Wouldn't it be convenient if all you had to do was simply plug the charging cable into the electric vehicle and charging station and all the authentication, authorisation, billing and charging control processes occurred automatically in the background? Without the hassle of carrying around RFID cards and without the need to scan a QR code with your mobile phone in rainy weather?
This simple "plug-and-charge" - or "park-and-charge" mechanism in the case of inductive charging stations - is one of the ideas behind the communication standard ISO 15118, which will be applied between electric vehicles and charging stations and has already been internationally standardised.
Internationally recognised ISO and IEC standard
In 2009, the international standardisation bodies ISO and IEC joined forces and started a standardisation initiative called "Road vehicles - vehicle-to-grid communication interface", which developed the specification of a digital IP-based communication protocol between electric vehicles and charging stations.
This standard is based on the analogue charging method according to IEC 61851 and supplements this safety protocol with a powerful digital protocol at a higher level of communication for the transfer of energy-related, value-added information.
The standardisation of this protocol has undergone several steps, whose status I always keep up to date here.