An AC charging pile is a charging device designed for electric vehicles, mainly for slow charging of electric vehicles by providing stable AC power to the on-board charger (OBC) on the electric vehicle. AC charging pile itself does not have direct charging function, but needs to be connected to the on-board charger (OBC) on the electric vehicle to convert AC power to DC power, and then charge the battery of the electric vehicle, this charging method occupies an important position in the market for its economy and convenience.

Although the charging speed of AC charging station is relatively slow and takes a long time to fully charge the battery of an electric vehicle, this does not detract from its advantages in home charging and long parking charging scenarios. Owners can park their EVs near the charging piles to charge at night or during free time, which does not affect daily use and makes full use of charging during the grid's low hours to reduce charging costs. Therefore, AC charging pile has less impact on the grid load and is conducive to the stable operation of the grid. It does not need complex power conversion equipment, and only needs to provide AC power directly from the grid to the on-board charger, which reduces energy loss and grid pressure.

In conclusion, the technology and structure of AC charging pile is relatively simple, with low manufacturing cost and affordable price, which makes it suitable for wide application in scenarios such as residential districts, commercial car parks and public places. It can not only meet the daily charging needs of electric vehicle users, but also provide value-added services for car parks and other places to enhance user experience.