The invention discloses a gear shifting control method of a hybrid power system, which comprises the following steps of: when torque is unloaded, acquiring the current driving gear and the vehicle speed of a vehicle, and sending a gear shifting request when the vehicle speed reaches a gear shifting point so as to enter driving motor unloading control; obtaining the expected torque of a driver in the gear shifting process, and constructing a first torque relation formula according to the relation between the expected torque of the driver and the output torque of the driving source; when the driving motor starts to unload, the torque of the driving motor is gradually reduced to 0 Nm according to the fixed slope, and unloading control is carried out; according to the maximum charging power of a power battery, obtaining the maximum power generation torque of a generator, and according to the first torque relation formula, controlling the engine torque to be gradually increased to the maximum engine torque; and a second torque relation formula of the generator torque and the engine torque is obtained, and generator torque output is controlled according to the second torque relation formula. The comfort and safety of a user can be improved, and the energy consumption of the hybrid electric vehicle is reduced.
本发明公开了一种混动系统的换挡控制方法,包括:在扭矩卸载时,获取车辆当前行驶挡位和车速,在车速达到挡位换挡点时发出换挡请求,以进入驱动电机卸载控制;获取换挡过程中驾驶员期望扭矩,根据所述驾驶员期望扭矩和驱动源的输出扭矩的关系,构建第一扭矩关系公式;在驱动电机开始卸载时,对驱动电机扭矩按固定斜率逐渐下降为0Nm进行卸载控制;根据动力电池的最大充电功率获取最大发电机发电扭矩,并根据所述第一扭矩关系公式控制发动机扭矩逐渐增大至最大发动机扭矩;获取发电机扭矩与发动机扭矩的第二扭矩关系公式,并根据所述第二扭矩关系公式控制发电机扭矩输出。本发明能提高用户的舒适感和安全性,减少混动汽车的能源消耗。
Gear shifting control method of hybrid power system
一种混动系统的换挡控制方法
2024-11-01
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 |
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