Batteriapan
Member
- Joined
- Feb 20, 2017
- Messages
- 35
Hi all,
I'd love some general feedback on my project.
I'm working on a 7s20p. Arather small solution I hope to be able toscale up two or three times over as I get my hands on more cells, i.e. upgrade to7s40p and then to7s60p.I wish to do this without having to replace any existing wires etc.
The busbars/wireson my 20p-packsare made from double folded andtwinned 1,5mm diameter copper wire enforced with solder(so about 7mm^2, or 9-8 AWG). That shouldhandle40 amps, or1kW@24v. Planning for a 600W inverter and no more than 1kW PV-panels,I feel thatshould be OK.
Does this seem to add up? Is there perhaps something I'm not considering?
I'm now looking at connector terminals to pair up the packs and hooking themup with aBMS. How does these look to you?
http://www.ebay.com/itm/Crimp-or-So...inals-Cable-Bolt-Hole-All-Sizes-/262287387962
I was considering the 10mm^2 wire/5mm holes variant. Is there som better solution you would recommend me?
Here's a picture of the negative pole onone of my packs, taken prior toenforcing the busbar with solder.
Due to receiving nickel covered steel plate rather than pure nickel I ended up with identical setup on both poles of the pack, i.e. copper busbar andfuses on both sides. The fuse wireis good for 6,6 amps and burns up at about twice that current. I feel confident it should not be very lossy at all given the power drained by a600W inverter.
Thanks for reading all the way here
I'd love some general feedback on my project.
I'm working on a 7s20p. Arather small solution I hope to be able toscale up two or three times over as I get my hands on more cells, i.e. upgrade to7s40p and then to7s60p.I wish to do this without having to replace any existing wires etc.
The busbars/wireson my 20p-packsare made from double folded andtwinned 1,5mm diameter copper wire enforced with solder(so about 7mm^2, or 9-8 AWG). That shouldhandle40 amps, or1kW@24v. Planning for a 600W inverter and no more than 1kW PV-panels,I feel thatshould be OK.
Does this seem to add up? Is there perhaps something I'm not considering?
I'm now looking at connector terminals to pair up the packs and hooking themup with aBMS. How does these look to you?
http://www.ebay.com/itm/Crimp-or-So...inals-Cable-Bolt-Hole-All-Sizes-/262287387962
I was considering the 10mm^2 wire/5mm holes variant. Is there som better solution you would recommend me?
Here's a picture of the negative pole onone of my packs, taken prior toenforcing the busbar with solder.
Due to receiving nickel covered steel plate rather than pure nickel I ended up with identical setup on both poles of the pack, i.e. copper busbar andfuses on both sides. The fuse wireis good for 6,6 amps and burns up at about twice that current. I feel confident it should not be very lossy at all given the power drained by a600W inverter.
Thanks for reading all the way here