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

Abstract

The present invention discloses a battery module with enhanced safety. A battery module according to an embodiment of the present invention includes a cell stack including a plurality of battery cells stacked in at least one direction, a module case configured to accommodate the cell stack, a bus bar terminal, and a bus bar frame configured to mount the bus bar terminal, and a bus bar assembly configured to electrically connect the plurality of battery cells, and a cover member extending from one end portion of the bus bar frame toward the cell stack so as to cover at least a part of the cell stack.

Description

Technical Field

[0001] The present invention relates to a battery module, a battery pack including the battery module, and a vehicle, and more particularly, to a battery module with enhanced safety, a battery pack including the battery module, and a vehicle.

[0002] This application claims priority based on Korean Patent Application No. 10-2022-0167608 filed on December 5, 2022 and Korean Patent Application No. 10-2023-0043199 filed on March 31, 2023, and all of the contents disclosed in the specifications and drawings of the applications are incorporated into this application.

Background Art

[0003] The present invention relates to a battery module, a battery pack including the battery module, and a vehicle, and more particularly, to a battery module with enhanced safety, a battery pack including the battery module, and a vehicle.

[0004] Examples of currently commercialized secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries are attracting attention because they have almost no memory effect compared to nickel-based secondary batteries, so they can be freely charged and discharged, have a very low self-discharge rate, and have a high energy density.

[0005] Such lithium secondary batteries mainly use a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively. A lithium secondary battery includes an electrode assembly in which a positive electrode plate coated with such a positive electrode active material and a negative electrode plate coated with a negative electrode active material are arranged with a separator interposed therebetween, and an exterior material, for example, a battery case, for hermetically storing the electrode assembly together with an electrolytic solution.

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

[0007] In recent years, secondary batteries have been widely used for driving and energy storage not only in small devices such as portable electronic devices but also in medium- and large-sized devices such as electric vehicles and energy storage systems (ESS). A single battery module is configured in such a form that a plurality of such secondary batteries are housed together inside a module case in an electrically connected state.

[0008] However, when a plurality of secondary batteries (battery cells) or a plurality of battery modules are densely packed in a narrow space, they may be vulnerable to thermal events. In particular, when a thermal event occurs in a single battery cell, heat, flames, sparks, etc. may be generated. When such heat spreads to other battery cells, an explosive chain reaction such as thermal propagation (TP) may occur, leading to the explosion or ignition of the battery module.

[0009] In addition, battery cells, etc. may experience a swelling phenomenon due to use or abnormal operating conditions (overcharging, over-discharging, exposure to high temperatures, short circuits, etc.). Moreover, such a swelling phenomenon accelerates the thermal runaway phenomenon.

[0010] Furthermore, in the case of a medium- and large-sized battery pack such as an electric vehicle, a large number of battery cells and battery modules are included to increase the output and / or capacity, and there may be users such as drivers in the vicinity, so the risk of a thermal chain reaction may be even higher.

[0011] In particular, battery modules are often mounted under the vehicle. In this case, if high-temperature gas is discharged upward, it may cause significant damage to the passengers.

[0012] Therefore, when a thermal event occurs in a specific battery cell or battery module, it is required to develop a battery module that can improve safety by delaying heat transfer to other battery cells or battery modules, suppressing swelling, and discharging gas in a desired direction, particularly in other directions except upward.

Summary of the Invention

Problems to be Solved by the Invention

[0013] The present invention is an invention conceived to solve the above-described problems, and an object thereof is to provide a battery module capable of improving safety through delay of heat transfer, suppression of swelling, etc., a battery pack including the battery module, and an automobile.

[0014] Another object of the present invention is to provide a battery module capable of discharging gas in a desired direction, particularly in other directions except upward.

[0015] Another object of the present invention is to provide a battery pack with improved stability and an automobile including the battery pack by including the above-described battery module.

[0016] However, the technical problems to be solved by the present invention are not limited to the above-described problems, and other problems not mentioned will be clearly understood by those skilled in the art from the description of the invention hereinafter.

Means for Solving the Problems

[0017] To solve the above problems, a battery module according to an aspect of the present invention includes a cell stack including a plurality of battery cells stacked in at least one direction, a module case that houses the cell stack, a bus bar terminal, and a bus bar frame configured to support the bus bar terminal, a bus bar assembly configured to electrically connect the plurality of battery cells, and a cover member extending from one end of the bus bar frame in a direction toward the cell stack so as to cover at least a part of the cell stack.

[0018] The cell stack may include at least one heat barrier located between the plurality of battery cells.

[0019] The bus bar frame may include a bus bar terminal mounting portion on which the bus bar terminal is mounted, an electrode lead through hole configured such that an electrode lead penetrates therethrough, and a heat barrier housing portion configured to house the heat barrier.

[0020] The cover member may include a first cell cover portion that covers at least a part of the upper side of the cell stack.

[0021] The cover member may include a second cell cover portion that covers at least a part of the side portion of the cell stack.

[0022] Each of the plurality of battery cells may include an electrode assembly, a pouch case, and an electrode lead.

[0023] The pouch case may include a housing portion that houses the electrode assembly, and a sealing portion that extends outward from the periphery of the housing portion by a certain length.

[0024] The sealing portion may include a terrace portion where an electrode lead is provided.

[0025] The first cell cover portion may cover a region of the cell stack corresponding to the terrace portion.

[0026] The battery module may include a pad between the first cell cover portion and the cell laminate.

[0027] The pad may be configured such that the surface placed on the cell laminate has a shape corresponding to the surface of the cell laminate.

[0028] The pad may have a thickness corresponding to the interval between the first cell cover portion and the cell laminate.

[0029] The pad may include a material having elasticity.

[0030] In the cell laminate, a plurality of battery cells may be horizontally laminated in an upright state.

[0031] The cover member may cover the upper side of the cell laminate.

[0032] A vent portion may be disposed at at least one of the lower side, front side, and rear side of the cell laminate in the module case.

[0033] The vent portion may be configured such that gas generated in at least one of the plurality of battery cells is discharged to the outside.

[0034] The bus bar frame may include a guide portion configured to guide gas generated in at least one of the plurality of battery cells to the vent portion.

[0035] The vent portion may be disposed adjacent to the terrace portion.

[0036] A battery pack according to another aspect of the present invention includes a battery module according to one aspect of the present invention.

[0037] An automobile according to still another aspect of the present invention includes a battery pack according to one aspect of the present invention.

Advantages of the Invention

[0038] According to one aspect of the present invention, when gas is generated in a battery cell, the movement of the gas in the direction in which the cover member is provided is suppressed. In particular, when the cover member covers the upper surface of the cell laminate, the upward movement of the gas is suppressed, so that the movement of the gas can be induced and discharged in a desired direction. Therefore, when the battery module is mounted on the lower part of an automobile, it is possible to prevent high-temperature gas from being discharged upward and causing great damage to passengers.

[0039] Further, according to one aspect of the present invention, it is possible to delay or prevent a thermal chain reaction in which flame and / or heat generated by a thermal event occurring in a specific battery cell moves to other adjacent battery cells. In addition, the heat barrier can absorb or suppress the pressure generated by the swelling phenomenon of the battery cell.

[0040] Further, according to one aspect of the present invention, the heat barrier is housed in the heat barrier housing portion and stably fixed. Therefore, the heat barrier can effectively absorb or suppress the pressure generated by the swelling phenomenon of the battery cell.

[0041] Further, according to one aspect of the present invention, when gas or flame is generated in the terrace portion of the battery cell, it is possible to more reliably suppress and prevent the gas or flame from moving to the upper side of the cell laminate. In addition, when resin or the like is injected onto the surface of the cell laminate, it is possible to prevent the resin from overflowing into the space between the cell laminate and the cover member.

[0042] Further, according to one aspect of the present invention, the module case is stably supported by the heat barrier. In addition, by injecting resin into the space between the protrusion formed on the upper part of the battery cell and the adjacent protrusion, it becomes easier to fix between the cell laminate and the module case.

[0043] Further, according to one aspect of the present invention, gases and flames generated in the terrace portion of the battery cell can be discharged to the outside of the battery module through the vent portion. Further, the guide portion enables more effective discharge of gases and flames.

Brief Description of the Drawings

[0044]

Figure 1

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Figure 4

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Figure 6

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Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0045] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. The drawings attached to this specification illustrate the preferred embodiments of the present invention and serve to further understand the technical idea of the present invention together with the detailed description of the invention to be described later. Therefore, the present invention should not be construed as being limited only to the matters described in the drawings. The same reference numerals indicate the same components. Also, in the drawings, the thickness, ratio, and dimensions of the components may be exaggerated for effectively explaining the technical content.

[0046] In this specification and the claims, the terms and words used are not to be construed as being limited to the ordinary and dictionary meanings. The inventors themselves interpret them in accordance with the meaning and concept corresponding to the technical idea of the present invention in accordance with the principle that they can appropriately define the concept of the terms in order to explain the invention in the best way.

[0047] In this specification, terms indicating directions such as up, down, left, right, front, and back are used, but it is obvious to those skilled in the art that such terms are used for convenience of explanation and can vary depending on the position of the object in question and the position of the observer, etc.

[0048] 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. Thus, there can be various equivalents and modifications that can replace them at the time of this application.

[0049] FIG. 1 is a view showing the appearance of a battery module according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the battery module according to an embodiment of the present invention, and FIG. 3 is a view showing a battery cell included in the battery module according to an embodiment of the present invention.

[0050] Referring to FIGS. 1 to 3, a battery module 10 according to an embodiment of the present invention includes a cell stack 100, a module case 200, a bus bar assembly 400, and a cover member 500.

[0051] The cell stack 100 may include a plurality of battery cells 110 stacked in at least one direction. Here, each battery cell 110 may mean a secondary battery. The secondary battery may include an electrode assembly, an electrolyte, and a battery case. In particular, the cell stack 100 may be in a form in which a plurality of pouch-type secondary batteries are arranged side by side horizontally so that wide surfaces face each other in an upright state.

[0052] The battery cell 110 may include an electrode assembly, a pouch case, and an electrode lead 113. The pouch case may include a housing portion 111 that houses the electrode assembly and a sealing portion 112 that extends outward from the periphery of the housing portion 111 by a certain length. The housing portion 111 corresponds to a substantially middle portion of the pouch case, and the sealing portion 112 may be a portion heat-sealed along the periphery of the housing portion 111 to seal the housing portion 111. The pouch case may include an upper case and a lower case, and the pouch case may be sealed by heat-sealing with the peripheries of the upper case and the lower case in contact with each other. The terrace portion T may be a region located in the direction in which the electrode lead 113 is drawn out to the outside of the pouch case.

[0053] Since there is a region in the terrace portion T where the electrode lead 113 is interposed between the upper case and the lower case, the sealing force may be inferior to other regions of the sealing portion 112 structurally. An empty space may be formed between the terrace portion T and the electrode assembly. Such an empty space can function as a gas collection space for collecting gas generated inside the battery cell 110. Therefore, when gas is generated inside the battery cell 110, the gas is collected in the gas collection space, and venting due to breakage of the sealing portion 112 due to an increase in internal pressure may preferentially occur in the terrace portion T.

[0054] The module case 200 can be configured to accommodate the cell stack 100. The module case 200 can be configured to have an accommodation space capable of accommodating the cell stack 100. The module case 200 can be in the form of a substantially quadrangular prism. The module case 200 can include a case body 210 composed of four covers that constitute each surface, and a pair of end covers 220 that cover the front and rear surfaces of the cell stack 100.

[0055] The bus bar assembly 400 can include a bus bar terminal 410 and a bus bar frame 420. The bus bar terminal 410 can be coupled to the electrode lead 113. The bus bar frame 420 can be configured such that the bus bar terminal 410 is placed thereon. The bus bar frame 420 can include an electrically insulating material so as to be insulated from the bus bar terminal 410. The bus bar frame 420 can include a polymer material such as plastic. The bus bar assembly 400 can be located at both end portions where the electrode lead 113 is provided when the battery cell 110 is a bi-directional battery cell 110. The bus bar assembly 400 can be located at one end portion where the electrode lead 113 is provided when the battery cell 110 is a uni-directional battery cell 110.

[0056] The cover member 500 can extend from one end portion of the bus bar frame 420 in a direction toward the cell stack 100 so as to cover at least a part of the cell stack 100. The cover member 500 can extend in a direction (-Y-axis direction) from the upper end portion of the bus bar frame 420 (the end portion located in the +Z-axis direction) toward the cell stack 100. The cover member 500 can include a mica material or a SUS material. The cover member 500 may be in a form in which an electrically insulating material is coated on the surface of a body made of an electrically conductive material.

[0057] According to such a configuration of the present invention, when gas is generated in the battery cell 110, the movement of the gas in the direction in which the cover member 500 is provided is suppressed. When the cover member 500 covers the upper surface of the cell stack 100, since the upward movement of the gas is suppressed, the movement of the gas can be induced and discharged in a desired direction. Therefore, when the battery module 10 is mounted on the lower part of an automobile, it is possible to prevent high-temperature gas from being discharged upward and causing great damage to passengers.

[0058] Referring further to FIG. 2, the cell stack 100 may include a thermal barrier 120.

[0059] At least one thermal barrier 120 may be disposed between a plurality of battery cells 110. The thermal barrier 120 may be disposed between two adjacent battery cells 110. The thermal barrier 120 may be configured in a plate shape. When a plurality of pouch-type battery cells 110 are stacked in the vertical direction in the left-right direction, the thermal barrier 120 may be interposed between two adjacent cells in a form standing so that both surfaces are positioned in the left-right direction.

[0060] The thermal barrier 120 may be configured to block or delay the propagation of flame and / or heat, etc. Also, the thermal barrier 120 may be configured to absorb or suppress the pressure generated by the swelling phenomenon of the battery cell 110. The thermal barrier 120 may be made of a material resistant to high temperatures. The thermal barrier 120 may include materials such as mica, glass fiber reinforced plastic (GFRP), and carbon fiber reinforced plastic (CFRP).

[0061] According to such a configuration of the present invention, it is possible to delay or prevent a thermal chain reaction in which a flame and / or heat generated by a thermal event occurring in a specific battery cell 110 moves to other adjacent battery cells 110. Further, the heat barrier 120 can absorb or suppress the pressure generated by the swelling phenomenon of the battery cell 110.

[0062] FIGS. 4 and 5 are diagrams showing some components included in a battery module according to an embodiment of the present invention.

[0063] Referring to FIGS. 4 and 5, the bus bar frame 420 may include a bus bar terminal placement portion 421, an electrode lead through hole 422, and a heat barrier housing portion 423.

[0064] A bus bar terminal 410 may be placed on the bus bar terminal placement portion 421. The bus bar terminal placement portion 421 may be in a concave form that matches the shape of the bus bar terminal 410 so that the bus bar terminal 410 can be placed thereon.

[0065] The electrode lead through hole 422 may be configured such that the electrode lead 113 passes therethrough. The electrode lead through hole 422 may be a hole provided at a position substantially corresponding to the electrode lead 113. The electrode lead through hole 422 may have a shape substantially corresponding to the electrode lead 113. The electrode lead through hole 422 may be, for example, a substantially rectangular hole. The electrode lead 113 may pass through the electrode lead through hole 422 and be coupled to the bus bar terminal 410.

[0066] A heat barrier 120 may be housed in the heat barrier housing portion 423. The heat barrier housing portion 423 may be a hole or groove formed substantially in accordance with the height of the heat barrier 120. The heat barrier housing portion 423 may be a substantially rectangular hole or groove. The heat barrier 120 may protrude outside the bus bar frame 420 through the heat barrier housing portion 423 in the form of a hole. The heat barrier 120 may be fitted into the heat barrier housing portion 423 formed in a groove form on the inner surface of the bus bar frame 420.

[0067] According to such a configuration of the present invention, the heat barrier 120 is accommodated in the heat barrier accommodating portion 423 and stably fixed. Therefore, the heat barrier 120 can effectively absorb or suppress the pressure generated by the swelling phenomenon of the battery cell 110. Further, according to such a configuration of the present invention, by covering the entire region in the longitudinal direction (the direction parallel to the Y-axis) of the battery cell 110 with the heat barrier 120, heat propagation between adjacent battery cells 110 can be prevented or delayed.

[0068] Referring further to FIG. 4, the cover member 500 may include a first cell cover portion 510.

[0069] The first cell cover portion 510 may cover at least a part of the upper side of the cell stack 100. The first cell cover portion 510 may cover the region of the cell stack 100 corresponding to the terrace portion T.

[0070] Referring further to FIG. 5, the cover member 500 may include a second cell cover portion 520.

[0071] The second cell cover portion 520 may cover at least a part of the side portion of the cell stack 100. The second cell cover portion 520 may cover the region of the cell stack 100 corresponding to the terrace portion T. The second cell cover portion 520 may be provided on both sides of the cell stack 100.

[0072] The cover member 500 may be connected to the bus bar frame 420. The cover member 500 may be connected to the bus bar frame 420 by various connections. For example, it may be connected by bolting, hooking, an insertion groove and an insertion protrusion, etc. Further, the bus bar frame 420 and the cover member 500 may be formed of one member.

[0073] According to such a configuration of the present invention, when the gas generated inside the battery cell 110 is discharged from the terrace portion T, the movement of the gas is suppressed by the first cell cover portion 510 and / or the second cell cover portion 520, so that the gas can be discharged by being guided in a desired direction. In particular, when both the first cell cover portion 510 and the second cell cover portion 520 are provided, the gas is discharged only downward.

[0074] FIG. 6 and FIG. 7 are diagrams showing some components included in a battery module according to an embodiment of the present invention.

[0075] Referring to FIGS. 6 and 7, the battery module 10 may include a pad 600.

[0076] The pad 600 may be provided between the first cell cover portion 510 and the cell stack 100. The pad 600 may be attached to the surface of the first cell cover portion 510 facing the cell stack 100. The pad 600 may be configured such that the surface placed on the cell stack 100 has a shape corresponding to the surface of the cell stack 100. The pad 600 may have a thickness corresponding to the interval between the first cell cover portion 510 and the cell stack 100. The lower surface of the pad 600 may be configured in a form corresponding to a plurality of irregularities formed on the upper surface of the cell stack 100. The pad 600 may be configured to seal the space between the cell stack 100 and the cover member 500.

[0077] The pad 600 may include an elastic material. The pad 600 may include a polyurethane (PU) material.

[0078] According to such a configuration of the present invention, when the gas or flame generated inside the battery cell 110 is discharged from the terrace portion T, it is possible to more reliably suppress and prevent the gas or flame from moving above the cell stack 100. Further, when a resin or the like is injected onto the surface of the cell stack 100, it is possible to prevent the resin from overflowing into the space between the cell stack 100 and the cover member 500.

[0079] FIG. 8 is a diagram showing some components included in the battery module 10 according to an embodiment of the present invention.

[0080] Referring to FIG. 8, the heat barrier 120 may include a protrusion 121.

[0081] The protrusion 121 may protrude from one end of the heat barrier 120 toward the module case 200. The protrusion 121 may extend from the upper end of the heat barrier 120 to the module case 200. The protrusion 121 may extend along the longitudinal direction of the battery cell 110 (a direction parallel to the Y-axis). The protrusion 121 may extend along the longitudinal direction of the battery cell 110 (a direction parallel to the Y-axis) with the same length as the heat barrier 120.

[0082] According to such a configuration of the present invention, the module case 200 is stably supported by the heat barrier 120. Further, by injecting resin into the space between the protrusion 121 formed on the upper part of the battery cell 110 and the adjacent protrusion 121, it becomes easier to fix between the cell stack 100 and the module case 200. In particular, when the protrusion 121 extends along the longitudinal direction of the battery cell 110 (a direction parallel to the Y-axis) with the same length as the heat barrier 120, a groove capable of accommodating the protrusion 121 is formed in the pad 600, and the effect of preventing or delaying heat transfer between adjacent battery cells 110 can be maximized.

[0083] Referring further to FIG. 8, the module case 200 may include a vent portion 201. The bus bar frame 420 may include a guide portion 424.

[0084] Hereinafter, a case will be described in which the cell stack 100 includes a plurality of battery cells 110 horizontally stacked in an upright state, and the cover member 500 covers the upper side of the cell stack 100.

[0085] The vent part 201 can be arranged at least at one of the lower side, front side, and rear side of the cell stack 100. The vent part 201 can be arranged in front of and / or behind the module case 200, and can be configured to discharge gas and flames discharged from the electrode lead through-holes 422 and / or the heat barrier accommodation part 423 of the bus bar frame 420. The vent part 201 can be arranged at the lower part of the module case 200. The vent part 201 can be arranged adjacent to the terrace part T.

[0086] The vent part 201 can be configured to discharge the gas generated by at least one of the plurality of battery cells 110 to the outside. The vent part 201 can penetrate the module case 200 and can be in a simple hole form. Also, it may not only be in a completely open form, but also be a specific device that is not completely open, is closed in a steady state, and can be opened according to changes in pressure, temperature, etc. The vent part 201 can be, for example, a one-way valve.

[0087] The guide part 424 can be configured to guide the gas generated by at least any one of the plurality of battery cells 110 to the vent part 201. The guide part 424 can be provided at the lower part of the bus bar frame 420. The guide part 424 can become thinner as it is closer to the vent part 201. The guide part 424 can be configured such that the space between the bus bar frame 420 and the terrace part T becomes wider as it is closer to the vent part 201.

[0088] According to such a configuration of the present invention, the gas and flames generated at the terrace part T of the battery cell 110 can be discharged to the outside of the battery module 10 through the vent part 201. Also, the gas and flames can be discharged more effectively by the guide part 424.

[0089] FIG. 9 is a diagram showing a battery pack according to another embodiment of the present invention.

[0090] Referring to FIG. 9, the battery pack 2 may include one or more battery modules 10 according to an embodiment of the present invention described above. Further, the battery pack 2 according to the present invention may further include various other components outside such battery modules 10, for example, various components known at the time of filing of the present invention such as a battery management system (BMS), a bus bar, a pack case, a relay, a current sensor, etc.

[0091] FIG. 10 is a diagram showing an automobile according to still another embodiment of the present invention.

[0092] Referring to FIG. 10, the automobile 1 may include one or more battery packs 2 according to the present invention described above. Further, the automobile 1 according to the present invention may further include various other components included in the automobile 1 outside such battery packs 2. For example, the automobile 1 according to the present invention may further include, in addition to the battery pack 2 according to the present invention, a vehicle body, a motor, a control device such as an electronic control unit (ECU), etc.

[0093] As described above, the present invention has been described mainly with reference to the preferred embodiments with reference to the accompanying drawings. However, it is obvious to those skilled in the art that various and obvious modifications can be made without departing from the scope of the present invention from such description. Therefore, the scope of the present invention should be interpreted by the claims described to include such various modifications.

Explanation of Reference Numerals

[0094] 1 Automobile 2 Battery pack 10 Battery module 100 Cell stack 110 Battery cell 111 Accommodating portion 112 Sealing portion 113 Electrode lead 120 Heat barrier 121 Protrusion 200 Module Case 201 Vent Port 210 Case Body 220 End Cover 400 Busbar Assembly 410 Busbar Terminal 420 Busbar Frame 421 Busbar Terminal Mounting Port 422 Electrode Lead Through-Hole 423 Heat Barrier Accommodation Port 424 Guide Port 500 Cover Member 510 First Cell Cover Port 520 Second Cell Cover Port 600 Pad T Terrace

Claims

1. A cell stack including a plurality of battery cells laminated in at least one direction, A module case configured to accommodate the cell stack, A bus bar assembly including a bus bar terminal and a bus bar frame configured to mount the bus bar terminal, and configured to electrically connect the plurality of battery cells, A cover member extending in a direction from one end of the bus bar frame toward the cell stack so as to cover at least a part of the cell stack, A battery module including the above.

2. The battery module according to claim 1, wherein the cell stack includes at least one heat barrier between the plurality of battery cells.

3. The bus bar frame A bus bar terminal mounting portion on which the bus bar terminal is mounted, An electrode lead through hole configured such that an electrode lead penetrates therethrough, A heat barrier accommodating portion configured to accommodate the heat barrier, The battery module according to claim 2, comprising the above.

4. The battery module according to claim 1, wherein the cover member includes a first cell cover portion that covers at least a part of the upper side of the cell stack.

5. The battery module according to claim 1, wherein the cover member includes a second cell cover portion that covers at least a part of the side portion of the cell stack.

6. Each of the plurality of battery cells includes an electrode assembly, a pouch case, and an electrode lead, The pouch case includes a housing portion that houses the electrode assembly and a sealing portion that extends outward from the periphery of the housing portion by a certain length, The sealing portion includes a terrace portion where an electrode lead is provided, The battery module according to claim 4, wherein the first cell cover portion covers a region of the cell stack corresponding to the terrace portion.

7. The battery module according to claim 4, further comprising a pad between the first cell cover portion and the cell stack.

8. The battery module according to claim 7, wherein the surface of the pad placed on the cell stack has a shape corresponding to the surface of the cell stack.

9. The battery module according to claim 7, wherein the pad has a thickness corresponding to the interval between the first cell cover portion and the cell stack.

10. The battery module according to claim 7, wherein the pad includes a material having elasticity.

11. In the cell stack, a plurality of the battery cells are stacked horizontally in an upright state, the cover member covers the upper side of the cell stack, the module case is disposed at at least one of the lower side, front side, and rear side of the cell stack, and includes a vent portion configured to discharge gas generated by at least any one of the plurality of battery cells to the outside. The battery module according to claim 6.

12. The bus bar frame The battery module according to claim 11, further comprising a guide portion configured to guide gas generated by at least any one of the plurality of battery cells to the vent portion.

13. The battery module according to claim 11, wherein the vent portion is disposed adjacent to the terrace portion.

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

15. An automobile including the battery pack according to claim 14.

Images