CN217281090U - Fastener, battery and consumer - Google Patents

Abstract

The application discloses a fastener, a battery and electric equipment, wherein the fastener comprises a cylinder body, a first end and a second end, wherein the cylinder body extends along the axial direction of the fastener; the fixing plate is provided with a first surface on one side facing the cylinder, and the first surface is connected with one end of the cylinder along the axial direction; and the positioning part protrudes out of the first surface and surrounds the outer side of the column body, and the size of the protrusion of the positioning part out of the first surface is smaller than that of the column body in the axial direction. The fastener, the battery and the electric equipment of this application embodiment can promote the firm in connection nature between the inside part of battery and the battery box, promote the stability of battery operation.

Description

Fastener, battery and consumer

Technical Field

The application relates to the field of batteries, in particular to a fastener, a battery and electric equipment.

Background

Batteries are widely used in electronic devices such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, electric tools, and the like. As the market for application of batteries becomes wider, the safety of batteries has become one of the important points of research.

At present, the various parts inside the battery are connected by fasteners, and the connection firmness and stability of the fasteners become one of the important research points of those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application provides a fastener, a battery and an electric device, which can improve the connection firmness between the parts inside the battery and the battery box body and improve the stability of the operation of the battery.

In a first aspect, the present application provides a fastener comprising:

a cylinder extending axially along itself;

the fixing plate is provided with a first surface on one side facing the cylinder, and the first surface is connected with one end of the cylinder along the axial direction; and

the positioning part protrudes out of the first surface and surrounds the outer side of the column body, and in the axial direction, the size of the protrusion of the positioning part out of the first surface is smaller than that of the column body.

In the technical scheme of this application embodiment, the fixed plate is used for being connected with the box of battery, and the cylinder is used for providing the tie point for adapting unit in order to be connected between adapting unit and the fastener, and foretell structure is used for realizing being connected between box and the adapting unit. Through set up location portion on the fastener, can realize firm connection between fixed plate and the box, the displacement between frictional force in order to reduce fixed plate and the box between increase fixed plate and the box. Further improving the stability and the firmness of the connection between the fastener and the box body.

In some embodiments, the fastener is provided with a recess, the recess being recessed from an end of the column facing away from the fixation plate. Through setting up the concave part and providing accommodation space for adapting unit, increase the area of being connected between adapting unit and the cylinder, promote the fastness of being connected of adapting unit and fastener.

In some embodiments, the side wall of the recess is threaded. Through set up the screw thread at the concave part, realize the detachable connection between adapting unit and the fastener, promote the flexibility of the application of fastener.

In some embodiments, the positioning portion, the first surface and the column body enclose to form a groove. Foretell recess is used for holding sealed glue or sealing washer etc. has promoted the stability of being connected between fixed plate and the box.

In some embodiments, the positioning portion includes a plurality of positioning teeth spaced apart along a circumference of the cylinder. Through setting up the surface of location tooth with the embedding box, carry out fixed connection between fixed plate and the box, increased the frictional resistance between fixed plate and the box surface, avoid the fixed plate along the rotation of box surface.

In some embodiments, the cross-section of the positioning teeth decreases in a direction toward the cylinder. Foretell structure, the location tooth of being convenient for inserts the surface of box, has promoted the efficiency of location portion installation.

In some embodiments, the positioning portion further includes a first annular portion protruding from the first surface and surrounding the outer side of the column body, and the plurality of positioning teeth are located on a side of the first annular portion facing away from the first surface. In foretell structure, through setting up first annular portion, for sealed glue or sealing washer provide confined holding tank, prevent sealed glue and spill over, guarantee sealed effect.

In some embodiments, the first annular portion is disposed coaxially with the cylinder. In foretell structure, guarantee sealed glue around the axial setting of cylinder, guarantee that cylinder and box are connected the equilibrium of atress.

In some embodiments, the fixing plate further includes a second annular portion disposed around an outer side of the positioning portion, and a size of the second annular portion protruding from the first surface is smaller than a size of the positioning portion protruding from the first surface in the axial direction. Through setting up second annular portion to the minimum distance between restriction location portion and the box, the size of control location tooth embedding to the box surface promotes the accuracy and the efficiency of installation.

In some embodiments, the second annular portion is disposed coaxially with the positioning portion. The technical scheme can carry out balanced spacing on the distance of the positioning part embedded into the box body in the circumferential direction of the positioning part, and ensures the balance of stress between the positioning part and the box body so as to ensure the stability of connection.

In some embodiments, an end surface of the second annular portion facing away from the first surface is parallel to the first surface. By means of the technical scheme, the second annular part limiting function can be guaranteed to be evenly applied to the first surface, and limiting accuracy is guaranteed.

In some embodiments, the outer wall of the column body is provided with a convex rib, and two ends of the convex rib extend along the axial direction of the column body. Through setting up protruding muscle, prevent that the relative plate body of cylinder from rotating, promote the stability that fastener and box are connected.

In some embodiments, the number of the ribs is multiple, and the multiple ribs are uniformly arranged at intervals along the circumferential direction of the column body. Set up a plurality of protruding muscle, further promoted the stability that fastener and box are connected.

In a second aspect, the present application provides a battery comprising the fastener of the above embodiment and a case, the fastener being mounted to the case.

In some embodiments, a seal is provided between the first surface of the fastener and the case. Through setting up the sealing member, intensity and stability of being connected between fastener and the box have been promoted.

In a third aspect, the present application provides a powered device, which includes the battery in the above embodiments, and the battery is used for providing electric energy.

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

Drawings

Features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

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

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

fig. 3 is an exploded view of a battery cell according to some embodiments of the present disclosure;

FIG. 4 is a perspective view of a fastener according to some embodiments of the present application;

FIG. 5 is a cross-sectional structural schematic view of a fastener according to some embodiments of the present application;

FIG. 6 is an enlarged schematic view of FIG. 5 taken at circle A;

FIG. 7 is a schematic top view of a fastener according to some embodiments of the present application;

FIG. 8 is a schematic view of a fastener of some embodiments of the present application mounted to a housing.

Detailed description of the reference numerals

1000. A vehicle;

100. a battery; 200. a controller; 300. a motor;

10. a box body; 11. a first portion; 12. a second portion;

20. a battery cell; 21. an end cap assembly; 22. a housing; 23. a battery cell assembly; 24. a pressure relief mechanism; 25. an electrode terminal;

30. a fastener; 301. a cylinder; 302. a fixing plate; 303. a positioning part; 304. a first surface; 305. a recess; 306. a groove; 307. positioning teeth; 308. a first annular portion; 309. a second annular portion; 310. an end face; 311. a rib is protruded; 312. sealing the space; 313. an anti-overflow glue groove.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing the association object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

With the vigorous development of the new energy industry and the further popularization of new energy electric vehicles, the safety performance requirements of power batteries are also more emphasized. The battery is generally provided with a battery box body outside, and the battery box body needs to accommodate functional components, such as a high voltage box, a control box, a sampling box and the like, besides a battery cell for providing electric energy. The functional components need to be fixed on the battery box body so as to ensure the normal operation of all functions of the battery.

During the research, the inventors found that if the functional part is directly connected to the case, the connection stability between the functional part and the case may be degraded as the battery moves or when the environment such as temperature, pressure, etc. is changed. Therefore, the box body is required to be provided with the fastening piece firstly, the fastening piece is firmly connected with the box body, and then the connecting piece on the functional component is connected with the fastening piece again, so that the stable connection between the functional component and the box body can be ensured, and the normal operation of each function of the battery is ensured.

Based on the above considerations, in order to improve the stable connection between the functional component and the battery box and ensure the stability of the battery operation, the inventor researches and designs a fastening piece, which includes a column, a fixing plate and a positioning portion. The column body extends along the axial direction of the column body; one side of the fixing plate facing the cylinder is provided with a first surface, and the first surface is connected with one end of the cylinder along the axial direction; the positioning part protrudes out of the first surface and surrounds the outer side of the column body, and in the axial direction, the size of the positioning part protruding out of the first surface is smaller than that of the column body.

In the technical scheme of the embodiment of the application, the fixing plate is used for being connected with the battery box body, the cylinder is used for providing a connection point for the connecting part so as to connect the connecting part with the fastener, and the structure is used for realizing the connection between the box body and the connecting part. Through set up location portion on the fastener, can realize firm the connection between fixed plate and the box, displacement between frictional force in order to reduce fixed plate and the box between increase fixed plate and the box further promotes stability and firm degree of being connected between fastener and the box.

The fastener and the battery disclosed by the embodiment of the application can be used in electric equipment such as vehicles, ships or aircrafts, but are not limited to the electric equipment. The power supply system who possesses this consumer of fastener, battery etc. that this application is disclosed can be used, like this, can promote the stability between functional unit and the battery box in the battery, effectively promotes the performance of battery, prolongs the life-span of battery, guarantees the operating stability of consumer.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric device can be but is not limited to a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments take an electric device of an embodiment of the present application as an example of a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present disclosure. The vehicle 1000 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for starting, navigation, and operational power requirements while the vehicle 1000 is traveling.

In some embodiments of the present application, the battery 100 may be used not only as an operating power source of the vehicle 1000, but also as a driving power source of the vehicle 1000, instead of or in part of fuel or natural gas, to provide driving power for the vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present disclosure. The battery 100 includes a case 10 and a battery cell 20, and the battery cell 20 is accommodated in the case 10. The case 10 is used to provide a receiving space for the battery cells 20, and the case 10 may have various structures. In some embodiments, the case 10 includes a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 cover each other, and the first portion 11 and the second portion 12 together define a receiving space for receiving the battery cell 20. The second part 12 may be a hollow structure with one open end, the first part 11 may be a plate-shaped structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a containing space; the first portion 11 and the second portion 12 may be both hollow structures with one side open, and the open side of the first portion 11 may cover the open side of the second portion 12. Of course, the case 10 formed by the first and second portions 11 and 12 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In the battery 100, the number of the battery cells 20 may be multiple, and the multiple battery cells 20 may be connected in series or in parallel or in series-parallel, where in series-parallel refers to both series connection and parallel connection among the multiple battery cells 20. The plurality of battery cells 20 may be directly connected in series or in parallel or in series-parallel, and the whole body formed by the plurality of battery cells 20 is accommodated in the case 10. Of course, the battery 100 may also be formed by connecting a plurality of battery cells 20 in series, in parallel, or in series-parallel to form a battery module, and then connecting a plurality of battery modules in series, in parallel, or in series-parallel to form a whole, and accommodating the whole in the case 10. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for achieving electrical connection between the plurality of battery cells 20.

Wherein each battery cell 20 may be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell 20 may be cylindrical, flat, rectangular parallelepiped, or other shape.

Referring to fig. 3, fig. 3 is an exploded schematic view of a battery cell 20 according to some embodiments of the present disclosure. The battery cell 20 refers to the smallest unit constituting the battery. Referring to fig. 3, the battery cell 20 includes an end cap assembly 21, a housing 22, a battery cell assembly 23, and other functional components.

The end cap assembly 21 refers to a member that covers an opening of the case 22 to insulate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap assembly 21 may be adapted to the shape of the housing 22 to fit the housing 22. Alternatively, the end cap assembly 21 may be made of a material (e.g., an aluminum alloy) having certain hardness and strength, so that the end cap assembly 21 is not easily deformed when being extruded and collided, and thus the battery cell 20 may have higher structural strength and the safety performance may be improved. The end cap assembly 21 may be provided with functional components such as the electrode terminals 25. The electrode terminals 25 may be used to electrically connect with the electric core assembly 23 for outputting or inputting electric power of the battery cells 20. In some embodiments, the end cap assembly 21 may further include a pressure relief mechanism 24 for relieving the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value. The material of the end cap assembly 21 may also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in this embodiment. In some embodiments, insulation may also be provided on the inside of the end cap assembly 21, which may be used to isolate the electrical connection components within the housing 22 from the end cap assembly 21 to reduce the risk of short circuits. Illustratively, the insulator may be plastic, rubber, or the like.

The case 22 is a component for mating with the end cap assembly 21 to form the internal environment of the battery cell 20. The internal environment formed may be used to house, among other things, the cell assembly 23, electrolyte, and other components. The housing 22 and the end cap assembly 21 may be separate components, and an opening may be provided in the housing 22, and the opening may be covered by the end cap assembly 21 to form the internal environment of the battery cell 20. Without limitation, the end cap assembly 21 and the housing 22 may be integrated, and specifically, the end cap assembly 21 and the housing 22 may form a common connecting surface before other components are inserted into the housing, and when it is required to enclose the inside of the housing 22, the end cap assembly 21 covers the housing 22. The housing 22 may be a variety of shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 may be determined according to the specific shape and size of the electric core assembly 23. The material of the housing 22 may be various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in the embodiments of the present invention.

The cell assembly 23 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrical core assemblies 23 may be contained within the housing 22. The core assembly 23 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The parts of the positive plate and the negative plate with the active substances form the main body part of the electric core assembly, and the parts of the positive plate and the negative plate without the active substances form the tabs respectively. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or at both ends of the main body portion, respectively. During the charging and discharging process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs are connected with the electrode terminals to form a current loop.

Referring to fig. 4-8, fig. 4 is a perspective view of a fastener 30 according to some embodiments of the present disclosure; FIG. 5 is a cross-sectional structural schematic view of a fastener 30 of some embodiments of the present application; FIG. 6 is an enlarged schematic view of FIG. 5 at circle A; FIG. 7 is a schematic top view of a fastener 30 according to some embodiments of the present application; FIG. 8 is a schematic view of the fastener 30 of some embodiments of the present application mounted to the housing 10.

The embodiment of the present application provides a fastener 30, as shown in fig. 4, the fastener 30 includes a column 301, a fixing plate 302, and a positioning portion 303. The cylinder 301 extends axially along itself. The side of the fixing plate 302 facing the cylinder 301 has a first surface 304, and the first surface 304 is connected with one end of the cylinder 301 along the axial direction; the positioning part 303 protrudes from the first surface 304 and surrounds the outer side of the column 301, and the size of the positioning part 303 protruding from the first surface 304 is smaller than that of the column 301 in the axial direction.

The fastener 30 is used to connect with a mating connector to achieve a secure connection of the two parts to be assembled. One of the two parts to be assembled may be a functional part and the other may be a fixed base plate or a plate surface. Fasteners 30 are typically provided on a fixed base or deck to provide anchor points for the connectors. In the process of connecting the fastening member 30 to the connecting member, the fastening member 30 may be deformed to press the fixing base or the panel, so as to improve the strength of the connection with the fixing base or the panel. Illustratively, the fastener 30 may be an anchor or a blind rivet bolt. The fastener 30 may be connected with a connecting rod or a bolt. The fastener 30 may be made of a material having a strength to secure the fastener 30 to a fixed base or panel.

The cylinder 301 is used for connection with a connector. The cross section of the column 301 perpendicular to the axial direction may be square or circular, and the outer surface of the column 301 may be provided with a screw thread to facilitate the connection with the connector. The fixing plate 302 has a plate-shaped structure, and the first surface 304 of the fixing plate 302 may be disposed perpendicular to the axial direction of the cylinder 301. The positioning portion 303 is disposed on the fixing plate 302, and an extending direction of the positioning portion 303 may be disposed parallel to an axial direction of the column 301.

In the solution of the embodiment of the present application, the fixing plate 302 is used to connect with the case 10 of the battery 100. By providing the positioning portion 303 on the fastening member 30, a firm connection between the fixing plate 302 and the case 10 can be achieved, and the friction between the fixing plate 302 and the case 10 is increased to reduce the displacement between the fixing plate 302 and the case 10. Further improving the stability and firmness of the connection between the fastener 30 and the housing 10.

In some embodiments of the present application, a recess 305 is provided on the fastener 30, and the recess 305 is recessed from an end of the cylinder 301 facing away from the fixing plate 302. The cross-sectional shape of the recess 305 may be square or circular. The concave part 305 provides a containing space for the connecting part, so that the connecting area between the connecting part and the column 301 is increased, and the connecting firmness of the connecting part and the fastener 30 is improved.

In some embodiments of the present application, the sidewalls of the recess 305 are threaded. The connector may be a threaded rod that is threadedly coupled to the recess 305. By providing the recess 305 with a thread, a detachable connection between the connector and the fastener 30 is achieved, which improves the flexibility of application of the fastener 30.

In some embodiments of the present application, as shown in fig. 5, the positioning portion 303, the first surface 304 and the column 301 enclose a groove 306. The groove 306 is used for accommodating sealant or a sealing ring, and the like, so that the stability of the connection between the fixing plate 302 and the box body 10 is improved.

In some embodiments of the present application, the positioning portion 303 includes a plurality of positioning teeth 307 spaced apart along the circumference of the cylinder 301. By providing the positioning teeth 307 to engage with the surface of the housing 10, the fixing plate 302 is fixedly connected to the housing 10, and the friction resistance between the fixing plate 302 and the surface of the housing 10 is increased, so as to prevent the fixing plate 302 from rotating along the surface of the housing 10.

In some embodiments of the present application, as shown in FIG. 6, the cross-section of the positioning teeth 307 decreases in a direction toward the cylinder 301. The positioning teeth 307 have a pointed end, which facilitates the insertion of the positioning teeth 307 into the surface of the case 10, and enhances the strength of the connection between the positioning teeth 307 and the case 10, and also improves the efficiency of the installation of the positioning part 303.

In some embodiments of the present application, the positioning portion 303 further includes a first annular portion 308, the first annular portion 308 protrudes from the first surface 304 and surrounds the outer side of the cylinder 301, and the plurality of positioning teeth 307 are located on a side of the first annular portion 308 facing away from the first surface 304. As shown in fig. 5, a closed glue overflow preventing groove 313 is formed among the first annular portion 308, the first surface 304 and the column 301, and the sealant is disposed in the glue overflow preventing groove 313 to prevent the sealant from overflowing.

In the structure, the first annular part 308 is arranged to provide a closed accommodating groove for the sealant or the sealing ring, so that the sealant is prevented from overflowing, and the sealing effect is ensured.

In some embodiments of the present application, the first annular portion 308 is disposed coaxially with the cylinder 301. In the structure, the sealant is ensured to be arranged around the axial direction of the column body 301, and the connection stress balance between the column body 301 and the box body 10 is ensured.

In some embodiments of the present application, as shown in fig. 5 and 7, the fixing plate 302 further includes a second annular portion 309 disposed around an outer side of the positioning portion 303, and a protruding size of the second annular portion 309 from the first surface 304 is smaller than a protruding size of the positioning portion 303 from the first surface 304 in an axial direction. By providing the second annular portion 309 to limit the minimum distance between the positioning portion 303 and the case 10, the size of the positioning teeth 307 embedded in the surface of the case 10 is controlled, and the mounting accuracy and efficiency are improved.

Alternatively, the protrusion of the second annular portion 309 from the first surface 304 is sized according to the depth of the positioning teeth 307 inserted into the surface of the housing 10. It will be understood that the greater the size of the projection of the second annular portion 309, the less the depth of insertion of the positioning tooth 307 into the surface of the tank 10 and vice versa. Therefore, the strength of the connection of the positioning teeth 307 to the case 10 can be controlled by controlling the size of the second annular portion 309 protruding from the first surface 304. The size of the protrusion of the second annular portion 309 from the first surface 304 may be determined by calculation based on the strength of the connection between the fastener 30 and the housing 10, and is not limited herein.

In some embodiments of the present application, second annular portion 309 is disposed coaxially with locator portion 303. According to the technical scheme, the distance of the positioning part 303 embedded into the box body 10 can be balanced and limited along the circumferential direction of the positioning part 303, and the balance of stress between the positioning part 303 and the box body 10 is guaranteed so as to guarantee the stability of connection.

In some embodiments of the present application, an end face 310 of the second annular portion 309 facing away from the first surface 304 is parallel to the first surface 304. By adopting the technical scheme, the limiting function of the second annular part 309 can be ensured to be evenly acted on the first surface 304, and the limiting accuracy is ensured.

In some embodiments, referring to fig. 4 and fig. 5, the outer wall of the cylinder 301 is provided with a protruding rib 311, and two ends of the rib 311 extend along the axial direction of the cylinder 301. By arranging the convex rib 311, the column 301 is prevented from rotating relative to the plate body, and the stability of the connection of the fastener 30 and the box body 10 is improved.

In some embodiments of the present application, the number of the ribs 311 is plural, and the plural ribs 311 are uniformly spaced along the circumference of the cylinder 301. The plurality of ribs 311 are provided to further improve the stability of the connection of the fastener 30 to the case 10.

The embodiment of the present application also provides a battery 100, which includes the fastener 30 and the case 10 in any of the above embodiments, and as shown in fig. 8, the fastener 30 is mounted to the case 10.

In some embodiments of the present application, a seal is provided between the first surface 304 of the fastener 30 and the enclosure 10. The sealing element may be a sealing glue or a sealing ring. By providing a seal, the strength and stability of the connection between the fastener 30 and the housing 10 is improved.

In some embodiments of the present application, a first annular portion 308 and a second annular portion 309 are also provided in the fastener 30. The first annular portion 308 protrudes from the first surface 304 and surrounds the outer side of the cylinder 301, and the plurality of positioning teeth 307 are located on a side of the first annular portion 308 facing away from the first surface 304. The second annular portion 309 is disposed around the outer side of the positioning portion 303, and in the axial direction, the protruding size of the second annular portion 309 from the first surface 304 is smaller than the protruding size of the positioning portion 303 from the first surface 304.

As shown in FIG. 8, after the fastener 30 is mounted to the case 10, the first surface 304, the post 301, the case 10 and the first annular portion 308 enclose a sealed space 312 for containing sealant. The volume of the sealed space 312 is controlled by adjusting the size of the second annular portion 309 protruding from the first surface 304 to control the minimum distance between the first surface 304 and the box 10, so as to control the volume of the sealing member in the sealed space 312. By adopting the technical scheme, the size of the second annular part 309 protruding from the first surface 304 can be controlled to control the volume of the sealing element, so that the purpose of adjusting the strength of the connection between the fastener 30 and the box body 10 is achieved.

The embodiment of the application provides a fastener 30, and the fastener 30 comprises a column body 301, a fixing plate 302 and a positioning part 303. The cylinder 301 extends axially along itself. The side of the fixing plate 302 facing the cylinder 301 has a first surface 304, and the first surface 304 is connected with one end of the cylinder 301 along the axial direction; the positioning part 303 protrudes from the first surface 304 and surrounds the outer side of the column 301, and the size of the positioning part 303 protruding from the first surface 304 is smaller than that of the column 301 in the axial direction.

The fastener 30 is provided with a recess 305, and the recess 305 is recessed from an end of the cylinder 301 facing away from the fixing plate 302. The side wall of the recess 305 is threaded. The positioning portion 303 includes a plurality of positioning teeth 307 spaced apart along the circumferential direction of the cylinder 301. The cross-section of the positioning teeth 307 decreases in a direction towards the cylinder 301. The positioning portion 303 further includes a first annular portion 308, the first annular portion 308 being disposed coaxially with the cylinder 301. The first annular portion 308 protrudes from the first surface 304 and surrounds the outer side of the cylinder 301, and the plurality of positioning teeth 307 are located on a side of the first annular portion 308 facing away from the first surface 304.

The fixing plate 302 further includes a second annular portion 309 disposed around an outer side of the positioning portion 303, the second annular portion 309 being disposed coaxially with the positioning portion 303. In the axial direction, the protruding size of the second annular portion 309 from the first surface 304 is smaller than the protruding size of the positioning portion 303 from the first surface 304. An end face 310 of the second annular portion 309 facing away from the first surface 304 is parallel to the first surface 304.

The fastener 30 in the present application can effectively improve the stability and the firmness of the connection between the components in the battery 100 and the box 10, and ensure the normal operation of the battery 100.

The present application also provides an electric device, which includes the battery 100 in the above embodiments, and the battery 100 is used for providing electric energy. The powered device may be any of the aforementioned devices or systems that employ battery 100. The electric equipment in the application is provided with the battery 100, the fastener 30 is arranged in the battery 100, the fastening connection between each component in the battery 100 and the box body 10 is ensured, and the stability of the battery 100 is ensured so as to ensure the stable operation of the electric equipment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (15)

1. A fastener (30), comprising:

a column (301) extending axially along itself;

a fixing plate (302) having a first surface (304) on a side facing the cylinder (301), the first surface (304) being connected to one end of the cylinder (301) in the axial direction; and

a positioning part (303) protruding from the first surface (304) and surrounding the outside of the column body (301), the positioning part (303) protruding from the first surface (304) in the axial direction by a size smaller than that of the column body (301),

the fastener (30) is provided with a recess (305), and the recess (305) is recessed from one end of the column body (301) which is far away from the fixing plate (302).

2. Fastener (30) according to claim 1, characterized in that the side walls of the recess (305) are provided with a thread.

3. The fastener (30) of claim 1, wherein the locating portion (303), the first surface (304), and the post (301) enclose a groove (306).

4. The fastener (30) according to any one of claims 1 to 3, wherein the locating portion (303) comprises a plurality of locating teeth (307) distributed at intervals along the circumference of the post (301).

5. Fastener (30) according to claim 4, characterized in that the cross section of the positioning teeth (307) decreases in a direction towards the cylinder (301).

6. The fastener (30) as claimed in claim 5, wherein the locating portion (303) further comprises a first annular portion (308), the first annular portion (308) protruding from the first surface (304) and surrounding the outside of the post (301), and a plurality of locating teeth (307) are located on a side of the first annular portion (308) facing away from the first surface (304).

7. The fastener (30) of claim 6, wherein the first annular portion (308) is disposed coaxially with the post (301).

8. The fastener (30) according to claim 4, wherein the fixing plate (302) further comprises a second annular portion (309) provided around an outer side of the positioning portion (303), and a dimension of the second annular portion (309) protruding from the first surface (304) is smaller than a dimension of the positioning portion (303) protruding from the first surface (304) in the axial direction.

9. The fastener (30) according to claim 8, wherein the second annular portion (309) is arranged coaxially with the positioning portion (303).

10. Fastener (30) according to claim 9, characterized in that the end face (310) of the second annular portion (309) facing away from the first surface (304) is parallel to the first surface (304).

11. A fastener (30) according to any one of claims 1 to 3, wherein the outer wall of the cylindrical body (301) is provided with a protruding rib (311), and both ends of the rib (311) extend axially along the cylindrical body (301).

12. The fastener (30) as claimed in claim 11, wherein the number of the ribs (311) is plural, and the plural ribs (311) are arranged at regular intervals in the circumferential direction of the column body (301).

13. A battery (100) comprising a fastener (30) as claimed in any one of claims 1 to 12 and a case (10), the fastener (30) being mounted to the case (10).

14. The battery (100) of claim 13, wherein a seal is provided between the first surface (304) of the fastener (30) and the case (10).

15. An electric consumer, characterized in that the consumer comprises a battery (100) according to claim 13 or 14, the battery (100) being adapted to provide electric energy.

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