The invention relates to gear control of a pure electric vehicle, in particular to a gear unlocking control method of the pure electric vehicle. The invention provides a pure electric vehicle gear unlocking control method aiming at a gear lock on a pure electric vehicle. The control method is realized by the following steps that: 1) a VCU (vehicle control unit) receives an ignition signal and an IMMO request of a BCM (body control module); 2) the electronic gear controller GSM receives a brake signal of the VCU and the validity of the brake signal; 3) the GSM sends a gear signal to the VCU and judges whether the gear signal is a P gear or not; 4) the GSM detects whether a brake signal is equal to 1 and the effectiveness of the brake signal is equal to 1 or not if the gear signal is in the P gear, a P-gear electromagnetic valve is unlocked if so, and the P-gear electromagnetic valve is locked if not; 5) the P-gear electromagnetic valve is locked if the gear signal is not in the P gear; and 6) the GSM receives a vehicle speed signal of the ESC controller, the P-gear electromagnetic valve is unlocked if the vehicle speed signal is larger than or equal to a threshold value a, and the P-gear electromagnetic valve is locked if the vehicle speed signal is smaller than the threshold value a.

    本发明涉及纯电动汽车的挡位控制,具体为一种纯电动汽车挡位解锁控制方法。针对纯电动汽车上的挡位锁,提供一种纯电动汽车挡位解锁控制方法。该控制方法是由如下步骤实现的:1)整车控制器VCU接收车身控制器BCM的点火信号及IMMO请求;2)电子挡位控制器GSM接收VCU的刹车信号及刹车信号有效性;3)GSM向VCU发送挡位信号,并判断挡位信号是否为P挡;4)如果是P挡,GSM检测是否刹车信号=1且刹车信号有效性_=1,如果是,P挡电磁阀解锁,如果不是,P挡电磁阀锁止;5)如果挡位信号不是P挡,P挡电磁阀锁止;6)GSM接收ESC控制器的车速信号,如果大于等于阈值a,P挡电磁阀解锁,如果小于阈值a,P挡电磁阀锁止。


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    Title :

    Gear unlocking control method for pure electric vehicle


    Additional title:

    一种纯电动汽车挡位解锁控制方法


    Contributors:
    QIAO SHIJUN (author) / ZHANG WENJUN (author) / LU YINHANG (author)

    Publication date :

    2021-06-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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