KR20240001545A - Battery System and Energy storage system including the same, and protection cover used therein - Google Patents

Abstract

The present invention discloses a battery system that effectively protects the electrical connection between battery containers and has excellent installation workability and tolerance tolerance. A battery system according to an aspect of the present invention includes one or more battery modules, a container housing for storing the battery modules in an internal space, and a container terminal located on at least one side of the container housing and configured to be electrically connected to the outside. 2 battery containers; A link bus bar whose both ends are connected to container terminals of different battery containers to electrically connect two battery containers; and a protective cover including two mounting members respectively mounted on the outside of the two battery containers connected by the link bus bars and a cover member coupled to the two mounting members and configured to surround the link bus bars in a flexible state. Includes.

Description

Battery system and energy storage system including the same, and protection cover used therein}

The present invention relates to batteries, and more specifically, to the connection configuration between battery containers in a battery system including a plurality of battery containers.

Recently, as issues such as power shortage and eco-friendly energy have emerged, an energy storage system (ESS) for storing generated power has been receiving a lot of attention. Typically, using such ESS, it is easy to build a power management system such as a Smart Grid System, making it possible to easily control power supply and demand in a specific region or city. In addition, as the commercialization of electric vehicles begins in earnest, such ESS can be applied to electric charging stations that can charge electric vehicles.

ESS can be configured in various forms, but is typically configured to include one or more battery containers. At this time, the battery container may include a plurality of battery modules connected to each other in series and/or parallel. Here, multiple battery modules may be stored inside the battery container through a rack frame or a separate fixing structure.

Moreover, in order to handle very large amounts of power, ESS is often configured to include multiple battery containers. At this time, a battery system may be configured in which a plurality of battery containers are electrically connected to each other through a bus bar. At this time, since the battery cells or battery modules exist inside the battery container, they can be easily protected from the external environment, such as water, wind, insects, etc. However, since the components connecting battery containers, especially the busbar, exist outside the battery container, they may be exposed to the external environment and easily be affected by it.

Additionally, according to the prior art, there is a problem that it is not easy to electrically connect battery containers. Furthermore, in the case of a battery system or energy storage system that includes multiple battery containers, multiple battery containers may be placed in a narrow space to increase energy density. Therefore, a problem may arise where the construction quality of the battery system or energy storage system varies depending on the worker's level of skill or effort.

Additionally, the battery container typically weighs a lot and is much larger in size than a typical battery pack. Therefore, once the battery container is placed in a specific location, it is difficult to change that location. Therefore, tolerances above a certain level are likely to occur in the space for electrical connection between battery containers.

Therefore, the present invention was created to solve the above problems, and includes a battery system and energy storage system that effectively protects the electrical connection between battery containers and has excellent installation workability and tolerance tolerance, as well as protective covers used therein, etc. The purpose is to provide.

However, the technical problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the description of the invention described below.

A battery system according to an aspect of the present invention for achieving the above object includes one or more battery modules, a container housing for storing the battery modules in an internal space, and located on at least one side of the container housing to be electrically connected to the outside. two battery containers having container terminals configured to be connected; A link bus bar whose both ends are connected to container terminals of different battery containers to electrically connect two battery containers; and a protective cover including two mounting members respectively mounted on the outside of the two battery containers connected by the link bus bars and a cover member coupled to the two mounting members and configured to surround the link bus bars in a flexible state. Includes.

Here, the mounting member may be formed in a ring shape, and the cover member may be formed in a tube shape.

Additionally, the cover member may be configured to have flexibility in the horizontal and vertical directions.

Additionally, the cover member may be configured in the form of a sheet that is bent and both ends are fixed.

Additionally, the cover member may be configured in the form of fabric.

Additionally, the cover member may be configured in the form of a corrugated tube.

Additionally, in the battery system according to the present invention, the protective cover may further include a loop member disposed on an upper portion of the cover member.

Additionally, the container housing may have a concave terminal receiving portion formed on at least one side, and the container terminal may be located in the terminal receiving portion of the container housing.

Additionally, the terminal receiving portion may be formed to be open in the top and side directions at the upper edge of the container housing.

In addition, it may further include at least one of an upper terminal cover that closes the upper part of the terminal accommodating part, and a side terminal cover that closes a side part of the terminal accommodating part.

Additionally, at least a portion of the mounting member may be configured to be inserted into the outside of the container housing.

Additionally, the link bus bar may include a plurality of connecting parts coupled to the container terminal and a plurality of cables connecting the plurality of connecting parts.

Additionally, an energy storage system according to another aspect of the present invention includes a battery system according to the present invention.

In addition, the protective cover according to another aspect of the present invention is a protective cover for a battery system in which two battery containers are electrically connected to each other by a link bus bar, and is provided on the outside of the two battery containers connected by the link bus bar, respectively. Two mounted mounting members; and a cover member coupled to the two mounting members and configured to surround the link bus bar in a flexible state.

According to one aspect of the present invention, the electrically connected portion between battery containers can be effectively protected from external environmental factors such as water, wind, dust, insects, etc.

Additionally, according to one aspect of the present invention, workability of the electrical connection configuration between battery containers can be improved.

And, according to one aspect of the present invention, even if there is a tolerance in the connection portion between battery containers, it is possible to effectively respond to this tolerance.

In addition, various other additional effects can be achieved by various embodiments of the present invention. These various effects of the present invention will be described in detail in each embodiment, and descriptions of effects that can be easily understood by those skilled in the art will be omitted.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the invention described later. Therefore, the present invention includes the matters described in such drawings. It should not be interpreted as limited to only .
1 is a front view schematically showing the configuration of a battery system according to an embodiment of the present invention.
Figure 2 is a top view schematically showing the configuration of a battery system according to an embodiment of the present invention.
Figure 3 is a partial enlarged view schematically showing some configurations of a battery system according to an embodiment of the present invention.
Figure 4 is a perspective view schematically showing the configuration of a protective cover according to an embodiment of the present invention.
5 to 7 are diagrams showing various changes in the form of a protective cover according to an embodiment of the present invention.
Figure 8 is a cross-sectional view schematically showing the configuration of a protective cover according to an embodiment of the present invention.
Figure 9 is a perspective view schematically showing the configuration of a protective cover according to another embodiment of the present invention.
Figure 10 is a diagram schematically showing a partial configuration of a battery system according to another embodiment of the present invention.
Figure 11 is a diagram schematically showing a partial configuration of a battery system according to another embodiment of the present invention.
Figure 12 is a perspective view schematically showing a partial configuration of a battery system according to an embodiment of the present invention.
Figure 13 is an exploded perspective view schematically showing some configurations of a battery system according to another embodiment of the present invention.
Figure 14 is a combined perspective view of the configuration of Figure 13.
Figure 15 is a diagram schematically showing a partial configuration of a battery system according to another embodiment of the present invention.
Figure 16 is an exploded perspective view schematically showing a partial configuration of a battery system according to another embodiment of the present invention.
Figure 17 is an exploded perspective view schematically showing a partial configuration of a battery system according to another embodiment of the present invention.
Figure 18 is an exploded perspective view schematically showing a partial configuration of a battery system according to another embodiment of the present invention.
Figure 19 is a diagram schematically showing the configuration of a link bus bar according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, the terms or words used in this specification and claims should not be construed as limited to their usual or dictionary meanings, and the inventor must appropriately use the concept of terms to explain his or her invention in the best way. It must be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle of definability.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not entirely represent the technical idea of the present invention, so at the time of filing the present application, various options that can replace them are available. It should be understood that equivalents and variations may exist.

FIG. 1 is a front view schematically showing the configuration of a battery system according to an embodiment of the present invention, and FIG. 2 is a top view schematically showing the configuration of a battery system according to an embodiment of the present invention. Figure 3 is a partial enlarged view schematically showing some configurations of a battery system according to an embodiment of the present invention. In particular, FIG. 3 can be said to be an enlarged view showing a partial configuration of portion A1 of FIG. 2. Additionally, in FIGS. 1 and 2, for convenience of explanation, the material is partially removed, cut, or shown in a transparent form.

1 to 3, the battery system according to the present invention includes a battery container 100, a link bus bar 200, and a protective cover 300.

The battery container 100 includes a battery module 110, a container housing 120, and a container terminal 130.

Here, the battery module 110 may be configured to store and discharge power by storing a plurality of battery cells (secondary batteries) in a module case, and may be provided with one or more. In particular, the battery container 100 may be provided with a plurality of battery modules 110, and in this case, the plurality of battery modules 110 may be electrically connected in series and/or parallel. Additionally, in order to facilitate arrangement or stacking of the multiple battery modules 110, the battery container 100 may include a rack frame. The rack frame can store a plurality of battery modules 110 by stacking them in the horizontal and/or vertical directions. The battery container 100 according to the present invention can employ various battery modules 110 known at the time of filing of the present invention. Also, since the specific configuration of the battery module 110 is widely known at the time of filing the present invention, detailed description thereof will be omitted.

The container housing 120 may be configured to store the battery module 110 in its internal space. In particular, the container housing 120 has an empty space inside and is formed in a substantially rectangular parallelepiped shape, so that a plurality of battery modules 110 can be accommodated in the inner space. Moreover, inside the container housing 120, a rack frame or partition structure that can accommodate a plurality of battery modules 110 may be further accommodated or provided. The container housing 120 may be made of a metal material such as steel, but the present invention is not limited to this specific material of the container housing 120.

The container terminal 130 may be located on at least one side of the container housing 120 and configured to be electrically connected to the outside. For example, the container terminal 130 may be configured to be connected to another battery container 100. In particular, the container terminal 130 may be configured to allow main DC power, which is the charging and discharging power for the battery container 100, to flow. In this case, the container terminal 130 may be referred to as a main DC power terminal. And, the container terminal 130 may be provided with two types of terminals, that is, a container anode terminal and a container cathode terminal, as shown in FIG. 3, etc., so that charging and discharging power can flow. The container terminal 130 may be installed on a plurality of sides of the container housing 120. For example, as shown in FIG. 2, the container terminal 130 may be installed on the left and right sides of one container housing 120, respectively. In this case, inside one battery container 100, a main power line may be connected between the container terminals 130 installed on the left and right sides. This main power line can provide a path through which not only the power of the battery container 100 but also the power of other battery containers 100 are transmitted. In particular, a plurality of battery containers 100 may be electrically connected to each other in parallel, and in this case, the main power line of each battery container 100 may allow power from other battery containers 100 to be transmitted.

A plurality of the battery containers 100 may be included in the battery system. For example, as shown in Figures 1 and 2, etc. The battery system may include at least two battery containers 100.

The link bus bar 200 has two ends, and both ends can be connected to container terminals 130 of different battery containers 100. To this end, the link bus bar 200 may be configured to extend long in at least one direction. For example, the link bus bar 200 is configured to extend long in the left and right directions, and both ends may be connected to container terminals 130 of different battery containers 100. More specifically, in a battery system including a left container and a right container, the link bus bar 200 has its left end connected to the container terminal 130 of the left container, and its right end connected to the container terminal 130 of the right container. can be connected to

The link bus bar 200 is connected to the container terminals 130 of different battery containers 100, and can electrically connect a plurality of battery containers 100 to each other. For example, the link bus bar 200 electrically connects between two battery containers 100, that is, between the left container 100L and the right container 100R, in the embodiment shown in FIGS. 1 to 3. You can connect. In particular, the link bus bar 200 can allow DC power, that is, charge/discharge power of the battery system, to flow between different battery containers 100.

The protective cover 300 may be mounted on the container housing 120 of the battery container 100 to protect the link bus bar 200. The configuration of this protective cover 300 will be described in more detail with additional reference to FIG. 4 .

Figure 4 is a perspective view schematically showing the configuration of the protective cover 300 according to an embodiment of the present invention.

Referring to FIG. 4, the protective cover 300 includes a mounting member 310 and a cover member 320.

The mounting member 310 may be mounted on the outside of two battery containers 100 electrically connected by a link bus bar 200. In particular, two mounting members 310 may be provided in one protective cover 300, and the two mounting members 310 may be fixed to different battery containers 100. For example, as shown in FIGS. 1 and 2, a protective cover 300 may be installed in the space between two battery containers 100 arranged adjacently in the left and right directions. At this time, one mounting member 310 provided on the protective cover 300, that is, the left mounting member 310L, is attached and fixed to the left container, and the other mounting member 310, that is, the right mounting member 310R is It can be attached and fixed to the right container.

The mounting member 310 may be fastened to the container housing 120 of the battery container 100 using a bolting method. In this case, the mounting member 310 may have a fastening hole formed as indicated by H1 in FIG. 4. Also, the bolt may be inserted and fixed into the container housing 120 by penetrating the fastening hole H1 of the mounting member 310. However, the present invention is not necessarily limited to the fastening method between the mounting member 310 and the container housing 120. That is, the mounting member 310 may be mounted and fixed to the container housing 120 in various other ways. In addition, the mounting member 310 may be made of a material with high mechanical strength, such as metal, in order to secure fastening strength with the container housing 120 and stably support the cover member 320. there is. In addition, the cover member 320 may be made of a plastic material with higher strength than the cover member 320.

The cover member 320 may be coupled and fixed to two mounting members 310 between the two mounting members 310 . For example, the left end of the cover member 320 may be fixed to the left mounting member 310L, and the right end may be fixed to the right mounting member 310R. At this time, the cover member 320 may be fixed to the mounting member 310 by various methods such as a bolting method, a hook method, or an adhesive method.

The cover member 320 may be configured to surround the link bus bar 200 in a flexible state. That is, the cover member 320 may have a flexible material or shape, and may be located outside the link bus bar 200. In particular, the cover member 320 can protect the link bus bar 200 by forming an empty space inside the cover member 320 to accommodate the link bus bar 200 in the internal space. Moreover, between the two mounting members 310 spaced apart in the left and right directions, the cover member 320 may be configured to cover the upper, lower, front, and rear sides of the link bus bar 200.

According to this implementation configuration of the present invention, exposure of the link bus bar 200 to the outside can be prevented in the space between the two battery containers 100. Accordingly, the electrical connection between the battery containers 100 can be protected more reliably. In particular, in the case of systems such as ESS, they are often placed outdoors. According to the above implementation configuration, the electrical connection configuration of the battery container 100 can be safely protected from various external factors. For example, the link bus bar 200 of the present invention can be safely protected from various external climatic and animal factors such as water, wind, heat, dust, insects, birds, etc.

In addition, according to the above implementation configuration, excellent tolerance response ability can be secured with respect to the size of the space between the two battery containers 100. That is, the protective cover 300 may be installed between the two battery containers 100, and the space between the two battery containers 100 may have various sizes. Furthermore, even if the seating position of each battery container 100 is determined in the process of building a battery system, the position of the battery container 100 may change depending on the situation during the installation process. At this time, the space between the battery containers 100 may vary in size. According to the above embodiment, the cover member 320 is flexible, so the protective cover 300 is deformed into an appropriate shape for the battery container 100. By being installed, the protection function of the link bus bar 200 can be performed stably.

The protective cover 300 may be configured to be detachable from the outer surface of the container housing 120. For example, for two adjacent battery containers 100, two mounting members 310 may be configured to be attachable and detachable to the sides of each container housing 120 facing each other. At this time, the mounting member 310 can be mounted on and detached from the container housing 120 by inserting or removing a bolt into the fastening hole H1 while being mounted on the container housing 120. And, due to the mounting and detachment of the mounting member 310, the protective cover 300 may be configured to surround the outside of the link bus bar 200.

As a more specific example, for two battery containers 100 arranged in the left and right directions, that is, a left container and a right container, the link bus bar 200 may be coupled to the right container terminal 130 of the left container. And, with the cover member 320 surrounding the link bus bar 200, the left mounting member 310L can be bolted around the right container terminal 130 of the left container. And, after the link bus bar 200 is coupled to the left container terminal 130 of the right container, the right mounting member 310R can be bolted and fixed around the left container terminal 130 of the right container.

According to this implementation configuration, construction of the battery system can be accomplished more easily. That is, after the battery container 100 is moved to a designated location, the protective cover 300 can be installed. Therefore, since the battery container 100 is moved without the protective cover 300 installed, the protective cover 300 is prevented from being damaged or the movement of the battery container 100 is hindered when the battery container 100 is moved. can do.

The mounting member 310 may be formed in a ring shape, as shown in FIG. 4 and the like. In particular, the mounting member 310 may be formed in a square ring shape. Additionally, the cover member 320 may be formed in the form of a hollow tube. Moreover, the cover member 320 may be formed in the shape of a square tube. Additionally, the cover member 320 and the two mounting members 310 may be coupled so that the hollow portion of the cover member 320 communicates with the hollow portion of the two mounting members 310 . Additionally, in the process of installing the protective cover 300, at least a portion of the link bus bar 200 may pass through the hollow of the cover member 320 and the mounting member 310.

According to this implementation configuration of the present invention, a configuration of positioning the protective cover 300 on the outside of the link bus bar 200 to protect the link bus bar 200 can be easily achieved. Additionally, according to the above-described implementation configuration, the task of mounting the protective cover 300 to the container housing 120 can become more convenient. In particular, the installation of the protective cover 300 is possible by fixing the mounting member 310 to the container housing 120 while the link bus bar 200 penetrates the hollow of the mounting member 310 and the cover member 320. It can be completed easily.

The cover member 320 may be configured to have flexibility in the horizontal and vertical directions. This will be described in more detail with reference to FIGS. 5 to 7 .

5 to 7 are diagrams showing various changes in shape of the protective cover 300 according to an embodiment of the present invention. Referring to FIGS. 5 to 7 , the cover member 320 may be configured to change its shape when the relative positions of the two mounting members 310 change.

First, referring to the embodiment of FIG. 5, the cover member 320 may be able to change its shape due to flexibility even if the Y-axis direction positions among the horizontal positions of the two mounting members 310 are different. More specifically, the right mounting member 310R can be said to be located ahead of the left mounting member 310L by B1 in the +Y-axis direction. At this time, even if there is a difference in the Y-axis direction positions of both ends of the cover member 320, the shape may change due to flexibility. Also, there may be no significant disruption in the coupling of the cover member 320 to the mounting member 310 or in the protection function of the link bus bar 200 existing in the internal space. Moreover, even if the position of the right mounting member 310R changes as shown by arrow C1, the protective cover 300 can adaptively cope with this change in position and change its shape.

Next, referring to the embodiment of FIG. 6, the cover member 320 may be able to change its shape due to flexibility even if the X-axis direction positions among the horizontal positions of the two mounting members 310 are different. That is, even if the right mounting member 310R moves in the

Additionally, referring to the embodiment of FIG. 7, the cover member 320 may change its shape appropriately even if the Z-axis direction positions, which are the vertical positions of the two mounting members 310, are different. That is, even when the right mounting member 310R moves in the Z-axis direction as shown by arrow C3, resulting in an error equal to B3 compared to the design dimension, the cover member 320 is stably attached to the mounting member 310 through a change in shape. It is combined and can protect the link busbar 200.

According to the above embodiment, due to the flexibility of the cover member 320, even if there is a certain degree of difference in various conditions, especially the horizontal and vertical positions of the two battery containers 100 on which the protective cover 300 is installed, The cover member 320 can be stably mounted on the battery container 100.

The cover member 320 may be configured in the form of a sheet that is bent and both ends are fixed. This will be described in more detail with reference to FIG. 8.

Figure 8 is a cross-sectional view schematically showing the configuration of the protective cover 300 according to an embodiment of the present invention. In particular, FIG. 8 can be said to be a cross-sectional view taken along line A2-A2' in FIG. 4.

Referring to FIG. 8, the cover member 320 may be configured to form a hollow by bending and rolling one sheet. Then, both ends of the bent sheets meet each other and can be coupled to each other. That is, a pipe shape can be formed by bending a flexible sheet member and joining both ends that were originally separated. At this time, both ends joined by bending may be formed to overlap each other, such as the part indicated by A3. And, these overlapping parts can be coupled and fixed to each other in various ways. In particular, overlapping portions of both ends of the sheet member may be bonded to each other using an adhesive. In addition, the jointly fixed portion of the two ends, such as the adhesive portion, may be formed to extend long from one side to the other side along the edge direction of the end portion, such as the X-axis direction.

Moreover, the joined portion of the sheet member, especially the overlapped portion, may be located at the bottom of the cover member 320 . For example, referring to the configuration shown in FIG. 8, when the sheet member is bent to form a pipe of approximately square shape, it may have four corners: upper, lower, left, and right. At this time, the coupling portion of the sheet member may be located at the lower edge.

According to this embodiment of the present invention, the protective cover 300 can be manufactured in a relatively simple manner. In addition, according to the above implementation configuration, the prevention performance against foreign matter penetration can be further improved. In particular, when the cover member 320 is manufactured in the manner described above, there may be a risk of foreign substances such as water or dust penetrating into the end joining portion of the sheet member. However, according to the above-mentioned configuration, it can be said that the possibility of penetration of such foreign substances is very low. Moreover, when it rains when the battery system according to the present invention is placed outdoors, rainwater may flow into the end joining portion of the sheet member, such as A3. Inflow into the overlapping area can be suppressed. That is, according to the above implementation configuration, the waterproof and dustproof performance of the protective cover 300 can be further improved even with a simple structure.

Additionally, the cover member 320 may be configured in the form of fabric. That is, the cover member 320 may have a sheet shape woven using fibers. Additionally, the cover member 320 may be manufactured in such a fabric form and then bent as described in FIG. 8 to have a hollow structure. Additionally, the cover member 320 may be configured to have waterproof performance. For example, the cover member 320 may be configured with a waterproof layer coated on one or both sides of a fabric base. For example, the cover member 320 may be made of a tarpaulin material. For example, the cover member 320 may be made of a tarpaulin material.

According to this implementation configuration of the present invention, a protective cover 300 that is easy to manufacture and is light in weight can be implemented. In addition, according to the above-mentioned configuration, the protective cover 300, which has excellent flexibility and can easily change its shape depending on the location or environment in which the protective cover 300 is mounted, can be more easily provided.

Figure 9 is a perspective view schematically showing the configuration of a protective cover 300 according to another embodiment of the present invention. For each embodiment included in this specification, including this embodiment, detailed description of parts to which the description of other embodiments can be applied in the same or similar manner will be omitted, and the description will focus on parts where there are differences.

Referring to FIG. 9, the cover member 320 may be configured in the shape of a corrugated tube. For example, the cover member 320 is configured in the form of a tube with both ends fixed to the left mounting member 310L and the right mounting member 310R, and a plurality of wrinkles are formed in the left and right directions (X-axis direction). It can be configured as follows. And, when the distance between the left mounting member 310L and the right mounting member 310R becomes closer or farther away, these wrinkles may be folded or straightened. Furthermore, the cover member 320 may have a bellows shape. Here, the material of the cover member 320 may be selected from various plastics. Additionally, in the cover member 320, iron cores, etc. may be inserted into at least some of the wrinkles in order to provide such a wrinkle shape, maintain the shape above a certain level, or improve strength.

According to this embodiment of the present invention, a sufficient space for accommodating the link bus bar 200 present inside the cover member 320 can be secured even when the distance or position between the two mounting members 310 changes. . Additionally, according to the above-mentioned configuration, the cover member 320 can more effectively change its length between the two mounting members 310 in response to a change in position in a specific direction, that is, a change in position in the X-axis direction. Therefore, the mounting state and function of the protective cover 300 can be maintained more stably even when the position changes in this direction.

Figure 10 is a diagram schematically showing a partial configuration of a battery system according to another embodiment of the present invention. Moreover, in Figure 10, some components are shown in separated form for convenience of explanation.

Referring to FIG. 10, the protective cover 300 may further include a loop member 330. The loop member 330 may be formed in a plate shape and placed on top of the cover member 320. In particular, the loop member 330 may be configured to cover the top of the cover member 320. For example, the loop member 330 may be formed in a substantially square plate shape and may be configured to cover all or most of the cover member 320 when viewed from the top. Furthermore, the loop member 330 may be configured to have a larger size than the cover member 320 in the left-right direction (X-axis direction) and the front-back direction (Y-axis direction). Here, the loop member 330 may be positioned to be spaced upward from the cover member 320, but may also be positioned so that at least a portion of it is in contact with the cover member 320.

According to this embodiment of the present invention, the performance of the protective cover 300 to prevent penetration of foreign substances can be further improved. In particular, during rainy weather, raindrops may approach from the upper side of the protective cover 300, and the roof member 330 primarily blocks the raindrops, thereby preventing the raindrops from falling into the cover member 320 and/or the mounting member 310. This can be reduced. In addition, according to the above implementation configuration, durability of the cover member 320 and/or the mounting member 310 can be further improved. In particular, in the case of the cover member 320, if it is made of a material with strong flexibility, durability may be somewhat weak. However, according to the above-mentioned configuration, the disadvantage in durability of the cover member 320 can be compensated for by the loop member 330. You can.

In addition, the loop member 330 may be formed to have a length in the left and right directions longer than the left and right separation distance between the two battery containers 100 arranged adjacent to each other in the left and right directions. For example, referring to the exemplary configuration of FIG. 10, the left-right (X-axis direction) width of the roof member 330 will be formed to be larger than the left-right separation distance between the left container 100L and the right container 100R. You can. In addition, fastening holes as indicated by H3 may be formed at both left and right ends of the roof member 330, and fastening holes as indicated by H4 may be formed in the two container housings 120, respectively. Then, the loop member 330 can be fastened to the container housing 120 by passing the bolt through the fastening hole H3 of the roof member 330 and the fastening hole H4 of each container housing 120.

According to this implementation configuration of the present invention, the waterproof and dustproof performance of the roof member 330 can be further improved. In particular, according to the above implementation configuration, it is possible to more effectively prevent water or foreign substances from penetrating into the fastening area between the mounting member 310 and the container housing 120.

Additionally, the loop member 330 may have a bent portion, such as the portion indicated by E in FIG. 10 . This bent portion E may have a shape bent approximately vertically downward to cover the cover member 320 at the end of the loop member 330. For example, the loop member 330, in a substantially plate-shaped state, may have a front side (-Y-axis direction side) end and a rear side (+Y-axis direction side) end bent in a downward direction.

According to this embodiment of the present invention, the protection performance of the cover member 320 of the roof member 330 can be further improved.

Figure 11 is a diagram schematically showing a partial configuration of a battery system according to another embodiment of the present invention. In particular, FIG. 11 can be said to be another modified example of the loop member 330 fastened to the upper space between two container housings 120 as shown in FIG. 10.

Referring to FIG. 11, the loop member 330 may be formed with an inclined surface. More specifically, the roof member 330 may have inclined surfaces, as indicated by S1 and S2, formed on the outer surface, such as the upper surface. These inclined surfaces S1 and S2 may be configured to be inclined at a predetermined angle from the horizontal plane (X-Y plane).

According to this implementation configuration of the present invention, it is possible to prevent foreign substances such as rain, snow, or dust from easily remaining on the roof member 330. Accordingly, by preventing a large load from being applied to the roof member 330, deformation or damage of the roof member 330 can be prevented. In addition, by quickly discharging these foreign substances to the outside, it is possible to further prevent foreign substances from going from the upper part of the roof member 330 to the cover member 320 or the mounting member 310.

Additionally, the loop member 330 may have a concave portion on the outer surface, such as the portion indicated by G1 in FIG. 11. For example, the concave portion G1 may be formed in a concave shape from the upper surface of the loop member 330 downward. This concave portion G1 may be implemented through bending or bending of the loop member 330. Alternatively, the concave portion G1 may be formed to be dug to a predetermined depth on the surface of the loop member 330. Here, the inclined surfaces S1 and S2 of the roof member 330 may be configured to gradually slope downward toward the concave portion G1.

According to this embodiment of the present invention, the external discharge path of foreign substances placed on the upper surface of the roof member 330 may be limited by the concave portion G1. Therefore, it is possible to more effectively prevent foreign substances from heading to specific parts of the battery system. Also, in this case, foreign substances in contact with the outer surface of the roof member 330 can be more easily discharged to the outside.

For example, in the exemplary configuration of FIG. 11 , when rain falls on the upper surface of the roof member 330, rainwater may fall on the left slope S1 and the right slope S2 of the roof member 330. At this time, rainwater may flow in the direction of arrows F1 and F2 and flow into the concave portion (G1). And, rainwater flowing into the concave portion G1 may flow toward the front or rear side along the concave portion and then be discharged to the outside of the roof member 330, as indicated by the dotted arrow. In other words, it can be said that the discharge path for rainwater or other foreign substances that have fallen on the upper surface of the roof member 330 is defined by the concave portion G1.

In particular, the concave portion G1 of the loop member 330 may be located in the central portion. In addition, the roof member 330 may have inclined surfaces S1 and S2 located on both sides of the concave portion G1. In this case, foreign matter such as rain or snow that falls on the upper surface of the roof member 330 may be directed toward the central portion of the roof member 330 in the left and right directions. And, because of this, the performance of preventing penetration of foreign substances by the roof member 330 can be further improved.

Furthermore, coupling holes H3 may be present at the left and right ends of the roof member 330 for coupling the roof member 330 to the container housing 120. Additionally, as shown in FIG. 10 , container terminals 130 may be located close to the left and right ends of the loop member 330 .

Therefore, according to the above-mentioned configuration, when foreign substances such as rain or snow fall on the upper part of the roof member 330, it is possible to prevent foreign substances from penetrating into the coupling hole H3, the container terminal 130, or the mounting member 310. You can.

Figure 12 is a perspective view schematically showing a partial configuration of a battery system according to an embodiment of the present invention. More specifically, in Figure 12, only the battery container 100 is shown.

Referring to FIG. 12, in the battery system according to the present invention, the container housing 120 of the battery container 100 may be formed with a terminal receiving portion, such as a portion indicated by D1. This terminal receiving portion D1 may be formed in a concave shape inward on at least one side of the container housing 120. And, the container terminal 130 may be located in the terminal receiving portion of the container housing 120. That is, the container terminal 130 is provided in a form exposed to the outside of the container housing 120. In particular, it may be provided outside a concave portion of the container housing 120.

According to this embodiment of the present invention, the protection structure of the container terminal 130 and the link bus bar 200 connected to the container terminal 130 can be more easily achieved. That is, since the container terminal 130 is located in a concave portion called the terminal receiving portion D1 in the container housing 120, the container terminal 130 can be easily protected by covering only the open portion of the concave portion.

In particular, the terminal receiving portion D1 may be located at the upper edge of the container housing 120. For example, in the embodiment of FIG. 12, the terminal receiving portion D1 of the left container 100L may be located at the upper right corner of the container housing 120. Additionally, in the embodiment of FIG. 12, the terminal receiving portion D1 of the right container 100R may be located at the upper left corner of the container housing 120.

In particular, the terminal receiving portion D1 may be formed so that the container terminal 130 is exposed in the top and side directions. Here, the side direction may be toward the adjacent battery container 100. For example, in the exemplary configuration of FIG. 12 , the terminal accommodating portion D1 of the left container 100L may be configured to be open in the upper and right directions. Accordingly, the container terminal 130 of the left container 100L may be exposed in the upper and right directions. Additionally, the terminal receiving portion D1 of the right container 100R may be configured to be open in the upper and left directions. Accordingly, the container terminal 130 of the right container 100R may be exposed in the upper and left directions.

According to this implementation configuration of the present invention, construction of a battery system can be accomplished more easily. For example, as shown in FIG. 12, when two battery containers 100L and 100R are arranged adjacent to each other in the left and right directions, each container terminal 130 will be exposed in the upper and side directions of the adjacent parts. You can. Accordingly, the worker can more easily perform the work of connecting or disconnecting the link bus bar 200 or the protective cover 300 to the exposed container terminal 130. In particular, according to the above implementation configuration, installation or replacement work of the link bus bar 200 can be performed more smoothly.

In this implementation configuration, the mounting member 310 may be mounted on the side opening of the terminal receiving portion D1. In particular, the mounting member 310 formed in a ring shape may be mounted on the container housing 120 in a form surrounding the side opening of the terminal receiving portion D1.

Figure 13 is an exploded perspective view schematically showing some configurations of a battery system according to another embodiment of the present invention. Figure 14 is a combined perspective view of the configuration of Figure 13.

Referring to FIGS. 13 and 14 , the battery system according to the present invention may further include an upper terminal cover 410 and/or a side terminal cover 420. The upper terminal cover 410 may be configured to close the upper opening of the terminal receiving portion D1. That is, the upper terminal cover 410 may be configured to cover the upper part of the open portion of the terminal receiving portion D1. Additionally, the side terminal cover 420 may be configured to close the side opening of the terminal receiving portion D1. For example, in the embodiments of FIGS. 13 and 14 , the side terminal cover 420 may be configured to cover the left side of the opening with respect to the terminal receiving portion D1.

According to this embodiment of the present invention, the terminal accommodating portion and/or the link bus bar 200 are used in various situations, such as before or after building a battery system and before or after connecting the link bus bar 200 of the battery container 100. can protect. In particular, the upper terminal cover 410 can seal the top of the open portion of the terminal accommodating portion D1 even when the protective cover 300 is coupled to the battery container 100 after construction of the battery system. For example, in the exemplary configuration of FIG. 10 , the upper terminal cover 410 is not shown, but the upper terminal cover 410 may be mounted on an open portion where the container terminal 130 is exposed upward. However, the upper terminal cover 410 may be temporarily removed during the construction of the battery system, exposing the container terminal 130 to the outside, for example, toward the top, as shown in FIG. 10 . In particular, in the process of connecting the link bus bar 200 to the container terminal 130, the upper terminal cover 410 may be removed. And, after the connection process of the link bus bar 200 is completed, the upper terminal cover 410 may be coupled to cover the top of the open portion of the terminal receiving portion D1.

Meanwhile, the side terminal cover 420 is not coupled to the terminal accommodating portion D1 when the battery system is built, and accommodates the terminal in a state where the battery system is not built, for example, when the battery container 100 is being transported. It may be coupled to part (D1). Alternatively, the side terminal cover 420 may be coupled to the terminal receiving portion D1 provided in a portion not connected to another battery container 100 even when the battery system is built. For example, in the terminal receiving portion D1 provided at the upper right corner of the battery container 100 disposed on the rightmost side of the plurality of battery containers 100 arranged and connected in the left and right direction, the upper terminal cover 410 and the side All terminal covers 420 can be combined. On the other hand, in order to connect to the other battery container 100, only the upper terminal cover 410 is coupled to the terminal receiving portion (D1) provided at the upper left corner of the battery container 100 disposed on the far right, and the side terminal cover ( 420) may not be combined. In particular, the portion of the container housing 120 where the side terminal cover 420 is mounted may be the portion where the protective cover 300 is mounted. Therefore, it can be said that when the protective cover 300 is mounted, the side terminal cover 420 is not mounted.

Figure 15 is a diagram schematically showing a partial configuration of a battery system according to another embodiment of the present invention.

Referring to FIG. 15, the battery system according to the present invention includes an upper terminal cover 410 and a side terminal cover 420, similar to the embodiment of FIGS. 13 and 14, but the upper terminal cover 410 and the side terminal The cover 420 may be configured to slide with respect to the container housing 120 .

Looking more specifically, the upper terminal cover 410 is mounted on the upper surface of the container housing 120, and can be configured to slide in the left and right direction (X-axis direction), as indicated by arrow E1 in FIG. 15. Additionally, the upper terminal cover 410 may be configured to open and close the upper end of the open portion of the terminal accommodating portion D1 due to this sliding operation. For example, in the process of coupling the link bus bar 200 to the container terminal 130, the upper terminal cover 410 is slid in the +X-axis direction to open the upper part of the terminal receiving portion D1, thereby protecting the operator. Link busbar 200 connection work can be performed smoothly. And, when this connection work is completed, the upper terminal cover 410 can be slid in the -X-axis direction to close the top of the terminal receiving portion D1.

Additionally, the side terminal cover 420 is mounted on the side of the container housing 120 and may be configured to slide in the up and down direction (Z-axis direction), as indicated by arrow E2 in FIG. 15 . Additionally, the side terminal cover 420 may be configured to open and close the open side portion of the terminal accommodating portion D1 through this sliding operation. For example, during transportation of the battery container 100, the side terminal cover 420 may slide in the +Z-axis direction to close the side of the terminal accommodating portion D1. And, after transportation of the battery container 100 is completed, the side terminal cover 420 may slide in the -Z-axis direction to expose the side portion of the terminal accommodating portion D1. Accordingly, the connection of the link bus bar 200 and the installation of the protective cover 300 can be performed smoothly.

Meanwhile, as shown in the portion indicated by F in FIG. 15, the battery container 100 may further include a coupling reinforcement member. The coupling reinforcement member (F) may be located in the terminal receiving portion (D1) of the container housing 120. In particular, the coupling reinforcement member F may be formed to extend long along the edge of the container housing 120. Moreover, the coupling reinforcing member F is located at a corner where the terminal receiving portion D1 is formed, so that the open portion of the terminal receiving portion D1 can be divided into an upper direction and a side direction.

This coupling reinforcement member (F) can be configured to fasten and secure various components included in the battery system of the present invention. For example, at least some components of the protective cover 300 in the various embodiments described above may be fixed to the coupling reinforcing member F. For example, the upper edge of the mounting member 310 formed in the shape of a square ring may be bolted to the side of the coupling reinforcement member (F). In addition, the end portion of the loop member 330 described in the embodiment of FIGS. 10 and 11 may be coupled and fixed to the upper surface of the coupling reinforcement member (F). In addition, the upper terminal cover 410 and/or the side terminal cover 420 shown in the embodiments of FIGS. 13 to 15 may be coupled and fixed to the coupling reinforcement member (F). Furthermore, the coupling reinforcement member (F) may have a fastening hole, as indicated by H4 in FIG. 10, for fastening the coupling reinforcement member (F) with other components.

Figure 16 is an exploded perspective view schematically showing a partial configuration of a battery system according to another embodiment of the present invention.

Referring to FIG. 16 , the mounting member 310 may be configured so that at least a portion of it is inserted into the outside of the container housing 120 . More specifically, an insertion groove as indicated by J4 may be formed on the outside of the container housing 120. Moreover, this insertion groove J4 may have the shape of a protrusion that protrudes from the outer surface of the container housing 120 in the side direction and then is bent and extended upward. And, when the mounting member 310 is mounted on the container housing 120, at least a portion of the mounting member 310 may be inserted into the insertion groove J4 of the container housing 120.

In particular, when the mounting member 310 is formed in a square ring shape, four frames (corners) may be present in the mounting member 310, as indicated by I1 to I4. At this time, one of the frames, the I4 frame, may be mounted in the insertion groove J4 of the container housing 120, as indicated by K1 in the drawing. And, the remaining other frames, that is, frames I1 to I3, have fastening holes H1 formed therein and can be coupled to the fastening hole H2 formed in the container housing 120 by bolting or the like. In particular, the insertion groove J4 of the container housing 120 may be located below the terminal receiving portion D1. Then, the lower part of the mounting member 310, that is, the lower frame I4 of the mounting member 310, may be inserted into the insertion groove J4 of the container housing 120.

According to this embodiment of the present invention, the coupling force between the protective cover 300 and the container housing 120 can be further improved. Additionally, according to the above implementation configuration, the assembly process of mounting the protective cover 300 to the container housing 120 can be made more convenient. In particular, in the process of mounting the mounting member 310 to the container housing 120, bolting the lower part of the mounting member 310 may be difficult due to the cover member 320, etc. However, as in the embodiment of FIG. 16, according to a configuration in which the lower portion of the mounting member 310 is inserted into the container housing 120 and the side and upper portions of the mounting member 310 are bolted, the mounting member 310 The mounting process may become easier.

Figure 17 is an exploded perspective view schematically showing a partial configuration of a battery system according to another embodiment of the present invention.

Referring to FIG. 17, an insertion groove as indicated by J1 may be formed on the outside of the container housing 120. This insertion groove (J1) may be located on the upper side with respect to the side opening of the terminal receiving portion (D1). This upper side insertion groove J1 may also be configured to protrude outward from the outer surface of the container housing 120. In particular, the upper side insertion groove J1 may have a shape that protrudes from the outer surface of the container housing 120 in the side direction and then is bent and extended in the downward direction. In addition, the mounting member 310 may be configured so that the upper frame (I1) is inserted into the upper side insertion groove (J1) in the upper side, for example, in the form of a square frame.

According to this implementation configuration of the present invention, the waterproof performance and dustproof performance of the protective cover 300 can be further improved. In particular, in situations where it rains or snows, the risk of water flowing in through a gap between the upper frame I1 and the container housing 120 among various parts of the mounting member 310 may be relatively high. However, according to the above-mentioned configuration, the upper frame I1 of the mounting member 310 is configured to be inserted into the container housing 120, so it is more certain that water or other foreign substances are prevented from flowing into the upper frame I1. It can be prevented. That is, according to the above implementation configuration, the sealing force between the container housing 120 and the protective cover 300 can be further improved. In particular, when the upper insertion groove J1 is configured to protrude outward as in the above embodiment, this inflow prevention effect can be further increased.

Furthermore, as shown in FIG. 17, the insertion configuration of the mounting member 310 may be provided on both the upper frame I1 and the lower frame I4. In this case, the protective cover 300 may be inserted into the upper insertion groove J1 and the lower insertion groove J4 in a sliding manner, as indicated by arrow K2 in FIG. 17 . Additionally, a bolting fastening configuration may be applied to the front and rear frames I3 and I4 to which the insertion configuration of the mounting member 310 is not applied. At this time, when this sliding type fastening is completed, the link bus bar 200 may penetrate the protective cover 300 and be introduced into the terminal receiving portion D1. According to this implementation configuration, the assembly, coupling, and sealing force of the protective cover 300 can be further improved.

The protective cover 300 according to the present invention can further improve the airtightness of the portion in contact with the container housing 120 using a method such as silicone molding. For example, the mounting member 310 formed in the shape of a square ring may have sealing portions formed of a material such as silicon along four frames (corners).

Figure 18 is an exploded perspective view schematically showing a partial configuration of a battery system according to another embodiment of the present invention.

Referring to FIG. 18, a mounting groove for mounting the mounting member 310 may be formed on the outside of the container housing 120, as indicated by M1. The mounting groove M1 may be formed to be dug a predetermined distance from the outer surface of the container housing 120 inward. This mounting groove M1 may be formed in a shape and position corresponding to the shape and mounting position of the mounting member 310. For example, as shown in FIG. 18, when the mounting member 310 is formed in the shape of a square ring, the mounting groove M1 may also be formed in the shape of a square ring.

According to this embodiment of the present invention, the coupling between the container housing 120 and the mounting member 310 can be further improved. In addition, according to the above embodiment, the mounting groove M1 serves as a guide for the coupling position of the mounting member 310, so that the assembling of the protective cover 300 can be further improved. In addition, according to the above-mentioned configuration, the mounting member 310 is inserted into the mounting groove M1, thereby more effectively preventing the intrusion of water or other foreign substances into the joint portion of the mounting member 310 and the container housing 120. can do.

Additionally, the mounting member 310 and/or the container housing 120 may be provided with magnets at portions where they are coupled to each other. For example, the mounting member 310 may include a permanent magnet, and the container housing 120 may be made of a material to which the permanent magnet sticks, such as a ferromagnetic material such as iron.

According to this implementation configuration of the present invention, the coupling force and assembly properties of the mounting member 310 can be further improved. In particular, even if the mounting member 310 is bolted to the container housing 120, if the position of the mounting member 310 is stably fixed by a magnet, the bolting operation can be performed more easily.

Figure 19 is a diagram schematically showing the configuration of the link bus bar 200 according to an embodiment of the present invention.

Referring to FIG. 19, the link bus bar 200 according to the present invention may include a connecting portion 210 and a cable 220. Here, the connecting portion 210 may be provided in a number corresponding to the number of battery systems connected by the link bus bar 200. For example, when the link bus bar 200 electrically connects two battery systems, the connecting portion 210 may be provided in two parts, as shown in FIG. 19. Alternatively, when the link bus bar 200 connects three battery systems, the connecting portion 210 may be provided in three parts. Of course, the number of connecting units 210 may be greater than the number of connected battery systems. The connecting part 210 may be a part of the link bus bar 200 that is directly contacted and coupled to the container terminal 130. Accordingly, the connecting portion 210 may have a fastening structure corresponding to the container terminal 130 so that it can be coupled and fixed to the container terminal 130. For example, the connecting portion 210 may be configured to have a fixing hole formed therein and be bolted to the container terminal 130.

The cable 220 may be configured to connect the plurality of connecting units 210. For example, as shown in FIG. 19, in the case of a link bus bar 200 provided with two connecting parts 210, a cable 220 can be connected between the two connecting parts 210. In other words, both ends of the cable 220 may be connected between different connecting portions 210 . The cable 220 may be formed by covering the surface of a metallic wire, such as copper, with a non-conducting material, such as polymer. In particular, in the link bus bar 200 of the battery system according to the present invention, a plurality of cables 220 may be provided. For example, the link bus bar 200 may be configured with six cables 220 between two connecting portions 210. At this time, the plurality of cables 220 are not fixed to each other and may be configured to be separable. For example, both ends of the six cables 220 are connected to the connecting portion 210, but the remaining portions excluding both ends, especially the central portion, may be configured to be separated from each other.

According to this implementation configuration of the present invention, it is possible to more effectively cope with tolerances that occur when constructing a battery system. In particular, when two battery systems are placed adjacent to each other, even if tolerances occur in the vertical direction, left and right direction, or forward and backward directions, according to the configuration of the link bus bar 200 as described above, it is possible to adaptively respond to these tolerances. there is. Moreover, in the case of the above implementation configuration, it can be said that the tolerance response ability is superior to that of a flexible flat cable, etc., which has flexibility only in a specific direction.

The energy storage system according to the present invention includes the battery system according to the present invention described above. In particular, the battery system according to the present invention has been described focusing on two battery containers 100, but three or more battery containers 100 may be included. Accordingly, the energy storage system according to the present invention may include a battery system including two or more battery containers 100. Additionally, the energy storage system according to the present invention may further include a control container for controlling various operations, such as charging and discharging operations of the battery system, in addition to the battery system. In addition, the energy storage system according to the present invention may further include a fire-fighting device for responding to fire in the battery system. For example, the firefighting device may be a watering unit configured to supply water into the interior of the battery container 100 when a fire occurs in a specific battery container 100.

Meanwhile, in this specification, terms indicating directions such as up, down, left, right, front, and back may be used, but these terms are only for convenience of explanation, and may vary depending on the location of the target object or the location of the observer, etc. It is obvious to those skilled in the art that changes may occur. Additionally, in this specification, the terms inner and outer are used. Unless otherwise specified, for each component, the inner direction refers to the direction toward the center, and the outer direction refers to the opposite direction. there is.

As described above, although the present invention has been described with limited examples and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following will be understood by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalence of the patent claims to be described.

100: Battery container
110: battery module, 120: container housing, 130: container terminal
200: Link bus bar
210: connecting part, 220: cable
300: protective cover
310: mounting member, 320: cover member, 330: loop member
410: upper terminal cover
420: Side terminal cover

Claims (14)

Two battery containers including one or more battery modules, a container housing for storing the battery modules in an internal space, and a container terminal located on at least one side of the container housing and configured to be electrically connected to the outside;
A link bus bar whose both ends are connected to container terminals of different battery containers to electrically connect two battery containers; and
A protective cover including two mounting members each mounted on the outside of the two battery containers connected by the link bus bars, and a cover member coupled to the two mounting members and configured to surround the link bus bars in a flexible state.
A battery system comprising: According to paragraph 1,
A battery system, wherein the mounting member is formed in a ring shape, and the cover member is formed in a tube shape. According to paragraph 1,
The cover member is a battery system characterized in that it is configured to have flexibility in the horizontal and vertical directions. According to paragraph 1,
The cover member is a battery system characterized in that it is configured in the form of a sheet that is bent and both ends are fixed. According to paragraph 1,
The battery system, characterized in that the cover member is configured in the form of fabric. According to paragraph 1,
The cover member is a battery system characterized in that it is configured in the form of a corrugated tube. According to paragraph 1,
The protective cover is a battery system characterized in that it further includes a loop member disposed on an upper part of the cover member. According to paragraph 1,
The battery system is characterized in that the container housing has a concave terminal receiving portion formed on at least one side, and the container terminal is located in the terminal receiving portion of the container housing. According to clause 8,
The battery system, wherein the terminal accommodating portion is formed at an upper corner of the container housing to be open in the upper and side directions. According to clause 9,
The battery system further comprises at least one of an upper terminal cover that closes the upper portion of the terminal accommodating portion, and a side terminal cover that closes a side portion of the terminal accommodating portion. According to paragraph 1,
The battery system, wherein at least a portion of the mounting member is configured to be inserted into the outside of the container housing. According to paragraph 1,
The link bus bar is a battery system characterized in that it is provided with a plurality of connecting parts coupled to the container terminal and a plurality of cables connecting the plurality of connecting parts. An energy storage system comprising a battery system according to any one of claims 1 to 12. In the protective cover for a battery system in which two battery containers are electrically connected to each other by a link busbar,
Two mounting members each mounted on the outside of the two battery containers connected by the link bus bar; and
A cover member coupled to the two mounting members and configured to surround the link bus bar in a flexible state.
A protective cover comprising:

Images