A battery device and an electric device

Abstract

The application discloses a battery device and an electric device, wherein the battery device comprises a battery cell, at least two conductive pieces and an adapter assembly. The conductive pieces are electrically connected to the battery cell. The adapter assembly comprises a main body, at least two adapter bodies and a fixing body. The adapter bodies are connected to the main body. The adapter bodies have connecting surfaces for connecting the conductive pieces. The connecting surfaces are electrically connected to the conductive pieces. The planes where the connecting surfaces of the at least two adapter bodies are located intersect. The fixing body is connected to the main body. The fixing body has an insulating part. The main body is fixed to a target position through the fixing body. The technical scheme provided by the application can improve the flexibility and reliability of the adapter of the conductive pieces.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery device and an electrical device. Background Technology

[0002] As the energy storage system of new energy vehicles, the battery device requires conductive components to connect current. To ensure the energy density of the battery device, the space reserved inside for the connection of conductive components is limited. In related technologies, the flexibility and reliability of the connection methods between conductive components are poor, failing to meet the application requirements of battery devices. Summary of the Invention

[0003] This application provides a battery device and an electrical device that can improve the flexibility and reliability of conductive component switching.

[0004] This application provides a battery device, which includes a battery cell, a conductive element, and an adapter assembly. The conductive element is at least two and is electrically connected to the battery cell. The adapter assembly includes a main body, an adapter body, and a fixing body. The adapter body is at least two and is connected to the main body. The adapter body has a connecting surface that is electrically connected to the conductive element. The planes containing the connecting surfaces of at least two adapter bodies intersect. The fixing body is connected to the main body and has an insulating portion. The main body is insulated and fixed to a target location through the fixing body.

[0005] The technical solution provided in this application includes a battery device comprising a battery cell, conductive components, and a connecting assembly. The battery cell, as the basic building block of the battery device, provides electrical energy to an external circuit. At least two conductive components are electrically connected to the battery cell, connecting the internal circuitry of the battery device to enable its normal operation. The connecting assembly includes a main body, a connecting body, and a fixing body. Each connecting body has a connecting surface for connecting the conductive components. At least two connecting bodies are present, connected via the main body. The planes containing the connecting surfaces of at least two connecting bodies intersect; that is, the planes containing the connecting surfaces of at least two connecting bodies are not parallel. In this way, on the one hand, the intersecting planes of the connection surfaces of at least two adapters allow the connection surfaces of different adapters to be set at an angle. These angled connection surfaces can connect to different conductive components, enabling steering between conductive components. This allows the conductive components to achieve large-angle steering without bending or twisting, or with only small-angle bending or twisting. On the other hand, the angled connection surfaces, when connected to conductive components, can provide support at different angles, helping to improve the stability of the connection between the adapter and the conductive component. The fixing body is connected to the main body and has an insulating part for insulated fixation to the target position. In this way, on the one hand, the fixing body provides support to the main body, which can be transferred to the conductive components through the adapters to overcome bending or sagging of the conductive components under their own weight or external forces, improving the stability of long-span arrangements of the conductive components. On the other hand, the main body can adjust its position through the fixing body, improving the flexibility of the adapter assembly arrangement. Furthermore, during the application of the adapter assembly, the heat generated by the current passing through the main body can be dissipated through the fixing body, helping to improve the heat dissipation efficiency of the adapter assembly.

[0006] In some embodiments of this application, the planes containing the connecting surfaces of at least two adapters are perpendicular to each other.

[0007] In some embodiments of this application, the main body extends along a first plane, and the plane containing the connecting surface of at least one adapter intersects the first plane.

[0008] In some embodiments of this application, the adapter includes at least a first adapter and a second adapter. The plane on which the connecting surface of the first adapter is located is a second plane, and the plane on which the connecting surface of the second adapter is located is a third plane. The second plane and the third plane intersect, and the first plane intersects at least with either the second plane or the third plane.

[0009] In some embodiments of this application, the first plane, the second plane, and the third plane are perpendicular to each other.

[0010] In some embodiments of this application, the first plane is perpendicular to the second plane, and the first plane is parallel to the third plane.

[0011] In some embodiments of this application, the main body has a first connecting side and a second connecting side, a first adapter is connected to the first connecting side, a second adapter is connected to the second connecting side, and the angle between the first connecting side and the second connecting side is less than or equal to the angle between the second plane and the third plane.

[0012] In some embodiments of this application, the material of the connecting surface of the first adapter is different from the material of the connecting surface of the second adapter.

[0013] In some embodiments of this application, the material of the first adapter is different from that of the second adapter, and one of the first adapter and the second adapter is made of the same material as the main body.

[0014] In some embodiments of this application, the material of the first adapter is the same as that of the main body, the first adapter is integrally connected to the main body, and the second adapter is separately connected to the main body.

[0015] In some embodiments of this application, the main body extends along a first plane, and the extension direction of the fixing body is perpendicular to the first plane.

[0016] In some embodiments of this application, one end of the fixing body is connected to the main body, and the insulating part is located at the other end of the fixing body.

[0017] In some embodiments of this application, the fixing body is connected to the main body by fasteners; or, the fixing body also has a welding part connected to the insulating part, and the welding part is welded to the main body.

[0018] In some embodiments of this application, each adapter includes an adapter block and a connecting surface disposed on at least one side of the adapter block, and each adapter is connected to the main body through the adapter block.

[0019] In some embodiments of this application, the extension direction of the adapter block is parallel to the plane containing the connecting surface.

[0020] In some embodiments of this application, the extension direction of the adapter block is perpendicular to the extension direction of the main body, and along the extension direction of the adapter block, the side of the main body facing the adapter block is connected to the end of the adapter block. In some embodiments of this application, the adapter block has a first end and a second end disposed opposite to each other, and at least one arcuate segment is formed between the first end and the second end, and one of the first end and the second end is connected to the main body.

[0021] In some embodiments of this application, the extension direction of the adapter block is perpendicular to the extension direction of the main body. Along the extension direction of the main body, the side of the adapter block facing the main body is connected to the main body, and the side of the adapter block facing away from the main body forms a connecting surface. Along the extension direction of the adapter block, the opposite sides of the adapter block protrude from the corresponding sides of the main body.

[0022] In some embodiments of this application, the adapter block includes a first segment, a second segment, and a third segment. The first segment is connected to the main body, the connecting surface is formed in the second segment, the third segment is a bent segment, and one end of the third segment is connected to the first segment, while the other end of the third segment is connected to the second segment.

[0023] In some embodiments of this application, the main body includes a connecting part, and the adapter is connected to the main body through the connecting part.

[0024] In some embodiments of this application, the extending direction of the connecting part is perpendicular to the extending direction of the fixing body, and along the extending direction of the connecting part, the end of the connecting part facing away from the fixing body is connected to the adapter body.

[0025] In some embodiments of this application, the battery device further includes a housing and a fixed bracket disposed within the housing. The fixed bracket is located at a target position, and a target distance is formed between the fixed bracket and the inner wall of the housing. The main body is insulated and fixed to the fixed bracket.

[0026] A second aspect of this application provides an electrical device, including an electrical appliance and a battery device according to the first aspect, wherein the battery device is electrically connected to the electrical appliance.

[0027] In the technical solution of this application embodiment, since the electrical device includes the battery device of the first aspect, it has the same technical effect. That is, it can improve the flexibility and reliability of conductive component switching. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0029] Figure 1 A schematic diagram of the connection between the adapter component and the conductive element provided in an embodiment of this application (first example);

[0030] Figure 2 A schematic diagram of the connection between the adapter component and the conductive element provided in the embodiment of this application (second example);

[0031] Figure 3 A schematic diagram of the connection between the adapter component and the conductive element provided in the embodiments of this application (third example);

[0032] Figure 4 A schematic diagram of the connection between the adapter component and the conductive element provided in the embodiments of this application (fourth example);

[0033] Figure 5A schematic diagram of the connection between the adapter component and the conductive element provided in the embodiments of this application (fifth example);

[0034] Figure 6 A schematic diagram of the connection between the adapter component and the conductive element provided in the embodiments of this application (sixth example);

[0035] Figure 7 A schematic diagram of the structure of the adapter block on the adapter assembly provided in this application embodiment (first example);

[0036] Figure 8 A schematic diagram of the structure of the adapter block on the adapter assembly provided in this application embodiment (second example);

[0037] Figure 9 A schematic diagram of the structure of the adapter block on the adapter assembly provided in this application embodiment (third example);

[0038] Figure 10 A schematic diagram of the structure of the adapter block on the adapter assembly provided in this application embodiment (fourth example);

[0039] Figure 11 A schematic diagram of the structure of the adapter block on the adapter assembly provided in this application embodiment (fifth example);

[0040] Figure 12 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application;

[0041] Figure 13 for Figure 10 Enlarged view of point A in the middle.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1-Box; 2-Adapter assembly; 21-Main body; 211-First plane; 212-Connecting part; 22-Adapter body; 22a-First adapter body; 22a1-Second plane; 22b-Second adapter body; 22b1-Third plane; 221-Adapter block; 2211-Connecting surface; 2212-Arc segment; 2213-First segment; 2214-Second segment; 2215-Third segment; 23-Fixing body; 231-Insulating part; 232-Welding part; 3-Conductive component; 3a-First conductive component; 3b-Second conductive component; 4-Fastener; 5-Fixing bracket. Detailed Implementation

[0044] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0046] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0047] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0048] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0049] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0050] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0051] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0052] The following is a detailed description of this application.

[0053] In the embodiments of this application, for ease of description, reference is made to... Figures 7 to 11 The directions are indicated, with the first direction being the extension direction of the main body 21 and the second direction being the extension direction of the fixed body 23. It should be noted that the direction markings are only used to describe this application and are not intended to limit the scope of this application.

[0054] Battery devices are increasingly used in daily life and industry. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. As the application areas of battery devices continue to expand, the market demand is also constantly increasing.

[0055] As the energy storage system of new energy vehicles, the battery device requires conductive components to connect current. To ensure the energy density of the battery device, the space reserved for conductive components within the device is limited. In related technologies, due to the limited internal space, battery cells may be arranged irregularly. To adapt to this spatial layout, large-angle transitions between battery cells or between battery cells and other modules (such as thermal management modules, battery management modules, etc.) are required via conductive components. In related technologies, the conductive components need to possess high flexibility to adapt to large transition angles through bending or twisting. However, this flexible design reduces the mechanical strength of the conductive components. This leads to decreased resistance to vibration and impact, uneven stress distribution, and ultimately affects their reliability. Furthermore, highly flexible conductive components require high installation precision, limiting their application due to space constraints and thus impacting their flexibility.

[0056] To solve the above problems, refer to Figure 1 , Figure 4 and Figure 12 This application provides a battery device, which includes a battery cell, a conductive element 3, and an adapter assembly 2. There are at least two conductive elements 3, which are electrically connected to the battery cell. The adapter assembly 2 includes a main body 21, an adapter body 22, and a fixing body 23. There are at least two adapter bodies 22, which are connected to the main body 21. The adapter body 22 has a connecting surface 2211, which is electrically connected to the conductive element 3. The planes containing the connecting surfaces 2211 of at least two adapter bodies 22 intersect. The fixing body 23 is connected to the main body 21 and has an insulating part 231 for insulating and fixing to a target position.

[0057] In this embodiment, the battery cell can be a rechargeable battery, which refers to a battery cell that can be recharged after discharge to activate the active materials and continue to be used. The battery cell can also be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this embodiment is not limited to these types.

[0058] In this embodiment, each adapter 22 is interconnected by a main body 21. The structural design of the main body 21 has many possibilities. For example, the main body 21 can be a block structure, a plate structure, or a rod structure. This embodiment does not limit this.

[0059] In this embodiment, the structural design of the adapter 22 can be varied. For example, the adapter 22 can be a block structure, a plate structure, or a rod structure. This embodiment does not limit the design of the adapter.

[0060] In this embodiment, the connection between the main body 21 and the adapter 22 can be varied. For example, the main body 21 can be integrally connected to the adapter 22 or separately connected to the adapter 22. This embodiment does not limit this.

[0061] In this embodiment, the connecting surface 2211 on the adapter 22 is used to connect with the conductive element 3. Therefore, the structural form of the connecting surface 2211 can be various. For example, the connecting surface 2211 can be a plane or an arc surface. This embodiment does not limit this.

[0062] In this embodiment of the application, the connection method between the connecting surface 2211 on the adapter 22 and the conductive element 3 can be varied. For example, referring to... Figure 1 , Figure 2 and Figure 3 The connecting surface 2211 on the adapter 22 and the conductive component 3 can be connected by fasteners 4; or, refer to Figure 4 , Figure 5 and Figure 6 The connecting surface 2211 on the adapter 22 and the conductive component 3 can be connected by welding, but this application embodiment does not limit this.

[0063] In this embodiment, the conductive element 3 can have various structural forms. For example, the conductive element 3 can be a flexible connector, which is an electrical connector made of flexible materials (such as copper foil, aluminum foil, composite flexible materials, etc.). Alternatively, the conductive element 3 can also be a rigid connector, which is an electrical connector made of rigid materials (such as copper busbar, aluminum busbar, etc.). This embodiment does not limit the type of connector.

[0064] In this embodiment, when the adapter 22 is connected to the conductive element 3, the adapter 22 needs to carry the same or greater current as the conductive element 3. Therefore, the thickness of the adapter 22 can be greater than the thickness of the conductive element 3, and the area of ​​the connecting surface 2211 on the adapter 22 can be greater than the area of ​​the connecting surface on the conductive element 3. This increases the cross-sectional area of ​​the adapter 22. A larger cross-sectional area reduces resistance, decreases heat generation, and avoids overheating damage, thereby improving the safety of the adapter assembly 2.

[0065] In the technical solution provided in this application embodiment, the battery device includes a battery cell, a conductive element 3, and a connecting assembly 2. The battery cell, as the basic building block of the battery device, provides electrical energy to an external circuit. There are at least two conductive elements 3, electrically connected to the battery cell, which connect the internal circuit of the battery device to enable its normal operation. The connecting assembly 2 includes a main body 21, a connecting body 22, and a fixing body 23. The connecting body 22 has a connecting surface 2211 for connecting the conductive element 3. There are at least two connecting bodies 22, each connected via the main body 21. The planes containing the connecting surfaces 2211 of at least two connecting bodies 22 intersect; that is, the planes containing the connecting surfaces 2211 of at least two connecting bodies 22 are not parallel. In this way, on the one hand, since the planes containing the connecting surfaces 2211 of at least two adapter bodies 22 intersect, the connecting surfaces 2211 of different adapter bodies 22 can be set at an angle. The angled connecting surfaces 2211 can be connected to different conductive elements 3 respectively, so as to realize the turning between conductive elements 3, allowing the conductive elements 3 to achieve large-angle turning without bending or twisting or with only small-angle bending or twisting. On the other hand, when the angled connecting surfaces 2211 are connected to the conductive elements 3, they can provide support for the conductive elements 3 at different angles, which helps to improve the stability of the connection between the adapter body 22 and the conductive elements 3. The fixing body 23 is connected to the main body 21, and the fixing body 23 has an insulating part 231 to insulate and fix it to the target position. In this way, on the one hand, the fixing body 23 can provide support for the main body 21, and this support can be transferred to the conductive component 3 through the adapter 22 to overcome the bending or sagging of the conductive component 3 under its own weight or external force, thereby improving the stability of the long-span arrangement of the conductive component 3; on the other hand, the main body 21 can adjust its own position through the fixing body 23 to improve the flexibility of the arrangement of the adapter assembly 2. In addition, during the application of the adapter assembly 2, the heat generated by the current passing through the main body 21 can also be dissipated through the fixing body 23, which helps to improve the heat dissipation efficiency of the adapter assembly 2.

[0066] Compared to related technologies where large-angle transitions mainly rely on the bending or twisting of a single conductive element 3, the battery device provided in this application includes a transition assembly 2. This assembly 2 includes a main body 21 and a transition body 22. The transition body 22 has a connecting surface 2211 for connecting the conductive element 3, and there are at least two transition bodies 22. Each transition body 22 is connected via the main body 21, and the planes containing the connecting surfaces 2211 of each transition body 22 are angled. During large-angle transitions, the angled connecting surfaces 2211 on each transition body 22 can connect to different conductive elements 3, allowing the conductive elements 3 to be connected at an angle. This changes the extension direction of the free ends of the conductive elements 3, enabling the free ends of the angled conductive elements 3 to be electrically connected to a target object in the corresponding orientation. This achieves large-angle transitions between individual battery cells or between individual battery cells and other modules (such as thermal management modules, battery management modules, etc.). In this embodiment, the spatial turning of the free end of the conductive element 3 is mainly achieved by the angled connecting surfaces 2211, reducing the need for bending or twisting of the conductive element 3 itself. This allows the conductive element 3 to achieve large-angle turning even without bending or twisting, or with only small-angle bending or twisting. This reduces the flexibility requirement of the conductive element 3, allowing its reliability to be improved by increasing its mechanical strength. Furthermore, the fact that the conductive element 3 does not bend or twist, or with only small-angle bending or twisting, also improves the stress distribution on the conductive element 3, thereby improving its reliability. In addition, in this embodiment, large-angle transitions are mainly achieved by connecting the conductive elements 3 at an angle using the transition assembly 2. This reduces the length of a single conductive element 3 within a fixed transition distance, allowing the conductive element 3 to better adapt to complex spatial layouts, improving installation flexibility, and thus increasing space utilization.

[0067] In this embodiment of the application, the free end of the conductive element 3 refers to the end of the conductive element that is not fixed or constrained, that is, the end of the conductive element 3 facing away from the connection surface 2211. This free end can move freely within a specific range to be electrically connected to the target object in the corresponding orientation.

[0068] In this embodiment, the angle between the planes containing the connecting surfaces 2211 of at least two adapter bodies 22 can be varied. For example, the angle between the planes containing the connecting surfaces 2211 of at least two adapter bodies 22 can be 30°, 45°, or 60°; this embodiment does not limit this. (Refer to...) Figure 1 , Figure 2 and Figure 3In one possible embodiment of this application, the planes containing the connecting surfaces 2211 of at least two adapters 22 are perpendicular to each other. This allows for the connection between conductive components 3 with mutually perpendicular extension directions; furthermore, the perpendicularly arranged connecting surfaces 2211 facilitate the formation of a uniform electric field, reducing current accumulation caused by edge effects and thus reducing energy loss during current transmission.

[0069] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 In this embodiment, the main body 21 extends along the first plane 211, and the plane containing the connecting surface 2211 of at least one adapter 22 intersects the first plane 211. That is, the plane containing the connecting surface 2211 of at least one adapter 22 is set at an angle to the first plane 211. In this way, the adapter 22 can be set at an angle to the main body 21, thereby optimizing the spatial layout of the main body 21 and the adapter 22, which helps to reduce the space occupied by the main body 21 and the adapter 22.

[0070] In this embodiment, the number of adapters 22 can be varied. For example, there can be two, three, or five adapters 22, and this embodiment does not limit the number.

[0071] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment, the adapter 22 includes at least a first adapter 22a and a second adapter 22b. The plane containing the connecting surface 2211 of the first adapter 22a is the second plane 22a1, and the plane containing the connecting surface 2211 of the second adapter 22b is the third plane 22b1. The second plane 22a1 and the third plane 22b1 intersect, and the first plane 211 intersects at least with either the second plane 22a1 or the third plane 22b1. Thus, the second plane 22a1 and the third plane 22b1 are angled together, and the first plane 211 is angled with either the second plane 22a1 or the third plane 22b1. This optimizes the layout of the main body 21, the first adapter 22a, and the second adapter 22b in three-dimensional space, reducing the space occupied by the main body 21, the first adapter 22a, and the second adapter 22b.

[0072] In this embodiment of the application, the angle between the second plane 22a1 and the third plane 22b1 can be various. For example, the angle between the second plane 22a1 and the third plane 22b1 can be 30°, 45°, or 60°. This embodiment of the application does not limit this.

[0073] In this embodiment, the first plane 211 can be angled to the second plane 22a1. For example, the angle between the first plane 211 and the second plane 22a1 can be 30°, 60°, or 90°, and this embodiment does not limit this. Simultaneously, the first plane 211 can be coplanar with the third plane 22b1. This increases the area of ​​the connecting surface 2211 on the second adapter 22b, thereby increasing the current flow area. Furthermore, increasing the area of ​​the connecting surface 2211 on the second adapter 22b increases the contact area between the conductive element 3 and the second adapter 22b, reducing the risk of poor contact due to vibration, impact, or thermal expansion and contraction.

[0074] In this embodiment, the first plane 211 may also be angled to the third plane 22b1. For example, the angle between the first plane 211 and the third plane 22b1 may be 30°, 60°, or 90°, and this embodiment does not impose any limitation on this. Simultaneously, the first plane 211 may be coplanar with the second plane 22a1. This increases the area of ​​the connecting surface 2211 of the first adapter 22a, thereby increasing the current flow area. Furthermore, increasing the area of ​​the connecting surface 2211 of the first adapter 22a increases the contact area between the conductive element 3 and the first adapter 22a, reducing the risk of poor contact due to vibration, impact, or thermal expansion and contraction.

[0075] Reference Figure 2 and Figure 5 In one possible embodiment of this application, the first plane 211, the second plane 22a1, and the third plane 22b1 are mutually perpendicular. This allows the first adapter 22a and the second adapter 22b to achieve a connection between two mutually perpendicular conductive elements 3. Furthermore, the mutual perpendicularity of the first plane 211, the second plane 22a1, and the third plane 22b1 allows the main body 21, the first adapter 22a, and the second adapter 22b to effectively utilize three-dimensional space, reducing the space occupied by the adapter assembly 2.

[0076] Reference Figure 1 and Figure 4 In another possible embodiment of this application, the first plane 211 is perpendicular to the second plane 22a1, and the first plane 211 is parallel to the third plane 22b1. Thus, the connecting surface 2211 of the first adapter 22a is perpendicular to the connecting surface 2211 of the second adapter 22b, and the connecting surfaces 2211 of the first adapter 22a and the second adapter 22b are in different dimensions, enabling the first adapter 22a and the second adapter 22b to achieve a connection between two mutually perpendicular conductive components 3 with different dimensions.

[0077] In this embodiment, the first adapter 22a and the second adapter 22b can be connected to the same side of the main body 21 or to different sides of the main body 21; this embodiment does not impose any limitations on this. In one possible embodiment, the main body 21 has a first connecting side and a second connecting side. The first adapter 22a is connected to the first connecting side, and the second adapter 22b is connected to the second connecting side. The angle between the orientation of the first connecting side and the orientation of the second connecting side is less than or equal to the angle between the second plane and the third plane. Here, by connecting the main body 21 to the first adapter 22a and the second adapter 22b through different sides, the orientation of the connecting surfaces 2211 on the first adapter 22a and the second adapter 22b can be changed. In this way, the first adapter 22a and the second adapter 22b do not need to be bent or twisted, or only need to be bent or twisted at a small angle, so that the angle between the connecting surfaces 2211 on the first adapter 22a and the second adapter 22b meets the setting requirements. This helps to improve the stress distribution between the adapter 22 and the main body 21, thereby improving the reliability of the adapter assembly 2.

[0078] In this embodiment, the angle between the first connecting side orientation and the second connecting side orientation can be less than the angle between the second plane and the third plane; or, the angle between the first connecting side orientation and the second connecting side orientation can be equal to the angle between the second plane and the third plane. In this case, the side of the first adapter 22a facing away from the first connecting side can form a connecting surface 2211, and the side of the second adapter 22b facing away from the second connecting side can form a connecting surface 2211.

[0079] In this embodiment, the material of the connecting surface 2211 of the first adapter 22a can be the same as or different from the material of the connecting surface 2211 of the second adapter 22b; this embodiment does not impose any limitations on this. In one possible embodiment, the material of the connecting surface 2211 of the first adapter 22a is different from the material of the connecting surface 2211 of the second adapter 22b. In this way, the adapter assembly 2 can achieve the connection of conductive components 3 made of different materials. For example, the material of the connecting surface 2211 of the first adapter 22a can be aluminum, and the material of the connecting surface 2211 of the second adapter 22b can be copper. One of the two conductive components 3 can be made of aluminum, and the other can be made of copper. The first adapter 22a and the second adapter 22b are electrically connected to the conductive component 3 of the same material. This avoids electrochemical corrosion caused by direct contact between different materials, improving the reliability of the electrical connection between the adapter 22 and the conductive component 3. Furthermore, the fact that the connecting surface 2211 of the adapter 22 and the conductive component 3 are made of the same material ensures consistent conductivity, guaranteeing stable and efficient current transmission. Additionally, the identical material of the connecting surface 2211 of the adapter 22 and the conductive component 3 ensures that their coefficients of thermal expansion are consistent, reducing stress caused by temperature changes and preventing loosening or damage to the connection.

[0080] In this embodiment, the material of the connecting surface 2211 on the first adapter 22a can be the same as the material of other parts of the first adapter 22a. For example, the material of the first adapter 22a can be copper. This allows the first adapter 22a to have consistent conductivity, thereby improving the stability and efficiency of current transmission. It also allows the first adapter 22a to have uniform mechanical properties, thereby improving the reliability of the connection between the first adapter 22a and the conductive component 3. Alternatively, the material of the connecting surface 2211 on the first adapter 22a can be different from the material of other parts of the first adapter 22a. For example, the connecting surface 2211 on the first adapter 22a can be copper-plated, while the material of other parts of the first adapter 22a is aluminum. This reduces the weight of the first adapter 22a while improving its conductivity, and also reduces the production cost of the first adapter 22a.

[0081] In this embodiment, the material of the connecting surface 2211 on the second adapter 22b can be the same as the material of other parts of the second adapter 22b. For example, the material of the second adapter 22b can be aluminum. This ensures that the second adapter 22b has consistent conductivity, thereby improving the stability and efficiency of current transmission. Furthermore, it allows the second adapter 22b to have uniform mechanical properties, thereby improving the reliability of the connection between the second adapter 22b and the conductive component 3. Alternatively, the material of the connecting surface 2211 on the second adapter 22b can be different from the material of other parts of the second adapter 22b. For example, the connecting surface 2211 on the second adapter 22b can be silver-plated, while the material of other parts of the second adapter 22b is copper. This improves the corrosion resistance and conductivity of the second adapter 22b.

[0082] In this embodiment, the material of the main body 21 can be selected in various ways. For example, the material of the main body 21 can be the same as that of the first adapter 22a; or the material of the main body 21 can be the same as that of the second adapter 22b; or the materials of the main body 21, the first adapter 22a and the second adapter 22b are all different.

[0083] In one possible embodiment of this application, the material of the first adapter 22a is different from that of the second adapter 22b, and one of the first adapter 22a and the second adapter 22b is made of the same material as the main body 21. Here, the different materials of the first adapter 22a and the second adapter 22b allow for the connection of conductive components 3 made of different materials. The fact that one of the first adapter 22a and the second adapter 22b is made of the same material as the main body 21 allows for unified processing of the main body 21 and the adapter 22 of the same material during the fabrication of the adapter assembly 2, thereby reducing processing costs.

[0084] In one possible embodiment of this application, the first adapter 22a is made of the same material as the main body 21, and the first adapter 22a is integrally connected to the main body 21, while the second adapter 22b is separately connected to the main body 21. Here, the first adapter 22a is made of the same material as the main body 21, and is integrally connected to the main body 21. On the one hand, this allows the first adapter and the main body 21 to be integrally processed from the same material to form an inseparable whole, improving the connection reliability between the first adapter 22a and the main body 21. On the other hand, the absence of additional contact surfaces between the first adapter 22a and the main body 21 reduces contact resistance and improves the stability of current transmission. The second adapter 22b is separately connected to the main body 21. On the one hand, different materials, specifications, or functions of the second adapter 22b can be replaced according to application requirements to adapt to different application scenarios, improving the design flexibility of the adapter assembly 2. On the other hand, it allows for separate testing of the performance of the second adapter 22b and the main body 21, improving quality control. Furthermore, in the event of damage to the second adapter 22b, the second adapter 22b can be replaced separately, reducing maintenance costs.

[0085] In this embodiment of the application, when the material of the main body 21 is different from that of the second adapter 22b, there are a variety of possible connection forms between the main body 21 and the second adapter 22b. For example, the main body 21 and the second adapter 22b can be connected by mortise and tenon joints, by pressing, or by riveting. This embodiment of the application does not limit this.

[0086] In this embodiment, the function of the fixing body 23 is to fix the main body 21 to the target position. Therefore, the structural design of the fixing body 23 has many possibilities. For example, the fixing body 23 can be a block structure, a plate structure, or a rod structure. This embodiment does not limit this.

[0087] In this embodiment, the relationship between the extending direction of the fixing body 23 and the first plane 211 can be varied. For example, the extending direction of the fixing body 23 can be set at a 60° angle to the first plane 211. (Refer to...) Figure 1 and Figure 7 In one possible embodiment of this application, the main body 21 extends along the first plane 211, and the extension direction of the fixing body 23 is perpendicular to the first plane 211. Here, the extension direction of the fixing body 23 is perpendicular to the extension direction of the main body 21, which allows the fixing body 23 to provide vertical support to the main body 21. The vertical support can effectively disperse external forces, reduce the bending or twisting of the main body 21, and thus improve the stability and durability of the adapter component 2 structure.

[0088] In this embodiment, the structural design of the fixing body 23 can be varied. For example, the fixing body 23 may only include the insulating part 231, that is, the fixing body 23 may be entirely made of insulating material, such as ceramic, rubber, or plastic. (Refer to...) Figure 4 , Figure 5 and Figure 6 In one possible embodiment of this application, one end of the fixing body 23 is connected to the main body 21, and the insulating part 231 is located at the other end of the fixing body 23. In this way, the end of the fixing body 23 connected to the main body 21 can be made of a material with higher mechanical strength (such as metal), which improves the reliability of the connection between the fixing body 23 and the main body 21; the insulating part 231 located at the end of the fixing body 23 facing away from the main body 21 can provide electrical insulation to prevent current leakage on the main body 21 and improve the safety of the adapter assembly 2.

[0089] In this embodiment of the application, the connection method between the main body 21 and the adapter 22 can be varied, for example, referring to... Figure 1 , Figure 2 and Figure 3 The fixing body 23 is connected to the main body 21 by fastener 4; or, refer to Figure 4 , Figure 5 and Figure 6 The fixing body 23 also has a welding part 232 that connects to the insulating part 231, and the welding part 232 is welded to the main body 21. Here, the fixing body 23 and the main body 21 are connected by fasteners 4, which facilitates the disassembly and replacement of the fixing body 23 and the main body 21, and improves the ease of maintenance of the adapter component 2. The fixing body 23 is welded to the main body 21 through the welding part 232, which can form a seamless structure between the fixing body 23 and the main body 21, thereby reducing stress concentration and improving the durability of the overall structure.

[0090] In this embodiment, the material of the welding part 232 can be steel, aluminum, copper, etc., and this embodiment does not limit the material. Furthermore, the connection method between the welding part 232 and the insulating part 231 can be varied. For example, the welding part 232 and the insulating part 231 can be connected by threads, by crimping, or by adhesive bonding, and this embodiment does not limit the material.

[0091] Reference Figure 1 and Figure 7In this embodiment, each adapter 22 includes an adapter block 221 and a connecting surface 2211 disposed on at least one side of the adapter block 221. Each adapter 22 is connected to the main body 21 through the adapter block 221. Here, the adapter 22 includes the adapter block 221, and the connecting surface 2211 is formed by at least one side of the adapter block 221. On the one hand, the adapter block 221 has high mechanical strength and can withstand large loads and stresses, which helps to improve the connection reliability between the adapter 22 and the conductive element 3. On the other hand, the adapter block 221 can provide a larger area for the connecting surface 2211, thereby reducing the contact resistance between the connecting surface 2211 and the conductive element 3, and improving the current transmission efficiency.

[0092] In this embodiment of the application, the number of connecting surfaces 2211 on the adapter block 221 can be various. For example, the number of connecting surfaces 2211 on the adapter block 221 can be one, that is, a connecting surface 2211 is formed on one side of the adapter block 221; or, the number of connecting surfaces 2211 on the adapter block 221 can be two, that is, two connecting surfaces 2211 are formed on each side of the adapter block 221. This embodiment of the application does not limit this.

[0093] In this embodiment, when the number of connecting surfaces 2211 on a single adapter block 221 is two or more, the adapter block 221 provides more options for connecting the conductive element 3, facilitating connection of the conductive element 3 in different directions or positions, and improving the flexibility of the adapter assembly 2 in use. Furthermore, even if one connecting surface 2211 on the adapter block 221 fails, the other connecting surfaces 2211 can still connect to the conductive element 3, improving the reliability of the adapter assembly 2 in use.

[0094] In this embodiment, the extension direction of the adapter block 221 can have multiple possibilities. For example, the extension direction of the adapter block 221 can be set at 90° with the plane where the connecting surface 2211 is located. (Refer to...) Figure 7 and Figure 8 In one possible embodiment of this application, the extension direction of the adapter block 221 is parallel to the plane containing the connecting surface 2211. This increases the area of ​​the connecting surface 2211 on the adapter block 221, thereby reducing the contact resistance between the connecting surface 2211 and the conductive element 3, and improving the current transmission efficiency.

[0095] Reference Figure 7In this embodiment, the extension direction of the adapter block 221 is perpendicular to the extension direction of the main body 21. Along the extension direction of the adapter block 221, the side of the main body 21 facing the adapter block 221 is connected to the end of the adapter block 221. Here, the extension direction of the adapter block 221 is perpendicular to the extension direction of the main body 21, which can reduce the space occupied by the adapter assembly 2 in the extension direction of the main body 21. Along the extension direction of the adapter block 221, the side of the main body 21 facing the adapter block 221 is connected to the end of the adapter block 221. In this way, the adapter block 221 can be set no higher than the main body 21 in the extension direction of the adapter block 221. On the one hand, this allows external forces to act more on the main body 21, reducing the direct impact of external forces on the adapter block 221 and improving the stability of the overall structure. On the other hand, it can reduce the overall height of the main body 21 and the adapter block 221 in the extension direction of the adapter block 221, which helps to optimize the space utilization of the adapter assembly 2.

[0096] Reference Figure 7 In this embodiment, the adapter block 221 and the fixing body 23 are located on the same side of the main body 21. Along the extension direction of the main body 21, a connecting surface 2211 is formed on the side of the adapter block 221 facing away from the fixing body 23. In this way, on the one hand, when the connecting surface 2211 is connected to the conductive component 3, the interference of the fixing body 23 can be reduced, providing more space for installation tools and operations, and improving the convenience of operation; on the other hand, the connecting surface 2211 is located on the side of the adapter block 221 facing away from the fixing body 23, which can reduce the probability of the connecting surface 2211 contacting the conductive part on the fixing body 23, helping to reduce the risk of accidental contact or short circuit, and improving the electrical safety of the adapter assembly 2.

[0097] Reference Figure 9 and Figure 10 In this embodiment, the adapter block 221 has a first end and a second end arranged opposite to each other, with at least one arc-shaped segment 2212 formed between the first end and the second end. One of the first end and the second end is connected to the main body 21. Thus, when arranging the adapter assembly 2, the arc-shaped segment 2212 on the adapter block 221 can avoid surrounding components, allowing the adapter block 221 to better adapt to limited space and improve the space utilization rate of the adapter block 221. In addition, the arc-shaped segment 2212 on the adapter block 221 can also buffer vibration, helping to reduce the impact at the connection between the adapter block 221 and the conductive component 3, thereby improving the reliability of the connection between the adapter block 221 and the conductive component 3.

[0098] In this embodiment of the application, when the adapter block 221 is connected to the main body 21, the adapter block 221 can be connected to the main body 21 through the first end or through the second end. This embodiment of the application does not limit this.

[0099] In this embodiment of the application, the number of arc segments 2212 on the adapter block 221 can be varied, for example, referring to Figure 9 The number of arc segments 2212 on the adapter block 221 can be one; or, refer to Figure 10 The number of arc segments 2212 on the adapter block 221 can also be two, and this application embodiment does not limit this.

[0100] Reference Figure 8 In this embodiment, the extension direction of the adapter block 221 is perpendicular to the extension direction of the main body 21. Along the extension direction of the main body 21, the side of the adapter block 221 facing the main body 21 is connected to the main body 21, and the side of the adapter block 221 facing away from the main body 21 forms a connecting surface 2211. Along the extension direction of the adapter block 221, the opposite sides of the adapter block 221 protrude from the corresponding sides of the main body 21. In this way, on the one hand, the area of ​​the connecting surface 2211 on the adapter block 221 can be increased, thereby reducing the contact resistance between the connecting surface 2211 and the conductive component 3, so as to improve the current transmission efficiency; on the other hand, when the connecting surface 2211 is connected to the conductive component 3, the interference of the main body 21 can be reduced, providing more space for installation tools and operation, and improving the convenience of operation.

[0101] Reference Figure 11 In this embodiment, the adapter block 221 includes a first segment 2213, a second segment 2214, and a third segment 2215. The first segment 2213 is connected to the main body 21, the connecting surface 2211 is formed on the second segment 2214, and the third segment 2215 is a bent segment, with one end of the third segment 2215 connected to the first segment 2213 and the other end connected to the second segment 2214. Thus, when arranging the adapter assembly 2, the second segment 2214 on the adapter block 221 can avoid surrounding components, allowing the adapter block 221 to better adapt to limited space and improve the space utilization rate of the adapter block 221.

[0102] In this embodiment, the connection between the adapter 22 and the main body 21 can be varied. For example, the adapter 22 and the main body 21 can be directly connected. (Refer to...) Figure 2 and Figure 5 In one possible embodiment of this application, the main body 21 includes a connecting portion 212, and the adapter 22 is connected to the main body 21 through the connecting portion 212. Here, the connecting portion 212 can provide additional support and fixation for the adapter 22, enhancing the reliability of the connection between the adapter 22 and the main body 21.

[0103] In this embodiment, the extending direction of the connecting portion 212 is perpendicular to the extending direction of the fixing body 23. Along the extending direction of the connecting portion 212, one end of the connecting portion 212 facing away from the fixing body 23 is connected to the adapter body 22. In this way, the distance between the fixing body 23 and the adapter body 22 can be increased along the extending direction of the connecting portion 212. On the one hand, the increased distance can increase the insulation path, reduce the possibility of the fixing body 23 being electrically broken down, and improve the electrical safety of the adapter assembly 2. On the other hand, the increased distance can increase the heat dissipation space, making it easier for heat to dissipate, preventing local overheating, and improving the heat dissipation efficiency of the adapter assembly 2.

[0104] Based on this, refer to Figure 12 and Figure 13 The battery device also includes a housing 1 and a fixed bracket 5 disposed inside the housing 1. The fixed bracket 5 is located at a target position, and a target distance is formed between the fixed bracket 5 and the inner wall of the housing 1. The main body 21 is connected to the fixed bracket 5. Here, the target distance between the fixed bracket 5 and the inner wall of the housing 1 can maintain a safe distance between the main body 21 and the inner wall of the housing 1, thereby improving the electrical safety of the adapter assembly 2.

[0105] In this embodiment, the main body 21 can be directly connected to the fixed bracket 5, or it can be connected to the fixed bracket 5 through the fixed body 23. This embodiment does not limit this.

[0106] In this embodiment of the application, when the main body is connected to the fixed bracket 5 via the fixed body 23, there are multiple possibilities for the connection between the fixed body 23 and the fixed bracket 5. For example, the fixed body 23 and the fixed bracket 5 can be connected by fasteners 4, by welding, or by snap-fit. This embodiment of the application does not limit this.

[0107] Reference Figure 12 and Figure 13 In this embodiment of the application, at least two conductive elements 3 include a first conductive element 3a and a second conductive element 3b. The extension direction of the first conductive element 3a and the extension direction of the second conductive element 3b are set at an angle. The first conductive element 3a and the second conductive element 3b are electrically connected through the adapter component 2.

[0108] In this embodiment, the battery device may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0109] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0110] In some embodiments, the battery device may be a battery pack, which includes a housing 1 and one or more individual battery cells housed within the housing 1. Alternatively, the individual battery cells may be battery modules, which can be housed within the housing 1 by securing the battery modules to the housing 1.

[0111] In some embodiments, the battery cell assembly may also be housed in the housing 1 by directly fixing multiple battery cells to the housing 1.

[0112] In some embodiments, the housing 1 may include a first housing and a second housing. The first housing and the second housing are fastened together to form a closed space inside the housing 1 to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing may be a top cover or a bottom plate.

[0113] In some embodiments, the housing 1 may also include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 1 forms a closed space to accommodate the battery cell assembly.

[0114] In some embodiments, the housing 1 may also be part of the vehicle's chassis structure. For example, the top cover of the housing 1 may be at least part of the vehicle's floor, or the frame of the housing 1 may be at least part of the vehicle's crossbeams and longitudinal beams.

[0115] In addition, this application embodiment also provides an electrical device, which includes an electrical appliance and a battery device, wherein the battery device is electrically connected to the electrical appliance.

[0116] In this embodiment, the electrical device can be, but is not limited to, a mobile phone, tablet, laptop, electric toy, power tool, electric vehicle, electric car, ship, spacecraft, etc. Electric toys can include stationary 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.

[0117] In this embodiment, the electrical device can be an electric vehicle, and the electrical appliances can be the drive motor, control components, vehicle air conditioner, vehicle entertainment system, etc. in the electric vehicle. The battery device can be located on the underside of the vehicle body.

[0118] The electrical device provided in this application embodiment includes the battery device of this application embodiment, and therefore also has the same technical effect. That is, it can improve the flexibility and reliability of the conductive component 3 connection.

[0119] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of the specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. A battery device, characterized in that, include: Battery cell; A conductive component, wherein at least two conductive components are separately provided, and the conductive components are electrically connected to the battery cell; An adapter assembly includes a main body, an adapter body, and a fixing body. There are at least two adapter bodies, each connected to the main body. Each adapter body has a connecting surface that is electrically connected to a conductive element. The planes containing the connecting surfaces of at least two adapter bodies intersect. The fixing body is connected to the main body and has an insulating portion. The main body is insulated and fixed to a target location through the fixing body.

2. The battery device according to claim 1, characterized in that, The planes containing the connecting surfaces of at least two of the adapters are perpendicular to each other.

3. The battery device according to claim 1, characterized in that, The main body extends along the first plane, and the plane containing the connecting surface of at least one of the adapters intersects with the first plane.

4. The battery device according to claim 3, characterized in that, The adapter includes at least a first adapter and a second adapter. The plane on which the connecting surface of the first adapter is located is a second plane, and the plane on which the connecting surface of the second adapter is located is a third plane. The second plane and the third plane intersect, and the first plane intersects at least with either the second plane or the third plane.

5. The battery device according to claim 4, characterized in that, The first plane, the second plane, and the third plane are perpendicular to each other.

6. The battery device according to claim 4, characterized in that, The first plane is perpendicular to the second plane, and the first plane is parallel to the third plane.

7. The battery device according to claim 4, characterized in that, The main body has a first connecting side and a second connecting side, the first adapter is connected to the first connecting side, the second adapter is connected to the second connecting side, and the angle between the orientation of the first connecting side and the orientation of the second connecting side is less than or equal to the angle between the second plane and the third plane.

8. The battery device according to claim 4, characterized in that, The material of the connecting surface of the first adapter is different from the material of the connecting surface of the second adapter.

9. The battery device according to claim 8, characterized in that, The material of the first adapter is different from that of the second adapter, and one of the first adapter and the second adapter is made of the same material as the main body.

10. The battery device according to claim 9, characterized in that, The first adapter is made of the same material as the main body, and the first adapter is integrally connected to the main body, while the second adapter is separately connected to the main body.

11. The battery device according to claim 1, characterized in that, The main body extends along the first plane, and the extension direction of the fixing body is perpendicular to the first plane.

12. The battery device according to claim 11, characterized in that, One end of the fixing body is connected to the main body, and the insulating part is located at the other end of the fixing body.

13. The battery device according to claim 11, characterized in that, The fixing body is connected to the main body by fasteners; or, the fixing body also has a welding part connected to the insulating part, and the welding part is welded to the main body.

14. The battery device according to any one of claims 1-13, characterized in that, Each of the adapters includes an adapter block and a connection surface disposed on at least one side of the adapter block, and each of the adapters is connected to the main body through the adapter block.

15. The battery device according to claim 14, characterized in that, The extension direction of the adapter block is parallel to the plane containing the connecting surface.

16. The battery device according to claim 14, characterized in that, The extension direction of the adapter block is perpendicular to the extension direction of the main body. Along the extension direction of the adapter block, the side of the main body facing the adapter block is connected to the end of the adapter block.

17. The battery device according to claim 14, characterized in that, The adapter block has a first end and a second end arranged opposite to each other, and at least one arc-shaped segment is formed between the first end and the second end. One of the first end and the second end is connected to the main body.

18. The battery device according to claim 14, characterized in that, The extension direction of the adapter block is perpendicular to the extension direction of the main body. Along the extension direction of the main body, the side of the adapter block facing the main body is connected to the main body, and the side of the adapter block facing away from the main body forms the connecting surface. Along the extension direction of the adapter block, the opposite sides of the adapter block protrude from the corresponding sides of the main body.

19. The battery device according to claim 14, characterized in that, The adapter block includes a first segment, a second segment, and a third segment. The first segment is connected to the main body, the connecting surface is formed in the second segment, the third segment is a bent segment, and one end of the third segment is connected to the first segment, while the other end of the third segment is connected to the second segment.

20. The battery device according to any one of claims 1-13, characterized in that, The main body includes a connecting part, and the adapter is connected to the main body through the connecting part.

21. The battery device according to claim 20, characterized in that, The extension direction of the connecting part is perpendicular to the extension direction of the fixing body. Along the extension direction of the connecting part, one end of the connecting part facing away from the fixing body is connected to the adapter body.

22. The battery device according to any one of claims 1-13, characterized in that, The battery device further includes a housing and a fixed bracket disposed within the housing. The fixed bracket is located at the target position, and a target distance is formed between the fixed bracket and the inner wall of the housing. The main body is insulated and fixed to the fixed bracket.

23. An electrical appliance, characterized in that, include: Electrical appliances; The battery device according to any one of claims 1-22, wherein the battery device is electrically connected to the electrical appliance.

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