The EVCC (Electric Vehicle Charging Controller) is an onboard control unit found in North American Electric Vehicles that manages the full charging process and ensures smooth communication with the charging station’s controller, often referred to as the SECC (Supply Equipment Communication Controller).
In practice, the EVCC coordinates the data exchange between the EV and the charging equipment to guarantee safe, efficient, and compliant charging. It regulates how much power the vehicle can draw, verifies electrical compatibility with the station, and adapts the charging session based on battery conditions and system limits. This controller is essential for maintaining optimal charging performance, protecting battery health, and meeting safety requirements across modern AC and DC charging infrastructures.
Each EVCC also includes a unique identifier, allowing some charging networks to automatically recognize the vehicle for features such as AutoCharge or plug-and-charge–style authentication.