A Prototypical Implementation of an ISO-15118-Based Wireless Vehicle to Grid Communication for Authentication over Decoupled Technologies

The progress of the Wireless Power Transfer (WPT) in terms of standardization and products had their implication on the technologies used for the communication between Electric Vehicle (EV) and the Electric Vehicle Supply Equipment (EVSE). One of the most prominent Standards for this communication, the ISO IEC 15118, is in the process of standardizing a wireless means of EV-EVSE Vehicle-to-Grid (V2G) communication, next to the conductive, Plug and Charge (PnC) Standard, based on the Power Line Communication (PLC). Yet adapting the concepts of PLC and PnC to the wireless communication poses a series of challenges. This paper analyses the challenges implicated by the wireless communication, and provides a proof of concept prototypical ISO-15118 based implementation that provides a mechanism for achieving EV-EVSE Pairing, next to the Association and Authentication. This prototype implements the wireless V2G communication for the conductive charging case, yet most of the components are applicable to the inductive charging.