Power in Flux
Likes Likes:  1
Results 1 to 10 of 10

Thread: Quiq charger fault?

              
   
   
  1. #1
    Member
    Join Date
    Nov 2012
    Posts
    40
    Post Thanks / Like

    Quiq charger fault?

    Hi

    I have a Quiq HF/PFC 72V charger 912-7200 and it been behaving strange for a while.

    I bought it used from a member on ES and I think it was reprogrammed by Frodus some years ago.

    I use algorithm #123 which should have end voltage 89.1V, when I bought it it ended at 90.3 V which is better for my build ( 11 Leaf modules) .

    But now I see that end voltage creep up and now end voltage is about 90.55V. I also see often that during charge ammeter LED's on the side goes up and down fast several times and I see that on my ammeter too. I looks like charger tries to increase amperes, but go down again. Charging amps goes fast up and down and as example today - I returned from a trip where pack SOC is 50% , charger starts to charge at 11,6 A, but now few minutes later it charges at 1.2 A when pack voltage is still low ( 85,6V).

    I checked all contacts between the charger and my battery, I use Anderson Power pole for connectors.

    I use charger in same manner as before. On charging cable - green wire is disconnected, red wire connected to my battery's plus, and white and black wire is connected together to battery minus. Temperature sensor on the cable lug i received was cut of.


    CGR-912-7200-4.jpg

    Can it be that I use charger in wrong way and I should connect temperature sensor back? I tried it once but charger didn't started the

  2. #2
    Empulse R #24 frodus's Avatar
    Join Date
    Aug 2010
    Location
    Portland, OR
    Posts
    2,651
    Post Thanks / Like

    My Social Networking

    Follow frodus On Twitter
    There can be a little difference between 89.1V when measured by the DeltaQ itself. It might be slightly higher at the battery if your multimeter is not calibrated.

    The lithium profile, when you keep it plugged in, wakes up and tries to top off the batteries. It's a bit like a maintenance charge. It goes up, charges a tad, then comes down because you're at the finish voltage.

    The temperature sensor is not used with Lithium, it is removed and the white connects to black to enable and disable the charger. You can use that for with a BMS to stop charging when a cell hits high voltage cutoff first.

    Make sure your white wire is solidly connected to the B- terminal of the battery, and that there is no contactor between the charger and battery.
    Travis

  3. #3
    Member
    Join Date
    Nov 2012
    Posts
    40
    Post Thanks / Like
    Hi Frodus, thank you for your answer.

    I start to think there is something wrong with my charger.

    Last time when it jumped the way i described as soon i tapped lightly on charger housing with a rubber hammer charging amperage go higher, as soon it goes down again after next tap ig go up again until it stayed there. For me it sounds like some component at PCB are not very well connected or start to loose connection. Today when i charging again, there was no no jumping at all. It still overcharge according to chosen program.

  4. #4
    Empulse R #24 frodus's Avatar
    Join Date
    Aug 2010
    Location
    Portland, OR
    Posts
    2,651
    Post Thanks / Like

    My Social Networking

    Follow frodus On Twitter
    Maybe take the cover off and make sure everything inside is seated correctly, especially the voltage leads.
    Travis

  5. #5
    Senior Member
    Join Date
    Aug 2013
    Location
    Ephraim, UT
    Posts
    240
    Post Thanks / Like
    I also use a 72v Quiq with 11 Leaf modules. I use a different alg to charge to 91.188v (nominal). I haven't noticed voltage creep, but I have always had a slight (and variable) difference between the nominal setpoint (91.188), what I see on the CycleAnalyst, and what I see with a calibrated multimeter. When you think about it, 0.01v on a 100v scale is 0.01% error. Getting anywhere near that precise requires really expensive equipment- so unless you're using a $200 multimeter to take measurements, I wouldn't worry about it.

  6. #6
    Senior Member Nicman's Avatar
    Join Date
    May 2015
    Location
    Jackonsville, FL
    Posts
    115
    Post Thanks / Like
    Quote Originally Posted by nedfunnell View Post
    I also use a 72v Quiq with 11 Leaf modules. I use a different alg to charge to 91.188v (nominal). I haven't noticed voltage creep, but I have always had a slight (and variable) difference between the nominal setpoint (91.188), what I see on the CycleAnalyst, and what I see with a calibrated multimeter. When you think about it, 0.01v on a 100v scale is 0.01% error. Getting anywhere near that precise requires really expensive equipment- so unless you're using a $200 multimeter to take measurements, I wouldn't worry about it.
    Ned,

    I'm using a Delta q with 11 Nissan leaf modules but only get 89.8v.

    I'm not sure how to find out what alg I have, but more importantly I'd like to be able.to charge up to 91.188v like yours. I'd like that couple extra top end volts to see how much range it would squeeze out.

    I've seen the power lead used to change the algorithm but am not sure how to check each algorithm or see if I have the 91.188v already programmed on the charger.

    Thanks!

    Nic

    Sent from my SM-G955U using Tapatalk

  7. #7
    Senior Member
    Join Date
    Aug 2013
    Location
    Ephraim, UT
    Posts
    240
    Post Thanks / Like
    Quote Originally Posted by Nicman View Post
    Ned,

    I'm using a Delta q with 11 Nissan leaf modules but only get 89.8v.

    I'm not sure how to find out what alg I have, but more importantly I'd like to be able.to charge up to 91.188v like yours. I'd like that couple extra top end volts to see how much range it would squeeze out.

    I've seen the power lead used to change the algorithm but am not sure how to check each algorithm or see if I have the 91.188v already programmed on the charger.

    Thanks!

    Nic

    Sent from my SM-G955U using Tapatalk
    Hmm- I think that to check your algorithm, you disconnect the battery with the AC power off, then plug in the AC, and it will flash LEDs at you. It's difficult to read, actually- it'll flash X times quickly (e.g. 2 flashes = first digit 2), then pause and more flashes for the next digit, etc. IIRC my algorithm was 164. Let me see if I can find the instructions I used. I do think that changing the algorithm does involve connecting the battery positive terminal for a moment to increment to the next available algorithm. You might not have the one I have, frodus can program it for you if not.

    Edit: here is the video: https://youtu.be/FtxZoUmn6l8

  8. #8
    Empulse R #24 frodus's Avatar
    Join Date
    Aug 2010
    Location
    Portland, OR
    Posts
    2,651
    Post Thanks / Like

    My Social Networking

    Follow frodus On Twitter
    Quote Originally Posted by Nicman View Post
    Ned,

    I'm using a Delta q with 11 Nissan leaf modules but only get 89.8v.

    I'm not sure how to find out what alg I have, but more importantly I'd like to be able.to charge up to 91.188v like yours. I'd like that couple extra top end volts to see how much range it would squeeze out.

    I've seen the power lead used to change the algorithm but am not sure how to check each algorithm or see if I have the 91.188v already programmed on the charger.

    Thanks!

    Nic

    Sent from my SM-G955U using Tapatalk
    I forget, did you have yours programmed by me? I'm one of the few places that has lithium algorithms.

    If not, then there's no knowing what algorithms you have in there. I'd suggest you look in the manual for how to get the current algorithm to display.
    I have the manual and datasheet on my site (which is closed, but I left things on there for informational purposes):
    https://www.emf-power.com/product/de...ttery-charger/


    If you did get it programmed by me, Ned is correct, that #164 would give you 91.188V. Sounds like you're maybe on #123

    The algorithms are as follows:
    (note, that the same algorithms are used for 48V, 72V and 96V chargers)
    Alg ID: (48V model, charge cutoff, 72V model, charge cutoff, 96V model, charge cutoff)
    #67: (48V 49.2V, 72V 73.8V, 96V 98.4V)
    #128: (48V 54.7V, 72V 82.044V, 96V 109.392V)
    #211: (48V 55.44V, 72V 83.16V, 96V 110.88V)
    #163: (48V 57V, 72V 85.5V, 96V 114V)
    #53: (48V 58.392V, 72V 87.588V, 96V 116.784V)
    #123: (48V 59.88V, 72V 89.1V, 96V 119.76V)
    #164: (48V 60.792,72V 91.188V, 96V 121.584V)
    #135: (48V 62.256, 72V 93.384V, 96V 124.512V)
    #177: (48V 65.688V, 72V 98.532V, 96V 131.376V)
    * = default algorithm when I return to someone

    If yours was programmed by me, and it's set to #164, then you would need to measure voltage at the charger connector. There's voltage drop along the cables, so keep them as short as possible between charger and battery. If you're measuring at the battery, and your cables are 10' long and go through several connectors and different connections, then each connection is a voltage drop, and the cable has a voltage drop along it.
    Last edited by frodus; 07 March 2019 at 1010.
    Travis

  9. Likes Nicman liked this post
  10. #9
    Senior Member Nicman's Avatar
    Join Date
    May 2015
    Location
    Jackonsville, FL
    Posts
    115
    Post Thanks / Like
    Quote Originally Posted by frodus View Post
    I forget, did you have yours programmed by me? I'm one of the few places that has lithium algorithms.

    If not, then there's no knowing what algorithms you have in there. I'd suggest you look in the manual for how to get the current algorithm to display.
    I have the manual and datasheet on my site (which is closed, but I left things on there for informational purposes):
    https://www.emf-power.com/product/de...ttery-charger/


    If you did get it programmed by me, Ned is correct, that #164 would give you 91.188V. Sounds like you're maybe on #123

    The algorithms are as follows:
    (note, that the same algorithms are used for 48V, 72V and 96V chargers)
    Alg ID: (48V model, charge cutoff, 72V model, charge cutoff, 96V model, charge cutoff)
    #67: (48V 49.2V, 72V 73.8V, 96V 98.4V)
    #128: (48V 54.7V, 72V 82.044V, 96V 109.392V)
    #211: (48V 55.44V, 72V 83.16V, 96V 110.88V)
    #163: (48V 57V, 72V 85.5V, 96V 114V)
    #53: (48V 58.392V, 72V 87.588V, 96V 116.784V)
    #123: (48V 59.88V, 72V 89.1V, 96V 119.76V)
    #164: (48V 60.792,72V 91.188V, 96V 121.584V)
    #135: (48V 62.256, 72V 93.384V, 96V 124.512V)
    #177: (48V 65.688V, 72V 98.532V, 96V 131.376V)
    * = default algorithm when I return to someone

    If yours was programmed by me, and it's set to #164, then you would need to measure voltage at the charger connector. There's voltage drop along the cables, so keep them as short as possible between charger and battery. If you're measuring at the battery, and your cables are 10' long and go through several connectors and different connections, then each connection is a voltage drop, and the cable has a voltage drop along it.
    Just realized the last post never went through!

    No, you didn't program it for me.
    I have a spare that I'll be trying to repair and see if I can change the algorithm when I figure out why it isn't turning on.




    Sent from my SM-G955U using Tapatalk

  11. #10
    Empulse R #24 frodus's Avatar
    Join Date
    Aug 2010
    Location
    Portland, OR
    Posts
    2,651
    Post Thanks / Like

    My Social Networking

    Follow frodus On Twitter
    If you didn't buy from me, or someone who has, it is very likely that it does NOT have lithium profiles on it. They're specially made for lithium.

    See what you have on there, but I bet it's the default lead acid load.
    Travis

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •