The trouble with a single module is that you have to wait for the shield restoration effect to complete before you can command the next cell charge, during which an active heat sink is not doing any useful work. You may be able to squeeze in two Shield Cell Bank uses if it is a very small class module, for they have quicker timing, although I have not checked that and I doubt it is worth a heat sink either way.
Two Shield Cell Bank modules around class 5–6 will span one heat sink duration nicely if staggered, and if you have a good heat margin between idle and critical then you can stagger three SCBs without overheating. There will be a couple of short burst intervals where the heat sink is fighting two SCBs, but usually not for long enough to reach critical heat.