Fire extinguishing device for lithium ion battery

Abstract

The fire extinguishing device of the present invention comprises: a fire extinguisher comprising a cylinder for filling a fire extinguishing agent, a pressure gauge for measuring the pressure of the fire extinguishing agent in the cylinder, a valve for controlling the discharge of the fire extinguishing agent, and a hose having one end connected to the valve; the first connecting part is connected with the other end of the hose; and a pipe member which can be coupled to and separated from the first connection member and is used for spraying the fire extinguishing agent. The pipe part comprises a second connecting part and a second connecting part, the second connecting part comprises a first combination part and an orifice plate, the first combination part and the first connecting part are fastened, and the orifice plate and the first combination part are formed into a whole; and a tube part, one end of which is connected to the second connection member, the orifice plate delaying the injection time of the fire extinguishing agent by controlling the release pressure of the fire extinguishing agent.

Description

TECHNICAL FIELD

[0001] The present application relates to a portable fire extinguishing device that can quickly extinguish a fire at an early stage of a fire occurring in a device or facility in which a lithium ion battery is installed. BACKGROUND

[0002] Recently, as the demand for renewable energy is increasing, technologies applying an energy storage system (ESS) are being continuously developed in order to store energy in advance and use it at a desired time period. The energy storage system mainly uses a lithium ion battery having high energy density and efficiency as an energy storage source, and is composed of a plurality of battery modules connected in series or in parallel and a plurality of battery clusters stacked with the modules.

[0003] However, since the lithium ion battery uses a flammable electrolyte, it is not only sensitive to temperature, but also can have internal electrode short circuiting due to capacity reduction at over-discharge or instability at over-charge, and can have explosion and fire due to external impact, thus, there is a problem of threatening system safety.

[0004] In particular, in the case of a fire, the lithium ion battery can have a thermal runaway phenomenon in which an oxidizing positive electrode and a reducing negative electrode are in contact and rapidly heat themselves due to rupture of a polymer separation membrane, and thus, can cause fire propagation to adjacent battery cells, and can cause continuous reignition due to fire propagation, however, the existing fire extinguisher has a problem in that the injection time of the extinguishing agent is short, and cannot maintain the extinguishing effect required to completely extinguish the fire in order to prevent thermal runaway, fire propagation, and reignition.

[0005] Also, since the energy storage system has a structure in which lithium ion batteries are densely arranged inside a sealed structure housing, the existing fire extinguisher has a problem in that the extinguishing agent cannot reach the lithium ion battery where the fire occurs. SUMMARY

[0006] An object of the present application is to provide a fire extinguishing device that increases the injection time of an extinguishing agent in order to maintain the cooling effect required for initial fire extinguishing of a lithium ion battery by a pipe member that is simply and quickly connected to a hose of a fire extinguisher while reducing the release pressure of the extinguishing agent.

[0007] Still another object of the present application is to provide a fire extinguishing device that can directly inject an extinguishing agent to a battery cell that is a cause of a fire through a pipe member that is not bent along an extension direction and easily reaches the battery cell where the fire occurs by covering a cluster cover opening of a battery module.

[0008] Another object of the present application is to provide a fire extinguishing apparatus in which anyone can easily spray a fire extinguishing agent to a battery cell on fire through a pipe member that allows a user to easily recognize a spraying direction of the fire extinguishing agent.

[0009] Still another object of the present application is to provide a fire extinguishing apparatus in which a length of an extension hose can be quickly extended as needed, and the fire extinguishing agent can be directly sprayed to a corresponding battery cell while maintaining a safe distance even at a location far from the battery cell on fire, the extension hose being simply and quickly connected to a hose of a fire extinguisher and a pipe member.

[0010] To achieve the objects, a fire extinguishing apparatus according to the present application can include a fire extinguisher including a cylinder for filling a fire extinguishing agent, a pressure gauge for measuring a pressure of the fire extinguishing agent in the cylinder, a valve for controlling discharge of the fire extinguishing agent, and a hose having one end connected to the valve; a first connecting member connected to the other end of the hose; and a pipe member capable of being coupled to and decoupled from the first connecting member for spraying the fire extinguishing agent. The pipe member can include a second connecting member including a first coupling portion fastened to the first connecting member and a hole plate formed in one body with the first coupling portion, and a pipe having one end connected to the second connecting member, the hole plate delaying a spraying time of the fire extinguishing agent by controlling a release pressure of the fire extinguishing agent.

[0011] In an embodiment, a plurality of holes for releasing the fire extinguishing agent can be formed in the pipe.

[0012] In an embodiment, the plurality of holes can be formed in upper and lower portions of the pipe and can be arranged in an extension direction of the pipe.

[0013] In an embodiment, a cross section of the pipe can have a quadrangular, circular, or elliptical shape.

[0014] In an embodiment, the pipe member can further include a marker portion for distinguishing an up-and-down direction of the pipe.

[0015] In an embodiment, the pipe can include a first pipe extending from one end of the pipe in an extension direction, and a second pipe extending from the first pipe in the extension direction and formed with the plurality of holes, a cross sectional shape of the first pipe being different from a cross sectional shape of the second pipe.

[0016] In an embodiment, the pipe can be made of a hard material that does not bend due to external pressure.

[0017] In one embodiment, the first connecting member can include a nozzle for spraying the fire extinguishing agent, and a fastening portion fastened with the second connecting member.

[0018] In one embodiment, the fire extinguishing device can further include an extension member including a third connecting member capable of being coupled to and decoupled from the first connecting member, a fourth connecting member capable of being coupled to and decoupled from the second connecting member, and an extension hose having one end connected to the third connecting member and the other end connected to the fourth connecting member and made of a soft material capable of being bent by external pressure. The coupling portion of the second connecting member can be fastened with the fourth connecting member.

[0019] The fire extinguishing device of the present application can increase the spraying time of the fire extinguishing agent through the pipe member, thereby maintaining the cooling effect required for fire extinguishing, rapidly and completely extinguishing the fire of the lithium ion battery at the initial stage, and connecting the pipe member to the hose of the fire extinguisher simply and quickly while reducing the release pressure of the fire extinguishing agent.

[0020] The fire extinguishing device of the present application can improve the fire extinguishing effect by directly spraying the fire extinguishing agent to the battery cell as a cause of fire through the pipe member which is not bent in the extension direction and covers the cluster cover opening of the battery module.

[0021] The fire extinguishing device of the present application can intuitively and easily recognize the spraying direction of the fire extinguishing agent, and can allow a user to rapidly spray the fire extinguishing agent toward the battery cell where the fire occurs.

[0022] The fire extinguishing device of the present application can simply and quickly connect the extension hose between the fire extinguisher and the pipe member to extend the length of the extension hose as needed, and can directly spray sufficient fire extinguishing agent to the place where the fire occurs while maintaining a safe distance even if the fire occurs at a position far from the user. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A plan view of a fire extinguishing device according to one embodiment of the present application.

[0024] Figure 2a A plan view of a connecting member according to one embodiment of the present application, which is enlarged to show Figure 1 a region AA.

[0025] Figure 2b A sectional view of a connecting member according to one embodiment of the present application.

[0026] Figure 3a A perspective view of a pipe member according to one embodiment of the present application.

[0027] Figure 3b A perspective view of a pipe member according to one embodiment of the present application.

[0028] Figure 3c Perspective view of a pipe fitting according to an embodiment of the application.

[0029] Figure 4a Perspective view of a pipe fitting according to an embodiment of the application.

[0030] Figure 4b Perspective view of a pipe fitting according to an embodiment of the application.

[0031] Figure 4c Perspective view of a pipe fitting according to an embodiment of the application.

[0032] Figure 5a Perspective view of a pipe fitting according to an embodiment of the application.

[0033] Figure 5b Perspective view of a pipe fitting according to an embodiment of the application.

[0034] Figure 5c Perspective view of a pipe fitting according to an embodiment of the application.

[0035] Figure 6a Side view of a pipe fitting according to an embodiment of the application.

[0036] Figure 6b Side view of a pipe fitting according to an embodiment of the application.

[0037] Figure 6c Side view of a pipe fitting according to an embodiment of the application.

[0038] Figure 7 Top view of a pipe fitting according to an embodiment of the application.

[0039] Figure 8a Cross-sectional view of a pipe fitting according to an embodiment of the application.

[0040] Figure 8b Cross-sectional view of a pipe fitting according to an embodiment of the application.

[0041] Figure 9 Perspective view of a pipe fitting according to an embodiment of the application.

[0042] Figure 10 Top view of a fire extinguishing device according to an embodiment of the application.

[0043] Explanation of reference signs

[0044] 1: fire extinguishing device

[0045] 10: fire extinguisher

[0046] 11: gas cylinder

[0047] 12: pressure gauge

[0048] 13: valve

[0049] 14: hose

[0050] 20: first connecting member

[0051] 30: pipe member

[0052] 31: second connecting member

[0053] 32: pipe portion

[0054] 33: marker portion

[0055] 40: extension member

[0056] 41: extension hose

[0057] 42: third connecting member

[0058] 43: fourth connecting member

[0059] 310: coupling portion

[0060] 320: aperture plate

[0061] 330: aperture DETAILED DESCRIPTION

[0062] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, this is not intended to limit the present application to specific embodiments and it is to be understood that all changes, equivalents, substitutions and modifications falling within the spirit and technical scope of the present application are encompassed.

[0063] In the present specification, when it is indicated that a certain structural element (or region, layer, portion, etc.) is "positioned", "connected" or "coupled" to another structural element, it means that it can be directly placed, connected or coupled to the other structural element or a third structural element can be placed therebetween.

[0064] Also, the terms "below", "lower", "above", "upper" and the like are used to describe the relative relationship between the structural elements shown in the drawings, and the shown terms are used as relative concepts based on the direction of the markers of the drawings.

[0065] In the present specification, the terms "include" or "have" and the like are used to designate the presence of the described features, operations, structural elements, components or combinations thereof, and it is understood that the presence of one or more other features, operations, structural elements, components or additional possibilities are not precluded.

[0066] The same reference numerals refer to the same structural elements. Also, in the process of explaining the drawings, the thickness, proportions and sizes of the structural elements can be exaggerated for effective explanation of the technical content.

[0067] The terms "first", "second", and the like are used to describe various structural elements, which are not limited to the terms, and the terms are used only to distinguish one structural element from another. For example, a first structural element can be named a second structural element, and a second structural element can also be named a first structural element without departing from the scope of the present application. Unless a different meaning is clearly indicated in the context, a singular expression includes a plural expression.

[0068] Hereinafter, an extinguishing device according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0069] Figure 1 A plan view of a connecting member according to an embodiment of the present application. Figure 2a A plan view of a connecting member according to an embodiment of the present application. Figure 1 A sectional view of a connecting member according to an embodiment of the present application. Figure 2b A sectional view of a connecting member according to an embodiment of the present application. Figure 2a A sectional view of a connecting member according to an embodiment of the present application.

[0070] Referring to Figure 1 , the extinguishing device 1 includes an extinguisher 10, a first connecting member 20, and a tube member 30. The extinguisher 10 is provided in a portable or movable form. The extinguisher 10 includes a cylinder 11, a pressure gauge 12, a valve 13, and a hose 14.

[0071] A space for filling an extinguishing agent is formed inside the cylinder 11. The extinguishing agent is filled in the cylinder 11 at a predetermined pressure, and can be released in the case where the extinguisher 10 is operated.

[0072] In order to extinguish a fire of a battery cell such as a lithium ion battery, the extinguishing agent can include a substance having a cooling effect. Compared to water, the extinguishing agent having a cooling effect can be rapidly vaporized and rapidly reduce the temperature of the surroundings, and thus, can block a chain reaction of a fire such as thermal runaway, fire spread, or rekindling, which occurs when a lithium ion battery fire occurs. For example, the extinguishing agent can be an extinguishing agent having water as a basic component, an HFC series extinguishing agent, an FK-5-1-12 or the like halogen compound extinguishing agent. In addition to the cooling effect, the extinguishing agent can include a substance having an oxygen blocking effect or a dust blocking effect. However, the substance of the extinguishing agent is not limited to one, and can be any substance capable of extinguishing a fire.

[0073] The pressure gauge 12 can measure the pressure of the extinguishing agent filled inside the cylinder 11 and mark the pressure. The filling state of the extinguishing agent inside the cylinder 11 can be confirmed by the pressure gauge 12. The implementation of the pressure gauge 12 is not limited to one, and can be any implementation capable of measuring the filling pressure of the extinguishing agent inside the cylinder 11.

[0074] The valve 13 is combined with the inlet of the cylinder 11, and the discharge of the extinguishing agent can be controlled. The fire extinguisher 10 can include a handle for controlling the opening of the inlet of the cylinder 11, and the valve 13 can discharge the extinguishing agent by the operation of the handle. For example, a safety pin capable of being attached and detached can be provided to the handle of the fire extinguisher 10, and when the safety pin is removed, the valve 13 can discharge the extinguishing agent as the handle is pulled.

[0075] One end of the hose 14 is connected to the valve 13. A passage for the extinguishing agent to pass through is formed inside the hose 14, and a flow path for the extinguishing agent to be discharged through the inlet of the cylinder 11 can be provided.

[0076] The other end of the hose 14 is connected to the first connecting member 20. A passage for the extinguishing agent to pass through can be formed inside the first connecting member 20. When the extinguishing agent is discharged, the extinguishing agent can pass through the inside passage of the hose 14 and the first connecting member 20 connected to the hose 14. The first connecting member 20 connected to the hose 14 can be a nozzle for discharging the extinguishing agent. Also, the first connecting member 20 can include a fastening portion connected to an additional connecting member such as the second connecting member 31 of the pipe member 30. That is, the first connecting member 20 is a nozzle for discharging the extinguishing agent, and includes a fastening portion connected to an additional connecting member. Therefore, in the case where the first connecting member 20 is not connected to the additional connecting member, the extinguishing agent can be discharged through the nozzle of the first connecting member 20, and in the case where the first connecting member 20 is connected to the additional connecting member, the extinguishing agent can be discharged through the nozzle of the first connecting member 20 to the additional connecting member connected to the first connecting member 20.

[0077] The hose 14 can be made of a soft material capable of being bent or folded by external pressure. For example, the hose 14 can be a rubber hose. However, the material of the hose 14 is not limited thereto. A user of the fire extinguishing apparatus 1 can grasp the hose 14 to control the alignment direction of the hose 14, can align the discharge direction of the extinguishing agent, and can align the pipe member 30 combined with the hose 14 to a place where a fire occurs.

[0078] The pipe member 30 includes the second connecting member 31 and the pipe 32. The second connecting member 31 can be combined with and separated from the first connecting member 20. As the first connecting member 20 is combined with the second connecting member 31, the hose 14 and the pipe member 30 can be connected to each other. As the second connecting member 31 is combined with the first connecting member 20, the pipe member 30 can be extended from the hose 14. In the case where the pipe member 30 is used up or needs to be replaced, the second connecting member 31 can be separated from the first connecting member 20 to separate the pipe member 30 from the fire extinguisher 10.

[0079] Figure 2a and Figure 2b An embodiment in which the first connecting member 20 and the second connecting member 31 are combined with each other is shown.Figure 2b The first connecting member 20 and the second connecting member 31 are shown as being combined with each other in a first direction DR1.

[0080] On the other hand, in Figure 2b A second direction DR2 and a third direction DR3 are indicated as being perpendicular to the first direction DR1, and the second direction DR2 and the third direction DR3 are perpendicular to each other. However, the indicated directions of the first direction DR1, the second direction DR2, and the third direction DR3 are relative concepts, and can be converted into different directions.

[0081] Referring to Figure 2a and Figure 2b The second connecting member 31 includes a combination portion 310 and an orifice 320.

[0082] When the pipe member 30 is combined with the first connecting member 20, the combination portion 310 refers to a portion that is fastened to the first connecting member 20. The combination portion 310 of the first connecting member 20 and the second connecting member 31 can have a combination structure that is simply and quickly combined with each other. For example, the combination portion 310 of the first connecting member 20 and the second connecting member 31 can be combined using a quick connector fastening method of one-touch fastening, or can be combined using a thread fastening method.

[0083] In an embodiment, a passage through which the fire extinguishing agent passes is formed in the inside of the second connecting member 31, and a fastening groove 310a that is recessed toward a center axis of the passage can be formed in the combination portion 310. A sleeve 20a that can be pulled in one direction (for example, the first direction DR1 of the first connecting member 20) can be provided on the outside of the first connecting member 20, and a ball 20b that is fastened to the fastening groove 310a of the combination portion 310 can be provided in the inside of the first connecting member 20. Figure 2b

[0084] Referring to Figure 2b When the sleeve 20a of the first connecting member 20 is pulled in the first direction DR1, a passage that can be pulled in the direction of the outside of the first connecting member 20 (for example, the second direction DR2 of the first connecting member 20) is formed in the inside, and the ball 20b is fastened to the fastening groove 310a of the combination portion 310. Figure 2b ​The space in which the ball 20b moves (in the direction parallel to DR3) is moved. While the sleeve 20a is pulled along the first direction DR1, if the connecting portion 310 of the second connecting member 31 is inserted into the first connecting member 20, the ball 20b moves outward as it is pushed. After the connecting portion 310 is inserted to its end, if the sleeve 20a is returned to its original position, the ball 20b is secured in the fastening groove 310a of the connecting portion 310, and the first connecting member 20 can be combined with the second connecting member 31. Therefore, the first connecting member 20 and the second connecting member 31 can be easily connected simply by pulling the sleeve 20a of the first connecting member 20 and inserting the second connecting member 31 into the first connecting member 20.

[0085] With the simple and quick connection of the first connecting component 20 and the second connecting component 31, the pipe component 30 can be easily connected to the hose 14 of the fire extinguisher 10. For example, under normal conditions, the pipe component 30 can be detached from and stored in the fire extinguisher 10. In the event of a fire, the pipe component 30 can be quickly connected to the hose of the fire extinguisher 10 to deal with the fire. Furthermore, when it is necessary to replace the pipe component 30, anyone can easily and quickly detach and connect the hose 14 and the pipe component 30.

[0086] However, as Figure 2a and Figure 2b As shown, the combination method and structure of the first connecting component 20 and the second connecting component 31 are only examples. The combination method or structure of the first connecting component 20 and the second connecting component 31 are not limited to the embodiment shown in the figure. As long as they are fastened to each other in a way that allows them to be joined and separated.

[0087] The perforated plate 320 can be integrally formed with the connecting portion 310. For example, the connecting portion 310 and the perforated plate 320 can be formed as a single, inseparable body. The perforated plate 320 may include a plate extending from the end of the connecting portion 310 and integrally formed with the connecting portion 310. When the first connecting member 20 is engaged with the second connecting member 31, the plate of the perforated plate 320 may be located inside the passage formed in the first connecting member 20.

[0088] A passageway for the extinguishing agent can be formed in the joint 310 and the orifice plate 320. The passageway formed in the orifice plate 320 is connected to the passageway formed in the joint 310, forming a passageway for the extinguishing agent. The passageway formed in the orifice plate 320 can correspond to an opening formed in the orifice plate 320.

[0089] The diameter of the passage formed in the hole plate 320, i.e., the diameter of the opening formed in the plate of the hole plate 320, can be smaller than the diameter of the passage formed in the inside of the first connecting member 20. Accordingly, when the fire extinguishing agent flowing on the passage formed in the first connecting member 20 passes through the hole plate 320, the pressure of the fire extinguishing agent released from the front end of the hole plate 320 will decrease as the flow cross-sectional area of the fire extinguishing agent decreases. For example, in an embodiment, the pressure of the fire extinguishing agent released from the front end of the hole plate 320 can decrease to a level of about 1 bar to 3 bar. However, the release pressure is not limited to the numerical example, and the pressure of the fire extinguishing agent released from the front end of the hole plate 320 can be controlled according to the volume of the cylinder 11 of the fire extinguisher 10 or the size of the opening formed in the plate of the hole plate 320.

[0090] As the pressure of the fire extinguishing agent released from the front end of the hole plate 320 decreases, the flow rate of the fire extinguishing agent discharged from the fire extinguisher 10 and passing through the hose 14 also decreases, and as a result, the time for which the fire extinguishing device 1 sprays the fire extinguishing agent can be increased, i.e., the pipe member 30 including the second connecting member 31 can be combined with the fire extinguisher 10, and the release pressure of the fire extinguishing agent can be controlled by the hole plate 320, and as a result, the time for which the fire extinguishing device 1 sprays the fire extinguishing agent can be delayed. The hole plate 320 can be designed to satisfy the required fire extinguishing agent spraying time of the fire extinguishing device 1 by adjusting the size of the opening formed in the plate of the hole plate 320.

[0091] If the fire originating from the lithium ion battery cannot be completely extinguished at the initial stage, problems such as thermal runaway or rekindling can occur, and in order to completely extinguish the fire originating from the lithium ion battery, it is necessary to spray the fire extinguishing agent for a sufficient time to maintain the cooling effect.

[0092] In the fire extinguishing device 1 of the present application, the pipe member 30 including the hole plate 320 is combined with the fire extinguisher 10, and as the spraying time of the fire extinguishing agent is increased, as a result, the duration of the cooling effect of the fire extinguishing agent can be increased by continuously spraying the fire extinguishing agent. Accordingly, the fire extinguishing device 1 of the present application can spray the fire extinguishing agent for a sufficient time required to extinguish the fire originating from the lithium ion battery at the initial stage, and can be used to quickly and completely extinguish the fire at the initial stage when the lithium ion battery fire occurs.

[0093] Referring to Figure 1 and Figure 2a , one end of the pipe portion 32 is connected to the second connecting member 31. A passage through which the fire extinguishing agent passing through the second connecting member 31 passes is formed in the inside of the pipe portion 32.

[0094] The second connecting member 31 includes a coupling portion 310 and a hole plate 320 formed as one body, and provides easy coupling of a structure connected to the second connecting member 31 to other structures, and also provides a function of controlling the release pressure of a fluid. Accordingly, the pipe portion 32 connected to the second connecting member 31 can be easily coupled to the hose 14 of the fire extinguisher 10 connected to the first connecting member 20 through the second connecting member 31. Also, as the pipe portion 32 is connected to the second connecting member 31, the additional hole plate added in the pipe portion 32 to reduce the release pressure of the fire extinguishing agent can be omitted.

[0095] Figures 3a to 3c 、 Figures 4a to 4c and Figures 5a to 5c is a perspective view of the pipe member 30 according to an embodiment of the present application. Figures 3a to 5c A plurality of embodiments of the pipe member 30 in which the shape of the pipe portion 32 is changed are illustrated. However, this is only an example, and the shape of the pipe portion 32 is not limited to the shape illustrated. Figures 3a to 5c

[0096] Referring to Figures 3a to 5c , the pipe portion 32 can extend in one direction. Figures 3a to 5c An example in which the pipe portion 32 extends in a first direction DR1 is illustrated. In the present specification, the direction in which the pipe portion 32 extends can be defined as the extension direction of the pipe portion 32.

[0097] The pipe portion 32 can be made of a hard material that does not bend due to external pressure. Accordingly, the pipe portion 32 can maintain a straight linear shape straight in the extension direction. When a user grasps the hose 14 of the fire extinguishing device 1 in this state, the pipe portion 32 can maintain the straight linear shape and easily reach a desired location. In particular, as the pipe portion 32 maintains the straight linear shape, the pipe portion 32 can easily reach a location where a fire has occurred by smoothly passing through a narrow space between battery cells in an energy storage system, and thus the extinguishing effect of the fire extinguishing device 1 can be improved.

[0098] The pipe portion 32 can include a metal material having heat resistance. For example, the pipe portion 32 can include a stainless steel pipe such as an STS pipe, a copper pipe, or a nickel-plated pipe. However, the material of the pipe portion 32 is not limited to a certain one, as long as it does not deform and maintains a straight linear shape under high temperature conditions.

[0099] Referring to Figures 3a to 4c , a plurality of holes 330 for releasing a fire extinguishing agent can be formed in the pipe portion 32. The plurality of holes 330 are integrally opened with a passage formed inside the pipe portion 32, and as the passage passes through the pipe portion 32, the fire extinguishing agent can be released through the plurality of holes 330.

[0100] The plurality of holes 330 can be arranged in the extension direction of the pipe portion 32. Referring to Figures 3a to 4c ​The pipe portion 32 can extend in the first direction DR1, and the plurality of holes 330 can be arranged in the first direction DR1. In one embodiment, the plurality of holes 330 can be arranged in the extending direction of the pipe portion 32 with a predetermined interval between adjacent holes 330. However, the plurality of holes 330 can be arranged in the extending direction of the pipe portion 32 with a regular change in the interval between the holes 330 or irregularly.

[0101] The plurality of holes 330 can be formed in the upper portion and the lower portion of the pipe portion 32. In the present embodiment, the upper portion of the pipe portion 32 is a portion located above a virtual plane serving as the central axis of the pipe portion 32, and the lower portion of the pipe portion 32 is a portion located below the virtual plane. The upper portion and the lower portion of the pipe portion 32 can be portions facing each other in a direction parallel to the third direction DR3 with the virtual plane as the center. Figures 3a to 4c An example of the plurality of holes 330 formed in the upper portion of the pipe portion 32 is shown.

[0102] Referring to Figures 3a to 3c , the tip portion of the pipe portion 32 is not open. Thus, the extinguishing agent can be ejected through the plurality of holes 330 formed in the upper portion or the lower portion of the pipe portion 32.

[0103] However, the embodiment of the pipe portion 32 is not limited to this, and referring to Figures 4a to 4c , the extinguishing agent extends through the pipe portion 32 to the tip portion of the pipe portion 32, and a hole 333 can be formed in the tip portion of the pipe portion 32. The extinguishing agent can be ejected not only through the plurality of holes 330 formed in the upper portion or the lower portion of the pipe portion 32 but also through the hole 333 formed in the tip portion. For example, the extinguishing agent can be ejected in a direction parallel to the third direction DR3 through the plurality of holes 330 formed in the upper portion or the lower portion of the pipe portion 32, and can be ejected in a direction parallel to the first direction DR1 through the hole 333 formed in the tip portion of the pipe portion 32.

[0104] Referring to Figures 5a to 5c , according to one embodiment, the pipe portion 32 can have the hole 333 formed only in the tip portion. That is, the pipe portion 32 can not have the plurality of holes 330 in the upper portion and the lower portion, and can have the hole 333 formed in the tip portion. The extinguishing agent can be ejected through the hole 333 formed in the tip portion of the pipe portion 32. As the extinguishing agent is concentratedly ejected through the hole 333 formed in the tip portion of the pipe portion 32, the pipe portion 32 can be effectively used to extinguish a fire originating from a narrow space. That is, in the case where a fire occurs in a narrow space, after the pipe portion 32 is inserted into the space, the extinguishing agent can be concentratedly ejected toward the site where the fire occurs through the hole 333 of the tip portion to effectively extinguish the fire.

[0105] Figures 6a to 6c A side view of the pipe member 30 according to one embodiment of the present application.Figures 6a to 6c To observe a side view of the pipe member 30 in the second direction DR2, a plurality of holes 330 formed in the upper portion and / or the lower portion of the pipe portion 32 are exemplarily shown.

[0106] Referring to Figure 6a and Figure 6b Among the plurality of holes 330 of the pipe portion 32, at least one hole 331 is formed in the upper portion of the pipe portion 32, and at least one other hole 332 can be formed in the lower portion of the pipe portion 32.

[0107] The hole 331 formed in the upper portion of the pipe portion 32 can be open toward the upper direction of the pipe portion 32. The hole 332 formed in the lower portion of the pipe portion 32 can be open toward the lower direction of the pipe portion 32. The fire extinguishing agent released through the hole 331 formed in the upper portion of the pipe portion 32 can be ejected from the pipe portion 32 along the upper direction, and the fire extinguishing agent released through the hole 332 formed in the lower portion of the pipe portion 32 can be ejected from the pipe portion 32 along the lower direction. On the other hand, in the present embodiment, the upper direction and the lower direction cross the extending direction of the pipe portion 32, and refer to directions that are side by side with the third direction DR3 and face each other.

[0108] Referring to Figure 6a In one embodiment, the plurality of holes 331, 332 can be formed symmetrically with each other with the center axis of the pipe portion 32 as a center. Thus, the plurality of holes 331 formed in the upper portion of the pipe portion 32 and the plurality of holes 332 formed in the lower portion of the pipe portion 32 correspond to and overlap with each other in the third direction DR3. The interval between the plurality of holes 331 formed in the upper portion of the pipe portion 32 can be the same as the interval between the plurality of holes 332 formed in the lower portion of the pipe portion 32.

[0109] However, the embodiment is not limited thereto, and referring to Figure 6b at least one of the plurality of holes 331 formed in the upper portion of the pipe portion 32 can be formed at a position that is staggered with the plurality of holes 332 formed in the lower portion of the pipe portion 32 in the third direction DR3. That is, the plurality of holes 331, 332 can not be formed symmetrically with each other with the center axis of the pipe portion 32 as a center. In one embodiment, the plurality of holes 331 formed in the upper portion of the pipe portion 32 and the plurality of holes 332 formed in the lower portion of the pipe portion 32 can not overlap with each other in the third direction DR3.

[0110] The embodiment is not limited thereto, and referring to Figure 6c the plurality of holes 330 can be formed only in the upper portion or the lower portion of the pipe portion 32. Thus, the fire extinguishing agent can be ejected from the pipe portion 32 along one of the upper direction and the lower direction.

[0111] On the other hand, Figure 6a and Figure 6bAn embodiment is shown in which the interval between the plurality of holes 331 formed in the upper portion of the pipe portion 32 is the same as the interval between the plurality of holes 332 formed in the lower portion of the pipe portion 32, but the embodiment is not limited thereto, and the interval between the plurality of holes 331 formed in the upper portion of the pipe portion 32 and the interval between the plurality of holes 332 formed in the lower portion of the pipe portion 32 can also be different from each other.

[0112] Figure 7 A plan view of the pipe member 30 according to an embodiment of the present application. Figure 7 A plan view of the pipe member 30 as viewed in the third direction DR3, which corresponds to the upper portion of the pipe portion 32.

[0113] Referring to Figure 7 , according to an embodiment, the plurality of holes 330 formed in the pipe portion 32 can be arranged to constitute a plurality of hole groups 330-G. The hole group 330-G can include a plurality of holes 330 arranged adjacent to each other along the extension direction of the pipe portion 32. Figure 7 An example is shown in which one hole group 330-G is composed of two holes 330 arranged adjacent to each other along the first direction DR1, but the embodiment is not limited thereto, and one hole group 330-G can also be composed of a larger number of holes 330.

[0114] The hole group 330-G can be arranged along the extension direction of the pipe portion 32. The interval d2 between the hole 330 of one hole group 330-G and the hole 330 of another hole group 330-G adjacent to said one hole group 330-G can be greater than the interval d1 between the plurality of holes 330 constituting one hole group 330-G.

[0115] Figure 8a and Figure 8b A sectional view of the pipe portion 32 according to an embodiment of the present application. Figure 8a and Figure 8b A sectional view of the pipe portion 32 as viewed in the first direction DR1 is exemplarily shown.

[0116] Referring to Figure 3a , Figure 3b , Figure 4a , Figure 4b , Figure 5a , Figure 5b , Figure 8a and Figure 8b , the cross section of the pipe portion 32 can actually have a quadrangular shape, a circular shape, or an elliptical shape. Figure 3a , Figure 4a and Figure 5a An embodiment is shown in which the cross section of the pipe portion 32 is circular, Figure 3b , Figure 4b and Figure 5b An embodiment is shown in which the cross section of the pipe portion 32 is rectangular, Figure 8aAn embodiment in which the cross section of the tube portion 32 is elliptical is shown.

[0117] On the other hand, in the present application, the quadrangular cross section of the tube portion 32 is not limited to a quadrangular shape in which four sides are straight lines. A shape in which the sides are curved or the corners are rounded is included. For example, as shown in Figure 8b , a tube portion 32 in which the long sides of the cross section are straight lines and the short sides are curved is included in the embodiment in which the cross section of the tube portion 32 is rectangular.

[0118] In an embodiment, the cross section of the tube portion 32 can be a shape that can distinguish between the up-down direction and the left-right direction. The height of the cross section of the tube portion 32 in the up-down direction (the height in the third direction DR3) and the width of the cross section of the tube portion 32 in the left-right direction (the width in the second direction DR2) can be different from each other, whereby the cross section of the tube portion 32 can be distinguished between the up-down direction and the left-right direction. Therefore, in the case where the tube portion 32 is rotated by 90 degrees, the shape of the cross section thereof can be distinguished from the shape before the rotation by 90 degrees. For example, as shown in Figure 3b , Figure 4b , Figure 8a and Figure 8b , the cross section of the tube portion 32 can be rectangular or elliptical, and the shape of the cross section of the tube portion 32 can distinguish between the up-down direction and the left-right direction. With the cross section of the tube portion 32 having a shape that can distinguish between the up-down direction and the left-right direction, when the fire extinguishing device 1 is used, a user can easily recognize the direction in which the plurality of holes 330 are formed in the tube portion 32, and can control the direction in which the fire extinguishing agent is sprayed to be directed toward a place where a fire has occurred.

[0119] Generally, the cross section height and the cross section width of the tube portion 32 can be smaller than the nozzle of the fire extinguisher. For example, the tube portion 32 can be a tube having an outer diameter of 1 / 2" or 1 / 4". However, the outer diameter of the tube portion 32 is not limited to the example described above, and various sizes can be designed according to the use environment of the fire extinguishing device 1 (for example, the size of the cluster cover). Since the cross section height and the cross section width of the tube portion 32 are small, the tube portion 32 can easily pass through the cluster cover that is opened in a mesh shape for covering the battery module and for ventilation in the energy storage system. Also, the tube portion 32 can easily reach a battery cell where a fire has occurred through the narrow space between the battery modules or between the battery cells. Thus, the fire extinguishing device 1 of the present application can directly spray the fire extinguishing agent toward the battery cell where a fire has occurred through the tube portion 32, and can rapidly extinguish the fire at an early stage.

[0120] Referring to Figure 3c , Figure 4c and Figure 5c , according to an embodiment, the tube portion 32 can include a plurality of tubes 32a, 32b having cross section shapes different from each other. The plurality of tubes 32a, 32b can be formed in one body and can constitute one tube portion 32. The plurality of tubes 32a, 32b in one body can have one passage formed therein through which the fire extinguishing agent passes.

[0121] The pipe portion 32 can include a first pipe 32a extending from an end portion connected to the second connecting member 31 along an extension direction of the pipe portion 32, and a second pipe 32b extending from the first pipe 32a along the extension direction. The first pipe 32a adjacent to the second connecting member 31 can not be formed with the plurality of holes 330. The second pipe 32b farther from the second connecting member 31 than the first pipe 32a along the extension direction of the pipe portion 32 can be formed with the plurality of holes 330.

[0122] The cross-sectional shape a1 of the first pipe 32a can be different from the cross-sectional shape a2 of the second pipe 32b. The cross-sectional shape a1 of the first pipe 32a can have a shape capable of distinguishing between the up-down direction and the left-right direction. The cross-sectional shape a1 of the first pipe 32a can be a shape in which the height in the up-down direction and the width in the left-right direction are different from each other. For example, the cross-sectional shape a1 of the first pipe 32a can have a rectangular or elliptical shape. Figure 3c 、 Figure 4c and Figure 5c An embodiment in which the cross-sectional shape a1 of the first pipe 32a is rectangular is shown.

[0123] On the contrary, the cross-sectional shape a2 of the second pipe 32b can have a square or circular shape in which the height in the up-down direction and the width in the left-right direction are actually the same. As described above, even if the cross-sectional shape a2 of the second pipe 32b is a shape incapable of distinguishing between the up-down direction and the left-right direction, the first pipe 32a can perform the role of distinguishing between the up-down direction and the left-right direction of the pipe portion 32. Thus, a user of the fire extinguishing device 1 can easily recognize the direction in which the plurality of holes 330 are formed by the direction of the first pipe 32a, and can control the direction in which the fire extinguishing agent is sprayed to be directed toward a place where a fire has occurred.

[0124] Figure 9 A perspective view of the pipe member 30 according to an embodiment of the present application is shown. As shown in Figure 9 , the pipe member 30 includes substantially the same structure as the pipe member 30 shown in Figure 3a , and thus, detailed description related to the same structure will be omitted below.

[0125] Referring to Figure 9 , the pipe member 30 can further include a marker 33 for distinguishing between the up-down direction of the pipe portion 32. The marker 33 is provided on the upper portion or the lower portion of the pipe portion 32, and a user of the fire extinguishing device 1 can distinguish between the upper portion and the lower portion of the pipe portion 32 by the marker 33.

[0126] The marker 33 can be provided adjacent to an end portion of the pipe portion 32 connected to the second connecting member 31. The marker 33 can be provided between the end portion of the pipe portion 32 connected to the second connecting member 31 and the plurality of holes 330 along the extension direction of the pipe portion 32.

[0127] Even if the cross section of the pipe portion 32 is a shape that cannot distinguish the upper and lower directions and the left and right directions, for example, a square or a circle, since the pipe member 30 further includes the marker portion 33, the user of the fire extinguishing device 1 can easily recognize the direction in which the plurality of holes 330 are formed by the marker portion 33.

[0128] As shown in FIG. 1, the marker portion 33 can be a protruding portion protruding from the outer surface of the pipe portion 32. The protruding portion can protrude from the outer surface of the upper portion or the lower portion of the pipe portion 32. The user of the fire extinguishing device 1 can distinguish the upper portion and the lower portion of the pipe portion 32 by the protruding portion. Figure 9

[0129] In an embodiment, the protruding portion can be disposed in parallel with the plurality of holes 330 formed in the upper portion of the pipe portion 32 along the extension direction of the pipe portion 32. If the pipe member 30 is positioned at a position where the protruding portion of the pipe member 30 faces upward, the plurality of holes 330 formed in the upper portion of the pipe portion 32 can face upward together with the protruding portion. Thus, the user of the fire extinguishing device 1 can easily recognize the direction in which the plurality of holes 330 face by the protruding portion, and can easily control the direction in which the fire extinguishing agent is sprayed.

[0130] On the other hand, the marker portion 33 is not limited to the embodiment shown in FIG. 1, and the marker portion 33 can be disposed on the outer surface of the upper portion or the lower portion of the pipe portion 32, have a color different from that of the pipe portion 32, or be made of another material. In appearance, the marker portion 33 can provide a structure that can be distinguished from the pipe portion 32, and can distinguish the upper portion and the lower portion of the pipe portion 32 by the marker portion 33. The embodiment of the marker portion 33 is not limited to a certain one, as long as it can distinguish the upper portion and the lower portion of the pipe portion 32 by the marker. Figure 9

[0131] FIG. 2 is a plan view of the fire extinguishing device 1 according to an embodiment of the present application. Referring to FIG. 2, the fire extinguishing device 1 can further include an extension member 40. The extension member 40 includes an extension hose 41, a third connecting member 42, and a fourth connecting member 43. Figure 10 Figure 10 A passage through which the fire extinguishing agent passes can be formed inside the extension hose 41. The extension hose 41 can be made of a soft material that can be bent or folded by external pressure. For example, the extension hose 41 can include the same material as that of the hose 14. However, it is not limited thereto, and the extension hose 41 can include a material different from that of the hose 14, as long as it is made of a soft material that can be bent.

[0132] One end of the extension hose 41 is connected to the third connecting member 42, and the other end of the extension hose 41 is connected to the fourth connecting member 43.

[0133] One end of the extension hose 41 is connected to the third connecting member 42, and the other end of the extension hose 41 is connected to the fourth connecting member 43.

[0134] ​​The third connecting member 42 can be coupled to and decoupled from the first connecting member 20. The third connecting member 42 can have a coupling structure that can be easily and quickly coupled to the first connecting member 20. For example, the third connecting member 42 can be coupled to the first connecting member 20 by a quick connector fastening method or a thread fastening method. In an embodiment, the third connecting member 42 can have a coupling structure having the same structure as the coupling portion 310 of the second connecting member 31.

[0135] The fourth connecting member 43 can be coupled to and decoupled from the second connecting member 31. The fourth connecting member 43 can have a coupling structure that can be easily and quickly coupled to the second connecting member 31. For example, the fourth connecting member 43 can be coupled to the second connecting member 31 by a quick connector fastening method or a thread fastening method. In an embodiment, the fourth connecting member 43 can have a coupling structure having the same structure as the first connecting member 20. However, the coupling method or structure of the plurality of connecting members 20, 31, 42, and 43 is not limited to a certain method, and can be fastened in a manner that can be coupled and decoupled.

[0136] As the third connecting member 42 is easily and quickly coupled to the first connecting member 20 and the fourth connecting member 43 is easily and quickly coupled to the second connecting member 31, the extension member 40 can be easily coupled to the hose 14 and the pipe member 30 of the fire extinguisher 10 when the length of the hose 14 needs to be extended.

[0137] Therefore, when a fire occurs at a location that is far away or high from a location where a user can access, the user can easily couple the extension member 40 to the hose 14 and the pipe member 30 of the fire extinguisher 10 if the user cannot reach the location of the fire only by the length of the hose 14 and the pipe member 30. Thus, the fire extinguishing agent can be directly sprayed to the location of the fire to easily extinguish the fire without being sprayed away from the location of the fire while maintaining a safe distance from the location of the fire. Also, if the extension member 40 is used, the extension member 40 can be easily decoupled from the fire extinguisher 10 and the pipe member 30, and thus, the extension member 40 can be easily stored and managed.

[0138] Table 1 below shows the values ​​measured using the fire extinguishing device 1 according to an embodiment of the present invention (hereinafter, the embodiment) and the values ​​measured using a conventional fire extinguisher (hereinafter, the comparative example) for "extinguishing agent spraying time" and "the proportion of extinguishing agent reaching the fire-generating battery (extinguishing agent reach rate)". The calculation method for "extinguishing agent reach rate" is shown in Equation 1 below, where "extinguishing agent dosage reaching the fire-generating battery" is calculated by spraying the extinguishing agent into a container with a shape similar to the battery, based on the weight difference before and after spraying.

[0139] Formula 1

[0140]

[0141] like Figure 1 As shown, the embodiment utilizes a fire extinguishing device 1, including a fire extinguisher with a fixed hose 14 and a pipe component 30, for measurement. The number of multiple holes 330 formed on the pipe component 30 of the fire extinguishing device 1 is 10 to 15. Furthermore, the "fire extinguishing agent spraying time" in this embodiment is a range value measured using the fire extinguishing device 1 by changing the filling pressure of the fire extinguisher 10 and the opening size formed on the orifice plate 320.

[0142] The comparative example utilizes a fire extinguishing device that includes a fire extinguisher with a tightly fitted rubber hose and a release nozzle integrally formed with the rubber hose at the end of the hose, rather than the hose component 30, for measurement. Furthermore, similar to the measurement performed in the embodiment by changing the filling pressure of the fire extinguisher 10, the "extinguishing agent injection time" in the comparative example is a range value measured by changing the filling pressure of the fire extinguisher.

[0143] Furthermore, the "extinguishing agent spraying time" and "extinguishing agent arrival rate" of the embodiments and comparative examples were measured while maintaining the same safe distance from the location where the lithium-ion battery fire occurred.

[0144] Table 1

[0145] Differentiation Example Comparative Example Fire extinguant injection time (sec) 30～120 10～15 Fire extinguant arrival rate (%) 95.0 5.5

[0146] Referring to Table 1, it can be confirmed that, compared to the comparative example without the connecting component equipped with the orifice plate, the embodiment with the connecting component equipped with the orifice plate increases the extinguishing agent spraying time by approximately 3 to 12 times. Therefore, as the pressure of the extinguishing agent released from the front end of the orifice plate decreases, the flow rate of the extinguishing agent through the pipe component from the hose also decreases, thus confirming that the time for the extinguishing device to spray the extinguishing agent can be increased.

[0147] Furthermore, by increasing the extinguishing agent spraying time of the fire extinguishing device, the cooling effect of effectively extinguishing lithium-ion battery fires can be maintained continuously, thereby preventing thermal runaway or reignition originating from lithium-ion battery fires. Therefore, the present invention provides a fire extinguishing device for effectively extinguishing lithium-ion battery fires.

[0148] As can be confirmed with reference to Table 1, the example can improve the extinguishing agent arrival rate by about 17 times or more through the hose and the linear tube member compared to the comparative example. Thus, in addition to the hose, the linear tube member can also easily reach a fire site that is far away, and the extinguishing device can directly spray the extinguishing agent toward the lithium ion battery on fire. Thus, the present application can provide an extinguishing device that maximally improves the lithium ion battery fire extinguishing effect.

[0149] Although the preferred embodiments of the present application have been described above with reference to the accompanying drawings, it will be understood by those skilled in the art or ordinary skilled person that various modifications and changes can be made to the present application without departing from the scope of the inventive concept and technical field described in the following claims.

Claims

1. A fire extinguishing apparatus (1) characterized by comprising: a fire extinguisher (10) including a cylinder (11) for filling a fire extinguishing agent, a pressure gauge (12) for measuring the pressure of the fire extinguishing agent in the cylinder (11), a valve (13) for controlling the discharge of the fire extinguishing agent, and a hose (14) having one end connected to the valve (13); a first connecting member (20) connected to the other end of the hose (14); and a tube member (30) capable of being coupled to and decoupled from the first connecting member (20) for spraying the fire extinguishing agent, the tube member (30) including: a second connecting member (31) including a first coupling portion (310) fastened to the first connecting member (20) and a perforated plate (320) formed integrally with the first coupling portion (310); and a tube portion (32) having one end connected to the second connecting member (31), the perforated plate (320) delaying the spraying time of the fire extinguishing agent by controlling the release pressure of the fire extinguishing agent. A plurality of holes (330) for releasing the fire extinguishing agent are formed in the tube portion (32).

2. The fire extinguishing device (1) according to claim 1, characterized in that The plurality of holes (330) are formed in upper and lower portions of the tube portion (32) and are arranged in the extension direction of the tube portion (32).

3. The fire extinguishing device (1) according to claim 2, characterized in that The cross section of the tube portion (32) forms a quadrilateral, circular, or elliptical shape.

4. The fire extinguishing device (1) according to claim 2, characterized in that The tube member (30) further includes a marker portion (33) for distinguishing the upper and lower directions of the tube portion (32).

5. The fire extinguishing device (1) according to claim 2, characterized in that 6. The fire extinguishing apparatus (1) according to claim 2, characterized in that the tube portion (32) includes: a first tube (32a) extending in the extension direction from one end of the tube portion (32); and a second tube (32b) extending in the extension direction from the first tube (32a) and formed with the plurality of holes (330), the cross-sectional shape of the first tube (32a) is different from the cross-sectional shape of the second tube (32b). The tube portion (32) is made of a hard material that does not bend due to external pressure.

7. The fire extinguishing device (1) according to claim 1, characterized in that The first connecting member (20) includes:

8. The fire extinguishing device (1) according to claim 1, characterized in that a nozzle for spraying the fire extinguishing agent; and a fastening portion fastened to the second connecting member (31).

9. The fire extinguishing apparatus (1) according to claim 1, characterized in that the fire extinguishing apparatus (1) further includes an extension member (40), the extension member (40) includes: a third connecting member (42) capable of being coupled to and decoupled from the first connecting member (20); a fourth connecting member (43) capable of being coupled to and decoupled from the second connecting member (31); and an extension hose (41) having one end connected to the third connecting member (42) and the other end connected to the fourth connecting member (43) and made of a soft material that bends due to external pressure, the coupling portion (310) of the second connecting member (31) is fastened to the fourth connecting member (43). ​

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