Handle pack switchgear behavior at Tesla Superchargers
We drive a Hyundai e-GMP “800V” (Vmax >> 400V), so the ICCU and motor windings act to boost above and beyond the 500V bus at Superchargers. However, at most temperatures that means a power limit of 125-127.5kW. Is it possible for the app to detect affected vehicle/DCFC combinations and reflect this kind of derating in the location info and route plan?
I know some other “800V” makes that cut halves of the pack from series to parallel, which presumably cap differently due to their unique switchgear but still don’t get the 300+kW design speed of a v3.5 or v4.
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Comments3
Mahde - ABRP
Oct 1
Hello @mtkft,
That is not possible as of now since we do not have anything that makes changes for the e-GMP vehicles specifically. What values are there that you would need to change in order for the charging times at stations to be accurate? How much do they differ from the accurate numbers currently?
mtkft
Oct 2
Per OP, this has been affecting a whole class of cars since the advent of open NACS at Superchargers. OP also spelled out that the stated 325kW cannot be delivered because of current limits, so the flattened peak of ~127kW5 means 60% longer spent for a typ. 10-80 cycle. The ratio will differ with circumstance and make, but this isn’t some small gulf, so the ability to account for switchgear collisions isn’t small potatoes to anyone in any situation like mine.
Desmos graph below approximates EVKX data for the 84kWh pack aboard Ioniq 5, r are average rates, k_r compares r
Mahde - ABRP
Oct 5
I have spoken to my colleague who can confirm that we do make changes for the charging time and such when you are at a charging station with a higher output at 800V.