Battery system, energy storage system including the battery system, and protective cover used for the battery system.

Abstract

The present invention discloses a battery system that effectively protects an electrical connection configuration between battery containers and has excellent installation workability or tolerance compatibility. The battery system according to one aspect of the present invention includes a plurality of battery containers including one or more battery modules, a container housing that houses the battery modules in an internal space, and container terminals located on at least one side of the container housing and configured to be electrically connected to an outside, link bus bars each having an end connected to a container terminal of a different battery container to electrically connect the plurality of battery containers, and a protective cover coupled to the container housing of the plurality of battery containers electrically connected by the link bus bar and configured to surround the link bus bar in a space between the plurality of battery containers.

Description

Technical Field

[0001] This application claims priority based on Korean Patent Application No. 10-2022-0055751 filed on May 4, 2022, and Korean Patent Application No. 10-2022-0078336 filed on June 27, 2022, and all the contents disclosed in the specifications and drawings of the applications are incorporated into this application.

[0002] The present invention relates to a battery, and more particularly, to a connection configuration between battery containers in a battery system including a plurality of battery containers.

Background Art

[0003] In recent years, with issues such as power shortages and environmentally friendly energy being taken up, energy storage systems (ESS) for storing the generated power have been attracting more attention. Typically, by using such an ESS, it is easy to construct a power management system such as a smart grid system, so that the power supply and demand can be easily adjusted in a specific region or city. In addition, as the commercialization of electric vehicles becomes full-fledged, such an ESS can also be applied to electric charging stations for charging electric vehicles.

[0004] The ESS can be configured in various forms, but typically, it can be configured in a form including one or more battery containers. At this time, the battery containers may include a plurality of battery modules connected in series and / or in parallel to each other. Here, the plurality of battery modules can be housed inside the battery containers via a rack frame or a separate fixing structure.

[0005] Furthermore, because ESSs handle very large amounts of electricity, they are often configured in a way that includes numerous battery containers. In this configuration, the battery containers are electrically connected to each other via busbars, forming a battery system. In this configuration, the battery cells and battery modules are located inside the battery containers and are therefore protected from the external environment, such as water, wind, and insects. However, the configuration that connects the battery containers to each other, especially the busbar, is located outside the battery containers and is therefore exposed to such external environments and is susceptible to their effects.

[0006] Furthermore, conventional technology presents a problem in that electrically connecting battery containers is not easy. Additionally, in battery systems or energy storage systems containing multiple battery containers, many battery containers are placed in a confined space to increase energy density. Therefore, the quality of the battery system or energy storage system can vary depending on the skill level and effort of the workers.

[0007] Furthermore, battery containers are typically heavy and much larger in volume than typical battery packs. Consequently, once a battery container is placed in a specific location, it is difficult to change its position. This makes it easy for tolerances exceeding a certain level to occur in the space for electrical connections between battery containers. [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] The present invention was devised to solve the above-mentioned problems, and aims to provide a battery system and energy storage system, as well as protective covers used therein, that effectively protect the electrical connection configuration between battery containers and have excellent ease of installation and tolerance handling capabilities.

[0009] The technical problems that this invention aims to solve are not limited to those described above, and other problems will be clearly understood by those skilled in the art from the following description of the invention. [Means for solving the problem]

[0010] To achieve the above objectives, a battery system according to one aspect of the present invention includes: a plurality of battery containers each having one or more battery modules, a container housing that houses the battery modules in an internal space, and container terminals located on at least one side of the container housing and configured to be electrically connected to the outside; a link bus bar whose respective ends are connected to the container terminals of different battery containers to electrically connect the plurality of battery containers together; and a protective cover coupled to the container housings of the plurality of battery containers electrically connected by the link bus bar and configured to surround the link bus bar in the space between the plurality of battery containers together.

[0011] Here, the protective cover may be configured to be detachably attached to the outer surface of the container housing.

[0012] Furthermore, the protective cover may comprise a plurality of unit covers configured to be separable and connectable to one another.

[0013] Furthermore, the multiple unit covers may include a bottom cover configured to protect the lower and side portions of the link busbar, and a top cover configured to protect the upper portion of the link busbar.

[0014] Furthermore, the plurality of unit covers may further include guide covers configured to be coupled to the outside of the container housing so that at least one of the bottom cover and the top cover can be placed on them.

[0015] Furthermore, the bottom cover may include a first bottom cover configured to protect the front and lower parts of the link busbar, and a second bottom cover configured to protect the rear and lower parts of the link busbar.

[0016] Furthermore, the protective cover may include two mounting members attached to the outside of the two battery containers connected by the link busbar, and a cover member connected to the two mounting members and configured to surround the link busbar in a flexible manner.

[0017] Furthermore, the mounting member may be formed in a ring shape, and the cover member may be formed in a tubular shape.

[0018] Furthermore, the cover member may be configured to be flexible in both the horizontal and vertical directions.

[0019] Furthermore, the cover member may be constructed in the form of a sheet that is rolled up and has both ends fixed.

[0020] Furthermore, the cover member may be constructed in the form of a woven fabric.

[0021] Furthermore, the cover member may be configured in a corrugated tubular shape.

[0022] Furthermore, the protective cover may further include a roof member positioned on top of the cover member.

[0023] Furthermore, the mounting member may be configured such that at least a portion of it is inserted outside the container housing.

[0024] Furthermore, an energy storage system according to another aspect of the present invention includes a battery system according to one aspect of the present invention.

[0025] Further, a protective cover according to another aspect of the present invention is a protective cover for a battery system in which a plurality of battery containers are electrically connected by a link bus bar, and includes a bottom cover configured to protect the lower and side portions of the link bus bar, and a top cover configured to protect the upper portion of the link bus bar.

[0026] Further, a 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 by a link bus bar, and includes two attachment members respectively attached to the outside of the two battery containers connected by the link bus bar, and a cover member coupled to the two attachment members and configured to surround the link bus bar in a flexible state.

Advantages of the Invention

[0027] According to one aspect of the present invention, a portion electrically connected between battery containers can be effectively protected from external environmental factors such as water, wind, dust, insects, etc.

[0028] Also, according to one aspect of the present invention, the workability with respect to the electrical connection configuration between battery containers can be improved.

[0029] Also, 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 adaptively cope with such a tolerance.

[0030] In addition, according to many embodiments of the present invention, various other additional effects can be achieved. Such various effects of the present invention will be described in detail in each embodiment, but effects that are easily understood by those skilled in the art will be omitted from the description.

[0031] The following drawings accompanying this specification illustrate preferred embodiments of the invention and, together with the detailed description of the invention, serve to further illustrate the technical idea of ​​the invention; therefore, the invention should not be construed as being limited solely to what is shown in the drawings. [Brief explanation of the drawing]

[0032] [Figure 1] This is a schematic front view showing the configuration of a battery system according to one embodiment of the present invention. [Figure 2] This is a schematic top view showing the configuration of a battery system according to one embodiment of the present invention. [Figure 3] This is a partially enlarged view schematically showing a part of the configuration of a battery system according to one embodiment of the present invention. [Figure 4] This is a partially enlarged view showing a separated portion of a battery system according to one embodiment of the present invention. [Figure 5] This is an exploded perspective view schematically showing some components of a battery system according to one embodiment of the present invention. [Figure 6] This is an exploded perspective view illustrating the configuration of a protective cover according to one embodiment of the present invention. [Figure 7] This is a perspective view showing the configuration of a guide cover included in a protective cover according to one embodiment of the present invention. [Figure 8] This figure shows part of the process of attaching a protective cover to a battery system according to one embodiment of the present invention. [Figure 9] This figure shows part of the process of attaching a protective cover to a battery system according to one embodiment of the present invention. [Figure 10] This is an exploded perspective view illustrating the configuration of the bottom cover included in the protective cover according to one embodiment of the present invention. [Figure 11] This is a schematic perspective view showing the configuration of the top cover included in the protective cover according to one embodiment of the present invention. [Figure 12]This is a schematic perspective view showing a portion of the battery system according to one embodiment of the present invention. [Figure 13] This is an exploded perspective view schematically showing some components of a battery system according to another embodiment of the present invention. [Figure 14] Figure 13 is a combined perspective view of the configuration. [Figure 15] This figure schematically shows a partial configuration of a battery system according to yet another embodiment of the present invention. [Figure 16] This is an exploded perspective view schematically showing the configuration of a protective cover included in a battery system according to yet another embodiment of the present invention. [Figure 17] This is an exploded perspective view schematically showing the configuration of a protective cover included in a battery system according to yet another embodiment of the present invention. [Figure 18] This is a schematic top view showing the configuration of a battery system according to one embodiment of the present invention. [Figure 19] This is a partially enlarged view schematically showing a part of the configuration of a battery system according to one embodiment of the present invention. [Figure 20] This is a schematic perspective view showing the configuration of a protective cover according to one embodiment of the present invention. [Figure 21] This figure shows various morphological changes of a protective cover according to one embodiment of the present invention. [Figure 22] This figure shows various morphological changes of a protective cover according to one embodiment of the present invention. [Figure 23] This figure shows various morphological changes of a protective cover according to one embodiment of the present invention. [Figure 24] This is a schematic cross-sectional view showing the configuration of a protective cover according to one embodiment of the present invention. [Figure 25] This is a schematic perspective view showing the configuration of a protective cover according to another embodiment of the present invention. [Figure 26] This figure schematically shows a partial configuration of a battery system according to yet another embodiment of the present invention. [Figure 27]This figure schematically shows a partial configuration of a battery system according to yet another embodiment of the present invention. [Figure 28] This is an exploded perspective view schematically showing some components of a battery system according to yet another embodiment of the present invention. [Figure 29] This is an exploded perspective view schematically showing some components of a battery system according to yet another embodiment of the present invention. [Figure 30] This is an exploded perspective view schematically showing some components of a battery system according to yet another embodiment of the present invention. [Figure 31] This diagram schematically shows the configuration of a link busbar according to one embodiment of the present invention. [Modes for carrying out the invention]

[0033] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and in the claims shall not be interpreted in their usual and dictionary sense, but in accordance with the principle that inventors can appropriately define the concepts of terms in order to best describe their invention, and shall be interpreted in a sense and concept that corresponds to the technical idea of ​​the present invention.

[0034] Therefore, the embodiments described herein and the configurations shown in the drawings represent only one of the most preferred embodiments of the present invention and do not represent the entire technical concept of the invention. It should be understood that there are various equivalents and modifications that can be substituted for these at the time of filing this application.

[0035] In the various embodiments described herein, detailed descriptions of parts where the descriptions of other embodiments are identical or similarly applicable will be omitted, and the differences will be described primarily.

[0036] Figure 1 is a schematic front view showing the configuration of a battery system according to one embodiment of the present invention, and Figure 2 is a schematic top view showing the configuration of a battery system according to one embodiment of the present invention. Figure 3 is a schematic enlarged partial view showing a part of the configuration of a battery system according to one embodiment of the present invention, and Figure 4 is an enlarged partial view showing a separated part of the configuration of a battery system according to one embodiment of the present invention. In particular, Figures 3 and 4 are enlarged versions of the A1 portion of Figure 1. Also, in Figures 1 and 2, for the sake of explanation, parts are partially removed or cut out, or shown in a transparent form.

[0037] Referring to Figure 1 or Figure 4, a battery system according to one embodiment of the present invention includes a battery container 100, a link bus bar 200, and a protective cover 300.

[0038] The battery container 100 comprises a battery module 110, a container housing 120, and a container terminal 130.

[0039] Here, the battery module 110 is configured to store and release power by housing multiple battery cells (secondary batteries) in a module case, and may consist of one or more modules. In particular, as shown by the dotted line in Figure 1, multiple battery modules 110 may be provided inside the battery container 100, in which case the multiple battery modules 110 may be electrically connected in series and / or parallel. Furthermore, to facilitate the arrangement or stacking of multiple battery modules 110, the battery container 100 may include a rack frame. The rack frame can house multiple battery modules 110 stacked horizontally and / or vertically. The battery container 100 according to the present invention can employ a variety of battery modules 110 known at the time of filing the present invention. Since the specific configuration of the battery module 110 is publicly known at the time of filing the present invention, a detailed explanation is omitted.

[0040] The container housing 120 may be configured to house the battery modules 110 in its internal space. In particular, the container housing 120 may be formed in a substantially rectangular parallelepiped shape with an open space inside, and may house multiple battery modules 110 in its internal space. Furthermore, the container housing 120 may contain or include rack frames, bulkhead structures, etc., capable of housing multiple battery modules 110. The container housing 120 may be made of a metallic material such as steel, but the present invention is not limited to such a specific material for the container housing 120.

[0041] 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, as shown in Figure 4 and other figures. For example, the container terminal 130 may be configured to be connected to other battery containers 100. In particular, the container terminal 130 may be configured to carry the main DC power, which is the charging and discharging power to the battery container 100. In this case, the container terminal 130 can be said to be a main DC power terminal. The container terminal 130 may have two types of terminals, namely a container positive terminal and a container negative terminal, as shown in Figure 4 and other figures, to carry the charging and discharging power.

[0042] The container terminals 130 can be provided on multiple sides of the container housing 120. For example, as shown in Figure 2, the container terminals 130 can be provided on the left and right sides of a single container housing 120. In this case, within a single battery container 100, a main power line can be connected between the container terminal 130 on the left side and the container terminal 130 on the right side. Such a main power line can provide a path for transmitting power not only from the battery container 100 in question but also from other battery containers 100. In particular, multiple battery containers 100 can be electrically connected in parallel with each other, in which case the main power line of each battery container 100 can transmit power from other battery containers 100.

[0043] Multiple battery containers 100 may be included in the battery system. For example, as shown in Figure 1 or Figure 4, the battery system may include at least two battery containers 100.

[0044] The link busbar 200 has multiple ends, each of which can be connected to a container terminal 130 of different battery containers 100. Therefore, the link busbar 200 can be configured to extend long in at least one direction. For example, the link busbar 200 can be configured to extend long in the left-right direction, with both ends connected to container terminals 130 of different battery containers 100. More specifically, in a battery system including a left container 100L and a right container 100R, the link busbar 200 may have its left end connected to the container terminal 130 of the left container 100L and its right end connected to the container terminal 130 of the right container 100R.

[0045] The link busbar 200 can be connected to the container terminals 130 of different battery containers 100 in this way, thereby electrically connecting multiple battery containers 100 together. For example, in the embodiment shown in Figure 1 or Figure 4, the link busbar 200 can electrically connect two battery containers 100, that is, the left container 100L and the right container 100R. In particular, the link busbar 200 can transmit DC power, in other words, the charging and discharging power of the battery system, between different battery containers 100.

[0046] The protective cover 300 may be configured to be coupled to the container housing 120 of the battery container 100. In particular, the protective cover 300 may be coupled to the container housings 120 of multiple battery containers 100 that are electrically connected by a link bus bar 200. For example, as shown in Figures 3 and 4, if two battery containers 100, namely the left container 100L and the right container 100R, are connected by a link bus bar 200, the protective cover 300 may be coupled to the container housing 120 of the left container 100L and the container housing 120 of the right container 100R.

[0047] Furthermore, the protective cover 300 may be configured to surround the link busbar 200 in the space between the multiple battery containers 100 connected by the link busbar 200. For example, in the embodiments shown in Figures 3 and 4, the protective cover 300 may be located in the empty space between the left container 100L and the right container 100R. Such a protective cover 300 may surround the link busbar 200 in the space between the left container 100L and the right container 100R. In particular, the protective cover 300 may be configured to cover the link busbar 200 above, below, in front of, and behind in the space between the two battery containers 100.

[0048] According to this embodiment of the present invention, the link busbar 200 can be prevented from being exposed to the outside in the space between the two battery containers 100. Therefore, the electrical connection configuration between the battery containers 100 can be protected more stably. In particular, in the case of systems such as ESS, which are often placed outdoors, this embodiment allows for the safe protection of the electrical connection configuration of the battery containers 100 from many external factors. For example, the link busbar 200 of the present invention can be safely protected from many external climatic and animal factors such as water, wind, heat, dust, insects, and birds.

[0049] The protective cover 300 may be configured to be detachably attached to the outer surface of the container housing 120. This will be explained in more detail with reference to Figure 5.

[0050] Figure 5 is an exploded perspective view schematically showing a partial configuration of a battery system according to one embodiment of the present invention. For ease of explanation, only one battery container 100 is shown in Figure 5.

[0051] Referring to Figure 5, in a battery system according to one embodiment of the present invention, the protective cover 300 may be configured to be attachable to and detachable from the left side of the container housing 120. More specifically, the right side of the protective cover 300 may be coupled to the left side of the container housing 120 of the right-side container 100R. In this case, the protective cover 300 and the container housing 120 may be fastened and fixed together using a bolt connection method. The protective cover 300, thus coupled to the container housing 120, can then be separated from the container housing 120 by releasing the bolt fastening. Although not shown in Figure 5, the left side of the protective cover 300 may also be coupled to the right side of another container, namely the left-side container 100L.

[0052] According to this embodiment of the present invention, the battery system can be constructed more easily. In particular, according to this embodiment, the protective cover 300 can be attached after the battery container 100 has been moved to a predetermined position. Therefore, since the battery container 100 is moved without the protective cover 300 attached, it is possible to prevent the protective cover 300 from being damaged or hindering the movement of the battery container 100 during the movement of the battery container 100. In addition, by attaching the protective cover 300 when the battery container 100 is in a fixed position, tolerances arising from the placement position of the battery container 100 can be appropriately addressed. Moreover, according to this embodiment, since the protective cover 300 can be attached after the link busbar 200 has been connected, the fastening of the link busbar 200 and the configuration of the link system can be made easier.

[0053] Figure 6 is an exploded perspective view schematically showing the configuration of the protective cover 300 according to one embodiment of the present invention.

[0054] Referring to Figure 6, the protective cover 300 may comprise a plurality of unit covers. In this case, the plurality of unit covers may be configured to be separable and connectable to one another. In particular, the protective cover 300 may be manufactured with each unit cover separated from the others, and then the unit covers may be connected to each other during the process of attachment to the container housing 120. In this case, the connection of the plurality of unit covers may be carried out by a method such as bolting. Therefore, at least some of the plurality of unit covers may have fastening holes or the like for bolting them together. In addition, the plurality of unit covers may have features such as protrusions or grooves for insertion fastening between them.

[0055] According to this embodiment of the present invention, the protective cover 300 is separated into many unit covers, making it easier to handle and install the protective cover 300. Furthermore, according to this embodiment, the link bus bar 200 can be protected more comprehensively.

[0056] Furthermore, the protective cover 300 according to the present invention may include a bottom cover (310) and a top cover 320 as multiple unit covers, as shown in Figure 6.

[0057] Here, the bottom cover 310 may be configured to protect the lower and side portions of the link bus bar 200. To that end, the bottom cover 310 may have multiple plate-like portions to easily form a space inside for housing the link bus bar 200 and to improve connectivity. More specifically, the bottom cover 310 may have a lower plate to cover the lower portion of the link bus bar 200 and side plates to cover the side portions of the link bus bar 200.

[0058] Furthermore, the top cover 320 may be configured to protect the upper part of the link bus bar 200. For this purpose, the top cover 320 may include a plate-shaped portion, i.e., an upper plate, to cover the upper part of the link bus bar 200.

[0059] According to this embodiment of the present invention, the exposed portion of the link busbar 200 between two battery containers 100 can be easily covered. In particular, the link busbar 200 connected between two battery containers 100 arranged in the left-right direction has its upper, lower, front, and rear exposed in the space between the two battery containers 100. However, in this embodiment, the bottom cover 310 and the top cover 320 cover and protect the exposed portion of the link busbar 200, i.e., the upper, lower, front, and rear. Furthermore, according to this embodiment, the bottom cover 310 and the top cover 320 can be fastened together with the link busbar 200 connected between the two battery containers 100, so the link busbar 200 and the protective cover 300 can be easily assembled.

[0060] Furthermore, the multiple unit covers constituting the protective cover 300 may further include a guide cover 330, as shown in Figure 6. The configuration of such a guide cover 330 will be described in more detail with reference to Figure 7 or Figure 9.

[0061] Figure 7 is a perspective view showing the configuration of a guide cover 330 included in a protective cover 300 according to one embodiment of the present invention. Figures 8 and 9 are diagrams showing some of the steps involved in the configuration of attaching the protective cover 300 to a battery system according to one embodiment of the present invention.

[0062] First, referring to Figures 7 and 8, the guide cover 330 may be coupled to the outside of the container housing 120. Here, the guide cover 330 may be bolted to the container housing 120. In this case, coupling holes for bolting between the guide cover 330 and the container housing 120 may be formed in each.

[0063] Furthermore, as shown in Figure 7, the guide cover 330 is configured in a C-shape and can be connected to the lower and side portions (front and rear portions) of the container housing 120 where the container terminals 130 are located. More specifically, the guide cover 330 may include a horizontal guide portion 331 and a vertical guide portion 332. Here, the horizontal guide portion 331 is located below the container terminals 130 in the container housing 120, and the vertical guide portions 332 may be located in front of and behind the container terminals 130.

[0064] The protective cover 300, located between two battery containers 100, may include two guide covers 330, as it is attached to each of the two battery containers 100. For example, referring to the configuration shown in Figure 8, two guide covers 330 may be included as unit covers to constitute one protective cover 300. In this case, one guide cover 330 may be attached to the right side of the left container 100L, and the other guide cover 330 may be attached to the left side of the right container 100R.

[0065] The guide cover 330 may be configured to support at least one of the bottom cover 310 and the top cover 320. That is, the guide cover 330 may be configured to support either the bottom cover 310 or the top cover 320 while being coupled to the outside of the container housing 120. Referring to the configuration shown in Figure 9 as a more specific embodiment, the bottom cover 310 may be placed on two guide covers 330 coupled to the left container 100L and the right container 100R. In particular, the left side of the bottom cover 310 may be placed on the left guide cover 330, and the right side of the bottom cover 310 may be placed on the right guide cover 330.

[0066] In this case, the guide cover 330 may have a portion on which the bottom cover 310 is placed. For example, referring to the embodiment in Figure 7, the horizontal guide portion 331 and the vertical guide portion 332 of the guide cover 330 each have flattened portions in the horizontal and vertical directions. At least a part of the bottom cover 310 can be placed on these flattened portions of the horizontal guide portion 331 and the vertical guide portion 332. In particular, by being placed on the guide cover 330, the bottom cover 310 is supported at its lower and side portions from above, forward, and rear.

[0067] Here, the guide cover 330 can be bolted to the bottom cover 310. Therefore, fastening holes for bolting to the bottom cover 310 may be formed in the guide cover 330. For example, as shown in the embodiment of Figure 7, fastening holes may be formed in the horizontal guide portion 331 of the guide cover 330 as shown in the portion indicated by H1. Also, fastening holes may be formed in the vertical guide portion 332 of the guide cover 330 as shown in the portion indicated by H2. These fastening holes H1 and H2 can then be used for bolting to the bottom cover 310.

[0068] According to this embodiment of the present invention, the battery system can be assembled more easily. In particular, in this embodiment, the installation of the protective cover 300 to the outside of the battery container 100 can be easily performed. Furthermore, in this embodiment, the process of coupling the guide cover 330 to the container housing 120 can be performed regardless of the timing, whether before or after moving the battery container 100, or before or after connecting the link bus bar 200. In particular, the guide cover 330 can be pre-attached to the outer surface of the container housing 120 before the two battery containers 100 are installed adjacent to each other. Also, although the bottom cover 310 has a larger surface area than the guide cover 330 and is therefore not easy to handle and install, according to this embodiment, the bottom cover 310 only needs to be placed on or coupled to the guide cover 330, and there is no need to directly couple it to the container housing 120. Therefore, the structure of the bottom cover 310 is not complex and is simple.

[0069] The bottom cover 310 may include two unit bottom covers 310. This will be explained in more detail with further reference to Figure 10.

[0070] Figure 10 is an exploded perspective view schematically showing the configuration of the bottom cover 310 included in the protective cover 300 according to one embodiment of the present invention.

[0071] Referring to Figure 10, the bottom cover 310 may include a first bottom cover 311 and a second bottom cover 312. Here, the first bottom cover 311 may be configured to protect the front (-Y axis direction in the drawing) and bottom of the link bus bar 200. The second bottom cover 312 may be configured to protect the rear (+Y axis direction in the drawing) and bottom of the link bus bar 200.

[0072] More specifically, the first bottom cover 311 and the second bottom cover 312 may be constructed in the shape of a folded plate, as shown in Figure 10. That is, the first bottom cover 311 and the second bottom cover 312 may have a side portion 310a and a base portion 310b centered on the bent portion. Here, the side portion 310a of the first bottom cover 311 is located in front of the link bus bar 200 and can cover the front of the link bus bar 200. The side portion 310a of the second bottom cover 312 is located behind the link bus bar 200 and can cover the rear of the link bus bar 200. In addition, the base portion 310b of the first bottom cover 311 and the base portion 310b of the second bottom cover 312 may be configured to overlap at least a portion. In this case, airtightness is improved, and the penetration of foreign matter and other external substances from the space between the base portions 310b of the two bottom covers 310 can be prevented more effectively. Thus, the first bottom cover 311 and the second bottom cover 312 may have similar shapes when folded and be configured to be symmetrical with respect to each other in the front-to-back direction.

[0073] According to this embodiment of the present invention, the bottom cover 310 can be assembled more easily. In particular, according to this embodiment, even when the link bus bar 200 is assembled to the container terminal 130, the process of placing the bottom cover 310 on the guide cover 330 can be carried out smoothly. Furthermore, according to this embodiment, tolerances that may occur during the installation process of the battery system can be appropriately dealt with. In particular, according to this embodiment, changes in the length of the battery system in the front-to-back direction (Y-axis direction) can be effectively dealt with.

[0074] On the other hand, the bottom cover 310 may have a configuration for fastening to the guide cover 330, such as bolt fastening holes. For example, the first bottom cover 311 and the second bottom cover 312 may have fastening holes formed in the base portion 310b and the side portion 310a, as shown by H3 and H4 in Figure 10. Such fastening holes H3 and H4 of the bottom cover 310 may be configured to communicate with fastening holes H1 and H2 of the guide cover 330 shown in the embodiment of Figure 7 when the bottom cover 310 is placed on the guide cover 330. Then, the bottom cover 310 and the guide cover 330 can be fastened and fixed together by bolts passing through both the fastening holes H3 and H4 of the bottom cover 310 and the fastening holes H1 and H2 of the guide cover 330.

[0075] Figure 11 is a schematic perspective view showing the configuration of the top cover 320 included in the protective cover 300 according to one embodiment of the present invention.

[0076] Referring to Figure 11, the top cover 320 may be configured to form an internal space together with the bottom cover 310 and cover the upper part of the link bus bar 200 located in the internal space. The top cover 320 may be formed in a substantially plate shape. Furthermore, the top cover 320 may have a bent portion, as shown by C1 in Figure 11. Such a bent portion C1 may be configured to cover the upper end of the side portion 310a of the bottom cover 310, as shown in Figure 3 and other figures. In particular, the top cover 320 may have bent portions formed at both ends so as to cover the outer surfaces of the upper ends of the side portions 310a of the first bottom cover 311 and the second bottom cover 312.

[0077] According to this embodiment of the present invention, the sealing force between the top cover 320 and the bottom cover 310 can be improved. Therefore, the protective performance of the link bus bar 200 by the top cover 320 and the bottom cover 310 can be further enhanced.

[0078] Figure 12 is a schematic perspective view showing a partial configuration of a battery system according to one embodiment of the present invention. More specifically, only the battery container 100 is shown in Figure 12.

[0079] Referring to Figure 12, in the battery system according to the present invention, a terminal housing portion may be formed in the container housing 120 of the battery container 100, as shown by the portion D1. Such a terminal housing portion D1 may be formed in a form that is recessed inward from at least one side of the container housing 120. The container terminal 130 may be located in the terminal housing portion D1 of the container housing 120. That is, the container terminal 130 is provided in a form that is exposed to the outside of the container housing 120, and may be provided particularly outside the recessed portion of the container housing 120.

[0080] According to this embodiment of the present invention, a protective structure for the container terminal 130 and the link busbar 200 connected to the container terminal 130 can be more easily achieved. That is, since the container terminal 130 is located in a recessed portion such as the terminal housing portion D1 in the container housing 120, the container terminal 130 can be easily protected by covering only the open portion of the recessed area.

[0081] In particular, the terminal housing portion D1 may be located at the upper edge of the container housing 120. For example, in the embodiment shown in Figure 12, the terminal housing portion D1 of the left container 100L may be located at the upper right edge of the container housing 120. Also, in the embodiment shown in Figure 12, the terminal housing portion D1 of the right container 100R may be located at the upper left edge of the container housing 120.

[0082] In particular, the terminal housing portion D1 may be formed so that the container terminals 130 are exposed upward and to the side. Here, "to the side" may refer to the side of the adjacent battery container 100. For example, in the embodiment shown in Figure 12, the terminal housing portion D1 of the left container 100L may be configured to open upward and to the right. Therefore, the container terminals 130 of the left container 100L may be exposed upward and to the right. Similarly, the terminal housing portion D1 of the right container 100R may be configured to open upward and to the left. Therefore, the container terminals 130 of the right container 100R may be exposed upward and to the left.

[0083] According to this embodiment of the present invention, the battery system can be constructed more easily. For example, as shown in Figure 12, when two battery containers 100 are arranged adjacent to each other in the left-right direction, the terminals 130 of each container can be exposed above and to the side of the adjacent portion. Therefore, workers can more easily connect or disconnect the link busbars 200 and protective covers 300 to the exposed container terminals 130. In particular, according to this embodiment, the installation and replacement of the link busbars 200 can be performed more smoothly.

[0084] Figure 13 is an exploded perspective view schematically showing a partial configuration of a battery system according to another embodiment of the present invention, and Figure 14 is a combined perspective view of the configuration shown in Figure 13.

[0085] Referring to Figures 13 and 14, the battery system according to the present invention may further include a top terminal cover 410 and / or a side terminal cover 420. The top terminal cover 410 may be configured to close the upper part of the terminal housing D1. That is, the top terminal cover 410 may be configured to cover the upper part of the open portion of the terminal housing D1. The side terminal cover 420 may be configured to close the side of the terminal housing D1. For example, in the embodiments of Figures 13 and 14, the side terminal cover 420 may be configured to cover the left side of the open portion of the terminal housing D1.

[0086] According to such embodiments of the present invention, the terminal housing and / or link busbar 200 can be protected in a variety of situations, such as before or after the construction of the battery system, and before or after the link busbar 200 of the battery container 100 is connected. In particular, the top terminal cover 410 can seal the upper end of the open portion of the terminal housing D1 even after the construction of the battery system, and even when the protective cover 300 is coupled to the battery container 100, as shown in Figures 3 and 5. However, the top terminal cover 410 can be temporarily separated during the construction of the battery system. In particular, the top terminal cover 410 can be removed during the process of connecting the link busbar 200 to the container terminal 130. After the link busbar 200 coupling process is completed, the top terminal cover 410 can be coupled to close the upper end of the open portion of the terminal housing D1.

[0087] On the other hand, the side terminal cover 420 is not connected to the terminal housing D1 when the battery system is assembled, but can be connected to the terminal housing D1 when the battery system is not assembled, for example, when the battery container 100 is in transit. Alternatively, the side terminal cover 420 can be connected to a terminal housing D1 provided in a part that is not connected to other battery containers 100, even when the battery system is assembled. For example, in a plurality of battery containers 100 arranged and connected in the left-right direction, both the top terminal cover 410 and the side terminal cover 420 can be connected to the terminal housing D1 provided on the upper right edge of the rightmost battery container 100. On the other hand, the terminal housing D1 provided on the upper left edge of the rightmost battery container 100 is connected to another battery container 100 located to the left, so only the top terminal cover 410 can be connected, and the side terminal cover 420 does not need to be connected. In particular, the part of the container housing 120 to which the side terminal cover 420 is attached may be the part to which the protective cover 300 is attached. Therefore, it can be said that the side terminal cover 420 cannot be installed when the protective cover 300 is installed.

[0088] Figure 15 is a schematic diagram showing a partial configuration of a battery system according to yet another embodiment of the present invention.

[0089] Referring to Figure 15, the battery system according to the present invention includes a top terminal cover 410 and a side terminal cover 420, similar to the embodiments in Figures 13 and 14, wherein the top terminal cover 410 and / or the side terminal cover 420 may be configured to slide relative to the container housing 120.

[0090] More specifically, the top terminal cover 410 is attached to the top surface of the container housing 120, but can be configured to slide in the left-right direction (X-axis direction), as shown by arrow E1 in Figure 15. The top terminal cover 410 can be configured to open and close the upper end of the opening of the terminal housing D1 through this sliding motion. For example, in the process of connecting the link bus bar 200 to the container terminal 130, the top terminal cover 410 slides in the +X-axis direction to open the top of the terminal housing D1, facilitating the operator's connection of the link bus bar 200. Once the connection is complete, the top terminal cover 410 can slide in the -X-axis direction to close the terminal housing D1.

[0091] Furthermore, the side terminal cover 420 is attached to the side of the container housing 120, and as shown by arrow E2 in Figure 15, it may be configured to slide vertically (in the Z-axis direction). The side terminal cover 420 may be configured to open and close the side of the open portion of the terminal housing D1 through such sliding motion. For example, during the 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 housing D1. After the transportation of the battery container 100 is completed, the side terminal cover 420 may slide in the -Z-axis direction to expose the side of the terminal housing D1, allowing the link busbar 200 to be connected and the protective cover 300 to be installed.

[0092] On the other hand, as shown by the part labeled F in Figure 15, the battery container 100 may further include a coupling reinforcement member. The coupling reinforcement member F may be located in the terminal housing portion D1 of the container housing 120. In particular, the coupling reinforcement member F may be formed in a form that extends long along the edge of the container housing 120. Furthermore, the coupling reinforcement member F may be located in the edge portion where the terminal housing portion D1 is formed, dividing the open portion of the terminal housing portion D1 into an upper and a lateral portion.

[0093] Such a 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 a portion of the protective cover 300 shown in Figure 3 or Figure 11, particularly the top cover 320, can be fastened and secured to the coupling reinforcement member F. In addition, the top terminal cover 410 and / or side terminal cover 420 shown in the embodiment of Figure 13 or Figure 15 can be fastened and secured to the coupling reinforcement member F. Furthermore, fastening holes can be formed in the coupling reinforcement member F for fastening and securing with such other components.

[0094] In the battery system according to the present invention, bolt fastening configurations can be applied between many components. In this case, fastening holes or coupling holes for bolt fastening can be formed larger than the size of the bolt. For example, the bottom cover 310 can be fastened and secured to the guide cover 330 by bolts passing through fastening holes, but in this case, the fastening holes in the bottom cover 310 can be configured to extend in one direction, for example in the front-to-back direction (Y-axis direction), so that the position of bolt penetration can be changed. As another example, the top cover 320 can be bolted to the coupling reinforcement member F, but the fastening holes in the top cover 320 can be formed to extend in one direction, for example in the left-to-right direction (X-axis direction).

[0095] According to this embodiment of the present invention, when constructing a battery system, even if the mounting position of the battery container 100 deviates slightly from the designed position, bolt fastening can be performed at the appropriate position through the elongated fastening holes. Therefore, tolerances can be effectively accommodated.

[0096] Figure 16 is an exploded perspective view schematically showing the configuration of a protective cover 300 included in a battery system according to yet another embodiment of the present invention.

[0097] Referring to Figure 16, the protective cover 300 may be configured to have a length that can be varied in at least one direction. For example, the protective cover 300 may be configured to have a variable length in the front-to-back direction (Y-axis direction). Therefore, many of the components included in the protective cover 300 may be configured to have variable lengths.

[0098] More specifically, the guide cover 330 may be configured so that its length changes in the direction of arrow G1 in Figure 16. In this case, the guide cover 330 may comprise two unit members, the two unit members of which may be configured to move along a connecting rail. The top cover 320 may also be configured so that its length changes in the direction of arrow G2 in Figure 16. In this case, the top cover 320 may be configured so that two plate-like members are connected to each other and can move in a sliding manner. The bottom cover 310 may also be configured so that the relative distance between the first bottom cover 311 and the second bottom cover 312 changes in the direction of arrow G3.

[0099] According to this embodiment of the present invention, tolerances can be addressed more effectively when constructing a battery system. In particular, when arranging two battery containers 100 in the left-right direction, the terminal housing D1 may not be able to face each other precisely, causing a shift in the front-rear direction (Y-axis direction) and resulting in an error. In this case, according to this embodiment, by adjusting the length of the protective cover 300 in the front-rear direction to address such errors, the protective cover 300 can be stably attached between the two battery containers 100.

[0100] Figure 17 is an exploded perspective view schematically showing the configuration of a protective cover 300 included in a battery system according to yet another embodiment of the present invention.

[0101] Referring to Figure 17, the protective cover 300 may be configured to have a variable length in the direction in which the battery containers 100 are stacked, i.e., in the left-right direction (X-axis direction). More specifically, the bottom cover 310, i.e., the first bottom cover 311 and the second bottom cover 312, may be configured to have a length (width) that changes in the left-right direction in the direction of arrow G4. In this case, the first bottom cover 311 and the second bottom cover 312 may each be configured to be slidable in the left-right direction with different plate-shaped members stacked facing each other. The top cover 320 may also be configured to have a width that changes in the direction of arrow G5 in Figure 17. In this case, the top cover 320 may change its width by sliding in the direction of arrow G5 with two plate-shaped members stacked facing each other.

[0102] According to this embodiment of the present invention, the shape of the protective cover 300 can be appropriately changed to correspond to the distance between different battery containers 100, that is, to the tolerance in the X-axis direction in which the battery containers 100 are arranged. Therefore, in this case, even if the fixing position of the battery container 100 changes, the protective cover 300 can be stably attached to the battery container 100 by changing the length (width) of the protective cover 300.

[0103] Figure 18 is a schematic top view showing the configuration of a battery system according to one embodiment of the present invention, and Figure 19 is a schematic enlarged partial view showing a part of the battery system according to one embodiment of the present invention. In particular, Figure 19 is an enlarged view showing a part of the A1' portion of Figure 18. Also, in Figure 18, for the sake of explanation, parts are partially removed or cut out or shown in a transparent form. Furthermore, Figure 20 is a schematic perspective view showing the configuration of a protective cover 300 according to one embodiment of the present invention.

[0104] Referring to Figures 18 to 20, the protective cover 300 may be configured to be attached to the container housing 120 of the battery container 100 to protect the link busbar 200. In particular, the protective cover 300 comprises a mounting member 340 and a cover member 350.

[0105] The mounting member 340 can be mounted on the outside of two battery containers 100 that are electrically connected by a link busbar 200. In particular, two mounting members 340 may be provided on a single protective cover 300, and the two mounting members 340 may be fixed to different battery containers 100. For example, as shown in Figure 18, a protective cover 300 may be provided in the space between two battery containers 100 that are adjacent to each other in the left-right direction. In this case, one mounting member 340 provided on the protective cover 300, i.e., the left mounting member 340L, may be attached to and fixed to the left container, and the other mounting member 340, i.e., the right mounting member 340R, may be attached to and fixed to the right container.

[0106] The mounting member 340 can be fastened and fixed to the container housing 120 of the battery container 100 using a bolt connection method. In this case, fastening holes may be formed in the mounting member 340, as shown by H11 in Figure 20. The bolts can then be inserted and fixed to the container housing 120 by passing through the fastening holes H11 of the mounting member 340. However, the present invention is not limited to this fastening method between the mounting member 340 and the container housing 120. That is, the mounting member 340 can be fixed to the container housing 120 in a variety of other ways. Furthermore, the mounting member 340 may be made of a material with high mechanical strength, such as metal, in order to ensure fastening strength with the container housing 120 while stably supporting the cover member 350. In addition, the cover member 350 may be made of a plastic material with higher strength than the cover member 350.

[0107] The cover member 350 can be joined and fixed to two mounting members 340 between them. For example, the left end of the cover member 350 can be joined and fixed to the left mounting member 340L, and the right end can be joined and fixed to the right mounting member 340R. In this case, the cover member 350 can be fixed to the mounting members 340 by various methods such as bolt fastening, hook fastening, or adhesive fastening.

[0108] The cover member 350 may be configured to surround the link bus bar 200 in a flexible manner. That is, the cover member 350 may be made of a flexible material or shape and be located outside the link bus bar 200. In particular, the cover member 350 may have an internal space, and by housing the link bus bar 200 in this internal space, the link bus bar 200 can be protected. Furthermore, between two mounting members 340 that are spaced apart in the left-right direction, the cover member 350 may be configured to cover the link bus bar 200 above, below, in front of, and behind.

[0109] According to this embodiment of the present invention, the electrical connection configuration between the battery containers 100 can be protected more stably. Furthermore, this embodiment offers excellent tolerance tolerance for the size of the space between the two battery containers 100. That is, a protective cover 300 is provided between the two battery containers 100, but the space between the two battery containers 100 can have various sizes. Moreover, even if the mounting position of each battery container 100 is determined during the process of constructing the battery system, the position of the battery containers 100 may be changed depending on the situation during the installation process. In this case, the size of the space between the battery containers 100 changes, but according to this embodiment, because the cover member 350 is flexible, the protective cover 300 is appropriately deformed and attached to the battery container 100, thereby stably performing the protective function of the link bus bar 200.

[0110] The protective cover 300 may be configured to be detachably attached to the outer surface of the container housing 120. For example, for two adjacent battery containers 100, two mounting members 340 may be configured to be attachable and detachable to the sides of each facing container housing 120. In this case, the mounting members 340 can be attached to and detached from the container housing 120 by inserting or separating bolts into fastening holes H11 while attached to the container housing 120. By attaching and detaching the mounting members 340, the protective cover 300 may be configured to surround the outside of the link bus bar 200.

[0111] As a more specific example, a link busbar 200 can be connected to the right container terminal 130 of the left container for two battery containers 100 arranged in a left-right direction, namely the left container and the right container. Then, with the cover member 350 surrounding the link busbar 200, the left mounting member 340L can be bolted around the right container terminal 130 of the left container. After the link busbar 200 is connected to the left container terminal 130 of the right container, the right mounting member 340R can be bolted around the left container terminal 130 of the right container.

[0112] Such embodiments make it easier to construct a battery system.

[0113] The mounting member 340 can be formed in a ring shape, as shown in Figure 20 and other figures. In particular, the mounting member 340 can be formed in a square ring shape. The cover member 350 can be formed in a tubular shape with a hollow interior. Furthermore, the cover member 350 can be formed in a square tubular shape. The cover member 350 and the two mounting members 340 can be connected such that the hollow interior of the cover member 350 communicates with the hollow interiors of the two mounting members 340. During the process of attaching the protective cover 300, at least a portion of the link bus bar 200 can pass through the hollow interiors of the cover member 350 and the mounting members 340.

[0114] According to this embodiment of the present invention, a configuration in which a protective cover 300 is positioned outside the link bus bar 200 to protect the link bus bar 200 can be easily achieved. Furthermore, according to this embodiment, the work of attaching the protective cover 300 to the container housing 120 becomes more convenient. In particular, by fixing the mounting member 340 to the container housing 120 with the link bus bar 200 passing through the hollow of the mounting member 340 and the cover member 350, the attachment of the protective cover 300 can be easily completed.

[0115] The cover member 350 may be configured to be flexible in the horizontal and vertical directions. This will be explained in more detail with reference to Figure 21 or Figure 23.

[0116] Figures 21 to 23 show various morphological changes of the protective cover 300 according to one embodiment of the present invention. Referring to Figures 21 to 23, the cover member 350 may be configured to change its shape when the relative positions of the two mounting members 340 change.

[0117] First, referring to the embodiment in Figure 21, the cover member 350 can be deformed by its flexibility even if the positions in the Y-axis direction of the two mounting members 340 differ. More specifically, the right mounting member 340R is positioned about B11 forward in the +Y-axis direction compared to the left mounting member 340L. In this case, the cover member 350 can be deformed by its flexibility even if there is a difference in the Y-axis position of both ends. Furthermore, this does not significantly affect the coupling of the cover member 350 to the mounting members 340 or the protective function of the link busbar 200 located in the internal space. Moreover, even if the position of the right mounting member 340R changes as indicated by arrow C11, the protective cover 300 can be deformed to adaptively cope with the change in position.

[0118] Next, referring to the embodiment in Figure 22, the cover member 350 can be deformed due to its flexibility even if the positions in the X-axis direction of the two mounting members 340 differ. That is, even if the right mounting member 340R moves in the X-axis direction as indicated by arrow C12, causing an error of approximately B12 from the design dimensions, the cover member 350 can be deformed to accommodate the error due to its flexibility.

[0119] Furthermore, referring to the embodiment in Figure 23, the cover member 350 can appropriately deform to accommodate differences in the vertical positions of the two mounting members 340, which are in the Z-axis direction. That is, even if the right mounting member 340R moves in the Z-axis direction as indicated by arrow C13, resulting in an error of approximately B13 from the design dimensions, the cover member 350 can stably connect to the mounting member 340 through deformation, thereby protecting the link busbar 200.

[0120] According to this embodiment, the flexibility of the cover member 350 allows the cover member 350 to be stably attached to the battery container 100 even under various conditions, particularly when there is some difference in the horizontal or vertical positions of the two battery containers 100 to which the protective cover 300 is attached.

[0121] The cover member 350 may be constructed in the form of a sheet that is rolled up and fixed at both ends. This will be explained in more detail with reference to Figure 24.

[0122] Figure 24 is a schematic cross-sectional view showing the configuration of a protective cover 300 according to one embodiment of the present invention. In particular, Figure 24 is a cross-sectional view along the line A2-A2' in Figure 20.

[0123] Referring to Figure 24, the cover member 350 may be constructed by rolling up a single sheet to form a hollow structure. The ends of the rolled sheet can then be joined together. That is, a flexible sheet member can be rolled up and joined together to form a tubular shape. At this time, the ends joined by rolling can overlap each other, as shown in the section A3. These overlapping sections can then be fixed together in various ways. In particular, the overlapping sections at both ends of the sheet member can be bonded together using an adhesive. These bonded sections at both ends, for example, the bonded sections, can extend for a long distance from one side to the other along the edge direction of the end, for example, along the X-axis.

[0124] Furthermore, the joint portions of the sheet members, especially the overlapping portions, may be located at the bottom of the cover member 350. For example, referring to the configuration shown in Figure 24, if the sheet member is rolled up to form a roughly rectangular tubular shape, it may have four edges: top, bottom, left side, and right side. In this case, the joint portion of the sheet member may be located at the bottom edge.

[0125] According to this embodiment of the present invention, the protective cover 300 can be manufactured in a relatively simple manner. Furthermore, according to this embodiment, the performance in preventing the penetration of foreign matter can be further improved. In particular, when the cover member 350 is manufactured in the manner described above, there is a risk that foreign matter such as water and dust may penetrate from the joint portion at the end of the sheet member. However, according to this embodiment, the possibility of such foreign matter penetration is very low, and furthermore, when it rains while the battery system according to the present invention is placed outdoors, it is possible to suppress rainwater from flowing in from the joint portion at the end of the sheet member, for example, the overlapping portion such as A3. In other words, according to this embodiment, the waterproof or dustproof performance of the protective cover 300 is further improved with a simple structure.

[0126] Furthermore, the cover member 350 may be constructed in a woven form. That is, the cover member 350 may be in the form of a sheet woven using fibers. After being manufactured in such a woven form, the cover member 350 may be wound up as described in Figure 24 to have a hollow structure. The cover member 350 may also be constructed to have waterproof properties. For example, the cover member 350 may be constructed in a form in which a waterproof layer is coated on one or both sides of a woven material base. For example, the cover member 350 may be made of a waterproof cloth material. As an example, the cover member 350 may include tarpaulin material.

[0127] According to this embodiment of the present invention, it is possible to realize a protective cover 300 that is easy to manufacture and lightweight. Furthermore, according to this embodiment, it is possible to provide a protective cover 300 that is highly flexible and can be easily deformed according to the position or environment in which the protective cover 300 is attached.

[0128] Figure 25 is a schematic perspective view showing the configuration of the protective cover 300 according to another embodiment of the present invention. In each embodiment included herein, including this embodiment, detailed descriptions of parts that are identical or similar to the descriptions of other embodiments will be omitted, and the differences will be described primarily.

[0129] Referring to Figure 25, the cover member 350 may be configured in a corrugated tubular shape. For example, the cover member 350 may be configured as a tubular shape with both ends fixed to the left mounting member 340L and the right mounting member 340R, respectively, so that multiple wrinkles are formed in the left-right direction (X-axis direction). When the distance between the left mounting member 340L and the right mounting member 340R becomes closer or further apart, these wrinkles may be folded or unfolded. Furthermore, the cover member 350 may have a bellows shape. Here, the material of the cover member 350 can be selected from a variety of plastics. In addition, an iron core or the like may be inserted into at least some of the wrinkles in the cover member 350 in order to form such a wrinkle shape, maintain the shape above a certain level, or improve strength.

[0130] According to this embodiment of the present invention, even if the distance or position between the two mounting members 340 changes, sufficient space for accommodating the link busbar 200 located inside the cover member 350 can be secured. Furthermore, according to this embodiment, the length of the cover member 350 can be effectively changed in response to a change in position in a specific direction between the two mounting members 340, i.e., 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 with such changes in position.

[0131] Figure 26 is a schematic diagram showing some components of a battery system according to yet another embodiment of the present invention. Furthermore, for the sake of clarity, Figure 26 shows some components separated.

[0132] Referring to Figure 26, the protective cover 300 may further include a roof member 360. The roof member 360 may be formed in a plate shape and positioned on top of the cover member 350. In particular, the roof member 360 may be configured to cover the top of the cover member 350. For example, the roof member 360 may be formed in a substantially rectangular plate shape and configured to cover all or most of the cover member 350 when viewed from above. Furthermore, the roof member 360 may be larger than the cover member 350 in the left-right direction (X-axis direction) and the front-back direction (Y-axis direction). Here, the roof member 360 may be positioned above and separated from the cover member 350, or it may be positioned so that at least a portion of it is in contact with the cover member 350.

[0133] According to this embodiment of the present invention, the foreign matter penetration prevention performance of the protective cover 300 is further improved. In particular, during rainy weather, raindrops fall from above the protective cover 300, but the roof member 360 temporarily blocks the raindrops, thereby reducing the amount of raindrops that flow onto the cover member 350 and / or the mounting member 340. Furthermore, according to this embodiment, the durability of the cover member 350 and / or the mounting member 340 can be further improved. In particular, if the cover member 350 is made of a highly flexible material, its durability may decrease, but according to this embodiment, the roof member 360 can compensate for the shortcomings in the durability of the cover member 350.

[0134] Furthermore, the roof member 360 may be formed to be longer in the left-right direction than the left-right separation distance between two battery containers 100 that are arranged adjacent to each other in the left-right direction. For example, referring to the embodiment in Figure 26, the width of the roof member 360 in the left-right direction (X-axis direction) may be formed to be greater than the left-right separation distance between the left container 100L and the right container 100R. Also, fastening holes may be formed at both ends of the roof member 360 in the left-right direction, as shown by H13, and corresponding fastening holes may be formed in the two container housings 120, as shown by H14. The roof member 360 can then be fastened and fixed to the container housings 120 by passing bolts through the fastening holes H13 in the roof member 360 and the fastening holes H14 in the container housings 120.

[0135] According to this embodiment of the present invention, the waterproofing or dustproofing performance of the roof member 360 is further improved. In particular, according to this embodiment, the penetration of water and foreign matter from the fastening portion between the mounting member 340 and the container housing 120 can be suppressed more effectively.

[0136] Furthermore, the roof member 360 may have a bent portion, as shown by E in Figure 26. Such a bent portion E may have a shape that is bent substantially vertically downward from the end of the roof member 360 so as to cover the cover member 350. For example, the roof member 360 may be formed in a substantially plate shape and have portions that are bent downward at the front (-Y axis direction) end and the rear (+Y axis direction) end.

[0137] According to this embodiment of the present invention, the protective performance of the roof member 360 over the cover member 350 is further improved.

[0138] Figure 27 is a schematic diagram showing a partial configuration of a battery system according to yet another embodiment of the present invention. In particular, Figure 27 is another variation of the roof member 360 that is fastened and fixed in the upper space between two container housings 120 as shown in Figure 26.

[0139] Referring to Figure 27, the roof member 360 may have slopes formed on it. More specifically, the roof member 360 may have slopes formed on its outer surface, for example, its upper surface, as shown by S1 and S2. The slopes S1 and S2 may be configured to be inclined by a predetermined angle from the horizontal plane (XY plane).

[0140] According to this embodiment of the present invention, foreign matter such as rain, snow, and dust is less likely to remain on the roof member 360. Therefore, it is possible to prevent large loads from being placed on the roof member 360 and to prevent deformation or damage to the roof member 360. Furthermore, it is possible to quickly discharge such foreign matter to the outside and to prevent foreign matter from moving from the top of the roof member 360 toward the cover member 350 or mounting member 340.

[0141] Furthermore, the roof member 360 may have a recess on its outer surface, as shown by G11 in Figure 27. For example, the recess G11 may be formed in a form that is recessed downward from the upper surface of the roof member 360. Such a recess G11 may be realized by bending or folding the roof member 360. Alternatively, the recess G11 may be formed in a form that is carved out to a predetermined depth from the surface of the roof member 360. Here, the slopes S1 and S2 of the roof member 360 may be configured to gradually become lower toward the recess G11.

[0142] According to this embodiment of the present invention, the path for discharging foreign matter accumulating on the upper surface of the roof member 360 to the outside is limited by the recess G11. Therefore, it is possible to more effectively suppress foreign matter from heading toward specific parts of the battery system. In addition, in this case, foreign matter that comes into contact with the outer surface of the roof member 360 can be discharged to the outside more easily.

[0143] For example, in the embodiment shown in Figure 27, when it rains on the upper surface of the roof member 360, rainwater can fall onto the left slope S1 and the right slope S2 of the roof member 360. At this time, the rainwater flows in the direction of arrows F1 and F2 and into the recess G11. The rainwater that has flowed into the recess G11 then flows forward or backward along the recess, as shown by the dotted arrows, before being discharged to the outside of the roof member 360. In other words, the recess G11 defines the discharge path for rain and other foreign matter that falls on the upper surface of the roof member 360.

[0144] In particular, the recess G11 of the roof member 360 may be located in the central part. Furthermore, the roof member 360 may have slopes S1 and S2 located on both sides of this recess G11. In this case, foreign matter such as rain or snow that falls on the upper surface of the roof member 360 may be directed from the roof member 360 to the central part on both sides. This further improves the performance of the roof member 360 in preventing foreign matter penetration.

[0145] Furthermore, fastening holes H13 for connecting the roof member 360 to the container housing 120 may be provided on the left and right ends of the roof member 360. Also, as shown in Figure 26, container terminals 130 may be located near the left and right ends of the roof member 360.

[0146] Therefore, according to this embodiment, when foreign matter such as rain or snow falls on the upper surface of the roof member 360, it is possible to prevent the foreign matter from penetrating into the fastening hole H13, the container terminal 130, and the mounting member 340.

[0147] Figure 28 is an exploded perspective view schematically showing a partial configuration of a battery system according to yet another embodiment of the present invention.

[0148] Referring to Figure 28, the mounting member 340 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 shown by J4, may be formed on the outside of the container housing 120. Furthermore, the insertion groove J4 may have the form of a projection that protrudes laterally from the outer surface of the container housing 120 and then bends upward. When the mounting member 340 is attached to the container housing 120, at least a portion of the mounting member 340 can be inserted into the insertion groove J4 of the container housing 120.

[0149] In particular, when the mounting member 340 is formed in the shape of a square ring, the mounting member 340 may have four frames (edges), as shown by I1 to I4. In this case, one of these frames, I4, can be attached to the insertion groove J4 of the container housing 120, as shown by K1 in the drawing. Fastening holes H11 are formed in the remaining frames, i.e., frames I1 to I3, and they can be connected to fastening holes H12 formed in the container housing 120 by methods such as bolt fastening. In particular, the insertion groove J4 of the container housing 120 may be located below the terminal housing D1. The lower part of the mounting member 340, i.e., the lower frame I4 of the mounting member 340, can be inserted into the insertion groove J4 of the container housing 120.

[0150] According to this embodiment of the present invention, the bonding force between the protective cover 300 and the container housing 120 is further improved. Furthermore, according to this embodiment, the assembly process for attaching the protective cover 300 to the container housing 120 becomes more convenient. In particular, during the process of attaching the mounting member 340 to the container housing 120, the lower part of the mounting member 340 may not be easily bolted due to the cover member 350, etc. However, according to the embodiment shown in Figure 28, the lower part of the mounting member 340 is inserted into the container housing 120, and the sides and upper part of the mounting member 340 are bolted together, making the installation process of the mounting member 340 easier.

[0151] Figure 29 is an exploded perspective view schematically showing a partial configuration of a battery system according to yet another embodiment of the present invention.

[0152] Referring to Figure 29, an insertion groove, as indicated by J1, may be formed on the outside of the container housing 120. The insertion groove J1 may be located above the side opening of the terminal housing D1. The upper insertion groove J1 may also be configured to protrude outward from the outer surface of the container housing 120. In particular, the upper insertion groove J1 may have a form that protrudes laterally from the outer surface of the container housing 120 and then bends downward. The mounting member 340 may be configured such that the upper part, for example, the upper frame I1 of the square frame, is inserted into the upper insertion groove J1.

[0153] According to this embodiment of the present invention, the waterproof and dustproof performance of the protective cover 300 is further improved. In particular, in rainy or snowy conditions, there is a relatively high risk of water flowing in through the gap between the upper frame I1 and the container housing 120 of the mounting member 340. However, according to this embodiment, since the upper frame I1 of the mounting member 340 is configured to be inserted into the container housing 120, it is possible to more reliably prevent water and other foreign matter from flowing into the upper frame I1 side. In other words, according to this embodiment, 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 this embodiment, this effect of preventing inflow becomes even greater.

[0154] Furthermore, as shown in Figure 29, the mounting member 340 insertion configuration can be provided on both the upper frame I1 and the lower frame I4. In this case, the protective cover 300 can be fitted into the upper insertion groove J1 and the lower insertion groove J4 by sliding, as indicated by arrow K2 in Figure 29. A bolt fastening configuration can be applied to the front frame I3 and the rear frame I2, to which the mounting member 340 insertion configuration is not applied. When this sliding fastening is completed, the link bus bar 200 can be pulled through the protective cover 300 towards the terminal housing D1. According to this embodiment, the ease of assembly, connection, and sealing force of the protective cover 300 are further improved.

[0155] The protective cover 300 according to the present invention can be further improved in terms of airtightness at the contact portion with the container housing 120 by methods such as silicone molding. For example, the mounting member 340, which is formed in the shape of a square ring, can have a sealing portion formed along the four frames (edges) with a material such as silicone.

[0156] Figure 30 is an exploded perspective view schematically showing a partial configuration of a battery system according to yet another embodiment of the present invention.

[0157] Referring to Figure 30, a mounting groove for attaching the mounting member 340 may be formed on the outside of the container housing 120, as indicated by M1. The mounting groove M1 may be formed in a manner that it is carved out inward from the outer surface of the container housing 120 by a predetermined distance. Such a mounting groove M1 may be formed in a shape and position that corresponds to the shape and mounting position of the mounting member 340. For example, if the mounting member 340 is formed in the shape of a square ring, as shown in Figure 30, the mounting groove M1 may also be formed in the shape of a square ring.

[0158] According to this embodiment of the present invention, the coupling between the container housing 120 and the mounting member 340 is further improved. Furthermore, according to this embodiment, the mounting groove M1 guides the coupling position of the mounting member 340, further improving the ease of assembly of the protective cover 300. Moreover, according to this embodiment, by inserting the mounting member 340 into the mounting groove M1, the penetration of water and other foreign matter from the coupling portion between the mounting member 340 and the container housing 120 can be prevented more effectively.

[0159] Furthermore, the mounting member 340 and / or the container housing 120 may be equipped with magnets in the parts that are connected to each other. For example, the mounting member 340 may be equipped with a permanent magnet, and the container housing 120 may be made of a material to which such a permanent magnet will stick, such as a ferromagnetic material such as iron.

[0160] According to this embodiment of the present invention, the bonding strength and ease of assembly of the mounting member 340 are further improved. In particular, when bolting the mounting member 340 to the container housing 120, if the position of the mounting member 340 is stably fixed by a magnet, the bolting work can be made easier.

[0161] On the other hand, the descriptions of many embodiments described in Figures 18 to 30 can be applied identically or similarly to the descriptions of many embodiments mentioned above, such as the embodiments in Figures 12 to 17.

[0162] For example, in the embodiment shown in Figure 12, the mounting member 340 can be attached to the side opening of the terminal housing D1. In particular, the ring-shaped mounting member 340 can be attached to the container housing 120 in a manner that surrounds the side opening of the terminal housing D1.

[0163] As another example, in the embodiment shown in Figure 15, the upper edge of a rectangular ring-shaped mounting member 340 can be bolted to the side surface of the connecting reinforcement member F. Furthermore, the end of the roof member 360, as described in the embodiments of Figures 26 and 27, can be joined and fixed to the upper surface of the connecting reinforcement member F. In addition, fastening holes may be formed in the connecting reinforcement member F for joining and fixing to other components, as shown by H14 in Figure 26. Such additional embodiments will not be described in detail.

[0164] Figure 31 is a schematic diagram showing the configuration of a link busbar 200 according to one embodiment of the present invention.

[0165] Referring to Figure 31, the link bus bar 200 according to the present invention may include a connect portion 210 and a cable 220. Here, there may be multiple connect portions 210 in a number corresponding to the number of battery systems connected by the link bus bar 200. For example, if the link bus bar 200 electrically connects two battery systems, the connect portions 210 may be provided in two groups, as shown in Figure 31. Or, if the link bus bar 200 connects three battery systems, the connect portions 210 may be provided in three groups. Of course, there may be more connect portions 210 than the number of battery systems connected. The connect portion 210 may be the part of the link bus bar 200 that is directly in contact with and coupled to the container terminal 130. Therefore, the connect portion 210 may have a fastening structure corresponding to the container terminal 130 so as to be coupled and fixed to the container terminal 130. For example, the connector portion 210 may be configured to have fixing holes and to be bolted to the container terminal 130.

[0166] The cable 220 may be configured to connect multiple such connect sections 210. For example, in the case of a link busbar 200 provided with connect sections 210 on both sides, as shown in Figure 31, the cable 220 may connect the connect sections 210 on both sides. That is, both ends of the cable 220 may be connected to different connect sections 210. The cable 220 may be constructed in a form in which the surface of a metallic wire, such as copper, is coated with a non-conductive material such as a polymer. In particular, in the link busbar 200 of the battery system according to the present invention, multiple cables 220 may be provided. For example, the link busbar 200 may be constructed in a form in which three or six cables 220 are provided between two connect sections 210. In this case, the multiple cables 220 may not be fixed to each other and may be configured to be separable. For example, three cables 220 may be configured in a form in which both ends are connected to the connect section 210, but the remaining parts, especially the central parts, are separated from each other.

[0167] According to this embodiment of the present invention, errors that occur during the construction of a battery system can be effectively dealt with. In particular, when two battery systems are arranged adjacent to each other, even if tolerances occur in the vertical, horizontal, or front-to-back directions, the configuration of the link busbar 200 can adaptively accommodate such tolerances. Furthermore, this embodiment offers superior tolerance handling capabilities compared to flexible flat cables that are flexible only in specific directions.

[0168] A battery system according to one embodiment of the present invention may further include a control module. The control module may be located inside or outside the container housing 120 and may be configured to control the overall operation and state of the battery container.

[0169] An energy storage system according to one embodiment of the present invention includes the battery system according to the present embodiment described above. In particular, although the battery system according to one embodiment of the present invention was described focusing on two battery containers 100, it may include three or more such battery containers 100. Therefore, the energy storage system according to the present invention may include a battery system that includes two or more battery containers 100. In addition to the battery system, the energy storage system according to the present invention may further include a control container for controlling various operations of the battery system, such as charging and discharging operations. Furthermore, the energy storage system according to the present invention may further include a fire-fighting device to respond to fires in the battery system. For example, the fire-fighting device may be a water injection unit configured to supply water or the like to the inside of a battery container 100 when a fire occurs in a particular battery container 100.

[0170] On the other hand, while terms such as up, down, left, right, front, and back are used in this specification to indicate direction, these terms are used for convenience of explanation and it is obvious to those skilled in the art that they can change depending on the position of the object being examined, the position of the observer, etc. Also, while terms such as inside and outside are used in this specification to indicate direction, unless otherwise specified, for each component, inside means the direction toward its center and outside means the opposite direction.

[0171] Although the present invention has been described above with reference to limited embodiments and drawings, it goes without saying that the present invention is not limited thereto, and that various modifications and variations can be made by persons with ordinary skill in the art to which the present invention belongs, within the equivalent scope of the technical concept and claims of the present invention. [Explanation of Symbols]

[0172] 100: Battery container 110: Battery module 120: Container Housing 130: Container terminal 200: Link bus bar 210: Connect Department 220: Cable 300: Protective cover 310: Bottom cover 311: First bottom cover 312: Second bottom cover 320: Top cover 330: Guide cover 331: Horizontal guide section 332: Vertical guide section 340: Mounting parts 350: Cover component 360: Roof components 410: Top terminal cover 420: Side terminal cover

Claims

1. A plurality of battery containers comprising one or more battery modules, a container housing that houses 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, Each end of the link busbar is connected to the container terminals of different battery containers, electrically connecting multiple battery containers together. Includes a protective cover that is coupled to the container housing of a plurality of battery containers electrically connected by the link busbar and is configured to surround the link busbar in the space between the plurality of battery containers, The container housing includes a housing section for accommodating the container terminals, The aforementioned storage section has openings on the top and sides of the container housing, The aforementioned container housing is An upper terminal cover is attached to the upper surface and configured to open and close the upper end of the opening, The system includes a side terminal cover that is attached to the side and configured to open and close the side of the opening, Battery system.

2. The protective cover is configured to be detachably attached to the outer surface of the container housing. The battery system according to claim 1.

3. The protective cover comprises a plurality of unit covers configured to be separable and connectable to one another. The battery system according to claim 1 or 2.

4. The plurality of unit covers include a bottom cover configured to protect the lower and side portions of the link busbar, and a top cover configured to protect the upper portion of the link busbar. The battery system according to claim 3.

5. The plurality of unit covers further include guide covers configured to be coupled to the outside of the container housing so that at least one of the bottom cover and the top cover can be placed on them. The battery system according to claim 4.

6. The bottom cover includes a first bottom cover configured to protect the front and lower parts of the link busbar, and a second bottom cover configured to protect the rear and lower parts of the link busbar. The battery system according to claim 4.

7. The protective cover comprises two mounting members attached to the outside of two battery containers connected by the link busbar, and a cover member connected to the two mounting members and configured to surround the link busbar in a flexible manner. The battery system according to claim 1 or 2.

8. The mounting member is formed in a ring shape, and the cover member is formed in a tubular shape. The battery system according to claim 7.

9. The cover member is configured to be flexible in the horizontal and vertical directions. The battery system according to claim 7.

10. The cover member is made up of a sheet that is rolled up and has both ends fixed. The battery system according to claim 7.

11. The cover member is made of a woven fabric. The battery system according to claim 7.

12. The cover member is constructed in a corrugated tubular shape. The battery system according to claim 7.

13. A plurality of battery containers comprising one or more battery modules, a container housing for housing 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, Each end of the link busbar is connected to the container terminals of different battery containers, electrically connecting multiple battery containers together. Includes a protective cover that is coupled to the container housing of a plurality of battery containers electrically connected by the link busbar and is configured to surround the link busbar in the space between the plurality of battery containers, The protective cover comprises two mounting members attached to the outside of the two battery containers connected by the link busbar, and a cover member connected to the two mounting members and configured to surround the link busbar in a flexible manner. The protective cover further comprises a roof member positioned on the upper part of the cover member. Battery system.

14. The mounting member is configured such that at least a portion of it is inserted outside the container housing. The battery system according to claim 7.

15. An energy storage system comprising the battery system according to claim 1 or 2.

16. A protective cover for a battery system in which multiple battery containers are electrically connected to each other by a link busbar, Each of the plurality of battery containers comprises one or more battery modules, a container housing that houses 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. The container housing includes a housing section for accommodating the container terminals, The aforementioned storage section has openings on the top and sides of the container housing, The aforementioned container housing is An upper terminal cover is attached to the upper surface and configured to open and close the upper end of the opening, The system includes a side terminal cover that is attached to the side and configured to open and close the side of the opening, A bottom cover configured to protect the lower and side portions of the link busbar, Includes a top cover configured to protect the upper part of the link bus bar, Protective cover.

17. A protective cover for a battery system in which two battery containers are electrically connected to each other by a link busbar, Each of the plurality of battery containers comprises one or more battery modules, a container housing that houses 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. The container housing includes a housing section for accommodating the container terminals, The aforementioned storage section has openings on the top and sides of the container housing, The aforementioned container housing is An upper terminal cover is attached to the upper surface and configured to open and close the upper end of the opening, The system includes a side terminal cover that is attached to the side and configured to open and close the side of the opening, Two mounting members are attached to the outside of the two battery containers connected by the aforementioned link busbar, Includes a cover member that is connected to two of the aforementioned mounting members and is configured to surround the link bus bar in a flexible manner, Protective cover.

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