Combining Fractional Calorimetry with Statistical Methods to Characterize Thermal RunawayFractional thermal runaway calorimetry (FTRC) techniques were introduced to examine thermal runaway (TR) behavior of lithium-ion (Li-ion) cells. Specifically, FTRC considers the total energy released vs. the fraction of the total energy that is released through the cell casing vs. through the ejecta material. This device has been expanded to universally support FTRC testing of additional cell types including 21700-format, D-Cell format, and large prismatic format Li-ion cells. The TR behavior as influenced by cell format, manufacturer, chemistry, capacity, and in situ safety features are described in this presentation.
Document ID
20190028810
Acquisition Source
Johnson Space Center
Document Type
Presentation
Authors
Walker, William (NASA Johnson Space Center Houston, TX, United States)
Darst, John (NASA Johnson Space Center Houston, TX, United States)
Finegan, Donal (National Renewable Energy Lab. (NREL) Golden, CO, United States)
Hughes, Peter J. (Universities Space Research Association (USRA) Houston, TX, United States)
Pizano, Saul (Universities Space Research Association (USRA) Houston, TX, United States)
Darcy, Eric (NASA Johnson Space Center Houston, TX, United States)