Fire extinguishing device and method for energy storage system

Abstract

The invention relates to a fire extinguishing apparatus and method for an energy storage system. The fire extinguishing apparatus includes: a storage tank positioned at the rear of the frame and storing a fire extinguishing agent; a supplier connected to the storage tank and configured to supply a fire extinguishing agent; a dispenser connected to the supply and configured to dispense the fire extinguishing agent; a shelf pipe connected to the distributor and configured to change a flow direction of the fire extinguishing agent to a height direction of the shelf frame; and an injection pipe connected to the rack pipe and configured to inject a fire extinguishing agent onto each battery module in the rack frame. According to the present disclosure, a fire extinguishing agent stored in a storage tank positioned behind a plurality of frames may be supplied to a central portion of the plurality of frames arranged in a row and then dispensed, thereby rapidly spraying the fire extinguishing agent when a unidirectional or bidirectional fire occurs.

Description

Technical Field

[0001] Aspects of embodiments of the present disclosure relate to fire extinguishing apparatus and methods for energy storage systems. Background Art

[0002] Generally speaking, an energy storage system, or energy storage device (ESS), is a system that can store surplus electricity or electricity generated using renewable energy. By storing idle electricity during periods of low electricity demand and then using the ESS to supply electricity during periods of high electricity demand, it is possible to smoothly control electricity supply and demand.

[0003] In spaces or facilities where ESS are installed and operated, it is mandatory to install equipment to suppress battery fires caused by electric shock, short circuits, external surges, etc. Typical fire suppression systems include fire detection sensors, sprinklers installed around battery racks or on the ceiling, and fire extinguishing agent sprayers.

[0004] As battery energy density continues to increase, the volume and pressure of flames at the exhaust ports of battery cells are also increasing, making it difficult to extinguish or suppress fires early using conventional fire extinguishing equipment. Consequently, demand is growing for ESS fire suppression systems that can effectively suppress multiple battery fires and extinguish high-voltage fires early.

[0005] The above information disclosed in the art forming part of the background of the present disclosure is provided to enhance understanding of the background of the present disclosure and therefore may contain information that does not constitute prior art. Summary of the Invention

[0006] According to aspects of embodiments of the present disclosure, a fire extinguishing device and method for an energy storage system are provided, which can increase the speed of fire extinguishing by quickly supplying a fire extinguishing agent to various fire points.

[0007] The above and other aspects and features of the present disclosure will be described in or will be obvious from the following description of some exemplary embodiments of the present disclosure.

[0008] According to one or more embodiments of the present disclosure, a fire extinguishing device for an energy storage system includes: a storage tank positioned behind a rack frame and storing a fire extinguishing agent; a supplier connected to the storage tank and configured to supply the fire extinguishing agent; a distributor connected to the supplier and configured to distribute the fire extinguishing agent; a rack pipe connected to the distributor and configured to change the flow direction of the fire extinguishing agent to the height direction of the rack frame; and a spray pipe connected to the rack pipe and configured to spray the fire extinguishing agent onto each battery module in the rack frame.

[0009] The supplier may include a supply pipe connecting the storage tank and the dispenser; and a supply pump located on the supply pipe to discharge the fire extinguishing agent stored in the storage tank.

[0010] The storage tank may be positioned higher than the supply pump.

[0011] The supply pipe may include: a first supply pipe connecting the storage tank and the supply pump; and a second supply pipe extending from the supply pump between the rack pipes and connected to the dispenser.

[0012] The supplier may further include a supply valve located on the supply pipe to prevent backflow of the fire extinguishing agent.

[0013] The supply tube may be positioned between a pair of adjacent frame sections.

[0014] The supply pipe may be positioned at a central portion of the plurality of rack frames arranged in a row.

[0015] The distributor may include: a distribution pipe connected to the supplier, arranged to cross the rack frame, and connected to the rack pipe; and a distribution valve located on the distribution pipe to distribute the fire extinguishing agent.

[0016] The distribution valve can distribute the fire extinguishing agent supplied from the supplier in two directions.

[0017] The dispenser may be positioned between a low point and a high point of the frame.

[0018] The dispenser may be positioned between 50% and 90% of the height of the frame.

[0019] The fire extinguishing device for the energy storage system may further include: a sensor configured to detect a fire in the battery module (for example, detecting whether a fire occurs in the battery module); and a controller configured to control the supplier and the distributor according to the detection signal of the sensor to adjust the flow rate of the fire extinguishing agent.

[0020] The sensor may be located on the rack pipe.

[0021] Sensors can detect temperature, smoke or flames.

[0022] According to one or more embodiments of the present disclosure, a fire extinguishing method for an energy storage system includes: detecting a fire in one or more battery modules stored in a rack frame by a sensor; supplying a fire extinguishing agent stored in a storage tank positioned behind the rack frame by a supplier when the sensor detects the fire; distributing the fire extinguishing agent by a distributor connected to the supplier and arranged to span the rack frame; and spraying the fire extinguishing agent through a spray pipe connected to the rack frame.

[0023] In detection, one-way fire or two-way fire can be detected based on the supplier.

[0024] The supplier can supply the fire extinguishing agent between a pair of adjacent frames.

[0025] In the case of a one-way fire, the distributor may allow the flow of extinguishing agent in one direction only, and in the case of a two-way fire, the distributor may allow the flow of extinguishing agent in both directions.

[0026] The distribution ratio of the fire extinguishing agent can be varied according to the number of battery modules involved in the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings attached to this specification illustrate some embodiments of the present disclosure and, together with the detailed description of the present disclosure, further describe aspects and features of the present disclosure. However, the present disclosure should not be construed as being limited to the accompanying drawings.

[0028] Figure 1 is a plan view schematically illustrating a fire extinguishing device for an energy storage system according to an embodiment of the present disclosure;

[0029] Figure 2 is a front view schematically showing a fire extinguishing device for an energy storage system according to an embodiment of the present disclosure;

[0030] Figure 3 is a view schematically illustrating a supply unit according to an embodiment of the present disclosure;

[0031] Figure 4 is a view schematically showing a state in which a supply pipe is provided between a pair of frame frames according to an embodiment of the present disclosure;

[0032] Figure 5 is a view schematically showing a state in which a supply pipe according to an embodiment of the present disclosure is provided at a center portion of a plurality of rack frames arranged in a row;

[0033] Figure 6 is a plan view schematically illustrating a dispensing unit according to an embodiment of the present disclosure;

[0034] Figure 7 is a front view schematically showing a dispensing unit according to an embodiment of the present disclosure;

[0035] Figure 8 is a diagram schematically illustrating a sensor according to an embodiment of the present disclosure;

[0036] Figure 9 is a flow chart schematically illustrating a fire extinguishing method for an energy storage system according to an embodiment of the present disclosure;

[0037] Figure 10 is a diagram schematically illustrating a one-way fire according to an embodiment of the present disclosure;

[0038] Figure 11 is a diagram schematically illustrating a two-way fire according to an embodiment of the present disclosure;

[0039] Figure 12 is a graph comparing the arrival time of a fire extinguishing agent of a fire extinguishing device for an energy storage system according to an embodiment of the present disclosure with the arrival time of a fire extinguishing agent of a traditional fire extinguishing device;

[0040] Figure 13 is a diagram schematically illustrating an arrival time of a fire extinguishing agent according to a height of a distribution unit when a fire is detected at lower ends of a pair of rack pipes according to an embodiment of the present disclosure; and

[0041] Figure 14 is a view schematically illustrating an arrival time of a fire extinguishing agent according to a height of a distribution unit when a fire is detected at upper ends of a pair of rack pipes according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] Herein, some embodiments of the present disclosure will be described in further detail with reference to the accompanying drawings. The terms or words used in this specification and claims should not be interpreted as limited to the ordinary meaning or dictionary meaning, and should be interpreted as having meanings and concepts consistent with the technical ideas of the present disclosure based on the principle that the inventor can be his / her own lexicographer to appropriately define the concept of the term.

[0043] The embodiments described in this specification and the configurations shown in the accompanying drawings are provided as some exemplary embodiments of the present disclosure and do not necessarily represent all technical ideas, aspects, and features of the present disclosure. Therefore, it should be understood that at the time of filing this application, various equivalent solutions and modifications that can replace or modify the embodiments described herein may exist.

[0044] It should be understood that when an element or layer is referred to as being “on,” “connected to,” or “coupled to” another element or layer, it can be directly on, connected to, or coupled to the other element or layer, or one or more intervening elements or layers may be present. When an element or layer is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another element or layer, there are no intervening elements or layers. For example, when a first element is described as being “coupled to” or “connected to” a second element, the first element can be directly coupled or directly connected to the second element, or the first element can be indirectly coupled or indirectly connected to the second element via one or more intervening elements.

[0045] In the figures, for clarity of explanation, the sizes of various elements, layers, etc. can be magnified. The same reference numerals represent the same or similar elements. As used herein, the term "and / or" includes any and all combinations of one or more associated listed items. In addition, the use of "may" when describing the embodiments of the present disclosure relates to "one or more embodiments of the present disclosure". Expressions such as "at least one" and "any one" modify the entire list of elements before or after the list of elements, without modifying the individual elements in the list. When phrases such as "at least one of A, B, and C", "at least one selected from the group of A, B, and C", or "at least one selected from A, B, and C" are used to specify a list of elements A, B, and C, the phrase can refer to any and all suitable combinations or subsets of A, B, and C, such as A; B; C; A and B; A and C; B and C; or A and B and C. As used herein, the terms "use", "using," and "used" can be considered synonymous with the terms "utilize," "utilizing," and "utilized," respectively. As used herein, the terms "substantially," "approximately," and similar terms are used as terms of approximation rather than terms of degree, and are intended to account for the inherent variations in measurements or calculations that one of ordinary skill in the art would recognize.

[0046] It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Therefore, the first element, component, region, layer, or part discussed below may be referred to as a second element, component, region, layer, or part without departing from the teachings of the exemplary embodiments.

[0047] For ease of description, spatially relative terms such as "below," "beneath," "below," "above," "on," etc. may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure is flipped, an element described as being "below" or "beneath" other elements or features will then be oriented as being "above" or "above" the other elements or features. Thus, the term "below" may encompass both above and below. The device may be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0048] The terms used herein are for the purpose of describing embodiments of the present disclosure and are not intended to limit the present disclosure. As used herein, the singular form is also intended to include the plural form, unless the context clearly indicates otherwise. It should be further understood that the terms "includes," "including," "comprises," and / or "comprising" when used in this specification specify the presence of recited features, integers, steps, operations, elements, components, and / or groups thereof, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0049] In addition, any numerical range disclosed and / or listed herein is intended to include all subranges of the same numerical precision contained within the listed range. For example, the range of "1.0 to 10.0" is intended to include all subranges between the listed minimum value of 1.0 and the listed maximum value of 10.0 (and including the listed minimum value of 1.0 and the listed maximum value of 10.0), that is, a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as, for example, 2.4 to 7.6. Any maximum numerical limit listed herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit listed in this specification is intended to include all higher numerical limits contained therein. Therefore, the applicant reserves the right to amend this specification (including claims) to explicitly list any subranges contained within the range explicitly listed herein.

[0050] Referring to two compared elements, features, etc. as "the same" may mean that they are identical or substantially identical. Thus, the phrases "the same" or "substantially the same" may include variations that are considered low in the art, for example, 5% or less. Furthermore, when a parameter is referred to as being consistent in a given region, this may mean that it is consistent with respect to the average value.

[0051] Throughout the specification, unless otherwise specified, each element may be in the singular or in the plural.

[0052] When any element is referred to as being arranged (or positioned or placed) "above (or below)" a component or as being arranged (or positioned or placed) "on (or below)" a component, this may mean that the element is placed in contact with the upper surface (or lower surface) of the component, and may also mean that another component may be interposed between the component and the element arranged (or positioned or placed) above (or below) the component.

[0053] Furthermore, it should be understood that when an element is referred to as being “coupled,” “linked,” or “connected” to another element, the elements may be directly “coupled,” “linked,” or “connected” to each other, or one or more intervening elements may be present therebetween, through which the element may be “coupled,” “linked,” or “connected” to the other element. Furthermore, when a component is referred to as being “electrically coupled” to another component, the component may be directly electrically connected to the other component, or one or more intervening components may be present therebetween, such that the component and the other component are indirectly electrically connected to each other.

[0054] Throughout this specification, unless otherwise indicated, when "A and / or B" is stated, it means A; B; or A and B. In other words, "and / or" includes any or all combinations of the listed items. Unless otherwise indicated, when "C to D" is stated, it means C or more and D or less.

[0055] The terms used in this specification are used to describe the embodiments of the present disclosure and are not intended to limit the present disclosure.

[0056] Figure 1 is a plan view schematically illustrating a fire extinguishing device for an energy storage system according to an embodiment of the present disclosure; and Figure 2 Schematically shows a front view of a fire extinguishing device for an energy storage system according to an embodiment of the present disclosure. Figure 1 and Figure 2 The fire extinguishing device 1 for an energy storage system according to an embodiment of the present disclosure includes a storage tank 10 , a supply unit (ie, supplier) 20 , a distribution unit (ie, distributor) 30 , a rack pipe 40 and a spray pipe 50 .

[0057] The storage tank 10 can be positioned behind the rack frames 100 and can store a fire extinguishing agent. The fire extinguishing agent stored in the storage tank 10 can include one or more of argon, nitrogen, and carbon dioxide. When carbon dioxide is used as the fire extinguishing agent, it can be liquefied and stored at low temperatures and high pressures. The storage tank 10 can be installed inside or outside a housing in which the multiple rack frames 100 are housed. The storage tank 10 can supply the fire extinguishing agent to a pair of rack frames 100. In embodiments, the storage tank 10 can supply the fire extinguishing agent to three or more rack frames 100.

[0058] The supply unit 20 may be connected to the storage tank 10 and may supply the fire extinguishing agent. In an embodiment, the supply unit 20 may be connected to a lower portion of the storage tank 10 to discharge the fire extinguishing agent stored in the storage tank 10.

[0059] The distributing unit 30 may be connected to the supply unit 20 to distribute the fire extinguishing agent. The distributing unit 30 may distribute the fire extinguishing agent so that the fire extinguishing agent supplied from the rear flows in both left and right directions or in one direction.

[0060] The rack pipe 40 may be connected to the distribution unit 30 and may change the flow direction of the fire extinguishing agent to a height direction of the rack frame 100. The rack pipe 40 may be provided at the rear or front of each rack frame 100.

[0061] The spray pipe 50 may be connected to the rack pipe 40 and may spray the fire extinguishing agent onto each battery module 200 in the rack frame 100 (e.g., built into the rack frame 100). In an embodiment, a plurality of spray pipes 50 may be arranged in a vertical or longitudinal direction of the rack frame 100 and may be provided above each battery module 200. Spray holes may be formed in the spray pipe 50, and the spray holes may be opened when a fire occurs.

[0062] Figure 3 Schematically illustrates a supply unit according to an embodiment of the present disclosure. Figure 3 , the supply unit 20 according to an embodiment of the present disclosure may include a supply pipe 21 and a supply pump 22 .

[0063] The supply pipe 21 may connect the storage tank 10 and the dispensing unit 30. In an embodiment, the supply pipe 21 may be connected to the bottom of the storage tank 10 and may guide the fire extinguishing agent stored in the storage tank 10 to the dispensing unit 30 when a fire occurs in the battery module 200.

[0064] The supply pump 22 may be positioned on the supply pipe 21 and may discharge the fire extinguishing agent stored in the storage tank 10. When power is applied, the supply pump 22 may be driven to pump the fire extinguishing agent stored in the storage tank 10 toward the dispensing unit 30. In an embodiment, the storage tank 10 may be disposed higher than the supply pump 22 to prevent or substantially prevent overloading when the supply pump 22 is driven.

[0065] In an embodiment, the supply pipe 21 may include a first supply pipe 211 and a second supply pipe 212 .

[0066] The first supply pipe 211 may connect the storage tank 10 and the supply pump 22. When the supply pump 22 is disposed below the storage tank 10, the upper end of the first supply pipe 211 may be connected to the lower portion of the storage tank 10, and the lower end of the first supply pipe 211 may be connected to the supply pump 22.

[0067] The second supply pipe 212 may extend from the supply pump 22 between the rack pipes 40 and may be connected to the dispensing unit 30. In an embodiment, the supply pump 22 is built into the supply pipe 21, and the second supply pipe 212 may be directly connected to the first supply pipe 211.

[0068] The supply unit 20 according to an embodiment of the present disclosure may further include a supply valve 23. The supply valve 23 may be located on the supply pipe 21 and may prevent or substantially prevent backflow of the fire extinguishing agent. In an embodiment, the supply valve 23 may be a check valve that allows one-way flow of fluid.

[0069] Figure 4 : is a view schematically showing a state in which a supply pipe according to an embodiment of the present disclosure is provided between a pair of frame frames. Figure 4 , the supply pipe 21 may be provided between a pair of adjacent rack frames 100. The storage tank 10 may be provided behind the pair of rack frames 100, and the supply pipe 21 connected to the storage tank 10 may be provided between the pair of rack frames 100 and connected to the distribution unit 30 spanning the pair of rack frames 100. In this manner, the fire extinguishing agent can be quickly supplied in the direction of the rack frames 100 provided on the left and right sides of the supply pipe 21.

[0070] Figure 5 : is a view schematically showing a state in which a supply pipe according to an embodiment of the present disclosure is provided at a center portion of a plurality of rack frames arranged in a row. Figure 5 , multiple supply pipes 21 can be installed at the center of multiple rack frames 100 arranged in a row. For example, when four rack frames 100 are arranged in a row, the rack frames can be designated as the first rack frame to the fourth rack frame from left to right. Storage tanks 10 can be installed behind the four rack frames 100, and supply pipes 21 connected to the storage tanks 10 can be installed between the second and third rack frames and connected to the distribution unit 30 that spans the rack frames 100. In this way, fire extinguishing agent can be quickly supplied to the multiple rack frames 100 located on both the left and right sides of the supply pipes 21.

[0071] Figure 6 is a plan view schematically illustrating a dispensing unit according to an embodiment of the present disclosure; and Figure 7 Schematically shows a front view of a dispensing unit according to an embodiment of the present disclosure. Figure 6 and Figure 7 , the dispensing unit 30 according to an embodiment of the present disclosure may include a dispensing pipe 31 and a dispensing valve 32 .

[0072] The distribution pipe 31 may be connected to the supply unit 20, disposed across the rack frame 100, and connected to the rack pipe 40. The distribution pipe 31 may be disposed at the rear of the rack frame 100. Alternatively, the distribution pipe 31 may be disposed at the front of the rack frame 100. The distribution pipe 31 may be connected to the second supply pipe 212. The distribution pipe 31 may be disposed at the same height as the second supply pipe 212, or may be disposed lower than the second supply pipe 212.

[0073] A distribution valve 32 can be positioned on the distribution pipe 31 and can distribute the fire extinguishing agent. The distribution valve 32 can connect the second supply pipe 212 and the distribution pipe 31. In an embodiment, the distribution valve 32 can be a three-way valve that distributes the fire extinguishing agent flowing from the second supply pipe 212 to the left and right sides. The distribution valve 32 can distribute the fire extinguishing agent in one direction or in two directions, and the distribution ratio between the two directions can be adjusted as needed.

[0074] The distribution unit 30 can be positioned between the lowest and highest points of the rack frame 100. The distribution unit 30 can be positioned across the rack frame 100 at a height between the lowest and highest points. In an embodiment, the distribution pipe 31 or the distribution valve 32 can be positioned between 50% and 90% of the height of the rack frame 100. In other words, the distribution pipe 31 or the distribution valve 32 can be positioned between the middle height of the rack frame 100 and a height 10% lower than the highest point of the rack frame 100.

[0075] Figure 8 Schematically illustrates a sensor according to an embodiment of the present disclosure. The fire extinguishing device 1 for an energy storage system according to an embodiment of the present disclosure may further include a sensor 60 and a controller 70 .

[0076] The sensor 60 may detect a fire in the battery module 200 , and the controller 70 may control the supply unit 20 and the distribution unit 30 to adjust the flow rate of the fire extinguishing agent according to a detection signal of the sensor 60 .

[0077] The sensor 60 may be provided on the rack pipe 40. The rack pipe 40 may have a length in the height direction of the rack frame 100, and the sensor 60 may detect a fire in the battery module 200 mounted on the rack frame 100 in the vertical direction. The sensor 60 may detect a fire in each battery module 200. The sensor 60 may detect the temperature, smoke, or flame of the battery module 200. In an embodiment, the sensor 60 may be provided on the injection pipe 50 (see FIG. 1 ). Figure 1 )superior.

[0078] Figure 9 is a flow chart schematically illustrating a fire extinguishing method for an energy storage system according to an embodiment of the present disclosure; Figure 10 is a diagram schematically illustrating a one-way fire according to an embodiment of the present disclosure; and Figure 11 FIG is a diagram schematically illustrating a two-way fire according to an embodiment of the present disclosure. Figures 9 to 11 as well as Figure 1 and Figure 8 A fire extinguishing method for an energy storage system according to an embodiment of the present disclosure is described.

[0079] In the detecting operation S10, the sensor 60 may detect a fire in the battery modules 200 stored in the rack frame 100. The sensor 60 may be mounted on the rack pipe 40 provided in a vertical direction of the rack frame 100 and may detect a fire in each of the plurality of battery modules 200.

[0080] The storage tank 10 may be disposed behind the plurality of racks 100, and the supply unit 20, which supplies the fire extinguishing agent stored in the storage tank 10, may guide the fire extinguishing agent between the plurality of racks 100. In an embodiment, the supply unit 20 may be disposed at the center of the racks 100 arranged horizontally in a row, and the controller 70 may determine whether the fire is a one-way fire or a two-way fire based on the detection signal transmitted from each sensor 60. A one-way fire may refer to a fire occurring in either the left or right direction of the supply unit 20. A two-way fire may refer to a fire occurring in both the left and right directions of the supply unit 20.

[0081] In the supply operation S20, when the sensor 60 detects a fire, the fire extinguishing agent stored in the storage tank 10 provided behind the rack 100 may be supplied by the supply unit 20. When the sensor 60 detects a fire, the controller 70 may forcibly discharge the fire extinguishing agent stored in the storage tank 10 by driving the supply pump 22. The supply unit 20 may supply the fire extinguishing agent between a pair of adjacent racks 100.

[0082] In the dispensing operation S30, the fire extinguishing agent may be dispensed by the dispensing unit 30 connected to the supply unit 20 and disposed across the racks 100. When the supply unit 20 guides the fire extinguishing agent between the racks 100, the dispensing unit 30 may distribute the flow of the fire extinguishing agent in either the left or right direction according to the fire situation.

[0083] In the event of a one-way fire, distribution unit 30 can allow the fire extinguishing agent to flow in only one direction. For example, if a fire occurs in a battery module 200 provided in rack frame 100 located to the left of supply unit 20, the fire extinguishing agent directed to supply unit 20 can be moved to the left by distribution unit 30, while its movement to the right can be restricted. In this way, a large amount of fire extinguishing agent can be quickly supplied to the left.

[0084] In the event of a bidirectional fire, the distribution unit 30 can allow the fire extinguishing agent to flow in two directions, two directions, or opposite directions. For example, if a fire occurs in the battery modules 200 provided in the racks 100 arranged on both sides of the supply unit 20, the fire extinguishing agent guided to the supply unit 20 can be moved leftward and rightward through the distribution unit 30. In this way, the fire extinguishing agent can be quickly supplied to the left and right.

[0085] In an embodiment, the distribution ratio of the fire extinguishing agent may be varied according to the number of battery modules 200 in which the fire occurs. As an example, when a fire occurs in one battery module 200 on the left side of the supply unit 20 and a fire occurs in two battery modules 200 on the right side, the distribution unit 30 may adjust the supply amount of the fire extinguishing agent to move leftward and rightward at a ratio of 1:2.

[0086] In the spraying operation S40, the spraying pipe 50 connected to the rack frame 100 may spray the fire extinguishing agent. The spraying pipe 50 may be connected to the rack pipe 40 arranged in the height direction of the rack frame 100 and may be arranged above each battery module 200. When a fire occurs in the battery module 200, the spraying pipe 50 may open the nozzle. A sensor 60 may be additionally provided on each spraying pipe 50.

[0087] Figure 12 : is a graph comparing the arrival time of the fire extinguishing agent of the fire extinguishing device for the energy storage system according to the embodiment of the present disclosure with the arrival time of the fire extinguishing agent of the traditional fire extinguishing device. Figure 12 , it is assumed that the conventional fire extinguishing apparatus of the related art is a fire extinguishing apparatus in which the fire extinguishing agent is supplied from the right side of the right frame among the two frames, and the fire extinguishing apparatus according to the present disclosure is a fire extinguishing apparatus in which the fire extinguishing agent is supplied from the center portion of the two frames 100.

[0088] When stored in two rack frames 100 (see Figure 11 ), in the fire extinguishing apparatus according to the present disclosure, the fire extinguishing agent supplied to the center portion of the two rack frames 100 is distributed to both sides or opposite sides, and after 100 seconds, the fire extinguishing agent is sprayed onto each battery module 200. On the other hand, in the conventional fire extinguishing apparatus, the fire extinguishing agent is first sprayed onto the battery modules arranged on the right side of the two rack frames after 50 seconds. Then, after 220 seconds, the fire extinguishing agent is secondarily sprayed onto the battery modules arranged on the left side of the two rack frames.

[0089] Therefore, compared with the conventional fire extinguishing device, the fire extinguishing device according to the present disclosure shortens the time taken for the fire extinguishing agent to reach the fire point and increases the injection amount of the fire extinguishing agent, thereby quickly handling the fire.

[0090] Figure 13This diagram schematically illustrates the arrival time of fire extinguishing agent according to the height of the distribution unit when a fire is detected at the lower ends of a pair of rack pipes according to an embodiment of the present disclosure. When a fire occurs in each battery module 200 located at the lowest point of two rack frames 100, the arrival time of fire extinguishing agent from the distribution unit 30 located at 50% of the height of the rack frame 100 is faster than the arrival time of fire extinguishing agent from the distribution unit 30 located at 70% and 90% of the height of the rack frame 100. In other words, when a fire occurs at the lowest point, the most effective fire extinguishing operation is achieved when fire extinguishing agent is distributed from the distribution unit 30 located at 50% of the height of the relatively lowest rack frame 100.

[0091] Figure 14 This diagram schematically illustrates the arrival time of fire extinguishing agent according to the height of the distribution unit when a fire is detected at the upper ends of a pair of rack pipes according to an embodiment of the present disclosure. When a fire occurs in each battery module 200 located at the highest point of two rack frames 100, the arrival time of fire extinguishing agent from the distribution unit 30 located at 90% of the height of the rack frame 100 is faster than the arrival time of fire extinguishing agent from the distribution unit 30 located at 50% and 70% of the height of the rack frame 100. In other words, when a fire occurs at the highest point, the most effective fire extinguishing operation is achieved when fire extinguishing agent is distributed from the distribution unit 30 located at 90% of the height of the relatively highest rack frame 100.

[0092] exist Figure 13 and Figure 14 As can be seen from the figure, when the height of the distribution unit 30 is 50% to 90% of the height of the frame 100, the arrival time of the fire extinguishing agent and the injection amount of the fire extinguishing agent are optimized.

[0093] In the fire extinguishing device and method for an energy storage system according to an embodiment of the present disclosure, the fire extinguishing agent stored in a storage tank positioned at the rear of a plurality of racks can be supplied to the central portion of a plurality of racks arranged in a row and then distributed, thereby quickly spraying the fire extinguishing agent when a one-way or two-way fire occurs.

[0094] In the fire extinguishing apparatus and method for an energy storage system according to one or more embodiments of the present disclosure, a supply unit provided below the storage tank may forcibly pump the fire extinguishing agent and supply the fire extinguishing agent between the rack pipes.

[0095] In the fire extinguishing apparatus and method for an energy storage system according to one or more embodiments of the present disclosure, the distribution unit can be set at 50% to 90% of the height of the frame, so as to quickly spray the fire extinguishing agent when a fire occurs in the battery modules arranged at various positions of the frame.

[0096] However, aspects and effects obtained through the present disclosure are not limited to the above aspects and effects, and those skilled in the art will clearly understand other technical aspects and effects not mentioned from the description of the present disclosure.

[0097] Although the present disclosure has been described with reference to some embodiments shown in the drawings, these embodiments are merely illustrative, and it is understood that those skilled in the art can derive various modifications and other equivalent embodiments based on the embodiments.

Claims

1. A fire extinguishing device for an energy storage system, the fire extinguishing device comprising: a storage tank positioned at the rear of the frame and storing the fire extinguishing agent; a supplier connected to the storage tank and configured to supply the fire extinguishing agent; a dispenser connected to the supply and configured to dispense the fire extinguishing agent; a rack pipe connected to the distributor and configured to change the flow direction of the fire extinguishing agent to a height direction of the rack frame; and A spray pipe is connected to the rack pipe and is configured to spray the fire extinguishing agent onto each battery module in the rack frame.

2. The fire extinguishing device according to claim 1, wherein the supplier comprises: a supply pipe connecting the storage tank and the dispenser; as well as A supply pump is located on the supply pipe to discharge the fire extinguishing agent stored in the storage tank.

3. The fire extinguishing apparatus according to claim 2, wherein the storage tank is positioned higher than the supply pump.

4. The fire extinguishing device according to claim 2, wherein the supply pipe comprises: a first supply pipe connecting the storage tank and the supply pump; as well as A second supply pipe extends from the supply pump between the rack pipes and is connected to the distributor. 5 . The fire extinguishing device according to claim 2 , wherein the supplier further comprises a supply valve located on the supply pipe to prevent backflow of the fire extinguishing agent.

6. The fire extinguishing apparatus according to claim 2, wherein the supply pipe is located between a pair of adjacent frames.

7. The fire extinguishing apparatus according to claim 2, wherein the supply pipe is located at a central portion of a plurality of frames arranged in a row.

8. The fire extinguishing device of claim 1, wherein the dispenser comprises: a distribution pipe connected to the supplier, arranged to span the rack frame, and connected to the rack pipe; and A distribution valve is located on the distribution pipe to distribute the fire extinguishing agent. 9 . The fire extinguishing apparatus according to claim 8 , wherein the distributing valve distributes the fire extinguishing agent supplied from the supplier in two directions.

10. The fire extinguishing device of claim 8, wherein the distributor is located between a low point and a high point of the frame.

11. The fire extinguishing device according to claim 10, wherein the distributor is positioned between 50% and 90% of the height of the frame.

12. The fire extinguishing device according to claim 1, further comprising: a sensor configured to detect a fire in the battery module; and A controller is configured to control the supplier and the distributor according to the detection signal of the sensor to adjust the flow rate of the fire extinguishing agent.

13. The fire extinguishing device according to claim 12, wherein the sensor is located on the rack pipe.

14. The fire extinguishing device of claim 12, wherein the sensor is configured to detect temperature, smoke, or flame.

15. A fire extinguishing method for an energy storage system, the fire extinguishing method comprising: detecting, by a sensor, a fire in one or more battery modules stored in a rack; When the sensor detects a fire, a fire extinguishing agent stored in a storage tank positioned at the rear of the frame is supplied through a supplier; distributing the fire extinguishing agent via a dispenser connected to the supply and positioned across the frame; and The fire extinguishing agent is sprayed through a spray pipe connected to the frame. 16 . The fire extinguishing method according to claim 15 , wherein in the detecting, a one-way fire or a two-way fire is detected based on the supplier.

17. The fire extinguishing method according to claim 16, wherein the supplier supplies the fire extinguishing agent between a pair of adjacent frames.

18. The fire extinguishing method according to claim 16, wherein in the case of the one-way fire, the distributor allows the fire extinguishing agent to flow in only one direction.

19. The fire extinguishing method according to claim 16, wherein in the case of the bidirectional fire, the distributor allows the fire extinguishing agent to flow in both directions.

20. The fire extinguishing method according to claim 19, wherein the distribution ratio of the fire extinguishing agent is changed according to the number of battery modules in which the fire occurs.

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