Energy storage system

Abstract

An energy storage system includes: a battery rack including a frame and a plurality of battery modules accommodated in the frame; a main pipe in the battery rack; and a fire extinguishing agent tank and a sensor selectively connected to the main pipe. When the sensor is connected to the main pipe, the sensor is configured to sense an event in the battery rack by drawing air from the main pipe.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2024-0035711 filed in the Korean Intellectual Property Office on March 14, 2024, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] Aspects of the embodiments relate to an energy storage system. Background Art

[0004] A secondary battery is an energy storage system that can store electrical energy as chemical energy. Unlike primary batteries, which are designed not to be recharged, secondary batteries are designed to be charged and discharged. Secondary batteries are used in IT equipment such as smartphones, mobile phones, laptops, and tablet computers. In recent years, there has been growing interest in electric vehicles that reduce environmental pollution. Therefore, secondary batteries are also used in electric vehicles that require characteristics such as high density, high power, and stability.

[0005] The information disclosed in this section is provided only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute prior art. Summary of the Invention

[0006] An embodiment of the present disclosure provides an energy storage system.

[0007] An energy storage system according to an embodiment of the present disclosure includes: a battery rack including a rack frame and a plurality of battery modules housed within the rack frame; a main pipe within the battery rack; and a fire extinguisher tank and a sensor selectively connected to the main pipe. When the sensor is connected to the main pipe, the sensor is configured to sense an event within the battery rack by drawing air from the main pipe.

[0008] Each of the plurality of battery modules may include a fire extinguishing pipe, and a main pipe may be connected to each of the fire extinguishing pipes such that air sucked from an end of the fire extinguishing pipe is transferred to the main pipe.

[0009] Each of the plurality of battery modules may further include a plurality of battery cells, and the fire extinguishing pipe may extend along one side of the plurality of battery cells.

[0010] The energy storage system may further include a one-way valve coupled to an end portion of each of the fire extinguishing pipes.

[0011] The one-way valve may include a check valve.

[0012] The one-way valve may include a first body, a second body, and an opening / closing plate. The first body may be connected to an end of the fire extinguishing pipe, the second body may be opposite to the first body, and the opening / closing plate may be arranged in a groove between the first body and the second body.

[0013] The opening / closing plate may be configured to move in one direction corresponding to a direction in which the fluid is incident on the opening / closing plate.

[0014] When air is transferred from the outside of the second body to the one-way valve, the opening / closing plate may move toward the first body to expose the groove.

[0015] When the opening / closing plate moves from the second body toward the first body, air may be delivered to the sensor through the fire extinguishing pipe and the main pipe.

[0016] When the sensor senses an event, the opening / closing plate may move toward the second body so that the slot is closed by the opening / closing plate.

[0017] The fire extinguishing agent may be configured to be delivered from the fire extinguishing agent tank through the main pipe to the fire extinguishing pipe.

[0018] The fire extinguishing agent may not move to the second body due to the opening / closing plate.

[0019] The fire extinguishing pipe may include a pipe member and a sealing member, the pipe member may extend along one side of the battery cell, and the sealing member may be at a position corresponding to at least one vent of the battery cell.

[0020] The pipe member may include a fire extinguishing agent hole, the fire extinguishing agent hole may be at a position corresponding to at least one vent of the battery cell, and the sealing member may seal the fire extinguishing agent hole.

[0021] The sealing member may have a groove at a position corresponding to the fire extinguishing agent hole, and a thickness of the sealing member at the groove may be thinner than a thickness of other regions of the sealing member.

[0022] An energy storage system according to one embodiment of the present disclosure includes: a battery rack including a frame and a plurality of battery modules housed therein; a main pipe within the battery rack; a fire extinguisher tank and a sensor selectively connected to the main pipe; a fire extinguisher pipe located on at least one of the plurality of battery modules and connected to the main pipe; and a one-way valve coupled to the end of the fire extinguisher pipe. The one-way valve includes a first body connected to the end of the fire extinguisher pipe, a second body opposing the first body, and an open / close plate disposed in a groove between the first and second bodies. Smoke generated in the battery rack or fire extinguisher supplied from the fire extinguisher tank moves within the fire extinguisher pipe according to the movement of the open / close plate.

[0023] When the smoke is at the end of the fire extinguishing pipe, the smoke can be transmitted to the sensor through the fire extinguishing pipe and the main pipe, and when the sensor senses an event in the battery rack, the fire extinguishing agent in the fire extinguishing agent tank can be delivered to the fire extinguishing pipe through the main pipe.

[0024] When smoke is admitted to the one-way valve from outside the second body, the opening / closing plate can move toward the first body so that the groove is exposed through the opening / closing plate, the smoke moves from the second body to the first body, and the smoke is transmitted to the sensor through the fire extinguishing pipe and the main pipe.

[0025] When the sensor senses an event, the opening / closing plate may be moved toward the second body so that the slot is closed by the opening / closing plate and the fire extinguishing agent is not transferred to the second body due to the opening / closing plate.

[0026] The fire extinguishing pipe may include a pipe member and a sealing member, the pipe member may have a fire extinguishing agent hole, the sealing member may be configured to be melted by an event, and the fire extinguishing agent hole may be exposed due to the melting of the sealing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings incorporated in this specification illustrate preferred embodiments and are used to further illustrate the technical concept of the present disclosure in conjunction with the detailed description of the exemplary embodiments below, and the present disclosure should not be construed as being limited to the contents shown in such drawings. In the drawings:

[0028] Figure 1 is a schematic diagram of an energy storage system according to an embodiment.

[0029] Figure 2 yes Figure 1 Magnified view of area A in FIG.

[0030] Figure 3 This is a view of the fire extinguishing pipe connected to the frame.

[0031] Figure 4a yes Figure 3 A view of a fire extinguishing pipe is shown in FIG.

[0032] Figure 4b yes Figure 4a Magnified view of area B in FIG.

[0033] Figure 4c is a schematic plan view of a fire extinguishing pipe to which a sealing member is coupled according to an embodiment.

[0034] Figure 5a is a view of a one-way valve according to an embodiment.

[0035] Figure 5b and Figure 5c is a description Figure 5a A schematic cross-sectional view of the operation of the one-way valve is shown in FIG. DETAILED DESCRIPTION

[0036] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Terms or words used in this specification and claims are not limitedly interpreted as ordinary meanings or dictionary meanings, and should be interpreted as meanings and concepts consistent with the technical idea of ​​the present disclosure based on the principle that the inventor can be his / her own lexicographer to appropriately define terminology concepts to best describe his / her invention.

[0037] The embodiments described in this specification and the configurations shown in the accompanying drawings are only some embodiments of the present disclosure and do not represent all technical spirits, aspects and features of the present disclosure. Therefore, it should be understood that at the time of filing this application, various equivalents and modifications that can replace or modify the embodiments described herein may exist.

[0038] It will 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 also 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, no intervening elements or layers are present. For example, when a first element is described as being “coupled” or “connected” to a second element, the first element can be directly coupled or connected to the second element, or the first element can be indirectly coupled or connected to the second element via one or more intervening elements.

[0039] In the drawings, for clarity of illustration, the sizes of various elements, layers, etc. can be magnified. The same reference numerals indicate the same elements. As used herein, the term "and / or" includes any and all combinations of one or more associated enumerated items. Further, the use of "may" when describing an embodiment of the present disclosure relates to "one or more embodiments of the present disclosure." Expressions such as "at least one of..." and "any one of..." before a list of elements modify the entire list of elements and do not modify a single element in the list. When a phrase such as "at least one of A, B, and C," "at least one of A, B, or C," "at least one selected from the group of A, B, and C," or "at least one selected from A, B, and C" is 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” may be considered synonymous with the terms “utilize,” “utilizing,” and “utilized.” As used herein, the terms “substantially,” “about,” and similar terms are used as terms of approximation rather than terms of degree, and are intended to take into account the inherent variations in measured or calculated values ​​that one of ordinary skill in the art would recognize.

[0040] It will be understood that although the terms "first," "second," "third," etc. are used herein to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. Thus, a first element, component, region, layer, or section discussed below could be termed a second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0041] For ease of description, spatially relative terms such as "below," "beneath," "below," "above," and "on" may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. It will 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 figures is flipped, an element described as being "below" or "beneath" other elements or features may then be oriented "above" or "above" the other elements or features. Thus, the term "below" may encompass both above and below. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0042] 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 forms "a" and "an" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "includes," "including," "comprises," and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, parts, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or groups thereof.

[0043] In addition, any numerical range disclosed and / or recorded herein is intended to include all sub-ranges of the same numerical precision contained in the range of the record. For example, the range of "1.0~10.0" is intended to include all sub-ranges between (and including) the minimum value 1.0 and the maximum value 10.0 of the record, 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 2.4~7.6. Any maximum numerical limit recorded herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit recorded in this specification is intended to include all higher numerical limits contained therein. Therefore, the applicant reserves the right to amend this specification including the claims to expressly record any sub-range contained within the range expressly recorded herein. All such ranges are intended to be inherently described in this specification so that the modifications made to expressly record any such sub-ranges will meet the requirements.

[0044] Referring to two compared elements, features, etc. as "the same" may mean that they are "substantially the same." Thus, the phrase "substantially the same" may include situations with what is considered in the art to be low variance, for example, less than 5%. 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.

[0045] Throughout the specification, unless otherwise stated, each element may be in the singular or in the plural.

[0046] Arranging an arbitrary element "on (or below)" or "over (under)" another element may mean that the arbitrary element may be set to be in contact with the upper (or lower) surface of the element, and another element may also be interposed between the element and any element set above (or below) the element.

[0047] Further, it will be understood that when a component is referred to as being “linked,” “coupled” or “connected” to another component, the components can be directly “coupled,” “linked” or “connected” to each other or other components may be “interposed” between the components.

[0048] Throughout the specification, when "A and / or B" is stated, it means A, B, or A and B, unless otherwise stated. That is, "and / or" includes any or all combinations of the listed items. When "C to D" is stated, it means C above and D below, unless otherwise indicated.

[0049] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0050] See also Figures 1 to 3 The energy storage system 100 according to an embodiment of the present disclosure may include at least one battery rack 110, a fire extinguishing agent tank 120, and a sensor 130. The fire extinguishing agent tank 120 and the sensor 130 may be connected to the battery rack 110 via a fire extinguishing pipe.

[0051] Each battery rack 110 may include a rack frame 111 and a plurality of battery modules 112. The battery modules 112 may be accommodated in the rack frame 111.

[0052] The frame 111 may include (or may be formed with) accommodation spaces divided (or spaced apart) at regular intervals. A plurality of battery modules 112 may be accommodated in the frame 111. A circuit board may be coupled to the rear of the frame 111. The circuit board may include a module battery management system (BMS). Thus, the battery modules 112 may be sensed (e.g., monitored) and controlled by the circuit board.

[0053] The battery module 112 may include multiple battery cells. The battery cells may be connected in series, in parallel, or in series / parallel depending on the desired output. Each battery cell may include a housing and an electrode assembly within the housing. The electrode assembly may include a positive electrode plate and a negative electrode plate, each of which has a coated portion on which an active material is coated. In addition, a separator may be disposed between the positive electrode plate and the negative electrode plate. The electrode assembly may be formed by winding, stacking, or lamination. The upper portion of the housing may be sealed by a cover plate. The positive electrode plate and the negative electrode plate may each have an uncoated portion. The electrode terminal may be electrically connected to the uncoated portion of at least one of the positive electrode plate and the negative electrode plate. The electrode terminal may be exposed to the upper portion of the cover plate (or exposed above the upper portion of the cover plate). In addition, a vent may be formed in the center of the cover plate. The vent may be formed to be thinner than other areas of the cover plate. When the internal pressure of the battery cell rises above a reference pressure, the vent may open (e.g., the vent may rupture). Accordingly, gas may be released to the outside. Thus, the battery cell may be prevented from exploding.

[0054] The battery modules 112 may also be connected in series, in parallel, or in series / parallel, so that the battery rack 110 can generate a desired output (eg, a desired electrical output).

[0055] The main pipe 113 may be formed in each battery rack 110. The main pipe 113 may be formed in a partial area of ​​the battery rack 110. For example, the main pipe 113 may be provided at the upper portion of the battery rack 110 (or on the upper portion of the battery rack 110) and may extend in the longitudinal direction of the battery rack 110. The main pipe 113 may be connected to a fire extinguishing pipe 115. One fire extinguishing pipe 115 may be formed in each battery module 112. The fire extinguishing pipe 115 may be formed (or extend) along one side of a plurality of battery cells. A one-way valve 116 may be coupled to one end of the fire extinguishing pipe 115. The one-way valve 116 may be configured to move fluid in only one direction (or allow fluid to move in only one direction). Therefore, the battery module 112 may draw air into the fire extinguishing pipe 115 during normal operation. The air drawn into the fire extinguishing pipe 115 of each battery module 112 may be collected in the main pipe 113. In addition, the main pipe 113 may be connected to the sensor 130. The sensor 130 may sense smoke (eg, may determine the presence of smoke) by drawing air from the battery rack 110 (or by monitoring the drawn air).

[0056] When an event such as a fire occurs in the battery rack 110, the main pipe 113 may be filled with a fire extinguishing agent. The main pipe 113 may be connected to the fire extinguishing agent tank 120. Thus, the fire extinguishing agent may be delivered to the fire extinguishing pipe 115. Thus, the fire extinguishing agent may be appropriately sprayed to a specific battery cell of the battery module 112 where the event is occurring.

[0057] The main pipe 113 may include a main pipe valve 114 corresponding to each battery module 112. The main pipe valve 114 may include (or may be) a solenoid valve. The main pipe valve 114 may be formed at each connection portion of each battery module 112. The main pipe valve 114 may be open during normal operation. Therefore, air drawn from the fire extinguishing pipe 115 of each battery module 112 can be delivered to the sensor 130 through the main pipe 113.

[0058] When an incident occurs, the fire extinguishing agent can be delivered only to the battery module 112 where a fire is occurring (or has occurred) through the main valve 114. Due to the main valve 114, the fire extinguishing agent is not delivered to the battery rack 110 where no fire has occurred. Therefore, the fire extinguishing agent is delivered only to the battery module 112 where the incident occurred. Accordingly, the fire extinguishing agent can quickly fill the fire extinguishing pipe 115 of the battery module 112 where the incident occurred.

[0059] A fire extinguishing pipe 115 may be formed on each battery module 112 of each battery rack 110. The fire extinguishing pipe 115 may be coupled to the main pipe 113. As described above, a one-way valve 116 may be coupled to the end of each fire extinguishing pipe 115. Therefore, air can be drawn only in a direction from the battery rack 110 toward the interior of the fire extinguishing pipe 115. Furthermore, when an incident occurs, the fire extinguishing agent can be sprayed toward the battery cells without leaking from the fire extinguishing pipe 115.

[0060] The fire extinguishing pipe 115 may include a pipe member 115a and a sealing member 115c. The sealing member 115c may be coupled to a set area of ​​the pipe member 115a.

[0061] See also Figure 4a to Figure 4c , the tube member 115a may extend along one side of the battery cell and have a fire extinguishing agent hole (or fire extinguishing agent opening) 115b. A plurality of fire extinguishing agent holes 115b may be formed at positions corresponding to each battery cell, respectively. The sealing member 115c may be at a position corresponding to at least one exhaust member in the battery cell and surround (or seal) each fire extinguishing agent hole 115b. Therefore, it is possible to prevent (or block) the air or fire extinguishing agent filled in the fire extinguishing tube 115 from being inhaled or ejected through the fire extinguishing agent hole 115b during normal operation.

[0062] When an event occurs in a specific battery cell, the exhaust member of the corresponding battery cell can be opened. Accordingly, the high-temperature gas can be discharged to the outside of the battery cell. The heat generated by the gas can be transferred to the fire extinguishing pipe 115. Accordingly, the sealing member 115c heated by the discharged high-temperature gas can melt. Therefore, the fire extinguishing agent hole 115b can be exposed due to the melting of the sealing member 115c. Accordingly, the fire extinguishing agent can be sprayed to the battery cell where the event is occurring or has occurred (or sprayed towards the battery cell) through the fire extinguishing agent hole 115b. Therefore, the fire extinguishing agent can be sprayed only at meaningful locations (for example, only at the location of the battery cell experiencing the event). Since the fire extinguishing agent is only gathered and sprayed at meaningful locations, the fire can be extinguished at an early stage (for example, before the fire develops).

[0063] For the above operation, the sealing member 115c may have a concave groove 115d. The groove 115d may correspond to the position where the fire extinguishing agent hole 115b is formed. The area of ​​the sealing member 115c where the groove 115d is formed may be thinner than other areas of the sealing member 115c. Therefore, the sealing member 115c can be more easily melted at the reference temperature to expose the fire extinguishing agent hole 115b.

[0064] The fire extinguishing agent tank 120 can store fire extinguishing agent. The fire extinguishing agent tank 120 can be connected to the main pipe 113 via a pipe. A tank valve 121 can be coupled to the inlet of the fire extinguishing agent tank 120. Therefore, the fire extinguishing agent tank 120 can be connected (e.g., fluidically connected) to the main pipe 113 only when an event occurs. For example, the tank valve 121 can include (or can be) a solenoid valve. The tank valve 121 is in a closed state during normal operation. Therefore, the fire extinguishing agent tank 120 is not connected to the main pipe 113 during normal operation. When an event occurs, the tank valve 121 opens. Therefore, the fire extinguishing agent tank 120 can be connected to the main pipe 113. Further, a separate pump can be coupled to supply the fire extinguishing agent to the main pipe 113.

[0065] The sensor 130 is a device configured to sense (e.g., monitor) smoke by drawing in air. For example, the sensor 130 may include a Very Early Smoke Detection Apparatus (VESDA) sensor. By sensing smoke through the sensor 130, it is possible to detect in real time whether an event has occurred in a battery cell of each battery module 112.

[0066] During normal operation, the sensor 130 may be connected to the main pipe 113 via a pipe. The sensor 130 may be separate from the fire extinguisher tank 120 and connected to the pipe via a branch pipe 131. For example, the sensor 130 and the fire extinguisher tank 120 may each be connected to the pipe via a branch pipe 131. However, the sensor 130 and the fire extinguisher tank 120 may be selectively connected to the branch pipe 131 via independently operated valves 132 and 121, respectively.

[0067] For example, sensor valve 132 may be normally open (e.g., may be open during normal operation). Sensor 130 may be connected to main pipe 113 via sensor valve 132 during normal operation. Accordingly, main pipe 113 may draw air from battery rack 110. Furthermore, sensor 130 may be used to determine whether an event has occurred. During normal operation, tank valve 121 may be closed. Therefore, fire extinguisher tank 120 may not be connected to main pipe 113 during normal operation.

[0068] When an event occurs, the sensor valve 132 may be closed. Thus, the sensor 130 may not be connected to the main pipe 113. In addition, the tank valve 121 may be opened. Thus, the fire extinguishing agent tank 120 may be connected to the main pipe 113. Thus, the fire extinguishing agent may be supplied to the main pipe 113 through the pipe.

[0069] Sensor 130 can be disposed outside battery rack 110. Therefore, sensor 130 is not affected by (or limited by) the space of battery rack 110. Furthermore, sensor 130 can draw air through main pipe 113 and fire extinguishing pipe 115. Therefore, sensor 130 can be easily installed. Furthermore, whether an event has occurred in battery rack 110 can be sensed (or determined) more quickly.

[0070] Hereinafter, the one-way valve 116 will be described in more detail.

[0071] See also Figure 2 、 Figure 5a and Figure 5b , a one-way valve 116 may be coupled to the end of the fire extinguishing pipe 115. The one-way valve 116 may be (or include) a check valve. The one-way valve 116 is a valve configured (or manufactured) to allow fluid to flow in only one direction (e.g., only in a predetermined direction).

[0072] The one-way valve 116 may include a first body 116a, a second body 116b, and an open / close plate 116c. The first body 116a may be disposed at (e.g., connected to) the end of the fire extinguishing pipe 115. The second body 116b may be disposed at a position opposite to the first body 116a. The open / close plate 116c may be located in a groove between the first body 116a and the second body 116b. The open / close plate 116c may open and close the fluid movement channel through the one-way valve 116. The open / close plate 116c may move in one direction (e.g., in a direction corresponding to the direction in which the fluid is incident on the open / close plate 116c) according to the direction of the fluid (e.g., according to the fluid pressure applied to the open / close plate).

[0073] See also Figure 5b , during normal operation, negative pressure can be applied from the first body 116a. Therefore, the opening / closing plate 116c can move in the direction of the first body 116a within the groove (for example, can move toward the first body 116a) to expose the groove. In this case, air from the outside of the second body 116b can pass through the through hole 116d formed inside the opening / closing plate 116c. Therefore, the air can be delivered to (for example, can be transmitted to) the first body 116a. For example, the air can flow through the one-way valve 116. Finally, the air can be delivered to the sensor 130 through the fire extinguishing pipe 115 and the main pipe 113. Therefore, during normal operation, smoke in the air can be sensed by the sensor 130. Accordingly, whether an event of the battery rack 110 occurs can be sensed.

[0074] See also Figure 5cWhen sensor 130 or another sensing device senses (or determines) that an event has occurred in battery rack 110, fire extinguishing agent can be delivered to main pipe 113 and fire extinguishing pipe 115. The fire extinguishing agent can be supplied from fire extinguishing agent tank 120. In this case, due to the pressure of the fire extinguishing agent, opening / closing plate 116c can move in the direction of second body 116b within the groove (e.g., can move toward second body 116b), so that the groove can be closed by opening / closing plate 116c. Accordingly, through hole 116d can be closed by opening / closing plate 116c. Thus, opening / closing plate 116c can close the flow path. Accordingly, the fire extinguishing agent inside first body 116a can not be delivered (e.g., can not be transferred to) second body 116b. Therefore, the fire extinguishing agent can be located only inside fire extinguishing pipe 115. Accordingly, the fire extinguishing agent can be sprayed into (or onto) the battery cell where the event occurred.

[0075] According to one embodiment, the energy storage system may include a one-way valve. The one-way valve may be formed at (or may be connected to) the end of the fire extinguishing pipe. When the energy storage system is operating normally, the air in the battery rack may be sucked in through the one-way valve. Therefore, the sensor may sense whether an event of a battery cell exists. When an event occurs in a battery cell, the fire extinguishing agent in the fire extinguishing agent tank may be supplied to the fire extinguishing pipe. Therefore, the restriction on the installation space of the sensor may be reduced. In addition, the event of a battery cell may be quickly sensed and the fire extinguishing agent may be supplied thereto.

[0076] The above is merely one embodiment for implementing the secondary battery according to the present disclosure. The present disclosure is not limited to the above embodiment, and the technical spirit of the present disclosure lies in that any one of ordinary technicians in the field to which the present disclosure belongs can make various modifications without departing from the main purpose of the present disclosure as claimed in the claims.

Claims

1. An energy storage system comprising: A battery rack, comprising a frame and a plurality of battery modules accommodated in the frame; a main supervisor, in said battery rack; as well as Fire extinguishing agent tanks and sensors, selectively connected to the main pipe, Wherein, when the sensor is connected to the main pipe, the sensor is configured to sense an event in the battery rack by drawing air from the main pipe.

2. The energy storage system according to claim 1, wherein each of the plurality of battery modules comprises a fire extinguishing pipe, and wherein the main pipe is connected to each of the fire extinguishing pipes so that air sucked from ends of the fire extinguishing pipes is delivered to the main pipe.

3. The energy storage system according to claim 2, wherein each of the plurality of battery modules further comprises a plurality of battery cells, and The fire extinguishing pipe extends along one side of the plurality of battery cells. 4 . The energy storage system according to claim 2 , further comprising a one-way valve coupled to an end of each of the fire extinguishing pipes. The energy storage system according to claim 4 , wherein the one-way valve comprises a check valve.

6. The energy storage system according to claim 4, wherein the one-way valve comprises a first body, a second body and an opening / closing plate, wherein the first body is connected to the end portion of the fire extinguishing pipe, wherein the second body is opposite to the first body, and The opening / closing plate is arranged in a groove between the first body and the second body. 7 . The energy storage system according to claim 6 , wherein the opening / closing plate is configured to move in one direction corresponding to a direction in which the fluid is incident on the opening / closing plate.

8. The energy storage system according to claim 6, wherein: When air is transferred from the outside of the second body to the one-way valve, the opening / closing plate moves toward the first body to expose the groove.

9. The energy storage system according to claim 8, wherein: When the opening / closing plate moves from the second body toward the first body, the air is transferred to the sensor through the fire extinguishing pipe and the main pipe.

10. The energy storage system according to claim 6, wherein: When the sensor senses an event, the opening / closing plate moves toward the second body so that the slot is closed by the opening / closing plate. 11 . The energy storage system according to claim 10 , wherein the fire extinguishing agent is configured to be transported from the fire extinguishing agent tank to the fire extinguishing pipe through the main pipe. 12 . The energy storage system according to claim 11 , wherein the fire extinguishing agent does not move to the second body due to the opening / closing plate.

13. The energy storage system according to claim 2, wherein the fire extinguishing pipe comprises a pipe member and a sealing member, wherein the tube member extends along one side of the battery cell, and The sealing member is located at a position corresponding to at least one vent of the battery cell.

14. The energy storage system according to claim 13, wherein the pipe member includes a fire extinguishing agent hole, and The fire extinguishing agent hole is at a position corresponding to the at least one vent of the battery cell, and the sealing member seals the fire extinguishing agent hole.

15. The energy storage system according to claim 14, wherein the sealing member has a groove at a position corresponding to the fire extinguishing agent hole, and The thickness of the sealing member at the groove is thinner than that of other regions of the sealing member.

16. An energy storage system comprising: A battery rack, comprising a frame and a plurality of battery modules accommodated in the frame; a main supervisor, in said battery rack; a fire extinguishing agent tank and a sensor selectively connected to the main pipe; a fire extinguishing pipe on at least one of the plurality of battery modules and connected to the main pipe; as well as a one-way valve coupled to the end of the fire extinguishing pipe, the one-way valve comprising a first body, a second body, and an opening / closing plate, the first body being connected to the end of the fire extinguishing pipe, the second body being opposite to the first body, and the opening / closing plate being arranged in a groove between the first body and the second body. The smoke generated in the battery rack or the fire extinguishing agent supplied from the fire extinguishing agent tank moves within the fire extinguishing pipe according to the movement of the opening / closing plate.

17. The energy storage system according to claim 16, wherein: When the smoke is at the end of the fire extinguishing pipe, the smoke is transmitted to the sensor through the fire extinguishing pipe and the main pipe, and When the sensor senses an event in the battery rack, the fire extinguishing agent in the fire extinguishing agent tank is transported to the fire extinguishing pipe through the main pipe.

18. The energy storage system according to claim 16, wherein: When smoke is admitted to the one-way valve from the outside of the second body, the opening / closing plate moves toward the first body so that the groove is exposed through the opening / closing plate, the smoke moves from the second body to the first body, and the smoke is transferred to the sensor through the fire extinguishing pipe and the main pipe.

19. The energy storage system according to claim 16, wherein: When the sensor senses an event, the opening / closing plate moves toward the second body so that the slot is closed by the opening / closing plate, and the fire extinguishing agent is not transferred to the second body due to the opening / closing plate.

20. The energy storage system according to claim 16, wherein the fire extinguishing pipe comprises a pipe member and a sealing member. wherein the pipe member has a fire extinguishing agent hole, wherein the sealing member is configured to be melted by an event, and The fire extinguishing agent hole is exposed due to the melting of the sealing member.

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