阅读说明：本技术 电池模块及其制造方法 (Battery module and method for manufacturing same ) 是由 池昊俊 文祯晤 金炅模 陈喜俊 朴振勇 于 2020-03-23 设计创作，主要内容包括：根据本发明的一个实施方式的电池模块包括：多个电池电芯,所述多个电池电芯相邻地平行堆叠；电池电芯组件,所述电池电芯组件具有从多个电池电芯中的每一个突出的多条电极引线；以及模块盖,所述模块盖容纳所述电池电芯组件,其中,所述模块盖包括在覆盖所述电池电芯组件的上表面和侧表面的同时使多条电极引线暴露的上盖单元以及在与通过所述上盖单元暴露的多条电极引线对应的位置处与所述上盖单元联接以与所述上盖单元一体形成的汇流条框架单元,并且所述汇流条框架单元包括电连接到所述多条电极引线的多个汇流条。(A battery module according to an embodiment of the present invention includes: a plurality of battery cells stacked adjacently in parallel; a battery cell assembly having a plurality of electrode leads protruding from each of a plurality of battery cells; and a module cover accommodating the battery cell assembly, wherein the module cover includes an upper cover unit exposing a plurality of electrode leads while covering an upper surface and side surfaces of the battery cell assembly, and a bus bar frame unit coupled with the upper cover unit at positions corresponding to the plurality of electrode leads exposed by the upper cover unit to be integrally formed with the upper cover unit, and the bus bar frame unit includes a plurality of bus bars electrically connected to the plurality of electrode leads.)

1. A battery module, comprising:

a battery cell assembly including a plurality of battery cells stacked adjacent and in parallel with one another and a plurality of electrode leads protruding from each of the plurality of battery cells; and

a module cover accommodating the battery cell assembly,

wherein the module cover includes: an upper cover part covering an upper surface and side surfaces of the battery cell assembly while exposing the plurality of electrode leads; and a bus bar frame portion coupled with the upper cover portion to be integrally formed with the upper cover portion at positions corresponding to the plurality of electrode leads exposed through the upper cover portion, and

the bus bar frame portion includes a plurality of bus bars electrically connected to the plurality of electrode leads.

2. The battery module of claim 1,

the bus bar frame portion includes a plurality of slits into which the plurality of electrode leads are inserted, and

the plurality of bus bars are disposed within the plurality of slots.

3. The battery module of claim 2,

the plurality of slits are opened toward a lower surface of the battery cell assembly exposed through the upper cover portion.

4. The battery module of claim 1,

the battery cell assembly also includes an insulating pad surrounding the battery cell assembly and positioned between the battery cell assembly and the upper cover portion.

5. The battery module of claim 1,

the upper cover portion further includes a cell-receiving tape disposed between the battery cell assembly and the upper cover portion.

6. The battery module of claim 1,

the module cover further includes a lower plate covering a lower surface of the battery cell assembly exposed through the upper cover portion.

7. The battery module of claim 6, further comprising:

a heat dissipation pad disposed between the lower plate and the battery cell assembly.

8. The battery module of claim 1,

each of the plurality of bus bars includes a clamping portion into which the electrode lead is inserted and a fixing portion that connects and fixes the clamping portion.

9. The battery module of claim 1,

the portions to which the bus bar frame portion and the upper cover portion are coupled are combined by welding.

10. A manufacturing method of a battery module, the manufacturing method comprising the steps of:

providing a battery cell assembly comprising a plurality of battery cells stacked adjacent and in parallel with one another and a plurality of electrode leads protruding from each of the plurality of battery cells;

preparing an upper cover part including a space accommodating the battery cell assembly by including an upper surface and two side surfaces perpendicular to the upper surface;

providing the upper cover portion and two bus bar frame portions to cover both open ends of the space, and integrally combining the upper cover portion and the bus bar frame portions to manufacture a module cover; and

receiving the battery cell assembly in the space.

11. The manufacturing method according to claim 10,

the bus bar frame portion includes a plurality of slits including openings into which a plurality of electrode leads are inserted, and the step of accommodating the battery cell assembly in the space includes inserting the plurality of electrode leads into the openings formed in the plurality of slits.

12. The manufacturing method according to claim 10,

the bus bar frame portion includes a plurality of bus bars disposed in the plurality of slits and electrically connected to the plurality of electrode leads.

13. The manufacturing method according to claim 10, further comprising the steps of:

wrapping at least a portion of an outer surface of the battery cell assembly with an insulating mat prior to receiving the battery cell assembly in the space.

14. The manufacturing method according to claim 10, further comprising:

attaching a cell receiving tape to an inner wall of the space of the upper cover portion before receiving the battery cell assembly in the space.

15. The manufacturing method according to claim 10,

the step of receiving the battery cell assembly in the space includes receiving the battery cell assembly such that an upper surface of the battery cell assembly faces downward, and further includes displaying a lower plate to cover a lower surface of the battery cell assembly opposite to the upper surface of the battery cell assembly so as to be coupled with the upper cover portion.

16. The manufacturing method according to claim 15, further comprising:

a thermal pad is disposed between the lower plate and the lower surface of the battery cell assembly.

17. The manufacturing method according to claim 10,

the coupling of the upper cover portion and the bus bar frame portion is performed by welding.

18. A battery pack, comprising:

at least one battery module according to any one of claims 1-9; and

and a package housing enclosing at least one battery module.

19. A device comprising at least one battery pack according to claim 18.

Technical Field

Cross Reference to Related Applications

This application claims priority and benefit to korean patent application No. 10-2019-0034618, filed on 26.3.2019 to the korean intellectual property office, the entire contents of which are incorporated herein by reference.

The present invention relates to a battery module and a method of manufacturing the same, and more particularly, to a battery module having improved ease of assembly and a method of manufacturing the same.

Background

Rechargeable batteries having high application characteristics and electrical characteristics (such as high energy density) according to products thereof are widely used in electric vehicles, hybrid vehicles, and power storage devices driven by an electric drive source, as well as portable devices. These rechargeable batteries are receiving attention as new energy sources for improving environmental friendliness and energy efficiency because they do not generate any by-products of energy use, and their main advantages are that they can greatly reduce the use of fossil fuels.

A battery pack applied to an electric vehicle has a structure in which a plurality of cell assemblies including a plurality of unit cells are combined in series to obtain high power. In addition, by including the positive and negative electrode current collectors, the separator, the active material, and the electrolyte, the unit cells may be repeatedly charged and discharged through electrochemical reactions between the constituent elements.

On the other hand, with the recent increase in demand for large-capacity structures and the utilization as energy storage sources, there is an increasing demand for battery packs of a multi-module structure that assembles a plurality of battery modules in which a plurality of rechargeable batteries are combined in series and/or parallel.

When a plurality of battery cells are combined in series/parallel to constitute a battery pack, a method is common in which a battery module is first composed of at least one battery cell and other constituent elements are added using the at least one battery module to construct the battery pack. The number of battery modules included in the battery pack or the number of battery cells included in the battery module may be variously set according to a desired output voltage or charge and discharge capacity.

When the battery module is manufactured, the bus bars are connected to the electrode leads of the battery cell assembly, and in this process, an upper assembly on which a flexible printed circuit board for sensing is formed, and a bus bar frame with the bus bars is hinged to the bus bars, so that the bus bar frame has a structure combined with the battery cell assembly by rotation. However, in this structure, there are problems as follows: the bus bar frame is deviated and moved (flow) in the hinge portion, or the flexible printed circuit board is damaged in the hinge portion, and when the bus bar frame is rotated and combined with the electrode lead, there is a problem that it is difficult to align the electrode lead and the bus bar.

Disclosure of Invention

Technical problem

The present invention has been made to solve such problems, and provides a battery module and a method of manufacturing the same, which facilitate assembly between components in the battery module and improve stability by simplifying the structure thereof.

However, the object of the present invention is not limited to the above object and can be extended in various ways within the spirit and scope of the present invention.

Technical scheme

A battery module according to an embodiment of the present invention includes: a battery cell assembly including a plurality of battery cells stacked adjacent to and in parallel with each other and a plurality of electrode leads protruding from each of the plurality of battery cells; and a module cover accommodating the battery cell assembly, wherein the module cover includes an upper cover part exposing a plurality of electrode leads while covering upper and side surfaces of the battery cell assembly, and a bus bar frame part coupled with the upper cover part to be integrally formed with the upper cover part at positions corresponding to the plurality of electrode leads exposed through the upper cover part, and the bus bar frame part includes a plurality of bus bars electrically connected to the plurality of electrode leads.

The bus bar frame portion may include a plurality of slits into which the plurality of electrode leads are inserted, and a plurality of bus bars may be disposed within the plurality of slits.

The plurality of slits may be opened toward a lower surface of the battery cell assembly exposed through the upper cover portion.

The battery cell assembly may further include an insulating pad surrounding the battery cell assembly and positioned between the battery cell assembly and the upper cap portion.

The upper cover portion may further include a cell-receiving tape disposed between the battery cell assembly and the upper cover portion.

The module cover may further include a lower plate covering a lower surface of the battery cell assembly exposed through the upper cover portion.

The battery module may further include a heat dissipation pad disposed between the lower plate and the battery cell assembly.

Each of the plurality of bus bars may include a clamping portion into which the electrode lead is inserted and a fixing portion that connects and fixes the clamping portion.

The portions to which the bus bar frame portion and the upper cover portion are coupled may be combined by welding.

The method for manufacturing a battery module according to an embodiment of the present invention includes: providing a battery cell assembly comprising a plurality of battery cells stacked adjacent and in parallel with one another and a plurality of electrode leads protruding from each of the plurality of battery cells; preparing an upper cover part including a space accommodating the battery cell assembly by including an upper surface and two side surfaces perpendicular to the upper surface; providing the upper cover portion and two bus bar frame portions to cover both open ends of the space, and integrally combining the upper cover portion and the bus bar frame portions to manufacture a module cover; and accommodating the battery cell assembly in the space.

The bus bar frame portion may include a plurality of slits including openings into which a plurality of electrode leads are inserted, wherein the accommodating of the battery cell assembly in the space includes inserting the plurality of electrode leads into the openings formed in the plurality of slits.

The bus bar frame portion may include a plurality of bus bars disposed in the plurality of slits and electrically connected to the plurality of electrode leads.

The method of manufacturing a battery module may further include wrapping at least a portion of an outer surface of the battery cell assembly with an insulating mat before the battery cell assembly is received in the space.

The manufacturing method of the battery module may further include attaching a cell receiving tape to an inner wall of the space of the upper cover portion before receiving the battery cell assembly in the space.

The receiving of the battery cell assembly in the space may include receiving the battery cell assembly such that an upper surface of the battery cell assembly faces downward, and the manufacturing method of the battery module may further include displaying a lower plate to cover a lower surface of the battery cell assembly opposite to the upper surface of the battery cell assembly so as to be coupled with the upper cover part.

The method of manufacturing a battery module may further include providing a heat dissipation pad disposed between the lower plate and a lower surface of the battery cell assembly.

The coupling of the upper cover portion and the bus bar frame portion may be formed by welding.

A battery pack according to an embodiment of the present invention includes at least one battery module as described above, and a package housing that encloses the at least one battery module.

An apparatus according to an embodiment of the invention comprises at least one battery as described above.

Advantageous effects

According to the embodiment, by integrally forming the bus bar frame and the upper cover, it is possible to provide a battery module and a method of manufacturing the same: the battery module and the manufacturing method thereof prevent the damage of parts and the separation of components caused by the hinge structure, and have a simplified manufacturing process and improved accuracy by the assembly in a method of inserting the electrode leads into the slits formed in the bus bar frame.

Drawings

Fig. 1 is an exploded view of a battery module according to an embodiment of the present invention.

Fig. 2 is a view illustrating a combined state of a module cover and a battery cell assembly in a battery module according to an embodiment of the present invention.

Fig. 3 is a view illustrating a combined state of electrode leads and bus bars in a battery module according to an embodiment of the present invention.

Fig. 4 is a diagram illustrating a module cover according to an embodiment of the present invention.

Fig. 5 is a cross-sectional view of a module cover and battery cell assembly according to another embodiment of the present invention.

Fig. 6 illustrates a sectional view of a battery module according to another embodiment of the present invention.

Detailed Description

The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, without departing from the spirit or scope of the present invention.

The drawings and description are to be regarded as illustrative in nature, and not as restrictive. Like reference numerals refer to like elements throughout the specification.

In addition, the sizes and thicknesses of the respective components shown in the drawings are arbitrarily illustrated for convenience of understanding and description, but the present invention is not limited thereto. In the drawings, the thickness of layers, films, plates, regions, etc. are exaggerated for clarity. In addition, in the drawings, the thickness of some layers and regions are exaggerated for better understanding and ease of description.

It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, if an element is referred to as being "directly on" another element, there are no intervening elements present. In addition, "upper" means being positioned above or below the object portion, but does not necessarily mean being positioned on the upper side of the object portion based on the direction of gravity.

In addition, unless explicitly described to the contrary, the word "comprise" and variations such as "comprises" or "comprising" will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.

Now, a battery module according to an embodiment of the present invention will be described with reference to fig. 1 to 3.

Fig. 1 is an exploded view of a battery module according to an embodiment of the present invention, fig. 2 is a view illustrating a combined state of a module cover and a battery cell assembly in the battery module according to the embodiment of the present invention, and fig. 3 is a view illustrating a combined state of electrode leads and bus bars in the battery module according to the embodiment of the present invention.

Referring to fig. 1, a battery module 10 according to the present embodiment includes: a plurality of battery cells 110, the plurality of battery cells 110 being stacked parallel to and adjacent to each other; a battery cell assembly 100, the battery cell assembly 100 including a plurality of electrode leads 120 protruding from each of a plurality of battery cells 110; and a module cover 200, the module cover 200 accommodating the battery cell assembly 100, the module cover 200 including an upper cover portion 210 and a bus bar frame portion 220, the upper cover portion 210 exposing the plurality of electrode leads 120 while covering upper and side surfaces of the battery cell assembly 100, the bus bar frame portion 220 being coupled with the upper cover portion 210 to be integrally formed with the upper cover portion 210 at positions corresponding to the plurality of electrode leads 120 exposed through the upper cover portion 210, and the bus bar frame portion 220 including a plurality of bus bars 230 electrically connected to the plurality of electrode leads 120.

Battery cell assembly 100 is an assembly of rechargeable batteries that includes a plurality of battery cells 110. Battery cell assembly 100 may include a plurality of battery cells 110, and each battery cell 110 may include an electrode assembly, a battery case, and an electrode lead 120 protruding from the electrode assembly. The electrode assembly may be composed of a positive electrode plate, a negative electrode plate, and a separator. The battery case serves to package the electrode assembly, and may be made of a laminate sheet including a resin layer and a metal layer. The battery case may include a case main body and a cell platform (112, see fig. 3). The electrode lead 120 may be electrically connected to the electrode assembly. In addition, the battery cells 110 may be pouch-type battery cells having a plate shape, but are not limited thereto.

The electrode lead 120 may be formed of a flat plate to protrude toward at least one side of the battery cell 110. The electrode leads 120 may be stacked and protrude in one direction, by which the electrode leads 120 may be connected in series or in parallel. The electrode lead 120 may serve as a battery terminal, and may be formed of a metal material such as copper or aluminum. In addition, the electrode lead 120 may be formed in various thicknesses and various widths. The thickness or width of the electrode lead 120 may be variously manufactured according to the specifications of the rechargeable battery and the battery module.

A plurality of battery cells 110 are vertically stacked such that electrode leads 120 are aligned in one direction, thereby forming a battery cell assembly 100. The battery cell assembly 100 is received to the module cover 200, the module cover 200 including: an upper cover part 210, the upper cover part 210 exposing the plurality of electrode leads 120 while covering the upper and side surfaces of the battery cell assembly 100; and a bus bar frame part 220, the bus bar frame part 220 being coupled with the upper cover part 210 to be integrally formed with the upper cover part 210 at positions corresponding to the plurality of electrode leads 120 exposed through the upper cover part 210. At this time, the electrode leads 120 stacked and protruding in one direction are electrically connected to the bus bar 230 included in the bus bar frame part 220.

That is, the bus bar frame part 220 includes a plurality of slits 221, a plurality of electrode leads 120 may be inserted into the plurality of slits 221, and a bus bar 230 electrically connected to the electrode leads 120 is located within each slit 221. The slits 221 are opened toward the lower surface of the battery cell assembly 100 exposed through the upper cover part 210. As shown in fig. 3, the bus bar 230 has a shape of a long nipper or clip formed along the length direction of the slit 221. Referring to fig. 3, the bus bar 230 may be formed of a clamping portion 231 and a fixing portion 232, the clamping portion 231 being formed to insert the electrode lead 120, the fixing portion connecting and fixing the clamping portion 231.

The clamping part 231 may be formed in a shape diagonally extending from the fixing part 232 toward the opening of the slit 221, and when the electrode lead 120 is inserted, the electrode lead 120 may be in contact with the inner surface of the clamping part 231 between the extending parts of the clamping part 231. The fixing portion 232 serves to connect and fix the clamping portion 231 to the lower side of the clamping portion 231. The fixing part 232 is connected to a lower end of the clamping part 231, and according to an embodiment of the present invention, the fixing part 232 is formed to be bent with respect to a lower side of the clamping part 231, thereby allowing the electrode lead 120 to be easily inserted into the clamping part 231, and at the same time, preventing the clamping part 231 from being elastically deformed or moved, thereby fixing the clamping part 231.

The bus bar 230 as described above may be mounted on the slit 221, the slit 221 being formed on the upper cover portion 210 integrally formed with the bus bar frame portion 220. The slit 221 is opened in a direction opposite to the upper surface of the upper cover portion 210, and as shown in fig. 1, is opened in a direction facing the lower plate 300. Therefore, as shown in fig. 2, when the battery cell assembly 100 is received in the module cover 200, the electrode leads 120 are inserted into the slits 221 such that the electrode leads 120 are in contact with the bus bars 230 in a state where the upper cover portion 210 is disposed to face down.

At this time, the clamping part 231 and the fixing part 232 of the bus bar 230 are formed in the shape of a bent plate-shaped clip having a minimum width sufficient to contact the flat surfaces of the electrode leads 120, thereby reducing unnecessary volume of the conventional bus bar structure and mounting a lighter bus bar apparatus on the battery module.

The electrode leads 120 are electrically connected to the bus bars 230, and thus contact between the electrode leads 120 and the bus bars 230 is required. For this, the electrode leads 120 are stacked in a flat plate shape in a horizontal direction and formed to protrude in the plurality of battery cells 110, respectively, and the electrode leads 120 protruding in this manner are inserted into the clamping portions 231 of the bus bar 230, and then left and right contacted and fixed by the clamping portions 231, thereby achieving electrical connection with the bus bar 230.

The construction of the module cover 200 will now be described in more detail with reference to fig. 4.

Fig. 4 is a diagram illustrating a module cover according to an embodiment of the present invention.

The module cover 200 is constructed as follows: an upper cover part 210 covering the upper and both side surfaces of the battery cell assembly 100 and two bus bar frame parts 220 covering both sides not covered by the upper cover part 210 (i.e., the exposed surfaces of the electrode leads 120) are integrally formed.

As shown in fig. 4, the upper cover part 210 is composed of an upper surface covering the upper portion of the battery cell assembly 100 and two side surfaces vertically extending from the lengthwise edges of the upper surface to both sides. The upper cover portion 210 may include a skeletal-shaped reinforcing member inside to increase rigidity. The upper cover portion 210, which is composed of an upper surface and side surfaces formed on both sides, is formed such that the cross section has an angular U-shape and extends in a direction in which the side surfaces extend.

The two bus bar frame portions 220 are coupled to both ends of the upper cover portion 210 formed in an elongated shape in this manner, respectively. By integrally combining the bus bar frame portion 220 of the upper cover portion 210, the module cover 200 in the form of a box in which one surface in which the battery cell assembly 100 can be accommodated is opened is completed. At this time, the bus bar frame part 220 may be coupled to the upper cover part 210 by welding along a side contacting the upper cover part 210. Alternatively, the assembly may be performed by inserting both sides of the bus bar frame part 220 into the grooves after forming the grooves inside the upper cover part 210, and the method of integrally forming is not particularly limited.

In addition, the battery module 10 includes a Flexible Printed Circuit Board (FPCB)40 configured to sense the battery cells 110 by extending and mounting in a length direction of the battery cell assembly 100 at an upper portion of the battery cell assembly 100. As shown in fig. 4, in the present embodiment, the flexible printed circuit board 40 may be disposed inside the upper surface of the upper cover portion 210, and then mounted on the battery cell assembly 100, which is accommodated later, to be electrically connected to the battery cells.

In this way, by the construction in which the bus bar frame portion 220 and the upper cover portion 210 are integrally formed, a structure in which an ICB (internal circuit board) cover on the upper portion of the battery cell assembly and the bus bar frame is combined by a hinge structure may not be included. In other words, in the combination of the conventional hinge structure, the separation of the ICB cover from the bus bar frame is generated at the hinge part, or if the module is moved in a temporarily assembled state, it is difficult to respond to automation due to the movement generated in the hinge part, or there is a problem such as damage to the flexible printed circuit board passing through the hinge part. Further, the bus bars of the bus bar frame are configured to be coupled to the electrode leads of the battery cell assembly by rotation of the bus bar frame, and in this process, the bus bar frame and the electrode leads are difficult to be aligned.

However, in the present embodiment, since the bus bar frame portion 220 and the upper cover portion 210 are integrally formed as described above, a hinge structure causing many of the problems described above is not included at all, thereby solving the problems caused by the hinge structure. In addition, since the coupling method of the electrode leads 120 and the bus bars 230 is performed only by inserting the electrode leads 120 into the slits 221 formed on the bus bar frame part 220, the manufacturing process can also be simplified, and the electrode leads 120 and the bus bars 230 can be accurately combined.

Furthermore, as shown in fig. 1, the battery module 10 may be completed by coupling the lower plate 300 to the open portion of the module cover 200, which receives the battery cell assembly 100.

Next, a method of manufacturing a battery module according to an embodiment of the present invention is described.

First, a battery cell assembly 100 is provided, the battery cell assembly 100 including a plurality of battery cells 110 adjacent to and stacked in parallel with each other and a plurality of electrode leads 120 protruding from each of the plurality of battery cells 110.

In addition, an upper cover part 210 is provided, the upper cover part 210 being composed of an upper surface and two side surfaces vertically extending from a length-directional edge of the upper surface to both sides and including a space in which the battery cell assembly 100 is disposed.

And, the module cover 200 is completed by integrally combining the bus bar frame portion 220 to each of both end portions in the length direction of the upper cover portion 210.

Then, the battery cell assembly 100 is received in the module cover 200. At this time, the assembly is performed in such a manner that the electrode leads 120 of the battery cell assembly 100 are inserted into the slits 221 of the bus bar frame part 220. In other words, the bus bar 230 and the electrode lead 120 may be electrically connected to each other by inserting the electrode lead 120 into the clamping portion 231 of the bus bar 230 located within the slit 221 and contacting the clamping portion 231 and the electrode lead 120.

Subsequently, the battery module 10 may be completed by coupling the lower plate 300 to the open portion of the module cover 200, which receives the battery cell assembly 100. The coupling of the lower plate 300 may be accomplished by welding with the module cover 200 along the edge of the lower plate 300, but is not particularly limited. At this time, since the portion where the lower plate 300 is located becomes the bottom surface of the battery module 10, the battery module 10 in the original use state can be obtained by turning over the battery module 10 again after the assembly is completed.

According to the manufacturing method of the battery module, in particular, the combination of the electrode leads 120 and the bus bars 230 is implemented by inserting the electrode leads 120 into the slits 221 formed in the bus bar frame part 220, not by rotating the bus bar frame, and thus, the process may be simply and accurately performed.

Next, a battery module according to another embodiment of the present invention is described with reference to fig. 5 and 6.

Fig. 5 is a sectional view of a module cover and a battery cell assembly according to another embodiment of the present invention, and fig. 6 is a sectional view of a battery module according to another embodiment of the present invention.

As shown in fig. 5, the battery cell assembly 100 according to the present embodiment includes an insulating mat 114 covering at least a portion of the outer surface thereof. That is, by accommodating the battery cell assembly 100 in the module cover 200 while covering the battery cell assembly 100 with the insulating mat 114, it is possible to prevent the battery cell assembly 100 from being damaged by collision with the edge of the module cover 200. In addition, since the battery cell assembly 100 is protected again by the insulating mat 114, it is desirable not only to obtain a heat insulating effect so as to be affected by a sudden external temperature change, but also to obtain an effect of insulating from other conductive members. As the insulating pad 114, a pad made of polyurethane or silicone foam may be used, but is not particularly limited.

Further, as shown in fig. 5, in the battery module 10 according to the present embodiment, the module cover 200 may further include a cell housing tape 201 attached to the inside thereof. That is, by attaching the cell receiving tape 201 to the inside of the module cover 200 before the battery cell assembly 100 is received in the module cover 200, it is preferable because the inner surface of the module cover 200 and the battery cell assembly 100, which are in contact with the battery cell assembly 100, can be protected. As the cell housing tape 201, a tape made of a material such as an acrolein base tape and a urethane foam tape may be used, but is not particularly limited.

In addition, as shown in fig. 6, the battery module 10 according to the present embodiment may further include a heat dissipation pad 310 between the lower plate 300 and the battery cell assembly 100. By providing the heat dissipation pad 310, the heat generated from the battery cell assembly 100 can be effectively discharged. As the heat dissipation pad 310, a pad made of a heat conductive resin may be used, and for example, at least one of an acryl-based resin, an epoxy resin, a urethane-based resin, an olefin resin, an EVA (ethylene vinyl acetate) resin, or a silicon-based resin may be included. As described above, according to the present embodiment, since the heat dissipation pad 310 is disposed between the lower plate 300 and the battery cell assembly 100, a process of injecting and curing a resin composition into a module frame may be omitted, thereby simplifying the process and providing excellent heat dissipation performance.

In addition, one or more battery modules according to exemplary embodiments of the present invention may be packaged in a package case to form a battery pack.

The above battery module and the battery pack including the same may be applied to various devices. The apparatus may be applied to vehicles such as electric bicycles, electric vehicles, hybrid vehicles, etc., but the present invention is not limited thereto, and may be applied to various devices in which a battery module may be used, and this is also included in the scope of the present invention.

While the invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Description of the symbols

10: battery module

100: battery cell module

120: electrode lead

200: module cover

210: upper cover part

220: bus bar frame part

230: bus bar

221: slit

300: lower plate