🚗 Automotive · State Machine
EV Charging Session State Machine
Every state of an electric vehicle charging session at a public charger, from plug-in to payment, including faults and idle fees.
Drawing diagram…
What this diagram shows
- Charging starts only after the driver is authorised
- Faults stop charging safely and bill only energy delivered
- Idle fee starts if the car stays plugged in after charging
Prompt used
State machine for an EV charging session (OCPP style): Available, Preparing when the cable is plugged in, Authorising via app or RFID card, Charging, Suspended by the car or the charger, Finishing, then Payment and back to Available. A fault moves to Faulted. If the car stays plugged in after charging, it goes to Idle with an idle fee.
Mermaid code
stateDiagram-v2 [*] --> Available Available --> Preparing: Cable plugged in Preparing --> Authorising: App or RFID tap Authorising --> Charging: Authorised Authorising --> Available: Rejected Charging --> Suspended: Car or grid pauses Suspended --> Charging: Resume Charging --> Finishing: Battery full or driver stops Charging --> Faulted: Charger fault Faulted --> Finishing: Bill energy delivered Finishing --> Idle: Car still plugged in Idle --> Payment: Unplugged (idle fee) Finishing --> Payment: Unplugged Payment --> Available
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