Frank in Thailand
making mistakes so you don't have to...
Honestly, I simply do not know.
Fact: some of my Eve 152Ah cells start bloating / delaminating under low (C0.1) loads.
After they stopped production and switched to a new, bigger housing, the word came out that the old setup was prone to delaminating / bloating if not compressed....
Other fact: Specification sheet of Eve 280Ah advise 300kgf compression force.
And actually, it does make sense (to compress)!!
The CALB cells have plastic housing to give some strength.
Eve cells have nothing but thin aluminium walls..
Absolutely nothing to avoid delaminating except our atmosphere.
At the least sign of pressure increase, the walls will be bloating, even if none of the sheets within the cell are delaminating.
With nothing but compressed air to hold them together....
Delaminating is bound to happen.
And why wouldn't you compress??
We all know we bought half fabric, ment to be part of a bigger configuration.
I haven't seen any professional cell usage build in to - cars, - forklift, - busses, - golf carts without compressing them as a pack.
(Or have perfect fit case and slide the cells tight fit inside)
Not our DIY stuff, the production lines..
That type of professional.
*****
I have both, 152 and 280.
The 16* 280 aren't delaminating / bloating yet.
Or atleast not that I can see.
I didn't see any on the 152Ah either.
--- Till too late.??
I'm going to use multiplex to make compression sheets.
Updates in a few days to optimal Powerwall building.
Almost finished on the bus-bars.
They look good
Tomorrow time for the compression sheets.
Probably compression isn't needed.
Clamping fit or absolutely tight fit will be just fine also.
I don't have a casing for my 32*280 and 48*152Ah cells.
Standing free with no support at all...
Not a good setup and prone to delaminating/bloating or other problems.
Tight fit case with 1 mm moving space per 4 cells?
That OK.
The case should be able to withstand the 300kgf mentioned by Eve for the 280's.
I don't have much experience yet with 3D printing. I have one, except the first trial doggy.... Nothing yet
No idea how strong the 3D print is.
Can it withstand 300kgf expansion force???
As that is the other side of the coin..
Why would they need 300kgf?? --> they have that expansion force..
If it can, sure!!!
Yes, totally happy to use.
If they can't...
How much is 3D printed esthetics worth??
The $$$$ plus shipping for a new cell???
Fact: some of my Eve 152Ah cells start bloating / delaminating under low (C0.1) loads.
After they stopped production and switched to a new, bigger housing, the word came out that the old setup was prone to delaminating / bloating if not compressed....
Other fact: Specification sheet of Eve 280Ah advise 300kgf compression force.
And actually, it does make sense (to compress)!!
The CALB cells have plastic housing to give some strength.
Eve cells have nothing but thin aluminium walls..
Absolutely nothing to avoid delaminating except our atmosphere.
At the least sign of pressure increase, the walls will be bloating, even if none of the sheets within the cell are delaminating.
With nothing but compressed air to hold them together....
Delaminating is bound to happen.
And why wouldn't you compress??
We all know we bought half fabric, ment to be part of a bigger configuration.
I haven't seen any professional cell usage build in to - cars, - forklift, - busses, - golf carts without compressing them as a pack.
(Or have perfect fit case and slide the cells tight fit inside)
Not our DIY stuff, the production lines..
That type of professional.
*****
I have both, 152 and 280.
The 16* 280 aren't delaminating / bloating yet.
Or atleast not that I can see.
I didn't see any on the 152Ah either.
--- Till too late.
??I'm going to use multiplex to make compression sheets.
Updates in a few days to optimal Powerwall building.
Almost finished on the bus-bars.
They look good
Tomorrow time for the compression sheets.
Probably compression isn't needed.
Clamping fit or absolutely tight fit will be just fine also.
I don't have a casing for my 32*280 and 48*152Ah cells.
Standing free with no support at all...
Not a good setup and prone to delaminating/bloating or other problems.
Tight fit case with 1 mm moving space per 4 cells?
That OK.
The case should be able to withstand the 300kgf mentioned by Eve for the 280's.
I don't have much experience yet with 3D printing. I have one, except the first trial doggy.... Nothing yet
No idea how strong the 3D print is.
Can it withstand 300kgf expansion force???
As that is the other side of the coin..
Why would they need 300kgf?? --> they have that expansion force..
If it can, sure!!!
Yes, totally happy to use.
If they can't...
How much is 3D printed esthetics worth??
The $$$$ plus shipping for a new cell???
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