Three-electricity safety detection system, detection method and chassis dynamometer

Abstract

The invention provides a three-electricity safety detection system, a detection method and a chassis dynamometer. The three-electricity safety detection system comprises a local detection unit, a local server and a cloud platform, the local detection unit comprises at least one of OBD detection equipment, charging inspection equipment and a chassis dynamometer; the local detection unit is connected with the vehicle end; the local server is in communication connection with the local detection unit and is used for receiving detection data of the local detection unit; the cloud platform is in communication connection with the local server and is used for receiving and analyzing the detection data; wherein the system is configured to execute different detection modes by selecting different device combinations in the local detection unit. By selecting different equipment combinations and switching multiple detection modes such as charging detection, discharging detection or online monitoring, the problem that detection of single detection equipment is incomplete in the prior art is solved, and the local server or the cloud platform improves the detection accuracy by fusing multiple data.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a three-electric safety testing system, testing method, and chassis dynamometer. Background Technology

[0002] The three-electric system is the core of new energy vehicles, including the power battery, drive motor, and electronic control system. Safety testing of the three-electric system is crucial to the safety of the vehicle.

[0003] Currently, the testing method for the three-electric system is to use corresponding testing equipment to test any performance characteristic.

[0004] The above testing methods can only test a single performance aspect and cannot comprehensively evaluate the safety performance of a car. Summary of the Invention

[0005] In view of the above problems, embodiments of the present invention are proposed to provide a three-electric safety testing system, testing method and chassis dynamometer that overcomes or at least partially solves the above problems.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, embodiments of this application disclose a three-electric safety detection system, including: a local detection unit, a local server, and a cloud platform; The local testing unit includes at least one of: an OBD testing device, a charging testing device, and a chassis dynamometer; the local testing unit is connected to the vehicle. The local server is communicatively connected to the local detection unit and is used to receive detection data from the local detection unit. The cloud platform is communicatively connected to the local server and is used to receive and analyze the detection data; The system is configured to perform different detection modes by selecting different combinations of devices in the local detection unit.

[0007] Secondly, embodiments of this application disclose a method for detecting the safety of electrical components (batteries, motors, and electronic devices), the method comprising: In response to the detection mode determination command, the target detection mode is determined; Based on the target detection mode, the corresponding detection device in the local detection unit is controlled to execute a predefined detection process and acquire detection data; The test data is uploaded to the cloud platform so that the cloud platform can compare the test data with preset standards and generate test results for the three electrical components.

[0008] Thirdly, this application discloses a chassis dynamometer, including: a base, a front axle dynamometer unit, a rear axle dynamometer unit, a wheelbase adjustment mechanism, and a spline-type synchronization mechanism. The front axle dynamometer, the rear axle dynamometer, and the wheelbase adjustment mechanism are arranged on the base; the wheelbase adjustment mechanism is used to drive the front axle dynamometer and the rear axle dynamometer to move and adjust the wheelbase. The front axle dynamometer unit and the rear axle dynamometer unit are connected by a splined synchronization mechanism for synchronizing the front axle tires and the rear axle tires.

[0009] Fourthly, embodiments of this application disclose an electronic device, including: a processor connected to a memory; the memory being used to store a computer program; and the processor being used to execute the computer program stored in the memory to implement the steps in the method described in the second aspect.

[0010] Fifthly, embodiments of this application disclose a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method as described in the second aspect.

[0011] This application discloses a three-electric safety testing system, comprising: a local testing unit, a local server, and a cloud platform; the local testing unit includes at least one of an OBD testing device, a charging testing device, and a chassis dynamometer; the local testing unit is connected to the vehicle; the local server is communicatively connected to the local testing unit and is used to receive the testing data from the local testing unit; the cloud platform is communicatively connected to the local server and is used to receive and analyze the testing data; wherein, the system is configured to execute different testing modes by selecting different combinations of devices in the local testing unit. The testing system of this application can select different combinations of devices and switch between multiple testing modes such as charging testing, discharging testing, or online monitoring, solving the problem of incomplete testing by a single testing device in related technologies. Simultaneously, the testing data from the local testing unit in this application can be synchronized to the local server and the cloud platform, enabling the local server or cloud platform to comprehensively assess the safety of the three-electric system based on the testing data, and improving testing accuracy by integrating multiple data sources. Attached Figure Description

[0012] Figure 1 This application provides a three-electric safety detection system. Figure 2 This is a flowchart illustrating the steps of a safety testing method for electrical, electronic, and battery systems provided in an embodiment of this application. Figure 3 This is a schematic diagram of a charging testing device provided in an embodiment of this application; Figure 4This is an internal schematic diagram of a charging testing device provided in an embodiment of this application; Figure 5 This is a schematic diagram of an OBD detection principle provided in an embodiment of this application; Figure 6 This is a flowchart of a charging detection process provided in an embodiment of this application; Figure 7 This is a flowchart illustrating the process of uploading discharge safety detection results, provided in an embodiment of this application. Figure 8 This is a flowchart of an electrical safety testing process provided in an embodiment of this application; Figure 9 This is a schematic diagram of a communication connection provided in an embodiment of this application; Figure 10 This is a structural diagram of a chassis dynamometer provided in an embodiment of this application; Figure 11 This is a block diagram of a three-electric safety detection device provided in an embodiment of this application; Figure 12 This is a block diagram of an electronic device provided in an embodiment of this application; Figure 13 This is a schematic diagram of another electronic device provided in the embodiments of this application.

[0013] Figure label: 11-Base; 12-One-side protective cover; 13-Left dynamometer; 14-The other-side protective cover; 15-Right dynamometer. Detailed Implementation

[0014] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0015] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, the term "and / or" in the specification and claims is used to describe the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0016] refer to Figure 1 , Figure 1 This application provides a three-electric safety testing system, comprising: a local testing unit, a local server, and a cloud platform; the local testing unit includes at least one of: an OBD testing device, a charging testing device, and a chassis dynamometer; the local testing unit is connected to the vehicle. The local server is communicatively connected to the local detection unit and is used to receive detection data from the local detection unit; the cloud platform is communicatively connected to the local server and is used to receive and analyze the detection data; wherein, the system is configured to execute different detection modes by selecting different combinations of devices in the local detection unit.

[0017] In the embodiments of this application, reference is made to Figure 1The local server interacts with the cloud platform via Ethernet and communicates with the local testing unit, which includes an OBD testing device, a charging testing device, and a chassis dynamometer. The charging testing device includes a control console, electrical testing equipment, and a potential equalization module. The charging testing device is connected via hardwired to the vehicle's AC and DC charging sockets to test the vehicle's charging and electrical safety performance. The OBD (On-Board Diagnostics) testing device includes an OBD recorder and transceiver. The OBD testing device connects to the vehicle's OBD interface to read and analyze vehicle fault information and operating data. The OBD testing device is connected via hardwired to the vehicle's BMS (Battery Management System) and other controllers to diagnose and record vehicle data. The chassis dynamometer includes a control console and a dynamometer wheel. The chassis dynamometer interfaces with the vehicle's OBD interface via Ethernet to test the vehicle's power performance. The AC charging dock, DC charging dock, vehicle BMS controller, and vehicle OBD interface on the vehicle end are connected to the corresponding testing equipment to complete the testing of charging, electrical safety, data diagnosis, and power performance. The local server can integrate various test data and upload them to the cloud. The cloud can centrally manage the test data and interact remotely with the user.

[0018] Specifically, the OBD testing equipment reads the vehicle's three-electric data, the charging testing equipment reads the charging data, and the chassis dynamometer detects the discharge data, and then sends them to the local server and the cloud platform. The cloud platform can obtain and analyze the test data in real time, monitor the changes in the three-electric data online, and comprehensively evaluate the safety performance of new energy vehicles, including but not limited to emissions, fault information, charging performance, safety, power performance, and road driving conditions.

[0019] Furthermore, this application can perform different performance tests through different testing modes. For example, it can perform discharge data tests through OBD testing equipment, chassis dynamometer and local server, or perform charging data tests through OBD testing equipment, charging testing equipment and local server. That is, the testing system of this application can connect different testing equipment based on actual needs and combine the testing data of each testing equipment to evaluate the safety of the three electric components.

[0020] Optionally, the detection mode includes at least one of a first mode, a second mode, a third mode, and a fourth mode; wherein, In the first mode, the system is configured to perform charging data testing based on the OBD detection device, the charging inspection device, and the local server; In the second mode, the system is configured to perform discharge data testing based on the OBD detection device, the chassis dynamometer, and the local server; In the third mode, the system is configured to perform online detection of vehicle detection data based on the cloud platform; In the fourth mode, the system is configured to perform both online and offline joint detection based on the local detection unit, the local server, and the cloud platform.

[0021] In this embodiment, the three-electric safety testing system can be flexibly configured to support the combined operation of different testing devices. In the first mode, performance testing of the vehicle charging process is performed under the scheduling of a local server using OBD testing equipment and charging inspection equipment. In the second mode, the OBD testing equipment and chassis dynamometer simulate and collect data on the vehicle's discharge conditions through a local server. In the third mode, the cloud platform remotely analyzes and monitors the uploaded vehicle testing data online. In the fourth mode, the system can comprehensively utilize the local testing unit, local server, and cloud platform to simultaneously perform online diagnosis and offline testing. Specifically, the cloud platform can provide real-time feedback on the evaluation results of the testing data, while the offline testing system can continue to test or repair abnormal items and provide real-time feedback to the cloud, while also recording fault repair records. This testing system can flexibly determine the testing equipment according to different testing needs, realizing the testing and performance evaluation of the three-electric system, while simultaneously considering offline inspection and online monitoring, meeting the testing needs of different scenarios.

[0022] Optionally, the system further includes: a display terminal; the local server or the cloud platform is configured to push the detection data or the analysis results of the detection data to the display terminal in real time to display the vehicle health status or detection process.

[0023] In this embodiment, after receiving detection data from the testing equipment or completing the analysis of the detection data, the local server or cloud platform can push the detection results to the display terminal via a communication link. The detection results may include real-time vehicle electrical parameters, equipment status, or fault detection results, and can be used to reflect the vehicle's health status and the testing progress. The display terminal can be a tablet computer or mobile device. The display terminal allows operators to intuitively perceive the vehicle's health status and monitor the execution progress of various testing tasks, thus improving the efficiency of the testing process.

[0024] This application utilizes multi-source data fusion technology to efficiently integrate and fuse data from different sources, forming a comprehensive and accurate dataset for evaluating the performance of the three-electric systems (battery, motor, and electronic control system) of new energy vehicles. Data fusion not only improves the accuracy and reliability of testing but also reveals potential problems and risks that cannot be detected by a single data source.

[0025] In summary, this application discloses a three-electric safety testing system, comprising: a local testing unit, a local server, and a cloud platform; the local testing unit includes at least one of an OBD testing device, a charging testing device, and a chassis dynamometer; the local testing unit is connected to the vehicle; the local server is communicatively connected to the local testing unit and is used to receive the testing data from the local testing unit; the cloud platform is communicatively connected to the local server and is used to receive and analyze the testing data; wherein, the system is configured to execute different testing modes by selecting different combinations of devices in the local testing unit. The testing system of this application can select different combinations of devices and switch between multiple testing modes such as charging testing, discharging testing, or online monitoring, solving the problem of incomplete testing by a single testing device in related technologies. Simultaneously, the testing data from the local testing unit in this application can be synchronized to the local server and the cloud platform, enabling the local server or cloud platform to comprehensively assess the safety of the three-electric system based on the testing data, and improving testing accuracy by integrating multiple data sources.

[0026] refer to Figure 2 , Figure 2 This application provides a method for testing the safety of electrical, electronic, and electronic components (electrical, electrical, and electronic systems), applied to the aforementioned electrical, electronic, and electronic safety testing system. The method includes: Step 101: In response to the detection mode determination command, determine the target detection mode.

[0027] In this embodiment, the detection mode determination instruction can be triggered by the tester through an interactive interface, or it can be an instruction automatically generated based on the detection task. The detection mode determination instruction is used to determine the type of detection task that needs to be executed. Based on the detection mode determination instruction, the target detection mode is determined from multiple detection modes, and subsequent detection processes are executed based on the target detection mode.

[0028] Step 102: Based on the target detection mode, control the corresponding detection device in the local detection unit to execute the predefined detection process and acquire detection data.

[0029] In this embodiment, the corresponding combination of detection devices in the local detection unit is determined according to the established target detection mode. For example, if it is the first mode, i.e., the charging detection mode, the OBD detection device and the charging inspection device are controlled to operate; if it is the second mode, i.e., the discharging detection mode, the OBD detection device and the chassis dynamometer are controlled to operate. By issuing operation commands to the activated detection devices, they are driven to complete the detection actions according to the preset detection process. During the detection process, detection data is continuously acquired from each detection device for subsequent safety assessment of the three electrical components.

[0030] Step 103: Upload the test data to the cloud platform so that the cloud platform can compare the test data with preset standards and generate test results for the three electrical components.

[0031] In this embodiment, the detection data obtained in step 102 is transmitted to a cloud platform. The cloud platform stores massive amounts of detection data. By transmitting the detection data to the cloud platform, the cloud platform can perform comprehensive analysis of the detection data based on data resources, thereby improving the accuracy and reliability of the detection.

[0032] The cloud platform automatically compares and analyzes the uploaded test data with the preset safety standards stored in the database to determine the safety performance of the vehicle's three-electric system and generate three-electric test results. The three-electric test results can include specific conclusions of passing or failing, evaluation reports of specific parameters during the test, or fault diagnosis information, thereby forming a comprehensive evaluation result of the performance of the three-electric system.

[0033] Optionally, when the target detection mode is the first mode, step 102 includes: Sub-step 1021: Control the charging test equipment to establish a communication connection with the charging pile; Sub-step 1022: After successful connection, obtain the status data of the charging pile; Sub-step 1023: When it is determined from the status data that both the charging pile and the charging gun are in an idle state, control the charging pile to start charging; Sub-step 1024: Monitor the charging process, and control the charging pile to stop charging after the charging time reaches the first preset time, and obtain the charging data during the charging process.

[0034] In this embodiment, for sub-steps 1021 to 1024, the system sends a command to the charging inspection device to establish a communication connection with the designated charging pile. After the communication connection is established, the charging inspection device queries the charging pile for its current operating status and obtains status data. The status data may include the working status of the charging pile itself and the connection status of the charging gun. Only when both conditions are met—that the charging pile is idle and the charging gun is not connected—is a "start charging" command sent to the charging pile. This prevents safety accidents caused by the charging pile being occupied or the charging gun being connected to a vehicle, ensuring the safety of the inspection process.

[0035] After charging begins, the charging process is continuously monitored. When the cumulative charging time reaches the first preset duration, a "stop charging" command is issued to end the current charging session. Throughout the entire charging process, various charging data from the charging station are recorded synchronously for subsequent performance analysis and safety assessment.

[0036] refer to Figure 3 , Figure 3 This diagram illustrates the schematic of a charging testing device. The industrial control computer (ICC) is connected to a monitor via a VGA (Video Graphics Array) interface, and is operated with a keyboard and mouse. The ICC is expanded with additional cards via a PCI (Peripheral Component Interconnect) interface. The safety testing instrument is powered by a power switch, power strip, and emergency stop switch. The safety testing instrument communicates with the ICC via an RS232 interface. It also includes a current port, a ground port, and multiple testing interfaces (HV, SENSE-, SENSE+, CUBE-, CUBE+), all grounded via a grounding wire. A multi-channel switching board connects to the ICC and to devices such as DC charging piles, AC charging guns and potentiometers, and banana plugs, enabling safety testing of DC or AC charging equipment. The entire system achieves its safety testing function through hardware connections and communication links.

[0037] refer to Figure 4 , Figure 4 The diagram illustrates the internal schematic of a charging testing device. The safety testing instrument connects to a multi-channel switching unit via interfaces such as HV, S+, C-, and S-. The multi-channel switching unit contains an encoding module, A1-A5 module groups, and B1-B4 module groups as switching channels, connecting to a DC charging gun, an AC charging gun, a PE plug (protective grounding plug), and a potential clamp (a clamp for potential detection). This enables the safety testing instrument to perform safety tests on DC charging equipment, AC charging equipment, grounding systems, and potential status. Through channel switching by the multi-channel switching unit, the safety testing instrument can flexibly adapt to different testing objects and scenarios to complete electrical safety compliance tests.

[0038] refer to Figure 5 , Figure 5 This diagram illustrates an OBD detection principle. A 34-pin connector interfaces with the vehicle's OBD interface, enabling data exchange with the vehicle's ECU (Electronic Control Unit) and external devices via CAN bus, LIN bus, Ethernet, and Bluetooth. The program firmware and diagnostic data are stored using QSPI Flash (Quad Serial Peripheral Interface Flash Memory) and storage media (such as eMMC). The device also includes monitoring and indication modules such as an NTC temperature sensor, watchdog timer, and dual-color LEDs. Power supply filtering and a multi-stage DC / DC converter provide stable power to all components, enabling vehicle fault diagnosis, data acquisition, and communication with external devices.

[0039] Optionally, sub-step 1021 includes: Sub-step 10211: Obtain the duration of the communication connection established between the charging testing equipment and the charging pile; Sub-step 10212: If the charging test equipment fails to connect to the charging pile within the second preset time period, the charging test process is terminated and a connection abnormality is reported. Sub-step 10213: If the charging test device successfully connects to the charging pile within the second preset time period, the identity verification between the charging test device and the charging pile is completed according to the preset communication protocol.

[0040] In this embodiment of the application, for sub-steps 10211 to 10213, the duration for establishing a communication connection between the charging testing device and the charging pile can be obtained by establishing a listener. For example, by using a preset listener, the duration of the process of the charging testing device and the charging pile attempting to establish a communication connection is timed. If the communication connection is not successfully established within the set second preset time, the current charging testing process is stopped, and the abnormal status information of the communication connection is reported to the server. If the communication connection is established within the second preset time, the charging testing device and the charging pile perform two-way authentication according to the pre-agreed communication protocol, and the two systems synchronize their time to prepare for the execution of the subsequent charging testing process.

[0041] In one embodiment, reference Figure 6 , Figure 6A charging detection flowchart is shown. When the system enters the charging detection phase, a listener is established to monitor connection requests from the charging pile. The second preset timeout can be set to, for example, 10 seconds. If the charging detection device successfully establishes a communication connection with the charging pile within 10 seconds, it completes authentication and system time synchronization with the charging pile according to the preset charging pile communication protocol. If a connection cannot be established within 10 seconds, the charging detection process ends, a "detection data abnormal" flag is set and sent, and a pop-up window prompts the user with "charging pile communication connection abnormal." After the communication connection is established, the system can obtain and parse the charging pile's status data to determine the charging pile's working status and the charging gun's connection status. Only when both the charging pile's working status and the charging gun's status are "idle" will the system send a "start charging" control command to the charging pile. If the charging pile is busy or the charging gun is occupied, the charging process ends, and a pop-up window reminds the user of the charging detection process abnormality, possibly due to reasons such as the charging gun not being connected or the charging pile being in use. After the system sends the command to start charging, if it detects that the charging pile's working status has changed to "charging," it begins timing the charging duration. When the timer reaches or exceeds a first preset duration (e.g., 180 seconds), a command to stop charging is sent to the charging pile. After the charging pile executes the command, its working status changes to "charging finished." All data recorded within these 180 seconds is marked as valid data. If, after the system sends the command to start charging, the charging pile's working status has not changed to "charging" within 30 seconds, it is determined that the charging start has failed, the charging detection process ends, and a pop-up window displays a message to the user: "Charging start failed, reason for failure: xxxxx," based on the specific reason parsed from the charging pile's message.

[0042] During charging testing, test data is synchronized to the local server and cloud platform. The process of determining if the testing equipment is properly connected to the local server involves: if the server times out and does not respond when sending a message, it is automatically resent; if the login message is resent three times without response, the TCP connection is disconnected and a pop-up message "Server connection abnormal, unable to test" is displayed; if the heartbeat signal is resent three times without response, the heartbeat message is stopped. The system uses a mechanism of sending a heartbeat message every 10 seconds to maintain an active TCP connection; if the TCP connection is unexpectedly interrupted, the session connection with the local server is immediately disconnected, and a pop-up message "Server connection interrupted" is displayed. Specific testing procedures may include: matching test files according to information, automatically inputting vehicle battery capacity, battery type, and charging type (AC / DC) to improve operational efficiency; prompting testing personnel to plug and unplug the charging gun, potentiometer clip, and testing pen; the connection process is automatically detected by the system, and personnel must confirm each step to ensure accurate connection. A 1730U board controls a multi-channel switching board to improve control reliability; simultaneously, it communicates with safety testing equipment via serial communication to initiate testing, ensuring testing accuracy. The system sends messages to query test data, compares it with preset test standards, and displays the results on the user interface. If there are problems with the test results, the system can directly select to repeat the test. Single-item tests are also supported during the test, such as electrical safety testing or single charging testing, flexibly adapting to testing needs. After a single test is completed, the system automatically switches to the next test item without manual intervention. For example, after all electrical inspections are completed, the system automatically enters the charging test phase. The charging pile reads the charging data in real time. After the specified time is reached, the system controls the DC charging pile to stop charging, compares the results with the charging test standards, and displays the results on the user interface, completing the charging test closed loop. Throughout the testing process, equipment is distinguished by the test line number (ASSIC code) and the equipment code (ASSIC code), enabling accurate identification and independent operation of multiple identical sets of equipment within the same testing workshop.

[0043] Optionally, when the target detection mode is the second mode, step 102 includes: Sub-step 1025: Based on the vehicle parameters received from the cloud platform, calculate and generate the loading parameters of the chassis dynamometer; Sub-step 1026: Based on the vehicle parameters, determine the wheelbase adjustment parameters of the chassis dynamometer; Sub-step 1027: After the vehicle enters the chassis dynamometer, the loading parameters and the wheelbase adjustment parameters are sent to the chassis dynamometer to control the chassis dynamometer to apply load based on the loading parameters, adjust the wheelbase based on the wheelbase adjustment parameters, and simultaneously control the OBD detection equipment to collect vehicle detection data.

[0044] In this embodiment, for sub-steps 1025 to 1027, when the target detection mode is the second mode, discharge detection is performed. The local server can request vehicle parameters from the cloud based on the vehicle identification number of the vehicle to be detected. The cloud platform can query the vehicle parameters based on the vehicle identification number and send them to the local server, which can receive the vehicle parameters. The vehicle parameters may include information such as the vehicle's mass, maximum power, drive type, and tire rolling radius. Based on the vehicle parameters and the items to be tested, the loading parameters of the chassis dynamometer are calculated, and the wheelbase adjustment parameters of the chassis dynamometer are determined. The loading parameters can be parameters that simulate the resistance experienced by the vehicle when driving on actual roads. By controlling the loading parameters of the chassis dynamometer, the required load is generated on the vehicle's drive wheels, thereby simulating real road driving conditions.

[0045] Since different vehicles have different wheelbases, to ensure the vehicle is stably fixed in the designated position on the dynamometer, wheelbase adjustment parameters can be determined based on the wheelbase information in the vehicle parameters. This allows the chassis dynamometer to adjust the wheelbase according to these parameters to match the wheelbase of the vehicle being tested. Once the vehicle enters the chassis dynamometer, the dynamometer applies a load to the vehicle's drive wheels according to the loading parameters to perform the test. Simultaneously, the OBD testing equipment collects various test data of the vehicle in real time. The obtained test data can be synchronized to a local server and a cloud server for analysis.

[0046] In one embodiment, the local server calculates the required torque as a loading parameter based on vehicle parameters sent from the cloud platform: VIN, axle load, tire radius, and wheelbase. The local server can send the loading parameter to the control console of the chassis dynamometer to control the load applied to the tires by the chassis dynamometer. The driver assistant can be a display interface located near the chassis dynamometer. During the test, the driver assistant can simultaneously prompt the driver's operation and display information such as the test serial number, DC-DC temperature, drive motor temperature, motor control temperature, VIN, maximum temperature of the power battery, battery capacity retention rate, maximum voltage of individual cells, test time, and vehicle speed in real time. In the test preparation stage, after the software starts, it will perform a self-check on the chassis dynamometer, including adjusting the maximum and minimum wheelbase and self-checking sensors. Then, the dynamometer wheelbase is adjusted according to the vehicle wheelbase. During the test, the dynamometer applies eddy current torque. After receiving the start test command, the chassis dynamometer officially starts the test. If the dynamometer malfunctions, its panel will display the corresponding fault information. refer to Figure 7The discharge safety test result upload process is completed via TCP (Transmission Control Protocol) communication: After receiving the electrical and charging test results, the local server pushes the test vehicle parameters to the control console of the discharge test equipment, i.e., the chassis dynamometer. The discharge test equipment's host computer configures the relevant parameters of the dynamometer and guides the vehicle into the dynamometer, and then notifies the local server to start the discharge test. The local server simultaneously notifies the OBD interface to collect vehicle data at a fixed frequency and report it to the local server. The local server then pushes the data to the host computer for the driver assistant to display. When the discharge test ends, the host computer notifies the local server through the TCP interface. After receiving the discharge test end notification, the local server notifies the PAD client through the TCP interface. The PAD client can be the mobile terminal used by the operator. After receiving the discharge test end notification, the PAD client starts calculating the final test result and reports the final result through the HTTP (Hypertext Transfer Protocol) interface. After receiving the report request from the PAD client, the local server saves the discharge test data to the database. In addition, the connection between the vehicle and the testing equipment can be achieved through a VCI (Vehicle Communication Interface) device. The VCI device uses Wi-Fi communication, replacing Bluetooth and wired control, offering a longer communication distance and more stable signal. The device coding can be manually configured, and multiple devices can work online simultaneously. Power battery discharge testing requires reading ECU data through the OBD port, including the highest power battery temperature during discharge, the lowest voltage of individual cells, and the battery capacity retention rate. To begin the test, first plug the VCI device into the OBD port of the vehicle under test, then click "Connect VCI Device" on the PAD. Once the connection is successful, a diagnostic command is issued to obtain the highest power battery temperature, the lowest voltage of individual cells, and the battery capacity retention rate.

[0047] refer to Figure 8 , Figure 8An electrical testing flowchart is shown, specifically including: starting electrical safety testing; determining whether the vehicle supports both AC and DC charging; if yes, prompting to insert the AC charging gun and clamp the door latch with the potentiometer; starting AC charging socket insulation resistance testing; prompting to insert the DC charging gun; starting DC socket insulation resistance testing; starting DC socket insulation resistance testing; starting casing and power platform potential equalization testing (DC); prompting to insert the test pen to the DC PE port; starting power platform and power platform potential equalization testing and ending; if no, determining whether the vehicle supports DC charging; if yes, prompting to insert the DC charging gun and clamp the door latch with the potentiometer; starting DC socket insulation resistance testing; starting casing and power platform potential equalization testing (DC) and ending; if no, prompting to insert the AC charging gun and clamp the door latch with the potentiometer; starting AC socket insulation resistance testing; starting casing and power platform testing (AC) and ending.

[0048] Optionally, after sub-step 1027, the method further includes: Sub-step 1028: Based on the detection data, determine the abnormal items that are detected as abnormal; Sub-step 1029: Perform cyclic retesting for the abnormal items; Sub-step 1030: Determine the final detection result based on the results of the cyclic retest.

[0049] In this embodiment, for sub-steps 1028 to 1030, after completing one test, the collected test data is compared one by one with a preset standard threshold or normal range to identify abnormal items that do not meet the standard. To avoid misjudgment due to accidental factors, after identifying abnormal items, cyclic retesting can be performed on the abnormal items, and the final test result is determined based on the results of the cyclic retesting. It should be noted that the maximum number of cyclic retests can be set by the user in the system's parameter configuration interface. If the data acquired during the cyclic retesting is normal, the data and result will be displayed as qualified in the results. If the data is still incorrect after reaching the maximum number of cyclic retests, the result will display the data with the largest deviation from the standard error, and the result will be unqualified.

[0050] Optionally, prior to step 102, the method further includes; Step 105: Based on the connection request from the detection device, return the communication address to the detection device; Step 106: Receive authentication information sent by the detection device based on the communication address; Step 107: If the identity verification information is successfully verified, execute the step of controlling the corresponding detection device in the local detection unit to perform the predefined detection process.

[0051] In this embodiment of the application, for steps 105 to 107, refer to Figure 9 Before the actual testing process begins, a communication address is returned to the testing device based on the connection request initiated by the testing device. The communication address may include an IP address, port number, etc. The authentication information sent by the testing device based on the communication address is received. The authentication information may include the device's unique identifier, authentication key, etc. If the authentication information is verified, the predefined testing process corresponding to the testing device in the local testing unit is carried out. The security and data reliability of the testing process are ensured by verifying the testing device.

[0052] The terminal aggregates the test data transmitted from various subsystems, sorts and judges the data, generates vehicle test reports according to regulatory requirements, can connect to a printer to print relevant reports, and also supports uploading relevant data to the test center's cloud server for management.

[0053] This application uploads all test data to a cloud platform, which can collect and store all data during vehicle operation: online TBOX monitors the vehicle's battery voltage difference, capacity retention rate, motor temperature, and electric drive temperature in real time to determine the dynamic safety of the three electric components (battery, motor, and electronic control system); it detects the health of charging hardware and battery hardware by detecting DC-DC temperature, battery temperature, and SOC data; it monitors the voltage and temperature of the battery, electric drive, and electronic control system, and combines this with vehicle collision and repair / replacement information to achieve intelligent safety management of new energy vehicles, filter alarm data with potential safety risks to the three electric components, and provide rapid and accurate guidance to users and after-sales staff for troubleshooting and maintenance of the vehicle's normal battery, electric drive, and electronic control systems, as well as the discharge process.

[0054] In summary, this application utilizes a testing line comprised of OBD testing equipment, charging testing equipment, a chassis dynamometer, and a cloud platform to comprehensively assess the safety performance of new energy vehicles, including but not limited to emissions, fault information, charging performance, safety, power performance, and road driving conditions. This comprehensive testing approach allows for a more accurate assessment of new energy vehicle safety, enhancing consumer trust. The cloud platform enables the full utilization of vast amounts of testing data, facilitating intelligent safety management of new energy vehicles. For example, big data analysis can predict potential safety issues, allowing for proactive prevention and intervention, further improving the safety of new energy vehicles.

[0055] refer to Figure 10 , Figure 10This application provides a chassis dynamometer, comprising: a base, a front axle dynamometer unit, a rear axle dynamometer unit, a wheelbase adjustment mechanism, and a splined synchronization mechanism; the front axle dynamometer unit, the rear axle dynamometer unit, and the wheelbase adjustment mechanism are arranged on the base; the wheelbase adjustment mechanism is used to drive the front axle dynamometer unit and the rear axle dynamometer unit to move and adjust the wheelbase; the front axle dynamometer unit and the rear axle dynamometer unit are connected by a splined synchronization mechanism for synchronizing the front axle tires and the rear axle tires.

[0056] In this embodiment, the chassis dynamometer includes: a base 11, a front axle dynamometer unit, a rear axle dynamometer unit, a wheelbase adjustment mechanism, and a spline-type synchronization mechanism. The front axle dynamometer unit includes a left dynamometer 13 and a right dynamometer 15, and the rear axle dynamometer unit is similar. The spline-type synchronization mechanism can be located inside the protective cover 12. Compared with the traditional belt pulley drive, the spline-type synchronization mechanism used in this application not only has better durability, but also significantly improves the synchronization performance and precision control of the front and rear axles.

[0057] Furthermore, the left / right dynamometer consists of a support frame, rollers, and a loading system. The front / rear wheels of the vehicle mesh with the rollers. During the test, the vehicle tires drive the rollers to rotate, and the loading system provides corresponding resistance to the tires, simulating the vehicle's operation on flat ground. The wheelbase adjustment mechanism is located inside the protective cover 14. Based on the wheelbase information of the test vehicle transmitted from the OBD and server, the ball screw completes the axle adjustment, realizing the meshing of the front and rear wheels of the vehicle with the left / right dynamometer rollers. The front and rear axle synchronization mechanism, through a transmission mechanism, realizes the synchronization of the rotational speed of the left / right dynamometer rollers, achieving the synchronization of the rotational speed of the front and rear wheels of the test vehicle. The loading system includes an air-cooled eddy current motor, which includes eight windings on each side, with a maximum speed of 4000 rpm.

[0058] refer to Figure 11 This application illustrates a three-electric safety testing device provided in an embodiment of the present application, applied to the aforementioned three-electric safety testing system. The device includes: The determination module is used to determine the target detection mode in response to the detection mode determination command; The detection module is used to control the corresponding detection device in the local detection unit to execute a predefined detection process and acquire detection data based on the target detection mode. The upload module is used to upload the test data to the cloud platform, so that the cloud platform can compare the test data with preset standards and generate test results for the three electrical components.

[0059] Optionally, when the target detection mode is the first mode, the detection module includes: Establish a submodule to control the charging testing equipment to establish a communication connection with the charging pile; The status acquisition submodule is used to acquire the status data of the charging pile after a successful connection. The charging submodule is used to control the charging pile to charge when it is determined from the status data that both the charging pile and the charging gun are in an idle state. The monitoring submodule is used to monitor the charging process, and control the charging pile to stop charging after the charging time reaches the first preset time, and to acquire the charging data during the charging process.

[0060] Optionally, submodules may be created, including: The listening unit is used to obtain the duration of the communication connection established between the charging testing equipment and the charging pile; The first processing unit is used to terminate the charging test process and report a connection abnormality if the charging test equipment fails to connect with the charging pile within a second preset time period. The second processing unit is used to complete the authentication between the charging inspection device and the charging pile according to a preset communication protocol if the charging inspection device successfully connects to the charging pile within a second preset time period.

[0061] Optionally, when the target detection mode is the second mode, the detection module includes: The configuration submodule is used to calculate and generate the loading parameters of the chassis dynamometer based on the vehicle parameters received from the cloud platform. The adjustment submodule is used to determine the wheelbase adjustment parameters of the chassis dynamometer based on the vehicle parameters; The discharge test submodule is used to send the loading parameters and the wheelbase adjustment parameters to the chassis dynamometer after the vehicle enters the chassis dynamometer, so as to control the chassis dynamometer to apply a load based on the loading parameters, adjust the wheelbase based on the wheelbase adjustment parameters, and simultaneously control the OBD detection equipment to collect vehicle detection data.

[0062] Optionally, after the synchronous control OBD detection device collects vehicle detection data, the device further includes: An anomaly determination module is used to determine the abnormal items detected based on the detection data; The retesting module is used to perform cyclic retesting on the abnormal items; The result determination module is used to determine the final detection result based on the results of the cyclic retest.

[0063] Optionally, before controlling the corresponding detection device in the local detection unit to execute a predefined detection process, the device further includes: The return module is used to return a communication address to the detection device based on the connection request from the detection device; The verification information receiving module is used to receive the authentication information sent by the detection device based on the communication address; The verification module is used to execute steps to control the corresponding detection device in the local detection unit to perform a predefined detection process when the identity verification information is successfully verified.

[0064] In summary, this application utilizes a testing line comprised of OBD testing equipment, charging testing equipment, a chassis dynamometer, and a cloud platform to comprehensively assess the safety performance of new energy vehicles, including but not limited to emissions, fault information, charging performance, safety, power performance, and road driving conditions. This comprehensive testing approach allows for a more accurate assessment of new energy vehicle safety, enhancing consumer trust. The cloud platform enables the full utilization of vast amounts of testing data, facilitating intelligent safety management of new energy vehicles. For example, big data analysis can predict potential safety issues, allowing for proactive prevention and intervention, further improving the safety of new energy vehicles.

[0065] Reference Figure 12 The electronic device 600 may include one or more of the following components: a processing component 602, a memory 604, a power supply component 606, a multimedia component 608, an audio component 610, an input / output (I / O) interface 612, a sensor component 614, and a communication component 616.

[0066] Processing component 602 typically controls the overall operation of electronic device 600, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 602 may include one or more processors 620 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 602 may include one or more modules to facilitate interaction between processing component 602 and other components. For example, processing component 602 may include a multimedia module to facilitate interaction between multimedia component 608 and processing component 602.

[0067] Memory 604 is used to store various types of data to support the operation of electronic device 600. Examples of this data include instructions for any application or method operating on electronic device 600, contact data, phonebook data, messages, pictures, multimedia, etc. Memory 604 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0068] Power supply component 606 provides power to various components of electronic device 600. Power supply component 606 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 600.

[0069] Multimedia component 608 includes a screen that provides an output interface between the electronic device 600 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may not only sense the boundaries of touch or swipe actions but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 608 includes a front-facing camera and / or a rear-facing camera. When the electronic device 600 is in an operating mode, such as a shooting mode or a multimedia mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0070] Audio component 610 is used to output and / or input audio signals. For example, audio component 610 includes a microphone (MIC) used to receive external audio signals when electronic device 600 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 604 or transmitted via communication component 616. In some embodiments, audio component 610 also includes a speaker for outputting audio signals.

[0071] I / O interface 612 provides an interface between processing component 602 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0072] Sensor assembly 614 includes one or more sensors for providing state assessments of various aspects of electronic device 600. For example, sensor assembly 614 can detect the on / off state of electronic device 600, the relative positioning of components such as the display and keypad of electronic device 600, changes in position of electronic device 600 or a component of electronic device 600, the presence or absence of user contact with electronic device 600, orientation or acceleration / deceleration of electronic device 600, and temperature changes of electronic device 600. Sensor assembly 614 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 614 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0073] Communication component 616 facilitates wired or wireless communication between electronic device 600 and other devices. Electronic device 600 can access wireless networks based on communication standards, such as WiFi, carrier networks (such as 2G, 3G, 4G, or 5G), or combinations thereof. In one exemplary embodiment, communication component 616 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 616 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0074] In an exemplary embodiment, the electronic device 600 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to implement a method provided in the embodiments of this application.

[0075] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 604 including instructions, which can be executed by a processor 620 of an electronic device 600 to perform the above-described method. For example, the non-transitory storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0076] Figure 13A block diagram of an electronic device 700 is shown according to an exemplary embodiment. For example, the electronic device 700 may be provided as a server. (Refer to...) Figure 13 Electronic device 700 includes a processing component 722, which further includes one or more processors, and memory resources represented by memory 732 for storing instructions, such as application programs, that can be executed by the processing component 722. The application programs stored in memory 732 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 722 is configured to execute instructions to perform a method provided in embodiments of this application.

[0077] Electronic device 700 may also include a power supply component 726 configured to perform power management of electronic device 700, a wired or wireless network interface 750 configured to connect electronic device 700 to a network, and an input / output (I / O) interface 758. Electronic device 700 may operate on an operating system stored in memory 732, such as Windows Server™, MacOSX™, Unix™, Linux™, FreeBSD™, or similar.

[0078] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the method described above.

[0079] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0080] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A three-electricity safety detection system, characterized in that, include: Local detection unit, local server, and cloud platform; The local testing unit includes at least one of: an OBD testing device, a charging testing device, and a chassis dynamometer; the local testing unit is connected to the vehicle. The local server is communicatively connected to the local detection unit and is used to receive detection data from the local detection unit. The cloud platform is communicatively connected to the local server and is used to receive and analyze the detection data; The system is configured to perform different detection modes by selecting different combinations of devices in the local detection unit.

2. The system according to claim 1, characterized in that, The detection mode includes at least one of the following: a first mode, a second mode, a third mode, and a fourth mode; wherein, In the first mode, the system is configured to perform charging data testing based on the OBD detection device, the charging inspection device, and the local server; In the second mode, the system is configured to perform discharge data testing based on the OBD detection device, the chassis dynamometer, and the local server; In the third mode, the system is configured to perform online detection of vehicle detection data based on the cloud platform; In the fourth mode, the system is configured to perform both online and offline joint detection based on the local detection unit, the local server, and the cloud platform.

3. The system according to claim 1, characterized in that, The system also includes: a display terminal; The local server or the cloud platform is configured to push the detection data or the analysis results of the detection data to the display terminal in real time to display the vehicle health status or detection process.

4. A method for detecting the safety of electrical, electronic, and electronic components, applied to the electrical, electronic, and electronic safety detection system as described in any one of claims 1-3, characterized in that, The method includes: In response to the detection mode determination command, the target detection mode is determined; Based on the target detection mode, the corresponding detection device in the local detection unit is controlled to execute a predefined detection process and acquire detection data; The test data is uploaded to the cloud platform so that the cloud platform can compare the test data with preset standards and generate test results for the three electrical components.

5. The method according to claim 4, characterized in that, When the target detection mode is the first mode, the corresponding detection device in the local detection unit is controlled to execute a predefined detection process, including: Establish a communication connection between the charging testing equipment and the charging pile; After a successful connection, obtain the status data of the charging pile; When it is determined from the status data that both the charging pile and the charging gun are in an idle state, the charging pile is controlled to start charging. Monitor the charging process and control the charging pile to stop charging after the charging time reaches the first preset time, and acquire the charging data during the charging process.

6. The method according to claim 5, characterized in that, The system controls the charging testing equipment to establish a communication connection with the charging pile, including: The duration of the communication connection established between the charging testing equipment and the charging pile is obtained; If the charging test equipment fails to connect to the charging pile within the second preset time period, the charging test process will be terminated and a connection abnormality will be reported. If the charging inspection device successfully connects to the charging pile within the second preset time period, the authentication between the charging inspection device and the charging pile is completed according to the preset communication protocol.

7. The method according to claim 4, characterized in that, When the target detection mode is the second mode, the corresponding detection device in the local detection unit is controlled to execute a predefined detection process, including: Based on the vehicle parameters received from the cloud platform, the loading parameters of the chassis dynamometer are calculated and generated. Based on the vehicle parameters, the wheelbase adjustment parameters of the chassis dynamometer are determined; After the vehicle enters the chassis dynamometer, the loading parameters and the wheelbase adjustment parameters are sent to the chassis dynamometer to control the chassis dynamometer to apply a load based on the loading parameters, adjust the wheelbase based on the wheelbase adjustment parameters, and simultaneously control the OBD detection equipment to collect vehicle detection data.

8. The method according to claim 7, characterized in that, After the synchronously controlled OBD detection device collects vehicle detection data, the method further includes: Based on the detection data, identify the abnormal items that were detected; Perform cyclic retesting on the aforementioned abnormal items; The final detection result is determined based on the results of the cyclic retesting.

9. The method according to claim 4, characterized in that, Before controlling the corresponding detection device in the local detection unit to execute a predefined detection process, the method further includes: Based on the connection request from the detection device, a communication address is returned to the detection device; Receive authentication information sent by the detection device based on the communication address; If the authentication information is successfully verified, the steps of controlling the corresponding detection device in the local detection unit to execute the predefined detection process are executed.

10. A chassis dynamometer, characterized in that, include: Base, front axle dynamometer unit, rear axle dynamometer unit, wheelbase adjustment mechanism, spline-type synchronization mechanism; The front axle dynamometer, the rear axle dynamometer, and the wheelbase adjustment mechanism are arranged on the base; the wheelbase adjustment mechanism is used to drive the front axle dynamometer and the rear axle dynamometer to move and adjust the wheelbase. The front axle dynamometer unit and the rear axle dynamometer unit are connected by a splined synchronization mechanism for synchronizing the front axle tires and the rear axle tires.

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