demodulate
The information for going out is errorless.If because interference caused comprising 0 and 1 in the information for demodulating, actually could be according to the two duration
The longer principle being defined is judged, so may result in the information for demodulating and malfunction, but by transmitting terminal and can be connect
The application layer verification of receiving end is judged, if verification error, can repeatedly send data.
Capital construction side captures the zero crossing of inverter circuit output current, former in the manner described above while zero crossing is captured
Information 1 is converted to the signal that frequency is f1 and is sent by side controller 300 by modulation circuit,
According to specified bit length, next zero crossing information of the capital construction side after the bit length specified is detected passes through
Primary controller 300 is converted to 0 the signal that frequency is f2 and sends by modulation-demodulation circuit, and vehicle-mounted lateral root is according to upper one
Initial time, bit length and next zero crossing judge the initial time of next bit information.It is vehicle-mounted to stress multiple above step
0 is demodulated to come.
So repeat, be sent so as to 10,101 5 binary messages will be exported.
The present invention also proposes a kind of automobile wireless charging device, and the automobile wireless charging device includes being located at the original of capital construction side
Side converter 100, the secondary converter 200 positioned at vehicle-mounted side and communication system as above；
The primary controller 300, controls the former limit converter 100 and enters electric energy after line translation to pass through primary coil Lp
And secondary coil Ls is transmitted to secondary converter 200；The secondary controller 500 controls the secondary converter 200 to electric energy
Charge to load after converting again.
Specifically, the former limit converter 100 include former limit rectification circuit 110, regulating circuit 120, inverter circuit 130,
And former limit compensation circuit 140, the secondary converter 200 includes secondary side rectification circuit 220 and secondary compensation circuit 210；
The first input end of the former limit rectification circuit 110 and the second input access civil power, the former limit rectification circuit
110 the first output end and the second output end are connected respectively with the first input end and the second input of the regulating circuit 120；
First output end and the second output end of the regulating circuit 120 respectively with the first input end and of the inverter circuit 130
Two inputs connect；First output end and the second output end of the inverter circuit 130 is respectively with the of former limit compensation circuit 140
One input and the second input connect, first output end and the second output end of the former limit compensation circuit 140 respectively with institute
State first end and the connection of the second end of primary coil Lp；The collection terminal of the former limit compensation circuit 140 and the primary controller
300 connections, the primary controller 300 is also electrically connected with antenna；
The secondary coil Ls and the primary coil Lp electromagnetic coupleds, the first end of the secondary coil Ls and the second end
It is connected with the first input end and the second input of the secondary compensation circuit 210 respectively, the of the secondary compensation circuit 210
One output end and the second output end are connected respectively with the first input end and the second input of the secondary side rectification circuit 220；Institute
The first output end and the second output end for stating secondary side rectification circuit 220 is connected with battery；The secondary compensation circuit 210 is adopted
Collection end is connected with the secondary controller 500, and the secondary controller 500 is also electrically connected with antenna；
The control end of the primary controller 300 controlled end, pressure regulation electricity respectively with the former limit rectification circuit 110
The controlled end connection of the controlled end on road 120 and the inverter circuit 130；The control end of the secondary controller 500 and the pair
The controlled end connection of side rectification circuit 220.
It should be noted that automobile wireless charging system is a kind of contact inductive electric energy transmission system, the leakage in system
Sense have impact on the active power of system transfers.In the present embodiment, the active power of system is improved by compensation circuit.
With reference to Fig. 6 to Fig. 8, compensation circuit includes following three embodiment：
Embodiment one, the compensation circuit includes the first electric capacity, wherein the first end of the first electric capacity and the inverter circuit 130
The first output end connection, the second end of the first electric capacity is connected with the first end of primary coil Lp.
Embodiment two, the compensation circuit includes the first electric capacity, and the first electric capacity is parallel to the first end of primary coil Lp and the
Between two ends.
Embodiment three, the compensation circuit includes the first electric capacity, the second electric capacity and the first inductance；The first end of the first inductance
It is connected with the first end output end of the inverter circuit 130, the first electric capacity and primary coil described in the second end Jing of the first inductance
The first end connection of Lp, the second electric capacity is parallel to primary coil Lp two ends.
It should be noted that the circuit configuration of secondary compensation circuit is identical with the circuit structure of former limit compensation circuit, its tool
Body circuit structure refer to former limit compensation circuit.
Further, automobile wireless charging system also include battery manager 700, the first of the battery manager 700
Input and the second input are connected respectively with first output end and the second output end of the secondary side rectification circuit 220, described
First output end and the second output end of battery manager 700 is connected with the electrokinetic cell.
Battery manager 700 is BMS (Battery Management System, battery management system), for battery
Electricity, voltage and electric current detected and managed.It is automatic that battery manager 700 has improve automobile wireless charging system whole
Change level.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every at this
Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly
It is included in the scope of patent protection of the present invention in other related technical fields.
Claims (10)
1. a kind of communication system, is applied to automobile wireless charging device, and the automobile wireless charging device includes capital construction side and car
Side is carried, the capital construction side includes former limit converter, and the vehicle-mounted side includes secondary converter, it is characterised in that the communication system
Including the primary coil positioned at capital construction side, former limit antenna and primary controller, the communication system also includes being located at vehicle-mounted side
Secondary coil, secondary antenna and secondary controller；Wherein,
The primary coil and the secondary coil, the voltage and current of transmission；The primary coil and the secondary coil it
Between transmit voltage or electric current include zero crossing information；
The primary controller, detects the zero crossing of voltage or electric current in former limit converter, and when zero crossing is detected, passes through
The former limit antenna transmitting receives data signal；The secondary controller, detects the mistake of voltage or electric current in secondary converter
Zero point, and when zero crossing is detected, launch or receive data signal by the secondary antenna.
2. communication system as claimed in claim 1, it is characterised in that former limit converter respectively with primary coil and primary-side-control
Device connects, and secondary converter is connected respectively with secondary coil and secondary controller；The primary controller is connected with former limit antenna,
The secondary controller is connected with secondary antenna.
3. the communication system as described in any one in claim 1, it is characterised in that the zero crossing letter of the voltage or electric current
Frequency of the frequency of breath less than or equal to the data signal of twice.
4. communication system as claimed in claim 1, it is characterised in that the primary controller includes primary-side-control circuit and original
Side modulation-demodulation circuit, the secondary controller includes secondary control circuit and secondary modulation-demodulation circuit；
Former limit modulation-demodulation circuit is electrically connected with the former limit antenna described in the primary-side-control circuit Jing；The secondary control electricity
Secondary modulation-demodulation circuit described in the Jing of road is electrically connected with the secondary antenna.
5. communication system as claimed in claim 4, it is characterised in that the primary coil is formed with the first letter with secondary coil
Number passage, the former limit antenna is formed with secondary signal passage with the secondary antenna；
When the primary-side-control circuit or secondary control circuit detect the zero crossing information of the voltage of voltage or electric current or electric current,
Again by secondary signal passage transmission data signal after the primary-side-control circuit or secondary control circuit time delay Preset Time.
6. communication system as claimed in claim 4, it is characterised in that the primary-side-control circuit or secondary control circuit are detected
To the voltage or electric current of voltage or electric current zero crossing information when, the primary-side-control circuit or the time delay of secondary control circuit are default
Pass through secondary signal channel reception data signal after time again.
7. the communication system as described in claim 5 or 6, it is characterised in that the Preset Time less than the primary coil and
The 1/4 of voltage or current cycle is transmitted between secondary coil.
8. communication system as claimed in claim 7, it is characterised in that in the primary-side-control electric circuit inspection to voltage or electric current
Zero crossing information and when detecting the start bit of data signal, be then turned on original after the primary-side-control circuit delay Preset Time
Side modulation-demodulation circuit demodulated signal；
When the secondary control circuit detects the zero crossing information of voltage or electric current and detects the start bit of data signal,
Secondary modulation-demodulation circuit demodulated signal is then turned on after the secondary control circuit time delay Preset Time.
9. a kind of automobile wireless charging device, it is characterised in that the automobile wireless charging device includes being located at the former limit of capital construction side
Converter, positioned at the secondary converter and the communication system as described in claim 1-8 any one of vehicle-mounted side；
The primary controller, controls the former limit converter and enters electric energy after line translation by primary coil and secondary coil biography
Transport to secondary converter；The secondary controller controls to be charged to load after the secondary converter converts again electric energy.
10. automobile wireless charging device as claimed in claim 9, it is characterised in that the former limit converter includes that former limit is whole
Current circuit, regulating circuit, inverter circuit and former limit compensation circuit, the secondary converter includes secondary side rectification circuit and secondary
Compensation circuit；
The first input end of the former limit rectification circuit and the second input access civil power, and the first of the former limit rectification circuit is defeated
Go out end and the second output end is connected respectively with the first input end and the second input of the regulating circuit；The regulating circuit
First output end and the second output end are connected respectively with the first input end and the second input of the inverter circuit；The inversion
First output end and the second output end of circuit is connected respectively with the first input end and the second input of former limit compensation circuit, institute
State first output end and the second output end of former limit compensation circuit to be connected with the first end of the primary coil and the second end respectively；
The collection terminal of the former limit compensation circuit is connected with the primary controller, and the primary controller is also electrically connected with antenna；
The secondary coil and the primary coil electromagnetic coupled, the first end of the secondary coil and the second end respectively with it is described
The first input end of secondary compensation circuit and the second input connect, the first output end of the secondary compensation circuit and second defeated
Go out end to be connected with the first input end and the second input of the secondary side rectification circuit respectively；The first of the secondary side rectification circuit
Output end and the second output end are connected with battery；The collection terminal of the secondary compensation circuit is connected with the secondary controller,
The secondary controller is also electrically connected with antenna；
The control end of primary controller controlled end, the controlled end of the regulating circuit respectively with the former limit rectification circuit
And the controlled end connection of the inverter circuit；The control end of the secondary controller connects with the controlled end of the secondary side rectification circuit
Connect.
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| CN201610969541.4A CN106560972B (en) | 2016-10-28 | 2016-10-28 | Communication system and wireless car charging device |
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| CN201610969541.4A CN106560972B (en) | 2016-10-28 | 2016-10-28 | Communication system and wireless car charging device |
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| CN114132189A (en) * | 2021-10-15 | 2022-03-04 | 深圳职业技术学院 | High-power multi-port wireless charging pile for electric automobile |
| CN114132189B (en) * | 2021-10-15 | 2023-04-11 | 深圳职业技术学院 | High-power multi-port wireless charging pile for electric automobile |
| CN115447409A (en) * | 2022-08-10 | 2022-12-09 | 广西电网有限责任公司电力科学研究院 | Wireless charging automobile secondary side voltage feedback system based on additional coupling channel |
| CN115447409B (en) * | 2022-08-10 | 2024-06-21 | 广西电网有限责任公司电力科学研究院 | Wireless charging automobile secondary side voltage feedback system based on additional coupling channel |
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