Exhaust device, and battery pack and vehicle comprising same

Abstract

The exhaust device according to the present invention may comprise: a fixing member mounted in an opening of a frame to which a battery cell is mounted; a movable member that opens and closes the opening of the frame when at least a portion of the movable member moves within the fixed member; a blocking member provided on the fixing member to block at least one region of the opening of the frame; and a protrusion provided on the moving member to pass through the opening region of the blocking member.

Description

Technical Field

[0001] This disclosure relates to exhaust devices, and to battery packs and vehicles including such exhaust devices. Background Technology

[0002] With the rapid increase in demand for portable electronic devices such as laptops, cameras and mobile phones, and with the great commercialization of robots, electric vehicles and the like, research is currently underway on rechargeable and rechargeable secondary batteries.

[0003] Currently, commercially available rechargeable batteries include nickel-cadmium (NiCd) batteries, nickel-metal hydride (NiMH) batteries, nickel-zinc (NiZn) batteries, and lithium-ion batteries. Among these, lithium-ion batteries have attracted much attention compared to nickel-based batteries because they exhibit almost no memory effect (the reduction in rechargeable capacity when the battery is not fully discharged), have a very low self-discharge rate, and high energy density.

[0004] Lithium-ion secondary batteries primarily use lithium-based oxides and carbon materials as positive and negative electrode active materials, respectively. A lithium-ion secondary battery may include an electrode assembly in which a positive electrode plate and a negative electrode plate (with positive and negative active materials coated on them, respectively) are positioned with a separator located between the positive and negative electrode plates. Furthermore, the lithium-ion secondary battery may include an external material (i.e., a battery casing) that seals and houses the electrode assembly along with the electrolyte.

[0005] Generally, based on the shape of the external materials, lithium secondary batteries can be classified into can-type secondary batteries with electrode components embedded in a metal can and bag-type secondary batteries with electrode components embedded in an aluminum laminate.

[0006] Recently, secondary batteries have been widely used not only in small devices such as portable electronic devices, but also in medium-sized or large devices such as electric vehicles or energy storage systems (ESS) for operational or energy storage purposes. These secondary batteries can be formed into a battery module in which multiple secondary batteries are electrically connected and housed together in a module housing. Such battery modules can also be electrically connected in a narrow space to increase energy density and can form battery packs.

[0007] However, when multiple battery modules or cells are present in such a concentrated state, they are susceptible to accidents such as fires or explosions. Therefore, existing battery packs already include venting devices to release gases in the event of events such as thermal runaway within the battery pack.

[0008] Exhaust systems include blocking components designed to only release gases and prevent flames from erupting. However, because these blocking components are often blocked by dust or residue generated during events such as thermal runaway, the pressure inside the battery pack can become excessively high, potentially leading to a fire or explosion. Therefore, to address this issue, it is necessary to develop exhaust systems with novel structures. Summary of the Invention

[0009] Technical issues

[0010] One aspect provides an exhaust device configured to prevent the gas exhaust path from being blocked by dust, residual substances, etc.

[0011] Technical solution

[0012] According to one aspect, a venting device is provided for mounting to an opening portion of a frame to which a battery cell is mounted, the venting device comprising: a fixing member mounted to the opening portion of the frame; a moving member configured to open and close the opening portion of the frame by moving at least a portion of the moving member within the fixing member; a blocking member disposed on the fixing member and configured to block at least one region of the opening portion of the frame; and a protrusion disposed on the moving member and configured to penetrate the opening region of the blocking member.

[0013] The blocking component can be positioned further inward than the moving component in the direction in which the gas flows out through the exhaust device.

[0014] The fixing member may include a constraint configured to hold the moving member in place so as not to separate it from the opening of the frame.

[0015] The constraint section can include an exhaust flow path by opening at least one area of ​​the frame's opening portion.

[0016] The movable member may include: a first cover portion located outside the constraint portion and configured to cover the outside of the opening portion; a second cover portion located inside the constraint portion and configured to cover the inside of the opening portion; and a connecting portion configured to connect the first cover portion and the second cover portion.

[0017] The venting device may also include a sealing portion disposed between the first cover portion and the restraining portion.

[0018] The movable member may be disposed between the constraint part and the second cover part and may include an elastic part configured to be pressed by high-pressure gas generated in the frame and compressed by a pressing force within a predetermined range.

[0019] The blocking member may include a mesh member forming multiple openings.

[0020] The protrusion may be a plurality of pins inserted into the inner surface of the second cover to penetrate a plurality of openings in the mesh member.

[0021] Multiple pins can be formed with a length that allows multiple openings to be released when the elastic part is compressed, thus penetrating the mesh member.

[0022] According to another aspect, a battery pack including an exhaust device according to the present disclosure is provided.

[0023] According to another aspect, a vehicle is provided that includes a battery pack according to the present disclosure.

[0024] Beneficial effects

[0025] According to the example embodiment, obstruction of the exhaust device can be prevented. When gas is discharged through the opening area of ​​the blocking member, the protrusion prevents dust, residue, and other substances moving with the gas from accumulating near the blocking member. When gas is discharged, the protrusion of the moving member moves in the direction of gas discharge. When gas is not discharged, the protrusion of the moving member, which has already moved in this way, can move backward in the opposite direction to the direction of gas discharge and remove dust and residue accumulated near the blocking member. Therefore, the protrusion can prevent the accumulation of dust and residue by cleaning the blocking member under normal conditions when no gas is generated in the frame. Furthermore, in abnormal conditions where gas cannot be discharged due to obstruction of the blocking member, the protrusion can be operated to allow normal gas discharge by cleaning the blocking member.

[0026] According to this configuration, the exhaust device can be used continuously. This is because, due to the constraint provided, the moving member does not separate from the opening portion of the frame when the gas is being discharged and when the gas discharge ends.

[0027] According to the example embodiment, when the first cover is mounted to the frame in any direction, and when the first cover is mounted to the frame and positioned above it, the venting device can maintain the seal of the internal space of the frame when no gas is discharged. This is because when the elastic part is provided, the venting device will not be opened solely by the weight of the moving member. Furthermore, when the elastic part is decompressed after being compressed, the protrusion can remove dust from the blocking part with a stronger force due to the elastic energy.

[0028] According to the example implementation, gas venting can be made easier. When the moving member is pressed and moved by high-pressure gas, the multiple pins can become non-perforating through the multiple openings, allowing the area where gas can be vented to be increased. Attached Figure Description

[0029] Figure 1 An example of a battery pack including an exhaust device according to the present disclosure is shown.

[0030] Figure 2 This is a cross-sectional view illustrating the frame to which the exhaust device according to this disclosure is mounted.

[0031] Figure 3 This is a diagram illustrating the shape of the exhaust device according to this disclosure when gas emission is not being performed.

[0032] Figure 4 This is a diagram illustrating the shape of the exhaust device according to the present disclosure when performing gas emission.

[0033] Figure 5 An exhaust device according to the present disclosure is illustrated.

[0034] Figure 6 This is a diagram illustrating the fixing components included in the exhaust device according to the present disclosure.

[0035] Figure 7 This is a diagram illustrating the movable components included in the exhaust device according to the present disclosure.

[0036] Figure 8 This is a diagram illustrating the blocking member included in the exhaust device according to the present disclosure.

[0037] Figure 9 This is a diagram illustrating the shape of the blocking member and protrusion included in the exhaust device according to this disclosure when gas emission is not performed.

[0038] Figure 10 This is a diagram illustrating the shape of the blocking member and protrusion included in the exhaust device according to this disclosure when performing gas emission.

[0039] Figure 11 This is an exploded perspective view illustrating an exhaust device according to the present disclosure.

[0040] Figure 12 This is a diagram illustrating a vehicle according to this disclosure. Detailed Implementation

[0041] Prior to the description of this disclosure, the terms or words used in this disclosure and the appended claims are not limited to their general or dictionary definitions. Terms and words should be interpreted in accordance with the principle that the inventor can appropriately define the concepts of terms in order to best describe their invention. Therefore, since the exemplary embodiments described in this disclosure and the configurations illustrated in the drawings are merely the most desirable exemplary embodiments and do not represent all the technical spirit of this disclosure, it should be understood that various equivalents and modifications that can replace the exemplary embodiments and configurations may exist at the time of filing this application.

[0042] The same reference numerals or symbols shown in the accompanying drawings indicate components or elements that perform essentially the same function. For ease of description and understanding, the same reference numerals or symbols may be used to describe different exemplary embodiments. In other words, although multiple drawings illustrate elements with the same reference numerals, the multiple drawings do not imply only one exemplary embodiment.

[0043] In the following description, unless there is an obvious and contextually conflicting description, singular terms include plural terms. Terms such as “comprising” or “including” are used to indicate the presence of features, numbers, steps, operations, elements, components, or combinations thereof. It should be understood that these terms do not preclude the possibility that one or more other features, numbers, steps, operations, elements, components, or combinations thereof may be present or added.

[0044] Additionally, it should be noted in advance that expressions such as upper side, upper part, lower side, lower part, side surface, front surface or rear surface are based on the orientation illustrated in the figure, and the expressions may change when the orientation of the corresponding object changes.

[0045] Terms including ordinal numbers such as "first" or "second" as used in this specification and claims can be used to distinguish elements. Such ordinal numbers are used to differentiate identical or similar elements from one another in context. The meaning of the terms may not be limited by the use of the ordinal numbers. For example, the order of use, arrangement, etc., of elements having such ordinal numbers may be interpreted without being limited by the number. Ordinal numbers may be interchanged as needed.

[0046] In the following description, exemplary embodiments of the present disclosure will be presented with reference to the accompanying drawings. However, the concept of the present disclosure is not limited to the exemplary embodiments presented. For example, those skilled in the art who understand the concept of the present disclosure may propose another exemplary embodiment that is included within the scope of the concept of the present disclosure by adding, changing, or removing elements. However, other exemplary embodiments are also included within the scope of the concept of the present disclosure. For clarity, the shape, size, etc., of the elements in the drawings may be enlarged.

[0047] Figure 1 An example is shown of a battery pack 10 including an exhaust device 50 according to the present disclosure. Figure 2 This is a cross-sectional view illustrating the frame 30 to which the exhaust device 50 according to this disclosure is mounted. Figure 3 This is a diagram illustrating the shape of the exhaust device 50 according to the present disclosure when gas emission is not performed. Figure 4 This is a diagram illustrating the shape of the exhaust device 50 according to the present disclosure when performing gas emission.

[0048] Reference Figures 1 to 4 According to this disclosure, the exhaust device 50 can be installed on the opening O of the frame 30 where the battery cell is installed.

[0049] The frame 30 may include an opening O having an approximately cylindrical shape for mounting an exhaust device 50. The internal space and external space of the frame 30 can communicate with each other through the opening O. The exhaust device 50 can be fitted into and mounted in the opening O. The exhaust device 50 can be configured to discharge gases generated in the battery cell.

[0050] The exhaust device 50 can be configured to tightly seal the interior space of the frame 30 when no gas is being discharged. The exhaust device 50 can also be configured to allow communication between the interior space and the exterior space of the frame 30 when gas is being discharged.

[0051] Figure 5 An exhaust device 50 according to the present disclosure is illustrated.

[0052] Reference Figure 5 The exhaust device 50 may include a fixed member 100, a movable member 300, and a blocking member 200.

[0053] The fixing member 100 can be installed into the opening O of the frame 30. The fixing member 100 can be assembled into the opening O of the frame 30 with dimensions approximately equal to those of the opening O. The fixing member 100 can have a hollow structure to allow gas to move into its interior.

[0054] The fixing member 100 may have an internally approximately hollow cylindrical shape. The outer diameter of the fixing member 100 may be substantially equal to the inner diameter of the opening O of the frame 30, or may be fitted into the opening O of the frame 30 without any gap between the fixing member 100 and the opening O of the frame 30.

[0055] The movable member 300 can open and close the opening O of the frame 30 by moving at least a portion of the movable member 300 within the fixed member 100. The movable member 300 can be pressed and moved by gas. The movable member 300 can move in the direction in which gas is discharged and in the opposite direction. The movable member 300 can close the opening O of the frame 30 when no gas is discharged. The movable member 300 can open the opening O of the frame 30 when gas is discharged.

[0056] The blocking member 200 can be disposed below the fixed member 100. The blocking member 200 can block at least one area of ​​the opening portion O of the frame 30. The blocking member 200 may include a blocking area that blocks one area of ​​the opening portion O of the frame 30, and an opening area other than the blocking area. Gas can be allowed to move within the opening area of ​​the blocking member 200, but flame movement can be prevented within the opening area of ​​the blocking member 200. The blocking member 200 may be positioned further inward than the moving member 300 in the direction of gas outflow. Gas passing through the opening area of ​​the blocking member 200 can press against and move the moving member 300.

[0057] The protrusion 310 can be provided to the movable member 300. The protrusion 310 can selectively penetrate the opening area of ​​the blocking member 200.

[0058] According to this configuration of the present disclosure, the exhaust device 50 can be prevented from being blocked. When gas is discharged through the opening area of ​​the blocking member 200, the protrusion 310 can prevent dust, residues, etc. that move with the gas from accumulating near the blocking member 200.

[0059] When gas is discharged, the protrusion 310 of the moving member 300 moves in the direction of gas discharge. When gas discharge ends, the protrusion 310 of the moving member 300, which has already moved, can move backward in the opposite direction to the gas discharge direction, and remove dust and residue accumulated near the blocking member 200. When gas discharge ends with the blocking member 200 unobstructed, the protrusion 310 can prevent the accumulation of dust and residue by removing dust from the blocking member 200. When gas discharge ends with the blocking member 200 blocked, the protrusion 310 can remove dust and residue accumulated in the blocking member 200. In other words, the protrusion 310 can prevent dust and residue from accumulating in the blocking member 200, and although the gas discharge path is blocked when dust and residue accumulate in the blocking member 200, the protrusion 310 can promote gas discharge by removing the dust and residue blocking the gas discharge path.

[0060] Figure 6 This is a diagram illustrating the fixing member 100 included in the exhaust device 50 according to the present disclosure.

[0061] Reference Figure 6 The fixing member 100 may include a constraint part 110.

[0062] The constraint portion 110 can be configured such that the movable member 300 is engaged thereon. The constraint portion 110 can be configured such that the movable member 300 does not separate from the opening portion O of the frame 30. The constraint portion 110 can be configured such that the movable member 300 separates from the opening portion O of the frame 30 due to excessive movement in the direction of gas discharge and in the opposite direction.

[0063] The restraint portion 110 can include the exhaust flow path V by opening at least one area of ​​the opening portion O of the frame 30. The restraint portion 110 can also include the exhaust flow path V by penetrating at least a portion of the remaining area other than the area where the moving member 300 is stuck.

[0064] According to this configuration of the present disclosure, the exhaust device 50 can be used continuously. This is because, due to the constraint part 110, the moving member 300 does not separate from the opening portion O of the frame 30 when the gas is being discharged and when the gas discharge ends.

[0065] Figure 7 This is a diagram illustrating the movable member 300 included in the exhaust device 50 according to the present disclosure.

[0066] Reference Figure 7 The movable member 300 may include a first cover portion 320, a second cover portion 330, and a connecting portion 340. The movable member 300 may include an elastic portion 350.

[0067] The first cover portion 320 can be positioned outside the restraint portion 110. The first cover portion 320 can cover the outside of the opening portion O. The first cover portion 320 can be positioned further outward than the restraint portion 110 in the direction of gas discharge. The first cover portion 320 can be configured to block all exhaust flow paths V provided to the restraint portion 110.

[0068] The second cover 330 can be positioned inside the restraint portion 110. The second cover 330 can cover the inside of the opening portion O. The second cover 330 can be positioned further inward than the restraint portion 110 in the direction of gas discharge.

[0069] The connecting portion 340 can connect the first cover portion 320 and the second cover portion 330. The connecting portion 340 can be connected to approximately the center of the first cover portion 320 and the center of the second cover portion 330. The connecting portion 340 can pass through the hole provided in the restraint portion 110.

[0070] It may be necessary for the protrusion 310 to move along the hole in the constraint portion 110 without interfering with the blocking area of ​​the blocking member 200. In other words, it may be desirable for the moving member 300 to be configured to reciprocate precisely without tilting. For this purpose, the outer diameter of the connecting portion 340 may be formed to be substantially equal to the inner diameter of the hole in the constraint portion 110, or there may be no gap between the connecting portion 340 and the hole in the constraint portion 110. In addition, the vertical length of the area where the outer peripheral surface of the connecting portion 340 and the inner peripheral surface of the hole in the constraint portion 110 contact each other may be formed to be sufficiently long. That is, the structure of the holes corresponding to the connecting portion 340 and the constraint portion 110 can be used to guide the precise movement of the moving member 300. In this way, the operational reliability of the exhaust device 50 can be ensured.

[0071] The elastic portion 350 can be disposed between the restraining portion 110 and the second cover portion 330. The elastic portion 350 can be pressed by high-pressure gas generated in the frame 30. The elastic portion 350 can be compressed by a pressing force within a predetermined range. The elastic portion 350 can be a spring. When the gas is discharged, the elastic portion 350 can be locked onto the restraining portion 110 and compressed in the direction of gas discharge. The elastic modulus of the elastic portion 350 can be greater than the elastic modulus of the elastic portion 350 when it is first compressed by the weight of the moving member 300. For example, when the exhaust device 50 is installed on the frame 30 such that the first cover portion 320 is positioned downwards, the elastic portion 350 can be configured such that the moving member 300 will not open the opening portion O of the frame 30 by gravity.

[0072] According to this configuration of the present disclosure, when the first cover 320 is mounted to the frame 30 in any direction, and when the first cover 320 is mounted to the frame 30 to be positioned above it, the venting device 50 can maintain the seal of the internal space of the frame when no gas is released. This is because when the elastic part 350 is provided, the venting device 50 will not open solely by the weight of the moving member 300.

[0073] Furthermore, when the elastic part 350 is decompressed after being compressed, the protrusion 310 can remove dust from the blocking part with a stronger force due to the elastic energy.

[0074] Figure 8 This is a diagram illustrating the blocking member 200 included in the exhaust device 50 according to the present disclosure.

[0075] Reference Figure 8 The blocking member 200 may include a mesh member M forming multiple openings. These openings may have dimensions that allow only gas movement but not flame movement. The blocking member may form fifteen to forty openings per square inch of area.

[0076] Figure 9This is a diagram illustrating the shape of the blocking member 200 and the protrusion 310 included in the exhaust device 50 according to the present disclosure when gas emission is not performed. Figure 10 This is a diagram illustrating the shape of the blocking member 200 and the protrusion 310 included in the exhaust device 50 according to the present disclosure when performing gas exhaust.

[0077] Reference Figure 9 and Figure 10 The protrusion 310 may include a plurality of pins P. The plurality of pins P may penetrate a plurality of openings in the mesh member M. The plurality of pins may be inserted into the inner surface of the second cover portion 330.

[0078] The length of the multiple pins P protruding from the multiple openings of the mesh member M can be shorter than the length of the elastic part 350.

[0079] When the gas is not being released, multiple pins P can penetrate multiple openings in the mesh member M. When the gas is released, the state of penetrating multiple openings in the mesh member M can be released.

[0080] When the elastic part 350 is not compressed, the multiple pins P can penetrate the multiple openings of the mesh member M. When the elastic part 350 is compressed, the state of penetrating the multiple openings of the mesh member M can be released.

[0081] When the elastic portion 350 is not compressed, the multiple openings may include a penetration area through which the multiple pins P penetrate and a non-penetration area other than the penetration area. Because the multiple pins P penetrate the openings, gas discharge may not be easily achieved in the penetration area. Therefore, gas discharge can begin through the non-penetration area. When gas discharge begins, gas can pass through the exhaust flow path V to press the first cover portion 320. In this way, the penetration state of the multiple pins P can be released, allowing gas to also be discharged through the penetration area. In other words, because both penetration and non-penetration areas are included, gas can be discharged through the non-penetration area even if a certain amount of gas is not generated sufficient to completely release the state of the multiple pins P penetrating the multiple openings.

[0082] According to this configuration of the present disclosure, gas venting can be made easier. If the moving member 300 is pressurized and moved by high-pressure gas, the state in which multiple pins P penetrate multiple openings will be released, thereby increasing the area over which the gas can be vented.

[0083] Figure 11 This is an exploded perspective view illustrating the exhaust device 50 according to the present disclosure.

[0084] Reference Figure 11 The exhaust device 50 according to this disclosure may include a sealing portion 400 and / or a connecting member 500.

[0085] A sealing portion 400 may be disposed between the first cover portion 320 and the restraining portion 110. The sealing portion 400 may include a rubber material. The sealing portion 400 may be an O-ring. A groove formed to receive the sealing portion 400 may be formed in connection with the first cover portion 320 and the restraining portion 110.

[0086] According to this configuration of the present disclosure, the sealing force of the exhaust device 50 can be improved when the gas does not escape.

[0087] The connecting member 500 can connect the exhaust device 50 and the frame 30. The connecting member 500 can have an approximately annular shape. The connecting member 500 can include an inner connecting portion and an outer connecting portion. The inner connecting portion can be formed along the inner periphery of the connecting member 500. The inner connecting portion can be connected to the blocking member 200. The inner connecting portion can be connected to the fixing member 100. The outer connecting portion can be formed along the outer periphery of the connecting member 500. The outer connecting portion can be connected to the frame 30.

[0088] According to this configuration of the present disclosure, the exhaust device 50 can be further securely fixed to the frame 30.

[0089] Return to reference Figure 1 The battery pack 10 according to this disclosure may include a venting device 50. Although not illustrated in the drawings, the battery pack 10 according to this disclosure may include various components of the battery pack 10, such as those already publicly known at the time of filing of this disclosure (e.g., battery management system (BMS), relays, current sensors, etc.), in addition to the battery cells and frame 30. The position or number of venting devices 50 may be adjusted according to the required venting performance of the battery pack 10 and the location where venting is required.

[0090] Figure 12 This is a diagram illustrating vehicle 1 according to this disclosure.

[0091] Reference Figure 12 The vehicle 1 according to this disclosure may include a battery pack 10 according to an exemplary embodiment of this disclosure. In addition to the battery pack 10, the vehicle 1 may also include various components included in the vehicle 1. For example, the vehicle 1 according to this disclosure may also include a body, a motor, control devices such as an electronic control unit (ECU), etc.

[0092] As described above, while the intended exemplary embodiments of this disclosure have been described primarily with reference to the accompanying drawings, it will be apparent to those skilled in the art that various modifications are permitted without departing from the scope of this disclosure. Therefore, the scope of this disclosure should be interpreted based on the described claims to include examples of such modifications.

[0093] [Description of reference numerals in the attached figures]

[0094] 1 vehicle

[0095] 10 battery pack

[0096] 30 frames

[0097] O-shaped opening

[0098] 50 exhaust system

[0099] 100 fixed components

[0100] 110 Restraint Section

[0101] V Exhaust Flow Path

[0102] 200 blocking components

[0103] M-mesh components

[0104] 300 moving components

[0105] 310 protrusion

[0106] P multiple sales

[0107] 320 First Cover

[0108] 330 Second Cover

[0109] 340 connecting part

[0110] 350 elastic part

[0111] 400 sealing part

[0112] 500 connecting components

Claims

1. A venting device for mounting to an opening in a frame to which a battery cell is mounted, the venting device comprising: A fixing member, said fixing member being installed to the opening portion of the frame; A movable member configured to open and close the opening portion of the frame by moving at least a portion of the movable member within the fixed member; A blocking member disposed on the fixing member and configured to block at least one area of ​​the opening portion of the frame; as well as A protrusion is disposed on the movable member and configured to penetrate the opening region of the blocking member.

2. The exhaust device according to claim 1, wherein, The blocking member is positioned further inward than the moving member in the direction in which the gas flows out through the exhaust device.

3. The exhaust device according to claim 1, wherein, The fixing member includes a constraint portion configured such that the moving member is locked in place so as not to separate from the opening portion of the frame.

4. The exhaust device according to claim 3, wherein, The constraint portion includes an exhaust flow path by opening at least one region of the opening portion of the frame.

5. The exhaust device according to claim 3, wherein, The movable component includes: A first cover portion, the first cover portion being located outside the constraint portion and configured to cover the outside of the opening portion; A second cover portion, positioned inside the restraint portion and configured to cover the inside of the opening portion; and A connecting portion, which is configured to connect the first cover portion and the second cover portion.

6. The exhaust device according to claim 5, wherein the exhaust device further comprises a sealing portion disposed between the first cover portion and the restraining portion.

7. The exhaust device according to claim 5, wherein, The movable member is disposed between the constraint portion and the second cover portion and includes an elastic portion configured to be pressed by high-pressure gas generated in the frame and compressed by a pressing force within a predetermined range.

8. The exhaust device according to claim 7, wherein, The blocking member includes a mesh member forming multiple openings.

9. The exhaust device according to claim 8, wherein, The protrusions are a plurality of pins inserted into the inner surface of the second cover to penetrate the plurality of openings of the mesh member.

10. The exhaust device according to claim 9, wherein, The plurality of pins are formed to have a length that releases the plurality of openings penetrating the mesh member when the elastic portion is compressed.

11. A battery pack comprising an exhaust device according to any one of claims 1 to 10.

12. A vehicle comprising the battery pack according to claim 11.

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