The invention provides a bus fast charging station ordered charging method considering battery dynamic charging loss, which comprises the following steps: determining an electric quantity demand meeting bus route operation according to the operation time of a charging station, equipment power limitation, quantity limitation and a bus departure plan; based on the first-order RC circuit model, establishing a battery heating loss model and a relationship between the charging energy conversion efficiency and the actual charging power of the vehicle-mounted energy storage system; taking the minimum actual electricity consumption of the charging station in one day or the minimum actual electricity charge of the charging station in one day as an objective function, establishing an optimization model by taking the operation time of the charging station, the number of charging piles, the maximum power of the charging piles, the power distribution capacity, the travel electric quantity demand of the electric bus and the charging time continuity of the electric bus as constraint conditions; and using piecewise linearization to convert the nonlinear optimization objective function model into a mixed integer convex programming problem, and solving the mixed integer convex programming problem to obtain an optimal charging plan, including the optimal charging moment and the corresponding charging power of each vehicle. According to the method, the charging energy conversion efficiency is improved, the heating loss of the battery is reduced, the service life of the battery is prolonged, the charging cost of the bus is reduced while the charging energy conversion efficiency is improved, and the economical efficiency is improved.

    本发明提供了一种考虑电池动态充电损耗的公交车快充站有序充电方法,包括:根据充电站的运行时间、设备功率限制、数量限制以及公交车发车计划,确定满足公交线路运行的电量需求;基于一阶RC电路模型建立电池发热损耗模型和充电能量转换效率与车载储能系统实际充入的充电功率之间的关系;以一天中充电站的实际用电量最小或一天之中充电站的实际电费最少为目标函数,其中考虑电池发热损耗,以充电站运营时间、充电桩数量、充电桩最大功率、配电容量、电动公交车出行电量需求、电动公交车充电时间连续性为约束条件建立优化模型;使用分段线性化将非线性的优化目标函数模型转换为混合整数凸规划问题,求解混合整数凸规划问题得到最优的充电计划,包括每辆车的最优充电时刻及对应的充电功率。本发明的方法提高了充电的能量转换效率,减少了电池的发热损耗并延长了电池的使用寿命,在提高充电能量转换效率的同时降低了公交车的充电成本,提高了经济性。


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    Title :

    Bus fast charging station ordered charging method considering battery dynamic charging loss


    Additional title:

    一种考虑电池动态充电损耗的公交车快充站有序充电方法


    Contributors:
    LI YULU (author) / BAO YAN (author) / FAN SENYONG (author) / SHI JINKAI (author) / ZHANG WEIGE (author) / NIU LIYONG (author) / GE CHANG (author) / CHEN SHIHAO (author) / GUO ZIYU (author) / SONG YIFEI (author)

    Publication date :

    2024-05-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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