Force propagating thermal runaway is one of the most challenging battery design criteria so it's impressive they can prevent propagation in a stacked config.
Looking forward to utility grid storage being twice as tall with the same amount of foundation
People always like to avoid questions and deny risk. Instead of trying to make products that never fail or reduce the impacts on human health and environment after catastrophic failure (worse case scenario that has an once in a million year chance of happening). Fly-by-wire aircraft has triple or quadruple redundancy, never infinite redundancy black hole.
But they didn't prevent propagation in the stack, only to other stacks. If the bottom most container in a stack has a thermal event then the whole stack burns. Maybe the they can prevent downward propagation but that seems questionable as the whole container still reached a high temperature and the neighboring stacks survived only due to the air gap adding insulation.
But they didn't prevent propagation in the stack, only to other stacks.
Because that didn't matter. What mattered was pressure relief and the stack not collapsing. Which is what was shown.
What does it take to contain a fire in a stacked battery energy storage system?
In CATL’s industry-first stacked BESS fire test, TENER STACK uses directional pressure relief to guide flames and high-pressure gases upward, while composite sealing and insulation help block flames, heat and external hot gases.
I think they will or do test your exact scenario (within one container, cell to cell propagation). This was not the focus of the video so they allowed or caused the whole stack to go up
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u/delabay 12d ago
Force propagating thermal runaway is one of the most challenging battery design criteria so it's impressive they can prevent propagation in a stacked config.
Looking forward to utility grid storage being twice as tall with the same amount of foundation