Hi,
I am working on 48V Lithium-Ion battery pack. I am wondering if there is fast MOSFET (or any other technology), to control the current of charging and discharging the battery with high current in term of 800A (about 35 KW).
Any suggestion or article in this direction would be highly appreciated.
Thank you in advance,
Ammar Alsabbagh
Use a tyristor (SCR) to control the current. There are tyristors that work with 1000 Amps current
A thyristor would need a complex scheme for turning off and result in poor performance as it will only achieve very low switching frequency.
It is far more suitable to use low-voltage MOSFETs.
Within the 100V-regime, these are available in sub-milliohm values, capable to carry 100 to 150A with proper cooling installed.
Paralleling will help to increase the current at reasonable losses.
Cheers - Martin
Dear Ammar Alsabbagh ,
quickly checking, something like an IXFN200N10P could be a reasonable choise,
though you still may need to parallel 4-5 pieces.
Simple in simulation, potentially tricky in reality as a layout needs to be found that achieves balanced conditions for all MOSFETs involved.
Dear Valentin Bogatu
Thank you very much for the hint, I will check it.
is it possible to control the current in both direction? or only one direction is possible as the thyristor allow the current in one direction and block it in the other direction?
Best regards
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