CN219733860U - Rivet bolt, battery and power utilization device - Google Patents

Abstract

The utility model provides a rivet bolt, a battery and an electric device, wherein the rivet bolt comprises a rivet sleeve, a first sealing layer and a screw rod, a flange in the rivet sleeve is wound on the outer peripheral surface of a main body, the flange is provided with a first surface and a second surface which are opposite along the axial direction of the rivet sleeve, the main body protrudes from the first surface along the axial direction, the second sealing layer is fixed on the first surface, the screw rod is inserted into a connecting hole and connected with the main body, and at least part of the screw rod protrudes from the second surface along the axial direction. Through the structure, the first sealing layer on the rivet bolt flange can seal the gap between the flange and the to-be-riveted piece, so that the riveting hole of the to-be-riveted piece is sealed, and the rivet bolt has a good sealing effect.

Description

Rivet bolt, battery and power utilization device

Technical Field

The utility model relates to the technical field of batteries, in particular to a rivet bolt, a battery and an electric device.

Background

The battery has the advantages of high specific energy, high power density and the like, and is widely used in electronic equipment and vehicles, such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric tools and the like.

In order to improve the stability of the operation of the battery, the battery is generally provided with a sealing structure. How to improve the sealing performance of a battery has been an important focus of the person skilled in the art.

Disclosure of Invention

In view of the above problems, the present utility model provides a rivet bolt, a battery and an electric device, which have a good sealing effect.

In a first aspect, some embodiments of the present utility model provide a blind rivet bolt, where the blind rivet bolt includes a blind rivet sleeve, a first sealing layer, and a screw, the blind rivet sleeve includes a main body and a flange, the main body is provided with a connection hole, the flange is wound around an outer peripheral surface of the main body, the flange has a first surface and a second surface opposite to each other along an axial direction of the blind rivet sleeve, and the main body protrudes from the first surface along the axial direction; the first sealing layer is fixed on the first surface; the screw rod is inserted into the connecting hole and is connected to the inner wall of the connecting hole through welding, and at least part of the screw rod protrudes out of the second surface along the axial direction.

Through the structure, the first sealing layer on the rivet bolt flange can seal the gap between the flange and the to-be-riveted piece, so that the riveting hole of the to-be-riveted piece is sealed, and the rivet bolt has a good sealing effect.

According to the rivet bolt provided by some embodiments of the utility model, the main body comprises the connecting part and the weak part, the weak part is connected between the flange and the connecting part, the connecting hole penetrates through the weak part and extends to the inside of the connecting part, the screw is fixed on the connecting part, and when the rivet sleeve is subjected to external force, the weak part deforms before the connecting part.

According to the rivet bolt provided by some embodiments of the utility model, the wall thickness of the weak portion is smaller than that of the connecting portion, so that the structural strength of the weak portion is lower than that of the connecting portion, and the weak portion can deform before the connecting portion.

According to the rivet bolt provided by some embodiments of the utility model, a screw is welded on a connecting part and forms a welding part, and the welding part is exposed out of the outer peripheral surface of the connecting part; the rivet bolt further comprises a second sealing layer, the second sealing layer is connected to the connecting portion and covers the welding portion, the second sealing layer can seal cracks or leaks of the welding portion, the possibility of leakage or gas leakage of the welding portion between the screw and the connecting portion is reduced, and the sealing effect of the rivet bolt is improved.

According to the rivet bolt provided by some embodiments of the utility model, the connecting hole is provided with a sealing structure, and the sealing structure is used for sealing a gap between the screw rod and the inner wall of the connecting hole.

According to the rivet bolt provided by some embodiments of the utility model, the sealing structure is positioned between the screw and the inner wall of the connecting hole at the connecting part, so that the sealing structure is not deformed when the weak part is deformed, and the sealing effect of the sealing structure is improved.

According to the rivet bolt provided by some embodiments of the utility model, the screw is connected to the connecting part through threads, so that the firmness of connection between the screw and the connecting part is improved.

According to the rivet bolt provided by some embodiments of the present utility model, the connecting hole penetrates through the main body along the axial direction, and the flange is located at one end of the rivet sleeve along the axial direction; the screw rod comprises a screw rod head and a rod part, wherein the screw rod head is positioned at one end, far away from the flange, of the main body along the axial direction and is propped against the main body, the rod part is connected with the screw rod head and penetrates through the connecting hole, so that when the screw rod is pulled, the screw rod head can transmit acting force to the rivet pulling sleeve through propping, and the acting force can be better transmitted between the screw rod and the rivet pulling sleeve.

In a second aspect, some embodiments of the present utility model provide a battery, where the battery includes a first case, a second case, a battery cell, a connecting piece, and the rivet bolt provided in any one of the foregoing embodiments, and the second case and the first case are mutually covered and define an accommodating space; the battery unit is accommodated in the accommodating space, the rivet sleeve is riveted on the box wall of the first box body, and the first sealing layer of the rivet bolt is clamped between the flange of the rivet bolt and the box wall; the connecting piece is connected with the screw rod so as to fix the second box body to the first box body.

In a third aspect, some embodiments of the present utility model provide an electric device, where the electric device includes a battery provided by the foregoing technical solution, and the battery is used to provide electric energy.

The technical scheme provided by the embodiment of the disclosure at least brings the following beneficial effects:

the utility model provides a rivet bolt which comprises a rivet sleeve, a first sealing layer and a screw rod, wherein a flange in the rivet sleeve is wound on the outer peripheral surface of a main body, the flange is provided with a first surface and a second surface which are opposite along the axial direction of the rivet sleeve, the main body axially protrudes out of the first surface, the second sealing layer is fixed on the first surface, the screw rod is inserted into a connecting hole and connected with the inner wall of the connecting hole, and at least part of the screw rod axially protrudes out of the second surface. Through the structure, the first sealing layer on the rivet bolt flange can seal the gap between the flange and the to-be-riveted piece, so that the riveting hole of the to-be-riveted piece is sealed, and the rivet bolt has a good sealing effect.

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

Drawings

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

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

FIG. 2 is a split view of a battery provided in some embodiments of the present utility model;

FIG. 3 is a schematic view illustrating an internal structure of a blind rivet according to some embodiments of the present utility model;

FIG. 4 is a schematic diagram of a rivet bolt according to some embodiments of the present utility model;

fig. 5 is a schematic structural diagram of a blind rivet bolt according to some embodiments of the present utility model when connecting a first case and a second case.

Reference numerals in the specific embodiments are as follows:

1. riveting a sleeve; 11. a main body; 110. a connection hole; 111. a connection part; 112. a weak portion; 12. a flange; 121. a first surface; 122. a second surface; 2. a first sealing layer; 3. a screw; 4. a welding part; 5. a second sealing layer; 6. a sealing structure; 7. a screw head; 10. a case; 101. a first case; 102. a second case; 20. a battery cell; 1000. a vehicle; 100. a battery; 200. a controller; 300. a motor; 400. a rivet bolt; 500. and a connecting piece.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

It should be noted that unless otherwise indicated, technical or scientific terms used in the embodiments of the present utility model should be given the ordinary meanings as understood by those skilled in the art to which the embodiments of the present utility model belong.

In the description of the embodiments of the present utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

Furthermore, the technical terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more unless explicitly defined otherwise.

In the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Currently, the more widely the battery is used in view of the development of market situation. The battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, as well as a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the battery application field, the market demand thereof is also continuously expanding.

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

The battery cell may be a secondary battery cell, and the secondary battery cell refers to a battery cell that can activate an active material by charging after discharging the battery cell and continue to use.

The battery cell can be lithium ion battery cell, sodium lithium ion battery cell, lithium metal battery cell, sodium metal battery cell, lithium sulfur battery cell, magnesium ion battery cell, nickel-hydrogen battery cell, nickel-cadmium battery cell, lead storage battery cell, etc.

In order to improve the stability of the operation of the battery, the battery is generally provided with a sealing structure, which requires a case having a thin plate structure in the battery to have good sealability. Because the wall thickness of the box body is thinner, the riveting bolt is widely applied, but the sealing effect of the existing riveting bolt is poor.

In order to enable a riveting bolt to have a good sealing effect, the embodiment of the utility model provides a blind rivet bolt, which comprises a blind rivet sleeve, a first sealing layer and a screw rod, wherein a flange in the blind rivet sleeve is wound on the outer peripheral surface of a main body, the flange is provided with a first surface and a second surface which are opposite along the axial direction of the blind rivet sleeve, the main body axially protrudes from the first surface, the second sealing layer is fixed on the first surface, the screw rod is inserted into a connecting hole and connected with the main body, and at least part of the screw rod axially protrudes from the second surface. Through the structure, the first sealing layer on the rivet bolt flange can seal the gap between the flange and the to-be-riveted piece, so that the riveting hole of the to-be-riveted piece is sealed, and the rivet bolt has a good sealing effect.

The rivet bolt disclosed by the embodiment of the utility model is suitable for batteries and power utilization devices using the batteries. The blind rivet bolt may be used, but is not limited to, for connecting a box structure in a battery, but may also be used for connecting other devices in a battery. The blind rivet bolt disclosed by the embodiment of the utility model can be used for fixing parts in a battery, but is not limited to be used for connecting and fixing other parts in products such as vehicles, airplanes, ships, electronic equipment, electric tools and the like.

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 utility model does not limit the electric device in particular.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present utility model as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the utility model. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery 100 is provided in the interior of 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 be used as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

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

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present utility model. The battery 100 includes a case 10 and a battery cell 20, and the battery cell 20 is accommodated in the case 10. Wherein the case 10 is used to provide an accommodation space for the battery cells 20. The number of the battery cells 20 in the battery 100 may be plural, and the plural battery cells 20 may be connected in series, parallel, or series-parallel, and series-parallel refers to that the plural battery cells 20 are connected in both series and parallel. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 20 is accommodated in the box 10; of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells 20 in series or parallel or series-parallel connection, and a plurality of battery modules are then connected in series or parallel or series-parallel connection to form a whole and are accommodated in the case 10.

The case 10 may include a first case 101 and a second case 102, the first case 101 and the second case 102 being covered with each other to define a placement space for accommodating the battery cells 20. The first casing 101 and the second casing 102 may be various shapes, such as a rectangular parallelepiped, a cylinder, and the like. The first case 101 may have a hollow structure with one side opened, and the second case 102 may have a hollow structure with one side opened, and the open side of the second case 102 is closed to the open side of the first case 101 to form the case 10 having a space for placement.

The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between the plurality of battery cells 20.

Wherein each battery cell 20 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cell 20 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Some embodiments of the present utility model provide a blind rivet bolt that may be used to connect the first case 101 and the second case 102 in the foregoing embodiments. Of course, the blind rivet bolts can also be used to connect other components. For simplicity of description, the description will be given below taking a rivet bolt to connect the first case 101 and the second case 102 as an example.

As shown in fig. 3, the rivet bolt comprises a rivet sleeve 1, a first sealing layer 2 and a screw 3, wherein the rivet sleeve 1 comprises a main body 11 and a flange 12, the main body 11 is provided with a connecting hole 110, the flange 12 is wound on the outer peripheral surface of the main body 11, the flange 12 is provided with a first surface 121 and a second surface 122 which are opposite along the axial direction of the rivet sleeve 1, the main body 11 protrudes from the first surface 121 along the axial direction, the first sealing layer 2 is fixed on the first surface 121, the screw 3 is inserted into the connecting hole 110 and is connected to the inner wall of the connecting hole 110 by welding, and at least part of the screw 3 protrudes from the second surface 122 along the axial direction.

The blind rivet sleeve 1 is a main component for riveting in the blind rivet bolt, and may be a cylindrical structure. The main body 11 may be a main body structure in the rivet sleeve 1, on which a connection hole 110 is provided, and the screw 3 is connected to the main body 11 through the connection hole 110.

The connection hole 110 may be a hole-like structure provided in the body 11 of the rivet sleeve 1 for connection with the screw 3. Illustratively, the connection hole 110 may be a through hole penetrating the main body 11 in the axial direction of the rivet sleeve 1, so that the screw 3 is conveniently threaded through the connection hole 110; the connecting hole 110 may also be a blind hole disposed in the main body 11 along the axial direction of the rivet sleeve 1, and a person skilled in the art may set the depth of the blind hole according to the actual situation, so that the connection between the screw 3 and the connecting hole 110 is firm.

The flange 12 may be a structure for abutting against a member to be riveted (for example, the first case 101) in the rivet sleeve 1, the flange 12 being wound around the outer peripheral surface of the main body 11, and the flange 12 abutting against the surface of the member to be riveted at the rivet hole in a state where the main body 11 is inserted into the rivet hole in the member to be riveted. The first surface 121 and the second surface 122 are respectively surfaces of the flange 12 that are disposed at opposite intervals along the axial direction of the rivet sleeve 1, and the material forming the flange 12 is between the two surfaces. By arranging the body 11 to protrude from the first surface 121 in the axial direction, the body 11 is located on the side where the first surface 121 of the flange 12 is close to, so that the whole body 11 can be penetrated through the caulking hole when the flange 12 abuts against the surface of the workpiece to be riveted at the caulking hole.

Illustratively, the blind rivet bolts may be used, but are not limited to, for connecting the case 10 structure in the battery 100, but may also be used for connecting other devices in the battery 100. The blind rivet bolt disclosed by the embodiment of the utility model can be used for fixing the components in the battery 100, but is not limited to be used for connecting and fixing other components in products such as a vehicle 1000, an airplane, a ship, electronic equipment, an electric tool and the like.

The first sealing layer 2 may be a structure for sealing a gap between the rivet sleeve 1 and the workpiece to be riveted, which is fixedly provided to the first surface 121 of the flange 12. In the rivet-pulled state, the first sealing layer 2 is sandwiched between the flange 12 and the member to be riveted, sealing the gap between the first surface 121 of the flange 12 and the surface of the member to be riveted.

Illustratively, the first sealing layer 2 may be made of an elastic material, so that the surface of the to-be-riveted member and the first surface 121 can be abutted by using the elastic restoring force of the first sealing layer 2 after being extruded, so as to realize the sealing of the gap between the flange 12 and the to-be-riveted member. The first sealing layer 2 may also be formed by curing an elastic sealant applied to the first surface 121 of the flange 12, and a person skilled in the art may form the first sealing layer 2 on the first surface 121 of the flange 12 according to actual circumstances, so that the first sealing layer 2 can seal a gap between the rivet to be riveted and the flange 12.

The screw 3 may be a member for connection with the body 11, and an operator can deform to effect riveting by pulling the body 11 through the screw 3. By inserting the screw 3 into the connection hole 110 and connecting with the inner wall of the connection hole 110 by welding so that the screw 3 is connected with the main body 11, by configuring at least part of the screw 3 to protrude from the second surface 122 in the axial direction, the operator can draw the entire screw 3 with the part of the screw 3 protruding from the second surface 122, facilitating the operation. The screw 3 can be further connected with a connecting piece such as a nut, and the connecting piece can be locked with other parts so as to realize the connection of the piece to be riveted and the other parts.

The screw 3 is connected to the inner wall of the connection hole 110 in the connection part 111 by welding, so that not only is the connection between the screw 3 and the inner wall of the connection hole 110 firm, but also the axial dimension of the screw 3 for connection with the inner wall of the connection hole 110 can be reduced, thereby helping to reduce the length of the screw 3; and the molten material in the welding process can seal the gap between the screw 3 and the inner wall of the connecting hole 110, thereby being beneficial to improving the sealing effect of the rivet bolt.

Through the structure, the first sealing layer 2 on the flange 12 of the blind rivet bolt can seal the gap between the flange 12 and the workpiece to be riveted, so that the riveting hole of the workpiece to be riveted is sealed, and the blind rivet bolt has a good sealing effect.

In some embodiments, as shown in fig. 4, the body 11 includes a connection part 111 and a weak part 112, the weak part 112 being connected between the flange 12 and the connection part 111, and the connection hole 110 penetrating the weak part 112 and extending into the inside of the connection part 111; the screw 3 is fixed to the connection portion 111.

The connection portion 111 and the weak portion 112 are respectively different portions in the main body 11, wherein the connection portion 111 may be a portion for connection with the screw 3, and the weak portion 112 may be a portion having a lower structural strength than the connection portion 111, and the weak portion 112 may be deformed prior to the connection portion 111 when the rivet sleeve 1 is subjected to an external force.

By connecting the weak portion 112 between the flange 12 and the connecting portion 111, the weak portion 112 can be located in the rivet hole of the member to be riveted when the blind rivet flange 12 is abutted against the member to be riveted, so that the weak portion 112 can be deformed in the rivet hole when the blind rivet bolt is blind rivet.

In some embodiments, the wall thickness of the weaknesses 112 is less than the wall thickness of the connection 111.

By configuring the wall thickness of the weak portion 112 to be smaller than the wall thickness of the connecting portion 111, the structural strength of the weak portion 112 is made lower than that of the connecting portion 111, so that the weak portion 112 may be deformed prior to the connecting portion 111.

Illustratively, the weakpoint 112 may also reduce the structural strength of the weakpoint 112 by providing a groove in the wall. The groove may be formed by removing the material of the weak portion 112 by a machining method such as milling, or may be formed simultaneously with the manufacture of the rivet sleeve 1 by a machining method such as casting, so that the machining and manufacture of the weak portion 112 are convenient. Illustratively, the grooves may extend in the axial direction of the rivet sleeve 1, and the outer circumferential surface of the weak portion 112 may be provided with a plurality of grooves at intervals, which can reduce the structural strength of the weak portion 112.

In some embodiments, the screw 3 is welded to the connection portion 111 and forms a welded portion 4, and the welded portion 4 is exposed to the outer circumferential surface of the connection portion 111; the blind rivet bolt further includes a second sealing layer 5, and the second sealing layer 5 is connected to the connection portion 111 and covers the welded portion 4.

The welding portion 4 may be formed when the screw 3 and the connecting portion 111 are connected by welding, and is exposed on the outer peripheral surface of the connecting portion 111. The screw 3 and the connection portion 111 may be connected by laser welding, or may be connected by brazing using a weld ring, so that the screw 3 and the connection portion 111 have a good connection therebetween. The screw 3 is connected to the connection portion 111 by welding, and after inserting a part of the screw 3 into the connection hole 110 of the connection portion 111, the wall of the connection portion 111 may be welded to the outside of the rivet sleeve 1 so that the wall of the connection portion 111 is melted to be connected to the screw 3, and the welded portion 4 is exposed to the outer peripheral surface of the connection portion 111.

The second sealing layer 5 may be a structure for sealing the welded portion 4 on the blind rivet bolt. By providing the second sealing layer 5 on the outer peripheral surface of the connecting portion 111 and covering the welding portion 4, the second sealing layer 5 can seal a crack or a leak of the welding portion 4, so that the possibility of leakage or air leakage of the welding portion 4 between the screw 3 and the connecting portion 111 is reduced, and the sealing effect of the rivet bolt is improved.

Illustratively, the second sealing layer 5 may be made of an elastic material so that the second sealing layer 5 can be closely attached to the outer peripheral surface of the connection portion 111 with its own elastic restoring force so as to seal the welded portion 4 well. The second sealing layer 5 may also be formed by curing an elastic sealant applied to the outer circumferential surface of the connection portion 111, and a person skilled in the art may form the second sealing layer 5 on the outer circumferential surface of the connection portion 111 according to actual circumstances so that the second sealing layer 5 can seal the welding portion 4.

In some embodiments, a sealing structure 6 is provided in the connection hole 110, the sealing structure 6 being used to seal a gap between the screw 3 and an inner wall of the connection hole 110.

The sealing structure 6 may be a structure for sealing a gap between the screw 3 and the inner wall of the connecting hole 110, which can reduce the possibility of air leakage or liquid leakage of the gap between the screw 3 and the inner wall of the connecting hole 110, and is beneficial to improving the sealing effect of the rivet bolt.

Illustratively, the sealing structure 6 may be formed by curing a sealant poured into a gap between the screw 3 and the inner wall of the connection hole 110, so that the molding of the sealing structure 6 is facilitated.

In some embodiments, the sealing structure 6 is located between the screw 3 and the inner wall of the connection hole 110 at the connection portion 111.

By disposing the seal structure 6 between the screw 3 and the inner wall of the connecting hole 110 at the connecting portion 111, the weak portion 112 is deformed without causing deformation of the seal structure 6, which is advantageous in improving the sealing effect of the seal structure 6.

In some embodiments, the screw 3 is threadably connected to the connection 111.

The screw 3 is screwed to the connection portion 111, and an internal thread may be provided on an inner wall of the connection hole 110 of the connection portion 111, and the screw 3 may be connected to the connection portion 111 by screwing the external thread of the screw 3 and the internal thread of the connection hole 110. The screw 3 is screwed with the connection hole 110 of the connection part 111, which contributes to improving the connection firmness of the screw 3 and the connection part 111.

In some embodiments, the connecting hole 110 is formed through the main body 11 along the axial direction, the flange 12 is located at one end of the rivet sleeve 1 along the axial direction, the screw 3 includes a screw head 7 and a rod portion, the screw head 7 is located at one end of the main body 11 away from the flange 12 along the axial direction and abuts against the main body 11, and the rod portion is connected to the screw head 7 and passes through the connecting hole 110.

Through setting up connecting hole 110 as the through-hole that runs through main part 11, set up screw head 7 in the pole portion one end of screw rod 3 for the other end of the pole portion of screw rod 3 can stretch into connecting hole 110 and stretch out from connecting hole 110 from the rivet sleeve 1 that keeps away from flange 12, screw head 7 can be located the connecting hole 110 outside and support in the tip that main part 11 kept away from flange 12, when making screw rod 3 pulled, screw head 7 can be through supporting with effort transmission to rivet sleeve 1, makes effort can be better between screw rod 3 and rivet sleeve 1.

According to some embodiments of the present utility model, as shown in fig. 3, the present utility model provides a blind rivet bolt, which includes a blind rivet sleeve 1, a screw 3, a first sealing layer 2 and a second sealing layer 5, wherein the blind rivet sleeve 1 includes a main body 11 and a flange 12, the flange 12 is wound around the outer circumferential surface of the main body 11, and the first sealing layer 2 is disposed on a first surface 121 of the flange 12 facing the main body 11. The weak portion 112 of main part 11 is connected between flange 12 and connecting portion 111, connecting hole 110 runs through main part 11 along the axial of rivet sleeve 1, the one end of screw rod 3 passes connecting hole 110 and stretches out from connecting hole 110, the other end is provided with screw head 7 and connecting portion 111 and keeps away from the tip of flange 12 and support, screw head 7 is connected through the welding with the butt portion of connecting portion 111 and is formed with welded part 4, second sealing layer 5 covers in welded part 4, be provided with seal structure 6 between the connecting hole 110 inner wall of screw rod 3 and connecting portion 111 department for this rivet bolt has good sealed effect.

Some embodiments of the present utility model further provide a battery, which includes a first case 101, a second case 102, a battery cell 20, a connecting member 500, and a rivet bolt 400 provided in the above technical solution, wherein the second case 102 and the first case 101 are mutually covered and define an accommodating space, the battery cell is accommodated in the accommodating space, the rivet sleeve 1 is riveted to a wall of the first case 101, a first sealing layer of the rivet bolt 400 is clamped between a flange 12 and the wall of the rivet bolt 400, and the connecting member 500 is connected with a screw rod to fix the second case to the first case.

The first case 101 and the second case 102 may be different parts of a case of a battery, and are mutually covered to form an accommodating space for accommodating the battery unit, as shown in fig. 5, the rivet bolt 400 is riveted on a case wall of the first case 101 and fixedly connects the second case 102 with the first case 101 through the connecting piece 500.

Illustratively, the connector 500 may be a nut that can be screwed to the screw 3 and lockingly fix the second casing 102 to the first casing 101.

Some embodiments of the present utility model further provide an electric device, where the electric device includes a battery provided by the foregoing technical solution, and the battery is used for providing electric energy.

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

Claims (10)

1. A blind rivet bolt, characterized in that the blind rivet bolt comprises:

the rivet sleeve comprises a main body and a flange, wherein the main body is provided with a connecting hole, the flange is wound on the outer peripheral surface of the main body, the flange is provided with a first surface and a second surface which are opposite along the axial direction of the rivet sleeve, and the main body protrudes out of the first surface along the axial direction;

a first sealing layer fixed on the first surface; and

and the screw rod is inserted into the connecting hole and connected to the inner wall of the connecting hole by welding, and at least part of the screw rod protrudes out of the second surface along the axial direction.

2. The blind rivet bolt according to claim 1, wherein the main body includes a connecting portion and a weak portion, the weak portion being connected between the flange and the connecting portion, the connecting hole penetrating the weak portion and extending into the connecting portion, and the screw being fixed to the connecting portion.

3. The blind rivet bolt according to claim 2, wherein the wall thickness of the weakened portion is less than the wall thickness of the connecting portion.

4. The blind rivet bolt according to claim 2, wherein the screw is welded to the connecting portion and forms a welded portion exposed to an outer peripheral surface of the connecting portion; the rivet bolt further comprises a second sealing layer, wherein the second sealing layer is connected to the connecting portion and covers the welding portion.

5. The blind rivet bolt according to claim 2, wherein a sealing structure is provided in the connection hole, the sealing structure being used to seal a gap between the screw and an inner wall of the connection hole.

6. The blind rivet bolt of claim 5 wherein said seal structure is located between said shank and an inner wall of said attachment hole at said attachment portion.

7. The blind rivet bolt according to claim 2, wherein the shank is threadably connected to the connecting portion.

8. The blind rivet bolt according to claim 1, wherein the connecting hole penetrates the main body in the axial direction, and the flange is located at one end of the blind rivet sleeve in the axial direction;

the screw comprises a screw head and a rod part, wherein the screw head is positioned at one end of the main body far away from the flange along the axial direction and is propped against the main body, and the rod part is connected with the screw head and penetrates through the connecting hole.

9. A battery, comprising:

a first case;

the second box body is mutually covered with the first box body and defines an accommodating space;

a battery cell accommodated in the accommodation space; and

the blind rivet bolt according to any one of claims 1 to 8, wherein the blind rivet sleeve is riveted to a wall of the first case, and the first sealing layer of the blind rivet bolt is sandwiched between a flange of the blind rivet bolt and the wall of the case;

and the connecting piece is connected with the screw rod so as to fix the second box body to the first box body.

10. An electrical device comprising a battery as claimed in claim 9, said battery being arranged to provide electrical energy.