Battery case

Abstract

The invention discloses a battery shell. The battery shell comprises a substrate, a first electrode and a second electrode, a side member disposed on one side of the substrate in the first direction; a cooling water channel disposed on an inner side of the side member in the first direction, and including a manifold extending in a second direction intersecting the first direction; and a cover module covering an inner side of the manifold and extending in the second direction to accommodate the manifold together with the side member. The cover module includes a support member that supports the manifold.

Description

[0001] Cross-citation of related applications

[0002] This application claims the benefit and priority of Korean Patent Application No. 10-2024-0110816, filed with the Korean Intellectual Property Office on August 19, 2024, the entire disclosure of which is incorporated herein by reference. Technical Field

[0003] This disclosure relates to a battery casing. Background Technology

[0004] In recent years, with increasing awareness of environmental issues and the depletion of oil resources, the research and development of electric vehicles (environmentally friendly vehicles) has attracted more attention. Electric vehicles include plug-in hybrid electric vehicles (PHEVs), battery electric vehicles (BEVs), and fuel cell electric vehicles (FCEVs).

[0005] Electric vehicles may include a battery casing that supports the battery cells. Furthermore, electric vehicles utilize the battery cells as a power source, and cooling water channels may be provided inside the battery casing to prevent the battery cells from overheating.

[0006] Meanwhile, when an electric vehicle is subjected to an impact, if the cooling water discharged from the cooling water channels comes into contact with the battery cells, a fire may occur in the battery cells. To prevent such fires, the need for structures that prevent the cooling water discharged from the cooling water channels from coming into contact with the battery cells has increased.

[0007] The statements in this section are provided only as background information in connection with this disclosure and may not constitute prior art. Summary of the Invention

[0008] This disclosure is made to address the aforementioned problems in the prior art while maintaining the advantages achieved by the prior art.

[0009] One aspect of this disclosure provides a battery housing for preventing cooling water discharged from cooling water channels from contacting the battery cells.

[0010] The technical problems to be solved by this disclosure are not limited to those described above, and any other technical problems not mentioned herein should be clearly understood by those skilled in the art from the following description.

[0011] According to one aspect of this disclosure, a battery housing includes: a substrate; a side member disposed on one side of the substrate in a first direction; a cooling water channel disposed inside the side member in the first direction, wherein the cooling water channel includes a manifold extending in a second direction intersecting the first direction; and a cover module covering the manifold inside the manifold in the first direction and extending in the second direction to accommodate the manifold together with the side member. Specifically, the cover module includes a support member supporting the manifold.

[0012] The covering module may further include: a partition member covering the inside of the manifold in the first direction; and a covering member disposed on one side of the support member in a third direction intersecting the first and second directions. Specifically, the covering member includes a collection space extending along the second direction on the side facing the support member.

[0013] The support member may include a connecting hole that extends upward in a third direction to communicate with the collection space.

[0014] The support member may include a covering recess formed on the side surface of the support member facing the covering member, and the covering member may include a pair of insert ribs that project toward the covering recess and are spaced apart from each other in a first direction to define a collection space between the pair of insert ribs.

[0015] The end of the connecting hole that communicates with the covering recess can be positioned between a pair of insertion ribs.

[0016] This pair of insert ribs can extend in the second direction.

[0017] The partition member may include: a plurality of fixing slots formed on the inside of the manifold in a first direction and configured to extend in a third direction; and a plurality of partitions spaced apart from each other in a second direction. In one embodiment, the fixing slots of the plurality of fixing slots are respectively inserted between the plurality of partitions.

[0018] The partition member may include: a fixing hole formed on the inside of the manifold in a first direction; and a plurality of partitions spaced apart from each other in a second direction, with the fixing hole located between the plurality of partitions.

[0019] The partition member may also include a pipe cover that extends from a plurality of partitions to surround the manifold on the third-upward side, thereby contacting the side member.

[0020] The pipe cover may include: a first portion extending from a plurality of partitions toward a side member; and a second portion extending upward from the first portion in a third portion to contact the side member.

[0021] The cooling water passage may include a branch pipe that connects to the manifold and is inserted into a fixing hole.

[0022] The manifold may include: a pipe body extending in a second direction and allowing cooling water to flow inside the pipe body; and a guide section connecting the pipe body and the branch pipe.

[0023] The support member may include: a connecting hole extending upward in a third direction to communicate with a collection space; and a flow space configured to communicate with the connecting hole and formed to be recessed on the side of the support member facing the partition member. The flow space also extends in a second direction.

[0024] The manifold may also include a protrusion that extends from the body and is spaced apart from the guide in a second direction, and the support member may include a support recess recessed to receive the protrusion.

[0025] The covering member may include a first injection hole through which material is injected to fill the space between the support member, the partition member and the manifold.

[0026] The covering member may also include a second injection hole formed on the side of the collection space opposite to the first injection hole, and the second injection hole is configured to discharge material injected through the first injection hole.

[0027] The support member may include an injection space formed in a region corresponding to the location of the first injection hole.

[0028] The battery housing may also include a cooling water drain pipe configured to communicate with a collection space and including a first end inserted into a cover member and a second end passing through a side member.

[0029] The covering component may also include a discharge pipe support that supports the first end of the cooling water discharge pipe.

[0030] The support member may include a covering recess formed on a side surface of the support member facing the covering member, and the covering member may include a pair of insert ribs that project toward the covering recess and are spaced apart from each other in a first direction to define a collection space between the pair of insert ribs. One end of the insert rib in a second direction may be spaced apart from one end of the support member in a second direction, and the discharge pipe support may be formed to connect one end of the insert rib and one end of the support member. Attached Figure Description

[0031] The above and other objects, features, and advantages of this disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings:

[0032] Figure 1 This is a perspective view of some components of a battery pack according to an embodiment of the present disclosure;

[0033] Figure 2This is a plan view of multiple components of the battery casing, excluding the cooling water channel, according to an embodiment of this disclosure;

[0034] Figure 3 This is a plan view of the cooling water passage according to an embodiment of the present disclosure;

[0035] Figure 4 This is a perspective view of the covering module according to an embodiment of the present disclosure;

[0036] Figure 5 This is a perspective view of multiple parts of a partition member, a support member, and a covering member according to embodiments of the present disclosure;

[0037] Figure 6 This is a bottom perspective view of the covering member according to an embodiment of the present disclosure;

[0038] Figure 7 This is a bottom perspective view of multiple parts of the cooling water channel and support member according to an embodiment of the present disclosure;

[0039] Figure 8 This is a view of the cover module and cooling water passage according to an embodiment of the present disclosure;

[0040] Figure 9 This is a schematic diagram of a manifold and peripheral components according to an embodiment of the present disclosure, wherein a portion of the manifold is omitted;

[0041] Figure 10 This is a cross-sectional view of a battery casing according to an embodiment of the present disclosure; and

[0042] Figure 11 This is a cross-sectional view of a battery casing according to an embodiment of the present disclosure.

[0043] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this disclosure in any way. Detailed Implementation

[0044] In the following, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. When adding reference numerals to components in the drawings, it should be noted that the same components are represented by the same reference numerals even when drawn in different drawings. Furthermore, in describing embodiments of the present disclosure, detailed descriptions of related known configurations and functions will be omitted when it is determined that such detailed descriptions might obscure the understanding of the embodiments of the present disclosure.

[0045] Furthermore, in describing components of embodiments of this disclosure, terms such as first, second, "A", "B", (a), and (b) may be used. These terms are used only to distinguish these components, and the nature, order, and sequence of the corresponding components are not limited by these terms. Unless otherwise defined, all terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Unless expressly defined in this disclosure, commonly used terms (such as those defined in dictionaries) should be interpreted as consistent with the context of the relevant art and not as having an ideal or overly formal meaning.

[0046] When a component, controller, device, element, or equipment of this disclosure is described as having a purpose or performing an operation or function, the component, controller, device, element, or equipment shall be regarded herein as "configured to" satisfy that purpose or perform that operation or function.

[0047] In the following text, reference will be made to Figures 1 to 11 The embodiments of this disclosure are described in detail. In the following text, the left-right direction can be a first direction, the front-back direction can be a second direction, and the vertical direction up-down can be a third direction.

[0048] Figure 1 This is a perspective view of some components of a battery pack according to an embodiment of the present disclosure. Figure 2 This is a plan view of the battery casing components other than the cooling water channel according to an embodiment of the present disclosure. Figure 3 This is a plan view of the cooling water passage according to an embodiment of the present disclosure.

[0049] refer to Figures 1 to 3 The battery pack 100 may include battery cells 200 and battery housings 300 supporting the battery cells 200. The battery cells 200 may be prismatic or cylindrical. The battery cells 200 may be lithium-ion batteries, but are not limited to these.

[0050] When the battery pack 100 is installed in an electric vehicle, it can be installed upside down. The orientation will be described below with reference to the case where the battery pack 100 is installed in an electric vehicle.

[0051] The battery housing 300 may define a battery housing space 301 for accommodating the battery cell 200. The battery housing 300 may include a substrate 310 that covers the area of ​​the battery cell 200 in the upward direction (opposite to the "Z" direction). When the battery pack 100 is manufactured, the substrate 310 may support the battery cell 200, but when the battery pack 100 is mounted on an electric vehicle, the substrate 310 may cover the upper side of the battery cell 200.

[0052] The battery housing 300 may include a front member 320 covering a region of the battery receiving space 301 in a forward direction (“X” direction) and a rear member 330 covering a region of the battery receiving space 301 in a rearward direction (opposite to the “X” direction). The battery housing 300 may include a transverse member 340 disposed between the front member 320 and the rear member 330 and positioned facing the rear member 330, wherein the battery receiving space 301 is located between the transverse member and the rear member. In other words, the transverse member 340 is disposed between the front member 320 and the rear member 330 and positioned across the battery receiving space 301 facing the rear member 330.

[0053] The front member 320, the rear member 330 and the lateral member 340 can extend in the left-right direction ("Y" direction or the opposite direction to "Y" direction) and can be connected to the substrate 310.

[0054] The battery housing 300 may include side members 350 disposed on opposite sides of the substrate 310 in the left-right direction. The side members 350 may be arranged in a pair to respectively cover the area of ​​the battery receiving space 301 in the right direction ("Y" direction) and the area in the left direction (opposite direction of the "Y" direction).

[0055] The battery housing 300 may include a cooling water channel 250 for cooling water configured to cool the battery cell 200.

[0056] The cooling water passage 250 may include a manifold 260 and branch pipes 270 branching from the manifold 260. The manifold 260 may extend in a front-rear direction, and the branch pipes 270 may be connected to the manifold 260 to extend in a left-right direction.

[0057] Manifold 260 can be connected to an inlet pipe (not shown) for introducing cooling water into battery housing 300, and multiple branch pipes 270 can be connected to manifold 260.

[0058] Cooling water can be introduced into either of a pair of manifolds 260 via an inlet pipe, and can then flow from manifold 260 to branch pipe 270. Cooling water introduced into branch pipe 270 can flow into the other manifold of the pair of manifolds 260.

[0059] The manifold 260 can be disposed inside the side member 350 in the left-right direction. Multiple branch pipes 270 can be configured to branch from the manifold 260 and be spaced apart from each other in the front-back direction. A branch space 271 for arranging battery cells 200 can be formed between the multiple branch pipes 270, and the multiple battery cells 200 can be spaced apart from each other with the branch pipes 270 interposed therebetween. In other words, the branch pipes 270 can be positioned between multiple spaced-apart battery cells 200.

[0060] The battery housing 300 may include a cover module 400 that covers the inner side of the manifold 260 of the cooling water passage 250 in a lateral direction. The cover module 400, together with the side member 350, may define a pipe receiving space 401 for receiving the manifold 260 (see...). Figure 10 The pipe housing space 401 can extend in the front-to-back direction to accommodate the manifold 260.

[0061] The cover module 400 may be formed in the left-right direction inside each side member 350 to protect the manifold 260, and the cover module may be a module for preventing the cooling water discharged from the manifold 260 from contacting the battery cell 200.

[0062] Figure 4 This is a perspective view of the covering module according to an embodiment of the present disclosure. Figure 5 This is a perspective view of multiple parts of a partition member, a support member, and a covering member according to embodiments of the present disclosure. Figure 6 This is a bottom perspective view of the covering member according to an embodiment of the present disclosure. Figure 7 This is a bottom perspective view of multiple parts of the cooling water channel and support member according to an embodiment of the present disclosure.

[0063] refer to Figures 4 to 7 The cover module 400 may include: a partition member 410 disposed on the underside of the substrate 310 (in the "Z" direction) (see... Figure 2 ); support member 420, disposed between partition member 410 and side member 350; and cover member 430, disposed on the underside of support member 420 (in the "Z" direction).

[0064] The partition member 410 can cover the manifold 260 in the left-right direction (see...). Figure 10 The manifold 260 can be supported between the partition member 410 and the side member 350. In other words, the manifold 260 can be installed between the partition member 410 and the support member 420. The cover member 430 can be disposed on the underside of the support member 420 to cover the underside of the support member 420.

[0065] The separator 410 may be formed of aluminum (AL) to enable it to be welded or mechanically bonded to the substrate 310 (see [link]). Figures 9 to 10 However, the material of the separating member 410 is not limited to this.

[0066] The support member 420 may be formed of ethylene propylene rubber (EPDM) to mitigate external impacts that may be applied to the manifold 260 and to isolate the manifold 260 from the external environment. However, the material of the support member 420 is not limited to this.

[0067] The cover member 430 may be made of plastic. This may be to relatively reduce the weight of the cover member 430. However, the material of the cover member 430 is not limited to this.

[0068] The separator 410 may cover the upper region of the manifold 260, and the cover 430 may cover the lower region of the support member 420. The separator 410 and the cover 430 may include portions disposed on the front side and facing inward in the left-right direction. This configuration can be used to cover a portion of the inlet pipe where the separator 410 and the cover 430 are connected to the manifold 260. The manifold 260 is inserted into the interior of the battery housing 300 in a manner separate from the battery cell 200 (see [link to battery housing 300]). Figure 1 ).

[0069] In one embodiment, the support member 420 and the cover member 430 may be configured to extend from the underside of the pipe receiving space 401 in the front-rear direction (see...). Figure 10 The cover member 430 may define a collection space 435 communicating with the pipe housing space 401. In other words, the cover member 430 may include a collection space 435 for collecting cooling water discharged from the manifold 260. The collection space 435 may be formed on the side of the cover member 430 facing the support member 420 and may extend in the front-rear direction.

[0070] The cover module 400 may include a cooling water drain pipe 440 formed on one side of the collection space 435 to drain cooling water collected through the collection space 435 to the outside of the battery housing 300. For this purpose, the cooling water drain pipe 440 may communicate with the collection space 435 to pass through the side member 350 (see...). Figure 11 ).

[0071] refer to Figures 10 to 11 The partition member 410 may include: a pipe cover 411 disposed on the upper side of the pipe receiving space 401 to cover the upper side of the manifold 260; and a partition 412 extending downward from the inner end of the pipe cover 411.

[0072] The pipe cover 411 can extend from the partition 412 to surround the upper side of the manifold 260 and can contact the side member 350.

[0073] The pipe cover 411 may include a first portion 411a extending from the partition 412 toward the side member 350 and a second portion 411b extending downward from the first portion 411a to contact the side member 350.

[0074] Multiple partitions 412 can be spaced apart from each other in the front-to-back direction, and the fixing holes can be circular or irregularly shaped through holes. For example, the fixing holes can be formed as fixing grooves 413 extending in the vertical direction. Fixing holes (e.g., fixing grooves) can be formed between multiple partitions 412. Branch pipes 270 can be inserted into fixing grooves 413.

[0075] The structure of the separator 412 can prevent the manifold 260 from contacting the battery cell 200 (see...). Figure 1 Contact between them.

[0076] The fixing groove 413 can be formed inside the manifold 260 in the left-right direction and can extend in the up-down direction, and the lower side of the fixing groove can be open. Multiple partitions 412 can be spaced apart from each other in the front-back direction, with the fixing groove 413 located between the partitions. The partitions 412 can protect the inside of the manifold 260 in the left-right direction.

[0077] The support member 420 can support the manifold 260 together with the partition member 410 while surrounding the manifold 260. The cover member 430 can be disposed on the opposite side of the support member 420 facing the partition member 410. The support member 420 can define a collection space 435 together with the cover member 430.

[0078] The support member 420 may include a covering recess 421 formed on a side surface facing the covering member 430. The covering recess 421 may extend in a front-rear direction. The support member 420 may include an injection space 422 formed in a region located outside the covering recess 421 in a left-right direction and extending in a vertical direction.

[0079] The support member 420 may include a communicating hole 425 extending in the vertical direction through the support member 420. The communicating hole 425 may be formed on the underside of the pipe receiving space 401 and may be configured to be spaced apart from each other in the front-rear direction along the covering recess 421. The communicating hole 425 may be a hole for collecting cooling water discharged from the manifold 260 into a collection space 435. The communicating hole 425 may extend in the vertical direction to communicate with the collection space 435.

[0080] The cover member 430 may include a pair of insertion ribs 431 that project toward the cover recess 421 and are spaced apart from each other in the left-right direction. The pair of insertion ribs 431 can be inserted into the cover recess 421. A collection space 435 may be formed between the pair of insertion ribs 431. In addition, one end of the connecting hole 425 that communicates with the cover recess 421 may be disposed between the pair of insertion ribs 431.

[0081] The lower side and opposite sides of the collection space 435 in the left-right direction can be covered by the insert rib 431, and the upper side of the collection space 435 can be covered by the support member 420. In other words, the collection space 435 can be defined between the covering member 430 and the support member 420.

[0082] A pair of insert ribs 431 can extend in the front-back direction. Therefore, the collection space 435 can also extend in the front-back direction. With this structure, cooling water collected in the collection space 435 through the connecting hole 425 can flow in the front-back direction.

[0083] The cover member 430 may include a support plate 434 disposed on the inner side of the partition 412. The support plate 434 may support the partition 412. The cover member 430 may include a first injection hole 432 and a second injection hole 433 passing through in the vertical direction.

[0084] After the partition member 410, manifold 260, support member 420 and cover member 430 are sequentially placed on the inside of the side member 350, the first injection hole 432 can be used as an injection material (e.g., resin) to fill the opening in the space between the partition member 410, manifold 260, support member 420 and cover member 430.

[0085] The second injection hole 433 can be used as an outlet for the injected material. The second injection hole is formed on the side of the collection space 435 opposite to the first injection hole 432 for the injected material. In other words, the injected material injected through the first injection hole 432 between the partition member 410, the manifold 260, the support member 420, and the cover member 430 can be discharged through the second injection hole 433 to the underside of the cover member 430.

[0086] When it is determined that the injected material injected through the first injection hole 432 is discharged through the second injection hole 433, it can be determined that the space between the partition member 410, the manifold 260, the support member 420 and the cover member 430 is filled with the injected material.

[0087] Filling the space between the partition member 410, manifold 260, support member 420 and cover member 430 can prevent cooling water discharged from manifold 260 from leaking to the outside of cover module 400 through any path other than the collection space 435 of cover module 400.

[0088] The injection space 422 of the support member 420 can be formed in the region corresponding to the position of the first injection hole 432. For example, when viewed from above or below, the injection space 422 and the first injection hole 432 can overlap each other in the front-back direction.

[0089] Using this structure, when the injection material is injected through the first injection hole 432, the injection material can flow more smoothly to the second injection hole 433 through the injection space 422, and through this injection space, the injection material can fill the space between the separator 410, the manifold 260, the support member 420 and the cover member 430.

[0090] Multiple first injection holes 432 and second injection holes 433 can be formed. The first injection holes 432 and second injection holes 433 can be alternately arranged in the front-back direction, while being spaced apart from each other in the left-right direction.

[0091] like Figure 7 As shown, the support member 420 may include a structure for supporting the manifold 260. The side of the support member 420 facing the partition member 410 may be configured to correspond to the curvature of the manifold 260.

[0092] The guide groove 426 and the support recess 427, both formed in a concave shape, can be provided on the side of the support member 420 facing the partition member 410. In other words, the guide groove 426 and the support recess 427 can be formed on the side of the support member 420 that is a concave feature. The guide groove 426 and the support recess 427 can be arranged to be spaced apart from each other in the front-rear direction. The width of the guide groove 426 in the front-rear direction can be formed to be greater than the width of the support recess 427 in the front-rear direction.

[0093] A flow space 428 may be provided on the side of the support member 420 facing the partition member 410, which is configured to communicate with the guide groove 426 and the support recess 427. The flow space 428 may extend in the front-rear direction so that the guide groove 426 and the connecting hole 425 communicate with each other. In other words, one side of the flow space 428 may be connected to the guide groove 426, and the other side of the flow space may be connected to the connecting hole 425. The flow space 428 may be formed to be recessed on the side of the support member 420 facing the partition member 410, so as to extend in the front-rear direction.

[0094] Manifold 260 may include: a body 261 extending in a front-rear direction to allow cooling water to flow within the body; and a guide 262 protruding from the body 261 to connect the body 261 and branch pipe 270. The guide 262 may be supported on a guide groove 426. Multiple portions of the circumferential surface of the guide 262 and the guide groove 426 may be spaced apart from each other, allowing cooling water discharged from manifold 260 to flow along the periphery of the guide 262 into a flow space 428. The cooling water can then flow through the flow space 428 to a connecting hole 425.

[0095] The manifold 260 may include a protrusion 263 that protrudes from the body 261 and is spaced apart from the guide portion 262 in the front-rear direction. The protrusion 263 may be supported in the support recess 427.

[0096] As described above, when the battery cell 200 and the battery pack cover (not shown) are installed on the battery housing 300 (see... Figure 1 When the battery pack 100 is mounted on the substrate 310 (see...), Figure 2 The battery pack 100 can be installed on an electric vehicle with its top and bottom sides inverted, so that the base plate 310 (see...) Figure 2 It is installed on the upper side of the electric vehicle.

[0097] This is because, compared to the case where the base plate of the battery pack is located on the lower side of the electric vehicle, the space utilization is increased when the base plate of the battery pack 100 is located on the upper side of the electric vehicle.

[0098] This is because, in the case where the battery pack substrate is located on the lower side of the electric vehicle, space must be provided on the lower side of the battery cell to absorb impact and protect the battery cell, and space must be separately provided on the upper side of the battery cell for flame or gas. In the case where the battery pack substrate is located on the upper side of the electric vehicle, space for absorbing impact and space for flow (e.g. for flame or gas) can be provided on the upper side of the battery cell, and therefore space is more practical in the latter case.

[0099] Figure 8 This is a view of the cover module and cooling water passage according to an embodiment of this disclosure.

[0100] refer to Figure 7 and Figure 8 In the configuration where the battery pack 100 is mounted on an electric vehicle, the manifold 260 can be more stably supported by the support member 420 when the guide portion 262 is supported on the guide groove 426 and the protrusion 263 is supported on the support recess 427.

[0101] Furthermore, since the support member 420 is a structure formed of ethylene propylene diene monomer (EPDM), even when equipped with the battery pack 100 (see... Figure 1 When an electric vehicle is impacted from the outer side in the left-right direction, the support member can absorb part of the impact, thus relatively reducing the impact transmitted to the manifold 260. In other words, since the support member 420 is made of ethylene propylene diene monomer (EPDM), the lateral (left / right) impact from the electric vehicle equipped with the battery pack 100 can be partially absorbed, thereby relatively reducing the impact transmitted to the manifold 260.

[0102] In addition, the manifold 260 can contact the support member 420 to prevent heat from being received from the external environment of the electric vehicle.

[0103] Figure 9 This is a schematic diagram of a manifold and peripheral components according to an embodiment of the present disclosure, wherein a portion of the manifold is omitted. Figure 10 This is a cross-sectional view of a battery casing according to an embodiment of the present disclosure. Figure 11 This is a cross-sectional view of a battery casing according to an embodiment of the present disclosure.

[0104] refer to Figures 9 to 11 In the structure in which the battery pack 100 is installed on an electric vehicle, the manifold 260 can be supported by the support member 420, and the partition member 410 can be disposed between the manifold 260 and the substrate 310.

[0105] In this situation, the cooling water discharged from the damaged portion of the manifold 260 due to the impact on the electric vehicle can flow towards the flow space 428 by gravity along the periphery of the guide portion 262 or the periphery of the pipe body 261. The cooling water flowing into the flow space 428 can be guided to the connecting hole 425 along the extension direction of the flow space 428. The cooling water guided to the connecting hole 425 can flow into the collection space 435 by gravity and can flow along the collection space 435 in the front-rear direction.

[0106] Because the space between manifold 260, partition member 410, support member 420, and cover member 430 is filled with injection material, cooling water discharged from manifold 260 is prevented from being discharged to the outside of cover module 400 through parts other than collection space 435 (see...). Figure 4 ).

[0107] In one embodiment, a cooling water drain pipe 440 may be disposed at one end of a collection space 435. The cooling water drain pipe 440 may include one end 441 inserted into a cover member 430 and another end 442 passing through a side member 350 while communicating with the collection space 435.

[0108] Using this structure, the cooling water flowing to the front of the battery housing 300 through the collection space 435 can be discharged to the outside of the battery housing 300 through the cooling water discharge pipe 440.

[0109] like Figure 11 As shown, the cover member 430 may include a discharge pipe support 436 that supports one end of the cooling water discharge pipe 440. The discharge pipe support 436 may extend in the front-rear direction and may be installed between a pair of insert ribs 431.

[0110] The front end of the cover member 430 can be positioned in front of the front end of the support member 420. This is because the cover member 430 must cover the upper side of the manifold 260 and the inlet pipe connected to the manifold 260, but the support member 420 only supports the manifold 260.

[0111] In the above structure, the front end of the support member 420 and the front end of the insertion rib 431 can be spaced apart from each other in the front-rear direction. The front end of the insertion rib 431 can be located on the front side of the front end of the support member 420. In this case, the discharge pipe support 436 can be configured to connect the front end of the support member 420 to the insertion rib 431.

[0112] Using this structure, the cooling water collected in the collection space 435 can flow through the discharge pipe support 436 to one end of the cooling water discharge pipe 440 and can be discharged to the outside of the battery casing 300.

[0113] The cooling water drain pipe 440 may be made of rubber so that it is not easily damaged even when the side member 350 is subjected to impact, but is not limited thereto.

[0114] According to this disclosure, since the cover module covers the inside of the manifold, it can prevent the cooling water from coming into contact with the battery cells even when the cooling water is discharged from the manifold.

[0115] Furthermore, according to this disclosure, since the cooling water flows along the collection space in the front-to-back direction and even when the cooling water is discharged from the manifold, it is discharged to the outside of the battery casing, the stability of the battery casing can be improved.

[0116] Furthermore, according to this disclosure, the manufacturing performance of the battery casing can be improved because the location of the cooling water channels can be guided.

[0117] Furthermore, according to this disclosure, the injected material is inserted into the interior of the cover module, which prevents cooling water from being discharged to the outside of the cover module even when the cooling water is discharged from the manifold.

[0118] Furthermore, various effects that can be directly or indirectly identified through the embodiments of this disclosure may be provided.

[0119] The above description is a simple exemplary description of the technical spirit of this disclosure, and those skilled in the art to which this disclosure pertains can make various corrections and modifications without departing from the basic characteristics of this disclosure.

[0120] Therefore, the embodiments disclosed herein are not intended to limit the technical spirit of this disclosure, but rather to describe it, and the scope of the technical spirit of this disclosure is not limited to these embodiments. The scope of protection of this disclosure should be interpreted by the appended claims, and all technical spirit within the equivalent scope should be interpreted as included within the scope of this disclosure.

[0121] List of reference numerals in the attached diagram:

[0122] 100: Battery pack

[0123] 200: Battery cell

[0124] 250: Cooling water passage

[0125] 260: manifold

[0126] 261: Pipe body

[0127] 262: Guidance Department

[0128] 263: Protrusion

[0129] 270: Branch pipe

[0130] 271: Branch Space

[0131] 300: Battery casing

[0132] 301: Battery housing space

[0133] 310: Substrate

[0134] 320: Front component

[0135] 330: Rear component

[0136] 340: Horizontal member

[0137] 350: Side component

[0138] 400: Coverage Module

[0139] 401: Pipeline space

[0140] 410: Separating component

[0141] 411: Pipeline Covering Section

[0142] 411a: First part of the pipe cover

[0143] 411b: Second part of the pipe cover

[0144] 412: Partition

[0145] 413: Fixing slot

[0146] 420: Supporting component

[0147] 421: Covering the recess

[0148] 422: Injection Space

[0149] 425: Connecting hole

[0150] 426: Guide groove

[0151] 427: Support recess

[0152] 428: Flowing Space

[0153] 430: Covering component

[0154] 431: Insertion Rib

[0155] 432: First injection hole

[0156] 433: Second injection hole

[0157] 434: Support plate

[0158] 435: Collection Space

[0159] 436: Discharge pipe support section

[0160] 440: Cooling water drain pipe

[0161] 441: One end of the cooling water discharge pipe

[0162] 442: The other end of the cooling water discharge pipe

Claims

1. A battery casing, comprising: substrate; A side member is disposed on one side of the substrate in a first direction; A cooling water passage is disposed inside the side member in the first direction, wherein the cooling water passage includes a manifold extending in a second direction intersecting the first direction; and A cover module covers the inside of the manifold in the first direction and extends in the second direction to accommodate the manifold together with the side member. The coverage module includes a support member configured to support the manifold.

2. The battery casing according to claim 1, wherein, The coverage module also includes: A separating member covering the inner side of the manifold in the first direction; and A covering member is disposed on one side of the support member in a third direction intersecting the first and second directions, wherein the covering member includes a collection space that extends along the second direction on the side facing the support member.

3. The battery casing according to claim 2, wherein, The support member includes a connecting hole that extends upward in the third party to communicate with the collection space.

4. The battery casing according to claim 3, wherein, The support member includes a covering recess formed on the side surface of the support member facing the covering member, and The covering member includes a pair of insert ribs that protrude toward the covering recess and are spaced apart from each other in the first direction to define the collection space between the pair of insert ribs.

5. The battery casing according to claim 4, wherein, One end of the connecting hole that communicates with the covering recess is located between the pair of insertion ribs.

6. The battery casing according to claim 4, wherein, The pair of insertion ribs extend in the second direction.

7. The battery casing according to claim 2, wherein, The partition component includes: A plurality of fixing slots are formed on the inner side of the manifold in the first direction and configured to extend upward in the third direction; and Multiple partitions are spaced apart from each other in the second direction, wherein the fixing grooves of the multiple fixing grooves are respectively located between the multiple partitions.

8. The battery casing according to claim 2, wherein, The partition component includes: A fixing hole is formed on the inner side of the manifold in the first direction; and Multiple partitions are spaced apart from each other in the second direction, and the fixing hole is located between the multiple partitions.

9. The battery casing according to claim 8, wherein, The partition member further includes: A pipe cover extends from the plurality of baffles to surround the manifold on the third-direction side, thereby contacting the side member.

10. The battery casing according to claim 9, wherein, The pipe cover includes: The first part extends from the plurality of partitions toward the side member; and The second part extends upward from the first part to contact the side member.

11. The battery casing according to claim 8, wherein, The cooling water channel also includes: A branch pipe is connected to the manifold and inserted into the fixing hole.

12. The battery casing according to claim 11, wherein, The manifold includes: A pipe body, extending in the second direction and configured to allow cooling water to flow within the interior of the pipe body; and The guide section connects the pipe body and the branch pipe.

13. The battery casing according to claim 12, wherein, The supporting component includes: A connecting hole extends upward from the third party to communicate with the collection space; and A flow space is configured to communicate with the connecting hole and is formed to be recessed on the side of the support member facing the partition member, wherein the flow space extends in the second direction.

14. The battery casing according to claim 12, wherein, The manifold further includes a protrusion that extends from the pipe body and is spaced apart from the guide portion in the second direction, and The support member includes a support recess that is recessed to receive the protrusion.

15. The battery casing according to claim 2, wherein, The covering component includes: A first injection hole is used to inject material to fill the space between the support member, the partition member, and the manifold.

16. The battery casing according to claim 15, wherein, The covering component further includes: A second injection hole is formed on the side of the collection space opposite to the first injection hole, and the second injection hole is configured to discharge the material injected through the first injection hole.

17. The battery casing according to claim 15, wherein, The support member includes an injection space formed in a region corresponding to the location of the first injection hole.

18. The battery casing according to claim 2, further comprising: A cooling water drain pipe is configured to communicate with the collection space and includes a first end inserted into the cover member and a second end passing through the side member.

19. The battery casing according to claim 18, wherein, The covering component further includes: The discharge pipe support supports the first end of the cooling water discharge pipe.

20. The battery casing according to claim 19, wherein, The support member includes a covering recess formed on the side surface of the support member facing the covering member, and The covering member includes a pair of insertion ribs that project toward the covering recess and are spaced apart from each other in the first direction to define the collection space between the pair of insertion ribs. Wherein, one end of the insertion rib in the second direction and one end of the support member in the second direction are spaced apart from each other in the second direction, and The discharge pipe support is configured to connect one end of the insertion rib and one end of the support member.

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