P100D SuperCharging Rate

[brianman]

I think I have pretty good educated guess what the construction/cooling/connections of new P100D packs are, but it is based on publicly available information.

I hope to hear more about this. Please make sure you follow-up on TMC when you have more to share. Thanks!

 

[FlatSix911]

Interesting reading

 

[vgrinshpun]

I hope to hear more about this. Please make sure you follow-up on TMC when you have more to share. Thanks!

Details posted here.

 

[ShotgunF15E]

P100D Supercharge from 25% to 75%
25% 116kw
30 116
35 113
40 113
45 113
50 113
55 113
58 109
60 106
61 102
62 97
63 95
64 91
65 89
66 87
67 87
68 86
69 84
70 81
71 79
72 75
73 71
74 66
75% 63kw

Here is my P90DL charging rates plotted against this P100D data:

 

[apacheguy]

The 100 data seem reasonable; the 90 data less so. Look here:

Tesla Ups Supercharger Charging Rate For Refreshed Model S 90D & P90D - Video

The 90 is capable of charging faster than indicated in your graph.

 

[Gizmotoy]

Here is my P90DL charging rates plotted against this P100D data:

There's a lot of area under that curve. I wonder what the real-world time savings is for these packs.

 

[Zoomit]

Here is Bjorn's recent P100D Supercharging video:

 

[apacheguy]

That's interesting. In the video he starts out with 1% battery and immediately sees 60 kw. Lots of folks claim that it takes 15-30 min before they notice any power with the new software versions.

My 85 kWh sustains 90 kW until 42-45%. The 100 sustains it until 56-57%. Would love to see battery temperature over CAN if anyone can manage it.

 

[apacheguy]

Also interesting that @NDR claims 90 kW is held until 65%. Suggests there might be a dynamic taper curve that depends on starting SOC and temperature.

Cmon Tesla, give this to the 85s! I'm fully confident that there is room for improvement depending on battery thermals but unfortunately Tesla has not updated the taper curve for over 2 years on the 85.

 

[David99]

That's interesting. In the video he starts out with 1% battery and immediately sees 60 kw. Lots of folks claim that it takes 15-30 min before they notice any power with the new software versions.

My 85 kWh sustains 90 kW until 42-45%. The 100 sustains it until 56-57%. Would love to see battery temperature over CAN if anyone can manage it.

I just did this. Watched the battery temperature while supercharging in my 85. It goes up to about 47-50 Celsius and then goes down as the power goes down. I had 15 Supercharger stops on my recent trip so I had opportunity to play around. I tried turning and and off range mode to arrive at higher or lower battery temperature at a Supercharger. It did not affect the charge speed nor how soon the taper kicks on. In other words it doesn't help to have cooler batteries. The Supercharger curve seems to be a rather rigid pre-programmed curve. It doesn't matter if I Supercharge at 100 degree ambient temps or at 10 degree. You would think the battery can be cooled much better at low ambient temps but there is no difference in the charge curve.

Keeping the battery too cold will just result in a reduction in charge speed and it will go up as the battery warms up.

From my observation and experience I think there is plenty room for improvement. Jason Hughes mentioned somewhere the charge port on the old cars gets too warm and would be a bottle neck for Supercharge speed.
It would be in Tesla's interest to improve what is possible to fight Supercharger congestion.

I will try to find the video I have of the battery temps during Supercharging

 

[apacheguy]

Agree for the 85. The taper is very rigid and pre programmed. For the 100 it appears that it is following different taper curves depending on battery thermals. Tesla could allow more flexibility in the 85s which could result in fast charge times depending on conditions, but to date they have not done this.

When I tracked battery temp last weekend, I noticed that I gets quite hot (like 45 C) before the compressor fires up to full tilt. As soon as the rates dropped below 100 kW, the compressor stepped down rapidly. If the compressor held constant, I'm confident that thermals could be kept in check and the 85 could hold 100 kW into the 50-60% range. The compressor could also kick in sooner and not wait until the battery reaches 45 C.

 

[apacheguy]

For instance, see my post #349 for battery temp:

Some California Superchargers not providing maximum charging rates

I don't believe the compressor ran. Or if it did, it was very brief.

 

[Zooomer]

I drove 125 miles approx and went from 91 to 41% battery before stopping at a SC station.
There was one other car there, it was 10 deg F
I plugged it and it went to 115kw
I don't know how long it took to charge but it was charged when i was done eating 81%

P100d AP2