Battery pack with single cell edge cooling structure and device including the same

Abstract

A battery pack according to an embodiment of the disclosure includes: a cell module assembly including a battery cell stack containing a plurality of stacked battery cells and a busbar frame covering both side surfaces of the battery cell stack; and a battery pack frame on which the cell module assembly is seated, wherein a gap is formed between the battery pack frame and an upper end of the cell module assembly and between the battery pack frame and a lower end of the cell module assembly, and air flows into the gap through holes formed in the busbar frame to cool edge portions of the battery cells.

Description

Technical Field

[0001] Cross-reference to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2024-0084584, filed on June 27, 2024, the disclosure of which is incorporated herein by reference in its entirety.

[0003] This disclosure relates to a battery pack having a single-cell edge cooling structure, and more specifically, to a battery pack that achieves the single-cell edge cooling structure by forming a cooling flow path through the upper and lower spaces of the battery cell stack, and an apparatus including the battery pack. Background Technology

[0004] Secondary batteries have attracted attention as a power source for electric vehicles, hybrid electric vehicles, and plug-in hybrid electric vehicles, which have been developed to address problems such as air pollution caused by existing gasoline and diesel vehicles that use fossil fuels.

[0005] Small mobile devices use one to three battery cells per device, while medium or large devices such as vehicles require high power and large capacity. Therefore, medium or large battery modules with multiple battery cells electrically connected to each other are used.

[0006] Since medium or large battery modules are preferably manufactured to have the smallest possible size and weight, prismatic batteries and pouch-type batteries are mainly used as individual cells in medium or large battery modules. They can be stacked with high integration and have a small weight relative to capacity. In particular, pouch-type batteries using materials such as aluminum-plastic composite films as sheath components have attracted much attention in recent years due to their advantages such as light weight, low manufacturing cost, and ease of shape modification.

[0007] Because the individual cells constituting these medium or large battery modules are rechargeable / dischargeable secondary batteries, these high-output and high-capacity secondary batteries generate a significant amount of heat during charging and discharging. In particular, pouch cells, widely used in battery modules, can generate heat during repeated charging and discharging. Since these pouch cells are concentrated in the confined space of the battery module, the module's temperature can rise considerably during use. If the battery module is heated above its optimal temperature, its performance may deteriorate, and in the worst-case scenario, there is a risk of explosion or fire. Therefore, ensuring adequate cooling measures when configuring battery modules is a crucial issue.

[0008] Water-cooled and air-cooled types are generally used in cooling systems; however, due to the water resistance and leakage issues of secondary batteries, air-cooled types are more widely used.

[0009] According to existing technology, air-cooled battery modules are typically designed with a structure that provides gaps between battery cells stacked in one direction to ensure flow paths and allow air to pass through these flow paths. As an example, Korean Unexamined Patent Publication No. 10-2013-0035192 discloses a technology that provides gaps between battery cells and allows air to flow between them, thereby cooling the battery cells. Korean Unexamined Patent Publication No. 10-2014-0144781 discloses a technology involving contacting two cooling fins between battery cells, providing flow paths between the two cooling fins to allow air flow, thereby indirectly cooling the battery cells using cooling fins that have already been air-cooled.

[0010] However, due to the need to ensure sufficient spacing between individual cells to maintain airflow paths, air-cooled battery modules according to the aforementioned prior art may have low energy density per unit volume. Furthermore, when subjected to impact or vibration, individual cells may come into close contact with each other, eliminating airflow paths, or foreign objects may enter and block narrow airflow paths, posing a risk of insufficient structural stability. In addition, maintaining consistent spacing between individual cells requires additional components such as cartridges, increasing the assembly process and consequently raising costs. Summary of the Invention

[0011] Technical issues

[0012] The purpose of this disclosure is to provide a battery pack and device in which a cooling path is formed through the upper and lower spaces of the battery cell stack, without any additional structure between adjacent battery cells, thereby achieving a cell edge cooling structure.

[0013] However, the problems to be solved by the embodiments of this disclosure are not limited to those described above, and various extensions can be made within the scope of the technical ideas included in this disclosure.

[0014] Technical solution

[0015] According to one aspect of this disclosure, a battery pack is provided, the battery pack comprising: a cell module assembly including a stack of battery cells and a busbar frame, the stack of battery cells comprising a plurality of stacked battery cells, the busbar frame covering both side surfaces of the stack of battery cells; and a battery pack frame, the cell module assembly being disposed on the battery pack frame, wherein gaps are formed between the upper end of the battery pack frame and the cell module assembly and between the lower end of the battery pack frame and the cell module assembly, and air flows into the gaps through holes formed in the busbar frame to cool the edges of the battery cells.

[0016] The battery pack also includes cover assemblies, each cover assembly covering two side surfaces of a single-cell module assembly that are spaced apart from each other along the stacking direction of the battery cells. Each of the cover assemblies has an inlet and an outlet, through which external air flows in and through which air passing through the single-cell module assembly is discharged.

[0017] Air flowing into the inlet can flow along one side surface of the single module assembly, and air can flow into the gap through holes formed in the manifold frame, and air passing through the gap can be discharged through the outlet.

[0018] When viewed in a floor plan, entrances and exits can be arranged diagonally opposite each other.

[0019] The battery pack includes: a first airflow path formed in a straight line with the direction of forming an inlet; a second airflow path formed between the battery pack frame and the individual module assembly; and a third airflow path formed in a straight line with the direction of forming an outlet, wherein the first airflow path and the third airflow path are formed in the same direction as the stacking direction of the individual battery cells, and the second airflow path is formed in a direction perpendicular to the stacking direction of the individual battery cells.

[0020] The second airflow path can correspond to the gap through which air flows in through the holes formed in the manifold frame.

[0021] The first side surface formed by the cover assembly of the battery cell stack and the second side surface formed by the busbar frame of the battery cell stack can intersect each other.

[0022] The battery pack may also include a cover plate located between the cover assembly and the first side surface of the battery cell stack.

[0023] Air flowing in through holes formed in the busbar frame comes into direct contact with the electrode leads protruding from the battery cell, thereby cooling the electrode leads.

[0024] The portion of the electrode lead that comes into contact with the air flowing in through the hole can be located in the space between the busbar frame and the battery cell stack.

[0025] The hole may include a central hole formed in the middle part of the busbar frame and a lower hole formed in the lower part of the busbar frame, and air flowing in through the central hole may directly contact the electrode leads.

[0026] The battery pack may also include an insulating plate located at the bottom of the battery pack frame between the battery pack frame and the individual module assembly.

[0027] The battery pack frame includes: a bottom frame facing the lower part of the individual module assembly; an upper frame covering the upper part of the individual module assembly; and a side surface frame surrounding the left and right surfaces of the individual module assembly, wherein the side surface frame may surround the busbar frame.

[0028] The upper end of the busbar frame and the upper frame of the battery pack frame are spaced apart from each other, while the lower end of the busbar frame and the bottom frame of the battery pack frame can be in direct contact with each other.

[0029] According to another aspect of this disclosure, an apparatus comprising at least one battery pack as described above is provided.

[0030] Beneficial effects

[0031] According to a specific embodiment, air can flow in through holes formed in the manifold housing, thereby increasing the cooling flow and cooling not only the monomer platform but also the monomer leads.

[0032] In addition, according to a specific embodiment, a space can be formed between the busbar housing and the battery pack frame to cool the edges of the cells when air moves.

[0033] The effects of this disclosure are not limited to those described above, and those skilled in the art will clearly understand from the description of the appended claims any additional effects not described above. Attached Figure Description

[0034] Figure 1 This is an exploded perspective view of a battery pack according to an embodiment of the present disclosure.

[0035] Figure 2 It shows the air in Figure 1 A 3D view of the moving state within the battery pack.

[0036] Figure 3 It is shown that it includes Figure 1 A 3D view of the individual battery cells in the battery pack.

[0037] Figure 4 This is a perspective view showing a single module assembly according to an embodiment of the present disclosure.

[0038] Figure 5 It is shown in Figure 1The front view of the busbar frame as viewed along the -x axis.

[0039] Figure 6 It shows the air along Figure 1 A cross-sectional view of the state of movement on the section cut by the zx plane. Detailed Implementation

[0040] Various embodiments of this disclosure will be described in detail below with reference to the accompanying drawings, enabling those skilled in the art to readily implement them. This disclosure can be modified in various different ways and is not limited to the embodiments set forth herein.

[0041] Parts irrelevant to the description will be omitted in order to clearly describe this disclosure, and the same reference numerals will denote the same elements throughout the specification.

[0042] Furthermore, in the accompanying drawings, the dimensions and thicknesses of each element are shown arbitrarily for ease of description, and this disclosure is not limited to the dimensions and thicknesses shown in the drawings. In the accompanying drawings, the thicknesses of layers, regions, etc., are enlarged for clarity. In the accompanying drawings, the thicknesses of some layers and regions are enlarged for ease of description.

[0043] Furthermore, when layers, membranes, regions, plates, etc., are arranged "on" or "above" a specific part, this description includes not only cases where layers, membranes, regions, plates, etc., are arranged "directly" on the specific part, but also cases where layers, membranes, regions, plates, etc., are arranged on the specific part via another part. When one part is arranged "directly" on or "above" another part, this means that there is no new component between the two parts. Furthermore, when a component is arranged "on" or "above" a reference part, this means that the component exists at the top or bottom of the reference part, and does not necessarily mean that the component is only arranged at the top of the reference part opposite to the direction of gravity. Similarly, similar to the description of being located "on" or "above" another part, the description of being located "below" or "below" another part should also be understood with reference to the above.

[0044] Furthermore, throughout the specification, when a section is referred to as "including" a particular component, unless otherwise stated, it means that the section may also include other components, without excluding other components.

[0045] Furthermore, throughout the instruction manual, when referred to as a "plane," it means the view of the target portion from above; when referred to as a "cross section," it means the view of the target portion from the side of a vertically cut cross section.

[0046] Figure 1 This is an exploded perspective view of a battery pack according to an embodiment of the present disclosure. Figure 2 It shows the air in Figure 1A 3D view of the moving state within the battery pack. Figure 3 It is shown that it includes Figure 1 A 3D view of the individual battery cells in the battery pack. Figure 4 This is a perspective view showing a single module assembly according to an embodiment of the present disclosure.

[0047] Reference Figures 1 to 4 According to one embodiment of the present disclosure, a single-cell module assembly 100 includes: a battery cell stack 120, wherein a plurality of battery cells 110 are stacked thereon, the plurality of battery cells including electrode leads 111, 112 protruding in opposite directions to each other; a retaining strap 125 for securing the battery cell stack 120; and a busbar frame 150 disposed on a surface of the battery cell stack 120 in the direction (x-axis direction) in which the electrode leads 111 protrude.

[0048] First, refer to Figure 3 The battery cell 110 is preferably a pouch-type battery cell. For example, the battery cell 110 according to this embodiment has a structure in which two electrode leads 111, 112 face each other and each protrude from one end 114a and the other end 114b of the cell body 113, respectively. More specifically, the electrode leads 111, 112 are connected to an electrode assembly (not shown) and protrude from the electrode assembly (not shown) to the outside of the battery cell 110.

[0049] Simultaneously, the battery cell 110 can be manufactured by attaching two ends 114a, 114b and one side 114c connecting them to the cell housing 114 while the electrode assembly (not shown) is stored in the cell housing 114. In other words, the battery cell 110 according to this embodiment has a total of three sealing portions 114sa, 114sb, 114sc, wherein the sealing portions 114sa, 114sb, 114sc have a structure that is sealed by a method such as thermal fusion, and the remaining side can be formed by a connecting portion 115. The cell housing 114 can be made of a laminate including a resin layer and a metal layer.

[0050] Furthermore, the connecting portion 115 may extend relatively long along one edge of the battery cell 110, and a protrusion 110p, referred to as a battery ear, may be formed at the end of the connecting portion 115. Additionally, while the cell housing 114 is sealed between the protruding electrode leads 111 and 112, a platform portion 116 may be formed between the electrode leads 111 and 112 and the cell body 113. In other words, the battery cell 110 includes a platform portion 116 extending from the cell housing 114 in the direction in which the electrode leads 111 and 112 protrude.

[0051] According to this embodiment, the upper and lower ends of the battery cell 110 can respectively correspond to a side portion 114c and a connecting portion 115 for connecting the two ends 114a and 114b of the cell housing 114. The upper and lower ends of the battery cell 110 can be portions subjected to edge cooling, as described later.

[0052] The battery cells 110 can be configured in multiple quantities, and multiple battery cells 110 can be stacked to be electrically connected to each other, thereby forming a battery cell stack 120. (See reference...) Figure 3 and Figure 4 Battery cells 110 can be stacked along the y-axis to form a battery cell stack 120. A busbar frame 150 can be located on one surface of the battery cell stack 120 in the direction in which the electrode leads 111 protrude (x-axis direction). Although not specifically shown in the figures, the busbar frame can also be located on another surface of the battery cell stack 120 in the direction in which the electrode leads 112 protrude (-x-axis direction). The battery cell stack 120 and the busbar frame 150 can form a cell module assembly 100, and a retaining strap 125 can prevent the flow of battery cells 110 included in the battery cell stack 120. The cell module assembly 100 according to this embodiment can be formed in a structure in which the module frame and end plates are removed. As an alternative to the module frame, the cell module assembly 100 according to this embodiment may include a cover plate 300 and a retaining strap 125.

[0053] Because the module frame and endplates are removed, complex processes requiring precise control, such as storing the battery cell stack 120 inside the module frame or assembling the module frame and endplates, are eliminated. Furthermore, this embodiment has the advantage that the weight of the individual module assembly 100 can be significantly reduced relative to the amount of the removed module frame and endplates. Moreover, due to the removal of the module frame, the individual module assembly 100 according to this embodiment has the advantage of excellent reprocessing capability during battery pack assembly, which is significant compared to conventional designs where reprocessing is impossible when defects occur in the welded structure of the module frame.

[0054] The cover plate 300 is a plate-shaped member and is located on both side surfaces of the battery cell stack 120, thereby supplementing the rigidity of the cell module assembly 100. This cover plate 300 may comprise a plastic material with elastic properties produced by injection molding, and in some cases, a leaf spring material may be used.

[0055] The retaining straps 125 are components that surround the battery cell stack 120 at both ends of the battery cell stack 120 and can be used to secure the plurality of battery cells 110 constituting the battery cell stack 120 and the cover plate 300. Specifically, grooves are formed on one surface of the cover plate 300, and after the ends of the retaining straps 125 are placed in the grooves, the ends of the retaining straps 125 and the cover plate 300 can be connected via a fixing member (not shown). Two pairs of retaining straps 125 can be applied to a single cell module assembly 100, wherein one pair of retaining straps 125 surrounds the upper part of the single cell module assembly 100 (in Figure 4 (Observing the surface of the single module assembly along the -z axis), another pair of retaining straps 125 surround the lower part of the single module assembly 100 (in Figure 4 (Observe the surface of the single module component along the z-axis).

[0056] The retaining band 125 can be made of a material with predetermined elasticity, and specifically, a leaf spring structure can be applied. The retaining band 125 can be formed of a metal strip.

[0057] After securing the cell stack 120 and cover plate 300 in this manner via retaining strap 125, busbar frame 150 can be positioned on the front and rear surfaces of the cell stack 120 corresponding to the protruding direction of the electrode leads 111. Grooves for fastening the retaining member 155 can be formed at the end of the cover plate 300 that overlaps with the busbar frame 150. The busbar frame 150 and cover plate 300 can be connected via the retaining member 155 to form a cell module assembly 100.

[0058] Reference Figure 1 The battery pack according to this embodiment includes: a cell module assembly 100, including a cell stack 120 containing a plurality of cell units 110 and a busbar frame 150 covering both side surfaces of the cell stack 120; a battery pack frame 350 on which the cell module assembly 100 is mounted; a cover plate 300 located on both side surfaces of the cell stack 120 in the stacking direction of the cell units 110; and a cover assembly 200 for covering the cover plate 300. A terminal cover 220 for covering the terminal portion (not shown) can be connected to the cover assembly 200.

[0059] The battery pack frame 350 may include a bottom frame 400, an upper frame 500, and a side surface frame 570. The bottom frame 400 faces the lower part of the individual module assembly 100, the upper frame 500 covers the upper part of the individual module assembly 100, and the side surface frame 570 may surround the left and right surfaces of the individual module assembly 100. According to this embodiment, the side surface frame 570 may be arranged to face the busbar frame 150.

[0060] According to this embodiment, the upper frame 500 and the side surface frame 570 can be integrally formed.

[0061] Figure 4 At least two individual module components 100 are arranged along the y-axis direction, and the individual module components 100 can be mounted on the bottom frame 400 of the battery pack frame. Figure 1 The configuration of four individual module components 100 is shown, but the configuration structure is not limited to this.

[0062] In the battery pack according to this embodiment, an insulating plate 550 may be arranged between the bottom frame 400 and the individual module assembly 100. In this case, the lower part of the individual module assembly 100 may contact the upper part of the insulating plate 550. The insulating plate 550 is configured to maintain electrical insulation between the battery cell 110 included in the individual module assembly 100 and the bottom frame 400.

[0063] According to this embodiment, the cover plate 300 is formed in the stacking direction of the battery cells 110 in the battery cell stack 120. Figure 1 The battery cell stack 120 is covered on two side surfaces spaced apart from each other along the y-axis.

[0064] According to this embodiment, the cover assembly 200 can be formed in the stacking direction of the battery cells 110 in the single-cell module assembly 100. Figure 1 The cover plate 300 is thus covered on two side surfaces spaced apart from each other along the y-axis direction. The first side surface of the battery cell stack 120 on which the cover assembly 200 is formed and the second side surface of the battery cell stack on which the busbar frame 150, included in the cell module assembly 100, is formed can intersect each other. In other words, based on the cell module assembly 100, the side surface on which the cover assembly 200 is formed and the side surface on which the busbar frame 150 is formed can be perpendicular to each other.

[0065] According to this embodiment, the cover assembly 200 may have an inlet 250 and an outlet 260. External air flows in through the inlet, and air passing through the monolithic module assembly 100 is discharged through the outlet. Specifically, the inlet 250 is formed in the cover assembly 200 covering one side surface of the monolithic module assembly 100, and the outlet 260 is formed in the cover assembly 200 covering the other side surface of the monolithic module assembly 100. According to this embodiment, when viewed in a plan view, the inlet 250 and outlet 260 may be arranged diagonally opposite each other. Here, when viewed in a plan view, it can refer to the arrangement along... Figure 2 The arrangement of the battery pack when viewed along the z-axis.

[0066] Figure 5 It shows along Figure 1 The front view of the busbar frame as viewed along the -x axis.

[0067] Reference Figure 5 According to this embodiment, the busbar frame 150 can be located on one surface of the battery cell stack 120, thereby covering the battery cell stack 120 and simultaneously guiding the connection between the battery cell stack 120 and an external device. For example, the busbar frame 150 may be equipped with a busbar 130, a terminal busbar (not shown), and an internal busbar (not shown). The battery cells 110 included in the battery cell stack 120 can be connected in series or parallel via the busbar 130, the terminal busbar, or the internal busbar, and the battery cells 110 can be electrically connected to external devices or circuits via the terminal busbars exposed outside the cell module assembly 100.

[0068] The busbar frame 150 may include an electrically insulating material. Except for the portion of the busbar 130 or terminal busbar that is engaged with the electrode leads 111, 112, the busbar frame 150 may prevent the busbar 130 or terminal busbar from contacting the battery cell 110, thereby preventing a short circuit.

[0069] According to this embodiment, at least one hole 150H may be formed in the busbar frame 150. External air passes through an inlet 250 (e.g., in the battery pack according to this embodiment) included in the battery pack. Figure 2 After flowing into the battery pack frame 350 (as shown), air can flow through holes 150H formed in the busbar frame 150 into the spaces formed at the upper and / or lower parts of the battery cell stack 120. Air flowing in this manner can be used as a refrigerant to cool the heat generated in the battery cells 110. The refrigerant movement path and the process of cooling the battery cells 110 according to this embodiment will be described later.

[0070] According to this embodiment, the hole 150H may include a height formed in Figure 5 The intermediate hole 150MH in the middle part and the lower hole 150LH formed in the lower part of the busbar frame 150.

[0071] Next, we will refer to Figure 2 and Figure 6 The refrigerant movement path and battery cell cooling process according to one embodiment of the present disclosure are described.

[0072] Figure 6 It shows the air along Figure 1 A cross-sectional view of the state of movement on the section cut by the zx plane.

[0073] Reference Figure 2 and Figure 6External air can flow into the battery pack frame 350 through inlet 250. The air flowing in through inlet 250 can flow along one side surface of the individual module assembly 100. As an example, the air flowing in through inlet 250 can move along a first airflow path F1. The first airflow path F1 can be formed in a straight line with the direction forming inlet 250. The direction in which air flows in through inlet 250 corresponds to... Figure 2 In the y-axis direction, the first airflow path F1 can extend along the y-axis direction.

[0074] Air flowing into the first airflow path F1 can enter the space between the battery pack frame 350 and the individual module assembly 100 through the intermediate hole 150MH and the lower hole 150LH formed in the manifold frame 150. The space between the battery pack frame 350 and the individual module assembly 100 can correspond to the gaps 350G formed between the upper frame 500 of the battery pack frame and the upper part of the individual module assembly 100, and between the bottom frame 400 of the battery pack frame and the lower part of the individual module assembly 100. In this case, both the gap 350G formed between the upper frame 500 of the battery pack frame and the upper part of the individual module assembly 100, and the gap 350G formed between the bottom frame 400 of the battery pack frame and the lower part of the individual module assembly 100, can be the second airflow path F2.

[0075] Therefore, the air flowing into the first airflow path F1 can flow back into the second airflow path F2, thereby cooling the edge portion 110E of the battery cell 110. The edge portion 110E of the battery cell 110 can correspond to the upper end and lower end of the battery cell 110, as shown in reference. Figure 3 As stated above.

[0076] like Figure 6 As shown, the second airflow path F2 at the upper end of the battery cell 110 can store air flowing in through the empty space between the busbar frame 150 and the upper frame 500 of the battery pack frame, as well as air flowing in through the central hole 150MH. That is, the upper part of the busbar frame 150 and the upper frame 500 of the battery pack frame can be spaced apart from each other.

[0077] The second airflow path F2 at the lower end of the battery cell 110 can store air flowing in through the intermediate hole 150MH and air flowing in through the lower hole 150LH. At this time, the battery cell stack 120 is spaced apart from the bottom frame 400 to form the second airflow path F2 at its lower end. If the insulating plate 550 is inserted between the bottom frame 400 and the battery cell stack 120, the battery cell stack 120 can be spaced apart from the insulating plate 550. Therefore, the lower end of the busbar frame 150 can directly contact the bottom frame 400 of the battery pack frame. In other words, the bottom level of the busbar frame 150 can be lower than the bottom level of the battery cell stack 120.

[0078] According to this embodiment, as air from the first airflow path F1 moves to the second airflow path F2 through the central hole 150MH and the lower hole 150LH formed in the busbar frame 150, the air can directly contact the electrode leads 111 and 112 protruding from the battery cell 110. The portion of the electrode leads 111 and 112 that directly contacts the air can be the electrode lead portion located in the space between the busbar frame 150 and the battery cell stack 120. This electrode lead portion can be different from... Figure 5 The electrode lead portion, as shown, protrudes to the outside of the busbar frame 150 and joins to the busbar 130. Therefore, according to this embodiment, air used to cool the edge portion 110E of the battery cell can flow in sufficiently through the holes 150H in the busbar frame 150, thereby improving cooling efficiency. Furthermore, considerable heat may be generated in the portions of the electrode leads 111 and 112 that protrude from the battery cell 110 while located inside the busbar frame 150. Cooling efficiency can be further improved by allowing air to pass through these areas for cooling.

[0079] Because the space between the busbar frame 150 and the battery pack frame 350 is insufficient, the amount of air flowing in through the empty space between the busbar frame 150 and the upper frame 500 of the battery pack frame is relatively small. Therefore, the air flowing in through the intermediate hole 150MH and the lower hole 150LH formed according to this embodiment can enhance the cooling efficiency of the edge portion 110E of the battery cell 110.

[0080] As air moves along the edge 110E of the cell, it absorbs heat from the cell 110, and the warmed air is discharged into the third airflow path F3 through the central hole 150MH and the lower hole 150LH formed in the busbar frame 150 adjacent to the outlet 260. The air flowing into the third airflow path F3 can be discharged to the outside of the battery pack frame 350 via the outlet 260.

[0081] The third airflow path F3 can be formed in a straight line with the direction forming the outlet 260. The direction in which air is discharged through the outlet 260 corresponds to... Figure 2 In the y-axis direction, the third airflow path F3 can extend along the y-axis direction.

[0082] According to this embodiment, the first airflow path F1 and the third airflow path F3 are formed in the same direction as the stacking direction of the battery cell 110, and the second airflow path F2 can be formed in a direction perpendicular to the stacking direction of the battery cell 110.

[0083] The battery module and battery pack including the battery module, as described above, can be applied to various devices. Specifically, such devices can be applied to transportation vehicles, such as electric bicycles, electric vehicles, and hybrid electric vehicles. However, this disclosure is not limited thereto, and can be applied to various devices capable of using the battery module and battery pack including the battery module, which also fall within the scope of this disclosure.

[0084] Although preferred embodiments of the present disclosure have been shown and described above, the scope of the disclosure is not limited thereto, and those skilled in the art can make many other variations and modifications to the embodiments using the basic principles of the invention as defined in the appended claims, which also fall within the spirit and scope of the invention.

[0085] 100: Monolithic module component

[0086] 110E: Edge

[0087] 120: Battery cell stack

[0088] 150H: Hole

[0089] 155: Fixed component

[0090] 200: Cover component

[0091] 250: Entrance

[0092] 260: Exports

[0093] 300: Cover plate

[0094] 350: Battery pack frame

[0095] 350G: Gap

Claims

1. A battery pack, comprising: A single-cell module assembly includes a stack of battery cells and a busbar frame. The stack of battery cells comprises multiple stacked battery cells, and the busbar frame covers both side surfaces of the stack of battery cells. A battery pack frame, on which the individual module components are mounted. Wherein, gaps are formed between the upper end of the battery pack frame and the upper end of the individual module assembly, and between the lower end of the battery pack frame and the individual module assembly, and Air flows into the gap through holes formed in the busbar frame to cool the edges of the battery cell.

2. The battery pack according to claim 1, It also includes cover assemblies, each cover assembly covering two side surfaces of the single-cell module assembly that are spaced apart from each other in the stacking direction of the battery cells. in, Each of the cover assemblies has an inlet and an outlet, through which outside air flows in and through which air passing through the individual module assembly is discharged.

3. The battery pack according to claim 2, in, Air flowing into the inlet flows along one side surface of the monolithic module assembly, flows into the gap through the holes formed in the manifold frame, and exits through the outlet.

4. The battery pack according to claim 3, in, When viewed in a plan view, the entrance and the exit are arranged diagonally opposite each other.

5. The battery pack according to claim 3, comprising: The first airflow path is formed in a straight line with the direction in which the inlet is formed; A second airflow path is formed between the battery pack frame and the individual module assembly; as well as The third airflow path is formed in a straight line with the direction in which the outlet is formed. The first airflow path and the third airflow path are formed in the same direction as the stacking direction of the battery cell, and the second airflow path is formed in a direction perpendicular to the stacking direction of the battery cell.

6. The battery pack according to claim 5, in, The second airflow path corresponds to the gap through which air flows in through the holes formed in the manifold frame.

7. The battery pack according to claim 2, in, The first side surface of the battery cell stack on which the cover assembly is formed and the second side surface of the battery cell stack on which the busbar frame is formed intersect each other.

8. The battery pack according to claim 7, It also includes a cover plate located between the cover assembly and the first side surface of the battery cell stack.

9. The battery pack according to claim 1, in, Air flowing in through the holes formed in the busbar frame cools the electrode leads protruding from the battery cell by coming into direct contact with them.

10. The battery pack according to claim 9, in, The portion of the electrode lead that comes into contact with the air flowing in through the orifice is located in the space between the busbar frame and the battery cell stack.

11. The battery pack according to claim 9, in, The holes include a central hole formed in the middle portion of the busbar frame and a lower hole formed in the lower portion of the busbar frame, and Air flowing in through the central hole comes into direct contact with the electrode leads.

12. The battery pack according to claim 1, It also includes an insulating plate located between the bottom of the battery pack frame and the individual module assembly.

13. The battery pack according to claim 1, in, The battery pack frame includes: The bottom frame faces the lower part of the single-unit module component. The upper frame covers the upper part of the single-unit module component, and Side surface frames surround the left and right surfaces of the monolithic module assembly. The side surface frame surrounds the busbar frame.

14. The battery pack according to claim 13, in, The upper end of the busbar frame and the upper frame of the battery pack frame are spaced apart from each other, and the lower end of the busbar frame and the bottom frame of the battery pack frame are in direct contact with each other.

15. An apparatus comprising at least one battery pack according to claim 1.

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