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3M Thermal Runaway Barrier Materials
CONNECT WITH A 3M EXPERTBrowse 3M solutions for barrier materials
Addressing thermal runaway propagation above the cells
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Thermal runaway propagation challenges needs solutions that are adaptable to different cell types and customer designs. Our above cell solutions can help address thermal isolation and stability concerns in cylindrical cell applications.
3M™ Thermal Barrier 5000 Series is a dispensable, lightweight silicone-based solution that helps protect neighboring cells from the energy given off from a failed cell by creating a fire retardant, electrically and thermally insulating barrier layer.
3M™ Flame Barrier Material FRB-NT¹ is an inorganic-based, halogen-free material. It features a UL 94 5VA flame rating (UL File E65069) and is available in various thicknesses, providing good dielectric strength.
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Engineered to perform where you need it3M TB5000 is low density material that provides high dielectric strength and low thermal conductivity. It can be applied to areas in and around cells to help provide thermal and electrical barriers and to help address thermal runaway propagation.
3M FRB-NT provides excellent ignitability resistance, as well as excellent arc and track resistance. It is dimensionally stable (low moisture absorption and low shrinkage at high temperature). The material is easily slit, cut, formed and die cut to fit into your current assembly needs.
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Solutions for today. Testing for the future.Our in-house material testing simulates the high temperatures and aggressive pressures of an xEV battery vent stream and incorporates tiny metal oxide particles that flow along with the hot gasses. This test enables the development of materials that can withstand extreme pressures, particulates and temperatures.
We’re also developing material level tests to better understand heat flux measurements, compression during prismatic cell expansion and holistic vibration testing encompassing the pack and pack lid.
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Disclaimer for above cell barrier materials
¹Halogen Free defined as 1) no halogen compounds are intentionally added to the product or used in the manufacturing process for the product and 2) any impurities present are less than 900 ppm bromine, less than 900 ppm chlorine, and/or less than 1500 ppm total bromine and chlorine. The latter are the levels set forth in certain industry standards, such as the International Electrotechnical Commission (IEC) 61249-2-21 standard.Intended and Restricted Use: Some products on this page have not been designed or tested for use in certain automotive applications, including, but not limited to, automotive electric powertrain battery or high voltage applications. For more information on specific products contact your 3M Application Engineer. Read our full intended and restricted use disclaimers here (PDF, 96 KB).
Thermal runaway propagation management between the cells
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Combining our core technologies in ceramics, non-wovens and advanced materials, 3M provides powerful thermal runaway propagation solutions right where you need it in your xEV battery designs. Our between cell materials are compressible, high temperature stable and compatible with various cell types.
3M™ Thermal Runaway Barrier 600 and 700 Series is a compressible, flame resistant, thermal insulation mat material that has good dimensional stability at temperatures up to 1200°C.
The mat features non-classified fibers, has good electrical resistance, and is designed to help slow down heat transfer from one cell to the next.
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Engineered to perform where you need it3M TRB600 and 3M TRB700 are engineered to perform within very limited space. The thin, compressible materials allows for flexibility as battery cells expand and shrink during cell cycling.
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Solutions for today. Testing for the future.At 3M, our experts are continuously testing thermal runaway propagation solutions in various applications and cell types. Our work involves developing materials that resist high temperatures, pressures and particulates.
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Disclaimer for between cell barrier materials
Intended and Restricted Use: Some products on this page have not been designed or tested for use in certain automotive applications, including, but not limited to, automotive electric powertrain battery or high voltage applications. For more information on specific products contact your 3M Application Engineer. Read our full intended and restricted use disclaimers here (PDF, 97 KB).
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Testing for more than just temperature in thermal runaway propagation
In our 3M labs we exposed a standard 3M branded flame barrier material to high-temperature flame as well as the metal particulates typically present during an xEV battery thermal event.
The results clearly show: to help address thermal runaway propagation effectively, your solutions should include materials that help withstand particulates as well as flame and pressure.
Inorganic paper and board materials to help address thermal runaway propagation
As a longstanding leader in materials science, 3M provides expertise in inorganic paper and board materials for xEV thermal runaway propagation management. We can employ application simulative testing methods for verified effectiveness at very high temperatures.
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3M™ CeQUIN™ Inorganic Insulating Papers are 3M’s highest inorganic-content papers. They are comprised primarily of glass fibers and microfibers, inorganic fillers and less than 10% organic binders. High inorganic content of CeQUIN I and II papers deliver excellent thermal and dielectric stability.
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Flame Barrier Material3M™ Flame Barrier Material FRB-NT is an inorganic-based, halogen-free1 material. It features a UL 94 5VA flame rating (UL File E65069), is available in various thicknesses, and provides good dielectric strength. Contact an expert for product information.
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Other flame resistant papers
We continue to develop reinforced, inorganic-based paper which can be combined with flame retardant tapes for attachment to xEV battery lids. These papers are very high temperature and flame resistance with excellent dielectric strength. Contact an expert for product information.
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Other flame resistant boards
Formulated for high energy battery packs, our rigid board materials can be used with metal-bonding adhesives without the potential shedding associated with mica. These materials may be used for 3D forming or spray coating under shaped xEV battery lids. Contact an expert for product information.
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Disclaimer for under lid and between module barrier materials
¹Halogen Free defined as 1) no halogen compounds are intentionally added to the product or used in the manufacturing process for the product and 2) any impurities present are less than 900 ppm bromine, less than 900 ppm chlorine, and/or less than 1500 ppm total bromine and chlorine. The latter are the levels set forth in certain industry standards, such as the International Electrotechnical Commission (IEC) 61249-2-21 standard.Automotive Applications: Some of the products on this page are considered industrial products and may not been designed or tested for certain automotive applications and may not fully adhere to typical automotive designs or quality system requirements. For more information on specific products contact your 3M Application Engineer Read our full automotive disclaimer here (PDF, 93 KB).
Intended and Restricted Use: Some products on this page have not been designed or tested for use in certain automotive applications, including, but not limited to, automotive electric powertrain battery or high voltage applications. For more information on specific products contact your 3M Application Engineer. Read our full intended and restricted use disclaimers here (PDF, 96 KB).
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