New energy charging piles, that is, equipment and devices that provide charging services for plug-in new energy vehicles, are usually installed in public places such as public buildings, parking lots, shopping malls, charging stations for operating vehicles, and private places such as residential areas. It uses power electronics technology to convert alternating current into direct current, and then outputs it to the electric vehicle through the charging port to realize the charging of the electric vehicle. In the charging process, the charging pile will automatically adjust the output current and voltage according to the battery's power and charging demand, to ensure that the battery can get the best charging effect.

From the perspective of service objects, new energy charging piles can be divided into public charging piles, special charging piles and self-use charging piles. Public charging piles are open to the public and generally installed in public parking lots or along highways; Special charging piles are only open to specific user groups, such as charging piles used internally by communities, companies, etc. The self-use charging pile is a private charging pile, which is installed in the private area and is not open to the public.