Charging pile is a common name for Electric Vehicle Supply Equipment (EVSE), which is a tool for supplementing electric energy for electric vehicles, similar to refueling equipment for fuel vehicles

Unfortunately, as of today, there is no unified world standard for the charging interface of electric vehicles, just as the charging interface of mobile phones before 2012 is as complex and diverse.

Refer to the figure below for the interface types around the world. Charging cables of different standards and car charging interfaces cannot be used universally.

Generally speaking, the current standards are formulated by countries with auto industry and important market countries: Europe/America/Japan/China. There are 3 standards for the AC charging interface: Type 1 in the United States/Japan, Type 2 in Europe, and GB/T in China. There are four standards for DC charging interface, namely: CCS 1 in the United States (North America), CHAdeMO in Japan, CCS 2 in Europe, and GB/T in China. The rest of the world basically follows the US/European standards.