Battery System

Abstract

The present invention discloses a battery system with excellent installation ease, expandability, safety, etc. A battery system according to one aspect of the present invention includes a battery rack, a container housing that houses the battery rack in an internal space, and a plurality of battery containers each including a first power line configured to transmit charging power and discharging power, the first power lines being connected to each other, a control module configured to control the plurality of battery containers, a cabinet housing that houses the control module in an internal space, and a control cabinet including a second power line configured to be connected to the first power line of one of the plurality of battery containers.

Description

[Technical field]

[0001] This application claims priority to Korean Patent Application No. 10-2022-0008059, filed on January 19, 2022, the entire contents of which are incorporated herein by reference in their entirety in the specification and drawings.

[0002] The present invention relates to a battery, and more particularly to a battery system including a plurality of battery containers connected to each other. [Background technology]

[0003] In recent years, as issues such as power shortages and environmentally friendly energy have come to the fore, energy storage systems (ESS) for storing generated electricity have been attracting more attention.

[0004] For example, a smart grid system has been proposed as one of the methods for adjusting the supply and demand of electricity. The amount of electricity used by consumers is not always constant, but may fluctuate from time to time. Typically, by using such an ESS, it is easy to build a power management system such as a smart grid system, and it is possible to easily adjust the supply and demand of electricity in a specific region or city. In addition, as the commercialization of electric vehicles becomes widespread, such an ESS can also be applied to electric charging stations that charge electric vehicles.

[0005] The ESS may be configured in various forms, typically including one or more battery containers. A container is a structure that is configured to accommodate items inside, and generally refers to a shipping container that can be transported on land as well as at sea. In particular, shipping containers may be large, such as 20-foot containers or 40-foot containers. The battery containers included in the ESS are large in size, such as shipping containers, and thus the term "container" can be used.

[0006] The battery container may include a plurality of battery modules connected in series and / or parallel to each other. Here, the plurality of battery modules may be stacked via a rack frame or a separate fixing structure to form a battery rack, and one or more battery racks may be accommodated inside the container housing.

[0007] In the case of an ESS used in a smart grid system or the like, a large number of battery containers may be connected to each other in order to increase the charge / discharge capacity. However, a problem with typical battery containers is that they are difficult to transport and install. Furthermore, since the battery containers are large and very heavy, they are difficult to move once positioned. Therefore, connecting a plurality of battery containers to each other on-site may require not only detailed process design and high skill levels of workers, but also a great deal of time and cost.

[0008] In addition, in the case of the conventional ESS, it is not easy to connect additional battery containers. For example, after the installation of the ESS is completed by connecting multiple battery containers, the process of connecting and installing additional battery containers becomes very difficult. Therefore, there is a problem that the process of adjusting or expanding the value chain of the ESS by connecting multiple containers on-site is very complicated and not easy. For example, when installing an existing ESS, ground work must be performed in order to directly connect a battery container to a power conversion system (PCS: Power Conversion System or Power Conditioning System) in a DC manner. In addition, when using a battery container, there is a restriction that a longer DC line must be applied as the distance between the battery container and the PCS becomes longer. Therefore, according to the conventional technology, there are problems in that the installation process is complicated, the installation time is very long, and the preparation of each material requires a very large cost and effort.

[0009] In addition to the above-mentioned ease of work, assembly, and scalability, ESS is also required to have a variety of other performance features, such as high energy density and fire safety. Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention has been devised to solve the above problems, and aims to provide a battery system that is easy to install, has excellent expandability, and is safe, and an energy storage system including the battery system.

[0011] The technical problems to be solved by the present invention are not limited to the problems mentioned 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]

[0012] In order to achieve the above-mentioned object, a battery system according to one aspect of the present invention includes a battery rack, a container housing that accommodates the battery rack in an internal space, and a plurality of battery containers, each of which has a first power line configured to transmit charging power and discharging power, the first power lines being connected to each other, a control module configured to control the plurality of battery containers, a cabinet housing that accommodates the control module in an internal space, and a control cabinet including a second power line configured to be connected to the first power line of one of the plurality of battery containers.

[0013] Here, the first power line and the second power line may be configured to transmit DC power.

[0014] The power supply may further include a PCS connected to a second power line of the control cabinet and configured to perform AC-DC conversion of charging power and discharging power for the battery container.

[0015] Additionally, multiple battery containers may be configured to be capable of transferring power to other battery containers.

[0016] The first power line may include a plurality of main connectors and a main bus bar extending continuously between the main connectors.

[0017] In addition, the battery containers may be spaced apart by a predetermined distance in the horizontal direction, and the battery system according to one aspect of the present invention may further include a link bus bar connecting the main connectors of facing battery containers.

[0018] The main connectors may be located on an upper surface of the container housing.

[0019] Also, a plurality of the battery racks may be included inside the container housing and connected in parallel to the first power line.

[0020] In addition, the control cabinet may be connected to the plurality of battery containers and AC lines, respectively.

[0021] Also, two or more of the control cabinets may be included and connected to one PCS, and each control cabinet may be connected to a plurality of battery containers.

[0022] Additionally, the battery system according to one aspect of the present invention may further include a fire cabinet configured to supply a fire extinguishing liquid to one of the plurality of battery containers.

[0023] Additionally, the battery containers may be configured to supply the fire-extinguishing fluid between each other.

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

[0025] According to one embodiment of the present invention, a battery system which has excellent workability or assemblability and can reduce cost and time during construction can be provided.

[0026] In particular, in one embodiment of the present invention, a battery container with excellent scalability that can easily adapt to changes in the ESS value chain can be provided.

[0027] Also, according to one aspect of the present invention, it is possible to provide an all-in-one outdoor enclosure product at a system level that is easy to install in the field and inexpensive, rather than a conventional indoor rack level product.

[0028] Furthermore, according to one aspect of the present invention, in each battery container constituting a battery system, the battery modules and various accessories can be all mounted inside a single housing and transported and installed, which makes it easy to transport to an ESS construction site, minimizes on-site installation, and improves the convenience of expansion.

[0029] Therefore, according to one aspect of the present invention, it is possible to provide a turnkey solution rather than being a component supplier.

[0030] Moreover, according to one aspect of the present invention, an energy storage system with high energy density can be provided.

[0031] According to one embodiment of the present invention, a battery container with improved safety in the event of a fire or the like can be provided.

[0032] Furthermore, according to one aspect of the present invention, when an energy storage system is constructed using a plurality of battery containers, the convenience of constructing a fire protection system can be improved.

[0033] In addition, various other additional effects can be achieved by many embodiments of the present invention. The various effects of the present invention will be described in detail in each embodiment, but the description of the effects that are easily understood by those skilled in the art will be omitted.

[0034] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention, serve to further understand the technical ideas of the present invention. Therefore, the present invention should not be interpreted as being limited only to the matters described in the drawings. [Brief description of the drawings]

[0035] [Figure 1] 1 is a perspective view showing a schematic configuration of a portion of a battery system according to an embodiment of the present invention; [Diagram 2] 2 is a diagram illustrating an electrical connection configuration of a battery system according to an embodiment of the present invention; [Diagram 3] 1 is a perspective view illustrating a state in which a portion of a battery container included in a battery system according to an embodiment of the present invention is separated or moved; [Figure 4] 1 is a top view illustrating a schematic configuration of a portion of a battery system according to an embodiment of the present invention; [Diagram 5] FIG. 5 is a front view of the configuration of FIG. [Figure 6] FIG. 5 is an enlarged view of a connection portion between battery containers in the embodiment of FIG. 4. [Figure 7] FIG. 11 is an exploded perspective view illustrating a partial configuration of a battery container included in a battery system according to another embodiment of the present invention. [Figure 8] FIG. 8 is an assembled perspective view of the configuration of FIG. [Figure 9] FIG. 13 is a schematic diagram illustrating a partial configuration of a battery container included in a battery system according to yet another embodiment of the present invention. [Figure 10]FIG. 13 is a schematic diagram illustrating a partial configuration of a battery container included in a battery system according to yet another embodiment of the present invention. [Figure 11] FIG. 13 is a schematic diagram illustrating a connection configuration of a battery container included in a battery system according to yet another embodiment of the present invention. [Figure 12] FIG. 13 is a schematic diagram illustrating a connection configuration of a battery container included in a battery system according to yet another embodiment of the present invention. [Figure 13] FIG. 13 is a schematic diagram illustrating a partial configuration of a battery container included in a battery system according to yet another embodiment of the present invention. [Figure 14] FIG. 14 is a diagram illustrating a partial connection configuration of a battery system including the battery container of FIG. 13. [Figure 15] 13 is an exploded perspective view illustrating a schematic configuration of a portion of a battery system according to still another embodiment of the present invention. FIG. [Figure 16] FIG. 16 is a perspective view showing a partial configuration of a battery system to which the embodiment of FIG. 15 is applied. [Figure 17] 13 is a diagram illustrating a schematic configuration of a battery system according to yet another embodiment of the present invention. FIG. [Figure 18] 13 is a diagram illustrating a schematic configuration of a battery system according to yet another embodiment of the present invention. FIG. [Figure 19] FIG. 11 is a perspective view illustrating a schematic configuration of a battery container included in a battery system according to yet another embodiment of the present invention. [Figure 20] FIG. 20 is an exploded perspective view of a portion of the configuration of FIG. 19. [Figure 21] FIG. 11 is a perspective view illustrating a schematic configuration of a battery container included in a battery system according to yet another embodiment of the present invention. [Figure 22] 13 is a diagram illustrating a schematic configuration of a portion of a battery system according to still another embodiment of the present invention. FIG. [Diagram 23] FIG. 13 is an enlarged view of a portion of a battery container according to yet another embodiment of the present invention. [Figure 24] FIG. 2 is a schematic diagram illustrating a connection form of a fire extinguishing module between two battery containers in a battery system according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0036] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings. Prior to this, the terms and words used in the present specification and claims are not to be construed as being limited to their ordinary and dictionary meanings, but are to be construed as having meanings and concepts corresponding to the technical ideas of the present invention, in accordance with the principle that the inventors themselves can appropriately define the concepts of terms in order to best describe the invention.

[0037] Therefore, it should be understood that the embodiment described in this specification and the configurations shown in the drawings are merely the most preferred embodiment of the present invention and do not represent the entire technical idea of ​​the present invention, and therefore there may be various equivalents and modifications that can be substituted therefor at the time of this application.

[0038] Meanwhile, in this specification, terms indicating directions such as up, down, left, right, front, and rear are used, but such terms are used for convenience of explanation, and it is obvious to those skilled in the art of the present invention that such terms may change depending on the position of the target object, the position of the observer, etc. In particular, in the drawings, unless otherwise specified, the X-axis direction indicates the left-right direction, the Y-axis direction indicates the front-back direction, and the Z-axis direction indicates the up-down direction, respectively.

[0039] In this specification, the terms inside and outside may be used with respect to each component, but unless otherwise specified, inside means the direction toward the central portion of each component and outside means the opposite direction.

[0040] In addition, this specification includes various embodiments, and in each embodiment, where the description of other embodiments is equally or similarly applicable, detailed descriptions will be omitted and differences will be primarily described.

[0041] FIG. 1 is a perspective view showing a schematic configuration of a portion of a battery system according to one embodiment of the present invention, and FIG. 2 is a diagram showing a schematic electrical connection configuration of the battery system according to one embodiment of the present invention.

[0042] 1 and 2, a battery system according to one embodiment of the present invention includes a battery container 100 and a control cabinet 200.

[0043] The battery container 100 may include a battery rack 110, a container housing 120, and a first power line 130.

[0044] The battery rack 110 may include a plurality of battery modules 111. Here, each battery module 111 may be configured in a form in which a plurality of battery cells (secondary batteries) are housed in a module case. Then, each battery module 111 may be stacked in one direction, for example, in the vertical direction, to form the battery rack 110. In particular, the battery rack 110 may be provided with a rack case to facilitate stacking of the battery modules 111. In this case, the plurality of battery modules 111 may be housed in respective storage spaces provided in the rack case to form a module stack. Then, one module stack may constitute one battery rack 110, or two or more module stacks may constitute one battery rack 110.

[0045] The battery modules 111 included in the battery rack 110 may further include a control unit such as a battery management system (BMS) for each or a certain group. For example, a separate pack BMS may be provided for each battery module 111. In this case, each battery module 111 may also be referred to as a battery pack. That is, the battery rack 110 may include a plurality of battery packs. In the following description, the battery module 111 may be replaced with a battery pack.

[0046] One or more battery racks 110 may be included in the battery container 100. In particular, a plurality of battery racks 110 may be included in the battery container 100. The plurality of battery racks 110 may be arranged in at least one direction, for example, horizontally. For example, the battery container 100 may include eight battery racks 110, which may be arranged in the left-right direction (X-axis direction) inside the battery container 100. When a plurality of battery racks 110 are included, a separate control unit, for example, a rack BMS, may be provided for each battery rack 110. In this case, the rack BMS may be connected to a plurality of pack BMSs included in the battery rack 110, and may transmit and receive data to and control the plurality of pack BMSs. Meanwhile, when one or more rack BMSs are included in the battery container 100, the rack BMS may be connected to a separate control device, for example, a control cabinet 200, provided outside the battery container 100. Alternatively, if the battery container 100 includes multiple rack BMSs, the battery container 100 may further include a separate integrated control unit, such as a battery processing unit (BPU), that communicates with and / or controls the multiple rack BMSs.

[0047] An empty space may be formed inside the container housing 120. The container housing 120 may accommodate the battery rack 110 in the internal space. More specifically, the container housing 120 may be formed in a substantially rectangular parallelepiped shape as shown in FIG. 1, etc. In this case, the container housing 120 may include an upper housing, a lower housing, a front housing, a rear housing, a left housing, and a right housing with the internal space at the center. The container housing 120 may accommodate the battery rack 110 in the internal space defined by the six unit housings.

[0048] The container housing 120 may be made of a material that has a certain level of rigidity and can stably protect the internal components from external physical and chemical factors. For example, the container housing 120 may be made of or include a metal material such as steel. The container housing 120 may also include the same material as a shipping container.

[0049] Also, the container housing 120 may have the same or similar size as a shipping container. Furthermore, the container housing 120 may conform to a predetermined shipping container standard based on an ISO standard. For example, the container housing 120 may be designed to have the same or similar dimensions as a 20-foot container or a 40-foot container. However, the size of the container housing 120 may be designed to have an appropriate size, pattern, and material depending on the situation. In particular, the size and shape of the container housing 120 may be variously set depending on the construction scale, shape, and topography of a system to which the battery container 100 is applied, for example, an energy storage system. The present invention is not limited to a specific size, shape, material, and the like of the container housing 120.

[0050] The container housing 120 may include one or more doors E to facilitate installation and maintenance of internal components such as the battery rack 110. For example, the container housing 120 may include multiple doors E on the front housing and / or the rear housing.

[0051] The container housing 120 may be configured to be mountable on the ground. Furthermore, when a battery system includes a plurality of battery containers 100, each of the container housings 120 may be mounted on the ground. In this case, the plurality of battery containers 100 may be arranged side by side in the horizontal direction on the ground. Furthermore, the plurality of battery containers 100 may be arranged on the ground at a predetermined distance apart in the horizontal direction. For example, referring to the embodiment of FIG. 2, the plurality of battery containers 100 may be arranged side by side in the left-right direction at a predetermined distance apart.

[0052] The first power line 130 may be configured to transmit charging power and discharging power. That is, the first power line 130 may transmit charging power supplied to the battery container 100 and / or discharging power discharged from the battery container 100. In particular, the first power line 130 may transmit charging power supplied to the battery rack 110 included in the battery container 100 and discharging power discharged from the battery rack 110.

[0053] The first power line 130 may include an electrically conductive material, particularly a metal material, for transmitting power. For example, the first power line 130 may be configured in a form in which a copper plate-shaped conductor or wire is covered with an insulator. Also, the first power line 130 may include two first unit lines, i.e., a first positive line indicated by 130+ and a first negative line indicated by 130-, for transmitting power, as shown in FIG. 2.

[0054] A battery system according to an embodiment of the present invention may include a plurality of battery containers 100. For example, as shown in Fig. 2, one battery system may include three containers, i.e., a first container B-LINK #1, a second container B-LINK #2, and a third container B-LINK #3. Of course, the number of such battery containers 100 may be variously changed.

[0055] In this manner, with a plurality of battery containers 100 included in the battery system, the first power lines 130 of the plurality of battery containers 100 may be connected to each other. For example, in the embodiment of FIG. 2, the first power line 130 of the first container B-LINK #1 and the first power line 130 of the second container B-LINK #2 may be directly connected to each other. Also, in the embodiment of FIG. 2, the first power line 130 of the second container B-LINK #2 and the first power line 130 of the third container B-LINK #3 may be directly connected to each other.

[0056] In particular, the first power lines 130 of the battery containers 100 that are physically close to each other may be connected to each other. For example, since the first container B-LINK#1 is physically located closer to the second container B-LINK#2 than the third container B-LINK#3, the first power line 130 of the first container B-LINK#1 may be connected to the second container B-LINK#2. Also, since the third container B-LINK#3 is located closer to the second container B-LINK#2 than the first container B-LINK#1, the first power line 130 of the third container B-LINK#3 may be connected to the second container B-LINK#2. Meanwhile, the first power line 130 of the third container B-LINK#3 may not be directly connected to the first power line 130 of the first container B-LINK#1, but may be indirectly connected to the first power line 130 of the first container B-LINK#1 through the first power line 130 of the second container B-LINK#2.

[0057] In this embodiment, it can be said that the first power lines 130 provided in the plurality of battery containers 100 are connected in series to each other. For example, in the embodiment of FIG. 2, the first power lines 130 provided in the three battery containers 100 can be connected in a row to each other. In particular, each first power line 130 can include a first positive electrode line 130+ and a first negative electrode line 130-. Therefore, it can be said that the first positive electrode line 130+ and the first positive electrode line 130+ are connected in a row to each other, and the first negative electrode line 130- and the first negative electrode line 130- are connected in a row to each other.

[0058] The control cabinet 200 may include a control module 210, a cabinet housing 220, and a second power line 230.

[0059] The control module 210 may be configured to control the battery containers 100 included in the battery system. In particular, when a plurality of battery containers 100 are included in the battery system, the control module 210 may control each of the plurality of battery containers 100. In addition, the control module 210 may monitor various states of the plurality of battery containers 100 and control them in an integrated manner.

[0060] The control module 210 may communicate with a control unit, such as a rack BMS, included in a plurality of battery containers 100 to transmit and receive data. For example, the control module 210 may receive information such as the voltage, current, and charge state of the battery rack 110 included in the battery container 100 from the rack BMS. Then, based on such information, the control module 210 may control the charging and discharging operation of the battery rack 110. Alternatively, the control module 210 may receive sensing information from a sensor included in the battery container 100 and perform various other control operations based on the received sensing information.

[0061] The control module 210 provided in the control cabinet 200 and the BMS included in the battery container 100 may be realized as products with various names and forms, such as a processor, a microprocessor unit (MCU), an application-specific integrated circuit (ASIC), or a central processing unit (CPU).

[0062] The cabinet housing 220 may have an empty space formed therein, and may house the control module 210 in the internal space. In particular, the cabinet housing 220 may be made of a metal material such as steel to ensure rigidity. In this respect, the control cabinet 200 may also be referred to as a control container using the term "container" like the battery container 100. However, the cabinet housing 220 may be configured to be smaller than the container housing 120 since it does not include a battery rack 110 for storing charge / discharge power of the battery system.

[0063] The control cabinet 200 may be a component physically separated from the battery container 100. That is, a cabinet housing 220 forming the exterior of the control cabinet 200 may be located outside the container housing 120 forming the exterior of the battery container 100. In particular, the control cabinet 200 may be located at a point spaced a predetermined distance from the container housing 120. In addition, the control cabinet 200 may be configured to be mountable on the ground, similar to the battery container 100. In particular, the control cabinet 200 may be arranged in parallel on the ground together with a plurality of battery containers 100.

[0064] The second power line 230 may be configured to transmit charging power and discharging power, similar to the first power line 130. In particular, the second power line 230 may be configured to be connected to the first power line 130.

[0065] Furthermore, the battery system according to an embodiment of the present invention may further include a link line 710 as shown in FIG. 2. Here, the link line 710 may be connected between the control cabinet 200 and the battery container 100 and configured to transmit charge / discharge power between the control cabinet 200 and the battery container 100. In addition, since the link line 710 is configured to transmit power between the first power line 130 and the second power line 230, it may include a positive line and a negative line like the first power line 130 and the second power line 230. That is, the second power line 230 may include two second unit lines, i.e., a second positive line indicated by 230+ and a second negative line indicated by 230-, for transmitting power as shown in FIG. 2.

[0066] Furthermore, when a plurality of battery containers 100 are provided in the battery system, the first power line 130 included in one of the battery containers 100 may be connected to the second power line 230. For example, in the embodiment of FIG. 2, three battery containers 100 are included together with the control cabinet 200, and the second power line 230 of the control cabinet 200 may be directly connected to the first power line 130 of the first container B-LINK#1. Here, it can be said that the other battery containers 100 that are not directly connected to the second power line 230, i.e., the first power line 130 of the second container B-LINK#2 and the first power line 130 of the third container B-LINK#3, are indirectly connected to the second power line 230 through the first power line 130 of the first container B-LINK#1.

[0067] Furthermore, the second power line 230 may be connected in series with the first power line 130. In particular, the second positive electrode line 230+ may be connected in series with the first positive electrode line 130+, and the second negative electrode line 230- may be connected in series with the first negative electrode line 130-.

[0068] The second power line 230 may include an electrically conductive material such as a metal, similar to the first power line 130. For example, the second power line 230 may be configured in a form in which a copper conductor is covered with an insulator.

[0069] One end of the second power line 230, for example, a right end of the second power line 230 in FIG. 2, may be connected to the battery container 100, and the other end of the second power line 230, for example, a left end of the second power line 230 in FIG. 2, may be connected to the power system. Thus, the control cabinet 200 may transmit charging power and discharging power between the power system and the plurality of battery containers 100 through the second power line 230. Meanwhile, in this specification, the power system may be a concept including loads such as power plants, substations, or power distribution lines connected thereto, as well as homes and factories. That is, the power system may broadly mean an object connected to the battery system according to an embodiment of the present invention and transmitting and receiving charging power or discharging power to and from the battery system.

[0070] According to this embodiment of the present invention, a battery system that is easy to install can be provided. In particular, according to this embodiment, a plurality of battery containers 100 and a control cabinet 200 provided separately from the battery containers 100 can be included in the battery system as one group. In this case, it can be said that each of the battery containers 100 and the control cabinet 200 has components built in an all-in-one form inside each housing. Therefore, in the task of constructing a battery system including a plurality of battery containers 100 and the control cabinet 200, transportation and on-site installation are very easy.

[0071] Also, according to the present embodiment, when the control cabinet 200 and one battery container 100 are connected in the process of constructing the battery system, the other battery containers 100 do not need to be directly connected to the control cabinet 200 on the path for transmitting power. Therefore, in the case of a battery container 100 far away from the control cabinet 200, it is only necessary to connect the power transmission path to the other adjacent battery container 100, and it is not necessary to directly connect the power transmission path to the control cabinet 200. Therefore, in this case, the convenience of installation is improved, while the cost and time due to installation are reduced.

[0072] In addition, according to the present embodiment, it is easy to add another battery container 100 after the construction of the battery system is completed. Therefore, the expandability of the battery system or the energy storage system is improved, and the scale can be easily adjusted.

[0073] Also, according to the present embodiment, the control cabinet 200 is included separately from the battery container 100. Therefore, various operations of each battery container 100 can be controlled or monitored by the control cabinet 200. In this case, it is not necessary or the necessity to provide a separate control unit for each battery container 100 is reduced. Therefore, each battery container 100 can reduce the space required for providing a separate control unit, which is advantageous for improving energy density. Also, in this case, the manufacturing cost of the battery container 100 for providing the control unit can be reduced.

[0074] As described above, the battery system according to an embodiment of the present invention may include a plurality of battery containers 100 and at least one control cabinet 200. In this case, it can be said that the plurality of battery containers 100 and the control cabinet 200 are connected to each other via a transmission path for charging and discharging power. It can also be said that the plurality of battery containers 100 and the control cabinet 200 are connected to each other to form a link system. In this respect, the battery containers 100 may be referred to as a B-LINK, and the control cabinet 200 may be referred to as an E-LINK. The battery system according to an embodiment of the present invention may also be referred to as a link system.

[0075] In the battery system according to an embodiment of the present invention, the battery containers 100 may be configured in the same manner. For example, in the embodiment of FIG. 2, the three battery containers 100 are configured in the same shape, and even if their positions change, the battery system according to an embodiment of the present invention may be maintained as is. For example, in the embodiment of FIG. 2, the second container B-LINK#2 may be disposed at the position of the first container B-LINK#1, and the first container B-LINK#1 may be disposed at the position of the second container B-LINK#2. That is, in the battery system according to an embodiment of the present invention, the battery containers 100 may be manufactured in the same shape, and it is not necessary to separately manufacture them in advance according to the positions they occupy in the battery system or the shape of the battery system. Therefore, it is easier to construct the battery system, which is advantageous in terms of cost and time savings.

[0076] The first power line 130 and the second power line 230 may be configured to transmit DC power, that is, the power transmitted via the first power line 130 and the second power line 230 may be DC power.

[0077] 2, the first power line 130 of the first container B-LINK #1, the second container B-LINK #2, and the third container B-LINK #3 is connected to the second power line 230 of the control cabinet 200. In this case, power may be transmitted in the form of DC, not AC, between the first power line 130 and the second power line 230. Therefore, the first power line 130 and the second power line 230 may all be referred to as DC lines.

[0078] Here, each battery container 100 and control cabinet 200 does not need to have an AC / DC conversion module therein since it is sufficient to transmit power in DC form through the first power line 130 and the second power line 230. In particular, power supplied from the battery rack 110 in a discharging process of the battery rack 110 included in each battery container 100 may be in DC form. In addition, power for charging each battery rack 110 may also be in DC form. Therefore, the battery container 100 does not need to have a separate conversion unit for converting such charging and discharging power between AC and DC.

[0079] In this embodiment, it can be said that each battery container 100 and the control cabinet 200 are connected to each other in a DC manner through the first power line 130 and the second power line 230. And, it can be said that the battery system according to this embodiment of the present invention is a DC link system. In the case of the DC link system according to the embodiment of the present invention, even if only the main power line of one battery container 100 is directly connected to the control cabinet 200 and the main power lines of the other battery containers 100 are not directly connected to the control cabinet 200, the DC link system can be easily constructed.

[0080] The battery system according to one embodiment of the present invention may further include a PCS 400.

[0081] The PCS 400 may be expressed by terms such as a power conversion system or a power conditioning system. The PCS 400 may be provided outside the control cabinet 200 and the battery container 100. The PCS 400 may be connected to a second power line 230 of the control cabinet 200.

[0082] The PCS 400 may be configured to perform AC-DC (alternating current-direct current) conversion of charging and discharging power between the power system and the battery container 100. For example, the PCS 400 may convert AC power supplied from the power system into DC form and supply it to the control cabinet 200 and the battery container 100. The PCS 400 may also convert DC power supplied from the battery container 100 via the control cabinet 200 into AC form and transmit it to the power system side.

[0083] In this embodiment, since the power transmitted between the battery container 100 and the PCS 400 is in DC form, the battery container 100 and the control cabinet 200 do not need to be provided with a separate AC / DC conversion module, etc. Therefore, the shape and structure of the battery container 100 and the control cabinet 200 can be simplified.

[0084] The multiple battery containers 100 included in an embodiment of the present invention may be configured to transmit power between different battery containers 100. For example, each of the multiple battery containers 100 may be configured to transmit charging power supplied from the control cabinet 200 or another battery container 100 to another battery container 100. Also, each of the multiple battery containers 100 may be configured to transmit discharging power supplied from another battery container 100 to the control cabinet 200 or another battery container 100.

[0085] As a more specific example, referring to the embodiment of Fig. 2, the first container B-LINK #1 may transmit the discharging power of the second container B-LINK #2 and the third container B-LINK #3 to the control cabinet 200. In addition, the first container B-LINK #1 may transmit the charging power supplied from the control cabinet 200 to the second container B-LINK #2 and the third container B-LINK #3.

[0086] Furthermore, the second container B-LINK #2 may transmit the discharging power of the third container B-LINK #3 to the first container B-LINK #1 between the first container B-LINK #1 and the third container B-LINK #3. Furthermore, the second container B-LINK #2 may transmit the charging power of the third container B-LINK #3 from the first container B-LINK #1 to the third container B-LINK #3.

[0087] Meanwhile, the first container B-LINK #1, the second container B-LINK #2, and the third container B-LINK #3 are all configured in the same form, and therefore may be configured in a form in which their positions are interchanged. For example, in the embodiment of FIG. 2, the positions of the second container B-LINK #2 and the first container B-LINK #1 may be interchanged. That is, when the second container B-LINK #2 is disposed at the position of the first container B-LINK #1, the second container B-LINK #2 may transmit the power supplied from the control cabinet 200 to the first container B-LINK #1.

[0088] In addition, each battery container 100 may be configured so as not to transmit power to other battery containers 100 or the control cabinet 200 side through the battery rack 110 contained therein.

[0089] 2, when the first container B-LINK #1 transmits charging power from the control cabinet 200 to the second container B-LINK #2, the charging power may be transmitted directly without passing through the battery rack 110 of the first container B-LINK #1. Also, when the first container B-LINK #1 transmits discharging power of the second container B-LINK #2 to the control cabinet 200, the discharging power of the second container B-LINK #2 may be configured not to be supplied to the battery rack 110 included in the first container B-LINK #1.

[0090] In this case, the charging and discharging power of each battery container 100 is transmitted stably without being affected by the state of the other battery containers 100, particularly the state of the battery racks 110 included in the other battery containers 100 that are being passed through.

[0091] FIG. 3 is a perspective view illustrating a state in which a portion of a battery container 100 included in a battery system according to an embodiment of the present invention is separated or moved.

[0092] 1 to 3, the first power line 130 may include a main connector 131 and a main bus bar 132.

[0093] The main connector 131 may be provided in the battery container 100 so as to be electrically connectable to the outside. That is, the main connector 131 may be configured to be connected to another component outside the battery container 100, for example, a first power line 130 of another battery container 100 or a second power line 230 of a control cabinet 200.

[0094] The main connector 131 may be located on at least one side of the container housing 120. For example, the main connector 131 may be located on the left or right side of the container housing 120. Furthermore, a plurality of main connectors 131 may be included in the battery container 100. For example, as shown in FIG 3, the battery container 100 may include two main connectors 131, i.e., a first connector as indicated by MC1 and a second connector as indicated by MC2.

[0095] The multiple main connectors 131 may be located on different side surfaces of the container housing 120. Furthermore, the multiple main connectors 131 may be located on opposing side surfaces of the container housing 120. For example, referring to the embodiment in Figures 1 to 3, the first connector MC1 and the second connector MC2 may be provided on the left and right sides of the container housing 120, respectively.

[0096] The main bus bar 132 may be configured to extend continuously between a plurality of main connectors 131. For example, the main bus bar 132 may be a power line extending long in one direction, for example, the left-right direction. In this case, both ends of the main bus bar 132 may be connected to different main connectors 131, for example, the first connector MC1 and the second connector MC2. The main bus bar 132 may be a path for transmitting power between different main connectors 131, for example, between the first connector MC1 and the second connector MC2.

[0097] Therefore, the main bus bar 132 can transmit discharging power supplied from another component connected to the second connector MC2, for example, the second container B-LINK#2, to the first connector MC1 side. Also, the main bus bar 132 can transmit charging power supplied from another component connected to the first connector MC1, for example, the control cabinet 200, to the second connector MC2 side.

[0098] In addition, the main bus bar 132 may be a transmission path of charging power and discharging power for the battery rack 110 included in the battery container 100. To this end, the main bus bar 132 may be electrically connected to each terminal of the battery module 111 provided in the battery rack 110. Therefore, the main bus bar 132 may be a transmission path of charging power from the main connector 131 to the battery module 111. In addition, the main bus bar 132 may be a transmission path of discharging power from the battery module 111 to the main connector 131.

[0099] The main bus bar 132 may include two unit bus bars, i.e., a positive bus bar 132+ and a negative bus bar 132-, to function as a path for transmitting power. The positive bus bar 132+ may be connected to a positive terminal of the battery rack 110 or a positive terminal of a battery module 111 included therein. And, the negative bus bar 132- may be connected to a negative terminal of the battery rack 110 or a negative terminal of a battery module 111 included therein.

[0100] Also, a main connector 131 may be provided at each end of the positive bus bar 132+ and the negative bus bar 132-. For example, a first connector MC1 and a second connector MC2 may be provided at a left end and a right end of the positive bus bar 132+, respectively. The first connector MC1 and the second connector MC2 provided at both ends of the positive bus bar 132+ may be the positive connector 131+. And, a first connector MC1 and a second connector MC2 may be provided at the left end and the right end of the negative bus bar 132-, respectively. The two connectors provided at both ends of the negative bus bar 132-, i.e., the first connector MC1 and the second connector MC2, may both be the negative connector 131-.

[0101] According to such an embodiment, a battery system including a plurality of battery containers 100 can be constructed more easily.

[0102] In particular, in the battery system according to an embodiment of the present invention, the plurality of battery containers 100 may be arranged spaced apart from each other by a predetermined distance in the horizontal direction. The battery system according to an embodiment of the present invention may further include a link bus bar that connects charge / discharge power paths between the plurality of battery containers 100.

[0103] This will be described more specifically with further reference to FIGS.

[0104] FIG. 4 is a top view showing a schematic configuration of a portion of a battery system according to one embodiment of the present invention, FIG. 5 is a front view of the configuration of FIG. 4, and FIG. 6 is an enlarged view showing the connection portion between battery containers 100 in the embodiment of FIG. 4.

[0105] 4 to 6, there are shown two battery containers 100 having the same configuration, i.e., a first container B-LINK #1 and a second container B-LINK #2. In particular, the first container B-LINK #1 and the second container B-LINK #2 may be arranged side by side in the longitudinal direction, i.e., the left-right direction.

[0106] The two battery containers 100 can be connected to each other through the main connector 131. Therefore, the two battery containers 100 can be arranged so that the sides on which the main connectors 131 are provided face each other. For example, in the embodiment of FIGS. 4 to 6, the two battery containers 100 are provided with the main connectors 131 on the left and right sides, and therefore can be arranged side by side in the left-right direction with the sides on which the main connectors 131 are provided face each other. In particular, in the two battery containers 100 arranged in the left-right direction, the two battery containers 100 can be connected to each other through the main connector 131 on the right side of the first container B-LINK#1 arranged on the left side and the main connector 131 on the left side of the second container B-LINK#2 arranged on the right side.

[0107] At this time, the two battery containers 100 may be arranged to be spaced apart from each other by a predetermined distance, taking into consideration various factors such as tolerance, convenience of installation, prevention of physical damage, heat insulation, etc. For example, the first container B-LINK #1 and the second container B-LINK #2 may be arranged in the left-right direction with a distance of 10 cm to 20 cm between them.

[0108] The link bus bar 500 may be configured to connect the main connectors 131 facing each other in different battery containers 100. For example, in the embodiment of Fig. 4 to Fig. 6, both ends of the link bus bar 500 are connected between the main connector 131 provided on the right side of the first container B-LINK #1 and the main connector 131 provided on the left side of the second container B-LINK #2 facing the first container B-LINK #1, and power can be transmitted therebetween.

[0109] Furthermore, since the main connector 131 has a positive connector 131+ and a negative connector 131-, the link bus bar 500 may also have two link bus bars 500, i.e., a positive link bus bar and a negative link bus bar, as shown in Figures 4 and 6.

[0110] In particular, since the main connector 131 of each battery container 100 is connected to the main bus bar 132, it can be said that the link bus bar 500 is configured to connect the main bus bars 132 of different containers. In particular, since the main bus bar 132 may be configured to transmit charging / discharging power for the battery container 100, it can be said that the link bus bar 500 is configured to transmit charging / discharging power between different battery containers 100. For example, in the embodiment shown in FIG. 4 to FIG. 6, the link bus bar 500 may transmit charging / discharging power between the first container B-LINK#1 and the second container B-LINK#2. More specifically, power for charging the battery rack 110 included in the second container B-LINK#2 may be transmitted from the first power line 130 of the first container B-LINK#1 to the first power line 130 of the second container B-LINK#2 through the link bus bar 500. In addition, the discharge power of the battery rack 110 of the second container B-LINK #2 can be transmitted from the first power line 130 of the second container B-LINK #2 to the first power line 130 of the first container B-LINK #1 through the link bus bar 500.

[0111] According to this embodiment, for two battery containers 100 arranged adjacent to each other with their main connectors 131 facing each other, it is possible to easily achieve a power connection configuration between the two battery containers 100 by simply connecting both ends of the link bus bar 500 to the main connectors 131 of the two battery containers 100, respectively. In particular, in the system according to the embodiment of the present invention, each battery container 100 can provide a transmission path for charging and discharging power to the other battery container 100. Therefore, it is not necessary to provide a separate power path for connecting to an external power system or the like for each battery container 100. For example, in this embodiment, if the first container B-LINK#1 is connected to the power system, it is sufficient that the second container B-LINK#2 is connected to the first container B-LINK#1, and it is not necessary for the second container B-LINK#2 to be separately connected to the power system. Therefore, it is not necessary to provide a long power path for the second container B-LINK#2. Furthermore, according to this embodiment, the length of the link bus bar 500 may be approximately the distance between the two adjacent battery containers 100. Therefore, when a battery system is constructed using a plurality of battery containers 100, convenience in installation and ease of assembly are improved, and costs and work time can be reduced.

[0112] In addition, the battery system according to an embodiment of the present invention can improve the convenience of expansion. For example, in the embodiment of Figs. 4 and 5, another separate battery container 100, for example, the third container B-LINK #3, can be easily connected to the rear stage of the second container B-LINK #2 using the link bus bar 500. In this case, the third container B-LINK #3 only needs to be a battery container 100 having the same configuration as the first container B-LINK #1 and the second container B-LINK #2, and does not need to be configured in a different form from the first container B-LINK #1 and the second container B-LINK #2 for system expansion. In this case, expansion of the capacity, output, etc. of the battery system can be easily realized.

[0113] The main bus bar 132 may be disposed in an internal space of the container housing 120. That is, the main bus bar 132 is embedded in the container housing 120 and is not exposed to the outside. For example, the main bus bar 132 may be located at a lower part of the upper housing, particularly at an upper part of the battery rack 110, as shown in Fig. 3. That is, it can be said that the main bus bar 132 is embedded in the space between the battery rack 110 and the upper housing inside the container housing 120.

[0114] According to this embodiment of the present invention, since the main bus bar 132 is configured in a form embedded inside the battery container 100, the transportation and installation of the main bus bar 132 can be performed simply by transporting and installing the battery container 100. In addition, according to this embodiment, the external exposure of the power transmission path, i.e., the main bus bar 132, can be eliminated or minimized, thereby reducing the risk of damage to the power transmission path and the possibility of leakage current, etc. Therefore, the safety of the battery container 100 and the battery system or energy storage system including the battery container 100 can be improved.

[0115] In addition, in the present embodiment, since the main bus bar 132 is located above the battery rack 110, interference of the battery rack 110 with the main bus bar 132 in the internal space of the container housing 120 can be avoided or minimized. Therefore, the ease of manufacturing the battery container 100 can be improved, and the length of the main bus bar 132 can be minimized. In particular, in the present embodiment, the main bus bar 132 is configured to extend long in a straight line, and there is no need to provide a separate curved section.

[0116] The main connectors 131 may be configured to be exposed to the outside of the container housing 120. For example, referring to the embodiment of Fig. 3 and Fig. 4, two main connectors 131 may be exposed to the outside of the container housing 120. In particular, such main connectors 131 may be located on the outer surface of the container housing 120. That is, the main connectors 131 may be provided on the outer wall of the container housing 120, rather than in the internal space thereof.

[0117] In this case, a worker can easily perform a connection operation to the main connector 131 from outside the container housing 120 without entering the container housing 120. This makes it easier to connect the battery containers 100 to each other. This further improves the convenience of installing or expanding the battery container 100.

[0118] Also, the main connector 131 may be located on the upper side of the container housing 120. For example, as shown in Figs. 3 to 6, the main connectors 131 may be provided on the upper left and right sides of the container housing 120. In this case, the operation of connecting the main connectors 131 to each other becomes easier.

[0119] 6, for example, a second connector MC2 may be provided as the main connector 131 on the right side of a first container B-LINK #1, and a first connector MC1 may be provided as the main connector 131 on the left side of a second container B-LINK #2. In this case, the second connector MC2 and the first connector MC1 may be located on the upper side of the first container B-LINK #1 and the second container B-LINK #2, respectively. Furthermore, such second connector MC2 and first connector MC1 may be exposed to the outside.

[0120] In this embodiment, a worker can move to the upper side of the first container B-LINK#1 and the second container B-LINK#2, and easily connect the link bus bar 500 between the second connector MC2 exposed to the outside and the first connector MC1. Furthermore, a worker does not need to enter the space between the battery containers 100 to connect the two battery containers 100. In this case, not only is workability improved, but the space between the two battery containers 100 can be minimized. This can also contribute to improving the energy density of the energy storage system or reducing the installation space.

[0121] In addition, according to this embodiment, the high voltage connector is located high above the ground, which reduces the risk of flooding and electric leakage. In addition, when the size of the battery container 100 is equal to or larger than a certain level, such as a ship container, the possibility of contact with the main connector 131 during movement of a worker or the like is reduced, which can prevent electric shock accidents in advance.

[0122] Meanwhile, when the main connectors 131 are located on the upper side of the container housing 120, it is preferable that the main bus bar 132 connected between the main connectors 131 inside one battery container 100 is also located on the upper side of the internal space of the container housing 120. In particular, as in the above-described embodiment, the main bus bar 132 may be located on the upper side of the battery rack 110. In this case, the length of the main bus bar 132 is reduced, minimizing interference with the battery rack 110, which is advantageous for cost reduction and productivity improvement during manufacturing of the battery container 100.

[0123] The container housing 120 may be formed with a connector receiving portion, such as a portion indicated by R in Fig. 3 and Fig. 6. In particular, when a plurality of main connectors 131 are included in the battery container 100, a plurality of connector receiving portions R may also be formed. For example, as in the configuration shown in Fig. 3, when two main connectors 131 are located on the left and right sides of the battery container 100, the connector receiving portion R may include a first receiving portion R1 formed on the left side of the container housing 120 and a second receiving portion R2 formed on the right side of the container housing 120.

[0124] Such a connector accommodating portion R may be formed in a shape recessed inward from at least one side of the container housing 120. The main connector 131 may be located in the connector accommodating portion R of the container housing 120. In particular, although the connector accommodating portion R is a portion formed inwardly recessed from the container housing 120, it can also be said that this corresponds to an outer wall portion of the container housing 120. Therefore, it can be said that the main connector 131 is provided on the outer wall of the container housing 120, and that the outer wall of the container housing 120 itself is formed inwardly recessed. Therefore, it can be said that the main connector 131 is located in a portion of the outer wall of the container housing 120 that is recessed inward.

[0125] According to this embodiment of the present invention, the main connector 131 is exposed to the outside so that connecting members including the link bus bar 500 can be easily connected to the main connector 131, while the exposure of the main connector 131 can be minimized. Therefore, it is advantageous for protecting the main connector 131 and the link bus bar 500 connected thereto while improving the workability or installation convenience when connecting other connecting members to the main connector 131. That is, since the main connector 131 is located in a recessed portion between the connector accommodating portion R in the container housing 120, the exposure of the main connector 131 to the outside can be reduced, thereby improving the protection performance for the main connector 131 and the connecting portion of the link bus bar 500 connected thereto. Also, in this case, the main connector 131 can be easily protected by separately covering only the open portion of the recessed portion.

[0126] In particular, the connector accommodating portion R may be located at an edge portion of the upper end of the container housing 120. For example, in the embodiment of Fig. 6, the second accommodating portion R2 of the first container B-LINK #1 may be located at an edge portion of the upper right end of the container housing 120. Also, in the embodiment of Fig. 6, the first accommodating portion R1 of the second container B-LINK #2 may be located at an edge portion of the upper left end of the container housing 120.

[0127] Also, the connector accommodating portion R may be formed so that the main connector 131 is open upward and laterally. Here, the laterally may be a direction in which another adjacent battery container 100 is located. For example, in the embodiment of FIG. 6, the second accommodating portion R2 of the first container B-LINK#1 may be configured so as to be open upward and laterally. Thus, the main connector 131 of the first container B-LINK#1 may be exposed upward and laterally. And the first accommodating portion R1 of the second container B-LINK#2 may be configured so as to be open upward and leftward. Thus, the main connector 131 of the second container B-LINK#2 may be exposed upward and leftward. In this case, it can be said that the second accommodating portion R2 of the first container B-LINK#1 and the first accommodating portion R1 of the second container B-LINK#2 are formed so as to be open in a facing direction. Thus, the two main connectors 131 accommodated in the connector accommodating portion R may be disposed so as to face each other. In this case, the link bus bar 500 can extend linearly between and be coupled to the two main connectors 131 .

[0128] According to such an embodiment of the present invention, a battery system can be constructed more easily. For example, as shown in Fig. 6, when two battery containers 100 are arranged adjacent to each other in the left-right direction, each main connector 131 may be exposed above and to the sides of the adjacently arranged parts. Therefore, a worker can more easily perform the work of attaching or replacing the link bus bar 500 to the main connector 131 exposed in this manner.

[0129] Fig. 7 is an exploded perspective view showing a schematic configuration of a portion of a battery container 100 included in a battery system according to another embodiment of the present invention. In particular, Fig. 7 is an enlarged view of a left portion of the battery container 100 according to the embodiment of the present invention. And Fig. 8 is an assembled perspective view of the configuration of Fig. 7.

[0130] 7 and 8, the battery container 100 according to the embodiment of the present invention may further include a connector cover 140. The connector cover 140 may cover the outside of the connector receiving portion R. That is, the connector receiving portion R may be provided in such a manner that the outer wall of the container housing 120 is recessed inward, and the connector cover 140 may be configured to cover the outside of the recessed portion. In particular, the connector cover 140 may be configured to cover the main connector 131 received in the connector receiving portion R.

[0131] Furthermore, the connector cover 140 may be configured in a form that can be opened and closed to expose or prevent the connector accommodating portion R to the outside. For example, the connector cover 140 may completely close the connector accommodating portion R to prevent the main connector 131 from being exposed to the outside. The connector cover 140 may also open at least a portion of the connector accommodating portion R to expose the main connector 131 to the outside. At this time, when the main connector 131 is exposed to the outside, the link bus bar 500, the link line 710, etc. may be connected to the main connector 131 through the exposed portion.

[0132] The connector cover 140 may include at least one of a top cover 141 and a side cover 142. The top cover 141 may be configured to close or open the upper side of the connector accommodating portion R. That is, the top cover 141 may be configured to cover an upper opening portion indicated by OT among the opening portions of the first accommodating portion R1. And the side cover 142 may be configured to close a side opening portion indicated by OS among the opening portions of the connector accommodating portion R. For example, as shown in FIG. 7 and FIG. 8, the side cover 142 may be configured to cover a left opening portion with respect to the first accommodating portion R1.

[0133] Furthermore, the connector cover 140 may be configured to be at least partially detachable from the connector accommodating portion R of the container housing 120. For example, as shown in FIG 7, the top cover 141 and the side cover 142 may be configured to be completely separable from the connector accommodating portion R.

[0134] According to this embodiment of the present invention, the external exposure of the main connector 131 located outside the container housing 120 can be appropriately adjusted according to the situation. Therefore, the protection performance for the main connector 131 and the connecting members connected thereto can be secured. For example, during transportation of the battery container 100, as shown in FIG. 8, the top cover 141 and the side cover 142 close the open portion of the connector accommodating portion R, thereby preventing damage to the main connector 131 inside and electric shock accidents. When installing the battery container 100, as shown in FIG. 7, the top cover 141 and the side cover 142 can be separated from the connector accommodating portion R to open the connector accommodating portion R. Therefore, an operator can easily connect a connecting member such as a link bus bar 500 to the main connector 131 through the open portion.

[0135] Meanwhile, only a part of the connector cover 140 may be coupled to the connector accommodating portion R to open a part of the connector accommodating portion R and close the other part. For example, after the connection operation of the battery container 100 is completed, the top cover 141 may be coupled again to the connector accommodating portion R to close the upper part of the connector accommodating portion R indicated by OT. In this case, the side part of the connector accommodating portion R indicated by OS is opened to provide a passage through which the link bus bar 500 passes, while the upper part is closed to block rain, dust, and other foreign matter that may flow in from above. Therefore, after the connection of the battery container 100 is completed, this can contribute to protecting the main connector 131 and the link bus bar 500 and preventing electric shock accidents.

[0136] FIG. 9 is a diagram illustrating a schematic configuration of a portion of a battery container 100 included in a battery system according to yet another embodiment of the present invention.

[0137] Referring to FIG. 9, the connector cover 140 may be configured to be slidable relative to the container housing 120 .

[0138] More specifically, the top cover 141 is attached to the top surface of the container housing 120, and may be configured to be slidable in a horizontal direction (left and right direction) as indicated by an arrow B1 in Fig. 9. The top cover 141 may be configured to open and close an upper opening portion OT of the connector accommodating portion R by such a sliding action. For example, in the process of coupling the link bus bar 500 to the main connector 131, the top cover 141 may be slid in the -X-axis direction to open the upper portion of the connector accommodating portion R, thereby improving the convenience of an operator in installing the link bus bar 500. After such coupling work is completed, the top cover 141 may be slid in the +X-axis direction to close the connector accommodating portion R.

[0139] In addition, the side cover 142 may be attached to a side of the container housing 120, and configured to be slidable in a vertical direction (up and down direction) as indicated by an arrow B2 in Fig. 9. The side cover 142 may be configured to open and close the side opening portion OS of the connector accommodating portion R by such a sliding action. For example, during transportation of the battery container 100, the side cover 142 may be maintained in an upwardly slidable state to close the side of the connector accommodating portion R. After transportation of the battery container 100 is completed, the side cover 142 may be slid downward to expose the side of the connector accommodating portion R, and a connecting member such as a link bus bar 500 may be connected thereto.

[0140] Meanwhile, the container housing 120 may further include a connection reinforcement portion, such as a portion indicated by F in Fig. 9. The connection reinforcement portion F may be located at the connector receiving portion R of the container housing 120. In particular, the connection reinforcement portion F may be formed in a form that extends long along the edge of the container housing 120. Furthermore, the connection reinforcement portion F may be located at the edge portion where the connector receiving portion R is formed, and may divide the open portion of the connector receiving portion R into an upper portion and a lateral portion.

[0141] Components included in the battery container 100 of the present invention or components required when constructing an energy storage system using the battery container 100 may be fastened to the coupling reinforcement part F. For example, the connector cover 140 shown in Figs. 7 and 8 may be fastened to the coupling reinforcement part F. More specifically, the coupling reinforcement part F may be provided with fastening holes, protrusions, hook structures, etc. for fastening the top cover 141 and the side cover 142.

[0142] FIG. 10 is a diagram illustrating a schematic configuration of a portion of a battery container 100 included in a battery system according to yet another embodiment of the present invention.

[0143] Referring to FIG. 10, the connector cover 140 may be configured to be hinged to the container housing 120 .

[0144] More specifically, the top cover 141 may be configured such that one end is hinged to the top surface of the container housing 120 as shown by the portion indicated by HT, and is rotatable as shown by the arrows B3 and B3'. The top cover 141 may be configured to open and close the top opening OT of the connector accommodating portion R by such a rotating operation. For example, during transportation of the battery container 100, the top cover 141 may be rotated as shown by B3 to keep the top opening OT of the connector accommodating portion R in a closed state. Then, when the battery container 100 is placed in a specific position to construct an energy storage system, the top cover 141 may be rotated as shown by B3' to open the top opening OT of the connector accommodating portion R. In this case, an operator can easily connect a connecting member such as the link bus bar 500 to the main connector 131 through the top opening of the connector accommodating portion R. Then, when the connection operation to the main connector 131 is completed, the top cover 141 can be rotated as shown by B3 to close the top opening OT of the connector receiving portion R again.

[0145] Also, the side cover 142 may be hinged at one end to the side of the container housing 120 as shown by the portion indicated by HS, and may be configured to be rotatable as shown by the arrows B4 and B4'. The side cover 142 may be configured to open and close the side opening portion OS of the connector housing R by such a rotating operation. For example, during transportation of the battery container 100, the side cover 142 may be rotated as shown by B4 to keep the side opening portion OS of the connector housing R in a closed state. Then, when the battery container 100 is placed in a specific position to construct an energy storage system, the side cover 142 may be rotated as shown by B4' to open the side opening portion OS of the connector housing R. In this case, an operator can easily connect a connecting member such as the link bus bar 500 to the main connector 131 through the side opening portion OS of the connector housing R. On the other hand, even after the connection operation to the main connector 131 is completed, the link bus bar 500 and the like must pass through the side opening portion OS of the connector housing portion R, so the side cover 142 is maintained in an open state.

[0146] According to such an embodiment of the present invention, not only can the opening and closing configuration of the connector cover 140 be easily realized, but the connector cover 140 can also be maintained in a state coupled to the container housing 120 regardless of the opening and closing operation. Therefore, the connector cover 140 can be opened and closed more easily, and there is no risk of losing the connector cover 140.

[0147] In this embodiment, the hinge connection portion HS may be located at the upper end of the side cover 142. In this case, the lower end of the side cover 142 may be rotated upward to open the side opening portion OS of the connector housing portion R. In such an embodiment, the side cover 142 may be configured to protect the outside of the connecting member connected to the main connector 131. This will be described in more detail with reference to FIGS. 11 and 12.

[0148] 11 and 12 are diagrams illustrating a connection configuration of a battery container 100 included in a battery system according to still another embodiment of the present invention.

[0149] 11 and 12 show the right side of the first container B-LINK #1 and the left side of the second container B-LINK #2. At this time, the left side of the first container B-LINK #1, not shown, may be configured in the same shape as the left side of the second container B-LINK #2 shown in the drawings. And the right side of the second container B-LINK #2, not shown, may be configured in the same shape as the right side of the first container B-LINK #1 shown in the drawings. That is, the first container B-LINK #1 and the second container B-LINK #2 are a battery container 100 according to an embodiment of the present invention and may be configured in the same shape.

[0150] First, referring to Fig. 11, the main connector 131 provided on the right side of the first container B-LINK #1 and the main connector 131 provided on the left side of the second container B-LINK #2 may be connected to each other through the link bus bar 500. In this case, in the case of the connector accommodating portion R provided on the left side of the second container B-LINK #2, i.e., the first accommodating portion R1, the top cover 141 and the side cover 142 may be configured to be hinged, as described above with reference to Fig. 10. Therefore, with the top cover 141 and the side cover 142 open, an operator may connect the link bus bar 500 to the main connector 131 of the first container B-LINK #1 and the main connector 131 of the second container B-LINK #2.

[0151] Once this connection work is completed, the top cover 141 provided on the first container B-LINK #1 and the top cover 141 provided on the second container B-LINK #2 can be closed, as shown in FIG. 12, to close the upper part of the connector accommodating portion R of each container.

[0152] Therefore, after the battery container 100 is installed, it is possible to prevent external foreign objects from entering through the top opening OT of the connector accommodating portion R, and to suppress external exposure of electrical connection parts such as the main connector 131, thereby reliably preventing electric shock accidents, etc.

[0153] 11 and 12, the hinge connection portion HS of the side cover 142 of the second container B-LINK #2 may be located on the upper surface side of the connection reinforcement portion F. In this case, when the side cover 142 of the second container B-LINK #2 is placed on the connection reinforcement portion F of the first container B-LINK #1, the side cover 142 may be held horizontally and substantially parallel to the ground. This makes it possible to prevent rain and the like from flowing toward the main connector 131 located on the left or right side.

[0154] In addition, in such an embodiment, the connector cover 140 of at least one of the two interconnected battery containers 100 may be configured to protrude outward in the horizontal direction.

[0155] For example, the side cover 142 of the second container B-LINK #2 may be configured to rotate as indicated by arrow B5 and protrude horizontally toward the first container B-LINK #1 after the connection work of the link bus bar 500 is completed. At this time, the side cover 142 of the second container B-LINK #2 may be configured to cover the space between the second container B-LINK #2 and the first container B-LINK #1. Furthermore, the side cover 142 of the second container B-LINK #2 may be configured to cover the space between the second container B-LINK #2 and the first container B-LINK #1 from above.

[0156] According to this embodiment, the upper side of the link bus bar 500 arranged between the second container B-LINK#2 and the first container B-LINK#1 is covered. This makes it possible to protect the link bus bar 500 and the main connector 131. For example, it is possible to prevent snow, rain, dust, other external foreign matter, etc. from flowing into the link bus bar 500 or the main connector 131 from the upper side of the link bus bar 500.

[0157] In this embodiment, the connector cover 140 configured to protrude outward in the horizontal direction may be configured to be mountable on another battery container 100. For example, as shown in Fig. 12, the side cover 142 of the second container B-LINK #2 may have one end hinged to the second reinforcement part F2 that is the connection reinforcement part F of the second container B-LINK #2, and the other end placed on the first reinforcement part F1 that is the connection reinforcement part F of the first container B-LINK #1.

[0158] In this case, the first reinforcing part F1 of the first container B-LINK #1 may be formed with a mounting part on which the side cover 142 of the second container B-LINK #2 is mounted, as shown by D in Fig. 11. In particular, the mounting part D may be formed in a groove shape recessed downward in the connection reinforcing part F. When the link bus bar 500 is connected between the main connectors 131 of the two battery containers 100, an end of the side cover 142 may be mounted on the mounting part D. Alternatively, the mounting part D may be configured to have various other fastening forms, such as a protrusion or a hook.

[0159] According to such an embodiment of the present invention, the side cover 142 is stably coupled to other containers and the assembly position is guided. Therefore, the ease of assembling the battery containers 100 together is improved. In addition, in this case, the link bus bar 500, the main connector 131, etc. can be more reliably protected by the side cover 142.

[0160] In addition, the side cover 142 may have a sealing member, as shown by C in FIG. 11, on the end side that is placed on the placement part D. Such sealing member C may be made of an elastic material such as rubber, silicone, or polyurethane. In this case, it is possible to prevent impact from being applied to the side cover 142 and the connection reinforcement part F of the container housing 120 when the side cover 142 is placed on the placement part D. Therefore, damage or breakage of the side cover 142 and the connection reinforcement part F is prevented. Also, in this case, the sealing force between the side cover 142 and the connection reinforcement part F is improved, further improving the effect of preventing the intrusion of foreign matter such as water and dust.

[0161] Meanwhile, in the embodiment of FIG. 10, a configuration is shown in which the lower end of the side cover 142 rotates upward to open the side opening portion OS of the connector accommodating portion R, but the side cover 142 may be configured to have a hinged portion at the lower end and rotate an upper end downward to open the side opening portion OS of the connector accommodating portion R. For example, in the embodiment of FIG. 11 and FIG. 12, the side cover 142 provided in the connector accommodating portion R formed on the right side of the first container B-LINK #1 may be hinged at the lower end and rotate an upper end downward to open the side opening portion of the connector accommodating portion R. In this case, the two opposing side covers 142, i.e., the side cover 142 of the first container B-LINK #1 and the side cover 142 of the second container B-LINK #2, may be configured to be opened in opposite directions.

[0162] According to this embodiment, interference between the side covers 142 can be avoided when the side open portions of the connector accommodating portion R are open. For example, the side cover 142 covering the left side of the first accommodating portion R1 of the second container B-LINK#2 can be opened in a form in which it is located above the link bus bar 500, as shown in Figs. 11 and 12. Then, the side cover 142 covering the right side of the second accommodating portion R2 of the first container B-LINK#1 can be rotated downward to come into close contact with the outer wall on the right side of the first container B-LINK#1, thereby opening the right side surface of the second accommodating portion R2.

[0163] According to this embodiment, during transportation of the battery container 100 or after installation is completed, it is possible to prevent external foreign objects from entering the electrical connection configuration of the main connector 131, the link bus bar 500, etc., and to prevent electric shock accidents. In addition, during installation of the battery container 100, the work of connecting the main connector 131 and the link bus bar 500 can be made easier.

[0164] Fig. 13 is a diagram illustrating a partial configuration of a battery container 100 included in a battery system according to another embodiment of the present invention. Fig. 14 is a diagram illustrating a partial connection configuration of a battery system including the battery container 100 of Fig. 13.

[0165] First, referring to Fig. 13, a side cover 142 is provided in a hinged form on the side opening portion OS of the container housing 120, and the side cover 142 may include a main body portion as indicated by SB and a wing portion as indicated by W. The wing portion W may be rotatably connected to the plate-shaped main body portion SB covering the side opening portion OS. In particular, the wing portion W may be hinged to an end portion of the main body portion SB as indicated by HW. For example, the wing portion W may be hinged and rotated as indicated by an arrow B6 in Fig. 13.

[0166] The wing portions W may be located at both ends of the side cover 142. For example, the wing portions W may be located at the front and rear ends of the body portion SB. Furthermore, when the body portion SB is located above the link bus bar 500 in the space between two battery containers 100, the wing portions W may be located at the front and / or rear sides of the link bus bar 500. More specifically, referring to FIG. 14, when the body portion SB of the side cover 142 included in the second container B-LINK#2 is placed on and coupled to the upper surface of the container housing 120 of the first container B-LINK#1, the wing portions W of the side cover 142 may be located at the front and rear sides of the link bus bar 500.

[0167] According to this embodiment of the present invention, the effect of protecting the link bus bar 500 by the side cover 142 is further improved. Particularly, in the case of this embodiment, the upper side of the link bus bar 500 is protected by the body portion SB of the side cover 142, and the front side and the rear side can be covered by the wing portion W of the side cover 142.

[0168] In particular, as shown in Fig. 13, when the side cover 142 is not opened, the wing portion W may be located inside the main body portion SB. In this case, when the side cover 142 is opened as shown by arrow B4', the wing portion W automatically rotates from the main body portion SB as shown by arrow B6 due to gravity. Therefore, a separate operation or driving force for spreading the wing portion W from the main body portion SB is not required, and a quicker, easier, and more economical battery system can be constructed.

[0169] Fig. 15 is an exploded perspective view showing a schematic configuration of a battery system according to still another embodiment of the present invention, and Fig. 16 is a perspective view showing a configuration of a battery system to which the embodiment of Fig. 15 is applied.

[0170] 15 and 16, the battery system according to an embodiment of the present invention may further include a link cover 600.

[0171] The link cover 600 may be configured to be coupled to an outer wall of the container housing 120, particularly to a side of the connector accommodating portion R. For example, as shown in FIG. 15, the link cover 600 may be coupled to the connector accommodating portion R formed on the left side of the battery container 100. Furthermore, an empty space, i.e., a hollow, may be formed in the center of the link cover 600, as shown by a portion V. The link cover 600 may be attached to the container housing 120 such that the hollow V communicates with the side opening portion OS of the connector accommodating portion R.

[0172] The link cover 600 may be configured to be detachable from the outer wall of the container housing 120. In particular, during storage or transportation of the battery container 100, the side cover 142 may be attached to the side opening portion OS of the connector accommodating portion R. Then, in order to connect the battery container 100 to another battery container 100, the side cover 142 opens the side opening portion OS, and the link cover 600 may be coupled to the side wall of the container housing 120 such that the hollow V of the link cover 600 communicates with the side opening portion OS.

[0173] The link cover 600 may be configured such that both ends are coupled to the container housing 120 of the battery container 100. For example, in the embodiment of Fig. 15, both ends of the link cover 600 may be coupled to the right side wall of the container housing 120 of the first container B-LINK #1 and the left side wall of the container housing 120 of the second container B-LINK #2. Here, the ends of the link cover 600 may be coupled to the container housing 120 by various fastening methods such as bolt fastening, hook fastening, etc.

[0174] Furthermore, the link cover 600 may be attached to the container housing 120 in a manner that surrounds the periphery of the connector accommodating portion R, in particular the side opening portion OS of the connector accommodating portion R. For example, the link cover 600 may have a substantially square ring-shaped end portion, and may be attached to the upper, lower, front, and rear portions of the side opening portion OS of the connector accommodating portion R.

[0175] In addition, the link cover 600 may be configured to surround the link bus bar 500 connected to the main connector 131 in a state where it is coupled to a side portion of the connector receiving portion R. For example, as shown in FIG. 15, in a state where a right end portion of the link cover 600 is coupled to a side opening portion OS of the left connector receiving portion R of the second container B-LINK#2, a left end portion of the link cover 600 may be coupled to a side opening portion of the right connector receiving portion R of the first container B-LINK#1 as shown in FIG. 16. At this time, the link bus bar 500 may be coupled between the main connector 131 located in the left connector receiving portion R of the second container B-LINK#2 and the main connector 131 located in the right connector receiving portion R of the first container B-LINK#1. In particular, the link bus bar 500 may be inserted into the hollow V of the link cover 600.

[0176] The link cover 600 may be configured to cover a direction perpendicular to the extension direction of the link bus bar 500. For example, the link bus bar 500 may extend in the left-right direction between two battery containers 100 arranged in the left-right direction, and the link cover 600 may be configured to surround the upper, lower, front and rear parts of the link bus bar 500 with both ends coupled to the two battery containers 100.

[0177] The link cover 600 may be made of a flexible material or shape. In particular, the link cover 600 may include two mounting members 610 attached to adjacent container housings 120, and a cover member 620 provided between the two mounting members 610, as shown in Figs. 15 and 16.

[0178] Here, the mounting member 610 may be formed in a substantially ring shape and configured to be attached while surrounding the periphery of the side opening of the connector accommodating portion R. The cover member 620 may be made of a flexible material and configured to cover the upper side, lower side, front and rear of the link bus bar 500. In particular, the cover member 620 may be configured to have flexibility in the horizontal and vertical directions. The cover member 620 may be configured to be hollow by folding and rolling up a single sheet. The two ends of the folded sheet may be in contact with each other and joined together. That is, the flexible sheet member may be folded and the two ends that were separated may be joined together to form the pipe-shaped cover member 620. Here, the joining portion of the sheet member, particularly the overlapping portion, may be located at the lower part of the cover member 620. Furthermore, the cover member 620 may be configured in a woven form. That is, the cover member 620 may be in the form of a sheet woven using fibers.

[0179] According to such an embodiment of the present invention, it is possible to more reliably prevent the link bus bar 500 and the main connector 131 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 more stably protected. In particular, in the case of a system such as an ESS, which is often placed outdoors, according to this embodiment, the electrical connection configuration of the battery container 100 can be safely protected from various external factors. For example, the link bus bar 500 according to the embodiment of the present invention is safely protected from many external climatic and animal factors such as water, wind, heat, dust, insects, birds, etc. Furthermore, according to this embodiment, it is possible to more reliably achieve the inflow suppression performance against not only materials falling from above the link bus bar 500 toward the link bus bar 500, but also materials approaching from the side or below.

[0180] In addition, according to the present embodiment, it is possible to accommodate tolerances in the size of the space between the two battery containers 100. That is, the link cover 600 is attached between the two battery containers 100, and the space between the two battery containers 100 may have various sizes. Furthermore, even if the mounting positions of the battery containers 100 are determined in the process of constructing a battery system, the positions 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 may change. However, according to the present embodiment, since the link cover 600 has flexibility, the link cover 600 may be deformed into an appropriate shape and attached to the battery container 100. Therefore, the link bus bar 500 can be easily attached and the protection function can be stably performed. In addition, according to the present embodiment, the link cover 600 that protects the link bus bar 500 can be easily manufactured.

[0181] Meanwhile, a plurality of the battery racks 110 may be included inside the container housing 120. That is, the battery container 100 may include a plurality of battery racks 110. In one battery container 100, the plurality of battery racks 110 may be connected in parallel to the first power line 130. For example, in the embodiment of FIG. 2, the positive terminals of the plurality of battery racks 110 included in the first container B-LINK#1 may be connected to the first positive line 130+ and the negative terminals thereof may be connected to the first negative line 130-.

[0182] Furthermore, a battery system according to an embodiment of the present invention may include a plurality of battery containers 100, and the battery racks 110 included in the plurality of battery containers 100 may also be said to be connected in parallel to each other. For example, referring to the embodiment of FIG. 2, the plurality of battery racks 110 included in the first container B-LINK#1 to the third container B-LINK#3 may be connected in parallel to each of the first power lines 130 extending in a straight line.

[0183] In this configuration, even if a problem occurs in the state or connection of a specific battery rack 110 included in some of the battery containers 100 among the multiple battery containers 100, the other battery racks 110 can be operated normally except for the specific battery rack 110. Therefore, it is possible to prevent a problem in which the use of the entire battery system is interrupted due to a problem in some of the battery racks 110.

[0184] As shown in Fig. 2, the control cabinet 200 may be connected to a plurality of battery containers 100 and an AC line 720, respectively. That is, the battery system according to an embodiment of the present invention may further include an AC line 720 in addition to the DC line. Here, the DC line may be the link line 710 described in the embodiment of Fig. 2. That is, the link line 710 may be provided between the control cabinet 200 and the battery containers 100 so that charging and discharging power flows in the form of DC. And, the AC line 720 may be provided connected between the battery containers 100 and the control cabinet 200 in addition to the link line 710 so that AC power flows.

[0185] Furthermore, unlike the link line 710, the AC line 720 may be connected to each of the multiple battery containers 100. For example, referring to the embodiment of FIG. 2, in a battery system including one control cabinet 200 and three battery containers 100, the link line 710 may be configured to connect only between the control cabinet 200 and one battery container 100. More specifically, in the embodiment of FIG. 2, the link line 710 is connected between the control cabinet 200 and the first container B-LINK#1, and no separate link line 710 is connected between the control cabinet 200 and the second container B-LINK#2 or between the control cabinet 200 and the third container B-LINK#3. Meanwhile, in the case of the AC line 720, it may be connected to the control cabinet 200 and each of the three battery containers 100. That is, the AC lines 720 may be directly connected between the control cabinet 200 and the first container B-LINK #1, between the control cabinet 200 and the second container B-LINK #2, and between the control cabinet 200 and the third container B-LINK #3.

[0186] In this embodiment, the control cabinet 200 is separately connected to the battery containers 100 and supplies AC power, etc., to each of the battery containers 100. In particular, a separate three-phase AC power may be supplied to the control cabinet 200, and the AC power may be supplied to the three battery containers 100 from the power thus supplied. The AC power supplied from the control cabinet 200 may be supplied to various components included in the battery containers 100, such as fans for cooling or air conditioning, HVAC (Heating, Ventilation, and Air Conditioning), a CAN (Controller Area Network) repeater, or various sensors.

[0187] Furthermore, the control cabinet 200 may supply a communication signal through the AC line 720. For example, the control cabinet 200 may transmit and receive control signals, sensing signals, and the like to and from each of the multiple battery containers 100 through the AC line 720. Furthermore, the control cabinet 200 and / or the battery containers 100 may transmit and receive signals through PLC (Power Line Communication). Therefore, in such an embodiment, PLC control of the battery system can be easily realized.

[0188] The control cabinet 200 may include a UPS (Uninterruptible Power Supply). The control cabinet 200 may supply component operating power to each battery container 100 by the UPS. In particular, the control cabinet 200 may include both a UPS line and a non-UPS line as the AC lines 720 connected to each battery container 100. For example, in the embodiment of FIG. 2, two AC lines 720 are connected between the control cabinet 200 and each battery container 100, one of which may be a UPS line and the other may be a non-UPS line.

[0189] In addition, the battery container 100 may be configured to supply operating power to various components provided therein, such as a control unit such as a BMS and a cooling unit such as a fan, from the first power line 130. In this case, the voltage of the battery container 100 may be lowered through a voltage regulator or the like before being supplied to the components.

[0190] 17 and 18 are diagrams illustrating a schematic configuration of a battery system according to still another embodiment of the present invention.

[0191] 17 and 18, a battery system according to an embodiment of the present invention may include two or more control cabinets 200. Such two or more control cabinets 200 may be connected to one PCS 400. A plurality of battery containers 100 may be connected to each control cabinet 200.

[0192] More specifically, in the embodiment of FIG. 17 and FIG. 18, the battery system may include six battery containers 100 (B-LINK#1-6), two control cabinets 200 (E-LINK1-2), and one PCS 400. Here, three battery containers 100 and one control cabinet 200 may constitute one link group. Two such link groups may be included in the battery system and may be commonly connected to one PCS 400. In each link group, the three battery containers 100 may be connected to each other through the main connectors 131 located at both left and right ends. As described above, the link bus bar 500 may be connected between the battery containers 100 such as the portion indicated by A1, thereby realizing a DC link between the battery containers 100. In order to connect such a link bus bar 500, the side cover 142 may open the side opening portion OS of the connector receiving portion R in the portion indicated by A1, and the link cover 600 or the like may be attached.

[0193] Meanwhile, in each of the two link groups, in a portion of the battery container 100 located on the outer periphery to which no other container is connected, the side cover 142 may close the side opening portion OS of the connector accommodating portion R. For example, in the embodiment of FIG. 18, as shown in the portion A2, in the right connector accommodating portion R of the battery container 100 located at the rightmost side, the side opening portion OS may be configured to be closed by the side cover 142.

[0194] In the battery system according to an embodiment of the present invention, the battery container 100 may be connected to the control cabinet 200 through a link line 710. The link line 710 connected to the control cabinet 200 may be connected to the main connector 131 of the battery container 100. In this case, the battery container 100 may further include additional components for connection to the link line 710. This will be described in more detail with reference to FIGS. 19 and 20.

[0195] Fig. 19 is a perspective view showing a schematic configuration of a battery container 100 included in a battery system according to still another embodiment of the present invention. Fig. 20 is an exploded perspective view of a portion of the configuration shown in Fig. 19.

[0196] For example, the battery container 100 shown in FIG. 19 shows the leftmost battery container 100 directly connected to the control cabinet 200 in each link group, such as the portion indicated by A3 among the multiple battery containers 100 shown in FIG. 18.

[0197] 19 and 20, the battery container 100 may include a terminal bus bar TB, an insulating panel IP, and / or a terminal cover TC.

[0198] The terminal bus bar TB may be connected to the main connector 131 side directly connected to the control cabinet 200. For example, in the embodiment of FIGS. 19 and 20 , the terminal bus bar TB may be connected to the left main connector 131 of the battery container 100 located at the leftmost position in each link group. And the other end of the terminal bus bar TB may be connected to the link line 710.

[0199] The terminal bus bar TB may be made of an electrically conductive material. The terminal bus bar TB may be plate-shaped. For example, the terminal bus bar TB may be formed of a metal plate. In this case, the terminal bus bar TB may be stably attached to the outer wall of the container housing 120. The terminal bus bar TB may include two terminal bus bars with different polarities, i.e., a positive terminal bus bar and a negative terminal bus bar, for transmitting power.

[0200] Furthermore, the terminal bus bar TB may be configured in a form in which it extends from the main connector 131 located inside the connector housing R to the outside of the connector housing R and is then bent along the outer wall of the container housing 120. In particular, when the main connector 131 is located on the upper surface side of the container housing 120, the terminal bus bar TB may be configured to extend horizontally to the left from the main connector 131 and then bent downward. In this case, the terminal bus bar TB is prevented from protruding outward, and the connection work between the terminal bus bar TB and the link line 710 can be more easily performed. Also, in this case, since the end of the terminal bus bar TB faces downward, it is also easier to bury the link line 710 connected thereto underground.

[0201] The insulating panel IP may provide electrical insulation between the terminal bus bar TB and the container housing 120. To this end, the insulating panel IP may include an electrically insulating material such as rubber, silicone, or plastic. Furthermore, the insulating panel IP may be interposed between the terminal bus bar TB and the outer surface of the container housing 120 to space the terminal bus bar TB from the outer surface of the container housing 120 by a predetermined distance. Furthermore, the insulating panel IP is made of an elastic material, and may prevent shock or vibration from being transmitted between the terminal bus bar TB and the container housing 120.

[0202] The terminal cover TC may be configured to protect the terminal bus bar TB. Therefore, the terminal cover TC may be configured to cover and surround the outside of the terminal bus bar TB. For example, the terminal cover TC may include a shroud panel as shown by TC1 and a shroud cover as shown by TC2. Here, the shroud panel TC1 may be formed in a substantially square ring shape and may be configured to surround the sides, for example, the upper side, lower side, front side, and rear side, of the terminal bus bar TB. And the shroud cover TC2 may be configured in a substantially plate shape and may be configured to cover the open side of the shroud panel TC1. Thus, the shroud cover TC2 may cover the left side of the terminal bus bar.

[0203] According to this embodiment, the terminal bus bars can be stably protected from external physical and chemical factors. In addition, in this embodiment, the shroud cover TC2 is separable from the shroud panel TC1. In this case, separation of the shroud cover TC2 facilitates connection and separation of the terminal bus bars TB, and facilitates maintenance work.

[0204] In addition, the battery container 100 according to the present invention may include a cable cover CC. The cable cover CC may be configured to cover and encase a cable connected to the battery container 100. For example, a plurality of power cables may be connected to the terminal bus bar TB to transmit power. Here, the power cable connected to the terminal bus bar TB may be the above-mentioned link line 710, or may be a separate cable connected to the link line 710. The cable cover CC may be located at one end, for example, the lower end, of the terminal cover TC to protect the plurality of power cables connected to the terminal bus bar TB. Alternatively, a data cable may be connected to the battery container 100 to transmit and receive various data to and from another external component, for example, the control cabinet 200. In this case, the cable cover CC may be configured to protect the data cable connected to the battery container 100 from the outside.

[0205] In particular, the cable cover CC may include a cable tray CC1 and a tray cover CC2. The cable tray CC1 may include a main body portion attached to the outer wall of the container housing 120, and a side wall portion protruding outward from the periphery of the main body portion. For example, the side wall portion may be formed in a form protruding to the left from the front side end and the rear side end of the main body portion. The tray cover CC2 may be coupled to an end of the side wall portion protruding from the main body portion of the cable tray CC1, and may form an empty space inside together with the main body portion and the side wall portion. In particular, such an empty space may be formed in a hollow shape. Therefore, a cable may extend outward from the battery container 100 through the empty space of the cable cover CC. The cable extending outward may be connected to other external components, such as the control cabinet 200 or another battery container 100 side.

[0206] According to this embodiment, the exposure of the cables extending outward from the battery container 100 is minimized, thereby protecting the cables and preventing damage or breakage of the cables. Furthermore, the cable cover CC is configured to form a hollow space downward from the side surface of the container housing 120, so that the cables housed inside are exposed downward to the outside, which is advantageous for installing, managing, and burying the cables underground.

[0207] FIG. 21 is a perspective view that illustrates a schematic configuration of a battery container 100 included in a battery system according to yet another embodiment of the present invention.

[0208] 21, the battery container 100 may have three or more connector receiving portions R. More specifically, the connector receiving portions R are formed on the upper surface of the container housing 120, and may be formed on the left and right sides as well as the front and rear sides. A main connector 131 may be provided in each of the four connector receiving portions R1 to R4. The main connectors 131 may be connected to each other through a main bus bar 132 to allow power, particularly DC power, to flow therebetween. A connector cover 140 that can be opened and closed to expose or cover the main connector 131 may be provided in each of the connector receiving portions R1 to R4.

[0209] According to this embodiment, various types of battery systems can be easily constructed. For example, as shown in FIG. 4 and FIG. 5, two battery containers 100 may be arranged side by side in the left-right longitudinal direction (X-axis direction) and connected to each other in a DC link form. Alternatively, two battery containers 100 may be arranged side by side in the front-rear width direction (Y-axis direction) and connected to each other in a DC link form. Here, when two battery containers 100 are arranged side by side in the left-right longitudinal direction, main connectors 131 of connector receiving portions R1 and R2 located at both left and right ends may be used. Alternatively, when two battery containers 100 are arranged side by side in the front-rear width direction, main connectors 131 of connector receiving portions R3 and R4 located at both front and rear ends may be used. Therefore, the degree of freedom of the overall design form of the battery system and the arrangement position of each component may be increased.

[0210] Meanwhile, in this embodiment, the connector accommodating portion R in which the main connector 131 that is not used depending on the arrangement state of the battery container 100 is located may be covered with the connector cover 140 on both the top and side surfaces.

[0211] In a battery system according to one embodiment of the present invention, the battery container 100 may further include an air conditioning module 160 and / or a ventilation module 170.

[0212] For example, referring to the embodiment of FIG. 3, one or more HVAC units may be attached as an air conditioning module 160 to the container housing 120 of the battery container 100, for example, to the door E. The HVAC unit may circulate air inside the container housing 120. The air conditioning module 160 may be configured to prevent direct contact between the inside air and the outside air. That is, the air conditioning module 160 may be configured to prevent the inside air from being discharged to the outside and to prevent the outside air from flowing into the inside. Therefore, even if the temperature inside the container housing 120 rises, the air conditioning module 160 may absorb only heat from the inside air and discharge it to the outside without directly discharging the inside air to the outside. According to this embodiment, even if a fire or toxic gas occurs inside the battery container 100, it is possible to prevent the gas from being discharged to the outside and causing damage to other devices such as other surrounding battery containers 100, or to workers outside.

[0213] The ventilation module 170 may also be configured to exhaust gas inside the container housing 120 to the outside. The ventilation module 170 may also introduce air outside the container housing 120 into the inside. Thus, the ventilation module 170 can function as a ventilation device. That is, the ventilation module 170 can exchange or circulate gas between the inside and the outside of the container housing 120.

[0214] In particular, the ventilation module 170 may be configured to operate in an abnormal situation, such as when venting gas or fire occurs in a particular battery module 111. Furthermore, the ventilation module 170 may be configured to exhaust gas to the outside when gas is generated inside the container housing 120 due to a thermal runaway phenomenon of the battery rack 110 or the like. Furthermore, the ventilation module 170 may be configured to exist in a closed state under normal circumstances and to switch to an open state under an abnormal situation, such as a thermal runaway situation. In this case, since the ventilation module 170 performs active ventilation, the ventilation module 170 may be referred to as an Active Ventilation System (AVS) or may include such a system.

[0215] In this case, it is possible to prevent a larger problem, such as an explosion, from occurring due to an increase in the internal pressure of the battery container 100. Also, in this case, the combustible gas inside the container housing 120 is quickly discharged to the outside, thereby reducing the possibility of a fire occurring in the battery container 100 or delaying the occurrence of a fire, and reducing the scale of the fire.

[0216] Meanwhile, in an embodiment in which both the ventilation module 170 and the air conditioning module 160 are included in each battery container 100, the ventilation module 170 may not operate in a normal state, but the air conditioning module 160 may operate. In this case, it is possible to prevent external foreign matter or moisture from flowing into the inside of the container housing 120 through the ventilation module 170 during the cooling process.

[0217] According to the present embodiment, since the battery container 100 is provided with the air conditioning module 160 and the ventilation module 170, the air conditioning module 160 and the ventilation module 170 can be transported and installed simply by transporting and installing the battery container 100. Therefore, on-site installation work for installing the energy storage system can be minimized, and the connection structure can be simplified.

[0218] In this embodiment, the air conditioning module 160 and / or the ventilation module 170 may operate under the control of the control cabinet 200. Alternatively, the air conditioning module 160 and / or the ventilation module 170 may be controlled by a control unit contained within the battery container 100, such as a rack BMS.

[0219] The battery system according to one embodiment of the present invention may further include a fire cabinet 300, as shown in FIG.

[0220] The fire cabinet 300 may be configured to supply fire extinguishing liquid to one of the plurality of battery containers 100. This will be described in more detail with further reference to FIGS.

[0221] Fig. 22 is a diagram illustrating a schematic configuration of a portion of a battery system according to yet another embodiment of the present invention. Fig. 23 is an enlarged view of a portion of a battery container 100 according to yet another embodiment of the present invention. In particular, Fig. 23 is an enlarged view of a right lower end portion of the battery container 100. Fig. 24 is a diagram illustrating a schematic connection form of a fire extinguishing module 150 between two battery containers 100 in a battery system according to one embodiment of the present invention.

[0222] 22 to 24, the fire cabinet 300 may be configured to supply extinguishing liquid to the battery container 100. Here, the extinguishing liquid may be water. In this sense, the fire cabinet 300 may be referred to as a term such as WIU (Water Injection Unit) or WIS (Water Injection System). In particular, the fire cabinet 300 may be provided outside the battery container 100 and may have a separate housing of its own. In this case, the housing of the fire cabinet 300 may be made of or include a steel material. The fire cabinet 300 may be configured to hold extinguishing liquid therein or to be provided with extinguishing liquid from a separate external supply source. For example, the fire cabinet 300 may be provided with an extinguishing liquid storage tank or may be connected to a separate fire hydrant to provide the extinguishing liquid to be supplied to the battery container 100.

[0223] The battery container 100 may include a fire extinguishing module 150 for receiving a fire extinguishing liquid (water) provided from the fire cabinet 300. First, the fire extinguishing module 150 may be configured to supply the fire extinguishing liquid supplied from the fire cabinet 300 to the battery rack 110 side inside the battery container 100. In particular, when a fire or the like occurs inside the battery container 100, the fire extinguishing module 150 may supply a fire extinguishing liquid, for example, water, to prevent or extinguish the fire.

[0224] Furthermore, the fire protection module 150 may comprise a fire protection connector 151 , a fire protection pipe 152 and / or an injection nozzle 153 .

[0225] The fire connector 151 may be provided in an exposed form on an outer wall of the container housing 120, as shown in A4 of FIG. 22 and A5 of FIG. 23. The battery system according to an embodiment of the present invention may further include a supply pipe P1. The supply pipe P1 may be connected to the fire connector 151 of the battery container 100. Thus, the fire extinguishing liquid supplied from the fire cabinet 300 may be supplied to the inside of the container housing 120 through the fire connector 151 via the supply pipe P1. The fire connector 151 may be located at the bottom of the container housing 120. In this case, interference with the main connector 131, etc. located at the top of the container housing 120 may be avoided or minimized.

[0226] The fire pipe 152 may be at least partially provided in the internal space of the container housing 120, and one end may be connected to the fire connector 151. Then, the fire extinguishing liquid supplied from the fire cabinet 300 through the fire connector 151 may be transported to a specific space inside the container housing 120. In particular, the fire pipe 152 may be at least partially embedded inside a beam constituting the container housing 120, or attached and fixed to an inner wall of the container housing 120.

[0227] The fire pipe 152 may include a main pipe 152M and a branch pipe 152B.

[0228] The main pipe 152M may have one end connected to the fire connector 151 and may provide the fire extinguishing liquid supplied from the fire cabinet 300 to the branch pipe 152B. Furthermore, the main pipe 152M may have a shape that extends long in the horizontal direction, for example, in the left-right direction, along the longitudinal direction of the battery container 100.

[0229] The branch pipe 152B may be configured in a form in which a plurality of pipes are branched from one main pipe 152M. In particular, the branch pipe 152B may be provided to correspond to each of a plurality of module stacks (formed by stacking a plurality of battery modules 111) arranged in a horizontal direction inside the battery container 100. In this case, one or more module stacks may constitute the battery rack 110.

[0230] For example, if ten module stacks are included in the container housing 120 in the horizontal direction, ten branch pipes 152B may be provided in the fire pipe 152. Each branch pipe 152B may supply fire extinguishing fluid to the battery modules 111 included in each module stack. Furthermore, the branch pipes 152B may have a shape that extends long in the vertical direction to correspond to the stacking shape of the battery modules 111.

[0231] As shown in FIG. 22, the main pipe 152M may be provided at a lower portion of the container housing 120, particularly at the bottom surface. The branch pipes 152B may extend upward from the main pipe 152M disposed at the lower portion. In this case, the extinguishing liquid may be supplied from the lower portion to the upper portion in each branch pipe 152B. According to this embodiment, the extinguishing liquid may be fully filled in the internal space of the branch pipes 152B extending vertically, so that no empty space exists. Therefore, the extinguishing liquid may be fully supplied to any of the battery modules 111 stacked vertically.

[0232] In particular, even during normal operation, the main pipe 152M and / or the branch pipe 152B can be kept filled with extinguishing liquid, which allows for rapid supply of extinguishing liquid when a fire occurs.

[0233] The spray nozzle 153 may be located in the branch pipe 152B and configured to spray extinguishing liquid toward the battery module 111. The spray nozzle 153 may include a glass bulb or may be made of a glass bulb. In this case, when a fire occurs, the glass bulb may break, causing the extinguishing liquid present inside the branch pipe 152B to be sprayed to the outside.

[0234] A plurality of injection nozzles 153 may be arranged along the up-down direction, which is the extension direction of the branch pipe 152B. Furthermore, the injection nozzles 153 may be provided in one-to-one correspondence with each battery module 111. Furthermore, the injection nozzles 153, in particular the glass bulb, may be configured to be inserted into the battery module 111.

[0235] Therefore, when a fire occurs in a specific battery module 111, it is possible to quickly supply extinguishing liquid to the battery module 111. Furthermore, in this case, extinguishing liquid is not supplied to other normal battery modules 111, and it is possible to intensively supply extinguishing liquid to the battery module 111 where a problem has occurred. Therefore, damage to normal battery modules 111 included in the battery container 100 is minimized, while the battery container 100 can be operated normally or in an emergency.

[0236] Meanwhile, the fire cabinet 300 may be configured to supply extinguishing liquid to the battery container 100 in a normal or abnormal situation and to collect the supplied extinguishing liquid. In this case, the battery system according to an embodiment of the present invention may include a collection pipe as indicated by P1' in FIG. 22. For example, in the embodiment of FIG. 22, the fire cabinet 300 may collect extinguishing liquid from the battery container 100 through the collection pipe P1'. To this end, the battery container 100 may include a separate fire connector 151 at a portion indicated by A4' or the like. In this case, the portion indicated by A4 may function as a water inlet in the battery container 100, and the portion indicated by A4' may function as a water outlet in the battery container 100.

[0237] Also, the multiple battery containers 100 may be configured to supply extinguishing liquid between each other. For example, in the embodiment of FIG. 2, three containers, namely, a first container B-LINK#1, a second container B-LINK#2, and a third container B-LINK#3, may supply extinguishing liquid to each other. More specifically, the fire cabinet 300 may supply extinguishing liquid to the first container B-LINK#1. Then, the first container B-LINK#1 may use the extinguishing liquid supplied from the fire cabinet 300 for its own fire suppression, but may also supply the extinguishing liquid to the second container B-LINK#2. Also, the second container B-LINK#2 may use the extinguishing liquid supplied from the first container B-LINK#1 for its own fire suppression or supply the extinguishing liquid to the third container B-LINK#3. In particular, the multiple battery containers 100 may be configured to sequentially supply extinguishing liquid to adjacent containers.

[0238] In particular, the fire extinguishing module 150 provided in each battery container 100 may be configured to supply fire extinguishing liquid supplied from the outside to other battery containers 100. For example, the battery container 100 may have a fire connector 151 on the left side as shown in the portion A4 in FIG. 22. The battery container 100 may also have a fire connector 151 on the right side as shown in the portion A5 in FIG. 23. That is, the battery container 100 may have fire connectors 151 on at least different sides, for example, on the opposite side. Then, inside one battery container 100, a main pipe 152M and / or a branch pipe 152B may be connected between the fire connectors 151 formed on the different sides in this way.

[0239] Furthermore, the battery system according to an embodiment of the present invention may further include a connecting pipe, as indicated by P2 in Fig. 24. The connecting pipe P2 may be connected between the fire connectors 151 provided on the two battery containers 100 to transfer a fire extinguishing liquid, for example, water. In particular, the connecting pipe P2 may be connected to the fire connectors 151 of the two battery containers 100 facing each other. To improve processability or assembly, the connecting pipe P2 may be made of a flexible material or shape.

[0240] As a more specific example, the left container in FIG. 24 is the first container B-LINK#1, which shows the right part of the container shown in FIG. 22. Also, the right part of the battery container 100 in FIG. 23 may have a configuration applied to the right part of the first container B-LINK#1 in FIG. 24. For example, the A5 part in FIG. 23 where the fire connector 151 is provided may have a configuration similar to that of the A5 part in FIG. 24. And the right container in FIG. 24 is the second container B-LINK#2, which may have the same configuration of the fire module 150 as the first container B-LINK#1 in FIG. 22. For example, the A6 part in the second container B-LINK#2 in FIG. 24 may be provided with the fire connector 151 having the same or similar form as the A4 part in FIG. 22. In this way, the two battery containers 100 shown in FIG. 24 are containers included in the battery system according to an embodiment of the present invention, and may be configured in the same form and may not be manufactured separately. Therefore, the battery system can be efficiently constructed even if only the same type of battery containers 100 are used. Also, the battery container 100 is interchangeable in any position.

[0241] In the embodiment of FIG. 24, the second container B-LINK#2 may receive the supply of extinguishing liquid from the first container B-LINK#1 through the connecting pipe P2. More specifically, the extinguishing liquid supplied from the fire cabinet 300 through the main pipe 152M of the first container B-LINK#1 may be transferred to the main pipe 152M of the second container B-LINK#2 via the connecting pipe P2 and the fire connector 151 of the second container B-LINK#2. Then, the extinguishing liquid transferred to the main pipe 152M of the second container B-LINK#2 may supply the extinguishing liquid to the branch pipe 152B of the second container B-LINK#2. In addition, although not shown, when another battery container 100, for example, the third container B-LINK#3, is located on the right side of the second container B-LINK#2, the extinguishing liquid may be transferred between the second container B-LINK#2 and the third container B-LINK#3 through the connecting pipe P2, similar to the embodiment shown in FIG. 24.

[0242] According to such an embodiment of the present invention, in a battery system including a plurality of battery containers 100, a configuration for supplying a fire extinguishing liquid to each battery container 100 can be easily achieved. In particular, according to this embodiment, it is not necessary to individually provide a configuration for storing and supplying a large amount of fire extinguishing liquid such as water for each battery container 100. Also, according to this embodiment, since the fire extinguishing liquid is supplied from the fire cabinet 300, it is not necessary to provide a long supply pipe P1 from each battery container 100 to the fire cabinet 300. Therefore, when constructing a battery system or an energy storage system, the fire equipment construction or installation work can be performed more easily. In particular, according to this embodiment, it is sufficient that the supply pipe P1 is connected to the battery container 100 closest to the fire cabinet 300, and it is not necessary to connect the supply pipe P1 to the fire cabinet 300 for each of the other battery containers 100 individually. Therefore, the length of the supply pipe P1 for supplying the fire extinguishing liquid from the fire cabinet 300 to the battery container 100 can be shortened.

[0243] Therefore, according to the present embodiment, not only the fire safety of the battery system or the energy storage system including the battery system is improved, but also the installation convenience or processability for realizing such a safety-improved structure can be improved. In addition, in this case, the cost and time required for installing fire protection equipment can be reduced. Furthermore, in this embodiment, when adding a battery container 100 to the energy storage system, the fire protection module 150 already built in the battery container 100 can be utilized. Therefore, when the size of the energy storage system is expanded, fire safety facilities can be quickly and conveniently installed.

[0244] Meanwhile, referring to the embodiment of FIG. 2 and FIG. 17, one fire cabinet 300 is in charge of three battery containers 100 and is configured to directly or indirectly supply extinguishing liquid to the battery containers. For example, in the embodiment of FIG. 17, in the case of a first link group including a first container B-LINK#1 to a third container B-LINK#3, one fire cabinet 300 (WIU1) may supply extinguishing liquid to the first container B-LINK#1 to the third container B-LINK#3. In addition, in the case of a second link group including a fourth container B-LINK#4 to a sixth container B-LINK#6, another fire cabinet 300 (WIU2) may supply extinguishing liquid to the fourth container B-LINK#4 to the sixth container B-LINK#6. However, the present invention is not necessarily limited to such a number of containers. For example, one fire cabinet 300 may be configured to supply extinguishing liquid to four or more battery containers 100.

[0245] The fire cabinet 300 may include a control unit separate from the battery container 100 and the control cabinet 200. Such a control unit may be configured to detect an emergency situation such as a fire through its own sensor or a sensor provided in the battery container 100, and supply a fire extinguishing liquid. Alternatively, the control unit of the fire cabinet 300 may receive a control signal instructing the supply of fire extinguishing liquid from the control module 210 of the control cabinet 200 or the BMS of the battery container 100, and perform an operation of supplying fire extinguishing liquid.

[0246] The fire cabinet 300 may communicate with the battery container 100 and / or the control cabinet 200 to perform a firefighting operation to ensure the safety of the battery system. For example, the fire cabinet 300 may directly transmit and receive a signal to the control cabinet 200 through a separate communication line. Also, the fire cabinet 300 may transmit and receive a signal to at least one battery container 100 through a separate communication line. In this case, the fire cabinet 300 may communicate with one battery container 100 among the plurality of battery containers 100. Then, the battery container 100 that directly communicates with the fire cabinet 300 may transmit a signal to the other battery containers 100. For example, in the embodiment of FIG. 2, the fire cabinet 300 may directly transmit a signal only to the first container B-LINK#1. Then, the signal transmitted from the fire cabinet 300 in this manner may be transmitted from the first container B-LINK#1 to the second container B-LINK#2. Also, the second container B-LINK#2 that receives such a signal may transmit the signal to the third container B-LINK#3. In addition, when a signal is transmitted from a plurality of battery containers 100 to the fire cabinet 300, only one battery container 100 may transmit the signal directly to the fire cabinet 300 in a similar manner. And, a signal from another battery container 100 may be transmitted to the fire cabinet 300 via a battery container 100 connected to the fire cabinet 300.

[0247] According to this embodiment, it is possible to reduce the length or number of communication lines between the fire cabinet 300 and the plurality of battery containers 100. Therefore, it is possible to easily construct a battery system or an energy storage system, and to improve convenience of installation.

[0248] Also, as in the embodiment of FIG. 17, when a battery system according to an embodiment of the present invention includes a plurality of control cabinets 200, some of the control cabinets 200 may operate as the main control cabinet 200. For example, when a first control cabinet E-Link1 and a second control cabinet E-Link2 are included, the first control cabinet E-Link1 may function as the main control cabinet 200. In this case, the first control cabinet E-Link1 may directly communicate with the PCS 400. And the second control cabinet E-Link2 may communicate with the first control cabinet E-Link1 and indirectly communicate with the PCS 400.

[0249] Here, the first control cabinet E-Link1 communicates with the battery containers 100 (B-LINK#1, B-LINK#2, B-LINK#3) belonging to the first link group, and can transmit and receive control information, sensing information, etc. for these. Also, the second control cabinet E-Link2 communicates with the battery containers 100 (B-LINK#4, B-LINK#5, B-LINK#6) belonging to the second link group, and can transmit and receive control information, sensing information, etc. for these.

[0250] 17 shows two link groups, three or more link groups may be included in a battery system according to an embodiment of the present invention. Furthermore, a battery system according to an embodiment of the present invention may also include a new link group added to an already constructed configuration. Also, a battery system according to an embodiment of the present invention may be configured to easily add or remove battery containers 100 from a link group.

[0251] Meanwhile, in the battery system according to an embodiment of the present invention, each battery container 100 may include its own fire extinguishing system in addition to the fire extinguishing module 150 described above with reference to Figs. 22 to 24. For example, the battery container 100 may include a built-in fire extinguishing module configured to inject a fire extinguishing material such as Novec-1230 or an aerosol after detecting an abnormal situation such as a fire through a temperature sensor or a smoke sensor. In this case, appropriate responses can be made according to the type of fire, and fire suppression performance can be improved by injecting multiple extinguishing agents.

[0252] Furthermore, the battery system according to an embodiment of the present invention may further include a display module for displaying information regarding the state of the battery container 100. Such a display module may be located on the side of the battery container 100, the control cabinet 200, or the fire cabinet 300. For example, the battery container 100 according to the present invention may include an alarm sound generator, a display device, etc. as a display module for displaying a steady state or an abnormal state such as a failure, overheating, fire, overcharging, or over-discharging.

[0253] The energy storage system according to an embodiment of the present invention includes the battery system according to the embodiment of the present invention described above. In particular, the energy storage system according to an embodiment of the present invention may include a plurality of battery systems according to an embodiment of the present invention. Furthermore, the energy storage system according to an embodiment of the present invention may employ various components of energy storage systems known at the time of filing of the present invention, in addition to the battery system according to an embodiment of the present invention. For example, the energy storage system according to an embodiment of the present invention may further include a power transmission line for transmitting power, other control devices, a power generation device such as a solar power device, and the like, in addition to the battery system according to an embodiment of the present invention.

[0254] Although the present invention has been described above using limited embodiments and drawings, the present invention is not limited thereto, and it goes without saying that various modifications and variations can be made by a person having ordinary knowledge in the technical field to which the present invention pertains within the scope of the technical concept of the present invention and the scope of the claims. [Explanation of symbols]

[0255] 100: Battery container 110: Battery rack 111: Battery module 120: Container housing 130: First power line 130+: first positive line, 130-: first negative line 131: Main connector 131+: Positive connector, 131-: Negative connector MC1: 1st connector, MC2: 2nd connector 132: Main busbar 140: Connector cover 141: Top cover, 142: Side cover 150: Firefighting module 151: Fire connector 152: Fire pipe 152M: Main pipe, 152B: Branch pipe 153: Injection nozzle 160: Air conditioning module 170: Ventilation module 200: Control cabinet 210: Control module 220: Cabinet housing 230: Second power line 230+: second positive line, 230-: second negative line 300: Fire cabinet 400:PCS 500: Link busbar 600: Link cover 610: mounting member, 620: cover member 710: Link Line 720:AC Line R, R1, R2, R3, R4: Connector housing F: Connection reinforcement part C: Sealing material SB: Main body, W: Wing TB: Terminal bus bar, TC: Terminal cover TC1: Shroud panel, TC2: Shroud cover E: Door P1: Supply pipe, P1': Recovery pipe P2: Connecting pipe

Claims

1. A battery rack, a container housing that houses the battery rack in an internal space, and a plurality of battery containers each including a first power line configured to transmit charging power and discharging power, the first power lines being connected to each other; a control cabinet including a control module configured to control the plurality of battery containers, a cabinet housing that houses the control module in an interior space, and a second power line configured to be connected to a first power line of one of the plurality of battery containers; Including the battery system.

2. The battery system of claim 1 , wherein the first power line and the second power line are configured to transmit DC power.

3. 3. The battery system of claim 2, further comprising a PCS coupled to a second power line of the control cabinet and configured to perform AC-DC conversion of charging power and discharging power for the battery container.

4. The battery system of claim 1 , wherein each battery container of the plurality of battery containers is configured to be capable of transferring electrical power from other battery containers.

5. The battery system according to claim 1 , wherein the first power line comprises a plurality of main connectors and a main bus bar configured to extend continuously between the plurality of main connectors.

6. The battery containers are spaced apart from each other by a predetermined distance in a horizontal direction, The battery system according to claim 5 , further comprising a link bus bar connecting main connectors of opposing battery containers to each other.

7. The battery system according to claim 5 , wherein the main connectors are located on an upper surface side of the container housing.

8. The battery system according to claim 1 , wherein a plurality of the battery racks are included inside the container housing and connected in parallel to the first power line.

9. The battery system according to claim 1 , wherein the control cabinet is connected to the plurality of battery containers and an AC line, respectively.

10. Two or more of the control cabinets are included in the battery container and are connected to one PCS; The battery system according to claim 1 , wherein a plurality of the battery containers are connected to each control cabinet.

11. 10. The battery system of claim 1, further comprising a fire cabinet configured to supply a fire extinguishing fluid to one of the battery containers.

12. The battery system of claim 11 , wherein the battery containers are configured to supply the fire-extinguishing fluid between each other.

13. 13. An energy storage system comprising a battery system according to any one of claims 1 to 12.

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