Actually, I am not planning to use a BMS. I will make VGA balance connectors and charge the battery using a balance charger. This way I can easily see if there is a problem at charge time. But I want to implement some protection.
My main priorities:
Safety while riding. I don’t want to add risks of blowing a fuse or blowing a BMS.
I don’t want the battery to go in flames.
Cell level fusing sounds like a great idea. But it has to be done correctly.
So, why fuses have to be on the positive side of cells? This was discussed in this thread, but I did not get the explanation. A fuse on the positive side can short as likely as on the negative side.
If I eliminate any possibility of shorts (thinking to use fiberglass fr4 plates between cells and fuses), can I put them on the negatives of cells? Is there any other electrical reason for them to be on the positive side?
More precisely, for easier access, I want to put them in alternating way: 1st P group - all fuses on plus side, 2nd P group - all fuses on minus side, 3rd P group - fuses on plus, etc.
Also thinking to use flat wire like this instead of busbar:
was just watching guy who made it from flattening copper tube from the hardware store with a press. cheapest probably. i used to get stuff from basiccopper.com but kinda expensive
Where can I get the fuse wire? I looked up 20a fuse wire on eBay, but all I got were regular 20a fuses. I’m copying the structure of this battery for a flexible battery, but it would be great if I could copy the cell level fusing too!