新能源汽车综合能量需求计算方法研究

Research on Calculation Method of Comprehensive Energy Demand of New Energy Vehicles

在车辆动力性经济性开发流程中,需要明确车辆在运动过程中对动力系统的能量需求,以便根据此需求进行动力系统参数匹配和能量管理策略分析。本文提出了一种新能源汽车综合能量需求计算方法,根据车辆在运动过程的车速时间历程,分析车辆在加速、匀速和减速3种情况下的能量消耗,结合制动能量回收对能量消耗的影响,计算车辆的轮端功率需求和能量需求。

In the development process of vehicle dynamics and economy,it is necessary to clarify the energy demand of the powertrain during the movement of the vehicle,so that powertrain parameter matching and energy management strategy analysis can be carried out according to this demand.This paper proposes a new energy vehicle comprehensive energy demand calculation method.According to the vehicle's speed in the movement process,the energy consumption of the vehicle under three conditions of acceleration,constant speed and deceleration is analyzed,combined with the impact of braking energy recovery on energy consumption.Calculate the wheel end power and energy demand of the vehicle.