Flame-retardant heat-insulation material

A flame-retardant thermal insulation material with inorganic fillers and binders addresses the lack of flame retardancy and heat insulation in secondary battery packs, ensuring safety by blocking heat and preventing ignition.

JP2025163311AInactive Publication Date: 2025-10-29SEIWA ELECTRIC MFG CO LTD
5 Cites 0 Cited by

Patent Information

Application Number
JP2022141066
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2022-09-05
Publication Date
2025-10-29
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing insulation materials for secondary battery packs, such as those used in hybrid and electric vehicles, lack sufficient flame retardancy and heat insulation properties, leading to potential thermal runaway and accidents due to heat transfer between lithium-ion battery cells.

Method used

A flame-retardant thermal insulation material comprising a sheet-like substrate with a laminated thermal insulation layer made of inorganic thermal insulation fillers and binders, such as flaky mica, glass balloons, and inorganic binders like silicone-based binders, providing both flame retardancy and high heat insulation.

Benefits of technology

The material effectively blocks heat and prevents ignition, maintaining structural integrity and safety by preventing heat transfer between battery cells, while being economical and easy to apply.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

To provide a flame-retardant insulation material which has a high heat insulation property for effectively insulating heat, a flame retardant property for preventing fire, and high strength and excellent cost effectiveness, and a manufacturing method thereof.SOLUTION: A material includes: a sheet-like base material having an oxygen index of 26 or more; and a heat insulation layer laminated on at least one face of the sheet-like base material. The heat insulation layer is composed of an inorganic heat insulation filler and an inorganic binder. Further, the inorganic heat insulation filler may be at least one selected from a flaky mica, a glass balloon, a fly ash balloon, a silas balloon, a perlite, a silica xerogel, and a silica aerogel. Also, the inorganic binder may be at least one selected from a silicone-based binder, a silica-based binder, an alumina-based binder, and zirconia-silica-based binder.SELECTED DRAWING: Figure 1
Need to check novelty before this filing date? Find Prior Art