1]The present invention is a pouch as cells of one another battery module that movement can be prevented in, more specifically, each of the pair of the pouch cell pouch cell between the coupling so that the movement can be prevented in each other contained in the cell cartridge It relates to a battery module having the structure.
[2]This application claims priority to an application on the Korea Patent Application No. 10-2017-0096809, filed as 07 31st, 2017, all contents disclosed in the specification and drawings of that application are incorporated in this application by reference.
BACKGROUND
[3]
Conventional battery module, according to fix the stacked body composed by laminating a plurality of battery cells by using the end plate to cover the large amount of surface of the laminate body to press both sides of the laminate parallel to the stacking direction of battery cells along the direction it was only have a structure for preventing the battery cells moving.
[4]
However, this conventional battery module structure, would have to be vulnerable to movement in a direction perpendicular to the stacking direction of the battery cells. This is because the flow of the battery cell can be generated by the fine space between the inner wall of a module case for accommodating the battery cells and the battery cells.
[5]
Thus, in the case where the flow of the battery cells occurs within a module case, there is a problem that is in the process of using the battery module can be damaged battery cell occur, due to safety and reliability degradation products therefrom.
[6]
Thus, the application of a binding structure that allows within the battery module can be prevented from flowing to the battery cell in a vertical direction and the stacking direction of the battery cells are required.
Detailed Description of the Invention
SUMMARY
[7]
The invention, as conceived in consideration of the above problems, to provide a coupling structure in the battery module in the stack in a direction normal to the direction of the pouch cell to prevent the pouch cells are flowing into one object.
[8]
However, the technical problem to be solved by the present invention may be clearly understood to those skilled in the art from the description of the invention described below is not limited to the above-described problems, that are not mentioned yet another task are.
Problem solving means
[9]
Cell cartridge according to an embodiment of the present invention for solving the aforementioned technical problem, the first cell of the pouch having a first fixing portion extending outward sealing portion; Second pouch cell with a second fixing portion extending in a lateral sealed portion; And the first pouch cell and the second pouch cell cartridge for accommodating the cell stack are stacked is formed; wherein the said first fixing portion is bent in a direction toward the second pouch cell movement of the second pouch cells the limit, and the second fixing portion is bent in towards the first pouch cells direction restricts movement of the first pouch cell.
[10]
The first fixing and the second fixing portion may be provided with a plurality of each.
[11]
A plurality of first fixing part is provided spaced apart from each other along the periphery of the first pouch cells, a plurality of the second fixing portion may be provided spaced apart from each other along the periphery of the second pouch cell.
[12]
Said first fixing portion is formed in an area excluding the area of ​​the electrode leads of the first pouch cells drawn out, the second fixing portion may be formed in an area excluding the area of ​​the electrode leads of the second pouch cell withdrawal.
[13]
The first fixing and the second fixing portion may be disposed alternately along the periphery of the cell stack.
[14]
It said first fixing portion is extended to the receiving portion of the second pouch cell is attached to said second pouch cell, the second fixing portion is extended to the receiving portion of the first pouch cells can be attached to the first pouch cells have.
[15]
The first and may be government and second fixing parts each formed with a sealing portion integrally with the sealing part and the second pouch cells of said first pouch cell.
[16]
On the other hand, the battery module according to an embodiment of the present invention, the cell cartridges stacked one embodiment the cell cartridge according to the embodiment of the present invention is formed by a plurality of laminate; And a pair of end plates which cover both sides of the cell stack body cartridge; and a.
Effects of the Invention
[17]
According to the invention, a pair of, and allows the pouch cell can the be prevented in the cartridge to move along the laminating direction normal to the direction of the pouch cell, whereby a pair of pouch cells from the pouch cells damaged by the movement of each other in the cartridge and it is possible to reduce the risk of use battery module and a battery module according defects.
Brief Description of the Drawings
[18]
Intended to illustrate the following figures attached to the specification are exemplary of the invention, the components which serve to further understand the spirit of the invention and together with the description of which will be described later invention, the details of this invention is described in such figures be construed as limited only is not.
[19]
1 is a perspective view showing a completed battery module according to an embodiment of the present invention.
[20]
2 is an exploded perspective view of a battery module according to an embodiment of the present invention.
[21]
3 is an exploded perspective view of a cell cartridge according to an embodiment of the present invention.
[22]
4 is a plan view of a first pouch cell applied to the present invention.
[23]
5 is a plan view of the second pouch cell applied to the present invention.
[24]
Figure 6 is a perspective view that appear to claim the one pouch cell and the second cell is a pouch coupling conditions as applied to the present invention.
[25]
7 is a perspective view that appear to claim the one pouch cell and the second cell is a pouch coupling conditions as applied to the present invention, from the one shown in Figure 6 is a perspective view showing another form of coupling.
Mode for the Invention
[26]
With reference to the accompanying drawings will be described a preferred embodiment of the present invention; Prior to this, the specification and are should not be construed as limited to the term general and dictionary meanings used in the claims, the inventor accordingly the concept of a term to describe his own invention in the best way It interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that can be defined. Accordingly, the configuration shown in the examples and figures disclosed herein are in not intended to limit the scope of the present merely nothing but a preferable some embodiments of the present invention invention, a variety that can be made thereto according to the present application point It should be understood that there are equivalents and modifications.
[27]
[28]
First, in Figure illustrating the overall structure of a battery module according to the first to one embodiment of the present invention with reference to FIG. 3 for example.
[29]
1 is a perspective view completion showing a battery module according to an embodiment of the present invention, Figure 2 is a cell in accordance with one embodiment of the exploded perspective view, and the FIG. 3 showing a battery module according to an embodiment of the present invention invention an exploded perspective view of the cartridge.
[30]
1 to 3, of a battery module in accordance with one embodiment of the present invention, are a plurality of cell cartridge 100 is stacked covering the both surfaces of the cell cartridge laminate and a cell cartridge laminate formed pairs It includes an end plate (200, 300).
[31]
The cell cartridge 100, and a pair of pouch cells 10 and 20 the cartridge 50 which is accepted by the cell stack and formed laminate, said cartridge (50) face one side of the cell stack from a second cartridge 40 to be coupled from the other side face of the first cartridge 30 and the cell stack are coupled.
[32]
On the other hand, the pair of the first cartridge 30 and the second cartridge 40, and end plates (200 300) constituting the cell cartridge 100 is provided with a coupling hole (H) formed at the upper end both side corner area, do. By inserting the bolt (B) to these fastening holes (H) it is made of a fastening between the first cartridge 30 and the second connection between the plurality of cartridges 40, a cell cartridge 100. On the other hand, a pair of end plates (200 300) each bottom center, the fastening clip (C) is equipped can be held more firmly the coupling force between the end plate (200 300).
[33]
Further, this bolt (B) fastening between and clip (C) the cell cartridges stacked body and the end plate (200 300) by a fastening with, and be also achieved, so that by the end plate (200 300) urges the cell cartridge stack body a plurality of thereby preventing the movement between the cell cartridge 100 occurs.
[34]
In the drawings of the present invention, the only the case that contains the three cells cartridge 100 into one of the battery modules are illustrated, and thus not necessarily to which the present invention is limited, the less number according to the voltage and / or capacity of the required battery or more is applied to a large number of cell cartridge 100 that is a matter of course.
[35]
[36]
The following is, as will be with reference to Figures 4-6 in conjunction with Figure 3, illustrating in more detail with respect to a cell cartridge 100 according to an embodiment of the present invention.
[37]
Figure 4 is a plan view of a first pouch cell applied to the present invention, Figure 5 is a plan view of the second pouch cell applied to the present invention, Figure 6 is a first pouch cell and the second pouch cell applied to the present invention It is a perspective view that appear the coupled state.
[38]
3 to 6, the first pouch cells 10 constituting the cell cartridge 100, an electrode assembly (not shown), the electrode lead (11) of the pair, the pouch case 12 and a plurality and including a first fixing portion (15).
[39]
Although not shown in the drawing, the electrode assembly, having a form in which a separator interposed between the positive electrode plate and negative electrode plates alternately stacked repeatedly, it is preferable that both sides of the separator is positioned for insulation outermost.
[40]
The positive electrode plate is made of a positive electrode active material layer coated on the side positive electrode current collector and at least a day, at one end, the positive electrode uncoated portion area in which the positive electrode active material is not coated is formed, such a positive electrode uncoated portion area electrode lead (15 ) anode is connected to and functions as a tab.
[41]
Similarly, the negative electrode plate is made of a negative electrode active material layer coated on the surface the whole and at least the negative electrode collector one, at one end, the coated portion region is uncoated negative electrode active material layer is formed, this coated portion area electrode lead (15 ) functions as the negative electrode tab connected to.
[42]
Further, the separator is interposed between the positive electrode plate and negative electrode plate from each other, but prevent direct contact between the electrode plates having different polarities, it is made of a porous material to the electrolyte as a medium between the positive electrode plate and negative electrode plate to enable ion migration have.
[43]
The electrode lead 11, it is divided into a negative electrode lead connected to the positive electrode lead and the negative electrode tab connected to the positive electrode tab, and extends in the side-by-side take-off in one direction of the pouch case 12.
[44]
The pouch case 12, can be made to lower case for covering the upper case and the lower portion to cover an upper portion of the electrode assembly, the upper case and the lower case, each consisting of a first resin layer / metal layer / the second resin layer of the multi-layer it may be formed of a film pouch.
[45]
In this case, it may be formed of a resin having a heat-sealable to allow the first forming the outermost inner surface of the pouch film, resin layer, the upper / lower case may be well fused with each other when the application of heat to the abutting state.
[46]
The pouch case 21 is thermally fused into the receiving portion 23 and receiving the extension in the circumferential direction portion of the electrode lead 11 drawn out state for receiving the electrode assembly (not shown), the pouch case 12, sealing the sealing portion 14 which, thus includes two areas.
[47]
The first fixing portion 15, the first pouch cell 10 is provided from the sealing portion 14 in a form extending outwards, the first pouch cell second pouch cells are stacked face to face, and 10 is a bending (20) in a direction toward and limit the movement of the second pouch cell 20.
[48]
The first fixing portion 15 has a plurality, and having the plurality of first fixing portion (15) are the first pouch cell being 10 spaced apart from each other formed along the periphery of the electrode lead 11, a region drawn is It is not formed.
[49]
The second pouch cell 20 includes an electrode assembly (not shown), a pair of electrode leads 21, the pouch case 22 and a plurality of second fixing portion (25).
[50]
With the exception of the first pouch cell 10 and the second pouch cell 20, that the formation positions are different from each other in that as compared with the above-described first pouch cell 10 unit (15, 25), and the remaining configuration elements are substantially the same, so description is repeated for the remaining components except for the second fixing portion 25 will be omitted.
[51]
The second fixing portion 25, the second pouch cell 20, is provided from the sealing portion 24 in a form extending outwards and the second pouch cell first pouch cells are stacked face to face, and 20 ( the banding 10) in a direction toward and limit the movement of the first pouch cell 10.
[52]
The second fixing portion 25 has a plurality, and having a plurality of second fixing portion 25 are the second pouch cells are formed spaced apart from each other along the circumference of the 20-electrode lead 21, the area in which withdrawal is It is not formed.
[53]
Also, the second fixing part 25, a pouch is provided to the first cell 10 and the second pouch when the cells 20 are stacked, the first fixing part 15 is not formed position. Thus, alternately along the periphery of the first fixing portion 15 and the second fixing part 25 has a first pouch cell 10 and the second cell stack that pouch cells 20 are stacked forming body It is arranged.
[54]
Thus, due to the fixed part (15,25) bent towards the cell pouch (20,10) which is located on the other side increases the coupling force between the pair of the pouch cell 10 and 20 the first pouch in the cartridge 50 it is possible to prevent the relative movement between the cell 10 and the second pouch cells 20 mutually not occur.
[55]
The fixing (15,25) is formed by a longer portion extending in the outside of the pouch case 12 and 22 and as being integrally formed, the sealing portions (14,24).
[56]
[57]
Next, with reference to Figure 7, there will be described another example of the coupling type between the pair of the pouch cell 10 and 20 applied to the present invention.
[58]
7 is a perspective view that appear to claim the one pouch cell and the second cell is a pouch coupling conditions as applied to the present invention, from the one shown in Figure 6 is a perspective view showing another form of coupling.
[59]
The cell stack body shown in Figure 7 is substantially the same, except that, the fixing part (15,25) and above compared to the cell-layered product shown in Figure 6 is formed in a longer being attached to the outer surface of the cell stack Do.
[60]
Therefore, in the following description of the cell-layered product shown in Figure 7, to be described to focus on a fixed part (15,25) with the difference, repetitive description of the substantially the same remaining components will be omitted .
[61]
In the present embodiment, the fixing part (15,25) is extended to the receiving portions (13,23) of the pouch cell (20,10) on the other side of each is attached to the receiving portions (13,23) by an adhesive number, and thereby to prevent the pair of the pouch cell 10 and 20 further enhance the bonding force in the cartridge 50 of the pouch between the first cell 10 and the relative motion between the two pouch cells 20 mutually occurring can.
[62]
[63]
Referring again to Figure 3, the cell stack is a structure as described above, bonding force strengthening is accommodated in the cartridge 50.
[64]
The cartridge 50 is composed of a second cartridge 40 to be coupled from the other side face of the first cartridge 30 and the cell stack that is coupled from one side of the cell stack, each of the cartridges 30 and 40 are pouch cell lead-out section, which (10, 20) can be accommodated a cell receiving portion 41 and the electrode leads (11,21) to provide the area with a service area that can be drawn out to the outside of the cartridge 50 ( 42) and a.
[65]
When a plurality of cell cartridges 100 are connected, the lead-out section 42, a plurality of pouch cells in series, parallel, or series and parallel, the battery modules connected in a mixed form by the drawn out electrode lead connected to each other by It can be implemented.
[66]
[67]
The present invention in the above Although the detailed description and specific examples, the invention is not limited by this is described below with the teachings of the present invention by one of ordinary skill in the art available are various changes and modifications within the equivalent scope of the claims. FIG.

Claims

[Claim 1]The first cell of the pouch having a first fixing portion extending in a lateral sealed portion; Second pouch cell with a second fixing portion extending in a lateral sealed portion; And the first pouch and the second cell cartridges accommodating the cell stack is formed pouch cells are stacked; Includes the first fixing portion is bent to the second is bending the pouch cells in a direction toward the second pouch cell restrict the movement, and the second fixing part of the head of the first pouch cell direction of the first cell cartridge to limit movement of the pouch cell.
[Claim 2]
The method of claim 1, wherein the first fixing portion and a second fixing part, characterized in that the cell cartridges each of which is provided a plurality.
[Claim 3]
The method of claim 2, wherein the plurality of first fixing part being provided with spaced apart from each other the first is provided spaced apart from each other along the periphery of one pouch cell, a plurality of the second fixing portion along the periphery of the second pouch cells cell cartridge.
[Claim 4]
The method of claim 3, wherein the first fixing portion is formed in the region except for the take-off area, the electrode leads of the first pouch cell, the second fixing part region except for the region of the electrode leads of the second pouch cells take- cell cartridge, characterized in that formed.
[Claim 5]
4. The method of claim 3 wherein the first fixing portion and a second fixing part, characterized in that the cell cartridges are arranged alternately along the periphery of the cell stack.
[Claim 6]
The method of claim 1, wherein said first fixing portion is extended to the receiving portion of the second pouch cell is attached to said second pouch cell, the second fixing portion is extended to the receiving portion of the first pouch cell, the first cell cartridge, characterized in that attached to the pouch cell.
[Claim 7]
The method of claim 1, wherein the first fixing portion and a second fixing part, characterized in that each cell cartridge formed integrally with a sealing part of the sealing portion and the second pouch cells of said first pouch cell.
[Claim 8]
The cartridge cell stack body is formed, the cell cartridge is a plurality of stacked according to claim 1; And a pair of end plates which cover both sides of the cell stack body cartridge; The battery module that includes.