The invention discloses an electric vehicle charging power optimal distribution method, which comprises the following steps: when an electric vehicle enters a charging station to receive a power grid charging service, calculating the capacity of a battery of the electric vehicle to be charged, and dividing the charging process of the electric vehicle into an energy supplementing stage, a power keeping stage and a current supplementing stage; according to the number of the electric vehicles in different stages and the maximum charging power of each electric vehicle, the maximum charging power of all the electric vehicles in different grades is calculated for power distribution, and meanwhile when power distribution is carried out on the electric vehicles, a power weight factor distribution method is adopted, so that the maximum charging power of all the electric vehicles in different grades is obtained. And the charging time of the electric vehicles with different battery capacities is approximately equal. The electric vehicle charging process can be optimized and dispatched according to the relation between the available power resource of the power grid and the charging power of the electric vehicle needing to be charged, the efficiency and fairness of the electric vehicle charging process are effectively considered, the fluctuation of a power grid load curve is reduced, and the charging time of the electric vehicle is shortened.
本发明公开了一种电动汽车充电功率优化分配方法,当电动汽车进入充电站接受电网充电服务,计算出需要充电电动汽车电池的容量,将电动汽车充电过程划分为能量补充阶段、功率保持阶段和电流补充阶段,根据不同阶段电动汽车的数量和每辆电动汽车的最大充电功率,计算出处于不同等级的所有电动汽车的最大充电功率进行功率分别,同时在电动汽车进行功率分配时,采用功率权重因子分配法,使得具有不同电池容量的电动汽车需要完成充电的时间大致相等。本发明可以根据电网可用功率资源和需要充电的电动汽车充电功率之间的关系对电动汽车充电过程进行优化调度,有效兼顾电动汽车充电过程的效率和公平性、减小电网负荷曲线波动、缩短电动汽车充电时间。
Electric vehicle charging power optimal distribution method
一种电动汽车充电功率优化分配方法
2024-04-05
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Electric vehicle charging device using charging power distribution
European Patent Office | 2023
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