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US 2010/0075221 A1Published application
Cell thermal runaway propagation resistance using an internal layer of intumescent material
AssigneeTesla Motors, Inc.
InventorsVineet Haresh Mehta, Alex Prilutsky, Weston Arthur Hermann
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Abstract
A means for inhibiting the propagation of thermal runaway within a plurality of batteries is provided, wherein the means is comprised of at least one layer of intumescent material interposed between the interior surface of the casing of a battery and the corresponding electrode assembly.
Claims11
A battery, comprising:
- a cell case having an outer surface, a first end and a second end, wherein said first end is closed by a cell case bottom, and wherein said second end is comprised of a central open portion;
- an electrode assembly contained within said cell case, wherein a first electrode of said electrode assembly is electrically connected to said cell case;
- a cap assembly mounted to said cell case, said cap assembly closing said central open portion of said second end, wherein said cap assembly further comprises a battery terminal electrically isolated from said cell case and electrically connected to a second electrode of said electrode assembly;
- and
- a layer of an intumescent material interposed between said electrode assembly and an interior surface of said cell case.
2 more elements
Dependencies are inferred from the claim text.