@alexpescaru , If you want, you can look at the latest plan here.
Basically, we aim for 52.5V until the highest cell exceeds 3.485V. From that point on, the charge voltage is penalised by the amount by which the highest cell exceeds that threshold, multiplied by 30 (twice the cell count). In testing it results in the high cell leveling off at 3.5V. It uses a low pass filter to keep the calculated voltage setpoint stable.