The invention belongs to the technical field of electric vehicle charging control, and particularly relates to a quick charging control method for an electric vehicle charging pile, which comprises the following steps: step 1, analyzing a lithium battery structure: the lithium battery is composed of a positive electrode, a diaphragm, a negative electrode, an organic electrolyte and a battery shell; when the lithium battery works, the positive electrode of the battery is generated by lithium ions, and the generated lithium ions enter the electrolyte from the positive electrode, pass through the bent small holes in the diaphragm through the electrolyte, move to the negative electrode and are combined with electrons running to the negative electrode in an external circuit; complex electrochemical internal mechanism analysis is considered. According to the method, parameter identification is carried out on the second-order RC equivalent circuit model of the lithium battery by adopting the recursive least square method based on the forgetting factor, and the obtained identification result is added into the transfer function of the established lithium battery mathematical model, so that the charging and discharging change process of the lithium battery can be better and more accurately simulated.

    本发明属于电动汽车充电控制技术领域,尤其为一种电动汽车充电桩快速充电控制方法,包括如下步骤:步骤1,分析锂电池结构:锂电池由正极、隔膜、负极、有机电解液和电池外壳组成;锂电池工作时,电池的正极由锂离子生成,生成的锂离子从正极到电解液里,通过电解液穿过隔膜上弯弯曲曲的小洞,运动到负极,与外部电路中跑到负极的电子结合在一起;考虑复杂的电化学内部机理分析。本发明采用基于遗忘因子的递推最小二乘法对锂电池二阶RC等效电路模型进行参数辨识,得到的辨识结果加入到所建立的锂电池数学模型的传递函数中,能够更好、更精确地模拟锂电池充放电变化过程。


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    Title :

    Quick charging control method for electric vehicle charging pile


    Additional title:

    一种电动汽车充电桩快速充电控制方法


    Contributors:
    TANG YANFENG (author) / WANG XIUZHUO (author) / WANG PENG (author) / CHEN TINGTING (author) / ZHAN WEIDA (author) / HAO ZIQIANG (author)

    Publication date :

    2023-10-03


    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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