AT4000—Four-motor (PHEV hybrid gearbox) performance test system

　　Topological structure diagram

　　AT4000—four-motor (PHEV hybrid gearbox) performance test system adopts modular and integrated design. The operating part is ergonomically designed and can complete manual/automatic mode control. It is composed of three parts: mechanical system, analog drive system, loading system, analog support system, electrical system and upper computer software system.

　　●Mechanical system: cast iron platform, drive simulation engine mechanical connection device, drive simulation generator mechanical connection device, drive simulation drive motor mechanical connection device, load connection device, shaft connection part and other equipment.

　　●Drive simulation engine system: high-speed low-inertia permanent magnet synchronous motor, high-speed torque and speed measuring device.

　　●Driving analog generator system: self-provided car motor.

　　● Drive analog electric drive system: high-speed low-inertia permanent magnet synchronous motor, (high-speed torque, speed measuring device optional).

　　●Loading system: low-speed and high-torque load dynamometer, high-torque and speed measuring device.

　　●Simulation guarantee system: Environmental warehouse, temperature control system and other equipment components.

　　●Electrical system: drive load controller, real-time data acquisition system, data acquisition, alarm system and other equipment.

　　●Software system: The upper computer test software is divided into data acquisition communication module, data acquisition setting module, data real-time exchange control module, and data processing module. The upper computer completes the functions of test control, data analysis and display, data recording and export according to the test items.

　　AT4000—Four-motor (PHEV hybrid gearbox) performance test system—system function

　　Basic range and accuracy:

　　●Recommended power range of simulated engine: 0~250KW power level, support other customization of other power, speed and torque levels;

　　●Measurement range of simulated engine speed: 0~10000r/min;

　　●Simulated engine torque measurement range: 0~500N.m;

　　●Recommended power range of analog electric drive system: 0~300KW power level, support other customization of other power, speed and torque levels;

　　●Rotation speed measurement range of analog electric drive system: 0~20000r/min;

　　●Torque measurement range of analog electric drive system: 0~500N.m;

　　●Recommended load power range: 0~310KW power level, support other customization of other power, speed and torque levels;

　　●Recommended output speed measurement range of load: 0~3300r/min;

　　●Recommended output torque measurement range for load: 0~3000-3700N.m;

　　●Speed ​​measurement accuracy: ±1r/min;

　　●Torque measurement accuracy: ±0.05%F.S;

　　Test items:

　　Transmission high-speed burn test, differential endurance test, transmission assembly reliability test, transmission efficiency test, high oil temperature test, hybrid control logic test, etc.

　　AT4000—Four-motor (PHEV hybrid gearbox) performance test system—Main features

　　01 Functional modularity

　　All the benches are built using functional modularity, and are combined into one test system in the form of a combination of modules. Customers can add or remove test modules according to different test objects.

　　02 Advanced measurement methods

　　Adopting advanced real-time measurement and control system, including input electrical parameter test, speed and torque test, etc., the torque and speed sampling rate is up to 1000Hz, which meets the high precision and fast response requirements of the test system, and provides transient data and characteristic value data, which is convenient for the software to test Comprehensive analysis of process data.

　　03 Complete test items

　　According to the test requirements specified in the national standard, test items can be added or removed according to the configuration module, which can meet the test items for various types of tests

　　04Environmental simulation equipment

　　Using compressor refrigeration and heating mode as the test piece environmental simulation equipment and temperature control system, the high temperature, low temperature, high humidity, low humidity environment of the test piece is simulated, which shortens the aging durability test time of the test piece, thereby increasing The entire R&D efficiency reduces the R&D cycle.

　　05 Simulated engine, simulated electric drive system

　　Using a low inertia permanent magnet synchronous motor as the system drive input improves the dynamic response characteristics of the torque and speed of the system, provides the measurement range and accuracy, improves the drive performance (forward/reverse), shortens the load response time, and can achieve arbitrary The loading of the load curve highly simulates the real-time operating conditions of the electric drive assembly.

　　06 Load Dynamometer

　　The high-torque low-speed dynamometer is used as the system loading, and the high-precision torque and speed sensors are used according to the characteristics of the tested part to increase the data dynamic response rate. The system loading adopts the vector/DTC mode to achieve the required high-speed dynamic loading characteristics. , So as to highly simulate the real-time operating conditions of the gearbox output.

　　07Humanized design

　　It adopts a professional (PHEV hybrid gearbox) test bench. The fixture has a quick clamping function and is easy to load and unload. It can be adapted to the installation of different hybrid gearboxes. The system operation is recommended to adopt a cabinet + computer desk control mode, which can complete a single position Complete the layout of all test operations.

　　08Customized testing software

　　The test system test software developed by the Sichuan Chengbang Software R&D team, according to the requirements of the national standard, classifies the software interface and process, reduces repeated tests, and greatly improves the work efficiency of testers. And it has the functions of real-time curve drawing, transient value capture, trend curve drawing and analysis, multi-parameter combination display, qualified judgment, report export and so on.

　　BSX4000—Three-motor (EV gearbox) performance test system—main application

　　●Passenger car hybrid system

　　●Logistics vehicle hybrid system