A low-voltage power supply system test method, test device, equipment and storage medium

Abstract

A low-voltage power supply system test method, test device, equipment and storage medium, relate to the field of vehicles. The method comprises: displaying, on a display interface, test state information corresponding to each power supply object of a low-voltage power supply system, the test state information indicating the working state and / or working parameter of the power supply object; in response to a test operation triggered on the display interface, generating a message command corresponding to the test operation, to control a first group of power supply objects targeted by the test operation based on the message command, the first group of power supply objects being at least one of the power supply objects of the low-voltage power supply system; obtaining test feedback information corresponding to the first group of power supply objects, the test feedback information indicating the working state and / or working parameter of the first group of power supply objects under the control of the message command; and updating the test state information displayed on the display interface based on the test feedback information. With the method, the complexity and risk of the test operation are reduced, and the ability requirement for the test personnel is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a testing method, testing device, equipment and storage medium for a low-voltage power supply system. Background Technology

[0002] Traditional vehicles use a 12V low-voltage electrical system, powered by a 12V low-voltage battery. This 12V system can provide a stable current of up to 200A-300A. However, with the rapid development and evolution of intelligent electric vehicles, the number and power of electrical appliances in vehicles have increased significantly. Therefore, under current trends, the power supply capacity of the traditional 12V low-voltage electrical system is nearing its limit, and 48V low-voltage electrical systems are beginning to emerge.

[0003] Currently, mainstream low-voltage electrical systems in vehicles are based on 12V systems. Adapting to 48V power supply requires significant R&D investment and a long development cycle. Furthermore, some electrical appliances have low power consumption (such as in-vehicle indicator lights) and do not require 48V power. Therefore, hybrid power supply systems with both 12V and 48V power supplies coexist in vehicles. Thus, it is necessary to build a 48V / 12V hybrid low-voltage power supply test bench to test and verify the relevant electrical performance of the hybrid power supply system.

[0004] Current testing methods typically require dedicated low-level debugging tools connected to the microcontroller in the Zone Control Unit (ZCU). These tools access, read, and modify the microcontroller's registers and memory via a Joint Test Action Group (JTAG) interface or Serial Wire Debug (SWD). However, this approach is complex and risky, and is only suitable for developers with extensive hardware and software expertise. Summary of the Invention

[0005] In view of the above problems, this application provides a testing method, testing device, equipment and storage medium for low-voltage power supply systems, which reduces the complexity and risk of testing operations, reduces the ability requirements of testing personnel, and has high usability.

[0006] Firstly, this application provides a low-voltage power supply system testing method. This method is used to test the low-voltage power supply system of a vehicle and can be applied to a host computer, which can be a desktop computer, laptop computer, tablet computer, or other possible electronic devices. The method includes: displaying test status information corresponding to each power supply object of the low-voltage power supply system on a display interface, the test status information indicating the working status and / or working parameters of different power supply objects in the power supply system; generating a message command corresponding to the test operation in response to a test operation triggered on the display interface, so as to control a first group of power supply objects targeted by the test operation based on the message command, the first group of power supply objects being one of the power supply objects in the low-voltage power supply system; obtaining test feedback information corresponding to the first group of power supply objects, the test feedback information indicating the working status and / or working parameters of the first group of power supply objects under the message command; and updating the test status information displayed on the display interface based on the test feedback information.

[0007] The method provided in this application offers an intuitive user interface, and the interface and functional modules can be customized according to testing requirements. This solution enables targeted testing of the first group of power supply objects in the low-voltage power supply system under test. It can also collect and update the operating status and / or operating parameters of the first group of power supply objects in real time. Testers can quickly control the first group of power supply objects through test operations triggered by the interface, avoiding direct manipulation of the underlying layers, improving the reliability and safety of the testing process, reducing the skill requirements for testers, increasing testing efficiency, and exhibiting high usability.

[0008] In one possible implementation, before displaying the test status information corresponding to each power supply object of the low-voltage power supply system on the display interface, the method further includes: configuring a controller area network (CAN) channel with the low-voltage power supply system to establish CAN communication with the low-voltage power supply system, wherein the message command is a CAN message command, and the CAN message command is sent to the low-voltage power supply system through CAN communication.

[0009] In one possible implementation, displaying the test status information corresponding to each power supply object of the low-voltage power supply system on the display interface specifically includes: receiving CAN messages sent by each power supply object of the low-voltage power supply system using CAN communication; obtaining the test status information of each power supply object of the low-voltage power supply system using CAN messages; and displaying the test status information corresponding to each power supply object of the low-voltage power supply system on the display interface.

[0010] In one possible implementation, the message command is a CAN message command. In response to a test operation triggered on the display interface, a message command corresponding to the test operation is generated. Specifically, this includes: in response to a test operation triggered on the display interface, determining the first group of power supply objects; and generating a CAN message command corresponding to the test operation based on a pre-established association between the test operation and the CAN message command of the controller area network.

[0011] In one possible implementation, the test operation includes one or more of the following operations for the first group of powered objects: powering on, powering off, and configuring operating parameters.

[0012] In one possible implementation, the operating status indicates that the powered object is in one or more of the following states: powered on, powered off, fault-free, fault present, and fault type. Operating parameters include at least one of the following: impedance, operating current, operating voltage, power, and operating time.

[0013] In one possible implementation, the power supply object includes at least one of the following: an appliance with an input voltage of 12V, an appliance with an input voltage of 48V, a controllable switch, a sensor, and an actuator.

[0014] Secondly, this application also provides a power supply system testing device, comprising a display module, a control module, an acquisition module, and an update module. The display module is used to display test status information corresponding to each power supply object of the low-voltage power supply system on a display interface. The test status information indicates the working status and / or working parameters of different power supply objects in the power supply system. The control module is used to generate a message command corresponding to the test operation triggered on the display interface in response to the test operation, so as to control the first group of power supply objects targeted by the test operation based on the message command. The first group of power supply objects is at least one of the power supply objects in the low-voltage power supply system. The acquisition module is used to acquire test feedback information corresponding to the first group of power supply objects. The test feedback information indicates the working status and / or working parameters of the first group of power supply objects under the control of the message command. The update module is used to update the test status information displayed on the display interface based on the test feedback information.

[0015] Thirdly, this application also provides an electronic device, the device including a processor and a memory. The processor is coupled to the memory; the memory is used to store instructions; the processor is used to execute the computer program or instructions stored in the memory to implement the methods described in the first aspect and any implementation thereof.

[0016] Fourthly, this application also provides a computer storage medium for storing a computer program, which, when executed, implements the method described in the first aspect and any implementation thereof. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a test bench provided in this application;

[0019] Figure 2 A schematic diagram of the testing apparatus required for a prior art testing method provided in this application;

[0020] Figure 3 A flowchart of a testing method provided in an embodiment of this application;

[0021] Figure 4 A schematic diagram of a test architecture provided for an embodiment of this application;

[0022] Figure 5 A schematic diagram of the display interface provided in an embodiment of this application;

[0023] Figure 6 A flowchart of another testing method provided in the embodiments of this application;

[0024] Figure 7 A flowchart illustrating the testing method for the actuator provided in this application embodiment;

[0025] Figure 8 A schematic diagram of a low-voltage power supply system testing device provided in an embodiment of this application;

[0026] Figure 9 This is a schematic diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0027] To enable those skilled in the art to better understand the solution of this application, the application scenario of the technical solution of this application will be described first below.

[0028] Traditional vehicles use a 12V low-voltage electrical system. However, with the rapid development and evolution of intelligent electric vehicles, the number and power of electrical appliances in vehicles have increased significantly. Therefore, under current trends, the power supply capacity of the traditional 12V low-voltage electrical system is nearing its limit, and 48V low-voltage electrical systems are beginning to emerge.

[0029] The 48V low-voltage electrical system offers numerous advantages. Firstly, for the same power output, the current can be reduced to one-quarter of the original value, theoretically allowing for a reduction in wire diameter to half. This translates to a weight reduction of nearly 10kg for the entire vehicle's wiring harness. Correspondingly, heat loss in the wiring harness will be reduced by tens of watts, significantly benefiting battery selection. Furthermore, the 48V low-voltage electrical system expands the voltage range of the current 12V low-voltage electrical system from 9-16V to 36-52V, providing better resilience against grid fluctuations.

[0030] However, since the 12V low-voltage electrical system is already very mature, it is extremely difficult to switch to a full 48V low-voltage electrical system in the short term. Therefore, for some time to come, there will inevitably be a coexistence of 12V and 48V components in vehicles. As a result, it is necessary to build a 48V / 12V hybrid low-voltage power supply test bench to test and verify the relevant electrical performance of the hybrid power supply system.

[0031] See Figure 1 The figure is a schematic diagram of a test bench provided in this application.

[0032] The 48V test bench shown in the figure includes: 48V power supply 11, ZCU12 and related load equipment.

[0033] The ZCU12 integrates a DC / DC converter 121. The input of the DC / DC converter 121 is connected to a 48V DC power supply to convert the 48V voltage to a 12V voltage, thereby powering the system base chip (SBC) and the 12V load.

[0034] The remaining 48V loads are powered and driven by the ZCU directly outputting 48V.

[0035] The 48V loads shown in the diagram mainly include the DC motor 14, the seat massage module 15, and the blower 16. Other 48V electrical appliances may also be present in the vehicle, which will not be detailed here.

[0036] Other loads 17 may include 48V loads and 12V loads, which are not specifically shown.

[0037] In addition, ZCU12 can acquire the current and fault feedback of each load, as well as collect the status of the switch / sensor 13.

[0038] To verify whether the ZCU12's functional development meets the design requirements, various functions need to be tested. Typically, debugging tools can be used at the lower level to connect to the ZCU's microcontroller and access, read, and modify the microcontroller's registers and memory via JTAG or SWD interfaces. This will be explained in detail below.

[0039] See Figure 2 The figure is a schematic diagram of the test apparatus required for an existing test method provided in this application.

[0040] The current testing method requires PC21 as the host computer. PC21 is connected to the JTAG or SWD interface on the test target 23 via power debugging structure 22 and debugging cable. Test target 23 is the microcontroller of ZCU. AC / DC adapter 22 is used to connect to an external 220V power supply in special cases.

[0041] PC21 can view the current value by reading the register value, and modifying the register value can control the output to drive the motor, etc. This type of testing method is complex to operate and has a high risk. Improper modification may damage the test target 23 during the test or cause the system to crash. Therefore, it is only suitable for developers who have a very good understanding of software and hardware, and its practicality is low.

[0042] To address the aforementioned technical problems, this application provides a testing method, testing apparatus, equipment, and storage medium for low-voltage power supply systems. This reduces the complexity and risk of testing operations, lowers the skill requirements for testing personnel, and offers high usability. To enable those skilled in the art to better understand the solutions presented in this application, the technical solutions in the embodiments of this application will be described below with reference to the accompanying drawings.

[0043] The terms "first" and "second" used in this application description are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0044] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed connection, a detachable connection, or an integral part; it may be a direct connection or an indirect connection through an intermediate medium.

[0045] See Figure 3 The figure is a flowchart of a testing method provided in an embodiment of this application.

[0046] This method is used to test the low-voltage power supply system of a vehicle. It can be applied to a host computer, which can be a desktop computer, laptop computer, tablet computer, or other possible electronic devices. This application does not specifically limit the application.

[0047] The method includes the following steps:

[0048] S11: Displays the test status information of each power supply object in the low-voltage power supply system on the display interface.

[0049] The host computer in this application embodiment can display the corresponding test status information through the user interface (UI).

[0050] In one possible implementation, the UI specifically refers to a Graphical User Interface (GUI), which provides a more visual and intuitive display and allows for customization of the interface and functional modules according to testing requirements. The GUI can be developed using the Python language and third-party libraries or toolkits such as python-can and PyQt; however, this application does not impose specific limitations on its implementation.

[0051] Test status information indicates the operating status and / or operating parameters of different power supply objects in the power supply system.

[0052] The operating status indicates that the power supply object is in one or more of the following states: powered on, powered off, no fault, fault present, or specific fault type. Specific fault types may include open circuit fault, short circuit fault, impedance abnormality, etc., but this application embodiment does not specify a particular type.

[0053] Operating parameters include, but are not limited to, impedance, operating current, operating voltage, power, and operating time.

[0054] The power supply objects may include, but are not limited to, electrical appliances with an input voltage of 12V, electrical appliances with an input voltage of 48V, controllable switches, sensors, actuators, etc.

[0055] In vehicles, actuators are assemblies of actuators and control valves within an automatic control system. They receive signals from regulators or computers and control the flow rate of the process medium accordingly to achieve regulatory purposes. Automotive actuators are widely used in various control systems, such as braking systems, steering systems, and suspension systems. The function of the actuator is to convert signals from the control system into mechanical energy, thereby achieving control of the vehicle's systems.

[0056] It is understandable that some power supply objects may only display their working status or only their working parameters, while others may display both their working status and working parameters simultaneously.

[0057] S12: In response to a test operation triggered on the display interface, generate a message command corresponding to the test operation to control the first group of power supply objects targeted by the test operation based on the message command.

[0058] In this embodiment of the application, the test operation refers to the operation initiated by the tester on the display interface for the first group of power supply objects. The first group of power supply objects may include at least one power supply object among the power supply objects of the low-voltage power supply system. For example, it may include only one power supply object, or it may include multiple power supply objects at the same time.

[0059] The embodiments of this application do not limit the specific number of power supply objects included in the first group of power supply objects.

[0060] The test operation includes one or more of the following operations for the first group of power supply objects: powering on, powering off, and configuring operating parameters.

[0061] It is understandable that when the first group of power supply objects includes multiple power supply objects, the test operations for each power supply object can be the same or different.

[0062] In one possible implementation, the display interface may include multiple buttons, which users can trigger to initiate test operations. For example, the display interface may include operation buttons such as "on" and "off". When the user clicks a button, a message command associated with the test operation corresponding to the button is generated. Then, the host computer sends the message command to the low-voltage power supply system, thereby controlling the first group of power supply objects targeted by the test operation.

[0063] S13: Obtain the test feedback information corresponding to the first group of power supply objects.

[0064] Upon receiving a message command, the low-voltage power supply system controls the first group of power supply objects to perform test actions matching the test operation, in order to obtain test feedback information corresponding to the first group of power supply objects. The low-voltage power supply system then reports this test feedback information to the host computer.

[0065] The test feedback information indicates the working status and / or working parameters of the first group of power supply objects under the control of message commands.

[0066] For example, when the test feedback information includes the working status, the test feedback information indicates that the power supply object is in one or more of the following states: powered on, powered off, no fault, fault present, and fault type.

[0067] The types of faults may include, but are not limited to, open circuit faults, short circuit faults, impedance abnormalities, etc., and the embodiments of this application do not make specific limitations.

[0068] When the test feedback information includes operating parameters, the test feedback information indicates parameters such as impedance, operating current, operating voltage, power, and operating time of the first group of power supply objects.

[0069] S14: Update the test status information displayed on the interface based on test feedback information.

[0070] After receiving the test feedback information, the host computer can compare the working status and / or working parameters of the first group of power supply objects indicated by the test feedback information with the working status and / or working parameters in the initial state to see if there is a difference. If there is no difference, the original display content is maintained. If there is a difference, the test status information displayed on the display interface is updated according to the test feedback information.

[0071] In summary, the method provided in this application provides an intuitive user interface via a host computer, and the interface and functional modules can be customized according to testing requirements. This solution enables targeted testing of the first group of power supply objects in the low-voltage power supply system under test, and can collect and update the working status and / or working parameters of the first group of power supply objects in real time. Testers can quickly control the first group of power supply objects through test operations triggered by the interface, avoiding direct operation of the underlying layer, improving the reliability and safety of the testing process, reducing the skill requirements of testers, improving testing efficiency, and exhibiting high usability.

[0072] Furthermore, this solution eliminates the need for low-level operations—meaning testers don't need to send and parse specific messages. This eliminates the need for operators to manually review information to familiarize themselves with message content and how to control a particular load, thus improving testing efficiency. Moreover, since information related to messages from low-voltage power supply systems is typically highly confidential, there are many restrictions on its external display. The solution in this application, however, operates through a display interface, avoiding the need to show underlying details and facilitating the demonstration of the testing process.

[0073] The following section will explain the specific implementation method.

[0074] See also Figure 4 and Figure 5 .in, Figure 4 A schematic diagram of a test architecture provided for an embodiment of this application; Figure 5 This is a schematic diagram of the display interface provided in an embodiment of this application.

[0075] Figure 4 The host computer 20 can be a desktop computer, laptop computer, tablet computer, or other possible electronic devices. The solution in this embodiment uses a human-computer interaction interface 20 to input test operations and display test status information. The human-computer interaction interface 20 can be displayed on the screen of the host computer 19 or on an external screen connected to the host computer 19.

[0076] The host computer 19 and the ZCU12 of the low-voltage power supply system can interact via CAN communication.

[0077] Figure 5 The interface described is an example of a human-computer interaction interface and does not constitute a limitation on the technical solution of this application. Taking the first group of power supply objects as a washer (also called a washer motor) as an example, the washer can be used to spray washer fluid on the front and rear windshields of a vehicle. The user can click "Front Wash" or "Rear Wash" on the operation interface to trigger the test operation, thereby causing the ZCU to drive the motor to rotate in both directions. The real-time current value is displayed in the "Current" interface area, and the direction of motor rotation is displayed in the "Disconnect" interface area. After the power supply circuit is disconnected, the "No Fault" interface area will report the open circuit status. Finally, the user can click "Stop" to trigger the test operation again, which can control the ZCU to cut off the power to the motor.

[0078] See Figure 6 The figure is a flowchart of another testing method provided in an embodiment of this application.

[0079] The testing method includes the following steps:

[0080] S21: Configure the CAN channel with the low-voltage power supply system to establish CAN communication with the low-voltage power supply system.

[0081] First, complete the construction of the 48V test bench and connect the ZCU to the power supply and various power supply objects.

[0082] The solution in this application embodiment utilizes the CAN communication function supported by ZCU. Before the test status information is displayed on the display interface, CAN communication is established between the host computer and the low-voltage power supply system under test. This allows the host computer to conveniently read the working status and / or working parameters of each power supply device through ZCU and send power supply and drive commands through CAN messages.

[0083] S22: Receive CAN messages sent by each power supply object in the low-voltage power supply system using CAN communication, and use the CAN messages to obtain the test status information of each power supply object in the low-voltage power supply system.

[0084] The power supply objects may include, but are not limited to, appliances with an input voltage of 12V, appliances with an input voltage of 48V, controllable switches, sensors, actuators, etc. Test status information indicates the operating status and / or operating parameters of different power supply objects in the power supply system.

[0085] After the host computer reads the test status information of different power supply objects through CAN messages, it can parse them according to the pre-recorded CAN communication matrix and DBC file to obtain the specific working status and / or working parameters without manual processing.

[0086] S23: Display the test status information of each power supply object in the low-voltage power supply system on the display interface.

[0087] After the host computer parses the CAN message to obtain the working status and / or working parameters, it can display them on the display interface. It can be understood that since the user has not triggered a test operation, the displayed test status information is the initial message of each power supply object.

[0088] S24: In response to a test operation triggered on the display interface, determine the first group of power supply objects.

[0089] The tester selects the button corresponding to the first group of power supply objects on the interface and triggers the test operation. At this time, the host computer can determine the first group of power supply objects based on the specific button pressed during the test operation. For example, see [link to example]. Figure 5 The first power supply target corresponding to the button in the "Front Cleaning" display area is the cleaning machine. When the user clicks the "Front Cleaning" button on the display interface, the host computer can determine that the first power supply target is the cleaning machine based on the user-triggered button.

[0090] When multiple buttons are pressed on the user's motor display interface, the first group of power supply objects can include multiple power supply objects.

[0091] The test operation includes one or more of the following operations for the first group of power supply objects: powering on, powering off, and configuring operating parameters. For example, if the tester clicks the button corresponding to the button in the "Front Cleaning" display area, the host computer determines that the first group of power supply objects is the cleaning machine, and the test operation is to power the cleaning machine; or, for example, if the tester configures the "Current" option in the "Front Backlight" display area, the host computer determines that the first group of power supply objects is the front backlight, and the test operation is to configure the input current of the front backlight.

[0092] S25: Generate CAN message commands corresponding to the test operations based on the pre-established association between test operations and CAN message commands in the Controller Area Network.

[0093] The message command in this embodiment is a CAN message command, and the host computer sends the CAN message command to the low-voltage power supply system through CAN communication.

[0094] The pre-established association between test operations and CAN message commands in the controller area network can be configured on the host computer through code embedding. When the host computer needs to generate CAN message commands based on the test operations, it generates message commands for the first group of power supply objects based on the embedded code.

[0095] There is a correspondence between the CAN message command and the first group of power supply objects and the specific test operation. That is, the message command can indicate the test object and the specific test operation, so that after receiving and parsing the CAN message command, the ZCU can clearly identify the first group of power supply objects and the specific test operation.

[0096] S26: Obtain the test feedback information corresponding to the first group of power supply objects.

[0097] Once the ZCU identifies the first group of power supply objects and the specific test operation, it will control the corresponding first group of power supply objects to carry out the test operation. For example, if the test operation is to power on, the ZCU will start supplying power to the first group of power supply objects; or if the test operation is to configure the input voltage of the first group of power supply objects to a first voltage, the ZCU will start or maintain supplying power to the first group of power supply objects and control the input voltage of the first group of power supply objects to the first voltage.

[0098] The test feedback information indicates the working status and / or working parameters of the first group of power supply objects under the control of message commands.

[0099] After the ZCU controls the first group of power supply objects based on message commands, it can collect the working status and / or working parameters of the first group of power supply objects and upload them to the host computer via CAN messages. That is, the host computer obtains the test feedback information corresponding to the first group of power supply objects through CAN messages.

[0100] S27: Update the test status information displayed on the interface using test feedback information.

[0101] After receiving the test feedback information, the host computer can compare the working status and / or working parameters of the first group of power supply objects indicated by the test feedback information with the working status and / or working parameters in the initial state to see if there is a difference. If there is no difference, the original display content is maintained. If there is a difference, the test status information displayed on the display interface is updated according to the test feedback information.

[0102] The following example, using the first group of power supply objects including actuators, illustrates the test steps.

[0103] See Figure 7 The figure is a flowchart of the test method for the actuator provided in the embodiment of this application. S31: Set up a 48V test bench, and connect the ZCU to the power supply and the actuator.

[0104] Testers can first set up a 48V test bench and connect the ZCU to the power supply and actuator. This embodiment uses a cleaning motor as the actuator for illustration.

[0105] S32: Configure the CAN channel between the ZCU and the host computer.

[0106] Testers can configure the CAN channel between the ZCU and the host computer to establish CANCAN communication between them.

[0107] S33: Open the UI interface of the host computer.

[0108] The tester opens the UI interface of the host computer and selects the first group of power supply objects for the test operation. In this embodiment, the first group of power supply objects is the actuator, specifically the cleaning motor.

[0109] S34: Click the "Open" button to start the actuator and set the speed and direction.

[0110] After the tester triggers the test operation on the display interface, the host computer generates a CAN message command corresponding to the test operation and sends the CAN message command through CAN communication to make the ZCU control the actuator to run.

[0111] The ZCU can collect test feedback information of the cleaning motor and report it to the host computer via CAN message;

[0112] S35: The UI interface updates the test status information, which includes the current value.

[0113] After receiving the CAN message, the host computer parses the CAN message to determine that the cleaning motor is operating normally, and displays the test status information on the display interface. The test status information may include the current value.

[0114] In one possible implementation, the test status information can also indicate that the cleaning machine is operating normally, and may also include other information such as power.

[0115] S36: Manually disconnect the actuator power supply circuit.

[0116] At this point, the tester can manually disconnect the actuator from the ZCU to stop the ZCU from supplying power to the actuator, and then check the UI interface to see if the current test status information of the actuator has changed.

[0117] S37: The UI updates the current value to zero and indicates an open circuit fault.

[0118] At this point, since the user manually disconnected the power supply circuit of the actuator and did not trigger a power-off test operation on the display interface, the host computer can determine that the actuator is disconnected based on the CAN message sent by the ZCU, and thus determine that the machine has an open circuit fault. Furthermore, based on the CAN message, the host computer determines that the actuator's operating current is 0 and updates the current value displayed on the display interface to zero.

[0119] S38: Manually connect the actuator power supply circuit.

[0120] Afterwards, the operator can manually connect the actuator power supply circuit to restore power supply to the actuator via the ZCU, and then check the current actuator test status information on the UI interface to see if it has been restored.

[0121] S39: The UI interface updates the current value to non-zero and indicates that the open circuit fault has disappeared.

[0122] Since the actuator has regained power, the host computer can confirm that the actuator is properly connected and the open circuit fault has disappeared based on the CAN message sent by the ZCU. It can also determine the actuator's operating current based on the CAN message and update the current value on the display interface. Understandably, once the actuator's operating state stabilizes, the updated current value can be the same as the current value in S35.

[0123] S40: Click the "Close" button to stop supplying power to the actuator.

[0124] At this point, the operator triggers a test operation to stop powering the actuator on the display interface by clicking the "Close" button. The host computer generates a CAN message command corresponding to this test operation and sends the CAN message command through CAN communication to make the ZCU stop powering the actuator. Then, the operator can check on the UI interface whether the current test status information of the actuator has changed.

[0125] S41: The UI interface updates the current value to zero.

[0126] At this point, the ZCU stops supplying power to the actuator. The host computer can determine that the actuator has stopped working based on the CAN message sent by the ZCU and update the current value to zero on the display interface. Through the above test process, it is possible to detect whether the ZCU and the actuator can be connected and disconnected normally.

[0127] In summary, the solution provided in this application provides an intuitive user interface through a host computer, enabling testers to quickly control the first group of power supply objects via interface-triggered test operations. This avoids direct manipulation of the underlying layers, improving the reliability and safety of the testing process, reducing the skill requirements for testers, increasing testing efficiency, and providing high usability. Furthermore, since no underlying operations are required—that is, testers do not need to send and parse CAN messages—operators do not need to manually consult the CAN Communication Matrix and DBC files to understand the content of each CAN message and how to control a specific load, further improving testing efficiency.

[0128] The CAN communication matrix is ​​usually defined by the vehicle manufacturer, and each node in the vehicle network needs to follow this communication matrix to complete information interaction and sharing.

[0129] DBC files are a CAN bus diagnostic file format, specifically an XML file used in CAN bus diagnostic tools to define the CAN bus communication protocol. DBC files contain information such as CAN communication signals, message IDs, data lengths, and cycles, which can help developers develop, test, diagnose, and analyze CAN communication protocols.

[0130] CAN communication matrices and DBC files are usually highly confidential information, and therefore there are many restrictions on their external display. However, the solution in this application operates through a display interface, which can avoid displaying the underlying details and facilitate the external demonstration of the testing process.

[0131] Based on the low-voltage power supply system testing method provided in the above embodiments, this application also provides a low-voltage power supply system testing device, which will be described in detail below with reference to the accompanying drawings.

[0132] See Figure 8 The figure is a schematic diagram of a low-voltage power supply system testing device provided in an embodiment of this application.

[0133] The device includes: a display module 41, a control module 42, an acquisition module 43, and an update module 44.

[0134] Display module 41 is used to display the test status information of each power supply object in the low voltage power supply system on the display interface. The test status information indicates the working status and / or working parameters of different power supply objects in the power supply system.

[0135] The control module 42 is used to generate a message command corresponding to the test operation in response to the test operation triggered on the display interface, so as to control the first group of power supply objects targeted by the test operation based on the heat preservation command. The first group of power supply objects is at least one of the power supply objects in the low-voltage power supply system.

[0136] The acquisition module 43 is used to acquire the test feedback information corresponding to the first group of power supply objects. The test feedback information indicates the working status and / or working parameters of the first group of power supply objects under the control of the message command.

[0137] Update module 44 is used to update the test status information displayed on the display interface based on test feedback information.

[0138] In one possible implementation, the test apparatus further includes a communication module. This communication module is pre-configured with a CAN channel on a controller area network (CAN) to establish CAN communication with the low-voltage power supply system. The message commands are CAN message commands, which are sent to the low-voltage power supply system via CAN communication.

[0139] In one possible implementation, the display module 41 is specifically used to receive CAN messages sent by each power supply object of the low-voltage power supply system using the CAN communication; obtain the test status information of each power supply object of the low-voltage power supply system using the CAN messages; and display the test status information corresponding to each power supply object of the low-voltage power supply system on the display interface.

[0140] In one possible implementation, the message command is a CAN message command. The control module 42 is specifically used to respond to the test operation triggered on the display interface, determine the first group of power supply objects, and generate a CAN message command corresponding to the test operation based on the pre-established association between the test operation and the controller local area network CAN message command.

[0141] In one possible implementation, the test operation includes one or more of the following operations for the first group of powered objects: powering on, powering off, and configuring operating parameters.

[0142] In one possible implementation, the operating status indicates that the powered object is in one or more of the following states: powered on, powered off, fault-free, fault present, and fault type. Operating parameters include at least one of the following: impedance, operating current, operating voltage, power, and operating time.

[0143] In one possible implementation, the power supply object includes at least one of the following: an appliance with an input voltage of 12V, an appliance with an input voltage of 48V, a controllable switch, a sensor, and an actuator.

[0144] Furthermore, embodiments of this application also provide another electronic device, such as... Figure 9 As shown, the device 60 includes a processor 61, a memory 63, a bus 64, and a communication interface 62. The processor 61 and the memory 63 are connected via the bus 64. The memory 63 stores one or more programs, which include instructions. When executed by the processor, the instructions cause the processor to perform the aforementioned low-voltage power supply system test method. The communication interface 62 can establish CAN communication with the ZCU of the low-voltage power supply system.

[0145] Furthermore, embodiments of this application also provide a computer-readable storage medium storing instructions that, when executed on an electronic device, cause the electronic device to perform the aforementioned low-voltage power supply system testing method.

[0146] Furthermore, this application also provides a computer program product that, when run on an electronic device, causes the electronic device to perform the aforementioned low-voltage power supply system testing method.

[0147] Furthermore, this application embodiment also provides a computer-readable storage medium storing a program, which, when executed by a processor, implements the low-voltage power supply system testing method executed by the host computer in the above embodiments.

[0148] This application also provides a testing system, which may include the host computer described above and the low-voltage power supply system under test.

[0149] Computer-readable storage media include both permanent and non-permanent, removable and non-removable media, and can be implemented using any method or technology to store information. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically-erasable programmable read-only memory (EEPROM), flash memory, or other memory technologies.

[0150] Specifically, the computer-readable storage medium includes program instructions that instruct an electronic device to perform the aforementioned low-voltage power supply system test method.

[0151] This application also provides a computer program product containing instructions. The computer program product may be a software or program product containing instructions, capable of running on an electronic device, or stored on any usable medium. When the computer program product runs on the electronic device, it causes the electronic device to perform the low-voltage power supply system testing method described above.

[0152] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0153] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0154] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A testing method for a low-voltage power supply system, characterized in that, The method for testing a vehicle's low-voltage power supply system includes: The test status information corresponding to each power supply object of the low voltage power supply system is displayed on the display interface. The test status information indicates the working status and / or working parameters of the power supply object. In response to a test operation triggered on the display interface, a message command corresponding to the test operation is generated to control the first group of power supply objects targeted by the test operation based on the message command. The first group of power supply objects is at least one of the power supply objects in the low-voltage power supply system. Obtain test feedback information corresponding to the first group of power supply objects, wherein the test feedback information indicates the working status and / or working parameters of the first group of power supply objects under the control of the message command; The test status information displayed on the display interface is updated based on the test feedback information.

2. The method according to claim 1, characterized in that, Before displaying the test status information corresponding to each power supply object of the low-voltage power supply system on the display interface, the method further includes: Configure a CAN channel between the controller area network and the low-voltage power supply system to establish CAN communication with the low-voltage power supply system, wherein the message command is a CAN message command, and the CAN message command is sent to the low-voltage power supply system through the CAN communication.

3. The method according to claim 2, characterized in that, The step of displaying the test status information corresponding to each power supply object of the low-voltage power supply system on the display interface specifically includes: Receive CAN messages sent by each power supply object of the low-voltage power supply system using the CAN communication; The test status information of each power supply object in the low-voltage power supply system is obtained using the CAN message; The display interface shows the test status information corresponding to each power supply object of the low-voltage power supply system.

4. The method according to claim 1, characterized in that, The message command is a CAN message command. The step of generating a message command corresponding to the test operation triggered on the display interface specifically includes: In response to a test operation triggered on the display interface, the first group of power supply objects is determined; Based on the pre-established association between the test operation and the CAN message command of the controller area network, a CAN message command corresponding to the test operation is generated.

5. The method according to claim 1, characterized in that, The test operation includes one or more of the following operations for the first group of power supply objects: Power on, power off, configure operating parameters.

6. The method according to claim 1, characterized in that, The operating status indicates that the power supply object is in one or more of the following states: Power on, power off, no fault, fault present, fault type; The operating parameters include at least one of the following: Impedance, operating current, operating voltage, power, and operating time.

7. The method according to claim 1, characterized in that, The power supply object includes at least one of the following: Appliances with an input voltage of 12V, appliances with an input voltage of 48V, controllable switches, sensors, and actuators.

8. A testing device for a power supply system, characterized in that, include: Display module, control module, acquisition module, and update module; The display module is used to display the test status information corresponding to each power supply object of the low voltage power supply system on the display interface. The test status information indicates the working status and / or working parameters of different power supply objects of the power supply system. The control module is configured to respond to a test operation triggered on the display interface, generate a message command corresponding to the test operation, and control the first group of power supply objects targeted by the test operation based on the message command. The first group of power supply objects is at least one of the power supply objects in the low-voltage power supply system. The acquisition module is used to acquire test feedback information corresponding to the first group of power supply objects. The test feedback information indicates the working status and / or working parameters of the first group of power supply objects under the control of the message command. The update module is used to update the test status information displayed on the display interface based on the test feedback information.

9. An electronic device, characterized in that, The electronic device includes a processor and a memory; The processor is coupled to the memory; The memory is used to store instructions; The processor is used to execute computer programs or instructions stored in the memory to implement the method as described in any one of claims 1-7.

10. A computer storage medium, characterized in that, The computer storage medium is used to store a computer program, which, when executed, implements the method as described in any one of claims 1-7.

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