Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
The Outhouse Powerwall
#11
Hi mate looking good what part of the world are you in cheers .
Reply
#12
Thanks! I'm in New Jersey in the US.

Finished the whole thing last weekend so now it's all the wiring inside!



Below is my rack design using 1/2" EMT conduit. It's simple and allows adequate airflow while being cost effective! It really adds up every time I go to home depot! The bill of materials so far for this shed is a little over $200 even with using recycled stuff.

There's 6 slots allowing a max of 20kwh storage. I'm sure I can fit two more rows to get to 26kwh but with my current usage it's probably not necessary.

 

Walde and Korishan like this post
Reply
#13
Germany we have dixi toilet

not Dixi Powerwall Cool

Charly144, Ibiza, not2bme like this post
Reply
#14
Hehe for a while I did look around for one! But in the end I think building it was probably better! It's going to be the most insulated outhouse warmed by batteries! Big Grin
Reply
#15
Small update, I've been using this chinese BMS for a couple months now and although my packs seem to stay together fine without any BMS. Well this isn't more of a BMS than just an active balancer. So for the few months I had it working, even though I just knew it 'worked',  I wanted to be able to log the data. It has a serial display board and I contacted the seller on aliexpress and she was kind enough to send enough details about the display for me to work with. It uses a serial TTL and I finally had the chance a couple nights ago to learn enough python to cobble together a script that I could run through telegraf and send the data to influxdb and display through grafana.

So for the first time, I can finally see it in action. I first put a cell that was over voltage by .2V, then another under .2V. In both cases it balanced it within 1-2 hours.



I doubt it can balance fast if the packs were way out of balance, which means one cell isn't too healthy. What I really needed it to do was warn me if any cell went over or under voltage. Now I can monitor each cell group individually.
Reply
#16
Curious about the BMS - could you pls post a link to them?
Ibiza likes this post
Running off solar, DIY & electronics fan :-)
Reply
#17
(08-11-2018, 08:56 PM)not2bme Wrote: What I really needed it to do was warn me if any cell went over or under voltage. Now I can monitor each cell group individually.

Grafana has alerts, it can alert you by mail, telegram and other systems if you have overvoltage or undervoltage on any cell.

Regards

Reply
#18
(08-12-2018, 06:25 AM)jesusangel Wrote: Grafana has alerts, it can alert you by mail, telegram and other systems if you have overvoltage or undervoltage on any cell.

Regards

Thank you I will try that! Will it work even if the dashboard isn't running? I sometimes don't have the browser open on it.

Redpacket I bought it off this link. I got the 16S version but only using the first board. 
https://www.aliexpress.com/item/4-24-ser...88046.html
Redpacket likes this post
Reply
#19
(08-12-2018, 11:22 AM)not2bme Wrote: Thank you I will try that! Will it work even if the dashboard isn't running? I sometimes don't have the browser open on it.

Yes, for sure on Raspberry Pi and Linux system I've tried, I supose when you installs grafana on any system it configures some process to evaluate alerts, you don't have to be navigating the web, of course the PC or device in wich grafana is installed must be ON and receiving data, it also alerts you is no data is received for the evaluation period.

Regards
Reply
#20
Interesting BMS.

Can you tell me the numbers on these two ICs? Curious as to what brains they are using for the logic

Proceed with caution. Knowledge is Power! Literally! Cool 
Knowledge is Power; Absolute Knowledge is Absolutely Shocking!
Certified 18650 Cell Reclamation Technician

Please come join in general chit-chat and randomness at Discord Chat (channels: general, 3d-printing, linux&coding, 18650, humor, ...)
(this chat is not directly affiliated with SecondLifeStorage; VALID email req'd)
Reply


Who read this thread?
100 User(s) read this thread:
hbpowerwall, AZ_Tekkie, daromer, Sean, mike, station240, Joaquinsfy, NiVa, owitte, opus40, VdVoort4, Majorphill, Elwood, ruby2, Korishan, A + A, PAF, Franky Beuselinck, Wattsup, eeesOap, Frnandu Martiński, Mike C, jdeadman, charlie246, wim, wimpie007, ericg, Brian Drury, The-J-Man, civitou, rebelrider.mike, watts-on, Dan Lim, jesusangel, Hanssing, Fredd, HyTech, IronSky, Mark Daniel Olsen, kot, Stefaan De Ridder, Chiptosser, BlueSwordM, Johnny Stauersbøl, Dennis Van Hoek, KaminoReal, Shade, KtB, Daveyboy, al4sound, Seedser, Mazlem, ivnz, Geek, SWEwall, Bigfillly, Jon, jamesk9, mr_hypno, floydR, AlexCPU, Learjet, morrisok, Grumplestiltskin, SemaJG, Lucian Macota, Joey T-Bone Smith, ChrisD5710, Han Mohr, ap103, Jason.T.Keenan, cristof, Oderus420, Oz18650, accoelho, neurocis, rev0, Barnesy, how about that, okent, not2bme, paz45, dmallia, Everythings-stuck-together, CarelHassink, IAMJAMESMANNION, Dave Adams, Pavel Razzorenov, Spkerking, Filip, karmi27, modido, Stramon, DropB3ar, jestronix, Ben Hooker, heynow999, bigblue, echo, Solexx X

Forum Jump:


Users browsing this thread: 1 Guest(s)