Battery device and electric equipment

Abstract

The utility model relates to the technical field of battery equipment, and discloses a battery device and electric equipment. The battery device comprises a battery monomer assembly provided with an output electrode; the battery management assembly is provided with an input electrode, and the output electrode is electrically connected with the input electrode; the connecting assembly comprises a base, a protective cover and at least one connecting bolt, the protective cover comprises a cover body and a limiting structure, the cover body covers the base to form a containing space, the output electrode and the input electrode are connected in the containing space, the base is provided with an internal thread structure, the connecting bolt comprises a bolt head, and the bolt head is movably limited in the limiting structure. The connecting bolt penetrates out of the limiting structure and penetrates through the output electrode and the input electrode to be in threaded connection with the internal thread structure, and at least part of the bolt head abuts against the output electrode or the input electrode. According to the technical scheme, the problem that when the bolt is assembled or disassembled, the risk of electric shock of workers is caused by the exposed bolt head is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of battery equipment, and in particular, relates to a battery device and electrical equipment. Background Art

[0002] The output electrode of the battery cell assembly of the battery device is electrically connected to the input electrode of the battery management assembly, and the battery management assembly is electrically connected to the power load, so that the battery device is used to provide power to the power load. In the related art, the input electrode of the battery management assembly and the output electrode of the battery cell assembly are locked and compressed by bolts to form a good conductive state. When the output electrode of the battery cell assembly and the input electrode of the battery management assembly need to be assembled or disassembled for maintenance, the exposed bolt head causes the risk of electric shock to the staff. Utility Model Content

[0003] The purpose of the present application is to provide a battery device and electrical equipment, including but not limited to solving the problem of risk of electric shock to workers due to exposed bolt heads when assembling or disassembling the output electrodes of the battery cell assembly and the input electrodes of the battery management assembly of the battery device.

[0004] To achieve the above object, according to a first aspect of an embodiment of the present application, a battery device is provided, comprising:

[0005] A battery cell assembly having an output electrode;

[0006] A battery management component is provided with an input electrode, and an output electrode is electrically connected to the input electrode;

[0007] A connecting assembly includes a base, a protective cover and at least one connecting bolt. The protective cover includes a cover body and a limiting structure arranged on the cover body. The cover body covers the base to form a receiving space. The output electrode and the input electrode are connected in the receiving space. The base is provided with an internal thread structure. The connecting bolt includes a bolt head. The bolt head can be movably limited in the limiting structure. The connecting bolt passes through the limiting structure, passes through the output electrode and the input electrode, and is screwed to the internal thread structure. At least part of the bolt head abuts against the output electrode or the input electrode.

[0008] In the battery device, the input electrode of the battery management component and the output electrode of the battery cell component are connected and conducted through a connecting component, wherein the connecting component includes a base, a protective cover and at least one connecting bolt, the output electrode and the input electrode are connected in a receiving space formed by the base and the protective cover covering each other, and the connecting bolt passes through the output electrode and the input electrode and is screwed to the internal thread structure of the base, thereby locking the output electrode and the input electrode. In addition, the protective cover includes a cover body and a limiting structure, and the bolt head of the connecting bolt can be slidably limited in the limiting structure along the axial direction of the connecting bolt, so that the connecting bolt can be screwed to the internal thread structure. In this way, the output electrode, the input electrode and the connecting bolt are wrapped by covering the protective cover with the base to avoid exposure. When the staff assembles or disassembles for maintenance, the bolt head of the connecting bolt is limited in the limiting structure, thereby avoiding the staff from directly touching the bolt head of the connecting bolt, thereby reducing the risk of electric shock to the staff and improving the work safety of the staff.

[0009] In some embodiments of the present application, the output electrode and the input electrode are stacked on the base, and the limiting structure includes a limiting cylinder and a first limiting portion and a second limiting portion respectively arranged at both ends of the limiting cylinder, and the bolt head can be slidably arranged in the limiting cylinder along the axial direction of the limiting cylinder, and the first limiting portion and the second limiting portion block the bolt head to limit the bolt head from escaping from the limiting cylinder along the axial direction of the limiting cylinder, and the connecting bolt passes through the first limiting portion and passes through the output electrode and the input electrode.

[0010] In the battery device, the input electrode of the battery management component and the output electrode of the battery cell component are connected and conducted through a connecting component, wherein the connecting component includes a base, a protective cover and at least one connecting bolt, the output electrode and the input electrode are stacked on the base and are located in a receiving space formed by the base and the protective cover covering each other, and the connecting bolt passes through the output electrode and the input electrode and is screwed to the internal thread structure of the base, thereby locking the output electrode and the input electrode. In addition, the protective cover includes a cover body and a limiting structure, wherein the limiting structure includes a limiting barrel, a first limiting part and a second limiting part, and the bolt head of the connecting bolt can be slidably arranged in the limiting barrel along the axial direction of the connecting bolt, so that the connecting bolt can be screwed to be screwed to the internal thread structure, and the first limiting part and the second limiting part limit the bolt head from escaping from the limiting barrel along the axial direction of the limiting barrel. In this way, the output electrode, input electrode and connecting bolt are wrapped by the protective cover and the base cover to avoid exposure. When the staff performs assembly or disassembly maintenance, the bolt head of the connecting bolt is protected by the limiting cylinder, the first limiting part and the second limiting part, thereby preventing the staff from directly touching the bolt head of the connecting bolt, thereby reducing the risk of electric shock for the staff and improving the work safety of the staff.

[0011] In some embodiments of the present application, the limiting cylinder and the first limiting portion are both located in the accommodating space, which is beneficial to reducing the overall height of the protective cover and reducing the assembly space occupied by the connecting assembly during assembly.

[0012] In some embodiments of the present application, the bolt head includes a bolt step structure and a circumferential flange structure provided on the circumferential side wall of the bolt step structure, the first limiting portion and the second limiting portion block the circumferential flange structure, and one end of the bolt step structure away from the circumferential flange structure passes through the first limiting portion and abuts against the output electrode or the input electrode. In this way, the connecting bolt will not detach from the protective cover at will, and the frequency of the connecting bolt detaching from the protective cover and being lost is reduced.

[0013] In some embodiments of the present application, the limiting cylinder is provided with a radial assembly inlet, and stop flanges extending along the axial direction of the limiting cylinder are provided on both sides of the radial assembly inlet, the interval between the two stop flanges is smaller than the diameter of the circumferential flange structure, and the stop flanges are provided with an assembly notch, which is used to avoid the circumferential flange structure so that the bolt head can be assembled into the limiting cylinder along the radial direction of the limiting cylinder. In this way, the connecting bolt will not detach from the protective cover at will, and the frequency of the connecting bolt detaching from the protective cover and being lost is reduced.

[0014] In some embodiments of the present application, the second limiting portion is provided with a bolt tool hole, and the bolt tool hole is used for allowing a bolt tool to pass through to screw the connecting bolt, thereby facilitating the assembly or disassembly of the connecting bolt.

[0015] In some embodiments of the present application, the base is further provided with a plurality of first connection structures, and the cover body is provided with a plurality of second connection structures, and the plurality of first connection structures are detachably connected to the plurality of second connection structures in a one-to-one correspondence, so that the cover body covers the base to form a receiving space. In some embodiments of the present application, one of the first connection structure and the second connection structure is a hook, and the other of the first connection structure and the second connection structure is a card interface, and the hook is hooked on the card interface. This not only facilitates assembly and helps improve assembly efficiency, but also makes it easier for staff to remove and separate the protective cover from the base, thereby improving disassembly efficiency.

[0016] In some embodiments of the present application, the base is further provided with at least one first positioning portion, and the cover body is further provided with at least one second positioning portion, and the first positioning portion and the second positioning portion are positioned and matched. When the protective cover and the base are covered with each other, the protective cover and the base can achieve a fast and accurate covering operation, thereby improving assembly efficiency.

[0017] In some embodiments of the present application, the first connection structure and the first positioning portion are respectively arranged at two opposite side edges of the base, the second connection structure and the second positioning portion are respectively arranged at two opposite side edges of the cover body, and the first connection structure and the second connection structure are connected to each other after the first positioning portion and the second positioning portion are positioned and matched. When the protective cover and the base are covered with each other, the protective cover and the base can achieve a quick and accurate covering operation, thereby improving assembly efficiency.

[0018] In some embodiments of the present application, the base includes a base body and a nut, and the nut is embedded in the base body to form an internal thread structure.

[0019] In some embodiments of the present application, a third connection structure is further provided on a side of the seat body facing away from the protective cover, and the third connection structure is used for detachably connecting to the fixed installation body.

[0020] In some embodiments of the present application, the protective cover is an integrally formed component.

[0021] In some embodiments of the present application, the cover body, the limiting cylinder and the first limiting portion are an integrally formed structure, the second limiting portion is an independent component, and the second limiting portion is detachably connected to the end of the limiting cylinder.

[0022] According to a second aspect of an embodiment of the present application, an electrical device is provided, wherein the electrical device includes an electrical load; and the electrical device also includes the aforementioned battery device, and the electrical load is electrically connected to the battery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is an exploded schematic diagram of a battery box and a battery cell of a battery device according to an embodiment of the present application;

[0025] Figure 2 A cross-sectional schematic diagram of the assembly between a connection component, an input electrode of a battery management component, and an output electrode of a battery cell component in a battery device according to an embodiment of the present application;

[0026] Figure 3 The structure of the base of the connecting component in the battery device of the embodiment of the present application is schematically shown. Figure 1 ;

[0027] Figure 4The structure of the base of the connecting component in the battery device of the embodiment of the present application is schematically shown. Figure 2 ;

[0028] Figure 5 A schematic top view of a base of a connecting component in a battery device according to an embodiment of the present application;

[0029] Figure 6 for Figure 5 A bottom view of the base is shown;

[0030] Figure 7 for Figure 5 Schematic cross-sectional view along the AA direction;

[0031] Figure 8 The structure of the protective cover of the connecting component in the battery device of the embodiment of the present application is schematically shown. Figure 1 ;

[0032] Fig. 9 The structure of the protective cover of the connecting component in the battery device of the embodiment of the present application is schematically shown. Figure 2 ;

[0033] Fig.10 A schematic top view of a protective cover of a connecting component in a battery device according to an embodiment of the present application;

[0034] Fig.11 for Fig.10 A bottom view of the protective cover is shown;

[0035] Fig.12 for Fig.10 Schematic cross-sectional view in the middle BB direction;

[0036] Fig.13 A schematic diagram of the structure of a connecting bolt of a connecting assembly in a battery device according to an embodiment of the present application;

[0037] Fig.14 A schematic diagram of the structure of an electrical device according to an embodiment of the present application.

[0038] Among them, the reference numerals in the figures are:

[0039] 100. Battery cell;

[0040] 200. Battery device;

[0041] 210, battery box; 211, box body; 212, box cover; 213, assembly space;

[0042] 220. Battery management component; 221. Input electrode;

[0043] 230, connecting assembly; 231, base; 2311, internal thread structure; 2312, seat body; 2313, nut; 2314, first connecting structure; 2315, first positioning portion; 2316, third connecting structure; 232, protective cover; 2321, cover body; 2322, limiting structure; 2323, limiting cylinder; 23231, radial assembly entrance; 23232, stop flange; 23233, assembly notch; 2324, first limiting portion; 2325, second limiting portion; 23251, bolt tool hole; 2326, second connecting structure; 2327, second positioning portion; 233, connecting bolt; 2331, bolt head; 2332, bolt step structure; 2333, circumferential flange structure; 234, accommodating space;

[0044] 240, output electrode;

[0045] 400, electrical equipment; 410, electrical load; 420, control device; 430, vehicle frame; 440, wheels. DETAILED DESCRIPTION

[0046] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0047] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations (battery devices for such applications are generally referred to as energy storage batteries), but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields (battery devices for such applications are generally referred to as power batteries).

[0051] In the related art, the output electrode of the battery cell assembly of the battery device is electrically connected to the input electrode of the battery management assembly, and the battery management assembly is electrically connected to the power load, so that the battery device is used to provide power to the power load. In the related art, the input electrode of the battery management assembly and the output electrode of the battery cell assembly are locked and compressed by bolts to form a good conduction state. When the output electrode of the battery cell assembly and the input electrode of the battery management assembly need to be assembled or disassembled for maintenance, the exposed bolt head causes the risk of electric shock to the staff.

[0052] Based on the above considerations, an embodiment of the present application provides a battery device. In the battery device, the input electrode of the battery management component and the output electrode of the battery cell component are connected and conducted through a connecting component, wherein the connecting component includes a base, a protective cover and at least one connecting bolt, the output electrode and the input electrode are connected in the accommodation space formed by the base and the protective cover covering each other, and the connecting bolt passes through the limiting structure and passes through the output electrode and the input electrode and then is screwed to the internal thread structure of the base, thereby locking the output electrode and the input electrode. In addition, the protective cover includes a cover body and a limiting structure, and the bolt head of the connecting bolt can be slidably limited in the limiting structure along the axial direction of the connecting bolt, so that the connecting bolt can be screwed to the internal thread structure. In this way, the output electrode, the input electrode and the connecting bolt are wrapped by covering the protective cover with the base to avoid exposure. When the staff assembles or disassembles the maintenance, the bolt head of the connecting bolt is limited in the limiting structure, thereby avoiding the staff from directly touching the bolt head of the connecting bolt, thereby reducing the risk of electric shock to the staff and improving the work safety of the staff.

[0053] In order to illustrate the technical solutions provided by the embodiments of the present application, the following is a detailed description with reference to specific drawings and embodiments.

[0054] According to a first aspect of an embodiment of the present application, an embodiment of the present application provides a battery device 200. Figures 2 to 13 As shown, the battery device 200 includes a battery cell assembly, a battery management assembly 220 and a connection assembly 230. The battery cell assembly is provided with an output electrode 240. The battery management assembly 220 is provided with an input electrode 221. The input electrode 221 is used to be electrically connected to the output electrode 240 of the battery cell assembly. The connection assembly 230 includes a base 231, a protective cover 232 and at least one connecting bolt 233. The protective cover 232 includes a cover body 2321 and a limiting structure 2322 arranged on the cover body 2321. The cover body 2321 covers the base 231 to form a receiving space 234. The input electrode 221 is used to be electrically connected to the output electrode 240 of the battery cell assembly. The electrode 221 and the output electrode 240 are connected in the accommodating space 234, the base 231 is provided with an internal thread structure 2311, the connecting bolt 233 includes a bolt head 2331, the bolt head 2331 can be movably limited in the limiting structure 2322, that is, the bolt head 2331 can be slidably limited in the limiting structure 2322 along the axial direction of the connecting bolt 233, the connecting bolt 233 passes through the limiting structure 2322 and passes through the input electrode 221 and the output electrode 240 and is screwed to the internal thread structure 2311, and at least part of the bolt head 2331 abuts against the input electrode 221 or the output electrode 240.

[0055] In the battery device 200, the input electrode 221 of the battery management component 220 and the output electrode 240 of the battery cell component are connected and conducted through the connecting component 230, wherein the connecting component 230 includes a base 231, a protective cover 232 and at least one connecting bolt 233, and the input electrode 221 and the output electrode 240 are connected in a receiving space 234 formed by the base 231 and the protective cover 232 covering each other, and the connecting bolt 233 passes through the input electrode 221 and the output electrode 240 and is screwed to the internal thread structure 2311 of the base 231, thereby locking the input electrode 221 and the output electrode 240. Furthermore, the protective cover 232 includes a cover body 2321 and a limiting structure 2322. The bolt head 2331 of the connecting bolt 233 can be slidably limited in the limiting structure 2322 along the axial direction of the connecting bolt 233, so that the connecting bolt 233 can be screwed to be screwed to the internal thread structure 2311 to lock the input electrode 221 and the output electrode 240. In this way, the input electrode 221, the output electrode 240 and the connecting bolt 233 are wrapped by the protective cover 232 and the base 231 to avoid exposure. When the staff assembles or disassembles for maintenance, the bolt head 2331 of the connecting bolt 233 is limited in the limiting structure 2322, thereby preventing the staff from directly touching the bolt head 2331 of the connecting bolt 233, thereby reducing the risk of electric shock to the staff and improving the work safety of the staff.

[0056] In some embodiments of the present application, Figures 2 to 13As shown, the input electrode 221 and the output electrode 240 are stacked on the base 231, and the limiting structure 2322 includes a limiting cylinder 2323 and a first limiting portion 2324 and a second limiting portion 2325 respectively arranged at both ends of the limiting cylinder 2323, and the bolt head 2331 can be slidably arranged in the limiting cylinder 2323 along the axial direction of the limiting cylinder 2323, and the first limiting portion 2324 and the second limiting portion 2325 block the bolt head 2331 to limit the bolt head 2331 from escaping from the limiting cylinder 2323 along the axial direction of the limiting cylinder 2323, and the connecting bolt 233 passes through the first limiting portion 2324 and passes through the input electrode 221 and the output electrode 240, so that the connecting bolt 233 can be screwed to be screwed to the internal thread structure 2311 to lock the input electrode 221 and the output electrode 240. In the battery device 200, the input electrode 221 of the battery management component 220 and the output electrode 240 of the battery cell component are connected and conducted through the connecting component 230, wherein the connecting component 230 includes a base 231, a protective cover 232 and at least one connecting bolt 233, the input electrode 221 and the output electrode 240 are stacked on the base 231 and are located in a receiving space 234 formed by the base 231 and the protective cover 232 covering each other, and the connecting bolt 233 passes through the input electrode 221 and the output electrode 240 and is screwed to the internal thread structure 2311 of the base 231, thereby locking the input electrode 221 and the output electrode 240. In addition, the protective cover 232 includes a cover body 2321 and a limiting structure 2322, wherein the limiting structure 2322 includes a limiting cylinder 2323, a first limiting portion 2324 and a second limiting portion 2325, and the bolt head 2331 of the connecting bolt 233 can be slidably arranged in the limiting cylinder 2323 along the axial direction of the connecting bolt 233, so that the connecting bolt 233 can be screwed to be threadedly connected to the internal thread structure 2311, and the first limiting portion 2324 and the second limiting portion 2325 limit the bolt head 2331 from escaping from the limiting cylinder 2323 along the axial direction of the limiting cylinder 2323. In this way, the input electrode 221, the output electrode 240 and the connecting bolt 233 are wrapped by the protective cover 232 and the base 231 to avoid exposure. When the staff performs assembly or disassembly maintenance, the bolt head 2331 of the connecting bolt 233 is protected by the limiting cylinder 2323, the first limiting part 2324 and the second limiting part 2325, thereby preventing the staff from directly touching the bolt head 2331 of the connecting bolt 233, thereby reducing the risk of electric shock for the staff and improving the work safety of the staff.

[0057] like Figure 1As shown, the battery device 200 also includes a battery box 210 and a plurality of battery cells 100. The battery box 210 includes a box body 211 and a box cover 212. The box cover 212 covers the open end of the box body 211. The box body 211 and the box cover 212 cover to form an assembly space 213. A plurality of battery cells 100 are assembled in an array and distributed in the assembly space 213 to form a battery cell assembly. Among them, the battery cells 100 are used to store electrical energy or supply power. In addition, the battery management component 220 is arranged in the assembly space 213, and the output electrode of the battery management component 220 can pass through the outside of the assembly space 213, or the electrode of the electrical load extends into the assembly space 213, so that the output electrode of the battery management component 220 is connected and conducted with the electrode of the electrical load. The embodiment of the present application is preferably set so that the output electrode of the battery management component 220 passes through the outside of the assembly space 213. In some embodiments of the present application, the battery management component 220 can be integrated and designed as a high-voltage box.

[0058] In some embodiments of the present application, the battery cell 100 may be a secondary battery, which refers to a battery cell 100 that can be continuously used by activating active materials by charging after the battery cell 100 is discharged. The battery cell 100 may be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., and the embodiments of the present application are not limited thereto.

[0059] In some embodiments of the present application, Figure 2 As shown, the limiting cylinder 2323 and the first limiting portion 2324 are both located in the accommodation space 234. This makes the overall appearance of the protective cover 232 relatively square, and after being covered with the base 231, it presents a relatively square overall appearance. In addition, the limiting cylinder 2323 and the first limiting portion 2324 are both located in the accommodation space 234, and the outer side surface of the second limiting portion 2325 is substantially flush with the top surface of the cover body 2321 away from the base 231, which is conducive to reducing the overall height of the protective cover 232 and reducing the assembly space occupied by the connecting assembly 230 during assembly.

[0060] In other embodiments of the present application, at least a portion of the limiting cylinder 2323 and the second limiting portion 2325 may also be located outside the accommodation space 234, and the first limiting portion 2324 may be located inside the accommodation space 234, or may also be located outside the accommodation space 234. In this case, the length of the connecting bolt 233 is relatively long to meet the length requirement of being screwed to the internal thread structure 2311.

[0061] In some embodiments of the present application, Fig.13As shown, the bolt head 2331 includes a bolt step structure 2332 and a circumferential flange structure 2333 disposed on the circumferential side wall of the bolt step structure 2332. Figure 2 As shown, the first limiting portion 2324 and the second limiting portion 2325 block the circumferential flange structure 2333, and one end of the bolt step structure 2332 away from the circumferential flange structure 2333 passes through the first limiting portion 2324 and abuts against the input electrode 221 or the output electrode 240, thereby locking the input electrode 221 and the output electrode 240 on the base 231. In this way, the bolt head 2331 can slide in the limiting barrel 2323 along the axial direction of the limiting barrel 2323, so that the connecting bolt 233 can pass through or detach from the input electrode 221 and the output electrode 240, and be screwed to the internal thread structure 2311 of the base 231. Furthermore, when the protective cover 232 and the connecting bolt 233 are removed from the base 231 and placed aside, the first limiting portion 2324 and the second limiting portion 2325 block the circumferential flange structure 2333, so that the connecting bolt 233 will not detach from the protective cover 232 at will, thereby reducing the frequency of the connecting bolt 233 detaching from the protective cover 232 and being lost.

[0062] like Figure 8 As shown, in some embodiments of the present application, the limiting cylinder 2323 is provided with a radial assembly inlet 23231. Figure 2 , Fig.12 and Fig.13 As shown, the radial assembly inlet 23231 can avoid the shaft of the connecting bolt 233. In addition, stop flanges 23232 extending along the axial direction of the limiting cylinder 2323 are provided on both sides of the radial assembly inlet 23231, and the interval L between the two stop flanges 23232 is smaller than the diameter D of the circumferential flange structure 2333, that is, the stop flanges 23232 are used to limit the circumferential flange structure 2333 from escaping from the limiting cylinder 2323 along the radial direction of the limiting cylinder 2323. In addition, as shown in FIG. Figure 2 , Figure 8 and Fig.12As shown, the stop flange 23232 is provided with an assembly notch 23233, and the assembly notch 23233 is used to avoid the circumferential flange structure 2333, so that the bolt head 2331 is assembled into the limiting cylinder 2323 along the radial direction of the limiting cylinder 2323. When the connecting bolt 233 is assembled to the protective cover 232, the circumferential flange structure 2333 of the bolt head 2331 enters the limiting cylinder 2323 from the assembly notch 23233, and the radial assembly entrance 23231 makes way for the shaft of the connecting bolt 233, so that the end of the connecting bolt 233 away from the bolt head 2331 is in a state of passing through the first limiting portion 2324. After the connecting bolt 233 is installed on the protective cover 232, the first limiting portion 2324, the second limiting portion 2325 and the two stop flanges 23232 limit the circumferential flange structure 2333 of the bolt head 2331, so that the connecting bolt 233 will not detach from the protective cover 232 at will, reducing the frequency of the connecting bolt 233 detaching from the protective cover 232 and being lost.

[0063] In some embodiments of the present application, Figure 2 , Figures 8 to 10 , Fig.12 As shown, the second limiting portion 2325 is provided with a bolt tool hole 23251, and the bolt tool hole 23251 is used for a bolt tool to pass through to screw the connecting bolt 233. When the staff performs assembly or disassembly maintenance, the staff extends the bolt tool from the bolt tool hole into the limiting cylinder 2323 and contacts the bolt head 2331, so that the connecting bolt 233 can be screwed, so as to facilitate assembly or disassembly of the connecting bolt 233.

[0064] In some embodiments of the present application, Figures 3 to 6 As shown, the base 231 is also provided with a plurality of first connection structures 2314, and, as shown in FIG. Figure 8 , Fig. 9 and Fig.12 As shown, the cover body 2321 is provided with a plurality of second connection structures 2326. When the cover body 2321 is covered with the base 231, the plurality of first connection structures 2314 and the plurality of second connection structures 2326 are detachably connected in a one-to-one correspondence, so that the cover body 2321 is covered with the base 231 to form a receiving space 234. Specifically, one of the first connection structure 2314 and the second connection structure 2326 is a hook, and the other of the first connection structure 2314 and the second connection structure 2326 is a card interface, and the hook is hooked on the card interface, so that the cover body 2321 is covered with the base 231 to form a receiving space 234. In this embodiment, the base 231 and the protective cover 232 are detachably connected by a card connection, which is not only convenient for assembly, but also helps to improve assembly efficiency. Moreover, the card connection method facilitates the disassembly of the protective cover 232 and the base 231, and is convenient for the staff to disassemble and separate the protective cover 232 from the base 231, thereby improving the disassembly efficiency.

[0065] like Figures 3 to 7 As shown, the base 231 is further provided with at least one first positioning portion 2315, and, as shown in FIG. Figure 8 and Fig.12 As shown, the cover body 2321 is also provided with at least one second positioning portion 2327. When the cover body 2321 is covered with the base 231, the first positioning portion 2315 is positioned and matched with the second positioning portion 2327, and then the plurality of first connection structures 2314 and the plurality of second connection structures 2326 are detachably connected one by one, so that the cover body 2321 is covered with the base 231 to form a receiving space 234. In this way, when the protective cover 232 and the base 231 are covered with each other, the first positioning portion 2315 and the second positioning portion 2327 are first aligned to achieve positioning, so that the protective cover 232 and the base 231 can be quickly and accurately positioned, and then the first connection structure 2314 and the second connection structure 2326 are connected to complete the mutual covering of the protective cover 232 and the base 231, so that the protective cover 232 and the base 231 can achieve a quick and accurate covering operation, thereby improving the assembly efficiency.

[0066] In some embodiments of the present application, Figures 3 to 6 As shown, the first connection structure 2314 and the first positioning portion 2315 are respectively disposed on the opposite side edges of the base 231. Figure 8 As shown, the second connection structure 2326 and the second positioning portion 2327 are respectively arranged on the opposite side edges of the cover body 2321. In addition, the first connection structure 2314 and the second connection structure 2326 are connected to each other after the first positioning portion 2315 and the second positioning portion 2327 are positioned and matched. That is to say, in this embodiment, when the protective cover 232 and the base 231 are covered with each other, the second positioning portion 2327 located on one side of the protective cover 232 is first aligned and matched with the corresponding first positioning portion 2315, and then the first positioning portion 2315 and the second positioning portion 2327 are used as a reference to turn the protective cover 232 relative to the base 231 until the first connection structure 2314 and the second connection structure 2326 are engaged with each other, and then the protective cover 232 and the base 231 are covered with each other, so that the protective cover 232 and the base 231 can be quickly and accurately covered, thereby improving the assembly efficiency.

[0067] In some other embodiments of the present application, the first connection structure 2314 and the first positioning portion 2315 may also be randomly distributed on the edge area of ​​the base 231. Correspondingly, the second connection structure 2326 and the second positioning portion 2327 are randomly distributed on the cover body 2321, and the second connection structure 2326 and the first connection structure 2314 are arranged one-to-one, and the second positioning portion 2327 and the first positioning portion 2315 are arranged one-to-one.

[0068] like Figures 3 to 7 As shown, in some embodiments of the present application, the base 231 includes a base body 2312 and a nut 2313, and the nut 2313 is embedded in the base body 2312 to form an internal thread structure 2311. In this embodiment, the nut 2313 is a metal nut, and a pre-embedded injection molding process is adopted to preset the nut 2313 in the cavity of the injection mold, and then molten plastic is poured into the cavity to wrap the nut 2313. After the molten plastic is solidified, the plastic solidifies into the base body 2312, and the nut 2313 is embedded and fixed on the base body 2312.

[0069] In some other embodiments of the present application, the internal thread structure 2311 may also be a threaded hole formed by a self-tapping screw on the seat body 2312 .

[0070] like Figures 2 to 4 , Figure 6 and Figure 7 As shown, in some embodiments of the present application, the side of the seat body 2312 away from the protective cover 232 is further provided with a third connection structure 2316, and the third connection structure 2316 is used to be detachably connected to a fixed installation body, wherein the fixed installation body can be the outer wall of the battery box 210, the outer wall of the electrical load, or other installation positions that can provide a support function, which is not limited here. Among them, the third connection structure 2316 is preferably set as a spring clip structure, and is fixed to the fixed installation body by the elastic force generated by the spring.

[0071] In some embodiments of the present application, the protective cover 232 is an integrally formed component. The protective cover 232 is a plastic part that is injection molded using an injection molding process. The integrally formed protective cover 232 has high molding efficiency and good molding consistency, which not only improves the yield rate, but also improves manufacturing efficiency.

[0072] In some other embodiments of the present application, the cover body 2321, the limiting cylinder 2323 and the first limiting portion 2324 are an integrally formed structure, and the cover body 2321, the limiting cylinder 2323 and the first limiting portion 2324 are plastic parts that are injection molded using an injection molding process. The second limiting portion 2325 is a relatively independent plastic component, and the second limiting portion 2325 is detachably connected to the end of the limiting cylinder 2323 by a snap-on method. In one embodiment, the protective cover 232 can be assembled first, and then the connecting bolt 233 is assembled to the protective cover 232 through the assembly notch 23233 on the limiting cylinder 2323 and the radial assembly inlet 23231. In another embodiment, the connecting bolt 233 can be first inserted into the opening of one end of the limiting cylinder 2323 away from the first limiting portion 2324, and then the second limiting portion 2325 can be connected to the opening of one end of the limiting cylinder 2323 away from the first limiting portion 2324, thereby completing the assembly of the protective cover 232 and the connecting bolt 233.

[0073] According to a second aspect of the embodiments of the present application, the embodiments of the present application further provide an electric device 400 , which includes an electric load 410 .

[0074] The electrical equipment 400 includes, but is not limited to, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, the electric toys may include, but are not limited to, fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. The spacecraft may include, but are not limited to, airplanes, rockets, space shuttles, and spacecraft, etc.

[0075] In some embodiments of the present application, the electric device 400 further includes the aforementioned battery device 200, that is, the electric device 400 uses one battery device 200 or multiple battery devices 200 in series, parallel or mixed connection, and the electric load 410 is electrically connected to the battery device 200. The battery device 200 is used to store electric energy, or the battery device 200 is used to provide electric energy to the electric load 410, so that the electric load 410 operates normally.

[0076] The electric device 400 is an electric car, and is assembled with the battery device 200. Fig.14 As shown, the battery device 200 is installed on the frame 430 of the electric vehicle. The electric vehicle includes a frame 430, a drive motor and a wheel 440. The battery device 200 and the drive motor are fixedly installed on the frame 430, and the wheel 440 is rotatably connected to the frame 430. In addition, the battery device 200 is electrically connected to the drive motor, and the drive motor is drivingly connected to the wheel 440. The battery device 200 provided in this application is used to power the drive motor (the drive motor is one of the power loads 410 of the power-consuming device 400), and the drive motor drives the wheel 440 to rotate, so that the electric vehicle can travel normally. In addition, the electric vehicle includes a control device 420, which is installed on the frame 430, and the control device 420 is electrically connected to the battery device 200. The control device 420 is used to control and monitor the charging and discharging working state of the battery device 200. In some electric vehicles, the battery box of the battery device 200 can be used as a part of the chassis structure of the electric vehicle. For example, part of the battery box may become at least a part of the floor of the electric vehicle, or part of the battery box may become at least a part of the cross beam and the longitudinal beam of the electric vehicle.

[0077] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A battery device, characterized in that: include: A battery cell assembly having an output electrode; A battery management component is provided with an input electrode, and the output electrode is electrically connected to the input electrode; A connecting assembly comprises a base, a protective cover and at least one connecting bolt, wherein the protective cover comprises a cover body and a limiting structure arranged on the cover body, the cover body covers the base to form a receiving space, the output electrode and the input electrode are connected in the receiving space, the base is provided with an internal thread structure, the connecting bolt comprises a bolt head, the bolt head can be movably limited in the limiting structure, the connecting bolt passes through the limiting structure and passes through the output electrode and the input electrode to be screwed to the internal thread structure, and at least a portion of the bolt head abuts against the output electrode or the input electrode.

2. The battery device according to claim 1, characterized in that: The output electrode and the input electrode are stacked on the base, the limiting structure includes a limiting cylinder and a first limiting portion and a second limiting portion respectively arranged at both ends of the limiting cylinder, the bolt head can be slidably arranged in the limiting cylinder along the axial direction of the limiting cylinder, the first limiting portion and the second limiting portion block the bolt head to limit the bolt head from escaping from the limiting cylinder along the axial direction of the limiting cylinder, and the connecting bolt passes through the first limiting portion and passes through the output electrode and the input electrode.

3. The battery device according to claim 2, characterized in that: The limiting cylinder and the first limiting portion are both located in the accommodating space.

4. The battery device according to claim 3, characterized in that: The bolt head includes a bolt step structure and a circumferential flange structure arranged on the circumferential side wall of the bolt step structure, the first limiting portion and the second limiting portion block the circumferential flange structure, and one end of the bolt step structure away from the circumferential flange structure passes through the first limiting portion and abuts against the output electrode or the input electrode.

5. The battery device according to claim 4, characterized in that: The limiting cylinder is provided with a radial assembly entrance, and stop flanges extending along the axial direction of the limiting cylinder are provided on both sides of the radial assembly entrance, and the interval between the two stop flanges is smaller than the diameter of the circumferential flange structure, and the stop flanges are provided with an assembly notch, and the assembly notch is used to avoid the circumferential flange structure so that the bolt head can be assembled into the limiting cylinder along the radial direction of the limiting cylinder.

6. The battery device according to claim 5, characterized in that: The second limiting portion is provided with a bolt tool hole, and the bolt tool hole is used for a bolt tool to pass through to screw the connecting bolt.

7. The battery device according to claim 2, characterized in that: The base is also provided with a plurality of first connection structures, and the cover body is provided with a plurality of second connection structures. The plurality of first connection structures are detachably connected with the plurality of second connection structures in a one-to-one correspondence, so that the cover body covers the base to form the accommodating space.

8. The battery device according to claim 7, characterized in that: One of the first connection structure and the second connection structure is a hook, and the other of the first connection structure and the second connection structure is a card interface, and the hook is hooked on the card interface.

9. The battery device according to claim 7, characterized in that: The base is further provided with at least one first positioning portion, and the cover body is further provided with at least one second positioning portion, and the first positioning portion is positioned and matched with the second positioning portion.

10. The battery device according to claim 9, characterized in that: The first connecting structure and the first positioning portion are respectively arranged on opposite side edges of the base, the second connecting structure and the second positioning portion are respectively arranged on opposite side edges of the cover body, and the first connecting structure and the second connecting structure are connected to each other after the first positioning portion and the second positioning portion are positioned and matched.

11. The battery device according to claim 2, characterized in that: The base includes a base body and a nut, wherein the nut is embedded in the base body to form the internal thread structure.

12. The battery device according to claim 11, characterized in that: A third connection structure is further provided on a side of the seat body facing away from the protective cover, and the third connection structure is used for being detachably connected to a fixed installation body.

13. The battery device according to any one of claims 1 to 12, characterized in that: The protective cover is an integrally formed component.

14. The battery device according to any one of claims 2 to 12, characterized in that: The cover body, the limiting cylinder and the first limiting portion are an integrally formed structure, the second limiting portion is an independent component, and the second limiting portion is detachably connected to the end of the limiting cylinder.

15. An electrical equipment, characterized in that: Including electrical load; The electrical equipment further comprises a battery device as claimed in any one of claims 1 to 14, and the electrical load is electrically connected to the battery device.

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