KR101760400B1 - Battery module and battery pack including the same - Google Patents

Abstract

Disclosed is a battery module and a battery pack including the same that can effectively prevent foreign matter such as moisture and dust from penetrating into a cooling channel. A battery module according to the present invention includes: a cell assembly having a plurality of secondary cells and a flow path formed between the secondary cells; An inlet duct disposed on one side of the cell assembly to cover one side of the cell assembly and configured to receive an inflow fluid through the inflow port formed with an inflow port; An outlet duct disposed on the other side of the cell assembly to cover the other side of the cell assembly and configured to have an outlet so that fluid discharged from the flow passage flows out through the outlet; And a window provided on at least one of the inlet and the outlet and having a filter for filtering particles of a predetermined size or larger.

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 [0001] The present invention relates to a battery module, and more particularly, to a battery module and a battery pack including the same, which can effectively prevent foreign substances such as moisture and dust from penetrating into a cooling channel.

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. 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 store and stack. 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.

When constructing such a battery module, one of the major issues is the problem of cooling. The secondary battery can generate heat by itself in the process of repeated charging and discharging. Since the plurality of secondary batteries are concentrated in a narrow space in the battery module, the temperature of the battery module may increase significantly during use. In addition, since the middle- or large-sized devices such as an automobile or a power storage device are often used outdoors, the temperature of the battery module mounted thereon can be further increased in a high-temperature situation such as summer. However, when the temperature of the secondary battery included in the battery module is higher than the proper temperature, the performance may be deteriorated and, in severe cases, there is a risk of explosion or ignition. Therefore, securing the cooling performance in constituting the battery module is a very important problem.

Two types of cooling methods of battery module are air cooling type and water cooling type. Air cooling type is more widely used than water cooling type due to leakage current or waterproofing problem of secondary battery. Such an air cooling type cooling system often includes a duct for introducing a fluid such as outside air into the battery module and for discharging the air inside the battery module to the outside.

According to the configuration of the conventional battery module, air flows in and out through the outflow opening of the duct. In this process, foreign matter such as dust and moisture may be infiltrated through the outflow opening of the duct. In this case, foreign matter such as moisture and dust may cause the performance of the battery module to be degraded or cause a failure, and the cooling flow path inside the battery module may be blocked to lower the cooling efficiency. In addition, an electrically conductive object, such as a bolt or wire piece, can penetrate into the battery module through the outlet of the duct. In this case, such an electrically conductive object contacts the electrode tab or terminal, Which may cause the battery module to break, fire or explosion.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a battery module employing an air cooling type cooling system, which has an improved structure for preventing foreign matter from being easily infiltrated through an outlet of a duct connected to a cooling channel An object of the present invention is to provide a battery module having an inflow / outflow structure, a battery pack including the battery module and an automobile.

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 having a plurality of secondary cells and a flow path formed between the secondary cells; An inlet duct disposed on one side of the cell assembly to cover one side of the cell assembly and configured to receive an inflow fluid through the inflow port formed with an inflow port; An outlet duct disposed on the other side of the cell assembly to cover the other side of the cell assembly and configured to have an outlet so that fluid discharged from the flow passage flows out through the outlet; And a window provided on at least one of the inlet and the outlet and having a filter for filtering particles of a predetermined size or larger.

Here, the window may include a window body having an opening formed therein to allow fluid to flow in and out in a horizontal direction, and the filter may be configured to cover the opening and be detachable with respect to the window body.

In addition, the window body may have a hollow space formed therein to hold the filter in the inner space, and an insertion hole may be formed on at least one side so that the filter can be drawn in and out.

The window body may be formed in a shape corresponding to the shape of the inlet or the outlet and may include at least one of a rim portion formed with the insertion hole and an inner side and an outer side of the filter to cover a part of the opening, And a rib coupled to the rim.

The window body may include a first body having an opening and a second body located on the outside of the filter, the first body having an opening and the opening.

At least one of the first body and the second body includes a rim having a shape corresponding to the shape of the inlet or the outlet and a rib covering both ends of the opening and having both ends joined to the rim can do.

Further, the first body and the second body may be coupled to each other while forming an empty space therebetween, and the filter may be retained in the empty space.

The first body and the second body may be fixed to each other at different portions from the opening.

The window body may include a first rib that covers a portion of the inner opening of the filter inside the filter, and a second rib that covers a portion of the outer opening of the filter outside the filter.

In addition, the first rib and the second rib may be formed in a plate shape, and the inner and outer directions may be formed to be inclined at a predetermined angle in a direction parallel to the paper surface.

In addition, the first rib and the second rib may be formed so that the inclination angles are mutually equal, and the inward and outward direction lines of the surface form one straight line.

In addition, the first rib and the second rib may be configured to be tilted from the inner side toward the outer side.

In addition, a plurality of the first ribs and the second ribs may be provided, respectively.

The plurality of first ribs may be stacked in the vertical direction with a predetermined distance therebetween, and the plurality of second ribs may be stacked in the vertical direction with a predetermined distance therebetween.

The first rib may be configured such that the end of the inner end is positioned higher than the end of the outer end of the second rib in which the inner and outer directional lines of the surface are in alignment with the first rib located on the upper layer.

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 the present invention, it is possible to effectively prevent foreign matter such as dust and moisture from penetrating into the outlet port connected to the cooling channel of the battery module.

In particular, according to one aspect of the present invention, a filter is provided in a window inserted into an outlet of a duct, so that the structure of the duct is complicated or the volume of the duct is prevented from being increased due to the filter.

According to an aspect of the present invention, a window is detachable from a duct, and a filter is detachably installed in the window. Therefore, when a problem such as a short life of the filter or a damage occurs, it is possible to replace only the filter to prevent deterioration of the foreign matter removing performance.

Furthermore, according to one aspect of the present invention, the filter can be easily replaced, and the filter can be stably mounted on the window, so that the filter can be prevented from being detached from the window due to vibration, impact, or the like.

In addition, according to one aspect of the present invention, it is possible to increase the size of the filter and to easily attach and detach the filter.

According to an aspect of the present invention, there is a fear that foreign substances, such as moisture and dust, are prevented from penetrating through the outflow inlet, so that the cooling efficiency is reduced due to the foreign matter or the performance of the battery module is deteriorated or damaged Can be prevented from occurring. In addition, according to one aspect of the present invention, since the penetration of an electrically conductive object such as a bolt or a piece of wire is effectively prevented through an outflow inlet, problems such as shorting, fire, explosion, etc. caused by such an object can be prevented .

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 augment the technical spirit of the invention. And should not be construed as limiting.
1 is an assembled perspective view schematically showing a configuration of a battery module according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of the configuration of Fig. 1. Fig.
3 is a perspective view schematically showing a configuration of a window according to an embodiment of the present invention.
Fig. 4 is a view of the configuration of Fig. 3 viewed from below. Fig.
Fig. 5 is an exploded perspective view of Fig. 3. Fig.
6 is a perspective view schematically showing a configuration of a window according to another embodiment of the present invention.
Fig. 7 is a view of the configuration of Fig. 6 viewed from below.
Fig. 8 is an exploded perspective view of Fig. 6. Fig.
9 is a view schematically showing a sectional configuration of a window according to an embodiment of the present invention.
10 is a view schematically showing a sectional configuration of a window according to another 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 assembled perspective view schematically showing a configuration of a battery module according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the configuration of FIG.

1 and 2, a battery module according to the present invention includes a cell assembly 100, an inlet duct 200, an outlet duct 300, and a window 400.

The cell assembly 100 includes at least one secondary battery. In particular, in the battery module, the cell assembly 100 may be an assembly of 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 stacking cartridge for stacking pouch type secondary batteries. Here, the stacking cartridge is a component used for stacking the secondary batteries, which can hold the secondary batteries to prevent the secondary batteries from flowing, and can stack the mutually stackable cartridges, thereby guiding the assembling of the secondary batteries.

Such a stacking cartridge may have a frame made of a plastic material, which is formed in the shape of a rectangular ring having a hollow central portion, and a cooling plate formed in the form of a plate and located in a central portion of the frame. In this case, the four corners of the cartridge may be located on the outer peripheral portion of the secondary battery.

In addition, the cell assembly 100 may be configured such that the secondary cells are stacked, and at least two or more secondary cells are spaced apart from each other by a predetermined distance. By such a spacing configuration, a flow path can be formed between the secondary batteries. That is, the cell assembly 100 may be configured such that a flow path is formed between the secondary cells, which may be realized by a stacking cartridge. Therefore, when a fluid, such as air, flows from the outside into the cell assembly 100, such air can heat-exchange with the secondary battery while flowing through the flow path formed between the secondary cells. At this time, heat exchange between the secondary battery and the air can be performed by direct contact between the secondary battery and the air. Alternatively, when the cartridge is provided with a cooling plate, the cooling plate may be brought into contact with air so that heat exchange between the secondary battery and the air is indirectly performed.

In the case of FIG. 2, the secondary cells in the cell assembly 100 are stacked in the vertical direction, but the secondary cells may be stacked in various other forms such as a horizontal direction.

The inlet duct 200 may be positioned on one side of the cell assembly 100 to cover a corresponding side of the cell assembly 100. For example, when separating the front, rear, left, and right sides of the cell assembly 100 (similarly, the following description), the inflow duct 200 is divided into two parts, that is, And may be configured to cover the right side, located on the right side of the four sides of the cell assembly 100. [ At this time, the inlet duct 200 may have a shape and size corresponding to the right side of the cell assembly 100 so as to cover the right side of the cell assembly 100.

The outflow duct 300 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 300 may be positioned on the opposite side of the side where the inflow duct 200 is located among four sides of the cell assembly 100. For example, the outlet duct 300 may be located on the left side of the cell assembly 100 and may be configured to cover the left side. At this time, the outflow duct 300 may have a shape and size corresponding to the left side of the cell assembly 100 so as to cover the left side of the cell assembly 100.

The inlet duct 200 and the outlet duct 300 are formed with an inlet 210 and an outlet so that the fluid can flow in and out through the inlet 210 and the outlet.

For example, the inlet duct 200 may have an inlet 210 formed on at least one side of the inlet duct 210, so that fluid outside the battery module may be introduced into the battery module through the inlet 210. Particularly, the inflow duct 200 may be configured such that the fluid introduced through the inflow port 210 is drawn into the flow path of the cell assembly 100.

In addition, the outlet duct 300 may have an outlet formed on at least one side thereof to allow the fluid in the battery module to flow out of the battery module through the outlet. Particularly, the outflow duct 300 may be configured such that fluid flowing into the flow path of the cell assembly 100 through the inflow duct 200 is discharged from the flow path and flows out of the battery module through the outflow port.

Here, the inflow duct 200 and the inflow duct 300 may include a plurality of inflow ducts, respectively. In this case, a plurality of inlets 210 and outlets may also be provided. For example, one battery module may be equipped with two inlet ducts 200, and these two inlet ducts 200 may be configured to divide and cover the right side of the battery module. In this battery module, two outflow ducts 300 may be provided to cover the left side of the battery module.

In this configuration, the cooling fluid may flow into the inlet 210 of the inlet duct 200 and enter the right side of the cell assembly 100. 2, a plurality of open channels are formed in the cell assembly 100, and the channels may be formed to extend from the right side to the left side of the cell assembly 100 have. The flow path of the cell assembly 100 may be opened on the left side and connected to the outlet duct 300. Accordingly, the fluid introduced into the inlet duct 200 flows along the flow path of the cell assembly 100, flows into the outlet duct 300, and is discharged to the outside through the outlet.

The window 400 may be installed in at least one of the inlet 210 of the inlet duct 200 and the outlet of the outlet duct 300, as shown in FIGS. The configuration of the window 400 will be described in more detail with reference to the drawings.

FIG. 3 is a perspective view schematically showing a configuration of a window 400 according to an embodiment of the present invention, and FIG. 4 is a view of the configuration of FIG. 3 as viewed from below. Fig. 5 is an exploded perspective view of Fig. 3. Fig.

Referring to FIGS. 3 to 5, the window 400 according to the present invention may include a filter 420. Here, the filter 420 is a component that can filter particles larger than a predetermined size, and various filters known at the time of filing of the present invention can be employed as the filter 420 of the present invention.

The filter 420 may cover the passage through which the fluid flows in the inlet 210 or the window 400 mounted on the outlet. For example, when the filter 420 is mounted on the window 400 of the inlet 210, the fluid that flows into the battery module through the window 400 of the inlet 210 must flow through the filter 400 of the window 400, A filter 420 may be provided to pass through the filter 420.

According to this configuration of the present invention, it is possible to prevent foreign substances such as moisture and dust from flowing into the battery module through the inlet 210 and the outlet. Particularly, according to this aspect of the present invention, it is possible to prevent the problem that the flow path is clogged by dust, moisture, or the like flowing into the flow path of the cell assembly 100. Therefore, according to this aspect of the present invention, it is possible to prevent the cooling efficiency from being lowered due to the penetration of foreign matter.

In particular, the window 400 may include a window body 410 with a filter 420. The window body 410 may be configured to allow fluid to flow in and out in a horizontal direction. For example, as shown in FIGS. 3 and 5, the window body 410 is formed with an opening O in such a manner that a central portion of the window body 410 is opened from left to right so that the fluid can freely move in the left- .

In this case, the filter 420 may be fixed to the window main body 410. The filter 420 may be configured to cover the entire opening of the window body 410 to filter the material passing through the window 400.

In particular, the filter 420 may be detachably attached to the window body 410.

To this end, the window body 410 may be configured to have a hollow space therein to hold the filter 420 in the inner space V, as shown in FIGS. 3 to 5. The window body 410 is provided with an insertion hole I at one side so as to allow the filter 420 to be drawn in the internal space V and to draw the filter 420 in the internal space V, May be formed. For example, as shown in FIG. 4, an insertion hole I may be formed in a lower portion of the window body 410. 5, the filter 420 is inserted into the inner space V of the window body 410 through the insertion hole I in the lower portion of the window body 410, And can be mounted on the body 410. The filter 420 may be detached from the window body 410 by being pulled downward through the insertion hole I in the inner space of the window body 410.

According to this configuration of the present invention, since the filter 420 is configured to be replaceable from the window 400, when the filter 420 needs to be replaced, such as when the filter 420 is damaged or its performance is changed, So that it can be easily performed.

According to the above configuration of the present invention, the window body 410 is entirely formed as one body, and the filter 420 is mounted in the inner space thereof, Can be prevented.

Furthermore, the window body 410 may have a rim 411 and a rib 412. [

Here, the rim portion 411 is an element constituting the rim of the window main body 410, and the overall rim may be configured to correspond to the shape of the inlet 210 or the outlet. For example, as shown in Figs. 3 and 5, the rim portion 411 is formed in a trapezoidal shape viewed from right to left, and a central portion thereof is formed in the shape of a hollow square ring .

Particularly, in the case where the filter 420 is provided in the inner space of the window main body 410, the edge portion 411 is formed by fixing the filter 420 to prevent the filter 420 from moving in the front-rear direction, Can be limited.

The rim portion 411 may include an insertion hole for inserting the filter 420 into the inner space of the window body 410. For example, in the rim portion 411, as shown in Figs. 3 to 5, an insertion hole I may be formed in a lower portion.

The ribs 412 may be disposed on at least one of the inside and the outside of the filter 420 so as to cover a part of the opening and have both ends coupled to the rim 411. For example, as shown in FIG. 3, the ribs 412 may be formed in a shape elongated in the forward and backward directions and may have a shape in which both ends are coupled to the front end side and the rear end side of the rim portion 411, respectively have. In FIG. 3, the ribs 412 are provided on the outer side of the filter 420, but the ribs 412 may be provided on the inner side of the filter 420. Here, the outer side of the filter 420 means a direction away from the center of the battery module, that is, away from the center of the battery module, with respect to the filter 420. The inside of the filter 420 means a direction approaching the center of the battery module with respect to the filter 420. Herein, the concept of the inner side and the outer side has been described with reference to the filter 420. However, unless otherwise specified, the other elements will follow the inner and outer concept.

The ribs 412 may restrict the movement of the filter 420 inward and / or outward relative to the filter 420 to fix the filter 420. In addition, the ribs 412 may protect the filter 420 from the inside and / or the outside. For example, the ribs 412 located outside the filter 420 can primarily prevent the relatively large object, such as an external stone or bolt, from damaging the filter 420.

The rib 412 may be integrally formed with the rim 411. In this case, the rib 412 may be prevented from being damaged or detached from the rim 411 due to external impact or vibration. .

FIG. 6 is a perspective view schematically showing the configuration of a window 400 according to another embodiment of the present invention, and FIG. 7 is a view of the configuration of FIG. 6 viewed from the bottom. Fig. 8 is an exploded perspective view of Fig. 6. Fig. 6 to 8 will mainly be described with respect to portions which are different from the configurations of Figs. 3 to 5, and detailed description of portions to which the description of Figs. 3 to 5 can be similarly applied will be omitted.

6 to 8, a window 400 according to the present invention includes a window body 410 and a filter 420, wherein the window body 410 includes a first body 410a physically separated from the first body 410a, And a second body 410b.

Here, the first body 410a is formed with an opening configured to allow the fluid to pass in the left-right direction, i.e., inward and outward directions, and may be located inside the filter 420. [ Like the first body 410a, the second body 410b has an opening. The second body 410b may be located outside the filter 420, unlike the first body 410a. Therefore, in this configuration, the filter 420 may be configured to be interposed between the first body 410a and the second body 410b.

At this time, at least one of the first body 410a and the second body 410b may include a rim 411 and a rib 412. At this time, the rim portion 411 may be formed in a shape corresponding to the shape of the inlet 210 or the outlet, as in the embodiment of FIGS. 3 to 5, the ribs 412 may be configured to cover a part of the openings and have both ends coupled to the rim 411. In this case,

The first body 410a and the second body 410b may be configured such that the first body 410a and the second body 410b can be coupled to each other in the embodiment where the window body 410 is composed of the first body 410a and the second body 410b. For example, a hook may be formed on the first body 410a, and a groove may be formed on the second body 410b so that the hook can be engaged with the hook. The first main body 410a and the second main body 410b are combined with each other by the hook of the first main body 410a being inserted into the groove of the second main body 410b to form the window main body 410. [ At this time, when the first body 410a and the second body 410b are coupled, an empty space may be formed therebetween. The filter 420 may be retained in the empty space.

Alternatively, in the embodiment in which the window body 410 is constituted by the first body 410a and the second body 410b, the first body 410a and the second body 410b are respectively formed with the openings, As shown in Fig. For example, the first body 410a may be configured to be coupled to the inside of the filter 420, and the second body 410b may be configured to be coupled to the outside of the filter 420. [

According to the configuration in which the filter 420 is interposed between the first body 410a and the second body 410b as in the embodiments of FIGS. 6 to 8, the size of the filter 420 may be set to be similar to the size of the window 400 . Therefore, since the size of the filter 420 can be increased, the amount of flow of the fluid through the inlet 210 to the outlet can be increased. In addition, according to this configuration of the present invention, the replacement of the filter 420 from the window main body 410 can be easily performed.

Meanwhile, as described above, the window body 410 may include ribs 412 both inside and outside the filter 420. Hereinafter, the ribs 412 positioned inside the filter 420 will be referred to as a first rib 412a, and the ribs 412 located outside the filter 420 will be referred to as a second rib 412b.

The first rib 412a covers a part of the inner opening of the filter 420 and the second rib 412b covers a part of the outer opening of the filter 420. [ According to this configuration of the present invention, the first rib 412a and the second rib 412b protect the filter 420 on the inside and the outside of the filter 420, (210) through the outlet.

At this time, the first ribs 412a and the second ribs 412b may extend in one direction, and may be formed in a plate shape having two flat surfaces. For example, the first ribs 412a and the second ribs 412b are formed in a shape elongated in the front-rear direction, and have a length of at least a certain level in the inner and outer directions (left-right direction) .

9 is a diagram schematically showing a sectional configuration of a window 400 according to an embodiment of the present invention. For example, FIG. 9 is an example of a cross-sectional configuration taken along the line C-C 'in FIG.

9, it is assumed that the left side of the window 400 indicated by D2 represents the outside of the window 400 and the right side of the window 400 indicated by D1 represents the inside of the window 400. [ Referring to FIG. 9, the window 400 may include a plurality of first ribs 412a and a plurality of second ribs 412b. The first ribs 412a and the second ribs 412b may be formed so that their inner and outer directions are inclined at a predetermined angle in a direction parallel to the paper surface. That is, the first ribs 412a and the second ribs 412b may be configured in such a manner that the upper surface and / or the lower surface are flat, and the angle between the inner and outer direction line segments formed by this surface and the ground is 0 ° ≪ / RTI >

The fluid passing through the window 400 by the inclined first and second ribs 412a and 412b is also inclined to the first rib 412a and the second rib 412b Lt; RTI ID = 0.0 > direction. ≪ / RTI > For example, when the fluid flows in the left direction in FIG. 9, the fluid moves rightward while passing through the window 400, and in accordance with the inclined shape of the rib 412, which gradually increases toward the right side, It may have a flow moving upward.

This configuration of the present invention reduces the frontal directional exposure of the filter 420 and the window 400 in the front direction when viewed from the outside to the inside of the window 400, Can be protected. 9, when the window 400 is viewed from the left side of the window 400 and the ribs 412 are configured to be inclined at a predetermined angle from the ground as shown in the figure, It is possible to reduce the exposed area of the filter 420 with respect to the direction. Therefore, it is possible to reduce foreign matter such as water and dust from entering the filter 420 from the outside (left side) of the filter 420, and to prevent the filter 420 from being damaged from foreign matter having a relatively large specific gravity such as stone or bolt .

Here, the first ribs 412a and the second ribs 412b may be formed so that the inclination angles are mutually equal, and the inward and outward directional lines of the surfaces form one straight line. For example, as shown in Fig. 9, an inner and outer directional line formed by the surface of the first rib 412a when seen from the side is denoted by e1, and an inner and outer directional line formed by the surface of the second rib 412b Is e2, the extension line of e1 may be configured to coincide with e2.

According to this configuration of the present invention, the flow of the fluid passing between the first rib 412a and the second rib 412b can be smoothly performed. For example, when air located outside the battery module passes through the space between the second ribs 412b and flows into the window 400, the air first flows along the surface inclined surface of the second rib 412b May be passed through the filter 420. The air that has passed through the filter 420 flows over the surface of the first rib 412a because the surface of the first rib 412a is in the same angle and position with the surface of the second rib 412b, It is possible to continue to flow in the same direction as when the surface of the second rib 412b flowed. Therefore, the air that has flowed along the surface of the second rib 412b can continue to flow on the surface of the first rib 412a without being disturbed by the first rib 412a. Therefore, according to this configuration of the present invention, both the first rib 412a and the second rib 412b are present inside and outside the filter 420, and both of the first rib 412a and the second rib 412b The cooling fluid can smoothly flow into and out of the battery module even if the battery module is inclined.

Particularly, in such a configuration, it is preferable that the first ribs 412a and the second ribs 412b are inclined downward from the inner side to the outer side as shown in Fig. Foreign matter such as moisture, dust, and stone is relatively more likely to flow from the upper part to the lower part than from the lower part. Therefore, according to the configuration in which the ribs 412 are tilted from the outside toward the inside as in the above embodiment, the possibility of such foreign foreign substances entering the inside can be further reduced.

It is preferable that a plurality of the first ribs 412a and the second ribs 412b are provided in one window 400 in the above configuration. According to this embodiment, the interval between the ribs 412 can be narrowed, and the inflow of external foreign matter can be reduced.

At this time, the plurality of first ribs 412a may be stacked in the vertical direction with a predetermined distance therebetween. The plurality of second ribs 412b may also be stacked in the vertical direction with a predetermined distance therebetween. According to this embodiment of the present invention, along with the inclined configuration of the ribs 412, the probability of inflow of foreign matter can be further reduced while ensuring the cooling performance.

10 is a view schematically showing a sectional configuration of a window 400 according to another embodiment of the present invention. 10 is another example of the sectional configuration taken along the line C-C 'in Fig. With respect to the configuration shown in FIG. 10, a detailed description of parts that can be applied to the same description as FIG. 9 will be omitted, and differences will be mainly described. Also in Fig. 10, the outer side of the battery module is denoted by D2 and the inner side of the battery module is denoted by D1, as in Fig.

Referring to FIG. 10, the window 400 may include a first rib 412a and a second rib 412b, which are formed in a shape inclined in a predetermined direction on the ground, as in FIG. 10, the first ribs 412a may be configured such that the inner end portions thereof are positioned higher than the end portions of the outer ends of the second ribs 412b located on the upper layer. That is, the first ribs 412a may be configured to be positioned higher than the end portions of the outer ends of the second ribs 412b, which are aligned with the first ribs 412a located on the upper layer and the inner and outer directional lines of the surfaces have.

For example, as shown in FIG. 10, any one of the first ribs 412a is referred to as f1, and a second rib 412b configured in such a manner that the surface of the first rib 412a coincides with the surface of the first rib 412a immediately above f1 ) Can be referred to as f2. The height of the inner end portion of f1 is denoted by h1, and the height of the outer end portion of f2 is denoted by h2. In this case, h1 and h2 may have the relationship of h1 > h2 so that the inner end of f1 is higher than the outer end of f2.

According to this configuration of the present invention, exposure of the inside of the battery module through the window 400 can be minimized through the arrangement of the first rib 412a and the second rib 412b. That is, according to the above-described configuration, when the foreign substances move in the horizontal direction, they are caught by the first ribs 412a even if they are caught by the second ribs 412b or pass between the second ribs 412b. Therefore, the foreign matter blocking efficiency by the window 400 can be further improved.

According to one aspect of the present invention, in the window 400, the angle of inclination and arrangement of the first rib 412a and / or the second rib 412b are adjusted to pass through the inlet 210 and the outlet It is possible to easily control the flow direction and velocity of the fluid.

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 include a case for accommodating such a battery module. At this time, the case has the cell assembly 100, the inlet duct 200, the outlet duct 300, and the window 400 in the internal space, and the window 400 is exposed to the outside of the case, So that the fluid can flow into the cell assembly 100. In addition, the battery pack according to the present invention may further include various devices for controlling charge and discharge of the battery module, such as a BMS (Battery Management System), a current sensor, a fuse, and the like.

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.

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, and rightward directions are used, but these terms are for convenience of explanation only, and may vary depending on the position of the object or the position of the observer. Lt; / RTI >

100: cell assembly
200: inlet duct
210: inlet
300: Drain duct
310: Outlet
400: Window
410: Window body
410a: a first main body, 410b: a second main body
411: rim portion, 412: rib
412a: ribs, 412b: second ribs
420: filter

Claims (17)

A cell assembly having a plurality of secondary cells and a flow path formed between the secondary cells;
An inlet duct disposed on one side of the cell assembly to cover one side of the cell assembly and configured to receive an inflow fluid through the inflow port formed with an inflow port;
An outlet duct disposed on the other side of the cell assembly to cover the other side of the cell assembly and configured to have an outlet so that fluid discharged from the flow passage flows out through the outlet; And
A window provided in at least one of the inlet and the outlet and having a filter for filtering particles of a predetermined size or larger,
Lt; / RTI >
The window may include a window body having an opening formed therein to allow fluid to flow in and out of the window,
Wherein the filter covers the opening and is detachable with respect to the window body,
Wherein the window body has a hollow space formed therein and has the filter in an inner space, and an insertion hole is formed on at least one side of the window body so that the filter can be drawn out and inserted therein.
delete delete The method according to claim 1,
Wherein the window body has a shape corresponding to a shape of the inlet or the outlet and is located at least one of an inner side and an outer side of the filter and covers a part of the opening, And a rib coupled to the battery module. The method according to claim 1,
Wherein the window main body includes a first main body having an opening and a second main body located inside the filter, and a second main body having an opening and located outside the filter. 6. The method of claim 5,
At least one of the first body and the second body includes a rim having a shape corresponding to the shape of the inlet or the outlet and a rib covering both the opening and the rim at both ends thereof Features a battery module. 6. The method of claim 5,
Wherein the first body and the second body are coupled to each other while forming an empty space therebetween, and the filter is held in the empty space. 6. The method of claim 5,
Wherein the first body and the second body are coupled and fixed to each other at different portions from the opening. The method according to claim 1,
Wherein the window body comprises a first rib covering a part of an inner opening of the filter inside the filter and a second rib covering a part of an outer opening of the filter outside the filter, module. 10. The method of claim 9,
Wherein the first rib and the second rib are formed in a plate shape so that the inner and outer directions of the first rib and the second rib are inclined at a predetermined angle in a direction parallel to the paper surface. 11. The method of claim 10,
Wherein the first rib and the second rib are formed so that their inclination angles are equal to each other, and the inner and outer directional lines of the surface form one straight line. 11. The method of claim 10,
Wherein the first rib and the second rib are inclined downward from the inner side toward the outer side. 10. The method of claim 9,
Wherein a plurality of the first ribs and the second ribs are provided, respectively. 14. The method of claim 13,
Wherein the plurality of first ribs are stacked in a vertical direction with a predetermined distance therebetween, and the plurality of second ribs are stacked in a vertical direction with a predetermined distance therebetween. The method of claim 14, wherein
Wherein the first rib is configured such that the end of the inner end is positioned higher than the end of the outer end of the second rib in which the inner and outer directional lines of the surface are aligned with the first rib located on the upper layer, . A battery pack comprising the battery module according to any one of claims 1 to 15. 16. A vehicle comprising the battery module according to any one of claims 1 to 15.

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