LG Chem -LG-E63 cell discussion

Discussion in 'Hyundai Kona Electric' started by electriceddy, Oct 21, 2020.

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  1. This data is amazingly interesting. Lots of work too.
    Still, it seems to me crazy that owners need to dig this deep into the design.
    But thanks.
     
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  3. Telek

    Telek New Member

    If the car computers are active and doing things, they should respond to OBD2 requests.
     
  4. Telek

    Telek New Member

    Just clarifying it says 4.166V for 100%.

    upload_2021-2-22_12-19-29.png

    Are you referring to this?

    upload_2021-2-22_12-23-26.png

    If so, that's a reference to the section 4.2.3 which is the original image posted. I saw 4.23 and assumed you meant 4.23V.
     
    electriceddy likes this.
  5. Telek

    Telek New Member

    The higher the SoC the faster the loss. So storing your battery at 100% for a year will lose about 5%, sounds about right. That's why they say to store at ~40% if you're not going to use it.
     
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  8. Telek

    Telek New Member

    Yeah I had kinda wondered the same thing.

    I suspect that it's something like dendrites. A poor separator can increase the odds of a dendrite breaching the separator, and the severity of it.

    So one problem is exacerbating the other.
     
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  9. News about the Ioniq 5 and the still unanswered question to Hyundai about the Kona battery issue/solution - not to mention my one-time use bolts.
     
  10. DasMeister

    DasMeister Member

    Just picked up my 2020 Kona electric this week

    anyway to tell when battery back was made ?
     
  11. Read the label on the back of the pack behind the suspension on the drivers side. It has manufacture date, part# and BMS ROM ID;)
     
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  13. DasMeister

    DasMeister Member

    so if date is after March 2020 I shouldn’t be in recall theoretically?
     
  14. ..........................
    Components in the LG electrolyte probably support the growth of dendrites which pierce the separator, regardless of which separator is used (in the LG batteries for the Kona or Bolt). Perhaps the SK Innovation batteries use different electrolyte components (e.g. in the Kia Niro EV).
     
  15. Dendrite growth is a known, common problem with Li-Ion batteries. They are the "Achilles Tendon' of this design/chemistry. This problem is not unique to LG Chem batteries. Some electrolytes likely perform better than others, but no one yet published a list of winners and loosers. This is still grey science. The problem is that there are too many variables, like driving style, charging habits, climate etc....
     
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  16. Here is the image captured from the battery of my 2021 Kona.
    HV Batery label-old.png
    My car was not on the battery recall list, regardless it is sitting in the dealer's lot (with a new battery) since October 23.
     
  17. ..........................
    Thanks. Is that photo the original battery label in your 2021 Kona, or a photo of the "new" battery label? You may have explained this in a different thread, but would you remind us why your 2021 Kona is sitting in the dealer's lot? If a new battery was installed after you bought your 2021 Kona, why was the original 2021 battery replaced?
     
  18. Finally here is the answer from Hyundai. They will replace all Kona HV batteries in the US and in Canada.

    https://www.greencarreports.com/news/1131385_hyundai-kona-electric-battery-packs-most-expensive-ev-recall

    So it looks that I will get a second new battery? How about a new set of one time use bolts? :(:(:(
    It like waiting for my Covid 19 shots.
     
  19. The photo is from the 'old' (original) battery. I was promised I will get one from the new battery - already installed - when they get the darn bolts to secure it properly to the car. Still waiting for four (4) South Korean 'one time use' bolts. According to Hyundai car is unsafe to drive with the original bolts reused.

    I don't want to bore you with the details. It is all documented above somewhere on this thread.
     
    Last edited: Feb 24, 2021
  20. Recoil45

    Recoil45 Active Member

    You can design the best cell separator in the world and poor BMS/charger algorithms can still burst the pack into fire in short order.


    Sent from my iPhone using Tapatalk
     
  21. Telek

    Telek New Member

    Yes, and I do not believe that either GM nor Hyundai had a bad BMS. It's just LG trying not to be financially on the hook.
     
  22. FloridaSun

    FloridaSun Well-Known Member

    No doubt about that.. Would actually be interesting if the details of what LG is talking about would be released.. It's not like the Kona is one of the faster charging cars.. The charging curve seems very conservative to me.. Let's not forget that some Teslas charge more than 3 times as fast..
     

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