Electric Vehicle Communication Controller (EVCC)

Main purposes of an EVCC

1. Communication with the charger
   • Exchanges information between the vehicle and the Electric Vehicle Supply Equipment (EVSE).
   • Communicates charging requirements, limits, and status.
2. Charging control
   • Helps establish and control the charging session.
   • Determines parameters such as charging voltage, current, and power.
3. Authentication and authorization
   • Supports identification of the vehicle/user before charging.
4. Safety
   • Ensures charging only starts when the required conditions are satisfied.
   • Monitors communication and charging states and can terminate charging if a fault occurs.
5. Advanced charging functions
   • Supports features such as Plug & Charge.
   • Can enable smart charging and, where supported, Vehicle-to-Grid (V2G) or bidirectional energy transfer.
6. Coordination with the vehicle’s systems
   • Interfaces with the vehicle’s control systems, typically through the vehicle network (e.g., CAN).
   • Communicates charging information to the Battery Management System (BMS) and other relevant controllers.