Electric drive assembly lubrication test device and test method

Abstract

The invention relates to an electric drive assembly lubrication test device and method, and the device comprises a supporting mechanism which is used for fixing to-be-detected samples of different types; the driving system is used for power transmission of different types of samples to be detected, the driving system comprises a driving device I and a driving device II, and the driving device I and the driving device II are coaxially arranged and are both mounted on the supporting mechanism; and the supporting mechanism is fixed to the turnover mechanism, and the turnover mechanism is used for adjusting the turnover angle of the supporting mechanism. According to the improved electric drive assembly lubrication test device, through the synergistic effect of the supporting mechanism, the driving system and the turnover mechanism, comprehensive verification of the lubrication performance of the electric drive assembly under complex working conditions is achieved, the test accuracy, environmental adaptability and efficiency are improved, and powerful support is provided for development and optimization of the new energy automobile electric drive assembly.

Description

Technical Field

[0001] This application relates to the field of lubrication tests for electric drive assemblies, and particularly to an electric drive assembly lubrication test device and a test method. Background Art

[0002] With the rapid development of new energy vehicles, the input speed of electric drive products has been continuously increasing, and at the same time, stronger environmental adaptability is required. This has made the test verification standards for lubrication performance increasingly strict. Lubrication directly affects the performance and service life of the electric drive assembly of new energy passenger vehicles. Therefore, in the product development stage, it is necessary to verify the lubrication conditions of components such as bearings, oil seals, and gears at the limit angle (up to 45°) and under the worst oil agitation conditions, as well as the performance of the breather plug and the oil guiding effect of the oil guiding mechanism and parts, in order to shorten the development cycle.

[0003] In related technologies, existing lubrication test devices, such as the upper and lower layer platform structure, multi-link support structure, or frame structure, have obvious limitations. The structural forms of these devices are relatively single and it is difficult to adapt to more complex working condition requirements. Summary of the Invention

[0004] This application provides an electric drive assembly lubrication test device and a test method, which can solve the technical problem that the structural form of traditional lubrication test devices is relatively single and it is difficult to adapt to more complex working condition requirements.

[0005] In a first aspect, an embodiment of this application provides an electric drive assembly lubrication test device, which includes:

[0006] A support mechanism for fixing different types of samples to be detected;

[0007] A drive system for power transmission of different types of samples to be detected. The drive system includes a first drive device and a second drive device. The first drive device and the second drive device are coaxially arranged and are both installed on the support mechanism;

[0008] A flipping mechanism. The support mechanism is fixed to the flipping mechanism, and the flipping mechanism is used to adjust the flipping angle of the support mechanism.

[0009] In combination with the first aspect, in an embodiment, the support mechanism includes:

[0010] Two coaxially arranged support seats. The support seats are provided with through holes, and an adjusting flange is installed in the through holes;

[0011] The first drive device is installed on one of the support seats, and the second drive device is installed on the other support seat;

[0012] Both of the two support seats are fixed to the flipping mechanism.

[0013] In combination with the first aspect, in one embodiment, the support mechanism further includes:

[0014] A fixed bracket, which is fixed between the two adjusting flanges;

[0015] The drive system further includes a third drive device, which is used to be installed on a sample of a hybrid transmission.

[0016] In combination with the first aspect, in one embodiment, the flipping mechanism includes a first-direction flipping drive device;

[0017] The first-direction flipping drive device includes:

[0018] An asynchronous motor I, which is installed on the support base. The output end of the asynchronous motor I is connected with a first reducer, and a first driving gear is sleeved on the output end of the first reducer;

[0019] A first driven sector gear, which is coaxially fixed to the end face of the adjusting flange and meshes with the first driving gear.

[0020] In combination with the first aspect, in one embodiment, the first-direction flipping drive device further includes a limiter, which is fixed to the support base and is used to limit the maximum rotation angle of the adjusting flange.

[0021] In combination with the first aspect, in one embodiment, the flipping mechanism further includes:

[0022] A flipping platform, and both of the two support bases are fixed to the flipping platform;

[0023] Two flipping base brackets, and the flipping platform is rotatably connected between the two flipping base brackets;

[0024] A second-direction flipping drive device, which is installed on the flipping base bracket and is connected with the flipping platform. The second-direction flipping drive device is used to drive the flipping platform to flip in the second direction.

[0025] In combination with the first aspect, in one embodiment, the flipping mechanism further includes:

[0026] A second-direction flipping locking mechanism, which is used to lock the flipping of the flipping platform.

[0027] In combination with the first aspect, in one embodiment, the second-direction flipping locking mechanism includes:

[0028] A locking disc, which is coaxially fixed to the rotating shaft of the flipping platform;

[0029] The modified caliper is installed on the flipping base bracket. The modified caliper is connected to the locking disc through a locking mechanism, and the flipping of the flipping platform can be locked or unlocked by the modified caliper through the locking mechanism.

[0030] Combined with the first aspect, in an embodiment, the driving device one includes:

[0031] A driving motor, which is installed on the flipping mechanism through a bearing seat, and the driving motor is used to connect with the sample to be detected through a spline tooling;

[0032] A torque and speed sensor, which is installed between the driving motor and the sample to be detected, and is used to monitor the torque value of the driving motor;

[0033] A calibration force arm, which is detachably installed on the torque and speed sensor, and is used to calibrate and review the torque and speed sensor.

[0034] In a second aspect, an embodiment of the present application provides a test method for an electric drive assembly lubrication test device as described in some of the above embodiments, which includes:

[0035] Visually process and inject lubricating oil into the key parts of the sample to be detected, and install it on the support mechanism according to the test run layout angle;

[0036] Use the flipping mechanism to adjust the inclination angle of the sample to be detected, use the driving device one or / and the driving device two of the driving system to control the rotation speed and gear of the sample to be detected, and use the environmental chamber to control the test environment of the sample to be detected;

[0037] Observe and record the lubrication test results of the sample to be detected.

[0038] The beneficial effects brought by the technical solution provided by the embodiment of the present application include:

[0039] The support mechanism is used to fix different types of samples to be tested, such as gearbox samples, fixed dual-motor electric drive samples, and hybrid transmission samples. The support mechanism can ensure the stability of the samples during the test, and at the same time adapt to electric drive assembly components of different sizes and shapes, improving the versatility and accuracy of the test; The drive system includes a first drive device and a second drive device, which are coaxially arranged and both installed on the support mechanism, enabling the drive system to simulate the power transmission under real working conditions and perform lubrication performance tests on different types of samples; The flipping mechanism is connected to the support mechanism and is used to adjust the flipping angle of the support mechanism, so that the test device can simulate the lubrication conditions at different angles, especially the lubrication performance at extreme angles. Through the flipping mechanism, it is easier to observe the lubrication conditions of components such as bearings, oil seals, and gears under the worst oil agitation conditions, as well as the performance of the breather plug and the oil guiding effect of the oil guiding mechanism and parts, thereby more accurately evaluating the lubrication performance and service life of the electric drive assembly components. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 It is a three-dimensional structural schematic diagram of the first perspective of the electric drive assembly lubrication test device;

[0042] Figure 2 It is a three-dimensional structural schematic diagram of the second perspective of the electric drive assembly lubrication test device;

[0043] Figure 3 is Figure 1 The partial enlarged structural schematic diagram of the first drive device in

[0044] In the figure: 1. Support mechanism; 11. Support base; 12. Adjusting flange; 13. Fixed bracket; 2. Drive system; 21. First drive device; 211. Drive motor; 212. Calibration force arm; 213. Bearing seat; 22. Second drive device; 23. Third drive device; 3. Flipping mechanism; 31. First-direction flipping drive device; 311. First asynchronous motor; 312. First reducer; 313. First driving gear; 314. First driven sector gear; 32. Flipping platform; 33. Flipping base bracket; 34. Second-direction flipping drive device; 341. Second asynchronous motor; 342. Second driven sector gear; 35. Second-direction flipping locking mechanism; 352. Locking disc; 351. Modified caliper; 4. Sample to be tested; 5. Environmental chamber; 51. Environmental chamber main body; 52. Environmental chamber air duct; 53. Environmental chamber box body. Specific Embodiments

[0045] In order to enable those skilled in the art of the present technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application.

[0046] It should be understood that samples of gearboxes, fixed dual-motor electric drive samples, and hybrid gearbox samples all belong to the transmission assembly part of the electric drive assembly. The electric drive system is the "heart" of new energy vehicles, including key components such as transmission mechanisms and electric motors, which are responsible for converting electrical energy into mechanical energy to drive the vehicle forward. Among them, the transmission assembly is an important part of the electric drive assembly, which realizes the functions of reducing the output speed and increasing the output torque through mechanical structures such as gear sets to ensure that the electric drive system can continuously operate in the efficient range. Specifically, samples of gearboxes obviously directly correspond to the reducer part in the transmission assembly. It reduces the speed of the motor through transmission mechanisms such as gear sets and increases the torque at the same time to meet the power requirements during vehicle driving. Dual-motor electric drive samples usually also include a reduction mechanism or gearbox to adjust the output speed and torque of the two motors to adapt to different driving conditions. The reduction or speed change part in this structure also belongs to the category of the transmission assembly. Hybrid gearbox samples are used to adjust the power distribution between the engine and the motor in the hybrid system to achieve the switching and collaborative work between different power sources. It also includes a transmission mechanism to realize the transmission and conversion of power, so it also belongs to the transmission assembly. In summary, these three types of samples all belong to the transmission assembly part of the electric drive assembly and play an important role in the power transmission and control of new energy vehicles.

[0047] The embodiments of this application provide an electric drive assembly lubrication test device and a test method, which can solve the technical problem that the traditional lubrication test device has a relatively single structural form and is difficult to adapt to more complex working condition requirements.

[0048] In the first aspect, as Figure 1 and Figure 2 shown, the embodiments of this application provide an electric drive assembly lubrication test device, which includes: a support mechanism 1 for fixing different types of samples to be detected 4; a drive system 2 for power transmission of different types of samples to be detected 4, the drive system 2 includes a drive device one 21 and a drive device two 22, the drive device one 21 and the drive device two 22 are coaxially arranged and are both installed on the support mechanism 1; a flipping mechanism 3, the support mechanism 1 is fixed to the flipping mechanism 3, and the flipping mechanism 3 is used to adjust the flipping angle of the support mechanism 1.

[0049] In this embodiment, the support mechanism 1 is designed to fix different types of samples 4 to be tested, ensuring that the test device can be applied to a variety of electric drive assemblies, improving the versatility and flexibility of the test; the drive system 2 includes a first drive device 21 and a second drive device 22, which are coaxially arranged and both installed on the support mechanism 1, enabling the drive system 2 to efficiently and stably transmit power to the sample 4 to be tested, meeting the power requirements of different types of electric drive assemblies; the support mechanism 1 is fixed to the flipping mechanism 3, and the flipping mechanism 3 can adjust the flipping angle of the support mechanism 1. This design enables the test device to simulate the working conditions at the extreme angle (up to 45° at most), so as to more comprehensively verify the lubrication performance of the electric drive assembly under complex working conditions. By fixing the sample 4 to be tested through the support mechanism 1 and the coordinated action of the drive system 2 and the flipping mechanism 3, the test device can more accurately simulate the lubrication condition under actual working conditions, thereby improving the accuracy of the test. The design of the flipping mechanism 3 enables the test device to simulate the working conditions at different angles, including the extreme angle, thus enhancing the adaptability of the test device to complex working conditions and meeting the more stringent lubrication performance test verification standards. Through the improved technical solution, the test device can more efficiently verify the lubrication performance, thereby shortening the development cycle of the electric drive assembly and accelerating the market launch speed of new products. It can ensure the stability and reliability of the electric drive assembly under extreme working conditions, and further improve the performance and service life of the product, meeting the high-quality requirements of consumers for new energy vehicles.

[0050] In one embodiment, as Figure 1 shown, the support mechanism 1 includes: two coaxially arranged support seats 11, the support seats 11 are provided with through holes, and an adjusting flange 12 is installed in the through holes; the first drive device 21 is installed on one support seat 11, and the second drive device 22 is installed on the other support seat 11; both support seats 11 are fixed to the flipping mechanism 3.

[0051] In this embodiment, the support base 11, as the basic component of the entire support mechanism, is designed to be two and arranged coaxially. Such a design ensures that the first driving device 21 and the second driving device 22 can be stably and coaxially installed, thereby ensuring the smoothness and accuracy of power transmission. The structure and size of the support base 11 can be adjusted according to the specific type and size of the sample 4 to be detected, so as to improve the versatility and adaptability of the test device. A through hole is provided on the support base 11, and an adjusting flange 12 is installed in the through hole. The adjusting flange 12 is used to fix the sample 4 to be detected. The first driving device 21 and the second driving device 22 are respectively installed on the two support bases 11. Such a layout not only ensures the stability of the driving system, but also facilitates independent control or coordinated control of the two driving devices to meet different test requirements. Both support bases 11 are fixed to the flipping mechanism 3, which enables the entire support mechanism 1 to flip together with the flipping mechanism 3, thereby simulating the working conditions at different angles and meeting the verification requirements for the lubrication performance of the electric drive assembly under complex working conditions.

[0052] Specifically, for samples of the reduction gearbox type, they can be directly connected to the adjusting flange 12 through the motor mounting end face or the engine mounting end face of the reduction gearbox type sample, and the first driving device 21 or the second driving device 22 is used for power driving.

[0053] Combined with the first aspect, in an embodiment, as Figure 1 shown, the support mechanism 1 further includes: a fixed bracket 13, and the fixed bracket 13 is fixed between the two adjusting flanges 12; the driving system 2 further includes a third driving device 23, and the third driving device 23 is used for mounting samples of the hybrid transmission type.

[0054] In this embodiment, a fixed bracket 13 is added between the two adjusting flanges 12. This design not only strengthens the overall structural strength of the support mechanism 1, improves its load-bearing capacity and stability, but also provides an additional support point for the installation of the third driving device 23, ensuring its stability during the test. On the basis of the original first driving device 21 and the second driving device 22, a third driving device 23 is added. This newly added driving device is specifically used for mounting samples of the hybrid transmission type, meeting the test requirements of the test device for more types of electric drive assemblies.

[0055] In the first aspect, for the sample 4 to be detected being a dual-motor electric drive, the sample 4 to be detected can be fixed between the two adjusting flanges 12 through the fixed bracket 13 and driven simultaneously by the first driving device 21 and the second driving device 22, or driven by inputting power from the differential. In the second aspect, for the sample 4 to be detected being a hybrid transmission, combined driving can be carried out according to the working mode of the sample to be detected, and the third driving device 23 is added for a more complex load-bearing flipping driving lubrication test, which is closer to the actual vehicle use working conditions and can easily realize the lubrication test under differential conditions.

[0056] In combination with the first aspect, in one embodiment, as Figure 1 and Figure 3 shown, the flipping mechanism 3 includes a first-direction flipping driving device 31; the first-direction flipping driving device 31 includes: an asynchronous motor 311, the asynchronous motor 311 is installed on the support base 11, the output end of the asynchronous motor 311 is connected with a first reducer 312, and a first driving gear 313 is sleeved on the output end of the first reducer 312; a driven sector gear 314, the driven sector gear 314 is coaxially fixed to the end face of the adjusting flange 12 and meshes with the first driving gear 313.

[0057] In this embodiment, the flipping mechanism 3 mainly includes the first-direction flipping driving device 31, which is used to realize the flipping of the support mechanism 1 and the test sample 4 installed thereon in the left-right direction; the asynchronous motor 311 serves as a power source and is installed on the support base 11 to provide a stable driving force for the flipping action; the first reducer 312 is connected to the output end of the asynchronous motor 311 and is used to reduce the speed and increase the torque to ensure the smooth progress of the flipping action. A first driving gear 313 is sleeved on the output end of the first reducer 312. As a transmission component, it transmits power to the driven sector gear 314; the driven sector gear 314 is coaxially fixed to the end face of the adjusting flange 12 and meshes with the first driving gear 313; when the first driving gear 313 rotates, the driven sector gear 314 rotates accordingly, thereby driving the fixed bracket 13 and the test sample 4 thereon to flip. Through the precise transmission of the asynchronous motor 311, the first reducer 312, the first driving gear 313 and the driven sector gear 314, the precise control of the flipping angle of the support mechanism 1 can be realized, meeting the simulation requirements of different angle working conditions in the test. The speed reduction and torque increase effect of the first reducer 312, as well as the meshing transmission between the first driving gear 313 and the driven sector gear 314, jointly ensure the smoothness and stability of the flipping action, avoiding test errors or equipment damage caused by unstable flipping. The flipping mechanism 3 adopts a structural form of an asynchronous motor, a reducer and gear transmission, with a relatively simple structure, easy to process and assemble, reducing the manufacturing cost and maintenance difficulty. By adjusting the rotation speed and direction of the asynchronous motor 311, as well as the tooth number ratio of the first driving gear 313 and the driven sector gear 314, the flipping test of different types and sizes of electric drive assemblies can be realized, enhancing the versatility and adaptability of the test device.

[0058] In combination with the first aspect, in one embodiment, the first-direction flipping driving device 31 further includes a stopper, the stopper is fixed to the support base 11, and it is used to limit the maximum rotation angle of the adjusting flange 12.

[0059] In this embodiment, a limiter is added to the first-direction flipping drive device 31. This component is fixed to the support base 11 and is adjacent to or in contact with the adjustment flange 12. The main function of the limiter is to limit the maximum rotation angle of the adjustment flange 12 (and the sample 4 to be detected mounted thereon), ensuring that the flipping action is carried out within a preset safe range. Exemplarily, the limiter is a mechanical limiter, which is the simplest and most common type of limiter. It usually includes components such as a limit pin and a limit plate. The limit pin is fixed to the support base 11, while the limit plate is connected to the adjustment flange 12. When the adjustment flange 12 rotates to the maximum angle, the limit pin will contact the limit plate, thereby preventing it from further rotating.

[0060] Combined with the first aspect, in one embodiment, as Figure 1 and Figure 2 shown, the flipping mechanism 3 further includes: a flipping platform 32, and both support bases 11 are fixed to the flipping platform 32; two flipping base brackets 33, and the flipping platform 32 is rotatably connected between the two flipping base brackets 33; a second-direction flipping drive device 34, which is installed on the flipping base brackets 33 and is connected to the flipping platform 32, and the second-direction flipping drive device 34 is used to drive the flipping platform 32 to flip along the second direction.

[0061] In this embodiment, the flipping platform 32 serves as the carrier of the support mechanism 1 (including two support bases 11), providing a stable support surface for the sample 4 to be detected. Both support bases 11 are fixed to the flipping platform 32, ensuring a rigid connection between the support mechanism 1 and the flipping platform 32; the flipping platform 32 is installed between the two flipping base brackets 33 through a rotational connection (such as bearings, rotating shafts, etc.), which enables the flipping platform 32 to rotate back and forth relative to the flipping base brackets 33; the flipping base brackets 33 provide stable support for the flipping platform 32 and bear the forces and torques generated during the flipping process; the second-direction flipping drive device 34 is installed on the flipping base brackets 33 and is connected to the flipping platform 32; this drive device is used to drive the flipping platform 32 to flip along the front-back direction (different from the direction driven by the first-direction flipping drive device 31), that is, this device can simulate the left-right tilting condition of the vehicle, can also simulate the front-back tilting condition of the vehicle, and can also perform a combined condition of left-right tilting and front-back tilting simultaneously, and can restore the actual vehicle operating condition of the product. Exemplarily, the second-direction flipping drive device 34 can include components such as a motor, a reducer, and a transmission mechanism to provide sufficient driving force and flipping accuracy.

[0062] Combined with the first aspect, in one embodiment, as Figure 2 shown, the second-direction flipping drive device 34 includes an asynchronous motor two 341, a reducer two, a driving gear two, and a driven sector gear two 342.

[0063] In this embodiment, the asynchronous motor II 341 is the power source of the second-direction flipping drive device 34, responsible for providing rotational power. It converts electrical energy into mechanical energy to drive the entire device to perform flipping actions. The reducer II is connected to the asynchronous motor II 341 and is used to reduce the motor speed and increase the torque, which helps to make the drive device more stable during flipping and improve the accuracy and reliability of flipping. The driving gear II is connected to the output end of the reducer II and is a key component for transmitting power. It transmits power to the driven component through meshing with the driven sector gear II 342 to achieve the flipping action. The driven sector gear II 342 meshes with the driving gear II and is the component that receives power. Through cooperation with the driving gear II, the rotation of the driven sector gear II 342 is realized, thereby driving the flipping of the flipping platform 32.

[0064] Combined with the first aspect, in one embodiment, as Figure 1 shown, the flipping mechanism 3 further includes: a second-direction flipping locking mechanism 35, and the second-direction flipping locking mechanism 35 is used to lock the flipping of the flipping platform 32.

[0065] In this embodiment, the flipping mechanism 3 further includes a second-direction flipping locking mechanism 35. The main purpose of this design is to lock the flipping action of the flipping platform 32 when needed to ensure its stability at a specific position. The second-direction flipping locking mechanism 35 can adopt a mechanical locking method, such as locking the flipping platform 32 to the flipping base bracket 33 or other fixed components through components such as pins, claws or locking blocks to prevent its flipping. This locking mechanism has a simple structure and high reliability, but the operation may be relatively cumbersome. Another is to adopt an electromagnetic locking mechanism. This mechanism uses the suction force of an electromagnet to lock the flipping platform 32 at a specific position. When the electromagnet is energized, a suction force is generated to lock the flipping platform 32; when the electromagnet is de-energized, the suction force disappears and the flipping platform 32 can flip freely. This locking mechanism is convenient to operate and has a fast response speed, but it requires external power support.

[0066] In some cases, the second-direction flipping locking mechanism 35 may also adopt a hydraulic or pneumatic locking method. This locking mechanism generates a locking force through a hydraulic or pneumatic system to lock the flipping platform 32 at a specific position. This locking mechanism has a large locking force and good stability, but the structure is relatively complex and requires an additional hydraulic or pneumatic system support.

[0067] Combined with the first aspect, in one embodiment, as Figure 1As shown in the figure, the second-direction flipping locking mechanism 35 includes: a locking disk 352, which is coaxially fixed with the rotating shaft of the flipping platform 32; a modified caliper 351, which is installed on the flipping base bracket 33, and the modified caliper 351 is connected to the locking disk 352 through a locking mechanism. The modified caliper 351 can lock or unlock the flipping of the flipping platform 32 through the locking mechanism.

[0068] In this embodiment, the locking disk 352 is a key locking component, which is coaxially fixed with the rotating shaft of the flipping platform 32. This means that when the flipping platform 32 rotates around its rotating shaft, the locking disk 352 will also rotate synchronously. The modified caliper 351 is a specially designed caliper used to cooperate with the locking disk 352 to achieve the locking or unlocking function. The modified caliper 351 is installed on the flipping base bracket 33 to ensure its stability in spatial position. The modified caliper 351 is connected to the locking disk 352 through a locking mechanism, which means that it can be in close contact with or separated from the locking disk 352 under the action of the locking mechanism, so as to achieve the locking or unlocking function. The locking mechanism is the core component to achieve the locking and unlocking functions. It connects the modified caliper 351 and the locking disk 352 and controls their interaction. The locking mechanism includes mechanical transmission components (such as levers). When the locking mechanism is in the locked state, it will drive the modified caliper 351 to be in close contact with the locking disk 352, thus preventing the flipping action of the flipping platform 32. When the locking mechanism is in the unlocked state, it will release the modified caliper 351, making it separate from the locking disk 352 and allowing the flipping platform 32 to flip freely. When it is necessary to lock the flipping action of the flipping platform 32, the locking mechanism will be activated (for example, controlled by an electric signal to attract the electromagnet), driving the modified caliper 351 to be in close contact with the locking disk 352. Since the locking disk 352 is coaxially fixed with the rotating shaft of the flipping platform 32, the locking force of the modified caliper 351 will be transmitted to the flipping platform 32 to prevent its flipping. When it is necessary to unlock the flipping platform 32 to allow it to continue flipping, the locking mechanism will be released (for example, controlled by an electric signal to cut off the power of the electromagnet), making the modified caliper 351 separate from the locking disk 352. At this time, the flipping platform 32 can rotate freely around its rotating shaft.

[0069] Combined with the first aspect, in one embodiment, as Figure 1 and Figure 3 shown, the first driving device 21 includes: a driving motor 211, which is installed on the flipping mechanism 3 through a bearing seat 213, and the driving motor 211 is used to connect with the sample to be detected 4 through a spline tooling; a torque and speed sensor, which is installed between the driving motor 211 and the sample to be detected 4 and is used to monitor the torque value of the driving motor 211; a calibration force arm 212, which is installed on the torque and speed sensor and is used to calibrate and review the torque and speed sensor.

[0070] In this embodiment, the drive motor 211 is the core component of the first drive device 21, responsible for providing rotational power to drive the sample to be tested 4 (i.e., the electric drive assembly of a new energy vehicle) for rotational testing. The drive motor 211 is stably mounted on the flipping mechanism 3 through a bearing block 213, ensuring its stability and reliability during the testing process. The output end of the drive motor 211 is connected to the sample to be tested 4 through a spline tooling, achieving effective power transmission. The torque and speed sensor is installed between the drive motor 211 and the sample to be tested 4, and is an important component for monitoring and recording key parameters during the testing process. This sensor can real-time monitor the torque value output by the drive motor 211, providing key data for evaluating the lubrication performance of the electric drive assembly. At the same time, the torque and speed sensor can also monitor parameters such as speed, providing support for a comprehensive analysis of the test results. The calibration lever arm 212 is installed on the torque and speed sensor, and is an important tool to ensure the measurement accuracy of the sensor. Through the calibration lever arm 212, the torque and speed sensor can be periodically calibrated and verified to ensure the accuracy and reliability of its measurement results. The calibration process may involve operations such as zero calibration and full-scale calibration of the sensor to ensure its stability and accuracy throughout the testing process.

[0071] Combined with the first aspect, in one embodiment, the electric drive assembly lubrication test device further includes an environmental chamber 5, which includes an environmental chamber main body 51, environmental chamber air ducts 52, and an environmental chamber box body 53. The environmental chamber box body 53 is used to sleeved and sealed different types of samples to be tested 4. The environmental chamber main body 51 is connected to the environmental chamber box body 53 through two environmental chamber air ducts 52, and the environmental chamber main body 51 circulates and transports corresponding cold air or hot air into the environmental chamber box body 53 through the environmental chamber air ducts 52.

[0072] In this embodiment, the environmental chamber 5 is mainly composed of an environmental chamber main body 51, environmental chamber air ducts 52, and an environmental chamber box body 53. The design of the environmental chamber box body 53 is used to sleeved and seal different types of samples to be tested 4, ensuring that the environmental parameters during the testing process can be accurately controlled and act on the sample to be tested 4. The environmental chamber main body 51 is connected to the environmental chamber box body 53 through two environmental chamber air ducts 52. This design enables the environmental chamber main body 51 to circulate and transport cold air or hot air into the environmental chamber box body 53 to meet the temperature requirements under different testing conditions.

[0073] Specifically, the environmental chamber main body 51 serves as the control center of the entire environmental chamber. It is not only responsible for adjusting and outputting the required environmental parameters (such as temperature, humidity, etc.), but also accurately transmits these parameters into the environmental chamber box body 53 through the environmental chamber air ducts 52. The environmental chamber air ducts 52 play a crucial role in connection and transmission here. They ensure the stable transmission of environmental parameters and avoid parameter fluctuations or losses caused by unreasonable pipeline designs. The environmental chamber box body 53, as the part that directly sleeves and seals the sample 4 to be tested, needs to fully consider sealing performance and durability in its design. On the one hand, it must ensure that external environmental interference during the test does not affect the accuracy of the test results; on the other hand, it must also be able to withstand various forces and pressures that may occur during the test to ensure the smooth progress of the test.

[0074] Combined with the first aspect, in one embodiment, the environmental chamber air ducts 52 are corrugated pipes with a certain degree of flexibility, and they are internally provided with heat insulation materials, which facilitates the environmental chamber box body 53 to follow the flipping platform 32 for flipping adjustment.

[0075] Combined with the first aspect, in one embodiment, the environmental chamber box body 53 is composed of a top cover and a base. The side of the base is in a "V" shape, and the bottom is fixed on the flipping platform 32. The top cover and the base are connected by quick-release buckles. Lifting lugs are provided on the top cover, which can be quickly disassembled to facilitate personnel to install samples. Transparent observation windows are provided on three sides of the environmental chamber box body 53 to facilitate personnel to observe the internal state.

[0076] Combined with the first aspect, in one embodiment, the environmental chamber 5 further includes a monitoring data acquisition system. The monitoring data acquisition system includes several high and low temperature resistant cameras, which can be placed inside the environmental chamber box body 53 through the adjustment brackets inside the chamber, or placed outside the chamber to record through the transparent observation windows. The adjustment brackets can be adjusted in all directions to facilitate arranging the cameras to align with the required observation points. The data of the monitoring data acquisition system, together with the signals of other sensors on the test bench, are transmitted to the computer through the data acquisition box and can be displayed and recorded in real time. The environmental chamber 5 is also provided with CAN communication for controlling parameters such as gear positions and oil pumps.

[0077] Combined with the first aspect, in one embodiment, the electric drive assembly lubrication test device further includes an inclination sensor, which is fixed on the adjustment flange 12 and can measure the front and rear inclination angles and the left and right inclination angles simultaneously.

[0078] Combined with the first aspect, in one embodiment, the drive device two 22 or the drive device three 23 can adopt a new energy motor that matches the sample 4 to be tested.

[0079] In the second aspect, the embodiment of the present application provides a usage method of an electric drive assembly lubrication test device, which mainly includes the following steps:

[0080] S1: Install the processed sample to be detected 4 (using a transparent housing or opening windows at key parts) on the flipping platform 32 at the test running layout angle, and fill it with a specified amount of lubricating oil.

[0081] S2: Adjust the parameters of the flipping platform 32, the first driving device 21, the second driving device 22, the third driving device 23 and the environment chamber 5 to the specified test conditions (including inclination angle, rotational speed, temperature, gear position, etc.).

[0082] S3: Observe and record the lubrication test results of the sample to be detected 4.

[0083] Among them, in S1, the processing of the sample to be detected 4 usually uses an engineering plastic housing for assembly, or opens windows at key housing parts and seals them with acrylic plastic film. The main purpose is to facilitate the intuitive observation and recording of the lubrication state of the product. The specified amount of lubricating oil in S1 can also be obtained by conducting an oil level and oil quantity test (determining the specific oil quantity to the standard oil level line). The electric drive assembly lubrication test device is provided with a CAN communication module, and the parameters such as the gear position related to the sample in S2 can be integrated and controlled through the CAN bus. For the recording and determination of the lubrication test results in S3, according to the present invention, for the directly assessable parts, the oil level and oil quantity conditions are recorded and judged, which is convenient for subsequent review of the test results. The judgment criteria are divided into four grades (see Table 1 below).

[0084] Table 1

[0085]

[0086] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0087] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0088] The above are only specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to the embodiments shown herein, but rather will conform to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. An electric drive assembly lubrication test device, characterized in that: It includes: A supporting mechanism (1) for fixing different types of samples to be tested (4); A drive system (2) for transmitting power to different types of samples to be tested (4), the drive system (2) comprising a drive device 1 (21) and a drive device 2 (22), the drive device 1 (21) and the drive device 2 (22) being coaxially arranged and both mounted on a support mechanism (1); A turning mechanism (3), the supporting mechanism (1) being fixed to the turning mechanism (3), and the turning mechanism (3) being used to adjust the turning angle of the supporting mechanism (1).

2. The electric drive assembly lubrication test device according to claim 1, characterized in that: The supporting mechanism (1) comprises: Two coaxially arranged support seats (11), each support seat (11) being provided with a through hole, and an adjusting flange (12) being installed in the through hole; The driving device 1 (21) is installed on one of the supporting seats (11), and the driving device 2 (22) is installed on the other of the supporting seats (11); The two support seats (11) are both fixed to the turning mechanism (3).

3. The electric drive assembly lubrication test device according to claim 2, characterized in that: The support mechanism (1) further comprises: A fixed bracket (13), wherein the fixed bracket (13) is fixed between the two adjustment flanges (12); The driving system (2) further comprises a driving device three (23), wherein the driving device three (23) is used for being installed on a hybrid transmission type sample.

4. The electric drive assembly lubrication test device according to claim 2 or 3, characterized in that: The turning mechanism (3) comprises a first direction turning driving device (31); The first direction flipping driving device (31) comprises: An asynchronous motor (311), the asynchronous motor (311) being mounted on the support seat (11), the output end of the asynchronous motor (311) being connected to a reducer (312), the output end of the reducer (312) being sleeved with a driving gear (313); A driven sector gear 1 (314), wherein the driven sector gear 1 (314) is coaxially fixed to the end surface of the adjusting flange (12) and meshes with the driving gear 1 (313).

5. The electric drive assembly lubrication test device according to claim 4, characterized in that: The first direction flipping driving device (31) further comprises a limiter, which is fixed to the support seat (11) and is used to limit the maximum rotation angle of the adjustment flange (12).

6. The electric drive assembly lubrication test device according to claim 2 or 3, characterized in that: The turning mechanism (3) further comprises: A turning platform (32), the two support seats (11) are both fixed to the turning platform (32); Two flip base brackets (33), the flip platform (32) is rotatably connected between the two flip base brackets (33); A second direction flipping driving device (34), wherein the second direction flipping driving device (34) is mounted on the flip base bracket (33) and connected to the flip platform (32), and the second direction flipping driving device (34) is used to drive the flip platform (32) to flip along a second direction.

7. The electric drive assembly lubrication test device according to claim 6, characterized in that: The turning mechanism (3) further comprises: The second direction flip locking mechanism (35) is used to lock the flipping of the flip platform (32).

8. The electric drive assembly lubrication test device according to claim 7, characterized in that: The second direction flip locking mechanism (35) comprises: A locking plate (352), wherein the locking plate (352) is coaxially fixed with the rotation axis of the turning platform (32); A modified caliper (351) is installed on the flip base bracket (33), the modified caliper (351) is connected to the locking plate (352) via a locking mechanism, and the modified caliper (351) can lock or unlock the flip platform (32) via the locking mechanism to flip.

9. The electric drive assembly lubrication test device according to claim 1, characterized in that: The driving device 1 (21) comprises: A driving motor (211), wherein the driving motor (211) is installed on the turning mechanism (3) via a bearing seat (213), and the driving motor (211) is connected to the sample to be tested (4) via a spline tooling; A torque speed sensor, the torque speed sensor being installed between the drive motor (211) and the sample to be tested (4), and being used to monitor the torque value of the drive motor (211); A calibration arm (212), wherein the calibration arm (212) is detachably mounted on the torque and speed sensor, and the calibration arm (212) is used to calibrate and verify the torque and speed sensor.

10. A test method for the electric drive assembly lubrication test device according to claim 1, characterized in that: It includes: Visually process the key parts of the sample (4) to be tested and inject lubricating oil, and install it on the support mechanism (1) according to the test layout angle; The tilting mechanism (3) is used to adjust the tilting angle of the sample to be tested (4), the driving device 1 (21) or / and the driving device 2 (22) of the driving system (2) are used to control the rotation speed and gear position of the sample to be tested (4), and the environmental chamber (5) is used to control the test environment of the sample to be tested (4); Observe and record the lubrication test results of the sample to be tested (4).

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