JejuSoul
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Comparing layout of the Soul EV battery with other EVs

Tue Sep 06, 2016 7:19 pm

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First: Here's some images and data of the Soul EV battery.
Click an image to see the bigger version.

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There are details about the chemistry here - Comparing Battery Chemistries

The Soul EV has a battery by SK Innovation.
It has 192 polymer pouch type cells, lithium nickel manganese cobalt oxide (NMC) cathode, .... Each 40Ah battery cell has energy density of 200 Wh/kg
They are laid out in a series string of 96 sets of 2 parallel cells.
The rated capacity of the pack is 75Ah, whereas the measured total capacity is about 85Ah. Hence the rated capacity of each cell is 37.5Ah whereas actual is about 42Ah
The 2015 Soul EV battery pack is 30.5 kWh and weighs 202.8kg -> Gravimetric Energy Density = 150.4 Wh/kg


The battery cell chemistry in the Kia Soul EV is probably NCM 622. It has never been confirmed but the energy density matches what we now know is the energy density of an NMC 622 cell in the B olt EV, and this article SK Innovation rolls out advanced batteries states :

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SK Innovation was the first in the world to succeed in the commercial production of advanced NCM 622 batteries.
Last edited by JejuSoul on Wed May 16, 2018 7:01 am, edited 10 times in total.
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JejuSoul
Posts: 1220
Joined: Wed Jul 08, 2015 6:47 am
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Re: Comparing the Soul EV battery with the Ioniq EV

Tue Sep 06, 2016 7:43 pm

Now the same data from the I oniq EV

The battery pack is much further back in the vehicle. This is probably because the roof is so much lower than the Soul. There is less space under the seats. I prefer the Soul EV layout, but the I oniq has the advantage of greatly reduced drag.

There's a great comment about the battery layout by anticitizen13.7 written in Jan 2016 on the TMC Forum -
...the I ONIQ is first and foremost designed around a gas/electric hybrid powertrain. If you look at the detailed graphic of the unibody structure, the floorpan is Advanced High Strength Steel (AHSS) rated for over 60 Kgf. You can see the tunnel built for the exhaust pipe, which exists in the powertrain diagram. This is important because it almost certainly rules out the use of a skateboard battery platform in the pure EV version of the I ONIQ (deleting this floorpan to use a skateboard battery would have serious consequences for the rest of the body and chassis, basically requiring an entire re-design). This has several probable consequences for the BEV edition: worse weight distribution, higher center of gravity, and lower cargo space versus T esla, GM, and Nissan....


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High Voltage Battery System
Item                          Specification        Note
Cell                                    96        -
Rated Voltage (V)               360        -
Capacity (Ah)                    78        -
Energy (kWh)                    28        -
Weight (kg)                        271.8        -
Cooling System                  Air Cooled      Forced Air Cooled


The I oniq EV has a battery by LG Chem.
It has 192 polymer pouch type cells laid out in a series string of 96 sets of 2 parallel cells.
The rated capacity of the pack is 78Ah Hence the rated capacity of each cell is 39Ah.
The total energy capacity is 31kWh ( What I have heard from people who have heard from LG, this has not been confirmed by a lab test.)

The I oniq EV battery pack is 31 kWh and weighs 271.8kg -> Gravimetric Energy Density = 114 Wh/kg

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Edit: Originally I didn't believe the 271.8kg figure - but I've seen that number and the 260kg number frequently elsewhere.

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The pure-electric version is much simpler, with a larger, 118bhp electric motor and a 28kWh, 260kg battery.

From - Hyundai I oniq review: A Prius beater from South Korea?

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The battery cell used in the I oniq EV is probably LG Chem's LQ 1729-A2 43Ah Cell.
see: PDF datasheet for Lithium-Ion 43 Ah L3 LG Chem – LQ 1729-A2 Cell

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192 cells * 43Ah * 3.75V = 30.96kWh which confirms that the total capacity of the I oniq EV is 31kWh.
The energy density of a single cell is 161.25 Wh / 0.966kg = 167Wh/kg
Hence it is probably not NMC622.

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Last edited by JejuSoul on Wed May 16, 2018 7:19 am, edited 10 times in total.
The codes for using Torque Pro can be found by clicking the link in the website icon under my user name on the left.

JejuSoul
Posts: 1220
Joined: Wed Jul 08, 2015 6:47 am
Location: Jeju
Contact: Website

Re: Comparing the Soul EV battery with the Ioniq EV

Tue Sep 13, 2016 6:02 pm

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Now the B olt.

While Hyundai is tight-lipped about details of the LG Chem battery in the I oniq EV, GM seems to positively boast and pour out details about the newer version LG Chem battery cells in their Chevy B olt.

Like the Soul EV the B olt battery pack goes below the seats.

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The C hevy B olt battery consists of 288 lithium-ion cells in ten battery modules with a total capacity of 60 kWh.

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There are lots more pictures and details here Deep Dive: Chevrolet Bolt Battery Pack, Motor And More

also - Drive Unit and Battery at the Heart of Chevrolet Bolt EV

Battery stats:

60 kWh of energy for 238 miles EPA range
battery weight 436 kg
160 kW power output
288 polymer pouch type cells laid out in a series string of 96 sets of 3 parallel cells.
350 V nominal voltage

The B olt EV battery pack has active liquid thermal management like the Volt or M odel S. Like the Volt, there are thin aluminum fins or plates that sandwich between each battery cell. In the Volt, these fins contain small channels with liquid coolant flowing inside. In the Bolt, the fins are passive and do not contain liquid channels. Instead, the fins are connected at the bottom to an active liquid thermal plate which has coolant running through it. The I oniq EV battery pack only has Air Cooling so logically this pack should be heavier.


The 2017 B olt battery pack is 60 kWh and weighs 435kg -> Gravimetric Energy Density = 138 Wh/kg
Last edited by JejuSoul on Thu Mar 29, 2018 8:45 am, edited 2 times in total.
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JejuSoul
Posts: 1220
Joined: Wed Jul 08, 2015 6:47 am
Location: Jeju
Contact: Website

Re: Comparing the Soul EV battery with the Ioniq EV

Sun Dec 04, 2016 4:36 am

The Soul EV has a battery by SK Innovation.
It has 192 polymer pouch type cells, they are laid out in a series string of 96 sets of 2 parallel cells.

The I oniq EV has a battery by LG Chem.
It has 192 polymer pouch type cells laid out in a series string of 96 sets of 2 parallel cells.

The Torque Pro codes to measure the cell voltages for these two cars are identical.
More info here about the BMS data for the I oniq EV - Setting up Torque to show BMS data on the Ioniq EV

Code: Select all

, Extra BMS data for Kia Soul EV using Torque Pro
, These are the 96 individual cell voltages
Name,ShortName,ModeAndPID,Equation,Min Value,Max Value,Units,Header
000_Cell Voltage 1,Cell 1,2102,e/50,0,5,V,7E4
000_Cell Voltage 2,Cell 2,2102,f/50,0,5,V,7E4
000_Cell Voltage 3,Cell 3,2102,g/50,0,5,V,7E4
000_Cell Voltage 4,Cell 4,2102,h/50,0,5,V,7E4
000_Cell Voltage 5,Cell 5,2102,i/50,0,5,V,7E4
000_Cell Voltage 6,Cell 6,2102,j/50,0,5,V,7E4
000_Cell Voltage 7,Cell 7,2102,k/50,0,5,V,7E4
000_Cell Voltage 8,Cell 8,2102,l/50,0,5,V,7E4
000_Cell Voltage 9,Cell 9,2102,m/50,0,5,V,7E4
000_Cell Voltage 10,Cell 10,2102,n/50,0,5,V,7E4
000_Cell Voltage 11,Cell 11,2102,o/50,0,5,V,7E4
000_Cell Voltage 12,Cell 12,2102,p/50,0,5,V,7E4
000_Cell Voltage 13,Cell 13,2102,q/50,0,5,V,7E4
000_Cell Voltage 14,Cell 14,2102,r/50,0,5,V,7E4
000_Cell Voltage 15,Cell 15,2102,s/50,0,5,V,7E4
000_Cell Voltage 16,Cell 16,2102,t/50,0,5,V,7E4
000_Cell Voltage 17,Cell 17,2102,u/50,0,5,V,7E4
000_Cell Voltage 18,Cell 18,2102,v/50,0,5,V,7E4
000_Cell Voltage 19,Cell 19,2102,w/50,0,5,V,7E4
000_Cell Voltage 20,Cell 20,2102,x/50,0,5,V,7E4
000_Cell Voltage 21,Cell 21,2102,y/50,0,5,V,7E4
000_Cell Voltage 22,Cell 22,2102,z/50,0,5,V,7E4
000_Cell Voltage 23,Cell 23,2102,aa/50,0,5,V,7E4
000_Cell Voltage 24,Cell 24,2102,ab/50,0,5,V,7E4
000_Cell Voltage 25,Cell 25,2102,ac/50,0,5,V,7E4
000_Cell Voltage 26,Cell 26,2102,ad/50,0,5,V,7E4
000_Cell Voltage 27,Cell 27,2102,ae/50,0,5,V,7E4
000_Cell Voltage 28,Cell 28,2102,af/50,0,5,V,7E4
000_Cell Voltage 29,Cell 29,2102,ag/50,0,5,V,7E4
000_Cell Voltage 30,Cell 30,2102,ah/50,0,5,V,7E4
000_Cell Voltage 31,Cell 31,2102,ai/50,0,5,V,7E4
000_Cell Voltage 32,Cell 32,2102,aj/50,0,5,V,7E4
000_Cell Voltage 33,Cell 33,2103,e/50,0,5,V,7E4
000_Cell Voltage 34,Cell 34,2103,f/50,0,5,V,7E4
000_Cell Voltage 35,Cell 35,2103,g/50,0,5,V,7E4
000_Cell Voltage 36,Cell 36,2103,h/50,0,5,V,7E4
000_Cell Voltage 37,Cell 37,2103,i/50,0,5,V,7E4
000_Cell Voltage 38,Cell 38,2103,j/50,0,5,V,7E4
000_Cell Voltage 39,Cell 39,2103,k/50,0,5,V,7E4
000_Cell Voltage 40,Cell 40,2103,l/50,0,5,V,7E4
000_Cell Voltage 41,Cell 41,2103,m/50,0,5,V,7E4
000_Cell Voltage 42,Cell 42,2103,n/50,0,5,V,7E4
000_Cell Voltage 43,Cell 43,2103,o/50,0,5,V,7E4
000_Cell Voltage 44,Cell 44,2103,p/50,0,5,V,7E4
000_Cell Voltage 45,Cell 45,2103,q/50,0,5,V,7E4
000_Cell Voltage 46,Cell 46,2103,r/50,0,5,V,7E4
000_Cell Voltage 47,Cell 47,2103,s/50,0,5,V,7E4
000_Cell Voltage 48,Cell 48,2103,t/50,0,5,V,7E4
000_Cell Voltage 49,Cell 49,2103,u/50,0,5,V,7E4
000_Cell Voltage 50,Cell 50,2103,v/50,0,5,V,7E4
000_Cell Voltage 51,Cell 51,2103,w/50,0,5,V,7E4
000_Cell Voltage 52,Cell 52,2103,x/50,0,5,V,7E4
000_Cell Voltage 53,Cell 53,2103,y/50,0,5,V,7E4
000_Cell Voltage 54,Cell 54,2103,z/50,0,5,V,7E4
000_Cell Voltage 55,Cell 55,2103,aa/50,0,5,V,7E4
000_Cell Voltage 56,Cell 56,2103,ab/50,0,5,V,7E4
000_Cell Voltage 57,Cell 57,2103,ac/50,0,5,V,7E4
000_Cell Voltage 58,Cell 58,2103,ad/50,0,5,V,7E4
000_Cell Voltage 59,Cell 59,2103,ae/50,0,5,V,7E4
000_Cell Voltage 60,Cell 60,2103,af/50,0,5,V,7E4
000_Cell Voltage 61,Cell 61,2103,ag/50,0,5,V,7E4
000_Cell Voltage 62,Cell 62,2103,ah/50,0,5,V,7E4
000_Cell Voltage 63,Cell 63,2103,ai/50,0,5,V,7E4
000_Cell Voltage 64,Cell 64,2103,aj/50,0,5,V,7E4
000_Cell Voltage 65,Cell 65,2104,e/50,0,5,V,7E4
000_Cell Voltage 66,Cell 66,2104,f/50,0,5,V,7E4
000_Cell Voltage 67,Cell 67,2104,g/50,0,5,V,7E4
000_Cell Voltage 68,Cell 68,2104,h/50,0,5,V,7E4
000_Cell Voltage 69,Cell 69,2104,i/50,0,5,V,7E4
000_Cell Voltage 70,Cell 70,2104,j/50,0,5,V,7E4
000_Cell Voltage 71,Cell 71,2104,k/50,0,5,V,7E4
000_Cell Voltage 72,Cell 72,2104,l/50,0,5,V,7E4
000_Cell Voltage 73,Cell 73,2104,m/50,0,5,V,7E4
000_Cell Voltage 74,Cell 74,2104,n/50,0,5,V,7E4
000_Cell Voltage 75,Cell 75,2104,o/50,0,5,V,7E4
000_Cell Voltage 76,Cell 76,2104,p/50,0,5,V,7E4
000_Cell Voltage 77,Cell 77,2104,q/50,0,5,V,7E4
000_Cell Voltage 78,Cell 78,2104,r/50,0,5,V,7E4
000_Cell Voltage 79,Cell 79,2104,s/50,0,5,V,7E4
000_Cell Voltage 80,Cell 80,2104,t/50,0,5,V,7E4
000_Cell Voltage 81,Cell 81,2104,u/50,0,5,V,7E4
000_Cell Voltage 82,Cell 82,2104,v/50,0,5,V,7E4
000_Cell Voltage 83,Cell 83,2104,w/50,0,5,V,7E4
000_Cell Voltage 84,Cell 84,2104,x/50,0,5,V,7E4
000_Cell Voltage 85,Cell 85,2104,y/50,0,5,V,7E4
000_Cell Voltage 86,Cell 86,2104,z/50,0,5,V,7E4
000_Cell Voltage 87,Cell 87,2104,aa/50,0,5,V,7E4
000_Cell Voltage 88,Cell 88,2104,ab/50,0,5,V,7E4
000_Cell Voltage 89,Cell 89,2104,ac/50,0,5,V,7E4
000_Cell Voltage 90,Cell 90,2104,ad/50,0,5,V,7E4
000_Cell Voltage 91,Cell 91,2104,ae/50,0,5,V,7E4
000_Cell Voltage 92,Cell 92,2104,af/50,0,5,V,7E4
000_Cell Voltage 93,Cell 93,2104,ag/50,0,5,V,7E4
000_Cell Voltage 94,Cell 94,2104,ah/50,0,5,V,7E4
000_Cell Voltage 95,Cell 95,2104,ai/50,0,5,V,7E4
000_Cell Voltage 96,Cell 96,2104,aj/50,0,5,V,7E4
Last edited by JejuSoul on Wed Feb 22, 2017 7:12 am, edited 2 times in total.
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JejuSoul
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Re: Comparing the Soul EV battery with the Ioniq EV

Sun Dec 11, 2016 9:00 pm

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Here's some images from the Service Manuals.

1a/ Soul EV battery without battery heater

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1b/ Soul EV battery heater

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2a/ I oniq EV battery without battery heater

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2b/ I oniq EV battery heater

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Translating from the Korean
1. High Voltage Battery Pack Assembly
2. Voltage Protection Device (VPD)
3. Busbar
4. Cell Monitoring Unit (CMU)
5. Voltage & Temperature Sensor Wiring Harness
6 High Voltage Battery Heater
7. High Voltage Battery Heater Temperature Sensor
Last edited by JejuSoul on Wed Feb 22, 2017 7:22 am, edited 2 times in total.
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JejuSoul
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Joined: Wed Jul 08, 2015 6:47 am
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Re: Comparing the Soul EV battery with the Ioniq EV

Tue Jan 10, 2017 5:16 am

The best looking battery pack schematic I've seen so far is this one for the Audi Q8 PHEV.
It's a Samsung SDI 17.9 kWh pack.
It seems Volkswagen and BMW are now both going with Samsung SDI, whereas Daimler is using SK Innovation

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JejuSoul
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Re: Comparing the Soul EV battery with the Ioniq EV

Thu Feb 23, 2017 6:33 am

Some old YouTube videos of the Soul EV, with screen shots to show the battery layout.

https://www.youtube.com/watch?v=jh97gZjjgWY

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https://www.youtube.com/watch?v=AtJ9GoYUPyU

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JejuSoul
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Re: Comparing the Soul EV battery with the Ioniq EV

Wed May 03, 2017 10:52 pm

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The best info we have for researching battery data is the American Vehicle Testing Activity. It includes lab data which tells us the real stats of the battery. Some Auto-makers will only describe the total capacity, others will only describe the usable. All are prone to exaggeration. It's a shame there are not more cars in their facility. The list is here - https://avt.inl.gov/fuel-type/electric

I'm currently trying to understand the Kia Ray EV but don't have all the original stats. I do know that it is rated as 16.4kWh = 88cells * 3.75V * 50A , but don't know if that is total or usable capacity, or if the numbers match the reality.

So I am looking at a comparable car the M itsubishi i -MiEV . Some details from - https://cleantechnica.com/2016/01/06/a- ... ery-packs/

The North American spec M itsubishi i -MiEV is composed of a 16kWh
under-the-seat pack in a non-metallic clamshell enclosure. Inside is 88
Lithium Manganese Oxide prismatic cells, 50aH and 3.75V each, configured
in series for a nominal pack voltage of 330V . . .

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By looking at the Vehicle Specifications and Testing Results at the AVTA site we can see that the usable capacity is actually about 13.5kWh.
And from the Battery Pack Laboratory Testing Results we can see that the baseline total capacity is actually 14.8kWh and 44Ah

It is these actual values that I would use for making comparisons for deterioration on an older car. It is best of course to test against the same car, but when you buy a used car, you don't get the chance.
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JejuSoul
Posts: 1220
Joined: Wed Jul 08, 2015 6:47 am
Location: Jeju
Contact: Website

Re: Comparing the Soul EV battery with the Ioniq EV

Sun May 07, 2017 4:50 pm

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Here's some more photos of the inside of a Soul EV battery pack. Taken from a pack that was fully replaced, due to a single cell failing.
The car in Seattle - battery died due to 1 bad cell - wouldn't charge - they replaced the whole pack - cost 24,600USD.

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Here's an annotated version of the picture above -

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BMS is the Battery Management System.
PRA is the Power Relay Assembly - for details see the Hyundai patent for - ELECTRIC VEHICLE POWER RELAY ASSEMBLY
The 8 battery modules are numbered.
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JejuSoul
Posts: 1220
Joined: Wed Jul 08, 2015 6:47 am
Location: Jeju
Contact: Website

Re: Comparing layout of the Soul EV battery with other EVs

Fri Jun 23, 2017 5:30 pm

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Here's some graphics showing the LG Chem 1.56kWh battery inside the Hyundai I oniq Hybrid.
Have looked at this recently because it shares the same BMS as our Hyundai / Kia EV's.
It is identical to the Kia N iro Hybrid.

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There are 64 cells in series. Four modules each with 16 cells.

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The 2016 version sold in Korea and Europe had a traditional 12V battery.

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The latest version uses extra lithium ion cells to replace the 12V battery.
Labelled 10 in the photo below.

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The cells used are rated 6,5A. Perhaps the actual cells used are these with a total 7.5A
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Also see the thread - Comparing Hyundai / Kia Electric Vehicle Batteries

The graphic below is from a presentation by Jerome Gregeois at the Public workshop on Lead-Acid Batteries and Alternatives : Beyond the Car.
The meeting was organized by CalEPA on November 6, 2017, in Sacramento, California.
Ioniq HEV & Niro HEV presentation

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Last edited by JejuSoul on Tue Jun 12, 2018 11:43 pm, edited 3 times in total.
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