Disaster prevention sheets and covers

Abstract

Disaster prevention sheet and fire prevention device capable of suitably suppressing fires caused by battery ignition Provide disaster cover. The disaster prevention sheet 10 has a sheet portion made of a fabric material that can withstand a predetermined high temperature. and a pad member 12 containing a fire extinguishing agent for use in the event of a battery fire. The pad member 12 is provided on the outer periphery of the member 11 closer to the outer edge than the pad installation portion. The peripheral hole 14 is provided so that the string-like member 13 can be inserted therethrough. By pulling a part of the string-like member 13, the outer peripheral portion of the sheet member 11 is gradually shortened. The sheet member 11 is configured so that it can be deformed into a bag shape by shrinking it.

Description

[Technical Field]

[0001] This invention is a disaster prevention sheet and disaster prevention cover that can suppress fires caused by battery ignition. Regarding the bar. [Background technology]

[0002] In recent years, lithium-ion batteries have become increasingly popular indoors and in enclosed spaces (especially airplanes and bullet trains). There have been many fire accidents caused by batteries catching fire. Techniques for preventing fires have been proposed (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. WO2023 / 199012 Summary of the Invention [Problem to be solved by the invention]

[0004] However, even if we prevent battery fires, batteries can still catch fire. In this case, it may be necessary to use a nearby fire extinguisher to suppress the fire. However, it is often difficult to extinguish a battery fire with a regular fire extinguisher. It is likely that a large number of fire extinguishers will be required to suppress the fire. The use of fire extinguishers can cause air pollution and respiratory problems due to the release of harmful and toxic substances. Therefore, there is room for improvement in the technology used to prevent battery fires. There was a possibility.

[0005] The present invention has been made to solve the above-mentioned problems, and is intended to prevent battery fires. The object of the present invention is to provide a disaster prevention sheet and a disaster prevention cover that can effectively suppress fires that occur due to fires. Let's say. [Means for solving the problem]

[0006] In order to solve the above problems, the disaster prevention sheet of this invention is A sheet member that is made of a fabric material that can withstand a predetermined high temperature and can be spread out flat. and, The sheet member is formed in a thin plate shape with an outer diameter smaller than that of the sheet member, and is used to extinguish a fire in the battery. a pad member containing a pyrotechnic agent; The sheet member has an outer periphery closer to the outer edge than the pad installation portion on which the pad member can be installed. a peripheral hole through which an elongated string-like member can be inserted is provided on the side; The string-like member is inserted through the peripheral hole and a part of the string-like member is pulled. The outer peripheral portion of the sheet member is gradually shortened to deform the sheet member into a bag shape. is possible, The pad member is placed on the pad placement portion of the sheet member, and a generator is placed on the pad member. If a flaming battery or a flaming battery comes into contact with the housing that contains it and then operating the string-shaped member to extinguish the ignited battery or the container. The sheet member is configured to be able to encase the

[0007] In the disaster prevention sheet of the present invention, the sheet member is The pad member is formed into an outer shape having a length approximately three times or more than the size thereof. When the sheet member is installed in the installation section, the portions located on both sides of the sheet member are folded. The sheet may be formed to a size that allows it to be folded into thirds.

[0008] The disaster prevention cover of this invention is, It is made of a fabric material that can withstand a specified high temperature and is used in the shape of a box with one side open. a cover member that can The fire extinguishing agent is contained in the battery and is brought into contact with a part of the inner surface of the cover member. and a thin plate-like pad member to be installed, The pad member is placed inside the cover member, and the battery is placed on top of the battery. The cover member is placed over the housing containing the ignited battery. The device is characterized by being configured to be able to cover the outside of a battery that has caught fire. [Effects of the Invention]

[0009] According to the fire prevention sheet and fire prevention cover of the present invention, the pad member containing the fire extinguishing agent is The battery or a bag or suitcase that contains it is placed in contact with the battery. The battery and the container can be covered with a fabric that can withstand a certain high temperature. This allows the fire extinguishing agent contained in the battery pack to easily act on the ignition area caused by the battery, thereby suppressing the ignition. It also makes it easier to prevent the fire from spreading to the surrounding area. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram showing a disaster prevention sheet of the present invention. [Figure 2] 10 is a diagram showing the storage form of the disaster prevention sheet and the disaster prevention cover. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1(A), the sheet member 11, the pad member 12, and the string-like member 13 are included. By using the string-like member 13, the pad member 12 is brought into contact with the ignited battery. It is configured so that it can be wrapped around the body.

[0012] The sheet member 11 can be made of a flame-retardant cloth that can withstand high temperatures. The sheet member 11 is preferably made of a fiber sheet that is easily deformable. For example, a cloth that can withstand high temperatures of 1000°C can be used, such as glass fiber cloth or silicone. Ceramic cloth, ceramic fiber cloth, etc. can be used.

[0013] The size of the sheet member 11 is set to various sizes corresponding to the size of the battery that may ignite. However, for example, if the battery is stored inside a small bag or suitcase, Considering the possibility of fire, the shape should be a square with a side of approximately 1.5 m or a circle with a diameter of approximately 2 m. In this case, the bag or suitcase can be left on the sheet member 11. The sheet member 11 can encase the entire bag or the like.

[0014] The sheet member 11 has peripheral holes 14 formed at its outer edge for inserting the string-like members 13 therethrough. The peripheral holes 14 are arranged at approximately regular intervals (for example, The peripheral holes 14 are formed so as to be scattered at intervals of about 20 cm, and each peripheral hole 14 is provided with a metal The peripheral hole 14 can be provided with a heat-resistant reinforcing ring as the string-shaped member 13. A rope or the like having the above-mentioned holes is inserted along the outer periphery of the sheet member 11 in order to fill all the peripheral hole portions 1 4, and then both ends of the string-like member 13 are bound (or glued) together. The peripheral hole 14 can be formed by providing a reinforcing ring such as a grommet in a through hole through which the string-like member 13 can be inserted. Alternatively, a continuous elongated hole portion may be provided along the outer edge of the sheet member 11. may be formed.

[0015] The sheet member 11 is configured such that the outer periphery thereof is formed by pulling out the string-like member 13 from the sheet member 11. As a result, as shown in Figure 1(B), The sheet member 11 formed in the shape of a single sheet can be easily deformed into a bag shape to hold the battery BT The bag BG can be wrapped around the container.

[0016] The pad member 12 is formed in a thin plate shape with an outer shape smaller than that of the sheet member 11. The fire extinguishing agent is, for example, a lithium ion battery. This allows the use of fire extinguishing agents that are compatible with lithium ion fires, and It can be used to extinguish a fire by contacting or placing it close to the battery, and also to prevent re-ignition.

[0017] The pad member 12 is made of a thin plate-like case body that contains not only the fire extinguishing agent but also the base material. It is sufficient if it can be combined with other materials such as a sheet body to form a thin plate. The agent may be in the form of a solid, a gel, or a liquid, or a combination of these. In this example, a fire-extinguishing gel layer 23 formed of a gel-type fire-extinguishing agent in a sheet shape is used. Furthermore, as a fire extinguishing agent, it does not contain any substances that are harmful to the human body or toxic substances, and does not contain heavy metals after use. It is preferable to use a material that does not produce any environmentally hazardous substances.

[0018] The pad member 12 vaporizes at a certain temperature (for example, 120 degrees) or higher, and burns the battery. Fig. 1(C) shows the structure of the fire extinguishing agent discharged from the AA line in Fig. 1(A). For example, as shown in FIG. 1(C), the pad member 12 has a four-layer structure. The mesh layer is placed on the one side (surface) that is in contact with or close to the battery BT. 21, an inner cover layer 22, a fire-extinguishing gel layer 23, and an outer cover layer 24. This can be done.

[0019] The mesh layer 21 contacts the heated battery and transfers heat to the adjacent battery through rapid heat conduction. The mesh layer 21 is a layer for melting and destroying the inner cover layer 22. However, it serves to induce the rapid release of the fire extinguishing gel layer 23 containing the fire extinguishing agent. The mesh layer 21 is made of metal or inorganic material such as ceramic or glass with high thermal conductivity. The mesh layer 21 can be configured as follows. The thermal conductivity of the mesh layer 21 is 10 W / m·K or more. It is preferable that the thermal conductivity is 25 W / m·K or more, and more preferable that the thermal conductivity is 25 W / m·K or more.

[0020] The mesh layer 21 is made of rod-shaped materials woven into a lattice, or a plate-shaped material with holes formed therein. In short, the area of ​​the hole portion is larger than the actual portion that constitutes the lattice. The area of ​​the holes is preferably 60% or more, particularly 80% or more of the entire mesh layer 21. If the area ratio of the holes is too small, the fire-extinguishing gel layer 23 may be trapped. Because.

[0021] There is no particular limitation on the mesh size of the mesh layer 21, but the size of the holes is preferably 1 square meter in area. It is preferable that the hole size is more than 100 square centimeters and less than 100 square centimeters. The gel layer 21 itself will inhibit the release of the fire-extinguishing gel layer 23, and if the hole size is too large, Since the side cover layer 22 is not melted sufficiently, the fire-extinguishing gel layer 23 is not sufficiently released. Therefore, it is preferable to select an appropriate size through experiments with various sizes.

[0022] The inner cover layer 22 is made of a polymer film. The inner cover layer 22 is a layer for protecting the hydrogel. When the internal temperature rises to 100 to 300°C, it melts and releases the fire extinguishing gel layer 23. vinegar.

[0023] The polymer film used for the inner cover layer 22 is not particularly limited, and may be a general resin film. The inner cover layer 22 is made of a resin material that melts quickly. Therefore, thermoplastic resins are particularly preferred. For example, polyethylene, polypropylene, polychlorinated Vinyl, polystyrene, acrylic resin, nylon resin, polyamide resin, polycarbonate Examples include polyethylene terephthalate, ... The polymer film may have a single layer structure, or may have multiple layers to adjust the strength and melting property. It may also be a multi-layer material in which several types of films are laminated together.

[0024] The fire-extinguishing gel layer 23 is made of a hydrogel-based gelling agent (0.2 to 5 0%) and water-based fire extinguishing agent, and is capable of absorbing flammable gases. The following configuration can be exemplified.

[0025] As the water-based fire extinguishing agent, one or more types of fire extinguishing agents are appropriately selected and used. Examples of chemical materials include NaHCO3, Na2CO3, and NaOH (sodium hydroxide). - Hydrogen carbonate fire extinguishing agents such as sodium hydrogen carbonate (SBC) and potassium hydrogen carbonate (KHCO3), Phosphate-based fire extinguishing agents such as Na3PO4 and NaH2PO4 (sodium hydroxide + phosphate) , H3BO3, borate-based fire extinguishing agents such as Na2B4O7 (borax), Na2SiO3, etc. silicate-based fire extinguishing agents, sulfate-based fire extinguishing agents such as Na2SO4 and MgSO4, Al(OH)3, Metal hydroxide fire extinguishing agents such as Mg(OH)2, and particulate fire extinguishing agents such as SiO2 and TiO2 , Na2SiO3-based intumescent inorganic fire extinguishing agents (such as water glass), etc.

[0026] There are no particular restrictions on the gelling agent, but those that melt when heated are preferably used. For example, agar, carrageenan, gelatin, sodium alginate, pectin, guar gum, etc. Any naturally occurring gelling agent, or carboxyvinyl polymer (polymeric acrylic acid), poly acrylamide, hydroxypropyl cellulose, hydroxyethyl cellulose, methyl Synthetic gelling agents such as cellulose may be used alone or in combination depending on the melting temperature. are used in combination.

[0027] The outer cover layer 24 is a layer for covering and protecting the outside of the fire-extinguishing gel layer 23. For example, a polymer film may be used. The fabric may be flame retardant or a different material may be used. It may be made of various sheet-like materials such as polymer films containing flame retardants. To be UL compliant means that the material can withstand a specified high temperature without burning. 94 / ISO 1210 / JIS K7201 / NFPA 701 It may also be possible to do so.

[0028] It is also preferred that the melting temperature of the outer cover layer 24 be higher than that of the inner cover layer 22 . As a result, even when the fire-extinguishing gel layer 23 is released from the inner cover layer 22, the outer cover The shape of the fire-extinguishing gel layer 23 near the outside where the layer 24 is provided is easily maintained, and the fire-extinguishing gel can be maintained in the proper position.

[0029] The size of the padding 12 is determined based on the size of the bag where the fire occurred due to the battery ignition. It is preferable that the size be such that it can be placed over the The pad member 12 can be configured as a pad having a thickness of approximately 7 mm. If necessary, two or more sheets can be combined to form a large disaster prevention sheet 10.

[0030] In addition, when compared with the size of the sheet member 11, the length of each side of the pad member 12 is approximately It is preferable to configure the pad member 12 so that the thickness is about one third of the original thickness. Storage form of the disaster prevention sheet 10 when the length of one side is about one-third of the length of the sheet member 11 When storing the disaster prevention sheet 10, the center portion of the sheet member 11 is packed. The pad member 12 is placed so as to form the pad installation portion 15, and the sheet member 11 is folded in three. As a result, the disaster prevention sheet 10 can be made to have approximately the same size as the pad member 12. This allows for easy storage and transportation. The part on the surface of the sheet member 11 where the pad member 12 is installed corresponds to the part. The pad member 12 may be fixed to the installation portion 15 as an integral part, or may be provided as a separate, movable part. It may also be configured to be installed with the above-mentioned components.

[0031] The sheet member 11 is also suitable for protecting the battery from ignition and the battery container. It can also be used by placing it over a bag or suitcase. After a certain time has passed, the battery and the container that have been put out of fire can be wrapped in the sheet member 11, and they can be safely can be completely processed.

[0032] In addition, the sheet member 11 and the pad member 12 may be integrated with each other by means of an adhesive or other integration means. Alternatively, one side of the double-sided tape may be attached to the pad member 12, and the user may If necessary, the pad member 12 can be attached to a part of the sheet member 11 using double-sided tape. That's fine.

[0033] Next, the disaster prevention cover 30 will be described. 1 is a diagram showing the structure of the disaster prevention sheet 10. The disaster prevention sheet 10 shown in FIG. 1 has a cloth portion ( The sheet member 11) is formed, whereas the disaster prevention cover 30 has a box-shaped fabric portion (for example, The difference is that it is formed in a rectangular parallelepiped shape, and other configurations are the same as the disaster prevention cover 3 described above. It can be configured in the same way as 0.

[0034] The disaster prevention cover 30 includes a cover member 31 and a pad member 32. 1 has a rectangular bottom surface and a cylindrical side surface with a substantially rectangular opening. For example, It can be configured to be a box-shaped structure with a width of 60 cm and a height of 40 cm. The disaster cover 30 is made of a soft fabric material that can be folded, making it easy to store. The pad member 32 can be sized to fit on the bottom surface. For example, the size may be approximately the same as the bottom surface, or may be smaller than the bottom surface.

[0035] The cover member 31 can be the same as the sheet member 11 of the disaster prevention sheet 10. The outer shape is formed in advance so that it will unfold into a box-like shape, and some of the peripheral parts are joined together. The cover member 31 can be made of the same material as the sheet member 11 of the disaster prevention sheet 10. The peripheral hole through which the string-like member 13 can be inserted is provided in the peripheral portion forming the opening. Alternatively, the peripheral hole portion may be omitted and the string-like member 13 may not be used.

[0036] FIG. 2(C) shows how to use the disaster prevention cover 30. The disaster prevention cover 30 is placed on the suitcase SC as a container from above. As shown by the dashed line in Figure 2(C), the disaster prevention sheet can be used as a In this case, the disaster prevention cover 30 can be used in combination with the toilet 10. The battery and the container are placed on the sheet member 11 and the pad member 12 of the sheet 10. Then, cover the battery etc. from above with the disaster prevention cover 30, and then remove the string-like Pull the member 13 to remove the battery and other items from the disaster prevention sheet 10 including the disaster prevention cover 30. The size of the disaster prevention sheet 10 is higher than the top end of the disaster prevention cover 30. It is preferable to set the size so that the entire outer edge portion can be raised to the position. The length from the pad installation portion 15 to the outer edge is sufficiently greater than the height from the bottom surface of the disaster cover 30 to the opening. It is preferable that it be long and large enough to completely enclose the area.

[0037] As described above, the disaster prevention sheet 10 and the disaster prevention cover 30 are pad members containing a fire extinguishing agent. 12, 32, and the battery that has caught fire or the bag or suitcase that contains it. The battery and the housing are covered with a cloth that can withstand a specified high temperature. Therefore, in the event that the battery catches fire, the battery contained in the pad members 12 and 32 This allows the fire extinguishing agent contained in the battery to easily act on the ignition part of the battery, suppressing the fire and preventing the fire from spreading to the surrounding area. It is also possible to easily suppress the spread of the

[0038] The present invention is not limited to the above-described embodiment, and may be modified within the scope of the present invention. It is easy to imagine that various improvements and modifications are possible within the scope of the present invention. For example, The present invention may be modified and implemented as described above.

[0039] For example, the size and shape of the disaster prevention sheet 10 and the disaster prevention cover 30 may be different from those exemplified in the above embodiment. For example, the disaster prevention cover 30 may have a bottom surface that is not rectangular. It may also be configured as a circular, oval, elliptical, hexagonal, or other box shape. Other shapes such as a bag shape without a bottom may also be used. [Industrial Applicability]

[0040] The disaster prevention sheet 10 and disaster prevention cover 30 of the present invention are suitable for use in places where a battery fire is anticipated. It can be stored nearby and used in case of a fire caused by a battery ignition. In transportation vehicles such as cars, buses, trains, and airplanes, in buildings such as buildings and houses, or in playgrounds By installing them in various places, such as in parks or outdoors, fires caused by battery ignition can be prevented. can be dealt with. [Explanation of symbols]

[0041] 10: Disaster prevention sheet 11: Sheet material 12: Pad material 13: String-like member 14: Peripheral hole 15: Pad installation area 30: Disaster prevention cover 31: Cover member 32: Pad material

Claims

1. A sheet member that is made of a fabric material that can withstand a predetermined high temperature and can be spread out flat. and, The sheet member is formed in a thin plate shape with an outer diameter smaller than that of the sheet member, and is used to extinguish a fire in the battery. a pad member containing a pyrotechnic agent; The sheet member has an outer periphery closer to the outer edge than the pad installation portion on which the pad member can be installed. a peripheral hole through which an elongated string-like member can be inserted is provided on the side; The string-like member is inserted through the peripheral hole and a part of the string-like member is pulled. The outer peripheral portion of the sheet member is gradually shortened to deform the sheet member into a bag shape. is possible, The pad member is placed on the pad placement portion of the sheet member, and a generator is placed on the pad member. If a flaming battery or a flaming battery comes into contact with the housing that contains it and then operating the string-shaped member to extinguish the ignited battery or the container. a disaster prevention system configured to be able to be wrapped in the sheet member. Route.

2. The sheet member is approximately three times larger than the pad member and the pad installation portion. The pad member is formed into a lengthy outer shape, and when the pad member is placed on the pad placement portion, The sheet member can be folded into three by folding the portions located on both sides of the sheet member.

2. The disaster prevention sheet according to claim 1, characterized in that it is formed in a size that can be easily removed.

3. It is made of a fabric material that can withstand a specified high temperature and is used in the shape of a box with one side open. a cover member that can The fire extinguishing agent is contained in the battery and is brought into contact with a part of the inner surface of the cover member. and a thin plate-like pad member to be installed, The pad member is placed inside the cover member, and the battery is placed on top of the battery. The cover member is placed over the housing containing the ignited battery. A disaster prevention device characterized in that it is configured to be able to cover the outside of a ignited battery. cover.

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