Battery module, battery pack including said battery module, and automobile

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

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[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 the contents disclosed in the specifications and drawings of the applications are incorporated herein.

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 charged and discharged freely, 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 two types based on the shape of their outer casing: can-type secondary batteries, in which the electrode assembly is housed in a metal can, and pouch-type secondary batteries, in which the electrode assembly is housed in a pouch made of aluminum laminate sheet.

[0007] In recent years, secondary batteries have been widely used not only in small devices such as portable electronic devices, but also in medium- and large-scale devices such as electric vehicles and energy storage systems (ESS), for propulsion and energy storage. Multiple such secondary batteries are electrically connected and housed together inside a module case to form a single battery module.

[0008] However, when multiple secondary batteries (battery cells) or battery modules are densely packed into a small space, they can be vulnerable to thermal events. In particular, if a thermal event occurs in one battery cell, heat, flames, or sparks may be generated. If such heat spreads to other battery cells, an explosive chain reaction such as thermal propagation (TP) can occur, potentially leading to the explosion or fire of the battery module.

[0009] Furthermore, battery cells and other components may experience swelling due to use or abnormal operating conditions (overcharging, over-discharging, exposure to high temperatures, short circuits, etc.). Such swelling can also accelerate thermal runaway.

[0010] Furthermore, in the case of medium to large battery packs, such as those found in electric vehicles, the risk of thermal chain reactions is even greater because they contain numerous battery cells and battery modules to increase output and / or capacity, and because users such as drivers may be present in the vicinity.

[0011] In particular, battery modules are often mounted in the underside of a vehicle. In this case, if high-temperature gases are released upwards, it could cause serious harm to occupants.

[0012] Therefore, there is a need to develop battery modules that can improve safety by delaying heat propagation to other battery cells and modules and suppressing swelling when a thermal event occurs in a specific battery cell or battery module, and that can vent gas in a desired direction, especially in directions other than upwards. [Overview of the project] [Problems that the invention aims to solve]

[0013] The present invention was devised to solve the above-mentioned problems and aims to provide a battery module, a battery pack including the battery module, and an automobile, which can improve safety by delaying heat propagation and suppressing swelling.

[0014] Another objective of the present invention is to provide a battery module that can discharge gas in a desired direction, particularly in directions other than upward.

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

[0016] However, the technical problems that this invention aims to solve are not limited to those described above, and other problems not mentioned will be clearly understood by those skilled in the art from the description of the invention that follows. [Means for solving the problem]

[0017] To solve the above problems, a battery module according to one aspect of the present invention includes a cell stack including a plurality of battery cells stacked in at least one direction, a module case housing the cell stack, a busbar assembly including busbar terminals and a busbar frame configured on which the busbar terminals are mounted, configured to electrically connect the plurality of battery cells, and a cover member extending from one end of the busbar frame toward the cell stack so as to cover at least a portion of the cell stack.

[0018] The cell stack may include at least one thermal barrier located between the multiple battery cells.

[0019] The busbar frame may include a busbar terminal mounting portion on which the busbar terminals are mounted, electrode lead through holes configured for electrode leads to pass through, and a heat barrier housing portion configured to accommodate the heat barrier.

[0020] The cover member may include a first cell cover portion that covers at least a portion 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 of the cell laminate.

[0022] The plurality of battery cells may each include an electrode assembly, a pouch case, and electrode leads.

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

[0024] The sealing portion may include a terrace portion on which electrode leads are provided.

[0025] The first cell cover portion can cover the region of the cell stack that corresponds to the terrace portion.

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

[0027] The pad may be configured to have a shape such that the surface placed on the cell stack corresponds to the surface of the cell stack.

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

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

[0030] In the cell stack, a plurality of battery cells may be horizontally stacked in a standing state.

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

[0032] The module case may have a vent portion disposed at least at one of the lower side, front side, and rear side of the cell stack.

[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 an aspect of the present invention.

[0037] An automobile according to still another aspect of the present invention includes a battery pack according to an 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 stack, upward movement of the gas is suppressed, so that the movement of the gas can be guided in a desired direction and discharged. Therefore, when the battery module is mounted in the lower part of a vehicle, it is possible to prevent high-temperature gas from being discharged upward and causing serious harm to the occupants.

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

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

[0041] Furthermore, according to one aspect of the present invention, when gas or flames are generated in the terrace portion of a battery cell, it is possible to more reliably suppress and prevent the gas or flames from moving to the upper side of the cell stack. Also, when resin or the like is injected into the surface of the cell stack, it is possible to prevent the resin from overflowing into the space between the cell stack and the cover member.

[0042] Furthermore, according to one aspect of the present invention, the module case is stably supported by a thermal 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 the cell laminate and the module case together.

[0043] Furthermore, 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. In addition, the guide portion can more effectively discharge the gases and flames. [Brief explanation of the drawing]

[0044] [Figure 1] This figure shows the external appearance of a battery module according to one embodiment of the present invention. [Figure 2] This is a perspective view of a disassembled battery module according to one embodiment of the present invention. [Figure 3] This diagram shows some of the components included in a battery module according to one embodiment of the present invention. [Figure 4] This diagram shows some of the components included in a battery module according to one embodiment of the present invention. [Figure 5] This figure shows a battery cell included in a battery module according to one embodiment of the present invention. [Figure 6] This diagram shows some of the components included in a battery module according to one embodiment of the present invention. [Figure 7] This diagram shows some of the components included in a battery module according to one embodiment of the present invention. [Figure 8] This diagram shows some of the components included in a battery module according to one embodiment of the present invention. [Figure 9] This figure shows a battery pack according to another embodiment of the present invention. [Figure 10] This figure shows an automobile according to yet another embodiment of the present invention. [Modes for carrying out the invention]

[0045] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. The drawings attached herein illustrate preferred embodiments of the present invention and, together with the detailed description of the invention later, serve to further illustrate the technical concept of the present invention; therefore, the present invention should not be construed as being limited only to what is shown in the drawings. The same reference numerals indicate the same components. In addition, in the drawings, the thickness, ratios and dimensions of components may be exaggerated to effectively illustrate the technical content.

[0046] Terms and words used in this specification and in the claims are not to be interpreted in their ordinary and dictionary sense, but rather in a sense and concept that corresponds to the technical idea of ​​the present invention, in accordance with the principle that the inventor himself may appropriately define the concept of a term in order to best describe the invention.

[0047] In this specification, terms indicating direction such as up, down, left, right, front, and back are used, but these terms are used for convenience of explanation, and it will be obvious to those skilled in the art that they can change depending on the position of the object being examined, the position of the observer, etc.

[0048] Therefore, the embodiments described herein and the configurations shown in the drawings represent only one of the most preferred embodiments of the present invention and do not represent the entire technical concept of the present invention. It should be understood that there are various equivalents and modifications that can be substituted for these at the time of filing.

[0049] Figure 1 shows the external appearance of a battery module according to one embodiment of the present invention, Figure 2 is an exploded perspective view of the battery module according to one embodiment of the present invention, and Figure 3 shows the battery cells included in the battery module according to one embodiment of the present invention.

[0050] Referring to Figures 1 to 3, a battery module 10 according to one embodiment of the present invention includes a cell stack 100, a module case 200, a busbar 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 represent a secondary battery. The secondary battery may comprise an electrode assembly, an electrolyte, and a battery case. In particular, the cell stack 100 may be in a configuration in which a plurality of pouch-type secondary batteries are arranged horizontally in an upright position with their wide surfaces facing each other.

[0052] The battery cell 110 may include an electrode assembly, a pouch case, and electrode leads 113. The pouch case may include a housing portion 111 for housing the electrode assembly, and a sealing portion 112 extending outward for a certain length from the periphery of the housing portion 111. The housing portion 111 corresponds to the approximate middle portion of the pouch case, and the sealing portion 112 may be a portion that is 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 can be sealed by heat-sealing the periphery of the upper case and the periphery of the lower case in contact. The terrace portion T may be a region located in the direction in which the electrode leads 113 are pulled out to the outside of the pouch case.

[0053] Because the terrace portion T has a region where the electrode lead 113 is interposed between the upper and lower cases, its sealing force may be structurally inferior to other regions of the sealing portion 112. An open space may be formed between the terrace portion T and the electrode assembly. Such an open space can function as a gas collection space where gas generated inside the battery cell 110 is collected. Therefore, when gas is generated inside the battery cell 110, the gas is collected in the gas collection space, and venting due to rupture of the sealing portion 112 caused by increased internal pressure may preferentially occur in the terrace portion T.

[0054] The module case 200 may be configured to house the cell stack 100. The module case 200 may be configured to have a housing space capable of housing the cell stack 100. The module case 200 may be in the form of a substantially rectangular prism. The module case 200 may include a case body 210 consisting of four covers that make up each of its faces, and a pair of end covers 220 that cover the front and rear faces of the cell stack 100.

[0055] The busbar assembly 400 may include busbar terminals 410 and a busbar frame 420. The busbar terminals 410 may be coupled to electrode leads 113. The busbar frame 420 may be configured on which the busbar terminals 410 are mounted. The busbar frame 420 may include an electrically insulating material to insulate it from the busbar terminals 410. The busbar frame 420 may include a polymer material such as plastic. If the battery cell 110 is a bidirectional battery cell 110, the busbar assembly 400 may be located at both ends where the electrode leads 113 are provided. If the battery cell 110 is a unidirectional battery cell 110, the busbar assembly 400 may be located at one end where the electrode leads 113 are provided.

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

[0057] With this 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, the upward movement of the gas is suppressed, so the movement of the gas can be guided in a desired direction and discharged. Therefore, when the battery module 10 is mounted in the lower part of a vehicle, it is possible to prevent high-temperature gas from being discharged upward and causing serious harm to the occupants.

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

[0059] At least one thermal barrier 120 may be placed between multiple battery cells 110. The thermal barrier 120 may be placed between two adjacent battery cells 110. The thermal barrier 120 may be configured as a plate. When multiple pouch-type battery cells 110 are stacked in the left-right direction in an upright position, the thermal barrier 120 may be interposed between two adjacent cells in an upright configuration with both sides facing left-right.

[0060] The thermal barrier 120 may be configured to block or delay the propagation of flames and / or heat. The thermal barrier 120 may also 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. This material may include mica, glass fiber reinforced plastic (GFRP), or carbon fiber reinforced plastic (CFRP).

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

[0062] Figures 4 and 5 show some of the components included in a battery module according to one embodiment of the present invention.

[0063] Referring to Figures 4 and 5, the busbar frame 420 may include a busbar terminal mounting section 421, an electrode lead through-hole 422, and a heat barrier housing section 423.

[0064] A busbar terminal 410 can be mounted on the busbar terminal mounting section 421. The busbar terminal mounting section 421 may have a recessed shape to match the shape of the busbar terminal 410 so that the busbar terminal 410 can be mounted on it.

[0065] The electrode lead through-hole 422 may be configured for the electrode lead 113 to pass through. 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 busbar terminal 410.

[0066] A heat barrier 120 can be housed in the heat barrier housing 423. The heat barrier housing 423 may be a hole or groove formed to approximately match the height of the heat barrier 120. The heat barrier housing 423 may be a roughly rectangular hole or groove. The heat barrier 120 may protrude to the outside of the busbar frame 420 by penetrating the hole-shaped heat barrier housing 423. The heat barrier 120 may be fitted into a heat barrier housing 423 formed in the groove shape on the inner surface of the busbar frame 420.

[0067] With this configuration of the present invention, the thermal barrier 120 is housed and stably fixed in the thermal barrier housing 423. Therefore, the thermal barrier 120 can effectively absorb or suppress the pressure generated by the swelling phenomenon of the battery cell 110. Furthermore, with this configuration of the present invention, the thermal barrier 120 covers the entire area of ​​the battery cell 110 in the longitudinal direction (direction parallel to the Y axis), thereby preventing or delaying heat propagation between adjacent battery cells 110.

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

[0069] The first cell cover portion 510 can cover at least a portion of the upper side of the cell stack 100. The first cell cover portion 510 can cover the area of ​​the cell stack 100 corresponding to the terrace portion T.

[0070] Referring further to Figure 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 portion of the side of the cell stack 100. The second cell cover portion 520 may cover the area 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 can be connected to the busbar frame 420. The cover member 500 can be connected to the busbar frame 420 by various types of connections. For example, it can be connected by bolting connections, hook connections, insertion grooves and insertion protrusions. Alternatively, the busbar frame 420 and the cover member 500 may be composed of a single component.

[0073] According to this configuration of the present invention, when 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, thereby guiding the discharge of the gas 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 downwards.

[0074] Figures 6 and 7 show some of the components included in a battery module according to one embodiment of the present invention.

[0075] Referring to Figures 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 that rests 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 distance between the first cell cover portion 510 and the cell stack 100. The lower surface of the pad 600 may be configured to correspond 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] Pad 600 may contain an elastic material. Pad 600 may contain polyurethane (PU) material.

[0078] With this configuration of the present invention, when 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 to the upper side of the cell stack 100. Furthermore, when 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] Figure 8 shows some of the components included in a battery module 10 according to one embodiment of the present invention.

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

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

[0082] With this configuration of the present invention, the module case 200 is stably supported by the thermal barrier 120. Furthermore, by injecting resin into the space between the protrusion 121 formed on the upper part of the battery cell 110 and adjacent protrusions 121, it becomes easier to fix the cell laminate 100 and the module case 200 together. In particular, when the protrusion 121 extends along the longitudinal direction (parallel to the Y-axis) of the battery cell 110 for the same length as the thermal barrier 120, a groove capable of accommodating the protrusion 121 is formed in the pad 600, maximizing the effect of preventing or delaying heat propagation between adjacent battery cells 110.

[0083] Referring further to Figure 8, the module case 200 may include a vent section 201. The busbar frame 420 may include a guide section 424.

[0084] The following describes a case where the cell stack 100 includes a plurality of battery cells 110 stacked horizontally in an upright position, and the cover member 500 covers the upper side of the cell stack 100.

[0085] The vent section 201 may be located at least one of the following locations on the underside, front, and rear of the cell stack 100. The vent section 201 may be located on the front and / or rear of the module case 200 and may be configured to discharge gases and flames released from the electrode lead through-holes 422 and / or heat barrier housings 423 of the busbar frame 420. The vent section 201 may be located on the underside of the module case 200. The vent section 201 may be located adjacent to the terrace section T.

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

[0087] The guide section 424 may be configured to guide gas generated in at least one of the multiple battery cells 110 to the vent section 201. The guide section 424 may be located at the bottom of the busbar frame 420. The guide section 424 may become thinner as it approaches the vent section 201. The guide section 424 may be configured such that the space between the busbar frame 420 and the terrace section T widens as it approaches the vent section 201.

[0088] With this configuration of the present invention, gases and flames generated at the terrace portion T of the battery cell 110 can be discharged to the outside of the battery module 10 through the vent portion 201. Furthermore, the guide portion 424 can discharge the gases and flames more effectively.

[0089] Figure 9 shows a battery pack according to another embodiment of the present invention.

[0090] Referring to Figure 9, the battery pack 2 may include one or more battery modules 10 according to the embodiment of the present invention described above. Furthermore, the battery pack 2 according to the present invention may further include a variety of other components in addition to such battery modules 10, such as a battery management system (BMS), busbars, pack cases, relays, current sensors, and other components of the battery pack 2 known at the time of filing of the present invention.

[0091] Figure 10 shows an automobile according to yet another embodiment of the present invention.

[0092] Referring to Figure 10, the automobile 1 may include one or more of the battery packs 2 according to the present invention described above. Furthermore, the automobile 1 according to the present invention may further include various other components in addition to such battery packs 2. For example, in addition to the battery packs 2 according to the present invention, the automobile 1 according to the present invention may further include a vehicle body, a motor, an electronic control unit (ECU), and other control devices.

[0093] Although the present invention has been described above with reference to the accompanying drawings, focusing on preferred embodiments, it will be clear to those skilled in the art that a variety of obvious modifications are possible without departing from the scope of the invention. Therefore, the scope of the present invention must be interpreted as being in accordance with the claims described to include such a variety of modifications. [Explanation of symbols]

[0094] 1. Automobile 2 Battery Packs 10 Battery Modules 100-cell stack 110 battery cells 111 Detention Unit 112 Sealing section 113 Electrode Leads 120 Heat Barrier 121 Protrusion 200 Module Case 201 Vent section 210 Case Body 220 End Cover 400 Busbar Assembly 410 Busbar Terminals 420 Busbar Frame 421 Busbar terminal mounting section 422 Electrode lead through hole 423 Heat barrier containment section 424 Guide Section 500 Cover component 510 First cell cover section 520 Second cell cover section 600 pads T Terrace Section

Claims

1. (Old claim 1+4+7) A cell stack comprising multiple battery cells stacked in at least one direction, A module case configured to house the aforementioned cell stack, A busbar assembly comprising busbar terminals and a busbar frame configured on which the busbar terminals are mounted, and configured to electrically connect a plurality of the battery cells, A cover member extending from one end of the busbar frame toward the cell stack so as to cover at least a portion of the cell stack, A battery module including, The cover member comprises a first cell cover portion that covers at least a portion of the upper side of the cell stack, The battery module is a battery module having a pad between the first cell cover portion and the cell stack.

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

3. The aforementioned busbar frame is A busbar terminal mounting section on which the busbar terminal is mounted, An electrode lead through-hole configured for the electrode lead to pass through, A heat barrier housing section configured to accommodate the heat barrier, The battery module according to claim 2, comprising:

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

5. Each of the aforementioned battery cells includes an electrode assembly, a pouch case, and electrode leads. The pouch case includes a housing portion for housing the electrode assembly, and a sealing portion that extends outward by a certain length from the periphery of the housing portion. The sealing portion includes a terrace portion on which electrode leads are provided. The battery module according to claim 1, wherein the first cell cover portion covers the region of the cell stack corresponding to the terrace portion.

6. The battery module according to claim 1, wherein the pad is configured such that the surface on which it is placed on the cell stack has a shape corresponding to the surface of the cell stack.

7. The battery module according to claim 1, wherein the pad has a thickness corresponding to the distance between the first cell cover portion and the cell stack.

8. The battery module according to claim 1, wherein the pad comprises an elastic material.

9. The cell stack is formed by stacking a plurality of the battery cells horizontally in an upright position. The cover member covers the upper side of the cell stack, The battery module according to claim 5, wherein the module case is provided with a vent portion located at least one of the following locations: below, in front of, and behind the cell stack, and configured to discharge gas generated in at least one of the plurality of battery cells to the outside.

10. The aforementioned busbar frame is The battery module according to claim 9, further comprising a guide portion configured to guide gas generated in at least one of the plurality of battery cells to the vent portion.

11. The battery module according to claim 9, wherein the vent portion is arranged adjacent to the terrace portion.

12. A battery pack comprising a battery module according to any one of claims 1 to 11.

13. An automobile comprising the battery pack described in claim 12.

Images