Notice To Unregistered Users: By visiting this forum, you are automatically agreeing to the terms and conditions set forth in our Safety Notice & User Agreement. All electrical work shall be completed by a qualified and licensed electrician. Admins, moderators, and members do not accept any liability for the information posted here. Please make sure to read the Safety Notice & User Agreement for the full disclosure. To remove this message, please register for an account.
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
See any of these?
#21
I am finding that the soft-pack cells of similar shape and size to these are becoming more and more prevalent. Many of the newer Dell packs have 6 cells, in pairs of 3 different sizes.

I am likely going to be building 14s packs, maybe with self-balancing capability, and this _should_ allow me to use cells of any size, using one cell type per pack.

Something like what you have done here would be perfect. All I need to do is work out how to fix my 3D printer...
Reply
#22
(03-29-2018, 07:04 PM)Grumplestiltskin Wrote: ... I am likely going to be building 14s packs, maybe with self-balancing capability,...

Hmmm... self-balancing ?  intrigued ...  Smile
Has to be explained, with drawings, videos and essays .... can we have some ?? please  Tongue
jdeadman likes this post
___________________________________
18x 300Wp solar off grid and 10x 180Wp solar tracker grid-tie
10KW 3phase hybrid inverter. 40Kwh 18650 storage (for now)
My setup: https://secondlifestorage.com/t-Instant-powerwall
Reply
#23
https://secondlifestorage.com/t-18650-equaliser

I call it self-balancing, but Brian calls it flying cell. Here in California "flying" has other meanings....

To elaborate a little, a 14s pack requires a minimum of 27 cells, with additional multiples of 13 or 14 or both, depending on the desired capacity of the flying cells.
Reply
#24
Ah, Brians Equaliser ... ok, already explained, so no need for a essay on that one.
Maybe a video on what "flying" means in California ?  Big Grin
___________________________________
18x 300Wp solar off grid and 10x 180Wp solar tracker grid-tie
10KW 3phase hybrid inverter. 40Kwh 18650 storage (for now)
My setup: https://secondlifestorage.com/t-Instant-powerwall
Reply
#25
No need for a video.... just flying HIGH.
Reply
#26
Strictly medical of course ...  Cool
___________________________________
18x 300Wp solar off grid and 10x 180Wp solar tracker grid-tie
10KW 3phase hybrid inverter. 40Kwh 18650 storage (for now)
My setup: https://secondlifestorage.com/t-Instant-powerwall
Reply
#27
Not any more.....
Reply
#28
Perhaps we can use the more technical name of TDM cell balancer (time domain multiplexed cell balancer). He ought to file a patent for it unless someone has beat him to it... I don't know if it's different enough from a switched capacitor balancer design to qualify.
Grumplestiltskin likes this post
Reply
#29
Anyway.... getting back to the original topic, someone mentioned a data sheet for these cells. While I cannot help in this case, I did come across a spreadsheet for Coslight cells.

While it has many cells listed, I have many that are not included, so I did a little analysis of the volume of each cell in the list vs the stated capacity, and came up with an average that I use to 'guesstimate' the capacity of the cells I come across.


.xlsx   COSLIGHT.xlsx (Size: 26.89 KB / Downloads: 0)
wim likes this post
Reply


Who read this thread?
100 User(s) read this thread:
hbpowerwall (03-29-2018, 10:16 PM), AZ_Tekkie (06-20-2018, 05:16 AM), daromer (02-28-2018, 07:46 PM), mike (03-30-2018, 12:17 AM), Majorphill (03-14-2018, 12:29 AM), Korishan (03-29-2018, 11:13 PM), A + A (03-20-2018, 06:04 PM), PAF (03-31-2018, 04:41 PM), FERCSA (03-01-2018, 08:00 PM), Mike C (03-13-2018, 02:37 AM), jdeadman (03-30-2018, 12:40 AM), 2146 (03-01-2018, 10:47 PM), wim (03-30-2018, 06:12 AM), MajStealth (03-10-2018, 11:31 PM), HandyAndy (03-13-2018, 01:34 AM), Charles Francis Speakman (03-10-2018, 01:30 PM), watts-on (03-30-2018, 09:23 AM), Stefaan De Ridder (03-26-2018, 09:56 AM), Chiptosser (03-15-2018, 10:43 AM), Shade (03-01-2018, 03:10 AM), al4sound (04-11-2018, 12:46 AM), paraskevas (03-26-2018, 07:35 AM), Mazlem (03-28-2018, 06:20 PM), Geek (04-01-2018, 03:37 AM), mr_hypno (03-27-2018, 04:18 PM), floydR (03-29-2018, 10:38 PM), grgdgreek (03-20-2018, 04:59 PM), DarkRaven (03-31-2018, 12:36 PM), Grumplestiltskin (03-29-2018, 10:39 PM), cristof (03-30-2018, 04:24 PM), rev0 (05-17-2018, 06:08 AM), ad8mustanggt (04-03-2018, 03:59 PM), CarelHassink (03-26-2018, 05:36 PM), AmDD (03-20-2018, 03:32 PM), yasko (03-13-2018, 10:25 AM), Solexx X (03-24-2018, 03:20 AM), rdh824 (03-13-2018, 07:41 PM), Charly144 (04-24-2018, 12:46 PM), BaronVonChickenPants (03-09-2018, 07:13 AM), thefixer06 (03-04-2018, 02:21 AM), acidice333 (03-15-2018, 10:53 PM), Jason Morris (03-29-2018, 08:55 PM), brwainer (03-29-2018, 11:35 PM), drchips (03-09-2018, 08:18 AM), HughF (04-05-2018, 12:27 PM), Roland Domke (03-09-2018, 09:30 AM), Interstar (03-15-2018, 01:16 PM), Farends (03-08-2018, 05:35 PM), rtgunner (03-08-2018, 05:37 AM), paulkok (03-21-2018, 05:34 PM), gutyex (03-14-2018, 04:39 PM), EGOksy (03-26-2018, 08:07 PM), gpn (03-30-2018, 03:58 AM), Chablis_m (03-26-2018, 09:19 AM), Headrc (03-29-2018, 07:10 PM), Tvixen (04-09-2018, 10:10 PM), alberta offgrid (03-09-2018, 05:11 AM), Cyric30 (03-05-2018, 11:50 PM), Riffraff (05-09-2018, 04:54 PM), kevin040474 (03-01-2018, 08:04 AM), rodagaster (04-05-2018, 10:17 AM), Dala (04-06-2018, 09:03 AM), DK100 (03-26-2018, 09:44 AM), Doyle (03-29-2018, 11:18 PM), Jaggerz (03-16-2018, 09:22 PM), Crimp Daddy (03-26-2018, 04:31 PM), John Southern (04-21-2018, 01:29 AM), fas83 (03-02-2018, 05:34 AM), SuperBrainAK (03-21-2018, 08:43 PM), Towelie (03-06-2018, 08:34 PM), jonyjoe505 (03-01-2018, 04:16 AM), Redpacket (03-01-2018, 11:37 AM), ricardo-reis (03-08-2018, 10:41 PM), Helmchen (03-05-2018, 07:46 AM), Amigaman (03-09-2018, 06:00 PM), sandman (03-13-2018, 10:44 PM), DarrenW (04-05-2018, 09:42 PM), completelycharged (03-15-2018, 11:54 AM), Osman Şener (04-01-2018, 02:31 PM), Ohsielos (03-18-2018, 07:10 PM), Bigdinner (04-29-2018, 09:31 PM), Ibiza (03-29-2018, 11:00 PM), Lenn (03-10-2018, 08:28 PM), Chubbsdad (03-10-2018, 03:40 PM), Matt Barrand (03-14-2018, 07:11 PM), Timbo TK (03-15-2018, 02:05 AM), RollingInJunk (03-30-2018, 03:59 PM), kjparker (03-19-2018, 02:57 AM), rumape10 (03-27-2018, 06:17 AM), Just starting (03-30-2018, 12:33 AM), kozi1982 (03-31-2018, 06:42 PM), David Henley (03-29-2018, 08:50 PM), Turtle Hermit (04-06-2018, 06:23 PM), LooseCard (03-31-2018, 10:43 PM), advancedservers (04-09-2018, 06:55 AM), mikoloxtra (05-03-2018, 10:50 AM), dualrated2 (05-13-2018, 02:01 AM), MasterRadix (06-01-2018, 08:53 AM), Ricky Latarche (06-14-2018, 03:46 PM), bpm5cm (07-02-2018, 12:34 AM)

Forum Jump:


Users browsing this thread: 1 Guest(s)