Battery module, battery pack and vehicle including such a battery module, and method for manufacturing such a battery module

Abstract

A battery module according to an embodiment of the present invention is characterized in that it includes a battery cell assembly including a plurality of battery cells, and a housing sheet that receives the battery cell assembly, so as to realize a slimmer and more compact structure and improve the efficiency of the assembly process.

Description

[Technical field]

[0001] The present invention relates to a battery module, a battery pack and a vehicle including such a battery module, and a method for manufacturing such a battery module.

[0002] This application claims priority to Korean Patent Application No. 10-2021-0074431 filed on June 8, 2021, and Korean Patent Application No. 10-2021-0074432 filed on June 8, 2021, and the entire contents disclosed in the specification and drawings of said application are incorporated herein by reference. [Background technology]

[0003] Secondary batteries, which have high applicability to various products and electrical properties such as high energy density, are widely used not only in portable devices but also in electric vehicles (EVs) and hybrid electric vehicles (HEVs) that are driven by electric drive sources. These secondary batteries have the primary advantage of dramatically reducing the use of fossil fuels, as well as the advantage of not producing any by-products associated with energy use, and are therefore attracting attention as a new energy source that is environmentally friendly and improves energy efficiency.

[0004] Currently, types of secondary batteries that are widely used include lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel metal hydride batteries, and nickel zinc batteries. The operating voltage of such a unit secondary battery cell, i.e., a unit battery cell, is about 2.5V to 4.5V. Therefore, when a higher output voltage is required, a battery pack may be configured by connecting a plurality of battery cells in series. Also, a battery pack may be configured by connecting a plurality of battery cells in parallel depending on the charge / discharge capacity required for the battery pack. Therefore, the number of battery cells included in the battery pack may be variously set depending on the required output voltage or charge / discharge capacity.

[0005] In addition, when configuring a battery pack by connecting a plurality of battery cells in series / parallel, a common method is to first configure a battery module including at least one battery cell, and then use this at least one battery module to add other components to configure the battery pack.

[0006] A conventional battery module generally includes a battery cell assembly including a plurality of battery cells, a base housing supporting a bottom of the battery cell assembly, a side housing coupled to a base plate and supporting both sides of the battery cell assembly, and a cover housing coupled to the side housing and covering an upper portion of the battery cell assembly. Here, the battery cell assembly includes a plurality of cooling fins accommodating at least two battery cells for cooling the plurality of battery cells. Conventionally, the plurality of cooling fins are U-shaped and are arranged in contact with and accommodate at least two battery cells therein.

[0007] However, in the case of a battery module, when accommodating at least two such battery cells inside a cooling fin, a worker must first spread both ends of the cooling fin to accommodate the battery cells, and then accommodate the battery cells inside the cooling fin.

[0008] As a result, in the case of a conventional battery module, the work process for accommodating the battery cells inside the cooling fins takes a considerable amount of time, resulting in a problem of reduced efficiency in the assembly process.

[0009] Furthermore, in the case of a conventional battery module, a plurality of housing members are required to accommodate the battery cell assemblies, and an additional process is required for the bonding process between these housing members. In addition, the size of the entire battery module increases due to the plurality of housing members, resulting in a problem of a decrease in the energy density of the entire battery module.

[0010] For this reason, it is desirable to find a solution for providing a battery module that can achieve a slimmer and more compact structure while improving the efficiency of the assembly process, a battery pack and an automobile including such a battery module, and a method for manufacturing such a battery module. Summary of the Invention [Problem to be solved by the invention]

[0011] Therefore, an object of the present invention is to provide a battery module that can achieve a slimmer and more compact structure, a battery pack and a vehicle including such a battery module, and a method for manufacturing such a battery module.

[0012] Furthermore, another object of the present invention is to provide a battery module capable of improving the efficiency of an assembly process, a battery pack and a vehicle including such a battery module, and a method for manufacturing such a battery module. [Means for solving the problem]

[0013] In order to achieve the above object, the present invention provides a battery module, comprising: a battery cell assembly including a plurality of battery cells; and a housing sheet that houses the battery cell assembly.

[0014] Preferably, the housing sheet may integrally encase a bottom of the battery cell assembly, both sides of the battery cell assembly, and a top of the battery cell assembly.

[0015] Preferably, the battery cell assembly may include a plurality of cooling fin units disposed within the housing sheet and housing two battery cells among the plurality of battery cells.

[0016] Preferably, each of the plurality of cooling fin units may include a first cooling fin supporting one of the two battery cells, a second cooling fin spaced apart from the first cooling fin supporting the other of the two battery cells, and a thermal interface material connecting the second cooling fin and the first cooling fin and provided at the bottom of the two battery cells.

[0017] Preferably, the first cooling fin may include a first fin body supporting a side surface of the one of the battery cells, and a first fin base bent from the first fin body and positioned at a bottom portion of the one of the battery cells.

[0018] Preferably, the second cooling fin may include a second fin body supporting a side surface of the other battery cell, and a second fin base bent from the second fin body and positioned at a bottom of the other battery cell.

[0019] Preferably, the first fin base and the second fin base may be disposed at a predetermined distance from each other.

[0020] Preferably, the thermal interface material connects the first fin base and the second fin base and may be provided on an upper side of the first fin base and the second fin base.

[0021] Preferably, the housing sheet may be provided with an insulating sheet having a predetermined length.

[0022] Preferably, the housing sheet may enclose one side of the battery cell assembly, a bottom of the battery cell assembly, the other side of the battery cell assembly, and an upper side of the battery cell assembly, and may be positioned to at least partially overlap one side of the battery cell assembly.

[0023] Preferably, one end and the other end of the housing sheet may be disposed to overlap on one side of the battery cell assembly.

[0024] The present invention also provides a battery pack, comprising: at least one battery module according to any one of the above-described embodiments; and a pack case accommodating the at least one battery module.

[0025] Preferably, the battery pack may include an adhesive member provided between the at least one battery module and the pack case for fixing the at least one battery module to the pack case.

[0026] The present invention also provides a motor vehicle, characterized in that it comprises at least one battery pack according to the above-described embodiments.

[0027] The present invention also provides a method for manufacturing a battery module, comprising the steps of: placing a housing sheet of a predetermined length on a conveyor belt that guides transportation in a predetermined direction; mounting a plurality of cooling fin units, each of which includes a pair of first and second cooling fins for supporting both sides of a battery cell, on the housing sheet of the predetermined length; injecting a thermal interface material between the first and second cooling fins to connect the first and second cooling fins; passing the housing sheet over a raised portion roller that forms a curved portion of a predetermined height; inserting at least one battery cell between the first and second cooling fins when the distance between the first and second cooling fins is increased as the housing sheet passes over the raised portion roller; and wrapping the at least one battery cell and the plurality of cooling fin units in the housing sheet so that they can be covered when the housing sheet passes over the raised portion roller. Effect of the Invention

[0028] According to the above-described various embodiments, it is possible to provide a battery module capable of realizing a slimmer and more compact structure, a battery pack and a vehicle including such a battery module, and a method for manufacturing such a battery module.

[0029] Furthermore, according to the above various embodiments, it is possible to provide a battery module capable of improving the efficiency of an assembly process, a battery pack and a vehicle including such a battery module, and a method for manufacturing such a battery module.

[0030] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention, serve to further understand the technical ideas of the present invention. Therefore, the present invention should not be interpreted as being limited only to the matters described in the drawings. [Brief description of the drawings]

[0031] [Figure 1] 1 is a diagram illustrating a battery module according to an embodiment of the present invention; [Diagram 2] 2 is a diagram for explaining a battery cell assembly of the battery module of FIG. 1. [Diagram 3] 3 is a diagram for explaining a cooling fin unit of the battery cell assembly of FIG. 2. FIG. [Figure 4] 2A to 2C are diagrams for explaining an assembly process of the battery module of FIG. 1. [Diagram 5] 2A to 2C are diagrams for explaining an assembly process of the battery module of FIG. 1. [Figure 6] 2A to 2C are diagrams for explaining an assembly process of the battery module of FIG. 1. [Figure 7] 2A to 2C are diagrams for explaining an assembly process of the battery module of FIG. 1. [Figure 8] 1 is a diagram illustrating a battery pack according to an embodiment of the present invention; [Figure 9] 11 is a diagram illustrating a battery module according to another embodiment of the present invention. [Figure 10] 10 is a diagram for explaining a battery cell assembly of the battery module of FIG. 9. [Figure 11] 11 is a diagram for explaining a cooling fin unit of the battery cell assembly of FIG. 10. FIG. [Figure 12] 10 is a diagram for explaining an assembly process of the battery module of FIG. 9. [Figure 13] 10 is a diagram for explaining an assembly process of the battery module of FIG. 9. [Figure 14]10 is a diagram for explaining an assembly process of the battery module of FIG. 9. [Figure 15] 10 is a diagram for explaining an assembly process of the battery module of FIG. 9. [Figure 16] 11 is a diagram illustrating a battery pack according to another embodiment of the present invention. FIG. [Figure 17] 1 is a diagram for explaining an automobile according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] The present invention will become more clear by describing in detail preferred embodiments of the present invention with reference to the attached drawings. The embodiments described herein are illustrative in order to aid in the understanding of the invention, and it should be understood that the present invention can be implemented in various forms different from the embodiments described herein. In addition, in order to aid in the understanding of the invention, the attached drawings may be drawn not to scale, and the dimensions of some components may be exaggerated.

[0033] FIG. 1 is a diagram for explaining a battery module according to one embodiment of the present invention, FIG. 2 is a diagram for explaining a battery cell assembly of the battery module of FIG. 1, and FIG. 3 is a diagram for explaining a cooling fin unit of the battery cell assembly of FIG. 2.

[0034] 1 to 3, a battery module 10 may include a battery cell assembly 100 and a housing sheet 200.

[0035] The battery cell assembly 100 may include a plurality of battery cells 110 .

[0036] The battery cells 110 may be stacked so as to be electrically connected to each other. The battery cells 110 may be a pouch-type secondary battery, a cylindrical secondary battery, or a prismatic secondary battery, which may be a secondary battery. Hereinafter, the present embodiment will be described only in the case where the battery cells 110 are a pouch-type secondary battery.

[0037] The battery cell assembly 100 may include a plurality of cooling fin units 150.

[0038] The plurality of cooling fin units 150 are installed in a housing sheet 200 (to be described later) and can accommodate two of the plurality of battery cells 110 .

[0039] Each of the plurality of cooling fin units 150 may include a first cooling fin 160 , a second cooling fin 170 , and a thermal interface material 180 .

[0040] The first cooling fin 160 is for cooling the battery cell 110 and guiding support of the battery cell 110, and may support one of the two battery cells 110. The first cooling fin 160 may be made of an aluminum material.

[0041] The first cooling fin 160 may include a first fin body 162 and a first fin base 166 .

[0042] The first fin body 162 may be formed to have a predetermined length and may support a side surface of one of the battery cells 110. The first fin body 162 may be in surface contact with a side surface of the one of the battery cells 110 to enhance cooling efficiency.

[0043] The first fin base 166 may be bent from the first fin body 162 and disposed at a bottom of one of the battery cells 110. The first fin base 166 may be disposed at a predetermined distance from a second fin base 176, which will be described later. The first fin base 166 may at least partially support a bottom of the one of the battery cells 110.

[0044] The second cooling fin 170, which cools the battery cell 110 and guides the support of the battery cell 110, is spaced apart from the first cooling fin 160 and may support the other battery cell 110 of the two battery cells 110. The second cooling fin 170 may be made of an aluminum material.

[0045] The second cooling fin 170 may include a second fin body 172 and a second fin base 176 .

[0046] The second fin body 172 may be formed to have a predetermined length and may support a side surface of the other battery cell 110. The second fin body 172 may be in surface contact with a side surface of the other battery cell 110 to enhance cooling efficiency.

[0047] The second fin base 176 may be bent from the second fin body 172 and disposed on a bottom of the other battery cell 110. The second fin base 176 may at least partially support the bottom of the other battery cell 110.

[0048] The thermal interface material 180 may connect the second cooling fin 170 and the first cooling fin 160 and be provided at the bottom of the two battery cells 110. Specifically, the thermal interface material 180 may connect the first fin base 166 and the second fin base 176 and be provided on the upper sides of the first fin base 166 and the second fin base 176.

[0049] Such a thermal interface material 180 may be comprised of a thermally conductive adhesive. Additionally, the thermal interface material 180 may be comprised of a potting resin.

[0050] The housing sheet 200 may house the battery cell assembly 100 .

[0051] Specifically, the housing sheet 200 may receive the battery cell assembly 100 and integrally enclose a bottom of the battery cell assembly 100 , both sides of the battery cell assembly 100 , and an upper part of the battery cell assembly 100 .

[0052] More specifically, the housing sheet 200 may enclose one side of the battery cell assembly 100, a bottom of the battery cell assembly 100, the other side of the battery cell assembly 100, and an upper side of the battery cell assembly 100, and may be disposed to at least partially overlap one side of the battery cell assembly 100. With such an overlapping arrangement, one end and the other end of the housing sheet 200 may be disposed to overlap one side of the battery cell assembly.

[0053] The housing sheet 200 may be an insulating sheet having a predetermined length. Specifically, the housing sheet 200 may be an insulating sheet including a high tensile and high adhesive material. For example, the housing sheet 200 may be a general tape type, plastic, or an insulating coated metal sheet.

[0054] Since the housing sheet 200 is prepared as a single member and integrally encloses the battery cell assembly 100, the number of components for configuring the module housing can be reduced compared to the conventional art, and the entire battery module 10 can be slimmed down.

[0055] Therefore, in the present embodiment, the housing sheet 200 can reduce the manufacturing cost of the battery module 10 and significantly increase the energy density of the battery module 10.

[0056] Hereinafter, the assembly process of the battery module 10 according to the present embodiment will be described in more detail.

[0057] 4 to 7 are diagrams for explaining the assembly process of the battery module of FIG.

[0058] Hereinafter, a method for manufacturing a battery module according to the present embodiment will be described with reference to FIGS.

[0059] The method for manufacturing the battery module according to the present embodiment may include the following steps in sequence.

[0060] First, the manufacturing method of the battery module may include a step of placing a predetermined length of the housing sheet 200 on a conveyor belt C that guides transportation in a predetermined direction.

[0061] The manufacturing method of the battery module may include a step of mounting a plurality of cooling fin units 150, each consisting of a pair of first and second cooling fins 160 and 170, for supporting both sides of the battery cells 110 on the housing sheet 200 of the predetermined length.

[0062] In addition, the manufacturing method of the battery module may include a step of inserting a thermal interface material 180 between the first cooling fin 160 and the second cooling fin 170 to connect the first cooling fin 160 and the second cooling fin 170.

[0063] The method for manufacturing the battery module may also include a step of passing the housing sheet 200 over a ridge roller R that forms a curved surface portion of a predetermined height.

[0064] The method for manufacturing the battery module may include a step of inserting at least one battery cell 110 between the first cooling fin 160 and the second cooling fin 170 when the housing sheet 200 passes over the upper side of the ridge roller R and the distance between the first cooling fin 160 and the second cooling fin 170 is increased due to the passage of the housing sheet 200 over the ridge roller R.

[0065] In addition, the manufacturing method of the battery module may include a step of wrapping the housing sheet 200 so that the at least one battery cell 110 and the plurality of cooling fin units 150 are covered when the housing sheet 200 passes through the raised portion roller R.

[0066] Here, in the case of this embodiment, the space between the first cooling fin 160 and the second cooling fin 170 naturally widens and then narrows as the raised portion roller R of the housing sheet 200 passes, which may make it significantly easier to insert the battery cell 110 into the cooling fin unit 150.

[0067] In addition, in this embodiment, when the insertion of the battery cell 110 is completed, the housing sheet 200 may sequentially wrap the at least one battery cell 110 and the plurality of cooling fin units 150 along at least one direction to package the battery cell assembly 100.

[0068] In this manner, in this embodiment, the raised portion roller R makes it easier and simpler to insert the battery cells 110 into the cooling fin unit 150, thereby significantly improving the efficiency of the assembly process of the battery module 10.

[0069] In addition, in this embodiment, the housing sheet 200 that encases the battery cell assembly 100 can simplify the configuration of the module housing of the battery module 10, thereby making it possible to slim down the entire battery module 10 and significantly increasing the energy density of the battery module 10.

[0070] Meanwhile, after being covered with the housing sheet 200, the battery module may be subjected to a post-process for manufacturing the battery module.

[0071] FIG. 8 is a diagram illustrating a battery pack according to an embodiment of the present invention.

[0072] Referring to FIG. 8, a battery pack 1 may include at least one battery module 10 according to the above-described embodiment, and a pack case 50 packaging the at least one battery module 10.

[0073] The battery pack 1 may further include an adhesive member 70.

[0074] The adhesive member 70 is provided to more stably guide the battery module 10 and is arranged between the at least one battery module 10 and the pack case 50, thereby fixing the at least one battery module 10 to the pack case 50.

[0075] In the battery pack 1 according to the present embodiment, the battery modules 10 are fixed between the pack cases 50 by the adhesive members 70, so that no separate fastening structure or bolt members are required for fastening.

[0076] Therefore, according to this embodiment, the storage structure of the battery module 10, the appearance of which is formed by the housing sheet 200 (see FIG. 1), can be realized more compactly, and a battery pack 1 that is slimmer and has high energy efficiency can be provided.

[0077] FIG. 9 is a diagram for explaining a battery module according to another embodiment of the present invention, FIG. 10 is a diagram for explaining a battery cell assembly of the battery module of FIG. 9, and FIG. 11 is a diagram for explaining a cooling fin unit of the battery cell assembly of FIG. 10.

[0078] Since the battery module 20 according to the present embodiment is similar to the battery module 10 according to the above-described embodiment, redundant descriptions of configurations that are substantially the same or similar to those of the above-described embodiment will be omitted, and the following description will focus on the differences from the above-described embodiment.

[0079] 9 to 11, the battery module 20 may include a battery cell assembly 300 and a housing sheet 400.

[0080] The battery cell assembly 300 may include a plurality of battery cells 310. The plurality of battery cells 310 are substantially the same as those in the above-described embodiment, and therefore, a duplicated description will be omitted below.

[0081] The battery cell assembly 300 may include a plurality of cooling fin units 350.

[0082] The plurality of cooling fin units 350 are for cooling and supporting the battery cells 310, and are installed within the housing sheet 400, and can integrally support two battery cells 310 among the plurality of battery cells 310.

[0083] Each of such cooling fin units 350 may include integral cooling fins 360 and thermal interface material 380 .

[0084] The integrated cooling fin 360 may be made of an aluminum material and may integrally support the two battery cells 110. The integrated cooling fin 360 may include a fin base 362 and a fin body 365.

[0085] The fin base 362 may support bottom portions of the two battery cells 310. To this end, the fin base 362 may have an area capable of supporting the bottom portions of the two battery cells 310.

[0086] The fin body 365 may be provided on the fin base 362 and disposed between the two battery cells 310. The fin body 365 may be in surface contact with each of the two battery cells 310 to enhance cooling efficiency.

[0087] The thermal interface material 380 may be provided on a bottom of the integrated cooling fins 360. Specifically, the thermal interface material 380 may be provided on a fin base 362 of the integrated cooling fins 360.

[0088] The housing sheet 400 may house the battery cell assembly 300 as in the above-described embodiment, and may integrally enclose the bottom of the battery cell assembly 300, both sides of the battery cell assembly 300, and the top of the battery cell assembly 300.

[0089] Hereinafter, the assembly process of the battery module 20 according to the present embodiment will be described in more detail.

[0090] 12 to 15 are diagrams for explaining the assembly process of the battery module of FIG.

[0091] 12 to 15, the manufacturing method of the battery module according to the present embodiment may include a step of placing a predetermined length of the housing sheet 400 on a conveyor belt C that guides the transportation in a predetermined direction.

[0092] The manufacturing method of the battery module may also include a step of mounting a plurality of integrated cooling fins 360, including a fin base 362 supporting the bottoms of the two battery cells 310, and a fin body 365 provided on the fin base 362 and between the two battery cells 310, on the housing sheet 400 of the predetermined length.

[0093] The method for manufacturing the battery module may also include the step of applying a thermal interface material 380 onto the fin base 362.

[0094] In addition, the method of manufacturing the battery module may include a step of passing the housing sheet 400 over a ridge roller R that forms a curved surface portion of a predetermined height.

[0095] In addition, the manufacturing method of the battery module may include a step of mounting the two battery cells 310 to the fin base 362 by sandwiching the fin body 365 when each fin body 365 is tilted by the passage of the ridge roller R of the housing sheet 400.

[0096] In addition, the manufacturing method of the battery module may include a step of wrapping the housing sheet 400 so that the housing sheet 400 covers the plurality of battery cells 310 and the plurality of integrated cooling fins 360 when the housing sheet 400 passes through the ridge roller R.

[0097] Here, in the case of this embodiment, each fin body 365 is naturally tilted at a predetermined angle (θ) as the ridge roller R of the housing sheet 400 passes, so that the attachment of the battery cell 310 to the integrated cooling fin 360 may be significantly facilitated.

[0098] In addition, in this embodiment, when the insertion of the battery cell 310 is completed, the housing sheet 400 may sequentially enclose the at least one battery cell 310 and the plurality of cooling fin units 350 along at least one direction to package the battery cell assembly 300.

[0099] In this manner, in the present embodiment, the raised portion roller R makes it easier and simpler to install the battery cells 310 in the cooling fin unit 350, thereby significantly improving the efficiency of the assembly process of the battery module 20.

[0100] The above-mentioned steps for manufacturing the battery module according to the present embodiment may be performed sequentially. Meanwhile, the battery module may also be subjected to a post-process for manufacturing the battery module after being covered with the housing sheet 400.

[0101] FIG. 16 is a diagram illustrating a battery pack according to another embodiment of the present invention.

[0102] Referring to FIG. 16 , a battery pack 2 may include at least one battery module 20 according to the above-described embodiments, and a pack case 60 packaging the at least one battery module 20 .

[0103] The battery pack 2 may further include an adhesive member 80 as in the above-described embodiments.

[0104] Therefore, as in this embodiment and the above-described embodiments, the storage structure of the battery module 10, the appearance of which is formed by the housing sheet 400 (see FIG. 9), can be realized more compactly, and a battery pack 2 can be provided that is slimmer and has high energy efficiency.

[0105] FIG. 17 is a diagram for explaining an automobile according to an embodiment of the present invention.

[0106] 17, the battery packs 1 and 2 may be provided in an automobile V as a fuel source for the automobile. For example, the battery packs 1 and 2 may be provided in an electric vehicle, a hybrid electric vehicle, or other types of automobile V that can use the battery packs 1 and 2 as a fuel source.

[0107] Further, it goes without saying that the battery packs 1 and 2 may be provided in other devices, equipment, and facilities such as an energy storage system that uses a secondary battery, in addition to the automobile V.

[0108] As described above, the battery packs 1, 2 according to the present embodiment, and devices, instruments, and equipment equipped with the battery pack 1, such as the automobile, include the battery modules 10, 20 described above, and therefore it is possible to realize battery packs 1, 2 having all the advantages of the battery modules 10, 20, and devices, instruments, and equipment, such as the automobile V equipped with such battery packs 1, 2.

[0109] According to the various embodiments described above, it is possible to provide a battery module 10, 20 that can realize a slimmer and more compact structure, a battery pack 1, 2 and an automobile V including such a battery module 10, 20, and a manufacturing method of such a battery module 10, 20.

[0110] In addition, the various embodiments described above can provide battery modules 10, 20 that can improve the efficiency of the assembly process, battery packs 1, 2 and automobiles V including such battery modules 10, 20, and methods for manufacturing such battery modules 10, 20.

[0111] Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and it goes without saying that various modifications can be made by a person having ordinary knowledge in the technical field to which the invention pertains, without departing from the gist of the present invention as claimed in the claims, and such modifications should not be understood individually from the technical ideas and perspectives of the present invention. [Explanation of symbols]

[0112] 1, 2 Battery pack 10 Battery Module 17 Second cooling fin 20 Battery Module 50, 60 pack cases 70, 80 Adhesive material 100 Battery Cell Assembly 110 Battery Cell 150 Cooling fin unit 160 First cooling fin 162 1st fin body 166 1st Fin Base 170 Second cooling fin 172 2nd fin body 176 2nd Fin Base 180 Thermal Interface Materials 200 Housing Sheet 300 Battery Cell Assembly 310 Battery Cell 350 Cooling fin unit 360 Integrated Cooling Fins 362 Fin Base 365 Finn Body 380 Thermal Interface Material 400 Housing Sheet C Conveyor belt R Raised Roller V Automobile θ angle

Claims

1. In the battery module, a battery cell assembly including a plurality of battery cells; a housing sheet that houses the battery cell assembly; The battery cell assembly includes: A battery module including a plurality of cooling fin units provided within the housing sheet and housing two battery cells among the plurality of battery cells.

2. The housing sheet is The battery module of claim 1 , further comprising a bottom of the battery cell assembly, two sides of the battery cell assembly, and a top of the battery cell assembly.

3. Each of the plurality of cooling fin units is A first cooling fin supporting one of the two battery cells; a second cooling fin spaced apart from the first cooling fin and supporting the other of the two battery cells; 2. The battery module according to claim 1, further comprising: a thermal interface material that connects the second cooling fin and the first cooling fin and is provided at the bottom of the two battery cells.

4. The first cooling fin is a first fin body supporting a side surface of the one of the battery cells; 4. The battery module according to claim 3, further comprising: a first fin base bent from the first fin body and disposed on a bottom of the other battery cell.

5. The second cooling fin is A second fin body that supports a side surface of the other battery cell; 5. The battery module according to claim 4, further comprising: a second fin base bent from the second fin body and disposed on a bottom of the other battery cell.

6. The first fin base and the second fin base are 6. The battery modules of claim 5, wherein the battery modules are spaced apart from each other at a predetermined distance.

7. The thermal interface material comprises: The battery module according to claim 5 , wherein the first fin base and the second fin base are connected to each other and disposed above the first fin base and the second fin base.

8. The housing sheet is 10. The battery module according to claim 1, which is provided with an insulating sheet having a predetermined length.

9. The housing sheet is 9. The battery module according to claim 8, wherein the battery cell assembly is disposed so as to at least partially overlap one side of the battery cell assembly, a bottom of the battery cell assembly, the other side of the battery cell assembly, and an upper side of the battery cell assembly.

10. The one end and the other end of the housing sheet are The battery module according to claim 9 , wherein the battery cell assembly is disposed on one side of the battery cell assembly such that the battery cell assembly overlaps the battery module.

11. At least one battery module according to claim 1; a pack case that houses the at least one battery module.

12. The battery pack according to claim 11 , further comprising an adhesive member provided between the at least one battery module and the pack case for fixing the at least one battery module to the pack case.

13. A motor vehicle comprising at least one battery pack according to claim 11.

14. In a method for manufacturing a battery module, placing a length of the housing sheet on a conveyor belt that guides the transport in a predetermined direction; Mounting a plurality of cooling fin units, each of which includes a pair of first and second cooling fins for supporting both sides of a battery cell, on the housing sheet of the predetermined length; inserting a thermal interface material between the first cooling fin and the second cooling fin to couple the first cooling fin and the second cooling fin; passing the housing sheet over a ridge roller that forms a curved surface of a predetermined height; When a distance between the first cooling fin and the second cooling fin is increased by passing a ridge roller of the housing sheet, inserting at least one battery cell between the first cooling fin and the second cooling fin; and wrapping the at least one battery cell and the plurality of cooling fin units with the housing sheet so as to cover the at least one battery cell and the plurality of cooling fin units when the housing sheet passes through the ridge roller.

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