There are two main charging principles for EV charging piles: conductive charging and wireless charging. Conductive charging is that the electric vehicle is directly connected to the charging pile through the charging line, and the alternating current is converted into direct current through electronic power technology, and then stored in the power battery of the electric vehicle. Wireless charging is the use of wireless charging technology, by placing a magnet between the electric vehicle and the charging pile, through the magnetic field to transmit electrical energy from the charging pile to the electric vehicle, so as to achieve charging.
There are two ways to charge an EV charger:
DC charging pile: DC electric vehicle charging pile is "fast charging", through the three-phase grid input AC power, and then through the three-phase bridge rectifier current into a straight current, it is installed outside the electric vehicle, for the electric vehicle power battery to provide DC power supply device. The power it provides is relatively large, and the output voltage and current adjustment range is relatively large, which can achieve fast charging. Generally, it takes 2-3 hours to be fully charged.
AC charging pile: AC electric vehicle charging pile is "slow charging", generally a conventional charging mode, it is connected to the AC power grid, it provides power output, there is no charging function, it needs to be connected to the on-board charger for charging, it will control the power supply to some extent, it generally takes 8 hours to fully charge, it is more suitable for slow charging power batteries.
Different charging methods can be selected according to different needs.