A diagnostic device for a motor (6) in an electric vehicle that drives the wheels (2) thereof using the motor (6), the diagnostic device being provided with: a startup-time abnormality detection means (98) for, when the vehicle has been started but is not being driven, detecting the coil temperature of a motor coil (78) and the coil resistance or the insulation resistance of the motor coil (78), and detecting an abnormality in the motor coil (78) when the coil temperature exceeds a threshold, or when the coil resistance or insulation resistance exceeds a threshold;; and a driving-time abnormality detection means (99) for, when the vehicle is being driven, detecting the coil temperature, the number of revolutions of the motor, the applied voltage of the motor, and the motor current, and detecting an abnormality in the motor coil (78) when the coil temperature exceeds the threshold, or when the relationships between the applied voltage of the motor and the motor current in relation to the number of revolutions of the motor fall outside of a set range.
Diagnostic device for diagnosing a drive motor of an electric vehicle
2015-12-16
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
Electronic diagnostic method for electric drive train of motor vehicle
European Patent Office | 2024
|Drive device of motor vehicle drive train of electric vehicle
European Patent Office | 2023
|