WO2024101509A1

WO2024101509A1 - Tube for extinguishing vehicle fire

Info

Publication number: WO2024101509A1
Application number: PCT/KR2022/018537
Authority: WO
Inventors: 유경호
Original assignee: 주식회사 에스제이코퍼레이션
Priority date: 2022-11-11
Filing date: 2022-11-22
Publication date: 2024-05-16
Also published as: KR102577392B1

Abstract

A tube for extinguishing a vehicle fire, of the present invention, comprises: a tube body which has a first space in which fluid can be accommodated, and which is inflated when the fluid is injected into the first space; a first fluid discharge hole which is disposed in the tube body and which discharges, to a second space outside of the tube body, the fluid by means of hydraulic pressure generated in the first space; a fire blanket which is connected along one side of the tube body and which accommodates the fluid discharged to the second space; fire-extinguishing pipes, which are disposed at one side of the fire blanket, each have a third space in which fluid can be accommodated, and are inflated when the fluid is injected into the third spaces; and fire-extinguishing nozzles which are arranged at the fire-extinguishing pipes and which discharge the fluid to the second space by means of hydraulic pressure generated in the third spaces.

Description

Tube for vehicle fire suppression

The present invention relates to a tube for extinguishing vehicle fires.

An electric vehicle battery consists of hundreds to thousands of battery cells, the smallest unit, assembled in a pack to supply electricity to an electric vehicle. If the separator that separates the cathode and anode of a battery cell is torn due to a collision, a short circuit may occur, and the resulting heat and sparks may cause a fire.

Electric vehicle fires can cause battery thermal runaway, which is a phenomenon in which the battery pack is damaged and the temperature inside quickly rises to over 800°C, leading to chain ignition. There are cooling fire extinguishing methods, suffocating fire extinguishing cover methods, and suffocating fire extinguishing methods using foam extinguishing agents to extinguish vehicles. However, when a thermal runaway fire occurs in an electric vehicle, neither method extinguishes the fire quickly enough to be considered effective. can not do it.

On the other hand, when water was intensively poured into a battery adjacent to a battery in which thermal runaway occurred, a rapid drop in battery temperature was observed, and accordingly, a direct water injection method was introduced to suppress battery thermal runaway.

Meanwhile, lithium hexafluorophosphate (LiPF ₆ ) is mainly used as the electrolyte in lithium-ion batteries. When the battery overheats, the electrolyte evaporates and lithium hexafluorophosphate is discharged to the outside. Lithium hexafluorophosphate will explode if not ignited immediately, and water can act as an accelerant to accelerate the reaction. Therefore, pouring water directly into a battery that has experienced thermal runaway is an activity that reduces heat, but if a relatively small amount of water is injected, it can also act as a substance that promotes a reaction that intensifies the fire.

In the end, the most effective way to extinguish electric vehicle fires with water is to quickly lower the temperature by submerging the vehicle with overwhelming water, but due to the nature of the fire scene, it is difficult to install a structure to quickly submerge the vehicle.

The technical problem to be achieved by the present invention is to provide a vehicle fire suppression tube that can quickly form a water injection space that accommodates a large amount of fluid and rapidly lower the temperature by intensively pouring water into a vehicle in which thermal runaway has occurred. will be.

A tube for extinguishing vehicle fires according to an embodiment of the present invention includes a tube body that has a first space capable of accommodating fluid therein and expands when fluid is injected into the first space, and is disposed in the tube body. and a first fluid discharge hole that discharges fluid into a second space outside the tube body by hydraulic pressure generated in the first space, and is connected along one side of the tube body, and fluid discharged into the second space. A fire extinguishing bladder accommodating a fire extinguishing bladder, disposed on one side of the fire extinguishing bladder, forming a third space therein capable of receiving fluid, a digestive tube that expands when fluid is injected into the third space, and disposed in the digestive tube, , It may include a fire extinguishing nozzle that discharges fluid into the second space by hydraulic pressure generated in the third space.

Depending on the embodiment, the tube body is arranged so that one surface is in contact with the ground, and pressure may be applied toward the ground by fluid contained in the first space.

Depending on the embodiment, the tube for extinguishing a vehicle fire may further include a fluid barrier film whose one end is connected to the tube body and whose other end extends in a direction where the ground is located.

Depending on the embodiment, the second space may be a space surrounded by the tube body, the fire extinguishing bag, and the ground.

Depending on the embodiment, the vehicle fire suppression tube may be disposed on the tube body and may further include a second fluid discharge hole that discharges the fluid contained in the first space to the outside.

Depending on the embodiment, the tube for extinguishing a vehicle fire may further include a first fluid supply terminal formed in the tube body and allowing liquid supplied from the outside to pass through the first space.

Depending on the embodiment, the tube for extinguishing a vehicle fire may further include a second fluid supply terminal formed in the tube body to allow gas supplied from the outside to pass through the first space.

Depending on the embodiment, the vehicle fire suppression tube may further include a third fluid supply terminal formed in the fire extinguishing foam and allowing fluid supplied from the outside to pass through the third space.

Depending on the embodiment, the tube body, the digestive vesicle, and the digestive tract may be made of a silicone material that can withstand high temperatures of 800°C or higher.

Depending on the embodiment, the tube body is made of shape memory polymers and can be restored to a donut shape at a preset temperature or higher.

According to the vehicle fire suppression tube according to an embodiment of the present invention, it is possible to rapidly lower the temperature by intensively pouring water into a vehicle in which thermal runaway has occurred, and even if lithium hexafluorophosphate is discharged, it is quickly possible by the fluid supplied in large quantities. Fires can be extinguished.

1 is a perspective view of a tube for extinguishing a vehicle fire according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line II' of FIG. 1.

Figure 3 is a plan view of a tube for extinguishing a vehicle fire according to an embodiment of the present invention.

Figure 4 is a bottom view of a tube for extinguishing a vehicle fire according to an embodiment of the present invention.

Figure 5 is a diagram for explaining first to third fluid supply terminals according to an embodiment of the present invention.

Figure 6 is a diagram for explaining a method for storing a tube for extinguishing a vehicle fire according to an embodiment of the present invention.

Figure 7 is a diagram for explaining a method of using a tube for extinguishing a vehicle fire according to an embodiment of the present invention.

Figures 8 and 9 are diagrams for explaining a method of extinguishing a fire using the vehicle fire suppression tube of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to provide a general understanding of the technical field to which the present invention pertains. It is provided to fully inform the skilled person of the scope of the present invention, and the present invention is only defined by the scope of the claims.

The terminology used herein is for describing embodiments and is not intended to limit the invention. As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other elements in addition to the mentioned elements. Like reference numerals refer to like elements throughout the specification, and “and/or” includes each and every combination of one or more of the referenced elements. Although “first”, “second”, etc. are used to describe various components, these components are of course not limited by these terms. These terms are merely used to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may also be a second component within the technical spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless clearly specifically defined.

Figure 1 is a perspective view of a tube for extinguishing a vehicle fire according to an embodiment of the present invention, Figure 2 is a cross-sectional view taken along line II' of Figure 1, and Figure 3 is a plan view of a tube for suppressing a vehicle fire according to an embodiment of the present invention. , FIG. 4 is a bottom view of a tube for extinguishing a vehicle fire according to an embodiment of the present invention, and FIG. 5 is a view for explaining first to third fluid supply terminals according to an embodiment of the present invention.

Referring to Figures 1 to 4, the vehicle fire suppression tube 100 according to an embodiment of the present invention provides a water injection space for extinguishing a fire in a vehicle experiencing thermal runaway, and uses a fluid contained within the tube. The fluid contained in the pouring space can be kept intact.

The vehicle fire suppression tube 100 includes a tube body 110, first to third fluid supply terminals 111 to 113, first and second

fluid discharge holes

114 and 115, a fire extinguisher 120, Includes a fire extinguishing nozzle 121 and a fire extinguishing cloth 130.

The tube body 110 has a first space (AR1) formed therein that can accommodate fluid, and can be expanded when fluid is injected into the first space (AR1) through the first fluid supply terminal 111. . The tube body 110 is expanded by the fluid and disposed so that one surface is in contact with the ground GN, and the weight of the fluid contained in the first space AR1 applies pressure in the direction of the ground GN to press the tube body 110. It can be stably fixed on the ground (GN).

The tube body 110 is made of a silicon material that can withstand high temperatures of 800°C or higher, and the thickness of the tube body 110 may be thicker in certain areas that are directly in contact with the heat of the vehicle than other areas.

According to another embodiment, the tube body 110 is made of shape memory polymers (shape memory polymers, SMPs), and can be restored to a donut shape at a preset temperature or higher in response to heat. The shape memory effect (SME: Shape Memory Effect) is a phenomenon in which the shape remembered at a certain temperature is transformed into a completely different shape by applying force and then immediately returns to its original shape when heated. Shape memory polymers are permanent. It has the ability to remember its shape and can be restored to its original state by heat.

The vehicle fire suppression tube 100 of the present invention is made of a shape memory polymer and is manufactured in a donut shape with a first space AR1 formed. The donut shape is released below the reference temperature, and the donut shape is released above the reference temperature. The shape can be restored. Therefore, when heat is no longer provided to the vehicle fire suppression tube 100, the user can remove the fluid stored inside the vehicle fire suppression tube 100 and then fold or roll it and store it.

The first and second

fluid supply terminals

111 and 112 are disposed on the tube body 110, are coupled to a fluid source such as a fire hose, and allow fluid supplied from the outside to pass into the first space AR1. You can.

According to the embodiment, the first fluid supply terminal 111 is connected to the first fire hose (HO1) and passes the liquid supplied from the outside into the first space (AR1), and the second fluid supply terminal 112 is connected to the first fire hose (HO1) and passes the liquid supplied from the outside into the first space (AR1). It is connected to the injection hose (HO2) so that gas supplied from the outside can pass through the first space (AR1).

If only liquid such as water or digestive juice is injected into the tube body 110, the expansion speed of the tube body 110 may be relatively slow. Therefore, the vehicle fire suppression tube 100 rapidly expands the tube body 110 by injecting gas and liquid into the tube body 110 at the same time, then stops supplying the gas and continuously supplies the liquid to fill the first space. (AR1) can be controlled to be smoothly filled with liquid.

The first fluid discharge hole 114 is disposed in the tube body 110, and can discharge fluid into the second space AR2, which is outside the tube body 110, by hydraulic pressure generated in the first space AR1. . Here, the second space AR2 refers to a space closed from the outside and surrounded by the expanded tube body 110 in contact with the ground GN, the fire extinguishing bag 130, and the ground GN.

The second fluid discharge hole 115 is disposed in the tube body 110 and can discharge the fluid contained in the first space AR1 to the outside rather than the second space AR2.

When extinguishing a vehicle fire, the first fluid discharge hole 114 is opened to discharge the fluid in the first space AR1 into the second space AR2, and the second fluid discharge hole 115 is closed to discharge the fluid in the first space AR1 ) It is possible to block the internal fluid from being discharged to the outside rather than to the second space (AR2).

On the other hand, in order to remove the fluid contained in the tube body 110 after the vehicle fire suppression is completed, the second fluid discharge hole 115 may be opened to discharge the fluid in the first space AR1 to the outside.

The fire extinguishing bladder 130 is connected along one side of the tube body 110 and can accommodate fluid discharged to the second space AR2, and the digestive tube 120 is disposed on one side of the fire extinguishing bladder 130 A third space AR3 capable of accommodating fluid is formed and may expand when fluid is injected into the third space AR3. The digestive vesicle 130 and the digestive tract 120, like the tube body 110, may be made of a silicone material that can withstand high temperatures of 800°C or higher.

The third fluid supply terminal 113 is formed in the fire extinguishing bag 130 to allow fluid supplied from the outside to pass through the third space AR3 of the digestive tract 120. For example, the third fluid supply terminal 113 is connected to the second fire hose HO3 to allow liquid supplied from the outside to pass through the third space AR3.

The fire extinguishing nozzle 121 is disposed in the fire extinguishing pipe 120 and can discharge fluid into the second space AR2 by hydraulic pressure generated in the third space AR3.

Meanwhile, the fluid supplied from the outside through the tube body 110 and the digestive tract 120 is used to absorb heat caused by a vehicle fire, and does not escape to the outside but stays in the second space AR2.

The vent 131 is used to prevent the water injection speed from being slowed down by the gas present in the second space AR2 when fluid is supplied to the second space AR2. The fire extinguisher 130 has a vent 131. ) is formed to allow the fluid in the second space AR2 to pass to the outside. That is, when fluid is inserted into the second space AR2 at high speed, the air present inside quickly escapes through the ventilation hole 131, and the space where the air was may be filled with liquid.

Additionally, the liquid filled in the second space AR2 may be discharged to the outside through the vent 131. In order to continuously absorb the heat of the vehicle, low-temperature fluid can be continuously supplied from the outside. Due to the convection phenomenon, the relatively high-temperature fluid is discharged to the outside through the vent 131, creating the second space AR2. Low temperature liquid can be introduced smoothly.

Meanwhile, the total cross-sectional area of the vent hole 131 is smaller than the cross-sectional area of the first fluid discharge hole 114, and the first fluid discharge hole 114 discharges a larger amount of fluid than the vent hole 131 during the same time. .

The vehicle fire suppression tube 100 may further include a fluid barrier film 140 whose one end is connected to the tube body 110 and whose other end extends in the direction where the ground GN is located.

When the second space AR2 is filled with fluid, the pressure for the fluid to escape to the outside may increase. In order to suppress this phenomenon, the fluid barrier film 140 may be arranged to extend from the tube body 110 in the direction where the second space AR2 is located and contact the ground GN, and allow liquids such as water and fire extinguishing fluid to flow. It can perform the function of suppressing the force trying to escape through the space between the ground (GN) and the tube body 110. Depending on the embodiment, the fluid barrier film 140 may be made of a high-rigidity rubber material.

Figure 6 is a diagram for explaining a method for storing a tube for extinguishing a vehicle fire according to an embodiment of the present invention, and Figure 7 is a diagram for explaining a method for using a tube for suppressing a vehicle fire according to an embodiment of the present invention. It is a drawing.

Referring to Figures 6 and 7, the vehicle fire suppression tube 100 according to an embodiment of the present invention is made of a synthetic polymer such as silicone, so it can be easily stored in a folded or crumpled state. The vehicle fire suppression tube 100 can be rolled up and stored in roll form using a winding roller (ROL). all.

In addition, the user (HU) can spread the vehicle fire suppression tube 100 to the vehicle while moving from one side of the vehicle (CAR) to the other side while holding the winding roller. At the same time, when fluid is rapidly supplied through the first to third fluid supply terminals 111 to 113, the vehicle fire suppression tube 100 is rapidly expanded by hydraulic pressure and can be quickly unfolded in the opposite direction from which it was rolled up.

According to the embodiment, the user arranges the side of the vehicle fire suppression tube 100 to face the rear or front of the fire vehicle, and then when fluid is supplied, the roll-shaped vehicle fire suppression tube 100 automatically As it expands, it can cover a burning vehicle. Accordingly, even if the user does not approach the fire vehicle in which thermal runaway occurred, the vehicle fire suppression tube 100 can safely cover the fire vehicle. Even if the vehicle fire suppression tube 100 does not completely cover the fire vehicle, the user may adjust the position of the vehicle fire suppression tube 100 by moving the winding roller (ROL).

According to another embodiment, even if the vehicle fire suppression tube 100 is stored in a folded state several times, like the vehicle fire suppression tube 100 wound in a roll form, when fluid is supplied, it automatically expands and covers the fire vehicle. You can. In this case, the fire can be extinguished by throwing the vehicle fire suppression tube 100 onto the fire vehicle and then supplying fluid.

Referring to Figures 8 and 9, the vehicle fire suppression tube 100 injects air into the first and second fire hoses (HO1 and HO3) through the first to third fluid supply terminals (111 to 113). It is connected to a hose (HO2) and can be expanded by fluid supplied from the outside.

Liquid for extinguishing a vehicle fire is injected into the fire extinguishing tube 120, and gas and liquid are simultaneously injected into the tube body 110 for rapid expansion, and only the liquid is injected after a certain period of time.

The fluid injected into the first space (AR1) of the tube body 110 is discharged by hydraulic pressure into the second space (AR2) outside the tube body 110, and is injected into the third space (AR3) of the digestive tract 120. The liquid is also discharged into the second space AR2, which is outside the digestive tract 120, by hydraulic pressure.

A vehicle in which a fire occurs is located in the second space AR2, and the second space AR2 is filled with fluid discharged from the fire extinguishing tube 120 and the tube body 110. Since the second space (AR2) is a closed space with the outside surrounded by the tube body 110, the ground (GN), and the fire extinguisher 130, the fluid (WAT) stays in the second space (AR2) and is used in the vehicle. It is used to extinguish fires.

The tube body 110 accommodates a large amount of fluid, and the tube body 110 expanded by the fluid applies pressure plus the weight of the fluid toward the ground GN, so that it is in close contact with the ground GN, and the tube body 110 is in close contact with the ground GN. As 110 and the ground GN come into close contact, fluid cannot escape into the space between the ground GN and the tube body 110.

Since the top of the vehicle is covered with fire extinguishing foam 130, the fluid located in the second space AR2 is blocked by the fire extinguishing foam 130 and cannot escape to the outside, and only a small amount of fluid is contained in the fire extinguishing foam 130. It can escape through the vent 131 formed in .

In addition, the vehicle fire suppression tube 100 is provided with a fluid barrier film 140, one end of which is connected to the tube body 110 and the other end extending in the direction where the ground GN is located, and the fluid barrier film 140 is used to block the fluid. It suppresses the force trying to escape through the space between the ground (GN) and the tube body 110.

In this way, the second space AR2 can stably accommodate fluid for a long time due to the closed environment surrounded by the tube body 110, the fire extinguisher 130, and the ground GN.

Therefore, the vehicle fire suppression tube 100 according to an embodiment of the present invention is capable of rapidly lowering the temperature by intensively pouring water into a vehicle (CAR) in which thermal runaway has occurred, and even if lithium hexafluorophosphate is discharged, it can be produced in large quantities. The fire can be quickly extinguished by the supplied fluid.

Although the embodiments of the present invention have been described above, it is understood that those skilled in the art can make various modifications without departing from the scope of the claims of the present invention.

According to the present invention, it is possible to rapidly lower the temperature by intensively pouring water into a vehicle in which thermal runaway has occurred, and even if lithium hexafluorophosphate is discharged, the fire can be quickly extinguished by the fluid supplied in large quantities.

Claims

a tube body having a first space therein capable of accommodating fluid and expanding when fluid is injected into the first space;

a first fluid discharge hole disposed in the tube body and discharging fluid into a second space outside the tube body by hydraulic pressure generated in the first space;

a fire extinguisher connected along one side of the tube body and accommodating fluid discharged into the second space;

a digestive tract disposed on one side of the digestive vesicle, forming a third space therein capable of accommodating fluid, and expanding when fluid is injected into the third space; and

A tube for extinguishing a vehicle fire, including a fire extinguishing nozzle disposed in the fire extinguishing pipe and discharging fluid into the second space by hydraulic pressure generated in the third space.
According to paragraph 1,

A tube for extinguishing a vehicle fire, wherein the tube body is disposed so that one surface is in contact with the ground, and exerts pressure in the direction of the ground by fluid contained in the first space.
According to paragraph 2,

A tube for extinguishing a vehicle fire, further comprising a fluid barrier film whose one end is connected to the tube body and whose other end extends in the direction in which the ground is located.
According to paragraph 1,

The second space is a tube for extinguishing a vehicle fire, wherein the second space is a space surrounded by the tube body, the fire extinguisher, and the ground.
According to paragraph 1,

A tube for extinguishing a vehicle fire, further comprising a second fluid discharge hole disposed in the tube body and discharging the fluid contained in the first space to the outside.
According to paragraph 1,

A tube for extinguishing a vehicle fire, further comprising a first fluid supply terminal formed on the tube body to allow liquid supplied from the outside to pass through the first space.
According to clause 6,

A tube for extinguishing a vehicle fire, further comprising a second fluid supply terminal formed on the tube body and allowing gas supplied from the outside to pass through the first space.
According to paragraph 1,

A tube for extinguishing a vehicle fire, further comprising a third fluid supply terminal formed in the fire extinguishing foam and allowing fluid supplied from the outside to pass through the third space.
According to paragraph 1,

A tube for extinguishing a vehicle fire, wherein the tube body, the fire extinguisher, and the fire extinguisher are made of silicone material that can withstand high temperatures of 800°C or higher.
According to paragraph 1,

The tube body is made of shape memory polymers, and is a tube for extinguishing vehicle fires that is restored to a donut shape above a preset temperature.