Housing of powertrain, powertrain, and vehicle

Abstract

The present application​ relates to the technical field of vehicles, and discloses a housing of a powertrain, a powertrain, and a vehicle. The housing comprises a shell and a sealing assembly. An accommodating cavity is formed in the interior of the shell, and the accommodating cavity is provided with a top wall and a bottom wall which are oppositely arranged. An operation opening is provided in the top wall, a wire harness mounting structure is provided on the bottom wall, and the wire harness mounting structure is used for fixing a high-voltage wire harness in the powertrain. The sealing assembly is detachably connected to the operation opening, and the sealing assembly is used for sealing or opening the accommodating cavity. According to the housing of the powertrain, the powertrain, and the vehicle provided by the present application, steps of assembling and disassembling the high-voltage wire harness in the powertrain are simplified.

Description

Powertrain housing, powertrain and vehicle

[0001] This application claims priority to Chinese patent application No. 202410034674.7, filed on January 9, 2024, with invention name “Shell and Vehicle”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of vehicle technology, and in particular to a powertrain housing, a powertrain, and a vehicle. Background Art

[0003] Since electric drive assemblies or hybrid drive assemblies involve high-voltage work, they require the use of high-voltage wiring harnesses with large current capacity.

[0004] In the related art, the assembly process of high-voltage wire harnesses is relatively complicated and requires a large number of assembly parts, which increases the manufacturing cost.

[0005] Summary of the Invention

[0006] In view of this, the present application provides a powertrain housing, a powertrain, and a vehicle.

[0007] Specifically, the embodiments of the present application include the following technical solutions:

[0008] A first aspect of an embodiment of the present application provides a powertrain housing, the powertrain housing comprising a shell and a sealing assembly;

[0009] The housing has an accommodating cavity formed therein, the accommodating cavity having a top wall and a bottom wall opposite to each other, the top wall being provided with an operating opening, and the bottom wall being provided with a wiring harness mounting structure for fixing a high-voltage wiring harness in a powertrain;

[0010] The sealing assembly is detachably connected to the operation opening, and the sealing assembly is used to seal or open the accommodating cavity.

[0011] Optionally, the opening area of ​​the operation opening is smaller than the area of ​​the top wall of the accommodating cavity.

[0012] Optionally, the orthographic projection of the wire harness mounting structure on the bottom wall is located inside the orthographic projection of the operation opening on the bottom wall.

[0013] Optionally, the center of the operation opening is located on the center line of a designated surface, and the designated surface is a surface of the operation surface of the wiring harness installation structure used for connecting with a tool and realizing loading and unloading.

[0014] Optionally, the sealing assembly includes a connecting piece, the connecting piece is provided with a mounting groove, and the opening direction of the mounting groove faces the bottom wall;

[0015] The shell includes a protrusion, which is connected to a side of the top wall away from the bottom wall and is arranged around the operation opening. The protrusion is located in the installation groove and is sealed with the installation groove.

[0016] Optionally, the connecting member comprises a main body portion, a lap portion and an extension portion connected in sequence;

[0017] The main body is located inside the raised portion and extends into the operation opening, and the main body is detachably connected to the top wall;

[0018] The overlapping portion is connected to an end of the main body away from the bottom wall, and overlaps an end of the raised portion away from the top wall;

[0019] The extension portion is connected to one end of the overlap portion away from the main body portion and extends toward the bottom wall. There is a gap between the extension portion and the main body portion. The main body portion, the overlap portion and the extension portion cooperate to form the installation groove.

[0020] Optionally, a groove is provided on the surface of the extension portion facing the main body portion;

[0021] The sealing assembly includes a first sealing member, which is accommodated in the groove and abuts against a groove bottom wall of the groove and an outer wall of the protrusion, respectively. The groove bottom wall is opposite to the outer wall of the protrusion.

[0022] Optionally, the first sealing member is a sealing ring, and the width of the groove is less than or equal to the outer diameter of the sealing ring.

[0023] Optionally, the groove is located on a surface of the extension portion close to the main body portion and is located in a middle area of ​​the extension portion.

[0024] Optionally, the groove extends to an edge of the extension portion away from the overlapping portion, so that the groove is open on a side away from the overlapping portion;

[0025] The sealing assembly further includes a blocking piece, which is engaged with the connecting piece, and at least a portion of the blocking piece is located on a side of the extension portion close to the bottom wall to close a side of the groove away from the overlapping portion.

[0026] Optionally, a plurality of snap-fit ​​structures are formed on a surface of the extension portion away from the main body portion, and the plurality of snap-fit ​​structures are arranged at intervals;

[0027] The blocking member includes a connecting ring and a plurality of connecting hooks, wherein the plurality of connecting hooks are connected to the connecting ring and are distributed at intervals along the circumferential direction of the connecting ring. The plurality of connecting hooks are respectively used for engaging with corresponding engaging structures.

[0028] Optionally, the axial length of the connecting ring is smaller than its radial length, the connecting ring is used to seal the side of the groove away from the overlapping portion, the multiple connecting hooks are vertically connected to the outer wall of the connecting ring, and the radial length is the distance between the outer wall and the inner wall of the connecting ring.

[0029] Optionally, an outer wall of the protrusion is formed with a slope on a side away from the bottom wall, and the slope is inclined in such a way that the further away from the bottom wall, the closer to the inner wall of the protrusion, and the inner wall of the protrusion is opposite to the outer wall.

[0030] A second aspect of an embodiment of the present application provides a powertrain, which includes the above-mentioned powertrain housing.

[0031] A third aspect of an embodiment of the present application provides a vehicle comprising the housing of the above-mentioned powertrain, or comprising the above-mentioned powertrain. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] FIG1 shows a cross-sectional view of a housing of a powertrain provided in an embodiment of the present application;

[0034] FIG2 shows a first structural schematic diagram of a housing of a powertrain provided in an embodiment of the present application;

[0035] FIG3 shows a second structural schematic diagram of the housing of the power assembly provided in an embodiment of the present application;

[0036] FIG4 is a cross-sectional view of a housing of another powertrain provided in an embodiment of the present application;

[0037] FIG5 shows a partial cross-sectional view of a housing of a powertrain provided in an embodiment of the present application;

[0038] FIG6 shows a partial enlarged view of the housing of the powertrain provided in an embodiment of the present application;

[0039] FIG7 shows a cross-sectional view of a connector provided in an embodiment of the present application;

[0040] FIG8 shows an exploded view of a sealing assembly provided in an embodiment of the present application;

[0041] FIG9 shows a schematic structural diagram of a blocking member provided in an embodiment of the present application;

[0042] FIG10 shows a schematic structural diagram of a connector provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] It should be noted that the housing provided in the embodiments of this application can be applied to an electric drive assembly or a hybrid drive assembly; when applied to an electric drive assembly, it is an electric drive housing, and when applied to a hybrid drive assembly, it is a hybrid drive housing. In the following solutions, this application describes the adaptability of the housing as an electric drive housing.

[0045] In order to make the technical solutions and advantages of the present application clearer, the powertrain housing, the powertrain and the vehicle will be described in detail below with reference to Figures 1 to 10.

[0046] The casing of the electric drive assembly provided in the related art is generally composed of a separately arranged bottom shell and a high-voltage cover plate. The bottom shell is provided with an EMC (Electromagnetic Compatibility) component, and the high-voltage wiring harness extends into the bottom shell and is connected to the EMC component. The high-voltage cover plate is connected to the bottom plate through multiple connecting parts (such as screws), and a circle of sealant is added to the high-voltage cover plate to achieve sealing between the cover plate and the bottom shell.

[0047] However, when assembling the whole vehicle, this setting requires first removing the high-voltage cover plate, then assembling the high-voltage wiring harness, and then reconnecting the high-voltage cover plate to the bottom shell and sealing it. The assembly process is relatively cumbersome. Not only does it require more connecting parts for connection, which increases the manufacturing cost, but the setting of the sealant makes it difficult to disassemble the high-voltage cover plate and the bottom shell, which increases the difficulty of assembling the whole vehicle.

[0048] In this regard, an embodiment of the present application provides a housing of a powertrain, as shown in Figures 1 and 2, the housing may include a shell 1 and a sealing assembly 2; a housing 11 is formed inside the shell 1, the housing 11 has a top wall 112 and a bottom wall 111 arranged opposite to each other, an operating opening 12 is provided on the top wall 112, and a wiring harness mounting structure 13 is provided on the bottom wall 111, the wiring harness mounting structure 13 is used to fix the high-voltage wiring harness in the powertrain; the sealing assembly 2 is detachably connected to the operating opening 12, and the sealing assembly 2 is used to seal or open the housing 11.

[0049] In the housing of the powertrain provided in the embodiment of the present application, a housing 1 is formed with a housing cavity 11 inside, and a wiring harness mounting structure 13 is provided on the bottom wall 111 of the housing cavity 11. The high-voltage wiring harness is connected to the EMC component and is fixed in the housing cavity 11 through the wiring harness mounting structure 13. Since an operating opening 12 is provided on the top wall 112 of the housing 1, when the high-voltage wiring harness needs to be loaded and unloaded, it is only necessary to remove the sealing assembly 2, and then operate the wiring harness mounting structure 13 through the operating opening 12 to fix or remove the high-voltage wiring harness, and then reinstall the sealing assembly 2 to achieve sealing, thereby completing the loading and unloading process of the high-voltage wiring harness. Compared with the split electric drive housing with an independent cover plate in the related art, the electric drive housing provided in the embodiment of the present application simplifies the loading and unloading steps, reduces the number of connecting parts, and the sealing method is simple and reliable.

[0050] In addition, since the sealing assembly 2 provided in the embodiment of the present application can be detachably connected to the operating opening 12, the operator can open or seal the operating opening 12 at any time according to needs. Compared with the sealing method using sealant in the related art, the operation is more convenient and easy to load and unload.

[0051] It should be understood that the accommodating cavity 11 of the housing 1 is used to accommodate the EMC component. The high-voltage wire harness can be connected to the EMC component and fixed in the accommodating cavity 11 through the wire harness mounting structure 13 .

[0052] In some embodiments, the wire harness mounting structure 13 may be a bolt, a clip, or other connecting part capable of achieving a fixing function. Those skilled in the art may select and adjust the type of the wire harness mounting structure 13 based on actual needs. For example, the wire harness mounting structure 13 is a fixing bolt with a threaded hole formed on the bottom wall 111 of the accommodating chamber 11. The high-voltage wire harness is located between the nut of the fixing bolt and the bottom wall 111 of the accommodating chamber 11. The fixing bolt and the threaded hole are connected to secure the high-voltage wire harness.

[0053] In some embodiments of the present application, as shown in Figures 3 and 4, the opening area of ​​the operating opening 12 is smaller than the area of ​​the top wall 112 of the accommodating cavity 11, that is, the housing 1 is a one-piece structure, and the top wall 112 of the accommodating cavity 11 is equivalent to the high-voltage cover plate in the related art. The operating opening 12 is located inside the top wall 112. When the high-voltage wire harness needs to be loaded or unloaded, it is only necessary to operate the wire harness mounting structure 13 through the operating opening 12 on the top wall 112 of the accommodating cavity 11 to achieve the fixing or removal of the high-voltage wire harness. Compared with the split electric drive housing in the related art, this simplifies the loading and unloading steps and reduces the number of connecting parts.

[0054] It should be noted that the operation opening 12 is an opening that is opened through the top wall 112 , and the top wall 112 includes the operation opening 12 and other parts except the operation opening 12 .

[0055] In some embodiments of the present application, as shown in FIG3 , the orthographic projection of the wire harness mounting structure 13 on the bottom wall 111 is located inside the orthographic projection of the operation opening 12 on the bottom wall 111, that is, the operation opening 12 is directly opposite the wire harness mounting structure 13, thereby providing a larger operating space for tools, allowing operators to more conveniently use tools to tighten or loosen the wire harness connection structure, such as the aforementioned fixing bolts, to achieve the fixing or removal of the high-voltage wire harness. In other words, the operation opening 12 in the embodiments of the present application provides a convenient and easy-to-operate operating space for the removal of the high-voltage wire harness.

[0056] Furthermore, the large-area operation opening has better adaptability, allowing operators to use tools of different sizes or types to install and remove the wiring harness installation structure 13, and there is more room for movement during operation, making operation more convenient.

[0057] In addition, in order to more accurately and conveniently load and unload the high-voltage wire harness, in some embodiments, the center of the operating opening 12 is located on the center line of the surface of the operating surface of the wire harness mounting structure 13 that is used to connect with the tool and realize loading and unloading. In other words, the wire harness mounting structure 13 can be located directly below the operating opening 12, so that the tool can directly access the wire harness mounting structure 13 vertically without the need for additional rotation or tilting, which simplifies the operation process of the operator or the machine and reduces the difficulty of operation; and, operating directly above the wire harness connection structure 13 reduces the error caused by the misalignment of the tool and the axis of the wire harness mounting structure 13. In particular, when the wire harness mounting structure 13 is a fixing bolt, when the axis of the tool coincides with the axis of the bolt, the controllability of the tool when tightening or loosening the fixing bolt can be improved, reducing problems such as poor fixing effect caused by inaccurate operation.

[0058] In some embodiments of the present application, as shown in Figures 5 and 6, the sealing assembly 2 may include a connector 21, which is provided with a mounting groove 211, and the opening direction of the mounting groove 211 is toward the bottom wall 111; the shell 1 includes a protrusion 14, which is connected to the side of the top wall 112 away from the bottom wall 111 and is arranged around the operating opening 12, and the protrusion 14 is located in the mounting groove 211 and is sealed and connected to the mounting groove 211.

[0059] Exemplarily, the raised portion 14 is an annular protrusion protruding from the outer surface of the housing 1 and having a certain height, and the operating opening 12 is located on the inner side of the annular protrusion. It should be noted that insulating materials in high-voltage wiring harnesses, such as insulation sheaths and insulating sleeves, may be damaged or degraded if exposed to a humid environment or by external factors such as dust. In addition, a humid environment may cause water to appear in the high-voltage wiring harness. Water is an electrical conductor and may cause a decrease in insulation performance or even cause a short circuit or leakage.

[0060] Therefore, in the housing of the powertrain provided in the embodiment of the present application, a protrusion 14 is provided on the housing 1 and a mounting groove 211 is provided on the connecting member 21, and the two cooperate with each other, that is, when the protrusion 14 is assembled in the groove 2141, since the protrusion 14 has a certain height on the outer surface of the housing 1, it can prevent liquid, gas or other media in the external environment from entering the operating opening 12 through the outer surface of the housing 1, thereby achieving a better sealing effect, so as to avoid the influence of gas, liquid, etc. on the insulation performance of the high-voltage wire harness.

[0061] Furthermore, during the installation process, the design of the protrusion 14 and the installation groove 211 enables the connector 21 to be automatically centered, thereby making the assembly and disassembly process of the connector 21 relatively simple and ensuring a better sealing effect during assembly.

[0062] Optionally, the connecting member 21 is a screw plug, and an internal thread is processed on the side wall of the housing 1 for surrounding the operation opening 12, and the connecting member 21 is threadedly connected to the operation opening 12. Accordingly, the shape of the protrusion 14 is annular.

[0063] In some embodiments of the present application, as shown in Figures 5 and 6, the connecting member 21 may include a main body portion 212, a lap portion 213 and an extension portion 214 connected in sequence; the main body portion 212 is located on the inner side of the protrusion 14 and extends into the operating opening 12, and the main body portion 212 is detachably connected to the top wall 112; the lap portion 213 is connected to an end of the main body portion 212 away from the bottom wall 111, and overlaps an end of the protrusion 14 away from the top wall 112; the extension portion 214 is connected to an end of the lap portion 213 away from the main body portion 212, and extends toward the bottom wall 111, and there is a gap between the extension portion 214 and the main body portion 212, and the main body portion 212, the lap portion 213 and the extension portion 214 cooperate to form a mounting groove 211.

[0064] In the housing of the powertrain provided in the embodiment of the present application, the extension direction of the extension portion 214 is parallel to the axial direction of the main body portion 212, and the extension portion 214 is spaced apart from the outer wall of the main body portion 212. The main body portion 212, the overlapping portion 213 and the extension portion 214 cooperate with each other to form a mounting groove 211 with a U-shaped cross-section. The mounting groove 211 is used to cooperate with the protrusion 14 to achieve sealing of the operating opening 12.

[0065] During the installation process, based on the design of the protrusion 14 and the installation groove 211, the connector 21 can be automatically centered, making the assembly and disassembly process relatively simple.

[0066] Optionally, a second sealing member (not shown) is provided between the overlapping portion 213 and the raised portion 14, and / or between the extension portion 214 and the raised portion 14. The second sealing member is used to further improve the sealing effect between the connecting member 21 and the raised portion 14, thereby better isolating the external environment from the accommodating cavity 11.

[0067] The specific type of the second sealing member can be selected according to actual needs. For example, a sealing ring or gasket made of silicone or rubber can be used. Alternatively, a raw tape or a sealing gel that always remains in a paste state in use can be used.

[0068] It should be noted that, for ease of understanding, the present application describes the connector 21 as being divided into three parts: the main body 212, the overlapping portion 213, and the extension portion 214. In reality, the connector 21 having the main body 212, the overlapping portion 213, and the extension portion 214 may be an integrated structure.

[0069] The connector 21 in the above-described embodiment achieves a preliminary seal on the operating opening 12 through the cooperation of the mounting groove 211 and the raised portion 14. To improve the sealing performance of the sealing assembly 2, in some embodiments of the present application, as shown in FIG3 , a groove 2141 may be provided on the surface of the extension portion 214 facing the main body portion 212; the sealing assembly 2 may further include a first sealing member 22, which is accommodated in the groove 2141 and abuts against the groove bottom wall 111 of the groove 2141 and the outer wall of the raised portion 14, respectively, with the groove bottom wall 111 facing the outer wall of the raised portion 14.

[0070] By arranging a first seal 22 in the groove 2141, when the connector 21 cooperates with the protrusion 14, the first seal 22 will clamp on the outer wall of the protrusion 14 to form an additional seal. Therefore, the connector 21 and the first seal 22 respectively cooperate with the protrusion 14 to achieve double sealing of the operating opening 12, enhance the overall sealing performance of the sealing assembly 2, and further prevent liquid, gas or other media from entering the operating opening 12 and the interior of the accommodating cavity 11, thereby ensuring the insulation performance of the high-voltage wire harness.

[0071] In some embodiments, the first sealing member 22 can be a sealing ring, and the width of the groove 2141 is not greater than the outer diameter of the sealing ring, so that the sealing ring can be limited in the groove 2141 by its own elastic force and will not fall easily due to external force, making it easier for the operator to assemble the sealing assembly 2 and the protrusion 14.

[0072] Exemplarily, the installation order of the connector 21, the first seal 22 and the shell 1 is as follows: first, insert the first seal 22 into the groove 2141 on the connector 21. At this time, the first seal 22 will be limited in the groove 2141 based on its own elasticity and will not fall easily; then, the connector 21 with the first seal 22 installed is assembled onto the protrusion 14, wherein the main body 212 of the connector 21 extends into the operating opening 12, the protrusion 14 is inserted into the installation groove 211 of the connector 21, and the first seal 22 is clamped on the outer wall of the protrusion 14, and the two sides of the first seal 22 are elastically abutted against the protrusion 14 and the bottom wall 111 of the groove 2141, as shown in Figure 3; finally, rotate the connector 21 so that it is connected to the shell 1 through the external thread on the main body 212, thereby completing the assembly between the sealing assembly 2 and the shell 1.

[0073] In some embodiments, the groove 2141 can be located on the surface of the extension portion 214 near the main body portion 212, and in the middle region of the extension portion 214. This structure requires machining the groove 2141 directly on the surface of the extension portion 214 near the main body portion 212, and the machining equipment needs to extend into the mounting groove 211 to machine the extension portion 214. This not only increases the machining difficulty but also places high demands on the machining equipment.

[0074] It should be noted that the above-mentioned middle area refers to an area on the extension portion that is spaced apart from the outer edge of the extension portion.

[0075] Therefore, in order to reduce the processing difficulty, in some embodiments of the present application, the groove 2141 extends to the edge of the extension portion 214 away from the overlapping portion 213, so that the side of the groove 2141 away from the overlapping portion 213 is open; the sealing assembly 2 also includes a sealing member 23, which is clamped with the connecting member 21, and at least a portion of the sealing member 23 is located on the side of the extension portion 214 close to the bottom wall 111 to close the side of the groove 2141 away from the overlapping portion 213.

[0076] It is easy to understand that the groove 2141 itself has an opening on one side, which opens toward the main body 212. After the side of the groove 2141 away from the overlapping portion 213 (which can be called the first side) extends to the edge of the extension portion 214 away from the overlapping portion 213, the first side of the groove 2141 actually forms another opening, which opens toward the bottom wall 111 of the accommodating cavity 11. In other words, as shown in Figure 3, the groove 2141 now has an opening on each of its two adjacent sides.

[0077] As shown in Figure 7, by leaving the first side of the groove 2141 open, and then using another connecting member 21 to cooperate with the blocking member 23, the first sealing member 22 is limited in position. Compared to the aforementioned method of machining a groove in the middle area of ​​the extension 214, this groove arrangement method actually forms a stepped structure at the end of the extension 214 near the bottom wall 111 through milling or other processing methods. This makes it more convenient to manufacture and can meet the needs of large-scale production. Afterwards, simply connect the blocking member 23 to the first side of the stepped structure so that it can block the first side, thereby limiting the position of the first sealing member 22.

[0078] Exemplarily, the installation order of the connecting member 21, the first sealing member 22, the sealing member 23 and the shell 1 is: first connect the connecting member 21 with the sealing member 23, form a groove for accommodating the first sealing member 22 on the inner side of the extension, and then insert the first sealing member 22 into the groove 2141 of the connecting member 21. At this time, the first sealing member 22 will be limited in the groove 2141 due to its own elasticity and will not fall easily; then assemble the connecting member 21 with the first sealing member 22 installed onto the raised portion 14.

[0079] The main body 212 of the connecting member 21 extends into the operating opening 12, the protrusion 14 is inserted into the mounting groove 211 of the connecting member 21, and the first sealing member 22 is clamped on the outer wall of the protrusion 14. The two sides of the first sealing member 22 are elastically abutted against the protrusion 14 and the bottom wall 111 of the groove 2141, as shown in Figure 3; finally, the connecting member 21 is rotated so that it is connected to the housing 1 through the external thread on the main body 212, thereby completing the assembly between the sealing component 2 and the housing 1.

[0080] In the embodiment of the present application, the blocking member 23 can be connected to the connecting member 21 in any manner, such as snap connection, screw connection, interference fit, etc.

[0081] In some embodiments of the present application, as shown in Figures 8, 9, and 10, a plurality of snap-fit ​​structures 2142 are formed on the surface of the extension portion 214 away from the main body portion 212, and the plurality of snap-fit ​​structures 2142 are arranged at intervals; the sealing member 23 includes a connecting ring 231 and a plurality of connecting hooks 232, and the plurality of connecting hooks 232 are connected to the connecting ring 231 and are distributed at intervals along the circumferential direction of the connecting ring 231, and the plurality of connecting hooks 232 are respectively used to snap into contact with the corresponding snap-fit ​​structures 2142.

[0082] To adapt to the shape of the connector 21 , the sealing member 23 includes a connecting ring 231 , which is used to surround and fit on the outside of the extension portion to meet the connection requirements with the connector 21 and the sealing requirements for the first side of the groove 2141 .

[0083] In one possible design, as shown in Figures 8 and 9 , the axial length of the connecting ring 231 is shorter than its radial length, where the radial length is the distance between the outer sidewall 2311 and the inner sidewall 2312 of the connecting ring 231. The connecting ring 231 is used to seal the open first side of the groove 2141. A plurality of connecting hooks 232 are perpendicularly connected to the outer sidewall 2311 of the connecting ring 231 and are configured to engage with the plurality of engaging structures 2142 on the extension 214.

[0084] In another possible design, the axial length of the connecting ring 231 is greater than its radial length. The connecting ring 231 has an upper wall and a lower wall that are axially opposed. A plurality of connecting hooks 232 are connected to the upper wall of the connecting ring 231 and are configured to engage with the plurality of engaging structures 2142 on the extension 214. The sealing member 23 also includes a retaining ring connected to the lower wall of the connecting ring 231 and extending inwardly of the connecting ring 231 to seal the open first side of the groove 2141.

[0085] In the electric drive housing provided in the embodiment of the present application, the connector 21 and the sealing member 23 are detachably connected via a snap-fit ​​structure 2142 and a connecting hook 232. This not only limits the position of the first sealing member 22 in the groove 2141, but also improves the water and dust isolation effect because the sealing member 23 contacts the outer wall of the raised portion 14 after the sealing assembly 2 is assembled with the housing 1, thereby facilitating the sealing of the operating opening 12 by the sealing assembly 2, while also reducing aging of the first sealing member 22. The snap-fit ​​connection method allows for a relatively easy and quick assembly process, saving time and production costs. Furthermore, the snap-fit ​​structure 2142 allows for relatively easy disassembly of the two components, making maintenance, repair, or component replacement more convenient without the need for complex tools or tedious operations.

[0086] Optionally, the clamping structure 2142 may be a clamping block, a clamping slot, or a clamping hook. Those skilled in the art may select and adjust the type of the clamping structure according to actual needs.

[0087] Because the first seal 22 needs to abut against both the protrusion 14 and the inner wall of the groove 2141 to achieve a sealing effect, the inner diameter of the first seal 22 is equal to or slightly smaller than the outer diameter of the protrusion 14. During the installation process, on the one hand, the first seal 22 is not easy to accurately fit over the protrusion, and on the other hand, the first seal 22 moves downward along the outer wall of the protrusion 14 under the drive of the connector 21. Before the connector 21 is fully installed, the first seal 22 and the outer wall of the protrusion 14 are constantly in relative motion, creating a constant squeezing and frictional force between them, which can make the assembly process less smooth.

[0088] In order to enable the sealing assembly 2 to be assembled with the protrusion 14 more smoothly, in some embodiments of the present application, the outer wall of the protrusion 14 is formed with a slope 141 on the side away from the bottom wall 111, and the slope 141 is inclined in such a way that the further away from the bottom wall 111, the closer it is to the inner wall of the protrusion 14, and the inner wall of the protrusion 14 is opposite to the outer wall.

[0089] For example, as shown in Figures 5 and 6, a bevel 141 is further provided on the raised portion 14. Bevel 141 makes it easier for the first seal 22 to be fitted onto the raised portion 14. Furthermore, because the outer diameter of the raised portion 14 gradually increases at bevel 141, frictional resistance during installation is reduced, thereby guiding the first seal 22 for smoother assembly and positioning, thereby improving sealing efficiency. Furthermore, the design of bevel 141 reduces the need for lubricant. By reducing frictional resistance during assembly, bevel 141 can reduce the amount of lubricant used or even enable assembly without lubricant.

[0090] Alternatively, those skilled in the art may select and adjust the number of the operation openings 12 , the wire harness mounting structures 13 , and the sealing assemblies 2 according to the number of high-voltage wire harnesses that need to be assembled.

[0091] In some examples, there are two high-voltage wire harnesses in the electric drive assembly. Correspondingly, two wire harness mounting structures 13 are provided on the bottom wall 111 of the accommodating chamber 11, and two operating openings 12 are provided on the top wall 112 of the accommodating chamber 11. There are also two sealing assemblies 2, which are respectively assembled in the two operating openings 12. When any high-voltage wire harness needs to be loaded or unloaded, it is only necessary to remove the sealing assembly 2 corresponding to the high-voltage wire harness. The operator inserts the tool into the corresponding operating opening 12 on the top wall 112 of the accommodating chamber 11 to load and unload the wire harness mounting structure 13 on the high-voltage wire harness, thereby achieving the fixing or removal of the high-voltage wire harness, simplifying the assembly process. In this example, since the high-voltage wire harness and the sealing assembly 2 are one-to-one corresponding, the corresponding high-voltage wire harness can be determined by distinguishing the sealing assembly 2, so it is not easy to make wiring or disconnecting errors.

[0092] In other examples, the number of high-voltage wire harnesses in the electric drive assembly is two. Correspondingly, two wire harness mounting structures 13 are provided on the bottom wall 111 of the accommodating cavity 11. The top wall 112 of the accommodating cavity 11 may also have only one operating opening 12 with a larger area. The two wire harness mounting structures 13 are located within the orthographic projection of this operating opening 12 on the bottom wall 111. There is also one sealing assembly 2, which is assembled in this operating opening 12. In this example, since there is only one operating opening 12, the processing workload of the operating opening 12 is reduced, as well as the assembly workload when assembling two high-voltage wire harnesses simultaneously.

[0093] As shown in Figures 1 and 2, in some embodiments, a through hole 15 may be formed on the side wall of the housing 1. One end of the high-voltage wiring harness passes through the through hole 15 into the accommodating cavity 11 and is connected to the EMC component in the accommodating cavity 11. Those skilled in the art can select and adjust the number and size of the through holes 15 based on the number of high-voltage wiring harnesses to be assembled.

[0094] The present application also provides a powertrain, including the above-mentioned powertrain housing. The powertrain may be, for example, a hybrid powertrain or an electric drivetrain.

[0095] An embodiment of the present application also provides a vehicle, comprising the housing of the above-mentioned powertrain, or comprising the above-mentioned powertrain.

[0096] In the vehicle provided in the embodiment of the present application, a housing 1 is formed with a housing 1 for accommodating an EMC component, and a wiring harness mounting structure 13 is provided on the bottom wall 111 of the housing 11. The high-voltage wiring harness is connected to the EMC component and fixed in the housing 11 through the wiring harness mounting structure 13. An operating opening 12 is also provided on the top wall 112 of the housing 1, which can be sealed or opened by a sealing assembly 2. When the wiring harness needs to be loaded and unloaded, it is only necessary to remove the sealing assembly 2, operate the wiring harness mounting structure 13 through the operating opening 12 on the top wall 112 of the housing 11 to fix or remove the high-voltage wiring harness, and then reinstall the sealing assembly 2 to complete the overall loading and unloading process. Compared with the split electric drive housing in the related art, the electric drive housing provided in the embodiment of the present application simplifies the assembly steps, reduces the number of connecting parts, and has a simple and reliable sealing method.

[0097] In some embodiments, the vehicle provided in the embodiments of the present application includes an electric drive assembly, which includes the above-mentioned housing.

[0098] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0099] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0100] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0101] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0103] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and purpose of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A housing of a powertrain, comprising a housing body (1) and a sealing assembly (2); An accommodation cavity (11) is formed inside the housing body (1). The accommodation cavity (11) has a top wall (112) and a bottom wall (111) arranged opposite to each other. An operation opening (12) is provided on the top wall (112). The bottom wall (111) has a wiring harness mounting structure (13), and the wiring harness mounting structure (13) is used to fix the high-voltage wiring harness in the powertrain; The sealing assembly (2) is detachably connected to the operation opening (12), and the sealing assembly (2) is used to seal or open the accommodation cavity (11).

2. The housing of the powertrain according to claim 1, wherein the opening area of the operation opening (12) is smaller than the area of the top wall (112) of the accommodation cavity (11).

3. The housing of the powertrain according to claim 1, wherein the orthographic projection of the wiring harness mounting structure (13) on the bottom wall (111) is located inside the orthographic projection of the operation opening (12) on the bottom wall (111).

4. The housing of the powertrain according to claim 1, wherein the center of the operation opening (12) is located on the center line of a specified surface, and the specified surface is the surface of the operation surface of the wiring harness mounting structure (13) for connecting with a tool to achieve loading and unloading.

5. The housing of the powertrain according to claim 1, wherein the sealing assembly (2) includes a connecting member (21), and an installation groove (211) is provided on the connecting member (21), and the opening of the installation groove (211) faces the bottom wall (111); The housing body (1) includes a convex portion (14). The convex portion (14) is connected to the side of the top wall (112) away from the bottom wall (111) and surrounds the operation opening (12). The convex portion (14) is located in the installation groove (211) and is hermetically connected to the installation groove (211).

6. The housing of the powertrain according to claim 5, wherein the connecting member (21) includes a body portion (212), a lapping portion (213), and an extension portion (214) connected in sequence; The body portion (212) is located inside the convex portion (14) and extends into the operation opening (12) and is detachably connected to the top wall (112); The lapping portion (213) is connected to one end of the body portion (212) away from the bottom wall (111) and laps on one end of the convex portion (14) away from the top wall (112); The extension portion (214) is connected to one end of the lapping portion (213) away from the body portion (212) and extends in a direction close to the bottom wall (111). There is a gap between the extension portion (214) and the body portion (212). The body portion (212), the lapping portion (213), and the extension portion (214) cooperate to enclose the installation groove (211).

7. The housing of the powertrain according to claim 6, wherein a groove (2141) is provided on the surface of the outer extension portion (214) facing the main body portion (212); The sealing assembly (2) includes a first seal (22), the first seal (22) is received in the groove (2141), and is respectively in contact with the bottom wall (111) of the groove (2141) and the outer wall of the protruding portion (14), and the bottom wall (111) is opposite to the outer wall of the protruding portion (14).

8. The housing of the powertrain according to claim 7, wherein the first seal (22) is a sealing ring, and the width of the groove (2141) is less than or equal to the outer diameter of the sealing ring.

9. The housing of the powertrain according to claim 7, wherein the groove (2141) is located on the surface of the outer extension portion (214) close to the main body portion (212), and is located in the middle area of the outer extension portion (214).

10. The housing of the powertrain according to claim 7, wherein the groove (2141) extends to the edge of the outer extension portion (214) away from the overlapping portion (213), so that one side of the groove (2141) away from the overlapping portion (213) is open; The sealing assembly (2) further includes a plugging member (23), the plugging member (23) is snap-connected to the connecting member (21), and at least a part of the plugging member (23) is located on one side of the outer extension portion (214) close to the bottom wall (111) to close the side of the groove (2141) away from the overlapping portion (213).

11. The housing of the powertrain according to claim 10, wherein a plurality of snap-fit structures (2142) are formed on the surface of the outer extension portion (214) away from the main body portion (212), and the plurality of snap-fit structures (2142) are arranged at intervals; The plugging member (23) includes a connecting ring (231) and a plurality of connecting hooks (232), the plurality of connecting hooks (232) are connected to the connecting ring (231) and are distributed at intervals along the circumferential direction of the connecting ring (231), and the plurality of connecting hooks (232) are respectively used for snap-fitting with corresponding snap-fit structures (2142).

12. The housing of the powertrain according to claim 11, wherein the axial length of the connecting ring (231) is less than the radial length of the connecting ring (231), the connecting ring (231) is used to plug the side of the groove (2141) away from the overlapping portion (213), and the plurality of connecting hooks (232) are perpendicularly connected to the outer side wall (2311) of the connecting ring (231), and the radial length is the distance between the outer side wall (2311) and the inner side wall (2312) of the connecting ring (231).

13. The housing of the powertrain according to claim 5, wherein a slope (141) is formed on an outer wall of the convex portion (14) on a side away from the bottom wall (111), and the slope (141) is inclined in such a manner that the farther away from the bottom wall (111), the closer to an inner wall of the convex portion (14), and the inner wall of the convex portion (14) is opposite to the outer wall.

14. A powertrain, characterized in that, The powertrain includes the housing of the powertrain according to any one of claims 1 to 13.

15. A vehicle, wherein the vehicle includes the housing of the powertrain according to any one of claims 1 to 13, or the vehicle includes the powertrain according to claim 14.

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