The invention relates to the field of vehicle auxiliary braking, in particular to a coordination control method and device for auxiliary braking gear shifting, and the method comprises the steps that when a vehicle is in a preset specific working condition, auxiliary braking gear shifting is activated; the method comprises the steps that a target gear of auxiliary braking gear shifting is automatically determined, the corresponding motor rotating speed and the corresponding regenerative braking torque of a gearbox output shaft are obtained according to the current gear of a vehicle and the target gear, and whether gear shifting is conducted or not is judged according to the regenerative braking torque and the motor rotating speed; under the condition that gear shifting is determined, braking and gear shifting are carried out through a motor, a mechanical brake and a gearbox on the premise that the deceleration of the vehicle is kept unchanged. When the vehicle is in the specific working condition, auxiliary braking gear shifting is activated, the braking smoothness of the vehicle under the conventional working condition and the specific working condition is guaranteed, the energy recovery rate of the vehicle is improved, meanwhile, the deceleration of the vehicle is kept unchanged in the gear shifting process, and the smoothness of the vehicle during braking gear shifting is improved.
一种辅助制动换挡的协调控制方法及装置,涉及车辆辅助制动领域,方法包括当车辆处于预设的特定工况时,激活辅助制动换挡;自动确定辅助制动换挡的目标档位,根据车辆的当前档位和所述目标档位,分别获得对应的电机转速及变速箱输出轴的再生制动扭矩,根据所述再生制动扭矩及电机转速判断是否换挡;在确定换挡的情况下,在此保持车辆减速度不变的前提下,通过电机、机械制动和变速箱进行制动并换挡。本发明通过当车辆处于特定工况时,激活辅助制动换挡,保证了车辆在常规工况和特定工况下的制动平顺性,提高了车辆的能量回收率,同时在换挡过程中保持车辆减速度不变,提高了车辆在制动换挡时的平顺性。
Coordination control method and device for auxiliary braking gear shifting
一种辅助制动换挡的协调控制方法及装置
2024-08-16
Patent
Electronic Resource
Chinese
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 |
Emergency braking and auxiliary gear shifting device and method for pilotless automobile
European Patent Office | 2022
|European Patent Office | 2024
|BRAKING AND GEAR SHIFTING CONTROL METHOD AND SYSTEM FOR ELECTRIC VEHICLE
European Patent Office | 2023
|