Method, system and device for determining torque capacity of hybrid transmission clutch

Abstract

The present application relates to a method, system and device for determining the torque capacity of a hybrid case clutch, and relates to the field of vehicle technology. The method includes driving a structure in a dynamometer test bench to work, driving a structure in a hybrid case to work, and monitoring the working condition of the hybrid case; when it is monitored that the hybrid case is in a preset working mode, controlling the dynamometer test bench to be in a preset test condition, and transmitting a clutch engagement instruction to the hybrid case; monitoring the driving speed of a test bench driving motor and the load speed of a load motor module in the dynamometer test bench; when the driving speed and the load speed meet a preset matching condition, updating the torque value of the test bench driving motor based on a preset updating method, until the corresponding driving speed and load speed after the torque value is updated exceed the preset matching condition, determining the currently updated torque value as the target torque capacity of the clutch; and simulating various actual usage scenarios of the hybrid case clutch by the dynamometer test bench, thereby improving the accuracy of the detected clutch target torque capacity.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method, system and device for determining the torque capacity of a hybrid transmission clutch. Background Art

[0002] For a hybrid box equipped with a wet clutch, the specific conditions of the torque capacity of the clutch under different working conditions can provide more accurate data support for the direct drive mode control of the vehicle. However, in the related art, the torque capacity detection of the clutch is a single clutch performance test. This detection method does not take into account the hydraulic system capabilities of the actual application product, resulting in the torque capacity of the clutch detected, and the result is not accurate enough. Therefore, it is urgent to provide a method that can improve the detection accuracy of the torque capacity of the hybrid box clutch. Summary of the invention

[0003] Based on this, it is necessary to provide a method, system, device, computer equipment, computer-readable storage medium and computer program product for determining the torque capacity of a hybrid clutch, which can improve the detection accuracy of the torque capacity of the hybrid clutch, in order to address the above technical problems.

[0004] In a first aspect, the present application provides a method for determining the torque capacity of a hybrid case clutch, comprising:

[0005] Driving at least one structure in the dynamometer bench to work, driving at least one structure in the hybrid box to work, and monitoring the working condition of the hybrid box;

[0006] In the case where it is detected that the hybrid case is in a preset working mode, the dynamometer bench is controlled to be in a preset test condition, and a clutch engagement instruction is transmitted to the hybrid case; wherein the preset working mode includes at least one of a working state and a working temperature set in advance for at least one structure in the hybrid case based on a detection requirement for the torque capacity of the hybrid case clutch; and the preset test condition includes control of the working state of at least one structure in the dynamometer bench;

[0007] Monitoring the driving speed of the dynamometer test bench drive motor and the load speed of the load motor module in the dynamometer test bench; wherein the load motor module and the test bench drive motor are both connected to the hybrid box;

[0008] When the driving speed and the load speed meet the preset matching conditions, the torque value of the test bench drive motor is updated based on the preset update method, until the driving speed and the load speed corresponding to the updated torque value exceed the preset matching conditions, and the currently updated torque value is determined to be the target torque capacity of the clutch of the hybrid box; wherein the preset matching conditions include that the driving speed is equal to the product of the load speed of the load motor module and the product direct drive speed ratio of the hybrid box; and the preset update method includes at least one of a preset period and a preset increase.

[0009] In one embodiment, controlling the dynamometer stand to be in a preset test condition includes:

[0010] Control the load motor module in the dynamometer to the target speed;

[0011] and controlling the driving speed of the dynamometer dynamometer dynamometer drive motor to be the product of the target speed and the product direct drive speed ratio of the hybrid box;

[0012] The stage drive motor is controlled to be in a torque mode, and the torque value is an initial torque value.

[0013] In one embodiment, updating the torque value of the gantry drive motor based on a preset update method includes:

[0014] The torque value of the stage driving motor is gradually increased based on a preset period and a preset increment.

[0015] In one embodiment, after the drive speed and the load speed corresponding to the updated torque value exceed the preset matching condition, the method further includes:

[0016] The torque value of the stage drive motor is updated to an initial torque value and maintained until the torque value of the stage drive motor is updated next time based on the preset update method.

[0017] In one embodiment, before monitoring the working mode of the hybrid box, the method further includes:

[0018] Turning on the power module of the dynamometer bench to transmit driving power to the hybrid box;

[0019] Turning on the water cooling module of the dynamometer stand to transmit water conditions to the oil cooler of the hybrid box to control the oil temperature to a preset temperature; the water conditions include at least one of water flow velocity, water temperature and water flow rate;

[0020] And transmit an operating mode control signal to the hybrid box to control the hybrid box to be in the preset operating mode; the preset operating mode includes that the hybrid drive motor and the generator are both in the torque mode.

[0021] In one embodiment, after determining that the currently updated torque value is the target torque capacity of the clutch of the hybrid box, the method further includes:

[0022] The operating conditions of the dynamometer bench are updated to determine the target torque capacities corresponding to the clutch under a plurality of different operating conditions.

[0023] In one embodiment, updating the operating condition of the dynamometer bench includes at least one of the following:

[0024] updating the water condition transmitted by the water cooling module to the hybrid box to control the oil temperature of the oil cooler of the hybrid box to another preset temperature;

[0025] The preset driving mode of the stage driving motor is updated; the preset driving mode at least includes the driving speed of the stage driving motor.

[0026] In one embodiment, after monitoring the driving speed of the dynamometer rig driving motor and the load speed of the load motor module in the dynamometer rig, the method further includes:

[0027] Obtaining a first product of a load speed of the load motor module and a product direct drive speed ratio of the hybrid box;

[0028] When the difference between the driving speed of the stage driving motor and the first product is greater than the clutch engagement minimum slipping speed of the hybrid case clutch, transmission of the clutch engagement command to the hybrid case is stopped.

[0029] In a second aspect, the present application further provides a system for determining the torque capacity of a hybrid case clutch, comprising a hybrid case and a dynamometer bench;

[0030] The dynamometer bench includes a test device, a load motor module and a bench drive motor; the load motor module is connected to the differential in the hybrid box through a half shaft, and the bench drive motor is connected to the input shaft in the hybrid box;

[0031] The test device is used to drive at least one structure in the dynamometer bench to work, drive at least one structure in the hybrid box to work, and monitor the working condition of the hybrid box; when it is detected that the hybrid box is in a preset working mode, control the dynamometer bench to be in a preset test condition, and transmit a clutch engagement instruction to the hybrid box; monitor the driving speed of the bench drive motor and the load speed of the load motor module; when the driving speed and the load speed meet a preset matching condition, update the torque value of the bench drive motor based on a preset update method, until the driving speed and the load speed corresponding to the updated torque value exceed the preset matching condition, and determine that the currently updated torque value is the target torque capacity of the clutch of the hybrid box;

[0032] Among them, the preset working mode includes at least one of the working state and working temperature set in advance for at least one structure in the hybrid box based on the detection requirement of the torque capacity of the hybrid box clutch; the preset test condition includes the control of the working state of at least one structure in the dynamometer bench; the preset matching condition includes the driving speed being equal to the product of the load speed of the load motor module and the product direct drive speed ratio of the hybrid box; the preset update method includes at least one of a preset cycle and a preset increase.

[0033] In a third aspect, the present application further provides a device for determining the torque capacity of a hybrid case clutch, comprising:

[0034] A detection control module is used to drive at least one structure in the dynamometer test bench to work, drive at least one structure in the hybrid box to work, and monitor the working condition of the hybrid box; when it is detected that the hybrid box is in a preset working mode, the dynamometer test bench is controlled to be in a preset test condition, and a clutch engagement instruction is transmitted to the hybrid box; wherein the preset working mode includes at least one of a working state and a working temperature set in advance for at least one structure in the hybrid box based on the detection requirement for the torque capacity of the hybrid box clutch; the preset test condition includes the control of the working state of at least one structure in the dynamometer test bench;

[0035] A data acquisition module, used to monitor the driving speed of the dynamometer test bench drive motor and the load speed of the load motor module in the dynamometer test bench; wherein the load motor module and the test bench drive motor are both connected to the hybrid box;

[0036] A result output module is used to update the torque value of the test bench drive motor based on a preset update method when the drive speed and the load speed meet the preset matching conditions, until the drive speed and the load speed corresponding to the updated torque value exceed the preset matching conditions, and then determine that the currently updated torque value is the target torque capacity of the clutch of the hybrid box; wherein the preset matching conditions include that the drive speed is equal to the product of the load speed of the load motor module and the product direct drive speed ratio of the hybrid box; and the preset update method includes at least one of a preset period and a preset increase.

[0037] In a fourth aspect, the present application further provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps in the first aspect when executing the computer program.

[0038] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the steps in the first aspect when executed by a processor.

[0039] In a sixth aspect, the present application further provides a computer program product, comprising a computer program, which implements the steps in the first aspect when executed by a processor.

[0040] The present application provides a method, system, device, computer equipment, computer-readable storage medium and computer program product for determining the torque capacity of a hybrid case clutch. The method for determining the torque capacity of a hybrid case clutch drives at least one structure in a dynamometer test bench to work, drives at least one structure in a hybrid case to work, and monitors the working condition of the hybrid case; when it is detected that the hybrid case is in a preset working mode, controls the dynamometer test bench to be in a preset test condition, and transmits a clutch engagement instruction to the hybrid case; monitors the driving speed of a test bench drive motor in the dynamometer test bench, and the load speed of a load motor module in the dynamometer test bench; wherein the load motor module and the test bench drive motor are both connected to the hybrid case; at the driving speed When the preset matching conditions are met between the dynamometer test bench and the load speed, the torque value of the test bench drive motor is updated based on the preset update method, until the corresponding drive speed and load speed after the torque value is updated exceed the preset matching conditions, and the currently updated torque value is determined to be the target torque capacity of the hybrid box clutch. It can be seen that the present application realizes the simulation of the actual use scenario of the hybrid box clutch through the dynamometer test bench, and through the control and adjustment of the working conditions of the test bench, it can realize the detection of the clutch torque capacity under various different usage scenarios, which is conducive to improving the accuracy of the target torque capacity of the clutch finally detected, thereby providing more accurate data support for the direct drive mode control of the whole vehicle, which is conducive to improving the driving experience when the whole vehicle is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] 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.

[0042] Figure 1 A schematic diagram of a system for determining the torque capacity of a hybrid transmission clutch in one embodiment;

[0043] Figure 2 It is a schematic flow chart of a method for determining the torque capacity of a hybrid case clutch in one embodiment;

[0044] Figure 3 It is a schematic flow chart of a method for determining the torque capacity of a hybrid case clutch in another embodiment;

[0045] Figure 4 is a structural block diagram of a torque capacity determination device for a hybrid case clutch in one embodiment;

[0046] Figure 5 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0047] 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.

[0048] In the related technologies, the detection methods for the clutch are all clutch single-unit performance tests, which results in the torque capacity of the tested clutch not being able to represent the torque capacity of the hybrid box direct drive mode; the torque capacity is mainly affected by the hydraulic system and the friction coefficient of the friction plate and steel plate of the clutch, and the torque capacity of the tested clutch single unit does not take into account the hydraulic system capabilities of the actual application product.

[0049] Therefore, the present application proposes a direct-drive mode torque capacity test method for a hybrid box with a wet clutch, which comprehensively considers the actual hydraulic environment of the wet clutch, so that the test results are more in line with the actual torque capacity of the hybrid box equipped with the wet clutch, that is, it can improve the accuracy of the detected torque capacity of the clutch, thereby facilitating more accurate data support for the direct-drive mode control of the whole vehicle.

[0050] The method for determining the torque capacity of a hybrid case clutch provided in the present application is based on a test object of a hybrid case equipped with a wet clutch. The system pressure source required for the clutch engagement of the wet clutch is provided by a mechanical pump driven by the half-shaft output end.

[0051] The method for determining the torque capacity of a hybrid case clutch provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown, Figure 1 A system 100 for determining the torque capacity of a hybrid case clutch is provided, including a structure of a hybrid case 10 and a structure of a dynamometer test bench 20, and a connection relationship between the structure of the hybrid case 10 and the structure of the dynamometer test bench 20. Specifically, as Figure 1 As shown, the hybrid box 10 may include, for example, a clutch 11, a hybrid drive motor 12, a generator 13, a differential 14, an input shaft 15, a DC bus 16, a controller 17, and an oil cooler 18. The dynamometer bench 20 may include, for example, a first load motor, a second load motor, a bench drive motor 22, a high voltage power supply, a low voltage power supply, a first water cooling channel, and a second water cooling channel. The first load motor and the second load motor constitute a load motor module 21, the high voltage power supply and the low voltage power supply constitute a power module 24, and the first water cooling channel and the second water cooling channel constitute a water cooling module 23.

[0052] in, Figure 1 Also shown are some of the connection relationships between the architecture of the hybrid box 10 and the architecture of the dynamometer test bench 20, for example, the first water cooling channel is connected to the oil cooler 18, the second water cooling channel is connected to the controller 17, and the controller 17 is also connected to the low-voltage power supply, the DC bus 16 is connected to the high-voltage power supply, the input shaft 15 is connected to the test bench drive motor 22, and the first load motor and the second load motor are connected to the differential 14 via the half shaft 19.

[0053] in, Figure 1 The present application only provides a partial structure of the hybrid box 10, a partial structure of the dynamometer stand 20, and at least a partial connection relationship between the hybrid box 10 and the dynamometer stand 20. Figure 1 As the design limitation of the hybrid box 10 and the dynamometer stand 20; in actual use, the detailed structure and specific connection method of the hybrid box and the dynamometer stand can be adjusted according to needs.

[0054] in, Figure 1 The dynamometer bench 20 shown may further include a bench host computer (not shown). The method for determining the torque capacity of the hybrid box clutch provided in the present application can be automatically program-controlled by the bench host computer (test equipment), thereby automatically completing the torque capacity test of the entire oil temperature range and the entire speed range of the product, which is beneficial to improving the test efficiency and reducing the test cost.

[0055] Among them, the bench host computer (test equipment) can further communicate with the server through the network. The test equipment can be but not limited to various personal computers, laptops, smart phones, tablets and other devices. The server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides cloud computing services.

[0056] The method for determining the torque capacity of a hybrid case clutch provided in the present application controls the working condition of a dynamometer test bench 20 after the hybrid case 10 is in a preset working mode, so that the dynamometer test bench 20 is in a preset test working condition; and transmits a clutch 11 engagement instruction to the hybrid case 10; and then, when it is monitored that the driving speed of the test bench drive motor 22 and the load speed of the load motor module 21 meet the preset matching condition, the torque value of the test bench drive motor 22 is slowly updated based on a preset update method, until the driving speed and the load speed corresponding to the updated torque value exceed the preset matching condition, and the currently updated torque value is determined to be the target torque capacity of the hybrid case clutch 11; thereby, the detection of the torque capacity when the hybrid case 10 is in a preset working mode and the test bench drive motor 22 is in a preset driving mode based on the working condition of the dynamometer test bench 20 is realized, which is conducive to improving the accuracy of the target torque capacity of the clutch 11 finally detected.

[0057] In an exemplary embodiment, Figure 2 As shown, a method for determining the torque capacity of a hybrid case clutch is provided, and the method is applied to Figure 1 Taking the hybrid case clutch torque capacity determination system 100 as an example, the method may include the following steps: driving at least one structure in the dynamometer to work, driving at least one structure in the hybrid case to work, and monitoring the working condition of the hybrid case; and the following steps 201 to 203. Among them:

[0058] Step 201 , when it is detected that the hybrid box 10 is in a preset working mode, the dynamometer bench 20 is controlled to be in a preset test condition, and a clutch 11 engagement instruction is transmitted to the hybrid box 10 .

[0059] The hybrid box 10 is also called a dedicated hybrid transmission (DHT). The DHT is a hybrid drive that essentially uses electric drive to achieve its functions, such as adjusting the speed and torque of the internal combustion engine during the operation of the vehicle.

[0060] The dynamometer bench 20 is a test framework provided in the present application for simulating the actual application environment of the hybrid box 10 and realizing accurate detection of the torque capacity of the hybrid box clutch 11 under various application environments.

[0061] Among them, the preset working mode is a working mode set in advance based on the detection requirements for the torque capacity of the hybrid box clutch 11, and may include the working status and working temperature of some structures in the hybrid box 10.

[0062] The preset test condition is based on the control of the working state of at least some components in the dynamometer stand 20 .

[0063] For example, when the torque capacity of the hybrid case clutch 11 is to be tested, at least part of the structure of the hybrid case 10 can be connected to at least part of the structure of the dynamometer 20, so that when the dynamometer 20 is working, it can simulate the working conditions of the hybrid case 10 in different environments. The dynamometer 20 can be a three-dynamometer 20, and the hybrid case 10 can be installed on the three-dynamometer 20 according to the posture of the whole vehicle.

[0064] Exemplarily, before monitoring the working mode of the hybrid box 10, the hybrid box 10 can be installed on the dynamometer bench 20 based on the posture of the entire vehicle, and then the dynamometer bench 20 is controlled to work and the hybrid box 10 is driven to work through the host computer (test equipment) of the dynamometer bench 20.

[0065] That is, after the installation and connection between the hybrid case 10 and the dynamometer bench 20 are completed, at least part of the structure in the dynamometer bench 20 can be driven to start working, thereby driving at least part of the structure in the hybrid case 10 to start working, and the working condition of the hybrid case 10 can be monitored. When it is monitored that the working condition of the hybrid case 10 reaches the preset working mode, the working condition of the dynamometer bench 20 can be further regulated, and then the dynamometer bench 20 can be controlled to be in the preset test condition, and then the clutch 11 engagement command can be triggered to transmit the clutch 11 engagement command to the hybrid case 10, so as to drive the clutch 11 to run to the engaged state to achieve the engagement of the clutch 11.

[0066] Step 202 , monitoring the driving speed of the dynamometer rig drive motor 22 and the load speed of the load motor module 21 in the dynamometer rig 20 ; wherein the load motor module 21 and the dynamometer rig drive motor 22 are both connected to the hybrid box 10 .

[0067] The load motor module 21 may include one load motor, or multiple load motors may be provided based on demand, and the present application does not limit the number of load motors included in the load motor module 21. For example, the load motor module 21 may include two load motors for simulating two wheels.

[0068] Illustratively, after step 201 is executed, the driving speed of the test bench driving motor 22 and the load speed of the load motor module 21 can be monitored in real time, so as to monitor some conditions of the simulated environment of the hybrid box clutch 11.

[0069] Step 203, when the driving speed and the load speed meet the preset matching conditions, the torque value of the test bench drive motor 22 is updated based on the preset update method, until the driving speed and the load speed corresponding to the updated torque value exceed the preset matching conditions, and the currently updated torque value is determined to be the target torque capacity of the hybrid box clutch 11.

[0070] Wherein, when the load motor module 21 includes a plurality of load motors, the working conditions of the plurality of load motors may be synchronized, and the working states of the plurality of load motors are synchronized.

[0071] For example, in the process of monitoring the driving speed of the test bench drive motor 22, step 203 can be further performed to analyze the matching between the driving speed and the load speed of the load motor module 21. When the relationship between the driving speed and the load speed meets the preset matching condition, the torque value of the drive motor can be further slowly updated. Specifically, the torque value of the test bench drive motor 22 can be slowly updated by a preset updating method set in advance, until the relationship between the driving speed and the load speed corresponding to a certain updated torque value does not meet the preset matching condition provided originally, then the torque value of the drive motor updated at this time is used as the target torque capacity of the hybrid box clutch 11 detected this time. The target torque capacity is also the torque capacity of the hybrid box 10 under the preset working mode and the test bench drive motor 22 under the preset driving mode based on the current working condition of the dynamometer test bench 20. In other words, the simulated working environment corresponding to the target torque capacity is that the hybrid box 10 is in the preset working mode and the test bench drive motor 22 is in the preset driving mode.

[0072] The method for determining the torque capacity of the hybrid box clutch provided in the present application controls the dynamometer test bench 20 to be in a preset test condition when the hybrid box 10 is detected to be in a preset working mode, and transmits a clutch 11 engagement instruction to the hybrid box 10; monitors the driving speed of the test bench drive motor 22 in the dynamometer test bench 20, and the load speed of the load motor module 21 in the dynamometer test bench 20; wherein the load motor module 21 and the test bench drive motor 22 are both connected to the hybrid box 10; and when the driving speed and the load speed meet the preset matching condition, updates the torque of the test bench drive motor 22 based on the preset update method. value, until the driving speed and the load speed corresponding to the updated torque value exceed the preset matching conditions, the currently updated torque value is determined to be the target torque capacity of the clutch 11 of the hybrid box; it can be seen that the present application realizes the simulation of the actual use scenario of the hybrid box clutch through the dynamometer bench, and through the control and adjustment of the working conditions of the test machine bench, it can realize the detection of the clutch torque capacity under a variety of different usage scenarios, which is conducive to improving the accuracy of the target torque capacity of the clutch finally detected, thereby providing more accurate data support for the direct drive mode control of the whole vehicle, which is conducive to improving the driving experience when the whole vehicle is used.

[0073] It should also be added that the clutch 11 can be connected to a controller, and the transmission of the engagement instruction to the clutch 11 is realized based on the controller. The controller can be included in the bench host computer, or installed or simulated in the dynamometer bench 20.

[0074] In an exemplary embodiment, the control of the dynamometer stand 20 in the preset test condition performed in the above step 201 can be realized by executing steps 210 to 212, wherein:

[0075] Step 210, controlling the load motor module 21 in the dynamometer stand 20 to a target speed;

[0076] Step 211, and controlling the driving speed of the dynamometer dynamometer 20 to be the product of the target speed and the product direct drive speed ratio of the hybrid box 10;

[0077] Step 212 , the frame driving motor 22 is controlled to be in a torque mode, and the torque value is an initial torque value.

[0078] It can be seen that the present application provides a selectable preset driving mode of the gantry drive motor 22, including the load motor module 21 to the target speed, and the driving speed is equal to the product of the target speed of the load motor module 21 and the product direct drive speed ratio of the hybrid box 10, and the gantry drive motor 22 is in the torque mode, and the torque value of the gantry drive motor 22 is the initial torque value. Among them, the value of the initial torque value can be 0Nm (Newton meter).

[0079] The product direct drive speed ratio is a fixed value. When the structure in the hybrid box 10 is fixed, there is a corresponding fixed product direct drive speed ratio.

[0080] For example, in order to control the dynamometer test bench 20 to be in a preset driving mode, the load motor module 21 in the dynamometer test bench 20 can be first controlled to a target speed, and the target speed of the load motor module 21 can be obtained, and then the driving speed of the control stand drive motor 22 is controlled to be equal to the product of the target speed and the product direct drive speed ratio of the hybrid box 10. When the driving speed remains stable, the working mode of the stand drive motor 22 is adjusted to a torque mode, and the torque value is controlled to be an initial torque value. In this way, the stand drive motor 22 of the dynamometer test bench 20 is operated in the preset driving mode, and then combined with the subsequent steps, the torque capacity corresponding to the clutch 11 can be detected when the stand drive motor 22 is operated in the preset driving mode.

[0081] Based on this, by adjusting the driving mode of the driving motor, the torque capacity of the clutch 11 corresponding to different driving modes can be detected.

[0082] In an exemplary embodiment, the updating of the torque value of the gantry drive motor 22 based on a preset updating method in step 203 may be selectively performed as follows: gradually increasing the torque value of the gantry drive motor 22 based on a preset period and a preset increment.

[0083] For example, when the torque value of the drive motor is slowly updated, the torque value can be adjusted based on the pre-set update cycle and update increment. For example, when the pre-set update cycle is T and the update increment is H, then in the first cycle T, the updated torque value is H, in the second cycle T, the updated torque value is 2H, and in the third cycle T, the updated torque value is 3H. The present application does not specifically limit the values ​​of the update cycle T and the update increment H, and can be adaptively set based on demand.

[0084] Based on this, the torque value of the gantry drive motor 22 can be slowly increased based on the initial torque value by setting a preset cycle and preset increase in advance, so as to accurately find the value of the torque capacity corresponding to the clutch 11 at this time, thereby improving the accuracy of the torque capacity of the clutch 11 finally found.

[0085] In an exemplary embodiment, after the drive speed and load speed corresponding to the updated torque value executed in the above step 203 exceed the preset matching conditions, it also includes: updating the torque value of the gantry drive motor 22 to the initial torque value and maintaining it until the next time the torque value of the gantry drive motor 22 is updated based on the preset update method.

[0086] Exemplarily, when the test bench drive motor 22 slowly applies torque and reaches a state where the drive speed of the test bench drive motor 22 is not equal to the product of the load speed of the load motor module 21 and the direct drive speed ratio of the product, it means that the detection result of the torque capacity of the hybrid case clutch 11 has been found. Therefore, the torque value of the test bench drive motor 22 can be unloaded at this time, that is, the torque value of the test bench drive motor 22 is updated to the initial torque value and maintained, waiting for the next detection of the torque capacity of the hybrid case clutch 11, and then the test bench drive motor 22 is slowly applied with torque again. Therefore, after obtaining the detection result of the torque capacity of the hybrid case clutch 11, the torque value of the test bench drive motor 22 is updated to the initial torque value and maintained, which is conducive to facilitating the execution of the next detection process and ensuring the stable execution of the automatic detection of the torque capacity of the clutch 11 under various operating environments.

[0087] In an exemplary embodiment, before the above step 201 is executed to monitor the working mode of the hybrid box 10, the execution steps may include steps 213 to 215, wherein:

[0088] Step 213, turning on the power module 24 of the dynamometer stand 20 to transmit driving power to the hybrid box 10;

[0089] Step 214, turning on the water cooling module 23 of the dynamometer stand 20 to transmit water conditions for controlling the oil temperature to a preset temperature to the oil cooler 18 of the hybrid box 10; the water conditions include at least one of a water flow rate, a water temperature, and a water flow rate;

[0090] In step 215 , a working mode control signal is transmitted to the hybrid box 10 to control the hybrid box 10 to be in a preset working mode; the preset working mode includes that the hybrid drive motor 12 and the generator 13 are both in a torque mode.

[0091] For example, after the hybrid box 10 and the dynamometer rack 20 are installed and connected, at least part of the structures in the dynamometer rack 20 can be driven to start working, thereby driving at least part of the structures in the hybrid box 10 to start working; for example, the power module 24 of the dynamometer rack 20 can be turned on, so that the low-voltage power supply included in the power module 24 can provide power to the controller 17 and other structures in the hybrid box 10, and the high-voltage power supply included in the power module 24 can provide power to the DC bus 16 and other structures in the hybrid box 10. The architecture provides electrical energy; and, by turning on the water cooling module 23, the first water cooling channel in the water cooling module 23 can transmit water to the oil cooler 18 in the hybrid box 10, and the second water cooling channel in the water cooling module 23 can transmit water to the controller 17 in the hybrid box 10; and, by transmitting an operating mode control signal to the hybrid box 10, the hybrid box 10 can be controlled to be in a preset operating mode, specifically, the hybrid drive motor 12 and the generator 13 of the hybrid box 10 are controlled to be in a torque mode.

[0092] By executing step 213 to step 215, the preliminary preparation work required for a detection process of the torque capacity of the clutch 11 can be achieved, which is conducive to ensuring the smooth execution of the torque capacity detection of the clutch 11.

[0093] In an exemplary embodiment, after step 203 is completed, step 204 may be further performed, wherein:

[0094] Step 204 , updating the working condition of the dynamometer 20 to determine the target torque capacities corresponding to the clutch 11 under various working conditions.

[0095] Exemplarily, the working condition of the dynamometer bench 20 can be adjusted, for example, the driving speed of the bench drive motor 22 can be adjusted, for example, the water condition of the water cooling module can be adjusted, and then after the working condition of the dynamometer bench 20 is adjusted, the detection steps related to the above-mentioned steps 201 to 203 are further performed to realize the detection of the target torque capacity corresponding to the clutch 11 under a variety of different working conditions.

[0096] The updating of the working condition of the dynamometer test bench 20 performed in the above step 204 includes at least one of the following: updating the water condition transmitted from the water cooling module 23 to the hybrid box 10 to control the oil temperature of the oil cooler 18 of the hybrid box 10 to another preset temperature;

[0097] The preset driving mode of the test bench drive motor 22 is updated to detect the target torque capacity of the hybrid case clutch 11 corresponding to the test bench drive motor 22 in different driving modes; the preset driving mode at least includes the driving speed of the test bench drive motor 22 .

[0098] Exemplarily, the preset working mode of the hybrid box 10 also includes the oil temperature of the oil cooler 18; therefore, in a detection process of detecting the torque capacity of the hybrid box clutch 11, the torque capacity detection of the clutch 11 is realized when the hybrid box 10 is in a preset working mode (for example, a certain oil temperature) and the bench drive motor 22 is in a preset drive mode. Therefore, after the execution of a detection process, the water condition transmitted by the water cooling module 23 to the hybrid box 10 can be updated by adjusting and updating the water cooling module 23 in the dynamometer bench 20, specifically including updating at least one of the water flow rate, water temperature and water flow rate, so as to realize another adjustment of the oil temperature of the oil cooler 18 of the hybrid box 10, so as to realize the torque capacity detection of the clutch 11 when the hybrid box 10 is in another preset working mode and the bench drive motor 22 is in a preset drive mode.

[0099] Specifically, the oil temperature of the oil cooler 18 of the hybrid box 10 can be adjusted by adjusting the water condition transmitted from the water cooling module 23 to the hybrid box 10 .

[0100] After each adjustment of the oil temperature of the oil cooler 18, the steps related to the method for determining the torque capacity of the hybrid box clutch are executed again, so that the torque capacity of multiple clutches 11 can be detected when the hybrid box 10 is in different preset working modes and the test bench drive motor 22 is in the preset drive mode.

[0101] For example, in one detection process of detecting the torque capacity of the hybrid case clutch 11, the torque capacity of the clutch 11 is detected when the hybrid case 10 is in a preset working mode and the test bench drive motor 22 is in a preset driving mode. Therefore, after one detection process is completed, by adjusting the preset driving mode of the test bench drive motor 22 and performing the steps related to the method for determining the torque capacity of the hybrid case clutch again after each adjustment, the torque capacity of multiple clutches 11 can be detected when the hybrid case 10 is in a preset working mode and the test bench drive motor 22 is in different preset driving modes.

[0102] An optional implementation is provided, in which when the preset driving mode of the stage driving motor 22 is adjusted, at least the driving speed of the stage driving motor 22 is adjusted.

[0103] In an exemplary embodiment, in the above step 201, the driving speed and the load speed of the load motor module 21 meet the preset matching condition, including: the driving speed is equal to the product of the load speed of the load motor module 21 and the product direct drive speed ratio of the hybrid box 10. It can be seen that the present application provides an optional preset matching condition that the driving speed of the test bench drive motor 22 is equal to the product of the load speed of the load motor module 21 and the product direct drive speed ratio of the hybrid box 10.

[0104] In an exemplary embodiment, after executing the above-mentioned step 202 of monitoring the driving speed of the test bench drive motor 22 in the dynamometer test bench 20 and the load speed of the load motor module 21 in the dynamometer test bench 20, it also includes: obtaining the first product of the load speed of the load motor module 21 and the product direct drive speed ratio of the hybrid box 10; when the difference between the driving speed of the test bench drive motor 22 and the first product is greater than the minimum slip speed of the clutch 11 of the hybrid box clutch 11, stopping transmitting the clutch 11 engagement command to the hybrid box 10.

[0105] Exemplarily, the first product of the load speed of the load motor module 21 and the product direct drive speed ratio of the hybrid box 10 is first obtained, and then the difference between the drive speed of the test bench drive motor 22 and the first product is calculated. When the difference is greater than the minimum slip speed of the clutch 11, the clutch 11 no longer triggers the engagement command, and the transmission of the clutch 11 engagement command to the hybrid box 10 can be stopped.

[0106] For the method for determining the torque capacity of the hybrid case clutch provided in the present application, an optional implementation is also provided, specifically including:

[0107] First, the hybrid box 10 is installed on the three-dynamometer test bench 20 according to the whole vehicle posture. The input shaft 15 of the hybrid box 10 is connected to the drive motor (test bench drive motor 22) of the three-dynamometer test bench 20, and the output end of the differential 14 of the hybrid box 10 is connected to the two load motors of the three-dynamometer test bench 20 through the half shaft 19. The DC bus 16 of the hybrid box 10 is connected to the test bench high-voltage power supply, and the low-voltage interfaces such as the controller 17 are connected to the low-voltage power supply. The oil cooler 18 and the controller 17 are respectively connected to water and connected to the first water cooling channel and the second water cooling channel respectively.

[0108] The hybrid box 10 is fed with the low pressure and high pressure specified by the product, and the oil cooler 18 water cooling unit is controlled to control the oil temperature at T1. The drive motor (hybrid drive motor 12) and the generator 13 of the hybrid box 10 are set in the torque mode, and the control rack load speed is controlled to the target speed n1. Then the speed of the rack drive motor 22 is set to n1×k, where k is the product direct drive speed ratio. After the speed stabilizes, the rack drive motor 22 is switched to the torque mode, and the initial torque value (for example, 0 Nm) is controlled, and the clutch 11 engagement command is triggered at the same time.

[0109] After the test bench drive motor 22 switches to the torque mode, it is determined whether the difference between the speed of the test bench drive motor 22 and the speed of the load motor × k is less than the minimum slip friction speed of the clutch 11 engagement specified by the product. If the difference is greater than the minimum slip friction speed of the clutch 11 engagement, the clutch 11 will no longer trigger the engagement command, and the disconnection command can be transmitted to the clutch 11 through the test bench host computer of the dynamometer test bench 20. Among them, "×" means the multiplication operator.

[0110] When the judgment result is that the rotational speed of the bench drive motor 22 is equal to the rotational speed of the load motor × k, the bench drive motor 22 slowly applies torque (torque value). When the rotational speed of the bench drive motor 22 is not equal to the rotational speed of the load motor × k, the unloading torque is the initial torque value, and this torque (torque value) is recorded as the torque capacity of the clutch 11.

[0111] Then, the bench load motor can be further controlled to drive the engine (bench drive motor 22) to rise to the next target rotational speed, and the torque capacity is tested again until all rotational speed conditions are tested.

[0112] After all the target rotational speed torque capacity tests are completed, the oil cooler 18 water cooling unit is adjusted to the next target temperature T2. After judging that the oil temperature has reached, the torque capacity test is started again.

[0113] The method for determining the torque capacity of the hybrid box clutch provided in this application takes into account the actual use environment of the clutch 11 with the help of the three-dynamometer bench 20, making the test data more accurate; the execution of relevant methods can be automatically controlled by the bench host computer program to complete the torque capacity test of the full oil temperature range and the full rotational speed range of the product, which is beneficial to improving the test efficiency and reducing the test cost.

[0114] For the method for determining the torque capacity of the hybrid box clutch provided in this application, an embodiment as Figure 3 shown is also provided, including:

[0115] Install the sample; that is, install the hybrid box on the dynamometer bench based on the vehicle attitude;

[0116] The water cooling module is filled with water; among them, the first water cooling channel is filled with water to control the oil outlet temperature of the oil cooler so that the oil outlet temperature can reach the preset T1, T2, etc., and the second water cooling channel is filled with water to control the controller temperature so that the water temperature and flow rate of the controller can reach the preset conditions;

[0117] Judge whether the given rotational speed of the load motor and the given rotational speed of the drive motor reach the preset matching condition (N2 = N1 × k); if not, re-judge;

[0118] When the preset matching condition is reached, the drive motor is adjusted to the torque mode, and the given torque value is the initial torque value; for example, if N2 - N1 × k is not between -50 and 50, re-judge;

[0119] For example, if -50 < N2 - N1 × k < 50, then give the clutch engagement command;

[0120] In the case of N2 = N1 × k, the drive motor torque is slowly given to the target value; otherwise, re-judge;

[0121] In the case of N2>N1×k, the current torque is recorded as the torque capacity of the clutch, and the clutch pressure is recorded simultaneously; otherwise, re-judge;

[0122] The drive motor unloads the torque; then, the next speed point test is performed, that is, the given speed of the load motor is adjusted; when all speed point tests are completed, the next oil temperature test is performed, that is, the water flow in the first water cooling channel is adjusted to adjust the oil temperature;

[0123] After all tests are completed, the drive motor and the load motor are shut down.

[0124] 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.

[0125] Based on the same inventive concept, the embodiment of the present application also provides a torque capacity determination system 100 for a hybrid transmission clutch, such as Figure 1 As shown, the hybrid case 10 and the dynamometer bench 20 are included; the dynamometer bench 20 includes a test device, a load motor module 21 and a bench drive motor 22; the load motor module 21 is connected to the differential 14 in the hybrid case 10 through the half shaft 19, and the bench drive motor 22 is connected to the input shaft 15 in the hybrid case 10; the test device is used to drive at least one structure in the dynamometer bench 20 to work, drive at least one structure in the hybrid case 10 to work, and monitor the working condition of the hybrid case 10; when the hybrid case 10 is detected to be in a preset working state, the test device is used to drive at least one structure in the dynamometer bench 20 to work, drive at least one structure in the hybrid case 10 to work, and monitor the working condition of the hybrid case 10; when the hybrid case 10 is detected to be in a preset working state, the test device is used to drive at least one structure in the dynamometer bench 20 to work, drive at least one structure in the hybrid case 10 to work, and monitor the working condition of the hybrid case 10; when the test device is used to drive at least one structure in the dynamometer bench 20 to work, the test device is used to drive at least one structure in the hybrid case 10 to work, drive at least one structure in the hybrid case 10 to work, and monitor the working condition of the hybrid case 10; when the test device is used to drive at least one structure in the hybrid case 1 ... In the test mode, the dynamometer test bench 20 is controlled to be in a preset test condition, and the clutch 11 engagement command is transmitted to the hybrid box 10; the driving speed of the test bench drive motor 22 and the load speed of the load motor module 21 are monitored; when the driving speed and the load speed meet the preset matching conditions, the torque value of the test bench drive motor 22 is updated based on the preset update method, until the driving speed and the load speed corresponding to the updated torque value exceed the preset matching conditions, and the currently updated torque value is determined to be the target torque capacity of the hybrid box clutch 11.

[0126] Based on the same inventive concept, the embodiment of the present application further provides a hybrid case clutch torque capacity determination device for implementing the hybrid case clutch torque capacity determination 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 case clutch torque capacity determination device embodiments provided below can refer to the limitations of the hybrid case clutch torque capacity determination method above, and will not be repeated here.

[0127] In an exemplary embodiment, Figure 4 As shown, a hybrid case clutch torque capacity determination device 40 is provided, comprising: a detection control module 41, a data acquisition module 42 and a result output module 43, wherein:

[0128] The detection control module 41 is used to drive at least one structure in the dynamometer test bench to work, drive at least one structure in the hybrid box to work, and monitor the working condition of the hybrid box; when it is detected that the hybrid box is in a preset working mode, the dynamometer test bench is controlled to be in a preset test condition, and a clutch engagement instruction is transmitted to the hybrid box; wherein the preset working mode includes at least one of a working state and a working temperature set in advance for at least one structure in the hybrid box based on the detection requirement for the torque capacity of the hybrid box clutch; the preset test condition includes the control of the working state of at least one structure in the dynamometer test bench;

[0129] The data acquisition module 42 is used to monitor the driving speed of the test bench driving motor in the dynamometer test bench and the load speed of the load motor module in the dynamometer test bench; wherein the load motor module and the test bench driving motor are both connected to the hybrid box;

[0130] The result output module 43 is used to update the torque value of the test bench drive motor based on a preset update method when the drive speed and the load speed meet the preset matching conditions, until the drive speed and the load speed corresponding to the updated torque value exceed the preset matching conditions, and determine that the currently updated torque value is the target torque capacity of the clutch of the hybrid box; wherein the preset matching conditions include that the drive speed is equal to the product of the load speed of the load motor module and the product direct drive speed ratio of the hybrid box; and the preset update method includes at least one of a preset period and a preset increase.

[0131] In an exemplary embodiment, the detection control module 41 is used to control the dynamometer test bench to be in a preset test condition, specifically for: controlling the load motor module in the dynamometer test bench to a target speed; and controlling the driving speed of the test bench drive motor in the dynamometer test bench, which is the product of the target speed and the product direct drive speed ratio of the hybrid box; and controlling the test bench drive motor to be in a torque mode, and the torque value is the initial torque value.

[0132] In an exemplary embodiment, the result output module 43 is used to update the torque value of the gantry drive motor based on a preset update method, specifically to gradually increase the torque value of the gantry drive motor based on a preset cycle and a preset increase.

[0133] In an exemplary embodiment, the result output module 43 is used to update the torque value of the gantry drive motor to the initial torque value and maintain it after the corresponding driving speed and load speed after the torque value is updated exceed the preset matching conditions until the next time the torque value of the gantry drive motor is updated based on the preset update method.

[0134] In an exemplary embodiment, the detection control module 41 is used to turn on the power module of the dynamometer test bench before monitoring the working mode of the hybrid box to transmit driving power to the hybrid box; turn on the water cooling module of the dynamometer test bench to transmit water conditions to the oil cooler of the hybrid box to control the oil temperature to a preset temperature; the water conditions include at least one of water flow rate, water temperature and water flow rate; and transmit a working mode control signal to the hybrid box to control the hybrid box to be in a preset working mode; the preset working mode includes both the hybrid drive motor and the generator being in a torque mode.

[0135] In an exemplary embodiment, the detection control module 41 is also used to update the operating conditions of the dynamometer test bench after the result output module 43 determines that the currently updated torque value is the target torque capacity of the clutch of the hybrid box, so as to determine the target torque capacity corresponding to the clutch under a variety of different operating conditions.

[0136] In an exemplary embodiment, the detection control module 41 is used to update the operating condition of the dynamometer test bench, specifically at least one of the following: used to update the water condition transmitted from the water cooling module to the hybrid box to control the oil temperature of the oil cooler of the hybrid box to another preset temperature; used to update the preset drive mode of the test bench drive motor; the preset drive mode at least includes the drive speed of the test bench drive motor.

[0137] In an exemplary embodiment, after the data acquisition module 42 is used to monitor the driving speed of the test bench drive motor and the load speed of the load motor module in the dynamometer test bench, the result output module 43 is called to obtain the first product of the load speed of the load motor module and the product direct drive speed ratio of the hybrid box; when the difference between the driving speed of the test bench drive motor and the first product is greater than the minimum slip speed of the hybrid box clutch for clutch engagement, the transmission of the clutch engagement command to the hybrid box is stopped.

[0138] Each module in the above-mentioned hybrid gearbox clutch torque capacity determination 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.

[0139] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal (test device), and its internal structure diagram may be as shown in FIG. Figure 5 As shown. The computer device 50 includes a processor 51, a memory 52, an input / output interface 53, a communication interface 54, a display unit 55 and an input device 56. The processor 51, the memory 52 and the input / output interface 53 are connected via a system bus 57, and the communication interface 54, the display unit 55 and the input device 56 are connected to the system bus 57 via the input / output interface 53. The processor 51 of the computer device 50 is used to provide computing and control capabilities. The memory 52 of the computer device 50 includes a non-volatile storage medium 521 and an internal memory 522. The non-volatile storage medium 521 stores an operating system 5211 and a computer program 5212. The internal memory 522 provides an environment for the operation of the operating system 5211 and the computer program 5212 in the non-volatile storage medium 521. The input / output interface 53 of the computer device 50 is used to exchange information between the processor 51 and an external device. The communication interface 54 of the computer device 50 is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can 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 determining the torque capacity of a hybrid transmission clutch is implemented.

[0140] Those skilled in the art will understand that Figure 5 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0141] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the method for determining the torque capacity of a hybrid transmission clutch when executing the computer program.

[0142] 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 method for determining the torque capacity of a hybrid transmission clutch are implemented.

[0143] In one embodiment, a computer program product is provided, comprising a computer program, which implements the steps in the method for determining the torque capacity of a hybrid transmission clutch when the computer program is executed by a processor.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] 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 determining the torque capacity of a hybrid transmission clutch, characterized in that: The method comprises: Driving at least one structure in the dynamometer bench to work, driving at least one structure in the hybrid box to work, and monitoring the working condition of the hybrid box; In the case where it is detected that the hybrid case is in a preset working mode, the dynamometer bench is controlled to be in a preset test condition, and a clutch engagement instruction is transmitted to the hybrid case; wherein the preset working mode includes at least one of a working state and a working temperature set in advance for at least one structure in the hybrid case based on a detection requirement for the torque capacity of the hybrid case clutch; and the preset test condition includes control of the working state of at least one structure in the dynamometer bench; Monitoring the driving speed of the dynamometer test bench drive motor and the load speed of the load motor module in the dynamometer test bench; wherein the load motor module and the test bench drive motor are both connected to the hybrid box; When the driving speed and the load speed meet the preset matching conditions, the torque value of the test bench drive motor is updated based on the preset update method, until the driving speed and the load speed corresponding to the updated torque value exceed the preset matching conditions, and the currently updated torque value is determined to be the target torque capacity of the clutch of the hybrid box; wherein the preset matching conditions include that the driving speed is equal to the product of the load speed of the load motor module and the product direct drive speed ratio of the hybrid box; and the preset update method includes at least one of a preset period and a preset increase.

2. The method according to claim 1, characterized in that: Control the dynamometer to the preset test conditions, including: Control the load motor module in the dynamometer to the target speed; and controlling the driving speed of the dynamometer dynamometer dynamometer drive motor to be the product of the target speed and the product direct drive speed ratio of the hybrid box; The stage drive motor is controlled to be in a torque mode, and the torque value is an initial torque value.

3. The method according to claim 2, characterized in that Updating the torque value of the stage drive motor based on a preset update method includes: The torque value of the stage driving motor is gradually increased based on a preset period and a preset increment.

4. The method according to claim 2, characterized in that: After the drive speed and the load speed corresponding to the updated torque value exceed the preset matching condition, the method further includes: The torque value of the stage drive motor is updated to an initial torque value and maintained until the torque value of the stage drive motor is updated next time based on the preset update method.

5. The method according to claim 1, characterized in that: Before monitoring the working mode of the hybrid box, the method further includes: Turning on the power module of the dynamometer bench to transmit driving power to the hybrid box; Turning on the water cooling module of the dynamometer stand to transmit water conditions to the oil cooler of the hybrid box to control the oil temperature to a preset temperature; the water conditions include at least one of water flow velocity, water temperature and water flow rate; And transmit an operating mode control signal to the hybrid box to control the hybrid box to be in the preset operating mode; the preset operating mode includes that the hybrid drive motor and the generator are both in the torque mode.

6. The method according to claim 5, characterized in that After determining that the currently updated torque value is the target torque capacity of the clutch of the hybrid box, the method further includes: The operating conditions of the dynamometer bench are updated to determine the target torque capacities corresponding to the clutch under a plurality of different operating conditions.

7. The method according to claim 6, characterized in that Updating the working condition of the dynamometer bench includes at least one of the following: updating the water condition transmitted by the water cooling module to the hybrid box to control the oil temperature of the oil cooler of the hybrid box to another preset temperature; Updating a preset driving mode of the stage driving motor; The preset driving mode includes at least the driving speed of the stage driving motor.

8. The method according to claim 1, characterized in that After monitoring the driving speed of the dynamometer rig driving motor and the load speed of the load motor module in the dynamometer rig, the method further includes: Obtaining a first product of a load speed of the load motor module and a product direct drive speed ratio of the hybrid box; When the difference between the driving speed of the stage driving motor and the first product is greater than the clutch engagement minimum slipping speed of the hybrid case clutch, transmission of the clutch engagement command to the hybrid case is stopped.

9. A system for determining the torque capacity of a hybrid transmission clutch, characterized in that: Including hybrid box and dynamometer bench; The dynamometer bench includes a test device, a load motor module and a bench drive motor; the load motor module is connected to the differential in the hybrid box through a half shaft, and the bench drive motor is connected to the input shaft in the hybrid box; The test device is used to drive at least one structure in the dynamometer bench to work, drive at least one structure in the hybrid box to work, and monitor the working condition of the hybrid box; when it is detected that the hybrid box is in a preset working mode, control the dynamometer bench to be in a preset test condition, and transmit a clutch engagement instruction to the hybrid box; monitor the driving speed of the bench drive motor and the load speed of the load motor module; when the driving speed and the load speed meet a preset matching condition, update the torque value of the bench drive motor based on a preset update method, until the driving speed and the load speed corresponding to the updated torque value exceed the preset matching condition, and determine that the currently updated torque value is the target torque capacity of the clutch of the hybrid box; Among them, the preset working mode includes at least one of the working state and working temperature set in advance for at least one structure in the hybrid box based on the detection requirement of the torque capacity of the hybrid box clutch; the preset test condition includes the control of the working state of at least one structure in the dynamometer bench; the preset matching condition includes the driving speed being equal to the product of the load speed of the load motor module and the product direct drive speed ratio of the hybrid box; the preset update method includes at least one of a preset cycle and a preset increase.

10. A device for determining the torque capacity of a hybrid transmission clutch, characterized in that: The device comprises: A detection control module is used to drive at least one structure in the dynamometer test bench to work, drive at least one structure in the hybrid box to work, and monitor the working condition of the hybrid box; when it is detected that the hybrid box is in a preset working mode, the dynamometer test bench is controlled to be in a preset test condition, and a clutch engagement instruction is transmitted to the hybrid box; wherein the preset working mode includes at least one of a working state and a working temperature set in advance for at least one structure in the hybrid box based on the detection requirement for the torque capacity of the hybrid box clutch; the preset test condition includes the control of the working state of at least one structure in the dynamometer test bench; A data acquisition module, used to monitor the driving speed of the dynamometer test bench drive motor and the load speed of the load motor module in the dynamometer test bench; wherein the load motor module and the test bench drive motor are both connected to the hybrid box; A result output module is used to update the torque value of the test bench drive motor based on a preset update method when the drive speed and the load speed meet the preset matching conditions, until the drive speed and the load speed corresponding to the updated torque value exceed the preset matching conditions, and then determine that the currently updated torque value is the target torque capacity of the clutch of the hybrid box; wherein the preset matching conditions include that the drive speed is equal to the product of the load speed of the load motor module and the product direct drive speed ratio of the hybrid box; and the preset update method includes at least one of a preset period and a preset increase.

Images