Power system test method and device, computer equipment and storage medium

Abstract

The invention discloses a power system testing method and device, computer equipment and a storage medium, relates to the technical field of power testing, and is used for solving the problem of low power system detection efficiency in related technologies. The method comprises the following steps: acquiring a first state-of-charge value of a vehicle battery; determining a test execution sequence corresponding to a range extending direct drive mode, a range extending power generation mode and a pure power mode in the vehicle power system according to threshold comparison of the first charge state values; according to the test execution sequence, executing driving control of the vehicle in each mode, and according to a data acquisition strategy corresponding to each mode, obtaining vehicle data of the vehicle in each mode; and obtaining a test result corresponding to the vehicle power system according to the vehicle data of the vehicle in each mode.

Description

Technical Field

[0001] The present application relates to the field of power testing technology, and in particular to a power system testing method, device, computer equipment and storage medium. Background Art

[0002] With the increase in the number of new energy vehicles, the functions of new energy vehicles are becoming more and more complex, and the production lines are exposing more and more detection problems. In order to ensure the consistency of product production quality, the power system of the whole vehicle needs to be fully tested before the whole vehicle is produced. However, the relevant technology mainly relies on workers to drive and control the vehicle according to fixed test steps, and the workers collect and analyze the vehicle data during driving control, resulting in low efficiency of power system detection. Summary of the invention

[0003] Based on this, a power system testing method, device, computer equipment and storage medium are provided to solve the problem of low power system testing efficiency caused by workers driving and controlling the vehicle according to fixed test steps and collecting and analyzing vehicle data during driving control in related technologies.

[0004] In a first aspect, the present application provides a power system testing method, the method comprising:

[0005] Obtaining a first state of charge value of a vehicle battery;

[0006] Determining the test execution order corresponding to the extended-range direct drive mode, the extended-range power generation mode and the pure electric mode in the vehicle power system according to the threshold comparison of the first state of charge value;

[0007] Executing driving control of the vehicle in each mode according to the test execution sequence, and acquiring vehicle data of the vehicle in each mode according to a data collection strategy corresponding to each mode;

[0008] According to the vehicle data of the vehicle in each mode, the test results corresponding to the vehicle power system are obtained.

[0009] In one embodiment, determining the test execution order corresponding to the extended-range direct drive mode, the extended-range power generation mode and the pure electric mode in the vehicle power system according to the threshold comparison of the first state of charge value includes:

[0010] When the first state of charge value is greater than a preset threshold, determining the test execution order to be the extended-range direct drive mode, the pure electric mode, and the extended-range power generation mode;

[0011] When the first state of charge value is less than or equal to the preset threshold value, the test execution order is indeed the extended-range power generation mode, the extended-range direct drive mode, and the pure electric mode.

[0012] In one embodiment, executing driving control of the vehicle in each mode according to the test execution sequence includes:

[0013] When the first state of charge value is greater than the preset threshold, controlling the vehicle mode to switch to the extended-range direct drive mode, and executing driving control of the vehicle in the extended-range direct drive mode according to the driving strategy corresponding to the extended-range direct drive mode;

[0014] In response to the driving control in the extended-range direct-drive mode being completed, controlling the vehicle mode to switch to the pure electric mode, and executing the driving control of the vehicle in the pure electric mode according to the driving strategy corresponding to the pure electric mode;

[0015] In response to the driving control in the pure electric mode being executed, obtaining a second state of charge value of a vehicle battery;

[0016] When the second state of charge value is greater than the preset threshold, controlling the vehicle battery to discharge;

[0017] When the second state of charge value is less than or equal to the preset threshold, the vehicle mode is controlled to switch to the extended-range power generation mode, and driving control of the vehicle in the extended-range power generation mode is performed according to a driving strategy corresponding to the extended-range power generation mode.

[0018] In one embodiment, obtaining the test results corresponding to the vehicle power system according to the vehicle data of the vehicle in each mode includes:

[0019] The test results in the extended range power generation mode are obtained, including:

[0020] Obtaining a first engine speed within a first starting vehicle speed range, and determining whether the range extender is successfully started based on the duration that the first engine speed reaches a starting speed threshold; and / or,

[0021] A second engine speed within the shutdown vehicle speed range is obtained, and whether the range extender is successfully shut down is determined based on the duration for which the second engine speed reaches the shutdown speed threshold.

[0022] In one embodiment, obtaining the test results corresponding to the vehicle power system according to the vehicle data of the vehicle in each mode further includes:

[0023] The test results in the extended-range direct drive mode are obtained, including:

[0024] Acquiring a first clutch state within the vehicle speed range, and determining whether the clutch engagement is successful based on the duration of the first clutch state being in the engagement state; and / or,

[0025] A second clutch state within a disengagement vehicle speed range is acquired, and whether the clutch disengagement is successful is determined based on the second clutch state.

[0026] In one embodiment, obtaining the test results corresponding to the vehicle power system according to the vehicle data of the vehicle in each mode further includes:

[0027] The test results in the pure electric mode are obtained, including:

[0028] Acquiring a third engine speed within the second starting vehicle speed range, and determining whether the range extender is abnormally started according to the duration for which the third engine speed reaches the starting speed threshold; and / or,

[0029] A vehicle gear position signal is acquired, and whether a gear shift function is abnormal is determined according to a change of the vehicle gear position signal.

[0030] In one embodiment, after obtaining the test results corresponding to the vehicle power system according to the vehicle data in each mode, the method further includes:

[0031] The test results are displayed on a display screen, and the vehicle data of the vehicle in each mode is rendered into a test report.

[0032] In a second aspect, the present application provides a power system testing device, the device comprising:

[0033] An acquisition module, used to acquire a first state of charge value of a vehicle battery;

[0034] A determination module, configured to determine, based on a threshold comparison of the first state of charge value, a test execution order corresponding to an extended-range direct drive mode, an extended-range power generation mode, and a pure electric mode in a vehicle power system;

[0035] A test module, used to execute driving control of the vehicle in each mode according to the test execution sequence, and obtain vehicle data of the vehicle in each mode according to the data collection strategy corresponding to each mode;

[0036] A mapping module is used to obtain test results corresponding to the vehicle power system according to the vehicle data in each mode.

[0037] In a third aspect, the present application provides a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the power system testing method of the first aspect when executing the computer program.

[0038] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the power system testing method of the first aspect described above.

[0039] The above-mentioned power system testing method, device, computer equipment and storage medium determine the test execution order corresponding to the extended-range direct drive mode, extended-range power generation mode and pure electric mode in the vehicle power system according to the first state of charge value of the vehicle battery, so as to avoid the inability to perform tests in the extended-range direct drive mode due to insufficient state of charge value, or the inability to perform tests in the range extender charging mode due to excessive state of charge value, and execute the driving control of the vehicle in each mode based on the test execution order, and the data collection strategy corresponding to each mode, collect the vehicle data of the vehicle in each mode, so as to automatically generate test results according to the vehicle data of the vehicle in each mode, realize the automatic and comprehensive testing of the power system, and improve the testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of the architecture of a power system test in one embodiment;

[0041] Figure 2 A schematic diagram of the architecture of a power system in one embodiment;

[0042] Figure 3 A schematic diagram of a flow chart of a power system testing method in one embodiment;

[0043] Figure 4 is a structural block diagram of a power system testing device in one embodiment;

[0044] Figure 5 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The specific operating methods in the method embodiments can also be applied to device embodiments or system embodiments. It should be noted that in the description of the present application, "multiple" is understood as "at least two". "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, and A and B exist, and B exists alone. A is connected to B, which can represent: A is directly connected to B and A is connected to B through C. In addition, in the description of the present application, words such as "first" and "second" are only used to distinguish the purpose of description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0046] In order to facilitate understanding by those skilled in the art, the technical terms involved in the embodiments of the present application are first explained.

[0047] (1) The On-Board Diagnostics (OBD) interface is an international standard automotive communication interface. Through the OBD interface, maintenance personnel can use professional diagnostic tools to read the diagnostic code in the vehicle computer to quickly locate and solve the problem. At the same time, the OBD interface also supports the real-time transmission of vehicle data, providing convenience for vehicle performance monitoring, function testing, etc.

[0048] (2) Chassis dynamometer is an indoor bench test equipment used to test vehicle dynamics, multi-operating emission indicators, fuel indicators and other performance. The chassis dynamometer simulates the road surface through a roller, calculates the road simulation equation, and simulates it with a loading device to achieve simulation of various vehicle operating conditions.

[0049] In the technical solution of this application, the acquisition, transmission, storage, and use of data are in compliance with the requirements of relevant national laws and regulations.

[0050] Before introducing the power system testing method provided in the embodiment of the present application, in order to facilitate understanding, the technical background of the embodiment of the present application is first introduced in detail.

[0051] With the increase in the number of new energy vehicles, the functions of new energy vehicles are becoming more and more complex, and the production lines are exposing more and more detection problems. In order to ensure the consistency of product production quality, the power system of the whole vehicle needs to be fully tested before the whole vehicle is produced. However, the relevant technology mainly relies on workers to drive and control the vehicle according to fixed test steps, and the workers collect and analyze the vehicle data during driving control. There may be false detections and missed detections, resulting in low efficiency of power system detection.

[0052] In view of this, the embodiments of the present application provide a power system testing method, apparatus, computer equipment and storage medium to solve the problem in the related technology that workers drive and control the vehicle according to fixed test steps, and the workers collect and analyze the vehicle data during driving control, which may result in false detection and missed detection, leading to low power system detection efficiency.

[0053] The following is a brief introduction to the test architecture to which the technical solution of the embodiment of the present application can be applied, wherein the test architecture introduced below is only used to illustrate the embodiment of the present application and is not limited. In specific implementation, the technical solution provided by the embodiment of the present application can be flexibly applied according to actual needs.

[0054] The power system testing method provided in this application can be applied to Figure 1The test architecture is shown in Figure 1. Figure 1 As shown, it includes a test device 10, a vehicle 11 and a chassis dynamometer 12. The test device 10 and the vehicle 11 are placed on the chassis dynamometer 12, and the vehicle 11 is connected to the test device 10 via an OBD interface.

[0055] The test device 10 may be a terminal device with computing capabilities, such as a laptop computer, a desktop computer, or a tablet computer, and is not limited here.

[0056] In the embodiment of the present application, before conducting a power system test on the vehicle 11, first, the test device 10 needs to establish secure access to the vehicle 11 through the OBD interface and complete the OBD communication establishment. If the OBD communication establishment is not completed, the test device 10 sends a prohibition operation signal to the chassis dynamometer 12, and the vehicle 11 reports the corresponding fault through the OBD interface.

[0057] In response to the completion of the OBD communication establishment, the test device 10 controls the vehicle 11 to enter the factory mode (the test device 10 sends a factory mode start signal to the vehicle 10 through the OBD interface), and determines whether the factory mode start signal fed back by the vehicle 10 is received. If the test device 10 does not receive the factory mode start signal fed back by the vehicle 11, the test device 10 sends a prohibition operation signal to the chassis dynamometer 12, and the vehicle 11 reports the corresponding fault through the OBD interface.

[0058] If the test device 10 receives a signal from the vehicle 11 that the factory mode has been turned on, the test device 10 determines the dynamic test case corresponding to the power system of the vehicle 11 and obtains the first state of charge (SOC) value of the battery of the vehicle 11. Then, based on the threshold comparison of the first SOC value, the test execution order corresponding to the extended-range direct drive mode, extended-range power generation mode and pure electric mode in the power system of the vehicle 11 is determined, and the vehicle is tested in each mode according to the test execution order, and the corresponding test results are generated.

[0059] In one embodiment, a schematic diagram of the architecture of a vehicle 11 power system is provided, such as Figure 2 As shown, the vehicle 11 includes: an engine 20, a generator 21, a clutch 22, a drive motor 23 and a battery 24. The vehicle 11 has function switches corresponding to the extended-range power generation mode, the extended-range direct drive mode and the pure electric mode.

[0060] In the extended-range power generation mode, the engine 20 starts and drives the generator 21 to generate electricity. Part of the electricity is used to drive the motor 23 so that the drive motor 23 drives the wheels, and the other part of the electricity is used to charge the battery 24; in the extended-range direct drive mode, the engine 20 starts and the clutch 22 engages, so that the wheels are directly driven by the engine 20; in the pure electric mode, the battery 24 directly provides electricity to the drive motor 23 so that the drive motor 23 drives the wheels.

[0061] The technical solution provided in the embodiments of the present application is described in detail below with reference to the accompanying drawings and implementation methods.

[0062] Figure 3 FIG. 1 is a flow chart of a power system testing method in an embodiment. The flow chart can be executed by a power system testing device. The device can be implemented by software, hardware, or a combination of software and hardware. Figure 3 As shown, the process includes the following steps:

[0063] S301, obtaining a first state of charge value of a vehicle battery;

[0064] in, Figure 1 The power system architecture of vehicle 11 is as follows Figure 2 shown.

[0065] S302, determining a test execution order corresponding to an extended-range direct drive mode, an extended-range power generation mode, and a pure electric mode in a vehicle power system according to a threshold comparison of the first state of charge value;

[0066] S303, executing driving control of the vehicle in each mode according to the test execution sequence, and acquiring vehicle data of the vehicle in each mode according to the data collection strategy corresponding to each mode;

[0067] S304, obtaining test results corresponding to the vehicle power system according to the vehicle data in each mode.

[0068] In S302, it is exemplified that since the tests in the extended-range direct drive mode and the extended-range power generation mode have requirements for the SOC value, while the pure electric mode does not, the test execution order corresponding to the extended-range direct drive mode, the extended-range power generation mode and the pure electric mode in the power system of the vehicle 11 can be determined according to the threshold comparison of the first SOC value, including but not limited to:

[0069] When the first SOC value is greater than the preset threshold, the test execution order is determined to be the extended-range direct drive mode, the pure electric mode, and the extended-range power generation mode; when the first SOC value is less than or equal to the preset threshold, the test execution order is determined to be the extended-range power generation mode, the extended-range direct drive mode, and the pure electric mode. Among them, the preset threshold can be 70%, and the specific value depends on the situation and is not limited here.

[0070] Through the above method, when the first state of charge value is greater than the preset threshold, the test in the extended-range direct drive mode is first performed, and when the first state of charge value is less than or equal to the preset threshold, the test in the extended-range power generation mode is first performed, so as to avoid the inability to perform the test in the extended-range direct drive mode due to insufficient SOC value, or the inability to perform the test in the range extender charging mode due to excessive SOC value.

[0071] In one embodiment, when the first SOC value is greater than a preset threshold, the test execution sequence is determined to be the extended-range direct drive mode, the pure electric mode, and the extended-range power generation mode, and the driving control of the vehicle 11 in each mode is performed according to the test execution sequence, including but not limited to:

[0072] When the first SOC value is greater than a preset threshold, the vehicle mode is controlled to switch to the extended-range direct drive mode, and according to the driving strategy corresponding to the extended-range direct drive mode, the driving control of the vehicle 11 in the extended-range direct drive mode is executed.

[0073] In response to the completion of the driving control in the extended-range direct drive mode, the vehicle mode is controlled to switch to the pure electric mode, and the driving control of the vehicle 11 in the pure electric mode is executed according to the driving strategy corresponding to the pure electric mode.

[0074] In response to the completion of the driving control in the pure electric mode, a second SOC value of the vehicle battery 24 is obtained; when the second SOC value is greater than a preset threshold, the vehicle battery 24 is controlled to discharge; when the second SOC value is less than or equal to the preset threshold, the vehicle mode is controlled to switch to the extended-range power generation mode, and according to the driving strategy corresponding to the extended-range power generation mode, the driving control of the vehicle 11 in the extended-range power generation mode is executed.

[0075] Through the above method, in response to the completion of driving control in the extended-range direct drive mode, since the extended-range direct drive mode does not reduce the SOC value of the vehicle battery, but maintains the SOC value within a range, it is necessary to first perform driving control in the pure electric mode to appropriately reduce the SOC value of the vehicle battery. In response to the completion of driving control in the pure electric mode, the second state of charge value of the vehicle battery is obtained, and when the second state of charge value is greater than a preset threshold, the vehicle battery is controlled to discharge, ensuring that the test in the extended-range power generation mode can be smoothly performed to avoid the problems of missed detection and wrong detection.

[0076] In S303, it is exemplarily explained that the driving control of the vehicle 11 in each mode is executed, including but not limited to:

[0077] Control the vehicle mode to switch to the extended-range power generation mode, switch the vehicle gear to the driving (D) gear, and execute the driving control of the vehicle 11 in the extended-range power generation mode according to the driving strategy corresponding to the extended-range power generation mode, including but not limited to:

[0078] In response to the test device 10 determining through the OBD port that the vehicle mode is the extended-range power generation mode and the vehicle gear is the D gear, the test device 10 controls the vehicle 11 to accelerate and obtains a first power generation vehicle speed;

[0079] In response to the first power generation vehicle speed being greater than or equal to the first power generation vehicle speed threshold, sending an accelerator pedal release instruction to the vehicle 11, so that the vehicle 11 executes the accelerator pedal release instruction, starts coasting, and obtains a second power generation vehicle speed;

[0080] In response to the second power generation vehicle speed being less than or equal to the second power generation vehicle speed threshold, sending a brake pedal pressing instruction to the vehicle 11 so that the vehicle 11 executes the brake pedal pressing instruction and acquires a third power generation vehicle speed;

[0081] In response to the third power generation vehicle speed being less than or equal to the third power generation vehicle speed threshold, sending a brake pedal release instruction to the vehicle 11, so that the vehicle 11 executes the brake pedal release instruction, the vehicle enters idling, and obtains the duration of idling;

[0082] In response to the idling continuing for the first time period, the vehicle 11 is controlled to decelerate to stop.

[0083] Among them, the first power generation speed threshold can be 60km / h (kilometers per hour), the second power generation speed threshold can be 40km / h, the third power generation speed threshold can be 10km / h, and the first duration can be 10s. The specific values ​​of the first power generation speed threshold, the second power generation speed threshold, the third power generation speed threshold and the first duration depend on the situation and are not limited here.

[0084] Optionally, the test device 10 may also display the driving strategy corresponding to the above-mentioned extended-range power generation mode on the display screen of the test device 10 to prompt the tester to drive the vehicle 11 according to the following steps:

[0085] 1. After accelerating the vehicle 11 to ≥ 60 km / h, release the accelerator pedal and coast;

[0086] 2. In response to the vehicle speed decreasing to ≤40 km / h, the brake pedal is depressed;

[0087] 3. In response to the vehicle speed slowly decreasing to ≤10km / h, release the brake pedal;

[0088] 4. After the vehicle 11 has been idling for 10 seconds, the vehicle 11 is controlled to decelerate to a stop.

[0089] Control the vehicle mode to switch to the extended-range direct drive mode, switch the vehicle gear to the D gear, and execute driving control of the vehicle 11 in the extended-range direct drive mode according to the driving strategy corresponding to the extended-range direct drive mode, including but not limited to:

[0090] In response to the test device 10 determining through the OBD port that the vehicle mode is the extended-range direct drive mode and the vehicle gear is the D gear, the test device 10 controls the vehicle 11 to accelerate and obtains a first direct drive vehicle speed;

[0091] In response to the first direct drive vehicle speed being greater than or equal to the first direct drive vehicle speed threshold, and the first direct drive vehicle speed lasting for a second time period, sending an accelerator pedal release instruction or a brake pedal depression instruction to the vehicle 11, so that the vehicle 11 executes the accelerator pedal release instruction or the brake pedal depression instruction, and obtains a second direct drive vehicle speed;

[0092] In response to the second direct drive vehicle speed being less than or equal to the second direct drive vehicle speed threshold, the vehicle 11 is controlled to decelerate to a stop.

[0093] Among them, the first direct drive vehicle speed threshold can be 70km / h, the second direct drive vehicle speed threshold can be 40km / h, and the second duration can be 10s. The specific values ​​of the first direct drive vehicle speed threshold, the second direct drive vehicle speed threshold and the second duration depend on the circumstances and are not limited here.

[0094] Optionally, the test device 10 may also display the driving strategy corresponding to the extended-range direct drive mode on a display screen of the test device 10 to prompt the tester to drive the vehicle 11 according to the following steps:

[0095] 1. Accelerate the vehicle 11 steadily to a speed of ≥70 km / h and maintain the speed for more than 10 seconds;

[0096] 2. Release the accelerator pedal or press the brake pedal;

[0097] 3. In response to the vehicle 11 decelerating to ≤40 km / h, control the vehicle 11 to decelerate to a stop.

[0098] Control the vehicle mode to switch to the pure electric mode, switch the vehicle gear to the D gear, and execute the driving control of the vehicle 11 in the pure electric mode according to the driving strategy corresponding to the pure electric mode, including but not limited to:

[0099] In response to the test device 10 determining through the OBD port that the vehicle mode is the pure electric mode and the vehicle gear is the D gear, the test device 10 controls the vehicle 11 to accelerate and obtains a first vehicle speed;

[0100] In response to the first vehicle speed being greater than or equal to the first vehicle speed threshold, sending an accelerator pedal release instruction to the vehicle 11, so that the vehicle 11 executes the accelerator pedal release instruction, and obtains a second vehicle speed;

[0101] In response to the second vehicle speed being less than or equal to the second vehicle speed threshold, sending a brake pedal pressing command to the vehicle 11, so that the vehicle 11 executes the brake pedal pressing command, decelerates to a stop, and then controls the vehicle gear to switch to a reverse (R) gear;

[0102] In response to the vehicle gear being in the R gear, controlling the vehicle 11 to accelerate and acquiring a third vehicle speed;

[0103] In response to the third vehicle speed being greater than or equal to the third vehicle speed threshold, the vehicle 11 is controlled to decelerate to stop.

[0104] Among them, the first vehicle speed threshold can be 60km / h, the second vehicle speed threshold can be 40km / h, and the third vehicle speed threshold can be 10km / h. The specific values ​​of the first vehicle speed threshold, the second vehicle speed threshold and the third vehicle speed threshold depend on the situation and are not limited here.

[0105] Optionally, the test device 10 may also display the driving strategy corresponding to the pure electric mode on its display screen to prompt the tester to drive the vehicle 11 according to the following steps:

[0106] 1. After accelerating the vehicle 11 to ≥ 60 km / h, release the accelerator pedal;

[0107] 2. In response to the vehicle speed decreasing to ≤40 km / h, the brake pedal is depressed to decelerate the vehicle 11 to a stop;

[0108] 3. Shift to R gear, accelerate the vehicle 11 to ≥10 km / h, and then control the vehicle 11 to decelerate to a stop.

[0109] In S304, it is exemplarily explained that according to the vehicle data of the vehicle in each mode, the test results corresponding to the vehicle power system are obtained, including but not limited to:

[0110] Obtain test results in extended range power generation mode, including but not limited to:

[0111] The test device 10 obtains a first engine speed within a first starting vehicle speed range through the OBD port, and determines whether the range extender is started successfully according to the duration for which the first engine speed reaches a first starting speed threshold.

[0112] Among them, the first starting speed range can be that the starting speed is greater than the first starting speed threshold, the first engine speed reaches the first starting speed threshold can be that the first engine speed is greater than the first starting speed threshold, or the first engine speed is less than the second starting speed threshold. The first starting speed threshold can be 35km / h, the first starting speed threshold is within 800-1000rpm (revolutions per minute), the second starting speed threshold can be 100rpm, the duration of the starting speed threshold can be 60s, and the specific values ​​of the first starting speed threshold, the first starting speed threshold, the second starting speed threshold and the duration of the starting speed threshold depend on the circumstances and are not limited here.

[0113] For example, a first engine speed whose starting vehicle speed is greater than a first starting vehicle speed threshold is obtained; if the first engine speed is greater than the first starting speed threshold and reaches the duration of the starting speed threshold, it is determined that the range extender is started successfully; if the first engine speed is less than the second starting speed threshold and reaches the duration of the starting speed threshold, it is determined that the range extender fails to start; and / or,

[0114] The test device 10 obtains the second engine speed within the first shutdown speed range through the OBD port, and determines whether the range extender is successfully shut down according to the duration of time that the second engine speed reaches the shutdown speed threshold.

[0115] Among them, the first shutdown speed range can be the shutdown speed less than the shutdown speed threshold, the second engine speed reaching the shutdown speed threshold can be the second engine speed less than the first shutdown speed threshold, or the second engine speed greater than the second shutdown speed threshold. The shutdown speed threshold can be 15km / h, the first shutdown speed threshold can be 100rpm, the second shutdown speed threshold is within 800-1000rpm, the duration of the shutdown speed threshold can be 60s, and the specific values ​​of the shutdown speed threshold, the first shutdown speed threshold, the second shutdown speed threshold and the duration of the shutdown speed threshold depend on the situation and are not limited here.

[0116] For example, the second engine speed within the shutdown speed threshold is obtained, and if the second engine speed is less than the first shutdown speed threshold and reaches the duration of the shutdown speed threshold, it is determined that the range extender is successfully shut down; if the second engine speed is greater than the second starting speed threshold and reaches the duration of the shutdown speed threshold, it is determined that the range extender fails to shut down; and / or,

[0117] The test equipment 10 obtains the maximum power generation power of the generator 21 within the power generation speed range through the OBD port (for example, by obtaining the current and voltage at the DC end of the generator control device, the power generation power = current * voltage is calculated). If the maximum power generation power is less than the power generation power threshold, it is determined that the extended-range power generation power is insufficient, wherein the power generation speed range may be a power generation speed greater than a target power generation speed threshold, the target power generation speed threshold may be 35 km / h, the power generation power threshold may be 5 kW (kilowatts), and the specific values ​​of the target power generation speed threshold and the power generation power threshold may depend on the circumstances and are not limited here; and / or,

[0118] The test equipment 10 obtains through the OBD port that the engine speed is greater than the target speed threshold and reaches the range extender temperature value within the target duration (for example, the vehicle 11 can obtain the range extender cooling temperature value and the range extender exhaust temperature value through the temperature sensor). If the range extender temperature is not within the temperature range (for example, the range extender cooling temperature value is not within the cooling temperature range, and the range extender exhaust temperature value is not within the exhaust temperature range), it is determined that the range extender temperature is abnormal (for example, the range extender cooling temperature is abnormal, and the range extender exhaust temperature is abnormal), wherein the target speed threshold is within 800-1000rpm, the target duration can be 60s, the cooling temperature range can be (0,130)℃ (Celsius), and the exhaust temperature range can be (0,900)℃. The specific values ​​of the target speed threshold, the first duration, the cooling temperature range, and the exhaust temperature range depend on the situation and are not limited here; and / or,

[0119] The test equipment 10 obtains, through the OBD port, a range extender pressure value when the engine speed is greater than a target speed threshold and reaches a target duration (for example, the vehicle 11 can obtain a range extender intake pressure value through a pressure sensor). If the range extender pressure value is not within the pressure range (for example, the range extender intake pressure value is not within the intake pressure range), it is determined that the range extender pressure is abnormal (for example, the range extender intake pressure is abnormal), wherein the intake pressure range may be (30,90) kPa (kilopascals), and the specific value of the intake pressure range depends on the situation and is not limited here; and / or,

[0120] The test equipment 10 obtains the maximum feedback power of the drive motor 23 within the target deceleration range through the OBD port (for example, by obtaining the current and voltage at the DC terminal of the microcontroller, the feedback power is calculated to be current * voltage, and the feedback power includes coasting feedback power and braking feedback power). If the maximum feedback power is less than the feedback power threshold, the feedback power is determined to be abnormal. Among them, the deceleration range can be that the target vehicle speed is reduced from the first target vehicle speed to the second target vehicle speed, the first target vehicle speed is greater than the second target vehicle speed, the first target vehicle speed can be 60km / h, the second target vehicle speed can be 10km / h, the feedback power threshold can be 50kw, and the specific values ​​of the first target vehicle speed, the second target vehicle speed and the feedback power threshold depend on the situation and are not limited here; and / or,

[0121] The test device 10 obtains the allowable charging power and the allowable discharging power of the battery 24 through the OBD port, as well as the actual charging power of the battery 24 when charging or the actual discharging power when discharging within the target vehicle speed range. If the allowable charging power is less than the actual charging power, it is determined that the battery is abnormally charged, or if the allowable discharging power is less than the actual discharging power, it is determined that the battery is abnormally discharged. The target vehicle speed range may be that after the vehicle 11 accelerates from rest to the first target vehicle speed, it decreases from the first target vehicle speed to the second target vehicle speed; and / or,

[0122] The test device 10 obtains a fault code through the OBD port, and if a fault code exists, it is determined that the vehicle 11 is faulty.

[0123] Through the above method, in the extended-range power generation mode, it is determined based on vehicle data whether the range extender is started and stopped successfully, whether the power generation power is insufficient, whether the temperature and pressure of the range extender meet the temperature threshold and pressure threshold, whether the feedback power meets the feedback power threshold, whether the battery charging and discharging power is abnormal, and whether the vehicle has a fault code. This ensures that the range extender can be reliably started at a critical moment to provide the necessary power support for the vehicle, and can be shut down in time when not needed, thereby avoiding energy waste and improving energy utilization efficiency.

[0124] In one embodiment, in order to enable the tester to obtain the test results in the extended-range power generation mode in a timely manner, so that the tester can quickly identify the cause of the problem and improve the efficiency of troubleshooting, the above test results can also be displayed on the display screen of the test device 10, and the display screen displays different test results according to different conditions. As shown in Table 1:

[0125]

[0126] Table 1 Test results of a range-extended power generation mode

[0127] Obtain test results in extended range direct drive mode, including but not limited to:

[0128] The test device 10 obtains the first clutch state within the engagement speed range through the OBD port, and determines whether the clutch engagement is successful according to the duration of the first clutch state being the engagement state. The engagement speed range may be that the engagement speed is greater than the engagement speed threshold, the engagement speed threshold may be 70 km / h, the engagement state duration may be 10 s, and the specific values ​​of the engagement speed threshold and the engagement state duration may depend on the situation and are not limited here.

[0129] For example, if the vehicle speed is greater than the vehicle speed threshold, the first clutch state is in the engaged state, and the duration of the engaged state is reached, the clutch 23 is engaged successfully, otherwise, the engagement fails; and / or,

[0130] The state of the second clutch within the separation speed range is obtained, and whether the clutch separation is successful is determined according to the state of the second clutch. The separation speed range may be a separation speed less than a separation speed threshold, and the separation speed threshold may be 60 km / h. The specific value depends on the situation and is not limited here.

[0131] For example, if the separation vehicle speed is less than the separation vehicle speed threshold, and the second clutch state is the separation state, the clutch 23 is separated successfully, otherwise, the separation fails; and / or,

[0132] The test equipment 10 obtains through the OBD port the range extender temperature value when the engine speed is greater than the target speed threshold and reaches the target duration (for example, the vehicle 11 can obtain the range extender cooling temperature value and the range extender exhaust temperature value through the temperature sensor). If the range extender temperature is not within the temperature range (for example, the range extender cooling temperature value is not within the cooling temperature range, and the range extender exhaust temperature value is not within the exhaust temperature range), it is determined that the range extender temperature is abnormal (for example, the range extender cooling temperature is abnormal, and the range extender exhaust temperature is abnormal).

[0133] Wherein, the target speed threshold is within the range of 800-1000 rpm, the target duration may be 60 s, the cooling temperature range may be (0, 130)°C, the exhaust temperature range may be (0, 900)°C, and the specific values ​​of the target speed threshold, the first duration, the cooling temperature range, and the exhaust temperature range may depend on the circumstances and are not limited here; and / or,

[0134] The test equipment 10 obtains through the OBD port the range extender pressure value when the engine speed is greater than the target speed threshold and reaches the target duration (for example, the vehicle 11 can obtain the range extender intake pressure value through the pressure sensor). If the range extender pressure value is not within the pressure range (for example, the range extender intake pressure value is not within the intake pressure range), it is determined that the range extender pressure is abnormal (for example, the range extender intake pressure is abnormal).

[0135] The intake pressure range may be (30, 90) kPa, and the specific value of the intake pressure range depends on the situation and is not limited here; and / or,

[0136] The test equipment 10 obtains the maximum feedback power of the drive motor 23 within the target deceleration range through the OBD port (for example, by obtaining the current and voltage at the DC end of the microcontroller, the feedback power = current * voltage is calculated, and the feedback power includes the coasting feedback power and the braking feedback power). If the maximum feedback power is less than the feedback power threshold, it is determined that the feedback power is abnormal.

[0137] Among them, the speed reduction range may be that the target vehicle speed is reduced from the first target vehicle speed to the second target vehicle speed, the first target vehicle speed is greater than the second target vehicle speed, the first target vehicle speed may be 60km / h, the second target vehicle speed may be 10km / h, the feedback power threshold may be 50kw, and the specific values ​​of the first target vehicle speed, the second target vehicle speed and the feedback power threshold may depend on the circumstances and are not limited here; and / or,

[0138] The test device 10 obtains the allowable charging power and the allowable discharging power of the battery 24 through the OBD port, as well as the actual charging power of the battery 24 when charging within the target vehicle speed range, or the actual discharging power when discharging. If the allowable charging power is less than the actual charging power, it is determined that the battery is abnormally charged, or if the allowable discharging power is less than the actual discharging power, it is determined that the battery is abnormally discharged. Among them, the target vehicle speed range can be that after the vehicle 11 accelerates from rest to the first target vehicle speed, it decreases from the first target vehicle speed to the second target vehicle speed.

[0139] Exemplarily, the extended-range direct drive mode requires the SOC value of the vehicle battery 25 to be stabilized within a preset range. When the SOC value exceeds the preset range, the vehicle battery 24 is controlled to discharge; when the SOC value is less than the preset range, the vehicle battery 24 is charged, wherein the preset range depends on the situation and is not limited here; and / or,

[0140] The test device 10 obtains a fault code through the OBD port, and if a fault code exists, it is determined that the vehicle 11 is faulty.

[0141] Through the above method, in the extended-range direct drive mode, it is possible to ensure the normal operation of the extended-range direct drive mode by determining, based on vehicle data, whether the clutch engagement and disengagement are successful, whether the temperatures and pressures of the range extender meet the temperature threshold and pressure threshold, whether the feedback power meets the feedback power threshold, whether the battery charging and discharging power is abnormal, and whether the vehicle has a fault code.

[0142] In one embodiment, in order to enable the tester to obtain the abnormal test results in the extended-range direct drive mode in a timely manner, so that the tester can quickly identify the cause of the problem and improve the efficiency of troubleshooting, the above abnormal test results can also be displayed on the display screen, and the display screen displays different test results according to different conditions. As shown in Table 2:

[0143]

[0144] Table 2 Abnormal test results in an extended range direct drive mode

[0145] Get test results in pure electric mode, including but not limited to:

[0146] Obtaining a third engine speed within the second starting vehicle speed range, and determining whether the range extender is abnormally started according to a duration that the third engine speed reaches a starting speed threshold;

[0147] The test device 10 obtains the third engine speed within the second starting vehicle speed range through the OBD port, and determines whether the range extender is started according to the duration that the third engine speed reaches the third starting speed threshold.

[0148] Among them, the second starting speed range can be that the starting speed is greater than the second starting speed threshold, and the third engine speed reaches the third starting speed threshold can be that the third engine speed is greater than the third starting speed threshold. The second starting speed threshold can be 60km / h, the third starting speed threshold is within 800-1000rpm, the duration of the starting speed threshold can be 60s, and the specific values ​​of the second starting speed threshold, the third starting speed threshold and the duration of the starting speed threshold depend on the situation and are not limited here.

[0149] For example, the starting vehicle speed is greater than the third engine speed within the second starting vehicle speed threshold, and if the third engine speed is greater than the third starting speed threshold and the duration of the starting speed threshold is reached, it is determined that the range extender is abnormally started successfully; and / or,

[0150] Obtaining the vehicle gear signal, and determining whether the gear shift function is abnormal according to the change of the vehicle gear signal. For example, during the driving control process of the pure electric mode, if the change of the vehicle gear signal is not identified, it is determined that the gear shift function is abnormal; and / or,

[0151] The test device 10 obtains the drive system temperature value within the target vehicle speed range through the OBD port (for example, the vehicle 11 can obtain the drive system temperature value through the temperature sensor). If the drive system temperature value is not within the temperature range, it is determined that the drive system temperature is abnormal.

[0152] The target speed range may be a target speed greater than a target speed threshold, the target speed threshold may be 60 km / h, the temperature range may be (0, 130)°C, and the specific values ​​of the target speed threshold and the temperature range may depend on the circumstances and are not limited here; and / or,

[0153] The test equipment 10 obtains the maximum feedback power of the drive motor 23 within the target deceleration range through the OBD port (for example, by obtaining the current and voltage at the DC end of the microcontroller, the feedback power = current * voltage is calculated, and the feedback power includes the coasting feedback power and the braking feedback power). If the maximum feedback power is less than the feedback power threshold, it is determined that the feedback power is abnormal.

[0154] Among them, the speed reduction range may be that the target vehicle speed is reduced from the first target vehicle speed to the second target vehicle speed, the first target vehicle speed is greater than the second target vehicle speed, the first target vehicle speed may be 60km / h, the second target vehicle speed may be 10km / h, the feedback power threshold may be 50kw, and the specific values ​​of the first target vehicle speed, the second target vehicle speed and the feedback power threshold may depend on the circumstances and are not limited here; and / or,

[0155] The test device 10 obtains the allowable charging power and the allowable discharging power of the battery 24 through the OBD port, as well as the actual charging power of the battery 24 when charging or the actual discharging power when discharging within the target vehicle speed range. If the allowable charging power is less than the actual charging power, it is determined that the battery is abnormally charged, or if the allowable discharging power is less than the actual discharging power, it is determined that the battery is abnormally discharged. The target vehicle speed range may be that after the vehicle 11 accelerates from rest to the first target vehicle speed, it decreases from the first target vehicle speed to the second target vehicle speed; and / or,

[0156] The test device 10 obtains a fault code through the OBD port, and if a fault code exists, it is determined that the vehicle 11 is faulty.

[0157] Through the above method, in pure electric mode, whether the range extender is abnormally started is determined based on the duration that the engine speed within the vehicle speed range reaches the speed threshold, so as to ensure that the range extender remains in the off state when it does not need to be started, thereby avoiding unnecessary energy consumption and potential failures; whether the shift function is abnormal is determined based on changes in the vehicle gear signal, so as to ensure safe driving of the vehicle; whether the feedback power meets the feedback power threshold, whether the battery charging and discharging power is abnormal, and whether the vehicle has a fault code is determined based on vehicle data, so as to ensure the normal operation of the pure electric mode.

[0158] In one embodiment, in order to enable the tester to obtain the abnormal test results in pure electric mode in a timely manner, so that the tester can quickly identify the cause of the problem and improve the efficiency of troubleshooting, the above abnormal test results can also be displayed on the display screen, and the display screen displays different test results according to different conditions. As shown in Table 3:

[0159]

[0160]

[0161] Table 3 Abnormal test results in an extended range direct drive mode

[0162] After the above power system test is completed, the test device 10 sends a factory mode shutdown signal to the vehicle 11 through the OBD port, so that the vehicle 11 executes the factory mode shutdown signal and feeds back a factory mode shutdown signal to the test device 10.

[0163] If the test equipment 10 does not receive the signal that the factory mode has been turned off, it will prompt "Vehicle 11 exits factory mode abnormally" through the display screen; if it receives the signal that the factory mode has been turned off, the vehicle data of the vehicle in each mode will be rendered into a test report so that the tester can handle the test abnormalities of the power system according to the test report.

[0164] In the above-mentioned power system testing method, the test execution order corresponding to the extended-range direct drive mode, extended-range power generation mode and pure electric mode in the vehicle power system is determined according to the first state of charge value of the vehicle battery, so as to avoid the inability to perform the test in the extended-range direct drive mode due to insufficient state of charge value, or the inability to perform the test in the range extender charging mode due to excessive state of charge value. Based on the test execution order, the driving control of the vehicle in each mode and the data collection strategy corresponding to each mode are executed to collect the vehicle data of the vehicle in each mode, so as to automatically generate the test results according to the vehicle data of the vehicle in each mode, realize the automatic and comprehensive testing of the power system, and improve the test efficiency.

[0165] It should be understood that although Figure 3 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 3 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0166] In one embodiment, Figure 4 As shown, a power system test device is provided, including: an acquisition module 401, a determination module 402, a test module 403 and a mapping module 404, wherein:

[0167] An acquisition module 401 is used to acquire a first state of charge value of a vehicle battery;

[0168] A determination module 402 is used to determine the test execution order corresponding to the extended-range direct drive mode, the extended-range power generation mode and the pure electric mode in the vehicle power system according to the threshold comparison of the first state of charge value;

[0169] The test module 403 is used to execute driving control of the vehicle in each mode according to the test execution sequence, and obtain vehicle data of the vehicle in each mode according to the data collection strategy corresponding to each mode;

[0170] The mapping module 404 is used to obtain the test results corresponding to the vehicle power system according to the vehicle data in each mode.

[0171] In one embodiment, the determination module 402 is further configured to:

[0172] When the first state of charge value is greater than a preset threshold, determining the test execution order as the extended-range direct drive mode, the pure electric mode, and the extended-range power generation mode;

[0173] When the first state of charge value is less than or equal to the preset threshold value, the test execution order is indeed the extended-range power generation mode, the extended-range direct drive mode, and the pure electric mode.

[0174] In one embodiment, the testing module 403 is further configured to:

[0175] When the first state of charge value is greater than a preset threshold, the vehicle mode is controlled to switch to the extended-range direct drive mode, and driving control of the vehicle in the extended-range direct drive mode is executed according to a driving strategy corresponding to the extended-range direct drive mode;

[0176] In response to the driving control in the extended-range direct-drive mode being completed, controlling the vehicle mode to switch to the pure electric mode, and executing the driving control of the vehicle in the pure electric mode according to the driving strategy corresponding to the pure electric mode;

[0177] In response to the driving control in the pure electric mode being executed, obtaining a second state of charge value of the vehicle battery;

[0178] When the second state of charge value is greater than a preset threshold, controlling the vehicle battery to discharge;

[0179] When the second state of charge value is less than or equal to the preset threshold, the vehicle mode is controlled to switch to the extended-range power generation mode, and driving control of the vehicle in the extended-range power generation mode is executed according to the driving strategy corresponding to the extended-range power generation mode.

[0180] In one embodiment, the mapping module 404 is further configured to:

[0181] Obtain test results in extended range power generation mode, including:

[0182] Obtaining a first engine speed within a first starting vehicle speed range, and determining whether the range extender is successfully started based on the duration that the first engine speed reaches a starting speed threshold; and / or,

[0183] A second engine speed within the shutdown vehicle speed range is obtained, and whether the range extender is successfully shut down is determined based on the duration that the second engine speed reaches the shutdown speed threshold.

[0184] In one embodiment, the mapping module 404 is further configured to:

[0185] Obtain test results in extended-range direct drive mode, including:

[0186] Acquiring a first clutch state within the vehicle speed range, and determining whether the clutch engagement is successful based on the duration of the first clutch state being in the engaged state; and / or,

[0187] The state of the second clutch within the disengagement vehicle speed range is acquired, and whether the clutch disengagement is successful is determined according to the state of the second clutch.

[0188] In one embodiment, the mapping module 404 is further configured to:

[0189] Get test results in pure electric mode, including:

[0190] Obtaining a third engine speed within the second starting vehicle speed range, and determining whether the range extender is abnormally started according to the duration for which the third engine speed reaches the starting speed threshold; and / or,

[0191] Obtain the vehicle gear position signal, and determine whether the gear shift function is abnormal based on changes in the vehicle gear position signal.

[0192] In one embodiment, the mapping module 404 is further configured to:

[0193] The test results are displayed on the display screen, and the vehicle data in each mode is rendered into a test report.

[0194] For the specific definition of the power system test device, please refer to the definition of the power system test method above, which will not be repeated here. Each module in the above-mentioned power system test device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0195] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 5 As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store power system test data. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, the above-mentioned power system test method is implemented.

[0196] Those skilled in the art will understand that Figure 5 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0197] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0198] Obtaining a first state of charge value of a vehicle battery;

[0199] Determine, based on a comparison of the threshold value of the first state of charge value, a test execution order corresponding to the extended-range direct drive mode, the extended-range power generation mode, and the pure electric mode in the vehicle power system;

[0200] According to the test execution sequence, the driving control of the vehicle in each mode is executed, and the vehicle data of the vehicle in each mode is obtained according to the data collection strategy corresponding to each mode;

[0201] According to the vehicle data in each mode, the test results corresponding to the vehicle power system are obtained.

[0202] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0203] When the first state of charge value is greater than a preset threshold, determining the test execution order as the extended-range direct drive mode, the pure electric mode, and the extended-range power generation mode;

[0204] When the first state of charge value is less than or equal to the preset threshold value, the test execution order is indeed the extended-range power generation mode, the extended-range direct drive mode, and the pure electric mode.

[0205] In one embodiment, when the processor executes the computer program, the following steps are also implemented:

[0206] When the first state of charge value is greater than a preset threshold, the vehicle mode is controlled to switch to the extended-range direct drive mode, and driving control of the vehicle in the extended-range direct drive mode is executed according to a driving strategy corresponding to the extended-range direct drive mode;

[0207] In response to the driving control in the extended-range direct-drive mode being completed, controlling the vehicle mode to switch to the pure electric mode, and executing the driving control of the vehicle in the pure electric mode according to the driving strategy corresponding to the pure electric mode;

[0208] In response to the driving control in the pure electric mode being executed, obtaining a second state of charge value of the vehicle battery;

[0209] When the second state of charge value is greater than a preset threshold, controlling the vehicle battery to discharge;

[0210] When the second state of charge value is less than or equal to the preset threshold, the vehicle mode is controlled to switch to the extended-range power generation mode, and driving control of the vehicle in the extended-range power generation mode is executed according to the driving strategy corresponding to the extended-range power generation mode.

[0211] In one embodiment, when the processor executes the computer program, the following steps are also implemented:

[0212] Obtain test results in extended range power generation mode, including:

[0213] Obtaining a first engine speed within a first starting vehicle speed range, and determining whether the range extender is successfully started based on the duration that the first engine speed reaches a starting speed threshold; and / or,

[0214] A second engine speed within the shutdown vehicle speed range is obtained, and whether the range extender is successfully shut down is determined based on the duration that the second engine speed reaches the shutdown speed threshold.

[0215] In one embodiment, when the processor executes the computer program, the following steps are also implemented:

[0216] Obtain test results in extended-range direct drive mode, including:

[0217] Acquiring a first clutch state within the vehicle speed range, and determining whether the clutch engagement is successful based on the duration of the first clutch state being in the engaged state; and / or,

[0218] The state of the second clutch within the disengagement vehicle speed range is acquired, and whether the clutch disengagement is successful is determined according to the state of the second clutch.

[0219] In one embodiment, when the processor executes the computer program, the following steps are also implemented:

[0220] Get test results in pure electric mode, including:

[0221] Obtaining a third engine speed within the second starting vehicle speed range, and determining whether the range extender is abnormally started according to the duration for which the third engine speed reaches the starting speed threshold; and / or,

[0222] Obtain the vehicle gear position signal, and determine whether the gear shift function is abnormal based on changes in the vehicle gear position signal.

[0223] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0224] The test results are displayed on the display screen, and the vehicle data in each mode is rendered into a test report.

[0225] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0226] Obtaining a first state of charge value of a vehicle battery;

[0227] Determine, based on a comparison of the threshold value of the first state of charge value, a test execution order corresponding to the extended-range direct drive mode, the extended-range power generation mode, and the pure electric mode in the vehicle power system;

[0228] According to the test execution sequence, the driving control of the vehicle in each mode is executed, and the vehicle data of the vehicle in each mode is obtained according to the data collection strategy corresponding to each mode;

[0229] According to the vehicle data in each mode, the test results corresponding to the vehicle power system are obtained.

[0230] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0231] When the first state of charge value is greater than a preset threshold, determining the test execution order as the extended-range direct drive mode, the pure electric mode, and the extended-range power generation mode;

[0232] When the first state of charge value is less than or equal to the preset threshold value, the test execution order is indeed the extended-range power generation mode, the extended-range direct drive mode, and the pure electric mode.

[0233] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0234] When the first state of charge value is greater than a preset threshold, the vehicle mode is controlled to switch to the extended-range direct drive mode, and driving control of the vehicle in the extended-range direct drive mode is executed according to a driving strategy corresponding to the extended-range direct drive mode;

[0235] In response to the driving control in the extended-range direct-drive mode being completed, controlling the vehicle mode to switch to the pure electric mode, and executing the driving control of the vehicle in the pure electric mode according to the driving strategy corresponding to the pure electric mode;

[0236] In response to the driving control in the pure electric mode being executed, obtaining a second state of charge value of the vehicle battery;

[0237] When the second state of charge value is greater than a preset threshold, controlling the vehicle battery to discharge;

[0238] When the second state of charge value is less than or equal to the preset threshold, the vehicle mode is controlled to switch to the extended-range power generation mode, and driving control of the vehicle in the extended-range power generation mode is executed according to the driving strategy corresponding to the extended-range power generation mode.

[0239] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0240] Obtain test results in extended range power generation mode, including:

[0241] Obtaining a first engine speed within a first starting vehicle speed range, and determining whether the range extender is successfully started based on the duration that the first engine speed reaches a starting speed threshold; and / or,

[0242] A second engine speed within the shutdown vehicle speed range is obtained, and whether the range extender is successfully shut down is determined based on the duration that the second engine speed reaches the shutdown speed threshold.

[0243] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0244] Obtain test results in extended-range direct drive mode, including:

[0245] Acquiring a first clutch state within the vehicle speed range, and determining whether the clutch engagement is successful based on the duration of the first clutch state being in the engaged state; and / or,

[0246] The state of the second clutch within the disengagement vehicle speed range is acquired, and whether the clutch disengagement is successful is determined according to the state of the second clutch.

[0247] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0248] Get test results in pure electric mode, including:

[0249] Obtaining a third engine speed within the second starting vehicle speed range, and determining whether the range extender is abnormally started according to the duration for which the third engine speed reaches the starting speed threshold; and / or,

[0250] Obtain the vehicle gear position signal, and determine whether the gear shift function is abnormal based on changes in the vehicle gear position signal.

[0251] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0252] The test results are displayed on the display screen, and the vehicle data in each mode is rendered into a test report.

[0253] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing related hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct RAMbus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0254] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0255] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A power system testing method, characterized in that: The method comprises: Obtaining a first state of charge value of a vehicle battery; Determining the test execution order corresponding to the extended-range direct drive mode, the extended-range power generation mode and the pure electric mode in the vehicle power system according to the threshold comparison of the first state of charge value; Executing driving control of the vehicle in each mode according to the test execution sequence, and acquiring vehicle data of the vehicle in each mode according to a data collection strategy corresponding to each mode; According to the vehicle data of the vehicle in each mode, the test results corresponding to the vehicle power system are obtained.

2. The method according to claim 1, characterized in that The determining, based on the threshold comparison of the first state of charge value, the test execution order corresponding to the extended-range direct drive mode, the extended-range power generation mode and the pure electric mode in the vehicle power system includes: When the first state of charge value is greater than a preset threshold, determining the test execution order to be the extended-range direct drive mode, the pure electric mode, and the extended-range power generation mode; When the first state of charge value is less than or equal to the preset threshold value, the test execution order is indeed the extended-range power generation mode, the extended-range direct drive mode, and the pure electric mode.

3. The method according to claim 2, characterized in that The step of executing driving control of the vehicle in each mode according to the test execution sequence includes: When the first state of charge value is greater than the preset threshold, controlling the vehicle mode to switch to the extended-range direct drive mode, and executing driving control of the vehicle in the extended-range direct drive mode according to the driving strategy corresponding to the extended-range direct drive mode; In response to the driving control in the extended-range direct-drive mode being completed, controlling the vehicle mode to switch to the pure electric mode, and executing the driving control of the vehicle in the pure electric mode according to the driving strategy corresponding to the pure electric mode; In response to the driving control in the pure electric mode being executed, obtaining a second state of charge value of a vehicle battery; When the second state of charge value is greater than the preset threshold, controlling the vehicle battery to discharge; When the second state of charge value is less than or equal to the preset threshold, the vehicle mode is controlled to switch to the extended-range power generation mode, and driving control of the vehicle in the extended-range power generation mode is performed according to a driving strategy corresponding to the extended-range power generation mode.

4. The method according to claim 1, characterized in that: The obtaining, according to the vehicle data of the vehicle in each mode, a test result corresponding to the vehicle power system includes: The test results in the extended range power generation mode are obtained, including: Obtaining a first engine speed within a first starting vehicle speed range, and determining whether the range extender is successfully started based on the duration that the first engine speed reaches a starting speed threshold; and / or, A second engine speed within the shutdown vehicle speed range is obtained, and whether the range extender is successfully shut down is determined based on the duration for which the second engine speed reaches the shutdown speed threshold.

5. The method according to claim 4, characterized in that The obtaining, according to the vehicle data of the vehicle in each mode, a test result corresponding to the vehicle power system, further comprises: The test results in the extended-range direct drive mode are obtained, including: Acquiring a first clutch state within the vehicle speed range, and determining whether the clutch engagement is successful based on the duration of the first clutch state being in the engagement state; and / or, A second clutch state within a disengagement vehicle speed range is acquired, and whether the clutch disengagement is successful is determined based on the second clutch state.

6. The method according to claim 5, characterized in that The obtaining, according to the vehicle data of the vehicle in each mode, a test result corresponding to the vehicle power system, further comprises: The test results in the pure electric mode are obtained, including: Acquiring a third engine speed within the second starting vehicle speed range, and determining whether the range extender is abnormally started according to the duration for which the third engine speed reaches the starting speed threshold; and / or, A vehicle gear position signal is acquired, and whether a gear shift function is abnormal is determined according to a change of the vehicle gear position signal.

7. The method according to claim 1, characterized in that After obtaining the test results corresponding to the vehicle power system according to the vehicle data in each mode, the method further includes: The test results are displayed on a display screen, and the vehicle data of the vehicle in each mode is rendered into a test report.

8. A power system testing device, characterized in that: The device comprises: An acquisition module, used to acquire a first state of charge value of a vehicle battery; A determination module, configured to determine, based on a threshold comparison of the first state of charge value, a test execution order corresponding to an extended-range direct drive mode, an extended-range power generation mode, and a pure electric mode in a vehicle power system; A test module, used to execute driving control of the vehicle in each mode according to the test execution sequence, and obtain vehicle data of the vehicle in each mode according to the data collection strategy corresponding to each mode; A mapping module is used to obtain test results corresponding to the vehicle power system according to the vehicle data in each mode.

9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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