KR20130108690A - Coupling member of novel structure and battery module assembly employed with the same - Google Patents

Abstract

PURPOSE: A coupling member is provided to minimize the interference at coupling up and down parts only by a normal tolerance management and to be assembled at a predetermined position by a self-position-determining structure. CONSTITUTION: A plate type coupling member (400) which connects and fixes a base plate and an upper cover plate to each other comprises one or more welding connection parts (420) which is mounted to the base plate; one or more coupling convex parts (401-403) which corresponds to the coupling protrusion of the upper cover plate; a coupling hole (411-413) which is coupled and fixed to the cover plate by the coupling member and is located on the coupling convex parts; and a platelike main body which has a welding coupling part in the lower part and has the coupling convex part on the upper part.

Description

Coupling Member of Novel Structure and Battery Module Assembly Employed with the Same}

The present invention relates to a binding member having a novel structure and a battery module assembly including the same, and more particularly, to a plate-shaped binding member for interconnecting and fixing a base plate and an upper cover plate of a battery module assembly to the base plate. One or more welded joints mounted and welded; One or more fastening indentations corresponding to the fastening protrusions of the upper cover plate; A fastener positioned on the fastening indentation and fastened to the upper cover plate by a fastening member; And a plate-shaped body in which the weld joint is formed at the bottom and the fastening indentation is formed at the top.

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 type of applications using the secondary battery is very diversified due to the advantages of the secondary battery, and it is expected that the secondary battery will be applied to many fields and products from now on.

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.

On the other hand, in assembling the battery modules in the prior art, by laminating a plurality of battery modules by applying a plate for fixing up and down to complete the fixing between the battery modules after fixing them separately in the frame bar, such a The method is causing the overall volume of the battery module assembly to increase. In addition, such a battery module assembly is used a method that is mounted on the top and bottom cover (cover) consisting of a single plate (plate), which covers the plate (covering) and the plate to be covered when the side of the top and bottom cover in contact with each other Interference due to product tolerances between them is not completely covered. Or the situation which is too loose and is difficult for fastening positioning is produced. In addition, due to the difficulty in determining the upper and lower cover and the fastening position consisting of a single plate, there is a risk of causing injury to the assembly worker. In other words, an operator's wound may be caused by a sharp plate edge end during the fastening process for a cover consisting of a single plate.

In addition, when a separate assembly auxiliary structure is used for the assembly process, an additional process by the auxiliary structure is required separately. Moreover, the additional process for these auxiliary structures significantly reduces the efficiency of the entire production process, leading to the disadvantage that the assembled worker must have a skilled working skill in this regard.

Therefore, there is a high need for a technology that can fundamentally solve these problems.

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

The inventors of the present application, through in-depth study and various experiments, by configuring the structure of the fastening indentation, fastening and welding coupling portion corresponding to the fastening protrusion of the upper cover plate in the plate-shaped body, covering the top and bottom of the battery module assembly (covering) In the structure, it is intended to develop a binding member with a novel structure that minimizes interference when tightening up and down only with general tolerance management, and has a self-positioning structure so that it can be assembled in place without a separate assembly auxiliary structure. It was.

Accordingly, an object of the present invention, to achieve the effect of increasing the efficiency of the production process by easily achieving the upper and lower covering structure without the configuration of additional components, and to allow the top cover plate to be fixed and fixed to the base plate, The present invention provides a binding member having a novel structure and a battery module assembly including the same, which can achieve an effect of increasing the efficiency of a production process and preventing an injury of an assembly worker.

The binding member according to the present invention for achieving this object is,

A plate-shaped binding member for connecting and fixing the base plate and the top cover plate of the battery module assembly,

One or more welding coupling parts mounted on the base plate and welded to each other;

One or more fastening indentations corresponding to the fastening protrusions of the upper cover plate;

A fastener positioned on the fastening indentation and fastened to the upper cover plate by a fastening member; And

A plate-shaped body in which the weld joint is formed at the bottom and the fastening indentation is formed at the top;

As shown in FIG.

Therefore, the binding member according to the present invention includes a welded joint, a fastening indentation, a fastener, and a plate-shaped body of a specific structure, and thus, in the upper and lower covering structures of the battery module assembly, interference during vertical fastening only by a general level of tolerance management Minimized, and in addition to having its own positioning structure can be assembled in place without a separate assembly auxiliary structure.

In addition, the binding member according to the present invention, so that the upper and lower covering structure can be easily achieved without the configuration of additional components to achieve the effect of increasing the efficiency of the production process, so that the upper cover plate can be mounted and fixed stably with the base plate Thus, the effect of increasing the efficiency of the production process and the prevention of injury of the assembly worker can be achieved together.

In one preferred example, the binding member is composed of a metal plate containing a predetermined elasticity, which can be produced by a press molding method. In addition, the upper cover plate may also be made of a metal plate containing a predetermined elasticity.

Therefore, when the fastening protrusion of the upper cover plate is coupled to the indentation of the corresponding fastening member, it can be stably and easily engaged by deformation and restoration by self elasticity.

As defined above, the binding member may include a weld joint, and the weld coupling may be fixed to the base plate weld. The fixing method is not particularly limited as long as it can firmly fix the weld joint from the base plate in response to vibrations and shocks from the outside, but may be fixed by spot welding, for example.

The base plate welding part may be a structure formed of a hmming shape that is bent inwardly.

Since the humming shape of the base plate is more than twice as rigid as other parts of the single plate, it is possible to more firmly fix the welded binding member. In addition, since the humming shape includes rounded corners, the assembly process operator can provide an effect of preventing a safety accident such as a wound caused by a sharp edge.

The fastening indentation may be, for example, a structure that is formed to a depth of 1.5 times to 20 times the depth of the upper cover plate, preferably 2 to 10 times the depth.

In addition, the fastening indentation may be a structure extending in the height direction of the plate-shaped main body so that the protrusion of the upper cover plate can be seated while sliding in the vertical direction.

In one preferred embodiment, the protrusion of the upper cover plate may be a structure formed in a hemispherical shape corresponding to the depth of the engagement indentation so that it can be reliably seated or detached while sliding on the engagement indentation of the binding member. have.

Therefore, the indentation forms a width corresponding to the width of the protrusion so that the protrusion of the upper cover plate can move only in the vertical direction, and the seating portion corresponding to the depth of the fastening indentation is formed, so that the upper cover plate is correctly positioned. In addition to this, it is possible to perform a fast and safe assembly process.

In addition, the protrusion of the upper cover plate may preferably have a structure of a humming shape bent in the inner direction.

This humming-shaped structure, as described above, has twice as rigid as other parts consisting of a single plate. Therefore, the upper cover plate fixed to the base plate by the binding member can be more firmly fixed. In addition, since the humming shape includes rounded corners, the assembly process operator can provide an effect of preventing a safety accident such as a wound caused by a sharp edge.

The plate-shaped body may have a structure including one or more grooves, which are preferably formed in the longitudinal direction, so as to secure its rigidity.

The groove may be, for example, a structure that is formed to a depth of 1.5 times to 20 times the thickness of the plate-shaped body.

Specifically, the groove may be formed by press molding or bending molding, and the groove-forming binding member may effectively withstand external vibration and impact applied in a direction perpendicular to the groove direction. Furthermore, when the binding member including the groove is welded to the base plate, the product itself has a higher rigidity, thereby producing a more stable and robust product in constructing the entire battery module assembly.

In one preferred example, the plate-shaped body may be a structure that includes one or more fasteners at each end portion so as to be fastened and fixed to the base plate.

Specifically, the plate-shaped body may be fixed through fasteners formed on both ends after being coupled with the base plate to the weld joint. Since such fasteners can be a means of engaging with another embedded part, it is possible to further increase its rigidity without additional additional members and to perform a fastening engagement with other internal parts.

The size of the plate-shaped body may be a structure having a length of 30% to 120% of the length of the base plate, so as to achieve ease in the binding process with the upper cover plate and at the same time have a firm fixing effect, preferably It may be a structure having a length of 90% to 100%.

In another preferred embodiment, the binding member according to the present invention,

A plate-shaped binding member for connecting and fixing the base plate and the top cover plate of the battery module assembly,

One or more welding coupling parts mounted on the base plate and welded to each other;

One or more fastening indentations corresponding to the fastening protrusions of the upper cover plate;

A fastener positioned on the fastening indentation and fastened to the upper cover plate by a fastening member; And

A plate-shaped body in which the weld joint is formed at the bottom and the fastening indentation is formed at the top;

It may be a structure that includes.

Since this binding member can easily achieve the upper and lower covering structure without the configuration of additional parts, it is possible to achieve the effect of increasing the efficiency of the production process, and the upper cover plate can be mounted and fixed stably with the base plate, In addition to increased efficiency, it is possible to provide the effect of preventing assembly workers from injury.

The present invention also provides a battery module assembly including at least one of the binding members, and a device including the battery module assembly as a power source, the device specifically comprising an emergency power supply device, a computer room power supply device, a portable power supply device. It may be, but is not limited to, a medical power supply, a fire extinguishing power supply, an alarm power supply, or an evacuation power supply.

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 binding member according to the present invention, in the upper and lower covering structure of the battery module assembly by constituting the structure of the fastening indentation, the fastening portion and the welding coupling portion corresponding to the fastening protrusion of the upper cover plate in the plate-shaped body In addition, it is possible to assemble in-situ without additional assembly auxiliary structure by minimizing interference when tightening up and down only by general tolerance management, and having its own positioning structure. In addition, it is possible to easily achieve the upper and lower covering structure without the configuration of additional components to achieve the effect of increasing the efficiency of the production process, and to ensure that the upper cover plate can be fixed and fixed to the base plate, increasing the efficiency of the production process In addition, it can provide the effect of preventing the injury of the assembly worker.

1 is a perspective view of a binding member according to one embodiment of the present invention;
2 is a perspective view showing a state in which the binding member of FIG. 1 is mounted on a base plate;
3 is a perspective view illustrating a battery module mounted on a base plate of FIG. 2;
4 is a perspective view illustrating a state in which an assembly cover is mounted on an upper surface of the battery module of FIG. 3;
FIG. 5 is a perspective view illustrating a cable mounted on the top of the assembly cover of FIG. 4; FIG.
FIG. 6 is a perspective view illustrating a state in which an upper cover plate is mounted on the base plate of FIG. 2; FIG.
7 is a vertical cutaway view showing a state in which the binding member and the base plate are bound according to the present invention.

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.

1 is a perspective view of a binding member 400 according to an embodiment of the present invention, Figure 2 is a binding member 400 is mounted on the base plate 300 according to an embodiment of the present invention A perspective view of a state is shown.

Referring to these drawings, the binding member 400 may be welded to the side wall 330 of the base plate 300, the welding coupling portion 420, the indentations coupled to the upper cover plate (not shown) in a fastening manner 401, 402, 403 and fasteners 411, 412, 413 formed in each of the indentations 401, 402, 403.

The base plate 300 is provided with accommodating parts 301, 302, 303, and 304 for mounting battery modules (not shown). In addition, the binding member 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.

3 is a perspective view illustrating a state in which the battery modules 101, 102, 103, and 104 are seated on the base plate 300 of FIG. 2, and FIG. 4 illustrates the battery modules 101, 102, and 103 of FIG. 3. , 104 is a perspective view showing a state in which the assembly cover 500 is mounted on the top surface.

Referring to these drawings in conjunction with FIG. 2, the battery modules 101, 102, 103, and 104 are seated in the module accommodating parts 301, 302, 303, and 304 of the base plate 300, respectively. The seated battery modules 101, 102, 103, 104 are mounted and fixed by the assembly cover 500.

FIG. 5 is a perspective view showing a state in which cables 610, 620, 630, and 640 are mounted on the assembly cover 500 of FIG. 4.

Referring to FIG. 5, power cables 610 and 620, a voltage detecting cable 640, and a communication cable 630 are fixed to the top of the assembly cover 500.

In addition, the rear center portion 340 of the base plate 300 is equipped with a BMS (not shown), the connection terminal 642 of the voltage detection cable 640 and the communication cable (not shown) of the BMS terminal (not shown) The connection terminal 632 of 630 is connected.

The plug-in connector 700 of the housing structure, in which the ends of the power cable 610 and the communication cable 630 are assembled, is mounted at the center of the front part of the base plate 300.

FIG. 6 is a perspective view illustrating a state in which the upper cover plate 800 is mounted on the base plate 300 of FIG. 2, and FIG. 7 binds the binding member 400 and the base plate 300 according to the present invention. A vertical cutaway view is shown showing the appearance.

Referring to these drawings in conjunction with FIGS. 1 and 2, the top cover plate 800 includes a downwardly curved sidewall 810 and is coupled by a binding member 400 mounted to the base plate 300.

Specifically, the upper cover plate 800 includes indents 401, 402, 403 and protrusions 811, 812, 813 formed in the binding member 400. These protrusions 811, 812, and 813 are respectively fasteners 411, 412, 413 of the indents 401, 402, 403 and fasteners 411, 412, 413 that can be fastened by bolts, respectively. Include.

The fastening method of the upper cover plate 800 and the binding member 400 uses the elastic deformation 816 of the upper cover plate 800, so that the upper cover plate 800 is attached to the binding member 400 by its elasticity. Since the fastening method can be easily seated in place, it can be made easier through the fastening assembly process.

In addition, the weld 335 of the side wall 330 of the base plate 300 is formed in a humming shape 335 that is bent inwardly, and the end 815 of the side wall 810 of the upper cover plate 800 is also inner. It is molded into a humming shape 815 bent in the direction.

Accordingly, the upper cover plate 800 may be more easily fastened to the binding member 400, and the safety accident of the assembly worker may be prevented by the humming shapes 335 and 815 having the rounded ends.

On the other hand, the upper cover plate 800 has a reinforcing bead 820 is formed on the outer surface for improving its rigidity, a plurality of vents 830 are formed along the outer peripheral surface edge.

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 (17)

A plate-shaped binding member for connecting and fixing the base plate and the top cover plate of the battery module assembly,
One or more welding coupling parts mounted on the base plate and welded to each other;
One or more fastening indentations corresponding to the fastening protrusions of the upper cover plate;
A fastener positioned on the fastening indentation and fastened to the upper cover plate by a fastening member; And
A plate-shaped body in which the weld joint is formed at the bottom and the fastening indentation is formed at the top;
Bonding member comprising a. The binding member according to claim 1, wherein the binding member is made of a metal plate having elasticity. The binding member according to claim 1, wherein the binding member is produced by a press molding method. 2. The binding member according to claim 1, wherein the weld joint is fixedly mounted by spot welding with the base plate. The method of claim 1, wherein the base plate comprises a base plate welded portion that is joined by welding and the welding coupling portion of the binding member, the base plate welded portion is characterized in that it has a hmming shape bent in the inner direction Binding member to do. The fastening member according to claim 1, wherein the fastening indentation portion is formed to a depth of 1.5 to 20 times the thickness of the upper cover plate. The fastening member according to claim 1, wherein the fastening indentation portion is formed to extend in the height direction in the plate-shaped main body portion so that the protrusion of the upper cover plate slides in the vertical direction. The binding member of claim 1, wherein the protrusion of the upper cover plate has a humming shape bent inward. The method of claim 1, wherein the protrusion of the upper cover plate is formed in a hemispherical shape corresponding to the depth of the engagement indentation so as to be seated or detached while sliding on the engagement indentation of the binding member. absence. The binding member according to claim 1, wherein the plate-shaped main body includes at least one groove formed in the longitudinal direction so as to secure its rigidity. 11. The binding member according to claim 10, wherein the groove is formed at a depth of 1.5 to 20 times the thickness of the plate-shaped body. The binding member according to claim 1, wherein the plate-shaped main body includes at least one fastener at each end thereof so as to be fastened to the base plate. The binding member according to claim 1, wherein the plate-shaped body has a length corresponding to the length of the base plate. A plate-shaped binding member for connecting and fixing the base plate and the top cover plate of the battery module assembly,
One or more welding coupling parts mounted on the base plate and welded to each other;
One or more fastening indentations corresponding to the fastening protrusions of the upper cover plate;
A hook groove positioned on the fastening indentation and capable of engaging with an upper cover plate in a hook manner; And
A plate-shaped body in which the weld joint is formed at the bottom and the fastening indentation is formed at the top;
Bonding member comprising a. A battery module assembly comprising a binding member according to claim 1. A device comprising a battery module assembly according to claim 15 as a power source. The device of claim 16, 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.

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