Fishpaper and cell level fusing, USE IT!

ESK8 Electronics
21

If you guys are interested I can post a little “how to” on cell fusing. I have a few methods that might work well for the home builder. You do need a spot welder to do it.

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Yes, definitely interested!

23

+1 please.

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I disagree. Lifepo4 is the safest chemistry available. I have never seen a lifepo4 fire. If you have a video at hand prove me wrong.

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25

You guys need to check out www.diypowerwalls.com for fusing techniques, material tests etc. We have some really indepth discussions about different options over there.

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Yes. Lifepo4 is the safest chemistry. It requires a extremely negligent care to cause a fire. The very few cases reported were because of a faulty bms or charger, not by the cells. I never Heard of a fire caused by the cells.

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Yes! I was going to ask you to do this yesterday. Would be much appreciated

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This should be good…Keep this thread bumped up to the top of the list. Here’s a thread that was pretty helpful. It’s got some good info throughout.

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I will be adding some photos and tips on battery construction with cell level fusing. It wont be all at once, I will edit the original post periodically over the next few days/weeks!

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30

Any more updates? Pretty please :grin:

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I second that! really want to understand the cell level fusing better. I don’t quite see how it works.

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32

I have a 10s4p cell fused pack if you’re interested :stuck_out_tongue:

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Wana show me the way? :stuck_out_tongue: I want to learn how to do it, and do it right.

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I can show you if @Jinra or @chaka dont

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I’m interested as well

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Also, you can spot weld fuse wire

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I do it differently than chaka since I soldered straight to cell, but basically you have a buss bar (brass for me) that lays on the side of the cells. The fuse gets soldered onto the buss bar connecting to the cell creating a parallel connection. If a cell outputs too much current, it’ll blow the fuse disconnecting it from the rest of the parallel group.

https://esk8content.nyc3.digitaloceanspaces.com/uploads/db2454/original/3X/1/d/1d39f3077cca9f7c079925b2efab9c39d7c1efcf.jpg

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This is how I did mine HOWEVER they seem to break from vibrations.

IMG_20171019_202409.jpg912×1281 173 KB
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22 awg solid wire and chaka cell holders.

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Seems like you need more slack

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I thought mine was breaking due to vibrations as well, but it was in fact high current.

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