Hi all,
i have this problem: i have a 4x3 battery bank 48V-660Ah/C20 as output. I should connect this bank to a 48V/300A cc motor: how i can protect batteries from undevlotage and short circuit? I thought about a ralays or a similar solution: what do you think?
Thanks
If you are handy with electronics you could make yourself a power
mosfet switch system. It would take a few mosfets to handle that much
power however, you could switch mode the output and do a current monitor
to limit the load to 20 amps..
Basically it would be a current mode switch that switches off
when current goes over and comes back on with in a short period. The
idea is to use the motor as the inductor. The end results should show a
nice smooth output with minimum heat from the mosfets and keeping the
switching freq low, it shouldn't cause much excessive heating in the motor.
Of course, I am not sure what you mean by a cc motor? Close circuit
motor, like an integrated type?
If all you want to do is simply open the circuit then doing a relay
with a threshold driver could work however, it'll chatter, because the
battery will recover voltage when the load is removed and try again
until it gets to a point where there isn't enough to trigger the threshold!
Post back when you have a clearer view of what you need.
Have a good day..
Jamie