Battery module, and battery pack and vehicle comprising same

Abstract

A battery module according to an embodiment of the present invention may comprise: a plurality of battery cells constituting a plurality of cell units; a housing configured to accommodate the plurality of cell units; and a separator interposed between adjacent cell units.

Description

Battery module, battery pack including the same, and automobile

[0001] The present invention relates to a battery module, a battery pack including the same, and an automobile.

[0002] This application is a priority application for Korean Patent Application No. 10-2024-0191752 filed on December 19, 2024, and all contents disclosed in the specification and drawings of said application are incorporated into this application by reference.

[0003] This application is a priority application for Korean Patent Application No. 10-2025-0009042 filed on January 21, 2025, and all contents disclosed in the specification and drawings of said application are incorporated into this application by reference.

[0004] Secondary batteries, which possess electrical characteristics such as high energy density and high applicability across product groups, are widely applied not only to portable devices but also to electric vehicles (EVs) or hybrid electric vehicles (HEVs) powered by electric sources. These secondary batteries are attracting attention as a new energy source for enhancing eco-friendliness and energy efficiency, not only for the primary advantage of drastically reducing the use of fossil fuels but also because they generate no by-products from energy use.

[0005] Currently, widely used types of rechargeable batteries include lithium-ion batteries, lithium-polymer batteries, nickel-cadmium batteries, nickel-hydrogen batteries, and nickel-zinc batteries. When high output voltage is required, multiple battery cells are connected in series to form a battery module or battery pack. Additionally, to increase charge / discharge capacity, multiple battery cells are connected in parallel to form a battery module or battery pack.

[0006] When configuring a battery pack by connecting multiple battery cells in series or parallel, it is common practice to first construct a battery module containing at least one battery cell, and then use this at least one battery module to add other components to form a battery pack or battery rack. Alternatively, recently, battery packs in the form of a "Cell-to-Pack," in which multiple battery cells are directly housed in a pack housing without modularization, are also being manufactured.

[0007] Meanwhile, when multiple battery modules are included within a battery pack in this manner, it may be vulnerable to thermal chain reactions between the modules. For example, if an event such as thermal runaway occurs within a single battery module, this runaway can propagate to other battery modules. If the propagation of thermal runaway between battery modules is not properly suppressed, an event originating in a specific module can trigger a chain reaction across multiple modules, potentially causing major problems such as explosions or fires.

[0008] In particular, if an event such as thermal runaway occurs in a single battery module, a chain reaction of thermal runaway may occur due to heat conduction through the body of the battery cells. Furthermore, since battery cells are housed in a single battery module without compartmentalization, heat transfer such as convection and radiation occurs between the cells, and heat accumulates internally, which can accelerate the propagation of thermal runaway.

[0009] Therefore, there is a need to develop a structure capable of suppressing or preventing thermal runaway among battery cells by inhibiting heat transfer, such as heat conduction, convection, and radiation, between the battery cell where the event occurred and other battery cells when thermal runaway occurs in a battery module.

[0010] In addition, conventional battery modules are provided with venting holes on the upper surface; however, if side venting occurs in the direction of the lead of a battery cell that is not equipped with a venting hole, rapid thermal runaway may occur.

[0011] Therefore, there is a need to develop a structure that, in the event of thermal runaway in a battery module, suppresses side venting toward the cell terrace equipped with electrode leads of battery cells without venting holes, thereby inducing directional venting toward the venting holes.

[0012] Accordingly, the problem that the present invention aims to solve is to provide a battery pack and an automobile capable of preventing or suppressing the propagation of thermal runaway between battery cells by minimizing the thermal energy received by adjacent battery cells when thermal runaway occurs in a battery module.

[0013] However, the problems that the present invention aims to solve are not limited to those described above, and other unmentioned problems will be clearly understood by those skilled in the art from the description of the invention below.

[0014] To solve the above problem, the present invention provides a battery module characterized by comprising: a plurality of battery cells forming a plurality of cell units; a housing configured to accommodate the plurality of cell units; and a separator interposed between adjacent cell units.

[0015] A battery module according to one embodiment of the present invention may further include an insulating pad provided on at least one side of the separator.

[0016] The above separator may have a hollow structure.

[0017] The above separator can be configured to be coupled to the above housing.

[0018] The above housing includes a lower frame configured to accommodate the plurality of battery cells and an upper frame coupled to the lower frame and configured to cover the plurality of battery cells from above, and the separator may be configured to be coupled to at least one of the lower frame and the upper frame.

[0019] A battery module according to one embodiment of the present invention may further include a busbar frame provided for each of the plurality of cell units and coupled to at least one side of the cell unit.

[0020] The above separator may be configured to penetrate between adjacent busbar frames.

[0021] The above busbar frame may have a space formed on its inner side into which the cell terrace of the battery cell is inserted and configured to allow the expansion of the cell terrace.

[0022] The above housing may further include an insulating cover provided on the outer side of the busbar frame.

[0023] The above separator can be configured to be coupled to the inner surface of the insulation cover.

[0024] The above separator may be interposed between adjacent insulating covers.

[0025] The above housing may include an end frame configured to cover both longitudinal sides of at least one of the plurality of cell units.

[0026] The above separator may be configured to face the inner surface of the end frame.

[0027] The above end frame is provided by dividing it into multiple parts, and the separator may be configured to partition the space between adjacent end frames.

[0028] A battery module according to one embodiment of the present invention may further include a protective member provided for each cell unit and configured to cover both sides of the cell unit.

[0029] In addition, the present invention provides a battery pack characterized by including a battery module according to the present invention.

[0030] And, the present invention provides an automobile characterized by including a battery pack according to the present invention.

[0031] According to one aspect of the present invention, as a separator is provided between cell units, when a thermal event occurs in a cell unit, the generated heat can be released to the outside through the separator. Accordingly, the safety and reliability of the battery module can be guaranteed.

[0032] In addition, according to another aspect of the present invention, since a plurality of cell units can be partitioned by a separator, even if a thermal event occurs in any cell unit, the movement of venting gas, sparks, electrode discharges, etc. generated in the battery cell toward other cell units can be suppressed. As a result, the propagation of thermal runaway between battery cells can be prevented or suppressed.

[0033] In addition, according to another aspect of the present invention, venting gas, sparks, electrode discharges, etc. generated in the battery cell when a thermal event occurs can be discharged to the outside of the battery module through the venting hole, thereby allowing the heat accumulation within the battery module to be quickly relieved.

[0034] Furthermore, according to another aspect of the present invention, a housing can be manufactured through press forming without the process of surrounding battery cells with specific bands or straps. This eliminates the need for a joining process between the components of the housing and ensures higher structural rigidity. Additionally, productivity or processability can be improved during the manufacturing of battery modules.

[0035] In addition, according to another aspect of the present invention, by means of a side venting suppression structure of a busbar frame, stress concentrated on the cell terrace of a battery cell can be minimized, thereby suppressing side venting toward the cell terrace side where the electrode lead of the battery cell is provided. Accordingly, directional venting toward the upper side where the venting hole is provided can be induced.

[0036] In addition, according to another aspect of the present invention, events such as fire or explosion caused by thermal runaway phenomena in a battery pack including a plurality of battery modules or a device equipped with them can be prevented or delayed.

[0037] In addition to the above, the present invention may have various other effects, which are described in each embodiment, or effects that can be easily inferred by those skilled in the art, etc., will be omitted.

[0038] 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.

[0039] FIG. 1 is an overall perspective view of a battery module according to one embodiment of the present invention.

[0040] FIG. 2 is an exploded perspective view of a battery module according to one embodiment of the present invention.

[0041] FIG. 3 is a cross-sectional view of a battery module according to an embodiment of the present invention. For example, FIG. 3 may be a cross-sectional view taken along line I-I' of FIG. 1.

[0042] FIG. 4 is a perspective view of a separator and an insulating pad included in a battery module according to one embodiment of the present invention.

[0043] FIG. 5 is a perspective view of a separator and an insulating pad included in a battery module according to another embodiment of the present invention.

[0044] FIG. 6 is a perspective view of a separator included in a battery module according to another embodiment of the present invention.

[0045] FIG. 7 is a diagram showing the disassembled view of some components included in a battery module according to one embodiment of the present invention.

[0046] FIG. 8 is an enlarged cross-sectional view of a part of a battery module according to one embodiment of the present invention.

[0047] FIG. 9 is a diagram showing a disassembled view of some components included in a battery module according to one embodiment of the present invention.

[0048] FIG. 10 is a cross-sectional view of a battery module according to one embodiment of the present invention, viewed from above. For example, FIG. 10 may be a cross-sectional view taken along line II-II' of FIG. 1.

[0049] FIG. 11 is an enlarged cross-sectional view of a part of a battery module according to one embodiment of the present invention. For example, FIG. 11 may be an enlarged view of part A of FIG. 10.

[0050] FIG. 12 is an enlarged cross-sectional view of a part of a battery module according to one embodiment of the present invention. For example, FIG. 12 is an enlarged view of part B of FIG. 10.

[0051] FIG. 13 is an overall perspective view of a battery module according to another embodiment of the present invention.

[0052] FIG. 14 is a cross-sectional view of a battery module according to another embodiment of the present invention. For example, FIG. 14 may be a cross-sectional view taken along III-III' of FIG. 13.

[0053] FIG. 15 is an enlarged cross-sectional view of a part of a battery module according to another embodiment of the present invention. For example, FIG. 15 is an enlarged view of part C of FIG. 14.

[0054] FIG. 16 is a drawing showing a disassembled view of a part of a battery module according to another embodiment of the present invention.

[0055] FIG. 17 is a cross-sectional view of a battery module according to another embodiment of the present invention.

[0056] FIG. 18 is a cross-sectional view showing a disassembled view of a part of a battery module according to one embodiment of the present invention.

[0057] FIG. 19 is a schematic perspective view of a battery pack including a battery module according to one embodiment of the present invention.

[0058] FIG. 20 is a schematic perspective view of a vehicle including a battery pack according to one embodiment of the present invention.

[0059] Hereinafter, preferred 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, but 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.

[0060] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas 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.

[0061] In addition, the present invention includes various embodiments. For each embodiment, redundant descriptions of substantially identical or similar configurations are omitted, and the focus is on the differences.

[0062] Meanwhile, although terms indicating directions such as up, down, left, right, front, and back may be used in the present invention, these terms are used merely for convenience of explanation and may vary depending on the position of the object or the position of the observer, as is obvious to those skilled in the art of the present invention.

[0063] For example, in an embodiment of the present invention, the X-axis direction shown in the drawing may mean the left-right direction, the Y-axis direction may mean the front-back direction perpendicular to the X-axis direction on the horizontal plane (XY plane), and the Z-axis direction may mean the up-down direction (vertical direction) perpendicular to both the X-axis direction and the Y-axis direction.

[0064]

[0065] FIG. 1 is an overall perspective view of a battery module according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a battery module according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of a battery module according to an embodiment of the present invention. For instance, FIG. 3 may be a drawing showing the cross-sectional view taken along line I-I' of FIG. 1.

[0066] Referring to FIGS. 1 to 3, a battery module (10) according to one embodiment of the present invention includes a battery cell (100), a housing (200), and a separator (300).

[0067] First, referring primarily to FIG. 2, a plurality of battery cells (100) may be included. Although not shown in the drawing, these plurality of battery cells (100) may include an electrode assembly, a cell case that accommodates the electrode assembly, and an electrode lead (110) that is connected to the electrode assembly and extends outward from the cell case to function as an electrode terminal. At this time, the plurality of battery cells (100) may be electrically connected to each other.

[0068] The battery cell (100) may be a pouch-type secondary battery. The cell case of such a pouch-type secondary battery may be configured in the form of a pouch in which a metal layer made of aluminum is interposed between polymer layers.

[0069] A plurality of battery cells (100) can be arranged side by side in the front-back direction (Y-axis direction) while standing upright in the vertical direction (Z-axis direction), as shown in FIG. 2.

[0070] Meanwhile, the present invention is not limited by the specific type or shape of such battery cell (100), and various battery cells (100) known at the time of filing the present invention may be employed to constitute the battery pack (1) of the present invention. In this embodiment, a pouch-type secondary battery with high energy density and easy stacking is used as shown in the drawing, but it is understood that cylindrical or prismatic secondary batteries may also be applied as battery cells (100).

[0071] A plurality of battery cells (100) may be configured to form a plurality of cell units (U). A plurality of battery cells (100) may be grouped into one or more cell units (U). That is, a battery module (10) according to the present invention includes a plurality of battery cells (100), and the plurality of battery cells (100) included in the battery module (10) may be divided and included in a plurality of cell units (U). At this time, the multiple battery cells (100) included within the cell unit (U) may be electrically connected to each other.

[0072] For example, as in the embodiment illustrated in FIG. 2, the battery module (10) includes four cell units (U), and the cell units (U) may include six battery cells (100). However, the number of battery cells (100) included in the cell units (U) and the number of cell units (U) may vary depending on the capacity of the battery module (10), module dimensions, layout of the battery pack, etc.

[0073] A plurality of cell units (U) may be arranged along at least one direction inside the housing (200). For example, as in the embodiment shown in FIG. 2, a plurality of cell units (U) may be arranged along the stacking direction of the battery cells (100).

[0074] The housing (200) may be configured to accommodate a plurality of battery cells (100). The housing (200) may be configured to accommodate a plurality of cell units (U) at once. Specifically, an internal space may be formed in the housing (200), and the internal space may be configured to accommodate a plurality of cell units (U).

[0075] This housing (200) may be made of a metal material having rigidity and heat resistance to physically or chemically protect the housed battery cell (100).

[0076] The separator (300) may be provided between battery cells (100). The separator (300) may be configured to group multiple battery cells (100). The separator (300) may be configured to make contact with the housing of the battery cells (100).

[0077] In particular, a separator (300) may be provided between cell units (U). The separator (300) may be configured to partition or separate the cell units (U). For example, as shown in FIG. 3, a separator (300) may be placed for every four cell units (U) to group the cell units (U) into groups of four.

[0078] A separator (300) may be included in at least one battery module (10). Multiple separators (300) may be provided. Separators (300) may be arranged along one direction in which cell units (U) are arranged. Separators (300) may be provided in a configuration such that they are arranged for at least one cell unit (U).

[0079] The separator (300) can be made of a material with good heat dissipation performance. In addition, the separator (300) can be made of a material with good thermal conductivity. For example, the separator (300) can be made of aluminum.

[0080] According to the above embodiment of the present invention, since the battery cells (100) within the battery module (10) can be reliably partitioned or separated into cell units (U) by the separator (300), the transfer of gas or flames to adjacent cell units (U) can be prevented or suppressed.

[0081] Thus, even if a thermal event occurs in any cell unit (U), heat can be rapidly released to the outside by the separator (300), so that the accumulation of heat inside the battery module (10) can be suppressed. Accordingly, according to the above aspect of the present invention, the safety and reliability of the battery module (10) can be guaranteed.

[0082] Furthermore, the separator (300) may be configured to be connected to a cooling path provided on the inside and / or outside of the housing (200). For example, the separator (300) may be in direct or indirect contact with a heat transfer material, such as thermal resin, provided on the outside of the housing (200). In this case, the separator (300) can rapidly release heat received from the battery cells (100) to the outside through the heat transfer material. This can further improve the heat dissipation performance of the separator (300).

[0083]

[0084] FIG. 4 is a perspective view of a separator and an insulating pad included in a battery module according to one embodiment of the present invention.

[0085] The separator (300) may be made of a material having heat dissipation performance such as aluminum, and thus may require a structure to secure thermal insulation performance.

[0086] As an example, as in the embodiment illustrated in FIG. 4, a battery module (10) according to one embodiment of the present invention may further include an insulating pad (400). The insulating pad (400) may be provided on at least one side of the separator (300). For instance, as in the embodiment illustrated in FIG. 4, the insulating pad (400) may be provided on both sides of the separator (300). The insulating pad (400) may include a first insulating pad (400A) and a second insulating pad (400B) provided on each side of the separator (300).

[0087] The length of the insulation pad (400) may be configured to be shorter than the length of the separator (300). The insulation pad (400) may be provided as a pad that is thinner than the battery cell (100) and the separator (300).

[0088] The insulation pad (400) may be made of a material with excellent thermal insulation performance. The insulation pad (400) may be made of a material having insulating properties. The insulation pad (400) may be made of a material with excellent heat resistance and / or fire resistance. Additionally, the insulation pad (400) may be made in the form of a pad with compressible force. For example, the insulation pad (400) may be made of a material such as silicone or aerogel.

[0089] According to the above embodiment of the present invention, heat such as gas or flame can be prevented from passing over the insulation pad (400) to an adjacent cell unit (U). As a result, even if a thermal event occurs in any cell unit (U), thermal damage to other cell units (U) can be suppressed, thereby preventing or suppressing the propagation of thermal runaway between battery cells (100). Accordingly, according to the above aspect of the present invention, the safety and reliability of the battery module (10) can be guaranteed.

[0090] In addition, according to the above embodiment of the present invention, the insulation pad (400) can contribute to the structural rigidity of the battery cells (100) by compressing the battery cells (100) during the swelling phenomenon of the battery cells (100).

[0091] Furthermore, insulation between the battery cell (100) and the cell unit (U) can be ensured through the insulation pad (400). However, this is not limited thereto, and in addition to this, to ensure insulation performance, the battery module (10) may further include a thin insulation sheet or apply an insulation coating to the separator (300).

[0092]

[0093] FIG. 5 is a perspective view of a separator and an insulating pad included in a battery module according to another embodiment of the present invention.

[0094] As another example, as in the embodiment illustrated in FIG. 5, the insulation pad (400) may be provided with an opening (O). The opening (O) may be configured in the form of a hole formed by partially penetrating the insulation pad (400). Multiple openings (O) may be provided. Multiple openings (O) may be spaced apart in the horizontal direction and / or the vertical direction.

[0095] According to the above embodiment of the present invention, as the insulation pad (400) is provided with an opening (O), heat generated in the cell unit (U) can be directed toward the separator (300), thereby improving the heat dissipation performance of the separator (300).

[0096] Furthermore, the first insulation pad (400A) and the second insulation pad (400B) provided on each side of the separator (300) may be configured with different shapes, thicknesses, etc.

[0097] For example, as in the embodiment illustrated in FIG. 5, the positions of the openings (O) formed in the first insulation pad (400A) and the second insulation pad (400B) may be provided differently. The openings (O) may be located in different parts of the first insulation pad (400A) and the second insulation pad (400B). The openings (O) may be positioned at staggered positions in the first insulation pad (400A) and the second insulation pad (400B).

[0098] According to the above embodiment of the present invention, heat transfer performance to the separator (300) is enhanced through the opening (O), and by positioning the openings (O) of the first insulation pad (400A) and the second insulation pad (400B) provided on both sides of the separator (300) in different parts, heat conduction between the cell units (U) on both sides of the separator (300) can be minimized.

[0099]

[0100] FIG. 6 is a perspective view of a separator included in a battery module according to another embodiment of the present invention.

[0101] As another example for increasing the thermal insulation performance of the separator (300), as in the embodiment shown in FIG. 6, the separator (300) may have a hollow structure (H). The hollow structure (H) may be formed in a shape that penetrates the interior of the separator (300). The hollow structure (H) may be formed as the separator (300) is manufactured by extrusion.

[0102] A plurality of hollow structures (H) may be provided. A plurality of hollow structures (H) may be spaced apart along the horizontal and / or vertical directions. The hollow structures (H) may be configured to extend along the height direction of the separator (300).

[0103] According to the above embodiment of the present invention, as the separator (300) is provided with a hollow structure (H), heat transferring to an adjacent cell unit (U) can be blocked or suppressed. In addition, since the weight of the separator (300) can be reduced, costs can be reduced and productivity can be improved.

[0104]

[0105] FIG. 7 is a diagram showing the disassembled view of some components included in a battery module according to one embodiment of the present invention, and FIG. 8 is an enlarged cross-sectional view of a part of a battery module according to one embodiment of the present invention.

[0106] The housing (200) may have a lower frame (210) and an upper frame (220). The lower frame (210) may be configured so that at least the upper surface is open. For example, the lower frame (210) may be configured so that the upper surface, the front, and the rear are open. That is, the lower frame (210) may be provided as a U-frame.

[0107] The lower frame (210) may be configured to cover both sides and the bottom surface in the stacking direction of a plurality of battery cells (100). At this time, the housing (200) can be manufactured through press molding without the process of surrounding the battery cells (100) with a specific band or strap during the manufacturing process of the battery module (10). According to the above embodiment of the present invention, a joining process between the components of the housing (200) is unnecessary, and higher structural rigidity can be secured. In addition, productivity or processability can be improved during the manufacturing of the battery module (10).

[0108] Meanwhile, as an example, the lower frame (210) may be configured so that one side is partially open. For instance, the lower surface of the lower frame (210) may be configured to be partially open. Thus, the battery cell (100) may be partially exposed to the outside of the housing (200) and configured to come into contact with the heat transfer material provided in the battery pack. As a result, efficient cooling performance of the battery module (10) can be secured as the cooling path is minimized.

[0109] The upper frame (220) may be provided to form the upper surface of the housing (200). The upper frame (220) may be coupled to the open upper surface of the lower frame (210).

[0110] The upper frame (220) can be joined to the lower frame (210) by welding. At this time, the combined form of the upper frame (220) and the lower frame (210) may be a rectangular tubular shape with the front and rear sides open. The upper frame (220) and the lower frame (210) may each be manufactured separately and then joined and fixed through welding or the like. However, the present invention is not limited to such a specific combined form of the housing (200).

[0111] The housing (200) may include an end frame (230). The end frame (230) may be configured to cover both longitudinal sides of a plurality of battery cells (100). The end frame (230) may be attached to the open ends of the upper frame (220) and the lower frame (210) while the upper frame (220) and the lower frame (210) are combined. The end frame (230) may be welded to the lower frame (210) and the upper frame (220).

[0112] Additionally, the end frame (230) may partially have holes or slits for exposing parts that need to be exposed to the outside, such as the positive terminal and negative terminal or connector of the battery module (10).

[0113] These lower frame (210), upper frame (220) and end frame (230) may be made of a metal material having rigidity and heat resistance to physically or chemically protect the accommodated battery cell (100).

[0114] In addition, the housing (200) may be formed in various other shapes. For example, the housing (200) may have a box-shaped lower case having an upper open end and an upper cover that closes the upper open end of the lower case.

[0115] Meanwhile, a venting hole (VH) may be formed in the housing (200). The venting hole (VH) may be configured to discharge venting gas generated in the battery cell (100) to the outside of the housing (200). One-way directional venting may be possible through the venting hole (VH).

[0116] A venting hole (VH) may be formed on at least one side of the housing (200). The venting hole (VH) may be formed by penetrating one side of the housing (200). For example, the venting hole (VH) may be formed in the upper frame (220). Thus, in the battery module (10) according to one embodiment of the present invention, venting to the upper side of the battery module (10) can be achieved.

[0117] Venting holes (VH) may be provided in multiple numbers and may be arranged at regular intervals from each other in the horizontal direction.

[0118] According to the above embodiment of the present invention, high-temperature gas or flames generated in the battery cell (100) in the event of an abnormal situation of the battery cell (100) can be rapidly discharged to the outside of the battery module (10), thereby effectively preventing or delaying the propagation of thermal runaway between battery cells (100). As a result, the safety and reliability of the battery module (10) can be guaranteed.

[0119]

[0120] Referring to FIGS. 7 and 8, the separator (300) may be configured to be connectable to the housing (200). At least one of the four ends of the separator (300) may be connected to the housing (200). The separator (300) may be connected to the housing (200) by a connecting member (800). For example, the connecting member (800) may be a bolt. However, the present invention is not limited to a specific form of connection between the separator (300) and the housing (200).

[0121] A coupling hole (CH) into which a coupling member (800) can be inserted may be formed in the housing (200). Multiple coupling holes (CH) may be provided.

[0122] According to the above embodiment of the present invention, the fixing force can be improved as the separator (300) is coupled to the housing (200). As a result, the arrangement state of the separator (300) is stably maintained, and the performance of partition separation between cell units (U) can be further improved.

[0123] More specifically, the separator (300) may be configured to be coupled to at least one of the lower frame (210) and the upper frame (220). For example, the lower end of the separator (300) may be coupled to the lower surface of the lower frame (210). Alternatively, the upper end of the separator (300) may be coupled to the upper surface of the upper frame (220). Alternatively, the height-direction ends of the separator (300) may be coupled to the lower frame (210) and the upper frame (220), respectively.

[0124] A coupling hole (CH) may be provided in at least one of the lower frame (210) and the upper frame (220). The coupling hole (CH) may be arranged along the longitudinal direction of the separator (300).

[0125] According to the above embodiment of the present invention, since the separator (300) is coupled to the housing (200) by the coupling member (800) and both ends of the separator (300) can be restrained, the fixing force between the separator (300) and the housing (200) can be further improved. As a result, the arrangement state of the cell unit (U) and the separator (300) can be stably maintained, so the heat dissipation performance of the separator (300) can be stably secured.

[0126] In addition, according to the above embodiment of the present invention, the cell units (U) are more clearly separated into compartments, so that the performance of preventing gas or flame propagation between cell units (U) can be further improved.

[0127] Furthermore, according to the above embodiment of the present invention, the possibility of high temperature, high pressure venting gas or flame pushing out the separator (300) or the separator (300) bending due to internal pressure of the venting gas can be reduced.

[0128] Accordingly, according to the above embodiment of the present invention, when thermal runaway propagation occurs in the battery module (10), thermal runaway propagation between battery cells (100) can be effectively prevented or delayed. As a result, the safety and reliability of the battery module (10) can be guaranteed.

[0129]

[0130] FIG. 9 is a diagram showing a disassembled view of a portion of a component included in a battery module according to an embodiment of the present invention. FIG. 10 is a cross-sectional view of a battery module according to an embodiment of the present invention viewed from above. For instance, FIG. 10 may be a diagram showing the cross-sectional view taken along line II-II' of FIG. 1.

[0131] Referring to FIG. 9, the battery module (10) of the present invention may further include a busbar frame (500). The busbar frame (500) may be configured to cover at least one side of a plurality of battery cells (100). In this embodiment, as shown in FIG. 2, the busbar frame (500) may be coupled to the front and rear of a plurality of battery cells (100).

[0132] In particular, as in the embodiment illustrated in FIG. 9, a busbar frame (500) may be provided for each of the plurality of cell units (U). The busbar frame (500) may be coupled to at least one side of the cell unit (U). That is, the busbar frame (500) may be coupled to at least one side of each cell unit (U).

[0133] The busbar frame (500) can be formed from a material having electrical insulation properties, such as plastic.

[0134] At this time, as in the embodiment illustrated in FIG. 10, the separator (300) may be configured to partition or separate the busbar frames (500). The separator (300) may be configured to penetrate between adjacent busbar frames (500). The end of the separator (300) may be configured to protrude in the longitudinal direction beyond the busbar frames (500). Thus, the separator (300) can separate not only the cell units (U) but also the busbar frames (500) connected to each cell unit (U).

[0135] In this case, although not shown in the drawing, a structure may be additionally provided in which the separator (300) is coupled to both sides in the width direction (X-axis direction) of the busbar frame (500). For example, the separator (300) and the busbar frame (500) may be structurally constrained or bolted together.

[0136] According to the above embodiment of the present invention, venting gas or flames emitted from the front and rear sides, such as the electrode lead (110) of the battery cell (100), may be suppressed or prevented from moving beyond the separator (300) toward another cell unit (U). As a result, thermal runaway propagation between battery cells (100) can be more effectively prevented or suppressed.

[0137]

[0138] Meanwhile, the busbar frame (500) may be provided with lead slits (510) capable of drawing out the electrode leads (110) of the battery cell (100) to the outside. The lead slits (510) may be configured to extend long along the height direction of the battery cell (100). The electrode leads (110) drawn out to the outside of the busbar frame (500) through the lead slits (510) may be stacked together.

[0139] Additionally, referring to FIGS. 2 and FIGS. 9, a battery module (10) according to one embodiment of the present invention may further include a bus bar (600). The bus bar (600) may be provided on the outer surface of a bus bar frame (500). A plurality of bus bars (600) may be provided.

[0140] A plurality of busbars (600) may be configured to connect battery cells (100) in series and / or in parallel. The busbars (600) may be provided in the form of rods made of metal materials such as copper, aluminum, nickel, etc.

[0141] The electrode leads of the battery cells (100) pass through the lead slit (510) of the busbar frame (500) and are drawn out to the outside of the busbar frame (500), and the drawn-out portion can be attached to the surface of the busbar (600) by means such as welding.

[0142] At least some of the multiple busbars (600) can function as terminals for electrical connection between partitioned cell units (U). These busbars (600) can be configured to be drawn out to the outside of the busbar frame (500) and the end frame (230).

[0143] Referring to FIGS. 1 and FIGS. 9, a battery module (10) according to one embodiment of the present invention may further include an interbus bar (700) configured to electrically connect the terminals. The interbus bar (700) may be configured to be seated on a bus bar (600) that serves as a terminal.

[0144]

[0145] Meanwhile, the battery cell (100) may be provided with a cell terrace (T) configured to be sealed on the side where the electrode lead (110) is drawn out. The cell terrace (T) may be provided on the front and rear sides of the battery cell (100). At this time, as in the embodiment shown in FIG. 10, the busbar frame (500) may be configured so that at least a portion of the cell terrace (T) of the battery cell (100) is inserted into its inner surface. The busbar frame (500) may have a space (S) formed on its inner surface to allow for the expansion of the cell terrace (T). The space (S) may be configured in the form of a groove formed on the inner surface of the busbar frame (500).

[0146] Additionally, when gas is concentrated and expands in the cell terrace (T) of the battery cell (100), the shape of the space (S) can be configured to correspond to the shape of the cell terrace (T) of the battery cell (100) when it is expanded.

[0147] As the electrode lead (110) is drawn outward, stress may be concentrated in the cell terrace (T) by the venting gas during the venting of the battery cell (100). That is, the surrounding area of ​​the cell terrace (T) can be easily opened by internal pressure.

[0148] However, according to the above embodiment of the present invention, the expansion of the cell terrace (T) during the venting of the battery cell (100) is partially allowed by the space (S), so that stress is concentrated on the cell terrace (T) during the venting of the battery cell (100) and the opening of the cell terrace (T) can be suppressed.

[0149] In particular, according to the above embodiment of the present invention, side venting toward the cell terrace (T) side of the battery cell (100) that is not equipped with a venting hole (VH) can be suppressed. Accordingly, directional venting toward the upper side equipped with a venting hole (VH) can be induced.

[0150]

[0151] FIG. 11 is an enlarged cross-sectional view of a part of a battery module according to one embodiment of the present invention. For example, FIG. 11 may be an enlarged view of part A of FIG. 10.

[0152] Referring to FIG. 2 and FIG. 11, etc., the housing (200) may further include an insulating cover (240). The insulating cover (240) may be provided on the inside of the end frame (230). The insulating cover (240) may be provided on the outside of the busbar frame (500). That is, the insulating cover (240) may be provided between the end frame (230) and the busbar frame (500).

[0153] The insulating cover (240) may be made of an insulating material. For example, the insulating cover (240) may be made of plastic. The insulating cover (240) may be configured to insulate between the end frame (230) and the bus bar (600), battery cell (100), separator (300), etc., provided on the inside of the housing (200).

[0154] Referring to FIGS. 10 and 11, some of the plurality of separators (300) may be configured to be coupled to the inner surface of the insulating cover (240). The end portion of the separator (300) may be configured to be coupled to the inner surface of the busbar frame (500). For example, the busbar frame (500) may be configured so that at least a portion of the separator (300) is inserted therein.

[0155] As a more specific example, as in the embodiment illustrated in FIG. 11, the busbar frame (500) may be provided with a coupling projection (241). The coupling projection (241) may be configured to protrude inward from the inner surface of the busbar frame (500). The coupling projection (241) may be configured to extend long along the height direction of the insulating cover (240).

[0156] The coupling protrusions (241) may be provided in a pair. The pair of coupling protrusions (241) may form a groove into which the end portion of the separator (300) can be inserted. The spacing between the pair of coupling protrusions (241) may be configured to be approximately equal to the thickness of the separator (300).

[0157] These coupling protrusions (241) can serve to guide the coupling position of the insulating cover (240) when the insulating cover (240) is coupled to the battery cell (100) and the separator (300). This improves the ease of assembly when manufacturing the battery module (10).

[0158] According to the above embodiment of the present invention, since the separator (300) is coupled to the insulating cover (240) and both ends in the longitudinal direction of the separator (300) can be restrained, a fixing force between the separator (300) and the insulating cover (240) can be secured.

[0159] Furthermore, according to the above embodiment of the present invention, the possibility of high temperature, high pressure venting gas or flame pushing out the separator (300) or the separator (300) bending due to internal pressure of the venting gas can be reduced.

[0160] Thus, the arrangement state of the separator (300) can be maintained stably, so that the cell units (U) can be separated more clearly.

[0161]

[0162] FIG. 12 is an enlarged cross-sectional view of a part of a battery module according to one embodiment of the present invention. For example, FIG. 12 is an enlarged view of part B of FIG. 10.

[0163] Insulating covers (240) may be provided in multiple numbers. Insulating covers (240) may be provided for at least some of the multiple cell units (U). For example, insulating covers (240) may be provided for every two cell units (U).

[0164] A spaced-apart space may be provided between adjacent insulating covers (240). At this time, a separator (300) may be interposed between adjacent insulating covers (240). The separator (300) may be configured to penetrate between adjacent insulating covers (240). The separator (300) may be configured to partition or separate the adjacent insulating covers (240). Thus, the cell unit (U) and the busbar frame (500), as well as the insulating covers (240), can be separated by the separator (300).

[0165] According to the above embodiment of the present invention, venting gas or flames emitted from the front and rear sides, such as the electrode lead (110) of the battery cell (100), may be suppressed or prevented from moving beyond the separator (300) toward another cell unit (U). As a result, thermal runaway propagation between battery cells (100) can be more effectively prevented or suppressed.

[0166] For example, as in the embodiment illustrated in FIGS. 1 and FIGS. 12, one end frame (230) may be provided on each side of the battery cell (100). One end frame (230) may be configured to cover one side of a plurality of cell units (U) at once. That is, the end frame (230) may be configured to cover all of the plurality of insulating covers (240).

[0167] At this time, the insulating cover (240) may be provided with a bent portion (242). The bent portion (242) may be configured such that both ends of the insulating cover (240) in the width direction are bent outward (in the X-axis direction). The bent portion (242) may be configured to protrude inwardly from the inner surface of the insulating cover (240).

[0168] Additionally, the end frame (230) may include an insert (231). The insert (231) may be configured to protrude inward from the inner surface of the end frame (230). The insert (231) may be provided between adjacent insulating covers (240). The insert (231) may be interposed between adjacent bending portions (242).

[0169] The separator (300) may be configured to face the inner side of the end frame (230). The separator (300) may be configured to be supported on the inner side of the end frame (230). For example, the separator (300) may be configured to contact the insertion part (231) of the end frame (230).

[0170] Furthermore, although not shown in the drawing, the separator (300) may be configured to be coupled to the inner surface of the end frame (230). For example, the separator (300) and the end frame (230) may be structurally constrained or bolted together.

[0171] According to the above embodiment of the present invention, since the separator (300) can be supported on the inner surface of the end frame (230), the arrangement state of the separator (300) can be stably maintained. As a result, the cell units (U) can be more reliably separated into compartments.

[0172]

[0173] FIG. 13 is an overall perspective view of a battery module according to another embodiment of the present invention. FIG. 14 is a cross-sectional view of a battery module according to another embodiment of the present invention. For example, FIG. 14 may be a drawing showing the cross-sectional view along III-III' of FIG. 13.

[0174] As another example, as in the embodiment illustrated in FIGS. 13 and 14, a plurality of end frames (230) may be provided. The end frames (230) may be divided into multiple parts. Each end frame (230) may be configured to cover at least one cell unit (U) among a plurality of cell units (U).

[0175] Referring to FIGS. 13 and 14, the separator (300) may be configured to partition between adjacent end frames (230). The separator (300) may be configured to penetrate between adjacent end frames (230). Both longitudinal ends of the separator (300) may be interposed between adjacent end frames (230). At this time, the length of the separator (300) may be configured to correspond approximately to the longitudinal length (Y-axis direction) of the housing (200). The end portion of the separator (300) may be configured to be exposed to the outside of the housing (200). Thus, a plurality of cell units (U) may be configured to be divided or partitioned entirely by the separator (300).

[0176] According to the above embodiment of the present invention, the cell units (U) are more clearly separated by partitions, so that thermal runaway propagation between the battery cells (100) and / or cell units (U) can be effectively suppressed and prevented.

[0177] Meanwhile, although not shown in the drawing, a sealing member such as a gasket may be further provided to prevent gas or flame from leaking out through the gap between the end frame (230) and the separator (300). For example, the sealing member may be made of an insulating material such as silicone or rubber. The sealing member may be provided between the end frame (230) and the separator (300). The sealing member may be configured to wrap around the end portion of the separator (300).

[0178]

[0179] FIG. 15 is an enlarged cross-sectional view of a part of a battery module according to another embodiment of the present invention. For example, FIG. 15 is an enlarged view of part C of FIG. 14.

[0180] The separator (300) may be interposed in the space between adjacent end frames (230). Furthermore, the end of the separator (300) may be coupled to the inner surface of the end frame (230). For example, a structure may be formed in which the end of the separator (300) is fitted and coupled to the inner surface of the end frame (230).

[0181] As a more specific example, referring to FIG. 15, the end frame (230) may be provided with a support member (232). The support member (232) may be configured to protrude inward from the inner side of the end frame (230). The support member (232) may be configured to extend long along the height direction of the end frame (230). The support member (232) may be provided at the inner end in the width direction of the end frame (230). The support member (232) may be provided for each of the multiple end frames (230).

[0182] The support member (232) may be configured to support both sides in the thickness direction of the separator (300). The end portion of the separator (300) may be interposed between the support members (232) provided on each end frame (230).

[0183] The separator (300) may be provided with a protrusion (310). The protrusion (310) may be configured such that a portion of both sides in the thickness direction of the separator (300) protrudes outward. The protrusion (310) may be interposed between the support members (232). Furthermore, the protrusion (310) may be configured to be supported by the support members (232). Additionally, the protrusion (310) may be configured to be supported on the inner surface of the end frame (230). Due to the structure of the end frame (230) and the separator (300), the separator (300) may be configured to be constrained in the front-rear and left-right directions.

[0184] According to the above embodiment of the present invention, since the separator (300) can be fitted into the end frame (230), the arrangement state of the separator (300) can be maintained more stably. Furthermore, the separation of the end frame (230), which is divided into multiple parts, from the battery module (10) can be suppressed. As a result, the cell units (U) can be more reliably separated into distinct sections.

[0185]

[0186] FIG. 16 is a diagram showing a disassembled view of a part of a battery module according to another embodiment of the present invention, and FIG. 17 is a cross-sectional view of a battery module according to another embodiment of the present invention.

[0187] Referring to FIGS. 16 and 17, a battery module (10) according to one embodiment of the present invention may further include a protective cover (900). The protective cover (900) may be provided for each cell unit (U). The protective cover (900) may be provided on the outside of the cell unit (U). The protective cover (900) may be configured to cover at least one side of a cell unit (U).

[0188] For example, the protective cover (900) may be configured to cover both sides of the cell unit (U). The protective cover (900) may include a first protective cover (900A) and a second protective cover (900B) provided on each side of the cell unit (U). The protective cover (900) may be configured to be folded toward the cell unit (U) to partially cover the upper surface of the cell unit (U) as well.

[0189] A protective cover (900) may be provided on at least one side of the separator (300). The protective cover (900) may be provided on the inner side of the insulation pad (400). The protective cover (900) may be configured to be in face-to-face contact with the insulation pad (400).

[0190] Furthermore, the protective cover (900) may be configured to prevent venting gas or flames emitted when a thermal event occurs within the cell unit (U) from being transferred to another cell unit (U).

[0191] The protective cover (900) may be made of a material with excellent heat resistance and / or fire resistance, such as a mica sheet or a silicone composite material. Additionally, the protective cover (900) may be made of a material with excellent thermal insulation performance. Accordingly, the protective cover (900) may be minimized from deformation caused by high-temperature gas or flames even when high-temperature heat is generated.

[0192] According to the above embodiment of the present invention, as the protective cover (900) covers the cell unit (U) from multiple directions, the transfer of heat to the outside of the cell unit (U) or the transfer of heat to the cell unit (U) can be effectively suppressed. Thus, according to the above embodiment of the present invention, heat propagation between cell units (U) can be effectively prevented or delayed, thereby ensuring the safety and reliability of the battery module (10).

[0193]

[0194] FIG. 18 is a cross-sectional view showing a disassembled view of a part of a battery module according to one embodiment of the present invention.

[0195] Referring to FIGS. 17 and 18, a battery module (10) according to one embodiment of the present invention may further include a pad member (P). The pad member (P) may be interposed in the space between a housing (200) and a plurality of battery cells (100). The pad member (P) may be configured to seal this space.

[0196] The pad member (P) may include a material capable of blocking heat or flames. For example, the pad member (P) may include a material such as silicone or mica.

[0197] Multiple pad members (P) may be provided. Pad members (P) may be provided for each cell unit (U). The separator (300) may be configured to protrude upward from the pad member (P). Accordingly, the pad member (P) may be partitioned by the separator (300).

[0198] The pad member (P) may include a first pad member (P1) provided on the upper side of the battery cell (100). Additionally, the pad member (P) may include a second pad member (P2) provided on the lower side of the battery cell (100).

[0199] In particular, the first pad member (P1) can be in close contact with the folding portion side of a plurality of battery cells (100). For example, the folding portion of the battery cell (100) can be positioned on the upper side (+Z direction), and the pad member (P) can be positioned on the upper side (+Z direction) of the folding portion in order to be in close contact with the folding portion positioned on the upper side (+Z direction).

[0200] When a thermal event occurs in a cell unit (U) and gas or flames are emitted, only a portion of the pad member (P) corresponding to that portion may be melted by the heat. According to the above embodiment of the present invention, when a pad member (P) is provided, the movement of gas or flames toward other battery cells (100) or cell units (U) can be suppressed more effectively.

[0201] That is, according to the above embodiment of the present invention, the battery cells (100) can be reliably partitioned, so that thermal runaway propagation between the battery cells (100) can be effectively prevented or delayed. Accordingly, the safety and reliability of the battery module (10) can be guaranteed.

[0202]

[0203] Referring to FIG. 18, a battery module (10) according to one embodiment of the present invention may further include a sheet member (S). The sheet member (S) may be configured to cover one side of the housing (200) from the outside and / or the inside. The sheet member (S) may be configured in the form of a sheet that covers the outer surface and / or the inner surface of the housing (200). The sheet member (S) may be composed of a fire-resistant sheet. Alternatively, the sheet member (S) may be applied in a form in which a fire-resistant material and an insulating material are combined.

[0204] The sheet member (S) may be provided on one side of a housing (200) having a plurality of venting holes (VH). For example, the sheet member (S) may be provided on the inner side of the upper surface of the housing (200). Additionally, the sheet member (S) may be provided on the inner side of the first pad member (P1).

[0205] Multiple sheet members (S) may be provided. A sheet member (S) may be provided for each cell unit (U). A separator (300) may be configured to protrude upward from the sheet member (S). Accordingly, the sheet member (S) may be partitioned by the separator (300).

[0206] The sheet member (S) may be configured to cover the venting hole (VH). In this case, the sheet member (S) may be configured in a sheet shape and placed on the first pad member (P1). The sheet member (S) may be configured to cover multiple venting holes (VH) provided in each cell unit (U) at once.

[0207] The sheet member (S) may be configured to suppress the transfer of venting gas or flames, etc., emitted when a thermal event occurs within the battery module (10) to another battery module (10). To this end, the sheet member (S) may be provided with a material having excellent heat resistance and / or fire resistance, such as a mica sheet or a silicon composite material.

[0208] Thus, the sheet member (S) can maintain structural stability without deformation even when high-temperature heat is generated, and thus can stably block high-temperature gas or flames generated in the battery cell (100).

[0209] According to the above embodiment of the present invention, since the sheet member (S) is provided with a material that is hard and heat-resistant, deformation caused by high-temperature gas or flames can be minimized.

[0210] Such a sheet member (S) may be configured to be at least partially openable or closable by venting gas or flame, etc. Specifically, at least a portion of the sheet member (S) may be configured to rupture by the pressure or heat of the venting gas directed toward the venting hole (VH). Alternatively, at least a portion of the sheet member (S) may be configured to be completely separated.

[0211] To this end, the sheet member (S) may be provided with a notching portion (N). The notching portion (N) may be configured to be opened by venting gas to discharge the venting gas to the outside of the battery module (10).

[0212] The notching portion (N) may be provided in multiple numbers and may be arranged at regular intervals from each other in the horizontal direction (X-axis, Y-axis direction). In particular, the notching portion (N) may be formed at a position corresponding to the venting hole (VH). Additionally, the notching portion (N) may be configured with a shape corresponding to the venting hole (VH).

[0213] According to the above embodiment of the present invention, when a thermal event occurs in a specific battery cell (100), a notching portion (N) provided on one side of the specific battery cell (100) may rupture, and at least one of a plurality of venting holes (VH) may be opened. Accordingly, venting gas, etc., may be discharged to the outside of the housing (200) through the opened venting hole (VH).

[0214] Additionally, the sheet member (S) can prevent gas or flames discharged to the outside of the housing (200) from re-entering the battery module (10). That is, the venting hole (VH) provided on the side of the battery cell (100) where no thermal event has occurred can remain closed and not open. As a result, the venting gas or flames discharged to the outside through the open venting hole (VH) can be fundamentally blocked from re-entering the battery module (10). Furthermore, the sheet member (S) in the portion that remains unruptured can block not only heat but also high-temperature gas, flames, discharges, etc. generated from the battery cell (100).

[0215] That is, according to the above embodiment of the present invention, when thermal runaway occurs in the battery module (10), not only can venting gas or flames generated inside the battery module (10) be smoothly discharged to the outside of the battery module (10), but the discharged venting gas or flames can also be prevented from flowing back into the battery module (10). Therefore, thermal runaway propagation can be effectively prevented or delayed by minimizing heat propagation to neighboring cell units (U) or battery modules (10).

[0216]

[0217] FIG. 19 is a schematic perspective view of a battery pack including a battery module according to one embodiment of the present invention.

[0218] Referring to FIG. 19, a battery pack (1) according to one embodiment of the present invention may include one or more battery modules (10) according to one embodiment of the present invention as described above. The battery pack (1) according to the present invention may further include a pack case (2) for accommodating components such as a Battery Management System (BMS) for integrated control of charging and discharging of one or more battery modules, a current sensor, a fuse, etc., as described above.

[0219] In another embodiment, battery cells (100) may be configured to be stacked to form a battery pack (1). In this case, it is also called a cell-to-pack in that the battery cells (100) are directly housed in a pack case (2). In this case, components such as a Battery Management System (BMS), a current sensor, and a fuse may be housed inside the housing (200).

[0220]

[0221] FIG. 20 is a schematic perspective view of a vehicle including a battery pack according to one embodiment of the present invention.

[0222] Referring to FIG. 20, a vehicle (3) according to one embodiment of the present invention may include one or more battery packs (1) or battery modules (10) according to one embodiment of the present invention. The vehicle (3) according to the present invention may be, for example, an electric vehicle, a hybrid vehicle, or a plug-in hybrid vehicle. The vehicle (3) includes four-wheeled vehicles and two-wheeled vehicles. The vehicle (3) operates by receiving power from the battery pack (1) to the battery module (10) according to one embodiment of the present invention.

[0223]

[0224] Although the present invention has been described above 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. Multiple battery cells forming multiple cell units; A housing configured to accommodate the above-mentioned plurality of cell units; and A battery module characterized by including a separator interposed between adjacent cell units.

2. In Paragraph 1, A battery module characterized by further including an insulating pad provided on at least one side of the separator.

3. In Paragraph 1, A battery module characterized by the separator having a hollow structure.

4. In Paragraph 1, A battery module characterized in that the separator is configured to be coupled to the housing.

5. In Paragraph 1, The above housing is A lower frame configured to accommodate the above-mentioned plurality of battery cells, and It includes an upper frame coupled to the lower frame and configured to cover the plurality of battery cells from the top, and A battery module characterized in that the separator is configured to be coupled to at least one of the lower frame and the upper frame.

6. In Paragraph 1, A battery module characterized by further including a busbar frame provided for each of the plurality of cell units and coupled to at least one side of the cell unit.

7. In Paragraph 6, A battery module characterized in that the above-mentioned separator is configured to penetrate between adjacent busbar frames.

8. In Paragraph 6, The above busbar frame is A battery module characterized by having a cell terrace of the battery cell inserted into an inner surface and a space formed to allow expansion of the cell terrace.

9. In Paragraph 6, The above housing is A battery module characterized by further including an insulating cover provided on the outer side of the busbar frame.

10. In Paragraph 9, A battery module characterized in that the separator is configured to be coupled to the inner surface of the insulating cover.

11. In Paragraph 9, A battery module characterized by the above-mentioned separator being interposed between adjacent insulating covers.

12. In Paragraph 1, The above housing is A battery module characterized by including an end frame configured to cover both longitudinal sides of at least one of the plurality of cell units.

13. In Paragraph 12, A battery module characterized in that the separator is configured to face the inner surface of the end frame.

14. In Paragraph 12, The above end frame is divided into multiple parts and provided, A battery module characterized in that the above-mentioned separator is configured to partition between adjacent end frames.

15. In Paragraph 1, A battery module characterized by further including a protective member provided for each of the above cell units and configured to cover both sides of the above cell units.

16. A battery pack comprising a battery module according to any one of paragraphs 1 to 15.

17. An automobile including a battery pack pursuant to paragraph 16.

Images