Vehicle testing method and device, vehicle and computer readable storage medium

Abstract

The invention provides a vehicle testing method and device, a vehicle and a computer readable storage medium, the vehicle testing method is applied to an electric vehicle or a hybrid vehicle, and the vehicle testing method comprises the steps that a dynamometer mode is set for the vehicle, and a mode switch of the dynamometer mode is triggered; and under the condition that the vehicle is started and the starting condition of the dynamometer mode is met, the dynamometer mode is started, namely, the energy recovery function of the vehicle is started, and a vehicle body electronic stabilization system and an anti-lock braking system of the vehicle are closed so as to carry out target testing on the vehicle. When the vehicle performance test is carried out, extra equipment does not need to be operated, the test process is simplified, and the hardware cost and the labor cost are saved. Moreover, in the dynamometer mode, the energy recovery function is started, and the vehicle body electronic stabilization system and the anti-lock braking system of the vehicle are closed, so that the energy consumption and the endurance mileage of the vehicle can be accurately measured.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and more specifically, to a vehicle testing method, device, vehicle and computer-readable storage medium in the field of vehicle control technology. Background Art

[0002] As an important means of evaluating vehicle performance, the range test is of great significance to the research and development, sales and daily use of electric vehicles by consumers.

[0003] Currently, before conducting a vehicle's range test, two testers are required to operate two computers and two independent diagnostic equipment to send diagnostic commands to the vehicle's electronic stability system and integrated brake control system to control the vehicle to perform a range test on a dynamometer. The testing process is relatively complicated and the cost is high. Summary of the invention

[0004] The present application provides a vehicle testing method, device, vehicle and computer-readable storage medium. When the present application performs a performance test on a vehicle, no additional equipment needs to be run, the testing process is simplified, and hardware and labor costs are saved. In addition, since the energy recovery function is turned on in the dynamometer mode, and the vehicle's body electronic stability system and anti-lock braking system are turned off, the vehicle's energy consumption and cruising range can be accurately measured.

[0005] In a first aspect, a vehicle testing method is provided, which is applied to a vehicle, wherein the vehicle is an electric vehicle or a hybrid vehicle, and the vehicle has a dynamometer mode. When the dynamometer mode is turned on, the energy recovery function of the vehicle is turned on, and the body electronic stability system and anti-lock braking system of the vehicle are turned off; the vehicle testing method includes: when a mode switch of the dynamometer mode is triggered, determining whether the start-up conditions of the dynamometer mode are met; when the start-up conditions are met, turning on the dynamometer mode to perform a target test on the vehicle.

[0006] Through the above technical solution, the present application sets a dynamometer mode for the vehicle, and when the mode switch of the dynamometer mode is triggered and the conditions for starting the dynamometer mode are met, the dynamometer mode is turned on, that is, the energy recovery function of the vehicle is turned on, and the vehicle's body electronic stability system and anti-lock braking system are turned off to perform a target test on the vehicle. The present application sets a dynamometer mode for the vehicle, and when the mode switch of the dynamometer mode is triggered and the conditions for starting the dynamometer mode are met, the dynamometer mode is turned on to perform a target test on the vehicle. During the test, there is no need to run additional equipment, which simplifies the test process and saves hardware and labor costs. In addition, since the energy recovery function is turned on and the vehicle's body electronic stability system and anti-lock braking system are turned off in the dynamometer mode, the energy consumption and cruising range of the vehicle can be accurately measured.

[0007] In combination with the first aspect, in some possible implementations, the target test is a test of the vehicle based on a dynamometer; judging whether the conditions for starting the dynamometer mode are met include: if it is detected that the vehicle is placed on the dynamometer, the vehicle is powered on, the vehicle is stationary, the pedal travel of the brake pedal is greater than the preset travel, the current gear is the parking gear, and the number of times the start-stop switch is triggered within the preset time is greater than or equal to the preset number, then it is determined that the conditions for starting the dynamometer mode are met. Based on the above technical solution, by setting the above start conditions, it can be ensured that the dynamometer mode is only started in a safe and appropriate driving environment, avoiding the safety hazard caused by the accidental activation of the dynamometer mode when the driver accidentally touches it while driving.

[0008] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the test of the vehicle based on the dynamometer includes a cruising range test, and turning on the dynamometer mode to perform a target test on the vehicle includes: turning on the dynamometer mode, adjusting the gear and / or speed of the vehicle so that the vehicle can perform a cruising range test on the dynamometer.

[0009] In combination with the first aspect and the above-mentioned implementation, in some possible implementations, adjusting the gear and / or speed of the vehicle includes: obtaining the target gear output by the dynamometer; wherein the target gear is not the parking gear and the neutral gear; switching the current gear of the vehicle to the target gear; and / or, obtaining the target speed output by the dynamometer; adjusting the current speed of the vehicle to the target speed. Based on the above technical solution, adjusting the gear and speed according to the instructions of the dynamometer can reduce errors caused by human operation and improve the reliability of test data. In addition, the dynamometer can set different target gears and target speeds to simulate driving scenarios under various working conditions, which is helpful for comprehensively evaluating vehicle performance.

[0010] In combination with the first aspect and the above implementation, in some possible implementations, the method further includes: when the dynamometer mode is turned on, outputting prompt information; wherein the prompt information includes information that the vehicle is undergoing a cruising range test, information that the energy recovery function is turned on, and information that the body electronic stability system and the anti-lock braking system are turned off; when the vehicle completes the cruising range test, stop outputting the prompt information and turn on the body electronic stability system and the anti-lock braking system. Based on the above technical solution, after the vehicle completes the cruising range test, the body electronic stability system and the anti-lock braking system are turned on, so that the body electronic stability system and the anti-lock braking system of the vehicle can work normally in the actual driving scene, thereby ensuring the driving stability of the vehicle, improving driving safety, and reducing the risk of accidents.

[0011] In combination with the first aspect and the above implementation, in some possible implementations, during a vehicle range test, if a parking gear switching instruction is received, the vehicle is prohibited from switching from the current gear to the parking gear; and the current gear of the vehicle is kept unchanged, or the current gear of the vehicle is switched to neutral. Based on the above technical solution, during a vehicle range test, if a parking gear switching instruction is received, measures are taken to keep the gear unchanged or switch to neutral, which can prevent the wheels from suddenly locking after the vehicle enters the parking gear, causing the rotating dynamometer hub to impact the wheel motor and damage the motor.

[0012] In combination with the first aspect and the above implementation, in some possible implementations, when the vehicle completes the cruising range test, if a parking gear switching instruction is received, the vehicle is allowed to switch from the current gear to the parking gear. Based on the above technical solution, after the vehicle completes the cruising range test, the vehicle control system can be restored to the normal operation mode, so that after receiving the parking gear switching instruction, the vehicle is allowed to switch to the parking gear, which is convenient for the driver to park the vehicle safely and stably, thereby enhancing parking safety.

[0013] In a second aspect, a vehicle testing device is provided, which is configured on a vehicle, the vehicle being an electric vehicle or a hybrid vehicle, and the vehicle having a dynamometer mode. When the dynamometer mode is turned on, the energy recovery function of the vehicle is turned on, and the vehicle's body electronic stability system and anti-lock braking system are turned off; the vehicle testing device comprises:

[0014] A first control module, used for determining whether a start condition of the dynamometer mode is met when a mode switch of the dynamometer mode is triggered;

[0015] The second control module is used to start the dynamometer mode when the start condition is met to perform a target test on the vehicle.

[0016] In conjunction with the second aspect, in some possible implementations, the target test is a test performed on the vehicle based on a dynamometer; and the first control module is specifically configured to:

[0017] If it is detected that the vehicle is placed on the dynamometer, the vehicle is powered on, the vehicle is stationary, the pedal travel of the brake pedal is greater than the preset travel, the current gear is the parking gear, and the number of times the start-stop switch is triggered within the preset time is greater than or equal to the preset number of times, then it is determined that the conditions for starting the dynamometer mode are met.

[0018] In combination with the second aspect and the above implementation, in some possible implementations, the test of the vehicle based on the dynamometer includes a cruising range test, and the above second control module is specifically used to:

[0019] Turn on the dynamometer mode and adjust the vehicle's gear and / or speed to allow the vehicle to perform a range test on the dynamometer.

[0020] In combination with the second aspect and the above implementation, in some possible implementations, the second control module is specifically used to:

[0021] Obtaining a target gear position output by a dynamometer; wherein the target gear position is not a parking gear position and a neutral gear;

[0022] Switch the current gear of the vehicle to the target gear;

[0023] and / or,

[0024] Obtain the target vehicle speed output by the dynamometer;

[0025] Adjust the vehicle's current speed to the target speed.

[0026] In combination with the second aspect and the above implementations, in some possible implementations, the vehicle testing device further includes:

[0027] The output module is used to output prompt information when the dynamometer mode is turned on; the prompt information includes information that the vehicle is undergoing a cruising range test, information that the energy recovery function is turned on, and information that the body electronic stability system and the anti-lock braking system are turned off; and when the vehicle completes the cruising range test, stop outputting the prompt information and turn on the body electronic stability system and the anti-lock braking system.

[0028] In combination with the second aspect and the foregoing implementations, in some possible implementations, the second control module is further configured to:

[0029] During the vehicle range test, if a parking gear shift instruction is received, the vehicle is prohibited from shifting from the current gear to the parking gear; and,

[0030] Maintain the vehicle's current gear position, or shift the vehicle's current gear position to neutral.

[0031] In combination with the second aspect and the foregoing implementations, in some possible implementations, the second control module is further configured to:

[0032] When the vehicle completes the range test, if a parking gear shift command is received, the vehicle is allowed to shift from the current gear to the parking gear.

[0033] In a third aspect, a vehicle is provided, comprising: a memory for storing executable program code; and a processor for calling and running the executable program code from the memory, so that the computer executes the vehicle testing method in the above-mentioned first aspect or any possible implementation of the first aspect.

[0034] In a fourth aspect, a computer program product is provided, which includes: a computer program code, which, when executed on a computer, enables the computer to execute the vehicle testing method in the first aspect or any possible implementation of the first aspect.

[0035] In a fifth aspect, a computer-readable storage medium is provided, which stores a computer program code. When the computer program code runs on a computer, the computer executes the vehicle testing method in the above-mentioned first aspect or any possible implementation of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic flow chart of a vehicle testing method provided in an embodiment of the present application is shown;

[0037] Figure 2 A schematic diagram of a feedback torque provided in an embodiment of the present application is shown;

[0038] Figure 3 A schematic flow chart of another vehicle testing method provided in an embodiment of the present application is shown;

[0039] Figure 4 A schematic structural diagram of a vehicle testing device provided in an embodiment of the present application is shown;

[0040] Figure 5 A schematic structural diagram of a vehicle provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0041] The technical solution in the present application will be described clearly and in detail below in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0042] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0043] As an important means of evaluating vehicle performance, the range test is of great significance to the research and development, sales and daily use of electric vehicles by consumers.

[0044] Currently, before conducting a vehicle's range test, two testers are required to operate two computers and two independent diagnostic equipment to send diagnostic commands to the vehicle's electronic stability system and integrated brake control system to control the vehicle to perform a range test on a dynamometer. The testing process is relatively complicated and the cost is high.

[0045] Based on the problems existing in the above-mentioned related technologies, the embodiments of the present application provide a vehicle testing method, device, vehicle and computer-readable storage medium. The present application sets a dynamometer mode for the vehicle, and turns on the dynamometer mode when the mode switch of the dynamometer mode is triggered and the conditions for turning on the dynamometer mode are met, so as to perform a target test on the vehicle. During the test, there is no need to run additional equipment, which simplifies the test process and saves hardware and labor costs. In addition, since the energy recovery function is turned on in the dynamometer mode, and the vehicle's body electronic stability system and anti-lock braking system are turned off, the vehicle's energy consumption and cruising range can be accurately measured.

[0046] The following is an embodiment of a vehicle testing method provided in an embodiment of the present application.

[0047] Figure 1 A schematic flow chart of a vehicle testing method provided in an embodiment of the present application is shown. The vehicle testing method provided in an embodiment of the present application is applied to an electric vehicle or a hybrid vehicle. The vehicle has a dynamometer mode. When the dynamometer mode is turned on, the vehicle's energy recovery function is turned on, and the vehicle's body electronic stability system and anti-lock braking system are turned off.

[0048] A vehicle testing method provided in an embodiment of the present application is applied to a scenario where a vehicle is tested for performance on a two-wheel drive hub. It should be understood that electric vehicles and hybrid vehicles recover kinetic energy and convert it into electrical energy through a regenerative braking system during braking. This process not only helps to extend the vehicle's cruising range, but also improves overall energy efficiency. However, the body electronic stability system will actively apply braking force to the wheels or adjust the engine torque according to the vehicle's posture and the driver's intention during the vehicle's driving process. This process will consume additional electrical energy, resulting in inaccurate test results when the vehicle is tested for cruising range on a dynamometer. Therefore, when the vehicle is tested for performance, the vehicle's body electronic stability system needs to be turned off. In addition, when the vehicle is tested for performance on a two-wheel drive hub, the wheels are very likely to slip, and the anti-lock braking system will prevent the vehicle's tires from slipping by applying braking pressure. The braking force will consume the vehicle's kinetic energy and affect the energy recovery capability. Therefore, when the vehicle is tested for performance on a two-wheel drive hub dynamometer, the vehicle's body electronic stability system and anti-lock braking system need to be turned off.

[0049] like Figure 1 As shown, the above vehicle testing method includes the following schemes:

[0050] S110: When the mode switch of the dynamometer mode is triggered, determining whether a start condition of the dynamometer mode is met.

[0051] S120: When the start condition is met, start the dynamometer mode to perform a target test on the vehicle.

[0052] It should be understood that, at present, when conducting a vehicle's range test, two testers are required to operate two computers and two independent diagnostic equipment to send diagnostic commands to the vehicle's body electronic stability system and integrated brake control system to control the vehicle to perform a range test on a dynamometer. This operation is not only cumbersome, but also has a low success rate due to the complexity of the steps. Therefore, the present application simplifies the process of performing a performance test on a vehicle on a dynamometer by setting a dynamometer mode for the vehicle, and turning on the dynamometer mode when the mode switch of the dynamometer mode is triggered and the conditions for turning on the dynamometer mode are met to perform a performance test on the vehicle.

[0053] In a possible implementation, the target test is a test of the vehicle based on a dynamometer; the above-mentioned determination of whether the conditions for starting the dynamometer mode are met include:

[0054] If it is detected that the vehicle is placed on the dynamometer, the vehicle is powered on, the vehicle is stationary, the pedal travel of the brake pedal is greater than the preset travel, the current gear is the parking gear, and the number of times the start-stop switch is triggered within the preset time is greater than or equal to the preset number of times, then it is determined that the conditions for starting the dynamometer mode are met.

[0055] Among them, limiting the number of times the start-stop switch is triggered within a preset time period can prevent the dynamometer mode from being turned on when it is not necessary due to the driver's accidental touch, causing inconvenience to the driver.

[0056] Based on the above technical solution, by setting the above activation conditions, it can be ensured that the dynamometer mode is only started in a safe and appropriate driving environment, avoiding the safety hazard caused by accidental activation of the dynamometer mode when the driver accidentally touches it while driving.

[0057] Through the above technical solution, the present application sets a dynamometer mode for the vehicle, and when the mode switch of the dynamometer mode is triggered and the conditions for starting the dynamometer mode are met, the dynamometer mode is turned on, that is, the energy recovery function of the vehicle is turned on, and the vehicle's body electronic stability system and anti-lock braking system are turned off to perform a target test on the vehicle. The present application sets a dynamometer mode for the vehicle, and when the mode switch of the dynamometer mode is triggered and the conditions for starting the dynamometer mode are met, the dynamometer mode is turned on to perform a target test on the vehicle. During the test, there is no need to run additional equipment, which simplifies the test process and saves hardware and labor costs. In addition, since the energy recovery function is turned on and the vehicle's body electronic stability system and anti-lock braking system are turned off in the dynamometer mode, the energy consumption and cruising range of the vehicle can be accurately measured.

[0058] In a possible implementation, the test of the vehicle based on the dynamometer includes a cruising range test, and the above-mentioned starting the dynamometer mode to perform a target test on the vehicle includes:

[0059] Turn on the dynamometer mode and adjust the vehicle's gear and / or speed to allow the vehicle to perform a range test on the dynamometer.

[0060] For example, during a vehicle range test on a dynamometer, the dynamometer can simulate driving scenarios under different operating conditions. The driver or the autonomous driving robot needs to adjust the speed and gear of the test vehicle according to different operating conditions to conduct the range test.

[0061] In a possible implementation, the above-mentioned adjustment of the gear position and / or speed of the vehicle includes:

[0062] Get the target gear position output by the dynamometer;

[0063] Switch the current gear of the vehicle to the target gear;

[0064] and / or,

[0065] Obtain the target vehicle speed output by the dynamometer; and adjust the current vehicle speed to the target vehicle speed.

[0066] For example, during a vehicle range test on a dynamometer, the dynamometer can display the target gear and / or target speed of the vehicle under the target condition on a display screen according to different working conditions, and the driver needs to adjust the gear of the vehicle according to the target gear prompted by the display screen. Among them, the target gear is not a parking gear and a neutral gear. And / or, the speed of the vehicle is adjusted according to the target speed prompted by the display screen. Moreover, the target speed can be a speed range. While the vehicle is driving under the target condition, it is necessary to drive according to the target speed, that is, to control the speed within the speed range.

[0067] Based on the above technical solution, adjusting the gear and speed according to the dynamometer's instructions can reduce errors caused by human operation and improve the reliability of test data. In addition, the dynamometer can set different target gears and target speeds to simulate driving scenarios under various working conditions, which helps to comprehensively evaluate vehicle performance.

[0068] In a possible implementation, the vehicle testing method further includes:

[0069] When the dynamometer mode is turned on, the prompt information is output;

[0070] When the vehicle completes the range test, stop outputting prompt information and turn on the electronic stability system and anti-lock braking system.

[0071] The prompt information includes information that the vehicle is undergoing a range test, information that the energy recovery function is turned on, and information that the vehicle electronic stability system and anti-lock braking system are turned off. The prompt information includes display prompts and / or sound prompts.

[0072] Exemplarily, after the dynamometer mode of the vehicle is turned on, the vehicle outputs a prompt message to prompt the tester that the dynamometer mode of the vehicle has been activated, that is, the energy recovery function of the vehicle has been turned on, and the body electronic stability system and the anti-lock braking system have been turned off, and the vehicle can be tested for a range. In addition, the vehicle can continuously output prompt messages during the range test to prompt the tester that the vehicle is undergoing a range test. Exemplarily, the prompt message can be output in the form of a signal light or in the form of a voice broadcast. For example, after the dynamometer mode of the vehicle is turned on, the vehicle lights up the body electronic stability system fault light and the anti-lock braking system fault light in the instrument panel to prompt the tester that the body electronic stability system and the anti-lock braking system have been turned off; and emits a "beep beep" beep to prompt the tester that the dynamometer mode has been turned on and the vehicle can be tested for a range.

[0073] Exemplarily, after the vehicle ends the cruising range test, the dynamometer mode of the vehicle is turned off, and the functions of the electronic stability system and the anti-lock braking system are restored, so that the electronic stability system can continue to monitor the vehicle status and actively intervene during the driving process of the vehicle, such as applying brakes, adjusting torque output and other measures; and the anti-lock braking system can prevent the wheels from locking during emergency braking to ensure the driving stability of the vehicle. At the same time, the vehicle stops outputting prompt information. For example, when the vehicle receives a power-off command or a charging command, it is considered that the vehicle ends the cruising range test, the dynamometer mode of the vehicle is turned off, and the functions of the electronic stability system and the anti-lock braking system are restored. At the same time, the vehicle turns off the electronic stability system fault light and the anti-lock braking system fault light in the instrument panel, and turns off the "beep beep" beep to remind the tester that the dynamometer mode of the vehicle is turned off, and the electronic stability system and the anti-lock braking system are turned on.

[0074] Based on the above technical solution, after the vehicle completes the cruising range test, the electronic stability system and the anti-lock braking system are turned on, so that the electronic stability system and the anti-lock braking system of the vehicle can work normally in the actual driving scenario, thereby ensuring the driving stability of the vehicle, improving driving safety, and reducing the risk of accidents.

[0075] In one possible implementation, during a vehicle range test, if a parking gear switch command is received, the vehicle is prohibited from switching from the current gear to the parking gear; and the current gear of the vehicle is maintained unchanged, or the current gear of the vehicle is switched to neutral.

[0076] It should be understood that the vehicle has an automatic shift to parking gear function. When the conditions for automatic shift to parking gear are met, the gear control module of the vehicle will receive the parking gear switching instruction and switch the gear to the parking gear. For example, after the vehicle stops, when the driver unfastens the seat belt or opens the door, the vehicle will trigger the automatic shift to parking gear function to increase the convenience and safety of the vehicle.

[0077] However, when the vehicle is tested for cruising range on the dynamometer, the vehicle is placed on the dynamometer, and the wheels of the vehicle are in contact with the rotating hub of the dynamometer. During the cruising range test, the vehicle body does not move, and the rotation of the wheels drives the rotating hub to rotate. Therefore, during the cruising range test, if the gear of the vehicle is suddenly switched to the parking gear, the wheel will be locked immediately due to the braking force, and the rotating hub will continue to rotate under the action of inertia, which will cause an impact on the drive motor of the driving wheel and damage the motor. Therefore, in order to avoid the vehicle triggering the automatic switching to the parking gear function during the cruising range test, causing the motor of the wheel to be damaged. After receiving the switching instruction of the parking gear, the gear control module does not respond to the switching instruction of the parking gear and keeps the current gear unchanged; or, in response to the switching instruction of the parking gear, switches the current gear of the vehicle to neutral. It should be understood that after the current gear of the vehicle is switched to neutral, the wheel loses power, but the wheel and the rotating hub are still rotating synchronously under the action of inertia. Therefore, the rotating hub will not cause an impact on the motor of the wheel and damage the motor.

[0078] Based on the above technical solution, during the vehicle's range test, if a parking gear switching command is received, measures are taken to keep the gear unchanged or switch to neutral. This can prevent the wheels from suddenly locking after the vehicle enters the parking gear, causing the still rotating dynamometer hub to impact the wheel motor and damage the motor.

[0079] In one possible implementation, when the vehicle completes the cruising range test, if a parking gear shift instruction is received, the vehicle is allowed to switch from the current gear to the parking gear.

[0080] For example, after the vehicle finishes the range test, the vehicle's dynamometer mode is turned off and the vehicle's automatic switch to the parking gear function is restored, so that the vehicle's automatic switch to the parking gear function can work normally in actual driving scenarios, that is, when the conditions for automatically switching to the parking gear are met, the gear is automatically switched to the parking gear to increase the convenience and safety of the vehicle.

[0081] Based on the above technical solution, after the vehicle completes the cruising range test, the vehicle control system can be restored to the normal operating mode, so that after receiving the parking gear switching command, the vehicle is allowed to switch to the parking gear, which is convenient for the driver to park the vehicle safely and stably, thereby enhancing parking safety.

[0082] Through the above technical solution, the present application sets a dynamometer mode for the vehicle, and turns on the dynamometer mode when the mode switch of the dynamometer mode is triggered and the conditions for turning on the dynamometer mode are met, so as to perform a target test on the vehicle. During the test, no additional equipment needs to be run, which simplifies the test process and saves hardware and labor costs. In addition, since the energy recovery function is turned on in the dynamometer mode, and the vehicle's body electronic stability system and anti-lock braking system are turned off, the vehicle's energy consumption and cruising range can be accurately measured. And by setting the start-up conditions, it can ensure that the dynamometer mode is only started in a safe and appropriate driving environment, avoiding the potential safety hazards caused by accidental activation during driving. In addition, during the cruising range test, the dynamometer can set different target gears and target vehicle speeds, thereby simulating driving scenarios under various working conditions, which is helpful for comprehensively evaluating vehicle performance. Then, adjusting the gear and vehicle speed according to the instructions of the dynamometer can reduce errors caused by human operation and improve the reliability of test data. During the vehicle's range test, if a parking gear switch command is received, measures are taken to keep the gear unchanged or switch to neutral, which can prevent the wheels from suddenly locking after the vehicle enters the parking gear, causing the rotating dynamometer hub to impact the wheel motor and damage the motor. In addition, after the vehicle completes the range test, the vehicle control system can be restored to normal operation mode, so that after receiving the parking gear switch command, the vehicle is allowed to switch to the parking gear, which is convenient for the driver to park the vehicle safely and stably, enhancing parking safety. In addition, after the vehicle completes the range test, turning on the body electronic stability system and anti-lock braking system can ensure the vehicle's driving stability, improve driving safety, and thus reduce the risk of accidents.

[0083] For example, Figure 2 The figure shows the feedback torque generated by the motor when the vehicle's electronic stability system is turned on during braking, and the feedback torque generated by the motor when the electronic stability system is turned off. Figure 2 Describe the effect of turning on the electronic stability system on energy recovery when testing the vehicle's range on a dynamometer.

[0084] It should be understood that when the vehicle recovers kinetic energy through the regenerative braking system during braking, the motor generates feedback torque. Among them, the vehicle speed and the feedback torque are positively correlated. The higher the vehicle speed, the greater the kinetic energy of the wheel rotation, and theoretically the more energy that can be recovered. Therefore, the feedback torque that the motor needs to generate also increases accordingly. However, when the battery is close to a full charge state or the motor reaches the maximum power generation, the feedback torque is maximum. Even if the vehicle speed increases, the feedback torque may no longer increase, or even decrease, to avoid damage to the system. For example, Figure 2As shown, the dotted line is the feedback torque generated by the electric motor during the braking process of the vehicle when the body electronic stability system is turned on. Because the body electronic stability system actively applies braking force to the wheels or adjusts the engine torque according to the vehicle posture and the driver's intention during the vehicle's driving process, it causes additional consumption of electrical energy, which in turn causes the vehicle's energy consumption to increase during the test and reduce the recovered energy. Therefore, in an embodiment of the present application, when conducting a range test, the dynamometer mode of the vehicle is turned on. In the dynamometer mode, the vehicle's body electronic stability system is turned off, and the body electronic stability system does not interfere with the vehicle's braking process, so that the vehicle's energy recovery function can be started normally, and normal energy recovery is achieved, thereby ensuring the accuracy of the test results. For example, Figure 2 As shown in the figure, the solid line is the feedback torque generated by the motor during the braking process of the vehicle when the body electronic stability system is turned off. Since the body electronic stability system is turned off, the body electronic stability system will not intervene in the braking process of the vehicle during the cruising range test, that is, no additional power consumption will be generated. When the energy recovery function of the vehicle is normally started and the anti-lock braking system is turned off, the accuracy of the test results can be ensured.

[0085] For example, Figure 3 A schematic flow chart of another vehicle testing method provided in an embodiment of the present application is shown. The vehicle testing method provided in an embodiment of the present application is applied to a vehicle, and the vehicle includes a chassis control system, a vehicle controller, a gear control module and a prompt module.

[0086] like Figure 3 As shown, the above vehicle testing method includes the following stages:

[0087] (1) Preparation

[0088] Exemplarily, in the preparation stage, the vehicle monitors in real time whether the vehicle's dynamometer mode activation conditions are met. The determination of whether the dynamometer mode activation conditions are met includes: if it is detected that the vehicle is placed on the dynamometer, the vehicle is powered on, the vehicle is stationary, the pedal travel of the brake pedal is greater than the preset travel, the current gear is the parking gear, and the number of times the start-stop switch is triggered within the preset time is greater than or equal to the preset number, then it is determined that the dynamometer mode activation conditions are met. When the vehicle controller of the vehicle receives a signal that satisfies the vehicle's dynamometer mode activation conditions, it indicates that the vehicle satisfies the vehicle's dynamometer mode activation conditions. For example, when the vehicle controller receives the vehicle's power-on signal, and detects that the vehicle's current speed is less than or equal to 2km / h, and the vehicle's current gear is the parking gear, and detects that the driver steps on the brake pedal, and detects that the start-stop switch is triggered 3 times within 2S; it indicates that the vehicle satisfies the vehicle's dynamometer mode activation conditions and enters the activation stage.

[0089] (2) Activation phase

[0090] Exemplarily, during the activation phase, the vehicle controller sends an activation signal for the dynamometer mode to the chassis control system of the vehicle. After receiving the activation signal for the dynamometer mode, the chassis control system responds to the activation signal for the dynamometer mode to turn on the vehicle's energy recovery function and turn off the vehicle's electronic stability system and anti-lock braking system.

[0091] After the energy recovery function of the vehicle is turned on and the electronic stability system and anti-lock braking system of the vehicle are turned off, the chassis control system sends a first feedback signal to the vehicle controller indicating that the dynamometer mode has been activated. After receiving the first feedback signal, the vehicle controller sends a control signal to the prompt module in response to the first feedback signal, and controls the prompt module to output prompt information. The prompt information includes information that the vehicle is undergoing a range test, information that the energy recovery function is turned on, and information that the electronic stability system and anti-lock braking system are turned off.

[0092] Exemplarily, after the dynamometer mode of the vehicle is turned on, the prompt module outputs prompt information to prompt the tester that the dynamometer mode of the vehicle has been activated, that is, the energy recovery function of the vehicle has been turned on, and the body electronic stability system and the anti-lock braking system have been turned off, and the vehicle can be tested for a range. The prompt information includes a display prompt and / or a sound prompt. In addition, the prompt module can continuously output prompt information during the range test to prompt the tester that the vehicle is undergoing a range test. Exemplarily, the prompt information can be output in the form of a signal light or in the form of a voice broadcast. For example, after the dynamometer mode of the vehicle is turned on, the prompt module controls the body electronic stability system fault light and the anti-lock braking system fault light in the instrument panel to light up to prompt the tester that the body electronic stability system and the anti-lock braking system have been turned off; and controls the microphone to emit a "beep beep" beep to prompt the tester that the dynamometer mode has been turned on and the vehicle can be tested for a range.

[0093] Exemplarily, after the vehicle controller receives the first feedback signal, in response to the first feedback signal, the vehicle controller sends a control signal to the gear control module of the vehicle to control the gear control module to stop responding to the automatic switch to the parking gear function. It should be understood that the vehicle has the function of automatically switching to the parking gear. When the conditions for automatically switching to the parking gear are met, the gear control module of the vehicle will receive the switching instruction of the parking gear and switch the gear to the parking gear. For example, after the vehicle stops, when the driver unfastens the seat belt or opens the door, the vehicle will trigger the automatic switch to the parking gear function to increase the convenience and safety of the vehicle. However, when the vehicle is tested for cruising range on a dynamometer, the vehicle is placed on the dynamometer and the wheels of the vehicle are in contact with the rotating hub of the dynamometer. During the cruising range test, the vehicle body does not move, and the rotation of the wheels drives the rotating hub to rotate. Therefore, during the cruising range test, if the vehicle's gear is suddenly switched to the parking gear, the wheels will be locked immediately due to the braking force, and the hub will continue to rotate under the action of inertia, which will cause an impact on the drive motor of the drive wheel and damage the motor. Therefore, in order to avoid the vehicle triggering the automatic switch to the parking gear function during the cruising range test, causing damage to the wheel motor. After receiving the switching instruction of the parking gear, the gear control module does not respond to the switching instruction of the parking gear and keeps the current gear unchanged; or, in response to the switching instruction of the parking gear, switches the current gear of the vehicle to neutral. It should be understood that after the current gear of the vehicle is switched to neutral, the wheels lose power, but the wheels and the hub are still rotating synchronously under the action of inertia. Therefore, the hub will not cause an impact on the wheel motor and damage the motor.

[0094] (3) Testing phase

[0095] For example, during a vehicle range test on a dynamometer, the dynamometer can display the target gear and / or target speed of the vehicle under the target condition on a display screen according to different working conditions, and the driver needs to adjust the gear of the vehicle according to the target gear prompted by the display screen. Among them, the target gear is not a parking gear and a neutral gear. And / or, the speed of the vehicle is adjusted according to the target speed prompted by the display screen. Moreover, the target speed can be a speed range. While the vehicle is driving under the target condition, it is necessary to drive according to the target speed, that is, to control the speed within the speed range.

[0096] (4) Closing stage

[0097] For example, when the vehicle completes the cruising range test, the prompt information is stopped from being output, and the vehicle electronic stability system and the anti-lock braking system are turned on.

[0098] Exemplarily, after the vehicle ends the cruising range test, the vehicle controller receives a signal to end the cruising range test, sends a dynamometer mode shutdown signal to the chassis control system, and the chassis control system receives the dynamometer mode shutdown signal. In response to the dynamometer mode shutdown signal, the chassis control system restores the functions of the body electronic stability system and the anti-lock braking system, so that the body electronic stability system can continue to monitor the vehicle state and actively intervene during the vehicle driving process, such as applying brakes, adjusting torque output and other measures; and the anti-lock braking system can prevent the wheels from locking during emergency braking to ensure the driving stability of the vehicle. At the same time, the chassis control system sends a second feedback signal to the vehicle controller indicating that the dynamometer mode is turned off. After the vehicle controller receives the second feedback signal, in response to the second feedback signal, the vehicle controller sends a control signal to the prompt module to control the prompt module to stop outputting prompt information. For example, when the vehicle receives a power-off command or a charging command, it is considered that the vehicle ends the cruising range test, the vehicle dynamometer mode is turned off, and the chassis control system restores the functions of the body electronic stability system and the anti-lock braking system. At the same time, the prompt module turns off the electronic stability system fault light and the anti-lock brake system fault light in the instrument panel and turns off the "beep beep" beeping sound to remind the tester that the vehicle's dynamometer mode is turned off and the electronic stability system and anti-lock brake system are turned on.

[0099] At the same time, the vehicle controller receives the second feedback signal, and in response to the second feedback signal, the vehicle controller sends a control signal to the gear control module to control the gear control module to resume the response to the automatic switching to the parking gear function. Exemplarily, after the vehicle ends the endurance mileage test, the dynamometer mode of the vehicle is turned off, and the gear control module resumes the automatic switching to the parking gear function of the vehicle, so that the automatic switching to the parking gear function of the vehicle can work normally in the actual driving scene, that is, when the conditions for automatically switching to the parking gear are met, the gear is automatically switched to the parking gear to increase the convenience and safety of the vehicle.

[0100] Through the above technical solution, the present application sets a dynamometer mode for the vehicle, and turns on the dynamometer mode when the mode switch of the dynamometer mode is triggered and the conditions for turning on the dynamometer mode are met, so as to perform a target test on the vehicle. During the test, no additional equipment needs to be run, which simplifies the test process and saves hardware and labor costs. In addition, since the energy recovery function is turned on in the dynamometer mode, and the vehicle's body electronic stability system and anti-lock braking system are turned off, the vehicle's energy consumption and cruising range can be accurately measured. And by setting the start-up conditions, it can ensure that the dynamometer mode is only started in a safe and appropriate driving environment, avoiding the potential safety hazards caused by accidental activation during driving. In addition, during the cruising range test, the dynamometer can set different target gears and target vehicle speeds, thereby simulating driving scenarios under various working conditions, which is helpful for comprehensively evaluating vehicle performance. Then, adjusting the gear and vehicle speed according to the instructions of the dynamometer can reduce errors caused by human operation and improve the reliability of test data. During the vehicle's range test, if a parking gear switch command is received, measures are taken to keep the gear unchanged or switch to neutral, which can prevent the wheels from suddenly locking after the vehicle enters the parking gear, causing the rotating dynamometer hub to impact the wheel motor and damage the motor. In addition, after the vehicle completes the range test, the vehicle control system can be restored to normal operation mode, so that after receiving the parking gear switch command, the vehicle is allowed to switch to the parking gear, which is convenient for the driver to park the vehicle safely and stably, enhancing parking safety. In addition, after the vehicle completes the range test, turning on the body electronic stability system and anti-lock braking system can ensure the vehicle's driving stability, improve driving safety, and thus reduce the risk of accidents.

[0101] The following is an embodiment of the device of the present application, which can be used to execute the embodiment of the method of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method of the present application.

[0102] Figure 4 A structural schematic diagram of a vehicle testing device provided in an embodiment of the present application is shown. The vehicle testing device is configured on an electric vehicle or a hybrid vehicle. The vehicle has a dynamometer mode. When the dynamometer mode is turned on, the vehicle's energy recovery function is turned on, and the vehicle's body electronic stability system and anti-lock braking system are turned off.

[0103] like Figure 4 As shown, the vehicle testing device 400 includes:

[0104] The first control module 410 is used to determine whether the start condition of the dynamometer mode is met when the mode switch of the dynamometer mode is triggered;

[0105] The second control module 420 is used to start the dynamometer mode when the start condition is met to perform a target test on the vehicle.

[0106] In a possible implementation, the target test is a test of a vehicle based on a dynamometer; the first control module 410 is specifically used for:

[0107] If it is detected that the vehicle is placed on the dynamometer, the vehicle is powered on, the vehicle is stationary, the pedal travel of the brake pedal is greater than the preset travel, the current gear is the parking gear, and the number of times the start-stop switch is triggered within the preset time is greater than or equal to the preset number of times, then it is determined that the conditions for starting the dynamometer mode are met.

[0108] In a possible implementation, the test of the vehicle based on the dynamometer includes a cruising range test, and the second control module 420 is specifically used for:

[0109] Turn on the dynamometer mode and adjust the vehicle's gear and / or speed to allow the vehicle to perform a range test on the dynamometer.

[0110] In a possible implementation, the second control module 420 is specifically used for:

[0111] Obtaining a target gear position output by a dynamometer; wherein the target gear position is not a parking gear position and a neutral gear;

[0112] Switch the current gear of the vehicle to the target gear;

[0113] and / or,

[0114] Obtain the target vehicle speed output by the dynamometer;

[0115] Adjust the vehicle's current speed to the target speed.

[0116] In a possible implementation, the vehicle testing device 400 further includes:

[0117] The output module is used to output prompt information when the dynamometer mode is turned on; the prompt information includes information that the vehicle is undergoing a cruising range test, information that the energy recovery function is turned on, and information that the body electronic stability system and the anti-lock braking system are turned off; and when the vehicle completes the cruising range test, stop outputting the prompt information and turn on the body electronic stability system and the anti-lock braking system.

[0118] In a possible implementation, the second control module 420 is further configured to:

[0119] During the vehicle range test, if a parking gear shift instruction is received, the vehicle is prohibited from shifting from the current gear to the parking gear; and,

[0120] Maintain the vehicle's current gear position, or shift the vehicle's current gear position to neutral.

[0121] In a possible implementation, the second control module 420 is further configured to:

[0122] When the vehicle completes the range test, if a parking gear shift command is received, the vehicle is allowed to shift from the current gear to the parking gear.

[0123] Figure 5 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application.

[0124] For example, Figure 5 As shown, the vehicle 500 includes: a memory 501 and a processor 502, wherein the memory 501 stores an executable program code 5011, and the processor 502 is used to call and execute the executable program code 5011 to perform a vehicle testing method.

[0125] In this embodiment, the functional modules of the vehicle can be divided according to the above-mentioned vehicle testing method example. For example, each functional module can be corresponded, or two or more functions can be integrated into one processing module. The above-mentioned integrated module can be implemented in the form of hardware. It should be noted that the division of modules in this embodiment is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0126] In the case of dividing each functional module according to each function, the vehicle may include: an acquisition module, a processing module, a control module, etc. It should be noted that all relevant contents of each step involved in the above vehicle testing method embodiment can be referred to the functional description of the corresponding functional module, which will not be repeated here.

[0127] The vehicle provided in this embodiment is used to execute the above-mentioned vehicle testing method, so the same effect as the above-mentioned implementation method can be achieved.

[0128] In the case of an integrated unit, the vehicle may include a processing module and a storage module. The processing module may be used to control and manage the actions of the vehicle. The storage module may be used to support the vehicle in executing relevant program codes and data.

[0129] The processing module may be a processor or a controller, which may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of the present application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc. The storage module may be a memory.

[0130] This embodiment also provides a computer-readable storage medium, in which a computer program code is stored. When the computer program code is executed on a computer, the computer executes the above-mentioned related method steps to implement a vehicle testing method in the above-mentioned embodiment.

[0131] This embodiment further provides a computer program product. When the computer program product is run on a computer, the computer is enabled to execute the above-mentioned related steps to implement a vehicle testing method in the above-mentioned embodiment.

[0132] In addition, the vehicle provided in the embodiments of the present application may specifically be a chip, component or module, and the vehicle may include a connected processor and memory; wherein the memory is used to store instructions, and when the vehicle is running, the processor may call and execute instructions so that the chip executes a vehicle testing method in the above-mentioned embodiments.

[0133] The vehicle, computer-readable storage medium, computer program product or chip provided in this embodiment are all used to execute the corresponding vehicle testing method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding vehicle testing method provided above, and will not be repeated here.

[0134] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0135] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0136] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A vehicle testing method, characterized in that: Applied to a vehicle, the vehicle is an electric vehicle or a hybrid vehicle, the vehicle has a dynamometer mode, when the dynamometer mode is turned on, the energy recovery function of the vehicle is turned on, and the body electronic stability system and anti-lock braking system of the vehicle are turned off; the vehicle testing method comprises: When the mode switch of the dynamometer mode is triggered, determining whether a start condition of the dynamometer mode is met; When the start-up condition is met, the dynamometer mode is started to perform a target test on the vehicle.

2. The vehicle testing method according to claim 1, characterized in that: The target test is a test of the vehicle based on a dynamometer; the determination of whether the start-up condition of the dynamometer mode is met includes: If it is detected that the vehicle is placed on the dynamometer, and the vehicle is powered on, the vehicle is stationary, the pedal travel of the brake pedal is greater than the preset travel, the current gear is the parking gear, and the number of times the start-stop switch is triggered within the preset time is greater than or equal to the preset number of times, it is determined that the start-up conditions of the dynamometer mode are met.

3. The vehicle testing method according to claim 2, characterized in that: The test of the vehicle based on the dynamometer includes a cruising range test, and the turning on the dynamometer mode to perform a target test on the vehicle includes: The dynamometer mode is turned on, and the gear position and / or speed of the vehicle is adjusted so that the vehicle can perform a range test on the dynamometer.

4. The vehicle testing method according to claim 3, characterized in that: The adjusting the gear position and / or speed of the vehicle comprises: Obtaining a target gear position output by the dynamometer; wherein the target gear position is not a parking gear position and a neutral gear; Switching the current gear of the vehicle to the target gear; and / or, Obtaining a target vehicle speed output by the dynamometer; The current vehicle speed of the vehicle is adjusted to the target vehicle speed.

5. The vehicle testing method according to claim 3, characterized in that: The vehicle testing method further comprises: When the dynamometer mode is turned on, a prompt message is output; wherein the prompt message includes information that the vehicle is undergoing a range test, information that the energy recovery function is turned on, and information that the vehicle electronic stability system and the anti-lock braking system are turned off; When the vehicle completes the cruising range test, the prompt information is stopped from being output, and the vehicle body electronic stability system and the anti-lock braking system are turned on.

6. The vehicle testing method according to claim 3, characterized in that: The vehicle testing method further comprises: During the vehicle's range test, if a parking gear shift instruction is received, prohibiting the vehicle from switching from a current gear to the parking gear; and, The current gear position of the vehicle is maintained unchanged, or the current gear position of the vehicle is switched to neutral.

7. The vehicle testing method according to claim 6, characterized in that: The vehicle testing method further comprises: When the vehicle completes the cruising range test, if a switching instruction of the parking gear is received, the vehicle is allowed to switch from the current gear to the parking gear.

8. A vehicle testing device, characterized in that: The vehicle is configured to be an electric vehicle or a hybrid vehicle, and the vehicle has a dynamometer mode. When the dynamometer mode is turned on, the energy recovery function of the vehicle is turned on, and the electronic stability system and the anti-lock braking system of the vehicle are turned off. The vehicle testing device includes: A first control module, configured to determine whether a start condition of the dynamometer mode is met when a mode switch of the dynamometer mode is triggered; The second control module is used to start the dynamometer mode when the start condition is met to perform a target test on the vehicle.

9. A vehicle, characterized in that: The vehicle comprises: A memory for storing executable program codes; A processor is used to call and run the executable program code from the memory, so that the vehicle executes the vehicle testing method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed, the vehicle testing method according to any one of claims 1 to 7 is implemented.

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