Riveted assembly, battery, electric device, method and apparatus for assembling a riveted assembly

Abstract

The application provides a riveting assembly, a battery, an electric device, a riveting assembly assembling method and equipment, and relates to the technical field of batteries. The riveting assembly comprises a first component, a second component and a riveting piece; the first component has a first connecting part; the second component has a first hollow part, and the second component has opposite first and second walls; the riveting body of the riveting piece is configured to pass through the first wall, the first hollow part, the second wall and the first connecting part in sequence; along the axial direction of the riveting body, the riveting body has a first weak part and a first limiting part arranged at intervals, the first weak part protrudes in the radial direction of the riveting body when the riveting body is subjected to axial stress, so as to form a second limiting part, so that the first connecting part and the second wall are connected between the first limiting part and the second limiting part, the second wall and the first connecting part are locked, the risk of relative shaking of the first component and the second component is reduced, and the connection stability between the first component and the second component is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a riveting assembly, a battery, an electrical device, and a method and apparatus for assembling the riveting assembly. Background Technology

[0002] Currently, the most commonly used batteries in vehicles are lithium-ion batteries. As a rechargeable battery, lithium-ion batteries have advantages such as small size, high energy density, high power density, many cycles, and long storage time.

[0003] A battery typically consists of a casing and individual battery cells, with the cells housed within the casing. To improve the stability of the battery cells within the casing, mounting brackets are installed to confine them, thus enhancing their stability. The connection stability between the mounting brackets and the casing is also a crucial factor affecting the stability of the battery cells within the casing. Therefore, improving the connection stability between the casing and the mounting brackets has become a pressing issue in the field of battery technology. Summary of the Invention

[0004] This application provides a riveting assembly, a battery box, a battery, an electrical device, and an assembly method and equipment for riveting assemblies, so as to improve the connection stability of the box and the mounting bracket.

[0005] In a first aspect, embodiments of this application provide a riveting assembly, including a first component, a second component, and a riveting member; the first component has a first connecting portion; the second component has a first hollow portion and opposing first and second walls; the riveting member includes a riveting body, the riveting body being configured to sequentially pass through the first wall, the first hollow portion, the second wall, and the first connecting portion, the first connecting portion being located on the side of the second wall opposite to the first wall; wherein, along the axial direction of the riveting body, the riveting body has a first weak portion and a first limiting portion spaced apart, the first weak portion being configured to protrude radially along the riveting body when the riveting body is subjected to force along the axial direction of the riveting body, to form a second limiting portion located within the first hollow portion, so that the first connecting portion and the second wall are connected between the first limiting portion and the second limiting portion.

[0006] In the above technical solution, the riveting body of the riveting component can sequentially pass through the first wall, the first hollow portion, the second wall, and the first connecting portion, so that the first weak portion is located within the first hollow portion, and the first limiting portion is located on the side of the first connecting portion away from the second wall. By applying axial force to the riveting body, the first weak portion protrudes radially along the riveting body to form the second limiting portion. A limiting space is formed between the first limiting portion and the second limiting portion to lock the second wall and the first connecting portion, thereby achieving the connection between the first component and the second component. Therefore, the riveting component can extend into the first hollow portion and limit and lock the second wall and the first connecting portion within the first hollow portion, reducing the risk of relative wobbling between the first component and the second component due to gaps between the second wall and the first connecting portion, and improving the connection stability between the first component and the second component. Furthermore, the riveting component can extend into relatively concealed spaces to achieve locking, such as extending into the first hollow portion, making the application range of the riveting component wider.

[0007] In some embodiments of the first aspect of this application, the riveting body is further provided with a second weak portion, which is configured to protrude radially from the riveting body when the riveting body is subjected to force along the axial direction of the riveting body, so as to form the first limiting portion.

[0008] In the above technical solution, the first limiting part is formed by the second weak part protruding and deforming radially along the riveting body after the riveting body is subjected to axial force. Before the deformation, the second weak part has a smaller size in the radial direction of the riveting body, which facilitates the riveting body to pass through the first wall, the first central hole, the second wall and the first connecting part, and facilitates the formation of the first limiting part on the side of the first connecting part away from the second wall, thereby limiting the first connecting part.

[0009] In some embodiments of the first aspect of this application, the stiffness of the first weak portion is less than the stiffness of the second weak portion.

[0010] In the above technical solution, the stiffness of the first weak part is less than that of the second weak part. During the process of applying axial force to the riveting body, the first weak part will deform before the second weak part. During the application of force, the distance between the first weak part and the end of the riveting body located in the direction from the first weak part to the second weak part remains unchanged. This makes it easy to deform the first weak part into the second limiting part by pressing the riveting body, thereby facilitating the riveting of the first component and the second component by riveting.

[0011] In some embodiments of this application, the wall thickness of the first weak portion is less than the wall thickness of the second weak portion, so that the stiffness of the first weak portion is less than the stiffness of the second weak portion.

[0012] In the above technical solution, by setting the wall thickness of the first weak part to be less than that of the second weak part, the stiffness of the first weak part is less than that of the second weak part, which facilitates the manufacturing and forming of the riveting body of the riveting part.

[0013] In some embodiments of the first aspect of this application, the riveting body includes a body portion and a riveting portion, the first weak portion and the first limiting portion are both disposed on the body portion, the riveting portion is connected to the body portion and located on the side of the first limiting portion away from the first weak portion; the riveting body has a second hollow portion, and the riveting portion is used to cooperate with a riveting tool that passes through the second hollow portion.

[0014] In the above technical solution, the riveting part is used to cooperate with the riveting tool that passes through the second hollow part, which facilitates the application of axial force to the riveting body. Moreover, since the riveting tool passes through the second hollow part and cooperates with the riveting part, no additional riveting space is required.

[0015] In some embodiments of the first aspect of this application, the riveting portion is provided with internal threads for connection with the riveting tool.

[0016] In the above technical solution, the internal thread of the riveting part and the external thread of the riveting tool are threaded together, making it easier to connect the riveting part and the riveting tool.

[0017] In some embodiments of the first aspect of this application, the riveting assembly further includes a third member located on the side of the first wall opposite to the second wall; the riveting member further includes a flange connected to one end of the riveting body and located on the side of the third member opposite to the first wall.

[0018] In the above technical solution, the third component is located on the side of the first wall away from the second wall, and the third component can limit the second component on the side of the first wall away from the second wall; the flange of the riveting part is located on the side of the third component away from the first wall, and the flange can limit the third component. The flange and the first limiting part cooperate to restrict the second component between the third component and the first connecting part of the first component, which can improve the connection stability of the first component and the second component.

[0019] In some embodiments of the first aspect of this application, the riveting body further includes a third weak portion, which is configured to protrude radially from the riveting body when the riveting body is subjected to force along the axial direction to form a third limiting portion, which is configured to fill the gap between the first wall and the third member.

[0020] In the above technical solution, the third weak part is deformed to form a third limiting part. The third limiting part fills the gap between the first wall and the third component, making it less likely that the third component and the first wall will move in the axial direction of the riveting body, thereby improving the stability of the connection between the first component, the second component and the third component.

[0021] In some embodiments of the first aspect of this application, the riveting body further has a third weak portion, which is configured to protrude radially from the riveting body when the riveting body is subjected to force along the axial direction, to form a third limiting portion, so that the third member and the first wall are connected between the flange portion and the third limiting portion.

[0022] In the above technical solution, the third weak part is deformed to form a third limiting part, and the first wall and the third component are limited between the first limiting part and the flange part, which is conducive to maintaining a fixed relative position relationship between the first wall and the third component, thereby improving the connection stability of the first wall and the third component.

[0023] In some embodiments of the first aspect of this application, the stiffness of the third weak part is greater than that of the second weak part.

[0024] In the above technical solution, the stiffness of the second weak part is less than that of the third weak part. During the process of applying axial force to the riveting body, the second weak part will deform before the third weak part, so that the second limiting part formed by the deformation of the first weak part is limited on the side of the second wall away from the first connecting part. The second limiting part can abut against the side of the second wall away from the first connecting part, which can provide support for riveting the riveting parts and facilitate riveting the riveting parts so that the third weak part is deformed into the third limiting part.

[0025] In some embodiments of the first aspect of this application, the wall thickness of the third weak portion is greater than the wall thickness of the second weak portion, so that the stiffness of the third weak portion is greater than the stiffness of the second weak portion.

[0026] In the above technical solution, by setting the wall thickness of the second weak part to be less than that of the third weak part, the stiffness of the second weak part is less than that of the third weak part, which facilitates the manufacturing and forming of the riveting body of the riveting part.

[0027] In some embodiments of the first aspect of this application, the riveting body has a second hollow portion, the inner surface of the riveting body is provided with a first groove, and the riveting body forms a first weak portion in the region of the first groove.

[0028] In the above technical solution, a first groove is provided on the inner surface of the riveting body, such that the wall thickness of the area of ​​the first groove is less than the wall thickness of other non-weak parts of the riveting body, so that the area of ​​the first groove forms a first weak part, which simplifies the forming method of the first weak part and reduces the manufacturing difficulty of the riveting part.

[0029] In some embodiments of the first aspect of this application, the first groove is a closed structure extending circumferentially along the riveting body.

[0030] In the above technical solution, the first groove is a closed structure extending circumferentially along the riveting body. The first weak part can protrude around the perimeter and form a closed second limiting part extending circumferentially along the riveting body, which can better limit the second wall.

[0031] In some embodiments of the first aspect of this application, the riveting assembly is a battery box, the first component forms a housing space for a battery cell, the second component is housed within the housing space, and the second component is used to divide the housing space into sub-spaces for housing the battery cells.

[0032] In the above technical solution, the first component is the battery box body, and the second component is the battery box mounting bracket. The riveting parts of the battery box can extend into the first hollow part and limit and lock the second wall and the first connecting part in the first hollow part, reducing the risk of relative shaking of the first component and the second component due to the gap between the second wall and the first connecting part. That is, it improves the connection stability between the box body and the mounting bracket, thereby improving the installation stability of the battery cells installed in the subspace.

[0033] Secondly, embodiments of this application provide a battery, including a battery cell and the battery case provided in the above embodiments.

[0034] In the above technical solution, the battery includes the battery box provided in the above embodiment, which enables a stable connection between the battery box body and the mounting bracket, thereby improving the installation stability of the battery cells in the battery box.

[0035] Thirdly, embodiments of this application provide an electrical device, including the battery provided in the third aspect embodiment.

[0036] Fourthly, embodiments of this application provide a method for assembling a riveting assembly, comprising:

[0037] A first component, a second component, and a riveting member are provided. The first component has a first connecting portion; the second component has a first hollow portion and opposing first and second walls, with the first connecting portion located on the side of the second wall away from the first wall; the riveting member includes a riveting body, and along the axial direction of the riveting body, the riveting body has a first weak portion and a first limiting portion spaced apart.

[0038] The riveting body passes sequentially through the first wall, the first hollow portion, the second wall, and the first connecting portion;

[0039] The rivet is pressed into place so that the first weak part protrudes radially along the rivet body to form a second limiting part, so that the first connecting part and the second wall are connected between the first limiting part and the second limiting part.

[0040] In the above technical solution, the riveting body of the riveting component passes sequentially through the first wall, the first hollow portion, the second wall, and the first connecting portion, so that the first weak part is located within the first hollow portion, and the first limiting part is located on the side of the first connecting portion away from the second wall. By pressing the riveting body, the first weak part protrudes radially along the riveting body, forming the second limiting part. A limiting space is formed between the first limiting part and the second limiting part to lock the second wall and the first connecting portion, thereby achieving the connection between the first component and the second component. Therefore, this method allows the riveting component to extend into the first hollow portion and limit and lock the second wall and the first connecting portion within the first hollow portion, reducing the risk of relative wobbling between the first and second components due to gaps between the second wall and the first connecting portion, and improving the connection stability between the first and second components. Furthermore, this riveting component can extend into relatively concealed spaces to achieve locking, such as extending into the first hollow portion, making its application range wider.

[0041] In some embodiments of the fifth aspect of this application, the riveting body is further provided with a second weak portion;

[0042] The assembly method of the riveting assembly further includes:

[0043] The rivet is pulled together so that the second weak part protrudes radially along the rivet body to form the first limiting part.

[0044] In the above technical solution, during the process of the second weak part deforming to form the first limiting part, the end of the riveting body located in the direction from the first weak part to the first limiting part will move towards the direction of the first connecting part. By riveting the riveting parts, the movement of the end of the riveting body can be adapted, thereby ensuring that the second weak part is deformed into a reliable first limiting part.

[0045] In some embodiments of the fifth aspect of this application, the riveting assembly further includes a third component;

[0046] The assembly method of the riveting assembly further includes:

[0047] Provide the third component and position the third component on the side of the first wall opposite to the second wall;

[0048] The riveting component further includes a flange portion, which is connected to one end of the riveting body and located on the side of the third component away from the first wall. The riveting body also includes a third weak portion, which is disposed close to the flange portion relative to the first weak portion.

[0049] The assembly method of the riveting assembly further includes:

[0050] The rivet is pressed into place so that the third weak portion protrudes radially along the rivet body to form a third limiting portion. The third limiting portion is configured to fill the gap between the first wall and the third member, or the third limiting portion is configured to cooperate with the flange to connect the third member and the first wall between the flange and the third limiting portion.

[0051] In the above technical solution, pressing the riveted parts together facilitates the application of axial force by the riveting tool, improving assembly convenience and efficiency. The third limiting part either fills the gap between the first wall and the third component, or the third limiting part and the flange together limit the first wall and the third component, both of which reduce the risk of axial movement of the first wall and the third component in the riveting body, thereby improving the installation stability of the first wall and the third component.

[0052] Fifthly, embodiments of this application provide an assembly apparatus for a riveting assembly, including a providing device and an assembly device; the providing device is configured to provide a first component, a second component, and a riveting member, the first component having a first connecting portion; the second component having a first hollow portion, the second component having opposing first and second walls, the first connecting portion being located on the side of the second wall away from the first wall; the riveting member including a riveting body, the riveting body having a first weak portion and a first limiting portion spaced apart along the axial direction of the riveting body; the assembly device is configured to sequentially pass the riveting body through the first wall, the first hollow portion, the second wall, and the first connecting portion, and to apply force along the axial direction of the riveting body, so that the first weak portion protrudes radially along the riveting body to form a second limiting portion, so that the first connecting portion and the second wall are connected between the first limiting portion and the second limiting portion. Attached Figure Description

[0053] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 Here is a simplified structural diagram of an existing battery box;

[0055] Figure 2 This application provides structural schematic diagrams of vehicles for some embodiments;

[0056] Figure 3 This application provides schematic diagrams of the battery structure for some embodiments.

[0057] Figure 4 This is a schematic diagram of the structure of a riveting assembly provided in some embodiments of this application;

[0058] Figure 5 for Figure 4 Enlarged view of point I in the middle;

[0059] Figure 6 A partial cross-sectional view of a riveting assembly provided in some embodiments of this application (the first weak part, the second weak part, and the third weak part are not deformed along the radial protrusion of the riveting body);

[0060] Figure 7 This is a schematic diagram of the structure of a riveting component provided in some other embodiments of this application;

[0061] Figure 8 A cross-sectional view of a riveting assembly provided in some embodiments of this application (the first weak part is deformed into a second limiting part);

[0062] Figure 9 A cross-sectional view of a riveting assembly provided in some embodiments of this application (the first weak part is deformed into the second limiting part, and the second weak part is deformed into the first limiting part);

[0063] Figure 10 A cross-sectional view of a riveting assembly provided in some embodiments of this application (the third limiting portion fills the gap between the first wall and the third member);

[0064] Figure 11 A cross-sectional view of a riveting assembly provided in some embodiments of this application (no gap between the first wall and the third member, and the third weak part not deformed into the third limiting part);

[0065] Figure 12A cross-sectional view of a riveting assembly provided in some embodiments of this application (the third weak part is deformed into a third limiting part and located on the side of the first wall away from the third member);

[0066] Figure 13 This is a schematic diagram of the structure of the riveting component provided in some embodiments of this application;

[0067] Figure 14 A flowchart illustrating a method for assembling a riveting assembly according to some embodiments of this application;

[0068] Figure 15 This is a schematic diagram of the assembly equipment for riveting components provided in some embodiments of this application.

[0069] Icons: 1000 - Vehicle; 100 - Battery; 10 - Riveting assembly; 11 - First component; 111 - Accommodation space; 1111 - Subspace; 1112 - Opening; 112 - First connecting part; 113 - First contour part; 114 - First base plate part; 115 - First reinforcing rib; 116 - First support part; 1161 - First abutting part; 12 - Second component; 121 - First hollow part; 122 - First wall; 123 - Second wall; 124 - First insertion hole; 13 - Riveting piece; 131 - Riveting body; 1311 - First weak part; 1312 - First limiting part; 1312a - First limiting surface; 1312b - First guiding surface; 1313 - Second limiting part; 1314- Second weak part; 1315- Second hollow part; 1316- Body part; 13161- First groove; 13162- Second groove; 13163- Third groove; 1317- Riveting part; 1318- Third weak part; 1319- Third limiting part; 132- Flange part; 14- Third component; 141- Second insertion hole; 15- Nut; 151- Threaded hole; 152- First protrusion; 153- Second protrusion; 16- Gap; 20- Battery cell; 30- Case cover; 200- Controller; 300- Motor; 2000- Assembly equipment for riveting components; 2100- Providing device; 2200- Assembly device. Detailed Implementation

[0070] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0071] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0072] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0073] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0074] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on this application. Furthermore, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0075] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0076] like Figure 1 As shown, the existing battery box includes a first component 11, a second component 12, and a third component 14. The first component 11 has a first connecting portion 112 and forms a receiving space 111 for accommodating a battery cell 20. The second component 12 is installed within the receiving space 111 and connected to the first component 11, and the second component 12 is used to divide the receiving space 111 into sub-spaces 1111 for accommodating the battery cells 20. The first component 11 has the first connecting portion 112, and the second component 12 has a first hollow portion 121 and forms a first wall 122 and a second wall 123 arranged opposite to each other. The first connecting portion 112 of the first component 11 is located on the side of the second wall 123 opposite to the first wall 122. The third component 14 is connected to the first component 11, and a portion of the third component 14 extends to the side of the first wall 122 opposite to the second wall 123.

[0077] The battery 100 also includes a riveting component for connecting the first component 11, the second component 12, and the third component 14 into a whole. The riveting component includes a riveting piece 13 and a nut 15.

[0078] The nut 15 has a threaded hole 151, a first protrusion 152, and a deformable portion. The first protrusion 152 is provided at its open end, and the diameter of the first protrusion 152 is larger than the outer diameter of the nut 15. The end of the nut 15 away from the first protrusion 152 passes through the first connecting portion 112 of the first member 11. The first protrusion 152 is located on the side of the first connecting portion 112 facing the second wall 123. The deformable portion of the nut 15 is then riveted or pressed to protrude radially along the nut 15 to form a second protrusion 153. The second protrusion 153 is located on the side of the first connecting portion 112 away from the second wall 123. The first protrusion 152 and the second protrusion 153 respectively abut against the two sides of the first connecting portion 112 to fix the nut 15 to the first connecting portion 112.

[0079] The riveting component 13 includes a riveting body 131 and a flange portion 132, with the flange portion 132 disposed at one axial end of the riveting body 131. After the nut 15 is fixed to the first connecting portion 112, the riveting body 131 passes sequentially through the third component 14, the first wall 122, the first hollow portion 121, the second wall 123, and the first connecting portion 112, with the flange portion 132 positioned on the side of the third component 14 facing away from the first wall 122. The end of the riveting body 131 facing away from the flange portion 132 is screwed into the threaded hole 151 of the nut 15. Thus, the nut 15, the riveting body 131, and the flange portion 132 together limit the second component 12 between the third component 14 and the first connecting portion 112.

[0080] The inventors discovered that because the second component 12 has a first hollow portion 121, the nut 15 cannot form a limiting portion on the side of the second wall 123 away from the first connecting portion 112, nor can it form a limiting portion on the side of the first wall 122 away from the connector. This creates a risk of movement between the second component 12 and the third component 14 and the first connecting portion 112. Furthermore, with prolonged use, the screw connection between the riveting body 131 and the nut 15 will fail, leading to the failure of the connection between the first component 11, the second component 12, and the third component 14.

[0081] Based on the above considerations, in order to alleviate the problem of the second component 12 shifting relative to the first component 11, thereby improving the connection stability of the first component 11 and the second component 12, the inventors, through in-depth research, have developed a riveting assembly 10. The riveting assembly 10 includes a first component 11 and a second component 12. The first component 11 has a first connecting portion 112; the second component 12 has a first hollow portion 121 and opposing first walls 122 and second walls 123; a first limiting portion 1312 and a first weak portion 1311 are provided at intervals on the riveting body 131 of the riveting member 13.

[0082] The riveting body 131 of the riveting member 13 passes sequentially through the first wall 122, the first hollow portion 121, the second wall 123, and the first connecting portion 112, so that the first weak portion 1311 is located inside the first hollow portion 121, and the first limiting portion 1312 is located on the side of the first connecting portion 112 away from the second wall 123. By applying axial force to the riveting body 131, the first weak portion 1311 protrudes radially along the riveting body 131 to form the second limiting portion 1313. A limiting space is formed between the first limiting portion 1312 and the second limiting portion 1313 to lock the second wall 123 and the first connecting portion 112, thereby realizing the connection between the first component 11 and the second component 12.

[0083] Therefore, the riveting member 13 can extend into the first hollow portion 121 and limit and lock the second wall 123 and the first connecting portion 112 within the first hollow portion 121, reducing the risk of relative wobbling between the first component 11 and the second component 12 due to gaps between the second wall 123 and the first connecting portion 112, and improving the connection stability between the first component 11 and the second component 12. Furthermore, the riveting member 13 can extend into relatively concealed spaces to achieve locking, such as into the first hollow portion 121, making its application range wider.

[0084] The riveting assembly 10 disclosed in this application can be used, but is not limited to, batteries, and can also be used in electrical devices such as vehicles, ships, or aircraft. The power system of such electrical devices can be composed using batteries disclosed in this application. This facilitates a stable connection between the battery box and the mounting bracket, thereby improving the installation stability of individual battery cells within the box.

[0085] The riveting assembly 10 described in this application is applicable to the battery 100 and electrical devices using the battery 100. The following description uses the riveting assembly 10 in a battery case of the battery 100 as an example to illustrate the relevant structure of the riveting assembly 10.

[0086] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical equipment.

[0087] For ease of explanation, the following embodiments will use a vehicle 1000 as an example of electrical equipment.

[0088] Please refer to Figure 2 The vehicle 1000 has a battery 100 installed inside it. The battery 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000, for example, the battery 100 can be used as the operating power source for the vehicle 1000.

[0089] The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300, for example, for the power needs of the vehicle 1000 during startup, navigation and driving.

[0090] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0091] Please refer to Figure 2 , Figure 3 , Figure 4 The battery 100 includes a riveting assembly 10 and a battery cell 20. The riveting assembly 10 includes a first component 11, a second component 12, and a riveting member 13. The first component 11 forms a receiving space 111 for accommodating the battery cell 20. The second component 12 is accommodated within the receiving space 111 and is used to divide the receiving space 111 into multiple subspaces 1111 for accommodating the battery cells 20. The riveting member 13 is used to rivet the first component 11 and the second component 12 to form an integral structure.

[0092] The accommodating space 111 has an opening 1112, and the battery box also includes a cover 30 for covering the opening 1112 of the first component 11. The cover 30 and the first component 11 together define a sealed space to accommodate the battery cell 20 within the sealed space. Of course, in order to improve the sealing performance of the battery box, the connection between the first component 11 and the cover 30 can be sealed by a sealing element (not shown in the figure), such as a sealing ring or sealant.

[0093] The first component 11 and the lid 30 can be of various shapes, such as cuboids or cylinders. The lid 30 can be a hollow structure with an opening on one side to form a cavity for accommodating the battery cell 20. The opening side of the lid 30 covers the opening side of the first component 11, and the cavity and the accommodating space 111 together define a sealed space. Of course, the lid 30 can also be a plate-like structure. When the lid 30 closes to the opening side of the first component 11, it forms a box with a sealed space.

[0094] In battery 100, there can be one or more battery cells 20. If there are multiple battery cells 20, they can be connected in series, in parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 20 are connected in both series and parallel. Multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed configuration, and then the whole formed by the multiple battery cells 20 is housed in the first component 11. Alternatively, multiple battery cells 20 can first be connected in series, in parallel, or in a mixed configuration to form a battery module, and then multiple battery modules can be connected in series, in parallel, or in a mixed configuration to form a whole, which is then housed in the first component 11. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes. Figure 3 An example is shown where the battery cell 20 is cylindrical.

[0095] In some embodiments, the battery 100 may also include a busbar (not shown), through which multiple battery cells 20 can be electrically connected to each other to achieve series, parallel, or mixed connection of multiple battery cells 20.

[0096] The structure of the battery cell 20 can refer to related technologies. For example, the battery cell 20 may include a housing, an electrode assembly, and an end cap assembly. The housing has an opening, the electrode assembly is housed inside the housing, and the end cap assembly is used to seal the opening.

[0097] The outer shell can be of various shapes, such as cylinder or cuboid. The shape of the outer shell can be determined according to the specific shape of the electrode assembly. For example, if the electrode assembly is cylindrical, the outer shell can be cylindrical; if the electrode assembly is cuboid, the outer shell can be cuboid.

[0098] The outer shell can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc. This application embodiment does not impose any special restrictions on this.

[0099] The electrode assembly may include a positive electrode (not shown), a negative electrode (not shown), and a separator (not shown). The electrode assembly can be a wound structure formed by winding the positive electrode, separator, and negative electrode, or a stacked structure formed by arranging the positive electrode, separator, and negative electrode in layers. The electrode assembly also includes a positive electrode tab (not shown) and a negative electrode tab (not shown). The positive electrode tab can be a positive current collector without a positive active material layer coated on the positive electrode, and the negative electrode tab can be a negative current collector without a negative active material layer coated on the negative electrode.

[0100] The end cap assembly is used to seal the opening of the housing to form a sealed mounting space (not shown) for accommodating the electrode assembly. The mounting space also accommodates the electrolyte, such as an electrolyte solution. As a component that outputs electrical energy from the electrode assembly, the end cap assembly contains electrode terminals for electrical connection to the electrode assembly, specifically, electrical connection between the electrode terminals and the tabs of the electrode assembly. For example, the electrode terminals and tabs are connected via a current collector to achieve this electrical connection.

[0101] like Figure 4 , Figure 5 , Figure 6 As shown, in some embodiments, the riveting assembly 10 includes a first component 11, a second component 12, and a riveting member 13; the first component 11 has a first connecting portion 112; the second component 12 has a first hollow portion 121, and the second component 12 has opposing first walls 122 and second walls 123; the riveting member 13 includes a riveting body 131, which is configured to pass sequentially through the first wall 122, the first hollow portion 121, the second wall 123, and the first connecting portion 112, with the first connecting portion 112 located on the second wall 123. On the side away from the first wall 122; wherein, along the axial direction of the riveting body 131, the riveting body 131 has a first weak portion 1311 and a first limiting portion 1312 spaced apart, the first weak portion 1311 is configured to protrude radially along the riveting body 131 when the riveting body 131 is subjected to force along the axial direction of the riveting body 131, so as to form a second limiting portion 1313 located in the first hollow portion 121, so that the first connecting portion 112 and the second wall 123 are connected between the first limiting portion 1312 and the second limiting portion 1313.

[0102] The first component 11 also has a first outline portion 113 and a first base plate portion 114. The first outline portion 113 surrounds the first base plate portion 114, and the first outline portion 113 and the first base plate portion 114 together define the receiving space 111 of the first component 11. The first component 11 is the box body. The second component 12 is the mounting bracket.

[0103] The first contour portion 113 is a hollow structure, which can reduce the weight of the first component 11. The interior of the first contour portion 113 is provided with a plurality of spaced-apart first reinforcing ribs 115, which can enhance the strength and rigidity of the first contour portion 113, and improve its resistance to damage and deformation. Of course, the first contour portion 113 can also be a solid structure.

[0104] The first component 11 also includes a first support portion 116, which is connected to the inner side of the first contour portion 113 and located within the receiving space 111. The first support portion 116 may be a hollow structure to reduce the weight of the first component 11. Of course, the first support portion 116 may also be a solid structure. Figure 6 The diagram shows a case where the first support portion 116 has a hollow structure. The wall of the first support portion 116 facing the opening 1112 of the receiving space 111 is the first connecting portion 112. One end of the second member 12 is located on the side of the first connecting portion 112 facing the opening 1112 of the receiving space 111 and is supported by the first connecting portion 112. The first support portion 116 also has a first abutment portion 1161 disposed opposite to the first connecting portion 112.

[0105] The second component 12 has a first hollow portion 121, with a first wall 122 and a second wall 123 located on opposite sides of the first hollow portion 121. The first wall 122 is further away from the first connecting portion 112 than the second wall 123. The second wall 123 is stacked and abuts against the first connecting portion 112. Under the action of the riveting member 13, the second wall 123 and the first connecting portion 112 are limited and locked in the stacking direction. The locking of the second wall 123 and the first connecting portion 112 means that the riveting member 13 keeps the first connecting portion 112 and the second wall 123 in a state of mutual abutment in the stacking direction.

[0106] The first wall 122, the second wall 123, and the first limiting portion 1312 are provided with coaxially arranged first insertion holes 124. The riveting body 131 is configured to pass through the first wall 122, the first hollow portion 121, the second wall 123, and the first connecting portion 112 in sequence. This means that the riveting body 131 is inserted from the side of the first wall 122 away from the second wall 123, and passes through the first insertion hole 124 of the first wall 122, the first hollow portion 121, the first insertion hole 124 of the second wall 123, and the first insertion hole 124 of the first connecting portion 112 in sequence. After the riveting body 131 passes through the first connecting portion 112, one end of the riveting body 131 is displaced into the first support portion 116 and abuts against the side of the first abutment portion 1161 facing the first connecting portion 112.

[0107] The first limiting part 1312 is located on the side of the first connecting part 112 away from the second wall 123. In other words, the first limiting part 1312 is located inside the first support part 116. The first limiting part 1312 limits the first connecting part 112 on the side away from the second wall 123 to restrict and limit the riveting body 131 from disengaging in the direction from the second wall 123 toward the first wall 122.

[0108] The first weak portion 1311 is located on the side of the second wall 123 opposite to the first connecting portion 112; in other words, the first weak portion 1311 is located inside the first hollow portion 121. After applying force to the riveting body 131 along its axial direction, the first weak portion 1311 protrudes radially along the riveting body 131 to form a second limiting portion 1313. The second limiting portion 1313 limits the second wall 123 on the side opposite to the first connecting portion 112, thereby restricting the riveting body 131 from moving in the direction from the first wall 122 toward the second wall 123. The first limiting portion 1312 and the second limiting portion 1313 together keep the first connecting portion 112 and the second wall 123 in a mutually abutting state, thereby achieving the connection of the first component 11 and the second component 12 into one unit by the riveting member 13.

[0109] The axial force applied to the riveting body 131 to deform the first weak part 1311 into the second limiting part 1313 can be achieved by pull riveting or press riveting. The stiffness of the first weak part 1311 is less than the stiffness of other non-weak parts of the riveting body 131, so that when the riveting body 131 is subjected to axial force, the first weak part 1311 is more likely to deform.

[0110] Therefore, the riveting member 13 of the riveting assembly 10 can extend into the first hollow portion 121 and limit and lock the second wall 123 and the first connecting portion 112 within the first hollow portion 121, reducing the risk of relative wobbling between the first component 11 and the second component 12 due to gaps between the second wall 123 and the first connecting portion 112, and improving the connection stability between the first component 11 and the second component 12. In other words, it improves the installation stability of the battery box housing and the mounting bracket. The radial dimension of the riveting body 131 at the deformation front of the first weak portion 1311 is smaller than the deformed dimension, so that the riveting body 131 can extend into a more concealed space to achieve locking, such as extending into the first hollow portion 121, making the application range of the riveting member 13 wider.

[0111] There are various molding methods for the first limiting part 1312, such as... Figure 7As shown, a first limiting portion 1312 is disposed on the outer peripheral surface of the riveting body 131 and protrudes radially from the outer peripheral surface of the riveting body 131. The first limiting portion 1312 is an elastic element. The first limiting portion 1312 has a first limiting surface 1312a and a first guiding surface 1312b. The first limiting surface 1312a is located on the side of the first limiting portion 1312 facing the first weak portion 1311, and the first guiding surface 1312b is located on the side of the first limiting portion 1312 away from the first weak portion 1311. Before deformation, the first limiting surface 1312a is a plane parallel to the radial direction of the riveting body 131, and the first guiding surface 1312b is an inclined surface that gradually approaches the first limiting surface 1312a in a direction from the central axis of the riveting body 131 towards the outer peripheral surface of the riveting body 131. During the insertion of the riveting body 131 into each of the first insertion holes 124, the hole wall of the first insertion hole 124 presses against the first guide surface 1312b, causing the first limiting part 1312 to deform relative to the riveting body 131. The outer diameter of the deformed first limiting part 1312 is the same as the hole diameter of the first insertion hole 124, so that the first limiting part 1312 can pass smoothly through each first insertion hole 124. When the first limiting part 1312 disengages from the hole wall of the first insertion hole 124, the first limiting part 1312 returns to its original shape, so that the first limiting surface 1312a is parallel to the radial direction of the riveting body 131.

[0112] For example, such as Figure 6 , Figure 8 , Figure 9 As shown, the riveting body 131 is also provided with a second weak portion 1314, which is configured to protrude radially along the riveting body 131 when the riveting body 131 is subjected to force along the axial direction of the riveting body 131, so as to form a first limiting portion 1312.

[0113] An axial force is applied to the riveting body 131 to cause the second weak portion 1314 to protrude radially along the riveting body 131, forming the first limiting portion 1312. This axial force can be applied to the riveting body 131 by pull riveting or press riveting. The stiffness of the second weak portion 1314 is less than the stiffness of other non-weak portions of the riveting body 131, so that when the riveting body 131 is subjected to an axial force, the second weak portion 1314 is more prone to deformation.

[0114] Before deformation, the outer diameter of the second weak portion 1314 is small, ensuring that the riveting body 131 is inserted into each of the first insertion holes 124 in the direction from the first wall 122 toward the second wall 123, and is located on the side of the first connecting portion 112 away from the second wall 123. That is, it ensures that the riveting body 131 passes through the first wall 122, the first central hole, the second wall 123, and the first connecting portion 112 in sequence. After the second weak portion 1314 is deformed to form the first limiting portion 1312, the outer diameter of the first limiting portion 1312 increases and is larger than the diameter of the first insertion hole 124 of the first connecting portion 112, so that the first limiting portion 1312 can play a limiting role on the side of the first connecting portion 112 away from the second wall 123.

[0115] Since one end of the riveting body 131 abuts against the first abutment 1161, it is convenient to serve as a support point for press riveting. If the deformation of the second weak part 1314 is achieved by press riveting, then as the second weak part 1314 deforms, the position of the first weak part 1311 will gradually move towards the second wall 123, so that the first weak part 1311 is no longer located on the side of the second wall 123 away from the first connecting part 112. After deformation, it can no longer play a limiting role on the side of the second wall 123 away from the first connecting part 112.

[0116] Therefore, in some embodiments, the stiffness of the first weak part 1311 is less than the stiffness of the second weak part 1314.

[0117] When the riveting body 131 abuts against the first abutment 1161 as a fulcrum, the first weak part 1311 is deformed into the second limiting part 1313 by pressing and riveting, and then the second weak part is deformed into the first limiting part 1312 by pulling riveting. Of course, in other embodiments, the deformation of the first weak part 1311 and the second weak part 1314 can also be achieved by pulling riveting.

[0118] Since the stiffness of the first weak part 1311 is less than that of the second weak part 1314, during the axial force application to the riveting body 131, the first weak part 1311 will deform before the second weak part 1314. During the force application, the distance between the first weak part 1311 and the end of the riveting body 131 located in the direction from the first weak part 1311 to the second weak part 1314 remains unchanged. This makes it easy to deform the first weak part 1311 into the second limiting part 1313 by pressing the riveting body 131, thereby facilitating the riveting of the first component 11 and the second component 12 by the riveting member 13.

[0119] The stiffness of the first weak portion 1311 can be made less than that of the second weak portion 1314 in various ways. In some embodiments, the wall thickness of the first weak portion 1311 is less than that of the second weak portion 1314, so that the stiffness of the first weak portion 1311 is less than that of the second weak portion 1314.

[0120] In this embodiment, the riveting body 131 has a second hollow portion 1315. Along the axial direction of the riveting body 131, the second hollow portion 1315 passes through both ends of the axial direction of the riveting body 131, so that the riveting tool can be inserted through the second hollow portion 1315 to apply axial force to the riveting body 131.

[0121] The first weak portion 1311 and the second weak portion 1314 are both parts that constitute the wall of the riveting body 131. The wall thickness of the first weak portion 1311 and the wall thickness of the second weak portion 1314 refer to the radial dimensions of the first weak portion 1311 and the second weak portion 1314 along the riveting body 131 before deformation. The wall thickness of the first weak portion 1311 and the wall thickness of the second weak portion 1314 are both less than the wall thickness of other non-weak portions of the riveting body 131.

[0122] In other embodiments, the stiffness of the materials used for the first weak portion 1311 and the second weak portion 1314 can be changed to be less than the stiffness of the materials used for other non-weak portions of the riveting body 131. Furthermore, the stiffness of the material of the first weak portion 1311 is less than the stiffness of the material of the second weak portion 1314.

[0123] By setting the wall thickness of the first weak part 1311 to be less than the wall thickness of the second weak part 1314, the stiffness of the first weak part 1311 is less than the stiffness of the second weak part 1314, which facilitates the manufacturing and forming of the riveting body 131 of the riveting part 13.

[0124] For easier riveting of the riveting body 131, please refer to... Figure 8 , Figure 9 In some embodiments, the riveting body 131 includes a body portion 1316 and a riveting portion 1317. The first weak portion 1311 and the first limiting portion 1312 are both disposed on the body portion 1316. The riveting portion 1317 is connected to the body portion 1316 and is located on the side of the first limiting portion 1312 away from the first weak portion 1311. The riveting body 131 has a second hollow portion 1315. The riveting portion 1317 is used to cooperate with a riveting tool that passes through the second hollow portion 1315.

[0125] The riveting portion 1317 is located on the side of the first limiting portion 1312 away from the first weak portion 1311. One end of the riveting portion 1317 abuts against the first abutting portion 1161, facilitating the deformation of the second weak portion 1314 of the riveting body 131 by riveting. The second hollow portion 1315 penetrates the body portion 1316 and the riveting portion 1317. The riveting portion 1317 is used to cooperate with the riveting tool that passes through the second hollow portion 1315, facilitating the application of axial force to the riveting body 131. Furthermore, since the riveting tool penetrates the second hollow portion 1315 and cooperates with the riveting portion 1317, no additional riveting space is required.

[0126] There are many ways in which the riveting part 1317 can be engaged with the riveting tool. In some embodiments, the riveting part 1317 is provided with an internal thread (not shown in the figure) for connecting with the riveting tool (not shown in the figure).

[0127] An internal thread is provided inside the second hollow portion 1315 and located on the inner surface of the riveting portion 1317. The portion of the riveting tool that penetrates the second hollow portion 1315 is provided with an external thread, which engages with the internal thread of the riveting portion 1317 to connect the riveting portion 1317 and the riveting tool.

[0128] In other embodiments, the riveting part 1317 and the riveting tool can also be fitted in other ways. For example, the inner surface of the riveting part 1317 is provided with a first snap-fit ​​part (not shown in the figure), and the riveting tool is provided with a second snap-fit ​​part (not shown in the figure) for snapping into the first snap-fit ​​part. The first snap-fit ​​part can be a recess, and the second snap-fit ​​part is a protrusion that can be snapped into the recess.

[0129] The internal thread of the riveting part 1317 and the external thread of the riveting tool are threaded together, making it easier to connect the riveting part 1317 and the riveting tool.

[0130] Please continue to refer to Figure 8 , Figure 9 In some embodiments, the riveting assembly 10 further includes a third member 14 located on the side of the first wall 122 away from the second wall 123; the riveting member 13 further includes a flange 132 connected to one end of the riveting body 131 and located on the side of the third member 14 away from the first wall 122.

[0131] One end of the third component 14 is fixed to the first component 11, and the third component 14 extends to the side of the first wall 122 opposite to the second wall 123. The portion of the third component 14 extending to the first wall 122 opposite to the second wall 123 has a second insertion hole 141, which is coaxial with the first insertion hole 124 on the first wall 122. The riveting body 131 passes sequentially through the second insertion hole 141 of the third component 14, the first insertion hole 124 of the first wall 122, the first insertion hole 124 of the second wall 123, and the insertion hole of the first connecting portion 112. The flange portion 132 is connected to the end of the body portion 1316 opposite to the riveting portion 1317 and is located on the side of the third component 14 opposite to the first wall 122. The outer diameter of the flange portion 132 is larger than the diameter of the second insertion hole 141, so that the flange portion 132 cannot pass through the second insertion hole 141.

[0132] The third component 14 is located on the side of the first wall 122 away from the second wall 123. The third component 14 can limit the second component 12 on the side of the first wall 122 away from the second wall 123. The flange portion 132 of the riveting member 13 is located on the side of the third component 14 away from the first wall 122, and the outer diameter of the flange portion 132 is larger than the outer diameter of the second insertion hole 141. The flange portion 132 can limit the third component 14. The flange portion 132 and the first limiting portion 1312 cooperate to restrict the second component 12 between the third component 14 and the first connecting portion 112 of the first component 11, which can improve the connection stability of the first component 11 and the second component 12.

[0133] In some cases, there is a gap 16 between the first wall 122 and the third member 14 in the axial direction of the riveted body 131, which may cause a risk of wobbling between the second member 12 and the third member 14.

[0134] Based on this, please continue to see Figure 9 , Figure 10 In some embodiments, the riveting body 131 further includes a third weak portion 1318, which is configured to protrude radially along the riveting body 131 when the riveting body 131 is subjected to axial force, to form a third limiting portion 1319, which is configured to fill the gap 16 between the first wall 122 and the third member 14.

[0135] The third limiting portion 1319 can completely fill the gap 16 between the first wall 122 and the third component 14, meaning that the axial dimension of the third limiting portion 1319 in the riveting body 131 is the same as the axial dimension of the gap 16 between the first wall 122 and the third component 14 in the riveting body 131. Alternatively, the third limiting portion 1319 can partially fill the gap 16 between the first wall 122 and the third component 14, meaning that the axial dimension of the third limiting portion 1319 in the riveting body 131 is smaller than the axial dimension of the gap 16 between the first wall 122 and the third component 14 in the riveting body 131.

[0136] After the third weak part 1318 is deformed, it forms the third limiting part 1319. The third limiting part 1319 fills the gap 16 between the first wall 122 and the third component 14, making it less likely that the third component 14 and the first wall 122 will move in the axial direction of the riveting body 131, thereby improving the stability of the connection between the first component 11, the second component 12 and the third component 14.

[0137] In other embodiments, such as Figure 11 , Figure 12 As shown, the riveting body 131 also has a third weak portion 1318, which is configured to protrude radially along the riveting body 131 when the riveting body 131 is subjected to axial force, so as to form a third limiting portion 1319, so that the third member 14 and the first wall 122 are connected between the flange portion 132 and the third limiting portion 1319.

[0138] The outer diameter of the third limiting part 1319 is larger than the diameter of the first insertion hole 124 on the first wall 122. The third limiting part 1319 can limit the first connecting part 112 on the side away from the first wall 122, and cooperate with the flange part 132 to form a limiting space for the first wall 122 and the third component 14. Regardless of whether there is a gap 16 between the first wall 122 and the third component 14 in the axial direction of the riveting body 131, the third limiting part 1319 and the flange part 132 cooperate to limit the first wall 122 and the third component 14, which can reduce or avoid the risk of the second component 12 moving relative to the third component 14, thereby improving the connection stability of the first wall 122 and the third component 14. Moreover, the flange part 132, the third limiting part, the first limiting part 1312 and the second limiting part 1313 work together to improve the connection stability of the first component 11, the second component 12 and the third component 14.

[0139] In some embodiments, the stiffness of the third weak portion 1318 is greater than the stiffness of the second weak portion 1314.

[0140] The stiffness of the third weak part 1318 and the second weak part 1314 refer to their respective abilities to resist deformation. Greater stiffness indicates stronger resistance to deformation, and vice versa. The stiffness of the third weak part 1318 is greater than that of the second weak part 1314, and therefore, the deformation resistance of the third weak part 1318 is stronger than that of the second weak part 1314. The relationship between the stiffness of the first weak part 1311, the second weak part 1314, and the third weak part 1318 is as follows: the stiffness of the first weak part 1311 is less than that of the second weak part 1314, and the stiffness of the second weak part 1314 is less than that of the third weak part 1318.

[0141] During the process of applying axial force to the riveting body 131 and the second weak part 1314 being deformed into the first limiting part 1312, the third weak part 1318 may or may not deform. In the embodiment where the third limiting part 1319, after being deformed by the third weak part 1318, fills the gap 16 between the first wall 122 and the third component 14, during the process of deforming the first weak part 1311 by riveting, one end of the riveting body 131 with the flange 132 moves from the first wall 122 toward the second wall 123, and the third weak part 1318 also moves from the first wall 122 toward the second wall 123. If the third weak part 1318 does not deform, the third limiting part can pass smoothly through the second insertion hole 141 and be located between the third component 14 and the first wall 122. If the third weak part 1318 deforms during the deformation of the first weak part 1311, the deformed third limiting part 1319 cannot be located between the third component 14 and the first wall 122 to fill the gap 16 between the third component 14 and the first wall 122.

[0142] In the embodiment where the first wall 122 and the third component 14 are limited between the third limiting part 1319 and the flange part 132 after the third weak part 1318 is deformed, during the process of deforming the first weak part 1311 by riveting, the end of the riveting body 131 with the flange part 132 moves from the first wall 122 toward the second wall 123. Although the third weak part 1318 also moves from the first wall 122 toward the second wall 123, as long as the deformed third limiting part 1319 is still located on the side of the third component 14 away from the first wall 122, regardless of whether the third weak part 1318 is deformed during the deformation of the first weak part 1311, the third limiting part 1319 and the flange part 132 after the deformation of the third weak part 1318 can jointly limit the first wall 122 and the third component 14.

[0143] The stiffness of the second weak part 1314 is less than that of the third weak part 1318. During the process of applying axial force to the riveting body 131, the second weak part 1314 will deform before the third weak part 1318, so that the second limiting part 1313 formed by the deformation of the first weak part 1311 is limited on the side of the second wall 123 away from the first connecting part 112. The second limiting part 1313 can abut against the side of the second wall 123 away from the first connecting part 112, and can provide support for riveting the riveting member 13, so that the riveting member 13 can be riveted to deform the third weak part 1318 into the third limiting part 1319.

[0144] The stiffness of the second weak portion 1314 can be made less than that of the third weak portion 1318 in various ways. In some embodiments, the wall thickness of the third weak portion 1318 is greater than that of the second weak portion 1314, so that the stiffness of the third weak portion 1318 is greater than that of the second weak portion 1314.

[0145] The third weak point 1318 is a portion of the wall that makes up the riveting body 131. The wall thickness of the third weak point 1318 refers to the radial dimension of the third weak point 1318 along the riveting body 131 before deformation. The wall thickness of the third weak point 1318 is less than the wall thickness of the other non-weak points of the riveting body 131. The wall thickness of the third weak point 1318 is greater than the wall thickness of the first weak point 1311 and the second weak point 1314.

[0146] In other embodiments, the material of the third weak portion 1318 can be changed so that the stiffness of the material used for the third weak portion 1318 is less than the stiffness of the materials used for other non-weak portions of the riveting body 131. Furthermore, the stiffness of the material used for the third weak portion 1318 is greater than the stiffness of the material used for the second weak portion 1314.

[0147] By setting the wall thickness of the second weak part 1314 to be less than the wall thickness of the third weak part 1318, the stiffness of the second weak part 1314 is less than the stiffness of the third weak part 1318, which facilitates the manufacturing and forming of the riveting body 131 of the riveting part 13.

[0148] Please continue reading Figure 13 In some embodiments, the riveting body 131 has a second hollow portion 1315, and the inner surface of the riveting body 131 is provided with a first groove 13161. The riveting body 131 forms a first weak portion 1311 in the area of ​​the first groove 13161.

[0149] The first groove 13161 is provided on the inner surface of the body portion 1316 of the riveting body 131. The first groove 13161 is provided such that the wall thickness at the position corresponding to the first groove 13161 is small, and the first weak portion 1311 is formed in the area of ​​the first groove 13161, thereby making the wall thickness of the first weak portion 1311 smaller than the wall thickness of other non-weak portions of the riveting body 131. Of course, the first groove 13161 can also be provided on the outer surface of the body portion 1316, or the first groove 13161 can be provided on both the inner and outer surfaces of the body portion 1316, with the first grooves 13161 on the inner and outer surfaces of the riveting body 131 facing each other.

[0150] A first groove 13161 is provided on the inner surface of the riveting body 131, such that the wall thickness of the area of ​​the first groove 13161 is less than the wall thickness of other non-weak parts of the riveting body 131, so that the area of ​​the first groove 13161 corresponds to the formation of the first weak part 1311, making the forming method of the first weak part 1311 simple, thereby reducing the manufacturing difficulty of the riveting part 13.

[0151] Please continue to refer to Figure 13 In some embodiments, the first groove 13161 is a closed structure extending circumferentially along the riveting body 131.

[0152] The closed structure refers to the circumferential connection of the press-fitted body 131, where the first groove 13161 is connected at the end.

[0153] The first groove 13161 is a closed structure extending circumferentially along the riveting body 131. The first weak part 1311 can protrude around the periphery and form a closed second limiting part 1313 extending circumferentially along the riveting body 131, which can better limit the second wall 123.

[0154] Please continue reading Figure 13 The inner surface of the riveting body 131 is further provided with a second groove 13162 and a third groove 13163. The second weak portion 1314 is formed in the area of ​​the second groove 13162. Alternatively, the second groove 13162 can be provided on the outer surface of the riveting body 131, or it can be provided on both the inner and outer surfaces of the riveting body 131, with the second grooves 13162 on both surfaces facing each other. A third weak portion 1318 is formed in the area of ​​the third groove 13163. Alternatively, the third groove 13163 can be provided on the outer surface of the riveting body 131, or it can be provided on both the inner and outer surfaces of the riveting body 131, with the third grooves 13163 on both surfaces facing each other.

[0155] In order to make the stiffness of the first weak part 1311 less than the stiffness of the second weak part 1314, and the stiffness of the second weak part 1314 less than the stiffness of the third weak part 1318, the sum of the depths of the first grooves 13161 is greater than the sum of the depths of the second grooves 13162, and the sum of the depths of the second grooves 13162 is greater than the sum of the depths of the third grooves 13163.

[0156] The second groove 13162 can be a closed structure extending circumferentially along the riveting body 131, and the third groove 13163 can be a closed structure extending circumferentially along the riveting body 131.

[0157] In some embodiments, the riveting assembly 10 is a battery box, the first component 11 forms a housing space 111 for a battery cell 20, and the second component 12 is housed in the housing space 111. The second component 12 is used to divide the housing space 111 into sub-spaces 1111 for housing the battery cell 20.

[0158] The first component 11 is the battery box body, and the second component 12 is the battery box mounting bracket.

[0159] The riveting 13 of the battery box can extend into the first hollow part 121 and limit and lock the second wall 123 and the first connecting part 112 within the first hollow part 121, reducing the risk of relative wobbling of the first component 11 and the second component 12 due to the gap 16 between the second wall 123 and the first connecting part 112, improving the connection stability between the box and the mounting bracket, thereby improving the installation stability of the battery cell 20 installed in the subspace 1111.

[0160] This application also provides a battery 100, which includes a battery cell 20 and the battery case provided in the above embodiments.

[0161] There may be one or more battery cells 20, where "more" means two or more. The battery cells 20 are housed within the receiving space 111 of the first component 11 of the battery box, and are located within the subspace 1111 defined by the first component 11 and the second component 12.

[0162] The battery 100 includes the battery box provided in the above embodiments, which enables a stable connection between the battery box body and the mounting bracket, thereby improving the installation stability of the battery cell 20 in the battery box.

[0163] This application provides an electrical device, which includes the battery 100 provided in the above embodiment.

[0164] like Figure 14 As shown, this application embodiment provides an assembly method for a riveting assembly 10, including:

[0165] S100, a first component 11, a second component 12, and a riveting member 13 are provided. The first component 11 has a first connecting portion 112. The second component 12 has a first hollow portion 121 and opposing first walls 122 and second walls 123. The first connecting portion 112 is located on the side of the second wall 123 away from the first wall 122. The riveting member 13 includes a riveting body 131. Along the axial direction of the riveting body 131, the riveting body 131 has a first weak portion 1311 and a first limiting portion 1312 spaced apart.

[0166] S200, the riveting body 131 is passed through the first wall 122, the first hollow part 121, the second wall 123 and the first connecting part 112 in sequence;

[0167] S300, the riveting member 13 is pressed to make the first weak part 1311 protrude radially along the riveting body 131 to form the second limiting part 1313, so that the first connecting part 112 and the second wall 123 are connected between the first limiting part 1312 and the second limiting part 1313.

[0168] In step S200, after the riveting body 131 passes through the first wall 122, the second wall 123, and the first connecting portion 112 in sequence, one end of the riveting portion 1317 of the riveting body 131 abuts against the first abutting portion 1161 of the first support portion 116, and the first weak portion 1311 is located on the side of the second wall 123 away from the first connecting portion 112, and the first limiting portion 1312 is located on the side of the first connecting portion 112 away from the second wall 123. Taking the abutting position of the riveting body 131 and the first abutting portion 1161 as the support force point, the first weak portion 1311 is deformed into the second limiting portion 1313 by pressing the riveting body 131.

[0169] A limiting space is formed between the first limiting part 1312 and the second limiting part 1313 to lock the second wall 123 and the first connecting part 112, thereby connecting the first component 11 and the second component 12. Therefore, this method allows the riveting member 13 to extend into the first hollow part 121 and limit and lock the second wall 123 and the first connecting part 112 within the first hollow part 121, reducing the risk of relative wobbling between the first component 11 and the second component 12 due to the gap 16 between the second wall 123 and the first connecting part 112, and improving the connection stability between the first component 11 and the second component 12. Furthermore, the riveting member 13 can extend into relatively concealed spaces to achieve locking, such as into the first hollow part 121, making its application range wider.

[0170] Please continue reading Figure 14 In some embodiments, the riveting body 131 is further provided with a second weak part 1314;

[0171] The assembly method of the riveting assembly 10 also includes:

[0172] S400, the riveting member 13 is riveted so that the second weak part 1314 protrudes radially along the riveting body 131 to form the first limiting part 1312.

[0173] In step S200, after the riveting body 131 passes through the first wall 122, the second wall 123, and the first connecting portion 112 in sequence, the second weak portion 1314 is located on the side of the first connecting portion 112 away from the second wall 123. After step S300 is executed, that is, after the first weak portion 1311 is deformed by press riveting to form the second limiting portion 1313, step S400 is executed. A riveting tool is inserted into the second hollow portion 1315 of the riveting body 131 and cooperates with the riveting portion 1317. The riveting tool is used to rivet the riveting body 131 so that the second weak portion 1314 is deformed into the first limiting portion 1312.

[0174] During the process of the second weak part 1314 deforming to form the first limiting part 1312, one end of the riveting body 131 located in the direction from the first weak part 1311 to the first limiting part 1312 will move towards the first connecting part 112. By riveting the riveting member 13, the movement of the end of the riveting body 131 can be adapted, thereby ensuring that the second weak part 1314 is deformed into a reliable first limiting part 1312.

[0175] Please continue reading Figure 14 In some embodiments, the riveting assembly 10 further includes a third member 14;

[0176] The assembly method of the riveting assembly 10 also includes:

[0177] S500, a third member 14 is provided and the third member 14 is located on the side of the first wall 122 away from the second wall 123;

[0178] The riveting component 13 also includes a flange portion 132, which is connected to one end of the riveting body 131 and located on the side of the third component 14 away from the first wall 122. The riveting body 131 also includes a third weak portion 1318, which is disposed near the flange portion 132 relative to the first weak portion 1311.

[0179] The assembly method of the riveting assembly 10 also includes:

[0180] S600, the riveting member 13 is pressed to make the third weak part 1318 protrude radially along the riveting body 131 to form the third limiting part 1319. The third limiting part 1319 is configured to fill the gap 16 between the first wall 122 and the third member 14, or the third limiting part 1319 is configured to cooperate with the flange 132 to connect the third member 14 and the first wall 122 between the flange 132 and the third limiting part 1319.

[0181] In step S500, one end of the third component 14 is connected to the second component 12, and a portion of the second component 12 extends to the side of the first wall 122 opposite to the second wall 123.

[0182] In step S200, the riveting body 131 passes sequentially through the third member 14, the first wall 122, the second wall 123, and the first connecting portion 112, with the flange portion 132 located on the side of the third member 14 facing away from the first wall 122. Step S600 is executed after step S400, because the first weak portion 1311 and the second weak portion 1314 are respectively deformed into the second limiting portion 1313 and the first limiting portion 1312, the second limiting portion 1313 abutting against the second wall 123 can serve as a supporting force point for deforming the third weak portion 1318 by pressing and riveting.

[0183] By pressing the riveting part 13, it is easier for the riveting tool to apply axial force to the riveting part 13, thereby improving the convenience and efficiency of assembly. The third limiting part 1319 either fills the gap 16 between the first wall 122 and the third component 14, or the third limiting part 1319 and the flange part 132 together limit the first wall 122 and the third component 14. Both of these measures can reduce the risk of the first wall 122 and the third component 14 wobbling in the axial direction of the riveting body 131, thereby improving the installation stability of the first wall 122 and the third component 14.

[0184] like Figure 15As shown in the illustration, this application also provides an assembly device 2000 for riveting components. The assembly device 2000 includes a providing device 2100 and an assembly device 2200. The providing device 2100 is configured to provide a first component 11, a second component 12, and a riveting member 13. The first component 11 has a first connecting portion 112. The second component 12 has a first hollow portion 121 and opposing first walls 122 and second walls 123. The first connecting portion 112 is located on the side of the second wall 123 facing away from the first wall 122. The riveting member 13 includes a riveting body 131. Along the axial direction of the riveting body 131, the riveting body 131 has a first weak portion 1311 and a first limiting portion 1312 spaced apart. The assembly device 2200 is configured to pass the riveting body 131 sequentially through the first wall 122, the first hollow portion 121, the second wall 123 and the first connecting portion 112 and apply force along the axial direction of the riveting body 131, so that the first weak portion 1311 protrudes radially along the riveting body 131 to form a second limiting portion 1313, so that the first connecting portion 112 and the second wall 123 are connected between the first limiting portion 1312 and the second limiting portion 1313.

[0185] This application provides a riveting assembly 10, which includes a first component 11, a second component 12, a riveting member 13, and a third component 14.

[0186] The first component 11 has a first connecting portion 112. The second component 12 has a first hollow portion 121 and opposing first walls 122 and second walls 123. The first connecting portion 112 is located on the side of the second wall 123 away from the first wall 122. The third component 14 extends along the first component 11 to the side of the first wall 122 away from the second wall 123. The riveting component 13 includes a riveting body 131 and a flange portion 132. The riveting body 131 includes a body portion 1316 and a riveting portion 1317. The riveting portion 1317 is connected to one end of the body portion 1316, and the flange portion 132 is connected to the end of the body portion 1316 away from the riveting portion 1317. The body portion 1316 of the riveting body 131 is provided with a third weak portion 1318, a first weak portion 1311 and a second weak portion 1314 in sequence along the direction from the flange portion 132 toward the riveting portion 1317. The stiffness of the third weak portion 1318 is greater than that of the second weak portion 1314, and the stiffness of the second weak portion 1314 is greater than that of the first weak portion 1311. The riveting body 131 passes sequentially through the third component 14, the first wall 122, the first hollow portion 121, the second wall 123, and the first connecting portion 112, so that the first weak portion 1311 is located inside the first hollow portion 121 and on the side of the second wall 123 away from the first connecting portion 112, and the second weak portion 1314 is located on the side of the first connecting portion 112 away from the second wall 123. The riveting part 13 is first pressed and riveted so that the first weak portion 1311 protrudes radially along the riveting body 131 and is deformed into the second limiting portion 1313. Then, the riveting tool is inserted into the second hollow portion 1315 of the riveting body 131 and engages with the thread of the riveting portion 1317. The riveting part 13 is riveted by the riveting tool so that the second weak portion 1314 protrudes radially along the riveting body 131 and is deformed into the first limiting portion 1312. The first limiting part 1312 and the second limiting part 1313 together limit and lock the second wall 123 and the first connecting wall, realizing the connection between the first component 11 and the second component 12. By pressing the riveting member 13, the third weak part 1318 is deformed into a third limiting part 1319 by protruding radially along the riveting body 131. The third limiting part 1319 fills the gap 16 between the first wall 122 and the third component 14, or the third limiting part 1319 and the flange part 132 together limit the first wall 122 and the third component 14. Therefore, the riveting member 13 can connect the first component 11, the second component 12 and the third component 14 into one unit, reducing the risk of the second component 12 moving relative to the first component 11 and improving the connection stability of the first component 11 and the second component 12. Therefore, the rivet 13 can extend into the first hollow portion 121 and limit and lock the second wall 123 and the first connecting portion 112 within the first hollow portion 121, reducing the risk of relative wobbling of the first component 11 and the second component 12 due to the gap between the second wall 123 and the first connecting portion 112, and improving the connection stability between the first component 11 and the second component 12.Furthermore, the rivet 13 can be inserted into a relatively concealed space to achieve locking, such as into the first hollow part 121, making the application range of the rivet 13 wider.

[0187] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A riveting assembly, characterized in that, include: The first component has a first connecting part; The second component has a first hollow portion and has opposing first and second walls; as well as A riveting component includes a riveting body configured to pass sequentially through a first wall, a first hollow portion, a second wall, and a first connecting portion, wherein the first connecting portion is located on the side of the second wall opposite to the first wall. Along the axial direction of the riveting body, the riveting body has a first weak portion and a first limiting portion spaced apart. The first weak portion is configured to protrude radially along the riveting body when the riveting body is subjected to force along the axial direction of the riveting body, so as to form a second limiting portion located within the first hollow portion, so that the first connecting portion and the second wall are connected between the first limiting portion and the second limiting portion. The riveting body is further provided with a second weak portion, which is configured to protrude radially from the riveting body when the riveting body is subjected to force along the axial direction of the riveting body, so as to form the first limiting portion. The stiffness of the first weak part is less than that of the second weak part; The riveting assembly further includes a third component located on the side of the first wall opposite to the second wall; The riveting component further includes a flange portion, which is connected to one end of the riveting body and located on the side of the third component opposite to the first wall.

2. The riveting assembly according to claim 1, characterized in that, The wall thickness of the first weak part is less than that of the second weak part, so that the stiffness of the first weak part is less than that of the second weak part.

3. The riveting assembly according to claim 1, characterized in that, The riveting body includes a body portion and a riveting portion. The first weak portion and the first limiting portion are both disposed on the body portion. The riveting portion is connected to the body portion and is located on the side of the first limiting portion away from the first weak portion. The riveting body has a second hollow portion, which is used to cooperate with a riveting tool that passes through the second hollow portion.

4. The riveting assembly according to claim 3, characterized in that, The riveting part is provided with internal threads for connecting with the riveting tool.

5. The riveting assembly according to claim 1, characterized in that, The riveting body further includes a third weak portion, which is configured to protrude radially from the riveting body when the riveting body is subjected to force along the axial direction, thereby forming a third limiting portion, which is configured to fill the gap between the first wall and the third component.

6. The riveting assembly according to claim 1, characterized in that, The riveting body also has a third weak portion, which is configured to protrude radially from the riveting body when the riveting body is subjected to force along the axial direction, so as to form a third limiting portion, so that the third member and the first wall are connected between the flange portion and the third limiting portion.

7. The riveting assembly according to claim 6, characterized in that, The stiffness of the third weak part is greater than that of the second weak part.

8. The riveting assembly according to claim 7, characterized in that, The wall thickness of the third weak part is greater than that of the second weak part, so that the stiffness of the third weak part is greater than that of the second weak part.

9. The riveting assembly according to claim 1, characterized in that, The riveting body has a second hollow portion, and the inner surface of the riveting body is provided with a first groove. The riveting body forms the first weak portion in the area of ​​the first groove.

10. The riveting assembly according to claim 9, characterized in that, The first groove is a closed structure that extends circumferentially along the riveting body.

11. The riveting assembly according to claim 1, characterized in that, The riveting assembly is a battery box. The first component forms a space for accommodating individual battery cells, and the second component is accommodated within the space. The second component is used to divide the space into sub-spaces for accommodating individual battery cells.

12. A battery, characterized in that, include: Battery cell; as well as According to claim 11, the riveting assembly is provided within the subspace.

13. An electrical appliance, characterized in that, include: The battery according to claim 12.

14. A method for assembling a riveting assembly, characterized in that, include: A first component, a second component, and a riveting member are provided. The first component has a first connecting portion; the second component has a first hollow portion and opposing first and second walls, with the first connecting portion located on the side of the second wall away from the first wall; the riveting member includes a riveting body, and along the axial direction of the riveting body, the riveting body has a first weak portion and a first limiting portion spaced apart, and the riveting body further includes a second weak portion, which is configured to protrude radially from the riveting body when the riveting body is subjected to force along the axial direction of the riveting body, thereby forming the first limiting portion; The riveting body passes sequentially through the first wall, the first hollow portion, the second wall, and the first connecting portion; The rivet is pressed into place so that the first weak part protrudes radially along the rivet body to form a second limiting part, so that the first connecting part and the second wall are connected between the first limiting part and the second limiting part. The assembly method of the riveting assembly further includes: Provide a third component and position the third component on the side of the first wall away from the second wall; The riveting component further includes a flange portion, which is connected to one end of the riveting body and located on the side of the third component opposite to the first wall.

15. The assembly method of the riveting assembly according to claim 14, characterized in that, The assembly method of the riveting assembly further includes: The rivet is pulled together so that the second weak part protrudes radially along the rivet body to form the first limiting part.

16. The assembly method of the riveting assembly according to claim 15, characterized in that, The assembly method of the riveting assembly further includes: The riveting body further includes a third weak portion, which is disposed relative to the first weak portion and close to the flange portion; The assembly method of the riveting assembly further includes: The rivet is pressed into place so that the third weak portion protrudes radially along the rivet body to form a third limiting portion. The third limiting portion is configured to fill the gap between the first wall and the third member, or the third limiting portion is configured to cooperate with the flange to connect the third member and the first wall between the flange and the third limiting portion.

17. An assembly device for riveting components, characterized in that, include: A providing device is configured to provide a first component, a second component, and a riveting member, wherein the first component has a first connecting portion; The second component has a first hollow portion, and the second component has opposing first and second walls. The first connecting portion is located on the side of the second wall away from the first wall. The riveting member includes a riveting body. Along the axial direction of the riveting body, the riveting body has a first weak portion and a first limiting portion spaced apart. The riveting body also has a second weak portion, which is configured to protrude radially from the riveting body when the riveting body is subjected to force along its axial direction, thereby forming the first limiting portion. The stiffness of the first weak portion is less than the stiffness of the second weak portion. The riveting assembly also includes a third component, which is located on the side of the first wall away from the second wall. The riveting member also includes a flange portion, which is connected to one end of the riveting body and located on the side of the third component away from the first wall. An assembly device is configured to pass the riveting body sequentially through the first wall, the first hollow portion, the second wall, and the first connecting portion, and to apply force along the axial direction of the riveting body, so that the first weak portion protrudes radially along the riveting body to form a second limiting portion, thereby connecting the first connecting portion and the second wall between the first limiting portion and the second limiting portion.

Images