What is the difference between AC and DC charging for new energy vehicles?

All new energy electric vehicles with their own power supply on the car, the power supply is the electric energy stored in the battery, which can supply power to the DC motor through the controller, or convert the DC power into AC frequency conversion power through the inverter, and supply power to the AC motor, and the role of the AC motor or DC motor in the electric vehicle is the same.

AC charging is to put the power supply into the car unsheltered C end, the on-board charger for voltage adaptation conditions, the power bank belongs to slow charging and DC charging called AC, into DC direct input of the power battery for charging, belongs to fast charging.

The main differences between AC charging piles and DC charging piles are as follows:

1. Charging time. The most essential difference between slow charging and fast charging is the charging time, which generally takes hours to fully charge the power battery with a DC charging pile; It generally takes 8 to 10 hours to charge with an AC charging pile.

2. On-board charger. If the AC charging pile charges the power battery, it needs to be charged with the help of the on-board charger on the car, while the DC charging pile can be charged directly, which is also the biggest difference with DC charging.

DC charging pile is commonly known as "fast charging", which is fixed installed outside the electric vehicle, connected to the AC power grid, and is selected as a three-phase four-wire 380V frequency stable frequency of 50Hz, and can provide DC power supply for the power battery of non-vehicle electric vehicles. And the AC charging pile, which is commonly known"Slow charging"However, the AC charging pile does not have a charging function, and it must be connected to the on-board charger to charge the electric vehicle, which only plays a role in controlling the power supply.

The AC charging pile provides power input to the charger of the electric vehicle, and because the power of the general on-board charger is not very large, it cannot achieve fast charging well. But we can use DC charging piles to achieve fast charging.

DC charging pile is a power supply device that is fixed outside the electric vehicle, connected to the AC power grid, and can provide DC power for the power battery of the off-board electric vehicle. The input voltage of the DC charging pile adopts three-phase four-wire AC380V 15%, the frequency is 50Hz, and the output is adjustable DC power, which directly charges the power battery of the electric vehicle. Since the DC charging pile adopts three-phase four-wire power supply, it can provide sufficient power, and the output voltage and current adjustment range is large, which can realize the requirements of fast charging.

To put it simply:

1.DC charging pile right: Since the DC charging pile can directly charge the battery of the electric vehicle, it can realize the fast charging of the electric vehicle;

2.AC charging pile: AC charging pile itself does not have the charging function, it only provides power output, and also needs to be connected to the on-board charger of electric vehicles to play the role of charging the electric vehicle battery, so the AC charging pile cannot achieve fast charging and slow charging.

Hope it helps, thank you!

What is the difference between DC charging piles and AC charging piles? Today is a long time to see.

Hybrid vehicles are generally AC charging interfaces, and all cannot be charged by DC charging piles, but can only be charged by AC charging piles. Most hybrid electric vehicles are charged by only providing slow charging, that is, using AC piles, which means that the output of the piles is alternating current, not direct current, which can only be provided on DC piles.

AC charging, that is, what we call household charging, belongs to slow charging from the perspective of charging, and it is slower than DC charging from the charging speed, and the advantage of AC charging is slow charging, and to ensure that each cell can reach a full state as much as possible. For slow battery charging, it is an appropriate amount, of course, from the perspective of the life of use, it is also helpful to extend the battery life.

How it works:

At the beginning of the vehicle, the battery is in a full state, and its energy output can meet the requirements of the vehicle, and the auxiliary power system does not need to work. When the battery level is less than 60%, the auxiliary power system starts: When the energy demand of the vehicle is high, the auxiliary power system and the battery pack provide energy to the drive system at the same time.

When the vehicle's energy demand is low, the auxiliary power system provides energy to the drive system and charges the battery pack. Due to the existence of the battery pack, the engine works in a relatively stable working condition, so that its emissions are improved.

At present, the charging method of most domestic hybrid electric vehicles is to only provide slow charging, that is, the use of AC piles, which means that the output of the pile is alternating current, not direct current, which can only be provided on DC piles.

Plug-in hybrids are generally charged with AC.

The difference between the two: To put it simply, AC charging piles need to be charged with the help of on-board chargers, while DC fast charging piles do not need this equipment. There is a big difference in charging speed between the two, with a pure electric vehicle (normal battery capacity) fully discharged and fully charged through an AC charging station taking 8 hours, while it only takes 2 to 3 hours to pass through a DC fast charging station.

The difference between DC charging pile and AC charging pile:

1) DC charging pile: DC electric vehicle charging station, commonly known as "fast charging", is a power supply device that is fixed outside the electric vehicle, connected to the AC power grid, and can provide DC power for the power battery of non-vehicle electric vehicles. The input voltage of the DC charging pile adopts three-phase four-wire AC 380 V 15%, the frequency is 50Hz, and the output is DC power that can be adjusted to directly charge the power battery of the electric vehicle.

Because the DC charging pile adopts a three-phase four-wire power supply, it can provide sufficient power, and the voltage and current adjustment range of the socks are large, which can meet the requirements of fast charging.

2) AC charging pile: AC electric vehicle charging pile, commonly known as "slow charging", is a power supply device that is fixed outside the electric vehicle and connected to the AC power grid to provide AC power for the on-board charger of the electric vehicle (that is, the charger fixed on the electric vehicle). The AC charging pile only provides power output, has no charging function, and needs to be connected to the on-board charger to charge the electric vehicle.

It is equivalent to just playing the role of controlling the power supply.

3) The difference between the two: the AC charging pile provides power input to the charger of the electric vehicle, and because the power of the on-board charger is not large, it cannot achieve fast charging. DC fast charging pile is a power supply device that is fixed outside the electric vehicle and connected to the AC power grid, which can provide DC power supply for the power battery of the off-board electric vehicle.

Photo by Q&A) M5 Xpeng P7 AION V Trumpchi GS8 Xpeng P5 Ideal ONE @2019