plastic is not compressible, sikaflex is compressible allowing cell expansionOr just do what the rest of us do and stick a sheet of stiff plastic between them.
plastic is not compressible, sikaflex is compressible allowing cell expansionOr just do what the rest of us do and stick a sheet of stiff plastic between them.
Those of us that are compressing our cells are trying to avoid cell swelling lolplastic is not compressible, sikaflex is compressible allowing cell expansion
You can replicate a similar setup with a pile of old drywall and some angle/sheet steel. Would need to be a fair bit thicker though...and now for something completely different
If you can't prevent a fire - contain it and make maple syrup.
My small maple sugaring arch could handle the heat. Fully lined with full size firebrick with a triple wall stainless chimney that will handle at least the 3rd level of Hellfire.
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The 1/8th inch steel plate on top is used to heat the Maple Room (the sugar shed) in winter so we can use it as a sitting room.
During sugaring season there's an evaporator pan with an inch of roiling boiling sap in it.
It would make a hell of a fire safety battery box.
I wonder how many LiFePo4 cells would equal a cord of wood?
Why using spring in that case, constant pressure compression maybe? lolThose of us that are compressing our cells are trying to avoid cell swelling lol
There's a nuance here. If you use an insulating layer that compresses at about the force you want to maintain, then as the battery tries to swell, the foam will give only once your target pressure is reached and then exert more pressure until it's flattened between adjacent cells. I think that's what you want, right? And the corners and edges which don't swell as much will not be affected. I.e., the foam would exert the force you want in the areas of the surface where you need it until it's fully compressed (at which point the force would increase a lot more). A hard, non-compressible plastic would not conform to the surface, and would transfer whatever force you're placing on the pack to the points on contact on the surface. That force could be more or less than what you intend, depending upon (a) what state of charge you clamp them at, and (b) whether the pressure is from a spring-loaded rig. If you use a spring-loaded rig, then can't the cells move and put stress on the terminals as some have expressed concern over?Those of us that are compressing our cells are trying to avoid cell swelling lol
There is a whoole other thread discussing the various methods of compression and their merits. The best seems to be springs but I can't afford the space so I'm using poron foam.There's a nuance here. If you use an insulating layer that compresses at about the force you want to maintain, then as the battery tries to swell, the foam will give only once your target pressure is reached and then exert more pressure until it's flattened between adjacent cells. I think that's what you want, right? And the corners and edges which don't swell as much will not be affected. I.e., the foam would exert the force you want in the areas of the surface where you need it until it's fully compressed (at which point the force would increase a lot more). A hard, non-compressible plastic would not conform to the surface, and would transfer whatever force you're placing on the pack to the points on contact on the surface. That force could be more or less than what you intend, depending upon (a) what state of charge you clamp them at, and (b) whether the pressure is from a spring-loaded rig. If you use a spring-loaded rig, then can't the cells move and put stress on the terminals as some have expressed concern over?