The invention provides a driving method of a double-motor electric drive axle, the driving method is suitable for an electric drive axle framework, and the driving method comprises the following steps: acquiring a target vehicle speed and a target torque, searching a function relation linear curve corresponding to the target vehicle speed and the target torque in a preset curve database, and determining a driving mode according to a corresponding relation between the function relation linear curve and the driving mode. Determining a target total rotating speed and a target total efficiency of the first motor and the second motor according to the target vehicle speed, and judging that the real-time speed of the target vehicle is the target vehicle speed and the sum of the real-time rotating speeds of the first motor and the second motor is the target total rotating speed; the operation efficiency of the first motor and the second motor is controlled to be switched to the target total efficiency, and the target vehicle is driven to operate in the target driving mode; the problem that in the prior art, under the working condition that a vehicle runs at a high speed, due to the unicity of a driving mode and an inflexible motor torque distribution mode, the use efficiency of a motor is low is solved.
本发明提供了一种双电机电驱桥的驱动方法,该驱动方法适用于电驱桥架构,驱动方法包括获取目标车速与目标扭矩,在预设的曲线数据库中,查找与其对应的函数关系线性曲线,根据函数关系线性曲线与驱动模式的对应关系,得到与目标车速和目标扭矩对应的目标驱动模式,根据目标车速确定第一电机和第二电机的目标总转速与目标总效率,判断目标车辆的实时速度为目标车速且第一电机与第二电机的实时转速之和为目标总转速时,控制第一电机和第二电机的运行效率切换至目标总效率,以目标驱动模式驱动目标车辆运行;解决了现有技术中的车辆在高速行驶的工况下,由于驱动模式的单一性与不灵活的电机扭矩分配方式,导致电机的使用效率低下的问题。
Driving method of double-motor electric drive axle
双电机电驱桥的驱动方法
11.04.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |