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Vinnie & Shaun Design
#21
Too early in the morning to think, but I don't think you can use just a LED in place(series) or parallel to a fuse. Depending on the wiring, the LED will either not light up due to not enough voltage, burn out due to too much current, not let the cell charge (light emitting DIODE), or the required resistor will simply waste too much power to be practicable. You'd need much more components to make it work efficiently and reliably.

For powerwall use, these PCB systems are a dubious solution looking for a non-existing problem. Even if it could pinpoint a broken fuse, dismantling/rebuilding the stack will likely take more time than checking the fuses on a standard pack. And besides, a broken fuse doesn't really cause a problem - even in a modest 100p system you lose just 1% capacity per cell. Not really noticeable in actual use, and detectable only if you have accurate monitoring systems in place.
Modular PowerShelf using 3D printed packs.  60kWh and growing.
https://secondlifestorage.com/showthread.php?tid=6458
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#22
Hi,

(05-16-2020, 12:08 AM)ajw22 Wrote: Too early in the morning to think, but I don't think you can use just a LED in place(series) or parallel to a fuse.  Depending on the wiring, the LED will either not light up due to not enough voltage, burn out due to too much current, not let the cell charge (light emitting DIODE), or the required resistor will simply waste too much power to be practicable.  You'd need much more components to make it work efficiently and reliably.

For powerwall use, these PCB systems are a dubious solution looking for a non-existing problem.  Even if it could pinpoint a broken fuse, dismantling/rebuilding the stack will likely take more time than checking the fuses on a standard pack.  And besides, a broken fuse doesn't really cause a problem - even in a modest 100p system you lose just 1% capacity per cell.  Not really noticeable in actual use, and detectable only if you have accurate monitoring systems in place.

Thank you so much for the reply, it just was a newbie question and it is clear that it is not a good idea.

Saludos!!
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