Battery assembly

Abstract

A battery assembly is disclosed. A battery assembly according to one embodiment of the present invention may comprise: a substrate; a first side wall coupled to an upper surface of the substrate and extending in a longitudinal direction; a second side wall coupled to an upper surface of the substrate, extending in the longitudinal direction, and spaced apart from the first side wall; a plurality of battery cells positioned between the first side wall and the second side wall and stacked in a lateral direction; and a top cover having one side coupled to the first side wall and the other side coupled to the second side wall.

Description

Technical Field

[0001] This disclosure relates to a battery assembly.

[0002] This application is based on and claims priority to Korean Patent Application No. 10-2023-0154000, filed with the Korean Intellectual Property Office on November 8, 2023, the disclosure of which is incorporated herein by reference in its entirety. Background Technology

[0003] Currently, commercially available rechargeable batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium rechargeable batteries. Among them, lithium rechargeable batteries have little or no memory effect, so they have received more attention than nickel-based rechargeable batteries because their advantages are that they can be recharged whenever convenient, have a very low self-discharge rate, and high energy density.

[0004] Recently, with the emergence of issues such as power shortages and environmental energy, energy storage systems (ESS) for storing generated electricity have received increasing attention. For example, smart grid systems have been proposed as one method for controlling electricity supply and demand. Consumer electricity consumption is not always constant and can fluctuate frequently. A representative example is the rapid increase in electricity consumption during the summer afternoon due to air conditioning use, followed by a rapid decrease at night. While electricity consumption is not constant and can fluctuate frequently for consumers, it is practically difficult for electricity suppliers to match this consumption, even with some control over electricity production. Therefore, this imbalance between electricity supply and consumption can lead to either oversupply or shortages, and smart grid systems can flexibly store and control electricity to address these issues. A smart grid system is a concept that stores electricity when there is a surplus or in the presence of a surplus, and supplies the stored electricity when there is a shortage or in areas of shortage. One of the key components for building such a smart grid system is an energy storage system for storing electricity. Furthermore, with the active commercialization of electric vehicles, energy storage systems can also be used in facilities for charging electric vehicles, such as charging stations.

[0005] Such energy storage systems can include multiple battery packs or battery modules. To reduce the weight of the energy storage system and increase its energy density, a structure is needed that can stably accommodate individual battery cells while simplifying the structure of the battery modules. Summary of the Invention

[0006] Technical issues

[0007] This disclosure is designed to address these and other problems.

[0008] This disclosure also aims to provide a battery assembly in which a plurality of battery cells are stably fixed.

[0009] This disclosure also aims to provide a battery assembly with a reduced number of components and a simplified structure.

[0010] This disclosure also aims to provide battery components with increased energy density.

[0011] Technical solution

[0012] In one aspect of this disclosure, a battery assembly is provided, the battery assembly comprising: a substrate; a first sidewall attached to an upper surface of the substrate and extending in a front-rear direction; a second sidewall attached to the upper surface of the substrate and extending in a front-rear direction, the second sidewall being spaced apart from the first sidewall; a plurality of battery cells positioned between the first sidewall and the second sidewall and stacked in a left-right direction; and a top cover having one side attached to the first sidewall and another side attached to the second sidewall.

[0013] Furthermore, the first sidewall and the second sidewall can compress the plurality of battery cells in the left-right direction.

[0014] Furthermore, the battery assembly may further include: a first fastening member configured to fasten the first sidewall and the top cover; and a second fastening member configured to fasten the second sidewall and the top cover.

[0015] Furthermore, the battery assembly may further include: a third fastening member configured to fasten the first sidewall and the substrate; and a fourth fastening member configured to fasten the second sidewall and the substrate.

[0016] Additionally, the battery assembly may further include a front cover positioned in front of the plurality of battery cells and having one side connected to the first sidewall and the other side connected to the second sidewall.

[0017] In addition, the front cover may include: a body configured to cover between the first sidewall and the second sidewall; a first connecting portion extending rearward from the body and configured to cover the outer surface of the first sidewall; and a second connecting portion extending rearward from the body and configured to cover the outer surface of the second sidewall.

[0018] Furthermore, the battery assembly may further include: a fifth fastening member configured to fasten the first connecting portion and the first sidewall; and a sixth fastening member configured to fasten the second connecting portion and the second sidewall.

[0019] Additionally, the plurality of battery cells may constitute a first battery array, and the battery assembly may include: a third sidewall, which is attached to the upper surface of the substrate and positioned behind the first sidewall and extending in the front-rear direction; a fourth sidewall, which is attached to the upper surface of the substrate and positioned behind the second sidewall and extending in the front-rear direction; and a second battery array, which is positioned between the third sidewall and the fourth sidewall and has a plurality of battery cells stacked in the left-right direction.

[0020] Additionally, one side of the top cover can be connected to the third sidewall, and the other side of the top cover can be connected to the fourth sidewall.

[0021] Furthermore, the battery assembly may further include: a first bracket having one side connected to the first sidewall and the other side connected to the third sidewall; and a second bracket having one side connected to the second sidewall and the other side connected to the fourth sidewall.

[0022] Additionally, the battery assembly may further include a rear cover positioned behind the second battery array and having one side connected to the third sidewall and the other side connected to the fourth sidewall.

[0023] According to one aspect of this disclosure, the battery rack may include the battery assembly of this disclosure.

[0024] An energy storage system according to one aspect of this disclosure may include the battery assembly of this disclosure.

[0025] Beneficial effects

[0026] According to at least one embodiment of this disclosure, multiple battery cells can be stably fixed.

[0027] According to at least one embodiment of this disclosure, the number of components in a battery assembly can be reduced, and the structure can be simplified.

[0028] According to at least one embodiment of this disclosure, the energy density of a battery assembly can be increased. Attached Figure Description

[0029] The accompanying drawings illustrate preferred embodiments of the present disclosure and are used together with the foregoing disclosure to provide a further understanding of the technical features of the present disclosure; therefore, the present disclosure is not to be construed as limited to the drawings.

[0030] Figure 1 This is a diagram illustrating a battery assembly according to an embodiment of the present disclosure.

[0031] Figure 2 It is shown Figure 1 A diagram of the battery assembly, with some components disassembled.

[0032] Figure 3 It is shown Figure 2 The diagram shows the substrate, with some components disassembled.

[0033] Figure 4 It is shown Figure 3 A magnified view of part A.

[0034] Figure 5 It is shown Figure 2 A diagram of the substrate.

[0035] Figure 6 It is shown Figure 1 A diagram of some components of the battery assembly.

[0036] Figure 7 It is shown Figure 2 A diagram of the first battery array, with some components disassembled.

[0037] Figure 8 It is shown Figure 2 A diagram of the first battery array.

[0038] Figure 9 Shown from different directions Figure 8 A diagram of the first battery array.

[0039] Figure 10 and Figure 11 It is shown Figure 6 A diagram showing the connection between some components of the battery assembly and the first battery array.

[0040] Figure 12 It is shown Figure 11 A magnified view of part B.

[0041] Figure 13 It is shown Figure 11 A magnified view of part C.

[0042] Figure 14 It is along Figure 11 The cross-sectional view taken by the cutting line D-D'.

[0043] Figure 15 and Figure 16 It is shown Figure 11 A diagram showing the connection between some components of the battery assembly and the insulating sheet.

[0044] Figure 17 It is along Figure 16 The cross-sectional view taken by the cutting line E-E'.

[0045] Figure 18 It is shown Figure 16 A diagram showing the connection between some components of the battery assembly and the second battery array.

[0046] Figure 19 It is shown Figure 18 A diagram showing the connection between some components of the battery assembly and the first and second brackets.

[0047] Figure 20 and Figure 21 It is shown Figure 19 The diagram shows the connection between some components of the battery assembly and the front and rear covers.

[0048] Figure 22 It is shown Figure 21 A magnified view of part F.

[0049] Figure 23 It is shown Figure 21 A magnified view of part G.

[0050] Figure 24 and Figure 25 It is shown Figure 21 A diagram showing the connection between some components of the battery assembly and the top cover.

[0051] Figure 26 It is along Figure 25 The cross-sectional view taken by the cutting line H-H'.

[0052] Figure 27 It is along Figure 25 The cross-sectional view taken by the cutting line I-I'. Detailed Implementation

[0053] Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Before the description, it should be understood that the terminology used in the specification and appended claims should not be construed as limited to its general and dictionary meanings, but rather as interpreted based on the meanings and concepts corresponding to the technical aspects of the present disclosure, on the basis of the principle that allows the inventors to appropriately define the terminology for best interpretation.

[0054] Therefore, the description presented herein is merely a preferred example for illustrative purposes and is not intended to limit the scope of this disclosure. It should be understood that other equivalents and modifications may be made thereto without departing from the scope of this disclosure.

[0055] Figure 1 This is a diagram illustrating a battery assembly according to an embodiment of the present disclosure. Figure 2 It is shown Figure 1 A diagram of the battery assembly, with some components disassembled. (Reference) Figure 1 and Figure 2 According to embodiments of the present disclosure, a battery assembly may include a substrate 110, a first sidewall 121, a second sidewall 122, a plurality of battery cells 200, and a top cover 160.

[0056] The substrate 110 may have a rectangular shape. The substrate 110 may form the appearance of a battery assembly.

[0057] The first sidewall 121 can be connected, fastened, attached, or fixed to the upper surface of the substrate 110. The first sidewall 121 can extend along the front-back direction or the X-axis direction. The first sidewall 121 can form the appearance of the battery assembly.

[0058] The second sidewall 122 can be connected, fastened, attached, or fixed to the upper surface of the substrate 110. The second sidewall 122 can extend along the front-back direction or the X-axis direction. The second sidewall 122 can be spaced apart from the first sidewall 121 in the left-right direction or the Y-axis direction. Moreover, the first sidewall 121 and the second sidewall 122 can be opposite to each other. Alternatively, the first sidewall 121 and the second sidewall 122 can face each other. The second sidewall 122 can form the appearance of the battery assembly.

[0059] Multiple battery cells 200 can be configured. In this case, battery cell 200 can refer to a secondary battery. Furthermore, battery cell 200 can be a secondary battery with a pouch shape. Battery cell 200 can extend in the front-back direction or the X-axis direction. Multiple battery cells 200 can be stacked in the left-right direction or the Y-axis direction. The multiple battery cells 200 can be positioned between the first sidewall 121 and the second sidewall 122.

[0060] The top cover 160 may be plate-shaped. The top cover 160 may be rectangular. The top cover 160 may cover the upper surface of the plurality of battery cells 200. One side of the top cover 160 may be fastened, connected, attached, or fixed to a first sidewall 121. Additionally, the other side of the top cover 160 may be fastened, connected, attached, or fixed to a second sidewall 122. The top cover 160 may form the appearance of the battery assembly.

[0061] The plurality of battery cells 200 may be surrounded by a substrate 110, a first sidewall 121, a second sidewall 122 and a top cover 160.

[0062] According to this configuration, the structure of the battery assembly can be simplified. Since the substrate 110, the first sidewall 121, the second sidewall 122, and the top cover 160 directly accommodate the plurality of battery cells 200, a separate housing for accommodating the plurality of battery cells 200 is not required. Therefore, the number of components in the battery assembly can be reduced. Furthermore, the productivity of the battery assembly can be improved. In addition, the energy density of the battery assembly can be increased.

[0063] Figure 3 It is shown Figure 2 The diagram shows the substrate 110, in which some components are disassembled. Figure 4 It is shown Figure 3 A magnified view of part A. Figure 5 It is shown Figure 2 Figure 110 of substrate.

[0064] refer to Figures 3 to 5 The substrate 110 may include an upper plate 111 and a lower plate 112. The upper plate 111 may be coupled, attached, bonded, fastened, or fixed to the upper surface of the lower plate 112. The lower plate 112 may include a bent portion 112a. The bent portion 112a may protrude in a downward direction or in a Z-axis direction. The bent portion 112a may form a flow path 112b.

[0065] The upper plate 111 may have a port 111a on its upper surface. The ports 111a may be configured as a pair. Cooling fluid introduced through one port 111a may flow along the flow path 112b and may be discharged through the other port 111a. Figure 4 The arrows in the diagram exemplify the movement of the cooling fluid.

[0066] Figure 6 It is shown Figure 1 Diagrams of some components of the battery assembly. (Reference) Figure 6 The battery assembly according to embodiments of the present disclosure may include a third fastening member S3 and a fourth fastening member S4.

[0067] The third fastening member S3 can fasten the first sidewall 121 and the substrate 110. The third fastening member S3 can penetrate the substrate 110 and be inserted into the lower part of the first sidewall 121. Multiple third fastening members S3 can be provided. Multiple third fastening members S3 can be arranged along the longitudinal direction of the first sidewall 121.

[0068] The fourth fastening member S4 can fasten the second sidewall 122 and the substrate 110. The fourth fastening member S4 can penetrate the substrate 110 and be inserted into the lower part of the second sidewall 122. Multiple fourth fastening members S4 can be provided. Multiple fourth fastening members S4 can be arranged along the longitudinal direction of the second sidewall 122.

[0069] According to this configuration, the first sidewall 121 and the second sidewall 122 can be stably fixed and supported. Therefore, multiple battery assemblies can be stably fixed.

[0070] Figure 7 It is shown Figure 2 The diagram shows the first battery array 300, with some components disassembled. Figure 8 It is shown Figure 2 The diagram shows the first battery array 300. Figure 9 Shown from different directions Figure 8 The diagram shows the first battery array 300.

[0071] refer to Figures 7 to 9 The plurality of battery cells 200 can constitute a battery array. Each battery cell 200 may include a receiving portion 210, a sealing portion, and electrode leads 220. The receiving portion 210 can accommodate electrode assemblies. The receiving portion 210 may extend in a front-rear direction or an X-axis direction. The sealing portion may be formed at the periphery of the receiving portion 210. Furthermore, the sealing portion may protrude forward and backward from the receiving portion 210. The electrode leads 220 may protrude forward and backward from either the sealing portion or the receiving portion 210.

[0072] Furthermore, the battery array may include a pad 310. The pad 310 may cover the receiving portion 210. The pad 310 may be elastic. Furthermore, the pad 310 may be electrically insulating. For example, the pad 310 may include a silicone resin material. Moreover, the pad 310 may extend in the front-back direction or the X-axis direction. Multiple pads 310 may be provided. Multiple pads 310 may be positioned between the multiple battery cells 200. The multiple pads 310 and the multiple battery cells 200 may be stacked in the left-right direction or the Y-axis direction.

[0073] Busbar assemblies 320 can be disposed on the front and rear sides of the battery array. Each busbar assembly 320 may include a busbar frame 321, busbars 322, and interconnect boards (ICBs) 323. Multiple interconnect boards 323 may be provided. Busbars 322 can be electrically connected to the electrode leads 220 of the plurality of battery cells 200. Busbars 322 can be mounted, connected, fastened, fixed, or attached to the busbar frame 321. Interconnect boards 323 can be mounted, connected, fastened, fixed, or attached to the busbar frame 321. Interconnect boards 323 can be electrically connected to the busbars 322.

[0074] The battery array may include sensing lines 325. Sensing lines 325 may extend in a front-to-back direction or an X-axis direction. Sensing lines 325 may be electrically connected to an interconnect plate 323 of the busbar assembly 320 at the front side and to an interconnect plate 323 of the busbar assembly 320 at the rear side. Sensing lines 325 and interconnect plates 323 may transmit information from the plurality of battery cells 200. Multiple sensing lines 325 may be provided.

[0075] Furthermore, the battery array may include a temperature sensor 324. The temperature sensor 324 may be mounted in the busbar frame 321 of the front busbar assembly 320. The temperature sensor 324 can obtain temperature information from the plurality of battery cells 200. Multiple temperature sensors 324 may be configured.

[0076] Figure 10 and Figure 11 It is shown Figure 6 A diagram showing the connection of some components of the battery assembly with the first battery array 300.

[0077] refer to Figure 10 and Figure 11 The first battery array 300 can be positioned between the first sidewall 121 and the second sidewall 122. Furthermore, the first battery array 300 can be fixed between the first sidewall 121 and the second sidewall 122. The first sidewall 121 and the second sidewall 122 can provide a compressive force (CF) that compresses the first battery array 300 or the plurality of battery cells 200 in the left-right direction.

[0078] Furthermore, the heat transfer member 113 can be positioned between the first battery array 300 and the substrate 110. The heat transfer member 113 may include a material with high thermal conductivity. The heat transfer member 113 can transfer heat generated from the first battery array 300 to the substrate 110.

[0079] According to this configuration of the present disclosure, the first battery array 300 or the plurality of battery cells 200 can be stably fixed. By fixing the plurality of battery cells 200 to the first sidewall 121 and the second sidewall 122 that form the appearance of the battery assembly, the number of components of the battery assembly can be reduced and the structure can be simplified.

[0080] Figure 12 It is shown Figure 11 A magnified view of part B. Figure 13 It is shown Figure 11 A magnified view of part C. Figure 14 It is along Figure 11 The cross-sectional view taken by the cutting line D-D'. (Reference) Figures 11 to 14The busbar frame 321 of the front busbar assembly 320 can be connected, fastened, fixed, or attached to one side of the first sidewall 121. For example, the fastening member S can fasten the busbar frame 321 and the first sidewall 121. Furthermore, the other side of the busbar frame 321 of the front busbar assembly 320 can be connected, fastened, fixed, or attached to the second sidewall 122. For example, the fastening member S can fasten the busbar frame 321 and the second sidewall 122.

[0081] Figure 15 and Figure 16 It is shown Figure 11 The diagram shows the connection between some components of the battery assembly and the insulating sheet 330. Figure 17 It is along Figure 16 The cross-sectional view taken by the cutting line E-E'.

[0082] refer to Figures 15 to 17 One side of the busbar frame 321 of the rear busbar assembly 320 can be connected, fastened, fixed, or attached to the first sidewall 121. Moreover, the other side of the busbar frame 321 of the rear busbar assembly 320 can be connected, fastened, fixed, or attached to the second sidewall 122.

[0083] The insulating sheet 330 can be positioned at the rear of the busbar assembly 320. The insulating sheet 330 can cover the busbar assembly 320 at the rear. The insulating sheet 330 can be electrically insulating. One side of the insulating sheet 330 can be connected, fastened, fixed, or attached to the first sidewall 121. In addition, the other side of the insulating sheet 330 can be connected, fastened, fixed, or attached to the second sidewall 122.

[0084] For example, the fastening member S can fasten the busbar frame 321 and the insulating sheet 330 to the first sidewall 121. Moreover, the fastening member S can fasten the busbar frame 321 and the insulating sheet 330 to the second sidewall 122.

[0085] Figure 18 It is shown Figure 16 A diagram showing the connection between some components of the battery assembly and the second battery array 400. Figure 19 It is shown Figure 18 The diagram shows the connection between some components of the battery assembly and the first support 131 and the second support 132. The battery assembly may include a second battery array 400. The second battery array 400 may include a configuration substantially the same as the first battery array 300. Moreover, the second battery array 400 may have a structure substantially the same as the first battery array 300. The second battery array 400 may include a plurality of battery cells 200 and a plurality of pads 310 stacked in the left-right direction or the Y-axis direction.

[0086] The second battery array 400 may be located at the rear of the first battery array 300. Furthermore, the second battery array 400 may include an insulating sheet 330 at its front. The insulating sheet 330 prevents short circuits between the first battery array 300 and the second battery array 400.

[0087] The third sidewall 123 can be connected, fastened, attached, or fixed to the upper surface of the substrate 110. The third sidewall 123 can have a structure substantially the same as the first sidewall 121. The third sidewall 123 can extend along the front-back direction or the X-axis direction. The third sidewall 123 can form the appearance of the battery assembly. The third sidewall 123 can be located at the rear of the first sidewall 121.

[0088] The fourth sidewall 124 can be connected, fastened, attached, or fixed to the upper surface of the substrate 110. The fourth sidewall 124 can have a structure substantially the same as the second sidewall 122. The fourth sidewall 124 can extend along the front-back direction or the X-axis direction. The fourth sidewall 124 can be spaced apart from the third sidewall 123 in the left-right direction or the Y-axis direction. Moreover, the third sidewall 123 and the fourth sidewall 124 can be opposite to each other. Alternatively, the third sidewall 123 and the fourth sidewall 124 can face each other. The fourth sidewall 124 can form the appearance of the battery assembly. The fourth sidewall 124 can be located at the rear of the second sidewall 122.

[0089] The second battery array 400 can be positioned between the third sidewall 123 and the fourth sidewall 124. Furthermore, the second battery array 400 can be fixed between the third sidewall 123 and the fourth sidewall 124. The third sidewall 123 and the fourth sidewall 124 can provide compressive force (CF) to compress the first battery array 300 or the plurality of battery cells 200 in the left-right direction.

[0090] Furthermore, the heat transfer member 113 can be positioned between the second battery array 400 and the substrate 110. The heat transfer member 113 can transfer heat generated from the second battery array 400 to the substrate 110.

[0091] According to this configuration of the present disclosure, the second battery array 400 can be stably fixed. Since the second battery array 400 is fixed to the third sidewall 123 and the fourth sidewall 124 that form the appearance of the battery assembly, the number of components of the battery assembly can be reduced and the structure can be simplified.

[0092] Figure 20 It is shown Figure 19 A diagram showing the connection between some components of the battery assembly and brackets 131 and 132. (See reference) Figure 19 and Figure 20The first bracket 131 may have a flat shape. The first bracket 131 may have one side connected to the first sidewall 121 and another side connected to the third sidewall 123. A fastening member S may fasten the first bracket 131 and the rear side of the first sidewall 121. Furthermore, the fastening member S may fasten the first bracket 131 and the front side of the third sidewall 123. The first bracket 131 may form the appearance of a battery assembly.

[0093] The second bracket 132 may have a shape substantially the same as the first bracket 131. The second bracket 132 may have one side connected to the second sidewall 122 and the other side connected to the fourth sidewall 124. A fastening member S may fasten the rear side of the second bracket 132 and the third sidewall 123. Furthermore, the fastening member S may fasten the front side of the second bracket 132 and the fourth sidewall 124. The second bracket 132 may form the appearance of the battery assembly.

[0094] According to this configuration, the rigidity of the battery assembly can be improved. Furthermore, the first sidewall 121 to the fourth sidewall 124 can be stably fixed. As a result, the first battery array 300 and the second battery array 400 can be stably fixed.

[0095] Figure 20 and Figure 21 It is shown Figure 19 The diagram shows the connection between some components of the battery assembly and the front cover 140 and the rear cover 150. Figure 22 It is shown Figure 21 A magnified view of part F. Figure 23 It is shown Figure 21 A magnified view of part G.

[0096] refer to Figures 20 to 23 The battery assembly according to embodiments of the present disclosure may include a front cover 140. The front cover 140 may be positioned in front of the plurality of battery cells 200 or the first battery array 300. The front cover 140 may cover the busbar assembly 320 at its front side. The front cover 140 may have one side connected to a first sidewall 121 and another side connected to a second sidewall 122. The front cover 140 may form the appearance of the battery assembly.

[0097] According to this configuration of the present disclosure, since the front cover 140 is fastened to the first sidewall 121 and the second sidewall 122, the structure of the battery assembly can be simplified and the number of components can be reduced.

[0098] refer to Figures 20 to 23 The front cover 140 may include a body 143, a first connecting portion 141, and a second connecting portion 142. The body 143 may have a flat shape. The body 143 may cover the space between the first sidewall 121 and the second sidewall 122. Furthermore, the body 143 may cover the busbar assembly 320 at the front.

[0099] The first connecting portion 141 may be formed on the right side of the body 143. The first connecting portion 141 may extend rearward from the body 143. The first connecting portion 141 may cover the outer surface of the first sidewall 121.

[0100] The second connecting portion 142 may be formed on the left side of the body 143. The second connecting portion 142 may extend rearward from the body 143. The second connecting portion 142 may cover the outer surface of the second sidewall 122.

[0101] According to the configuration of this disclosure, the front cover 140 can be stably connected to the first sidewall 121 and the second sidewall 122. Therefore, the front cover 140 can provide force to compress the first battery array 300.

[0102] refer to Figures 20 to 23 The fifth fastening member S5 can fasten the first connecting part 141 and the first side wall 121. Multiple fifth fastening members S5 can be provided.

[0103] Furthermore, the sixth fastening member S6 can fasten the second connecting portion 142 and the second sidewall 122. Multiple sixth fastening members S6 can be provided.

[0104] According to the configuration of this disclosure, the front cover 140 can be stably connected to the first sidewall 121 and the second sidewall 122.

[0105] refer to Figures 20 to 23 The battery assembly according to embodiments of the present disclosure may include a rear cover 150. The rear cover 150 may include a shape and structure very similar to the front cover 140. The rear cover 150 may be positioned at the rear of the plurality of battery cells 200 or the second battery array 400. The rear cover 150 may cover the busbar assembly 320 at the rear side of the second battery array 400. The rear cover 150 may have one side connected to a third sidewall 123 and another side connected to a fourth sidewall 124. The rear cover 150 may form the appearance of the battery assembly.

[0106] The rear cover 150 may include a main body 143 and a pair of connecting portions. Each connecting portion may cover the outer surface of the third sidewall 123 and the outer surface of the fourth sidewall 124. Fastening members S may fasten the third sidewall 123 and the rear cover 150. Moreover, fastening members S may fasten the fourth sidewall 124 and the rear cover 150.

[0107] According to this configuration of the present disclosure, since the rear cover 150 is attached to the third sidewall 123 and the fourth sidewall 124, the structure of the battery assembly can be simplified and the number of components can be reduced. Therefore, the rear cover 150 can provide force to compress the second battery array 400.

[0108] Figure 24 and Figure 25 It is shown Figure 21 The diagram shows the connection between some components of the battery assembly and the top cover 160. Figure 26 It is along Figure 25 The cross-sectional view taken by the cutting line H-H'. Figure 27 It is along Figure 25 The cross-sectional view taken by the cutting line I-I'.

[0109] refer to Figures 24 to 27 The top cover 160 of the battery assembly according to embodiments of the present disclosure may include fastening, coupling, attaching, or securing to one side of the first sidewall 121. Furthermore, the top cover 160 may include fastening, coupling, attaching, or securing to the other side of the second sidewall 122.

[0110] The first fastening member S1 can fasten the first sidewall 121 and the top cover 160. Multiple first fastening members S1 can be provided. Multiple first fastening members S1 can be arranged along the front-back direction or the X-axis direction.

[0111] The second fastening member S2 can fasten the second sidewall 122 and the top cover 160. Multiple second fastening members S2 can be provided. Multiple second fastening members S2 can be arranged along the front-back direction or the X-axis direction.

[0112] The top cover 160 may cover the upper surface of the plurality of battery cells 200. Alternatively, the top cover 160 may cover the upper surface of the first battery array 300.

[0113] According to this configuration of the present disclosure, since the top cover 160 is attached to the first sidewall 121 and the second sidewall 122, the structure of the battery assembly can be simplified and the number of components can be reduced.

[0114] Moreover, according to this configuration, the substrate 110, the first sidewall 121, the second sidewall 122, and the top cover 160 can be stably compressed, fixed, or supported by the first battery array 300.

[0115] refer to Figures 24 to 27 The top cover 160 of the battery assembly according to embodiments of the present disclosure may include fastening, coupling, attaching, or fixing to one side of the third sidewall 123. Moreover, the top cover 160 may include fastening, coupling, attaching, or fixing to the other side of the third sidewall 123.

[0116] The seventh fastening member S7 can fasten the third sidewall 123 and the top cover 160. Multiple seventh fastening members S7 can be provided. Multiple seventh fastening members S7 can be arranged along the front-back direction or the X-axis direction.

[0117] The eighth fastening member S8 can fasten the fourth side wall 124 and the top cover 160. Multiple eighth fastening members S8 can be provided. Multiple eighth fastening members S8 can be arranged along the front-back direction or the X-axis direction.

[0118] The top cover 160 may cover the upper surface of the plurality of battery cells 200. Alternatively, the top cover 160 may cover the upper surface of the second battery array 400.

[0119] According to this configuration of the present disclosure, since the top cover 160 is fastened to the third sidewall 123 and the fourth sidewall 124, the structure of the battery assembly can be simplified and the number of parts can be reduced.

[0120] Moreover, according to this configuration, the substrate 110, the third sidewall 123, the fourth sidewall 124, and the top cover 160 can stably compress, fix, or support the second battery array 400.

[0121] Depending on the additional components and structure, the battery assembly disclosed herein may refer to a battery module or a battery pack.

[0122] The battery rack according to this disclosure may include battery modules. The battery rack may also include a frame for securing, supporting, or mounting multiple battery modules. Furthermore, the battery rack according to this disclosure may include a battery management system (BMS) for controlling multiple battery modules. For example, a single BMS may be provided for two battery racks.

[0123] The battery container according to this disclosure may include a battery assembly according to this disclosure. Additionally, the battery container according to this disclosure may include a battery rack according to this disclosure. Multiple battery racks may be provided. The battery container may include a container housing. The container housing provides a receiving space for accommodating the battery racks. Furthermore, the battery container may include a control unit for controlling multiple battery racks. Additionally, the battery container may be configured to further include sensors for detecting the state of the battery racks or a fire module for controlling thermal events.

[0124] The energy storage system (ESS) according to this disclosure may include a battery assembly according to this disclosure. Furthermore, the energy storage system (ESS) according to this disclosure may include a battery container according to this disclosure. The energy storage system may include multiple battery containers. Moreover, the battery container may include multiple battery racks. The energy storage system can construct a link group by combining a number of battery containers and a control container. As an example, the control container may perform overall control or diagnostics on the battery containers. Additionally, the control container may include a DC section, an AC section, a BSC section, etc., to control the battery containers. Each control container may be connected to a PCS.

[0125] The use of terms such as up, down, left, right, front, and back to indicate direction is for ease of description, but it will be apparent to those skilled in the art that these terms may vary depending on the position of the element or the observer.

[0126] This disclosure has been described in detail. However, it should be understood that while indicating preferred embodiments of this disclosure, the detailed description and specific examples are given by way of illustration only, as various changes and modifications within the scope of this disclosure will become apparent to those skilled in the art based on this detailed description.

Claims

1. A battery assembly, comprising: substrate; A first sidewall is attached to the upper surface of the substrate and extends in the front-rear direction; A second sidewall is attached to the upper surface of the substrate and extends in the front-rear direction, and the second sidewall is spaced apart from the first sidewall. Multiple battery cells are positioned between the first sidewall and the second sidewall and stacked in the left-right direction; as well as A top cover having one side connected to the first sidewall and the other side connected to the second sidewall.

2. The battery assembly according to claim 1, in, The first sidewall and the second sidewall compress the plurality of battery cells in the left-right direction.

3. The battery assembly according to claim 1, further comprising: A first fastening member, configured to fasten the first sidewall and the top cover; as well as A second fastening member is configured to fasten the second sidewall and the top cover.

4. The battery assembly according to claim 1, further comprising: A third fastening member is configured to fasten the first sidewall and the substrate; as well as A fourth fastening member, which is configured to fasten the second sidewall and the substrate.

5. The battery assembly according to claim 1, further comprising: A front cover is positioned in front of the plurality of battery cells and has one side connected to the first sidewall and the other side connected to the second sidewall.

6. The battery assembly according to claim 5, in, The front cover includes: A main body, the main body being configured to cover between the first sidewall and the second sidewall; A first connecting portion, the first connecting portion extending rearward from the body and configured to cover the outer surface of the first sidewall; and The second connecting portion extends rearward from the body and is configured to cover the outer surface of the second sidewall.

7. The battery assembly according to claim 6, further comprising: A fifth fastening member is configured to fasten the first connecting portion and the first sidewall; as well as A sixth fastening member, which is configured to fasten the second connecting portion and the second sidewall.

8. The battery assembly according to claim 1, in, The plurality of battery cells constitute a first battery array, and The battery assembly includes: A third sidewall is attached to the upper surface of the substrate and is positioned behind the first sidewall and extends in the front-rear direction. A fourth sidewall, said fourth sidewall being attached to the upper surface of the substrate and positioned behind the second sidewall and extending in the front-rear direction; and The second battery array is positioned between the third and fourth sidewalls and has a plurality of battery cells stacked in the left-right direction.

9. The battery assembly according to claim 8, in, One side of the top cover is connected to the third sidewall, and The other side of the top cover is connected to the fourth side wall.

10. The battery assembly of claim 8, further comprising: A first support, the first support having one side connected to the first sidewall and the other side connected to the third sidewall; as well as The second support has one side connected to the second sidewall and the other side connected to the fourth sidewall.

11. The battery assembly of claim 10, further comprising: The rear cover is positioned behind the second battery array and has one side connected to the third sidewall and the other side connected to the fourth sidewall.

12. A battery rack comprising a battery assembly according to any one of claims 1 to 11.

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

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