# US 2025/0096367 A1 · Barrier article for a rechargeable electrical energy storage system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0096367 A1 - Document ID: US20250096367A1 - Status: Published application - Kind: A1 - Application number: 18/832,762 - Filed: 2023-01-30 - Published: 2025-03-20 - Earliest claimed: 2022-01-31 - Assignees: 3M Innovative Properties Company - Applicants: 3M Innovative Properties Company - Inventors: Walter R. Romanko; Morgan A. Priolo; Maximilian Ohligs; Mathis A. Muth; Christoph Kuesters; Mitchell T. Huang; Mark A. Fairbanks; Daniel S. Bates; Marcus Kucharz; Juergen Schnusenberg; Harald Gruber; Junkang J. Liu - Web page: https://patentgrep.com/patent/US20250096367A1 ## CPC - H01M 10/658: by thermal insulation or shielding - B32B 5/022: {Non-woven fabric} - B32B 5/024: {Woven fabric} - B32B 5/08: the fibres or filaments of a layer being of different substances {, e.g. conjugate fibres, mixture of different fibres} - B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} - B32B 7/027: Thermal properties - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 27/12: next to a fibrous or filamentary layer - B32B 27/20: using fillers, pigments, thixotroping agents - B32B 27/283: {comprising polysiloxanes} - B32B 37/1284: {Application of adhesive} - H01M 10/625: Vehicles - H01M 10/651: characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations - H01M 50/131: characterised by physical properties, e.g. gas permeability, size or heat resistance - H01M 50/222: Inorganic material - H01M 50/231: having a layered structure - H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) - H01M 50/282: having a layered structure - H01M 50/437: Glass - B32B 2250/04: 4 layers - B32B 2250/05: 5 or more layers - B32B 2250/20: All layers being fibrous or filamentary - B32B 2250/42: Alternating layers, e.g. ABAB(C), AABBAABB(C) - B32B 2255/02: on fibrous or filamentary layer - B32B 2255/26: Polymeric coating - B32B 2262/10: Inorganic fibres - B32B 2262/101: Glass fibres - B32B 2262/105: Ceramic fibres - B32B 2262/144: Non-woven fabric - B32B 2262/148: Woven fabric - B32B 2264/101: Glass - B32B 2264/303: Average diameter greater than 1µm - B32B 2307/304: Insulating - B32B 2307/306: Resistant to heat - B32B 2307/51: Elastic - B32B 2307/732: Dimensional properties - B32B 2457/10: Batteries - B32B 2605/08: Cars - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A barrier article comprises a multilayer article that includes a plurality of core layers and a plurality of binder layers, wherein at least one core layer includes a woven or nonwoven fiber mat or fabric, and wherein at least one binder layer includes a silicone material. The plurality of core layers and binder layers are arranged in an alternating manner. The barrier article is operatively adapted to survive or withstand at least seven cycles of the Torch and Grit Test. The barrier article can be flexible and can provide a thermal insulation and blast protection barrier in, for example, a rechargeable electrical energy storage system. ## Claims ### Claim 1 A thermal barrier article comprising: a plurality of core layers, wherein at least one core layer includes a woven or nonwoven fiber mat or fabric; and a plurality of binder layers, wherein at least one binder layer includes a filled silicone material, wherein the plurality of core layers and binder layers are arranged in an alternating manner, and wherein the thermal barrier article has a ratio of T> blasts withstood divided by sample thickness of at least 4.4 blast cycles/mm. ### Claim 2 (depends on 1) The thermal barrier article of claim 1, wherein the woven or nonwoven fiber mat or fabric comprises a plurality of inorganic fibers. ### Claim 3 (depends on 1) The thermal barrier article of claim 1, wherein the woven or nonwoven fiber mat or fabric comprises a plurality of fibers selected from the group consisting of A-glass, C-glass, D-glass, E-glass, M-glass, R-glass, S-glass, ECR-glass, AR-glass, basalt fibers, silicate fibers (e.g. Astroquartz fibers), silicon carbide fibers, ceramic fibers (e.g. Nextel fibers), or combinations thereof. ### Claim 4 (canceled) ### Claim 5 (depends on 1) The thermal barrier article of claim 1, wherein the filled silicone material further comprises solid glass particles. ### Claim 6 (depends on 1) The thermal barrier article of claim 1, wherein the thermal barrier article has a thickness in the range of from about 0.5 mm to about 10.0 mm. ### Claim 7 (canceled) ### Claim 8 (depends on 1) The thermal barrier article of claim 1, wherein each of the plurality of core layers comprises the same material. ### Claim 9 (depends on 1) The thermal barrier article of claim 1, wherein at least two of the plurality of core layers comprise different materials. ### Claim 10 (depends on 1) The thermal barrier article of claim 1, wherein at least two of the plurality of binder layers comprise different materials. ### Claim 11 (canceled) ### Claim 12 (depends on 1) The thermal barrier article of claim 1, wherein each core layer comprises a thickness from about 0.04 mm to about 1 mm. ### Claim 13 (canceled) ### Claim 14 (depends on 1) The thermal barrier article of claim 1, wherein the filled silicone material comprises inorganic clays and minerals at least one binder layer comprises a solid glass particle filler material. ### Claim 15 (depends on 1) The thermal barrier article of claim 1, wherein the solid glass particle filler material has an average size of about 10 microns to about 100 microns. ### Claim 16 (depends on 1) The thermal barrier article of claim 1, wherein the thermal barrier article has a ratio of T> blasts withstood divided by sample thickness of at least 4.4 is operatively adapted to survive or withstand at least 7 blast cycles of the torch and grit test. ### Claim 17 (depends on 1) The thermal barrier article of claim 1, wherein the thermal barrier article is operatively adapted to have a ratio of T> blasts withstood divided by sample thickness of at least 6.5 blast cycles/mm. ### Claim 18 (depends on 1) The thermal barrier article of claim 1, wherein the barrier article is flexible such that it can bend at least 0.5% in a 3-point bend test (per ASTM D790) before failing. ### Claim 19 (depends on 1) A battery compartment of an electric vehicle comprising at least one battery cell or assembly, wherein the thermal barrier article of claim 1 is disposed between the at least one battery cell or assembly and a lid. ### Claim 20 (depends on 1) A method of preventing or at least mitigating the further spread of blast debris in or from an electric vehicle battery assembly, with the method comprising: at least partially enclosing at least one battery cell or module of an electric vehicle battery assembly with the thermal barrier article of claim 1. ### Claim 21 (depends on 1) Use of a barrier article as a thermal insulation and blast protection barrier in a rechargeable electrical energy storage system, the barrier article comprising the thermal barrier material of claim 1. ### Claim at position 22 22-35. (canceled) ### Claim 36 (depends on 1) The thermal barrier article of claim 1, wherein each binder layer comprises from about 7 to about 60 weight percent inorganic clays and minerals. ### Claim 37 (depends on 36) The thermal barrier article of claim 36, wherein each binder layer comprises from about 40 to about 55 weight percent inorganic clays and minerals. ### Claim 38 A thermal barrier article comprising: a plurality of core layers, wherein at least one core layer includes a woven or nonwoven fiber mat or fabric, wherein at least one of the core layers includes an outer surface; at least one binder layer, wherein the at least one binder layer includes a filled silicone material: and an adhesive layer disposed on the at least one outer surface of the at least one core layer, wherein the thermal barrier article has a ratio of T> blasts withstood divided by sample thickness of at least 4.4 blast cycles/mm.