The invention discloses a multistage fixed-point power generation control method for an extended-range electric vehicle. The method comprises the following steps that S1, a VCU is powered on and initialized; s2, whether the driving mode selected by the driver is enhanced is judged, if yes, the step S3 is executed, and if not, the step S3 is repeated; s3, judging whether the SOC of the battery is greater than a threshold value (the whole vehicle has no serious fault, and the APU system has no power reduction operation fault), if so, entering the step S4, and if not, repeating the step; s4, judging whether the driving power is smaller than or equal to the peak discharge capacity of the battery or whether the APU power generation power is larger than or equal to the total power demand of the whole vehicle, if yes, entering the step S5, and if not, entering the step S6; s5, entering first-stage fixed-point power generation control; and S6, entering second-stage fixed-point power generation control. According to the method, the problem that the NVH performance becomes poor and the car using experience of customers is affected due to repeated transverse jumping of the engine rotating speed after the fixed-point control enters the following control is solved.

    本发明公开了一种增程式电动汽车多级定点发电控制方法,包括以下步骤:步骤S1,VCU上电初始化;步骤S2,判断驾驶员选择驱动模式是否为增强,若是则进入步骤S3,若否则重复此步骤;步骤S3,判断电池SOC是否大于阀值(且整车无严重故障,且APU系统无降功率运行故障),若是则进入步骤S4,若否则重复此步骤;步骤S4,判断驱动功率是否小于等于电池的峰值放电能力,或APU发电功率是否大于等于整车总的功率需求,若是则进入步骤S5,若否则进入步骤S6;步骤S5,进入第一级定点发电控制;步骤S6,进入第二级定点发电控制。本发明解决了定点控制进入跟随控制后的发动机转速反复横跳带来的NVH表现变差,影响客户用车体验的问题。


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    Title :

    Multi-stage fixed-point power generation control method for extended-range electric vehicle


    Additional title:

    一种增程式电动汽车多级定点发电控制方法


    Contributors:
    ZHANG YA'NAN (author) / XU LICHENG (author) / LI PENG (author)

    Publication date :

    2024-08-02


    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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