Author Topic: PDB protection against Battery suply  (Read 744 times)

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Offline VrouuumTopic starter

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  • Country: fr
PDB protection against Battery suply
« on: September 21, 2018, 04:29:07 pm »
Hello all

I'm looking for some help regarding some drone application.
I'm not used to design electronic circuit so please be kind !

What I want to do is to protect my drone's electronic from being injured as best as I can.
I just had a bad soldering that failed during a crash and created a short circuit on the battery supply leading to an expensive replacement ..

So the battery is a 6s lipo which means 6 * 3.7V = 22.2V Nominal. It can be charged between 25.2V and 19.2V.
It can deliver 1800mah with a discharging coefficient of 95C. My circuit will only need at maximum 60A in peak so let's say less than 70A to be large.

I would like to protect it against short circuit so i guess I need a fuse rated to 70A 32V fast blowing. Does it exist for small application ? I can't install a big one as i have no space. If someone knows a good reference, I have been looking for long ...

What I also want to do is to protect the circuit against OverVoltage.
I allready have a capacitor that is filtering and smoothing  the voltage.
Is a DVS diode good to connect on this kind of circuit. I dont want my circuit to blow each time i have some small overvoltage.
I would like to limit the voltage of the circuit as much as possible bellow let's say 26V ?

How would I do that in an easy and tiny way ?

Thanks to all. :-+
 


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