Physical Connection
Auxiliary Power + Handshake&Recognition
Configuration
Pre-charge & Charging
Charging shutdown
6V
Charger side Check point 1
12V
6V
Vehicle side Check point 2
12V
4V
6V
6V
12V
6V
12V
User press mechanical switch S and detach Charging Gun from Charger
User connected charging gun to vehicle inlet (*mechanical switch S still hold open)
User release switch S (it return to normal close position)
Disconnection
CAN communication
Charger and Vehicle confirm physical insertion and locking using analog voltage levels on the charging checkpoint lines
- Charger closes S3 and S4 to supply low-voltage auxiliary power to the Vehicle - Charger also start perform insulation check on its side + cable - Charger and Vehicle send initial handshake messages(protocol charger & battery general information)
- Charger and vehicle exchange charging session setup parameters - Vehicle close its side DCFC contactors, start insulation monitoring and signal it's ready - Charger check the vehicle side HV Batt voltage, ensure system is ready
- Charger close its side DCFC contactors and start precharge sequence - Both vehicle and charger enter charging loop communication and power transmission
- Vehicle and charger send message to start shutdown sequence - Vehicle and charger open their side DCFC contactors