On-off circuit for preventing motor controller from being damaged and automobile

The utility model discloses an on-off circuit for preventing a motor controller from being damaged and an automobile. At least one controllable on-off device is arranged between the motor controller and a three-phase winding of a motor; and when it is detected that the motor controller enters fault processing, the controllable on-off device is controlled to be in an off state, so that the motor is in an open-circuit operation state, and damage to a power device caused by impact current is avoided. 本实用新型公开一种防止电机控制器损坏的通断电路和汽车，通过在电机控制器和电机的三相绕组之间设置有至少一个可控通断装置；当检测到电机控制器进入故障处理时，控制可控通断装置处于断开状态，从而使电机处于开路运行状态，避免冲击电流对功率器件造成损伤。