Battery assembly

Abstract

The present disclosure relates to a battery assembly including: a plurality of battery packs including a battery cell; an accommodation case accommodating the plurality of battery packs; a support portion provided inside the accommodation case across any one of the plurality of battery packs; and a bus bar portion inside the accommodation case supported by the support portion and electrically connecting the battery cell of the any one of the plurality of battery packs or electrically connecting between the plurality of battery packs.

Description

Technical Field

[0001] This disclosure relates to a battery assembly. Background Technology

[0002] Conventional battery assemblies, including prismatic cells, only use thermal adhesive to fix the prismatic cells to the bottom surface of the housing. Furthermore, the busbars are only used for electrical connection of the prismatic cells and do not perform any other function. This structure lacks a physical or mechanical bond between the prismatic cells and the housing, and therefore may be susceptible to strong external vibrations or impacts.

[0003] Therefore, it is necessary to prevent the position of the prismatic battery cell from deviating from its original position due to strong external vibration or impact, or from affecting the electrical connection due to busbar deformation. Summary of the Invention

[0004] (a) Technical problems to be solved According to one aspect of this disclosure, the technical problem to be solved is to improve the structural stability of battery modules.

[0005] According to another aspect of this disclosure, the technical problem to be solved is to improve the lifespan of battery modules.

[0006] According to another aspect of this disclosure, the technical problem to be solved is to ensure that the position of the battery cell remains unchanged even under strong external shocks or vibrations.

[0007] According to another aspect of this disclosure, the technical problem to be solved is to enable the busbar to perform both electrical connection and mechanical connection functions simultaneously.

[0008] On the other hand, this disclosure can be widely applied to green technologies such as electric vehicles, battery charging stations, energy storage systems (ESS), and other green technologies utilizing battery cells, such as solar power (photovoltaics) and wind power. Furthermore, this disclosure can be used for eco-friendly mobility tools, including electric vehicles and hybrid vehicles, to prevent climate change by suppressing air pollution and greenhouse gas emissions.

[0009] (II) Technical Solution The battery assembly according to this disclosure may include: a plurality of battery packs, the battery packs including cells; a housing housing for housing the plurality of battery packs; a support portion disposed inside the housing housing, spaced apart from any one of the plurality of battery packs; and a busbar portion inside the housing housing, supported by the support portion, and electrically connecting the cells of any one of the battery packs, or electrically connecting the plurality of battery packs to each other.

[0010] In one embodiment, the support portion may include a partition support portion located between one of the battery packs and another battery pack disposed adjacent to the one of the battery packs, and the busbar portion may include a first busbar supported by the partition support portion and electrically connecting the cells of the one of the battery packs.

[0011] In one embodiment, any battery pack may include a first cell and a second cell arranged along a stacking direction. The first cell and the second cell may each include a protruding first terminal portion and a second terminal portion for electrical connection. The first terminal portion and the second terminal portion of the first cell may be arranged to overlap with the second terminal portion and the first terminal portion of the second cell along the stacking direction, respectively.

[0012] In one embodiment, the first busbar may include: a first portion electrically connecting a first terminal portion of the first battery cell to a second terminal portion of the second battery cell; and a second portion extending from the first portion toward the partition support portion and connected to the partition support portion.

[0013] In one embodiment, the first part and the second part may be integrally formed.

[0014] In one embodiment, the second part can be attached to the partition support by a fastening component.

[0015] In one embodiment, at least a portion of the fastening component may be coated with an electrically insulating material.

[0016] In one embodiment, the battery assembly according to this disclosure may further include an insulating member located between the partition support and the second portion.

[0017] In one embodiment, in either of the battery packs and the other battery pack disposed adjacent to the battery pack across the partition support, the second portions of each of the battery packs may be alternately disposed on the partition support along the stacking direction.

[0018] On the other hand, in one embodiment, the first busbar may include: an extension member extending from the first terminal portion of the first battery cell and the second terminal portion of the second battery cell toward the partition support portion and supported by the partition support portion; and a connecting member supported by the partition support portion and electrically connecting the extension member.

[0019] In one embodiment, the connecting member may be disposed between the extension member and the partition support.

[0020] In one embodiment, the extension member and the connecting member can be attached to the partition support by a fastening member.

[0021] In one embodiment, at least a portion of the fastening component may be coated with an electrically insulating material.

[0022] In one embodiment, the battery assembly according to this disclosure may further include: an insulating member disposed on the partition support to electrically insulate the first busbar from the partition support.

[0023] In one embodiment, the busbar portion may further include a second busbar, which is supported by the partition support portion and electrically connects the plurality of battery packs.

[0024] In one embodiment, with the bottom surface of the housing as a reference, the height of the partition support may be lower than the height of any one of the battery cells in the battery pack.

[0025] In one embodiment, the support portion may include: a partition support portion located between one of the battery packs and another battery pack disposed adjacent to the one of the battery packs; and a side support portion opposite to the partition support portion and disposed between one of the two sides of the housing and the plurality of battery packs.

[0026] (III) Beneficial Effects According to one embodiment of this disclosure, the structural stability of the battery assembly can be improved.

[0027] According to another embodiment of this disclosure, the lifespan of the battery assembly can be improved.

[0028] According to another embodiment of this disclosure, the position of the battery cell can remain unchanged even under strong external impacts or vibrations.

[0029] According to yet another embodiment of this disclosure, the busbar can simultaneously perform electrical connection functions and mechanical connection functions. Attached Figure Description

[0030] Figure 1This is an example of a battery assembly according to this disclosure.

[0031] Figure 2 This is an example of a battery cell.

[0032] Figure 3 This is another example of a battery assembly according to this disclosure.

[0033] Figure 4 This is an example of the first busbar section according to this disclosure.

[0034] Figure 5 schematically shown Figure 4 The electrical and mechanical connection status of the first busbar section.

[0035] Figure 6 Show Figure 4 A cross section of the first busbar section and the partition support section.

[0036] Figure 7 This is another example of the first busbar section according to this disclosure.

[0037] Figure 8 schematically shown Figure 7 The electrical and mechanical connection status of the first busbar section.

[0038] Figure 9 Show Figure 7 A cross section of the first busbar section and the partition support section.

[0039] Explanation of reference numerals in the attached figures: 10: Battery cell; 11: First terminal section 12: Second terminal section; 13: Battery cell body 14: Cover assembly 15: Cell casing 100: Battery pack; 310: Housing. 311: Receiving body; 315: Receiving shell bottom surface 400: Support section; 410: Divider support section 411: Support body 415: Insulating components 420: Side support part; 450: Fastening component 451: Fastening body 452: Coating 500: Busbar section 510: First busbar 511: Part One 512: Part Two 513: Extension component; 514: Connecting component 520: Second busbar 530: Connecting busbar 1000: Battery Components Detailed Implementation

[0040] The preferred embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The configurations or control methods of the apparatus described below are merely illustrative of embodiments of the present disclosure and are not intended to limit the scope of the present disclosure, and the same reference numerals used throughout the specification denote the same components.

[0041] The specific terminology used in this specification is for illustrative purposes only and is not intended to limit the embodiments shown.

[0042] In this manual, battery, secondary battery, and battery cell all refer to a cell that can be charged and discharged.

[0043] In this specification, battery assembly may refer to a battery module, battery pack, or energy storage system that includes battery cells.

[0044] Figure 1 This is an example of a battery assembly according to this disclosure.

[0045] The battery assembly 1000 according to this disclosure may include: a plurality of battery packs 100, each battery pack 100 including a cell 10; a housing 310 for housing the plurality of battery packs 100; a support 400 disposed inside the housing 310, spaced apart from any one of the plurality of battery packs 100; and a busbar portion 500 (see reference). Figure 3 Inside the housing 310, the support 400 provides electrical connection to the cells 10 of any one of the battery packs 100, or to the multiple battery packs 100.

[0046] The housing 310 may form a receiving space 38 for accommodating the plurality of battery packs 100. More specifically, the housing 310 may include: a receiving body 311 having an opening on one side and forming the receiving space 38 through the opening for accommodating the plurality of battery packs 100; and a receiving cover (not shown) attached to the receiving body 311 and covering the opening.

[0047] The receiving housing 310 may include a bottom surface 315, which forms the bottom surface of the receiving space 38 or the bottom surface of the receiving body 311. Additionally, the receiving housing 310 may further include receiving body side surfaces 316 and 317, which form one side surface of the receiving space 38 or one side surface of the receiving body 311.

[0048] The housing 310 may further include an electrical space 39 separate from the housing space 38. A control unit (not shown) for controlling the plurality of battery cells may be disposed within the electrical space 39. This control unit may be referred to as a Battery Management System (BMS).

[0049] The accommodating space 38 can accommodate the plurality of battery packs 100. Furthermore, each of the plurality of battery packs 100 may include a battery cell 10. Therefore, the accommodating space 38 may include a plurality of battery cells 10.

[0050] Preferably, each of the plurality of battery packs 100 may include a plurality of battery cells 10 stacked along a preset stacking direction (e.g., the Y direction).

[0051] Figure 1 An example is shown of the plurality of battery packs 100 arranged in 4 columns along the X direction and 2 rows along the Y direction, but this is only an example and the rows and columns of the plurality of battery packs 100 can be changed according to the design.

[0052] The support portion 400 may include: a partition support portion 410 located between any one of the battery packs 100 and another battery pack 100 disposed adjacent to the any one of the battery packs 100; and a side support portion 420 opposite to the partition support portion and disposed between one of the two sides of the housing 310 and the plurality of battery packs.

[0053] That is, when any one of the battery packs 100 is disposed adjacent to one of the two sides of the housing 310, the battery pack 100 can be disposed between the partition support 410 and the side support 420.

[0054] In contrast, when any one of the battery packs 100 is not located adjacent to one side of the housing 310, but is located between other adjacent battery packs 100, the battery pack 100 can be located between a pair of separating support portions 410 separated from the battery pack 100.

[0055] The two sides of the housing 310 can be the sides 316 and 317 of the housing body. Figure 1 In this context, the two sides of the housing 310 can be sides parallel to the stacking direction.

[0056] The partition support 410 can separate the plurality of battery packs 100 inside the housing 310. Therefore, the partition support 410 can be disposed between the plurality of battery packs 100.

[0057] In contrast, the side support 420 may be formed by a portion of the sides 316, 317 of the receiving body protruding toward the plurality of battery packs 100, or by protruding from the bottom surface 315 of the receiving housing.

[0058] That is, the side support 420 can be disposed between the sides 316, 317 of the receiving body and the plurality of battery packs 100.

[0059] Figure 2 This is an example of a battery cell.

[0060] More specifically, Figure 2 An example of a battery cell 10 housed in a housing 310 is shown. Preferably, the battery cell 10 may be a prismatic battery cell.

[0061] The battery cell 10 may include: a battery cell housing 15, which houses an electrode assembly (not shown); and terminal portions 11 and 12, which are connected to the electrode assembly and protrude outward from the battery cell housing 15.

[0062] The cell housing 15 may be cuboid in shape. The cell housing 15 may include: a cell body 13 having an inlet on one side and accommodating the electrode assembly through the inlet; and a cover assembly 14, which is attached to the cell body 13 and covers the inlet.

[0063] The terminal portions 11 and 12 may include a first terminal portion 11 and a second terminal portion 12 that pass through the cover assembly 14 and protrude outward.

[0064] If the first terminal portion 11 has either a positive or a negative polarity, then the second terminal portion 12 may have the other polarity. That is, the first terminal portion 11 and the second terminal portion 12 may have different polarities from each other.

[0065] The battery cell 10 may further include a first gasket 16 disposed between the first terminal portion 11 and the cover assembly 14 and a second gasket 17 disposed between the second terminal portion 12 and the cover assembly 14, so as to seal and electrically insulate the first terminal portion 11 and the second terminal portion 12 from the cover assembly 14.

[0066] In addition, the battery cell 10 may further include: an injection hole 20 that penetrates the cover assembly 14 and injects electrolyte into the interior of the battery cell housing 15; and an exhaust hole 18 that ruptures when the internal pressure of the battery cell housing 15 is greater than or equal to a preset pressure.

[0067] Figure 3This is another example of a battery assembly according to this disclosure.

[0068] More specifically, Figure 3 A schematic layout of the busbar section 500 is shown.

[0069] As described above, the battery assembly 1000 according to this disclosure may include: a plurality of battery packs 100, each battery pack 100 including a cell 10; a housing 310 for housing the plurality of battery packs 100; a support portion 400 disposed inside the housing 310, spaced apart from any one of the plurality of battery packs 100; and a busbar portion 500 disposed inside the housing 310, supported by the support portion 400, and electrically connecting the cells 10 of any one of the battery packs 100, or electrically connecting the plurality of battery packs 100 to each other.

[0070] The busbar section 500 can connect the plurality of battery cells 10 in series or in parallel so that the battery assembly 1000 can be charged and discharged at a preset voltage.

[0071] Specifically, the busbar section 500 may include a first busbar 510, which is supported by the partition support section 410 or the side support section 420 and electrically connects the cells 10 of any one of the battery packs 100.

[0072] This is the case where any one of the battery packs 100 is positioned adjacent to one side of the housing 310.

[0073] In contrast, the busbar section 500 may include a first busbar 510, which is supported by the partition support section 410 and electrically connects the cells 10 of any one of the battery packs 100.

[0074] This refers to the case where any one of the battery packs 100 is located between another pair of adjacent battery packs 100.

[0075] That is, the support portion 400 may include a partition support portion 410, which is located between any one of the battery packs 100 and another battery pack 100 disposed adjacent to the any one of the battery packs 100. The busbar portion 500 may include a first busbar 510, which is supported by the partition support portion 410 and electrically connects the cells 10 of any one of the battery packs 100.

[0076] The multiple cells 10 included in any one of the battery packs 100 can be connected in series or in parallel through the first busbar 510.

[0077] In any of the battery packs 100, among the multiple cells 10 connected with the same polarity, the cells 10 can be referred to as a logical group (LG). That is, the logical group (LG) can be connected in parallel through the first busbar 510.

[0078] Each battery pack 100 may include one or more logic groups LG, which may be connected with different polarities. That is, each battery pack 100 may include one or more logic groups LG connected in series with each other.

[0079] As an example, the first cell 10A and the second cell 10B of any battery pack 100 may be included in different logic groups LG.

[0080] Since the different logic groups LG are connected in series with each other, any one of the battery packs 100 may include a first cell 10A and a second cell 10B arranged along a preset stacking direction. The first cell 10A and the second cell 10B may each include a protruding first terminal portion 11 and a second terminal portion 12 for electrical connection. The first terminal portion 11 and the second terminal portion 12 of the first cell 10A may be arranged to overlap with the second terminal portion 12 and the first terminal portion 11 of the second cell 10B along the stacking direction, respectively.

[0081] Furthermore, the arrangement of the first terminal portion 11 and the second terminal portion 12 of each of the first cell 10A and the second cell 10B in any one of the battery packs 100 can be the same as the arrangement of the first terminal portion 11 and the second terminal portion 12 of each of the first cell 10A and the second cell 10B in another battery pack 100. Thus, cells 10 included in different battery packs 100 can face terminal portions of opposite polarities. This is to simplify the connection path of the first busbar.

[0082] The busbar section 500 may further include a second busbar 520, which is supported by the partition support section 410 and electrically connects the plurality of battery packs 100.

[0083] The second busbar 520 can connect any one of the battery packs 100 in series with another battery pack 100 adjacent to the any one of the battery packs 100.

[0084] The busbar section 500 may further include a connecting busbar 530 that electrically connects the plurality of battery packs 100 to an external source.

[0085] After the plurality of battery packs 100 are electrically connected, the connecting busbar 530 may be disposed at the battery packs 100 that are electrically located at both ends of the plurality of battery packs 100.

[0086] The support portion 400 may include: a partition support portion 410 located between the plurality of battery packs 100; and a side support portion 420 extending parallel to the partition support portion 410 and located between the receiving body side portions 316, 317 or the receiving body side portions 316, 317 and the plurality of battery packs 100.

[0087] In addition, the first busbar 510 can be supported by the partition support 410 or the side support 420.

[0088] The second busbar 520 can be supported by the partition support 410. Additionally, the connecting busbar 530 can protrude outwards or into the electrical space 39 without separate support.

[0089] Figure 4 This is an example of the first busbar section according to this disclosure.

[0090] Specifically, Figure 4 It shows Figure 3 The S1 part.

[0091] The partition support 410 can be located between any one battery pack 100 (or the first battery pack BG1) and another battery pack 100 (or the second battery pack BG2).

[0092] The partition support 410 may be supported by the bottom surface 315 of the housing and from the bottom surface 315 of the housing (see reference). Figure 1 () Prominent form.

[0093] A portion of the first busbar 510 is supported by the partition support 410, and another portion of the first busbar 510 can electrically connect the battery cell 10 included in the first battery pack BG1.

[0094] Similarly, a portion of the first busbar 510 is supported by the partition support 410, and another portion of the first busbar 510 can electrically connect the cell 10 included in the second battery pack BG2.

[0095] If the first battery pack BG1 is located between the side support 420 and the partition support 410, then a portion of the first busbar 510 is supported by the partition support 410, and the other portion can electrically connect the battery cell 10 included in the first battery pack BG1.

[0096] Reference Figure 4 The first battery pack BG1 includes a first cell 10A and a second cell 10B stacked along the stacking direction. The first cell 10A and the second cell 10B may be included in different logic groups LG.

[0097] The first busbar 510 extends along the stacking direction and electrically connects the first terminal portion 11 of the first cell 10A to the second terminal portion 12 of the second cell 10B, and can extend toward and be supported by the partition support portion 410.

[0098] Similarly, the second battery pack BG2 includes a first cell 10A and a second cell 10B stacked along the stacking direction, and a first busbar 510. The first busbar 510 extends along the stacking direction and electrically connects the first terminal portion 11 of the first cell 10A to the second terminal portion 12 of the second cell 10B. It can also extend toward and be supported by the partition support portion 410.

[0099] The partition support 410 may include a support body 411 protruding from the bottom surface 315 of the housing and an insulating component 415 covering at least a portion of the outer surface of the support body 411.

[0100] More specifically, the insulating component 415 may cover the upper surface of the support body 411 and bend from two edges of the upper surface of the support body 411 toward the bottom surface 315 of the housing to cover a portion of the side surface of the support body 411.

[0101] Therefore, one cross-section of the insulating member 415 can be an inverted U-shape. That is, the insulating member 415 can be a channel shape facing the support body 411 and extending parallel to the support body 411. Alternatively, the insulating member 415 can be a shape that extends parallel to the support body 411 and is recessed to allow at least a portion of the support body 411 to be inserted.

[0102] Figure 5 schematically shown Figure 4 The electrical and mechanical connection status of the first busbar section.

[0103] The first busbar 510 may include: a first portion 511 that electrically connects the first terminal portion 11 of the first battery cell 10A to the second terminal portion 12 of the second battery cell 10B; and a second portion 512 that extends from the first portion 511 toward the partition support portion 410 and is attached to the partition support portion 410.

[0104] When the first part 511 performs the electrical connection function of the first busbar 510, the second part 512 can perform the mechanical connection function of the first busbar 510. Therefore, since the battery cell 10 is supported by the partition support 410 through the second part 512, the impact of external shocks and vibrations on the battery cell 10 can be minimized.

[0105] The first portion 511 may extend along the stacking direction. The length of the first portion 511 may be determined based on the adjacent logic group LG to which the first portion 511 is connected (refer to...). Figure 4 The number of cells 10 included in the battery can be changed.

[0106] As an example, Figure 5 An example of a logic group LG comprising two battery cells 10 is shown, such that the first portion 511 can electrically connect the first terminal portion 11 and the second terminal portion 12 of the two battery cells 10. Additionally, the second portion 512 can extend towards the partition support portion 410.

[0107] Multiple second portions 512 can be provided. The longer the first portion 511 extends along the stacking direction, the more second portions 512 can be provided. This is to provide more stable support for the first portion 511.

[0108] In addition, the length of the second portion 512 protruding from the first portion 511 may be greater than the length from the first portion 511 to the fastening member 450 described later.

[0109] Therefore, it is necessary to prevent the second part 512 included in any one of the battery packs 100 from interfering with the second part 512 included in another battery pack 100 disposed across the partition support 410.

[0110] Therefore, in any one of the battery packs 100 (or the first battery pack BG1) and another battery pack 100 (or the second battery pack BG2) disposed adjacent to the any one of the battery packs 100 (or the first battery pack BG1) across the partition support 410, the second portion 512 of each of the battery packs 100 and the other battery pack 100 can be alternately disposed on the partition support 410 along the stacking direction.

[0111] Furthermore, the first portion 511 and the second portion 512 can be integrally formed. Therefore, since the first busbar 510 is a single component, the manufacturing speed of the battery assembly 1000 can be increased.

[0112] Figure 6 Show Figure 4A cross section of the first busbar section and the partition support section.

[0113] The second part 512 can be attached to the partition support 410 by fastening member 450.

[0114] As described above, the length of the second portion 512 protruding from the first portion 511 can be greater than the length from the first portion 511 to the fastening member 450 described later. Therefore, the fastening member 450 can be located in the central region A of the partition support portion 410.

[0115] At least a portion of the fastening member 450 may be coated with an electrically insulating material. That is, the partition support 410 may be made of a metallic material for strength considerations. Therefore, the fastening member 450 may include a fastening body 451 forming a shape and a coating 452 of the fastening body 451 coated with an electrically insulating material.

[0116] Additionally, the battery assembly 1000 according to this disclosure may further include an insulating member 415 located between the partition support 410 and the second portion 512.

[0117] On the other hand, with the bottom surface 315 of the housing as a reference, the height of the partition support 410 can be lower than the height of the cell 10 of any one of the battery packs 100.

[0118] This is to prevent unnecessary space waste caused by the partition support 410.

[0119] Therefore, unlike the first part 511 which is planar, the second part 512 can be curved.

[0120] Figure 7 This is another example of the first busbar section according to this disclosure.

[0121] Specifically, Figure 7 It shows Figure 3 The S1 part.

[0122] The partition support 410 can be located between any one battery pack 100 (or the first battery pack BG1) and another battery pack 100 (or the second battery pack BG2).

[0123] The partition support 410 may be supported by the bottom surface 315 of the housing and from the bottom surface 315 of the housing (see reference). Figure 1 () Prominent form.

[0124] A portion of the first busbar 510 is supported by the partition support 410, and another portion of the first busbar 510 can electrically connect the battery cell 10 included in the first battery pack BG1.

[0125] Similarly, a portion of the first busbar 510 is supported by the partition support 410, and another portion of the first busbar 510 can electrically connect the cell 10 included in the second battery pack BG2.

[0126] If the first battery pack BG1 is located between the side support 420 and the partition support 410, then a portion of the first busbar 510 is supported by the partition support 410, and the other portion can electrically connect the battery cell 10 included in the first battery pack BG1.

[0127] Reference Figure 7 The first battery pack BG1 includes a first cell 10A and a second cell 10B stacked along the stacking direction. The first cell 10A and the second cell 10B may be included in different logic groups LG.

[0128] The first busbar 510 can extend from the first terminal portion 11 of the first battery cell 10A and the second terminal portion 12 of the second battery cell 10B toward the partition support portion 410, and a portion thereof is supported by the partition support portion 410. Furthermore, the first busbar 510 can extend along the stacking direction on the partition support portion 410 and electrically connect the first terminal portion 11 of the first battery cell 10A and the second terminal portion 12 of the second battery cell 10B.

[0129] Similarly, the second battery pack BG2 includes a first cell 10A and a second cell 10B stacked along the stacking direction, and a first busbar 510. The first busbar 510 extends from the first terminal portion 11 of the first cell 10A and the second terminal portion 12 of the second cell 10B toward the partition support portion 410 and is partially supported by the partition support portion 410. Furthermore, the first busbar 510 can extend along the stacking direction on the partition support portion 410 and electrically connect the first terminal portion 11 of the first cell 10A and the second terminal portion 12 of the second cell 10B.

[0130] The partition support 410 may include a support body 411 protruding from the bottom surface 315 of the housing and an insulating component 415 covering at least a portion of the outer surface of the support body 411.

[0131] More specifically, the insulating component 415 may cover the upper surface of the support body 411 and bend from two edges of the upper surface of the support body 411 toward the bottom surface 315 of the housing to cover a portion of the side surface of the support body 411.

[0132] Therefore, one cross-section of the insulating member 415 can be an inverted U-shape. That is, the insulating member 415 can be a channel shape facing the support body 411 and extending parallel to the support body 411. Alternatively, the insulating member 415 can be a shape that extends parallel to the support body 411 and is recessed to allow at least a portion of the support body 411 to be inserted.

[0133] Figure 8 schematically shown Figure 7 The electrical and mechanical connection status of the first busbar section.

[0134] The first busbar 510 may include: an extension member 513 extending from the first terminal portion 11 of the first battery cell 10A and the second terminal portion 12 of the second battery cell 10B toward the partition support portion 410 and supported by the partition support portion 410; and a connecting member 514 supported by the partition support portion 410 and electrically connected to the extension member 513.

[0135] While performing the mechanical connection function of the first busbar 510, the extension member 513 can also connect to the connection member 514 and perform the electrical connection function together with the connection member 514. That is, since the battery cell 10 is supported by the partition support 410 through the extension member 513, the impact of external shocks and vibrations on the battery cell 10 can be minimized.

[0136] The connecting component 514 can extend along the stacking direction.

[0137] The extension component 513 can be configured as a line or an L-shape. Depending on the number of cells 10 included in any logic group LG to which the extension component 513 is connected, the length and shape of the extension component 513 can be changed along the stacking direction.

[0138] When any logic group LG includes one battery cell 10, the extension member 513 can be in a straight line shape. Conversely, when any logic group LG includes multiple battery cells 10, the extension member 513 can be in an L-shape. Furthermore, as the number of battery cells 10 included in any logic group LG increases, the length of the portion of the extension member 513 used to connect to the terminals belonging to any logic group LG can be increased.

[0139] As an example, Figure 8 An example of a logic group LG comprising two battery cells 10 is shown, so that the extension member 513 can electrically connect the first terminal portion 11 and the second terminal portion 12 of the two battery cells 10, respectively. Additionally, the connection member 514 can be disposed on the partition support portion 410 and electrically connect the extension member 513.

[0140] The connecting member 514 may be disposed between the extension member 513 and the partition support 410. In addition, a portion of the connecting member 514 may overlap with a portion of the extension member 513.

[0141] In addition, it is necessary to prevent the connection member 514 included in any one of the battery packs 100 from interfering with the connection member 514 included in another battery pack 100 disposed across the partition support 410.

[0142] The connecting parts 514 of each of the battery packs 100 and the other battery pack 100 can be arranged on the partition support 410, partially overlapping along the stacking direction.

[0143] Therefore, the connection parts 514 of each of the battery packs 100 and the other battery pack 100 can be separated from each other to avoid interference.

[0144] Therefore, along the width direction from one battery pack 100 to the other battery pack 100, the sum of the widths of the connecting parts 514 of each of the battery pack 100 and the other battery pack 100 can be less than the width of the partition support 410.

[0145] That is, the length by which the extension member 513 and the partition support 410 overlap along the width direction can be less than half the width of the partition support 410.

[0146] In addition, in any one battery pack 100 and another battery pack 100 disposed adjacent to any one battery pack 100 across the partition support 410, the extension members 513 of each of the battery pack 100 and the other battery pack 100 may be alternately disposed on the partition support 410 along the stacking direction.

[0147] Figure 9 Show Figure 7 A cross section of the first busbar section and the partition support section.

[0148] The extension member 513 and the connecting member 514 can be attached to the partition support 410 by fastening member 450.

[0149] Specifically, in one embodiment, the connecting member 514 may be disposed between the extension member 513 and the partition support 410. Furthermore, since each of the extension members 513 overlaps with both the connecting member 514 and the partition support 410, the fastening member 450 may pass through the overlapping portion of each extension member 513 and the partition support 410 and be coupled to the partition support 410.

[0150] As described above, the length by which the extension member 513 and the partition support 410 overlap along the width direction can be less than half the width of the partition support 410.

[0151] Therefore, the fastening member 450 can be positioned off-center from the center region A of the partition support 410.

[0152] In one embodiment, at least a portion of the fastening member 450 may be coated with an electrically insulating material. That is, the partition support 410 may be made of a metallic material for strength considerations. Therefore, the fastening member 450 may include a fastening body 451 forming a shape and a coating 452 of the fastening body 451 coated with an electrically insulating material.

[0153] Additionally, the battery assembly 1000 according to this disclosure may further include an insulating member 415 disposed on the partition support 410 to electrically insulate the first busbar 510 from the partition support 410.

[0154] On the other hand, with the bottom surface of the housing as a reference, the height of the partition support 410 can be lower than the height of the cell 10 of any one of the battery packs 100.

[0155] This is to prevent unnecessary space waste caused by the partition support 410.

[0156] Therefore, the extension member 513 can be curved. In contrast, the connecting member 514 can be planar.

[0157] Alternatively, with the bottom surface of the housing as a reference, the height of the partition support 410 may be lower than the height of the cell housing 15 of any one of the battery packs 100.

[0158] This disclosure can be implemented in various variations, and its scope is not limited to the embodiments described above. Therefore, if a modified embodiment includes components within the scope of the claims of this disclosure, it should be considered to fall within the scope of this disclosure.

Claims

1. A battery assembly, comprising: Multiple battery packs, wherein the battery packs include battery cells; A housing is provided to accommodate the multiple battery packs; A support portion is disposed inside the housing, separated from any one of the plurality of battery packs; as well as The busbar section, located inside the housing, is supported by the support section and electrically connects the cells of any one of the battery packs, or electrically connects the multiple battery packs.

2. The battery assembly according to claim 1, wherein, The support includes a partition support, which is located between one of the battery packs and another battery pack disposed adjacent to the one stated battery pack. The busbar section includes a first busbar, which is supported by the partition support and electrically connects the cells of any one of the battery packs.

3. The battery assembly according to claim 2, wherein, Each of the battery packs includes a first cell and a second cell arranged along the stacking direction. The first battery cell and the second battery cell each include a protruding first terminal portion and a second terminal portion for electrical connection. The first terminal portion and the second terminal portion of the first battery cell are respectively disposed overlapping the second terminal portion and the first terminal portion of the second battery cell along the stacking direction.

4. The battery assembly according to claim 3, wherein, The first bus bar includes: The first part electrically connects the first terminal portion of the first battery cell to the second terminal portion of the second battery cell; and The second part extends from the first part toward the partition support and is attached to the partition support.

5. The battery assembly according to claim 4, wherein, The first part and the second part are integrally formed.

6. The battery assembly according to claim 4, wherein, The second part is attached to the partition support by fastening components.

7. The battery assembly according to claim 6, wherein, At least a portion of the fastening component is coated with an electrically insulating material.

8. The battery assembly according to claim 4, further comprising: An insulating component is located between the partition support and the second part.

9. The battery assembly according to claim 4, wherein, In any one of the battery packs and another battery pack disposed adjacent to the one of the battery packs across the partition support, the second portions of each of the battery packs are alternately disposed on the partition support along the stacking direction.

10. The battery assembly according to claim 3, wherein, The first bus bar includes: An extension member extends from the first terminal portion of the first battery cell and the second terminal portion of the second battery cell toward the separating support portion, and is supported by the separating support portion; and The connecting component is supported by the partition support and electrically connects the extension component.

11. The battery assembly of claim 10, wherein, The connecting component is disposed between the extension component and the partition support.

12. The battery assembly of claim 10, wherein, The extension component and the connecting component are connected to the partition support via fastening components.

13. The battery assembly according to claim 12, wherein, At least a portion of the fastening component is coated with an electrically insulating material.

14. The battery assembly of claim 10, further comprising: An insulating component is provided on the partition support to electrically insulate the first busbar from the partition support.

15. The battery assembly according to claim 2, wherein, The busbar section further includes a second busbar, which is supported by the partition support and electrically connects the plurality of battery packs.

16. The battery assembly according to claim 1, wherein, With the bottom surface of the housing as a reference, the height of the partition support is lower than the height of the cell of any one of the battery packs.

17. The battery assembly according to claim 1, wherein, The support portion includes: A separating support is located between any one of the battery packs and another battery pack disposed adjacent to the any one of the battery packs; and A side support portion, opposite to the partition support portion, is disposed between one of the two sides of the housing and the plurality of battery packs.

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