Battery pack and device including the same

Abstract

The invention relates to a battery pack and an apparatus including the same. The battery pack includes: a lower pack case having a plurality of separated module regions; a thermally conductive resin layer that is applied to the lower pack case in the module region; a plurality of battery cell stacks mounted on the thermally conductive resin layer in each of the plurality of module regions; the upper battery pack shell is used for covering the plurality of battery cell stacks, and the heat conduction resin layer is in contact with the lower surface of each battery cell stack in the plurality of battery cell stacks.

Description

[0001] Divisional application

[0002] This application is a divisional application of a Chinese patent application filed on July 9, 2021, with application number 202180005601.X, and invention name “Battery pack and device including the battery pack”. Technical Field

[0003] CROSS-REFERENCE TO RELATED APPLICATIONS

[0004] 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.

[0005] The present disclosure relates to a battery pack and an apparatus including the same, and more particularly, to a battery pack having improved productivity and an apparatus including the same. Background Art

[0006] As the technology of mobile devices develops and the demand increases, the demand for secondary batteries as energy sources is also growing rapidly, and thus, many studies on batteries that can meet various demands are emerging.

[0007] 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.

[0008] Small mobile devices use one or more battery cells for each device, while medium or large devices such as vehicles require high power and large capacity. Therefore, medium or large battery modules having a plurality of battery cells electrically connected to each other are used.

[0009] The medium or large battery module is preferably manufactured to have the smallest possible size and weight. For this reason, prismatic batteries, pouch-shaped batteries, etc., which can be stacked with high integration and have a small weight relative to capacity, are generally used as battery cells of the medium or large battery module. Meanwhile, in order to protect the battery cell stack from external impact, heat or vibration, the battery module may include a module frame in which the front and rear surfaces are opened to accommodate the battery cell stack in the internal space.

[0010] 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 1A cross-sectional view taken along cutting line AA. Figure 4 It shows Figure 2 A view of the status of the battery module and radiator combination.

[0011] refer to Figures 1 to 3 In order to protect the battery cell stack 15 from external impact, heat or vibration, the battery module may include a module frame 10 whose front and rear surfaces are open 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 .

[0012] 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.

[0013] The thermally conductive resin layer 40 may 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 the thermally conductive resin is injected, the thermally conductive resin injected more than necessary may be discharged to the outside of the battery module through the inspection hole 30, thereby confirming the injection amount.

[0014] Figure 1 FIG. 4 shows a state where the battery module is flipped 180 degrees to inject thermally conductive resin, wherein Figure 3 As shown, the components inside the battery module may move downward due to gravity. The battery cell stack 15, which is an assembly 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 the 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.

[0015] refer to Figure 4 , Figure 2 The battery module may be combined with a heat sink 60 for cooling heat generated in the battery cells 14, thereby forming a battery pack. At this time, the heat sink 60 includes an inlet for refrigerant to flow in, an outlet for refrigerant to flow out, a lower plate 62 having a cooling flow path for connecting the inlet and the outlet, and an upper plate 61 for covering the lower plate 62. Here, a heat transfer member 50 may be further formed between the bottom 11 of the battery module and the heat sink 60.

[0016] The heat generated from the battery cell 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, since the heat transfer path becomes complicated, it is difficult to effectively transfer the heat generated from the battery cell 14. The module frame 10 itself may reduce the heat conduction characteristics, and a fine air layer (such as an air gap) that may be formed between each of the module frame 10, the heat transfer member 50, and the heat sink 60 may also become a factor that deteriorates the heat conduction characteristics.

[0017] In addition, return reference Figure 2 , the end plate 25 may be formed to cover the front surface (x-axis direction) and the rear surface (direction opposite to the x-axis) of the battery cell stack 15. The end plate 25 physically protects the battery cell stack 15 and other electrical components from external impacts, and the battery module may be fixed to the battery pack frame by the module mounting structure 28 located at the outermost portion of the end plate 25 in a direction parallel to the y-axis, thereby forming a battery pack. Such a module mounting structure 28 requires fastening members (such as bolts), which may reduce productivity. Summary of the invention

[0018]

Technical issues

[0019] 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.

[0020] However, the technical problems to be solved by the embodiments of the present disclosure are not limited to the problems described above, and various extensions can be made within the scope of the technical concept included in the present disclosure.

[0021]

Technical Solution

[0022] According to the present disclosure, a battery pack is provided, comprising: a lower battery pack shell having a plurality of separated module areas; a thermally conductive resin layer applied to the lower battery pack shell 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 shell for covering the plurality of battery cell stacks, wherein: the thermally conductive resin layer is in contact with a lower surface of each of the plurality of battery cell stacks.

[0023] According to one embodiment of the present disclosure, a battery pack is provided, comprising: a lower battery pack shell having a plurality of module areas; a thermally conductive resin layer applied to the lower battery pack shell 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 shell for covering the plurality of battery cell stacks.

[0024] The plurality of module areas are partitioned by a plurality of partition walls formed in a lower battery pack case, and the partition walls may be located between adjacent battery cell stacks among the plurality of battery cell stacks.

[0025] 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 partitioned 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.

[0026] The first thermally conductive resin layer and the second thermally conductive resin layer may be disposed apart from each other.

[0027] The battery pack may include a thermal paste layer applied to the plurality of battery cell stacks.

[0028] The thermal paste layer may include an adhesive component that bonds the upper battery pack case and the battery cell stack.

[0029] The 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 a height of a side surface of the first and second battery cell stacks.

[0030] 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.

[0031] The thermally conductive resin layer may include an adhesive component that bonds the lower battery pack case and the battery cell stack.

[0032] The battery pack may further include a heat dissipation layer between the lower pack case and the thermally conductive resin layer.

[0033] 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, and the electrode leads protrude from the front and rear surfaces of the battery cell stack, wherein the insulating cover can face the battery pack housing downward.

[0034] A terminal bus bar opening is formed in the insulation cover and through which the terminal bus bar is connected to the outside, and the terminal bus bar opening may be formed at the outermost portion of the insulation cover with respect to a stacking direction of a plurality of battery cells included in the battery cell stack.

[0035] According to one embodiment of the present disclosure, there is provided a device including the above-mentioned battery pack.

[0036]

Beneficial effects

[0037] 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 the heat transfer performance can be improved, and the battery cells are directly assembled into the battery pack instead of assembling the battery pack after assembling the modules, so that the production efficiency can be improved by simplifying the assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a perspective view showing a hole formed in the bottom of a frame in a conventional battery module;

[0039] Figure 2 It shows Figure 1 A three-dimensional diagram of a battery module in an upside-down state;

[0040] Figure 3 It is along Figure 1 A cross-sectional view taken along the cutting line AA;

[0041] Figure 4 It shows Figure 2 A view of the state of the battery module and the heat sink combination;

[0042] Figure 5 is a perspective view of a battery module according to one embodiment of the present disclosure;

[0043] Figure 6 yes Figure 5 An exploded perspective view of a battery module;

[0044] Figure 7 yes Figure 5 A three-dimensional view of a battery cell included in a battery module;

[0045] Figure 8 It shows Figure 5 A perspective view of an insulating cover included in a battery module;

[0046] Fig. 9 is an exploded perspective view of a battery pack according to another embodiment of the present disclosure; and

[0047] Fig.10shows the xz plane along Fig. 9 A portion of the cross-sectional view taken in the x-axis direction. DETAILED DESCRIPTION

[0048] 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 different ways and is not limited to the embodiments set forth herein.

[0049] 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.

[0050] 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, for the convenience of description, the thickness of some layers and regions is exaggeratedly shown.

[0051] In addition, 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 there can be intervening elements. Conversely, when an element is referred to as being "directly on" another element, it means that there are no other intervening elements. In addition, "on" or "above" refers to being arranged above or below a reference portion, and does not necessarily mean being arranged "on" or "over" a reference portion in an opposite direction of gravity.

[0052] Furthermore, throughout the specification, when a part is referred to as “comprising” a certain component, unless otherwise specified, it means that the part may further include other components, rather than excluding the other components.

[0053] 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.

[0054] Figure 5 is a perspective view of a battery module according to an embodiment of the present disclosure. Figure 6 yes Figure 5 An exploded perspective view of a battery module. Figure 7 yes Figure 5 A three-dimensional view of a battery cell included in a battery module.

[0055] 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.

[0056] First, the battery cell 110 is preferably a pouch-type battery cell and may 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 to opposite directions relative to the monomer 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 monomer 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 may be a positive electrode lead 111, and the other electrode lead may be a negative electrode lead 112. That is, the positive electrode lead 111 and the negative electrode lead 112 may protrude to face opposite directions relative to one battery cell 110.

[0057] Meanwhile, in a state where the electrode assembly (not shown) is accommodated in the cell case 114, the battery cell 110 may be manufactured by combining both ends 114a and 114b of the cell case 114 with one side portion 114c connecting the both ends 114a and 114b. In other words, the battery cell 110 according to the present embodiment has a total of three sealing portions having a structure sealed by a method such as hot melting, and the other side portion may be constituted by the connection portion 115. The cell case 114 may be constituted of a laminated sheet including a resin layer and a metal layer.

[0058] Such a battery cell 110 may be formed in plurality, 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, a 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.

[0059] At the same time, with reference Figures 1 to 4Unlike the conventional battery module described above, the battery module 100 according to the 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 that the weight of the battery module 100 can be significantly reduced by simply 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.

[0060] The side panel 600 is a plate-shaped member and may be disposed on both side surfaces of the battery cell stack 200 to supplement the rigidity of the battery module 100. Such a side panel 600 has elastic properties and may include a plastic material manufactured by injection molding, and in some cases, a leaf spring material may be applied.

[0061] The retaining band 700 is a member that wraps the battery cell stack 200 at both ends of the battery cell stack 200, and may have a function of fixing the plurality of battery cells 110 and the side panel 600 constituting the battery cell stack 200. After the battery cell stack 200 and the side panel 600 are fixed via the retaining band 700 in this manner, the insulating cover 400 may be arranged on the front and rear surfaces of the battery cell stack 200 corresponding to the direction in which the electrode leads 111 and 112 protrude. Such a retaining band 700 may be composed of a material having a predetermined elastic force, and specifically, a structure of a leaf spring may be applied.

[0062] Figure 8 It shows Figure 5 A three-dimensional view of an insulating cover included in a battery module.

[0063] refer to Figure 6 and Figure 8 , the battery module 100 according to the present embodiment may include an insulating cover 400, which covers the front and rear surfaces of the battery cell stack 200, and the electrode leads 111 and 112 protrude from the front and rear surfaces of the battery cell stack. Such an insulating cover 400 may include an electrically insulating material, and may include, for example, a plastic material, a polymer material, or a composite material. In addition, the insulating cover 400 may be formed in a basket shape to cover the front and rear surfaces of the battery cell stack 200.

[0064] 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 lead of the battery cell 110 located outside the battery cell stack 200 can be electrically connected to the terminal busbar 500. Unlike the conventional battery module in which the electrode leads are connected to each other via the busbar, the electrode leads 111 and 112 according to the present embodiment are directly combined with 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 installed 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.

[0065] On the other hand, the insulating cover 400 according to the present embodiment can guide the external connection between the LV connector 310 and the terminal bus bar 500, instead of the configuration of the end plate or the like made of a metal material. 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., LV (low voltage) connection) and can form an external connection of the terminal bus bar 500, i.e., a terminal bus bar opening 450 for guiding the HV connection. Here, the LV connection refers to a sensing connection for sensing and controlling the voltage of the battery cell.

[0066] The insulating cover 400 can ensure insulation performance by preventing contact with external conductive objects during LV connection and HV connection. 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 be used as a guide in which the bolts and nuts can be properly fastened.

[0067] The terminal bus bar opening 450 according to the present embodiment can be located at the outermost part 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 part 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 part of the insulating cover 400.

[0068] Fig. 9 is an exploded perspective view of a battery pack according to another embodiment of the present disclosure.

[0069] refer to Fig. 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 .

[0070] First, the battery module 100 includes the insulating cover as described above, and may alternatively form a module-less structure in which a module frame and an end plate are removed. A plurality of such battery modules 100 may be accommodated in a pack frame 1100 to form a battery pack 1000.

[0071] 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 the bottom 1111 of the lower battery pack housing 1110. The lower battery pack housing 1110 has a plurality of module regions, and the plurality of module regions may be separated by a plurality of partition walls 1350 formed in the lower battery pack housing 1110. The partition wall 1350 is formed between the battery modules 100 adjacent to each other in 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, the plurality of module regions include a first region and a second region separated from each other by the partition wall 1350, the first thermally conductive resin layer is formed to correspond to the first region, and the second thermally conductive resin layer may be formed to correspond to the second region. At this time, 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.

[0072] 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 play a role in fixing 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 may 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 may be in contact with the thermally conductive resin layer 1200. At this time, the battery cell stack 200 may be fixed to the lower battery pack housing 1110 by the thermally conductive resin layer 1200 having adhesive properties. When a separate member or layer is not added between the lower battery assembly housing 1110 and the thermally conductive resin layer 1200, the lower battery pack housing 1110 may be in contact with the thermally conductive resin layer 1200.

[0073] 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 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 may be directly transferred from the thermally conductive resin layer to the battery pack frame, thereby improving cooling efficiency. Although not shown, a heat sink structure may be formed on the battery pack frame.

[0074] Fig.10 shows the xz plane along Fig. 9 A portion of the cross-sectional view taken in the x-axis direction.

[0075] Fig.10 A battery pack according to another embodiment of the present disclosure is shown, and the battery pack 1000 according to the present 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 the present embodiment corresponding to the module-free structure may be further improved.

[0076] According to this embodiment, the 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.

[0077] The partition wall 1350 may be disposed between a first battery cell stack installed in a first region among the plurality of module regions and a second battery cell stack installed in a second region. In this case, the height of the partition wall 1350 may be higher than the height of the side surface of the first battery cell stack 200a and the height of the side surface of the second battery cell stack 200b. Due to this height difference, thermal paste may be applied to a desired portion on the upper portion of the battery cell stack 200 to form the thermal paste layer 1300, thereby enhancing adhesion.

[0078] In addition, the battery cell stack 200 may further include an adhesive member 120 located between the battery cells 110 adjacent to each other. The fixing force of the battery cell stack 200, which may be weakened as the module frame is eliminated, may be enhanced by the adhesive member 120. Although not shown, the battery pack according to the present embodiment may further include a heat dissipation layer located between the lower battery pack case 1110 and the thermally conductive resin layer 1200.

[0079] The battery module mentioned above and the battery pack including the battery module 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 the battery module, which also belongs to the scope of the present disclosure.

[0080] Although the invention has been shown and described with reference to the preferred embodiments, the scope of the disclosure is not limited thereto, and numerous other modifications and embodiments may be devised by those skilled in the art which fall within the spirit and scope of the principles of the invention as described in the appended claims.

[0081] [Description of Reference Numerals]

[0082] 100: Battery module

[0083] 200: Battery cell stack

[0084] 400: Insulation cover

[0085] 450: Terminal busbar opening

[0086] 700: Holding belt

[0087] 1100: Battery Pack Frame

[0088] 1110: Lower battery housing

[0089] 1120: Upper battery housing

Claims

1. A battery pack comprising: a lower battery pack housing having a plurality of separated 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 thermally conductive resin layer contacts a lower surface of each of the plurality of battery cell stacks.

2. The battery pack according to claim 1, wherein: The plurality of module areas are partitioned 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.

3. The battery pack according to claim 1, wherein: 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 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.

4. The battery pack according to claim 3, wherein: The first thermally conductive resin layer and the second thermally conductive resin layer are arranged apart from each other.

5. The battery pack according to claim 3, The battery pack also includes a thermal paste layer applied to the plurality of battery cell stacks.

6. The battery pack according to claim 5, wherein: The thermal paste layer includes an adhesive component that bonds the upper battery pack case and the battery cell stack.

7. The battery pack according to claim 6, 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 a height of a side surface of the first battery cell stack and a height of a side surface of the second battery cell stack.

8. 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 a bonding member between the battery cells adjacent to each other along the first direction.

9. 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.

10. The battery pack according to claim 9, The battery pack further includes a heat dissipation layer located between the lower battery pack case and the thermally conductive resin layer.

11. 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.

12. The battery pack according to claim 11, wherein: A terminal bus bar opening is formed in the insulation cover, and a terminal bus bar passes through the terminal bus bar opening to be connected to the outside, 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.

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

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