Battery pack and device comprising same

Abstract

A battery pack according to an embodiment of the present invention comprises: a pack frame on which a plurality of battery cell assemblies is mounted; and at least one venting part positioned on the side surface of the pack frame, wherein: the side surface of the pack frame has a hollow structure in which an empty space is formed between the outer surface of the pack frame and the inner surface of the pack frame; at least one pair of guide plates are arranged in the empty space formed on the side surface of the pack frame, on which the venting part is formed; the pair of guide plates are arranged symmetrically to each other while having the venting part interposed therebetween; and the pair of guide plates are arranged to have an ascending inclination in a direction toward the venting part with respect to the lower part of the pack frame.

Description

Battery pack and device including same

[0001] Cross-citation with related application(s)

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2024-0054635, filed April 24, 2024, the entire contents of which are incorporated herein by reference.

[0003] The present invention relates to a battery pack and a device including the same, and more particularly, to a battery pack and a device including the same, which prevent spark particles generated from a battery cell when a thermal runaway phenomenon occurs inside the battery pack from being emitted to the outside of the battery pack, and which can easily discharge gas to the outside when the pressure inside the battery pack exceeds a specific pressure.

[0004] Secondary batteries, which boast high electrical properties such as high energy density and easy applicability across a wide range of product groups, are widely used not only in portable devices but also in electric or hybrid vehicles powered by electrical power sources, as well as in power storage devices. These batteries are attracting attention as a new energy source for environmental friendliness and energy efficiency, not only for their primary advantage of dramatically reducing fossil fuel use, but also because they produce no byproducts from energy use.

[0005] 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.

[0006] In general, lithium secondary batteries can be classified into cylindrical or square 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, with the growing need for large-capacity secondary battery structures, including the increasing use of secondary batteries as energy storage sources, demand is growing for battery packs with medium- to large-sized modular structures, which are composed of multiple secondary batteries connected in series or parallel. These battery modules, in which multiple battery cells are connected in series or parallel to form a battery cell stack, offer increased capacity and output. Furthermore, multiple battery modules can be mounted with various control and protection systems, such as a Battery Management System (BMS) and a cooling system, to form a battery pack.

[0008] Battery packs are composed of multiple battery modules, and if any of these modules experience overvoltage, overcurrent, or overheating, the safety and operational efficiency of the battery pack can be compromised. In particular, battery pack capacity is steadily increasing to improve driving range. Consequently, the internal energy of the pack also increases. Therefore, structural design is necessary to meet increasingly stringent safety standards and ensure the safety of both the vehicle and the driver.

[0009] In this regard, recently strengthened regulations on electric vehicles require that no flames be observed outside the battery pack within five minutes of a thermal runaway event within the battery cell. Specifically, if thermal runaway occurs within a battery cell, spark particles can be generated due to internal short circuits. These spark particles then serve as an ignition source, and when they interact with venting gas (comprising vaporized electrolyte) and oxygen inside and outside the battery pack, flames can occur.

[0010] Accordingly, there is a growing need to develop a battery pack that prevents spark particles inside the battery pack from being released outside the battery pack when a thermal runaway of a battery cell occurs, while also allowing gas to be easily discharged outside when the pressure inside the battery pack exceeds a certain pressure.

[0011] The problem to be solved by the present invention is to provide a battery pack and a device including the same, which prevent spark particles generated in a battery cell from being emitted to the outside of the battery pack when a thermal runaway phenomenon occurs inside the battery pack, and which can easily discharge gas to the outside when the pressure inside the battery pack exceeds a specific pressure.

[0012] The problems to be solved by the present invention are not limited to the problems described above, and problems 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.

[0013] According to one embodiment of the present invention, a battery pack comprises: a pack frame having a plurality of battery cell assemblies mounted thereon; at least one venting portion positioned on a side surface of the pack frame, the side surface of the pack frame having a hollow structure in which a hollow space is formed between an outer surface of the pack frame and an inner surface of the pack frame; at least one pair of guide plates is arranged in the hollow space formed on the side surface of the pack frame in which the venting portion is formed, the pair of guide plates are arranged symmetrically with each other with the venting portion interposed therebetween, and the pair of guide plates are arranged to have an incline that is lifted in a direction toward the venting portion based on a lower portion of the pack frame.

[0014] The above at least one pair of guide plates may be arranged to be spaced apart from each other in the height direction of the pack frame based on the venting portion.

[0015] The above at least one pair of guide plates may be arranged so that the angle of inclination raised in the direction toward the venting portion with respect to the lower portion of the pack frame is the same or increases as the plate is positioned at the upper portion of the venting portion.

[0016] The at least one pair of guide plates includes a pair of first guide plates and a pair of second guide plates, and the pair of first guide plates and the pair of second guide plates can be arranged to be spaced apart from each other in the height direction of the pack frame based on the venting portion.

[0017] The pair of first guide plates may be arranged adjacent to the upper portion of the venting portion, and the pair of second guide plates may be arranged adjacent to the lower portion of the venting portion.

[0018] The pair of first guide plates are lifted at a first inclination angle in a direction toward the venting portion based on the lower portion of the pack frame, and the pair of second guide plates are lifted at a second inclination angle in a direction toward the venting portion based on the lower portion of the pack frame, and the first inclination angle may be equal to or greater than the second inclination angle.

[0019] The above venting portion is coupled to a venting hole penetrating the side of the pack frame, and the above venting portion may be a relief valve.

[0020] The above pair of guide plates can be arranged so as to have an incline that is raised in a direction toward the venting portion based on the lower portion of the pack frame while being placed between the venting holes.

[0021] The above venting hole includes a pair of first venting holes and second venting holes formed at the same position on the side of the pack frame, the first venting hole is formed on the outer surface of the side of the pack frame, the second venting hole is formed on the inner surface of the side of the pack frame, and the venting portion may be coupled to the first venting hole.

[0022] It may further include a filter portion positioned between the venting portion and the first venting hole.

[0023] A device according to another embodiment of the present invention includes the battery pack described above.

[0024] According to embodiments, the battery pack of the present invention and the device including the same have a side of the pack frame having a hollow structure in which a space is formed between the outer surface of the pack frame and the inner surface of the pack frame, and at least one pair of guide plates are arranged in the empty space formed in the side of the pack frame in which the venting portion is formed, so that spark particles generated from a battery cell when a thermal runaway phenomenon occurs inside the battery pack are prevented from being emitted to the outside of the battery pack, and when the pressure inside the battery pack exceeds a specific pressure, gas can be easily discharged to the outside.

[0025] 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.

[0026] FIG. 1 is a perspective view showing a battery pack according to one embodiment of the present invention.

[0027] FIG. 2 is an enlarged perspective view showing the side of the pack frame where the venting portion of the battery pack of FIG. 1 is located.

[0028] Figure 3 is a perspective view showing the venting portion of Figure 2 in an open state.

[0029] Fig. 4 is a drawing showing a part of a cross-section taken along the a-a' axis of Fig. 1.

[0030] Fig. 5 is a drawing showing a part of a cross-section cut along the b-b' axis of Fig. 1.

[0031] Figure 6 is a front view of the cross-section of Figure 4 viewed from the front.

[0032] Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein.

[0033] In order to clearly explain the present invention, parts that are not related to the description are omitted, and the same reference numerals are used for identical or similar components throughout the specification.

[0034] Furthermore, the sizes and thicknesses of each component shown in the drawings are arbitrarily indicated for convenience of explanation, and thus the present invention is not necessarily limited to the illustrated components. In the drawings, the thicknesses are enlarged to clearly represent various layers and regions. Furthermore, in the drawings, the thicknesses of some layers and regions are exaggerated for convenience of explanation.

[0035] Additionally, throughout the specification, whenever a part is said to “include” a component, this does not mean that it excludes other components, but rather that it may include other components, unless otherwise specifically stated.

[0036] Additionally, throughout the specification, when we say "in plan", we mean when the target portion is viewed from above, and when we say "in cross section", we mean when the target portion is viewed from the side in a cross-section cut vertically.

[0037] Below, a battery pack according to an embodiment of the present invention is described.

[0038] Fig. 1 is a perspective view illustrating a battery pack according to one embodiment of the present invention. Fig. 2 is an enlarged perspective view illustrating a side surface of a pack frame where a venting portion of the battery pack of Fig. 1 is located. Fig. 3 is a perspective view illustrating the venting portion of Fig. 2 in an open state.

[0039] Referring to FIGS. 1 to 3, a battery pack (1000) according to one embodiment of the present invention includes a pack frame (1100) on which a plurality of battery cell assemblies (not shown) are mounted; and at least one venting portion (1200) positioned on a side of the pack frame (1100). Here, the position and number of the venting portions (1200) are not limited to those shown in the drawings, and may be applied appropriately and differently as needed.

[0040] Here, the pack frame (1100) may include a lower pack frame (1110) on which a plurality of battery cell assemblies (not shown) are mounted, an upper pack frame (1120) covering the upper portions of the plurality of battery cell assemblies (not shown), and a side pack frame (1130) covering the side portions of the plurality of battery cell assemblies (not shown). Here, the lower pack frame (1110) may be referred to as the same as the lower surface of the pack frame (1100), the upper pack frame (1120) may be referred to as the same as the upper surface of the pack frame (1100), and the side pack frame (1130) may be referred to as the same as the side portion of the pack frame (1100).

[0041] More specifically, the upper pack frame (1120) may cover the upper portion of the lower pack frame (1110) while the plurality of battery cell assemblies (not shown) are mounted on the lower pack frame (1110). In addition, the side pack frame (1130) may be arranged along the outer periphery of the lower pack frame (1110) and may extend from the bottom of the lower pack frame (1110) toward the upper pack frame (1120). Here, the lower pack frame (1110) and the upper pack frame (1120) may be joined to each other by a method such as welding or adhesiveness with the side pack frame (1130) interposed therebetween, thereby sealing the inside of the battery pack (1000).

[0042] In addition, although not illustrated in detail in the drawing, a plurality of battery cell assemblies (not shown) may be mounted inside the battery pack (1000) according to the present embodiment. Here, the plurality of battery cell assemblies (not shown) may be mounted on the lower pack frame (1100), and the plurality of battery cell assemblies (not shown) may be partitioned from each other through separate internal frames positioned inside the lower pack frame (1100), and the arrangement direction of the plurality of battery cell assemblies (not shown) may also be appropriately changed as needed.

[0043] For example, the plurality of battery cell assemblies (not shown) include a battery cell stack (not shown) in which a plurality of battery cells are stacked, and a module frame (not shown) that accommodates the battery cell stack (not shown).

[0044] The above battery cell is preferably a pouch-type battery cell. For example, the battery cell can be manufactured by housing the electrode assembly in a pouch case made of a laminate sheet including a resin layer and an inner layer, and then heat-sealing the sealing portion of the pouch case. The battery cell can be formed in a rectangular sheet-like structure. The battery cell can be composed of a plurality of battery cells, and the plurality of battery cells are stacked so as to be electrically connected to each other to form a battery cell stack (not shown). Here, the number of battery cells constituting the battery cell stack (not shown) can be adjusted as needed.

[0045] The above module frame (not shown) may include an upper cover and a U-shaped frame. Here, the U-shaped frame may include a bottom portion and two side portions extending upward from both ends of the bottom portion. At this time, the bottom portion may cover a lower surface of a battery cell stack (not shown), and the side portions may cover a side surface of the battery cell stack (not shown). The upper cover and the U-shaped frame may be joined by welding or the like in a state where corresponding corner portions are in contact with each other, thereby forming a structure that covers the upper, lower, left, and right sides of the battery cell stack (not shown). To this end, the upper cover and the U-shaped frame may be made of a metal material having a predetermined strength.

[0046] However, the structure of the module frame (not shown) is not limited thereto, and in another embodiment, the module frame (not shown) may have a monoframe structure. Here, the monoframe may be in the form of a metal plate in which the upper surface, lower surface, and both sides are integrated. The monoframe may be manufactured by extrusion molding. In addition, the structure of the module frame (not shown) may be provided as an L-shaped frame structure in addition to a monoframe or a U-shaped frame, and may also be provided in various structures not described in the above-described examples.

[0047] In addition, the plurality of battery cell assemblies (not shown) further include busbar frames positioned at the front and rear sides of the battery cell stack (not shown), respectively, and end plates covering the busbar frames. Here, a busbar (not shown) electrically connected to the battery cell stack (not shown) may be positioned on the busbar frame. Accordingly, the end plates can physically protect the battery cell stack (not shown) and other electrical components from external impact.

[0048] However, it is not limited thereto, and the plurality of battery cell assemblies (not shown) may have a module-less structure in which the module frame (not shown) is omitted, so that the battery pack (1000) of the present embodiment may have a cell to pack structure.

[0049] Referring to FIGS. 1 to 3, in the battery pack (1000) according to the present embodiment, the venting portion (1200) is coupled to a venting hole (1130H) penetrating the side of the pack frame (1100), and the venting portion (1200) may be a relief valve.

[0050] The venting portion (1200) is a relief valve that opens when the pressure inside the battery pack (1000) reaches a certain level or higher, and closes when the pressure falls below a certain level. However, the structure of the venting portion (1200) is not limited thereto, and any configuration that allows gas inside the battery pack (1000) to be discharged to the outside in a situation where the inside of the battery pack (1000) has high pressure, such as during thermal runaway, may be included in the present embodiment.

[0051] Accordingly, in the battery pack (1000) according to the present embodiment, gas generated inside the battery pack (1000) is appropriately discharged to the outside through the venting portion (1200) when the internal pressure of the pack frame (1100) reaches a certain level or higher, thereby preventing an explosion of the battery pack (1000) due to an increase in the internal pressure of the pack frame (1100) and additional damage resulting therefrom.

[0052] Fig. 4 is a drawing showing a part of a cross-section taken along the a-a' axis of Fig. 1. Fig. 5 is a drawing showing a part of a cross-section taken along the b-b' axis of Fig. 1. Fig. 6 is a front view of the cross-section of Fig. 4 as viewed from the front.

[0053] Referring to FIGS. 4 and 5, the side of the pack frame (1100) may be a hollow structure in which a void is formed between the outer surface of the pack frame (1100) and the inner surface of the pack frame (1100). In other words, the side pack frame (1300) may have a hollow structure in which a void is formed between the outer surface (1131) of the side pack frame (1130) and the inner surface (1132) of the side pack frame (1130). That is, the hollow structure here may mean that the outer surface (1131) of the side pack frame (1130) and the inner surface (1132) of the side pack frame (1130) are spaced apart from each other, and there is no separate material or the like filled between the outer surface (1131) of the side pack frame (1130) and the inner surface (1132) of the side pack frame (1130).

[0054] The venting hole (1130H) may include a pair of first venting holes (1131H) and second venting holes (1132H) formed at the same position on the side of the pack frame (1100). The first venting hole (1131H) may be formed on the outer surface of the side of the pack frame (1100), and the second venting hole (1132H) may be formed on the inner surface of the side of the pack frame. That is, in the side pack frame (1130), the first venting hole (1131H) may be formed on the outer surface (1131) of the side pack frame (1130), and the second venting hole (1132H) may be formed on the inner surface of the side pack frame (1130).

[0055] Additionally, the venting portion (1200) may be coupled to the first venting hole (1131H). In other words, the second venting hole (1132H) may be open toward the inside of the pack frame (1100).

[0056] Accordingly, in the battery pack (1000) according to the present embodiment, before the internal pressure of the pack frame (1100) reaches a certain level or higher, some of the gas generated inside the battery pack (1000) may flow into the empty space inside the side pack frame (1130) through the second venting hole (1132H) and settle to the lower part of the empty space inside the pack frame (1130) along the direction of gravity. In particular, when a thermal runaway phenomenon occurs inside the battery pack (1000), spark particles generated from the battery cells may flow into the empty space inside the side pack frame (1130) through the second venting hole (1132H), and spark particles may be prevented from accumulating in the venting portion (1200) above a critical point.

[0057] In addition, in the battery pack (1000) according to the present embodiment, after the internal pressure of the pack frame (1100) reaches a certain level or higher, spark particles generated from the battery cells during a thermal runaway phenomenon inside the battery pack (1000) are already accumulated in the empty space inside the side pack frame (1130) through the second venting hole (1132H), thereby preventing or minimizing the discharge of spark particles to the outside of the battery pack (1000).

[0058] Referring to FIGS. 4 to 6, at least one pair of guide plates (1135) may be arranged in an empty space formed on the side of the pack frame (1100) in which the venting portion (1200) is formed.

[0059] Here, at least one pair of guide plates (1135) may be made of the same material as the pack frame (1100) and may be integrated with the pack frame (1100). For example, the pair of guide plates (1135) may be plates extending in a straight line as shown in FIGS. 4 and 6. However, the shape of the pair of guide plates (1135) is not limited thereto, and any shape capable of guiding the flow of sparkle particles flowing into the empty space inside the pack frame (1100) may be applied to the present embodiment.

[0060] More specifically, in the empty space formed inside the side frame (1130), at least one pair of guide plates (1135) may be arranged symmetrically with respect to each other with the venting portion (1200) interposed therebetween. For example, one pair of guide plates (1135) may be arranged symmetrically with respect to the center of the venting portion (1200).

[0061] In addition, a pair of guide plates (1135) may be arranged to have an incline that is lifted in the direction toward the venting portion (1200) based on the lower portion of the pack frame (1100). In other words, a pair of guide plates (1135) may be arranged to have an incline that is lifted in the direction toward the venting portion (1200) based on the lower portion of the pack frame (1100) while being placed between the venting holes (1130H). For example, as shown in FIGS. 4 and 5, a pair of guide plates (1135) may be arranged to have an incline that is lifted in the z-axis direction toward the venting portion (1200) based on the xy plane, which is the same as the extension direction of the lower portion of the pack frame (1100).

[0062] Accordingly, in the battery pack (1000) according to the present embodiment, the pair of guide plates (1135) can guide spark particles introduced into the empty space inside the side pack frame (1130) to settle at the bottom of the empty space inside the pack frame (1100) along the inclination of the pair of guide plates (1135), thereby preventing the spark particles from accumulating at a specific location on the guide plates (1135) and allowing the spark particles to be dispersed over a wider area. In addition, the spark particles settled at the bottom of the empty space inside the pack frame (1100) can have their movement restricted by the pair of guide plates (1135). That is, even if a flow of gas is generated that is discharged through the venting portion (1200), the pair of guide plates (1135) can more effectively prevent or minimize the spark particles from being discharged to the outside of the battery pack (1000).

[0063] In addition, at least one pair of guide plates (1135) may include a pair of first guide plates (1135a) and a pair of second guide plates (1135b). For example, as illustrated in FIGS. 4 to 6, at least one pair of guide plates (1135) may include a pair of first guide plates (1135a), a pair of second guide plates (1135b), a pair of third guide plates (1135c), and a pair of fourth guide plates (1135d). However, the number of the pair of guide plates (1135) is not limited thereto, and the number may be appropriately adjusted as needed.

[0064] In addition, at least one pair of guide plates (1135) may be arranged to be spaced apart from each other in the height direction of the pack frame (1100) with respect to the venting portion (1200). More specifically, with respect to the venting portion (1200), a pair of first guide plates (1135a) and a pair of second guide plates (1135b) may be arranged to be spaced apart from each other in the height direction of the pack frame (1100). For example, as illustrated in FIGS. 4 to 6, a pair of first guide plates (1135a), a pair of second guide plates (1135b), a pair of third guide plates (1135c), and a pair of fourth guide plates (1135d) may be arranged to be spaced apart from each other in the height direction of the pack frame (1100). Here, the height direction of the pack frame (1100) may mean the z-axis direction, as illustrated in FIGS. 4 to 6.

[0065] In a battery pack (1000) according to another embodiment of the present invention, at least one pair of guide plates (1135) may be positioned so that the angle of inclination raised in the direction toward the venting portion (1200) based on the lower portion of the pack frame (1100) is the same or increases as the plate is positioned at the upper portion of the venting portion (1200).

[0066] More specifically, a pair of first guide plates (1135a) may be arranged adjacent to the upper portion of the venting portion (1200), and a pair of second guide plates (1135b) may be arranged adjacent to the lower portion of the venting portion (1200). At this time, a pair of first guide plates (1135a) may be arranged at a first inclination angle ( ) is lifted up, and a pair of second guide plates (1135b) are inclined at a second angle ( ) in the direction toward the venting portion (1200) based on the lower part of the pack frame (1100). ) is lifted up, and the first inclination angle ( ) is the second slope ( ) may be equal to or greater than this.

[0067] For example, as shown in FIGS. 4 to 6, a pair of third guide plates (1135c) are inclined at a third angle in the direction toward the venting portion (1200) based on the lower portion of the pack frame (1100). ) is lifted up, and a pair of fourth guide plates (1135d) are inclined at a fourth angle in the direction toward the venting portion (1200) based on the lower part of the pack frame (1100). ) is lifted up, and the third incline ( ) is the fourth inclination angle ( ) may be equal to or greater than the first inclination angle ( )≥2nd slope angle( )≥3rd inclination angle( )≥4th inclination angle( )” may be.

[0068] Accordingly, in the battery pack (1000) according to the present embodiment, the inclination angle of at least one pair of guide plates (1135) is the same or is arranged to increase as it is positioned higher than the venting portion (1200), so that at least one pair of guide plates (1135) can induce the sparkle particles to flow more quickly toward the lower portion of the pack frame (1100) as the inflow position of the sparkle particles is relatively higher.

[0069] In another embodiment of the present invention, a battery pack (1000) may further include a filter unit (not shown) positioned between the venting unit (1200) and the first venting hole (1131H). For example, the filter unit (not shown) may be a structure such as a mesh plate.

[0070] Accordingly, in the battery pack (1000) according to the present embodiment, sparkle particles can be more effectively prevented or minimized from being discharged to the outside of the battery pack (1000) by the flow of gas discharged through the venting portion (1200) through the filter portion (not shown) located between the venting portion (1200) and the first venting hole (1131H).

[0071] A device according to another embodiment of the present invention includes the battery pack described above. While such a device may be applied to transportation devices such as electric bicycles, electric vehicles, and hybrid vehicles, the present invention is not limited thereto and may be applied to various devices that utilize battery modules and battery packs including the same, which also fall within the scope of the present invention.

[0072] Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims also fall within the scope of the present invention.

[0073] [Explanation of symbols]

[0074] 1000: Battery pack

[0075] 1100: Pack Frame

[0076] 1110: Lower pack frame

[0077] 1120: Upper pack frame

[0078] 1130: Side pack frame

[0079] 1130H: Venting Hall

[0080] 1135: Guide Plate

[0081] 1200: Benting Department

Claims

1. A pack frame having multiple battery cell assemblies mounted thereon; At least one venting portion positioned on the side of the pack frame, The side of the above pack frame is a hollow structure in which a blank space is formed between the outer surface of the pack frame and the inner surface of the pack frame, At least one pair of guide plates are arranged in a hollow space formed on the side of the pack frame in which the venting portion is formed, The above pair of guide plates are arranged symmetrically with the venting portion between them, A battery pack in which the pair of guide plates are arranged so as to have an incline that is raised in the direction toward the venting portion based on the lower portion of the pack frame.

2. In paragraph 1, A battery pack in which at least one pair of guide plates are spaced apart from each other in the height direction of the pack frame based on the venting portion.

3. In paragraph 2, A battery pack in which at least one pair of guide plates are positioned such that the angle of inclination raised in the direction toward the venting portion is the same based on the lower portion of the pack frame, or becomes larger as the plate is positioned at the upper portion of the venting portion.

4. In paragraph 1, The above at least one pair of guide plates includes a pair of first guide plates and a pair of second guide plates, A battery pack in which the pair of first guide plates and the pair of second guide plates are spaced apart from each other in the height direction of the pack frame based on the above venting portion.

5. In paragraph 4, A battery pack wherein the pair of first guide plates are positioned adjacent to the upper portion of the venting portion, and the pair of second guide plates are positioned adjacent to the lower portion of the venting portion.

6. In paragraph 5, The above pair of first guide plates are lifted at a first inclined angle in a direction toward the venting portion based on the lower portion of the pack frame, The above pair of second guide plates are lifted at a second inclined angle in a direction toward the venting portion based on the lower portion of the pack frame, A battery pack wherein the first inclination angle is equal to or greater than the second inclination angle.

7. In paragraph 1, The above venting portion is coupled to a venting hole penetrating the side of the pack frame, The above venting part is a battery pack with a relief valve.

8. In paragraph 7, The above pair of guide plates are arranged so as to have an incline that is raised in the direction toward the venting portion based on the lower part of the pack frame while being placed between the venting holes.

9. In paragraph 7, The above venting hole includes a pair of first venting holes and second venting holes formed at the same position on the side of the pack frame, The above first venting hole is formed on the outer surface of the side of the pack frame, The second venting hole is formed on the inner surface of the side of the pack frame, The above venting part is a battery pack coupled to the first venting hole.

10. In paragraph 8, A battery pack further comprising a filter portion positioned between the venting portion and the first venting hole.

11. A device comprising a battery pack according to paragraph 1.

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