Battery module assembly and assembling method thereof

Abstract

The invention relates to a battery module assembly and a method of assembling the same. The battery module assembly includes: a battery module formed by stacking a plurality of battery cells each including an electrode tab; a cooling plate positioned adjacent to the battery module; and at least one bus bar positioned on a side surface of the battery module and electrically connecting the plurality of battery cells to each other. And the battery module further includes a sensing cover positioned at a predetermined distance from the bus bar and covering the battery module. Specifically, a heat dissipation layer is formed between the bus bar and the sensing cover, and the heat dissipation layer is positioned in contact with the cooling plate and dissipates heat generated in the battery module and the bus bar.

Description

Technical Field

[0001] The present disclosure relates to battery module assemblies and methods of assembling battery module assemblies. Background Art

[0002] Electrified vehicles include electric vehicles (EVs) driven by supplying power to a drive motor, hybrid electric vehicles (HEVs) driven using both an engine and a drive motor, and fuel cell electric vehicles (FCEVs) driven by supplying power to a motor using electricity generated in a fuel cell.

[0003] An electric vehicle includes a drive motor for driving the electric vehicle itself and a battery as a power storage device for supplying power to the drive motor. Examples of the battery include well-known nickel-metal hydride batteries and lithium polymer-based batteries.

[0004] Such a battery configuration has a battery pack formed by connecting a plurality of battery cells in series or in parallel, and is configured to adopt a structure in which a PCB including the battery cells and a protection circuit module (PCM) are coupled.

[0005] Specifically, a battery module assembly is configured using a structure that assembles multiple battery cells. The cell stack assembly is configured by stacking multiple battery cells in a single direction. The movement of the cell stack assembly, resulting from stacking the battery cells in a single direction, is restricted by a frame or plate surrounding the cell stack assembly. Consequently, the cell stack assembly is constrained and its movement is limited. The battery module assembly is configured in this manner.

[0006] The battery module assembly is formed to adopt a structure in which cell ends are exposed within the battery pack and in which modules are assembled using the cell ends. The battery module assembly adopts a structure in which a cooling plate is installed under the battery pack to cool and reduce the temperature of heat generated in the battery pack.

[0007] This battery module assembly does not employ a structure where the lower end of the battery pack directly contacts a cooling plate to reduce the heating temperature. Instead, it uses a heat dissipation layer that forms a cooling flow path to reduce the battery pack temperature. Consequently, there is a problem: only partially reducing the temperature of the lower end of the battery pack fails to lower the temperature of the entire battery module assembly.

[0008] Furthermore, the battery module assembly is manufactured by stacking battery cells and assembling through-bolts in the tab direction. Due to the through-bolts, heat generated within the battery module assembly cannot be effectively reduced. The space for installing a cooling flow path at the lower end of the battery module assembly cannot be expanded, thereby reducing the cooling efficiency of the battery module assembly.

[0009] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. Summary of the Invention

[0010] The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a battery module assembly capable of reducing the temperature drop of the entire battery module assembly while preventing temperature deviation of heat generated in the battery module assembly itself.

[0011] Another object of the present disclosure is to provide a battery module assembly capable of improving cooling efficiency and efficiency in managing its temperature.

[0012] The present disclosure is not limited to the above-mentioned objects. Through the embodiments of the present disclosure in the following specific embodiments, the objects not mentioned above can be clearly understood. In addition, the objects of the present disclosure can be achieved by the limitations or combinations thereof recorded in the claims.

[0013] A battery module assembly for achieving the above-mentioned object of the present disclosure has the following configuration.

[0014] According to one aspect of the present disclosure, a battery module assembly includes: a battery module formed by stacking a plurality of battery cells, each of which includes an electrode sheet; a cooling plate positioned adjacent to the battery module; at least one bus bar positioned on a side surface of the battery module and electrically connecting the plurality of battery cells to one another; and a sensing cover positioned a predetermined distance from the at least one bus bar and covering the battery module. Specifically, a heat dissipation layer is formed between the at least one bus bar and the sensing cover, and the heat dissipation layer is positioned in contact with the cooling plate and dissipates heat generated in the battery module and the at least one bus bar.

[0015] In the battery module assembly, a cooling plate may be positioned on a bottom surface of the battery module.

[0016] In the battery module assembly, the sensing cover may be in contact with the heat dissipation layer, and at least one bus bar may be positioned in contact with the heat dissipation layer.

[0017] In the battery module assembly, the sensing cover may be made of one of the following thermally conductive materials: aluminum, copper, and silver.

[0018] In a battery module assembly, the heat dissipation layer may be formed of a thermal interface material (TIM).

[0019] In the battery module assembly, the heat dissipation layer may be formed of a metal material having thermal conductivity.

[0020] In the battery module assembly, the cooling plate may absorb heat generated in the battery module using a sensing cover and a heat dissipation layer in contact with the cooling plate.

[0021] In the battery module assembly, the battery module and the sensing cover may be arranged to be spaced a predetermined distance apart from each other, a guide hole may be formed in a space created by the space, and the liquid heat dissipation layer may be injected into the guide hole.

[0022] In the battery module assembly, the sensing cover may include a rib formed in a direction of the cooling plate, wherein the cooling plate may be seated on the rib.

[0023] The battery module assembly may further include an injection plate positioned between the battery module and the sensing cover to prevent the liquid heat dissipation layer from leaking to the battery cells.

[0024] In the battery module assembly, one or more battery module assemblies are arranged along a first direction and a second direction, and a through bolt is positioned between the battery module assemblies positioned along the second direction.

[0025] In the battery module assembly, the first direction may be a length direction of the plurality of battery cells, and the second direction may be a direction in which the battery cells are stacked.

[0026] In the battery module assembly, at least one bus bar may include a peripheral bus bar for adjusting a position of the heat dissipation layer, and the peripheral bus bar is formed in Korean characters. or shape to prevent the flow of the liquid heat dissipation layer.

[0027] A method of assembling a battery module assembly for achieving the above-mentioned object of the present disclosure has the following configuration.

[0028] According to another aspect of the present disclosure, a method for assembling a battery module assembly includes: stacking a plurality of battery cells having electrode sheets; connecting the electrode sheets of the plurality of battery cells through at least one bus bar to configure a battery module; attaching a cooling plate to the battery module; arranging a sensing cover on the front and rear surfaces of the battery module; arranging the battery module and the sensing cover to be spaced a predetermined distance apart from each other; injecting a liquid heat dissipation layer into a space formed between the battery module and the sensing cover; and cooling the battery module and at least one bus bar.

[0029] In this method, a cooling plate may be attached to the bottom surface of the battery module.

[0030] In this method, the injection plate may be positioned between the battery module and the sensing cover, and using the injection plate, the position of the liquid heat dissipation layer may be adjusted in such a manner that the liquid heat dissipation layer does not leak.

[0031] In the method, connecting the plurality of battery cells and configuring the battery module may further include: assembling injection plates to front and rear surfaces of the stacked plurality of battery cells; and pressing the injection plates to the front and rear surfaces of the plurality of battery cells.

[0032] In this method, during the process of arranging the battery module and the sensing cover and injecting the liquid heat dissipation layer, the liquid heat dissipation layer may be injected using a guide hole.

[0033] In the method, the heat dissipation layer may be formed of a thermal interface material (TIM), the cooling plate is formed of a metal material having thermal conductivity, and the sensing cover is made of one of the following materials having thermal conductivity: aluminum, copper, and silver.

[0034] According to the present disclosure, the following advantageous effects are obtained through the above-described embodiments and through the configurations, combinations, and application-based relationships described below.

[0035] According to the present disclosure, the temperature of the entire battery module assembly can be lowered in such a manner that the temperature of heat generated in the battery module assembly itself is deviated.

[0036] In addition, according to the present invention, the cooling efficiency of the battery module assembly can be improved, and the temperature thereof can be managed efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and other features of the present disclosure will now be described in detail with reference to certain embodiments of the invention shown in the accompanying drawings, which are given by way of illustration only and therefore do not limit the present disclosure, and in which:

[0038] Figure 1 is a cross-sectional view illustrating a cross section of a battery module assembly according to an embodiment of the present disclosure;

[0039] Figure 2 is a perspective view showing a portion of a battery module assembly according to the present disclosure installed in a vehicle;

[0040] Figure 3 is a perspective view showing a battery module assembly according to the present disclosure;

[0041] Figure 4 It is along Figure 3 A cross-sectional view taken along line BB in FIG.

[0042] Figure 5 It is along Figure 3 A cross-sectional view taken along line CC in FIG.

[0043] Figure 6 is a cross-sectional view illustrating the position of a heat dissipation layer in a battery module assembly according to an embodiment of the present disclosure;

[0044] Figure 7 is a diagram showing a battery module assembly according to the present disclosure, viewed from the top; and

[0045] Figure 8is a block diagram sequentially illustrating steps of a method of assembling a battery module assembly according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0046] The following describes the embodiments of the present disclosure in more detail with reference to the accompanying drawings. The embodiments of the present disclosure may be modified in various forms, and the scope of the present disclosure should not be construed as limited to the embodiments described below. The embodiments are described in sufficient detail to enable one of ordinary skill in the art to make and use the present disclosure without undue experimentation.

[0047] The terms “unit,” “module,” etc. used throughout the specification refer to a single component that performs at least one function or operation and can be implemented in hardware, software, or a combination of both.

[0048] The terms used in this specification are only used to describe specific embodiments and are not intended to impose any limitations on the specific embodiments. Unless the noun has a different meaning in the context, a noun in the singular has the same meaning as when used in its plural form.

[0049] When a component, device, element, etc. of the present disclosure is described as having a purpose or performing an operation, function, etc., the component, device, or element should be considered herein as being “configured to” satisfy the purpose or perform the operation or function.

[0050] In addition, in order to distinguish between constituent elements having the same name, the terms "first", "second", etc. are used throughout this specification. In the following description, no limitation is necessarily imposed on the order of the terms.

[0051] The embodiments are described in detail below with reference to the accompanying drawings. The same reference numerals are assigned to the same components or to components corresponding to each other. The same description is not repeated.

[0052] Figure 1 is a cross-sectional view illustrating a cross section of a battery module assembly according to an embodiment of the present disclosure. Figure 2 is a perspective view showing a portion of a battery module assembly according to the present invention mounted in a vehicle. Figure 3 is a perspective view illustrating a battery module assembly according to the present disclosure. Figure 4 It is along Figure 3 A cross-sectional view taken along line BB in FIG. Figure 5 It is along Figure 3 Cross-sectional view taken along line CC in FIG.

[0053] Figure 6 is a cross-sectional view specifically illustrating the position of a heat dissipation layer in a battery module assembly according to an embodiment of the present disclosure. Figure 7 is a diagram illustrating a battery module assembly according to the present disclosure, viewed from the top. Figure 8is a block diagram sequentially illustrating steps of a method of assembling a battery module assembly according to an embodiment of the present disclosure.

[0054] Reference Figures 1 to 6 The battery module assembly 10 according to the first embodiment of the present disclosure includes: a battery module 100 formed by stacking a plurality of battery cells 120 each including an electrode sheet 110; a cooling plate 200 positioned on the bottom surface of the battery module 100; and a bus bar 300 positioned on the side surface of the battery module 100 and electrically connecting the plurality of battery cells 120 to each other. The battery module 100 also includes a sensing cover 400 positioned a predetermined distance away from the bus bar 300 and covering the battery module 100. The battery module assembly 10 adopts a structure in which a heat dissipation layer 500 is formed in a space "S" between the bus bar 300 and the sensing cover 400 due to the spacing.

[0055] The battery module 100 of the battery module assembly 10 according to the first embodiment of the present disclosure is configured as a stack assembly formed by stacking a plurality of battery cells 120 in one direction. The battery cell 120 may have a shape of a cylinder, a pouch, a square, or the like. The number of battery cells 120 constituting one battery cell stack assembly may fall within a range appropriately selected by a person of ordinary skill in the art. In addition, the battery cell stack assembly may be formed as a group produced by stacking a plurality of battery cells 120 according to the present disclosure in a single row. In addition, the plurality of battery cells 120 according to the present disclosure are respectively connected to the electrode sheets 110. Therefore, the plurality of battery cells 120 are configured to have an electrically coupled structure. In addition, the battery cells 120 are charged using power supplied from the outside, and the battery cells 120 are discharged by supplying the stored power to the outside.

[0056] According to the present disclosure, the battery module 100 is described as being formed by configuring the battery cells 120 and the electrode sheets 110. However, the secondary battery may be configured to have various structures of the battery module 100 manufactured by a person of ordinary skill in the art to which the present disclosure pertains. A secondary battery that undergoes repeated charge or discharge through an electrochemical reaction is used as the battery module 100 according to the present disclosure. In addition, a high-capacity secondary battery may be suitable for driving a vehicle.

[0057] The cooling plate 200 of the battery module assembly 10 according to the first embodiment of the present disclosure is located on the bottom surface of the battery module 100, contacts the sensing cover 400 and the heat dissipation layer 500 described below, and is used to absorb and dissipate the heat generated in the battery module 100. Specifically, the cooling plate 200 of the battery module assembly 10 may be made of a metal material having high thermal conductivity to effectively dissipate the heat generated in the battery module 100. For example, the cooling plate 200 may be formed of a metal material having high thermal conductivity (such as aluminum or copper) and may adopt various shapes, such as a heat sink and a cooling plate. For example, the cooling plate 200 may adopt any shape or material as long as it can effectively maximize the heat transfer generated in the battery module 100.

[0058] In addition, the cooling plate 200 according to the present disclosure can be manufactured in the shape of a plate with an expanded area for contacting the sensing cover 400 and the heat dissipation layer 500, thereby improving cooling efficiency. The cooling plate 200 according to the present invention is described as having a plate shape, but the cooling plate 200 can also have a cooling flow path. In addition, the cooling plate 200 can also adopt a structure in which a cooling line through which a coolant flows is provided inside the cooling plate 200, and in which the coolant serves as a refrigerant.

[0059] In another embodiment, the bus bar 300 of the battery module assembly 10 is connected to each of the electrode sheets 110 and electrically connects the plurality of battery cells 120 and the substrate (not shown) to each other. In addition, a bus bar 300 according to the present disclosure is provided, which is shaped to be coupled to each of the positive electrode and the negative electrode of the battery module 100 at both sides of the battery cell 120. The bottom surface of the bus bar 300 may be arranged to be positioned adjacent to the cooling plate 200 but not in contact therewith. In addition, one or more bus bars 300 are arranged. In addition, the bus bar 300 adjacent to the heat dissipation layer 500 is formed to form Korean characters. or The peripheral bus bar 310 is shaped to prevent the liquid heat dissipation layer 500 from flowing and to adjust the position of the heat dissipation layer 500. Specifically, the peripheral bus bar 310 is positioned adjacent to the heat dissipation layer 500 in one or more bus bars 300. The peripheral bus bar 310 is formed to have a larger area than other bus bars 300. The peripheral bus bar 310 can be formed into Korean characters. or shape to prevent the liquid heat dissipation layer 500 from flowing.

[0060] The sensing cover 400 of the battery module assembly 10 according to the first embodiment of the present disclosure is positioned such that its bottom surface contacts the cooling plate 200. Furthermore, the sensing cover 400 is configured such that its side surface is spaced a predetermined distance from the bus bar 300 and contacts the heat dissipation layer 500. Specifically, the sensing cover 400 may be made of a material having thermal conductivity to effectively dissipate heat generated in the battery module 100 and significantly reduce the temperature of the battery module 100. Examples of such materials include aluminum, copper, and silver.

[0061] In addition, the sensing cover 400 according to the present disclosure can also be used to protect the battery module 100. Therefore, the sensing cover 400 can be made into a shape appropriately designed by a person skilled in the art according to the appropriate shape and size of the battery module 100.

[0062] In addition, ribs 410 may be formed on the sensing cover 400 according to the present disclosure in the direction of the cooling plate 200. The sensing cover 400 may be configured to adopt a structure in which the cooling plate 200 is seated on the ribs 410.

[0063] Reference Figure 6 , the cooling plate 200 may be arranged to contact the ribs 410 on the sensing cover 400. The reason for forming the ribs 410 on the sensing cover 400 is to stably contact the cooling plate 200 with the sensing cover 400 and to expand the area of contact between the sensing cover 400 and the cooling plate 200. In addition, the ribs 410 on the sensing cover 400 increase the area of contact between the sensing cover 400 and the cooling plate 200, thereby effectively reducing the heat generated in the battery module 100.

[0064] The sensing cover 400 according to the present disclosure is made of a thermally conductive material, has its bottom surface in contact with the cooling plate 200, and its side surface in contact with the heat dissipation layer 500. Thus, heat generated in the battery module 100 can be effectively dissipated.

[0065] The heat dissipation layer 500 of the battery module assembly 10 according to the first embodiment of the present disclosure is positioned in the space "S" between the bus bar 300 and the sensing cover 400. The heat dissipation layer 500 contacts the cooling plate 200 so that the heat dissipation layer 500 serves to dissipate heat generated in the battery module 100 and the bus bar 300.

[0066] Specifically, the heat dissipation layer 500 of the battery module assembly 10 according to the present disclosure is formed of a thermal interface material (TIM). The heat dissipation layer 500 is arranged so that one surface thereof can be attached to the sensing cover 400 and a different surface opposite to the one surface can contact the bus bar 300.

[0067] Figure 7 is a diagram showing a battery module assembly according to the present disclosure when viewed from the top. Figure 7, one or more battery module assemblies 10 according to the present disclosure may be configured and may be arranged in a first direction and a second direction.

[0068] In this case, the first direction is the lengthwise direction of the battery cells, and the second direction is the direction in which the battery cells are stacked. In related art, through-bolts 700 are installed along the busbars 300 of the battery module assembly 10 or along the electrode sheets 110. However, in one embodiment of the present disclosure, through-bolts 700 are installed between the battery module assemblies 10. In related art, the positioning of through-bolts 700 does not effectively reduce heat generated in the busbars 300 or electrode sheets 110. However, assembling through-bolts 700 between the battery module assemblies 10 according to the present disclosure can effectively reduce heat generated within the battery module assemblies 10. Furthermore, according to the present disclosure, through-bolts 700 are used to establish a connection with the battery module assemblies 10. Therefore, the positioning of through-bolts 700 can expand the space available for installing the cooling plate 200 or the cooling flow path located below the battery module assembly 10. This simple configuration of changing the position of through-bolts 700 allows for thermal management of the battery module assembly 10, which can reduce heat generated within the battery module assembly 10.

[0069] The heat dissipation layer 500 is located in the space S created by the gap between the bus bar 300 and the sensing cover 400. A guide hole (not shown) is formed in the space S created by the gap. The liquid heat dissipation layer 500 is injected into the guide hole. In addition, the cooling plate 200 is arranged on the bottom surface of the space S created by the gap so that the liquid heat dissipation layer 500 does not flow.

[0070] A method of assembling the battery module assembly 10 by injecting the liquid heat dissipation layer 500 through the guide hole when assembling the battery cells 120 and the sensing cover 400 of the stacked battery module 100 is described in detail below.

[0071] Figure 8 is a block diagram illustrating a method of manufacturing a battery module assembly according to an embodiment of the present disclosure.

[0072] Reference Figure 8 , the steps of the method of manufacturing the battery module assembly 10 are sequentially described.

[0073] For the battery module assembly 10 , a plurality of battery cells 120 are stacked in one direction (step S100 ).

[0074] In step S200, the electrode tabs are connected to the plurality of battery cells 120. Bus bars 300 are assembled, which electrically connect the battery cells 120 to each other in the direction in which each electrode tab 110 protrudes. The bus bars 300 may be coupled to both side surfaces of the plurality of battery cells 120, respectively. The battery module 100 may be formed by electrically connecting the electrode tabs 110 and the bus bars 300 to the battery cells 120.

[0075] In step S300, the cooling plate 200 is attached to the bottom surface of the battery module 100. The cooling plate 200 is attached to the battery module 100 in a close contact manner to cool the battery module 100 or reduce the temperature of the battery module. In addition, the expansion of the area of the cooling plate 200 in contact with the battery module 100 increases the area of the cooling plate 200 to which the battery module 100 transfers heat. That is, by expanding the contact area with the battery module (100), the heat transfer area to the battery module (100) is increased. Therefore, the battery module 100 can be cooled quickly, or the temperature of the battery module 100 can be effectively reduced.

[0076] Subsequently, in step S400, the sensing cover 400 is positioned on the front and rear surfaces of the battery module 100 and is arranged to be spaced a predetermined distance from the battery module 100. In addition, the cooling plate 200 is attached to the bottom surface of the sensing cover 400. When the area of the sensing cover 400 in contact with the cooling plate 200 is expanded and in close contact with the cooling plate 200, the area to which the heat of the sensing cover 400 is transferred is also increased, thereby contributing to the rapid cooling of the battery module 100 and the reduction of its temperature. Therefore, it is desirable to form close contact between the sensing cover 400 and the cooling plate 200 and to expand the close contact area.

[0077] Subsequently, in step S500, a liquid heat dissipation layer 500 is injected into the space S formed between the battery module 100 and the sensing cover 400 due to the spacing. The liquid heat dissipation layer 500 is injected through the guide holes in the space "S" between the battery module 100 and the sensing cover 400, preventing the liquid heat dissipation layer 500 from flowing into the other module. The cooling plate 200 is positioned on the bottom surface of the heat dissipation layer 500, and the positions of the sensing cover 400 and the battery module 100 are adjusted to prevent leakage of the liquid heat dissipation layer 500. As a result, the heat dissipation layer 500 can be stably positioned in the space S.

[0078] In another embodiment, the battery module assembly 10 may further include an injection plate 600 located in the space S between the sensing cover 400 and the battery module 100 to stably inject the liquid heat dissipation layer 500. The injection plate 600 is located adjacent to the battery cells 120 of the battery module 100 and is used to regulate the flow of the liquid heat dissipation layer 500 so that it is not injected into the battery module 100.

[0079] In step S600, the battery module 100 and bus bar 300 are cooled. Specifically, a liquid heat dissipation layer 500 is injected, and the cooling plate 200 is driven to cool the heat dissipation layer 500 or reduce its temperature. The cooling plate 200 can adopt a plate shape or flow path to fully cool the bottom of the battery module 100 and bus bar 300.

[0080] By cooling the cooling plate 200, the low temperature is transferred to the sensing cover 400 and the heat dissipation layer 500, which are in contact with the cooling plate 200. The material properties of the sensing cover 400 and the heat dissipation layer 500 can significantly promote rapid temperature transfer to the bus bar 300. The cooling plate 200, which is in contact with the battery module 100, can also quickly reduce the temperature of the battery module 100.

[0081] This coupling relationship in the battery module assembly 10 according to the present disclosure can significantly reduce the temperature of the battery module 100. In addition, the battery module 100 is positioned so that its bottom surface is in contact with the cooling plate 200. The sensing cover 400 and the heat dissipation layer 500 are positioned so that their bottom surfaces are in contact with the cooling plate 200. Thus, the temperature deviation generated in the battery module 100 can be effectively reduced. As a result, a battery module assembly 10 that can effectively control the heat generation in the battery module 100 can be achieved. In addition, the positioning of the heat dissipation layer 500 between the sensing cover 400 and the bus bar 300 can change the position of the assembled through bolt 700 in the direction of the electrode sheet, thereby improving the cooling efficiency of the battery module assembly 10.

[0082] The present disclosure has been described in detail above in an exemplary manner. In addition, the embodiments of the present disclosure are described in sufficient detail so that a person of ordinary skill in the art can practice the present disclosure. Various modifications and combinations can be made to the embodiments of the present disclosure under various conditions. Within the scope of the concepts of the present disclosure, the scope of the disclosed equivalents, and / or the scope of the technology or knowledge in the art, the embodiments disclosed in the present disclosure will be modified or changed. Various modifications that may be required in the application field of the present disclosure can also be made to the embodiments. Therefore, these embodiments of the present disclosure as disclosed in detail above are not intended to impose any limitations on the present disclosure. In addition, the following claims should also be interpreted as covering other embodiments of the present disclosure.

Claims

1. A battery module assembly, comprising: A battery module formed by stacking a plurality of battery cells, each of which includes an electrode sheet; a cooling plate positioned adjacent to the battery module; at least one bus bar located on a side surface of the battery module and electrically connecting the plurality of battery cells to each other; as well as a sensing cover positioned to be spaced a predetermined distance from the at least one bus bar and to cover the battery module, wherein a heat dissipation layer is formed between the at least one bus bar and the sensing cover, and The heat dissipation layer is positioned in contact with the cooling plate and is configured to dissipate heat generated in the battery module and the at least one bus bar.

2. The battery module assembly according to claim 1, wherein: A cooling plate is positioned on a bottom surface of the battery module.

3. The battery module assembly according to claim 1, wherein: The sensing cover is in contact with the heat dissipation layer, and the at least one bus bar is positioned in contact with the heat dissipation layer.

4. The battery module assembly according to claim 1, wherein: The sensing cover is made of one of the following thermally conductive materials: aluminum, copper and silver.

5. The battery module assembly according to claim 1, wherein: The heat dissipation layer is formed of a thermal interface material.

6. The battery module assembly according to claim 1, wherein: The heat dissipation layer is formed of a metal material having thermal conductivity.

7. The battery module assembly according to claim 1, wherein: The cooling plate is configured to absorb heat generated in the battery module using the sensing cover and the heat dissipation layer in contact with the cooling plate.

8. The battery module assembly according to claim 1, wherein: The battery module and the sensing cover are arranged to be spaced apart from each other by a predetermined distance, a guide hole is formed in a space created by the spacing, and the heat dissipation layer in a liquid state is injected into the guide hole.

9. The battery module assembly according to claim 1, wherein: The sensing cover comprises: ribs, formed along the direction of the cooling plate, The cooling plate is placed on the rib.

10. The battery module assembly according to claim 1, further comprising: An injection plate is positioned between the battery module and the sensing cover to prevent the liquid heat dissipation layer from leaking to the plurality of battery cells.

11. The battery module assembly according to claim 1, wherein: One or more battery module assemblies are arranged along a first direction and a second direction, and through bolts are positioned between the battery module assemblies positioned along the second direction.

12. The battery module assembly according to claim 11, wherein: The first direction is a length direction of the plurality of battery cells, and the second direction is a direction in which the plurality of battery cells are stacked.

13. The battery module assembly according to claim 1, wherein: The at least one bus bar includes a peripheral bus bar for adjusting a position of the heat dissipation layer, and the peripheral bus bar is formed in Korean characters. or The shape prevents the liquid heat dissipation layer from flowing.

14. A method of assembling a battery module assembly, the method comprising: stacking a plurality of battery cells having electrode sheets; connecting the electrode sheets of the plurality of battery cells via at least one bus bar to configure a battery module; attaching a cooling plate to the battery module; Arranging sensing covers on the front and rear surfaces of the battery module; arranging the battery module and the sensing cover to be spaced a predetermined distance apart from each other; injecting a liquid heat dissipation layer into a space formed between the battery module and the sensing cover; as well as The battery module and the at least one bus bar are cooled.

15. The method according to claim 14, wherein The cooling plate is attached to a bottom surface of the battery module.

16. The method according to claim 14, wherein An injection plate is positioned between the battery module and the sensing cover, and the injection plate is used to adjust the position of the liquid heat dissipation layer in such a way that the liquid heat dissipation layer does not leak.

17. The method according to claim 14, wherein: Connecting the plurality of battery cells and configuring the battery module further comprises: assembling injection plates to the front and rear surfaces of the plurality of stacked battery cells; and The injection plate is pressed to the front and rear surfaces of the plurality of battery cells.

18. The method according to claim 14, wherein During the process of arranging the battery module and the sensing cover and injecting the liquid heat dissipation layer, the liquid heat dissipation layer is injected through a guide hole.

19. The method according to claim 14, wherein The liquid heat dissipation layer is formed of a thermal interface material, the cooling plate is formed of a metal material with thermal conductivity, and the sensing cover is made of one of the following materials with thermal conductivity: aluminum, copper, and silver.

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