It's simple, you just have a mechanical lock like Tesla's original CCS to NACS adapter, you connect the DCFC to the adapter, and then when the adapter is connected to the car, a spring loaded pin or other device is pressed in by the body of the car's inlet that locks the DCFC whip to the adapter, then the car locks the adapter as it normally would. This then prevents removal until the car decides it's safe (all high-voltage is removed), then you can remove the adapter from the car, which then releases the spring pin, and then removal of the adapter is possible. That's all that's needed!
Even if the DCFC can somehow stop the high-voltage in time when prox or pilot is lost, a fault in the EV, such as a welded contactor, could leave dangerous voltage present, so the electromechanical latch on the car is absolutely required for safety. CHAdeMO also has this, but they put the lock on the handle side rather than the car. CCS puts this on the car, which makes sense, as the car would usually have a lock anyway just to prevent people from disconnecting peoples cars without permission. This is already part of ALL DCFC standards, so all that's needed is for the adapter manufacturers to look at the standard and implement it safely, it's simple to understand if you are an Electrical Engineer, but they chose to design something unsafe instead. On Tue, Sep 24, 2024 at 11:17 AM Ron via EV <ev@lists.evdl.org> wrote: > Most of this discussion is either over my head or out of my wheelhouse. > That said: > > Would it work to have a locking connector combined with a tether activated > power disconnect and lock release? > > I'm envisioning a spring-wound reel of cord that trips a disconnect and > release in a safe and non-destrucive way before the cord end and cable ends > reach their limits. > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20240924/bb5cca1f/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
