CCS2, also known as Combined Charging System 2, is a standard for charging electric vehicles (EVs) developed by the International Electrotechnical Commission (IEC). It combines both alternating current (AC) and direct current (DC) charging capabilities into a single charging connector. Here are the key specifications of CCS2 charging:
Connector Types: CCS2 uses a single plug design that incorporates two connectors in one: a standard AC Type 2 connector and additional DC power lines. The CCS2 connector allows for both AC and DC charging, making it versatile for different charging scenarios.
AC Charging: The CCS2 standard supports AC charging using the Type 2 connector. This allows for charging at power levels up to 43 kilowatts (kW) or higher, depending on the specific implementation. AC charging is typically used for slower charging at home, workplaces, or public charging stations.
DC Charging: CCS2 enables high-power DC fast charging, which is essential for longer trips and reducing charging time. It supports charging at power levels ranging from 50 kW up to 350 kW or more, depending on the charging infrastructure and the capabilities of the vehicle being charged. Higher power levels allow for faster charging times.
Charging Modes: CCS2 supports two main charging modes:
Mode 3: This is the AC charging mode that uses the Type 2 connector for single-phase or three-phase charging. It follows the IEC 61851-1 standard for AC charging.
Mode 4: This is the DC charging mode where power is supplied directly to the vehicle's battery. It uses the additional power lines in the CCS2 connector and follows the IEC 61851-23 standard for DC charging.
Communication Protocols: CCS2 utilizes the ISO 15118 communication protocol for bidirectional communication between the EV and the charging station. This allows for features such as authentication, billing, and advanced charging control.
Backward Compatibility: CCS2 is designed to be backward compatible with Type 2 connectors used for AC charging in Europe. This means that a CCS2-equipped vehicle can also charge at AC Type 2 stations, although at lower power levels.
CCS2 has become one of the most widely adopted charging standards globally, particularly in Europe and North America. It provides flexibility for EV owners by supporting both AC and high-power DC charging, making it suitable for various charging scenarios.
