GB/T 20234 Connectors & Inlets
GB/T 20234 Plugs, socket-outlets, vehicle connectors, and vehicle inlets – Conductive charging of electric vehicles is a series of international standards that define requirements and tests for plugs, socket-outlets, vehicle connectors, and vehicle inlets for conductive charging of electric vehicles.
The AC standard (GB/T 20234.2) EV connector and inlet use the same interface connector as the European IEC 62196-2 Type 2 connectors but the gender of the GB/T 20234.2 connector and inlet has been reversed. GB/T 20234.2 specifies a male connector and female vehicle inlet. Like IEC 62196-2 Type 2 EVSE Outlets and Plugs, GB/T 20234.2 also specifies a female Charging Station Outlet and a male Charging Station plug. Furthermore, GB/T 20234.2 uses CC/CP (charging confirmation and control pilot) signals. IEC 62196-2 specifies PP/CP (proximity pilot and control pilot) signaling.
Mode 2 (250 V)
It allows mode 2 (250 V) or mode 3 (440 V) single-phase AC charging at up to 8 or 27.7 kW, respectively. In Mode 2, power is supplied with a current of 10/16/32A and a voltage of 250V. In Mode 3, power is supplied with a current of 16/32/63A and a voltage of 440V. Although the seven-pin interface does support three-phase AC power, KST’s current product offering only supports single-phase power.
In general, charging speeds are also limited by the vehicle’s onboard charger, which is usually less than 10 kW. The onboard charger converts the AC input power to DC.