Hanging sleeve, battery box assembly and vehicle

Abstract

The utility model provides a mount sleeve, battery box assembly and vehicle relates to machining technical field, mount sleeve includes sleeve structure, sleeve structure includes sleeve body and flange, sleeve body and flange are integrated. The sleeve body and the flange plate are integrally formed into the sleeve structure, split laser welding is not needed, the sealing performance between the sleeve body and the flange plate is guaranteed, the quality of the hung sleeve is better, and meanwhile the reduction of the laser welding procedure is more beneficial to the reduction of the machining cost.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, and in particular to a mounting sleeve, a battery box assembly and a vehicle. Background Art

[0002] With the popularity of electric vehicles, the production capacity of battery boxes required for electric vehicles is also increasing. A mounting sleeve is often set in the battery box as a connection carrier between the battery box and the vehicle body. The mounting sleeve plays a vital role in carrying the battery box and achieving a sealed connection of the battery box. The mounting sleeve often includes a sleeve part and a flange part, wherein the diameter of the flange surface of the flange part is much larger than the diameter of the sleeve part, and because the sleeve part needs to penetrate the entire battery box when installed to the battery box, the length of the sleeve part required is also much larger than the length of the flange part. Therefore, in order to make the mounting sleeve easier to process, the current method of making the mounting sleeve is generally to form the sleeve part and the flange part separately, and then laser weld the two to form a mounting sleeve. However, since the sleeve part and the flange part are welded, such a manufacturing method will result in poor connection reliability between the sleeve part and the flange part, resulting in a risk of sealing failure between the sleeve part and the flange part, thereby affecting the quality of the mounting sleeve. Utility Model Content

[0003] The utility model aims to solve the problem that the sealing performance between the sleeve part and the flange part of the current mounting sleeve is poor, thereby affecting the quality of the mounting sleeve.

[0004] In order to solve the above problems, in a first aspect, the utility model provides a mounting sleeve, including a sleeve structure, wherein the sleeve structure includes a sleeve body and a flange, and the sleeve body and the flange are integrally formed.

[0005] Compared with the prior art, the sleeve body and the flange are integrally formed into a sleeve structure in the utility model, and there is no need for separate laser welding, thereby ensuring the sealing between the sleeve body and the flange, and the quality of the mounting sleeve is better. At the same time, the reduction of laser welding processes is also more conducive to reducing processing costs.

[0006] Optionally, the mounting sleeve further comprises a sleeve nut, the outer wall of the sleeve body is provided with an external thread, and the sleeve nut is sleeved outside the sleeve body and threadedly connected with the external thread.

[0007] Optionally, the inner wall of the sleeve body is provided with a hexagonal hole, and the hexagonal hole is used for inserting an auxiliary tool to assist the sleeve nut to be fastened to the sleeve body.

[0008] Optionally, the sleeve body and the flange are integrally formed by a cold heading process, a hot forging process or a spinning process.

[0009] Optionally, the mounting sleeve further includes a fastening bolt and a fastening nut, the flange includes a second platform and a first platform, the second platform is a cylindrical structure, the diameter of the cylindrical structure is greater than the diameter of the sleeve body, one end of the cylindrical structure is connected to one end of the sleeve body, and the other end of the cylindrical structure is folded outward and extended to form the first platform;

[0010] The head end of the fastening bolt is located in the second platform, and the screw portion of the fastening bolt passes through the sleeve body and is fixed by the fastening nut.

[0011] Optionally, an outer edge of the first platform is provided with an annular groove portion coaxially arranged with the second platform, and a sealant structure is provided in the annular groove portion.

[0012] Optionally, the thickness of the sealant structure along the axial direction of the first platform is in a range of 0.8 mm to 1.2 mm; and the radial dimension of the annular groove portion is 0.10 to 0.15 times the diameter of the first platform.

[0013] Optionally, when the inner wall of the sleeve body is provided with a hexagonal hole, the height of the hexagonal hole ranges from 5.5 mm to 6.5 mm; and the height of the second platform ranges from 15 mm to 18 mm.

[0014] Optionally, the inner cavity and / or outer surface of the sleeve structure is provided with an electroplating layer.

[0015] In the second aspect, the utility model also provides a battery box assembly, including a battery box and the mounting sleeve as described above, and also including a battery pack. The battery box includes a box body and an intermediate crossbeam. The intermediate crossbeam is arranged in the box body to divide the box body into at least two cavities. The battery pack is installed in the cavity.

[0016] Therefore, since the battery box assembly includes the mounting sleeve, the battery box assembly at least has all the effects of the mounting sleeve, which will not be elaborated here.

[0017] Optionally, a plurality of grooves are spaced apart on one side of the middle cross beam away from the bottom plate of the box body, and the sleeve structure of the mounting sleeve is sequentially inserted into the grooves of the bottom plate and the middle cross beam, and the sleeve nut of the mounting sleeve is in the groove and abuts against the middle cross beam.

[0018] Optionally, the battery box also includes a water cooling plate, which is arranged inside the box body and is in contact with and connected to the bottom wall of the battery pack; the mounting sleeve sequentially passes through the bottom plate of the box body, the water cooling plate and the middle cross beam.

[0019] In a third aspect, the utility model further provides a vehicle, comprising the battery box assembly as described above, and also comprising a chassis, wherein the battery box assembly is mounted on the chassis.

[0020] Therefore, the vehicle includes a battery box assembly, so the vehicle at least has all the technical effects of the battery box assembly, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an existing mounting sleeve;

[0022] Figure 2 This is one of the schematic diagrams of the sleeve structure of the mounting sleeve in the embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the vertical cross-sectional structure of the battery box assembly in the embodiment of the utility model;

[0024] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at A in the middle

[0025] Figure 5 This is a schematic diagram of the structure of the battery box assembly in the embodiment of the utility model;

[0026] Figure 6 for Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0027] Figure 7 This is the second structural diagram of the mounting sleeve in the embodiment of the utility model;

[0028] Figure 8 This is the third structural schematic diagram of the mounting sleeve in the embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 11-sleeve body, 111-external thread; 12-flange, 13-welding connection surface, 233-hexagonal hole, 24-first platform, 241-annular groove portion; 25-second platform, 5-sleeve nut, 6-box, 61-bottom plate, 7-middle beam, 71-groove, 8-water cooling plate. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] It should be noted that, in the coordinate system XYZ provided in this article, the positive direction of the X axis represents the right, the negative direction of the X axis represents the left, the positive direction of the Y axis represents the front, the negative direction of the Y axis represents the back, the positive direction of the Z axis represents the top, and the negative direction of the Z axis represents the bottom.

[0033] In order to facilitate the understanding of the present invention, the background technology is first described in further detail. Figure 1 At present, the mounting sleeve includes a sleeve body 11 and a flange 12 connected in sequence along its axial direction. The length of the sleeve body 11 is much greater than the length of the flange 12, and the diameter of the flange surface of the flange 12 is much greater than the diameter of the sleeve body 11. If you want to process the mounting sleeve in one piece, it is difficult and the processing yield is low. Therefore, the traditional manufacturing method is generally: the sleeve body 11 and the flange 12 are processed separately, and then the sleeve body 11 and the flange 12 are welded and spliced ​​together to finally obtain the mounting sleeve. Therefore, there is a welding connection surface 13 between the sleeve body 11 and the flange 12, and the problem of sealing failure is prone to occur at this position, resulting in low quality of the mounting sleeve.

[0034] In view of this, if Figure 2 As shown, an embodiment of the utility model provides a mounting sleeve, including a sleeve structure, wherein the sleeve structure includes a sleeve body 11 and a flange 12, and the sleeve body 11 and the flange 12 are integrally formed.

[0035] It should be noted that the mounting sleeve can be applied to different scenarios, such as the suspension system, transmission system, connection with the vehicle's exhaust pipe, and installation and fixation of the vehicle's battery box. The following takes the mounting sleeve to install the battery box on the chassis of the vehicle as an example:

[0036] The sleeve body 11 in the above-mentioned prior art can be used as the sleeve body 11 in the present application, and the sleeve body 11 and the flange 12 can be distributed along the axial direction of the sleeve structure and formed as one piece, and the sleeve body 11 is used to vertically penetrate into the battery box, and part of the flange 12 is located on the outside of the bottom plate 61 of the battery box and is connected to the bottom plate 61 of the battery box, so that the battery box can be supported from below, wherein the end of the sleeve body 11 away from the flange 12 can be directly or indirectly connected to the chassis of the vehicle, so that the battery box can be suspended and installed on the chassis of the vehicle through the sleeve structure.

[0037] In this embodiment, the sleeve body 11 and the flange 12 are integrally formed into a sleeve structure, thereby ensuring the connection reliability between the sleeve body 11 and the flange 12, and correspondingly improving the sealing between the sleeve body 11 and the flange 12 in the mounting sleeve, so as to improve the quality of the mounting sleeve. In addition, the sleeve body 11 and the flange 12 in the sleeve structure are integrally formed, which can also reduce the processing technology and correspondingly reduce the processing cost.

[0038] When the mounting sleeve is connected to the battery box, the battery box is installed on the chassis of the vehicle, the sleeve body 11 in the mounting sleeve is passed through the battery box to connect to the chassis, and the flange 12 is located below the battery box and connected to the bottom plate of the battery box, so that the flange 12 of the mounting sleeve supports the battery box from below, so as to install the battery box on the chassis and prevent the battery box from sinking, so as to ensure the load-bearing effect of the battery box.

[0039] In one embodiment of the present invention, Figure 2 and Figure 3 As shown, the mounting sleeve further includes a sleeve nut 5 , the outer wall of the sleeve body 11 is provided with an external thread 111 , and the sleeve nut 5 is sleeved outside the sleeve body 11 and threadedly connected with the external thread 111 .

[0040] It should be noted that the sleeve body 11 is used to penetrate the middle crossbeam 7 of the battery box, and the sleeve nut 5 is used to abut against the middle crossbeam 7 of the battery box;

[0041] When the sleeve body 11 is inserted into the middle cross beam 7 of the battery box, the sleeve nut 5 is sleeved on the outside of the sleeve body 11 and is threadedly connected with the external thread 111. After the sleeve nut 5 is threadedly connected with the external thread 111, the bottom end of the sleeve nut 5 abuts against the middle cross beam 7 of the battery box, so that the entire sleeve structure can be fixed on the middle cross beam 7 through the cooperation between the sleeve nut 5 and the external thread 111; wherein, the sleeve body 11 of the sleeve structure is connected to the middle cross beam 7 of the battery box through the sleeve nut 5, and the flange 12 is connected to the bottom plate 61 of the battery box, and the sleeve body 11 can be connected to the chassis of the vehicle, so that the sleeve structure and the sleeve nut 5 cooperate to fix the battery box on the chassis of the vehicle to prevent the battery box from detaching from the chassis.

[0042] Among them, the height of the external thread 111 is greater than the height of the sleeve nut 5, so that the height position of the sleeve nut 5 on the sleeve body 11 can be rotated until the bottom end of the sleeve nut 5 abuts against the middle cross beam 7, which not only can realize the fixed connection between the sleeve structure and the middle cross beam 7, but also can be suitable for middle cross beams 7 of different heights.

[0043] Among them, the sleeve body 11 or the sleeve nut 5 is Figure 2 The dimension in the Z-axis direction of the central coordinate system is the height of the sleeve body 11 or the sleeve nut 5 .

[0044] In one embodiment of the present invention, Figure 3 and Figure 4 As shown, the inner wall of the sleeve body 11 is provided with a hexagonal hole 233 , and the hexagonal hole 233 is used for inserting an auxiliary tool to assist the sleeve nut 5 to be fastened to the sleeve body 11 .

[0045] It should be noted that when the sleeve nut 5 is sleeved on the outside of the sleeve body 11 and in the process of rotating for tightening, the entire sleeve structure may rotate with the sleeve nut 5, thereby affecting the assembly operation of the sleeve structure and the intermediate crossbeam 7; therefore, by setting a hexagonal hole 233 on the inner wall of the sleeve body 11, such as the inner wall of the bottom end, when the sleeve nut 5 is tightened on the outside of the sleeve body 11, an auxiliary tool, such as a screw with a polygonal structure at the end, can be used to insert the flange 12 from below until it is embedded in the hexagonal hole 233. At this time, the sleeve nut 5 is rotated by other tools to rotate the sleeve nut 5 relative to the external thread 111 until the bottom end of the sleeve nut 5 abuts against the intermediate crossbeam 7. During the entire rotation process of the sleeve nut 5, since the sleeve body 11 of the sleeve structure is locked by the auxiliary tool, the sleeve structure can be effectively prevented from rotating together with the sleeve nut 5, thereby improving the assembly efficiency of the sleeve structure and the intermediate crossbeam 7.

[0046] The hexagonal hole 233 matches the shape and inner diameter of the auxiliary tool. If the hexagonal hole 233 is a regular polygonal groove, such as a regular hexagonal groove, the auxiliary tool may be a hexagonal head bolt.

[0047] In addition, the above-mentioned hexagonal hole 233 can also be a hole of other shapes, such as a square hole, a bar hole, etc. As long as it is convenient for other tools to be inserted, various holes to assist the sleeve nut 5 to rotate relative to the sleeve body 11 are suitable for the present technical solution and are not specifically limited here.

[0048] In an embodiment of the present invention, the sleeve body 11 and the flange 12 are integrally formed by a cold heading process, a hot forging process or a spinning process.

[0049] It should be noted that the initial bar material (steel material or aluminum material) can be cold-forging treated and punched at least once by a cold-forging machine, and finally the workpiece after the punching die is fine-processed by a CNC lathe to form a sleeve structure in which the sleeve body 11 and the flange 12 are integrally formed, thereby not only improving the sealing between the sleeve body 11 and the flange 12, but also ensuring the mechanical strength and rigidity of the sleeve structure. Among them, the cold-forging process is a prior art and will not be described in detail here.

[0050] The sleeve body 11 and the flange 12 may also be integrally formed by a hot forging process or a spinning process. Since the hot forging process or the spinning process is a prior art, they will not be described in detail here.

[0051] In one embodiment of the present invention, Figures 2 to 4As shown, the mounting sleeve also includes a fastening bolt and a fastening nut, the flange 12 includes a second platform 25 and a first platform 24, the second platform 25 is a cylindrical structure, the diameter of the cylindrical structure is greater than the diameter of the sleeve body 11, one end of the cylindrical structure is connected to the bottom end of the sleeve body 11, and the other end of the cylindrical structure is folded outward to form the first platform 24;

[0052] The head end of the fastening bolt is located in the second platform 25 , and the screw portion of the fastening bolt passes through the sleeve body 11 and is fixed by the fastening nut.

[0053] It should be noted that, taking the mounting sleeve to install the battery box on the chassis of the vehicle as an example, the first platform 24 is located outside the bottom plate 61 of the battery box and is connected to the bottom plate 61 of the battery box;

[0054] Specifically, the first platform 24 is disposed below the battery box and connected to the bottom plate 61 of the battery box. The first platform 24, which is equivalent to a sleeve structure, supports the entire battery box from below to prevent the battery box from sinking.

[0055] The middle part of the sleeve body 11 can be fixed to the entire sleeve structure and the middle cross beam 7 of the battery box through the sleeve nut 5. In other words, the sleeve nut 5 is screwed to the external thread 111 of the sleeve body 11 to be pressed against the middle cross beam 7.

[0056] The portion where the first platform 24 is connected to the sleeve body 11 can be defined as a second platform 25. The second platform 25 has the same shape as the sleeve body 11. In other words, the second platform 25 is also a cylindrical structure, and the diameter of the second platform 25 is larger than the diameter of the sleeve body 11, so that when the sleeve structure is connected to the chassis of the vehicle, the screw portion of the fastening bolt can be passed through the first platform 24, the second platform 25, the sleeve body 11 and the chassis of the mounting sleeve from bottom to top in sequence. In other words, the mounting sleeve and the battery box are both located below the chassis, and then the fastening nut is sleeved on the uppermost end of the screw portion of the fastening bolt to achieve the connection between the fastening bolt and the chassis. At this time, the head end of the fastening nut is in the second platform 25, so that the mounting sleeve The first stage 24 of the cylinder and the fastening bolt from below, the sleeve nut 5 of the mounting sleeve from the middle area, and the fastening nut of the mounting sleeve from above steadily suspend the entire battery box on the chassis of the vehicle; and because the head end of the fastening nut is in the second stage 25, and the diameter of the cylindrical structure is larger than the diameter of the sleeve body 11, in other words, the head end of the fastening bolt limits and supports the second stage 25 of the sleeve structure from below to prevent the head end of the fastening bolt from entering the sleeve body 11; furthermore, because the head end of the fastening bolt is in the second stage 25, in other words, the head end of the fastening bolt will not exceed the bottom of the battery box, thereby reducing the damage to the fastening bolt by water or other foreign matter on the road during the driving of the vehicle.

[0057] In one embodiment of the present invention, Figure 4 As shown, an outer edge of the first platform 24 is provided with an annular groove portion 241 coaxially arranged with the second platform 25 , and a sealant structure is provided in the annular groove portion 241 .

[0058] It should be noted that when the sleeve body 11 of the sleeve structure is vertically penetrated through the bottom plate 61 and the middle cross beam 7 of the battery box, the bottom of the first platform 24 is parallel to the bottom plate 61 of the battery box and connected to the bottom plate 61, thereby increasing the contact area between the first platform 24 and the bottom plate 61 to improve the support effect of the battery box from below; and there is a vertical gap between the annular groove portion 241 and the bottom plate 61, and the vertical gap is used to apply the sealant structure, which not only increases the connection strength and connection stability between the first platform 24 and the bottom plate 61 of the battery box, but also prevents external dust and other foreign matter from entering the interior of the battery box from the connection between the first platform 24 and the bottom plate 61, so as to achieve the connection sealing between the sleeve structure and the battery box.

[0059] The annular groove portion 241 can be located at the periphery of the first platform 24 or at the middle of the first platform 24. As long as the various setting positions can meet the sealing effect between the first platform 24 and the bottom plate of the battery box, they are applicable to the present technical solution and will not be described in detail here.

[0060] Combination Figure 7 As shown, in one embodiment of the present invention, the thickness of the sealant structure along the axial direction of the first platform 24 ranges from 0.8 mm to 1.2 mm; the radial dimension of the annular groove portion 241 is 0.10 to 0.15 times the diameter of the first platform 24 .

[0061] It should be noted that the thickness of the sealant structure refers to the thickness along the axial direction of the mounting sleeve ( Figure 7 The size in the Z-axis direction, Figure 7 L1 in the figure refers to the diameter of the first platform 24 ( Figure 7 The annular groove portion 241 is a circular ring structure, and the radial dimension of the annular groove portion 241 refers to the radial dimension of the annular groove portion 241 in the X-axis direction. Figure 7 The size in the X-axis direction of the mid-coordinate system (it can also be understood as the size of the annular groove minus the inner diameter), Figure 7 L2 in the figure refers to the size of the bottom diameter of the first stage 24 minus the radial size of the annular groove portion 241 .

[0062] Specifically, since the thickness of the sealant structure ranges from 0.8 mm to 1.2 mm, the thickness of the applied sealant structure is guaranteed. If the thickness is too small, it may lead to insufficient bonding strength, and if the thickness is too large, it will cause waste.

[0063] Since the radial dimension of the annular groove portion 241 is 0.10 to 0.15 times the diameter of the first platform 24, in other words, the diameter L2 of the portion obtained by deducting the radial dimension of the annular groove portion 241 from the bottom diameter of the first platform 24 can be selected within the range of 0.85 to 0.9 times the first platform 24. If L2 is too small, the glue coating area on the annular groove portion 241 for coating the sealant structure will be too large, resulting in glue waste. If L2 is too large, the glue coating area will be insufficient, resulting in insufficient bonding strength.

[0064] Combination Figure 8 As shown, in one embodiment of the present invention, when the inner wall of the sleeve body 11 is provided with a hexagonal hole 233, the height of the hexagonal hole 233 ranges from 5.5 mm to 6.5 mm; the height of the second platform 25 ranges from 15 mm to 18 mm.

[0065] It should be noted that Figure 8 H3 in the figure refers to the axial direction of the hexagonal hole 233 in the mounting sleeve ( Figure 8 The height or depth of the coordinate system (Z axis direction), Figure 8 H2 in the figure refers to the axial direction of the second platform 25 in the mounting sleeve ( Figure 8 The height of the coordinate system in the Z-axis direction, Figure 8H4 in the figure refers to the axial direction of the sleeve body 11 in the mounting sleeve ( Figure 8 The height in the Z-axis direction of the coordinate system.

[0066] Specifically, the height range of the hexagonal hole 233 can ensure that sufficient supporting strength is provided when the sleeve nut 5 is tightened to the external thread 111 of the first preformed rod 22. If the height of the hexagonal hole 233 is too small, the strength is insufficient, which may easily cause the auxiliary tool to slip. If the height of the hexagonal hole 233 is too large, the processing time of the hexagonal hole 233 is increased.

[0067] The height range of the second platform 25 can ensure that the head of the fastening bolt does not exceed the bottom of the battery box. If the height of the second platform 25 is too small, it is not conducive to waterproofing and foreign body collision. If the height of the second platform 25 is too large, it is not conducive to the cold heading process.

[0068] The height of the sleeve body 11 may range from 90 mm to 100 mm, which may be specifically determined according to the middle cross beam and the upper cover of the battery box.

[0069] In one embodiment of the present invention, the inner cavity and / or outer surface of the sleeve structure is provided with an electroplating layer.

[0070] It should be noted that by adding an electroplating layer to the inner cavity of the sleeve structure, or adding an electroplating layer to the outer surface of the sleeve structure, or adding an electroplating layer to both the inner cavity and the outer surface of the sleeve structure, the corrosion resistance of the sleeve structure can be effectively improved.

[0071] The material of the electroplating layer may be zinc-nickel, and the thickness of the electroplating layer is at least 8 microns, preferably between 8-15 microns.

[0072] Combination Figure 5 As shown, an embodiment of the utility model further provides a battery box assembly, including a battery box and the mounting sleeve as described above, and also including a battery pack, wherein the battery box includes a box body 6 and an intermediate crossbeam 7, wherein the intermediate crossbeam 7 is arranged in the box body 6 to divide the box body 6 into at least two cavities, and the battery pack is installed in the cavity.

[0073] It should be noted that at least one intermediate crossbeam 7 is installed inside the box body 6, so the interior of the box body 6 can be divided into at least one cavity by the intermediate crossbeam 7, and the battery pack is installed in the cavity; wherein the box body 6 may include a bottom plate 61 and four side plates. In other words, the four side plates form a rectangular frame and enclose the bottom plate 61 to form the entire box body 6. If there are multiple intermediate crossbeams 7, the multiple intermediate crossbeams 7 can be distributed inside the box body 6 along the extension direction (length direction) of the box body 6 at intervals. If the number of intermediate crossbeams 7 is two (such as Figure 5 As shown), the interior of the box body 6 can be divided into three cavities.

[0074] The extension direction of the box body 6 can be Figure 5 The coordinate system is parallel to the Y-axis.

[0075] The battery box assembly has at least all the technical effects of the mounting sleeve, which will not be elaborated here.

[0076] In one embodiment of the present invention, Figure 5 and Figure 6 As shown, a plurality of grooves 71 are spaced apart on one side of the middle cross beam 7 away from the bottom plate 61 of the box body 6, and the sleeve structure of the mounting sleeve is sequentially penetrated through the grooves 71 of the bottom plate 61 and the middle cross beam 7, and the sleeve nut 5 of the mounting sleeve is in the groove 71 and abuts against the middle cross beam 7.

[0077] It should be noted that at least two grooves 71 are provided on each intermediate cross beam 7, and the number of the grooves 71 is the same as the number of the mounting sleeves; for example Figure 5 In the embodiment, three grooves 71 can be set on each middle cross beam 7, and a mounting sleeve is set at each groove 71. Specifically, the first body 24 of the sleeve structure is located below the bottom plate 61 of the battery box, and the sleeve body 11 of the sleeve structure is penetrated from bottom to top through the bottom plate 61 of the battery box and the middle cross beam 7, and then connected to the chassis of the vehicle by fastening bolts and fastening nuts; and the sleeve nut 5 is sleeved on the external thread 111 of the sleeve body 11 and abuts against the middle cross beam 7, thereby not only realizing the abutment between the sleeve structure and the middle cross beam 7, but also because the sleeve nut 5 is in the groove 71, in other words, the sleeve nut 5 is not higher than the groove 71, so that the sleeve nut 5 will not interfere with the connection between the middle cross beam 7 of the battery box and the chassis of the vehicle.

[0078] In one embodiment of the present invention, Figure 4 As shown, the battery box also includes a water cooling plate 8, which is arranged inside the box body 6 and is in contact with and connected to the bottom wall of the battery pack; the mounting sleeve sequentially passes through the bottom plate 61 of the box body 6, the water cooling plate 8 and the middle cross beam 7.

[0079] It should be noted that the water cooling plate 8 is arranged on the bottom wall of the box body 6, for example, the upper part of the bottom plate 61, and the water cooling plate 8 is connected to the bottom plate 61 of the box body 6, and the battery pack is installed in the battery box and the bottom of the battery pack is in contact and connected with the water cooling plate 8, so that the water cooling plate 8 not only cools down the battery pack, but also because the water cooling plate 8 is inside the box body 6, it can prevent the water cooling plate 8 from being hit by foreign objects on the road during driving of the vehicle, thereby realizing safety protection of the water cooling plate 8.

[0080] When the sleeve structure of the mounting sleeve penetrates into the battery box, the sleeve structure in the mounting sleeve sequentially penetrates the bottom plate 61 , the water cooling plate 8 and the middle cross beam 7 .

[0081] An embodiment of the utility model further provides a vehicle, comprising the battery box assembly as described above, and also comprising a chassis, wherein the battery box assembly is mounted on the chassis.

[0082] It should be noted that the fastening bolts in the battery box assembly are passed through the bottom plate 61, the water cooling plate 8 and the middle cross beam 7 of the battery box and connected to the chassis through fastening nuts, so that the battery box is fixedly installed on the chassis. The vehicle can be an electric vehicle or other vehicle that needs to install the battery box assembly on the chassis, which is not specifically limited here.

[0083] The vehicle has at least all the technical effects of the battery box assembly, which will not be elaborated here.

[0084] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A mounting sleeve, characterized in that: The invention comprises a sleeve structure and a sleeve nut (5), wherein the sleeve structure comprises a sleeve body (11) and a flange (12), wherein the sleeve body (11) and the flange (12) are integrally formed; the sleeve body (11) and the flange (12) are integrally formed by using a cold heading process, a hot forging process or a spin forming process; an outer wall of the sleeve body (11) is provided with an external thread (111), the sleeve nut (5) is sleeved outside the sleeve body (11) and is threadedly connected to the external thread (111), the sleeve body (11) is used to penetrate the middle cross beam (7) of the battery box, and the sleeve nut (5) is used to abut against the middle cross beam (7) of the battery box.

2. The mounting sleeve according to claim 1, characterized in that: The inner wall of the sleeve body (11) is provided with a hexagonal hole (233), and the hexagonal hole (233) is used for inserting an auxiliary tool to assist the sleeve nut (5) to be fastened to the sleeve body (11).

3. The mounting sleeve according to claim 1 or 2, characterized in that: The flange (12) further comprises a fastening bolt and a fastening nut. The flange (12) comprises a second platform (25) and a first platform (24). The second platform (25) is a cylindrical structure. The diameter of the cylindrical structure is greater than the diameter of the sleeve body (11). One end of the cylindrical structure is connected to one end of the sleeve body (11). The other end of the cylindrical structure is folded outward and extends to form the first platform (24). The head end of the fastening bolt is located in the second platform (25), and the screw portion of the fastening bolt passes through the sleeve body (11) and is fixed by the fastening nut.

4. The mounting sleeve according to claim 3, characterized in that: An annular groove portion (241) is provided on the outer edge of the first platform (24) and is coaxially arranged with the second platform (25), and a sealant structure is provided in the annular groove portion (241).

5. The mounting sleeve according to claim 4, characterized in that: The thickness of the sealant structure along the axial direction of the first platform (24) ranges from 0.8 mm to 1.2 mm; and the radial dimension of the annular groove portion (241) is 0.10 to 0.15 times the diameter of the first platform (24).

6. The mounting sleeve according to claim 3, characterized in that: When the inner wall of the sleeve body (11) is provided with a hexagonal hole (233), the height of the hexagonal hole (233) ranges from 5.5 mm to 6.5 mm; and the height of the second platform (25) ranges from 15 mm to 18 mm.

7. The mounting sleeve according to claim 1, characterized in that: The inner cavity and / or outer surface of the sleeve structure is provided with an electroplating layer.

8. A battery box assembly, characterized in that: It comprises a battery box and a mounting sleeve as described in any one of claims 1 to 7, and also comprises a battery pack, wherein the battery box comprises a box body (6) and an intermediate crossbeam (7), wherein the intermediate crossbeam (7) is arranged in the box body (6) to divide the box body (6) into at least two cavities, and the battery pack is installed in the cavity.

9. The battery box assembly according to claim 8, characterized in that: A plurality of grooves (71) are provided at intervals on one side of the middle cross beam (7) away from the bottom plate (61) of the box body (6); a sleeve structure of the mounting sleeve is sequentially inserted into the bottom plate (61) and the grooves (71) of the middle cross beam (7); a sleeve nut (5) of the mounting sleeve is located in the groove (71) and abuts against the middle cross beam (7).

10. The battery box assembly according to claim 8, characterized in that: The battery box further comprises a water cooling plate (8), which is arranged inside the box body (6) and is in contact with and connected to the bottom wall of the battery pack; the mounting sleeve sequentially penetrates the bottom plate (61) of the box body (6), the water cooling plate (8) and the middle cross beam (7).

11. A vehicle, characterized in that: It comprises a battery box assembly as described in any one of claims 8 to 10, and also comprises a chassis, and the battery box assembly is installed on the chassis.

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