Thank you for getting involved again! I saw this in another thread about cell compression and at the start of this thread. The testing you are doing is very interesting and helpful for all of us.The working rating of the springs I used is 218lb (which is at 60% compressed). I am using a stack in each corner and compressing them with the cells at 100% SOC to the max pressure I want to see which works out to just under 90 kg. Over 3 mm of travel I see the pressure vary from 14 PSI to 9 PSI. I tested my setup with a load cell.
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I think most of what you have been working on has been working on has been cell compression using belleville washers but what I am wondering about is belleville washers maintaining pressure on the terminals.
Was it you that said the 35inlbs worked out to around 700 lbs of weight pushing the busbar against the terminal? Thank you for that if it was. That is what I am trying to get sorted out. If we are looking for 700 lbs at each terminal the washers used for cell compression are too light for that and need a single washer capable of 700 which it looks like Bob B has got pretty close enough to.
Do you have any recommendations as far as how to apply the washer to the terminals. Im concerned about the washer digging into the softer bus bar material and being prevented from predictably flattening out. This is why I thought the fender washer first would be a good idea.