CN110182092B - Method for realizing communication protocol of intelligent charging pile - Google Patents
Method for realizing communication protocol of intelligent charging pile Download PDFInfo
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- CN110182092B CN110182092B CN201910342388.6A CN201910342388A CN110182092B CN 110182092 B CN110182092 B CN 110182092B CN 201910342388 A CN201910342388 A CN 201910342388A CN 110182092 B CN110182092 B CN 110182092B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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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
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- 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
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/20—Information technology specific aspects, e.g. CAD, simulation, modelling, system security
Abstract
The invention discloses a method for realizing an intelligent charging pile communication protocol, wherein the charging pile communication protocol comprises a bearing layer, an access layer and an application layer, the bearing layer is a communication link layer, the access layer is used for defining a communication transmission channel, and the application layer is used for bearing a protocol message packet; the protocol message packet is used for realizing communication between the charging pile and the server, the charging pile is communicated with the server for realizing a charging service request of the charging pile, and the charging service request comprises registration of the charging pile or legality authentication of login, charging starting, charging stopping and bill uploading after charging stopping, card swiping authentication and deduction, link maintenance, equipment state and alarm reporting, software updating and remote control operation. According to the invention, the software and hardware communication protocol of the charging pile is defined, so that the charging pile and the software platform are in data communication, thereby realizing the intellectualization of the charging pile and facilitating the management and monitoring of the whole operation of the charging pile service.
Description
Technical Field
The invention relates to the field of charging piles, in particular to a method for realizing a communication protocol of an intelligent charging pile.
Background
Under the support of high-speed development and policy support of new energy automobiles, the electric automobile charging facility industry in China is rapidly developed, the technology is continuously improved and upgraded, and a user also puts higher requirements on the service level and the intellectualization of the charging facility.
In addition, the conventional management station equipment using a manual inspection mode has the following defects: problems can not be found in time, or the efficiency is low, the response is slow, the number of stations is large, and the labor cost is high; the operation and maintenance process is opaque and has no informatization, difficult statistical analysis, and is not beneficial to management and the like.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method for realizing an intelligent charging pile communication protocol, which comprises the following steps:
the invention provides a method for realizing an intelligent charging pile communication protocol, wherein the charging pile communication protocol comprises a bearing layer, an access layer and an application layer, the bearing layer is a communication link layer, the access layer is used for defining a channel of communication transmission, and the application layer is used for bearing a protocol message packet;
the protocol message packet is used for realizing communication between the charging pile and the server, the charging pile is communicated with the server for realizing a charging service request of the charging pile, and the charging service request comprises registration of the charging pile or legality authentication of login, charging starting, charging stopping and bill uploading after charging stopping, card swiping authentication and deduction, link maintenance, equipment state and alarm reporting, software updating and remote control operation.
Further, the method for realizing registration or login of the charging pile by using the charging pile communication protocol comprises the following steps:
after the charging pile is powered on and started, the charging pile actively establishes communication link connection with a server and sends a registration request or a login request to the server, wherein the registration request or the login request comprises an equipment serial number of the charging pile and a variable secret key; the equipment serial number is unique and is fixed and unchangeable in the life cycle of the charging pile, is generated by the server, and is solidified in the charging pile before the charging pile leaves a factory; wherein the variable secret key can be changed irregularly according to a convention mode;
the server verifies the equipment serial number and the secret key, if the equipment serial number and the secret key pass the verification, an electric pile coding address is distributed to the charging pile, and the registration or login of the charging pile is completed; other communications are possible only after successful registration or login, and other communication message packets include the encoded address of the electrical pile.
Further, the method for realizing the charging starting of the charging pile by the charging pile communication protocol comprises a charging pile side active charging starting mode and a server side active charging starting mode, wherein in the charging pile side active charging starting mode, a charging starting request is started to a server by the charging pile, then a charging response message corresponding to the charging starting request message is replied to the charging pile by the server, and after the charging pile receives the response message successfully, the charging operation is started; and under the active charging initiating mode of the server side, firstly, initiating a charging starting instruction message to the charging pile by the server, and then, actively initiating the starting process of the charging pile side.
Furthermore, the method for realizing the charging stop of the charging pile by the charging pile communication protocol comprises a charging pile side active starting stop mode and a server side active starting stop mode,
under the active starting stop mode at the charging pile side, firstly, a charging stop request message is sent to a server by a charging pile, then, a charging stop response message corresponding to the charging stop request message is replied to the charging pile by the server, and the charging pile can stop charging operation without waiting for the server to reply the charging stop response message;
under the condition that a server side actively initiates a stop mode, firstly, a charging stop instruction message is initiated to a charging pile by the server; the subsequent process is the same as the process in the active starting stop mode of the charging pile side;
in the charging pile side active initiation stop mode and the server side active initiation stop mode, the charging pile sends a charging stop request message to the server, wherein the charging stop request message contains the bill information for settling the charging fee.
Further, the billing message may include the charging amount and charging fee details of different time periods, and the total charging amount and fee information, wherein the minimum unit of the time period is minutes, and the time period can be arbitrarily set.
Further, if the charging pile does not receive a reply message of the server after initiating the charging stopping instruction, initiating a charging stopping request message to the server again after a plurality of time intervals until the server replies successfully; if the charging pile cannot retransmit the charging stop request message due to the reasons of link disconnection or power failure and the like before the server successfully replies, the charging stop request message is continuously generated after the link is recovered or electrified and is registered or logged successfully until the server successfully replies, otherwise, the charging pile does not accept the next charging service request.
Further, the communication method for realizing card swiping payment of the charging pile by the charging pile communication protocol comprises an electronic wallet card payment mode and an ID card payment mode:
for the payment mode of the electronic wallet card, a server receives a card swiping request message sent by a charging pile, wherein the card swiping request message comprises information such as a card number and balance; the server carries out validity identification according to the card swiping request and returns a card swiping reply message to the charging pile, wherein the card swiping reply message comprises a card validity identification result and arrearage information of the card;
if the card swiping reply message shows that the card arrearages are due, the charging pile executes money deduction operation on the card according to the arrearages information, and sends a money deduction success request message to the server after money deduction; the server replies a charging pile deduction response message after eliminating the arrearage information of the electronic wallet card in the server according to the deduction success request message; if the charging pile does not receive the deduction response message, continuously and repeatedly sending a deduction success request message until the server responds successfully;
for the ID card payment mode, the server receives a card swiping request message sent by the charging pile, only authenticates the contained card number, returns a card swiping request message response to the charging pile, and can open the charging service after the charging pile receives the message of successful authentication.
Further, the communication method for realizing the software updating operation of the charging pile by the charging pile communication protocol comprises the following steps: the software package data is transmitted in a protocol specified message format, and is directly transmitted to the charging pile by the server in a mode of dividing the software package into a plurality of data packages with preset sizes, wherein the method comprises the following steps:
step 1: the server sends a software updating instruction message to the charging pile, wherein the message contains information such as the version number of the software updating package, the number of the software updating package and the like;
step 2: the charging pile returns a response message of the software updating message to the server;
and 3, step 3: the charging pile sequentially requests a server to acquire an nth package of updating data according to the software version number received in the step 1, wherein n is sequentially increased from the 1 st package until the last package of updating data;
and 4, step 4: the server sends the nth package of updating data corresponding to the version number to the charging pile according to the updating data request sent by the charging pile in the step 3;
and 5, step 5: and repeating the steps 3 and 4 until the last packet of data is received, carrying out integrity check on all data by the charging pile, updating the software if the integrity check is successful, and repeatedly executing the steps 3 to 5 if the integrity check is failed.
Further, the charging pile communication protocol uses heartbeat messages to maintain a data communication link, if the charging pile is in a charging state, the heartbeat messages contain bill information, and when the link is abnormal, the server can perform bill settlement according to the heartbeat messages.
Furthermore, when the server controls and checks the state of the charging pile, the server also comprises a custom instruction besides a fixed setting and query instruction, when the custom instruction is used, the server packages the data content of the custom instruction input by a user according to a protocol format and then sends the data content to the charging pile, the charging pile automatically analyzes and executes the data content, reply data is packaged in a custom data segment according to the protocol format and then sends the custom data segment to the server, and the server detects the self-defined data segment in the reply message and displays the custom data segment to the user.
The technical scheme provided by the invention has the following beneficial effects:
a. the communication protocol is convenient for the software platform to analyze and process the data of the charging pile after acquiring, so that the health state of the charging pile is comprehensively detected, and the overall operation of the charging pile service is monitored and managed;
b. the communication middleware uses a Netty framework, has a uniform API, is suitable for blocking and non-blocking communication, and is based on a flexible and extensible event-driven model, a highly customizable thread model and reliable connectionless data Socket support (UDP);
c. the method has better throughput performance, low delay and more resource saving;
d. the problem of inconsistent NIO read-write frequency in a high-speed network environment is avoided because of the outOfMemoryError caused by over-fast, over-slow or over-load connection.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a message interaction flow diagram of an intelligent charging pile communication protocol implementing registration/login according to an embodiment of the present invention;
fig. 2 is a message interaction flow chart of an intelligent charging pile communication protocol implementing charging start according to an embodiment of the present invention;
fig. 3 is a message interaction flowchart of stopping charging implemented by the intelligent charging pile communication protocol according to the embodiment of the present invention;
fig. 4 is a message interaction flow chart of card swiping implemented by the intelligent charging pile communication protocol according to the embodiment of the present invention;
fig. 5 is a message interaction flowchart for implementing update of the intelligent charging pile communication protocol according to the embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
In an embodiment of the present invention, a method for implementing an intelligent charging pile communication protocol is provided, where the charging pile communication protocol includes a bearer layer, an access layer, and an application layer, where the bearer layer is an actual link for communication, and may select a transport protocol such as MQTT as a bearer protocol frame to designate a TCP connection port and a UDP port of a server; the access layer defines a channel for communication transmission and related requirements; the application layer bears an application layer protocol message packet, and data organization facing to the monitoring function is realized aiming at various functions such as state monitoring alarm setting and the like. The protocol is a description of access stratum and application layer data. The protocol access layer protocol packet is composed of a starting mark, a data unit, a check unit and an ending mark 4. Wherein, the data unit part is application layer data and is encrypted.
The protocol message packet is used for realizing communication between the charging pile and the server, the charging pile and the server are communicated for realizing a charging service request of the charging pile, and the charging service request comprises registration of the charging pile or legality authentication of login, charging starting, charging stopping and bill uploading after charging stopping, card swiping authentication and deduction, link maintenance, equipment state and alarm reporting, software updating and remote control operation, and the following description is made on each operation one by one.
Referring to fig. 1, the method for implementing registration or login of the charging pile by using the charging pile communication protocol includes:
after the charging pile is powered on and started, the charging pile actively establishes communication link connection with a server and sends a registration request or a login request to the server, wherein the registration request or the login request comprises an equipment serial number of the charging pile and a variable secret key; the equipment serial number is unique and is fixed and unchangeable in the life cycle of the charging pile, is generated by the server, and is solidified in the charging pile before the charging pile leaves a factory; wherein the variable secret key can be changed irregularly according to a convention mode;
the server verifies the equipment serial number and the secret key, if the equipment serial number and the secret key pass the verification, an electric pile coding address is distributed to the charging pile, and the registration or login of the charging pile is completed; other communications are possible only after successful registration or login, and other communication message packets include the encoded address of the electrical pile.
The method specifically comprises the following steps:
after the charging pile is powered on and started, a server receives a registration request or a login request sent by the charging pile, wherein the registration request or the login request comprises an equipment serial number of the charging pile;
the server verifies the equipment serial number, if the equipment serial number passes the verification, an electric pile coding address is distributed to the charging pile, and the registration or login of the charging pile is completed;
on the premise of completing registration or login of the charging pile, communication of charging operation, card swiping payment and/or updating operation can be performed between the charging pile and the server, and message packets in the communication all include the electric pile coded address.
Specifically, the electric pile device first performs registration login each time it is powered up again. The electric pile contains the unique serial number of the equipment in the registration message, the server verifies the validity of the serial number after receiving the message, and if the verification is passed, the global unique electric pile code is distributed to the charging pile. And under the condition that the electric pile does not receive the normal message response, the electric pile needs to regularly send the registration login message all the time until the server normally responds, otherwise, the electric pile cannot provide the service. The difference between the registration and the login is that in the registration protocol, the operator number in the message header is 0x000x00, the electric pile codes as the SN number of the electric pile, and the operator number and the electric pile number in the message header in the registration protocol are the content returned by the registration protocol server.
The charging pile AC/DC type, the charging gun number, a manufacturer code, a charging pile software version, a communication protocol version and a secret key are defined in the protocol.
Further, the charging operation includes charging start, referring to fig. 2, according to a technical scheme, a charging pile actively initiates charging start and uploads an instruction, a server receives and returns a message (above a dotted line in fig. 2), in a charging pile side actively initiating charging mode, a charging start request is initiated to the server by the charging pile, then a charging response message corresponding to the charging start request message is replied to the charging pile by the server, and after the charging pile receives the response message successfully, the charging operation is started. The method specifically comprises the following steps:
the charging pile actively initiates a charging starting request message to the server;
the server replies a charging response message corresponding to the charging starting request message to the charging pile;
and the charging pile starts charging operation according to the charging response message.
The other technical scheme is that a server initiates charging starting, issues an instruction, a charging pile receives, executes and returns a message (below a dotted line in fig. 2), and in a charging mode initiated by the server side, the server initiates a charging starting instruction message to the charging pile, and then the process is the same as the process of the charging pile side initiated by the charging pile side. The method specifically comprises the following steps:
initiating a charging starting instruction message to the charging pile by the server;
the charging pile initiates a charging starting request message to a server according to the charging starting instruction message;
the server replies a charging response message corresponding to the charging request message to the charging pile;
and the charging pile starts charging operation according to the charging response message.
The protocol defines gun number, starting mode, starting state, charging mode, timing charging, delay charging, order number, data, last charging electric quantity and last charging time.
Further, the charging operation further includes stopping charging, referring to fig. 2, in a technical scheme that a charging pile actively initiates stopping charging and uploads an instruction, a server receives and returns a message (above a dotted line in fig. 3), in a mode that a charging pile side actively initiates stopping, a charging pile sends a charging stopping request message to the server, then the server replies a charging stopping response message corresponding to the charging stopping request message to the charging pile, and the charging pile can stop charging operation without waiting for the server to reply the charging stopping response message. The method specifically comprises the following steps:
the charging method comprises the steps that a charging stopping request message is actively sent to a server by a charging pile, wherein the charging stopping request message comprises a bill message used for settling charging fees;
the server replies a charging stopping response message corresponding to the charging stopping request message to the charging pile;
and the charging pile stops charging operation according to the charging stopping response message.
The other technical scheme is that a server initiates charging stop, issues an instruction, a charging pile receives, executes and returns a message (below a dotted line in fig. 3), and the server initiates a charging stop instruction message to the charging pile in an active server side stopping mode; the process is the same as the process in the active start stop mode of the charging pile side. The method specifically comprises the following steps:
a server initiates a charging stopping instruction message to a charging pile;
the charging pile initiates a charging stopping request message to the server according to the charging stopping instruction message, wherein the charging stopping request message comprises a bill message for settling charging fee, and preferably adopts a time-interval charging mode, namely charging fee details calculated according to the charging starting and stopping time and a corresponding time-interval charging standard;
the server replies a charging stopping response message corresponding to the charging request message to the charging pile;
and the charging pile stops charging operation according to the charging stopping response message.
The protocol defines the charging electric quantity, the charging amount, the payment mode, the stop reason, the charging starting time, the charging ending time, the service fee type, the service fee amount, the charging detail, the start and stop codes of the alternating current meter and the start and stop codes of the direct current meter. The charging details comprise the number of time-sharing charging sections and corresponding starting time, ending time, electric quantity and money amount, and are shown in the following table:
| meaning of a field | Type of field | Length of | Description of the invention |
| Time-sharing charging segment number | byte | 1 | Time sharing charging stage number (not including default stage) |
| Electric quantity | byte(*) | 4 | Default charging capacity |
| Amount of money | byte(*) | 4 | Charging fee unit of 0.01 yuan for default section |
| Start time (segment 1-N) | byte(*) | 2 | Unit: time division |
| End time (segment 1-N) | byte(*) | 2 | Unit: time division |
| Electric quantity (segment 1-N) | byte(*) | 4 | Unit 0.01 degree |
| Amount (section 1-N) | byte(*) | 4 | Unit 0.01 yuan |
From the above, whether the charging pile side actively initiates the stop mode or the server side actively initiates the stop mode, the charging pile sends the stop charging request message to the server, which includes the billing information for settling the charging fee, and the billing message may include the charging electric quantity and the charging fee details in different time periods, and the total charging electric quantity and the fee information, wherein the minimum unit of the time period is minutes, and the time period may be set arbitrarily.
Further, if the charging pile does not receive a reply message of the server after initiating the charging stopping instruction, initiating a charging stopping request message to the server again after a plurality of time intervals until the server replies successfully; if the charging pile cannot retransmit the charging stop request message due to the reasons of link disconnection or power failure and the like before the server successfully replies, the charging stop request message is continuously generated after the link is recovered or electrified and is registered or logged successfully until the server successfully replies, otherwise, the charging pile does not accept the next charging service request.
Further, the communication method for realizing card swiping payment of the charging pile by the charging pile communication protocol comprises an electronic wallet card payment mode and an ID card payment mode:
for the payment mode of the electronic wallet card, a server receives a card swiping request message sent by a charging pile, wherein the card swiping request message comprises information such as a card number and balance; the server carries out validity identification according to the card swiping request and returns a card swiping reply message to the charging pile, wherein the card swiping reply message comprises a card validity identification result and arrearage information of the card;
if the card swiping reply message shows that the card arrearages are due, the charging pile executes money deduction operation on the card according to the arrearages information, and sends a money deduction success request message to the server after money deduction; the server replies a charging pile deduction response message after eliminating the arrearage information of the electronic wallet card in the server according to the deduction success request message; if the charging pile does not receive the deduction response message, continuously and repeatedly sending a deduction success request message until the server responds successfully;
for the ID card payment mode, the server receives a card swiping request message sent by the charging pile, only authenticates the contained card number, returns a card swiping request message response to the charging pile, and can open the charging service after the charging pile receives the message of successful authentication. As shown in fig. 4, the method includes the following steps:
the method comprises the steps that a server receives a card swiping request message sent by a charging pile, wherein the card swiping request message comprises card number information;
the server returns a card swiping reply message to the charging pile according to the card swiping request, wherein the card swiping reply message comprises arrearage information of the card;
if the card swiping reply message shows card arrearage, the server receives a deduction request message sent by the charging pile;
the server returns a deduction reply message to the charging pile according to the deduction request message;
and completing the money deduction operation according to the money deduction reply message.
Specifically, after the electric pile receives the card swiping, the card number is reported to the server at first, and the server returns whether the card is arrearage or not.
And if the server returns the arrearage after the card is swiped and reported, the electric pile firstly carries out fee deduction operation, and the fee is reported to the server after the fee deduction is successful. Here it is distinguished whether the card type is an electronic wallet or an ID card, which has no money to deduct fees from the software platform.
The card number, balance, amount to be deducted (e-wallet), order number and order structure are defined in the protocol.
Further, the communication method of the update operation is that the server issues an update file, the charging pile receives, executes, and returns a message, the software package data is transmitted in a message format specified by a protocol, and the software package is directly transmitted to the charging pile by the server in a manner of dividing the software package into a plurality of data packages of a preset size, as shown in fig. 5, and the method includes the following processes:
step 1: the server sends a software updating instruction message to the charging pile, wherein the message contains information such as the version number of the software updating package, the number of the software updating package and the like;
step 2: the charging pile returns a response message of the software updating message to the server;
and 3, step 3: the charging pile sequentially requests a server to acquire an nth package of updating data according to the software version number received in the step 1, wherein n is sequentially increased from the 1 st package until the last package of updating data;
and 4, step 4: the server sends the nth package of updating data corresponding to the version number to the charging pile according to the updating data request sent by the charging pile in the step 3;
and 5, step 5: and repeating the steps 3 and 4 until the last packet of data is received, carrying out integrity check on all data by the charging pile, updating the software if the integrity check is successful, and repeatedly executing the steps 3 to 5 if the integrity check is failed.
The protocol defines an update flag, a software version number, a total packet number, a current packet sequence number, and data.
In the embodiment of the invention, the charging pile communication protocol uses heartbeat messages to maintain a data communication link, if the charging pile is in a charging state, the heartbeat messages contain bill information, and when the link is abnormal, the server can perform bill settlement according to the heartbeat messages.
When the server implements control and checks states on the charging pile, the server also comprises a custom instruction besides fixed setting and query instructions, when the custom instruction is used, the server packages custom instruction data content input by a user according to a protocol format and then sends the custom instruction data content to the charging pile, the charging pile automatically analyzes and executes the custom instruction data content, reply data are packaged in a custom data segment according to the protocol format and then sent to the server, and the server detects a self-defined data segment in a reply message and displays the self-defined data segment to the user.
In the embodiment of the invention, the communication between the electric pile and the server adopts a question-and-answer mode (except for a re-registration request), and the responder replies to the initiator in a blank filling mode. The responder needs to perform validity check such as CRC (cyclic redundancy check) on the message packet, and then makes a corresponding response after judging the valid message. The command word of the response is the same as the initiator, and indicates only at the response flag whether the response was successful or not. The responder only makes one response without repeatedly sending the packet.
To ensure delivery of the message, if the message sender does not receive the message response, the message sender needs to resend the message after a certain time interval until a message response is received. If the importance level of the sent subsequent message is higher than that of the currently retransmitted message, the message with the high importance level and the retransmitted message thereof are sent firstly.
The retransmission interval is set, preferably between 1s and 30s, and is freely selected depending on the importance of the message, but not more than 2 minutes at the longest.
If the message is retransmitted for several times without receiving the response message, the device can be determined to be offline. The equipment and the server perform corresponding processing, wherein the equipment which is initiated by the server and is in charging needs to be closed after the electric pile is offline, and the charging pile for card swiping settlement can continue to be charged or be closed according to the needs.
According to the invention, the software and hardware communication protocol of the charging pile is defined, so that the charging pile and the software platform are in data communication, thereby realizing the intellectualization of the charging pile and facilitating the management and monitoring of the whole operation of the charging pile service.
The communication protocol is convenient for the software platform to analyze and process the data acquisition and post-processing of the charging pile, so that the health state of the charging pile is comprehensively detected, and the whole operation of the charging pile service is monitored and managed.
The communication middleware uses a Netty framework, has a uniform API, is suitable for blocking and non-blocking communication, and is based on a flexible and extensible event-driven model, a highly customizable thread model and reliable connectionless data Socket support (UDP). And has better throughput performance, low delay and more resource saving. The problem of inconsistent NIO read-write frequency in a high-speed network environment is avoided because of the outOfMemoryError caused by over-fast, over-slow or over-load connection.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The method for realizing the communication protocol of the intelligent charging pile is characterized in that the communication protocol of the charging pile comprises a bearing layer, an access layer and an application layer, wherein the bearing layer is a communication link layer, the access layer is used for defining a channel of communication transmission, and the application layer is used for bearing a protocol message packet;
the protocol message packet is used for realizing communication between a charging pile and a server, the charging pile is communicated with the server and used for realizing a charging service request of the charging pile, and the charging service request comprises registration of the charging pile or legality authentication of login, charging starting, charging stopping and bill uploading after charging stopping, card swiping authentication and deduction, link maintenance, equipment state and alarm reporting, software updating and remote control operation;
the method for realizing the registration or login of the charging pile by the charging pile communication protocol comprises the following steps: after the charging pile is powered on and started, the charging pile actively establishes communication link connection with a server and sends a registration request or a login request to the server, wherein the registration request or the login request comprises an equipment serial number of the charging pile and a variable secret key; the equipment serial number is unique and is fixed and unchangeable in the life cycle of the charging pile, is generated by the server, and is solidified in the charging pile before the charging pile leaves a factory; wherein the variable secret key can be changed irregularly according to a convention mode; the server verifies the equipment serial number and the secret key, if the equipment serial number and the secret key pass the verification, an electric pile coding address is distributed to the charging pile, and the registration or login of the charging pile is completed; only after the registration or login is successful, other communication is possible, and other communication message packets all contain the electric pile coding address;
the method for realizing the charging starting of the charging pile by the charging pile communication protocol comprises a charging pile side active initiating charging mode and a server side active initiating charging mode, wherein in the charging pile side active initiating charging mode, a charging starting request is initiated to the server by the charging pile, then a charging response message corresponding to the charging starting request message is replied to the charging pile by the server, and after the charging pile receives the response message successfully, the charging operation is started; under the mode that the server side actively initiates charging, firstly, the server initiates a charging starting instruction message to the charging pile, and then the process is the same as the process that the charging pile side actively initiates starting;
the method for realizing the charging stop of the charging pile by the charging pile communication protocol comprises the steps that a charging pile side actively initiates a stop mode and a server side actively initiates the stop mode: under the active starting stop mode at the charging pile side, firstly, a charging stop request message is sent to a server by a charging pile, then, a charging stop response message corresponding to the charging stop request message is replied to the charging pile by the server, and the charging pile can stop charging operation without waiting for the server to reply the charging stop response message; under the condition that a server side actively initiates a stop mode, firstly, a charging stop instruction message is initiated to a charging pile by the server; the subsequent process is the same as the process in the active starting stop mode of the charging pile side; under the charging pile side active initiation stop mode and the server side active initiation stop mode, the charging pile sends a charging stop request message to the server, wherein the charging stop request message comprises bill information for settling charging cost;
if the charging pile does not receive a reply message of the server after initiating a charging stopping instruction, initiating a charging stopping request message to the server again after a plurality of time intervals until the server replies successfully; if the charging pile cannot retransmit the charging stopping request message due to the disconnection or power failure of the link before the server successfully replies, the charging stopping request message is continuously sent after the link is recovered or electrified again and the registration or login is successful until the server successfully replies, otherwise, the charging pile does not accept the next charging service request;
the charging pile communication protocol maintains a data communication link by using heartbeat messages, if the charging pile is in a charging state, the heartbeat messages contain bill information, and when the link is abnormal, the server can perform bill settlement according to the heartbeat messages;
when the server implements control and checks states on the charging pile, the server also comprises a custom instruction besides fixed setting and query instructions, when the custom instruction is used, the server packages custom instruction data content input by a user according to a protocol format and then sends the custom instruction data content to the charging pile, the charging pile automatically analyzes and executes the custom instruction data content, reply data are packaged in a custom data segment according to the protocol format and then sent to the server, and the server detects a self-defined data segment in a reply message and displays the self-defined data segment to the user.
2. The method of claim 1, wherein the billing information includes charging capacity and charging fee details for different time periods, and total charging capacity and fee information, wherein the minimum unit of the time period is minutes, and the time period can be arbitrarily set.
3. The method for implementing the communication protocol of the intelligent charging pile according to claim 1, wherein the communication method for implementing card swiping authentication and deduction of the charging pile by the communication protocol of the charging pile comprises an electronic wallet card payment mode and an ID card payment mode:
for the payment mode of the electronic wallet card, a server receives a card swiping request message sent by a charging pile, wherein the card swiping request message comprises a card number and balance information; the server carries out validity identification according to the card swiping request and returns a card swiping reply message to the charging pile, wherein the card swiping reply message comprises a card validity identification result and arrearage information of the card;
if the card arrearage is displayed by the card swiping reply message, the charging pile executes money deduction operation on the card according to the arrearage information, and sends a money deduction success request message to the server after money deduction; the server replies a charging pile deduction response message after eliminating the arrearage information of the electronic wallet card in the server according to the deduction success request message; if the charging pile does not receive the deduction response message, continuously and repeatedly sending a deduction success request message until the server responds successfully;
for the ID card payment mode, the server receives a card swiping request message sent by the charging pile, only authenticates the contained card number, returns a card swiping request message response to the charging pile, and can open the charging service after the charging pile receives the message of successful authentication.
4. The method for implementing the intelligent charging pile communication protocol according to claim 1, wherein the method for implementing the communication of the software updating operation of the charging pile by using the charging pile communication protocol comprises the following steps: the software package data is transmitted in a protocol specified message format, and is directly transmitted to the charging pile by the server in a mode of dividing the software package into a plurality of data packages with preset sizes, wherein the method comprises the following steps:
step 1: the server sends a software updating instruction message to the charging pile, wherein the message contains the version number of the software updating package and the package number information of the software updating package;
step 2: the charging pile returns a response message of the software updating message to the server;
and 3, step 3: the charging pile sequentially requests a server to acquire an nth package of updating data according to the software version number received in the step 1, wherein n is sequentially increased from the 1 st package until the last package of updating data;
and 4, step 4: the server sends the nth package of updating data corresponding to the version number to the charging pile according to the updating data request sent by the charging pile in the step 3;
and 5, step 5: and repeating the steps 3 and 4 until the last packet of data is received, carrying out integrity check on all data by the charging pile, updating the software if the integrity check is successful, and repeatedly executing the steps 3 to 5 if the integrity check is failed.
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| CN201910342388.6A CN110182092B (en) | 2019-04-26 | 2019-04-26 | Method for realizing communication protocol of intelligent charging pile |
| CN202110124081.6A CN112895964B (en) | 2019-04-26 | 2019-04-26 | Charging fee settlement method based on charging pile communication protocol |
| CN202110173550.3A CN112937354B (en) | 2019-04-26 | 2019-04-26 | Charging pile software updating implementation method based on charging pile communication protocol |
| CN202110186936.8A CN112895965B (en) | 2019-04-26 | 2019-04-26 | Implementation method of intelligent charging pile active initiation type charging pile communication protocol |
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| CN201910342388.6A CN110182092B (en) | 2019-04-26 | 2019-04-26 | Method for realizing communication protocol of intelligent charging pile |
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| CN202110173550.3A Division CN112937354B (en) | 2019-04-26 | 2019-04-26 | Charging pile software updating implementation method based on charging pile communication protocol |
| CN202110124081.6A Division CN112895964B (en) | 2019-04-26 | 2019-04-26 | Charging fee settlement method based on charging pile communication protocol |
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| CN201910342388.6A Active CN110182092B (en) | 2019-04-26 | 2019-04-26 | Method for realizing communication protocol of intelligent charging pile |
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| CN112895965B (en) | 2024-01-05 |
| CN112937354B (en) | 2024-01-02 |
| CN112937354A (en) | 2021-06-11 |
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