Gel gasket

Plain-English summary

Problem

How can battery fires and thermal runaway in EV packs be prevented?

Solution

The present disclosure provides a gel gasket comprised, in part, of a pressure sensitive adhesive.

Key novelty

The gel gasket is flame retardant and has anti-corrosive properties.

Applications

Lithium-ion cellsEV batteriesGrid storage

Relevant search intents

flame retardant

Claims preview

1 . A gel gasket comprising: at least one pressure sensitive adhesive, a flame-retardant agent, a tackifier, a catalyst, a stabilizer, and an inhibitor, wherein the inhibitor comprises alkyne alcohol; wherein the at least one pressure sensitive adhesive comprises a polyoxyalkylene adhesive obtained by reacting a monomer or polymer with a cross-linking agent, the cross-linking agent having at least one siloxane bond and at least one reactive functional group, the at least one reactive functional group being a hydrosilyl group; wherein the amount of the cross-linking agent is in a range of about 2.0 parts to 7.0 parts by weight per 100 parts of the monomer or polymer for the at least one pressure sensitive adhesive; wherein the flame-retardant agent is a phosphorus flame-retardant agent; wherein the tackifier has an acid value of less than 50 mg KOH/g; wherein the catalyst comprises a platinum compound; wherein the stabilizer is a Br nsted base; wherein the stabilizer is a hindered amine light stabilizer; and wherein the gel gasket has a storage modulus in the range of 1,000 Pa or more and 25,000 Pa or less after storage at 66 C./80% RH for at least 2 weeks. 2 . The gasket of claim 1 wherein the at least one pressure sensitive adhesive comprises a first pressure sensitive adhesive disposed on a backing, the backing selected from the group consisting of polyester, nylon, polyvinyl chloride, polyvinylidene chloride, polyimide, polyamide, polyphenylene sulfide, polyether ether ketone, ionomer, polyolefin, fluororesin, polychlorotrifluoroethylene, polyvinylidene fluoride, polyvinyl fluoride, perfluoroalkoxy fluororesin, tetrafluoroethylene hexafluoropropylene copolymer, ethylene tetrafluoroethylene copolymer, ethylene chlorotrifluoroethylene copolymer, or metal foil. 3 . The gasket of claim 2 further comprising a core film.

Linked approaches

Fire-resistant electrolytes

Electrolyte formulations that suppress ignition and heat release.

Plain-English summary

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