KR20160050310A - Battery Module Assembly of Improved Safety - Google Patents

Abstract

The present invention relates to a battery module assembly capable of charging and discharging energy by being equipped with a car, and more specifically, to a battery module assembly comprising: a battery module array having a plurality of battery modules being in contact with each other by the sides; a first plate combined with an upper end of the battery module array; a plurality of brackets combined with the first plate and the battery module array and having a first bracket and a second bracket mounted on both ends of the top surface of the first plate and a third bracket mounted on the center of the top surface of the first plate; and a second plate including an accommodation unit to mount a battery management system (BMS) and located in an upper end of the brackets to be combined with the first plate and the brackets.

Description

[0001] The present invention relates to a battery module assembly having improved safety,

The present invention relates to a battery module assembly having improved stability.

BACKGROUND ART [0002] In recent years, rechargeable secondary batteries have been widely used as energy sources for wireless mobile devices. The secondary battery is also attracting attention as a power source for an electric vehicle (EV) and a hybrid electric vehicle (HEV), which are proposed as solutions for the air pollution of existing gasoline vehicles and diesel vehicles using fossil fuels .

In a small mobile device, one or two or more battery cells are used per device, while a middle- or large-sized battery module such as an automobile is used as a middle- or large-sized battery module in which a plurality of battery cells are electrically connected due to the necessity of a large-

Since the middle- or large-sized battery module is preferably manufactured in a small size and weight, a prismatic battery, a pouch-shaped battery, and the like, which can be charged with a high degree of integration and have a small weight to capacity ratio, are mainly used as the battery cells of the middle- or large-sized battery modules. In particular, a pouch-shaped battery using an aluminum laminate sheet or the like as an exterior member has recently attracted a lot of attention due to its advantages such as small weight, low manufacturing cost, and easy shape deformation.

In order for the middle- or large-sized battery module to provide the output and capacity required by a predetermined device or device, a plurality of battery cells must be electrically connected in series or series and parallel manner, and a stable structure against external force must be maintained.

Generally, a high-capacity and high-output battery module assembly composed of a plurality of battery modules has used a method of stacking a plurality of battery cells or battery modules adjacent to each other and fixing them to the base plate. In such a conventional structure, a long bolt and a plurality of fastening means have been used as the structure in which the battery module is fixed to the base plate.

However, when the battery module assembly is excessively impacted, the fastening structure using the long bolt and the fixing bracket may cause a problem in the safety of the battery because the flow may occur in the stacking direction of the battery cell or in the vertical direction from the ground. have. Particularly, the structure for fixing the battery module to the base plate has a structure in which external impact is transmitted as it is structurally, and thus is not stable against external vibration or impact.

Accordingly, there is a high demand for development of a battery module assembly having a new assembly structure for solving the above problems.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art and the technical problems required from the past.

SUMMARY OF THE INVENTION An object of the present invention is to provide a battery module assembly that can securely maintain the fixing structure of the battery module even when an external shock such as advancement or dropping occurs by mounting the battery module together with the bracket at the lower end of the plate, .

According to an aspect of the present invention, there is provided a battery module assembly comprising:

 1. A battery pack comprising a battery module assembly capable of charging and discharging mounted on a vehicle,

A battery module assembly capable of charging and discharging mounted on a vehicle,

A battery module arrangement comprising: a plurality of battery modules arranged side by side;

A first plate coupled to an upper end of the battery module arrangement;

The first and second brackets mounted on both ends of the upper surface of the first plate and the third bracket mounted on the central portion of the upper surface of the first plate, Included brackets; And

A second plate which is located at an upper end of the brackets and is coupled to the first plate and the brackets, the second plate including a receiving portion for mounting a BMS (Battery Management System);

As shown in FIG.

Therefore, since the battery module is attached to the lower portion of the plate together with the bracket, the fixing structure of the battery module can be firmly maintained even with external force.

As one example of the first plate, both ends in the longitudinal direction of the first plate may be downwardly bent so as to form a stepped structure, and first fastening grooves may be formed in a bent lower end portion. Here, the longitudinal direction may mean the direction in which the battery modules are arranged.

Specifically, both ends of the first plate in the longitudinal direction may be bent downward to a length greater than the length of the battery module arrangement.

More specifically, both ends of the first plate may be downwardly bent while being extended to a size of 105% to 140% of the length of the battery module arrangement. That is, both ends of the first plate must be formed to extend to a size of 105% to 140% of the battery module arrangement, so that the area in which the battery module arrangement is mounted can be sufficiently secured and the size of the battery module assembly becomes excessively large Can be prevented.

As one example of the brackets, the first and second brackets may be downwardly bent to have a shape corresponding to the step structure of the first plate, and second fastening grooves may be formed at portions corresponding to the first fastening grooves .

In particular, at least a portion of the downwardly bent end portions of the first and second brackets may include an upwardly bent extension.

More specifically, the upwardly bent extension may be provided with one or more through-holes for lifting the battery module assembly.

As an example of the second plate, both ends of the second plate may be downwardly bent in a shape corresponding to both ends of the first plate, and third fastening grooves may be formed in a bent lower end portion.

According to such a fastening groove structure, the first fastening grooves, the second fastening grooves, and the third fastening grooves may be fastened by bolts / nuts.

A battery pack according to any one of claims 1 to 3, wherein the first plate has a first mounting groove and a second mounting groove formed at both ends of the first plate to mount the battery module arrangement on the first plate, May be formed.

In addition, the first and second brackets and the third bracket may have second mounting grooves formed at portions corresponding to the first mounting grooves.

With such a mounting groove structure, the first mounting grooves and the second mounting grooves may be fastened by bolts / nuts.

As an additional structure of the first plate, beads may be formed in the space between the brackets on the upper surface of the first plate so as to withstand the load due to the mounting of the battery module arrangement.

Meanwhile, the battery modules may have their electrode terminals connected in series or in parallel by a bus bar.

The present invention also provides a battery pack including the battery module assembly.

The present invention also provides a device including the battery pack as a power source.

The device may be selected from an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, or a power storage device. The structure and manufacturing method of such a device are also well known in the art, so a detailed description thereof will be omitted herein.

According to the present invention, the battery pack may be preferably applied to a structure mounted on a lower part of a trunk of a vehicle. In a specific example, the battery pack includes a first plate, a bracket, And the end portions are mounted on the outer circumferential surface of the battery pack receiving portion of the trunk.

As described above, according to the battery module assembly of the present invention, by mounting the battery module together with the brackets at the lower end of the plate, the fixing structure of the battery module is firmly maintained even when an external shock such as advancement or drop occurs There is an effect of improving safety.

1 is a perspective view of a battery module assembly according to one embodiment of the present invention;
Figure 2 is a perspective view of the first plate and brackets of Figure 1;
Figure 3 is an exploded perspective view of the first plate and brackets of Figure 2;
Figure 4 is a perspective view of the first plate, brackets and second plate of Figure 1;
Figure 5 is a side view of Figure 1;
6 is a sectional view of " AB " in Fig.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, but the present invention is not limited by the scope of the present invention.

FIG. 1 is a perspective view of a battery module assembly according to an embodiment of the present invention. FIG. 2 is a perspective view of the first plate and brackets of FIG. 1, FIG. 4 is a perspective view of the first plate, brackets, and second plate of FIG. 1, and FIG. 5 is a side view of the battery module assembly of FIG. 1, Sectional view of " AB " in Fig. 1 is shown.

Referring to these drawings, the battery module assembly 100 includes a battery module assembly 200, a first plate 300, brackets 400, and a second plate 500.

The first plate 200 is mounted on the top of the battery module assembly 200 and the brackets 400 are mounted on the top of the first plate and the second plate 500 is sequentially stacked on the top of the brackets 400 Lt; / RTI >

Specifically, the battery module arrangement 200 includes a plurality of battery modules 210 arranged side by side, and the brackets 400 are arranged on both ends of the first plate 200, 1 bracket 410 and a second bracket 420 and a third bracket 430 mounted on a central portion of the first plate 200.

A storage portion 510 is formed on the upper surface of the second plate 500 to mount a BMS (not shown).

As shown in FIG. 3, the battery module 200 includes a first plate 300, a bracket 400, and a second plate 500. The first plate 300, the brackets 400, And the first fastening grooves 320 are formed in the bent lower end portion 310.

The length L3 between both ends of the first plate 300 is longer than the length L2 of the battery module arrangement 200. [ Specifically, the length L3 between both ends of the first plate 300 is equal to 105% of the length L2 of the battery module arrangement 200.

The first bracket 410 and the second bracket 420 are downwardly bent to have a shape corresponding to the step structure of the first plate 300. The first bracket 420 and the second bracket 420 are bent downward, (Not shown).

The first bracket 410 and the second bracket 420 are formed with vertically upwardly bent extension portions 440 at the downwardly bent ends of the first and second brackets 410 and 420. In the bent extension portion 440, A through hole 441 is formed.

Both ends of the second plate 500 are downwardly bent in a shape corresponding to both ends of the first plate 300, and the third fastening recesses 520 are formed in the bent lower end portions.

The first fastening grooves 320, the second fastening grooves 430 and the third fastening grooves 520 are formed by bolts / nuts (not shown) by the structure of the fastening grooves 320, 430, As shown in Fig.

First mounting grooves 330 are formed at both ends and a central portion of the first plate 300 so that the battery module arrangement 200 can be mounted on the lower end of the first plate 300, The second mounting grooves 450 are formed in the first brackets 410, the second brackets 420 and the third brackets 430 at positions corresponding to the first mounting grooves 330. [

With this structure, the first mounting grooves 330 and the second mounting grooves 450 are fastened together with the battery module assembly 200 by bolts / nuts (not shown).

On the other hand, beads (not shown) are formed on the upper surface of the first plate 300 so as to withstand the load caused by the mounting of the battery module arrangement body 200.

In the battery modules 210, electrode terminals are connected in series / parallel by a bus bar (not shown).

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 (19)

A battery module assembly capable of charging and discharging mounted on a vehicle,
A battery module arrangement comprising: a plurality of battery modules arranged side by side;
A first plate coupled to an upper end of the battery module arrangement;
The first and second brackets mounted on both ends of the upper surface of the first plate and the third bracket mounted on the central portion of the upper surface of the first plate, Included brackets; And
A second plate which is located at an upper end of the brackets and is coupled to the first plate and the brackets, the second plate including a receiving portion for mounting a BMS (Battery Management System);
The battery module assembly comprising: The battery module assembly according to claim 1, wherein both ends of the first plate in the longitudinal direction are downwardly bent to form a stepped structure, and first fastening grooves are formed in bent lower ends thereof. The battery module assembly according to claim 2, wherein both ends of the first plate in the longitudinal direction are bent downward to a length greater than the length of the battery module arrangement. [4] The battery module assembly of claim 3, wherein both ends of the first plate are downwardly bent in a length of 105% to 140% of the length of the battery module arrangement. [3] The apparatus of claim 2, wherein the first and second brackets are downwardly bent in a shape corresponding to the step structure of the first plate, and the second fastening grooves are formed at a portion corresponding to the first fastening grooves A battery module assembly characterized by: The battery module assembly of claim 5, wherein at least a portion of the downwardly bent end portions of the first and second brackets includes an upwardly bent extending portion. [7] The battery module assembly of claim 6, wherein the upwardly bent extension portion is formed with at least one through hole for lifting the battery module assembly. [3] The battery module assembly of claim 2, wherein both ends of the second plate are downwardly bent in a shape corresponding to both ends of the first plate, and third fastening grooves are formed at bent lower ends thereof. The battery module assembly according to claim 5 or 8, wherein the first fastening grooves, the second fastening grooves, and the third fastening grooves are fastened with bolts / nuts. The battery module according to claim 1, wherein first and second mounting grooves are formed at both ends and a central portion of the first plate along a width direction so as to mount the battery module assembly to a lower end of the first plate. Module assembly. The battery module assembly according to claim 10, wherein the brackets are formed with second mounting grooves at portions corresponding to the first mounting grooves. 12. The battery module assembly of claim 11, wherein the first mounting grooves and the second mounting grooves are fastened by bolts / nuts. The battery module assembly according to claim 1, wherein beads are formed on the upper surface of the first plate in a space between the brackets so as to withstand loads due to the mounting of the battery module arrangement. The battery module assembly according to claim 1, wherein the battery modules are connected in series or in parallel with electrode terminals by a bus bar. A battery pack comprising the battery module assembly according to claim 1. A device according to claim 17, comprising a battery pack. 17. The device of claim 16, wherein the device is an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, or a power storage device. 17. The device according to claim 16, wherein the battery pack is mounted under the trunk of the vehicle. 19. The device according to claim 18, wherein the battery pack has both ends of the first plate, the brackets, and the second plate of the battery module assembly mounted on the outer circumferential surface of the battery pack receiving portion of the trunk.

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