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 in the Korean Intellectual Property Office on July 20, 2023, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] Embodiments of the present disclosure relate to a battery module and an energy storage system including the battery module. Background Art

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

[0004] The space or facility where the energy storage system is installed and operated is usually mandatorily equipped with equipment for suppressing battery fires caused by electric shock, short circuit, external surge, etc. Typical fire extinguishing systems include fire detection sensors, sprinklers or fire extinguishing agent sprayers installed around or on the roof of the battery rack.

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

[0006] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute the prior art. Summary of the invention

[0007] The present disclosure relates to various embodiments of a battery module and an energy storage system including the battery module, wherein a fire extinguishing duct is horizontally spaced apart from the center of a vent of a secondary battery to prevent the duct from being lost due to gas discharged through the vent in an event.

[0008] A battery module and an energy storage system including the battery module according to an embodiment of the present disclosure include: a module housing having a receiving space for receiving a battery cell; a module tube located above the module housing and configured to transport a fire extinguishing agent; and a tube guide rail including a receiving portion for receiving the module tube and located on the module housing. Each of the battery cells includes an exhaust member. The exhaust members of the battery cells are arranged in a collinear manner in the longitudinal direction of the battery module, and the module tube and the receiving portion do not overlap with a central area of ​​the exhaust member in a horizontal direction intersecting the longitudinal direction.

[0009] The module tube may include a duct nozzle in a region corresponding to the exhaust gas of each of the battery cells.

[0010] The conduit nozzle may be a hole through the module tube and may be partially covered by a cover.

[0011] The cover portion may comprise polypropylene or polycarbonate.

[0012] The duct nozzle may 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 may be a cylindrical tube, and may be spaced apart from a 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] The central region of each of the vents may be a region extending approximately 2 mm to approximately 6 mm in opposite directions from the center of the vent.

[0015] The through holes may be located at a lower side of the accommodation portion at intervals in the longitudinal direction.

[0016] The through hole may be above a portion corresponding to a vent of each of the battery cells.

[0017] A plurality of fixing portions may be on an upper side of the receiving portion. The fixing portion may be a hook for fixing the module pipe.

[0018] The modular tube may include two plates attached by brazing, and the modular tube may have a receiving space configured to carry the fire extinguishing agent.

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

[0020] The accommodation space of the module pipe may not overlap with the center of each of the exhaust members in the horizontal direction.

[0021] An energy storage device according to another embodiment of the present disclosure includes the above-mentioned battery module.

[0022] A battery module according to another embodiment of the present disclosure includes: a main body of a module housing having a receiving space in which a plurality of battery cells are received and an open upper portion; a module tube located above the module housing and configured to transport a fire extinguishing agent; and a cover having a receiving portion in which the module tube is received and coupled to the open upper portion of the main body of the module housing. Each of the battery cells includes an exhaust member. The exhaust members of the battery cells are collinearly arranged in a longitudinal direction of the battery module, and the module tube and the receiving portion do not overlap with a central area of ​​the exhaust member 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 module are accommodated; a branch pipe configured to connect the module pipe of each of the plurality of battery modules on a rear surface of the frame and to be fixed on the rear surface of the frame; and a main pipe configured to connect the branch pipes and to transport a fire extinguishing agent stored in a fire extinguishing agent unit to the branch pipes.

[0024] A portion of the pipe guide opposite to the receiving portion may be installed inside the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] This patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

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

[0027] Figure 2A and Figure 2B They are front view perspective and enlarged rear view perspective, for example Figure 1 The connection status of the fire extinguishing agent pipe and the battery rack in the energy storage system.

[0028] FIG. 3A to FIG. 3C Connect to Figure 1 A perspective view, an exploded perspective view and a cross-sectional view of a guide rail of a fire extinguishing agent pipe on a battery module in an energy storage system.

[0029] Figure 4 is an example Figure 3C An enlarged view of portion “4”.

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

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

[0032] Fig. 7A and Figure 7B Experimental results according to the embodiment and the comparative example of the module tube after an event occurred in a battery cell are respectively illustrated.

[0033] Figure 8 It is along Figure 3A An enlarged partial cross-sectional view of another embodiment taken along line “5-5”.

[0034] Fig. 9 is a cross-sectional view of another embodiment, in which the fire extinguishing agent pipe is installed Figure 1 In the cover of the battery module in the energy storage system. DETAILED DESCRIPTION

[0035] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0036] The embodiments of the present disclosure are provided to more fully describe the present disclosure to those skilled in the art. The following embodiments may be modified in a variety of different forms, and the scope of the present disclosure is not limited to the following embodiments. On the contrary, these embodiments are provided so that the present disclosure will be thorough and complete, and the concepts of the present disclosure will be fully conveyed to those skilled in the art.

[0037] In addition, for ease of 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 listed associated items. In addition, in this specification, it will be understood that when element A is referred to as being "connected to" element B, element A may be directly connected to element B, or there may be an intervening element C between element A and element B so that element A may be indirectly connected to element B.

[0038] The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, the terms "include" and / or "comprise" used in this specification should be interpreted as specifying the existence of the shape, quantity, step, operation, member, element and / or its combination, and do not exclude the existence or addition of other shapes, quantities, steps, operations, members, elements and / or its combination.

[0039] It will be understood that although the terms "first", "second", etc. may be used herein to describe various components, parts, regions, layers and / or portions, these components, parts, regions, layers and / or portions should not be limited by these terms. These terms are only used to distinguish one component, component, region, layer or portion from another component, component, region, layer or portion. Therefore, without departing from the teachings of the present disclosure, a first component, component, region, layer or portion described below may also refer to a second component, component, region, layer or portion.

[0040] In order to facilitate understanding of an element or feature illustrated in the drawings and other elements or features, spatial relative terms such as "under", "below", "down", "above", "upper", etc. may be used herein. These spatial relative terms are intended to facilitate understanding of the present disclosure according to various process states or use states of the present disclosure, and therefore, the present disclosure is not limited thereto. For example, when an element or feature in the drawings is flipped, an element or feature described as "under" or "below" is changed to "above" or "upper". Therefore, the term "below" may include the terms "above" and "below".

[0041] Figure 1 is a conceptual diagram illustrating an energy storage system according to an embodiment of the present disclosure. Figure 1 The energy storage system 10 may include a fire extinguishing agent unit 100 containing a fire extinguishing agent, 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 .

[0042] In one or more embodiments, the fire extinguishing agent unit 100 may include an agent container in which the fire extinguishing agent is contained, and in response to the agent container opening by a separate valve, the fire extinguishing agent may be supplied to the fire extinguishing agent pipe 200. The agent container may be fixed in the installation position as an encapsulated type or a wall-fixed type. In one or more embodiments, the agent container may be a pressure container for storing high-pressure fire extinguishing agents. The internal pressure of the agent container may vary according to the country (and corresponding national standards) and / or the type of fire extinguishing agent in which the fire extinguishing system is applied.

[0043] In one or more embodiments, the fire extinguishing agent stored in the agent container may include any gas-based fire extinguishing agent such as trifluoromethane (HFC-23, CHF3), pentafluoroethane (HFC-125, C2HF5) and heptafluoropropane (HFC227ea, CF3CHFCF3), or a common fire extinguishing agent such as dodecafluoro-2-methylpentane-3-one (CF3CF2C(O)CF(CF3)2) and water. The fire extinguishing agent may be stored in the agent container in a pneumatic or pressurized manner.

[0044] The fire extinguishing agent pipe 200 may 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 may include a main pipe 210 connected to the fire extinguishing agent unit 100, a branch pipe 220 branched from the main pipe 210, and a plurality of module pipes 230 extending from the branch pipe 220 to locations between each battery module 310 in the battery rack 300.

[0045] In one or more embodiments, the main pipe 210 may be connected to the branch pipe 220. One end of the main pipe 210 may be connected to the fire extinguishing agent unit 100, and the main pipe 210 may extend from the fire extinguishing agent unit 100 and pass through one side or the vicinity of each of all 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 may be delivered to the vicinity of the battery rack 300 to which the fire extinguishing agent is to be supplied.

[0046] The branch pipe 220 may branch from the main pipe 210, and in one or more embodiments, may extend in a direction (e.g., downward) in which the battery modules 310 are stacked in the battery rack 300. The branch pipe 220 may 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.

[0047] In one or more embodiments, each of the module pipes 230 may extend from the branch pipe 220 to a position above one of the battery modules 310. Each of the module pipes 230 may extend to be arranged above the exhaust member of the battery cell included in the battery module 310. The position of the module pipe 230 will be described in detail below. The module pipe 230 may supply or transport the fire extinguishing agent received from the branch pipe 220 in response to the occurrence of fire or heat in one or more secondary batteries in one or more battery modules 310.

[0048] The energy storage system 10 may include a plurality of battery racks 300. In addition, each battery rack 300 may include a plurality of battery modules 310. In each battery rack 300, the battery modules 310 may be stacked in rows and / or columns. In addition, the plurality of battery modules 310 included in the battery rack 300 may be connected in series, in parallel, or in series and parallel to output the desired power.

[0049] Figure 2A is an example Figure 1 A front perspective view of a connection state between a fire extinguishing agent pipe 200 in an energy storage system and a frame for a battery. Figure 2B yes Figure 2A An enlarged rear perspective view of portion “2b”.

[0050] exist FIG. 2A to FIG. 2B, the module pipe 230 and the branch pipe 220 of the fire extinguishing agent pipe 200 installed in the frame 320 for the battery are shown. In addition, FIG. 3A to FIG. 3C Connect to Figure 1 A perspective view, an exploded perspective view and a cross-sectional view of a guide rail of a fire extinguishing agent pipe on a battery module in an energy storage system of FIG. Figure 2A and Figure 2B as well as FIG. 3A to FIG. 3C The relationship between the fire extinguisher pipe 200 and the battery module 310 is described in more detail.

[0051] The battery rack 300 may include a frame 320, and a plurality of battery modules 310 may be accommodated in the frame 320 and electrically connected to each other. In the battery rack 300, a plurality of battery modules 310 may be stacked in a vertical direction (y-axis direction), with each of the two columns 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 a horizontal direction (x-axis direction) in the frame 320, in one or more embodiments, the battery modules 310 may be stacked in a single row in a vertical direction (y-axis direction), and the present disclosure is not limited thereto.

[0052] The battery module 310 may be slidably coupled to the frame 320 in a longitudinal direction (z-axis direction) of the battery module 310 .

[0053] The battery module 310 may include a module case 311 and a plurality of battery cells 312 .

[0054] In one or more embodiments, a receiving space may be provided in the module case 311, and a plurality of battery cells 312 may be received in the receiving space. In one or more embodiments, the module case 311 may include a tray having an open upper portion and a cover sealing the upper portion of the tray.

[0055] In one or more embodiments, the battery cells 312 may be arranged in two rows (eg, Figure 3B ) or any other suitable configuration. In addition, the battery cells 312 can be electrically connected to each other, and can also be connected in various connection modes such as series, parallel and / or series-parallel. The upper portion of each battery cell 312 may include a positive terminal, a negative terminal and an exhaust member 312a. In one or more embodiments, the exhaust member 312a may be located approximately at the center portion of the upper surface of the battery cell 312. In addition, the exhaust members 312a of multiple battery cells 312 can be arranged in a collinear manner in the longitudinal direction (z-axis direction) (i.e., the exhaust members 312a can be arranged in one or more lines in the z-axis direction).

[0056] The module housing 311 may further include a plurality of discharge holes in an area corresponding to the exhaust members 312a of the battery cells 312. Each of the discharge holes may be configured as a discharge path for discharging gas through one of the exhaust members 312a of one of the battery cells 312, and may be a path for supplying the fire extinguishing agent discharged through the fire extinguishing agent pipe 200.

[0057] A plurality of tube guides 330 on which the module tubes 230 are mounted may be coupled in the frame 320. The tube guides 330 and the battery modules 310 may be accommodated in the frame 320 and may be alternately stacked in the vertical direction (y-axis direction). The tube guides 330 may be spaced apart from the upper portion of the battery module 310 by a certain distance (e.g., spaced apart by a gap).

[0058] Each tube guide 330 may have a flat plate shape, a coupling portion 332 coupled to the frame 320, for example, mounted inside the frame 320 may be provided on one side thereof, and a receiving portion 331 in which the module tube 230 is received may be provided on the other side opposite to the one side. The coupling portion 332 and the receiving portion 331 of the tube guide 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 outer 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 be in contact with (e.g., in direct contact with) the inner side of the receiving portion 331.

[0059] The module tube 230 may be slidably coupled in a longitudinal direction (z-axis direction) to the receiving portion 331 of the tube guide 330. The module tube 230 may be in the form of a tube. Figure 4 yes Figure 3C The enlarged view of part "4" is shown in FIG. Figure 4 As shown in , a fixing portion 331a for fixing the module tube 230 may be provided on the upper side of the accommodating portion 331 of the tube guide 330. In one or more embodiments, the fixing portion 331a may be or include a hook configured to fix the module tube 230 accommodated in the accommodating portion 331, such as to prevent the module tube 230 accommodated in the accommodating portion 331 from accidentally falling off from the accommodating portion 331. The fixing portion 331a may extend in the horizontal direction (x-axis direction) along the upper side of the accommodating portion 331. A plurality of fixing portions 331a may be provided in the accommodating portion 331 and spaced apart from each other in the horizontal (x-axis) direction.

[0060] A plurality of module tubes 230 may be connected by a branch tube 220 on the rear surface of the frame 320. In one or more embodiments, the branch tube 220 may connect a plurality of module tubes 230 in the same row. The branch tube 220 may be fixed on the rear surface of the frame 320 by a branch tube fixing portion 340. In one or more embodiments, the branch tube fixing portion 340 may be a bracket, but the present disclosure is not limited thereto.

[0061] A plurality of through holes may be located at intervals in the longitudinal direction (z-axis direction) on the lower side of the receiving portion 331. The through holes may be located above a portion corresponding to the vent 312a of each battery cell 312 in the battery module 310. Figure 5 It is along Figure 3A A cross-sectional view taken along line “5-5”.

[0062] The module tube 230 may include a plurality of duct nozzles 232 located on the lower side of the module tube 230. The duct nozzles 232 may be arranged or oriented in a direction approximately perpendicular to the outer surface of the exhaust member 312a. In one or more embodiments, the duct nozzles 232 may be holes passing through the module tube 230. The duct nozzles 232 may be located at positions corresponding to the exhaust members 312a of each of the plurality of battery cells 312. The area where the duct nozzles 232 are located in the module tube 230 may be covered by the cover portion 231. Because the duct nozzles 232 of the module tube 230 are generally not exposed to the outside, the fire extinguishing agent inside the module tube 230 may be arranged only inside the duct.

[0063] However, when an event occurs in a specific battery cell 312 and gas is ejected through the exhaust member 312a, the cover portion 231 of the duct nozzle 232 covering the exhaust member 312a above may be melted, so that the fire extinguishing agent may be ejected through the duct nozzle 232 onto the battery cell 312 where the event occurs. In one or more embodiments, the gas discharged through the exhaust member 312a may melt the cover portion 231 outside the duct nozzle 232 through the discharge hole of the module housing 311 and the corresponding through hole of the accommodating portion 331. In one or more embodiments, the lower surface of the accommodating portion 331 may 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.

[0064] In one or more embodiments, the cover portion 231 may be made of a thermoplastic resin such as polypropylene (PP) having a melting point of approximately 160° C. or polycarbonate (PC) having a melting point of approximately 230° C. Although it has been described that the cover portion 231 is configured to melt due to the heat of the exhaust gas, in one or more embodiments, the cover portion 231 may be cracked or broken into various forms due to the heat of the exhaust gas, thereby exposing the conduit nozzle 232 of the module pipe 230. In one or more embodiments, the temperature of the gas and heat exhausted through the exhaust member 312a may be in the range of about (approximately) 800° C. to about (approximately) 1200° C., and the cover portion 231 may be configured to melt at a temperature of about (approximately) 200° C.

[0065] In one or more embodiments, Figure 6 As shown in , each of the conduit nozzles 232a may face the center of the exhaust member 312a of one of the battery cells 312. The conduit nozzle 232a may be arranged adjacent to the exhaust member 312a in the lower region of the module tube 230a. In one or more embodiments, the conduit nozzle 232a may be arranged between a line connecting the center of the module tube 230a and the center of the exhaust member 312a and a line extending downward from the center of the module tube 230a. In an embodiment where the conduit nozzle 232a is oriented to face the center of the exhaust member 312a, it may be easier to spray the fire extinguishing agent into the exhaust member 312a.

[0066] In one or more embodiments, the module tube 230a and the accommodating portion 331 of the tube guide 330 may be spaced apart from the center of the vent 312a in the horizontal direction (x-axis direction). In one or more embodiments, the module tube 230a and the accommodating portion 331 of the tube guide 330 may be configured to not overlap with the central area of ​​the vent 312a of the plurality of battery cells 312 in a plan view (i.e., a top view). The central area of ​​the vent 312a may be an area extending approximately 2 mm to approximately 6 mm from the center of the vent 312a of each of the plurality of battery cells 312 to each of the two sides. In the central area of ​​the vent 312a, in response to an event occurring in the battery cell 312, the module tube 230a may melt due to high temperature and / or high pressure gas, thereby causing a fire and the loss of the module tube 230a. However, in one or more embodiments, because the module tube 230a and the accommodating portion 331 of the tube guide 330 are configured not to overlap with the central area of ​​the exhaust member 312a in the horizontal direction (x-axis direction), only the cover portion 231 can be melted due to the high temperature and / or high pressure gas discharged through the exhaust member 312a, and the module tube 230a can be prevented from melting and being lost.

[0067] In one or more embodiments, the module tube 230a may be a cylindrical tube. In one or more embodiments, the center of the module tube 230a may 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 may be spaced apart from the center of the exhaust member 312a by a distance ranging from approximately 13 mm to approximately 18.2 mm to prevent the loss of the module tube 230a and facilitate the melting of the cover portion 231 so that the fire extinguishing agent can be ejected through the duct nozzle 232a.

[0068] Fig. 7A and Figure 7B Images of the module tube 230 a in the case of the example and the comparative example after an experiment was conducted on the loss state of the module tube 230 a after an event occurred in the battery cell 312 are shown.

[0069] Fig. 7A An image of the module tube 230a after an event is shown according to one embodiment, wherein the center of the module tube 230a is spaced approximately 13 mm from the center of the exhaust member 312a, 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.

[0070] Figure 7B An image of the module tube 230a after the incident according to the comparative example in which the center of the module tube 230a is arranged above the central area of ​​the exhaust member 312a is shown. Therefore, when the module tube 230a is lost, the fire extinguishing agent should be supplied through the exhaust member 312a of the battery cell 312 where the incident occurred, but since the fire extinguishing agent is sprayed to the area other than the exhaust member 312a, it is difficult to suppress the fire of the battery cell 312 where the incident occurred.

[0071] like Fig. 7A and Figure 7B As shown in the experimental results shown in the comparative example ( Figure 7B ), it can be seen that the die tube 230a is melted and lost due to the high temperature or high pressure gas discharged through the exhaust member 312a. Fig. 7A In the embodiment depicted in FIG. 2 , it can be seen that, in the die tube 230 a , the region other than the conduit nozzle 232 a can be prevented from melting.

[0072] like Figure 8As shown in , a module tube 230b formed by attaching two plates via brazing can be used as a module tube 230. In one or more embodiments, the module tube 230b may have an internal accommodation space in which the fire extinguishing agent can be moved or transported. In addition, the accommodation space may include two accommodation spaces extending in the longitudinal direction (z-axis direction) of the battery module 310. In addition, the module tube 230b may be provided so that the accommodation space does not overlap with the center of the exhaust member 312a in the horizontal direction (x-axis direction). In one or more embodiments, the module tube 230b has an accommodation space on both sides in the width direction relative to the center of the exhaust member 312a, and the area connected by welding may be located in the central part of the module tube 230b. The module tube 230b may include a conduit nozzle 232b located on the lower side, and the conduit nozzle 232b may be covered by the cover portion 231b. The two accommodation spaces of the module tube 230b can provide a fire extinguishing agent in response to an event occurring in the battery cell 312, thereby enabling faster fire extinguishing.

[0073] In one or more embodiments, Fig. 9 As shown in , the module tube 230c can be accommodated in the cover 311b of the module housing 311 of the battery module 310. In one or more embodiments, the battery cell 312 can be accommodated in the module housing 311, and the module housing 311 may include a housing body 311a having an accommodation space in which the battery cell 312 is accommodated and an open upper portion, and a cover 311b connected to the open upper portion of the housing body 311a. In addition, the module tube 230c can be accommodated inside the cover 311b. The cover 311b may include an accommodation portion 331 for accommodating the module tube 230c, and the module tube 230c may 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 housing 311, a separate tube guide rail 330 may not be provided. The cover 311b may be used as the tube guide rail 330.

[0074] Furthermore, the accommodation portion 331 provided in the cover 311 b may also be configured not to overlap with the center of the gas exhaust member 312 a in the horizontal direction (x-axis direction).

[0075] In a battery module and an energy storage system including the same according to an embodiment of the present disclosure, the fire extinguishing duct is horizontally spaced apart from the center of the exhaust member, thereby preventing the duct from losing heat due to gas exhausted through the exhaust member caused by an event.

[0076] The above description is only for implementing the embodiments of the battery module and the energy storage system including the battery module according to the present disclosure, and the present disclosure is not limited to the above embodiments. The technical spirit of the present disclosure also includes the scope that any ordinary technician in the field of the present disclosure can make various modifications without departing from the main purpose of the present disclosure as claimed in the claims.

Claims

1. A battery module, comprising: A module housing, including a receiving space; A plurality of battery cells are accommodated in the accommodation space; a module pipe located above the module housing and configured to carry a fire extinguishing agent; as well as A tube guide rail includes a receiving portion for receiving the module tube, the tube guide rail being on the module housing, wherein the plurality of battery cells include a plurality of vents, wherein the plurality of exhaust members are arranged in a collinear manner in the longitudinal direction of the battery module, and The module pipe and the receiving portion do not overlap with central areas of the plurality of exhaust members in a horizontal direction intersecting the longitudinal direction. 2 . The battery module according to claim 1 , wherein the module tube comprises a plurality of conduit nozzles, each of the plurality of conduit nozzles being in a region corresponding to the exhaust member of each of the plurality of battery cells.

3. The battery module of claim 2, further comprising a cover portion, and wherein each conduit nozzle is a hole passing through the module tube and is covered by the cover portion. The battery module according to claim 3 , wherein the cover portion comprises polypropylene or polycarbonate.

5. The battery module of claim 2, wherein each of the conduit nozzles is between a line connecting a center of the module tube and a horizontal center of one of the plurality of vents and a line extending downward from the center of the module tube. 6 . The battery module according to claim 1 , wherein the module tube is a cylindrical tube that is spaced apart from a horizontal center of each of the plurality of vents by 0.5 to 0.7 times a circumference of the module tube. 7 . The battery module according to claim 1 , wherein a central region of each of the plurality of vents is a region extending 2 mm to 6 mm in opposite directions from a center of each vent. 8 . The battery module according to claim 1 , further comprising a plurality of through holes located at a lower side of the accommodation portion at intervals in the longitudinal direction. 9 . The battery module according to claim 8 , wherein each of the plurality of through holes is located above a portion corresponding to the vent of each of the plurality of battery cells. 10 . The battery module according to claim 1 , further comprising a plurality of fixing parts at an upper side of the receiving part, the plurality of fixing parts comprising 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 comprises a receiving space configured to carry the fire extinguishing agent. 12 . The battery module according to claim 11 , wherein the module tube includes two accommodation spaces extending in the longitudinal direction. 13 . The battery module according to claim 12 , wherein each of the two accommodation spaces of the module tube does not overlap with a center of each of the plurality of vents in the horizontal direction.

14. An energy storage device comprising the battery module according to any one of claims 1 to 4.

15. The energy storage device according to claim 14, further comprising: a frame in which a plurality of battery modules identical to the battery module are accommodated; a branch pipe configured to connect the module pipe of each of the plurality of battery modules on a rear surface of the frame and fixed on the rear surface of the frame; as well as The main pipe is configured to connect the branch pipes and transport the fire extinguishing agent stored in the fire extinguishing agent unit to the branch pipes. 16 . The energy storage device according to claim 15 , wherein a portion of the tube guide opposite to the receiving portion is installed inside the frame.

17. A battery module, comprising: The main body of the module housing includes a receiving space and an open upper portion; A plurality of battery cells are accommodated in the accommodation space; a module pipe located above the module housing and configured to carry a fire extinguishing agent; as well as a cover including a receiving portion for receiving the module tube, the cover being coupled to the open upper portion of the main body of the module housing, wherein the plurality of battery cells include a plurality of vents, wherein the plurality of exhaust members of the plurality of battery cells are arranged in a collinear manner in the longitudinal direction of the battery module, and The module pipe and the receiving portion do not overlap with central areas of the plurality of exhaust members in a horizontal direction intersecting the longitudinal direction.

Images