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目的:为了充分利用外界充电条件,减少现有增程式电动汽车燃油消耗,结合当前运行工况、整车运行状态以及相距充电站距离等信息,通过合理调整整车需求功率在增程器与动力电池之间的分配,使得增程式电动汽车在到达充电站时荷电状态(SOC)降低到理想充电范围,提高了整车从充电站获取清洁电能的效率。创新点:1.根据车辆当前状态,建立电池需求电量估算模块和増程器输出功率计算模块;2.在司机决定进入充电站充电后,控制电池SOC在车辆进入充电站时降到最低。方法:1.通过对使用环境进行分析,建立智能控制策略,在不同的运行工况下对增程器采用不同的控制方式。通过理论推导,建立动力电池需求电量估算模块(公式2);2.通过仿真计算,将所提出的智能控制策略与初始控制策略进行对比。结论:1.与整车原策略相比,本文提出的智能控制策略能够根据车辆当前运行工况,控制增程器采用不同的工作方式;2.在司机决定到充电站充电时,根据当前SOC值,确定最佳增程器关闭时刻,可使增程式电动汽车在到达充电站时,SOC降低到理想充电范围,提高动力电池从充电站获取清洁电能的能力。
Objectives: In order to make full use of external charging conditions and reduce the fuel consumption of existing extended range electric vehicles, combined with the current operating conditions, vehicle operating conditions and the distance from the charging station and other information, through the reasonable adjustment of vehicle demand power in the range extender and power The distribution between the batteries reduces the state-of-charge (SOC) of the extended range electric vehicle to the ideal charging range when it reaches the charging station and improves the efficiency of the vehicle getting clean electric energy from the charging station. Innovative points: 1. According to the current state of the vehicle, to establish the battery power demand estimation module and Zengzao output power calculation module; 2. After the driver decided to enter the charging station, control the battery SOC when the vehicle into the charging station to a minimum. Methods: 1. Through the analysis of the use of the environment, the establishment of intelligent control strategy, in different operating conditions for the extender with different control methods. Through the theoretical derivation, the power battery demand power estimation module (formula 2) is established; 2. Through the simulation calculation, the proposed intelligent control strategy is compared with the initial control strategy. Compared with the original vehicle strategy, the intelligent control strategy proposed in this paper can control different range of operation modes according to the current operating conditions of the vehicle; 2. When the driver decides to charge the charging station, according to the current SOC Value to determine the best range extender off time, can make extended-range electric vehicles reach the charging station, the SOC reduced to the ideal charging range, improve the power battery from the charging station to obtain the ability to clean power.