Sleeve, battery box, battery pack and vehicle

Abstract

The utility model discloses a sleeve, a battery box, a battery pack and a vehicle, the sleeve is used for being mounted in a mounting hole at a non-metal flange, the sleeve comprises a body and a bulge, the body is in interference fit in the mounting hole, the bulge is arranged on the peripheral surface of the body, the bulge is provided with a first surface and a second surface which are arranged along the axial direction of the mounting hole, and the first surface and the second surface form an angle; the first face and the second face intersect to form a limiting edge abutting against the inner surface of the mounting hole. When the sleeve provided by the utility model is mounted in the mounting hole at the non-metal flange, the sleeve is not easy to slide relatively, so that the situation that the compression stroke of the sealing foam positioned below the non-metal flange is shortened due to overlarge height difference between the bottom surface of the sleeve and the bottom surface of the non-metal flange is effectively avoided, and the sealing effect of the sealing foam is better.

Description

Technical Field

[0001] The present application relates to the technical field of battery packs, and in particular to a sleeve, a battery box, a battery pack and a vehicle. Background Art

[0002] Due to the demand for lightweight, power batteries generally use non-metallic box covers. Since the stiffness of non-metallic materials is relatively low, in order to prevent the bolts from crushing the non-metallic flange, thereby causing excessive bolt torque attenuation or seal failure, a steel sleeve is usually nested in the mounting hole of the non-metallic flange.

[0003] In the related art, after the steel sleeve and the non-metallic flange are assembled, the non-metallic flange will be pressed by the sealing foam below and move upward relative to the steel sleeve, resulting in a shorter compression stroke of the sealing foam and a poor sealing effect. Utility Model Content

[0004] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, an embodiment of the present application proposes a sleeve, which is not prone to relative sliding when installed in a mounting hole at a non-metallic flange, effectively avoiding the shortening of the compression stroke of the sealing foam located under the non-metallic flange due to the large height difference between the bottom surface of the sleeve and the bottom surface of the non-metallic flange, thereby improving the sealing effect of the sealing foam.

[0006] The embodiments of the present application also provide a battery box, a battery pack and a vehicle.

[0007] The sleeve of the embodiment of the present application is used to be installed in a mounting hole at a non-metallic flange, and the sleeve includes a main body and a protrusion, and the main body is interference fit in the mounting hole; the protrusion is arranged on the outer peripheral surface of the main body, and the protrusion has a first surface and a second surface arranged along the axial direction of the mounting hole, the first surface and the second surface are at an angle, and the first surface and the second surface intersect to form a limiting edge that abuts against the inner surface of the mounting hole.

[0008] According to the sleeve of the embodiment of the present application, when the body is interference-fitted in the mounting hole on the non-metallic flange, the limiting edge formed at the intersection of the first surface and the second surface of the protrusion abuts against the inner surface of the mounting hole, and compresses the inner surface of the mounting hole to deform and concave. At this time, the portion of the protrusion including the limiting edge cooperates with the deformed portion of the inner surface of the mounting hole to achieve relative fixation of the sleeve body and the non-metallic flange in the axial direction of the mounting hole. When one side of the non-metallic flange is compressed by the foam, the non-metallic flange is less likely to move toward the other side relative to the sleeve. Thus, the non-metallic flange can be maintained at a set position relative to the sleeve, rather than moving to other positions along the expansion direction of the foam under the pressure of the foam as in the related art. The non-metallic flange has higher reliability in limiting the foam, the compression stroke of the foam is longer, and the sealing effect of the foam is better.

[0009] In some embodiments, an angle between the first surface and the axial direction of the mounting hole is α, wherein 70°≤α≤90°.

[0010] In some embodiments, the angle between the second surface and the axial direction of the mounting hole is β, wherein 10°≤β≤20°.

[0011] In some embodiments, the body defines a through hole, and the outer peripheral surface of the body is provided with an opening connected to the through hole, the axial dimension of the opening in the through hole is equal to the axial dimension of the body in the through hole, and the opening has a third surface and a fourth surface opposite to each other along the circumference of the through hole, and the body is interference fit in the mounting hole by reducing the distance between the third surface and the fourth surface.

[0012] In some embodiments, the protrusion extends along the circumference of the through hole, and two opposite end surfaces of the protrusion along the circumference of the through hole are coplanar with the third surface and the fourth surface, respectively.

[0013] In some embodiments, a distance between the third surface and the fourth surface in the circumferential direction of the through hole is L, wherein 1 mm≤L≤2 mm.

[0014] In some embodiments, the body has a fifth surface and a sixth surface axially opposite to the mounting hole, wherein:

[0015] A first chamfer is provided at a connection between the fifth surface and the outer peripheral surface of the body, and the outer diameter of the body at the fifth surface is smaller than the diameter of the mounting hole;

[0016] And / or, a second chamfer is provided at a connection between the sixth surface and the outer peripheral surface of the main body, and an outer diameter of the main body at the sixth surface is smaller than a diameter of the mounting hole.

[0017] The battery box according to an embodiment of the present application includes a box cover and a sleeve as described in any of the above embodiments, the box cover includes a non-metallic flange, the non-metallic flange is provided with a mounting hole, and the body is interference fit in the mounting hole.

[0018] The technical advantages of the battery box according to the embodiment of the present application are the same as the technical advantages of the sleeve in the above-mentioned embodiment, and will not be repeated here.

[0019] The battery pack according to the embodiment of the present application includes the battery box as described in the above embodiment.

[0020] The technical advantages of the battery pack according to the embodiment of the present application are the same as the technical advantages of the battery box in the above-mentioned embodiment, and will not be repeated here.

[0021] The vehicle according to the embodiment of the present application includes the battery pack as described in the above embodiment.

[0022] The technical advantages of the vehicle according to the embodiment of the present application are the same as the technical advantages of the battery pack in the above-mentioned embodiment, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of a sleeve according to an embodiment of the present application.

[0024] Figure 2 is a cross-sectional view of a sleeve according to an embodiment of the present application.

[0025] Figure 3 is a cross-sectional view of a battery box according to an embodiment of the present application.

[0026] Figure 4 is an exploded view of a battery box according to an embodiment of the present application.

[0027] Figure 5 is another cross-sectional view of a battery box according to an embodiment of the present application.

[0028] Figure 6 yes Figure 5 A partial enlarged view of the sleeve.

[0029] Reference numerals:

[0030] 1. Sleeve; 11. Body; 111. Through hole; 112. Opening; 113. Third side; 114. Fourth side; 115. Fifth side; 116. Sixth side; 117. First chamfer; 118. Second chamfer; 12. Protrusion; 121. First side; 122. Second side; 123. Limiting edge; 2. Box cover; 21. Non-metallic flange; 211. Mounting hole; 3. Foam; 4. Bolt; 5. Rivet nut; 6. Gasket. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, but cannot be understood as limiting the present application.

[0032] Combine the following Figure 1-Figure 6 A sleeve 1 according to an embodiment of the present application is described.

[0033] The sleeve 1 of the embodiment of the present application is used to be installed in the mounting hole 211 at the non-metallic flange 21, and the sleeve 1 includes a body 11 and a protrusion 12. The protrusion 12 is arranged on the outer peripheral surface of the body 11, and the protrusion 12 has a first surface 121 and a second surface 122 arranged along the axial direction of the mounting hole 211, the first surface 121 and the second surface 122 form an angle, and the first surface 121 and the second surface 122 intersect to form a limiting edge 123 that abuts against the inner surface of the mounting hole 211.

[0034] According to the sleeve 1 of the embodiment of the present application, when the body 11 is interference-fitted in the mounting hole 211 on the non-metallic flange 21, the limiting rib 123 formed at the intersection of the first surface 121 and the second surface 122 in the protrusion 12 abuts against the inner surface of the mounting hole 211, and compresses the inner surface of the mounting hole 211 to deform and concave. At this time, the part of the protrusion 12 including the limiting rib 123 cooperates with the deformed part of the inner surface of the mounting hole 211 to achieve the relative fixation of the sleeve body 11 and the non-metallic flange 21 in the axial direction of the mounting hole 211. When one side of the non-metallic flange 21 is compressed by the foam 3, the non-metallic flange 21 is less likely to move toward the other side relative to the sleeve 1, so that the non-metallic flange 21 can be maintained at a set position relative to the sleeve 1, instead of moving to other positions along the expansion direction of the foam 3 under the pressure of the foam 3 as in the related art. The non-metallic flange 21 of this embodiment has higher reliability in limiting the foam 3, the compression stroke of the foam 3 is longer, and the sealing effect of the foam 3 is better.

[0035] It should be noted that the limiting edge 123 formed at the intersection of the first surface 121 and the second surface 122 is perpendicular to the axial direction of the mounting hole 211 , and the limiting edge 123 is adjacent to the center position of the body 11 in the axial direction of the mounting hole 211 .

[0036] In some embodiments, Figure 2 As shown, the angle between the first surface 121 and the axial direction of the mounting hole 211 is α, wherein 70°≤α≤90°.

[0037] At this time, a larger angle is formed between the axial direction of the first surface 121 and the mounting hole 211. Under the limitation of the first surface 121, the non-metallic flange 21 is less likely to move relative to the sleeve 1 in the direction from the first surface 121 toward the second surface 122, thereby ensuring that the distance between the surface of the non-metallic flange 21 adjacent to the foam 3 and the surface of the sleeve 1 adjacent to the foam 3 is stable, avoiding the distance from becoming larger and causing the compression stroke of the foam 3 to become shorter.

[0038] Specifically, the angle α between the first surface 121 and the axial direction of the mounting hole 211 may be 70°, 80°, or 90°.

[0039] In some embodiments, Figure 2 As shown, the angle between the second surface 122 and the axial direction of the mounting hole 211 is β, wherein 10°≤β≤20°.

[0040] At this time, the second surface 122 mainly plays a guiding role, facilitating the non-metallic flange 21 to move relative to the sleeve 1 along the direction from the second surface 122 to the first surface 121, thereby facilitating the adjustment of the position of the sleeve 1 in the mounting hole 211, and facilitating the removal and installation of the sleeve 1. Moreover, combined with the above-mentioned angle α, the angle between the first surface 121 and the second surface 122 will not be too small to deteriorate its strength, or the depth of its embedding into the inner surface of the mounting hole 211 will not be too large to affect the convenience of disassembly and assembly of the sleeve 1. The angle between the first surface 121 and the second surface 122 will not be too large to result in a small friction force between the inner surface of the mounting hole 211, thereby affecting the sealing reliability of the foam 3.

[0041] Specifically, the angle β between the second surface 122 and the axial direction of the mounting hole 211 may be 10°, 15°, or 20°.

[0042] In some embodiments, Figure 1 As shown, the body 11 defines a through hole 111, the axial direction of the through hole 111 is consistent with the axial direction of the mounting hole 211, the outer peripheral surface of the body 11 is provided with an opening 112 connected to the through hole 111, the axial dimension of the opening 112 in the through hole 111 is equal to the axial dimension of the body 11 in the through hole 111, the opening 112 has a third surface 113 and a fourth surface 114 opposite to each other along the circumference of the through hole 111, and the body 11 is interference fit in the mounting hole 211 by reducing the distance between the third surface 113 and the fourth surface 114.

[0043] That is, when assembling the sleeve 1, first use a tool to compress the body 11 to deform so that the third surface 113 is close to the fourth surface 114, so that the body 11 and the protrusion 12 fit in the mounting hole 211 without interfering with the inner surface of the mounting hole 211, and then release the pressure on the body 11, the body 11 is reset, and the inner surface of the mounting hole 211 is compressed by the limiting edge 123 on the protrusion 12 to complete the reliable installation of the sleeve 1 on the non-metallic flange 21.

[0044] Specifically, when the third surface 113 and the fourth surface 114 are in contact, the projection of the body 11 and the protrusion 12 as a whole along the axial direction of the through hole 111 completely overlaps within the projection of the mounting hole 211, thereby ensuring that the sleeve 1 is conveniently and quickly installed on the non-metallic flange 21. In order to ensure the sealing reliability of the foam 3, after the sleeve 1 of this embodiment is installed on the non-metallic flange 21, the distance between the surface of the sleeve 1 adjacent to the foam 3 and the surface of the non-metallic flange 21 adjacent to the foam 3 is D, where 0≤D≤0.1mm.

[0045] In some embodiments, Figure 1-Figure 5 As shown, the protrusion 12 extends along the circumference of the through hole 111 , and two opposite end surfaces of the protrusion 12 along the circumference of the through hole 111 are coplanar with the third surface 113 and the fourth surface 114 , respectively.

[0046] As a result, the contact area between the protrusion 12 and the inner surface of the mounting hole 211 is larger, and the compression deformation area of ​​the inner surface of the mounting hole 211 by the limiting edge 123 on the protrusion 12 is larger, thereby making the axial limiting reliability of the sleeve 1 and the non-metallic flange 21 in the through hole 111 higher.

[0047] In some embodiments, a distance between the third surface 113 and the fourth surface 114 in the circumferential direction of the through hole 111 is L, wherein 1 mm≤L≤2 mm.

[0048] At this time, it is ensured that the sleeve 1 does not interfere with the inner surface of the mounting hole 211 during the insertion process of the mounting hole 211 when the third surface 113 and the fourth surface 114 are abutted, and it is also ensured that the circumferential size of the main body 11 in the through hole 111 is not too small to cause the interaction force between the protrusion 12 and the inner surface of the mounting hole 211 to be small, thereby avoiding the friction between the sleeve 1 and the non-metallic flange 21 being too small to affect the sealing of the foam 3.

[0049] Specifically, the distance L between the third surface 113 and the fourth surface 114 in the circumferential direction of the through hole 111 may be 1 mm, 1.5 mm, or 2 mm.

[0050] In some embodiments, Figure 2 As shown, the body 11 has a fifth surface 115 and a sixth surface 116 which are axially opposite to the mounting hole 211. A first chamfer 117 is provided at the connection between the fifth surface 115 and the outer peripheral surface of the body 11, and the outer diameter of the body 11 at the fifth surface 115 is smaller than the diameter of the mounting hole 211. And / or, a second chamfer 118 is provided at the connection between the sixth surface 116 and the outer peripheral surface of the body 11, and the outer diameter of the body 11 at the sixth surface 116 is smaller than the diameter of the mounting hole 211.

[0051] At this time, the body 11 can be inserted into the mounting hole 211 of the non-metallic flange 21 through the first chamfer 117 or the second chamfer 118 , and the installation of the sleeve 1 as a whole in the mounting hole 211 of the non-metallic flange 21 is convenient and reliable.

[0052] like Figure 5 As shown, the battery box according to an embodiment of the present application includes a box cover 2 and a sleeve 1 as in any of the above embodiments, the box cover 2 includes a non-metallic flange 21, a mounting hole 211 is provided on the non-metallic flange 21, and the body 11 is interference fit in the mounting hole 211.

[0053] The technical advantages of the battery box according to the embodiment of the present application are the same as the technical advantages of the sleeve 1 in the above-mentioned embodiment, and will not be repeated here.

[0054] like Figure 5 and Figure 6 As shown, the sleeve 1 is fitted in the mounting hole 211 of the non-metallic flange 21, the foam 3 is fitted between the non-metallic flange 21 and the metal flange of the box cover 2, the bolt 4 passes through the gasket 6, the through hole 111 of the sleeve 1 and the metal flange, and finally is threadedly fitted with the rivet nut 5. Among them, the sleeve 1 is sandwiched between the gasket 6 and the rivet nut 5, and the non-metallic flange 21 is spaced apart from the gasket 6.

[0055] The battery pack according to the embodiment of the present application includes the battery box as described in the above embodiment.

[0056] The technical advantages of the battery pack according to the embodiment of the present application are the same as the technical advantages of the battery box in the above-mentioned embodiment, and will not be repeated here.

[0057] The vehicle according to the embodiment of the present application includes the battery pack as described in the above embodiment.

[0058] The technical advantages of the vehicle according to the embodiment of the present application are the same as the technical advantages of the battery pack in the above-mentioned embodiment, which will not be repeated here.

[0059] 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 referred device or element 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.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature 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. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0063] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean 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 described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present application. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present application.

Claims

1. A sleeve for installation in a mounting hole on a non-metallic flange, characterized in that: The sleeve comprises: a body, the body being interference fit within the mounting hole; and A protrusion is arranged on the outer peripheral surface of the main body, and the protrusion has a first surface and a second surface arranged along the axial direction of the mounting hole, the first surface and the second surface are at an angle, and the first surface and the second surface intersect to form a limiting edge that abuts against the inner surface of the mounting hole.

2. The sleeve according to claim 1, characterized in that The angle between the first surface and the axial direction of the mounting hole is α, wherein 70°≤α≤90°.

3. The sleeve according to claim 1 or 2, characterized in that: An angle between the second surface and the axial direction of the mounting hole is β, wherein 10°≤β≤20°.

4. The sleeve according to claim 1, characterized in that The main body defines a through hole, the axial direction of the through hole is consistent with the axial direction of the mounting hole, the outer peripheral surface of the main body is provided with an opening connected to the through hole, the axial dimension of the opening in the through hole is equal to the axial dimension of the main body in the through hole, the opening has a third surface and a fourth surface opposite to each other along the circumference of the through hole, and the main body is interference fit in the mounting hole by reducing the distance between the third surface and the fourth surface.

5. The sleeve according to claim 4, characterized in that The protrusion extends along the circumferential direction of the through hole, and two opposite end surfaces of the protrusion along the circumferential direction of the through hole are coplanar with the third surface and the fourth surface respectively.

6. The sleeve according to claim 4, characterized in that A distance between the third surface and the fourth surface in the circumferential direction of the through hole is L, wherein 1 mm≤L≤2 mm.

7. The sleeve according to claim 1, characterized in that The body has a fifth surface and a sixth surface axially opposite to the mounting hole, wherein: A first chamfer is provided at a connection between the fifth surface and the outer peripheral surface of the body, and the outer diameter of the body at the fifth surface is smaller than the diameter of the mounting hole; And / or, a second chamfer is provided at a connection between the sixth surface and the outer peripheral surface of the main body, and an outer diameter of the main body at the sixth surface is smaller than a diameter of the mounting hole.

8. A battery box, characterized in that: It comprises a box cover and a sleeve according to any one of claims 1 to 7, wherein the box cover comprises a non-metallic flange, a mounting hole is provided on the non-metallic flange, and the body is interference-fitted in the mounting hole.

9. A battery pack, characterized in that: Comprising a battery box according to claim 8.

10. A vehicle, characterized in that: Comprising the battery pack according to claim 9.

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