STMicroelectronics Battery Management System Module Based On L99BM114 Battery Monitoring Controller Development Board

The STMicroelectronics Battery Management System (BMS) evaluation board can handle from 1 to 31 Li-ion battery nodes. Each battery node manages from 4 to 14 battery cells, for a voltage range between 48 V and 800 V. The main activity is monitoring 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.

• Voltage monitoring of every single cell and of the entire battery node
• 5 GPIOs to connect temperature sensors as NTCs
• An NTC hosted on the L99BM114 to sense the chip temperature
• Passive balancing
• Compact size of 100 mm x 76 mm