Figure 1. Aek-Pow-Bms63En Evaluation Board - STMicroelectronics AEK-POW-BMS63EN User Manual

The AEK-POW-BMS63EN provides an elaborate monitoring network to sense the voltage, current, and temperature of each
cell. This sensing allows elaborating the SOC of each battery cell and, consequently, the state of charge of all battery packs.
The SOC allows assessing the remaining battery capacity, which equates to the remaining driving range. It also allows
estimating the SOH of each cell, through an algorithm that calculates the difference in time of the real SOC from the nominal
SOC during the charging/discharging phases. Using the SOC of each cell, it is possible to activate the cell passive balancing.
The AEK-POW-BMS63EN can work in two different daisy chain topologies: centralized and dual access ring.
In these topologies, the board communicates through an MCU board with one (for the centralized configuration) or two (for
the dual access ring configuration) AEK-COM-ISOSPI1, which allows converting SPI signals in isolated SPI signals (and vice
versa), thereby reducing the number of necessary wires from 4 to 2 and implementing differential communication for higher
noise immunity. The communication is performed at two different speeds: high speed of 2.66 Mbps and low speed of 333 kbps.
Note: The AEK-POW-BMS63EN evaluation board is designed for R&D laboratory use only; it is not intended for field
use in vehicles.
UM3185 - Rev 1
Figure 1. AEK-POW-BMS63EN evaluation board
UM3185
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