KR20130110246A - Base plate of battery module assembly with novel structure - Google Patents

Abstract

PURPOSE: A base plate for a battery module assembly prevents the volume of it from increasing and increases the efficiency of a production process while the deformation of a battery module assembly due to swelling is prevented. CONSTITUTION: A base plate (300) for a battery module assembly has a module accommodation part (301-304) formed of a plate material and on which one or more battery modules are mounted; an upwardly bent sidewall on at least a part of the outer surface of the plate material; and reinforcing beads (340) projected toward the battery module. The battery cell is a prismatic secondary batter or a pouch type secondary battery. The battery cells are fixed on a cartridge frame. The battery module consists of cartridge frames arranged on top of each other.

Description

Base Plate of Battery Module Assembly with Novel Structure

The present invention relates to a base plate for a battery module assembly having a novel structure, and more particularly, consisting of a plate formed on the upper surface of the module receiving portion on which at least one battery module is mounted, and on at least a part of the outer peripheral surface of the plate A sidewall of an upwardly bent structure is formed, and the module accommodating part relates to a base plate for a battery module assembly, characterized in that a reinforcement bead protruding toward the battery module is formed.

Due to the development of technology and increasing demand for mobile devices, the demand for secondary batteries is also rapidly increasing. Among them, lithium secondary batteries with high energy density, high operating voltage, and excellent storage and life characteristics are used for various mobile devices as well as various electronic products. It is widely used as an energy source.

The secondary battery is roughly classified into a cylindrical battery, a prismatic battery and a pouch-shaped battery according to the structural characteristics of the outside and the inside. Among them, the secondary battery can be stacked with a high degree of integration, and prismatic batteries and pouch- .

In addition, the secondary battery is attracting attention as an energy source for electric vehicles, hybrid electric vehicles, and the like, which is proposed as a solution for air pollution in existing gasoline vehicles and diesel vehicles using fossil fuels. Therefore, the application of the secondary battery is diversifying due to the advantages of the secondary battery, and it is expected that the secondary battery will be applied to many fields and products in the future.

As the application fields and products of the secondary battery are diversified, the type of the battery is also diversified to provide an appropriate output and capacity. In addition, batteries applied to the art and products are strongly required for small size and light weight.

For example, small mobile devices such as mobile phones, PDAs, digital cameras, notebook computers, and the like are used with one or two or four small and light battery cells per device according to the miniaturization tendency of the products. On the other hand, medium and large devices such as electric vehicles and hybrid electric vehicles, due to the need for high output capacity, a battery module (or sometimes referred to as a "medium and large battery pack") that electrically connects a plurality of battery cells is used. Since the size and weight of R are directly related to the accommodation space and output of the medium and large devices, manufacturers are trying to manufacture battery modules that are as small and lightweight as possible.

Meanwhile, in the conventional battery module, the secondary battery may generate gas while the battery is operated in an abnormal state due to overcharge, overdischarge, overheat, external shock, and the like. For example, an overheated cell generates gas, and the pressurized gas in the case further accelerates the decomposition reaction of the cell element, causing continuous overheating and gas generation, and swelling may occur. This phenomenon occurs even when the secondary battery gradually deteriorates due to prolonged use. At this time, in the case where the battery module is in direct contact with the outer surface of the battery pack, there is a problem that the outer surface of the battery pack is deformed together by swelling.

In order to solve this problem, the conventional battery module minimizes swelling by adding a separate structure to the outermost part, but this method increases the overall volume of the battery module assembly and causes a complicated production process. It is becoming.

Therefore, there is a high need for a technique capable of fundamentally solving such problems.

The present invention aims to solve the problems of the prior art and the technical problems that have been requested from the past.

Accordingly, an object of the present invention is to provide a base plate for the battery module assembly that can suppress the increase in volume and increase the efficiency of the production process while preventing the deformation of the battery module assembly by swelling by configuring a specific structure including the reinforcing beads To provide.

Another object of the present invention is to provide a battery module assembly that can be assembled in a compact (compact) structure, can be securely fixed to the inner storage member, and at the same time can achieve the effect of increasing the safety and efficiency of the production process To provide.

Base plate (base plate) for a battery module assembly according to the present invention for achieving the above object is made of a plate formed on the upper surface of the module receiving unit on which at least one battery module is mounted, the at least part of the outer peripheral surface of the plate A sidewall of an upwardly bent structure is formed, and the module accommodating portion has a structure in which reinforcing beads protruding toward the battery module are formed.

Therefore, the base plate for the battery module assembly according to the present invention prevents the outer surface of the battery module from being deformed during swelling without including a separate supporting structure due to the reinforcing beads, and is more compact. You can configure the assembly.

In one preferred example, the battery cell may be a rectangular secondary battery or a pouch secondary battery, but is not limited thereto.

The rectangular secondary battery may have a structure in which an electrode assembly is sealed in a rectangular metal case, and the pouch type secondary battery may specifically have a structure in which an electrode assembly is sealed in a laminate sheet including a resin layer and a metal layer.

The secondary battery may preferably be a lithium secondary battery having high energy density, discharge voltage, and output stability. Other components of such a lithium secondary battery will be briefly described below.

Generally, a lithium secondary battery is composed of a positive electrode, a negative electrode, a separator, a non-aqueous electrolyte containing a lithium salt, and the like.

The positive electrode is prepared, for example, by applying a mixture of a positive electrode active material, a conductive material and a binder on a positive electrode current collector, followed by drying, and if necessary, a filler is further added. The negative electrode is also manufactured by coating and drying a mixture of a negative electrode active material and a binder on a negative electrode current collector, and if necessary, the components as described above may be further included.

The separation membrane is interposed between the cathode and the anode, and an insulating thin film having high ion permeability and mechanical strength is used.

The lithium salt-containing nonaqueous electrolyte solution is composed of a nonaqueous electrolyte and a lithium salt. As the nonaqueous electrolyte solution, a liquid nonaqueous electrolyte, a solid electrolyte, and an inorganic solid electrolyte are used.

The collector, the electrode active material, the conductive material, the binder, the filler, the separator, the electrolyte, and the lithium salt are well known in the art, and a detailed description thereof will be omitted herein.

Such lithium secondary batteries may be prepared by conventional methods known in the art. That is, a porous separator may be inserted between the anode and the cathode, and an electrolyte may be injected into the separator.

The anode can be produced, for example, by applying a slurry containing the above-described lithium transition metal oxide active material, a conductive material and a binder on a current collector, followed by drying. Likewise, the negative electrode can be produced, for example, by applying a slurry containing the above-described carbon active material, a conductive material and a binder onto a thin current collector and then drying it.

In one preferred example, the battery cells in the battery module may be a structure that is connected in parallel to each other.

In a specific example, the parallel connection may be a structure achieved by a 'b' or 'c' shaped bus bar, but may be directly connected to electrode terminals of battery cells without a separate bus bar.

The battery cells are preferably fixed to a cartridge frame, and the battery module may have a laminated structure of the cartridge frames.

This cartridge frame is a structure having a predetermined rigidity, which protects the battery cells from external shocks and ensures stable mounting of the battery cells. In addition, by the cartridge frame, the battery cells are arranged so that the electrode leads face one side, thereby facilitating electrical parallel connection by the bus bar.

In addition, the battery cell electrode leads making an electrical parallel connection by the bus bar are connected to an electrode terminal, and the electrode terminal may be preferably formed on the same surface as one side of the electrode leads. Accordingly, the battery module, in which the battery cells are fixed by the cartridge frame and assembled by stacking the cartridge frame, facilitates a detection member for voltage measurement as well as electrical connection between the battery modules by electrode terminals formed on one side thereof. Can be installed.

The plate may be, for example, made of a plate of metal material.

In one preferred embodiment, two or more battery modules are mounted on the base plate, a plate-like member mounted on the top surface of the battery modules and fastened to the battery modules, the assembly including a cable fixing for fixing the cable It may further comprise an assembly cover.

By mounting the assembly cover, it is possible to stably mount and secure the battery module to the inner housing of the base plate, increase the overall rigidity when configuring the battery module assembly, and also stably secure the cables stored inside the base plate. Fastening can be fixed.

In the above structure, the battery modules may have a structure in which fasteners for fastening with the assembly cover are formed. Therefore, since the battery module is mounted on the upper surface of the module accommodating portion formed on the base plate and can be fastened with the assembly cover, it is possible to achieve a more robust and stable fixing effect. In addition, the fastening of the battery module and the assembly cover achieved through the fasteners may be fastening by bolts or rivets, but is not limited thereto.

On the other hand, the protruding height of the reinforcing beads, preferably, may be a size of 10 to 400% of the thickness of the base plate. If the height is too small, it is difficult to exert the effect of the formation of the reinforcing beads, if it is too large it is not preferable because the volume increases as a whole. More preferred protrusion height may be 30 to 300% of the thickness of the base plate.

In another preferred embodiment, the reinforcing beads,

A planar circular main bead located in the center of the module accommodating portion and receiving a central stress;

Auxiliary beads of planar circular shapes each positioned at the corners of the module housing and relatively smaller in size than the main beads; And

Connection beads extending from the main bead to respective auxiliary beads;

As shown in FIG.

Therefore, it is highly desirable because the stresses are dispersed in all directions by the connecting beads and the auxiliary beads, while receiving the central stress most concentrated by the main beads.

In the above structure, the main bead has a relatively large radius compared to the auxiliary bead in order to effectively accommodate the expansion stress applied in the battery cell or battery module, for example, the radius of the main bead is 1.5 of the radius of the auxiliary bead To 10 times.

The present invention also provides a battery module assembly comprising the base plate for the battery module assembly.

The battery module assembly,

Two or more battery modules including two or more plate-shaped battery cells vertically stacked so that the electrode leads are aligned in one direction; And

An upper cover plate including sidewalls bent downward on both sides of the electrode terminal of the battery module and fixed on the base plate to form an upper surface of the module assembly;

.

In other words, it is possible to facilitate the stable fixing of the battery module and the mounting and fixing of the component parts, such as the upper cover plate, it is possible to achieve the effect of increasing the efficiency of the production process and the safety increase.

In one specific example, reinforcing beads protruding toward the battery module may be formed in the upper cover plate.

Specifically, the reinforcing beads of the upper cover plate may preferably have a planar X-shape to improve its rigidity. Therefore, it is possible to effectively prevent deformation of the battery module assembly without including a separate support structure by the reinforcing beads of the base plate and the upper cover plate located at the outermost part of the battery module assembly.

In another specific example, the battery module may further include an electrically insulating module cover mounted on the electrode leads of the battery cell and fastened and fixed to the base plate and the assembly cover.

Therefore, the module cover can protect the electrode leads of the battery cell from external impact, and is made of an electrically insulating material, thereby achieving the effect of electrically separating from the outside.

The module cover, preferably, a first hook (hook) for fixing the cable connected to the electrode terminal of the battery module (hook), a position fixing upward projection to be fixed to the assembly cover, and a second fixed to the battery module It may include a hook.

Specifically, the first hook includes a cable terminal and at least one protrusion that can hold and secure the cable. Accordingly, in the electrical connection with the cable terminal and the cable, it is possible to achieve the effect of preventing the cable terminal and the cable binding portion from moving out or rotating the cable terminal in place. In addition, due to this effect, in the battery module assembly assembly process, it is possible to perform a faster battery module assembly, it is possible to ensure a safer production process.

In addition, the module cover includes a battery module and a second hook which is easily removable, so that the assembly process of the battery module can be performed more quickly in assembling the battery module. In addition, since the module cover is made of a material having a predetermined rigidity, the plate-shaped battery cells stacked inside the battery module may be integrated into one and at the same time may achieve an effect of protecting from an external shock. Furthermore, since the module cover includes an upward protrusion that can be fixed at a predetermined position of the assembly cover, the battery module integrated by the module cover may be seated and fixed integrally with the assembly cover.

The module cover may further include a bushing insert for mounting and fixing to the base plate.

Specifically, the module cover further includes a bushing insert for fastening and fixing together with the upper cover plate and the base plate, and is fastened and fixed by the bushing and the fastening member inserted into the bushing insert. The fastening member may preferably be a bolt, but is not limited thereto.

Accordingly, the battery module integrated with the module cover is stably mounted and fixed to the base plate by the bushing insertion hole, thereby achieving a stable and desired level of self rigidity of the battery module assembly.

In one preferred example, the base plate and the upper cover plate may be a structure that is fixed via a bracket (bracket).

Specifically, one side of the bracket is fixed to the side wall of the base plate, preferably can be coupled by welding, the other side can be coupled to the side wall of the upper cover plate in a fastening manner.

The fastening method with the upper cover plate is preferably a method using self-elastic deformation of the upper cover plate, and forms a protrusion on the side wall of the upper cover plate, and an indentation having a size corresponding to the protrusion is formed on the side wall of the bracket. Formed on, may be a fastening method by combining them.

Preferably, the protrusion and the indentation include fasteners at positions corresponding to each other, and may be fastened to each other as fastening members through the fasteners.

Therefore, the upper cover plate can be easily seated on the bracket by its elasticity, thereby further facilitating the fastening assembly process.

The present invention also provides a device comprising the battery module assembly as a power source, the device specifically, emergency power supply, computer room power supply, portable power supply, medical equipment power supply, fire extinguishing equipment power supply, alarm equipment It may be a power supply device or an evacuation facility power supply device, but is not limited thereto.

Since the structure and fabrication method of such a device are known in the art, detailed description thereof will be omitted herein.

As described above, the base plate for the battery module assembly according to the present invention comprises a structure including a reinforcing bead, while preventing the deformation of the battery module assembly by swelling, while suppressing the volume increase and increasing the efficiency of the production process Can be. In addition, the battery module assembly including the base plate can be assembled in a compact structure, it is possible to stably fix the inner receiving members, and at the same time, to achieve the effect of increasing the safety and efficiency of the production process.

1 is a plan view of a pouch-type battery cell according to an embodiment of the present invention;
2 is a perspective view showing a state in which the battery cell of Figure 1 is mounted on the cartridge frame;
3 is a perspective view illustrating a battery module stacked and assembled by the cartridge frame of FIG. 2;
4 and 5 are perspective views showing the mounting of the module cover to the battery module of Figure 3;
6 is a front view of a module cover according to one embodiment of the present invention;
7 is a front view of a base plate according to one embodiment of the present invention;
FIG. 8 is a perspective view illustrating a bracket mounted on the base plate of FIG. 7; FIG.
9 is a perspective view of a bracket according to one embodiment of the present invention;
FIG. 10 is a perspective view illustrating a battery module seated on a base plate of FIG. 7;
11 is a perspective view of an assembly cover according to one embodiment of the present invention;
12 is a perspective view illustrating a state in which an assembly cover is mounted on an upper surface of the battery module of FIG. 10;
FIG. 13 is a perspective view illustrating a shape in which an upper cover plate is mounted on the base plate of FIG. 7.

Hereinafter, the present invention will be described in detail with reference to the drawings, but the scope of the present invention is not limited thereto.

FIG. 1 is a plan view of a plate-shaped battery cell 10 in which electrode leads 11 and 12 are formed at one end thereof.

Referring to FIG. 1, the battery cell 10 is a plate-shaped battery cell 10 in which electrode leads 11 and 12 are formed at one end thereof. Specifically, the plate-shaped battery cell 10 has a structure in which an electrode assembly (not shown) is built in a pouch-type case 13 of a laminate sheet including a metal layer (not shown) and a resin layer (not shown). Usually this is referred to as a pouch-type battery cell 10.

2 is a perspective view showing a state in which the battery cells 10, 20 are mounted to the cartridge frame 31, Figure 3 is a view of the battery module 100 assembled by the cartridge frames (31-38) A perspective view is shown.

Referring to these figures, the battery cells 10 and 20 are mounted in the cartridge frame 31, and these cartridge frames 31-38 are mounted on the cartridge frame top cover 111 and the cartridge frame bottom cover 112. By bolt fastening (121, 122, 123, 124) is fixed to form one battery module (100). In addition, the electrode leads 11 and 12 of the battery cells 10 and 20 mounted inside the cartridge frames 31 to 38 are aligned to one side of the battery module 100, and the 'c' shaped bus bars 131 and 141 are electrically connected in parallel. In addition, the electrode leads 11 and 12 electrically connected in parallel are connected to the positive terminal 130 and the negative terminal 140, respectively.

4 and 5 are perspective views showing the mounting of the module cover 200 to the battery module 100 of Figure 3, Figure 6 shows a module cover 200 according to an embodiment of the present invention Front view is shown.

Referring to these drawings, protrusions 151 and 152 of a hook structure are formed at both side edges of one side of the battery module 100 in which the module cover 200 is mounted. In addition, a second hook 211 and 212 having a size that fits the protrusions 151 and 152 is formed in the module cover 200 mounted at a corresponding position.

Therefore, this hook structure is a structure that is very easy to remove, in the assembly process of the battery module 100, it is possible to improve the work efficiency.

11 is a perspective view showing an assembly cover according to an embodiment of the present invention.

Referring to FIG. 6 together with FIG. 11, the module cover 200 includes position fixing upward protrusions 251 and 252 which are engaged with and fixed to the assembly cover 500. In addition, the module cover 200 includes a bushing insertion hole 220, and is more firmly fixed through the fastener 523 of the assembly cover 500.

7 is a front view of a base plate according to an embodiment of the present invention, Figure 8 is a perspective view showing a state in which the bracket 400 is mounted on the base plate 300 of FIG. 9 is a perspective view of a bracket 400 according to one embodiment of the present invention.

Referring to these drawings, the base plate 300 is made of a metal plate formed on the upper surface of the receiving portion (301, 302, 303, 304) for mounting the battery modules (not shown). At least a part of the outer circumferential surface of the metal plate, that is, the side walls 330 of the structure bent upwardly opposite to each other is formed, the reinforcing beads protruding toward the battery module in the module housing (301, 302, 303, 304) 340 is formed.

Specifically, the reinforcement bead 340 includes a planar circular main bead 341 positioned at the center of the module accommodating parts 301, 302, 303, and 304 to receive an expansion stress in the center; Planar circular auxiliary beads 342 located at corners of the module accommodating parts 301, 302, 303, and 304, respectively, and smaller than the main bead 341; And connecting beads 343 extending from the main bead 341 to respective auxiliary beads 342; .

At this time, the protruding height h of the reinforcing bead 340 is about 150% of the thickness W of the base plate 300, and the radius R of the main bead 341 is the radius r of the auxiliary bead. The main bead 341 mainly receives the center inflation stress, while interlocking with the connection bead 343 and the auxiliary bead 342 to effectively accommodate the overall inflation stress.

Meanwhile, fastening parts 311, 312, 313, and 134 protruding upward are formed on the bottom surface of the base plate 300. In addition, the bracket 400 is bonded to the side wall 330 of the structure bent upward on the outer circumferential surface of the base plate 300 by welding.

The bracket 400 includes a weld coupling portion 420 welded to the side wall 330 of the base plate 300, indentations 401, 402, and 403 coupled to the upper cover plate (not shown) in a fastening manner. Fasteners 411, 412, and 413 formed in the indents 401, 402, and 403 are formed.

10 is a perspective view showing a state in which the battery modules 101, 102, 103, and 104 are seated on the base plate 300 of FIG. 7, and FIG. 11 is a perspective view of the assembly cover according to one embodiment of the present invention. There is shown a perspective view of the light source 500. In addition, FIG. 12 is a perspective view illustrating a state in which an assembly cover is mounted on the top surface of the battery module of FIG. 7.

Referring to FIGS. 6 to 8, the battery modules 101, 102, 103, and 104 are respectively seated in the module receiving portions 301, 302, 303, and 304 of the base plate 300. The seated battery modules 101, 102, 103, 104 are mounted and fixed by the assembly cover 500.

Specifically, the fasteners 512 and 540 of the assembly cover 500 are fastened and fixed to the upwardly projecting fasteners 321 and 322 of the base plate 300 formed at a position corresponding thereto.

The upward protrusions 251 and 252 are engaged with the fastening fasteners 521 and 522 of the assembly cover 500 on the upper surface of the module cover 200 of the battery modules 101, 102, 103 and 104. Is formed. These fastening fasteners 521, 522 allow the battery modules 101, 102, 103, 104 to be mounted in place of the assembly cover 500.

The battery modules 101, 102, 103, and 104 seated and fixed in position by this method may include a bushing (not shown) mounted in the bushing insertion hole 220 and the bushing insertion hole 220 formed in the module cover 200. Is fixed again by bolting). Specifically, the bolt passing through the fastener 523 of the assembly cover 500 and the bushing insertion hole 220 of the module cover 200 is fastened to fasten the fastening fasteners 311, 312, 313, and 134 of the base plate. As a result, the battery modules 101, 102, 103, 104 fixed to the module cover 200 are more firmly fixed.

FIG. 13 is a perspective view illustrating a shape in which the upper cover plate 800 is mounted on the base plate 300 of FIG. 7.

Referring to FIG. 13 together with FIGS. 8 and 9, the upper cover plate 800 is fixed on the base plate 300 to form an upper surface of the module assembly, and the side walls 810 that are bent downward on opposite outer peripheral surfaces thereof. ) And is coupled by a bracket 400 mounted to the base plate 300.

The upper cover plate 800 protrudes toward the battery module 101, 102, 103, 104, and is formed with a planar X-shaped reinforcement bead 820 on the outer surface to improve its rigidity, and along the outer circumferential edge thereof. A plurality of vents 830 are formed.

Meanwhile, the upper cover plate 800 includes indents 401, 402, 403 and protrusions 811, 812, 813 formed in the bracket 400. These protrusions 811, 812, 813 include fasteners 411, 412, 413 of the indents 401, 402, 403, respectively, and fasteners (not shown) that can be fastened by bolts.

The fastening method of the upper cover plate 800 and the bracket 400 uses the elastic deformation of the upper cover plate 800, so that the upper cover plate 800 is easily fixed to the bracket 400 by its elasticity. Since it is possible to fasten, through this fastening assembly process can be made easier.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

Claims (23)

One or more battery modules are mounted on the module housing is formed on the upper surface, the side wall of the structure is bent upwardly formed on at least a portion of the outer peripheral surface of the plate, the reinforcement protruding toward the battery module A base plate for a battery module assembly, characterized in that the beads are formed. The base plate of claim 1, wherein the battery cell is a rectangular secondary battery or a pouch secondary battery. The base plate of claim 2, wherein the pouch type secondary battery has a structure in which an electrode assembly is sealed in a laminate sheet including a resin layer and a metal layer. According to claim 1, wherein the battery cells in the battery module base plate for the battery module assembly, characterized in that connected in parallel. 5. The base plate of claim 4, wherein the parallel connection is achieved by a 'B' shaped or a 'B' shaped busbar. The base plate of claim 1, wherein the battery cells are fixed to a cartridge frame, and the battery module has a stack structure of cartridge frames. The base plate for a battery module assembly according to claim 1, wherein the plate is a metal plate. The assembly of claim 1, wherein two or more battery modules are mounted on the base plate, and are plate-shaped members mounted on the top surfaces of the battery modules and fastened to the battery modules, and including a cable fixing part for fixing a cable. A base plate for a battery module assembly, characterized in that it further comprises a cover (assembly cover). The base plate of claim 8, wherein the battery modules are provided with fasteners for fastening with the assembly cover. The base plate of claim 1, wherein the protruding height of the reinforcing beads is 10 to 400% of the thickness of the base plate. The method of claim 1, wherein the reinforcing beads,
A planar circular main bead located in the center of the module accommodating portion and receiving a central stress;
Auxiliary flat beads each positioned at a corner of the module accommodating portion and having a relatively smaller size than the main beads; And
Connecting beads extending from the main bead to respective auxiliary beads;
Base plate for a battery module assembly comprising a. 12. The base plate of claim 11, wherein a radius of the main bead is 1.5 to 10 times a radius of the auxiliary bead. A battery module assembly comprising a base plate for a battery module assembly according to any one of claims 1 to 12. The method of claim 13, wherein the battery module assembly,
Two or more battery modules including two or more plate-shaped battery cells vertically stacked so that the electrode leads are aligned in one direction; And
An upper cover plate including sidewalls bent downward on both sides of the electrode terminal of the battery module and fixed on the base plate to form an upper surface of the module assembly;
Battery module assembly comprising a. The battery module assembly according to claim 14, wherein the upper cover plate is provided with reinforcing beads protruding toward the battery module. The battery module assembly according to claim 15, wherein the reinforcing beads of the upper cover plate have a planar X shape. 15. The battery module assembly according to claim 14, wherein the battery module further comprises an electrically insulating module cover mounted on the electrode leads of the battery cell and fastened and fixed to the base plate and the assembly cover. The method of claim 17, wherein the module cover, the first hook (hook) for fixing the cable connected to the electrode terminal of the battery module (hook), the position fixing upward projection to be fixed to the assembly cover, and fixed to the battery module A battery module assembly comprising a second hook. 18. The battery module assembly of claim 17, wherein the module cover further comprises a bushing insert for mounting and fixing to the base plate. 15. The battery module assembly of claim 14, wherein the base plate and the top cover plate are fixed via a bracket. 21. The battery module assembly according to claim 20, wherein the bracket is coupled to the side wall of the base plate by a welding method and the other side is coupled to the side wall of the upper cover plate by a fastening method. A device comprising the battery module assembly according to claim 13 as a power source. The device according to claim 22, wherein the device is an emergency power supply, a computer room power supply, a portable power supply, a medical power supply, a fire extinguishing power supply, an alarm power supply, or an evacuation power supply.

Images