The invention discloses a pure electric vehicle dual-motor coupling driving device and a hill-holding control method thereof. The pure electric vehicle dual-motor coupling driving device comprises a vehicle control unit, a first motor controller, a second motor controller, a main motor, an auxiliary motor, a first electromagnetic clutch, a second electromagnetic clutch, a planetary gear mechanism,a transmission shaft, a speed reducer and a differential mechanism. During work, when it is detected that the gradient is smaller than phi, the first motor controller controls the main motor to entera parking slope, the first electromagnetic clutch is closed, and the second electromagnetic clutch is disconnected; and when it is detected that the gradient is larger than or equal to phi, the torque M0 of the auxiliary motor is directly requested, the first motor controller calculates the torque needing to be output by the main motor according to the torque needed for achieving slope parking and the torque M0 provided by the auxiliary motor, and the first electromagnetic clutch and the second electromagnetic clutch are closed at the same time. The device can be used for the dual-motor electric automobile, and the motor utilization rate is effectively increased while a problem that an existing dual-motor electric automobile is parked on a slope under a large slope is solved.
本发明公开了一种纯电动汽车双电机耦合驱动装置及其驻坡控制方法,装置包括整车控制器、第一电机控制器、第二电机控制器、主电机、辅助电机、第一电磁离合器、第二电磁离合器、行星齿轮机构、传动轴、减速器和差速器。工作时,当检测到坡度小于φ时,第一电机控制器控制主电机进入驻坡,第一电磁离合器闭合,第二电磁离合器断开;当检测到坡度大于等于φ时,直接请求辅助电机扭矩M0,第一电机控制器根据实现驻坡需要的扭矩及辅助电机提供的扭矩M0来计算主电机所需输出的扭矩,第一电磁离合器与第二电磁离合器同时闭合。本发明能够用于双电机电动汽车,在解决目前双电机电动汽车在大坡度下驻坡问题的同时,有效提高了电机利用率。
Pure electric vehicle dual-motor coupling driving device and hill-holding control method thereof
一种纯电动汽车双电机耦合驱动装置及其驻坡控制方法
2021-03-30
Patent
Elektronische Ressource
Chinesisch
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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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