Vital Considerations when Selecting a Battery Management System

The L9963E, a groundbreaking battery management system (BMS) from STMicroelectronics, has been making waves in the industry. Released at the beginning of the year, this device is designed specifically for Battery Management Systems in New Energy Vehicles.

The L9963E boasts a unique architecture that provides dedicated resources for each cell to process electrical data, ensuring precision and efficiency. One of its standout features is the redundancy mechanism that cross-checks its analog-to-digital converters (ADC) to guarantee their accuracy, with a maximum error of ±2 mV while measuring the current to know the actual capacity of each cell.

ST offers two evaluation boards for the L9963E: the EVAL-L9963E-MCU and the EVAL-L9963E-NDS. The former includes a microcontroller and comes with a graphical user interface, making it easier for developers to create applications faster. The latter attaches to the EVAL-L9963E-MCU to put multiple L9963E in a daisy chain, allowing for the connection of up to 31 devices while maintaining a latency of less than 4 μs.

A BMS, like the L9963E, plays a crucial role in ensuring the battery's safe operations by detecting over-and under-voltages, overheating, or overcurrent. It also helps determine the battery's state of health (SOH) and remaining useful life (RUL) by computing its actual maximum capacity, which decreases over time. Additionally, a BMS can balance its charge and discharge to ensure an even wear, thus prolonging the battery's lifespan and extracting more performance.

In electric vehicles, a BMS must initiate a shutdown in the event of a crash to prevent catastrophic damages. The L9963E is flexible enough to adapt to a lot more designs than the traditional electric car, making it suitable for various vehicles and applications.

Moreover, the L9963E does not require external Zener diodes, which simplifies the PCB and reduces the overall costs. Its small 10 mm x 10 mm TQFP64EP package also makes it easy to use in many types of vehicles or applications, thus saving on development costs.

For more information about the L9963E and other innovative products from STMicroelectronics, visit www.st.com. Many customers love to pair the L9963E with an SPC58 Chorus microcontroller due to its large storage capacity and multicore architecture.

In conclusion, the L9963E is a game-changer in the field of Battery Management Systems, offering precision, efficiency, and flexibility, making it a perfect choice for New Energy Vehicles and various other applications.