countermeasure wrote:I am interested in the clamping buss-bar. Are these parts from DowKokam? Or do you have to make your own clamping bars?
I want to build 1S3P, 25 Ah. Is there MSDS sheet available for the 25 Ah?
How do you solder to the battery tabs? Is it aluminum like A123 20Ah?
cassschr1 wrote:Can you show me a picture of a clamping bus barPLEASE How can I buy em, if I can't assemble the cells. Cass
The manufacturing of the clamping buss-bar pieces is up to you guys, they're relatively simple by design. Here's a great example from the folks at Plasma Boy Racing:
Obviously, they're handling a ton
more amperage, so the copper or aluminum bars don't need to be nearly as thick for these applications. There's a lot more photos of their setup here: http://photos.plasmaboyracing.com/LiPol-Module?page=1
Do you mean 12S3P? What total pack voltage and Ah are you shooting for? The positive tabs are aluminum, the negative tabs are nickel. They can be soldered directly to one another with a standard high-heat iron, if you don't want to do the assembly mechanically.
Whiplash wrote:I may have missed it, but do these cells need to be "clamped" for best performance, or is it not a concern??
Do you mean as far as tab assembly goes? Or are you talking about keeping the cell's walls under pressure? They will perform almost identically whether assembled with solder, or mechanically. Some LiPo cells perform marginally better if the cell stack is under slight
pressure, a simple wrap of heatshrink, or a similar binding wrap will do the trick.