Battery module and battery pack including the same

Abstract

A battery module according to one embodiment of the present invention comprises: a battery cell stack having a plurality of battery cells stacked thereon; a module frame accommodating the battery cell stack; and an upper thermally conductive material layer positioned between the upper surface of the battery cell stack and the upper portion of the module frame, wherein the battery cell includes a sealing portion in which a portion of the outer surface of the battery cell is sealed, and wherein the battery cell is arranged such that the sealing portion is directed toward the upper portion of the module frame, and the upper thermally conductive material layer covers the outer surface of the sealing portion, and the length of the sealing portion extending toward the upper portion of the module frame is equal to or greater than the length extending along the upper portion of the battery cell.

Description

Technology Field

[0001] The present invention relates to a battery module and a battery pack including the same, and more specifically, to a battery module with improved cooling performance and a battery pack including the same. Background Technology

[0002] With the increasing technological development and demand for mobile devices, the demand for secondary batteries as an energy source is rapidly increasing. In particular, secondary batteries are attracting significant interest as an energy source not only for mobile devices such as mobile phones, digital cameras, laptops, and wearable devices, but also for power devices such as electric bicycles, electric vehicles, and hybrid electric vehicles.

[0003] While small mobile devices use one or two or three battery cells per device, medium-to-large devices such as automobiles require high output and large capacity. Therefore, medium-to-large battery modules consisting of multiple battery cells electrically connected are used.

[0004] Since it is desirable for medium-to-large battery modules to be manufactured with the smallest possible size and weight, prismatic batteries and pouch-type batteries, which can be stacked with high integration density and have a low weight-to-capacity ratio, are mainly used as battery cells for medium-to-large battery modules. Meanwhile, the battery module may include a module frame that houses the battery cell stack in an internal space, with the front and rear sides open, to protect the battery cell stack from external shock, heat, or vibration.

[0005] Furthermore, if the temperature of a secondary battery rises above the optimal level, its performance may deteriorate, and in severe cases, there is a risk of explosion or ignition. In particular, battery modules or packs equipped with multiple secondary batteries—that is, battery cells—can experience a more rapid and severe temperature rise as heat generated from these cells accumulates within a confined space. In other words, while battery modules with stacked cells and battery packs equipped with such modules can achieve high output, it is not easy to dissipate the heat generated by the cells during charging and discharging. If heat dissipation from the battery cells is not properly achieved, the cells degrade rapidly, their lifespan is shortened, and the risk of explosion or ignition increases.

[0006] Furthermore, as the need to include more battery cells in battery modules increases, it is becoming crucial to secure stable and effective cooling performance regarding heat dissipation. In addition, as the current per hour is recently increased to charge battery modules relatively quickly, the need to address the heat generation problem of battery cells is becoming even greater.

[0007] Therefore, given the continuing trend of demands for increased capacity and rapid charging in battery modules, it is practically necessary to develop battery modules capable of enhancing cooling performance. The problem to be solved

[0008] The problem to be solved by the present invention is to provide a battery module with improved cooling performance and a battery pack including the same.

[0009] The problems that the present invention aims to solve are not limited to those described above, and problems not mentioned will be clearly understood by those skilled in the art from this specification and the attached drawings. means of solving the problem

[0010] A battery module according to one embodiment of the present invention comprises: a battery cell stack having a plurality of battery cells stacked thereon; a module frame accommodating the battery cell stack; and an upper thermally conductive material layer positioned between the upper surface of the battery cell stack and the upper portion of the module frame, wherein the battery cell includes a sealing portion in which a portion of the outer surface of the battery cell is sealed, and wherein the battery cell is arranged such that the sealing portion is directed toward the upper portion of the module frame, and the upper thermally conductive material layer covers the outer surface of the sealing portion, and the length of the sealing portion extending toward the upper portion of the module frame is equal to or greater than the length extending along the upper portion of the battery cell.

[0011] The length of the sealing portion extending toward the upper part of the module frame may be greater than the length extending along the upper part of the battery cell.

[0012] The sealing portion may be folded at least once in a clockwise or counterclockwise direction.

[0013] An internal thermally conductive material layer may be located on the folded surface of the sealing portion.

[0014] The folded surfaces of the above sealing part may be in contact with each other.

[0015] The above module frame includes a penetration portion through which a part of the upper portion of the module frame is penetrated, and the penetration portion may be located on the upper portion of the sealing portion.

[0016] The upper thermally conductive material layer may extend to the penetration portion.

[0017] The above penetration portion may be formed to be larger than the length of the sealing portion extending along the upper part of the battery cell.

[0018] A recess is formed on the lower surface of the upper part of the module frame, and the recess is recessed toward the upper surface of the module frame based on the lower surface of the upper part of the module frame, and the recess may be located on the upper part of the sealing part.

[0019] The upper thermally conductive material layer may extend into the interior of the depression.

[0020] The above-mentioned recess may be formed to be larger than the length of the sealing portion extending along the upper part of the battery cell.

[0021] It may further include a lower thermally conductive material layer located between the lower surface of the battery cell stack and the lower surface of the module frame.

[0022] A battery pack according to another embodiment of the present invention includes the battery module described above. Effects of the invention

[0023] According to the embodiments, the present invention relates to a battery module and a battery module comprising the same, wherein a sealing portion of a battery cell wrapped by an upper thermally conductive material layer is arranged in a direction toward the upper part of a module frame, and the length of the sealing portion extending toward the upper part of the module frame is equal to or smaller than the length extending along the upper part of the battery cell, and wherein cooling performance can be further improved by minimizing the thermal resistance of the sealing portion.

[0024] The effects of the present invention are not limited to the effects described above, and unmentioned effects will be clearly understood by those skilled in the art from this specification and the accompanying drawings. Brief explanation of the drawing

[0025] FIG. 1 is a perspective view of a battery module according to one embodiment of the present invention. Figure 2 is an exploded perspective view of the battery module of Figure 1. Figure 3 is a drawing showing a part of a cross-section cut along the A-A' axis of Figure 1. Figure 4 is a drawing showing an enlarged view of a part of Figure 3. FIGS. 5 to 7 are drawings showing a sealing portion according to another embodiment of the present invention. FIGS. 8 and 9 are drawings showing the upper part of a module frame according to another embodiment of the present invention. Figures 10 and 11 are drawings showing a sealing portion according to a comparative example. Specific details for implementing the invention

[0026] 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 present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0027] To clearly explain the present invention, parts unrelated to the explanation have been omitted, and the same reference numerals are used for identical or similar components throughout the specification.

[0028] Furthermore, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, and thus the present invention is not necessarily limited to what is illustrated. Thicknesses have been enlarged in the drawings to clearly represent various layers and regions. Additionally, for convenience of explanation, the thickness of some layers and regions has been exaggerated in the drawings.

[0029] Furthermore, throughout the specification, when a part is described as “comprising” a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0030] Additionally, throughout the specification, "planar" means when the subject part is viewed from above, and "cross-sectional" means when the cross-section obtained by vertically cutting the subject part is viewed from the side.

[0031] Hereinafter, a battery module according to an embodiment of the present invention will be described. However, the description herein will be based on the front side of the battery module, but is not necessarily limited thereto, and the description may be identical or similar in the case of the rear side.

[0032] FIG. 1 is a perspective view of a battery module according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of the battery module of FIG. 1.

[0033] Referring to FIG. 1, the battery module (100) according to the present embodiment includes a battery cell stack (120) in which a plurality of battery cells (110) are stacked, and a module frame (300, 400) that accommodates the battery cell stack (120).

[0034] Here, the battery cell stack (120) housed in the module frame (300, 400) comprises a plurality of battery cells (110) stacked in one direction, and it is preferable that the battery cells (110) are pouch-type battery cells. The battery cells (110) can be manufactured by housing an electrode assembly in a pouch case made of a laminate sheet including a resin layer and a metal layer, and then heat-fusing the sealing portion of the pouch case. A plurality of such battery cells (110) may be formed, and the plurality of battery cells (110) form a stacked battery cell stack (120) so that they can be electrically connected to each other.

[0035] Additionally, the module frame (300, 400) includes a lower frame (300) with an open top surface, front surface, and rear surface, and an upper plate (400) covering the top of the battery cell stack (120). Here, the top of the module frame (300, 400) may refer to the upper plate (400). Additionally, the lower frame (300) includes a bottom portion covering the bottom surface of the battery cell stack (120) and a side portion covering the side of the battery cell stack (120). However, the module frame (300, 400) is not limited thereto and may be replaced with a monoframe that surrounds the battery cell stack (120) excluding the front and rear surfaces, or one side of which is connected to the top of an L-shaped frame.

[0036] Additionally, referring to FIG. 1, end plates (150) are positioned on the front and rear sides of the battery cell stack (120), respectively. That is, end plates (150) can be positioned on both open sides of the module frames (300, 400).

[0037] The module frames (300, 400) and the end plates (150) can be joined by welding while their corresponding corner portions are in contact with each other. However, this is an exemplary method, and as a form of mechanical connection, bolt fastening, hook fastening, etc., may be applied. By housing the battery cell stack (120) in the space formed by these module frames (300, 400) and end plates (150), the battery cell stack (120) can be physically protected. To this end, the module frames (300, 400) and the end plates (150) may include a metal material or plastic material having a certain strength, such as aluminum.

[0038] Meanwhile, the battery module (100) according to the present embodiment includes a busbar frame (130) located between the battery cell stack (120) and the end plate (150). More specifically, the busbar frame (130) includes a first busbar frame and a second busbar frame, wherein the first busbar frame is located on the front of the battery cell stack (120) and the second busbar frame is located on the rear of the battery cell stack (120).

[0039] Additionally, the battery module (100) may include an insulating cover (not shown) located between the busbar frame (130) and the end plate (150). That is, the busbar frame (130), the insulating cover (not shown), and the end plate (150) may be positioned sequentially outward from the battery cell stack (120).

[0040] Additionally, a lower thermally conductive material layer (310) may be positioned between the battery cell stack (120) and the lower frame (300). For example, the lower thermally conductive material layer (310) may be formed by applying and curing a thermally conductive resin on the lower frame (300) before the battery cell stack (120) is mounted on the lower frame (300). For another example, the lower thermally conductive material layer (310) may be made of a material such as a thermally conductive film or a thermally conductive pad, in addition to a thermally conductive resin. However, it is not limited thereto, and any material containing a thermally conductive material may be included in this embodiment.

[0041] Accordingly, the lower thermally conductive material layer (310) can transfer heat generated in the battery cell (110) to the bottom of the battery module (100) to cool the battery cell (110).

[0042] Below, the sealing portion (110s) of the battery cell (110) and the upper thermally conductive material layer (320) are described in detail, focusing on the upper portion of the module frame (300, 400).

[0043] Figure 3 is a drawing showing a portion of a cross-section cut along the A-A' axis of Figure 1. Figure 4 is a drawing showing an enlarged portion of Figure 3.

[0044] Referring to FIGS. 3 and 4, in the battery module (100) of the present embodiment, the battery cell (110) includes a sealing portion (110s) in which a portion of the outer surface of the battery cell (110) is sealed. For example, the sealing portion (110s) may be formed by press welding or heat welding a portion of the outer surface of the battery cell (110).

[0045] Here, the battery cell (110) may be positioned such that the sealing portion (110s) faces the upper part of the module frame (300, 400) as shown in FIG. 3. For example, the battery cell (110) may be positioned such that the sealing portion (110s) faces the upper plate (400).

[0046] Accordingly, the lower part of the battery cell (110) does not have a sealing portion (110s) formed therein, so heat transfer between the battery cell (110) and the lower thermally conductive material layer (310) can be performed relatively easily, and cooling performance can be further improved.

[0047] Referring to FIGS. 2 to 4, the battery module (100) according to the present embodiment includes an upper thermally conductive material layer (320) located between the upper surface of the battery cell stack (120) and the upper part of the module frame (300, 400). Here, the upper thermally conductive material layer (320) may surround the outer surface of the sealing portion (110s). More specifically, the upper thermally conductive material layer (320) may be in contact with the outer surface of the sealing portion (110s).

[0048] For example, the upper thermal conductive material layer (320) may be formed after the battery cell stack (120) is mounted on the lower frame (300) and a thermal conductive resin is applied and cured on the battery cell stack (120). For another example, the upper thermal conductive material layer (320) may be made of a material such as a thermal conductive film or a thermal conductive pad, in addition to a thermal conductive resin. However, it is not limited thereto, and any material containing a thermal conductive material may be included in this embodiment.

[0049] Accordingly, the upper thermally conductive material layer (320) can transfer heat generated in the battery cell (110) to the upper part of the battery module (100) to cool the battery cell (110).

[0050] Additionally, referring to FIGS. 3 and 4, the length of the sealing portion (110s) extending toward the upper part of the module frame (300, 400) may be equal to or greater than the length extending along the upper part of the battery cell (110). For example, as shown in FIGS. 3 and 4, the length of the sealing portion (110s) extending toward the upper part of the module frame (300, 400) may be greater than the length extending along the upper part of the battery cell (110).

[0051] Accordingly, in this embodiment, the area occupied by the sealing portion (110s) in the heat transfer path from the top of the battery cell (110) toward the upper thermally conductive material layer (320) can be minimized. That is, by maximizing the contact area between the top of the battery cell (110) and the upper thermally conductive material layer (320), the heat transfer area between the battery cell (110) and the upper thermally conductive material layer (320) can be maximized, and the cooling performance of the battery cell (110) by the upper thermally conductive material layer (320) can be improved.

[0052] The sealing portion (110s) may be folded at least once in a clockwise or counterclockwise direction. For example, as shown in FIGS. 3 and 4, the sealing portion (110s) may be folded twice in a counterclockwise direction.

[0053] Here, the length of the sealing portion (110s) extending along the upper part of the battery cell (110) may refer to the portion extending along the upper part of the battery cell (110) based on the entire sealing portion (110s) that is folded at least once. Additionally, the length of the sealing portion (110s) extending toward the upper part of the module frame (300, 400) may refer to the portion extending toward the upper part of the module frame (300, 400) based on the entire sealing portion (110s) that is folded at least once.

[0054] Additionally, the folded surfaces of the sealing portion (110s) may be in contact with each other. In other words, as the sealing portion (110s) is folded at least once, the folded surfaces may be in contact with each other.

[0055] Accordingly, in this embodiment, when the area of ​​the sealing portion (110s) is relatively large, the sealing performance of the battery cell (110) is improved, and the sealing portion (110s) is folded at least once, thereby maximizing space utilization within the battery module (100). In addition, even when the sealing portion (110s) is folded at least once, the area occupied by the sealing portion (110s) on the upper part of the battery cell (110) can be minimized.

[0056] For example, a portion of the upper thermally conductive material layer (320) may be located between the folded surfaces of the sealing portion (110s). When the upper thermally conductive material layer (320) is formed by applying a thermally conductive material to the upper surface of the battery cell stack (120), a portion of the thermally conductive material may flow into the folded surfaces of the sealing portion (110s).

[0057] As another example, an internal thermally conductive material layer may be located on the folded surface of the sealing portion (110s). Here, the thermally conductive material constituting the internal thermally conductive material layer may have a higher or equal thermal conductivity than the thermally conductive material constituting the upper thermally conductive material layer (320).

[0058] More specifically, the upper thermally conductive material layer (320) and the internal thermally conductive material layer may each include at least one of acrylic and silicone materials. However, this is not limited thereto, and any material having thermally conductive properties may be included in this embodiment.

[0059] Accordingly, in the battery cell (100) of the present embodiment, a thermally conductive material is included inside the sealing portion (110s), so that the degree of heat transfer between the sealing portion (110s) and the upper thermally conductive material layer (320) can be increased, and the cooling performance of the upper thermally conductive material layer (320) for the battery cell (110) can be improved.

[0060] In addition, in a battery cell (100) according to another embodiment of the present invention, a fixing member (not shown) may be attached to the outer surface of the sealing portion (110s). For example, the fixing member (not shown) may be made of a material such as tape or a general adhesive material. For another example, the fixing member (not shown) may be made of an adhesive material having thermal conductivity. However, it is not limited thereto, and any material capable of fixing the outer surface of the sealing portion (110s) may be included in this embodiment.

[0061] Accordingly, a fixing member (not shown) can prevent the sealing portion (110s) from being folded or damaged during the process of mounting the battery cell (110) within the module frame (300, 400).

[0063] FIGS. 5 to 7 are drawings showing a sealing portion according to another embodiment of the present invention.

[0064] Referring to FIGS. 1, FIGS. 2, and FIGS. 5 to 7, in the battery module (100) according to the present embodiment, the sealing portion (110s) has a length extending toward the upper part of the module frame (300, 400) that is equal to or longer than the length extending along the upper part of the battery cell (110), and the sealing portion (110s) may have various shapes other than the sealing portion (110s) of FIGS. 3 and 4.

[0065] For example, as shown in FIG. 5, the sealing portion (110s) may have a shape that extends from the top of the battery cell (110) toward the top of the module frame (300, 400). In this case, the area occupied by the sealing portion (110s) on the top of the battery cell (110) can be minimized. In addition, the entire outer surface of the sealing portion (110s) may be covered by an upper thermally conductive material layer (320).

[0066] Accordingly, by maximizing the contact area between the upper part of the battery cell (110) and the upper thermally conductive material layer (320), the heat transfer area between the battery cell (110) and the upper thermally conductive material layer (320) can be maximized, and the cooling performance of the battery cell (110) by the upper thermally conductive material layer (320) can be further improved.

[0067] As another example, as shown in FIG. 6, the sealing portion (110s) may have a shape that is folded once in a counterclockwise direction. In this case, the area of ​​the sealing portion (110s) is increased compared to FIG. 5, thereby improving the sealing performance of the battery cell (110) while maximizing space utilization within the battery module (100).

[0068] Accordingly, in addition, even when the sealing portion (110s) is folded at least once, the area occupied by the sealing portion (110s) on the upper part of the battery cell (110) can be minimized.

[0069] As another example, as shown in FIG. 7, the sealing portion (110s) may have a shape that is folded multiple times. More specifically, the length of the sealing portion (110s) extending toward the upper part of the module frame (300, 400) may be equal to or similar to the length extending along the upper part of the battery cell (110). In this case, the length of the sealing portion (110s) extending toward the upper part of the module frame (300, 400) is reduced compared to FIG. 4 to 6, thereby maximizing the area of ​​the upper thermally conductive material layer (320) located on the upper part of the sealing portion (110s).

[0070] Accordingly, in the battery cell (100) of the present embodiment, the degree of heat transfer between the upper part of the sealing part (110s) and the upper thermally conductive material layer (320) can be increased, and the cooling performance of the upper thermally conductive material layer (320) for the battery cell (110) can be improved.

[0072] FIGS. 8 and 9 are drawings showing the upper part of a module frame according to another embodiment of the present invention.

[0073] Referring to FIG. 8, in a battery module (100) according to another embodiment of the present invention, the module frame (300, 400) may include a penetration portion (400p) through which a portion of the upper part of the module frame (300, 400) is penetrated. Here, the penetration portion (400p) may be located above the sealing portion (110s). More specifically, the penetration portion (400p) may be formed to be larger than the length to which the sealing portion (110s) extends along the upper part of the battery cell (110).

[0074] For example, the penetration portion (400p) may be formed in the shape of a slit. However, it is not limited to this, and the portion penetrating the upper part of the module frame (300, 400) may have various shapes.

[0075] Additionally, the upper thermally conductive material layer (320) may extend from the upper part of the module frame (300, 400) to the penetration part (400p). In this case, the area of ​​the upper thermally conductive material layer (320) located above the sealing part (110s) can be relatively increased.

[0076] Accordingly, in the battery cell (100) of the present embodiment, the module frame (300, 400) includes a penetration portion (400p), thereby increasing the degree of heat transfer between the upper part of the sealing portion (110s) and the upper thermally conductive material layer (320), and the cooling performance of the upper thermally conductive material layer (320) for the battery cell (110) can be effectively improved.

[0078] Referring to FIG. 9, in a battery module (100) according to another embodiment of the present invention, a recess (400h) may be formed on the lower surface of the upper part of the module frame (300, 400). Here, the recess (400h) may refer to a portion that is recessed toward the upper surface of the upper part of the module frame (300, 400) with respect to the lower surface of the upper part of the module frame (300, 400). Additionally, the recess (400h) may be located on the upper part of the sealing portion (110s). More specifically, the recess (400h) may be formed to be larger than the length to which the sealing portion (110s) extends along the upper part of the battery cell (110).

[0079] Additionally, the upper thermally conductive material layer (320) may extend into the interior of the recess (400h). In this case, the area of ​​the upper thermally conductive material layer (320) located above the sealing portion (110s) can be relatively increased.

[0080] Accordingly, in the battery cell (100) of the present embodiment, the degree of heat transfer between the upper part of the sealing part (110s) and the upper thermally conductive material layer (320) can be increased, and the cooling performance of the upper thermally conductive material layer (320) for the battery cell (110) can be improved. In addition, the upper part of the sealing part (110s) can be covered by the upper part of the module frame (300, 400), thereby protecting the battery cell (110) from external impact.

[0082] Below, a battery module according to a comparative example will be described. The battery module according to the comparative example can be described as being mostly the same as the battery module (100) described in FIGS. 1 to 4, and will be described focusing on the parts that are different.

[0083] Figures 10 and 11 are drawings showing a sealing portion according to a comparative example.

[0084] Referring to FIGS. 10 and 11, in the battery cell (11) included in the battery module according to the comparative example, the sealing portion (11s) is folded toward the top of the battery cell (11). More specifically, in the comparative example, the length of the sealing portion (11s) extending toward the upper plate (40) is smaller than the length extending along the top of the battery cell (11). In this case, the area occupied by the sealing portion (11s) on the top of the battery cell (11) is excessively large, so the sealing portion (11s) may obstruct heat transfer between the upper thermal conductive material layer (32) and the top of the battery cell (11). In particular, the sealing portion (11s) may act as a high thermal resistance in the heat transfer path between the upper thermal conductive material layer (32) and the top of the battery cell (11). Accordingly, in the battery module of the comparative example, the sealing portion (11s) has a problem of reducing the cooling performance of the upper thermally conductive material layer (32) for the battery cell (11).

[0085] In contrast, with reference to FIGS. 1 to 9, in the battery module (100) according to the present embodiment, the sealing portion (110s) has a length that extends toward the upper part of the module frame (300, 400) that is equal to or smaller than the length that extends along the upper part of the battery cell (110), so that the area occupied by the sealing portion (110s) on the upper part of the battery cell (110) can be minimized, and the cooling performance of the upper thermally conductive material layer (320) for the battery cell (110) can also be further improved.

[0087] Meanwhile, one or more of the battery modules according to the present embodiment may be packaged within a pack case to form a battery pack.

[0088] The battery module and battery pack containing the same described above can be applied to various devices. Such devices may be applied to means of transportation such as electric bicycles, electric vehicles, and hybrid vehicles, but the present invention is not limited thereto and can be applied to various devices capable of using the battery module and battery pack containing the same, and this also falls within the scope of the rights of the present invention.

[0089] Although 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 by those skilled in the art using the basic concept of the present invention as defined in the following claims also fall within the scope of the present invention. Explanation of the symbols

[0090] 100: Battery module 11, 110: Battery cell 11s, 110s: Sealing part 120: Battery cell stack 130: Busbar Frame 150: End plate 300: Lower frame 310: Lower thermally conductive material layer 32, 320: Upper thermally conductive material layer 40, 400: Upper plate

Claims

Claim 1 A battery module comprising: a battery cell stack having a plurality of battery cells stacked thereon; a module frame accommodating the battery cell stack; an upper thermally conductive material layer located between the upper surface of the battery cell stack and the upper portion of the module frame; and a lower thermally conductive material layer located between the lower surface of the battery cell stack and the lower portion of the module frame, wherein the battery cell includes a sealing portion in which a portion of the outer surface of the battery cell is sealed, and the battery cell is arranged only in a direction in which the sealing portion is directed toward the upper portion of the module frame, and the upper thermally conductive material layer surrounds the outer surface of the sealing portion, and the length of the sealing portion extending toward the upper portion of the module frame is equal to or greater than the length extending along the upper portion of the battery cell, and the module frame includes a penetration portion in which a portion of the upper portion of the module frame is penetrated, wherein the penetration portion is located above the sealing portion, and the upper thermally conductive material layer extends to the penetration portion, and the penetration portion is formed to be larger than the length of the sealing portion extending along the upper portion of the battery cell. Claim 2 In claim 1, the sealing portion is a battery module in which the length extending toward the upper part of the module frame is greater than the length extending along the upper part of the battery cell. Claim 3 In claim 1, the sealing portion is a battery module that is folded at least once in a clockwise or counterclockwise direction. Claim 4 A battery module according to paragraph 3, wherein an internal thermally conductive material layer is located on the folded surface of the sealing portion. Claim 5 In paragraph 3, the folded surface of the sealing portion is a battery module in contact with each other. Claim 6 delete Claim 7 delete Claim 8 A battery pack including a battery module according to paragraph 1. Claim 9 delete Claim 10 delete Claim 11 delete Claim 12 delete Claim 13 delete

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