车用驱动电机定子与机壳多采用过盈联接，合适的过盈量需要兼顾多方面需求。通过理论计算和有限元方法，考虑实际应用中的高低温工况，对设计过盈量下的联接强度及传递转矩进行校核。然后，通过仿真分析得到机壳止口变形量，并结合实测数据，进一步验证有限元方法可靠性。提供了一种过盈量有限元校核方法，可指导驱动电机定子组件过盈量和止口配合公差的设计。

Interference fit is mostly used between the stator and housing of vehicle driving motor, and the appropriate interference amount needs to meet various requirements. Through theoretical calculation and finite element method (FEM), considering the high and low temperature conditions in practical application, the connection strength and transmission torque under the design interference are checked. Then, through the simulation analysis, the deformation of housing rabbet is obtained. In combination with the measured data, the reliability of the FEM is further verified. The finite element checking method for interference can guide the design of the interference fit of stator assembly and the tolerance of housing rabbet of driving motors.