Battery pack and vehicle containing them

Abstract

To provide a battery pack configured such that when a gas is generated inside a battery module, a high temperature gas is discharged to the outside of the battery pack without affecting other adjacent battery modules.SOLUTION: A battery pack according to one aspect of the present invention includes: a pack housing including a first housing space and a second housing space spaced apart from the first housing space; a plurality of first battery modules disposed in the first housing space; a plurality of second battery modules disposed in the second housing space; and a pack cover configured to include a plurality of first independent vent flow paths configured to guide a vent gas generated in each of the plurality of first battery modules to the outside of the pack housing and a plurality of second independent vent flow paths configured to guide a vent gas generated in each of the plurality of second battery modules to the outside of the pack housing.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a battery pack and a vehicle including the same, and more particularly to a battery pack and a vehicle including the same that are configured so that when gas is generated inside a battery module, the high-temperature gas is discharged to the outside of the battery pack without affecting other adjacent battery modules.

[0002] This application claims priority based on Korean Patent Application No. 10-2022-0011080, filed on January 25, 2022, the entire contents of which are incorporated herein by reference in their entirety in the specification and drawings thereof. [Background technology]

[0003] Recently, as the demand for portable electronic products such as notebook PCs, video cameras, and mobile phones has increased sharply and robots, electric vehicles, and other products have been commercialized in earnest, research into high-performance secondary batteries that can be repeatedly charged and discharged has been actively conducted.

[0004] Currently, commercially available secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium secondary batteries. Of these, lithium secondary batteries are attracting attention due to their advantages of almost no memory effect compared to nickel-based secondary batteries, free charging and discharging, very low self-discharge rate, and high energy density.

[0005] Such lithium secondary batteries mainly use lithium-based oxides and carbon materials as the positive and negative electrode active materials, respectively, and include an electrode assembly in which a positive electrode plate and a negative electrode plate, each coated with a positive electrode active material and a negative electrode active material, are arranged with a separator sandwiched therebetween, and an exterior material, i.e., a battery case, that seals and houses the electrode assembly together with an electrolyte.

[0006] Generally, lithium secondary batteries are classified into can-type secondary batteries in which an electrode assembly is housed in a metal can and pouch-type secondary batteries in which an electrode assembly is housed in a pouch made of an aluminum laminate sheet, depending on the shape of the exterior material.

[0007] Recently, secondary batteries have been widely used for driving and storing energy not only in small devices such as portable electronic devices but also in medium- to large-sized devices such as electric vehicles and energy storage systems (ESS). A battery module can be formed by electrically connecting multiple secondary batteries and storing them together inside a module case. Such battery modules are then electrically connected in a small space to form a battery pack in order to increase energy density.

[0008] However, when multiple battery modules are densely packed in a small space, they can be vulnerable to accidents such as fires and explosions. For example, if a thermal event such as thermal runaway occurs in one battery module, high-temperature gas may be emitted from the battery module. If this gas cannot be properly vented to the outside of the battery pack, the thermal event generated in one battery module may spread to other battery modules installed inside the battery pack, causing a chain reaction. This can also increase the internal pressure of the battery pack, potentially leading to an explosion. If a battery pack explodes, the explosion pressure can not only cause significant damage to surrounding devices and users, but the damage can also spread over a larger area and at a larger speed. Therefore, there is a need to develop a battery pack with a structure that, if a malfunction occurs in one battery module and gas is emitted, can safely vent the high-temperature gas to the outside of the battery pack without affecting other adjacent battery modules. Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been made in consideration of the above-mentioned problems, and aims to enable high-temperature vent gas that is released when a thermal event occurs in some battery modules to be safely discharged to the outside of the battery pack without affecting the other battery modules inside the battery pack.

[0010] Another object of the present invention is to add a vent flow path forming structure to a conventional battery pack to control the flow of vent gas in a desired direction.

[0011] However, the technical problems that the present invention aims to solve are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description of the invention. [Means for solving the problem]

[0012] To achieve the above object, according to one aspect of the present invention, a battery pack may include: a pack housing having a first accommodating space and a second accommodating space spaced apart from the first accommodating space; a plurality of first battery modules disposed in the first accommodating space; a plurality of second battery modules disposed in the second accommodating space; and a pack cover configured to include a plurality of first independent vent channels configured to guide vent gas generated in each of the plurality of first battery modules to an outside of the pack housing and a plurality of second independent vent channels configured to guide vent gas generated in each of the plurality of second battery modules to an outside of the pack housing.

[0013] The plurality of first independent vent channels may include a first side vent channel that guides vent gas generated in each of the plurality of first battery modules in a first direction toward the second accommodating space, and a first center vent channel that communicates with the first side vent channel and guides vent gas generated in each of the plurality of first battery modules in a second direction perpendicular to the first direction.

[0014] The plurality of second independent vent channels may include a second side vent channel that guides vent gas generated in each of the plurality of second battery modules in a third direction toward the first accommodating space, and a second center vent channel that communicates with the second side vent channel and guides vent gas generated in each of the plurality of second battery modules in a fourth direction perpendicular to the third direction.

[0015] The pack cover may include guide portions respectively provided at positions corresponding to gaps between the plurality of first independent vent channels adjacent to each other and at positions corresponding to gaps between the plurality of second independent vent channels adjacent to each other.

[0016] The guide portion may be configured to block communication between adjacent first independent vent channels and between adjacent second independent vent channels.

[0017] The pack cover may include guide portions provided at positions corresponding to between adjacent first independent vent flow paths and between adjacent second independent vent flow paths, respectively; a cover plate configured to cover the storage space of the pack housing; and flow path covers provided at positions corresponding to between the first storage space and the first center vent flow path and between the second storage space and the second center vent flow path, respectively, and configured to attach the guide portions.

[0018] The first and second independent vent passages may each have a groove shape formed on an inner surface of the cover plate.

[0019] The battery pack may include first partition walls disposed at positions corresponding to the gaps between the first battery modules adjacent to each other and the second battery modules adjacent to each other.

[0020] The battery pack may include a second partition disposed at a position corresponding to the first accommodating space and the second accommodating space.

[0021] The first partition wall may be configured to block movement of vent gas between the respective storage spaces of the adjacent first battery modules and between the respective storage spaces of the adjacent second battery modules.

[0022] The second partition wall may be configured to block movement of vent gas between the first accommodating space and the second accommodating space.

[0023] The battery pack may include a sealing member at least one of between the first partition and the pack cover and between the first partition and the pack housing.

[0024] The pack housing may include a gas collecting space formed at least at one side or the other side.

[0025] The battery pack may include a vent device configured to be able to discharge vent gas in the gas collection space to the outside of the pack housing.

[0026] To achieve the above object, a vehicle according to an embodiment of the present invention includes a battery pack according to the present invention. [Effects of the Invention]

[0027] According to one aspect of the present invention, high-temperature vent gas that is released when a thermal event occurs in some battery modules can be safely discharged to the outside of the battery pack without affecting other battery modules inside the battery pack.

[0028] According to another aspect of the present invention, a pack cover, which is normally used only to cover the pack housing, can be provided with a vent passage to add the function of controlling the flow of vent gas.

[0029] According to yet another aspect of the present invention, vent gas generated in each battery module can be discharged at different times by being discharged through vent passages having different lengths.

[0030] According to another aspect of the present invention, by applying a channel cover, it is possible to prevent the vent gas generated in each of the plurality of battery modules from moving downward and affecting other adjacent battery modules while the vent gas is being discharged through the first center vent channel and the second center vent channel.

[0031] According to yet another aspect of the present invention, the storage spaces of adjacent first battery modules and the storage spaces of adjacent second battery modules are structurally isolated from each other by partition walls, thereby preventing vent gas generated in some battery modules from migrating toward adjacent battery modules.

[0032] According to yet another aspect of the present invention, the first partition wall and / or the second partition wall has a substantially beam-like shape with an internal space therein, which not only improves the rigidity of the battery pack and prevents vent gas from moving between adjacent storage spaces, but also reduces the weight of the battery pack.

[0033] According to a further aspect of the present invention, the effect of preventing the migration of vent gas into the gap between the partition and the pack cover and / or pack housing is further improved.

[0034] According to another aspect of the present invention, when a large amount of gas is generated at once and the internal pressure of the battery pack increases, the internal pressure of the battery pack can be quickly reduced by the gas collection space. The gas can be discharged in a desired direction by the vent device, and by increasing the capacity of the vent device or by increasing the number of vent devices, the gas can be discharged more quickly and smoothly even if a large amount of vent gas is generated instantaneously.

[0035] However, the technical problems that the present invention aims to solve are not limited to the above-mentioned effects, and other problems of the present invention that are not mentioned will be clearly understood by those skilled in the art from the following description of the invention.

[0036] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention, serve to further understand the technical concept of the present invention, so the present invention should not be interpreted as being limited to the matters described in the drawings. [Brief explanation of the drawings]

[0037] [Figure 1] 1 is an exploded perspective view showing a battery pack according to the present invention; [Figure 2] 1 is a perspective view showing the appearance of a battery pack according to the present invention; [Figure 3] 1 is a diagram showing a battery module included in a battery pack according to the present invention; [Figure 4] 1 is a diagram showing a battery module included in a battery pack according to the present invention; [Figure 5] FIG. 2 is a diagram showing the movement path of vent gas generated in each battery module included in the battery pack according to the present invention. [Figure 6] FIG. 2 is a diagram showing the movement path of vent gas generated in each battery module included in the battery pack according to the present invention. [Figure 7] FIG. 2 is a diagram showing the movement path of vent gas generated in each battery module included in the battery pack according to the present invention. [Figure 8] FIG. 2 is a diagram showing the movement path of vent gas generated in each battery module included in the battery pack according to the present invention. [Figure 9] 1 is a diagram showing a pack cover included in a battery pack according to the present invention. FIG. [Figure 10] 1 is a diagram showing a pack cover included in a battery pack according to the present invention. FIG. [Figure 11]FIG. 11 is an enlarged view of part B in FIG. [Figure 12] 1 is a diagram showing a partition wall included in a battery pack according to the present invention; [Figure 13] 3 is a cross-sectional view schematically showing an exemplary form of a cross section taken along line AA' in FIG. 2. FIG. [Figure 14] 1A and 1B illustrate a collection space and a vent device included in a battery pack according to the present invention. [Figure 15] 1 shows a motor vehicle according to the invention; DETAILED DESCRIPTION OF THE INVENTION

[0038] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The drawings attached to this specification are intended to illustrate preferred embodiments of the present invention and, together with the detailed description of the invention below, serve to further understand the technical concepts of the present invention. Therefore, the present invention should not be interpreted as being limited to only the details shown in such drawings. The same reference numerals refer to the same components. Furthermore, in the drawings, thicknesses, ratios, and dimensions of components may be exaggerated to effectively explain the technical content.

[0039] The terms and words used in this specification and claims should not be interpreted in a limited way to their ordinary or dictionary meanings, but should be interpreted in a way that corresponds to the technical idea of ​​the present invention, in accordance with the principle that the inventor himself can appropriately define the concept of the term in order to best explain the invention.

[0040] Although terms indicating directions such as up, down, left, right, front, and rear are used in this specification, it will be obvious to those skilled in the art that these terms indicate relative positions and are used only for convenience of explanation, and may vary depending on the position of the object in question, the position of the observer, etc.

[0041] Therefore, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiment of the present invention and do not represent the entire technical idea of ​​the present invention, and that there may be various equivalents and modifications that can be substituted for them at the time of this application.

[0042] Fig. 1 is an exploded perspective view showing a battery pack according to the present invention, and Fig. 2 is a perspective view showing the appearance of the battery pack according to the present invention.

[0043] 1 and 2, a battery pack 10 according to the present invention includes a pack housing 100, a first battery module 210, a second battery module 220, and a pack cover 300.

[0044] The pack housing 100 may include a first accommodating space 110 and a second accommodating space 120 spaced apart from the first accommodating space 110. However, the accommodating spaces included in the pack housing 100 are not limited to the first accommodating space 110 and the second accommodating space 120.

[0045] The first battery module 210 may be disposed in the first accommodating space 110. There may be a plurality of first battery modules 210. The second battery module 220 may be disposed in the second accommodating space 120. There may be a plurality of second battery modules 220. For example, as shown in FIG. 1 , four first battery modules 210 may be disposed in the first accommodating space 110, and four second battery modules 220 may be disposed in the second accommodating space 120.

[0046] 3 and 4 are diagrams showing a battery module included in a battery pack according to the present invention.

[0047] Referring to FIG. 3 , the battery module 200 may include a battery cell 201. A plurality of battery cells 201 may be provided. The battery cell 201 may refer to a secondary battery. The battery cell 201 may include an electrode assembly, an electrolyte, a battery case that houses the electrode assembly and the electrolyte, and a pair of electrode leads that are connected to the electrode assembly and extend to the outside of the battery case. The battery cell 201 may be, for example, a pouch-type secondary battery. However, other types of secondary batteries, such as cylindrical batteries and prismatic batteries, may also be used as the battery cell 201 of the present invention.

[0048] When a plurality of battery cells 201 are provided, the plurality of battery cells 201 may be electrically connected. The battery module 200 may further include a bus bar frame assembly 202 for electrically connecting the plurality of battery cells 201. For example, a pair of bus bar frame assemblies 202 may be provided. In this case, the pair of bus bar frame assemblies 202 may be coupled to one side and the other side of the battery cell 201 in the longitudinal direction (the direction parallel to the X-axis), respectively.

[0049] 4, the battery module may further include a module case 203. The module case 203 may be configured to house at least one battery cell 201. The module case 203 may include a vent hole 203a. When vent gas is generated from the battery cell 201 housed in the internal space, the vent hole 203a may be configured to allow the generated vent gas to be discharged from the inside of the module case 203 to the outside.

[0050] 5 to 8 are diagrams showing the movement path of vent gas generated in each battery module included in the battery pack according to the present invention.

[0051] 5-8 in conjunction with FIG. 1, the pack cover 300 may include a plurality of first independent vent passages 310 and a plurality of second independent vent passages 320.

[0052] The plurality of first independent vent channels 310 may be configured to guide vent gas generated in each of the plurality of first battery modules 210 to the outside of the pack housing 100. The plurality of second independent vent channels 320 may be configured to guide vent gas generated in each of the plurality of second battery modules 220 to the outside of the pack housing 100. The pack cover 300 may be combined with the pack housing 100 to form vent channels between the top of the battery modules 200 and the inner surface of the pack cover 300.

[0053] 5 to 8 show the movement paths of vent gas generated in each battery module in the structure of the battery pack 10 according to various embodiments of the present invention. The vent gas generated in each battery module may be discharged to the outside of the battery pack 10 through independent vent paths. The vent gas generated in each battery module may be discharged through a longer vent path as the vent gas generated in the battery module is farther from the position where the vent gas is discharged.

[0054] According to this configuration of the present invention, the pack cover 300, which is normally used only to cover the pack housing 100, can be provided with a vent passageway to control the flow of vent gas. Specifically, according to this configuration of the present invention, when a thermal event occurs in each battery module, flames and vent gases can be discharged along the first and second independent vent passageways 310 and 320 formed between the top of the battery module and the inner surface of the pack cover 300, thereby significantly reducing the possibility of the thermal event spreading to adjacent battery modules 200. Furthermore, as the vent gas moves, its temperature decreases, and even if a flame occurs along with the vent gas, the intensity of the flame can weaken as it moves along the vent passageway. This eliminates or reduces damage that may occur when high-temperature vent gas and flames are ejected to the outside. In particular, the vent gases generated in each of the battery modules 200 are independent and do not directly communicate with each other, and can be discharged at different times by being discharged through vent passageways of different lengths.

[0055] 5 to 8, the first independent vent channel 310 may include a first side vent channel 311 and a first center vent channel 312. The second independent vent channel 320 may include a second side vent channel 321 and a second center vent channel 322.

[0056] The first side vent channel 311 may guide the vent gas generated in each of the first battery modules 210 in a first direction (positive direction of the X-axis) toward the second accommodating space 120. The second side vent channel 321 may guide the vent gas generated in each of the second battery modules 220 in a third direction (negative direction of the X-axis) toward the first accommodating space 110.

[0057] The first center vent channel 312 communicates with the first side vent channel 311 and may be configured to guide vent gas generated in each of the plurality of first battery modules 210 in a second direction (positive Y-axis direction) perpendicular to the first direction (positive X-axis direction). The second center vent channel 322 communicates with the second side vent channel 321 and may be configured to guide vent gas generated in each of the plurality of second battery modules 220 in a fourth direction (negative Y-axis direction) perpendicular to the third direction (negative X-axis direction).

[0058] 9 and 10 are views showing a pack cover included in a battery pack according to the present invention, and Fig. 11 is an enlarged view of part B of Fig. 10.

[0059] 9 and 10, the pack cover 300 may include a guide portion 340.

[0060] The guide portions 340 may be provided at positions corresponding to the gaps between adjacent first independent vent passages 310 and the gaps between adjacent second independent vent passages 320. The guide portions 340 may be configured to block communication between adjacent first independent vent passages 310 and between adjacent second independent vent passages 320.

[0061] According to this configuration of the present invention, vent gas generated in each of the battery modules 200 can be discharged through independent vent passages, thereby minimizing the impact on other battery modules when a thermal event occurs in each battery module.

[0062] 9-11, the pack cover 300 may include a cover plate 330 and / or a flow path cover 350.

[0063] The cover plate 330 may be configured to cover the receiving space of the pack housing 100. A guide portion 340 may be coupled to an inner surface of the cover plate 330. The first independent vent passage 310 and the second independent vent passage 320 may be spaces surrounded by the cover plate 330 and the guide portion 340. The first independent vent passage 310 and the second independent vent passage 320 may each have the form of a groove G formed on the inner surface of the cover plate 330. The groove G may be the first independent vent passage 310 or the second independent vent passage 320. There may be a plurality of grooves G for forming the first independent vent passage 310. There may be a plurality of grooves G for forming the second independent vent passage 320.

[0064] The channel cover 350 may be provided at a corresponding position between the first accommodating space 110 and the first center vent channel 312 and between the second accommodating space 120 and the second center vent channel 322. The channel cover 350 may be configured to have the guide unit 340 attached thereto. The channel cover 350 may be coupled to a lower end of the guide unit 340. The first center vent channel 312 and the second center vent channel 322 may be spaces defined by the cover plate 330, the guide unit 340, and the channel cover 350.

[0065] At least some of the cover plate 330, the guide portion 340, and the flow path cover 350 may be configured in an integrated form, and the present invention is not necessarily limited to the case where each component is manufactured separately and then combined.

[0066] According to this configuration of the present invention, vent gas generated in each of the plurality of battery modules 200 can flow into the first independent vent channel 310 and the second independent vent channel 320 from the remaining areas excluding the area corresponding to the channel cover 350. In addition, application of the channel cover 350 can prevent the vent gas generated in each of the plurality of battery modules 200 from moving downward and affecting other adjacent battery modules while the vent gas is being discharged through the first center vent channel 312 and the second center vent channel 322.

[0067] FIG. 12 is a diagram showing a partition wall included in a battery pack according to the present invention.

[0068] Referring to FIG. 12, the battery pack 10 may include a first partition 400a and / or a second partition 400b.

[0069] The first partition walls 400a may be disposed at positions corresponding to the gaps between adjacent first battery modules 210 and between adjacent second battery modules 220, respectively.

[0070] The second partition 400b may be configured to block the movement of vent gas between the first accommodating space 110 and the second accommodating space 120. The second partition 400b may be disposed at a corresponding position between the first accommodating space 110 and the second accommodating space 120. The second partition 400b may be coupled to the pack cover 300 and / or the pack housing 100. The coupling may be performed by welding or bolting. The second partition 400b may have a substantially beam-like shape with an open interior. The space formed within the second partition 400b may be used as a passage for wiring connecting the battery modules. The wiring may be protected from physical impact by the second partition 400b.

[0071] According to this configuration of the present invention, the partitions may structurally isolate the storage spaces of adjacent first battery modules 210 and the storage spaces of adjacent second battery modules 220. As a result, vent gas generated in each battery module moves only through the first independent vent flow path 310 and the second independent vent flow path 320, rather than moving toward the adjacent battery module. During this movement, the temperature of the vent gas decreases, which may weaken the intensity of the flame. When the first partition 400a and / or the second partition 400b have a substantially beam-like shape with an internal space, the application of the first partition 400a and / or the second partition 400b not only improves the rigidity of the battery pack 10 and blocks the movement of vent gas between adjacent storage spaces, but also reduces the weight of the battery pack 10.

[0072] FIG. 13 is a cross-sectional view schematically showing an exemplary form of a cross section taken along line AA' in FIG.

[0073] 13 , the battery pack 10 may include a sealing member 500. The sealing member 500 may be provided in at least one of a position between the first partition wall 400a and the pack cover 300 and a position between the first partition wall 400a and the pack housing 100. The sealing member 500 may be provided in at least one of a position between the second partition wall 400b and the pack cover 300 and a position between the second partition wall 400b and the pack housing 100. The sealing member 500 may be configured to at least partially surround the coupling portions of the pack cover 300 and / or the pack housing 100 with the partition walls 400a, 400b.

[0074] According to this configuration of the present invention, the effect of preventing vent gas from moving into the gaps between the pack cover 300 and / or the pack housing 100 and the partition walls 400a, 400b can be further improved.

[0075] FIG. 14 is a diagram illustrating a collection space and vent device included in a battery pack according to the present invention.

[0076] Referring to FIG. 14, the battery pack 10 may include a gas collection space 600 and / or a vent device 700.

[0077] The gas collecting space 600 may be provided at at least one location on one side and the other side of the pack housing 100. Vent gas generated in each battery module moves through the first independent vent passage 310 and the second independent vent passage 320 and collects in the gas collecting space 600. For example, the gas collecting space 600 may be provided at an end in the longitudinal direction (positive direction of the Y axis) of the pack housing 100. However, the present invention is not limited to the shape, position, and number of the gas collecting spaces 600 shown in FIG. 14.

[0078] The vent device 700 may be configured to allow the vent gas in the gas collecting space 600 to be discharged to the outside of the pack housing 100. The vent device 700 may be in the form of a simple hole that penetrates the pack housing 100. The vent device 700 may be not only in a completely open form, but may also be a specific device that is closed in a steady state and can be opened in response to changes in pressure, temperature, etc. The vent device 700 may be, for example, a one-way valve.

[0079] According to this configuration of the present invention, when a large amount of gas is generated at once and the internal pressure of the battery pack 10 increases, the internal pressure of the battery pack 10 can be quickly reduced by the gas collecting space 600. The gas can be discharged in the intended direction by the vent device 700, and by increasing the capacity that the vent device 700 can handle or by increasing the number of vent devices 700, the gas can be discharged more quickly and smoothly even if a large amount of vent gas is generated instantaneously.

[0080] FIG. 15 shows a vehicle according to the present invention.

[0081] 15, the battery pack 10 is applicable to a vehicle 1 such as an electric vehicle 1 or a hybrid vehicle 1. That is, the vehicle 1 according to the present invention may include the battery pack 10 according to the present invention. The vehicle 1 according to the present invention may further include various other components included in the vehicle 1 in addition to the battery pack 10. For example, the vehicle 1 according to the present invention may further include a vehicle body, a motor, a control device such as an ECU (electronic control unit), etc. in addition to the battery pack 10 according to the present invention.

[0082] While the present invention has been described above with reference to the accompanying drawings, focusing on the preferred embodiment, it will be apparent to those skilled in the art that various modifications may be made from such description without departing from the scope of the present invention. Therefore, the scope of the present invention should be construed by the claims written to include such various modifications. [Explanation of symbols]

[0083] 1. Automobiles 10 Battery Pack 100 pack housing 110 First Storage Space 120 Second Storage Space 200 Battery Module 201 battery cells 202 Busbar frame assembly 203 Module Case 203a Vent Hole 210 First Battery Module 220 Second Battery Module 300 pack covers 310 First independent vent channel 311 First side vent channel 312 First center vent channel 320 Second independent vent channel 321 Second side vent channel 322 Second center vent channel 330 Cover Plate 340 Guide part 350 Flow path cover 400a 1st bulkhead 400b 2nd bulkhead 500 Sealing material 600 Gas collection space 700 Vent Device G groove

Claims

1. a pack housing including a first storage space and a second storage space spaced apart from the first storage space; a plurality of first battery modules disposed in the first accommodating space; a plurality of second battery modules disposed in the second accommodating space; a pack cover configured to have a plurality of first independent vent flow paths that guide vent gas generated in each of the plurality of first battery modules to the outside of the pack housing and a plurality of second independent vent flow paths that guide vent gas generated in each of the plurality of second battery modules to the outside of the pack housing.

2. The plurality of first independent vent passages include: a first side vent passage configured to guide vent gas generated from each of the plurality of first battery modules in a first direction toward the second accommodating space; a first center vent passage communicating with the first side vent passage and guiding vent gas generated in each of the plurality of first battery modules in a second direction perpendicular to the first direction.

3. The plurality of second independent vent passages include: a second side vent passage configured to guide vent gas generated from each of the second battery modules in a third direction toward the first accommodating space; a second center vent passage communicating with the second side vent passage and guiding vent gas generated in each of the plurality of second battery modules in a fourth direction perpendicular to the third direction.

4. The pack cover is 2. The battery pack of claim 1, further comprising: guide portions provided at positions corresponding to gaps between the plurality of first independent vent channels adjacent to each other and at positions corresponding to gaps between the plurality of second independent vent channels adjacent to each other.

5. The guide portion is The battery pack according to claim 4 , wherein the first independent vent passages are configured to block communication between adjacent first independent vent passages and communication between adjacent second independent vent passages.

6. The pack cover is guide portions provided at positions corresponding to the gaps between the plurality of first independent vent channels adjacent to each other and at positions corresponding to the gaps between the plurality of second independent vent channels adjacent to each other; a cover plate for covering the storage space of the pack housing; 4. The battery pack of claim 3, further comprising: a channel cover provided at a position corresponding to a portion between the first accommodating space and the first center vent channel and a portion between the second accommodating space and the second center vent channel, the channel cover being configured to have the guide portion attached thereto.

7. The battery pack of claim 6, wherein the first independent vent passage and the second independent vent passage each have a groove shape formed on an inner surface of the cover plate.

8. The battery pack 2. The battery pack according to claim 1, further comprising: first partitions disposed at positions corresponding to the gaps between adjacent first battery modules and the gaps between adjacent second battery modules, respectively.

9. The battery pack The battery pack according to claim 1 , further comprising a second partition wall disposed at a position corresponding to the first and second accommodating spaces.

10. The first partition wall is 9. The battery pack according to claim 8, wherein the battery pack is configured to block movement of vent gas between the respective accommodation spaces of the first battery modules adjacent to each other and movement of vent gas between the respective accommodation spaces of the second battery modules adjacent to each other.

11. The second partition wall is The battery pack according to claim 9, wherein the battery pack is configured to block movement of vent gas between the first accommodating space and the second accommodating space.

12. The battery pack The battery pack according to claim 8 , further comprising a sealing member at least one of between the first partition wall and the pack cover and between the first partition wall and the pack housing.

13. The pack housing includes: The battery pack according to claim 1 , further comprising a gas collection space formed at least at one of one side and the other side.

14. The battery pack The battery pack according to claim 13, further comprising a vent device configured to be able to discharge vent gas in the gas collecting space to the outside of the pack housing.

15. A motor vehicle comprising a battery pack according to any one of claims 1 to 14.

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