Battery assembly

Abstract

A battery assembly is disclosed. A battery assembly according to one embodiment of the present invention may comprise: a case providing an internal space; a first battery array accommodated in the case and including a plurality of battery cells stacked in a lateral direction; a second battery array accommodated in the case, including a plurality of battery cells stacked in the lateral direction, and stacked with the first battery array in the lateral direction; a first bus bar electrically connected to a front side of the first battery array and electrically insulated from the second battery array; and a second bus bar electrically connected to a front side of the second battery array and electrically insulated from the first battery array.

Description

Technical Field

[0001] The present disclosure relates to a battery assembly.

[0002] This application is based on and claims the benefit of priority from Korean Patent Application No. 10-2023-0154001 filed on November 8, 2023, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. Background Art

[0003] Currently, commercially available secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, lithium secondary batteries, etc., and among them, lithium secondary batteries have little or no memory effect, so they have received more attention than nickel-based secondary batteries because they have the advantages of being able to be recharged whenever convenient, having a very low self-discharge rate and a high energy density.

[0004] Recently, with the emergence of issues such as power shortages and environmentally friendly energy, energy storage systems (ESS) for storing generated electricity have received increasing attention. For example, smart grid systems have been proposed as one of the methods for controlling power supply and demand. The amount of electricity consumed by consumers is not always constant and may fluctuate frequently. A representative example is that due to the use of air conditioners, electricity consumption increases rapidly in the afternoon in the summer and then decreases rapidly at night. In terms of power consumption, power consumption is not constant and may fluctuate frequently, but in terms of power supply, even if power generation is controlled to a certain extent, it is difficult to actually match this power consumption. Therefore, this imbalance between power supply and consumption can lead to power oversupply or power shortage, and smart grid systems can flexibly store and control power to address these problems. Smart grid systems are a concept that stores electricity at times or in areas with excess power and supplies the stored electricity at times or in areas with insufficient power. One of the key components for building such smart grid systems is the energy storage system for storing electricity. In addition, with the active commercialization of electric vehicles, energy storage systems can also be used in facilities used to charge electric vehicles, such as charging stations.

[0005] Such energy storage systems may include multiple battery packs or battery assemblies. To reduce the weight of energy storage systems and increase energy density, it is necessary to simplify the structure of the battery assembly. Furthermore, a structure that allows for easy connection of multiple battery assemblies to increase scalability is desired. Summary of the Invention

[0006] Technical issues

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

[0008] The present disclosure is directed to providing a battery assembly in which a plurality of battery cells are stably fixed.

[0009] The present disclosure also aims to provide a battery assembly having a reduced number of parts and a simplified structure.

[0010] The present disclosure is also directed to providing battery assemblies having improved energy density.

[0011] The present disclosure also aims to provide a battery assembly with improved scalability.

[0012] Technical Solution

[0013] In one aspect of the present disclosure, a battery assembly is provided, comprising: a shell providing an internal space; a first battery array accommodated inside the shell and comprising a plurality of battery cells stacked in a left-right direction; a second battery array accommodated inside the shell and comprising a plurality of battery cells stacked in the left-right direction, the second battery array being stacked with the first battery array in the left-right direction; a first bus bar electrically connected to a front side of the first battery array and electrically insulated from the second battery array; and a second bus bar electrically connected to a front side of the second battery array and electrically insulated from the first battery array.

[0014] Furthermore, the number of battery cells in the first battery array may be the same as the number of battery cells in the second battery array.

[0015] In addition, the battery assembly may further include a front bus bar frame extending in the left-right direction such that the first bus bar and the second bus bar are mounted to the front bus bar frame.

[0016] In addition, the shell may include: a substrate; a first side wall, which is connected to the upper surface of the substrate and extends in the front-to-back direction; and a second side wall, which is connected to the upper surface of the substrate and extends in the front-to-back direction, the second side wall is spaced apart from the first side wall, and the first battery array and the second battery array can be accommodated between the first side wall and the second side wall.

[0017] Additionally, the first sidewall and the second sidewall may pressurize the first battery array and the second battery array.

[0018] Furthermore, one side of the front bus bar frame may be fastened to the first side wall.

[0019] In addition, the battery assembly may further include a fixing rod positioned above the first battery array and the second battery array and extending in the left-right direction, the fixing rod having one side coupled to the first side wall and the other side coupled to the second side wall.

[0020] In addition, the battery assembly may further include: a third bus bar electrically connected to the rear side of the first battery array and electrically insulated from the second battery array; and a fourth bus bar electrically connected to the rear side of the second battery array and electrically insulated from the first battery array.

[0021] In addition, the battery assembly may also include: a third battery array, which is positioned at the rear side of the first battery array and includes a plurality of battery cells stacked in the left-right direction; a fifth bus bar, which is electrically connected to the front side of the third battery array; and an intermediate bus bar, which is constructed to electrically connect the third bus bar and the fifth bus bar.

[0022] In addition, the battery assembly may further include a rear bus bar frame extending in the left-right direction such that the third bus bar and the fourth bus bar are mounted to the rear bus bar frame.

[0023] In addition, the battery assembly may further include a first insulating gasket positioned between the first battery array and the second battery array.

[0024] In addition, the first battery array may further include a second insulating pad positioned between the plurality of battery cells.

[0025] A battery rack according to one aspect of the present disclosure includes the battery assembly of the present disclosure.

[0026] An energy storage system according to another aspect of the present disclosure may include the battery assembly of the present disclosure.

[0027] Beneficial effects

[0028] According to at least one embodiment of the present disclosure, a plurality of battery cells may be stably fixed.

[0029] According to at least one embodiment of the present disclosure, a battery assembly may have a reduced number of parts and a simplified structure.

[0030] According to at least one embodiment of the present disclosure, a battery assembly may have improved energy density.

[0031] According to at least one embodiment of the present disclosure, a battery assembly may have improved scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings illustrate preferred embodiments of the present disclosure and, together with the foregoing disclosure, serve to provide further understanding of the technical features of the present disclosure, and therefore, the present disclosure is not to be construed as being limited to the accompanying drawings.

[0033] Figure 1 is a diagram illustrating a battery assembly according to an embodiment of the present disclosure.

[0034] Figure 2 It shows Figure 1 A diagram of a battery assembly with some components exploded.

[0035] Figure 3 It shows Figure 2 Diagram of a battery array of a battery assembly.

[0036] Figure 4 It shows Figure 1 Diagram of some components of a battery assembly.

[0037] Figure 5 It shows Figure 4 A diagram of some components of a battery assembly and a battery array.

[0038] Figure 6 and Figure 7 It shows Figure 5 A diagram of some components of the battery assembly and the front busbar frame assembly.

[0039] Figure 8 and Figure 9 It shows Figure 7 A diagram of some components of the battery assembly and the rear busbar frame assembly.

[0040] Figure 10 and Figure 11 It shows Figure 9 Figure 1 shows some components of the battery assembly and the fixing rods.

[0041] Figure 12 It is along Figure 11 A cross-sectional view taken along the cutting line AA'.

[0042] Figure 13 It shows Figure 12 An enlarged view of part B.

[0043] Figure 14 It shows Figure 12 An enlarged view of part C.

[0044] Figure 15 It shows Figure 12 An enlarged view of portion D of FIG.

[0045] Figure 16 It shows Figure 12 An enlarged view of part E.

[0046] Figure 17 It shows Figure 12 A diagram of some components of a battery assembly and a battery array.

[0047] Figure 18 It shows Figure 17 Figure 2 shows some components and brackets of the battery assembly.

[0048] Figure 19 It shows Figure 18 An enlarged view of part F.

[0049] Figure 20 It shows Figure 18 An enlarged view of part G.

[0050] Figure 21 It shows Figure 18 An enlarged view of part H.

[0051] Figure 22 and Figure 23 It shows Figure 18 Diagram of some components of a battery assembly and the intermediate bus bar.

[0052] Figure 24 It shows Figure 23 Diagram of some components of the battery assembly as well as the terminal busbars and control board.

[0053] Figure 25 It shows Figure 24 Figure 1 shows some components of the battery assembly and the top cover.

[0054] Figure 26 1 is a diagram showing an example of electrode connection between a first battery array and a second battery array.

[0055] Figure 27 1 is a diagram showing an example of electrode connection of the first battery array to the fourth battery array.

[0056] Figure 28 1 is a diagram showing an example of electrode connection of the first to sixth battery arrays.

[0057] Figure 29 1 is a diagram showing an example of electrode connection of the first to eighth battery arrays. DETAILED DESCRIPTION

[0058] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Before the description, it should be understood that the terms used in the specification and the appended claims should not be interpreted as limited to the general meaning and dictionary meaning, but should be interpreted based on the meaning and concept corresponding to the technical aspects of the present disclosure on the basis of the principle that the inventor is allowed to appropriately define the terms for the best interpretation.

[0059] Therefore, the descriptions presented herein are merely preferred examples for illustrative purposes, and are not intended to limit the scope of the present disclosure, and it should be understood that other equivalents and modifications may be made thereto without departing from the scope of the present disclosure.

[0060] Figure 1 is a diagram illustrating a battery assembly according to an embodiment of the present disclosure. Figure 2 It shows Figure 1 Figure 1 shows a diagram of a battery assembly with some components exploded. Figure 1 and Figure 2 The battery assembly according to an embodiment of the present disclosure may include a housing 100 , a first battery array 310 , a second battery array 320 , a first bus bar 512 , and a second bus bar 513 .

[0061] The housing 100 may have a rectangular parallelepiped shape. The housing 100 may provide a space therein. In addition, the housing 100 may form an appearance of the battery assembly.

[0062] The first battery array 310 may include a plurality of battery cells 200. Here, the battery cells 200 may refer to secondary batteries. Furthermore, the battery cells 200 may be pouch-shaped secondary batteries. The battery cells 200 may extend in a front-to-back direction or in the X-axis direction. The plurality of battery cells 200 may be stacked in a left-to-right direction or in the Y-axis direction. The first battery array 310 may be housed within the housing 100.

[0063] The second battery array 320 may include a plurality of battery cells 200. The plurality of battery cells 200 may be stacked in a left-right direction or a Y-axis direction. The second battery array 320 may be housed within the housing 100. The first battery array 310 and the second battery array 320 may be stacked in a left-right direction or a Y-axis direction. Alternatively, the second battery array 320 may be positioned to one side of the first battery array 310. The first battery array 310 and the second battery array 320 may be collectively referred to as a battery array 300.

[0064] The first bus bar 512 may be electrically connected to the front side of the first battery array 310. The first bus bar 512 may include a plurality of parts.

[0065] The second bus bar 513 may be electrically connected to the front side of the second battery array 320. The second bus bar 513 may include multiple parts. The first bus bar 512 and the second bus bar 513 may be electrically insulated. The second bus bar 513 may be positioned on one side of the first bus bar 512. Alternatively, the first bus bar 512 and the second bus bar 513 may be arranged along the left-right direction or the Y-axis direction.

[0066] According to this configuration of the present disclosure, the first battery array 310 and the second battery array 320 can be electrically separated. Therefore, when multiple battery assemblies are provided, they can be arranged in the front-to-back direction or the Z-axis direction. In this case, the first battery array 310 and the second battery array 320 can each be electrically connected to the battery array 300 of an adjacent battery assembly. Therefore, the battery assembly can be configured to be expandable in the front-to-back direction or the Z-axis direction.

[0067] Figure 3 It shows Figure 2 FIG300 is a diagram of a battery array of battery components. Figures 1 to 3 The battery assembly may include a first insulating pad 401. The first insulating pad 401 may be positioned between the first battery array 310 and the second battery array 320. The first insulating pad 401 may have a flat plate shape. The first insulating pad 401 may be elastic. Alternatively, the first insulating pad 401 may be electrically insulating. For example, the first insulating pad 401 may include a silicone material. Alternatively, the first insulating pad 401 may extend in the front-to-back direction or the X-axis direction.

[0068] The battery cell 200 may include a receiving portion 210 receiving the electrode assembly and a sealing portion 220 extending forward from the receiving portion 210. Also, the battery cell may include an electrode lead 230 protruding forward from the receiving portion 210 or the sealing portion 220.

[0069] According to the configuration of the present disclosure, the electrical safety of the battery assembly can be improved. The first battery array 310 and the second battery array 320 can be stably insulated.

[0070] refer to Figures 1 to 3 The battery assembly may include a second insulating pad 402. The second insulating pad 402 may be positioned between the plurality of battery cells 200 of the first battery array 310. The second insulating pad 402 may be substantially the same component as the first insulating pad 401. The first battery array 310 may include a plurality of second insulating pads 402.

[0071] In addition, the second insulating gasket 402 may be positioned between the plurality of battery cells 200 of the second battery array 320. The second battery array 320 may include a plurality of second insulating gaskets 402.

[0072] In addition, the third insulating pad 403 may be disposed at the right side of the first battery array 310. Also, the third insulating pad 403 may be disposed at the left side of the second battery array 320. The first to third insulating pads 401 to 403 may be substantially the same components.

[0073] According to this configuration of the present disclosure, the electrical safety of the battery assembly can be improved. The first battery array 310 and the second battery array 320 can be stably insulated.

[0074] Figure 4 It shows Figure 1 Diagram of some components of a battery assembly. Figure 5 It shows Figure 4 Figure 300 shows some components of a battery assembly and a battery array. Figure 4 and Figure 5 The housing 100 of the battery assembly may include a substrate 110 , a first side wall 121 and a second side wall 122 .

[0075] The substrate 110 may have a rectangular shape. The substrate 110 may form the exterior of the battery assembly. The substrate 110 may have a cooling path therein. The cooling path may be formed along the front-to-back direction or the X-axis direction. A cooling fluid may flow along the cooling path. The substrate 110 may also have a pair of ports 111 that serve as an inlet channel and an outlet channel for the cooling fluid. The substrate 110 may also be referred to as a heat sink.

[0076] The first sidewall 121 may be coupled, fastened, attached, or fixed to the upper surface of the substrate 110. The first sidewall 121 may extend along the front-to-rear direction or the X-axis direction. The first sidewall 121 may form an appearance of the battery assembly.

[0077] The second side wall 122 may be coupled, fastened, attached, or fixed to the upper surface of the substrate 110. The second side wall 122 may extend in the front-to-back direction or the X-axis direction. The second side wall 122 may be spaced apart from the first side wall 121 in the left-to-right direction or the Y-axis direction. Moreover, the first side wall 121 and the second side wall 122 may be opposite to each other. Alternatively, the first side wall 121 and the second side wall 122 may face each other. The second side wall 122 may form the appearance of the battery assembly.

[0078] The first battery array 310 and the second battery array 320 may be accommodated between the first side wall 121 and the second side wall 122. Furthermore, the first battery array 310 and the second battery array 320 may be fixed between the first side wall 121 and the second side wall 122. The first side wall 121 and the second side wall 122 may provide a compressive force to compress the first battery array 310 and the second battery array 320 in the left-right direction.

[0079] The heat transfer member 720 may be positioned between the first battery array 310 and the substrate 110. Furthermore, the heat transfer member 720 may be positioned between the second battery array 320 and the substrate 110. The heat transfer member 720 may include a material having high thermal conductivity. The heat transfer member 720 may transfer heat generated from the first battery array 310 and the second battery array 320 to the substrate 110.

[0080] According to this configuration of the present disclosure, the first battery array 310 and the second battery array 320 can be stably fixed. Since the first side wall 121 and the second side wall 122 forming the appearance of the battery assembly fix the first battery array 310 and the second battery array 320, the number of parts of the battery assembly can be reduced and the structure can be simplified.

[0081] Figure 6 and Figure 7 It shows Figure 5 Figure 510 shows some components of the battery assembly and the front busbar frame assembly. Figure 6 and Figure 7 , the battery assembly according to an embodiment of the present disclosure may include a front bus bar frame 511. The front bus bar frame 511 may extend in the left-right direction or the Y-axis direction. The first bus bar 512 and the second bus bar 513 may be installed, fixed, installed, coupled, fastened or attached to the front bus bar frame 511. The front bus bar frame 511 may cover the front side of the accommodating portion 210 of the plurality of battery cells 200. Alternatively, the front bus bar frame 511 may cover the front side of the plurality of accommodating portions 210 of the first battery array 310. Alternatively, the front bus bar frame 511 may cover the front side of the plurality of accommodating portions 210 of the second battery array 320.

[0082] A plurality of interconnection boards (ICBs) 514 and 515 may be provided. The first interconnection board 514 may be electrically connected to the first bus bar 512. In addition, the second interconnection board 515 may be electrically connected to the second bus bar 513.

[0083] According to this configuration of the present disclosure, the structure of the battery assembly can be simplified by mounting the electrically separated first bus bar 512 and second bus bar 513 on a single front bus bar frame 511. Furthermore, since the number of parts in the battery assembly is reduced, productivity can be improved. Furthermore, since the number of parts in the battery assembly is reduced, energy density can be increased.

[0084] refer to Figure 6 and Figure 7, one side of the front bus bar frame 511 according to an embodiment of the present disclosure may be fastened to the first side wall 121. A fastening member S may fasten one side of the front bus bar frame 511 to the first side wall 121. In addition, the other side of the front bus bar frame 511 may be fastened to the second side wall 122. A fastening member S may fasten the other side of the front bus bar frame 511 to the second side wall 122.

[0085] According to such a configuration of the present disclosure, the front bus bar frame 511 may be installed and fixed by being fastened to the first side wall 121 and the second side wall 122. This may simplify the structure of the battery assembly.

[0086] Figure 8 and Figure 9 It shows Figure 7 Figure 521 shows some components of the battery assembly and the rear busbar frame assembly. Figure 8 and Figure 9 , the battery assembly according to an embodiment of the present disclosure may include a rear bus bar frame 521. The rear bus bar frame 521 may have a structure very similar to the front bus bar frame 511. The rear bus bar frame 521 may extend in the left-right direction or the Y-axis direction. The second bus bar 513 and the third bus bar 522 may be installed, fixed, installed, coupled, fastened or attached to the rear bus bar frame 521. The rear bus bar frame 521 may cover the rear side of the accommodating portion 210 of the plurality of battery cells 200. Alternatively, the rear bus bar frame 521 may cover the rear side of the plurality of accommodating portions 210 of the first battery array 310. Alternatively, the rear bus bar frame 521 may cover the rear side of the plurality of accommodating portions 210 of the second battery array 320.

[0087] According to this configuration of the present disclosure, the structure of the battery assembly can be simplified by mounting the electrically separated third bus bar 522 and fourth bus bar 523 on a single rear bus bar frame 521. Furthermore, since the number of parts in the battery assembly is reduced, productivity can be improved. Furthermore, since the number of parts in the battery assembly is reduced, energy density can be increased.

[0088] refer to Figure 8 and Figure 9 , one side of the rear bus bar frame 521 according to an embodiment of the present disclosure may be fastened to the first side wall 121. A fastening member S may fasten one side of the rear bus bar frame 521 to the first side wall 121. In addition, the other side of the rear bus bar frame 521 may be fastened to the second side wall 122. A fastening member S may fasten the other side of the rear bus bar frame 521 to the second side wall 122.

[0089] The interconnection plates 524 and 525 may be provided in plural. The first interconnection plate 524 may be electrically connected to the third bus bar 522. In addition, the second interconnection plate 525 may be electrically connected to the fourth bus bar 523.

[0090] According to such a configuration of the present disclosure, the rear bus bar frame 521 may be installed and fixed by being fastened to the first side wall 121 and the second side wall 122. This may simplify the structure of the battery assembly.

[0091] Figure 10 and Figure 11 It shows Figure 9 FIG. 1 shows some components of the battery assembly and the fixing rod 150. Figure 10 and Figure 11 The first sidewall 121 and the second sidewall 122 of the battery assembly according to an embodiment of the present disclosure can pressurize the first battery array 310 and the second battery array 320. The first sidewall 121 and the second sidewall 122 can apply a compressive force to compress the first battery array 310 and the second battery array 320 in the left-right direction or the Y-axis direction.

[0092] In addition, the front bus bar frame 511 can pressurize the first and second battery arrays 310 and 320 by being fastened to the first and second side walls 121 and 122. In addition, the rear bus bar frame 521 can pressurize the first and second battery arrays 310 and 320 by being fastened to the first and second side walls 121 and 122.

[0093] According to such a configuration of the present disclosure, the first battery array 310 and the second battery array 320 may be stably fixed.

[0094] refer to Figure 10 and Figure 11 A battery assembly according to an embodiment of the present disclosure may include a fixing rod 150. The fixing rod 150 may be positioned above the first battery array 310 and the second battery array 320. The fixing rod 150 may extend in the left-right direction or the Y-axis direction. A plurality of fixing rods 150 may be provided. The plurality of fixing rods 150 may be arranged in the front-back direction or the X-axis direction. The plurality of fixing rods 150 may form the appearance of the battery assembly.

[0095] One side of the fixing rod 150 may be fastened, coupled, fixed, or attached to the first sidewall 121. A fastening member S may fasten one side of the fixing rod 150 to the first sidewall 121. In addition, the other side of the fixing rod 150 may be fastened, coupled, fixed, or attached to the second sidewall 122. A fastening member S may fasten the other side of the fixing rod 150 to the second sidewall 122.

[0096] According to this configuration of the present disclosure, the fixing rod 150 can pressurize the first and second battery arrays 310 and 320. The fixing rod 150 can apply a compressive force to compress the first and second battery arrays 310 and 320 in the left-right direction or the Y-axis direction.

[0097] Figure 12 It is along Figure 11 A cross-sectional view taken along the cutting line A-A'. Figure 12 , the number of battery cells 200 of the first battery array 310 and the number of battery cells 200 of the second battery array 320 of the battery assembly according to an embodiment of the present disclosure may be the same. For example, the first battery array 310 and the second battery array 320 may include 20 battery cells 200, respectively. In addition, the first battery array 310 and the second battery array 320 may include 4 second insulating pads 402, respectively. In addition, the first battery array 310 may include a third insulating pad 403 at the rightmost position. In addition, the second battery array 320 may include a third insulating pad 403 at the leftmost position. In addition, the first insulating pad 401 may be included between the first battery array 310 and the second battery array 320.

[0098] According to the configuration of the present disclosure, since the number of the first battery array 310 and the second battery array 320 is the same, scalability can be improved. For example, when a plurality of battery assemblies are electrically connected, electrical scalability can be easily achieved.

[0099] Figure 13 It shows Figure 12 An enlarged view of part B. Figure 14 It shows Figure 12 An enlarged view of part C. Figure 13 and Figure 14 , the plurality of battery cells 200 of the first battery array 310 may be electrically connected to the first bus bar 512. Furthermore, the plurality of battery cells 200 of the second battery array 320 may be electrically connected to the second bus bar 513. The first bus bar 512 and the second bus bar 513 may be electrically separated or insulated. Furthermore, the first bus bar 512 may be electrically separated or insulated from the second battery array 320. Furthermore, the second bus bar 513 may be electrically separated or insulated from the first battery array 300.

[0100] Figure 15 It shows Figure 12 An enlarged view of portion D of FIG. Figure 16 It shows Figure 12 An enlarged view of part E. Figure 15 and Figure 16, the plurality of battery cells 200 of the first battery array 310 may be electrically connected to the third bus bar 522. The third bus bar 522 may be electrically connected to the rear side of the first battery array 310. The first battery array 310 may be electrically connected to the first bus bar 512 and the third bus bar 522. The third bus bar 522 may be electrically separated or insulated from the second battery array 320.

[0101] The plurality of battery cells 200 of the second battery array 320 may be electrically connected to a fourth bus bar 523. The fourth bus bar 523 may be electrically connected to a rear side of the second battery array 320. The second battery array 320 may be electrically connected to the second bus bar 513 and the fourth bus bar 523. The fourth bus bar 523 may be electrically separated or insulated from the first battery array 310.

[0102] According to this configuration of the present disclosure, the first battery array 310 and the second battery array 320 can be electrically connected to the front side through one front bus bar frame 511, and can be electrically connected to the rear side through one rear bus bar frame 521. Therefore, the structure of the battery assembly can be simplified while improving electrical scalability.

[0103] Figure 17 It shows Figure 12 FIG2 is a diagram of some components of a battery assembly and a battery array 300 . Figure 18 It shows Figure 17 FIG. 1 is a diagram of some components of a battery assembly and a bracket 130 . Figure 19 It shows Figure 18 An enlarged view of part F.

[0104] refer to Figures 17 to 19 The battery assembly according to an embodiment of the present disclosure may include a third battery array 330 and a fourth battery array 340. The third battery array 330 and the fourth battery array 340 may have substantially the same configuration as the first battery array 310 and the second battery array 320.

[0105] The third battery array 330 may be positioned at the rear side of the first battery array 310. The third battery array 330 may include a plurality of battery cells 200 stacked in the left-right direction. The fourth battery array 340 may be positioned at the rear side of the second battery array 320.

[0106] The fifth bus bar 532 may be electrically connected to the front side of the third battery array 330. The sixth bus bar 533 may be electrically connected to the front side of the fourth battery array 340. The front bus bar frame assembly 530 may have substantially the same configuration and structure as the rear bus bar frame assembly 520. The front bus bar frame assembly 530 and the rear bus bar frame assembly 520 may be arranged to face each other.

[0107] A plurality of first intermediate bus bars 610 may be provided. The first intermediate bus bars 610 may electrically connect the first battery array 310 and the third battery array 330. Alternatively, the first intermediate bus bars 610 may electrically connect the rear bus bar frame assembly 520 and the front bus bar frame assembly 530.

[0108] This configuration of the present disclosure facilitates the electrical connection of multiple battery arrays 300. Even without cables for electrically connecting the multiple battery arrays 300, electrical connection can be achieved by fastening intermediate busbars to the symmetrically configured busbar frame assembly. This simplifies the structure of the battery assembly while improving electrical scalability.

[0109] refer to Figure 17 and Figure 18 , the first side wall 121 and the plurality of side walls 120 may be fastened, connected, coupled, or fixed by the bracket 130. Additionally, the second side wall 122 and the plurality of side walls 120 may be fastened, connected, coupled, or fixed by the bracket 130. The third battery array 330 and the fourth battery array 340 may be electrically connected to the front bus bar frame assembly 530 and the rear bus bar frame assembly 540, respectively. Furthermore, the third battery array 330 and the fourth battery array 340 may be pressurized by the fixing rod 150.

[0110] Figure 20 It shows Figure 18 An enlarged view of section G. Figure 18 and Figure 20 , the first intermediate bus bar 610 may electrically connect the first battery array 310 and the third battery array 330 . Alternatively, the first intermediate bus bar 610 may electrically connect the rear bus bar frame assembly 520 and the front bus bar frame assembly 530 .

[0111] Figure 21 It shows Figure 18 An enlarged view of part H. Figure 18 and Figure 21 The battery assembly according to the embodiment of the present disclosure may include a fifth battery array 350 and a sixth battery array 360. The fifth battery array 350 and the sixth battery array 360 may have substantially the same configuration as the third battery array 330 and the fourth battery array 340.

[0112] The fifth battery array 350 may be positioned at a rear side of the third battery array 330. The sixth battery array 360 may be positioned at a rear side of the fourth battery array 340.

[0113] The front bus bar frame assembly 550 may be electrically connected to the front side of the fifth battery array 350. The front bus bar frame assembly 550 may be electrically connected to the front side of the sixth battery array 360. The front bus bar frame assembly 530 may have substantially the same configuration and structure as the rear bus bar frame assembly 540. The front bus bar frame assembly 550 and the rear bus bar frame assembly 540 may be arranged to face each other.

[0114] A plurality of first intermediate bus bars 610 may be provided. The first intermediate bus bars 610 may electrically connect the fifth battery array 350 and the third battery array 330. Alternatively, the first intermediate bus bars 610 may electrically connect the rear bus bar frame assembly 540 and the front bus bar frame assembly 550.

[0115] Also, the first intermediate bus bar 610 may electrically connect the sixth battery array 360 and the fourth battery array 340 .

[0116] The fifth battery array 350 and the sixth battery array 360 may be electrically connected to the front bus bar frame assembly 550 and the rear bus bar frame assembly 560 , respectively. Also, the third battery array 330 and the fourth battery array 340 may be pressurized by the fixing rod 150 .

[0117] In addition, the third battery array 330 and the fourth battery array 340 may be pressurized by the fixing rod 150 .

[0118] The first battery array 310, the third battery array 330, and the fifth battery array 350 may be electrically connected. Also, the second battery array 320, the fourth battery array 340, and the sixth battery array 360 may be electrically connected.

[0119] This configuration of the present disclosure facilitates electrical connection of the plurality of battery arrays 300. Even without cables for electrically connecting the plurality of battery arrays 300, electrical connection can be achieved by fastening the intermediate busbars to the symmetrically configured busbar frame assembly. This simplifies the structure of the battery assembly while improving electrical scalability.

[0120] Figure 22 and Figure 23 It shows Figure 18 Figure 6 shows some components of a battery assembly and intermediate bus bars. The second intermediate bus bar 620 can electrically connect the seventh bus bar 562 and the eighth bus bar 563. The seventh bus bar 562 and the eighth bus bar 563 can be mounted on the rear bus bar frame 561. The first intermediate bus bar 610 can extend in the left-right direction or the Y-axis direction.

[0121] According to such a configuration of the present disclosure, the first battery array 310 , the third battery array 330 , the fifth battery array 350 , the sixth battery array 360 , the fourth battery array 340 , and the second battery array 320 may be electrically connected in this order.

[0122] Figure 24 It shows Figure 23 FIG. 7 is a diagram of some components of a battery assembly as well as a terminal bus bar 730 and a control board 750. Figure 24 The battery assembly according to an embodiment of the present disclosure may include a terminal bus bar 730. The terminal bus bar 730 may be electrically connected to the first bus bar 512 and the second bus bar 513, respectively. Furthermore, the terminal bus bar 730 may include a fuse 740. Furthermore, a control board 750 may be installed in the front bus bar frame assembly 510. The control board 750 may electrically control the battery array 300.

[0123] Figure 25 It shows Figure 24 Figure 140 shows some components of the battery assembly and the top cover. Figure 25 The battery assembly according to an embodiment of the present invention may include a top cover 140. The top cover 140 may cover the upper surfaces of the first to sixth battery arrays 310 to 360. Furthermore, the top cover 140 may cover the first side wall 121, the second side wall 122, and the side wall 120. In addition, the top cover 140 may have an output terminal 710 electrically connected to the terminal bus bar 730.

[0124] Figure 26 3 is a diagram showing an example of electrode connection between the first battery array 310 and the second battery array 320. Figure 26 When the battery assembly includes the first battery array 310 and the second battery array 320 , the rear side of the first battery array 310 and the rear side of the second battery array 320 may be electrically connected via the second intermediate bus bar 620 .

[0125] Figure 27 3 is a diagram showing an example of electrode connection of the first battery array 310 to the fourth battery array 340. Figure 27 When the battery assembly includes the first to fourth battery arrays 310 to 340, the rear side of the first battery array 310 and the front side of the third battery array 330 may be electrically connected via the first intermediate bus bar 610. Furthermore, the rear side of the third battery array 330 and the rear side of the fourth battery array 340 may be electrically connected via the first intermediate bus bar 610. Furthermore, the front side of the fourth battery array 340 and the rear side of the second battery array 320 may be electrically connected via the first intermediate bus bar 610.

[0126] Figure 283 is a diagram showing an example of electrode connection of the first battery array 310 to the sixth battery array 360. Figure 28 When the battery assembly includes the first to sixth battery arrays 310 to 360, the rear side of the first battery array 310 and the front side of the third battery array 330 may be electrically connected via the first intermediate bus bar 610. Furthermore, the rear side of the third battery array 330 and the front side of the fifth battery array 350 may be electrically connected via the first intermediate bus bar 610. Furthermore, the rear side of the fifth battery array 350 and the rear side of the sixth battery array 360 may be electrically connected via the second intermediate bus bar 620. Furthermore, the front side of the sixth battery array 360 and the rear side of the fourth battery array 340 may be electrically connected via the first intermediate bus bar 610. Furthermore, the front side of the fourth battery array 340 and the rear side of the second battery array 320 may be electrically connected via the first intermediate bus bar 610.

[0127] Figure 29 3 is a diagram showing an example of electrode connection of the first battery array 310 to the eighth battery array 380. Figure 29 When the battery assembly includes the first to eighth battery arrays 310 to 380, the rear side of the first battery array 310 and the front side of the third battery array 330 may be electrically connected via the first intermediate bus bar 610. Furthermore, the rear side of the third battery array 330 and the front side of the fifth battery array 350 may be electrically connected via the first intermediate bus bar 610. Furthermore, the rear side of the fifth battery array 350 and the front side of the seventh battery array 370 may be electrically connected via the first intermediate bus bar 610. Furthermore, the rear side of the seventh battery array 370 and the rear side of the eighth battery array 380 may be electrically connected via the first intermediate bus bar 610. Furthermore, the front side of the eighth battery array 380 and the rear side of the sixth battery array 360 may be electrically connected via the first intermediate bus bar 610. Furthermore, the front side of the sixth battery array 360 and the rear side of the fourth battery array 340 may be electrically connected via the first intermediate bus bar 610. In addition, the front side of the fourth battery array 340 and the rear side of the second battery array 320 may be electrically connected via the first intermediate bus bar 610 .

[0128] Depending on the additional components and structure, the battery assembly of the present disclosure may be referred to as a battery module or a battery pack.

[0129] The battery rack according to the present disclosure may include battery assemblies. The battery rack may also include a rack frame for securing, supporting, or mounting the multiple battery assemblies. Furthermore, the battery rack according to the present disclosure may include a battery management system (BMS) for controlling the multiple battery assemblies. For example, one BMS may be provided for two battery racks.

[0130] The battery container according to the present disclosure may include the battery assembly according to the present disclosure. Furthermore, the battery container according to the present disclosure may include the battery rack according to the present disclosure. Multiple battery racks may be provided. The battery container may include a container housing. The container housing may provide a storage space for the battery racks. Furthermore, the battery container may include a control unit for controlling the multiple battery racks. Furthermore, the battery container may be configured to include sensors for detecting the status of the battery racks or a fire module for controlling thermal events.

[0131] The energy storage system (ESS) according to the present disclosure may include the battery assembly according to the present disclosure. Furthermore, the energy storage system (ESS) according to the present disclosure may include the battery container according to the present disclosure. The energy storage system may include multiple battery containers. Furthermore, the battery container may include multiple battery racks. The energy storage system may construct a link group by combining a certain number of battery containers and control containers. For example, the control container may perform overall control or diagnosis of the battery container. Furthermore, the control container may include a DC section, an AC section, a BSC section, etc. to control the battery container. At the same time, each control container may be connected to a PCS.

[0132] Terms indicating directions such as up, down, left, right, front, and rear may be used to facilitate description, but it is obvious to those skilled in the art that these terms may change according to the positions of the elements or observers.

[0133] The present disclosure has been described in detail. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the present disclosure, are given by way of illustration only, since various changes and modifications within the scope of the present disclosure will become apparent to those skilled in the art from this detailed description.

Claims

1. A battery assembly comprising: a housing providing an interior space; a first battery array accommodated inside the housing and including a plurality of battery cells stacked in a left-right direction; a second battery array housed inside the housing and comprising a plurality of battery cells stacked in the left-right direction, the second battery array being stacked with the first battery array in the left-right direction; a first bus bar electrically connected to a front side of the first battery array and electrically insulated from the second battery array; as well as A second bus bar is electrically connected to a front side of the second battery array and is electrically insulated from the first battery array.

2. The battery assembly according to claim 1, in, The number of battery cells in the first battery array is the same as the number of battery cells in the second battery array.

3. The battery assembly according to claim 1, further comprising: A front bus bar frame extends in the left-right direction such that the first bus bar and the second bus bar are mounted to the front bus bar frame.

4. The battery assembly according to claim 3, in, The housing comprises: substrate; a first side wall coupled to an upper surface of the base plate and extending in a front-to-rear direction; and a second side wall coupled to the upper surface of the base plate and extending in the front-rear direction, the second side wall being spaced apart from the first side wall, The first battery array and the second battery array are accommodated between the first side wall and the second side wall.

5. The battery assembly according to claim 3, in, The first side wall and the second side wall pressurize the first battery array and the second battery array.

6. The battery assembly according to claim 4, in, One side of the front bus bar frame is fastened to the first side wall.

7. The battery assembly according to claim 4, further comprising: A fixing rod is positioned above the first battery array and the second battery array and extends in the left-right direction, the fixing rod having one side coupled to the first side wall and another side coupled to the second side wall.

8. The battery assembly according to claim 1, further comprising: a third bus bar electrically connected to a rear side of the first battery array and electrically insulated from the second battery array; as well as A fourth bus bar is electrically connected to a rear side of the second battery array and is electrically insulated from the first battery array.

9. The battery assembly according to claim 8, further comprising: a third battery array positioned at the rear side of the first battery array and including a plurality of battery cells stacked in the left-right direction; a fifth bus bar electrically connected to a front side of the third battery array; as well as An intermediate bus bar is configured to electrically connect the third bus bar and the fifth bus bar.

10. The battery assembly according to claim 8, further comprising: A rear bus bar frame extends in the left-right direction such that the third bus bar and the fourth bus bar are mounted thereto.

11. The battery assembly according to claim 1 , further comprising: A first insulating pad is positioned between the first battery array and the second battery array.

12. The battery assembly according to claim 1, in, The first battery array further includes a second insulating pad positioned between the plurality of battery cells.

13. A battery rack comprising the battery assembly according to any one of claims 1 to 12.

14. An energy storage system comprising the battery assembly according to any one of claims 1 to 12.

Images