Currently, the interfaces for electric vehicle (EV) charging stations primarily fall into the following categories: The proprietary Tesla interface, the CHAdeMO fast-charging interface, the Combo charging interface, the Mennekes fast-charging interface, and interfaces compliant with the GB/T 20234 standard.
The proprietary Tesla interface, exclusive to Tesla vehicles, features highly advanced technical standards; it boasts a maximum capacity of 120 kW and a peak current of 80 A. It is reported that using this interface allows a vehicle to acquire enough charge to travel over 300 kilometers in just 30 minutes.
The CHAdeMO fast-charging interface is primarily spearheaded by Japanese automakers-such as Nissan and Mitsubishi-and is widely adopted in Japanese-brand electric vehicles. It offers a maximum charging capacity of 50 kW, with a peak power output reaching 62.5 kW.
The Combo charging interface is a standard established by the Society of Automotive Engineers (SAE) in the United States. Its technical specifications include a maximum voltage of 500 V and a maximum current of 200 A, demonstrating robust charging capabilities.
The Mennekes fast-charging interface enjoys a very high penetration rate within the European Union; charging stations equipped with this interface can be found in almost every EU member state. Its technical standards specify a maximum power output of 44 kW and a maximum AC voltage of 480 V.
5. The GB/T 20234 interface: This is a national standard published by China in 2006, which details the connection methods for various charging currents-specifically 16 A, 32 A, and 250 A for AC charging, and 400 A for DC charging. While this standard draws heavily upon the guidelines proposed by the International Electrotechnical Commission (IEC) in 2003, it did not initially provide specific stipulations regarding the number of connector pins, physical dimensions, or interface pin definitions.
Subsequently, in 2011, China updated this standard (designated as GB/T 20234-2011), introducing more detailed specifications for parameters such as rated AC voltage, frequency, rated AC current, as well as rated DC voltage and rated DC current.
Regarding the issue of interface incompatibility between charging stations and vehicles, it is generally the case that the charging ports on the majority of new energy vehicles currently on the market adhere to unified standards. However, in specific situations where the connectors do not match, it is recommended to purchase a slow-charging adapter that complies with national standards; this is because, with the exception of Tesla, the slow-charging ports on all electric vehicles sold domestically share a uniform standard.
