Battery pack and device including the same

Abstract

A battery pack according to one embodiment of the present disclosure comprises: a battery pack frame to which a plurality of battery modules are mounted; an inner frame located inside the pack frame and separating the plurality of battery modules from each other; and at least one lift portion located between the inner frame and an upper portion of the battery pack frame, where the at least one lift portion is deformed according to a temperature inside the battery pack frame.

Description

Technical Field

[0001] The present disclosure relates to a battery pack and a device including the same, and more particularly, to a battery pack that can maintain a battery pack structure when a thermal runaway or heat propagation phenomenon occurs inside the battery pack and a device including the same. Background Art

[0002] Due to the characteristics of secondary batteries that are easily applicable to various products and electrical properties such as high energy density, they are often used not only in portable devices but also in electric vehicles or hybrid electric vehicles and energy storage systems propelled by electric motors. Such secondary batteries have gained attention due to their main advantages of significantly reducing the use of fossil fuels and not generating byproducts when using energy, making them new eco-friendly and energy-saving energy sources.

[0003] Currently commercialized secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries and lithium secondary batteries. Among them, lithium secondary batteries have attracted much attention because they have advantages such as having almost no memory effect compared to nickel-based secondary batteries and thus being freely charged and discharged and having very low self-discharge rates and high energy density.

[0004] Generally, lithium secondary batteries may be classified into cylindrical or prismatic secondary batteries in which an electrode assembly is embedded in a metal can and pouch-type secondary batteries in which an electrode assembly is embedded in a pouch made of an aluminum laminate sheet, based on the shape of an external material.

[0005] Recently, as the demand for large-capacity secondary battery structures (including the use of secondary batteries as energy storage sources) continues to rise, there is a growing demand for battery packs of medium and large module structures as components of battery modules in which multiple secondary batteries are connected in series or in parallel. In such a battery module, multiple battery cells are connected in series or in parallel to each other to form a battery cell stack, thereby improving capacity and output. In addition, multiple battery modules can be installed together with various control and protection systems such as BMS (battery management system) and cooling system to form a battery pack.

[0006] The battery pack is configured to have a structure combining a plurality of battery modules. In the event that overvoltage, overcurrent or overheating is applied to some battery modules, the safety and operating efficiency of the battery pack are of serious concern. Specifically, in order to improve the mileage, the capacity of the battery pack tends to be gradually increased, and as the energy inside the battery pack is thus increased, it is necessary to design a structure that meets the enhanced safety standards and ensures the safety of the vehicle and the driver.

[0007] At this point, when thermal runaway inside the battery pack and heat propagation between battery cells occur, the components of the battery pack may be deformed due to the high-temperature gases and particles inside the battery pack. Specifically, in such a high-temperature environment, the structure may change, such as the cover of the upper battery pack frame of the battery pack drooping in the direction of gravity, which may cause the problem of the upper exhaust channel of the battery pack being blocked. If the upper exhaust channel of the battery pack is blocked like this, there is a problem that the discharge of the high-temperature gases and particles inside the battery pack is delayed, which may cause the battery pack to explode and catch fire. Therefore, in order to prevent this situation in advance, there is an increasing need to develop a battery pack that can minimize damage by preventing the upper exhaust channel of the battery pack from being blocked even when thermal runaway or heat propagation occurs inside the battery pack. Summary of the invention

[0008] Technical issues

[0009] An object of the present disclosure is to provide a battery pack that can maintain a battery pack structure when a thermal runaway or heat propagation phenomenon occurs inside the battery pack and a device including the battery pack.

[0010] The objects of the present disclosure are not limited to the above-mentioned objects, and other objects not mentioned herein should be clearly understood by those skilled in the art from the following detailed description and accompanying drawings.

[0011] Technical Solution

[0012] According to one embodiment of the present disclosure, a battery pack is provided, comprising: a battery pack frame, to which a plurality of battery modules are mounted; an inner frame, which is located inside the battery pack frame and separates the plurality of battery modules from each other; and at least one lifting portion, which is located between the inner frame and an upper portion of the battery pack frame, wherein the at least one lifting portion is deformed according to the temperature inside the battery pack frame.

[0013] The lifting portion may include a lifting member bent in a direction toward an upper portion of the pack frame when a temperature inside the pack frame increases.

[0014] The lifting portion may further include at least one fixing member fixing the lifting member to the inner frame.

[0015] The fixing member is a bolting member, and the lifting member and the inner frame may be bolted together.

[0016] The lifting member may be configured such that a portion located between portions fixed by the fixing member is bent in a direction toward an upper portion of the battery pack frame.

[0017] The lifting member may extend in a width direction of the battery module.

[0018] The inner frame includes at least one horizontal beam extending in a width direction of the battery module and at least two vertical beams extending in a longitudinal direction of the battery module, and the at least one lifting portion may extend in the same direction as the horizontal beam.

[0019] The at least one lifting portion includes a pair of lifting portions positioned to be spaced apart from each other, and the pair of lifting portions may be located between the horizontal beam and one side surface of the lower battery pack frame facing the horizontal beam.

[0020] The at least one lifting portion is located on the at least two vertical beams, and the fixing members may fix the lifting members to the at least two vertical beams, respectively.

[0021] The lifting member may have a shape in which an upper portion of the lifting member is formed of relatively more material than a lower portion of the lifting member.

[0022] The lifting member may have a cross section in one of a V-shape, a U-shape, a T-shape, an inverted triangle, and a semicircle.

[0023] The lifting member may be made of steel material.

[0024] According to another embodiment of the present disclosure, there is provided a device including the above-mentioned battery pack.

[0025] Beneficial Effects

[0026] According to an embodiment, the battery pack and a device including the same of the present disclosure include a lifting member between an inner frame of the battery pack and an upper pack frame, thereby being able to maintain the structure of the battery pack when a thermal runaway or heat propagation phenomenon occurs inside the battery pack.

[0027] The effects of the present disclosure are not limited to the above-mentioned effects, and additional other effects not mentioned above will be clearly understood by those skilled in the art from the description of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a perspective view showing a battery pack according to an embodiment of the present disclosure;

[0029] Figure 2 yes Figure 1 An exploded perspective view of components included in a battery pack;

[0030] Figure 3 It is shown from Figure 1A three-dimensional view of a battery pack with an upper battery pack frame and a plurality of battery modules removed;

[0031] Figure 4 It is shown Figure 1 A diagram of the shape of a lifting member included in a battery pack;

[0032] Figure 5 It is shown along Figure 3 A diagram of a portion of a cross section cut along the aa′ axis; and

[0033] Figure 6 and Figure 7 It is shown along Figure 3 FIG. 1 is a diagram of a portion of a cross section cut along the bb′ axis. DETAILED DESCRIPTION

[0034] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily practice them. The present disclosure can be modified in various different ways and is not limited to the embodiments set forth herein.

[0035] To clearly describe the present disclosure, parts irrelevant to the description will be omitted, and the same reference numerals designate the same elements throughout the description.

[0036] In addition, in the drawings, for the convenience of description, the size and thickness of each element are arbitrarily illustrated, and the present disclosure is not necessarily limited to those illustrated in the drawings. In the drawings, for the sake of clarity, the thickness of layers, regions, etc. are exaggerated. In the drawings, for the convenience of description, the thickness of components and regions is exaggerated.

[0037] In addition, throughout the description, when a part is referred to as “including” or “comprising” a certain component, it means that the part may further include other components without excluding the other components, unless otherwise specified.

[0038] In addition, throughout the description, when referred to as “plane”, this means that the target portion is viewed from the upper side, and when referred to as “cross section”, this means that the target portion is viewed from the side of a cross section cut vertically.

[0039] Now, a battery pack according to an embodiment of the present disclosure will be described.

[0040] Figure 1 is a perspective view showing a battery pack according to an embodiment of the present disclosure. Figure 2 yes Figure 1 An exploded perspective view of components included in a battery pack. Figure 3 It is shown from Figure 1 A three-dimensional view of the structure of a battery pack with an upper battery pack frame and multiple battery modules removed.

[0041] Reference Figure 1 and Figure 2 , a battery pack according to an embodiment of the present disclosure includes pack frames 1100 and 1200 on which a plurality of battery modules are mounted, and an inner frame 1300 located inside the pack frames 1100 and 1200 and partitioning the plurality of battery modules 100 from each other.

[0042] Here, the battery pack frames 1100 and 1200 may include a lower battery pack frame 1100 on which a plurality of battery modules 100 are mounted, and an upper battery pack frame 1200 located on an upper portion of the battery module 100. More specifically, in a state in which a plurality of battery modules 100 are mounted on the lower battery pack frame 1100, the upper battery pack frame 1200 may cover an upper portion of the lower battery pack frame 1100. Here, the lower battery pack frame 1100 and the upper battery pack frame 1200 are coupled to each other by a method such as welding or bonding, thereby being able to seal the interior of the battery pack 1000.

[0043] Reference Figures 1 to 3 , the lower pack frame 1100 may include an outer frame 1110 extending from the bottom surfaces of the pack frames 1100 and 1200 toward the upper pack frame 1200 and a pack bottom 1150 facing the lower surface of the battery module 100. That is, the outer frame 1110 may extend from the pack bottom 1150 toward the upper pack frame 1200.

[0044] In the lower pack frame 1100 , the outer frame 1110 and the pack bottom 1150 may be integrated with each other or fixed to each other by a separate fastening method such as welding or bonding.

[0045] In one example, the outer frame 1110 can be made of a heat insulating member. In another example, the outer frame 1110 can be composed of an aluminum extrusion structure. In another example, the outer frame 1110 is made of a different metal bonding material such as a cladding metal, or can be a structure including an insulating material such as an aerogel or EPP (expanded polypropylene) foam. In another example, the outer frame 1110 can be a structure including a material such as silicon foam, mica or glass fiber mat. However, it is not limited to this, as long as the outer frame 1110 is made of a heat insulating material having a predetermined rigidity, the outer frame 1110 can be used without restriction.

[0046] In addition, the lower pack frame 1100 is located inside the outer frame 1110 and may include an inner frame 1300 extending from the pack bottom 1150 to the upper pack frame 1200. More specifically, the inner frame 1300 includes at least one horizontal beam 1310 and at least two vertical beams 1350.

[0047] The horizontal beam 1310 may extend along the width direction (x-axis direction) of the battery module 100. In addition, the vertical beam 1350 is located between one side portion of the outer frame 1110 and the horizontal beam 1310, and may extend along the longitudinal direction (y-axis direction) of the battery module 100. Here, one side surface of the outer frame 1110 may mean a side surface of the outer frame 1110 facing the horizontal beam 1310.

[0048] The plurality of battery modules 100 may be separated from each other by at least one horizontal beam 1310 and at least two vertical beams 1350. That is, the internal spaces separated by at least one horizontal beam 1310 and at least two vertical beams 1350 may be module regions where the battery modules 100 are mounted, and may be regions where other electrical components other than the battery modules 100 are mounted, respectively.

[0049] However, the configuration of the inner frame 1300 is not limited thereto, and as long as it is a shape that can mount a plurality of battery modules 100 while separating them from each other, it can be included in the present embodiment. In addition, the length, interval, and number of at least one horizontal beam 1310 and at least two vertical beams 1350 can be adjusted according to the size and arrangement of the battery module 100.

[0050] In one example, the inner frame 1300 can be made of a heat insulating member. In another example, the inner frame 1300 can be composed of an aluminum extrusion structure. In another example, the inner frame 1300 is made of a different metal bonding material such as a cladding metal, or can be a structure including an insulating material such as an aerogel or EPP (expanded polypropylene) foam. In another example, the inner frame 1300 can be a structure including a material such as silicon foam, mica or glass fiber mat. However, it is not limited to this, as long as the inner frame 1300 is made of a heat insulating material having a predetermined rigidity, the inner frame 1300 can be used without restriction.

[0051] Therefore, in the battery pack 1000 according to the present embodiment, the lower battery pack frame 1100 can be positioned so that the multiple battery modules 100 are separated from each other by the outer frame 1110 and the inner frame 1300, and even if a fire occurs in some of the multiple battery modules 100, heat propagation between adjacent battery modules 100 can be effectively prevented.

[0052] Reference Figure 2 , the battery pack 1000 according to the present embodiment may include a plurality of battery modules 100. Here, the battery modules 100 may be mounted on the lower battery pack frame 1100. More specifically, as Figure 2 and Figure 3As shown in FIG. 1 , a plurality of battery modules 100 may be respectively mounted to regions partitioned by an outer frame 1110 and an inner frame 1300. However, the arrangement direction of the battery modules 100 is not limited thereto and may be appropriately changed as needed.

[0053] In one example, the battery module 100 includes a battery cell stack (not shown) in which a plurality of battery cells are stacked, and a module frame (not shown) accommodating the battery cell stack (not shown).

[0054] The battery cell is preferably a pouch-type battery cell. In one example, the battery cell can be made by accommodating the electrode assembly in a pouch shell of a laminate sheet including a resin layer and an inner layer, and then heat-sealing the sealing portion of the pouch shell. The battery cell can be formed into a rectangular sheet structure. The number of battery cells can be configured as a plurality, and a plurality of battery cells can be stacked to be electrically connected to each other, thereby forming a battery cell stack (not shown). Here, the number of battery cells forming the battery cell stack (not shown) can be adjusted according to the situation.

[0055] The module frame (not shown) may include an upper cover and a U-shaped frame. Here, the U-shaped frame may include a bottom and two side surface portions extending upward from both ends of the bottom. At this time, the bottom may cover the lower surface of the battery cell stack (not shown), and the side surface portion may cover the side surface of the battery cell stack (not shown). The upper cover may be connected to the U-shaped frame by welding, etc. in a state where corresponding corners are in contact with each other, thereby forming a structure covering the top, bottom, left and right parts of the battery cell stack (not shown). For this purpose, the upper cover and the U-shaped frame may be made of a metal material having a predetermined strength.

[0056] 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 single frame structure. Here, the single frame may be in the form of a metal plate material in which the upper surface, the lower surface, and the two side surfaces are integrated. The single frame may be made by extrusion molding. In addition, the structure of the module frame (not shown) may be set in the form of an L-shaped frame in addition to being set in the form of a single frame or a U-shaped frame, and the structure of the module frame may be set in various structures not described in the above examples.

[0057] In addition, the battery module 100 may further include a bus bar frame located on the front and rear surfaces of the battery cell stack (not shown) and an end plate covering the bus bar frame. Here, a bus bar (not shown) electrically connected to the battery cell stack (not shown) may be located in the bus bar frame. Therefore, the end plate may physically protect the battery cell stack (not shown) and other electrical components from external impact.

[0058] Next, the lifting part 1400 included in the battery pack 1000 according to the embodiment of the present disclosure will be mainly described.

[0059] Reference Figure 2 and Figure 3 , the battery pack 1000 according to an embodiment of the present disclosure may include at least one lifting portion 1400 located between the inner frame 1300 and the upper portions of the battery pack frames 1100 and 1200. More specifically, the at least one lifting portion 1400 may be located between the inner frame 1300 and the upper battery pack frame 1200. In other words, the at least one lifting portion 1400 may be located in a space where the inner frame 1300 and the upper battery pack frame 1200 are spaced apart from each other.

[0060] At least one lifting portion 1400 may extend in the width direction (x-axis direction) of the battery module 100. More specifically, at least one lifting portion 1400 may extend in the same direction (x-axis direction) as the horizontal beam 1310. Here, the lifting portion 1400 may extend between one side surface and the other side surface of the outer frame 1110 at positions facing each other on the lower battery pack frame 1100.

[0061] In one example, if Figure 2 and Figure 3 As shown in , the at least one lifting portion 1400 may include a pair of lifting portions 1400. Here, the pair of lifting portions 1400 may be located between the horizontal beam 1310 and one side surface of the lower battery pack frame 1100 facing the horizontal beam 1310. In addition, the pair of lifting portions 1400 may be positioned to be spaced apart from each other.

[0062] However, the number and arrangement of the lifting parts 1400 are not limited thereto and may be included in the present embodiment as long as they are a number and / or arrangement capable of preventing the upper pack frame 1200 of the battery pack 1000 from sagging when thermal runaway occurs inside the battery pack 1000 .

[0063] The lifting part 1400 may include a lifting member 1410 that bends in an upward direction of the battery pack frames 1100 and 1200 when the temperature inside the battery pack frames 1100 and 1200 increases. More specifically, the lifting member 1410 may be a material whose length expands when the temperature inside the battery pack frame 1100 or 1200 increases. In addition, as described below, since the lifting member 1410 is fixed to the inner frame 1300 by the fixing member 1450, the lifting member 1410 may be bent toward the upper battery pack frame 1200 when the length expands.

[0064] In one example, the lifting member 1410 may be a material that expands in a temperature range of room temperature to 1500 degrees C. Here, room temperature means a temperature of 15 degrees Celsius to 25 degrees Celsius, and may have the same meaning as a commonly used room temperature.

[0065] Therefore, in the battery pack 1000 according to the present embodiment, sagging due to structural deformation of the upper battery pack frame 1200 can be prevented even while being able to support the upper battery pack frame 1200 within a temperature range from room temperature (the environment in which the battery pack 1000 is typically used) to a high temperature environment in which a thermal runaway phenomenon occurs in the battery pack 1000.

[0066] The lifting member 1410 may extend in the width direction (x-axis direction) of the battery module 100. More specifically, the lifting member 1410 may extend in the same direction (x-axis direction) as the horizontal beam 1310. Here, the lifting member 1410 may extend between one side surface and the other side surface of the outer frame 1110 at positions facing each other on the lower battery pack frame 1100.

[0067] like Figure 2 and Figure 3 As shown in , the lifting member 1410 may include a pair of lifting members 1410. Here, the pair of lifting members 1410 may be located between the horizontal beam 1310 and one side surface of the lower battery pack frame 1100 facing the horizontal beam 1310. In addition, the pair of lifting members 1410 may be positioned to be spaced apart from each other.

[0068] However, the number and arrangement of the lifting members 1410 are not limited thereto and may be included in the present embodiment as long as they are the number and / or arrangement capable of preventing the upper pack frame 1200 of the battery pack 1000 from sagging when a thermal runaway phenomenon occurs inside the battery pack 1000 .

[0069] Figure 4 It is shown that the Figure 1 A diagram of the shape of a lifting member in a battery pack.

[0070] The lifting member 1410 may have a shape in which an upper portion of the lifting member 1410 is formed of relatively more material than a lower portion of the lifting member 1410. In one example, Figure 4 As shown in FIG. 1 , the lifting member 1410 may have a cross-section in one of a V-shape, a U-shape, a T-shape, an inverted triangle, and a semicircle.

[0071] Therefore, the lifting member 1410 may be bent to a relatively large portion with more material under a high temperature environment due to an increase in temperature inside the battery pack 1000. That is, the lifting member 1410 may be bent toward an upper portion of the lifting member 1410. In other words, the lifting member 1410 may be bent in a direction toward the upper battery pack frame 1200.

[0072] However, the shape of the lifting member 1410 is not limited thereto and may be included in the present embodiment as long as it is a shape that can be bent toward the upper portion of the pack frames 1100 and 1200 in a high temperature environment due to an increase in temperature inside the battery pack 1000 .

[0073] In one example, the lifting member 1410 may be made of a steel material. However, it is not limited thereto, and may be included in the present embodiment as long as it has heat resistance and can be bent toward the upper portion of the battery pack frames 1100 and 1200 in a high temperature environment according to the temperature increase inside the battery pack 1000.

[0074] Figure 5 It is shown along Figure 3 FIG. 5 is a diagram of a portion of a cross section cut along the aa′ axis.

[0075] Reference Figures 3 to 5 , the lifting part 1400 may include at least one fixing member 1450 fixing the lifting member 1410 to the inner frame 1300. More specifically, at least one fixing member 1450 is disposed at a position where the lifting member 1410 and the inner frame 1300 contact each other, so that the lifting member 1410 and the inner frame 1300 can be fixed to each other. In one example, as Figure 3 , at least one lifting member 1410 is located on at least two vertical beams 1350, and at least one fixing member 1450 may fix at least one lifting member 1410 to at least two vertical beams 1350, respectively. That is, in the battery pack 1000 according to the present embodiment, the lifting member 1410 may not be fixed to the upper battery pack frame 1200.

[0076] In one example, the fixing member 1450 is a bolting member, and the lifting member 1410 and the inner frame 1300 can be bolted together. However, the coupling method and shape of the fixing member 1450 are not limited thereto, and as long as it is a method and shape that can fix the lifting member 1410 to the inner frame 1300, it can be included in the present disclosure.

[0077] Figure 6 and Figure 7 It is shown along Figure 3 FIG. 1 is a diagram of a portion of a cross section cut along the bb′ axis.

[0078] Reference Figure 5 and Figure 6 In a normal state of the battery pack 1000, the lifting portion 1400 may not be structurally deformed. In contrast, when the temperature inside the battery pack frames 1100 and 1200 increases, the lifting portion 1400 may be bent in a direction toward the upper portion of the battery pack frames 1100 and 1200, as shown in FIG. Figure 7 In other words, the lifting part 1400 may be bent in a direction toward the upper battery pack frame 1200 .

[0079] That is, the lifting member 1410 may expand in the longitudinal direction in a high temperature environment according to the increase in the internal temperature of the battery pack 1000. Here, a portion of the lifting member 1410 is fixed to the inner frame 1300 by the fixing member 1450 so that the lifting member 1410 may be bent toward the upper battery pack frame 1200 when it expands in the longitudinal direction.

[0080] More specifically, the lifting member 1410 may be configured such that a portion located between portions fixed by the fixing member 1450 is bent in a direction toward the upper portions of the battery pack frames 1100 and 1200. In other words, the lifting member 1410 may be configured such that a portion located between portions fixed by the fixing member 1450 is bent in a direction toward the upper battery pack frame 1200.

[0081] Therefore, in the battery pack 1000 according to the present embodiment, the bending direction of the lifting part 1400 is guided toward the upper pack frame 1200 , so that the lifting part 1400 can support the upper pack frame 1200 and increase the structural rigidity of the battery pack 1000 .

[0082] In addition, the lifting part 1400 prevents the sagging phenomenon caused by the structural deformation of the upper battery pack frame 1200, so that the lifting part 1400 can prevent the gas exhaust passage formed between the upper battery pack frame 1200 and the plurality of battery modules 100 from being blocked. That is, in the battery pack 1000 according to the present embodiment, even when the thermal runaway phenomenon occurs inside the battery pack 1000, the gas generated inside the battery pack 1000 can be easily discharged to the outside, and other heat propagation or explosion situations can be prevented or delayed.

[0083] According to another embodiment of the present disclosure, a device including the above-mentioned battery pack may be provided. Such a device may be applied to vehicles such as electric bicycles, electric vehicles, and hybrid vehicles, but the present disclosure is not limited thereto and is applicable to various devices that can use a battery module and a battery pack including the battery module, which also falls within the scope of the present disclosure.

[0084] Although the present invention has been described in detail with reference to the preferred embodiments of the present disclosure, the scope of the present disclosure is not limited thereto, and those skilled in the art may make various modifications and improvements using the basic concept of the present disclosure defined in the appended claims, which also fall within the scope of the present disclosure.

[0085] [Description of Reference Numerals]

[0086] 100: Battery module

[0087] 1000: Battery Pack

[0088] 1100: Lower battery pack frame

[0089] 1200: Upper battery pack frame

[0090] 1300: Inner frame

[0091] 1400: Promotion Department

[0092] 1410: Lifting Components

[0093] 1450: Fixed components

Claims

1. A battery pack, comprising: a battery pack frame to which a plurality of battery modules are mounted; an inner frame located within the battery pack frame and separating a plurality of battery modules from each other; as well as at least one lifting portion, the at least one lifting portion being located between the inner frame and an upper portion of the battery pack frame, The at least one lifting portion is deformed according to a temperature inside the battery pack frame.

2. The battery pack according to claim 1, wherein: The lifting portion includes a lifting member that is bent in a direction toward an upper portion of the pack frame when a temperature inside the pack frame increases.

3. The battery pack according to claim 2, wherein: The lifting portion further includes at least one fixing member fixing the lifting member to the inner frame.

4. The battery pack according to claim 3, wherein: The fixing member is a bolting member, and The lifting member and the inner frame are bolted together.

5. The battery pack according to claim 3, wherein: The lifting member is configured such that a portion located between portions fixed by the fixing member is bent in a direction toward an upper portion of the battery pack frame.

6. The battery pack according to claim 3, wherein: The lifting member extends along a width direction of the battery module.

7. The battery pack according to claim 6, wherein: The inner frame includes at least one horizontal beam extending along a width direction of the battery module and at least two vertical beams extending along a longitudinal direction of the battery module, and The at least one lifting portion extends in the same direction as the horizontal beam.

8. The battery pack according to claim 7, wherein: The at least one lifting portion includes a pair of lifting portions, the pair of lifting portions are positioned to be spaced apart from each other, and The pair of lifting portions are located between the horizontal beam and one side surface of the lower battery pack frame facing the horizontal beam.

9. The battery pack according to claim 7, wherein: The at least one lifting portion is located on the at least two vertical beams, and The fixing members fix the lifting members to the at least two vertical beams, respectively.

10. The battery pack according to claim 1, wherein: The lifting member has a shape in which an upper portion of the lifting member is formed of relatively more material than a lower portion of the lifting member.

11. The battery pack according to claim 10, wherein: The lifting member has a cross section in one of a V-shape, a U-shape, a T-shape, an inverted triangle, and a semicircle.

12. The battery pack according to claim 1, wherein: The lifting member is made of steel material.

13. A device comprising the battery pack according to claim 1.

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