TIDUF44 January 2024
The design integrates a full set of battery cell protections, including: cell overvoltage, cell undervoltage, two levels of overcurrent discharge, overcurrent charge, discharge short circuit, overtemperature and undertemperature protections. Furthermore, this design also monitors loss of system level faults, including: cell open wire, host watch dog, charge and discharge MOSFETs faults, overtemperature, and so on. Some of the protections were tested in a TI lab.
This design also includes the individual secondary protections to prevent the hazards from each cell overvoltage and overtemperature. This helps to pass some safety regulations without further work. Secondary overvoltage protections were tested in a TI lab.