Method, device and system for testing wading performance of hybrid box assembly

Abstract

The invention relates to a method and a device for testing the wading performance of a hybrid power box assembly, computer equipment, a system for testing the wading performance of the hybrid power box assembly and a computer readable storage medium. The method comprises the steps that under the condition that the environment temperature of a to-be-tested hybrid power box assembly reaches a target temperature, the angle of the hybrid power box assembly is adjusted to be a target pitching angle, and the hybrid power box assembly is controlled to be in a working mode; the hybrid power box assembly in the working mode is controlled to be immersed into water according to the target immersion depth, and the angle of the hybrid power box assembly immersed into the water is adjusted to be a horizontal angle after the target immersion depth is kept for a first preset duration; according to the pressure value, adjusted to the horizontal angle, in the cavity of the hybrid power box assembly, a wading performance test result, matched with the target temperature, the target pitching angle and the target soaking depth, of the hybrid power box assembly is obtained. By adopting the method, the test precision of the wading performance test of the hybrid box assembly can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle testing technology, and in particular to a method, device, computer equipment, testing system, computer-readable storage medium and computer program product for testing the water wading performance of a hybrid box assembly. Background Art

[0002] With the development of automobile testing technology, a technology has emerged to test the waterproof and safety performance of vehicles to ensure the safe driving of vehicles in various complex environments. As more and more pure electric vehicles are used, vehicles are required to be able to work normally to a certain extent when wading. Therefore, higher systematic requirements are placed on the wading performance of powertrain products, namely the hybrid box assembly.

[0003] At present, the test of the electric drive water wading performance of a vehicle is usually carried out by conducting a water wading test on the whole vehicle, and the water wading performance is tested by subjecting the whole vehicle to an ice water impact immersion or spray test.

[0004] However, the above test method can usually only be tested in one vehicle installation posture, and the installation time is relatively late, the test cost is high, and it is quite difficult to thoroughly optimize after the problem occurs. In addition, the process of testing in the vehicle installation posture cannot simulate the entire process of the vehicle-hybrid box assembly pitching from entering-staying-out of water under various driving conditions, and the water wading performance of the hybrid box assembly is not fully examined. Therefore, the test accuracy of the existing hybrid box assembly water wading performance test is low. Summary of the invention

[0005] Based on this, it is necessary to provide a hybrid transmission assembly water wading performance test method, device, computer equipment, hybrid transmission assembly water wading performance test system, computer readable storage medium and computer program product that can improve the test accuracy of the hybrid transmission assembly water wading performance test in response to the above-mentioned technical problems.

[0006] In a first aspect, the present application provides a method for testing the wading performance of a hybrid box assembly, comprising:

[0007] When the ambient temperature of the hybrid case assembly to be tested reaches a target temperature, adjusting the angle of the hybrid case assembly to a target pitch angle, and controlling the hybrid case assembly to be in a working mode;

[0008] Controlling the hybrid case assembly in the working mode to be immersed in water according to a target immersion depth, and adjusting the angle of the hybrid case assembly immersed in water to a horizontal angle after maintaining the first preset time;

[0009] According to the pressure value in the cavity of the hybrid case assembly adjusted to a horizontal angle, a wading performance test result of the hybrid case assembly matching the target temperature, the target pitch angle, and the target immersion depth is obtained.

[0010] In one of the embodiments, the water wading performance test result of the hybrid case assembly matching the target temperature, the target pitch angle and the target immersion depth is obtained based on the pressure value in the cavity of the hybrid case assembly adjusted to a horizontal angle, including: obtaining the pressure value change rate of the hybrid case assembly adjusted to a horizontal angle in each time interval based on the pressure value in the cavity; when any of the pressure value change rates is greater than a preset change rate threshold, or the hybrid case assembly triggers an automatic leakage protection program, stopping immersing the hybrid case assembly in water, and determining that the water wading performance test result is a failure in the water wading performance test; when the hybrid case assembly adjusted to a horizontal angle remains in water for a second preset time period, determining that the water wading performance test result is a pass in the water wading performance test; the second preset time period is greater than the first preset time period, and the second preset time period includes multiple time intervals.

[0011] In one of the embodiments, after determining that the result of the water wading performance test is that the water wading performance test fails, it also includes: obtaining a pressure value change curve in the cavity of the hybrid case assembly within a preset time interval; the interval length of the preset time interval is a third preset time length, and the interval end point of the preset time interval is the time point when the hybrid case assembly stops being immersed in water; the third preset time length is less than the second preset time length; and according to the pressure value change curve in the cavity, obtaining the water wading performance failure category of the hybrid case assembly.

[0012] In one of the embodiments, obtaining the water wading performance failure category of the hybrid case assembly based on the in-cavity pressure value change curve includes: obtaining the degree of similarity between the in-cavity pressure value change curve and a plurality of pre-constructed candidate in-cavity pressure value change curves; the plurality of candidate in-cavity pressure value change curves respectively correspond to different water wading performance failure categories; and taking the water wading performance failure category corresponding to the candidate in-cavity pressure value change curve with the greatest degree of similarity as the water wading performance failure category of the hybrid case assembly.

[0013] In one of the embodiments, the water in which the hybrid case assembly is immersed is an ice-water mixture; before the hybrid case assembly in the working mode is controlled to be immersed in water according to a target immersion depth, it also includes: controlling the hybrid case assembly in the working mode to be set above a water pool loaded with the ice-water mixture to ensure that the hybrid case assembly is not immersed in the ice-water mixture; the hybrid case assembly in the working mode is controlled to be immersed in water according to the target immersion depth, including: controlling the water pool to rise at a preset rate until the hybrid case assembly is immersed in the ice-water mixture according to the target immersion depth.

[0014] In one of the embodiments, controlling the hybrid box assembly to be in the working mode includes: setting the voltage of the hybrid box assembly to the rated voltage of the hybrid box assembly, and sending a speed command to the hybrid box assembly; the speed command is used to instruct the motor in the hybrid box assembly for driving the vehicle to operate according to the speed command, so that the hybrid box assembly is in the working mode.

[0015] In a second aspect, the present application also provides a hybrid box assembly wading performance test device, comprising:

[0016] A working mode setting module, used for adjusting the angle of the hybrid box assembly to be tested to a target pitch angle and controlling the hybrid box assembly to be in a working mode when the ambient temperature of the hybrid box assembly to be tested reaches a target temperature;

[0017] A hybrid box assembly immersion module, used to control the hybrid box assembly in the working mode to be immersed in water according to a target immersion depth, and after maintaining the first preset time, adjust the angle of the hybrid box assembly immersed in water to a horizontal angle;

[0018] The test result acquisition module is used to obtain the wading performance test result of the hybrid case assembly matching the target temperature, the target pitch angle and the target immersion depth according to the pressure value in the cavity of the hybrid case assembly adjusted to a horizontal angle.

[0019] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the method for testing the water wading performance of a hybrid box assembly as described in any one of the embodiments in the first aspect is implemented.

[0020] In a fourth aspect, the present application further provides a hybrid box assembly water wading performance test system, comprising: a computer device as described in the third aspect and a hybrid box assembly water wading performance test device communicatively connected to the computer device; the hybrid box assembly water wading performance test device comprises: an environmental chamber for setting up a hybrid box assembly to be tested, a water pool for loading an ice-water mixture, and a water tank and an electronic water pump for providing the ice-water mixture to the water pool; wherein the environmental chamber is provided with a heating device for controlling the ambient temperature of the hybrid box assembly; the water pool is provided with a lifting device for changing the height of the water pool so that the hybrid box assembly is immersed in the ice-water mixture; the water tank is connected to the water pool by a pipeline for providing the ice-water mixture to the water pool through the electronic water pump.

[0021] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method for testing the water wading performance of a hybrid box assembly as described in any one of the embodiments in the first aspect is implemented.

[0022] In a sixth aspect, the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the hybrid box assembly water wading performance testing method described in any embodiment of the first aspect.

[0023] The above-mentioned hybrid box assembly water wading performance test method, device, computer equipment, hybrid box assembly water wading performance test system, computer-readable storage medium and computer program product, when the ambient temperature of the hybrid box assembly to be tested reaches the target temperature, adjust the angle of the hybrid box assembly to a target pitch angle, and control the hybrid box assembly to be in a working mode; control the hybrid box assembly in the working mode to be immersed in water according to a target immersion depth, and after maintaining a first preset time, adjust the angle of the hybrid box assembly immersed in water to a horizontal angle; according to the pressure value in the cavity of the hybrid box assembly adjusted to the horizontal angle, obtain the water wading performance test result of the hybrid box assembly matching the target temperature, target pitch angle and target immersion depth. The present application adjusts the angle of the hybrid case assembly to a target pitch angle when the ambient temperature of the hybrid case assembly to be tested reaches a target temperature, controls the hybrid case assembly to be in a working mode, and then immerses the hybrid case assembly in water according to a target immersion depth, maintains the hybrid case assembly for a first preset time, and then adjusts it to a horizontal state. Then, the pressure value in the cavity of the hybrid case assembly after adjusting to a horizontal angle can be obtained, thereby obtaining a water wading performance test result of the hybrid case assembly corresponding to the target temperature, target pitch angle, and target immersion depth. Compared with the traditional technology that requires the hybrid case assembly to be tested in a vehicle installation posture, the present application provides a hybrid case assembly water wading performance test method that can be tested in a vehicle installation posture, and the method also effectively simulates the entire process of the hybrid case assembly pitching from entering water-maintaining-exiting water, thereby improving the test accuracy of the hybrid case assembly water wading performance test. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] FIG1 is a diagram showing an application environment of a method for testing the wading performance of a hybrid box assembly in one embodiment;

[0026] FIG2 is a schematic flow chart of a method for testing the wading performance of a hybrid box assembly in one embodiment;

[0027] FIG3 is a schematic diagram of a process for obtaining a water wading performance test result in one embodiment;

[0028] FIG4 is a structural block diagram of a hybrid box assembly wading performance test device in one embodiment;

[0029] FIG5 is a diagram showing the internal structure of a computer device in one embodiment;

[0030] FIG. 6 is a schematic structural diagram of a hybrid box assembly wading performance test system in one embodiment. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] The hybrid box assembly wading performance test method provided in the embodiment of the present application can be applied in the application environment shown in FIG1 . The terminal 101 communicates with the hybrid box assembly wading performance test device 102 through a circuit, and the hybrid box assembly 103 to be tested can be arranged inside the hybrid box assembly wading performance test device 102 . Specifically, when the terminal 101 detects that the ambient temperature of the hybrid box assembly 103 in the hybrid box assembly wading performance test device 102 reaches the target temperature, the hybrid box assembly 103 can be adjusted to the target pitch angle through the hybrid box assembly wading performance test device 102, and the hybrid box assembly 103 can be controlled to be in a working state. After that, the terminal 101 can use the hybrid box assembly wading performance test device 102 to put the hybrid box assembly 103 into the water according to the target immersion depth, and after keeping it for a period of time, adjust the angle of the hybrid box assembly 103 to a horizontal angle, and obtain the pressure value in the cavity of the hybrid box assembly 103, thereby completing the wading performance test of the hybrid box assembly 103 at the target temperature, target pitch angle and target immersion depth, and obtaining the wading performance test result. Among them, the terminal 101 can be, but is not limited to, various personal computers, laptops, single-chip devices, smart phones, tablet computers, Internet of Things devices, and portable wearable devices.

[0033] In an exemplary embodiment, as shown in FIG2 , a method for testing the wading performance of a hybrid box assembly is provided, which is described by taking the method applied to the terminal 101 in FIG1 as an example, and includes the following steps:

[0034] Step S201, when the ambient temperature of the hybrid box assembly 103 to be tested reaches the target temperature, the angle of the hybrid box assembly 103 is adjusted to the target pitch angle, and the hybrid box assembly 103 is controlled to be in the working mode.

[0035] The hybrid box assembly 103 to be tested refers to the hybrid box assembly that needs to be tested for wading performance, and the target temperature is the pre-set environmental test temperature of the hybrid box assembly, for example, it can be 105°C, 85°C or 65°C, etc., and the target pitch angle refers to the pre-set pitch angle of the hybrid box assembly, which can be used to simulate the water entry angle and water exit angle of the hybrid box assembly 103, and the working mode refers to the mode when the hybrid box assembly 103 is in a working state, which is used to simulate the actual operation of the hybrid box assembly 103 during the wading process.

[0036] Specifically, when the water wading performance test is performed on the hybrid box assembly 103, the hybrid box assembly 103 can be pre-set inside the hybrid box assembly water wading performance test equipment 102, and then the terminal 101 can control the temperature of the hybrid box assembly water wading performance test equipment 102 to change the ambient temperature of the hybrid box assembly 103. When the ambient temperature reaches the target temperature, the angle of the hybrid box assembly 103 is adjusted to the target pitch angle through the hybrid box assembly water wading performance test equipment 102, and an operation instruction can also be sent to the hybrid box assembly 103 to control the hybrid box assembly 103 to be in the working mode.

[0037] Step S202, controlling the hybrid case assembly 103 in the working mode to be immersed in water according to a target immersion depth, and adjusting the angle of the hybrid case assembly 103 immersed in water to a horizontal angle after maintaining the first preset time.

[0038] The target immersion depth refers to a pre-set wading test depth of the hybrid box assembly, for example, it may be 25%, 50% or 75% of the total height of the hybrid box assembly 103, etc., and the first preset duration refers to the duration for which the hybrid box assembly 103 maintains the target pitch angle immersed in water, which may be 1 minute.

[0039] Specifically, after adjusting the angle of the hybrid box assembly 103 to the target pitch angle and controlling it to be in the working mode, the terminal 101 can also control the hybrid box assembly wading performance test equipment 102 to immerse the hybrid box assembly 103 in water according to the target immersion depth, and keep the hybrid box assembly 103 immersed in water at the target pitch angle for a first preset time, and then adjust the angle of the hybrid box assembly 103 to restore its angle in the water to a horizontal angle.

[0040] Step S203 , obtaining a wading performance test result of the hybrid case assembly 103 matching a target temperature, a target pitch angle, and a target immersion depth according to the pressure value in the cavity of the hybrid case assembly 103 adjusted to a horizontal angle.

[0041] The intra-cavity pressure value refers to the intra-cavity pressure value of the hybrid case assembly 103 after the hybrid case assembly 103 is restored to a horizontal angle and enters the water. The value can be measured by a cavity pressure sensor arranged in the hybrid case assembly 103. In this embodiment, after the terminal 101 restores the angle of the hybrid case assembly 103 to a horizontal angle and enters the water, it can also obtain the intra-cavity pressure value of the hybrid case assembly 103 through the pressure sensor arranged in the cavity of the hybrid case assembly 103, so as to obtain the intra-cavity pressure value of the hybrid case assembly 103 according to the pressure value, so as to obtain the wading performance test result of the hybrid case assembly 103 matching the target temperature, target pitch angle and target immersion depth according to the pressure value, that is, the wading performance test result of the hybrid case assembly 103 is obtained when the ambient temperature is the target temperature, the water entry angle and the water exit angle are the target pitch angles, and the immersion depth is the target immersion depth.

[0042] In the above-mentioned hybrid case assembly water wading performance test method, when the ambient temperature of the hybrid case assembly 103 to be tested reaches the target temperature, the angle of the hybrid case assembly 103 is adjusted to the target pitch angle, and the hybrid case assembly 103 is controlled to be in the working mode; the hybrid case assembly 103 in the working mode is controlled to be immersed in water according to the target immersion depth, and after maintaining the first preset time, the angle of the hybrid case assembly 103 immersed in water is adjusted to a horizontal angle; according to the pressure value in the cavity of the hybrid case assembly 103 adjusted to the horizontal angle, the water wading performance test result of the hybrid case assembly 103 matching the target temperature, the target pitch angle and the target immersion depth is obtained. The present application adjusts the angle of the hybrid case assembly 103 to a target pitch angle when the ambient temperature of the hybrid case assembly 103 to be tested reaches a target temperature, controls the hybrid case assembly 103 to be in a working mode, and then immerses the hybrid case assembly 103 in water according to a target immersion depth, maintains the hybrid case assembly 103 for a first preset time, and then adjusts it to a horizontal state. Then, the pressure value in the cavity of the hybrid case assembly 103 after adjusting to a horizontal angle can be obtained, thereby obtaining a water wading performance test result of the hybrid case assembly 103 corresponding to the target temperature, the target pitch angle, and the target immersion depth. Compared with the traditional technology that requires the hybrid case assembly to be tested in a vehicle installation posture, the present application provides a hybrid case assembly water wading performance test method that can be tested without being tested in a vehicle installation posture, and the method also effectively simulates the entire process of the hybrid case assembly pitching from entering water-maintaining-exiting water, thereby improving the test accuracy of the hybrid case assembly water wading performance test.

[0043] In one embodiment, as shown in FIG3 , step S203 may further include:

[0044] Step S301, according to the pressure value in the cavity, obtaining the pressure value change rate of the hybrid case assembly adjusted to a horizontal angle in each time interval.

[0045] The time interval refers to the period of time during which the hybrid box assembly 103 is immersed in water after the terminal 101 adjusts the angle of the hybrid box assembly 103 to a horizontal angle. The time interval may be 1 s, and the pressure value change rate refers to the rate of change of the pressure value in the cavity of the hybrid box assembly 103 within the period of time.

[0046] Specifically, after the hybrid box assembly 103 is kept immersed in water at a horizontal angle, the terminal 101 can also obtain the pressure value in the cavity of the hybrid box assembly 103 at each moment from the pressure sensor in the cavity of the hybrid box assembly 103, and then the pressure value change rate in each time interval can be obtained based on the above pressure value.

[0047] Taking the time interval length of 5s as an example, the terminal 101 can obtain the pressure values ​​in the cavity at different times in the time intervals of 0-5s, 5-10s, 10-15s, etc. after the hybrid case assembly 103 is kept immersed in water at a horizontal angle. Then, the pressure value change rate of the hybrid case assembly 103 in each time interval can be obtained according to the pressure value in the cavity at different times in the above time intervals, thereby obtaining the pressure value change rate of the hybrid case assembly 103 in 0-5s, the pressure value change rate in 5-10s, and the pressure value change rate in 10-15s.

[0048] Step S302, when the change rate of any pressure value is greater than the preset change rate threshold, or the hybrid box assembly 103 triggers the automatic leakage protection program, stop immersing the hybrid box assembly in water, and determine that the water wading performance test result is failed.

[0049] Afterwards, if the pressure value change rate is greater than a preset change rate threshold, it indicates that the pressure value in the cavity of the hybrid case assembly 103 has changed dramatically within a period of time, or the hybrid case assembly 103 has triggered the automatic leakage protection program, which means that the hybrid case assembly 103 may have an abnormality. At this time, the terminal 101 can control the hybrid case assembly water wading performance test equipment 102 to stop the hybrid case assembly 103 from being immersed in water. Since the hybrid case assembly 103 has an abnormality at this time, the terminal 101 can determine that the water wading performance test result of the hybrid case assembly 103 is that the water wading performance test fails.

[0050] Step S303, when the hybrid box assembly 103 adjusted to a horizontal angle remains in the water for a second preset time, determining that the water wading performance test result is passed; the second preset time is greater than the first preset time, and the second preset time includes multiple time intervals.

[0051] The second preset time length refers to the time length that the hybrid box assembly 103 adjusted to a horizontal angle is immersed in water, which is greater than the first preset time length and may include multiple time intervals. For example, the second preset time length may be 15 minutes, which is greater than the first preset time length of 1 minute, and may be composed of multiple 5s time intervals. Since the hybrid box assembly stops being immersed in water when the pressure value change rate is greater than the preset change rate threshold or the automatic leakage protection program is triggered, if the hybrid box assembly 103 remains in the water for the second preset time length, it means that the hybrid box assembly 103 has been in the water for 15 minutes without any abnormality. At this time, the terminal 101 can determine that the current water wading performance test result of the hybrid box assembly 103 is that the water wading performance test has passed.

[0052] In this embodiment, the terminal 101 can also obtain the rate of change of the pressure value of the hybrid box assembly 103 in each time interval according to the pressure value in the cavity. If the pressure value in a certain time interval changes drastically, or the automatic leakage protection program is triggered, the immersion of the hybrid box assembly 103 in water can be stopped, and it can be determined that the water wading performance test has failed. This method can improve the safety of the test while ensuring the accuracy of the test results. At the same time, if the hybrid box assembly 103 remains in the water for the second preset time, it indicates that the hybrid box assembly 103 is immersed in the water for the second preset time without any failure. At this time, it can be determined that the hybrid box assembly 103 has passed the test. This method can also improve the accuracy of the test results.

[0053] In addition, after step S302, the following may also be included: obtaining a pressure value change curve in the cavity of the hybrid case assembly 103 within a preset time interval; the interval length of the preset time interval is a third preset time length, and the interval end point of the preset time interval is a time point when the hybrid case assembly 103 stops being immersed in water; the third preset time length is less than the second preset time length; and according to the pressure value change curve in the cavity, obtaining the water wading performance failure category of the hybrid case assembly 103.

[0054] The pressure value variation curve refers to the variation curve of the pressure value in the cavity of the hybrid case assembly 103 within the preset time interval, wherein the interval length of the preset time interval is the third preset time length, and the interval end corresponds to the time point when the hybrid case assembly 103 stops being immersed in water. Specifically, when the terminal 101 takes the hybrid case assembly 103 out of the water, it can also collect the time interval before the time with the interval length of the third preset time length as the preset time interval, and obtain the variation curve of the pressure value in the cavity of the hybrid case assembly 103 within the preset time interval.

[0055] For example, the third preset time length can be 30s. If the pressure value change rate of the hybrid box assembly 103 is greater than the preset change rate threshold after being immersed in water at a horizontal angle for 3 minutes, or the automatic leakage protection program is triggered, the terminal 101 can use the time from 2 minutes and 30 seconds to 3 minutes when the hybrid box assembly 103 is immersed in water at a horizontal angle as the preset time interval, and obtain the pressure value change curve in the cavity of the hybrid box assembly 103 within the preset time interval.

[0056] Afterwards, the terminal 101 can further identify the water wading performance failure category of the hybrid box assembly 103 according to the pressure value change curve in the cavity, that is, identify the water wading performance failure category of the hybrid box assembly 103 according to the pressure value change curve.

[0057] In this embodiment, if it is detected that the water wading performance test fails, the water wading performance failure category of the hybrid case assembly 103 can also be identified based on the pressure value change curve in the cavity of the hybrid case assembly 103 within a preset time interval. In this way, the efficiency of water wading performance fault detection of the hybrid case assembly 103 can be improved.

[0058] Furthermore, obtaining the water wading performance failure category of the hybrid box assembly based on the in-cavity pressure value change curve can further include: obtaining the in-cavity pressure value change curve and the similarity between multiple pre-constructed candidate in-cavity pressure value change curves; the multiple candidate in-cavity pressure value change curves correspond to different water wading performance failure categories respectively; and taking the water wading performance failure category corresponding to the candidate in-cavity pressure value change curve with the greatest similarity as the water wading performance failure category of the hybrid box assembly.

[0059] The candidate cavity pressure value change curve refers to a pre-constructed cavity pressure value change curve, which can be used to characterize different water wading performance failure categories of the hybrid box assembly. For example, the candidate cavity pressure value change curve may include curve 1, curve 2, curve 3, etc., wherein the water wading performance failure category corresponding to curve 1 is transmission case joint surface leakage, the water wading performance failure category corresponding to curve 2 is vent plug function failure, and the water wading performance failure category corresponding to curve 3 is internal water channel airtight failure, etc.

[0060] Specifically, the terminal 101 may pre-store a plurality of candidate cavity pressure value change curves representing different water wading performance failure categories, and then the cavity pressure value change curve of the hybrid case assembly 103 within a preset time interval may be similarly calculated to each candidate cavity pressure value change curve, thereby determining the candidate cavity pressure value change curve with the greatest similarity, and using the water wading performance failure category corresponding to the candidate cavity pressure value change curve as the water wading performance failure category of the hybrid case assembly 103.

[0061] For example, the pressure value change curve of the cavity of the hybrid case assembly 103 within the preset time interval is most similar to curve 2, then the terminal 101 can use the water wading performance failure category corresponding to curve 2, that is, the failure of the vent plug function, as the water wading performance failure category of the hybrid case assembly 103.

[0062] In this embodiment, a plurality of candidate cavity pressure value change curves corresponding to different water wading performance failure categories can also be pre-constructed, so as to identify the water wading performance failure category of the hybrid case assembly 103 based on the cavity pressure value change curves and the degree of similarity between the candidate cavity pressure value change curves. In this way, the accuracy of identifying the water wading performance failure category of the hybrid case assembly 103 can be improved.

[0063] In one embodiment, the water in which the hybrid box assembly 103 is immersed is an ice-water mixture; before step S202, it may also include: controlling the hybrid box assembly in the working mode to be set above a water pool loaded with the ice-water mixture to ensure that the hybrid box assembly is not immersed in the ice-water mixture; step S202 may further include: controlling the water pool to rise at a preset rate until the hybrid box assembly is immersed in the ice-water mixture according to the target immersion depth.

[0064] In this embodiment, the water in which the hybrid box assembly 103 is immersed may refer to an ice-water mixture, which may be loaded in a water pool, and the water pool may be set in the hybrid box assembly water wading performance test device 102. Specifically, after adjusting the hybrid box assembly 103 to the working mode, the terminal 101 may first control the hybrid box assembly 103 to be set above the water pool loaded with the ice-water mixture to ensure that the hybrid box assembly 103 is not immersed in water. Afterwards, if the hybrid box assembly 103 needs to be immersed in water, the water pool set in the hybrid box assembly water wading performance test device 102 may be controlled to follow a certain rate until the hybrid box assembly 103 is immersed in the ice-water mixture according to the target immersion depth.

[0065] For example, a liftable water pool may be provided in the hybrid box assembly wading performance test equipment 102, and an ice-water mixture may be provided in the water pool. Before the hybrid box assembly 103 enters the water, the hybrid box assembly 103 may be provided at a height of 2 cm above the water pool loaded with the ice-water mixture, and at this time, the hybrid box assembly 103 is not immersed in the water. Afterwards, the terminal 101 may control the water pool to rise at a preset rate until the hybrid box assembly 103 is immersed in the ice-water mixture according to the target immersion depth, thereby completing the immersion process of the hybrid box assembly 103.

[0066] In this embodiment, the hybrid box assembly 103 in working mode can be controlled to be immersed in water according to the target immersion depth by controlling the liftable water pool loaded with ice-water mixture to rise at a preset rate, and because the water used is an ice-water mixture, the reliability of the water wading performance test results can be further improved.

[0067] In one embodiment, step S201 may further include: setting the voltage of the hybrid box assembly 103 to the rated voltage of the hybrid box assembly 103, and sending a speed command to the hybrid box assembly; the speed command is used to instruct the motor in the hybrid box assembly 103 for driving the vehicle to operate according to the speed command, so that the hybrid box assembly 103 is in a working mode.

[0068] The speed command is a command for instructing the servo motor of the hybrid box assembly 103 to operate, and the servo motor can be used to drive the vehicle. Specifically, in order to simulate the actual working state of the hybrid box assembly 103, the terminal 101 first needs to set the voltage of the hybrid box assembly 103 to the rated voltage, and then send a speed command to the hybrid box assembly 103 to instruct the motor in the hybrid box assembly 103 used to drive the vehicle to operate according to the speed command, thereby simulating the hybrid box assembly 103 entering the working state. For example, after the hybrid box assembly 103 is connected to the low-voltage communication line, the speed command can be sent to the hybrid box assembly 103 through CAN communication, so that the motor of the hybrid box assembly 103 driving the vehicle to operate in the speed mode, ensuring that both ends of the output shaft of the same gear system run at 100r / min, simulating a vehicle speed of about 10km / h.

[0069] In this embodiment, the terminal 101 can control the motor in the hybrid box assembly 103 for driving the vehicle to operate according to the speed instruction by setting the voltage of the hybrid box assembly 103 to the rated voltage and sending a speed instruction to the hybrid box assembly 103. In this way, the working mode of the hybrid box can be simulated to further improve the accuracy of the water wading performance test.

[0070] In one embodiment, a method for testing the water resistance limit of a hybrid box assembly is also provided, which may specifically include the following process:

[0071] Consider keeping the hybrid box assembly hot and soaked at different ambient temperatures of 105℃, 85℃, and 65℃. When immersed, the lowest point of the assembly is 25%, 50%, and 75% of the total height of the assembly from the water surface. The water entry and exit angles of the hybrid box assembly remain consistent, and the water entry and exit angles are considered to be 27%, 15%, 10%, 5%, and 0% respectively. During the test, the coolant of the hybrid box assembly needs to be set to 23℃±2℃ and the flow rate is 10L / min.

[0072] Pretreatment: Install the pressure sensor on the connecting tooling at the position of the assembly vent plug. The connecting tooling uses the same specification thread as the original vent plug of the product. At the same time, use sealant to evenly cover the threaded connections of each tooling and tighten it with a torque wrench to ensure that the original vent plug function is not affected. Since lubricating oil will leak into the oil seal during operation at the differential output end of the hybrid case assembly, it is necessary to make a plug tooling to seal it. The tooling requirements and the matching requirements of the internal control of the differential output end must comply with the matching relationship between the original half-shaft hole and the half-shaft spline end. The tooling on the engine mounting surface should be able to achieve a sealed connection to ensure that no water leaks through the engine mounting end face when entering the water. The metal of the environmental chamber and all products involving high-voltage connection leakage risks should be well insulated and protected for personal safety to ensure personnel safety in the event of abnormalities during the test.

[0073] The testing process may include the following steps:

[0074] Step 1: Install the hybrid box assembly on the test bench, add the specified brand of lubricating oil and the amount of oil added should be set according to the product design parameters, connect the output half-shaft tooling, and monitor the pressure sensor value in the cavity.

[0075] Step 2, adjust the height of the automatic upper and lower ice water pools to the initial lowest position, and check that the water level in the pool is empty; connect the electronic control low voltage to check whether the CAN communication is normal, adjust the environmental chamber temperature to the target temperature 1, and wait for the CAN communication feedback oil temperature to be the target temperature ±1° to start the test.

[0076] Step 3, adjust the angle to pitch slope 1, set the high-voltage power supply to the rated voltage, connect the low-voltage communication line, and send a speed command to the hybrid box assembly through CAN communication, so that the motor of the hybrid box assembly drives the vehicle to work in the speed mode, ensure that both ends of the output shaft of the same gear system run at 100r / min, and simulate a vehicle speed of about 10km / h.

[0077] Step 4: The environmental chamber stops heating and injects a 0℃ ice-water mixture into the ice-water pool and circulates it to ensure that the water is always an ice-water mixture during the test, and the liquid level ensures that there is a 2cm height margin at the target immersion depth. At the same time, the upper and lower mechanisms of the ice-water pool rise at a certain rate, simulating the vehicle's entry into the water, and then rise to the target water depth and hold for one minute, and then adjust the pitch angle of the prototype to be horizontal.

[0078] Step 5: Keep the pressure for 15 minutes and record the pressure value in the hybrid box assembly cavity. If the pressure value changes abnormally or the leakage protection program is triggered, the test will be terminated immediately and the power will be turned off for protection.

[0079] Step 6: Stop the ice water from entering, drain the ice water pool, and lower the pool to its initial height. Stop the high-voltage power supply and low-voltage power supply, wait for the environmental chamber to return to room temperature, unpack and inspect the prototype, and conduct basic electrical performance tests such as insulation. If qualified, close the environmental chamber and continue to traverse all ambient temperatures, ice water surface heights, and hybrid box assembly water inlet and outlet angles.

[0080] The failure models of the product's wading performance are: transmission case joint surface leakage (sealant material or gluing process problems), uneven pressure between the electronic control and transmission case joint surfaces, seal failure under rapid hot and cold shocks, breather plug function failure, and differential left and right half-shaft oil seal failure when entering water. Internal water channel airtight failure. Each failure model can be compared and verified under a unified test scenario, and cavity pressure data can be collected to establish a failure model database. When developing extreme wading performance tests for new similar products, referring to the failure model can intelligently identify the failure location, facilitate rapid optimization design, and provide intelligent suggestions for improving product wading performance.

[0081] In the present embodiment, a method for testing the water wading performance of a hybrid box assembly is provided which does not require testing in a vehicle installation posture, and the method also effectively simulates the entire process of the hybrid box assembly pitching from entering water-maintaining-exiting water, thereby improving the test accuracy of the hybrid box assembly water wading performance test.

[0082] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0083] Based on the same inventive concept, the embodiment of the present application also provides a hybrid box assembly wading performance test device for implementing the hybrid box assembly wading performance test method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations of one or more hybrid box assembly wading performance test device embodiments provided below can refer to the limitations of the hybrid box assembly wading performance test method above, and will not be repeated here.

[0084] In one embodiment, as shown in FIG. 4 , a hybrid box assembly wading performance test device is provided, comprising: a working mode setting module 401, a hybrid box assembly immersion module 402 and a test result acquisition module 403, wherein:

[0085] The working mode setting module 401 is used to adjust the angle of the hybrid box assembly to a target pitch angle and control the hybrid box assembly to be in working mode when the ambient temperature of the hybrid box assembly to be tested reaches a target temperature;

[0086] The hybrid box assembly immersion module 402 is used to control the hybrid box assembly in the working mode to be immersed in water according to a target immersion depth, and after maintaining the first preset time, adjust the angle of the hybrid box assembly immersed in water to a horizontal angle;

[0087] The test result acquisition module 403 is used to obtain the wading performance test result of the hybrid case assembly matching the target temperature, the target pitch angle and the target immersion depth according to the pressure value in the cavity of the hybrid case assembly adjusted to a horizontal angle.

[0088] In one embodiment, the test result acquisition module 403 is further used to obtain the pressure value change rate of the hybrid case assembly adjusted to a horizontal angle in each time interval according to the pressure value in the cavity; when any of the pressure value change rates is greater than a preset change rate threshold, or the hybrid case assembly triggers an automatic leakage protection program, stop immersing the hybrid case assembly in water, and determine that the water wading performance test result is a failure of the water wading performance test; when the hybrid case assembly adjusted to a horizontal angle remains in water for a second preset time period, determine that the water wading performance test result is a pass of the water wading performance test; the second preset time period is greater than the first preset time period, and the second preset time period includes multiple time intervals.

[0089] In one embodiment, the hybrid case assembly water wading performance test device further includes: a fault category identification module, used to obtain a pressure value change curve of the cavity of the hybrid case assembly within a preset time interval; the interval length of the preset time interval is a third preset time length, and the interval end point of the preset time interval is the time point when the hybrid case assembly stops being immersed in water; the third preset time length is less than the second preset time length; based on the pressure value change curve of the cavity, the water wading performance failure category of the hybrid case assembly is obtained.

[0090] In one embodiment, the fault category identification module is further used to obtain the similarity between the cavity pressure value change curve and a plurality of pre-constructed candidate cavity pressure value change curves; the plurality of candidate cavity pressure value change curves correspond to different water wading performance failure categories respectively; the water wading performance failure category corresponding to the candidate cavity pressure value change curve with the greatest similarity is used as the water wading performance failure category of the hybrid box assembly.

[0091] In one embodiment, the water in which the hybrid box assembly is immersed is an ice-water mixture; the hybrid box assembly immersion module 402 is further used to control the hybrid box assembly in the working mode to be set above a water pool loaded with the ice-water mixture to ensure that the hybrid box assembly is not immersed in the ice-water mixture; and control the water pool to rise at a preset rate until the hybrid box assembly is immersed in the ice-water mixture according to the target immersion depth.

[0092] In one embodiment, the working mode setting module 401 is further used to set the voltage of the hybrid box assembly to the rated voltage of the hybrid box assembly and send a speed command to the hybrid box assembly; the speed command is used to instruct the motor in the hybrid box assembly for driving the vehicle to operate according to the speed command, so that the hybrid box assembly is in a working mode.

[0093] Each module in the hybrid gearbox assembly wading performance test device can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0094] In an exemplary embodiment, a computer device is provided, which may be a terminal 101, and its internal structure diagram may be shown in FIG5. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, the memory, and the input / output interface are connected via a system bus, and the communication interface, the display unit, and the input device are connected to the system bus via the input / output interface. 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 and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner may be implemented through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a method for testing the wading performance of a hybrid box assembly is implemented. The display unit of the computer device is used to form a visually visible picture, which may be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0095] Those skilled in the art will understand that the structure shown in FIG. 5 is merely a block diagram of a partial 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 shown in the figure, or combine certain components, or have a different arrangement of components.

[0096] In one embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.

[0097] In one embodiment, as shown in FIG6 , a hybrid box assembly water wading performance test system is also provided, the system comprising a computer device 601 as shown in FIG5 , and a hybrid box assembly water wading performance test device 602 communicatively connected to the computer device 601, wherein the hybrid box assembly water wading performance test device 602 may include an environmental chamber 602-1 for setting up a hybrid box assembly to be tested, a water pool 602-2 for loading an ice-water mixture, and a water tank 602-3 and an electronic water pump 602-4 for providing the ice-water mixture to the water pool 602-2, wherein the water pool 602-2 is arranged inside the environmental chamber 602-1, and the water tank 602-3 and the electronic water pump 602-4 are arranged outside the environmental chamber 602-1. When performing a water wading performance test, the hybrid box assembly to be tested may also be arranged inside the environmental chamber 602-1.

[0098] Among them, the environmental chamber 602-1 is provided with a heating device. When conducting the water wading performance test, since the hybrid box assembly is arranged inside the environmental chamber 602-1, the computer device 601 can change the temperature inside the environmental chamber 602-1 by controlling the heating device of the environmental chamber 602-1, that is, change the ambient temperature of the hybrid box assembly, so that the ambient temperature of the hybrid box assembly reaches the target temperature.

[0099] The water pool 602-2 may be provided with a lifting device for changing the height of the water pool 602-2. Before conducting the wading performance test, the hybrid box assembly to be tested may be set above the water pool 602-2. At this time, the hybrid box assembly is not immersed in the ice-water mixture. Then, the computer device 601 may control the water pool 602-2 to be raised and lowered so that the hybrid box assembly is immersed in the ice-water mixture according to the target immersion depth.

[0100] The water tank 602-3 and the electronic water pump 602-4 are arranged outside the environmental chamber 602-1 and can be connected to the water pool 602-2 through a pipeline. The water tank 602-3 can provide an ice-water mixture to the water pool 602-2 through the electronic water pump 602-4 to ensure that the water of the hybrid box assembly is always an ice-water mixture during the immersion process.

[0101] In the present embodiment, a hybrid transmission assembly water wading performance test system is also provided, which may include a computer device 601 for control, and a hybrid transmission assembly water wading performance test device 602 communicatively connected to the computer device. The hybrid transmission assembly water wading performance test device 602 may include an environmental chamber 602-1, a water pool 602-2, and a water tank 602-3 and an electronic water pump 602-4 for providing an ice-water mixture to the water pool 602-2. Through the hybrid transmission assembly water wading performance test system, a test device is provided that can be tested without being in the whole vehicle installation posture, thereby improving the test accuracy of the hybrid transmission assembly water wading performance test.

[0102] In one embodiment, a hybrid box assembly extreme wading performance test device is also provided, and the device may include the following components:

[0103] 1. The hardware level is mainly composed of mechanical components and electrical actuators. 1. The mechanical system is as follows: a. The entire transmission box rotates around the engine shaft, mainly consisting of a sample mounting plate, a connecting tooling plate, a gear rack structure, and a servo motor; b. The water tank moves up and down along the Z axis, consisting of a rectangular water tank, a lifting mechanical rod, a gear rack structure, and a servo motor; c. Environmental chamber: the environmental chamber body and auxiliary heating equipment. d. A water tank that provides an ice-water mixture and two electronic water pumps and corresponding pipelines. 2. The electrical system includes a high-voltage DC power supply that provides 350V high-voltage DC power to the transmission box product, a regulated DC power supply that provides 12V low-voltage power to the product, two servo motors and drivers, a water pump motor driver, an environmental chamber, a liquid cooling circulation system, buttons and sound and light alarms, and its I / O control points, and a central device Beckhoff PLC for the coordination of the underlying IO device and the driver industrial communication protocol.

[0104] 2. The bottom layer of the software mainly integrates all IO logic control with BECKHOFF's TwinCAT3 platform. The communication decoding and hardware resource integration of the servo drive are completed by it. The CAN communication control of the transmission box is mainly completed at the bottom layer of the PLC, which can complete the rapid emergency stop action response within 1 microsecond to ensure the safety of the test process.

[0105] 3. The software application layer is developed by Microsoft C# platform, including sample communication control module, PLC communication analysis module, and serial port communication module used for communication and control with industrial equipment such as water cooling equipment and environmental chamber equipment.

[0106] The above-mentioned hybrid box assembly extreme wading performance test device provides hardware support for a hybrid box assembly wading performance test method that does not require testing in a vehicle installation posture, thereby improving the test accuracy of the hybrid box assembly wading performance test.

[0107] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0108] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0109] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0110] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant 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 the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0111] 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 application.

[0112] The above-described 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 present application. 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 present application shall be subject to the attached claims.

Claims

1. A method for testing the wading performance of a hybrid gearbox assembly, characterized in that: The method comprises: When the ambient temperature of the hybrid case assembly to be tested reaches a target temperature, adjusting the angle of the hybrid case assembly to a target pitch angle, and controlling the hybrid case assembly to be in a working mode; Controlling the hybrid case assembly in the working mode to be immersed in water according to a target immersion depth, and adjusting the angle of the hybrid case assembly immersed in water to a horizontal angle after maintaining the first preset time; According to the pressure value in the cavity of the hybrid case assembly adjusted to a horizontal angle, a wading performance test result of the hybrid case assembly matching the target temperature, the target pitch angle, and the target immersion depth is obtained.

2. The method according to claim 1, characterized in that The step of obtaining the wading performance test result of the hybrid case assembly matching the target temperature, the target pitch angle, and the target immersion depth according to the pressure value in the cavity of the hybrid case assembly adjusted to a horizontal angle includes: According to the pressure value in the cavity, obtaining the pressure value change rate of the hybrid case assembly adjusted to a horizontal angle in each time interval; When the change rate of any of the pressure values ​​is greater than a preset change rate threshold, or the hybrid box assembly triggers an automatic leakage protection program, stopping immersing the hybrid box assembly in water, and determining that the water wading performance test result is a failure of the water wading performance test; When the hybrid box assembly adjusted to a horizontal angle remains in water for a second preset time, the water wading performance test result is determined to be passed; the second preset time is greater than the first preset time, and the second preset time includes multiple time intervals.

3. The method according to claim 2, characterized in that After determining that the water wading performance test result is a water wading performance test failure, the method further includes: Obtaining a pressure value variation curve of the cavity of the hybrid case assembly within a preset time interval; the interval length of the preset time interval is a third preset time length, and the interval end point of the preset time interval is the time point when the hybrid case assembly stops being immersed in water; the third preset time length is less than the second preset time length; According to the pressure value variation curve in the cavity, the water wading performance failure category of the hybrid box assembly is obtained.

4. The method according to claim 3, characterized in that The water wading performance failure category of the hybrid box assembly is obtained according to the pressure value change curve in the cavity, including: Obtaining the similarity between the cavity pressure value change curve and a plurality of pre-constructed candidate cavity pressure value change curves; the plurality of candidate cavity pressure value change curves respectively correspond to different wading performance failure categories; The water wading performance failure category corresponding to the candidate cavity pressure value change curve with the greatest similarity is used as the water wading performance failure category of the hybrid case assembly.

5. The method according to any one of claims 1 to 4, characterized in that: The water in which the hybrid box assembly is immersed is an ice-water mixture; before the hybrid box assembly in the working mode is immersed in water according to the target immersion depth, the control further includes: Controlling the hybrid box assembly in working mode to be disposed above a pool loaded with an ice-water mixture to ensure that the hybrid box assembly is not immersed in the ice-water mixture; The step of controlling the hybrid case assembly in the working mode to be immersed in water according to a target immersion depth includes: The water pool is controlled to rise at a preset rate until the hybrid box assembly is immersed in the ice-water mixture according to the target immersion depth.

6. The method according to claim 1, characterized in that The step of controlling the hybrid case assembly to be in a working mode includes: The voltage of the hybrid box assembly is set to the rated voltage of the hybrid box assembly, and a speed command is sent to the hybrid box assembly; the speed command is used to instruct the motor in the hybrid box assembly for driving the vehicle to operate according to the speed command, so that the hybrid box assembly is in a working mode.

7. A hybrid box assembly wading performance test device, characterized in that: The device comprises: A working mode setting module, used for adjusting the angle of the hybrid box assembly to be tested to a target pitch angle and controlling the hybrid box assembly to be in a working mode when the ambient temperature of the hybrid box assembly to be tested reaches a target temperature; A hybrid box assembly immersion module, used to control the hybrid box assembly in the working mode to be immersed in water according to a target immersion depth, and after maintaining the first preset time, adjust the angle of the hybrid box assembly immersed in water to a horizontal angle; The test result acquisition module is used to obtain the wading performance test result of the hybrid case assembly matching the target temperature, the target pitch angle and the target immersion depth according to the pressure value in the cavity of the hybrid case assembly adjusted to a horizontal angle.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A hybrid box assembly wading performance test system, characterized in that: include: The computer device as claimed in claim 8, and a hybrid box assembly water wading performance test device communicatively connected to the computer device; The hybrid box assembly wading performance test equipment includes: an environmental chamber for setting the hybrid box assembly to be tested, a water pool for loading ice-water mixture, and a water tank and an electronic water pump for providing the ice-water mixture to the water pool; wherein, The environmental chamber is provided with a heating device for controlling the environmental temperature of the hybrid box assembly; The water pool is provided with a lifting device for changing the height of the water pool so that the hybrid box assembly is immersed in the ice-water mixture; The water tank is connected to the water pool via a pipeline, and is used to provide the ice-water mixture to the water pool via the electronic water pump.

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 steps of the method according to any one of claims 1 to 6 are implemented.

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