First of all, the fast charging and slow charging interfaces of electric vehicles correspond to DC and AC interfaces, DC fast charging and AC slow charging. Generally, there are 5 interfaces for fast charging and 7 interfaces for slow charging. In addition, we can see from the charging line that the fast charging and slow charging are relatively thicker. Of course, some electric vehicles have only one charging mode due to cost, battery capacity and other considerations, so there will only be one charging port.

Fast charging, fast charging, but complex station construction and high cost. Fast charging is usually the direct current (also AC) that directly charges the battery in the car. In addition to the power supply from the grid, the fast charging pile shall be equipped with a fast charger. It is more suitable for users to replenish power midway, but not every family has the conditions to install fast charging. Therefore, for convenience, the car is equipped with a slow charging function. In addition, for cost reasons, there are a large number of slow charging piles to improve coverage.

Slow charging refers to slow charging by using the vehicle's own charging system. Slow charging is good for the battery, with sufficient power. Moreover, the construction of the charging station is relatively simple, requiring only sufficient power supply. No additional high current charging equipment is required, and the threshold is low. It is very convenient to use at home. It can be charged wherever there is power.

Slow charging takes about 8-10 hours to fully charge the battery. Fast charging current is relatively large, reaching 150-300 Amps, and it can be fully charged in about half an hour. It is more suitable for midway power supply. Of course, high current charging will have a little impact on battery life. In order to improve the charging speed, there are more and more fast cast-in-place piles! Most of the charging stations built in the later stage are fast charging, and the slow charging piles in some areas will not be updated and maintained, and will be charged directly after damage.