Battery fire prevention structure

Abstract

To provide a battery fire prevention structure capable of automatically suppressing the spread of a battery fire. [Solution] The battery fire prevention structure 100 has a shielding plate 30 made of charcoal, wood, or bamboo-derived tar provided on the inner wall surface of a container 20 in which multiple lithium-ion batteries 50 are installed, and covers the lithium-ion batteries 50 with the shielding plate 30, reducing the amount of oxygen supplied from the outside world and thereby suppressing the spread of a battery fire.

Description

[Technical field]

[0001] The present invention relates to a fire prevention structure for a battery. [Background technology]

[0002] 2. Description of the Related Art Recently, fire accidents involving batteries, particularly lithium ion batteries, have become a social problem, and various ideas have been devised to prevent fires involving lithium ion batteries. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2013-500801 [Patent Document 2] JP 2014-158508 A [Patent Document 3] Special table 2024-539847 publication Summary of the Invention [Problem to be solved by the invention]

[0004] However, the device shown in Patent Document 1 is a device for extinguishing a lithium-ion battery fire, and has the problem that the fire cannot be extinguished unless a fire extinguishing agent is sprayed, and there is a problem that a fire extinguishing system must be constructed to automatically suppress a lithium-ion battery fire. In addition, the device shown in Patent Document 2 is configured to provide a fire extinguishing device 30 to a storage device 10 that stores multiple lithium ion batteries 20, so there is still a problem that a fire extinguishing system must be constructed to automatically suppress a fire in the lithium ion battery. Also, in the invention shown in Patent Document 3, a fire-resistant retail product packaging, such as a sleeve, pouch, wrap, etc., capable of containing high-intensity fires for products such as lithium-ion batteries. The fire-resistant paper includes a kraft paper, preferably having a weight of 40 to 60 pounds per 3000 ft2, and a fire-resistant ink applied to each side of the kraft paper. The fire-resistant paper includes an acrylic resin, a dispersant, and at least one boron compound, and optionally, talc and a molybdate compound. The fire-resistant paper preferably converts the kraft paper into a non-flammable and heat-insulating material. However, there is a problem that the energy amount of lithium ions is high and it cannot respond to high-temperature fires.

[0005] The present invention has been made in consideration of the above, and an object of the present invention is to provide a battery fire prevention structure that can automatically suppress the spread of a battery fire. [Means for solving the problem]

[0006] The above objectives are: A battery fire prevention structure 10, 100 in which a battery body is surrounded by a shielding plate 3, 30 made of charcoal, wood, or bamboo-derived tar, and the amount of oxygen supplied to the battery body is reduced to suppress the spread of a battery fire. This is achieved by: In addition, the above objectives are: The above battery fire prevention structure 10, 100, wherein the charcoal is bamboo charcoal. This is achieved by: Effect of the Invention

[0007] According to the present invention, a battery fire prevention structure can be provided that can automatically suppress the spread of a battery fire. [Brief description of the drawings]

[0008] [Figure 1] 1 is an external perspective view of a battery fire protection structure 10 according to a first embodiment of the present invention; FIG. [Diagram 2]FIG. 1 is an exploded view of a battery fire protection structure 10 according to a first embodiment of the present invention. [Diagram 3] 2 is a cross-sectional view of a battery fire protection structure 100 according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The fire protection structure 10 for a battery according to a first embodiment of the present invention will be described with reference to FIGS.

[0010] FIG. 1 is an external perspective view of a fire protection structure 10 for a battery according to a first embodiment of the present invention, and FIG. 2 is an exploded view of the fire protection structure 10 for a battery according to the first embodiment of the present invention.

[0011] 1 and 2, a battery fire prevention structure 10 according to a first embodiment of the present invention is configured by attaching a shielding plate 3 made of charcoal, wood, or bamboo-derived tar to the inside of a battery case 1. The shielding plate 3 is provided to cover the battery body, and prevents oxygen from entering the battery body from the outside, thereby preventing the spread of a battery fire.

[0012] ≪Shielding plate 3≫ The shielding plate 3 is a plate-shaped member made of charcoal, wood, or bamboo-derived tar, but a plate-shaped member made of bamboo charcoal and bamboo-derived tar is more preferable. Bamboo charcoal has more holes than wood charcoal and can hold more than three times as much oxygen. In addition, mixing in bamboo-derived tar has the effect of significantly increasing the flash point of the bamboo charcoal. Therefore, since the bamboo charcoal does not ignite in the early stages of the battery, the bamboo charcoal can be used to prevent the spread of a battery fire by restricting the inflow of air.

[0013] <Tar derived from bamboo and wood> Tar derived from bamboo or wood is produced either from the liquid distilled from the smoke produced by burning bamboo or wood, or from the residue of burning bamboo or wood. Tar derived from bamboo or wood is made of materials carbonized at high temperatures, which increases its fire resistance.

[0014] In addition, in this embodiment, the shielding plate 3 is provided inside the battery case 1, but the battery case 1 itself may be made of bamboo charcoal / bamboo or tar derived from wood.

[0015] 3 is a schematic diagram of a battery fire protection structure 100 according to a second embodiment of the present invention. The battery fire protection structure 100 is a fire protection structure applicable to high-capacity battery facilities having multiple lithium-ion batteries.

[0016] As shown in FIG. 3, a shielding plate 30 is provided on the inner wall surface of a container 20 in which a plurality of lithium ion batteries 50 are provided, and the lithium ion batteries 50 are covered by the shielding plate 30.

[0017] The shielding plate 30 is made of the same material as the shielding plate 3. By covering the multiple lithium ion batteries 50 with the shielding plate 30, the supply of oxygen from the outside world can be blocked, making it possible to extinguish a fire in the lithium ion batteries 50 at an early stage.

[0018] By using the battery fire prevention structure 10, 100 according to this embodiment, the following effects are achieved. (a) It is possible to cut off the oxygen supply at the early stage of a battery fire, thereby preventing the battery fire from spreading. (i) Using bamboo charcoal makes effective use of unused resources. (u) Expanded use of bamboo can help reduce carbon dioxide emissions. [Explanation of symbols]

[0019] 10, 100 Battery fireproof structure 1 Battery case 3, 30 shielding plate 20 Container 50 Lithium-ion battery

Claims

1. A battery fire prevention structure in which the battery body is surrounded by a shielding plate made of charcoal, wood, or bamboo-derived tar, reducing the amount of oxygen supplied to the battery body and thereby suppressing the spread of a battery fire.

2. The battery fire prevention structure according to claim 1 , wherein the charcoal is bamboo charcoal.

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