EV charging, explained
How an electric vehicle and a charger agree on what to do, drawn from the standards: the circuits, the signals on the wire and the messages they exchange.
IEC 61851-1 · SAE J1772
Control Pilot
One wire, a ±12 V square wave and a few resistors run every AC charging session.
CCS · CHAdeMO · GB/T
DC charging session
One fast charge in five protocols: every message, signal and contactor from plug-in to unplug.
WebGL · Five protocols
A charge, on film
Watch every message fly down the cable between car and charger, then power pour in. Switch protocols and watch it again.
Drawn from
- IEC 61851-1
- SAE J1772
- IEC 62196-2
- DIN 70121
- ISO 15118-2
- ISO 15118-20
- CHAdeMO
- GB/T 27930