The invention relates to a system and method for an axle torque safe electric vehicle. A torque safety system for a vehicle is provided. The system receives a signal from a sensor coupled to a motor shaft of an electric motor and determines an acceleration of the motor based on a signal from the sensor indicative of an amount of rotation of the motor shaft. The system determines an internal torque between the motor shaft and an input gear coupled to the motor shaft based on acceleration of the motor and inertia of the motor and the gearbox. A powertrain of a vehicle includes the gearbox and the electric motor, and the input gear couples the electric motor to the gearbox. The system determines whether the internal torque exceeds a threshold torque, and in response to determining that the internal torque exceeds the threshold torque, the system reduces a power output to the electric motor. The system also diagnoses a health of the gearbox.
本申请涉及用于轴扭矩安全电动车辆的系统及方法。提供了一种用于车辆的扭矩安全系统。所述系统从联接到电动机的电机轴的传感器接收信号,并且基于来自所述传感器的指示所述电机轴的旋转量的信号来确定所述电动机的加速度。所述系统基于所述电动机的加速度以及所述电动机和所述齿轮箱的惯性来确定所述电机轴与联接到所述电机轴的输入齿轮之间的内部扭矩。车辆的动力系包括所述齿轮箱和所述电动机,并且所述输入齿轮将所述电动机联接到所述齿轮箱。所述系统确定所述内部扭矩是否超过阈值扭矩,并且响应于确定所述内部扭矩超过所述阈值扭矩,所述系统减小对所述电动机的功率输出。所述系统还诊断齿轮箱的健康状况。
SYSTEM AND METHOD FOR AXLE TORQUE SAFETY ELECTRIC VEHICLE
用于轴扭矩安全电动车辆的系统及方法
09.09.2022
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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