SLUUCP8 June 2024 BQ41Z50
The BQ41Z50 can balance multiple cells simultaneously if internal cell balancing is selected, Balancing Configuration[CBM] = 0.
If external cell balancing is selected, [CBM] = 1, the gauge will perform a rotation of cell balancing with only one cell to be balanced at a time, starting on the cell with highest dQ. For example, at time 0, Cell 1 has the highest dQ while Cell 2 has the second highest dQ on a 3-series pack. Cell balancing will start to balance Cell 1 first. As time progresses, the dQ in the Cell 1 reduces, and Cell 2 becomes the cell with the highest dQ. The gauge then switches to balance Cell 2. The cell balancing rotation between Cell 1 and Cell 2 continues until all the cells are balanced.