CN110266347A - Charge communication control unit and charging communication control method - Google Patents
Charge communication control unit and charging communication control method Download PDFInfo
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- CN110266347A CN110266347A CN201910638812.1A CN201910638812A CN110266347A CN 110266347 A CN110266347 A CN 110266347A CN 201910638812 A CN201910638812 A CN 201910638812A CN 110266347 A CN110266347 A CN 110266347A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
- H04B3/48—Testing attenuation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
- H04L67/145—Termination or inactivation of sessions, e.g. event-controlled end of session avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- Computer Security & Cryptography (AREA)
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- Quality & Reliability (AREA)
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- Medical Informatics (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of charging communication control unit and charging communication control methods, the charging communication control unit includes: two communication switching controllers, the communication switching controller includes: PLC (power line carrier communication) signal transmitting and receiving unit, charge communication protocol signals Transmit-Receive Unit, for sending and receiving charging communication protocol signals；Converting unit, for realizing the conversion between charging communication protocol signals and PLC signal；Described two communication switching controllers are respectively arranged at charging pile end and vehicle end, communication switching controller in stake end is used to carry out the transmission of charging communication protocol signals with charging pile end, vehicle end communicates switching controller, for carrying out the transmission of charging communication protocol signals with vehicle end；The stake end communication switching controller and vehicle end communication switching controller are also used to after the charging pile end and the vehicle end form electrical contact, are established and are connected to the network by PLC signal, realize the communication between stake end and vehicle end.
Description
Technical field
The present invention relates to communication control field more particularly to a kind of charging communication control unit and charging communication control sides
Method.
Background technique
It include at present inserting gun-type and electrode plate contact two ways to the mode that electric vehicle charges.Due to by
It is all smaller to insert gun-type charging pile charging current in charging for the limitation of charging gun and electric vehicle socket, thus charging is slow, fills
The electric time is long.Using the charging pile of electrode plate contact, charging pole plate can be mounted at the top of charging pile, when vehicle needs fill
When electric, it is parked in the corresponding position of charging pile, by the decline of control charging pole plate, is led with the electrode plate of vehicle roof or charging
Rail contact is charged, and high-power, high current transmission may be implemented, and can be used as the main charging side of one kind of electric bus
Formula.
In China electric vehicle DC charging standard, battery management system (BMS, the Battery of electric vehicle
Management System) and charging pile between communication be based on controller local area network (CAN) communication technology.For adopting
It, in order to realize the charging communication protocol of CAN communication, is needed with the charging modes of electrode plate dock due to having banned charging gun
Increase the additional communications cable, increase system complexity, reduces the flexibility of charging.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of charging communication control unit and charging communication control sides
Method improves the flexibility of charging communication.
To solve the above-mentioned problems, the present invention provides a kind of charging communication control units, comprising: two communication conversion controls
Device processed, the communication switching controller includes: PLC signal transmitting and receiving unit, for sending and receiving PLC signal；Charge communication protocols
Signal transmitting and receiving unit is discussed, for sending and receiving charging communication protocol signals；Converting unit, for realizing charging communication protocol letter
Conversion number between PLC signal；Described two communication switching controllers are respectively arranged at charging pile end and vehicle end, and stake end is logical
Letter switching controller is used to carry out the transmission of charging communication protocol signals with charging pile end, and vehicle end communicates switching controller, is used for
The transmission of charging communication protocol signals is carried out with vehicle end；The stake end communication switching controller and vehicle end communication conversion control
Device processed is also used to after the charging pile end and the vehicle end form electrical contact, is established and is connected to the network by PLC signal, is realized
Communication switching controller in stake end communicates the communication between switching controller with vehicle end.
Optionally, the stake end communication switching controller and vehicle end communication switching controller are also used to detect the charging pile
Electrical contact whether is formed between end and the vehicle end.
Optionally, the charging communication control unit further includes detection circuit, is set to the charging pile end and/or vehicle
End；Detecting the method that electrical contact whether is formed between the charging pile end and the vehicle end includes: the monitoring detection circuit
Circuit parameter；Judge the vehicle end is contacted with whether the charging pile end forms according to the circuit parameter.
Optionally, when whether forming electrical contact between the detection charging pile end and the vehicle end, the Che Duantong
For letter switching controller for persistently sending PLC detection signal and waiting PLC feedback signal to be received, the stake end communicates conversion and control
Device sends PLC feedback signal to the vehicle for the PLC detection signal to be received such as lasting and after receiving PLC detection signal
End communication switching controller；Communicate whether switching controller receives PLC detection signal and described according to the stake end
Whether vehicle end communication switching controller receives the PLC feedback signal and judges
No formation electrical contact.
Optionally, it forms electricity by stake termination electrode plate and vehicle termination electrode plate between the charging pile end and the vehicle end and connects
Touching.
Optionally, during establishing network connection by PLC signal, the vehicle end communication switching controller is used for institute
It states an end communication switching controller and sends PLC probe requests thereby, the stake end communication switching controller is used in idle waiting state
Under the PLC probe requests thereby is responded, and when determining the time-out of detection phase itself according to the PLC probe requests thereby information
Between；The vehicle end communication switching controller is also used to after the response for receiving the stake end communication switching controller, is sent and is visited
The measurement result to the detectable signal surveyed signal, and the stake end communication switching controller is waited to send back to；When the measurement
As a result meet matching to require, the vehicle end communication switching controller sends network connection to stake end communication switching controller and asks
It asks；The stake end communication switching controller is used for after receiving the network connecting request, the communication conversion control of Xiang Suoshu vehicle end
Device processed sends network parameter；The vehicle end communication switching controller is used to communicate conversion with the stake end according to the network parameter
Controller establishes network connection.
Optionally, the stake end communication switching controller is also used to carry out calculating acquisition to the detectable signal received
Measurement result carries out calculating the method for obtaining measurement result including: that the stake end communicates switching controller to the detectable signal
Decide whether the pad value for starting to calculate detectable signal according to the detectable signal number that the time-out time or expectation receive；When
When starting to calculate the pad value of detectable signal, interference threshold value and fade margin value are set；For in the detectable signal that receives
It is rejected higher than the interference threshold value and lower than the frequency range of the fade margin value, then remaining frequency sub-band value is carried out
It calculates.
Optionally, the stake end communication switching controller and vehicle end communication switching controller are also used to right in communication process
Abnormal subcarrier is shielded, comprising: shields not available subcarrier using the frequency spectrum requirement of region according to PLC signal；
Data modulation and subcarrier number are determined according to data transmission rates demands, are selected from remaining available subcarrier optimal
Subcarrier carry out data transmission；Power control is carried out according to transmission demand sub-carrier, is not transfinited in guarantee total transmission power
In the case where reasonable distribution is carried out different sub-carrier between signal power.
Optionally, the stake end communication switching controller communicates switching controller with the vehicle end and is also used in communication process
In mutually send heartbeat signal, to confirm communications status.
Optionally, the charging communication protocol signals are CAN signal.
Technical solution of the present invention also provides a kind of charging communication control method characterized by comprising detection charging pile
Whether end forms electrical contact with vehicle end；After detecting formation electrical contact between the charging pile end and vehicle end, pass through PLC
Signal establishes the network connection between charging pile end and vehicle end；
The communication between the charging pile end and the vehicle end is carried out by PLC signal, comprising: by the charging pile end
The charging communication protocol signals sent with the vehicle end are respectively converted into PLC signal and carry out letter between Che Duanyu charging pile end
Number transmission；The vehicle end and the received PLC signal in the charging pile end are respectively converted into charging communication protocol signals.
Optionally, the vehicle end and/or the charging pile end are formed with detection circuit, the detection charging pile end and vehicle
End whether form electrical contact method include: to be monitored to the circuit parameter of the detection circuit, according to the circuit join
Number judges whether the vehicle end and the charging pile end form electrical contact.
Optionally, the method that whether the detection charging pile end forms electrical contact with vehicle end includes: that vehicle end is persistently sent out
PLC detection signal and charging pile end is sent to send PLC feedback signal when receiving the PLC detection signal；It is filled according to described
Whether electric stake end receives the PLC detection signal and whether the vehicle end receives the PLC feedback signal and judge institute
It states charging pile end and whether the vehicle end forms electrical contact.
Optionally, it forms electricity by stake termination electrode plate and vehicle termination electrode plate between the charging pile end and the vehicle end and connects
Touching.
Optionally, the method for the network connection established between charging pile end and vehicle end by PLC signal includes: vehicle
It holds to the charging pile end and sends PLC probe requests thereby；The PLC probe requests thereby is responded at the charging pile end, and root
Time-out time is determined according to the PLC probe requests thereby information；Vehicle end sends detection after the response for receiving the charging pile end
Signal, and the measurement result to the detectable signal for waiting the charging pile end to send back to；It is matched when the measurement result meets
It is required that the vehicle end sends network connecting request；The charging pile end is after receiving the network connecting request, Xiang Suoshu
Vehicle end sends network parameter；The vehicle end is established according to the network parameter and the charging pile end and is connected to the network.
Optionally, the calculation method of the measurement result includes: the charging pile end according to the time-out time or phase
The detectable signal number received is hoped to decide whether the pad value for starting to calculate detectable signal；When the decaying for starting calculating detectable signal
When value, interference threshold value and fade margin value are set；It rejects and is higher than the interference threshold value in the detectable signal received
Frequency range with the fade margin value is lower than, then calculates remaining frequency sub-band value.
Optionally, further includes: the charging pile end shields abnormal subcarrier in communication process, comprising: according to
PLC signal shields not available subcarrier using the frequency spectrum requirement of region；Data are determined according to data transmission rates demands
Modulation system and subcarrier number select optimal subcarrier to carry out data transmission from remaining available subcarrier；According to biography
Defeated demand sub-carrier carries out power control, in the case where guaranteeing that total transmission power does not transfinite to signal power in different sub- loads
Reasonable distribution is carried out between wave.
Optionally, further includes: in communication process, the charging pile end and the vehicle end mutually send heartbeat signal,
To confirm communications status.
Optionally, the charging communication protocol signals are CAN signal.
The present invention charge communication control unit can by charging process between charging pile and vehicle charge cable and
The charging circuit of electrode plate etc. completes the communication between charging pile and vehicle end by plc communication, no longer needs to be additionally formed other
For realizing the communications cable communicated between charging pile and vehicle end, so as to reduce charging system complexity, improve
The flexibility of charging.
Further, before carrying out plc communication, the matching of vehicle end and charging pile end is carried out first, can be improved communication
The accuracy of connection.
Detailed description of the invention
Fig. 1 is the structural representation of the communication switching controller of the charging communication control unit of the embodiment of the invention
Figure；
Fig. 2 is the application scenarios structural schematic diagram of the charging communication control unit of the embodiment of the invention；
Fig. 3 is the flow diagram of the charging communication control method of the embodiment of the invention；
Fig. 4 is that the charging communication control unit of the embodiment of the invention charges between charging pile and vehicle
Communication scheme in the process.
Specific embodiment
With reference to the accompanying drawing to the specific reality of charging communication control unit provided by the invention and the communication control method that charges
The mode of applying elaborates.
Charging communication control unit of the invention is logical between power end and battery-end for during the charging process, realizing
Letter.
In a specific embodiment, the charging communication control unit is used for Vehicular charging communication control.Specifically,
The charging communication control unit includes that two communications fill changer controller.
Referring to FIG. 1, the modular structure schematic diagram of the communication switching controller 100 for the embodiment of the invention.
The communication switching controller 100 includes PLC signal transmitting and receiving unit 101, charging communication protocol signals Transmit-Receive Unit
102 and converting unit 103, PLC (power line carrier communication) the signal transmitting and receiving unit 101 is for sending and receiving PLC letter
Number；The charging communication protocol signals Transmit-Receive Unit 102 is for sending and receiving charging communication protocol signals, the converting unit
103 for realizing the conversion between charging communication protocol signals and PLC signal.
The charging communication protocol signals Transmit-Receive Unit 102 receives the charging communication protocol signals of external equipment input.
The converting unit 103 is used to carry out the charging communication protocol signals, encodes and adjust according to plc communication mode
System converts PLC signal.The PLC signal transmitting and receiving unit 101 is used to for the PLC signal after conversion being sent out to described in support
The external equipment of plc communication agreement.
In the specific embodiment, the communication switching controller 100 is mainly used in vehicle charging system, due to vehicle
End use communication protocol be usually CAN protocol, therefore, in the specific embodiment, the charging communication protocol signals are
CAN signal.The communication switching controller 100 can be realized the transmitting-receiving of CAN signal, the transmitting-receiving of PLC signal and CAN signal with
Conversion between PLC signal.In other specific embodiments, the charging communication protocol can also be other communication protocols,
It can be standard digital communication agreement, or customized digital communication protocol.
Referring to FIG. 2, the application scenarios structural representation of the charging communication control unit for the embodiment of the invention
Figure.
The charging communication control unit includes the communication of stake end switching controller 100a, the Yi Jishe for being set to charging pile end
It is placed in vehicle end communication dress changer controller 100b, the stake end communication switching controller 100a and the communication conversion control of stake end of vehicle end
The specific structure of device 100b processed please refers to the specific structure of the communication switching controller 100 in Fig. 1, and details are not described herein.
The stake end communication switching controller 100a is used to carry out charging communication protocol signals between 201 end of charging pile
Transmission, the vehicle end communication switching controller 100b are used to carry out the transmission of charging communication protocol signals with 202 end of vehicle.The tool
In body embodiment, the charging communication protocol signals are CAN signal, and therefore, the stake end communication switching controller 100a is used
CAN signal transmission is carried out between the charging pile 201, the vehicle end communication switching controller 100b is used for and vehicle 202
Between carry out CAN signal transmission.Specifically, the internal control system of the communication of stake end the switching controller 100a and charging pile 201
It is communicated between system, is carried out between the vehicle end communication switching controller 100b and the battery management system (BMS) of vehicle 202
Communication.
The stake end communication switching controller 100a communicates switching controller 100b with vehicle end in the charging pile 201
It after forming electrical contact with the vehicle 202, is established and is connected to the network by PLC signal, realize that stake end communicates switching controller 100a
The communication between switching controller 100b is communicated with vehicle end, carries out the signal conversion between charging pile 201 and vehicle 202 and is passed
It send.For by the way of the charging that electrode plate docks, it includes filling that the charging pile 201, which forms electrical contact with the vehicle 202,
The decline of the electrode plate of electric stake 201 is contacted with the electrode plate at 202 top of vehicle；For using charging gun charging by the way of, it is described
It includes in the socket of charging gun insertion vehicle 202 of charging pile 201 that charging pile 201 and the vehicle 202, which form electrical contact,.At it
In his specific embodiment, according to the difference of charging modes, the charging pile 201 forms electrical contact with the vehicle 202 and may be used also
To include other modes.Since the transmission of the PLC signal is a kind of transmission of wire signal, cable is depended on, therefore, it is necessary to
It just can be carried out the communication of PLC signal after charging pile 201 and the vehicle 202 form electrical contact.
The stake end communication switching controller 100a and vehicle end communication switching controller 100b are also used to detect the charging
Electrical contact whether is formed between 201 ends of stake and 202 end of the vehicle.
In a specific embodiment, the charging communication control unit further includes detection circuit.The detection circuit
It is set to vehicle 202 or charging pile 201 or the detection circuit part is set to the vehicle end, be partially set to charging
202 ends of stake.It is in electrical contact when between the charging pile 201 and vehicle 202, will lead to the circuit structure hair of the detection circuit
Changing, so that the circuit parameter of the detection circuit changes, the circuit parameter can be suitable for electric current, voltage etc.
In the electrical parameter of detection.
The stake end communication switching controller 100a and vehicle end communication switching controller 100b are also used to monitor the detection
The circuit parameter of circuit；Judge whether the vehicle end and charging pile end form electrical contact according to the circuit parameter.When with not
Contact condition is compared, the obvious variation that the circuit parameter of detection circuit occurs, it can be determined that charging pile 201 and vehicle 202
Between form electrical contact.The design of the detection circuit is it is required that electrical contact front and back, circuit parameter measurement value can be obvious
It distinguishes, to improve the accuracy of detection.
For circuit parameter method above-mentioned, it is easy to by other circuits on the charging cable for being connected to charging pile 201
It influences.In order to avoid the above problem, in another specific embodiment, charging pile can also be judged using signal detecting method
Whether electrical contact is formd between 201 and vehicle 202.Since vehicle end communication switching controller 100b communicates conversion and control with stake end
PLC signal can be only transmitted between device 100a, and the PLC signal is wire transmission signal, depends on power line, therefore, when
Vehicle end communication switching controller 100b communicates the PLC letter that mutual sending is mutually received between switching controller 100a with stake end
Number, so that it may it determines and forms electrical contact between charging pile 201 and vehicle 202.
Specifically, when whether forming electrical contact between detection 201 end of charging pile and 202 end of the vehicle, it is described
For vehicle end communication switching controller 100b for persistently sending PLC detection signal and waiting PLC feedback signal to be received, the stake end is logical
It is anti-to send PLC for the PLC detection signal to be received such as lasting and after receiving PLC detection signal by letter switching controller 100a
Feedback signal to the vehicle end communicates switching controller 100b.Communicate whether switching controller 100a receives institute according to the stake end
It states PLC detection signal and whether vehicle end communication switching controller 100b receives described in the PLC feedback signal judgement
Whether electrical contact is formed between charging pile 201 and the vehicle 202.When the stake end, communication switching controller 100a receives institute
PLC detection signal and vehicle end communication switching controller 100b are stated when receiving the PLC feedback signal, the charging
It is formed and is in electrical contact between stake 201 and the vehicle 202.
It is in the case where multiple charging piles for the charging equipment equipped with multiple charging pole plates, or charging scene
Guarantee vehicle to be charged and the correct matching to inductive charging pole plate prevent the mistake decline of other charging pole plates, the communication of vehicle end
Switching controller needs communicate switching controller with stake end and complete matching, could establish accurately network connection, it is ensured that subsequent logical
The accuracy of the signal transmission line of letter process avoids interfering with each other between different charging piles.
In a specific embodiment, the vehicle end communication switching controller 100b communicates conversion and control with the stake end
Network connection is established by PLC signal between device 100a.The vehicle end communication switching controller 100b is used for logical to the stake end
Believe that switching controller 100a sends PLC probe requests thereby, the stake end communication switching controller 100a is used in idle waiting state
Under the PLC probe requests thereby is responded, and when determining the time-out of detection phase itself according to the PLC probe requests thereby information
Between；The vehicle end communication switching controller 100b is also used in the response for receiving the stake end communication switching controller 100a
Afterwards, the measurement knot to the detectable signal for sending detectable signal, and the stake end communication switching controller 100a being waited to send back to
Fruit；It is required when the measurement result meets matching, then it represents that the stake end communication switching controller 100a communicates conversion with vehicle end
It is mutually matched between controller 100a；The stake end communicates switching controller 100a and communicates switching controller 100b to the vehicle end
Send network connecting request；The stake end communication switching controller 100a is used for after receiving the network connecting request, to
The vehicle end communication switching controller 100b sends network parameter；The vehicle end communication switching controller 100b is used for according to
Network parameter communicates switching controller 100a with the stake end and establishes network connection.
The method for specifically establishing network is described below:
The PLC probe requests thereby is transmitted with PLC signal, and the PLC probe requests thereby further includes subsequent to be sent he
The parameters such as the transmission times Num_sounding and sending cycle TimeInterval_sounding of side signal, the stake end are logical
The state that letter switching controller 100a is presently according to itself, responds request, and according in the PLC probe requests thereby
Transmission times Num_sounding and the parameters such as sending cycle TimeInterval_sounding calculate and determine and next visit
The time-out time in survey stage itself.
In the detection phase, vehicle end communicates switching controller 100b with the sending cycle TimeInterval_sounding
After sending Num_sounding detectable signal for gap periods, the detection for waiting stake end communication switching controller 100a to send back to is believed
Number measurement result.The detection that communication switching controller 100a in stake end is used to be received according to the time-out time or expectation of setting is believed
Number number decides whether to start to calculate the detectable signal received, to obtain measurement result, and result is fed back to vehicle
End communication switching controller 100b.The measurement result either different carrier wave section pad value, be also possible to according to these
Result after the COMPREHENSIVE CALCULATING of pad value.
Measurement result can be using the detection result of all frequency sub-band be calculated, and this method is fairly simple, still
When there is interference in charging environment or when certain frequency sub-band has serious decline will affect calculated result, cause the judgement of mistake with
Pairing, or judgement is caused not pass through, again and pairing is repeated, extends the pairing time.To solve the above-mentioned problems, exist
In another specific embodiment, the detectable signal is carried out calculating the method for obtaining measurement result including: that the stake end communicates
Switching controller 100a decides whether to start to calculate detection according to the detectable signal number that the time-out time or expectation receive
The pad value of signal；When starting to calculate the pad value of detectable signal, interference threshold value and fade margin value are set；For receiving
To detectable signal in be higher than the interference threshold value and rejected lower than the frequency range of the fade margin value, then to residue
Frequency sub-band value calculated.
After vehicle end communication switching controller 100b receives the measurement result that an end communication switching controller 100a is sent back to, pass through
It oneself calculates or is matched using measurement result value to determine whether needing to communicate switching controller 100a with this end.Specifically
Measurement result can be compared by method with preset threshold value.If the measurement result is met the requirements, the communication of vehicle end
Switching controller 100b sends network connecting request, the communication conversion control of stake end to stake end communication switching controller 100a to be paired
Device 100a processed receive request after by network parameter reply to vehicle end communication switching controller 100b.Vehicle end communicates switching controller
100b completes network according to the network parameter received and establishes, and the vehicle end communication switching controller 100b is communicated with the stake end stake
It can communicate between switching controller 100a.
In another specific embodiment, the stake end communication switching controller 100a and vehicle end communicate switching controller
100b is also used in communication process shield abnormal subcarrier, comprising: is used according to PLC signal using the frequency spectrum of region
It is required that the not available subcarrier of shielding；Determine data modulation and subcarrier number according to data transmission rates demands, from
With in the process, optimal subcarrier is selected to carry out data transmission in remaining available subcarrier；According to transmission demand sub-carrier
Power control is carried out, signal power is rationally divided different sub-carrier in the case where guaranteeing that total transmission power does not transfinite
Match.
The stake end communication switching controller 100a communicates switching controller 100b with the vehicle end and is also used to communicating
Heartbeat signal is sent in journey, mutually to confirm the communications status of both sides.When one party can not receive other side within some period
Heartbeat signal then think communication disruption, then be again introduced into electrical contact detection-phase, re-start communication connection.
Particularly, it if there is no variations, such as charging process failure to cause to recharge for information of vehicles, can use
The network information bound before carries out establishing data communication, without the process using pairing, can greatly reduce weight in this way
The interaction time newly connected.
Above-mentioned charging communication control unit can be by the charge cable and electricity in charging process, between charging pile and vehicle
Pole plate completes the communication between charging pile and vehicle end by plc communication, no longer needs to be additionally formed other for realizing charging pile
The communications cable communicated between vehicle end improves the flexibility of charging so as to reduce charging system complexity.
A specific embodiment of the invention also provides a kind of charging communication control method.
Referring to FIG. 3, the flow diagram of the charging communication control method for the embodiment of the invention.
The charging communication control method includes the following steps:
Step S301: whether detection charging pile end and vehicle end form electrical contact.
In a specific embodiment, whether the detection charging pile end and vehicle end form the method packet of electrical contact
It includes: the circuit parameter for the detection circuit for being set to the charging pile end and/or vehicle end is detected, joined according to the circuit
Number judges whether the stake termination electrode plate is in electrical contact with the vehicle termination electrode plate.The electrical contact is charging pile end and vehicle
Charging connection is formed between end, for by the way of the charging that mechanical movement is docked, the charging pile is formed with the vehicle
Electrical contact includes the decline of the electrode plate of charging pile, is contacted with the electrode plate of vehicle roof；For the side using charging gun charging
It includes in the socket of charging gun insertion vehicle of charging pile that formula, the charging pile and the vehicle, which form electrical contact,.In other tools
In body embodiment, according to the difference of charging modes, the charging pile and vehicle formation electrical contact can also include other
Mode.The electrical parameter that the circuit parameter can be adapted to detect for for electric current, voltage etc..
In a specific embodiment, whether the detection charging pile end and vehicle end form the method packet of electrical contact
Include: vehicle end persistently sends PLC detection signal and charging pile end and sends PLC feedback when receiving the PLC detection signal
Signal；Whether receive PLC detection signal according to the charging pile end and the vehicle end whether receive it is described
PLC feedback signal judges whether the charging pile end and the vehicle end form electrical contact.When the stake end communicates conversion and control
Device receives PLC detection signal and when vehicle end communication switching controller receives the PLC feedback signal, institute
It states and forms electrical contact between charging pile and the vehicle.
Step S302: it after detecting formation electrical contact between the charging pile end and vehicle end, is established by PLC signal
Network connection between charging pile end and vehicle end.
Firstly, it is necessary to be matched to charging pile end and vehicle end.The matched method includes: vehicle end to charging institute
It states an end and sends PLC probe requests thereby；The PLC probe requests thereby is responded at the charging pile end, and is detected according to the PLC
Solicited message determines time-out time；Vehicle end sends detectable signal after the response for receiving the charging pile end, and waits institute
State the measurement result to the detectable signal that charging pile end is sent back to；It is required when the measurement result meets matching, then it is assumed that two
Otherwise person's successful match continues above-mentioned matching process.
The PLC probe requests thereby is transmitted with PLC signal, and the PLC probe requests thereby further includes subsequent to be sent he
The parameters such as the transmission times Num_sounding and sending cycle TimeInterval_sounding of side signal.The charging pile
The state being presently according to itself is held, request is responded, and according to the transmission times Num_ in the PLC probe requests thereby
The parameters such as sounding and sending cycle TimeInterval_sounding calculate and determine the super of following detection phase itself
When the time.
Vehicle end is sent Num_sounding times by gap periods of the sending cycle TimeInterval_sounding
After detectable signal, the measurement result for the detectable signal for waiting stake end to send back to.It is received according to the time-out time or expectation of setting at stake end
To detectable signal number decide whether to start to calculate the detectable signal received, to obtain measurement result, and will knot
Fruit feeds back to vehicle end.The measurement result either different carrier wave section pad value, be also possible to according to these pad values
Result after carrying out COMPREHENSIVE CALCULATING.
Measurement result can be using the detection result of all frequency sub-band be calculated, and this method is fairly simple, still
When there is interference in charging environment or when certain frequency sub-band has serious decline will affect calculated result, cause the judgement of mistake with
Pairing, or judgement is caused not pass through, again and pairing is repeated, extends the pairing time.To solve the above-mentioned problems, exist
In another specific embodiment, the calculation method of the measurement result include: the charging pile end according to the time-out time or
The detectable signal number that person's expectation receives decides whether the pad value for starting to calculate detectable signal；When starting to calculate detectable signal
When pad value, interference threshold value and fade margin value are set；It rejects and is higher than the interference door in the detectable signal received
Limit value and frequency range lower than the fade margin value, then calculate remaining frequency sub-band value.
Between vehicle end and charging pile end after successful match, the vehicle end sends network connecting request；The charging pile
After receiving the network connecting request, Xiang Suoshu vehicle end sends network parameter at end；The vehicle end is according to the network
Parameter and the charging pile end, which are established, to be connected to the network.
Step S303: the communication between the charging pile end and the vehicle end is carried out by PLC signal, carries out data biography
It is defeated.It include: that the charging communication protocol signals that the charging pile end and the vehicle end are sent are respectively converted into PLC signal in vehicle
Signal transmission is carried out between end and charging pile end；The vehicle end and the received PLC signal in the charging pile end are respectively converted into
Charge communication protocol signals.
The reliable biography of data may be will affect in the transmission of subsequent data by the frequency sub-band of exceptional value occur in matching stage
It is defeated.Occurring transmission data exception in order to prevent, the reliability of improve data transfer can shield abnormal subcarrier,
The good subcarrier of transmission quality is only chosen to transmit as data.Therefore, the charging pile end is in communication process to abnormal sub- load
Wave is shielded, comprising: shields not available subcarrier using the frequency spectrum requirement of region according to PLC signal；According to data
Transmission rate request determines data modulation and subcarrier number, selects most from available subcarrier remaining in matching process
Excellent subcarrier carries out data transmission；Power control is carried out according to transmission demand sub-carrier, is not surpassed in guarantee total transmission power
Carry out reasonable distribution in the case where limit different sub-carrier between signal power.
In communication process, the charging pile end and the vehicle end can also mutually send heartbeat signal, logical to confirm
Letter state.When the heartbeat signal that one party can not receive other side within some period then thinks communication disruption, then enter herein
It is in electrical contact detection-phase, re-starts communication connection.
Particularly, it if there is no variations, such as charging process failure to cause to recharge for information of vehicles, can use
The network information bound before carries out establishing data communication, without the process using pairing, can greatly reduce weight in this way
The interaction time newly connected.
Referring to FIG. 4, being the charging communication control unit of the embodiment of the invention between charging pile and vehicle
Carry out the communication scheme in charging process.
In the specific embodiment, the charging pile charges to vehicle by electrode plate, during the charging process, stake end
The process communicated with the foundation of vehicle end is as follows:
1, contact detection: Che Duan CPCC (communication switching controller) sends contact detection signal, and stake end CPCC etc. is to be contacted
Detect signal；After CPCC receives communication request (receiving contact detection signal) when stake end, return information is sent, is otherwise held
It is continuous to detect signal until contacting；When vehicle end, CPCC receives return signal, then vehicle end BMS electrode plate is notified to contact successfully, no
It is then lasting to send contact detection signal；Stake end CPCC notice charging pile electrode plate contacts successfully simultaneously.
2, establish network connection: after electrode plate contacts successfully, Che Duan CPCC sends probe requests thereby；End CPCC is according to request for stake
It determines time-out time, and sends the reply confirmation signal of probe requests thereby to vehicle end CPCC；Vehicle end CPCC is receiving reply confirmation
After signal, send multiple detectable signal with some cycles, after stake end CPCC receives detectable signal, judge whether to receive to finish or
Receiving time beyond setting if so, calculating detectable signal, and returns to calculated result to vehicle end CPCC；Che Duan
CPCC carries out signal analysis and judgement according to calculated result, and calculated result meets matching and requires, then sends out to the stake end CPCC of pairing
SCN Space Cable Network connection request；And stake end CPCC is after receiving network connecting request, Xiang Cheduan CPCC sends network parameter, thus double
Fang Jianli network connection, Che Duan CPCC notice BMS can carry out data transmission, and CPCC notice charging pile in stake end can carry out data
Transmission.
3, data are transmitted: CAN data communication are carried out between BMS and vehicle end CPCC, stake end CPCC and charging pile end carry out CAN
Data communication carries out plc data communication between Che Duan CPCC and stake end CPCC.In data transmission procedure, Che Duan CPCC and stake
End CPCC between mutually send heartbeat signal, either one does not receive the heartbeat signal of other side, then continue contact detection with
And subsequent step, re-establish network connection.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (19)
1. a kind of charging communication control unit characterized by comprising
Two communication switching controllers, the communication switching controller includes: PLC signal transmitting and receiving unit, for sending and receiving
PLC signal；Charge communication protocol signals Transmit-Receive Unit, for sending and receiving charging communication protocol signals；Converting unit is used for
Realize the conversion between charging communication protocol signals and PLC signal；
Described two communication switching controllers are respectively arranged at charging pile end and vehicle end, stake end communicate switching controller be used for
Charging pile end carries out the transmission of charging communication protocol signals, and vehicle end communicates switching controller, logical for carrying out charging with vehicle end
Believe the transmission of protocol signal；
Stake end communication switching controller and vehicle end communication switching controller be also used to the charging pile end with it is described
It after vehicle end forms electrical contact, is established and is connected to the network by PLC signal, realized that stake end communication switching controller is communicated with vehicle end and turn
Communication between changer controller.
2. charging communication control unit according to claim 1, which is characterized in that stake end communication switching controller and
Vehicle end communication switching controller is also used to detect between the charging pile end and the vehicle end whether form electrical contact.
3. charging communication control unit according to claim 2, which is characterized in that the charging communication control unit also wraps
Detection circuit is included, the charging pile end and/or vehicle end are set to；Detect between the charging pile end and the vehicle end whether
The method for forming electrical contact includes: the circuit parameter for monitoring the detection circuit；The vehicle is judged according to the circuit parameter
Whether end forms electrical contact with the charging pile end.
4. charging communication control unit according to claim 2, which is characterized in that detect the charging pile end with it is described
When whether forming electrical contact between vehicle end, the vehicle end communication switching controller is for persistently sending PLC detection signal and waiting
PLC feedback signal to be received, the stake end communication switching controller is for the PLC detection signal to be received such as lasting and is receiving
After PLC detects signal, sends PLC feedback signal to the vehicle end and communicate switching controller；Conversion control is communicated according to the stake end
Whether device processed receives the PLC detection signal and whether vehicle end communication switching controller receives the PLC feedback
Signal judges whether form electrical contact between the charging pile end and the vehicle end.
5. charging communication control unit according to claim 1, which is characterized in that the charging pile end and the vehicle end
Between electrical contact formed by stake termination electrode plate and vehicle termination electrode plate.
6. charging communication control unit according to claim 1, which is characterized in that established and be connected to the network by PLC signal
During, the vehicle end communication switching controller is used to send PLC probe requests thereby, institute to stake end communication switching controller
An end communication switching controller is stated for responding under idle waiting state to the PLC probe requests thereby, and according to described
PLC probe requests thereby information determines the time-out time of detection phase itself；The vehicle end communication switching controller is also used to receiving
To after the response of stake end communication switching controller, detectable signal is sent, and waits the stake end communication switching controller hair
The measurement result to the detectable signal returned；It is required when the measurement result meets matching, the vehicle end communicates conversion and control
Device sends network connecting request to stake end communication switching controller；The stake end communication switching controller is for receiving
After the network connecting request, Xiang Suoshu vehicle end communicates switching controller and sends network parameter；The vehicle end communicates conversion and control
Device, which is used to communicate switching controller with the stake end according to the network parameter, establishes network connection.
7. charging communication control unit according to claim 6, which is characterized in that the stake end communication switching controller is also
Measurement result is obtained for calculate to the detectable signal received, calculating is carried out to the detectable signal and is measured
As a result method includes: the detectable signal that the stake end communication switching controller is received according to the time-out time or expectation
Number decides whether the pad value for starting to calculate detectable signal；When starting to calculate the pad value of detectable signal, interference threshold is set
Value and fade margin value；For being higher than the interference threshold value in the detectable signal that receives and lower than the fade margin value
Frequency range is rejected, and is then calculated remaining frequency sub-band value.
8. charging communication control unit according to claim 1, which is characterized in that stake end communication switching controller and
Vehicle end communication switching controller is also used in communication process shield abnormal subcarrier, comprising: is used according to PLC signal
The frequency spectrum requirement of region shields not available subcarrier；Data modulation and son are determined according to data transmission rates demands
Variable number selects optimal subcarrier to carry out data transmission from remaining available subcarrier；It is carried according to transmission demand antithetical phrase
Wave carries out power control, carries out different sub-carrier in the case where guaranteeing that total transmission power does not transfinite between signal power rationally
Distribution.
9. charging communication control unit according to claim 1, which is characterized in that stake end communication switching controller with
The vehicle end communication switching controller is also used to mutually send heartbeat signal in communication process, to confirm communications status.
10. charging communication control unit according to claim 1, which is characterized in that the charging communication protocol signals are
CAN signal.
11. a kind of charging communication control method characterized by comprising
Whether detection charging pile end and vehicle end form electrical contact；
After detecting formation electrical contact between the charging pile end and vehicle end, charging pile end and vehicle are established by PLC signal
End between network connection；
The communication between the charging pile end and the vehicle end is carried out by PLC signal, comprising: by the charging pile end and institute
The charging communication protocol signals for stating vehicle end transmission are respectively converted into PLC signal and carry out signal biography between Che Duanyu charging pile end
It is defeated；The vehicle end and the received PLC signal in the charging pile end are respectively converted into charging communication protocol signals.
12. charging communication control method according to claim 11, which is characterized in that the vehicle end and/or described fill
Electric stake end is formed with detection circuit, and the method whether the detection charging pile end forms electrical contact with vehicle end includes: to described
The circuit parameter of detection circuit is monitored, according to the circuit parameter judge the vehicle end and the charging pile end whether shape
At electrical contact.
13. charging communication control method according to claim 11, which is characterized in that the detection charging pile end and vehicle
The method whether end forms electrical contact include: vehicle end persistently send PLC detection signal and charging pile end receive it is described
PLC sends PLC feedback signal when detecting signal；The PLC detection signal, Yi Jisuo whether are received according to the charging pile end
It states vehicle end and whether receives that the PLC feedback signal judges the charging pile end and whether the vehicle end forms electrical contact.
14. charging communication control method according to claim 11, which is characterized in that the charging pile end and the vehicle
Electrical contact is formed by stake termination electrode plate and vehicle termination electrode plate between end.
15. charging communication control method according to claim 11, which is characterized in that described to be filled by the foundation of PLC signal
The method of network connection between electric stake end and vehicle end, which includes: vehicle end, sends PLC probe requests thereby to the charging pile end；Institute
It states charging pile end to respond the PLC probe requests thereby, and time-out time is determined according to the PLC probe requests thereby information；Vehicle
End sends detectable signal after the response for receiving the charging pile end, and wait that the charging pile end sends back to described
The measurement result of detectable signal；It is required when the measurement result meets matching, the vehicle end sends network connecting request；It is described
After receiving the network connecting request, Xiang Suoshu vehicle end sends network parameter at charging pile end；The vehicle end is according to institute
It states network parameter and the charging pile end is established and is connected to the network.
16. charging communication control method according to claim 15, which is characterized in that the calculation method of the measurement result
It include: that the charging pile end decides whether to start to calculate to visit according to the detectable signal number that the time-out time or expectation receive
Survey the pad value of signal；When starting to calculate the pad value of detectable signal, interference threshold value and fade margin value are set；Rejecting connects
It is higher than the interference threshold value and the frequency range lower than the fade margin value in the detectable signal received, then to remaining
Frequency sub-band value is calculated.
17. charging communication control method according to claim 11, which is characterized in that further include: the charging pile end exists
Abnormal subcarrier is shielded in communication process, comprising: can not using the frequency spectrum requirement shielding of region according to PLC signal
Subcarrier；Data modulation and subcarrier number are determined according to data transmission rates demands, from remaining available sub- load
Optimal subcarrier is selected to carry out data transmission in wave；Power control is carried out according to transmission demand sub-carrier, is guaranteeing total hair
Reasonable distribution is carried out different sub-carrier between signal power in the case where penetrating power and not transfiniting.
18. charging communication control method according to claim 11, which is characterized in that further include: in communication process, institute
It states charging pile end and the vehicle end mutually sends heartbeat signal, to confirm communications status.
19. charging communication control method according to claim 11, which is characterized in that the charging communication protocol signals are
CAN signal.
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