Thermal runaway prognosis by detecting abnormal cell voltage and soc degeneration

A system for monitoring an occurrence of thermal runaway in a battery pack of a vehicle, comprising:

• a plurality of voltage sensors for obtaining a plurality of voltage measurements at each of a plurality of battery cells of the battery pack;
• and
• a processor configured to:
• determine a mean value based on the plurality of voltage measurements;
• compare a voltage measurement obtained from a selected battery cell to the mean value;
• and
• generate a notification signal when a difference between the voltage measurement from the selected battery cell and the mean value is greater than or equal to a prognostic threshold.

A vehicle, comprising:

• a battery pack having a plurality of battery cells;
• a plurality of voltage sensors for obtaining a plurality of voltage measurements at each of the plurality of battery cells;
• and
• a processor configured to:
• determine a mean value based on the plurality of voltage measurements;
• compare a voltage measurement obtained from a selected battery cell to the mean value;
• and
• generate a notification signal when a difference between the voltage measurement from the selected battery cell and the mean value is greater than or equal to a prognostic threshold.