CN220956375U - Rivet structure, box, battery and power consumption device - Google Patents

Abstract

The application provides a rivet structure, a box body, a battery and an electric device. The rivet structure comprises: a first connecting piece having a first connecting hole; the second connecting piece is arranged on one side of the first connecting piece and is provided with a second connecting hole, and the aperture of the second connecting hole is smaller than that of the first connecting hole; the rivet nut penetrates through the first connecting hole and the second connecting hole and comprises an internal thread part, a stop part and a protruding part, wherein the stop part is abutted against one side of the first connecting piece, which is opposite to the second connecting piece, the protruding part is abutted against one side of the second connecting piece, which is opposite to the first connecting piece, so that the first connecting piece and the second connecting piece are clamped between the stop part and the protruding part, and the internal thread part is arranged on one side of the protruding part, which is opposite to the second connecting piece; the elastic piece is sleeved on the outer peripheral side of the rivet nut, is positioned in the first connecting hole and is pressed between the second connecting piece and the stop part. The rivet pulling structure provided by the application is beneficial to reducing the risk of deformation of the part of the second connecting piece corresponding to the first connecting hole.

Description

Rivet structure, box, battery and power consumption device

Technical Field

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

Background

Batteries are widely used in electronic devices such as cellular phones, notebook computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy vehicles, electric toy ships, electric toy airplanes, electric tools, and the like.

In addition to improving the service performance of batteries, reliability is also a problem to be considered in the development of battery technology. Therefore, how to improve the reliability of the battery is a continuous improvement in battery technology.

Disclosure of utility model

The embodiment of the application provides a box body, a battery and an electric device, which can improve the reliability of the battery.

In a first aspect, the application provides a rivet pulling structure comprising a first connecting piece, a second connecting piece, a rivet pulling nut and an elastic piece; the first connecting piece is provided with a first connecting hole; the second connecting piece is arranged on one side of the first connecting piece and is provided with a second connecting hole, and the aperture of the second connecting hole is smaller than that of the first connecting hole; the rivet pulling nut penetrates through the first connecting hole and the second connecting hole, the rivet pulling nut comprises an internal thread part, a stop part and a protruding part, the stop part is abutted against one side of the first connecting piece, which is opposite to the second connecting piece, the protruding part is abutted against one side of the second connecting piece, which is opposite to the first connecting piece, so that the first connecting piece and the second connecting piece are clamped between the stop part and the protruding part, and the internal thread part is arranged on one side of the protruding part, which is opposite to the second connecting piece; the elastic piece is sleeved on the outer peripheral side of the rivet nut, is positioned in the first connecting hole and is pressed between the second connecting piece and the stop part.

According to the rivet pulling structure provided by the embodiment of the application, the elastic piece is arranged between the second connecting piece and the stop part in a pressing way, a certain supporting effect can be provided for the part, corresponding to the first connecting hole, of the second connecting piece through the elastic piece, the risk of deformation of the part, corresponding to the first connecting hole, of the second connecting piece is reduced, the stability of the rivet pulling structure is improved, and the reliability of a battery is improved in the situation that the rivet pulling structure is applied to the battery.

In some embodiments, the resilient member is pressed against the peripheral side of the blind rivet nut. In the process of riveting connection, the risk that the protruding part cannot be formed normally due to unnecessary deformation of the riveting nut in the first connecting hole is reduced, and the reliability of riveting connection is improved.

In some embodiments, the edge of the projection in the axial direction of the blind rivet nut that is forward projected on the second connector is located within the edge of the spring in the axial direction of the blind rivet nut that is forward projected on the second connector. The elastic piece is larger to the holding area of second connecting piece, and at the in-process of riveting the connection, the bellying produces towards the pressure of first connecting piece to the second connecting piece, and the elastic piece can more steadily produce the support to the position that the second connecting piece corresponds with first connecting hole, is favorable to further reducing the risk that the second connecting piece corresponds with first connecting hole produces deformation.

In some embodiments, the blind rivet nut has a boss located within the first attachment bore and projecting radially outwardly of the blind rivet nut. Therefore, the structural strength of the rivet nut in the first connecting hole is improved, the risk that the protruding part cannot be formed normally due to unnecessary deformation of the rivet nut in the first connecting hole is reduced in the rivet connection process, and the reliability of rivet connection is improved.

In some embodiments, the elastic member includes a straight section and a curved section, one of which abuts against the stopper portion and the other of which abuts against the second connecting member. The elastic piece is favorable to improving the pressure of the elastic piece to the first connecting piece and the second connecting piece, and then is favorable to improving the effect of sealing connection of the first connecting piece and the second connecting piece, and is convenient for realize the stress balance of the second connecting piece, and is further favorable to reducing the risk that the second connecting piece deforms.

In some embodiments, the curved section has a tip that is spaced from the stop and the second connector. The elastic piece can generate a force which resists the second connecting piece relatively to the protruding part through the deformation generated by the bending section, so that the deformation of the second connecting piece is further reduced, and the risk of damaging the second connecting piece or the stopping part by the tip is reduced.

In some embodiments, the material of the resilient member comprises one of stainless steel, rubber, and silicone. The stainless steel has larger elastic modulus and bearing capacity, is favorable for improving the supporting force of the elastic piece, can generate larger elastic deformation by rubber and silica gel, can generate larger elastic deformation in the process of rivet connection, and is favorable for improving the sealing performance of the first connecting piece and the second connecting piece after rivet connection.

In some embodiments, the blind rivet nut further has a communication hole that communicates with the internal thread of the internal thread portion and penetrates one end of the stopper portion of the blind rivet nut. The arrangement is convenient for smooth proceeding of the rivet connection process and connection of the rivet structure and other plate structures.

In a second aspect, a box according to an embodiment of the present application includes the rivet structure provided in any one of the above embodiments.

The box body provided by the embodiment of the application has the same technical effects due to the adoption of the rivet pulling structure provided by any one of the embodiments, and is not repeated herein.

In a third aspect, a battery provided by an embodiment of the present application includes a case and a battery unit provided by the above embodiment, where the battery unit is accommodated in the case.

The battery provided by the embodiment of the application has the same technical effects due to the adoption of the case provided by the embodiment, and is not described in detail herein.

In a fourth aspect, an embodiment of the present application provides an electrical device, including a battery provided in the foregoing embodiment, where the battery is configured to provide electrical energy.

The power utilization device provided by the embodiment of the application has the same technical effects due to the adoption of the battery provided by the embodiment, and is not repeated herein.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a vehicle according to an embodiment of the present application;

fig. 2 is a schematic structural view of a battery according to an embodiment of the present application;

Fig. 3 is a schematic structural view of a battery module in a battery according to an embodiment of the present application;

Fig. 4 is a schematic diagram of an exploded structure of a battery cell in a battery according to an embodiment of the present application;

Fig. 5 is a schematic structural diagram of a rivet structure according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another rivet structure according to an embodiment of the present application;

FIG. 7 is a schematic view of another rivet structure according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of still another rivet structure according to an embodiment of the present application.

In the drawings, the drawings are not necessarily to scale.

Reference numerals illustrate:

1. A vehicle; 1a, a motor; 1b, a controller;

10. a battery; 11. a case; 111. a first box portion; 112. a second box portion;

20. a battery module;

30. A battery cell; 31. a housing; 311. an end cap; 312. a housing;

40. A rivet pulling structure; 41. a first connector; 41a, first connection holes; 42. a second connector; 42a, second connecting holes; 43. pulling and riveting a nut; 43a, communication holes; 431. an internal thread portion; 432. a stop portion; 433. a boss; 434. a boss; 44. an elastic member; 441. a straight section; 442. a curved section; 4421. a tip.

Detailed Description

Embodiments of the present application are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the embodiments described.

In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like are merely used for convenience in describing the present application and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.

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. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.

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

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

In the present application, the battery cells may include a lithium ion secondary battery cell, a lithium ion primary battery cell, a lithium sulfur battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, or a magnesium ion battery cell, which is not limited in the embodiment of the present application. The battery cell may be in a cylindrical shape, a flat shape, a rectangular parallelepiped shape, or other shapes, which is not limited in this embodiment of the application.

The battery referred to by 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 arranged, the plurality of battery cells are fixedly arranged 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 the battery module being accommodated 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.

The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, 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 and the negative electrode. The isolating film is arranged between the positive electrode and the negative electrode, can play a role in preventing the positive electrode and the negative electrode from being short-circuited, and can enable active ions to pass through.

In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

As an example, the positive electrode current collector has two surfaces opposing in its own thickness direction, and the positive electrode active material is provided on either or both of the two surfaces opposing the positive electrode current collector.

As an example, the positive electrode current collector may employ a metal foil or a composite current collector. For example, as the metal foil, silver-surface-treated stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, titanium, or the like can be used. The composite current collector may include a polymeric material base layer and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel alloy, titanium alloy, silver alloy, etc.) on a polymer material substrate (e.g., polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as a battery positive electrode active material may be used. These positive electrode active materials may be used alone or in combination of two or more.

In some embodiments, the positive electrode may employ carbon foam or metal foam. The foam metal can be foam nickel, foam copper, foam aluminum or foam alloy. When the metal foam is used as the positive electrode, the surface of the metal foam may not be provided with the positive electrode active material, but may be provided with the positive electrode active material. As an example, a lithium source material, which is lithium metal and/or a lithium-rich material, potassium metal or sodium metal, may also be filled and/or deposited within the foam metal.

In some embodiments, the negative electrode may be a negative electrode tab, which may include a negative electrode current collector.

As an example, the negative electrode current collector may employ a metal foil or a composite current collector. For example, as the metal foil, silver surface treated stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, titanium, or the like can be used. The composite current collector may include a polymeric material base layer and a metal layer. The composite current collector may be formed by forming a metal material (copper, copper alloy, nickel alloy, titanium alloy, silver alloy, etc.) on a polymer material substrate (e.g., polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

As an example, the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

As an example, the anode current collector has two surfaces opposing in its own thickness direction, and the anode active material is provided on either or both of the two surfaces opposing the anode current collector.

As an example, a negative active material for a battery cell, which is well known in the art, may be used. As an example, the anode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, and the like.

In some embodiments, the negative electrode may be carbon foam or metal foam. The foam metal can be foam nickel, foam copper, foam aluminum or foam alloy. When the foam metal is used as the negative electrode sheet, the surface of the foam metal does not need to be provided with a negative electrode active material, and the surface of the foam metal can be provided with the negative electrode active material.

As an example, a lithium source material, which is a lithium metal and/or a lithium-rich material, potassium metal, or sodium metal, may also be filled and/or deposited within the negative electrode current collector.

In some embodiments, the material of the positive electrode current collector may be aluminum and the material of the negative electrode current collector may be copper.

In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode. The type of the separator is not particularly limited, and any known porous separator having good chemical stability and mechanical stability can be used.

As an example, the main material of the separator may be at least one selected from glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic.

In some embodiments, the battery cell further includes an electrolyte that serves to conduct ions between the positive and negative electrodes. The application is not particularly limited in the kind of electrolyte, and may be selected according to the need. The electrolyte may be liquid, gel or solid.

In some embodiments, the electrode assembly is a rolled structure. The positive plate and the negative plate are wound into a winding structure.

In some embodiments, the electrode assembly is a lamination stack.

The positive plate and the negative plate can be respectively arranged in a plurality, and the positive plates and the negative plates are alternately laminated.

As an example, a plurality of positive electrode sheets may be provided, and the negative electrode sheets are folded to form a plurality of folded sections arranged in a stacked manner, with one positive electrode sheet sandwiched between adjacent folded sections.

As an example, the positive and negative electrode sheets are each folded to form a plurality of folded sections in a stacked arrangement.

As an example, the separator may be provided in plurality, respectively between any adjacent positive electrode sheet or negative electrode sheet.

As an example, the separator may be continuously provided, being disposed between any adjacent positive or negative electrode sheets by folding or winding.

In some embodiments, the electrode assembly may have a cylindrical shape, a flat shape, a polygonal column shape, or the like.

In some embodiments, the electrode assembly is provided with tabs that can conduct current away from the electrode assembly. The tab includes a positive tab and a negative tab.

The battery cell further includes a case inside which a receiving chamber for receiving the electrode assembly is formed. The case may protect the electrode assembly from the outside to prevent foreign substances from affecting the charge or discharge of the electrode assembly.

In the battery, two stacked connection members are usually rivet-connected by a rivet nut, and for this purpose, it is necessary to provide connection holes in the two connection members to pass through the rivet nut. In consideration of the problems of position degree and dimensional accuracy, the connecting hole of one connecting piece is usually required to be made larger, so that in the process of rivet connection, the part, corresponding to the larger connecting hole, of the connecting piece with the smaller opening is not supported, the risk of deformation exists, and the reliability of the battery is seriously affected.

In view of this, the embodiment of the application provides a rivet pulling structure, which is sleeved on the periphery side of a rivet pulling nut located at a first connecting hole and is pressed between a second connecting piece and a stop part, and provides a certain support for a part of the second connecting piece corresponding to the first connecting hole through the elastic piece, so that the risk of deformation of the part of the second connecting piece corresponding to the first connecting hole is reduced, and the rivet pulling structure is beneficial to improving the reliability of a battery when the rivet pulling structure is applied to the battery.

The technical scheme disclosed by the embodiment of the application is suitable for a rivet structure, a box body using the rivet structure, a battery comprising the box body and an electric device using the battery.

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.

For convenience of explanation, the following examples will be described taking an electric device as an example of a vehicle.

As shown in fig. 1, a battery 10 is provided inside a vehicle 1. The battery 10 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, for example, the battery 10 may serve as an operating power source of the vehicle 1.

The vehicle 1 may further include a controller 1b and a motor 1a. The controller 1b is used to control the battery 10 to supply power to the motor 1a, for example, for operating power requirements at start-up, navigation and travel of the vehicle 1.

In some embodiments of the application, the battery 10 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.

Referring to fig. 2, the battery 10 includes a battery cell (not shown in fig. 2). The battery 10 may further include a case 11 for accommodating the battery cells.

The case 11 is used to accommodate the battery cells, and the case 11 may have various structural forms. In some embodiments, the housing 11 may include a first housing portion 111 and a second housing portion 112. The first case 111 and the second case 112 are mutually covered. The first and second case parts 111 and 112 together define an accommodating space for accommodating the battery cells. The second case 112 may have a hollow structure with one end opened, the first case 111 has a plate-like structure, and the first case 111 is covered on the opening side of the second case 112 to form the case 11 having an accommodation space; the first case portion 111 and the second case portion 112 may each have a hollow structure with one side opened. The opening side of the first case portion 111 is engaged with the opening side of the second case portion 112 to form the case 11 having the accommodation space. Of course, the first and second case parts 111 and 112 may be various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In order to improve the sealability after the first and second case parts 111 and 112 are connected, a sealing member, such as a sealant, a gasket, or the like, may be further disposed between the first and second case parts 111 and 112.

Assuming that the first housing portion 111 is covered with the second housing portion 112, the first housing portion 111 may also be referred to as an upper case cover, and the second housing portion 112 may also be referred to as a lower case.

In the battery 10, the number of battery cells may be one or more. If the number of the battery cells is multiple, the battery cells can be connected in series, in parallel or in series-parallel. The series-parallel connection refers to that a plurality of battery monomers are connected in series or in parallel. The plurality of battery cells can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells is accommodated in the box 11. As shown in fig. 3, a plurality of battery cells may be connected in series, in parallel, or in series-parallel to form the battery module 20. The battery strings are connected in series, in parallel or in series-parallel to form a whole and are accommodated in the case 11.

The battery 10 may also be provided with no case 11 and include a plurality of battery cells connected in series or parallel, and the plurality of battery cells are fixed by a structure such as a steel belt or a binding belt after being connected in series or parallel, and then the plurality of batteries 10 are connected in series or parallel to form a new energy storage unit.

In some embodiments, electrical connection between the plurality of cells in the battery 10 may be achieved through a bus bar component to achieve parallel or series-parallel connection of the plurality of cells in the battery 10.

Referring to fig. 4, a battery cell 30 according to an embodiment of the present application includes an electrode assembly 32 and a housing 31, wherein the housing 31 has a receiving cavity, and the electrode assembly 32 is received in the receiving cavity.

The case 31 may include a case 312 and an end cap 311, and when the battery cell 30 is assembled, the electrode assembly 32 may be first placed in the receiving chamber, the end cap 311 is then capped on the case 312, and then an electrolyte is injected into the receiving chamber through an electrolyte injection port on the end cap 311.

In some embodiments, the housing 31 may also be used to contain an electrolyte, such as an electrolyte. The housing 31 may take a variety of structural forms.

The housing 31 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc. The shape of the case 31 may be determined according to the specific shape of the electrode assembly 32. For example, if the electrode assembly 32 has a cylindrical structure, the case 31 may alternatively have a cylindrical structure. If the electrode assembly 32 has a rectangular parallelepiped structure, the case 31 may alternatively have a rectangular parallelepiped structure. In fig. 4, the case and the electrode assembly 32 are each exemplarily rectangular parallelepiped in structure.

The material of the housing 31 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., which is not particularly limited in the embodiment of the present application.

The electrode assembly 32 accommodated in the case 31 may be one or more. In fig. 4, the number of electrode assemblies 32 accommodated in the case 31 is two.

In a first aspect, as shown in fig. 5, a rivet structure 40 provided in an embodiment of the present application includes a first connecting member 41, a second connecting member 42, a rivet nut 43, and an elastic member 44. The first connection member 41 has a first connection hole 41a, the second connection member 42 is provided at one side of the first connection member 41, the second connection member 42 has a second connection hole 42a, and the second connection hole 42a has a smaller aperture than the first connection hole 41 a. The rivet nut 43 is arranged in the first connecting hole 41a and the second connecting hole 42a in a penetrating mode, the rivet nut 43 comprises an internal thread portion 431, a stop portion 432 and a protruding portion 433, the stop portion 432 is abutted to one side, opposite to the second connecting piece 42, of the first connecting piece 41, the protruding portion 433 is abutted to one side, opposite to the first connecting piece 41, of the second connecting piece 42, the first connecting piece 41 and the second connecting piece 42 are clamped between the stop portion 432 and the protruding portion 433, and the internal thread portion 431 is arranged on one side, opposite to the second connecting piece 42, of the protruding portion 433. The elastic member 44 is sleeved on the outer periphery side of the rivet nut 43, and the elastic member 44 is located in the first connecting hole 41a and is pressed between the second connecting member 42 and the stop portion 432.

The first and second connection members 41 and 42 may be respectively plate-shaped or block-shaped, etc. The aperture of the second connecting hole 42a is smaller than that of the first connecting hole 41a, before riveting, the elastic member 44 may be sleeved on the rivet nut 43, and then the rivet nut 43 may be disposed on the side of the rivet nut 43 with the first connecting piece 41 in the process of penetrating the rivet nut 43 between the first connecting piece 41 and the second connecting piece 42, and penetrating through the first connecting hole 41a and then penetrating through the second connecting hole 42a. Since the aperture of the first connection hole 41a is larger than that of the second connection hole 42a, the rivet nut 43 is facilitated to pass through the first connection hole 41a and the second connection hole 42a smoothly in sequence.

After the rivet nut 43 passes through the first connecting hole 41a and the second connecting hole 42a, before rivet connection is performed, the protruding portion 433 is not formed, in the process of rivet, the stop portion 432 abuts against the first connecting piece 41, the external screw member is matched with the screw thread portion of the rivet nut 43, in the process of rivet connection, the portion, located on one side of the second connecting piece 42, of the rivet nut 43 is deformed and protrudes, and in the side, facing away from the first connecting piece 41, of the second connecting piece 42, the protruding portion 433 is formed.

It will be appreciated that the elastic member 44 is elastically deformed during the rivet connection process, and is sandwiched in the first connection hole 41a between the second connection member 42 and the stopper 432.

The elastic member 44 is sleeved with the blind rivet nut 43 at the outer circumferential side of the first connection hole 41a, and then the elastic member 44 may be in contact with the outer circumferential side of the blind rivet nut 43 or the elastic member 44 may be spaced apart from the outer circumferential side of the blind rivet nut 43.

Since the elastic member 44 is sandwiched between the first connecting member 41 and the second connecting member 42, the elastic member 44 can perform a certain sealing function, which is beneficial to reducing the risk of water and oxygen passing through the first connecting hole 41a and the second connecting hole 42a, and is beneficial to realizing the sealing connection of the first connecting member 41 and the second connecting member 42.

In the process of riveting or after the completion of riveting, the rivet nut 43 gradually forms a protruding part 433 on one side of the second connecting piece 42 opposite to the first connecting piece 41, the protruding part 433 can generate pressure towards the direction of the first connecting piece 41 on the part of the second connecting piece 42 opposite to the first connecting hole 41a, and by arranging the elastic piece 44, the elastic piece 44 can generate pressure towards the direction of the first connecting piece 41 on the part of the second connecting piece 42 opposite to the first connecting hole 41a, so that the protruding part 433 and the elastic piece 44 generate opposite and mutually-opposed forces on the part of the second connecting piece 42 opposite to the first connecting hole 41a, thereby being beneficial to reducing the risk of deformation of the part of the second connecting piece 42 opposite to the first connecting hole 41 a.

Alternatively, the edge of the elastic member 44 in the front projection of the second connecting member 42 along the axial direction of the blind rivet nut 43 may be located within the edge of the boss 433 in the front projection of the second connecting member 42 along the axial direction of the blind rivet nut 43, or the edge of the boss 433 in the front projection of the second connecting member 42 along the axial direction of the blind rivet nut 43 may be located within the edge of the elastic member 44 in the front projection of the second connecting member 42 along the axial direction of the blind rivet nut 43, or the edge of the elastic member 44 in the front projection of the second connecting member 42 along the axial direction of the blind rivet nut 43 may be flush with the edge of the boss 433 in the front projection of the second connecting member 42 along the axial direction of the blind rivet nut 43, and may be set according to practical needs.

The elastic member 44 may be a flat pad, a conical pad, or other form of structure, and the elastic member 44 may be stainless steel, rubber, or silicone, etc.

According to the rivet structure 40 provided by the embodiment of the application, the elastic piece 44 is arranged between the second connecting piece 42 and the stop part 432 in a pressing manner, a certain supporting effect can be provided for the part, corresponding to the first connecting hole 41a, of the second connecting piece 42 through the elastic piece 44, the risk of deformation of the part, corresponding to the first connecting hole 41a, of the second connecting piece 42 is reduced, the stability of the rivet structure 40 is improved, and the reliability of the battery 10 is improved in the situation that the rivet structure 40 is applied to the battery 10.

In some embodiments, as shown in fig. 5, the elastic member 44 is pressed against the outer peripheral side of the blind rivet nut 43.

The elastic piece 44 is pressed on the outer periphery of the rivet nut 43, and since the elastic piece 44 is located in the first connecting hole 41a, the elastic piece 44 can provide a certain support for the portion of the rivet nut 43 located in the first connecting hole 41a, so that in the process of rivet connection, the risk that the protruding portion 433 cannot be formed normally due to unnecessary deformation of the rivet nut 43 in the portion of the first connecting hole 41a is reduced, and the reliability of rivet connection is improved.

In some embodiments, the edge of the boss 433 in the axial direction of the blind rivet nut 43 that is in the forward projection of the second connector 42 is located within the edge of the elastic member 44 in the axial direction of the blind rivet nut 43 that is in the forward projection of the second connector 42.

Alternatively, the edge of the projection 433 projected forward of the second connection member 42 in the axial direction of the blind rivet nut 43 may be located within the edge of the elastic member 44 projected forward of the second connection member 42 in the axial direction of the blind rivet nut 43, or the edge of the elastic member 44 projected forward of the second connection member 42 in the axial direction of the blind rivet nut 43 may be flush with the edge of the projection 433 projected forward of the second connection member 42 in the axial direction of the blind rivet nut 43.

So set up, the elastic component 44 is bigger to the holding area of second connecting piece 42, and at the in-process of riveting the connection, bellying 433 produces towards the pressure of first connecting piece 41 to second connecting piece 42, and the elastic component 44 can more steadily produce the support to the position that second connecting piece 42 corresponds with first connecting hole 41a, is favorable to further reducing the risk that second connecting piece 42 and the corresponding part of first connecting hole 41a produce deformation.

In some embodiments, as shown in fig. 6, the blind rivet nut 43 has a boss 434, and the boss 434 is located in the first coupling hole 41a and protrudes outward in the radial direction of the blind rivet nut 43.

As such, the elastic member 44 may be sleeved with the outer peripheral side of the boss 434, alternatively, the boss 434 may be ring-shaped, or the boss 434 may be fan-shaped around the rivet nut 43.

By arranging the boss 434, the structural strength of the rivet nut 43 in the first connecting hole 41a is improved, the risk that the boss 433 cannot be formed normally due to unnecessary deformation of the rivet nut 43 in the first connecting hole 41a in the rivet connection process is reduced, and the reliability of rivet connection is improved.

In some embodiments, as shown in fig. 7, the elastic member 44 includes a flat section 441 and a curved section 442, where one of the flat section 441 and the curved section 442 abuts against the stop portion 432, and the other abuts against the second connecting member 42.

The flat section 441 may increase the contact area between the elastic member 44 and the stop portion 432 or the second connecting member 42, and the curved section 442 may be formed by bending deformation during the rivet connection process, where the curved section 442 has a certain bending stress, and the bending stress can counterbalance the pressure of the stop portion 432 and the second connecting member 42 on the elastic member 44, which is beneficial to improving the pressing force of the elastic member 44 on the first connecting member 41 and the second connecting member 42, and further improving the sealing connection effect of the first connecting member 41 and the second connecting member 42.

And in the process of rivet connection, the elastic force of the elastic piece 44 changes, and the deformation of the elastic piece 44 can change according to the pressure of the bulge 433 on the second connecting piece 42, so as to realize the stress balance of the second connecting piece 42, and further be beneficial to reducing the risk of deformation of the second connecting piece 42.

In some embodiments, as shown in fig. 8, the curved section 442 has a tip 4421, the tip 4421 being spaced from the stop 432 and the second connector 42.

The elastic member 44 has a tip 4421, and the elastic member 44 has a portion with a gradual change in cross-sectional area, and the curved section 442 may be tapered, i.e., the elastic member 44 may be a tapered spring pad, for example, prior to the rivet connection. In this way, during the rivet connection process, the elastic member 44 can generate a force against the protruding portion 433 on the second connecting member 42 through the deformation generated by the bending section 442, so as to further reduce the deformation of the second connecting member 42. Since the tip 4421 is spaced apart from the stopper 432 and the second connector 42, the risk of damaging the second connector 42 or the stopper 432 by the tip 4421 can be reduced.

In some embodiments, the material of the resilient member 44 includes one of stainless steel, rubber, and silicone.

The stainless steel has larger elastic modulus and bearing capacity, is favorable for improving the supporting force of the elastic piece 44, can generate larger elastic deformation by rubber and silica gel, can generate larger elastic deformation in the process of rivet connection, and is favorable for improving the sealing performance of the first connecting piece 41 and the second connecting piece 42 after rivet connection.

In some embodiments, as shown in fig. 5 to 8, the blind rivet nut 43 further has a communication hole 43a, and the communication hole 43a communicates with the internal thread of the internal thread portion 431 and penetrates one end of the stopper portion 432 of the blind rivet nut 43.

In this way, in the process of carrying out the rivet connection, the relevant screw member is facilitated to be matched with the screw portion through the communication hole 43a, and the rivet connection process is facilitated to be carried out smoothly. And the bolts and the like may also pass through the communication holes 43a to be engaged with the screw portions, so as to achieve connection of the rivet structure 40 with other plate members and the like.

In a second aspect, the case 11 provided in the embodiment of the present application includes the rivet structure 40 provided in any one of the above embodiments.

The case 11 provided in the embodiment of the present application has the same technical effects due to the rivet structure 40 that is passed through in any of the above embodiments, and will not be described herein.

In a third aspect, the battery 10 provided in the embodiment of the present application includes the case 11 and the battery cell 30 provided in the above embodiment, and the battery cell 30 is accommodated in the case 11.

The battery 10 provided in the embodiment of the present application has the same technical effects due to the case 11 through which the above embodiment passes, and will not be described herein.

In a fourth aspect, an electrical device provided by an embodiment of the present application includes the battery 10 provided by the foregoing embodiment, where the battery 10 is used to provide electrical energy.

The power consumption device provided by the embodiment of the present application has the same technical effects due to the battery 10 provided by the above embodiment, and will not be described in detail herein.

In some embodiments, as shown in fig. 5-8, the blind rivet structure 40 includes a first connector 41, a second connector 42, a blind rivet nut 43, and an elastic member 44. The first connection member 41 has a first connection hole 41a, the second connection member 42 is provided at one side of the first connection member 41, the second connection member 42 has a second connection hole 42a, and the second connection hole 42a has a smaller aperture than the first connection hole 41 a. The rivet nut 43 is arranged in the first connecting hole 41a and the second connecting hole 42a in a penetrating mode, the rivet nut 43 comprises an internal thread portion 431, a stop portion 432 and a protruding portion 433, the stop portion 432 is abutted to one side, opposite to the second connecting piece 42, of the first connecting piece 41, the protruding portion 433 is abutted to one side, opposite to the first connecting piece 41, of the second connecting piece 42, the first connecting piece 41 and the second connecting piece 42 are clamped between the stop portion 432 and the protruding portion 433, and the internal thread portion 431 is arranged on one side, opposite to the second connecting piece 42, of the protruding portion 433. The elastic member 44 is sleeved and pressed on the outer peripheral side of the blind rivet nut 43, and the elastic member 44 is located in the first connecting hole 41a and pressed between the second connecting member 42 and the stop portion 432. The edge of the projection 433 in the axial direction of the blind rivet nut 43, which is projected forward of the second connecting member 42, is located inside the edge of the elastic member 44 in the axial direction of the blind rivet nut 43, which is projected forward of the second connecting member 42. The blind rivet nut 43 has a communication hole 43a and a boss 434, the boss 434 being located in the first coupling hole 41a and protruding outward in the radial direction of the blind rivet nut 43, the communication hole 43a communicating with the internal thread of the internal thread portion 431 and penetrating through one end of the stopper portion 432 of the blind rivet nut 43. The elastic member 44 includes a straight section 441 and a curved section 442, one of the straight section 441 and the curved section 442 abuts against the stop portion 432, and the other abuts against the second connecting member 42. The curved section 442 has a tip 4421, the tip 4421 being spaced from the stop 432 and the second connector 42.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application, and in particular, the technical features set forth in the various embodiments may be combined in any manner so 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 (11)

1. A rivet structure, comprising:

A first connecting piece having a first connecting hole;

The second connecting piece is arranged on one side of the first connecting piece and is provided with a second connecting hole, and the aperture of the second connecting hole is smaller than that of the first connecting hole;

The rivet nut is penetrated through the first connecting hole and the second connecting hole and comprises an internal thread part, a stop part and a protruding part, the stop part is abutted against one side of the first connecting piece, which is opposite to the second connecting piece, the protruding part is abutted against one side of the second connecting piece, which is opposite to the first connecting piece, so that the first connecting piece and the second connecting piece are clamped between the stop part and the protruding part, and the internal thread part is arranged on one side of the protruding part, which is opposite to the second connecting piece;

The elastic piece is sleeved on the outer peripheral side of the rivet nut, is positioned in the first connecting hole and is pressed between the second connecting piece and the stop part.

2. The blind rivet structure according to claim 1, wherein the elastic member is pressed against an outer peripheral side of the blind rivet nut.

3. The blind rivet structure of claim 1, wherein the projection is located within the edge of the second connector in the axial direction of the blind rivet nut at the edge of the second connector in the axial direction of the blind rivet nut.

4. The blind rivet structure of claim 1, wherein the blind rivet nut has a boss that is located in the first connecting hole and protrudes radially outward of the blind rivet nut.

5. The blind rivet structure according to any one of claims 1 to 4, wherein the elastic member includes a flat section and a curved section, one of the flat section and the curved section abutting against the stopper, the other abutting against the second connecting member.

6. The blind rivet structure of claim 5, wherein the curved segment has a tip that is spaced from the stop and the second connector.

7. The blind rivet structure of claim 1, wherein the material of the resilient member comprises one of stainless steel, rubber, and silicone.

8. The blind rivet structure according to claim 1, wherein the blind rivet nut further has a communication hole that communicates with the internal thread of the internal thread portion and penetrates one end of the stopper portion of the blind rivet nut.

9. A box comprising a rivet structure as defined in any one of claims 1 to 8.

10. A battery, comprising:

The case of claim 9;

And the battery monomer is accommodated in the box body.

11. An electrical device comprising a battery as claimed in claim 10, said battery being arranged to provide electrical energy.