Provided are a thermal runaway suppression sheet with maximum thickness of 3 mm or less and capable of insulating to temperature at which a propagation of thermal runaway in a lithium ion battery can be suppressed, and a battery pack and a battery module. The thermal runaway suppression sheet includes a thermal energy consumption layer containing a silica-based inorganic fiber having a hydroxyl group, and a thermal diffusion layer having a thermal conductivity in the planar direction that is 10 to 200 times as high as the thermal conductivity in the thickness direction. The thermal runaway suppression sheet has a thickness of 3 mm or less. When the thermal runaway suppression sheet is locally heated, the thermal energy consumption effect based on the silica-based inorganic fibers contained in the thermal energy consumption layer can be efficiently utilized by the thermal conduction along the planar direction of the thermal diffusion layer.
H01M 10/653 - Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
H01M 10/6551 - Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
H01M 50/213 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
2.
THERMAL RUNAWAY SUPPRESSION SHEET, BATTERY PACK USING SAME, AND BATTERY PACK MODULE
Provided are: a thermal runaway suppression sheet having a maximum thickness of 3 mm or less and capable of providing heat insulation to a temperature that can suppress a chain of thermal runaway in a lithium-ion battery; a battery pack using the same; and a battery pack module. The thermal runaway suppression sheet is a sheet having a thickness of 3 mm or less and including a thermal energy consumption layer configured by a sheet of silica inorganic fibers having a hydroxyl group; and a heat dissipation layer in which in-plane thermal conductivity is 10-200 times greater than the thermal conductivity in the thickness direction. The present invention is thin and provides an excellent heat insulation effect because the heat dissipation layer conducts heat in the planar direction for localized heat production, allowing efficient use of the thermal energy consumption effect of the silica inorganic fibers in the thermal energy consumption layer.
D21H 13/40 - Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool or glass fibres
F16L 59/02 - Shape or form of insulating materials, with or without coverings integral with the insulating materials
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
Disclosed is a heat insulator comprising a substrate comprising of a bulk of silica-based inorganic fiber containing a hydroxyl group; a metallic or ceramic infrared mediator held on at least a part of one surface of the substrate; and a silica cured product holding the infrared mediator on/in the substrate. As the infrared mediator, a metal foil or a ceramic particle may be used. This heat insulator exhibits excellent heat insulating performance in a high temperature range of 600° C. or more, and can be molded into a three-dimensional shape which can be directly mounted to a structure.
E04B 1/76 - Heat, sound or noise insulation, absorption, or reflectionOther building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
B32B 15/14 - Layered products essentially comprising metal next to a fibrous or filamentary layer
B32B 17/02 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like in the form of fibres or filaments
Provided are a composite type heat insulator having an excellent heat insulating properties at high temperatures regardless of its thin body, and a method for producing the same. The composite type heat insulator comprises a first and a second cloths composed of silica fibers having a hydroxyl group; and a heat insulating layer sandwiched between the first and the second cloths. The heat insulating layer contains a silica aerogel and silica staple fibers having a fiber length of 0.5 to 5 mm. The heat insulating layer may optionally contain an infrared absorber and/or a film-forming inorganic binder.
F16L 59/02 - Shape or form of insulating materials, with or without coverings integral with the insulating materials
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 9/04 - Layered products essentially comprising a particular substance not covered by groups comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance
5.
COMPOSITE INSULATION MATERIAL AND MANUFACTURING METHOD THEREFOR
Provided are a composite insulation material which is thin but has excellent insulation properties at high temperatures, and a manufacturing method therefor. The insulation material comprises: first and second base fabrics configured of a group of silica fibers having hydroxyl groups; and an insulation layer including a silica aerogel interposed between the first base fabric and the second base fabric, wherein the insulation layer includes short silica fibers having a fiber length of 0.5-5 mm and the silica aerogel. The insulation layer may include, if desired, an infrared absorber and a film-forming inorganic binder.
Disclosed is a heat insulator comprising a substrate comprising of a bulk of silica-based inorganic fiber containing a hydroxyl group; a metallic or ceramic infrared mediator held on at least a part of one surface of the substrate; and a silica cured product holding the infrared mediator on/in the substrate. As the infrared mediator, a metal foil or a ceramic particle may be used. This heat insulator exhibits excellent heat insulating performance in a high temperature range of 600° C. or more, and can be molded into a three-dimensional shape which can be directly mounted to a structure.
E04B 1/76 - Heat, sound or noise insulation, absorption, or reflectionOther building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
B32B 15/14 - Layered products essentially comprising metal next to a fibrous or filamentary layer
B32B 17/02 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like in the form of fibres or filaments
Disclosed is a heat insulating material comprising: a substrate composed of an aggregate of silica-based inorganic fibers having a hydroxyl group; an infrared responsive material made of a metal or ceramic, which is fixed/retained on at least a part of the surface layer of the substrate; and a silica cured product that fixes/retains the infrared responsive material on the substrate. As the infrared responsive material, a metal foil or ceramic particles can be used. This heat insulating material for high temperatures has excellent heat insulating properties in a high temperature range of 600°C or higher, and can be shaped into a three-dimensional object that can be directly attached to a structure for construction.
A thin and lightweight refractory insulating sheet comprising a refractory bag and a layered type thermal insulator in the bag is disclosed. The layered type thermal insulator comprises a thermal energy consumption layer, a reflector and a graphite layer, and can efficiently attenuate thermal energy by conducting the thermal energy in all directions of the plane even when locally heated, and utilizing the thermal energy for vaporization of the water generated from the thermal energy consumption layer.
H01B 7/29 - Protection against damage caused by external factors, e.g. sheaths or armouring by extremes of temperature or by flame
H01B 3/12 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of inorganic substances ceramics
B32B 17/02 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like in the form of fibres or filaments
B32B 33/00 - Layered products characterised by particular properties or particular surface features, e.g. particular surface coatingsLayered products designed for particular purposes not covered by another single class
9.
HEAT INSULATOR COMPOSITION, HEAT INSULATOR USING SAME, AND METHOD FOR MANUFACTURING HEAT INSULATOR
Provided are a moldable heat insulator composition, a heat insulator manufactured using the heat insulator composition, and a method for manufacturing the heat insulator, in which the high heat-insulation properties of silica aerogel make it possible to provide a heat insulator compatible with high-temperature thermal components as well as heat-resistant and thermally insulated devices having complex shapes. The present invention discloses a moldable heat insulator composition containing (A) a silica aerogel having porosity of at least 60%, (B) a ceramic starting-material liquid (hydrothermal synthesis starting-material liquid) that can form crystals via a hydrothermal reaction, (C) a surfactant, and (D) a reinforcing fiber.
C04B 24/32 - Polyethers, e.g. alkylphenol polyglycolether
C04B 28/18 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
C04B 35/80 - Fibres, filaments, whiskers, platelets, or the like
C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof
F16L 59/02 - Shape or form of insulating materials, with or without coverings integral with the insulating materials
Provided is a vacuum insulation material that has a stable quality, that is capable of maintaining initial thermal insulation properties over a long period of time, and that is capable of maintaining the form of a sheet even when the use of a binder, which causes the problem of volatilization in a vacuum state, is avoided. The vacuum insulation material according to the present invention includes a laminated body (10) of inorganic fiber sheets (1), and an enveloping member (11) that vacuum-seals the laminated body. In the inorganic fiber sheets, inorganic fiber strand groups that contain curved inorganic fiber strands having a cut length (L) of between 3mm and 12mm are randomly distributed, and at least some of the inorganic fiber strand groups are engaged with each other.
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