KR100921346B1 - Mid-Large Battery Module and Battery Module Assembly - Google Patents

Abstract

According to the present invention, a plurality of cell modules having a structure in which a secondary battery cell ('battery cell') capable of charging and discharging are mounted on a cartridge having an open top surface are sequentially stacked and then covered on a top cartridge body. The present invention provides a medium-large battery module having a structure in which a member ('electrode terminal connection member') for electrical connection of an electrode terminal of a battery cell is mechanically coupled to a front surface.

Description

Medium / Large Battery Module and Battery Module Assembly

1 and 2 are perspective views of a cartridge body and a top cover of a cartridge for a cell module for manufacturing a medium-large battery module according to an embodiment of the present invention;

3 and 4 are schematic views for the process of assembling the battery cell in the cartridge of FIG. 1;

5 is a perspective view of a cell module assembled in the process of FIGS. 3 and 4;

6 is a perspective view of a structure in which two cartridges of FIGS. 1 to 5 are stacked and joined;

7 to 9 are schematic views of various electrode terminal connecting members according to embodiments used in manufacturing a battery module of the present invention;

10 is a schematic diagram of a mounting insulating member for mounting an electrode terminal connecting member in the configuration of a battery module;

11 is an exploded perspective view of a medium-large battery module according to one embodiment of the present invention, and FIG. 12 is a perspective view of the medium-large battery module manufactured as such;

FIG. 13 is a schematic diagram of a structure in which the medium-large battery module manufactured in FIG. 12 is connected in series by using electrode terminal connecting members; FIG.

14 and 15 is a perspective view of a manufacturing process diagram and a completed battery module assembly of a high-output large-capacity battery module assembly manufactured by combining two medium-large battery modules of Figure 13 in the lateral direction;

FIG. 16 is a schematic diagram of a process of attaching a second cartridge body to the first cartridge body in FIG. 4; FIG.

FIG. 17 is an enlarged view of a rear end of a cartridge body capable of performing the process of FIG. 11.

The present invention relates to a medium-large battery module, and more particularly, a plurality of cell modules having a structure in which a battery cell capable of charging and discharging is mounted on a cartridge having an open top surface is sequentially stacked, and then a cover is attached to the top cartridge body. The present invention relates to a medium-large battery module having a structure in which a member for coupling and an electrical connection of an electrode terminal of a battery cell are mechanically coupled to a front surface thereof.

Recently, secondary batteries capable of charging and discharging have been widely used as energy sources of wireless mobile devices. Secondary batteries are also attracting attention as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs), which are proposed as a way to solve air pollution in conventional gasoline and diesel vehicles that use 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 in the future.

One or two or four battery cells are used for small mobile devices, whereas medium and large battery modules, which are electrically connected to a plurality of battery cells, are used in medium and large devices such as automobiles due to the necessity of high output capacity.

Since the medium-large battery module is preferably manufactured in a small size and weight, the rectangular battery, the pouch-type battery, etc., which can be charged with high integration and have a small weight to capacity, are mainly used as battery cells of the medium-large battery module. In particular, a pouch-type battery using an aluminum laminate sheet or the like as an exterior member has attracted much attention in recent years due to advantages such as low weight and low manufacturing cost.

Despite the above advantages, the pouch type battery used as the unit cell of the battery module has some problems.

First, the pouch-type battery has a disadvantage in that electrical connection for the configuration of the module is not easy since the plate-shaped electrode terminals protrude from the top thereof. The connection of the electrode terminals is generally a method of connecting the terminals by welding or the like using a wire, a plate, a bus bar, etc., but the plate-shaped electrode terminals are not easy to work. In general, since a method of welding a plate, a bus bar, or the like to a portion of a plate-shaped electrode terminal by bending is used, skilled technique is required and the work process is complex. In addition, the bonding site is separated by an external impact or the like, and often causes a defect.

Second, the pouch-type battery has a problem in that a number of separate members for maintaining a stable coupling and assembly state in manufacturing a module by stacking a plurality of batteries because the mechanical strength is poor. Accordingly, in manufacturing a pouch type battery as a module, a separate mounting member such as a cartridge for mounting the batteries in one or two or more units is generally used, and the modules are stacked to manufacture the module.

In addition, when configuring a medium-large battery module using a plurality of battery cells, or when configuring a medium-large battery module using a plurality of unit modules consisting of a predetermined number of battery cells, there are generally many for the mechanical fastening and electrical connection thereof Since the members are needed, the process of assembling these members is very complicated. Moreover, space is required for joining, welding, soldering, etc. a plurality of members for mechanical fastening and electrical connection, thereby increasing the size of the entire system.

Furthermore, in the case of a device to which a constant external force such as vibration or shock is applied, such as a vehicle, an increase in contact resistance at an electrical connection portion may cause problems such as unsafe output and short circuit.

Therefore, there is a high need for a technology related to a low mechanical rigidity of the battery cell, preventing a short circuit caused by external force, and the like, and easy to assemble and excellent in structural stability.

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

Specifically, it is an object of the present invention to provide a medium-large battery module having a structure in which the lamination is easy and the electrode terminals are easily connected while effectively compensating the low mechanical rigidity of the battery cell.

Another object of the present invention is to manufacture by a simple assembly method using a cartridge without using a plurality of members for mechanical fastening and electrical connection to reduce the overall manufacturing cost, and to reduce the risk of short circuit or break during operation or operation It is to provide a medium-large battery module having a structure that can be.

Medium and large battery modules according to the present invention for achieving this purpose, after sequentially stacking a plurality of cell modules having a structure in which a secondary battery cell ('battery cell') capable of charging and discharging to a cartridge having an open upper surface The cover is coupled to the uppermost cartridge body, and a member ('electrode terminal connection member') for electrical connection of the electrode terminal of the battery cell is mechanically coupled to the front surface.

Therefore, the medium-large battery module according to the present invention attaches and stacks each of the battery cells to a cartridge having an open top surface instead of a sealed cartridge, and seals the open top surface of the top cartridge with the top cover, thereby reducing the number of members used. By minimizing the number of assembly processes and manufacturing costs, it is possible to manufacture a battery module of a more compact structure. In addition, by connecting the electrode terminal connecting member in a mechanical assembly method without welding or soldering, etc., the manufacturing process is facilitated and it is easy to disassemble as necessary.

The cartridge of the cell module is a cartridge for a cell module that can manufacture a medium-large battery module, and has a rectangular structure corresponding to the battery cell so that a plate-shaped secondary battery cell (battery cell) can be mounted. And an upper cover coupled to an open upper surface of the uppermost cartridge body in a state where the battery cell is mounted, and a plurality of through holes are perforated on the lower surface of the cartridge body, and coupled to another cartridge on one side of the upper side of the side wall of the cartridge body. A fastening protrusion that can be formed is formed, and a fastening groove corresponding to the fastening protrusion is formed on one side of the lower side of the side wall, and the electrode terminal connection member is formed on the electrode terminal of the battery cell on the front surface of the cartridge body. In order to be stably connected, a separate member (mounting insulation member) for mounting the electrode terminal connecting member is provided. It is composed of a coupling portion formed of a structure that can be fastened by a mechanical assembly method.

The plate-shaped battery cell is a secondary battery having a thin thickness and a relatively wide width and length so as to minimize the overall size when the battery cell is charged for the configuration of the battery module. Since the plate-shaped battery cell generates an exothermic reaction during charging and discharging, in order to prevent overheating of the battery cell, it is preferable to perforate a plurality of through holes in a predetermined pattern on the lower surface of the cartridge body to effectively release heat. In addition, the group consisting of the plurality of through-holes (through-hole group) may be punctured spaced at a predetermined interval. At least one or more double-sided adhesive tape for attaching and fixing the cartridge body and the battery cell may be added to the remaining portions except the portion where the through-hole group is located. The battery cell fixed by the double-sided adhesive tape suppresses the movement of the battery cell inside the cartridge against external impact or the like to prevent internal short circuit.

The fastening method of the cartridge bodies may vary, and preferably, fastening recesses for joining with another cartridge body are formed on the top of the rear side wall of one cartridge body so that the cartridge bodies can be coupled to each other without using a separate member. The lower side of the rear side wall may have a structure in which a fastening groove corresponding to the uneven portion is formed. The formation position of the concavities and convexities and grooves for fastening is also possible as opposed to the above structure.

In general, the medium-large battery module is manufactured by stacking a plurality of battery cells with high density, and it is preferable to stack adjacent battery cells at regular intervals so as to remove heat generated during charging and discharging. That is, since a battery cell having a low mechanical rigidity is embedded in a cartridge in one or two or more combinations, and a plurality of such cartridges are stacked to form a battery module, the refrigerant can be effectively removed from the stacked battery cells. It is desirable to secure a flow path of.

In order to secure such a coolant channel, in one preferred example, at least one protrusion may be formed at an upper end of a side wall of the cartridge body to form a coolant channel when another cartridge body is stacked. By the protrusions, the cartridges are spaced at regular intervals, thereby forming a flow path for the flow of the refrigerant.

The cartridge structure is basically configured to stack a plurality of cartridges in a vertical direction, but may further include a structure that overlaps in a lateral direction.

For example, a front surface of the cartridge body may have a structure in which a groove for inserting a member ('binding member') for connecting it in a state where another cartridge body is positioned in a lateral direction is vertically formed. have. Therefore, by combining the binding member of the length approximately corresponding to the height of the cartridge body in the groove of the cartridge body which is sequentially stacked, the cartridge body can be fixed to each other to produce a high output large capacity battery module assembly. .

The material of the cartridge body and the upper cover is not particularly limited as long as the material is electrically insulating and has a predetermined mechanical strength. Examples thereof include a metal coated with an insulating material, an insulating polymer, or a resin composite thereof. However, it is not limited only to these.

In the medium-large battery module of the present invention, the electrode terminal connecting member is preferably a coupling part bent so that a groove is formed at the rear so that the plate-shaped electrode terminal ('battery cell electrode terminal') of the battery cell is inserted and coupled. ('Bent coupler'), an external input / output terminal that is bent to protrude toward the front side, and a voltage detecting terminal that is bent to protrude toward the front side.

The electrode terminal connecting member may be electrically connected to at least two battery cells, and the bent coupling portion and the external input / output terminals are configured to have the same number as the number of battery cells requiring connection. In addition, the electrode terminal connecting member may be formed in a shape according to the position of the battery cells that require connection, for example, is not formed at the same height, such as when two battery cells are stacked up and down. When not, the plurality of bent coupling portion may have a structure that is formed at different heights.

In the battery module according to the present invention in which the battery cells are sequentially stacked, preferably, two bent coupling parts are formed to have a height difference corresponding to the thickness of the battery cell, without using a separate member. The electrode terminals between them can be compactly connected in series and / or in parallel.

In one preferred embodiment, the external input and output terminals are drilled in the fastening groove, thereby facilitating the connection process of the external circuit to the external input and output terminals. For example, when the external circuit is a wire or a cable or the like, soldering or welding may be performed after inserting these ends into the fastening grooves, or the ends of the wires or cables by inserting bolts through the fastening grooves. It can also be mechanically fastened with.

The electrode terminal connecting member is not particularly limited as long as it is a conductive material. For example, the electrode terminal connecting member may be manufactured by bending a nickel plate having a predetermined thickness into a predetermined shape.

In the above-described cell module cartridge, the mounting insulating member is preferably made of a hexahedral structure having a size approximately coincident with the front surface of the cartridge body, and the front end of the cartridge body may be inserted into and coupled to the rear surface. A groove ('cartridge coupling groove') is formed, and a groove ('electrode terminal through hole') is formed on the front surface of the battery terminal to expose the electrode terminal introduced through the coupling groove, and the electrode terminal is formed. The upper portion of the through groove may have a structure consisting of a fastening upper end inserted into the electrode terminal connecting member.

The mounting insulating member serves to electrically insulate electrode terminals of adjacent battery cells, and is made of an electrically insulating material. Preferred examples of such an electrically insulating material include various plastic resins, and are not particularly limited as long as they play the same role as described above.

The mounting insulation member may be fastened to the electrode terminals of the battery cells and the cartridge. As one preferred example, the battery cell is loaded into the cartridge body, and the electrode terminals of the battery cell are disposed at the front end of the cartridge body. After bending down to the coupling portion in close contact with the front end, the front end of the cartridge body is inserted into the cartridge coupling groove in the rear of the insulating member is coupled, the fastening can be made. Furthermore, the electrode terminal (electrode terminal surrounding the front end of the cartridge) inserted into the mounting insulating member can be more firmly coupled when the electrode terminal connecting member is coupled with the mounting insulating member.

The mounting insulating member preferably has a structure in which electrode terminal connection members for electrical connection between battery cells can be easily mounted. For example, a mounting portion for stably mounting an external input / output terminal and a voltage detecting terminal of an electrode terminal connecting member is further formed on a front surface of the mounting insulating member, and a fastening indentation portion is formed on a mounting portion of the external input / output terminal. The electrode terminal of the battery cell exposed to the front through the electrode terminal through groove may be inserted into the rear groove of the bent coupling portion of the electrode terminal connecting member.

Therefore, the fastening upper end of the mounting insulating member and the electrode terminal penetrating the mounting insulating member can be fastened closely to the bent coupling portion of the electrode terminal connecting member, thereby providing stable mounting of the electrode terminal connecting member to the mounting insulating member. Make it possible.

In the medium-large battery module according to the present invention, in order to further improve the stability of the laminated structure, it is preferable to add an elastic one-sided adhesive tape having a predetermined thickness between the cartridge bodies to be stacked. The one-sided adhesive tape fills a space with another cartridge stacked on top of the cartridge, and at the same time, elastically pressurizes the battery cell to help maintain the battery cell in a stable mounting state inside the cartridge. Such one-sided adhesive tape may be one-sided adhesive tape having elasticity while having a predetermined thickness, such as 'sponge'. However, without attaching such one-sided adhesive tape and separately attaching the upper surface of the battery cell, the main body of another cartridge may be configured to directly contact the upper surface of the battery cell.

The present invention also provides a high output large capacity battery module assembly comprising a plurality of the medium and large battery modules.

The method of constructing a battery module assembly by combining the medium and large battery modules may vary. In one preferred example, a plurality of medium and large battery modules are disposed adjacent to each other in a lateral direction, and the battery modules are formed using the above-described binding member. It can be produced by connecting.

The battery module assembly can be applied to a variety of devices because it is possible to vary the combination by electrically connecting the battery modules according to the desired output and capacity. Therefore, in consideration of mounting efficiency, structural stability, etc., the medium-large battery module according to the present invention may have a limited mounting space and may be used as a power source for electric vehicles, hybrid electric vehicles, and the like, which are exposed to frequent vibrations and strong shocks. In particular, it can be preferably used as a power source of an electric vehicle requiring a high output large capacity.

Hereinafter, the present invention will be described in detail with reference to the drawings according to an embodiment of the present invention, but this is for easier understanding of the present invention, and the scope of the present invention is not limited thereto.

1 and 2 are perspective views of a cartridge body and an upper cover of a cartridge for a cell module for manufacturing a medium-large battery module according to an embodiment of the present invention, respectively, and FIGS. 3 and 4 show the cartridge of FIG. A schematic diagram of a process of assembling a battery cell is shown in FIG. 5, and a perspective view of a cell module assembled in such a process is shown in FIG. 5.

Referring to these drawings, the cartridge body 100 has a rectangular structure corresponding to the battery cell 200 so that the plate-shaped battery cell 200 (hereinafter abbreviated as 'battery cell') can be mounted, and has an open top surface. consist of. In addition, in order to prevent overheating of the battery cell 200, a plurality of through holes 120 are drilled in a predetermined pattern on a lower surface 110 to effectively release heat, and through groups of through holes formed of such through holes 120 are provided. 120a is perforated at positions spaced at intervals as large as the size to which the adhesive tape 300 is attached. A plurality of through holes 120 are formed in the upper cover 190, and the through holes 120 form a predetermined pattern in the form of the through hole group 120a.

Fastening protrusions 140 that can be coupled to another cartridge (not shown) protrude from one side of the upper side of the side wall 130 of the cartridge body 100, and the lower side of the side wall 130 for fastening The fastening groove 142 corresponding to the protrusion 140 is formed. In addition, the front surface 150 of the cartridge body 100 is formed with a coupling portion 152 of the structure in which the mounting insulating member 400 can be fastened in an assembly manner.

A plurality of protrusions 160 are formed on an upper side of the side wall 130 of the cartridge body 100 to form a refrigerant flow path when another cartridge body (not shown) is stacked. Cartridges are spaced at regular intervals by the protrusions 160 to form a flow path for the flow of the refrigerant.

In addition, a fastening groove 180 for engaging with another cartridge body is formed at the upper end of the rear side wall 170 of the cartridge body 100, and corresponding to the groove 180 at the lower end of the rear side wall 170. The concave-convex portion 182 for fastening is formed.

The adhesive tape 300 may be different from each other depending on the type attached to the upper and lower surfaces of the battery cell 200. For example, the adhesive tape attached to the upper surface of the battery cell 200 may have a predetermined thickness. The elastic tape having a one-sided adhesive tape showing the adhesiveness on one side, the adhesive tape attached to the lower surface of the battery cell 200 may be a double-sided adhesive tape showing the adhesiveness on both sides.

The process of assembling the cell module will be described with reference to FIGS. 1 to 4 and 5. First, the adhesive tape 300 is attached to the remaining parts of the cartridge body 100 except for the portion where the through-hole group 120a is located. The electrode terminals 210 and 220 of the battery cell 200 are bent downward so as to surround the coupling part 152 at the front end of the cartridge body 100. Then, the mounting insulating member 400 is assembled to the coupling part 152 in which the electrode terminals 210 and 220 are in close contact, and the battery cell 200 is mounted to the cartridge body 100. Finally, the manufacturing of the cell module may be completed by coupling the electrode terminal connecting member 410 for electrical connection to the mounting insulating member 400. However, of course, the process may be changed as necessary.

6 shows a perspective view of a structure in which two cartridges of FIGS. 1 to 5 are stacked and combined.

Referring to FIG. 6, when the second cartridge body 102 is mounted on an upper portion of the first cartridge body 101 having a battery cell therein, fastenings formed on upper ends of both sidewalls of the first cartridge 101 may be used. The protrusions (FIG. 1: 140) and the fastening grooves (FIG. 1: 142) formed at the lower ends of both sidewalls of the second cartridge 102 are mutually coupled, thereby achieving a stable fastening.

This fastening process, as shown in Figure 11, after first coupling the rear end of the second cartridge body 102 to the rear end of the first cartridge body 101, and then tightening the fastening protrusion 140 and the fastening portion while rotating the front portion downwards The grooves 142 are coupled to each other.

Specifically, as shown in FIG. 12, the fastening recessed portion 180 is formed at the upper end of the rear side wall of the first cartridge body 101, and the fastening recessed portion is formed at the lower end of the rear side wall of the second cartridge body 102. A fastening groove 182 corresponding to 180 is formed. Accordingly, when the rear end of the second cartridge body 102 is pushed into the rear end of the first cartridge body 101, the fastening convex and concave portions 180 are coupled to the groove 182, thereby achieving stable mounting.

Referring back to FIG. 6, when the second cartridge body 102 is mounted on the upper portion of the first cartridge body 101, protrusions formed on upper ends of both sidewalls 130 of the first cartridge body 101 are provided. By the 160, the refrigerant passages 162, 164, 166 are formed by spaced apart between the two cartridge bodies 101, 102 at predetermined intervals, and the refrigerant passages 162, 164, 166 are filled by the refrigerant passages 162, 164, 166. It is possible to effectively cool the heat generated in the battery cell during discharge.

7 to 9 schematically illustrate various electrode terminal connecting members according to the embodiments used in manufacturing the battery module of the present invention, and FIG. 10 illustrates the mounting of the electrode terminal connecting member when the battery module is configured. A mounting insulating member is schematically shown.

For convenience of understanding, the electrode terminal connecting member 500a of FIG. 7 is referred to as a 'A type connecting member', the electrode terminal connecting member 500b of FIG. 8 is referred to as a 'B type connecting member', and the electrode of FIG. 9. The terminal connecting member 500c is referred to as a 'C type connecting member'.

Referring to these drawings, the electrode terminal connecting members 500a, 500b, and 500c may have grooves 540a, 540b, at the rear end thereof so that electrode terminals (eg, anode terminals) of a battery cell (not shown) may be inserted and coupled. Bending coupling parts 520a, 520b, and 520c that are bent to form 540c, external input / output terminals 510a, 510b, and 510c that are bent to protrude toward the front side, and voltage detecting terminals that are bent to protrude toward the front side. 530a, 530b, and 530c.

The external input / output terminals 510a, 510b and 510c and the voltage detection terminals 530a, 530b and 530c are bent in parallel with the front surface.

The bending coupling parts 520a, 520b, and 520c and the external input / output terminals 510a, 510b, and 510c are formed by the number of battery cells to be electrically connected. For example, the electrode terminal connecting member as shown in FIG. The 500b includes two bent coupling parts 520b and 521b and two external input / output terminals 510b and 511b to connect the electrode terminals of the two battery cells in parallel or in series. Further, the bent coupling portions 520b and 521b are formed with height differences corresponding to the thicknesses of the battery cells, and external input / output terminals 510b and 511b are positioned at both ends, and one voltage detecting terminal is located near the center. 530b is located.

Fastening grooves 550a, 550b, and 550c are drilled in each of the external input / output terminals 510a, 510b, and 510c, thereby making it possible to easily establish a robust electrical connection using a wire or the like.

Referring to FIG. 10, the mounting insulation member 400 has an approximately long hexahedral structure, and a rear surface thereof includes a cartridge coupling groove 410 into which a front end of a cartridge body (not shown) can be inserted and coupled. A pair of electrode terminal through holes 420 are perforated on the front surface thereof so that the electrode terminals of the battery cells introduced through the coupling grooves 410 may be exposed.

An upper portion of the electrode terminal through hole 420 is inserted into the rear grooves 540a, 540b, and 540c of the bent coupling portions 520a, 520b, and 520c among the electrode terminal connecting members (FIGS. 7 to 9: 500a, 500b, and 500c). The fastening upper end 430 is formed.

In addition, the front surface of the mounting portion for the stable mounting of the external input and output terminals (510a, 510b, 510c) and the voltage detection terminals (530a, 530b, 530c) of the electrode terminal connecting members (Figs. 7-9: 500a, 500b, 500c) 440 is formed and at positions corresponding to the fastening grooves 550a, 550b, 550c of the external input / output terminals 510a, 510b, 510c with the electrode terminal connecting members 500a, 500b, 500c mounted. , A fastening indentation 450 is formed.

Referring to FIG. 11, in the same manner as in FIG. 6, a plurality of cartridge bodies 101, 102..., Each having a battery cell built thereon, are sequentially stacked, and an upper portion on the uppermost cartridge body 107. The cover 190 is mounted, and the electrode terminal connecting members 500 are coupled to the front surface of the cartridge stack. The cartridge upper cover 190 is coupled to the fastening protrusion 140 and the fastening groove 192 formed on the upper sidewalls of both sides of the cartridge body 107, thereby creating a firmly coupled state.

The medium-large battery module 700 manufactured by the above process is shown in FIG. 12.

FIG. 13 schematically illustrates a structure in which the medium-large battery module manufactured in FIG. 12 is connected in series by using electrode terminal connecting members.

Referring to FIG. 13, the medium-large battery module 700 connects eight battery cells to which the mounting insulation member 400 is fastened in a state in which the medium-large battery module 700 is embedded in the cartridge 100, respectively. The A-type connection member 500a is coupled to the positive electrode terminal, the C-type connection member 500c is coupled to the negative electrode terminal located at the lower right side, and the B-type connection member 500b is coupled to the remaining electrode terminals. A structure 8S in which battery cells are connected in series is made.

However, of course, various parallel and / or series connection structures are possible in addition to the electrical connection structure of FIG. 13.

The medium-large battery module 700 of FIG. 12 may be manufactured in a larger battery module by combining a plurality of them for a desired capacity and output. Examples are illustrated in FIGS. 14 and 15.

Referring to these drawings, grooves 710 into which the binding members 800 and 801 for connecting another battery module 701 may be inserted into four corners of the medium and large battery module 700 in the vertical direction. Formed.

The binding members 800 and 801 have lengths corresponding to the heights of the medium and large battery modules 700 and 701, and are coupled to the binding grooves 710, 720, 730, and 740 in a sliding manner, respectively. By fixing 701, a larger battery module assembly 900 of greater capacitance or output as in FIG. 15 is made.

Although described with reference to the drawings according to an embodiment of the present invention, those skilled in the art will be able to perform various applications and modifications within the scope of the present invention based on the above contents.

As described above, the cell module cartridge according to the present invention prevents an internal short circuit by preventing movement of the battery cell even when the battery is dropped or an impact is applied from the outside, thereby providing further improved stability.

In addition, while complementing the mechanical stiffness, which is a disadvantage of the pouch type secondary battery, it is easy to connect the electrode terminals, as well as variable combination according to the desired output and capacity of the battery module, it is assembled using the cartridge of the present invention The medium-large battery module can be preferably used as a power source of an electric bicycle (E-bike), an electric motorcycle, an electric vehicle, or a hybrid electric vehicle.

Claims (14)

After sequentially stacking a plurality of cell modules having a structure in which a rechargeable battery cell ('battery cell') capable of charging and discharging is mounted on a cartridge having an open top surface, the cover is coupled to the top cartridge body, and the electrode of the battery cell It consists of a structure in which a member ('electrode terminal connecting member') for electrical connection of the terminal mechanically coupled to the front surface, the cartridge of the cell module, A rectangular structure corresponding to the battery cell for mounting the battery cell, the cartridge body having an open top surface, and an upper cover coupled to an open top surface of the top cartridge body in a state where the battery cell is mounted; A plurality of through holes are drilled in the lower surface of the cartridge body; A fastening protrusion that can be coupled to another cartridge is formed at an upper end side of the side wall, and a fastening groove corresponding to the fastening protrusion is formed at a lower end side of the side wall; On the front of the cartridge body, a separate member ('mounting member for mounting') for mounting the electrode terminal connecting member is mechanically assembled so that the electrode terminal connecting member can be stably connected to the electrode terminal of the battery cell. Medium-large battery module, characterized in that the coupling portion of the structure that can be fastened to form. delete The medium and large battery module according to claim 1, wherein the fastening protrusion and the groove are formed on both sidewalls of the cartridge, respectively. The method of claim 1, wherein a fastening groove for engaging with another cartridge body is formed at an upper end of the rear side wall of the cartridge body, and a fastening uneven portion corresponding to the groove is formed at the lower end of the rear side wall. Medium and large battery module characterized in. The medium and large battery module according to claim 1, wherein at least one protrusion is formed at an upper end of the side wall of the cartridge body to form a refrigerant passage when another cartridge body is stacked. The method of claim 1, wherein the front surface of the cartridge body, the groove in which a member ('binding member') for connecting it is inserted vertically formed in a state where another cartridge body is positioned in the lateral direction is formed vertically. Medium and large battery module. The method of claim 1, wherein the electrode terminal connecting member is bent to protrude toward the front and the coupling portion ('bent coupling portion') is bent to form a groove in the rear so that the electrode terminal of the battery cell can be inserted and coupled An external input-output terminal, and a medium-large battery module comprising a terminal for voltage detection which is bent to protrude toward the front side. The method of claim 1, wherein the mounting insulating member has a hexahedral structure having a size approximately equal to the front surface of the cartridge body, the rear end of the groove that can be inserted into the front end of the cartridge body ('cartridge coupling groove' ) Is formed, and a pair of grooves ('electrode terminal through grooves') are formed on the front surface thereof so that the electrode terminals of the battery cells introduced through the coupling grooves may protrude. Mid-large battery module, characterized in that the upper end of the electrode terminal connecting member is inserted into the rear groove of the bent coupling portion is formed. The medium and large battery module according to claim 1, wherein the battery cell is mounted on the cartridge body of the cell module, the plurality of cartridge bodies are stacked, and the upper cover is coupled to the uppermost cartridge body. The medium and large battery module of claim 9, wherein an elastic one side adhesive tape having a predetermined thickness is added to an upper surface of the battery cells constituting the multilayer bodies. A high output large capacity battery module assembly comprising a plurality of battery modules according to any one of claims 1 and 3 to 10. 12. The battery module assembly according to claim 11, wherein the battery modules are disposed adjacent to each other in the lateral direction and interconnected by using the binding member. The battery module assembly according to claim 12, wherein the assembly is used as a charge / discharge power source of an electric vehicle or a hybrid electric vehicle. The battery module assembly according to claim 13, wherein the assembly is used as a charge / discharge power source of an electric vehicle.

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