Charging pile fault recording implementation method and recording device

Abstract

The invention provides a charging pile fault recording realization method and a recording device, and the method comprises the steps: building a voltage and current sampling loop, a key device state sampling loop, and a CAN communication monitoring loop through a recording device additionally disposed on a charger; the method comprises the following steps: acquiring real-time data and a communication message during charging of a charging pile through a voltage and current sampling loop, a key device state sampling loop and a CAN communication monitoring loop, and forming the real-time data into a log file; and analyzing the communication message through a wave recording device, judging whether a starting failure or an abnormal shutdown condition occurs in the charging process, converting the log data into a waveform image when the starting failure or the abnormal shutdown condition occurs, and transmitting the waveform image and a log file to a background. According to the invention, the wave recording device is additionally arranged on the charger, so that the specific cause of the fault can be clearly and accurately positioned when the charging pile has the fault, thereby realizing timely maintenance, realizing automation and saving manpower and material resources.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a method and a device for recording faults of a charging pile. Background Art

[0002] In recent years, the charging facility industry has continued to develop, and the number of charging piles has increased rapidly. The continuous growth of the number of charging piles is also accompanied by a growing number of on-site failures. Charging pile failures often occur in an instant. When operation and maintenance personnel go to the site for repairs, they can only use historical message reading and background fault record viewing. They cannot more intuitively view the specific conditions of the key components of the charging pile when the failure occurs, which may result in the inability to clearly and accurately locate the specific cause of the failure. Some uncommon problems even require a large number of simulations to reproduce the failure for analysis and location, and there are certain difficulties in the later retrospective location. Summary of the invention

[0003] In order to solve the problem that the prior art cannot clearly and accurately locate the specific cause of the fault when the charging pile fails, and thus cannot repair it in time, the present invention proposes a charging pile fault recording method, including:

[0004] By installing a wave recording device on the charger, build a voltage and current sampling circuit, a key component status sampling circuit, and a CAN communication monitoring circuit;

[0005] Acquire real-time data and communication messages of the charging pile during charging through the voltage and current sampling loop, the key component status sampling loop, and the CAN communication monitoring loop, and form the real-time data into a log file;

[0006] The communication message is analyzed by the recording device to determine whether a startup failure or abnormal shutdown occurs during the charging process. When a startup failure or abnormal shutdown occurs, the log data is converted into a waveform image, and the waveform image and log file are transmitted to the background.

[0007] Optionally, the voltage and current sampling circuit, the key component status sampling circuit, and the CAN communication monitoring circuit are constructed by installing a wave recording device on the charger, including:

[0008] Connect the positive and negative poles of the active DI switch input interface configured on the control board of the recording device to the two poles of the linkage auxiliary contact on the charging pile switch device to build a key device status sampling loop;

[0009] The communication port configured on the control board of the recording device is connected to the CAN bus in parallel with the communication line to build a CAN communication monitoring loop;

[0010] Connect the sampling port configured on the control board of the recording device to the positive and negative poles of the DC bus to construct a voltage sampling loop;

[0011] Connect the sampling port configured on the control board of the recording device to the two ends of the shunt provided in the output circuit of the charging pile to construct a current sampling circuit;

[0012] Wherein, the voltage and current sampling loop includes: a voltage sampling loop and a current sampling loop.

[0013] Optionally, the real-time data and communication messages of the charging pile during charging are obtained through the voltage and current sampling loop, the key component status sampling loop, and the CAN communication monitoring loop, and the real-time data is formed into a log file, including:

[0014] The output voltage of the DC side of the charging pile, the voltage value of the control pilot circuit CC1, and the real-time mV voltage at both ends of the charging pile shunt are obtained through the voltage and current sampling loop, and the real-time mV voltage at both ends of the charging pile shunt is converted into current according to the transformation ratio;

[0015] The remote signaling status of the switch device is obtained through the key device status sampling loop to generate a communication message;

[0016] Monitor CAN communication data and AC side electric meter values ​​through the CAN communication monitoring loop, generate communication messages from CAN communication data, and provide internal debugging communication ports for designers;

[0017] The chip of the recording device forms a log file with the output voltage of the DC side of the charging pile, the voltage value of the control pilot circuit CC1, the current and the value of the AC side meter.

[0018] Optionally, the DC side output voltage of the charging pile, the voltage value of the control steering circuit CC1, and the real-time mV voltage at both ends of the charging pile shunt are obtained through the voltage and current sampling loop, and the real-time mV voltage at both ends of the charging pile shunt is converted into current according to the transformation ratio, including:

[0019] The DC side output voltage of the charging pile is obtained through the DC voltage sampling port in the voltage and current sampling loop;

[0020] The real-time mV voltage at both ends of the charging pile shunt is sampled through the DC current sampling port in the voltage and current sampling loop, and the real-time mV voltage at both ends of the charging pile shunt is converted into current according to the transformation ratio;

[0021] The voltage value of the control steering circuit CC1 is obtained by sampling a control steering voltage in the voltage and current sampling loop.

[0022] Optionally, obtaining the remote signaling state of the switching device through a key device state sampling loop includes:

[0023] Acquiring the remote signaling state of the switch device connected to the multi-channel active DI switch quantity input interface through the multi-channel active DI switch quantity input interface in the key device status sampling loop;

[0024] Wherein, the switch devices include: DC contactor, AC contactor, auxiliary power relay, electronic lock, emergency stop device.

[0025] Optionally, the CAN communication data and the AC side electric meter value are monitored through the CAN communication monitoring loop, and the CAN communication data is generated into a communication message, and an internal debugging communication port is provided for designers, including:

[0026] Monitor CAN communication data through the 4 CAN2.0B communication ports in the CAN communication monitoring loop and generate communication messages;

[0027] Monitor the AC side meter value through 1-channel 485 communication in the CAN communication monitoring loop, and then obtain the AC side voltage and current data;

[0028] Internal debugging is performed through 1-channel 232 communication in the CAN communication monitoring loop;

[0029] Among them, CAN communication data includes: communication data between charger and vehicle, communication between internal TCU and DCCU, and communication data between DCCU and charging module.

[0030] Optionally, the communication message is used as a basis for judging whether a startup failure or abnormal shutdown occurs during the charging process by a wave recording device, and when a startup failure or abnormal shutdown occurs, the log data is converted into a waveform image, including:

[0031] The recording device is used to judge whether the startup is successful by judging the content of the "startup completion status frame" in the communication message. If the startup fails, the log generated from the receipt of the "startup command frame" to the receipt of the "startup completion status frame" is converted into a waveform image for storage. Otherwise, if the startup is successful, the abnormal shutdown cause of the "stop completion frame" in the communication between the TCU and the DCCU when charging is stopped is detected;

[0032] When an abnormal shutdown reason occurs, the log data generated during the charging process is converted into a waveform image;

[0033] When there is no abnormal shutdown reason, the log data generated during the charging process is not converted into a waveform image.

[0034] Optionally, the recording device has a power-off protection function, which delays power-off for 1 minute after the working power supply stops supplying power, and records the specific circumstances before and after the charging pile accidentally loses power.

[0035] Optionally, the method also includes directly viewing the log and waveform image through an LVDS touch screen in the wave recording device.

[0036] On the other hand, the present invention also provides a recording device for recording faults of charging piles, comprising:

[0037] The wave recording device is installed on the charger to build the voltage and current sampling circuit, key component status sampling circuit, and CAN communication monitoring circuit;

[0038] The voltage and current sampling loop, key device status sampling loop, and CAN communication monitoring loop are used to obtain real-time data and communication messages when the charging pile is charging, and form the real-time data into a log file;

[0039] The recording device is used to use the communication message as a basis for judging whether a startup failure or an abnormal shutdown occurs during the charging process. When a startup failure or an abnormal shutdown occurs, the log data is converted into a waveform image and transmitted to the background together with the log file.

[0040] Optionally, the recording device is installed on the charger to build a voltage and current sampling circuit, a key component status sampling circuit, and a CAN communication monitoring circuit, including

[0041] The positive and negative poles of the active DI switch input interface configured on the control board of the recording device are connected to the two poles of the linkage auxiliary contact on the charging pile switch device to build a key device status sampling loop;

[0042] The communication port configured on the control board of the recording device is connected in parallel with the communication line on the CAN bus to construct a CAN communication monitoring loop;

[0043] The sampling port configured on the control board of the recording device is connected to the positive and negative poles of the DC bus to construct a voltage sampling loop;

[0044] The sampling port configured on the control board of the recording device is connected to the two ends of the shunt provided in the output circuit of the charging pile to construct a current sampling circuit;

[0045] Wherein, the voltage and current sampling loop includes: a voltage sampling loop and a current sampling loop.

[0046] Optionally, the voltage and current sampling loop includes: a voltage sampling loop and a current sampling loop;

[0047] The voltage sampling circuit is used to obtain the DC side output voltage of the charging pile and the voltage value of the control pilot circuit CC1;

[0048] The current sampling loop is used to collect the real-time mV voltage at both ends of the charging pile shunt, and convert the real-time mV voltage at both ends of the charging pile shunt into current according to the transformation ratio.

[0049] Optionally, the CAN communication monitoring loop includes:

[0050] 4 CAN2.0B communication ports, used to monitor CAN communication data and generate communication messages;

[0051] 1-way 485 communication, used to monitor the AC side meter value and obtain the AC side voltage and current data;

[0052] 1-channel 232 communication, used to provide designers with an internal debugging communication port.

[0053] Optionally, the wave recording device is specifically used for:

[0054] The recording device is used to judge whether the startup is successful by judging the content of the "startup completion status frame" in the communication message. If the startup fails, the log generated from the receipt of the "startup command frame" to the receipt of the "startup completion status frame" is converted into a waveform image for storage. Otherwise, if the startup is successful, the abnormal shutdown cause of the "stop completion frame" in the communication between the TCU and the DCCU when charging is stopped is detected;

[0055] When an abnormal shutdown reason occurs, the log data generated during the charging process is converted into a waveform image;

[0056] When there is no abnormal shutdown reason, the log data generated during the charging process is not converted into a waveform image.

[0057] In another aspect, the present application further provides an electronic device, comprising: at least one processor and a memory; the memory and the processor are connected via a bus;

[0058] The memory is used to store one or more programs;

[0059] When the one or more programs are executed by the at least one processor, a charging pile fault recording implementation method as described above is implemented.

[0060] On the other hand, the present application also provides a readable storage medium having an execution program stored thereon, and when the execution program is executed, a charging pile fault recording implementation method as described above is implemented.

[0061] Compared with the prior art, the present invention has the following beneficial effects:

[0062] The present invention provides a method for recording faults of a charging pile, comprising: constructing a voltage and current sampling loop, a key component status sampling loop, and a CAN communication monitoring loop by means of a recording device installed on a charger; obtaining real-time data and communication messages of the charging pile during charging by means of the voltage and current sampling loop, the key component status sampling loop, and the CAN communication monitoring loop, and forming a log file with the real-time data; analyzing the communication messages by means of a recording device to determine whether a startup failure or an abnormal shutdown occurs during the charging process, and when a startup failure or an abnormal shutdown occurs, converting the log data into a waveform image, and transmitting the waveform image and the log file to the background. The present invention installs a recording device on the charger, and can clearly and accurately locate the specific cause of the fault when a fault occurs in the charging pile, thereby realizing timely maintenance, and realizing automation, saving manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 This is a flow chart of a charging pile fault recording implementation method of the present invention;

[0064] Figure 2 This is a schematic diagram of the sampling control board interface of the present invention;

[0065] Figure 3 It is the waveform diagram of the DC contactor of the present invention;

[0066] Figure 4 It is the principle diagram of the wave recording device system of the present invention;

[0067] Figure 5 The figure is a flow chart of data processing by the wave recording device of the present invention;

[0068] Figure 6 A schematic diagram of a CAN communication log file monitored and transferred by the wave recording device of the present invention;

[0069] Figure 7 This is a schematic diagram of the communication message between the charging pile and the vehicle of the present invention;

[0070] Figure 8 This is a schematic diagram of the communication message between the charging pile TCU and DCCU of the present invention;

[0071] Fig. 9 This is a schematic diagram of the communication message between the charging pile DCCU and the charging module of the present invention;

[0072] Fig.10 An image generated when simulating a door access failure during charging of the present invention;

[0073] Fig.11 The figure is a schematic diagram of the structure of an electronic device of the present invention. DETAILED DESCRIPTION

[0074] In view of the above problems, the present invention provides a method for recording faults of a charging pile. The invention, without changing the original hardware and software of the charger system, obtains the real-time data and communication content of the charging pile by installing a recording device on the charger, building a voltage and current sampling loop, a key component status sampling loop, and a CAN communication monitoring loop, and stores the data and messages of each charge in a log file. When the recording device detects that a startup failure or an abnormal shutdown occurs during this charging process, the log data is converted into a waveform image and sent to the background together with the log. The stored waveform images and logs are stored in turn, and the messages and images have corresponding numbers. The device can store 20 charging process information. When more than 20, the previously stored file information is scrolled and deleted to reduce memory usage. The operation and maintenance personnel can directly view the logs and waveform images through the background or display screen, so that the operation and maintenance personnel can analyze and trace back more intuitively, which is conducive to fault analysis and positioning and reduces the difficulty of on-site operation and maintenance.

[0075] In order to better understand the present invention, the content of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0076] Embodiment 1:

[0077] A charging pile fault recording method, such as Figure 1 As shown, including:

[0078] Step S1, by installing a wave recording device on the charger, build a voltage and current sampling loop, a key component status sampling loop, and a CAN communication monitoring loop;

[0079] Step S2, obtaining real-time data and communication messages of the charging pile during charging through the voltage and current sampling loop, the key component status sampling loop, and the CAN communication monitoring loop, and forming the real-time data into a log file;

[0080] Step S3, analyzing the communication message through the recording device to determine whether a startup failure or abnormal shutdown occurs during the charging process. When a startup failure or abnormal shutdown occurs, the log data is converted into a waveform image, and the waveform image and log file are transmitted to the background.

[0081] The charging pile fault recording device and method are as follows:

[0082] (1) Hardware parameters and functional configuration of the recording device.

[0083] Since the wave recording device needs to analyze the charging data in real time and generate waveforms, a chip with a main frequency of 800MHz is used, and the memory uses a DDR3 memory with a capacity of 512MB. Since the generated image needs to be retained, the control board uses a FLASH memory with a memory of 1GB. The sampling control board uses a 12V DC power supply so that it can directly use the existing 12V auxiliary power supply on the charging pile;

[0084] The device control panel is equipped with 10 active DI switch input interfaces, which are used to obtain the remote signal status of switch components such as DC contactors, AC contactors, auxiliary power relays, electronic locks, and emergency stops, and 4 channels are reserved for backup;

[0085] In terms of communication, 4 CAN2.0B communication ports are configured to monitor important CAN communication data such as communication between charger and vehicle, communication between internal TCU and DCCU, and communication between DCCU and charging module; 1 485 communication port is used to monitor the value of AC side electric meter to obtain AC side voltage and current data; 1 232 communication port is used for internal debugging by designers;

[0086] In terms of sampling, 2 DC voltage sampling ports are configured with a range of -200V to 1000V, an accuracy of ≤±5V, and a ms-level sampling period, which are used to obtain the real-time transformation of the DC side output voltage of the charging pile; 2 DC current sampling ports, mV-level voltage sampling, an accuracy of ≤0.5%, and a sampling period of 5ms, which are used to sample the real-time mV voltage at both ends of the charging pile shunt and convert it into current according to the transformation ratio; 1 control pilot voltage sampling port, with a range of 0V to 15V and an accuracy of ≤1%, is used to obtain the voltage value of the control pilot circuit CC1.

[0087] In addition, the recording device has a power-off protection function, which can delay power-off for 1 minute after the working power supply stops supplying power, so as to record the specific situation before and after the charging pile accidentally loses power; it has an LVDS touch screen display function for directly viewing logs and waveform images; the interface diagram of the sampling control board is as follows Figure 2 shown.

[0088] (2) Acquisition of charging pile data and image generation.

[0089] Obtaining the state of the switch quantity of the charging pile: Utilize the linkage auxiliary contacts on the switch device of the charging pile to connect the positive and negative poles of the active DI input interface of the recording device to the two poles of the auxiliary contacts to form a sampling circuit. When each switch device is disconnected, the auxiliary contact is disconnected, and there is a 12V voltage difference between the positive and negative poles of the active input port of the control board. After the control board recognizes this state, it determines that the switch device is disconnected, and the state record in the log is 0. The generated waveform image corresponds to a low level; when the switch device is closed, it will drive the auxiliary contact of the switch to close. At this time, the positive and negative poles of the control board's open port are short-circuited, and the voltage is pulled down to 0V. After the control board recognizes this state, it determines that the switch device is closed, and the state record in the log is 1. The generated waveform image corresponds to a high level. As follows Figure 3 The DC contactor waveform is shown below.

[0090] Acquisition of the voltage and current values ​​of the charging pile: connect the voltage sampling port of the recording device directly to the DC+ and DC- poles of the DC bus to directly sample the voltage and write it to the log at a sampling period of 1ms; connect the current sampling port of the recording device directly to the two ends of the shunt provided in the output circuit of the charging pile, directly sample the millivolt voltage at both ends and convert it into output current through a transformation ratio, and also write it to the log at a sampling period of 1ms; the voltage value of detection point 1 is directly obtained by sampling the CC1 line and PE line provided by the gun head, and written to the log at a sampling period of 50ms; the voltage and current on the AC side are obtained by monitoring the communication between the AC meter provided by the charging pile and the DCCU. The AC voltage and current data are written to the log at a frequency of the monitored message period. The recording device finally generates an image based on the points of each data value in the log;

[0091] Acquisition of communication messages: The data interaction inside the charger is acquired by monitoring the parallel communication line on the CAN bus, and directly transferred to logs for easy viewing by operation and maintenance personnel. The recording device will trigger the saving and uploading of logs and waveforms by identifying the message content. The monitored messages include messages between TCU and DCCU, DCCU and charging module, and charger and vehicle. The schematic diagram of the entire system is as follows Figure 4 As shown, QF1 is the charger switch power circuit breaker, K8 is the charger switch power circuit relay, QF is the charger AC main circuit breaker, KM is the charger AC main circuit contactor, FU is the charger DC circuit fuse, RS is the charger DC circuit shunt, and K1 is the charger DC circuit contactor.

[0092] (3) The data processing flow of the recording device.

[0093] According to the communication protocol between the charging control unit (TCU) and the charging controller (DCCU), the data collected during each charging period is recorded from the recognition of the "start command frame" in the TCU-DCCU communication to the monitoring of the "start completion status frame" or "stop completion frame" with the content of "failure". The collected voltage, current, switch status and other data are stored in the form of log generation, and the monitored communication messages are stored in the form of direct transfer. The data content is judged based on the content in the message. If an abnormality occurs, a waveform image is generated for storage, and the stored log and waveform image are uploaded to the background together. The specific process is as follows:

[0094] Whether the startup is successful is determined by detecting the content of the "startup completion status frame" in the TCU-DCCU communication. If the startup fails, the log generated from the receipt of the "startup command frame" to the receipt of the "startup completion status frame" is converted into a waveform image for storage, and the waveform and log are uploaded to the background together;

[0095] If the startup is successful, wait for the abnormal stop reason of the "stop completion frame" in the communication between TCU and DCCU when charging stops. If an abnormal stop reason appears, it means that this charging is abnormally stopped. The control board converts the logs generated during the charging process into waveform images and stores them in turn, and uploads the waveforms and logs to the background together; if no abnormal stop reason appears, it means that this charging is normally stopped, no image is generated, and the log does not need to be uploaded to the background. Figure 5 As shown below.

[0096] The present invention provides a charger fault recording method, which does not require modification of the charging pile hardware and software, and only requires an external device to record the fault waveform of the charger during charging. Through the log data and waveform images generated by charging anomalies, operation and maintenance personnel can more intuitively understand the overall situation of the charging pile when the fault occurs from the device screen or background, which is conducive to tracing and locating the fault problem of the charging equipment, and effectively improves the work efficiency of operation and maintenance personnel.

[0097] Example 2

[0098] Based on a 180kW charger, a recording test was carried out using the recording device developed using the method described in this article.

[0099] The log file generated by the recording device after obtaining the voltage and current switch status of the charging pile is as follows:

[0100] Each line from left to right is: year, month, day, hour, minute, second, millisecond, A phase AC voltage, A phase AC current, B phase AC voltage, B phase AC current, C phase AC voltage, C phase AC current, AC input power, DC output voltage, DC output current 5 times 1ms sampling, DC contactor status, detection point 1 voltage value, electronic lock status, AC relay status. The CAN communication log file monitored and transferred by the recording device is as follows: Figure 6 , the communication message between the charging pile and the vehicle is as follows Figure 7 As shown, the communication message between the charging pile TCU and DCCU is as follows Figure 8 As shown, the communication message between the charging pile DCCU and the charging module is as follows Fig. 9 As shown in the figure, the access control failure is simulated during charging, and the generated image is as follows Fig.10 The waveform numbers in the figure are from 1 to 10: waveform 1 outer voltage value; waveform 2 inner voltage value; waveform 3 output current value; waveform 4 detection point 1 voltage value; waveform 5 auxiliary power switch state; waveform 6 electronic lock state; waveform 7 DC output contactor state; waveform 8 access control state; waveform 9 emergency stop state; waveform 10 AC relay state.

[0101] The horizontal axis in the figure uses a unified time axis, with each small grid being 1S; the vertical axis uses different amplitudes: waveforms 1 and 2 are 30V per grid, waveform 3 is 30A per grid, waveform 4 is 4V per grid, and waveforms 5-10 are switch states, which only distinguish between high and low levels and have no actual numerical meaning.

[0102] Image analysis: From the image, we can see that waveform 8 first changes from a high level to a low level during the charging process, and then the DC contactor of the charger is disconnected within 1S, and the voltage and current output gradually drop to 0. The auxiliary power supply stops after about 3S, and finally the electronic lock is unlocked after about 5S. Through image analysis, it can be determined that the charger start-stop process complies with the national standard timing. The reason for the shutdown is the disconnection of the access control, and there are no other device failures and abnormalities.

[0103] Example 3

[0104] The present invention based on the same inventive concept also provides a recording device for recording faults of charging piles, comprising:

[0105] The wave recording device is installed on the charger to build the voltage and current sampling circuit, key component status sampling circuit, and CAN communication monitoring circuit;

[0106] The voltage and current sampling loop, key device status sampling loop, and CAN communication monitoring loop are used to obtain real-time data and communication messages when the charging pile is charging, and form the real-time data into a log file;

[0107] The recording device is used to use the communication message as a basis for judging whether a startup failure or an abnormal shutdown occurs during the charging process. When a startup failure or an abnormal shutdown occurs, the log data is converted into a waveform image and transmitted to the background together with the log file.

[0108] Optionally, the recording device is installed on the charger to build a voltage and current sampling circuit, a key component status sampling circuit, and a CAN communication monitoring circuit, including

[0109] The positive and negative poles of the active DI switch input interface configured on the control board of the recording device are connected to the two poles of the linkage auxiliary contact on the charging pile switch device to build a key device status sampling loop;

[0110] The communication port configured on the control board of the recording device is connected in parallel with the communication line on the CAN bus to construct a CAN communication monitoring loop;

[0111] The sampling port configured on the control board of the recording device is connected to the positive and negative poles of the DC bus to construct a voltage sampling loop;

[0112] The sampling port configured on the control board of the recording device is connected to the two ends of the shunt provided in the output circuit of the charging pile to construct a current sampling circuit;

[0113] Wherein, the voltage and current sampling loop includes: a voltage sampling loop and a current sampling loop.

[0114] Optionally, the voltage and current sampling loop includes: a voltage sampling loop and a current sampling loop;

[0115] The voltage sampling circuit is used to obtain the DC side output voltage of the charging pile and the voltage value of the control pilot circuit CC1;

[0116] The current sampling loop is used to collect the real-time mV voltage at both ends of the charging pile shunt, and convert the real-time mV voltage at both ends of the charging pile shunt into current according to the transformation ratio.

[0117] Optionally, the CAN communication monitoring loop includes:

[0118] 4 CAN2.0B communication ports, used to monitor CAN communication data and generate communication messages;

[0119] 1-way 485 communication, used to monitor the AC side meter value and obtain the AC side voltage and current data;

[0120] 1-channel 232 communication, used to provide designers with an internal debugging communication port.

[0121] Optionally, the wave recording device is specifically used for:

[0122] The recording device is used to judge whether the startup is successful by judging the content of the "startup completion status frame" in the communication message. If the startup fails, the log generated from the receipt of the "startup command frame" to the receipt of the "startup completion status frame" is converted into a waveform image for storage. Otherwise, if the startup is successful, the abnormal shutdown cause of the "stop completion frame" in the communication between the TCU and the DCCU when charging is stopped is detected;

[0123] When an abnormal shutdown reason occurs, the log data generated during the charging process is converted into a waveform image;

[0124] When there is no abnormal shutdown reason, the log data generated during the charging process is not converted into a waveform image.

[0125] Example 4

[0126] like Fig.11 As shown, the present invention also provides an electronic device, which may be a computer device, a single-chip device, an intelligent mobile device, etc. The electronic device in this embodiment may include a processor, a memory, a transceiver component, etc. The memory, the processor, and the transceiver component are connected via a bus; the memory may be used to store an execution program, and an exemplary execution program may include instructions; the processor is used to execute the instructions stored in the memory. The memory may also be used to store data, which may be called and / or modified when the instructions are executed.

[0127] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, which is suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions in a storage medium to implement the corresponding method flow or corresponding functions, so as to implement the steps of a charging pile fault recording implementation method in the above embodiment.

[0128] Example 5

[0129] Based on the same inventive concept, the present invention also provides a readable storage medium, specifically an electronic device readable storage medium (Memory), which is a memory device in an electronic device for storing programs and data. It is understandable that the storage medium here may include both built-in storage media in electronic devices and, of course, extended storage media supported by electronic devices. The storage medium provides a storage space that stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by a processor are also stored in the storage space, and these instructions may be one or more execution programs (including program codes). It should be noted that the storage medium here may be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The processor loads and executes one or more instructions stored in the storage medium, which can implement the steps of a charging pile fault recording implementation method in the above embodiment.

[0130] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0131] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0132] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0133] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0134] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. A method for recording faults of a charging pile, characterized in that: include: By installing a wave recording device on the charger, build a voltage and current sampling circuit, a key component status sampling circuit, and a CAN communication monitoring circuit; Acquire real-time data and communication messages of the charging pile during charging through the voltage and current sampling loop, the key component status sampling loop, and the CAN communication monitoring loop, and form the real-time data into a log file; The communication message is analyzed by the recording device to determine whether a startup failure or abnormal shutdown occurs during the charging process. When a startup failure or abnormal shutdown occurs, the log data is converted into a waveform image, and the waveform image and log file are transmitted to the background.

2. The method according to claim 1, characterized in that The recording device installed on the charger is used to build a voltage and current sampling circuit, a key component status sampling circuit, and a CAN communication monitoring circuit, including: Connect the positive and negative poles of the active DI switch input interface configured on the control board of the recording device to the two poles of the linkage auxiliary contact on the charging pile switch device to build a key device status sampling loop; The communication port configured on the control board of the recording device is connected to the CAN bus in parallel with the communication line to build a CAN communication monitoring loop; Connect the sampling port configured on the control board of the recording device to the positive and negative poles of the DC bus to construct a voltage sampling loop; Connect the sampling port configured on the control board of the recording device to the two ends of the shunt provided in the output circuit of the charging pile to construct a current sampling circuit; Wherein, the voltage and current sampling loop includes: a voltage sampling loop and a current sampling loop.

3. The method according to claim 2, characterized in that The real-time data and communication messages of the charging pile during charging are obtained through the voltage and current sampling loop, the key component status sampling loop, and the CAN communication monitoring loop, and the real-time data is formed into a log file, including: The output voltage of the DC side of the charging pile, the voltage value of the control pilot circuit CC1, and the real-time mV voltage at both ends of the charging pile shunt are obtained through the voltage and current sampling loop, and the real-time mV voltage at both ends of the charging pile shunt is converted into current according to the transformation ratio; The remote signaling status of the switch device is obtained through the key device status sampling loop to generate a communication message; Monitor CAN communication data and AC side electric meter values ​​through the CAN communication monitoring loop, generate communication messages from CAN communication data, and provide internal debugging communication ports for designers; The chip of the recording device forms a log file with the output voltage of the DC side of the charging pile, the voltage value of the control pilot circuit CC1, the current and the value of the AC side meter.

4. The method according to claim 3, characterized in that The method of obtaining the DC side output voltage of the charging pile, the voltage value of the control guidance circuit CC1, and the real-time mV voltage at both ends of the charging pile shunt through the voltage and current sampling loop, and converting the real-time mV voltage at both ends of the charging pile shunt into current according to the transformation ratio includes: The DC side output voltage of the charging pile is obtained through the DC voltage sampling port in the voltage and current sampling loop; The real-time mV voltage at both ends of the charging pile shunt is collected through the DC current sampling port in the voltage and current sampling loop, and the real-time mV voltage at both ends of the charging pile shunt is converted into current according to the transformation ratio; The voltage value of the control steering circuit CC1 is obtained by sampling a control steering voltage in the voltage and current sampling loop.

5. The method according to claim 3, characterized in that The step of obtaining the remote signaling state of the switch device through the key device state sampling loop includes: Acquiring the remote signaling state of the switch device connected to the multi-channel active DI switch quantity input interface through the multi-channel active DI switch quantity input interface in the key device status sampling loop; Wherein, the switch devices include: DC contactor, AC contactor, auxiliary power relay, electronic lock, emergency stop device.

6. The method according to claim 3, characterized in that The CAN communication monitoring loop monitors the CAN communication data and the AC side electric meter value, and generates a communication message from the CAN communication data, and provides an internal debugging communication port for designers, including: Monitor CAN communication data through the 4 CAN2.0B communication ports in the CAN communication monitoring loop and generate communication messages; Monitor the AC side meter value through 1-channel 485 communication in the CAN communication monitoring loop, and then obtain the AC side voltage and current data; Internal debugging is performed through 1-channel 232 communication in the CAN communication monitoring loop; Among them, CAN communication data includes: communication data between charger and vehicle, communication between internal TCU and DCCU, and communication data between DCCU and charging module.

7. The method according to claim 3, characterized in that The communication message is used as a basis for judging whether a startup failure or abnormal shutdown occurs during the charging process by using a wave recording device. When a startup failure or abnormal shutdown occurs, the log data is converted into a waveform image, including: The recording device is used to determine whether the startup is successful by judging the content of the "startup completion status frame" in the communication message. If the startup fails, the log generated from the receipt of the "startup command frame" to the receipt of the "startup completion status frame" is converted into a waveform image for storage. Otherwise, if the startup is successful, the abnormal shutdown cause of the "stop completion frame" in the communication between the TCU and the DCCU when charging is stopped is detected; When an abnormal shutdown reason occurs, the log data generated during the charging process is converted into a waveform image; When there is no abnormal shutdown reason, the log data generated during the charging process is not converted into a waveform image.

8. The method according to claim 1, characterized in that The recording device has a power-off protection function, which delays power-off for 1 minute after the working power supply stops supplying power, and records the specific conditions before and after the charging pile accidentally loses power.

9. The method according to claim 1, characterized in that Also included is direct viewing of logs and waveform images via the LVDS touch screen in the waveform recorder.

10. A recording device for recording faults of charging piles, characterized in that: include: The wave recording device is installed on the charger to build the voltage and current sampling circuit, key component status sampling circuit, and CAN communication monitoring circuit; The voltage and current sampling loop, key device status sampling loop, and CAN communication monitoring loop are used to obtain real-time data and communication messages when the charging pile is charging, and form the real-time data into a log file; The recording device is used to use the communication message as a basis for judging whether a startup failure or an abnormal shutdown occurs during the charging process. When a startup failure or an abnormal shutdown occurs, the log data is converted into a waveform image and transmitted to the background together with the log file.

11. An electronic device, characterized in that: include: at least one processor and memory; The memory and the processor are connected via a bus; The memory is used to store one or more programs; When the one or more programs are executed by the at least one processor, a charging pile fault recording implementation method as described in any one of claims 1 to 9 is implemented.

12. A readable storage medium, characterized in that: An execution program is stored thereon, and when the execution program is executed, a charging pile fault recording implementation method as described in any one of claims 1 to 9 is implemented.

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