An electric drive assembly rotational speed loop durability test system and method

Abstract

The application provides an electric drive assembly rotating speed ring endurance test system and method, wherein the electric drive assembly rotating speed ring endurance test system comprises a tool, the top of the tool is provided with a plurality of damping energy dissipation seats; an electric drive assembly is installed on the damping energy dissipation seats, and damping compression springs are arranged on the damping energy dissipation seats; an electric drive assembly operation control module is installed on the tool; a test module is connected with the electric drive assembly operation control module, the test module is used for inputting test parameters and lifting speed slope to the electric drive assembly operation control module; the electric drive assembly operation control module is used for controlling the start-stop and rotating speed of the electric drive assembly according to the test parameters and the lifting speed slope. By controlling and slowing down the lifting of the rotating speed of the electric drive assembly, the updating interval of the lifting rotating speed slope is reduced, so that the shaking generated by the electric drive assembly is reduced, which is the cause of the shaking; secondly, based on the generation of the shaking and the elimination of the shaking, the shaking is suppressed by the tool.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric drive controller development, and particularly relates to an electric drive assembly rotating speed ring endurance test system and method. BACKGROUND

[0002] In the electric drive assembly rotating speed ring endurance test, the stability of the electric drive assembly under the "high rotating speed and low torque" working condition is particularly important. During high-speed operation of the rotor, "dynamic balance abnormality" or "slight shaking" may occur, which causes scratching with the stator or causes the rotor to crack due to the centrifugal force of the high-speed rotor.

[0003] In the prior art, on the one hand, the existing electric drive assembly support fixing device cannot effectively prevent and inhibit the shaking occurring during the operation of the electric drive assembly, which may cause slight wear or even abnormal state. On the other hand, in the electric drive assembly rotating speed ring endurance test, the control of the lifting rotating speed slope does not consider the shaking of the electric drive assembly support fixing tool in different degrees, the updating interval of the lifting rotating speed slope is too large, the electric drive assembly rotating speed rising process curve presents obvious steps, and the electric drive assembly produces obvious shaking, which is not conducive to the electric drive assembly rotating speed ring endurance test. SUMMARY

[0004] The application provides an electric drive assembly rotating speed ring endurance test system and method, which can solve the problems of the prior art electric drive assembly rotating speed ring endurance test, i.e., the updating interval of the lifting rotating speed slope is too large, the electric drive assembly shakes violently, and the shaking of the electric drive assembly is not effectively inhibited.

[0005] In a first aspect, an electric drive assembly rotating speed ring endurance test system includes a tool including a support base provided with a plurality of damping energy dissipation seats; an electric drive assembly installed on the plurality of damping energy dissipation seats, and a damping compression spring provided on the damping energy dissipation seat; an electric drive assembly operation control module installed on the tool; a test module connected with the electric drive assembly operation control module, the test module being used for inputting test parameters and lifting speed slope to the electric drive assembly operation control module; and the electric drive assembly operation control module being used for controlling the start-stop and rotating speed of the electric drive assembly according to the test parameters and the lifting speed slope.

[0006] In combination with the first aspect, in an implementation mode, the damping energy dissipation seat is provided with a tool plate; the plurality of damping energy dissipation seats form a first area for installing the electric drive assembly, and the electric drive assembly is erected on the plurality of damping energy dissipation seats through corresponding connection with the tool plate.

[0007] In combination with the first aspect, in an implementation mode, the damping energy dissipation seat includes a damping bottom plate, a fixing column and an installation plate; the damping bottom plate and the installation plate are connected through the damping compression spring, the fixing column is fixed on the damping bottom plate, and the installation plate is detachably connected with the support base; and the tool plate is arranged on the fixing column.

[0008] With reference to the first aspect, in an embodiment, the support base comprises a support platform and support columns; two support columns are arranged at two sides of the bottom of the support platform to form a first space for the construction vehicle to enter and exit; and the mounting plate is detachably connected to the top of the support platform.

[0009] With reference to the first aspect, in an embodiment, screw grooves are arranged on the support platform; mounting holes are arranged on the mounting plate, and the mounting plate is arranged in the corresponding screw grooves through the mounting holes and the bolts to be detachably connected to the support platform.

[0010] With reference to the first aspect, in an embodiment, the tooling is arranged in the environmental box, and the environmental box is used to provide the required test environment for the tooling; the environmental module comprises a battery simulator and a cooling circulating water machine; the positive electrode and the negative electrode of the battery simulator are connected to the electric drive assembly; and the cooling circulating water machine is used to supply cooling water to the electric drive assembly.

[0011] With reference to the first aspect, in an embodiment, the data monitoring processing module is used to calculate the lifting speed slope; the test module comprises a host computer and an instruction transmission module; the host computer is communicatively connected to the data monitoring processing module and obtains the lifting speed slope; and the host computer inputs the test parameters and the lifting speed slope to the electric drive assembly operation control module through the instruction transmission module.

[0012] With reference to the first aspect, in an embodiment, the data monitoring processing module is communicatively connected to the host computer based on an NI OPC server; the host computer is communicatively connected to the instruction transmission module based on a TCP / IP protocol; the electric drive assembly operation control module is communicatively connected to the instruction transmission module based on a CAN1 interface message; the environmental box is communicatively connected to the instruction transmission module based on a CAN0 interface message; and the cooling circulating water machine is communicatively connected to the instruction transmission module based on a CAN2 interface message.

[0013] With reference to the first aspect, in an embodiment, the host computer is used to obtain current state values of the environmental box, the cooling circulating water machine and the tooling, and to transmit the current state values to the data monitoring processing module; the data monitoring processing module is used to process the current state values and to transmit fault codes to the host computer; and the host computer controls the start and stop of the electric drive assembly and the working state of the environmental module based on the fault codes.

[0014] In a second aspect, the embodiments of the present application provide a method for testing the durability of the rotation speed ring of an electric drive assembly, which comprises: selecting an operation mode and setting test parameters based on the test requirements and the speed ramp of the test system for the durability of the rotation speed ring of the electric drive assembly, and starting the test; the test module transmits the operation mode and the test parameters to the electric drive assembly operation control module, which controls the start and stop and the rotation speed of the electric drive assembly based on the test parameters and the speed ramp; the current state of the environment module and the electric drive assembly is acquired in real time, and if an abnormality is identified, a speed reduction instruction is sent to stop the test of the durability of the rotation speed ring of the electric drive assembly.

[0015] The technical scheme provided by the embodiments of the present application has the following beneficial effects:

[0016] The embodiments of the present application provide a system and method for testing the durability of the rotation speed ring of an electric drive assembly, wherein the support base provides stable support, and the damping energy consumption seats arranged on the top of the support base are used to install the electric drive assembly, thereby reducing the probability of shaking of the electric drive assembly, protecting the stator and the rotor to a certain extent, avoiding scratching between the stator and the rotor, and improving the safety and accuracy of the test. The electric drive assembly installed on the damping energy consumption seat is responsible for providing power and performing performance testing, and the design ensures effective operation under high rotation speed and low torque conditions; the damping compression spring installed on the damping energy consumption seat 2 can absorb and alleviate the adverse effects caused by vibration or impact based on the vibration of the electric drive assembly, further improving the safety and stability of the test. The control module installed on the tool is responsible for monitoring and adjusting the running state of the electric drive assembly to ensure its accuracy and higher response speed during the test. The test module is connected with the operation control module and is used to receive the test parameters and the speed ramp input by the user. The design of this module ensures flexibility, so that various tests can be performed under different conditions. The electric drive assembly vibration problem is solved from two aspects: first, by controlling and slowing down the speed of the electric drive assembly, the update interval of the speed ramp is reduced, thereby reducing the shaking of the electric drive assembly, which is the cause of the vibration; on the other hand, based on the generation of vibration and the inability to eliminate the shaking, the tool is set to suppress the vibration. Thus, the problem of the existing technology that the update interval of the speed ramp is too large, the electric drive assembly shakes violently, and the shaking of the electric drive assembly is not effectively suppressed in the durability test of the rotation speed ring of the electric drive assembly is solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the tool structure in the embodiments of the present application;

[0018] Figure 2 The figure is a schematic diagram of the support base and the damping energy consumption seat structure in the embodiments of the present application;

[0019] Figure 3A schematic diagram of a damping energy consumption seat structure in the embodiments of the present application;

[0020] Figure 4 A structural diagram of an electric drive assembly rotating speed ring test system in the embodiments of the present application.

[0021] In the figure: 1, electric drive assembly; 2, damping energy consumption seat; 21, damping bottom plate; 22, fixed column; 23, mounting plate; 231, mounting hole; 3, supporting base; 31, supporting platform; 32, supporting cross column; 4, damping compression spring; 5, first space; 6, screw groove; 7, tool plate. DETAILED DESCRIPTION

[0022] In order to enable personnel in the technical field to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0023] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in combination with the accompanying drawings.

[0024] Based on the electric drive assembly 1 rotating speed ring durability test, the stability of the electric drive assembly 1 under the “high rotating speed low torque” working condition is particularly important. When the rotor runs at high speed, “dynamic balance abnormality” or “slight shaking” may occur, which may cause scratching with the stator or cause the rotor to crack due to the centrifugal force of the high-speed rotor. Since the existing electric drive assembly 1 supporting and fixing device cannot effectively prevent and inhibit the shaking occurring during the operation of the electric drive assembly 1, slight wear may occur or even abnormal state may occur. In addition, in the electric drive assembly 1 rotating speed ring durability test, the control of the lifting rotating speed slope may cause different degrees of shaking of the electric drive assembly 1 supporting and fixing tool. The update interval of the lifting rotating speed slope is too large, which causes the electric drive assembly 1 rotating speed rising process curve to present obvious step shape, and the electric drive assembly 1 produces obvious shaking, which is not conducive to the electric drive assembly 1 rotating speed ring durability test. Therefore, a test system is designed, which includes a set of damping energy consumption seat structure that can effectively suppress the shaking occurring during the operation of the electric drive assembly 1. For the system, a control module is designed, which can control and slow down the lifting of the electric drive assembly 1 rotating speed, reduce the update interval of the lifting rotating speed slope, thereby reducing the shaking of the electric drive assembly 1. The problem of the update interval of the lifting rotating speed slope being too large and the electric drive assembly 1 shaking violently in the electric drive assembly 1 rotating speed ring durability test in the prior art, and the problem of the electric drive assembly 1 not being effectively inhibited from shaking are solved.

[0025] In a first aspect, the embodiments of the present application provide an electric drive assembly speed ring endurance test system, which refers to Figures 1-4 , Figure 1 is a schematic diagram of the tool structure of the embodiments of the present application. As shown in Figure 1 , an electric drive assembly speed ring endurance test system includes: a tool including a support base 3 provided with a plurality of shock-absorbing energy-consuming seats 2 on the top; an electric drive assembly 1 installed on the plurality of shock-absorbing energy-consuming seats 2, and a shock-absorbing compression spring 4 is provided on the shock-absorbing energy-consuming seat 2; an electric drive assembly operation control module installed on the tool; a test module connected with the electric drive assembly operation control module, the test module is used for inputting test parameters and speed ramp to the electric drive assembly operation control module; the electric drive assembly operation control module is used for controlling the start-stop and speed of the electric drive assembly 1 according to the test parameters and speed ramp.

[0026] Through this system design, the support base 3 provides stable support, and the plurality of shock-absorbing energy-consuming seats 2 provided on the top of the support base 3 are used to install the electric drive assembly 1, which reduces the probability of shaking of the electric drive assembly 1, to a certain extent, protects the stator and rotor, avoids scratches between the stator and rotor, and improves the safety and accuracy of the test. The electric drive assembly installed on the shock-absorbing energy-consuming seat is responsible for providing power and performing performance testing, and its design ensures effective operation under high speed and low torque conditions; the shock-absorbing compression spring 4 installed on the shock-absorbing energy-consuming seat 2 can absorb and relieve the adverse effects caused by vibration or impact based on the vibration of the electric drive assembly 1, further improving the safety and stability of the test. The control module installed on the tool is responsible for monitoring and adjusting the running state of the electric drive assembly 1 to ensure its accuracy and higher response speed during the test process. The test module is connected with the operation control module and is used for receiving the test parameters and speed ramp input by the user. The design of this module ensures flexibility, so that various tests can be carried out under different conditions. The electric drive assembly vibration problem is solved from two aspects: first, by controlling and slowing down the speed of the electric drive assembly 1, the update interval of the speed ramp is reduced, thereby reducing the shaking of the electric drive assembly, which is the cause of the vibration; on the other hand, based on the generation of vibration and the inability to eliminate the shaking, the tool is set to suppress the vibration. Thus, the problem of the existing electric drive assembly 1 speed ring endurance test, i.e., the update interval of the speed ramp is too large, the electric drive assembly 1 shakes violently, and the electric drive assembly 1 cannot effectively suppress the shaking, is solved.

[0027] Further, in an embodiment, the shock-absorbing energy-consuming seat 2 is provided with a tool plate 7; the plurality of shock-absorbing energy-consuming seats 2 form a first area for installing the electric drive assembly 1, and the electric drive assembly 1 is erected on the plurality of shock-absorbing energy-consuming seats 2 by corresponding connection with the tool plate 7.

[0028] In this embodiment, to further enhance the shock absorption effect and installation convenience, different shapes and sizes of tooling plates 21 can be installed on the shock absorption energy consumption seat 2 based on the size of the electric drive assembly 1. The tooling plate 21 aims to provide an intermediate structure to make the connection between the electric drive assembly 1 and the shock absorption energy consumption seat 2 more flexible. This design can effectively alleviate the vibration generated during the operation of the electric drive assembly 1, reducing its direct transmission to the shock absorption energy consumption seat 2. The tooling plate 21 can be made of a certain elastic material, such as rubber or polyurethane, to improve its shock absorption capacity by absorbing and dissipating vibration energy, further reducing the vibration generated by the electric drive assembly 1. By erecting the electric drive assembly 1 on multiple shock absorption energy consumption seats 2, more uniform load distribution can be achieved, reducing overall instability caused by local vibration. Through this reasonable design and improvement, the combination of the tooling plate 21 and the shock absorption energy consumption seat 2 can effectively improve the shock resistance of the electric drive assembly 1, reduce the impact of vibration on the overall assembly and system, thereby enhancing the performance and improving the safety of the test.

[0029] Further, in an embodiment, the shock absorption energy consumption seat 2 includes a shock absorption bottom plate 21, a fixed column 22, and a mounting plate 23. The shock absorption bottom plate 21 is connected to the mounting plate 23 through a shock absorption compression spring 4, the fixed column 22 is fixed to the shock absorption bottom plate 21, and the mounting plate 23 is detachably connected to the support base 3. The tooling plate 7 is provided on the fixed column 22.

[0030] In this embodiment, the main function of the shock absorption bottom plate 21 is to serve as a support structure to withstand vibration from the electric drive assembly 1 and transmit it to the shock absorption compression spring 4. The bottom plate can be made of a composite material with certain elasticity and strength to effectively absorb and disperse vibration. The fixed column 22 is connected to the shock absorption bottom plate 21 and serves as a support and connection for the electric drive assembly 1, ensuring the stability of the entire shock absorption energy consumption seat. The shock absorption compression spring 4 is connected between the shock absorption bottom plate 21 and the mounting plate 23, mainly used to reduce vibration transmission, thereby providing better shock isolation effect. The shock absorption compression spring 4 can deform elastically when affected by external vibration, dispersing and absorbing impact force. According to the different vibration frequencies and amplitudes, the shock absorption compression spring 4 with appropriate stiffness and material is selected. The mounting plate 21 is used to fix the shock absorption energy consumption seat 2, which can be detachably connected to the support base 3 by bolts or other means. Through the above settings, the performance of the shock absorption energy consumption seat 2 can be further improved, ensuring that the electric drive assembly 1 can still maintain stable and efficient testing under various complex working conditions.

[0031] Further, in an embodiment, the support base 3 includes a support platform 31 and a support cross column 32. Two support cross columns 32 are arranged on both sides of the bottom of the support platform 31 to form a first space 5 for the construction vehicle to enter and exit. The mounting plate 23 is detachably connected to the top of the support platform 31.

[0032] In this embodiment, the structure of the support base 3 includes a support platform 31 and support columns 32, which provides a convenient space for the construction vehicle to enter and exit, and forms a detachable connection with the mounting plate 23. The support platform 31 provides the basic support of the entire structure, carrying the components and equipment mounted thereon. Two support columns 32 are arranged on both sides of the bottom of the support platform 31, enhancing the overall stability and rigidity, preventing the support platform 31 from deforming under load, and the interval design of the support columns 32 provides sufficient space to ensure that the construction vehicle can smoothly enter and exit the first space 5, improving the convenience of use; the mounting plate 23 can be detached as needed for easy maintenance and replacement of equipment, providing flexibility for quick adjustments in different scenarios or needs.

[0033] Further, in an embodiment, screw grooves 6 are arranged on the support platform 31; mounting holes 231 are provided on the mounting plate 23, and bolts are passed through the mounting holes 231 to be arranged in the corresponding screw grooves 6, so that the mounting plate 23 is detachably connected to the support platform 31.

[0034] In this embodiment, the screw grooves 6 are arranged on the support platform 31, providing a linear connection method that allows the mounting plate 23 to be positioned flexibly. This design allows users to adjust at different positions, improving the flexibility of assembly. The mounting holes 231 are arranged on the mounting plate 23 and cooperate with the screw grooves 6, so that the mounting plate 23 can be securely fixed to the support platform 31 by bolts. The fixing method by bolts ensures the stability of the mounting plate 23 and withstands the force generated by vibration during use. The detachable design allows quick and convenient operation when maintenance, upgrading, or replacing equipment is needed, saving time and labor costs. The connection between the screw grooves 6 and the mounting holes 231 is designed to ensure convenience during assembly without affecting the stability of the connection.

[0035] Further, in an embodiment, it further includes an environmental box and an environmental module, the tooling is arranged in the environmental box, and the environmental box is used to provide the required test environment for the tooling; the environmental module includes a battery simulator and a cooling circulating water machine; the positive and negative electrodes of the battery simulator are connected with the electric drive assembly 1; the cooling circulating water machine is used to supply cooling water to the electric drive assembly 1.

[0036] In this embodiment, the environmental box provides a closed and adjustable environment for the tooling, which can simulate various working conditions such as temperature and humidity, and effectively test the equipment. Its structure can resist external environmental interference and ensure the accuracy of the test. The battery simulator is directly connected to the positive and negative electrodes of the electric drive assembly 1. The battery simulator can simulate various battery states and is used to test the performance of the electric drive assembly under different power and voltage conditions. The cooling circulating water machine is set to allow the system to maintain an appropriate working temperature during testing, preventing the electric drive assembly 1 from overheating and causing performance degradation or damage, ensuring the reliability of the test data.

[0037] Further, in an embodiment, the data monitoring processing module is also included for calculating the acceleration and deceleration slope; the test module includes a host computer and an instruction transmission module, the host computer is in communication connection with the data monitoring processing module and obtains the acceleration and deceleration slope, and the host computer inputs the test parameters and the acceleration and deceleration slope to the electric drive assembly operation control module through the instruction transmission module.

[0038] In this embodiment, the main function of the data monitoring processing module is to calculate the acceleration and deceleration slope, which is very important for testing the performance of the electric drive assembly 1 under acceleration and deceleration conditions, and real-time data analysis. The host computer is responsible for communication with the data monitoring processing module and obtains the acceleration and deceleration slope from it. It is the control center of the system and can adjust the test process in real time. The instruction transmission module is responsible for transmitting the test parameters and the acceleration and deceleration slope generated by the host computer to the operation control module of the electric drive assembly, ensuring that the electric drive assembly can work according to the real-time analysis results. The data monitoring processing module can analyze data in real time, so that the operating parameters of the electric drive assembly can be adjusted during the test to obtain more accurate test results. By calculating the acceleration and deceleration slope, the host computer can dynamically adjust the test conditions to evaluate the performance of the electric drive assembly in the best way. It is necessary to know that the data monitoring processing module has sufficient acquisition frequency to support accurate data monitoring under rapidly changing working conditions.

[0039] Further, in an embodiment, the data monitoring processing module is in communication connection with the host computer based on the NIOPC server; the host computer is in communication connection with the instruction transmission module based on the TCP / IP protocol; the electric drive assembly operation control module is in communication connection with the instruction transmission module based on the CAN1 interface message; the environmental box is in communication connection with the instruction transmission module based on the CAN0 interface message; and the cooling circulating water machine is in communication connection with the instruction transmission module based on the CAN2 interface message.

[0040] In this embodiment, the data monitoring processing module uses the NIOPC server to provide a standardized communication protocol, so that devices from different manufacturers can easily exchange data, enhancing the interoperability of the system. The host computer communicates with the instruction transmission module through the TCP / IP protocol, making the data transmission highly stable and flexible, supporting long-distance communication and distributed system architecture. The instruction transmission module communicates with the electric drive assembly operation control module through the CAN1 interface, with the environmental box through the CAN0 interface, and with the cooling circulating water machine through the CAN2 interface. It uses CAN bus technology, has high anti-interference ability and real-time communication characteristics, receives instructions from the host computer and converts them into a communication format suitable for each downstream device, and is responsible for data distribution. The design of the entire system enables real-time response to data transmission and command execution, making it suitable for tests that require dynamic performance, and the system is easier to expand and integrate new hardware devices.

[0041] Further, in an embodiment, the host computer is configured to acquire current state values of the environmental box, the cooling circulating water machine, and the tooling, and transmit the current state values to the data monitoring processing module; the data monitoring processing module is configured to process the current state values and transmit fault codes to the host computer, and the host computer is configured to control start and stop of the electric drive assembly and working states of the environmental module based on the fault codes.

[0042] In this embodiment, the host computer acquires current state values of the environmental box, the cooling circulating water machine, and the tooling, including temperature, humidity, pressure, water quantity, and other monitoring data. The data monitoring processing module processes the current state values of the environmental box, the cooling circulating water machine, and the tooling received from the host computer, determines whether there is a fault, generates a fault code, and transmits the fault code back to the host computer; the host computer receives and processes the fault code sent by the data monitoring processing module, controls the start and stop states of the electric drive assembly and the working states of the environmental module according to the fault code; the host computer periodically or according to a trigger condition requests current state values from the environmental box, the cooling circulating water machine, and the tooling, and each submodule feeds back its state values to the host computer; the data monitoring processing module analyzes these state values, and if it detects an abnormal state exceeding a set threshold, it determines that there is a fault. Through fast data transmission and processing mechanisms, real-time monitoring and fault response can be achieved. Through environmental monitoring and fault detection mechanisms, the electric drive assembly and related facilities can operate in a safe and stable state, reducing potential damage.

[0043] In a second aspect, a method for durability testing of an electric drive assembly speed loop is provided, which includes selecting an operation mode and setting test parameters based on the test requirements and the speed-up and speed-down slopes of the electric drive assembly speed loop durability test system, starting the speed loop durability test of the electric drive assembly in the tooling, the test module transmitting the operation mode and test parameters to the electric drive assembly operation control module, the electric drive assembly operation control module controlling the start and stop and speed of the electric drive assembly based on the test parameters and the speed-up and speed-down slopes, and real-time acquisition of the current state of the environment module and the electric drive assembly, and sending a speed-down instruction to stop the electric drive assembly speed loop durability test as soon as an abnormality is identified.

[0044] Through this test method, the purpose of the test is clear, and appropriate operation modes such as constant speed mode, acceleration mode, deceleration mode and cyclic acceleration and deceleration mode are selected according to the functions and working conditions to be achieved by the test; the duration of each test stage is determined in order to record the performance of the system under different conditions. The slopes of the speed-up and speed-down are set, which affect the speed-up and speed-down of the electric drive assembly 1, and are usually adjusted according to the design specifications of the product. The electric drive assembly 1 is started, and the speed loop durability test is started according to the selected operation mode and the set speed-up and speed-down slopes. The real-time data are continuously observed, and abnormal conditions are monitored through the set threshold value, and a speed-down instruction is immediately issued to control the electric drive assembly 1 to gradually reduce the speed. The electric drive assembly is finally stopped safely to prevent damage to the equipment. During the test, all important test data are recorded, including the running time, the speed change, the abnormal events and the corresponding environmental data; the above steps outline a systematic electric drive assembly speed loop durability test method, covering various aspects from test requirement analysis to abnormal response. Through this method, the electric drive assembly 1 can be effectively evaluated.

[0045] The beneficial effects brought by the present application include:

[0046] The support base 3 provides stable support, and the multiple shock-absorbing energy-consuming seats 2 arranged on the top of the support base 3 are used to install the electric drive assembly 1, which can protect the stator and the rotor to a certain extent by reducing the probability of shaking of the electric drive assembly 1, avoiding scratches between the stator and the rotor, and improving the safety and accuracy of the test. The electric drive assembly installed on the shock-absorbing energy-consuming seat is responsible for providing power and conducting performance tests, and its design ensures effective operation under high-speed and low-torque working conditions; the shock-absorbing compression spring 4 installed on the shock-absorbing energy-consuming seat 2 can absorb and alleviate the adverse effects caused by vibration or impact based on the vibration of the electric drive assembly 1, further improving the safety and stability of the test. The control module installed on the tool is responsible for monitoring and adjusting the running state of the electric drive assembly 1 to ensure its accuracy and higher response speed during the test process. The test module is connected with the running control module, which is used to receive the test parameters and the lifting speed slope input by the user. The design of this module ensures flexibility, so that various tests can be carried out under different conditions. The electric drive assembly vibration problem is solved from two aspects: on the one hand, by controlling and slowing down the lifting of the electric drive assembly 1 speed, reducing the update interval of the lifting speed slope, thereby reducing the shaking of the electric drive assembly, which is the cause of the vibration; on the other hand, based on the generation of vibration and the inability to eliminate this shaking, the tool is set to suppress this vibration. Thus, the problem of the existing technology that the update interval of the lifting speed slope is too large, the electric drive assembly 1 shakes violently, and the shaking of the electric drive assembly 1 is not effectively suppressed in the electric drive assembly 1 speed ring durability test is solved.

[0047] It should be noted that the above sequence numbers of the embodiments of the application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0048] The terms "comprising" and "having" and any variations thereof in the specification and claims and the above drawings are intended to cover not exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" and the like descriptions are used to distinguish different objects, and do not represent the order or limit the types of "first", "second" and "third".

[0049] In the description of the embodiments of the application, "exemplary", "for example" or "for instance" is used to represent as an example, illustration or description. Any embodiment or design scheme described as "exemplary", "for example" or "for instance" in the embodiments of the application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. On the contrary, the words "exemplary", "for example" or "for instance" are intended to present the relevant concept in a specific manner.

[0050] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in the text only describes the relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone, and in addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0051] In some processes described in the embodiments of the present application, a plurality of operations or steps are included, which appear in a specific order, but it should be understood that these operations or steps can be executed or executed in parallel without the order in which they appear in the embodiments of the present application, and the serial number of the operation is only used to distinguish different operations, and the serial number itself does not represent any execution order. In addition, these processes can include more or fewer operations, and these operations or steps can be executed in sequence or in parallel, and these operations or steps can be combined.

[0052] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and the necessary general hardware platform, of course, it can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, an optical disk) as described above, and includes a plurality of instructions for making a terminal device execute the method described in each embodiment of the present application.

[0053] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A speed ring durability testing system for an electric drive assembly, characterized in that, It includes: The tooling includes a support base (3) with multiple shock-absorbing and energy-dissipating seats (2) on the top. An electric drive assembly (1) is mounted on a plurality of said shock-absorbing energy-dissipating seats (2), and said shock-absorbing energy-dissipating seats (2) are provided with shock-absorbing compression springs (4). An electric drive assembly operation control module is installed on the tooling. A test module, which is connected to the electric drive assembly operation control module, is used to input test parameters and acceleration / deceleration slopes to the electric drive assembly operation control module; An environmental chamber and an environmental module are provided. The tooling is housed in the environmental chamber, and the environmental chamber is used to provide the required testing environment for the tooling. The environmental module includes a battery simulator and a cooling water circulation machine. The positive and negative terminals of the battery simulator are connected to the electric drive assembly (1). The cooling water circulation machine is used to supply cooling water to the electric drive assembly (1). The data monitoring and processing module is used to calculate the acceleration / deceleration slope; the test module includes a host computer and an instruction transmission module. The host computer is communicatively connected to the data monitoring and processing module and obtains the acceleration / deceleration slope. The host computer also inputs test parameters and the acceleration / deceleration slope to the electric drive assembly operation control module through the instruction transmission module. The electric drive assembly operation control module is used to control the start-up, shutdown, and speed of the electric drive assembly according to the test parameters and the acceleration / deceleration slope; The host computer is used to acquire the current status values ​​of the environmental chamber, the cooling water circulator, and the tooling, and transmit the current status values ​​to the data monitoring and processing module; the data monitoring and processing module is used to process the current status values ​​and transmit fault codes to the host computer, and the host computer controls the start and stop of the electric drive assembly and the working status of the environmental module based on the fault codes; The data monitoring and processing module communicates with the host computer via an NI OPC server; the host computer communicates with the instruction transmission module via a TCP / IP protocol; the electric drive assembly operation control module communicates with the instruction transmission module via a CAN1 interface message; the environmental chamber communicates with the instruction transmission module via a CAN0 interface message; and the cooling water circulating machine communicates with the instruction transmission module via a CAN2 interface message.

2. The electric drive assembly speed ring durability testing system as described in claim 1, characterized in that: The shock-absorbing energy-dissipating seat (2) is provided with a tooling plate (7); Multiple shock-absorbing and energy-dissipating bases (2) form a first area for mounting the electric drive assembly (1), which is mounted on multiple shock-absorbing and energy-dissipating bases (2) by corresponding connection with the tooling plate (7).

3. The electric drive assembly speed ring durability testing system as described in claim 2, characterized in that: The shock-absorbing energy-dissipating base (2) includes a shock-absorbing base plate (21), a fixing column (22), and a mounting plate (23); The shock-absorbing base plate (21) and the mounting plate (23) are connected by the shock-absorbing compression spring (4), the fixing column (22) is fixed on the shock-absorbing base plate (21), and the mounting plate (23) is detachably connected to the support base (3); The tooling plate (7) is mounted on the fixed column (22).

4. The electric drive assembly speed ring durability testing system as described in claim 3, characterized in that: The support base (3) includes a support platform (31) and a support column (32); Two of the support columns (32) are spaced apart on both sides of the bottom of the support platform (31) to form a first space (5) for construction vehicles to enter and exit. The mounting plate (23) is detachably connected to the top of the support platform (31).

5. The electric drive assembly speed ring durability testing system as described in claim 4, characterized in that: The support platform (31) is provided with screw grooves (6) at intervals. The mounting plate (23) is provided with mounting holes (231), and the mounting plate (23) is detachably connected to the support platform (31) by bolts passing through the mounting holes (231) and being placed in the corresponding screw groove (6).

6. A method for endurance testing of the speed ring of an electric drive assembly, characterized in that, It includes: Provides the electric drive assembly speed ring durability testing system as described in claim 1; Based on the test requirements and acceleration / deceleration slope of the electric drive assembly speed loop durability test system, select the operating mode and set the test parameters to start the speed loop durability test on the electric drive assembly in the tooling. The test module transmits the operating mode and test parameters to the electric drive assembly operation control module, which controls the start-up, shutdown and speed of the electric drive assembly based on the test parameters and the acceleration / deceleration slope. The system acquires the current status of the environmental module and the electric drive assembly in real time. If an abnormality is detected, it immediately sends a speed reduction command to stop the electric drive assembly speed ring durability test.

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