KR102465865B1 - Battery module, method of manufacturing the same and battery pack - Google Patents

Abstract

A battery module according to an embodiment of the present invention includes a battery cell stack in which a plurality of battery cells are stacked, a module frame accommodating the battery cell stack and an open upper part, and the battery cell on the open module frame upper part and an upper plate covering the laminate, the module frame including a bottom and two side surfaces facing each other, the bottom including a first part and a second part, and the first part of the battery cell It is positioned at an edge in the longitudinal direction, and the second part is positioned inside the first part, and a thickness of the first part is smaller than a thickness of the second part.

Description

Battery module, manufacturing method thereof, and battery pack

The present invention relates to a battery module, a manufacturing method thereof, and a battery pack, and more particularly, to a battery module that improves space utilization and minimizes component damage, a manufacturing method thereof, and a battery pack.

Secondary batteries, which are easy to apply according to product groups and have electrical characteristics such as high energy density, are universally applied to electric vehicles or hybrid vehicles driven by an electric drive source, as well as portable devices, and power storage devices. These secondary batteries are attracting attention as a new energy source for improving eco-friendliness and energy efficiency in that not only the primary advantage of being able to dramatically reduce the use of fossil fuels, but also the fact that no by-products are generated from the use of energy.

While one or two or three battery cells are used per device in small mobile devices, medium and large devices such as automobiles require high output and high capacity. Accordingly, a medium or large-sized battery module in which a plurality of battery cells are electrically connected is used.

Since it is desirable to manufacture the medium and large-sized battery modules as small as possible in size and weight, prismatic batteries, pouch-type batteries, etc. that can be stacked with a high degree of integration and have a small weight to capacity are mainly used as battery cells of the medium and large-sized battery modules. On the other hand, the battery module, in order to protect the cell stack from external impact, heat, or vibration, the front and rear are opened may include a frame member for accommodating the battery cell stack in the internal space.

1 is a perspective view showing a battery module having a conventional mono frame.

Referring to FIG. 1 , the battery module includes a battery cell stack 12 formed by stacking a plurality of battery cells 11 , a mono frame 20 with front and rear surfaces open to cover the battery cell stack 12 , and An end plate 60 covering the front and rear surfaces of the mono frame 20 may be included. In order to form such a battery module, horizontal assembly is required so that the battery cell stack 12 is inserted into the open front or rear surface of the mono frame 20 along the X-axis direction as shown by the arrow shown in FIG. 1 . However, sufficient clearance must be secured between the battery cell stack 12 and the mono frame 20 so that the horizontal assembly can be stably performed. Here, the clearance refers to a gap generated by fitting or the like. If the free space is small, component damage may occur during the horizontal assembly process. Therefore, the height of the mono frame 20 should be designed to be large in consideration of the maximum height of the battery cell stacking material 12 and the assembly tolerance during the insertion process, which may result in wasted space unnecessarily.

SUMMARY OF THE INVENTION An object of the present invention is to provide a battery module, a manufacturing method thereof, and a battery pack that improve space utilization rate and minimize component damage by modifying the structure of a frame member surrounding a battery cell stack.

However, the problems to be solved by the embodiments of the present invention are not limited to the above-described problems and may be variously expanded within the scope of the technical idea included in the present invention.

A battery module according to an embodiment of the present invention includes a battery cell stack in which a plurality of battery cells are stacked, a module frame accommodating the battery cell stack, and the module frame includes a bottom portion and two side surfaces facing each other a top plate, wherein the bottom part includes a first part and a second part, the first part is located at an edge in the longitudinal direction of the battery cell, and the second part is located inside the first part and the thickness of the first part is thinner than the thickness of the second part.

The battery module further includes a bus bar frame connected to the battery cell stack, and the module frame has both sides facing each other open based on a direction in which the electrode leads of the battery cell stack protrude, and the module frame At both open sides of the bus bar frame is connected to the battery cell stack, the bus bar frame includes a main frame disposed perpendicular to the direction in which the electrode leads protrude and a bent portion extending from the lower portion of the main frame can do.

The bent part may be positioned on the first part of the bottom part.

The sum of the thickness of the bent portion and the thickness of the first portion may be thinner than the thickness of the second portion.

The battery cell may include a protrusion formed in a width direction, and the protrusion may be positioned on the bent portion.

The battery module may further include a pad portion positioned between the second portion and the battery cell stack.

The battery module may further include a thermally conductive resin layer positioned between the second part and the battery cell stack, and the pad part may be positioned between the thermally conductive resin layer and the first part.

The bottom of the module frame and the two side portions facing each other have a U-shaped frame structure with an open top, the U-shaped frame is coupled to the upper plate, and the battery is perpendicular to the stacking direction of the plurality of battery cells. A lower surface of the cell stack may be mounted on the bottom of the module frame.

The module frame may further include an end plate coupled to both open sides, respectively, and the open both sides of the module frame may face each other based on a direction in which the electrode leads of the battery cell stack protrude.

A distance between the two side portions may be equal to a width of the upper plate.

The side portion of the module frame may include a round portion formed along an inner edge of the side portion.

The battery pack according to another embodiment of the present invention includes the battery module described above.

The method for manufacturing a battery module according to another embodiment of the present invention includes the steps of mounting a battery cell stack to the bottom of a frame having an open top and including a bottom and two side parts facing each other, the open frame top Including the steps of mounting an upper plate to cover the battery cell stack, combining the upper plate and the side portions of the frame, and coupling end plates to the open sides of the frame, respectively, the battery The cell stack is mounted on the bottom of the frame while moving along a direction perpendicular to the bottom of the frame.

In the battery module manufacturing method, before mounting the battery cell stack to the bottom of the frame, while moving the bus bar frame in the opposite direction to the direction in which the electrode leads of the battery cells included in the battery cell stack protrude, the battery The method may further include connecting the cell stack and the bus bar frame.

The battery module manufacturing method may further include applying a thermal conductive resin to the bottom of the frame before mounting the battery cell stack to the bottom of the frame.

The battery module manufacturing method may further include forming a pad part on the bottom of the frame before the step of applying the thermal conductive resin, and the pad part may guide the application position of the applied thermal conductive resin.

The battery cell stack may be inserted into the bottom of the frame in a direction perpendicular to the stacking direction of the plurality of battery cells included in the battery cell stack.

According to embodiments, it is possible to improve the space utilization rate by implementing a U-shaped frame by reducing the free space between the battery cell stack and the frame compared to the prior art.

In addition, the protective cover required to prevent damage during assembly can be removed.

In addition, by processing the bottom edge of the U-shaped frame to reduce the gap between the battery cell stack and the frame, it is possible to improve space utilization in the height direction.

1 is an exploded perspective view showing a battery module having a conventional mono frame.
2 is an exploded perspective view illustrating a battery module according to an embodiment of the present invention.
3 is a perspective view showing a state in which the components of the battery module of FIG. 2 are combined.
4 is a perspective view illustrating one battery cell included in the battery cell stack of FIG. 2 .
5 is a perspective view illustrating a U-shaped frame in the battery module of FIG. 2 .
6 is a perspective view illustrating a bus bar frame in the battery module of FIG. 2 .
7 is a cross-sectional view taken along the XZ plane, which is the longitudinal direction of the battery cell stack in FIG. 3 .
8 is a cross-sectional view of a battery module corresponding to the comparative example of FIG. 7 .
9 is a perspective view showing a modified embodiment of the side portion of the U-shaped frame in the battery module of FIG.
10 is a perspective view illustrating a U-shaped frame corresponding to the comparative example of FIG. 9 .
11 to 13 are views illustrating a method of manufacturing a battery module according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, various embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar elements throughout the specification.

In addition, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar. In order to clearly express various layers and regions in the drawings, the thicknesses are enlarged. And in the drawings, for convenience of explanation, the thickness of some layers and regions is exaggerated.

Also, when a part of a layer, film, region, plate, etc. is said to be “on” or “on” another part, it includes not only cases where it is “directly on” another part, but also cases where there is another part in between. . Conversely, when we say that a part is "just above" another part, we mean that there is no other part in the middle. In addition, to be "on" or "on" the reference portion means to be located above or below the reference portion, and to necessarily mean to be located "on" or "on" in the direction opposite to gravity not.

In addition, throughout the specification, when a part "includes" a certain component, this means that other components may be further included rather than excluding other components unless otherwise stated.

In addition, throughout the specification, when it is referred to as "planar view", it means when the target part is viewed from above, and when it is referred to as "cross-section", it means when the cross-section obtained by cutting the target part vertically is viewed from the side.

2 is an exploded perspective view illustrating a battery module according to an embodiment of the present invention. 3 is a perspective view showing a state in which the components of the battery module of FIG. 2 are combined. 4 is a perspective view illustrating one battery cell included in the battery cell stack of FIG. 2 .

2 and 3 , the battery module 100 according to this embodiment is a battery cell stack 120 including a plurality of battery cells 110 , a U-shaped frame in which the upper surface, the front surface and the rear surface are open. 300, the upper plate 400 covering the upper portion of the battery cell stack 120, the end plate 150 and the battery cell stack 120 respectively positioned on the front and rear surfaces of the battery cell stack 120 and and a bus bar frame 130 positioned between the end plates 150 .

When the open both sides of the U-shaped frame 300 are referred to as the first side and the second side, respectively, the U-shaped frame 300 is the battery cell stack 120 corresponding to the first side and the second side. Among the remaining outer surfaces except for the surface, the plate-shaped structure is bent so as to continuously cover the adjacent front surface, the lower surface and the rear surface. The upper surface corresponding to the lower surface of the U-shaped frame 300 is open.

The upper plate 400 has a single plate-shaped structure that covers the remaining upper surface except for the front, lower and rear surfaces covered by the U-shaped frame 300 . The U-shaped frame 300 and the upper plate 400 may form a structure surrounding the battery cell stack 120 by being coupled by welding or the like in a state in which corresponding corner portions are in contact with each other. That is, the U-shaped frame 300 and the upper plate 400 may be formed with a coupling portion CP formed by a coupling method such as welding at the corresponding corner portions.

The battery cell stack 120 includes a plurality of battery cells 110 stacked in one direction, and the plurality of battery cells 110 may be stacked in the Y-axis direction as shown in FIG. 2 . The battery cell 110 is preferably a pouch-type battery cell. For example, referring to FIG. 4 , in the battery cell 110 according to the present embodiment, two electrode leads 111 and 112 face each other, so that one end 114a and the other end 114b of the battery body 113 are opposite to each other. ) has a structure protruding from each other. The battery cell 110 is manufactured by adhering both ends 114a and 114b of the case 114 and both side surfaces 114c connecting them in a state in which an electrode assembly (not shown) is accommodated in the battery case 114 . can In other words, the battery cell 110 according to the present embodiment has a total of three sealing portions 114sa, 114sb, 114sc, and the sealing portions 114sa, 114sb, 114sc are sealed by a method such as thermal fusion. , the other one side may be formed of a connection part 115 . Between both ends (114a, 114b) of the battery case 114 is defined in the longitudinal direction of the battery cell 110, one side portion 114c connecting the both ends (114a, 114b) of the battery case 114 and the connecting portion A space between 115 may be defined in the width direction of the battery cell 110 .

The connection part 115 is a region extending long along one edge of the battery cell 110 , and a protrusion 110p of the battery cell 110 may be formed at an end of the connection part 115 . The protrusion 110p may be formed on at least one of both ends of the connection part 115 , and may protrude in a direction perpendicular to the direction in which the connection part 115 extends. The protrusion 110p may be positioned between one of the sealing parts 114sa and 114sb of both ends 114a and 114b of the battery case 114 and the connection part 115 .

The battery case 114 generally has a laminate structure of a resin layer/metal thin film layer/resin layer. For example, when the surface of the battery case is made of an O (oriented)-nylon layer, when stacking a plurality of battery cells to form a medium or large-sized battery module, it tends to slide easily due to an external impact. Therefore, in order to prevent this and maintain a stable laminated structure of the battery cells, an adhesive member such as an adhesive adhesive such as a double-sided tape or a chemical adhesive bonded by a chemical reaction during adhesion is attached to the surface of the battery case to form a battery cell laminate. (120) can be formed. In this embodiment, the battery cell stack 120 is stacked in the Y-axis direction, is accommodated in the U-shaped frame 300 in the Z-axis direction, and may be cooled by a thermally conductive resin layer to be described later. As a comparative example to this, there is a case where the battery cells are formed as cartridge-shaped parts, and the fixing between the battery cells is made by assembling the battery module frame. In this comparative example, there is little or no cooling action due to the presence of the cartridge-shaped part, or it may proceed in the direction of the surface of the battery cell, and the cooling is not well in the direction of the height of the battery module.

5 is a perspective view illustrating a U-shaped frame in the battery module of FIG. 2 .

Referring to FIG. 5 , the U-shaped frame 300 according to the present embodiment includes a bottom portion 300a and two side portions 300b facing each other. Before the battery cell stack 120 described in FIG. 2 is mounted on the bottom part 300a of the U-shaped frame 300, a thermal conductive resin is applied to the bottom part 300a of the U-shaped frame 300, and thermoelectric The conductive resin may be cured to form the thermally conductive resin layer 310 .

Before forming the thermally conductive resin layer 310 , that is, before the applied thermally conductive resin is cured, the battery cell stack 120 is in a direction perpendicular to the bottom portion 300a of the U-shaped frame 300 . It may be mounted on the bottom portion 300a of the U-shaped frame 300 while moving. Thereafter, the thermally conductive resin layer 310 formed by curing the thermally conductive resin is positioned between the bottom portion 300a of the U-shaped frame 300 and the battery cell stack 120 . The thermally conductive resin layer 310 may serve to transfer heat generated in the battery cell 110 to the bottom of the battery module 100 and to fix the battery cell stack 120 .

The battery module according to the present embodiment may further include a pad part 320 formed on the bottom part 300a of the U-shaped frame 300 . The pad part 320 may guide the application position of the thermal conductive resin or prevent the thermal conductive resin from overflowing to the outside of the bottom part 300a, and at least one may be formed. In FIG. 5 , one pad part 320 is formed in the center of the bottom part 300a and one pad part 320 is formed at both ends of the bottom part 300a based on the X-axis direction. The size, position, number, and the like of the pad part 320 may be designed to be modified. The pad part 320 may be formed of an insulating film. At this time, the pad part 320 may be formed of a material such as polyurethane foam or rubber so that the thermal conductive resin can be compressed by contacting the battery cell 110 on the bottom part 300a.

2 and 3 again, the width of the side portion 300b and the upper plate 400 of the U-shaped frame 300 according to the present embodiment may be the same as each other. In other words, the edge portion along the X-axis direction of the upper plate 400 and the edge portion along the X-axis direction of the side portion 300b of the U-shaped frame 300 may directly meet and be coupled by a method such as welding.

6 is a perspective view illustrating a bus bar frame in the battery module of FIG. 2 .

Referring to FIG. 6 , the bus bar frame 130 according to the present embodiment includes a main frame 130a disposed perpendicular to the direction in which the electrode leads 111 and 112 described with reference to FIG. 4 protrude, and the main frame 130a. and a bent portion 130b extending from the lower portion of the . The bus bar frame 130 is connected to the battery cell stack 120 as described with reference to FIGS. 2 and 3 . In the main frame 130a, an electrode lead may pass through a slit to form a structure coupled with a bus bar. The bent portion 130b may be bent by approximately 90 degrees with respect to the main frame 130a and positioned on the bottom portion 300a of the U-shaped frame 300 . The bent portion 130b and the peripheral configuration will be further described with reference to FIG. 7 .

7 is a cross-sectional view taken along the XZ plane, which is the longitudinal direction of the battery cell stack in FIG. 3 . 8 is a cross-sectional view of a battery module corresponding to the comparative example of FIG. 7 .

Referring to FIG. 7 , the battery cell 110 according to the present embodiment includes a protrusion 110p formed in the width direction, and the protrusion 110p is positioned on the bent portion 130b. Here, the width direction of the battery cell 110 may be the Z-axis direction of FIG. 7 . The bottom part 300a of the U-shaped frame according to this embodiment includes a first part 300a1 and a second part 300a2, and the first part 300a1 is based on the longitudinal direction of the battery cell 110. It is positioned at the edge, and the second part 300a2 is positioned inside the first part 300a1 . In this case, the thickness of the first part 300a1 is preferably thinner than the thickness of the second part 300a2 . Here, the longitudinal direction of the battery cell 110 may be the X-axis direction of FIG. 7 .

6 and 7 , in the present embodiment, the bent portion 130b of the bus bar frame 130 is located at the first portion 300a1 of the bottom portion 300a of the U-shaped frame. In this case, the sum of the thickness of the bent portion 130b and the thickness of the first portion 300a1 is preferably thinner than the thickness of the second portion 300a2 . This is because the protrusion 110p of the battery cell 110 is caught by the step difference between the first part 300a1 and the second part 300a2 and can be prevented from flowing due to an external shock. In addition, it is possible to reduce the gap between the battery cell 110 and the frame through the processing of the U-shaped frame bottom part 300a, and this gap reducing effect is a synergistic effect and a gap reducing effect that can be obtained through assembly in the height direction. to maximize overall space efficiency. The processing of the U-shaped frame bottom portion 300a may simultaneously form a step difference between the bottom portion 300a while forming the U-shaped frame structure. Press molding or NC (numerical control work) processing may be used to form such a step.

The pad part 320 is positioned between the second part 300a2 of the bottom part 300a and the battery cell 110 , and the thermal conductive resin layer 310 is positioned inside the pad part 320 . That is, the pad part 320 may be positioned between the thermal conductive resin layer 310 and the first part 300a1 of the bottom part 300a to define a position where the thermal conductive resin layer 310 is formed.

Referring to FIG. 8 , compared with the embodiment of FIG. 7 , the thickness of the bottom portion 300a ′ of the U-shaped frame is uniform. When the battery cell 110' and the protrusion 110p' of the same size as the battery cell 110 described in FIG. 7 are mounted on the bottom part 300a' of the U-shaped frame, the bottom part 300a' of FIG. The height of the thermal conductive resin layer 310 ′ and the pad part 320 ′ may be increased as there is no same level difference. Therefore, compared to the comparative example of FIG. 8 , as in the embodiment of FIG. 7 , it is possible to improve the space utilization rate by reducing the free space between the battery cell 110 and the frame, as well as to lower the thickness of the thermal conductive resin layer 310 . Therefore, it is possible to reduce the amount of the thermally conductive resin used to form the thermally conductive resin layer 310 .

9 is a perspective view showing a modified embodiment of the side portion of the U-shaped frame in the battery module of FIG. 10 is a perspective view illustrating a U-shaped frame corresponding to the comparative example of FIG. 9 .

Referring to FIG. 9 , in the U-shaped frame according to the present embodiment, the side portion 300b may include a round portion 300r formed along the inner edge of the side portion 300b. Referring to FIG. 10 , the mono frame 20 has no choice but to be inserted into the battery cell stack in a horizontal direction as indicated by an arrow. When a cut surface is generated in the process of forming the mono frame 20, the mono frame 20 is chamfered (20c) at the beginning of the insertion into the battery cell stack to remove the burr of the cut surface. can In this case, a separate processing cost may occur, but when a U-shaped frame is formed as shown in FIG. 3, it can be formed by press working, so that a separate processing cost is not generated and burr removal of the cut surface is unnecessary. Furthermore, as shown in FIG. 9, when the battery cell stack is mounted on the U-shaped frame, a round part 300r is formed in the insertion direction to minimize the possibility of damage when inserting the battery cell stack, and the round part 300r. In addition, since it is possible to form together when forming a U-shaped frame by press working, it is possible to reduce the separate processing cost.

Hereinafter, an example of the manufacturing method of the battery module according to the present embodiment described above will be described.

11 to 13 are views illustrating a method of manufacturing a battery module according to another embodiment of the present invention.

Referring to FIG. 11 , the method for manufacturing a battery module according to this embodiment includes laminating the battery cell stack 120 on the bottom part 300a of the U-shaped frame 300 with an open top. At this time, in the direction (Z-axis direction) perpendicular to the stacking direction of the plurality of battery cells 110 included in the battery cell stack 120 , the battery cell stack 120 is positioned at the bottom of the U-shaped frame 300 ( 300a) is preferably inserted.

In the battery module manufacturing method according to this embodiment, before mounting the battery cell stack 120 to the bottom part 300a of the U-shaped frame 300 , the battery cells 110 included in the battery cell stack 120 . ) may further include connecting the battery cell stack 120 and the bus bar frame 130 while moving the bus bar frame 130 in a direction opposite to the direction in which the electrode leads protrude. In addition, in the battery module manufacturing method, a thermal conductive resin is applied to the bottom portion 300a of the U-shaped frame 300 before mounting the battery cell stack 120 to the bottom portion 300a of the U-shaped frame 300 . It may further include the step of applying. The step of forming the pad part 320 described in FIG. 5 on the bottom part 300a of the U-shaped frame 300 before the step of applying the thermal conductive resin may be further included. 5 and 11, when the thermal conductive resin is applied between the pad parts 320, the pad part 320 not only guides the application position of the thermal conductive resin, but also prevents the thermal conductive resin from overflowing. and the amount of thermal conductive resin to be applied can be easily adjusted.

In contrast to this, a thermally conductive resin layer for heat transfer and fixing of the cell stack may be formed between the lower portion of the battery cell stack 12 and the mono frame 20 described with reference to FIG. 1 . In general, after inserting the battery cell stack 12 into the monoframe 20 , the thermally conductive resin layer is formed by inserting the thermally conductive resin through an injection hole formed in the monoframe 20 . However, in the case of the injection method as described above, it is difficult to quantitatively inject the thermal conductive resin due to the free space of components in each battery module, and there is a limit in forming the thermal conductive resin layer having a uniform thickness.

Referring to FIG. 12 , the method of manufacturing a battery module according to this embodiment includes mounting the upper plate 400 to cover the battery cell stack 120 on the open U-shaped frame 300 . In this embodiment, since the upper plate 400 is coupled to the upper portion of the U-shaped frame 300 in the vertical Z-axis direction by a method such as welding, the mono frame 20 of FIG. 1 is attached to the battery cell stack 12 . A protective cover (not shown) required to protect the battery cell 11 during the insertion process may be omitted.

Referring to FIG. 13 , the method for manufacturing a battery module according to this embodiment includes the steps of coupling the upper plate 400 and the side portion 300b of the U-shaped frame and end plates 150 on both open sides of the U-shaped frame, respectively. It includes the step of combining A welding method, a bonding method using an adhesive, a bolting method, a riveting method, and a tape bonding method may be used to couple the upper plate 400 and the side portion 300b of the U-shaped frame.

Meanwhile, one or more battery modules according to an embodiment of the present invention may be packaged in a pack case to form a battery pack.

The above-described battery module and battery pack including the same may be applied to various devices. Such a device may be applied to transportation means such as an electric bicycle, an electric vehicle, and a hybrid vehicle, but the present invention is not limited thereto and is applicable to various devices that can use a battery module and a battery pack including the same. It belongs to the scope of the invention.

Although the preferred embodiment of the present invention has been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also provided. is within the scope of the

100: battery module
110p: overhang
130a: main frame
130b: bend
150: end plate
300: U-shaped frame
400: upper plate

Claims (17)

A battery cell stack in which a plurality of battery cells are stacked,
A module frame for accommodating the battery cell stack, and
The module frame includes a bottom portion and two side portions facing each other and an upper plate,
The bottom part includes a first part and a second part, the first part is positioned at an edge in the longitudinal direction of the battery cell, the second part is positioned inside the first part, and the first part is thinner than the thickness of the second part battery module. In claim 1,
Further comprising a bus bar frame connected to the battery cell stack,
The module frame has open sides opposite to each other based on the direction in which the electrode leads of the battery cell stack protrude, and the bus bar frame is connected to the battery cell stack at both open sides of the module frame,
The bus bar frame includes a main frame disposed perpendicular to a direction in which the electrode leads protrude, and a bent portion extending from a lower portion of the main frame. In claim 2,
The bent part is located on the first part of the bottom part of the battery module. In claim 3,
The sum of the thickness of the bent portion and the thickness of the first portion is thinner than the thickness of the second portion. In claim 4,
The battery cell includes a protrusion formed in a width direction, and the protrusion is positioned on the bent portion. In claim 1,
A battery module further comprising a pad portion positioned between the second portion and the battery cell stack. In claim 6,
A battery module further comprising a thermally conductive resin layer positioned between the second part and the battery cell stack, wherein the pad part is positioned between the thermally conductive resin layer and the first part. In claim 1,
The bottom portion and the two side portions facing each other of the module frame have a U-shaped frame structure with an open top, and the U-shaped frame is coupled to the upper plate,
A battery module in which a lower surface of the battery cell stack perpendicular to the stacking direction of the plurality of battery cells is mounted on the bottom of the module frame. In claim 1,
The battery module further includes an end plate coupled to each of the open both sides of the module frame, wherein the open both sides of the module frame are opposed to each other based on a direction in which the electrode leads of the battery cell stack protrude. In claim 1,
The distance between the two side parts is the same as the width of the upper plate battery module. In claim 1,
The side part of the module frame includes a round part formed along the inner edge of the side part. Mounting the battery cell stack to the bottom part of the frame having an open top and including a bottom part and two side parts facing each other;
Mounting an upper plate to cover the battery cell stack on the upper part of the open frame;
coupling the upper plate and the side portion of the frame; and
Including the step of coupling each end plate to the open both sides of the frame,
The battery cell stack is mounted on the bottom of the frame while moving in a direction perpendicular to the bottom of the frame,
The method of manufacturing a battery module further comprising applying a thermal conductive resin to the bottom of the frame before mounting the battery cell stack to the bottom of the frame. In claim 12,
Before mounting the battery cell stack to the bottom of the frame, while moving the bus bar frame in a direction opposite to the direction in which the electrode leads of the battery cells included in the battery cell stack protrude, the battery cell stack and the bus Battery module manufacturing method further comprising the step of connecting the bar frame. delete In claim 12,
Further comprising the step of forming a pad portion on the bottom of the frame before the step of applying the thermally conductive resin,
The pad part is a battery module manufacturing method for guiding the application position of the applied thermal conductive resin. In claim 12,
A method of manufacturing a battery module in which the battery cell stack is inserted into the bottom of the frame in a direction perpendicular to the stacking direction of the plurality of battery cells included in the battery cell stack. A battery pack comprising the battery module according to claim 1 .

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