WO2021203714A1 - 直流充电机检测系统及方法 - Google Patents
直流充电机检测系统及方法 Download PDFInfo
- Publication number
- WO2021203714A1 WO2021203714A1 PCT/CN2020/131676 CN2020131676W WO2021203714A1 WO 2021203714 A1 WO2021203714 A1 WO 2021203714A1 CN 2020131676 W CN2020131676 W CN 2020131676W WO 2021203714 A1 WO2021203714 A1 WO 2021203714A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vehicle
- charger
- detection
- tested
- contact
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Definitions
- the invention relates to the field of vehicle charging equipment detection, in particular to a DC charger detection system and method.
- the traditional charging facility detection method requires a wide variety of external devices and is complicated, requires manual wiring, and takes a long time, resulting in low detection efficiency and easy wiring errors, causing personal injury and equipment damage.
- an oscilloscope needs to be used to manually capture the waveform of each test. The stability is poor and human factors have a greater influence, which is not suitable for on-site testing.
- an external CAN box is required to read the message. Moreover, there is no message translation function, and the messages must be translated one by one according to the standard, which seriously affects the detection efficiency.
- the purpose of the present invention is to provide a DC charger detection system and method suitable for on-site detection, which can realize automatic reading and translation of messages; automatic capture of test waveforms, automatic judgment of conclusions, and the entire process does not require manual intervention, thereby effectively improving Improve the efficiency of on-site inspection.
- the DC charger detection system specifically includes a vehicle controller simulation device, a detection device, and a main control computer; the vehicle controller simulation device is charged with the off-board charger to be tested through the vehicle socket
- the gun is connected to simulate the vehicle BMS control system, and to establish message data interaction with the off-board charger to be tested through the CAN line in the charging gun;
- the contact simulates the fault state of the vehicle;
- the detection device is respectively connected with the vehicle controller simulation device and the off-board charger to be tested, and is used to obtain the vehicle controller simulation device and the off-board charger to be tested
- the message data is translated into a predetermined format, the consistency of the communication protocol between the two is analyzed according to the preset rules, and the result of the consistency analysis of the communication protocol is obtained and saved; and, collecting the vehicle
- the controller simulation device simulates the waveform detection signal of each contact in the vehicle fault state and the contactor signal or front-end voltage of the off-board charger to be tested through each contact on the vehicle socket according to the control instruction; calculates the According
- the present invention also provides a DC charger detection method.
- the method includes: obtaining communication message data between the simulated vehicle BMS control system and the non-vehicle charger to be tested;
- the CAN line in the charging gun of the on-board charger establishes a message data interaction with the off-board charger to be tested;
- the charging gun of the off-board charger to be tested is connected to the vehicle socket in advance;
- the message data is translated into After Chinese, analyze the consistency of the communication protocol between the two according to the preset rules, obtain and save the consistency analysis result of the communication protocol; obtain the control instruction, and simulate the vehicle fault state through each contact on the vehicle socket according to the control instruction;
- the test result of the interoperability test of the off-board charger to be tested is obtained according
- the present invention also provides an electronic device including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor implements the above method when the computer program is executed.
- the present invention also provides a computer-readable storage medium storing a computer program for executing the above method.
- the beneficial technical effects of the present invention are: automatic reading and translation of messages can be realized; test waveforms are automatically captured, and conclusions are automatically determined.
- the entire process does not require manual intervention, which greatly improves the efficiency of on-site detection and ensures the consistency of the test. , It saves manpower and cost, and improves the safety and accuracy of the test.
- Figure 1 is a schematic structural diagram of a DC charger detection system provided by an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of a detection device provided by an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a vehicle controller simulation device provided by an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of a DC charger detection system provided by an embodiment of the present invention.
- FIG. 5 is a schematic flowchart of a DC charger detection method provided by an embodiment of the present invention.
- FIG. 6 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention.
- the DC charger detection system may specifically include a vehicle controller simulation device, a detection device, and a main control machine;
- the charging gun of the vehicle is connected to simulate the vehicle BMS control system, and the message data interaction is established with the off-board charger to be tested through the CAN line in the charging gun; and the vehicle is passed through the vehicle according to the received control instruction
- Each contact on the socket simulates the fault state of the vehicle;
- the detection device is respectively connected with the vehicle controller simulation device and the off-board charger to be tested, and is used to obtain the vehicle controller simulation device and the non-vehicle to be tested
- the communication message data between the on-board chargers is translated into a predetermined format and then the communication protocol consistency between the two is analyzed according to the preset rules, and the communication protocol consistency analysis result is obtained and saved; and, collecting
- the vehicle controller simulation device simulates the waveform detection signal of each contact in the vehicle fault state and the contactor signal or front-end voltage of the non-vehicle charger to be tested through each contact on the vehicle socket according
- the predetermined format can be Chinese.
- the DC charger detection system provided by the present invention can be mainly applied to communication protocol consistency detection and interoperability test automation detection; in actual work, the communication protocol consistency detection system
- the basis for comparison can be based on the standard GB/T34657.1-2017 "Electric Vehicle Conductive Charging Interoperability Test Specification” and GB/T 34658-2017 "Communication Protocol between Electric Vehicle Off-board Conductive Charger and Battery Management System”
- the methods and requirements for DC charger detection proposed in "Conformance Test” can also be selected according to actual needs in other comparison methods for detection, and the present invention is not further limited here.
- the vehicle socket may include multiple sets of control circuits, the control circuit is used to control the on-off state of the contacts on the vehicle socket through a control switch according to the control instruction; the number of the control circuits Equal to the number of contacts on the vehicle socket; the contacts on the vehicle socket include DC+ contacts, DC- contacts, PE contacts, S+ contacts, S- contacts, CC1 contacts, CC2 contacts, A+ Contact, A-contact.
- a collection interface is provided on both sides of the control switch; the detection device collects through the collection interface, and the vehicle controller simulation device simulates a vehicle failure state through each contact on the vehicle socket according to the control instruction,
- the control switch corresponds to the waveform detection signal and the current signal of the contact.
- each contact of the charging interface can be simulated and simulated to meet the requirements of DC+, DC-, PE, S+, S-, CC1, CC2, A+, A- each contact and switch
- the simulation simulation of S on and off realizes the simulation of each fault state; based on the consideration of the data acquisition of each switch, a 4mm standard acquisition interface is designed on both sides of each switch to facilitate the acquisition of information by the wave recording module.
- the detection device has R1 resistance, R2 resistance, and R3 resistance simulation modules. The resistance values of R1, R2, and R3 can be changed by closing different switches, and the equivalent resistance value can be simulated to achieve the nominal value.
- the detection device has a pull-up voltage U1 simulation function at detection point 1, which can simulate the pull-up voltage at detection point 1.
- the device is equipped with a low-voltage auxiliary power access interface, which can realize the access function of the low-voltage auxiliary power supply of the charging pile, and simulate the A+ and A- low-voltage auxiliary power functions of the DC charging pile; meet the charging interface DC+ to PE, DC-to PE insulation Fault state simulation function; can realize the simulation simulation of the charging interface S+, S-, CC1, CC2, A+, and A-
- K1, K2, K3, K4 switch S signal collection interfaces to realize the collection of the on-off status of each interface
- the equipment has a built-in high-precision current sensor that can realize current collection.
- the vehicle controller simulation device may include a vehicle BMS simulation circuit, a vehicle control simulation circuit, and a vehicle socket; the vehicle BMS simulation circuit is used to simulate a vehicle BMS control system , And establish message data interaction with the off-board charger to be tested through the vehicle socket and the CAN line in the charging gun of the off-board charger to be tested; the vehicle control simulation circuit is used for receiving control instructions The vehicle fault state is simulated through each contact on the vehicle socket; the vehicle socket is used to provide an interactive interface between the vehicle controller simulation device and the off-board charger to be tested.
- the function of this structure is to verify whether the charger can communicate with the BMS safely and reliably, and whether the communication protocol meets the requirements of the standard; for this reason, a test platform for the consistency of the communication protocol is built through the above-mentioned DC charger detection system, and the CAN bus
- the equipment and message translation software are integrated to improve detection efficiency.
- the charging socket is connected to the charging gun, and the CAN line in the charging gun is used to collect the message content in real time, without the need for an external CAN box and CAN line; while automatically reading the message, the message is translated into Chinese, and Analyze each message to determine whether the communication message meets the requirements of the standard. And save the communication message to the system to ensure the integrity of the test results, facilitate the on-site inspection personnel to trace back the data, and greatly improve the inspection efficiency.
- the detection system further includes a load module and a battery simulation device; the load module is connected to the vehicle controller simulation device for simulating the vehicle load;
- the battery simulation device is connected to the vehicle controller simulation device for simulating the vehicle battery module;
- the detection device includes a current sensor, and the current sensor is used to collect the off-board charger to be tested The first current signal between the vehicle controller simulation device and the load module, the third current signal between the vehicle controller simulation device and the battery simulation device Current signal; the detection device compares the first current signal, the second current signal, and the third current signal with a preset threshold value, and obtains the test result of the charging test of the off-board charger to be tested according to the comparison result .
- the DC charger detection system can effectively detect the charging efficiency and related working conditions of the charging pile.
- the detection device may further include a plurality of detection units and a plurality of isolation switches, and the detection units are connected to each other and controlled to be disconnected by the isolation switch;
- the detection unit includes a charging pile output socket, DC power inlet, DC power output, control communication bus interface, DC voltage display, auxiliary voltage display, detection point 1 display, AC emergency stop interface, DC emergency stop interface, communication monitoring interface, K1K2 signal interface, A+A- Interface, front-end voltage interface, emergency stop button, insulation resistance adjustment, etc.
- the above-mentioned detection units are connected to each other based on their combined functions and isolation switches to work together; those skilled in the art can choose to use them according to actual needs, and the present invention does not make too many restrictions here.
- the present invention also provides a DC charger detection method, the method includes: S501 pre-connect the vehicle socket with the charging gun of the off-board charger to be tested, and use the simulated vehicle BMS control system to pass the The CAN line in the charging gun establishes a message data interaction with the off-board charger to be tested; S502 acquires the communication message data between the simulated vehicle BMS control system and the off-board charger to be tested, and transfers the message data After translating into Chinese, analyze the consistency of the communication protocol between the two according to the preset rules, obtain and save the consistency analysis result of the communication protocol; S503 obtain the control instruction, and simulate the vehicle through each contact on the vehicle socket according to the control instruction Fault state; S504 collects the waveform detection signal of each contact in the simulated vehicle fault state and the contactor signal or front-end voltage of the non-vehicle charger to be tested; S505 calculates the waveform detection signal and the contactor signal or front-end According to the difference between the voltages, a detection result of the
- the present invention also provides an electronic device including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor implements the above method when the computer program is executed.
- the present invention also provides a computer-readable storage medium storing a computer program for executing the above method.
- the beneficial technical effects of the present invention are: automatic reading and translation of messages can be realized; test waveforms are automatically captured, and conclusions are automatically determined.
- the entire process does not require manual intervention, which greatly improves the efficiency of on-site detection and ensures the consistency of the test. , It saves manpower and cost, and improves the safety and accuracy of the test.
- the electronic device 600 may further include: a communication module 110, an input unit 120, an audio processing unit 130, a display 160, and a power supply 170. It is worth noting that the electronic device 600 does not necessarily include all the components shown in FIG. 6; in addition, the electronic device 600 may also include components not shown in FIG. 6, which can refer to the prior art.
- the central processing unit 100 is sometimes called a controller or operating control, and may include a microprocessor or other processor devices and/or logic devices.
- the central processing unit 100 receives inputs and controls various components of the electronic device 600. Operation of components.
- the memory 140 may be, for example, one or more of a cache, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable devices.
- the above-mentioned information related to the failure can be stored, and the program for executing the related information can also be stored.
- the central processing unit 100 can execute the program stored in the memory 140 to realize information storage or processing.
- the input unit 120 provides input to the central processing unit 100.
- the input unit 120 is, for example, a button or a touch input device.
- the power supply 170 is used to provide power to the electronic device 600.
- the display 160 is used for displaying display objects such as images and characters.
- the display may be, for example, an LCD display, but it is not limited thereto.
- the memory 140 may be a solid-state memory, for example, read only memory (ROM), random access memory (RAM), SIM card, etc. It may also be a memory that saves information even when the power is off, can be selectively erased and is provided with more data, and an example of this memory is sometimes referred to as EPROM or the like.
- the memory 140 may also be some other type of device.
- the memory 140 includes a buffer memory 141 (sometimes referred to as a buffer).
- the memory 140 may include an application/function storage unit 142, which is used to store application programs and function programs or to execute the operation flow of the electronic device 600 through the central processing unit 100.
- the memory 140 may further include a data storage unit 143 for storing data, such as contacts, digital data, pictures, sounds, and/or any other data used by electronic devices.
- the driver storage part 144 of the memory 140 may include various drivers for the communication function of the electronic device and/or for executing other functions of the electronic device (such as a messaging application, an address book application, etc.).
- the communication module 110 is a transmitter/receiver 110 that transmits and receives signals via the antenna 111.
- the communication module (transmitter/receiver) 110 is coupled to the central processing unit 100 to provide input signals and receive output signals, which can be the same as that of a conventional mobile communication terminal.
- multiple communication modules 110 may be provided in the same electronic device, such as a cellular network module, a Bluetooth module, and/or a wireless local area network module.
- the communication module (transmitter/receiver) 110 is also coupled to the speaker 131 and the microphone 132 via the audio processor 130 to provide audio output via the speaker 131 and receive audio input from the microphone 132, thereby realizing general telecommunication functions.
- the audio processor 130 may include any suitable buffers, decoders, amplifiers, etc.
- the audio processor 130 is also coupled to the central processing unit 100, so that the microphone 132 can be used to record on the unit, and the speaker 131 can be used to play the sound stored on the unit.
- the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may adopt 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 codes.
- computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
- These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
- the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
- These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
- the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
一种直流充电机检测系统及方法，系统包含：车辆控制器模拟装置模拟车辆BMS控制系统，通过充电枪内的CAN线与待测非车载充电机建立报文数据交互；根据接收到的控制指令通过车辆插座上各个触点模拟车辆故障状态；检测装置获取车辆控制器模拟装置与待测非车载充电机之间的通信报文数据，将报文数据转译为预定格式后按预设规则分析两者之间的通信协议一致性，获得通信协议一致性分析结果并保存；采集各个触点模拟车辆故障状态下各个触点的波形检测信号及待测非车载充电机的接触器信号或前端电压；通过波形检测信号与接触器信号或前端电压之间的差值与预设阈值的比较结果获得待测非车载充电机的互操作试验检测结果；主控机输出控制指令。
Description
本发明涉及车辆充电设备检测领域，尤指一种直流充电机检测系统及方法。
在国家相关政策推动下，新能源电动汽车广泛普及，配套基础充电设施建设数量也实现了飞速增长。在此过程中凸显了诸多充电兼容性与安全性较差的问题，这对严把检测质量提出了更高要求。另外，电动汽车充电站也需定期的检测，这就对提高检测设备的自动化水平和检测人员的工作效率提出了更加迫切的要求。
传统的充电设施检测方法，需要外接设备的种类多且复杂，需要人工接线，花费时间长，以致检测效率低，容易出现误接线现象，造成人身伤害和设备损坏。在互操作试验过程中需要使用示波器手动抓取每项试验的波形，稳定性差，人为因素影响较大，不适合现场检测；在通信协议一致性试验过程中，需要外接CAN盒读取报文，并且无报文翻译功能，还要对照标准逐条翻译报文，严重影响了检测效率。
发明内容
本发明目的在于提供一种适合现场检测的直流充电机检测系统及方法，能够实现自动读取、翻译报文；自动抓取测试波形，自动判别结论，整个流程不需要人工干预，以此有效提高了现场检测效率。
为达上述目的，本发明所提供的直流充电机检测系统，具体包含车辆控制器模拟装置、检测装置和主控机；所述车辆控制器模拟装置通过车辆插座与待测非车载充电机的充电枪相接，用于模拟车辆BMS控制系统，并通过所述充电枪内的CAN线与待测非车载充电机建立报文数据交互；以及，根据接收到的控制指令通过所述车辆插座上各个触点模拟车辆故障状态；所述检测装置分别与所述车辆控制器模拟装置和所述待测非车载充电机相连，用于获取所述车辆控制器模拟装置与所述待测非车载充电机之间的通信报文数据，将所述报文数据转译为预定格式后按预设规则分析两者之间的通信协议一致性，获得通信协议一致性分析结果并保存；以及，采集所述车辆控制器模拟装置根据所述控制指令通过所述车辆插座上各个触点模拟车辆故障状态下各个触点的波形检测信号及所述待测非车载充电机的接触器信号或前端电压；计算所述波形检测信号与接触器信 号或前端电压之间的差值，根据所述差值与预设阈值的比较结果获得所述待测非车载充电机的互操作试验检测结果；所述主控机与所述车辆控制器模拟装置，用于输出控制指令。
本发明还提供一种直流充电机检测方法，所述方法包含：获取模拟车辆BMS控制系统与所述待测非车载充电机之间的通信报文数据；模拟车辆BMS控制系统预先通过待测非车载充电机的充电枪内的CAN线与待测非车载充电机建立有报文数据交互；所述待测非车载充电机的充电枪预先与车辆插座相接；将所述报文数据转译为中文后按预设规则分析两者之间的通信协议一致性，获得通信协议一致性分析结果并保存；获取控制指令，根据所述控制指令通过所述车辆插座上各个触点模拟车辆故障状态；采集各个触点模拟车辆故障状态下各个触点的波形检测信号及所述待测非车载充电机的接触器信号或前端电压；计算所述波形检测信号与接触器信号或前端电压之间的差值，根据所述差值与预设阈值的比较结果获得所述待测非车载充电机的互操作试验检测结果。
本发明还提供一种电子设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现上述方法。
本发明还提供一种计算机可读存储介质，所述计算机可读存储介质存储有执行上述方法的计算机程序。
本发明的有益技术效果在于：能够实现自动读取、翻译报文；自动抓取测试波形，自动判别结论，整个流程不需要人工干预，极大的提高了现场检测效率，保证了试验的一致性，节省了人力和成本，提高了试验的安全性和准确性。
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，并不构成对本发明的限定。在附图中：
图1为本发明一实施例所提供的直流充电机检测系统的结构示意图；
图2为本发明一实施例所提供的检测装置的结构示意图；
图3为本发明一实施例所提供的车辆控制器模拟装置的结构示意图；
图4为本发明一实施例所提供的直流充电机检测系统的结构示意图；
图5为本发明一实施例所提供的直流充电机检测方法的流程示意图；
图6为本发明一实施例所提供的电子设备的结构示意图。
以下将结合附图及实施例来详细说明本发明的实施方式，借此对本发明如何应用技术手段来解决技术问题，并达成技术效果的实现过程能充分理解并据以实施。需要说明的是，只要不构成冲突，本发明中的各个实施例及各实施例中的各个特征可以相互结合，所形成的技术方案均在本发明的保护范围之内。
在本说明书的描述中，所使用的“包含”、“包括”、“具有”、“含有”等，均为开放性的用语，即意指包含但不限于。参考术语“一个实施例”、“一个具体实施例”、“一些实施例”、“例如”等的描述意指结合该实施例或示例描述的具体特征、结构或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。各实施例中涉及的步骤顺序用于示意性说明本申请的实施，其中的步骤顺序不作限定，可根据需要作适当调整。
另外，在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机系统中执行，并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
请参考图1所示，本发明所提供的直流充电机检测系统，具体可包含车辆控制器模拟装置、检测装置和主控机；所述车辆控制器模拟装置通过车辆插座与待测非车载充电机的充电枪相接，用于模拟车辆BMS控制系统，并通过所述充电枪内的CAN线与待测非车载充电机建立报文数据交互；以及，根据接收到的控制指令通过所述车辆插座上各个触点模拟车辆故障状态；所述检测装置分别与所述车辆控制器模拟装置和所述待测非车载充电机相连，用于获取所述车辆控制器模拟装置与所述待测非车载充电机之间的通信报文数据，将所述报文数据转译为预定格式后按预设规则分析两者之间的通信协议一致性，获得通信协议一致性分析结果并保存；以及，采集所述车辆控制器模拟装置根据所述控制指令通过所述车辆插座上各个触点模拟车辆故障状态下各个触点的波形检测信号及所述待测非车载充电机的接触器信号或前端电压；计算所述波形检测信号与接触器信号或前端电压之间的差值，根据所述差值与预设阈值的比较结果获得所述待测非车载充电机的互操作试验检测结果；所述主控机与所述车辆控制器模拟装置，用于输出控制指令。其中，所述预定格式可为中文，以此，本发明所提供的直流充电机检测系统主要可应用于通信协议一致性检测和互操作试验自动化检测；实际工作中，所述通信协议一致性检测的比对依据可根据标准GB/T34657.1-2017《电动汽车传导充电互操作性测试规 范》和GB/T 34658-2017《电动汽车非车载传导式充电机与电池管理系统之间的通信协议一致性测试》提出的直流充电机检测的方法和要求执行，也可根据实际需求选择其他比对方式进行检测，本发明在此不做进一步限定。
在上述实施例中，所述车辆插座可包含多组控制电路，所述控制电路用于根据所述控制指令通过控制开关控制所述车辆插座上触点的通断状态；所述控制电路的数量等于所述车辆插座上触点的数量；所述车辆插座上触点包含DC+触点、DC-触点、PE触点、S+触点、S-触点、CC1触点、CC2触点、A+触点、A-触点。其中，所述控制开关两侧设有采集接口；所述检测装置通过所述采集接口采集所述车辆控制器模拟装置根据所述控制指令通过所述车辆插座上各个触点模拟车辆故障状态下，所述控制开关对应触点的波形检测信号及电流信号。具体的，在实际工作中，利用标准充电枪插座，可对充电接口各个触点仿真模拟，满足DC+、DC-、PE、S+、S-、CC1、CC2、A+、A-各个触点及开关S通断的仿真模拟，实现各路故障状态仿真；基于每一路开关的数据采集上的考虑，在每路开关两侧设计4mm标准采集接口，方便录波模块采集信息。具体可参考图2所示，检测装置带有R1电阻、R2电阻、R3电阻仿真模块，可通过闭合不同开关实现R1、R2、R3阻值的变化，可模拟等效电阻值可实现标称值1000Ω、最大值1030Ω、最小值970Ω及上限值2000Ω、下限值500Ω共计5个档；检测装置设有检测点1处上拉电压U1仿真模拟功能，可模拟检测点1处的上拉电压U1电压值；设备配备低压辅助电源接入接口，可以实现充电桩低压辅助电源的接入功能，仿真直流充电桩A+、A-低压辅助电源功能；满足充电接口DC+对PE、DC-对PE绝缘故障状态仿真功能；可实现充电接口S+、S-、CC1、CC2、A+、A-各路对地故障状态仿真模拟；设备可模拟K1、K2、K3、K4、开关S吸合状态，并带有K1、K2、K3、K4、开关S信号采集接口，实现各个接口通断状态的采集；设备内置高精度电流传感器，可实现电流采集。值得说明的是，该图2中描述的电路结构仅为便于理解本发明所提供的发明构思，实际工作中，本领域相关技术人员可根据实际需要选择调整或相应修改该电路结构中的元件位置，布局方式及连接关系，本发明在此不做进一步限定。
请参考图3所示，在本发明一实施例中，所述车辆控制器模拟装置可包含车辆BMS模拟电路、车辆控制模拟电路和车辆插座；所述车辆BMS模拟电路用于模拟车辆BMS控制系统，并通过所述车辆插座和所述待测非车载充电机的充电枪内的CAN线与待测非车载充电机建立报文数据交互；所述车辆控制模拟电路用于根据接收到的控制指令通过所述车辆插座上各个触点模拟车辆故障状态；所述车辆插座用于提供所述车辆控制器 模拟装置与所述待测非车载充电机的交互接口。该结构的作用在于验证充电机是否能与BMS进行安全、可靠地通信，通信协议是否满足标准的要求；为此，通过上述直流充电机检测系统搭建通信协议一致性的测试平台，并将CAN总线设备和报文翻译软件进行集成，以此提高检测效率。在实际工作中，充电插座与充电枪连接，利用充电枪内的CAN线实时的采集报文内容，无需外接CAN盒和CAN线；自动读取报文的同时，将报文翻译成中文，并对每一条报文进行分析，判断通信报文是否满足标准的要求。并将通信报文保存至系统，保证了试验结果的完整性，方便现场检测人员回溯数据，极大地提高了检测效率。
请参考图4所示，在本发明一实施例中，所述检测系统还包含负载模块和电池模拟装置；所述负载模块与所述车辆控制器模拟装置相连，用于模拟车辆负载；所述电池模拟装置与所述车辆控制器模拟装置相连，用于模拟车辆电池模组；在该实施例中，所述检测装置包含电流传感器，所述电流传感器用于采集所述待测非车载充电机与供电交流电源之间的第一电流信号，所述车辆控制器模拟装置与所述负载模块之间的第二电流信号，所述车辆控制器模拟装置与所述电池模拟装置之间的第三电流信号；所述检测装置将所述第一电流信号、所述第二电流信号和所述第三电流信号分别与预设阈值比较，根据比较结果获得待测非车载充电机的充电试验检测结果。以此，通过所述直流充电机检测系统可有效检测充电桩的充电效率及相关工况。
在上述实施例中，所述检测装置还可包含多个检测单元和多个隔离开关，所述检测单元彼此互相连接并通过所述隔离开关控制开断；所述检测单元包含充电桩输出插座、直流电源接入口、直流电源输出口、控制通信总线接口、直流电压显示、辅助电压显示、检测点1显示、交流急停接口、直流急停接口、通信监测接口、K1K2信号接口、A+A-接口、前端电压接口、急停按钮、绝缘电阻调节等。实际工作中，上述各检测单元基于其组合实现的功能以及隔离开关彼此相互连接，配合工作；本领域相关技术人员可根据实际需要选择使用，本发明在此不做过多限制。
请参考图5所示，本发明还提供一种直流充电机检测方法，所述方法包含：S501将车辆插座与待测非车载充电机的充电枪预先相接，利用模拟车辆BMS控制系统通过所述充电枪内的CAN线与待测非车载充电机建立报文数据交互；S502获取模拟车辆BMS控制系统与所述待测非车载充电机之间的通信报文数据，将所述报文数据转译为中文后按预设规则分析两者之间的通信协议一致性，获得通信协议一致性分析结果并保存；S503获取控制指令，根据所述控制指令通过所述车辆插座上各个触点模拟车辆故障状 态；S504采集各个触点模拟车辆故障状态下各个触点的波形检测信号及所述待测非车载充电机的接触器信号或前端电压；S505计算所述波形检测信号与接触器信号或前端电压之间的差值，根据所述差值与预设阈值的比较结果获得所述待测非车载充电机的互操作试验检测结果。以此完成待测非车载充电机的通信协议一致性检测和互操作试验自动化检测，当然实际工作中，本领域相关技术人员也可根据实际需要仅选择其中的一种检测方式进行检测，本发明在此并不做过多限制。
本发明还提供一种电子设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现上述方法。
本发明还提供一种计算机可读存储介质，所述计算机可读存储介质存储有执行上述方法的计算机程序。
本发明的有益技术效果在于：能够实现自动读取、翻译报文；自动抓取测试波形，自动判别结论，整个流程不需要人工干预，极大的提高了现场检测效率，保证了试验的一致性，节省了人力和成本，提高了试验的安全性和准确性。
如图6所示，该电子设备600还可以包括：通信模块110、输入单元120、音频处理单元130、显示器160、电源170。值得注意的是，电子设备600也并不是必须要包括图6中所示的所有部件；此外，电子设备600还可以包括图6中没有示出的部件，可以参考现有技术。
如图6所示，中央处理器100有时也称为控制器或操作控件，可以包括微处理器或其他处理器装置和/或逻辑装置，该中央处理器100接收输入并控制电子设备600的各个部件的操作。
其中，存储器140，例如可以是缓存器、闪存、硬驱、可移动介质、易失性存储器、非易失性存储器或其它合适装置中的一种或更多种。可储存上述与失败有关的信息，此外还可存储执行有关信息的程序。并且中央处理器100可执行该存储器140存储的该程序，以实现信息存储或处理等。
输入单元120向中央处理器100提供输入。该输入单元120例如为按键或触摸输入装置。电源170用于向电子设备600提供电力。显示器160用于进行图像和文字等显示对象的显示。该显示器例如可为LCD显示器，但并不限于此。
该存储器140可以是固态存储器，例如，只读存储器(ROM)、随机存取存储器(RAM)、SIM卡等。还可以是这样的存储器，其即使在断电时也保存信息，可被选择性地擦除且设有更多数据，该存储器的示例有时被称为EPROM等。存储器140还可以 是某种其它类型的装置。存储器140包括缓冲存储器141(有时被称为缓冲器)。存储器140可以包括应用/功能存储部142，该应用/功能存储部142用于存储应用程序和功能程序或用于通过中央处理器100执行电子设备600的操作的流程。
存储器140还可以包括数据存储部143，该数据存储部143用于存储数据，例如联系人、数字数据、图片、声音和/或任何其他由电子设备使用的数据。存储器140的驱动程序存储部144可以包括电子设备的用于通信功能和/或用于执行电子设备的其他功能(如消息传送应用、通讯录应用等)的各种驱动程序。
通信模块110即为经由天线111发送和接收信号的发送机/接收机110。通信模块(发送机/接收机)110耦合到中央处理器100，以提供输入信号和接收输出信号，这可以和常规移动通信终端的情况相同。
基于不同的通信技术，在同一电子设备中，可以设置有多个通信模块110，如蜂窝网络模块、蓝牙模块和/或无线局域网模块等。通信模块(发送机/接收机)110还经由音频处理器130耦合到扬声器131和麦克风132，以经由扬声器131提供音频输出，并接收来自麦克风132的音频输入，从而实现通常的电信功能。音频处理器130可以包括任何合适的缓冲器、解码器、放大器等。另外，音频处理器130还耦合到中央处理器100，从而使得可以通过麦克风132能够在本机上录音，且使得可以通过扬声器131来播放本机上存储的声音。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述的具体实施例，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施例而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (10)
- 一种直流充电机检测系统，其特征在于，所述系统包含车辆控制器模拟装置、检测装置和主控机；所述车辆控制器模拟装置通过车辆插座与待测非车载充电机的充电枪相接，用于模拟车辆BMS控制系统，并通过所述充电枪内的CAN线与待测非车载充电机建立报文数据交互；以及，根据接收到的控制指令通过所述车辆插座上各个触点模拟车辆故障状态；所述检测装置分别与所述车辆控制器模拟装置和所述待测非车载充电机相连，用于获取所述车辆控制器模拟装置与所述待测非车载充电机之间的通信报文数据，将所述报文数据转译为预定格式后按预设规则分析两者之间的通信协议一致性，获得通信协议一致性分析结果并保存；以及，采集所述车辆控制器模拟装置根据所述控制指令通过所述车辆插座上各个触点模拟车辆故障状态下各个触点的波形检测信号及所述待测非车载充电机的接触器信号或前端电压；计算所述波形检测信号与接触器信号或前端电压之间的差值，根据所述差值与预设阈值的比较结果获得所述待测非车载充电机的互操作试验检测结果；所述主控机与所述车辆控制器模拟装置，用于输出控制指令。
- 根据权利要求1所述的直流充电机检测系统，其特征在于，所述车辆控制器模拟装置包含车辆BMS模拟电路、车辆控制模拟电路和车辆插座；所述车辆BMS模拟电路用于模拟车辆BMS控制系统，并通过所述车辆插座和所述待测非车载充电机的充电枪内的CAN线与待测非车载充电机建立报文数据交互；所述车辆控制模拟电路用于根据接收到的控制指令通过所述车辆插座上各个触点模拟车辆故障状态；所述车辆插座用于提供所述车辆控制器模拟装置与所述待测非车载充电机的交互接口。
- 根据权利要求1所述的直流充电机检测系统，其特征在于，所述检测系统还包含负载模块和电池模拟装置；所述负载模块与所述车辆控制器模拟装置相连，用于模拟车辆负载；所述电池模拟装置与所述车辆控制器模拟装置相连，用于模拟车辆电池模组。
- 根据权利要求3所述的直流充电机检测系统，其特征在于，所述检测装置包含电流传感器，所述电流传感器用于采集所述待测非车载充电机与供电交流电源之间的第一电流信号，所述车辆控制器模拟装置与所述负载模块之间的第二电流信号，所述车辆控 制器模拟装置与所述电池模拟装置之间的第三电流信号；所述检测装置将所述第一电流信号、所述第二电流信号和所述第三电流信号分别与预设阈值比较，根据比较结果获得待测非车载充电机的充电试验检测结果。
- 根据权利要求1所述的直流充电机检测系统，其特征在于，所述检测装置包含多个检测单元和多个隔离开关，所述检测单元彼此互相连接并通过所述隔离开关控制开断；所述检测单元包含充电桩输出插座、直流电源接入口、直流电源输出口、控制通信总线接口、直流电压显示、辅助电压显示、检测点1显示、交流急停接口、直流急停接口、通信监测接口、K1K2信号接口、A+A-接口、前端电压接口、急停按钮、绝缘电阻调节。
- 根据权利要求1所述的直流充电机检测系统，其特征在于，所述车辆插座包含多组控制电路，所述控制电路用于根据所述控制指令通过控制开关控制所述车辆插座上触点的通断状态；所述控制电路的数量等于所述车辆插座上触点的数量；所述车辆插座上触点包含DC+触点、DC-触点、PE触点、S+触点、S-触点、CC1触点、CC2触点、A+触点、A-触点。
- 根据权利要求6所述的直流充电机检测系统，其特征在于，所述控制开关两侧设有采集接口；所述检测装置通过所述采集接口采集所述车辆控制器模拟装置根据所述控制指令通过所述车辆插座上各个触点模拟车辆故障状态下，所述控制开关对应触点的波形检测信号及电流信号。
- 一种直流充电机检测方法，其特征在于，所述方法包含：获取模拟车辆BMS控制系统与待测非车载充电机之间的通信报文数据；模拟车辆BMS控制系统预先通过待测非车载充电机的充电枪内的CAN线与待测非车载充电机建立有报文数据交互；所述待测非车载充电机的充电枪预先与车辆插座相接；将所述报文数据转译为预定格式后按预设规则分析两者之间的通信协议一致性，获得通信协议一致性分析结果并保存；获取控制指令，根据所述控制指令通过所述车辆插座上各个触点模拟车辆故障状态；采集各个触点模拟车辆故障状态下各个触点的波形检测信号及所述待测非车载充电机的接触器信号或前端电压；计算所述波形检测信号与接触器信号或前端电压之间的差值，根据所述差值与预设阈值的比较结果获得所述待测非车载充电机的互操作试验检测结果。
- 一种电子设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，其特征在于，所述处理器执行所述计算机程序时实现权利要求8所述方法。
- 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有执行权利要求8所述方法的计算机程序。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010273879.2 | 2020-04-09 | ||
| CN202010273879.2A CN111551799A (zh) | 2020-04-09 | 2020-04-09 | 直流充电机检测系统及方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021203714A1 true WO2021203714A1 (zh) | 2021-10-14 |
Family
ID=72007386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2020/131676 WO2021203714A1 (zh) | 2020-04-09 | 2020-11-26 | 直流充电机检测系统及方法 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111551799A (zh) |
| WO (1) | WO2021203714A1 (zh) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114047401A (zh) * | 2021-11-29 | 2022-02-15 | 国网北京市电力公司 | 一种直流充电桩测试仪的自动检测装置 |
| CN114043874A (zh) * | 2021-11-08 | 2022-02-15 | 岚图汽车科技有限公司 | 下电保护系统、方法、电动汽车、电子设备和存储介质 |
| CN114113833A (zh) * | 2021-11-11 | 2022-03-01 | 阳光电源股份有限公司 | 充电桩、充电桩线路检测方法及装置 |
| CN114137333A (zh) * | 2021-11-11 | 2022-03-04 | 长春一汽富晟集团有限公司 | 一种电动汽车直流充电模式测试装置与对比方法 |
| CN114295921A (zh) * | 2021-12-31 | 2022-04-08 | 西安班特利奥能源科技有限公司 | 一种充电桩性能检测系统、方法、设备及存储介质 |
| CN115078864A (zh) * | 2022-05-31 | 2022-09-20 | 中国第一汽车股份有限公司 | 电动汽车高压测试系统、车辆、测试方法及存储介质 |
| CN115257448A (zh) * | 2022-06-24 | 2022-11-01 | 智己汽车科技有限公司 | 一种电动汽车直流充电过程监测系统及监测方法 |
| CN116170356A (zh) * | 2023-02-22 | 2023-05-26 | 华中科技大学 | 用于电动车辆充电的通信合规测试方法及系统 |
| WO2023103910A1 (zh) * | 2021-12-10 | 2023-06-15 | 深圳市道通合创数字能源有限公司 | 一种故障模拟装置、系统以及交流充电桩 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551799A (zh) * | 2020-04-09 | 2020-08-18 | 国网冀北电力有限公司计量中心 | 直流充电机检测系统及方法 |
| CN112014673B (zh) * | 2020-08-31 | 2023-10-20 | 广东电网有限责任公司广州供电局 | 直流充电桩检测设备、方法 |
| CN112362983A (zh) * | 2020-10-10 | 2021-02-12 | 东风时代(武汉)电池系统有限公司 | 电池管理系统诊断方法、上位机及系统 |
| CN113671372B (zh) * | 2021-08-25 | 2024-06-14 | 武汉元丰汽车电控系统股份有限公司 | 回油泵电机检测方法、系统、装置、控制器以及存储介质 |
| CN113866546B (zh) * | 2021-10-08 | 2022-11-15 | 成都产品质量检验研究院有限责任公司 | 一种非车载充电机协议一致性测试及其报文自动解析系统 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006050759A (ja) * | 2004-08-04 | 2006-02-16 | Hitachi Industries Co Ltd | 自動試験装置 |
| CN107255759A (zh) * | 2017-06-09 | 2017-10-17 | 国网重庆市电力公司电力科学研究院 | 一种电动汽车交流充电桩自动检测系统 |
| CN109116132A (zh) * | 2018-06-15 | 2019-01-01 | 国网电动汽车服务有限公司 | 一种充电设备远程检测系统及其检测方法 |
| CN109212351A (zh) * | 2018-09-12 | 2019-01-15 | 国网重庆市电力公司电力科学研究院 | 一种电动汽车非车载充电机自动检测系统及方法 |
| CN109444566A (zh) * | 2018-09-03 | 2019-03-08 | 中国电力科学研究院有限公司 | 一种电动汽车充电设施检测设备和方法 |
| CN111551799A (zh) * | 2020-04-09 | 2020-08-18 | 国网冀北电力有限公司计量中心 | 直流充电机检测系统及方法 |
| CN212391553U (zh) * | 2020-04-09 | 2021-01-22 | 国网冀北电力有限公司计量中心 | 直流充电机检测系统 |
-
2020
- 2020-04-09 CN CN202010273879.2A patent/CN111551799A/zh active Pending
- 2020-11-26 WO PCT/CN2020/131676 patent/WO2021203714A1/zh active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006050759A (ja) * | 2004-08-04 | 2006-02-16 | Hitachi Industries Co Ltd | 自動試験装置 |
| CN107255759A (zh) * | 2017-06-09 | 2017-10-17 | 国网重庆市电力公司电力科学研究院 | 一种电动汽车交流充电桩自动检测系统 |
| CN109116132A (zh) * | 2018-06-15 | 2019-01-01 | 国网电动汽车服务有限公司 | 一种充电设备远程检测系统及其检测方法 |
| CN109444566A (zh) * | 2018-09-03 | 2019-03-08 | 中国电力科学研究院有限公司 | 一种电动汽车充电设施检测设备和方法 |
| CN109212351A (zh) * | 2018-09-12 | 2019-01-15 | 国网重庆市电力公司电力科学研究院 | 一种电动汽车非车载充电机自动检测系统及方法 |
| CN111551799A (zh) * | 2020-04-09 | 2020-08-18 | 国网冀北电力有限公司计量中心 | 直流充电机检测系统及方法 |
| CN212391553U (zh) * | 2020-04-09 | 2021-01-22 | 国网冀北电力有限公司计量中心 | 直流充电机检测系统 |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114043874A (zh) * | 2021-11-08 | 2022-02-15 | 岚图汽车科技有限公司 | 下电保护系统、方法、电动汽车、电子设备和存储介质 |
| CN114113833A (zh) * | 2021-11-11 | 2022-03-01 | 阳光电源股份有限公司 | 充电桩、充电桩线路检测方法及装置 |
| CN114137333A (zh) * | 2021-11-11 | 2022-03-04 | 长春一汽富晟集团有限公司 | 一种电动汽车直流充电模式测试装置与对比方法 |
| CN114137333B (zh) * | 2021-11-11 | 2023-12-05 | 长春一汽富晟集团有限公司 | 一种电动汽车直流充电模式测试装置与对比方法 |
| CN114113833B (zh) * | 2021-11-11 | 2024-05-14 | 阳光电源股份有限公司 | 充电桩、充电桩线路检测方法及装置 |
| CN114047401A (zh) * | 2021-11-29 | 2022-02-15 | 国网北京市电力公司 | 一种直流充电桩测试仪的自动检测装置 |
| WO2023103910A1 (zh) * | 2021-12-10 | 2023-06-15 | 深圳市道通合创数字能源有限公司 | 一种故障模拟装置、系统以及交流充电桩 |
| CN114295921A (zh) * | 2021-12-31 | 2022-04-08 | 西安班特利奥能源科技有限公司 | 一种充电桩性能检测系统、方法、设备及存储介质 |
| CN115078864A (zh) * | 2022-05-31 | 2022-09-20 | 中国第一汽车股份有限公司 | 电动汽车高压测试系统、车辆、测试方法及存储介质 |
| CN115257448A (zh) * | 2022-06-24 | 2022-11-01 | 智己汽车科技有限公司 | 一种电动汽车直流充电过程监测系统及监测方法 |
| CN115257448B (zh) * | 2022-06-24 | 2024-05-14 | 智己汽车科技有限公司 | 一种电动汽车直流充电过程监测系统及监测方法 |
| CN116170356A (zh) * | 2023-02-22 | 2023-05-26 | 华中科技大学 | 用于电动车辆充电的通信合规测试方法及系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111551799A (zh) | 2020-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021203714A1 (zh) | 直流充电机检测系统及方法 | |
| CN106556761B (zh) | 一种应用于现场的直流充电桩检测系统及方法 | |
| CN110134115B (zh) | 新能源车动力电池管理系统硬件在环测试平台及测试方法 | |
| CN212391553U (zh) | 直流充电机检测系统 | |
| CN110501998B (zh) | Bms硬件在环测试系统及测试方法 | |
| CN103954925A (zh) | 一种基于rtds实时仿真的故障录波器动态测试方法 | |
| CN109633458A (zh) | 车辆硬件在环测试系统及方法 | |
| CN103558849B (zh) | 一种纯电动汽车控制策略调试及网络测试的方法 | |
| CN203851294U (zh) | 扬声器可靠性测试装置 | |
| JP2010153050A (ja) | 電池特性模擬システム及び電池特性模擬装置 | |
| CN202256646U (zh) | 一种模拟遥信测控装置 | |
| CN113986701A (zh) | 应用于智能牵引变电系统的设备数据处理方法及装置 | |
| CN205486883U (zh) | 一种电力电缆故障测试教学系统 | |
| CN115856573B (zh) | 一种芯片量产测试的pd协议测试系统及其方法 | |
| CN203070094U (zh) | 一种电动汽车充电接口can通信测试标定设备 | |
| CN114091296B (zh) | 高压直流断路器的故障预警方法及装置 | |
| CN204758738U (zh) | 一种基于树莓派的自动开短路测试装置 | |
| CN204463223U (zh) | 一种大学外语教学口语测试系统 | |
| CN104615524B (zh) | 移动终端用的usb插拔测试方法 | |
| CN109857092B (zh) | Mpu单元试测设备及其检测方法 | |
| CN105872870B (zh) | 写入充电标志位的系统和方法 | |
| CN206756964U (zh) | 一种u盘检测装置 | |
| CN205068146U (zh) | 一种客车用风扇控制器全自动化测试系统 | |
| CN204143874U (zh) | 用于影音设备电磁兼容抗扰测试的声音监控系统 | |
| CN216901433U (zh) | 一种列车控制器测试装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20930329 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 20930329 Country of ref document: EP Kind code of ref document: A1 |