Hi,
i think about making a flexible portable battery so it will be less painful to carry on my back (better fit), and less subject to damage if i fell :
16s4p made of 64 x 28650 cells of LiFePO4, approx 5kg, 420 mm height, 260 mm width, 26 mm thick (like a very big laptop) to fit in a backpack.
Instead of the classical way (nickel strip + PVC wrap) which makes the battery rigid :
- interconnect the cells with 26 mm long AWG12 silicone copper soldered on both ends on the minimal length of nickel strip so that i could easily spotweld them.
- protect the contact with kapton as usual
- wire the BMS as usual
- pour flexible silicone in between the cells (maybe entirely fill the gap). Expected both mechanical and thermal gains.
- slide it in a kevlar aramid sleeve to add somme protection (although it would be protected by the backpack)
Downside is it would definitely add weight (up to 10%, depends on how much silicon)
do you think that would work and have expected benefits ?
thank you,
Arnaud
i think about making a flexible portable battery so it will be less painful to carry on my back (better fit), and less subject to damage if i fell :
16s4p made of 64 x 28650 cells of LiFePO4, approx 5kg, 420 mm height, 260 mm width, 26 mm thick (like a very big laptop) to fit in a backpack.
Instead of the classical way (nickel strip + PVC wrap) which makes the battery rigid :
- interconnect the cells with 26 mm long AWG12 silicone copper soldered on both ends on the minimal length of nickel strip so that i could easily spotweld them.
- protect the contact with kapton as usual
- wire the BMS as usual
- pour flexible silicone in between the cells (maybe entirely fill the gap). Expected both mechanical and thermal gains.
- slide it in a kevlar aramid sleeve to add somme protection (although it would be protected by the backpack)
Downside is it would definitely add weight (up to 10%, depends on how much silicon)
do you think that would work and have expected benefits ?
thank you,
Arnaud
