AEK-POW-BMSWTX

AEK-POW-BMSWTX is a battery management system module based on the L9963E and L9963T. The AEK-POW-BMSWTX is a battery management system (BMS) evaluation board that manages from 4 to 14 battery cells. The main advantage of this evaluation board is ensuring isolated connection to an external MCU, thanks to the embedded transceiver. The board is based on the L9963E Li-ion battery monitoring and protection chip for high-reliability automotive applications and the L9963T general purpose SPI to isolated SPI bidirectional transceiver. The main activity of L9963E is monitoring the cells and battery node status through stack voltage measurement, cell voltage measurement, temperature measurement, and coulomb counting. Measurement and diagnostic tasks can be executed either on demand or periodically, with a programmable cycle interval. Measurement data are available for an external microcontroller to perform charge balancing and to compute the state of charge (SOC) and the state of health (SOH).

• Provides an elaborate monitoring network to sense the voltage of each cell
• Possible to sense the current of the entire battery pack
• Sensing allows elaborating SOC of each battery cell, consequently, SOC of all battery packs
• Hosts the L9963E AEC-Q100 qualified automotive multicell battery monitoring and balancing IC
• Hosts L9963T AEC-Q100 automotive general purpose SPI to isolated SPI bidirectional transceiver
• Voltage monitoring of every single cell, entire battery node, current sensing of entire battery node
• 5 GPIOs to connect temperature sensors as NTCs, Passive balancing
• Compact size: 100mm x 76mm and included in the AutoDevKit ecosystem
• CN1 connector that allows establishing communication with an MCU board via SPI
• CN2 connector that interfaces directly to an MCU board for control and diagnostic functions