Sparkler wrote:....before I realized that a partial QC was leaving something very hot. There is quite a stream of hot air that exits around the left front tire while quick charging, and stopping before it tapers down and gets a chance to cool off whatever is producing that heat must let the heat affect nearby systems when the fan shuts down.
This is an interesting observation!
The heat is coming from the AC condenser which is mounted across the front of the car. (The wind must have been just right when you felt it at the left side only.) The AC system has a freon-to-coolant heat exchanger. That coolant loop circulates to the battery pack to keep it cool when needed, (DCFC).
That coolant loop can also warm the battery when needed.
I stop a DCFC all the time after 10-15 minutes. I wait for the 48kW charge to taper off to 24kW @ ~80% point. Never had a problem.
But here's the deal;
I always then drive the car for at least 10 minutes to my home or wherever. The TMS continues to run to cool the battery pack.
Doing a 80% DCFC and then moving the car to a different parking spot and shutting down WILL leave the battery cells at a high temp
, and the TMS is now shut down
Could this be 'Bad Practice' for the battery pack?
Used '14 2LT w/ DCFC. +78 K miles.
Mostly free charging! Only one LONG visit to the shop....
GM needs Modern Troubleshooting tools for Modern EV's.
3 step Trouble Tree, 1st try car died again, 2nd try not covered / cost $800. 3rd try fixed the problem.