Fastening assembly, battery pack and vehicle

Abstract

The utility model discloses a fastening assembly, a battery pack and a vehicle, the fastening assembly comprises a first part, the first part is provided with a first matching surface, the first matching surface is suitable for being contacted with a fastened piece and is at least partially attached to the contact surface of the fastened piece, and the first matching surface is obliquely arranged relative to the fastening direction. The fastening assembly can adapt to an inclined mounting surface, and has the advantages of being good in attaching state, good in sealing effect and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener installation technical field especially a kind of fastening assembly, battery pack and vehicle. BACKGROUND

[0002] In the related art, some structures with irregular, non-horizontal surfaces, when fastening the structure with other components, can cause standard fasteners to be difficult to assemble or easily result in insufficient compression between the structure and other structures, poor sealing and other defects. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a fastening assembly, which can adapt to an inclined mounting surface and has good fitting state and good sealing effect.

[0004] Another purpose of the utility model is to provide a battery pack with the above fastening assembly.

[0005] Still another purpose of the utility model is to provide a vehicle with the above fastening assembly or the above battery pack.

[0006] According to the fastening assembly of the first aspect of the utility model, the first component has a first mating surface adapted to contact the fastened component and at least partially fit the contact surface of the fastened component, and the first mating surface is inclined relative to the fastening direction.

[0007] According to the fastening assembly of the utility model, the first mating surface of the head of the first component is inclined relative to the central axis of the rod, and the second component is sleeved on the rod and has a second mating surface opposite the first mating surface. Thus, the fastening assembly can adapt to a mounting surface with an inclination angle, the first mating surface and the second mating surface can fully fit the inclined mounting surface, the installation difficulty is reduced, and when the fastening assembly is applied to a battery pack, the sealing performance and service life of the battery pack can be improved.

[0008] According to some specific embodiments of the utility model, a plane perpendicular to the fastening direction is made at the intersection of the first mating surface and the fastening direction, and the two side edges extending along the inclination direction of the first mating surface are located on the two sides of the reference plane along the fastening direction.

[0009] According to some embodiments of the utility model, the shape of the first mating surface is adapted to the shape of the contact surface of the fastened component.

[0010] According to some specific embodiments of the present application, the fastening assembly further comprises: a second component, the second component is adapted to be sleeved on the first component, the second component has a second matching surface, the second matching surface is adapted to contact with the fastened member and at least partially match with the contact surface of the fastened member, and the second matching surface is arranged to be inclined relative to the fastening direction.

[0011] According to some specific embodiments of the present application, the first component comprises a head portion and a rod portion connected to each other, the first matching surface is formed on a side surface of the head portion facing the rod portion, and / or the second matching surface is formed on a side of the second component facing the head portion.

[0012] According to some embodiments of the present application, the first matching surface and the second matching surface are formed as planes, and the inclination angles of the first matching surface and the second matching surface relative to the fastening direction are the same.

[0013] According to some embodiments of the present application, the inclination angle of the first matching surface relative to the central axis of the rod portion is α, wherein the α satisfies: 30°≤α<90°.

[0014] According to some embodiments of the present application, a side surface of the second component away from the head portion is formed as a plane and is perpendicular to the fastening direction; and / or a side surface of the head portion away from the second component is formed as a plane and is perpendicular to the fastening direction.

[0015] According to some embodiments of the present application, a through hole is formed on the first component, two ends of the through hole respectively penetrate an end surface of one end of the rod portion away from the head portion and a side surface of the head portion away from the rod portion.

[0016] According to some embodiments of the present application, the through hole comprises a first hole section and a second hole section in communication with each other, one end of the first hole section away from the second hole section penetrates the end surface of the one end of the rod portion away from the head portion, one end of the second hole section away from the first hole section penetrates the surface of the side of the head portion away from the rod portion, and the cross-sectional area of the second hole section is greater than that of the first hole section.

[0017] According to some specific embodiments of the present application, the fastening assembly further comprises: a third component, the third component is adapted to be arranged on a side of the second component away from the head portion of the first component, and the third component is connected with the rod portion of the first component.

[0018] The battery pack according to the second aspect of the present application comprises the fastening assembly according to the first aspect of the present application.

[0019] According to some embodiments of the present application, the shape of the first mating surface is adapted to the shape of the contact surface of the battery pack.

[0020] According to some embodiments of the present application, the battery pack further comprises: a tray, the edge of the tray has a tray outer edge; an upper cover, the upper cover is arranged on the top of the tray, the edge of the upper cover has an upper cover outer edge, the upper cover outer edge and the tray outer edge are opposite to each other and are both arranged to be inclined, the upper cover outer edge and the tray outer edge are connected by at least one fastening assembly, the first mating surface of the first part of the fastening assembly and the second mating surface of the second part are respectively at least partially attached to the contact surface of the upper cover outer edge and the tray outer edge.

[0021] According to the vehicle of the third aspect of the present application, the vehicle comprises the fastening assembly of the first aspect of the present application or the battery pack of the second aspect of the present application.

[0022] According to some embodiments of the present application, the vehicle comprises: the battery pack and the fastening assembly, the fastening assembly is arranged on the battery pack, the fastening assembly is formed with a through hole, the through hole is adapted to pass through a bolt to realize the connection between the battery pack and the vehicle.

[0023] Additional aspects and advantages of the present application will be given in part in the following description, some of which will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, in which:

[0025] Figure 1 is a partial view of a battery pack according to an embodiment of the present application;

[0026] Figure 2 is a cross-sectional view of a battery pack according to an embodiment of the present application;

[0027] Figure 3 is a structural schematic view of a fastening assembly according to an embodiment of the present application;

[0028] Figure 4 is an exploded view of a fastening assembly according to an embodiment of the present application;

[0029] Figure 5 is a top view of a first part of a fastening assembly according to an embodiment of the present application;

[0030] Figure 6 is a top view of a second part of a fastening assembly according to an embodiment of the present application;

[0031] Figure 7 is a top view of a third component of the fastening assembly according to an embodiment of the present application;

[0032] Figure 8 is a sectional view of a first component of the fastening assembly according to an embodiment of the present application;

[0033] Figure 9 is a sectional view of a second component of the fastening assembly according to an embodiment of the present application;

[0034] Figure 10 is a sectional view of a first component of the fastening assembly according to an embodiment of the present application.

[0035] Reference signs:

[0036] fastening assembly 1, first component 100, second component 200, third component 300,

[0037] head 110, stem 120, through hole 130, first mating surface 101, second mating surface 201,

[0038] first hole segment 131, second hole segment 132, first side surface 102, second side surface 202,

[0039] third side surface 301,

[0040] battery pack 10, upper cover outer edge 11, tray outer edge 12, sealing glue 13. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0042] In the description of the present application, it is understood that the terms "center", "upper", "lower", "front", "rear", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the present application.

[0043] In the description of the present application, "first feature", "second feature" can include one or more features.

[0044] In the description of the utility model, the meaning of "multiple" is two or more than two, and the meaning of "several" is one or more.

[0045] The fastening assembly 1 according to the embodiments of the utility model is described below with reference to the drawings.

[0046] As Figures 1-10 shown, the fastening assembly 1 according to the first aspect of the embodiments of the utility model comprises a first component 100.

[0047] The first component 100 has a first mating surface 101, which is adapted to be in contact with the fastened part and at least partially fitted with the contact surface of the fastened part, and the first mating surface 101 is arranged obliquely relative to the fastening direction. The fastening direction is the central axis direction of the first component 100 and the first component 200, that is, the first mating surface is inclined relative to the central axis direction of the first component.

[0048] The fastening assembly 1 according to the embodiments of the utility model, since the first component 100 has a first mating surface 101 inclined relative to the central axis of the first component 100, that is, the first mating surface 101 is a bevel, so that the first component 100 can be adapted to the installation surface with an inclined angle, and the inclined first mating surface 101 can better contact the installation surface, reducing the difficulty or instability caused by the inclined installation surface.

[0049] For example, in the example of Figures 1-4 , when the fastening assembly 1 is applied to the battery pack 10, the fastening assembly 1 can be arranged at the inclined installation position of the edge of the battery pack 10, and the first mating surface 101 of the first component 100 can be in abutment with the lower surface of the above-mentioned inclined installation position. Therefore, the first mating surface 101 will naturally form a surface contact with the surface of the above-mentioned inclined installation position, and with the fastening of the first component 100, the fastened part is pressed and fixed by the first mating surface 101, ensuring that the above-mentioned inclined installation position can always maintain a good sealing state under various working conditions.

[0050] In addition, the first component 100 of the fastening assembly of the application is kept in a vertical state, so that the fastening assembly 1 is within the contour line of the edge of the battery pack 10, and does not occupy the external space of the battery pack 10, thereby avoiding interference with the surrounding components and reducing the installation difficulty.

[0051] Therefore, according to the fastening assembly 1 of the embodiments of the utility model, by arranging the first mating surface 101 of the first component 100 obliquely relative to the central axis of the first component 100, the fastening assembly 1 can be adapted to the installation surface with an inclined angle, and the sealing performance of the battery pack can be improved.

[0052] In some embodiments of the utility model, the intersection of the first fitting surface 101 and the fastening direction is perpendicular to the plane of the fastening direction, and the reference surface is formed, and the two sides of the first fitting surface 101 in the inclined direction are located on the two sides of the reference surface in the fastening direction.

[0053] Specifically, the first fitting surface 101 passes through the above-mentioned plane reference surface, for example, one side of the first fitting surface 101 is located above the reference surface, and the other side is located below the reference surface, so that the first reference surface forms a surface that is inclined in the same direction as a whole, rather than a conical surface. In this way, the first fitting surface 101 can be more suitable for the inclined direction of the contact surface of the fastener, so as to be well fitted with the first fitting 101 surface.

[0054] In some embodiments of the utility model, the shape of the first fitting surface 101 is suitable for matching the shape of the contact surface of the fastener. The first fitting surface 101 and the contact surface of the fastener form a conformal surface that is fitted with each other, and the surface is closely fitted with the surface, further improving the sealing performance of the battery pack 10.

[0055] In some optional embodiments of the utility model, as shown in Figures 1-4 The fastening assembly 1 further comprises a second component 200.

[0056] The second component 200 is suitable for being sleeved on the first component 100, and the second component 200 has a second fitting surface 201, which is suitable for being contacted with the fastener and at least partially fitted with the contact surface of the fastener. The second fitting surface 201 is inclinedly arranged relative to the fastening direction, that is, the second fitting surface 201 is inclined relative to the central axis direction of the second component 200.

[0057] For example, the outer surface of the first component 100 is processed with external threads, the inner circle of the second component 200 is processed with internal threads, the first fitting surface 101 of the first component 100 is suitable for being fitted with the contact surface of one side of the fastener, and the internal threads of the inner circle of the second component 200 are used for being screwed into the external threads of the first component 100. The fastening connection is realized by the thread engagement mode, and at the same time, the position of the second fitting surface 201 of the outer circle of the second component 200 remains unchanged, and the second fitting surface 201 always maintains contact and fitting with one side of the fastener. The first component 100 can be abutted with the surface of one side of the fastener, and the second component 200 is abutted with the other side of the fastener, and the fastener can be pressed between the first component 100 and the second component 200 through the cooperation of the first component 100 and the second component 200.

[0058] The second component 200 is sleeved on the first component 100, and a side surface thereof facing the first fitting surface 101 has a second fitting surface 201. The second fitting surface 201 of the second component 200 can be closely fitted with the first fitting surface 101 of the first component 100 and the contact surfaces on both sides of the fastened part, and even if the mounting surface is inclined, the fitting surface of the fastened part and the surface of the second component 200 can be kept in a good fitting state by adjusting the second component 200.

[0059] In some optional embodiments of the present application, the first component 100 comprises a head 110 and a rod 120 connected to each other, the first fitting surface 101 is formed on a side surface of the head 110 facing the rod 120, and / or the second fitting surface 102 is formed on a side of the second component 200 facing the head 110.

[0060] By constructing the head 110 and the rod 120 of the first component 100, a structure similar to a screw rod and a nut can be formed, the first fitting surface 101 is formed on the head 110 of the first component 100, the second fitting surface 102 is formed on the surface opposite to the first fitting surface 101, the first fitting surface 101 and the second fitting surface 102 are opposite to each other, and the opposite clamping surfaces are formed on the opposite sides of the fastened part, and the stress directions on both sides of the fastened part are also opposite to each other, so that the fastened part can be clamped and fixed more easily.

[0061] In some optional embodiments of the present application, as shown in Figure 4 The first fitting surface 101 and the second fitting surface 201 are formed as planes, and the inclination angles of the first fitting surface 101 and the second fitting surface 201 with respect to the fastening direction (i.e. the direction of the central axis of the rod 120) are the same.

[0062] The plane contact can ensure that the contact pressure is uniformly distributed on the entire plane during the fastening process, avoiding stress concentration. By making the inclination angles of the first fitting surface 101 and the second fitting surface 201 the same, it can be ensured that the first fitting surface 101 and the second fitting surface 201 are always in a parallel state during the fastening process, so that a consistent contact state and pressure distribution can be maintained.

[0063] For example, when the first fitting surface 101 and the second fitting surface 201 are in contact with the upper cover outer edge 11 and the tray outer edge 12 respectively, the first fitting surface 101 and the second fitting surface 201 can better cooperate with each other when the inclination angles of the first fitting surface 101 and the second fitting surface 201 are the same, which is beneficial to tightly pressing the upper cover outer edge 11 and the tray outer edge 12 between the first fitting surface 101 and the second fitting surface 201. If the inclination angles of the first fitting surface 101 and the second fitting surface 201 are different, it may not be able to fully contact the mounting surface in some areas, affecting the sealing and fitting effect between the upper cover outer edge 11 and the tray outer edge 12.

[0064] In some embodiments of the utility model, as shown in Figure 4 The inclination angle of the first fitting surface 101 relative to the central axis of the rod portion 120 is α, wherein α satisfies: 30°≤α<90°.

[0065] The inclination angles of the first fitting surface 101 and the second fitting surface 102 can be adjusted according to the shape of the battery pack, for example, α is set to 70°, that is, the included angle between the first fitting surface 101 and the central axis of the rod portion 120 is 70°, and the included angle between the outer side of the battery pack shell and the horizontal plane is 160°. The inclination angle of 70° can provide sufficient space for the surrounding components, reducing the difficulty of installation due to space limitations. At the same time, it can be tightly connected with the battery pack 10, providing good sealing performance.

[0066] Optionally, as shown in Figure 3 and Figure 4 The side surface of the second component 200 away from the head portion 110 is formed as a plane and perpendicular to the fastening direction (i.e. the central axis direction of the rod portion 120); and / or the side surface of the head portion 110 away from the second component 200 is formed as a plane and perpendicular to the fastening direction (i.e. the central axis direction of the rod portion).

[0067] The side surface of the second component 200 away from the head portion 110 is formed as a plane and perpendicular to the central axis of the rod portion 120, and the side surface of the head portion 110 away from the second component 200 is formed as a plane and perpendicular to the central axis of the rod portion 120 (as shown in Figure 4 ); or only the side surface of the second component 200 away from the head portion 110 can be formed as a plane and perpendicular to the central axis of the rod portion 120 (not shown in the figure); or only the side surface of the head portion 110 away from the second component 200 can be formed as a plane and perpendicular to the central axis of the rod portion 120 (not shown in the figure).

[0068] In some embodiments of the utility model, as shown in Figures 3-5 A through hole 130 is formed on the first component 100, and the two ends of the through hole 130 respectively penetrate the end surface of the end of the rod portion 120 away from the head portion 110 and the surface of the side of the head portion 110 away from the rod portion 120.

[0069] Without affecting the strength and function of the first component 100, by removing unnecessary materials, the existence of the through hole 130 reduces the material consumption of the whole first component 100, thereby reducing its own weight, which is conducive to achieving lightweight design. In addition, the through hole 130 can also be suitable for inserting a positioning pin or other auxiliary installation components, which can provide additional positioning and fixing functions when connecting the battery pack 10 with the vehicle frame, thereby installing the entire battery pack 10 on the vehicle frame, ensuring the accuracy and stability of the installation.

[0070] For example, if there is a need for wiring or piping arrangement on the frame, a lock pin, steel wire or other components can be inserted through the through hole 130 to additionally lock the first component 100, prevent it from loosening or falling off during use, and enhance the reliability of the connection.

[0071] According to some specific embodiments of the present application, as shown in Figure 8 The through hole 130 includes a first hole section 131 and a second hole section 132 that are in communication with each other. The first hole section 132 penetrates the end surface of the rod portion 120 away from the head portion 110, and the second hole section 132 penetrates the surface of the head portion 110 away from the rod portion 120. The cross-sectional area of the second hole section 132 is larger than that of the first hole section 131.

[0072] The diameter of the first hole section 131 can be Φ16mm, and the diameter of the second hole section 132 can be Φ30mm. By making the cross-sectional area of the second hole section 132 larger, the machining plane can be reduced, thereby improving the machining efficiency and reducing the machining time and cost. At the same time, the larger cross-sectional area of the second hole section 132 can accommodate more surrounding components, such as nuts, washers and other connecting components, which facilitates providing more space for the surrounding components during assembly and simplifies the overall design.

[0073] In addition, the height of the second hole section 132 can be 2.5mm, which allows the overall structure to be adjusted in height in the vertical direction, facilitating docking and adaptation during assembly.

[0074] Optionally, as shown in Figure 8 The connection between the first hole section 131 and the second hole section 132 is perpendicular to the central axis of the rod portion 120.

[0075] The perpendicular connection mode allows the force acting on the fastening assembly 1 to be more evenly distributed, which helps to reduce local stress concentration and enhance the stability and carrying capacity of the overall structure. This structure can ensure the precise alignment of the components of the fastening assembly 1 during assembly, avoid poor connection or difficult installation due to improper angle, and improve the assembly quality and efficiency.

[0076] In some optional embodiments of the present application, the third component 300 is adapted to be arranged on the side of the second component 200 away from the head portion 110 of the first component 100, and the third component 100 is adapted to be connected with the rod portion 120 of the first component 100.

[0077] The first and second mating surfaces 101 and 201 will naturally form a surface contact with the upper and lower surfaces of the inclined installation position. As the third component 300 is further tightened, the load between the first and second mating surfaces 101 and 201 increases, thereby causing greater pressure between the upper and lower surfaces of the inclined installation position, ensuring that the fastening assembly 1 remains in a good sealed state.

[0078] With reference to Figure 3 and Figure 4 , the side surface of the second component 200 away from the head 110 is formed as a flat surface, and the side surface of the third component 300 towards the head 110 is also a flat surface. During the tightening of the third component 300, the flat surfaces increase the compression force of the connection, and since the flat surfaces are perpendicular to the central axis, such a structure facilitates alignment during assembly, ensuring that the fastening assembly 1 can easily enter the pre-set position, reducing installation difficulty and improving assembly efficiency.

[0079] For example, the head 110 has at least two first side surfaces 102 (as shown in Figure 4 ) opposite each other in the radial direction of the rod 120; and / or, the second component 200 has at least two second side surfaces 202 (as shown in Figure 4 ) opposite each other in the radial direction of the rod 120; and / or the third component 300 has at least two third side surfaces 301 (as shown in Figure 4 ) opposite each other in the radial direction of the rod 120.

[0080] In particular, with reference to Figure 5 , the head 110 has at least two first side surfaces 102 opposite each other in the radial direction of the rod 120. With reference to Figure 5 , the head 110 has 4 first side surfaces, and the first side surfaces 102 are flat structures that can increase the assembly efficiency of the first component 100.

[0081] In combination with Figure 6 , the second side surfaces 202 are flat structures, and the second component 200 has 2 second side surfaces 202. The second side surfaces 202 provide a clear indication of the welding position, and the welder can quickly find the specific points to be welded according to the shape and position of the second side surfaces 202 during welding, reducing the complexity of installation and welding. By providing the second side surfaces 202, the uniformity and consistency of the weld can be controlled during welding, ensuring the overall strength and structural integrity of the welded joint, and reducing the occurrence of welding defects.

[0082] As shown in Figure 7 , the first side surfaces 102 are flat structures, and the third component 300 has 6 third side surfaces 301, i.e. the third component 300 can be a standard M24 hexagonal nut.

[0083] Optionally, the thickness of the third component 300 can be 4.7mm, the aperture of the through inner hole of the second component 200 is Φ28mm, and the first component 100 is an M24 integrated bolt with a base. Figure 9 The cross section of the second component 200 is flat on the top and inclined on the bottom, the inclined angle of the second matching surface 201 is consistent with the upper surface of the upper cover outer edge 11, the first component 100 is an M24 integrated bolt with a base, and the cross section of the first component 100 shows that the cross section of the head 110 is inclined on the top and flat on the bottom, the inclined angle of the first matching surface 101 of the head 110 is consistent with the lower surface of the tray outer edge 14, and the bottom surface size of the head 110 is 34mm*34mm. The materials of the first component 100, the second component 200 and the third component 300 are all steel, and corresponding corrosion prevention processes need to be taken in actual working conditions. Of course, the specific structure, size and the like of the fastening assembly 1 can also be other forms, and are not limited to this.

[0084] The battery pack 10 according to the embodiments of the present application is described below.

[0085] In combination with Figure 1 and Figure 2 , the battery pack 10 according to the second aspect of the present application comprises the fastening assembly 1 according to the first aspect of the present application.

[0086] According to the battery pack 10 implemented by the present application, the sealing performance of the battery pack 10 is improved by using the fastening assembly 1 according to the embodiments of the present application, and the service life thereof is prolonged.

[0087] In some embodiments of the present application, as shown in Figure 1 and Figure 2 , the battery pack 10 further comprises a tray and an upper cover. The edge of the tray has a tray outer edge 12. The upper cover is arranged on the top of the tray, the edge of the upper cover has an upper cover outer edge 11, the upper cover outer edge 11 and the tray outer edge 12 are arranged opposite to each other and are both inclined, the upper cover outer edge 11 and the tray outer edge 12 are connected by at least one fastening assembly 1, and the first matching surface 101 of the first component 100 of the fastening assembly 1 and the second matching surface 201 of the second component 200 are respectively at least partially attached to the contact surfaces of the upper cover outer edge 11 and the tray outer edge 12.

[0088] For example, the edge of the tray has a tray outer edge 12, which provides basic support for the entire battery pack 10. The upper cover is located on the top of the tray, and the upper cover edge is provided with an upper cover outer edge 11. The upper cover outer edge 11 and the tray outer edge 12 are opposite to each other and are both inclined. The first matching surface 101 of the first component 100 is attached to the side surface of the upper cover outer edge 11 away from the tray, and the second matching surface 201 of the second component 200 is attached to the side surface of the tray outer edge 12 away from the upper cover. By using the third component 300 to tighten the first component 100, the upper cover outer edge 11 and the tray outer edge 12 are pressed between the first matching surface 101 and the second matching surface 201, thereby achieving firm connection of the upper cover outer edge 11 and the tray outer edge 12.

[0089] In addition, the fastening assembly 1 of the present embodiment can be suitable for the upper cover outer edge 11 and the tray outer edge 12 in a slope structure, and can also be suitable for the upper cover outer edge 11 and the tray outer edge 12 in an arc structure. The first matching surface 101 and the second matching surface 201 can be different shapes according to the different configurations of the contact surface.

[0090] The fastening assembly 1 provides strong vertical connection, which helps to improve the overall structural strength of the battery pack 10 and ensures that the battery pack 10 can remain stable when subjected to external impact or vibration, avoiding loosening or damage. At the same time, the connection method using the fastening assembly 1 makes the assembly and disassembly of the battery pack 10 more convenient, facilitating maintenance and replacement.

[0091] Optionally, as shown in Figure 1 and Figure 2 , the second component 200 is fixedly connected to one of the upper cover outer edge 11 and the tray outer edge 12. And / or the first component 100 is fixedly connected to the other of the upper cover outer edge 11 and the tray outer edge 12.

[0092] That is, if the second component 200 can be fixed to the upper cover outer edge 11 by welding, the first component 100 is fixed to the tray outer edge 12 (as shown in Figure 2 ). If the second component 200 is fixed to the tray outer edge 12 by welding, the first component 100 is fixed to the upper cover outer edge 11.

[0093] Optionally, as shown in Figure 2 , a sealant 13 is provided between the upper cover outer edge 11 and the tray outer edge 12.

[0094] For example, when the second component 200 is fixed to the upper cover outer edge 11 by welding, during assembly, the tray outer edge 12 is sprayed with sealant 13 and positioned with the upper cover, and after the sealant 13 is preliminarily cured by using the self-weight of the upper cover, the bolt is installed, at this time, the first component 100 passes through the tray outer edge 12, the sealant 13, the upper cover outer edge 11 and the second component 200 in sequence from bottom to top, and finally the third component 300 is tightened, so that the upper cover outer edge 11 presses the tray outer edge 12, and the pressing force on the sealant 13 is further increased.

[0095] In addition, the number of fastening assemblies 1 depends on the project requirements, mainly to press the sealant 13 between the upper cover and the tray, and ensure the sealing performance of the sealant 13 of the battery pack 10. The first component 100 and the third component 300 with larger nominal diameter are threadedly connected, which greatly enhances the pressing force on the upper cover and the tray, and compared with the direct vertical inclined surface connection of a single ordinary fastening assembly, the fastening assembly 1 of the embodiment increases the acting area on the upper cover outer edge 11 and the tray outer edge 12, which can make the sealant 13 more evenly distributed, and achieve the purpose of improving the sealing performance. In addition, the fastening assembly 1 of the embodiment can also change the installation of the fastening assembly 1 from the vertical inclined surface to the vertical installation, which reduces the difficulty of the installation of the first component 100 on the inclined surface.

[0096] The sealant 13 can effectively prevent the invasion of moisture and dust, protect the internal elements of the battery pack 10 from being affected by moisture and pollution, and thus improve the durability and reliability of the battery pack 10. At the same time, the adhesive layer formed by the sealant 13 between the upper cover and the tray can enhance the connection strength between the two, so that the battery pack 10 is less likely to loosen or fall off when subjected to mechanical impact or vibration.

[0097] The vehicle according to the embodiment of the utility model is described below (not shown in the figure).

[0098] The vehicle according to the embodiment of the utility model comprises the fastening assembly 1 or the battery pack 10 according to the above embodiment of the utility model.

[0099] According to the vehicle of the embodiment of the utility model, the stability and the sealing performance of the vehicle are improved by using the fastening assembly 1 or the battery pack 10 according to the above embodiment of the utility model, and the service life of the vehicle is prolonged.

[0100] In some specific embodiments of the utility model, the vehicle comprises the battery pack 10 and the fastening assembly 1, the fastening assembly 1 is arranged on the battery pack 10, the fastening assembly 1 is formed with a through hole 130, the through hole 130 is suitable for allowing the bolt to pass through, so as to realize the connection between the battery pack 10 and the vehicle.

[0101] The presence of the through hole 130 reduces the amount of material of the fastening assembly 1 as a whole by removing unnecessary material without affecting the strength and function of the fastening assembly 1, thereby reducing its own weight and being conducive to achieving lightweight design. In addition, the through hole 130 can also be adapted to insert a positioning pin or other auxiliary installation components, which can provide additional positioning and fixing functions when connecting the battery pack 10 with the vehicle frame, thereby installing the entire battery pack 10 on the vehicle frame and ensuring the accuracy and stability of the installation.

[0102] The fastening assembly 1, the battery pack 10 and other configurations and operations of the vehicle according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0103] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0104] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A fastening assembly (1) characterized in that, Comprising: A first component (100) having a first mating surface (101) adapted to contact a fastened member and at least partially conform to a contact surface of the fastened member, the first mating surface (101) being disposed obliquely with respect to a fastening direction.

2. The fastening assembly of claim 1, wherein, A plane perpendicular to the fastening direction is taken at the intersection of the first mating surface (101) and the fastening direction, and two side edges extending along the oblique direction of the first mating surface (101) are located on both sides of the reference plane along the fastening direction.

3. The fastening assembly of claim 1, wherein, The shape of the first mating surface (101) is adapted to the shape of the contact surface of the fastened member.

4. The fastening assembly according to claim 1, wherein Further comprising: A second component (200) adapted to be fitted on the first component (100), the second component (200) having a second mating surface (102) adapted to contact the fastened member and at least partially conform to the contact surface of the fastened member, the second mating surface (102) being disposed obliquely with respect to the fastening direction.

5. The fastening assembly (1) according to claim 4, characterized in that The first component (100) comprises a head portion (110) and a stem portion (120) connected to each other, the first mating surface (101) is formed on a side surface of the head portion (110) facing the stem portion (120), and / or The second mating surface (102) is formed on a side of the second component (200) facing the head portion (110).

6. The fastening assembly (1) according to claim 4, characterized in that The first mating surface (101) and the second mating surface (102) are formed as planes, and the oblique angles of the first mating surface (101) and the second mating surface (102) with respect to the fastening direction are the same.

7. The fastening assembly (1) according to claim 6, characterized in that The oblique angle of the first mating surface (101) with respect to the central axis of the stem portion (120) is α, wherein the α satisfies: 30°≤α<90°.

8. The fastening assembly (1) according to claim 5, characterized in that A side surface of the second component (200) away from the head portion (110) is formed as a plane and is perpendicular to the fastening direction; and / or A side surface of the head portion (110) away from the second component (200) is formed as a plane and is perpendicular to the fastening direction.

9. The fastening assembly (1) according to claim 5, characterized in that A through hole (130) is formed on the first component (100), and two ends of the through hole (130) respectively pass through an end surface of the stem portion (120) away from the head portion (110) and a side surface of the head portion (110) away from the stem portion (120).

10. The fastening assembly (1) according to claim 9, characterized in that The through hole (130) comprises a first hole section (131) and a second hole section (132) in communication with each other, one end of the first hole section (131) away from the second hole section (132) passes through the end surface of the stem portion (120) away from the head portion (110), one end of the second hole section (132) away from the first hole section (131) passes through the side surface of the head portion (110) away from the stem portion (120), and the cross-sectional area of the second hole section (132) is greater than that of the first hole section (131).

11. The fastening assembly (1) according to any one of claims 1-10, characterized in that Further comprising: A third component (300) adapted to be arranged on a side of the second component (200) away from the head (110) of the first component (100), the third component (300) being connected with the stem (120) of the first component (100).

12. A battery pack (10) characterized by, The fastening assembly (1) according to any one of claims 1-11.

13. The battery pack (10) of claim 12, characterized in that, The first mating surface (101) is shaped to match the shape of a contact surface of the battery pack (10).

14. The battery pack (10) of claim 12, characterized in that, Further comprising: a tray, an edge of the tray having a tray outer edge (12); an upper cover arranged on a top of the tray, an edge of the upper cover having an upper cover outer edge (11), the upper cover outer edge (11) and the tray outer edge (12) being oppositely arranged and each being inclined, the upper cover outer edge (11) and the tray outer edge (12) being connected by at least one fastening assembly (1), the first mating surface (101) of the first component (100) and the second mating surface (102) of the second component (200) of the fastening assembly (1) being at least partially fitted with a contact surface of the upper cover outer edge (11) and the tray outer edge (12) respectively.

15. A vehicle characterized by comprising: The fastening assembly (1) according to any one of claims 1-11, and / or the battery pack (10) according to any one of claims 12-13.

16. The vehicle of claim 15, wherein, The vehicle comprises the battery pack and the fastening assembly arranged on the battery pack, the fastening assembly being formed with a through hole (130) adapted to pass a bolt to achieve the connection of the battery pack with the vehicle.

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