In this paper, the battery energy storage technology is applied to the traditional EV (electric vehicle) charging piles to build a new EV charging pile with integrated charging, discharging, and storage; Multisim software is used to build an EV charging model in order to simulate the charge control guidance module.
The simulation results of this paper show that: (1) Enough output power can be provided to meet the design and use requirements of the energy-storage charging pile; (2) the control guidance circuit can meet the requirements of the charging pile; (3) during the switching process of charging pile connection state, the voltage state changes smoothly.
Moreover, a coupled PV-energy storage-charging station (PV-ES-CS) is a key development target for energy in the future that can effectively combine the advantages of photovoltaic, energy storage and electric vehicle charging piles, and make full use of them .
In the process of energy dispatch for PV and battery energy storage systems integrated fast charging stations, if only the economic dispatch aimed at reducing operating costs is adopted, the problem of serious power fluctuation at the grid connection point of the charging station will arise, with a fluctuation index as high as 3156.348.
The traditional charging pile management system usually only focuses on the basic charging function, which has problems such as single system function, poor user experience, and inconvenient management.
Future studies will construct more detailed PV output and EV charging scenarios, and comprehensively consider the multiple uncertainties of the actual operation of the distribution network station area, so that it can better meet the needs of real-time optimization scheduling of the power grid.