Bushing, battery pack and vehicle

Abstract

The utility model discloses a bushing, a battery pack and a vehicle, the bushing comprises a base, the base is provided with an assembling groove, and the bottom wall of the assembling groove is provided with a first mounting hole communicated with the assembling groove; at least part of the top cover is arranged in the assembling groove and connected with the base, a second mounting hole penetrating in the depth direction of the assembling groove is formed in the top cover, and the second mounting hole is opposite to and communicates with the first mounting hole; and at least part of the elastic piece is arranged in the assembling groove, and the elastic piece is used for driving the top cover to move in the direction away from the bottom wall of the assembling groove. According to the bushing disclosed by the embodiment of the utility model, the vibration transmitted to the battery pack from the vehicle body is effectively reduced through the vibration reduction and buffering effects of the bushing, so that the service life of the battery pack is prolonged, and the safety of the battery pack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a bushing, a battery pack and a vehicle. Background Art

[0002] As the new energy vehicle industry continues to grow at a high speed, the safety of new energy vehicles will become more important. Power batteries, as energy storage and power output devices, are the core components of new energy vehicles. In the prior art, the battery pack is usually connected to the vehicle body by bolting the bushing of the battery pack into the corresponding hole of the vehicle body. Since the bushing of the battery pack is tightly attached to the vehicle body, the vibration of the battery pack is consistent with the vehicle body, which affects the service life of the battery pack. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a bushing, which has a vibration reduction and buffering function, thereby effectively reducing the vibration transmitted from the vehicle body to the battery pack.

[0004] The utility model also provides a battery pack, wherein the vehicle comprises the above-mentioned bushing.

[0005] The utility model also provides a vehicle, which comprises the above-mentioned battery pack.

[0006] According to the bushing of the utility model embodiment, it includes: a base, the base has an assembly groove, the bottom wall of the assembly groove has a first mounting hole connected with the assembly groove; a top cover, at least a part of the top cover is arranged in the assembly groove and connected with the base, the top cover has a second mounting hole penetrating in the depth direction of the assembly groove, the second mounting hole is opposite to and connected with the first mounting hole; an elastic member, at least a part of the elastic member is arranged in the assembly groove, and is used to drive the top cover to move in a direction away from the bottom wall of the assembly groove.

[0007] According to the bushing of the embodiment of the utility model, the base has an assembly groove, the bottom wall of the assembly groove has a first mounting hole connected to the assembly groove, at least a portion of the top cover is arranged in the assembly groove and connected to the base, the top cover has a second mounting hole penetrating in the depth direction of the assembly groove, the second mounting hole is opposite to and connected to the first mounting hole, and at least a portion of the elastic member is arranged in the assembly groove to drive the top cover to move in a direction away from the bottom wall of the assembly groove, thereby realizing the vibration reduction and buffering effect of the bushing, thereby effectively reducing the vibration transmitted from the vehicle body to the battery pack, thereby improving the service life and safety of the battery pack.

[0008] In some embodiments of the utility model, the top cover includes: a supporting portion, at least a portion of which is located in the assembly groove; a cover body, which is located outside the assembly groove and connected to an end of the supporting portion that is away from the bottom wall of the assembly groove, the second mounting hole passes through the supporting portion and the cover body, the cover body is connected to the base, and the elastic member is located between the bottom wall of the assembly groove and the cover body.

[0009] In some embodiments of the present invention, the elastic member is disposed around the outer peripheral wall of the support portion.

[0010] In some embodiments of the present invention, the base is snap-connected to the top cover.

[0011] In some embodiments of the utility model, a slot is provided on the base, and the slot extends along the circumferential direction of the base, the slot includes a first area and a second area arranged in the circumferential direction of the base, a protrusion is provided on the outer wall of the second area away from the central axis of the base, and the top cover is provided with a hook extending toward the bottom wall of the assembly slot, the hook includes a first section and a second section, one end of the first section is connected to the top cover, and the other end extends toward the bottom wall of the assembly slot, the second section is located at one end of the first section close to the bottom wall of the assembly slot and on the side of the first section away from the central axis of the top cover, the hook is suitable for entering the second area from the first area along the circumferential direction of the base, and the second section stops at the surface of the protrusion facing the bottom wall of the slot.

[0012] In some embodiments of the present invention, a side of the protrusion facing the bottom wall of the slot has a matching groove, and the second section has a locking protrusion matching with the matching groove.

[0013] In some embodiments of the present invention, the elastic member is a spring or a spring sheet.

[0014] According to the battery pack of the embodiment of the utility model, it includes: a shell, the shell includes a side beam plate extending along the length direction of the battery pack, the side beam plate has a mounting groove; the above-mentioned bushing, at least part of the base is located in the mounting groove.

[0015] According to the battery pack of the embodiment of the utility model, a bushing is provided, and the outer shell includes a side beam plate extending along the length direction of the battery pack, the side beam plate has a mounting groove, at least a portion of the base is located in the mounting groove, the base has an assembly groove, the bottom wall of the assembly groove has a first mounting hole connected to the assembly groove, at least a portion of the top cover is arranged in the assembly groove and connected to the base, the top cover has a second mounting hole penetrating in the depth direction of the assembly groove, the second mounting hole is opposite to and connected to the first mounting hole, and at least a portion of the elastic member is arranged in the assembly groove, which is used to drive the top cover to move in a direction away from the bottom wall of the assembly groove, thereby realizing the vibration reduction and buffering effect of the bushing, thereby effectively reducing the vibration transmitted to the battery pack by the vehicle body, and thereby improving the service life and safety of the battery pack.

[0016] In some embodiments of the utility model, there are a plurality of mounting grooves spaced apart along the length direction of the side beam plate, and the bushings are a plurality corresponding to the plurality of mounting grooves one by one; and / or, a limiting protrusion is provided on the outer peripheral wall of the base, and the limiting protrusion extends in a ring shape along the circumferential direction of the base, and the surface of the limiting protrusion away from the opening of the assembly groove is in contact with the side beam plate.

[0017] The vehicle according to an embodiment of the utility model comprises: the above-mentioned battery pack, the bottom wall of the mounting groove having a third mounting hole; a vehicle body, and a fastener sequentially passing through the third mounting hole, the first mounting hole, the second mounting hole and the vehicle body.

[0018] According to the vehicle of the embodiment of the utility model, a battery pack is provided, the bottom wall of the mounting groove has a third mounting hole, the fasteners are sequentially penetrated through the third mounting hole, the first mounting hole, the second mounting hole and the vehicle body, the outer shell includes a side beam plate extending along the length direction of the battery pack, the side beam plate has a mounting groove, at least part of the base is located in the mounting groove, and the top cover is driven by the elastic member of the bushing to move in a direction away from the bottom wall of the assembly groove, so that the bushing plays a vibration reduction and buffering role, thereby effectively reducing the vibration transmitted from the vehicle body to the battery pack, thereby improving the service life and safety of the battery pack and improving the reliability of the vehicle.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a structural diagram of a battery pack according to an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 It is a structural diagram of a bushing according to an embodiment of the utility model;

[0024] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0025] Figure 5 is a front view of a bushing according to an embodiment of the utility model;

[0026] Figure 6 is along Figure 5 Sectional view along the mid-DD line;

[0027] Figure 7 yes Figure 6 Enlarged view of point C in the middle.

[0028] Reference numerals:

[0029] 1000, battery pack;

[0030] 100. Bushing;

[0031] 1. base; 11. assembly groove; 111. first mounting hole; 12. slot; 121. first area; 122. second area; 13. protrusion; 131. matching groove; 14. limiting protrusion;

[0032] 2. top cover; 21. second mounting hole; 22. cover body; 221. hook; 2211. first section; 2212. second section; 2213. protrusion; 23. support portion;

[0033] 3. Elastic parts;

[0034] 200, outer shell; 201, side beam plate; 2011, mounting groove. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present utility model, it is necessary to understand 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 positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The bushing 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0039] like Figure 1-Figure 3 , Figure 5 and Figure 6 As shown, the bushing 100 according to the embodiment of the utility model comprises a base 1, a top cover 2 and an elastic member 3. The base 1 has an assembly groove 11, the bottom wall of the assembly groove 11 has a first mounting hole 111 connected to the assembly groove 11, at least part of the top cover 2 is arranged in the assembly groove 11 and connected to the base 1, the top cover 2 has a second mounting hole 21 penetrating in the depth direction of the assembly groove 11, the second mounting hole 21 is opposite to and connected to the first mounting hole 111, at least part of the elastic member 3 is arranged in the assembly groove 11, and is used to drive the top cover 2 to move in a direction away from the bottom wall of the assembly groove 11.

[0040] It can be understood that the bottom wall of the assembly groove 11 of the base 1 has a first mounting hole 111 connected to the assembly groove 11, and the top cover 2 has a second mounting hole 21 penetrating in the depth direction of the assembly groove 11, and the second mounting hole 21 is opposite to and connected to the first mounting hole 111, so that the bushing 100 provides fasteners for passing through the first mounting hole 111 and the second mounting hole 21, so that when the bushing 100 is applied to the battery pack 1000, the fasteners pass through the body, the first mounting hole 111 and the second mounting hole 21, so that the battery pack 1000 is connected to the body through the bushing 100.

[0041] At the same time, since at least part of the elastic member 3 is disposed in the assembly groove 11, it is used to drive the top cover 2 to move in a direction away from the bottom wall of the assembly groove 11. In the process of the vibration of the vehicle body being transmitted to the battery pack 1000 through the bushing 100, the elastic member 3 drives the top cover 2 to move in a direction away from the bottom wall of the assembly groove 11, thereby realizing the vibration reduction and buffering effect of the bushing 100, thereby effectively reducing the vibration transmitted from the vehicle body to the battery pack 1000, thereby improving the service life and safety of the battery pack 1000. In addition, since at least part of the elastic member 3 is disposed in the assembly groove 11, the base 1 protects the elastic member 3, thereby improving the reliability and service life of the bushing 100.

[0042] Specifically, the bushing 100 can reduce the vibration transmitted from the vehicle body to the battery pack 1000, effectively reduce the loosening of components or airtight failure caused by the attenuation of the torque of the fixing bolts due to the vibration of the battery pack 1000, and reduce the damage of the electrical components in the battery pack 1000 and the internal parts of the BMS due to the vibration, thereby effectively improving the service life of the battery pack 1000. At the same time, the battery module in the battery pack 1000 is connected to the shell 200 of the battery pack 1000 through the thermal conductive structural adhesive, which effectively reduces the deterioration of the thermal conductivity caused by the failure of the thermal conductive structural adhesive due to the vibration of the battery pack 1000, and further improves the reliability of the battery pack 1000.

[0043] According to the bushing 100 of the embodiment of the utility model, the base 1 has an assembly groove 11, the bottom wall of the assembly groove 11 has a first mounting hole 111 connected to the assembly groove 11, at least a portion of the top cover 2 is arranged in the assembly groove 11 and is connected to the base 1, the top cover 2 has a second mounting hole 21 penetrating in the depth direction of the assembly groove 11, the second mounting hole 21 is opposite to and connected to the first mounting hole 111, and at least a portion of the elastic member 3 is arranged in the assembly groove 11 to drive the top cover 2 to move in a direction away from the bottom wall of the assembly groove 11, thereby realizing the vibration reduction and buffering effect of the bushing 100, thereby effectively reducing the vibration transmitted from the vehicle body to the battery pack 1000, thereby improving the service life and safety of the battery pack 1000.

[0044] In some embodiments of the present invention, Figure 3-Figure 6As shown, the top cover 2 includes a support portion 23 and a cover body 22. Among them, at least part of the support portion 23 is located in the assembly groove 11, the cover body 22 is located outside the assembly groove 11 and connected to one end of the support portion 23 away from the bottom wall of the assembly groove 11, the second mounting hole 21 passes through the support portion 23 and the cover body 22, the cover body 22 is connected to the base 1, and the elastic member 3 is located between the bottom wall of the assembly groove 11 and the cover body 22. Therefore, the connection between the top cover 2 and the base 1 is realized by connecting the cover body 22 with the base 1, and the two ends of the elastic member 3 along the depth direction of the assembly groove 11 are respectively abutted against the bottom wall of the assembly groove 11 and the cover body 22, so as to ensure that the elastic member 3 drives the top cover 2 to move in the direction away from the bottom wall of the assembly groove 11, thereby ensuring the vibration reduction and buffering effect of the bushing 100.

[0045] In some embodiments of the present invention, Figure 6 As shown, the elastic member 3 is disposed around the outer peripheral wall of the support portion 23. Thus, the elastic member 3 is located in the assembly groove 11 and is disposed around the outer peripheral wall of the support portion 23, so that the vibration damping of the bushing 100 is further improved.

[0046] In some embodiments of the present invention, Figure 3-Figure 6 As shown, the base 1 is connected with the top cover 2 by snapping. Thus, the base 1 and the top cover 2 are easily assembled by snapping, and the elastic member 3 is easily arranged in the assembly groove 11, which reduces the difficulty of assembly and improves efficiency. Furthermore, one end of the cover body 22 close to the support portion 23 is snapped with the base 1, so that the base 1 and the top cover 2 are connected and the cover body 22 is arranged on the base 1 at the same time.

[0047] In some embodiments of the present invention, Figure 3-Figure 7 As shown, a slot 12 is provided on the base 1, and the slot 12 extends along the circumferential direction of the base 1. The slot 12 includes a first area 121 and a second area 122 arranged in the circumferential direction of the base 1, and a protrusion 13 is provided on the outer wall of the second area 122 away from the central axis of the base 1. The top cover 2 is provided with a hook 221 extending toward the bottom wall of the assembly groove 11, and the hook 221 includes a first section 2211 and a second section 2212. One end of the first section 2211 is connected to the top cover 2, and the other end extends toward the bottom wall of the assembly groove 11. The second section 2212 is located at one end of the first section 2211 close to the bottom wall of the assembly groove 11 and on the side of the first section 2211 away from the central axis of the top cover 2. The hook 221 is suitable for entering the second area 122 from the first area 121 along the circumferential direction of the base 1, and the second section 2212 stops at the surface of the protrusion 13 facing the bottom wall of the slot 12.

[0048] It can be understood that the assembly process of the bushing 100 is to first put the elastic member 3 into the assembly groove 11, and then in the process of placing at least a part of the top cover 2 in the assembly groove 11, the hook 221 on the top cover 2 enters the second area 122 from the first area 121 along the circumferential direction of the base 1, and the second section 2212 of the hook 221 and the protrusion 13 on the outer wall of the second area 122 are stopped against the surface of the bottom wall of the groove 12, thereby realizing the snap connection between the base 1 and the top cover 2. At the same time, the protrusion 13 is located on the outer wall of the second area 122 away from the central axis of the base 1, and the second section 2212 is located on the side of the first section 2211 away from the central axis of the top cover 2, so as to ensure that the second section 2212 of the hook 221 and the protrusion 13 on the outer wall of the second area 122 are stopped against the surface of the bottom wall of the groove 12, thereby ensuring the reliability of the connection.

[0049] Furthermore, the hook 221 is arranged on a side of the cover body 22 close to the support portion 23, one end of the first section 2211 is connected to the cover body 22, and the other end extends toward the bottom wall of the assembly groove 11, and the second section 2212 is located at one end of the first section 2211 close to the bottom wall of the assembly groove 11 and on the side of the first section 2211 away from the central axis of the top cover 2. The hook 221 is adapted to enter the second area 122 along the circumferential direction of the base 1 from the first area 121, and the second section 2212 stops at the surface of the protrusion 13 facing the bottom wall of the slot 12, thereby realizing the snap connection between the cover body 22 and the base 1.

[0050] In some embodiments of the present invention, Figure 7 As shown, the side of the protrusion 13 facing the bottom wall of the slot 12 has a matching groove 131, and the second section 2212 has a locking protrusion 2213 that matches the matching groove 131. Therefore, after the hook 221 enters the second area 122 from the first area 121 along the circumferential direction of the base 1, the locking protrusion 2213 is located in the matching groove 131, and the second section 2212 and the surface of the protrusion 13 facing the bottom wall of the slot 12 are further stopped, thereby improving the reliability of the connection between the two, thereby improving the reliability of the bushing 100 as a whole.

[0051] In some embodiments of the present invention, the elastic member 3 is a spring or a spring sheet, thereby achieving vibration reduction and buffering of the bushing 100 through the elastic force of the spring or the spring sheet.

[0052] The battery pack 1000 according to an embodiment of the present invention is described below.

[0053] According to the battery pack 1000 of the present utility model, Figure 1 and Figure 2As shown, it includes a shell 200 and a bushing 100. The shell 200 includes a side beam plate 201 extending along the length direction of the battery pack 1000, and the side beam plate 201 has a mounting groove 2011, and at least part of the base 1 is located in the mounting groove 2011. Therefore, by at least part of the base 1 being located in the mounting groove 2011, the bushing 100 is located on the side beam plate 201, so that the vehicle body, the first mounting hole 111 and the second mounting hole 21 of the bushing 100 are penetrated by fasteners, and the battery pack 1000 is connected to the vehicle body through the bushing 100, and then the elastic member 3 drives the top cover 2 to move in a direction away from the bottom wall of the assembly groove 11, so as to realize the vibration reduction and buffering effect of the bushing 100, thereby effectively reducing the vibration transmitted from the vehicle body to the battery pack 1000, and thus improving the service life and safety of the battery pack 1000.

[0054] According to the battery pack 1000 of the embodiment of the utility model, a bushing 100 is provided, and the outer shell 200 includes a side beam plate 201 extending along the length direction of the battery pack 1000, the side beam plate 201 has a mounting groove 2011, at least a portion of the base 1 is located in the mounting groove 2011, the base 1 has an assembly groove 11, the bottom wall of the assembly groove 11 has a first mounting hole 111 connected to the assembly groove 11, at least a portion of the top cover 2 is arranged in the assembly groove 11 and is connected to the base 1, the top cover 2 has a second mounting hole 21 penetrating in the depth direction of the assembly groove 11, the second mounting hole 21 is opposite to and connected to the first mounting hole 111, at least a portion of the elastic member 3 is arranged in the assembly groove 11, and is used to drive the top cover 2 to move in a direction away from the bottom wall of the assembly groove 11, so as to realize the vibration reduction and buffering effect of the bushing 100, thereby effectively reducing the vibration transmitted to the battery pack 1000 by the vehicle body, thereby improving the service life and safety of the battery pack 1000.

[0055] In some embodiments of the present invention, Figure 1 As shown, the mounting grooves 2011 are multiple and spaced apart along the length direction of the side beam plate 201, and the bushings 100 are multiple and correspond to the multiple mounting grooves 2011. Therefore, during the connection between the battery pack 1000 and the vehicle body, the connection reliability between the battery pack 1000 and the vehicle body is improved by the cooperation between the multiple bushings 100 and the multiple mounting grooves 2011.

[0056] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the outer peripheral wall of the base 1 is provided with a limiting protrusion 1413, which extends in a ring shape along the circumferential direction of the base 1, and the surface of the limiting protrusion 1413 away from the opening of the assembly groove 11 is in contact with the side beam plate 201. Therefore, when the bushing 100 is located in the installation groove 2011, the connection strength between the two is further improved through the contact between the annular limiting protrusion 1413 and the side beam plate 201, thereby improving the connection reliability between the battery pack 1000 and the vehicle body.

[0057] The following describes a vehicle according to an embodiment of the present utility model.

[0058] The vehicle according to the embodiment of the utility model includes a battery pack 1000 and a vehicle body, the bottom wall of the mounting groove 2011 has a third mounting hole, and the fastener passes through the third mounting hole, the first mounting hole 111, the second mounting hole 21 and the vehicle body in sequence.

[0059] It is understandable that the housing 200 includes a side beam plate 201 extending along the length direction of the battery pack 1000, and the side beam plate 201 has a mounting groove 2011. At least part of the base 1 is located in the mounting groove 2011. Therefore, the third mounting hole, the first mounting hole 111, the second mounting hole 21 and the vehicle body are sequentially penetrated by fasteners, so that the battery pack 1000 and the vehicle body are connected through the bushing 100. At the same time, since the top cover 2 has the second mounting hole 21, so that the end of the top cover 2 away from the bottom wall of the assembly groove 11 is in contact with the vehicle body, in the process of the vibration of the vehicle body being transmitted through the bushing 100, the elastic member 3 of the bushing 100 drives the top cover 2 to move in the direction away from the bottom wall of the assembly groove 11, so that the bushing 100 plays a vibration reduction and buffering role, thereby effectively reducing the vibration transmitted from the vehicle body to the battery pack 1000, thereby improving the service life and safety of the battery pack 1000 and improving the reliability of the vehicle.

[0060] According to the vehicle of the embodiment of the utility model, a battery pack 1000 is provided, the bottom wall of the mounting groove 2011 has a third mounting hole, and the fasteners are sequentially penetrated through the third mounting hole, the first mounting hole 111, the second mounting hole 21 and the vehicle body, the outer shell 200 includes a side beam plate 201 extending along the length direction of the battery pack 1000, the side beam plate 201 has a mounting groove 2011, at least part of the base 1 is located in the mounting groove 2011, and the top cover 2 is driven by the elastic member 3 of the bushing 100 to move in a direction away from the bottom wall of the assembly groove 11, so that the bushing 100 plays a vibration reduction and buffering role, thereby effectively reducing the vibration transmitted from the vehicle body to the battery pack 1000, thereby improving the service life and safety of the battery pack 1000 and improving the reliability of the vehicle.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 utility model. In this specification, the schematic representation of the above terms does 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.

[0062] Although the embodiments of the present invention 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 spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A bushing, characterized in that: include: A base, wherein the base has an assembly groove, and a bottom wall of the assembly groove has a first mounting hole communicating with the assembly groove; A top cover, at least a portion of which is disposed in the assembly groove and connected to the base, the top cover having a second mounting hole penetrating in a depth direction of the assembly groove, the second mounting hole being opposite to and connected to the first mounting hole; An elastic member, at least a portion of which is disposed in the assembly groove, and is used to drive the top cover to move in a direction away from the bottom wall of the assembly groove.

2. The bushing according to claim 1, characterized in that The top cover comprises: a supporting portion, at least a portion of which is located in the assembly groove; A cover body, wherein the cover body is located outside the assembly groove and is connected to an end of the support portion that is away from the bottom wall of the assembly groove, the second mounting hole passes through the support portion and the cover body, the cover body is connected to the base, and the elastic member is located between the bottom wall of the assembly groove and the cover body.

3. The bushing according to claim 2, characterized in that The elastic member is disposed around the outer peripheral wall of the supporting portion.

4. The bushing according to claim 1, characterized in that The base is snap-connected to the top cover.

5. The bushing according to claim 4, characterized in that The base is provided with a slot, the slot extending along the circumferential direction of the base, the slot comprising a first area and a second area arranged in the circumferential direction of the base, and a protrusion is provided on an outer side wall of the second area away from the central axis of the base, The top cover is provided with a hook extending toward the bottom wall of the assembly groove, the hook includes a first section and a second section, one end of the first section is connected to the top cover, and the other end extends toward the bottom wall of the assembly groove, the second section is located at one end of the first section close to the bottom wall of the assembly groove and on the side of the first section away from the central axis of the top cover, the hook is suitable for entering the second area from the first area along the circumferential direction of the base, and the second section stops at the surface of the protrusion facing the bottom wall of the slot.

6. The bushing according to claim 5, characterized in that The protrusion has a matching groove on one side facing the bottom wall of the slot, and the second section has a locking protrusion matched with the matching groove.

7. The bushing according to claim 1, characterized in that The elastic member is a spring or a spring sheet.

8. A battery pack, characterized in that: include: A shell, the shell comprising a side beam plate extending along the length direction of the battery pack, the side beam plate having a mounting groove; According to the bushing according to any one of claims 1-7, at least a portion of the base is located in the mounting groove.

9. The battery pack according to claim 8, characterized in that: Therefore, there are a plurality of mounting grooves spaced apart along the length direction of the edge beam plate, and there are a plurality of bushings corresponding to the plurality of mounting grooves one by one; And / or, a limiting protrusion is provided on the outer peripheral wall of the base, and the limiting protrusion extends in a ring shape along the circumferential direction of the base, and a surface of the limiting protrusion away from the opening of the assembly groove is in contact with the side beam plate.

10. A vehicle, characterized in that: include: According to the battery pack of claim 8 or 9, the bottom wall of the mounting groove has a third mounting hole; The vehicle body is provided with a fastener which passes through the third mounting hole, the first mounting hole, the second mounting hole and the vehicle body in sequence.

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