Research On Test Bench Technique For Electric Wheel

With the increasingly serious environmental problems and energy issues, theelectric vehicles also develop rapidly. Electric wheel module, as the key component ofelectric vehicles, of which the performance and reliability its in-wheel motor has adecisive impact on vehicle performance. Using the bench test instead of the morecommon road test, research and development cycle and input costs of the electricvehicle can be shorted, thus improving its development efficiency. Therefore, theresearch and development of electric wheel test bench has a very important significancefor electric wheel various experiments.The main work of this thesis is to do related research and build the electric wheeltest bench. Combined with basic structure of the electric wheel and the performance ofwheel motor, this thesis analyzes the basic functions of the electric wheel test bench. Inorder to enlarge range of the use, the thesis adopts modular design to develop theelectric wheel test bench. According to the function of the test bench and the modulardesign idea, the test bench is compartmentalized into six modules: dynamometer systemmodule, inertia imitation module, load imitation module, connection transmissionmodule, motor control module and power module. Based on all this above, the overalllayout of the test bench is designed.According to the division of the module and the layout, the key components ofdynamometer system such as the dynamometer, sensors and the measuring instrumentsare designed and chosen firstly. And then, by the force analysis of the electric wheel inthe actual working conditions and comparison of different loading scheme, the electricwheel loading mechanism is designed. At last, according to the actual situation of thetest bench, the inertia simulation, the drum system and the connecting parts are designed.Through the above selection and design, the construction and the operation of theelectric wheel test bench is completed and carried out, which shows that theperformance of the test bench is valid.