I am trying to provide wired power to a device that is designed to run off of a 24V Li-ion battery pack.
The battery pack has six Li-ion cells in series and the control board is looking at each individual cell's voltage to determine whether or not the battery is functioning properly and whether or not the device is permitted to operate.
The control board is powered from the bottom cell (4V) and I expect that the load varies enough to cause the cells to appear unbalanced when using a simple voltage divider. My power supply requires a lot of capacitance on the output, so I had considered using 6 capacitors in series to emulate the individual cell voltages, but there wouldn't be any current flow on the lowest cell to power the board.
I am presently using a 24VDC supply and five 500mA LM317 linear regulators to produce 20, 16, 12, 8, and 4 Volts respectively.
I feel like this is a pretty brute force solution and would appreciate any recommendations as to something more elegant.
The battery pack has six Li-ion cells in series and the control board is looking at each individual cell's voltage to determine whether or not the battery is functioning properly and whether or not the device is permitted to operate.
The control board is powered from the bottom cell (4V) and I expect that the load varies enough to cause the cells to appear unbalanced when using a simple voltage divider. My power supply requires a lot of capacitance on the output, so I had considered using 6 capacitors in series to emulate the individual cell voltages, but there wouldn't be any current flow on the lowest cell to power the board.
I am presently using a 24VDC supply and five 500mA LM317 linear regulators to produce 20, 16, 12, 8, and 4 Volts respectively.
I feel like this is a pretty brute force solution and would appreciate any recommendations as to something more elegant.
