Battery device and electric appliance

Abstract

The application provides a battery device and an electric device. The battery device comprises a battery assembly, a sheet metal box body and a mounting assembly. The battery assembly is arranged in the sheet metal box body. The mounting assembly comprises a sheet metal backing plate and a sleeve assembly. The sheet metal backing plate is connected to the outer side of the sheet metal box body and is respectively formed by bending a metal plate. The sleeve assembly comprises a first threaded structure and a second threaded structure. One of the first threaded structure and the second threaded structure penetrates at least part of the sheet metal backing plate and is threadedly connected with the other threaded structure to be fixed with the sheet metal backing plate. The battery device can improve the overall rigidity of the mounting assembly.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device and electrical equipment. Background Technology

[0002] With the rapid development of new energy vehicles, their market share is increasing, and the market's requirements for the performance of battery devices in new energy vehicles are also getting higher and higher.

[0003] Currently, battery packs typically consist of a mounting assembly, a battery housing, and battery modules housed within the housing. The battery pack is secured to the vehicle via the mounting assembly, ensuring its stability. However, the mounting assembly suffers from insufficient localized rigidity. Utility Model Content

[0004] The battery device and electrical equipment provided in this application can improve the problem of insufficient local stiffness of the mounting components.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a battery device, which includes a battery assembly, a sheet metal housing, and a mounting assembly. The battery assembly is disposed within the sheet metal housing. The mounting assembly includes a sheet metal backing plate and a sleeve assembly. The sheet metal backing plate is connected to the outside of the sheet metal housing and is formed by bending metal sheets, respectively, along with the sheet metal housing. The sleeve assembly includes a first threaded structure and a second threaded structure. One of the first and second threaded structures passes through at least a portion of the sheet metal backing plate and is threadedly connected to the other threaded structure for fixing to the sheet metal backing plate.

[0006] The above solution achieves a reliable connection between the sleeve assembly and the sheet metal backing plate through threaded connections, improves the problem of insufficient weld seam stiffness, reduces the risk of weld seam failure between the sleeve assembly and the sheet metal backing plate, and thus effectively improves the overall stiffness of the mounting assembly. Furthermore, by forming the sheet metal backing plate and the sheet metal housing separately from bent metal sheets, the bending and shaping of the sheet metal backing plate and the sheet metal housing, as well as dimensional adjustment, are facilitated, resulting in lower costs.

[0007] In one embodiment, the first threaded structure has a threaded post; the second threaded structure has a threaded hole; the threaded post passes through at least a portion of the sheet metal liner and extends into the threaded hole, and is threadedly connected to the threaded hole.

[0008] The above solution can achieve a reliable connection between the sleeve assembly and the sheet metal liner, and compared with the arc welding solution, it effectively reduces the risk of failure at the arc welding gap.

[0009] In one embodiment, the sheet metal liner includes: First liner; The second liner is connected to the sheet metal box body, and along the height direction of the sheet metal box body, the second liner is located on one side of the first liner. In this configuration, along the height direction of the sheet metal box, a portion of the second liner is spaced apart from the first liner and encloses it to form a cavity; or, the second liner is fitted to the first liner.

[0010] The above-mentioned solution, by partially spacing the second liner plate from the first liner plate and enclosing it to form a cavity, can improve the bending stiffness of the sheet metal liner plate. Simultaneously, the cavity provides better cushioning and vibration damping, resulting in improved vibration resistance. Alternatively, by fitting the second liner plate tightly against the first liner plate, the overall thickness and structural stiffness of either the first or second liner plate are effectively increased, reducing the risk of deformation due to compression. Furthermore, the overall structure of the sheet metal liner plate is more compact and easier to assemble.

[0011] In one embodiment, the second threaded structure is located on the side of the second liner facing away from the first liner; the threaded post passes through the first liner and the second liner in sequence and is threadedly connected to the threaded hole. This facilitates the assembly and positioning of the first threaded structure and the second threaded structure, enabling rapid threaded connection between them.

[0012] In one embodiment, the end face of the threaded post is spaced apart from the bottom of the threaded hole. Thus, during the tightening process of the threaded post and the threaded hole, only the threaded tooth surface is subjected to force, and most of the torque is converted into clamping force between the sleeve assembly and the first or second liner. The interference from the end face of the threaded post and the bottom of the threaded hole is minimal, effectively locking the first and second liners.

[0013] In one embodiment, the threaded post passes through the first liner, and a portion of the second threaded structure passes through the second liner and is threadedly connected to the threaded post.

[0014] The above solution, given a fixed dimension of the sleeve assembly along the height of the sheet metal housing, can reduce the dimension of the threaded post and / or the second threaded structure along the height of the sheet metal housing and increase the helical area of ​​the threaded post and the threaded hole, thereby increasing the connection reliability between the first threaded structure and the second threaded structure, and thus enhancing the connection reliability between the sleeve assembly and the sheet metal liner.

[0015] In one embodiment, the end face of the second threaded structure facing the first liner is spaced apart from the first liner.

[0016] In the above scheme, only the thread tooth surface is subjected to force during the tightening process of the threaded column and the threaded hole. Most of the torque is converted into clamping force between the sleeve assembly and the first and second liners. The interference from the end face of the threaded column and the bottom of the threaded hole is small, which can effectively lock the first and second liners.

[0017] In one embodiment, along the height direction of the sheet metal housing, a portion of the second liner is spaced apart from the first liner; the sleeve assembly further includes a support sleeve, which is sleeved on the outside of the threaded post and clamped between the first liner and the second liner.

[0018] The above solution can support the first and second liner plates with a support sleeve, reducing the risk of the cavity formed by the first and second liner plates being deformed under pressure or even flattened, thereby effectively improving the overall bending stiffness of the sheet metal liner plates.

[0019] In one embodiment, the mounting assembly includes a first liner and a second liner, which are respectively connected to the sheet metal housing; and along the height direction of the sheet metal housing, a portion of the second liner is spaced apart from the first liner; a second threaded structure is clamped between the first liner and the second liner along the height direction of the sheet metal housing; the sleeve assembly also includes a third threaded structure; the first threaded structure and the third threaded structure are respectively threadedly connected to the second threaded structure.

[0020] The above solution not only achieves a reliable connection between the sleeve assembly and the sheet metal liner through threaded connection, effectively reducing the risk of failure at the arc-shaped weld seam, but also supports the first and second liners through a second threaded structure, reducing the risk of compression deformation or even flattening of the cavity formed by the first and second liners, thereby effectively improving the overall bending stiffness of the sheet metal liner.

[0021] To solve the above-mentioned technical problems, one technical solution adopted in this application is to provide an electrical device that includes the battery device mentioned above.

[0022] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 The structural diagram of the electrical equipment provided in this application; Figure 2 This is a first-view structural diagram of a mounting component provided in an embodiment of this application, mounted on a sheet metal housing. Figure 3 Provided for an embodiment of this application Figure 2 A cross-sectional view of the structure shown along the AA direction; Figure 4 A front view of a sleeve assembly provided in an embodiment of this application; Figure 5 A disassembly diagram of a mounting component provided in an embodiment of this application; Figure 6 Provided for another embodiment of this application Figure 2 A cross-sectional view of the structure shown along the AA direction; Figure 7 This is a structural schematic diagram from a second perspective of a mounting component provided in an embodiment of this application, mounted on a sheet metal housing. Figure 8 Provided for an embodiment of this application Figure 2 A cross-sectional view of the structure shown along the BB direction; Figure 9 A disassembly diagram of the mounting component provided in another embodiment of this application; Figure 10 Provided for another embodiment of this application Figure 2 A cross-sectional view of the structure shown along the BB direction.

[0024] Explanation of reference numerals in the attached figures 100 Electrical components; 200 Battery assembly; 10 Sheet metal enclosure; 20 Mounting assembly; 21 Sheet metal liner; 210 Cavity; 211 First liner; 212 Second liner; 22 Sleeve assembly; 221 Sleeve body; 222 Welding foot; 223 First thread structure; 224 Second thread structure; 225 Support sleeve; 226 Third thread structure. Detailed Implementation

[0025] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0030] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0031] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are 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, they should not be construed as limitations on the embodiments of this application.

[0032] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0033] In related technologies, the battery device includes a battery housing and a mounting assembly disposed outside the battery housing. The mounting assembly includes a liner and a mounting sleeve. The liner has a through hole. The mounting sleeve passes through the through hole and is welded to the liner around its circumference by welding (hereinafter referred to as arc welding).

[0034] However, the strength of the weld (i.e., the weld gap) in this design is much less than the strength of the liner plate. In one example, the weld strength is 60% of the liner plate strength, making the weld prone to failure. Weld failure refers to damage, breakage, or detachment at the weld joint where two parts are fused together, resulting in the loss of the connection and fixation function.

[0035] Based on this, the battery device provided in this application embodiment achieves a reliable connection between the sleeve assembly and the sheet metal liner through the threaded connection of the first thread structure and the second thread structure, and improves the problem of insufficient weld gap stiffness, reduces the risk of weld gap failure between the sleeve assembly and the sheet metal liner, thereby effectively improving the overall stiffness of the mounting assembly.

[0036] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the electrical device provided in this application. In one embodiment, an electrical device is provided, which includes an electrical component 100 and a battery device 200, wherein the battery device 200 is electrically connected to the electrical component 100. The battery device 200 is used to provide electrical energy to the electrical device, enabling the electrical component 100 to operate.

[0038] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools. 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. Spacecraft include airplanes, rockets, space shuttles, and spacecraft. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. 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.

[0039] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0040] The power-consuming device 100 can be an electrical component or device; the power-consuming device 100 can be a controller and electronic components, etc., and the controller can be a central processing unit (CPU), digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0041] In some examples, the electrical device can be a vehicle, and this application embodiment uses this as an example. The electrical device 100 can be the vehicle's lights (e.g., headlights, taillights, etc.), display screen, dashboard, control system (e.g., controller), etc. The vehicle may also include a frame, on which both the battery device 200 and the electrical device 100 are mounted.

[0042] Please see Figures 2 to 3 , Figure 2 This is a first-view structural diagram of a mounting component provided in an embodiment of this application, mounted on a sheet metal housing. Figure 3 Provided for an embodiment of this application Figure 2 A cross-sectional view of the structure along the AA direction.

[0043] In this embodiment, a battery device 200 is provided, which includes a battery assembly (not shown in the figure), a sheet metal housing 10, and a mounting assembly 20. The battery assembly is disposed within the sheet metal housing 10. The mounting assembly 20 includes a sheet metal liner 21 and a sleeve assembly 22. The sheet metal liner 21 is connected to the outside of the sheet metal housing 10 and is formed by bending metal sheets, respectively, from the sheet metal housing 10. The sleeve assembly 22 includes a first threaded structure 223 and a second threaded structure 224. One of the threaded structures 223 and 224 passes through at least a portion of the sheet metal liner 21 and is threadedly connected to the other threaded structure for fixing to the sheet metal liner 21.

[0044] A battery assembly comprises multiple battery cells. These battery cells can be connected in series, parallel, or a combination thereof to form a battery assembly. In other embodiments, the multiple battery cells can first be connected in series, parallel, or a combination thereof, and then arranged in a fixed manner to form a battery assembly. In still other embodiments, the multiple battery cells can first be connected in series, parallel, or a combination thereof, and then arranged in a fixed manner to form multiple components, which are then connected in series, parallel, or a combination thereof to form a whole.

[0045] As an example, multiple battery cells can be fixed together to form a battery assembly using cable ties or similar means. As another example, multiple battery cells can also be fixed together to form a battery assembly using end plates, side plates, or similar means.

[0046] The battery cell involved in this application refers to the smallest unit that stores and outputs electrical energy. The battery cell can be a secondary battery or a primary battery. The battery cell can be, but is not limited to, a metal battery, a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery. The battery cell can be cylindrical, flat, cuboid, or other shapes.

[0047] A single battery cell may include a casing, electrode assemblies, and other functional components. The casing includes end caps and a bottom shell. An end cap is a component that closes onto the opening of the bottom shell to isolate the internal environment of the battery cell from the external environment. The shape of the end cap may, without limitation, conform to the shape of the bottom shell. Optionally, the end cap may be made of a material with a certain degree of hardness and strength (such as aluminum alloy), so that the end cap is less prone to deformation under pressure and impact, giving the battery cell higher structural strength and improving safety performance.

[0048] The end cap may be provided with functional components such as electrode terminals. The electrode terminals can be used for electrical connection with electrode assemblies to output or input electrical energy into the battery cell. In some embodiments, the electrode terminals may include terminals. Terminals may include positive and negative terminals for current output and connection to external circuits. In some embodiments, the end cap may also be provided with an explosion-proof component for releasing internal pressure when the internal pressure or temperature of the battery cell reaches a threshold. The end cap can be made of various materials, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, and plastic. In some embodiments, an insulating component may be provided on the inner side of the end cap to isolate the electrical connection components within the bottom shell from the end cap, reducing the risk of short circuits. For example, the insulating component may be plastic, rubber, etc. The bottom shell is an assembly used to cooperate with the end cap to form the internal environment of the battery cell, wherein the formed internal environment can accommodate electrode assemblies, electrolytes, and other components. The bottom shell and the end cap may be independent components, and an opening may be provided on the bottom shell, with the end cap closing the opening to form the internal environment of the battery cell. The end cap and bottom shell can be integrated, without limitation. Specifically, the end cap and bottom shell can form a common connecting surface before other components are installed. When it is necessary to encapsulate the interior of the bottom shell, the end cap is then placed over it. The bottom shell can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the bottom shell can be determined according to the specific shape and size of the electrode assembly. The bottom shell can be made of various materials, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, and plastic.

[0049] Electrode assemblies are the components within a single battery cell where electrochemical reactions occur. The bottom casing may contain one or more electrode assemblies. Electrode assemblies are primarily formed by winding or stacking positive and negative electrode plates, typically with a separator between them. The portions of the positive and negative electrode plates containing active material constitute the main body of the electrode assembly, while the portions without active material each form a tab. The positive and negative tabs can be located together at one end of the main body or separately at both ends. During charging and discharging, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0050] The sheet metal housing 10 is used to provide a space for housing the battery pack, so as to accommodate and support the battery pack. Unlike aluminum profiles, the sheet metal housing 10 can be formed by bending and welding metal sheets in one or more integral processes.

[0051] In one example, the sheet metal enclosure 10 may be made of galvanized steel sheet, stainless steel sheet or aluminum alloy sheet.

[0052] In one example, the sheet metal housing 10 includes a bottom plate and a side plate. The side plate is disposed on the bottom plate and surrounds the bottom plate in the circumferential direction, and cooperates with the bottom plate to form a receiving cavity in which the battery assembly is disposed.

[0053] In one example, the base plate and / or side plate are sheet metal bent parts, the edges of the sheet metal bent parts are integrally bent to form connecting flanges, the connecting flanges of adjacent sheet metal bent parts are overlapped and fixed to each other, and enclosed to form a closed receiving cavity.

[0054] In one example, the battery assembly 200 also includes a cover (not shown) that covers the opening of the receiving cavity to interlock with the sheet metal housing 10, together defining a receiving space for accommodating the battery assembly. The cover may be a plate-like structure. Alternatively, both the sheet metal housing 10 and the cover may be hollow structures with openings on one side, with the opening side of the cover fitting over the opening side of the sheet metal housing 10. Of course, the sheet metal housing 10 and the cover can be of various shapes, such as cylinders, cuboids, etc. Exemplarily, the sheet metal housing 10 and / or the cover are formed by bending and welding metal sheets.

[0055] In one example, the cover fits onto the top of the sheet metal box 10. The cover can also be called the upper box cover, and the sheet metal box 10 can also be called the lower box.

[0056] Mounting assembly 20 is used to mount battery device 200 to electrical equipment.

[0057] In one example, the sheet metal liner 21 is connected to the side of the sheet metal housing 10 facing away from the receiving cavity in the first direction X and / or the second direction Y. The sheet metal liner 21 can be made of sheet metal materials with certain structural strength, high temperature resistance, and corrosion resistance. For example, steel, aluminum alloy, etc. The sheet metal liner 21 is directly connected to the sheet metal housing 10, which can increase the rigidity and strength of the overall structure and improve the stability and durability of the equipment.

[0058] Unlike aluminum profiles, sheet metal backing plates 21 can be formed by bending and welding metal sheets in one or more integral processes. In one example, sheet metal backing plates 21 can be made of galvanized steel sheets, stainless steel sheets, or thin aluminum alloy sheets.

[0059] In the battery assembly 200, the sheet metal liner 21 provides support for the sleeve assembly 22, the battery assembly, and other components, ensuring their proper installation and stable operation. The sheet metal liner 21 can be fixed to the sheet metal housing 10 by welding, bolting, adhesive, or other methods.

[0060] The sleeve assembly 22 is used to connect the sheet metal housing 10 to the electrical equipment. The sleeve assembly 22 is manufactured from metal, plastic, or composite materials. Metal materials offer high strength, good corrosion resistance, and machinability, making them suitable for applications requiring heavy loads and harsh environments. Examples include steel, stainless steel, and aluminum alloys. Plastic materials offer advantages such as light weight, low cost, and ease of processing and molding. Examples include nylon and polypropylene. Composite materials offer advantages such as high strength, light weight, and good corrosion resistance. Examples include carbon fiber composites.

[0061] One end of the sleeve assembly 22 is designed with a connection structure, such as threads, snaps, or flanges, to facilitate connection with electrical equipment or other components.

[0062] One of the first threaded structures 223 and the second threaded structure 224 has an external thread, and the other threaded structure has an internal thread. The internal thread matches and engages with the external thread to achieve a threaded connection between the first threaded structure 223 and the second threaded structure 224, thereby fixing the sleeve assembly 22 to the sheet metal liner 21.

[0063] In this embodiment, a reliable connection between the sleeve assembly 22 and the sheet metal liner 21 can be achieved through the threaded connection of the first threaded structure 223 and the second threaded structure 224. Compared with the method of using arc welding to connect the sleeve assembly 22 and the sheet metal liner 21, this method can improve the problem of insufficient weld gap stiffness, reduce the risk of weld gap failure between the sleeve assembly 22 and the sheet metal liner 21, and thus effectively improve the overall stiffness of the mounting assembly 20. In addition, by forming the sheet metal liner 21 and the sheet metal housing 10 by bending metal plates, it is convenient to bend and shape the sheet metal liner 21 and the sheet metal housing 10 and adjust their dimensions, resulting in lower costs.

[0064] In one embodiment, see Figure 3 and Figure 4 , Figure 4 This is a front view of a sleeve assembly 22 provided in an embodiment of this application. The sleeve assembly 22 includes a sleeve body 221 and a weld foot 222. The sleeve body 221 has a first surface. The weld foot 222 is integrally formed on the first surface of the sleeve body 221 and is connected to a sheet metal backing plate 21.

[0065] Here, "integrated design" refers to integral molding. The weld foot 222 is directly machined onto the sleeve body 221, rather than being a structure formed by other welding processes.

[0066] In one example, the sleeve body 221 is plate-shaped. Exemplarily, the sleeve body 221 is a circular plate. The plate-shaped sleeve body 221 has a first surface and a second surface facing away from each other.

[0067] In one example, the weld foot 222 is a robust weld joint structure formed by melting, pressurizing and cooling a boss integrally formed on the first surface of the sleeve body 221.

[0068] For example, multiple bosses are integrally punched onto the first surface of the sleeve body 221, and these bosses are attached to the sheet metal backing plate 21. During the connection process, a spot welding machine is pressed onto the sleeve assembly 22 and energized. The bosses melt instantly, and the spot welding machine is de-energized and pressurized to cool the bosses, forming weld legs 222, thereby firmly spot welding the sleeve assembly 22 to the sheet metal backing plate 21. This process does not require arc welding or welding wire.

[0069] It is understandable that weld foot 222 is not a weld that is welded on later; it is an integral structure that is part of the sleeve body 221.

[0070] In one example, sleeve assembly 22 includes a projection weld nut.

[0071] In this embodiment, the sleeve assembly 22 and the sheet metal backing plate 21 can be spot-welded together using the welding feet 222, resulting in good connection stability. Moreover, compared to the arc welding method, it effectively reduces the risk of failure at the arc weld seam.

[0072] In one embodiment, see Figure 4 There are multiple weld feet 222, which are spaced apart along the circumferential direction of the sleeve body 221.

[0073] In one example, multiple solder feet 222 are integrally formed on the sleeve body 221.

[0074] For example, the sleeve body 221 is circular, and multiple welding feet 222 are equally spaced along the circumferential direction of the sleeve body 221.

[0075] In one example, there are four weld feet 222, which are equally spaced on the first surface of the sleeve body 221.

[0076] In this embodiment, the sleeve body 221 can have good connection stability and reliability with the sheet metal liner 21 at various positions along its circumferential direction, thereby enhancing the uniformity of the connection between the sleeve body 221 and the sheet metal liner 21.

[0077] In one embodiment, see Figure 5 and Figure 6 , Figure 5 This is a disassembly diagram of the mounting component 20 provided in one embodiment of this application; Figure 6 Provided for another embodiment of this application Figure 2 The diagram shows a cross-sectional view along direction AA of the structure. The first threaded structure 223 has a threaded post. The second threaded structure 224 has a threaded hole; the threaded post passes through at least a portion of the sheet metal liner 21 and extends into the threaded hole, and is threadedly connected to the threaded hole.

[0078] The threaded post has an external thread on its outer surface, which is integrally formed on the threaded post. The threaded hole has an internal thread that matches the external thread, which is integrally formed on the inner surface of the second thread structure 224. After the external thread and the internal thread are engaged, the sleeve assembly 22 is securely connected to the sheet metal liner 21.

[0079] In one example, see Figure 6 The first threaded structure 223 also includes a nut, with a threaded post located on one side of the nut and extending in a direction away from the nut. The radial dimension of the nut is larger than the radial dimension of the threaded post. The surface of the nut facing the threaded post abuts against one side surface of the sheet metal liner 21.

[0080] For example, the vertical cross-section of the first thread structure 223 is T-shaped.

[0081] In one example, the second threaded structure 224 is a cylindrical tube. In one example, the outer diameter of the cylindrical tube is the same as the outer diameter of the nut, so that the sleeve assembly 22 has a uniform outer diameter.

[0082] In this embodiment, the sleeve assembly 22 is connected by threads, which can achieve a reliable connection between the sleeve assembly 22 and the sheet metal liner 21. Compared with the arc welding solution, it can effectively reduce the risk of failure at the arc welding gap. Moreover, the assembly is simpler and more convenient.

[0083] In one embodiment, see Figures 5 to 7 , Figure 7 A second-view structural schematic diagram of the mounting component 20 provided in an embodiment of this application, mounted on a sheet metal housing 10; Figure 8 Provided for an embodiment of this application Figure 2 A cross-sectional view of the structure shown along the BB direction.

[0084] The sheet metal backing plate 21 includes a first backing plate 211 and a second backing plate 212. The second backing plate 212 and the first backing plate 211 are respectively connected to the sheet metal housing 10. Along the height direction Z of the sheet metal housing 10, the second backing plate 212 is located on one side of the first backing plate 211. Specifically, along the height direction Z of the sheet metal housing 10, a portion of the second backing plate 212 is spaced apart from the first backing plate 211 and encloses a cavity 210 (see below). Figure 8 Alternatively, the second liner 212 may be fitted together with the first liner 211.

[0085] In embodiments where the sleeve assembly 22 includes a sleeve body 221 and a weld foot 222, and in embodiments where the sleeve assembly 22 includes a first thread structure 223 and a second thread structure 224, along the height direction Z of the sheet metal housing 10, a portion of the second liner 212 is spaced apart from the first liner 211 and surrounds it to form a cavity 210; or, the second liner 212 is fitted to the first liner 211.

[0086] In one example, both the first liner 211 and the second liner 212 are sheet metal bending parts.

[0087] In one example, the first liner 211 and the second liner 212 have opposing first and second sides, respectively. The first sides of the first liner 211 and the second liner 212 face the sheet metal housing 10 and are connected to the sheet metal housing 10. The portions of the first liner 211 and the second liner 212 near the first side can be fitted together. The second sides of the first liner 211 and the second liner 212 extend in a direction away from the sheet metal housing 10.

[0088] In one example, a portion of the second liner 212 is recessed along the height direction Z of the sheet metal housing 10 toward a direction away from the first liner 211, so as to be spaced apart from a portion of the first liner 211 and to define the cavity 210.

[0089] In one example, see Figure 3 or Figure 6 The second side of the second liner 212 is fitted to the second side of the first liner 211. For example, the entire first liner 211 and the entire second liner 212 are fitted together.

[0090] In this embodiment, by partially spacing the second liner 212 with the first liner 211 and enclosing it to form a cavity 210, the bending stiffness of the sheet metal liner 21 can be improved. Simultaneously, the cavity 210 provides better cushioning, shock absorption, and vibration resistance. Alternatively, by fitting the second liner 212 to the first liner 211, the overall thickness and structural stiffness of either the first or second liner 211 are effectively increased, reducing the risk of deformation due to compression. Furthermore, the overall structure of the sheet metal liner 21 is more compact and easier to assemble.

[0091] In one embodiment, see Figure 6 The second threaded structure 224 is located on the side of the second liner 212 opposite to the first liner 211. The threaded post passes through the first liner 211 and the second liner 212 in sequence and is threadedly connected to the threaded hole.

[0092] In one example, such as Figure 6 As shown, the first liner 211 and the second liner 212 are fitted to the corresponding sleeve assembly 22 to increase the structural strength of the sheet metal liner 21 and reduce the risk of the first liner 211 or the second liner 212 being squeezed and deformed during the screwing and tightening of the first thread structure 223 and the second thread structure 224.

[0093] In one example, the first liner 211 has a first through hole, the second liner 212 has a second through hole, and the threaded post passes through the first through hole and the second through hole in sequence and extends to the side surface of the second liner 212 opposite to the first liner 211.

[0094] In this embodiment, by having the threaded post pass through the first liner 211 and the second liner 212 and protrude from the second liner 212, it is convenient to assemble and position the first threaded structure 223 and the second threaded structure 224, so as to quickly realize the threaded connection between the first threaded structure 223 and the second threaded structure 224.

[0095] In one embodiment, see Figure 6 The end face of the threaded post is spaced apart from the bottom of the threaded hole.

[0096] In one example, along the axial direction of the threaded post, the first distance L1 between the end face of the threaded post and the bottom of the threaded hole is greater than or equal to 2 mm. For example, along the axial direction of the threaded post, the first distance L1 between the end face of the threaded post and the bottom of the threaded hole is 2 mm, 3 mm, 4 mm, 5 mm, or 6 mm, etc.

[0097] It is understandable that if the end face of the threaded stud abuts against the bottom of the threaded hole, the end face of the stud will generate an axial clamping reaction force to counteract the clamping force of the thread engagement. Therefore, when torque continues to be applied, most of the torque is used to overcome the end face squeezing friction, rather than to press the first liner 211 or the second liner 212.

[0098] Therefore, in this embodiment, by maintaining a certain distance between the threaded post and the bottom of the threaded hole, only the thread tooth surface is subjected to force during the tightening process of the threaded post and the threaded hole. Most of the torque is converted into clamping force between the sleeve assembly 22 and the first liner 211 or the second liner 212. The interference between the end face of the threaded post and the bottom of the threaded hole is small, which can effectively lock the first liner 211 and the second liner 212.

[0099] In one embodiment, see Figure 8 The threaded post passes through the first liner 211, and a portion of the second threaded structure 224 passes through the second liner 212 and is threadedly connected to the threaded post.

[0100] In one example, the positions of the first liner 211 and the second liner 212 corresponding to the sleeve assembly 22 can be spaced apart to form a cavity 210.

[0101] In one example, the first threaded structure 223 includes a first nut and a first threaded post. The first threaded post is located on one side of the first nut and extends in a direction away from the first nut. The outer surface of the first threaded post has external threads. The radial dimension of the first nut is larger than the radial dimension of the first threaded post. The surface of the first nut facing the first threaded post abuts against the surface of the first liner 211 facing away from the second liner 212.

[0102] The second threaded structure 224 includes a second nut and a second threaded post. The second threaded post is located on one side of the second nut and extends in a direction away from the second nut. The second threaded post has a threaded hole, and the inner surface of the threaded hole has an internal thread. The radial dimension of the second nut is larger than the radial dimension of the second threaded post. The surface of the second nut facing the second threaded post abuts against the surface of the second liner 212 facing away from the first liner 211.

[0103] For example, the vertical cross-sections of the first thread structure 223 and the second thread structure 224 are both "T" shaped.

[0104] The first threaded post passes through the first through hole and extends between the first liner 211 and the second liner 212. The second threaded post passes through the second through hole and extends between the first liner 211 and the second liner 212, and is threadedly connected to the first threaded post.

[0105] In this embodiment, when the dimension of the sleeve assembly 22 along the height direction Z of the sheet metal housing 10 is fixed, the dimension of the threaded post and / or the second threaded structure 224 along the height direction Z of the sheet metal housing 10 can be reduced, and the helical area of ​​the threaded post and the threaded hole can be increased to increase the connection reliability between the first threaded structure 223 and the second threaded structure 224, thereby enhancing the connection reliability between the sleeve assembly 22 and the sheet metal liner 21.

[0106] In one embodiment, see Figure 8 The end face of the second thread structure 224 facing the first liner 211 is spaced apart from the first liner 211.

[0107] In one example, the end face of the second threaded post facing the first liner 211 is spaced apart from the first liner 211.

[0108] In one example, see Figure 8 Along the axial direction of the second threaded post, the second distance L2 between the end face of the second threaded post facing the first liner 211 and the first liner 211 is greater than or equal to 2 mm. For example, along the axial direction of the second threaded post, the second distance L2 between the end face of the second threaded post facing the first liner 211 and the first liner 211 is 2 mm, 3 mm, 4 mm, 5 mm, or 6 mm, etc.

[0109] In this embodiment, during the tightening process of the threaded post and the threaded hole, only the thread tooth surface is subjected to force. Most of the torque is converted into clamping force between the sleeve assembly 22 and the first liner 211 and the second liner 212. The interference between the end face of the threaded post and the bottom of the threaded hole is small, which can effectively lock the first liner 211 and the second liner 212.

[0110] In one embodiment, see Figure 8 and Figure 9 , Figure 9 This is a disassembly diagram of a mounting assembly provided in another embodiment of this application. Along the height direction Z of the sheet metal housing 10, a portion of the second liner 212 is spaced apart from the first liner 211; the sleeve assembly 22 also includes a support sleeve 225, which is sleeved on the outside of the threaded post and clamped between the first liner 211 and the second liner 212.

[0111] In one example, the first liner 211 and the second liner 212 are positioned at intervals and cooperate with the sleeve assembly 22 to form a cavity 210. The support sleeve 225 is located inside the cavity 210 and abuts against the first liner 211 and the second liner 212 respectively to maintain the structure of the cavity 210, reduce the risk of the cavity 210 being squeezed and deformed, thereby enhancing the bending stiffness of the sheet metal liner 21.

[0112] In one example, see Figure 8 The support sleeve 225 is a hollow sleeve. The support sleeve 225 is sleeved on the outer side of the second threaded post and contacts the outer side of the second threaded post.

[0113] In this embodiment, the support sleeve 225 can be directly fitted onto the outside of the second threaded post, with no other connection between the two. Of course, in other examples, the support sleeve 225 and the second threaded post can also be threaded together to enhance the reliability of the connection.

[0114] In one example, if the sleeve assembly 22 includes a sleeve body 221 and a weld foot 222, the support sleeve 225 can also be clamped between the first liner 211 and the second liner 212, and abut against the first liner 211 and the second liner 212 respectively, so as to support the first liner 211 and the second liner 212, reduce the risk that the first liner 211 or the second liner 212 will be squeezed and deformed, affecting the structure of the cavity 210.

[0115] In this embodiment, the first liner 211 and the second liner 212 can be supported by the support sleeve 225, which reduces the risk of the cavity 210 formed by the first liner 211 and the second liner 212 being deformed under pressure or even flattened, thereby effectively improving the overall bending stiffness of the sheet metal liner 21.

[0116] In one embodiment, see Figure 10 , Figure 10 Provided for another embodiment of this application Figure 2 The diagram shows a cross-sectional view along the BB direction of the structure. The mounting assembly 20 includes a first liner 211 and a second liner 212, which are respectively connected to the sheet metal housing 10. Along the height direction Z of the sheet metal housing 10, a portion of the second liner 212 is spaced apart from the first liner 211. A second threaded structure 224, along the height direction Z of the sheet metal housing 10, is clamped between the first liner 211 and the second liner 212. The sleeve assembly 22 includes a third threaded structure 226, and the first threaded structure 223 and the third threaded structure 226 are respectively threadedly connected to the second threaded structure 224.

[0117] Along the height direction Z of the sheet metal housing 10, the sheet metal liner 21, corresponding to the sleeve assembly 22, defines the cavity 210. For example, the portion of the second liner 212 corresponding to the sleeve assembly 22 is recessed away from the first liner 211, forming a first recess. The portion of the first liner 211 corresponding to the sleeve assembly 22 is recessed away from the second liner 212, forming a second recess. The first and second recesses are positioned opposite each other along the height direction Z of the sheet metal housing 10, together forming the cavity 210.

[0118] The second threaded structure 224 is provided in the cavity 210 and abuts against the first liner 211 and the second liner 212 respectively along the height direction Z of the sheet metal box 10 to support the first liner 211 and the second liner 212.

[0119] In one example, see Figure 10 The first threaded structure 223 and the third threaded structure 226 have the same or similar structures. Specifically, the first threaded structure 223 passes through the first liner 211 from the side opposite to the second liner 212, extends into the cavity 210 defined by the sheet metal liner 21, and is threadedly connected to the second threaded structure 224 within the cavity 210. Similarly, the third threaded structure 226 passes through the second liner 212 from the side opposite to the first liner 211, extends into the cavity 210 defined by the sheet metal liner 21, and is threadedly connected to the second threaded structure 224 within the cavity 210.

[0120] In one example, the first thread structure 223 and the third thread structure 226 each have a threaded post, and the outer wall surface of the threaded post has an external thread. The second thread structure 224 is a hollow structure, and the inner wall surface of the second thread structure 224 is provided with an internal thread. The internal thread matches and is threadedly connected with the external thread to realize the thread structure of the first thread structure 223 and the third thread structure 226 to the second thread structure 224 respectively.

[0121] In another example, the threaded posts of the first threaded structure 223 and the third threaded structure 226 are hollow structures, and the inner wall surface of the threaded post has external threads. The outer wall surface of the second threaded structure 224 is provided with external threads, and both ends of the second threaded structure 224 extend into the threaded posts of the first threaded structure 223 and the third threaded structure 226, respectively, and are threadedly connected to the first threaded structure 223 and the third threaded structure 226.

[0122] In this example, the second threaded structure 224 can be a hollow sleeve or a solid sleeve.

[0123] In one example, the radial dimension of the threaded post of the first threaded structure 223 is smaller than the diameter of the first through hole, so that the first threaded structure 223 can be inserted into the cavity 210 and threadedly connected to the second threaded structure 224. The radial dimension of the threaded post of the third threaded structure 226 is smaller than the diameter of the second through hole, so that the third threaded structure 226 can be inserted into the cavity 210 and threadedly connected to the second threaded structure 224.

[0124] In one example, the second thread structure 224 has a T-shaped cross-section along the height direction Z of the sheet metal housing 10.

[0125] Of course, in other examples, when the second threaded structure 224 is clamped between the first liner 211 and the second liner 212 along the height direction Z of the sheet metal housing 10, the second threaded structure 224 can be fixedly connected to the first liner 211 and / or the second liner 212. In this case, the sleeve assembly 22 may not include the third threaded structure 226.

[0126] For example, the second threaded structure 224 can be fixedly connected to the first liner 211 and / or the second liner 212 by means of welding, snap-fitting, etc.

[0127] The sleeve assembly 22 provided in this embodiment can reliably connect the sleeve assembly 22 and the sheet metal liner 21 through a threaded connection, effectively reducing the risk of failure at the arc-shaped weld seam. Moreover, the second threaded structure 224 can support the first liner 211 and the second liner 212, reducing the risk of deformation or even flattening of the cavity 210 formed by the first liner 211 and the second liner 212 under pressure, thereby effectively improving the overall bending stiffness of the sheet metal liner 21.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Battery components; Sheet metal enclosure; The battery assembly is housed within the sheet metal enclosure; Mounted components include: A sheet metal backing plate is connected to the outside of the sheet metal box, and both the sheet metal backing plate and the sheet metal box are formed by bending metal plates. A sleeve assembly includes a first threaded structure and a second threaded structure, wherein one of the first threaded structure and the second threaded structure passes through at least a portion of the sheet metal liner and is threadedly connected to the other threaded structure for fixing to the sheet metal liner.

2. The battery device according to claim 1, characterized in that, The first threaded structure has a threaded post; the second threaded structure has a threaded hole; the threaded post passes through at least a portion of the sheet metal liner and extends into the threaded hole, and is threadedly connected to the threaded hole.

3. The battery device according to claim 2, characterized in that, The sheet metal lining plate includes: First liner; The second liner is connected to the sheet metal box body, and along the height direction of the sheet metal box body, the second liner is located on one side of the first liner. Wherein, along the height direction of the sheet metal box, a portion of the second liner is spaced apart from the first liner and surrounds it to form a cavity; or, the second liner is attached to the first liner.

4. The battery device according to claim 3, characterized in that, The second threaded structure is located on the side of the second liner opposite to the first liner; the threaded post passes through the first liner and the second liner in sequence and is threadedly connected to the threaded hole.

5. The battery device according to claim 4, characterized in that, The end face of the threaded post is spaced apart from the bottom of the threaded hole.

6. The battery device according to claim 3, characterized in that, The threaded post passes through the first liner, and a portion of the second threaded structure passes through the second liner and is threadedly connected to the threaded post.

7. The battery device according to claim 6, characterized in that, The second threaded structure is spaced apart from the end face of the first liner.

8. The battery device according to any one of claims 3-6, characterized in that, Along the height direction of the sheet metal box, a portion of the second liner is spaced apart from the first liner; The sleeve assembly further includes a support sleeve, which is sleeved on the outside of the threaded post and clamped between the first liner and the second liner.

9. The battery device according to claim 1, characterized in that, The mounting assembly includes a first liner and a second liner, the first liner and the second liner being respectively connected to the sheet metal box; and along the height direction of the sheet metal box, a portion of the second liner is spaced apart from the first liner. The second threaded structure is clamped between the first liner and the second liner along the height direction of the sheet metal housing; the sleeve assembly also includes a third threaded structure; the first threaded structure and the third threaded structure are respectively threadedly connected to the second threaded structure.

10. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-9.

Images