Battery pack

Abstract

A battery pack is disclosed. A battery pack according to an embodiment of the present invention comprises: a base plate; an outer side wall coupled to the upper surface of the base plate; a plurality of battery cells positioned on the base plate and forming an array; and a side structure positioned above the base plate, extending lengthwise along one side of the base plate, and separating the plurality of battery cells from the base plate.

Description

battery pack

[0001] The present invention relates to a battery pack.

[0002] This application claims priority to Korean Patent Application No. 10-2023-0120715, filed on September 11, 2023, the entire disclosure of which is incorporated herein by reference.

[0003] As demand for portable electronic products such as laptops, video cameras, and mobile phones rapidly increases and the commercialization of robots and electric vehicles becomes more widespread, research into high-performance secondary batteries capable of repeated charging and discharging is actively underway.

[0004] Currently commercialized secondary batteries include nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries. Among these, lithium secondary batteries are receiving attention for their advantages of being able to charge and discharge freely, having a very low self-discharge rate, and having a high energy density, as they have almost no memory effect compared to nickel-based secondary batteries.

[0005] These lithium secondary batteries primarily use lithium oxide and carbon materials as the positive and negative electrode active materials, respectively. Lithium secondary batteries comprise an electrode assembly comprising positive and negative plates coated with the positive and negative electrode active materials, respectively, with a separator interposed between them, and an outer case, i.e., a battery case, that seals and encloses the electrode assembly together with an electrolyte.

[0006] In general, lithium secondary batteries can be classified into can-type secondary batteries in which the electrode assembly is built into a metal can and pouch-type secondary batteries in which the electrode assembly is built into a pouch of an aluminum laminate sheet, depending on the shape of the outer packaging material.

[0007] Recently, secondary batteries have been widely used for power and energy storage, not only in small devices like portable electronic devices but also in medium- to large-sized devices like electric vehicles and energy storage systems (ESS). Multiple secondary batteries can be electrically connected and housed within a module case to form a single battery module. Furthermore, multiple such battery modules can be connected to form a single battery pack.

[0008] However, when multiple secondary batteries (battery cells) or battery modules are densely packed in a confined space, they can be vulnerable to thermal events. Specifically, if a thermal runaway event occurs in a single battery cell, high-temperature gases, flames, and heat can be generated. If these gases, flames, or heat are transferred to other battery cells within the same battery module, an explosive chain reaction, such as thermal propagation, can occur. This chain reaction can not only cause a fire or explosion in the battery module in question, but can also trigger fires or explosions in other battery modules.

[0009] Moreover, for medium- to large-sized battery packs, such as those used in electric vehicles, the risk of a thermal chain reaction can be even greater due to the inclusion of a large number of battery cells and battery modules to increase output and / or capacity. Furthermore, battery packs installed in electric vehicles may be surrounded by users, such as drivers. Therefore, if a thermal event occurring in a specific battery module is not properly controlled and a chain reaction occurs, it could result in significant property damage and even human casualties.

[0010] The present invention aims to solve the above-mentioned problems and other problems.

[0011] Another object of the present invention may be to provide a battery pack with easy venting control.

[0012] Another object of the present invention may be to provide a battery pack with improved assembly properties.

[0013] Another object of the present invention may be to provide a battery pack having improved energy density.

[0014] In order to achieve the above object, a battery pack according to one embodiment of the present invention may include a base plate; an outer side wall coupled to an upper surface of the base plate; a plurality of battery cells positioned on the base plate and forming an array; and a side structure positioned on the base plate and extending along one side of the base plate, the side structure separating the plurality of battery cells and the base plate.

[0015] Additionally, the side structure may include a body that is elongated and covers the side surfaces of the plurality of battery cells.

[0016] Additionally, the body may include a curved portion formed along a side of the battery cell.

[0017] In addition, the side structure further includes: a plurality of bottom ribs protruding from the body; and a plurality of top ribs protruding from the body and positioned above the plurality of bottom ribs, and the plurality of battery cells can be mounted between the plurality of bottom ribs and the plurality of top ribs.

[0018] Additionally, the side structure may further include a compartment protruding from the body and positioned between adjacent battery cells among the plurality of battery cells.

[0019] Additionally, the side structure may include: a head formed at one end of the body and covering the plurality of battery cells; and a venting hole formed in the head and communicating with a gap between the plurality of battery cells and the base plate.

[0020] Additionally, the venting hole can be opened downwards.

[0021] Additionally, the height of the venting hole may be configured to be lower than the height of the bottom rib.

[0022] In addition, the base plate may further include a guide pipe installed on the upper surface thereof, positioned between the head and the outer side wall, and having an inlet hole facing the venting hole.

[0023] Additionally, the head may further include a slot positioned above the venting hole, and the battery pack may further include a cooling unit installed in the slot.

[0024] Additionally, the battery pack may further include a venting device installed on the outer side wall.

[0025] A vehicle according to one aspect of the present invention comprises a battery pack of the present invention.

[0026] According to at least one of the embodiments of the present invention, venting control of a battery pack can be facilitated.

[0027] According to at least one of the embodiments of the present invention, the thermal safety of a battery pack can be improved.

[0028] According to at least one of the embodiments of the present invention, the rigidity of the battery pack can be improved.

[0029] According to at least one of the embodiments of the present invention, the energy density of a battery pack can be improved.

[0030] The following drawings attached to this specification illustrate preferred embodiments of the present invention, and together with the detailed description of the invention described below, serve to further understand the technical idea of ​​the present invention, and therefore, the present invention should not be interpreted as being limited to matters described in such drawings.

[0031] FIG. 1 is a perspective view showing a battery pack according to one embodiment of the present invention.

[0032] FIG. 2 is a diagram illustrating a partial configuration of a battery pack according to an embodiment of the present invention.

[0033] FIG. 3 is a perspective view showing a side structure of a battery pack according to one embodiment of the present invention.

[0034] FIG. 4 is a perspective view showing a side structure and a battery cell of a battery pack according to one embodiment of the present invention.

[0035] Fig. 5 is a drawing showing a part of a cross-sectional configuration along the cutting line A-A' of Fig. 4.

[0036] Fig. 6 is a drawing showing a part of the cross-sectional configuration along the cutting line B-B' of Fig. 4.

[0037] FIG. 7 is a drawing of a side structure and a battery cell of a battery pack according to an embodiment of the present invention, viewed from below.

[0038] FIG. 8 is a diagram illustrating a partial configuration of a cell array structure of a battery pack according to an embodiment of the present invention.

[0039] FIG. 9 is a drawing showing a cell array structure of a battery pack according to one embodiment of the present invention.

[0040] FIG. 10 is a drawing of a cell array structure of a battery pack according to an embodiment of the present invention viewed from below.

[0041] Figure 11 is an enlarged view of part C of Figure 10.

[0042] Figure 12 is an enlarged view of part D of Figure 10.

[0043] FIG. 13 is a drawing showing a guide pipe of a battery pack according to one embodiment of the present invention.

[0044] FIG. 14 is a drawing showing a cell array structure and a guide pipe of a battery pack according to one embodiment of the present invention.

[0045] FIG. 15 is a drawing showing the connection of a cell array structure and a guide pipe of a battery pack according to one embodiment of the present invention.

[0046] Fig. 16 is a perspective view showing a part of a configuration of a battery pack according to one embodiment of the present invention.

[0047] Fig. 17 is a drawing showing a part of a cross-sectional configuration along the cutting line E-E' of Fig. 16.

[0048] Figure 18 is an enlarged view of part F of Figure 17.

[0049] Figure 19 is an enlarged view of part G of Figure 17.

[0050] Fig. 20 is a drawing showing a part of a cross-sectional configuration along the cutting line H-H' of Fig. 16.

[0051] Figure 21 is an enlarged view of part I of Figure 20.

[0052] Figure 22 is an enlarged view of part J of Figure 20.

[0053] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0054] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0055] FIG. 1 is a perspective view showing a battery pack according to an embodiment of the present invention. FIG. 2 is a diagram showing a partial configuration of a battery pack according to an embodiment of the present invention in isolation. Referring to FIGS. 1 and 2, a battery pack according to an embodiment of the present invention may include a base plate (100), and referring to FIGS. 1 and 2, a battery pack according to an embodiment of the present invention may include a base plate (100), an outer side wall (200), a plurality of battery cells (310), and a side structure (320).

[0056] The base plate (100) may have a flat shape. The base plate (100) may have a roughly rectangular shape.

[0057] The outer side wall (200) can be fastened, joined, fixed or attached to the upper surface of the base plate (100). The outer side wall (200) and the base plate (100) can form an internal space.

[0058] A plurality of battery cells (310) may be accommodated in the internal space. The plurality of battery cells (310) may be arranged to form an array. The plurality of battery cells (310) may be positioned on the base plate (100). In this case, the battery cells (310) may refer to secondary batteries. In addition, the battery cells (310) may be secondary batteries having a cylindrical shape.

[0059] The side structure (320) may be positioned on top of the base plate (100). The side structure (320) may extend along one side of the base plate (100). The side structure (320) may separate the plurality of battery cells (310) from the base plate (100). Alternatively, the side structure (320) may form a space between the plurality of battery cells (310) and the base plate (100).

[0060] According to this configuration of the present invention, venting control of the battery pack can be facilitated. When a thermal event occurs in the battery cell (310), venting gas or flammable particles can be discharged in a downward direction or in the -Z-axis direction. The venting gas or flammable particles can flow through the space between the battery cell (310) and the base plate (100) and be discharged to the outside of the battery pack.

[0061] Referring to FIGS. 1 and 2, a battery pack according to an embodiment of the present invention may include a busbar assembly (400) and a pack cover (500). The pack cover (500) may cover an internal space of the battery pack. The pack cover (500) may have a plate shape. The pack cover (500) may have a shape similar to that of the base plate (100). The pack cover (500) may be fastened, coupled, fixed, or attached to the outer side wall (200).

[0062] The busbar assembly (400) may be positioned between a plurality of battery cells (310) and a pack cover (500). The busbar assembly (400) may be physically connected to the upper side of the plurality of battery cells (310). In addition, the busbar assembly (400) may be electrically connected to the plurality of battery cells (310).

[0063] A venting device (600) may be provided on the outer surface of the outer side wall (200). When the pressure inside the battery pack increases, the venting device (600) may expel gas.

[0064] Fig. 3 is a perspective view showing a side structure (320) of a battery pack according to an embodiment of the present invention. Fig. 4 is a perspective view showing a side structure (320) and a battery cell (310) of a battery pack according to an embodiment of the present invention. Fig. 5 is a drawing showing a part of a cross-sectional configuration taken along the cutting line A-A' of Fig. 4. Fig. 6 is a drawing showing a part of a cross-sectional configuration taken along the cutting line B-B' of Fig. 4. Fig. 7 is a drawing showing a side structure (320) and a battery cell (310) of a battery pack according to an embodiment of the present invention when viewed from below.

[0065] Referring to FIGS. 3 to 7, a side structure (320) of a battery pack according to an embodiment of the present invention may include a body (321) that is elongated and covers side surfaces of a plurality of battery cells (310). The body (321) may be elongated along the X-axis direction. The body (321) may support and accommodate an array formed by the battery cells (310). Alternatively, the body (321) may align a plurality of battery cells (310) so that the battery cells (310) form an array. The body (321) may support and accommodate battery cells (310) on the left and right sides, respectively.

[0066] According to this configuration of the present invention, alignment of multiple battery cells (310) can be facilitated. This can improve the energy density of the battery pack. Furthermore, the rigidity of the battery pack can be improved.

[0067] Referring to FIGS. 3 to 7, a body (321) of a side structure (320) of a battery pack according to an embodiment of the present invention may include a curved portion (326) formed along a side surface of a battery cell (310). The body (321) may include a curved portion (326) formed on the inside. The curved portion (326) may be bent along the side surface of the battery cell (310). The curved portion (326) may support the side surface of the battery cell (310). A plurality of curved portions (326) may be provided. The curved portions (326) may be provided to correspond one-to-one with the battery cell (310). The curved portions (326) may be provided on the left and right sides of the body (321), respectively.

[0068] According to this configuration of the present invention, a plurality of battery cells (310) can be stably fixed and supported by the side structure (320). As a result, the rigidity of the battery pack can be improved.

[0069] Referring to FIGS. 3 to 7, a side structure (320) of a battery pack according to an embodiment of the present invention may include a plurality of bottom ribs (323) protruding from a body (321) and a plurality of top ribs (324) protruding from the body (321) and positioned above the plurality of bottom ribs (323). In addition, a plurality of battery cells (310) may be mounted between the plurality of bottom ribs (323) and the plurality of top ribs (324). The side structure (320) may include bottom ribs (323) protruding to the left and right, respectively. In addition, the side structure (320) may include top ribs (324) protruding to the left and right, respectively. The top ribs (324) may be positioned above the bottom ribs (323). The top rib (324) and the bottom rib (323) may be provided in a one-to-one correspondence. A plurality of battery cells (310) may be fixed between the bottom rib (323) and the top rib (324). The plurality of battery cells (310) may be spaced apart from the base plate (100) by the height of the bottom rib (323).

[0070] According to this configuration of the present invention, a plurality of battery cells (310) can be stably fixed and supported by the side structure (320). In addition, a venting space can be formed at the bottom of the battery cells (310).

[0071] Referring to FIGS. 3 to 7, a side structure (320) of a battery pack according to an embodiment of the present invention may further include a partition (325) protruding from a body (321) and positioned between adjacent battery cells (310) among a plurality of battery cells (310). A plurality of partitions (325) may be provided. The partitions (325) may protrude to the left and right sides of the body (321) of the side structure (320), respectively.

[0072] According to this configuration of the present invention, a plurality of battery cells (310) can be separated from neighboring battery cells (310) by a partition (325). As a result, thermal safety can be improved.

[0073] Referring to FIGS. 3 to 7, a side structure (320) of a battery pack according to an embodiment of the present invention may include a head (322) and a venting hole (328). The head (322) may be formed at both ends of the body (321). The head (322) may be provided at the front and rear sides of the body (321), respectively. The head (322) may cover a plurality of battery cells (310).

[0074] A venting hole (328) may be formed in the head (322). The venting hole (328) may be formed in the front side head (322) and the rear side head (322), respectively. The venting hole (328) may be in communication with a gap between a plurality of battery cells (310) and the base plate (100).

[0075] According to this configuration of the present invention, venting control of the battery pack can be facilitated. When a thermal event occurs in the battery cell (310), venting gas or flammable particles, etc. can be discharged in a downward direction or in the -Z-axis direction. The venting gas or flammable particles, etc. can flow through the space between the battery cell (310) and the base plate (100) and be discharged to the outside of the battery pack through the venting hole (328).

[0076] Referring to FIGS. 3 to 7, the venting hole (328) of the side structure (320) of the battery pack according to one embodiment of the present invention may be opened downward. Additionally, the venting hole (328) may be shaped to be open to the right.

[0077] According to this configuration of the present invention, venting control of the battery pack can be facilitated. By opening the venting hole (328) downward, the resistance to the flow of venting gas or flammable particles discharged from the battery cell (310) can be reduced. This can enhance the thermal safety of the battery pack.

[0078] FIG. 8 is a diagram illustrating a partial configuration of a cell array structure (300) of a battery pack according to an embodiment of the present invention in isolation. FIG. 9 is a diagram illustrating a cell array structure (300) of a battery pack according to an embodiment of the present invention. FIG. 10 is a diagram illustrating a cell array structure (300) of a battery pack according to an embodiment of the present invention as viewed from below to above. FIG. 11 is an enlarged view of portion C of FIG. 10. Referring to FIGS. 8 to 11, a battery pack according to an embodiment of the present invention may include a cell array structure (300). The cell array structure (300) may include a pair of inner side walls (330), a plurality of side structures (320), a plurality of cooling units (340), and a plurality of battery cells (310).

[0079] At least some of the plurality of battery cells (310) may be mounted, coupled, or fixed to the inner side wall (330). The inner side wall (330) may include wall heads at both ends in the X-axis direction. The wall heads may have slots. In addition, the head (322) of the side structure (320) may have slots (327). The slots (327) may pass through the head (322). And, the slots (327) may be located above the venting holes (328).

[0080] The inner side wall (330) can be fastened, joined, fixed or attached to the upper surface of the base plate (100). The inner side wall (330) can be positioned between a plurality of battery cells (310) and the outer side wall (200).

[0081] The side structure (320) can be extended along the X-axis direction. The side structure (320) can fix and support a plurality of battery cells (310). A plurality of side structures (320) can be provided.

[0082] The cooling unit (340) may be extended along the X-axis direction. The cooling unit (340) may be in contact with a plurality of battery cells (310). The cooling unit (340) may be provided in multiple numbers. The cooling unit (340) may be inserted, coupled, mounted, or fixed in the slot (327). A cooling liquid or cooling gas may flow through the cooling unit (340).

[0083] The side structure (320) and the plurality of battery cells (310) and cooling units (340) may be arranged alternately. A pair of inner side walls (330) may be arranged at the outermost edge of the cell array structure (300).

[0084] The cell array structure (300) can be filled with a resin. The resin can bond, fix, or attach components of the cell array structure (300). In addition, the resin can improve the rigidity of the cell array structure (300).

[0085] According to this configuration of the present invention, the cooling efficiency of the battery pack can be improved. The cooling unit (340) can be in contact with all battery cells (310). This can improve the thermal safety of the battery pack.

[0086] Fig. 12 is an enlarged view of part D of Fig. 10. Referring to Figs. 10 to 12, the venting gas (g) discharged from the battery cell (310) of the battery pack according to one embodiment of the present invention can flow in the +X-axis direction and the -X-axis direction through the space between the battery cell (310) and the base plate (100). In addition, the venting gas can flow in the +X-axis direction and the -X-axis direction through the venting hole (328).

[0087] FIG. 13 is a drawing showing a guide pipe (700) of a battery pack according to an embodiment of the present invention. FIG. 14 is a drawing showing a cell array structure (300) and a guide pipe (700) of a battery pack according to an embodiment of the present invention. FIG. 15 is a drawing showing the connection between a cell array structure (300) and a guide pipe (700) of a battery pack according to an embodiment of the present invention. FIG. 16 is a perspective view showing a part of a configuration of a battery pack according to an embodiment of the present invention. FIG. 17 is a drawing showing a part of a cross-sectional configuration taken along the line E-E' of FIG. 16. FIG. 18 is an enlarged view of part F of FIG. 17.

[0088] Referring to FIGS. 13 to 18, a battery pack according to an embodiment of the present invention may include a guide pipe (700).

[0089] The guide pipe (700) may be extended along the Y-axis direction. The guide pipe (700) may be installed on the upper surface of the base plate (100). The guide pipe (700) may be located between the head (322) and the outer side wall (200).

[0090] The guide pipe (700) may have an inlet hole (701) formed in the -X-axis direction. The inlet hole (701) may face the venting hole (328). In addition, the guide pipe (700) may be open in the +Y-axis direction and the -Y-axis direction.

[0091] The guide pipe (700) may be located below the cooling unit (340). The guide pipe (700) may be located between the base plate (100) and the cooling unit (340).

[0092] The venting gas (g) discharged in the +X-axis direction through the venting hole (328) can be introduced into the guide pipe (700) through the inlet hole (701). The venting gas (g) introduced into the guide pipe (700) can flow in the +Y-axis direction and the -Y-axis direction along the flow path (702) formed inside the guide pipe (700).

[0093] According to this configuration of the present invention, venting control of the battery pack can be facilitated. Venting gas or flammable particles can flow through the space between the battery cell (310) and the base plate (100) and be discharged to the outside of the battery pack through the venting hole (328) and the guide pipe (700).

[0094] Referring to FIG. 18, a battery pack according to an embodiment of the present invention may further include a venting device (600) installed on an outer side wall (200). The venting device (600) may be installed on a side of the battery pack. A plurality of venting devices (600) may be provided. In addition, the venting devices (600) may be provided in the +Y-axis direction and the -Y-axis direction of the battery pack. The venting devices (600) may connect the inside and the outside of the battery pack when the pressure inside the battery pack increases. The venting gas (g) discharged from the guide pipe (700) may flow along the outer side wall (200). In addition, the venting gas (g) may be discharged to the outside of the battery pack through the venting devices (600).

[0095] According to this configuration of the present invention, venting control of the battery pack can be facilitated. Venting gases or flammable particles can be discharged to the outside of the battery pack through the venting device (600).

[0096] Fig. 19 is an enlarged view of part G of Fig. 17. Referring to Fig. 19, a venting device (600) may be installed on the rear side of the battery pack. A plurality of venting devices (600) may be provided. In addition, the venting devices (600) may be provided in the +X-axis direction and the -X-axis direction of the battery pack. The venting device (600) may connect the inside and the outside of the battery pack when the pressure inside the battery pack increases. The venting gas (g) that flows out in the -X-axis direction or rearward through the venting hole (328) may flow along the outer side wall (200). In addition, the venting gas (g) may be discharged to the outside of the battery pack through the venting device (600).

[0097] According to this configuration of the present invention, venting control of the battery pack can be facilitated. Venting gases or flammable particles can be discharged to the outside of the battery pack through the venting device (600).

[0098] FIG. 20 is a drawing showing a part of a cross-sectional configuration taken along the cutting line H-H' of FIG. 16. FIG. 21 is an enlarged view of part I of FIG. 20. FIG. 22 is an enlarged view of part J of FIG. 20. Referring to FIGS. 20 to 22, the height of the venting hole (328) of the battery pack according to an embodiment of the present invention may be configured to be lower than the height of the bottom rib (323). Since the venting hole (328) is formed lower than the height of the bottom rib (323), the head (322) can cover up to the lower end of the side of the battery cell (310). As a result, the battery cell (310) may not be exposed through the venting hole (328).

[0099] According to this configuration of the present invention, the side structure (320) can prevent or block flames generated from the battery cell (310) from being exposed to the outside. As a result, the thermal safety of the battery pack can be improved.

[0100] A vehicle according to the present invention may include the battery pack described above. The battery pack according to the present invention may be applied to vehicles such as electric vehicles or hybrid vehicles. Furthermore, the vehicle according to the present invention may further include various other components, in addition to the battery pack. For example, the vehicle according to the present invention may further include a body, a motor, a control device such as an electronic control unit (ECU), and the like.

[0101] Meanwhile, in this specification, terms indicating directions such as up, down, left, right, front, back, inner, and outer are used, but these terms are only for convenience of explanation, and it is obvious to those skilled in the art that these terms may vary depending on the location of the target object or the location of the observer.

[0102] As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited thereto, and various modifications and variations are possible by a person having ordinary skill in the art to which the present invention pertains within the scope of the technical idea of ​​the present invention and the equivalent scope of the patent claims to be described below.

Claims

1. Base plate; An outer side wall coupled to the upper surface of the base plate; A plurality of battery cells positioned on the base plate and forming an array; and A battery pack comprising a side structure positioned above the base plate, extending along one side of the base plate, and separating the plurality of battery cells from the base plate.

2. In paragraph 1, The above side structure is, A battery pack comprising a body that is elongated and covers the sides of the plurality of battery cells.

3. In paragraph 2, The above body, A battery pack comprising a curved portion formed along a side of the battery cell.

4. In paragraph 2, The above side structure is: A plurality of bottom ribs protruding from the above body; and, Further comprising a plurality of top ribs protruding from the body and positioned above the plurality of bottom ribs, The above plurality of battery cells, A battery pack mounted between the plurality of bottom ribs and the plurality of top ribs.

5. In paragraph 4, The above side structure is, A battery pack further comprising a compartment protruding from the body and positioned between adjacent battery cells among the plurality of battery cells.

6. In paragraph 4, The above side structure is: A head formed at one end of the body and covering the plurality of battery cells; and A battery pack comprising a venting hole formed in the head and communicating with a gap between the plurality of battery cells and the base plate.

7. In paragraph 6, The above venting hole is, Battery pack that opens downwards.

8. In paragraph 6, The height of the above venting hole is, A battery pack configured to be lower than the height of the above bottom rib.

9. In paragraph 6, A battery pack further comprising a guide pipe installed on the upper surface of the base plate, positioned between the head and the outer side wall, and having an inlet hole facing the venting hole.

10. In paragraph 6, The above head, Further comprising a slot positioned above the venting hole, The above battery pack, A battery pack further comprising a cooling unit installed in the above slot.

11. In paragraph 1, A battery pack further comprising a venting device installed on the outer side wall.

12. A vehicle comprising a battery pack according to any one of claims 1 to 11.

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