Battery pack

Abstract

A battery pack is disclosed. The battery pack according to one embodiment of the present invention may comprise: a base plate having first coupling pins protruding from the upper surface thereof; a first side structure positioned on the base plate and extending along the front-rear direction; a plurality of first battery cells mounted on the first side structure; and a first coupling member mounted on the first side structure and having first lower holes into which the first coupling pins are inserted.

Description

battery pack

[0001] The present invention relates to a battery pack.

[0002] This application is a priority claim application for Korean Patent Application No. 10-2024-0195854 filed on December 24, 2024, and all contents disclosed in the specification and drawings of said application are incorporated into this application by reference.

[0003] With the rapid increase in demand for portable electronic products such as laptops, video cameras, and mobile phones, and the full-scale commercialization of robots and electric vehicles, research on high-performance secondary batteries capable of repeated charging and discharging is actively underway.

[0004] Currently commercialized rechargeable batteries include nickel-cadmium, nickel-hydrogen, nickel-zinc, and lithium-ion batteries. Among these, lithium-ion batteries are gaining attention for their advantages, such as the ability to charge and discharge freely with almost no memory effect compared to nickel-based batteries, a very low self-discharge rate, and high energy density.

[0005] These lithium secondary batteries primarily use lithium-based oxides and carbon materials as the positive and negative active materials, respectively. The lithium secondary battery comprises an electrode assembly in which a positive plate and a negative plate, each coated with the positive and negative active materials, are arranged with a separator in between, and an outer casing, namely a battery case, that seals and houses the electrode assembly together with an electrolyte.

[0006] Generally, lithium secondary batteries can be classified according to the shape of the casing into can-type secondary batteries, in which the electrode assembly is embedded in a metal can, and pouch-type secondary batteries, in which the electrode assembly is embedded in a pouch of aluminum laminate sheet.

[0007] Recently, secondary batteries are widely used for driving or energy storage not only in small devices such as portable electronic devices but also in medium-to-large devices such as electric vehicles and Energy Storage Systems (ESS). These secondary batteries can form a single battery module by housing multiple batteries together inside a module case while electrically connected. Furthermore, multiple such battery modules can be connected to form a single battery pack.

[0008] For medium to large battery packs, such as those in electric vehicles, a large number of battery cells and modules are required to increase output and / or capacity. There is a growing need for structures that ensure structural rigidity while increasing the energy density of the battery pack.

[0009] The present invention aims to solve the aforementioned problems and other problems.

[0010] Another objective of the present invention may be to improve the energy density of the battery pack.

[0011] Another objective of the present invention may be to provide a battery pack with improved assemblability.

[0012] Another objective of the present invention may be to provide a battery pack with a simplified structure.

[0013] A battery pack according to one embodiment of the present invention for achieving the above-mentioned purpose may include: a base plate having a first coupling pin protruding from an upper surface; a first side structure located above the base plate and extending along the front-rear direction; a plurality of first battery cells mounted on the first side structure; and a first coupling member mounted on the first side structure and having a first lower hole into which the first coupling pin is inserted.

[0014] Additionally, the first side structure may include a first body that extends long along the front-rear direction and covers the sides of the plurality of first battery cells and the first coupling member.

[0015] Additionally, the first body may include a curved portion formed along the side of the plurality of first battery cells and the side of the first coupling member.

[0016] Additionally, the first side structure further comprises: a first bottom rib protruding from the first body; and a first top rib protruding from the first body and located above the first bottom rib, and the plurality of first battery cells and the first coupling member may be mounted between the first bottom rib and the first top rib.

[0017] Additionally, the battery pack may include a pack cover positioned on the first side structure; and a fastening member for fastening the pack cover to the first coupling member.

[0018] In addition, the above fastening member can penetrate the pack cover and be inserted into the first coupling member.

[0019] Additionally, the first coupling member may include: a first upper hole into which the fastening member is inserted; and a screw thread formed on the inner surface of the first upper hole.

[0020] Additionally, the battery pack may further include: a second side structure located above the first side structure and extending along the front-rear direction; a plurality of second battery cells mounted on the second side structure; and a second coupling member mounted on the second side structure, located above the first coupling member, and coupled with the first coupling member.

[0021] Additionally, the battery pack may further include a second coupling pin, the lower end of which is inserted into the first coupling member and the upper end of which is inserted into the second coupling member.

[0022] Additionally, the first coupling member may further include a third coupling pin protruding upward, and the second coupling member may have a second lower hole into which the third coupling pin is inserted.

[0023] In addition, the height of the first coupling member in the vertical direction may be configured to be higher than the height of the plurality of first battery cells in the vertical direction.

[0024] In addition, the first connecting member may include a plastic material.

[0025] An automobile according to one aspect of the present invention includes a battery pack of the present invention.

[0026] According to at least one of the embodiments of the present invention, the energy density of the battery pack can be improved.

[0027] According to at least one of the embodiments of the present invention, the structural rigidity of the battery pack can be improved.

[0028] According to at least one of the embodiments of the present invention, the assemblability of the battery pack can be improved.

[0029] According to at least one of the embodiments of the present invention, the structure of the battery pack can be simplified.

[0030] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings.

[0031] FIG. 1 is a perspective view showing a battery pack according to one embodiment of the present invention.

[0032] Figure 2 is a diagram showing a separated configuration of a battery pack of Figure 1.

[0033] Figure 3 is a diagram showing a partial configuration of the first battery assembly of Figure 2 separated.

[0034] Figure 4 is an enlarged view of part B of Figure 3.

[0035] Figure 5 is an enlarged view of section C of Figure 3.

[0036] FIG. 6 is a drawing showing the first battery cell and the first coupling member of FIG. 3.

[0037] Figure 7 is a drawing showing the cross-sectional configuration of Figure 6.

[0038] FIG. 8 is an enlarged view of the first battery assembly of FIG. 2.

[0039] Figure 9 is a drawing showing the cross-sectional configuration along the cutting line D-D' of Figure 8.

[0040] Figure 10 is a drawing showing the cross-sectional configuration along the cutting line E-E' of Figure 8.

[0041] FIG. 11 is a drawing showing the cross-sectional configuration along the cutting line A-A' of FIG. 1.

[0042] FIG. 12 is a drawing showing a battery pack according to another embodiment of the present invention.

[0043] Figure 13 is a diagram showing a partial configuration of the battery pack of Figure 12 separated.

[0044] FIG. 14 is a diagram showing the first battery assembly and the second battery assembly of FIG. 12 separated.

[0045] FIG. 15 is a drawing showing the cross-sectional configuration along the cutting line F-F' of FIG. 13.

[0046] Figure 16 is a drawing showing a modified embodiment of Figure 15.

[0047] FIG. 17 is a drawing showing a vehicle according to one aspect of the present invention.

[0048] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0049] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely examples of the present invention and do not represent all aspects of the technical concept of the present invention; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application.

[0050] FIG. 1 is a perspective view showing a battery pack (1000) according to one embodiment of the present invention. FIG. 2 is a diagram showing a partial configuration of the battery pack (1000) of FIG. 1 separated.

[0051] Referring to FIGS. 1 and 2, a battery pack (1000) according to one embodiment of the present invention may include a case (100). The case (100) may have a rectangular shape. The case (100) may provide a space inside. The case (100) may include a base plate (110). The base plate (110) may have a flat shape. The base plate (110) may have a square shape. The base plate (110) may form the exterior of the battery pack (1000).

[0052] The first coupling pin (111) may be formed on the upper surface of the base plate (110). The first coupling pin (111) may protrude upward or in the +Z axis direction. The first coupling pin (111) may be provided in multiple numbers. The first coupling pin (111) may be formed on the upper surface of the base plate (110). The first coupling pin (111) and the first coupling member (230) may be provided to correspond one-to-one. The first coupling pin (111) may be formed integrally with the base plate (110).

[0053] The case (100) may include a side wall (120). The side wall (120) may be fastened, coupled, fixed, attached, or installed on the upper surface of the base plate (110). The side wall (120) may have a square plate shape. The side wall (120) may extend along one side of the base plate (110). The side wall (120) may be provided in multiple numbers. Multiple side walls (120) may be arranged along the perimeter of the base plate (110). For example, four side walls (120) may be provided. The base plate (110) and the side wall (120) may form an internal space. The side wall (120) may form the exterior of the battery pack (1000).

[0054] The case (100) may include a pack cover (150). The pack cover (150) may have a square shape. The pack cover (150) may have a plate shape. The pack cover (150) may be fastened, coupled, fixed, attached, or installed to the side wall (120).

[0055] The first battery assembly (200) can be accommodated inside the case (100). The first battery assembly (200) can be fastened, coupled, fixed, attached, or installed on the upper surface of the base plate (110).

[0056] FIG. 3 is a drawing showing a partial configuration of the first battery assembly (200) of FIG. 2 separated. FIG. 4 is an enlarged view of section B of FIG. 3. FIG. 5 is an enlarged view of section C of FIG. 3. FIG. 6 is a drawing showing the first battery cell (220) and the first coupling member (230) of FIG. 3. FIG. 7 is a drawing showing the cross-sectional configuration of FIG. 6.

[0057] Referring to FIGS. 3 through 7, the first battery assembly (200) may include a first side structure (210). The first side structure (210) may be provided in plurality. The first side structure (210) may include a first outer side structure (210a) and a first inner side structure (210b). The first side structure (210) may extend along the front-rear direction or the X-axis direction. The plurality of first side structures (210) may be arranged along the left-right direction or the Y-axis direction. The first outer side structure (210a) may be located at the outermost of the plurality of first side structures (210). The first outer side structure (210a) may be provided as a pair. The first inner side structure (210b) may be located between a pair of first outer side structures (210a). The first inner side structure (210b) may be provided in multiple numbers.

[0058] The first battery assembly (200) may include a plurality of first battery cells (220). The plurality of first battery cells (220) may be mounted, fastened, coupled, fixed, attached, or installed on the first side structure (210). At this time, the first battery cell (220) may refer to a secondary battery. The first battery cell (220) may be a secondary battery having a cylindrical shape. However, the shape of the first battery cell (220) is not limited and may have various shapes, such as a rectangular shape or a pouch shape.

[0059] The first battery cell (220) may include a cell body (221). The cell body (221) may have a cylindrical shape. The first battery cell (220) may include a first electrode (222) and a second electrode (223) protruding from the upper surface of the cell body (221).

[0060] A plurality of first battery cells (220) may be arranged along the front-rear direction or the X-axis direction. A plurality of first battery cells (220) may be arranged along the left-right direction or the Y-axis direction. A plurality of first battery cells (220) may form an array.

[0061] The first side structure (210) may include a first body (211) extending along the front-rear direction or the X-axis direction. The first body (211) may cover the side of the first battery cell (220). The first side structure (210) may include a first bottom rib (213) protruding from the lower part of the first body (211). The first bottom rib (213) may protrude along the left-right direction or the Y-axis direction. The first side structure (210) may include a first top rib (214) protruding from the upper part of the first body (211). The first top rib (214) may protrude along the left-right direction or the Y-axis direction. The first top rib (214) and the first bottom rib (213) may face each other. A plurality of first battery cells (220) can be mounted, fastened, combined, fixed, attached, or installed between the first top rib (214) and the first bottom rib (213).

[0062] The first side structure (210) may include a curved portion (211a). The curved portion (211a) may be formed along the side of the first battery cell (220). The curved portion (211a) may be curved along the side of the first battery cell (220). The curved portion (211a) may be provided in multiple numbers. The curved portion (211a) may be provided to correspond one-to-one with the first battery cell (220).

[0063] The first coupling member (230) may have a shape similar to the first battery cell (220). The first coupling member (230) may replace the first battery cell (220). The first coupling member (230) may be mounted, fastened, coupled, fixed, attached, or installed on the first side structure (210). The first coupling member (230) may be mounted, fastened, coupled, fixed, attached, or installed between the first top rib (214) and the first bottom rib (213). The first coupling member (230) may be provided in multiple numbers.

[0064] The first coupling member (230) may include a first main body (231). The first main body (231) may have a cylindrical shape. The first main body (231) may have a shape similar to the cell body (221) of the first battery cell (220). The height (H) of the first main body (231) and the height (H) of the cell body (221) of the first battery cell (220) may be configured to be the same. The first coupling member (230) may include a first upper protrusion (234) protruding from the upper surface of the first main body (231). The first coupling member (230) may include a first upper hole (235). The first upper hole (235) may be formed in the first upper protrusion (234) and the first main body (231). The first upper hole (235) may have a first screw thread (235a) inside. The first coupling member (230) may include a first lower protrusion (232) protruding from the lower surface of the first main body (231). The first lower hole (233) may be formed in the first lower protrusion (232) and the first main body (231).

[0065] The first coupling member (230) may be installed on the first outer side structure (210a). Referring to the drawing, four first coupling members (230) may be installed on each of the first outer side structures (210a). A plurality of first battery cells (220) may be arranged between the four first coupling members (230). The first body (211) may cover the side of the first coupling member (230).

[0066] The curved portion (211a) may be formed along the side of the first coupling member (230) and the first battery cell (220). The curved portion (211a) may be curved along the side of the first coupling member (230) and the first battery cell (220). The curved portion (211a) may be provided in multiple numbers. The curved portion (211a) may be provided to correspond one-to-one with the first coupling member (230) and the first battery cell (220).

[0067] The first cooling assembly (240) may be provided in multiple numbers. The first cooling assembly (240) may extend along the front-rear direction or the X-axis direction. Multiple first cooling assemblies (240) may be arranged along the left-right direction or the Y-axis direction. The first cooling assembly (240) may be in contact with the side of the first battery cell (220) or the first coupling member (230). The first cooling assembly (240) may have a flow path (240a) inside. Cooling liquid may flow along the flow path (240a) of the first cooling assembly (240). Multiple first cooling assemblies (240) may be connected to each other.

[0068] The first inner side structure (210b) and the first cooling assembly (240) can be arranged alternately.

[0069] The first rear frame (250) can cover the rear end of the first side structure (210). The first rear frame (250) can be mounted, fastened, coupled, fixed, attached, or installed at the rear end of the first side structure (210). The first rear frame (250) can cover the rear end of the first cooling assembly (240). The first rear frame (250) can be mounted, fastened, coupled, fixed, attached, or installed at the rear end of the first cooling assembly (240).

[0070] FIG. 8 is an enlarged view of the first battery assembly (200) of FIG. 2. FIG. 9 is a cross-sectional view along the cutting line D-D' of FIG. 8. FIG. 10 is a cross-sectional view along the cutting line E-E' of FIG. 8. FIG. 11 is a cross-sectional view along the cutting line A-A' of FIG. 1.

[0071] Referring to FIGS. 8 through 11, the first coupling pin (111) can be inserted into the first lower hole (233). The first coupling member (230) can be fixed by the first coupling pin (111). The first coupling pin (111) and the first coupling member (230) can be provided to correspond one-to-one. The first lower protrusion (232) can be in contact with the upper surface of the base plate (110). The first coupling member (230) can align the position of the first battery assembly (200). The first coupling member (230) can mount, fasten, connect, fix, attach, or install the first battery assembly (200) on the base plate (110).

[0072] The first coupling member (230) may be provided in place of the first battery cell (220). The number of the first coupling members (230) may be configured in various ways as needed. For example, as the number of the first coupling members (230) increases, the coupling strength between the first battery assembly (200) and the base plate (110) may be increased. Since the first coupling member (230) is provided in place of the first battery cell (220), the first battery assembly (200) may not have a separate coupling part for installation on the base plate (110). As a result, the structure of the first battery assembly (200) may be simplified.

[0073] The first bonding member (230) may include a plastic material. For example, the first bonding member (230) may include MPPO (Modified Polyphenylene Oxide) resin. By including a plastic material for the first bonding member (230), the weight of the first battery assembly (200) may be reduced. As a result, the energy density of the battery pack (1000) may be improved.

[0074] The fastening member (F) can fasten, connect, fix, or install the pack cover (150) to the first connecting member (230). The fastening member (F) can penetrate the pack cover (150). The fastening member (F) can be inserted into the first upper hole (235). The fastening member (F) can be screw-coupled with the first thread (235a) of the first upper hole (235). The fastening member (F) may be provided in multiple numbers. The fastening member (F) may be provided to correspond one-to-one with the first connecting member (230).

[0075] The number of the first coupling members (230) can be configured in various ways as needed. For example, as the number of the first coupling members (230) increases, the coupling strength between the first battery assembly (200) and the pack cover (150) can be increased. Since the first coupling members (230) are provided in place of the first battery cell (220), the first battery assembly (200) may not have a separate coupling part for installation on the pack cover (150). As a result, the structure of the first battery assembly (200) can be simplified.

[0076] FIG. 12 is a drawing showing a battery pack (1000) according to another embodiment of the present invention. FIG. 13 is a drawing showing a part of the battery pack (1000) of FIG. 12 separated. FIG. 14 is a drawing showing the first battery assembly (200) and the second battery assembly (300) of FIG. 12 separated. FIG. 15 is a drawing showing a cross-sectional configuration along the cutting line F-F' of FIG. 13.

[0077] Referring to FIGS. 12 through 15, the battery pack (1000) may include a first battery assembly (200) and a second battery assembly (300). The second battery assembly (300) may be positioned above the first battery assembly (200). The first battery assembly (200) and the second battery assembly (300) may have very similar structures and configurations. Alternatively, the first battery assembly (200) and the second battery assembly (300) may have substantially the same structure and configuration. The first side structure (210) and the second side structure (310) may have substantially the same configuration. The first outer side structure (210a) and the second outer side structure (310a) may have substantially the same configuration. The first inner side structure (210b) and the second inner side structure (310b) may have substantially the same configuration. The first body (211) and the second body (311) may have substantially the same configuration. The first bottom rib (213) and the second bottom rib (313) may have substantially the same configuration. The first top rib (214) and the second top rib (314) may have substantially the same configuration. The first cooling assembly (240) and the second cooling assembly (340) may have substantially the same configuration. The first battery cell (220) and the second battery cell (320) may have substantially the same configuration. The first rear frame (250) and the second rear frame (350) may have substantially the same configuration. The first coupling member (230) and the second coupling member (330) may have substantially the same configuration. The first main body (231) and the second main body (331) may have substantially the same configuration. The first lower protrusion (232) and the second lower protrusion (332) may have substantially the same configuration. The first lower hole (233) and the second lower hole (333) may have substantially the same configuration. The first upper protrusion (234) and the second upper protrusion (334) may have substantially the same configuration.The first upper hole (235) and the second upper hole (335) may have substantially the same configuration. The first screw thread (235a) and the second screw thread (335a) may have substantially the same configuration.

[0078] The first connecting member (230) and the second connecting member (330) may be provided to correspond one-to-one. Additionally, the first connecting member (230) and the second connecting member (330) may be arranged to be aligned along the vertical direction or the Z-axis direction. The first connecting member (230) and the second connecting member (330) may be connected to correspond one-to-one.

[0079] The second coupling pin (400) may be positioned between the first battery assembly (200) and the second battery assembly (300). The second coupling pin (400) may be provided in multiple numbers. The second coupling pin (400) may be provided to correspond one-to-one with the first coupling member (230). The second coupling pin (400) may be provided to correspond one-to-one with the second coupling member (330). The second coupling pin (400) may include a spacer (410). The second coupling pin (400) may include an upper pin (411) protruding from the upper surface of the spacer (410). The second coupling pin (400) may include a lower pin (412) protruding from the lower surface of the spacer (410). The second coupling pin (400) may be formed integrally.

[0080] The upper portion of the second coupling pin (400) can be inserted into the second coupling member (330). The lower portion of the second coupling pin (400) can be inserted into the first coupling member (230). The upper pin (411) of the second coupling pin (400) can be inserted into the second lower hole (333) of the second coupling member (330). The lower pin (412) of the second coupling pin (400) can be inserted into the first upper hole (235) of the first coupling member (230). The spacer (410) can form a gap between the first battery assembly (200) and the second battery assembly (300). A gap between the first battery assembly (200) and the second battery assembly (300) can be formed by the thickness of the spacer (410).

[0081] The first battery assembly (200) and the second battery assembly (300) can be easily aligned by the first connecting member (230), the second connecting member (330), and the second connecting pin (400). Additionally, the stacking of the first battery assembly (200) and the second battery assembly (300) can be easily facilitated. Furthermore, the first battery assembly (200) and the second battery assembly (300) can be easily installed.

[0082] The first coupling pin (111) can be inserted into the first lower hole (233) of the first coupling member (230). The fastening member (F) can be inserted into the second upper hole (335) of the second coupling member (330). The fastening member (F) can penetrate the pack cover (150) and be screw-coupled with the second thread (335a) of the second upper hole (335).

[0083] Figure 16 is a drawing showing a modified embodiment of Figure 15.

[0084] Referring to FIGS. 15 and 16, the first coupling member (230) of FIG. 16 may have a structure in which the second coupling pin (400) of the embodiment of FIG. 15 and the first coupling member (230) are integrally formed. The first coupling member (230) and the second coupling member (330) may have different structures. The first coupling member (230) may include a third coupling pin (236) that protrudes upward. The third coupling pin (236) may be formed on the first upper protrusion (234). The third coupling pin (236) may be inserted into the second lower hole (333) of the second coupling member (330).

[0085] The first upper protrusion (234) may protrude higher than the first upper protrusion (234) of FIG. 15. The first upper protrusion (234) may form a gap between the first battery assembly (200) and the second battery assembly (300). A gap may be formed between the first battery assembly (200) and the second battery assembly (300) equal to the thickness of the first upper protrusion (234).

[0086] The height of the first connecting member (230) may be configured to be higher than the height of the second connecting member (330). The height of the first connecting member (230) in the vertical direction may be configured to be higher than the height of the second connecting member (330) in the vertical direction.

[0087] The battery pack (1000) according to the present invention may further include various other components in addition to the first battery assembly (200) or the second battery assembly (300), such as a BMS, a busbar, a relay, a current sensor, etc., and various other components of a battery pack known at the time of filing the present invention.

[0088] FIG. 17 is a drawing showing a vehicle (V) according to one aspect of the present invention.

[0089] Referring to FIG. 17, the automobile (V) according to the present invention may include the battery pack (1000) of the present invention.

[0090] The battery pack (1000) according to the present invention may be applied to a vehicle such as an electric vehicle or a hybrid vehicle. The vehicle (V) according to the present invention may further include various other components included in the vehicle in addition to the battery pack (1000). For example, the vehicle (V) according to the present invention may further include a vehicle body, a motor, an electronic control unit (ECU), and other control devices.

[0091] As described above, although the present invention has been explained by limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical spirit of the present invention and the equivalent scope of the claims described below by those skilled in the art to which the present invention belongs.

Claims

1. A base plate having a first coupling pin protruding from the upper surface; A first side structure located on the base plate and extending along the front-rear direction; A plurality of first battery cells mounted on the first side structure; and, A battery pack comprising a first coupling member mounted on the first side structure and having a first lower hole into which the first coupling pin is inserted.

2. In Paragraph 1, The above-mentioned first side structure is, A battery pack comprising a first body that extends long along the front-rear direction and covers the sides of the plurality of first battery cells and the first coupling member.

3. In Paragraph 2, The above-mentioned first body is, A battery pack comprising a curved portion formed along the side of the plurality of first battery cells and the side of the first coupling member.

4. In Paragraph 2, The above-mentioned first side structure is: A first bottom rib protruding from the first body; and, It further includes a first top rib protruding from the first body and located above the first bottom rib, and The plurality of first battery cells and the first coupling member are, A battery pack mounted between the first bottom rib and the first top rib.

5. In Paragraph 1, A pack cover located on top of the first side structure; and, A battery pack comprising a fastening member for fastening the above pack cover to the above first coupling member.

6. In Paragraph 5, The above-mentioned fastening member is, A battery pack that penetrates the pack cover and is inserted into the first coupling member.

7. In Paragraph 6, The first coupling member above is: A first upper hole into which the above-mentioned fastening member is inserted; and, A battery pack including screw threads formed on the inner surface of a first upper hole.

8. In Paragraph 1, A second side structure located above the first side structure and extending along the front-rear direction; A plurality of second battery cells mounted on the second side structure; and, A battery pack further comprising a second coupling member mounted on the second side structure, positioned above the first coupling member, and coupled to the first coupling member.

9. In Paragraph 8, A battery pack further comprising a second coupling pin, the lower part of which is inserted into the first coupling member and the upper part of which is inserted into the second coupling member.

10. In Paragraph 8, The first coupling member above is, It further includes a third connecting pin protruding upward, and The above second connecting member is, A battery pack having a second lower hole into which the third coupling pin is inserted.

11. In Paragraph 8, The height of the first connecting member in the vertical direction is, A battery pack configured to be higher than the vertical height of the plurality of first battery cells.

12. In Paragraph 1, The first coupling member above is, A battery pack containing plastic material.

13. An automobile comprising a battery pack according to any one of claims 1 to 12.

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