The invention relates to the technical field of charging pile parallel connection, in particular to a flexible capacity-expandable looped network parallel connection fast charging system which comprises a background management system and a plurality of charging piles. Each charging pile internally comprises a charging parameter acquisition module, a main control unit, a communication connection module, a constant-current discharging unit, a first control module, a second control module, a parallel access module and a charging interaction interface; whether the parallel connection relation between the charging piles and other charging piles needs to be established and the number of the charging piles are determined according to analysis and calculation of the charging power of the electric vehicle and the discharging power of the charging piles, and therefore the problem that when the high-power electric vehicle is charged, the charging speed is low due to the fact that the discharging power of the charging piles is low is solved. The charging efficiency of the electric vehicle is improved, constant-current adjustment is carried out on the discharging circuit of the charging pile through the constant-current discharging unit, it is ensured that the current of the electric vehicle is constant in the charging process, and the battery pack is gently controlled in the discharging process.

    本发明涉及充电桩并联技术领域,具体为一种可柔性扩容的环网并联快充系统,该系统包括后台管理系统和若干个充电桩;每个充电桩的内部均包括有充电参数获取模块、主控单元、通讯连接模块、恒流放电单元、第一控制模块、第二控制模块、并联接入模块和充电交互界面;本设计根据电动车的充电功率与充电桩的放电功率分析计算,来确定充电桩是否需要与其他充电桩建立并联关系以及数量,从而解决了大功率电动车在充电时,由于充电桩放电功率较小,导致充电速度较慢的问题,提高了电动车的充电效率,通过恒流放电单元对充电桩的放电电路进行恒流调整,确保电动车在充电过程中的电流恒定,使得电池组在放电过程中平缓受控。


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    Titel :

    Flexible capacity-expandable looped network parallel connection fast charging system


    Weitere Titelangaben:

    一种可柔性扩容的环网并联快充系统


    Beteiligte:
    ZHONG KANGQI (Autor:in) / WU ZHONGKUN (Autor:in) / HUANG JUNYI (Autor:in)

    Erscheinungsdatum :

    2021-08-24


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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