Battery pack and vehicle including same

Abstract

A battery pack according to the present invention comprises: at least one battery assembly having a plurality of battery cells, and a venting hole in a first direction; a pack case having an accommodation space in which the battery assembly is accommodated; and a cooling venting member which is arranged in the first direction of the battery assembly, and which includes a venting part in which venting gas discharged from the venting hole flows and a cooling part for cooling the battery assembly.

Description

Battery pack and vehicle including same

[0001] The present invention relates to a battery pack and a vehicle including the same.

[0002] This application claims priority to Korean Patent Application No. 10-2024-0116139, filed on August 28, 2024, the entire disclosure of which is incorporated herein by reference.

[0003] Secondary batteries, with their high applicability across product categories and electrical properties such as high energy density, are widely used not only in portable devices but also in electric vehicles (EVs) and hybrid electric vehicles (HEVs) powered by electrical power sources. These batteries are attracting attention as a new energy source for environmental friendliness and energy efficiency, not only because they can dramatically reduce fossil fuel use, but also because they produce no byproducts from energy use.

[0004] Commonly used secondary batteries today include lithium-ion batteries, lithium polymer batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and nickel-zinc batteries. When high output voltage is required, multiple battery cells are connected in series to form a battery module or battery pack. Furthermore, to increase charge / discharge capacity, multiple battery cells are connected in parallel to form a battery module or pack. Therefore, the number of battery cells included in a battery module or pack can vary depending on the required output voltage or charge / discharge capacity.

[0005] When configuring a battery pack by connecting multiple battery cells in series / parallel, it is common to first configure a battery module including at least one battery cell, and then configure a battery pack or battery rack by adding other components using this at least one battery module.

[0006] The present invention provides a battery pack capable of effective venting and cooling and a vehicle including the same.

[0007] In addition, the present invention provides a battery pack having improved energy density and a vehicle including the same.

[0008] In addition, the present invention provides a battery pack with improved productivity and a vehicle including the same.

[0009] In addition, the present invention provides a battery pack and a vehicle including the same in which a heat transfer phenomenon can be effectively suppressed or prevented.

[0010] Additionally, the present invention provides a battery pack and a vehicle including the same, which can effectively suppress or prevent venting gases from being introduced to a driver, other battery cells, or other battery assemblies.

[0011] In addition, the present invention provides a battery pack and a vehicle including the same, which can effectively block a cooling medium or venting gas from flowing into another location.

[0012] The technical problems to be solved by the present invention are not limited to the problems described above, and other problems not mentioned will be clearly understood by those skilled in the art from the description of the invention described below.

[0013] A battery pack according to the present invention comprises: at least one battery assembly having a plurality of battery cells and a venting hole on a first direction side; a pack case having a receiving space for accommodating the battery assembly; and a cooling venting member disposed on the first direction side of the battery assembly and having a venting portion through which venting gas discharged from the venting hole flows, and a cooling portion for cooling the battery assembly.

[0014] The above first direction may be a downward direction.

[0015] The above venting part and the above cooling part may be provided together in a single layer.

[0016] The above venting member and the cooling member may be alternately arranged in an area of ​​the cooling venting member corresponding to the battery assembly.

[0017] The above cooling venting member may further include a first partition wall portion that divides the venting portion and the cooling portion.

[0018] The above first bulkhead portion can protrude toward the first direction.

[0019] The above venting part and the cooling part can be manufactured as one piece.

[0020] The above venting hole may include a first venting hole positioned approximately at the center of the battery assembly; and a second venting hole positioned further outside the first venting hole in the battery assembly.

[0021] The above venting portion may include a first venting portion communicating with the first venting hole; a second venting portion communicating with the second venting hole; and a third venting portion communicating with the first venting portion and the second venting portion.

[0022] The cooling unit may be arranged between the first venting unit and the second venting unit.

[0023] The above cooling venting member is configured to change the flow direction of the cooling medium, and may further include a second partition wall provided inside the cooling section.

[0024] The above cooling venting member is configured to increase the flow distance of the venting gas, and may further include a third partition wall provided inside the venting member.

[0025] The above pack case may have a bottom plate arranged on the first direction side of the cooling vent member.

[0026] The battery pack according to the present invention may further include a refractory sheet disposed between the battery assembly and the cooling venting member.

[0027] The battery pack according to the present invention further includes at least one electrical component, and the electrical component can be arranged on the second direction side of the battery assembly.

[0028] The battery pack according to the present invention may further include a venting device configured to connect the venting portion and the outside.

[0029] A vehicle according to the present invention comprises at least one battery pack according to the present invention.

[0030] According to the present invention, a battery pack capable of effective venting and cooling and a vehicle including the same can be provided.

[0031] Additionally, according to one aspect of the present invention, a battery pack with improved energy density and a vehicle including the same can be provided.

[0032] In addition, according to one aspect of the present invention, a battery pack with improved productivity and a vehicle including the same can be provided.

[0033] In addition, according to one aspect of the present invention, a battery pack and a vehicle including the same can be provided in which a heat transfer phenomenon can be effectively suppressed or prevented.

[0034] Additionally, according to one aspect of the present invention, a battery pack and a vehicle including the same can be provided that can effectively suppress or prevent venting gas from being introduced to a driver, other battery cells, or other battery assemblies.

[0035] In addition, according to one aspect of the present invention, a battery pack and a vehicle including the same can be provided in which a cooling medium or venting gas can be effectively blocked from flowing into another location.

[0036] The effects of the present invention are not limited to the effects described above, and effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the present invention pertains from this specification and the attached drawings.

[0037] The following drawings attached to this specification illustrate 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.

[0038] FIG. 1 is a perspective view showing the overall appearance of a battery pack according to one embodiment of the present invention.

[0039] FIG. 2 is a perspective view showing an exploded view of a cooling venting member in a battery pack according to one embodiment of the present invention.

[0040] FIG. 3 is a bottom view showing a cooling vent member separated from a battery pack according to one embodiment of the present invention.

[0041] Figure 4 is a bottom view showing a cooling venting member according to one embodiment of the present invention.

[0042] Figure 5 is a bottom view showing the flow of venting gas in the venting section of the cooling venting member according to one embodiment of the present invention.

[0043] Figure 6 is a bottom view showing the flow of cooling medium in the cooling section of the cooling venting member according to one embodiment of the present invention.

[0044] Figure 7 is a perspective view showing the overall appearance of a battery assembly according to one embodiment of the present invention.

[0045] FIG. 8 is a perspective view showing a battery assembly according to one embodiment of the present invention viewed from another direction.

[0046] Figure 9 is a perspective view showing the overall appearance of a battery cell according to one embodiment of the present invention.

[0047] FIG. 10 is a bottom view showing an enlarged portion of a cooling section of a cooling venting member according to one embodiment of the present invention and indicating the flow of a cooling medium.

[0048] FIG. 11 is a bottom view showing an enlarged portion of a venting portion of a cooling venting member according to one embodiment of the present invention and indicating the flow of venting gas.

[0049] Fig. 12 is a bottom view showing a cooling venting member according to a modified example of one embodiment of the present invention.

[0050] Figure 13 is an exploded perspective view of a battery pack according to another embodiment of the present invention.

[0051] FIG. 14 is a side cross-sectional view showing a portion of a battery pack according to another embodiment of the present invention in which a venting portion and a cooling portion are indicated.

[0052] Figure 15 is a perspective view showing an enlarged area B of Figure 12 and an exploded view of the sealing member.

[0053] Figure 16 is a perspective view showing an enlarged area B of Figure 12 and a bottom plate being bolted to a cooling vent member.

[0054] Figure 17 is an exploded perspective view of a battery pack according to another embodiment of the present invention.

[0055] FIG. 18 is a cross-sectional side view showing the flow of venting gas when a thermal event occurs in a battery pack according to another embodiment of the present invention.

[0056] FIG. 19 is a perspective view showing a battery pack according to one embodiment of the present invention with the pack cover removed.

[0057] Fig. 20 is a cross-sectional perspective view showing a side channel in a battery pack according to one embodiment of the present invention.

[0058] Fig. 21 is a perspective view showing the battery pack illustrated in Fig. 1 viewed from another direction.

[0059] Fig. 22 is a drawing showing a vehicle according to one embodiment of the present invention.

[0060] In some of the accompanying drawings, corresponding components are designated by the same reference numerals. Those skilled in the art will appreciate that the drawings illustrate elements simply and clearly and are not necessarily drawn to scale. For example, to facilitate understanding of various embodiments, the dimensions of some elements depicted in the drawings may be exaggerated relative to other elements. Furthermore, elements of known technology that are useful or essential in commercially feasible embodiments may often not be depicted so as not to obscure the spirit of various embodiments of the present invention.

[0061] Hereinafter, 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 concept of a term to best explain his or her invention, they should be interpreted in a way that conforms to the technical spirit of the present invention.

[0062] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are only some 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 this application.

[0063] When a battery pack contains multiple battery cells, the pack can be vulnerable to thermal chain reactions between cells or battery modules. For example, if a thermal event, such as thermal runaway, occurs in a single battery cell, this thermal event can propagate to other battery cells or battery modules. If this thermal runaway propagation is not properly controlled, a thermal event originating in a specific battery cell can trigger a chain reaction in other battery cells or battery modules, potentially resulting in a major problem such as an explosion or fire.

[0064] To this end, the battery pack includes a venting means for smoothly discharging high-temperature venting gases emitted from the battery cells or battery modules, and a cooling means for cooling the battery cells or battery modules. Meanwhile, conventional battery packs mainly have venting means, such as a venting section for venting, and cooling means, such as a cooling section for cooling, arranged on different sides of the battery pack. Since these conventional battery packs required separate spaces for the venting means and the cooling means, the space in which the battery cells or battery assemblies could be accommodated in the battery pack was limited. As a result, it was difficult to increase the energy density of the battery pack. In addition, since the venting means and the cooling means had to be provided as separate components, the overall cost of the battery pack was also high. Furthermore, since the venting means and the cooling means were arranged on different sides, it was difficult for the venting gas flowing in the venting means to be effectively cooled during the flow process, making it vulnerable to heat transfer.

[0065] Considering these factors, the present invention provides a battery pack capable of effective venting and cooling, and a vehicle including the same. For example, the present invention provides a battery pack capable of effectively suppressing or preventing venting gases from being introduced to a driver, other battery cells, or other battery assemblies, and a vehicle including the same.

[0066] FIG. 1 is a perspective view showing the overall appearance of a battery pack according to one embodiment of the present invention, FIG. 2 is a perspective view showing a cooling venting member in an exploded state in a battery pack according to one embodiment of the present invention, FIG. 3 is a bottom view showing a cooling venting member in an exploded state in a battery pack according to one embodiment of the present invention, and FIG. 4 is a bottom view showing a cooling venting member according to one embodiment of the present invention.

[0067] Hereinafter, a battery pack (10) according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4. A battery pack (10) according to an embodiment of the present invention may include a battery assembly (100), a pack case (200), and a cooling venting member (300).

[0068] The battery assembly (100) may be provided with a plurality of battery cells (110). For example, as illustrated in FIG. 3, a vent hole (VH) may be provided on the first direction (D1) side of the battery assembly (100). Here, the first direction (D1) may be, for example, the -Z direction. The battery assembly (100) may be provided with at least one battery cell. Alternatively, the battery assembly (100) may be provided with a plurality of battery cells.

[0069] The battery assembly (100) may have a predetermined width, length, and height. For example, the battery assembly (100) may have a predetermined width, length, and height in the X-axis, Y-axis, and Z-axis directions. Alternatively, the battery assembly (100) may have a predetermined width, length, and height in the Y-axis, X-axis, and Z-axis directions.

[0070] A venting hole (VH) may be a hole through which venting gas (VG) is discharged. When a thermal event occurs in one or more battery cells (110), high-temperature gas, flames, and / or discharged matter may be discharged from the battery cells (110), and such high-temperature gas, flames, and / or discharged matter may be collectively referred to as venting gas (VG). The battery assembly (100) may be provided with a plurality of venting holes (VH) corresponding to each of a plurality of battery cells (110).

[0071] A battery assembly (100) can be accommodated in a pack case (200). A receiving space (S) for accommodating the battery assembly (100) can be formed inside the pack case (200). A plurality of battery assemblies (100) can be accommodated in the receiving space (S). The plurality of battery assemblies (100) can be arranged in various structures or arrangements inside the receiving space (S). For example, some of the plurality of battery assemblies (100) can be arranged to form a row in the X-axis direction, and each of them can have a predetermined width in the X-axis direction. In addition, other some of the plurality of battery assemblies (100) can be arranged to form a row in the Y-axis direction, and each of them can have a predetermined width in the Y-axis direction. However, the structure or arrangement of the plurality of battery assemblies (100) is not limited thereto.

[0072] The cooling vent member (300) may be arranged on the first direction (D1) side of the battery assembly (100). The direction opposite to the first direction (D1) may be the second direction (D2). The second direction (D2) may be, for example, the +Z direction. The battery assembly (100) may be arranged on the second direction (D2) side of the cooling vent member (300).

[0073] The cooling venting member (300) may include, for example, a venting portion (310) and a cooling portion (320), as illustrated in FIG. 4. The venting portion (310) may be configured to allow venting gas (VG) discharged from a venting hole (VH) of the battery assembly (100) to flow. For example, a path through which the venting gas (VG) flows may be provided in the venting portion (310). The venting gas (VG), after being discharged through the venting hole (VH), may flow in the venting portion (310) and be discharged to the outside of the battery pack (10).

[0074] The venting portion (310) may be in communication with the venting hole (VH). The venting portion (310) may be provided at a position corresponding to the venting hole (VH). The venting portion (310) may be in communication with the venting hole (VH) of each of the plurality of battery assemblies (100).

[0075] The venting portion (310) may be configured to pass through a plurality of battery assemblies (100). For example, the plurality of battery assemblies (100) may be stacked and arranged inside the pack case (200), and the venting portion (310) may be configured to extend in a long form along the stacking direction of the battery assemblies, at least part of which passes through one side of the plurality of battery assemblies (100).

[0076] The cooling unit (320) may be configured to cool the battery assembly (100). The cooling unit (320) may also cool the venting gas (VG). A cooling medium (R) may flow in the cooling unit (320). For example, a flow path through which the cooling medium (R) flows may be provided in the cooling unit (320).

[0077] The cooling medium (R) may be supplied from the outside of the battery pack (10) and discharged to the outside, or may be circulated inside the battery pack (10).

[0078] The cooling unit (320) may not be in communication with the venting hole (VH). The cooling unit (320) may be provided at a location that does not correspond to the venting hole (VH). However, the cooling unit (320) may be provided at a location adjacent to the battery assembly (100) or may be provided so as to be in contact with the battery assembly (100). The cooling unit (320) may be configured to pass through a plurality of battery assemblies (100). At least a portion of the cooling unit (320) may be extended to pass through a plurality of battery assemblies (100).

[0079] The battery pack (10) according to the present invention includes a cooling venting member (300) having both a venting member (310) and a cooling member (320), enabling effective venting and cooling.

[0080] In addition, since in the battery pack (10), both the venting part (310) and the cooling part (320) can be arranged together on the same side, the space occupied by the venting part (310) and the cooling part (320) can be reduced, so that the energy density of the battery pack (10) can be improved.

[0081] In addition, since the venting part (310) and the cooling part (320) can be provided as a single part, an improvement in productivity, such as a reduction in the overall cost of the battery pack (10), can be expected.

[0082] In addition, since both the venting section (310) and the cooling section (320) are arranged together on the same side, the venting gas (VG) flowing in the venting section (310) can be effectively cooled by the adjacent cooling section (320) during the flow process, so that the flow energy of the venting gas (VG) can be quickly reduced, and the heat transfer phenomenon can be effectively suppressed or prevented.

[0083]

[0084] Meanwhile, as illustrated in FIGS. 1 and 2, the pack case (200) may have a side wall portion (210) disposed on the side of the battery pack (10). The side wall portion (210) may be disposed, for example, on the X-axis direction and Y-axis direction sides of the battery pack (10), respectively. The side wall portion (210) may surround a receiving space (S) for the battery assembly (100) in a horizontal direction.

[0085] Additionally, the pack case (200) may include a pack cover (220). The pack cover (220) may be configured to vertically cover the accommodation space (S) for the battery assembly (100).

[0086]

[0087] In the above description, the first direction (D1) may be a downward direction. In this case, the cooling venting member (300) may be said to be arranged on the lower side of the battery assembly (100). In this case, the venting member (310) and the cooling member (320) may be said to be arranged on the lower side of the battery assembly (100).

[0088] In the case of a vehicle equipped with a battery pack (10), passengers, such as a driver, are generally positioned above the battery cells (110). If a thermal event occurs and venting gas (VG) is discharged to the upper side of the battery cells (110), this may pose a significant risk to the safety of the passengers. Therefore, in the case where a cooling venting member (300) is arranged at the lower side of the battery assembly (100), as in the present invention, the venting gas (VG) can be guided to the lower side opposite the passengers.

[0089] As in the present invention, when a cooling venting member (300) is placed on the lower side of a battery assembly (100), the venting gas (VG) is guided only in a downward direction, so the heat transfer phenomenon can be minimized.

[0090]

[0091] The venting portion (310) and the cooling portion (320) of the cooling venting member (300) may be provided together in a single layer. The venting portion (310) and the cooling portion (320) may be arranged to form a single layer on the first direction (D1) side of the battery assembly (100). For example, the venting portion (310) and the cooling portion (320) may be provided at substantially the same height. For example, the venting portion (310) and the cooling portion (320) may be provided at substantially the same position with respect to the Z-axis. In addition, the venting portion (310) and the cooling portion (320) may be arranged together on a plane. For example, the venting portion (310) and the cooling portion (320) may not be stacked on each other in the Z-axis direction, but may be arranged together on the XY plane, which is a plane perpendicular to the Z-axis.

[0092] As described above, when the venting unit (310) and the cooling unit (320) are provided together in a single layer, the space occupied by the venting unit (310) and the cooling unit (320) can be minimized, thereby maximizing the energy density of the battery pack (10). In addition, further reduction in the cost of the battery pack (10) can be expected. In addition, cooling of the venting gas (VG) flowing in the venting unit (310) can be performed more effectively.

[0093]

[0094] The venting portion (310) and the cooling portion (320) of the cooling venting member (300) may be arranged alternately. For example, the venting portion (310) and the cooling portion (320) may be arranged alternately in an area of ​​the cooling venting member (300) corresponding to the battery assembly (100). According to one embodiment, the venting portion (310) and the cooling portion (320) may be arranged alternately in one battery assembly (100).

[0095] Referring to part A shown in FIG. 4, part A represents an area of ​​a cooling venting member (300) corresponding to one battery assembly (100).

[0096] In part A of FIG. 4, it is illustrated that the venting portion (310) and the cooling portion (320) are arranged alternately along the Y-axis direction. For example, the cooling portion (320) may be arranged between any two venting portions (310) that are spaced apart from each other in the Y-axis direction. In addition, the venting portion (310) may also be arranged between any two cooling portions (320) that are spaced apart from each other in the Y-axis direction.

[0097] As described above, when the venting unit (310) and the cooling unit (320) are alternately arranged, venting can be performed at various locations of the battery assembly (100), and the battery assembly (100) can be cooled more evenly. Accordingly, the venting gas (VG) can be discharged more effectively from the battery assembly (100), and the cooling performance of the cooling unit (320) can be improved. In addition, there is an advantage in that both venting and cooling can be effectively performed on the first side of one battery assembly (100).

[0098]

[0099] According to one embodiment, the cooling venting member (300) may further include a first bulkhead portion (330), as illustrated in FIGS. 2 and 4.

[0100] The first partition wall (330) may be configured to partition the venting section (310) and the cooling section (320). For example, the first partition wall (330) may be configured to physically block the internal flow path of the venting section (310) and the internal flow path of the cooling section (320) so that they are sealed and not in communication with each other.

[0101] According to one embodiment, the first bulkhead portion (330) may be provided in the form of a bulkhead. For example, as illustrated in FIGS. 2 and 4, it may be configured to physically partition the venting portion (310) and the cooling portion (320) in the form of a bulkhead extending long along the X-axis direction or the Y-axis direction.

[0102] In this way, when the cooling venting member (300) further includes the first partition wall portion (330), the venting member (310) and the cooling member (320) can be formed to be more clearly separated. In addition, the venting member (310) and the cooling member (320) can be effectively blocked, so that the cooling medium (R) can be effectively blocked from flowing into the venting member (310) or the venting gas (VG) can be effectively blocked from flowing into the cooling member (320). In addition, since the venting member (310) and the cooling member (320) can be provided simultaneously through the first partition wall portion (330), cost reduction and productivity improvement of the cooling venting member (300) can be expected.

[0103]

[0104] The first bulkhead portion (330) may, for example, protrude in the first direction (D1), as illustrated in FIG. 2. Accordingly, the first bulkhead portion (330) may have a thickness in the first direction (D1) or the second direction (D2). The height of the path of the venting gas (VG) in the venting portion (310) and the height of the path of the cooling medium (R) in the cooling portion (320) may increase in proportion to the degree of protrusion of the first bulkhead portion (330).

[0105] As the first bulkhead portion (330) protrudes toward the first direction (D1), the venting portion (310) and the cooling portion (320) can be formed more effectively in the cooling venting member (300). In addition, by simply changing the degree of protrusion of the first bulkhead portion (330), the sizes of the respective flow paths of the venting portion (310) and the cooling portion (320) can be changed, thereby reducing the design difficulty of the cooling venting member (300).

[0106]

[0107] According to one embodiment, the venting member (310) and the cooling member (320) may be manufactured as a single unit. For example, in the cooling venting member (300), the venting member (310) and the cooling member (320) may be manufactured as a single component. For example, the cooling venting member (300) may be manufactured by pressing a plate-shaped metal member.

[0108] In this way, when the venting part (310) and the cooling part (320) are manufactured as one piece, the productivity of the cooling venting member (300) can be further improved. In addition, the venting part (310) and the cooling part (320) can be provided in a close and sturdy manner with respect to each other.

[0109]

[0110] Fig. 5 is a bottom view showing the flow of venting gas in the venting section of a cooling venting member (300) according to one embodiment of the present invention, and Fig. 6 is a bottom view showing the flow of cooling medium in the cooling section of a cooling venting member (300) according to one embodiment of the present invention. In Figs. 5 and 6, the flow of venting gas in the venting section and the flow of cooling medium in the cooling section can flow along the direction of the arrows.

[0111] Hereinafter, with reference to FIGS. 1 to 6, a cooling venting member (300) according to one embodiment of the present invention will be described in more detail.

[0112] The venting hole (VH) may include, for example, a first venting hole (VH1) and a second venting hole (VH2), as illustrated in FIG. 3. The first venting hole (VH1) may be positioned approximately at the center of the battery assembly (100). The first venting hole (VH1) may be positioned approximately at the center of the first side of the battery assembly (100). For example, the first venting hole (VH1) may be positioned at the center of the bottom portion of the battery assembly (100) in the -Z direction.

[0113] A plurality of first venting holes (VH1) may be provided. Each of the plurality of first venting holes (VH1) may be provided to correspond to each of the plurality of battery cells (110) provided in the battery assembly (100).

[0114] The second venting hole (VH2) may be positioned outside the first venting hole (VH1) in the battery assembly (100). The second venting hole (VH2) may be positioned outside the first venting hole (VH1) on the first side of the battery assembly (100). For example, the second venting hole (VH2) may be positioned at the bottom of the battery assembly (100) in the -Z direction, and at each of the longitudinal end sides of the battery assembly (100).

[0115] As described above, when the venting hole (VH) is provided with a first venting hole (VH1) and a second venting hole (VH2), the venting holes (VH) can be distributed and arranged at various locations of the battery assembly (100), so that when a thermal event occurs, the venting gas (VG) can be discharged more smoothly.

[0116]

[0117] Referring to FIGS. 3 and 5, the venting portion (310) may include a first venting portion (311), a second venting portion (312), and a third venting portion (313). In the following description, overlapping reference to FIGS. 3 and 5 may make the description easier to understand.

[0118] The first venting portion (311) may be connected to the first venting hole (VH1). For example, venting gas (VG) discharged from the first venting hole (VH1) of the battery assembly (100) may flow through the first venting portion (311).

[0119] According to one embodiment, the cooling venting member (300) may have a first communication hole (341). The first communication hole (341) may be a hole that communicates the first venting hole (VH1) and the first venting portion (311). The first communication hole (341) may be provided to correspond to the first venting hole (VH1). The first venting holes (VH1) of one battery assembly (100) may be communicated with one first venting portion (311), or the first venting holes (VH1) of each of a plurality of battery assemblies (100) may be communicated with each other.

[0120] The second venting portion (312) may be connected to the second venting hole (VH2). For example, venting gas (VG) discharged from the second venting hole (VH2) of the battery assembly (100) may flow through the second venting portion (312).

[0121] According to one embodiment, the cooling venting member (300) may have a second communication hole (342). The second communication hole (342) may be a hole that communicates the second venting hole (VH2) and the second venting portion (312). The second communication hole (342) may be provided to correspond to the second venting hole (VH2). The second venting holes (VH2) of one battery assembly (100) may be communicated with one second venting portion (312), or the second venting holes (VH2) of each of a plurality of battery assemblies (100) may be communicated with each other.

[0122] The third venting portion (313) may be connected to the first venting portion (311) and the second venting portion (312). The third venting portion (313) may connect the first venting portion (311) and the second venting portion (312). For example, in the third venting portion (313), the venting gas (VG) flowing in the first venting portion (311) and the venting gas (VG) flowing in the second venting portion (312) may merge with each other.

[0123] According to one embodiment, the cooling venting member (300) may have a third communication hole (343). The third communication hole (343) may be in communication with the third venting portion (313). The third communication hole (343) may be in communication with the outside of the battery pack (10). For example, venting gas (VG) flowing in the third venting portion (313) may be discharged to the outside through the third communication hole (343). The third communication hole (343) may communicate the third venting portion (313) with a venting device (700) described below. A plurality of third communication holes (343) may be provided.

[0124] As described above, when the venting portion (310) includes the first venting portion (311), the second venting portion (312), and the third venting portion (313), the venting gas (VG) can be discharged from various locations of the battery assembly (100), thereby enabling more effective venting. In addition, the venting gas (VG) can be smoothly discharged to the outside of the battery pack (10).

[0125]

[0126] The cooling unit (320) may be arranged between the first venting unit (311) and the second venting unit (312). For example, at least a portion of the cooling unit (320) may be arranged between the first venting unit (311) and the second venting unit (312). For example, referring to the exemplary configurations of FIGS. 5 and 6, the cooling unit (320) may be arranged in a space between the first venting unit (311) and the second venting unit (312) that are arranged spaced apart from each other in the Y-axis direction or the X-axis direction.

[0127] In this case, the first venting part (311), the cooling part (320), the second venting part (312), the cooling part (320), and the first venting part (311) can be sequentially arranged, so that the venting and cooling of the battery assembly (100) can be more uniformly performed, and more efficient arrangement of the venting part (310) and the cooling part (320) becomes possible. In addition, both the first venting part (311) and the second venting part (312) can be arranged adjacent to the cooling part (320), so that the venting gas (VG) flowing in each of the first venting part (311) and the second venting part (312) can be effectively cooled.

[0128]

[0129] FIG. 7 is a perspective view showing the overall appearance of a battery assembly (100) according to one embodiment of the present invention, FIG. 8 is a perspective view showing the battery assembly (100) according to one embodiment of the present invention as viewed from another direction, and FIG. 9 is a perspective view showing the overall appearance of a battery cell (110) according to one embodiment of the present invention.

[0130]

[0131] Hereinafter, with reference to FIGS. 3 and 7 to 9, a battery assembly (100) according to one embodiment of the present invention will be described in detail.

[0132] Hereinafter, for convenience of explanation, only a battery assembly (100) having a predetermined width, length, and height in the X-axis, Y-axis, and Z-axis directions, and a battery cell (110) provided in the battery assembly (100) will be described.

[0133] The battery assembly (100) may include a battery cell (110), an assembly housing (120), an end plate (130), and a bottom portion (140).

[0134] The assembly housing (120) may have one side (e.g., the first direction (D1) side) open, so that the cross-section may be approximately 'U' shaped. A plurality of battery cells (110) may be accommodated inside the assembly housing (120).

[0135] The end plate (130) can cover both sides of the battery assembly (100). For example, the end plate (130) can cover both sides of the battery assembly (100) in the Y-axis direction.

[0136] The bottom portion (140) can cover an open side of the assembly housing (120). For example, the bottom portion (140) can be positioned on the first direction (D1) side of the assembly housing (120). For example, the bottom portion (140) can cover the -Z direction side of the battery assembly (100).

[0137] A venting hole (VH) may be formed in the bottom portion (140). In addition, the assembly housing (120) and the end plate (130) may have a sealed structure. Therefore, when a thermal event occurs in the battery cell (110) and venting gas (VG) is discharged, the venting gas (VG) cannot be discharged in the second direction (D2) through the assembly housing (120), and may not be discharged through the end plate (130). In addition, the venting gas (VG) can be discharged only through the bottom portion (140) where the venting hole (VH) is formed. Therefore, in the battery assembly (100), the venting gas (VG) can be discharged only in the first direction (D1). Here, since the first direction (D1) may be a downward direction, according to the above-described implementation configuration, the venting of the battery assembly (100) or battery pack (10) may be centered on the downward direction rather than the upward or horizontal direction.

[0138] A plurality of battery cells (110) may be stacked and arranged inside the battery assembly (100). For example, the plurality of battery cells (110) may be stacked along the width direction (X-axis direction) of the battery assembly (100) while standing in a vertical direction (e.g., Z-axis direction).

[0139] A battery cell (110) according to one embodiment of the present invention may have a cell case (111), as illustrated in FIG. 9.

[0140] An electrode assembly in which a positive electrode, a negative electrode, and a separator are laminated can be accommodated inside a cell case (111). The cell case (111) can have a receiving portion (111a), a sealing portion (111b), and a folding portion (111c). An electrode assembly can be accommodated in the receiving portion (111a). The sealing portion (111b) is a portion in which at least a portion of the edge of the receiving portion (111a) is sealed. For example, when the receiving portion (111a) has a substantially rectangular shape, the sealing portion (111b) can be provided on three of the four sides of the edge of the receiving portion (111a), and one side (-Z direction portion) may not be provided. The folding portion (111c) is a portion in which a portion of the sealing portion (111b) is folded, and can be provided, for example, on the other side (+Z direction portion) of the receiving portion (111a). The electrode lead (112) is electrically connected to the electrode assembly, and according to one embodiment, may be configured to protrude toward both sides of the battery cell (110), and may protrude toward both sides of the battery cell (110) (e.g., both sides in the Y-axis direction). In addition, the electrode lead (112) may be configured to protrude in one direction rather than both sides of the battery cell (110).

[0141] Among the sealing portions (111b) of the battery cell (110), a so-called bat ear or dog ear, which is slightly protruding outward, may be formed on the opposite side of the folding portion (111c). The second venting hole (VH2) formed in the bottom portion (140) of the battery assembly (100) may be a venting hole (VH) corresponding to the bat ear or dog ear.

[0142]

[0143] FIG. 10 is a bottom view showing an enlarged portion of a cooling section (320) of a cooling venting member (300) according to one embodiment of the present invention and indicating the flow of a cooling medium.

[0144] Hereinafter, with reference to FIG. 10, a cooling venting member (300) according to one embodiment of the present invention will be described in more detail. According to one embodiment, the cooling venting member (300) may further include a second partition wall portion (360).

[0145] The second partition wall portion (360) may be configured to change the flow direction of the cooling medium (R). The second partition wall portion (360) may be understood to have a different configuration from the first partition wall portion (330). For example, the first partition wall portion (330) may be configured to be positioned between the venting portion (310) and the cooling portion (320) so as to physically partition the venting portion (310) and the cooling portion (320), whereas the second partition wall portion (360) may be understood to be configured to be provided inside the cooling portion (320) so as to change the flow direction of the cooling medium (R).

[0146] The second bulkhead portion (360) may protrude in the first direction (D1) like the first bulkhead portion (330). According to one embodiment, the thickness of the protruding second bulkhead portion (360) may be formed to be the same as the thickness of the first bulkhead portion (330).

[0147] The second bulkhead portion (360) may be formed to be elongated in one direction. The second bulkhead portion (360) may be elongated to pass through a plurality of battery assemblies (100). For example, in the embodiment of FIG. 10, when a plurality of battery assemblies (100) are stacked in the X-axis direction, the second bulkhead portion (360) may be formed to be elongated from the lower portion along the stacking direction of the battery assemblies (100).

[0148] A gap may be formed between one end of the second bulkhead portion (360) and the first bulkhead portion (330), and the flow direction of the cooling medium (R) may be switched in the gap. For example, as illustrated in FIG. 10, the +X direction end of the second bulkhead portion (360) may be spaced apart from the first bulkhead portion (330), and a gap may be formed therebetween, and the flow direction of the cooling medium (R) may be switched from the +X direction to the -X direction in the gap.

[0149] And, at the other end of the second partition wall portion (360), the flow path of the cooling medium (R) of the cooling unit (320) can be partitioned from each other. For example, as illustrated in FIG. 10, the end of the second partition wall portion (360) in the -X direction can be configured in a blocked form so as to block the cooling unit (320) located in the -Y direction from the cooling unit (320) located in the +Y direction.

[0150] Meanwhile, the second bulkhead (360) can guide the flow of the cooling medium (R).

[0151] In this way, when the cooling venting member (300) is provided with the second partition wall portion (360), the flow direction of the cooling medium (R) in the cooling unit (320) can be formed in various ways. In addition, the cooling effect can be improved by lengthening the flow path of the cooling medium (R) in the cooling unit (320). In addition, the flow path of the cooling medium (R) can be formed to pass through all of the plurality of battery assemblies (100).

[0152] Meanwhile, the cooling venting member (300) may be provided with a cooling medium inlet / outlet (350) through which the cooling medium (R) may enter or exit. A plurality of cooling medium inlets / outlets (350) may be provided. One of the plurality of cooling medium inlets / outlets (350) may be configured as an inlet through which the cooling medium (R) enters the cooling unit (320), and the other may be configured as an outlet through which the cooling medium (R) exits the cooling unit (320).

[0153]

[0154] FIG. 11 is a bottom view showing an enlarged portion of a venting portion (310) of a cooling venting member (300) according to one embodiment of the present invention and indicating the flow of venting gas.

[0155] Hereinafter, with reference to FIG. 11, a cooling venting member (300) according to one embodiment of the present invention will be described in more detail.

[0156] According to one embodiment, the cooling venting member (300) may further include a third partition wall portion (370). The third partition wall portion (370) may be configured to increase the flow distance of the venting gas (VG). For example, the third partition wall portion (370) may increase the flow distance of the venting gas (VG) from the second venting portion (312) to the third communication hole (343) by inducing the venting gas (VG) discharged from the second venting portion (312) to move in the opposite direction of the third communication hole (343) rather than directly toward the third communication hole (343).

[0157] The third bulkhead portion (370) may be understood to have a different configuration from the first bulkhead portion (330). For example, as described above, while the first bulkhead portion (330) is configured to be positioned between the venting portion (310) and the cooling portion (320), the third bulkhead portion (370) may be understood to have a configuration provided within the venting portion (310) to increase the flow distance of the venting gas (VG). The third bulkhead portion (370) may be provided between the second venting portion (312) and the third venting portion (313).

[0158] The third bulkhead portion (370) may protrude in the first direction (D1) like the first bulkhead portion (330). The thickness of the protruding third bulkhead portion (370) may be formed to be the same as the thickness of the first bulkhead portion (330).

[0159] The third bulkhead portion (370) may be formed to extend long between the second venting portion (312) and the third venting portion (313). For example, the third bulkhead portion (370) may be formed to extend long in the X-axis direction.

[0160] The second venting portion (312) and the third venting portion (313) can be blocked from each other at a position relatively close to the third communication hole (343) by the third partition wall portion (370). For example, as illustrated in FIG. 11, the -X direction end of the third partition wall portion (370) can be configured in a closed form to block the second venting portion (312) located on the -Y direction side of the third partition wall portion (370) and the third venting portion (313) located on the +Y direction side, and as a result, the second venting portion (312) and the third communication hole (343) can be blocked from each other at a position relatively close to the third communication hole (343) (for example, on the -X direction side).

[0161] The second venting portion (312) and the third venting portion (313) can be connected to each other at a relatively distant position from the third communication hole (343) by the third bulkhead portion (370). For example, as illustrated in FIG. 11, the end of the +X direction of the third bulkhead portion (370) can be configured in an open form so that the second venting portion (312) located on the -Y direction side of the third bulkhead portion (370) and the third venting portion (313) located on the +Y direction side are connected to each other, and as a result, the second venting portion (312) and the third venting portion (313) can be connected to each other at a relatively distant position (e.g., on the +X direction side) from the third communication hole (343).

[0162] When the cooling venting member (300) is provided with the third partition wall portion (370) as described above, the flow distance of the venting gas (VG) can be increased, so that the flow energy of the venting gas (VG) can be reduced more effectively.

[0163]

[0164] Fig. 12 is a bottom view showing a cooling venting member (300) according to a modified example of one embodiment of the present invention.

[0165] Hereinafter, with reference to FIG. 12, a cooling venting member (300) according to a modified example of one embodiment of the present invention will be described in detail. The cooling venting member (300) according to a modified example of one embodiment of the present invention may further include a fourth partition wall portion (380).

[0166] The fourth bulkhead (380) can divide the flow path of the cooling medium (R) in the cooling section (320).

[0167] The fourth bulkhead (380) may be placed inside the cooling unit (320). A plurality of fourth bulkheads (380) may be provided inside the cooling unit (320).

[0168] The fourth bulkhead portion (380) may protrude in the first direction (D1) like the first bulkhead portion (330). The thickness of the protruding fourth bulkhead portion (380) may be formed to be the same as the thickness of the first bulkhead portion (330).

[0169] The fourth bulkhead portion (380) may be formed to be elongated. The fourth bulkhead portion (380) may be elongated to pass through a plurality of battery assemblies (100). For example, in the embodiment of FIG. 12, when some of a plurality of battery assemblies (100) are stacked in the X-axis direction, the fourth bulkhead portion (380) may be configured to be elongated at the bottom thereof along the stacking direction of these battery assemblies (100). In addition, for example, in the embodiment of FIG. 12, when some of a plurality of other battery assemblies (100) are stacked in the Y-axis direction, the fourth bulkhead portion (380) may be configured to be elongated at the bottom thereof along the stacking direction of these battery assemblies (100).

[0170] When the cooling venting member (300) further includes a fourth partition wall portion (380), the number of flow paths of the cooling medium (R) can be increased, so that the cooling medium (R) can be distributed more evenly to various locations of the cooling unit (320).

[0171]

[0172] Meanwhile, in the explanation so far, the venting portion (310) and the cooling portion (320) of the cooling venting member (300) may be closed toward the first direction (D1). For example, in FIGS. 1 to 12, for convenience of explanation, the venting portion (310) and the cooling portion (320) of the cooling venting member (300) are illustrated as being open toward the first direction (D1), but this is not limited thereto. For example, in the cooling venting member (300) according to the present invention, the venting portion (310) and the cooling portion (320) may be implemented in a closed form toward the first direction (D1).

[0173]

[0174] FIG. 13 is a perspective view showing an exploded view of a battery pack (10) according to another embodiment of the present invention, and FIG. 14 is a side cross-sectional view showing a portion of a battery pack (10) according to another embodiment of the present invention in which a venting portion (310) and a cooling portion (320) are indicated.

[0175] Hereinafter, with reference to FIGS. 13 and 14, a battery pack (10) according to another embodiment of the present invention will be described in detail.

[0176] A pack case (200) of a battery pack (10) according to another embodiment of the present invention may be provided with a bottom plate (230). In a battery pack (10) according to another embodiment of the present invention, a cooling vent member (300) may be provided in a form that is open toward the first direction (D1).

[0177] The bottom plate (230) may be arranged on the first direction (D1) side of the cooling vent member (300). For example, the bottom plate (230) may be arranged on the lower side of the cooling vent member (300) and may face the bottom of the cooling vent member (300). The bottom plate (230) may be arranged in close contact with the cooling vent member (300). The bottom plate (230) may cover a portion of the cooling vent member (300) that is open toward the first direction (D1).

[0178] When the pack case (200) has a bottom plate (230), the venting section (310) and the cooling section (320) can be covered by the bottom plate (230), so that the portions of the venting section (310) and the cooling section (320) that are open toward the first direction (D1) can be effectively closed by the bottom plate (230). Accordingly, the venting gas (VG) flow path of the venting section (310) and the cooling medium flow path of the cooling section (320) can be more reliably defined and formed.

[0179]

[0180] Figure 15 is a perspective view showing an enlarged area B of Figure 12 and an exploded view of the sealing member.

[0181] Referring to FIG. 15, a sealing member (500) may be placed in at least one of the first bulkhead portion (330), the second bulkhead portion (360), and the fourth bulkhead portion (380).

[0182] The sealing member (500) may be provided as, for example, a rubber ring, etc. The material or type of the sealing member (500) is not limited thereto.

[0183] A groove (G) into which a sealing member (500) can be inserted may be formed in at least one of the first bulkhead portion (330), the second bulkhead portion (360), and the fourth bulkhead portion (380). The sealing member (500) may be placed between the cooling venting member (300) and the bottom plate (230).

[0184] When a sealing member (500) is arranged in the first bulkhead portion (330), the space between the venting portion (310) (e.g., the second venting portion (312)) and the cooling portion (320) can be effectively sealed. When a sealing member (500) is arranged in the second bulkhead portion (360) or the fourth bulkhead portion (380), the flow paths of the cooling medium (R) of the cooling portion (320) can be more effectively partitioned or divided.

[0185]

[0186] Figure 16 is a perspective view showing an enlarged area B of Figure 12 and a bottom plate (230) being bolted to a cooling vent member (300).

[0187] Referring to Fig. 16, the cooling vent member (300) and the bottom plate (230) may be bolted to each other. A fastening groove (390) may be formed in at least one of the first bulkhead portion (330), the second bulkhead portion (360), and the fourth bulkhead portion (380). A fastening hole (231) corresponding to the fastening groove (390) may be formed in the bottom plate (230). The fastening member (B) may pass through the fastening hole (231) and be fastened to the fastening groove (390). The fastening member (B) may be, for example, a bolt.

[0188] Meanwhile, the aforementioned sealing member (500) may be placed around the fastening groove (390). The sealing member (500) may seal the area around the fastening groove (390).

[0189]

[0190] FIG. 17 is a perspective view showing an exploded view of a battery pack (10) according to another embodiment of the present invention, and FIG. 18 is a side cross-sectional view showing the flow of venting gas when a thermal event occurs in a battery pack (10) according to another embodiment of the present invention.

[0191] Hereinafter, with reference to FIGS. 17 and 18, a battery pack (10) according to another embodiment of the present invention will be described in detail. A battery pack (10) according to another embodiment of the present invention may further include a fireproof sheet (400).

[0192] The refractory sheet (400) may include a heat-resistant material. Here, the heat-resistant material refers to a material with high heat resistance or fire resistance, and various materials such as mica may be applied. The refractory sheet (400) may be placed between the battery assembly (100) and the cooling vent member (300).

[0193] In this way, when the battery pack (10) further includes a refractory sheet (400), the reverse inflow of venting gas (VG) can be effectively suppressed or prevented. For example, when a thermal event occurs in a specific battery cell (110) and venting gas (VG) is discharged, the refractory sheet (400) may rupture only in the portion corresponding to the battery cell (110), and the remaining portions may not rupture. Accordingly, the venting gas (VG) discharged from the battery cell (110) can be effectively suppressed or prevented from flowing back into other battery cells (110).

[0194] For example, as illustrated in FIG. 18, when a venting gas (VG) discharged from a specific battery cell (110) passes through the refractory sheet (400) and the first venting hole (VH1) and the first communication hole (341) to flow to the first venting portion (311), the venting gas (VG) may not flow back into another battery cell (110) by the refractory sheet (400) and may flow toward the third venting portion (313).

[0195] Meanwhile, for convenience of explanation, only the first venting hole (VH1) and the first venting portion (311) are illustrated in FIG. 18. However, when the venting gas (VG) exposed from a specific battery cell (110) penetrates the refractory sheet (400) and flows through the second venting hole (VH2) and the second communication hole (342) to the second venting portion (312), the venting gas (VG) may not flow back into another battery cell (110) by the refractory sheet (400) and may flow toward the third venting portion (313).

[0196] Meanwhile, the refractory sheet (400) may be individually provided only in the portion corresponding to the first venting hole (VH1) or the second venting hole (VH2) so as to cover only the first venting hole (VH1) or the second venting hole (VH2).

[0197] Meanwhile, the refractory sheet (400) may be configured in the form of a break line or a preliminary break line, etc., so that it can be easily broken by venting gas in the first venting hole (VH1) or the second venting hole (VH2), and the break line or the preliminary break line may be formed by notching processing, etc.

[0198]

[0199] FIG. 19 is a perspective view showing a battery pack according to one embodiment of the present invention with the pack cover removed.

[0200] The battery pack (10) according to the present invention may further include at least one electrical component (800). The electrical component (800) may be various devices for controlling the charging and discharging of battery cells (110), such as a BMS (Battery Management System), a current sensor, a fuse, etc. For convenience of explanation, an example of the electrical component (800) is illustrated in FIG. 19, but the electrical component (800) is not limited thereto and may be applied in various configurations and structures. In addition, the electrical component (800) may be installed outside the battery pack (10) rather than inside it.

[0201] The electrical component (800) may be arranged on the second direction (D2) side of the battery assembly (100). For example, the cooling venting member (300) may be arranged on the first direction (D1) side of the battery assembly (100), and the electrical component (800) may be arranged on the opposite side of the cooling venting member (300) with respect to the battery assembly (100). For example, the cooling venting member (300) may be arranged on the lower side of the battery assembly (100), and the electrical component (800) may be arranged on the upper side of the battery assembly (100).

[0202] The accommodation space (S) formed inside the pack case (200) may include a first accommodation space (S1) and a second accommodation space (S2).

[0203] The first receiving space (S1) can be understood as a space in which the battery assembly (100) is received.

[0204] The second receiving space (S2) can be understood as a space where the electrical component (800) rather than the battery assembly (100) is received. The second receiving space (S2) can be arranged on the second direction (D2) side of the battery assembly (100). Accordingly, the electrical component (800) can be received on the second direction (D2) side of the battery assembly (100).

[0205] When the electrical component (800) is arranged as described above, it becomes difficult for the high-temperature venting gas (VG) induced to the cooling venting member (300) to flow into the electrical component (800), so that damage to the electrical component (800) due to high temperature can be effectively suppressed or prevented.

[0206]

[0207] FIG. 20 is a cross-sectional perspective view showing a side channel (211) in a battery pack (10) according to one embodiment of the present invention, and FIG. 21 is a perspective view showing the battery pack shown in FIG. 1 as viewed from another direction.

[0208] Hereinafter, with reference to FIGS. 1 and 21, a venting device (700) of a battery pack (10) according to one embodiment of the present invention will be described in detail.

[0209] A battery pack (10) according to one embodiment of the present invention may further include a venting device (700). The venting device (700) may be configured to communicate with the venting portion (310) and the outside. The venting device (700) may be configured to allow venting gas (VG) to be discharged to the outside.

[0210] The venting device (700) may be a simple hole-shaped device that penetrates the pack case (200), or alternatively, it may be configured to be closed in a normal state and open only when there is a change in pressure or temperature inside the pack case (200).

[0211] The venting device (700) may be provided on the side wall portion (210). For example, the venting device (700) may be provided on the -X direction side wall portion (210).

[0212] A side channel (211) may be formed inside the side wall portion (210) equipped with the venting device (700). The side channel (211) may communicate the venting device (700) and the third venting portion (313) with each other. The side channel (211) and the third venting portion (313) may communicate with each other at the third communication hole (343).

[0213] In this way, when the venting device (700) is further included, the venting gas (VG) inside the battery pack (10) can be discharged to the outside more smoothly.

[0214] Meanwhile, referring to FIG. 21, the venting device (700) may also be provided on the +X-direction side wall portion (210). In this case, a side channel (211) may be formed inside the +X-direction side wall portion (210).

[0215]

[0216] Fig. 22 is a drawing showing a vehicle according to one embodiment of the present invention.

[0217] Hereinafter, referring to FIG. 22, the battery pack (10) according to the present invention can be applied to a vehicle (V) such as an electric vehicle or a hybrid vehicle. For example, the vehicle (V) according to the present invention can include the battery pack (10) according to the present invention. The battery pack (10) can be installed in a body frame or a trunk space under a vehicle seat. In addition to the battery pack (10), the vehicle (V) according to an embodiment of the present invention can further include various other components included in the vehicle. For example, the vehicle (V) according to an embodiment of the present invention can further include a body, a motor, a control device such as an ECU (electronic control unit), etc., in addition to the battery pack (10) according to an embodiment of the present invention.

[0218] In addition, it goes without saying that the battery pack (10) according to one embodiment of the present invention may be installed in other devices, apparatuses, and facilities, such as energy storage systems that use secondary batteries, in addition to automobiles (V).

[0219]

[0220] In this specification, terms indicating directions such as up, down, left, right, front, and back 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.

[0221] 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.

[0222]

[0223] [Explanation of symbols]

[0224] 10: Battery pack

[0225] 100: Battery assembly

[0226] 110: Battery cell

[0227] 111: Cell Case

[0228] 111a: Storage compartment

[0229] 111b: Sealing part

[0230] 111c: Folding section

[0231] 112: Electrode lead

[0232] 120: Assembly housing

[0233] 130: Endplate

[0234] 140: Bottom

[0235] 200: Pack Case

[0236] 210: Side wall

[0237] 211: Side Channel

[0238] 220: Pack Cover

[0239] 230: Bottom plate

[0240] 231: Fastening hole

[0241] 300: Cooling venting member

[0242] 310: Venting Department

[0243] 311: 1st Venting Department

[0244] 312: 2nd Venting Department

[0245] 313: Third Venting Department

[0246] 320: Cooling section

[0247] 330: First bulkhead

[0248] 341: First communication hall

[0249] 342: Second communication hall

[0250] 343: Third Communication Hall

[0251] 350: Cooling medium inlet

[0252] 360: Second bulkhead

[0253] 370: Third bulkhead

[0254] 380: 4th bulkhead

[0255] 390: Contract Home

[0256] 400: Fireproof sheet

[0257] 500: Sealing member

[0258] 600: Fastening member

[0259] 700: Venting Device

[0260] 800: Battlefield parts

[0261] B: Fastening member

[0262] D1: First direction

[0263] D2: Second direction

[0264] G: Groove

[0265] R: Cooling medium

[0266] S: Reception space

[0267] S1: First receiving space

[0268] S2: Second reception space

[0269] VG: Venting gas

[0270] VH: Venting Hall

[0271] VH1: Venting Hall 1

[0272] VH2: Venting Hall 2

[0273] V: Car

Claims

1. At least one battery assembly having a plurality of battery cells and having a venting hole on a first direction side; A pack case having a space formed to accommodate the battery assembly; and A battery pack comprising a cooling venting member, which is arranged on the first direction side of the battery assembly and has a venting part through which venting gas discharged from the venting hole flows, and a cooling part that cools the battery assembly.

2. In paragraph 1, The above first direction is, Battery pack facing downward.

3. In paragraph 1, The above venting part and the above cooling part, Battery packs mounted together on a single layer.

4. In paragraph 3, The above venting part and the above cooling part, Battery packs arranged alternately in the area of ​​the cooling venting member corresponding to the above battery assembly.

5. In paragraph 3, The above cooling venting member, A battery pack further comprising a first bulkhead section that divides the venting section and the cooling section.

6. In paragraph 5, The above first bulkhead section is, Battery pack protruding toward the first direction.

7. In paragraph 1, The above venting part and the above cooling part, Battery pack manufactured in one piece.

8. In paragraph 1, The above venting hole is, A first venting hole positioned approximately at the center side of the battery assembly; and A battery pack having a second venting hole positioned outside the first venting hole in the above battery assembly.

9. In paragraph 8, The above venting part, A first venting portion communicating with the first venting hole; A second venting portion communicating with the second venting hole; and A battery pack having a third venting portion that is connected to the first venting portion and the second venting portion.

10. In paragraph 9, The above cooling unit, A battery pack disposed between the first venting portion and the second venting portion.

11. In paragraph 1, The above cooling venting member, A battery pack configured to change the flow direction of a cooling medium and further comprising a second bulkhead provided inside the cooling unit.

12. In paragraph 1, The above cooling venting member, A battery pack configured to increase the flow distance of venting gas and further comprising a third bulkhead provided inside the venting portion.

13. In paragraph 1, The above pack case is, A battery pack having a bottom plate arranged on the first direction side of the above cooling vent member.

14. In paragraph 1, A battery pack further comprising a refractory sheet disposed between the battery assembly and the cooling venting member.

15. In paragraph 1, Contains at least one more battlefield component, The above-mentioned electric components are, A battery pack arranged on the second direction side of the above battery assembly.

16. In paragraph 1, A battery pack further comprising a venting device configured to connect the venting portion and the outside.

17. A vehicle comprising at least one battery pack according to any one of claims 1 to 16.

Images