The invention belongs to the technical field of automobile power transmission systems, and particularly relates to an electric multi-gear speed change system, an electric drive assembly and a vehicle chassis, two two-gear speed reduction systems are combined to form four-gear speed change power output, the front end is a high-speed speed reduction part, one-stage speed reduction design is adopted, and the rear end is a low-speed speed change part. Two-stage speed reduction design is adopted, power is output through three-stage speed reduction and speed change, the number of gear pairs is reduced, the weight and the size of a speed reduction system can be reduced, the input end can keep running at a high rotating speed, the energy efficiency is higher, and therefore the weight and the size of the electric drive assembly are smaller, and a high-speed small-torque motor with the smaller weight and the smaller size can be adopted. According to the electric drive assembly, the use amount of rare earth permanent magnet materials is reduced, the space occupied by installation of a vehicle chassis can be reduced through the electric drive assembly smaller in weight and size, more batteries can be installed on the chassis body, meanwhile, the energy efficiency of the electric drive assembly is higher, and the endurance mileage can be further increased.
本发明属于汽车动力传动系统技术领域,具体是涉及到一种电动多挡位变速系统、电驱动总成及车辆底盘,采用两个两挡减速系统组合形成四挡变速动力输出,前端的为高速减速部分,采用一级减速设计,后端为低速变速部分,采用两级减速设计,动力经过三级减变速输出,减少了齿轮对的数量,有利于降低减速系统的重量和体积,输入端可以保持在高转速运行,能效也更高,从而电驱动总成的重量和体积更小,可以采用重量和体积更小的高速小扭矩电机,减少了稀土永磁材料的用量,也使得车辆底盘,通过本重量和体积更小的电驱动总成,能够减少安装所占据的空间,使得底盘本体上可以安装更多的电池,同时电驱动总成的能效更高,能够进一步地提升续航里程。
Electric multi-gear speed change system, electric drive assembly and vehicle chassis
一种电动多挡位变速系统、电驱动总成及车辆底盘
2025-01-28
Patent
Electronic Resource
Chinese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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