The invention provides a differential protection method and device, a vehicle, electronic equipment and a storage medium. The method comprises the steps that the first rotating speed and the output torque of a motor at the current moment and the second rotating speed of the motor at the moment before the current moment are obtained; determining a rotating speed change rate of the motor according to the first rotating speed and the second rotating speed; judging whether the rotating speed change rate exceeds a preset threshold value or not; under the condition that the rotating speed change rate exceeds the preset threshold value, if the output torque is larger than the target torque, the output torque of the motor is reduced to the target torque; the target torque is used for representing a safe torque value corresponding to the rotating speed change rate. And the rotating speed change rate is compared with a preset threshold value, whether the differential protection range is entered or not is judged, and when the output torque is larger than the target torque, the output torque is limited according to the target torque. As the measurement precision and speed of the motor controller on the motor rotating speed signal are far higher than those of a wheel speed mode, the differential mechanism is protected through the motor rotating speed change rate, the response is faster, and the differential mechanism is protected more reliably.

    本发明提供一种差速器保护方法、装置、车辆、电子设备及存储介质,获取当前时刻电机的第一转速和输出扭矩,以及在当前时刻的前一时刻的电机的第二转速;根据第一转速和第二转速确定电机的转速变化率;判断转速变化率是否超过预设阈值;在转速变化率超过预设阈值的情况下,若输出扭矩大于目标扭矩,则降低电机的输出扭矩至目标扭矩;目标扭矩用于表征与转速变化率对应的安全扭矩值。将转速变化率与预设阈值比较,判断是否进入差速器保护范围,在输出扭矩大于目标扭矩时,将输出扭矩按目标扭矩进行限制。由于电机控制器对于电机转速信号的测量精度和速度远高于通过轮速的方式,故通过电机转速变化率去保护差速器,响应更快且对差速器保护更可靠。


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    Titel :

    Differential protection method and device, vehicle, electronic equipment and storage medium


    Weitere Titelangaben:

    差速器保护方法、装置、车辆、电子设备及存储介质


    Beteiligte:
    OUYANG XIANGYU (Autor:in) / QING HUIBIN (Autor:in) / YANG DE (Autor:in) / TIAN MENG (Autor:in)

    Erscheinungsdatum :

    2024-05-31


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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