800V Hyundai Ioniq 5 Battery

[Kelju]

Interesting read and a quite good video:
https://insideevs-com.cdn.ampproject.or ... pened/amp/

Does anybody have further details on the BMS on this battery?
Are there slave units in the modules and if so, what ASICs might there be?

[deeamon]

I have 77,4kWh battery from kia ev6/ioniq 5. I'll check bms later and let you know.

[jon volk]

Whats the voltage and weight per module?

[Kutato72]

I haven't seen it yet, but I'm guessing:
- 6S2P bonded cells
- Cell connections at both ends
- One piece of BMU with part number 375A0-xxxx with MAX17841 based isoSPI bus
- 8 CMUs with part number 375A1-xxxx, each with 2-2 MAX17845 chips
- One MAX17845 chip handles 2 modules (12 cells), one CMU can handle 4 modules, so 8 CMUs can handle 32 modules.

What did I win?

[Domt177]

- With connecting wing
Width: 428mm, Depth: 158mm, Height: 109mm

- Connection wing not included
Width: 380mm, Depth: 136.5mm, Height: 109mm

Weight: 10.85kg

[jon volk]

I wonder what the output capability of these are. If I could get to 400v with 16 modules, that would get me to 38kwh and at 10.85 kg each, that would amount to a pretty good weight savings over my 32kwh 2x Volt packs. By the above dimensions, it seems I could get all 16 under the hood up front.

[FJ3422]

Watch out a bit with the modern cell chemistries. I don't know if these are already NCM811, but thermal stability of low-cobalt cells is way less then your current rock-solid LGX-P1/P1.5 NCM111/NCM333 cells. The core-cell-temperature at which decomposition starts is way lower on the low-cobalt chemistries. When they are new and have a very low internal resistance they may keep up, but when aging comes in and the internal resistance rises, the chance of a thermal runaway increases when torturing them with 1000 Amps.

I have not found any high-energy dense NCM811 modules yet that can safely delivery 500+ Amps. Bought some NCM811 MB EQA modules for the E30 project, but sold them again and got back to the NCM622 modules.

[arber333]

Watch out a bit with the modern cell chemistries. I don't know if these are already NCM811, but thermal stability of low-cobalt cells is way less then your current rock-solid LGX-P1/P1.5 NCM111/NCM333 cells. The core-cell-temperature at which decomposition starts is way lower on the low-cobalt chemistries. When they are new and have a very low internal resistance they may keep up, but when aging comes in and the internal resistance rises, the chance of a thermal runaway increases when torturing them with 1000 Amps.

I have not found any high-energy dense NCM811 modules yet that can safely delivery 500+ Amps. Bought some NCM811 MB EQA modules for the E30 project, but sold them again and got back to the NCM622 modules.

True! I have found out that those 56Ah and 60Ah cells really need to limit upper and lower quadrant of voltage. From 3.0V to 4.0V. Anything over those
edges causes much heat generation and premature wear on the cell.

[jon volk]

Interesting and somewhat disappointing. I would have hoped to see more higher output and lighter options as the years wear on but it seems these 10 year old cells still rank pretty high in function and robustness compared to other mass produced options.

[SuperV8]

Interesting and somewhat disappointing. I would have hoped to see more higher output and lighter options as the years wear on but it seems these 10 year old cells still rank pretty high in function and robustness compared to other mass produced options.

Seems power density and energy density are both opposing battery qualities? You can pick either but not both!

[cgalpin]

I have the opportunity to get some of these packs. Are you saying they are not good for a conversion unless using the full 800V configuration? Or using 32 reconfigured is fine?

[MarekN]

I have 77,4kWh battery from kia ev6/ioniq 5. I'll check bms later and let you know.

Have you been able to check the BMS? If so, could you please share your findings?

[m.art.y]

current rock-solid LGX-P1/P1.5 NCM111/NCM333 cells.

Hi, to your knowledge which battery packs use those and the NCM622?

[Jacobsmess]

Hi, to your knowledge which battery packs use those and the NCM622?

Panasonic prismatic ncm622 are used in the Lexus UX300E and other Toyota EVs but there aren't many abouts

[mane2]

I'm also pondering about buying 16x EV6 modules and having 400V pack. Any ideas how many amps those can push out?

Bad thermal stability .. so cooling is a must, I guess? I'm currently happily running Model S modules without cooling and they don't get hot at all.

[joeflickers]

I have 77,4kWh battery from kia ev6/ioniq 5. I'll check bms later and let you know.

IMG-20220118-WA0013.jpegIMG-20220118-WA0001.jpegIMG20220120120928.jpg

I have the same batteries 77kwh from ioniq 5..arranged the in half /96 series and pull about 500amps peak with no issues or temparure rise

Car now has 13,000km

[Bratitude]

I have the same batteries 77kwh from ioniq 5..arranged the in half /96 series and pull about 500amps peak with no issues or temparure rise

Car now has 13,000km

are you saying you have have the pack ie 16 modules and have no problem pulling 500amps peak?
or you have all 32 modules doubled up to make 96s.

[joeflickers]

are you saying you have have the pack ie 16 modules and have no problem pulling 500amps peak?
or you have all 32 modules doubled up to make 96s.

I have 32 modules to make 96s,my setup is w124 benz with lexus gs450h,i pull 500amps peak with no issue,i have an orion bms2,ive made sure to have 8 temperature sensor monitoring the battery and it hardly raises any temparature

[joeflickers]

are you saying you have have the pack ie 16 modules and have no problem pulling 500amps peak?
or you have all 32 modules doubled up to make 96s.

I have no battery cooling as it was imposible in my setup,so i have 16modules fronT and 16 at the rear,However im in Nairobi Kenya,we are at the equator(best weather in the world (18-32 Degrees max) all year round

[jerrykco]

I have 32 modules to make 96s,my setup is w124 benz with lexus gs450h,i pull 500amps peak with no issue,i have an orion bms2,ive made sure to have 8 temperature sensor monitoring the battery and it hardly raises any temparature

Hi Joe, I have this battery also and want to install it with a leaf em57 motor and a Zombieverter.
But for the battery I will need to have only a 400V system. It is yet to be determined if I will have room for all 32 modules or just use 16.
What work did you need to do to get the Orian BMS2 to support the battery in your configuration of 96s? Do you see an issue if I create a 400V pack?
Also have you (or anyone else) seen any info on getting the use of the Ioniq 5 BMS and the slave BMS's into thje Zombieverter for battery support?