Battery pack

Abstract

A battery pack according to an embodiment of the present invention may include a first battery module having a first corner formed by two side plates, a processing unit having a second corner formed by the two side plates, electrically connected to the first battery module, and controlling charging and discharging of the battery module, and a first coupling member having one side fastened to the first corner and the other side fastened to the second corner.

Description

[Technical Field]

[0001] This application claims priority to Korean Patent Application No. 10-2021-0188568, filed on December 27, 2021, the entire contents of which are incorporated herein by reference in their entirety. The present invention relates to a battery pack. [Background technology]

[0002] Currently, commercially available secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium secondary batteries. Of these, lithium secondary batteries are attracting attention due to their advantages over nickel-based secondary batteries, such as almost no memory effect, freedom in charging and discharging, extremely low self-discharge rate, and high energy density.

[0003] Such lithium secondary batteries mainly use lithium-based oxides and carbon materials as the positive and negative electrode active materials, respectively, and include an electrode assembly in which a separator is sandwiched between positive and negative electrode plates coated with the positive and negative electrode active materials, and an exterior material, such as a battery case, in which the electrode assembly is enclosed together with an electrolyte.

[0004] Generally, lithium secondary batteries are classified into can-type secondary batteries in which an electrode assembly is incorporated into a metal can and pouch-type secondary batteries in which an electrode assembly is incorporated into a pouch made of an aluminum laminate sheet, depending on the shape of the exterior material.

[0005] These secondary batteries are widely used not only in small devices such as portable electronic devices but also in medium- to large-sized devices such as electric vehicles and energy storage systems (ESS), and their usage is rapidly increasing. Furthermore, residential energy storage systems that store and supply electricity for use in buildings such as homes and buildings have become widely used recently. The core of these residential energy storage systems is the battery pack.

[0006] Various battery packs, including those used in residential ESSs, include multiple battery cells (secondary batteries) to increase capacity and / or output. In particular, there is a need for an ESS that allows the battery pack configuration to be flexibly changed to meet various customer needs. Furthermore, there is a need for an ESS that can be reshaped so that it can be installed under various space constraints. Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention aims to solve these and other problems.

[0008] Another object of the present invention is to provide a battery pack that can be configured with a variety of battery modules.

[0009] It is yet another object of the present invention to provide a battery pack that can be configured with a variety of processing units.

[0010] It is yet another object of the present invention to provide a battery pack whose appearance can be configured in various forms.

[0011] Yet another object of the present invention is to provide a battery pack including a coupling member capable of coupling adjacent battery modules or adjacent processing units and battery modules.

[0012] Yet another object of the present invention may be to provide a battery pack including a corner cover capable of covering a corner between an adjacent battery module or between an adjacent processing unit and a battery module.

[0013] Yet another object of the present invention is to provide a battery pack that can improve productivity and assembly efficiency by standardizing parts. [Means for solving the problem]

[0014] To achieve the above object, a battery pack according to one aspect of the present invention may include: a first battery module having a first corner formed by two side plates; a processing unit having a second corner formed by the two side plates, electrically connected to the first battery module, and controlling charging and discharging of the battery module; and a first connecting member having one side fastened to the first corner and the other side fastened to the second corner.

[0015] Also, the first battery module may be located on one side of the processing unit, and the first corner and the second corner may be adjacent to each other.

[0016] Furthermore, the battery pack may further include: a second battery module located on the other side of the processing unit and electrically connected to the processing unit; and a second connecting member having one side fastened to the second battery module and the other side fastened to the processing unit.

[0017] Furthermore, the battery pack may further include a double-corner cover that is hook-coupled to the first coupling member and covers the first corner and the second corner.

[0018] Furthermore, the battery pack may further include a cable passing through a first opening formed in the first corner and a second opening formed in the second corner.

[0019] Furthermore, the double corner cover may cover the cables.

[0020] Furthermore, the first battery module may be located behind the processing unit, and the first corner and the second corner may be adjacent to each other.

[0021] Furthermore, the battery pack may further include: a first single corner cover hooked to the first connecting member and covering the second corner; and a second single corner cover hooked to the first connecting member and covering the second corner.

[0022] Furthermore, the battery pack may further include a cable passing through a first opening formed in the first corner and a second opening formed in the second corner.

[0023] Furthermore, the first single corner cover and the second single corner cover may cover the cable.

[0024] Furthermore, the battery pack may further include a second battery module having a third corner formed by two side plates and positioned rearward of the first battery module; and a second connecting member having one side fastened to the second corner and the other side fastened to the third corner.

[0025] Furthermore, the battery pack may further include a third single corner cover hook-coupled to the second coupling member and covering the third corner.

[0026] To achieve the above object, an energy storage system according to one aspect of the present invention includes a battery pack according to one aspect of the present invention. [Effects of the Invention]

[0027] According to at least one embodiment of the present invention, a battery pack capable of being configured with a variety of numbers of battery modules can be provided.

[0028] According to at least one embodiment of the present invention, a battery pack can be provided that can be configured with a variety of numbers of processing units.

[0029] According to at least one of the embodiments of the present invention, a battery pack can be provided whose appearance can be configured in various forms.

[0030] According to at least one embodiment of the present invention, a battery pack can be provided that includes a coupling member that can couple adjacent battery modules or adjacent processing units to a battery module.

[0031] According to at least one embodiment of the present invention, a battery pack can be provided that includes a corner cover that can cover a corner between an adjacent battery module or between an adjacent processing unit and a battery module.

[0032] According to at least one of the embodiments of the present invention, it is possible to provide a battery pack that can improve productivity and assembly efficiency by standardizing parts.

[0033] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further understand the technical concepts of the present invention together with the contents of the invention described below. Therefore, the present invention should not be interpreted as being limited to the matters depicted in the drawings. [Brief explanation of the drawings]

[0034] [Figure 1] 1 is a perspective view showing a battery pack according to an embodiment of the present invention; [Figure 2] 1 is an exploded perspective view of a partial configuration of a battery pack according to an embodiment of the present invention. [Figure 3] 1 is a perspective view showing a coupling member of a battery pack according to an embodiment of the present invention; [Figure 4]1 is a perspective view showing a coupling member of a battery pack according to an embodiment of the present invention; [Figure 5] FIG. 3 is an enlarged view of a portion A in FIG. 2. [Figure 6] 1 is a view showing a corner cover of a battery pack according to an embodiment of the present invention as viewed from the outside. [Figure 7] 1 is a view showing a corner cover of a battery pack according to an embodiment of the present invention as viewed from the inside. [Figure 8] 10A and 10B are views showing a state in which corner covers of a battery pack according to an embodiment of the present invention are coupled to a battery module and a processing unit; [Figure 9] 10A and 10B are views illustrating a state in which a corner cover of a battery pack is coupled to a coupling member according to an embodiment of the present invention; [Figure 10] FIG. 2 is an enlarged view of a corner cover of the battery pack according to an embodiment of the present invention. [Figure 11] 1 is a perspective view showing a corner of a battery pack according to an embodiment of the present invention; [Figure 12] 1 is a perspective view showing a corner cover of a battery pack according to an embodiment of the present invention; [Figure 13] 1 is a perspective view showing the inside of a corner cover of a battery pack according to an embodiment of the present invention. FIG. [Figure 14] 10A and 10B are diagrams illustrating the connection between a corner cover and a connecting member of a battery pack according to an embodiment of the present invention. [Figure 15] 10A and 10B are diagrams illustrating corner covers coupled to corners of a battery pack according to an embodiment of the present invention. [Figure 16] 16 is a diagram showing a part of the cross-sectional configuration taken along the cutting line BB' in FIG. 15. FIG. [Figure 17] 16 is a diagram showing a part of the cross-sectional configuration taken along the cutting line CC' in FIG. 15. FIG. [Figure 18] 1 is a rear perspective view of a battery pack according to an embodiment of the present invention; [Figure 19]1A and 1B are diagrams illustrating a wall mount bracket for a battery pack according to one embodiment of the present invention. [Figure 20] 1 is a perspective view showing a battery pack according to an embodiment of the present invention; [Figure 21] 1 is an exploded perspective view of a partial configuration of a battery pack according to an embodiment of the present invention; [Figure 22] 1 is an enlarged view of a partial configuration of a battery pack according to an embodiment of the present invention. [Figure 23] 2 is an exploded enlarged view of a partial configuration of a battery pack according to an embodiment of the present invention. FIG. [Figure 24] 23 is a diagram showing a part of the cross-sectional configuration taken along the cutting line DD' in FIG. 22. FIG. [Figure 25] 23 is a diagram showing a part of the cross-sectional configuration taken along the cutting line EE' in FIG. 22. FIG. [Figure 26] 1A and 1B are diagrams illustrating corner covers of a battery pack according to an embodiment of the present invention. [Figure 27] 1A and 1B are diagrams illustrating corner covers of a battery pack according to an embodiment of the present invention. [Figure 28] 1A and 1B are diagrams illustrating corner covers of a battery pack according to an embodiment of the present invention. [Figure 29] 1A and 1B show corner covers and mounting brackets of a battery pack according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0035] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms and words used in the specification and claims should not be construed as being limited to their ordinary or dictionary meanings, but should 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 explain the invention.

[0036] Therefore, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent the entire technical idea of ​​the present invention, and that there may be various equivalents and modifications that can be substituted therefor at the time of this application.

[0037] In the following description, terms such as "first" and "second" may be used. These terms are used to distinguish a component from other components, and do not limit the nature, order, or sequence of the components.

[0038] Fig. 1 is a perspective view showing a battery pack according to an embodiment of the present invention. Fig. 2 is an exploded perspective view of a portion of a battery pack according to an embodiment of the present invention. Figs. 3 and 4 are perspective views showing a coupling member of a battery pack according to an embodiment of the present invention. Referring to Figs. 1 to 4, a battery pack according to an embodiment of the present invention may include a battery module 100, a processing unit 200, and a first coupling member 600.

[0039] The battery module 100 may include a first corner 111 formed by two side plates and a first opening 112 formed in the first corner 111. The battery module 100 may have a rectangular parallelepiped shape. The housing 110 may form the exterior of the battery module 100. The housing 110 of the battery module 100 may include a front plate and four side plates. The four side plates of the housing 110 may form four corners 111. The four corners may be formed in a chamfered shape. Alternatively, the corner 111 may be a plate connecting two side plates. Alternatively, the corner 111 may be formed by two side plates. The corner 111 may include an opening 112. The opening 112 may be open in the forward or X-axis direction. The four corners 111 may have substantially the same shape. The battery module 100 may include a plurality of battery cells therein. In this case, the battery cells may be secondary batteries. The battery module 100 can charge the battery cells with power and discharge the power of the battery cells to the outside. Depending on the required amount of power and output, a battery pack may be composed of multiple battery modules 100. For example, as shown in FIG. 1, the battery pack may include three battery modules 100.

[0040] The processing unit 200 is located on one side of the battery module 100 and controls charging and discharging of the battery module 100. The processing unit 200 may have a second corner 211 adjacent to the first corner 111 and a second opening 212 formed in the second corner 211. The processing unit 200 may have a rectangular parallelepiped shape. The housing 210 may form the exterior of the processing unit 200. The appearance or size of the processing unit 200 and the battery module 100 may be very similar or substantially the same. The housing 210 of the processing unit 200 may include a front plate and four side plates. The four side plates of the housing 210 may form four corners 211. The four corners 211 may be formed in a chamfered shape. Alternatively, the corners 211 may be plates connecting two side plates. Alternatively, the corners 211 may be formed by two side plates. The corners 211 may have openings 212. The openings 212 may be shaped to open forward or in the X-axis direction. The four corners 211 may have substantially the same shape. The battery module 100 may include multiple battery cells therein. In this case, the battery cells may be secondary batteries. The processing unit 200 may be electrically connected, coupled, or coupled to multiple battery modules 100. The processing unit 200 may control charging and discharging of the battery modules 100. The processing unit 200 may also detect and acquire status information of the battery modules 100. A battery pack may be configured to include multiple processing units 200 for controlling multiple battery modules 100.

[0041] 1 , a battery pack may include three battery modules 100 and one processing unit 200. The three battery modules 100 and the processing unit 200 may be electrically connected to each other. The processing unit 200 may control the charging and discharging of the three battery modules 100 and may obtain or sense status information such as the voltage or temperature of the three battery modules 100.

[0042] Each corner 111 of the battery module 100 and each corner 211 of the processing unit 200 may be formed in substantially the same shape.

[0043] The first coupling member 600 may be configured to have one side fastened to the first corner 111 and the other side fastened to the second corner 211 .

[0044] One side of the coupling member 600 may be fastened to the first corner 111 by a fastening member S. The other side of the coupling member 600 may be fastened to the second corner 211 by a fastening member S. A plurality of coupling members 600 may be configured. For example, referring to FIG. 3 , two coupling members 600 may be fastened to the battery module 100 and the processing unit 200. The two coupling members 600 may physically connect, couple, or fasten the battery module 100 and the processing unit 200.

[0045] The coupling member 600 may physically connect, couple, or fasten two adjacent battery modules 100. The coupling member 600 may also physically connect, couple, or fasten two adjacent processing units 200. The coupling member 600 may also physically connect, couple, or fasten two adjacent battery modules 100 and processing units 200.

[0046] 3 and 4 , the connecting member 600 may include a first part 610, a second part 620, a third part 630, a fourth part 640, and a fifth part 650. The second part 620 may extend from the first part 610 in the +Z-axis direction and then bend to extend in the +X-axis direction. The third part 630 may extend from the second part 620 in the +X-axis direction. The fourth part 640 may extend from the third part 630 in the +X-axis direction and then bend to extend in the −Z-axis direction. The fifth part 650 may extend from the fourth part 640 in the +X-axis direction. A second hole 603 may be formed in the first part 610. A hole 601 may be formed in each of the second part 620 and the fourth part 640. A hole 602 may be formed in the fifth part 650. The hole 602 may be an elongated hole extending along the X-axis direction. The hole 602 may be shaped to open in the +X axis direction.

[0047] According to this configuration of the present invention, the connecting member 600 can stably connect, couple, or fasten the battery module 100 and the processing unit 200 that constitute the battery pack.

[0048] According to this configuration of the present invention, the battery pack may include one or more battery modules 100 and one or more processing units 200 in various combinations. The positional relationship and coupling relationship between the battery modules 100 and the processing units 200 constituting the battery pack may be configured in various ways. As a result, the battery pack may be configured to flexibly respond to various required power amounts and outputs. Furthermore, by configuring the battery pack to have a diversely deformable outer shape, the battery pack may be freed from installation space constraints.

[0049] 1 and 2 , a battery pack according to an embodiment of the present invention may include a double-corner cover 500. The corner cover 500 may cover the first opening 112 and the second opening 212. The corner cover 500 may also be referred to as a double-corner cover 500. The double-corner cover 500 may be disposed in a portion where a corner 111 of a battery module 100 and a corner 211 of a processing unit 200 are adjacent to each other. Alternatively, the double-corner cover 500 may be disposed in a portion where two corners 111, 211 are adjacent to each other. In this case, the two adjacent corners 111, 211 may be the corners 111 of the battery module 100 and the corners 211 of the processing unit 200, respectively. Alternatively, the two adjacent corners 111 may be the corners 111 of adjacent battery modules 100, respectively. Alternatively, the two adjacent corners 211 may be the corners 211 of adjacent processing units 200. For example, referring to Figures 1 and 2, the battery pack may include two double corner covers 500 that cover the corners 111, 211 formed by the processing unit 200 and adjacent battery modules 100, and may include two double corner covers 500 that cover the corner 111 formed by two adjacent battery modules 100.

[0050] Furthermore, according to this configuration of the present invention, the double corner cover 500 can protect the internal structure of the battery pack by covering the corners 111 of adjacent battery modules 100, or the corners 211 of adjacent processing units 200, or the corners 211 of adjacent battery modules 100 and processing units 200. The battery modules 100 and processing units 200 may have openings 112, 212 for connecting to external structures. If the openings 112, 212 are exposed to the outside, the interior may be damaged by the entry of foreign objects. The double corner cover 500 can protect the interior of the battery modules 100 or processing units 200 by covering the openings 112, 212. This can improve the safety and lifespan of the battery pack.

[0051] Furthermore, according to this configuration of the present invention, when the battery pack is installed outdoors, the double corner cover 500 can prevent sunlight from entering the interior of the battery module 100 or the processing unit 200 through the openings 112, 212. This can improve the safety and lifespan of the battery pack.

[0052] Fig. 5 is an enlarged view of portion A in Fig. 2. Referring to Fig. 5, the battery pack according to one embodiment of the present invention may further include a cable 700 passing through at least one of the first opening 112 or the second opening 212, and the double corner cover 500 may be configured to cover the cable 700.

[0053] The cable 700 can electrically connect the battery module 100 and the processing unit 200. The cable 700 can also electrically connect two battery modules 100. If the battery pack includes multiple processing units 200, the cable 700 can also electrically connect the two processing units 200. A plurality of cables 700 can be configured. The cable 700 can transmit power and signals. One or more battery modules 100 and one or more processing units 200 that constitute the battery pack can be arranged in various configurations. The cable 700 can be configured to pass through openings 112, 212 formed in corners 111, 211 at positions that make it easy to electrically connect the battery modules 100 and the processing units 200. The cable 700 may pass through an opening 112, 212 formed in any corner 111, 211 of a battery module 100 or a processing unit 200, and may pass through an opening 112, 212 formed in any corner 111, 211 of another battery module 100 or another processing unit 200.

[0054] The double corner cover 500 may cover the cable 700. The cable 700 and the openings 112, 212 may be covered by the double corner cover 500.

[0055] According to this configuration of the present invention, the double corner cover 500 covers the cable 700, thereby preventing foreign objects from entering the cable 700. Furthermore, the double corner cover 500 covers the cable 700, thereby preventing the cable 700 from being damaged by sunlight. This improves the safety and lifespan of the battery pack.

[0056] Fig. 6 is a view of a corner cover of a battery pack according to an embodiment of the present invention as seen from the outside. Fig. 7 is a view of a corner cover of a battery pack according to an embodiment of the present invention as seen from the inside. Fig. 8 is a view showing a state in which a corner cover of a battery pack according to an embodiment of the present invention is coupled to a battery module and a processing unit. Fig. 9 is a view showing a state in which a corner cover of a battery pack according to an embodiment of the present invention is coupled to a coupling member. Fig. 10 is an enlarged view of a corner cover of a battery pack according to an embodiment of the present invention.

[0057] 6 and 10, the corner cover of the battery pack according to an embodiment of the present invention may be formed in a flat plate shape. The double corner cover may include a plate, which may be flat. The double corner cover may connect the side plates of two adjacent battery modules. Also, the double corner cover may connect the side plates of two adjacent processing units. Furthermore, referring to FIG. 10, the double corner cover may connect the side plates of adjacent battery modules and the side plates of the processing units.

[0058] According to this configuration of the present invention, the double corner cover can cover the gap between adjacent battery modules, between adjacent processing units, or between adjacent battery modules and processing units, thereby preventing the intrusion of foreign objects, thereby improving the safety and lifespan of the battery pack.

[0059] 6, 7, and 9, a corner cover 500 of a battery pack according to an embodiment of the present invention may include first hooks 520 formed on an inner surface and coupled to a coupling member 600. The double corner cover 500 may include first hooks 520 protruding inward from a plate 510. A plurality of first hooks 520 may be formed. Two pairs of first hooks 520 may be fastened to one coupling member 600. Alternatively, the two pairs of first hooks 520 may be fastened to the first part 610 and the fifth part 650, respectively.

[0060] 7 and 9, the double corner cover 500 may include four pairs of first hooks 520. Two pairs of the first hooks 520 may be fastened to two connecting members 600, respectively.

[0061] According to this configuration of the present invention, the double corner cover 500 can be easily hooked to the connecting member 600 without a separate fastening member, thereby improving the assembly and productivity of the battery pack.

[0062] 6, 7, and 8, the corner cover 500 of the battery pack according to one embodiment of the present invention may include a second hook 530 formed on the inner surface and coupled to the first opening 112 or the second opening 212.

[0063] The double corner cover 500 may include a second hook 530 protruding from the inside of the plate 510. The second hook 530 may be formed in multiple pieces. For example, referring to FIG. 8 , the double corner cover 500 may include a second hook 530 fastened to the first opening 112 and a second hook 530 fastened to the second opening 212.

[0064] According to this configuration of the present invention, the double corner cover 500 can be easily hooked to the battery module 100 or the processing unit 200 without any separate fastening members, thereby improving the assembly and productivity of the battery pack.

[0065] 5 and 8, the battery module 100 of the battery pack according to an embodiment of the present invention may further include a first step portion 113 formed at a first corner 111. The processing unit 200 may further include a second step portion 213 formed at a second corner 211. The corner cover 500 may be placed on the first step portion 113 and the second step portion 213.

[0066] The first step portions 113 may be formed on both sides of the first corner 111. The first step portions 113 may be formed on the inner side of the side plates that form the first corner 111. The step of the first step portions 113 may be formed to be substantially the same as the thickness of the plate 500 of the double corner cover 500.

[0067] The second step portions 213 may be formed on both sides of the second corner 211. The second step portions 213 may be formed on the inner side of the side plates that form the second corner 311. The step of the second step portions 213 may be formed to be substantially the same as the thickness of the plate 510 of the double corner cover 500.

[0068] The plate 510 of the double corner cover 500 may be placed on the first step portion 113 and the second step portion 213. The first step portion 113 and the second step portion 213 may support the plate 510.

[0069] According to this configuration of the present invention, the double corner cover 500 can maintain a stable connection with the battery module 100 or the processing unit 200 by being placed on the first step portion 113 and the second step portion 213. This can improve the stability of the battery pack.

[0070] 1, 2 and 9, the battery pack according to an embodiment of the present invention may further include a first front cover 300 and a second front cover 300.

[0071] The first front cover 300 may be disposed on the front surface of the battery module 100. Alternatively, the first front cover 300 may be fastened or coupled to the front plate or front surface of the battery module 100. The first front cover 300 may have a larger area than the front surface or front plate of the battery module 100. The battery module 100 may have ports 120 on the front surface or front plate. Cables 700 may be connected to the ports 120. The battery module 100 may be electrically connected to other adjacent battery modules 100 or processing units 200 via the ports 120. The first front cover 300 may cover the ports 120 and the cables 700 connected to the ports 120.

[0072] The second front cover 300 may be disposed on the front surface of the processing unit 200. Alternatively, the second front cover 300 may be fastened or coupled to the front plate or front surface of the processing unit 200. The second front cover 300 may have a larger area than the front surface or front plate of the processing unit 200. The processing unit 200 may have a port 220 on the front surface or front plate. A cable 700 may be coupled to the port 220. The processing unit 200 may be electrically connected to an adjacent battery module 100 or another processing unit 200 via the port 220. The second front cover 300 may cover the cable 700 coupled to the port 120 and the port 220. The first front cover 300 and the second front cover 300 may have substantially the same shape and structure.

[0073] At least one of the first front cover 300 and the second front cover 300 may cover the front side of the double corner cover 500. Referring to Fig. 10 , the first front cover 300 and the second front cover 300 may cover the front side of the double corner cover 500. In addition, the first front cover 300 and the second front cover 300 may cover the space between the double corner cover 500 and the battery module 100 and the space between the double corner cover 500 and the processing unit 200.

[0074] According to this configuration of the present invention, the first front cover 300, the second front cover 300, and the double corner cover 500 can prevent foreign matter from entering by covering the gap between adjacent battery modules 100, between adjacent processing units 200, or between adjacent battery modules 100 and processing units 200. This can improve the safety and lifespan of the battery pack.

[0075] 9 and 10, the corner cover 500 of the battery pack according to an embodiment of the present invention may include a support portion 540 disposed on the front side and supporting the rear surface of the first front cover 300 or the second front cover 300.

[0076] The support portion 540 may protrude inward from the plate 510. The support portion 540 may be formed on the front side of the plate 510. The support portion 540 may support the portion where the first front cover 300 and the second front cover 300 are adjacent to each other. A portion of the support portion 540 may support the rear surface of the first front cover 300, and a portion of the support portion 540 may support the rear surface of the second front cover 300.

[0077] According to this configuration of the present invention, the first front cover 300 and the second front cover 300 can be stably connected to each other by the double corner cover 500. This can improve the rigidity or stability of the battery pack.

[0078] FIG. 11 is a perspective view showing a corner of a battery pack according to an embodiment of the present invention. Referring to FIG. 11, a coupling member may be fastened to a corner 211 of a battery pack according to an embodiment of the present invention. The corners 111 and 211 may be the corners 111 of the battery module 100 or the corners 211 of the processing unit 200. The corners 111 and 211 may be the corners 111 of the battery module 100 or the corners 211 of the processing unit 200 located at the outermost periphery of the battery pack. A coupling member 600 may be fastened to the corners 111 and 211. Both sides of the coupling member 600 may be fastened to the corners 111 and 211 by fastening members S. For example, referring to FIG. 11, both sides of the coupling member 600 may be fastened to the corners 211 of the processing unit 200 through holes 602 and 603.

[0079] FIG. 12 is a perspective view showing a corner cover 400 of a battery pack according to one embodiment of the present invention. FIG. 13 is a perspective view showing the inner surface of the corner cover 400 of a battery pack according to one embodiment of the present invention. A battery pack according to one embodiment of the present invention may include the corner cover 400. The corner cover 400 may be referred to as a single-corner cover 400. The single-corner cover 400 may have a folded plate shape. The single-corner cover 400 may include a first part 410 and a second part 420. The first part 410 and the second part 420 may have a folded plate shape. For example, the first part 410 and the second part 420 may be vertically connected. The single-corner cover 400 may be coupled to any one of the four corners 111, 211 of the battery module 100 or the processing unit 200.

[0080] The single corner cover 400 may include guides 430 and hooks 440 protruding from the inner surface. The guides 430 may be provided in a pair. The hooks 440 may be provided in two pairs. A pair of guides 430 may be provided on the first part 410 and the second part 420, respectively. Two pairs of hooks 440 may be provided on the first part 410 and the second part 420, respectively. The single corner cover 400 may include a protrusion 450 protruding from the front side. The protrusion 450 may be formed across the first part 410 and the second part 420. The single corner cover 400 may also have a groove 460 formed on the rear side. The groove 460 may be formed across the first part 410 and the second part 420.

[0081] FIG. 14 is a diagram illustrating the connection between a corner cover 400 and a connecting member 600 of a battery pack according to one embodiment of the present invention. Referring to FIG. 14 , a hook 440 may be fastened to the connecting member 600. The hook 440 may be fastened to a hole 601 of the connecting member 600. The holes 601 of the connecting member 600 may be formed in a pair. A pair of hooks 440 may be fastened to one hole 601. The connecting member 600 may be positioned between a pair of guides 430. After being hook-connected to the connecting member 600, the single-corner cover 400 may slide forward and backward. The guide 430 may guide the single-corner cover 400 to slide along the connecting member 600.

[0082] According to this configuration of the present invention, the single-corner cover 400 can be easily hook-coupled to the coupling member 600 without a separate fastening member, thereby improving the assembly and productivity of the battery pack.

[0083] FIG. 15 is a diagram showing corner covers 400 coupled to corners 111, 211 of a battery pack according to an embodiment of the present invention. FIG. 16 is a diagram showing a portion of a cross-sectional configuration taken along section line B-B' in FIG. 15. FIG. 17 is a diagram showing a portion of a cross-sectional configuration taken along section line C-C' in FIG. 15. Referring to FIGS. 14 to 17, the single corner cover 400 of the battery pack according to an embodiment of the present invention can slide to contact or adhere to the front cover 300. The protrusion 450 of the single corner cover 400 can be inserted inside the front cover 300.

[0084] The single corner cover 400 may include a mounting portion 411 formed along the edge of the first part 410. The single corner cover 400 may also include a mounting portion 420 formed along the edge of the second part 420. The mounting portions 411, 421 of the single corner cover 400 may be placed on the stepped portion 213 of the corner 211. The stepped portion 213 may support the mounting portions 411, 421 of the single corner cover 400. The single corner cover 400 may also cover the opening 212 of the corner 211.

[0085] According to this configuration of the present invention, the single corner cover 400 is placed on the first step portion 113 and the second step portion 213, thereby maintaining a stable connection state with the battery module 100 or the processing unit 200. This improves the stability of the battery pack.

[0086] Furthermore, according to this configuration of the present invention, the battery module 100 and the processing unit 200 may have openings 112, 212 for connection to external components, and if the openings 112, 212 are exposed to the outside, the interior may be damaged by the entry of foreign objects. The single-corner cover 400 can protect the interior of the battery module 100 or the processing unit 200 by covering the openings 112, 212, thereby improving the safety and lifespan of the battery pack.

[0087] FIG. 18 is a rear perspective view of a battery pack according to one embodiment of the present invention. FIG. 19 is a diagram illustrating a wall mount bracket 810 of a battery pack according to one embodiment of the present invention. Referring to FIG. 18, a battery pack according to one embodiment of the present invention may include a connecting bar 820. The connecting bar 820 may be provided on each of the battery modules 100 or the processing unit 200. The battery module 100 or the processing unit 200 may each include two connecting bars 820. The connecting bars 820 may be provided on or fastened to the rear surface of the battery module 100 or the processing unit 200. For example, referring to FIG. 16, the two connecting bars 820 provided on the rear surface of the battery module 100 may be arranged side by side. Furthermore, the two connecting bars 820 provided on the rear of the processing unit 200 may be arranged side by side.

[0088] 19 , a battery pack according to an embodiment of the present invention may include a wall mount bracket 810. The wall mount bracket 810 may be installed on a fixed object such as a structure such as a wall or the exterior wall of a building. The wall mount bracket 810 may include a hanging portion 811. The connecting bar 820 of the battery module 100 or the connecting bar 820 of the processing unit 200 may be hooked onto or connected to the hanging portion 811. A plurality of wall mount brackets 810 may be provided. The number of wall mount brackets 810 may be equal to the total number of battery modules 100 and processing units 200. The wall mount brackets 810 may be provided in one-to-one correspondence with the battery modules 100 and the processing units 200.

[0089] According to this configuration of the present invention, the wall mount brackets 810 can be provided in accordance with the number of battery modules 100 or processing units 200 provided in the battery pack. This allows for easy installation on a wall or structure even when the battery pack has a variety of configurations and shapes.

[0090] Fig. 20 is a perspective view showing a battery pack according to one embodiment of the present invention. Fig. 21 is an exploded perspective view of a portion of a battery pack according to one embodiment of the present invention. Fig. 22 is an enlarged view of a portion of a battery pack according to one embodiment of the present invention. Referring to Figs. 20 to 22, a battery pack according to one embodiment of the present invention may include a battery module 100, a processing unit 200, and a corner cover 400.

[0091] The battery module 100 may include a first corner 111 formed by two side plates and a first opening 112 formed in the first corner 111. The battery module 100 may have a rectangular parallelepiped shape. The housing 110 may form the exterior of the battery module 100. The housing 110 of the battery module 100 may include a front plate and four side plates. The four side plates of the housing 110 may form four corners 111. The four corners may be formed in a chamfered shape. Alternatively, the corner 111 may be a plate connecting two side plates. Alternatively, the corner 111 may be formed by two side plates. The corner 111 may include an opening 112. The opening 112 may be shaped to open forward or in the X-axis direction. The four corners 111 may have substantially the same shape. The battery module 100 may include a plurality of battery cells therein. In this case, the battery cells may be secondary batteries. The battery module 100 can charge the battery cells with power and discharge the power of the battery cells to the outside. Depending on the required amount of power and output, a battery pack may be composed of multiple battery modules 100. For example, as shown in FIG. 20, the battery pack may include two battery modules 100a and 100b.

[0092] The processing unit 200 is located on the front side of the battery module 100a and controls charging and discharging of the battery module 100a. The processing unit 200 may have a second corner 211 adjacent to the first corner 111 and a second opening 212 formed in the second corner 211. The processing unit 200 may have a rectangular parallelepiped shape. The housing 210 may form the exterior of the processing unit 200. The appearance or size of the processing unit 200 and the battery module 100 may be very similar or substantially the same. The housing 210 of the processing unit 200 may include a front plate and four side plates. The four side plates of the housing 210 may form four corners 211. The four corners 211 may be formed in a chamfered shape. Alternatively, the corners 211 may be plates connecting two side plates. Alternatively, the corners 211 may be formed by two side plates. The corners 211 may have openings 212. The openings 212 may be shaped to open forward or in the X-axis direction. The four corners 211 may have substantially the same shape. The processing unit 200 may be electrically connected, coupled, or coupled to multiple battery modules 100. The processing unit 200 may control charging and discharging of the battery modules 100. The processing unit 200 may also detect and acquire status information of the battery modules 100. A battery pack may be configured to include multiple processing units 200 for controlling multiple battery modules 100.

[0093] For example, as shown in Fig. 20, a battery pack may include two battery modules 100 and one processing unit 200. The two battery modules 100 and the processing unit 200 may be electrically connected to each other. The processing unit 200 may control the charging and discharging of the three battery modules 100 and may acquire or detect status information such as the voltage or temperature of the three battery modules 100. Each corner 111 of the battery modules 100 and each corner 211 of the processing unit 200 may be formed in substantially the same shape.

[0094] The corner cover 400 may be coupled to the corner 211 of the processing unit 200. The corner cover 400 may then cover the opening 212 of the processing unit 200. The corner cover 400 may be referred to as a single-corner cover 400. The single-corner cover 400 may be configured to be able to be coupled to any of the four corners 111 of the battery module 100 and any of the four corners 211 of the processing unit 200.

[0095] According to this configuration of the present invention, the battery pack may include one or more battery modules 100 and one or more processing units 200 in various combinations. The positional relationship and coupling relationship between the battery modules 100 and the processing units 200 constituting the battery pack may be configured in various ways. As a result, the battery pack may be configured to flexibly respond to various required power amounts and outputs. Furthermore, by configuring the battery pack to have a diversely deformable outer shape, the battery pack may be freed from installation space constraints.

[0096] Furthermore, according to this configuration of the present invention, the single-corner cover 400 can protect the internal structure of the battery pack by covering the corners 111 of the adjacent battery modules 100 and the corners 211 of the adjacent processing units 200. The battery modules 100 and the processing units 200 may have openings 112 and 212 for connecting to external structures, and if the openings 112 and 212 are exposed to the outside, the interior may be damaged by the entry of foreign objects. The single-corner cover 400 can protect the interior of the battery modules 100 and the processing units 200 by covering the openings 112 and 212. This can improve the safety and lifespan of the battery pack.

[0097] Furthermore, according to this configuration of the present invention, when the battery pack is installed outdoors, the single corner cover 400 can prevent sunlight from entering the interior of the battery module 100 or the processing unit 200 through the openings 112, 212. This can improve the safety and lifespan of the battery pack.

[0098] 21 to 23, the battery pack according to the embodiment of the present invention may further include a cable 700 that passes through the opening 212 and electrically connects the battery module 100 and the processing unit 200.

[0099] The cable 700 can electrically connect the battery module 100 and the processing unit 200. The cable 700 can also electrically connect two battery modules 100. Furthermore, when a battery pack includes multiple processing units 200, the cable 700 can also electrically connect the two processing units 200. A plurality of cables 700 can be configured. The cable 700 can transmit power and signals. One or more battery modules 100 and one or more processing units 200 that constitute a battery pack can be arranged in various configurations. The cable 700 can be configured to pass through openings 112, 212 formed in corners 111, 211 at positions that make it easy to electrically connect the battery module 100 and the processing unit 200. The cable 700 may pass through an opening 112, 212 formed in any corner 111, 211 of a battery module 100 or a processing unit 200, and may pass through an opening 112, 212 formed in any corner 111, 211 of another battery module 100 or another processing unit 200.

[0100] The single corner cover 400 may cover the cable 700. The cable 700 and the openings 112, 212 may be covered by the single corner cover 400.

[0101] According to this configuration of the present invention, the single corner cover 400 covers the cable 700, thereby preventing foreign objects from entering the cable 700. Furthermore, the single corner cover 400 covers the cable 700, thereby preventing the cable 700 from being damaged by sunlight. This improves the safety and lifespan of the battery pack.

[0102] Referring to FIG. 20 , the battery pack may include a stand 920. The stand 920 may be provided on each of the processing unit 200 or the battery module 100. Multiple stands 920 may be connected, coupled, or fastened to one another by a coupling member 600. The stand 920 may increase the height of the battery pack. If the battery pack is installed outdoors or on the ground, the battery pack may be damaged by rainwater, etc. By including the stand 920, the battery pack can protect the battery module 100 or the processing unit 200.

[0103] 20 to 23, the battery module 100 of the battery pack according to an embodiment of the present invention may be located behind the processing unit 200. The battery pack may also include a coupling member 600 having one side fastened to a corner 211 of the processing unit 200 and the other side fastened to a corner 111 of the battery module 100.

[0104] A plurality of battery modules 100 may be deployed. The first battery module 100a may be located behind the processing unit 200. The second battery module 100b may be located behind the first battery module 100a. The coupling member 600a may couple the processing unit 200 and the first battery module 100a. The coupling member 600b may couple the first battery module 100a and the second battery module 100b. One side and the other side of the coupling member 600 may be fastened to corners 111, 211 by fastening members S. The coupling member 600 may be configured to be fastenable to any of the four corners of the battery module 100 and the four corners of the processing unit 200.

[0105] 23, one side of the coupling member 600a may be fastened to the corner 211 of the processing unit 200, and the other side may be fastened to the corner 111 of the first battery module 100a. And one side of the coupling member 600b may be fastened to the corner 111 of the first battery module 100a, and the other side may be fastened to the corner 111 of the second battery module 100b.

[0106] According to this configuration of the present invention, the connecting member 600 can stably connect, couple, or fasten the battery module 100 and the processing unit 200 that constitute the battery pack.

[0107] 22 and 23, a battery pack according to an embodiment of the present invention may include a front cover 300 that is disposed in front of the processing unit 200 and covers the front side of the corner cover 400.

[0108] The front cover 300 may be disposed on the front surface of the processing unit 200. Alternatively, the front cover 300 may be fastened or coupled to a front plate or front surface of the processing unit 200. The front cover 300 may have a larger area than the front surface or front plate of the processing unit 200. The processing unit 200 may have ports 220 on its front surface or front plate. Cables 700 may be coupled to the ports 220. The processing unit 200 may be electrically connected to an adjacent battery module 100 or another processing unit 200 via the ports 220. The front cover 300 may cover the cables 700 coupled to the ports 120 and 220.

[0109] Additionally, the front cover 300 may cover the front side of the single corner cover 400. The front cover 300 may cover the space between the single corner cover 400 and the corner 211 of the processing unit 200.

[0110] According to this configuration of the present invention, the front cover 300 can prevent foreign objects from entering by covering the gap between the single corner cover 400 and the corner 211 of the processing unit 200. This can improve the safety and lifespan of the battery pack.

[0111] Fig. 24 is a diagram illustrating a portion of a cross-sectional configuration along section line DD' in Fig. 22. Referring to Fig. 24, corner cover 400 of a battery pack according to an embodiment of the present invention may include protrusions 450 that protrude forward and are inserted into the inside of front cover 300.

[0112] The single-corner cover 400 may include a protrusion 450 that protrudes forward. The protrusion 450 may be formed across the first part 410 and the second part 420.

[0113] The front cover 300 may form a space. The protrusion 450 may be inserted into the space formed by the front cover 300. Alternatively, the protrusion 450 may be inserted inside the front cover 300.

[0114] According to this configuration of the present invention, the protrusion 450 can close the gap between the front cover 300 and the single corner cover 400, and can prevent foreign matter from entering the gap between the front cover 300 and the single corner cover 400. This can improve the safety and lifespan of the battery pack.

[0115] 26 is a view showing a corner cover 400 of a battery pack according to an embodiment of the present invention. Referring to FIGS. 24 and 26, the corner cover 400 according to an embodiment of the present invention may be coupled to a coupling member 600 so as to be slidable in the front-rear direction. The single corner cover 400 may slide to contact or closely contact the front cover 300. The protrusion 450 of the single corner cover 400 may be inserted inside the front cover 300.

[0116] According to this configuration of the present invention, the battery module 100 and the processing unit 200 may have openings 112, 212 for connecting to external components. If the openings 112, 212 are exposed to the outside, the interior may be damaged by the intrusion of foreign objects. The single-corner cover 400 is slidably connected to the connecting member, thereby effectively closing gaps through which foreign objects can enter the battery pack. This protects the interior of the battery module 100 and the processing unit 200 and improves the safety and lifespan of the battery pack.

[0117] 25 is a diagram illustrating a portion of a cross-sectional configuration taken along the cutting line E-E' in FIG. 3. Referring to FIG. 25, a single-corner cover 400 of a battery pack according to an embodiment of the present invention may include a mounting portion 411 formed along an edge of a first part 410. The single-corner cover 400 may also include a mounting portion 420 formed along an edge of a second part 420. The mounting portions 411 and 421 of the single-corner cover 400 may be mounted on the stepped portion 213 of the corner 211. The stepped portion 213 may support the mounting portions 411 and 421 of the single-corner cover 400. The single-corner cover 400 may also cover the opening 212 of the corner 211.

[0118] According to this configuration of the present invention, the single corner cover 400 is placed on the first step portion 113 and the second step portion 213, thereby maintaining a stable connection state with the battery module 100 or the processing unit 200. This improves the stability of the battery pack.

[0119] 26, a corner cover 400a according to one embodiment of the present invention may include hooks 471, 481 protruding from an inner surface and coupled to a coupling member 600a. The single corner cover 400a may have a folded plate shape. The single corner cover 400a may include a first part 410 and a second part 420. The first part 410 and the second part 420 may form a folded plate shape. For example, the first part 410 and the second part 420 may be vertically connected. Alternatively, the hook 481 may be fastened to a hole 601 in the fourth part 640.

[0120] The single corner cover 400a may include first guides 482 and first hooks 481 protruding from the inner surface. The first guides 482 may be provided in pairs. The first hooks 481 may be provided in pairs. The pair of first guides 482 may be provided on the first part 410 and the second part 420, respectively. The pair of first hooks 481 may be provided on the first part 410 and the second part 420, respectively.

[0121] The single corner cover 400a may include second guides 472 and second hooks 471 protruding from the inner surface. The second guides 472 may be provided in pairs. The second hooks 471 may be provided in pairs. The pair of second guides 472 may be provided on the first part 410 and the second part 420, respectively. The pair of second hooks 471 may be provided on the first part 410 and the second part 420, respectively.

[0122] The first hook 481 may be fastened to the connecting member 600a. The first hook 481 may be fastened to a hole 601 of the connecting member 600a. The holes 601 of the connecting member 600a may be formed in a pair. A pair of first hooks 481 may be fastened to one hole 601. The third part 630 of the connecting member 600a may be positioned between a pair of first guides 482. After being hook-coupled to the connecting member 600a, the single-corner cover 400 may slide in the front-to-rear direction or the X-axis direction. The hole 601 may be formed in an elongated hole shape, allowing the first guide 482 to slide. The first guide 482 can guide the single-corner cover 400a to slide along the connecting member 600a.

[0123] According to this configuration of the present invention, the single-corner cover 400a can be easily hooked to the connecting member 600a without a separate fastening member, thereby improving the assembly and productivity of the battery pack.

[0124] 27 is a diagram showing a corner cover 400b of a battery pack according to an embodiment of the present invention. Referring to FIG. 27, the corner cover 400b according to an embodiment of the present invention may include hooks 471 and 481 protruding from the inner surface and coupled to the coupling members 600a and 600b.

[0125] The second hook 471 may be fastened to the connecting member 600b. The second hook 471 may be fastened to a hole 601 of the connecting member 600a. The holes 601 of the connecting member 600a may be formed in a pair. A pair of second hooks 471 may be fastened to one hole 601. The third part 630 of the connecting member 600a may be positioned between a pair of second guides 472. After being hook-coupled to the connecting member 600a, the single-corner cover 400b may slide in the front-to-rear direction or the X-axis direction. The hole 601 may be formed in an elongated hole shape, allowing the second guide 472 to slide. The second guide 472 can guide the single-corner cover 400b to slide along the connecting member 600a.

[0126] The coupling member 600a may have holes 602, 603 on one side and the other side. The coupling member 600a can be fastened to the corners 111, 211 by fastening members S passing through the holes 602, 603. The hole 602 formed on one side may have a shape that opens toward the front or in the X-axis direction. This shape allows the coupling member 600a to be easily fastened to the corners 111, 211 while accommodating tolerances that occur in the production process of the battery module 100 and the processing unit 200.

[0127] According to this configuration of the present invention, the single-corner cover 400b can be easily hook-coupled to the coupling member 600a without a separate fastening member, thereby improving the assembly and productivity of the battery pack.

[0128] 27, a battery pack according to one embodiment of the present invention may include a first corner cover 400a and a second corner cover 400b, where the first corner cover 400a covers one side of the connecting member 600a and the second corner cover 400b covers the other side of the connecting member 600a. The first corner cover 400a and the second corner cover 400b may be the same part or component.

[0129] Two single corner covers 400a, 400b can be coupled to one coupling member 600a, and one coupling member 600a can be covered by two single corner covers 400a, 400b.

[0130] According to this configuration of the present invention, by connecting two single corner covers 400a, 400b to one connecting member 600a, the number of parts can be reduced, thereby improving the assembly and productivity of the battery pack.

[0131] Referring to FIG. 27, the first corner cover of the battery pack according to one embodiment of the present invention may include a groove formed on the rear side, and the second corner cover may include a second protrusion that protrudes on the front side and is inserted into the groove.

[0132] The single corner covers 400a, 400b may have a groove 460 formed on the rear side. The groove 460 may be formed across the first part 410 and the second part 420. The groove 460 may have a shape corresponding to the protrusion 450. The second single corner cover 400b may be slidably moved after being hook-coupled to the coupling members 600a, 600b. By sliding, the protrusion 450 of the second single corner cover 400b may be inserted into the groove 460 of the first single corner cover 400a.

[0133] This configuration of the present invention can prevent gaps from occurring between adjacent single corner covers 400a, 400b, thereby preventing foreign objects from entering the battery pack and improving the safety and lifespan of the battery pack.

[0134] 22, 23, and 27, the processing unit 200 of the battery pack according to one embodiment of the present invention may include a first opening 212, and the battery module 100a may include a second opening 112. The battery pack may include a cable 700 passing through the first opening 212 and the second opening 112. A second corner cover 400b may cover the second opening 112 and the cable 700.

[0135] The cable 700 can pass through the opening 212 of the processing unit 200 and the opening 112 of the battery module 100a. The single-corner covers 400a, 400b can cover the corner 211 of the processing unit 200 and the corner 111 of the battery module 100a. The single-corner covers 400a, 400b can also cover the opening 212 of the processing unit 200 and the opening 112 of the battery module 100a. The single-corner covers 400a, 400b can also cover the connecting members 600a, 600b. The single-corner covers 400a, 400b can also cover the cable 700.

[0136] According to this configuration of the present invention, the single corner covers 400a, 400b prevent the corners 211, 111 of the processing unit 200 or the battery module 100a and the components adjacent to the corners 211, 111 from being exposed to the outside and can prevent foreign objects from entering from the outside, thereby improving the safety and lifespan of the battery pack.

[0137] Fig. 28 is a diagram showing a corner cover 400c of a battery pack according to one embodiment of the present invention. Fig. 29 is a diagram showing the corner cover 400c and a mounting bracket 910 of a battery pack according to one embodiment of the present invention. Referring to Figs. 23, 28, and 29, a battery pack according to one embodiment of the present invention may include a mounting bracket 910. The mounting bracket 910 may be fastened to the cover 111 of the battery module 100b by fastening members S. The mounting bracket 910 may secure the battery pack to a structure such as a wall.

[0138] The mounting bracket 910 may include a connecting portion 911. The hook 481 of the single-corner cover 400c may be connected to the connecting portion 911. The connecting portion 911 may be located between the guides 482 of the single-corner cover 400c. Additionally, the single-corner cover 400c may cover at least a portion of the mounting bracket 910.

[0139] The above-described battery modules 100, 100a, 100b are designated by different reference numerals for ease of description, but are components having the same structure and shape. The coupling members 600, 600a, 600b are designated by different reference numerals for ease of description, but are components having the same structure and shape. The single corner covers 400, 400a, 400b are designated by different reference numerals for ease of description, but are components having the same structure and shape.

[0140] An energy storage system according to the present invention includes one or more battery packs according to the present invention described above. In addition to such a battery pack, the energy storage system according to the present invention may further include other components typically included in an energy storage system. In particular, the energy storage system according to the present invention may be a residential (building) energy storage system used to store energy in homes, buildings, etc.

[0141] Meanwhile, although directional terms such as up, down, left, right, front, and back can be used in this specification, it will be obvious to those skilled in the art of the present invention that these terms are used merely for the convenience of explanation and may vary depending on the position of the object in question, the position of the observer, etc.

[0142] Although the present invention has been described above using limited embodiments and drawings, the present invention is not limited to these, 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 technical spirit of the present invention and the scope of equivalents of the claims.

Claims

1. a first battery module having a first corner formed by two side plates, the two side plates being disposed on side surfaces of the first battery module; a processing unit having a second corner formed by two side plates, electrically connected to the first battery module, and controlling charging and discharging of the battery module, the two side plates being disposed on side surfaces of the processing unit; a first coupling member having one side fastened to the first corner and another side fastened to the second corner; a cover that is hook-coupled to the first coupling member and covers the first corner and / or the second corner; a front cover that covers a front surface of the first battery module and / or the processing unit and is formed separately from the two side plates; Including battery pack.

2. The first battery module is the first battery module is arranged next to the processing unit such that one side of the first battery module faces one side of the processing unit; The first corner and the second corner are The battery pack of claim 1 , wherein the battery pack is adjacent.

3. A second battery module electrically connected to the processing unit, the second battery module being arranged alongside the processing unit such that one side of the second battery module faces a side of the processing unit that does not face the side of the first battery module; a second coupling member having one side fastened to the second battery module and the other side fastened to the processing unit; 3. The battery pack of claim 2, further comprising:

4. The battery pack of claim 2 , wherein the cover further comprises a double-corner cover covering the first corner and the second corner.

5. a cable passing through a first opening formed in the first corner and a second opening formed in the second corner; The double corner cover is The battery pack of claim 4 , further comprising: a cover for the cable.

6. The first battery module is Located behind the processing unit, The battery pack of claim 1 , wherein the first corner and the second corner are adjacent.

7. The cover is a first single corner cover that is hook-coupled to the first coupling member and covers the second corner; a second single corner cover that is hook-coupled to the first coupling member and covers the first corner; 7. The battery pack of claim 6, further comprising:

8. a cable passing through a first opening formed in the first corner and a second opening formed in the second corner; The first single corner cover and the second single corner cover are The battery pack of claim 7 , further comprising: a cover for the cable.

9. a second battery module having a third corner formed by two side plates and positioned rearward of the first battery module, the first corner and the third corner being arranged to overlap in the front-rear direction; a second coupling member having one side fastened to the second corner and the other side fastened to the third corner; 7. The battery pack of claim 6, further comprising:

10. The battery pack of claim 9 , further comprising a third single corner cover hook-coupled to the second coupling member and covering the third corner.

11. 11. An energy storage system comprising a battery pack according to any one of claims 1 to 10.

Images