The invention provides a current output control method for an alternating current charging pile in the technical field of charging piles, and the method comprises the steps: S10, obtaining the impedance of the charging pile, Vbecore, cable parameters and an automobile model, and calculating Rall based on the impedance of the charging pile and the cable parameters; step S20, calculating IDropAllow1 on the basis of the Vbefront and the Rall, calculating Iwiremax on the basis of the cable parameters, and obtaining IDropCarAllow on the basis of the automobile model number; step S30, on the basis of the IDropAllow1, the Iwiremax and the IDropCarAllow, calculating the Irecovery (1), and taking the Irecovery (1) as the Irecovery (1); the suggested power P < recovery > and the suggested efficiency E < recovery > are calculated on the basis of the I < recovery > 1; step S40, V < after > and I < after > are obtained, and the actual impedance R < charge > of the charging loop is calculated based on the V < before >, the V < after > and the I < after >; step S50, calculating a second suggested current I < recovery > 2 based on the R < charge > so as to update the I < recovery >, the P < recovery > and the E < recovery >; step S60, updating the Irecovery, the Precovery and the Erecovery on the basis of the fluctuation of the power grid; step S70, when the model of the automobile is replaced, the Irecovery, the Precovery and the Erecovery are updated; and step S80, charging safety monitoring is carried out based on the Rall and the Rcharge. The method has the advantages that maximum current charging is provided on the premise that charging safety and reliability are guaranteed, and then the user experience is greatly improved.

    本发明提供了充电桩技术领域的一种交流充电桩电流输出控制方法,包括:步骤S10、获取充电桩阻抗、Vbefore、线缆参数、汽车型号,基于充电桩阻抗、线缆参数计算Rall;步骤S20、基于Vbefore、Rall计算IDropAllow1、基于线缆参数计算Iwiremax,基于汽车型号获取IDropCarAllow;步骤S30、基于IDropAllow1、Iwiremax、IDropCarAllow计算Irecommend1,将Irecommend1作为Irecommend;基于Irecommend1计算建议功率Precommend、建议效率Erecommend;步骤S40、获取Vafter、Iafter,基于Vbefore、Vafter、Iafter计算充电回路实际阻抗Rcharge;步骤S50、基于Rcharge计算第二建议电流Irecommend2以更新Irecommend、Precommend、Erecommend;步骤S60、基于电网波动更新Irecommend、Precommend、Erecommend;步骤S70、更换汽车型号时,更新Irecommend、Precommend、Erecommend;步骤S80、基于Rall、Rcharge进行充电安全监控。本发明的优点在于:在保障充电安全及可靠的前提下,提供最大电流充电,进而极大的提升了用户体验。


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    Title :

    Current output control method for alternating current charging pile


    Additional title:

    一种交流充电桩电流输出控制方法


    Contributors:
    TANG CIQUAN (author) / XIONG GANG (author) / CHEN QIQI (author) / CHEN WENPING (author) / CHI SHENGSONG (author) / WANG WEIPING (author)

    Publication date :

    2022-05-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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