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Re: Battery Ageing Model

Posted: Fri Jul 05, 2019 10:50 pm
by JejuSoul
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Am re- posting the warranty info for the battery capacity warranty. It is this that has the 70% limit.
It applies to the car not the first owner.

The warranty manuals are here.
USA: 2017 Soul EV Warranty Manual
Canada: 2016 Soul EV Warranty Manual

The Korean warranty is 10 years, 160,000km to 70% SOH.
The United States is 10 years, 100,000 miles to 70% SOH.
The Canadian warranty is 8 years, 160,000km to 70% SOH
Europe is 7 years, 150,000km to 70% SOH.

Re: Battery Ageing Model

Posted: Sat Jul 06, 2019 5:45 am
by guiacan
for my previous data points, refer to that post
http://www.mykiasoulev.com/forum/viewtopic.php?f=6&t=434&p=8387#p8387

2018-09-30
odo : 22459 km
SOH : 27,2 kWh (100,9%)
det (min/max) : 8 / 10,2
ccc/cdc : 4506 / 4588 ah
cec/ced : 1652 / 1643 kWh
optime : 392
batt temp : 12 C

2018-11-04
odo : 24053 km
SOH : 27,5 kWh (102%)
det (min/max) : 6,8 / 9,2
ccc/cdc : 5578 / 5697 ah
cec/ced : 2047 / 2042 kWh
optime : 498
batt temp : 3 C
outside temp : 4 C

2019-02-23
odo : 27739 km
SOH : 27,5 kWh (102%)
det (min/max) : 6,8 / 9,2
ccc/cdc : 8801 / 9058 ah
cec/ced : 3268 / 3259 kWh
optime : 845
batt temp : 0 C
outside temp : -8 C

2019-07-06
odo : 33955 km
SOH : 28,1 kWh (103,2%)
det (min/max) : 5,1 / 8,5
ccc/cdc : 12923 / 13286 ah
cec/ced : 4789 / 4773 kWh
optime : 1271
batt temp : 26 C
outside temp : 23 C

Re: Battery Ageing Model

Posted: Tue Jul 09, 2019 5:38 am
by JejuSoul
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guiacan - thanks for the data.
I have copied your data into my excel table, and adjusted the values for the BMS reset.
The trend line for your car is very similar to another car in Quebec (Siluzium's) for which we have a lot of data for.
If this continues it will add to the data we are getting that the batteries do not last as well in an occasionally extremely cold climate.
Note - the worst climate for any EV without proper TMS is an extremely hot climate like Phoenix, Arizona.

My car shown in blue in the chart is not one of the best we are tracking, merely average.
The best cars are mostly in Northern Europe which has a much cooler summer than I do.

But your car may well improve its trend. The initial values are bad from the time it was a demo car before you bought it.
Another car in the Netherlands (Zunige Rider's) started badly because of this, and is now one of the best.

Image

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Re: Battery Ageing Model

Posted: Fri Jul 12, 2019 1:41 pm
by Oinq
Now with the weather nice and warm I decided to force a calibration on my battery.


My SOH jumped back to almost 110%; it's now in 109.6%

The interesting part is, as you guys might remember I'm the "crazy" guy that recharges his battery with the lowest possible current; 6A.

With Ambient temperatures around 25°C

Image



My cell temperature map is not that different; reading taken 10 minutes after recharging.

Image


This comes reinforce my theory (and experience from my older Peugeot iOn, where we concluded in other forum that heat kills batteries) that I might be in the correct path where recharging the slowest possible rate is healthy, countering Kia's opinion where we should not use the "trickle" charger to regularly recharge the car; I'm not using it, but I have set my OpenEVSE to 6A.

Of course the down side of this is, I took 26h to go from 16% to 100%. Not many people can afford to do this.