STMICROELECTRONICS AEK-POW-BMSNOTX Evaluation Board, L9963E, Li-ion Battery Monitoring and Protecting

AEK-POW-BMSNOTX is a battery management system (BMS) evaluation board that manages from 4 to 14 battery cells. It is a non-isolated battery management node dedicated to auxiliar battery packs able to directly connect the MCU via standard SPI protocol. The board is based on the L9963E Li-ion battery monitoring and protection chip for high-reliability automotive applications. The main activity of the 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). The embedded L9963E can act as a transceiver, directly communicating with an MCU via SPI.

• Hosts the L9963E AEC-Q100 qualified automotive multicell battery monitoring and balancing IC
• Voltage monitoring of every single cell and of the entire battery node
• Current sensing of the entire battery node
• 4 GPIOs to connect NTC sensors present on the battery pack connector
• 3 NTC sensors that can be connected to CN3, CN4 and CN5 connectors
• 1 NTC sensor to measure the board temperature
• CN1 connector to communicate with an MCU board via SPI, CN2 connector for diagnostic functions
• CN6 connector for MCU ADCs dedicated to the NTC sensors reading
• Passive balancing available, compact size: 100mm x 76mm
• Included in the AutoDevKit ecosystem