The invention discloses a double-axle motor automobile torque limiting method and system and a vehicle, and the method comprises the following steps: based on the intention of a driver, obtaining the ratio of target torques of a front axle motor and a rear axle motor based on the intention of the driver; based on the current, the voltage and the power of real-time operation of the vehicle, the maximum power allowed by the power battery for driving is obtained; obtaining a difference value delta p between the real-time allowable discharge maximum power of the battery and the current power consumed by the rear axle motor; regulating and controlling the torque of front and rear axle motors based on the delta p; the torque of the front and rear axle motors is limited, so that the implementation discharge power of the power battery does not exceed the real-time allowable discharge maximum power of the power battery, the safety of the system is improved, and the power battery is prevented from being damaged; and if the power battery is not allowed to be used, the driving torques of the front axle motor and the rear axle motor are synchronously output to be zero at the same time, the abnormal torque state that one motor drives and the other motor brakes is avoided, and the running safety of the vehicle is guaranteed.
本发明公开了一种双桥电机汽车转矩限制方法、系统及车辆,该方法包括如下步骤:基于驾驶员意图,获取前后桥电机基于驾驶员意图目标转矩的比值;基于车辆实时运行的电流、电压和功率,获取动力电池允许用于驱动的最大功率;获取电池实时允许放电最大功率与当前后轴电机所消耗的功率的差值Δp;基于Δp调控前后桥电机的转矩;对前后桥电机的转矩进行限制,保证动力电池的实施放电功率不超出动力电池实时允许放电最大功率,提高了系统的安全性,避免动力电池损坏;若动力电池不允许被使用时,前后桥电机驱动扭矩均同时同步输出为零,不会出现一个电机驱动、另一个电机制动的异常扭矩状态,保证车辆行驶的安全性。
Torque limiting method and system for double-axle motor vehicle and vehicle
一种双桥电机汽车转矩限制方法、系统及车辆
01.11.2022
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |