Hybrid Cell Voltage

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by Ralvals, Jun 4, 2017.

  1. NeilPeart

    NeilPeart Hybrid & PiP Convert

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    Perhaps it could be an inverter failure? My wife's 2010 Prius III recently experienced something similar and that was the root cause - the dealer replaced the inverter, the fluid, etc at no cost under warranty. She runs perfectly now.
     
  2. Travis Decker

    Travis Decker Member

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    Isn't your car under warranty?

    Nexus 6P ?
     
  3. Prodigyplace

    Prodigyplace Senior Member

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    What is the Toyota warranty in Vladivostok? I am pretty sure it is different than the US.
     
  4. QuantumFireball

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    Ralvals' car is a used import from Japan - there is no warranty.
     
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  5. Prodigyplace

    Prodigyplace Senior Member

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    Thank you for that additional information. It was not mentioned in the initial post.
     
  6. jerrymildred

    jerrymildred Senior Member

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    So what ever happened? Did you get it fixed under warranty?

    I'm also curious how @Ralvals is coming along.
     
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  7. Ralvals

    Ralvals New Member

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    I am sorry for the delay.
    I solved the problem for low voltage.
    I replacement the bad cell.
    But i have now a new trouble - high voltage :)
    Did you Initialize the HV battery after replacement fuse?
     
    #47 Ralvals, Aug 4, 2017
    Last edited: Aug 4, 2017
  8. jerrymildred

    jerrymildred Senior Member

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    Oh no!
     
  9. Ralvals

    Ralvals New Member

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    Do you know anything about it ?
     
    #49 Ralvals, Aug 5, 2017
    Last edited: Aug 5, 2017
  10. jerrymildred

    jerrymildred Senior Member

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    I don't remember ever reading anything about that happening. As far as I know, there is still no way to grid charge a PiP, so I would guess you'd need to balance them manually, one at a time, but after all the cell phone fires, lately, I'm not likely to try that without knowing a lot more than I know now.

    I think @jeff652 once said he was thinking about something like that.
     
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  11. Raytheeagle

    Raytheeagle Senior Member

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    [QUOTE="jerrymildred, post: 2581606, member: 149132

    I think @jeff652 once said he was thinking about something like that.[/QUOTE]

    When I had him install the harness on our 2010 in February he said he was. But Lithium technology is trickier :(.
     
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  12. jerrymildred

    jerrymildred Senior Member

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    There's an understatement! :)
     
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  13. Raytheeagle

    Raytheeagle Senior Member

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    I try to keep it concise ;).
     
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  14. Simtronic

    Simtronic Member

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    Did you manage to fix your problem? I have replaced a cell in a lithium pack before and know how hard it can be to balance the cell voltages, SOC and temperature if under-charged I have discharged a single cell while in pack until accepted by the BMS but on a much smaller system. It would be quite dangerous to attempt that if you aren't sure what you are doing.
     
  15. Ralvals

    Ralvals New Member

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    Hello!
    I replaced the traction battery and my problem is gone.
    Please, give me more information.Did you discharge cell on the running car?
    I replaced 1 cell in the pack and got high voltage.
     
    #55 Ralvals, Nov 10, 2017
    Last edited: Nov 10, 2017
  16. Simtronic

    Simtronic Member

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    Yes with a headlamp bulb to bring down the voltage on that cell but that wasn't a Prius which is complicated by 6 cells stuck in one battery meaning the only way to balance those cells is to slowly overcharge and discharge until you get the capacity back in that 7.2v battery within the pack. The Nimh batteries are also quite temperature sensitive making balancing even harder. I am glad to hear you resolved your problems
     
  17. QuantumFireball

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    You replaced the whole traction battery? Did you find a used replacement, and was it expensive?
     
  18. Ralvals

    Ralvals New Member

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    I bought the whole battery for 1500$ with shipping.I found the used battery.
    Sorry, maybe I didn't understand you, I have the prius phv and he has 56 cells with voltage 3.7v each.
     
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  19. Simtronic

    Simtronic Member

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    I think maybe I misunderstood you, yes 56 cells nominal voltage maybe 3.7v but Toyota charge them to a maximum of 4.15v and should be much easier to balance. You can also Parallel the modules to assist. Sorry for late reply I've been very busy lately.
     
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