Battery pack and device including the battery pack

Abstract

A battery pack according to one embodiment of the present disclosure includes: a lower battery pack housing having a plurality of module areas; a thermally conductive resin layer applied to the lower battery pack housing within the module areas; a plurality of battery cell stacks mounted on the thermally conductive resin layer in each of the plurality of module areas; and an upper battery pack housing for covering the plurality of battery cell stacks.

Description

Technical Field

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Korean Patent Application No. 10-2020-0086792, filed on July 14, 2020, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.

[0003] The present disclosure relates to a battery pack and a device including the same, and more particularly, to a battery pack having improved productivity and a device including the same. Background Art

[0004] As the technology of mobile devices develops and the demand increases, the demand for secondary batteries as energy sources is also rapidly growing, and thus, many studies on batteries that can meet various demands are emerging.

[0005] Secondary batteries have received widespread attention as energy sources for power-driven devices such as electric bicycles, electric vehicles, hybrid electric vehicles, and for mobile devices such as mobile phones, digital cameras, and laptop computers.

[0006] Small mobile devices use one or more 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.

[0007] Medium- or large-sized battery modules are preferably manufactured to be as small and light as possible. To this end, prismatic cells, pouch-shaped cells, and the like, which can be stacked with high integration and have a low weight relative to their capacity, are often used as the battery cells for medium- or large-sized battery modules. Furthermore, to protect the battery cell stack from external shock, heat, or vibration, the battery module may include a module frame with open front and rear surfaces to house the battery cell stack within its interior.

[0008] Figure 1 is a perspective view showing a hole formed in the bottom of a frame in a conventional battery module. Figure 2 It shows Figure 1 A three-dimensional image of a battery module turned upside down. Figure 3 It is along Figure 1 A cross-sectional view taken along the cutting line AA. Figure 4 It shows Figure 2 A view of the status of the battery module and radiator combination.

[0009] refer to Figures 1 to 3In order to protect the battery cell stack 15 from external impact, heat or vibration, the battery module may include a module frame 10 having a front surface and a rear surface opened to accommodate the battery cell stack 15 in an internal space. The module frame 10 has a top 12 and a bottom 11. Figure 1 , which shows Figure 2 In a state where the battery module is turned upside down, the liquid injection hole 20 may be formed in the bottom 11 of the module frame 10 .

[0010] The thermally conductive resin may be injected between the battery cell stack 15 and the bottom 11 of the module frame 10 through the liquid injection hole 20 to form a Figure 3 The thermally conductive resin layer 40 is shown.

[0011] The thermally conductive resin layer 40 can transfer heat generated in the battery cell stack 15 to the outside of the battery module. An inspection hole 30 is also formed in the bottom 11 of the module frame 10. When injecting the thermally conductive resin, excess thermally conductive resin can be discharged to the outside of the battery module through the inspection hole 30, thereby confirming the injection amount.

[0012] Figure 1 The battery module is shown flipped 180 degrees to inject thermal conductive resin. Figure 3 As shown, the components inside the battery module may move downward due to gravity. The battery cell stack 15, which is an aggregate formed by stacking a plurality of battery cells 14, is installed inside the battery module, and the battery cell stack 15 moves downward due to gravity. Therefore, the space in which the thermally conductive resin can be injected is wider than the space originally designed. At this time, the thermally conductive resin is injected, and the amount of thermally conductive resin filling the space between the bottom 11 and the battery cell stack 15 may increase more than necessary. Therefore, reverse discharge may occur, or quality problems of the battery module may occur due to uncuring.

[0013] refer to Figure 4 , Figure 2 The battery module can be combined with a heat sink 60 to cool the heat generated by the battery cells 14 to form a battery pack. Heat sink 60 includes an inlet for coolant flow, an outlet for coolant flow, a lower plate 62 having a cooling flow path connecting the inlet and outlet, and an upper plate 61 covering lower plate 62. A heat transfer member 50 may be further formed between the bottom 11 of the battery module and heat sink 60.

[0014] The heat generated from the battery cells 14 passes through the thermally conductive resin layer 40, the bottom 11 of the module frame 10, the heat transfer member 50, and the heat sink 60 located on the lower surface of the bottom 11 in this order, and is then transferred to the outside of the battery module. However, in this case, the heat transfer path becomes complicated, making it difficult to effectively transfer the heat generated from the battery cells 14. The module frame 10 itself may reduce the heat transfer characteristics, and fine air layers (such as air gaps) that may form between each of the module frame 10, the heat transfer member 50, and the heat sink 60 may also contribute to the deterioration of the heat transfer characteristics.

[0015] In addition, return reference Figure 2 The end plates 25 can be formed to cover the front surface (x-axis direction) and the rear surface (opposite to the x-axis) of the battery cell stack 15. The end plates 25 physically protect the battery cell stack 15 and other electrical components from external impacts. The battery modules can be secured to the pack frame via module mounting structures 28 located at the outermost portions of the end plates 25 in a direction parallel to the y-axis, thereby forming a battery pack. Such module mounting structures 28 require fastening members (such as bolts), which may reduce productivity. Summary of the Invention

[0016]

Technical Issues

[0017] An object of the present disclosure is to provide a battery pack that improves cooling efficiency and productivity by simplifying a production process, and a device including the battery pack.

[0018] However, the technical problems to be solved by the embodiments of the present disclosure are not limited to the problems described above, and can be variously extended within the scope of the technical concept included in the present disclosure.

[0019]

Technical Solution

[0020] According to one embodiment of the present disclosure, a battery pack is provided, comprising: a lower battery pack housing having a plurality of module areas; a thermally conductive resin layer applied to the lower battery pack housing within the module areas; a plurality of battery cell stacks mounted on the thermally conductive resin layer in each of the plurality of module areas; and an upper battery pack housing for covering the plurality of battery cell stacks.

[0021] The plurality of module areas are partitioned by a plurality of partition walls formed in a lower pack case, and the partition walls may be located between adjacent battery cell stacks among the plurality of battery cell stacks.

[0022] The thermally conductive resin layer includes a first thermally conductive resin layer and a second thermally conductive resin layer, the plurality of module regions include a first region and a second region separated from each other by a partition wall, the first thermally conductive resin layer is formed to correspond to the first region, and the second thermally conductive resin layer is formed to correspond to the second region.

[0023] The first thermally conductive resin layer and the second thermally conductive resin layer may be arranged separately from each other.

[0024] The battery pack may include a thermal paste layer applied to the plurality of battery cell stacks.

[0025] The thermal paste layer may include an adhesive component that bonds the upper battery pack case and the battery cell stack.

[0026] First and second battery cell stacks are mounted in each of the first and second regions of the plurality of module regions, and a height of the partition wall may be higher than heights of side surfaces of the first and second battery cell stacks.

[0027] The battery cell stack includes a plurality of battery cells stacked along a first direction, and the battery cell stack may further include an adhesive member between the battery cells adjacent to each other along the first direction.

[0028] The thermally conductive resin layer may include an adhesive component that bonds the lower pack case and the battery cell stack.

[0029] The battery pack may further include a heat dissipation layer located between the lower pack case and the thermally conductive resin layer.

[0030] The battery pack also includes: electrode leads, which respectively protrude from the battery cells included in the battery cell stack; and an insulating cover, which is used to cover the front and rear surfaces of the battery cell stack, from which the electrode leads protrude, wherein the insulating cover can face the battery pack housing downward.

[0031] A terminal bus bar opening is formed in the insulation cover, through which the terminal bus bar is connected to the outside, and may be formed at an outermost portion of the insulation cover with respect to a stacking direction of a plurality of battery cells included in the battery cell stack.

[0032] According to one embodiment of the present disclosure, there is provided a device including the above-mentioned battery pack.

[0033]

Beneficial effects

[0034] According to one embodiment of the present disclosure, battery cells are directly assembled into a battery pack housing without a module frame structure, so that heat transfer performance can be improved, and battery cells are directly assembled into a battery pack instead of assembling the battery pack after assembling the modules, so that production efficiency can be improved by simplifying the assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a perspective view showing a hole formed in the bottom of a frame in a conventional battery module;

[0036] Figure 2 It shows Figure 1 A three-dimensional diagram of a battery module in an upside-down state;

[0037] Figure 3 It is along Figure 1 A cross-sectional view taken along the cutting line AA;

[0038] Figure 4 It shows Figure 2 A view showing the state of the battery module and radiator combination;

[0039] Figure 5 is a perspective view of a battery module according to one embodiment of the present disclosure;

[0040] Figure 6 yes Figure 5 An exploded perspective view of a battery module;

[0041] Figure 7 yes Figure 5 A perspective view of a battery cell included in a battery module;

[0042] Figure 8 It shows Figure 5 A perspective view of an insulating cover included in a battery module;

[0043] Figure 9 is an exploded perspective view of a battery pack according to another embodiment of the present disclosure; and

[0044] Figure 10 Shows the xz plane along Figure 9 A portion of the cross-sectional view taken in the x-axis direction. DETAILED DESCRIPTION

[0045] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. The present disclosure can be modified in various ways and is not limited to the embodiments set forth herein.

[0046] Parts irrelevant to the description will be omitted to clearly describe the present disclosure, and the same reference numerals denote the same elements throughout the specification.

[0047] In addition, in the drawings, for the convenience of description, the size and thickness of each element are arbitrarily shown, and the present disclosure is not necessarily limited to what is shown in the drawings. In the drawings, the thickness of layers, regions, etc. are exaggerated for clarity. In the drawings, the thickness of some layers and regions is exaggerated for the convenience of description.

[0048] Furthermore, it should be understood that when an element (such as a layer, film, region, or plate) is referred to as being "on" or "over" another element, the element can be directly on the other element or intervening elements may be present. Conversely, when an element is referred to as being "directly on" another element, this means that no other intervening elements are present. Furthermore, "on" or "above" refers to being disposed above or below the referenced portion and does not necessarily mean being disposed "on" or "above" the referenced portion in an opposite direction of gravity.

[0049] In addition, throughout the specification, when a part is referred to as “including” a certain component, unless otherwise specified, it means that the part may further include other components, rather than excluding other components.

[0050] Furthermore, throughout the specification, when referred to as a “plane”, this means when the target portion is viewed from the upper side, and when referred to as a “cross section”, this means when the target portion is viewed from one side of a vertically cut cross section.

[0051] Figure 5 is a perspective view of a battery module according to one embodiment of the present disclosure. Figure 6 yes Figure 5 An exploded perspective view of the battery module. Figure 7 yes Figure 5 A three-dimensional view of a battery cell included in a battery module.

[0052] refer to Figures 5 to 7 , a battery module 100 according to one embodiment of the present disclosure includes a battery cell stack 200 in which a plurality of battery cells 110 are stacked.

[0053] First, the battery cell 110 is preferably a pouch-type battery cell and can be formed into a rectangular sheet structure. For example, the battery cell 110 according to the present embodiment includes two electrode leads 111 and 112, and the electrode leads 111 and 112 point in opposite directions relative to the cell body 113. The electrode leads 111 and 112 have the following structure: the electrode leads 111 and 112 protrude from one end 114a and the other end 114b of the cell body 113, respectively. More specifically, the electrode leads 111 and 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. One of the two electrode leads 111 and 112 can be a positive electrode lead 111, and the other electrode lead can be a negative electrode lead 112. That is, the positive electrode lead 111 and the negative electrode lead 112 can protrude to face opposite directions relative to one battery cell 110.

[0054] Meanwhile, in a state where the electrode assembly (not shown) is housed in the cell case 114, the battery cell 110 can be manufactured by combining both ends 114a and 114b of the cell case 114 with one side portion 114c connecting the two ends 114a and 114b. In other words, the battery cell 110 according to this embodiment has a total of three sealing portions having a structure sealed by a method such as heat fusion, and the other side portion can be composed of a connecting portion 115. The cell case 114 can be composed of a laminated sheet including a resin layer and a metal layer.

[0055] Such a battery cell 110 may be formed in plural, and the plurality of battery cells 110 are stacked to be electrically connected to each other, thereby forming a battery cell stack 200. In particular, as Figure 7 As shown, the plurality of battery cells 110 may be stacked along the x-axis direction as a first direction. Therefore, the electrode leads 111 and 112 may protrude in the y-axis direction and the −y-axis direction, respectively.

[0056] At the same time, with reference Figures 1 to 4Unlike the conventional battery module described above, the battery module 100 according to an embodiment of the present disclosure forms a module-free structure in which the module frame and the end plate made of a metal material are removed. Instead of the module frame, the battery module 100 according to the present embodiment may include a side panel 600 and a retaining band 700. Since the module frame and the end plate are removed, complex processes that require precise control (such as the process of accommodating the battery cell stack 200 inside the module frame, or the process of assembling the module frame and the end plate) are not necessary. In addition, there is an advantage in that the weight of the battery module 100 can be significantly reduced simply by removing the module frame and the end plate. In addition, the battery module 100 according to the present embodiment may have the following advantages: since the module frame is removed, reworkability is advantageous in the battery pack assembly process. In contrast, even if defects occur due to the welding structure of the module frame, the conventional battery module cannot be reworked.

[0057] The side panels 600 are plate-shaped members and may be disposed on both side surfaces of the battery cell stack 200 to supplement the rigidity of the battery module 100. Such side panels 600 have elastic properties and may include a plastic material manufactured by injection molding, and in some cases, a leaf spring material may be applied.

[0058] The retaining bands 700 are members that wrap around the battery cell stack 200 at both ends thereof and may have the function of securing the plurality of battery cells 110 and the side panels 600 that constitute the battery cell stack 200. After securing the battery cell stack 200 and the side panels 600 via the retaining bands 700 in this manner, the insulating cover 400 may be positioned on the front and rear surfaces of the battery cell stack 200 in accordance with the directions in which the electrode leads 111 and 112 protrude. Such retaining bands 700 may be formed of a material having a predetermined elastic force, and specifically, a leaf spring structure may be employed.

[0059] Figure 8 It shows Figure 5 A three-dimensional view of an insulating cover included in a battery module.

[0060] refer to Figure 6 and Figure 8 The battery module 100 according to this embodiment may include an insulating cover 400 that covers the front and rear surfaces of the battery cell stack 200, from which the electrode leads 111 and 112 protrude. The insulating cover 400 may be made of an electrically insulating material, such as a plastic material, a polymeric material, or a composite material. Furthermore, the insulating cover 400 may be formed in a basket shape to cover the front and rear surfaces of the battery cell stack 200.

[0061] As described above, in the battery module 100 according to the present embodiment, the end plate and the busbar frame can be removed, and an insulating cover 400 can be provided instead. On the other hand, the electrode leads of the battery cells 110 located outside the battery cell stack 200 can be electrically connected to the terminal busbar 500. Unlike conventional battery modules in which the electrode leads are connected to each other via busbars, the electrode leads 111 and 112 according to the present embodiment are directly coupled to each other, and a portion of the electrode leads 111 and 112 are electrically connected to the terminal busbar 500, thereby forming an HV (high voltage) connection. Therefore, in the HV connection structure according to the present embodiment, the busbar and the busbar frame on which the busbar is mounted can be removed. Here, the HV connection plays the role of a power source for supplying electric power, and refers to the connection between battery cells and the connection between battery modules.

[0062] On the other hand, the insulating cover 400 according to this embodiment can guide the external connection between the LV connector 310 and the terminal bus bar 500, rather than a structure made of a metal end plate or the like. Specifically, the insulating cover 400 can be formed with a connector opening 440 for guiding the external connection of the LV connector 310 (i.e., the LV (low voltage) connection) and can also form a terminal bus bar opening 450 for guiding the external connection of the terminal bus bar 500, i.e., the HV connection. Here, the LV connection refers to a sensing connection for sensing and controlling the voltage of the battery cell.

[0063] The insulating cover 400 can ensure insulation performance by preventing contact with external conductive objects during LV and HV connections. In addition, during the HV connection process, bolts and nuts can be fastened through the through holes formed in the terminal bus bar 500. The terminal bus bar opening 450 formed in the insulating cover 400 can serve as a guide in which the bolts and nuts can be properly fastened.

[0064] According to the present embodiment, the terminal bus bar opening 450 can be located at the outermost portion of the insulating cover 400 relative to the stacking direction of the plurality of battery cells 110 included in the battery cell stack 200. Conventionally, since the module mounting structure for connecting to the battery pack frame is formed on the outermost portion of the insulating cover or on an end plate made of a metal material, there are limitations on the formation position of the terminal bus bar opening 450. However, according to the present embodiment, instead of the module mounting structure, the battery cell stack 200 can be fixed by a thermally conductive resin layer applied to the bottom of the lower battery pack case as described later. Therefore, by eliminating the module mounting structure, the terminal bus bar opening 450 can be formed at the outermost portion of the insulating cover 400.

[0065] Figure 9 is an exploded perspective view of a battery pack according to another embodiment of the present disclosure.

[0066] refer to Figure 9 A battery pack 1000 according to one embodiment of the present disclosure may include a battery module 100 , a pack frame 1100 for accommodating the battery module 100 , and a thermally conductive resin layer 1200 between the battery module 100 and a bottom 1111 of the pack frame 1100 .

[0067] First, the battery module 100 includes the insulating cover as described above, and alternatively may form a module-free structure with the module frame and end plates removed. A plurality of such battery modules 100 may be housed in a pack frame 1100 to form a battery pack 1000.

[0068] The battery pack frame 1100 may include a lower battery pack housing 1110 and an upper battery pack housing 1120 covering the lower battery pack housing 1110, and a plurality of battery modules 100 may be arranged on a bottom 1111 of the lower battery pack housing 1110. The lower battery pack housing 1110 has a plurality of module areas, and the plurality of module areas may be separated by a plurality of partition walls 1350 formed in the lower battery pack housing 1110. The partition walls 1350 are formed between adjacent battery modules 100 among the plurality of battery modules 100. For example, the thermally conductive resin layer 1200 includes a first thermally conductive resin layer and a second thermally conductive resin layer adjacent to each other, and the plurality of module areas include a first area and a second area separated from each other by the partition wall 1350. The first thermally conductive resin layer is formed to correspond to the first area, and the second thermally conductive resin layer may be formed to correspond to the second area. In this case, the first thermally conductive resin layer and the second thermally conductive resin layer may be arranged separately from each other by the partition wall 1350.

[0069] Meanwhile, the thermally conductive resin layer 1200 may be formed by applying a thermally conductive resin to the bottom 1111 of the lower battery pack housing 1110. The thermally conductive resin may include a thermally conductive adhesive material, and specifically, may include at least one of a silicone material, a polyurethane material, and an acrylic material. The thermally conductive resin is liquid during application, but solidifies after application, so that the thermally conductive resin may serve to fix the battery module 100 to the lower battery pack housing 1110. In addition, since the thermally conductive resin has excellent heat transfer properties, the heat generated from the battery cell 110 may be quickly transferred to the bottom 1111, thereby preventing overheating of the battery pack 1000. In the battery module 100 according to the present embodiment, since the module frame is eliminated, Figure 6The lower surface of the battery cell stack 200 can be directly mounted on the thermally conductive resin layer 1200 applied to the lower battery pack housing 1110. The lower surface of the battery cell stack 200 can be in contact with the thermally conductive resin layer 1200. At this time, the battery cell stack 200 can be fixed to the lower battery pack housing 1110 by the thermally conductive resin layer 1200 having adhesive properties. When no separate member or layer is added between the lower battery pack housing 1110 and the thermally conductive resin layer 1200, the lower battery pack housing 1110 can be in contact with the thermally conductive resin layer 1200.

[0070] like Figure 5 As shown, in the battery module 100 according to the present embodiment, in the module-free structure in which the module frame is removed, a portion of the battery cell 110 may be exposed to the outside, and for the sake of structural stability, it is necessary to fix the exposed battery cell 110. Therefore, the battery pack 1000 according to the present embodiment may form a thermally conductive resin layer capable of fixing the battery module 100 (particularly each battery cell 110 constituting the battery module 100) to the bottom 1111, thereby improving structural stability. In addition, by eliminating the module frame, the heat generated from the battery cell can be directly transferred from the thermally conductive resin layer to the battery pack frame, thereby improving cooling efficiency. Although not shown, a radiator structure may be formed on the battery pack frame.

[0071] Figure 10 Shows the xz plane along Figure 9 A portion of the cross-sectional view taken in the x-axis direction.

[0072] Figure 10 A battery pack according to another embodiment of the present disclosure is shown, and the battery pack 1000 according to this embodiment may further include a thermal paste layer 1300 applied to a plurality of battery cell stacks 200. The thermal paste layer 1300 may include an adhesive component for bonding the upper battery pack housing 1120 and the battery cell stack 200. The upper surface of the battery cell stack 200 may be in contact with the thermal paste layer 1300. If a separate member or layer is not added to the lower portion of the upper battery pack housing 1120, the upper battery pack housing 1120 may be in contact with the thermal paste layer 1300. In this case, the fixing force of the battery module according to this embodiment corresponding to the module-free structure may be further improved.

[0073] According to this embodiment, a side panel 600 may be formed between the battery module 100 and the partition wall 1350. The side panel 600 may face the side surface of the outermost battery cell 110 of the battery cell stack 200. The side panel 600 may be attached to at least one of the side surface of the outermost battery cell 110 of the battery cell stack 200 and the partition wall 1350.

[0074] Partition wall 1350 may be arranged between a first battery cell stack installed in a first region of the plurality of module regions and a second battery cell stack installed in a second region. In this case, the height of partition wall 1350 may be higher than the height of the side surfaces of first battery cell stack 200a and second battery cell stack 200b. Due to this height difference, thermal paste can be applied to desired portions of the upper portion of battery cell stack 200 to form thermal paste layer 1300, thereby enhancing adhesion.

[0075] In addition, the battery cell stack 200 may further include an adhesive member 120 positioned between adjacent battery cells 110. The fixing force of the battery cell stack 200, which may be weakened with the elimination of the module frame, can be enhanced by the adhesive member 120. Although not shown, the battery pack according to this embodiment may further include a heat dissipation layer positioned between the lower battery pack case 1110 and the thermally conductive resin layer 1200.

[0076] The battery module and the battery pack including the battery module mentioned above can be applied to various devices. Such devices can be applied to vehicle devices (such as electric bicycles, electric vehicles, or hybrid vehicles), but the present disclosure is not limited thereto and can be applied to various devices that can use battery modules, which also falls within the scope of the present disclosure.

[0077] Although the invention has been shown and described with reference to a preferred embodiment, the scope of the disclosure is not limited thereto, and numerous other modifications and embodiments can be devised by those skilled in the art that fall within the spirit and scope of the principles of the invention as described in the appended claims.

[0078] [Description of Reference Numerals]

[0079] 100: Battery module

[0080] 200: Battery cell stack

[0081] 400: Insulation cover

[0082] 450: Terminal busbar opening

[0083] 700: Holding belt

[0084] 1100: Battery pack frame

[0085] 1110: Lower battery pack housing

[0086] 1120: Upper battery pack housing

Claims

1. A battery pack comprising: a lower battery pack housing having a plurality of module areas, a thermally conductive resin layer applied to the lower battery pack housing in the module area, a plurality of battery cell stacks mounted on the thermally conductive resin layer in each of the plurality of module regions, and an upper battery pack housing, the upper battery pack housing being used to cover the plurality of battery cell stacks, in: The plurality of module areas are separated by a plurality of partition walls formed in the lower battery pack case and located between adjacent battery cell stacks among the plurality of battery cell stacks, The thermally conductive resin layer includes a first thermally conductive resin layer and a second thermally conductive resin layer. The plurality of module areas include a first area and a second area separated from each other by the partition wall, The first thermally conductive resin layer is formed to correspond to the first region, and the second thermally conductive resin layer is formed to correspond to the second region, The first thermally conductive resin layer and the second thermally conductive resin layer are arranged to be separated from each other by the partition wall, The battery pack further includes a thermal paste layer applied to the plurality of battery cell stacks.

2. The battery pack according to claim 1, wherein: The thermal paste layer includes an adhesive component that bonds the upper battery pack case and the battery cell stack.

3. The battery pack according to claim 2, wherein: A first battery cell stack and a second battery cell stack are mounted in each of the first region and the second region of the plurality of module regions, and The height of the partition wall is higher than the height of the side surface of the first battery cell stack and the height of the side surface of the second battery cell stack.

4. The battery pack according to claim 1, wherein: The battery cell stack includes a plurality of battery cells stacked along a first direction, and The battery cell stack further includes an adhesive member positioned between the battery cells adjacent to each other along the first direction.

5. The battery pack according to claim 1, wherein: The thermally conductive resin layer includes an adhesive component that bonds the lower pack case and the battery cell stack.

6. The battery pack according to claim 5, The battery pack further includes a heat dissipation layer located between the lower battery pack case and the thermally conductive resin layer.

7. The battery pack according to claim 1, further comprising: electrode leads respectively protruding from battery cells included in the battery cell stack, and an insulating cover for covering the front and rear surfaces of the battery cell stack, the electrode leads protruding from the front and rear surfaces of the battery cell stack, Wherein, the insulating cover faces the lower battery pack housing.

8. The battery pack according to claim 7, wherein: A terminal bus bar opening is formed in the insulation cover, and a terminal bus bar is connected to the outside of the insulation cover through the terminal bus bar opening, and The terminal bus bar opening is formed at an outermost portion of the insulation cover with respect to a stacking direction of a plurality of battery cells included in the battery cell stack.

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

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