New energy commercial vehicle driving motor AMT power system test bench
By designing the AMT power system test bench for the drive motor of new energy commercial vehicle, the problem of inability to simulate the working conditions of the actual vehicle in the existing technology is solved, and efficient functional performance and control strategy testing is achieved, reducing the real vehicle verification work.
Patent Information
- Application Number
- CN202422298120.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing test bench for new energy electric drive system of heavy-duty commercial vehicles cannot perform real-vehicle working conditions simulation loading of the drive motor AMT, which limits the test range, and the traditional HIL test system cannot perform functional performance testing and control strategy verification of power-level three-electric system.
Design a test bench for driving motor AMT power system for new energy commercial vehicle, including a power dynamometer, driving motor AMT power system, motor controller MCU, power battery and vehicle controller VCU. The system functions are connected through the CAN bus and Ethernet to simulate various working conditions and perform control parameters calibration.
The real-vehicle working condition reduction degree is improved, and the subsequent test and calibration work of the actual vehicle verification process is reduced, so as to realize the testing and verification of the functional performance and control strategy of the drive motor AMT system.
Smart Images
Figure CN223166342U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of commercial vehicles, in particular to a test bench for a driving motor AMT power system of a new energy commercial vehicle. Background Technique
[0002] At present, most of the test benches for new energy electric drive systems of heavy commercial vehicles are used for performance testing of single driving motors and cannot simulate the actual vehicle working conditions and load of the driving motor AMT, which limits the application scope of the driving motor test bench; the three-electric system, namely the power battery, driving motor, motor controller and vehicle controller of new energy vehicles; the traditional HIL test system conducts signal and functional logic tests based on the new energy three-electric system model and cannot conduct power-level new energy three-electric system functional performance tests and control strategy verification. Summary of the Invention
[0003] The utility model provides a test bench for a driving motor AMT power system of a new energy commercial vehicle, which has a high degree of restoration of actual vehicle working conditions, a flexible system functional structure, can be configured according to different new energy heavy truck power system structures to realize the simulation of various working conditions, and can carry out calibration of relevant control parameters, reducing the relevant tests and calibration work in the subsequent actual vehicle verification link.
[0004] In order to solve the problems in the above background technique, the utility model is realized through the following technical solutions:
[0005] A test bench for a driving motor AMT power system of a new energy commercial vehicle, including a test bench, the test bench is provided with an electric dynamometer, a driving motor AMT power system and a motor controller MCU, one end of the driving motor AMT power system is connected to the electric dynamometer, and the other end of the driving motor AMT power system is connected to a power battery through the motor controller MCU; the driving motor AMT power system, the motor controller MCU and the power battery are respectively connected to a measurement and control cabinet through a CAN bus, and the measurement and control cabinet is connected to a dynamometer frequency conversion cabinet through an Ethernet.
[0006] Preferably, the driving motor AMT power system is provided with a transmission controller TCU, and the transmission controller TCU is connected to the measurement and control cabinet through a CAN bus.
[0007] Preferably, a vehicle controller VCU is arranged in the measurement and control cabinet, and the driving motor AMT power system, the motor controller MCU and the power battery are respectively connected to the vehicle controller VCU through a CAN bus.
[0008] Preferably, the electric dynamometer is provided with a transmission shaft. The driving motor AMT power system is connected to the transmission shaft. The transmission shaft is also provided with a torque meter, and the torque meter is located between the driving motor AMT power system and the electric dynamometer.
[0009] Compared with the prior art, the utility model has the following beneficial technical effects:
[0010] The vehicle controller VCU receives and combines each control instruction of the upper computer control device in the measurement and control cabinet to send a real-time torque request to the motor controller MCU. The transmission controller TCU receives the motor speed and vehicle speed signals, and automatically adjusts the transmission gear according to the upshift and downshift control strategy. The vehicle model calculates the transmission output shaft speed according to the current working condition vehicle speed, slope and the current transmission gear, controls the electric dynamometer to simulate the working condition vehicle speed operation, optimizes some peak working condition points in the preset real vehicle working conditions, and ensures that the upper limit of the transmission output torque is within the measurement range of the electric dynamometer, so as to realize the test verification of the function performance and control strategy of the driving motor AMT system according to the preset working conditions by the system. The real vehicle working condition restoration degree is high, the system function structure is flexible, the model configuration can be carried out according to the structures of different new energy heavy truck power systems, various working conditions can be simulated, and the relevant control parameters can be calibrated, reducing the relevant tests and calibration work in the subsequent real vehicle verification link. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is a structural schematic diagram of the utility model;
[0012] REFERENCE SIGNS
[0013] 1. Test bench; 2. Electric dynamometer; 3. Driving motor AMT power system; 4. Motor controller MCU; 5. Power battery; 6. CAN bus; 7. Measurement and control cabinet; 8. Dynamometer frequency conversion cabinet; 9. Transmission controller TCU; 10. Vehicle controller VCU; 11. Torque meter. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.
[0015] In the description of the present utility model, it should be noted that the orientation or positional relationship such as "front", "rear", "upper", "lower", etc. in the description is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the present utility model is habitually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0016] At present, the research on improving the performance of electric vehicles usually focuses on batteries, energy management, and drive control strategies, and rarely involves the structure of the power system. At present, most electric vehicle power systems adopt the structure of a drive motor + a single-stage reducer. The drive motor AMT power system 3 also belongs to this structure, that is, a drive motor + an AMT power system.
[0017] As Figure 1 shown, a test bench for a drive motor AMT power system of a new energy commercial vehicle includes a test bench 1. The test bench is provided with an electric dynamometer 2, a drive motor AMT power system 3, and a motor controller MCU4. One end of the drive motor AMT power system 3 is connected to the electric dynamometer 2, and the other end of the drive motor AMT power system 3 is connected to a power battery 5 through the motor controller MCU4. The drive motor AMT power system 3, the motor controller MCU4, and the power battery 5 are respectively connected to a measurement and control cabinet 7 through a CAN bus 6, and the measurement and control cabinet 7 is connected to a dynamometer frequency conversion cabinet 8 through an Ethernet network.
[0018] The drive motor AMT power system 3 is provided with a transmission control unit TCU9, and the transmission control unit TCU9 is connected to the measurement and control cabinet 7 through a CAN bus 6.
[0019] A vehicle controller VCU10 is provided in the measurement and control cabinet 7. The drive motor AMT power system 3, the motor controller MCU4, and the power battery 5 are respectively connected to the vehicle controller VCU10 through a CAN bus 6.
[0020] The electric dynamometer 2 is provided with a transmission shaft. The drive motor AMT power system 3 is connected to the transmission shaft, and a torque meter 11 is also provided on the transmission shaft, and the torque meter 11 is located between the drive motor AMT power system 3 and the electric dynamometer 2.
[0021] In a feasible embodiment, the measurement and control cabinet 7 further includes a control model operation device, a signal IO and processing device, a signal integration and conversion device, and a host computer control device. The devices are connected through a high-speed communication network to realize the issuance of various control instructions and the acquisition of the operating states and parameters of the drive motor AMT power system 3 and the dynamometer frequency conversion cabinet 8.
[0022] Build a CAN bus network in the signal IO and processing device, and the topology structure setting is consistent with the actual vehicle setting. The signal IO and processing device are used for the processing and input / output control of various analog signals, digital signals, and bus signals of the dynamometer frequency conversion cabinet 8 and the sample under test. The upper computer control device includes various dynamometers, driving controls, and display controls. Each input / output signal during model operation is forwarded to the vehicle controller VCU10 through the signal integration conversion device and the signal IO and processing device. At the same time, each driving control instruction and vehicle parameter setting in the upper computer control device are also forwarded to the vehicle controller VCU10 and the control model through the signal IO and processing device. Based on this, the vehicle controller VCU10 can achieve various driving function controls for the tested drive motor AMT power system 3.
[0023] The driver model automatically adjusts the opening degrees of the accelerator and brake pedals according to the preset working condition vehicle speed and the current vehicle speed. The vehicle controller VCU10 receives and combines each control instruction in the upper computer control device to send a real-time torque request to the motor controller MCU4. The transmission controller TCU9 receives the motor speed and vehicle speed signals and automatically adjusts the transmission gear according to the upshift and downshift control strategy. The vehicle model calculates the transmission output shaft speed based on the current working condition vehicle speed, slope, and the current transmission gear, and controls the dynamometer frequency conversion cabinet 8 to operate at the simulated working condition vehicle speed. Optimize some peak working condition points in the preset actual vehicle working conditions to ensure that the upper limit of the transmission output torque is within the measurement range of the dynamometer frequency conversion cabinet 8, so as to realize the test verification of the functional performance and control strategy of the drive motor AMT power system 3 according to the preset working conditions.
Claims
1. A test bench for a driving motor AMT power system of a new energy commercial vehicle, characterized in that: It includes a test bench (1), on which a dynamometer (2), a driving motor AMT power system (3) and a motor controller MCU (4) are provided. One end of the driving motor AMT power system (3) is connected to the dynamometer (2), and the other end of the driving motor AMT power system (3) is connected to a power battery (5) through the motor controller MCU (4). The driving motor AMT power system (3), the motor controller MCU (4) and the power battery (5) are respectively connected to a measurement and control cabinet (7) through a CAN bus (6), and the measurement and control cabinet (7) is connected to a dynamometer frequency conversion cabinet (8) through an Ethernet.
2. The test bench for the drive motor AMT power system of a new energy commercial vehicle according to claim 1, wherein The driving motor AMT power system (3) is provided with a transmission control unit TCU (9), and the transmission control unit TCU (9) is connected to the measurement and control cabinet (7) through a CAN bus (6).
3. The test bench for the AMT power system of the drive motor of a new energy commercial vehicle according to claim 2, characterized in that, A vehicle controller VCU (10) is provided in the measurement and control cabinet (7), and the driving motor AMT power system (3), the motor controller MCU (4) and the power battery (5) are respectively connected to the vehicle controller VCU (10) through a CAN bus (6).
4. The test bench for the AMT power system of the drive motor of a new energy commercial vehicle according to claim 1, characterized in that The dynamometer (2) is provided with a transmission shaft, the driving motor AMT power system (3) is connected to the transmission shaft, and a torque meter (11) is also provided on the transmission shaft, and the torque meter (11) is located between the driving motor AMT power system (3) and the dynamometer (2).