Battery pack

Abstract

To provide a battery pack in which the number of battery modules can be variously configured.SOLUTION: A battery pack is disclosed. A battery pack according to an embodiment of the present disclosure includes a battery module, and a processing unit electrically connected to the battery module and configured to control charging and discharging of the battery module, wherein at least one of the battery module and the processing unit may be configured such that another battery module or another processing unit is coupled to two or more sides thereof.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This application claims priority based on Korean Patent Application No. 10-2021-0188346, filed on December 27, 2021, and the entire contents disclosed in the specification and drawings of that application are incorporated herein by reference.

[0002] The present invention relates to a battery pack. [Background technology]

[0003] 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 of being able to be freely charged and discharged since they have almost no memory effect compared to nickel-based secondary batteries, as well as their extremely low self-discharge rate and high energy density.

[0004] Such lithium secondary batteries primarily 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.

[0005] Generally, lithium secondary batteries are classified according to the shape of their exterior packaging into can-type secondary batteries in which an electrode assembly is housed in a metal can, and pouch-type secondary batteries in which an electrode assembly is housed in a pouch made of an aluminum laminate sheet.

[0006] Such 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. Recently, residential energy storage systems have been widely used to store and supply power for use in buildings such as homes and offices. The core component of such residential energy storage systems is the battery pack.

[0007] 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 demand for an ESS that allows the battery pack configuration to be flexibly changed to meet various customer needs. There is also a strong demand for an ESS that can be shaped differently so that it can be installed even under various spatial constraints. Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention is directed to solving the above-mentioned problems and other problems.

[0009] Another object of the present invention is to provide a battery pack that can be configured with a variety of numbers of battery modules.

[0010] It is yet another object of the present invention to provide a battery pack that can be configured with a variety of numbers of processing units.

[0011] It is still another object of the present invention to provide a battery pack whose exterior can be shaped in various ways.

[0012] It is still another object of the present invention to provide a battery pack having a corner cover that can cover a corner between an adjacent battery module or between an adjacent processing unit and a battery module.

[0013] It is still another object of the present invention 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 includes a battery module and a processing unit electrically connected to the battery module and controlling charging and discharging of the battery module, and at least one of the battery module and the processing unit may be configured to be connectable to other battery modules or other processing units on two or more sides.

[0015] Also, at least one of the battery module and the processing unit may be configured to be connectable to other battery modules or other processing units on three or more sides.

[0016] The battery pack may further include a coupling member coupled to the battery module and the processing unit.

[0017] In addition, the coupling member may be fastened to a corner formed by two side plates of the battery module and a corner formed by two side plates of the processing unit.

[0018] Additionally, the battery module may be located on one side of the processing unit.

[0019] The battery pack may further include a first connecting bar fastened to the backplate of the processing unit, a first wall mount bracket fastened to the first connecting bar, a second connecting bar fastened to the backplate of the battery module, and a second wall mount bracket fastened to the second connecting bar.

[0020] The battery module may also be located behind the processing unit.

[0021] The battery pack may further include a first stand fastened to a lower portion of the processing unit and a second stand fastened to a lower portion of the battery module.

[0022] The battery pack may further include a first corner cover fastened to the coupling member to cover at least one of a corner of the battery module to which the coupling member is fastened and a corner of the processing unit to which the coupling member is fastened.

[0023] The battery pack may further include a second corner cover fastened to the coupling member to cover a corner of the battery module to which the coupling member is fastened and a corner of the processing unit to which the coupling member is fastened.

[0024] In order 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]

[0025] 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 battery modules.

[0026] 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.

[0027] According to at least one embodiment of the present invention, a battery pack can be provided that can have various external shapes.

[0028] 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 an adjacent processing unit and a battery module.

[0029] According to at least one embodiment of the present invention, it is possible to provide a battery pack that can improve productivity and assembly efficiency by standardizing parts.

[0030] The drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the present invention to be described later, serve to further understand the technical concepts of the present invention. Therefore, the present invention should not be interpreted as being limited to the matters described in the drawings. [Brief explanation of the drawings]

[0031] [Figure 1] 1 is a perspective view showing a battery pack according to an embodiment of the present invention; [Figure 2] 1 is a diagram illustrating a partial configuration of a battery pack according to an embodiment of the present invention in an isolated state. [Figure 3] FIG. 3 is an enlarged view of part A in FIG. 2. [Figure 4] 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 5] 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 6]10A and 10B are diagrams illustrating 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 7] 10A and 10B are views illustrating a state in which corner covers of a battery pack are coupled to coupling members according to an embodiment of the present invention; [Figure 8] FIG. 2 is an enlarged view of a corner cover of the battery pack according to an embodiment of the present invention. [Figure 9] 1 is a perspective view showing a corner of a battery pack according to an embodiment of the present invention; [Figure 10] 1 is a perspective view showing a corner cover of a battery pack according to an embodiment of the present invention; [Figure 11] 1 is a perspective view showing an inner surface of a corner cover of a battery pack according to an embodiment of the present invention; [Figure 12] 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 13] 10 is a view showing a state in which corner covers are coupled to corners of a battery pack according to an embodiment of the present invention; [Figure 14] 14 is a diagram showing a part of the cross-sectional configuration taken along the cutting line BB' in FIG. 13. FIG. [Figure 15] 14 is a diagram showing a part of the cross-sectional configuration taken along the cutting line CC' in FIG. 13. FIG. [Figure 16] 1 is a rear perspective view of a battery pack according to an embodiment of the present invention; [Figure 17] 1A and 1B illustrate a wall mount bracket for a battery pack according to one embodiment of the present invention. [Figure 18] FIG. 10 is a perspective view showing a battery pack according to another embodiment of the present invention. [Figure 19] FIG. 10 is a perspective view showing a battery pack according to yet another embodiment of the present invention. [Figure 20] FIG. 10 is a perspective view showing a battery pack according to yet another embodiment of the present invention. [Figure 21]FIG. 10 is a perspective view showing a battery pack according to yet another embodiment of the present invention. [Figure 22] FIG. 10 is a perspective view showing a battery pack according to yet another embodiment of the present invention. [Figure 23] FIG. 10 is a perspective view showing a battery pack according to yet another embodiment of the present invention. [Figure 24] FIG. 10 is a perspective view showing a battery pack according to yet another embodiment of the present invention. [Figure 25] FIG. 10 is a perspective view showing a battery pack according to yet another embodiment of the present invention. [Figure 26] 10 is a view showing a partial configuration of a battery pack according to still another embodiment of the present invention in an exploded view. FIG. [Figure 27] 10 is an enlarged view illustrating a partial configuration of a battery pack according to still another embodiment of the present invention. FIG. [Figure 28] 10 is an exploded and enlarged view illustrating a partial configuration of a battery pack according to still another embodiment of the present invention. FIG. [Figure 29] 28 is a diagram showing a part of the cross-sectional configuration taken along the cutting line DD' in FIG. 27. FIG. [Figure 30] 28 is a diagram showing a part of the cross-sectional configuration taken along the cutting line EE' in FIG. 27. FIG. [Figure 31] 10A and 10B are views showing corner covers of a battery pack according to still another embodiment of the present invention; [Figure 32] 10A and 10B are views showing corner covers of a battery pack according to still another embodiment of the present invention; [Figure 33] 10A and 10B are views showing corner covers of a battery pack according to still another embodiment of the present invention; [Figure 34] 10A and 10B are views showing corner covers and mounting brackets of a battery pack according to yet another embodiment of the present invention. [Figure 35] FIG. 10 is a perspective view showing a battery pack according to yet another embodiment of the present invention. [Figure 36] FIG. 10 is a perspective view showing a battery pack according to yet another embodiment of the present invention. [Figure 37] FIG. 10 is a perspective view showing a battery pack according to yet another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0032] 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.

[0033] 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.

[0034] In the following description, terms such as "first," "second," etc. are sometimes used. These terms are merely used to distinguish a component from other components, and do not limit the essence, order, or sequence of the components.

[0035] FIG. 1 is a perspective view showing a battery pack according to an embodiment of the present invention. FIG. 2 is a view showing an isolated configuration of a portion of the battery pack according to an embodiment of the present invention. FIG. 3 is an enlarged view of portion A in FIG. 2. Referring to FIGS. 1 to 3, the battery pack according to an embodiment of the present invention may include a battery module 100 and a processing unit 200. The processing unit 200 is electrically connected to the battery module 100 and can control charging and discharging of the battery module 100. At least one of the battery module 100 and the processing unit 200 may be configured to allow other battery modules 100 or other processing units 200 to be coupled to two or more sides thereof.

[0036] 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 have 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 open forward or in the X-axis direction. The four corners 111 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 battery module 100 can charge the battery cells with power and discharge the power from the battery cells to the outside. Depending on the amount of power and output required, 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.

[0037] 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 have 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 have 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 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 coupled, connected, 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.

[0038] 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.

[0039] Each corner 111 of the battery module 100 and each corner 211 of the processing unit 200 may have substantially the same shape. This allows the battery module 100 to be coupled to different battery modules 100 or processing units 200 at two or more of its four sides. Alternatively, the battery module 100 may be coupled to different battery modules 100 or processing units 200 at two or more of its four side plates.

[0040] Furthermore, the processing unit 200 may be coupled to the battery module 100 or another processing unit 200 on two or more of its four sides, respectively. Alternatively, the processing unit 200 may be coupled to the battery module 100 or another processing unit 200 on two or more of its four side plates, respectively.

[0041] According to such a configuration of an embodiment 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. In addition, 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 power amounts and outputs required. Furthermore, by configuring the battery pack to have a variable outer shape, it is possible to eliminate space constraints for installing the battery pack.

[0042] 1 to 3 , 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 provided 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 provided 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 corner 111 of the battery module 100 and the corner 211 of the processing unit 200. Alternatively, in this case, the two adjacent corners 111 may be the corners 111 of adjacent battery modules 100, respectively. Alternatively, in this case, 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 covering the corners 111, 211 formed by the processing unit 200 and adjacent battery modules 100, and may include two double corner covers 500 covering the corners 111 formed by two adjacent battery modules 100.

[0043] Furthermore, according to this configuration of an embodiment 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, the corners 211 of adjacent processing units 200, or the corners 211 between adjacent battery modules 100 and processing units 200. The battery modules 100 and the processing units 200 may have openings 112, 212 for connecting to external structures. If the openings 112, 212 are exposed to the outside, there is a risk of damage to the interior due to the intrusion of foreign objects. The double corner cover 500 can protect the interior of the battery modules 100 and the processing units 200 by covering the openings 112, 212. As a result, the safety and lifespan of the battery pack can be improved.

[0044] Furthermore, according to this configuration of the embodiment of the present invention, when the battery pack is installed outdoors, the double corner cover 500 can prevent sunlight from penetrating into the battery module 100 and the processing unit 200 through the openings 112 and 212. As a result, the safety and lifespan of the battery pack can be improved.

[0045] FIG. 3 is an enlarged view of portion A in FIG. 2. Referring to FIG. 3, a cable 700 can electrically connect a battery module 100 and a processing unit 200. The cable 700 can also electrically connect two battery modules 100. If 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 facilitate electrical connection between 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.

[0046] 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.

[0047] According to this configuration of the embodiment 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. As a result, the safety and lifespan of the battery pack can be improved.

[0048] 3 , a battery pack according to an embodiment of the present invention may further include a coupling member 600 coupled to the battery module 100 and the processing unit 200. The coupling member 600 may physically connect, couple, or fasten two adjacent battery modules 100 together. The coupling member 600 may also physically connect, couple, or fasten two adjacent processing units 200 together. The coupling member 600 may also physically connect, couple, or fasten two adjacent battery modules 100 and processing units 200 together.

[0049] According to this configuration according to an embodiment of the present invention, the coupling member 600 can reliably connect, couple, or fasten the battery modules 100 and the processing unit 200 that constitute the battery pack.

[0050] Referring to FIG. 3 , the connecting member 600 of the battery pack according to one embodiment of the present invention can be fastened to a corner formed by two side plates of the battery module 100 and a corner formed by two side plates of the processing unit 200.

[0051] 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.

[0052] According to this configuration according to an embodiment of the present invention, the coupling member 600 can reliably connect, couple, or fasten the battery modules 100 and the processing unit 200 that constitute the battery pack.

[0053] 3, the battery module 100 of the battery pack according to one embodiment of the present invention may be configured to be located on one side of the processing unit 200. That is, the side surface of the battery module 100 and the side surface of the processing unit 200 may face each other or contact each other. Alternatively, the side plate of the battery module 100 and the side plate of the processing unit 200 may face each other or contact each other.

[0054] 3, a battery module 100 may be configured so that another battery module 100 is located on one side of the other battery module 100. That is, the side surfaces of adjacent battery modules 100 may face each other or may be in contact with each other. Alternatively, the side plates of adjacent battery modules 100 may face each other or may be in contact with each other.

[0055] According to this configuration of the embodiment of the present invention, the battery modules 100 and the processing units 200 can be closely arranged, thereby reducing the installation space of the battery pack.

[0056] Fig. 4 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. 5 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. 6 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. 7 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. 8 is an enlarged view of a corner cover of a battery pack according to an embodiment of the present invention.

[0057] 4 and 8, the corner cover of the battery pack according to an embodiment of the present invention may be configured in a flat plate shape. The double corner cover may include a plate, and the plate 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. Also, referring to FIG. 8, the double corner cover may connect the side plates of the adjacent battery modules and processing units.

[0058] According to this configuration of an embodiment 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] 4, 5, and 7, 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. For example, referring to FIGS. 5 and 7, the double corner cover 500 may include four pairs of first hooks 520. Two pairs of first hooks 520 may be fastened to each of two coupling members 600.

[0060] According to this configuration of the embodiment of the present invention, the double corner cover 500 can be easily hook-coupled to the coupling member 600 without providing a separate fastening member, thereby improving the assembly and productivity of the battery pack.

[0061] 4, 5 and 6, 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.

[0062] The double corner cover 500 may include a second hook 530 protruding inward from the plate 510. The second hook 530 may be formed in multiple pieces. For example, referring to FIG. 6 , 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.

[0063] According to this configuration of the embodiment of the present invention, the double corner cover 500 can be easily hook-coupled to the battery module 100 or the processing unit 200 without providing a separate fastening member, thereby improving the assembly and productivity of the battery pack.

[0064] 3 and 6, 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.

[0065] 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 equal to the thickness of the plate 500 of the double corner cover 500.

[0066] 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 equal to the thickness of the plate 510 of the double corner cover 500.

[0067] 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.

[0068] According to this configuration of the embodiment of the present invention, the double corner cover 500 can be seated on the first step portion 113 and the second step portion 213, thereby stably maintaining a coupled state with the battery module 100 or the processing unit 200. As a result, the stability of the battery pack can be improved.

[0069] 1, 2, and 7, a battery pack according to an embodiment of the present invention may further include a first front cover and a second front cover.

[0070] The first front cover 300 may be provided 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 a port 120 on the front surface or front plate. A cable 700 may be connected to the port 120. The battery module 100 may be electrically connected to another adjacent battery module 100 or a processing unit 200 via the port 120. The first front cover 300 may cover the port 120 and the cable 700 connected to the port 120.

[0071] The second front cover 300 may be provided 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 connected 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 port 120 and the cable 700 connected to the port 220. The first front cover 300 and the second front cover 300 may be configured to have substantially the same shape and structure.

[0072] 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. 8, 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.

[0073] According to this configuration of the embodiment of the present invention, the first front cover 300, the second front cover 300, and the double corner cover 500 can prevent foreign objects 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. As a result, the safety and lifespan of the battery pack can be improved.

[0074] 7 and 8, the corner cover 500 of the battery pack according to an embodiment of the present invention may include a support portion 540 provided on the front side thereof to support the rear surface of the first front cover 300 or the second front cover 300.

[0075] 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 another portion of the support portion 540 may support the rear surface of the second front cover 300.

[0076] According to this configuration of the embodiment of the present invention, the first front cover 300 and the second front cover 300 can be stably maintained in a coupled state by the double corner cover 500. As a result, the rigidity or stability of the battery pack can be improved.

[0077] FIG. 9 is a perspective view showing a corner of a battery pack according to an embodiment of the present invention. Referring to FIG. 9, 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. 9, both sides of the coupling member 600 may be fastened to the corners 211 of the processing unit 200.

[0078] FIG. 10 is a perspective view showing a corner cover 400 of a battery pack according to one embodiment of the present invention. FIG. 11 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 form 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.

[0079] The single corner cover 400 may include protruding guides 430 and hooks 440 on its inner surface. The guides 430 may be provided in a pair. The hooks 440 may be provided in two pairs. The pair of guides 430 may be provided on the first part 410 and the second part 420, respectively. The 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 on 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 its rear side. The groove 460 may be formed across the first part 410 and the second part 420.

[0080] FIG. 12 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. 12, 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 in the forward and backward directions. The guide 430 may guide the single-corner cover 400 to slide along the connecting member 600.

[0081] According to this configuration of the embodiment of the present invention, the single corner cover 400 can be easily hook-coupled to the coupling member 600 without providing a separate fastening member, thereby improving the assembly and productivity of the battery pack.

[0082] FIG. 13 is a view showing a state in which corner covers 400 are coupled to corners 111, 211 of a battery pack according to an embodiment of the present invention. FIG. 14 is a view showing a portion of a cross-sectional configuration taken along section line B-B' in FIG. 13. FIG. 15 is a view showing a portion of a cross-sectional configuration taken along section line C-C' in FIG. 13. Referring to FIGS. 12 to 15, the single corner cover 400 of the battery pack according to an embodiment of the present invention can slide to contact or closely adhere to the front cover 300. The protrusion 450 of the single corner cover 400 can be inserted inside the front cover 300.

[0083] The single corner cover 400 may include a mounting portion 411 formed along an edge of the first part 410. The single corner cover 400 may also include a mounting portion 420 formed along an 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.

[0084] According to this configuration of the embodiment of the present invention, the single corner cover 400 is placed on the first step portion 113 and the second step portion 213, thereby stably maintaining a coupled state with the battery module 100 or the processing unit 200. As a result, the stability of the battery pack can be improved.

[0085] Furthermore, according to this configuration of an embodiment 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, there is a risk of foreign objects entering and damaging the interior. 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. As a result, the safety and lifespan of the battery pack can be improved.

[0086] FIG. 16 is a rear perspective view of a battery pack according to an embodiment of the present invention. FIG. 17 is a view showing a wall mount bracket 810 of a battery pack according to an embodiment of the present invention. Referring to FIGS. 16 and 17, a battery pack according to an embodiment of the present invention may include a connecting bar and a wall mount bracket. A first connecting bar 820 may be fastened to a back plate of a processing unit 200. A second connecting bar 820 may be fastened to a back plate of a battery module 100. Furthermore, the first wall mount bracket 810 may be coupled to the first connecting bar 820. Furthermore, the second wall mount bracket 810 may be coupled to the second connecting bar 820.

[0087] The connecting bar 820 may be provided on each of the battery modules 100 and the processing units 200. Each of the battery modules 100 and the processing units 200 may 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. Also, the two connecting bars 820 provided on the rear surface of the processing unit 200 may be arranged side by side.

[0088] This configuration according to an embodiment of the present invention allows battery packs to be installed in various configurations. A connecting bar 820 is provided for each battery module 100 or processing unit 200, and a wall mount bracket 810 is provided to connect each connecting bar 820, making it easy to install battery packs of various shapes.

[0089] 17 , 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 locking portion 811. The connecting bar 820 of the battery module 100 or the connecting bar 820 of the processing unit 200 may be locked to or connected to the locking portion 811. A plurality of wall mount brackets 810 may be provided. The number of wall mount brackets 810 may be equal to the sum of the number of battery modules 100 and the number of 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.

[0090] According to this configuration of the embodiment of the present invention, the wall mount brackets 810 can be provided in a number corresponding to the number of battery modules 100 or processing units 200 provided in the battery pack. As a result, even if the battery pack has a different configuration or shape, it can be easily attached to a wall or structure.

[0091] FIG. 18 is a perspective view showing a battery pack according to another embodiment of the present invention. Referring to FIG. 18, at least one of the battery modules 100a1, 100a2, 100a3, and 100a4 and the processing unit 200 of the battery pack according to another embodiment of the present invention may be configured to allow other battery modules 100a1, 100a2, 100a3, and 100a4 or other processing units 200 to be coupled to three or more sides. For example, referring to FIG. 18, the battery modules 100a1, 100a2, and 100a3 may be coupled to three of the four sides of the processing unit 200. Alternatively, the battery modules 100a1, 100a2, and 100a3 may be coupled to three of the four side plates of the processing unit 200. In addition, the battery modules 100a1, 100a2, 100a3, and 100a4 and the processing unit 200 may be coupled via a coupling member 600.

[0092] The processing unit 200 may control the charging and discharging of the four battery modules 100 and may detect status information of the four battery modules 100a1, 100a2, 100a3, and 100a4. The battery pack may include double corner covers 500 for covering corners 111 of adjacent battery modules 100a1, 100a2, 100a3, and 100a4. The battery pack may also include single corner covers 400 and double corner covers 500 for covering corners 211 of the outermost battery modules 100a1, 100a2, 100a3, and 100a4 and the processing unit 200. The battery pack may also include five wall mount brackets 810 for installation. The battery modules 100a1, 100a2, 100a3, and 100a4 and the processing unit 200 may each include a front cover 300 on their front surface.

[0093] According to the configuration of the present invention, the positional relationship and coupling relationship between the battery module 100 and the processing unit 200 constituting the battery pack can be configured in various ways. This allows the battery pack to be configured to flexibly respond to various power amounts and outputs required. Furthermore, since the battery pack is configured to have various outer shapes, it is possible to eliminate restrictions on the space in which the battery pack is installed.

[0094] FIG. 19 is a perspective view showing a battery pack according to yet another embodiment of the present invention. Referring to FIG. 19, the battery pack according to yet another embodiment of the present invention may include one processing unit 200 and three battery modules 100. The one processing unit 200 and the three battery modules 100b1, 100b2, and 100b3 may be arranged in a row. The one processing unit 200 and the three battery modules 100b1, 100b2, and 100b3 may be connected via connecting members 600. The battery pack may also include single corner covers 400 and double corner covers 500 that cover the outermost battery modules 100b1, 100b2, and 100b3 and corners 211 of the processing unit 200. The battery pack may also include four wall mount brackets 810 for installation. In addition, the battery modules 100b1, 100b2, and 100b3 and the processing unit 200 may each have a front cover 300 on the front surface.

[0095] FIG. 20 is a perspective view showing a battery pack according to yet another embodiment of the present invention. Referring to FIG. 20, the battery pack according to yet another embodiment of the present invention may include one processing unit 200 and four battery modules 100c1, 100c2, 100c3, and 100c4. The processing unit 200 may control the charging and discharging of the four battery modules 100c1, 100c2, 100c3, and 100c4 and may detect status information of the four battery modules 100c1, 100c2, 100c3, and 100c4. The battery pack may include double corner covers 500 for covering corners 111 of adjacent battery modules 100c1, 100c2, 100c3, and 100c4. The battery pack may also include single corner covers 400 and double corner covers 500 that cover the outermost battery modules 100c1, 100c2, 100c3, and 100c4 and corners 211 of the processing unit 200. The battery pack may also include five wall mount brackets 810 for installation. The battery modules 100c1, 100c2, 100c3, and 100c4 and the processing unit 200 may also include front covers 300 on their front surfaces.

[0096] FIG. 21 is a perspective view showing a battery pack according to yet another embodiment of the present invention. Referring to FIG. 21, the battery pack according to yet another embodiment of the present invention may include one processing unit 200 and three battery modules 100. The one processing unit 200 and the three battery modules 100d1, 100d2, and 100d3 may be arranged in a row. The one processing unit 200 and the three battery modules 100d1, 100d2, and 100d3 may be connected via connecting members 600. The battery pack may also include single corner covers 400 and double corner covers 500 that cover the outermost battery modules 100d1, 100d2, and 100d3 and corners 211 of the processing unit 200. The battery pack may also include four wall mount brackets 810 for installation. In addition, the battery modules 100d1, 100d2, and 100d3 and the processing unit 200 may each have a front cover 300 on the front surface.

[0097] FIG. 22 is a perspective view showing a battery pack according to yet another embodiment of the present invention. Referring to FIG. 22, the battery pack according to yet another embodiment of the present invention may include one processing unit 200 and two battery modules 100e1 and 100e2. The processing unit 200 may control charging and discharging of the two battery modules 100e1 and 100e2 and may detect status information of the two battery modules 100e1 and 100e2. The battery pack may include a single-corner cover 400 and a double-corner cover 500 that cover corners 111 of the outermost battery modules 100e1 and 100e2 and a corner 211 of the processing unit 200. The battery pack may also include three wall mount brackets 810 for installation. The battery modules 100e1 and 100e2 and the processing unit 200 may each include a front cover 300 on their front surfaces.

[0098] FIG. 23 is a perspective view showing a battery pack according to yet another embodiment of the present invention. Referring to FIG. 23, the battery pack according to yet another embodiment of the present invention may include one processing unit 200 and three battery modules 100f1, 100f2, and 100f3. The processing unit 200 may control the charging and discharging of the three battery modules 100f1, 100f2, and 100f3 and may detect status information of the three battery modules 100f1, 100f2, and 100f3. The battery pack may include a single corner cover 400 and a double corner cover 500 that cover corners 111 of the outermost battery modules 100f1, 100f2, and 100f3 and a corner 211 of the processing unit 200. The battery pack may also include four wall mount brackets 810 for installation. In addition, the battery modules 100f1, 100f2, and 100f3 and the processing unit 200 may each have a front cover 300 on the front surface.

[0099] FIG. 24 is a perspective view showing a battery pack according to yet another embodiment of the present invention. Referring to FIG. 24, the battery pack according to yet another embodiment of the present invention may include one processing unit 200 and four battery modules 100g1, 100g2, 100g3, and 100g4. The processing unit 200 may control the charging and discharging of the four battery modules 100g1, 100g2, 100g3, and 100g4 and may detect status information of the four battery modules 100g1, 100g2, 100g3, and 100g4. The battery pack may include single corner covers 400 and double corner covers 500 that cover corners 111 of the outermost battery modules 100g1, 100g2, 100g3, and 100g4 and corners 211 of the processing unit 200. The battery pack may also include five wall mount brackets 810 for installation. In addition, the battery modules 100g1, 100g2, 100g3, and 100g4 and the processing unit 200 may each have a front cover 300 on the front surface.

[0100] According to such a configuration according to an embodiment of the present invention, the battery pack can be configured with various numbers of battery modules 100 depending on the required output and storage capacity. Furthermore, the battery pack can be configured to have various appearances depending on the constraints of the installation space.

[0101] Furthermore, according to such a configuration according to an embodiment of the present invention, even if the external appearance of the battery pack is changed, the coupling member 600 for coupling the battery module 100 and the processing unit 200 constituting the battery pack can be commonly used. Furthermore, even if the external appearance of the battery pack is changed, the single corner cover 400 and the double corner cover 500 for covering the corners 111, 211 of the battery module 100 and the processing unit 200 constituting the battery pack can be commonly used. As a result, the assembly and productivity of the battery pack can be improved.

[0102] Fig. 25 is a perspective view showing a battery pack according to yet another embodiment of the present invention. Fig. 26 is a view showing an exploded view of a portion of a battery pack according to yet another embodiment of the present invention. Fig. 27 is a view showing an enlarged view of a portion of a battery pack according to yet another embodiment of the present invention. Referring to Figs. 25 to 27, the battery module 100 of the battery pack according to yet another embodiment of the present invention may be located behind the processing unit 200.

[0103] A plurality of battery modules 100 may be stacked behind the processing unit 200. For example, referring to Fig. 25, the processing unit 200 and three battery modules 100 may be stacked along the front-to-rear direction or the X-axis direction.

[0104] 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 have 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 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 amount of power and output required, a battery pack may be composed of multiple battery modules 100. For example, as shown in FIG. 25, the battery pack may include two battery modules 100a and 100b.

[0105] 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 have 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 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.

[0106] For example, as shown in FIG. 25 , 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 obtain 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 have substantially the same shape.

[0107] According to such a configuration of an embodiment 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. In addition, 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 power amounts and outputs required. Furthermore, by configuring the battery pack to have a variable outer shape, it is possible to eliminate space constraints for installing the battery pack.

[0108] 25 to 27, a battery pack according to yet another embodiment of the present invention may include a first stand 920 fastened to the bottom of the processing unit 200 and a second stand 920 fastened to the bottom of the battery module 100.

[0109] The stand 920 may be provided on each of the processing units 200 or the battery modules 100. The multiple stands 920 may be connected, coupled, or fastened to each other by the coupling member 600.

[0110] According to this configuration of the embodiment of the present invention, the height of the battery pack can be increased by the stand 920. 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.

[0111] 28 is an exploded and enlarged view showing a portion of a battery pack according to another embodiment of the present invention. Referring to FIGS. 26 to 28, the battery pack according to another embodiment of the present invention may include a first corner cover 400 that is fastened to a coupling member 600 and covers at least one of a corner 111 of the battery module 100 to which the coupling member 600 is fastened and a corner 211 of the processing unit 200 to which the coupling member 600 is fastened.

[0112] The corner cover 400 may be coupled to the corner 211 of the processing unit 200. The corner cover 400 may also 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.

[0113] 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.

[0114] 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.

[0115] A plurality of battery modules 100 may be provided. 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. The coupling member 600 may be fastened to corners 111, 211 on one side and the other side 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.

[0116] 28, for example, 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. Also, 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.

[0117] With this configuration according to an embodiment of the present invention, the single corner cover 400 can prevent foreign objects from entering the battery pack, thereby improving the safety and lifespan of the battery pack.

[0118] 27 and 28, a battery pack according to yet another embodiment of the present invention may include a front cover 300 that is provided on the front side of the processing unit 200 and covers the front side of the corner cover 400.

[0119] The front cover 300 may be provided 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 a port 220 on the front surface or front plate. A cable 700 may be connected 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 front cover 300 may cover the port 120 and the cable 700 connected to the port 220.

[0120] 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.

[0121] According to this configuration of the embodiment 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. As a result, the safety and lifespan of the battery pack can be improved.

[0122] Fig. 29 is a diagram illustrating a portion of a cross-sectional configuration taken along section line DD' in Fig. 27. Referring to Fig. 29, corner cover 400 of a battery pack according to yet another embodiment of the present invention may include protrusion 450 that protrudes forward and is inserted into the inside of front cover 300.

[0123] 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.

[0124] 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.

[0125] According to this configuration of the embodiment 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. As a result, the safety and lifespan of the battery pack can be improved.

[0126] 31 is a view showing a corner cover 400 of a battery pack according to yet another embodiment of the present invention. Referring to FIGS. 29 and 31, the corner cover 400 according to yet another 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.

[0127] According to this configuration of an embodiment 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 were exposed to the outside, there is a risk of foreign objects entering and damaging the interior. The single-corner cover 400 is slidably coupled to the coupling member, thereby effectively closing gaps through which foreign objects can enter the battery pack. As a result, the interior of the battery module 100 and the processing unit 200 can be protected, and the safety and lifespan of the battery pack can be improved.

[0128] FIG. 30 is a diagram illustrating a portion of a cross-sectional configuration taken along line E-E' in FIG. 27. Referring to FIG. 30, a single-corner cover 400 of a battery pack according to yet another 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 421 formed along an edge of a 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.

[0129] According to this configuration of the embodiment of the present invention, the single corner cover 400 is placed on the first step portion 113 and the second step portion 213, thereby stably maintaining a coupled state with the battery module 100 or the processing unit 200. As a result, the stability of the battery pack can be improved.

[0130] 31 , a corner cover 400a according to yet another 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.

[0131] The single corner cover 400a may include protruding first guides 482 and first hooks 481 on its 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.

[0132] The single corner cover 400a may include protruding second guides 472 and second hooks 471 on its 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.

[0133] The first hook 481 may be fastened to the coupling member 600a. The first hook 481 may be fastened to a hole 601 of the coupling member 600a. The holes 601 of the coupling member 600a may be formed in a pair. A pair of first hooks 481 may be fastened to one hole 601. The coupling member 600a may be positioned between a pair of first guides 482. After being hook-coupled to the coupling 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 may guide the single corner cover 400a to slide along the coupling member 600a.

[0134] According to this configuration of the embodiment of the present invention, the single corner cover 400a can be easily hook-coupled to the coupling member 600a without providing a separate fastening member, thereby improving the assembly and productivity of the battery pack.

[0135] 32 is a diagram showing a corner cover 400b of a battery pack according to yet another embodiment of the present invention. Referring to FIG. 32, the corner cover 400b according to yet another embodiment of the present invention may include hooks 471, 481 protruding from the inner surface and coupled to coupling members 600a, 600b.

[0136] The second hook 471 may be fastened to the coupling member 600b. The second hook 471 may be fastened to a hole 601 of the coupling member 600a. The holes 601 of the coupling member 600a may be formed in a pair. A pair of second hooks 471 may be fastened to one hole 601. The coupling member 600a may be positioned between a pair of second guides 472. After being hook-coupled to the coupling 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 may guide the single corner cover 400b to slide along the coupling member 600a.

[0137] 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 open to the front side 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 in the production process of the battery module 100 and the processing unit 200.

[0138] According to this configuration of the embodiment of the present invention, the single corner cover 400b can be easily hook-coupled to the coupling member 600a without providing a separate fastening member, thereby improving the assembly and productivity of the battery pack.

[0139] Referring to FIG. 32, a battery pack according to yet another embodiment of the present invention may include a second corner cover 400b that is fastened to a coupling member 600a and covers a corner 111 of the battery module 100 to which the coupling member 600a is fastened and a corner 211 of the processing unit 200 to which the coupling member 600a is fastened.

[0140] The first corner cover 400a may cover one side of the connecting member 600a, and the second corner cover 400b may cover the other side of the connecting member 600a. The first corner cover 400a and the second corner cover 400b may be the same component or part.

[0141] 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.

[0142] According to this configuration of the present invention, two single corner covers 400a, 400b are coupled to one coupling member 600a, thereby reducing the number of parts, thereby improving the assembly and productivity of the battery pack.

[0143] Referring to FIG. 32, a first corner cover of a battery pack according to yet another embodiment of the present invention may include a groove formed on the rear side, and a second corner cover may include a second protrusion that protrudes on the front side and is inserted into the groove.

[0144] 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 slid 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.

[0145] This configuration according to an embodiment 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.

[0146] 27, 28, and 32, a processing unit 200 of a battery pack according to yet another embodiment of the present invention may include a first opening 212, and a battery module 100a may include a second opening 112. The battery pack may also include a cable 700 passing through the first opening 212 and the second opening 112. A second corner cover 400b may also cover the second opening 112 and the cable 700.

[0147] The cable 700 may 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 may cover the corner 211 of the processing unit 200 and the corner 111 of the battery module 100a. The single-corner covers 400a, 400b may 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 may also cover the connecting members 600a, 600b. The single-corner covers 400a, 400b may also cover the cable 700.

[0148] According to this configuration of the embodiment of the present invention, the single corner covers 400a, 400b can prevent the corners 211, 111 of the processing unit 200 or the battery module 100a and 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.

[0149] Fig. 33 is a diagram showing a corner cover 400c of a battery pack according to yet another embodiment of the present invention. Fig. 34 is a diagram showing a corner cover 400c and a mounting bracket 910 of a battery pack according to yet another embodiment of the present invention. Referring to Figs. 28, 33, and 34, a battery pack according to yet another 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.

[0150] 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.

[0151] FIG. 35 is a perspective view showing a battery pack according to yet another embodiment of the present invention. Referring to FIG. 35, the battery pack according to yet another embodiment of the present invention may include one processing unit 200 and three battery modules 100h1, 100h2, and 100h3. The processing unit 200 may control the charging and discharging of the three battery modules 100h1, 100h2, and 100h3 and may detect status information of the three battery modules 100h1, 100h2, and 100h3. The battery pack may include a single-corner cover 400 that covers corners 111 of the outermost battery modules 100h1, 100h2, and 100h3 and a corner 211 of the processing unit 200. The battery pack may also include two mounting brackets 910 for installation. The processing unit 200 may also include a front cover 300 on its front surface.

[0152] FIG. 36 is a perspective view showing a battery pack according to yet another embodiment of the present invention. Referring to FIG. 36, the battery pack according to yet another embodiment of the present invention may include one processing unit 200 and four battery modules 100i1, 100i2, 100i3, and 100i4. The processing unit 200 may control the charging and discharging of the four battery modules 100i1, 100i2, 100i3, and 100i4 and may detect status information of the four battery modules 100i1, 100i2, 100i3, and 100i4. The battery pack may include a single corner cover 400 and a double corner cover 500 that cover corners 111 of the outermost battery modules 100i1, 100i2, 100i3, and 100i4 and a corner 211 of the processing unit 200. The battery pack may also include two mounting brackets 910 for installation. In addition, the processing unit 200 and the battery module 100i4 may each have a front cover 300 on the front surface.

[0153] FIG. 37 is a perspective view showing a battery pack according to yet another embodiment of the present invention. Referring to FIG. 37, the battery pack according to yet another embodiment of the present invention may include one processing unit 200 and four battery modules 100j1, 100j2, 100j3, and 100j4. The processing unit 200 may control the charging and discharging of the four battery modules 100j1, 100j2, 100j3, and 100j4 and may detect status information of the four battery modules 100j1, 100j2, 100j3, and 100j4. The battery pack may include single-corner covers 400 and double-corner covers 500 that cover corners 111 of the outermost battery modules 100j1, 100j2, 100j3, and 100j4 and corners 211 of the processing unit 200. The battery pack may also include two mounting brackets 910 for installation. In addition, the processing unit 200 and the battery module 100j4 may each have a front cover 300 on the front surface.

[0154] The above-mentioned plurality of battery modules 100, 100a, 100b, 100a1, 100a2, 100a3, 100a4, 100b1, 100b2, 100b3, 100c1, 100c2, 100c3, 100c4, 100d1, 100d2, 100d3, 100e1, 100e2, 100f1, 100f2, 10 Although 100f2, 100f3, 100g1, 100g2, 100g3, 100g4, 100h1, 100h2, 100h3, 100i1, 100i2, 100i3, 100i4, 100j1, 100j2, 100j3, and 100j4 are designated by different reference numerals for ease of explanation, they are components having the same structure and shape. Furthermore, although ... and 100g4 are designated by different reference numerals for ease of explanation, they are components having the same structure and shape.

[0155] An energy storage system according to an embodiment of the present invention includes one or more battery packs according to the above-described embodiments of the present invention. Furthermore, an energy storage system according to an embodiment of the present invention may further include, in addition to such a battery pack, typical components included in an energy storage system. In particular, an energy storage system according to an embodiment of the present invention may be a residential (building) energy storage system used to store energy in a home, building, or the like.

[0156] In this specification, terms indicating directions such as up, down, left, right, front, and rear are used, but it will be obvious to those skilled in the art 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.

[0157] 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.

[0158] Furthermore, the present invention preferably includes the following examples. [Section 1] A battery module; a processing unit electrically connected to the battery module and controlling charging and discharging of the battery module; Including, At least one of the battery module and the processing unit A battery pack configured so that other battery modules or other processing units can be connected to two or more sides. [Section 2] At least one of the battery module and the processing unit Item 1. The battery pack according to item 1, configured so that other battery modules or other processing units can be connected to three or more sides. [Section 3] Item 1. The battery pack according to item 1, further comprising a coupling member fastened to the battery module and the processing unit. [Section 4] The coupling member is Item 4. The battery pack according to item 3, wherein the battery pack is fastened to a corner formed by two side plates of the battery module and a corner formed by two side plates of the processing unit. [Section 5] The battery module includes: Item 5. The battery pack according to item 4, located on one side of the processing unit. [Section 6] a first connecting bar fastened to a back plate of the processing unit; a first wall mount bracket coupled to the first coupling bar; a second connecting bar fastened to the back plate of the battery module; a second wall mount bracket coupled to the second coupling bar; Item 6. The battery pack according to item 5, further comprising: [Section 7] The battery module includes: Item 5. The battery pack according to item 4, which is located behind the processing unit. [Section 8] a first stand fastened to a lower portion of the processing unit; a second stand fastened to a lower portion of the battery module; Item 8. The battery pack according to item 7, further comprising: [Section 9] Item 8. The battery pack described in item 7 further includes a first corner cover fastened to the connecting member to cover at least one of the corner of the battery module to which the connecting member is fastened and the corner of the processing unit to which the connecting member is fastened. [Section 10] Item 9. The battery pack described in item 8 further includes a second corner cover fastened to the connecting member to cover the corner of the battery module to which the connecting member is fastened and the corner of the processing unit to which the connecting member is fastened. [Section 11] Item 11. An energy storage system comprising the battery pack of any one of items 1 to 10. [Explanation of symbols]

[0159] 100 Battery Module 110 Housing 111 First Corner 112 Opening 112 First Opening 113 First step 120 port 200 Processing Unit 210 Housing 211 2nd corner 212 Second Opening 213 Second step 220 port 300 front cover 400 Corner Cover 410 Part 1 420 Part 2 430 Guide 440 Hook 450 Protrusion 460 Groove 471 Second Hook 472 Second Guide 481 First Hook 482 First Guide 500 double corner cover 520 First Hook 530 Second Hook 540 Support part 600 Connecting member 700 Cable 810 Wall Mount Bracket 811 Locking part 820 Joint Bar 910 Bracket 911 Joint 920 Stand S Fastening member

Claims

1. A battery module; a processing unit electrically connected to the battery module and controlling charging and discharging of the battery module; a coupling member fastened to a first corner formed by the two side plates of the battery module and a second corner formed by the two side plates of the processing unit; a corner cover fastened to the connecting member and covering the first corner and the second corner; Including, At least one of the battery module and the processing unit Two or more sides are configured to be connectable to other battery modules or other processing units, the battery module and the processing unit are electrically connected to each other by a cable passing through an opening formed in the first corner and an opening formed in the second corner; The corner cover covers the cable, the first corner opening, and the second corner opening of the battery pack.

2. At least one of the battery module and the processing unit The battery pack according to claim 1 , wherein other battery modules or other processing units can be connected to three or more sides of the battery pack.

3. The battery module includes: The battery pack of claim 1 , located on one side of the processing unit.

4. a first connecting bar fastened to a back plate of the processing unit; a first wall mount bracket coupled to the first coupling bar; a second connecting bar fastened to the back plate of the battery module; a second wall mount bracket coupled to the second coupling bar; 4. The battery pack of claim 3, further comprising:

5. The battery module includes: The battery pack of claim 1 , wherein the battery pack is located behind the processing unit.

6. a first stand fastened to a lower portion of the processing unit; a second stand fastened to a lower portion of the battery module; 6. The battery pack of claim 5, further comprising:

7. An energy storage system comprising a battery pack according to any one of claims 1 to 6.

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