Battery module with improved cooling performance and battery pack including the same

Abstract

The present invention relates to a battery module with improved cooling performance and a battery pack including the same, and more specifically, to a battery module including a horizontally positioned heat sink (100) having a predetermined area; a support plate (200) including an upper support plate (210) and a lower support plate (220) respectively positioned on the upper and lower surfaces of the heat sink (100); a battery cell (500) including a first battery cell (510) closely contacting the upper support plate (210) and a second battery cell (520) closely contacting the lower support plate (220); and a cover plate (600) including an upper cover plate (610) located above the first battery cell (510) and a lower cover plate (620) located below the second battery cell (520).

Description

[Technical field]

[0001] This application claims the benefit of priority to Korean Patent Application No. 2020-0121150 filed on September 21, 2020, and all contents disclosed in the documents of that Korean patent application are incorporated herein by reference.

[0002] The present invention relates to a battery module and a battery pack including the same, and more particularly to a battery module and a battery pack including the same, in which an area for heat exchange between a heat-generating battery cell and a heat sink is increased and heat exchange is also performed between a bus bar and the heat sink, thereby improving cooling performance. [Background technology]

[0003] Recently, the demand for secondary batteries that can store electrical energy produced by the development of alternative energy sources due to air pollution caused by the use of fossil fuels and energy depletion is increasing. Rechargeable secondary batteries are used in mobile devices, electric vehicles, hybrid electric vehicles, etc., and are closely related to daily life.

[0004] Secondary batteries are used as energy sources for various electronic devices that are essential in modern society, and the required capacity is increasing due to the increased use and complication of mobile devices and the development of electric vehicles, etc. To meet user demand, many battery cells are arranged in small devices, while automobiles use battery modules that electrically connect many battery cells or battery packs equipped with many such battery modules.

[0005] In order to improve capacity and output, a battery module or a battery pack uses a number of battery cells connected in series or parallel, but in this case, problems such as overload may occur due to the number of battery cells connected. In particular, since a battery module contains a number of battery cells, problems such as an increase in the internal temperature of the battery module due to overload may occur, amplifying abnormal conditions of the battery. To solve such problems, a general battery module is provided with a heat sink for cooling the heat generated inside the battery to maintain the battery temperature.

[0006] 1 is a cross-sectional view showing a cooling structure of a battery module according to the prior art. As shown in Fig. 1, the battery module according to the prior art includes a plurality of battery cells 20 vertically arranged on a heat sink 10, and a pair of cooling plates 40 vertically connected to the heat sink 10 and in direct contact with a bus bar assembly 30.

[0007] As described above, the battery module according to the conventional technology has a structure capable of cooling the heat generated in the battery cells 20 and the bus bar assembly 30 using the heat sink 10 and the cooling plate 40. However, the heat dissipation effect is low and the size of the battery module is inevitably large.

[0008] That is, since the heat sink 10 and the battery cells 20 are positioned vertically and in contact with each other, the contact area is small, and therefore it is difficult to quickly cool the heat generated in the battery cells 20, and the heat dissipation effect is low. Furthermore, since a separate cooling plate 40 and heat transfer member 50 are required to cool the bus bar assembly 30, the overall volume of the battery module increases, which inevitably reduces the energy density. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Korean Patent Publication No. 2020-0030968 Summary of the Invention [Problem to be solved by the invention]

[0010] In order to solve the above problems, an object of the present invention is to provide a battery module with improved cooling performance that can efficiently cool heat generated in battery cells to prevent secondary problems caused by heat generation, and a battery pack including the same.

[0011] Another object of the present invention is to provide a battery module and a battery pack including the same, which can minimize an increase in volume of the battery module by cooling bus bars using a battery cell cooling member.

[0012] Another object of the present invention is to provide a battery module and a battery pack including the same, which can improve adhesion and reduce cooling deviation for battery cells. [Means for solving the problem]

[0013] In order to achieve the above object, the battery module according to the present invention is characterized by including: a heat sink (100) having a predetermined area and positioned horizontally; a support plate (200) including an upper support plate (210) and a lower support plate (220) positioned on the upper and lower surfaces of the heat sink (100), respectively; a battery cell (500) including a first battery cell (510) in close contact with the upper support plate (210) and a second battery cell (520) in close contact with the lower support plate (220); and a cover plate (600) including an upper cover plate (610) positioned on an upper portion of the first battery cell (510) and a lower cover plate (620) positioned on a lower portion of the second battery cell (520).

[0014] In addition, in the battery module according to the present invention, a protruding portion (110) protruding to a predetermined height is provided on the upper surface of the heat sink (100), and a first opening (211) for accommodating the protruding portion (110) is formed in the upper support plate (210).

[0015] In the battery module according to the present invention, the first battery cell (510) is located on the upper surface of the protruding portion (110).

[0016] In addition, in the battery module according to the present invention, a protruding portion (110) protruding to a predetermined height is provided on the lower surface of the heat sink (100), and a second opening (221) for accommodating the protruding portion (110) is formed in the lower support plate (220).

[0017] In the battery module according to the present invention, the second battery cell (520) is located on the lower surface of the protruding portion (110).

[0018] In addition, the battery module according to the present invention is characterized in that a thermally conductive resin layer is interposed between the first battery cell (510) and the raised portion (110), and between the second battery cell (520) and the raised portion (110).

[0019] In addition, in the battery module according to the present invention, a first support frame (410) having a predetermined height and width along both side edges is located between the upper support plate (210) and the upper cover plate (610).

[0020] In addition, in the battery module according to the present invention, a first support frame (410) extending along the center and having a predetermined height and width is located between the upper support plate (210) and the upper cover plate (610).

[0021] In addition, in the battery module according to the present invention, a second support frame (420) extending along both side edges and having a predetermined height and width is positioned between the lower support plate (220) and the lower cover plate (620).

[0022] In addition, in the battery module according to the present invention, a second support frame (420) extending along the center and having a predetermined height and width is located between the lower support plate (220) and the lower cover plate (620).

[0023] In addition, in the battery module according to the present invention, a first bus bar assembly (310) is positioned between the upper support plate (210) and the upper cover plate (610).

[0024] In addition, in the battery module according to the present invention, the first busbar assembly (310) includes a first busbar frame (311) having a first accommodating groove (311(a)) formed therein, and a busbar (312) having a concave-convex structure bent at a predetermined angle multiple times and seated in the first accommodating groove (311(a)).

[0025] In addition, in the battery module according to the present invention, a second bus bar assembly (320) is disposed between the lower support plate (220) and the lower cover plate (620).

[0026] The present invention may also be a battery pack housing a battery module including one or more of the above features.

[0027] The present invention may also be a device including the battery pack. Effect of the Invention

[0028] As described above, according to the battery module with improved cooling performance and the battery pack including the same according to the present invention, the relatively wide side surfaces of the battery cells and the heat sink are positioned horizontally and in close contact with each other, which has the advantage of improving the cooling performance of the battery cells due to an increased heat exchange area.

[0029] In addition, the battery module with improved cooling performance and the battery pack including the same according to the present invention have the advantage that a separate heat sink is not required because the heat sink for cooling the battery cells is in contact with the bus bar.

[0030] Furthermore, in the battery module with improved cooling performance and the battery pack including the same according to the present invention, the battery cells, heat sink, support plate, etc. are fastened by a plurality of support frames and fastening members, so that it is possible to maintain uniform adhesion between the battery cells and the heat sink as well as to maximize space utilization. [Brief description of the drawings]

[0031] [Figure 1] FIG. 1 is a cross-sectional view showing a cooling structure for a battery module according to the prior art. [Diagram 2] 1 is a perspective view of a battery pack according to a preferred embodiment of the present invention; [Diagram 3] FIG. 3 is an exploded perspective view of the battery pack shown in FIG. 2. [Figure 4] 3 is a cross-sectional view taken along line AA' in FIG. 2. [Diagram 5] 1 is an exploded perspective view of a battery module according to a preferred embodiment of the present invention; [Figure 6] 4 is a perspective view illustrating a coupling structure between a heat sink and a support plate in a battery module according to a preferred embodiment of the present invention; FIG. [Figure 7] 1 is a perspective view illustrating a mounting structure of a battery cell in a battery module according to a preferred embodiment of the present invention; [Figure 8]FIG. 2 is a perspective view illustrating an arrangement structure of a support frame in a battery module according to a preferred embodiment of the present invention. [Figure 9] 2 is a perspective view illustrating a coupling structure between a battery cell and a bus bar in a battery module according to a preferred embodiment of the present invention; FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, which are provided to enable a person having ordinary skill in the art to which the present invention pertains to easily carry out the present invention. However, in describing the operation principle of the preferred embodiment of the present invention in detail, detailed descriptions of related well-known functions or configurations will be omitted if it is determined that such detailed descriptions may unnecessarily obscure the gist of the present invention.

[0033] In addition, the same reference numerals are used throughout the drawings for parts having similar functions and actions. Throughout the specification, when a part is said to be connected to another part, this includes not only the case where the part is directly connected to another part, but also the case where the part is indirectly connected via another element between the two parts. In addition, when a part includes a certain component, it does not mean that the other component is excluded, but that the part may further include the other component, unless otherwise specified. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a battery module having improved cooling performance and a battery pack including the same according to the present invention will be described with reference to the accompanying drawings.

[0034] FIG. 2 is a perspective view of a battery pack according to a preferred embodiment of the present invention, FIG. 3 is an exploded perspective view of the battery pack shown in FIG. 2, and FIG. 4 is a cross-sectional view taken along line AA' in FIG.

[0035] As shown in FIGS. 2 to 4, in the battery pack according to the present invention, a plurality of battery modules 1000 are stacked horizontally, and these battery modules 1000 are fixed by a plurality of fastening members B.

[0036] Here, the fastening member B may be, for example, a bolt having a spiral groove, and may further include a nut that is fastened to a portion that penetrates and protrudes from the lower surface of the lower cover plate 620.

[0037] Of course, although not shown in the drawings, the battery module 1000 can be stored in another case (not shown) while being fixed by fastening member B, and in some cases, it can be stored in a case (not shown) and then fixed together with the case (not shown) by fastening member B.

[0038] 5 is an exploded perspective view of a battery module according to a preferred embodiment of the present invention. As shown in FIG. 5, each battery module 1000 includes a heat sink 100, a support plate 200, a bus bar assembly 300, a support frame 400, a battery cell 500, and a cover plate 600.

[0039] First, the heat sink 100 is a flat plate having a predetermined area with a flow path formed therein, and a plurality of protruding protrusions 110 are formed at predetermined distances from each other on the upper and lower surfaces of the heat sink 100. The protruding protrusions 110 will be described in detail later.

[0040] The support plate 200 includes an upper support plate 210 located on either side of the heat sink 100 , more specifically, an upper surface of the heat sink 100 , and a lower support plate 220 located on the lower surface of the heat sink 100 .

[0041] The busbar assembly 300 for electrically connecting the battery cells 500 to each other includes a first busbar assembly 310 and a second busbar assembly 320. The first busbar assembly 310 is located on an upper surface of the upper support plate 210, and the second busbar assembly 320 is located on a lower surface of the lower support plate 220.

[0042] Although the drawings show the first busbar assemblies 310 as being made up of a total of six, one near each edge of the upper support plate 210, and four of them positioned along the longitudinal direction (X-axis direction) with a predetermined distance between them, this is merely an example, and the number and positions can be changed as long as they can be in close contact with the upper support plate 210.

[0043] The second busbar assembly 320 has a symmetrical structure to the first busbar assembly 310, and therefore further description thereof will be omitted.

[0044] Next, the support frame 400 includes a first support frame 410 and a second support frame 420. The first support frame 410 is located between the upper support plate 210 and the upper cover plate 610, and the second support frame 420 is located between the lower support plate 220 and the lower cover plate 620. More detailed contents thereof will be described later.

[0045] The battery cell 500 is composed of a plurality of first battery cells 510 and second battery cells 520 positioned horizontally on the heat sink 100. Specifically, the first battery cells 510 are positioned between the upper support plate 210 and the upper cover plate 610, and the second battery cells 520 are positioned between the lower support plate 220 and the lower cover plate 620.

[0046] The first battery cell 510 and the second battery cell 520 may be battery cells having the same configuration, for example, including a cell case that houses an electrode assembly (not shown) and a pair of electrode leads.

[0047] Here, the electrode assembly may be, but is not limited to, a jelly roll type assembly having a structure in which a separator is interposed between long sheet-like positive and negative electrodes and then wound up, a stack type assembly having a structure in which rectangular positive and negative electrodes are stacked with a separator sandwiched between them, a stack folding type assembly in which unit cells are wound up with a long separator film, or a lamination stack type assembly in which battery cells are stacked with a separator sandwiched between them and attached to each other, etc. When forming a curved module, the electrode assembly according to the present invention is preferably a stack folding type or lamination stack type structure in which physical stress is minimal.

[0048] The electrode assembly is housed in a cell case, and the cell case usually has a laminated sheet structure of an inner layer / metal layer / outer layer. The inner layer must have insulating properties and electrolyte resistance since it is in direct contact with the electrode assembly, and must have sealing properties, i.e., the sealing portion where the inner layers are thermally bonded to each other must have excellent thermal bonding strength, in order to seal against the outside. The material of the inner layer may be selected from polyolefin resins such as polypropylene, polyethylene, polyethylene acetate, and polybutylene, which have excellent chemical resistance and sealing properties, polyurethane resins, and polyimide resins, but is not limited thereto. Polypropylene, which has excellent mechanical properties such as tensile strength, rigidity, surface hardness, and impact strength, and excellent chemical resistance, is the most preferred.

[0049] The metal layer in contact with the internal layer corresponds to a barrier layer that prevents moisture and various gases from penetrating into the interior of the battery from the outside. A suitable material for such a metal layer is a thin aluminum film, which is lightweight yet has excellent formability.

[0050] The other side of the metal layer is provided with an outer layer, which may be made of a heat-resistant polymer having excellent tensile strength, moisture permeability, and air permeability so as to protect the electrode assembly and ensure heat resistance and chemical resistance, such as, but not limited to, nylon or polyethylene terephthalate.

[0051] Meanwhile, the pair of electrode leads includes a positive electrode lead and a negative electrode lead, and may be exposed to the outside of the cell case after the positive electrode tab and the negative electrode tab of the electrode assembly are electrically connected, respectively, or may be directly connected to the electrode assembly without tabs.

[0052] Next, the cover plate 600 serves to protect the battery cell 500 from the outside, and includes an upper cover plate 610 and a lower cover plate 620 .

[0053] Specifically, the upper cover plate 610 is positioned above the first battery cell 510 to protect the upper surface of the first battery cell 510 , and the lower cover plate 620 is positioned below the second battery cell 520 to protect the lower surface of the second battery cell 520 .

[0054] The upper cover plate 610 and the lower cover plate 620 are provided with a plurality of through holes spaced apart from each other by a predetermined distance so that the fastening member B can be inserted therethrough.

[0055] FIG. 6 is a perspective view illustrating a coupling structure between a heat sink and a support plate in a battery module according to a preferred embodiment of the present invention.

[0056] Referring to FIG. 6, an upper support plate 210 is disposed on an upper surface of a heat sink 100 according to the present invention, and a lower support plate 220 is disposed on a lower surface of the heat sink 100 .

[0057] Meanwhile, it is preferable that a protrusion 110 protruding in a predetermined shape to a predetermined height is formed on both sides of the heat sink 100, i.e., the upper and lower surfaces, and it is more preferable that a first opening 211 is formed in the upper support plate 210 for accommodating the protrusion 110 formed on the upper surface of the heat sink 100, and a second opening 221 is formed in the lower support plate 220 for accommodating the protrusion 110 formed on the lower surface of the heat sink 100.

[0058] As described above, when the upper support plate 210 and the lower support plate 220 are respectively in close contact with the upper and lower surfaces of the heat sink 100 having the raised portion 110 formed on both sides, the raised portion 110 on the upper surface of the heat sink 100 is inserted into the first opening 211, and the raised portion 110 formed on the lower surface of the heat sink 100 is inserted into the second opening 221, thereby preventing left and right shaking.

[0059] Here, the upper support plate 210 and the lower support plate 220 may be plates made of a thermally conductive resin.

[0060] Meanwhile, a cooling water inlet port 120 for supplying cooling water is provided on one side of the heat sink 100, and a cooling water outlet port 130 for discharging the cooling water after heat exchange is provided nearby, and it is clear that the cooling water inlet port 120 and the cooling water outlet port 130 do not necessarily need to be located nearby each other as long as the cooling water can be supplied and discharged. Also, the heat sink 100 and the support plate 200 are each provided with a through hole so that the fastening member B can pass therethrough.

[0061] FIG. 7 is a perspective view for explaining the mounting structure of a battery cell in a battery module according to a preferred embodiment of the present invention, and FIG. 8 is a perspective view for explaining the arrangement structure of a support frame in a battery module according to a preferred embodiment of the present invention.

[0062] The first battery cells 510 according to the present invention are inserted into the first openings 211 of the upper support plate 210 and seated horizontally on the protruding portions 110 of the heat sink 100 exposed to the outside and the upper support plate 210 .

[0063] In conventional battery modules, the battery cells and the heat sink are positioned perpendicular to each other, so the contact area between the battery cells and the heat sink is small, which limits the cooling performance.

[0064] In contrast, the battery module 1000 according to the present invention has a structure in which the heat sink 100 and the first battery cell 510 are positioned parallel to each other and the raised portion 110 of the heat sink 100 is arranged to contact the horizontal side of the first battery cell 510, thereby providing the advantage of being able to quickly increase heat transfer efficiency.

[0065] Of course, it is clear that the remaining area of ​​the first battery cell 510 that is not in contact with the protrusion 110 of the heat sink 100 is in intimate contact with the upper support plate 210 .

[0066] Meanwhile, a known thermally conductive resin layer can be interposed between the protruding portion 110 and the first battery cell 510 in order to fix them to each other.

[0067] The mounting structure of the second battery cell 520 and the lower support plate 220 is the same as the coupling structure of the first battery cell 510 and the upper support plate 210, except for the direction, and therefore a detailed description thereof will be omitted.

[0068] As described above, the support frame 400 includes a first support frame 410 and a second support frame 420 .

[0069] The first support frame 410 is located between the upper support plate 210 and the upper cover plate 610, more specifically, at both side edges and the center of the upper support plate 210 along the longitudinal direction (X-axis direction) of the battery module, and has a predetermined width, height and length, and a cross section of a substantially rectangular bar shape. The first support frame 410 has a plurality of first through holes 411 spaced apart from each other by a predetermined distance so that the fastening member B can pass through.

[0070] The second support frame 420 is similar in configuration to the first support frame 410, except that it is located between the lower support plate 220 and the lower cover plate 620. That is, the second support frame 420 also has a plurality of second through holes 421 formed therein at a predetermined distance apart so that the fastening member B can pass through.

[0071] Even when multiple battery modules 1000 are fastened in a stacked state, the first support frame 410 and the second support frame 420 as described above can maintain a predetermined distance between the plate 200 and the cover plate 600 at all times, which has the advantage of not only preventing the battery cells 500 from being pressed more than necessary but also suppressing localized expansion when swelling occurs.

[0072] FIG. 9 is a perspective view illustrating a coupling structure between a battery cell and a bus bar in a battery module according to a preferred embodiment of the present invention.

[0073] 7, the busbar assembly 300 is composed of a first busbar assembly 310 and a second busbar assembly 320. Since the specific configurations of these are the same and only the positions where they are arranged are different, the following description will focus on the first busbar assembly 310.

[0074] The first busbar assembly 310 includes a first busbar frame 311 and a busbar 312. The first busbar frame 311 supports the busbars 312 and electrically connects the busbars 312 located nearby, and the first busbar frame 311 is formed with a first accommodating groove 311(a) for accommodating the busbars 312 and a second accommodating groove 311(b) that is recessed relatively deeper than the first accommodating groove 311(a).

[0075] Busbar 312 has a concave-convex structure bent multiple times at a predetermined angle, and includes a first horizontal portion 312(a), a second horizontal portion 312(b) located relatively lower than first horizontal portion 312(a), and a connecting portion 312(c) bent at a predetermined angle to connect first horizontal portion 312(a) and second horizontal portion 312(b).

[0076] When the busbar 312 having the above-mentioned configuration is seated in the accommodating groove of the first busbar frame 311, the first horizontal portion 312(a) is inserted into the first accommodating groove 311(a), and the second horizontal portion 312(b) is inserted into the second accommodating groove 311(b), so that the first busbar frame 311 and the busbar 312 can be firmly fastened to each other.

[0077] On the other hand, the electrode lead 511 of the first battery cell 510 is seated on the first horizontal portion 312(a).

[0078] Conventional battery modules have a problem in that they do not have a function to cool the busbar assembly 300 or must additionally be equipped with such a function. However, in the present invention, the busbar assembly 300 is positioned so as to be in surface contact with the upper support plate 210 and the lower support plate 220, which are respectively positioned on the upper and lower surfaces of the heat sink 100, so that the busbar assembly 300 can be cooled with only a single heat sink 100 for cooling the battery cells, thereby minimizing an increase in the volume of the battery module.

[0079] The present invention may be a battery pack equipped with a battery module 1000 having one or more of the above-mentioned features, and the battery pack can be installed in devices such as electric vehicles, hybrid vehicles, plug-in hybrid electric vehicles, etc.

[0080] Those skilled in the art will appreciate that various applications and modifications within the scope of the present invention are possible based on the above content. [Explanation of symbols]

[0081] 1000 Battery Modules 100 Heatsink 110 Ridge 120 Cooling water inlet port 130 Cooling water spill photo 200 Support Plate 210 Upper support plate 211 First Opening 220 Lower support plate 221 Second Opening 300 Busbar Assembly 310 First busbar assembly 311 First bus bar frame 311(a) First storage trench 311(b) Second storage trench 312 Busbar 312(a) 1st horizontal section 312(b) Second horizontal section 312(c) Connections 320 Second busbar assembly 400 Support Frame 410 First support frame 411 First Through Hole 420 Second Support Frame 421 2nd Through Hole 500 Battery Cells 510 1st battery cell 511 Electrode Lead 520 Second battery cell 600 Cover Plate 610 Top cover plate 620 Lower Cover Plate B Fastening member

Claims

1. A horizontally positioned heat sink (100) having a predetermined area; a support plate (200) including an upper support plate (210) and a lower support plate (220) respectively positioned on the upper and lower surfaces of the heat sink (100); a battery cell (500) including a first battery cell (510) in close contact with the upper support plate (210) and a second battery cell (520) in close contact with the lower support plate (220); a cover plate (600) including an upper cover plate (610) located on an upper portion of the first battery cell (510) and a lower cover plate (620) located on a lower portion of the second battery cell (520); A battery module comprising: The heat sink (100) has an upper surface provided with a protruding portion (110) protruding to a predetermined height, and the upper support plate (210) has a first opening (211) for accommodating the protruding portion (110).

2. The battery module of claim 1 , wherein the first battery cell (510) is located on an upper surface of the raised portion (110).

3. A heat sink (100) having a predetermined area and positioned horizontally; a support plate (200) including an upper support plate (210) and a lower support plate (220) respectively positioned on the upper and lower surfaces of the heat sink (100); a battery cell (500) including a first battery cell (510) in close contact with the upper support plate (210) and a second battery cell (520) in close contact with the lower support plate (220); a cover plate (600) including an upper cover plate (610) located on an upper portion of the first battery cell (510) and a lower cover plate (620) located on a lower portion of the second battery cell (520); A battery module comprising: The lower surface of the heat sink (100) is provided with a protruding portion (110) protruding to a predetermined height, and the lower support plate (220) is formed with a second opening (221) for accommodating the protruding portion (110).

4. The battery module of claim 3 , wherein the second battery cell (520) is located on a lower surface of the raised portion (110).

5. 3. The battery module according to claim 2, wherein a thermally conductive resin layer is interposed between the first battery cell (510) and the raised portion (110), and between the second battery cell (520) and the raised portion (110).

6. 6. The battery module according to claim 1, wherein a first support frame (410) having a predetermined height and width along both side edges is located between the upper support plate (210) and the upper cover plate (610).

7. 7. The battery module according to claim 6, wherein the first support frame (410) is located between the upper support plate (210) and the upper cover plate (610), extending along a center thereof and having a predetermined height and width.

8. 8. The battery module according to claim 1, wherein a second support frame (420) is located between the lower support plate (220) and the lower cover plate (620), the second support frame extending along both side edges and having a predetermined height and width.

9. 9. The battery module according to claim 8, wherein the second support frame (420) is located between the lower support plate (220) and the lower cover plate (620), extending along a center thereof and having a predetermined height and width.

10. The battery module according to claim 1 , wherein a first busbar assembly (310) is located between the upper support plate (210) and the upper cover plate (610).

11. A heat sink (100) having a predetermined area and positioned horizontally; a support plate (200) including an upper support plate (210) and a lower support plate (220) respectively positioned on the upper and lower surfaces of the heat sink (100); a battery cell (500) including a first battery cell (510) in close contact with the upper support plate (210) and a second battery cell (520) in close contact with the lower support plate (220); a cover plate (600) including an upper cover plate (610) located on an upper portion of the first battery cell (510) and a lower cover plate (620) located on a lower portion of the second battery cell (520); A battery module comprising: A first busbar assembly (310) is located between the upper support plate (210) and the upper cover plate (610), The first busbar assembly 310 includes a first busbar frame 311 having a first receiving groove 311(a) formed therein; a bus bar (312) having a concave-convex structure bent at a predetermined angle multiple times and seated in the first receiving groove (311(a)); a battery module including:

12. The battery module of claim 1 , wherein a second busbar assembly (320) is located between the lower support plate (220) and the lower cover plate (620).

13. A battery pack comprising multiple battery modules described in any one of claims 1 to 12 stacked vertically in a row.

14. A device comprising the battery pack of claim 13.

Images