Question
L9963E serial cell 42s
hi.
I configured a centralized BMS using three STM32L431 and AEK-POW-BMS63ENA.
Instead of using a battery, a battery pack was implemented using a DC power supply and a fixed resistor.
(Refer to the picture below)
When DC150V is applied, the voltage of each resistor should be 3.75V.
However, I confirmed that the voltage came out differently.
[ Voltage data for AEK-POW-BMS63ENA(1)]
[ Voltage data for AEK-POW-BMS63ENA(2)]
[ Voltage data for AEK-POW-BMS63ENA(3)]
When 3 BMS are connected in parallel and DC 50V is applied, the voltage is confirmed normally.
[ Voltage data for AEK-POW-BMS63ENA(1)]
[ Voltage data for AEK-POW-BMS63ENA(2)]
[ Voltage data for AEK-POW-BMS63ENA(3)]
What's the problem with connecting them in series?