Difference between DC and AC charging stations

Charging stations, whose functions are similar to the refueling engines in gas stations, can be fixed on the ground or walls, installed in public buildings and residential parking lots or charging stations, and can charge various types of electric vehicles according to different voltage levels. The input end of the charging station is directly connected with the AC grid, and the output end is equipped with charging plugs for charging electric vehicles. The current common energy supplement on the market is DC and AC charging stations, so what is the difference between these two charging stations?

1.Different power

Dc charging station, because of the large output power general specification has 60 kw). 80 kw 120 kw to 150 kw, 200 kw, etc.

(2) AC power is generally not very large, generally 7KW.22KW.40KW, etc.

2.The appearance

DC charging station body is relatively rough, because there is a certain number of AC-DC power modules inside, the higher the power, the more modules, the larger the station body.AC charging stations are smaller.

3.Plug

DC charging station plug is composed of 9 lines, two AC charging station plug is composed of 7 lines.

4.Applicable occasions

(1) DC charging stations are generally located in high-speed service areas. Shopping malls and other occasions.② AC charging stations are mainly located in residential areas or parking lots.

5.The function

(1) DC charging station is equipped with a perfect electrical safety design, with timing. Real-time monitoring of safety protection.Prediagnosis of device anomalies.Alarm feedback, BMS autonomous security protection and other functions.

(2) AC charging station with measurement.Control and protection functions such as running condition monitoring. Fault state monitoring, charging metering and charging, and linkage control in the charging process.

Simply put, AC charging stations need onboard chargers for charging, while DC quick charging stations don’t need this equipment. There is a big difference in the charging speed between the two. A pure electric vehicle (ordinary battery capacity) needs 6-8 hours to be fully charged through an AC charging station after discharge, while it only needs 1 to 2 hours through a DC fast charging station.