BHAHAHAHA I JUST LOOKED AT YOUR PROJECT LOL.
curtis.perrin said:
How big of a deal is to split a bigger pack and reconfigure in parallel without rearranging the cells? Don't you need to worry about them being out of balanced?
Cheers,
Curtis
That is a VERY common module, that EV west began selling AFTER they began selling the cells i told you to buy. Easy to reconfigure. Used in OEM powerwalls.
LOL that they call them " SUPACELLS".. Bahahah. ( wonder why they sell them in "7s"? Cause they are from a powerwall, and are energy dense cells, not power cells.. Lol)...
I PROMISE YOU a Chevy Volt pack will WALK all OVER that .... Tromp it.. walk all over it.. eat it for breakfast... do 800A from 50Ah.. Lol @ 500A from 63Ah..... the density matters...
" 500A 'In bench testing we were able to hold over 500A of output for 2 minutes per cell, '
"Supacell" .. and th VOLT pack will be more expensive too. Certainly.; ( 3x to 5x)
Here is a reference ( page 3) to that LG chem system ( stacking powerwall modules) ,,,.... ( designed for reconfigure, but look at the tabs for laser marks)
https://www.lgchem.com/upload/file/product/LGChem_Catalog_Global_2018.pdf
Anyway, the module that is listed right before teh one you linked.. is the one that is filled with.. LGX P1 cells, the same in the FIRST GEN VOLT... but I recommend the SECOND GEN: For they are 100A more powerful per cell.
This (module) came from a Chrysler Pacifica... ( the EVWEST listing)...
Contin.
https://www.evwest.com/catalog/product_info.php?cPath=4&products_id=481&osCsid=8669d8b450cab90a536657006105ccfc
mxlemming said:
Those LG chem cells look lovely. I'm wondering if I can strap then to my bike now.
I have four or five friends who have those on ebikes. They are OK for 2-300A. I have one here tested. Those with them on the bike are very happy with them.;
john61ct said:
You won't find hardware for those connections off the shelf, maybe Anderson SB series?
Those EV packs look fantastic, but besides the high fire risk, will likely not be available reliably in the future
harder to integrate with third party or your custom management / monitoring / protection circuitry or temperature management systems
Also, maybe not as flexible in giving you the voltage range you want
yes you will. Easy off the shelf. Thomas and Betts or Panduit make. Flexibar. Ect. Off teh shelf.
EV packs have a much lower fire risk than you think.
I burned about 200 scraps today for the copper inside them. ( YAYA 40 lbs copper) They were puffed a little .. rejected and burned.
Even the brand new and full charge, they dont go up like a cobalt HK lipo. Hold a blowtorch on them and they still give good power. They do explode when you put them in the burn barrel though.. PFFFZZZwhooosh engulfed. Let them burn, wash the heavy metals out of them.. and scrap scrap. Pure copper sheets. Each cell holds about... 200 grams of copper inside. 2/3 of a cell is copper ( by weight).
Easy to install a " 3rd party bms".. its just wires. Connections.
I told you what is the most powerful OEM off the shelf you can buy. Trust me they are power dense, for their energy, density. That I have found. 3K$-5K$ will get you 14kWh..
OP: I can build you a 40s, 50Ah pack for 2000$$. New cell. 3600wH nominal, 144v, 800A capable. Peaks well over that.. ( 3 secon peas in teh 2000A + range) .
Water cooled will be another 400$.... 90 lbs, in two parts. ( 2X45lbs). BMS not included, just wired. You can spend what you want on the BMS.. 300$.. or 1300$... anywhere in between.
You wont find much more than a 1200w cell in practice. Especially without cooling like water or active, passive, air.
You might want to look into the Toshiba Scibs, or the Cmax cells, too. LTO maybe. They are near 1000w / cell.