CN220687803U - Connecting assembly, battery box, battery and electricity utilization device - Google Patents

Abstract

The application provides a coupling assembling, battery box, battery and power consumption device. The connecting assembly comprises a rivet nut and a sleeve, the rivet nut comprises a first section and a second section which are axially distributed along the rivet nut, a first through hole which axially extends is formed in the first section, and a threaded hole which axially extends is formed in the second section. At least part of the sleeve is arranged in the first through hole, the sleeve is provided with a second through hole extending along the axial direction, and the projection of the threaded hole is positioned in the projection of the second through hole in the axial direction. According to the battery protection device, the risk that foreign objects fall into the connecting assembly can be effectively reduced, and the reliability of the battery is further improved.

Description

Connecting assembly, battery box, battery and electricity utilization device

Technical Field

The application relates to the technical field of batteries, in particular to a connecting component, a battery box body, a battery and an electric device.

Background

With the development of new energy technology, the battery is increasingly widely applied, for example, to mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric toy automobiles, electric toy ships, electric toy airplanes, electric tools and the like.

In the battery, a connection assembly (e.g., a press-rivet nut or a rivet nut, etc.) needs to be pre-installed on the battery case to facilitate the assembly between the external connection member and the battery case. In the assembly process of the external part and the battery box body, part of parts on the external part easily fall into the connecting assembly, so that the reliability of the battery is affected. Therefore, how to effectively reduce the risk of foreign objects falling into the connecting assembly is a problem in battery technology.

Disclosure of Invention

In view of the above-mentioned problem, the application provides a coupling assembling, battery box, battery and power consumption device, can effectively reduce the foreign object and drop the inside risk of coupling assembling, and then improve the reliability of battery.

In a first aspect, the embodiment of the application provides a coupling assembling, coupling assembling is including drawing rivet nut and sleeve, draws rivet nut and includes along self axial distribution's first section and second section, and first section is inside to be equipped with along axial extension's first through-hole, and second section is inside to be equipped with along axial extension's screw hole. At least part of the sleeve is arranged in the first through hole, the sleeve is provided with a second through hole extending along the axial direction, and the projection of the threaded hole is positioned in the projection of the second through hole in the axial direction.

According to the technical scheme, the sleeve is arranged, the radial size of the second through hole is smaller than that of the first through hole due to the fact that the sleeve is provided with the certain wall thickness, therefore, the sleeve in the first through hole can fill a part of inner space of the first section of the rivet nut, so that the inner diameter of the connecting component at the position corresponding to the first section is reduced, the risk that part of parts on the external component fall into the connecting component in the assembling process of the external component and the battery box body can be reduced, and the reliability of the battery is improved.

In some embodiments of the first aspect, the blind rivet nut further comprises a first flange encircling the outside of the first segment. The sleeve comprises a main body part and a second flange, wherein the second through hole is formed in the main body part, at least part of the main body part is arranged in the first through hole, and the second flange surrounds the outer side of the main body part and is in axial abutting connection with the first flange.

According to the technical scheme, the first flange is abutted with the second flange, so that the contact area between the sleeve and the rivet nut can be increased, the stability between the sleeve and the rivet nut is improved, and the overall reliability of the connecting assembly is improved.

In some embodiments of the first aspect, the sleeve further comprises a boss protruding from a side surface of the second flange facing away from the first flange.

Above-mentioned technical scheme is through setting up the boss, on the one hand, and the boss can fill the part inner space of connecting hole to can further reduce the part spare part on the external part and drop to the inside risk of coupling assembling. On the other hand, the boss can also play a supporting role on the external part to replace a part of supporting pieces arranged in the connecting holes of the external part, thereby being beneficial to reducing the cost.

In some embodiments of the first aspect, the boss extends circumferentially of the sleeve and surrounds the second through hole.

The risk that part spare part on the reduction external part of boss drops to coupling assembling inside and reduce cost's effect can be further strengthened.

In some embodiments of the first aspect, a side of the first flange adjacent to the second flange is provided with a first mating portion, a side of the second flange adjacent to the first flange is provided with a second mating portion, one of the first mating portion and the second mating portion includes a first protrusion, the other of the first mating portion and the second mating portion includes a first recess, and at least a portion of the first protrusion is received in the first recess.

According to the technical scheme, through the arrangement of the first matching part and the second matching part, the first matching part and the second matching part are clamped and matched to limit the relative rotation between the sleeve and the rivet nut along the circumferential direction of the rivet nut, so that the reliability of the connecting assembly can be improved.

In some embodiments of the first aspect, the first mating portion and the second mating portion are each disposed along a radial extension of the blind rivet nut.

The effect of the first fitting portion and the second fitting portion that restrict relative rotation between the sleeve and the blind rivet nut in the circumferential direction of the blind rivet nut can be further improved, and thus the reliability of the connection assembly can be further improved.

In some embodiments of the first aspect, the first flange is provided with an anti-slip layer on a side thereof adjacent to the second flange; and/or one side of the second flange close to the first flange is provided with an anti-slip layer.

The friction coefficient between the first flange and the second flange can be improved, and therefore the risk of relative rotation between the sleeve and the blind rivet nut along the circumferential direction of the blind rivet nut can be reduced.

In some embodiments of the first aspect, the first flange is bonded to the second flange.

Through bonding first flange and second flange, can improve the sleeve and draw the reliability of being connected between the riveting nut, also can reduce sleeve and draw the riveting nut and produce relative rotation's risk along drawing the riveting nut circumference to can improve coupling assembling's reliability.

In some embodiments of the first aspect, the outer wall of the sleeve is provided with a third mating portion, the inner wall of the first section is provided with a fourth mating portion, one of the third mating portion and the fourth mating portion comprises a second protrusion, the other of the third mating portion and the fourth mating portion comprises a second recess, and at least part of the second protrusion is accommodated in the second recess.

According to the technical scheme, the third matching part and the fourth matching part are arranged, and the third matching part and the fourth matching part are clamped and matched to limit relative rotation between the sleeve and the rivet nut along the circumferential direction of the rivet nut, so that the reliability of the connecting assembly can be improved.

In some embodiments of the first aspect, the third mating portion and the fourth mating portion are each disposed extending in an axial direction.

The effect of restricting the relative rotation between the sleeve and the blind rivet nut in the circumferential direction of the blind rivet nut by the third fitting portion and the fourth fitting portion can be further improved, and the reliability of the connecting assembly can be further improved.

In some embodiments of the first aspect, the projection shape of the inner wall of the first section in the axial direction and the projection shape of the outer wall of the sleeve in the axial direction are both polygonal.

Above-mentioned technical scheme is through all setting up the inner wall of first section and telescopic outer wall into the polygon, also can reduce sleeve and draw the relative pivoted risk of riveting nut production along drawing in the nut circumference under the circumstances that does not set up other limit structure, simple structure is favorable to reducing coupling assembling's preparation degree of difficulty and reduce cost.

In some embodiments of the first aspect, the threaded bore extends axially through the second section.

According to the technical scheme, the threaded hole is formed through the second section along the axial direction, so that the rivet nut can be riveted in a more mode, and the applicability of the connecting assembly can be improved.

In some embodiments of the first aspect, the connection assembly further comprises a seal disposed between the blind rivet nut and the sleeve.

According to the technical scheme, the sealing piece is arranged, so that the sealing performance between the sleeve and the rivet nut can be effectively improved, and the reliability of the whole connecting assembly can be improved.

In some embodiments of the first aspect, the sleeve is an interference fit with the first section. The sleeve and the first section are higher in connection firmness, the risk of relative movement of the sleeve and the rivet nut along the axial direction of the rivet nut can be reduced, and accordingly the overall reliability of the connecting assembly can be improved.

In some embodiments of the first aspect, the outer wall of the first section is provided with a relief structure comprising a plurality of concave structures and a plurality of convex structures, the plurality of concave structures and the plurality of convex structures being alternately distributed along the circumferential direction of the first section.

The concave-convex structure can improve the friction coefficient between the limiting structure formed by the outward bulge of the first section under the action of external force and the wall part of the battery box body, and then can improve the connection firmness between the rivet nut and the wall part of the battery box body, thereby improving the reliability of the connecting assembly.

In a second aspect, the present application provides a battery box, having being used for holding the single chamber that holds of battery, the battery box includes wall portion and the coupling assembling that any embodiment of first aspect provided, has seted up the mounting hole on the wall portion, and the mounting hole runs through the wall portion along the thickness direction of wall portion, draws the riveting nut to wear to locate the mounting hole and rivet in the wall portion.

Above-mentioned technical scheme can make things convenient for the assembly between external part and the battery box through setting up coupling assembling on the wall portion of battery box to the sleeve can reduce the part spare part on the external part and drop the inside risk of coupling assembling, thereby improves the reliability of battery.

In some embodiments of the second aspect, the wall portion is provided with a recess, the recess is recessed with respect to a surface of a side of the wall portion facing away from the battery cell, the mounting hole is located in the recess, and at least part of the sleeve is received in the recess.

The groove is formed in the wall part, so that the size of the protruding wall part of the sleeve can be reduced, the flatness of the surface of the wall part, which is opposite to the battery cell, can be improved, on one hand, the volume of the battery box body can be reduced, and the energy density of the battery can be improved; on the other hand, the battery box body is beneficial to improving the integrity and the aesthetic degree of the battery box body.

In some embodiments of the second aspect, the battery case further includes a backing plate, a third through hole is formed in the backing plate, the backing plate is connected to a side of the wall portion facing away from the battery cell, and at least a portion of the sleeve is located in the third through hole.

According to the technical scheme, the base plate is arranged, and at least part of the sleeve is positioned in the third through hole, so that on one hand, the overall structural strength of the battery box body can be improved; on the other hand, the size of the protruding wall part of the sleeve can be reduced, so that the flatness of the surface of the wall part, which is opposite to the battery cell, is improved, and the integrity and the aesthetic degree of the battery box body are improved.

In a third aspect, the present application provides a battery, the battery including a battery cell and a battery case provided in any one of the embodiments of the second aspect, the battery cell being accommodated in the battery case.

In some embodiments of the third aspect, the battery further comprises an external member connected to the wall portion, the external member having a connection hole, and a fastener passing through the connection hole and connected to the blind rivet nut.

In some embodiments of the third aspect, the external connection component includes a plate body and a bushing, the connection hole is disposed on the plate body, the bushing is provided with a fourth through hole extending along an axial direction of the bushing, and the bushing is disposed on the connection hole and abuts against the sleeve.

The bush butt is in the sleeve, and the sleeve can form the supporting role to the bush to reduce the bush and drop to the inside risk of coupling assembling, improve the holistic reliability of battery.

In some embodiments of the third aspect, the stiffness of the plate body is less than the stiffness of the wall portion.

In a fourth aspect, the present application provides an electrical device comprising a battery provided in any one of the embodiments of the third aspect, the battery being for providing electrical energy.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

Fig. 2 is a schematic view of an exploded structure of a battery according to some embodiments of the present application;

fig. 3 is a schematic structural view of a battery module according to some embodiments of the present disclosure;

FIG. 4 is a schematic view of an exploded view of a connection assembly according to some embodiments of the present application;

FIG. 5 is a schematic cross-sectional view of a connecting assembly according to some embodiments of the present disclosure;

FIG. 6 is a schematic structural view of a sleeve of another connection assembly according to some embodiments of the present application;

FIG. 7 is a schematic cross-sectional view of another connection assembly according to some embodiments of the present application;

FIG. 8 is a schematic cross-sectional view of another connection assembly according to some embodiments of the present disclosure;

FIG. 9 is a schematic cross-sectional view of a further connection assembly according to some embodiments of the present application;

FIG. 10 is a schematic cross-sectional view of a further connection assembly according to some embodiments of the present application;

FIG. 11 is a schematic structural view of yet another connection assembly according to some embodiments of the present application;

fig. 12 is a schematic structural diagram of a battery case according to some embodiments of the present disclosure;

fig. 13 is a schematic structural view of another battery case according to some embodiments of the present application.

Reference numerals in the specific embodiments are as follows:

1. a vehicle; 2. a battery; 3. a controller; 4. a motor; 5. a case; 5a, a first box body part; 5b, a second box body part; 5c, an accommodating space; 51. a wall portion; 511. a mounting hole; 512. a groove; 52. a backing plate; 521. a third through hole; 6. a battery module; 7. a battery cell; 8. an external connection component; 81. a connection hole; 82. a plate body; 83. a bushing; 831. a fourth through hole; 9. a fastener;

100. a connection assembly; 10. pulling and riveting a nut; 11. a first section; 111. a first through hole; 112. a fourth mating portion; 12. a second section; 121. a threaded hole; 13. a first flange; 131. a first mating portion; 20. a sleeve; 21. a second through hole; 22. a main body portion; 221. a third mating portion; 23. a second flange; 231. a second mating portion; 24. a boss; 30. an anti-slip layer; 40. a seal; 50. a concave-convex structure;

x, axial direction; y, radial direction; z, circumferential direction.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

In the embodiments of the present application, the same reference numerals denote the same components, and in the interest of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the present application, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are illustrative only and should not be construed as limiting the present application in any way.

The term "plurality" as used herein refers to more than two (including two).

The term "parallel" in this application includes not only the case of absolute parallelism, but also the case of substantially parallelism as is conventionally recognized in engineering; meanwhile, "vertical" includes not only the case of absolute vertical but also the case of substantially vertical as conventionally recognized in engineering.

In the present application, the battery cells may include lithium ion secondary battery cells, lithium ion primary battery cells, lithium sulfur battery cells, sodium lithium ion battery cells, sodium ion battery cells, or magnesium ion battery cells, and the embodiment of the present application is not limited thereto. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as the embodiments herein are not limited in this regard.

The battery referred to in embodiments of the present application may include one or more battery cells to provide a single physical module of higher voltage and capacity. When a plurality of battery cells are provided, the plurality of battery cells are connected in series, in parallel or in series-parallel through the converging component.

In some embodiments, the battery may be a battery module; when a plurality of battery cells are provided, the plurality of battery cells are arranged and fixed to form a battery module.

In some embodiments, the battery may be a battery pack including a case and a battery cell, the battery cell or battery module being housed in the case.

In some embodiments, the tank may be part of the chassis structure of the vehicle. For example, a portion of the tank may become at least a portion of the floor of the vehicle, or a portion of the tank may become at least a portion of the cross member and the side member of the vehicle.

In some embodiments, the battery may be an energy storage device. The energy storage device comprises an energy storage container, an energy storage electric cabinet and the like.

With the development of new energy technology, the battery is increasingly widely applied, for example, to mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric toy automobiles, electric toy ships, electric toy airplanes, electric tools and the like.

In the battery, a connection assembly (e.g., a press-rivet nut or a rivet nut, etc.) needs to be pre-installed on the battery case to facilitate the assembly between the external connection member and the battery case. In the assembly process of the external part and the battery box body, part of parts on the external part easily fall into the connecting assembly, so that the reliability of the battery is affected.

Based on above considerations, this application has designed a coupling assembling, and coupling assembling is including drawing rivet nut and sleeve, draws rivet nut including along self axial distribution's first section and second section, and first section is inside to be equipped with along axial extension's first through-hole, and second section is inside to be equipped with along axial extension's screw hole. At least part of the sleeve is arranged in the first through hole, the sleeve is provided with a second through hole extending along the axial direction, and the projection of the threaded hole is positioned in the projection of the second through hole in the axial direction.

Because the sleeve self has certain wall thickness, the radial dimension of second through-hole is less than the radial dimension of first through-hole, consequently, the sleeve that is located in first through-hole can fill the inside space of a part of first section of rivet nut to reduce coupling assembling's internal diameter in the corresponding position department with first section, thereby in the assembly process of external part and battery box, can reduce the part spare part on the external part and drop to coupling assembling inside risk, and then improve the reliability of battery.

The technical scheme described in the embodiment of the application is applicable to batteries and power utilization devices using the batteries.

The electric device may be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, or the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the application does not limit the electric device in particular.

It should be understood that the technical solutions described in the embodiments of the present application are not limited to the above-described battery and electric device, but may be applied to all the battery including the battery case and the electric device using the battery, but for simplicity of description, the following embodiments are all described by taking an electric vehicle as an example.

Fig. 1 is a schematic structural diagram of a vehicle according to some embodiments of the present application.

With continued reference to fig. 1, the interior of the vehicle 1 is provided with a battery 2, and the battery 2 may be provided at the bottom or at the head or tail of the vehicle 1. The battery 2 may be used for power supply of the vehicle 1, for example, the battery 2 may serve as an operating power source of the vehicle 1.

The vehicle 1 may further comprise a controller 3 and a motor 4, the controller 3 being arranged to control the battery 2 to power the motor 4, for example for operating power requirements during start-up, navigation and driving of the vehicle 1.

In some embodiments of the present application, the battery 2 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, providing driving power for the vehicle 1 instead of or in part instead of fuel oil or natural gas.

Fig. 2 is an exploded view of a battery provided in some embodiments of the present application.

With continued reference to fig. 2, the battery 2 includes a case 5 and a battery cell housed in the case 5.

The case 5 is used to accommodate the battery cells, and the case 5 may have various structures. In some embodiments, the case 5 may include a first case portion 5a and a second case portion 5b, the first case portion 5a and the second case portion 5b being overlapped with each other, the first case portion 5a and the second case portion 5b together defining an accommodating space 5c for accommodating the battery cell. The second housing part 5b may be a hollow structure with one end perforated, the first housing part 5a is a plate-shaped structure, and the first housing part 5a covers the perforated side of the second housing part 5b to form a housing 5 having a receiving space 5 c; the first housing part 5a and the second housing part 5b may each have a hollow structure with a hole formed in one side, and the hole side of the first housing part 5a is closed to the hole side of the second housing part 5b to form the housing 5 having the accommodation space 5c. Of course, the first and second case portions 5a and 5b may be of various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In order to improve the sealing property after the first casing part 5a and the second casing part 5b are connected, a sealing member, such as a sealant, a seal ring, or the like, may be provided between the first casing part 5a and the second casing part 5 b.

Assuming that the first housing part 5a is covered on top of the second housing part 5b, the first housing part 5a may also be referred to as an upper case cover, and the second housing part 5b may also be referred to as a lower case.

In the battery 2, the number of battery cells may be one or more. If the number of the battery cells is multiple, the multiple battery cells can be connected in series or in parallel or in series-parallel connection, and the series-parallel connection means that the multiple battery cells are connected in series or in parallel. The plurality of battery monomers can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery monomers is accommodated in the box body 5; of course, a plurality of battery units may be connected in series or parallel or in series to form the battery module 6, and then the plurality of battery modules 6 may be connected in series or parallel or in series to form a whole and be accommodated in the case 5.

Fig. 3 is a schematic structural diagram of a battery module according to some embodiments of the present application.

In some embodiments, with continued reference to fig. 3, the plurality of battery cells 7 are provided, and the plurality of battery cells 7 are first connected in series or in parallel or in series-parallel to form the battery module 6. The plurality of battery modules 6 are connected in series, in parallel or in series-parallel to form a whole, and are accommodated in a case.

The plurality of battery cells 7 in the battery module 6 may be electrically connected through a bus bar member to realize parallel connection or series-parallel connection of the plurality of battery cells 7 in the battery module 6.

Fig. 4 is an exploded view of a connection assembly according to some embodiments of the present application, and fig. 5 is a cross-sectional view of a connection assembly according to some embodiments of the present application.

With continued reference to fig. 4 to 5, the embodiment of the present application provides a connection assembly 100, where the connection assembly 100 includes a blind rivet nut 10 and a sleeve 20, the blind rivet nut 10 includes a first section 11 and a second section 12 distributed along an axial direction X thereof, a first through hole 111 extending along the axial direction X is provided inside the first section 11, and a threaded hole 121 extending along the axial direction X is provided inside the second section 12. At least part of the sleeve 20 is disposed in the first through hole 111, and the sleeve 20 is provided with a second through hole 21 extending in the axial direction X in which the projection of the screw hole 121 is located in the projection of the second through hole 21.

Illustratively, in connection with fig. 2, during the rivet process of the blind rivet nut 10, after the screw head of the blind rivet gun is screwed into the threaded hole 121 of the second section 12, a pulling force is applied to the blind rivet nut 10, and the first section 11 can protrude outwards under the action of an external force and form a limiting structure, which can fix the blind rivet nut 10 on the target mounting member. As an example, the target mounting member may be a wall 51 of the battery case 5, the wall 51 of the battery case 5 is provided with a mounting hole 511, the rivet nut 10 is inserted into the mounting hole 511, and the limiting structure can fix the rivet nut 10 on the wall 51 of the battery case 5. In order to describe the embodiment of the present application more clearly, the wall 51 of the case 5 in which the target mount is a battery will be described hereinafter as an example.

Alternatively, the blind rivet nut 10 may be, but is not limited to being, made of a metallic material such as copper, copper alloy, aluminum alloy, nickel alloy, titanium alloy, or stainless steel.

At least a portion of the sleeve 20 is disposed within the first through hole 111, as one example, the sleeve 20 is entirely disposed within the first through hole 111; as another example, a portion of the sleeve 20 is located within the first through hole 111 and another portion is located outside the first through hole 111. In the axial direction X, the projection of the threaded bore 121 is located within the projection of the second through bore 21 to reduce the effect of the sleeve 20 on the threading of the head of the hand riveter into the threaded bore 121 of the second section 12.

Alternatively, the sleeve 20 may be detachably disposed in the first through hole 111, or may be fixedly connected to the blind rivet nut 10. In the case where the sleeve 20 is fixedly connected to the blind rivet nut 10, the sleeve 20 may be directly connected to the blind rivet nut 10 or may be restricted to the blind rivet nut 10 by other means. As an example, the sleeve 20 and the blind rivet nut 10 may be connected by, but not limited to, bolting, welding, riveting, clamping, bonding, etc.

Alternatively, the sleeve 20 may be, but is not limited to being, made of a metal or a non-metal material, for example, copper alloy, aluminum alloy, nickel alloy, titanium alloy, or stainless steel, etc., and the non-metal material may be polyethylene, polypropylene, polyvinyl chloride, or wood, etc. As an example, the sleeve 20 and the blind rivet nut 10 may be made of the same material to simplify the manufacturing process and facilitate cost reduction.

According to the technical scheme, the sleeve 20 is arranged, since the sleeve 20 has a certain wall thickness, the radial Y dimension of the second through hole 21 is smaller than the radial Y dimension of the first through hole 111, and therefore, the sleeve 20 positioned in the first through hole 111 can fill a part of the inner space of the first section 11 of the rivet nut 10, so that the inner diameter of the connecting assembly 100 at the position corresponding to the first section 11 is reduced, and the risk that part of parts on the external part 8 fall into the connecting assembly 100 in the assembling process of the external part 8 and the battery box 5 can be reduced, and the reliability of the battery 2 is improved.

In some embodiments, the blind rivet nut 10 further includes a first flange 13, the first flange 13 encircling the outside of the first segment 11. The sleeve 20 includes a main body 22, and a second flange 23, the second through hole 21 is provided in the main body 22, at least a part of the main body 22 is provided in the first through hole 111, and the second flange 23 is wound around the outside of the main body 22 and abuts against the first flange 13 in the axial direction X.

The first flange 13 may, for example, be an end portion provided at the first section 11 remote from the second section 12. During the process of riveting the blind rivet nut 10, after the thread head of the blind rivet gun is screwed into the threaded hole 121 of the second section 12, a tensile force is applied to the blind rivet nut 10, the first section 11 can protrude outwards under the action of external force and form a limiting structure, and the limiting structure and the first flange 13 jointly fix the blind rivet nut 10 on a target mounting piece. As an example, the target mounting member may be a wall 51 of the battery case 5, where the wall 51 of the battery case 5 is provided with a mounting hole 511, and the blind rivet nut 10 is inserted into the mounting hole 511, and the limiting structure and the first flange 13 clamp the wall 51 so that the blind rivet nut 10 is fixed on the wall 51 of the battery case 5.

Alternatively, the first flange 13 may be detachably connected to the first section 11, or may be integrally provided on the first section 11. The first flange 13 may be directly connected to the first section 11 or may be constrained to the first section 11 by other means. As an example, the first flange 13 and the first segment 11 may be connected by, but not limited to, bolting, welding, riveting, clamping, bonding, etc.

Alternatively, the first flange 13 and the first segment 11 may be of an integrally formed construction. On the one hand, the first flange 13 and the first section 11 do not need to be connected through an additional connecting process, so that the manufacturing process flow is simplified. Meanwhile, compared with the first flange 13 and the first section 11 which are connected through an additional connecting process, the first flange 13 and the first section 11 which are in an integrated structure have higher connection firmness.

The second flange 23 may be an end portion provided in the axial direction X of the main body portion 22, for example. The second flange 23 abuts against the first flange 13, so that the contact area between the sleeve 20 and the blind rivet nut 10 can be increased, and the stability between the sleeve 20 and the blind rivet nut 10 can be improved.

Alternatively, the second flange 23 may be detachably connected to the main body 22, or may be integrally provided on the main body 22. The second flange 23 may be directly connected to the main body 22 or may be limited to the main body 22 by other means. As an example, the second flange 23 and the main body 22 may be connected by, but not limited to, bolting, welding, riveting, clamping, bonding, or the like.

Alternatively, the second flange 23 and the main body portion 22 may be an integrally formed structure. On the one hand, the second flange 23 and the main body 22 are not required to be connected through an additional connecting process, so that the manufacturing process flow is simplified. Meanwhile, compared with the connection of the second flange 23 and the main body 22 through an additional connection process, the second flange 23 and the main body 22 which are in an integrated structure have higher connection firmness.

Alternatively, both the first flange 13 and the second flange 23 may be, but are not limited to, made of a metal or a non-metal material, for example, the metal material may be copper, copper alloy, aluminum alloy, nickel alloy, titanium alloy, or stainless steel, etc., and the non-metal material may be polyethylene, polypropylene, polyvinyl chloride, or wood, etc.

The first flange 13 and the second flange 23 in the above technical solution are abutted against each other, so that the contact area between the sleeve 20 and the blind rivet nut 10 can be increased, thereby improving the stability between the sleeve 20 and the blind rivet nut 10, and being beneficial to improving the overall reliability of the connecting assembly 100.

Fig. 6 is a schematic structural view of a sleeve 20 of another connection assembly 100 according to some embodiments of the present application.

With continued reference to fig. 6, in some embodiments, the sleeve 20 further includes a boss 24, the boss 24 protruding from a side surface of the second flange 23 facing away from the first flange 13.

Illustratively, the external component 8 is provided with a connecting hole 81, and a fastener 9 is typically used to pass through the connecting hole 81 and connect with the blind rivet nut 10 to secure the external component 8 to the battery case 5. In the assembly process of the external connection part 8 and the box body 5 of the battery, the boss 24 on the sleeve 20 can extend into the connecting hole 81, and the boss 24 can fill a part of the inner space of the connecting hole 81, so that the risk that part of the parts on the external connection part 8 fall into the connecting assembly 100 can be further reduced.

In some examples, a support is also generally arranged in the connecting hole 81 of the external connection part 8, and in the process that the fastener 9 passes through the connecting hole 81 and is connected and fastened with the rivet nut 10, the support can play a role in supporting a certain degree, so that a part of stress from the fastener 9, which is received by the external connection part 8, is shared, and the risk that the external connection part 8 is crushed by the fastener 9 is reduced. With the connection assembly 100 in the embodiment of the present application, the boss 24 extends into the connection hole 81, so as to play a role of the above-mentioned support, and thus the risk that the external connection component 8 is broken by the fastener 9 can be reduced without using the support. Thus, the above technical solution can also replace the above supporting member by providing the boss 24, which is beneficial to reducing the cost.

Alternatively, the boss 24 may be detachably connected to the second flange 23, or may be integrally provided on the second flange 23. The boss 24 may be directly connected to the second flange 23 or may be restrained to the second flange 23 by other means. As an example, the boss 24 and the second flange 23 may be connected by, but not limited to, bolting, welding, riveting, clamping, bonding, or the like.

Alternatively, the boss 24 and the second flange 23 may be an integrally formed structure. On the one hand, the boss 24 and the second flange 23 are not required to be connected through an additional connecting process, so that the manufacturing process flow is simplified. Meanwhile, compared with the connection of the boss 24 and the second flange 23 through an additional connection process, the boss 24 and the second flange 23 which are in an integrated structure have higher connection firmness.

The boss 24 is disposed in a plurality of ways, and as an example, the projection of the boss 24 is located within the projection of the main body 22 in the axial direction X; as another example, the projection of the boss 24 is located within the projection of the second flange 23 in the axial direction X; as yet another example, in the axial direction X, the projection of a part of the boss 24 is located within the projection of the main body portion 22, and the projection of another part of the boss 24 is located within the projection of the second flange 23.

Alternatively, the boss 24 may be, but is not limited to being, made of a metal or a non-metal material, for example, copper alloy, aluminum alloy, nickel alloy, titanium alloy, or stainless steel, etc., and the non-metal material may be polyethylene, polypropylene, polyvinyl chloride, or wood, etc.

According to the technical scheme, the boss 24 is arranged, so that on one hand, the boss 24 can fill part of the inner space of the connecting hole 81, and therefore the risk that part of parts on the external connection part 8 fall into the connecting assembly 100 can be further reduced. On the other hand, the boss 24 can also play a supporting role on the external connection member 8, so as to replace a supporting member partially disposed in the connection hole 81 of the external connection member 8, which is advantageous in reducing the cost.

In some embodiments, the boss 24 extends along the circumferential direction Z of the sleeve 20 and surrounds the second through hole 21. The effect of the boss 24 of reducing the risk of parts of the external component 8 falling into the connecting assembly 100 and reducing the cost can be further enhanced.

Fig. 7 is a schematic cross-sectional structure of another connection assembly 100 according to some embodiments of the present application.

With continued reference to fig. 7, in some embodiments, a side of the first flange 13 adjacent to the second flange 23 is provided with a first mating portion 131, a side of the second flange 23 adjacent to the first flange 13 is provided with a second mating portion 231, one of the first mating portion 131 and the second mating portion 231 includes a first protrusion, and the other of the first mating portion 131 and the second mating portion 231 includes a first recess, at least a portion of the first protrusion being received in the first recess.

Illustratively, the first and second mating portions 131, 231 are snap-fit for limiting relative rotation between the sleeve 20 and the blind rivet nut 10 in the circumferential direction Z of the blind rivet nut 10. As one example, the first fitting portion 131 includes a first convex portion protruding from a side surface of the first flange 13 near the second flange 23, and the second fitting portion 231 includes a first concave portion recessed with respect to a side surface of the second flange 23 near the first flange 13; as another example, the first fitting portion 131 includes a first concave portion, and the second fitting portion 231 includes a first convex portion, the first concave portion being recessed with respect to a side surface of the first flange 13 near the second flange 23. The first protrusion protrudes from a side surface of the second flange 23 close to the first flange 13.

Alternatively, the number of the first and second fitting parts 131 and 231 may be one or more, and the number of the first and second fitting parts 131 and 231 may be matched. As an example, in the case where the number of the first fitting portions 131 and the second fitting portions 231 is plural, the plural first fitting portions 131 are disposed at intervals along the circumferential direction Z of the first flange 13, and the plural second fitting portions 231 are disposed at intervals along the circumferential direction Z of the second flange 23.

According to the technical scheme, the first matching part 131 and the second matching part 231 are arranged, and the first matching part 131 and the second matching part 231 are clamped and matched to limit the relative rotation between the sleeve 20 and the blind rivet nut 10 along the circumferential direction Z of the blind rivet nut 10, so that the reliability of the connecting assembly 100 can be improved.

In some embodiments, the first mating portion 131 and the second mating portion 231 are each disposed extending along the radial direction Y of the blind rivet nut 10. The effect of restricting the relative rotation between the sleeve 20 and the blind rivet nut 10 in the circumferential direction Z of the blind rivet nut 10 by the first and second engaging portions 131 and 231 can be further improved, so that the reliability of the connection assembly 100 can be further improved.

Fig. 8 is a schematic cross-sectional structure of another connection assembly 100 according to some embodiments of the present disclosure.

With continued reference to fig. 8, in some embodiments, the side of the first flange 13 adjacent to the second flange 23 is provided with an anti-slip layer 30.

Illustratively, the anti-slip layer 30 is located between the first flange 13 and the second flange 23, which can increase the coefficient of friction between the first flange 13 and the second flange 23, thereby reducing the risk of relative rotation of the sleeve 20 and the blind rivet nut 10 in the circumferential direction Z of the blind rivet nut 10.

Alternatively, the anti-slip layer 30 may be an anti-slip pad made of an anti-slip material, which is attached to a side surface of the first flange 13 adjacent to the second flange 23, and the anti-slip layer 30 may be a rugged granular structure layer formed on a side surface of the first flange 13 adjacent to the second flange 23.

In some alternative embodiments, the side of the second flange 23 adjacent to the first flange 13 may also be provided with an anti-slip layer 30, which is not described herein for brevity.

In some embodiments, the first flange 13 is bonded to the second flange 23. By bonding the first flange 13 and the second flange 23, the connection reliability between the sleeve 20 and the blind rivet nut 10 can be improved, and the risk of relative rotation between the sleeve 20 and the blind rivet nut 10 in the circumferential direction Z of the blind rivet nut 10 can be reduced, so that the reliability of the connection assembly 100 can be improved.

Fig. 9 is a schematic cross-sectional structure of another connection assembly 100 according to some embodiments of the present disclosure.

With continued reference to fig. 9, in some embodiments, the outer wall of the sleeve 20 is provided with a third mating portion 221 and the inner wall of the first section 11 is provided with a fourth mating portion 112, one of the third mating portion 221 and the fourth mating portion 112 comprising a second protrusion and the other of the third mating portion 221 and the fourth mating portion 112 comprising a second recess.

Illustratively, the third and fourth mating portions 221, 112 are snap-fit for limiting relative rotation between the sleeve 20 and the blind rivet nut 10 in the circumferential direction Z of the blind rivet nut 10. As an example, the third fitting portion 221 includes a second convex portion protruding from the outer wall surface of the sleeve 20, and the fourth fitting portion 112 includes a second concave portion recessed with respect to the inner wall surface of the first segment 11; as another example, the third fitting portion 221 includes a second concave portion, and the fourth fitting portion 112 includes a second convex portion, the second concave portion being recessed with respect to the outer wall surface of the sleeve 20. The second protruding portion protrudes from the inner wall surface of the first segment 11.

Alternatively, the number of the third fitting part 221 and the fourth fitting part 112 may be one or more, and the number of the third fitting part 221 and the fourth fitting part 112 may be matched. As an example, in the case where the number of the third fitting portions 221 and the fourth fitting portions 112 is plural, the plural third fitting portions 221 are provided at intervals along the circumferential direction Z of the sleeve 20, and the plural fourth fitting portions 112 are provided at intervals along the circumferential direction Z of the first segment 11.

By arranging the third matching part 221 and the fourth matching part 112, the third matching part 221 and the fourth matching part 112 can be clamped and matched to limit the relative rotation between the sleeve 20 and the blind rivet nut 10 along the circumferential direction Z of the blind rivet nut 10, so that the reliability of the connecting assembly 100 can be improved.

In some embodiments, the third mating portion 221 and the fourth mating portion 112 are each disposed extending along the axial direction X. The effect of restricting the relative rotation between the sleeve 20 and the blind rivet nut 10 in the circumferential direction Z of the blind rivet nut 10 by the third fitting portion 221 and the fourth fitting portion 112 can be further improved, so that the reliability of the connection assembly 100 can be further improved.

In some embodiments, the projection shape of the inner wall of the first segment 11 along the axial direction X and the projection shape of the outer wall of the sleeve 20 along the axial direction X are polygonal.

Illustratively, the polygon may be, but is not limited to, a triangle, a quadrangle, a pentagon, a hexagon, etc., and may be selected according to the practical application environment.

According to the technical scheme, the inner wall of the first section 11 and the outer wall of the sleeve 20 are both polygonal, so that the risk of relative rotation between the sleeve 20 and the rivet nut 10 along the circumferential direction Z of the rivet nut 10 can be reduced under the condition that other limiting structures are not arranged, and the rivet nut is simple in structure and beneficial to reducing the manufacturing difficulty and the cost of the connecting assembly 100.

In some embodiments, a threaded bore 121 extends through the second section 12 in the axial direction X.

Illustratively, in addition to performing the rivet pulling operation on the rivet nut 10 by applying a pulling force to the rivet nut 10 after the rivet gun is used and the threaded hole 121 of the second segment 12 is screwed in through the threaded head, the rivet pulling operation may also be performed on the rivet nut 10 by providing a force transmission post with the threaded hole 121 extending through the second segment 12 in the axial direction X.

As an example, the force transmission column comprises a threaded rod and a pressure head connected to one end of the threaded rod in its own axial direction X. The rivet nut 10 passes the screw hole 121 at the in-process of rivet, and the threaded rod cooperates with the screw hole 121, and the pressure head butt is kept away from the one end of first section 11 in the second section 12, and the rivet rifle is connected in the threaded rod and applys pulling force to the force transmission post for threaded rod and pressure head homoenergetic are to first section 11 application pressure, and first section 11 can outwards bulge and form limit structure under the effect of external force, and limit structure can be fixed rivet nut 10 on the target installation piece.

In this way, by providing the threaded hole 121 to penetrate the second segment 12 in the axial direction X, the rivet of the blind rivet nut 10 can be made in more ways, and thus the applicability of the connection assembly 100 can be improved.

Fig. 10 is a schematic cross-sectional structure of still another connection assembly 100 according to some embodiments of the present application.

With continued reference to fig. 10, in some embodiments, the connection assembly 100 further includes a seal 40, the seal 40 being disposed between the blind rivet nut 10 and the sleeve 20.

Illustratively, the sealing member 40 may be fixedly connected to the blind rivet nut 10 and abutted against the sleeve 20, the sealing member 40 may be fixedly connected to the sleeve 20 and abutted against the blind rivet nut 10, and the sealing member 40 may be fixedly connected to the blind rivet nut 10 and the sleeve 20.

As an example, in the case where the sealing member 40 is fixedly connected to the blind rivet nut 10, the sealing member 40 may be fixedly connected to the inner wall of the first segment 11, or may be fixedly connected to a surface of the first flange 13 adjacent to the second flange 23.

As another example, in the case where the sealing member 40 is fixedly connected to the sleeve 20, the sealing member 40 may be fixedly connected to the outer wall of the main body portion 22 of the sleeve 20, or may be fixedly connected to a side surface of the second flange 23 adjacent to the first flange 13.

Alternatively, the seal 40 may be, but is not limited to being, made of a metallic material or a non-metallic material. For example, the metallic material may be, but is not limited to, aluminum, lead, indium, or stainless steel, etc., and the nonmetallic material may be, but is not limited to, rubber, plastic, ceramic, graphite, resin, etc. As an example, the sealing member 40 may be a sealant, which may be applied to at least one of an inner wall surface of the first segment 11, an outer wall surface of the sleeve 20, a side surface of the first flange 13 adjacent to the second flange 23, and a side surface of the second flange 23 adjacent to the first flange 13.

By providing the sealing member 40, the sealing performance between the sleeve 20 and the rivet nut 10 can be effectively improved, and the reliability of the whole connection assembly 100 can be improved.

In some embodiments, the sleeve 20 is in interference fit with the first section 11, so that the connection firmness between the sleeve 20 and the first section 11 is higher, and the risk of the sleeve 20 and the blind rivet nut 10 moving relatively along the axial direction X of the blind rivet nut 10 can be reduced, so that the reliability of the whole connection assembly 100 can be improved.

Fig. 11 is a schematic structural diagram of still another connection assembly 100 according to some embodiments of the present application.

With continued reference to fig. 11, in some embodiments, the outer wall of the first segment 11 is provided with a relief structure 50, the relief structure 50 comprising a plurality of concave structures and a plurality of convex structures, the plurality of concave structures and the plurality of convex structures being alternately distributed along the circumferential direction Z of the first segment 11.

Illustratively, the concave-convex structure 50 can improve the friction coefficient between the limiting structure formed by the first section 11 protruding outwards under the action of external force and the wall 51 of the battery box 5, so as to improve the connection firmness between the rivet nut 10 and the wall 51 of the battery box 5.

Alternatively, the relief structure 50 and the first segment 11 may be an integrally formed structure. On the one hand, the concave-convex structure 50 and the first section 11 do not need to be connected through an additional connecting process, so that the manufacturing process flow is simplified. Meanwhile, compared with the connection of the concave-convex structure 50 and the first section 11 through an additional connection process, the concave-convex structure 50 and the first section 11 which are in an integrated structure have higher connection firmness.

Alternatively, the number of concave structures may be, but is not limited to, two, three, four, or more, and the number of convex structures may be, but is not limited to, two, three, four, or more. As an example, the number of concave structures matches the number of convex structures.

The concave-convex structure 50 in the above technical solution can effectively improve the connection firmness between the blind rivet nut 10 and the wall 51 of the battery case 5, thereby improving the reliability of the connection assembly 100.

In some alternative embodiments, the female and male structures are each elongated structures extending along the axial direction X.

As an example, in the process that the first segment 11 protrudes outward under the action of external force, there is a certain fluctuation in the specific size of the protruding portion, and therefore, by providing both the concave structure and the convex structure as elongated structures extending in the axial direction X, it is possible to ensure that more concave-convex structures 50 can be included in the portion of the first segment 11 protruding outward under the action of external force, thereby further increasing the effective contact area of the concave-convex structures 50 with the wall portion 51 of the case 5 of the battery.

With continued reference to fig. 2, according to some embodiments of the present application, there is further provided a battery case 5 having a receiving cavity for receiving a battery cell 7, the battery case 5 including a wall portion 51 and the connection assembly 100 according to any one of the above embodiments, the wall portion 51 being provided with a mounting hole 511, the mounting hole 511 penetrating the wall portion 51 in a thickness direction of the wall portion 51. The blind rivet nut 10 is inserted into the mounting hole 511 and is riveted to the wall 51.

Illustratively, during the process of riveting the blind rivet nut 10, after the screw head of the blind rivet gun is screwed into the threaded hole 121 of the second section 12, a tensile force is applied to the blind rivet nut 10, and the first section 11 can protrude outwards under the action of external force and form a limiting structure, so that the limiting structure can fix the blind rivet nut 10 on the wall 51 of the case 5 of the battery.

Alternatively, the wall 51 may be, but is not limited to being, made of a metal or a non-metal material, for example, copper alloy, aluminum alloy, nickel alloy, titanium alloy, or stainless steel, etc., and the non-metal material may be polyethylene, polypropylene, polyvinyl chloride, or wood, etc.

According to the technical scheme, the connecting assembly 100 is arranged on the wall part 51 of the box body 5 of the battery, assembly between the external connection part 8 and the box body 5 of the battery can be facilitated, and the risk that part of parts on the external connection part 8 fall into the connecting assembly 100 can be reduced by the sleeve 20, so that reliability of the battery 2 is improved.

Alternatively, the projection shape of the mounting hole 511 along the thickness direction of the wall portion 51 is polygonal, and the projection shape of the first section 11 along the axial direction X is polygonal, so that a limiting structure is formed between the side wall of the mounting hole 511 and the blind rivet nut 10, and the risk of relative rotation between the blind rivet nut 10 and the wall portion 51 along the circumferential direction Z of the blind rivet nut 10 can be reduced.

Fig. 12 is a schematic structural diagram of a battery case 5 according to some embodiments of the present disclosure.

With continued reference to fig. 12, in some embodiments, the wall 51 is provided with a groove 512, the groove 512 is recessed with respect to a side surface of the wall 51 facing away from the battery cell 7, the mounting hole 511 is located in the groove 512, and at least a portion of the sleeve 20 is received in the groove 512.

By providing the groove 512 on the wall 51, the protruding wall 51 of the sleeve 20 can be reduced in size, so that the flatness of the surface of the wall 51 facing away from the battery cell 7 can be improved, on the one hand, the volume of the case 5 of the battery can be reduced, and the energy density of the battery can be improved; on the other hand, it is also advantageous to improve the integrity and aesthetic appearance of the case 5 of the battery.

In some alternative embodiments, the first flange 13 is accommodated in the groove 512, so that a side surface of the first flange 13 facing away from the first section 11 is flush with a side surface of the wall 51 facing away from the battery cell 7, thereby enabling further improvement in the integrity and aesthetic appearance of the case 5 of the battery.

Fig. 13 is a schematic structural view of a case 5 of another battery according to some embodiments of the present application.

With continued reference to fig. 13, in some embodiments, the battery case 5 further includes a spacer plate 52, where a third through hole 521 is formed in the spacer plate 52, and the spacer plate 52 is connected to a side of the wall 51 facing away from the battery cell 7, and at least a portion of the sleeve 20 is located in the third through hole 521.

Illustratively, the backing plate 52 may be removably attached to the wall 51 or may be integrally provided on the wall 51. The pad 52 may be directly connected to the wall 51 or may be restrained to the wall 51 by other means. By way of example, the pad 52 and the wall 51 may be connected by, but not limited to, bolting, welding, riveting, clamping, bonding, or the like.

Alternatively, backing plate 52 may be, but is not limited to being, made of a metal or a non-metallic material, for example, copper alloy, aluminum alloy, nickel alloy, titanium alloy, or stainless steel, etc., and the non-metallic material may be polyethylene, polypropylene, polyvinyl chloride, or wood, etc. As an example, the pad 52 and the wall 51 may be made of the same material, so as to simplify the manufacturing process and facilitate cost reduction.

In the above technical solution, by providing the backing plate 52 and at least part of the sleeve 20 is located in the third through hole 521, on one hand, the structural strength of the whole casing 5 of the battery can be improved; on the other hand, the size of the protruding wall portion 51 of the sleeve 20 can be reduced, so that the flatness of the surface of the wall portion 51 on the side facing away from the battery cell 7 is improved, and the integrity and the aesthetic appearance of the case 5 of the battery can be improved.

With continued reference to fig. 2 and 3, according to some embodiments of the present application, there is also provided a battery 2, the battery 2 including a battery cell 7 and a case 5 of the battery of any of the above aspects, the battery cell 7 being accommodated in the case 5 of the battery.

In some embodiments, the battery 2 further comprises an external connection part 8 and a fastener 9, the external connection part 8 is connected to the wall portion 51, the external connection part 8 is provided with a connection hole 81, and the fastener 9 passes through the connection hole 81 and is connected with the rivet nut 10.

Illustratively, the circumscribing component 8 may be, but is not limited to, a cover plate, a connector, or other electrical component, etc. The fastener 9 may be a bolt, a screw, a rivet or the like.

In some embodiments, the external connection component 8 includes a plate 82 and a bushing 83, the connection hole 81 is disposed on the plate 82, the bushing 83 is provided with a fourth through hole 831 extending along the axial direction X thereof, and the bushing 83 is disposed on the connection hole 81 and abuts against the sleeve 20.

Illustratively, the bushing 83 member can support the plate 82 during the process of passing the fastener 9 through the connecting hole 81 and connecting and fastening with the blind rivet nut 10, thereby sharing a part of the stress from the fastener 9 received by the plate 82 and reducing the risk of the plate 82 being crushed by the fastener 9.

In this way, the bushing 83 abuts against the sleeve 20, and the sleeve 20 can form a supporting function on the bushing 83, so that the risk that the bushing 83 falls into the connecting assembly 100 is reduced, and the reliability of the whole battery 2 is improved.

Alternatively, the bushing 83 may be, but is not limited to being, made of a metal or a non-metal material, for example, copper alloy, aluminum alloy, nickel alloy, titanium alloy, or stainless steel, etc., and the non-metal material may be polyethylene, polypropylene, polyvinyl chloride, or wood, etc.

In some embodiments, the rigidity of the plate 82 is smaller than that of the wall 51, and by providing the bushing 83, the plate 82 with smaller rigidity can be better supported and protected, so as to improve the connection firmness between the external connection part 8 and the battery case 5.

According to some embodiments of the present application, there is also provided an electrical device comprising a battery 2 according to any of the above aspects, the battery 2 being adapted to provide electrical energy.

For better understanding of the connection assembly 100 provided in the embodiments of the present application, embodiments of the connection assembly 100 described above in practical applications are provided herein based on the same inventive concepts.

The embodiment of the application provides a coupling assembling 100, coupling assembling 100 includes rivet nut 10 and sleeve 20, and rivet nut 10 includes along the first section 11 of self axial X distribution, second section 12 and first flange 13, and first section 11 inside is equipped with the first through-hole 111 that extends along axial X, and second section 12 inside is equipped with the screw hole 121 that extends along axial X, and first flange 13 encircles the outside at first section 11. The sleeve 20 includes a main body 22 and a second flange 23, at least a part of the main body 22 is disposed in the first through hole 111, the main body 22 is provided with a second through hole 21 extending along an axial direction X, the second flange 23 surrounds the outer side of the main body 22 and abuts against the first flange 13, and a projection of the screw hole 121 is located in a projection of the second through hole 21 in the axial direction X.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (23)

1. A connection assembly, comprising:

the rivet nut comprises a first section and a second section which are axially distributed along the rivet nut, wherein a first through hole which extends along the axial direction is formed in the first section, and a threaded hole which extends along the axial direction is formed in the second section;

The sleeve, at least part of sleeve set up in the first through-hole, the sleeve is equipped with along the second through-hole of axial extension, in axial, the projection of screw hole is located in the projection of second through-hole.

2. The connection assembly of claim 1, wherein the blind rivet nut further comprises a first flange encircling the outside of the first section;

the sleeve comprises a main body part and a second flange, the second through hole is formed in the main body part, at least part of the main body part is arranged in the first through hole, and the second flange surrounds the outer side of the main body part and is in abutting connection with the first flange along the axial direction.

3. The connection assembly of claim 2, wherein the sleeve further comprises a boss protruding from a side surface of the second flange facing away from the first flange.

4. A connection assembly according to claim 3, wherein the boss extends circumferentially of the sleeve and surrounds the second through bore.

5. The connection assembly of claim 2, wherein a first mating portion is provided on a side of the first flange adjacent to the second flange, a second mating portion is provided on a side of the second flange adjacent to the first flange, one of the first and second mating portions includes a first protrusion, and the other of the first and second mating portions includes a first recess, at least a portion of the first protrusion being received in the first recess.

6. The connection assembly of claim 5, wherein the first mating portion and the second mating portion are each disposed along a radial extension of the blind rivet nut.

7. The connection assembly according to claim 2, wherein the first flange is provided with an anti-slip layer on a side thereof adjacent to the second flange; and/or the number of the groups of groups,

an anti-slip layer is arranged on one side, close to the first flange, of the second flange.

8. The connection assembly of claim 2, wherein the first flange is bonded to the second flange.

9. The connection assembly of claim 1, wherein the outer wall of the sleeve is provided with a third mating portion and the inner wall of the first section is provided with a fourth mating portion, one of the third mating portion and the fourth mating portion including a second protrusion, the other of the third mating portion and the fourth mating portion including a second recess, at least a portion of the second protrusion being received in the second recess.

10. The connection assembly of claim 9, wherein the third mating portion and the fourth mating portion are each disposed extending in the axial direction.

11. The connection assembly of claim 1, wherein the projection of the inner wall of the first section along the axial direction and the projection of the outer wall of the sleeve along the axial direction are polygonal.

12. The connection assembly of claim 1, wherein the threaded bore extends through the second section in the axial direction.

13. The connection assembly of claim 1, further comprising a seal disposed between the blind rivet nut and the sleeve.

14. The connection assembly of claim 1, wherein the sleeve is an interference fit with the first section.

15. The connection assembly according to claim 1, wherein the outer wall of the first section is provided with a concave-convex structure comprising a plurality of concave structures and a plurality of convex structures, the plurality of concave structures and the plurality of convex structures being alternately distributed along the circumferential direction of the first section.

16. A battery box having a receiving chamber for receiving a battery cell, the battery box comprising:

a wall part provided with a mounting hole penetrating through the wall part along the thickness direction of the wall part;

the connection assembly of any one of claims 1-15, wherein the blind rivet nut is threaded through the mounting hole and riveted to the wall portion.

17. The battery compartment of claim 16, wherein the wall portion is provided with a recess recessed relative to a side surface of the wall portion facing away from the battery cells, the mounting hole being located in the recess, and at least a portion of the sleeve being received in the recess.

18. The battery box of claim 16, further comprising a backing plate, wherein a third through hole is formed in the backing plate, the backing plate is connected to a side of the wall portion facing away from the battery cell, and at least a portion of the sleeve is located in the third through hole.

19. A battery, comprising:

the battery case according to any one of claims 16 to 18;

and the battery monomer is accommodated in the battery box body.

20. The battery of claim 19, further comprising an external member connected to the wall portion, the external member having a connection hole formed therein, and a fastener passing through the connection hole and connected to the blind rivet nut.

21. The battery of claim 20, wherein the external connection member includes a plate body and a bushing, the connection hole is provided in the plate body, the bushing is provided with a fourth through hole extending in an axial direction of the bushing, and the bushing is provided in the connection hole and abuts against the sleeve.

22. The battery of claim 21, wherein the plate has a stiffness less than a stiffness of the wall portion.

23. An electrical device comprising a battery as claimed in any one of claims 19 to 22 for providing electrical energy.