Battery module, battery pack including the same, and motor vehicle

Abstract

A battery module, a battery pack including the same, and a vehicle are disclosed. The battery module according to an embodiment of the present invention includes a battery cell stack in which a plurality of battery cells are stacked, a case in which the battery cell stack is housed and in which a first exhaust port through which gas is exhausted is formed, an exhaust path member that is attached to the case to provide an exhaust path for the gas and is provided to exhaust the gas but prevent flames from escaping, and a cover that is coupled to the case to cover the exhaust path member and is provided with a second exhaust port through which gas that has moved through the exhaust path member is exhausted, and one cover included in the case is provided to be adjustable in length.

Description

Technical Field

[0001] This application claims priority based on Korean Patent Application No. 10-2022-0015832 filed on February 7, 2022, and all of the content disclosed in the specification and drawings of the application is incorporated herein.

[0002] The present invention relates to a battery module, a battery pack including the same, and a vehicle, and more particularly, to a battery module in which gas is discharged but a flame is not discharged when a battery cell ignites, a battery pack including the same, and a vehicle.

Background Art

[0003] The recent development of technologies for mobile devices and the increasing demand are remarkable, and accordingly, the need for secondary batteries as an energy source has been rapidly growing. Conventionally, nickel-cadmium batteries or hydrogen ion batteries have been used as secondary batteries, but recently, lithium secondary batteries that can be freely charged and discharged because they hardly exhibit a memory effect compared to nickel-based batteries, have a very low self-discharge rate, and have a high energy density are widely used.

[0004] This type of lithium secondary battery mainly uses a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively. The lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate, each coated with such a positive electrode active material and a negative electrode active material, are arranged with a separator interposed therebetween, and an exterior material that encloses the electrode assembly together with an electrolytic solution, for example, a battery case.

[0005] A lithium secondary battery consists of a positive electrode, a negative electrode, a separator and an electrolyte sandwiched between them. Depending on the materials used as the positive electrode active material and the negative electrode active material, it can be classified into a lithium ion battery (LIB), a polymer lithium ion battery (PLIB), etc. Usually, the electrodes of these lithium secondary batteries can be formed by applying the positive or negative electrode active material to a current collector such as an aluminum or copper sheet, mesh, film, foil, etc. and then drying it.

[0006] At present, lithium secondary batteries are in the spotlight due to advantages such as a high operating voltage and a much higher energy density. However, because they use an organic electrolyte solution, if a lithium secondary battery is overcharged, it will cause overcurrent and overheating, and in severe cases, there is a problem that it may cause an explosion or a fire due to ignition.

[0007] Among various types of secondary batteries, there are cases that can protect the battery cells. It includes a battery module in which a plurality of battery cells are stacked and drawn into the case, and a battery pack that includes a plurality of battery modules.

[0008] Here, if a flame occurs in at least one of the battery cells inside the case of the battery module, if the flame flows out of the case of the battery module, there is a risk not only of spreading to other battery modules, but also of the user being in a dangerous situation. For example, when the battery module or battery pack is installed in an electric vehicle and a flame occurs in the battery cell and the flame flows out to the outside, there is a problem that the driver driving the electric vehicle may get burned or be in a dangerous situation.

Summary of the Invention

Problems to be Solved by the Invention

[0009] Therefore, the technical problem to be solved by the present invention is to provide a battery module, a battery pack including the same, and an automobile that can prevent the outflow of a flame while allowing gas to be discharged outside the case when a flame occurs in a battery cell.

Means for Solving the Problems

[0010] According to one aspect of the present invention, there is provided a battery module including: a battery cell stack in which a plurality of battery cells are stacked; a case that houses the battery cell stack and has a first discharge port through which gas is discharged; an exhaust path member that is attached to the case to provide a discharge path for the gas, and is provided so as to prevent the outflow of a flame while allowing the gas to be discharged; and a lid that is coupled to the case so as to cover the exhaust path member and has a second discharge port through which the gas that has moved through the exhaust path member is discharged, wherein one cover included in the case is provided so that its length can be adjusted.

[0011] Further, the first discharge port formed in the case and the second discharge port formed in the lid are formed in opposite directions, and the gas can flow out to the second discharge port while being guided from the first discharge port by the exhaust path member.

[0012] Furthermore, the case includes a lower cover that houses the battery cell stack, and an upper cover that is coupled to the lower cover, to which the exhaust path member is attached, in which the first discharge port is formed, and whose length is adjustable, and the lid is coupled to the upper cover, and the exhaust path member can be positioned between the lid and the upper cover.

[0013] Furthermore, the upper cover may include a first plate in which a concavo-convex first rail is formed, and a second plate in which a concavo-convex second rail is formed so as to correspond to the first rail of the first plate and is coupled to the first plate.

[0014] Furthermore, the first plate and the second plate can be adjusted in length while moving relative to each other along the first rail and the second rail.

[0015] Furthermore, a fitting groove into which the exhaust path member is fitted may be formed at an end of the upper cover.

[0016] Furthermore, any one of the plurality of exhaust path members and another adjacent exhaust path member may be arranged in a staggered manner.

[0017] Furthermore, the exhaust path member may include an inner partition with a coupling groove formed therein, at least one height adjustment partition coupled to the coupling groove of the inner partition, and an outer partition covering the inner partition.

[0018] Furthermore, the coupling groove is formed in at least one of the upper side and the lower side of the inner partition, a protruding portion corresponding to the shape of the coupling groove is formed in the height adjustment partition, and the protruding portion of the height adjustment partition can be coupled to the coupling groove of the inner partition.

[0019] Furthermore, the battery module further includes a fixing pin for fixing the height adjustment partition. A through hole is formed in a side surface of the inner partition, a plurality of fixing grooves are formed in the height adjustment partition, and the fixing pin can pass through the through hole of the inner partition and be inserted into any one of the plurality of fixing grooves of the height adjustment partition to fix the height adjustment partition.

[0020] Furthermore, the outer partition can be coupled to the inner partition in a sliding manner.

[0021] In addition to these, a guide groove is formed at a peripheral edge of the inner partition, a protruding portion is formed at a peripheral edge of the outer partition, and the protruding portion of the outer partition can move along the guide groove of the inner partition.

[0022] On the one hand, according to another aspect of the present invention, a battery pack including the aforementioned battery module can be provided, and an automobile including the battery module can also be provided.

Advantages of the Invention

[0023] According to an embodiment of the present invention, when a flame occurs in a battery cell, although the gas is discharged to the outside of the case by the exhaust path member mounted on the case, there is an effect that the outflow of the flame can be prevented.

Brief Description of the Drawings

[0024]

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Embodiments for Carrying Out the Invention

[0025] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms and words used in this specification and the claims are not to be construed as limited to ordinary or dictionary meanings, and the inventor himself interprets them in accordance with the meaning and concept corresponding to the technical idea of the present invention in accordance with the principle that he can appropriately define the concept of the terms in order to explain the invention in the best way. Therefore, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, so there may be various equivalents and modifications that can replace them at the time of this application.

[0026] In the drawings, the sizes of the respective components or specific parts forming the components are shown with some exaggeration, omitted, or shown schematically for ease of explanation and clarity. Therefore, the sizes of the respective components do not reflect the actual sizes. When it is recognized that a detailed description of related known functions or configurations may unnecessarily obscure the gist of the present invention, the detailed description thereof is omitted.

[0027] As used herein, the terms "coupled" or "connected" include not only cases where one member is directly coupled or directly connected to another member, but also cases where one member is indirectly coupled or indirectly connected to another member via a joining member.

[0028] FIG. 1 is a perspective view of an assembled state of a battery module according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a battery module according to an embodiment of the present invention, FIG. 3 is a perspective view of a state in which a lid is removed from a battery module according to an embodiment of the present invention, FIGS. 4 to 6 are views showing a state in which a case removed from a battery module according to an embodiment of the present invention is coupled and the length is adjusted, FIGS. 7 to 11 are views showing a process of assembling an exhaust path member in a battery module according to an embodiment of the present invention, FIG. 12 is a view showing a state in which the height of an exhaust path member is adjusted in a battery module according to an embodiment of the present invention, FIG. 13 is a view showing a state in which the length of an exhaust path member is adjusted in a battery module according to an embodiment of the present invention, FIG. 14 is a view showing another embodiment of FIG. 3, which is an embodiment when the length of the case is increased, FIG. 15 is a view showing still another embodiment of FIG. 3, which is an embodiment when the length of the case is decreased, and FIG. 16 is a view showing still another embodiment of FIG. 3, which is an embodiment when the number of exhaust path members is decreased.

[0029] Referring to the figure, a battery module 10 according to an embodiment of the present invention includes a battery cell stack 100, a case 200, an exhaust path member 300, and a lid 400.

[0030] The battery cell stack 100 is formed by stacking a plurality of battery cells provided with electrode leads. The battery cells can have various structures, and the plurality of battery cells can be stacked in various ways. The electrode leads provided on the battery cells are a kind of terminals that are exposed to the outside and connected to external devices, and a conductive material can be used.

[0031] The electrode leads can include a positive electrode lead and a negative electrode lead. The positive electrode lead and the negative electrode lead may be arranged in opposite directions with respect to the longitudinal direction of the battery cell, or the positive electrode lead and the negative electrode lead may be located in the same direction with respect to the longitudinal direction of the battery cell.

[0032] The positive electrode lead and the negative electrode lead can be provided from various materials. For example, the positive electrode lead can be made of an aluminum material, and the negative electrode lead can be made of a copper material.

[0033] The electrode leads can be electrically coupled to a bus bar (not shown). The battery cell can have a structure in which a plurality of unit cells arranged in the order of positive electrode plate - separator - negative electrode plate or a plurality of bi-cells arranged in the order of positive electrode plate - separator - negative electrode plate - separator - positive electrode plate - separator - negative electrode plate are stacked according to the electron capacity.

[0034] The battery cell stack 100 can be provided with a plurality of cartridges (not shown) for accommodating the respective battery cells. Each cartridge (not shown) can be manufactured by injection molding of plastic, and a plurality of cartridges (not shown) formed with accommodating portions capable of accommodating the battery cells can be stacked.

[0035] In a cartridge assembly in which a plurality of cartridges (not shown) are stacked, connector elements or terminal elements may be provided. The connector elements may include various forms of electrical connection components or connection members for connection to, for example, a battery management system (BMS) (not shown) capable of providing data regarding the voltage or temperature of battery cells.

[0036] And the terminal element is a main terminal connected to the battery cell, including a positive terminal and a negative terminal, and the terminal element may be provided with a terminal bolt for electrical connection to the outside. On the other hand, the battery cell may have various shapes.

[0037] Referring to FIGS. 1 and 2, a battery cell stack 100 is housed in a case 200, and a first discharge port 225 through which gas is discharged is formed. For example, the case 200 may be provided so as to surround the battery cell stack 100. The case 200 surrounds the entire battery cell stack 100, thereby protecting the battery cell stack 100 from external vibration and impact.

[0038] And one cover included in the case 200 is provided so that its length can be adjusted in various ways. Details of the adjustment of the length of the case 200 will be described later.

[0039] The case 200 may be formed in a shape corresponding to the shape of the battery cell stack 100. For example, when the battery cell stack 100 is provided in a rectangular parallelepiped shape, the case 200 may also be provided in a rectangular parallelepiped shape corresponding thereto.

[0040] The case 200 can be manufactured, for example, by bending a metal plate, and may be manufactured integrally or may be of a removable type. Here, the case 200 can be made of a steel material resistant to fire, but the material of the case 200 is not limited to steel, covering a wide variety of metals.

[0041] And the case 200 may include a mica plate formed of mica having heat insulation and heat resistance so as to prevent the outflow of flames. Here, the shape of the mica plate may cover not only the shape of a flat mica sheet but also a shape in which a flat surface and a curved surface are mixed.

[0042] Referring to FIGS. 1 and 2, the case 200 may include a lower cover 210 and an upper cover 220. The battery cell laminate 100 is accommodated in the lower cover 210.

[0043] The upper cover 220 is coupled to the lower cover 210. Referring to FIG. 3, an exhaust path member 300 is attached to the upper cover 220. And a first discharge port 225 is formed in the upper cover 220. Here, the exhaust path member 300 may be coupled to the fitting groove 226 of the upper cover 220. And it is provided so that the gas generated in the battery cell laminate 100 inside the case 200 moves to the exhaust path member 300 side through the first discharge port 225 of the upper cover 220.

[0044] The upper cover 220 may be provided so that its length can be adjusted. For example, referring to FIGS. 4 to 6, the upper cover 220 may include a first plate 221 and a second plate 223. Concavo-convex first rails 222 are formed on the first plate 221, and concavo-convex second rails 224 corresponding to the first rails 222 of the first plate 221 are formed on the second plate 223.

[0045] As shown in FIGS. 5 and 6, the first plate 221 and the second plate 223 may be coupled via the first rails 222 and the second rails 224. And the first plate 221 and the second plate 223 are provided so as to move relative to each other along the first rails 222 and the second rails 224. In this way, the length of the upper cover 220 can be adjusted while the first plate 221 and the second plate 223 move.

[0046] However, this is merely one embodiment, and there can be various other ways to adjust the length of the upper cover 220. Thus, if the length of the upper cover 220 is adjusted, there is an advantage that it can be applied to battery cells having various lengths.

[0047] Here, a fitting groove 226 can be formed at the end of the upper cover 220, and the exhaust path member 300 is fitted and fixed into the fitting groove 226. However, there can be various ways in which the exhaust path member 300 is coupled to the upper cover 220.

[0048] The case 200 can be formed with a through-hole (not shown) through which the aforementioned connector element or terminal element can be exposed to the outside. That is, the connector element or terminal element can be electrically connected to a predetermined external component or member, and a through-hole can be formed in the case 200 so that such an electrical connection is not obstructed by the case 200.

[0049] The exhaust path member 300 is mounted on the case 200 to provide a gas discharge path, and although the gas is discharged, it is provided to prevent the outflow of flames.

[0050] Referring to FIG. 3, there can be a plurality of exhaust path members 300, and any one exhaust path member 300a among the plurality of exhaust path members 300 and another adjacent exhaust path member 300b can be arranged in a staggered manner.

[0051] That is, when any one exhaust path member 300a is away from the first peripheral edge 227 of the case 200, the other adjacent exhaust path member 300b can be configured to be away from the second peripheral edge 228 of the case 200.

[0052] Here, although the gas moves from the first discharge port 225 along the direction of the arrow in FIG. 3 and is discharged through the second discharge port 410, the flame is blocked by the exhaust path member 300 and cannot move.

[0053] Referring to FIGS. 7 to 10, the exhaust path member 300 may include an inner partition 310, a height adjustment partition 320, and an outer partition 330.

[0054] The inner partition 310 is located inside the outer partition 330, and a coupling groove 311 may be formed in the inner partition 310. The height adjustment partition 320 is coupled to the coupling groove 311 of the inner partition 310. The coupling groove 311 may be formed at various positions of the inner partition 310, and for example, as shown in FIG. 7, it may be formed on the upper side and the lower side.

[0055] In FIG. 7, the coupling grooves 311 are formed on both the upper side and the lower side of the inner partition 310, but the coupling groove 311 may be formed on only one of the upper side and the lower side of the inner partition 310.

[0056] One or more height adjustment partitions 320 may be provided and coupled to the coupling groove 311 of the inner partition 310. Referring to FIG. 7, a protrusion 321 corresponding to the shape of the coupling groove 311 may be formed on the height adjustment partition 320, and the protrusion 321 of the height adjustment partition 320 may be configured to be coupled to the coupling groove 311 of the inner partition 310.

[0057] The height adjustment partition 320 can adjust the overall height of the exhaust path member 300 while moving upward and downward along the coupling groove 311 of the inner partition 310. Details of this will be described later.

[0058] The height adjustment partition 320 may be fixed by a fixing pin 340. For this purpose, as shown in FIG. 7, a through hole 312 is formed on the side surface of the inner partition 310, and a plurality of fixing grooves 322 may be formed on the height adjustment partition 320.

[0059] Then, as shown in FIG. 8, the fixing pin 340 is inserted into the through hole 312 of the inner partition 310 and the fixing groove 322 of the height adjustment partition 320 together, so that the height adjustment partition 320 can be fixed as shown in FIG. 9. FIG. 9 shows a state in which a plurality of height adjustment partitions 320 are longitudinally coupled above the inner partition 310 in FIG. 8, and each of the height adjustment partitions 320 is fixed using the fixing pin 340.

[0060] Then, as shown in FIG. 12, the height adjustment partition 320 can be moved upward from FIG. 8 and fixed using the fixing pin 340, whereby the height of the exhaust path member 300 can be adjusted.

[0061] That is, the fixing pin 340 passes through the through hole 312 of the inner partition 310 and is inserted into any one of the plurality of fixing grooves 322 of the height adjustment partition 320 to fix the height adjustment partition 320, and the height of the exhaust path member 300 can be configured to be determined according to the vertical position of the height adjustment partition 320.

[0062] Referring to FIG. 11, the outer partition 330 is configured to cover the inner partition 310. The outer partition 330 can cover the inner partition 310 in various ways. For example, as shown in FIG. 10, the outer partition 330 can be coupled to the inner partition 310 in a sliding manner.

[0063] That is, as one embodiment, a guide groove 313 is formed at the peripheral edge of the inner partition 310, a protrusion 331 is formed at the peripheral edge of the outer partition 330, and the protrusion 331 of the outer partition 330 can be provided to move along the guide groove 313 of the inner partition 310.

[0064] For example, as shown in FIG. 13, in this way, the outer partition 330 can be moved from the inner partition 310 and adjusted so that the overall length of the exhaust path member 300 becomes longer.

[0065] Referring to FIGS. 2 and 3, the lid 400 is coupled to the case 200 so as to cover the exhaust path member 300, and a second discharge port 410 is formed in the lid 400 so that the gas that has moved through the exhaust path member 300 can be discharged. Here, the lid 400 is coupled to the upper cover 220, and the exhaust path member 300 is positioned between the lid 400 and the upper cover 220.

[0066] That is, the gas generated inside the case 200 moves to the exhaust path member 300 through the first discharge port 225 of the upper cover 220, and is discharged to the outside from the exhaust path member 300 through the second discharge port 410 of the lid 400.

[0067] Here, the first discharge port 225 formed in the case 200 and the second discharge port 410 formed in the lid 400 are formed in opposite directions. Since the flame basically moves upward, according to the above-described structure, even if the flame rises upward through the first discharge port 225, it is blocked by the exhaust path member 300 and cannot move, and thus, the flame cannot move to the second discharge port 410 formed in the direction opposite to the first discharge port 225.

[0068] Thereby, although the gas can flow out to the second discharge port 410 while being guided by the exhaust path member 300 from the first discharge port 225, the flame cannot be discharged through the second discharge port 410.

[0069] Hereinafter, with reference to the accompanying drawings, the operation and effects of the battery module 10 according to an embodiment of the present invention will be described.

[0070] Referring to FIGS. 1 and 2, a battery cell stack 100 is accommodated inside the case 200. Referring to FIG. 3, a first discharge port 225 is formed in the upper cover 220 of the case 200, and the exhaust path member 300 is attached to the upper cover 220.

[0071] Then, referring to FIGS. 2 and 3, the second discharge port 410 of the lid 400 is formed in a direction far from and opposite to the first discharge port 225 of the upper cover 220.

[0072] The case 200 is provided such that the length can be adjusted while the first plate 221 formed with the concavo-convex first rail 222 and the second plate 223 formed with the concavo-convex second rail 224 are joined and move.

[0073] Here, the exhaust path member 300 may include an inner partition 310, a height adjustment partition 320, an outer partition 330, and a fixing pin 340. The height of the exhaust path member 300 can be adjusted by the height adjustment partition 320, and the outer partition 330 may be provided so as to be slidable along the inner partition 310 and configured such that the length can be adjusted.

[0074] After the length of the case 200 is adjusted and the height and length of the exhaust path member 300 are adjusted, when the exhaust path member 300 is attached to the case 200, although the flame is blocked by the exhaust path member 300 and cannot move, the gas can be discharged through the path as shown in FIG. 3.

[0075] Here, the case 200 may be formed of a metal plate or a mica plate, and since the first discharge port 225 and the second discharge port 410 are located in opposite directions, the flame generated by ignition in the battery cell inside the case 200 cannot be discharged.

[0076] As a result, when a flame occurs in the battery cell, although the gas is discharged to the outside of the case 200, there is an effect that the outflow of the flame can be prevented.

[0077] Referring to FIGS. 14 to 16, the exhaust path member 300 can be provided in various ways. Referring to FIG. 14, compared with FIG. 3, when the number of battery cells or battery cell stacks 100 is further increased or the length of the battery cell or battery cell stack 100 is further increased, the case 200 is adjusted to be longer, and the length of the exhaust path member 300 can also be adjusted to be longer so as to correspond to the size of the case 200.

[0078] Referring to FIG. 15, when the number of battery cells or battery cell stacks 100 is further reduced or the length of the battery cells or battery cell stacks 100 is further shortened compared to FIG. 3, the case 200 is adjusted to be shorter, and the length of the exhaust path member 300 can also be adjusted to be shorter so as to correspond to the size of the case 200.

[0079] Referring to FIG. 16, when the explosive force of the battery cell is weaker compared to FIG. 3, a low-rigidity structure can be applied, so the number of exhaust path members 300 can be reduced to reduce costs.

[0080] However, each of FIGS. 14 to 16 is merely one embodiment of a modification, and the battery module 10 according to an embodiment of the present invention can have even more modifications.

[0081] On the other hand, a battery pack (not shown) according to an embodiment of the present invention may include one or more battery modules 10 according to an embodiment of the present invention as described above. In addition to such battery modules 10, the battery pack (not shown) may further include a housing for accommodating such battery modules 10, various devices for controlling the charging and discharging of the battery modules 10, a so-called Battery Management System (BMS), a current sensor, a fuse, and the like.

[0082] On the other hand, an automobile (not shown) according to an embodiment of the present invention may include the aforementioned battery module 10 or battery pack (not shown), and the battery pack (not shown) may include the battery module 10. And the battery module 10 according to an embodiment of the present invention is applicable to a predetermined automobile (not shown) provided to use electricity, such as an electric vehicle or a hybrid vehicle.

[0083] As described above, the present invention has been explained with reference to limited embodiments and drawings. However, the present invention is not limited thereto, and it goes without saying that various modifications and variations can be made by those having ordinary knowledge in the technical field to which the present invention pertains within the equivalent scope of the technical idea and claims of the present invention.

Industrial Applicability

[0084] The present invention relates to a battery module, a battery pack including the same, and an automobile, and is particularly applicable to industries related to secondary batteries.

Claims

1. A battery cell stack in which a plurality of battery cells are stacked, a case in which the battery cell stack is accommodated and a first discharge port through which gas is discharged is formed, a plurality of exhaust path members attached to the case to provide an exhaust path for the gas and arranged in a staggered pattern so that the gas is discharged but the outflow of flame is prevented, a lid body coupled to the case so as to cover the plurality of exhaust path members and having a second discharge port through which the gas that has moved through the plurality of exhaust path members is discharged, comprising one cover included in the case is provided so that its length can be adjusted, a battery module.

2. The first discharge port formed in the case and the second discharge port formed in the lid body are formed in opposite directions from each other, The battery module according to claim 1, wherein the gas is guided from the first discharge port by the plurality of exhaust path members and flows out to the second discharge port.

3. The case a lower cover in which the battery cell stack is accommodated, an upper cover coupled to the lower cover, to which the plurality of exhaust path members are attached, in which the first discharge port is formed, and whose length is adjustable, comprising The lid body is coupled to the upper cover, and the plurality of exhaust path members are located between the lid body and the upper cover. The battery module according to claim 2.

4. The upper cover a first plate on which a concavo-convex first rail is formed, a second plate to which a concavo-convex second rail is formed so as to correspond to the first rail of the first plate and which is coupled to the first plate, The battery module according to claim 3, comprising.

5. The battery module according to claim 4, wherein the first plate and the second plate are adjusted in length while moving relative to each other along the first rail and the second rail.

6. The battery module according to claim 3, wherein a fitting groove into which the plurality of exhaust path members are inserted is formed at an end of the upper cover.

7. Any one of the plurality of exhaust path members and another adjacent exhaust path member are arranged in a staggered pattern. The battery module according to claim 1.

8. The plurality of exhaust path members an inner partition with a coupling groove formed therein, at least one height adjustment partition coupled to the coupling groove of the inner partition, an outer partition that covers the inner partition, The battery module according to claim 1, including

9. The coupling groove is formed in at least one of the upper and lower sides of the inner partition, and a protrusion corresponding to the shape of the coupling groove is formed on the height adjustment partition, The battery module according to claim 8, wherein the protrusion of the height adjustment partition is coupled to the coupling groove of the inner partition.

10. further including a fixing pin for fixing the height adjustment partition, a through hole is formed in a side surface of the inner partition, a plurality of fixing grooves are formed in the height adjustment partition, The battery module according to claim 9, wherein the fixing pin passes through the through hole of the inner partition and is inserted into any one of the plurality of fixing grooves of the height adjustment partition to fix the height adjustment partition.

11. The battery module according to claim 8, wherein the outer partition is coupled to the inner partition in a sliding manner.

12. a guide groove is formed in a peripheral edge portion of the inner partition, and a protrusion is formed in a peripheral edge portion of the outer partition, The battery module according to claim 11, wherein the protrusion of the outer partition moves along the guide groove of the inner partition.

13. A battery pack including the battery module according to any one of claims 1 to 12.

14. An automobile including the battery module according to any one of claims 1 to 12.

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