At present, there are two common charging piles on the market, one is DC charging pile and the other is AC charging pile.
DC charging piles: DC charging piles are fixedly installed in some public places outside electric vehicles with a dc energy meter for solar system, such as residential quarters, residential parking lots, commercial areas, service areas, outdoor parking lots, electric vehicle charging stations and other places. It is a charging device that provides DC power for non-vehicle electric vehicle batteries by connecting to the public grid. Because the DC charging pile can directly charge the battery of an electric vehicle, it is generally powered by a three-phase four-wire system or a three-phase three-wire system, and the output voltage and current can be adjusted in a large range, so it can realize the fast charging of electric vehicles, and the DC charging pile is also, therefore, It is called fast charge.
AC charging piles: AC charging piles are also fixedly installed in some public places outside electric vehicles, and provide controllable one-way AC power or three-phase AC power supply devices for the onboard chargers of electric vehicles. It should be noted that the AC charging pile itself does not have the charging function, it only provides power output, and can charge the battery of the electric vehicle by connecting to the onboard charger of the electric vehicle. The output power of AC charging piles will not be very large, generally 3.5kW, 7kW, 15kW, etc.
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