KR101217459B1 - battery module assembly - Google Patents

Abstract

The present invention relates to a battery module assembly, in which a plurality of rectangular battery modules in which a plurality of battery cells or unit modules are connected in series is stacked two or more in its width direction (vertical direction) and height direction (lateral direction). To form a hexahedron structure (hexahedral stack) as a whole, and the outer peripheral edges of the hexahedral stack provide a battery module assembly fixed by a frame member.

The battery module assembly according to the present invention has a compact structure, and has excellent structural stability against external impact, and can be assembled in a simple manner with a small number of members for mechanical fastening and electrical connection.

Description

Battery Module Assembly {Battery Module Assembly}

1 is a perspective view of a structure in which a hexahedral stack of rectangular battery modules in a battery module assembly according to an embodiment of the present invention is fixed by frame members;

FIG. 2 is a perspective view of a structure in which the PSM is mounted on one side of the frame member in a state in which the hexahedral stack is excluded from the battery module assembly of FIG. 1; FIG.

3 is a front perspective view of a state in which the PSM is mounted on one side of the hexahedral stack in the battery module assembly of FIG. 1;

4 is a rear perspective view of FIG. 3;

FIG. 5 is a perspective view of a structure of a rectangular battery module constituting a hexahedral stack in the battery module assembly of FIG. 4; FIG.

6 and 7 are perspective views of the structure of the unit module and the pack case constituting the rectangular battery module;

8 and 9 are perspective views of the battery cells and the cell cover constituting the unit module in Figure 6;

10 to 15 are perspective views of the upper right frame, the lower right frame, the upper left frame, the lower left frame, the integrated front frame and the integrated rear frame constituting the frame member of FIG. 2;

FIG. 16 is a perspective view of an insulating member installed in the central hollow portion of the unitary front frame of FIG. 14 and the unitary rear frame of FIG. 15;

FIG. 17 is a perspective view of the frame member with the insulating member of FIG. 16 mounted; FIG.

18 is a perspective view of the PSM in FIG. 4;

19 and 20 are exploded perspective views of a battery module assembly according to an embodiment of the present invention and a frame for effectively mounting the battery module assembly to an external device or device, and mounting the battery module assembly to the battery module assembly.

The present invention relates to a battery module assembly, and more particularly, a plurality of rectangular battery modules in which a plurality of battery cells or unit modules are connected in series has two widthwise (longitudinal) and high (lateral) directions. It is related to the battery module assembly which is laminated in pieces or more to form a hexahedral structure (hexahedral stack) as a whole, the outer peripheral edges of the hexahedral stack is fixed by a frame member.

BACKGROUND ART [0002] In recent years, rechargeable secondary batteries have been widely used as energy sources for wireless mobile devices. In addition, the secondary battery has attracted attention as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs), which are proposed as a way to solve the air pollution of conventional gasoline and diesel vehicles that use fossil fuels. have.

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 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 its advantages such as low weight, low manufacturing cost, and easy deformation.

In order for the medium-large battery module to provide the output and capacity required by a given device or device, it is necessary to electrically connect a plurality of battery cells in series and maintain a stable structure against external force.

Therefore, in the case of constructing a medium-large battery module using a plurality of battery cells, since a large number of members are generally required for their mechanical fastening and electrical connection, 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. This increase in size is undesirable in view of the space limitations of the apparatus or device in which the medium-large battery module is mounted. Furthermore, in order to be efficiently mounted in a limited internal space such as a vehicle, a medium to large battery module having a more compact structure is required.

In addition, since the battery cells constituting the medium-large battery module is composed of a secondary battery capable of charging and discharging, inevitably a lot of heat is generated during the operation process, if such heat is not removed efficiently, to promote the deterioration of the battery cell In some cases, there is a risk of fire or explosion. Therefore, since the heat dissipation of the battery cells should be able to proceed efficiently, it is necessary to secure a flow path, which is one of the factors causing an increase in the size of the battery module.

In this regard, the formation structure of the medium-large battery module in some prior arts is as follows.

In Japanese Patent No. 3355958, in a medium-large battery module having a structure in which a plurality of battery cells are stacked in a limited space of a vehicle or the like, a stacked battery group of another group is used in a state in which a temperature rises by passing a group of stacked battery groups. In order to prevent a decrease in cooling efficiency that occurs when passing continuously, a protrusion for forming a coolant flow path is formed on the outer surface of the battery cell, and the coolant flows through the stacked battery groups after the coolant flows in between the battery groups. A structure for cooling the cells is shown. In the above patent, the battery cell is an alkaline battery such as a nickel-hydrogen secondary battery, and has an outer shape to have a high mechanical rigidity in itself, so that a plurality of battery cells are plated on both sides and the band is fixed with a band. Medium to large battery modules are constructed in such a way.

However, apart from the structural features for increasing the cooling efficiency, the battery cell in the patent has the advantage that it is easy to form a laminated structure in appearance, but the volume and weight due to the appearance configuration to give high mechanical rigidity This has the disadvantage of being very large.

In addition, Japanese Laid-Open Patent Publication No. 2005-050616 discloses a bottom rack in which two battery packs are each placed in order to increase safety against external force due to a collision of a vehicle in a medium-large battery module mounted in a large vehicle such as a bus. And an upper rack, wherein the lower rack stand member and the upper rack mount member are suspended in the body of the vehicle by the lower rack suspension member and the upper rack suspension member. Disclosed is a medium-large battery module having a high rigidity and a low rigidity of the suspension member.

The medium and large battery modules of the above technology can improve safety in a vehicle crash by using a plurality of racks, but need to use two complex racks to mount a total of four battery packs, thereby increasing volume and weight. In constructing a battery module having a compact structure, there is a limit to the application in the technical aspect.

On the other hand, since the battery module assembly is a structure in which a plurality of battery cells are combined, when some battery cells are overvoltage, overcurrent, and overheating, safety and operation efficiency of the battery module are greatly detrimental, and thus a means for detecting and controlling them is required. Therefore, by connecting a voltage sensor, a temperature sensor, and the like to the battery cells to check and control the operating state in real time or at regular intervals, the installation or connection of such detection means and their control means greatly facilitate the assembly of the battery module. It is cumbersome and there is a risk of short circuit due to the large number of wirings for it.

Therefore, as described above, there is a high need for a battery module assembly which is more compact, has excellent structural stability, and is capable of mounting a detection means with a simple structure.

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

Specifically, an object of the present invention has a compact structure that can be stably mounted in a minimum space in a limited space such as a vehicle, and can be assembled in a simple manner with a small number of members for mechanical fastening and electrical connection. It is to provide a battery module assembly excellent in structural stability against impact.

The battery module assembly according to the present invention for achieving this object, a plurality of rectangular battery modules in which a plurality of battery cells or unit modules are connected in series in its width direction (vertical direction) and height direction (lateral direction) It is laminated | stacked two or more, and comprises the cube structure (hexahedral laminated body) as a whole, Comprising: The outer peripheral edges of the said laminated body are comprised by the frame member.

In the battery module assembly of the present invention, a plurality of rectangular battery modules are laminated in a longitudinal direction and a lateral direction to form a six-sided laminate, and the six-sided laminate is fixed by a frame member, thereby having a compact and stable structure as a whole and a large number of members. Mechanical fastening and electrical connection can be achieved without the use of

The plurality of rectangular battery modules constituting the hexahedral stack, as described above, has a structure in which a plurality of battery cells or unit modules are connected in series. For example, the rectangular battery module is formed by stacking two or more plate-shaped battery cells. Preferably, the rectangular battery module may be configured by stacking two or more unit modules.

The structure of the unit module may be configured in various configurations, a preferred example will be described below.

The unit module has a structure in which plate-shaped battery cells having electrode terminals formed at upper and lower ends thereof are connected to each other in series, and two or more battery cells having a stacked structure in which the connecting portions of the electrode terminals are bent, and the Excluding the electrode terminal portion is configured to include a high-strength cell cover coupled to surround the outer surface of the battery cells.

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 it is charged for the configuration of the battery module. A preferable example thereof is a secondary battery having a structure in which an electrode assembly is embedded in a battery case of a laminate sheet including a resin layer and a metal layer, and electrode terminals protrude from both upper and lower ends. More specifically, It may be a structure in which an electrode assembly is built in the case. A secondary battery having such a structure may be referred to as a pouch type battery cell.

These battery cells constitute one unit module in a structure wrapped in a high-strength cell cover made of synthetic resin or metal in two or more units, and the high-strength cell cover protects the battery cells having low mechanical rigidity while charging and discharging. By suppressing repeated expansion and contraction changes it prevents the sealing of the battery cell is separated. Accordingly, it becomes possible to manufacture a middle- or large-sized battery module with superior safety.

The battery cells in the unit module or between the unit modules are connected in series and / or parallel manner. In a preferred example, the battery cells are arranged in series in the longitudinal direction so that their electrode terminals are continuously adjacent to each other. A plurality of unit modules can be manufactured by folding the battery cells in two or more units in an overlapping manner and wrapping them in a predetermined unit by a cell cover.

The coupling of the electrode terminals can be realized in various ways such as welding, soldering, mechanical fastening, etc., and can be achieved preferably by welding.

The plurality of battery cells or unit modules, in which electrode terminals are interconnected and filled with high density, may be vertically mounted in a vertically separated case coupled to a prefabricated fastening structure to form the rectangular battery module.

More specific details of a unit module and a rectangular battery module manufactured using a plurality of such unit modules are disclosed in Korean Patent Application No. 2006-45443, filed by the present applicant, which is incorporated herein by reference.

In the battery module assembly according to the present invention, the hexahedral stack is a state in which two rectangular battery modules are arranged opposite to each other in the transverse direction, one or more rectangular battery modules in the longitudinal direction with respect to each rectangular battery module. The structure in which these are arranged is preferable.

As used herein, the term “facing arrangement” means that two rectangular battery modules are arranged such that their same portions face each other. For example, in the rectangular battery module having a structure in which the input / output terminals are located at one side, the input / output terminals of each of the rectangular battery modules may be arranged to face the one side (a) of the hexahedral stack. Such an opposing arrangement has an advantage of further simplifying the configuration for electrical connection and the like.

In one preferred example, the rectangular battery module may have a rectangular parallelepiped shape having a large height to width, and the six-layered laminate may have a substantially rectangular parallelepiped shape as a whole. Therefore, a very compact and stable structure can be made as a whole, and the size limitation problem can be solved in mounting the battery module assembly in a predetermined portion such as an interior space of the vehicle.

In the example of the opposite arrangement structure, the surface on which the input and output terminals are located (terminal orientation surface: a) is preferably a PSM (Power Switching Module) for preventing overcurrent and overvoltage, voltage drop when removing the battery module assembly, and the like. ) Is installed.

In addition, a battery management system (BMS), which is a battery control system for controlling the operation of a battery module, is mounted on a surface (terminal alignment surface: a) on which the input / output terminals are located or on an opposite surface (d) of the terminal alignment surface (a). It is easy to connect with the input / output terminals or slave BMS located on the opposite side, and the electrical connection structure and the assembly process can be simplified further, and the length of the electrical connection means can be reduced to prevent the increase of internal resistance. It is possible to reduce the risk of disconnection of the connection means due to an external impact.

In the battery module assembly of the present invention, the BMS may be mounted with or spaced apart from the PSM. Preferably, the BMS is mounted with the PSM or adjacent to the PSM on the side where the input / output terminals are located. It may be a structure that is installed at a predetermined distance or connected by an electrical connection means.

In the battery module assembly according to the present invention, the battery cells or unit modules inside the rectangular battery module are arranged to be parallel to the pair of opposing faces (b, c) of the hexahedral stack, so as to achieve high space utilization. The rectangular battery modules are also arranged in parallel with respect to the opposing faces b and c of the stack. The refrigerant moves between the rectangular battery modules to remove heat generated from the battery cells during charging and discharging.

On the other hand, the frame member for fixing the rectangular battery modules in the battery module assembly of the present invention is fixed only the outer peripheral edges of the hexahedral stack, so as to induce the refrigerant to flow in a predetermined direction, and at the same time, In order to reduce the temperature variation of the outer and inner rectangular battery modules, the opposing surfaces b and c are preferably equipped with a sealing member.

That is, the sealing members mounted on both opposing faces (b, c) of the six-sided laminate respectively close both sides of the six-sided laminate, thereby allowing the refrigerant to move only through the six-sided laminate. Therefore, when the sealing member is not mounted, relatively fast cooling of the outer rectangular battery module opened to the outside is prevented. In general, fast cooling of the battery module is preferable, but in the medium-large battery system, a high cooling rate of only some battery modules causes an imbalance between the battery modules, and such an imbalance ultimately accelerates deterioration of the battery cell. Therefore, the sealing member forms a flow path of the refrigerant (air) and at the same time increases the uniformity between the unit battery modules.

Preferably, the sealing member may have a structure that is bent so that the refrigerant passage is formed on the inner surface facing the battery module. In addition, in order to further increase the uniformity between the battery modules as described above, the sealing member is preferably made of a heat insulating material. In particular, the sealing member may be made of a foamable resin so as to increase the thermal insulation while minimizing the total weight of the battery module assembly.

The frame member fixing the outer circumferential edge of the rectangular stack of rectangular battery modules can be a variety of structures, for example, a structure in which each of the frames fixing the 12 hexahedron edges are integrally formed, at least four Frames fixing the corners may be integrally formed.

Preferably, the frames for fixing the four corners located on both sides in the transverse direction of the hexahedral stack is formed integrally, the remaining individual frames may be a structure that is fastened with the integral frames. Such a fastening structure, for example, uses the individual frames in two units to fix the rectangular battery modules in the upper row and the rectangular battery modules in the lower row in each set, and fastens two unitary frames to these individual frames. As a result, assembling of the battery module assembly becomes possible, the efficiency of the assembling process is excellent.

The sealing member described above may optionally close both opposing faces b and c of the hexahedral stack in a manner mounted on the frame member.

In addition, the PSM and the BMS described above may have a structure in which the safety elements and the control elements are mounted on a plate that is fastened to a frame member that fixes corners of one surface of the six-layered laminate. In one preferred example, the PSM and BMS can be constructed in a structure that mounts a plurality of elements on a plastic substrate and electrically connects them by a bus bar. Here, since the plastic substrate is coupled to the frame member, the plastic substrate may also serve to maintain the mold of the frame member.

The battery module assembly according to the present invention is mounted on a frame member for fixing the corners of one side of a six-sided stack so as to be effectively mounted on a predetermined device device such as a vehicle, for mounting the battery module assembly to an external device or a device. It may be a structure in which the dragon frame member is further coupled. Such a mounting frame member may be composed of a pair of frames that are gently bent to protrude outwards while both ends are coupled to the frame member.

The present invention also provides a medium-large battery pack comprising the battery module assembly.

In consideration of mounting efficiency, structural stability, etc., the medium-large battery pack according to the present invention has a limited mounting space and may be preferably used as a power source for electric vehicles, hybrid electric vehicles, etc., which are exposed to frequent vibrations and strong shocks.

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

1 is a perspective view schematically illustrating a structure in which a hexagonal stack of rectangular battery modules is fixed by frame members in a battery module assembly according to an exemplary embodiment of the present invention. 2 is a perspective view schematically illustrating a structure in which the PSM is mounted on one side of the frame member in a state in which the hexahedral stack is excluded from the battery module assembly of FIG. 1. In addition, FIG. 3 schematically shows a front perspective view of a state in which the PSM and BMS are mounted on one side of the hexahedral stack in the battery module assembly of FIG. 1, and FIG. 4 is a rear perspective view of FIG. 3. It is.

Referring to these drawings, the battery module assembly 100 includes six rectangular battery modules 201, 202, 203, 204, 205, and 206, and rectangular battery modules 201, 202, 203, 204, 205, and 206. It consists of a frame member 300 for fixing the outer circumferential edges of the hexahedral stack 200a, and the PSM 400 and the BMS 500, and exhibits a rectangular parallelepiped shape as a whole.

The six rectangular battery modules 201, 202, 203, 204, 205, and 206 are stacked two by two in the lateral direction and three by the longitudinal direction, and the input / output terminals 240 formed on one side thereof are It is laminated | stacked in the opposing arrangement structure so that it may adjoin each other. That is, the battery modules 201, 202, 203 of the upper row and the battery modules 204, 205, 206 of the lower row have a symmetrical structure with respect to the virtual center line. Is stacked on the battery modules 204, 205, and 206 in the lower row in an inverted form.

Each of the rectangular battery modules 201, 202, 203, 204, 205, and 206 has a structure in which a plurality of plate-shaped unit modules are built in a standing form, and details thereof will be described later with reference to FIG. 5. Explain.

The frame member 300 has a structure in which a plurality of frames are combined to stably fix 12 outer peripheral edges of the six-sided laminate 200a, and the six-sided laminate in a state where the six-sided laminate 200a is mounted. Six faces of the 200a are opened to the outside. Further details of the frame member 300 will be described later with reference to FIGS. 10 to 17.

On the front side of the hexahedral stack 200a in which the input / output terminals 240 are located, a current is charged and discharged as necessary, an appropriate voltage drop is performed during the operation or disassembly of the battery system, and a rectangular battery module is provided. A PSM 400 member is provided for making electrical connections to the circuits and protecting the circuits from overcurrent, overvoltage, and the like. Since the input / output terminals of the rectangular battery modules are adjacent to each other, the connection of the PSM 400 is easy and the length of the member for the electrical connection can be greatly reduced. More details of the PSM 400 will be described later with reference to FIG. 19.

5 is a perspective view of the rectangular battery module constituting the hexahedral stack in the battery module assembly of Figure 4, Figure 6 and Figure 7 is a perspective view of the structure of the unit module and the pack case constituting the rectangular battery module It is shown as. 8 and 9 schematically illustrate perspective views of the battery cells and the cell cover constituting the unit module.

Referring to these drawings, the rectangular battery module 201 has a structure in which the unit module stack 210 is mounted on the pack cases 220 and 230 of the up and down assembly type in a state of standing upright. The input / output terminal 240 is formed on the front surface of the upper case 220. A bus bar 250 for electrical connection with the input / output terminal 240 is formed on the front surface of the lower case 230, and a connector 260 for connection of a sensor for detecting voltage and temperature is formed on the rear surface.

The unit module stack 210 has a structure in which four unit modules 211, 212, 213, and 214 are electrically connected and stacked. Each unit module 211 has a structure in which a positive electrode terminal and a negative electrode terminal are connected to two battery cells 210a and 210b formed at both ends in series to be wrapped with a high strength cell cover 210c in a state in which the electrode terminals are bent. Consists of

For further details about the rectangular battery module 201, as described above, reference may be made to the contents described in Korean Patent Application No. 2006-45443.

10 to 15 schematically illustrate perspective views of the upper right frame, the upper left frame, the lower right frame, the lower left frame, the integrated front frame, and the integrated rear frame of the frame member of FIG. 2.

First, referring to FIG. 10, the upper right frame 310 has a substantially T-shaped structure in a horizontal cross section so as to surround an outer circumferential edge of the upper right side of a hexahedral stack (not shown) made of rectangular battery modules. And, a plurality of fastening grooves 311 for engaging with the protruding fastening portion 232 of the lower rear rear case of Figure 7 is formed.

Referring to FIG. 11, the upper left frame 320 has a substantially T-shaped structure in a horizontal cross section so as to surround an outer circumferential edge of the upper left side of the hexahedral stack composed of rectangular battery modules, and the front of the lower case of FIG. 7. A plurality of fastening grooves 321 are formed to couple with the lower protrusion fastening part 234.

Accordingly, the rear lower and front lower ends of the rectangular battery modules 201, 202, and 203 constituting the upper row of the battery module assembly of FIG. 4 are respectively formed by the upper right frame 310 of FIG. 10 and the upper left frame of FIG. 11 ( When fixed to 320, three rectangular battery modules 201, 202, and 203 form one set.

The number of fastening grooves 311 and 321 respectively drilled in the upper right frame 310 and the upper left frame 320 is different when the battery modules 201, 202, and 203 are brought into close contact with each other. This is because the protruding fastening portions 232 of FIG. 7 respectively formed on both rear lower sides of the rear portion are partially overlapped with each other.

For the same reason, the lower right frame 330 of FIG. 12 and the lower left frame 340 of FIG. 13 form an approximately T-shaped structure in a horizontal cross section and fastening grooves 331 and 341 for coupling the fastening portions of the rectangular battery module. Is formed. In addition, the rear lower and front lower ends of the rectangular battery modules 204, 205, and 206 constituting the lower row of the battery module assembly of FIG. 4 are respectively the lower right frame 330 of FIG. 12 and the lower left frame of FIG. 13. Fixed to 340, three rectangular battery modules 204, 205, and 206 form one set.

As such, in the battery module assembly of FIG. 4, the rectangular battery modules 201, 202, 203 constituting the upper row and the rectangular battery modules 204, 205, 206 constituting the lower row are frames 310, 320. , 330, 340, each set, stacks the frames 310, 320, 330, 340 to be oriented outward.

In such a stacked state, the unitary front frame 350 of FIG. 14 and the unitary rear frame 360 of FIG. 15 are mounted.

Referring to these drawings, the unitary front frame 350 and the unitary rear frame 360 are in a lattice form having a hollow structure in the center thereof, and the ends of the frames (FIGS. 10 to 13: 310, 320, 330, and 340) are formed. Fastening grooves 351 and 361 are formed in the lateral direction to be coupled to each other.

However, in the integrated front frame 350, a fastening groove 352 for coupling the mounting frame described in FIGS. 19 and 20 will be provided to effectively mount the battery module assembly to a predetermined device or device such as a vehicle. The frame 350 is formed separately in the horizontal direction. Accordingly, the unitary front frame 350 includes an extension part 353 that is bent upward at both ends and then bent inward again, and the fastening groove 352 is formed on the bent extension part 353. It consists of a structure.

FIG. 16 is a perspective view of an insulating member 370 installed in the central hollow portion of the integrated front frame 350 of FIG. 14 and the integrated rear frame 360 of FIG. 15.

The insulating member 370 is made of a foamed resin in order to lower the weight while increasing the heat insulating effect, and the bent structure 371 is formed on the inner side to form a flow path of the refrigerant.

FIG. 17 is a perspective view of the frame member in which the insulating member 370 is mounted.

Referring to FIG. 17, an insulating member 370 is installed in the integrated front frame 350 and the integrated rear frame 360, respectively, and the integrated frames 350 and 360, the upper right frame 310, and the lower right corner are installed. The PSM 400 is mounted on the right side of the frame 330.

18 schematically illustrates the structure of the PSM.

Referring to FIG. 18, the PSM 400 has a structure in which various elements are mounted on a thick plastic substrate 410 and they are connected by bus bars and wires.

The insulating plastic substrate 410 may have a shape that may be installed to correspond to the open right surface formed of the integrated front frame 350, the integrated rear frame 360, the upper right frame 310, and the lower right frame 330 in FIG. 17. It consists of a size and consists of a structure in which the coupling portion 411 for protruding on both sides.

Accordingly, the plastic substrate 410 of the PSM 400 not only provides a space in which relevant elements, bus bars and wires are mounted, but also serves as a structure for supporting the frame of the frame member.

19 and 20 are perspective views of a frame for effectively mounting the battery module assembly according to an embodiment of the present invention to an external device or device, and an exploded perspective view of mounting the battery module assembly to the battery module assembly, respectively.

Referring to these drawings, the mounting frame 380 has a structure in which both ends are gently bent so as to protrude outwards while being coupled to the bending extension part 353 of the integrated front frame 350. In addition, the mounting frame member 380 has fastening grooves 382 coupled to external devices or devices (not shown) in addition to the fastening grooves 381 coupled to the front frame 350 near both end portions.

Accordingly, the BMS 500 may be installed adjacent to the PSM 400 as shown in FIG. 19 or may be installed to be connected to the PSM 400 by an electrical connection member at a predetermined distance (not shown). In addition, the battery module assembly 100 including the PSM 400 and the BMS 500 may be effectively mounted to an external device or device by the mounting frame 380.

Although described above with reference to the drawings of the battery module assembly according to an embodiment of the present invention, those skilled in the art to which the present invention based on the above it is to perform various applications and modifications within the scope of the present invention. It will be possible.

As described above, the battery module assembly according to the present invention has a compact structure that can be stably mounted in a limited space in a limited space such as a vehicle, and the number of members for mechanical fastening and electrical connection is small and simple. It can be assembled and has the advantage of excellent structural stability against external impacts.

Claims (24)

A plurality of rectangular battery modules, in which a plurality of battery cells or unit modules are connected in series, are stacked two or more in the width direction (longitudinal direction) and in the height direction (lateral direction) to form a hexahedron structure (hexahedral stack). ), The outer circumferential edges of the hexahedral stack are fixed by a frame member, and the hexahedral stack has two rectangular battery modules arranged in a transverse direction opposite to each other. One or more rectangular battery modules are arranged in the longitudinal direction with respect to the battery module, and a BMS (Battery Management System) for controlling the operation of the battery module is mounted on the orientation surface of the input / output terminals or the opposite surface thereof. Battery module assembly, characterized in that. delete The battery module assembly according to claim 1, wherein the rectangular battery module is a rectangular parallelepiped having a large width to height, and the six-layered laminate has a rectangular parallelepiped structure as a whole. The method of claim 1, wherein the unit module is a structure in which the plate-shaped battery cells having the electrode terminals formed on the top and bottom, respectively, are connected in series, two or more of the electrode terminals are bent to form a laminated structure The battery module assembly, characterized in that it comprises a high-strength cell cover coupled to surround the outer surface of the battery cells, except for the electrode terminal portion. The battery module assembly of claim 1, wherein the input / output terminals of each of the rectangular battery modules are oriented to face one surface (a) of the hexahedral stack. The battery module assembly according to claim 5, wherein a power switching module (PSM) is mounted on the alignment surface (a) of the input / output terminals. delete The battery module assembly of claim 1, wherein the BMS is installed together with a power switching module (PSM) or spaced apart from the power switching module (PSM). The method of claim 5, wherein the battery cells or unit modules in the rectangular battery module are arranged parallel to the pair of opposing faces (b, c) of the hexahedral stack, the opposing faces (b, c) are sealed Battery module assembly, characterized in that the member is mounted. 10. The battery module assembly of claim 9, wherein the sealing member is bent to form a refrigerant passage on an inner surface of the rectangular battery module. The battery module assembly according to claim 9, wherein the sealing member is made of a heat insulating material. The battery of claim 1, wherein the frame member is integrally formed with respective frames fixing twelve hexahedral edges or integrally formed with frames for fixing four corners of at least one side thereof. Module assembly. 13. The frame member of claim 12, wherein the frame member is integrally formed with frames fixing four corners each of which is located on a pair of faces b and c of the six-sided laminate, and the remaining four individual frames. The battery module assembly, characterized in that made of a structure that is fastened to the one-piece frames. The battery module assembly according to claim 13, wherein a sealing member is mounted to the unitary frames. 15. The method of claim 13, wherein the rectangular frames of the upper row and the rectangular battery modules of the lower row are fixed to each set by using the individual frames in two units, and the two integral frames are fastened to these individual frames. Battery module assembly, characterized in that. According to claim 1, Power Switching Module (PSM) and Battery Management System (BMS) is characterized in that the safety elements and control elements are mounted on a plate that is fastened to the frame member for fixing the corners of one side of the six-layer laminate Battery module assembly. The battery module assembly according to claim 1, wherein a mounting frame member for mounting the battery module assembly to an external device is further coupled to the frame member for fixing the corners of one surface of the six-side stack. 18. The battery module assembly according to claim 17, wherein the mounting frame member is composed of a pair of frames gently bent so as to protrude outward while both ends thereof are coupled to the frame member. A high output large-capacity battery pack containing a battery module assembly according to claim 1. 20. The medium and large battery pack of claim 19, wherein the battery pack is used as a power source for an electric vehicle or a hybrid electric vehicle. A plurality of rectangular battery modules, in which a plurality of battery cells or unit modules are connected in series, are stacked two or more in the width direction (longitudinal direction) and in the height direction (lateral direction) to form a hexahedron structure (hexahedral stack). And the outer circumferential edges of the hexahedral stack are fixed by a frame member, and the hexahedral stack has two rectangular battery modules arranged in a transverse direction opposite to each other. One or more rectangular battery modules are arranged in the longitudinal direction with respect to each other, and the input / output terminals of each of the rectangular battery modules are oriented to face one side of the hexahedral stack, and the orientation surfaces of the input / output terminals Battery module assembly characterized in that the PSM (Power Switching Module) is mounted. A plurality of rectangular battery modules, in which a plurality of battery cells or unit modules are connected in series, are stacked two or more in the width direction (longitudinal direction) and in the height direction (lateral direction) to form a hexahedron structure (hexahedral stack). And the outer circumferential edges of the hexahedral stack are fixed by a frame member, and the hexahedral stack has two rectangular battery modules arranged in a transverse direction opposite to each other. One or more rectangular battery modules are arranged in a longitudinal direction with respect to the frame member, and the frame member is integrally formed with respective frames fixing 12 hexahedral edges, or at least four corners of at least one side thereof. Frames for fixing them are integrally formed, and a pair of faces of each of the six-sided laminates face each other. Frames fixing each of the four corners to be positioned are formed integrally, the remaining four individual frames are characterized in that the structure consisting of fastening to the one-piece frame. A plurality of rectangular battery modules, in which a plurality of battery cells or unit modules are connected in series, are stacked two or more in the width direction (longitudinal direction) and in the height direction (lateral direction) to form a hexahedron structure (hexahedral stack). And the outer circumferential edges of the hexahedral stack are fixed by a frame member, and the hexahedral stack has two rectangular battery modules arranged in a transverse direction opposite to each other. One or more rectangular battery modules are arranged in the longitudinal direction with respect to each other, and PSM (Power Switching Module) and BMS (Battery Management System) are fastened to the frame member that fixes the edges of one side of the six-layer stack. Battery module assembly, characterized in that the safety elements and control elements are mounted on the plate. A plurality of rectangular battery modules, in which a plurality of battery cells or unit modules are connected in series, are stacked two or more in the width direction (longitudinal direction) and in the height direction (lateral direction) to form a hexahedron structure (hexahedral stack). And the outer circumferential edges of the hexahedral stack are fixed by a frame member, and the hexahedral stack has two rectangular battery modules arranged in a transverse direction opposite to each other. 1 or more rectangular battery modules arranged in the longitudinal direction with respect to the frame member, the frame member for fixing the corners of one side of the hexahedral stack, the mounting frame for mounting the battery module assembly to an external device Battery module assembly characterized in that the member is further coupled.

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