A battery device and electrical equipment

Abstract

This application relates to the field of battery technology, and provides a battery device and electrical equipment that can prevent cracking during vibration, and is easy to install with simple procedures. The battery device includes a housing, battery cells, and a bushing. The housing has an internal cavity and includes a structural beam with mounting holes and a connecting groove. The battery cells are housed within the cavity. The bushing includes a main body and a connecting part. The main body has a through hole, and the connecting part extends along the axis of the through hole and corresponds to the connecting groove. When the bushing is connected to the housing, the connecting part is connected to the connecting groove, and the portion of the connecting part within the connecting groove has at least a bent profile structure. The through hole of the main body corresponds to the mounting hole.

Description

Technical Field

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

[0002] When battery devices are used in electrical installations, they are generally connected and secured by mounting. Bushings are provided at the connection points on the casing to facilitate the passage of fasteners, thus simplifying production and assembly.

[0003] In related technologies, the bushing and housing are fixed by adhesive or welding. However, this fixing method is prone to cracking and failure under vibration, and the fixing process requires additional adhesive or welding steps. Utility Model Content

[0004] This application provides a battery device and electrical equipment that can prevent cracking during vibration, and is easy to install with a simple process.

[0005] The first aspect of this application provides a battery device, including a housing, a battery cell, and a bushing. The housing has an internal cavity and includes a structural beam with mounting holes and a connecting groove. The battery cell is housed within the cavity. The bushing includes a main body and a connecting part. The main body has a through hole, and the connecting part extends along the axial direction of the through hole and corresponds to the connecting groove. When the bushing is connected to the housing, the connecting part is connected to the connecting groove, and the portion of the connecting part located in the connecting groove has at least a bent profile structure. The through hole of the main body corresponds to the mounting hole.

[0006] The battery device provided in this application has mounting holes and connecting grooves on the structural beams of the housing, and the connecting part of the bushing can be connected to the connecting groove. When the bushing is connected to the housing, the connecting part is connected in the connecting groove, and the portion of the connecting part located in the connecting groove has at least a bent contour structure. The bent contour structure occupies the remaining space in the connecting groove, so that the connecting part is snapped and fixed in the connecting groove. At the same time, the through hole of the main body corresponds to the mounting hole, ultimately realizing the connection between the bushing and the housing. Due to the design of the connecting part, when the bushing and the housing are connected, they will not directly crack and fail under vibration. At the same time, since the connection between the bushing and the housing is achieved by the deformation of the connecting part, no additional glue or welding is required, further avoiding the problems caused by glue or welding, that is, it is not easy to crack and fail. Moreover, the installation process is simple and does not require additional glue or welding steps.

[0007] In some embodiments of this application, when the liner is connected to the housing, the contour of the connection is different from the contour when the liner is not connected to the housing.

[0008] In this embodiment, the connecting part is connected to the connecting groove through force-induced deformation, and the contour after connection is different from the contour before connection. This change in contour allows the connecting part to be smoothly engaged in the connecting groove. During the connection process between the liner and the housing, the connecting part extends into the connecting groove along the axial direction of the through hole. The connecting part is deformed by the force of the connecting groove, thus occupying other space in the connecting groove, allowing the connecting part to be engaged and fixed in the connecting groove. The contour after connection changes, ultimately achieving the connection between the liner and the housing. Because the connecting part can deform under force, when the liner and housing are connected, the connecting part can deform to a certain extent when subjected to vibration, without directly cracking or failing. During this assembly process, it is mainly necessary to press the liner along the axial direction of the through hole to deform the connecting part within the connecting groove, thus completing the connection and fixing. The installation is simple and does not require additional adhesive or welding processes.

[0009] In some embodiments of this application, when the liner is connected to the housing, the connecting portion is wound along the wall of the connecting groove; the wall of the connecting groove includes a bottom surface facing the main body and a side surface extending along the axial direction of the through hole, and the bottom surface and the side surface at the junction have at least an arcuate surface.

[0010] In this embodiment, the wall of the connecting groove can guide the connecting part to be wound along it. In order to prevent the connecting part from getting stuck during winding, there is at least an arc-shaped surface at the junction of the bottom and side surfaces of the connecting groove so that the connecting part can be smoothly wound along the wall of the connecting groove.

[0011] In some embodiments of this application, the bottom surface is an arc-shaped surface.

[0012] In this embodiment, the entire bottom surface of the connecting groove is set as an arc surface. In this way, the arc surface can have a relatively large curvature, which facilitates the winding of the connecting part and is also relatively smooth when connecting with the side of the connecting groove, and the winding of the connecting part will not get stuck.

[0013] In some embodiments of this application, the bottom surface includes a flat portion and an arc-shaped portion, the flat portion facing the main body portion, and the flat portion connecting with the side surface through the arc-shaped portion.

[0014] In this embodiment, a portion of the bottom surface of the connecting groove is designed as a flat section, and the connection between the bottom surface and the side surface is designed as an arc-shaped section, so that the flat section and the side surface are connected by the arc-shaped section. The flat section allows for a larger internal space in the connecting groove, providing greater deformation space for the connecting part. Furthermore, the arc-shaped connection can also prevent jamming during the winding of the connecting part.

[0015] In some embodiments of this application, the wall of the connecting groove also includes a limiting surface opposite to the bottom surface, and the limiting surface has a limiting protrusion; when the liner is connected to the housing, the connecting part abuts against the limiting protrusion.

[0016] In this embodiment, a limiting protrusion is also provided inside the connecting groove, so that when the connecting part deforms in the connecting groove, the limiting protrusion can further limit the connecting part, making it less likely for the connecting part to come out of the connecting groove, and the connection is more secure.

[0017] In some embodiments of this application, the limiting protrusion has an arcuate surface; when the liner is connected to the housing, the side of the connection near the end fits against the arcuate surface.

[0018] In this embodiment, the limiting protrusion can be an arc-shaped structure with an arc-shaped surface, which facilitates the winding and deformation of the connecting part.

[0019] In some embodiments of this application, the limiting protrusion extends along the axial direction of the through hole; when the bushing is connected to the housing, the end of the connecting part abuts against the limiting protrusion.

[0020] In this embodiment, the limiting protrusion can be a structure that extends along the axis of the through hole. This structure can limit the end of the connecting part to one side of the limiting protrusion, thereby fixing the deformed connecting part in the connecting groove and preventing it from coming out.

[0021] In some embodiments of this application, a material reduction groove is provided on the side of the structural beam away from the main body.

[0022] In this embodiment, a material-reducing groove is provided inside the structural beam, which can reduce the weight of the casing and facilitate lightweight design. At the same time, the material-reducing groove and the connecting groove make the internal structure of the structural beam more stable. When subjected to large vibrations or forces, it can deform and collapse to absorb the force, reducing the risk of the structural beam transmitting force to the battery cells inside the housing.

[0023] In some embodiments of this application, the material reduction groove and the connecting groove are arranged opposite to each other and symmetrically.

[0024] In this embodiment, the material reduction groove and the connecting groove can be symmetrically arranged, so that the structures on both sides of the structural beam are basically the same, and the structural strength is also basically the same, which provides good structural strength support while achieving lightweighting. The symmetrical arrangement can facilitate mold design and workpiece extrusion molding.

[0025] In some embodiments of this application, the material reduction groove is opposite to the connecting groove, and the inner cavity of the material reduction groove extends to cover the area corresponding to the connecting groove.

[0026] In this embodiment, the material reduction groove can cover the entire area corresponding to the connecting groove, further enhancing the effect of lightweight design.

[0027] In some embodiments of this application, the structural beam has a notch that is radially recessed along the through hole at the connection between the connecting groove and the material reduction groove.

[0028] In this embodiment, an inwardly recessed notch is provided between the connecting groove and the material reduction groove. When the battery device is subjected to vibration or large lateral forces, the structural beam can collapse from the notch to achieve a certain degree of deformation. This avoids the risk of the structural beam transmitting the force to the battery cells in the cavity, making the battery cells less likely to catch fire and providing safety for the battery cells.

[0029] In some embodiments of this application, the notch is annular.

[0030] In this embodiment, the notch can be an annular structure set around the connection between the connecting groove and the material reduction groove of the structural beam, so that the structural beam can achieve collapse deformation when subjected to lateral force from any direction, or even break off from the connection between the connecting groove and the material reduction groove, so as to absorb the force and avoid the force being transmitted to the battery cells in the cavity.

[0031] In some embodiments of this application, when the liner is attached to the housing, the connection includes at least a first portion that curls toward the side away from the mounting hole.

[0032] In this embodiment, when the liner is connected to the connecting groove of the housing, the curling deformation that occurs can curl away from the mounting hole, thereby avoiding the position of the mounting hole and facilitating the design of the connecting groove.

[0033] In some embodiments of this application, when the liner is connected to the housing, the connection includes at least a second portion that is rolled toward the side near the mounting hole and is positioned away from the mounting hole.

[0034] In this embodiment, when the liner is connected to the connecting groove of the housing, its curling deformation can also curl towards the side closer to the mounting hole. Furthermore, the second part after curling needs to be positioned away from the mounting hole. Curling the connecting part towards the side closer to the mounting hole allows the card to receive force closer to the center of the through hole, improving the stability of the connection. Additionally, when setting the curling method, the connecting part can be flexibly set to curl inwards or outwards according to actual needs to adapt to different application scenarios.

[0035] In some embodiments of this application, the connecting portion includes at least one fin extending along the axial direction of the through hole, and the fin has a plate-like structure.

[0036] In this embodiment, the connecting portion includes at least one fin, which is deformable and connects to the connecting groove. To facilitate the connection of the fins and ensure a certain connection strength, the fins are plate-shaped structures. Furthermore, the plate-shaped structure provides sufficient strength and is easy to roll from the two wide sides of the plate, facilitating deformation.

[0037] In some embodiments of this application, at least one fin has a rectangular cross-section.

[0038] In this embodiment, the cross-section of the fin can be rectangular, meaning the fin thickness can be uniform. This allows for more uniform stress distribution at the bending points during fin curling, facilitating curling. Furthermore, rectangular cross-section fins are easier to manufacture, and consistent structure and strength are readily achievable.

[0039] In some embodiments of this application, the thickness of the fins along the radial direction of the through hole ranges from 0.5 to 20 mm.

[0040] In this embodiment, a fin thickness that is too small results in weak connection strength, making it easy to curl but prone to connection failure; a fin thickness that is too large results in strong connection strength, but makes curling more difficult and requires greater force to achieve deformation. Therefore, after verification, a fin thickness between 0.5 and 20 mm can provide sufficient connection strength and make curling deformation relatively easy to achieve.

[0041] In some embodiments of this application, at least one fin has a fan-shaped cross-section.

[0042] In this embodiment, the cross-section of the fin can also be fan-shaped. The fan-shaped structure makes full use of the space available in the main body, making the fin components on the main body more flexible and adaptable.

[0043] In some embodiments of this application, the arc surface of the fan-shaped fin is coaxially arranged with the through hole.

[0044] In this embodiment, the arc surface of the fan-shaped fin and the through hole are made coaxial, which facilitates processing and makes the fin layout more convenient.

[0045] In some embodiments of this application, the connecting portion includes at least two fins, the connecting groove includes at least two, and the connecting groove and the fin are arranged in a one-to-one correspondence, with at least two fins arranged around the axis of the through hole.

[0046] In this embodiment, the connecting part may include at least two fins, and correspondingly, the connecting groove on the structural beam may also include at least two. The number and position of the connecting groove and the fins may correspond one-to-one, so that each fin can be connected to the corresponding connecting groove. At the same time, when at least two fins are provided, the fins can be arranged around the axis of the through hole, which facilitates the layout and enables the main body to be connected to the fixed box through at least two different positions, providing connection stability.

[0047] In some embodiments of this application, at least two fins are evenly distributed along the circumference of the through hole.

[0048] In this embodiment, at least two fins can be evenly distributed along the circumference of the through hole, thereby providing connections at different positions in the circumferential direction of the main body, so that the connection is subjected to uniform force.

[0049] In some embodiments of this application, at least two fins are arranged symmetrically with respect to the axis of the through hole.

[0050] In this embodiment, at least two fins are provided, which are symmetrically arranged along the axis of the through hole, so that the two fins are evenly distributed in the circumference and are symmetrical in shape and position. Therefore, when the fins are connected to the connecting groove, the magnitude and position of the force on the main body tend to be uniform, which further improves the stability of the connection.

[0051] In some embodiments of this application, the connecting portion includes four fins, with two fins forming a group, the fins in the same group being stacked radially along the through hole, and the fins in different groups being evenly distributed circumferentially along the through hole.

[0052] In this embodiment, there can be four fins. Two fins form a group, and fins in different groups can be distributed circumferentially along the through-hole. Fins in the same group can be stacked radially along the through-hole. This combination of radial stacking and circumferential distribution makes the distribution of the four fins more rational and increases the connection strength. Furthermore, within each group, the two stacked fins can be rolled inwards and outwards respectively during curling to avoid each other and facilitate deformation.

[0053] In some embodiments of this application, the thickness of the main body is greater than the thickness of the connecting part along the radial direction of the through hole, or the material strength of the main body is greater than the material strength of the connecting part.

[0054] In this embodiment, the main body needs to limit and support the fasteners, requiring a certain strength, while the connecting part needs to withstand deformation under stress. Therefore, the strength requirement for the connecting part is lower than that of the main body. Thus, the thickness of the main body can be greater than the thickness of the connecting part along the radial direction of the through hole, or the material strength of the main body can be greater than that of the connecting part. In other words, different thicknesses can be achieved through structural design or by using different materials to achieve different strengths.

[0055] In some embodiments of this application, the main body and the connecting part are integrally formed as a whole.

[0056] In this embodiment, the main body and the connecting part are integrally formed into a single component. In other words, the entire bushing kit is a complete single component, which facilitates assembly, reduces processes, and makes manufacturing easier.

[0057] In some embodiments of this application, when the liner is connected to the housing, the connecting part is connected in the connecting groove, and the main body is located on one side of the structural beam.

[0058] In this embodiment, when the liner is connected to the housing, the main body is located on one side of the structural beam and will not enter the mounting hole. This reduces interference with the mounting hole and also reduces the lateral force exerted on the structural beam of the housing when the main body is under stress, which helps protect the battery cells inside the housing.

[0059] In some embodiments of this application, the box includes multiple side frames and inner beams, the side frames enclosing a receiving cavity, the inner beams connecting at least two side frames, and the structural beams being at least one of the side frames and inner beams.

[0060] In this embodiment, the lining kit can be set at multiple locations on the box body where mounting holes can be set. For example, the structural beam is at least one of the frame and the inner beam. That is to say, the mounting holes, connecting grooves, and corresponding lining kits can all be set on at least one of the frame and the inner beam, making the application range of the lining kit wider and facilitating the overall layout of the box body.

[0061] A second aspect of this application provides an electrical device, including the battery device of the first aspect, the battery device being used to provide electrical energy.

[0062] The electrical equipment provided in this application, since it includes the battery device of the first aspect, has the same technical effect, namely, it can prevent cracking during vibration and is easy to install with simple procedures. Attached Figure Description

[0063] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0064] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0065] Figure 1 This is a schematic diagram of the structure of a vehicle as the electrical equipment in an embodiment of this application;

[0066] Figure 2 This is a schematic diagram of the battery device according to an embodiment of this application;

[0067] Figure 3 This is a structural diagram of a structural beam of the battery device housing according to an embodiment of this application;

[0068] Figure 4 This is one of the structural schematic diagrams of the battery device bushing according to an embodiment of this application;

[0069] Figure 5 This is a three-dimensional structural diagram of the connecting part of the battery device bushing according to an embodiment of this application after deformation.

[0070] Figure 6 This is a schematic cross-sectional view of the battery device according to an embodiment of this application before the bushing is connected to the structural beam;

[0071] Figure 7 This is one of the schematic cross-sectional views of the battery device according to an embodiment of this application after the bushing is connected to the structural beam;

[0072] Figure 8 This is a second schematic diagram of the cross-sectional structure of the battery device according to an embodiment of this application, after the bushing is connected to the structural beam.

[0073] Figure 9 This is a second schematic diagram of the structure of the battery device bushing according to an embodiment of this application;

[0074] Figure 10 This is a schematic diagram of the structure of the connecting part of the battery device bushing in an embodiment of this application, which curls toward the through hole when deformed.

[0075] Figure 11 This is a schematic cross-sectional view of the battery device bushing assembly according to an embodiment of this application, showing the connection portion curling towards the through hole after it is connected to the structural beam.

[0076] Figure 12 One of the bottom view schematic diagrams of the connecting part of the battery device bushing assembly according to an embodiment of this application is a plate-shaped structure;

[0077] Figure 13 The second bottom view of the battery device bushing assembly according to an embodiment of this application shows that the connecting part of the bushing is a plate-shaped structure.

[0078] Figure 14 The diagram shows a bottom view of the connecting part of the battery device bushing in an embodiment of this application, which is a fan-shaped structure.

[0079] Figure 15A bottom view of the structure of the connecting part of the battery device bushing according to an embodiment of this application, showing four fins;

[0080] Figure 16 The diagram shows a front view of the battery device bushing assembly with four fins as an embodiment of this application.

[0081] Figure 17 The battery device according to an embodiment of this application has four fins in the connecting part of the bushing assembly, and is shown in the front view of the structure after the fins are deformed.

[0082] Figure 18 The schematic diagram of the cross-sectional structure of the connecting part of the battery device bushing in this embodiment of the application has four fins and is connected to the structural beam.

[0083] Explanation of reference numerals in the attached figures:

[0084] 1000 - Electrical equipment; 100 - Battery device; 200 - Controller; 300 - Motor; 110 - Housing; 111 - First housing section; 112 - Second housing section; 120 - Battery cell; 1 - Structural beam; 11 - Mounting hole; 12 - Connecting groove; 121 - Bottom surface; 1211 - Flat section; 1212 - Arc-shaped section; 122 - Side surface; 123 - Limiting surface; 124 - Limiting protrusion; 13 - Material reduction groove; 14 - Notch; 2 - Liner kit; 21 - Main body section; 211 - Through hole; 22 - Connecting section; 3 - Receiving cavity. Detailed Implementation

[0085] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0086] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0087] 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.

[0088] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0089] 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.

[0090] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0091] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0092] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0093] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0094] The following is a detailed description of this application.

[0095] In battery devices of this technology, a bushing is installed at the mounting point of the casing, and the bushing is fixed to the casing by adhesive or welding. However, this fixing method is prone to cracking and failure under vibration. In actual production, tearing and detachment have been observed during vibration tests. Moreover, since the bushing is not directly mounted on the corresponding equipment when it is installed on the casing, the fixing between the bushing and the casing also requires a certain strength. The adhesive or welding methods in this technology require an additional adhesive or welding step after the bushing is installed at the mounting hole of the casing to complete the assembly, making the process relatively complex.

[0096] This application discloses a battery device 100 and an electrical device 1000, which can prevent cracking during vibration and are easy to install with simple procedures.

[0097] The electrical device 1000 disclosed in this application can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, vehicles, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0098] The battery device 100 disclosed in this application embodiment can be used in electrical equipment 1000 that uses batteries as power sources, or as energy storage devices, wherein energy storage devices include energy storage containers, energy storage cabinets, etc.

[0099] In the following embodiments, for ease of explanation, an example of an electrical device 1000 according to an embodiment of this application is a vehicle.

[0100] Figure 1 The diagram illustrates the structure of a vehicle as provided in some embodiments of this application. The vehicle 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 vehicles, etc. Figure 1 As shown, a battery device 100 is installed inside the vehicle. The battery device 100 can be located at the bottom, front, or rear of the vehicle. The battery device 100 can be used to power the vehicle; for example, the battery device 100 can serve as the vehicle's operating power source. The vehicle may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle during starting, navigation, and driving.

[0101] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0102] Figure 2 This is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 mentioned in the embodiments of this application may also include one or more battery cell assemblies (not shown in the figure, please refer to the combination of multiple battery cells 120) for providing voltage and capacity. A battery cell assembly may include multiple battery cells 120, which are connected in series, parallel, or mixed connection through a busbar.

[0103] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells 120.

[0104] As an example, a battery cell assembly can be a battery module, which consists of multiple battery cells 120 arranged and fixed to form an independent module.

[0105] As an example, a battery module can be formed by bundling multiple battery cells 120 together with cable ties.

[0106] In some embodiments, such as Figure 2 As shown, the battery device 100 can be a battery pack, which includes a housing 110 and one or more battery cell assemblies, the battery cell assemblies being housed within a housing cavity 3.

[0107] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the receiving cavity 3 by fixing the battery module in the receiving cavity 3.

[0108] As an example, the battery cell assembly can also be housed in the housing cavity 3 by directly fixing multiple battery cells 120 within the housing cavity 3.

[0109] As an example, such as Figure 2 As shown, the housing 110 may include a first housing portion 111 and a second housing portion 112. The first housing portion 111 and the second housing portion 112 are fastened together, forming a closed space inside the housing 110, namely the receiving cavity 3, to house the battery cell assembly. Here, "closed" refers to covering or closing, which can be either sealed or unsealed. The first housing portion 111 may be a top cover or a bottom plate.

[0110] In some embodiments, the housing 110 may be part of the vehicle's chassis structure. For example, a portion of the housing 110 may be at least a portion of the vehicle's floor, or a portion of the housing 110 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0111] In this embodiment of the application, the battery cell 120 can be a secondary battery. A secondary battery refers to a battery cell 120 that can be used again after being discharged by recharging to activate the active materials.

[0112] The battery cell 120 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0113] Additionally, by way of example, the battery cell 120 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells, such as hexagonal prismatic battery cells. There are no particular limitations in the embodiments of this application.

[0114] Reference Figure 2 This application provides a battery device 100, including a housing 110, a battery cell 120, and a reference. Figure 3 It also includes a liner 2, wherein the interior of the housing 110 forms a receiving cavity 3, as shown in the reference. Figure 3 Box 110 includes structural beam 1, as shown in the reference. Figure 4 , Figure 5 , Figure 6 and Figure 7 The structural beam 1 is provided with a mounting hole 11 and a connecting groove 12; the liner 2 includes a main body 21 and a connecting part 22. The main body 21 has a through hole 211, and the connecting part 22 extends along the axial direction of the through hole 211 and is correspondingly provided with the connecting groove 12; the battery cell 120 is housed in the receiving cavity 3; when the liner 2 is connected to the housing 110, the connecting part 22 is connected in the connecting groove 12, and the part of the connecting part 22 located in the connecting groove 12 has at least a bent profile structure, and the through hole 211 of the main body 21 corresponds to the mounting hole 11.

[0115] Among them, structural beam 1 refers to a structure with a certain structural strength that can be equipped with mounting holes 11, which can be the frame of box 110, expansion beam, middle connecting beam, etc.

[0116] The fact that the connecting part 22 extends along the axial direction of the through hole 211 means that the connecting part 22 has an extension along the axial direction, which facilitates its insertion into the connecting groove 12 to deform and connect.

[0117] The connection part 22 is provided in correspondence with the connection groove 12, which means that when the connection part 22 is connected to the housing 110, it can correspond to the connection groove 12 on the housing 110, based on the position when it is installed on the housing 110.

[0118] The portion of the connecting part 22 located within the connecting groove 12 has at least a bent profile structure, meaning that the connecting part 22 can deform under force. When it is connected to the connecting groove 12, it will be subjected to the reaction force of the connecting groove 12, causing it to deform within the connecting groove 12. This deformation includes, but is not limited to, bending, curling, and folding. In other words, the bent profile structure can include at least one of bending, curling, and folding. This deformation can cause the connecting part 22 to extend in some directions, thereby achieving its connection with the connecting groove 12.

[0119] The battery device 100 provided in this application has a mounting hole 11 and a connecting groove 12 on the structural beam 1 of the housing 110. The connecting part 22 of the bushing 2 can be connected to the connecting groove 12. When the bushing 2 is connected to the housing 110, the connecting part 22 is connected in the connecting groove 12, and the portion of the connecting part 22 located in the connecting groove 12 has at least a bent profile structure. The bent profile structure occupies the remaining space in the connecting groove 12, so that the connecting part 22 is snapped and fixed in the connecting groove 12. At the same time, the through hole 211 of the main body 21 corresponds to the mounting hole 11, and finally the connection between the bushing 2 and the housing 110 is realized. Due to the setting of the connecting part 22, when the bushing 2 and the housing 110 are connected, they will not directly crack and fail when subjected to vibration. Meanwhile, since the connection between the liner 2 and the housing 110 is achieved by the deformation of the connecting part 22, no additional glue or welding is required, which further avoids the problems caused by glue or welding. That is, it is not easy to crack or fail. Moreover, the installation is simple during this assembly process and no additional glue or welding process is required.

[0120] It should be noted that after the connecting part 22 is connected to the connecting groove 12, it undergoes deformation and becomes fixed within the connecting groove 12. This deformation may not return to its pre-connection state and can be irreversible. Furthermore, after connection, the connecting part 22 remains in its deformed state within the connecting groove 12, thus achieving a normal connection and fixation. In some embodiments of this application, reference is made to... Figure 6 and Figure 7 When the liner 2 is connected to the housing 110, the outline of the connecting part 22 is different from the outline when the liner 2 is not connected to the housing 110.

[0121] In this embodiment, the connecting part 22 is connected to the connecting groove 12 by force-induced deformation, and the contour after connection is different from the contour before connection. The change in contour allows the connecting part 22 to be smoothly engaged in the connecting groove 12. During the connection process between the liner 2 and the housing 110, the connecting part 22 extends into the connecting groove 12 along the axial direction of the through hole 211. The connecting part 22 is subjected to the force of the connecting groove 12 and can deform, thereby occupying other space in the connecting groove 12, so that the connecting part 22 is engaged and fixed in the connecting groove 12. The contour after connection has changed, and finally the connection between the liner 2 and the housing 110 is realized. Since the connecting part 22 can deform under force, when the liner 2 and the housing 110 are connected, the connecting part 22 can undergo a certain deformation when subjected to vibration, without directly cracking and failing. In this assembly process, it is only necessary to press the liner 2 along the axial direction of the through hole 211 to deform the connecting part 22 in the connecting groove 12 to complete the connection and fixation. The installation action is simple and does not require additional adhesive or welding processes.

[0122] The deformation of the connecting part 22 within the connecting groove 12 includes, but is not limited to, bending, curling, folding, etc. As long as the deformation allows the deformed shape of the connecting part 22 to be snapped and fixed within the connecting groove 12, these embodiments are all within the protection scope of this application.

[0123] To make the deformation of the connecting portion 22 within the connecting groove 12 more regular and easier to engage, in some embodiments of this application, reference is made to... Figure 7 When the liner 2 is connected to the housing 110, the connecting part 22 is wound along the wall of the connecting groove 12; the wall of the connecting groove 12 includes a bottom surface 121 facing the main body 21 and a side surface 122 extending along the axial direction of the through hole 211, and the bottom surface 121 and the side surface 122 have at least an arcuate surface at the junction.

[0124] Wherein, the connecting part 22 is wound along the wall of the connecting groove 12; means that during the deformation of the connecting part 22 in the connecting groove 12, the wall of the connecting groove 12 can guide the winding of the connecting part 22.

[0125] The bottom surface 121 and the side surface 122 of the connecting groove 12 refer to the bottom of the connecting part 22 that first contacts the wall surface of the connecting groove 12, and the side wall that constitutes the connecting groove 12, the bottom of which is connected to the side wall to form the connecting groove 12.

[0126] The arc-shaped surface refers to the structural surface with an arc-shaped curve inside the connecting groove 12. Its surface curve is relatively smooth, which can smoothly connect walls in different directions without dead corners, and facilitates the deformation of the connecting part 22 along it without jamming.

[0127] The junction of the bottom surface 121 and the side surface 122 must have at least an arc-shaped surface. This means that an arc-shaped surface must be provided at the junction of the bottom surface 121 and the side surface 122 within the connecting groove 12 to avoid dead angles at the junction, which would be detrimental to the curling of the connecting part 22. While an arc-shaped surface is provided at the junction of the bottom surface 121 and the side surface 122 within the connecting groove 12, other locations within the connecting groove 12 may or may not have arc-shaped surfaces, and the size and number of arc-shaped surfaces are not limited in this embodiment.

[0128] In this embodiment, the wall of the connecting groove 12 can guide the connecting part 22 to be wound along it. In order to prevent the connecting part 22 from getting stuck during winding, at least an arc-shaped surface is provided at the junction of the bottom surface 121 and the side surface 122 of the connecting groove 12 so that the connecting part 22 can be smoothly wound along the wall of the connecting groove 12.

[0129] Based on the provision of an arc-shaped surface at the junction of the bottom surface 121 and the side surface 122 within the connecting groove 12, two implementation methods are exemplified. In some embodiments of this application, refer to... Figure 7 The bottom surface 121 is an arc surface.

[0130] In this embodiment, the entire bottom surface 121 of the connecting groove 12 is set as an arc surface. In this way, the arc surface can have a relatively large curvature, which facilitates the winding of the connecting part 22 and is also relatively smooth when connecting with the side surface 122 of the connecting groove 12, so that the winding of the connecting part 22 will not get stuck.

[0131] It should be noted that in this embodiment, the bottom surface 121 is an arc-shaped surface, and the cross-sectional shape inside the connecting groove 12 can be set to a circle or an ellipse.

[0132] In other embodiments of this application, reference is made to Figure 8 The bottom surface 121 includes a flat portion 1211 and an arc-shaped portion 1212. The flat portion 1211 faces the main body portion 21, and the flat portion 1211 is connected to the side surface 122 through the arc-shaped portion 1212.

[0133] The flat portion 1211 refers to the portion of the bottom surface 121 of the connecting groove 12 that has a flat surface.

[0134] The arc-shaped portion 1212 refers to the part of the bottom surface 121 of the connecting groove 12 that has an arc-shaped surface. The flat portion 1211 and the arc-shaped portion 1212 can be connected to each other to jointly form the bottom surface 121 of the connecting groove 12.

[0135] In this embodiment, a portion of the bottom surface 121 of the connecting groove 12 is configured as a flat portion 1211, and the connection between the bottom surface 121 and the side surface 122 is configured as an arc-shaped portion 1212, so that the flat portion 1211 and the side surface 122 are connected by the arc-shaped portion 1212. The configuration of the flat portion 1211 makes the internal space of the connecting groove 12 larger, providing a larger deformation space for the connecting portion 22. Furthermore, the connection of the arc-shaped portion 1212 can also prevent the connecting portion 22 from getting stuck when it is wound.

[0136] It should be noted that, in this embodiment, the bottom surface 121 includes a flat portion 1211 and an arc-shaped portion 1212. The cross-sectional shape inside the connecting groove 12 can be set to an approximately rectangular structure, and an arc-shaped portion 1212 with rounded transitions is provided at the four corners of the rectangle.

[0137] In some embodiments of this application, reference is made to Figure 7 and Figure 8 The wall of the connecting groove 12 also includes a limiting surface 123 opposite to the bottom surface 121, and the limiting surface 123 has a limiting protrusion 124; when the liner 2 is connected to the housing 110, the connecting part 22 abuts against the limiting protrusion 124.

[0138] The limiting surface 123 refers to the wall surface opposite the bottom surface 121 of the connecting groove 12, which can limit the deformed connecting part 22 from dislodging from the connecting groove 12. That is to say, the connecting groove 12 has a hole on the side facing the bushing 2, through which the connector can pass. The space inside the connecting groove 12 is larger than the coverage area of ​​the hole. Thus, the deformed connecting part 22 inside the connecting groove 12 will be limited within the connecting groove 12. The limiting surface is the wall surface opposite the bottom surface 121 of the connecting groove 12, i.e., the limiting surface 123.

[0139] The limiting protrusion 124 refers to a structure provided on the limiting surface 123 of the connecting groove 12 that protrudes toward the inside of the connecting groove 12. This structure can limit the deformation position and space of the connecting part 22 in the connecting groove 12 and provide further limiting.

[0140] The connection part 22 and the limiting protrusion 124 are engaged and abutted, which means that at least a part of the connection part 22 abuts against the limiting protrusion 124, which can be the side of the connection part 22 or the end of the connection part 22.

[0141] In this embodiment, a limiting protrusion 124 is also provided inside the connecting groove 12, so that when the connecting part 22 deforms in the connecting groove 12, the limiting protrusion 124 can further limit the connecting part 22, making it difficult for the connecting part 22 to come out of the connecting groove 12, and the connection is more secure.

[0142] The limiting protrusion 124 can be configured in various ways. In some embodiments of this application, refer to... Figure 7 The limiting protrusion 124 has an arc-shaped surface; when the liner 2 is connected to the housing 110, the side 122 of the connecting part 22 near the end fits against the arc-shaped surface.

[0143] In this embodiment, the limiting protrusion 124 can be an arc-shaped structure with an arc-shaped surface, which facilitates the winding and deformation of the connecting part 22.

[0144] It should be noted that when the limiting protrusion 124 is an arc-shaped structure, it can be adapted to the overall shape of the connecting groove 12. For example, the curvature of its arc surface is consistent with the curvature of the arc surface at other positions of the connecting groove 12. This facilitates production and processing, and the deformation of the connecting part 22 is smooth.

[0145] In other embodiments of this application, reference is made to Figure 8 The limiting protrusion 124 extends along the axial direction of the through hole 211; when the bushing 2 is connected to the housing 110, the end of the connecting part 22 abuts against the limiting protrusion 124.

[0146] In this embodiment, the limiting protrusion 124 can be a structure that extends along the axis of the through hole 211. This structure can limit the end of the connecting part 22 to one side of the limiting protrusion 124, thereby fixing the deformed connecting part 22 in the connecting groove 12 and preventing it from coming out.

[0147] In some embodiments of this application, reference is made to Figure 7 and Figure 8 A material reduction groove 13 is provided on the side of the structural beam 1 away from the main body 21.

[0148] The material reduction groove 13 refers to a groove structure provided on the structural beam 1 of the box body 110. It can be a hollow part formed inside the box body 110, or it can be formed by reducing the material used inside the structural beam 1. Moreover, there must be some solid frame structure inside the structural beam 1 to form the material reduction groove 13 or the hollow part.

[0149] In this embodiment, a material reduction groove 13 is provided inside the structural beam 1, which can reduce the weight of the housing 110 and facilitate the lightweight design of the housing 110. At the same time, the provision of the material reduction groove 13 and the connecting groove 12 makes the internal structure of the structural beam 1 more stable. When subjected to large vibrations or forces, it can deform and collapse to absorb the force, reducing the risk caused by the structural beam 1 transmitting the force to the battery cells 120 in the housing cavity 3.

[0150] In some embodiments of this application, reference is made to Figure 7 The material reduction groove 13 and the connecting groove 12 are arranged opposite to each other and symmetrically.

[0151] The terms "relative and symmetrical" mean that the material reduction groove 13 and the connecting groove 12 are positioned relatively correspondingly on different sides of the structural beam 1, and their shapes are also symmetrical.

[0152] In this embodiment, the material reduction groove 13 and the connecting groove 12 can be symmetrically arranged, so that the structures on both sides of the structural beam 1 are basically the same, and the structural strength is also basically the same, which provides good structural strength support while achieving lightweight. The symmetrical arrangement can facilitate the design of the mold and the extrusion molding of the workpiece.

[0153] In some embodiments of this application, reference is made to Figure 8 The material reduction groove 13 is opposite to the connecting groove 12, and the extension range of the inner cavity of the material reduction groove 13 covers the area corresponding to the connecting groove 12.

[0154] The fact that the inner cavity of the material reduction groove 13 extends to cover the area corresponding to the connecting groove 12 means that the material reduction groove 13 is completely hollowed out within the area corresponding to the connecting groove 12.

[0155] In this embodiment, the material reduction groove 13 can cover the entire area corresponding to the connecting groove 12, further enhancing the effect of lightweight design.

[0156] In some embodiments of this application, reference is made to Figure 7 The structural beam 1 has a notch 14 that is radially recessed along the through hole 211 at the connection between the connecting groove 12 and the material reduction groove 13.

[0157] The notch 14 that is radially recessed along the through hole 211 means that the notch 14 extends radially along the through hole 211 toward the interior of the connection between the connecting groove 12 and the material reduction groove 13, similar to an easy-tear opening provided at the connection between the two.

[0158] In this embodiment, an inwardly recessed notch 14 is provided between the connecting groove 12 and the material reduction groove 13, so that when the battery device 100 is subjected to vibration or large lateral force, the structural beam 1 can collapse from the notch 14 to achieve a certain degree of deformation, thereby avoiding the risk caused by the structural beam 1 transmitting the force to the battery cell 120 in the receiving cavity 3. The battery cell 120 is not easy to catch fire, thus providing safety for the battery cell 120.

[0159] In some embodiments of this application, the notch 14 may be annular.

[0160] In this embodiment, the notch 14 can be an annular structure set around the connection of the connecting groove 12 and the material reduction groove 13 of the structural beam 1, so that the structural beam 1 can achieve collapse deformation when subjected to lateral force from any direction, or even break from the connection of the connecting groove 12 and the material reduction groove 13, so as to absorb the force and avoid the force being transmitted to the battery cell 120 in the receiving cavity 3.

[0161] When the liner 2 is connected to the housing 110, the deformation of the connecting part 22 can be either winding or curling. Based on this, there are various ways to achieve the curling direction of the connecting part 22 during deformation.

[0162] In some embodiments of this application, reference is made to Figure 4 , Figure 5 and Figure 7 When the liner 2 is connected to the housing 110, the connecting part 22 includes at least a first part that curls toward the side away from the mounting hole 11.

[0163] The first part refers to a component included within the connecting portion 22, which is the curled portion of the connecting portion 22. The connecting portion 22 may be entirely curled, or a portion connected to the main body 21 may remain undeformed. In an embodiment where the connecting portion 22 is entirely curled, the first part refers to the entire connecting portion 22; in an embodiment where a portion of the connecting portion 22 connected to the main body 21 remains undeformed, the first part refers only to the curled portion of the connecting portion 22.

[0164] In this embodiment, when the liner 2 is connected to the connecting groove 12 of the housing 110, the curling deformation that occurs can curl away from the mounting hole 11, thereby avoiding the position of the mounting hole 11, which facilitates the design of the connecting groove 12.

[0165] In some embodiments of this application, reference is made to Figure 9 , Figure 10 and Figure 11 When the liner 2 is connected to the housing 110, the connecting part 22 includes at least a second part that is rolled up toward the side near the mounting hole 11 and is positioned away from the mounting hole 11.

[0166] The second part, similar in scope to the first part, refers to a component contained within the connecting portion 22. It is the curled portion of the connecting portion 22, which can be entirely curled or a portion connected to the main body 21 that remains undeformed. In this embodiment, the second part curls towards the side closest to the mounting hole 11, which differs from the outward curl of the first part. Therefore, for ease of distinction, it is defined as the second part in this embodiment.

[0167] The second part after winding is set to avoid the mounting hole 11. This means that after the second part is deformed along the axial direction of the mounting hole 11, it will not interfere with the mounting hole 11 and will not affect the subsequent fasteners connected in the mounting hole 11.

[0168] In this embodiment, when the liner 2 is connected to the connecting groove 12 of the housing 110, its curling deformation can also curl towards the side closer to the mounting hole 11. Furthermore, the second part after curling needs to be positioned away from the mounting hole 11. The curling of the connecting part 22 towards the side closer to the mounting hole 11 makes the force on the card closer to the center of the through hole 211, thus improving the stability of the connection. In addition, when setting the curling method, the inward or outward curling of the connecting part 22 can be flexibly set according to actual needs to adapt to different application scenarios.

[0169] There are various ways to implement the connecting part 22. Its shape can be cylindrical, plate-shaped, irregular, etc. Among them, the plate-shaped structure can take into account the strength of the winding deformation. In other words, the plate-shaped structure can provide sufficient strength by controlling the width and thickness, and can also be easily wound by the wide surface.

[0170] In some embodiments of this application, reference is made to Figure 4 The connecting part 22 includes at least one fin extending along the axial direction of the through hole 211, and the fin has a plate-like structure.

[0171] Among them, the plate-like structure refers to the structure in which the fins are entirely plate-like, with a certain thickness and two opposite wide surfaces.

[0172] In this embodiment, the connecting portion 22 includes at least one fin, which is deformable and connects to the connecting groove 12. To facilitate the connection of the fins and ensure a certain connection strength, the fins are plate-shaped structures. Furthermore, the plate-shaped structure provides sufficient strength and is easy to roll from its two wide surfaces, facilitating deformation.

[0173] Based on the plate-like structure of the fins, the cross-section of the fins can be implemented in various ways. In some embodiments of this application, refer to... Figure 4 , Figure 12 and Figure 13 At least one fin has a rectangular cross-section.

[0174] In this embodiment, the cross-section of the fin can be rectangular, meaning the fin thickness can be uniform. This allows for more uniform stress distribution at the bending points during fin curling, facilitating curling. Furthermore, rectangular cross-section fins are easier to manufacture, and consistent structure and strength are readily achievable.

[0175] In some embodiments of this application, reference is made to Figure 12 and Figure 13 The thickness M of the fin along the radial direction of the through hole 211 ranges from 0.5 to 20 mm.

[0176] In this embodiment, a fin thickness that is too small results in weak connection strength, making it easy to curl but prone to connection failure; a fin thickness that is too large results in strong connection strength, but makes curling more difficult and requires greater force to achieve deformation. Therefore, after verification, a fin thickness between 0.5 and 20 mm can provide sufficient connection strength and make curling deformation relatively easy to achieve.

[0177] In other embodiments of this application, reference is made to Figure 14 At least one fin has a fan-shaped cross-section.

[0178] In this embodiment, the cross-section of the fin can also be fan-shaped. The fan-shaped structure makes full use of the space available for the main body 21, making the fin components on the main body 21 more flexible and adaptable.

[0179] In some embodiments of this application, reference is made to Figure 14 The arc surface of the fan-shaped fin is coaxially arranged with the through hole 211.

[0180] In this embodiment, the arc surface of the fan-shaped fin and the through hole 211 are made coaxial, which facilitates processing and makes the fin layout more convenient.

[0181] It should be noted that the cross-section of the fins in the embodiments can be rectangular or fan-shaped. Rectangular fins, fan-shaped fins, and other shaped fins can be combined and replaced as needed.

[0182] In some embodiments of this application, reference is made to Figure 12 , Figure 13 and Figure 14 The connecting part 22 includes at least two fins, the connecting groove 12 includes at least two, and the connecting groove 12 is arranged in a one-to-one correspondence with the fins. At least two fins are arranged around the axis of the through hole 211.

[0183] The connecting part 22 includes at least two fins, meaning that the connecting part 22 can have two fins or more than two fins.

[0184] The phrase "at least two fins are arranged around the axis of the through hole 211" means that in embodiments where the connecting portion 22 includes two or more fins, at least two fins are arranged around the axis of the through hole 211.

[0185] In this embodiment, the connecting part 22 may include at least two fins, and correspondingly, the connecting groove 12 on the structural beam 1 may also include at least two. The number and position of the connecting groove 12 and the fins may correspond one-to-one, so that each fin can be connected to the corresponding connecting groove 12. At the same time, when at least two fins are provided, the fins can be arranged around the axis of the through hole 211, which facilitates the layout and enables the main body 21 to be connected to the fixed box 110 through at least two different positions, providing connection stability.

[0186] It should be noted that the connecting portion 22 includes at least two fins, which can be arranged and combined in various embodiments. To facilitate manufacturing and provide sufficient connection stability, some arrangement embodiments are shown below.

[0187] In some embodiments of this application, reference is made to Figure 12 , Figure 13 and Figure 14 At least two fins are evenly distributed along the circumference of the through hole 211.

[0188] In this embodiment, at least two fins can be evenly distributed along the circumference of the through hole 211, thereby providing connections at different positions in the circumferential direction of the main body 21, so that the connection is subjected to uniform force.

[0189] In some embodiments of this application, reference is made to Figure 12 , Figure 13 and Figure 14 At least two fins are arranged symmetrically with respect to the axis of the through hole 211.

[0190] In this embodiment, at least two fins are provided and symmetrically arranged along the axis of the through hole 211, so that the two fins are evenly distributed in the circumference and are symmetrical in shape and position. Therefore, when the fins are connected to the connecting groove 12, the magnitude and position of the force on the main body 21 tend to be uniform, which further improves the stability of the connection.

[0191] It should be noted that the embodiments in which the fins are evenly distributed along the circumference of the through hole 211, and the embodiments in which the fins are symmetrically arranged with respect to the axis of the through hole 211, can exist alone or in combination.

[0192] In some embodiments of this application, reference is made to Figure 15 , Figure 16 , Figure 17 and Figure 18 The connecting part 22 includes four fins, with two fins forming a group. Fins in the same group are stacked radially along the through hole 211, while fins in different groups are evenly distributed circumferentially along the through hole 211.

[0193] In this embodiment, there can be four fins. Two fins form a group, and fins in different groups can be distributed circumferentially along the through-hole 211. Fins in the same group can be radially stacked along the through-hole 211. This combination of radial stacking and circumferential distribution makes the distribution of the four fins more rational and increases the connection strength. Furthermore, within each group, the two stacked fins can be rolled inwards and outwards respectively during curling to avoid each other and facilitate deformation.

[0194] Since the main body 21 needs to limit and support the fasteners, it needs a certain strength, while the connecting part 22 needs to be deformed under force. Compared with the main body 21, the strength requirement of the connecting part 22 is smaller.

[0195] Therefore, in some embodiments of this application, reference is made to Figure 12 Along the radial direction of the through hole 211, the thickness of the main body 21 is greater than the thickness of the connecting part 22, or the material strength of the main body 21 is greater than the material strength of the connecting part 22.

[0196] In this embodiment, the thickness of the main body 21 may be greater than the thickness of the connecting part 22 along the radial direction of the through hole 211, or the material strength of the main body 21 may be greater than the material strength of the connecting part 22. That is, the thickness of the two parts may be different through structural design, or different materials may be used to achieve different strengths.

[0197] In some embodiments of this application, reference is made to Figure 4 The main body 21 and the connecting part 22 are integrally formed into one piece.

[0198] In this embodiment, the main body 21 and the connecting part 22 are integrally formed into a whole component. That is to say, the entire bushing 2 is a complete whole component, which can facilitate assembly, reduce processes, and facilitate production and manufacturing.

[0199] In some embodiments of this application, reference is made to Figure 7 and Figure 8 When the liner 2 is connected to the housing 110, the connecting part 22 is connected in the connecting groove 12, and the main body 21 is located on one side of the structural beam 1.

[0200] In this embodiment, when the liner 2 is connected to the housing 110, the main body 21 is located on one side of the structural beam 1 and will not enter the mounting hole 11. This reduces interference with the mounting hole 11 and also reduces the lateral force exerted on the structural beam 1 of the housing 110 when the main body 21 is under stress, which is beneficial to protecting the battery cell 120 in the housing cavity 3.

[0201] In some embodiments of this application, the housing 110 includes a plurality of side frames and inner beams, the side frames enclosing a receiving cavity 3, the inner beams being used to connect at least two side frames, and the structural beam 1 being at least one of the side frames and the inner beams.

[0202] Among them, the frame refers to the structural enclosure set around the box 110. It is set on the outermost side, generally has high structural strength, and is convenient for mounting.

[0203] Internal beams refer to beams that may be installed inside or at the bottom of the box 110 to increase the overall structural strength. These beams, together with the frame, form the structural frame of the entire box 110 and have high structural strength. They can also be used to install mounting points.

[0204] In this embodiment, the liner 2 can be set at multiple positions on the housing 110 where mounting holes 11 can be set. For example, the structural beam 1 is at least one of the frame and the inner beam. That is, the mounting holes 11, the connecting grooves 12, and the corresponding liner 2 can all be set on at least one of the frame and the inner beam, so that the liner 2 has a wider range of applications and facilitates the overall layout of the housing 110.

[0205] This application provides an electrical appliance 1000, with reference to... Figure 1 The battery device 100, as described in the above embodiments, is used to provide electrical energy.

[0206] The electrical equipment 1000 provided in this application has the same technical effect as the battery device 100 in the above embodiment, namely, it can prevent cracking during vibration and is easy to install with simple procedures.

[0207] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery device, characterized in that, include: The box body has an internal cavity, and the box body includes structural beams, which are provided with mounting holes and connecting grooves. A single battery cell is housed within the receiving cavity; A bushing kit includes a main body and a connecting part, the main body having a through hole, the connecting part extending along the axial direction of the through hole and corresponding to the connecting groove; When the liner is connected to the housing, the connecting part is connected in the connecting groove, and the portion of the connecting part located in the connecting groove has at least a bent profile structure, and the through hole of the main body corresponds to the mounting hole.

2. The battery device according to claim 1, characterized in that, When the liner is attached to the housing, the contour of the connection portion is different from the contour when the liner is not attached to the housing.

3. The battery device according to claim 1, characterized in that, When the liner is connected to the housing, the connecting portion is wound along the wall of the connecting groove; the wall of the connecting groove includes a bottom surface facing the main body and a side surface extending along the axial direction of the through hole, and the bottom surface and the side surface have at least an arcuate surface at their junction.

4. The battery device according to claim 3, characterized in that, The bottom surface is an arc surface.

5. The battery device according to claim 3, characterized in that, The bottom surface includes a flat portion and an arc-shaped portion, the flat portion facing the main body portion, and the flat portion connecting to the side surface through the arc-shaped portion.

6. The battery device according to claim 3, characterized in that, The wall of the connecting groove also includes a limiting surface opposite to the bottom surface, and the limiting surface has a limiting protrusion. When the liner is connected to the housing, the connecting part abuts against the limiting protrusion.

7. The battery device according to claim 6, characterized in that, The limiting protrusion has an arc-shaped surface; When the liner is connected to the housing, the side of the connection near the end fits against the curved surface.

8. The battery device according to claim 6, characterized in that, The limiting protrusion extends along the axial direction of the through hole; When the liner is connected to the housing, the end of the connecting part abuts against the limiting protrusion.

9. The battery device according to claim 1, characterized in that, The structural beam is provided with a material reduction groove on the side away from the main body.

10. The battery device according to claim 9, characterized in that, The material reduction groove is opposite to and symmetrically arranged with respect to the connecting groove.

11. The battery device according to claim 9, characterized in that, The material reduction groove is opposite to the connecting groove, and the inner cavity of the material reduction groove extends to cover the area corresponding to the connecting groove.

12. The battery device according to claim 9, characterized in that, The structural beam has a notch that is radially recessed along the through hole at the connection point where the connecting groove and the material reduction groove are formed.

13. The battery device according to claim 12, characterized in that, The notch is annular.

14. The battery device according to claim 3, characterized in that, When the liner is attached to the housing, the connection includes at least a first portion that curls toward the side away from the mounting hole.

15. The battery device according to claim 3, characterized in that, When the liner is connected to the housing, the connection includes at least a second portion that is rolled up toward the side near the mounting hole, and the rolled-up second portion is positioned away from the mounting hole.

16. The battery device according to claim 3, characterized in that, The connecting portion includes at least one fin extending along the axial direction of the through hole, the fin having a plate-like structure.

17. The battery device according to claim 16, characterized in that, At least one of the fins has a rectangular cross-section.

18. The battery device according to claim 17, characterized in that, The thickness of the fin along the radial direction of the through hole ranges from 0.5 to 20 mm.

19. The battery device according to claim 16, characterized in that, At least one of the fins has a fan-shaped cross-section.

20. The battery device according to claim 19, characterized in that, The arc surface of the annular fin is coaxially arranged with the through hole.

21. The battery device according to claim 16, characterized in that, The connecting portion includes at least two fins, and the connecting groove includes at least two grooves, which are arranged in a one-to-one correspondence with the fins. The at least two fins are arranged around the axis of the through hole.

22. The battery device according to claim 21, characterized in that, At least two of the fins are evenly distributed circumferentially along the through hole.

23. The battery device according to claim 22, characterized in that, At least two of the fins are arranged symmetrically with respect to the axis of the through hole.

24. The battery device according to claim 21, characterized in that, The connecting part includes four fins, with two fins forming a group. The fins in the same group are stacked radially along the through hole, while the fins in different groups are evenly distributed circumferentially along the through hole.

25. The battery device according to any one of claims 1 to 24, characterized in that, Along the radial direction of the through hole, the thickness of the main body is greater than the thickness of the connecting part, or the material strength of the main body is greater than the material strength of the connecting part.

26. The battery device according to any one of claims 1 to 24, characterized in that, The main body and the connecting part are integrally formed into one unit.

27. The battery device according to any one of claims 1 to 24, characterized in that, When the liner is connected to the housing, the connecting part is connected in the connecting groove, and the main body is located on one side of the structural beam.

28. The battery device according to any one of claims 1 to 24, characterized in that, The housing includes multiple side frames and an inner beam. The side frames enclose the receiving cavity, and the inner beam is used to connect at least two of the side frames. The structural beam is at least one of the side frames and the inner beam.

29. An electrical appliance, characterized in that, The battery device includes any one of claims 1 to 28, the battery device being used to provide electrical energy.

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