The invention discloses an electric vehicle two-gear transmission gear shifting method, a storage medium, electronic equipment and an electric vehicle. The gear shifting method for the two-gear transmission of the electric automobile comprises the steps that the wheel end required torque of a driving motor is obtained, and the shaft end target torque and the shaft end target rotating speed for achieving the wheel end required torque under two gears are calculated according to the wheel end required torque; a current bus voltage is obtained, and motor operation efficiency under the two gears isobtained according to the current bus voltage, the shaft end target torque under the two gears and the shaft end target rotating speed; the gear with higher motor operation efficiency in the two gears is taken as a target gear; and the gear of the electric automobile is switched to the target gear. According to the application, the motor operation efficiency under the two gears is calculated, andthe gears are selected based on the motor operation efficiency, so that the driving motor can be ensured to work in a high-efficiency interval under different electric quantities of the power battery.

    本申请公开了一种电动汽车两档变速器换档方法、存储介质、电子设备及电动汽车,电动汽车两档变速器换档方法,包括,获取驱动电机的车轮端需求扭矩,根据所述车轮端需求扭矩分别计算两个档位下实现所述车轮端需求扭矩的轴端目标扭矩和轴端目标转速;获取当前母线电压,根据所述当前母线电压、所述两个档位下的所述轴端目标扭矩和所述轴端目标转速得到两个档位下的电机运行效率;将所述两个档位中所述电机运行效率较高的档位作为目标档位;将电动汽车的档位切换至所述目标档位。本申请中通过计算出两个档位下的电机运行效率,基于电机运行效率选择档位,可以保证驱动电机在动力电池不同的电量下均工作在高效区间。


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    Title :

    Electric vehicle two-gear transmission gear shifting method, storage medium, electronic equipment and electric vehicle


    Additional title:

    电动汽车两档变速器换档方法、存储介质、电子设备及电动汽车


    Contributors:
    WU KANG (author)

    Publication date :

    2020-09-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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