Motor controller, detection method and vehicle

The invention discloses a motor controller, a detection method and a vehicle. The motor controller comprises an insulation resistance module, a detection module and a humidity sensor. The detection module is connected with the insulation resistance module and used for detecting whether the insulation resistance module has an insulation fault; the detection module is further connected with the humidity sensor and used for detecting humidity information of the humidity sensor after it is judged that the insulation fault occurs. According to the method, after the motor controller breaks down, whether the motor controller breaks down is an insulation fault or not is analyzed firstly, if the motor controller breaks down, whether insulation is caused by environment humidity or not is considered, the reason for the fault in the motor controller can be rapidly and accurately judged, and the maintenance cost of the motor controller is reduced. 本发明公开了一种电机控制器、检测方法及车辆，该电机控制器包括：绝缘电阻模块、检测模块和湿度传感器；检测模块连接绝缘电阻模块，用于检测绝缘电阻模块是否发