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The function of the charging pile is similar to that of the fuel dispenser in the gas station. It is an electric vehicle charging station, which can realize the charging of time, electricity, and money. It is terminal equipment for the charging of new energy electric vehicles. It is also an essential basic supporting facility for the rapid development of new energy electric vehicles.

There are many types of charging piles, which can be divided into floor-type charging piles and wall-mounted charging piles according to the installation method; It is divided into public charging piles and special charging piles according to the installation location; It can be divided into one single charge and one multi charge according to the number of charging interfaces; According to the charging mode, it is divided into DC charging pile, AC charging pile and AC / DC integrated charging pile.

The DC charging pile is commonly known as "fast charging". It is a power supply device that is fixed outside the electric vehicle and connected to the AC power grid. It is a three-phase four-wire 380V power supply device with a stable frequency of 50Hz. At the same time, it can provide DC power for the power battery of the off-board electric vehicle.

The AC charging pile is commonly known as "slow charging", however, the AC charging pile has no charging function. It must be connected to the onboard charger to charge the electric vehicle. It only plays a role in controlling the power supply.

Difference between DC charging pile and AC charging pile

1. Charging time: the most essential difference between slow charging and fast charging is the charging time. Generally speaking, it takes about 1.5~3 hours to charge the power battery with a DC charging pile; However, it usually takes 8-10 hours for the AC charging pile to be fully charged.

1. On-board charger: if the AC charging pile charges the power battery, it needs to use the onboard charger on the vehicle to charge, while the DC charging pile can be charged directly, which is also the biggest difference from DC charging.

Summary

Compared with the AC charging pile, the DC charging pile has higher charging efficiency, and it can be said that it is a second kill; At the same time, with the construction of more and more DC charging piles, AC charging piles may be eliminated in the future. However, from the current point of view, although the DC charging pile is relatively fast, it still needs at least an hour to fully charge. I hope that in the future, it can be developed to "charge for 5 minutes, with an endurance of 200 kilometers".

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