A One-Way Coupled Modeling Method to Simulate Battery Pack Thermal Runaway Initiated by an External Impact 2023-01-0593
There is an ongoing proliferation of electric and electrified vehicles as manufacturers seek to reduce their carbon footprint and meet the carbon reduction targets mandated by governments around the world. An ongoing challenge in electric vehicle design is the efficient and safe design of battery packs. There are significant safety challenges for lithium battery packs relating to thermal runaway, which can be initiated through overheating and internal short from defects or external damage. This work proposes a robust method to couple the mechanical damage in a battery module calculated from a dynamic model with a thermal model of the battery that includes heating from electro-chemical sources as well as Arrhenius reactions from the battery cells. The authors identify the main sources of thermal runaway initiation and propagation in an impact scenario simulating a vehicle collision. The modeling approach was developed and validated using test data. This method can be used to design and engineer reliable thermal runaway mitigation prior to building and testing large prototype battery packs.
Citation: Hoffmeyer, M., Shah, B., and Surampudi, B., "A One-Way Coupled Modeling Method to Simulate Battery Pack Thermal Runaway Initiated by an External Impact," SAE Int. J. Adv. & Curr. Prac. in Mobility 6(1):299-308, 2024, https://doi.org/10.4271/2023-01-0593. Download Citation
Author(s):
Matthew Hoffmeyer, Bansal Shah, Bapiraju Surampudi
Affiliated:
Southwest Research Institute
Pages: 10
Event:
WCX SAE World Congress Experience
e-ISSN:
2641-9645
Also in:
SAE International Journal of Advances and Current Practices in Mobility-V133-99EJ
Related Topics:
Thermal runaway
Battery packs
Lithium-ion batteries
Electric vehicles
Batteries
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