The invention discloses a control method and system for the maximum allowable service power of a power battery and an extended-range hybrid vehicle, and the control method comprises the steps: calculating the first allowable service power P1 of the power battery according to the current SOC value SOC0 of the power battery, the current minimum available SOC value SOCmin of the power battery and the current maximum discharge power Pmax of the power battery; if the vehicle is in the starting working condition or the transient acceleration working condition, second allowable service power P2 of the power battery is obtained according to the current vehicle speed and the current accelerator pedal opening degree look-up table, and the current maximum allowable service power Pen of the power battery is made to be equal to min (max (P2, P1), Pmax); otherwise, enabling the maximum allowable service power Pen of the current power battery to be equal to P1. By adopting the method, the electric quantity reduction rate of the power battery can be slowed down under the condition of low electric quantity, the electric quantity maintaining capability of the vehicle is improved, and meanwhile, the problem that the power response is severely slowed down during starting or transient acceleration of the vehicle is avoided.
本发明公开了一种动力电池最大允许使用功率的控制方法、系统及增程式混动车辆,控制方法包括:根据当前动力电池SOC值SOC0、当前动力电池最小可用SOC值SOCmin和当前动力电池最大放电功率Pmax,计算动力电池第一允许使用功率P1;若车辆处于起步工况或者瞬态加速工况,则根据当前车速和当前加速踏板开度查表,得到动力电池第二允许使用功率P2,使当前动力电池最大允许使用功率Pen=min(max(P2,P1),Pmax);否则,使当前动力电池最大允许使用功率Pen=P1。采用本发明能在低电量情况下减缓动力电池电量下降速率,提升车辆电量维持能力,同时避免车辆在起步或瞬态加速时出现动力响应严重变慢问题。
Control method and system for maximum allowable service power of power battery and extended-range hybrid vehicle
动力电池最大允许使用功率的控制方法、系统及增程式混动车辆
15.04.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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