Authors

P. Hermann, Farasis Energy Europe, Frickenhausen

Year

2026

Print Info

Production/Publication ÖVK

Summary

The continuous increase in lithium-ion battery energy density significantly intensifies the thermal load released during cell thermal runaway. The high-energy NMC90 pouch cell investigated in this study (P79) achieves a cell-level specific energy of 314 Wh/kg and exhibits peak runaway temperatures exceeding 900 °C under externally triggered abuse conditions. At the same time, emerging regulatory frameworks such as GB 38031-2025 emphasize suppression of thermal propagation, while regulations such as UNECE R100 Rev.3 require sufficient warning time and occupant protection during thermal runaway events.

Conventional mitigation strategies typically rely on dedicated inter-cell thermal barriers such as ceramic plates or aerogels. While effective in delaying heat transfer, these solutions increase interface thickness and introduce additional costs of approximately 1–2 € per cell. In high-voltage 800 V-class cell-to-pack architectures, where approximately 190–192 cells are connected in series. Depending on interface thickness and stack geometry, these layers may occupy approximately 5–10 % of the total stack volume.
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ISBN

978-3-9504969-5-6

DOI

https://doi.org/10.62626/sffx-5u1h Copy link

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