The invention discloses a motor gear shifting control method of a hybrid electric vehicle, which comprises the following steps: after starting a motor gear shifting operation, determining a target rotating speed change rate of a motor; determining a motor compensation torque initial value according to the target rotating speed change rate of the motor; determining a first rotating speed difference value between the actual rotating speed and the target rotating speed of the motor at the gear shifting moment of the synchronizer; in the acceleration state, a first limit value corresponding to the first rotating speed difference value is determined according to a preset first corresponding relation; the motor compensation torque initial value is compared with a first limit value, if the motor compensation torque initial value is larger than the first limit value, the first limit value serves as a motor compensation torque final value, and if the motor compensation torque initial value is smaller than or equal to the first limit value, the motor compensation torque initial value serves as the motor compensation torque final value; and performing torque compensation on the motor according to the current motor compensation torque final value. Based on the technical scheme disclosed by the invention, the gear shifting synchronization time of the motor can be shortened in the process that the vehicle runs at a relatively high acceleration.

    本申请公开了一种混合动力汽车的电机换挡控制方法,包括:在启动电机换挡操作后,确定电机的目标转速变化率;根据电机的目标转速变化率确定电机补偿扭矩初值;确定在同步器进档时刻,电机的实际转速和目标转速的第一转速差值;当处于加速状态时,根据预设的第一对应关系确定与第一转速差值对应的第一限值;比较电机补偿扭矩初值和第一限值,如果电机补偿扭矩初值大于第一限值,则将第一限值作为电机补偿扭矩终值,如果电机补偿扭矩初值小于或等于第一限值,则将电机补偿扭矩初值作为电机补偿扭矩终值;根据当前的电机补偿扭矩终值对电机进行扭矩补偿。基于本申请公开的技术方案,在车辆以较大加速度行驶的过程中,能够缩短电机换挡同步时间。


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    Title :

    Motor gear shifting control method and device of hybrid electric vehicle


    Additional title:

    混合动力汽车的电机换挡控制方法及装置


    Contributors:
    PAN HAO (author) / WU WEIXIANG (author) / WANG PAN (author) / DONG ZHIYI (author) / WANG LUNZHEN (author)

    Publication date :

    2023-05-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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