recharge HV of 2014 Prius V?

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by primuspaul, Oct 23, 2021.

  1. primuspaul

    primuspaul Member

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    I recall there was a procedure to recharge the Gen 1 HV battery pack (not individual cells) directly without needing to significantly disassemble the car. Only requirement was you needed 230VDC. Is there such a procedure for the 2014 V?
     
  2. bisco

    bisco cookie crumbler

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    unfortunately no. you need the special toyota charger or a grid charger.
     
  3. TMR-JWAP

    TMR-JWAP Senior Member

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    If you have access to a DC power supply that is capable of 210-230 volts and can be operated in a constant current mode (0.3 amps to 1.5 amps would be safe numbers for current) I think you could charge the battery successfully. It would essentially be a grid charger, by a different name. Hopefully you would also have a bit of electrical experience to also "understand" what you're hoping to do.
     
  4. primuspaul

    primuspaul Member

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    I have a Bio-Rad 3000Xi Computer Controlled Electrophoresis Power Supply. The question is: where is the + and - for the HV battery pack that is expecting the 210-230 volts of power. Power specs indicate it cannot supply more than 400W of power, so I doubt it can exceed 1.5A at 230V.
     
  5. vvillovv

    vvillovv Senior Member

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  6. primuspaul

    primuspaul Member

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    Just adding some juice to a low battery, NOT rebalancing the individual cells. I see the article mentions we are dealing with exposed HV terminals, but it doesn't say where the + and - is for the 200V HV pack.
     
  7. vvillovv

    vvillovv Senior Member

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    20) Install the black HV ground wire to the right most (passenger side) battery module 8mm bolt as shown. Note the diagonal orientation of the connector. This is intentional. Your wire harness may not have the red connector insulation, this is normal.

    When tightening the battery module terminal, DO NOT OVERTIGHTEN! These post can break if too much force is used. They should only be torqued to approx 4-5 ft lb

    21) Route the red HV positive wiring through the orange battery wire harness clips as shown.

    Install the red HV positive wire to the left most (driver side) battery module 8mm bolt as shown. Note the diagonal orientation of the connector. This is intentional. Your wire harness may not have the red connector insulation, this is normal.

    When tightening the battery module terminal, DO NOT OVER TIGHTEN! These post can break if too much force is used. They should only be torqued to approx 4-5 ft lb.

    Yes, the picture in #21 could be better, but the picture in #20 looks good to me.

    side point: not sure I was clear about the whole pack balancing procedure description. It's not the same process as the module based balancing.It is similar in a few ways, though.
    Not a big deal if I was understood or not, if all you want to do is add some watts to your pack..
    Wishing you Good Luck with your project.
     
    #7 vvillovv, Oct 24, 2021
    Last edited: Oct 24, 2021
  8. primuspaul

    primuspaul Member

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    This is to recharge a potentially discharged HV battery that is no longer able to start the car.

    From what I understand, the bolt on the left side of the pack, the one that has the minus on the cell's plastic cover, is the HV GND and the other side has a similar looking bolt with a plus sign and that's HV+:
    upload_2021-10-24_15-33-14.png

    I guess the way they're wired, at those terminals you get access to the entire pack that's expecting 200-230VDC of charging voltage at half an amp to 1.5A?

    Do you by any chance know if it's possible to reach those bolts without significant disassembly of the car?
     
  9. vvillovv

    vvillovv Senior Member

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    Not really, especially if concerned about safety.
    Others may have differing opinions on the safety factors.
     
  10. Tim Jones

    Tim Jones Senior Member

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    Better just get a new battery.
    newpriusbatteries.com
     
  11. vvillovv

    vvillovv Senior Member

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    A first time grid charge can be dangerous in far too many ways. Trying to cover all the first time possible issues is near impossible. For a beginner, to hookup a homemade grid charging scenario, can be a recipe for one of the many possible disasters that have been written about by both experienced and beginners in the past.
     
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