CCS1 EV Plug Combo 1 EV connector for Fast EV Charging Station 150A 200A 250A 300A CCS1 EV connector DC Fast EV Charger

The CCS Combo 1 vehicle inlet adds two dc fast-charging pins to the J1772 ac charging interface.

Although there are several different types of CCS connectors, they all use the same communication protocol to negotiate and control the charging process. CCS interfaces use two basic types of communication.

The first mode, known as Basic Signaling (BS), is the same PWM scheme transmitted over the CP contact used by J1772 ac charging systems for safety-related functions and, in the case of ac charging, to advertise the power level the available from the charging station. The only addition for the combo connector is that the station can transmit a pulse width of 5% that indicates the High Level Communication (HLC) protocol should be used.

The HLC protocol involves transmitting a modulated high-frequency signal over the CP contact (also known as power-line communication or PLC) based on the standard DIN SPEC 70121 and the ISO/IEC 15118 standard¹¹ that can be used to transmit digital commands and information. In addition to controlling dc charging operations, HLC can be used to support other advanced services, such as vehicle-to-grid (V2G) load sharing.