Battery pack

Abstract

The invention relates to a battery pack. The battery pack includes a pair of battery modules. Each battery module includes a battery cell and a busbar electrically connected to the battery cell. The battery pack further includes a pack case extending to cover a portion of a periphery of the pair of battery modules, a pack cover joined to the pack case and covering one side of the battery modules, and a partition wall member disposed between the pair of battery modules. A partition wall member is positioned between the busbar and the pack cover to cover the busbar.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2024-0202721, filed on December 31, 2024, with the Korean Intellectual Property Office, and Korean Patent Application No. 10-2024-0109889, filed on August 16, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This invention relates to a battery pack. Background Technology

[0004] In recent years, with growing concerns about the environment and the depletion of oil resources, research and development of electric vehicles, as environmentally friendly vehicles, has also increased.

[0005] Electric vehicles are vehicles powered by electricity and may include battery packs. Battery packs may include battery modules, and battery modules include multiple battery cells.

[0006] Multiple battery modules can be installed in a battery pack, and each of the multiple battery modules may include a battery cell and a bus electrically connected to the battery cell.

[0007] The busbar may be exposed outside the battery module. In this case, a short circuit may occur between the busbar and other components adjacent to it due to conductive foreign objects caused by a fire in the battery cell.

[0008] When a short circuit occurs between the busbar and other components adjacent to the busbar, it can accelerate thermal runaway in the battery pack, so there is a growing desire for a structure that can prevent this phenomenon. Summary of the Invention

[0009] This invention solves the aforementioned problems in the prior art and provides improvements to the prior art.

[0010] One aspect of the present invention provides a battery pack for preventing short circuits (e.g., phenomena) between the busbar and other components adjacent to the busbar.

[0011] The technical problems to be solved by the present invention are not limited to those described above. Those skilled in the art will understand any other technical problems not mentioned herein through the following description.

[0012] According to one aspect of the present invention, a battery pack includes a pair of battery modules. The pair of battery modules includes a first battery module and a second battery module. Each battery module includes a battery cell and a bus electrically connected to the battery cell. The first battery module includes a first battery cell and a first bus, and the second battery module includes a second battery cell and a second bus. The battery pack further includes a battery pack housing, a battery pack cover, and a partition wall member. The battery pack housing extends to cover a portion of the periphery of the pair of battery modules, the battery pack cover engages with the battery pack housing and covers one side of the battery modules, and the partition wall member is disposed between the first battery module and the second battery module. The partition wall member is disposed between the battery pack cover and the first bus to cover the first bus, and is disposed between the battery pack cover and the second bus to cover the second bus.

[0013] The partition wall component may include a partition wall body and a cover body. The partition wall body is disposed between the first busbar and the second busbar, and the cover body extends from the partition wall body and covers the first busbar and the second busbar respectively.

[0014] The cover body can be located between the first busbar, the second busbar, and the battery pack cover.

[0015] The cover body may include a pair of cover bodies, which include a first cover body and a second cover body. The partition wall body may include a first partition wall body connected to the first cover body and a second partition wall body connected to the second cover body.

[0016] The first and second partition wall bodies can be attached (for example, to each other).

[0017] The partition wall body can extend in one direction between the first battery module and the second battery module. The first cover body can be multiple first cover bodies, and the second cover body can be multiple second cover bodies. The multiple first cover bodies can be spaced apart in the one direction, and the multiple second cover bodies can be spaced apart in the one direction.

[0018] The angle between the partition wall body and the cover body can be an obtuse angle.

[0019] The angle between the partition wall body and the cover body can be (for example, approximately) 95 degrees.

[0020] The first battery module may further include a first sensing component formed on one side of the first battery cell in the longitudinal direction, and the second battery module may further include a second sensing component formed on one side of the second battery cell in the longitudinal direction.

[0021] The partition wall component may further include a cushioning pad attached to a surface of the partition wall body facing at least one of the first sensing component or the second sensing component.

[0022] The cushioning pad may include rubber.

[0023] The partition wall component may further include a sealing gasket disposed between the cover body and the battery pack cover.

[0024] The sealing gasket can seal the space between the cover body and the battery pack cover.

[0025] The sealing gasket may include rubber.

[0026] The battery pack housing may include a substrate and a spanning member, the substrate supporting a first battery module and a second battery module, and the spanning member being supported by the substrate and extending (e.g., via) between the first and second battery modules. A partition wall member may be supported by the spanning member.

[0027] The crossing member may include a longitudinal crossing member and a transverse crossing member, the longitudinal crossing member extending along the longitudinal direction of the battery pack, and the transverse crossing member extending in a direction intersecting the longitudinal crossing member. The partition wall member may be supported by the transverse crossing member.

[0028] The battery pack may further include a fixing member for securing (e.g., joining) the substrate and the battery pack cover. The battery pack housing may further include a fixing guide member passing through the fixing guide member. The partition wall member may include a cover body disposed between a first busbar and a second busbar, the cover body having a curved guide member cover region to cover the fixing guide member.

[0029] The battery pack may further include a longitudinal busbar and a busbar cover, the longitudinal busbar being disposed parallel to the longitudinal spanning member, and the busbar cover being located between the longitudinal busbar and the battery pack cover to cover the longitudinal busbar. The partition wall member may include a partition wall body and a longitudinal cover body, the partition wall body being disposed between the first busbar and the second busbar, and the longitudinal cover body extending from one end of the partition wall body in the longitudinal direction and covering the busbar cover.

[0030] The partition wall body can be formed from mica.

[0031] The cover body can be formed from mica. Attached Figure Description

[0032] The above and other objects and features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, wherein:

[0033] Figure 1A plan view of the components of a battery pack according to an exemplary embodiment of the present invention, excluding the battery pack cover;

[0034] Figure 2 A perspective view of a battery module according to an exemplary embodiment of the present invention;

[0035] Figure 3 An enlarged perspective view of the battery module and the first partition wall member according to an exemplary embodiment of the present invention;

[0036] Figure 4 A perspective view of a first partition wall member according to an exemplary embodiment of the present invention;

[0037] Figure 5 A side view of the partition wall body and cover body of the first partition wall member according to an exemplary embodiment of the present invention;

[0038] Figure 6 A side view showing the attachment of the first partition wall body and the second partition wall body of the first partition wall member according to an exemplary embodiment of the present invention;

[0039] Figure 7 A plan view of a partition wall member disposed between a pair of battery modules according to an exemplary embodiment of the present invention;

[0040] Figure 8 for Figure 1 A vertical sectional view of the components of the battery pack shown, excluding the battery pack cover.

[0041] Figure 9 A perspective view of a second partition wall member according to an exemplary embodiment of the present invention; and

[0042] Figure 10 An enlarged perspective view of a pair of battery modules and a second partition wall member according to an exemplary embodiment of the present invention. Detailed Implementation

[0043] The following is a detailed description of certain embodiments of the invention with reference to the accompanying drawings. When adding reference numerals to components in each drawing, it should be noted that identical or equivalent components are indicated by the same reference numerals even when shown in other drawings. Furthermore, detailed descriptions of known features or functions may be omitted when describing embodiments of the invention to prevent obscuring the essential points of the invention.

[0044] In describing components according to embodiments of the invention, terms such as first, second, "A", "B", (a), (b), etc., may be used. These terms are intended to distinguish one component from another, and they do not limit the nature, order, or sequence of the components. Unless otherwise specified, all terms used herein (including technical or scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Such terms, as defined in general dictionaries, should be interpreted as having the same or similar meaning as in the context of the relevant field, and should not be construed as having an ideal or overly formal meaning unless specified herein.

[0045] In the following text, reference will be made to Figures 1 to 10 The embodiments of the present invention will be described in detail below. In the following text, the first direction may be the X direction (front direction) or the direction opposite to the X direction (rear direction), the second direction may be the Y direction (left direction) or the direction opposite to the Y direction (right direction), and the third direction may be the Z direction (upward direction) or the direction opposite to the Z direction (downward direction). Here, the first direction may be the overall length direction of the electric vehicle, and the second direction may be the width direction of the electric vehicle.

[0046] Figure 1 This is a plan view of the components of a battery pack according to an exemplary embodiment of the present invention, excluding the battery pack cover. Figure 2 This is a perspective view of a battery module according to an exemplary embodiment of the present invention.

[0047] Reference Figure 1 and Figure 2 The battery pack 100 may include multiple battery modules 200, a battery pack housing 300, and a battery pack cover 500.

[0048] Multiple battery modules 200 can be installed in the battery pack housing 300. The multiple battery modules 200 can be arranged side by side in the battery pack housing 300 in a first direction (X direction or the opposite direction to X direction) and a second direction (Y direction or the opposite direction to Y direction).

[0049] like Figure 2 As shown, each battery module 200 may include multiple battery cells 201 (see reference). Figure 8 ), sensing component 210 and a pair of end plates 220.

[0050] The battery cell 201 can extend along a first direction (X direction or the opposite direction to X direction) and can be stacked in a second direction (Y direction or the opposite direction to Y direction). A pair of end plates 220 can be disposed on opposite sides of the plurality of battery cells 201 in the second direction (Y direction or the opposite direction to Y direction).

[0051] A pair of end plates 220 can press against a plurality of battery cells 201 disposed between the pair of end plates 220.

[0052] Sensing components 210 may be formed on opposite sides of the battery cell 201 along its longitudinal direction. Multiple battery cells 201 may be electrically connected to a busbar 211 of the sensing components 210. The busbar 211 may be exposed outside the battery module 200 along its longitudinal direction.

[0053] The battery module 200 may include a module cover 230 and a clamping member 240, the module cover 230 covering (e.g., at least) one side of the battery cell 201 in the third direction (Z direction), and the clamping member 240 pressing a pair of end plates 220 toward each other.

[0054] The battery pack housing 300 can be formed as part of the periphery surrounding the plurality of battery modules 200.

[0055] The battery pack housing 300 may include a substrate 310 supporting multiple battery modules 200 (see reference). Figure 8 ), and front member 320 and rear member 330, which are joined to two opposite end regions of substrate 310 in a first direction.

[0056] The battery pack housing 300 may include a pair of side members 340, which are engaged with two opposite end regions of the substrate 310 in a second direction (Y direction or the direction opposite to Y direction).

[0057] The front member 320 can cover the area of ​​the multiple battery modules 200 facing the first direction (X direction). The rear member 330 can cover the area of ​​the multiple battery modules 200 facing the opposite side of the first direction (opposite to the X direction).

[0058] A pair of side members 340 can cover the areas of multiple battery modules 200 facing opposite sides in a second direction (Y direction or the direction opposite to Y direction).

[0059] The battery pack cover 500 can be engaged with the front member 320, the rear member 330, and a pair of side members 340 of the battery pack housing 300. The battery pack cover 500 can be engaged with the battery pack housing 300 and can cover one side of the multiple battery modules 200 in the third direction (Z direction).

[0060] The battery pack housing 300 may include a spanning member 350 supported by a substrate 310. The spanning member 350 may separate a plurality of battery modules 200 from each other. The spanning member 350 may extend between a pair of spaced-apart battery modules 200.

[0061] The spanning member 350 may include a longitudinal spanning member 360 extending between the front member 320 and the rear member 330 in a first direction (X direction or the opposite direction to X direction), and a transverse spanning member 370 extending between one of a pair of side members 340 and the longitudinal spanning member 360 in a second direction (Y direction or the opposite direction to Y direction).

[0062] Each longitudinal spanning member 360 may extend (e.g., through) between a pair of battery modules 200 spaced apart from each other in a second direction (Y direction or the opposite direction to Y direction). The longitudinal spanning member 360 may extend along the longitudinal direction of the battery pack 100.

[0063] Each lateral crossing member 370 may extend (e.g., pass through) between a pair of battery modules 200 spaced apart from each other in a first direction (X direction or the opposite direction to X direction). The lateral crossing member 370 may extend in a direction perpendicular to the longitudinal crossing member 360.

[0064] High-voltage cables or longitudinal busbars 361 can be disposed on one side of the longitudinal crossing member 360 in the third direction (Z direction). Busbars 211 of the battery module 200 can be disposed on one side of the transverse crossing member 370 in the third direction (Z direction).

[0065] Meanwhile, a short circuit may occur between bus 211 and other components adjacent to bus 211 (e.g., phenomenon). When a short circuit occurs between bus 211 and other components adjacent to bus 211 (e.g., phenomenon), thermal runaway may occur inside the battery pack 100.

[0066] Therefore, for the stability of the battery pack 100, it is useful to prevent short circuits (e.g., phenomena) between the busbar 211 and other components adjacent to the busbar 211. To achieve this, the battery pack 100 according to an exemplary embodiment of the present invention may include a partition wall member 400.

[0067] The partition wall member 400 may be supported by the lateral spanning member 370. Each partition wall member 400 may be disposed between a pair of battery modules 200 spaced apart from each other in a first direction (X direction or the direction opposite to X direction).

[0068] The partition wall member 400 can be disposed between a pair of battery modules 200 that are spaced apart from each other in a first direction (X direction or the direction opposite to X direction).

[0069] The partition wall member 400 can separate a pair of battery modules 200 that are spaced apart from each other in a first direction (X direction or the opposite direction to X direction), and can be located between the bus 211 and the battery pack cover 500 to cover the bus 211.

[0070] The partition wall member 400 may include a first partition wall member 400a and a second partition wall member 400b having different shapes based on the longitudinal spanning member 360.

[0071] The first partition wall member 400a and the second partition wall member 400b may be disposed on opposite sides of the longitudinal spanning member 360. The second partition wall member 400b may be disposed on one side of the longitudinal spanning member 360 in the second direction (Y direction), while the first partition wall member 400a may be disposed on the opposite side of the longitudinal spanning member 360 in the second direction (Y direction).

[0072] Figure 3 This is an enlarged perspective view of a battery module and a first partition wall member according to an exemplary embodiment of the present invention. Figure 4 This is a perspective view of a first partition wall member according to an exemplary embodiment of the present invention. Figure 5 This is a side view of the partition wall body and cover body of the first partition wall member according to an exemplary embodiment of the present invention. Figure 6 A side view showing the attachment of the first partition wall body and the second partition wall body of the first partition wall member according to an exemplary embodiment of the present invention. Figure 7 This is a plan view of a partition wall member disposed between a pair of battery modules according to an exemplary embodiment of the present invention. Figure 8 for Figure 1 A vertical sectional view of the components of the battery pack shown, excluding the battery pack cover (e.g., the remaining parts).

[0073] Reference Figures 3 to 8 The first partition wall member 400a may include a partition wall body 410 disposed between a pair of busbars 211 and a cover body 420 extending from the partition wall body 410 and covering the pair of busbars 211.

[0074] The partition wall body 410 can extend along a second direction (Y direction or opposite direction) between a pair of battery modules 200 spaced apart from each other in a first direction (X direction or the opposite direction to X direction).

[0075] The partition wall body 410 may be supported by a transverse spanning member 370 and may be extended such that the second direction (Y direction or the direction opposite to the Y direction) corresponds to the longitudinal direction.

[0076] The cover body 420 can be disposed between the bus 211 and the battery pack cover 500, and can cover one side of the bus 211 in the third direction (Z direction).

[0077] The cover body 420 may include a first cover body 421 and a second cover body 422, which extend from one end of the partition wall body 410 facing a third direction (Z direction).

[0078] The first cover body 421 and the second cover body 422 can extend from the partition wall body 410 to face opposite directions.

[0079] Each of the first cover body 421 and the second cover body 422 can be configured as multiple. The multiple first cover bodies 421 can be spaced apart from each other in the longitudinal direction of the partition wall body 410. The multiple second cover bodies 422 can be spaced apart from each other in the longitudinal direction of the partition wall body 410.

[0080] Multiple first cover bodies 421 can cover multiple busbars 211, and multiple second cover bodies 422 can cover multiple busbars 211. One first cover body 421 and one second cover body 422 can cover a pair of busbars 211 that are separated from each other by a partition wall body 410.

[0081] At the same time, such as Figure 4 As shown, the first partition wall member 400a may further include a buffer pad 430 and a sealing pad 440.

[0082] The buffer pad 430 can be attached to a surface of the partition wall body 410 facing the battery module 200. More specifically, the buffer pad 430 can be attached to a surface of the partition wall body 410 facing the sensing component 210.

[0083] When the first partition wall member 400a is installed between a pair of battery modules 200 spaced apart in a first direction (X direction or the opposite direction to X direction), a pair of buffer pads 430 facing the pair of battery modules 200 can contact the sensing components 210 of the pair of battery modules 200, thereby guiding the position of the first partition wall member 400a.

[0084] The buffer pad 430 can be formed of rubber (e.g., EPDM or ethylene propylene rubber). Therefore, even if the first partition wall member 400a comes into contact with the sensing component 210, the sensing component 210 will not be damaged.

[0085] The separation distance between the sensing component 210 and the partition wall body 410 can be maintained by the buffer pad 430, thus improving the structural safety of the battery pack 100.

[0086] The sealing gasket 440 can be disposed on the cover body 420. In other words, the sealing gasket 440 can be disposed between the cover body 420 and the battery pack cover 500, and can seal the space between the cover body 420 and the battery pack cover 500.

[0087] The sealing gasket 440 may also be formed of rubber (e.g., EPDM or ethylene propylene rubber), so that even if the battery pack cover 500 comes into contact with the sealing gasket 440, the battery pack cover 500 or the first partition wall member 400a may be damaged.

[0088] Meanwhile, the separation distance between the battery pack cover 500 and the cover body 420 can be maintained by the sealing gasket 440, thereby ensuring the robustness of the battery pack 100. Therefore, even if external force is applied to the battery pack 100, no noise will be generated, thus improving user satisfaction.

[0089] like Figure 5 As shown, the angle (e.g., θ) between the partition wall body 410 and the cover body 420 can be an obtuse angle. The angle between the partition wall body 410 and the cover body 420 can be approximately 95 degrees.

[0090] This structure prevents damage to the partition wall component 400 during the bending of the cover body 420 from the partition wall body 410, thus improving productivity.

[0091] like Figure 6 As shown, the partition wall body 410 may include a first partition wall body 411 and a second partition wall body 412. The first partition wall body 411 may be connected to the first cover body 421, while the second partition wall body 412 may be connected to the second cover body 422.

[0092] The first partition wall body 411 can be integrally formed with the first cover body 421, and the second partition wall body 412 can be integrally formed with the second cover body 422. The first cover body 421 can be bent from the first partition wall body 411, and the second cover body 422 can be bent from the second partition wall body 412.

[0093] The first partition wall body 411 and the second partition wall body 412 can be attached by an adhesive (e.g., to each other). However, not limited thereto, the first partition wall body 411, the second partition wall body 412, the first cover body 421 and the second cover body 422 can be integrally formed.

[0094] like Figure 4 As shown, the partition wall body 410 may include a pair of guide member covers (e.g., a pair of guide member shielding areas) 413 having curvatures in opposite directions from the first partition wall body 411 and the second partition wall body 412.

[0095] The battery pack 100 may further include a fixing member (not shown) passing through the battery pack cover 500, the first partition wall member 400a, and the substrate 310, and the fixing member secures (e.g., engages) the battery pack cover 500, the substrate 310, and the first partition wall member 400a after the battery pack cover 500 is engaged with the battery pack housing 300. The fixing member may pass through a lateral crossing member 370 (see reference). Figure 1 This is done to secure (e.g., join) the transverse spanning member 370 to the substrate 310 and the battery pack cover 500 (e.g., together).

[0096] The battery pack housing 300 may include a fixing guide member 371 through which the fixing member passes. The fixing guide member 371 may have a hole extending in a third direction (Z direction or the direction opposite to Z direction).

[0097] A pair of guide member covers 413 may have curvature to cover and fix the guide member 371.

[0098] According to this example structure, although a fire may occur in the battery module 200, the fire can be prevented from spreading to the fixed guide member 371 made of metal (e.g., aluminum), thus improving safety.

[0099] The first partition wall member 400a may include a third cover body 423 and a fourth cover body 424, which are bent from the partition wall body 410 and have shapes different from those of the first cover body 421 and the second cover body 422.

[0100] The third cover body 423 can be bent from one end of the first partition wall body 411 facing the third direction (Z direction), while the fourth cover body 424 can be bent from one end of the second partition wall body 412 facing the third direction (Z direction). The third cover body 423 and the fourth cover body 424 can be bent from the first partition wall body 411 and the second partition wall body 412 in opposite directions, respectively.

[0101] The third cover body 423 and the fourth cover body 424 can be formed on the region of the first partition wall member 400a facing the longitudinal spanning member 360 of the battery pack 100. When viewed from a distance on one side in the third direction (Z direction), the third cover body 423 and the fourth cover body 424 can have a "T" shape.

[0102] The first partition wall member 400a may further include a longitudinal cover body 425, which bends from one end of the partition wall body 410 in the longitudinal direction of the partition wall body 410. The longitudinal cover body 425 may be formed on the side of the first partition wall member 400a adjacent to the longitudinal spanning member 360.

[0103] The battery pack 100 may include a longitudinal busbar 361 disposed parallel to the longitudinal spanning member 360, a busbar cover 362 located between the longitudinal busbar 361 and the battery pack cover 500 to cover the longitudinal busbar 361, and a connector 363 connected to a separate cable.

[0104] The third cover body 423, the fourth cover body 424, and the longitudinal cover body 425 can cover the bus cover 362. The third cover body 423 and the fourth cover body 424 can be located between the bus cover 362 and the battery pack cover 500 to cover the bus cover 362. The longitudinal cover body 425 can be located between the bus cover 362 and the connector 363 to cover the bus cover 362.

[0105] According to this example structure, the first partition wall member 400a can prevent fire from spreading from the battery module 200 to the longitudinal busbar 361, busbar cover 362 and connector 363, thus improving safety.

[0106] The aforementioned partition wall body 410, the first, second, third, and fourth cover bodies 421, 422, 423, and 424 of the cover body 420, and the longitudinal cover body 425 may be formed of mica. However, it is not limited thereto, and the partition wall body 410, the first to fourth cover bodies 421, 422, 423, and 424 of the cover body 420, and the longitudinal cover body 425 may be formed of a material with insulating and heat-resistant properties.

[0107] Therefore, as Figure 8 As shown, the first partition wall member 400a can prevent heat transfer between battery modules 200 spaced apart in a first direction (X direction or the opposite direction to X direction) (e.g., to each other), and can prevent foreign objects caused by a fire in the battery module 200 from causing short circuits (e.g., phenomena) between bus 121 and other components of bus 121 (e.g., adjacent) between bus 121 and other components of bus 121.

[0108] Figure 9 This is a perspective view of a second partition wall member according to an exemplary embodiment of the present invention. Figure 10 An enlarged perspective view of a pair of battery modules and a second partition wall member according to an exemplary embodiment of the present invention.

[0109] Reference Figure 9 and Figure 10 The length of the second partition wall member 400b may be shorter than the longitudinal (e.g., maximum) length of the first partition wall member 400a.

[0110] The second partition wall member 400b may be a partition wall member 400 disposed on one side of the longitudinally spanning member 360 in the second direction (Y direction).

[0111] The second partition wall member 400b may include a partition wall body 410 extending (e.g., through) between a pair of battery modules 200 spaced apart in a first direction (X direction or the opposite direction to X direction), and a first cover body 421 and a second cover body 422 bent from one end of the partition wall body 410 facing a third direction (Z direction).

[0112] Unlike the first partition wall member 400a, the second partition wall member 400b may not have the third cover body 423 and the fourth cover body 424.

[0113] The second partition wall member 400b may have a buffer pad 430 and a sealing pad 440.

[0114] The partition wall body 410 of the second partition wall member 400b may include a pair of guide member covers 413. The pair of guide member covers 413 may be bent in opposite directions from the first partition wall body 411 and the second partition wall body 412. The pair of guide member covers 413 may have curvature to cover and fix the guide member 371.

[0115] The second partition wall member 400b may include a longitudinal cover body 425 extending from one end of the partition wall body 410 facing the longitudinally spanning member 360. Unlike the longitudinal cover body 425 of the first partition wall member 400a, the longitudinal cover body 425 of the second partition wall member 400b may include four longitudinal cover bodies 425. The longitudinal cover bodies 425 of the second partition wall member 400b may also be formed on the side of the second partition wall member 400b adjacent to the longitudinally spanning member 360.

[0116] In an example embodiment, the longitudinal cover body 425 of the second partition wall member 400b may include four longitudinal cover bodies 425. Of the four longitudinal cover bodies 425, one pair of longitudinal cover bodies 425 may be bent from the first partition wall body 411, while the other (e.g., another) pair of longitudinal cover bodies 425 may be bent from the second partition wall body 412.

[0117] Of the four longitudinal cover bodies 425, one pair of longitudinal cover bodies 425 may be located between the bus cover 362 and the battery pack cover 500 to cover the bus cover 362, while another pair of longitudinal cover bodies 425 may be located between the bus cover 362 and the connector 363 to cover the bus cover 362.

[0118] According to this example structure, the second partition wall member 400b can prevent fire from spreading from the battery module 200 to the longitudinal busbar 361, busbar cover 362 and connector 363, thus improving safety.

[0119] In the example embodiments, the partition wall body 410, the first and second cover bodies 421 and 422 of the cover body 420, and the longitudinal cover body 425 described herein may be formed of mica. In other example embodiments, not limited thereto, the partition wall body 410, the first and second cover bodies 421 and 422 of the cover body 420, and the longitudinal cover body 425 may be formed of a material having insulating and heat-resistant properties.

[0120] Therefore, the second partition wall member 400b can prevent heat transfer between battery modules 200 spaced apart in the first direction (X direction or the opposite direction to X direction) (e.g., to each other), and can prevent foreign objects caused by a fire in the battery module 200 from causing a short circuit (e.g., phenomenon) between the busbar 121 and other components adjacent to the busbar 121.

[0121] For the shape or material of the structure (e.g., other than the structure of the second partition member 400b described above), a description of the shape or material of the structure of the first partition member 400a is provided.

[0122] According to the present invention, the partition wall member can cover the space between the bus and the battery pack cover 500. Accordingly, short circuits (e.g., phenomena) between the bus and other components adjacent to the bus can be prevented.

[0123] A partition wall member can be disposed between a pair of battery modules. Therefore, heat transfer between a pair of battery modules separated by the partition wall member (e.g., each other) can be prevented, thus preventing thermal runaway in the battery pack.

[0124] The partition wall component can cover the space between the bus cover and the battery pack cover 500, and can also cover the space between the bus cover and the connector. Therefore, thermal runaway in the battery pack can be prevented.

[0125] The buffer pads in the partition wall components can fix (e.g., provide) the separation distance between the battery module and the partition wall body. Therefore, the structural stability of the battery pack can be improved.

[0126] The sealing gasket of the partition wall component can seal the space between the battery pack cover 500 and the cover body. Therefore, even if vibration is applied to the battery pack, noise can be reduced and the structural stability of the battery pack can be improved.

[0127] The angle between the partition wall body and the cover body can be an obtuse angle, which can improve the productivity of the partition wall components.

[0128] Furthermore, the present invention can provide various effects that are directly or indirectly perceived.

[0129] While the invention has been described above with reference to exemplary embodiments and accompanying drawings, it is not limited thereto, and various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the invention.

[0130] Therefore, the exemplary embodiments described herein provide the scope of the invention, but are not intended to limit the spirit and scope of the invention. The scope of the invention should be interpreted based on the appended claims, and technical ideas within the scope of the claims should be included within the scope of the invention.

Claims

1. A battery pack, comprising: A pair of battery modules, comprising: A first battery module includes a first battery cell and a first bus electrically connected to the first battery cell; and The second battery module includes a second battery cell and a second bus electrically connected to the second battery cell; A battery pack housing configured to cover the periphery of the first battery module and the second battery module; A battery pack cover, which engages with the battery pack housing and is configured to cover one side of the first battery module and the second battery module; and A partition wall component is disposed between a first battery module and a second battery module. The partition wall component is disposed between a battery pack cover and a first busbar to cover the first busbar, and the partition wall component is disposed between a battery pack cover and a second busbar to cover the second busbar.

2. The battery pack according to claim 1, wherein, The partition wall component includes: The partition wall body is disposed between the first busbar and the second busbar; and The cover body is configured to extend from the partition wall body and cover the first busbar and the second busbar.

3. The battery pack according to claim 2, wherein, The cover body is disposed between the first busbar, the second busbar, and the battery pack cover.

4. The battery pack according to claim 2, wherein, The cover body includes a pair of cover bodies, which include a first cover body and a second cover body. The partition wall body includes a first partition wall body connected to the first cover body and a second partition wall body connected to the second cover body.

5. The battery pack according to claim 4, wherein, The first partition wall body and the second partition wall body are attached.

6. The battery pack according to claim 4, wherein, The partition wall extends in one direction between the first battery module and the second battery module. The first cover body comprises multiple first cover bodies, and the second cover body comprises multiple second cover bodies. Multiple first cover bodies are spaced apart in one direction, and multiple second cover bodies are spaced apart in one direction.

7. The battery pack according to claim 2, wherein, The angle between the partition wall body and the cover body is an obtuse angle.

8. The battery pack according to claim 2, wherein, The angle between the partition wall body and the cover body is 95 degrees.

9. The battery pack according to claim 2, wherein: The first battery module further includes a first sensing component formed on one side of the first battery cell in the longitudinal direction. The second battery module further includes a second sensing component formed on one side of the second battery cell in the longitudinal direction.

10. The battery pack according to claim 9, in, The partition wall component further includes a cushioning pad attached to a surface of the partition wall body configured to face at least one of the first sensing component or the second sensing component.

11. The battery pack according to claim 10, wherein, The cushioning pad includes rubber.

12. The battery pack according to claim 3, wherein, The partition wall component further includes a sealing gasket disposed between the cover body and the battery pack cover.

13. The battery pack according to claim 12, wherein, The sealing gasket is configured to seal the space between the cover body and the battery pack cover.

14. The battery pack according to claim 12, wherein, The sealing gasket comprises rubber.

15. The battery pack according to claim 1, wherein, The battery pack housing includes a base plate and a spanning member. The base plate is configured to support a first battery module and a second battery module, and the spanning member is supported by the base plate and configured to extend between the first battery module and the second battery module. The partition wall component is supported by a spanning component.

16. The battery pack according to claim 15, wherein, The crossing component includes: A longitudinally spanning member, configured to extend along the longitudinal direction of the battery pack; and The transverse crossing member is configured to extend in a direction intersecting the longitudinal crossing member. The partition wall component is supported by a transverse spanning component.

17. The battery pack of claim 16, further comprising: A fixing member configured to engage the substrate and the battery pack cover. The battery pack housing further includes a fixing guide member, which passes through the fixing guide member. The partition wall component includes a cover body disposed between the first busbar and the second busbar, the cover body including a guide member cover with curvature to cover the fixed guide member.

18. The battery pack of claim 16, further comprising: A longitudinal busbar, which is arranged parallel to the longitudinal spanning member; as well as The bus cover, located between the longitudinal bus and the battery pack cover, is used to shield the longitudinal bus. The partition wall component includes: The partition wall body is disposed between the first busbar and the second busbar; and A longitudinal cover body, configured to extend from the longitudinal end of the partition wall body and cover the manifold cover.

19. The battery pack according to claim 2, wherein, The partition wall is mainly formed of mica.

20. The battery pack according to claim 2, wherein, The main body of the cover is formed of mica.

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