Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
CrankyCoder Build
#1
Photo 
Ok.  So I had a little time to work on my build this weekend.  

I listed out all my battery capacities and using repackr.com spec'd my first small test pack.

[Image: IMG_2104.jpg]
(yes i know, there are some junk batteries in there)  

[Image: IMG_2113.jpg]



After figuring out which batteries I was going to use I cleaned them up, removed the sleeves and resleeved them.  I 3dprinted the top holder and here we go

[Image: IMG_2118.jpg]



So now I am up to the next part of figuring out the best way to wire up this pack.  Meaning the physical wiring.  Should I use a fuse wire to connect everything?  then use a big inline fuse between the pack and whatever I am powering?  

Thoughts?  
Big Grin
Reply
#2
For a power wall and if you have the stuff fuses on each cell just brings you some slight extra safety. The increased resistance due to those fuses is not a big deal on power walls for most of us.
And then you just keep 1 fuse per string or per the full pack depending on how you set it up.
Im using 1 ANL fuse per String and then 1 master.... To much? Smile Might be but i keep it safe and have no issues with that extra resistance due to the massive amount i have today.
(I should most likely updated my project page... But i have to wait some more due to still ongoing work.... Smile )
The Ultimate DIY Solar and build place
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcoming: 14S 18650~30kWh | Automatic trip breakers, and alot more
Reply
#3
(03-27-2017, 03:47 PM)daromer Wrote: For a power wall and if you have the stuff fuses on each cell just brings you some slight extra safety. The increased resistance due to those fuses is not a big deal on power walls for most of us.
And then you just keep 1 fuse per string or per the full pack depending on how you set it up.
Im using 1 ANL fuse per String and then 1 master.... To much? Smile  Might be but i keep it safe and have no issues with that extra resistance due to the massive amount i have today.
(I should most likely updated my project page... But i have to wait some more due to still ongoing work.... Smile )

any recommendations for my tiny pack?  Smile
Reply
#4
Depending on the max current i would use 35AWG tinned copper fuse wire for fusing and either using 1.5mm2 or 2.5mm2 that i twist for the bus bar.
CrankyCoder and mike like this post
The Ultimate DIY Solar and build place
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcoming: 14S 18650~30kWh | Automatic trip breakers, and alot more
Reply
#5
I'm using this for fuse wire, works great.
http://www.ebay.com/itm/371749516590
CrankyCoder likes this post
#18650
Reply
#6
(03-27-2017, 04:50 PM)daromer Wrote: Depending on the max current i would use 35AWG tinned copper fuse wire for fusing and either using 1.5mm2 or 2.5mm2 that i twist for the bus bar.

there is a radioshack down the street from me going out of business and dumping all their stuff.  I may grab a bunch of wire tonight and see what all I can come up with.

(03-27-2017, 04:52 PM)mike Wrote: I'm using this for fuse wire, works great.
http://www.ebay.com/itm/371749516590

what's the rough amperage before it burns up?
Reply
#7
(03-27-2017, 06:35 PM)CrankyCoder Wrote:
(03-27-2017, 04:52 PM)mike Wrote: I'm using this for fuse wire, works great.
http://www.ebay.com/itm/371749516590

what's the rough amperage before it burns up?

When soldered to bus bars, it has been tested around 18-20A I believe. If you take a piece of it and connect the negative/positive terminal of a single cell, it burns up instantly, which is what I'm going for. Short circuit protection. I think using 35AWG, you are going to see increased resistance which is undesirable in a battery pack of any kind.
#18650
Reply
#8
Sweet.  the further i get in to this more excited i get Smile
Reply
#9
Where do you get the sleeves? Great looking pack BTW!
Reply
#10
(03-28-2017, 12:33 AM)Alec_J Wrote: Where do you get the sleeves? Great looking pack BTW!


Picked up a long roll of the red on amazon. Just cut off about 71mm. Works great!

Thanks!
Reply


Who read this thread?
100 User(s) read this thread:
hbpowerwall, daromer, Minatugar, mike, goodnowm, NiVa, owitte, opus40, RudyLiPower, VdVoort4, froob956, Majorphill, riveracc1, coolfx, Herebus, CUDAcores89, BatteryDIY, DanielD, ruby2, JustJim, Korishan, P.Tasyo Powerwall, PAF, FERCSA, Prahe86, APD, pfromero, Batrium, Darmok, Project, Batteriapan, Tristan Timmer, memloc, oni, CrankyCoder, tchipperfield, Alec_J, chriskool59, charlie246, crud, Zagy, wim, hugo5464, wimpie007, coconut2k13, frnandu, melsom, typ49, VicRC, Tommy Ng, Radi, Ragulin83, fprumbau, Newidea, DrkHrs13, Taz D'vil, kot, mitchvr, Chiptosser, Piotr Dziel, pruesel, nokia6110nav, ivnz, Geek, electricJolt, Kenneth Bonanno, AlexCPU, Pierre, jens18, aef, cristof, paz45, Dave Adams, bogptrsn, PowerLio, Ginger Yang, Cody2o0, Ross Brown, Charly144, petarvarga, matthew, szzozo, Ezra Scholten, DK100, Doyle, ARLISS, Godzilla, Krokodino, dagabu, Wandrade, Hans Tuchel, Kevin Mason, camaya6, cowpen, RayGenWurm, rosco_argus, PaulDane, Gsanc165, japarral, rogechi

Forum Jump:


Users browsing this thread: 1 Guest(s)