ev car charging

The ev car charging method the battery in a short time with a high charging current of 150 to 400 A, and the installation cost is relatively high compared with the former.
Fast charging can also be called rapid charging or emergency charging. The purpose is to fully charge the electric vehicle in a short time, and the charging time should be close to the fueling time of the fuel vehicle. Large charging stations (machines) use this type of charging. Large charging station (machine) - fast charging mode (Figure 4) is mainly for long-distance travel or need to carry out rapid replenishment of electric energy. The power of the charging machine is very large, generally greater than 30kW, using three-phase four-wire 380V power supply . Its typical charging time is: 10 ~ 30min. This type of charging has a certain impact on battery life. In particular, ordinary batteries cannot be quickly charged, because receiving a large amount of power in a short period of time can cause the battery to overheat. The key to the fast charging station is the off-board fast charging unit, which can output 35kW or more. Due to the high power and current ratings, this type of charging has high requirements for the grid and should generally be used near or near the 10kV substation or in monitoring stations and service centers.