Charger
EV
Charging gun connect to vehicle inlet, proximity signal⑦ detected
User
initiate
②
Active charge sequence signal 1 via switch d1
Detect charge sequence signal 1 from Charger via opto f
⑧ ⑨
Transmit battery parameters and state
Check compatibility of protocol and vehicle battery characteristics
⑧ ⑨
Transmit charger parameters and status
Compatibility check of protocol and charger output capability
④
Active switch k to signal charging enable to Charger Send vehicle charging enable flag via CAN
Detect charge permission from vehicle via opto j
⑩
Locking mechanism activated Perform insulation validation Active charge sequence signal 2 via switch d2 to signal charger ready
Detect charge sequence signal 2 from CS via opto g
⑧ ⑨
Check batter condition, temperature, etc. Calculate optimal charging current Transmit charging current request every 100ms Checking input current value and error
Output current Checking circuit condition, charging time, etc
Battery reached target SoC Terminate charging
⑧ ⑨
Reduce current request value till zero
Reduce output current till zero
④②⑩
Confirm zero input current EV contactor OFF Send charging stop signal k
Recognize charging stop j Terminate charging process d1 d2 Connector unlock
*Charger initiate charge handshake phase first
*Vehicle enable charge permission to switch to next charging loop stage
*Pre-charge action before start power transmission in charging loop phase
*Termination of charging operation can be initiated by Vehicle or Charger