Thanks for that. Very helpful.-
The battery case for the new Ioniq is not the same as used in the New Soul EV, Kona & Niro. These 3 all have an inspection cover on the bottom of the pack seen on the underside of the car, below where the passenger seat is. The new Ioniq pack is placed further back on the car and looks exactly the same as the existing Ioniq pack placement.
There is some info about the battery inside - https://pushevs.com/2019/05/02/new-hyundai-ioniq-family/
The specs (see the link in “more info” section at the end of JejuSoul’s post) will give you the basics. I can’t see any significant changes from old model there but haven’t looked in detail.What battery improvements do the new HEV and PHEV Ioniqs get? Where could I read up on that?
Agree. As I said in another thread - the 70-80 km head start of the new Ioniq will almost disappear in the first 20 minutes stop at a 100 kW DC station in a long trip...If this is true, long distance traveling will not become faster using the upgraded version.
Considered numerically this difference in voltage is 12%, so that would (for equal current) decrease the allowed charging power by 12% too, so from 70 kW to 62 kW. There is still a gap from 62 to 34 kW to be explained.@Jan Treur
Part of the answer is that charging limitations are by current. The 38.3 battery nominal voltage is 319 V as compared to 360 V of the 28 battery, lower voltage means lower power for same current.
Also, the 34 kW charging rate is average, not maximal. The average rate of the 28 is less than 70 kW.
The site you have mentioned states the usable capacity as 28 kWh and estimates the total capacity as 30.5 kWh.Interesting info on https://ev-database.org/compare/efficiency-electric-vehicle-most-efficient - they estimating Ionic EV with 28kWh as 30.5kWh. Not like we do not know it is not 28kWh already, but good to see other sources to confirm it. And it is accessible capacity, meaning the real capacity is around 32kWh or more. when compared to other EV.
Yes, I was also thinking in that direction. Maybe the new battery is more densely packed so that more heat per cm3 is developed?I would add to my last post:
Another limitation for the refreshed Ioniq may be battery cooling. We don't know details but if it is still forced air cooling the smaller 28 kWh battery has an advantage of being cooled faster.
As I said, the 34 kW for the Ioniq38 is an average rate while the 70 you mention for the Ioniq28 is maximum and the average is lower (~60?). So 34-60 before voltage effect?Considered numerically this difference in voltage is 12%, so that would (for equal current) decrease the allowed charging power by 12% too, so from 70 kW to 62 kW. There is still a gap from 62 to 34 kW to be explained.
No, Ioniq28 has 96 groups (2 cells each) in series. Don't know about the Ioniq38 but my prediction is 88 groups of 2 in series. So, current limitation of, say, 150 A means 75 A per cell in both cases.Besides, the current can now be distributed over 36% more cells you can say, so assuming the same current per cell, the maximally allowed total current may also be 36% higher. So, not 62 kW but 62 *1.36 = 84 kW. This number has a huge gap with 34 kW. The mystery remains.
Bjorn Nyland did a road test between the 28kWh Ioniq and the 60kWh Ampera-e.There is one thing I do not understand.
The current version of the Ioniq EV can charge with power up to 70 kW if you use fast chargers with maximal power of 100 kW or more. For the upgraded battery it is indicated 80% in 54 minutes. As 80% of a 38.3 kWh battery is 30.6 kWh, this indication relates to a maximal average charging power of 34 kW. So, that is less than half of the maximal charging speed of the current version, whereas you would expect that a 36% bigger battery would allow 36% higher charging power as well. Is this correct?
If this is true, long distance traveling will not become faster using the upgraded version.
I cannot follow these calculations. Should I understand that the battery of the new 38 kWh version has fewer cells (88x2) than the battery of the 28 kWh version (96x2)? How many series are there?No, Ioniq28 has 96 groups (2 cells each) in series. Don't know about the Ioniq38 but my prediction is 88 groups of 2 in series. So, current limitation of, say, 150 A means 75 A per cell in both cases.