Battery device and electric device

Abstract

The invention discloses a battery device and a power utilization device, the battery device comprises a battery monomer assembly, a box body and a hanging sleeve, the box body is used for accommodating the battery monomer assembly, the box body is provided with a hanging beam, the hanging beam is provided with a hanging hole, the hanging sleeve comprises a collapsing structure layer, at least part of the collapsing structure layer is installed in the hanging hole, and the collapsing structure layer is connected with the box body. The crumple structure layer comprises a first structure layer and a second structure layer in the radial direction, the second structure layer surrounds the radial outer side of the first structure layer and comprises a plurality of rib plates, and the rib plates are connected to the peripheral face of the first structure layer and form a crumple space. According to the battery device, through the bearing force of the first structure layer, the risk of deformation of the mounting sleeve in the axial direction of the mounting sleeve can be reduced, the mounting sleeve can be well collapsed and deformed when a vehicle is subjected to side collision through the multiple rib plates of the second structure layer, and therefore the risk that the mounting sleeve damages the battery single body assembly when the vehicle is subjected to side collision is reduced, and the service life of the battery single body assembly is prolonged. And the safety of the battery device is improved.

Description

Technical Field

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

[0002] In the related art, the battery device is mounted on the vehicle chassis or other designated positions through a mounting sleeve. At the same time, the mounting sleeve can also facilitate the installation and disassembly of the battery device, thereby facilitating maintenance and replacement. The mounting sleeve needs to have sufficient strength and rigidity to ensure the strength of the battery device mounting and the torque requirements of the bolts. In order to ensure the strength and rigidity of the mounting sleeve, the mounting sleeve generally adopts an annular column structure, that is, a fixing hole for connecting the fixing parts is provided in the center of the mounting sleeve, and the fixed surrounding wall is a solid structure. Although the mounting sleeve of this structure has high strength, due to its solid structure, when the battery device is hit from the side, the mounting beam and the frame of the battery device are collapsed and deformed, the local deformation at the assembly position of the mounting sleeve is large, which is easy to invade the interior of the battery box and then collide with the battery cell assembly, thereby easily affecting the safety of the battery device. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a battery device and an electrical device including the battery device, wherein the battery device can have high reliability and good safety.

[0004] In the first aspect, an embodiment of the present application provides a battery device, which includes: a battery cell assembly; a box body, the box body is used to accommodate the battery cell assembly, the box body is provided with a mounting beam, and the mounting beam is provided with a mounting hole; a mounting sleeve, the mounting sleeve includes a collapse structure layer, at least a portion of the collapse structure layer is installed in the mounting hole, the collapse structure layer includes a first structure layer and a second structure layer along the radial direction of the mounting sleeve, and in the radial direction of the mounting sleeve, the radial inner side of the first structure layer has a fixing hole allowing a fixing part to pass through, the second structure layer surrounds the radial outer side of the first structure layer, the second structure layer includes a plurality of ribs, the ribs are connected to the outer peripheral surface of the first structure layer, and form a collapse space, and the ribs can be deformed toward the collapse space when the external force is greater than a threshold.

[0005] In the above technical method, the mounting sleeve is structurally designed into a first structural layer and a second structural layer. The load-bearing capacity of the first structural layer is conducive to reducing the risk of deformation of the mounting sleeve in its axial direction. The second structural layer is connected to the outer peripheral surface of the first structural layer. The multiple ribs of the second structural layer can better collapse and deform the mounting sleeve when the vehicle is hit by a side collision, thereby reducing the risk of damage to the battery cell assembly caused by the mounting sleeve during a side collision of the vehicle and improving the safety of the battery device. In addition, the collapse and energy absorption of the mounting sleeve can also reduce the deformation of the box as a whole, thereby reducing damage to the battery device.

[0006] In some embodiments, the collapse space includes a first collapse space, the ribs are suitable for enclosing the first collapse space with the first structural layer, and the first collapse space extends along the axial direction of the mounting sleeve; and / or, the collapse space includes a second collapse space, at least two ribs enclose the second collapse space, and the second collapse space extends along the axial direction of the mounting sleeve.

[0007] In the above technical method, the second structural layer of the mounting sleeve can be used to construct a collapse space of different shapes according to actual needs, which has good flexibility. In addition, the collapse space extends along the axial direction of the mounting sleeve, which can better improve the axial structural strength of the mounting sleeve. At the same time, when the mounting sleeve is subjected to radial force, the rib plate can better collapse, deform and absorb energy, thereby better improving the safety of the battery device.

[0008] In some embodiments, the cross-sectional shape of the collapse space along a cross-section perpendicular to the axis of the mounting sleeve is at least one of circular, semicircular, elliptical, and polygonal.

[0009] In the above technical method, the collapse space can be designed according to actual needs, so that while ensuring the axial structural strength of the second structural layer in the mounting sleeve, it can collapse and deform well in the radial direction of the mounting sleeve, thereby improving the safety of the battery device.

[0010] In some embodiments, the mounting sleeve further includes a filling piece, which fills at least one of the collapse spaces, and the hardness of the filling piece is less than the hardness of the collapse structure layer, and / or the filling piece is elastic.

[0011] In the above technical method, the filling piece is filled in the collapsed space, which can make the mounting sleeve more stable when it collapses and deforms, and can absorb more energy. In addition, the filling piece can be configured with different functions according to actual needs to improve the flexibility and practicality of the mounting sleeve.

[0012] In some embodiments, the filler is a foam material.

[0013] In the above technical method, the foam material is combined with the collapse space to play a role in energy absorption, noise reduction, enhanced structural stability and other aspects, thereby improving the overall performance of the mounting sleeve.

[0014] In some embodiments, the collapse structural layer further includes a third structural layer, the third structural layer is connected to the outer peripheral side of the second structural layer, and the first structural layer and the third structural layer are both solid plates.

[0015] In the above technical method, the third structural layer is covered on the outside of the second structural layer. The third structural layer can protect the rib plate, which is beneficial to increase the contact area when the mounting part is connected with the inner wall of the mounting hole, and improve the connection stability; and the third structural layer can also better improve the structural strength of the mounting sleeve, and at the same time can cooperate with the first structural layer to constrain the deformation of the rib plate.

[0016] In some embodiments, in the radial direction of the mounting sleeve, the thickness of the first structural layer is greater than the thickness of the third structural layer.

[0017] In the above technical approach, through the "gradient rigidity" design of the mounting sleeve, the mounting sleeve can better absorb the force on the basis of collapse deformation, and at the same time make the mounting sleeve lightweight.

[0018] In some embodiments, the third structure layer and the second structure layer are formed of the same metal material, or the second structure layer is formed of a metal material, and the third structure layer is formed of a non-metal material.

[0019] In the above technical method, if the second structural layer and the third structural layer are formed of the same metal material, the risk of electrochemical corrosion caused by the difference in electrode potential can be reduced, and it can be suitable for scenarios where they are exposed to harsh environments such as moisture, acid and alkali for a long time, which is beneficial to extending the service life of the structure and reducing maintenance costs. If the second structural layer and the third structural layer are formed of different materials, the non-metallic material can block the electron conduction path of galvanic corrosion. At the same time, the non-metallic material has the characteristics of insulation and corrosion resistance, which can further protect the second structural layer formed by the metal material.

[0020] In some embodiments, the mounting sleeve further includes: an end face locking accessory, which is connected to an axial end of the second structural layer of the mounting sleeve and extends at least partially along the radial direction of the mounting sleeve to an axial end of the third structural layer of the mounting sleeve, and the end face locking accessory is fixedly connected to the mounting beam, wherein the end face locking accessory and the mounting beam are formed of the same metal material, and the end face locking accessory and the mounting beam are suitable for welding.

[0021] In the above technical approach, the mounting sleeve can be fixedly connected to the mounting beam through the end face locking attachment, and after the end face locking attachment and the mounting beam are welded, the reliability between the mounting sleeve and the mounting beam is high.

[0022] In some embodiments, the dimension of the end face lock attachment along the axial direction of the mounting sleeve is greater than or equal to mm.

[0023] In the above technical method, by making the end face locking accessory meet the above conditions, the end face locking accessory can be better provided with a sufficient welding area in the axial direction, thereby reducing the installation difficulty and improving the assembly efficiency when the end face locking accessory is welded to the mounting beam.

[0024] In some embodiments, the face lock attachment is annular and surrounds the axis of the mounting sleeve.

[0025] In the above technical approach, the annular end face locking accessory is beneficial for increasing the size of the welding surface, thereby reducing the installation difficulty and improving the assembly efficiency when the end face locking accessory is welded to the mounting beam.

[0026] In some embodiments, the rib is a flat plate parallel to the axis, and / or the rib is an arc-shaped plate bent around a first straight line parallel to the axis.

[0027] In the above technical approach, the collapse space can be designed according to actual needs, so that while ensuring the axial structural strength of the second structural layer, it can collapse and deform well in the radial direction, thereby improving the safety of the battery device.

[0028] In some embodiments, at least two of the collapse structure layers are radially arranged, and the at least two collapse structure layers are radially arranged in sequence.

[0029] In this technical approach, the multi-layered sleeve design achieves "graded energy absorption." Different crushing layers function in stages according to the impact intensity, effectively reducing the risk of overload failure associated with a single-layer structure, thereby enhancing the overall protective performance of the mount sleeve. Furthermore, the parameters of each crushing layer (such as material, thickness, and shape) can be adjusted to suit different operating conditions, adapting to complex and variable impact conditions.

[0030] In some embodiments, the plurality of collapse structural layers include a first collapse structural layer and a second collapse structural layer. Along the axial direction of the mounting sleeve, the length of the second collapse structural layer is smaller than the length of the first collapse structural layer. The second collapse structural layer is sheathed on the first collapse structural layer. The second collapse structural layer is fixedly connected to the mounting beam.

[0031] In this technical approach, the longer first crush structure layer serves as the primary energy-absorbing unit, absorbing the majority of the impact energy thanks to its greater deformation space and material usage. The shorter second crush structure layer, on the other hand, responds quickly during the initial impact, acting as a "pre-buffer," reducing the instantaneous peak load on the first crush structure layer and preventing its premature failure. Furthermore, this nested structure with a short outer layer and a long inner layer facilitates assembly and disassembly for maintenance, effectively reducing repair costs. Furthermore, the length ratio and material parameters of the two layers can be flexibly adjusted to optimize overall performance based on actual operating conditions.

[0032] In some embodiments, in the axial direction of the mounting sleeve, the second collapse structure layer is outermostly arranged on one end of the first collapse structure layer, wherein the outer diameter of the second collapse structure layer is larger than the aperture of the mounting hole, and the outer diameter of the first collapse structure layer is smaller than or equal to the aperture of the mounting hole, so that the first collapse structure layer is passed through the mounting hole, and the second collapse structure layer is located outside the mounting hole and abuts against the surface of the mounting beam, so as to limit the relative position of the mounting sleeve and the mounting beam in the axial direction of the mounting sleeve, or the mounting hole includes a first hole segment and a second hole segment along the axial direction, the aperture of the second hole segment and the outer diameter of the second collapse structure layer are both larger than the aperture of the first hole segment, the first collapse structure layer is passed through the first hole segment, and the second collapse structure layer is passed through the second hole segment.

[0033] In this technical approach, the second crush structure layer is overlaid on one end of the first crush structure layer. Its outer diameter is larger than the outer diameter of the mounting hole and is fixed to the side of the mounting beam. Alternatively, it is installed in conjunction with the first crush structure layer via a stepped mounting hole. This graded cushioning achieves gradual attenuation of impact energy, protecting the mounting beam, improving structural stability and durability, and facilitating maintenance and replacement.

[0034] In some embodiments, the ribs are welded or bonded to the first structural layer, and / or the first structural layer has an assembly groove, and a portion of the ribs is embedded in the assembly groove.

[0035] In the above technical approach, the stiffener plate can be connected to the first structural layer according to actual needs, which has good flexibility.

[0036] In some embodiments, the mounting sleeve is an integrally formed part.

[0037] In the above technical method, the one-piece molding process can make the overall stiffness of the mounting sleeve more uniform, and it is not easy to fail due to cracking at the joints when subjected to impact loads. In addition, the feature of not requiring assembly simplifies the production process, reduces the accumulation of component tolerances, improves assembly accuracy, and reduces the risk of performance degradation caused by loose connections.

[0038] In some embodiments, the mounting beam has at least one cavity, and the mounting hole is connected to at least one of the cavities.

[0039] In the above technical approach, the cavity design can reduce material usage while ensuring structural strength, achieve lightweighting, and reduce overall load; the internal space of the cavity can be used as a buffer area, absorbing energy through plastic deformation of the cavity wall under impact load, and cooperating with the collapse structure layer of the mounting sleeve to enhance the collapse energy absorption effect.

[0040] In a second aspect, an embodiment of the present application provides an electrical device, which includes: a battery device according to the first aspect of the present application.

[0041] According to the electrical device of the embodiment of the present application, the electrical device may include a battery device, which is used to store or provide electrical energy. By setting the electrical device of the above embodiment, the electrical device of the present application can have higher reliability and good safety.

[0042] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 A schematic structural diagram of a vehicle is provided as the electrical device provided in some embodiments of the present application.

[0044] Figure 2 This is a schematic diagram of the structure of the battery device in some embodiments of the present application with the top cover and frame of the box separated.

[0045] Figure 3 This is a schematic structural diagram of the mounting sleeve of the first embodiment of the present application.

[0046] Figure 4 This is a structural schematic diagram of the mounting sleeve of the second embodiment of the present application from one perspective.

[0047] Figure 5 This is a structural schematic diagram of the mounting sleeve of the second embodiment of the present application from another perspective.

[0048] Figure 6 This is a structural diagram of the mounting sleeve of the third embodiment of the present application.

[0049] Figure 7 This is a structural schematic diagram of the mounting sleeve of the second embodiment of the present application from another perspective.

[0050] Reference numerals: 1000. Vehicle; 100. Battery device; 200. Controller; 300. Motor; 10. Battery cell assembly; 20. Casing; 201. Top cover; 202. Frame; 2021. Frame; 2022. Mounting beam; 203. Bottom plate; 204. Cavity; 205. Mounting hole; 30. Mounting sleeve; 1. Collapse structure layer; 11. First structure layer; 111. Fixing hole; 12. Second structure layer; 121. Rib plate; 13. Third structure layer; 14. End face locking accessory; 21. First collapse space; 22. Second collapse space; 31. First collapse structure layer; 32. Second collapse structure layer. DETAILED DESCRIPTION

[0051] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0053] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0054] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0055] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0056] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0057] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0058] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0059] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include one or more battery cells. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or hybrid via a busbar.

[0060] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. For example, the battery cell assembly may be a battery module, which is formed by arranging and securing multiple battery cells to form a single module. For example, a battery module may be formed by bundling multiple battery cells using cable ties.

[0061] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case.

[0062] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0063] As an example, the battery cell assembly may also be housed in the box by directly fixing the plurality of battery cells to the box.

[0064] As an example, the housing may include a first housing and a second housing. The first housing and the second housing engage to form an enclosed space within the housing to house the battery cell assembly. Enclosed here means covered or closed, and can be either sealed or unsealed. The first housing may be a top cover or a bottom plate.

[0065] As an example, the box may include a top cover, a frame, and a bottom plate, wherein the top cover and the bottom plate are respectively connected to the frame to form a closed space inside the box to accommodate the battery cell assembly.

[0066] As an example, the box body can be used as a part of the chassis structure of the vehicle. For example, the top cover of the box body can become at least a part of the floor of the vehicle, or the frame of the box body can become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0067] The technical solutions described in the embodiments of this application are applicable to various electrical devices using battery devices, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0068] In recent years, new energy vehicles have experienced rapid development. In this field, batteries, as the power source of electric vehicles, play an irreplaceable and important role. As a core component of new energy vehicles, batteries have high safety requirements.

[0069] In the related art, the battery device is mounted on the vehicle chassis or other designated positions through a mounting sleeve. At the same time, the mounting sleeve can also facilitate the installation and disassembly of the battery device, thereby facilitating maintenance and replacement. The mounting sleeve needs to have sufficient strength and rigidity to ensure the strength of the battery device mounting and the torque requirements of the bolts. In order to ensure the strength and rigidity of the mounting sleeve, half of the mounting sleeve adopts a solid structure. Although the mounting sleeve of this structure has high strength, because it is a solid structure, when the battery device is hit from the side, the mounting beam and the frame of the battery device are crushed and deformed, the local deformation at the assembly position of the mounting sleeve is large, which can easily invade the interior of the battery box and collide with the battery cell assembly, thereby easily affecting the safety of the battery device.

[0070] Based on the above considerations, in order to improve the safety of the battery device, the inventor has designed a battery device after in-depth research. The mounting sleeve is structurally designed into a first structural layer and a second structural layer. The load-bearing capacity of the first structural layer is conducive to reducing the risk of deformation of the mounting sleeve in its axial direction. The second structural layer is connected to the outer peripheral surface of the first structural layer. The multiple ribs of the second structural layer can better collapse and deform the mounting sleeve when the vehicle is hit by a side collision, thereby reducing the risk of damage to the battery cell assembly caused by the mounting sleeve during a side collision of the vehicle, thereby improving the safety of the battery device. In addition, the collapse and energy absorption of the mounting sleeve can also reduce the deformation of the box as a whole, thereby reducing damage to the battery device.

[0071] For the convenience of explanation, the following embodiments take the electric device as a vehicle as an example to introduce the structures of the electric device, battery device and battery cell of the present application in detail.

[0072] Please refer to Figure 1 , Figure 1 The power consumption device provided for some embodiments of the present application is a schematic structural diagram of a vehicle 1000. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. The vehicle 1000 is provided with a battery device 100, which can be arranged at the bottom, head, or tail of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000. For example, the battery device 100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to power the motor 300, for example, for the starting, navigation, and driving power requirements of the vehicle 1000. In some embodiments of the present application, the battery device 100 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0073] Reference below Figure 2-Figure 7 A battery device 100 according to an embodiment of the first aspect of the present application is described.

[0074] Please refer to Figure 2 and Figure 3 , Figure 2 Schematic diagram of the structure of the battery device 100 in some embodiments of the present application in which the top cover 201 and the frame 202 of the box 20 are disassembled. Figure 3 This is a structural diagram of the mounting sleeve 30 of the first embodiment of the present application.

[0075] like Figure 2 and Figure 3As shown, the present application proposes a battery device 100, which includes a battery cell assembly 10, a box body 20 and a mounting sleeve 30. The box body 20 is used to accommodate the battery cell assembly 10. The box body 20 is provided with a mounting beam 2022. The mounting beam 2022 is provided with a mounting hole 205. The mounting sleeve 30 includes a collapse structure layer 1. At least a portion of the collapse structure layer 1 is installed in the mounting hole 205. The collapse structure layer 1 radially includes a first structure layer 11 and a second structure layer 12. The radial inner side of the first structure layer has a fixing hole 111 allowing a fixing part to pass through. The second structure layer 12 surrounds the radial outer side of the first structure layer 11. The second structure layer 12 includes a plurality of ribs 121. The ribs 121 are connected to the outer peripheral surface of the first structure layer 11 to form a collapse space. The ribs 121 can deform toward the collapse space when the external force is greater than a threshold.

[0076] like Figure 2 As shown, the box body 20 includes a top cover 201, a frame 202 and a bottom plate 203. The top cover 201 and the bottom plate 203 are respectively connected to the frame 202, so that a closed space is formed inside the box body 20 to accommodate the battery cell assembly 10. The frame 202 includes a frame 2021 and a mounting beam 2022. The frame 2021 and the mounting beam 2022 can be integrally formed and then welded together, or the frame 202 can be integrally formed to construct the frame 2021 and the mounting beam 2022. The integral forming method can be injection molding, extrusion molding, 3D printing, etc., which is not limited in this application. After being formed, the frame 202 has a cavity 204. When the vehicle 1000 is in a side collision, the frame 202 can collapse and absorb energy due to the presence of the cavity 204, which can reduce the damage to the battery cell when the vehicle 1000 is in a side collision.

[0077] Furthermore, two mounting beams 2022 can be provided. Taking the vehicle 1000 as an example, the two mounting beams 2022 can both extend in the front-rear direction and be located on both sides of the battery cell. The mounting beams 2022 can be installed on the bottom of the vehicle 1000 through the mounting sleeve 30 and the mounting bolts. In the present application, the mounting sleeve 30 includes a collapse structure layer 1, and at least a portion of the collapse structure layer 1 is installed in the mounting hole 205. That is, when the mounting sleeve 30 is subjected to an applied force, the collapse structure layer 1 located in the mounting hole 205 can collapse and deform. For example, the vehicle 1000 During a side collision, the frame 2021, the mounting beam 2022 and the mounting sleeve 30 are all deformed by force. Compared with the mounting sleeve 30 of a solid block, the deformation of the mounting sleeve 30 can reduce the intrusion of the mounting sleeve 30 into the interior of the box body 20, so that the frame 2021, the mounting beam 2022 and the mounting sleeve 30 are not easy to touch the battery cell assembly 10, and further, when the vehicle 1000 is in a side collision, the battery device 100 is not easy to catch fire or explode due to the collision of the battery cell assembly 10, thereby improving the safety of the battery device 100.

[0078] In addition, in the above example, when the mounting sleeve 30 collapses and deforms, it can also absorb a certain amount of collision force, which can reduce the overall deformation of the frame 2021, the mounting beam 2022 and the mounting sleeve 30, thereby reducing the impact of the collision force on the entire vehicle when the vehicle 1000 collides with the side.

[0079] Furthermore, the collapse structure layer 1 includes a first structure layer 11 and a second structure layer 12 in the radial direction. The radial inner side of the first structure layer 11 has a fixing hole 111 allowing a fixing member to pass through. The fixing member can be the above-mentioned mounting bolt or other fixing structure, and this application does not impose any restrictions.

[0080] The second structural layer 12 surrounds the radial outside of the first structural layer 11, and the second structural layer 12 includes a plurality of ribs 121, and the plurality of ribs 121 are circumferentially connected to the outer peripheral surface of the first structural layer 11, that is, the first structural layer 11 and the second structural layer 12 can be constructed as cylindrical structures respectively, and the first structural layer 11 is in the inner layer. After the mounting bolts are passed through the fixing holes 111, they can contact the first structural layer 11. Therefore, the first structural layer 11 needs to have a certain structural strength, or in other words, the first structural layer 11 needs to be mounted on the sleeve. The cylinder 30 has a certain structural strength in the axial direction. In this way, when the battery device 100 is installed on the bottom of the vehicle 1000 through the mounting sleeve 30 and the mounting bolts, when the axial force of the mounting sleeve 30 acts on the mounting sleeve 30, the load-bearing capacity of the first structural layer 11 is used to help reduce the risk of deformation of the mounting sleeve 30 in the axial direction of the mounting sleeve 30. Therefore, for example, the first structural layer 11 can be a solid plate-like structural layer, and the thickness of the first structural layer 11 in its radial direction can be adjusted according to the load-bearing requirements.

[0081] The second structural layer 12 includes a plurality of ribs 121, which are connected to the outer peripheral surface of the first structural layer 11. There is an angle between the ribs 121 and the outer peripheral surface of the first structural layer 11, that is, the second structural layer 12 is not a solid structure. The plurality of ribs 121 can be supported between the first structural layer 11 and the inner wall of the mounting hole 205, so that when the mounting sleeve 30 is inserted into the mounting hole 205, it is not easy to shake in the radial direction. Compared with the solid structure, when the vehicle 1000 collides with the side, the collision When force acts on the rib plate 121 through the mounting beam 2022, the rib plate 121 can be deformed to a better extent, and the intrusion of the mounting sleeve 30 into the interior of the box body 20 can be reduced, so that the frame 2021, the mounting beam 2022 and the mounting sleeve 30 are not likely to touch the battery cell assembly 10, and further, when the vehicle 1000 is side-collided, the battery device 100 is not likely to catch fire or explode due to the collision of the battery cell assembly 10, thereby improving the safety of the battery device 100. Or from another perspective, when the multiple ribs 121 are deformed, they can be deformed toward the collapse space, so that the radial size of the mounting sleeve 30 becomes smaller. In this way, after the frame 2021 and the mounting beam 2022 are deformed, the volume of the mounting sleeve 30 is also reduced, which can reduce the intrusion of the mounting sleeve 30 into the interior of the box body 20. At the same time, through the collapse energy absorption of the ribs 121, the overall deformation of the frame 2021, the mounting beam 2022 and the mounting sleeve 30 can be reduced, thereby reducing the impact of the collision force on the entire vehicle when the vehicle 1000 collides with the side.

[0082] Furthermore, a plurality of ribs 121 surround the outer peripheral surface of the first structural layer 11. The arrangement of the ribs 121 can be arranged according to actual needs, and this example does not impose any restrictions. The arrangement of the plurality of ribs 121 allows the mounting sleeve 30 to collapse and deform in a direction perpendicular to the axial direction. That is, when the vehicle 1000 is hit from the side, the mounting sleeve 30 can collapse and deform better, thereby reducing the risk of damage to the battery cell assembly 10 when the vehicle 1000 is hit from the side, and improving the safety of the battery device 100.

[0083] In one example, in the projection plane perpendicular to the axis of the mounting sleeve 30, the shape of the outer peripheral surface of the first structural layer 11 is circular, and at the connection between the rib plate 121 and the outer peripheral surface of the first structural layer 11, the angle a between the tangent of the rib plate 121 and the outer peripheral surface of the first structural layer 11 satisfies: 0°<a≤90°.

[0084] That is to say, when the angle a is in this range, it can effectively guide the stress transfer so that the impact force can be gradually dispersed along the connection direction between the rib plate 121 and the circular first structural layer 11, avoiding the concentration of stress in a local position and causing premature failure of the structure. Secondly, a reasonable angle setting can optimize the deformation mode of the collapse space. When impacted, the rib plate 121 and the circular structural layer work together to cause the second structural layer 12 to collapse along a preset path, thereby achieving stable and efficient energy absorption. For example, a smaller angle is conducive to converting the impact force into axial compression deformation of the rib plate 121, thereby improving the energy absorption efficiency; an angle close to 90° can enhance the radial bearing capacity of the structure and resist impact in the radial direction. In addition, the circular first structural layer 11 cooperates with the rib plate 121 with a specific angle, which can reduce material redundancy while promoting structural integrity, thereby achieving the purpose of lightweight design.

[0085] Illustratively, the angle a between the rib 121 and the tangent line of the outer peripheral surface of the first structural layer 11 can be 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 85°, or 90°.

[0086] In the above example, the mounting sleeve 30 is structurally designed to be a first structural layer 11 and a second structural layer 12. The load-bearing capacity of the first structural layer 11 helps to reduce the risk of deformation of the mounting sleeve 30 in its axial direction. The second structural layer 12 is connected to the outer peripheral surface of the first structural layer 11. The multiple ribs 121 of the second structural layer 12 can enable the mounting sleeve 30 to collapse and deform better when the vehicle 1000 is hit from the side, thereby reducing the risk of damage to the battery cell assembly 10 caused by the mounting sleeve 30 when the vehicle 1000 is hit from the side, thereby improving the safety of the battery device 100. In addition, the collapse and energy absorption of the mounting sleeve 30 can also reduce the deformation of the box body 20 as a whole, thereby reducing damage to the battery device 100.

[0087] Please refer to Figure 4-Figure 6 , Figure 4 This is a structural schematic diagram of a mounting sleeve 30 according to the second embodiment of the present application from one angle. Figure 5 This is a structural diagram of the mounting sleeve 30 from another angle according to the second embodiment of the present application. Figure 6 This is a structural diagram of a mounting sleeve 30 according to the third embodiment of the present application.

[0088] In some embodiments of the present application, Figure 4-Figure 6As shown, the second structural layer 12 has a collapse space, which includes a first collapse space 21. The ribs 121 are suitable for enclosing the first collapse space 21 with the first structural layer 11. The first collapse space 21 extends along the axial direction of the mounting sleeve 30. The collapse space includes a second collapse space 22. At least two ribs 121 enclose the second collapse space 22. The second collapse space 22 extends along the axial direction of the mounting sleeve 30.

[0089] like Figure 6 In the example shown, the rib plate 121 is an arc-shaped plate, and the rib plate 121 and the first structural layer 11 enclose a first collapse space 21. There are multiple rib plates 121, and the multiple rib plates 121 can be evenly spaced along the circumferential direction and arranged on the outer peripheral surface of the first structural layer 11. For the arc-shaped plate in the cross-section perpendicular to the axis, the arc can be a circular arc, an elliptical arc, or an irregular arc, and this application does not impose any restrictions.

[0090] like Figure 4 and Figure 5 A second collapse space 22 can be enclosed between at least two ribs 121. Figure 4 and Figure 5 In the example, six ribs 121 can enclose a second collapse space 22 having a hexagonal cross-sectional shape.

[0091] You can continue to refer to Figure 4 and Figure 5 , there is an angle between two adjacent ribs 121 among the multiple ribs 121, so that when the two ribs 121 are matched with the outer peripheral surface of the first structural layer 11, a second collapse space 22 can also be constructed. For example, the first structural layer 11 and the second structural layer 12 can be constructed simultaneously by one-piece molding, that is, the mounting sleeve 30 is integrally molded, and the one-piece molded mounting sleeve 30 has two structural layers in the radial direction, and the two structural layers are the first structural layer 11 and the second structural layer 12. For example, the first structural layer 11 and the second structural layer 12 can be respectively constructed by one-piece molding and then fixed by welding or bonding, etc., and this application does not impose any restrictions on this.

[0092] In this embodiment, both the first and second collapse spaces 21 and 22 extend axially along the mounting sleeve 30. In other words, the ribs 121 extend axially along the mounting sleeve 30. Thus, the ribs 121 extending axially along the mounting sleeve 30 can improve the axial structural strength of the second structural layer 12. Therefore, when the mounting sleeve 30 is subjected to axial forces, the second structural layer 12 can effectively share the axial forces of the first structural layer 11, thereby effectively improving the axial structural strength of the mounting sleeve 30. Furthermore, when the mounting sleeve 30 is subjected to radial forces, the ribs 121 can effectively collapse, deform, and absorb energy, thereby effectively improving the safety of the battery device 100.

[0093] In the above example, the second structural layer 12 of the mounting sleeve 30 can be constructed into a collapse space of different shapes according to actual needs, which has good flexibility. In addition, the collapse space extends along the axial direction of the mounting sleeve 30, which can better improve the axial structural strength of the mounting sleeve 30. At the same time, when the mounting sleeve 30 is subjected to a radial force, the rib plate 121 can better collapse, deform and absorb energy, thereby better improving the safety of the battery device 100.

[0094] In some embodiments of the present application, Figure 4-Figure 6 As shown, in the cross section perpendicular to the axis of the mounting sleeve 30, the cross-sectional shape of the collapse space is at least one of circular, semicircular, elliptical and polygonal.

[0095] In other words, the crumple zone with a circular cross-section is more evenly stressed, more stable during deformation and energy absorption during crumple, and has high structural stiffness along the axial direction, making it easy to process and conducive to mass production. A semicircle can better fit in narrow spaces, can be flexibly combined, and has the advantage of being lightweight. An ellipse can optimize energy absorption based on the impact direction by varying the stiffness of its long and short axes. A polygon can adjust stiffness in different directions through side length and angle design, forming an array structure through modular splicing, and can also actively adjust the location of stress concentration points. When combining multiple cross-sectional shapes, the crumple zone can be customized according to actual working conditions, such as impact forces in different directions and installation space restrictions, to achieve an optimal balance between energy absorption, structural strength, space utilization, and cost control.

[0096] Exemplarily, the polygon may be a regular polygon, such as an equilateral triangle, a square, a regular pentagon, a regular hexagon, etc. The structural form of the regular polygon can make it more stable during collapse and deformation.

[0097] In the above example, the collapse space can be designed according to actual needs, so that while ensuring the axial structural strength of the second structural layer 12 in the mounting sleeve 30, it can be better collapsed and deformed in the radial direction of the mounting sleeve 30, thereby improving the safety of the battery device 100.

[0098] In some embodiments of the present application, the mounting sleeve 30 further includes a filler, which fills at least one of the collapsed spaces. The hardness of the filler is less than the hardness of the collapsed structure layer 1, and / or the filler is elastic.

[0099] That is to say, the filler is filled in the collapse space, and the filler can change the deformation mode of the collapse space so that when it is impacted, it absorbs more energy through friction, extrusion and deformation with the filling material. For example, the foam metal filler can not only buffer the impact force acting on the mounting sleeve 30, but also slow down the deformation speed of the collapse space, disperse stress, and reduce the impact peak. The filler can also enhance the stability of the collapse space, prevent it from buckling or losing stability prematurely, and facilitate the orderly energy absorption process. The filler can also be customized according to demand, such as sound insulation and heat insulation filling materials, so that the collapse space can meet additional requirements such as sound insulation, noise reduction, temperature control, etc. while achieving the buffering function, which is highly practical and flexible.

[0100] For example, the hardness of the filling piece is less than the hardness of the collapse structure layer 1, and the filling piece has elasticity, which can make the filling piece easier to collapse and absorb energy than the collapse structure layer 1, thereby better slowing down the deformation speed of the collapse space, dispersing stress, reducing the impact peak, and enhancing the stability of the collapse space, preventing it from buckling or becoming unstable prematurely, which is conducive to the orderly progress of the energy absorption process.

[0101] In the above example, the filling piece is filled in the collapsed space, which can make the mounting sleeve 30 more stable when it collapses and deforms, and can absorb more energy. In addition, the filling piece can be configured with different functions according to actual needs to improve the flexibility and practicality of the mounting sleeve 30.

[0102] In some embodiments of the present application, the filling member is a foam material.

[0103] In other words, there are many types of foam materials, and their application in the crumple zone can enhance its performance. Among common foam materials, polyurethane foam offers excellent flexibility and cushioning properties, with a wide adjustable density range. Low-density polyurethane foam is lightweight and highly energy-absorbing, effectively absorbing impact energy in lightweight designs. High-density polyurethane foam offers greater strength, providing structural support for the crumple zone and slowing cavity deformation. Polystyrene foam is low-cost and easy to form, and its closed-cell structure provides excellent thermal and acoustic insulation. When used in the crumple zone, it not only cushions impact but also reduces noise and heat transfer. Metal-based foam materials, such as aluminum-based foam, combine the high strength of metal with the porous properties of foam. They maintain stable mechanical properties under high temperature and high pressure environments, can withstand high-load impacts, absorb energy, and prevent brittle failure in the crumple zone. By integrating with the crumple zone, the foam material contributes to energy absorption, noise reduction, and enhanced structural stability, thereby improving the overall performance of the mounting sleeve 30.

[0104] In the above example, the foam material is combined with the collapse space to play a role in energy absorption, noise reduction, and enhanced structural stability, thereby improving the overall performance of the mounting sleeve 30.

[0105] In some embodiments of the present application, Figure 3-Figure 6 As shown, the collapse structure layer 1 further includes a third structure layer 13 , which is connected to the outer peripheral side of the second structure layer 12 . The first structure layer 11 and the third structure layer 13 are both solid plates.

[0106] That is to say, the first structural layer 11 and the third structural layer 13 can cooperate with each other to jointly improve the axial structural strength of the mounting sleeve 30, and the second structural layer 12 is located between the first structural layer 11 and the third structural layer 13. When the ribs 121 of the second structural layer 12 are deformed, the first structural layer 11 and the third structural layer 13 can cooperate to better constrain the deformation path of the ribs 121, so that the ribs 121 can undergo controllable collapse deformation along the impact, and can also make the collapse energy absorption process more stable and efficient. In addition, the third structural layer 13 is coated on the outside of the second structural layer 12, and the third structural layer 13 can protect the ribs 121, which is beneficial to increase the contact area when the mounting sleeve 30 is connected to the inner wall of the mounting hole 205, improve the connection stability, and Figure 3 In the example shown, the two ends of the rib plate 121 are respectively connected to the first structural layer 11 and the third structural layer 13. The structural stability of the rib plate 121 is good, so that the battery device 100 can be better installed on the bottom of the vehicle 1000 through the mounting sleeve 30 and the mounting bolts.

[0107] Exemplarily, the first structural layer 11 can be a steel plate or an aluminum plate. When the first structural layer 11 is a steel plate, the thickness in the radial direction of the mounting sleeve 30 is greater than or equal to 0.5 mm. When the first structural layer 11 is an aluminum plate, the thickness in the radial direction of the mounting sleeve 30 is greater than or equal to 1 mm.

[0108] Exemplarily, the third structural layer 13 can be a steel plate or an aluminum plate. When the third structural layer 13 is a steel plate, the thickness in the radial direction of the mounting sleeve 30 is greater than or equal to 0.5 mm. When the third structural layer 13 is an aluminum plate, the thickness in the radial direction of the mounting sleeve 30 is greater than or equal to 1 mm.

[0109] In the above example, the third structural layer 13 is covered on the outside of the second structural layer 12. The third structural layer 13 can protect the rib plate 121, which is beneficial to increase the contact area when the mounting sleeve 30 is connected to the inner wall of the mounting hole 205, and improve the connection stability; and the third structural layer 13 can also better improve the structural strength of the mounting sleeve 30, and at the same time can cooperate with the first structural layer 11 to constrain the deformation of the rib plate 121.

[0110] In some embodiments of the present application, in the radial direction of the mounting sleeve 30 , the thickness of the first structural layer 11 is greater than the thickness of the third structural layer 13 .

[0111] In other words, the first structural layer 11 is thicker than the third structural layer 13, creating a "gradient rigidity" design. The thicker first structural layer 11, thanks to its superior structural strength, prevents rapid failure of the mounting sleeve 30 and the mounting bolts inserted therein. The thinner third structural layer 13 provides auxiliary support during the later stages of deformation of the second structural layer 12, preventing premature rupture of the outer layer and ensuring a complete and orderly energy absorption process. This "strong inside, tough outside" gradient design attenuates and disperses applied forces layer by layer, reducing the risk of localized stress concentration. Furthermore, differentiated thickness reduces overall material usage, achieving a balance between energy absorption efficiency and lightweighting.

[0112] In the above example, through the "gradient rigidity" design of the mounting sleeve 30, the mounting sleeve 30 can better absorb the force on the basis of collapse deformation, and at the same time make the mounting sleeve 30 have the characteristics of lightweight.

[0113] In some embodiments of the present application, the third structure layer 13 and the second structure layer 12 are formed of the same metal material, or the second structure layer 12 is formed of a metal material, and the third structure layer 13 is formed of a non-metal material.

[0114] In other words, the third structural layer 13 and the second structural layer 12 are constructed of the same metal material, or a combination of non-metal and metal, effectively avoiding galvanic corrosion between dissimilar metals and significantly improving the durability and reliability of the crush structure. When both are formed from the same metal material, the risk of electrochemical corrosion caused by differences in electrode potential is reduced, making them suitable for long-term exposure to harsh environments such as moisture, acidity, and alkalis, thereby extending the structural service life and reducing maintenance costs. If the second structural layer 12 is metal and the third structural layer 13 is non-metallic (such as high-strength engineering plastics or composite materials), the non-metallic material can block the electron conduction path of galvanic corrosion while leveraging the non-metallic material's insulation and weather resistance to further protect the metal structural layer. Furthermore, the non-metallic third structural layer 13 provides additional features such as lightweighting, thermal insulation, and noise reduction, optimizing overall performance. This prevents potential structural strength loss and premature failure of the mounting sleeve 30 due to corrosion, ensuring the crush structure maintains its stable energy-absorbing and buffering capabilities throughout its lifecycle.

[0115] For example, the metal material may be copper or aluminum, etc., which is not limited in this application.

[0116] In the above example, if the third structural layer 13 and the second structural layer 12 are formed of the same metal material, the risk of electrochemical corrosion caused by the difference in electrode potential can be reduced, and it can be suitable for scenarios where they are exposed to harsh environments such as moisture, acid and alkali for a long time, which is beneficial to extending the service life of the structure and reducing maintenance costs. If the second structural layer 12 and the third structural layer 13 are formed of different materials, the non-metallic material can block the electron conduction path of galvanic corrosion, while giving full play to the insulation and weather resistance advantages of the non-metallic material to further protect the metal structural layer.

[0117] Please refer to Figure 7 , Figure 7 This is a structural schematic diagram of the mounting sleeve 30 according to the second embodiment of the present application from another angle.

[0118] In some embodiments of the present application, Figure 4 and Figure 7 As shown, the mounting sleeve 30 also includes: an end face locking accessory 14, which is connected to the second structural layer 12 at one axial end of the mounting sleeve 30, and at least partially extends along the radial direction of the mounting sleeve 30 to the third structural layer 13 at one axial end of the mounting sleeve 30, and the end face locking accessory 14 is fixedly connected to the mounting beam 2022, wherein the end face locking accessory 14 and the mounting beam 2022 are formed of the same metal material, and the end face locking accessory 14 and the mounting beam 2022 are suitable for welding.

[0119] That is to say, the end face locking accessory 14 can be welded to the mounting beam 2022, so that the end face locking accessory 14 and the mounting beam 2022 are formed of the same metal material, which can facilitate welding between the end face locking accessory 14 and the mounting beam 2022. Therefore, the mounting sleeve 30 can be fixedly connected to the mounting beam 2022 by setting the end face locking accessory 14.

[0120] Furthermore, the end face locking accessory 14 is connected to one axial end of the second structural layer 12 on the mounting sleeve 30, and at least partially extends to one axial end of the third structural layer 13 on the mounting sleeve 30. This can better increase the radial size of the end face locking accessory 14 on the mounting sleeve 30, thereby improving the structural strength of the end face locking accessory 14, so that after the end face locking accessory 14 is welded to the mounting beam 2022, the reliability between the mounting sleeve 30 and the mounting beam 2022 is higher.

[0121] In the above example, the mounting sleeve 30 can be fixedly connected to the mounting beam 2022 through the end face locking accessory 14 , and after the end face locking accessory 14 and the mounting beam 2022 are welded, the reliability between the mounting sleeve 30 and the mounting beam 2022 is high.

[0122] In some embodiments of the present application, Figure 4 and Figure 7 As shown, the dimension of the end face locking attachment 14 along the axial direction of the mounting sleeve 30 is greater than or equal to 1 mm.

[0123] In the above example, by ensuring that the end face locking accessory 14 meets the above conditions, the end face locking accessory 14 can better have a sufficient welding area in the axial direction of the mounting sleeve 30, thereby reducing the installation difficulty and improving the assembly efficiency when the end face locking accessory 14 is welded to the mounting beam 2022.

[0124] For example, the dimension of the end lock accessory 14 along the axial direction of the mounting sleeve 30 may be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, or 2 mm.

[0125] In some embodiments of the present application, Figure 4 and Figure 7 As shown, the face lock attachment 14 is annular and surrounds the axis of the mounting sleeve 30 .

[0126] In the above example, the annular end face locking component 14 can be beneficial for increasing the size of the welding surface, thereby reducing the installation difficulty and improving the assembly efficiency when the end face locking component 14 is welded to the mounting beam 2022 .

[0127] For example, taking the battery device 100 as mounted on the bottom of the vehicle 1000 , the end face locking accessory 14 may be located at the upper end of the mounting sleeve 30 .

[0128] In some embodiments of the present application, Figure 3-Figure 6 As shown, the rib plate 121 is a flat plate parallel to the axis, and / or the rib plate 121 is an arc-shaped plate bent around a first straight line parallel to the axis.

[0129] In other words, the ribs 121 are configured as flat or curved plates and arranged parallel to the axis, which can improve the performance of the crush structure in multiple dimensions. The flat plate has a relatively regular shape and can evenly distribute the impact force along the axial direction when subjected to stress. It uses its own planar stiffness to delay structural buckling and guide the crush space to fold in an orderly manner in a straight line, achieving stable energy absorption. At the same time, the flat plate structure is easy to process and manufacture, and the energy absorption efficiency can be optimized by adjusting the plate thickness and spacing. The curved plate bends around a straight line parallel to the axis, and its curved surface characteristics provide the structure with stronger torsional and bending resistance. Under complex impacts, the curved design can evenly distribute stress along the curved surface, avoiding local failure caused by stress concentration, while absorbing more energy through a larger deformation stroke. In addition, the flat plate and curved ribs 121 can be used in combination, taking into account the advantages of linear and curved deformation, achieving multi-directional and multi-mode energy absorption effects, and enhancing the structure's adaptability to impacts at different angles.

[0130] In addition, Figure 3 In the example, the plurality of ribs 121 are spaced apart, and in the circumferential direction, the distance between two adjacent ribs 121 on the outer circumferential surface of the first structural layer may be between 5 mm and 30 mm.

[0131] And, in Figure 3 In the example, the third structural layer 13 can be installed on the outer side of the second structural layer 12 by welding or bonding.

[0132] In the above example, the collapse space can be designed according to actual needs, so that while ensuring the axial structural strength of the second structural layer 12 , it can collapse and deform well in the radial direction, thereby improving the safety of the battery device 100 .

[0133] In some embodiments of the present application, at least two collapse structure layers 1 are provided in the radial direction, and the at least two collapse structure layers 1 are sequentially nested in the radial direction.

[0134] In other words, the multi-layered design achieves "graded energy absorption." Different layers of the crush structure 1 function in stages, depending on the impact intensity. The outer layer initially withstands low-intensity impacts and provides initial cushioning, while the inner layer absorbs further energy as the impact force increases. This effectively reduces the risk of overload failure associated with a single-layer structure, thereby enhancing the overall protective performance of the mounting sleeve 30. Furthermore, the parameters of each crush structure layer (such as material, thickness, and shape) can be adjusted according to different operating conditions to adapt to complex and changing impact conditions.

[0135] For example, the two collapsed structure layers 1 can be independently molded as a whole and then assembled, or they can be molded as a whole at one time without the need for assembly. In terms of technology, the method of independently molding as a whole and then assembling facilitates the flexible replacement of damaged layers, reduces maintenance costs, and is conducive to modular production; while the one-time integrated molding reduces the assembly process, avoids strength loss due to connectors, improves production efficiency, and ensures structural integrity.

[0136] In the above example, the multi-layered sleeve design achieves "graded energy absorption." Different layers of the crush structure 1 function in stages according to the impact intensity, effectively reducing the risk of overload failure associated with a single-layer structure, thereby enhancing the overall protective performance of the mounting sleeve 30. Furthermore, the parameters of each crush structure layer (such as material, thickness, and shape) can be adjusted according to different operating conditions to adapt to complex and changing impact conditions.

[0137] In some embodiments of the present application, Figure 3 and Figure 6 As shown, the multiple collapse structure layers 1 include a first collapse structure layer 31 and a second collapse structure layer 32. Along the axial direction of the mounting sleeve 30, the length of the second collapse structure layer 32 is less than the length of the first collapse structure layer 31. The second collapse structure layer 32 is sheathed on the first collapse structure layer 31. The second collapse structure layer 32 is fixedly connected to the mounting beam 2022.

[0138] In the above example, the longer first crush structure layer 31 serves as the primary energy-absorbing element, absorbing the majority of the impact energy thanks to its greater deformation space and material usage. Meanwhile, the shorter second crush structure layer 32 responds quickly during the initial impact, acting as a "pre-cushion," reducing the instantaneous peak load on the first crush structure layer 31 and preventing premature failure. Furthermore, this nested structure, with its short outer layer and long inner layer, facilitates assembly and disassembly for maintenance, effectively reducing repair costs. Furthermore, the length ratio and material parameters of the two layers can be flexibly adjusted to optimize overall performance based on actual operating conditions.

[0139] In some embodiments of the present application, in the axial direction of the mounting sleeve 30, the second collapse structure layer 32 is sheathed on one end of the first collapse structure layer 31, wherein the outer diameter of the second collapse structure layer 32 is larger than the aperture of the mounting hole 205, and the outer diameter of the first collapse structure layer 31 is smaller than or equal to the aperture of the mounting hole 205, so that the first collapse structure layer 31 is passed through the mounting hole 205, and the second collapse structure layer 32 is located outside the mounting hole 205 and abuts against the surface of the mounting beam 2022, so as to limit the relative position of the mounting sleeve 30 and the mounting beam 2022 in the axial direction of the mounting sleeve 30, or, the mounting hole 205 includes a first hole section and a second hole section along the axial direction, the aperture of the second hole section and the outer diameter of the second collapse structure layer 32 are both larger than the aperture of the first hole section, the first collapse structure layer 31 is passed through the first hole section, and the second collapse structure layer 32 is passed through the second hole section.

[0140] Specifically, the second crush structure layer 32 is positioned over one end of the first crush structure layer 31. Its outer diameter is larger than the mounting hole 205. The second crush structure layer 32 can be directly fixed to the surface of the mounting beam 2022 or installed in conjunction with the first crush structure layer 31 via a stepped mounting hole 205 (first and second hole sections). This ensures that impact forces are transmitted in an orderly manner from the outer layer to the inner layer. When an impact occurs, the second crush structure layer 32, with its larger outer diameter, first contacts and absorbs some of the energy, weakening the impact force through its own deformation. The impact force is then transmitted to the inner first crush structure layer 31 for secondary cushioning. The stepped mounting hole 205 design further optimizes the force transmission path. The second hole section tightly mates with the second crush structure layer 32, limiting its radial displacement and ensuring stable axial energy release. The first hole section mates with the first crush structure layer 31, allowing it to deform within a controlled range, preventing structural failure due to excessive displacement.

[0141] The above structural design significantly enhances the reliability and safety of the mounting sleeve 30. Through the synergistic effect of the dual collapse structures, impact energy is effectively dispersed and absorbed, reducing the risk of damage to the mounting beam 2022 from a single impact and extending the service life of the device. Furthermore, the stepped hole design enhances the robustness of the assembly, reduces looseness and wear between components, and improves the durability of the overall structure.

[0142] For example, taking the battery device 100 mounted on the bottom of the vehicle 1000 as an example, the second collapse structure layer 32 is externally mounted on the upper end of the first collapse structure layer 31 .

[0143] In the above example, the second crush structure layer 32 is positioned over one end of the first crush structure layer 31. Its outer diameter is larger than that of the mounting hole 205 and is secured to the side of the mounting beam 2022. Alternatively, the second crush structure layer 32 is mounted in conjunction with the first crush structure layer 31 via the stepped mounting hole 205. This graded cushioning provides gradual attenuation of impact energy, protecting the mounting beam 2022, enhancing structural stability and durability, and facilitating maintenance and replacement.

[0144] In some embodiments of the present application, the ribs 121 are welded or bonded to the first structural layer 11 , and / or the first structural layer 11 has an assembly groove, and a portion of the ribs 121 is embedded in the assembly groove.

[0145] In other words, the welded connection improves the connection strength between the ribs 121 and the first structural layer 11, ensuring that the ribs 121 and the first structural layer 11 maintain coordinated deformation under impact, thus avoiding a decrease in energy absorption efficiency due to connection failure. The adhesive connection, by leveraging the flexible cushioning of the adhesive layer, alleviates stress concentration, while simplifying the process and reducing weight. Embedding the ribs 121 in the assembly grooves of the first structural layer 11 enhances connection reliability through mechanical interlocking. The limiting effect of the assembly grooves precisely positions the ribs 121, preventing displacement during impact. When used in conjunction with welding or adhesive bonding, this significantly improves connection strength and durability, ensuring efficient energy absorption for the collapsed structure while reducing manufacturing difficulty and cost.

[0146] In the above example, the rib plate 121 can be connected to the first structural layer 11 according to actual needs, which has good flexibility.

[0147] In some embodiments of the present application, the mounting sleeve 30 is an integrally formed part.

[0148] In the above example, the one-piece molding process can make the overall stiffness of the mounting sleeve 30 more uniform, and it is not easy to fail due to cracking at the joints when subjected to impact loads. In addition, the feature of not requiring assembly simplifies the production process, reduces the accumulation of component tolerances, improves assembly accuracy, and reduces the risk of performance degradation caused by loose connections.

[0149] In some embodiments of the present application, the mounting beam 2022 has at least one cavity 204 , and the mounting hole 205 is connected to the at least one cavity 204 .

[0150] In the above example, the design of the cavity 204 can reduce the amount of material used while ensuring the structural strength, achieve lightweighting, and reduce the overall load; the internal space of the cavity 204 can be used as a buffer area, and the plastic deformation of the cavity 204 wall absorbs energy under impact load, and the collapsible structure layer 1 of the mounting sleeve 30 can enhance the effect of collapsing energy absorption. In addition, the mounting hole 205 is connected to at least one cavity 204, so that the mounting beam 2022 and the mounting sleeve 30 form an integral collapsible structure, that is, under impact load, the mounting sleeve 30 and the mounting sleeve 30 can absorb the energy of the collapsible structure. The mounting beam 2022 in contact with the carrier sleeve 30 can collapse synchronously. For example, during the collapse process, the collapsed mounting sleeve 30 can invade the collapsed mounting beam 2022, thereby reducing the invasion of the mounting sleeve 30 toward the interior of the box body 20, so that the frame 2021, the mounting beam 2022 and the mounting sleeve 30 are not easy to touch the battery cell assembly 10, and then when the vehicle 1000 is side-collided, the battery device 100 is not easy to catch fire and explode due to the collision of the battery cell assembly 10, thereby improving the safety of the battery device 100.

[0151] For example, a filling piece may also be provided in the cavity 204 , and this application does not impose any limitation thereto.

[0152] The present application also provides an electrical device having the battery device 100 of the above embodiment.

[0153] According to the electrical device of the embodiment of the present application, the electrical device may include a battery device 100, which is used to store or provide electrical energy. By setting the electrical device of the above embodiment, the electrical device of the present application can have higher reliability and good safety.

[0154] Other structures and operations of the battery device 100 and the electrical device according to the embodiment of the present application are well known to those skilled in the art and will not be described in detail here.

[0155] In the description of this specification, reference to the terms "some embodiments," "optionally," "further," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0156] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that: include: Battery cell assembly (10); A box (20), the box (20) being used to accommodate the battery cell assembly (10), the box (20) being provided with a mounting beam (2022), and the mounting beam (2022) being provided with a mounting hole (205); A mounting sleeve (30), the mounting sleeve (30) comprising a collapse structure layer (1), at least a portion of the collapse structure layer (1) being mounted in the mounting hole (205), the collapse structure layer (1) comprising a first structure layer (11) and a second structure layer (12) along the radial direction of the mounting sleeve (30), and in the radial direction of the mounting sleeve (30), the radial inner side of the first structure layer (11) comprises a fixing hole (111) for allowing a fixing member to pass through, the second structure layer (12) surrounds the radial outer side of the first structure layer (11), the second structure layer (12) comprises a plurality of ribs (121), the ribs (121) are connected to the outer peripheral surface of the first structure layer (11), and form a collapse space, the ribs (121) can be deformed toward the collapse space when the external force applied thereto is greater than a threshold value.

2. The battery device according to claim 1, wherein: The collapse space includes a first collapse space (21), the rib plate (121) is suitable for enclosing the first collapse space (21) with the first structural layer (11), and the first collapse space (21) extends along the axial direction of the mounting sleeve (30); and / or, The collapse space includes a second collapse space (22), and at least two ribs (121) enclose the second collapse space (22). The second collapse space (22) extends along the axial direction of the mounting sleeve (30).

3. The battery device according to claim 2, characterized in that In a cross section perpendicular to the axis of the mounting sleeve (30), the cross-sectional shape of the collapse space is at least one of circular, semicircular, elliptical and polygonal.

4. The battery device according to claim 3, characterized in that The mounting sleeve (30) further comprises a filling piece, which fills at least one of the collapsed spaces, wherein the hardness of the filling piece is less than the hardness of the collapsed structural layer (1), and / or the filling piece has elasticity.

5. The battery device according to claim 4, characterized in that The filling piece is made of foam material.

6. The battery device according to claim 1, wherein: The collapsed structural layer (1) further comprises a third structural layer (13), wherein the third structural layer (13) is connected to the outer peripheral side of the second structural layer (12), and the first structural layer (11) and the third structural layer (13) are both solid plates.

7. The battery device according to claim 6, characterized in that In the radial direction of the mounting sleeve (30), the thickness of the first structural layer (11) is greater than the thickness of the third structural layer (13).

8. The battery device according to claim 6, characterized in that The third structural layer (13) and the second structural layer (12) are formed of the same metal material, or, The second structural layer (12) is formed of a metal material, and the third structural layer (13) is formed of a non-metal material.

9. The battery device according to claim 6, characterized in that The mounting sleeve (30) further includes: an end face locking accessory (14), the end face locking accessory (14) being connected to one axial end of the second structural layer (12) and at least partially extending radially to one axial end of the third structural layer (13), the end face locking accessory (14) being fixedly connected to the mounting beam (2022), wherein the end face locking accessory (14) and the mounting beam (2022) are formed of the same metal material, and the end face locking accessory (14) and the mounting beam (2022) are welded.

10. The battery device according to claim 9, characterized in that The dimension of the end face locking accessory (14) along the axial direction of the mounting sleeve (30) is greater than or equal to 1 mm.

11. The battery device according to claim 9, characterized in that The end face locking accessory (14) is annular and surrounds the axis of the mounting sleeve (30).

12. The battery device according to claim 1, wherein: The rib plate (121) is a flat plate, the flat plate is parallel to the axis, and / or, The rib plate (121) is an arc-shaped plate, and the arc-shaped plate is bent around a first straight line, and the first straight line is parallel to the axis.

13. The battery device according to claim 1, wherein: At least two of the collapse structure layers (1) are arranged radially, and the at least two collapse structure layers (1) are sequentially sleeved in the radial direction.

14. The battery device according to claim 13, wherein: The plurality of collapse structural layers (1) include a first collapse structural layer (31) and a second collapse structural layer (32); along the axial direction of the mounting sleeve (30), the length of the second collapse structural layer (32) is less than the length of the first collapse structural layer (31); the second collapse structural layer (32) is sheathed on the first collapse structural layer (31); and the second collapse structural layer (32) is fixedly connected to the mounting beam (2022).

15. The battery device according to claim 14, characterized in that In the axial direction of the mounting sleeve (30), the second collapse structure layer (32) is sheathed on one end of the first collapse structure layer (31), wherein: The outer diameter of the second collapse structure layer (32) is larger than the aperture of the mounting hole (205), and the outer diameter of the first collapse structure layer (31) is smaller than or equal to the aperture of the mounting hole (205), so that the first collapse structure layer (31) is passed through the mounting hole (205), and the second collapse structure layer (32) is located outside the mounting hole (205) and abuts against the surface of the mounting beam (2022), so as to limit the relative position of the mounting sleeve (30) and the mounting beam (2022) in the axial direction of the mounting sleeve (30); or, The mounting hole (205) includes a first hole section and a second hole section along the axial direction, the aperture of the second hole section and the outer diameter of the second collapse structure layer (32) are both larger than the aperture of the first hole section, the first collapse structure layer (31) is penetrated in the first hole section, and the second collapse structure layer (32) is penetrated in the second hole section.

16. The battery device according to claim 1, wherein: The rib plate (121) is welded or bonded to the first structural layer (11), and / or the first structural layer (11) has an assembly groove, and a portion of the rib plate (121) is embedded in the assembly groove.

17. The battery device according to claim 1, wherein: The mounting sleeve (30) is an integrally formed part.

18. The battery device according to claim 1, wherein: The mounting beam (2022) has at least one cavity (204), and the mounting hole (205) is connected to at least one of the cavities (204).

19. An electrical device, characterized in that: A battery device comprising the battery device according to any one of claims 1 to 18.

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