The central electric drive assembly integrates the drive motor and the gearbox to replace the traditional engine and gearbox, but still requires a drive shaft and a traditional axle. In terms of arrangement form, it is similar to traditional automobile powertrain. Moreover, the transmission line is long, the energy loss is large, and the system efficiency is low; the bottom space is occupied by a large amount, which makes it difficult to arrange the power battery. Based on a “plug-and-drive” design approach, CeTrax can be integrated into current vehicle platforms without major changes to the chassis, front and rear axles or differentials. The maximum output and peak torque reach 300 kW and 4400 N·m respectively.
The integrated electric drive axle (parallel shaft/coaxial/vertical shaft) integrates the traditional drive axle and the motor, and the motor is directly used to drive the wheels after deceleration and torque increase. Save the previous components such as drive shafts and suspension brackets, which makes the cost of loading lower; the transmission efficiency is high; the space occupied is small, and the layout of the power battery pack is more convenient; the effect is poor in NVH; The lower mass is large and biased, and the controllability of the vehicle is not high.