The invention relates to the technical field of charging and discharging control of photovoltaic energy storage, in particular to a charging and discharging method of a photovoltaic energy storage system and the photovoltaic energy storage system, and the method comprises the following steps: obtaining photovoltaic power generation power generated by a photovoltaic module; acquiring power required by a user load; judging whether the photovoltaic power generation power is greater than the power required by the user load, and if so, operating according to the following mode: 1, charging the electric vehicle by using the photovoltaic power generation power; 2, an external power grid is used for supplementing power to charge the electric vehicle; 3, the electric vehicle or the energy storage unit is used for providing auxiliary power for an external power grid; if not, the energy storage unit or the electric vehicle or the external power grid is used for supplying power to the user load. The first mode and the second mode provide various paths for charging the electric automobile, saving and efficiency are achieved, the third mode shows that the system participates in external power grid support, safety and stability are achieved, and the fourth mode intelligently utilizes different electric appliances to supply power to user loads to guarantee life requirements.

    本发明涉及光伏储能充放电控制技术领域,其特别涉及一种光伏储能系统的充放电方法及光伏储能系统,包括以下步骤:获取光伏模块产生的光伏发电功率;获取用户负载所需功率;判断光伏发电功率是否大于用户负载所需功率,若是,按下模式运行:一:利用光伏发电功率给电动汽车充电;二:利用外部电网补充功率给电动汽车充电;三:使用电动汽车或储能单元对外部电网提供辅助功率;若否,利用储能单元或电动汽车或外部电网为用户负载供电。模式一与模式二提供了多种路径为电动汽车充电,节约高效,模式三展示系统参与外部电网支援,安全稳定,模式四智能地利用不同电器为用户负载供电保障生活所需。


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    Title :

    Charging and discharging method of photovoltaic energy storage system and photovoltaic energy storage system


    Additional title:

    一种光伏储能系统的充放电方法及光伏储能系统


    Contributors:
    JIANG HAIJIANG (author) / DING MIAN (author)

    Publication date :

    2024-01-09


    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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