CN220929904U - Rivet nut, battery box, battery and power utilization device - Google Patents

Abstract

The application provides a rivet nut, a battery box body, a battery and an electric device. The rivet nut comprises a rod portion, a first conical portion and a sealing element, the rod portion extends along a first direction, the first conical portion and the rod portion are arranged along the first direction, the first conical portion comprises a first large end and a first small end which are arranged along the first direction, the first small end is connected to the rod portion, and the sealing element is attached to the conical surface of the first conical portion.

Description

Rivet nut, battery box, battery and power utilization device

Technical Field

The application relates to the technical field of batteries, in particular to a rivet nut, 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 connecting component (such as a cast panel, a press-riveting nut or a pull-riveting nut) needs to be preassembled on the battery box body so as to facilitate the connection of the external component and the battery. The sealing performance of the connection between the connection member and the battery case is critical to the stable and reliable operation of the battery, and therefore, how to effectively improve the sealing performance of the connection between the connection member and the battery case is a problem to be solved in the battery technology.

Disclosure of utility model

In view of the above problems, the application provides a rivet nut, a battery box body, a battery and an electric device, which can effectively improve the sealing performance of connection between the rivet nut and the battery box body.

In a first aspect, embodiments of the present application provide a blind rivet nut including a stem portion extending in a first direction, a first tapered portion disposed along the first direction with the stem portion, the first tapered portion including a first major end and a first minor end disposed along the first direction, the first minor end being connected to the stem portion, and a seal attached to a tapered surface of the first tapered portion.

Above-mentioned technical scheme, first toper portion can form the countersunk head, has great contact surface between the conical surface of first toper portion and the battery box, and the sealing member is attached in the conical surface of first toper portion, can make the sealing member have great settable area, and then can improve effectively and draw the sealed effect between the wall portion of riveting nut and battery box.

In some embodiments of the first aspect, the stem portion includes a deformation functional region disposed adjacent to the first tapered portion in the first direction, the deformation functional region being provided with a relief structure.

The concave-convex structure in the technical scheme can effectively improve the connection firmness between the rivet nut and the wall part of the battery box body.

In some embodiments of the first aspect, the relief structure comprises 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 stem portion.

According to the technical scheme, the distribution area of the concave-convex structure can be increased, so that after the rivet nut is riveted to form the limiting structure, the effective contact area between the concave-convex structure and the wall part of the battery box body is increased, and the connection firmness between the rivet nut and the wall part of the battery box body can be further improved.

In some embodiments of the first aspect, the concave structure and the convex structure are both elongated structures extending along the first direction, so that the deformation functional region can include more concave-convex structures in the portion protruding outwards under the action of external force, and the effective contact area between the concave-convex structures and the wall portion of the battery box body is further improved.

In some embodiments of the first aspect, the stem portion and the first tapered portion are an integrally formed structure.

On the one hand, the rod part and the first conical part are not required to be connected through an additional connecting process, so that the manufacturing process flow is simplified. Meanwhile, compared with the mode that the rod part and the first conical part are connected through an additional connecting process, the rod part and the first conical part which are in an integrated structure have higher connection firmness.

In some embodiments of the first aspect, the seal extends along a circumference of the first taper.

The technical scheme can effectively increase the arrangement area of the sealing piece, and further improve the sealing effect between the rivet nut and the wall part of the battery box body.

In some embodiments of the first aspect, the projection shape of the stem portion along the first direction is polygonal.

The polygonal characteristics can prevent the rivet nut from rotating in the rivet pulling process, so that the phenomenon of heel rotation of the rivet nut in the rivet pulling process is avoided to a certain extent, and the stability of the rivet nut in the rivet pulling process is effectively improved.

In some embodiments of the first aspect, the blind rivet nut further includes a second tapered portion disposed along the first direction with the shank and at an end of the shank away from the first tapered portion along the first direction, the second tapered portion including a second major end disposed along the first direction and a second minor end, the second major end being connected to the shank.

The second cone of the technical scheme can play a role in guiding, so that the rod part can be inserted into the mounting hole more easily, and the convenience in mounting the rivet nut is improved.

In some embodiments of the first aspect, the blind rivet nut is provided with a connecting hole extending from the first large end along the first direction and into the rod portion, and at least part of the connecting hole in the rod portion is a threaded hole.

The technical scheme can enlarge the use environment of the rivet nut and effectively improve the applicability of the rivet nut.

In a second aspect, an embodiment of the present application provides a battery case, where the battery case includes a wall portion and a rivet nut provided in any one of the embodiments of the first aspect, the wall portion encloses a receiving cavity formed to receive a battery unit, a mounting hole is formed in the wall portion, the mounting hole penetrates the wall portion along a thickness direction of the wall portion, and the rivet nut penetrates the mounting hole and is riveted to the wall portion.

The first conical part of the rivet nut can form a countersunk head, a larger contact surface is arranged between the conical surface of the first conical part and the wall part of the battery box body, and the sealing element is attached to the conical surface of the first conical part, so that the sealing element has a larger settable area, and the sealing effect between the rivet nut and the wall part of the battery box body can be effectively improved.

In some embodiments of the second aspect, at least a portion of the stem portion extends beyond a side surface of the wall portion adjacent the receiving cavity in the first direction, and a distance between a plane on which the first major end lies and a side surface of the wall portion facing away from the receiving cavity is less than or equal to 0.3mm.

According to the technical scheme, the distance between the plane where the first large end is located and the surface of one side of the wall part, which is away from the accommodating cavity, is controlled within the range, so that the influence on the subsequent installation of the external part can be effectively reduced, and the integrity and the attractiveness of the battery box body can be improved.

In some embodiments of the second aspect, the plane where the first large end is located is flush with a surface of a side of the wall portion facing away from the accommodating cavity, so that an influence on subsequent installation of the external component can be further effectively reduced, and the integrity and the attractiveness of the battery box body are further improved.

In some embodiments of the second aspect, the mounting hole is a tapered hole comprising a third large end and a third small end, the third small end being adjacent to the receiving cavity relative to the third large end in the thickness direction of the wall portion.

According to the technical scheme, the matching effect between the conical hole and the first conical part can be improved, so that the sealing piece can be more fully filled between the first conical part and the conical hole, and the sealing effect between the rivet nut and the wall part of the battery box body is further improved.

In a third aspect, an embodiment of the present application provides a battery, including a battery case and a battery unit provided in any one of the embodiments of the second aspect, where the battery unit is accommodated in the battery case.

In a fourth aspect, an embodiment of the present application provides an electrical device, including a battery provided in any one of the embodiments of the third aspect, where a battery unit is used to provide electrical energy.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

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 structural diagram of a battery case according to some embodiments of the present application;

FIG. 3 is an enlarged schematic view of the structure at H of FIG. 2;

Fig. 4 is a schematic diagram of a structure of a blind rivet nut according to some embodiments of the present application;

fig. 5 is a schematic diagram of a rivet nut according to some embodiments of the present application after being riveted;

FIG. 6 is a schematic top view of a blind rivet nut according to some embodiments of the present application;

FIG. 7 is a schematic bottom view of a blind rivet nut according to some embodiments of the present application;

Fig. 8 is a schematic view of a partial structure of a wall portion of a battery case according to some embodiments of the present application;

FIG. 9 is a schematic cross-sectional view taken along line A-A of FIG. 8;

fig. 10 is a schematic view of a structure in which a portion of a wall portion of a battery case is engaged with a rivet nut according to some embodiments of the present application;

fig. 11 is a schematic sectional view of fig. 10 along B-B.

Reference numerals in the specific embodiments are as follows:

1. A vehicle; 2. a battery; 3. a controller; 4. a motor; 5. a battery case; 5a, a first box body part; 5b, a second box body part; 5c, a containing cavity; 51. a wall portion; 52. a mounting hole; 521. a third large end; 522. a third small end;

100. pulling and riveting a nut;

10. A stem portion; 11. a deformation functional region; 111. a limit structure; 112. a concave-convex structure; 20. a first tapered portion; 21. a first major end; 22. a first small end; 30. a seal; 40. a second taper; 41. a second large end; 42. a second small end; 43. a rounded corner structure; 50. a connection hole; x, first direction.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying 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 of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the 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 application herein 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 of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. 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 above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The term "and/or" in the present application is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.

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

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

The term "parallel" in the present 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.

The battery cell may be a lithium ion battery cell, a sodium lithium ion battery cell, a lithium metal battery cell, a sodium metal battery cell, a lithium sulfur battery cell, a magnesium ion battery cell, a nickel hydrogen battery cell, a nickel cadmium battery cell, a lead storage battery cell, etc., which is not limited by the embodiment of the application.

The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator. During the charge and discharge of the battery cell, active ions (e.g., lithium ions) are inserted and extracted back and forth between the positive electrode sheet and the negative electrode sheet. The separator is arranged between the positive plate and the negative plate, can play a role in preventing the positive plate and the negative plate from being short-circuited, and can enable active ions to pass through.

As an example, the battery cell may be a prismatic battery cell, a pouch battery cell, or other shaped battery cell, including a square case battery cell, a blade-shaped battery cell, a polygonal-prismatic battery cell, such as a hexagonal-prismatic battery cell, etc., and the present application is not particularly limited.

Reference to a battery in accordance with an embodiment of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity.

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

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 connecting component (such as a cast panel, a press-riveting nut or a pull-riveting nut) needs to be preassembled on the battery box body so as to facilitate the connection of the external component and the battery. The reliability of the connection between the connection member and the battery case is critical to the stable and reliable operation of the battery.

The inventor of the present application has noted that the battery case is currently generally constructed in the form of a cast panel, a clinch nut, or a blind rivet bolt. The casting panel has high cost and poor welding consistency. The requirement on the hole on the inner wall surface of the battery box body is higher in the installation process of the press-riveting nut, the press-riveting space and the gluing space of the press-riveting nut are required to be reserved, and in addition, if the problems of follow-up rotation, sliding teeth and the like occur in the installation process of the press-riveting nut, reworking cannot be realized, so that the installation cost is higher. The rivet nut can avoid the problems, but the sealing performance between the rivet nut and the battery box body is generally poor.

Based on the above, the inventors have made intensive studies to design a blind rivet nut including a stem portion extending in a first direction, a first tapered portion, and a seal member. The first conical portion and the rod portion are arranged along a first direction, the first conical portion comprises a first large end and a first small end which are arranged along the first direction, and the first small end is connected to the rod portion. The seal is attached to the conical surface of the first conical portion. The first conical part can form a countersunk head, a larger contact surface is formed between the conical surface of the first conical part and the battery box body, the sealing piece is attached to the conical surface of the first conical part, the sealing piece can have a larger settable area, and then the sealing effect between the rivet nut and the wall part of the battery box body can be effectively improved.

The technical scheme described by the embodiment of the application is suitable for battery monomers, 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 batteries and electric devices, but may be applied to all batteries including battery cases and electric devices using the batteries, but for simplicity of description, the following embodiments are described by taking electric vehicles as examples.

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 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, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1.

Fig. 2 is a schematic structural diagram of a battery case according to some embodiments of the present application.

With continued reference to fig. 2, the battery case 5 is configured to house the battery cells, and the battery case 5 may have various structures. In some embodiments, the battery 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 a receiving chamber 5c for receiving the battery cell. The second case portion 5b may be a hollow structure having one end opened, the first case portion 5a is a plate-like structure, and the first case portion 5a is covered on the opening side of the second case portion 5b to form a battery case 5 having a receiving chamber 5 c; the first case portion 5a and the second case portion 5b may each be a hollow structure having one side opened, and the opening side of the first case portion 5a is closed to the opening side of the second case portion 5b to form the battery case 5 having the accommodation chamber 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.

Alternatively, the number of the 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 battery box 5; of course, a plurality of battery cells may be connected in series or in parallel or in series-parallel to form a battery module, and then the plurality of battery modules may be connected in series or in parallel or in series-parallel to form a whole and be accommodated in the battery box 5.

In some embodiments, the plurality of battery cells are connected in series, or in parallel or in series-parallel to form the battery module. The plurality of battery modules are connected in series, in parallel or in series-parallel to form a whole and are accommodated in the battery box 5.

The plurality of battery cells in the battery module can be electrically connected through the bus component so as to realize parallel connection, serial connection or series-parallel connection of the plurality of battery cells in the battery module.

Fig. 3 is an enlarged schematic structural view of H of fig. 2, fig. 4 is a schematic structural view of a blind rivet nut according to some embodiments of the present application before blind rivet, fig. 5 is a schematic structural view of a blind rivet nut according to some embodiments of the present application after blind rivet, fig. 6 is a schematic structural view of a blind rivet nut according to some embodiments of the present application from above, fig. 7 is a schematic structural view of a blind rivet nut according to some embodiments of the present application from below, fig. 8 is a schematic structural view of a part of a wall portion of a battery case according to some embodiments of the present application, fig. 9 is a schematic structural view of a cross-section along A-A of fig. 8, fig. 10 is a schematic structural view of a part of a wall portion of a battery case according to some embodiments of the present application mated with a blind rivet nut, and fig. 11 is a schematic structural view of a cross-section along B-B of fig. 10.

With continued reference to fig. 3-11, an embodiment of the present application provides a blind rivet nut 100, the blind rivet nut 100 comprising a stem 10, a first tapered portion 20, and a seal 30, the stem 10 extending in a first direction X. The first tapered portion 20 is disposed along the first direction X with the stem portion 10, and the first tapered portion 20 includes a first large end 21 and a first small end 22 disposed along the first direction X, the first small end 22 being connected to the stem portion 10. The seal 30 is attached to the tapered surface of the first tapered portion 20.

Illustratively, the first small end 22 may be directly connected to the stem 10 or may be indirectly connected to the stem 10. The sealing member 30 is attached to the tapered surface of the first tapered portion 20, and it is understood that the sealing member 30 is attached to and connected to the tapered surface of the first tapered portion 20

During the rivet process of the rivet nut 100, a portion of the stem 10 can protrude outwards under the action of external force and form a limiting structure 111, and the limiting structure 111 and the first tapered portion 20 together fix the rivet nut 100 on the target mounting member. As an example, the target mounting member may be a wall 51 of the battery case, where the wall 51 of the battery case is provided with a mounting hole 52, and the blind rivet nut 100 is inserted into the mounting hole 52, and the limiting structure 111 and the first tapered portion 20 clamp the wall 51 so that the blind rivet nut 100 is fixed on the wall 51 of the battery case.

In order to more clearly describe the embodiments of the present application, the following description will take the wall 51 of the battery case as the target mount.

Alternatively, the shank 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. The first tapered portion 20 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.

Alternatively, the shaft 10 and the first tapered portion 20 may be of a unitary or split type structure. As an example, when the lever 10 and the first tapered portion 20 are of a split structure, the connection between the lever 10 and the first tapered portion 20 may be, but is not limited to, welding or clamping.

Illustratively, the first small end 22 of the first tapered portion 20 is connected to the stem portion 10, and the first large end 21 is located at an end of the first tapered portion 20 away from the stem portion 10 in the first direction X, such that the first tapered portion 20 forms a countersunk head that is more easily embedded into the wall portion 51 of the battery case. It will be appreciated that the dimension of the first large end 21 in a direction perpendicular to the first direction X is greater than the dimension of the first small end 22 in a direction perpendicular to the first direction X. The sealing member 30 is attached to the conical surface of the first conical portion 20, so that the sealing member 30 has a larger settable area and the sealing effect can be effectively improved. As an example, after the blind rivet nut 100 is installed in the target installation member, the seal 30 can enable a seal level of IPX7 or IPX8 to be achieved between the blind rivet nut 100 and the target installation member.

Alternatively, the seal 30 may be, but is not limited to being, made of a metallic or 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 30 may be a sealant, which is applied to the tapered surface of the first tapered portion 20.

Alternatively, the projected shape of the first tapered portion 20 in the first direction X may be, but is not limited to, a circle, a polygon, an ellipse, or the like.

According to the technical scheme, the first conical portion 20 can form the countersunk head, a larger contact surface is formed between the conical surface of the first conical portion 20 and the battery box body, the sealing piece 30 is attached to the conical surface of the first conical portion 20, the sealing piece 30 can have a larger settable area, and then the sealing effect between the rivet nut 100 and the wall portion 51 of the battery box body can be effectively improved.

In some embodiments, the stem 10 includes a deformation functional region 11, the deformation functional region 11 being disposed adjacent to the first tapered portion 20 in the first direction X, the deformation functional region 11 being provided with a relief structure 112.

As an example, during the rivet process of the rivet nut 100, the deformation functional region 11 can protrude outwards under the effect of external force and form the limit structure 111. The wall thickness of the deformation functional region 11 of the stem 10 may be smaller than the wall thickness of other regions of the stem 10, so that the deformation functional region 11 is easier to deform under the action of external force to form the limiting structure 111, which is beneficial to improving the reliability of the blind rivet nut 100.

As an example, the deformation functional region 11 is disposed near the first tapered portion 20 in the first direction X, so that the limit structure 111 formed by the deformation functional region 11 protruding outwards under the action of external force can be better matched with the first tapered portion 20, so that the blind rivet nut 100 is fixed on the wall portion 51 of the battery box body.

As an example, the concave-convex structure 112 can improve the friction coefficient between the limit structure 111 and the wall portion 51 of the battery case, and can further improve the connection firmness between the rivet nut 100 and the wall portion 51 of the battery case.

Alternatively, the relief structure 112 and the stem 10 may be an integrally formed structure. On the one hand, the concave-convex structure 112 and the rod portion 10 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 concave-convex structure 112 and the rod portion 10 through an additional connection process, the concave-convex structure 112 and the rod portion 10 which are in an integrated structure have higher connection firmness.

The concave-convex structure 112 in the above technical solution can effectively improve the connection firmness between the blind rivet nut 100 and the wall portion 51 of the battery case.

In some embodiments, the relief structure 112 comprises a plurality of concave structures and a plurality of convex structures that alternate along the circumference of the stem 10.

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 above technical solution can increase the distribution area of the concave-convex structure 112, so as to improve the effective contact area between the concave-convex structure 112 and the wall 51 of the battery box after the blind rivet nut 100 is blind-riveted to form the limit structure 111, and further improve the connection firmness between the blind rivet nut 100 and the wall 51 of the battery box.

In some embodiments, the concave structures and the convex structures are each elongated structures extending along the first direction X.

As an example, in the process that the deformation functional region 11 protrudes outward under the action of external force, there is a certain fluctuation in the specific size of the protruding portion, and therefore, the concave structure and the convex structure are both provided as the elongated structure extending along the first direction X, so that it is ensured that the deformation functional region 11 can include more concave-convex structures 112 in the portion protruding outward under the action of external force, and the effective contact area of the concave-convex structures 112 with the wall portion 51 of the battery case is further improved.

In some embodiments, the stem portion 10 and the first tapered portion 20 are an integrally formed structure.

On the one hand, the rod portion 10 and the first tapered portion 20 do not need to be connected through an additional connecting process, and the manufacturing process flow is simplified. Meanwhile, compared with the connection of the rod portion 10 and the first tapered portion 20 through an additional connection process, the rod portion 10 and the first tapered portion 20 in an integrated structure have higher connection firmness.

In some embodiments, the seal 30 extends along the circumference of the first taper 20.

As an example, the sealing member 30 may be a unitary structure, the sealing member 30 being distributed to extend in the circumferential direction of the first tapered portion 20 so that the sealing member 30 can be attached to the tapered surface of the entire first tapered portion 20. The seal 30 may also include a plurality of sub-seals disposed at intervals in the circumferential direction of the first taper 20, wherein the number of sub-seals may be, but is not limited to, two, three, four, or more.

The above technical solution can effectively increase the installation area of the sealing member 30, and further improve the sealing effect between the rivet nut 100 and the wall 51 of the battery case.

In some embodiments, the projection shape of the stem 10 in the first direction X is polygonal.

As an example, the polygonal feature can prevent the blind rivet nut 100 from rotating during the blind rivet process, so that the phenomenon of heel rotation of the blind rivet nut 100 during the blind rivet process is avoided to a certain extent, and the stability of the blind rivet nut 100 during the blind rivet process is effectively improved.

In some embodiments, the projection of the stem 10 in the first direction X is triangular, quadrilateral, pentagonal or hexagonal in shape.

As an example, the triangle, quadrangle, pentagon or hexagon features have good anti-rotation performance, and the processing technology is simple, so that the production cost of the blind rivet nut 100 is reduced.

In some embodiments, the blind rivet nut 100 further includes a second tapered portion 40, the second tapered portion 40 being disposed along the first direction X with the stem 10 and being located at an end of the stem 10 along the first direction X away from the first tapered portion 20, the second tapered portion 40 including a second large end 41 and a second small end 42 disposed along the first direction X, the second large end 41 being connected to the stem 10.

Illustratively, the second major end 41 of the second tapered portion 40 is connected to the stem 10 and the second minor end 42 is located at an end of the second tapered portion 40 that is distal from the stem 10 in the first direction X. It will be appreciated that the dimension of the second large end 41 in a direction perpendicular to the first direction X is greater than the dimension of the second small end 42 in a direction perpendicular to the first direction X. In the process of inserting the blind rivet nut 100 into the mounting hole 52 of the wall portion 51 of the battery box body, the second small end 42 will firstly enter the mounting hole 52, and as the insertion continues, the second large end 41 re-enters the mounting hole 52, so that the second taper can play a guiding role, so that the rod portion 10 can be more easily inserted into the mounting hole 52, and the convenience in mounting of the blind rivet nut 100 is improved.

Alternatively, the second taper 40 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.

Alternatively, the connection between the stem 10 and the second taper 40 may be, but is not limited to, welding or clamping, etc.

Alternatively, the second tapered portion 40 and the stem portion 10 may be an integrally formed structure. On the one hand, the second tapered portion 40 and the rod portion 10 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 second tapered portion 40 and the rod portion 10 through an additional connection process, the second tapered portion 40 and the rod portion 10 which are in an integrated structure have higher connection firmness.

In some embodiments, the end of the second taper 40 remote from the stem 10 in the first direction X is provided with a rounded structure 43.

Illustratively, during the process of inserting the rivet nut 100 into the mounting hole 52 of the wall 51 of the battery box, the rounded structure 43 can reduce the abrasion of the rivet nut 100 after the end of the rivet nut 100 away from the rod 10 in the first direction X interferes with the wall 51 of the battery box, thereby avoiding the damage of the battery box or the rivet nut 100 during the mounting process to a certain extent, and improving the product yield.

In some embodiments, the blind rivet nut 100 is provided with a connecting hole 50, the connecting hole 50 extends from the first large end 21 along the first direction X and extends into the rod portion 10, and at least part of the connecting hole 50 located in the rod portion 10 is a threaded hole.

The rivet gun can realize the rivet pulling work of the rivet nut 100 through the threaded hole. As an example, the rivet pulling gun comprises a connecting rod, an external thread matched with the threaded hole is arranged on the connecting rod, and after the connecting rod of the rivet pulling gun is in threaded connection with the threaded hole, the rivet pulling gun applies tension to the rivet pulling nut 100, so that rivet pulling work of the rivet pulling nut 100 is achieved.

The threaded bore can also provide a connection environment for subsequent external components. As an example, the external member may be a connector provided with a through hole to which the rivet nut 100 is fixedly coupled to the wall portion 51 of the battery case, the through hole of the connector corresponding to the coupling hole 50 of the rivet nut 100, and a bolt passing through the through hole and the coupling hole 50 and being screw-coupled with the screw hole so that the connector is fixedly coupled to the wall portion 51 of the battery case.

In this way, the above technical solution can expand the use environment of the blind rivet nut 100, and effectively improve the applicability of the blind rivet nut 100.

According to some embodiments of the present application, the battery case further includes a wall portion 51 and the rivet nut 100 according to any of the above embodiments, the wall portion 51 encloses a receiving cavity 5c for receiving a battery cell, the wall portion 51 is provided with a mounting hole 52, the mounting hole 52 penetrates the wall portion 51 along a thickness direction of the wall portion 51, and the rivet nut 100 penetrates the mounting hole 52 and is riveted to the wall portion 51.

The first tapered portion 20 of the rivet nut 100 can form a countersunk head, a larger contact surface is formed between the tapered surface of the first tapered portion 20 and the wall portion 51 of the battery box body, the sealing element 30 is attached to the tapered surface of the first tapered portion 20, the sealing element 30 can have a larger settable area, and then the sealing effect between the rivet nut 100 and the wall portion 51 of the battery box body can be effectively improved.

With continued reference to fig. 8-11, in some embodiments, at least a portion of the stem 10 extends beyond a side surface of the wall 51 adjacent the receiving cavity 5c in the first direction X, and the spacing between the plane of the first major end 21 and the side surface of the wall 51 facing away from the receiving cavity 5c is less than or equal to 0.3mm.

As an example, the distance between the plane in which the first large end 21 is located and the side surface of the wall portion 51 facing away from the accommodation chamber 5c may be, but is not limited to, 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, or the like.

It will be appreciated that if the distance between the plane on which the first large end 21 is located and the side surface of the wall 51 facing away from the accommodating cavity 5c is too large, the first large end 21 protrudes significantly from the side surface of the wall 51 facing away from the accommodating cavity 5c, which not only affects the subsequent installation of the external component, but also makes the battery case worse in integrity and aesthetic appearance.

According to the technical scheme, the distance between the plane where the first large end 21 is located and the surface of one side of the wall portion 51 away from the accommodating cavity 5c is controlled within the range, so that the influence on the subsequent installation of the external component can be effectively reduced, and the integrity and the attractiveness of the battery box body can be improved.

In some embodiments, the plane where the first large end 21 is located is flush with a surface of a side of the wall portion 51 facing away from the accommodating cavity 5c, so that the influence on subsequent installation of the external connection component can be further effectively reduced, and the integrity and the aesthetic degree of the battery box body can be further improved.

In some embodiments, the mounting hole 52 is a tapered hole including a third large end 521 and a third small end 522, and the third small end 522 is adjacent to the receiving chamber 5c relative to the third large end 521 in the thickness direction of the wall portion 51.

As an example, the shape and size of the tapered hole are matched with those of the first tapered portion 20, so that the matching effect between the tapered hole and the first tapered portion 20 can be improved, the sealing member 30 can be more sufficiently filled between the first tapered portion 20 and the tapered hole, and the sealing effect between the blind rivet nut 100 and the wall portion 51 of the battery case can be further improved.

According to some embodiments of the present application, there is further provided a battery including the battery case of any one of the above aspects and a battery cell, the battery cell being accommodated in the battery case.

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

For better understanding of the blind rivet nut 100 provided in the embodiment of the present application, the embodiment of the blind rivet nut 100 in practical application is provided herein based on the same inventive concept.

The embodiment of the present application provides a blind rivet nut 100, wherein the blind rivet nut 100 comprises a stem 10, a first tapered portion 20 and a sealing member 30, the stem 10 extending in a first direction X. The first tapered portion 20 is disposed along the first direction X with the stem portion 10, and the first tapered portion 20 includes a first large end 21 and a first small end 22 disposed along the first direction X, the first small end 22 being connected to the stem portion 10. The seal member 30 is attached to the tapered surface of the first tapered portion 20 and is provided extending in the circumferential direction of the first tapered portion 20.

The lever portion 10 includes a deformation functional region 11, the deformation functional region 11 is disposed near the first taper portion 20 along the first direction X, and the deformation functional region 11 is provided with a concave-convex structure 112. The concave-convex structure 112 includes a plurality of concave structures and a plurality of convex structures, which are alternately distributed along the circumferential direction of the shaft 10. The concave structures and the convex structures are elongated structures extending along the first direction X.

Wherein, the projection shape of the rod portion 10 along the first direction X is hexagonal.

The application also provides a battery box body, which comprises a wall part 51 and the rivet nut 100 in any scheme, wherein the wall part 51 is surrounded to form a containing cavity 5c for containing a battery monomer, the wall part 51 is provided with a mounting hole 52, the mounting hole 52 penetrates through the wall part 51 along the thickness direction of the wall part 51, and the rivet nut 100 penetrates through the mounting hole 52. In the first direction X, at least part of the shaft portion 10 protrudes beyond a side surface of the wall portion 51 close to the accommodating chamber 5c, and a distance between a plane on which the first large end 21 is located and a side surface of the wall portion 51 facing away from the accommodating chamber 5c is less than or equal to 0.3mm.

Wherein the mounting hole 52 is a tapered hole including a third large end 521 and a third small end 522, and the third small end 522 is adjacent to the accommodation chamber 5c with respect to the third large end 521 in the thickness direction of the wall portion 51.

It should be noted that, without conflict, the embodiments of the present application and features of 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 application has been described in detail with reference to the foregoing embodiments, it will 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 application, and are intended to be included within the scope of the appended 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 (15)

1. A blind rivet nut, comprising:

A rod extending in a first direction;

The first conical part is arranged along the first direction with the rod part, and comprises a first large end and a first small end which are arranged along the first direction, and the first small end is connected with the rod part;

a seal attached to the tapered surface of the first tapered portion.

2. The blind rivet nut as recited in claim 1, characterized in that said shank portion includes a deformation functional zone disposed adjacent to said first tapered portion in said first direction, said deformation functional zone being provided with a concave-convex structure.

3. The blind rivet nut as recited in claim 2, characterized in that said concave-convex structure comprises a plurality of concave structures and a plurality of convex structures, said plurality of concave structures and said plurality of convex structures being alternately distributed along a circumferential direction of said shank.

4. A blind rivet nut as recited in claim 3, characterized in that said female structure and said male structure are elongated structures extending in said first direction.

5. The blind rivet nut as recited in claim 1, characterized in that said stem portion and said first tapered portion are of unitary construction.

6. The blind rivet nut as recited in claim 1, characterized in that said seal member is disposed extending in a circumferential direction of said first tapered portion.

7. The blind rivet nut as recited in claim 1, characterized in that a projected shape of said stem portion along said first direction is polygonal.

8. The blind rivet nut as recited in claim 1, further comprising a second tapered portion disposed along said first direction with said shank and at an end of said shank that is distal from said first tapered portion along said first direction, said second tapered portion comprising a second major end and a second minor end disposed along said first direction, said second major end being connected to said shank.

9. The blind rivet nut as set forth in claim 1 wherein said blind rivet nut is provided with a connecting hole extending from said first major end in said first direction and into said shank, at least a portion of said connecting hole in said shank being a threaded hole.

10. A battery box, comprising:

The wall part is surrounded to form a containing cavity for containing the battery cells, the wall part is provided with a mounting hole, and the mounting hole penetrates through the wall part along the thickness direction of the wall part;

A blind rivet nut as claimed in any one of claims 1 to 9, which is threaded through the mounting hole and riveted to the wall.

11. The battery compartment of claim 10, wherein at least a portion of the stem extends beyond a side surface of the wall portion adjacent the receiving cavity in the first direction, and wherein a distance between a plane in which the first major end is located and a side surface of the wall portion facing away from the receiving cavity is less than or equal to 0.3mm.

12. The battery compartment of claim 11, wherein the first major end is planar with a side surface of the wall portion facing away from the receiving cavity.

13. The battery case according to claim 10, wherein the mounting hole is a tapered hole including a third large end and a third small end, the third small end being adjacent to the accommodation chamber with respect to the third large end in a thickness direction of the wall portion.

14. A battery, comprising:

A battery case according to any one of claims 10 to 13;

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

15. An electrical device comprising a battery as claimed in claim 14 for providing electrical energy.