KR20160041635A - Cartridge for secondary battery and battery module including the same - Google Patents

Abstract

According to the present invention, disclosed are a cartridge, which is used to receive or stack a plurality of secondary batteries when a battery module is configured by including the secondary batters, and a battery module including the same. According to one aspect of the present invention, the cartridge for a secondary battery includes a primary cartridge and a secondary cartridge. The primary cartridge includes a first cooling plate configured in the form of a plate, a first frame configured to cover an outer peripheral portion of the first cooling plate, and a first bolt coupling part provided in the first frame and having a through hole vertically formed therein to receive a portion of the secondary battery in an internal space defined by the first frame. The secondary cartridge includes a second cooling plate configured in the form of a plate, a second frame configured to cover an outer peripheral portion of the second cooling plate, and a second bolt coupling part provided in the second frame and having a through hole vertically formed therein. The secondary cartridge is configured to be coupled to the first cartridge at a lateral side. When the secondary cartridge is coupled to the first cartridge at the lateral side, the through hole in the second bolt coupling part communicates with the through hole of the first bolt coupling part. Another portion of the secondary battery is received in an internal space defined by the second frame.

Description

[0001] The present invention relates to a cartridge for a secondary battery and a battery module including the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a battery, and more particularly, to a cartridge used for storing or stacking a secondary battery, including a plurality of secondary batteries, and a battery module including the same.

The secondary rechargeable batteries are nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries have almost no memory effect compared to nickel- It is very popular because of its low self-discharge rate and high energy density.

These lithium secondary batteries mainly use a lithium-based oxide and a carbonaceous material as a cathode active material and an anode active material, respectively. The lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate each coated with such a positive electrode active material and a negative electrode active material are disposed with a separator interposed therebetween, and an outer casing, that is, a battery case, for sealingly storing the electrode assembly together with the electrolyte solution.

Generally, a lithium secondary battery can be classified into a can type secondary battery in which an electrode assembly is embedded in a metal can, and a pouch type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of the casing.

In recent years, secondary batteries are widely used not only in small-sized devices such as portable electronic devices, but also in medium to large-sized devices such as automobiles and electric power storage devices. When used in such a medium to large-sized apparatus, a large number of secondary batteries are electrically connected to increase capacity and output. In particular, pouch-type secondary batteries are widely used because they are easy to laminate in such a middle- or large-sized apparatus.

However, since the pouch-type secondary battery is generally packaged in a battery case of a laminate sheet of aluminum and polymer resin, the mechanical rigidity is not so large. Therefore, when a battery module including a plurality of pouch-shaped secondary batteries is constructed, a cartridge is often used to protect the secondary battery from external impact, prevent the flow thereof, and facilitate stacking. These cartridges are used in the form of a plurality of stacked layers to constitute a battery module, and the secondary battery can be located in an inner empty space formed when the cartridges are stacked.

Meanwhile, when a plurality of secondary batteries are assembled using a plurality of cartridges, a plate-shaped cooling fin, that is, a cooling plate may be interposed between the secondary batteries. The secondary battery may be used in a high temperature environment such as in the summer, and the secondary battery itself may also generate heat. In this case, when the plurality of secondary batteries are laminated to each other, the temperature of the secondary battery may be further increased. If the temperature is higher than the proper temperature, the performance of the secondary battery may deteriorate, and there is a risk of explosion or ignition in severe cases. Therefore, when constructing the battery module, it is possible to use a configuration in which a cooling plate is interposed between the secondary batteries to prevent the temperature rise of the secondary battery through the cooling plate.

In the case of the battery module in which the cooling plate is disposed between the secondary batteries, the secondary battery can be cooled in various forms and systems. Among these cooling methods, an air-cooling type in which the temperature of the secondary battery is lowered through heat exchange between the cooling plate and the air by making the outside air flow around the cooling plate is widely used.

However, in the case of a battery module that cools the secondary battery by using the air cooling type, it is important that the flow path is stably secured around the cooling plate so that the external air flows well through the flow path. However, in the case of the conventional battery module, there is a problem that the flow path can not be stably secured around the cooling plate. Particularly, aluminum is widely used as a cooling plate. The cooling plate made of an aluminum material is widely used in the manufacturing process of the cartridge, such as the process of injection or frame bonding of a frame made of a plastic part in a cartridge, Distortion such as distortion is liable to occur.

However, such a deformation of the cooling plate reduces or prevents the size of the flow passage formed around the cooling plate, thereby preventing the flow of external air through the flow passage smoothly, thereby causing a problem of significantly lowering the cooling efficiency of the secondary battery through the cooling plate .

In addition, in recent years, a battery module is constructed by using a secondary battery having a large size in order to increase output or capacity. In the case of a cartridge for stacking such a large secondary battery, There is no other choice. However, if the size of the cooling plate is increased, the possibility of deformation of the cooling plate is further increased, and it becomes more difficult to stably secure the cooling channel.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a secondary battery stacking cartridge capable of improving the cooling efficiency of the secondary battery and being structurally prevented from being warped, It is aimed to provide automobiles.

Other objects and advantages of the present invention will become apparent from the following description, and it will be understood by those skilled in the art that the present invention is not limited thereto. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

According to another aspect of the present invention, there is provided a cartridge for a secondary battery, including a first cooling plate configured in the form of a plate, a first frame configured to surround an outer periphery of the first cooling plate, A first cartridge having a first bolt engaging portion formed with a vertical direction through hole and accommodating a part of the secondary battery in an inner space formed by the first frame; And a second cooling plate formed in a plate shape, a second frame configured to surround an outer periphery of the second cooling plate, and a second bolt coupling portion provided in the second frame and having a vertical through hole formed therein, 1 cartridge, wherein a through hole of the second bolt coupling portion is connected to a through hole of the first bolt coupling portion when side coupling is performed, and the other portion of the secondary battery And a second cartridge accommodating the first cartridge.

At least two of the first bolt coupling portions are spaced apart from each other by a predetermined distance in the vertical direction, and the second bolt coupling portion is inserted between the first bolt coupling portions spaced apart in the vertical direction so that the through- And may be connected to the through hole of the bolt coupling portion.

The first bolt coupling portion and the second bolt coupling portion may be located on both sides of the coupling portion of the first cartridge and the second cartridge, respectively.

In addition, the first cartridge and the second cartridge may each include a first hook engagement portion and a second hook engagement portion configured to be hookable in mutually corresponding positions and shapes.

In addition, the first hook engaging portion may include a first upper protruding portion protruding outward from an upper portion of the engaging portion of the first cartridge and formed with a lower hook or groove, and a second upper protruding portion protruding outward from the lower portion of the engaging portion of the first cartridge. And the first hook protrudes outward from an upper portion of the coupling portion of the second cartridge, and the second hook protrudes outwardly from the first hook protrusion, A second upper protrusion formed with a lower hook or groove and a second lower protrusion protruding outward from a lower portion of the coupling portion of the second cartridge and formed with an upper hook or groove so as to be in face-to-face engagement with the first upper protrusion can do.

The plurality of first upper protrusions and the first lower protrusions may be provided in the first cartridge, and the second upper protrusions and the second lower protrusions may be respectively provided in the second cartridge. have.

In addition, the first upper protrusion and the first lower protrusion may be disposed alternately along the coupling portion of the first cartridge.

The first hook coupling portion and the second hook coupling portion may each include a plurality of hooks and a plurality of grooves.

In addition, at least one of the first hook engagement portion and the second hook engagement portion may be arranged alternately with a hook or groove for mutual engagement along the engagement portion.

In addition, the secondary battery is a quadrangular pouch type secondary battery, and the first cartridge and the second cartridge may be located at different portions with respect to a long side of the pouch type secondary battery.

In addition, both the positive electrode lead and the negative electrode lead of the secondary battery may be configured to protrude outward from the inside of the second cartridge, and the area of the second cooling plate may be smaller than the area of the first cooling plate.

The second cartridge may further include a second -2 bolt coupling portion having a vertical through hole formed on an opposite side of a side coupled with the first cartridge, wherein the cartridge for a secondary battery according to the present invention includes: A third frame having a third cooling plate, a third frame configured to surround an outer periphery of the third cooling plate, and a third bolt coupling portion provided in the third frame and having a vertical through hole, A through hole of the second bolt coupling portion is connected to a through hole of the third bolt coupling portion when side coupling is performed, and another portion of the secondary battery is accommodated in an internal space formed by the third frame And a third cartridge which is provided in the cartridge body.

According to another aspect of the present invention, there is provided a battery module for a secondary battery according to the present invention.

According to another aspect of the present invention, there is provided a battery pack for a secondary battery according to the present invention.

According to another aspect of the present invention, there is provided an automobile comprising a cartridge for a secondary battery according to the present invention.

According to an aspect of the present invention, a cooling plate is provided in the cartridge itself so that only the cartridge needs to be laminated when the battery module is constructed, and a separate structure or process for interposing the cooling plate between the secondary batteries is not required.

Therefore, according to this aspect of the present invention, the configuration of the battery module using the stacked cartridge for a secondary battery can be performed more easily, and the structure of the battery module can be further simplified.

In particular, according to one aspect of the present invention, a cartridge is divided on the basis of one secondary battery, and the divided unit cartridges are configured to be coupled. In such a cartridge configuration, since the cooling plate is also configured in a divided form, the size of the cooling plate is reduced on the basis of one secondary battery, so that the possibility of deformation of the cooling plate can be more effectively reduced.

Further, when the pouch-type secondary battery is viewed from the upper side to the lower side, the shape of the pouch-type secondary battery is generally rectangular. In a case where a plurality of cartridges exist in a form of dividing the long side of the secondary battery into plural pieces, Can be reduced.

Therefore, according to the present invention, the cooling channel is prevented from being clogged or narrowed due to the deformation of the cooling plate, whereby the cooling channel around the cooling plate can be stably secured and the surface area of the secondary battery and the cooling plate is kept wide The distance can be kept constant and the cooling performance of the secondary battery through the cooling plate can be stably secured.

According to an aspect of the present invention, a plurality of divided unit cartridges are combined to constitute one cartridge, wherein bolt coupling and / or hook coupling is performed between the unit cartridges. Further, in an embodiment of the present invention, such bolt coupling and / or hook coupling is fastened in a zigzag shape, thereby preventing warpage after assembly of the unit cartridge, imparting structural stability to the twisting force, have.

On the other hand, according to one aspect of the present invention, two secondary batteries are accommodated in one secondary battery stacking cartridge, and an upper plate, a lower plate, and two cooling plates are positioned between the two secondary batteries. Therefore, since each secondary battery has a separate cooling plate, the cooling efficiency of the secondary battery can be further improved.

Further, according to this embodiment of the present invention, since the cooling flow path is formed between the two cooling plates, the cooling flow path can be stably secured adjacent to the cooling plate, and the flow of the fluid through the cooling flow path can be smoothly maintained.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further the understanding of the technical idea of the invention, And should not be construed as limiting.
1 is an assembled perspective view schematically showing a configuration of a secondary battery cartridge according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of the configuration of Fig. 1. Fig.
FIG. 3 is a cross-sectional view schematically showing a coupling structure of a first bolt coupling part and a second bolt coupling part according to an embodiment of the present invention.
4 is a top view schematically showing a configuration in which a secondary battery is accommodated in the secondary battery cartridge shown in Fig.
Fig. 5 is a view showing only a cooling plate configuration in the secondary battery cartridge configuration of Fig. 1. Fig.
Fig. 6 is an enlarged view of the engaging portion in the cartridge structure of Fig. 2; Fig.
7 is a perspective view showing a configuration in which the first cooling plate and the second cooling plate are partially removed in the configuration of Fig. 1. Fig.
8 is an assembled perspective view schematically showing a configuration of a battery module according to an embodiment of the present invention.
Fig. 9 is an exploded perspective view of the configuration of Fig. 8. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

The secondary battery cartridge according to the present invention is used when a plurality of secondary batteries are stacked and packaged to constitute a battery module, thereby holding the secondary battery to prevent its flow and guide the assembling of the secondary battery.

FIG. 1 is an assembled perspective view schematically showing the configuration of a secondary battery cartridge 1000 according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the configuration of FIG.

Referring to FIGS. 1 and 2, a secondary battery cartridge 1000 according to the present invention includes a first cartridge 100 and a second cartridge 200. 1 is a view showing a configuration in which a first cartridge 100 and a second cartridge 200 are combined and FIG. 2 is a view showing a state in which the first cartridge 100 and the second cartridge 200 are separated Fig.

The first cartridge 100 includes a first cooling plate 120, a first frame 110, and a first bolt coupling part 130.

Here, the first cooling plate 120 is formed in a wide plate shape, and the large cooling plate 120 is laid down so that its large surface faces upward and downward. In particular, as shown in FIGS. 1 and 2, the first cooling plate 120 may have a rectangular shape as viewed from above.

The first cooling plate 120 may be made of a thermally conductive material to facilitate heat exchange with a secondary battery located nearby. In particular, the first cooling plate 120 may be made of an aluminum material that is excellent in thermal conductivity, easy to mold, and light in weight. However, the present invention is not limited to the material of the first cooling plate 120, and the first cooling plate 120 may be made of various other materials such as metal other than aluminum.

The first frame 110 may be configured to surround the outer periphery of the first cooling plate 120. Particularly, as shown in FIGS. 1 and 2, the first frame 110 may be formed in a rectangular ring shape having a central part hollowed out from the upper side to the lower side. An upper portion of the first cooling plate 120 may be exposed upward and a lower portion of the first cooling plate 120 may be exposed downwardly at an empty center portion of the first frame 110.

At this time, it can be considered that the first frame 110 is composed of four unit frames 1-1, 1-2, 1-3, 1-4 connected to each other at both ends. In this case, each unit frame may be located at each of the four sides of the first cooling plate 120. However, the present invention is not necessarily limited to these embodiments. For example, the first frame 110 may be composed of three unit frames and may be positioned on only three of four sides of the first cooling plate 120, respectively. Here, the side where the unit frame is not positioned may be referred to as a portion (1-2) coupled with the second cartridge 200.

The first frame 110 may be made of a polymer material such as plastic. The first frame 110 may be manufactured by injection molding with the first cooling plate 120 interposed therebetween. However, the present invention is not necessarily limited to such materials and manufacturing methods.

The first bolt coupling part 130 is provided on at least one side of the first frame. For example, as shown in FIGS. 1 and 2, the first bolt coupling part 130 includes corner parts where a 1-1 unit frame and a 1-4 unit frame are combined in a first frame, And may be provided at corner portions where the unit frame and the unit frame are combined.

In the first bolt coupling part 130, a through hole is formed at a central portion as indicated by H in the figure. The through hole may be formed such that bolts or the like can pass through in the vertical direction, that is, have.

The second cartridge 200 includes a second cooling plate 220, a second frame 210, and a second bolt coupling part 230. Such a second cartridge 200 may be configured in a similar form to the first cartridge 100 except for a part thereof.

For example, the second cooling plate 220 may be formed in a wide plate shape, and may be disposed in a lying-down form. Also, the second cooling plate 220 may have a rectangular shape. Also, the second cooling plate 220 may be made of a thermally conductive material such as aluminum.

In addition, the second frame 210 may be configured to surround the outer periphery of the second cooling plate 220. Like the first frame 110, the second frame 210 may be formed in a rectangular ring shape with its central portion being hollow, as viewed from the top downward. An upper portion of the second cooling plate 220 may be exposed in the upper direction and a lower portion of the second cooling plate 220 may be exposed in the lower direction in the hollow central portion of the second frame 210.

At this time, it can be considered that the second frame 210 is composed of four unit frames 2-1, 2-2, 2-3, and 2-4 connected to each other at both ends. In this case, each unit frame may be located on each of the four sides of the second cooling plate 220. Alternatively, the second frame 210 may be composed of three unit frames, and may be positioned on only three of the four sides of the second cooling plate 220, respectively. At this time, the side of the second cooling plate 220 on which the unit frame is not positioned may be regarded as a side 2-2 located at the portion to be coupled with the first cartridge 100.

The second frame 210 may be made of a polymer material such as plastic. The second frame 210 may be manufactured by injection molding with the second cooling plate 220 interposed therebetween.

The second bolt coupling part 230 is provided on at least one side of the second frame. For example, as shown in FIGS. 1 and 2, the second bolt coupling part 230 includes a corner part where a 2-1 unit frame and a 2-2 unit frame are combined in a second frame, and a 2-3 The unit frame and the 2-2 unit frame, respectively.

The second bolt coupling part 230 may be formed with a vertical through hole at a central portion thereof, like the first bolt coupling part 130.

The first cartridge 100 and the second cartridge 200 are physically separated from each other and are configured to be mutually engageable. In particular, the first cartridge 100 and the second cartridge 200 may be formed in the form that a frame exists on the outer circumferential surface of a plate-like cooling plate, as shown in Figs. 1 and 2, respectively. At this time, the first cartridge 100 and the second cartridge 200 may be coupled such that their side surfaces are in contact with each other in a state where both sides of the cooling plate are laid down so as to face upward and downward. That is, one side of the second cartridge 200 can be configured to be coupled with the other side of the first cartridge 100 in the lateral direction. For example, as shown in the figure, the 2-2 side of the four sides of the second cartridge 200 can be engaged with the 1-4 side of the first cartridge 100. [ Therefore, in this case, the first side of the first cartridge and the second side of the second cartridge may be referred to as a coupling portion of the first cartridge and the second cartridge, respectively.

According to an aspect of the present invention, when the first cartridge and the second cartridge are laterally engaged, the through hole of the second bolt coupling part 230 may be connected to the through hole of the first bolt coupling part 130. [ That is, as shown in FIG. 2, the separately manufactured first and second cartridges may be mutually side-engaged to form a shape as shown in FIG. 1. In such a coupling, the first bolt coupling portion 130 May be connected to each other through the through-holes of the second bolt coupling part 230. The through- To this end, the first bolt coupling portion 130 may be located at the upper or lower portion of the second bolt coupling portion 230.

Therefore, according to this configuration of the present invention, one fastening member, such as a bolt, can penetrate the through hole of the second bolt coupling part 230 while penetrating the through hole of the first bolt coupling part 130, So that the first cartridge and the second cartridge can be coupled and fixed to each other.

In particular, since the first cartridge and the second cartridge are stacked in the vertical direction, when the plurality of cartridges are stacked in the vertical direction to form the battery module, one long bolt is inserted into the first bolt coupling part 130 provided in each cartridge, And the through holes of the second bolt coupling part 230. [0051] As shown in FIG. Therefore, according to this configuration of the present invention, it is possible to fix the mutual coupling of the first cartridge and the second cartridge of each cartridge while fixing the coupling between the plurality of stacked cartridges by using one bolt.

Preferably, at least two first bolt coupling portions 130 may be provided. The two bolt coupling portions may be spaced apart from each other by a predetermined distance in the vertical direction. For example, referring to FIG. 2, the first bolt coupling part 130 located at the right end of the 1-1 unit frame has two sets of one bolt, As shown in FIG.

Here, the second bolt coupling part 230 may be interposed between the two first bolt coupling parts 130, which are vertically spaced apart from each other. That is, as shown in FIG. 1, when the second cartridge is coupled with the first cartridge, the second bolt coupling portion 230 can be inserted between the two first bolt coupling portions 130. At this time, the first bolt coupling part 130 may be positioned at the upper part and the lower part of the second bolt coupling part 230, respectively. In this case, the through holes of the second bolt coupling part 230 may be connected to the through holes of the two first bolt coupling parts 130. According to this configuration of the present invention, the first bolt coupling portion 130, the second bolt coupling portion 230, and the first bolt coupling portion 130 are alternately arranged in the vertical direction in the order of one bolt, The coupling force between the first cartridge and the second cartridge can be further strengthened. Particularly, according to this configuration of the present invention, it is possible to prevent problems such as mutual warping after the first cartridge and the second cartridge are coupled to each other.

Also, the first bolt coupling part 130 and the second bolt coupling part 230 may be configured such that at least a part of the first bolt coupling part 130 and the second bolt coupling part 230 are in contact with each other in the vertical direction. For example, as shown in FIG. 2, in a configuration in which one second bolt coupling portion 230 is inserted between two first bolt coupling portions 130, The upper surface of the second bolt coupling part 230 is configured to be in contact with the lower surface of the first bolt coupling part 130 located at the upper side and the lower surface of the second bolt coupling part 230 is configured to be in contact with the upper surface of the second bolt coupling part 230 located at the lower side .

Also, preferably, the first bolt coupling part 130 and the second bolt coupling part 230 may be located on both sides of the coupling part of the first cartridge and the second cartridge.

For example, as shown in FIG. 2, the first bolt coupling part 130 is provided on both sides of the 1-4 unit frame, that is, the front side end part of the 1-4 unit frame, As shown in Fig. In correspondence with the first bolt coupling portion 130, the second bolt coupling portion 230 is provided on both sides of the 2-2 unit frame, that is, the front side end portion of the 2-2 unit frame And the rear side end portion.

According to this embodiment of the present invention, since the bolt fastening structure is provided at both ends along the coupling portion of the first cartridge and the second cartridge, the coupling force between the first cartridge and the second cartridge can be formed more stably. That is, in the case of this embodiment of the present invention, the engagement of the first cartridge and the second cartridge can achieve stable overall engagement from the front side to the rear side.

Also, preferably, the first bolt coupling part 130 and / or the second bolt coupling part 230 may have protrusions protruding upward or downward.

FIG. 3 is a cross-sectional view schematically showing a combined structure of a first bolt coupling part 130 and a second bolt coupling part 230 according to an embodiment of the present invention. Fig. 3 is an example of a cross-sectional view taken along the line A in Fig.

Referring to FIG. 3, the second bolt coupling part 230 may be formed with a protrusion P protruding upward from the upper surface thereof. The second bolt coupling part 230 may have a protrusion P protruding downward from the lower surface thereof. The lateral movement of the first bolt coupling part 130 and the second bolt coupling part 230 can be prevented by the protrusion P formed in the second bolt coupling part 230, The coupling force between the first bolt coupling part 130 and the second bolt coupling part 230 can be further strengthened. The first bolt coupling part 130 and the second bolt coupling part 230 can be guided by the protrusion so that the first bolt coupling part 130 and the second bolt coupling part 230 The process of joining and the process of joining the bolt to the through hole can be performed more smoothly.

At this time, a groove may be formed in the first bolt coupling part 130 in a position and shape corresponding to the projection P of the second bolt coupling part 230. That is, the protrusions P of the first bolt coupling part 130 may be inserted into the upper surface of the first bolt coupling part 130 located on the lower surface and the lower surface of the first bolt coupling part 130 located on the upper side Grooves can be formed. As another example, protrusions may be formed on the upper surface of the first bolt coupling part 130 located at the upper and lower sides of the first bolt coupling part 130 located at the upper part.

As described above, the secondary battery cartridge 1000 according to the present invention may be configured in such a manner that the first cartridge 100 and the second cartridge 200 are coupled to each other. The first cartridge 100 and the second cartridge 200 The secondary battery can be entirely accommodated and protected. This will be described in more detail with reference to FIG.

4 is a top view schematically showing a configuration in which a secondary battery is accommodated in the secondary battery cartridge 1000 shown in Fig. In Fig. 4, the secondary battery 10 is shown side by side on the side of the cartridge 1000 so that the receiving position of the secondary battery 10 relative to the cartridge appears well.

Referring to FIG. 4, a cartridge 1000 for a secondary battery according to the present invention is configured in a manner that the first cartridge 100 and the second cartridge 200 are combined, and the first cartridge 100 and the second cartridge 200 200 are each composed of a separate frame and a cooling plate.

At this time, the inner space of the first cartridge 100 and the second cartridge 200 is formed by the respective frames. For example, in the first cartridge 100, the frame of the first cooling plate 120 is wrapped by the first frame 110, and the structure wrapped by the first frame 110 causes the inner space . A portion of the secondary battery 10, such as the left portion 11 of the secondary battery, may be accommodated in the inner space formed by the first frame 110 as described above. In addition, the second cartridge 200 can be formed with an inner space by the second frame 210, and the other part of the secondary battery, for example, the right part 12 of the secondary battery, . That is, the second cartridge 200 can receive another portion of the secondary battery that is not accommodated in the first cartridge 100.

As described above, in the case of the secondary battery cartridge 1000 according to the present invention, one cartridge includes a plurality of unit cartridges, that is, the first cartridge 100 and the second cartridge 200, and each unit cartridge is physically separated , And are configured to be mutually connectable. In order to fully accommodate at least one secondary battery, the first cartridge 100 and the second cartridge 200 must be combined. That is, the first cartridge 100 and the second cartridge 200 can only accommodate a part of the secondary battery, respectively, and can accommodate one secondary battery in a state in which they are combined.

Particularly, in the present invention, the first cartridge 100 and the second cartridge 200 each have a cooling plate separately from the frame. The cooling plate may be configured separately from each other even when the first cartridge 100 and the second cartridge 200 are engaged.

5 is a view showing only the cooling plate configuration in the secondary battery cartridge 1000 configuration of FIG.

5, the first cooling plate 120 and the second cooling plate 220 are separately provided in the first cartridge 100 and the second cartridge 200, respectively. Particularly, the first cooling plate 120 and the second cooling plate 220 are not coupled to each other even when the first cartridge 100 and the second cartridge 200 are coupled to each other to accommodate the secondary battery, . ≪ / RTI >

According to this aspect of the present invention, the size of the cooling plate can be reduced on the basis of the configuration of accommodating one secondary battery. In other words, when the cooling plate is located on the entire part of one secondary battery, one cooling plate must cover the entire area of the secondary battery, and therefore, the area of one cooling plate must be large. However, according to the present invention, since the plurality of cooling plates cover the different portions of the secondary battery with respect to the entire portion of one secondary battery, the area of one cooling plate can be reduced.

Thus, according to this aspect of the invention, the reduction in size of the cooling plate can significantly reduce deformation or damage of the cooling plate. Further, even if a portion of the cooling plate is deformed or damaged, it is prevented that the other cooling plate is deformed or damaged. For example, even if damage or deformation occurs in the first cooling plate 120, damage or deformation of the first cooling plate 120 does not affect the second cooling plate 220 .

Therefore, according to the present invention, the cooling passage formed around the cooling plate and the space between the cooling plate and the secondary battery are stably maintained, the cooling performance of the battery module can be effectively improved, and the structural rigidity of the battery module can be improved .

Preferably, the first cooling plate 120 and the second cooling plate 220 may be configured in the form of a plate having a substantially rectangular shape. 5, the first cooling plate 120 and the second cooling plate 220 have a shape in which the flat portion is laid down so as to face the upper portion and the lower portion and the lower portion is viewed from the upper portion to the lower portion And may be configured to have a substantially rectangular shape.

Corresponding to this cooling plate configuration, the first frame 110 and the second frame 210 may each have four unit frames. Each of the unit frames may be positioned on four sides of the first cooling plate 120 and the second cooling plate 220, respectively. For example, the first frame 110 may be composed of four unit frames, and each unit frame may be formed in a rod shape elongated in one direction. These unit frames are configured in such a manner that both ends of the unit frames are connected to each other, and can be positioned respectively on four sides of the first cooling plate 120 constituted by a quadrangle. Accordingly, the first frame 110 composed of four unit frames may be formed in the shape of a square ring as a whole with an empty central portion. The first cooling plate 120 may be exposed to an inner space defined by the first frame 110, that is, a central portion, and a portion of the secondary battery may be located in the inner space.

In this embodiment, the unit frame located at the portion where the first cartridge 100 and the second cartridge 200 are coupled to each other can be formed lower than the other unit frames.

For example, with respect to four unit frames constituting the first frame 110, a unit frame located in the front is referred to as a first unit frame, and a unit frame positioned on the left side is referred to as a first unit frame A unit frame located at the rear side is referred to as a first unit frame, and a unit frame located at the right side is referred to as a first-fourth unit frame. For the four unit frames constituting the second frame 210, a unit frame located in the front is referred to as a 2-1 unit frame, a unit frame located on the left side is referred to as a 2-2 unit frame, The second and third unit frames, and the unit frame located on the right side are referred to as a second-fourth unit frame. 2, one side portion, that is, the left side portion of the second cartridge 200 is coupled to the other side portion of the first cartridge 100, that is, the right side portion.

In this case, the unit frames located at the parts that mutually combine in the first cartridge 100 and the second cartridge 200 are the first 1-4 unit frame and the second 2-2 unit frame. The first to fourth unit frames and the second to second unit frames may be formed to be lower than the other unit frames of each cartridge.

For example, the first to fourth unit frames are configured to be lower in height than the other unit frames of the first cartridge 100, that is, the first-first unit frame, the first-second unit frame, and the first- . The 2-2 unit frame may be configured to be lower in height than the other unit frames of the second cartridge 200, that is, the 2-1 unit frame, the 2-3 unit frame, and the 2-4 unit frame .

This configuration of the present invention is different from the other unit frames in the case of the first to fourth unit frames and the second to second unit frames located at mutually coupled portions because the secondary battery body is located at the upper portion or the lower portion . That is, referring to FIG. 3, in the case of the first 1-4 unit frame and the second 2-2 unit frame, the central portion of the main body of the secondary battery is located. If the height of the first and second unit frames is excessively higher than that of the first cooling plate 120 and the second cooling plate 220, The two unit frames contact the central portion of the secondary battery, so that the secondary battery may bend or the storage space of the secondary battery may be narrowed. Therefore, it is preferable that the first 1-4 unit frame and the second 2-2 unit frame be formed lower than the other unit frames.

On the other hand, the first-first unit frame, the first-second unit frame, the first-third unit frame, the second-first unit frame, the second-second unit frame, And can be located near the body edge of the secondary battery. At least a part of the unit frames is configured to be higher than the first unit frame and the second unit frame so that the secondary battery located in the inner space is not exposed to the outside, The secondary battery can be configured to be safely protected.

Also preferably, the first cartridge and the second cartridge may each include a first hook engagement portion and a second hook engagement portion configured to be hookably engageable with each other in a mutually corresponding position and shape. This will be described in more detail with reference to FIG.

Fig. 6 is an enlarged view of the engaging portion in the cartridge structure of Fig. 2; Fig.

Referring to FIG. 6, the first cartridge 100 includes a first hook coupling portion 140 at a portion thereof coupled to the second cartridge 200. The second cartridge has a second hook engaging portion 240 at a portion corresponding to the first cartridge engaging portion 140 of the first cartridge.

For example, the second hook coupling portion 240 may include a hook H. The first hook coupling portion 140 may have a groove G in a position and shape corresponding to the hook so that the hook of the second hook coupling portion 240 can be fastened.

According to this configuration of the present invention, due to the hook-fastening structure of the first hook engagement portion 140 provided in the first cartridge and the second hook engagement portion 240 provided in the second cartridge, The fixing force to the side coupling structure can be further strengthened.

The first hook coupling portion 140 and the second hook coupling portion 240 may be coupled with each other before the first bolt coupling portion 130 and the second bolt coupling portion 230 are coupled to each other, The through hole of the first bolt coupling part 130 and the through hole of the second bolt coupling part 230 can be aligned so that the first bolt coupling part 130 and the second bolt coupling part 230 ) Can be performed more easily.

The first hook coupling portion 140 and the second hook coupling portion 240 may each include a plurality of hooks H and a plurality of grooves G. [

6, the first hook coupling portion 140 may include a plurality of grooves G, and the second hook coupling portion 240 may include a plurality of hooks H, have.

These hooks and grooves may be disposed at a predetermined distance from each other at the engaging portions of the respective cartridges.

According to this configuration of the present invention, a plurality of hooks can be formed at the coupling portion of the first cartridge and the second cartridge, so that the coupling force can be uniformly strengthened throughout the coupling portion.

In particular, the first hook coupling portion 140 may include a first upper protrusion 141 and a first lower protrusion 142.

Here, the first upper protrusion 141 may be provided so as to protrude outward from the upper portion of the engaging portion of the first cartridge, that is, to the side in which the second cartridge is located. The first upper protrusion 141 may be formed with a hook or a groove in a downward direction.

The first lower protrusion 142 may protrude outward from the lower portion of the engaging portion of the first cartridge. The first lower protrusion 142 may be formed with a hook or a groove in the upper direction.

The second hook coupling portion 240 may include a second upper protrusion 241 and a second lower protrusion 242.

Here, the second upper protrusion 241 may be provided so as to protrude outward from the upper portion of the engaging portion of the second cartridge, that is, toward the direction in which the first cartridge is located. The second upper protrusion 241 is formed at a position corresponding to the first lower protrusion 142 so as to be in face-to-face contact with the first lower protrusion 142, A groove or a hook can be formed so as to be fastenable to the frame.

In addition, the second lower protrusion 242 may protrude outward from the lower portion of the coupling portion of the second cartridge. The second upper protruding portion 242 is formed at a position corresponding to the first upper protruding portion 141 so as to be in face-to-face contact with the first upper protruding portion 141, A groove or a hook can be formed so as to be fastenable to the frame.

More specifically, the first upper protrusion 141 and the first lower protrusion 142 are respectively provided in the first cartridge, and the second upper protrusion 241 and the second lower protrusion 242 are respectively provided in the first cartridge, As shown in FIG.

6, the first hook coupling portion 140 may include two first upper protrusions 141 and three first lower protrusions 142. The first hook protrusion 141 may be formed of a first protrusion 141, At this time, each of the first upper protrusion 141 and the first lower protrusion 142 may have one groove. The second hook coupling portion 240 may include three second upper protrusions 241 and two second lower protrusions 242. At this time, one hook may be formed on the second upper protrusion 241 and the second lower protrusion 242, respectively. Accordingly, when the first cartridge and the second cartridge are engaged, the first upper protrusion 141 is engaged with the second lower protrusion 242 to face each other, and the first lower protrusion 142 is engaged with the second upper protrusion 141 (241) and can be fastened to each other.

According to this configuration of the present invention, since the protruding portions of the first cartridge and the second cartridge are protruded in the mutually facing directions, and the facing portions are hooked together, the coupling force of the cartridge is strengthened, In particular, it is possible to prevent the problem that the cartridge is easily twisted and damaged.

In addition, the first upper protrusion 141 and the first lower protrusion 142 may be arranged alternately along the coupling portion of the first cartridge. According to the arrangement of the engaging portions of the first cartridge, the second upper protrusion 241 and the second lower protrusion 242 of the second cartridge can be alternately arranged along the engaging portion of the second cartridge.

6, as the first cartridge moves from the front to the rear side, the first lower protrusion 142, the first upper protrusion 141, the first lower protrusion 142, The first upper projecting portion 141 and the first lower projecting portion 142 are alternately arranged in the order of the first upper projecting portion 141 and the first lower projecting portion 142. [

The second lower protrusion 241 and the second upper protrusion 241 are arranged in the order of the second upper protrusion 241, the second lower protrusion 242, the second upper protrusion 241, the second lower protrusion 242, 2 upper projecting portion 241 and second lower projecting portion 242 are alternately arranged.

According to this embodiment of the present invention, since the first and second cartridges are arranged so that the upper projection and the lower projection intersect at the respective coupling portions, the coupling force can be evenly distributed throughout the coupling portion, It is possible to stably cope with the force.

Also, the first hook coupling portion 140 may be alternately arranged with hooks and grooves along the coupling portion. For example, the first hook engaging portion 140, which is the engaging portion of the first cartridge, has hooks, grooves, hooks, grooves, and the like arranged alternately along the rear side from the front side .

In this case, the second hook engaging portion 240 can be alternately arranged with the groove and the hook along the engaging portion, corresponding to the shape of the first hook engaging portion 140. For example, the second hook engaging portion 240 can be arranged alternately along the back to front side in the order of grooves, hooks, grooves, hooks, ..., and so on.

According to this embodiment of the present invention, since the hooks and the grooves are arranged alternately, the fixing force is uniformly distributed along the coupling portion of the cartridge, and the supporting force corresponding to such force becomes strong even when the force is applied in either the upper or lower direction, It is possible to prevent the problem of being easily broken in one direction.

Meanwhile, as shown in FIG. 4, the secondary battery 10 may be a pouch-shaped secondary battery having a rectangular shape viewed from the upper side to the lower side. In this case, the pouch type secondary battery may be configured in a form having approximately four sides. Particularly, the pouch-type secondary battery may be configured in a rectangular shape. In this case, the pouch-type secondary battery may have two long sides and two short sides.

In this embodiment, the first cartridge 100 and the second cartridge 200 may be configured to be located at different portions with respect to the long side of the pouch type secondary battery. That is, the first cartridge 100 and the second cartridge 200 can be configured so that the long side of the pouch type secondary battery is divided into two parts and cover different parts. For example, when the upper and lower sides of the pouch-type secondary battery are configured to be longer than the sides located on the left and right sides, the first cartridge 100 and the second cartridge 200 are paired with each other, The first cartridge 100 covers the left side portion 11 of the pouch type secondary battery and the second cartridge 200 covers the left side portion 11 of the pouch type secondary battery. May be configured to cover the right side portion (12).

Even if the overall size of the cooling plate is not large, the shape of the cooling plate is likely to be deformed if the length is increased in one direction. According to the configuration of the present invention, it is possible to reduce the length of the cooling plate in one direction. Therefore, according to this configuration of the present invention, deformation of the cooling plate can be prevented, and the cooling efficiency by the cooling plate can be more stably secured.

Meanwhile, the secondary battery may include a cathode lead and a cathode lead in a protruding form. When the secondary battery is mounted on the cartridge, the positive lead and the negative lead may be configured to protrude outward from the inside of the cartridge for connection with an external device or connection between the secondary batteries.

At this time, the positive electrode lead and the negative electrode lead may be configured to be located only in one of the first cartridge 100 and the second cartridge 200. [ In particular, the pouch type secondary battery may be configured as a unidirectional secondary battery in which the positive electrode lead and the negative electrode lead are located on the same side of the pouch. In this case, the positive electrode lead and the negative electrode lead of the secondary battery may be located only in the cartridge of either the first cartridge 100 or the second cartridge 200.

Here, the first cartridge 100 or the second cartridge 200, in which both the positive electrode lead and the negative electrode lead are located, can be made smaller in size than the other cartridges. In particular, the first cartridge 100 or the second cartridge 200 in which both the positive electrode lead and the negative electrode lead are located can be configured so that the size of the cooling plate is smaller than that of the other unit cartridges.

3, the positive electrode lead L1 and the negative electrode lead L2 of the pouch type secondary battery are located only in the second cartridge 200, As shown in Fig. In this case, the second cartridge 200 may be configured to be smaller than the first cartridge 100, such that the area of the second cooling plate 220 is smaller than the area of the first cooling plate 120.

In the case of a secondary battery, particularly a pouch type secondary battery, the portion where the electrode lead is located may generate more heat than the other portions. 4, when the secondary battery is divided into a portion to be mounted on the first cartridge 100 and a portion to be mounted on the second cartridge 200, the positive electrode lead L1 and the negative electrode lead L2 A relatively large amount of heat may be generated in the portion of the second cartridge 200 mounted thereon than in the portion of the first cartridge 100 in which the electrode lead is not provided. In this case, if a cooling fluid such as air flows at a similar flow rate around the first cooling plate 120 and the second cooling plate 220, the area of the second cooling plate 220 is larger than that of the first cooling plate 120 The size of the flow rate per unit area can be larger than that of the first cooling plate 120 in the case of the second cooling plate 220. Therefore, it is possible to cause the cooling fluid to flow at a higher flow rate to the second cooling plate 220 where heat is generated relatively more. Therefore, according to this embodiment of the present invention, it is possible to reduce the occurrence of thermal imbalance as a whole in the secondary battery.

Preferably, the first cooling plate 120 provided in the first cartridge 100 and the second cooling plate 220 provided in the second cartridge 200 may each include an upper plate and a lower plate . This will be described in more detail with reference to Fig.

7 is a perspective view showing a configuration in which the first cooling plate 120 and the second cooling plate 220 are partially removed in the configuration of FIG.

Referring to FIGS. 5 and 7, the first cooling plate 120 and the second cooling plate 220 may each include two plates, that is, an upper plate and a lower plate. Hereinafter, the upper plate and the lower plate provided on the first cooling plate 120 will be referred to as a first upper plate 121 and a first lower plate 122, respectively. The upper plate and the lower plate provided on the second cooling plate 220 are referred to as a second upper plate 221 and a second lower plate 222 to be distinguished from each other. However, the parts that can be applied to the first upper plate 121 and the second upper plate 221, which are the same or similar, will not be distinguished from each other but are commonly referred to as an upper plate. In addition, the portions that can be applied to the first lower plate 122 and the second lower plate 222, which are the same or similar, will be referred to as a lower plate in common.

In the above embodiment of the present invention, the upper plate and the lower plate may be arranged in the form of a wide plate, and the wide side may be laid down so as to face upward and downward, respectively. And, the upper plate and the lower plate may be configured in the same form as each other, such as a square plate.

In particular, the upper plate and the lower plate may be spaced apart from each other by a predetermined distance in the vertical direction, with the wide surfaces facing each other. That is, the lower plate may be disposed so that a large surface faces the wide surface of the upper plate, while being spaced apart from the lower portion of the upper plate by a predetermined distance. Furthermore, the lower plate may be configured to be parallel to the upper plate in a horizontal direction.

According to the structure in which the upper plate and the lower plate are disposed apart from each other by a predetermined distance in the vertical direction, an empty space is formed between the upper plate and the lower plate. The empty space is a channel through which a fluid such as air can move Function. Particularly, a cooling fluid such as air flows in the empty space between the upper plate and the lower plate, thereby allowing heat exchange with the surrounding secondary battery through the upper plate and the lower plate. Therefore, the empty space between the upper plate and the lower plate can be a cooling channel.

5, the first cartridge 100 may be provided with an upper plate and a lower plate, and the second cartridge 200 may also include an upper plate and a lower plate. Therefore, the cooling passage may be formed in the first cartridge 100, and the cooling passage may be formed in the second cartridge 200 as well.

More preferably, both the first cartridge 100 and the second cartridge 200 may be provided with openings on the side surface of the frame so that at least a part of the cooling flow path formed between the upper plate and the lower plate is opened.

That is, in the first cartridge 100, the first frame 110 has the opening O1 on the side thereof so that at least a part of the cooling passage formed between the first upper plate 121 and the first lower plate 122 is opened . In the second cartridge 200, the second frame 210 has the opening O2 on the side thereof so that at least a portion of the cooling channel formed between the second upper plate 221 and the second lower plate 222 is opened .

For example, referring to FIGS. 2 and 7, the first unit frame located at the front side in the first cartridge 100 and the first and third unit frames located at the rear side are arranged in the horizontal direction That is, an opening penetrating in the inside and outside direction of the cartridge is formed. In other words, two openings are formed on the side surface of the first frame 110. In this embodiment, the opening of the first frame 110 allows the cooling passage formed in the first cartridge 100 to be exposed to the outside of the first cartridge 100. Therefore, the opening of the first frame 110 can function as an inlet and an outlet for the cooling flow passage.

In particular, the openings of the first frame 110 may be formed on side surfaces opposite to each other with reference to the secondary battery. For example, in FIG. 7, the two openings are formed in the first unit frame and the first unit frame, respectively, which are opposed to each other. In the case where the opening is located on the side opposite to the opening, the flow direction of the cooling fluid is formed in a straight line, and the cooling fluid can flow more smoothly, so that the cooling efficiency can be more stably secured.

2, similarly to the first cartridge 100, in the second cartridge 200, the second unit unit frame positioned in the front and the second unit unit frame unit located in the rear of the second cartridge unit 200 are arranged in a horizontal direction As shown in Fig. The opening formed in the second cartridge 200 may be a passage for exposing the cooling channel of the second cartridge 200 to the outside.

Also, preferably, the cooling flow path formed in the first cooling plate 120 and the cooling flow path formed in the second cooling plate 220 may be separated from each other.

5 and 7, the cooling flow path formed between the first upper plate 121 and the first lower plate 122 may be configured such that the front and rear are open and the side is closed have. The cooling flow path formed between the second upper plate 221 and the second lower plate 222 may be configured such that the front and rear sides thereof are opened and the side surfaces thereof are closed. At this time, the first upper plate 121 and the first lower plate 122 may be configured such that their side surfaces are folded and joined together to close the side surface. Also, the second upper plate 221 and the second lower plate 222 may be configured such that their side surfaces are folded and then bonded to each other, thereby closing the side surface. Particularly, since the right side surfaces of the first upper plate 121 and the first lower plate 122 and the left side surfaces of the second upper plate 221 and the second lower plate 222 are closed each other, And the flow path formed in the second cooling plate 220 may be physically separated without being connected to each other.

The first cooling plate 120 and the second cooling plate 220 may be provided with separate flow passages in a state where the first cartridge 100 and the second cartridge 200 are coupled to each other, have. In this case, a separate cooling fluid may flow in and out of the flow path formed in the first cooling plate 120 and the flow path formed in the second cooling plate 220, respectively. In particular, according to the configuration in which the flow path of the first cartridge 100 and the flow path of the second cartridge 200 are independently formed as described above, it is possible to adaptively change the temperature of the secondary battery Can cope. For example, when the temperature of the portion of the secondary battery mounted on the first cartridge 100 is higher than the temperature of the portion of the secondary battery 200 mounted on the second cartridge 200, The cooling fluid flows at a relatively large flow rate.

According to an embodiment of the present invention, in order to stably maintain the flow path formed between the upper cooling plate and the lower cooling plate, a beading portion B may be formed on the first cooling plate and / or the second cooling plate have.

In the cartridge configuration of the present invention, the first cartridge 100 and the second cartridge 200 are configured such that one pouch-type secondary battery is placed on the upper portion of the first cooling plate 120 and the second cooling plate 220 The first cooling plate 120, and the second cooling plate 220 may be mounted on the bottom of the first cooling plate 120 and the second cooling plate 220, respectively.

Also, preferably, the secondary battery cartridge 1000 according to the present invention may be composed of three or more unit cartridges. That is, in the above-described embodiment, the secondary battery cartridge 1000 is mainly described as an example in which the first cartridge 100 and the second cartridge 200 are composed of two unit cartridges. However, in such a secondary battery cartridge 1000, But may further include unit cartridges other than the first cartridge 100 and the second cartridge 200. [

In particular, the secondary battery cartridge 1000 according to the present invention may further include a third cartridge. The third cartridge may be configured in a similar form to the first cartridge 100 and the second cartridge 200. [ That is, the third cartridge includes a third cooling plate formed in a plate shape, a third frame configured to surround the outer periphery of the third cooling plate, and a third bolt coupling portion provided in the third frame and having a vertical through hole formed therein .

The third cartridge may be configured to be laterally engageable with at least one of the first cartridge 100 and the second cartridge 200. [ For example, the third cartridge may be configured to be coupled to the second cartridge 200, located on the opposite side of the side where the first cartridge 100 is positioned with respect to the second cartridge 200. [ 4, the third cartridge is located on the right side of the second cartridge 200 and is coupled with the second cartridge 200, thereby allowing the first cartridge 100, the second cartridge 200, And the third cartridge is combined to complete one secondary battery cartridge 1000. [

In this case, the second cartridge may further include a second -2 bolt coupling portion formed with a vertical through hole on the opposite side of the side coupled with the first cartridge. When the third cartridge is laterally engaged with the second cartridge, the through hole of the third bolt coupling portion may be connected to the through hole of the second -2 bolt coupling portion.

Therefore, the third cartridge can accommodate another part of the secondary battery in the inner space formed by the third frame. That is, with respect to one secondary battery, a part is located in the inner space of the first cartridge 100, the other part is located in the inner space of the second cartridge 200, and the remaining part is located in the inner space of the third cartridge 100 can do.

Meanwhile, the secondary battery cartridge 1000 may be configured so that two or more can be stacked. The secondary battery is accommodated in the internal space of the secondary battery cartridge 1000 formed by stacking two or more layers, so that the secondary battery cartridge 1000 can receive and protect the secondary battery. Particularly, the first frame 110 of the first cartridge 100 and the second frame 210 of the second cartridge 200 may be configured to protrude upwards and downwards from the cooling plate. The first frame 110 and the second frame 210 guide the stacking of the cartridges when the cartridges 1000 are stacked in the vertical direction so that the stacking state between the cartridges can be stably maintained. May be provided.

The battery module according to the present invention includes the aforementioned cartridge for a secondary battery 1000 described above.

FIG. 8 is an assembled perspective view schematically showing a configuration of a battery module according to an embodiment of the present invention, and FIG. 9 is an exploded perspective view of the configuration of FIG.

8 and 9, a battery module according to the present invention may be configured such that a plurality of secondary battery cartridge 1000 according to the present invention are stacked, and a secondary battery is accommodated in an internal space formed by stacking have. That is, the battery module according to the present invention may include the secondary battery cartridge 1000 and the secondary battery according to the present invention.

Further, the battery module according to the present invention may include a plurality of pouch type secondary batteries. The battery module according to an embodiment of the present invention may be configured to accommodate two pouch-shaped secondary batteries per one secondary battery cartridge 1000.

The battery module according to the present invention may further include an inlet duct 300 and an outlet duct 400 in addition to the secondary battery cartridge 1000 and the secondary battery. Here, the inflow duct 300 is provided in an opening portion of the cooling passage formed in the cartridge, and can function as a space and a passage for allowing the fluid to flow into the cooling passage. The outflow duct 400 can be provided in another opening portion of the cooling passage formed in the cartridge, and can function as a space and a passage for allowing the fluid flowing in the cooling passage to flow out to the outside of the battery module. Particularly, in the cartridge according to an embodiment of the present invention, openings may be formed on one side of the first frame 110 and the second frame 210, and the inflow duct 300 and the inflow duct 400 may be formed in such a manner that, And may be provided on the side where the opening is formed.

The inflow duct 310 and the inflow duct 410 may be formed in the inflow duct 300 and the inflow duct 400 to allow the cooling fluid to flow in and out between the inside and the outside of the battery module. In addition, the inlet duct 300 and the outlet duct 400 may include a fan 420 to smoothly guide the flow of the fluid.

In particular, in the present invention, as shown in FIGS. 6 and 7, two inlet ducts 300 and two outlet ducts 400 may be provided. That is, the secondary battery cartridge 1000 according to the present invention may include the first cartridge 100 and the second cartridge 200, and two unit cartridges. Each of the unit cartridges has a separate cooling channel can do. Therefore, the battery module according to the present invention has two inlet ducts 300, two outlet ducts 400, one inlet duct 300 and one outlet duct 400, The cartridge 100 may be located on the stacked side and the other one inlet duct 300 and the other one outlet duct 400 may be located on the side where the second cartridge 200 is stacked.

On the other hand, the inlet duct 300 and the outlet duct 400 can be fastened to the cartridge, as shown in Fig. However, the present invention is not limited by the fastening method of the inlet duct 300 and the outlet duct 400.

In addition, the battery module according to the present invention may further include a temperature sensor for measuring the temperature of the first cartridge 100 and the temperature of the second cartridge 200. The battery module according to the present invention may further include a blower unit for supplying a cooling fluid to the flow path of the cartridge. For example, the battery module according to the present invention may include a fan as a blower unit, which may be a component located inside the inlet duct 300 and / or the outlet duct 400. Particularly, such a blower unit can be classified into a configuration for supplying the cooling fluid to the first cartridge 100 and a configuration for supplying the cooling fluid to the second cartridge 200. [ For example, the blower unit may include a first blower unit and a second blower unit. The first blower unit may be a fan located in the outflow duct 400 on the first cartridge 100 side and the second blower unit may have a fan located in the outflow duct 400 on the second cartridge 200 side .

Furthermore, the battery module according to the present invention may further comprise a control unit for controlling the blower unit. In particular, the control unit may receive temperature information from a temperature sensor and control the blower unit using the temperature information. For example, the control unit can receive the temperature information of the first cartridge 100 and the temperature information of the second cartridge 200 from the temperature sensor.

Then, the control unit can compare the temperature of the first cartridge 100 with the temperature of the second cartridge 200. [ Then, the control unit can cause a larger amount of cooling gas to flow through the cooling channel of the unit cartridge having a relatively high temperature. For example, when the temperature of the second cartridge 200 is higher than the temperature of the first cartridge 100, the control unit controls the blower unit so that the second cartridge 200 ) Side cooling flow path. Here, the control of the blower unit may be performed in such a manner as to control the rotation speed of the fan, the number of operation of the fan, and the like.

The battery module according to the present invention may further include a sensing assembly 500, as shown in FIGS. Here, the sensing assembly 500 can measure the electrical characteristics of the secondary battery housed in the secondary battery cartridge 1000, such as voltage or current. To this end, the sensing assembly 500 may be connected to the electrode leads of the respective secondary batteries.

In addition, the battery module according to the present invention may further include an end plate 600, as shown in FIGS. 8 and 9. Here, the end plate 600 may be formed in the form of a plate having an approximately large area, and may be disposed at an upper portion and / or a lower portion of the battery module to cover the upper and lower portions of the plurality of stacked cartridges and the secondary battery. have. The end plate 600 provides a mechanical support force for the battery module and protects the secondary battery from external shocks at the upper and lower portions of the secondary battery. For this purpose, the end plate 600 may be made of a metal material such as steel for securing rigidity.

The battery pack according to the present invention may include at least one battery module according to the present invention. The battery module may include a plurality of secondary battery cartridges according to the present invention. In addition, the battery pack according to the present invention may include a case for accommodating such a battery module, various devices for controlling charge and discharge of the battery module, such as a battery management system (BMS), a current sensor, a fuse, . ≪ / RTI >

The secondary battery cartridge according to the present invention can be applied to an automobile such as an electric car or a hybrid car. That is, the automobile according to the present invention may include a battery pack according to the present invention, and such a battery pack may include a cartridge for a secondary battery according to the present invention.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

In the present specification, when terms such as upward, downward, leftward, rightward, forward, and backward are used, these terms are for convenience of explanation only and are not limited to the position of the object to be viewed or the position of the observer It is apparent to those skilled in the art that the present invention is not limited thereto.

10: Secondary battery
100: First cartridge
110: first frame
120: first cooling plate
130: first bolt connecting portion
140: first hook coupling portion
200: Second cartridge
210: second frame
220: second cooling plate
230: second bolt coupling portion
240: second hook coupling portion

Claims (15)

A first cooling plate having a plate shape, a first frame configured to surround an outer periphery of the first cooling plate, and a first bolt coupling portion provided in the first frame and having a vertical through hole, A first cartridge accommodating a part of the secondary battery in an internal space formed by the frame; And
A second cooling plate formed in a plate shape, a second frame configured to surround an outer peripheral portion of the second cooling plate, and a second bolt coupling portion provided in the second frame and having a vertical through hole, Wherein a through hole of the second bolt coupling portion is connected to a through hole of the first bolt coupling portion when the side coupling is performed, and another portion of the secondary battery is inserted into the internal space defined by the second frame The second cartridge
And a plurality of protrusions formed on the first and second protrusions. The method according to claim 1,
At least two of the first bolt connecting portions are arranged to be spaced apart from each other by a predetermined distance in the vertical direction,
Wherein the second bolt coupling portion is inserted between the first bolt coupling portions spaced apart in the vertical direction so that the through hole is connected to the through hole of the first bolt coupling portion. The method according to claim 1,
Wherein the first bolt coupling portion and the second bolt coupling portion are located on both sides of the coupling portion of the first cartridge and the second cartridge, respectively. The method according to claim 1,
Wherein the first cartridge and the second cartridge each have a first hook engagement portion and a second hook engagement portion configured to be hookable in mutually corresponding positions and shapes. 5. The method of claim 4,
The first hook coupling portion includes a first upper protrusion protruding outward from an upper portion of the coupling portion of the first cartridge and having a lower hook or groove formed thereon, and a second upper protrusion protruding outward from the lower portion of the coupling portion of the first cartridge. And a first lower protrusion formed with an upward direction hook or groove,
The second hook engaging portion includes a second upper protruding portion protruding outward from an upper portion of the coupling portion of the second cartridge and having a downward hook or groove formed to be in face-to-face engagement with the first lower protruding portion, And a second lower protrusion protruding outwardly from a lower portion of the lower protrusion and having an upper direction hook or groove formed in a face-to-face relationship with the first upper protrusion. 6. The method of claim 5,
Wherein the first upper protrusion and the first lower protrusion are respectively provided in the first cartridge,
Wherein the second upper protrusion and the second lower protrusion are respectively provided in the second cartridge. 6. The method of claim 5,
Wherein the first upper protrusion and the first lower protrusion are alternately arranged along an engaging portion of the first cartridge. 5. The method of claim 4,
Wherein the first hook coupling portion and the second hook coupling portion each have a plurality of hooks and a plurality of grooves. 5. The method of claim 4,
Wherein at least one of the first hook engaging portion and the second hook engaging portion is alternately arranged with hooks or grooves for engaging with each other along the engaging portion. The method according to claim 1,
The secondary battery is a quadrangular pouch type secondary battery,
Wherein the first cartridge and the second cartridge are located at different portions with respect to a long side of the pouch type secondary battery. The method according to claim 1,
Wherein the positive electrode lead and the negative electrode lead of the secondary battery protrude outward from the inside of the second cartridge and the area of the second cooling plate is smaller than the area of the first cooling plate. cartridge. The method according to claim 1,
The second cartridge further includes a second -2 bolt coupling portion having a vertical through hole formed on an opposite side of a side coupled with the first cartridge,
A third cooling plate formed in a plate shape, a third frame configured to surround the outer periphery of the third cooling plate, and a third bolt coupling portion provided in the third frame and having a vertical through hole formed therein, Wherein a through hole of the second-2 bolt coupling portion is connected to a through-hole of the third bolt coupling portion when the side coupling is performed, and a through hole is formed in the inner space formed by the third frame, And a third cartridge for accommodating another portion of the cartridge. A battery module comprising the secondary battery cartridge according to any one of claims 1 to 12. A battery pack comprising the secondary battery cartridge according to any one of claims 1 to 12. 13. A vehicle comprising the cartridge for a secondary battery according to any one of claims 1 to 12.

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