Battery devices and electrical appliances

Abstract

This application relates to the field of battery technology and proposes a battery device and an electrical device. The battery device includes: a housing, including a frame structure that forms a first receiving cavity. The frame structure includes a first beam and a second beam adjacent to the first beam. The frame structure also includes a connector that connects the first beam and the second beam. A battery cell is received in the receiving cavity. In the battery device provided in this application embodiment, a connector is provided to connect the first beam and the second beam, thereby connecting adjacent beams of the frame structure and improving the processing and assembly efficiency of adjacent beams of the frame structure. At the same time, the first beam and the second beam connected by the connector can be made of different materials to facilitate the setting of first beams and second beams with different materials according to different needs.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and 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] For the current battery pack housing, the beams of the frame structure are usually connected by welding. The welding process requires tooling and takes a long time to process. Furthermore, defects are prone to occur during the process debugging, resulting in unstable strength and low processing efficiency. Summary of the Invention

[0004] In view of the above problems, this application provides a battery device and an electrical device that can alleviate the problem of low connection efficiency of adjacent beams in the current frame structure.

[0005] In a first aspect, embodiments of this application provide a battery device, comprising:

[0006] The enclosure includes a frame structure that encloses a first receiving cavity. The frame structure includes a first beam and a second beam adjacent to the first beam. The frame structure also includes a connector that is detachably connected to the first beam and the second beam, so that the connector, the first beam, and the second beam are detachable from each other. The basin is at least partially received in the first receiving cavity and has a second receiving cavity. The cover is sealed to the basin and seals the second receiving cavity, so that the second receiving cavity is independent of the space outside the enclosure. The battery cell is received in the second receiving cavity.

[0007] In this embodiment, a connector is provided to connect the first beam and the second beam, thereby improving the processing and assembly efficiency of the adjacent beams of the frame structure. Simultaneously, the first and second beams connected by the connector can be made of different materials, allowing for the creation of first and second beams with different materials according to different needs. The housing includes a basin, which is placed within the frame structure. The basin provides space for structures such as battery cells, and the frame structure provides support and protection for the basin. The second receiving cavity is independent of the space outside the housing, reducing the risk of impurities from outside the housing entering the second receiving cavity.

[0008] In some embodiments, the adapter includes a first part and a second part connected to the first part, the first part being connected to a first beam and the second part being connected to a second beam; the first beam is provided with a first snap-fit ​​portion, and the first part is detachably connected to the first snap-fit ​​portion; and / or, the second beam is provided with a second snap-fit ​​portion, and the second part is detachably connected to the second snap-fit ​​portion.

[0009] The technical solution of this embodiment provides several connection methods between the adapter and the first beam and the second beam. A first snap-fit ​​portion is provided on the first beam, and / or a second snap-fit ​​portion is provided on the second beam, so that the adapter can be detachably connected to the first snap-fit ​​portion and / or the second snap-fit ​​portion, so that the adapter can be connected to the corresponding first beam and second beam. At the same time, the provision of the first snap-fit ​​portion and the second snap-fit ​​portion can also play a role in pre-fixing the adapter, so as to further fix the adapter and the first beam and the second beam through other means.

[0010] In some embodiments, the first part is connected to the first beam body via a first connector; the first connector includes a first connecting part connected to the first part, one end of the first connecting part along a first direction is connected to a first mounting part, the first mounting part presses against the first beam body, and presses the first beam body against the first part.

[0011] The technical solution of this embodiment provides some specific structures for the connection between the first part and the first beam. When the first part is detachably connected to the first snap-fit ​​part, a first connector is also provided so that the first connector is connected to the first part and presses the first beam onto the first part, so as to better fix the first part to the first beam.

[0012] In some embodiments, the first beam has a beam cavity, and a reinforcing rib is provided in the beam cavity. At least a portion of the first part extends into the beam cavity and abuts against the reinforcing rib. A first connecting part passes through the reinforcing rib and is connected to the first part. A first mounting part presses against the side of the reinforcing rib away from the first part and presses the reinforcing rib against the first part. At least a portion of the first mounting part is accommodated in the beam cavity.

[0013] In the technical solution of this embodiment, a beam cavity is provided in the first beam body, so that at least a portion of the first part extends into the beam cavity, and the first connector presses the reinforcing rib to fix the first part on the reinforcing rib; so that at least a portion of the first part and the first connector are located in the beam cavity, so that the connection between the first part and the reinforcing rib is protected by the first beam body, reducing the risk of damage to the connection between the first part and the reinforcing rib due to external environmental influences.

[0014] In some embodiments, the first beam is provided with a mounting hole that communicates with the beam cavity, and the mounting hole is provided corresponding to the first mounting part.

[0015] In the technical solution of this embodiment, mounting holes are provided on the first beam so that the first connector can pass through the mounting holes and enter the beam cavity of the first beam, thereby facilitating the first connector to fix the first part to the reinforcing rib.

[0016] In some embodiments, the first part has a first cavity, and the first cavity is provided with a first reinforcing part, which is connected to the inner wall of the first cavity adjacent to the reinforcing rib; one end of the first connecting part passes through the reinforcing rib and is connected to the first reinforcing part.

[0017] In the technical solution of this embodiment, a first cavity is provided in the first part to reduce the weight of the first part; a first reinforcing part is provided, and the first connecting part of the first connector is connected to the first reinforcing part to improve the connection stability between the first part and the first connector. At the same time, the first reinforcing part also corresponds to the connection part between the first part and the reinforcing rib. In this case, the first reinforcing part can also improve the strength and stability of the connection part between the first part and the reinforcing rib.

[0018] In some embodiments, one end of the first connecting portion passes through the reinforcing rib along a first direction and extends into the first reinforcing portion; in the first direction, the size of the first reinforcing portion is greater than or equal to 7.5 mm.

[0019] The technical solution of this embodiment provides a range of sizes for the first reinforcing part, so that the first reinforcing part can better improve the connection stability between the first part and the first connector.

[0020] In some embodiments, the second part is connected to the second beam body via a second connector; the second connector includes a second connecting part connected to the second part, one end of the second connecting part along a second direction is connected to a second mounting part, the second mounting part presses against the second beam body, and presses the second beam body against the second part.

[0021] The technical solution of this embodiment provides some specific structures for the connection between the second part and the second beam. When the second part is detachably connected to the second snap-fit ​​part, a second connector is also provided so that the second connector is connected to the second part and presses the second beam onto the second part, so as to better fix the second part to the second beam.

[0022] In some embodiments, the second part has a second cavity, the second cavity is provided with a second reinforcing part, and the second connecting part is connected to the second reinforcing part.

[0023] In the technical solution of this embodiment, a second cavity is provided in the second part to reduce the weight of the second part; a second reinforcing part is provided, and the second connecting part of the second connector is connected to the second reinforcing part to improve the connection stability between the second part and the second connector. At the same time, the second reinforcing part also corresponds to the connection part between the second part and the second beam. In this case, the second reinforcing part can also improve the strength and stability of the connection part between the second part and the second beam.

[0024] In some embodiments, one end of the second connecting portion passes through at least a portion of the second beam along a second direction and extends into the second reinforcing portion; in the second direction, the size of the second reinforcing portion is greater than or equal to 7.5 mm.

[0025] The technical solution of this embodiment provides a range of dimensions for the second reinforcing part, so that the second reinforcing part can better improve the connection stability between the second part and the second connector.

[0026] In some embodiments, the basin is made of non-metallic composite materials.

[0027] In this embodiment, the material of the basin is a non-metallic composite material to reduce the weight of the basin, thereby reducing the weight of the entire battery device.

[0028] Secondly, embodiments of this application also provide an electrical device, including the battery device provided in some embodiments of the first aspect.

[0029] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0030] 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:

[0031] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0032] Figure 2 This is an exploded view of the battery device provided in some embodiments of this application;

[0033] Figure 3 This is a perspective view of the box provided in some embodiments of this application;

[0034] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0035] Figure 5 This is a top view of the housing provided in some embodiments of this application;

[0036] Figure 6 This is a bottom view of the housing provided in some embodiments of this application;

[0037] Figure 7 for Figure 5 Cross-sectional view at the middle BB line;

[0038] Figure 8 for Figure 5 Cross-sectional view at the CC line;

[0039] Figure 9 Three-dimensional schematic diagram of the adapter provided in some embodiments of this application Figure 1 ;

[0040] Figure 10 Three-dimensional schematic diagram of the adapter provided in some embodiments of this application Figure 2 ;

[0041] Figure 11 This is an exploded structural diagram of the box provided in some embodiments of this application.

[0042] The markings in the diagram mean:

[0043] 1000, vehicles;

[0044] 100. Battery device;

[0045] 10. Box body; 101. First receiving cavity; 11. Frame structure; 111. First beam; 1111. First snap-fit ​​part; 1112. Beam cavity; 1113. Reinforcing rib; 1114. Mounting hole; 112. Second beam; 1121. Second snap-fit ​​part; 113. Adapter; 1131. First part; 11311. First cavity; 11312. First reinforcing part; 1132. Second part; 11321. Second cavity; 11322. Second reinforcing part; 12. First connector; 121. First connecting part; 13. Second connector; 131. Second connecting part; 132. Second mounting part; 14. Basin; 141. Second receiving cavity;

[0046] 20. Battery cell;

[0047] 200. Motor;

[0048] 300. Controller. Detailed Implementation

[0049] 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.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0051] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0052] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0053] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0054] 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.

[0055] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0056] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0057] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0058] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0059] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as 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 military equipment and aerospace. With the continuous expansion of battery device applications, market demand is also constantly increasing.

[0060] In current battery devices, the frame structure of the casing is typically formed by connecting multiple beams end to end in sequence. During the fabrication of the frame structure, adjacent beams are usually connected by welding. However, the welding process is cumbersome, time-consuming, and inefficient. Furthermore, defects can easily occur during the process debugging of adjacent beams, leading to unstable strength. This poses a risk of failure under vibration and impact conditions of the battery device, which can further reduce efficiency.

[0061] Based on the above considerations, in order to alleviate the problem of low connection efficiency of adjacent beams in the current frame structure, this application provides a battery device in which the frame structure includes adjacent first beams and second beams, and an adapter is provided to connect the first beams and second beams, so that the first beams and second beams are connected by the adapter. In such a battery device, the adjacent first beams and second beams in the frame structure are connected by the adapter, thereby improving the processing and assembly efficiency of adjacent first beams and second beams in the frame structure; at the same time, the first beams and second beams connected by the adapter can be made of different materials, so as to set first beams and second beams with different materials according to different needs.

[0062] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0063] refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery is installed inside the vehicle 1000, and the battery can be located at the bottom, front, or rear of the vehicle 1000. The battery can be used to power the vehicle 1000; for example, the battery can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 300 and a motor 200. The controller 300 is used to control the battery to supply power to the motor 200, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0064] In some embodiments of this application, the battery can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0065] refer to Figure 2 , Figure 2 This is an exploded structural diagram of a battery device 100 provided in some embodiments of this application. The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells 20, which are connected in series, parallel, or mixed connection via a busbar.

[0066] In some embodiments, the battery cell assembly is typically formed by arranging a plurality of battery cells 20.

[0067] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 20 into a single module. As an example, the battery module can be formed by bundling multiple battery cells 20 together with cable ties.

[0068] In some embodiments, the battery device 100 may be a battery pack, which includes a housing 10 and one or more battery cell assemblies housed in the housing 10.

[0069] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing 10 by fixing the battery module in the housing 10.

[0070] As an example, the battery cell assembly can also be housed in the housing 10 by directly fixing multiple battery cells 20 to the housing 10.

[0071] As an example, the housing 10 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 10 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.

[0072] As an example, the housing 10 may 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 10 forms an enclosed space to accommodate the battery cell assembly.

[0073] In some embodiments, the housing 10 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 10 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 10 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0074] Firstly, reference Figure 3 , Figure 4 Some embodiments of this application provide a battery device 100, including a housing 10 and a battery cell 20. The housing 10 includes a frame structure 11 that forms a first receiving cavity 101. The frame structure 11 includes a first beam 111 and a second beam 112 adjacent to the first beam 111. The frame structure 11 also includes a connector 113, which is detachably connected to the first beam 111 and the second beam 112, so that the connector 113, the first beam 111, and the second beam 112 are mutually detachable. The battery cell 20 is received in the first receiving cavity 101.

[0075] In the figure, the X-axis is the length direction of the battery device 100, the Y-axis is the width direction of the battery device 100, and the Z-axis is the height direction of the battery device 100.

[0076] The housing 10 refers to the structure in the battery device 100 that provides space for housing the battery cells 20 and other structures; the shape of the housing 10 can be prismatic, cylindrical or other shapes; the material of the housing 10 can include metal, plastic or other materials.

[0077] The frame structure 11 refers to the structure in the housing 10 used to provide side protection for the battery cell 20. The frame structure 11 may include multiple beams connected end to end. The frame structure 11 may be a quadrilateral square frame structure, or a pentagonal, hexagonal or other shaped frame structure. The beams in the frame structure 11 may be box beams, or I-beams or other shaped beam structures. The material of the frame structure 11 may include metal, plastic or other materials.

[0078] The first receiving cavity 101 refers to the spatial structure in the housing 10 used to accommodate the battery cell 20 and other structures. The first receiving cavity 101 is formed inside the housing 10. The first receiving cavity 101 can be a prism-shaped spatial structure, a cylindrical spatial structure, or other shapes of spatial structures. The shape of the first receiving cavity 101 can also be set according to the shape of the housing 10.

[0079] Each beam in the frame structure 11 can form a first receiving cavity 101. At this time, the first receiving cavity 101 can be a spatial structure of the frame structure 11, or it can be a spatial structure located inside the frame structure 11.

[0080] A battery cell 20 refers to the smallest unit that makes up the battery device 100. The number of battery cells 20 can be one, two or more. When the number of battery cells 20 is at least two, the battery cells 20 can be connected in series, in parallel or in a mixed connection. The battery cells 20 can be arranged in one direction or in an array in two different directions. The battery cells 20 can be fixed and constrained by straps, plates or other structures. The battery cells 20 can also be directly set in the first receiving cavity 101 of the housing 10.

[0081] The first beam 111 refers to the beam structure in the frame structure 11. The first beam 111 can be an I-beam, a box beam, or a beam structure of other shapes. The first beam 111 can work with other beams to form the frame structure 11 and enclose the first receiving cavity 101. The first beam 111 and other adjacent beams can be connected by bonding, welding, screwing, or other means. The material of the first beam 111 can include metal, plastic, or other materials.

[0082] Similar to the first beam 111, the second beam 112 also refers to the beam structure in the frame structure 11. The second beam 112 can be an I-beam, a box beam, or a beam structure of other shapes. The second beam 112 can work together with the first beam 111 or other beams to form the frame structure 11 and enclose the first receiving cavity 101. The material of the second beam 112 can include metal, plastic, or other materials.

[0083] The second beam 112 is adjacent to the first beam 111, meaning the second beam 112 should be connected to the first beam 111. In this case, the length directions of the first beam 111 and the second beam 112 can be different. The length direction of the first beam 111 can be parallel to the length direction X of the battery device 100, or parallel to the width direction Y of the battery device 100, or parallel to other directions. The length direction of the second beam 112 can be parallel to the width direction of the battery device 100, or parallel to the length direction X of the battery device 100, or parallel to other directions. For example, the length direction of the first beam 111 is parallel to the width direction Y of the battery device 100, and the length direction of the second beam 112 is parallel to the length direction X of the battery device 100.

[0084] The adapter 113 refers to the structure in the frame structure 11 used to connect the first beam 111 and the second beam 112. The adapter 113 can be a columnar structure, a plate-like structure, or a structure of other shapes. The adapter 113 can be a prism-like structure, a cylindrical structure, a square plate, or a structure of other regular shapes, or it can be an irregular shape. The material of the adapter 113 can include metal, plastic, or other materials.

[0085] The adapter 113 is connected to the first beam 111 and the second beam 112. The adapter 113 can be connected to the first beam 111 and the second beam 112 by plugging, screwing, riveting or other means. The adapter 113 is connected to the first beam 111 and the second beam 112 so that the first beam 111 and the second beam 112 can be indirectly connected through the adapter 113.

[0086] The number of adapters 113 can be one, two or more; when there is one adapter 113, the adapter 113 can be used to connect adjacent first beams 111 and second beams 112; when there are two or more adapters 113, the adapter 113 can also be connected to other adjacent beams in the frame structure 11.

[0087] The adapter 113 is detachably connected to the first beam 111. In this case, the adapter 113 can be detachably connected to the first beam 111 by screwing, riveting, snapping or other means. The adapter 113 is detachably connected to the second beam 112. In this case, the adapter 113 can be detachably connected to the second beam 112 by screwing, riveting, snapping or other means.

[0088] Compared to welding the first beam 111 to the second beam 112, the detachable connection of the first beam 111 and the second beam 112 via the adapter 113 can improve the assembly efficiency of the first beam 111 and the second beam 112; moreover, the first beam 111 and the second beam 112 can be made of different materials to meet the different needs of different beams.

[0089] In this embodiment, a connector 113 is provided, and the connector 113 is detachably connected to the first beam 111 and the second beam 112, so as to connect the adjacent beams of the frame structure 11 through the connector 113, thereby improving the connection efficiency of the adjacent beams of the frame structure 11; at the same time, the first beam 111 and the second beam 112 connected by the connector 113 can be made of different materials, so as to set the first beam 111 and the second beam 112 with different materials according to different needs.

[0090] refer to Figures 3 to 10 In some embodiments, the adapter 113 includes a first part 1131 and a second part 1132 connected to the first part 1131. The first part 1131 is connected to the first beam 111, and the second part 1132 is connected to the second beam 112. The first beam 111 is provided with a first snap-fit ​​part 1111, and the first part 1131 is detachably connected to the first snap-fit ​​part 1111. And / or, the second beam 112 is provided with a second snap-fit ​​part 1121, and the second part 1132 is detachably connected to the second snap-fit ​​part 1121.

[0091] The first part 1131 refers to the part of the adapter 113 used to connect with the first beam 111. The shape of the first part 1131 can be prism, cylinder, square plate or other regular shape, or it can be irregular shape. The material of the first part 1131 can be metal, plastic or other materials.

[0092] The second part 1132 refers to the portion of the adapter 113 used to connect with the second beam 112. The shape of the second part 1132 can be prism-shaped, cylindrical, square plate-shaped, or other regular shapes. The shape of the second part 1132 can also be irregular. The second part 1132 is connected to the first part 1131. The second part 1132 can be connected to the first part 1131 by bonding, welding, screwing, or other means. The second part 1132 can also be integrally formed with the first part 1131. The material of the second part 1132 can include metal, plastic, or other materials. The material of the second part 1132 can be the same as or different from the material of the first part 1131.

[0093] The first snap-fit ​​portion 1111 refers to the structure provided on the first beam 111. The first part 1131 can cooperate with the first snap-fit ​​portion 1111 so that the first part 1131 can be connected to the first beam 111. The first snap-fit ​​portion 1111 can be a slot for the first part 1131 to be inserted, or the first snap-fit ​​portion 1111 can be a protrusion for the first part 1131 to be inserted.

[0094] For example, the first snap-fit ​​portion 1111 has a groove structure. In this case, the first snap-fit ​​portion 1111 may have one or more openings so that the first part 1131 can be inserted into the first snap-fit ​​portion 1111. The cross-sectional shape of the first snap-fit ​​portion 1111 may be circular, square, trapezoidal or other shapes, and the shape of the first snap-fit ​​portion 1111 may also be set according to the shape of the first part 1131.

[0095] The first part 1131 is detachably connected to the first snap-fit ​​part 1111. At this time, the first part 1131 can be detachably connected to the first snap-fit ​​part 1111 by screwing, riveting, snap-fitting or other means.

[0096] For example, when the first snap-fit ​​portion 1111 has a slot structure, the first part 1131 is inserted into the first snap-fit ​​portion 1111, that is, the first part 1131 can be inserted into the first snap-fit ​​portion 1111. The first part 1131 can be inserted only into the first snap-fit ​​portion 1111 and spaced apart from the inner wall of the first snap-fit ​​portion 1111. The first part 1131 can also abut against the inner wall of the first snap-fit ​​portion 1111 and have an interference fit with the inner wall of the first snap-fit ​​portion 1111. At this time, the first part 1131 can also be riveted to the first beam 111 through the first snap-fit ​​portion 1111. The first part 1131 can be connected to the first beam 111 when inserted into the first snap-fit ​​portion 1111. When the first part 1131 is inserted into the first snap-fit ​​portion 1111, the first part 1131 does not need to be connected to the first beam 111 by other means. The first part 1131 can also be further connected to the first beam 111 by screwing, snap-fitting or other means.

[0097] For example, when the first snap-fit ​​portion 1111 has a slot structure, the first part 1131 is inserted into the first snap-fit ​​portion 1111, and the first part 1131 is also connected to the first beam body 111 by other means; for example, when the first snap-fit ​​portion 1111 has a slot structure, the first part 1131 is inserted into the first snap-fit ​​portion 1111, and the first part 1131 is also connected to the first beam body 111 by bolts.

[0098] For example, when the first snap-fit ​​portion 1111 has a groove structure, the first part 1131 is interference-fitted with the inner wall of the first snap-fit ​​portion 1111, that is, the first part 1131 is riveted to the first beam 111 through the first snap-fit ​​portion 1111; for example, when the first snap-fit ​​portion 1111 has a groove structure, the first part 1131 is interference-fitted with the inner wall of the first snap-fit ​​portion 1111, and at this time the first part 1131 is no longer connected to the first beam 111 by other means.

[0099] The second snap-fit ​​part 1121 refers to the structure provided on the second beam 112. The second part 1132 can cooperate with the second snap-fit ​​part 1121 so that the second part 1132 can be connected to the second beam 112. The second snap-fit ​​part 1121 can be a slot for the second part 1132 to be inserted, or the second snap-fit ​​part 1121 can be a protrusion for the second part 1132 to be inserted.

[0100] For example, the second snap-fit ​​portion 1121 is a slot structure. In this case, the second snap-fit ​​portion 1121 may have one or more openings so that the second part 1132 can be inserted into the second snap-fit ​​portion 1121. The cross-sectional shape of the second snap-fit ​​portion 1121 may be circular, square, trapezoidal or other shapes, and the shape of the second snap-fit ​​portion 1121 may also be set according to the shape of the second part 1132.

[0101] The second part 1132 is detachably connected to the second snap-fit ​​part 1121. At this time, the second part 1132 can be detachably connected to the second snap-fit ​​part 1121 by screwing, riveting, snap-fitting or other means.

[0102] For example, when the second snap-fit ​​portion 1121 has a slot structure, the second part 1132 is inserted into the second snap-fit ​​portion 1121, that is, the second part 1132 can be inserted into the second snap-fit ​​portion 1121. The second part 1132 can be inserted only into the second snap-fit ​​portion 1121 and spaced apart from the inner wall of the second snap-fit ​​portion 1121. The second part 1132 can also abut against the inner wall of the second snap-fit ​​portion 1121 and have an interference fit with the inner wall of the second snap-fit ​​portion 1121. At this time, the second part 1132 can also be riveted to the second beam 112 through the second snap-fit ​​portion 1121. The second part 1132 can be connected to the second beam 112 when inserted into the second snap-fit ​​portion 1121. When the second part 1132 is inserted into the second snap-fit ​​portion 1121, the second part 1132 does not need to be connected to the second beam 112 by other means. The second part 1132 can also be further connected to the second beam 112 by screwing, snap-fitting or other means.

[0103] For example, when the second snap-fit ​​portion 1121 is a slot structure, the second part 1132 is inserted into the second snap-fit ​​portion 1121, and the second part 1132 is also connected to the second beam 112 by other means; for example, when the second snap-fit ​​portion 1121 is a slot structure, the second part 1132 is inserted into the second snap-fit ​​portion 1121, and the second part 1132 is also connected to the second beam 112 by bolts.

[0104] For example, when the second snap-fit ​​portion 1121 is a groove structure, the second part 1132 is interference-fitted with the inner wall of the second snap-fit ​​portion 1121, that is, the second part 1132 is riveted to the second beam 112 through the second snap-fit ​​portion 1121; for example, when the second snap-fit ​​portion 1121 is a groove structure, the second part 1132 is interference-fitted with the inner wall of the second snap-fit ​​portion 1121, and the second part 1132 is no longer connected to the second beam 112 in any other way.

[0105] This embodiment provides several connection methods between the adapter 113 and the first beam 111 and the second beam 112. A first snap-fit ​​portion 1111 is provided on the first beam 111, and / or a second snap-fit ​​portion 1121 is provided on the second beam 112, so that the adapter 113 can be detachably connected to the first snap-fit ​​portion 1111 and / or the second snap-fit ​​portion 1121, so that the adapter 113 can be connected to the corresponding first beam 111 and second beam 112. At the same time, the provision of the first snap-fit ​​portion 1111 and the second snap-fit ​​portion 1121 can also play a pre-fixing role for the adapter 113, so that the adapter 113 and the first beam 111 and the second beam 112 can be further fixed by other means.

[0106] refer to Figure 5 , Figure 7 , Figure 8In some embodiments, the first part 1131 is connected to the first beam 111 via the first connector 12; the first connector 12 includes a first connecting part 121 connected to the first part 1131, and a first mounting part is connected to one end of the first connecting part 121 along a first direction. The first mounting part presses against the first beam 111 and presses the first beam 111 against the first part 1131.

[0107] The first connector 12 refers to the structure in the housing 10 used to connect the first part 1131 and the first beam 111. The first connector 12 can connect the first part 1131 to the first beam 111 to fix the first part 1131 on the first beam 111.

[0108] The first connecting part 121 refers to the part of the first connector 12 that is connected to the first part 1131. The first connecting part 121 can be a cylindrical structure, a prismatic structure, or a structure of other shapes. The first connector 12 can be connected to the first connecting part 121 by screwing, snapping, or other means. The material of the first connector 12 can include metal, plastic, or other materials.

[0109] The first mounting part refers to the portion of the first connector 12 used to fix the first beam 111. The first mounting part can press the first beam 111 against the first part 1131. The first mounting part can be a cylindrical structure, a prismatic structure, a circular plate structure, a square plate structure, or other shaped structures. The first mounting part is connected to the first connecting part 121. The first mounting part can be directly connected to the first connecting part 121, or it can be indirectly connected to the first connecting part 121 through an intermediate structure. The first mounting part can be connected to the first connecting part 121 by welding, bonding, screwing, or other methods. The first mounting part can also be integrally formed with the first connecting part 121. The material of the first mounting part can include metal, plastic, or other materials. The material of the first mounting part can be the same as or different from the material of the first connecting part 121.

[0110] The first mounting portion is connected to one end of the first connecting portion 121 along a first direction; the first direction can be the height direction Z of the battery device 100, the width direction Y of the battery device 100, or other directions. For example, the first direction is the height direction Z of the battery device 100.

[0111] When the first connecting part 121 is connected to the first part 1131, the relative position of the first connecting part 121 and the first part 1131 is fixed. At this time, the first mounting part can press the first beam 111 onto the first part 1131 to fix the relative position of the first part 1131 and the first beam 111.

[0112] For example, when the first part 1131 is detachably connected to the first snap-fit ​​part 1111, one end of the first connecting part 121 is connected to the first part 1131, and the other end of the first connecting part 121 passes through the wall surface of the first snap-fit ​​part 1111 and extends beyond the first beam 111. The first mounting part is connected to the end of the first connecting part 121 away from the first part 1131 and presses against the first beam 111. At this time, the first mounting part and the first part 1131 are located on both sides of the corresponding wall surface of the first snap-fit ​​part 1111 and clamp the corresponding wall surface of the first snap-fit ​​part 1111, thereby fixing the first part 1131 to the first beam 111.

[0113] This embodiment provides some specific structures for the connection between the first part 1131 and the first beam 111. When the first part 1131 is detachably connected to the first snap-fit ​​part 1111, a first connector 12 is also provided so that the first connector 12 is connected to the first part 1131 and presses the first beam 111 against the first part 1131, so as to better fix the first part 1131 to the first beam 111.

[0114] refer to Figure 5 , Figure 7 , Figure 8 In some embodiments, the first beam 111 has a beam cavity 1112, and a reinforcing rib 1113 is provided in the beam cavity 1112. At least a portion of the first part 1131 extends into the beam cavity 1112 and abuts against the reinforcing rib 1113. A first connecting part 121 passes through the reinforcing rib 1113 and is connected to the first part 1131. A first mounting part presses against the side of the reinforcing rib 1113 away from the first part 1131 and presses the reinforcing rib 1113 against the first part 1131. At least a portion of the first mounting part is accommodated in the beam cavity 1112.

[0115] The beam cavity 1112 refers to the spatial structure set within the first beam 111. The beam cavity 1112 can be a prism-shaped spatial structure, a cylindrical spatial structure, or a spatial structure of other shapes. The first beam 111 can have only one beam cavity 1112, or it can have two or more beam cavities 1112. When the first beam 111 has a beam cavity 1112, the first beam 111 can be a thin-walled structure. In this case, the first beam 111 can be a beam structure formed by bending a sheet metal, a beam structure formed by extrusion, or a beam structure formed by other processing methods.

[0116] The arrangement of the beam cavity 1112 enables the first beam 111 to not only protect the battery cell 20 or other structures in the first receiving cavity 101, but also to reduce the weight of the beam cavity 1112.

[0117] The reinforcing rib 1113 refers to a reinforcing structure installed within the beam cavity 1112. The reinforcing rib 1113 is located within the beam cavity 1112 and can be a plate-like structure, a column-like structure, or other shapes. The reinforcing rib 1113 can be a square plate-like structure, a triangular plate-like structure, a prism-like structure, a cylindrical structure, or other shapes. The reinforcing rib 1113 can be connected to the inner wall of the beam cavity 1112 by bonding, welding, screwing, or other methods. The reinforcing rib 1113 can also be integrally formed with the first beam 111. The number of reinforcing ribs 1113 can be one, two, or more. The material of the reinforcing rib 1113 can include metal, plastic, or other materials.

[0118] At least a portion of the first part 1131 extends into the beam cavity 1112, where the first snap-fit ​​part 1111 can be a structure within the beam cavity 1112; the first part 1131 can be completely located within the beam cavity 1112, or it can be only partially located within the beam cavity 1112.

[0119] The first part 1131 abuts against the reinforcing rib 1113. At this time, the first connecting part 121 passes through the reinforcing rib 1113 and is connected to the first part 1131. The first connecting part 121 can also be connected to the first part 1131 by screwing, snapping, riveting or other means. The first mounting part presses against the side of the reinforcing rib 1113 away from the first part 1131 to press the reinforcing rib 1113 against the first part 1131. At this time, the first part 1131 and the first mounting part are respectively clamped on both sides of the reinforcing rib 1113, thereby fixing the first part 1131 to the reinforcing rib 1113.

[0120] At least a portion of the first mounting part is accommodated within the beam cavity 1112. The first mounting part may be completely accommodated within the beam cavity 1112 or only partially accommodated within the beam cavity 1112. Since the reinforcing rib 1113 is provided within the beam cavity 1112, when the first mounting part is pressed against the reinforcing rib 1113, at least a portion of the first mounting part can be located within the beam cavity 1112, thereby reducing the volume of the first mounting part exposed outside the first beam 111. This protects the first mounting part through the first beam 111, reducing the risk of damage to the first mounting part from collisions with debris in the environment outside the battery device 100, thereby improving the connection stability of the first connector 12 to the first part 1131 and the first beam 111.

[0121] In this embodiment, a beam cavity 1112 is provided inside the first beam 111, so that at least a portion of the first part 1131 extends into the beam cavity 1112, and the first connector 12 presses against the reinforcing rib 1113 to fix the first part 1131 onto the reinforcing rib 1113; so that at least a portion of the first part 1131 and the first connector 12 are located inside the beam cavity 1112, so that the connection between the first part 1131 and the reinforcing rib 1113 is protected by the first beam 111, reducing the risk of damage to the connection between the first part 1131 and the reinforcing rib 1113 due to external environmental influences.

[0122] refer to Figure 5 , Figure 7 In some embodiments, the first beam 111 is provided with a mounting hole 1114 that communicates with the beam cavity 1112, and the mounting hole 1114 is correspondingly provided with the first mounting part.

[0123] Mounting hole 1114 refers to the hole structure provided on the first beam 111. Mounting hole 1114 can be a square hole, a round hole or other shaped hole structure. Mounting hole 1114 can be a straight hole, a tapered hole, a stepped hole or other shaped hole structure. The number of mounting holes 1114 can be one, or two or more.

[0124] Mounting hole 1114 is used for the first connector 12 to pass through, so that the first connector 12 can be connected to the reinforcing rib 1113 and the first part 1131 in the beam cavity 1112.

[0125] When the first connector 12 is connected to the first part 1131 and the reinforcing rib 1113, the mounting hole 1114 is correspondingly provided with the first mounting part. At this time, the projection of the first mounting part along its axial direction falls within the mounting hole 1114, so that the first connector 12 can pass through the mounting hole 1114 and connect with the reinforcing rib 1113. When the first connector 12 is connected to the first part 1131 and the reinforcing rib 1113, the mounting hole 1114 can be coaxially provided with the first mounting part, and the axis of the mounting hole 1114 can also be offset from the axis of the first mounting part.

[0126] For example, when the first connecting part 121 passes through the reinforcing rib 1113 and is connected to the first part 1131, the reinforcing rib 1113 is provided with a reinforcing rib 1113 hole for the first connecting part 121 to pass through. The reinforcing rib 1113 hole is coaxially arranged with the first mounting part. At this time, the reinforcing rib 1113 hole can be coaxial with the mounting hole 1114.

[0127] An installation hole 1114 is provided on the first beam 111 so that the first connector 12 can enter the beam cavity 1112, so that the first connector 12 can be connected to the reinforcing rib 1113 and the first part 1131, and is convenient for workers to operate; at the same time, this setting also makes it easy for the first mounting part to enter the beam cavity 1112, thereby facilitating the protection of the first connector 12 through the first beam 111.

[0128] In this embodiment, a mounting hole 1114 is provided on the first beam 111 so that the first connector 12 can pass through the mounting hole 1114 and enter the beam cavity 1112 of the first beam 111, thereby facilitating the first connector 12 to fix the first part 1131 on the reinforcing rib 1113 and facilitating the first beam 111 to provide protection for the first connector 12.

[0129] refer to Figure 5 , Figure 7 , Figure 10 In some embodiments, the first part 1131 has a first cavity 11311, and the first cavity 11311 is provided with a first reinforcing part 11312. The first reinforcing part 11312 is connected to the inner wall of the first cavity 11311 adjacent to the reinforcing rib 1113; one end of the first connecting part 121 passes through the reinforcing rib 1113 and is connected to the first reinforcing part 11312.

[0130] The first cavity 11311 refers to the spatial structure disposed within the first part 1131. The shape of the first cavity 11311 can be a prism-shaped spatial structure, a cylindrical spatial structure, or a spatial structure of other shapes. The shape of the first cavity 11311 can also be set according to the shape of the first part 1131. The first cavity 11311 can be a spatial structure with one or more openings so that the first cavity 11311 can be connected to the space outside the first part 1131. The first cavity 11311 can also be a closed spatial structure.

[0131] The first reinforcing part 11312 refers to the reinforcing structure provided in the first cavity 11311. The first reinforcing part 11312 can be a prism-shaped structure, or a cylindrical structure, a square plate-shaped structure, a triangular plate-shaped structure, or other shapes. The first reinforcing part 11312 is connected to the inner wall of the first cavity 11311. The first reinforcing part 11312 can also be connected to the inner wall of the first cavity 11311 by bonding, welding, screwing, or other means. Alternatively, the first part 1131 can be an integral structure and the first reinforcing part 11312 can be a part of the first part 1131. The material of the first reinforcing part 11312 can include metal, plastic, or other materials.

[0132] A first cavity 11311 is provided in the first part 1131 to reduce the weight of the first part 1131, thereby reducing the weight of the entire adapter 113 and reducing the negative impact that the adapter 113 may have on the weight of the entire battery device 100.

[0133] When a first cavity 11311 is provided in the first part 1131, a first reinforcing part 11312 is provided to improve the strength of the corresponding part of the first part 1131.

[0134] The first connector 12 is connected to the first reinforcing part 11312. The first connector 12 can be connected to the first reinforcing part 11312 by screwing, snapping, riveting or other means. Connecting the first connector 12 to the first reinforcing part 11312 can improve the connection stability between the first connector 12 and the first part 1131.

[0135] The number of first reinforcing parts 11312 can be one, two or more; when the number of first reinforcing parts 11312 is one, one or more first connectors 12 can be connected to the same first reinforcing part 11312; when the number of first reinforcing parts 11312 is two or more, different first connectors 12 can be connected to different first reinforcing parts 11312, or two or more first connectors 12 can be connected to one first reinforcing part 11312.

[0136] The first reinforcing part 11312 is disposed on the inner wall of the first cavity 11311 adjacent to the reinforcing rib 1113, so that the connecting part of the first connector 12 can be connected to the first reinforcing part 11312 after passing through the reinforcing rib 1113; at the same time, the first reinforcing part 11312 can improve the strength of the connection between the first part 1131 and the reinforcing member, improve the connection stability between the first part 1131 and the reinforcing rib 1113, thereby improving the connection stability between the adapter 113 and the first beam 111.

[0137] In this embodiment, a first cavity 11311 is provided in the first part 1131 to reduce the weight of the first part 1131; a first reinforcing part 11312 is provided, and the first connecting part 121 of the first connector 12 is connected to the first reinforcing part 11312 to improve the connection stability between the first part 1131 and the first connector 12. At the same time, the first reinforcing part 11312 also corresponds to the connection part between the first part 1131 and the reinforcing rib 1113. In this case, the first reinforcing part 11312 can also improve the strength and stability of the connection part between the first part 1131 and the reinforcing rib 1113.

[0138] refer to Figure 5 , Figure 7 In some embodiments, one end of the first connecting portion 121 passes through the reinforcing rib 1113 along a first direction and extends into the first reinforcing portion 11312; in the first direction, the size of the first reinforcing portion 11312 is greater than or equal to 7.5 mm.

[0139] One end of the first connecting portion 121 passes through the reinforcing rib 1113 and extends into the first reinforcing portion 11312, so that the first connecting portion 121 can be connected to the first reinforcing portion 11312. At this time, the part of the first connecting portion 121 extending into the first reinforcing portion 11312 can be riveted to the first reinforcing portion 11312, screwed to the first reinforcing portion 11312, or connected in other ways.

[0140] For example, the first reinforcing part 11312 is provided with a threaded hole, one end of the first connecting part 121 passes through the reinforcing rib 1113 and extends into the threaded hole, and the part of the first connecting part 121 located in the threaded hole is threadedly engaged with the threaded hole.

[0141] For example, the first reinforcing part 11312 is provided with a riveting hole, and one end of the first connecting part 121 extends into the riveting hole after passing through the reinforcing rib 1113. The part of the first connecting part 121 located in the riveting hole is interference-fitted with the riveting hole to achieve riveting with the first reinforcing part 11312.

[0142] The dimension of the first reinforcing part 11312 in the first direction is... Figure 7 As shown in L1, the dimension of the first reinforcing part 11312 in the first direction is greater than or equal to 7.5mm. The dimension of the first reinforcing part 11312 in the first direction can be 7.5mm, or it can be 8mm, 9mm, 10mm, 11mm, 12mm or other values.

[0143] Since one end of the first connecting part 121 extends into the first reinforcing part 11312 along the first direction and is connected to the first reinforcing part 11312, the size of the first reinforcing part 11312 in the first direction is positively correlated with the connection stability of the first connecting part 121. The larger the size of the first reinforcing part 11312 in the first direction, the better the connection stability between the first connecting part 121 and the first reinforcing part 11312.

[0144] Accordingly, the dimension of the first reinforcing part 11312 in the first direction is greater than or equal to 7.5 mm, so that the first connecting part 121 can be connected to the first reinforcing part 11312 more stably, thereby enabling the first connecting member 12 to fix the first part 1131 to the reinforcing rib 1113 more stably, thereby improving the connection stability between the first part 1131 and the first beam 111.

[0145] For example, the dimension of the first reinforcing part 11312 in the first direction can be 7.5mm. In this case, the volume of the first reinforcing part 11312 is small. The first reinforcing part 11312 can improve the connection stability between the first connecting part 121 and the first reinforcing part 11312. The space occupied by the first reinforcing part 11312 is also small, and the weight is also small.

[0146] For example, the dimension of the first reinforcing part 11312 in the first direction can be 10mm. In this case, the first reinforcing part 11312 can better improve the connection stability between the first connecting part 121 and the first reinforcing part 11312, while the space occupation and weight of the first reinforcing part 11312 are also moderate.

[0147] This embodiment provides a range of sizes for the first reinforcing part 11312 so that the first reinforcing part 11312 can better improve the connection stability between the first part 1131 and the first connector 12.

[0148] refer to Figure 10 In some embodiments, the first reinforcing part 11312 has a dimension greater than or equal to 8 mm in the second direction; and / or, the first reinforcing part 11312 has a dimension greater than or equal to 8 mm in the third direction.

[0149] The size of the first reinforcing part 11312 in the second direction reflects the volume of the first reinforcing part 11312. The size of the first reinforcing part 11312 in the second direction is also positively correlated with the strength of the first reinforcing part 11312. The larger the size of the first reinforcing part 11312 in the second direction, the greater the strength of the first reinforcing part 11312.

[0150] The dimension of the first reinforcing part 11312 in the second direction is greater than or equal to 8 mm. The dimension of the first reinforcing part 11312 in the second direction may also be 8 mm, 9 mm, 10 mm, 11 mm, 12 mm or other values.

[0151] The second direction can be either the length direction X of the battery device 100 or the width direction Y of the battery device 100; for example, the second direction is the width direction Y of the battery device 100.

[0152] For example, the first reinforcing part 11312 has a dimension of 8mm in the second direction. In this case, the first reinforcing part 11312 can improve the connection stability between the first connecting part 121 and the first reinforcing part 11312, and the space occupied by the first reinforcing part 11312 is also small, and the weight is also small.

[0153] The size of the first reinforcing part 11312 in the third direction reflects the volume of the first reinforcing part 11312. The size of the first reinforcing part 11312 in the third direction is also positively correlated with the strength of the first reinforcing part 11312. The larger the size of the first reinforcing part 11312 in the third direction, the greater the strength of the first reinforcing part 11312.

[0154] The dimension of the first reinforcing part 11312 in the third direction is greater than or equal to 8mm. The dimension of the first reinforcing part 11312 in the third direction can also be 8mm, 9mm, 10mm, 11mm, 12mm or other values.

[0155] The third direction can be either the length direction X of the battery device 100 or the width direction Y of the battery device 100; for example, the third direction is the length direction X of the battery device 100.

[0156] For example, the first reinforcing part 11312 has a dimension of 8mm in the third direction. In this case, the first reinforcing part 11312 can improve the connection stability between the first connecting part 121 and the first reinforcing part 11312, and the space occupied by the first reinforcing part 11312 is also small, and the weight is also small.

[0157] The first reinforcing part 11312 may have a dimension greater than or equal to 8 mm only in the second direction or the third direction, or it may have a dimension greater than or equal to 8 mm in both the second direction and the third direction.

[0158] This embodiment further provides a range of sizes for the first reinforcing part 11312 so that the first reinforcing part 11312 can better improve the connection stability between the first part 1131 and the first connector 12.

[0159] refer to Figure 5 , Figure 7 , Figure 8 In some embodiments, the second part 1132 is connected to the second beam 112 via a second connector 13; the second connector 13 includes a second connecting part 131 connected to the second part 1132, and a second mounting part 132 is connected to one end of the second connecting part 131 along a second direction. The second mounting part 132 presses against the second beam 112 and presses the second beam 112 against the second part 1132.

[0160] The second connector 13 refers to the structure in the housing 10 used to connect the second part 1132 and the second beam 112. The second connector 13 can connect the second part 1132 to the second beam 112 to fix the second part 1132 on the second beam 112.

[0161] The second connecting part 131 refers to the part of the second connector 13 that is connected to the second part 1132. The second connecting part 131 can be a cylindrical structure, a prismatic structure, or a structure of other shapes. The second connector 13 can be connected to the second connecting part 131 by screwing, snapping, or other means. The material of the second connector 13 can include metal, plastic, or other materials.

[0162] The second mounting part 132 refers to the portion of the second connector 13 used to fix the second beam 112. The second mounting part 132 can press the second beam 112 against the second part 132. The second mounting part 132 can be a cylindrical structure, a prismatic structure, a circular plate structure, a square plate structure, or other shapes. The second mounting part 132 is connected to the second connecting part 131. The second mounting part 132 can be directly connected to the second connecting part 131, or it can be indirectly connected to the second connecting part 131 through an intermediate structure. The second mounting part 132 can be connected to the second connecting part 131 by welding, bonding, screwing, or other methods. The second mounting part 132 can also be integrally formed with the second connecting part 131. The material of the second mounting part 132 can include metal, plastic, or other materials. The material of the second mounting part 132 can be the same as or different from the material of the second connecting part 131.

[0163] The second mounting portion 132 is connected to the second connecting portion 131 along a second direction. The second direction can be the length direction X of the battery device 100, the width direction Y of the battery device 100, or other directions. For example, the second direction can be perpendicular to the first direction. When the first direction is the height direction Z of the battery device 100, the second direction can be the length direction X, the width direction Y, or other directions perpendicular to the height direction Z of the battery device 100.

[0164] For example, the first direction is the height direction Z of the battery device 100, and the second direction is the width direction Y of the battery device 100.

[0165] The second mounting part 132 is connected to the second connecting part 131 along the second direction, so that the second mounting part 132 can press the second beam 112 onto the second part 1132 along the second direction. That is, the second mounting part 132 and the second part 1132 can be clamped on both sides of the second beam 112 respectively, thereby fixing the second part 1132 onto the second beam 112.

[0166] When the second mounting part 132 presses the second beam 112 against the second part 1132 along the second direction, the second beam 112 is located on one side of the first receiving cavity 101 along the second direction.

[0167] When the second connecting part 131 is connected to the second part 1132, the relative position of the second connecting part 131 and the second part 1132 is fixed. At this time, the second mounting part 132 can press the second beam 112 onto the second part 1132 to fix the relative position of the second part 1132 and the second beam 112.

[0168] For example, when the second part 1132 is detachably connected to the second snap-fit ​​part 1121, one end of the second connecting part 131 is connected to the second part 1132, and the other end of the second connecting part 131 passes through the wall of the second snap-fit ​​part 1121 and extends beyond the second beam 112. The second mounting part 132 is connected to the end of the second connecting part 131 away from the second part 1132 and is pressed against the second beam 112. At this time, the second mounting part 132 and the second part 1132 are located on both sides of the corresponding wall of the second snap-fit ​​part 1121 and clamp the corresponding wall of the second snap-fit ​​part 1121, thereby fixing the second part 1132 to the second beam 112.

[0169] This embodiment provides some specific structures for the connection between the second part 1132 and the second beam 112. When the second part 1132 is detachably connected to the second snap-fit ​​part 1121, a second connector 13 is also provided so that the second connector 13 is connected to the second part 1132 and presses the second beam 112 against the second part 1132, so as to better fix the second part 1132 to the second beam 112.

[0170] refer to Figure 5 , Figure 7 , Figure 8 In some embodiments, the second part 1132 has a second cavity 11321, the second cavity 11321 is provided with a second reinforcing part 11322, and the second connecting part 131 is connected to the second reinforcing part 11322.

[0171] The second cavity 11321 refers to the spatial structure disposed within the second part 1132. The shape of the second cavity 11321 can be a prism-shaped spatial structure, a cylindrical spatial structure, or a spatial structure of other shapes. The shape of the second cavity 11321 can also be set according to the shape of the second part 1132. The second cavity 11321 can be a spatial structure with one or more openings so that the second cavity 11321 can be connected to the space outside the second part 1132. The second cavity 11321 can also be a closed spatial structure.

[0172] The second reinforcing part 11322 refers to the reinforcing structure provided in the second cavity 11321. The second reinforcing part 11322 can be a prism-shaped structure, a cylindrical structure, a square plate-shaped structure, a triangular plate-shaped structure, or other shaped structures. The second reinforcing part 11322 is connected to the inner wall of the second cavity 11321. The second reinforcing part 11322 can also be connected to the inner wall of the second cavity 11321 by bonding, welding, screwing, or other means. Alternatively, the second part 1132 can be an integral structure, and the second reinforcing part 11322 can be a part of the second part 1132. The material of the second reinforcing part 11322 can include metal, plastic, or other materials.

[0173] A second cavity 11321 is provided in the second part 1132 to reduce the weight of the second part 1132, thereby reducing the weight of the entire adapter 113 and reducing the negative impact that the adapter 113 may have on the weight of the entire battery device 100.

[0174] When a second cavity 11321 is provided in the second part 1132, a second reinforcing part 11322 is provided to improve the strength of the corresponding part of the second part 1132.

[0175] The second connector 13 is connected to the second reinforcing part 11322. The second connector 13 can be connected to the second reinforcing part 11322 by screwing, snapping, riveting or other means. Connecting the second connector 13 to the second reinforcing part 11322 can improve the connection stability between the second connector 13 and the second part 1132.

[0176] The number of second reinforcing parts 11322 can be one, two or more; when the number of second reinforcing parts 11322 is one, one or more second connectors 13 can be connected to the same second reinforcing part 11322; when the number of second reinforcing parts 11322 is two or more, different second connectors 13 can be connected to different second reinforcing parts 11322, or two or more second connectors 13 can be connected to one second reinforcing part 11322.

[0177] For example, when the second part 1132 is detachably connected to the second snap-fit ​​part 1121, the second part 1132 can abut against the wall of the second snap-fit ​​part 1121. At this time, one end of the second connecting part 131 is connected to the second reinforcing part 11322, and the other end of the second connecting part 131 passes through the inner wall of the adjacent second snap-fit ​​part 1121 and extends to the outside of the second beam 112. The second mounting part 132 is connected to the end of the second connecting part 131 away from the second reinforcing part 11322 and is pressed against the second beam 112. At this time, the second mounting part 132 and the second part 1132 are located on both sides of the corresponding wall of the second snap-fit ​​part 1121 and clamp the corresponding wall of the second snap-fit ​​part 1121, thereby fixing the second part 1132 to the second beam 112.

[0178] For example, a cavity can be provided inside the second beam 112, and the second snap-fit ​​part 1121 is formed in the cavity. In this case, the second beam 112 can be formed by bending a sheet material, and the wall surface of the second snap-fit ​​part 1121 is part of the sheet material.

[0179] For example, when the second snap-fit ​​portion 1121 is a groove structure, the second beam 112 can be formed by bending a sheet metal, and a portion of the sheet metal can serve as the wall surface of the second snap-fit ​​portion 1121.

[0180] In this embodiment, a second cavity 11321 is provided in the second part 1132 to reduce the weight of the second part 1132; a second reinforcing part 11322 is provided, and the second connecting part 131 of the second connecting member 13 is connected to the second reinforcing part 11322 to improve the connection stability between the second part 1132 and the second connecting member 13. At the same time, the second reinforcing part 11322 also corresponds to the connection part between the second part 1132 and the second beam 112. In this case, the second reinforcing part 11322 can also improve the strength and stability of the connection part between the second part 1132 and the second beam 112.

[0181] refer to Figure 5 , Figure 7 , Figure 8 In some embodiments, one end of the second connecting portion 131 passes through at least a portion of the second beam 112 along a second direction and extends into the second reinforcing portion 11322; in the second direction, the size of the second reinforcing portion 11322 is greater than or equal to 7.5 mm.

[0182] One end of the second connecting portion 131 passes through at least a portion of the second beam 112 and extends into the second reinforcing portion 11322, so that the second connecting portion 131 can be connected to the second reinforcing portion 11322. At this time, the portion of the second connecting portion 131 extending into the second reinforcing portion 11322 can be riveted to the second reinforcing portion 11322, screwed to the second reinforcing portion 11322, or connected in other ways.

[0183] For example, the second reinforcing part 11322 is provided with a threaded hole, one end of the second connecting part 131 passes through at least a portion of the second beam 112 and extends into the threaded hole, and the portion of the second connecting part 131 located in the threaded hole is threadedly engaged with the threaded hole.

[0184] For example, the second reinforcing part 11322 is provided with a riveting hole, and one end of the second connecting part 131 extends into the riveting hole after passing through at least a portion of the second beam 112. The portion of the second connecting part 131 located in the riveting hole is interference-fitted with the riveting hole to achieve riveting with the second reinforcing part 11322.

[0185] One end of the second connecting part 131 passes through at least a portion of the second beam 112. Depending on the position of the second part 1132 relative to the second beam 112, the second connecting part 131 may completely penetrate the entire second beam 112 or only penetrate a portion of the second beam 112. For example, the second part 1132 is located inside the second beam 112. In this case, the second connecting part 131 may only penetrate one or several plates of the second beam 112 and be connected to the second part 1132, without having to completely penetrate the entire second beam 112.

[0186] The dimension of the second reinforcing part 11322 in the second direction is... Figure 7 As shown in L2, the dimension of the second reinforcing part 11322 in the second direction is greater than or equal to 7.5mm. The dimension of the second reinforcing part 11322 in the second direction can be 7.5mm, or it can be 8mm, 9mm, 10mm, 11mm, 12mm or other values.

[0187] Since one end of the second connecting part 131 extends into the second reinforcing part 11322 along the second direction and is connected to the second reinforcing part 11322, the size of the second reinforcing part 11322 in the second direction is positively correlated with the connection stability of the second connecting part 131. The larger the size of the second reinforcing part 11322 in the second direction, the better the connection stability between the second connecting part 131 and the second reinforcing part 11322.

[0188] Accordingly, the dimension of the second reinforcing part 11322 in the second direction is greater than or equal to 7.5 mm, so that the second connecting part 131 can be connected to the second reinforcing part 11322 more stably, thereby enabling the second connecting member 13 to fix the second part 1132 to the reinforcing rib 1113 more stably, thereby improving the connection stability between the second part 1132 and the second beam 112.

[0189] For example, the second reinforcing part 11322 can have a dimension of 7.5mm in the second direction. In this case, the volume of the second reinforcing part 11322 is small. The second reinforcing part 11322 can improve the connection stability between the second connecting part 131 and the second reinforcing part 11322. The space occupied by the second reinforcing part 11322 is also small, and the weight is also small.

[0190] For example, the second reinforcing part 11322 can have a dimension of 10mm in the second direction. In this case, the second reinforcing part 11322 can better improve the connection stability between the second connecting part 131 and the second reinforcing part 11322, while the space occupation and weight of the second reinforcing part 11322 are also moderate.

[0191] This embodiment provides a range of dimensions for the second reinforcing part 11322 so that the second reinforcing part 11322 can better improve the connection stability between the second part 1132 and the second connector 13.

[0192] refer to Figure 10 In some embodiments, the second reinforcing part 11322 has a dimension greater than or equal to 8 mm in the first direction; and / or, the second reinforcing part 11322 has a dimension greater than or equal to 8 mm in the third direction.

[0193] The size of the second reinforcing part 11322 in the first direction reflects the volume of the second reinforcing part 11322. The size of the second reinforcing part 11322 in the first direction is also positively correlated with the strength of the second reinforcing part 11322. The larger the size of the second reinforcing part 11322 in the first direction, the greater the strength of the second reinforcing part 11322.

[0194] The second reinforcing part 11322 has a dimension of 8 mm or more in the first direction. The dimension of the second reinforcing part 11322 in the first direction may also be 8 mm, 9 mm, 10 mm, 11 mm, 12 mm or other values.

[0195] The first direction can be either the height direction Z of the battery device 100 or the width direction Y of the battery device 100; for example, the first direction is the height direction Z of the battery device 100.

[0196] For example, the second reinforcing part 11322 has a dimension of 8mm in the first direction. In this case, the second reinforcing part 11322 can improve the connection stability between the second connecting part 131 and the second reinforcing part 11322, and the space occupied by the second reinforcing part 11322 is also smaller, and the weight is also smaller.

[0197] The dimensions of the second reinforcing part 11322 in the third direction reflect its volume. The dimensions of the second reinforcing part 11322 in the third direction are also positively correlated with its strength. The larger the dimensions of the second reinforcing part 11322 in the third direction, the greater its strength.

[0198] The dimension of the second reinforcing part 11322 in the third direction is greater than or equal to 8mm. The dimension of the second reinforcing part 11322 in the third direction can also be 8mm, 9mm, 10mm, 11mm, 12mm or other values.

[0199] The third direction can be either the length direction X of the battery device 100 or the width direction Y of the battery device 100; for example, the third direction is the length direction X of the battery device 100.

[0200] For example, the second reinforcing part 11322 has a dimension of 8mm in the third direction. In this case, the second reinforcing part 11322 can improve the connection stability between the second connecting part 131 and the second reinforcing part 11322, and the space occupied by the second reinforcing part 11322 is also smaller, and the weight is also smaller.

[0201] The second reinforcing part 11322 may have a dimension greater than or equal to 8 mm only in the first direction or the third direction, or it may have a dimension greater than or equal to 8 mm in both the first direction and the third direction.

[0202] This embodiment further provides a range of dimensions for the second reinforcing part 11322 so that the second reinforcing part 11322 can better improve the connection stability between the second part 1132 and the second connector 13.

[0203] refer to Figure 11 In some embodiments, the housing 10 further includes a basin 14, at least a portion of which is received in a first receiving cavity 101, and the basin 14 has a second receiving cavity 141 in which the battery cell 20 is received.

[0204] The basin 14 refers to the structure in the housing 10 used to accommodate the battery cell 20. The basin 14 can be a square structure, a circular structure, or a structural component of other shapes. At least a portion of the basin 14 is accommodated in the first accommodating cavity 101. The basin 14 can be partially accommodated in the first accommodating cavity 101 or it can be completely accommodated in the first accommodating cavity 101. When at least a portion of the basin 14 is accommodated in the first accommodating cavity 101, the battery cell assembly and other structures of the battery device 100 can be accommodated in the basin 14. The material of the basin 14 can include metal, plastic, or other materials. The basin 14 can be made by extrusion, stamping, or other methods.

[0205] The second receiving cavity 141 refers to the spatial structure in the basin 14 used to accommodate the battery cell 20 and other structures. The second receiving cavity 141 is formed inside the basin 14. The second receiving cavity 141 can be a prism-shaped spatial structure, a cylindrical spatial structure, or other shapes of spatial structures. The shape of the second receiving cavity 141 can also be set according to the shape of the basin 14.

[0206] The battery cell 20 is housed in the second receiving cavity 141. Since at least a portion of the basin 14 is housed in the first receiving cavity 101, the battery cell 20 is also located in the first receiving cavity 101 at this time. Each battery cell 20 can be fixed and constrained by straps, plates or other structures, or each battery cell 20 can be directly set in the second receiving cavity 141 of the basin 14.

[0207] When at least a portion of the basin 14 is accommodated in the first receiving cavity 101, the frame structure 11 is disposed around the basin 14 on the periphery of the basin 14, and the frame structure 11 can provide protection and support for the periphery of the basin 14.

[0208] With at least a portion of the basin 14 accommodated in the first receiving cavity 101, the basin 14 can be connected to the frame structure 11 by means of adhesive bonding, welding, screwing or other methods.

[0209] For example, the basin 14 is a one-piece structure so that the basin 14 can have better sealing performance.

[0210] The basin 14 may also be provided with a space for accommodating the battery cell 20 or other structures, so that the battery cell 20 or other structures can be accommodated in the space.

[0211] In this embodiment, the housing 10 includes a basin 14, which is disposed within the frame structure 11. The basin 14 provides space for structures such as battery cells and the frame structure 11 provides support and protection for the basin 14.

[0212] In some embodiments, the housing 10 further includes a cover plate that is sealed to the basin 14 and seals the second receiving cavity 141, so that the second receiving cavity 141 is independent of the space outside the housing 10.

[0213] The cover plate refers to the structure in the housing 10 used to close the second receiving cavity 141. The cover plate can be a circular plate structure, a square plate structure, or a plate structure of other shapes. The cover plate can be a flat plate, a basin-shaped structure with circumferential bends, or a structure of other shapes. The cover plate is sealed to the basin 14. The cover plate can be sealed to the basin 14 by adhesive, screwing, or other means. The material of the cover plate can include metal, plastic, or other materials. The material of the cover plate can be the same as or different from the material of the basin 14.

[0214] When the cover plate is closed on the basin 14, the cover plate can cooperate with the basin 14 to form a sealed second receiving cavity 141. At this time, the second receiving cavity 141 is independent of the space outside the box 10, so as to reduce the risk of impurities outside the box 10 entering the second receiving cavity 141.

[0215] When the second receiving cavity 141 is a sealed space, the first receiving cavity 101 may or may not be a sealed space. The first receiving cavity 101 may not be a sealed space. In this case, the frame structure 11 is mainly used to provide support and protection for the periphery of the basin 14. The adapter 113 and the first beam 111, the adapter 113 and the second beam 112, and the first beam 111 and the second beam 112 may be connected without sealing.

[0216] In this embodiment, the second receiving cavity 141 is made independent of the space outside the box 10 to reduce the risk of impurities outside the box 10 entering the second receiving cavity 141.

[0217] In some embodiments, the basin 14 is made of a non-metallic composite material.

[0218] The material of the basin 14 may include only non-metallic composite materials, or it may include other materials when non-metallic composite materials are included; the non-metallic composite materials of the basin 14 may include resin materials, fiber materials or other non-metallic materials.

[0219] Resin materials have the characteristics of corrosion resistance, excellent insulation properties, and good molding processability, while fiber materials have excellent specific strength and specific modulus, excellent mechanical properties, good fatigue performance, and strong processability. When non-metallic composite materials include resin materials and fiber materials, non-metallic composite materials have at least the advantages of light weight, good mechanical properties, good fatigue and impact resistance, good corrosion resistance and durability, good electrical insulation properties, and easy processing and molding.

[0220] When the material of the basin 14 includes non-metallic composite materials, the basin 14 can provide protection and support for the battery cell 20, while also reducing the overall weight of the battery device 100.

[0221] When the material of the basin 14 is different from that of the frame structure 11, the basin 14 can be connected to the frame structure 11 by adhesive, screw or other means.

[0222] In this embodiment, the material of the basin 14 is a non-metallic composite material to reduce the weight of the basin 14, thereby reducing the weight of the entire battery device 100.

[0223] In some embodiments, the battery device 100 includes a housing 10 and battery cells 20.

[0224] The housing 10 includes a frame structure 11, which includes a first receiving cavity 101. The first receiving cavity 101 is disposed through the height direction Z of the battery device 100; the battery cell 20 is accommodated in the first receiving cavity 101.

[0225] The frame structure 11 includes a first beam 111 and a second beam 112 adjacent to the first beam 111. The length direction of the first beam 111 is parallel to the width direction Y of the battery device 100, and the first beam 111 is located on one side of the first receiving cavity 101 along the length direction X of the battery device 100. The length direction of the second beam 112 is parallel to the length direction X of the battery device 100, and the second beam 112 is located on one side of the first receiving cavity 101 along the width direction Y of the battery device 100.

[0226] The first beam 111 and the second beam 112 are connected by a connector 113.

[0227] The adapter 113 includes a first part 1131 and a second part 1132 connected to the first part 1131. The first part 1131 has a first cavity 11311 and a first reinforcing part 11312, which is connected to the inner wall of the first cavity 11311. The second part 1132 has a second cavity 11321, which is connected to the first cavity 11311. The second cavity 11321 has a second reinforcing part 11322, which is connected to the inner wall of the second cavity 11321.

[0228] The first beam 111 has a beam cavity 1112, and the beam cavity 1112 has a reinforcing rib 1113. The reinforcing rib 1113 has a plate-like structure. The length direction of the reinforcing rib 1113 is parallel to the width direction Y of the battery device 100. At least a portion of the first part 1131 extends into the beam cavity 1112 and is located above the reinforcing rib 1113 along the height direction Z of the battery device 100. The first part 1131 is connected to the reinforcing rib 1113 through the first connector 12.

[0229] The first connector 12 includes a first connecting portion 121 and a first mounting portion connected to the first connecting portion 121. The first connecting portion 121 passes through the reinforcing rib 1113 below the height direction Z of the battery device 100 and is screwed to the first reinforcing portion 11312. The first mounting portion is located below the reinforcing rib 1113 below the height direction Z of the battery device 100 and abuts against the reinforcing rib 1113.

[0230] The first beam 111 is also provided with mounting holes 1114. The mounting holes 1114 are located below the first beam 111 along the height direction Z of the battery device 100. The mounting holes 1114 and the first mounting part are correspondingly provided in the height direction Z of the battery device 100.

[0231] At least a portion of the second part 1132 extends into the second beam 112 and abuts against the plate of the second beam 112 away from the first receiving cavity 101. The second part 1132 is connected to the corresponding plate of the second beam 112 via the second connector 13.

[0232] The second connector 13 includes a second connecting portion 131 and a second mounting portion 132 connected to the second connecting portion 131. The second connecting portion 131 passes through the corresponding plate of the second beam 112 along the width direction Y of the battery device 100 away from the first receiving cavity 101 and is screwed to the second reinforcing portion 11322. The second mounting portion 132 is located on the side of the second beam 112 along the width direction Y of the battery device 100 away from the first receiving cavity 101 and abuts against the second beam 112.

[0233] Secondly, embodiments of this application also provide an electrical device, including the battery device 100 provided in some embodiments of the first aspect.

[0234] In this electrical device, in the housing 10 of the battery device 100, the first beam 111 and the second beam 112 of the frame structure 11 are connected by a connector 113, thereby improving the connection efficiency of adjacent beams of the frame structure 11. At the same time, the first beam 111 and the second beam 112 connected by the connector 113 can be made of different materials, so as to set the first beam 111 and the second beam 112 with different materials according to different needs.

[0235] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The box includes a frame structure that encloses a first receiving cavity. The frame structure includes a first beam and a second beam adjacent to the first beam. The frame structure also includes a connector that is detachably connected to the first beam and the second beam, so that the connector, the first beam, and the second beam are detachable from each other. A basin, at least a portion of which is received in the first receiving cavity, and the basin having a second receiving cavity; A cover plate, which is sealed to the basin and seals the second receiving cavity, so that the second receiving cavity is independent of the space outside the box; A single battery cell is housed in the second receiving cavity; The adapter includes a first part and a second part connected to the first part, the first part being connected to the first beam and the second part being connected to the second beam; The first part is connected to the first beam body via a first connector, the first connector including a first connecting part connected to the first part; The first beam has a beam cavity, and a reinforcing rib is provided in the beam cavity. At least a portion of the first part extends into the beam cavity and abuts against the reinforcing rib. The first connecting part passes through the reinforcing rib and is connected to the first part.

2. The battery device according to claim 1, characterized in that, The first beam body is provided with a first snap-fit ​​portion, and the first part is detachably connected to the first snap-fit ​​portion; and / or The second beam is provided with a second snap-fit ​​part, and the second part is detachably connected to the second snap-fit ​​part.

3. The battery device according to claim 2, characterized in that, One end of the first connecting portion along the first direction is connected to a first mounting portion, the first mounting portion presses against the first beam body, and the first beam body is pressed against the first portion.

4. The battery device according to claim 3, characterized in that, The first mounting portion presses against the side of the reinforcing rib opposite to the first portion and presses the reinforcing rib against the first portion, and at least a portion of the first mounting portion is accommodated within the beam cavity.

5. The battery device according to claim 4, characterized in that, The first beam body is provided with a mounting hole that communicates with the beam body cavity, and the mounting hole is provided corresponding to the first mounting part.

6. The battery device according to claim 4, characterized in that, The first part has a first cavity, and the first cavity is provided with a first reinforcing part, which is connected to the inner wall of the first cavity adjacent to the reinforcing rib; One end of the first connecting part passes through the reinforcing rib and is connected to the first reinforcing part.

7. The battery device according to claim 6, characterized in that, One end of the first connecting portion passes through the reinforcing rib along the first direction and extends into the first reinforcing portion; In the first direction, the dimension of the first reinforcing part is greater than or equal to 7.5 mm.

8. The battery device according to claim 2, characterized in that, The second part is connected to the second beam via a second connector; The second connector includes a second connecting portion connected to the second part, and a second mounting portion connected to one end of the second connecting portion along the second direction. The second mounting portion presses against the second beam and presses the second beam against the second part.

9. The battery device according to claim 8, characterized in that, The second part has a second cavity, and a second reinforcing part is provided in the second cavity. The second connecting part is connected to the second reinforcing part.

10. The battery device according to claim 9, characterized in that, One end of the second connecting portion passes through at least a portion of the second beam along the second direction and extends into the second reinforcing portion; In the second direction, the dimension of the second reinforcing part is greater than or equal to 7.5 mm.

11. The battery device according to claim 1, characterized in that, The basin is made of non-metallic composite materials.

12. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-11.

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