What are the uses of bidirectional charging?īidirectional chargers can be used for two different applications. See the V2G section below for details on the vehicle-to-grid standards. The purpose of this standard is to detail the communication between an EV (BEV or a PHEV) and the EVSE (Electric Vehicle Supply Equipment), more commonly known as an EV charger. The latest standard for communication between an EV and a bidirectional charger is ISO 15118:2014 - Road vehicles - Vehicle-to-Grid Communication Interface. The basic operating principle of a bidirectional EV charger is very similar to bidirectional inverter-chargers , which have been used for backup power in home battery storage systems for over a decade.īidirectional charger standards - This is a brief technical summary of the current bidirectional charger standard. To supply power to a home, bidirectional chargers also incorporate equipment to manage the loads and isolate the house from the grid during an outage, known as islanding.