Thread Rating:
  • 8 Vote(s) - 4.5 Average
  • 1
  • 2
  • 3
  • 4
  • 5
There's a new wall in Germany!
(02-23-2019, 11:32 PM)at21 Wrote: Wow, thx owitte!
Im totally impressed. I live in Salzgitter and want you to ask, if it’s possible to have a look to your masterpiece.
Greetz auke

Sorry for the late reply, if you want to come over, just pm me Smile 

Have sun!
Oliver

(03-07-2019, 10:29 PM)Chimaera Wrote: Hello. I really liked Your work, You are good. I would like to ask you to reset the full description and used details and how to do it. I just have a crisis in Ukraine and it's getting more expensive, and saving electricity would have helped me a lot. if you can go to the email:********. Thank you in advance.

As Korishan stated, just send me a private message. Hope you understand that I don't have the time to fully document my work here, but if you have specific questions, I will do my best to help you (like most others here).

Have sun!
Oliver

Cells tested: 5536 (overall: 10854 Ah, average: 1960 mAh)
Cells in production: 2940 (overall: 6174 Ah, average: 2100 mAh)
Wall bank: 7s320p, 672 Ah, 16 kWh
Box bank: 7s100p, 210 Ah, 5 kWh
Project page
Live solar/powerwall values
Daily graph
Reply
How do you add new packs in parallel to your already installed packs. They need to be in the same state of charge or voltage that's clear. But how do you make it?
Reply
If owitte does not mind, I may be able to give You a few hints.

If Your new cell bank is within 100 mV it should be safe to just connect up.

If Your newbuilt 7s bank is fully charged, and Your existing bank is not, You may do this:

Find Yourself a standard 12V 40/45 W car headlight bulb. Connect the negative ends together and connect the bulb between the 2 positive connectors.

When the bulb does not glow any more, Your banks are equalised enough to be safely connected.

ChrisD
Reply
Often it is so easy. Thank you. I always asked myself how a resistor could help equalizing 2 Packs. Now I know. And you take a resistor with optical control, cool.
Reply
Again great wall.
I am going to do (not) exactly the same i think.
I will ?tilted? with 90 degrees, and use 100 cell a pack flat on the wall, 14 packs in one row for 48 volts.
So basically your wall is horizontal, i will use it vertical.

Really nice job neighbor!excellent.
So you invented this term: the "cartridge" type wall?
Or is this not a "cartridge" wall?

Thanks for your time and effort to post things around here, very much appreciated.
Still learning English. Learning Li ion and solar technology.

1400 cells in packs Exclamation above 2500mah and 90%soh.
~400 cells between 1800-2500 and above 90%soh(sell?)
600 cells between 2200 - 3000mah, 80-90%soh (sell?)
2600 waiting for testing.
approx: 500 cells not safe for use: dead, heaters, to high ir or sd

Time is our enemy, must work to, the sun is our friend, must relax to.
With best regards
Reply
(05-20-2019, 03:00 PM)Maniac_Powerwall Wrote: Often it is so easy. Thank you. I always asked myself how a resistor could help equalizing 2 Packs. Now I know. And you take a resistor with optical control, cool.

Hi,

ChrisD5710 is right, your new packs need to have approx. the same SOC/Voltage in order to connect them together. Otherwise you'll have a huge balancing current flowing from your new pack to the bank or vice versa, depending on which voltage is higher. I usually use a 20W halogen light spot to discharge a pack to the proper SOC. But it's not absolutely necessary to be within 100mV... you just have to make sure that the balancing current doesn't blow your fuses and you cells are capable of that higher charge/discharge current.

Have sun!
Oliver

(06-21-2019, 06:09 PM)100kwh-hunter Wrote: Again great wall.
I am going to do (not) exactly the same i think.
I will ?tilted? with 90 degrees, and use 100 cell a pack flat on the wall, 14 packs in one row for 48 volts.
So basically your wall is horizontal, i will use it vertical.

Really nice job neighbor!excellent.
So you invented this term: the "cartridge" type wall?
Or is this not a "cartridge" wall?

Thanks for your time and effort to post things around here, very much appreciated.

Hi and thanks for the compliment Smile . I know, if you have 48V in 14s, you wall needs double the height of mine Big Grin , so tilting it is a good idea.

I didn't know about the term "cartridge" wall, but that describes pretty much exactly what I have built. I only know of two things that I invented and everyone seems to use now: Resistor legs as fuse wires and copper tubes as bus bars...

Have sun!
Oliver

Cells tested: 5536 (overall: 10854 Ah, average: 1960 mAh)
Cells in production: 2940 (overall: 6174 Ah, average: 2100 mAh)
Wall bank: 7s320p, 672 Ah, 16 kWh
Box bank: 7s100p, 210 Ah, 5 kWh
Project page
Live solar/powerwall values
Daily graph
Reply


Who read this thread?
100 User(s) read this thread:
hbpowerwall, AZ_Tekkie, Chickey, daromer, Minatugar, Sean, mike, ote, goodnowm, BigBen, Chris, PaulKennett, Joaquinsfy, NERDVille, NiVa, Lux_Gamer, Andreas Kvernes, owitte, RudyLiPower, miwall, Loboosh, ken, dakoal, VdVoort4, Glubux, Majorphill, riveracc1, coolfx, Herebus, CUDAcores89, timholmesjr, BatteryDIY, Power 2 Spare, ruby2, JustJim, Korishan, Toddy76, A + A, PAF, FERCSA, FireFrog, Alexander, Franky Beuselinck, Batrium, Darmok, Wattsup, eeesOap, Batteriapan, Frnandu Martiński, egam, skyfridge, tchipperfield, Alec_J, Mike C, Droid126, eAnic, jdeadman, charlie246, dnik2, camils, crud, Zagy, 2146, wim, wimpie007, coconut2k13, MajStealth, ericg, Joe Farrugia, frnandu, melsom, josearaujo10, Brian Drury, typ49, HandyAndy, The-J-Man, Tommy Ng, Hellonasty, Christian, Radi, Robert Baumer, Charles Francis Speakman, Hayden Bennett, Jeremy Choy, 1958 greyhound, dnataemil, Abarth595, Tango47, kktuo, civitou, neilmc, Kaspars Krumins, Tobbe O Kompani, Off Grid Power wall, Tychipowerwall, Em Em Silverghost, rebelrider.mike, kaits31, Friman, fprumbau

Forum Jump:


Users browsing this thread: 1 Guest(s)