Battery device and electric equipment

Abstract

The embodiment of the utility model provides a battery device and electric equipment, and belongs to the technical field of battery devices. The battery device comprises a base body; a first electrical connector; a second electrical connector; a first fastener; the insulation column comprises an insulation column body and a first locking piece, the insulation column body is arranged on the base body, and the first locking piece is partially embedded in the insulation column body; the first fastening piece is connected with the first locking piece so as to lock the first electric connecting piece and the second electric connecting piece on the insulating column; wherein the insulation column body is provided with a first end face in the axial direction, and the first locking piece protrudes out of the first end face, so that the first electric connecting piece and the second electric connecting piece can be in direct contact with the first locking piece during installation, connection looseness caused by contact with the insulation column body is further reduced, and the reliability of the battery device is improved.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] In battery device technology, the reliability of battery cells is an issue that cannot be ignored. Therefore, how to improve the reliability of battery cells is a technical problem that needs to be solved urgently in battery device technology. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and an electrical device to reduce the contact between the first electrical connector, the second electrical connector and the insulating column body, thereby improving the reliability of the battery device.

[0005] In a first aspect, the present application provides a battery device, comprising:

[0006] matrix;

[0007] a first electrical connector;

[0008] a second electrical connector;

[0009] a first fastener; and

[0010] An insulating column comprising an insulating column body and a first locking member, wherein the insulating column body is disposed on the base, and the first locking member is partially embedded in the insulating column body; the first fastener and the first locking member are connected to lock the first electrical connector and the second electrical connector to the insulating column;

[0011] The insulating column body has a first end surface in its axial direction, and the first locking member protrudes from the first end surface.

[0012] In the technical solution of the embodiment of the present application, since the first locking member is arranged to protrude from the first end surface of the insulating column body, the first electrical connector and the second electrical connector can directly contact the first locking member during installation, making the connection more stable. It can also reduce the contact between the first electrical connector and the second electrical connector and the insulating column body, thereby reducing the loose connection caused by contact with the insulating column body and improving the reliability of the battery device.

[0013] In an optional embodiment, the length of the first locking member protruding from the first end surface is 0.01 mm to 3 mm.

[0014] Along the axial direction of the insulating column body, the length of the first locking member protruding from the first end surface is limited to 0.01 mm to 3 mm, so as to reduce the contact between the first electrical connector and the second electrical connector and the insulating column body.

[0015] In an optional embodiment, the length of the first locking member protruding from the first end surface is 0.05 mm to 3 mm.

[0016] Along the axial direction of the insulating column body, the length of the first locking member protruding from the first end surface is limited to 0.05 mm to 3 mm, so as to reduce the contact between the first electrical connector and the second electrical connector and the insulating column body.

[0017] In an optional embodiment, the battery device further includes a second fastener, wherein the second fastener is provided on the base;

[0018] The insulating column further includes a second locking piece, which is embedded in the insulating column body, and the second fastener is cooperatively connected with the second locking piece.

[0019] The installation of the insulating column on the base is achieved by arranging the second locking piece and the second fastening piece, and by the matching connection between the second locking piece and the second fastening piece.

[0020] In an optional embodiment, the second locking member is partially embedded in the insulating column body;

[0021] The insulating column body further has a second end surface in the axial direction, and the second locking member protrudes from the second end surface.

[0022] The first end face and the second end face are arranged opposite to each other along the axial direction of the insulating column body. By arranging the second locking piece to protrude from the second end face of the insulating column body, when the insulating column is installed on the base, the base can directly contact the second locking piece, and the connection is more stable.

[0023] In an optional embodiment, the length of the second locking member protruding from the second end surface is 0.01 mm to 3 mm.

[0024] Along the axial direction of the insulating column body, the length of the second locking member protruding from the second end surface is limited to 0.01 mm to 3 mm, so as to reduce the contact between the base and the insulating column body.

[0025] In an optional embodiment, the length of the second locking member protruding from the second end surface is 0.05 mm to 3 mm.

[0026] Along the axial direction of the insulating column body, the length of the second locking member protruding from the second end surface is limited to 0.05 mm to 3 mm, so as to reduce the contact between the base and the insulating column body.

[0027] In an optional embodiment, the outer peripheral surface of the first locking member is provided with knurled stripes; and / or,

[0028] The outer peripheral surface of the second locking member is provided with knurled stripes.

[0029] The knurled pattern on the outer circumference of the first locking element increases friction at the interface between the first locking element and the insulating column body, reducing the possibility of the first locking element falling off the insulating column body or rotating relative to the insulating column body. Similarly, the knurled pattern on the outer circumference of the second locking element increases friction at the interface between the second locking element and the insulating column body, reducing the possibility of the second locking element falling off the insulating column body or rotating relative to the insulating column body.

[0030] In an optional embodiment, the outer circumferential surface of the first locking member is provided with a first flange and a second flange, the first flange is closer to the first end face than the second flange, the outer circumferential radius of the first flange is larger than the outer circumferential radius of the second flange, and the surface of the second flange is formed with knurled stripes; and / or,

[0031] The outer wall of the second locking component is provided with a third flange and a fourth flange. The third flange is closer to the second end face than the fourth flange. The outer radius of the third flange is larger than the outer radius of the fourth flange. The surface of the fourth flange is formed with knurled stripes.

[0032] A first flange with a larger outer radius and a second flange with a smaller outer radius are provided on the outer circumference of the first locking member, and knurled patterns are formed on the surface of the second flange. The first flange increases the flange surface of the first locking member, facilitating injection molding of the insulating column body. The second flange and its knurled patterns increase friction at the contact surface between the first locking member and the insulating column body, reducing the possibility of the first locking member falling off the insulating column body or the first locking member rotating relative to the insulating column body. Similarly, a third flange with a larger outer radius and a fourth flange with a smaller outer radius are provided on the outer circumference of the second locking member, and knurled patterns are formed on the surface of the fourth flange. The third flange increases the flange surface of the second locking member, facilitating injection molding of the insulating column body, and the fourth flange and its knurled patterns increase friction at the contact surface between the second locking member and the insulating column body, reducing the possibility of the second locking member falling off the insulating column body or rotating relative to the insulating column body.

[0033] In an optional embodiment, the insulating column body is symmetrically arranged about a first plane, and the first plane is perpendicular to the axial direction of the insulating column body.

[0034] By arranging the insulating column body symmetrically about the first plane, the insulating column body forms a symmetrical structure, thereby reducing the possibility of reverse installation.

[0035] In an optional embodiment, the first locking component and the second locking component are symmetrically arranged with respect to the first plane.

[0036] While the insulating column body is symmetrically arranged about the first plane, the first locking member and the second locking member are symmetrically arranged about the first plane so that the insulating column as a whole forms a symmetrical structure, reducing the possibility of reverse installation and making the product state and appearance consistent.

[0037] In an optional embodiment, a fifth flange is provided on the outer peripheral surface of the insulating column body, and the cross section of the fifth flange is a regular polygon.

[0038] A fifth flange with a regular polygonal cross section is provided on the outer peripheral surface of the insulating column body so as to be compatible with tools such as a wrench, thereby facilitating the overall rotation of the insulating column.

[0039] In an optional embodiment, two fifth flanges are provided, and the two fifth flanges are symmetrically arranged with respect to the first plane.

[0040] When two fifth flanges are provided, the two fifth flanges can be symmetrically arranged with respect to the first plane, so that the insulating column body forms a symmetrical structure, thereby reducing the possibility of reverse installation.

[0041] In an optional embodiment, the cross section of the insulating column body is circular;

[0042] The minimum distance between the outer circumferential surface of the fifth flange and the central axis of the insulating column body is not less than the radius of the insulating column body.

[0043] By ensuring that the minimum distance between the outer circumference of the fifth flange and the central axis of the insulating column body is not less than (ie greater than or equal to) the radius of the insulating column body, an insulating column structure with a larger cross section at the position of the fifth flange is formed.

[0044] In an optional embodiment, the cross section of the insulating column body is circular;

[0045] The maximum distance between the outer circumferential surface of the fifth flange and the central axis of the insulating column body is not greater than the radius of the insulating column body.

[0046] By ensuring that the maximum distance between the outer circumference of the fifth flange and the central axis of the insulating column body is not greater than (ie, less than or equal to) the radius of the insulating column body, an insulating column structure with a smaller cross section at the position of the fifth flange is formed.

[0047] In an optional embodiment, the insulating column body is prismatic.

[0048] By making the insulating column body into a prismatic shape, a symmetrical structure can be formed, thereby reducing the possibility of reverse installation.

[0049] In an optional embodiment, the first locking member is a first nut, and the first fastening member is a first bolt;

[0050] The second locking member is a second nut, and the second fastening member is a second bolt.

[0051] The matching connection between the nut and the bolt is achieved by the matching of the corresponding locking part and the fastener.

[0052] In an optional embodiment, the first locking member is a first bolt, the first fastener is a first nut, the second locking member is a second nut, and the second fastener is a second bolt; or,

[0053] The first locking member is a first nut, the first fastening member is a first bolt, the second locking member is a second bolt, and the second fastening member is a second nut.

[0054] The matching connection between the nut and the bolt is achieved by the matching of the corresponding locking part and the fastener.

[0055] In an optional embodiment, the insulating column body is an injection molded part.

[0056] The insulating column body is injection molded, which reduces weight, reduces costs, and enriches supply chain resources. In addition, because the first locking member protrudes from the first end surface of the insulating column body, the possibility of injection molding material overflowing into the threaded hole during injection molding is reduced.

[0057] In an optional embodiment, the battery device includes a box body and a battery cell, the box body is provided with a battery compartment and an electrical compartment, the battery compartment is used to accommodate the battery cell, and the electrical compartment is provided with a high-voltage structure;

[0058] The base is arranged in the electrical compartment.

[0059] The base is set in the electrical compartment, and the insulating column can be used to connect the electrical lines in the electrical compartment.

[0060] In an optional embodiment, the electrical compartment is provided with a high-voltage box, and the base is the shell of the high-voltage box.

[0061] By setting the base as the housing of the high-voltage box, the insulating column is mounted on the housing of the high-voltage box.

[0062] In an optional embodiment, the first electrical connector is electrically connected to the battery cell, and the second electrical connector is electrically connected to the high-voltage structure.

[0063] The first electrical connector is electrically connected to the battery cell, and the second electrical connector is electrically connected to the high-voltage structure, so as to achieve electrical connection between the battery cell and the high-voltage structure.

[0064] In an optional embodiment, the battery device includes a box body and a battery cell, the battery cell is accommodated in the box body, and the base is the box body.

[0065] By setting the base as a case, the insulating column is mounted on the case of the battery device.

[0066] In a second aspect, the present application provides an electrical device comprising the battery device in the above embodiment.

[0067] The electrical equipment provided in the present application includes the battery device described in any one of the embodiments of the first aspect, and thus has the technical effects described in any one of the above embodiments, which will not be described in detail here.

[0068] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, which can be implemented in accordance with the contents of the specification, and to make other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0070] Figure 1 A schematic structural diagram of a vehicle in some embodiments of the present application;

[0071] Figure 2 Schematic diagram of the exploded structure of a battery device in some embodiments of the present application;

[0072] Figure 3 Schematic diagram of the exploded structure of a battery cell in some embodiments of the present application;

[0073] Figure 4 This is a schematic diagram of the assembly of the battery device at the insulating column according to the first embodiment of the present application;

[0074] Figure 5 for Figure 4 A schematic cross-sectional view along the axial direction of the insulating column;

[0075] Figure 6 for Figure 4 Schematic diagram of the structure of the middle insulating column;

[0076] Figure 7 for Figure 6 A schematic diagram of an axial cross-section of an insulating column;

[0077] Figure 8 for Figure 6 A schematic structural diagram of the first locking member;

[0078] Figure 9 for Figure 8 A schematic structural diagram of the first locking member from another angle;

[0079] Figure 10 for Figure 8 A schematic axial cross-sectional view of the first locking member;

[0080] Figure 11 This is a schematic structural diagram of the insulating column of Example 2 of the present application;

[0081] Figure 12 for Figure 11 A schematic diagram of an axial cross-section of an insulating column;

[0082] Figure 13 This is a schematic structural diagram of the insulating column of Example 3 of the present application;

[0083] Figure 14 for Figure 13 A schematic diagram of an axial cross-section of an insulating column;

[0084] Figure 15 This is a schematic structural diagram of the insulating column of the fourth embodiment of the present application;

[0085] Figure 16 for Figure 15 A schematic diagram of an axial cross-section of an insulating column;

[0086] Figure 17 This is a schematic structural diagram of the insulating column of the fifth embodiment of the present application;

[0087] Figure 18 for Figure 13 Schematic diagram of the axial cross-section of the insulating column.

[0088] The accompanying drawings in the specific implementation manner are as follows:

[0089] 1000, vehicle;

[0090] 100, battery device; 200, controller; 300, motor;

[0091] 10. Box body; 11. First part; 12. Second part;

[0092] 20. Battery cell; 21. Casing; 211. End cap; 212. Housing; 22. Cell assembly; 23. Terminal;

[0093] 30. Insulating column; 31. Insulating column body; 311. First end face; 312. Second end face; 313. Fifth flange; 3101. First body segment; 3102. Second body segment; 3103. Third body segment; 32. First locking member; 321. First flange; 322. Second flange; 33. Second locking member; 331. Third flange; 332. Fourth flange; 301. Knurled pattern;

[0094] 40. Matrix;

[0095] 50. First electrical connector;

[0096] 60. Second electrical connector;

[0097] 70. First fastener;

[0098] 80. Second fastener. DETAILED DESCRIPTION

[0099] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0100] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0101] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0102] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0103] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0104] Currently, market developments indicate that power battery applications are becoming increasingly widespread. Power battery systems are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As the application areas of power battery systems continue to expand, market demand is also growing.

[0105] Insulating columns are widely used in existing battery systems to support and secure current-carrying components such as copper and aluminum bars. These columns not only secure the components but also provide high-voltage insulation between them and the housing. Currently, most insulating columns on the market are molded using epoxy molding compound (EMC). This results in the internal threads of the columns often being flush with the end faces. When tightening with metal bolts, contact between the components and the column can easily create false torque, inducing creep. After vibration, the residual torque of the bolts securing the components decreases, increasing the risk of loosening.

[0106] Furthermore, existing insulating columns are typically asymmetrical, making them prone to reverse installation, resulting in inconsistent product appearance. Epoxy resin molding requires high-density, heavy, and costly materials, leading to a lack of supply chain resources.

[0107] In order to reduce the risk of bolt loosening, research has found that the internal thread of the insulating column can be made to protrude from the end face of the insulating column to reduce the contact between the current-passing part and the insulating column when locking, making the connection more stable and thereby improving the reliability of the power battery device.

[0108] Based on the above considerations, in order to solve the problem that the contact between the overcurrent part and the insulating column easily causes false torque when the bolt is locked, a battery device is designed, wherein the insulating column includes an insulating column body and a first locking part partially embedded in the insulating column body. The first locking part is arranged to protrude from the first end surface of the insulating column body, so that the first electrical connector and the second electrical connector can directly contact the first locking part during installation, which makes the connection more stable and reduces the contact between the first electrical connector and the second electrical connector and the insulating column body, thereby reducing the loose connection caused by contact with the insulating column body and improving the reliability of the battery device.

[0109] The battery device disclosed in the embodiments of the present application can be used, but is not limited to, in electrical equipment such as vehicles, ships, or aircraft. A power supply system of the electrical equipment can be composed of the battery device disclosed in the present application.

[0110] The technical solutions described in the embodiments of this application are applicable to various electrical devices using battery devices, such as mobile phones, tablets, laptop computers, electric toys, electric tools, battery-powered vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0111] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0112] Please refer to Figure 1 , Figure 1 Schematic diagram of the structure of the vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000. The battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000. For example, the battery device 100 may serve as an operating power source for the vehicle 1000. Alternatively, the battery device 100 may be used in the circuit system of the vehicle 1000, such as for the working power requirements during the startup, navigation and operation of the vehicle 1000.

[0113] The vehicle 1000 may further include a controller 200 and a motor 300 . The controller 200 is used to control the battery device 100 to supply power to the motor 300 , for example, to meet the power requirements of the vehicle 1000 during startup, navigation, and driving.

[0114] In some embodiments of the present application, the battery device 100 can serve not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0115] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the exploded structure of a battery device 100 provided in some embodiments of the present application. The battery device 100 includes a housing 10 and a battery cell 20, with the battery cell 20 housed within the housing 10. The housing 10 is used to provide a space for the battery cell 20 and can adopt various structures.

[0116] In some embodiments, the housing 10 may include a first portion 11 and a second portion 12, which cover each other and together define a storage space for accommodating the battery cells 20. The second portion 12 may be a hollow structure with one end open, and the first portion 11 may be a plate-like structure, with the first portion 11 covering the open side of the second portion 12, so that the first portion 11 and the second portion 12 together define a storage space. The first portion 11 and the second portion 12 may also be hollow structures with one end open, with the open side of the first portion 11 covering the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0117] In the battery device 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery device 20 may be housed within the housing 10. Of course, the battery device 100 may also be a battery device module formed by first connecting multiple battery cells 20 in series, in parallel, or in a hybrid connection, and then the multiple battery device modules are further connected in series, in parallel, or in a hybrid connection to form an entire battery device, and then housed within the housing 10. The battery device 100 may also include other structures, for example, the battery device 100 may further include a busbar component for electrically connecting the multiple battery cells 20.

[0118] Each battery cell 20 may be a secondary battery device. A secondary battery device refers to a battery cell that can be continuously used by activating active materials by charging after discharge.

[0119] Please refer to Figure 3 , Figure 3 The following is a schematic diagram of the exploded structure of a battery cell 20 provided in some embodiments of the present application. The battery cell 20 refers to the smallest unit that constitutes the battery device 100. Figure 3 The battery cell 20 includes a housing 21, a battery cell assembly 22 and other functional components.

[0120] The outer shell 21 includes an end cap 211 and a shell 212. The end cap 211 is a component that covers the opening of the shell 212 to isolate the internal environment of the battery cell 20 from the external environment. The shape of the end cap 211 can be adapted to the shape of the shell 212 to match the shell 212. Optionally, the end cap 211 can be made of a material with a certain hardness and strength (such as an aluminum alloy). This makes the end cap 211 less likely to deform when subjected to compression or collision, thereby providing the battery cell 20 with greater structural strength and improved safety. Functional components such as the terminal 23 can be provided on the end cap 211. The terminal 23 can be used to electrically connect to the battery cell assembly 22 to output or input electrical energy to the battery cell 20. In some embodiments, the end cap 211 can also be provided with a pressure relief mechanism for relieving internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The end cap 211 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, and plastic, and this embodiment of the present application does not impose any particular limitations thereon. In some embodiments, an insulating member can be disposed inside the end cap 211 to isolate the electrical connection components within the housing 212 from the end cap 211, thereby reducing the risk of short circuits. Exemplary materials include plastic, rubber, and the like.

[0121] The shell 212 is a component used to cooperate with the end cover 211 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the battery cell assembly 22, electrolyte and other components. The shell 212 and the end cover 211 can be independent components. An opening can be set on the shell 212, and the internal environment of the battery cell 20 is formed by covering the opening with the end cover 211. Without limitation, the end cover 211 and the shell 212 can also be integrated. Specifically, the end cover 211 and the shell 212 can form a common connection surface before other components are inserted into the shell. When the interior of the shell 212 needs to be encapsulated, the end cover 211 is covered with the shell 212. The shell 212 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 212 can be determined according to the specific shape and size of the battery cell assembly 22. The shell 212 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0122] The battery cell assembly 22 is a component in the battery cell 20 where electrochemical reactions occur. One or more battery cell assemblies 22 may be contained in the shell 212. The battery cell assembly 22 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the battery cell assembly 22, and the parts of the positive and negative electrode sheets without active materials each constitute a tab. The positive and negative electrode tabs may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery device 100, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs connect the electrode terminals to form a current loop.

[0123] One or more insulating pillars 30 may be further provided in the battery device 100 to connect the battery cells 20 to an electrical structure (eg, a high-voltage structure).

[0124] The following describes in detail the arrangement of the insulating pillar 30 in the battery device 100 .

[0125] Example 1

[0126] According to the first embodiment of the present application, referring to Figure 2 , and please refer to Figures 4 to 10 , Figure 4 Schematic diagram of the assembly of the battery device 100 at the insulating column 30 according to the first embodiment of the present application; Figure 5 for Figure 4 A schematic cross-sectional view along the axial direction of the insulating column 30; Figure 6 for Figure 4 A schematic structural diagram of the middle insulating column 30; Figure 7 for Figure 6 A schematic axial cross-sectional view of the insulating column 30; Figure 8 for Figure 6 A schematic structural diagram of the first locking member 32; Figure 9 for Figure 8 A schematic structural diagram of the first locking member 32 from another angle; Figure 10 for Figure 8 FIG. 2 is a schematic axial cross-sectional view of the first locking member 32 .

[0127] The present invention provides a battery device 100 , which includes a base 40 , a first electrical connector 50 , a second electrical connector 60 , a first fastener 70 , and an insulating column 30 .

[0128] The insulating post 30 includes an insulating post body 31 and a first locking member 32. The insulating post body 31 is disposed on the base 40, and the first locking member 32 is partially embedded in the insulating post body 31. A first fastener 70 is connected to the first locking member 32 to lock the first electrical connector 50 and the second electrical connector 60 to the insulating post 30.

[0129] The insulating column body 31 has a first end surface 311 in the axial direction, and the first locking member 32 protrudes from the first end surface 311 .

[0130] The first electrical connection member 50 is a first copper bar, and the second electrical connection member 60 is a second copper bar.

[0131] In the technical solution of the embodiment of the present application, since the first locking member 32 is provided to protrude from the first end surface 311 of the insulating column body 31, the first electrical connector 50 and the second electrical connector 60 can directly contact the first locking member 32 during installation, which makes the connection more stable and reduces the contact between the first electrical connector 50 and the second electrical connector 60 and the insulating column body 31, thereby reducing the loose connection caused by contact with the insulating column body 31 and improving the reliability of the battery device 100.

[0132] According to some embodiments of the present application, referring to Figure 7 The length d1 of the first locking member 32 protruding from the first end surface 311 is 0.01 mm to 3 mm.

[0133] Along the axial direction of the insulating pillar body 31 , the length d1 of the first locking member 32 protruding from the first end surface 311 is limited to 0.01 mm to 3 mm to reduce contact between the first and second electrical connectors 50 , 60 and the insulating pillar body 31 .

[0134] According to some embodiments of the present application, referring to Figure 7 The length d1 of the first locking member 32 protruding from the first end surface 311 is 0.05 mm to 3 mm.

[0135] Along the axial direction of the insulating pillar body 31 , the length d1 of the first locking member 32 protruding from the first end surface 311 is limited to 0.05 mm to 3 mm to reduce contact between the first and second electrical connectors 50 , 60 and the insulating pillar body 31 .

[0136] According to some embodiments of the present application, referring to Figure 5-Figure 7 The battery device 100 further includes a second fastener 80 , which is disposed on the base 40 .

[0137] The insulating column 30 further includes a second locking member 33 . The second locking member 33 is embedded in the insulating column body 31 . The second fastener 80 is coupled to the second locking member 33 .

[0138] The second locking member 33 and the second fastening member 80 are provided, and the second locking member 33 and the second fastening member 80 are matched and connected to each other, so that the insulating column 30 is installed on the base 40 .

[0139] According to some embodiments of the present application, referring to Figure 4-Figure 7 The second locking member 33 is partially embedded in the insulating column body 31 .

[0140] The insulating column body 31 further has a second end surface 312 in the axial direction, and the second locking member 33 protrudes from the second end surface 312 .

[0141] The first end face 311 and the second end face 312 are arranged opposite to each other along the axial direction of the insulating column body 31. By protruding the second locking member 33 from the second end face 312 of the insulating column body 31, when the insulating column 30 is installed on the base 40, the base 40 can directly contact the second locking member 33, making the connection more stable.

[0142] According to some embodiments of the present application, referring to Figure 7 The length d2 of the second locking member 33 protruding from the second end surface 312 is 0.01 mm to 3 mm.

[0143] Along the axial direction of the insulating column body 31 , the length d2 of the second locking member 33 protruding from the second end surface 312 is limited to 0.01 mm to 3 mm to reduce contact between the base 40 and the insulating column body 31 .

[0144] According to some embodiments of the present application, referring to Figure 7 The length d2 of the second locking member 33 protruding from the second end surface 312 is 0.05 mm to 3 mm.

[0145] Along the axial direction of the insulating column body 31 , the length d2 of the second locking member 33 protruding from the second end surface 312 is limited to 0.05 mm to 3 mm to reduce contact between the base 40 and the insulating column body 31 .

[0146] According to some embodiments of the present application, referring to Figure 7-10 The outer circumference of the first locking member 32 is provided with knurled stripes 301. The outer circumference of the second locking member 33 is provided with knurled stripes 301.

[0147] By providing knurled stripes 301 on the outer circumferential surface of the first locking member 32, the friction between the first locking member 32 and the insulating column body 31 is increased, thereby reducing the possibility of the first locking member 32 falling off the insulating column body 31 or the first locking member 32 rotating relative to the insulating column body 31.

[0148] Similarly, by providing knurled patterns 301 on the outer circumferential surface of the second locking member 33, the friction between the second locking member 33 and the insulating column body 31 is increased, thereby reducing the possibility of the second locking member 33 falling off the insulating column body 31 or the second locking member 33 rotating relative to the insulating column body 31.

[0149] According to some embodiments of the present application, referring to Figure 7-10The outer peripheral surface of the first locking member 32 is provided with a first flange 321 and a second flange 322. The first flange 321 is closer to the first end face 311 than the second flange 322. The outer peripheral radius L1 of the first flange 321 is larger than the outer peripheral radius L2 of the second flange 322. The surface of the second flange 322 is formed with knurled stripes 301.

[0150] The outer wall of the second locking member 33 is provided with a third flange 331 and a fourth flange 332. The third flange 331 is closer to the second end surface 312 than the fourth flange 332. The outer radius of the third flange 331 is larger than the outer radius of the fourth flange 332. The surface of the fourth flange 332 is formed with knurled stripes 301.

[0151] A first flange 321 with a larger outer radius L1 and a second flange 322 with a smaller outer radius L2 are provided on the outer circumferential surface of the first locking member 32, and knurled stripes 301 are formed on the surface of the second flange 322. The first flange 321 increases the flange surface of the first locking member 32 to facilitate injection molding of the insulating column body 31. The second flange 322 and its knurled stripes 301 increase the friction force of the contact surface between the first locking member 32 and the insulating column body 31, thereby reducing the possibility of the first locking member 32 falling off the insulating column body 31 or the first locking member 32 rotating relative to the insulating column body 31.

[0152] Similarly, a third flange 331 with a larger outer radius and a fourth flange 332 with a smaller outer radius are provided on the outer circumferential surface of the second locking member 33, and knurled stripes 301 are formed on the surface of the fourth flange 332. The flange surface of the second locking member 33 is enlarged by the third flange 331, which facilitates the injection molding of the insulating column body 31. The friction force of the contact surface between the second locking member 33 and the insulating column body 31 is increased by the fourth flange 332 and its knurled stripes 301, thereby reducing the possibility of the second locking member 33 falling off the insulating column body 31 or the second locking member 33 rotating relative to the insulating column body 31.

[0153] According to some embodiments of the present application, referring to Figure 7 The insulating column body 31 is symmetrically arranged about a first plane S, and the first plane S is perpendicular to the axial direction of the insulating column body 31. At this time, the first end surface 311 and the second end surface 312 are also symmetrically arranged about the first plane S.

[0154] By symmetrically arranging the insulating column body 31 about the first plane S, the insulating column body 31 forms a symmetrical structure, thereby reducing the possibility of reverse installation.

[0155] According to some embodiments of the present application, referring to Figure 7 The first locking member 32 and the second locking member 33 are symmetrically arranged about the first plane S.

[0156] The axis of the first locking member 32 and the axis of the second locking member 33 are located on the same straight line.

[0157] While the insulating column body 31 is symmetrically arranged about the first plane S, the first locking member 32 and the second locking member 33 are symmetrically arranged about the first plane S, so that the insulating column 30 as a whole forms a symmetrical structure, reducing the possibility of reverse installation and making the product state and appearance consistent.

[0158] According to some embodiments of the present application, referring to Figure 6 The outer peripheral surface of the insulating column body 31 is provided with a fifth flange 313, and the cross section of the fifth flange 313 is a regular polygon. Figure 6 As shown, the cross section of the fifth flange 313 is a regular hexagon. In other embodiments not shown in other figures, the cross section of the fifth flange can also be other regular polygons such as a regular triangle, a regular pentagon or a regular octagon.

[0159] For ease of understanding, the insulating column body 31 can be described as including a first body segment 3101, a second body segment 3102, and a third body segment 3103, which are sequentially connected along its axial direction. The first body segment 3101, the second body segment 3102, and the third body segment 3103 are coaxially arranged, and the first body segment 3101 and the third body segment 3103 are symmetrical about the center of the second body segment 3102. The first body segment 3101 forms a first end surface 311 on the side facing away from the second body segment 3102, and the third body segment 3103 forms a second end surface 312 on the side facing away from the second body segment 3102. A fifth flange 313 is provided on the second body segment 3102.

[0160] A fifth flange 313 having a regular polygonal cross section is provided on the outer peripheral surface of the insulating column body 31 so as to be compatible with tools such as a wrench, thereby facilitating the overall rotation of the insulating column 30 .

[0161] According to some embodiments of the present application, referring to Figure 6 and Figure 7 The cross section of the insulating column body 31 is circular. The minimum distance between the outer circumference of the fifth flange 313 and the central axis of the insulating column body 31 is not less than the radius of the insulating column body 31.

[0162] By ensuring that the minimum distance between the outer circumference of the fifth flange 313 and the central axis of the insulating column body 31 is not less than (that is, greater than or equal to) the radius of the insulating column body 31 , an insulating column 30 structure with a larger cross-section at the position of the fifth flange 313 is formed.

[0163] According to some embodiments of the present application, referring to Figure 6 and Figure 7 The first locking member 32 is a first nut, and the first fastening member 70 is a first bolt.

[0164] The second locking member 33 is a second nut, and the second fastening member 80 is a second bolt.

[0165] The first nut and the second nut can be made of metal materials such as brass, carbon steel, stainless steel or aluminum. Among them, the commonly used copper grades are C3604 and C6801; the commonly used lead brass model is HPb59-1.

[0166] The matching connection between the nut and the bolt is achieved by the matching of the corresponding locking part and the fastener.

[0167] According to some embodiments of the present application, referring to Figure 6 and Figure 7 The insulating column body 31 is an injection molded part. When manufacturing the insulating column 30, the first locking member 32 and the second locking member 33 are pre-fixed in an injection mold. Then, the molding material is injected into the mold, allowing the molding material to form around the locking members. Ultimately, a product with a tightly integrated plastic and metal component is obtained. This process is called insert molding.

[0168] The injection molding material of the insulating column body 31 can be a thermoplastic material or a thermosetting material, such as PP (Polypropylene), PA6 (Polyamide 6), PA66 (Polyamide 66), PC (Polycarbonate), ABS (Acrylonitrile Butadiene Styrene) or PBT (Polybutylene terephthalate), etc., and strength additives such as fibers of different components and talc powder can be added according to the structural strength. For example, plastics include PBT, PBT-GF30 (30% glass fiber (GF)), PBT-GF20 (20% glass fiber), PP, PP-G20, PP-GF30, PA6, PA6-GF10 (10% glass fiber), PA6-GF20, PA6-GF30, PA11-GF30; including but not limited to PA6, PA66, PA11 (Polyamide 11, polyundecalactam), PA12 (Polyamide 12, polylaurolactam), PBT, PP, PC and PC alloy materials, etc.

[0169] The insulating column body 31 is injection molded, which reduces weight, reduces costs, and enriches supply chain resources. In addition, since the first locking member 32 protrudes from the first end surface 311 of the insulating column body 31, the possibility of injection molding material overflowing into the threaded hole during injection molding can be reduced.

[0170] According to some embodiments of the present application, a battery device 100 includes a housing 10 and battery cells 20. The housing 10 includes a battery compartment and an electrical compartment. The battery compartment is used to accommodate the battery cells 20. The electrical compartment includes a high-voltage structure. A base 40 is disposed in the electrical compartment.

[0171] The base 40 is disposed in an electrical compartment, and the insulating column 30 can be used to connect electrical circuits in the electrical compartment.

[0172] According to some embodiments of the present application, the electrical compartment is provided with a high-voltage box, and the base 40 is the shell of the high-voltage box.

[0173] By setting the base 40 as the housing of the high-voltage box, the insulating column 30 is mounted on the housing of the high-voltage box.

[0174] According to some embodiments of the present application, the first electrical connector 50 is electrically connected to the battery cell 20 , and the second electrical connector 60 is electrically connected to the high-voltage structure.

[0175] The first electrical connector 50 is electrically connected to the battery cell 20 , and the second electrical connector 60 is electrically connected to the high-voltage structure, so that the battery cell 20 and the high-voltage structure are electrically connected.

[0176] According to some embodiments of the present application, the battery device 100 includes a box body 10 and a battery cell 20 . The battery cell 20 is accommodated in the box body 10 . The base 40 may also be the box body 10 .

[0177] By setting the base 40 as the case 10 , the insulating column 30 is mounted on the case 10 of the battery device 100 .

[0178] Example 2

[0179] According to the second embodiment of this application, please refer to Figure 11 and Figure 12 , Figure 11 This is a schematic structural diagram of the insulating column of Example 2 of the present application; Figure 12 for Figure 11 Schematic diagram of the axial cross-section of the insulating column.

[0180] In the second embodiment, the structures of the first locking member 32 and the second locking member 33 are the same as those in the first embodiment, and are not described again herein.

[0181] According to the second embodiment of this application, refer to Figure 11 and Figure 12 , which is different from the first embodiment, two fifth flanges 313 are provided, and the two fifth flanges 313 are symmetrically arranged about the first plane S.

[0182] For ease of understanding, the insulating column body 31 may include a first body segment 3101, a second body segment 3102, and a third body segment 3103, which are sequentially connected along its axial direction. The first body segment 3101, the second body segment 3102, and the third body segment 3103 are coaxially arranged, and the first body segment 3101 and the third body segment 3103 are symmetrical about the center of the second body segment 3102. The first body segment 3101 has a first end surface 311 formed on the side facing away from the second body segment 3102, and the third body segment 3103 has a second end surface 312 formed on the side facing away from the second body segment 3102.

[0183] The two fifth flanges 313 are respectively disposed on the first body section 3101 and the third body section 3103 .

[0184] When two fifth flanges 313 are provided, the two fifth flanges 313 can be symmetrically arranged with respect to the first plane S, so that the insulating column body 31 forms a symmetrical structure, thereby reducing the possibility of reverse installation.

[0185] Further, refer to Figure 11 and Figure 12 The cross section of the insulating column body 31 is circular. The maximum distance between the outer circumference of the fifth flange 313 and the central axis of the insulating column body 31 is not greater than the radius of the insulating column body 31.

[0186] At this time, the insulating column 30 is a vertically symmetrical structure with two small polygonal prisms at both ends and a large cylindrical shape in the middle. The cross section of the polygonal prism is smaller than that of the cylindrical shape, which effectively prevents the assembly direction from being reversed.

[0187] By ensuring that the maximum distance between the outer circumference of the fifth flange 313 and the central axis of the insulating column body 31 is not greater than (ie, less than or equal to) the radius of the insulating column body 31 , an insulating column structure with a smaller cross-section at the position of the fifth flange 313 is formed.

[0188] Example 3

[0189] According to the third embodiment of this application, please refer to Figure 13 and Figure 14 , Figure 13 This is a schematic structural diagram of the insulating column of Example 3 of the present application; Figure 14 for Figure 13 Schematic diagram of the axial cross-section of the insulating column.

[0190] In the third embodiment, the structures of the first locking member 32 and the second locking member 33 are the same as those in the first embodiment, and are not described again here.

[0191] According to the third embodiment of the present application, refer to Figure 13 and Figure 14, which is different from the first embodiment, two fifth flanges 313 are provided, and the two fifth flanges 313 are symmetrically arranged about the first plane S.

[0192] For ease of understanding, the insulating column body 31 may include a first body segment 3101, a second body segment 3102, and a third body segment 3103, which are sequentially connected along its axial direction. The first body segment 3101, the second body segment 3102, and the third body segment 3103 are coaxially arranged, and the first body segment 3101 and the third body segment 3103 are symmetrical about the center of the second body segment 3102. The first body segment 3101 has a first end surface 311 formed on the side facing away from the second body segment 3102, and the third body segment 3103 has a second end surface 312 formed on the side facing away from the second body segment 3102.

[0193] The two fifth flanges 313 are respectively disposed on the first body section 3101 and the third body section 3103 .

[0194] When two fifth flanges 313 are provided, the two fifth flanges 313 can be symmetrically arranged with respect to the first plane S, so that the insulating column body 31 forms a symmetrical structure, thereby reducing the possibility of reverse installation.

[0195] Further, refer to Figure 13 and Figure 14 The cross section of the insulating column body 31 is circular. The minimum distance between the outer circumference of the fifth flange 313 and the central axis of the insulating column body 31 is not less than the radius of the insulating column body 31.

[0196] By ensuring that the minimum distance between the outer circumference of the fifth flange 313 and the central axis of the insulating column body 31 is not less than (that is, greater than or equal to) the radius of the insulating column body 31 , an insulating column structure with a larger cross-section at the position of the fifth flange 313 is formed.

[0197] At this time, the insulating column 30 is a vertically symmetrical structure with two large polygonal prisms at both ends and a small cylindrical shape in the middle. The cross section of the polygonal prism is larger than that of the cylindrical shape, which effectively prevents the assembly direction from being reversed.

[0198] Example 4

[0199] According to the fourth embodiment of this application, please refer to Figure 15 and Figure 16 , Figure 15 This is a schematic structural diagram of the insulating column of the fourth embodiment of the present application; Figure 16 for Figure 15 Schematic diagram of the axial cross-section of the insulating column.

[0200] In the fourth embodiment, the structures of the first locking member 32 and the second locking member 33 are the same as those in the first embodiment, and are not described again here.

[0201] According to the fourth embodiment of the present application, referring to Figure 15 and Figure 16 , which is different from the first embodiment, the insulating column body 31 is prismatic.

[0202] By making the insulating column body 31 into a prismatic shape, a symmetrical structure can be formed, thereby reducing the possibility of reverse installation.

[0203] Example 5

[0204] According to the fifth embodiment of this application, please refer to Figure 17 and Figure 18 , Figure 17 This is a schematic structural diagram of the insulating column of the fifth embodiment of the present application; Figure 18 for Figure 13 Schematic diagram of the axial cross-section of the insulating column.

[0205] In the fifth embodiment, the first locking member 32 is the same as that in the first embodiment and will not be described again.

[0206] According to Example 5 of this application, refer to Figure 17 and Figure 18 Unlike the first embodiment, the insulating column body 31 has an asymmetric structure. Specifically, for ease of understanding, the insulating column body 31 can be configured to include a first body segment 3101 and a second body segment 3102 connected in sequence along its axial direction, with the first body segment 3101 and the second body segment 3102 being coaxially arranged. The fifth flange 313 is provided on the first body segment 3101 to form an asymmetric structure.

[0207] Further, refer to Figure 17 and Figure 18 The second locking member 33 is a second bolt, and correspondingly, the second fastening member 80 is a second nut.

[0208] The nuts and bolts work together to achieve a mating connection between the corresponding locking elements and the fasteners. Furthermore, the insulating column 30 features an asymmetrical structure with a fifth flange 313 on one end engaging a first nut with a first locking element 32, and a second locking element 33 on the other end engaging a second bolt, effectively preventing reverse assembly.

[0209] In other embodiments, the first locking member 32 may be a first bolt, the first fastening member 70 may be a first nut, the second locking member 33 may be a second nut, and the second fastening member 80 may be a second bolt.

[0210] According to some embodiments of the present application, the present application further provides an electrical device, comprising the battery device 100 of any of the above solutions, and the battery device 100 is used to provide electrical energy to the electrical device.

[0211] The power-consuming device may be any of the aforementioned devices or systems using the battery device 100 .

[0212] According to some embodiments of the present application, see Figure 2 、 Figures 4 to 7 The present application provides a battery device 100, including a housing 10, a battery cell 20, an insulating column 30, a base 40, a first electrical connector 50, a second electrical connector 60, a first fastener 70, and a second fastener 80. The housing 10 includes a battery compartment and an electrical compartment. The battery compartment is used to accommodate the battery cell 20, and the electrical compartment includes a high-voltage structure. The first electrical connector 50 is electrically connected to the battery cell 20, and the second electrical connector 60 is electrically connected to the high-voltage structure.

[0213] The box body 10 serves as the base body 40 and is provided with a second fastener 80 .

[0214] The insulating post 30 includes an insulating post body 31, a first locking member 32, and a second locking member 33. The insulating post body 31 is symmetrically arranged about a first plane S and has a first end surface 311 and a second end surface 312 axially opposed to each other. The first locking member 32 is partially embedded in the insulating post body 31 and protrudes from the first end surface 311. The second locking member 33 is partially embedded in the insulating post body 31 and protrudes from the second end surface 312.

[0215] The first locking member 32 is a first nut, and the second locking member 33 is a second nut. The first locking member 32 and the second locking member 33 are symmetrically arranged with respect to the first plane S.

[0216] The first fastening member 70 is a first screw, and the second fastening member 80 is a second screw.

[0217] When connecting the first electrical connector 50 and the second electrical connector 60 to the box body 10, the insulating column 30 is first installed on the box body 10 through the threaded connection between the second locking member 33 and the second fastener 80, and then the first fastener 70 is passed through the first electrical connector 50 and the second electrical connector 60 in sequence and threadedly connected to the first locking member 32 to achieve the locking of the first electrical connector 50 and the second electrical connector 60 on the insulating column 30.

[0218] By providing the first locking member 32 protruding from the first end surface 311 of the insulating column body 31, the first electrical connector 50 and the second electrical connector 60 can directly contact the first locking member 32 during installation, resulting in a more stable connection. This also reduces contact between the first and second electrical connectors 50, 60 and the insulating column body 31, thereby reducing loose connections caused by contact with the insulating column body 31 and improving the reliability of the battery device 100. By providing the second locking member 33 protruding from the second end surface 312 of the insulating column body 31, when the insulating column 30 is installed on the base 40, the base 40 can directly contact the second locking member 33, resulting in a more stable connection.

[0219] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the various embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: include: matrix; a first electrical connector; a second electrical connector; a first fastener; as well as An insulating column comprising an insulating column body and a first locking member, wherein the insulating column body is disposed on the base, and the first locking member is partially embedded in the insulating column body; the first fastener and the first locking member are connected to lock the first electrical connector and the second electrical connector to the insulating column; The insulating column body has a first end surface in its axial direction, and the first locking member protrudes from the first end surface.

2. The battery device according to claim 1, wherein: The length of the first locking member protruding from the first end surface is 0.01 mm to 3 mm.

3. The battery device according to claim 2, characterized in that The length of the first locking member protruding from the first end surface is 0.05 mm to 3 mm.

4. The battery device according to claim 1, wherein: The battery device further includes a second fastener, which is disposed on the base; The insulating column further includes a second locking piece, which is embedded in the insulating column body, and the second fastener is cooperatively connected with the second locking piece.

5. The battery device according to claim 4, characterized in that The second locking member is partially embedded in the insulating column body; The insulating column body further has a second end surface in the axial direction, and the second locking member protrudes from the second end surface.

6. The battery device according to claim 5, characterized in that The length of the second locking member protruding from the second end surface is 0.01 mm to 3 mm.

7. The battery device according to claim 6, characterized in that The length of the second locking member protruding from the second end surface is 0.05 mm to 3 mm.

8. The battery device according to claim 4, wherein: The outer peripheral surface of the first locking member is provided with knurled stripes; and / or, The outer peripheral surface of the second locking member is provided with knurled stripes.

9. The battery device according to claim 5, characterized in that The outer circumferential surface of the first locking member is provided with a first flange and a second flange, the first flange is closer to the first end face than the second flange, the outer circumferential radius of the first flange is larger than the outer circumferential radius of the second flange, and the surface of the second flange is formed with knurled stripes; and / or, The outer wall of the second locking component is provided with a third flange and a fourth flange. The third flange is closer to the second end face than the fourth flange. The outer radius of the third flange is larger than the outer radius of the fourth flange. The surface of the fourth flange is formed with knurled stripes.

10. The battery device according to claim 4, characterized in that The insulating column body is symmetrically arranged about a first plane, and the first plane is perpendicular to the axial direction of the insulating column body.

11. The battery device according to claim 10, characterized in that The first locking component and the second locking component are symmetrically arranged with respect to the first plane.

12. The battery device according to claim 10, wherein: A fifth flange is provided on the outer peripheral surface of the insulating column body, and the cross section of the fifth flange is a regular polygon.

13. The battery device according to claim 12, wherein: There are two fifth flanges, and the two fifth flanges are symmetrically arranged with respect to the first plane.

14. The battery device according to claim 12, wherein: The cross section of the insulating column body is circular; The minimum distance between the outer circumferential surface of the fifth flange and the central axis of the insulating column body is not less than the radius of the insulating column body.

15. The battery device according to claim 12, wherein: The cross section of the insulating column body is circular; The maximum distance between the outer circumferential surface of the fifth flange and the central axis of the insulating column body is not greater than the radius of the insulating column body.

16. The battery device according to claim 10, characterized in that The insulating column body is in a prismatic shape.

17. The battery device according to claim 4, characterized in that The first locking member is a first nut, and the first fastening member is a first bolt; The second locking member is a second nut, and the second fastening member is a second bolt.

18. The battery device according to claim 4, characterized in that The first locking member is a first bolt, the first fastening member is a first nut, the second locking member is a second nut, and the second fastening member is a second bolt; or The first locking member is a first nut, the first fastening member is a first bolt, the second locking member is a second bolt, and the second fastening member is a second nut.

19. The battery device according to any one of claims 1 to 18, characterized in that: The insulating column body is an injection molded part.

20. The battery device according to any one of claims 1 to 18, characterized in that: The battery device includes a box body and a battery cell. The box body is provided with a battery compartment and an electrical compartment. The battery compartment is used to accommodate the battery cell. The electrical compartment is provided with a high-voltage structure. The base is arranged in the electrical compartment.

21. The battery device according to claim 20, characterized in that The electrical compartment is provided with a high-voltage box, and the base is the shell of the high-voltage box.

22. The battery device according to claim 20, characterized in that The first electrical connector is electrically connected to the battery cell, and the second electrical connector is electrically connected to the high-voltage structure.

23. The battery device according to any one of claims 1 to 18, characterized in that: The battery device includes a box body and a battery cell. The battery cell is accommodated in the box body, and the base body is the box body.

24. An electrical device, characterized in that: A battery device comprising the battery device according to any one of claims 1 to 23.

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