CN111290304A - Charging system evidence data acquisition platform between electric automobile and charging pile - Google Patents

Charging system evidence data acquisition platform between electric automobile and charging pile Download PDF

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Publication number
CN111290304A
CN111290304A CN202010168160.2A CN202010168160A CN111290304A CN 111290304 A CN111290304 A CN 111290304A CN 202010168160 A CN202010168160 A CN 202010168160A CN 111290304 A CN111290304 A CN 111290304A
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CN
China
Prior art keywords
signal
charging
voltage
data acquisition
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010168160.2A
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Chinese (zh)
Inventor
钱勇生
张璐
虞文惠
瞿亚成
刘耿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Electrical Equipment Testing Co ltd
Shanghai Tilva Certification Technology Co ltd
Shanghai Electrical Apparatus Research Institute Group Co Ltd
Original Assignee
Shanghai Electrical Equipment Testing Co ltd
Shanghai Tilva Certification Technology Co ltd
Shanghai Electrical Apparatus Research Institute Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Electrical Equipment Testing Co ltd, Shanghai Tilva Certification Technology Co ltd, Shanghai Electrical Apparatus Research Institute Group Co Ltd filed Critical Shanghai Electrical Equipment Testing Co ltd
Priority to CN202010168160.2A priority Critical patent/CN111290304A/en
Publication of CN111290304A publication Critical patent/CN111290304A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00Electric signal transmission systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/12Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L2012/40208Bus networks characterized by the use of a particular bus standard
    • H04L2012/40215Controller Area Network CAN
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L2012/40267Bus for use in transportation systems
    • H04L2012/40273Bus for use in transportation systems the transportation system being a vehicle

Abstract

The invention provides a charging system evidence data acquisition platform between an electric automobile and a charging pile, which is characterized in that: the signal processing and analyzing layer is used for displaying, analyzing and storing the acquired signals; the signal physical sampling layer is used for acquiring a voltage signal and a current signal of the charging system; the signal conditioning layer is used for conditioning the acquired voltage signal and current signal and transmitting the conditioned voltage signal and current signal to the signal recording layer; and the signal recording layer is used for recording the acquired signals and transmitting the signals to the signal processing and analyzing layer through the signal transmission layer. The charging system evidence data acquisition platform between the electric automobile and the charging pile can be simultaneously connected with a plurality of vehicle pile charging systems to realize evidence data acquisition of the plurality of charging systems, sends instructions through the Ethernet to acquire, store and analyze acquired data, and finally presents acquisition diversification, data imaging and analysis intellectualization of the charging systems.

Description

Charging system evidence data acquisition platform between electric automobile and charging pile
Technical Field
The invention relates to a charging system evidence data acquisition platform between an electric automobile and a charging pile.
Background
Aiming at the problems that the pollution of the exhaust emission of the traditional fuel oil automobile to the natural environment is serious, and the shortage of non-renewable energy sources is caused by the excessive consumption of fossil fuel, the electric automobile has the characteristics of good environmental protection and sustainable development, and becomes one of the mainstream and the hot spots of the current social development. However, the large-scale load of the electric vehicle accessing the power grid can cause the influences of local voltage drop of a power supply system, transformer overload, large load randomness, large load peak-valley difference value and the like.
The charging control guidance circuit of the dc charging pile is shown in fig. 1. In a dc charging system, the main signal and energy transmission paths include: DC +/-is an electric energy transmission path, S +/-is a CAN communication bus, CC1 is a charging pile connection confirmation signal line, CC2 is an electric automobile connector confirmation signal line, and A +/-is auxiliary power supply. In addition to the illustration, there are also some other non-stake-required interactive but interoperability-related signals: emergency stop signal, K1 and K2 switch feedback signal, entrance guard signal, etc. All relevant signals constitute a complete timing sequence of charge control, including normal charge states and fault states. These signals can generate a large number of different non-standard cases during the pile-blending charging process of different control strategies. How to ensure the charging safety and compatibility of non-standard case when the non-standard case actually occurs in the vehicle charging logic control design and research and development stages is an important technical subject faced by each vehicle enterprise in the new energy vehicle popularization stage at present. The problem not only relates to matching charging and connection control, but also includes complex systems such as a vehicle control unit (ECU), a BMS control strategy, an automobile safety function, and the like, which cooperate in charging. Therefore, to solve such technical problems, it is necessary to monitor and analyze the charging related control signals, and also to include internal control and communication signals of the electric vehicle. And because charging facilities and electric vehicles are various in types, a large data platform is urgently needed for supporting so as to shorten the research and development period and reduce the research and development cost.
Considering that the electric automobile is supplied with power by the AC/DC charging equipment, the evidence data acquisition is carried out on the electric automobile charging facility. On one hand, the demand response characteristic of the electric automobile load can be obtained, the effect of elastic load can be fully exerted, the load form is improved, and the economical efficiency of system operation is improved; on the other hand, a centralized vehicle pile fusion technology verification and test platform is provided, and technical communication, scheme improvement and scheme innovation are carried out on a plurality of vehicle enterprises and pile enterprises. In addition, the empirical data acquisition platform can be used as a detection, inspection and metering tool for verifying that the vehicle enterprises and the pile enterprises meet the national standards, and can realize the quick compatibility function of different vehicle types by accessing a remote service platform so as to reduce the workload of later maintenance.
Disclosure of Invention
The purpose of the invention is: the evidence data acquisition platform of the vehicle pile charging system is provided for overcoming mismatching and incompatibility of vehicle enterprises and pile enterprises, verifying whether the vehicle enterprises and pile enterprises meet relevant standards or not and the like.
In order to achieve the purpose, the technical scheme of the invention provides a charging system evidence data acquisition platform between an electric automobile and a charging pile, which is characterized in that: the system comprises a control system and a test system connected with a charging system, wherein the control system and the test system are in communication connection through a signal transmission layer, and the control system is a signal processing analysis layer and is used for displaying, analyzing and storing acquired signals; the test system comprises
The signal physical sampling layer is used for collecting analog quantity signals of the charging system, wherein the analog quantity signals comprise direct current voltage, direct current, CC1 voltage and CC2 voltage signals;
the signal conditioning layer is used for conditioning and amplifying the analog quantity of the collected direct current voltage, direct current, CC1 voltage and CC2 voltage, protecting the front-end circuit, isolating the high-voltage analog signal and transmitting the high-voltage analog signal to the signal recording layer;
and the signal recording layer is used for recording the acquired signals and transmitting the signals to the signal processing and analyzing layer through the signal transmission layer.
Preferably, the control system is controlled by a display machining control machine.
Preferably, the signal physical sampling layer comprises a voltage conditioning module for collecting a voltage signal of the charging system and a current transformer for collecting a current signal of the charging system.
Preferably, the signal conditioning layer comprises a CAN communication module and a voltage acquisition module, and the voltage acquisition module is in communication connection with the voltage conditioning module and the current transformer respectively.
Preferably, the signal recording layer comprises a controller, and the controller is in communication connection with the CAN communication module and the voltage acquisition module respectively.
Preferably, the signal transmission layer comprises a switch, and the switch transmits signals between the control system and the measurement system through a data interaction network line.
Preferably, the controller is provided with a power-on button and an emergency stop button.
Preferably, the control system and the measurement system communicate directly via the FTP protocol.
Compared with the prior art, the invention has the beneficial effects that:
the charging system evidence data acquisition platform between the electric automobile and the charging pile can be simultaneously connected with a plurality of vehicle pile charging systems to realize evidence data acquisition of the plurality of charging systems, sends instructions through the Ethernet to acquire, store and analyze acquired data, and finally presents acquisition diversification, data imaging and analysis intellectualization of the charging systems.
Drawings
Fig. 1 is a circuit diagram of a charging control guidance circuit of a dc charging pile;
FIG. 2 is a schematic diagram of an empirical data acquisition platform model of the vehicle pile charging system of the present invention;
fig. 3 is a test interface diagram of the empirical data acquisition platform of the vehicle pile charging system of the present invention.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
As shown in fig. 2, the charging system evidence data acquisition platform between the electric vehicle and the charging pile mainly comprises a control system and a test system connected with the charging system, wherein the control system and the test system establish communication connection through a signal transmission layer, and the control system is a signal processing analysis layer and is used for displaying, analyzing and storing acquired signals; the test system comprises a controller, a CAN communication module, a voltage acquisition module, a voltage conditioning module and a current transformer, and has the functions of integrating power analysis, monitoring, wave recording, metering and the like. The voltage acquisition module is a 16-path voltage differential acquisition module, and the voltage conditioning module and the current transformer form a signal physical sampling layer for acquiring voltage signals and current signals of the charging system; the CAN communication module and the voltage acquisition module form a signal conditioning layer, and the voltage acquisition module is respectively in communication connection with the voltage conditioning module and the current transformer and is used for conditioning the acquired voltage signal and current signal and transmitting the conditioned voltage signal and current signal to the signal recording layer; the controller is a signal recording layer and is respectively in communication connection with the CAN communication module and the voltage acquisition module and used for recording acquired signals and transmitting the acquired signals to the signal processing and analyzing layer through the signal transmission layer; the appearance color of the control cabinet adopts RAL 7035. The control panel has the necessary power-on and emergency stop buttons. The exchanger is a signal transmission layer and is used for transmitting signals between the signal transmission layer and the signal processing analysis layer, and the signal recording layer and the signal processing analysis layer can also directly communicate through an FTP protocol; the signal processing and analyzing layer is used for displaying, analyzing and storing the acquired signals; the PC as an upper computer has the functions of data acquisition triggering and control, data display, man-machine interaction, data storage, data analysis, report generation and the like.
The control system is controlled by a display processing control machine, and a Labview development platform of NI company is adopted to develop a monitoring system, so that the acquisition and analysis of test waveforms are realized. The measurement system adopts an NI-PCI system, selects a 19-inch display as a human-computer interface, can set parameters such as test current, power-on time and the like, and can display test state information and fault information and carry out data acquisition and storage. The key components used by the measurement and control system are preferably selected from the first-line brands at home and abroad, the industrial personal computer, the communication board card and the corresponding connecting cable are selected from corresponding products of the Mowa science and technology and NI company, and various sensors are selected from corresponding products of the companies such as the forest society, the LEM and the like.
The invention has the function of measuring and recording the charging pile data. Through testing functions of the charging pile K1 and K2 front end voltage, direct current output (DC +/DC-) voltage and current, auxiliary power supply (A +/A-) voltage and current, control guide parameters (detection point 1/2 voltage) and the like, a time-varying curve (waveform) and a real-time numerical value of the parameters are displayed in the testing process, the automatic wave recording function is achieved when the curve is tested, the time-varying curve can perform various operations such as color variation, thickness variation, display type and zooming, and functions such as graphic icons and graphic original data can be output.
The communication function is provided. The control system can be communicated with a plurality of sets of test systems at the same time, test data and a waveform map are sent in real time or continuously according to the commands of the control system in a charging pile electrical performance test, a safety requirement test and an interoperation test, the plurality of sets of test systems can also run independently, the functions of automatically analyzing and uploading data are achieved, and signal lossless transmission is met.
Possesses the collection trigger function. The user CAN start and stop the acquisition system through the control system, CAN also trigger acquisition by receiving CAN communication data, and has the function of prerecording, and CAN also transmit and store the data of 10s before triggering.
The function of saving the BLF format is provided. The collected CAN message data CAN be stored as a file with a blf format (a format stored by a Vector), and the analysis processing of the data by using other analysis software of the Vector at the later stage is facilitated.
Has data analysis function. The test system has a data analysis function, analyzed CAN messages and collected curves such as voltage and current CAN be displayed together in one graph, and a user CAN freely select which curves to display, so that a charging timing diagram and a voltage and current trend graph CAN be conveniently and visually checked.
The method has the function of testing national standard projects. In order to facilitate the distributed equipment to independently complete the test items of the charging pile, the equipment should be capable of performing the following standard compliance tests after (or at the same time) data acquisition is completed, namely identifying and analyzing data and calculating related original data, and determining and displaying test results: GB/T27930-2017, GB/T34657.1-2017, GB/T34658-2017, etc.
The cloud platform uploading function is achieved. The test system needs to have a function of uploading the analyzed and processed data result to the cloud platform, and has various error processing mechanisms such as breakpoint transmission and error data correction.
The power analysis function is provided. And calculating the power of the charging pile in real time, and synchronously displaying the power, the voltage and the current curves.
A channel configuration function. The test system needs to have a channel configuration function, and is used for configuring the actual physical channel corresponding to each signal and the conversion relation of the signal during testing.
Has the function of a card marking ruler. In the time-varying curve chart, a specific CAN time sequence signal CAN be selectively analyzed, and the real-time analyzed CAN signal actual value is displayed through the function of the vernier caliper
The data acquisition signals are related according to charging control of the electric automobile and are divided into two related parts, one part is non-vehicle-mounted charger side signals, the other part is vehicle-mounted signal acquisition, and the signals on the two sides can be respectively fused in a signal recording layer. The signal is directly input into the conditioning layer, and after the voltage level conversion, the data is recorded. According to the principle of the dc charging system, the collection signal and the sampling requirement are summarized as shown in table 1:
TABLE 1
All data are recorded in a local storage medium of the collector after being conditioned and collected. After the complete process of one-time charging is completed, based on complete acquisition of original data, data analysis software carries out communication protocol consistency and interoperability and carries out compliance analysis based on the current national standard; analysis may also be performed concurrently based on non-mapping trial examples.
In order to facilitate the distributed equipment to independently complete the test items of the charging pile, the platform should be capable of performing compliance tests of the following standards after (or at the same time) data acquisition is completed, that is, identifying and analyzing data and calculating related original data, and determining and displaying test results: GB/T27930-2017, GB/T34657.1-2017, GB/T34658-2017, etc. The cloud platform has the function of uploading the analyzed and processed data result to the cloud platform, and has various error processing mechanisms such as breakpoint transmission, error data correction and the like. The main analytical data are shown in table 2:
TABLE 2
After the analysis of the related items is completed, all the raw data and the analysis results are stored in the local device. The test interface of the evidence data acquisition platform of the vehicle pile charging system is shown in fig. 3.
According to the charging system evidence data acquisition platform between the electric automobile and the charging pile, charging facilities covering most charging facility operators and manufacturers need to be built, and the charging facilities are in a normal operation state; building a vehicle test position, so that a plurality of vehicles can carry out vehicle pile matching debugging at the position; building an indoor vehicle reforming stopping and placing area, and reforming a vehicle with a problem in a test on site; and constructing a real vehicle real pile (a charging system and an in-vehicle electric system) data acquisition system and data analysis software.

Claims (8)

1. The utility model provides an electric automobile and fill charging system testimony of an entirety data acquisition platform between electric pile which characterized in that: the system comprises a control system and a test system connected with a charging system, wherein the control system and the test system are in communication connection through a signal transmission layer, and the control system is a signal processing analysis layer and is used for displaying, analyzing and storing acquired signals; the test system comprises
The signal physical sampling layer is used for collecting analog quantity signals of the charging system, wherein the analog quantity signals comprise direct current voltage, direct current, CC1 voltage and CC2 voltage signals;
the signal conditioning layer is used for conditioning and amplifying the analog quantity of the collected direct current voltage, direct current, CC1 voltage and CC2 voltage, protecting the front-end circuit, isolating the high-voltage analog signal and transmitting the high-voltage analog signal to the signal recording layer;
and the signal recording layer is used for recording the acquired signals and transmitting the signals to the signal processing and analyzing layer through the signal transmission layer.
2. The charging system evidence data acquisition platform between an electric automobile and a charging pile according to claim 1, characterized in that: the control system is controlled in a mode of a display machining control machine.
3. The charging system evidence data acquisition platform between an electric automobile and a charging pile according to claim 1, characterized in that: the signal physical sampling layer comprises a voltage conditioning module for collecting voltage signals of the charging system and a current transformer for collecting current signals of the charging system.
4. The charging system evidence data acquisition platform between an electric automobile and a charging pile according to claim 1, characterized in that: the signal conditioning layer comprises a CAN communication module and a voltage acquisition module, and the voltage acquisition module is respectively in communication connection with the voltage conditioning module and the current transformer.
5. The charging system evidence data acquisition platform between an electric automobile and a charging pile according to claim 1, characterized in that: the signal recording layer comprises a controller which is in communication connection with the CAN communication module and the voltage acquisition module respectively.
6. The charging system evidence data acquisition platform between an electric automobile and a charging pile according to claim 1, characterized in that: the signal transmission layer comprises a switch, and the switch transmits signals between the control system and the measurement system through a data interaction network cable.
7. The charging system evidence data acquisition platform between an electric automobile and a charging pile according to claim 5, characterized in that: and the controller is provided with a power-on button and an emergency stop button.
8. The charging system evidence data acquisition platform between an electric automobile and a charging pile according to claim 1, characterized in that: the control system and the measuring system are directly communicated through an FTP protocol.
CN202010168160.2A 2020-03-11 2020-03-11 Charging system evidence data acquisition platform between electric automobile and charging pile Pending CN111290304A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112519624A (en) * 2020-11-19 2021-03-19 国网天津市电力公司 Electric automobile charging load studying and judging system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112519624A (en) * 2020-11-19 2021-03-19 国网天津市电力公司 Electric automobile charging load studying and judging system

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