On board charger temperature

Discussion in 'Hyundai Kona Electric' started by electriceddy, Feb 14, 2019.

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  1. Now that we have some deliveries , has anyone measured the temperature of the obc (on-board charger) either by digital infrared thermometer or (carefully) with the back of your hand?
    A report from New Zealand with an ambient of 25c measured over 55c even with the coolant flowing. Note further post where the charging rate was automatically reduced to 16A @70% during this event.

    http://www.mykonaev.com/forum/viewtopic.php?f=11&p=178#p175

    The voltage there is similar to N.A. (240V)only diff is at 50 hertz.
    I believe the obc on the Kona is 7.5kW @ 240V =31.25A ( not a lot current for causing that kind of temp)
    Does the Kona have a current selection in the settings to reduce this heat?
     
    mho likes this.
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  3. Reading this article on Kona battery thermal mgmt design;

    https://electricrevs.com/2018/12/20/exclusive-details-on-hyundais-new-battery-thermal-management-design/?fbclid=IwAR1FlwHcBpH4xte3ketRthNhzyyt5PmCCgw0Mq0iCaKqh2W_agNBtpcG0sA

    and assuming New Zealand has the same configuration as N.A. it appears the ambient temp may have been just below the threshold for the "chiller" mode as displayed by the chart supplied by Hyundai showing the different operating modes of the dynamically configurable thermal management loops.
    Hopefully the 3 way valve will open the loop to the obc/ power electonics/ motor loop (presumably including the inverter) and reduce the temp.(see hot condition flow chart)
    At least that's the theory.

    Sure wish my car would arrive, much rather be studying the manual, setting up obd diagnostics, and of course DRIVING :rolleyes:
     
    mho likes this.

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