2012 Chevy Volt Battery:

330115 Views 663 Replies 95 Participants Last post by remy_martian, Dec 4, 2021

McRat

Discussion Starter · Feb 4, 2014

3

Paid $2000 + $150 shipping from a junkyard.
It is a work of art. I'll be sad to tear it apart for the cells, but that's life.
I'm getting 373 vdc for the battery, and 3.88 vdc per cell.

IF there are 288 cells. Already things aren't making sense. I count 72 modules about 1" thick.

Video: http://youtu.be/X8J-zfBnSEQ

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McRat

Discussion Starter · #2 · Feb 4, 2014

I'm an idiot. Ignore module count. There are 2 - 1kWh banks, and 7 - 2 kWh banks.

Yabert

· #3 · Feb 4, 2014 (Edited)

Awesome!!!!!! Only 2k$

I admit that I'm jealous.
Supposed to have 96 modules of 3 cells.
I will follow this thread with interest!

Lipo Louis

· #4 · Feb 4, 2014

It is a 96s3p pack, I have installed a BMS. I really like this pack. What I did, I used the casing of the original bms and made a board inside. Now I use the full 16kWh and the pack is still almost original. I also used the original bms connectors, very neat solution, I will post pictures soon.

McRat

Discussion Starter · #5 · Feb 4, 2014 (Edited)

Edit: DOH!! 288 is correct.

McRat

Discussion Starter · #6 · Feb 4, 2014

Lipo Louis said:
It is a 96s3p pack, I have installed a BMS. I really like this pack. What I did, I used the casing of the original bms and made a board inside. Now I use the full 16kWh and the pack is still almost original. I also used the original bms connectors, very neat solution, I will post pictures soon.

I'd love to see a picture of a single cell.

Without X-Ray vision, I'm seeing 6 cell blades on the 1kWh modules, and 12 cell blades on the 2kWh modules.

I'm puzzled.

McRat

Discussion Starter · #7 · Feb 4, 2014 (Edited)

I'm going to make up words for this battery:

Blade - One of the 1/2" thick plastic carriers for the cells.

Module - Either 1kWh or 2kWh with it's own BMS connector.

Block - Two or three Modules that have their own BMS computer on top.

rochesterricer

· #8 · Feb 4, 2014

So what is the total weight of the pack?

Two packs together at this price would give you a 32kwh pack for $4k. Not bad at all.

McRat

Discussion Starter · #9 · Feb 4, 2014

Advertised weight is 435lb for the entire assembly. I could not weigh it.

rochesterricer

· #10 · Feb 4, 2014

Was the shipping weight on the packing slip or invoice?

McRat

Discussion Starter · #11 · Feb 4, 2014

DOH!! Shipping weight with large pallet says 516lb on the bill of lading. So 435lb is probably right. It's a very heavy pallet.

McRat

Discussion Starter · #12 · Feb 4, 2014

Freight company weight.

Lipo Louis

· #13 · Feb 4, 2014

http://www.gaccmidwest.org/fileadmi...resentations/Matthe_GM_Battery_panel_Volt.pdf

Inside the pack I found 2 big relays and 3 smaller relays. New price about 200 USD each !

The wiring inside is too thin for my 1000A controller, I measured the Chevy volt on full acceleration at 330A peak.

McRat

Discussion Starter · #14 · Feb 4, 2014

Wow! Thanks for the link. So it's a small pouch cell. Must be thin.

rochesterricer

· #15 · Feb 4, 2014

McRat said:
DOH!! Shipping weight with large pallet says 516lb on the bill of lading. So 435lb is probably right. It's a very heavy pallet.

Thanks. So a 32kwh pack would be right around 900 pounds.

McRat

Discussion Starter · #16 · Feb 4, 2014

rochesterricer said:
Thanks. So a 32kwh pack would be right around 900 pounds.

Only if you were using the factory armor and watercooling. More than 1/2 the Volt battery assy is support hardware.

I need the weight on a single cell. I'm going to guess it's under 1 pound. So 288 lb max for the actual cells in a single battery. Could be a lot less even.

McRat

Discussion Starter · #17 · Feb 4, 2014

The Volt cells are very advanced chemistry, optimized for low weight at high discharge rate.

McRat

Discussion Starter · #18 · Feb 4, 2014

Here's some more data on it:

https://docs.google.com/file/d/0BwHvhEbCHHEleUp3TUMxOUwzdmM/edit

palmer_md

· #19 · Feb 5, 2014

McRat said:
The Volt cells are very advanced chemistry, optimized for low weight at high discharge rate.

Watch out, your starting to sound like a Chevy salesman!

McRat

Discussion Starter · #20 · Feb 5, 2014

palmer_md said:
Watch out, your starting to sound like a Chevy salesman!

Chevy bought the licensing for the new tech from Argonne? National Laboratory.

I tried to figure out what the best LiPo's for an EV were, and I think the GM pieces were the top dog in the field.

PS - My daughter is now driving our Volt. I'm sad.

I love that car.

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