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Cell Balancing post Recall 196..

Discussion in 'Hyundai Kona Electric' started by FloridaSun, Nov 16, 2020.

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  1. Nov 18, 2020 #21
    electriceddy

    electriceddy Moderator Staff Member

    Nanaimo BC, 2021 Kona Ultimate Built Sept 2020
    I would assume the CMU has a connection to each 3P cell group (98 connections total)
    Curious just how much of an imbalance between the individual cells in that group would trigger an error code. If one cell were completely dead, the other 2 could pick up the slack even with a little help from adjacent healthy groups. A condition over time that would be more distinguishable, but in the short term may be overlooked. :oops:
     
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  2. Nov 19, 2020 #22
    mikeselectricstuff

    mikeselectricstuff Active Member

    100mV I think - don't recall where this figure came from - I think it was a description of the BMS changes someone got from Korea
     
  3. Nov 19, 2020 #23
    KiwiME

    KiwiME Well-Known Member

    New Zealand '2019' EU, heat pump, pink coolant
    Yes, that wiring is indicated in the docs, see blurry image below. The 3 cells in a parallel group have the same voltage of course but certainly one slacker would only have partial influence on the group balance voltage. Since they are wired in series, I don't see that adjacent groups could have any influence on each other in regards to balancing.
    I think the value of 100mV was from the pass/fail battery test required before applying Campaign 960, the earlier BMS update.

    battery control schematic.png
     
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  4. Nov 23, 2020 #24
    FloridaSun

    FloridaSun Well-Known Member

    Lakeland, Florida
    Charged on a power shared Chargepoint station today.. As the other port was in use, the power level was only 3.15 kw. I passed 82% and no cell balancing happened.. Charged to 84% before I disconnected.
     
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