The basic structure of charging station: The basic structure of box-type electric vehicle fast charging station is: primary side charger (charging for regenerative storage battery), storage battery, secondary side fast charger (charging for electric vehicle), regenerative battery maintenance machine, billing control system, cable distribution system, and machine room.
Working Principle: During normal times (night time priority), the grid power is charged to the regenerative storage battery through the primary side charger, and since there is no time requirement for the storage charging, it can be charged slowly with a small current, and the charging current can be automatically arranged according to the battery power, so as to use the night time low valley power to the maximum extent.
When it is necessary to charge the electric vehicle, according to the maximum allowable charging current and voltage of the electric vehicle, the electric vehicle will be charged quickly through the secondary side fast charger, and since the charging process is "pouring electricity" from the energy storage battery to the electric vehicle instead of taking it directly from the grid, there is no interference with the grid (if the electricity is taken directly from the grid). (If the electricity is taken directly from the grid with high power, it will seriously interfere with the grid, not only affecting other users but also threatening the grid equipment).
The cost of electricity is calculated according to the actual charging volume, which is very convenient. The equipment inside the box adopts a modular design and is equipped with special maintenance equipment for regenerative batteries. The charging station is assembled on-site for the first time, after which it can be moved as a whole as needed like a container. Remote highway and electricity insecure territory can be used in the form of solar and wind power, the principle is the same.
