Battery container and energy storage system including the battery container

Abstract

The present invention provides a battery container having improved energy density for a limited ground area, and an energy storage system including the battery container. The battery container according to one aspect of the present invention includes a container body, a coupling portion configured to couple different container bodies together, and a load support portion configured to support a load in the vertical direction of the container body.

Description

Technical Field

[0001] The present invention relates to a battery container and an energy storage system including the battery container, and more particularly, to a battery container with improved energy density and an energy storage system including the battery container. This application claims priority based on Korean Patent Application No. 10-2022-0055923 filed on May 6, 2022, and all of the contents disclosed in the specification and drawings of the application are incorporated into this application.

Background Art

[0002] Examples of currently commercialized secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries have attracted attention because they have almost no memory effect, can be charged and discharged freely, have a very low self-discharge rate, and have a high energy density compared to nickel-based secondary batteries.

[0003] Such lithium secondary batteries mainly use a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively. A lithium secondary battery includes an electrode assembly in which a positive electrode plate coated with such a positive electrode active material and a negative electrode plate coated with a negative electrode active material are arranged with a separator interposed therebetween, and an exterior material that hermetically stores the electrode assembly together with an electrolytic solution, for example, a battery case.

[0004] Generally, lithium secondary batteries can be classified into a can-type secondary battery in which an electrode assembly is housed in a metal can and a pouch-type secondary battery in which an electrode assembly is housed in a pouch made of an aluminum laminate sheet according to the shape of the exterior material.

[0005] While secondary batteries can be used individually, they are generally configured in a way that multiple secondary batteries are electrically connected to each other in series and / or parallel. In particular, multiple secondary batteries, while electrically connected to each other, can be housed inside a single module case to form a single battery module. These battery modules can then be used individually or, in combination of two or more, be electrically connected to each other in series and / or parallel to form higher-level devices such as battery racks and battery packs.

[0006] In recent years, with issues such as power shortages and environmentally friendly energy being highlighted, energy storage systems (ESS) for storing produced electricity have attracted even more attention. For example, smart grid systems have been proposed as one way to adjust power supply and demand. The amount of electricity used by consumers is not always constant but fluctuates from time to time. A typical example is the surge in electricity consumption in the afternoon during the summer due to the use of air conditioners, followed by a sharp decrease at night. Thus, while electricity consumption is not constant but fluctuates frequently, it is practically difficult for electricity suppliers to match electricity production to electricity consumption, even if they adjust production to some extent. This imbalance between electricity supply and consumption can lead to power surpluses or shortages, but smart grid systems can flexibly store and adjust electricity to solve this problem. A smart grid system can be described as a concept in which surplus electricity is stored when and where it occurs, and the stored electricity is supplied when and where it occurs. One of the core components for constructing such a smart grid system is an energy storage system for storing electricity. Furthermore, with the recent commercialization of electric vehicles, energy storage devices can also be utilized in facilities for charging electric vehicles, such as charging stations.

[0007] Typically, such energy storage systems consist of numerous battery containers to ensure a large charging and discharging capacity. Each battery container contains numerous battery racks, and each battery rack contains numerous battery modules.

[0008] Such battery containers require diverse performance characteristics. In particular, in the case of energy storage systems (ESS), multiple battery containers may be installed in a configuration where they are interconnected. However, in conventional energy storage systems, there is no connecting and load-supporting structure for stacking multiple battery containers, and when the ground available for placing the battery containers is limited, it is difficult to configure a large number of battery containers. [Overview of the project] [Problems that the invention aims to solve]

[0009] The present invention was devised to solve the above-mentioned problems and aims to provide a battery container with improved energy density relative to a limited amount of ground, and an energy storage system including the battery container.

[0010] The technical problems that this invention aims to solve are not limited to those described above, and other problems will be clearly understood by those skilled in the art from the following description of the invention. [Means for solving the problem]

[0011] A battery container according to one aspect of the present invention includes a container body, a connecting portion configured to connect different container bodies together, and a load-supporting portion configured to support the vertical load of the container body.

[0012] Preferably, the connecting portion is provided at at least one end of the upper and lower ends of the container body, and may be provided at the corner of the container body.

[0013] Preferably, the connecting portion may be formed to extend further in the vertical direction than the upper or lower end of the container body.

[0014] Preferably, the load-supporting portion is provided at at least one end of the upper and lower ends of the container body and may be configured to support the vertical loads of two different container bodies.

[0015] Preferably, the load-bearing portion may include a first support bracket provided at the lower end of the container body and a second support bracket provided at the upper end of the container body and configured to be connectable to the first support bracket in the vertical direction.

[0016] Preferably, the first support bracket may include a first side bracket coupled to the side of the lower end of the container body, a first coupling bracket coupled to the lower part of the first side bracket and configured to be coupled vertically to the second support bracket, and a first base bracket connected to the first coupling bracket and configured to support the lower surface of the container body.

[0017] Preferably, the second support bracket may include a second side bracket coupled to the side of the upper end of the container body, a second coupling bracket coupled to the upper part of the second side bracket and configured to be coupled vertically to the first coupling bracket, and a second base bracket connected to the second coupling bracket and configured to support the upper surface of the container body.

[0018] Preferably, the load-supporting portion may be located between two different connecting portions on at least one of the upper and lower surfaces of the container body.

[0019] Preferably, a plurality of load-supporting portions may be formed between two different connecting portions.

[0020] Preferably, the load support portion may be located between two different coupling portions at an edge of the container body.

[0021] Preferably, the load support portion may be located symmetrically on both sides with respect to an edge of the container body, based on the edge of the container body. Chuo Line

[0022] Preferably, the load support portion may be configured to support the container body disposed on the ground.

[0023] Preferably, the battery container may further include a support plate configured to support the container body disposed on the ground.

[0024] Preferably, the battery container further includes a fixing member configured to connect the support plate and the coupling portion, and the fixing member may be configured to fix the container body to the ground.

[0025] Preferably, the coupling portion further includes side holes formed in the vertical direction on a side surface of the coupling portion, and the battery container may further include a reinforcing member configured to connect the side holes of two different coupling portions in the vertical direction.

[0026] Also, an energy storage system according to another aspect of the present invention includes at least one or more of the above-described battery containers.

Effects of the Invention

[0027] According to one aspect of the present invention, when coupling different container bodies in the vertical direction, the vertical load of the container body can be stably supported.

[0028] Also, according to one aspect of the present invention, since the container bodies can be stably stacked on the same ground, the energy density of the battery container can be improved with respect to limited ground. ​

[0029] Furthermore, a variety of other additional effects can be achieved through many embodiments of the present invention. These various effects of the present invention will be described in detail in each embodiment, although effects that are easily understood by those skilled in the art will not be described.

[0030] The following drawings accompanying this specification illustrate preferred embodiments of the invention and, together with the detailed description of the invention, serve to further illustrate the technical idea of ​​the invention; therefore, the invention should not be construed as being limited solely to what is shown in the drawings. [Brief explanation of the drawing]

[0031] [Figure 1] This figure shows an energy storage system according to one embodiment of the present invention. [Figure 2] Figure 1 is a perspective view showing the overall shape of the battery container installed in the energy storage system. [Figure 3] Figure 2 shows the battery container viewed from the front. [Figure 4] This is a side view of the battery container shown in Figure 2. [Figure 5] This is a view of the battery container shown in Figure 2, seen from above. [Figure 6] Figure 2 shows the battery container viewed from below. [Figure 7] This is an enlarged view of section A in Figure 2. [Figure 8] This is an enlarged view of section B in Figure 2. [Figure 9] This is an enlarged view of section C in Figure 2. [Figure 10] Figure 9 shows a detailed view of the first support bracket. [Figure 11] This is an enlarged view of section D in Figure 2. [Figure 12] This is a detailed view of the second support bracket shown in Figure 11. [Figure 13] This is an enlarged view of section L in Figure 1. [Figure 14] This is a detailed view of the connecting member shown in Figure 13. [Figure 15] This diagram illustrates a situation where load-bearing sections support the loads of two different container bodies. [Figure 16] This is an enlarged view of section E in Figure 2. [Figure 17] This is a detailed view of the support plate shown in Figure 16. [Figure 18] This is a detailed view of the fixing member shown in Figure 16. [Figure 19] Figure 16 is a diagram illustrating the relationship between the support plate and the load-bearing part. [Figure 20] This figure shows a battery container according to another embodiment of the present invention. [Figure 21] This figure shows a battery container according to another embodiment of the present invention. [Figure 22] This figure shows a battery container according to another embodiment of the present invention. [Figure 23] This figure shows a battery container according to another embodiment of the present invention. [Modes for carrying out the invention]

[0032] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and in the claims shall not be interpreted in their usual and dictionary sense, but in accordance with the principle that inventors can appropriately define the concepts of terms in order to best describe their invention, and shall be interpreted in a sense and concept that corresponds to the technical idea of ​​the present invention.

[0033] Therefore, the embodiments and configurations shown in the drawings described herein represent only one of the most preferred embodiments of the present invention and do not represent the entire technical concept of the invention. It should be understood that there are various equivalents and modifications that can be substituted for these at the time of filing this application.

[0034] Figure 1 shows an energy storage system 1 according to one embodiment of the present invention, Figure 2 is a perspective view showing the overall shape of the battery container 10 provided in the energy storage system 1 of Figure 1, Figure 3 is a front view of the battery container 10 of Figure 2, Figure 4 is a side view of the battery container 10 of Figure 2, Figure 5 is a top view of the battery container 10 of Figure 2, and Figure 6 is a bottom view of the battery container 10 of Figure 2. In this case, only the second battery container B2, which will be described later, is shown as an example in Figures 3 to 6.

[0035] In embodiments of the present invention, the illustrated X-axis direction may mean the width direction, the Y-axis direction may mean the longitudinal direction perpendicular to the X-axis direction on the horizontal plane (XY plane), and the Z-axis direction may mean the vertical direction perpendicular to both the X-axis direction and the Y-axis direction.

[0036] Referring to Figures 1 to 6, an energy storage system 1 according to one embodiment of the present invention includes a battery container 10.

[0037] Such an energy storage system 1 can form a link group in combination with a certain number of battery containers 10 and control containers (E-Link) EL. This will be explained in more detail later through related explanations.

[0038] The battery container 10 described above may include a container body 100, a connecting part 200, and a load-supporting part 300.

[0039] The container body 100 may include a plurality of battery racks inside. Therefore, the container body 100 may be provided with a storage space for accommodating the battery racks. For example, the container body 100 may be formed from a metal material such as steel.

[0040] The battery rack may be configured in a manner in which multiple battery modules are stacked. Here, each battery module may be configured in a manner in which multiple battery cells (secondary batteries) are housed in a module case. Each battery module may be housed in a rack case and configured in a manner in which they are stacked in at least one direction. For example, each battery module may be configured to be stacked vertically through the rack case.

[0041] Alternatively, the container body 100 may not include the battery rack described above, and may house multiple battery modules by configuring a separate internal structure for fixing multiple battery modules.

[0042] The connecting portion 200 may be configured to connect different container bodies 100 together.

[0043] In one embodiment, different container bodies 100 may be arranged to be stacked vertically. At least two of these container bodies 100 may be arranged to be stacked vertically. In this case, the container bodies 100 may be stacked vertically on the same ground.

[0044] The container body 100 may, for example, include a first container body B1 and a second container body B2. In this case, the second container body B2 may be located below the first container body B1. In particular, the second container body B2 may be located on the ground.

[0045] The load support portion 300 may be configured to support the vertical load of the container body 100. For example, the load support portion 300 may be provided in the form of a bracket, but is not limited thereto. The load support portion 300 may be provided integrally with the container body 100, or it may be composed of a separate member.

[0046] The load-bearing portion 300 may be provided in a portion of the container body 100 that is different from the portion where the connecting portion 200, which connects different container bodies 100, is located. This strengthens the structural rigidity of the container body 100 in portions other than the portion where the connecting portion 200 is located.

[0047] According to this embodiment of the present invention, when different container bodies 100 are joined in the vertical direction, the vertical load on the container body 100 can be stably supported.

[0048] Furthermore, since the container bodies 100 can be stably stacked on the same ground surface, the energy density of the battery containers 10 can be improved in a limited amount of ground space.

[0049] The following will provide a more detailed explanation of the joint 200 and load-supporting portion 300.

[0050] Figure 7 is an enlarged view of part A in Figure 2, and Figure 8 is an enlarged view of part B in Figure 2. Here, Figure 7 is a detailed view of the first connecting part 220 provided at the lower end of the first container body B1, and Figure 8 is a detailed view of the second connecting part 240 provided at the upper end of the second container body B2.

[0051] Referring to Figures 1 to 8, the connecting portion 200 may be provided at at least one end of the upper and lower ends of the container body 100.

[0052] The connecting portion 200 may be provided at only one end of the container body 100, either the upper or lower end. For example, the connecting portion 200 may be provided only at the lower end of the first container body B1 and only at the upper end of the second container body B2.

[0053] Alternatively, the connecting portion 200 may be provided at both the upper and lower ends of the container body 100. For example, the connecting portion 200 may be provided at both the upper and lower ends of the first container body B1 and at both the upper and lower ends of the second container body B2. In this case, the connecting portion 200 provided at the lower end of the second container body B2 may be located on the ground.

[0054] Such a connecting portion 200 may include a first connecting portion 220 provided at the lower end of the container body 100, and a second connecting portion 240 provided at the upper end of the container body 100. In this case, the first connecting portion 220 and the second connecting portion 240 may be provided on both the first container body B1 and the second container body B2 as described above. On the other hand, the first connecting portion 220 described above may also be provided at the lower end of the second container body B2 located on the ground.

[0055] Furthermore, the connecting portion 200 may be provided at the corner of the container body 100. More specifically, the first connecting portion 220 may be provided at the lower end corner of the first container body B1 described above, and the second connecting portion 240 may be provided at the upper end corner of the second container body B2 described above. In this case, the first connecting portion 220 and the second connecting portion 240 may be connected to each other in the vertical direction.

[0056] In this way, the connecting portion 200 is provided at the corner of the container body 100, which is the part of the container body 100 where stress is most concentrated, and can stably connect different container bodies 100 together.

[0057] Furthermore, the connecting portion 200 may be formed to extend further vertically beyond the upper or lower end of the container body 100. More specifically, the first connecting portion 220 may be formed to extend further downward from the lower end of the first container body B1, and the second connecting portion 240 may be formed to extend further upward from the upper end of the second container body B2.

[0058] In this manner, the connecting portion 200 is formed to extend further vertically than the upper or lower end of the container body 100, thereby preventing the regions of the different container bodies 100 from coming into contact with each other, excluding the corners, when two different container bodies 100 are joined together. This minimizes the direct transmission of load to the battery module placed in the storage space of the container body 100.

[0059] Referring further to Figures 1 to 6, the load support portion 300 may be provided at at least one end of the upper and lower ends of the container body 100.

[0060] The load-bearing portion 300 may be provided at only one end of the container body 100, either the upper or lower end. For example, the load-bearing portion 300 may be provided only at the lower end of the first container body B1, and only at the upper end of the second container body B2.

[0061] Alternatively, the load support portion 300 may be provided at both the upper and lower ends of the container body 100. For example, the load support portion 300 may be provided at both the upper and lower ends of the first container body B1 and at both the upper and lower ends of the second container body B2. In this case, the load support portion 300 connected to the lower end of the second container body B2 may be located on the ground.

[0062] Such a load support section 300 may be configured to support the vertical loads of two different container bodies 100.

[0063] More specifically, the load-supporting portion 300 can additionally support the vertical loads of the first container body B1 and the second container body B2 when the first container body B1 and the second container body B2 are connected to each other by the first connecting portion 220 and the second connecting portion 240.

[0064] According to this embodiment of the present invention, when two different container bodies 100 are joined vertically, the vertical load on the container bodies 100 can be stably supported.

[0065] Furthermore, the load-supporting portion 300 may be located between two different connecting portions 200 on at least one of the upper and lower surfaces of the container body 100.

[0066] More specifically, the load support portion 300 may be located between two different first connecting portions 220 on the lower surface of the container body 100. In this case, the load support portion 300 may be located between two different first connecting portions 220 in the longitudinal direction of the container body 100. Although not shown, the load support portion 300 may also be located between two different first connecting portions 220 in the width direction of the container body 100, or between two different first connecting portions 220 located diagonally opposite each other.

[0067] Furthermore, the load-supporting portion 300 may be located between two different second connecting portions 240 on the upper surface of the container body 100. In this case, the load-supporting portion 300 may be located between two different second connecting portions 240 in the longitudinal direction of the container body 100. Although not shown, the load-supporting portion 300 may also be located between two different second connecting portions 240 in the width direction of the container body 100, or between two different second connecting portions 240 located diagonally opposite each other.

[0068] For example, as shown in Figures 1 to 6, since the container body 100 is formed with a length in the longitudinal direction that is longer than the length in the width direction, a higher load-supporting effect can be achieved when the load-supporting portion 300 is located between two different connecting portions 200 in the longitudinal direction of the container body 100. Furthermore, by positioning the load-supporting portion 300 between two different connecting portions 200 in the longitudinal, width, and diagonal directions of the container body 100, the vertical load on the container body 100 can be supported more stably.

[0069] According to this embodiment of the present invention, since the load support portion 300 is located between the connecting portions 200 that connect different container bodies 100 on at least one of the upper and lower surfaces of the container body 100, the vertical load of the container body 100 can be supported more stably.

[0070] In particular, multiple load-bearing portions 300 can be formed between two different connecting portions 200. For example, multiple load-bearing portions 300 can be formed between two different connecting portions 200 in the longitudinal direction of the container body 100. Although not shown, multiple load-bearing portions 300 may also be formed between two different connecting portions 200 in the width direction of the container body 100, or between two different connecting portions 200 located diagonally opposite each other.

[0071] Furthermore, as shown in Figures 1 to 6, since the container body 100 is formed with a length in the longitudinal direction that is longer than the length in the width direction, a higher load-supporting effect can be achieved when the multiple load-supporting parts 300 are located between two different connecting parts 200 in the longitudinal direction of the container body 100. In addition, by having the multiple load-supporting parts 300 located between two different connecting parts 200 in the longitudinal, width, and diagonal directions of the container body 100, the vertical load on the container body 100 can be supported more stably.

[0072] According to this embodiment of the present invention, since multiple load-supporting parts 300 are formed between the connecting parts 200 that connect different container bodies 100, the vertical load of the container body 100 is distributed among the multiple load-supporting parts 300. As a result, the vertical load of the container body 100 can be supported more stably.

[0073] Furthermore, the load-supporting portion 300 may be located between two different connecting portions 200 at the edge of the container body 100.

[0074] More specifically, the load-bearing portion 300 may be located between two different connecting portions 200 at the longitudinal edge of the container body 100. Although not shown, the load-bearing portion 300 may also be located between two different connecting portions 200 at the widthwise edge of the container body 100.

[0075] According to this embodiment of the present invention, at the edge of the container body 100, which is vulnerable to vertical loads, the load support portion 300 is located between two different connecting portions 200, thereby enabling more stable support of vertical loads on the container body 100.

[0076] Furthermore, the load support portion 300 is located at the edge of the container body 100, and the edge of the container body 100 Chuo Line It can be positioned symmetrically on both sides with respect to a reference point.

[0077] More specifically, the load support portion 300 is located at the longitudinal edge of the container body 100, in the width direction. Chuo Line It can be positioned symmetrically on both sides in the longitudinal direction with respect to a reference point. Also, although not shown in the figures, the load support portion 300 is located at the widthwise edge of the container body 100, in the longitudinal direction. Chuo Line It can be positioned symmetrically on both sides in the width direction with respect to the reference point.

[0078] According to this embodiment of the present invention, the vertical load of the container body 100 can be uniformly distributed to the load support section 300. This makes it possible to support the vertical load of the container body 100 more stably.

[0079] Figure 9 is an enlarged view of section C in Figure 2, Figure 10 is a detailed view of the first support bracket 320 in Figure 9, Figure 11 is an enlarged view of section D in Figure 2, and Figure 12 is a detailed view of the second support bracket 340 in Figure 11.

[0080] Referring to Figures 1 to 6 and Figures 9 to 12, the load support portion 300 may include a first support bracket 320 and a second support bracket 340.

[0081] The first support bracket 320 may be provided at the lower end of the container body 100. For example, the first support bracket 320 may be provided at the lower end of the first container body B1.

[0082] The second support bracket 340 may be provided at the upper end of the container body 100. For example, the second support bracket 340 may be provided at the upper end of the second container body B2. The second support bracket 340 may be configured to be connectable to the first support bracket 320 in the vertical direction.

[0083] The first support bracket 320 and the second support bracket 340 may be configured to support the vertical loads of the first container body B1 and the second container body B2.

[0084] In this case, the first support bracket 320 and the second support bracket 340 may be provided on both the first container body B1 and the second container body B2 as described above. On the other hand, the first support bracket 320 may also be provided on the lower end of the second container body B2 which is located on the ground.

[0085] Figure 13 is an enlarged view of section L in Figure 1, Figure 14 is a detailed drawing of the connecting member 400 in Figure 13, and Figure 15 is a diagram illustrating the state in which the load support section 300 supports the loads of two different container bodies 100.

[0086] Referring to Figures 13 to 15, the battery container 10 may further include a connecting member 400 configured to connect two distinct connecting portions 200 in the vertical direction. For example, the connecting member 400 may be a type of twist lock and be made of a high-strength metal material.

[0087] The connecting member 400 may include a connecting body 420 and a side portion 440.

[0088] The connecting body 420 can be positioned vertically inside two different connecting parts 200. That is, the connecting body 420 can be positioned vertically inside the first connecting part 220 provided in the first container body B1 and the second connecting part 240 provided in the second container body B2.

[0089] The side portions 440 are formed on both sides of the connecting body 420 and can be positioned between two different connecting portions 200 in the vertical direction. That is, the side portions 440 can be positioned between the first connecting portion 220 and the second connecting portion 240 in the vertical direction.

[0090] The more detailed configuration of the connecting member 400 described above will be explained in more detail later through related explanations.

[0091] The configuration of the side portion 440 of the connecting member 400 prevents the two different connecting portions 200, which are connected to the corners of the container body 100 where stress is most concentrated, from directly contacting each other. This makes it possible to stably connect two different container bodies 100 together.

[0092] On the other hand, when the side portion 440 is positioned between two different connecting portions 200, downward deflection may occur in the region of the first container body B1 excluding the area between the two different connecting portions 200. In this case, the first support bracket 320 and the second support bracket 340 of the present invention may be configured to support the vertical loads of the first container body B1 and the second container body B2 by being connected to each other in the vertical direction.

[0093] According to this embodiment of the present invention, when two different container bodies 100 are joined vertically, deformation of the container body 100 can be minimized and the vertical load on the container body 100 can be stably supported.

[0094] Referring further to Figures 9 to 15, the first support bracket 320 may include a first side bracket 322, a first coupling bracket 324, and a first base bracket 326.

[0095] The first side bracket 322 can be connected to the side surface of the lower end of the container body 100. In this way, the first support bracket 320 can be more stably connected to the container body 100 by having the configuration of the first side bracket 322 that is connected to the side surface of the container body 100. As a result, the first support bracket 320 can more stably support the vertical load of the container body 100.

[0096] The first coupling bracket 324 may be configured to be coupled to the lower part of the first side bracket 322 and to be coupled to the second support bracket 340 in the vertical direction. In this way, the first support bracket 320 can be coupled to the second support bracket 340 more stably in the vertical direction by having the first coupling bracket 324 coupled to the lower part of the first side bracket 322.

[0097] The first base bracket 326 may be connected to the first coupling bracket 324 and configured to support the lower surface of the container body 100. In this way, the first support bracket 320 can more stably support the vertical load of the container body 100 by including the first base bracket 326 configured to support the lower surface of the container body 100.

[0098] Furthermore, the second support bracket 340 may include a second side bracket 342, a second coupling bracket 344, and a second base bracket 346.

[0099] The second side bracket 342 can be connected to the side surface of the upper end of the container body 100. In this way, the second support bracket 340 can be more stably connected to the container body 100 by having the configuration of the second side bracket 342 that is connected to the side surface of the container body 100. As a result, the second support bracket 340 can more stably support the vertical load of the container body 100.

[0100] The second coupling bracket 344 is coupled to the upper part of the second side bracket 342 and can be configured to be coupled to the first coupling bracket 324 in the vertical direction. For example, the coupling of the first coupling bracket 324 and the second coupling bracket 344 can be performed by a separate coupling member (not shown) connecting a first hole H1 formed in the first coupling bracket 324 and a second hole H2 formed in the second coupling bracket 344.

[0101] Thus, the second support bracket 340, by having the second connecting bracket 344 coupled to the upper part of the second side bracket 342, can be more stably connected to the first support bracket 320 in the vertical direction. Furthermore, the first support bracket 320 and the second support bracket 340 are configured with a first connecting bracket 324 and a second connecting bracket 344 that are easily connected to each other in the vertical direction, allowing different container bodies 100 to be easily connected to each other.

[0102] The second base bracket 346 may be connected to the second connecting bracket 344 and configured to support the upper surface of the container body 100. In this way, the second support bracket 340 can more stably support the vertical load on the container body 100 by including the second base bracket 346 configured to support the upper surface of the container body 100.

[0103] On the other hand, when the side portion 440 is positioned between two different connecting portions 200, the distance between the lower end of the first container body B1 and the upper end of the second container body B2 may be the same as the sum of the heights of the first base bracket 326 and the second base bracket 346. This minimizes deformation of the container body 100 and allows for stable support of vertical loads on the container body 100.

[0104] Figure 16 is an enlarged view of section E in Figure 2, Figure 17 is a detailed view of the support plate 500 in Figure 16, Figure 18 is a detailed view of the fixing member 600 in Figure 16, and Figure 19 is a diagram illustrating the relationship between the support plate 500 and the load support section 300 in Figure 16.

[0105] Referring to Figures 9 to 12 and Figures 16 to 19, the load support section 300 can be configured to support the container body 100 placed on the ground.

[0106] More specifically, the second container body B2 may also be located on the ground. In this case, the first connecting part 220 of the connecting part 200 may be provided at the lower end of the second container body B2 located on the ground. Also, the first support bracket 320 of the load support part 300 may be provided at the lower end of the second container body B2 located on the ground.

[0107] In particular, the lower ends of the first coupling bracket 324 and the first base bracket 326 of the first support bracket 320 may be located on the same horizontal plane as the lower end of the first coupling portion 220. The first support bracket 320 can be fixed to the ground by inserting a separate coupling member (not shown) into the ground through the first hole H1 of the first coupling bracket 324. This makes it possible to fix the second container body B2, which is located on the ground, to the ground.

[0108] According to this embodiment of the present invention, the load support portion 300 stably supports the container body 100 placed on the ground, thereby enabling stable stacking of the container bodies 100.

[0109] On the other hand, the battery container 10 may further include a support plate 500. Such a support plate 500 may be configured to support the container body 100 which is placed on the ground.

[0110] In this case, the support plate 500 can support the lower end of the container body 100 which is placed on the ground. More specifically, the support plate 500 can support the lower end of the second container body B2 which is located on the ground.

[0111] In particular, the support plate 500 may be directly connected to the first joint 220 or positioned adjacent to the first joint 220. This configuration of the support plate 500 makes it possible to additionally secure vertical support force near the corners of the container body 100.

[0112] Furthermore, the lower end of the support plate 500 may be located on the same horizontal plane as the lower end of the first connecting portion 220 and the lower ends of the first connecting bracket 324 and the first base bracket 326 of the first support bracket 320.

[0113] According to this embodiment of the present invention, by configuring the container body 100, which is placed on the ground, to be additionally supported through the support plate 500 in addition to the load support section 300, it is possible to guide a more stable stacking of the container body 100.

[0114] Referring further to Figures 16 to 19, the battery container 10 may further include a fixing member 600.

[0115] The fixing member 600 may be configured to connect the support plate 500 and the connecting portion 200. In this configuration, the support plate 500 and the connecting portion 200 are connected by the fixing member 600, which makes the vertical support force near the corners of the container body 100 more stable.

[0116] Furthermore, the fixing member 600 may be configured to fix the container body 100 to the ground. More specifically, the fixing member 600 can fix the second container body B2, which is located on the ground, to the ground. For example, a separate connecting member (not shown) can be inserted into the ground through a fixing hole 620 formed in the fixing member 600. In this way, the fixing member 600 can fix the second container body B2, which is located on the ground, to the ground.

[0117] In this case, the lower end of the fixing member 600 may be located on the same horizontal plane as the lower end of the first connecting portion 220 and the lower end of the support plate 500. Furthermore, the lower end of the fixing member 600 may be located on the same horizontal plane as the lower ends of the first connecting bracket 324 and the first base bracket 326 of the first support bracket 320.

[0118] According to this embodiment of the present invention, not only can the container body 100 be guided to a more stable stacking through the fixing member 600, but additional fixing force of the container body 100 to the ground can also be secured.

[0119] Figures 20 to 23 show a battery container according to another embodiment of the present invention. Hereafter, only some of the components of the battery container described above will be shown in Figures 20 to 23.

[0120] Referring to Figure 20, a battery container 12 according to a second embodiment of the present invention is shown. Since the battery container 12 according to this embodiment is similar to the battery container 10 of the above-described embodiment, redundant explanations of substantially identical or similar components to those of the above-described embodiment will be omitted, and the following explanation will focus on the differences from the above-described embodiment.

[0121] Referring to Figure 20, the battery container 12 may include a container body 100 and a load support section 300.

[0122] In the battery container 12 according to this embodiment, the container body 100 may further include a securing groove 110, unlike the embodiment described above. Such a securing groove 110 may be formed at at least one end of the upper and lower ends of the container body 100. The load support portion 300 may also be located in the securing groove 110.

[0123] For example, at least one anchoring groove 110 may be formed at the upper end of the second container body B2 described above, along the longitudinal direction of the second container body B2. Such an anchoring groove 110 may be formed recessed inward in the width direction of the second container body B2.

[0124] Furthermore, the second coupling bracket 344 of the second support bracket 340 may be positioned in the anchoring groove 110. The second base bracket 346 of the second support bracket 340 may be connected to the second coupling bracket 344 and configured to support the upper surface of the second container body B2. On the other hand, in the battery container 12 according to this embodiment, the container body 100 does not have to be equipped with the second side bracket 342, unlike the embodiment described above.

[0125] According to this embodiment of the battery container 12, the load support section 300 can be configured more simply, and the load support section 300 can more stably support the vertical load on the container body 100.

[0126] Referring to Figure 21, a battery container 14 according to a third embodiment of the present invention is shown. Since the battery container 14 according to this embodiment is similar to the battery container 10 of the above-described embodiment, redundant explanations of substantially identical or similar components to those of the above-described embodiment will be omitted, and the following explanation will focus on the differences from the above-described embodiment.

[0127] Referring to Figure 21, the battery container 14 may include a container body 100 and a load support section 300.

[0128] In the battery container 14 according to this embodiment, the anchoring groove 110 may further include a guide groove 112. The guide groove 112 may be formed recessed from the anchoring groove 110 by a certain depth in the vertical direction. A part of the load support portion 300 may be inserted into the guide groove 112.

[0129] For example, the second coupling bracket 344 of the second support bracket 340 may be positioned in the anchoring groove 110. A projection T having a shape corresponding to the guide groove 112 may be formed on one side of the second coupling bracket 344. Such a projection T can be inserted into the guide groove 112.

[0130] According to this embodiment of the battery container 14, the load support section 300 can be stably positioned by the fixing groove 110, and the load support section 300 can more stably support the vertical load of the container body 100.

[0131] Referring to Figure 22, a battery container 16 according to a fourth embodiment of the present invention is shown. Since the battery container 16 according to this embodiment is similar to the battery container 10 of the above-described embodiment, redundant explanations of substantially identical or similar components to those of the above-described embodiment will be omitted, and the following explanation will focus on the differences from the above-described embodiment.

[0132] Referring to Figure 22, the battery container 16 may include a container body 100 and a load support section 300.

[0133] In the battery container 16 according to this embodiment, the container body 100 may further include a slide guide 120, unlike the embodiment described above. Such a slide guide 120 may be formed at least one end of the upper and lower ends of the container body 100. Such a slide guide 120 may be formed in the form of a guide rail.

[0134] Furthermore, multiple load-bearing units 300 may be arranged on the slide guide 120 and configured to move on the container body 100. Each load-bearing unit 300 may be fixed at a specific position on the slide guide 120 via a separate stopper (not shown).

[0135] For example, a slide guide 120 may be formed at the upper end of the second container body B2 described above, along the longitudinal direction of the second container body B2.

[0136] Furthermore, the second coupling bracket 344 of the second support bracket 340 can be coupled onto the slide guide 120. In this case, a groove W having a shape corresponding to the slide guide 120 may be formed on one side of the second coupling bracket 344. The second coupling bracket 344 can be coupled to the slide guide 120 through the groove W.

[0137] The second coupling bracket 344 is configured to move along the slide guide 120 on the second container body B2, and each second coupling bracket 344 can be fixed at a specific position on the slide guide 120 through the stopper.

[0138] On the other hand, in the battery container 16 according to this embodiment, the container body 100 does not need to be equipped with the second side bracket 342.

[0139] According to this embodiment of the battery container 16, since the load support section 300 can move freely on the container body 100 via the slide guide 120, multiple load support sections 300 can be placed at any position on the container body 100. This allows for more stable support of the vertical load on the container body 100.

[0140] Referring to Figure 23, a battery container 18 according to a fifth embodiment of the present invention is shown. Since the battery container 18 according to this embodiment is similar to the battery container 10 of the above-described embodiment, redundant explanations of substantially identical or similar components to those of the above-described embodiment will be omitted, and the following explanation will focus on the differences from the above-described embodiment.

[0141] Referring to Figures 7, 8, and 23, the battery container 18 may include a container body 100 and a connecting part 200.

[0142] Here, the connecting portion 200 may further include a side hole S. The side hole S may be formed vertically on the side surface of the connecting portion 200.

[0143] Furthermore, unlike the embodiment described above, the battery container 18 according to this embodiment may further include a reinforcing member 700.

[0144] The reinforcing member 700 can connect the side holes S of two different connecting portions 200 in the vertical direction.

[0145] For example, the reinforcing member 700 can connect vertically between a side hole S formed on the side of a first connecting portion 220 connected to a first container body B1 and a side hole S formed on the side of a second connecting portion 240 connected to a second container body B2. As an example, the reinforcing member 700 may be an elastic material and may be formed in the form of a clip so that it can be easily attached to and detached from the side hole S.

[0146] According to this embodiment of the battery container 18, not only can additional vertical support force be secured at the corners of the container body 100, but it can also guide more stable stacking of the container body 100.

[0147] As described above, according to the embodiment of the present invention, when different container bodies 100 are joined in the vertical direction, the vertical load on the container body 100 can be stably supported.

[0148] Furthermore, according to the embodiment of the present invention, since the container bodies 100 can be stably stacked on the same ground, the energy density of the battery containers 10, 12, 14, 16, and 18 can be improved for a limited amount of ground.

[0149] Referring further to Figures 13 and 14, the connecting member 400 may further include a locking portion 460 and a handle portion 480.

[0150] The locking portion 460 may be configured to fix the connecting body 420 of the connecting member 400 inside the connecting portion 200.

[0151] The handle portion 480 is connected to the lock portion 460 and may be provided in the shape of a long rod. The handle portion 480 may be configured to rotate the lock portion 460 relative to the connecting body 420 by moving on a horizontal plane inside the elongated hole LH formed on one side of the connecting body 420.

[0152] In other words, the handle portion 480 can act to rotate the locking portion 460 relative to the connecting body 420, thereby fixing the connecting body 420 inside the connecting portion 200 through the locking portion 460.

[0153] More specifically, the locking portion 460 may include a first locking member 462, a second locking member 464, and a rotating shaft 466.

[0154] The first locking member 462 may be positioned on the upper part of the connecting body 420.

[0155] The second locking member 464 may be positioned at the lower part of the connecting body 420.

[0156] The rotating shaft 466 is formed inside the connecting body 420 and can connect the first locking member 462 and the second locking member 464.

[0157] The aforementioned joint portion 200 may further include a through hole G. The through hole G is formed on one side of the joint portion 200 in the vertical direction and through which the first locking member 462 or the second locking member 464 can pass.

[0158] Furthermore, the rotating shaft 466 may be connected to the handle portion 480 and configured to rotate relative to the connecting body 420 by the drive of the handle portion 480. In this case, the first locking member 462 and the second locking member 464 may rotate on the horizontal plane by the rotation of the rotating shaft 466.

[0159] The rotation of the rotating shaft 466 causes the first locking member 462 and the second locking member 464 to switch from state (a) to (b) in Figure 14, and they can be configured to be positioned inside the coupling portion 200 in a direction perpendicular to the through hole G. In this state, the first locking member 462 and the second locking member 464 are prevented from passing through the through hole G. As a result, the connecting body 420 is fixed inside the coupling portion 200.

[0160] On the other hand, at least one of the aforementioned battery containers 10, 12, 14, 16, and 18 can constitute the energy storage system 1. As described above, the energy storage system 1 can be configured as a link group with a certain number of battery containers 10 and control containers EL.

[0161] Referring further to Figure 1, an exemplary configuration is provided, consisting of four container bodies 100 and two control containers EL. In one embodiment, two container bodies 100 and one control container EL may constitute one link group. However, it is not limited to this configuration; if three or more container bodies 100 are stacked, three or more container bodies 100 and one control container EL may also constitute one link group.

[0162] On the other hand, in each link group, the container body 100 located on the ground can be connected to a single control container EL. The control container EL can perform overall control and diagnostics on the stacked container bodies 100.

[0163] Furthermore, the control container EL may be equipped with DC parts, AC parts, and BSC parts, etc., for controlling the battery container. On the other hand, each control container EL can be connected to a PCS.

[0164] Although the present invention has been described above with reference to limited embodiments and drawings, it goes without saying that the present invention is not limited thereto, and that various modifications and variations can be made by persons with ordinary skill in the art to which the present invention belongs, within the equivalent scope of the technical concept and claims of the present invention.

[0165] On the other hand, while terms such as up, down, left, right, front, and back are used in this specification to indicate direction, these terms are used for convenience of explanation, and it is obvious to those skilled in the art that they can change depending on the position of the object being examined, the position of the observer, etc. [Explanation of Symbols]

[0166] 1: Energy storage systems 10, 12, 14, 16, 18: Battery containers 100: Container body 200:Joining part 300: Load support part 320: First support bracket 322: First side bracket 324: First coupling bracket 326: First base bracket 340: Second support bracket 342: Second side bracket 344: Second coupling bracket 346: Second base bracket 400: Connecting member 500: Support plate 600: Fixing member

Claims

1. The container body and A connecting part configured to join different container bodies together, A load support section configured to support the vertical load of the container body, Includes, A battery container in which different container bodies are connected vertically, and multiple battery modules are housed inside the container bodies, The aforementioned connecting portion is provided at at least one end of the upper and lower ends of the container body, and is provided at the corner of the container body. The load-supporting portion is provided at at least one end of the upper and lower ends of the container body so as to be located between two different connecting portions, and is configured to support the vertical load of the two different container bodies. The aforementioned load-supporting portion is A first support bracket is provided at the lower end of the container body, A second support bracket is provided at the upper end of the container body and is configured to be connectable to the first support bracket in the vertical direction, A battery container equipped with this feature.

2. The battery container according to claim 1, wherein the connecting portion is formed to extend further in the vertical direction than the upper or lower end of the container body.

3. The first support bracket is, A first side bracket is connected to the side surface of the lower end of the container body, A first connecting bracket is connected to the lower part of the first side bracket and configured to be connectable to the second support bracket in the vertical direction, The battery container according to claim 1, further comprising: a first base bracket connected to the first coupling bracket and configured to support the lower surface of the container body.

4. The second support bracket is, A second side bracket is attached to the side surface of the upper end of the container body, A second connecting bracket is connected to the upper part of the second side bracket and configured to be connectable to the first connecting bracket in the vertical direction, The battery container according to claim 3, further comprising: a second base bracket connected to the second coupling bracket and configured to support the upper surface of the container body.

5. The battery container according to claim 1, wherein the load-supporting portion is located between two different connecting portions on at least one of the upper and lower surfaces of the container body.

6. The battery container according to claim 1, wherein a plurality of load-supporting portions are formed between two different connecting portions.

7. The battery container according to claim 1, wherein the load-supporting portion is located at the edge of the container body between two different connecting portions.

8. The battery container according to claim 1, wherein the load-bearing portion is configured to support the container body placed on the ground.

9. The battery container according to claim 1, further comprising a support plate configured to support a container body placed on the ground.

10. The present invention further includes a fixing member configured to connect the support plate and the connecting portion, The battery container according to claim 9, wherein the fixing member is configured to fix the container body to the ground.

11. An energy storage system comprising at least one battery container according to any one of claims 1 to 10.

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