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Recommendations and Guidelines for Battery Crash Safety and Post-Crash Safe Handling
BASt.
BASt.
Swedish National Road and Transport Research Institute.
EMI.
Show others and affiliations
2014 (English)Report (Other academic)
Abstract [en]

Electric vehicles (EV) present a research challenge for safety engineers. These vehicles are designed using conventional vehicle design strategies but do not contain conventional materials or structures. Accident analyses cannot be conducted until sufficient EVs are involved in a crash and are reported in crash databases. Until such data exists, researchers must use other research methods to understand and predict potential problems. The passive safety activities in the EVERSAFE project used conventional accident analysis, computer simulation, physical testing, and literature reviews to get a better understanding of the issues for EV and their battery systems. Based on current practice, Lithium-ion (Li-ion) batteries are the main chemistry that should be explored and pouch type cells are the most vulnerable for damage.

Conventional vehicles were used in EVERSAFE as a surrogate for EVs to identify expected deformation and acceleration loads from real crashes. Chemical analyses of the battery components identified the potential processes that can lead to emissions of flammable or toxic gases. Simulation activities in EVERSAFE have developed new battery models and an effective methodology to assess worst case loading in a battery was also developed. Component tests of the battery cells demonstrated that the pouch cell can be quite resilient to shear and penetration loads. Full scale crash tests demonstrated safe battery performance even for more severe tests than those the vehicle are required to meet. A complementary part of the study was to determine what procedures and equipment are needed for rescue services if they attend a crash with an EV.

Place, publisher, year, edition, pages
2014. , p. 99
Series
EverSafe ; D3.1
Keywords [en]
Electric vehicle, Battery, Accident, Characteristics, Chemical analysis, Impact (collision), Simulation, Impact test (crash), Post crash
National Category
Vehicle Engineering
Research subject
90 Road: Vehicles and vehicle technology, 911 Road: Components of the vehicle
Identifiers
URN: urn:nbn:se:vti:diva-14297OAI: oai:DiVA.org:vti-14297DiVA, id: diva2:1367933
Projects
EverSafeAvailable from: 2019-11-05 Created: 2019-11-05 Last updated: 2020-04-15Bibliographically approved

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Report(21809 kB)72 downloads
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Appendix A(6764 kB)96 downloads
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Appendix B(2545 kB)10 downloads
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Thomson, Robert

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