AC charger defines the difference between DC charger and AC charger
What is an AC charger
AC Charging pile refers to a special power supply device that provides AC power for electric vehicles with on-board chargers by conduction, usually consisting of a human-computer interaction unit, a control unit, a metering unit, and a safety protection unit.
Human-computer interaction unit mainly includes: display screen, (key), card reader module;
Control unit mainly includes: main monitoring and auxiliary module;
The metering unit is an electric energy meter;
The safety protection unit includes: leakage protection switch, emergency stop switch, anti-falling switch, and overvoltage and undervoltage protection devices.
What is the difference between a DC charging pile and an AC charging pile?
DC charging piles
DC electric vehicle charging stations, commonly known as “fast charging”, are fixed outside the electric vehicle. A power supply device that is connected to the AC power grid and can provide DC power for the off-board electric vehicle power battery. The input voltage of the DC charging pile adopts three-phase four-wire AC380V±15%, the frequency is 50Hz, and the output is adjustable direct current, which directly charges the power battery of the electric vehicle. Since the DC charging pile adopts a three-phase four-wire system for power supply, it can provide sufficient power, and the output voltage and current adjustment range is large, which can meet the requirements of fast charging.
AC charging piles
AC electric vehicle charging piles, commonly known as “slow charging”, are fixedly installed outside the electric vehicle and connected to the AC power grid. The electric vehicle on-board charger (that is, the charger fixedly installed on the electric vehicle) provides a power supply device for AC power. The AC charging pile only provides power output and has no charging function. It needs to be connected to the on-board charger to charge the electric vehicle. It is equivalent to just playing the role of a control power supply.
In simple terms, the AC charging pile needs to be charged with the help of the on-board charger, and the DC fast charging pile does not need this equipment. The charging speed of the two is quite different. It takes 8 hours for a pure electric vehicle (common battery capacity) to be fully discharged through an AC charging pile, while it only takes 2 to 3 hours to pass through a DC fast charging pile. The AC charging pile provides power input to the charger of the electric vehicle. Since the power of the on-board charger is not large, fast charging cannot be achieved. The DC fast charging pile is a power supply device that is fixedly installed outside the electric vehicle and connected to the AC power grid, and can provide DC power for the power battery of the non-vehicle electric vehicle. The DC charging pile can provide sufficient power, and the output voltage and current can be adjusted in a wide range , can meet the requirements of fast charging.
