TheBeastie
1 MW
Quick update on my nib pack.
I had one cell fully disconnect in 4P formation from its 3 friends.
This P was one of the nickle strips that was direct nickel on terminal attachment with nib on top (positive side).
The otherside (negative side) of this P4 setup was the thin copper foil and they were all connecting fine..
It was the second middle cell that disconnected and the nib on top was perfectly on top, it seems like the nickel strip just bent a bit maybe from a big bump and there just wasn't enough pull to keep it connected to the battery, or the whole battery pack shifted inside the plastic battery ebike case which to make matters more difficult is inconsistently shaped/molded on the inside.
So there you go, besides nickel being in theory the best metal due to low electrical resistance and high resistance to corrosion it has arguably been the first to failure due to its stiffness in my pack, but this is still just a guessing conclusion.
I think if you build carefully any of these metals and methods will work.
I have gone back to the more original design and placed a nib directly on the cell contact first and then a nib on top (nickel strip in between) . Will see how it goes over time.
Maybe this can be fixed if I can find even thinner nickel or some kind of super thin nickle wire braid type might be a good way to go.
Just trying to find what the options that are out there that I might chuck on a P to see how it goes,, nickel or silver plated copper braid would be something cool to try...
http://www.coonerwire.com/braided-wire/
I had one cell fully disconnect in 4P formation from its 3 friends.
This P was one of the nickle strips that was direct nickel on terminal attachment with nib on top (positive side).
The otherside (negative side) of this P4 setup was the thin copper foil and they were all connecting fine..
It was the second middle cell that disconnected and the nib on top was perfectly on top, it seems like the nickel strip just bent a bit maybe from a big bump and there just wasn't enough pull to keep it connected to the battery, or the whole battery pack shifted inside the plastic battery ebike case which to make matters more difficult is inconsistently shaped/molded on the inside.
So there you go, besides nickel being in theory the best metal due to low electrical resistance and high resistance to corrosion it has arguably been the first to failure due to its stiffness in my pack, but this is still just a guessing conclusion.
I think if you build carefully any of these metals and methods will work.
I have gone back to the more original design and placed a nib directly on the cell contact first and then a nib on top (nickel strip in between) . Will see how it goes over time.
Maybe this can be fixed if I can find even thinner nickel or some kind of super thin nickle wire braid type might be a good way to go.
Just trying to find what the options that are out there that I might chuck on a P to see how it goes,, nickel or silver plated copper braid would be something cool to try...
http://www.coonerwire.com/braided-wire/