Hello,
i tried to keep simple with the title.
Now not knowing the name of the circuit i'm looking for i'm trying to get to make a switch that can cut off before blowing in case of a short circuit. Also the idea is to have a high power switch that is inside an IP68 enclosure .
My problem .
I have a 9s100p lico battery made from NCR18650B cells i use it with a BMS but what ever the BMS if i do a short test the bms blows. I have spent for over 2000 usd of bms and always have the same blow , a mosfet will simply blow or burn up with in some cases leaving the circuit closed.
Now my question is what can i do to avoid that?
Ultra fast fuse?
A voltage comparator that will open the circuit in case of a short?
A hall effect sensor that will order the circuit to open in case of a short?
i would need a circuit that can simply not burn up and let the BMS burn up. so that would mean very high responsive electronics and not being too sensible since i use a 80A motor that will pull it's 800A at it's start (max measured ) even if i limit that with a pwm controller to 200A with a "soft" start but i do have a "turbo start" so 800A
My problem is that regulations will require me to test shorts on the battery so it must not blow up and make the battery malfunction.
Also i would need to open and close the circuit with a switch to turn everything off/on and if possible to cut the circuit on the + and -
Has anyone heard of this and if not how could i make a system fast enough not to burn up.
Thanks
Franz
i tried to keep simple with the title.
Now not knowing the name of the circuit i'm looking for i'm trying to get to make a switch that can cut off before blowing in case of a short circuit. Also the idea is to have a high power switch that is inside an IP68 enclosure .
My problem .
I have a 9s100p lico battery made from NCR18650B cells i use it with a BMS but what ever the BMS if i do a short test the bms blows. I have spent for over 2000 usd of bms and always have the same blow , a mosfet will simply blow or burn up with in some cases leaving the circuit closed.
Now my question is what can i do to avoid that?
Ultra fast fuse?
A voltage comparator that will open the circuit in case of a short?
A hall effect sensor that will order the circuit to open in case of a short?
i would need a circuit that can simply not burn up and let the BMS burn up. so that would mean very high responsive electronics and not being too sensible since i use a 80A motor that will pull it's 800A at it's start (max measured ) even if i limit that with a pwm controller to 200A with a "soft" start but i do have a "turbo start" so 800A
My problem is that regulations will require me to test shorts on the battery so it must not blow up and make the battery malfunction.
Also i would need to open and close the circuit with a switch to turn everything off/on and if possible to cut the circuit on the + and -
Has anyone heard of this and if not how could i make a system fast enough not to burn up.
Thanks
Franz
