KR101702505B1 - Battery module and battery pack including the same - Google Patents

Abstract

The present invention discloses a battery module that can temporarily fix a wire during an assembly process, thereby improving the fairness and convenience of assembly. A battery module according to the present invention includes: a cell assembly having a plurality of cartridges stacked in one direction and a plurality of secondary cells housed in an inner space of the stacked cartridges; And a side attachment unit mounted on a side surface of the cell assembly, the side attachment unit having a wire formed in a protruding shape extending in one direction and having a wire attachment / detachment part configured to allow at least a part of the wire to be detachable.

Description

[0001] The present invention relates to a battery module and a battery pack including the battery module,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery, and more particularly, to a battery module having an improved structure to improve assemblability, a battery pack including the battery module, an automobile, and a method of manufacturing the battery pack.

2. Description of the Related Art In recent years, demand for portable electronic products such as notebook computers, video cameras, and portable telephones has rapidly increased, and electric vehicles, storage batteries for energy storage, robots, and satellites have been developed in earnest. Are being studied actively.

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. Particularly, as carbon energy is getting depleted and the interest in the environment is increasing, attention is focused on hybrid cars and electric cars worldwide, including the US, Europe, Japan, and Korea. The most important components in such hybrid vehicles and electric vehicles are battery packs that give drive power to vehicle motors. Since hybrid vehicles and electric vehicles can obtain the driving force of the vehicle through charging and discharging of the battery pack, the fuel efficiency is higher than that of the vehicle using only the engine, and the users are increasingly increasing in terms of not discharging or reducing pollutants. to be. The battery pack of the hybrid vehicle or the electric vehicle includes a plurality of secondary batteries, and the plurality of secondary batteries are connected in series and in parallel to improve capacity and output. The battery module may be referred to as a component in which a plurality of secondary batteries are connected in series or in parallel in order to increase capacity and output.

The battery module may be provided with one or more wires protruding therefrom. Here, the wire may be for supplying power to a specific component provided in the battery module, or may be for transmitting information on the electrical characteristics of the secondary battery provided in the battery module to other components outside the battery module .

On the other hand, the battery module may be assembled together with other components such as a plurality of electrical parts and housed inside the pack case to be manufactured as a battery pack. However, when the battery module is assembled with other components or housed inside the pack case, the wires provided in the battery module may deteriorate the assemblability of the battery module. Particularly, when the wire is formed in a protruding shape extending upward in the direction of the battery module, when the other component is mounted on the top of the battery module, the wire can be caught between the battery module and the component mounted on the battery module, It is possible to interrupt the assembling process or increase the defective rate of the battery pack.

Therefore, according to the conventional battery module structure, there is a problem that the manufacturing process of the battery pack becomes complicated due to the wire, and the assembling property such as a time-consuming process is lowered and the defect rate is increased.

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 battery module that improves the fairness and convenience of assembly by temporarily fixing the wire during the assembling process, And a method for manufacturing a battery pack.

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 an aspect of the present invention, there is provided a battery module comprising: a cell assembly including a plurality of cartridges stacked in one direction and a plurality of secondary cells accommodated in an inner space of the stacked cartridges; And a side attachment unit mounted on a side surface of the cell assembly, the side attachment unit having a wire formed in a protruding shape extending in one direction and having a wire attachment / detachment part configured to allow at least a part of the wire to be detachable.

Preferably, the wire detachment portion is configured such that, when the wire is mounted, the mounted wire is positioned at a portion other than the upper portion of the cell assembly.

Preferably, the wire detachable portion includes an insertion portion in which the wire is inserted and fixed.

Further, preferably, the inserting portion is configured such that the wire is engaged.

Preferably, the inserting portion is formed so that the seating direction of the wire is inclined from the inner side to the outer side so that the end portion of the inserted wire faces the outward direction.

Further, preferably, the wire detachable portion includes a latching portion configured to allow the wire to be wound and bent.

Preferably, the wire detachable portion includes a Velcro tape.

Also, preferably, the wire detachment unit is configured such that the wire is mounted before an electric plate on which at least one of a BMS, a current sensor, a relay, and a fuse is mounted on an upper portion of the cell assembly, And the wire is configured to be released after being assembled to the top of the cell assembly.

Also preferably, the wire is connected to the electric field plate.

Preferably, the side mounting unit further comprises an inlet duct formed on the outer side and an opening formed on the inner side so that the fluid introduced through the inlet is drawn into the cell assembly through the opening, And at least one of the inflow duct and the outflow duct is formed in the inner space so that the fluid discharged from the cell assembly is introduced into the open space and discharged through the outflow opening, And a fan for accelerating the flow of the fluid, wherein the wire provides a path for supplying operating power to the fan.

Preferably, the inflow port of the inflow duct and the outflow port of the outflow duct protrude upward from the upper surface of the cell assembly, and the wire detachable portion is formed on at least one of the inflow port and the outflow port.

Preferably, the side mounting unit includes a sensing assembly for sensing a voltage of the secondary battery in contact with an electrode lead of a secondary battery included in the cell assembly, wherein the wire is connected to a voltage Provide a path to transfer information.

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

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

According to another aspect of the present invention, there is provided a method of manufacturing a battery pack, including: a cell assembly including a plurality of cartridges stacked in one direction and a plurality of secondary cells housed in an inner space of the stacked cartridges; A side mounting unit having a wire attachment / detachment unit mounted on a side surface of the cell assembly and configured to extend in one direction to form a protruding shape and configured so that at least a part of the wire is detachable; Mounting a wire of the battery module to a wire detachment portion of the battery module; Assembling an electric field plate having an upper portion on which at least one of a BMS, a current sensor, a relay, and a fuse is mounted on an upper portion of the battery module; And releasing the wire from the wire detachable portion.

According to an aspect of the present invention, when one or more battery modules are assembled together with other components such as electrical components to form a battery pack, the assemblability can be improved.

Particularly, according to one embodiment of the present invention, in the form of assembling the battery pack in such a manner that the BMS, the current sensor, the relay, the fuse, etc. are mounted on one electric plate and the electric plate is placed on the top of the battery module, The assemblability can be further improved. That is, according to the present invention, the wires provided in the battery module are temporarily fixed so as not to be positioned on the upper part of the battery module before the electric plate is assembled to the battery module. When the electric module and the battery module are assembled, It can be prevented from being caught. Then, after the electric plate and the battery module are assembled, the fixed state of the wire is released so that the wire can be connected to a position where the wire should be originally connected.

Therefore, according to this aspect of the present invention, the assembling process of the battery module and the electric plate is facilitated, the time required for the assembling is shortened, and the defect rate generated during assembly can be reduced. Therefore, according to the present invention, the productivity of the battery pack can be improved.

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 exploded perspective view schematically showing a configuration of a battery module according to an embodiment of the present invention.
Fig. 2 is a combined view of the configuration of Fig. 1. Fig.
3 is an exploded perspective view schematically showing a configuration in which a battery module according to an embodiment of the present invention is assembled with other components.
4 is an assembled perspective view of Fig.
5 is a top view of the configuration of Fig. 3. Fig.
Fig. 6 is an enlarged view of part A of Fig. 2. Fig.
Fig. 7 is a view showing a configuration in which a wire is attached to a wire detachable portion in the configuration of Fig. 6;
Fig. 8 is a view of the configuration of Fig. 7 viewed from above.
9 is a view showing an example of a cross-sectional shape taken along line CC 'in Fig.
10 is a top view schematically showing the configuration of a wire detachable portion according to another embodiment of the present invention.
11 is a top view schematically showing a configuration of a wire detachable portion according to still another embodiment of the present invention.
12 is a perspective view schematically showing a configuration of a wire detachable portion according to another embodiment of the present invention.
13 is a flowchart schematically showing a method of manufacturing a battery pack according to an embodiment of the present invention.

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 interpreted 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.

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

Referring to FIGS. 1 and 2, a battery module 1000 according to the present invention includes a cell assembly 100 and a side mount unit 200.

The cell assembly 100 includes at least one secondary battery. In particular, in the battery module 1000, the cell assembly 100 may be an aggregate of secondary cells having a plurality of secondary cells. Here, the secondary battery included in the cell assembly 100 may be a pouch type secondary battery. In this case, the pouch type secondary battery may be formed in a stacked manner in one direction, such as a vertical direction as shown in the figure.

Meanwhile, the cell assembly 100 may include a cartridge 120 for stacking the pouch type secondary battery. Here, the cartridge 120 is a component used for laminating the secondary batteries, and is configured to hold the secondary batteries to prevent the secondary batteries from flowing, and to stack the secondary batteries, thereby guiding the assembly of the secondary batteries.

Such a cartridge 120 may be replaced with various other terms such as a lamination frame, and may be configured such that a plurality of units can be stacked in one direction for stacking the secondary batteries. Particularly, when the cartridge 120 is stacked, an empty space is formed in a central portion rather than a rim, and the secondary battery can be housed in the internal space. Therefore, when the plurality of cartridges 120 are stacked to form the cell assembly 100, the secondary battery is wrapped by the cartridge 120 and can be configured not to be exposed to the outside, as shown in the figure.

In FIGS. 1 and 2, the secondary batteries are stacked in the vertical direction, but it is needless to say that the secondary batteries may be stacked in various other forms such as a horizontal direction.

The side mount unit 200 is a component mounted on a side surface of the cell assembly 100. That is, in the case where the cell assembly 100 is configured such that the cartridge 120 and the secondary battery are stacked in one direction, the cell assembly 100 includes four, front, rear, left, And may be composed of a side surface, an upper surface, and a lower surface. At this time, the side mounting unit 200 is a component mounted on at least one of the four sides of the cell assembly 100.

For example, in the configurations of Figs. 1 and 2, the two side-mounting units 200 are shown coupled to the front-end side and the rear-end side of the cell assembly 100, respectively. Also, in the configurations of FIGS. 1 and 2, another separate side mounting unit 200 is shown mounted on the right side of the cell assembly 100. As described above, the side mount unit 200 can be mounted on the side surface of the cell assembly 100 to perform respective functions.

Preferably, the side mount unit 200 may include an inlet duct 210 and an outlet duct 220.

Here, the inlet duct 210 may be positioned on one side of the cell assembly 100 to cover the corresponding side of the cell assembly 100. For example, in the configuration shown in FIGS. 1 and 2, the inlet duct 210 may be configured to cover the front end side of the cell assembly 100. To this end, the inlet duct 210 may be configured in a shape and size corresponding to the front end side of the cell assembly 100.

The inlet duct 210 is a component for allowing a cooling fluid such as air to flow into the cell assembly 100. The inlet duct 210 may have an inlet 211 formed outside the battery module 1000 to allow the fluid outside the battery module 1000 to flow into the internal space of the inlet duct 210 through the inlet 211 . The inlet duct 210 is formed with an opening 212 facing the cell assembly 100 so that the fluid introduced into the interior space flows through the opening 212 into the cell assembly 100 As shown in FIG.

The outflow duct 220 may be positioned on the other side of the cell assembly 100 to cover the other side of the cell assembly 100. Particularly, the outflow duct 220 may be located on the opposite side of the four sides of the cell assembly 100 on the side where the inflow duct 210 is located. For example, the outlet duct 220 may be configured to cover the rear end side of the cell assembly 100. To this end, the outlet duct 220 may be configured in a shape and size corresponding to the rear side of the cell assembly 100. According to this embodiment of the present invention, the flow of the cooling fluid flowing from the inflow duct 210 to the outflow duct 220 becomes a straight line, and the flow of the fluid can be smoothly performed. Therefore, the cooling performance through the cooling fluid can be stably secured.

The outflow duct 220 is formed with an opening 222 facing the cell assembly 100 to perform heat exchange with the secondary battery through the cell assembly 100 directly or indirectly, So that it can be drawn into the inner space of the outlet duct 220 through the opening 222. The outflow duct 220 is formed on the outer side of the outlet duct 220 so that the fluid introduced into the inner space can be discharged to the outside of the battery module 1000 through the outlet 221.

Further, according to an aspect of the present invention, one or more cooling passages (P) may be formed in the cell assembly (100). At least the both sides of the cooling passage P are opened, and the inlet duct 210 is located at one opened end and the outlet duct 220 at the other opened end. Therefore, the fluid introduced through the inlet duct 210 can enter the cooling channel P of the cell assembly 100, and can perform heat exchange with the secondary cell directly or indirectly while flowing along the cooling channel. The fluid that has flowed through the cooling passage P of the cell assembly 100 can be discharged to the outside of the battery module 1000 through the outlet duct 220.

In an embodiment where the battery module 1000 includes the inflow duct 210 and the inflow duct 220, at least one of the inflow duct 210 and the inflow duct 220 may be provided with a fan. For example, as shown in FIG. 1, a plurality of fans F may be provided in the inner space of the outflow duct 220. The fan F accelerates the flow of the fluid in the inner space of the outlet duct 220 so that the cooling fluid such as air flows more smoothly. In addition, although not shown in the drawing, the inlet duct 210 may also include a fan (F).

Meanwhile, the battery module 1000 may include one or more wires 240. Here, the wire 240 may be a component that is a path through which electric current flows, such as a power supply or an electric signal transmission. In particular, the side mount unit 200 may include a wire 240, which may be configured to extend in one direction and be protruded. For example, if the side mount unit 200 includes an inlet duct 210 and / or an outlet duct 220 with a fan, as shown in the figures, such inlet duct 210 and / The outlet duct 220 may include a wire 240 as a path for supplying operating power to the fan to operate the fan.

The wire 240 may be formed to extend in one direction and may have one or more strands of wire bundled together. The wire 240 is connected to the outside of the side mounting unit 200 so that the other end can be connected to another component located outside the side mounting unit 200 while one end is connected to the side mounting unit 200 And a connector 241 for connection with an external component may be provided at an end thereof.

In particular, in the battery module 1000 according to the present invention, the side attachment unit 200 has a wire detachable portion 250 formed thereon. The wire detachable part 250 is a part configured to freely attach or detach at least a part of the wire provided in the battery module 1000, particularly, the wire 240 provided in the side mounting unit 200. Furthermore, the wire detachable portion 250 can be configured such that, when a part of the wire 240 is mounted, the mounted portion is fixed without moving.

Therefore, according to the present invention, the wire can be fixed to the wire detachable part 250 arbitrarily during the process of assembling other components in the battery module 1000, thereby preventing the assembly process from being disturbed by the wire 240 .

In particular, in the case of a battery pack according to an embodiment of the present invention, other components may be assembled on top of the battery module 1000, which will be described in more detail with reference to FIG. 3 .

3 is an exploded perspective view schematically showing a configuration in which a battery module 1000 according to an embodiment of the present invention is assembled with other components, and FIG. 4 is an assembled perspective view of FIG.

3 and 4, a battery pack may be assembled in such a manner that other components are mounted on the upper part of the battery module 1000 including the cell assembly 100 and the side mounting unit 200. [

In particular, the battery pack may include various electrical components such as a BMS (Battery Management System), a current sensor, a relay, and a fuse, and these electrical components are also referred to as electrical components. In the case of the battery pack according to the present invention, the electrical components may be mounted on a single plate, and the plate on which the electrical component is mounted may be referred to as an electric plate 2000. That is, the electric field plate 2000 is a component having a plate shape having a wide surface on the upper and lower sides, and an electric component mounted on a wide upper surface.

According to an embodiment of the present invention, such an electric plate 2000 can be mounted on the upper part of the battery module 1000, particularly, on the upper part of the cell assembly 100. When the battery module 1000 is assembled in a state where the battery module 1000 is mounted on the top of the battery module 1000, the wire 240 of the battery module 1000 is connected to the battery module 1000 and the battery module 2000, It is possible to reduce the assemblability of the battery. Particularly, when the battery module 1000 and the electric-field plate 2000 are combined, the wire 240 of the battery module may cause a problem of being caught between the battery module 1000 and the electric-field plate 2000, The assembly time is delayed, the wires 240 are damaged, and the defective rate of the battery pack can be increased.

Further, the wire 240 of the battery module 1000 may be connected to the electric plate 2000 so that the electric plate 2000 can receive power or electrical signals. In this case, the wire 240 may be provided on the upper side of the battery module 1000 so as to protrude upward in order to facilitate connection with the electric plate 2000, 2000 and the battery module 1000 can be further increased.

However, in the present invention, the battery module 1000 is provided with a wire detachable part 250, and the wire 240 of the battery module can be fixed or separated from the wire detachable part 250 arbitrarily. Therefore, when assembling the battery module and the electric field plate 2000, the wire 240 is fixed to the wire detachable part 250. When the battery module and the electric field plate 2000 are assembled, So that the connector of the wire 240 can be connected to the connector of the electric plate 2000. [

Particularly, the wire 240 and the wire detachable part 250 are provided in the side mount unit 200 and the electric plate 2000 can be assembled in a state of being seated on the cell assembly 100. In this case, the wire 240 of the side mount unit 200 is mounted on the wire detachable part 250 before the electric plate 2000 is assembled to the upper part of the cell assembly 100, The wire 240 may be disengaged after being assembled on top of the assembly 100. The wires 240 of the side mount unit 200 can be connected to the electric plate 2000 through the connectors provided at the ends thereof, as indicated by B1 and B2 in Fig. Thus, through the wire 240, the electric plate 2000 can be given or received an electric signal, a power supply, or the like.

The wire detachable part 250 may be configured such that the wire 240 mounted on the wire detachable part 250 is positioned on a portion other than the upper part of the cell assembly 100 when the wire 240 is mounted. That is, the wire detachable unit 250 may be configured such that the wire 240 is not positioned above the cell assembly 100 when the wire 240 is mounted. This will be described in more detail with reference to Fig.

5 is a top view of the configuration of Fig. 3. Fig.

Referring to FIG. 5, the battery module may be configured such that the side mount unit 200 is mounted on the side surface of the cell assembly 100. A component such as an electric plate 2000 may be mounted on the upper portion of the cell assembly 100. At this time, the electric field plate 2000 is mostly placed in the vertically upper portion of the cell assembly 100, such as the portion indicated by E, and can be configured so as to be hardly placed in the vertical upper portion of the side mount unit 200 .

Therefore, the wire detachable portion 250 can be configured such that when the wire 240 is mounted, the wire detachable portion 250 is not placed in a portion denoted by E in the horizontal direction, but is placed in another portion. Therefore, according to this aspect of the present invention, when the electric plate 2000 is mounted on the upper part of the cell assembly 100, the wire 240 is prevented from being interposed between the cell assembly 100 and the electric plate 2000 can do. More specifically, the wire detachable part 250 is configured and positioned so that when the wire 240 is attached, the wire 240 is not positioned in the assembly space between the cell assembly 100 and the electric plate 2000 .

As described above, in the present invention, the wire detachable portion 250 is configured to be fixed and separated by mounting the wire 240. The detachment structure of the wire detachable portion 250 and the wire 240 And can be implemented in various forms.

Fig. 6 is an enlarged view of a portion A in Fig. 2, and Fig. 7 is a view showing a configuration in which a wire 240 is attached to the wire detachable portion 250 in the configuration of Fig. 8 is a top view of the configuration of Fig. 7. Fig. Particularly, in FIG. 8, the lower portion of the drawing is the portion where the cell assembly 100 is, and the upper portion of the drawing is the outside of the battery module.

6 to 8, the wire detachable unit 250 may include an inserting unit 251. Here, the inserting portion 251 is a component that can fix the wire 240 by inserting the wire 240. The inserting portion 251 may include two protrusions to insert the wire 240 into the space between the protrusions as shown in the figure so that the wire 240 can be fixed without moving in the horizontal direction .

More preferably, more than two insertion portions 251 may be provided as the wire detachable portion 250 for fixing one wire 240. [ Since the wire 240 is formed to extend in one direction, two or more insertion portions 251 are formed at a predetermined distance from each other. When the other portion is fixed, the horizontal fixing force with respect to the wire 240 can be further improved. Therefore, when assembling the battery module and the other components such as the electric plate 2000, the movement of the wire 240 can be minimized to improve the assembling processability.

Also, preferably, the inserting portion 251 may be configured such that the wire 240 is fitted and coupled. This configuration will be described in more detail with reference to Fig.

9 is a view showing an example of a cross-sectional shape taken along the line C-C 'in Fig.

Referring to FIG. 9, the insertion portion 251 may be configured to have a protrusion as indicated by G in the upper portion thereof. The protrusion can prevent the wire 240 from being easily separated from the insertion portion 251 in the upward direction in a state where the wire 240 is inserted into the insertion portion 251. Therefore, according to this embodiment of the present invention, the movement of the wire 240 in the horizontal direction as well as in the vertical direction can be suppressed by the insertion portion 251. Herein, the protrusion is formed by inserting the opening of the inserting portion 251 into the inserting portion 251 in order to prevent the wire 240 from escaping from the inserting portion 251 in a state where the wire 240 is inserted into the inserting portion 251, (Diameter). However, in order to insert or separate the wire 240, the insertion portion 251 may be configured to be opened at a predetermined distance in the left-right direction.

Although it is shown in the drawing that the insertion portion 251 for inserting the wire is formed in a convex shape like a projection, it is needless to say that the insertion portion 251 may be formed in a concave shape like a groove.

Also, preferably, the wire detachable portion 250 may include a latching portion 252 configured to allow the wire to be wound and bent.

7 and 8, the wire detachable part 250 may include a latching part 252 in addition to the insertion part 251. The latching part 252 may be formed by a wire- And can be configured in any form and size. For example, the latching part 252 may have a predetermined size and may protrude upward. In this configuration in which the latching portion 252 is provided, the wire can be wound on the latching portion 252, and the wire can be bent by this winding. For example, in the configuration of FIG. 8, the wires connected to the side mounting unit 200, such as the outlet duct 220 from the left side, are inserted into two insertion portions 251 spaced apart from each other by a predetermined distance, Extended to the latching portion 252, and bent in a shape elongated in the leftward direction. That is, the wire may be bent 180 degrees by the latching portion 252.

As described above, according to the embodiment of the present invention in which the engaging portion 252 is provided in the wire detachable portion 250, the space occupied by the wire attached to the wire detachable portion 250 may not be increased. Particularly, as shown in the drawings, the battery module may have a plurality of wires, and the lengths of the wires may be different from each other. At this time, in order to stably fix the long wire, the space for forming the wire detachable part 250 may be enlarged. However, if the wire is bent through the retaining part 252 as in the above embodiment, The wire can be effectively fixed in a narrow space even if the space occupied by the wire 250 is not enlarged. Therefore, convenience and efficiency of the assembling process of the battery module can be improved. 1 and 2, the wire detachable portion 250, to which one wire having the longest length among the three wires provided in the inlet duct 210 and the outlet duct 220 is coupled, And the wire detachable portion 250 to which the remaining two wires are coupled is not provided with such a latching portion 252. In addition,

In particular, the latching portion 252 can be configured such that when the wire is bent, the wire is not positioned in the outer space of the side mount unit 200. [ 8, the wire is located only in the upper space (indicated by D in Fig. 8) of the outlet duct 220 in a state where the wire is fixed to the wire detachable part 250, And may be configured not to deviate from the upper space of the outlet duct 220. According to this embodiment of the present invention, even when the wire is mounted on the wire detachable part 250 and fixed, the wire does not protrude to the outside of the battery module on the basis of the horizontal direction. Therefore, You do not have to.

6 to 8 correspond to one embodiment of the present invention. However, the present invention is not limited to the wire detachable portion 250.

10 is a top view schematically showing the configuration of a wire detachable unit 250 according to another embodiment of the present invention. More specifically, Fig. 10 shows another embodiment of the configuration of Fig.

10, the wire detachable part 250 includes one insertion part 251, and a wire connected to the outflow duct 220 can be fixed to the insertion part 251 by inserting the wire. At this time, the insertion portion 251 may be formed such that the seating direction of the wire is inclined from the inner side to the outer side. That is, the inserting portion 251 may be configured such that the wire is inclined from the left lower side to the right upper side with reference to Fig. In this case, the wire inserted into the insertion portion 251 is directed from the inside to the outside of the battery module in the extending direction. Therefore, the wire is not located on the upper part of the cell assembly 100 but on the upper part of the side mount unit 200 and the outer side of the side mount unit 200, The assembly may not be disturbed.

11 is a top view schematically showing the configuration of the wire detachable unit 250 according to another embodiment of the present invention. More specifically, Fig. 11 is still another embodiment of the configuration of Fig.

Referring to FIG. 11, the wire detachable part 250 includes two insertion parts 251, and the wire seating directions with respect to the two insertion parts 251 are not parallel to each other as shown in FIG. 8, Lt; / RTI > For example, as shown in Fig. 11, the two insertion portions 251 may be configured such that the wire seating directions are orthogonal to each other. In this case, the wire may be inserted into the left insertion portion 251, extend in the right direction, and then be inserted into the right insertion portion 251 and bent in the outward direction of the battery module. According to this embodiment, since the wire is not located on the upper part of the cell assembly 100 but only on the upper side of the side mount unit 200 or the outer side of the battery module and not on the upper part of the cell assembly 100, When the electric plate 2000 or the like is assembled to the upper portion of the body 100, the assembling processability can be improved.

Also, preferably, the wire detachable portion 250 may include a Velcro tape. This will be described with reference to FIG.

12 is a perspective view schematically showing a configuration of a wire detachable portion 250 according to another embodiment of the present invention.

12, the wire detachable part 250 formed on the upper surface of the side mount unit 200 may include a tape at least a part of which is made of a Velcro type. These Velcro tapes may have hooked small protrusions on one side and lasso shaped protrusions on the other to enable them to be detached from each other. The velcro tape may have a shape elongated in one direction and may be attached in a form of wrapping one or more of the wires. In this case, the wire 240 can be fixed by the Velcro tape while being placed on the upper surface of the side mount unit. Thus, by this fixing, it is possible to prevent the wire from being positioned on the upper portion of the cell assembly 100 when assembling the battery module. Particularly, in the case of the velcro attachment method, attachment and detachment can be made easily, and the space occupied by the Velcro tape can be advantageously small.

In Fig. 12, the Velcro tape is shown as being provided on the wire detachable part, but the Velcro tape may be provided on the wire and fixed to the wire detachable part. Further, the Velcro tape may be provided in both the wire detachable portion and the wire, and may be configured to be attachable to each other.

Meanwhile, the wire detachable unit 250 may be provided at a position higher than the cell assembly 100 in the side mount unit 200. 1 and 2, when the side mounting unit 200 having the wire detachable part 250 is the inflow duct 210 and the inflow duct 220, The outlet 211 of the inlet duct 211 and the outlet 221 of the outlet duct 220 may protrude upward from the upper surface of the cell assembly 100. At this time, the wire detachable part 250 may be formed on the inlet 211 and / or the outlet 221 protruding upward from the upper surface of the cell assembly 100 as described above. According to this embodiment of the present invention, when a component such as the electric field plate 2000 is mounted on the upper part of the cell assembly 100 and assembled, the wire fixed to the wire detachable part 250 is connected to the cell assembly 100 The probability of the wire being inserted between the cell assembly 100 and the electric field plate 2000 can be lowered.

Although the side mounting unit 200 having the wire and wire attaching / detaching unit 250 is described as an inlet duct 210 and an outlet duct 220 in the various embodiments described above, The present invention is not limited to these embodiments.

In particular, the battery module may include a sensing assembly, as shown in Figures 1 and 2.

Here, the sensing assembly is a component connected to the cell assembly 100 to sense the voltage of the secondary battery included in the cell assembly 100. To this end, the sensing assembly may be mounted on at least one side of the cell assembly 100, such as the right side of the cell assembly 100, as shown in the figure. In particular, the sensing assembly may be configured to contact the electrode leads 111 of all the secondary batteries provided in the cell assembly 100. Therefore, the sensing assembly can be mounted on the side of the cell assembly 100 where the electrode leads of the secondary battery protrude. And, this sensing assembly has a wire, and can be connected to other external components through such a wire. For example, as indicated by B3 in FIG. 4, the wire connector of the sensing assembly may be connected to a connector of the electrical plate 2000 and connected to an electrical component mounted on the electrical plate 2000, such as a BMS. In this case, the wire of the sensing assembly may provide a path for transmitting the voltage information of the secondary battery sensed by the sensing assembly to the BMS or the like.

In such a configuration, the sensing assembly may include a wire detachable portion 250. That is, in the battery module according to one aspect of the present invention, the side mounting unit 200 having the wire and the wire detachable part 250 for detachably connecting the wire may be a sensing assembly. In other words, the sensing assembly according to an aspect of the present invention may include a wire detachable portion 250 so that a wire that can be connected to the electric field plate 2000 and the like is detachable. Accordingly, until the electric plate 2000 is mounted on the upper portion of the sensing assembly, the wires of the sensing assembly are fixedly mounted on the wire detachable portion 250 of the sensing assembly, The wire of the sensing assembly may be detached from the wire detachable part 250 and connected to the electric plate 2000. [

The battery pack according to the present invention includes one or more of the above-described battery modules. At this time, in addition to the battery module, the battery pack may further include a case for accommodating the battery module, and various devices for controlling charge / discharge of the battery module such as a battery management system (BMS), a current sensor, a fuse, . Particularly, the battery pack according to the present invention may include a full length plate 2000 on which an electrical component is mounted, and the full length plate 2000 may be mounted on the top of the battery module.

The battery module 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 module according to the present invention.

13 is a flowchart schematically showing a method of manufacturing a battery pack according to an embodiment of the present invention.

Referring to FIG. 13, a method of manufacturing a battery pack according to an embodiment of the present invention includes preparing a battery module (S110), attaching a wire (S120), assembling an electrical plate 2000 (S130) S140).

The step S110 includes preparing a battery module 1000 to be included in the battery pack, and the battery module includes a cell assembly 100 and a side mounting unit 200. [ Here, the cell assembly 100 includes a plurality of cartridges 120 stacked in one direction and a plurality of secondary cells housed in the inner space of the stacked cartridges 120. The side mounting unit 200 includes a wire 240 mounted on a side surface of the cell assembly 100 and extending in one direction to form a protruding shape. In the side mounting unit 200, a wire detachable portion 250 is formed so that at least a part of the wire can be detached.

In step S120, the wire is attached to or coupled with the wire detachable unit 250 with respect to the battery module.

In operation S 130, an electric plate 2000 having at least one of a BMS, a current sensor, a relay, and a fuse is mounted on an upper portion of the battery module.

In step S140, the wire is detached from the wire detachable unit 250, that is, separated from the battery module in which the electric plate 2000 is assembled. At this time, the wire thus separated may be connected to components other than the battery module, such as the electric plate 2000.

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, terms indicating upward, downward, leftward, rightward, forward, and backward directions are used, but these terms are for convenience of explanation only and may vary depending on the position of an object or the position of an observer It will be apparent to those skilled in the art that the present invention is not limited thereto.

100: cell assembly
120: Cartridge
200: Side mounting unit
210: inlet duct
211: inlet
212:
220: Outflow duct
221: Outlet
222:
230: sensing assembly
240: wire
250: wire detachment portion
251:
252:
1000: Battery module
2000: full length plate

Claims (15)

A cell assembly having a plurality of cartridges stacked in one direction and a plurality of secondary cells housed in an inner space of the stacked cartridges; And
A side attachment unit having a wire attachment / detachment unit configured to be detachable from at least a part of the wire, the side attachment unit being formed on the side of the cell assembly,
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An electric field plate on which at least one of a BMS, a current sensor, a relay, and a fuse is mounted is mounted on an upper portion of the cell assembly,
The wire detachable portion is configured to be convex upward from the upper portion of the side mount unit, and when the wire is mounted, the wire is configured such that the wire is not positioned in the assembly space between the cell assembly and the electric field plate in the horizontal direction And the end of the mounted wire is oriented to the outside of the battery module in a horizontal direction. The method according to claim 1,
Wherein the wire detachable portion is configured such that when the wire is mounted, the mounted wire is positioned at a portion other than the upper portion of the cell assembly. The method according to claim 1,
Wherein the wire detachable portion includes an insertion portion configured to be inserted and fixed to the wire. The method of claim 3,
Wherein the inserting portion is configured to engage the wire. The method of claim 3,
Wherein the inserting portion is formed such that a seating direction of the wire is inclined from an inner side to an outer side so that an end portion of the inserted wire is directed to the outside direction. The method according to claim 1,
Wherein the wire detachable portion includes a latching portion configured to allow the wire to be wound and bent. The method according to claim 1,
Wherein the wire detachable portion comprises a Velcro tape. The method according to claim 1,
The wire detachment unit may be configured such that the wire is mounted before an electric plate on which at least one of a BMS, a current sensor, a relay, and a fuse is mounted on an upper portion of the cell assembly, And the wire is detached after being assembled. 9. The method of claim 8,
And the wire is connected to the electric field plate. The method according to claim 1,
Wherein the side mounting unit includes an inlet duct formed on an outer side thereof and an opening formed on an inner side thereof so that fluid introduced through the inlet port is drawn into the cell assembly through the opening, And an outlet duct configured to receive the fluid discharged from the cell assembly through the outlet and flow out through the outlet,
Wherein at least one of the inlet duct and the outlet duct includes a fan for accelerating the flow of the fluid in the internal space, and the wire provides a path for supplying operating power to the fan. 11. The method of claim 10,
Wherein the inflow port of the inflow duct and the outflow port of the outflow duct protrude upward from an upper surface of the cell assembly, and the wire detachable portion is formed on at least one of the inflow port and the outflow port. The method according to claim 1,
The side mounting unit includes a sensing assembly contacting the electrode lead of the secondary battery of the cell assembly to sense the voltage of the secondary battery,
Wherein the wire provides a path for transferring sensed voltage information by the sensing assembly. A battery pack comprising the battery module according to any one of claims 1 to 12. 12. A vehicle comprising the battery module according to any one of claims 1 to 12. A cell assembly including a plurality of cartridges stacked in one direction and a plurality of secondary cells housed in an inner space of the stacked cartridges, and a plurality of secondary batteries mounted on side surfaces of the cell assemblies and extending in one direction, A side attaching unit having a wire attaching / detaching portion configured to allow at least a part of the wire to be detachable;
Mounting a wire of the battery module to a wire detachment portion of the battery module;
Assembling an electric field plate having an upper portion on which at least one of a BMS, a current sensor, a relay, and a fuse is mounted on an upper portion of the battery module; And
Assembling the electric field plate on the upper part of the battery module, and then releasing the wire from the wire detachable part and connecting it to the electric field plate
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The battery module prepared in the battery module preparing step may be configured such that the wire attaching / detaching portion is convex upward from the upper portion of the side mounting unit, and when the wire is mounted, the wire is horizontally Wherein the battery pack is configured so as not to be positioned in an assembling space between the plates, and the end of the mounted wire is directed to the outside of the battery module in a horizontal direction.

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