Battery assembly

Abstract

The present application discloses a battery assembly comprising: a battery pack comprising a plurality of batteries arranged in a first direction D1 intersecting an upward / downward direction H; and a cover portion provided on one side of the battery pack based on the upward / downward direction H, in which the cover portion includes a partition wall region extending toward the battery pack in the upward / downward direction H, and in which the partition wall region is provided in a region between two adjacent batteries based on the first direction D1 in the battery pack.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2024-0036654, filed on March 15, 2024, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a battery assembly, and more particularly, to a battery assembly that can be applied to a battery module or a battery pack. Background Art

[0004] As demand for electric vehicles continues to grow, so too does the demand for batteries installed in them. Batteries can be categorized differently based on the materials that make up the battery's positive and negative electrodes. Among these batteries, lithium-ion batteries are widely used because they are lightweight and have high energy efficiency per unit volume. However, a disadvantage of lithium-ion batteries is that the high reactivity of lithium leads to a high risk of fire and explosion.

[0005] In order to solve the problems of lithium-ion batteries, it is necessary to provide a safety device in a battery module or battery pack equipped with lithium-ion batteries to prepare for fire or explosion of the battery.

[0006] For example, in the event that thermal runaway occurs in one or more of the multiple batteries installed in a battery module or battery pack, heat energy or gas generated by the thermal runaway may be introduced into other adjacent batteries, which may even cause thermal runaway in other batteries due to a chain effect.

[0007] However, in the conventional system, there is a problem in that the battery module or battery pack is not equipped with an appropriate means for suppressing a chain effect of thermal runaway in the event that thermal runaway occurs in some of the batteries. Summary of the Invention

[0008] The present disclosure is directed to improving the safety of battery modules and battery packs by preventing thermal runaway occurring in some batteries in the battery module or battery pack from propagating to other batteries.

[0009] In order to achieve the above-mentioned purpose, one aspect of the present disclosure provides a battery assembly, which includes: a battery pack, including a plurality of batteries arranged in a first direction D1 intersecting with an upward / downward direction H; and a cover portion, arranged on one side of the battery pack based on the upward / downward direction H, wherein the cover portion includes a partition wall area extending toward the battery pack in the upward / downward direction H, and wherein the partition wall area is arranged in an area between two adjacent batteries in the battery pack based on the first direction D1.

[0010] The partition wall region may at least partially overlap in the upward / downward direction H with two batteries, among the batteries in the battery pack, disposed adjacent to two opposite sides of the partition wall region based on the first direction D1.

[0011] The cover may further include a cover body configured to define a body of the cover, the partition wall region may extend from the cover body toward the battery pack in an upward / downward direction H, and the partition wall region may be integrated with the cover body.

[0012] The cover portion may further include a cover body configured to define a main body of the cover portion, the partition wall area may extend from the cover body toward the battery pack in an upward / downward direction H, the partition wall area and the cover body may be provided as separate components, and the partition wall area may include: a connecting portion fixedly connected to the cover body; and an extending portion extending from the connecting portion toward the battery pack.

[0013] The extending portion may extend from one end of the coupling portion based on the first direction D1 toward the battery pack.

[0014] The extending portion may extend from a region spaced apart from both opposite ends of the coupling portion based on the first direction D1 toward the battery pack.

[0015] The extending portion may include a first extending portion extending from one side of the coupling portion toward the battery pack; and a second extending portion extending from the other side of the coupling portion toward the battery pack and disposed to be spaced apart from the first extending portion.

[0016] The partition wall region may have a shape recessed in the upward / downward direction H from the cover body toward the battery pack.

[0017] The battery assembly may further include: end plates, which are arranged on two opposite sides of the battery pack based on a first direction D1; and a front cover and a rear cover, which are arranged on two opposite sides of the battery pack based on a second direction D2 intersecting the first direction D1 and the upward / downward direction H, wherein the cover portion is fixedly connected to the end plates or the front cover and the rear cover.

[0018] The cover portion may be fixedly coupled to the end plates or the front and rear covers by i) welding, ii) bolting, or iii) snap-fitting.

[0019] The cover portion may further include a cover body configured to define a main body of the cover portion, the partition wall area may extend from the cover body toward the battery pack in the upward / downward direction H, and the cover body may include: a first cover portion, which is arranged to face the battery pack in the upward / downward direction H, and the partition wall area extends from one side of the first cover portion; and a second cover portion, which extends from two opposite sides of the first cover portion based on the first direction D1 in the upward / downward direction H and is tightly attached to the battery pack to press the battery pack in the first direction D1.

[0020] The battery assembly may further include: a clamp member, one end and the other end of the clamp member being fixed to the second cover portion provided on two opposite sides of the first cover portion, the clamp member having an extending portion configured to connect the one end and the other end and spaced apart from the first cover portion in the upward / downward direction H.

[0021] The cover portion may further include a cover body configured to define a main body of the cover portion, and the cover portion may include: a first cover portion, which is configured to face the battery pack in the upward / downward direction H, and the partition wall area extends from one side of the first cover portion; and a second cover portion, which has a cover body, and the first cover portion may further include an extension area, the extension area extends from one end of the partition wall area in the first direction D1, and is configured to face the cover body with the partition wall area inserted between the extension area and the cover body.

[0022] The partition wall region may have a shape bent in the upward / downward direction H from one end of the extension region based on the first direction D1 .

[0023] The battery assembly may further include: a clamp member, one end and the other end of the clamp member are respectively fixed to two opposite sides of the battery pack based on the first direction D1, the clamp member has an extension portion, the extension portion is configured to connect the one end and the other end and is arranged to cross the upper surface or lower surface of the battery pack, wherein the cover portion is fixedly connected to the area of ​​the clamp member that crosses the upper surface or lower surface of the battery pack.

[0024] The cover may further include a clamp coupling region extending from the partition wall region in the first direction D1, and the clamp coupling region may be fixedly coupled to the clamp member.

[0025] The cover may further include a cover body configured to define a body of the cover, the partition wall region may extend from the cover body toward the battery pack in the upward / downward direction H, and the clamp coupling region may be provided between the cover body and the battery pack in the upward / downward direction H.

[0026] The partition wall region may extend in a second direction D2 intersecting the first direction D1 and the upward / downward direction H, the clamp coupling region may be provided in plurality, and the plurality of clamp coupling regions may be provided to be spaced apart from each other in the second direction D2.

[0027] The partition wall area may further include a plurality of cutout portions spaced apart from each other in the second direction D2, each cutout portion having a shape recessed inward from one side end based on the upward / downward direction H, and the clamp connection area may have a shape bent from the other side end of the cutout portion based on the upward / downward direction H in the first direction D1.

[0028] At least a portion of the partition wall region may be closely attached to a side surface of a battery positioned adjacent to the partition wall region in the first direction D1 among the batteries in the battery pack.

[0029] When the battery assembly is viewed from a side spaced apart from the battery assembly in the upward / downward direction H, the cover body may be disposed to overlap the entire area of ​​the clamp coupling region.

[0030] The battery assembly may further include: a shell body portion, having a space for accommodating a battery pack and open on one side based on the upward / downward direction H, the cover portion may be configured to cover the open area of ​​the shell body portion, the shell body portion may include: a plurality of partition areas, spaced apart from each other in the first direction D1, and configured to define a space therein for accommodating a battery pack, and the two opposite ends of the cover portion based on the first direction D1 may be fixedly connected to different partition areas, respectively.

[0031] The battery assembly may further include a cover portion disposed to face the battery pack with the cover portion interposed therebetween and configured to cover the cover portion.

[0032] The battery assembly may further include: a shell body portion having a space for accommodating the battery pack and being open on one side based on the upward / downward direction H, wherein the cover portion is configured to cover the open area of ​​the shell body portion, and wherein the battery pack includes a first battery group and a second battery group, and the first battery group and the second battery group are configured to face each other in a second direction D2 that intersects the first direction D1 and the upward / downward direction H.

[0033] The partition wall region may be provided as a plurality of partition wall regions, and some of the plurality of partition wall regions may be provided between two battery groups adjacent to each other in the first direction D1.

[0034] The case body portion may include: a plurality of partition regions spaced apart from each other in the first direction D1 and configured to define a space therein for accommodating the battery pack, and some of the plurality of partition wall regions may be disposed between the partition regions and the battery pack disposed adjacent to the partition regions.

[0035] Some of the plurality of partition wall regions may be respectively disposed i) between the partition region and a battery pack disposed adjacent to the partition region on one side based on the first direction D1 and ii) between the partition region and a battery pack disposed adjacent to the partition region on the other side based on the first direction D1.

[0036] The partition wall region may include: a first partition wall region disposed to face the first battery group in the upward / downward direction H; and a second partition wall region spaced apart from the first partition wall region in the second direction D2 and disposed to face the second battery group in the upward / downward direction H.

[0037] The partition wall region may include a single member disposed to face, in the upward / downward direction H, i) the first battery group, ii) the second battery group, and iii) a space between the first battery group and the second battery group.

[0038] The battery pack may further include a pad member disposed between two batteries adjacent to each other in the first direction D1 in the battery pack and closely attached to the two batteries, and the partition wall region may be relatively fixedly coupled to the pad member.

[0039] The battery assembly may further include: a contact member disposed between the partition wall region and the pad member, wherein one region of the contact member is connected to the partition wall region, and the other region of the contact member is connected to the pad member.

[0040] The pad member may include: an extension pad extending in the upward / downward direction H, and at least a partial area of ​​the extension pad is arranged between two batteries adjacent to each other in the first direction D1 in the battery pack; and a branch pad branching toward two opposite sides from an end of the extension pad based on the upward / downward direction H, and the contact member may be connected to one side of each of the branch pads branching toward the two opposite sides.

[0041] A region of the contact member facing a region where the branch pad branches from the extension pad may be connected to the partition wall region.

[0042] The battery assembly may further include: a fixing member, one side of the fixing member contacts the partition wall area, and the other side of the fixing member contacts the pad member, wherein the fixing member includes: a first insertion area extending from an area in contact with the partition wall area and configured to be inserted into the partition wall area; and a second insertion area extending from an area in contact with the pad member and configured to be inserted into the pad member.

[0043] According to the present disclosure, the safety of a battery module and a battery pack can be improved by preventing thermal runaway occurring in some of the batteries in the battery module or the battery pack from propagating to other batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a perspective view showing a first example of a battery assembly according to the present disclosure.

[0045] Figure 2 It is along Figure 1 A cross-sectional view taken along line aa in FIG.

[0046] Figure 3 It is along Figure 1 A cross-sectional view taken along line bb in FIG.

[0047] Figure 4 is a cross-sectional view showing a first modified example of a partition wall region applicable to a battery assembly according to the present disclosure.

[0048] Figure 5 is a cross-sectional view showing a second modified example of a partition wall region applicable to a battery assembly according to the present disclosure.

[0049] Figure 6 is a cross-sectional view showing a third modified example of a partition wall region applicable to a battery assembly according to the present disclosure.

[0050] Figure 7 is a cross-sectional view showing a fourth modified example of a partition wall region applicable to a battery assembly according to the present disclosure.

[0051] Figure 8 is a cross-sectional view showing a fifth modified example of a partition wall region applicable to a battery assembly according to the present disclosure.

[0052] Figure 9 is a perspective view illustrating a second example of the battery assembly according to the present disclosure, that is, an exploded perspective view illustrating a state in which a cover portion of the battery assembly is spaced apart from another component.

[0053] Figure 10 It shows Figure 9 sectional views of examples of coupling structures of the cover portion and the end plate or the cover portion and the front cover or the rear cover shown in .

[0054] Figure 11 It shows Figure 9 sectional view of another example of the coupling structure of the cover and the end plate or the cover and the front cover or the rear cover shown in .

[0055] Figure 12is a perspective view showing a third example of the battery assembly according to the present disclosure, that is, an exploded perspective view showing a state in which a cover portion of the battery assembly is spaced apart from another component.

[0056] Figure 13 It shows Figure 12 A perspective view of a state in which a cover portion of a battery assembly is coupled to another component of the battery assembly.

[0057] Figure 14 is a perspective view showing a cover portion of a fourth example of a battery assembly according to the present disclosure.

[0058] Figure 15 is a perspective view showing a fourth example of the battery assembly according to the present disclosure, that is, an exploded perspective view showing a state in which a cover portion of the battery assembly is spaced apart from another component.

[0059] Figure 16 It shows Figure 15 A perspective view of a state in which a cover portion of a battery assembly is coupled to another component of the battery assembly.

[0060] Figure 17 yes Figure 16 Vertical cross-section of .

[0061] Figure 18 is a perspective view showing a fifth example of the battery assembly according to the present disclosure, that is, an exploded perspective view showing a state in which a cover portion of the battery assembly is spaced apart from another component.

[0062] Figure 19 It shows Figure 18 A perspective view of a state in which a cover portion of a battery assembly is coupled to another component of the battery assembly.

[0063] Figure 20 is applied to Figure 18 and Figure 19 A three-dimensional view of the cover of the battery assembly.

[0064] Figure 21 is applied to Figure 18 and Figure 19 A perspective view of a modified example of the cover portion of the battery assembly in FIG.

[0065] Figure 22 1 is a perspective view showing a sixth example of the battery assembly according to the present disclosure, that is, a view showing a structure for coupling a case body portion and a cover portion of the battery assembly.

[0066] Figure 23 is a vertical cross-sectional view of a sixth example of a battery assembly according to the present disclosure.

[0067] Figure 24 is a vertical cross-sectional view showing a seventh example of the battery assembly according to the present disclosure.

[0068] Figure 25 yes Figure 24 Example of a top plan view of a battery assembly in FIG.

[0069] Figure 26 yes Figure 24 Another example of a top plan view of a battery assembly in FIG.

[0070] Figure 27 is a vertical cross-sectional view illustrating a first example of a coupling relationship between a partition wall region and a pad member of a battery assembly according to the present disclosure.

[0071] Figure 28 is a vertical cross-sectional view illustrating a second example of a coupling relationship between a partition wall region and a pad member of a battery assembly according to the present disclosure.

[0072] Figure 29 It is shown in Figure 28 A vertical cross-sectional view showing changes in the shapes of the partition wall region and the gasket member when the internal pressure of the battery cell in the battery assembly increases.

[0073] Figure 30 is a perspective view illustrating a third example of the coupling relationship between the partition wall region and the pad member of the battery assembly according to the present disclosure.

[0074] Description of Reference Numerals

[0075] 10: Battery assembly 100: Battery pack

[0076] 100a: Battery 110: First battery pack

[0077] 120: Second battery pack 200: Cover

[0078] 200-1: First cover portion 200-1a: Extension area of ​​the first cover portion

[0079] 200-2: Second cover portion 210: Partition wall area

[0080] 210a: cutout portion 212: coupling portion

[0081] 214: Extension portion 214a: First extension portion

[0082] 214b: Second extension portion 220: Cover body

[0083] 221: First cover part 222: Second cover part

[0084] 230: Clamp connection area 300: End plate

[0085] 400: front cover and rear cover 500, 500a: clamp member

[0086] 600: Shell body 610: Partition area

[0087] 650: Covering part 700: Pad member

[0088] 710: Extension pad 720: Branch pad

[0089] 800: Contact member 900: Fixing member

[0090] 910: First insertion area 920: Second insertion area

[0091] D1: first direction D2: second direction

[0092] H: Up / Down direction DETAILED DESCRIPTION

[0093] Hereinafter, a battery assembly according to the present disclosure will be described with reference to the accompanying drawings.

[0094] Battery components

[0095] Figure 1 is a perspective view showing a first example of a battery assembly according to the present disclosure. Figure 2 It is along Figure 1 A cross-sectional view taken along line aa in FIG. Figure 3 It is along Figure 1 A cross-sectional view taken along line bb in FIG.

[0096] The battery assembly 10 according to the present disclosure may include: a battery pack 100 including a plurality of batteries 100a arranged in a first direction D1 intersecting an upward / downward direction H; and a cover portion 200 provided on one side of the battery pack 100 based on the upward / downward direction H. For example, the cover portion 200 may be provided in a lower region of the battery pack 100. However, as Figures 1 to 3 As shown in FIG, the cover portion 200 may be disposed in the upper region of the battery pack 100. Hereinafter, for convenience of description, with reference to the drawings in this specification, the case where the cover portion 200 is disposed in the upper region of the battery pack 100 will be described with emphasis.

[0097] According to the present disclosure, the cover 200 may include a partition wall region 210 extending toward the battery pack 100 in the upward / downward direction H. In some embodiments, the cover 200 is disposed in an upper region of the battery pack 100, and the partition wall region 210 may have a shape extending downward toward the battery pack 100.

[0098] In the event that thermal runaway occurs in some of the batteries in the battery pack 100, the partition wall region 210 may be configured to prevent flames or high-temperature substances generated by the thermal runaway from propagating to other batteries in the battery pack 100 and the thermal runaway from spreading (see Figure 2 ). In addition, in the event that thermal runaway occurs in some of the batteries in the battery pack 100, the partition wall region 210 may be configured to guide the gas generated by the thermal runaway so that the gas is discharged to the outside through a predetermined route (see Figure 3 ).

[0099] To achieve the above-mentioned purpose, according to an embodiment of the present disclosure, the partition wall region 210 may be provided in the region between two adjacent cells 100a based on the first direction D1 of the battery pack 100. In this case, the configuration in which the partition wall region 210 is provided in the region between two adjacent cells 100a based on the first direction D1 does not merely refer to a case in which the partition wall region 210 is provided so as to partially overlap with the two adjacent cells 100a in the upward / downward direction H. That is, the configuration in which the partition wall region 210 is provided in the region between two adjacent cells 100a based on the first direction D1 may be interpreted as including a case in which, even though the partition wall region 210 is spaced apart from the two adjacent cells 100a in the upward / downward direction H, the partition wall region 210 is located between the two adjacent cells 100a when the battery pack 10 is viewed from the side based on the upward / downward direction H.

[0100] In some embodiments and as Figure 2 , the partition wall region 210 may be disposed so as to at least partially overlap with two batteries 100 a disposed adjacent to two opposite sides of the partition wall region 210 based on the first direction D1 among the batteries 100 a in the battery pack 100 in the upward / downward direction H. In these embodiments, in the event that thermal runaway occurs in some of the batteries 100 a in the battery pack 100, the partition wall region 210 may more effectively prevent the thermal runaway from spreading.

[0101] Figure 4 is a cross-sectional view showing a first modified example of a partition wall region applicable to a battery assembly according to the present disclosure.

[0102] On the other hand, continue to refer to Figures 1 to 4 The cover portion 200 of the battery assembly 10 may further include a cover body 220 configured to define the main body of the cover portion 200. For example, the cover body 220 may have a shape extending in the first direction D1. In this case, as shown in FIG. Figure 4As shown in , the partition wall area 210 can extend from the cover body 220 toward the battery pack 100 in the upward / downward direction H, and the partition wall area 210 can be integrated with the cover body 220. A configuration in which two or more components are integrated together may refer to a state in which two or more components are inseparably coupled to each other to the extent that the two or more components cannot be separated without irreversibly destroying at least one of the two or more components. In some embodiments, the two or more components may be connected to each other by a material having adhesive properties, and the two or more components may be separated from each other by removing the material without being damaged. Such an embodiment may not be regarded as a configuration in which two or more components are integrated together.

[0103] In some embodiments, the partition wall region 210 and the cover body 220 may be provided as separate components. Figures 5 to 8 Various features of an embodiment of the cover portion 200 in which the partition wall region 210 and the cover body 220 are provided as separate components are described.

[0104] Figure 5 is a cross-sectional view showing a second modified example of a partition wall region applicable to a battery assembly according to the present disclosure, and Figure 6 is a cross-sectional view showing a third modified example of a partition wall region applicable to a battery assembly according to the present disclosure. Figure 7 is a cross-sectional view showing a fourth modified example of a partition wall region applicable to a battery assembly according to the present disclosure, and Figure 8 is a cross-sectional view showing a fifth modified example of a partition wall region applicable to a battery assembly according to the present disclosure.

[0105] As described above, the cover portion 200 may further include the cover main body 220 , and the partition wall region 210 may extend in the upward / downward direction H from the cover main body 220 toward the battery pack 100 .

[0106] In some embodiments and with reference to Figure 5 and Figure 6 , the partition wall area 210 and the cover body 220 are provided as separate components, and the partition wall area 210 may include: a connecting portion 212, an upper surface or a lower surface of the connecting portion 212 being fixedly connected to the cover body 220; and an extending portion 214, extending from the connecting portion 212 toward the battery pack 100 in the upward / downward direction H. Figure 5 The following example is shown: the extension portion 214 has a shape extending from one end of the coupling portion 212 based on the first direction D1 toward the battery pack 100 in the upward / downward direction H. It can be understood that the cross section formed by cutting the partition wall area 210 parallel to the first direction D1 and the upward / downward direction H has an approximately "L" shape.

[0107] In some embodiments and as Figure 6 As shown in FIG, the extension portion 214 may extend in the upward / downward direction H from a region spaced apart in the first direction D1 from both opposite ends of the coupling portion 212 based on the first direction D1 toward the battery pack 100. It can be understood that the cross section formed by cutting the partition wall region 210 parallel to the first direction D1 and the upward / downward direction H has an approximately "T" shape. Figure 6 It is shown that the cross-sectional shape of the partition wall region 210 is a “T” shape having a symmetrical structure.

[0108] In some embodiments and as Figure 7 As shown in FIG, the extension portion 214 may be provided as a plurality of extension portions 214 extending from one coupling portion 212. That is, as shown in FIG, one extension portion 214 extending from one coupling portion 212 Figure 5 and Figure 6 Different, such as Figure 7 The extending portion 214 shown in FIG may include a first extending portion 214 a extending from one side of the coupling portion 212 based on the first direction D1 toward the battery pack 100, and a second extending portion 214 b extending from the other side of the coupling portion 212 based on the first direction D1 toward the battery pack 100. For example, the first extending portion 214 a and the second extending portion 214 b may extend from two opposite ends of the coupling portion 212 based on the first direction D1.

[0109] In some embodiments and as Figure 8 As shown in FIG, the partition wall region 210 may be formed as a partial region of the cover body 220 that is recessed toward the battery pack 100. More specifically, the partition wall region 210 may have a shape that is recessed in the upward / downward direction H from the cover body 220 toward the battery pack 100.

[0110] Will refer to Figures 9 to 26 Various examples of the cover portion 200 applicable to the battery assembly of the present disclosure are described.

[0111] Figure 9 is a perspective view showing a second example of a battery assembly according to the present disclosure, that is, an exploded perspective view showing a state in which a cover portion of the battery assembly is spaced apart from another component, and Figure 10 It shows Figure 9 sectional views of examples of coupling structures of the cover portion and the end plate or the cover portion and the front cover or the rear cover shown in . Figure 11 It shows Figure 9 sectional view of another example of the coupling structure of the cover and the end plate or the cover and the front cover or the rear cover shown in .

[0112] Reference Figures 9 to 11The battery assembly 10 according to the present disclosure may be a battery module including a plurality of batteries. The battery module may further include a configuration for applying a predetermined surface pressure to the battery.

[0113] That is to say, referring to Figure 9 The battery assembly 10 according to the present disclosure may further include: end plates 300, which are disposed on two opposite sides of the battery pack 100 based on the first direction D1. The end plates 300 may be configured to press against the battery 100a in the battery pack in the first direction D1 (see Figure 2 and Figure 3 etc.) to apply a predetermined surface pressure to the battery.

[0114] The battery assembly 10 may further include: a front cover and a rear cover 400, which are arranged on two opposite sides of the battery pack 100 based on a second direction D2 that intersects the first direction D1 and the upward / downward direction H. The second direction D2 may intersect perpendicularly with the first direction D1. For example, when the first direction D1 is a left / right direction, the second direction D2 may be a forward / backward direction. The front cover and the rear cover 400 can be used to protect a sensing block, which is provided in the battery module and is configured to sense the voltage of the battery cells in the battery module from the outside.

[0115] In some embodiments and with reference to Figures 9 to 11 , the cover 200 may be fixedly coupled to the end plate 300 and / or the front and rear covers 400. For example, the cover 200 may be fixedly coupled to the end plate 300 or the front and rear covers 400 by i) welding, ii) bolting, or iii) snap coupling. Figure 10 The cover 200 is shown fixedly coupled to the end plate 300 or the front and rear covers 400 by bolting, and Figure 11 The cover portion 200 is shown fixedly coupled to the end plate 300 or the front and rear covers 400 by a snap coupling.

[0116] Figure 12 is a perspective view showing a third example of the battery assembly according to the present disclosure, that is, an exploded perspective view showing a state in which a cover portion of the battery assembly is spaced apart from another component, and Figure 13 It shows Figure 12 A perspective view of a state in which a cover portion of a battery assembly is coupled to another component of the battery assembly.

[0117] and Figures 9 to 11 similar, Figure 12 and Figure 13 The battery assembly shown in may also be a battery module comprising a plurality of batteries. Figure 12 and Figure 13 The battery components shown in Figures 9 to 11The battery assembly shown in FIG. 1 may be different in that components corresponding to the above-mentioned end plates are integrated with the cover 200 .

[0118] In some embodiments and with reference to Figure 12 and Figure 13 According to the third embodiment of the present disclosure, the cover portion 200 of the battery assembly 10 may include a partition wall region 210 and further include a cover body 220 configured to define a main body of the cover portion 200. The partition wall region 210 may extend from the cover body 220 toward the battery pack 100 in the upward / downward direction H.

[0119] like Figure 12 and Figure 13 As shown in FIG, the cover body 220 may include: a first cover portion 221 disposed to face the battery pack 100 in the upward / downward direction H, with the partition wall region 210 extending from one side of the first cover portion 221; and a second cover portion 222 extending from two opposite sides of the first cover portion 221 based on the first direction D1 in the upward / downward direction H. The second cover portion 222 may be used as an end plate 300 (see FIG. Figure 9 Therefore, the second cover portion 222 can be closely attached to the two opposite surfaces of the battery pack 100 based on the first direction D1 and press the battery pack 100 in the first direction D1. Figure 13 , the battery assembly 10 may further include: a clamp member 500, one end and the other end of each clamp member 500 are respectively fixed to the second cover portion 222 provided on two opposite sides of the first cover portion 221, and the clamp member 500 includes an extension portion configured to connect the one end and the other end of the clamp member 500. The extension portion of the clamp member 500 may be spaced apart from the first cover portion 221 in the upward / downward direction H. In some embodiments, when the first cover portion 221 is provided in the upper area of ​​the battery assembly 10, the extension portion of the clamp member 500 is provided to face the lower area of ​​the battery assembly 10. In other embodiments, when the first cover portion 221 is provided in the lower area of ​​the battery assembly 10, the extension portion of the clamp member 500 may be provided to face the upper area of ​​the battery assembly 10.

[0120] Figure 14 is a perspective view showing a cover portion of a fourth example of a battery assembly according to the present disclosure, and Figure 15 is a perspective view illustrating a fourth example of the battery assembly according to the present disclosure (eg, an exploded perspective view illustrating a state in which a cover portion of the battery assembly is spaced apart from another component). Figure 16 It shows Figure 15 A perspective view of a state in which a cover portion of a battery assembly is coupled to another component of the battery assembly, and Figure 17yes Figure 16 Vertical cross-section of .

[0121] and Figures 9 to 13 similar, Figures 14 to 17 The battery assembly shown in may also be a battery module comprising a plurality of batteries. Figures 14 to 17 The battery components shown in Figures 9 to 11 The battery components shown in Figure 12 and Figure 13 The battery assembly shown in FIG. 1 may differ in that a plurality of cover portions are provided.

[0122] According to a fourth example of the present disclosure, the cover 200 may include a partition wall region 210 and a cover body 220 configured to define a body of the cover 200 .

[0123] In some embodiments and as Figures 14 to 17 As shown in FIG, the cover portion 200 may include: a first cover portion 200-1 disposed to face the battery pack 100 in the upward / downward direction H, with a partition wall region 210 extending from one side of the first cover portion 200-1; and a second cover portion 200-2 having a cover body 220. That is, according to the fourth example of the present disclosure, the partition wall region 210 and the cover body 220 may be provided as separate components.

[0124] The first cover portion 200-1 may be arranged closer to the battery pack 100 than the second cover portion 200-2. Figures 14 to 17 As shown in FIG, in a case where the cover portion 200 is disposed above the battery pack 100, the first cover portion 200-1 may be disposed below the second cover portion 200-2.

[0125] Continue to refer to Figures 14 to 17The first cover portion 200-1 may include an extension region 200-1a extending from one end of the partition wall region 210 in the first direction D1 and disposed facing the cover body 220 with the partition wall region 210 interposed therebetween. That is, according to the fourth example of the present disclosure, the extension region 200-1a, the partition wall region 210, and the cover body 220 may be disposed sequentially in a direction away from the battery pack 100. The extension region 200-1a may be disposed so as to directly face the battery pack 100. Therefore, if thermal runaway occurs in some of the batteries 100a in the battery pack 100, the heat or gas generated by the thermal runaway may first reach the extension region 200-1a of the cover portion 200. In this case, the extension region 200-1a may be in contact with, tightly attached to, or connected to the pad member 700 disposed between two batteries 100a disposed adjacent to each other in the first direction D1 among the plurality of batteries 100a in the battery pack 100. In this case, even if thermal runaway occurs in the battery 100a, heat or gas generated by the thermal runaway is unlikely to move to another adjacent battery 100a, but may move along the extension region 200-1a and be introduced into the space defined by the partition wall region 210 and the cover body 220.

[0126] On the other hand, the first cover portion 200-1 can be provided integrally. Therefore, the partition wall region 210 and the extension region 200-1a can also be integrated together. The partition wall region 210 can have a shape that bends from one end of the extension region 200-1a based on the first direction D1 in the upward / downward direction H. More specifically, the extension region 200-1a can be provided as a plurality of extension regions 200-1a provided in the first direction D1, and an empty space can be defined between two extension regions 200-1a adjacent to each other in the first direction D1. In this case, when the partition wall region 210 bends approximately 90 degrees toward the extension region 200-1a, the size of the partition wall region 210 can fill the empty space between the two extension regions 200-1a. The empty space between the two extension regions 200-1a can serve as a flow channel that allows heat or gas generated in the battery 100a to enter the space defined by the partition wall region 210 and the second cover portion 200-2.

[0127] Figure 18 is a perspective view showing a fifth example of the battery assembly according to the present disclosure, that is, an exploded perspective view showing a state in which a cover portion of the battery assembly is spaced apart from another component, and Figure 19 It shows Figure 18 A perspective view of a state in which a cover portion of a battery assembly is coupled to another component of the battery assembly. Figure 20 is applied to Figure 18 and Figure 19A perspective view of the cover portion of the battery assembly, and Figure 21 is applied to Figure 18 and Figure 19 A perspective view of a modified example of the cover portion of the battery assembly in FIG.

[0128] and Figures 9 to 11 、 Figure 12 、 Figure 13 and Figures 14 to 17 similar, Figures 18 to 21 The battery assembly shown in may also be a battery module comprising a plurality of batteries. Figures 18 to 21 The battery assembly shown in may be different from the battery assemblies according to the first to fourth examples in that the cover portion may be fixedly coupled to a clamp member to be described below.

[0129] According to a fifth example of the present disclosure, the battery assembly 10 may further include: clamp members 500a, one end and the other end of each clamp member 500a being respectively fixed to two opposite sides of the battery pack 100 based on the first direction D1, the clamp member 500a having an extension portion, the extension portion being configured to connect the one end and the other end and being disposed to traverse the upper surface or the lower surface of the battery pack 100. In this case, the extension portion of the clamp member 500a may be disposed to traverse the upper surface or the lower surface of the battery pack 100 in a direction parallel to the first direction D1. Figure 18 and Figure 19 An example is shown in which the clamp member 500 a includes an upper clamp member provided to traverse the upper surface of the battery pack 100 and a lower clamp member provided to traverse the lower surface of the battery pack 100 .

[0130] According to a fifth example of the present disclosure, the cover portion 200 provided in the battery assembly 10 can be fixedly coupled to an area of ​​the clamp member 500a that crosses the upper surface or lower surface of the battery pack 100 (i.e., the above-mentioned extension portion). More specifically, the cover portion 200 may further include a clamp coupling area 230 extending from the partition wall area 210 of the cover portion in the first direction D1, and the clamp coupling area 230 can be fixedly coupled to the clamp member 500a. That is, the clamp coupling area 230 can be provided in an area where the partition wall area 210 of the cover portion 200 and the clamp member 500a intersect with each other. The clamp coupling area 230 and the clamp member 500a can be arranged to face each other in the upward / downward direction. For example, the clamp coupling area 230 and the clamp member 500a can be fixedly coupled to each other by welding. Alternatively, the clamp coupling area 230 and the clamp member 500a can be fixedly coupled to each other by mechanical coupling using a bolt member or the like.

[0131] Reference Figure 20 and Figure 21In some embodiments, the cover portion 200 does not include the cover body 220 (see Figure 20 ), and in other embodiments includes a cover body 220 configured to cover the upper surface of the cover portion 200 and extending in the first direction D1 and the second direction D2 (see Figure 21 ).

[0132] Reference Figure 18 、 Figure 19 and Figure 21 In an embodiment where the cover portion 200 further includes a cover body 220 configured to define a main body of the cover portion, the partition wall region 210 may extend from the cover body 220 toward the battery pack 100 in the upward / downward direction H, and the clamp coupling region 230 may be provided between the cover body 220 and the battery pack 100 in the upward / downward direction H. Figure 20 As shown in , in embodiments where the cover portion 200 does not include a cover body, the battery assembly may further include an additional configuration for covering an upper region of the cover portion.

[0133] The clamp coupling region 230 may be provided as a plurality of clamp coupling regions 230. For example, the partition wall region 210 may have a shape extending in the second direction D2. In this case, the plurality of clamp coupling regions 230 may be spaced apart from each other in the second direction D2.

[0134] According to a fifth example of the present disclosure, the partition wall region 210, the cover body 220, and the clamp coupling region 230 of the cover portion 200 may be integrated (e.g., integrally formed). In this case, the clamp coupling region 230 may have a shape formed by cutting a portion of the partition wall region 210 and then bending the partition wall region 210.

[0135] For example, Figure 20 and Figure 21 As shown in FIG, the partition wall region 210 may include a plurality of cutout portions 210a spaced apart from each other in the second direction D2, each cutout portion 210a having a shape recessed inwardly from one side end based on the upward / downward direction H. More specifically, the cutout portion 210a may be formed on the side of the partition wall region 210 facing the battery pack 100 based on the upward / downward direction H (see FIG. Figure 18 and Figure 19 etc.) in the end area. Figure 20 and Figure 21 The cutout portion 210a is shown to have a shape that is recessed upward from the lower end of the partition wall region 210. It can be understood that the cutout portion 210a has an approximately "U" cross-sectional shape.

[0136] The clamp coupling region 230 may have a shape bent in the first direction D1 from the other side end of the cutout portion 210 a based on the upward / downward direction H. Figure 20 and Figure 21 The clamp coupling region 230 is shown to have a shape extending from the upper end of the cutout portion 210a and bent in the first direction D1. From the perspective of the manufacturing method, it can be understood that the clamp coupling region 230 is manufactured by forming a plurality of cutout portions 210a in a plate-like member having a shape extending in the second direction D2, and then bending the region forming the cutout portions 210a in the first direction D1.

[0137] In embodiments where the clamp coupling region 230 has the aforementioned shape, the clamp coupling region 230 may be located between the upper and lower ends of the partition wall region 210. According to a fifth example of the present disclosure, at least a portion of the portion of the partition wall region 210 that is positioned closer to the battery pack 100 than the clamp coupling region 230 may be inserted into the space between two battery cells 100a positioned adjacent to the partition wall region 210 in the first direction D1. More specifically, at least a portion of the partition wall region 210 may be tightly attached to the side surfaces of the battery cells 100a in the battery pack 100 that are positioned adjacent to the partition wall region 210 in the first direction D1. In this case, heat energy or gas generated by thermal runaway in the battery cell 100a may be more effectively prevented from diffusing to the adjacent battery cell 100a.

[0138] like Figure 21 As shown in , in an embodiment in which the cover portion 200 has a cover body 220 in a battery assembly according to a fifth example of the present disclosure, the cover body 220 may be configured to cover the entire area of ​​the clamp coupling region 230 from above. For example, when the battery assembly or the cover portion 200 is viewed from a side spaced apart from the battery assembly or the cover portion 200 in the upward / downward direction H, the cover body 220 may be arranged to overlap the entire area of ​​the clamp coupling region 230. It can be understood that the length of the cover body 220 extending from the partition wall region 210 in the first direction D1 is longer than the length of the clamp coupling region 230 extending from the partition wall region 210 in the first direction D1.

[0139] Figure 22 is a perspective view showing a sixth example of a battery assembly according to the present disclosure, that is, a view showing a structure for coupling a housing body portion and a cover portion of the battery assembly, and Figure 23 is a vertical cross-sectional view of a sixth example of a battery assembly according to the present disclosure.

[0140] Refer to above Figures 1 to 3 and Figures 9 to 21 Unlike the battery assemblies according to the first to fifth examples of the present disclosure described above, the battery assembly according to the sixth example of the present disclosure may be applied to a battery pack unit instead of a battery module.

[0141] In some embodiments and with reference to Figure 22 and Figure 23 The battery assembly 10 according to the sixth example of the present disclosure may further include a battery pack 100, a cover portion 200 including a partition wall region 210 and a cover body 220, an end plate 300, and a cushion member 700. The description of the battery pack 100, the partition wall region 210, the cover body 220, the cover portion 200, the end plate 300, and the cushion member 700 may be replaced with the description of the first to fifth examples of the present disclosure.

[0142] According to a sixth example of the present disclosure, the battery assembly 10 may further include: a case body portion 600 having a space for accommodating the battery pack 100 and being open at one side based on the upward / downward direction H. Figure 22 and Figure 23 The housing body portion 600 is shown to be opened upward. In this case, according to the sixth example of the present disclosure, the cover portion 200 may be provided to cover the open area of ​​the housing body portion 600.

[0143] As described above, the battery assembly 10 according to the sixth example of the present disclosure may be a battery pack. In this case, the housing body 600 may accommodate a plurality of battery packs 100. The housing body 600 may have a partition configuration for partitioning a space for accommodating a plurality of battery packs 100. For example, the housing body 600 may include: a plurality of partition areas 610, which are spaced apart from each other in the first direction D1 and are configured to define a space therein for accommodating the battery pack 100. In this case, according to the present disclosure, the ends of the cover portion 200 based on the first direction D1 may be fixedly coupled to different partition areas 610. The partition areas 610 may be configured to define an outer surface that is disposed to face the outside of the housing body 600.

[0144] The sixth example of the present disclosure may further include a configuration for protecting the cover portion 200 by covering the cover portion 200 from the outside. Figure 22 and Figure 23 As shown in , according to a sixth example of the present disclosure, the battery assembly 10 may further include a covering portion 650 disposed to face the battery pack 100 with the cover portion 200 interposed therebetween and configured to cover the cover portion 200. In the case where the battery assembly 10 is a battery pack, the covering portion 650 may be a cover of the battery pack. Figure 23 It is shown that the cover portion 200 is provided to cover the upper side of the case body portion 600 and the cover portion 650 is provided to cover the upper side of the cover portion 200 .

[0145] Figure 24 is a vertical sectional view showing a seventh example of a battery assembly according to the present disclosure, and Figure 25 yes Figure 24 Example of a top plan view of a battery assembly in FIG. Figure 26 yes Figure 24 Another example of a top plan view of a battery assembly in FIG.

[0146] Similar to the sixth example of the present disclosure, the battery assembly according to the seventh example of the present disclosure can also be applied to a battery pack unit. However, the seventh example of the present disclosure may differ from the sixth example of the present disclosure in that the cover portion 200 of the battery assembly also serves as the cover portion 650. At least with respect to the seventh example, the description of the battery pack 100, partition wall region 210, cover body 220, cover portion 200, end plate 300, and pad member 700 provided in the battery assembly can be replaced with the descriptions of the first to fifth examples of the present disclosure.

[0147] Reference Figures 24 to 26 The battery assembly 10 according to the seventh example of the present disclosure may further include: a case body portion 600 having a space for accommodating the battery pack 100 and being open on one side based on the upward / downward direction H. The cover portion 200 may be provided to cover the open area of ​​the case body portion 600. According to the seventh example of the present disclosure, the battery pack 100 may include a first battery pack 110 and a second battery pack 120, and the first battery pack 110 and the second battery pack 120 are provided to face each other in the second direction D2.

[0148] In some embodiments and as Figure 24 As shown in FIG, a plurality of partition wall regions 210 may be spaced apart from each other in the first direction D1. Some of the plurality of partition wall regions 210 may be disposed between two battery packs 100 adjacent to each other in the first direction D1. As described above, the partition wall region 210 disposed between two battery packs 100 adjacent to each other in the first direction D1 may be used to prevent thermal runaway occurring in one battery pack 100 from affecting another adjacent battery pack 100.

[0149] In some embodiments and as Figure 24 As shown in , the shell body portion 600 may further include: a plurality of partition areas 610, which are spaced apart from each other in the first direction D1 and are configured to define a space for accommodating the battery pack 100 therein. Some of the plurality of partition wall areas 210 may be provided between the partition area 610 and the battery pack 100 disposed adjacent to the partition area 610. More specifically, the partition wall areas 210 may be respectively provided on two opposite sides of the partition area 610 based on the first direction D1. That is, some of the plurality of partition wall areas 210 may be provided between i) the partition area 610 and the battery pack 100 disposed adjacent to the partition area 610 on one side based on the first direction D1, and ii) the partition area 610 and the battery pack 100 disposed adjacent to the partition area 610 on the other side based on the first direction D1 (see Figure 24 dotted area in the figure).

[0150] In the battery assembly 10 according to the seventh example of the present disclosure, a plurality of partition wall regions 210 may be provided to be spaced apart from each other in the second direction D2. Figure 25 As shown in , the partition wall region 210 may include: a first partition wall region 210-1, which is disposed to face the first battery pack 110 in the upward / downward direction H; and a second partition wall region 210-2, which is spaced apart from the first partition wall region 210-1 in the second direction D2 and is disposed to face the second battery pack 120 in the upward / downward direction H. It can be understood that the partition wall region 210 is disposed to face at least a plurality of battery packs 100 in the upward / downward direction H.

[0151] In contrast, in the battery assembly 10 according to the seventh example of the present disclosure, the partition wall region 210 may be provided to correspond to the battery pack 100 in a one-to-one manner. Figure 26 As shown in , the partition wall area 210 can be configured as or include a single component that is disposed to face i) the first battery group 110 , ii) the second battery group 120 , and iii) the space between the first battery group 110 and the second battery group 120 in the upward / downward direction H.

[0152] As described above, the partition wall region 210 can be configured to prevent thermal runaway occurring in a battery cell 100a within a battery pack 100 from affecting another battery pack 100. Due to the pressure increase caused by the gas generated by thermal runaway, the partition wall region 210 may be subjected to a significant impact. Therefore, to improve the durability of the partition wall region 210 against external forces, additional features associated with the partition wall region 210 may be added. The following describes a structure for improving the durability of the partition wall region 210 against external forces.

[0153] Figure 27 is a vertical cross-sectional view illustrating a first example of a coupling relationship between a partition wall region and a pad member of a battery assembly according to the present disclosure.

[0154] According to the present disclosure, the battery pack 100 may include: a pad member 700 disposed between two batteries 100a adjacent to each other in the first direction D1 in the battery pack 100 and tightly attached to the two batteries 100a. The description of the cover body, end plate, front cover, rear cover, etc. provided in the battery assembly 10 can be referred to above. Figures 1 to 6 The description of the instructions is replaced.

[0155] like Figure 27As shown in FIG, the partition wall region 210 may be fixedly coupled to the pad member 700. In some embodiments, the pad member 700 may be a component for applying a predetermined surface pressure to the battery 100a and / or supporting the partition wall region 210. The pad member 700 may be configured to improve the durability of the partition wall region 210 against external forces. Figures 28 to 29 Various examples in which a partition wall region of a battery assembly according to the present disclosure is fixedly coupled to a pad member are described in detail.

[0156] Figure 28 is a vertical cross-sectional view showing a second example of a coupling relationship between a partition wall region and a pad member of a battery assembly according to the present disclosure, and Figure 29 It is shown in Figure 28 A vertical cross-sectional view showing changes in the shapes of the partition wall region and the gasket member when the internal pressure of the battery cell in the battery assembly increases.

[0157] Reference Figure 28 and Figure 29 The battery assembly 10 may further include a contact member 800 disposed between the partition wall region 210 and the pad member 700. Figure 28 As shown in FIG, one surface of the contact member 800 may be in contact with the partition wall region 210, and the other surface of the contact member 800 may be in contact with the pad member 700. The description of the cover body, end plate, front cover, rear cover, etc. provided in the battery assembly 10 may be referred to above. Figures 1 to 6 The description of the instructions is replaced.

[0158] Furthermore, the contact member 800 may be connected to the partition wall region 210 and the pad member 700. In some embodiments and as Figure 28 and Figure 29 , one region of the contact member 800 may be connected to the partition wall region 210, and the other region of the contact member 800 may be connected to the pad member 700. A partial region of the region of the contact member 800 that contacts the partition wall region 210 may be connected to the partition wall region 210, and a partial region of the region of the contact member 800 that contacts the pad member 700 may be connected to the pad member 700.

[0159] For example, the pad member 700 may include: an extension pad 710 extending in the upward / downward direction H, with at least a partial area of ​​the extension pad 710 being disposed between two batteries 100a adjacent to each other in the first direction D1 in the battery pack 100; and a branch pad 720 branching from an end portion of the extension pad 710 based on the upward / downward direction H toward two opposite sides. The extension pad 710 and the branch pad 720 may be integrated. Figure 28 As shown in FIG, pad member 700 may be understood to have an approximate "Y" shape.

[0160] In this case, the contact member 800 may be connected to one side of each of the branch pads 720 branching toward two opposite sides. An area of ​​the contact member 800 facing an area where the branch pads 720 branch from the extension pad 710 may be connected to the partition wall area 210. The area of ​​the contact member 800 connected to the branch pads 720 may be formed outside the area of ​​the contact member 800 connected to the partition wall area 210 in the first direction D1.

[0161] In the embodiment where the partition wall region 210, the pad member 700, and the contact member 800 are connected as described above, Figure 28 As shown in FIG, the upper and lower surfaces of the contact member 800 are normally tightly attached to the partition wall region 210 and the cushion member 700, respectively. When thermal runaway occurs in the battery 100a, as the pressure in the space between the partition wall region 210 and the battery 100a increases, the remaining area of ​​the contact member 800, excluding the area connected to the cushion member 700, may move in the upward / downward direction H and become spaced apart from the cushion member 700. Furthermore, the partition wall region 210 may also move in the upward / downward direction H together with the contact member 800 and become spaced apart from the cushion member 700. However, even in this case, the connection area formed between the partition wall region 210 and the contact member 800 can maintain the sealing between the two adjacent battery cells 100a, which can more effectively prevent thermal runaway occurring in one of the battery cells 100a from affecting another battery cell 100a.

[0162] Figure 30 is a perspective view illustrating a third example of the coupling relationship between the partition wall region and the pad member of the battery assembly according to the present disclosure.

[0163] Reference Figure 30 The battery assembly may further include a fixing member 900, one side of which contacts the partition wall region 210, and the other side of which contacts the pad member 700. The description of the cover body, end plate, front cover, and rear cover provided in the battery assembly 10 may be referred to above. Figures 1 to 6 The description of the instructions is replaced.

[0164] The body of the fixing member 900 may have a substantially U-shaped cross-section. In some embodiments, the fixing member 900 may include a first insertion region 910 extending from a region in contact with the partition wall region 210 and configured to be inserted into the partition wall region 210; and a second insertion region 920 extending from a region in contact with the cushion member 700 and configured to be inserted into the cushion member 700. The first insertion region 910 and the second insertion region 920 may be configured to allow the fixing member 900 to be fixed to the partition wall region 210 and the cushion member 700, thereby securely coupling the partition wall region 210 and the cushion member 700 to each other.

[0165] The various examples of the battery assembly according to the present disclosure described with reference to the accompanying drawings are not intended to be applied exclusively, and the various examples of the battery assembly according to the present disclosure can be applied simultaneously without being contradictory to each other.

[0166] For example, referring to the above Figures 4 to 8 The various examples described with respect to the shape of the partition wall region can also be applied to the above-mentioned Figures 1 to 3 and Figures 9 to 26 The partition wall region described above is provided in a battery assembly configured as a battery module or a battery pack. Figures 27 to 30 The various examples described with respect to the partition wall region, the pad member, the bonding member, and the fixing member can also be applied to the above-mentioned Figures 1 to 3 and Figures 9 to 26 The battery assembly described is configured as a battery module or battery pack. In addition, i) the above reference Figures 4 to 8 The description of the shape of the partition wall area described above and ii) with reference to Figures 27 to 30 The description of the various examples described with respect to the partition wall region, the pad member, the bonding member, and the fixing member can of course be applied together with the above reference to Figures 1 to 3 and Figures 9 to 26 Described are battery assemblies configured as battery modules or battery packs.

[0167] The present disclosure has been described with reference to limited embodiments and drawings, but the present disclosure is not limited thereto. Within the technical spirit of the present disclosure and the scope equivalent to the appended claims, those skilled in the art can implement the present disclosure in various forms.

Claims

1. A battery assembly comprising: a battery pack including a plurality of batteries arranged in a first direction D1 intersecting an upward / downward direction H; as well as a cover portion provided on one side of the battery pack based on the upward / downward direction H, wherein the cover portion includes a partition wall region extending in the upward / downward direction H toward the battery pack, and The partition wall region is provided in a region between two adjacent batteries based on the first direction D1 among the plurality of batteries.

2. The battery assembly according to claim 1, wherein: The partition wall region at least partially overlaps the two adjacent cells among the plurality of cells of the battery pack in the upward / downward direction H, the two adjacent cells being disposed adjacent to two opposite sides of the partition wall region based on the first direction D1.

3. The battery assembly according to claim 1, wherein The cover portion further includes a cover body, the cover body defining a main body of the cover portion, The partition wall region extends in the upward / downward direction H from the cover body toward the battery pack, and The partition wall region is integrated with the cover body.

4. The battery assembly according to claim 1, wherein: The cover portion further includes a cover body, the cover body defining a main body of the cover portion, The partition wall region extends in the upward / downward direction H from the cover body toward the battery pack, The partition wall region and the cover body are provided as separate components, and The partition wall region comprises: a coupling portion fixedly coupled to the cover body; and An extending portion extends from the coupling portion toward the battery pack.

5. The battery assembly according to claim 4, wherein: The extending portion extends from one end of the coupling portion based on the first direction D1 toward the battery pack.

6. The battery assembly according to claim 4, wherein: The extending portion extends from a region spaced apart from two opposite ends of the coupling portion based on the first direction D1 toward the battery pack.

7. The battery assembly according to claim 4, wherein: The extension portion comprises: a first extending portion extending from one side of the coupling portion toward the battery pack; and The second extending portion extends from the other side of the coupling portion toward the battery pack and is disposed to be spaced apart from the first extending portion.

8. The battery assembly according to claim 3, wherein: The partition wall region has a shape that is recessed in the upward / downward direction H from the cover body toward the battery pack.

9. The battery assembly according to claim 1, further comprising: End plates, disposed on two opposite sides of the battery pack based on the first direction D1; as well as A front cover and a rear cover are provided at two opposite sides of the battery pack based on a second direction D2, the second direction D2 intersecting the first direction D1 and the upward / downward direction H, Wherein, the cover portion is fixedly coupled to the end plate or the front cover and the rear cover.

10. The battery assembly according to claim 9, wherein: The cover portion is fixedly coupled to the end plates or the front and rear covers by i) welding, ii) bolting, or iii) snap coupling.

11. The battery assembly according to claim 1, wherein: The cover portion further includes a cover body, the cover body defining a main body of the cover portion, The partition wall region extends in the upward / downward direction H from the cover body toward the battery pack, and The cover body comprises: a first cover portion disposed to face the battery pack in the upward / downward direction H, with the partition wall region extending from one side of the first cover portion; and The second cover portion extends in the upward / downward direction H from two opposite sides of the first cover portion based on the first direction D1 and is closely attached to the battery pack to press the battery pack in the first direction D1.

12. The battery assembly according to claim 11, further comprising: A clamp member having one end and the other end fixed to the second cover part provided on two opposite sides of the first cover part, the clamp member having an extension portion connecting the one end and the other end and spaced apart from the first cover part in the upward / downward direction H.

13. The battery assembly according to claim 1, wherein: The cover portion further includes a cover body, the cover body defining a main body of the cover portion, The cover portion comprises: a first cover portion disposed to face the battery pack in the upward / downward direction H, with the partition wall region extending from one side of the first cover portion; and The second cover portion has the cover body, and The first cover portion further includes an extension region extending from one end of the partition wall region in the first direction D1 and disposed to face the cover body with the partition wall region interposed therebetween.

14. The battery assembly according to claim 13, wherein: The partition wall region has a shape bent in the upward / downward direction H from one end of the extension region based on the first direction D1.

15. The battery assembly according to claim 1, further comprising: a clamp member having one end and the other end thereof fixed to two opposite sides of the battery pack based on the first direction D1, the clamp member having an extension portion connecting the one end and the other end and disposed to traverse an upper surface or a lower surface of the battery pack, The cover portion is fixedly coupled to a region of the clamp member that crosses an upper surface or a lower surface of the battery pack.

16. The battery assembly according to claim 15, wherein: The cover further includes a clamp coupling region extending from the partition wall region in the first direction D1, and The clamp coupling region is fixedly coupled to the clamp member.

17. The battery assembly according to claim 16, wherein: The cover portion further includes a cover body, the cover body defining a main body of the cover portion, The partition wall region extends in the upward / downward direction H from the cover body toward the battery pack, and The clamp coupling region is provided between the cover body and the battery pack in the upward / downward direction H.

18. The battery assembly according to claim 16, wherein: The partition wall region extends in a second direction D2 that intersects the first direction D1 and the upward / downward direction H. The clamp coupling area is provided in plural, and A plurality of clamp coupling regions are provided to be spaced apart from each other in the second direction D2.

19. The battery assembly according to claim 18, wherein: The partition wall region further includes a plurality of cutout portions spaced apart from each other in the second direction D2, each cutout portion having a shape recessed inward from one side end based on the upward / downward direction H, and The clamp coupling region has a shape bent from the other side end of the cutout portion based on the upward / downward direction H in the first direction D1.

20. The battery assembly according to claim 15, wherein At least a portion of the partition wall region is attached to a side surface of a battery positioned adjacent to the partition wall region in the first direction D1 among the batteries in the battery pack.

Images