Battery cooling after supercharging longer?

[AustinP]

Hi folks,
We’ve had our car for more than 4 years and 175k km/110k miles. We have had many longer road trips so I know how my car behaves at SuCs.
We’re heading home and at the last 3 SuC, the car has kept the cooling at high speed after finishing for up to 5 minutes.
So to be clear: we stop supercharging, drive away and for about 5 minutes the fan for the cooling of the battery keep at almost full speed.
Temps are not high today: 20C / 70F.

Anyone else recognize this ?

Thanks for your replies.

 

[SSedan]

Given the mass of the pack this seems like reasonable behavior

 

[dnstommy]

I have had this happen a few time. Usually on SC when I charge to a high % like 90%. The last few % are really hard to do. Generates a lot of heat. I would also say this my be the older battery like mine. I know model 3's use the AC to cool the battery and the newer S/X are more efficient.

 

[ucmndd]

The last few % are really hard to do. Generates a lot of heat.

Ummm no.

 

[jerry33]

I have had this happen a few time. Usually on SC when I charge to a high % like 90%. The last few % are really hard to do. Generates a lot of heat.

That doesn't sound correct because the charging rate slows way down. However, it might be that because heat is generated earlier plus the heat generated when the driving begins again, the cooling is run to make sure there's no possibility of overheating. I've noticed that after Supercharging the Wh/mi goes up quite a bit when you start driving, so something is using that energy. Starting normally from home goes up to the 300s usually, but starting after an SC is in the 600s.

 

[NickleNiceness]

i noticed the higher energy use as well, the average for the first few miles was over 500, with a peak at 1100. My average speed was about 15 mph. And yes the fan\pump was going on high for a few minutes of that. I thought for a second i should sit at the charger for a bit to stabilize, but realized that 1) its not drawing any energy to handle the peaks, and 2), I'll get billed if I sit for more than 5 minutes. It would be nice if there was a short taper off period to stabilize the battery after charging