Battery module

Abstract

A battery module is disclosed. A battery module according to an embodiment of the present invention may comprise: a case providing an internal space; a plurality of battery cells disposed in the case and stacked in the left-right direction; a fire extinguishing tank disposed between the plurality of battery cells and the case and providing an internal space; a fire extinguishing tube communicating with the fire extinguishing tank and extending in the left-right direction; a nozzle communicating with the fire extinguishing tube and protruding toward the plurality of battery cells; and a sealing member that seals the nozzle.

Description

Technical Field

[0001] The present disclosure relates to a battery module.

[0002] This application is based on and claims the benefit of priority of Korean Patent Application No. 10-2023-0090626 filed in the Korean Intellectual Property Office on July 12, 2023, and all contents disclosed in the specification and drawings of that application are incorporated into this application by reference. Background Art

[0003] As the demand for portable electronic products such as laptop computers, cameras, mobile phones, etc. rapidly increases, and as robots, electric vehicles, etc. are gradually commercialized, active research on high-performance secondary batteries that can be repeatedly charged and discharged is underway.

[0004] Currently commercialized secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries and lithium secondary batteries. Among them, lithium secondary batteries have attracted much attention due to their advantages of almost no memory effect, very low self-discharge rate, high energy density and free charge and discharge compared to nickel-based secondary batteries.

[0005] These lithium secondary batteries generally use lithium-based oxides and carbon materials as positive and negative active materials, respectively. The lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with a positive electrode active material and a negative electrode active material, respectively, are provided with a separator therebetween, and an outer casing, i.e., a battery casing, that accommodates and seals the electrode assembly and the electrolyte.

[0006] Generally, lithium secondary batteries may be divided into can-type secondary batteries in which an electrode assembly is accommodated in a metal can and pouch-type secondary batteries in which an electrode assembly is accommodated in a pouch of an aluminum laminate, according to the shape of an outer case.

[0007] Recently, secondary batteries have been widely used in medium and large devices for driving or energy storage, such as electric vehicles and energy storage systems (ESS), and small devices, such as portable electronic devices. The above-mentioned multiple secondary batteries can be electrically connected and accommodated in a module housing to form a battery module. In addition, the above-mentioned multiple battery modules can be connected to form a battery pack.

[0008] However, in the case where a large number of secondary batteries (battery cells) or a large number of battery modules are densely accommodated in a small space, they may be susceptible to thermal events. In particular, if an event such as thermal runaway occurs in any one battery cell, high-temperature gas, flame, and heat may be generated. If such gas, flame, or heat is transferred to other battery cells included in the same battery module, an explosive chain reaction such as heat propagation may occur. In addition, such a chain reaction may cause accidents such as fire or explosion in other battery modules and related battery modules.

[0009] In addition, since medium and large battery packs used in electric vehicles include a large number of battery cells and battery modules to increase output and / or capacity, the risk of thermal chain reactions may be further increased. In addition, in the case of a battery pack installed in an electric vehicle or the like, there may be users such as drivers nearby. Therefore, if a thermal event occurring in a specific battery module fails to be controlled and causes a chain reaction, it may cause significant characteristic damage and casualties.

[0010] Therefore, when a thermal event occurs in a battery cell, immediate measures need to be taken, such as providing a fire extinguishing agent. Summary of the invention

[0011] Technical issues

[0012] The present disclosure is directed to solving the above-referenced problems and other problems.

[0013] The present disclosure is also directed to providing a battery module capable of immediately supplying a fire extinguishing agent in the event of a thermal event.

[0014] The present disclosure is also directed to providing a battery module that is capable of minimizing the amount of fire extinguishing agent remaining in a fire extinguishing tank in the event of a thermal event.

[0015] Technical Solution

[0016] In one aspect of the present disclosure, a battery module is provided, comprising: a shell configured to provide an internal space; a plurality of battery cells located within the shell and stacked in a left-right direction; a fire extinguisher tank located between the plurality of battery cells and the shell and configured to provide an internal space; a fire extinguisher pipe connected to the fire extinguisher tank and extending in the left-right direction; a nozzle connected to the fire extinguisher pipe and protruding toward the plurality of battery cells; and a sealing member configured to seal the nozzle.

[0017] Furthermore, the fire extinguishing pipe and the nozzle may be configured to have electrical insulation.

[0018] Additionally, the sealing member may be configured to melt when a thermal event occurs.

[0019] In addition, the battery module may further include a pressurizing member located between the fire extinguishing tank and the housing and configured to pressurize the fire extinguishing tank.

[0020] The battery module may further include an elastic member between the pressurizing member and the case.

[0021] Furthermore, the fire extinguishing tank may be configured to be foldable.

[0022] Furthermore, the fire extinguishing tank may include: a rigid portion connected to the fire extinguishing pipe; and a flexible portion coupled to the rigid portion and made of a flexible material.

[0023] Furthermore, the pressurizing member may be configured to have a plate shape and to make surface contact with the fire extinguishing tank.

[0024] Furthermore, the fire extinguishing pipe may include a first fire extinguishing pipe located in a front portion of the plurality of battery cells, and the nozzle may include a first nozzle protruding toward a terrace portion of the plurality of battery cells.

[0025] In addition, the fire extinguishing pipe may include a second fire extinguishing pipe located at an upper side of the plurality of battery cells, and the nozzle may include a second nozzle protruding toward a central portion of the plurality of battery cells.

[0026] In addition, the fire extinguishing tank may include: a first fire extinguishing tank located on the right side of the plurality of battery cells; and a second fire extinguishing tank located on the left side of the plurality of battery cells.

[0027] Furthermore, the nozzle may include a metal mesh provided at one end, and the sealing member may be configured to seal the metal mesh.

[0028] Furthermore, the nozzle may be configured as a plurality of nozzles, and the sealing member may be configured to seal the plurality of nozzles.

[0029] A battery pack according to one aspect of the present disclosure may include the battery module of the present disclosure.

[0030] A vehicle according to one aspect of the present disclosure may include the battery module of the present disclosure.

[0031] Beneficial effects

[0032] According to at least one of the embodiments of the present disclosure, when a thermal event occurs in a battery module, a fire extinguishing agent may be immediately supplied, thereby improving thermal safety.

[0033] According to at least one of the embodiments of the present disclosure, the fire extinguishing agent may be supplied so that the residual fire extinguishing agent is minimized in the fire extinguishing tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings illustrate preferred embodiments of the present disclosure and, together with the detailed description of the present invention, are used to provide further understanding of the technical concept of the present disclosure, and therefore, the present disclosure is not to be construed as being limited to the accompanying drawings.

[0035] Figure 1 is a perspective view showing a battery module according to an embodiment of the present disclosure.

[0036] Figure 2 yes Figure 1 A partial exploded view of the battery module in the .

[0037] Figure 3 yes Figure 2 An enlarged view of a portion of the configuration.

[0038] Figure 4 is schematically shown along Figure 1 A partial cross-sectional view of the configuration taken along line AA' in FIG.

[0039] Figure 5 is a schematic diagram showing when a thermal event occurs along Figure 1 A partial cross-sectional view of the configuration taken along line AA' in FIG.

[0040] Figure 6 is a diagram showing a modified embodiment of the Figure 1 A cross-sectional view of the configuration taken along line AA' in FIG.

[0041] Figure 7 FIG. 1 is a diagram showing a modified embodiment of the invention in which a thermal event occurs along the Figure 1 A cross-sectional view of the configuration taken along line AA' in FIG.

[0042] Figure 8 is a diagram showing a modified embodiment Figure 2 Figure 4 is a diagram of a portion of a configuration.

[0043] Fig. 9 is a schematic diagram showing a modified embodiment of the Figure 1 A cross-sectional view of the configuration taken along line AA' in FIG.

[0044] Fig.10 is a diagram illustrating a nozzle of a battery module according to one embodiment of the present disclosure.

[0045] Fig.11 is a diagram illustrating a nozzle of a battery module according to another embodiment of the present disclosure.

[0046] Fig.12 is a diagram illustrating a nozzle of a battery module according to another embodiment of the present disclosure.

[0047] Fig.13 is a diagram illustrating a nozzle of a battery module according to another embodiment of the present disclosure.

[0048] Fig.14 is a diagram illustrating a nozzle of a battery module according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0049] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Before the description, it should be understood that the terms used in the specification and the appended claims should not be interpreted as limited to the general and dictionary meanings, but are interpreted based on the meanings and concepts corresponding to the technical aspects of the present disclosure on the basis of the principle that the inventor is allowed to appropriately define the terms for the best interpretation.

[0050] Therefore, the embodiments of this specification and the configurations proposed in the drawings only indicate the most preferred embodiments of the present disclosure and do not represent all technical concepts of the present disclosure, and therefore it should be understood that various equivalents and modifications may be made thereto when an application is filed.

[0051] Figure 1 is a perspective view showing a battery module according to an embodiment of the present disclosure. Figure 2 yes Figure 1 A partial exploded view of the battery module in the . Figure 1 and Figure 2 , a battery module according to an embodiment of the present disclosure may include a case 100 , a battery cell 200 , a fire extinguishing tank 300 , a fire extinguishing tube 400 , a nozzle 500 , and a sealing member 700 .

[0052] The housing 100 may provide a space therein. The housing 100 may have a rectangular parallelepiped shape. The housing 100 may include a frame 120, a front cover 110, and a rear cover 130. The frame 120 may have a rectangular parallelepiped shape having a front opening and a rear opening. The frame 120 may include four side panels. The frame 120, the front cover 110, and the rear cover 130 may be configured as a plurality of components. A plurality of components may be fastened, coupled, welded, attached, or fixed to each other to form the housing 100.

[0053] The battery cell 200 may be located inside the housing 100. A plurality of battery cells 200 may be provided, and the plurality of battery cells 200 may be accommodated in the housing 100. In this case, the battery cell 200 may indicate a secondary battery. In addition, the battery cell 200 may be a pouch-type battery cell 200. The battery cell 200 may have a rectangular parallelepiped shape or a pouch shape. A plurality of battery cells 200 may be stacked on each other. A plurality of battery cells 200 may be stacked in the left-right direction or in the Y-axis direction.

[0054] The fire extinguishing tank 300 may be located inside the housing 100. The fire extinguishing tank 300 may provide an internal space. The fire extinguishing tank 300 may be located between the plurality of battery cells 200 and the housing 100. For example, the fire extinguishing tank 300 may be located between the outermost battery cell 200 among the plurality of battery cells 200 and the side plate of the housing 100. The fire extinguishing tank 300 may contain a fire extinguishing agent 600 or may be filled with a fire extinguishing agent 600 therein. The fire extinguishing agent 600 may be configured as a liquid. For example, the fire extinguishing agent 600 may be configured as Novec 1230.

[0055] The fire extinguishing pipe 400 may be communicated with the fire extinguishing tank 300. The fire extinguishing pipe 400 may be extended long in the left-right direction, the Y-axis direction, or the stacking direction of the plurality of battery cells 200.

[0056] The nozzle 500 may be in communication with the fire extinguishing pipe 400. Alternatively, the nozzle 500 may extend or protrude from the fire extinguishing pipe 400. The nozzle 500 may protrude toward the plurality of battery cells 200. A plurality of nozzles 500 may be provided. The corresponding nozzles 500 may protrude toward the plurality of battery cells 200. For example, each nozzle 500 may be provided to correspond to a single battery cell 200.

[0057] The sealing member 700 may seal the nozzle 500. The sealing member 700 may seal or cover the spray hole or end of the nozzle 500. For example, the sealing member 700 may be configured as a material such as paraffin.

[0058] According to this configuration of the present disclosure, when a thermal event occurs, the fire extinguishing agent 600 can be supplied to the battery cell 200. When a thermal event occurs, the sealing member 700 may melt due to ignition particles (such as exhaust gas or sparks). As a result, the fire extinguishing agent 600 contained in the fire extinguishing tank 300 can be ejected through the nozzle 500 in which the sealing member 700 melts. Therefore, the fire extinguishing agent 600 can be quickly supplied without electrical or mechanical control, thereby suppressing heat propagation. Therefore, the thermal safety of the battery module can be improved.

[0059] Reference Figure 1 and Figure 2, the fire extinguishing pipe 400 and the nozzle 500 of the battery module according to the embodiment of the present disclosure may be configured to have electrical insulation.

[0060] According to such a configuration of the present disclosure, the electrical stability of the battery module may be improved.

[0061] Reference Figure 1 and Figure 2 , the sealing member 700 of the battery module according to the embodiment of the present disclosure may be configured to melt when a thermal event occurs. When the sealing member 700 melts, the injection hole or end of the nozzle 500 may be opened.

[0062] According to this configuration of the present disclosure, when a thermal event occurs, the sealing member 700 can be melted so that the fire extinguishing agent 600 can be supplied to the battery cell 200. Therefore, the fire extinguishing agent 600 can be quickly supplied without electrical or mechanical control, thereby suppressing heat propagation. Therefore, the thermal safety of the battery module can be improved.

[0063] Figure 3 yes Figure 2 An enlarged view of a portion of the configuration. Figure 4 is schematically shown along Figure 1 A partial cross-sectional view of the configuration taken along line AA' in FIG. Figure 5 is a schematic diagram showing when a thermal event occurs along Figure 1 A partial cross-sectional view of the configuration taken along line AA' in FIG. Figures 3 to 5 , the battery module according to an embodiment of the present disclosure may further include a pressurizing member 800, which is located between the fire extinguishing tank 300 and the housing 100 and is configured to pressurize the fire extinguishing tank 300. The pressurizing member 800 may pressurize the fire extinguishing tank 300 regardless of whether the sealing member 700 is melted. When the sealing member 700 seals the nozzle 500, the fire extinguishing agent 600 may not be supplied to the battery cell 200 even if the pressurizing member 800 pressurizes the fire extinguishing tank 300. On the other hand, if the sealing member 700 melts due to a thermal event, causing the nozzle 500 to open, the pressurizing member 800 may pressurize the fire extinguishing tank 300 so that the fire extinguishing agent 600 can be supplied to the battery cell 200.

[0064] According to this configuration of the present disclosure, when a thermal event occurs, the fire extinguishing agent 600 can be quickly supplied to the battery cell 200. Therefore, the fire extinguishing agent 600 can be quickly supplied without electrical or mechanical control, thereby suppressing heat propagation. Therefore, the thermal safety of the battery module can be improved.

[0065] Reference Figures 3 to 5, the battery module according to an embodiment of the present disclosure may further include an elastic member 900 located between the pressurizing member 800 and the housing 100. The elastic member 900 may be located between the pressurizing member 800 and the side plate of the housing 100. For example, the elastic member 900 may be a spring 900. The spring 900 may be maintained in a compressed state between the pressurizing member 800 and the housing 100. Therefore, the restoring force of the spring 900 may act in a direction of pushing the pressurizing member 800 toward the fire extinguishing tank 300.

[0066] According to this configuration of the present disclosure, the elastic member 900 can provide restoring force to the pressurizing member 800 so that the fire extinguishing agent 600 can be quickly supplied to the battery cell 200. In addition, even if the supply of the fire extinguishing agent 600 is activated, the elastic member 900 can appropriately maintain the pressurizing force of the pressurizing member 800.

[0067] Reference Figures 3 to 5 , the fire extinguishing tank 300 of the battery module according to the embodiment of the present disclosure may include a rigid portion 311 connected to the fire extinguishing pipe 400 and a flexible portion 312 coupled to the rigid portion 311 and made of a flexible material. The rigid portion 311 and the flexible portion 312 may form an internal space of the fire extinguishing tank 300. The flexible portion 312 may be fastened, attached, coupled or fixed to the rigid portion 311. The flexible portion 312 may be contracted or folded by the pressurizing member 800 and the elastic member 900. In addition, the flexible portion 312 may be contracted or folded when the fire extinguishing agent 600 is supplied.

[0068] According to such a configuration of the present disclosure, the flexible portion 312 can facilitate the supply of the fire extinguishing agent 600. Therefore, the thermal safety of the battery module can be improved.

[0069] Reference Figures 3 to 5 , the pressurizing member 800 of the battery module according to an embodiment of the present disclosure may be configured to have a plate shape and to be in surface contact with the fire extinguishing tank 300. The pressurizing member 800 may be in surface contact with one side of the fire extinguishing tank 300. In addition, the pressurizing member 800 may be in surface contact with the flexible portion 312 of the fire extinguishing tank 300. The pressurizing member 800 may transfer the restoring force of the elastic member 900 to the flexible portion 312. When the sealing member 700 seals the nozzle 500, the flexible portion 312 may remain unchanged. When a thermal event occurs, the nozzle 500 may be opened, and the pressurizing member 800 may fold, pressurize, move, or shrink the flexible portion 312 toward the rigid portion 311.

[0070] According to such a configuration of the present disclosure, the flexible portion 312 and the pressurizing member 800 can quickly and easily supply the fire extinguishing agent 600. In addition, the fire extinguishing agent 600 can be supplied so that the residual fire extinguishing agent 600 in the fire extinguishing tank 300 is minimized. Therefore, the thermal safety of the battery module can be improved.

[0071] Figure 6 is a diagram showing a modified embodiment of the Figure 1 A cross-sectional view of the configuration taken along line AA' in FIG. Figure 7 FIG. 1 is a diagram showing a modified embodiment of the invention in which a thermal event occurs along the Figure 1 A cross-sectional view of the configuration taken along line AA' in FIG. Figure 6 and Figure 7 , the fire extinguishing tank 300 of the battery module according to the embodiment of the present disclosure may be configured to be foldable. The fire extinguishing tank 300 may be configured as a pleated structure. When the fire extinguishing tank 300 is filled with the fire extinguishing agent 600, the fire extinguishing tank 300 may be maintained in a state in which the pleats are unfolded. When the fire extinguishing agent 600 is supplied, the pleats of the fire extinguishing tank 300 may be folded by the pressurizing member 800.

[0072] According to such a configuration of the present disclosure, the folding or contraction of the fire extinguishing tank 300 can be easily performed. Therefore, the supply of the fire extinguishing agent 600 can be quickly and easily performed. Therefore, the thermal safety of the battery module can be improved.

[0073] Figure 8 The modified embodiment is shown in FIG. Figure 2 Figure 1.1 shows a portion of the configuration of Figure 8 , the fire extinguishing pipe 400 of the battery module according to an embodiment of the present disclosure may include a first fire extinguishing pipe 410 located in the front of the plurality of battery cells 200, and the nozzle 500 may include a first nozzle 510 protruding toward a terrace portion 201 of the plurality of battery cells 200. The first fire extinguishing pipe 410 and the first nozzle 510 may be positioned to be separated from the battery cells 200. The first nozzle 510 may be positioned adjacent to the terrace portion 201 of the battery cells 200.

[0074] According to such a configuration of the present disclosure, when a thermal event occurs, the first nozzle 510 may be exposed to exhaust gas or combustible particles. Therefore, the sealing member 700 may be melted so that the fire extinguishing agent 600 may be sprayed.

[0075] Reference Figure 8 , the fire extinguishing pipe 400 of the battery module according to an embodiment of the present disclosure may include a second fire extinguishing pipe 420 located at an upper side of the plurality of battery cells 200, and the nozzle 500 may include a second nozzle 520 protruding toward an upper central portion 202 of the plurality of battery cells 200. The second fire extinguishing pipe 420 and the second nozzle 520 may be positioned to be separated from the battery cell 200. The second nozzle 520 may be positioned adjacent to the upper terrace portion 201 of the battery cell 200.

[0076] According to such a configuration of the present disclosure, when a thermal event occurs, the second nozzle 520 may be exposed to exhaust gas or combustible particles. Therefore, the sealing member 700 may be melted so that the fire extinguishing agent 600 may be sprayed.

[0077] Reference Figure 8 , the fire extinguishing pipe 400 of the battery module according to an embodiment of the present disclosure may include a third fire extinguishing pipe 430 located in the rear of the plurality of battery cells 200, and the nozzle 500 may include a third nozzle 530 protruding toward the terrace portion 201 of the plurality of battery cells 200. The third fire extinguishing pipe 430 and the third nozzle 530 may be positioned to be separated from the battery cell 200. The third nozzle 530 may be positioned adjacent to the terrace portion 201 of the battery cell 200. In addition, the first fire extinguishing pipe 410, the second fire extinguishing pipe 420, and the third fire extinguishing pipe 430 may be collectively referred to as a fire extinguishing pipe 400. In addition, the first nozzle 510, the second nozzle 520, and the third nozzle 530 may be collectively referred to as a nozzle 500.

[0078] According to such a configuration of the present disclosure, when a thermal event occurs, the third nozzle 530 may be exposed to exhaust gas or combustible particles. Therefore, the sealing member 700 may be melted so that the fire extinguishing agent 600 may be sprayed.

[0079] Fig. 9 is a schematic diagram showing a modified embodiment of the Figure 1 A cross-sectional view of the configuration taken along line AA' in FIG. Fig. 9 , the fire extinguishing tank 300 of the battery module according to the embodiment of the present disclosure may include a first fire extinguishing tank 310 located on the right side of the plurality of battery cells 200 and a second fire extinguishing tank 320 located on the left side of the plurality of battery cells 200. The first fire extinguishing tank 310 and the second fire extinguishing tank 320 may be communicated with each other through the fire extinguishing pipe 400. The first fire extinguishing tank 310 and the second fire extinguishing tank 320 may be pressurized by the pressurizing member 800, respectively.

[0080] According to such a configuration of the present disclosure, the amount of the fire extinguishing agent 600 contained in the battery module can be increased. Therefore, the thermal safety of the battery module can be improved.

[0081] Fig.10 is a diagram illustrating a nozzle 500 of a battery module according to one embodiment of the present disclosure. Fig.10 (a) is a front view of the injection hole of the nozzle 500, and Fig.10 (b) is a side view of the nozzle 500. Fig.10, the injection hole or one end of the nozzle 500 of the battery module according to the embodiment of the present disclosure may be sealed with a sealing member 700. The sealing member 700 may seal the injection hole of the nozzle 500 and at least a portion of the side of the nozzle 500. In addition, at least a portion of the sealing member 700 may be located inside the nozzle 500.

[0082] According to such a configuration of the present disclosure, unless a thermal event occurs, the sealing member 700 can stably seal the nozzle 500. Therefore, thermal safety of the battery module can be improved.

[0083] Fig.11 is a diagram illustrating a nozzle 500 of a battery module according to another embodiment of the present disclosure. Fig.11 (a) is a front view of the injection hole of the nozzle 500, and Fig.11 (b) is a side view of the nozzle 500. Fig.11 The nozzle 500 of the battery module according to the embodiment of the present disclosure may include an uneven portion 502 formed inside the nozzle. In addition, at least a portion of the sealing member 700 may be located inside the nozzle 500 so as to be coupled, attached or fixed to the uneven portion 502.

[0084] According to such a configuration of the present disclosure, it is possible to increase a coupling force between the sealing member 700 and the nozzle 500. Therefore, the sealing member 700 can stably seal the nozzle 500.

[0085] Fig.12 is a diagram illustrating a nozzle 500 of a battery module according to another embodiment of the present disclosure. Fig.12 (a) is a front view of the injection hole of the nozzle 500, and Fig.12 (b) is a side view of the nozzle 500. Fig.12 , the nozzle 500 according to an embodiment of the present disclosure may be configured as a plurality of nozzles. In addition, each of the plurality of nozzles may include an uneven portion 502 formed on an inner side thereof. The sealing member 700 may seal all of the plurality of nozzles. In addition, at least a portion of the sealing member 700 may be located inside the plurality of nozzles so as to be coupled, attached or fixed to the uneven portion 502.

[0086] According to such a configuration of the present disclosure, since the injection holes of the plurality of nozzles are formed to be small, the engagement force between the sealing member 700 and the plurality of nozzles can be increased. Therefore, the sealing member 700 can stably seal the plurality of nozzles.

[0087] Fig.13 is a diagram illustrating a nozzle 500 of a battery module according to another embodiment of the present disclosure. Fig.13 (a) is a front view of the injection hole of the nozzle 500, and Fig.13(b) is a side view of the nozzle 500. Fig.13 , the nozzle 500 of the battery module according to the embodiment of the present disclosure may include a metal mesh 501 disposed at one end thereof, and the sealing member 700 may seal the metal mesh 501. In addition, at least a portion of the sealing member 700 may be located inside the nozzle 500 so as to be coupled, attached or fixed to the metal mesh 501.

[0088] According to such a configuration of the present disclosure, it is possible to increase the engagement force between the sealing member 700 and the nozzle 500. Therefore, the sealing member 700 can stably seal the nozzle 500.

[0089] Fig.14 is a diagram illustrating a nozzle 500 of a battery module according to another embodiment of the present disclosure. Fig.14 (a) is a front view of the injection hole of the nozzle 500, and Fig.14 (b) is a side view of the nozzle 500. Fig.14 , the nozzle 500 of the battery module according to an embodiment of the present disclosure may have a plurality of holes 503 disposed at one end. The sealing member 700 may seal the plurality of holes 503. In addition, at least a portion of the sealing member 700 may be located inside the nozzle 500 so as to be coupled, attached or fixed to the plurality of holes 503.

[0090] According to such a configuration of the present disclosure, it is possible to increase the engagement force between the sealing member 700 and the nozzle 500. Therefore, the sealing member 700 can stably seal the nozzle 500.

[0091] The battery pack according to the present disclosure may include the battery module according to the present disclosure described above. In addition, in addition to the battery module according to the present disclosure described above, the battery pack according to the present disclosure may also include various components, for example, components of the battery pack known at the time of filing the present disclosure, such as BMS, bus bars, battery pack housing, relays, current sensors, etc.

[0092] The vehicle according to the present disclosure may include the battery module according to the above-mentioned present disclosure. The battery module according to the present disclosure may be applied to vehicles such as electric vehicles or hybrid electric vehicles. In addition, in addition to the battery module, the vehicle according to the present disclosure may also include various other components included in the vehicle, such as a body, a motor, a control device such as an ECU (electronic control unit), etc.

[0093] In addition, although terms indicating directions such as up, down, left, right, front, and back are used in this specification, it is obvious to those skilled in the art that these terms are only for convenience of explanation and may vary depending on the position of the target object or the position of the observer.

[0094] As described above, although the present disclosure has been described with reference to limited embodiments and drawings, the present disclosure is not limited thereto, and various modifications and changes are possible within the technical concept of the present disclosure and the equivalent scope of the claims described below by those skilled in the art to which the present disclosure belongs.

Claims

1. A battery module, comprising: a housing configured to provide an interior space; A plurality of battery cells, the plurality of battery cells are located in the housing and stacked in a left-right direction; a fire extinguishing tank, the fire extinguishing tank being located between the plurality of battery cells and the housing and being configured to provide an internal space, a fire extinguishing pipe, the fire extinguishing pipe being in communication with the fire extinguishing tank and extending in the left-right direction; a nozzle, the nozzle being in communication with the fire extinguishing pipe and protruding toward the plurality of battery cells; as well as A sealing member is configured to seal the nozzle.

2. The battery module according to claim 1, in, The fire extinguishing pipe and the nozzle are configured to have electrical insulation.

3. The battery module according to claim 1, in, The sealing member is configured to melt when a thermal event occurs.

4. The battery module according to claim 1, The battery module further includes a pressurizing member located between the fire extinguishing tank and the housing and configured to pressurize the fire extinguishing tank.

5. The battery module according to claim 4, The battery module further includes an elastic member located between the pressurizing member and the case.

6. The battery module according to claim 4, in, The fire extinguishing tank is configured to be foldable.

7. The battery module according to claim 4, in, The fire extinguisher tank comprises: a rigid portion connected to the fire extinguishing pipe; and A flexible portion is coupled to the rigid portion and is made of a flexible material.

8. The battery module according to claim 4, in, The pressurizing member is configured to have a plate shape and to make surface contact with the fire extinguishing tank.

9. The battery module according to claim 1, in, The fire extinguishing tube includes a first fire extinguishing tube located in a front portion of the plurality of battery cells, and The nozzle includes a first nozzle protruding toward a terrace portion of the plurality of battery cells.

10. The battery module according to claim 1, in, The fire extinguishing pipe includes a second fire extinguishing pipe located on an upper side of the plurality of battery cells, and Wherein, the nozzle includes a second nozzle protruding toward a central portion of the plurality of battery cells.

11. The battery module according to claim 1, in, The fire extinguisher tank comprises: a first fire extinguishing tank, the first fire extinguishing tank being located on the right side of the plurality of battery cells; and A second fire extinguishing tank is located on the left side of the plurality of battery cells.

12. The battery module according to claim 1, in, The nozzle includes a metal mesh disposed at one end, and Wherein, the sealing member is configured to seal the metal mesh.

13. The battery module according to claim 1, in, The nozzle is configured as a plurality of nozzles, and Wherein, the sealing member is configured to seal the plurality of nozzles. 14 . A battery pack comprising the battery module according to claim 1 . 15 . A vehicle comprising the battery module according to claim 1 .

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