Battery module and energy storage system comprising same

Abstract

The present disclosure relates to a battery module and an energy storage system including the same, in which a fire extinguishing conduit is positioned to be spaced apart from a center of an exhaust member in a horizontal direction, thereby preventing the conduit from being lost by gas passing through the exhaust member due to an event. The present disclosure provides, as an example, a battery module and an energy storage system, the battery module comprising: a module case having an accommodation space therein and in which a plurality of battery cells are accommodated; the module pipe is located above the module shell, and the fire extinguishing agent can move through the module pipe; and a tube guide rail including a receiving portion in which the module tube is received and located on the module housing, in which each of the plurality of battery cells includes an exhaust member, the exhaust members of the plurality of battery cells are collinearly arranged in a longitudinal direction of the battery module, and the exhaust members of the plurality of battery cells are collinearly arranged in a longitudinal direction of the battery module. And the module tube and the accommodating portion are positioned so as not to overlap with a central region of the exhaust member in a horizontal direction crossing the longitudinal direction.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0095479, filed on July 20, 2023, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference. TECHNICAL FIELD

[0002] Embodiments of the disclosure relate to a battery module and an energy storage system including the same. BACKGROUND

[0003] An energy storage system is a system that stores excess power or power generated using renewable energy. By using the energy storage system, excess power is stored during a time of low power demand, and power is supplied during a time of high power demand, thereby smoothly controlling power supply.

[0004] A space or facility in which an energy storage system is installed and operated is generally equipped with a device for suppressing a battery fire caused by an electric shock, a short circuit, an external surge, etc., by force. A typical fire extinguishing system includes a fire detection sensor, a sprinkler, or a fire extinguishing agent sprayer installed around a battery rack or a ceiling.

[0005] Such a fire extinguishing system uses an indirect spraying method of spraying water or a fire extinguishing agent near a battery or near the entire area where a battery is installed in a battery fire event. However, as the energy density of a battery continues to increase, the amount of flame in the exhaust member of a battery cell and the spraying pressure increase, which makes it difficult to extinguish or suppress a fire with general fire extinguishing equipment. Therefore, there is an increasing demand for a fire extinguishing system that effectively suppresses a fire of a plurality of batteries in an energy storage system and is capable of early suppression of a high-pressure fire.

[0006] The above information disclosed in this Background section is only for enhancing the understanding of the background of the disclosure, and therefore it can contain information that does not constitute prior art. SUMMARY

[0007] The present disclosure relates to various embodiments of a battery module and an energy storage system including the same, in which a fire extinguishing conduit is spaced apart from the center of an exhaust member of a secondary battery in a horizontal direction, thereby preventing the conduit from being lost due to gas discharged through the exhaust member in an event.

[0008] A battery module and an energy storage system including the same according to an embodiment of the disclosure include a module case having an accommodation space accommodating battery cells, a module tube located above the module case and configured to transport a fire extinguishing agent, and a tube guide rail including an accommodation portion accommodating the module tube and located on the module case. Each of the battery cells includes an exhaust member. The exhaust members of the battery cells are arranged collinearly in a longitudinal direction of the battery module, and the module tube and the accommodation portion do not overlap a central region of the exhaust members in a horizontal direction crossing the longitudinal direction.

[0009] The module tube can include a conduit nozzle in a region corresponding to the exhaust member of each of the battery cells.

[0010] The conduit nozzle can be a hole passing through the module tube and can be covered by a cover portion.

[0011] The cover portion can include polypropylene or polycarbonate.

[0012] The conduit nozzle can be located between a line connecting a center of the module tube and a horizontal center of each of the exhaust members and a line extending downward from the center of the module tube.

[0013] The module tube can be a cylindrical tube and can be spaced apart from the horizontal center of each of the exhaust members by approximately 0.5 times to approximately 0.7 times a circumference of the module tube.

[0014] A central region of each of the exhaust members can be a region extending approximately 2 mm to approximately 6 mm in opposite directions from a center of the exhaust member.

[0015] A through hole can be located on a lower side of the accommodation portion in a longitudinal direction with intervals.

[0016] The through hole can be above a portion corresponding to the exhaust member of each of the battery cells.

[0017] A plurality of fixing portions can be on an upper side of the accommodation portion. The fixing portion can be a hook for fixing the module tube.

[0018] The module tube can include two plates attached by brazing, and the module tube can have an accommodation space configured to transport the fire extinguishing agent.

[0019] The module tube can have two accommodation spaces extending in the longitudinal direction.

[0020] The accommodation space of the module tube can not overlap a center of each of the exhaust members in the horizontal direction.

[0021] The energy storage system according to another embodiment of this disclosure includes the battery module described above.

[0022] A battery module according to another embodiment of this disclosure includes: a main body of a module housing having a receiving space therein where a plurality of battery cells are housed and an open upper portion; a module tube located above the module housing and configured to deliver a fire extinguishing agent; and a cover having a receiving portion therein where the module tube is housed and coupled to the open upper portion of the main body of the module housing. Each of the battery cells includes an vent. The vents of the battery cells are arranged collinearly in the longitudinal direction of the battery module, and the module tube and the receiving portion do not overlap with the central region of the vent in a horizontal direction intersecting the longitudinal direction.

[0023] An energy storage system may include: a frame in which a plurality of battery modules identical to the battery modules are housed; a branch pipe configured to connect to and be fixed to the rear surface of the frame of each of the plurality of battery modules; and a main pipe configured to connect to the branch pipe and deliver extinguishing agent stored in a extinguishing agent unit to the branch pipe.

[0024] The portion of the tubular guide rail opposite to the receiving portion can be installed inside the frame. Attached Figure Description

[0025] This patent or application document contains at least one color-drawn graphic. Upon request and payment of the necessary fees, the Patent Office will provide a copy of this patent or patent application publication with the color-drawn graphic.

[0026] Figure 1 This is a conceptual diagram illustrating an energy storage system according to an embodiment of the present disclosure.

[0027] Figure 2A and Figure 2B These are the front perspective view and the magnified perspective view, respectively, as shown in the example. Figure 1 The connection status of the fire extinguishing agent pipe and the battery rack in the energy storage system.

[0028] Figures 3A to 3C They are connected to Figure 1 Perspective view, exploded perspective view, and cross-sectional view of the guide rail of the fire extinguishing agent pipe on the battery module in the energy storage system.

[0029] Figure 4 This is an example Figure 3C A magnified view of part "4".

[0030] Figure 5 It is along Figure 3A An enlarged partial cross-sectional view of an embodiment, taken from line “5-5”.

[0031] Figure 6 is an enlarged partial cross-sectional view of another embodiment taken along the line “5-5” of Figure 3A

[0032] Figure 7 is an enlarged partial cross-sectional view of another embodiment taken along the line “5-5” of Figure 3A

[0033] Figure 8 is a cross-sectional view of another embodiment in which the fire extinguishing agent pipe is installed in a cover of a battery module in the energy storage system of Figure 1 DETAILED DESCRIPTION

[0034] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0035] Embodiments of the present disclosure are provided to more fully describe the present disclosure to those skilled in the art. The following embodiments can be modified in various different forms, and the scope of the present disclosure is not limited to the following embodiments. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the concept of the present disclosure to those skilled in the art.

[0036] Further, in order to facilitate description and clarity, the thickness and size of each layer are exaggerated in the drawings, and the same reference numerals in the drawings always indicate the same elements. As used in this specification, the term “and / or” includes any and all combinations of one or more of the associated terms. In addition, in this specification, it will be understood that when an element A is referred to as being “connected to” an element B, the element A can be directly connected to the element B, or there can be an intervening element C between the element A and the element B, such that the element A can be indirectly connected to the element B.

[0037] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the singular forms “a,” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, the use of the terms “including,” “containing,” “comprising,” “having,” “in involving,” “portions,” “elements” and / or “components,” are not meant to be interpreted in an excluding or exhaustive sense. Moreover, the term “or” is used in the inclusive sense (and not the exclusive sense) so that when used, for example, in a list of two or more items, the term “or” means one, some, or all of the associated listed items.

[0038] ​​​It will be understood that, although the terms “first,” “second,” etc. can be 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 only 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 described below could also be termed a second element, component, region, layer or section without departing from the teachings of the present disclosure.

[0039] To facilitate understanding of one element or feature illustrated in the drawings, spatially relative terms such as “under,” “below,” “lower,” “over,” “upper” and the like can be used herein. These spatially relative terms are intended to encompass different orientations of the various processes states or use states of the present disclosure, and therefore, the present disclosure is not limited to the orientations described herein. For example, when an element or feature illustrated in the drawings is turned over, an element or feature described as “under” or “below” is changed to “over” or “above.” Thus, the term “below” can include the terms “above” and “below.”

[0040] Figure 1 is a conceptual diagram illustrating an energy storage system according to an embodiment of the present disclosure. Referring to Figure 1 , the energy storage system 10 can include a fire extinguishing agent unit 100 in which a fire extinguishing agent is accommodated, a fire extinguishing agent pipe 200 connected to the fire extinguishing agent unit 100 to supply the fire extinguishing agent, and at least one battery rack 300 connected to the fire extinguishing agent pipe 200.

[0041] In one or more embodiments, the fire extinguishing agent unit 100 can include an agent container in which a fire extinguishing agent is accommodated, and the fire extinguishing agent can be supplied to the fire extinguishing agent pipe 200 in response to the agent container being opened by a separate valve. The agent container can be fixed at a mounting position as a package type or a wall-fixed type. In one or more embodiments, the agent container can be a pressure container for storing a high-pressure fire extinguishing agent. The internal pressure of the agent container can vary depending on the country in which the fire extinguishing system is applied (and the corresponding national standards) and / or the type of fire extinguishing agent.

[0042] In one or more embodiments, the fire extinguishing agent stored in the agent container can include any gas-based fire extinguishing agent such as trifluoromethane (HFC-23, CHF3), pentafluoroethane (HFC-125, C2HF5), and heptafluoropropane (HFC227ea, CF3CHFCF3), or a commonly used fire extinguishing agent such as dodecafluoro-2-methylpentane-3-one (CF3CF2C(O)CF(CF3)2) and water. The fire extinguishing agent can be stored in the agent container in a gas or pressurized manner.

[0043] The fire extinguishing agent pipe 200 can extend from the fire extinguishing agent unit 100 to one or more locations between the battery modules 310 in the battery rack 300. To this end, the fire extinguishing agent pipe 200 can include a main pipe 210 connected to the fire extinguishing agent unit 100, branch pipes 220 branched from the main pipe 210, and a plurality of module pipes 230 extending from the branch pipes 220 to locations between each of the battery modules 310 in the battery rack 300.

[0044] In one or more embodiments, the main pipe 210 can connect the branch pipes 220. One end of the main pipe 210 can be connected to the fire extinguishing agent unit 100, and the main pipe 210 can extend from the fire extinguishing agent unit 100 and pass by or near one side of each of all the battery racks 300 in the energy storage system 10. In response to the valve of the fire extinguishing agent unit 100 being opened, the fire extinguishing agent can be delivered to the vicinity of the battery rack 300 to which the fire extinguishing agent is to be supplied.

[0045] The branch pipes 220 can be branched from the main pipe 210, and in one or more embodiments, can extend in a direction in which the battery modules 310 are stacked in the battery rack 300 (e.g., downward). The branch pipes 220 can provide a path for delivering the fire extinguishing agent that has moved along the main pipe 210 to the vicinity of the battery rack 300 to the battery modules 310 in the battery rack 300.

[0046] In one or more embodiments, each of the module pipes 230 can extend from the branch pipes 220 to a location above one of the battery modules 310. Each of the module pipes 230 can extend to be disposed above the exhaust member of the battery cells included in the battery module 310. The location of the module pipes 230 will be described in detail below. The module pipes 230 can supply or carry the fire extinguishing agent received from the branch pipes 220 in response to a fire or heat occurring in one or more secondary batteries in one or more of the battery modules 310.

[0047] The energy storage system 10 can include a plurality of battery racks 300. Also, each of the battery racks 300 can include a plurality of battery modules 310. In each of the battery racks 300, the battery modules 310 can be stacked in a row and / or column direction. Also, the plurality of battery modules 310 included in the battery rack 300 can be connected in series, in parallel, or in series-parallel to output a desired power.

[0048] Figure 2A is an enlarged rear perspective view of part "2b" of Figure 1 a fire extinguishing agent pipe 200 in an energy storage system and a coupling state with a rack frame for a battery. Figure 2B is Figure 2A an enlarged rear perspective view of part "2b" of

[0049] in Figures 2A to 2BIn particular, the module tube 230 and the branch tube 220 of the fire extinguishing agent tube 200 installed in the rack frame 320 for the battery are shown. Also, Figures 3A to 3C are respectively a perspective view, an exploded perspective view, and a cross-sectional view of a guide rail of the fire extinguishing agent tube coupled to a battery module in an energy storage system. Figure 1 In the following, the relationship between the fire extinguishing agent tube 200 and the battery module 310 will be described in more detail with reference to Figure 2A and Figure 2B and Figures 3A to 3C

[0050] The battery rack 300 can include a rack frame 320, and a plurality of battery modules 310 can be accommodated in the rack frame 320 and electrically connected to each other. In the battery rack 300, the plurality of battery modules 310 can be stacked in a vertical direction (y-axis direction), and each of the two rows is spaced apart in a horizontal direction (x-axis direction). Although the battery rack 300 is shown as having two rows of battery modules 310 in the horizontal direction (x-axis direction) in the rack frame 320, in one or more embodiments, the battery modules 310 can be stacked in a single row in the vertical direction (y-axis direction), and the present disclosure is not limited thereto.

[0051] The battery module 310 can be slidably coupled into the rack frame 320 in a longitudinal direction (z-axis direction) of the battery module 310.

[0052] The battery module 310 can include a module case 311 and a plurality of battery cells 312.

[0053] In one or more embodiments, an accommodation space can be provided in the module case 311, and the plurality of battery cells 312 can be accommodated in the accommodation space. In one or more embodiments, the module case 311 can include a tray having an open upper portion and a cover sealing the upper portion of the tray.

[0054] In one or more embodiments, the battery cells 312 can be arranged in two rows (as shown in Figure 3B ) or any other suitable configuration. Also, the battery cells 312 can be electrically connected to each other and can also be connected in various connection manners such as series, parallel, and / or series-parallel. An upper portion of each battery cell 312 can include a positive terminal, a negative terminal, and a gas exhaust 312a. In one or more embodiments, the gas exhaust 312a can be located approximately at a central portion of an upper surface of the battery cell 312. Also, the gas exhausts 312a of the plurality of battery cells 312 can be arranged collinearly in the longitudinal direction (z-axis direction) (i.e., the gas exhausts 312a can be arranged in one or more lines in the z-axis direction).

[0055] ​The module housing 311 may further include a plurality of vent holes in the region corresponding to the vent 312a of the battery cell 312. Each of the vent holes may be configured as a venting path for venting gas through one of the vents 312a of the battery cell 312, and may also be a path for supplying extinguishing agent discharged through the extinguishing agent pipe 200.

[0056] Multiple tube rails 330, on which the module tube 230 is mounted, can be connected in the frame 320. The tube rails 330 and the battery module 310 can be accommodated in the frame 320 and can be stacked alternately in the vertical direction (y-axis direction). The tube rails 330 can be spaced apart from the upper part of the battery module 310 by a certain distance (e.g., spaced by a gap).

[0057] Each tube guide rail 330 may have a flat plate shape and be connected to the frame 320. For example, a connecting portion 332, mounted inside the frame 320, may be provided on one side, and a receiving portion 331, in which the module tube 230 is housed, may be provided on the opposite side. The connecting portion 332 and the receiving portion 331 of the tube guide rail 330 may extend in the longitudinal direction (z-axis direction) of the battery module 310. The cross-sectional shape of the receiving portion 331 may correspond to (e.g., match or substantially match) the external shape of the module tube 230. The receiving portion 331 may have an approximately U-shaped cross-section, and the outer side of the module tube 230 may contact (e.g., directly contact) the inner side of the receiving portion 331.

[0058] The module tube 230 can be slidably connected to the receiving portion 331 of the tube guide 330 in the longitudinal direction (z-axis direction). The module tube 230 can be in the form of a tube. Figure 4 yes Figure 3C A magnified view of part "4". For example... Figure 4 As shown, a fixing portion 331a for securing the module tube 230 may be provided on the upper side of the receiving portion 331 of the tube guide 330. In one or more embodiments, the fixing portion 331a may be or include a hook configured to secure the module tube 230 received in the receiving portion 331, for example, to prevent the module tube 230 received in the receiving portion 331 from accidentally falling off the receiving portion 331. The fixing portion 331a may extend horizontally (x-axis direction) along the upper side of the receiving portion 331. A plurality of fixing portions 331a may be provided in the receiving portion 331 and spaced apart from each other in the horizontal (x-axis) direction.

[0059] The plurality of module tubes 230 can be connected by the branch pipe 220 on the rear surface of the shelf frame 320. In one or more embodiments, the branch pipe 220 can connect the plurality of module tubes 230 in the same row. The branch pipe 220 can be fixed on the rear surface of the shelf frame 320 by the branch pipe fixing part 340. In one or more embodiments, the branch pipe fixing part 340 can be a bracket, but the present disclosure is not limited thereto.

[0060] A plurality of through-holes can be located at the lower side of the accommodation part 331 at intervals in the longitudinal direction (z-axis direction). The through-holes can be located above portions corresponding to the exhaust members 312a of each of the battery cells 312 in the battery module 310. Figure 5 is a cross-sectional view taken along the line "5-5". Figure 3A

[0061] The module tube 230 can include a plurality of conduit nozzles 232 located at the lower side of the module tube 230. The conduit nozzles 232 can be arranged or oriented in a direction approximately perpendicular to the outer surface of the exhaust member 312a. In one or more embodiments, the conduit nozzles 232 can be holes passing through the module tube 230. The conduit nozzles 232 can be located at positions corresponding to the exhaust member 312a of each of the plurality of battery cells 312. The area in which the conduit nozzles 232 are located in the module tube 230 can be covered by the cover part 231. Since the conduit nozzles 232 of the module tube 230 are not generally exposed to the outside, the fire extinguishing agent inside the module tube 230 can be arranged only inside the conduit.

[0062] However, when an event occurs in a particular battery cell 312 and gas is ejected through the exhaust member 312a, the cover part 231 covering the conduit nozzles 232 above the exhaust member 312a can melt, and thus the fire extinguishing agent can be sprayed onto the battery cell 312 in which the event occurred through the conduit nozzles 232. In one or more embodiments, the gas discharged through the exhaust member 312a can melt the cover part 231 outside the conduit nozzles 232 through the discharge hole of the module housing 311 and the corresponding through-hole of the accommodation part 331. In one or more embodiments, the lower surface of the accommodation part 331 can be spaced apart from the upper side of the module housing 311 of the battery module 310 by a distance in the range of about (approximately) 4 mm to about (approximately) 6 mm.

[0063] ​In one or more embodiments, the cover portion 231 can be made of a thermoplastic resin such as polypropylene (PP) having a melting point of approximately 160℃ or polycarbonate (PC) having a melting point of approximately 230℃. Although it has been described that the cover portion 231 is configured to melt due to the heat of the discharged gas, in one or more embodiments, the cover portion 231 can be broken or fractured into various forms due to the heat of the discharged gas, thereby exposing the conduit nozzles 232 of the module tube 230. In one or more embodiments, the temperature of the gas and heat discharged through the exhaust 312a can be in the range of about (approximately) 800℃ to about (approximately) 1200℃, and the cover portion 231 can be configured to melt at a temperature of about (approximately) 200℃.

[0064] In one or more embodiments, as shown in FIG. 13, Figure 6 Each of the conduit nozzles 232a can face the center of the exhaust 312a of one of the battery cells 312. The conduit nozzles 232a can be disposed adjacent to the exhaust 312a in a lower region of the module tube 230a. In one or more embodiments, the conduit nozzles 232a can be disposed between a line connecting the center of the module tube 230a and the center of the exhaust 312a and a line extending downward from the center of the module tube 230a. In embodiments in which the conduit nozzles 232a are oriented to face the center of the exhaust 312a, the fire extinguishing agent can be more easily injected into the exhaust 312a.

[0065] In one or more embodiments, the module tube 230a and the accommodation portion 331 of the tube rail 330 can be spaced apart from the center of the exhaust 312a in the horizontal direction (x-axis direction). In one or more embodiments, the module tube 230a and the accommodation portion 331 of the tube rail 330 can be configured not to overlap the center region of the exhaust 312a of the plurality of battery cells 312 in a plan view (i.e., a top view). The center region of the exhaust 312a can be a region extending approximately 2mm to approximately 6mm from the center of the exhaust 312a of each of the plurality of battery cells 312 to each of the two sides. In the center region of the exhaust 312a, the module tube 230a can melt due to the high-temperature and / or high-pressure gas in response to an event occurring in the battery cell 312, thereby causing a fire and loss of the module tube 230a. However, in one or more embodiments, because the module tube 230a and the accommodation portion 331 of the tube rail 330 are configured not to overlap the center region of the exhaust 312a in the horizontal direction (x-axis direction), only the cover portion 231 can melt due to the high-temperature and / or high-pressure gas discharged through the exhaust 312a, and the module tube 230a can be prevented from melting and being lost.

[0066] In one or more embodiments, the module tube 230a can be a cylindrical tube. In one or more embodiments, the center of the module tube 230a can be spaced apart from the center (e.g., horizontal center) of the exhaust member 312a in the horizontal direction (x-axis direction) by approximately 0.5 times to approximately 0.7 times the circumference of the module tube 230a. In one or more embodiments in which the total circumference of the module tube 230a is approximately 26 mm and the width of the exhaust member 312a in the horizontal direction (x-axis direction) is approximately 34 mm, the center of the module tube 230a can be spaced apart from the center of the exhaust member 312a by a distance in the range from approximately 13 mm to approximately 18.2 mm to prevent loss of the module tube 230a and facilitate melting of the cover portion 231 so that the fire extinguishing agent can be sprayed through the conduit nozzle 232a.

[0067] According to experiments after an event according to the module tube 230a of one embodiment, the center of the module tube 230a was spaced apart from the center of the exhaust member 312a by approximately 13 mm, the total circumference of the module tube 230a was approximately 26 mm, and the width of the exhaust member 312a in the horizontal direction (x-axis direction) was approximately 34 mm.

[0068] According to experiments after an event according to the module tube 230a of the comparative example, the center of the module tube 230a was disposed above the center region of the exhaust member 312a, and when the module tube 230a was lost, the fire extinguishing agent should be supplied through the exhaust member 312a of the battery cell 312 in which the event occurred, but since the fire extinguishing agent was sprayed to a region other than the exhaust member 312a, it was difficult to suppress the fire of the battery cell 312 in which the event occurred.

[0069] As described in the experimental results above, in the case of the comparative example, it can be seen that the module tube 230a is melted and lost due to the high-temperature or high-pressure gas discharged through the exhaust member 312a. On the other hand, in the embodiment of the present application, it can be seen that in the module tube 230a, melting of a region other than the conduit nozzle 232a can be prevented.

[0070] As Figure 7As shown in FIG. 10, the module tube 230b formed by attaching two plates via brazing can be used as the module tube 230. In one or more embodiments, the module tube 230b can have an internal accommodation space in which the fire extinguishing agent can move or be transported. Also, the accommodation space can include two accommodation spaces extending in the longitudinal direction (z-axis direction) of the battery module 310. Also, the module tube 230b can be provided such that the accommodation space does not overlap the center of the exhaust member 312a in the horizontal direction (x-axis direction). In one or more embodiments, the module tube 230b has the accommodation space on both sides of the center of the exhaust member 312a in the width direction, and the area coupled by welding can be located in the center portion of the module tube 230b. The module tube 230b can include the conduit nozzle 232b located in the lower side, and the conduit nozzle 232b can be covered by the cover portion 231b. The two accommodation spaces of the module tube 230b can supply the fire extinguishing agent in response to an event occurring in the battery cell 312, thereby enabling faster fire extinguishing.

[0071] In one or more embodiments, as Figure 8 As shown in FIG. 11, the module tube 230c can be accommodated in the cover 311b of the module case 311 of the battery module 310. In one or more embodiments, the battery cell 312 can be accommodated in the module case 311, and the module case 311 can include a case body 311a having an accommodation space in which the battery cell 312 is accommodated and an open upper portion, and a cover 311b coupled to the open upper portion of the case body 311a. Also, the module tube 230c can be accommodated inside the cover 311b. The cover 311b can include an accommodation portion 331 for accommodating the module tube 230c, and the module tube 230c can be accommodated in the accommodation portion 331. In an embodiment in which the module tube 230c is accommodated inside the cover 311b of the module case 311, a separate tube guide 330 can not be provided. The cover 311b can function as the tube guide 330.

[0072] Also, the accommodation portion 331 provided in the cover 311b can also be configured not to overlap the center of the exhaust member 312a in the horizontal direction (x-axis direction).

[0073] In a battery module and an energy storage system including the same according to one embodiment of the disclosure, a fire extinguishing conduit is spaced apart from the center of an exhaust member in a horizontal direction, thereby preventing the conduit from being lost due to heat of gas exhausted through the exhaust member due to an event.

[0074] The above-described embodiments are merely for implementing a battery module and an energy storage system including the same according to the present disclosure, and the present disclosure is not limited to the above-described embodiments. The technical spirit of the present disclosure also includes the scope of various modifications that can be made by any person of ordinary skill in the art to which the present disclosure pertains without departing from the main subject matter as claimed by the claims.

Claims

1. A battery module, characterized by, include: Module housing, including the receiving space; Multiple battery cells are housed in the housing space; A module tube, located above the module housing and configured to deliver extinguishing agent; as well as The tube guide rail includes a receiving portion for accommodating the module tube, the tube guide rail being mounted on the module housing. The plurality of battery cells include a plurality of venting components. The plurality of exhaust components are arranged collinearly in the longitudinal direction of the battery module, and The module tube and the receiving portion do not overlap with the central region of the plurality of exhaust components in the horizontal direction intersecting the longitudinal direction.

2. The battery module of claim 1, wherein, The module tube includes a plurality of conduit nozzles, each of the plurality of conduit nozzles being located in a region corresponding to an exhaust port of each of the plurality of battery cells.

3. The battery module of claim 2, wherein, The battery module further includes a cover portion, wherein each conduit nozzle is a hole passing through the module tube and is covered by the cover portion.

4. The battery module of claim 3, wherein, The cover portion comprises polypropylene or polycarbonate.

5. The battery module of claim 2, wherein, Each duct nozzle lies between a line connecting the center of the module tube and the horizontal center of one of the plurality of exhaust components and a line extending downward from the center of the module tube.

6. The battery module of claim 1, wherein, The module tube is a cylindrical tube, and the cylindrical tube is spaced 0.5 to 0.7 times the circumference of the module tube from the horizontal center of each of the plurality of exhaust components.

7. The battery module of claim 1, wherein, The central region of each of the plurality of exhaust components is a region extending 2 mm to 6 mm from the center of each exhaust component in the opposite direction.

8. The battery module of claim 1, wherein, The battery module further includes a plurality of through holes spaced apart on the lower side of the receiving portion in the longitudinal direction.

9. The battery module of claim 8, wherein, Each of the plurality of through holes is located above the portion corresponding to the venting component of each of the plurality of battery cells.

10. The battery module of claim 1, wherein, The battery module further includes a plurality of fixing portions on the upper side of the receiving portion, the plurality of fixing portions including hooks configured to fix the module tube.

11. The battery module of claim 1, wherein, The module tube comprises two plates brazed together, and wherein the module tube includes a containment space configured to deliver the extinguishing agent.

12. The battery module of claim 11, wherein, The module tube includes two receiving spaces extending in the longitudinal direction.

13. The battery module of claim 12, wherein, Each of the two receiving spaces of the module tube does not overlap with the center of each of the plurality of exhaust elements in the horizontal direction.

14. An energy storage system characterized by, Includes the battery module as described in any one of claims 1-4.

15. The energy storage system of claim 14, wherein, The energy storage system further includes: A frame in which multiple battery modules identical to the battery modules are housed; A branch pipe, configured to connect to and fixed to the module tube of each of the plurality of battery modules on the rear surface of the frame; and The main pipe is configured to connect to the branch pipe and deliver the extinguishing agent stored in the extinguishing agent unit to the branch pipe.

16. The energy storage system of claim 15, wherein, The portion of the tubular guide rail opposite to the receiving portion is installed inside the frame.

17. A battery module, comprising: include: The main body of the module housing includes a receiving space and an open upper part; Multiple battery cells are housed in the housing space; A module tube, located above the module housing and configured to deliver extinguishing agent; as well as a cover including an accommodation portion that accommodates the module tube, the cover being coupled to the open upper portion of the main body of the module case, wherein the plurality of battery cells includes a plurality of exhaust pieces, wherein the plurality of exhaust pieces of the plurality of battery cells are arranged collinearly in a longitudinal direction of the battery module, and wherein the module tube and the accommodation portion do not overlap with a central region of the plurality of exhaust pieces in a horizontal direction that intersects the longitudinal direction.

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