CN218385497U

CN218385497U - Supporting component, battery box body, battery and electric equipment

Info

Publication number: CN218385497U
Application number: CN202222112214.0U
Authority: CN
Inventors: 赵鹏博; 王勇; 刘瑞堤; 王庆; 张伟
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2023-01-24
Anticipated expiration: 2032-08-11

Abstract

A support assembly, a battery box body, a battery and electric equipment are provided. The support assembly includes: at least two layers of plate material (20a, 20b, 20c), wherein the at least two layers of plate material (20a, 20b, 20c) are arranged in a stacking mode, and a spacing space (g 1, g 2) is arranged between adjacent layers of plate material in the at least two layers of plate material (20a, 20b, 20c); and a support structure (30) disposed in the spacing spaces (g 1, g 2), the support structure (30) including a plurality of cavity portions (31), at least a portion of the plurality of cavity portions (31) extending in a first direction (r 1), the first direction (r 1) intersecting both of the opposing surfaces (S1, S2) of the adjacent sheet material layers.

Description

Supporting component, battery box body, battery and electric equipment

Technical Field

The disclosure relates to the technical field of batteries, in particular to a supporting assembly, a battery box body, a battery and electric equipment.

Background

The secondary battery, especially the lithium ion battery, has the advantages of high voltage, large specific energy, long cycle life, no pollution, wide working temperature range, small self-discharge and the like, is widely applied to portable electronic equipment and power equipment of large-scale new energy electric vehicles, and has great significance for solving the human environmental pollution and energy crisis. There is a need for further improvements in the case for housing battery cells for batteries.

SUMMERY OF THE UTILITY MODEL

In one aspect of the present disclosure, there is provided a support assembly comprising:

the laminated plate comprises at least two plate layers, wherein the at least two plate layers are arranged in a laminated manner, and a spacing space is arranged between adjacent plate layers in the at least two plate layers; and

a support structure disposed in the spacing space, the support structure including a plurality of cavity portions, at least a portion of the plurality of cavity portions extending in a first direction that intersects each of the opposing surfaces of the adjacent layers of sheet material.

Through the interval space setting a plurality of cavity portions between the adjacent sheet material layer of range upon range of setting to make at least some of a plurality of cavity portions all extend along the first direction of crossing with the relative surface on adjacent sheet material layer, thereby make supporting component can provide reliable supporting role to the sheet material layer through the real material that forms the cavity portion in the bearing structure when bearing outside pressure, and a plurality of cavity portions can be in interval space distribution of wider range, when promoting the holistic supporting effect of supporting component, reduce supporting structure's weight, make supporting component lighter-weight.

In some embodiments, the first direction perpendicularly intersects both of the opposing surfaces of the adjacent layers of sheet material.

By extending at least a part of the plurality of cavity parts along the first direction which is perpendicularly intersected with the opposite surfaces of the adjacent plate layers, the bearing capacity of the support assembly can be improved to a greater extent, and further weight reduction or thinning of the support assembly is facilitated.

In some embodiments, the first direction intersects each of the opposing surfaces of the adjacent layers of sheet material at an acute angle.

By extending at least a portion of the plurality of cavity portions in a first direction that intersects opposite surfaces of adjacent layers of sheet material at an acute angle, the distribution range of the support assemblies in the spacing space can be increased while meeting the pressure-bearing requirements of the support assemblies.

In some embodiments, the first direction intersects one of the opposing surfaces of the adjacent sheet material layer at an acute angle and intersects the other of the opposing surfaces of the adjacent sheet material layer perpendicularly.

At least a portion of the plurality of cavities may extend in a first direction that intersects the opposing surfaces of adjacent sheet layers at acute and right angles, respectively, to match different pressure bearing distributions and thickness distribution requirements of the sheet layers, depending on the actual application.

In some embodiments, the first direction intersects the opposing surface at an angle Q that satisfies: q is more than or equal to 75 degrees and less than or equal to 90 degrees.

For an included angle Q formed by the first direction and any one of the opposite surfaces, when the included angle Q is 90 degrees, the pressure direction of the cavity parts to the opposite surfaces is parallel to the first direction, and then a large pressure bearing effect can be realized; when the angle Q is too small, the force component in the direction in which the pressure of the plurality of cavities against the opposing surface is resolved to the direction perpendicular to the opposing surface is small, and the supporting function becomes weak. Therefore, the included angle Q is more than or equal to 75 degrees and less than or equal to 90 degrees, the supporting effect of the supporting structure on the board layer can be improved, and the supporting effect of the supporting component is effectively improved.

In some embodiments, the plurality of cavities are spaced apart along one or more second directions parallel to one of the opposing surfaces.

By arranging the plurality of cavity parts at intervals along one or more second directions parallel to one of the opposite surfaces, the plurality of cavity parts can be distributed between the adjacent plate layers in a wider range and more uniformly, the pressure is dispersed when the supporting assembly bears the pressure, the risk that the supporting assembly is crushed is reduced, and the requirements on the material strength and the using amount of the supporting structure can be correspondingly reduced while the pressure bearing requirement is met.

In some embodiments, the support structure is integrally formed.

The support structure can be integrally formed before being placed in the spacing space between adjacent sheet material layers, which on the one hand facilitates an improvement of the assembly efficiency and on the other hand makes it possible to obtain a more stable support effect by means of the integrally formed support structure.

In some embodiments, in a cross section parallel to one of the opposing surfaces, a minimum distance d between two adjacent ones of the plurality of cavity portions is smaller than a cross-sectional maximum width W1 of either of the two adjacent cavity portions.

In the plurality of cavity parts, the part between two adjacent cavity parts can comprise solid materials for forming the cavity parts, and the maximum width W1 of the hollow cross section of each cavity part is larger than the minimum distance d between two adjacent cavity parts, so that the amount of the solid materials in the supporting structure can be reduced, the supporting effect is met, meanwhile, the amount of the materials for forming the supporting structure is reduced, and the cost and the weight are reduced.

In some embodiments, the minimum spacing d satisfies: d is more than or equal to 0.5mm and less than or equal to 4mm; and/or, the section maximum width W1 satisfies: w1 is more than or equal to 2.3mm and less than or equal to 17.3mm.

If the minimum distance d between two adjacent cavity parts is too small, the cavity parts are easy to deform or damage under pressure; if the minimum spacing d is too large, more solid material needs to be used, resulting in increased cost and weight. Therefore, by making the minimum pitch d satisfy: d is not less than 0.5mm and not more than 4mm, so that the good pressure bearing effect and the reduction of cost and weight can be considered. If the maximum width W1 of the cross section is too small, more cavity parts need to be arranged on a unit area, so that the supporting structure is more complicated, the manufacturing difficulty is improved, the material quantity of the supporting component is easily increased, and the whole body is heavier; if the cross-sectional maximum width W1 is too large, the dispersion effect of the supporting force by the supporting structure may be affected, thereby weakening the supporting function of the supporting structure. Therefore, by making the section maximum width W1 satisfy: w1 is more than or equal to 2.3mm and less than or equal to 17.3mm, so that the simplification and weight reduction of the supporting structure and the dispersion effect of the supporting structure can be considered.

In some embodiments, at least a portion of the plurality of cavity portions are each regular hexagonal in cross-sectional shape and equal in cross-sectional size in a cross-section parallel to one of the opposing surfaces.

The cross-sectional shapes of at least a part of the hollow holes are regular hexagons, and the cross-sectional dimensions are equal, so that a honeycomb type local or integral supporting structure can be formed, the honeycomb type supporting structure is very stable, the supporting performance is good, and the integral supporting performance of the supporting component can be effectively improved.

In some embodiments, the support structure comprises a plurality of tubes, at least portions of the plurality of tubes being independently molded, and the plurality of cavity portions comprise a first cavity defined by an inner wall of each tube.

The supporting structure is formed by at least part of the independently formed pipe body, the first cavity surrounded by the inner wall of the pipe body is used as the cavity part, the difficulty of forming the supporting structure is reduced, the pipe body is easy to obtain or manufacture, and the manufacturing cost of the supporting assembly is reduced.

In some embodiments, the plurality of cavities further comprises a second cavity surrounded by outer walls of adjacent tubes of the plurality of tubes.

For a plurality of tube bodies capable of forming gaps between adjacent tube bodies, the second cavity surrounded by the outer wall of the adjacent tube body can also be used as the cavity part, so that more cavity parts can be formed in a more convenient manner.

In some embodiments, the first cavity has a cross-sectional maximum width W2 greater than the minimum wall thickness t of the tubular body in a cross-section parallel to one of the opposing surfaces.

In the plurality of cavity portions formed by the plurality of tube bodies, by making the sectional maximum width W2 of the first cavity larger than the minimum wall thickness t of the tube body, it is possible to reduce the amount of material of the tube body in the support structure and reduce the cost and weight of the support structure while satisfying the support effect.

In some embodiments, the cross-sectional maximum width W2 satisfies: w2 is more than or equal to 3mm and less than or equal to 15mm; and/or the minimum wall thickness t satisfies: t is more than or equal to 0.5mm and less than or equal to 4mm.

If the maximum width W2 of the cross section is too small, more cavity parts need to be arranged on a unit area, so that the supporting structure is more complicated, the manufacturing difficulty is improved, the material quantity of the pipe body is easily increased, and the whole body is heavier; if the cross-sectional maximum width W2 is too large, the dispersion effect of the supporting force by the supporting structure may be affected, thereby weakening the supporting function of the supporting structure. Therefore, by making the section maximum width W2 satisfy: w1 is more than or equal to 3mm and less than or equal to 15mm, so that the simplification and weight reduction of the supporting structure and the dispersion effect of the supporting structure can be considered. If the minimum wall thickness t is too small, deformation or damage is likely to occur when pressure is applied; if the minimum wall thickness t is too large, more material needs to be used, resulting in increased cost and weight. Therefore, by making the minimum wall thickness t satisfy: t is more than or equal to 0.5mm and less than or equal to 4mm, so that the good pressure bearing effect and the reduction of cost and weight can be considered.

In some embodiments, at least a portion of the plurality of tubes, in a cross-section parallel to one of the opposing surfaces, are each circular in cross-sectional shape and equal in cross-sectional size.

Circular tubes with a circular cross-sectional shape are easier to obtain or manufacture, and can achieve greater support performance than other shapes with the same amount of material.

In some embodiments, the opposed surfaces of the adjacent sheet material layers have a first region and a second region, the opposed surfaces of the adjacent sheet material layers forming the spacing space in the first region and being disposed in abutment in the second region.

In order to improve the connection reliability of the support assembly and other structures, the first area is arranged on the opposite surface of the adjacent plate layer to accommodate the support structure, and the second area with the opposite surface attached is arranged, so that the part of the support assembly corresponding to the second area can be used for connecting other structures, the connection strength is improved, and the first area can be used for bearing pressure, so that the use requirements of different parts of the support assembly are met.

In some embodiments, the second region is located at an outer edge of the first region and encloses the first region.

The second area is arranged on the outer edge of the first area and encloses the first area, so that the closed space for accommodating the first area of the supporting structure can be formed by the surface-attached second area, the supporting structure is more stably restrained in the space, and the overall bearing capacity and stability of the supporting assembly are improved.

In some embodiments, the first region is provided in plurality, the first regions are spaced apart from each other, and the second region is provided at an outer edge of each of the first regions.

According to the form of other structures connected with the supporting assembly, the first areas can be arranged in a plurality of numbers, the first areas are mutually separated, and the second areas surround the outer edges of the first areas, so that the connection of different parts (such as outer edges or middle cross beams and the like) of other structures can be realized through the second areas, and the pressure-bearing requirements of different areas can be met through the first areas.

In some embodiments, in the stacking direction of the at least two sheet material layers, a portion of at least one outer surface of the at least two sheet material layers corresponding to the first region is raised relative to a portion corresponding to the second region.

For the outer surfaces of at least two plate layers, the part corresponding to the first area is raised relative to the part corresponding to the second area, so that the part containing the supporting structure in the supporting component mainly bears pressure, the supporting effect is improved, and in addition, the raised structure can realize the coarse positioning effect when the supporting component is connected with other structures.

In some embodiments, in the stacking direction of the at least two sheet material layers, an outer surface of at least one side of the at least two sheet material layers is a plane.

Through setting up the surface of at least one side with at least two panel layers into the plane, can place more steadily on even surface through this side plane, the atress is also more even, avoids stress concentration.

In some embodiments, the material of at least a portion of the at least two layers of sheet material comprises metal and the material of the support structure comprises metal to enable the support structure to be in welded connection with at least one of the opposing surfaces of the adjacent layers of sheet material.

By making the material of at least a part of at least two sheet material layers comprise metal and making the material of the support structure also comprise metal, a tight and fixed connection between different sheet material layers and of the support structure between adjacent sheet material layers can be achieved by means of welding.

In some embodiments, the material of at least a portion of the at least two layers of sheet material comprises plastic and the material of the support structure comprises plastic to enable the support structure to be heat staked to at least one of the opposing surfaces of the adjacent layers of sheet material.

By making the material of at least a part of at least two layers of sheet material comprise plastic and making the material of the support structure also comprise plastic, a tight and fixed connection between different layers of sheet material and between adjacent layers of sheet material of the support structure can be achieved by means of hot melting.

In some embodiments, the support assembly further comprises:

and the reinforcing layer covers the outer surface of at least one side of the at least two sheet layers along the lamination arrangement direction of the at least two sheet layers.

The outer surfaces of at least two plate layers are covered with the strengthening layers, so that the surface strength of the supporting component can be further improved, and the wear resistance and the scratch resistance of the supporting component are improved.

In one aspect of the present disclosure, there is provided a battery case comprising the aforementioned support assembly,

wherein the support assembly is configured to form at least one wall of the battery case.

The support component is adopted to form at least one wall body of the battery box body, so that the support performance of the battery box body can be improved, and the weight of the battery box body can be reduced.

In some embodiments, the battery case includes:

the box body is provided with a holding tank; and

a cover disposed at an open end of the receiving groove and configured to cover the receiving groove,

wherein the support assembly is configured to form a bottom wall of the case body.

Set the diapire of box body with supporting component, can simplify the structure of battery box, improve the support performance of diapire to can protect battery box self and inside battery monomer better when the battery box receives the extrusion or the collision that come from diapire one side.

In some embodiments, the box body comprises a box frame, at least two of the sheet material layers in the support assembly being arranged one above the other to form a stacked structure, the stacked structure comprising:

the supporting structure is arranged between at least part of adjacent layers of plates in the first laminating area; and

the second laminating area is used for sequentially laminating all the plates of adjacent layers in the second laminating area along the laminating direction;

and the second stacking area is fixedly connected with the box body frame.

Set up bearing structure or laminate in proper order and set up the different range upon range of district that divides laminated structure according to setting up between the adjacent layer panel to make all adjacent layer panels laminate second range upon range of district and box frame fixed connection that sets up along range upon range of setting up the direction in proper order, can make the supporting component who is the diapire can be more reliable with the fixed connection between the box frame.

In some embodiments, at least a portion of the second lamination zone is welded to the tank frame.

The fixed connection between at least part of the second laminating area and the box body frame is realized through a welding mode, and the assembly efficiency can be improved.

In some embodiments, at least a portion of the second stacking section is fixedly attached to the bottom surface of the tank frame by friction stir welding.

The welding mode of friction stir welding can form a compact welding seam between the second laminating area and the lower surface of the box body frame, so that the connection is more reliable, the welding process can be realized through unilateral operation, and auxiliary materials such as welding wires and the like are not needed, so that the welding process is more convenient and faster.

In some embodiments, at least a portion of the second stacking zone is fixedly coupled to the case frame by screws.

At least part of the second laminating area can be fixedly connected with the box body frame through screws, the connecting mode does not need to have special requirements on materials or connecting positions like a welding mode, and threaded holes or nuts do not need to be arranged in advance like a bolt connecting mode, so that the use is more convenient and faster.

In some embodiments, at least a portion of the second stacking zone is fixedly connected to a lower surface of the case frame by flow drill screws.

The fixed connection mode that adopts the flow to bore the screw can realize the fixed connection between different materials, need not trompil in advance to can accomplish the connection through unilateral operation, consequently connect more conveniently, also be fit for the fixed connection of different positions.

In some embodiments, the second stacking zone includes a plurality of peripheral zones located at peripheral edges of the support member and a connecting zone connected between the peripheral zones and separating the first stacking zone, the peripheral zones are welded and/or fixedly connected to the box frame by screws, and the connecting zone is fixedly connected to the box frame by screws.

When the second stacking area comprises the outer edge area and the connecting area for separating the first stacking area, the outer edge area can be fixedly connected with the box body frame in a welding mode, the connecting area can also be fixedly connected with the box body frame in a screw mode, the connecting area can be fixedly connected with the box body frame in a screw mode, and the connecting area can be fixedly connected with the box body frame in a screw mode, so that the connecting area between the outer edge areas and the cross beam or the longitudinal beam in the box body frame can be more conveniently fixedly connected.

In some embodiments, the battery case includes:

the box body is provided with a holding tank; and

wherein the support assembly is configured to form a side wall of the case body.

The support component can form the side wall of the box body, so that the structure of the battery box body is simplified, and the support performance of the side wall is improved, so that the battery box body and the battery monomer in the battery box body can be better protected when the battery box body is extruded or collided in the lateral direction.

In some embodiments, the battery case includes:

the box body is provided with a holding tank; and

wherein the support assembly is configured to form the case lid.

The support assembly may form a case cover to simplify a structure of the battery case body, and improve a support performance of the case cover so that the battery case body itself and the battery cells inside thereof can be better protected when the battery case body is pressed or collided from one side of the case cover.

In one aspect of the present disclosure, there is provided a battery including:

a battery cell; and

the battery box is configured to accommodate the battery cell.

The battery adopting the battery box body can realize better use safety.

In one aspect of the present disclosure, there is provided an electric device including:

the battery is used for providing electric energy.

The electric equipment adopting the battery can realize better use safety.

In some embodiments, the powered device further comprises:

a battery housing compartment configured to house the battery; and

and the operating cabin is separated from the battery accommodating cabin through the supporting assembly.

For the electric equipment with the operation cabin, the supporting component can be used as a box cover or a bottom wall of the battery box body to separate the battery accommodating cabin from the operation cabin, so that the occupied space of the battery is reduced, and the use safety of the electric equipment is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings described below are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:

FIG. 1 is a schematic block diagram of some embodiments of a powered device according to the present disclosure;

fig. 2 is an exploded schematic view of some embodiments of a battery according to the present disclosure;

FIG. 3A is a schematic structural view of some embodiments of a support assembly according to the present disclosure;

FIG. 3B is an exploded view of FIG. 3A;

FIGS. 4A and 4B are schematic structural views of further embodiments of support assemblies according to the present disclosure;

FIG. 5A is a schematic structural view of still other embodiments of support assemblies according to the present disclosure;

FIG. 5B is an exploded schematic view of FIG. 5A;

FIG. 6A is a schematic structural view of a support structure in accordance with some embodiments of the support assembly of the present disclosure;

FIG. 6B is an enlarged schematic view of area A of FIG. 6A;

FIG. 6C is an enlarged schematic view of a portion of a support structure in accordance with some embodiments of the support assembly of the present disclosure;

fig. 7A is a schematic view of a section of the opposing surfaces of adjacent sheet material layers at a viewing angle parallel to the opposing surfaces in some embodiments of support assemblies according to the present disclosure;

fig. 7B and 7C are schematic views of a subdivision of the opposing surfaces of adjacent sheet material layers in a view perpendicular to the opposing surfaces in accordance with some embodiments of the support assembly of the present disclosure, respectively;

FIG. 8 is a schematic structural view of still further embodiments of support assemblies according to the present disclosure;

FIG. 9 is an exploded schematic view of some embodiments of a battery case according to the present disclosure;

FIGS. 10 and 11 are schematic views of the connection structure of the case frame and the support assembly, respectively, according to some embodiments of the battery case of the present disclosure;

FIG. 12A is an exploded schematic view of other embodiments of battery cases according to the present disclosure;

fig. 12B is a structural view of the mounting structure of the battery case shown in fig. 12A at a bottom view angle;

FIG. 12C is a schematic view of the AA cross-section of FIG. 12B;

fig. 12D is a schematic structural view of the BB section in fig. 12B.

It should be understood that the dimensions of the various parts shown in the figures are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.

Description of the reference numerals:

10: a battery case; 11: a box body; 12: a box cover; 111: a bottom wall; 112: a side wall; 113: a box frame; 13: a flow drill screw;

20a,20b,20 c: a sheet layer;

30: a support structure; 31: a cavity portion; 32: a tube body; 311: a first cavity; 312: a second cavity;

40: a strengthening layer;

50: a battery; 51: a battery cell;

60: a vehicle; 61: a battery housing compartment; 62: and (6) operating the cabin.

Detailed Description

Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the disclosure, but are not intended to limit the scope of the disclosure, i.e., the disclosure is not limited to the described embodiments.

In the description of the present disclosure, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship merely to facilitate the description of the disclosure and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be taken as limiting the disclosure. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "vertical" is not strictly vertical but is within the tolerance of the error. "parallel" is not strictly parallel but within the tolerance of the error.

The directional terms used in the following description are intended to be illustrative in all directions, and are not intended to limit the present disclosure to specific configurations. In the description of the present disclosure, it is further noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood as appropriate to one of ordinary skill in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The features in the embodiments described below may be combined with each other without conflict.

In some related arts, the bottom plate assembly of the battery case includes a bottom plate welded to the case frame, cushion foam, a bottom guard plate fixedly connected to the case frame by bolts, and the cushion foam is filled between the bottom plate and the bottom guard plate. Research shows that the base plate assembly has more related parts, and the bolt connection needs to be processed with holes and rivet nuts in advance, so the assembly process is time-consuming and complicated, and the cost is higher.

In view of this, the embodiment of the present disclosure provides a support assembly, a battery box, a battery and an electric device, which can meet the requirement of the battery box in the aspect of supporting, improve the use safety, simplify the assembly process of the battery box, improve the assembly efficiency, and reduce the cost.

The support assembly of the embodiments of the present disclosure may be adapted to the battery housing, for example, such that the support assembly forms at least one wall of the battery housing. The support assembly may also be adapted for use with other equipment such as cargo carrying cabinets and the like.

The battery box body of the embodiment of the disclosure is applicable to various batteries so as to accommodate single batteries or battery modules. The battery can be used for various electric equipment using the battery. The electric equipment may be a mobile phone, a portable device, a notebook computer, a battery car, an electric car, a ship, a spacecraft, an electric toy, an electric tool, and the like, for example, the spacecraft includes an airplane, a rocket, a space plane, a spacecraft, and the like, the electric toy includes a stationary or mobile electric toy, for example, a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the electric tool includes a metal cutting electric tool, an abrasive electric tool, an assembly electric tool, and an electric tool for railways, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an electric drill impact, a concrete vibrator, and an electric planer. The embodiment of the present disclosure does not particularly limit the electric device.

The battery module arranged in the battery box body can comprise a plurality of battery monomers which are connected in series, in parallel or in series-parallel. The battery cell is the smallest unit constituting the battery. The battery cell includes an electrode assembly capable of electrochemical reaction. The battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in the embodiments of the present disclosure. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, and the embodiment of the present disclosure is not limited thereto.

Fig. 1 is a schematic structural diagram of some embodiments of a powered device according to the present disclosure. For convenience, the electric device will be described as an example of a vehicle. The vehicle 60 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or the like. The battery 50 may be provided at the bottom or the head or tail of the vehicle 60.

The battery 50 may be used to power the vehicle 60, for example, the battery 50 may be used as an operating power source for the vehicle 60 for circuitry of the vehicle 60, such as for power requirements for operation during start-up, navigation, and operation of the vehicle 60. The battery 50 may serve not only as an operating power source for the vehicle 60 but also as a driving power source for the vehicle 60, instead of or in part replacing fuel or natural gas to provide driving power for the vehicle 60.

The vehicle 60 may also include axles, wheels, motors, and a controller for controlling the power supplied from the battery 50 to the motors, for example, when the vehicle 60 uses the battery 50 as a driving power source, the controller may provide the motors with the required power for uniform speed and acceleration. The motor is used for driving the axle to rotate so as to drive the wheels to rotate.

Referring to fig. 1, in some embodiments, the powered device further comprises: a battery housing compartment 61 and an operation compartment 62. The battery housing case 61 is configured to house the battery 50. The operating compartment 62 may be a cab of the vehicle 60 (schematically shown by a dashed-line box in fig. 1, and a battery housing compartment 61 (schematically shown by a two-dot chain line box in fig. 1) may be provided under the cab of the vehicle 60. The operating compartment 62 may be separated from the battery housing compartment 61 by a support member, so that, for a power-consuming apparatus having the operating compartment, the operating compartment 62 and the battery housing compartment 61 may be separated by using the support member having good support performance as a cover or a bottom wall of a battery box body, thereby improving the safety of the power-consuming apparatus while reducing the occupation of battery space.

Fig. 2 is a schematic structural diagram of some embodiments of a battery according to the present disclosure. Referring to fig. 2, in some embodiments, the battery 50 includes a battery cell 51 and a battery case 10, and the battery case 10 is configured to accommodate the battery cell 51 and provide functions such as cooling, sealing, impact resistance, and the like to the battery cell, or prevent liquid or other foreign materials from adversely affecting the charging and discharging or safety of the battery cell. The battery cells 51 may include a plurality of cells and be electrically connected (e.g., in series, parallel, or series-parallel) to each other to achieve desired electrical performance parameters of the battery 50. The plurality of battery cells 51 may be arranged in a row, and one or more rows of battery cells 51 may be arranged in the battery case 10 as necessary.

In some embodiments, the plurality of battery cells 51 may be arranged along at least one of a length direction and a width direction of the battery case 10. At least one row or column of the battery cells 51 can be arranged according to actual needs. One or more layers of the battery cells 51 may be provided in the height direction of the battery 50 as needed.

In some embodiments, a plurality of battery cells 51 may be connected in series or in parallel or in series-parallel to form a battery module, and then a plurality of battery modules are connected in series or in parallel or in series-parallel to form a whole, and are accommodated in the battery box 10. In other embodiments, all the battery cells 51 are directly connected in series or in parallel or in series-parallel, and the whole of all the battery cells 51 is accommodated in the battery box 10.

The battery cell 51 may include: a housing, an electrode assembly, and an end cap assembly. The battery cell 51 also includes an electrolyte therein. The case has a cavity for accommodating the electrode assembly and an end opening communicating with the cavity. The case is determined according to the shape of one or more electrode assemblies, and may be a hollow rectangular parallelepiped, or a hollow cube, or a hollow cylinder. The housing may be made of a material of electrically conductive metal or plastic, alternatively the housing is made of aluminum or an aluminum alloy.

The end cap assembly is disposed at the end opening to form a sealed cavity with the case to accommodate the electrode assembly. The end cap assembly may include two poles with opposite polarities and electrically connected to the tabs on the corresponding polarity pole pieces in the electrode assembly via the connecting assembly or directly.

The electrode assembly may include a positive electrode tab, a negative electrode tab, and a separator between the positive and negative electrode tabs. The operation of the battery cell is realized by the movement of internal metal ions between the positive pole piece and the negative pole piece.

The positive pole piece comprises a positive current collector and a positive active material layer. The positive electrode tab is connected or formed on the positive electrode current collector. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be a lithiation material capable of providing lithium ions, such as lithium cobaltate, lithium iron phosphate, ternary lithium, or lithium manganate. In the case where the positive electrode current collector and the positive electrode active material layer are bonded with a binder, the binder may be PVDF (Polyvinylidene Fluoride) or the like.

The negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer. The negative pole tab is connected and activated on the negative pole current collector. Taking a lithium ion battery as an example, the material of the negative electrode current collector may be copper, and the negative electrode active material may be a material capable of storing lithium ions, such as graphite, silicon, lithium titanate, and the like. In the case of bonding the negative electrode current collector and the negative electrode active material layer with a binder, the binder may be carboxymethyl cellulose, epoxy resin, styrene-butadiene rubber, or the like.

The material of the separator may be PP (polypropylene) or PE (polyethylene). The electrolyte comprises an electrolyte and a solvent, wherein the electrolyte is organic metal salt, inorganic salt and the like and can provide metal ions shuttling between the positive pole piece and the negative pole piece. In order to ensure sufficient overcurrent capacity, the number of the positive electrode tabs may be plural and stacked together, and the number of the negative electrode tabs may be plural and stacked together. In addition, the electrode assembly may have a winding type structure or a lamination type structure, and the embodiment of the present disclosure is not limited thereto.

Fig. 3A is a schematic structural view of some embodiments of a support assembly according to the present disclosure. Fig. 3B is an exploded schematic view of fig. 3A. Fig. 4A and 4B are schematic structural views of other embodiments of a support assembly according to the present disclosure, respectively. Fig. 5A is a schematic structural view of still other embodiments of support assemblies according to the present disclosure. Fig. 5B is an exploded view of fig. 5A.

Referring to fig. 3A through 5B, the present disclosure provides a support assembly comprising: at least two layers of sheet material and a support structure 30. At least two panel layers are stacked, and a spacing space is arranged between adjacent panel layers in the at least two panel layers. The sheet material layer is a thin plate-shaped material having a certain surface area and thickness, such as a metal plate or a plastic plate. At least two sheet layers can be stacked in a predetermined stacking direction, for example two

sheet layers

20a and 20b in fig. 3A in the stacking direction z, and for example three

sheet layers

20a,20b and 20c in fig. 5A in the stacking direction z.

The number of layers of the sheet material can be selected according to the actual need, for example two or three. The three sheet layers and the supporting structure 30 which are sequentially stacked can be integrally formed in a one-time hot pressing or one-time brazing mode, and a better bearing effect can be obtained. The support structure formed by two laminated plate layers is lighter and more convenient to manufacture.

Depending on the number of sheet layers, at least two sheet layers may form at least one group of adjacent sheet layers, such as the

adjacent sheet layers

20a and 20b shown in fig. 3A, with a spacing space g1 between the group of

adjacent sheet layers

20a and 20 b. For example, in the two adjacent plate layers shown in fig. 5A, a spacing space g1 is provided between the first adjacent plate layers 20a and 20b and a spacing space g2 is provided between the second adjacent plate layers 20b and 20c in the stacking direction z.

It should be noted that, for a plurality of sheet material layers, a spacing space may be provided between each group of adjacent sheet material layers, or a spacing space may be provided between some groups of adjacent sheet material layers, and another part of groups of adjacent sheet material layers are directly attached to each other without a spacing space.

Support structures 30 are provided in the spaced-apart spaces and may provide support to opposing surfaces of adjacent layers of sheet material. For example, in fig. 3B, the opposing surfaces S1 and S2 of the adjacent sheet layers 20a and 20B may be supported by the support structure 30, and for example, in fig. 5B, for a first set of adjacent sheet layers 20a and 20B and a second set of adjacent sheet layers 20B and 20c along the stacking direction z, the opposing surfaces S1 and S2 of both sets of adjacent sheet layers may be supported by the support structure 39.

Referring to fig. 3B and 5B, the support structure 30 includes a plurality of cavity portions 31, at least a portion of the plurality of cavity portions 31 extending in a first direction r1, the first direction r1 intersecting with each of the opposing surfaces of the adjacent sheet material layers. The cavity portion may be a through hole extending in the first direction r1 and penetrating therethrough, a blind hole extending in the first direction r1 and having one end or a middle portion closed, or a tubular cavity extending in the first direction r1 and including at least one closed end.

Referring to fig. 3A, 3B, and 5B, in some embodiments, the first direction r1 perpendicularly intersects both of the opposing surfaces S1, S2 of the adjacent layers of sheet material. In fig. 3A, it can be seen that the first direction r1 is at an angle Q of 90 ° to both of the opposing surfaces S1 and S2. By extending at least a part of the plurality of cavity portions in a first direction perpendicularly intersecting with both of the opposite surfaces of the adjacent sheet material layers, the bearing capacity of the support assembly can be improved to a greater extent, which is beneficial to further weight reduction or thinning of the support assembly.

Referring to fig. 4A, in some embodiments, the first direction r1 intersects both of the opposing surfaces S1, S2 of the adjacent layers of sheet material at an acute angle. As can be seen in fig. 4A, the first direction r1 is at an acute angle to the opposing surfaces S1 and S2. By extending at least a portion of the plurality of cavity portions in a first direction that intersects opposite surfaces of adjacent layers of sheet material at an acute angle, the distribution range of the support assemblies in the spacing space can be increased while meeting the pressure-bearing requirements of the support assemblies.

In fig. 4A, the first direction r1 is inclined at a predetermined angle, for example, an acute angle, with respect to the stacking direction z of at least two sheet material layers. In other embodiments, the first direction r1 may be parallel to the stacking direction z.

Referring to fig. 4B, in some embodiments, the first direction r1 intersects one of the opposing surfaces S1, S2 of the adjacent sheet layer at an acute angle and perpendicularly intersects the other of the opposing surfaces S1, S2 of the adjacent sheet layer. In fig. 4B, the first direction r1 intersects perpendicularly with the surface S1 of the sheet layer 20a on the side adjacent to the sheet layer 20B, and intersects at an acute angle with the surface S2 of the sheet layer 20B on the side adjacent to the sheet layer 20 a. Thus, at least a portion of the plurality of cavities may extend in a first direction that intersects the opposing surfaces of adjacent sheet layers at acute and right angles, respectively, to match different pressure bearing distributions and thickness distribution requirements of the sheet layers, depending on the actual requirements of the application.

In the above embodiment, the first direction r1 and the opposing surfaces S1 and S2 intersect at an included angle Q which satisfies: q is more than or equal to 75 degrees and less than or equal to 90 degrees. For an included angle Q formed by the first direction and any one of the opposite surfaces, when the included angle Q is 90 degrees, the pressure direction of the cavity parts to the opposite surfaces is parallel to the first direction, and then a large pressure bearing effect can be realized; when the angle Q is too small, the force component in which the pressure of the plurality of cavities against the opposing surface is resolved in the direction perpendicular to the opposing surface is small, and the supporting function becomes weak. Therefore, the included angle Q is more than or equal to 75 degrees and less than or equal to 90 degrees, the supporting effect of the supporting structure on the board layer can be improved, and the supporting effect of the supporting component is effectively improved.

Fig. 6A is a schematic structural view of a support structure in some embodiments of a support assembly according to the present disclosure. Fig. 6B is an enlarged schematic view of the region a in fig. 6A. Fig. 6C is an enlarged schematic view of a portion of a support structure in some embodiments of a support assembly according to the present disclosure.

Referring to fig. 6A, in some embodiments, the plurality of cavity portions 31 are spaced apart along one or more second directions, which may be parallel to one of the opposing surfaces of the adjacent sheet material layers. In fig. 6A, the overall profile of the support structure 30 in a cross section perpendicular to the stacking direction z may be rectangular, with one set of opposite sides parallel to the direction x and the other set of opposite sides parallel to the direction y.

The plurality of cavity portions 31 in fig. 6B may be arranged at intervals along both second directions r2 and r3, wherein the two second directions r2 and r3 are acute angles, and the second direction r2 may be parallel to the direction x. For another example, in fig. 6C, the plurality of cavity portions 31 may be arranged at intervals along both second directions r2 and r3, where the two second directions r2 and r3 are perpendicular to each other and are parallel to the direction x and the direction y, respectively.

For embodiments where the opposing surfaces S1 and S2 are parallel to each other, the second direction may be parallel to either of the opposing surfaces S1 and S2, while for non-parallel opposing surfaces S1 and S2, the second direction may be parallel to either surface S1 or surface S2.

In the embodiment, the plurality of cavity parts are arranged at intervals along one or more second directions parallel to one of the opposite surfaces, so that the plurality of cavity parts can be distributed more widely and uniformly between the adjacent plate layers, the pressure is dispersed when the support assembly bears the pressure, the risk that the support assembly is crushed is reduced, and the requirements on the material strength and the dosage of the support structure can be correspondingly reduced while the pressure bearing requirement is met.

Referring to fig. 6A and 6B, in some embodiments, the support structure 30 is integrally formed. In other words, the support structure 30 can be integrally formed before being placed in the interspaces between adjacent sheet-metal layers, which on the one hand contributes to an improved assembly efficiency and on the other hand makes it possible to obtain a more stable support effect with the integrally formed support structure.

Referring to fig. 6B, in some embodiments, in a cross section parallel to one of the opposite surfaces S1, S2, a minimum distance d between adjacent two cavity portions 31 of the plurality of cavity portions 31 is smaller than a cross-sectional maximum width W1 of any one of the adjacent two cavity portions 31. In the plurality of cavity parts, the part between two adjacent cavity parts can comprise solid materials for forming the cavity parts, and the maximum width W1 of the hollow cross section of each cavity part is larger than the minimum distance d between two adjacent cavity parts, so that the amount of the solid materials in the supporting structure can be reduced, the supporting effect is met, meanwhile, the amount of the materials for forming the supporting structure is reduced, and the cost and the weight are reduced.

In fig. 6B, the minimum spacing d may satisfy: d is more than or equal to 0.5mm and less than or equal to 4mm, for example, d can be 1mm, 1.5mm, 2.4mm, 3.2mm and the like. If the minimum distance d between two adjacent cavity parts is too small, the cavity parts are easy to deform or damage under pressure; if the minimum spacing d is too large, more solid material needs to be used, resulting in increased cost and weight. Therefore, by making the minimum pitch d satisfy: d is not less than 0.5mm and not more than 4mm, so that the good pressure bearing effect and the reduction of cost and weight can be considered.

In fig. 6B, the section maximum width W1 may satisfy: w1 is more than or equal to 2.3mm and less than or equal to 17.3mm, for example, W1 can be 3.5mm, 6mm, 8.4mm, 12.5mm, 15.7mm and the like. If the maximum width W1 of the cross section is too small, more cavity parts need to be arranged on a unit area, so that the supporting structure is more complicated, the manufacturing difficulty is improved, the material quantity of the supporting component is easily increased, and the whole body is heavier; if the cross-sectional maximum width W1 is too large, the dispersion effect of the supporting force by the supporting structure may be affected, thereby weakening the supporting function of the supporting structure. Therefore, by making the section maximum width W1 satisfy: w1 is more than or equal to 2.3mm and less than or equal to 17.3mm, so that the simplification and weight reduction of the supporting structure and the dispersion effect of the supporting structure can be considered.

To further improve the overall support performance of the support assembly, referring to fig. 6B, in some embodiments, at least a portion of the cavity portions 31 of the plurality of cavity portions 31 have a regular hexagonal cross-sectional shape and an equal cross-sectional size in a cross-section parallel to one of the opposing surfaces S1, S2. The cavity part in the shape can form a honeycomb type local or integral supporting structure, and the honeycomb type supporting structure is very stable and has good supporting performance, so that the integral supporting performance of the supporting assembly can be effectively improved.

Referring to fig. 6C, in some embodiments, the support structure 30 includes a plurality of tubes 32, at least a portion of the plurality of tubes 32 is molded separately, and the plurality of cavities 31 includes a first cavity 311 surrounded by an inner wall of each tube 32. The supporting structure is formed by at least part of the independently formed pipe body, the first cavity surrounded by the inner wall of the pipe body is used as the cavity part, the difficulty of forming the supporting structure is reduced, the pipe body is easy to obtain or manufacture, and the manufacturing cost of the supporting assembly is reduced.

In fig. 6C, the plurality of cavities 31 further includes a second cavity 312 surrounded by outer walls of adjacent tubes 32 of the plurality of tubes 32. For a plurality of tube bodies capable of forming gaps between adjacent tube bodies, the second cavity surrounded by the outer wall of the adjacent tube body can also be used as the cavity part, so that more cavity parts can be formed in a more convenient manner.

Referring to fig. 6C, in some embodiments, in a cross-section parallel to one of the opposing surfaces S1, S2, the first cavity 311 has a cross-sectional maximum width W2 greater than the minimum wall thickness t of the tubular body 32. In the plurality of cavity portions formed by the plurality of tube bodies, by making the cross-sectional maximum width W2 of the first cavity larger than the minimum wall thickness t of the tube body, it is possible to reduce the amount of material of the tube body in the support structure, and to reduce the cost and weight of the support structure while satisfying the support effect.

In fig. 6C, the section maximum width W2 satisfies: w2 is more than or equal to 3mm and less than or equal to 15mm, for example, W2 is 4.5mm, 7mm, 9.2mm, 12.4mm, 13.6mm and the like. If the maximum width W2 of the cross section is too small, more cavity parts need to be arranged on a unit area, so that the supporting structure is more complicated, the manufacturing difficulty is improved, the material quantity of the pipe body is easily increased, and the whole body is heavier; if the cross-sectional maximum width W2 is too large, the dispersion effect of the supporting force by the supporting structure may be affected, thereby weakening the supporting function of the supporting structure. Therefore, by making the section maximum width W2 satisfy: w1 is more than or equal to 3mm and less than or equal to 15mm, so that the simplification and weight reduction of the supporting structure and the dispersion effect of the supporting structure can be considered.

In fig. 6C, the minimum wall thickness t satisfies: t is more than or equal to 0.5mm and less than or equal to 4mm, for example, t is 1.2mm, 2mm, 3.5mm and the like. If the minimum wall thickness t is too small, deformation or damage is likely to occur when pressure is applied; if the minimum wall thickness t is too large, more material needs to be used, resulting in increased cost and weight. Therefore, by making the minimum wall thickness t satisfy: t is more than or equal to 0.5mm and less than or equal to 4mm, so that the good pressure bearing effect and the reduction of cost and weight can be considered.

To further enhance the overall support performance of the support assembly, referring to fig. 6C, in some embodiments, at least a portion of the plurality of tubes 32 have a circular cross-sectional shape and an equal cross-sectional dimension in a cross-section parallel to one of the opposing surfaces S1, S2. A round tube with a circular cross-sectional shape is easier to obtain or manufacture, for example by cutting the tube to length to form a plurality of equally sized tube segments. Compared with other shapes, the round tube can obtain stronger supporting performance under the same amount of materials.

In order to enable the support structure to more effectively support the adjacent sheet layers, in some embodiments, the material of at least a portion of the at least two sheet layers comprises a metal, such as an aluminum alloy, and the material of the support structure 30 comprises a metal, such as an aluminum alloy. In this way the support structure 30 can be welded to at least one of the opposite surfaces of the adjacent sheet material layers, whereby a tight and fixed connection between the different sheet material layers and the support structure between the adjacent sheet material layers is achieved by means of welding.

When welding, can scribble the solder fully at the relative surface on adjacent sheet material layer, when welding through the brazing mode, the real material between each cavity portion of bearing structure all can all form welded structure with adjacent sheet material layer to realize once weld forming on a large scale, efficiency is higher, and because bearing structure and adjacent sheet material layer form wider welding, consequently can obtain more excellent support nature.

In other embodiments, the material of at least a portion of the at least two layers of sheet material comprises plastic, and the material of the support structure 30 comprises plastic, so that the support structure 30 can be heat fused to at least one of the opposing surfaces S1, S2 of the adjacent layers of sheet material, thereby achieving a tight and secure connection between the different layers of sheet material and the support structure between the adjacent layers of sheet material by means of heat fusion.

When the hot melt is connected, the adjacent plate layers and the supporting structure can be integrally hot-pressed through a hot melt compression joint process to form a large-range hot melt connection forming, the efficiency is higher, and the supporting structure and the adjacent plate layers are welded in a larger range, so that better supporting performance can be obtained.

Fig. 7A is a schematic view of a section of opposing surfaces of adjacent sheet material layers at a viewing angle parallel to the opposing surfaces in some embodiments of support assemblies according to the present disclosure. Fig. 7B and 7C are schematic views of zoning of opposing surfaces of adjacent sheet layers at a viewing angle perpendicular to the opposing surfaces, respectively, in some embodiments of support assemblies according to the disclosure.

To improve the reliability of the connection of the support assembly to other structures, referring to fig. 7A to 7C, in some embodiments, the opposing surfaces (e.g., surfaces S1 or S2) of the adjacent sheet layers have a first region G1 and a second region G2, and the opposing surfaces S1, S2 of the adjacent sheet layers form the spacing space in the first region G1 and are disposed in close contact with the second region G2. As can be seen from fig. 7A, due to the fitting arrangement of the second regions G2 of the opposite surfaces S1 and S2, the portions of the adjacent sheet material layers corresponding to the second regions G2 are thinner than the portions corresponding to the first regions, so that the portions of the adjacent sheet material layers corresponding to the second regions G2 can be fixedly connected with other structures.

In the embodiment, the first region is arranged on the opposite surface of the adjacent plate layer to accommodate the supporting structure, and the second region attached to the opposite surface is arranged, so that the part of the supporting component corresponding to the second region can be used for connecting other structures, the connecting strength is improved, the first region can be used for bearing pressure, and the use requirements of different parts of the supporting component are met.

Referring to fig. 7B, in some embodiments, the second region G2 is located at an outer edge of the first region G1 and encloses the first region G1. The second area is arranged on the outer edge of the first area and encloses the first area, so that the closed space for accommodating the first area of the supporting structure can be formed by the surface-attached second area, the supporting structure is more stably restrained in the space, and the overall bearing capacity and stability of the supporting assembly are improved.

Referring to fig. 7C, in some embodiments, the first region G1 is provided in a plurality, the first regions G1 are spaced apart from each other, and the second region G2 is disposed at an outer edge of each of the first regions G1. According to the form of other structures connected with the supporting assembly, the first areas can be arranged in a plurality of numbers, the first areas are mutually separated, and the second areas surround the outer edges of the first areas, so that the connection of different parts (such as outer edges or middle cross beams and the like) of other structures can be realized through the second areas, and the pressure-bearing requirements of different areas can be met through the first areas.

Fig. 8 is a schematic structural view of still other embodiments of support assemblies according to the present disclosure. Referring to fig. 3A, 5A and 8, the support assembly may take on different structural forms. Referring to fig. 3A, 5A, and 8, in some embodiments, in the stacking direction z of the at least two sheet material layers, a portion of at least one outer surface of the at least two sheet material layers corresponding to the first region G1 is raised relative to a portion corresponding to the second region G2.

For example, in fig. 3A and 5A, portions of the outer surfaces of the upper and lower sides of at least two sheet layers corresponding to the first region G1 are each raised with respect to a portion corresponding to the second region G2, and in fig. 8, portions of the outer surfaces of the upper sides of the at least two sheet layers corresponding to the first region G1 are raised with respect to a portion corresponding to the second region G2.

The outer surfaces of at least two sheet material layers are raised relative to the part corresponding to the first area, so that the part containing the supporting structure in the supporting assembly mainly bears pressure, the supporting effect is improved, and the raised structure can realize coarse positioning when the supporting assembly is connected with other structures.

Referring to fig. 8, in some embodiments, in the stacking direction z of the at least two sheet material layers, the outer surface of at least one side of the at least two sheet material layers is a plane. The outer surface of at least one side of at least two plate layers is set to be a plane, so that the plate can be placed on a flat surface more stably through the plane on the side, the stress is more uniform, and the stress concentration is avoided.

To improve the wear and scratch resistance of the support assembly, meeting the requirements of resistance to deformation and damage upon impact, and referring to fig. 8, in some embodiments, the support assembly further comprises: a strengthening layer 40. The reinforcing layer 40 covers the outer surface of at least one side of the at least two sheet layers in the stacking direction z. The strengthening layer 40 can be a film layer, such as a polyvinyl chloride (PVC) film layer, attached to the outer surface of the sheet material layer. Therefore, the surface strength of the supporting component can be further improved and the wear resistance and the scratch resistance of the supporting component can be improved by covering the outer surfaces of at least two plate layers with the reinforcing layer.

Fig. 9 is an exploded schematic view of some embodiments of a battery case according to the present disclosure. Fig. 10 and 11 are schematic views of a connection structure of a case frame and a support assembly according to some embodiments of the battery case of the present disclosure, respectively. Referring to fig. 2, the present disclosure also provides a battery case 10 including the support assembly of any of the foregoing embodiments. The support assembly may be configured to form at least one wall of the battery enclosure 10. The support component is adopted to form at least one wall body of the battery box body, so that the support performance of the battery box body can be improved, and the weight of the battery box body can be reduced. Compared with the assembly of the battery box body in the related technology, the battery box body adopting the support component reduces the component amount and simplifies the assembly process, so that the assembly time of the battery box body can be reduced by 16-20%, the assembly efficiency is improved, and the manufacturing cost is reduced.

In fig. 2, the battery case 10 includes: a case body 11 and a case cover 12. The box body 11 has a receiving groove. The cover 12 is disposed at an open end of the receiving groove and configured to cover the receiving groove. The support assembly may be configured to form a bottom wall 111 of the case body 11. The bottom wall of the box body is provided with the supporting component, so that the structure of the battery box body can be simplified, and the supporting performance of the bottom wall is improved, so that the battery box body and the battery monomer inside the battery box body can be better protected when the battery box body is extruded or collided from one side of the bottom wall.

In other embodiments, the support assembly may be configured to form the side wall 112 of the case body 11, which may simplify the structure of the battery case and improve the support performance of the side wall, so as to better protect the battery case itself and the battery cells therein when the battery case is laterally pressed or collided.

The support assembly may also be configured to form the cover 12, which may simplify the structure of the battery case and improve the support of the cover to better protect the battery case itself and the battery cells therein when the battery case is crushed or bumped from one side of the cover.

Referring to fig. 9-11, in some embodiments, the case body 11 includes a case frame 113. At least two sheet material layers of the support assembly forming the bottom wall 111 of the box body 11 are stacked to form a stacked structure. The laminated structure may include: a first lamination area L1 and a second lamination area L2. The support structure 30 is disposed between at least a portion of the adjacent sheets in the first stacking region L1. All the adjacent layers of plates in the second stacking area L2 are sequentially attached along the stacking direction z. The second stacking area L2 is fixedly connected to the box frame 113. Set up bearing structure or laminate in proper order and set up the different range upon range of district that divides laminated structure according to setting up between the adjacent layer panel to make all adjacent layer panels laminate second range upon range of district and box frame fixed connection that sets up along range upon range of setting up the direction in proper order, can make the supporting component who is the diapire can be more reliable with the fixed connection between the box frame.

For the fixed connection between the second stacking area L2 and the box frame 113, various fixed connection methods can be adopted. For example, at least a portion of the second lamination area L2 may be welded to the case frame 113. The fixed connection between at least part of the second laminating area and the box body frame is realized through a welding mode, and the assembly efficiency can be improved.

For example, at least a portion of the second stacking zone L2 and the lower surface of the tank frame 113 may be fixedly connected by Friction Stir Welding (FSW). FSW can form the second and range upon range of the welding seam of compactness between district and the box frame lower surface for connect more reliably, welding process accessible unilateral operation realizes moreover, need not to use auxiliary material such as welding wire, consequently convenient and fast more.

For another example, at least a part of the second stacking region L2 may be fixedly connected to the case frame 113 by screws. At least part of the second laminating area can be fixedly connected with the box body frame through screws, the connecting mode does not need to have special requirements on materials or connecting positions like a welding mode, and threaded holes or nuts do not need to be arranged in advance like a bolt connecting mode, so that the use is more convenient and faster.

For example, at least a portion of the second stacking region 12 is fixedly connected to the lower surface of the box frame 113 by a Flow Drill Screw (FDS). The fixed connection mode that adopts FDS can realize the fixed connection between different materials, need not trompil in advance to can accomplish the connection through unilateral operation, consequently connect more conveniently, also be fit for the fixed connection of different positions.

Fig. 12A is an exploded schematic view of other embodiments of a battery case according to the present disclosure.

Fig. 12B is a structural schematic view of the mounting structure of the battery case shown in fig. 12A at a bottom view angle.

Fig. 12C is a schematic view of the AA cross section in fig. 12B. Fig. 12D is a schematic structural view of the BB section in fig. 12B.

Referring to fig. 12A and 12B, in some embodiments, the second laminate region L2 may include a plurality of outer edge regions L21 located at outer edges of the support member and a connecting region L22 connected between the plurality of outer edge regions L21 and separating the first laminate region L1. The outer edge region L21 can be used for a fixed connection to an edge region of the tank frame 113, and the connecting region L22 can be used for a fixed connection to a cross beam or a longitudinal beam in the tank frame 113.

Referring to fig. 12B and 12C, the plurality of outer edge regions L21 are welded and/or fixedly connected to the case frame 113 by screws. It can be seen that in fig. 12B, a region C1 indicated by left oblique lines is a welding region, the welding method used may be FSW, and a region C2 indicated by right oblique lines is a region fixedly connected by the flow drill screw 13. The outer edge area L21 can be fixedly connected only by adopting a welding mode or only by adopting a screw, and one part of the outer edge area L21 can also be fixedly connected by adopting a welding mode, and the other part of the outer edge area L21 can be fixedly connected by adopting a screw.

Referring to fig. 12B and 12D, the connection region L22 is fixedly connected to the case frame 113 by screws. The connecting area is fixedly connected with the box body framework by screws, so that the connecting area between the outer edge areas and the cross beam or the longitudinal beam in the box body framework can be more conveniently fixedly connected.

Based on the battery case 10 of the foregoing embodiment, referring to fig. 2, the present disclosure provides a battery 50 including: a battery cell 51 and the aforementioned battery case 10. The battery case 10 is configured to accommodate the battery cells 51. The battery adopting the battery box body can realize better use safety.

Based on the battery of the foregoing embodiment, referring to fig. 1, the present disclosure provides an electric device including: the aforementioned battery 50 for supplying electric power. The electric equipment adopting the battery can realize better use safety. Referring to fig. 2, in some embodiments, the powered device further comprises: a battery housing compartment 61 and an operation compartment 62. The battery housing 61 is configured to house the battery 51. The operation compartment 62 is separated from the battery housing compartment 61 by the support assembly. For the electric equipment with the operation cabin, the supporting component can be used as a box cover or a bottom wall of the battery box body to separate the battery accommodating cabin from the operation cabin, so that the battery space occupation is reduced, and the use safety of the electric equipment is improved.

While the disclosure has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the disclosure. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present disclosure is not intended to be limited to the particular embodiments disclosed herein, but includes all embodiments falling within the scope of the appended claims.

Claims

1. A support assembly, comprising:

at least two layers (20a, 20b, 20c) of plate materials, wherein the at least two layers (20a, 20b, 20c) of plate materials are arranged in a stacked mode, and a spacing space (g 1, g 2) is arranged between adjacent layers (20a, 20b, 20c) of the at least two layers of plate materials; and

a support structure (30) disposed in the spacing spaces (g 1, g 2), the support structure (30) comprising a plurality of cavity portions (31), at least a portion of the plurality of cavity portions (31) extending in a first direction (r 1), the first direction (r 1) intersecting both of the opposing surfaces (S1, S2) of the adjacent layers of sheet material.

2. The support assembly according to claim 1, wherein the first direction (r 1) perpendicularly intersects both of the opposing surfaces (S1, S2) of the adjacent layers of sheet material.

3. The support assembly according to claim 1, wherein the first direction (r 1) intersects both of the opposing surfaces (S1, S2) of the adjacent layers of sheet material at an acute angle.

4. The support assembly according to claim 1, wherein the first direction (r 1) intersects one of the opposing surfaces (S1, S2) of the adjacent sheet material layer at an acute angle and perpendicularly intersects the other of the opposing surfaces (S1, S2) of the adjacent sheet material layer.

5. The support assembly according to claim 1, wherein the first direction (r 1) intersects the opposite surfaces (S1, S2) at an angle Q which satisfies: q is more than or equal to 75 degrees and less than or equal to 90 degrees.

6. The support assembly according to claim 1, wherein the plurality of cavities (31) are spaced along one or more second directions (r 2, r 3) parallel to one of the opposite surfaces (S1, S2).

7. Support assembly according to claim 1, wherein said support structure (30) is integrally formed.

8. The support assembly according to claim 7, wherein, in a section parallel to one of the opposite surfaces (S1, S2), a minimum distance d between two adjacent cavities (31) of the plurality of cavities (31) is smaller than a maximum width W1 of the section of either of the two adjacent cavities (31).

9. The support assembly of claim 8, wherein the minimum spacing d satisfies: d is more than or equal to 0.5mm and less than or equal to 4mm; and/or, the section maximum width W1 satisfies: w1 is more than or equal to 2.3mm and less than or equal to 17.3mm.

10. The support assembly according to claim 7, wherein, in a section parallel to one of said opposite surfaces (S1, S2), at least a portion of said plurality of cavities (31) are each regular hexagonal in cross-sectional shape and equal in cross-sectional size.

11. The support assembly according to claim 1, wherein the support structure (30) comprises a plurality of tubes (32), at least part of the plurality of tubes (32) being formed independently, the plurality of cavities (31) comprising a first cavity (311) enclosed by an inner wall of each tube (32).

12. The support assembly of claim 11, wherein the plurality of cavities (31) further comprises a second cavity (312) enclosed by an outer wall of an adjacent tube (32) of the plurality of tubes (32).

13. A support assembly according to claim 11 or 12, wherein, in a section parallel to one of said opposite surfaces (S1, S2), the first cavity (311) has a section maximum width W2 greater than the minimum wall thickness t of the tubular body (32).

14. The support assembly of claim 13, wherein the cross-sectional maximum width W2 satisfies: w2 is more than or equal to 3mm and less than or equal to 15mm; and/or the minimum wall thickness t satisfies: t is more than or equal to 0.5mm and less than or equal to 4mm.

15. The support assembly according to claim 11, wherein, in a section parallel to one of said opposite surfaces (S1, S2), at least one portion of said plurality of tubular bodies (32) is circular in cross-sectional shape and equal in cross-sectional size.

16. The support assembly according to claim 1, wherein the opposite surfaces (S1, S2) of the adjacent sheet layers have a first region (G1) and a second region (G2), the opposite surfaces (S1, S2) of the adjacent sheet layers forming the separation space (G1, G2) in the first region (G1) and being arranged flush in the second region (G2).

17. The support assembly according to claim 16, characterized in that said second zone (G2) is located at the outer edge of said first zone (G1) and encloses said first zone (G1).

18. The supporting assembly according to claim 16, characterized in that said first zone (G1) is provided in plurality, a plurality of said first zones (G1) being mutually spaced, each first zone (G1) being provided at its outer edge with said second zone (G2).

19. The support assembly according to claim 16, wherein, in a stacking arrangement direction (z) of the at least two plate layers (20a, 20b, 20c), a portion of at least one outer surface of the at least two plate layers (20a, 20b, 20c) corresponding to the first region (G1) is convex with respect to a portion corresponding to the second region (G2).

20. A support assembly according to claim 1, wherein, in the stacking arrangement direction (z) of the at least two layers of plate material (20a, 20b, 20c), the outer surface of at least one side of the at least two layers of plate material (20a, 20b, 20c) is planar.

21. The support assembly according to claim 1, wherein the material of at least a portion of the at least two layers (20a, 20b, 20c) of sheet material comprises metal, and the material of the support structure (30) comprises metal, such that the support structure (30) is capable of being welded to at least one of the opposing surfaces (S1, S2) of the adjacent layer of sheet material.

22. A support assembly according to claim 1, wherein the material of at least a portion of the at least two layers (20a, 20b, 20c) of sheet material comprises plastic, and the material of the support structure (30) comprises plastic, such that the support structure (30) is capable of being heat-fused to at least one of the opposing surfaces (S1, S2) of the adjacent layer of sheet material.

23. The support assembly of claim 1, further comprising:

a reinforcing layer (40) covering the outer surface of at least one side of the at least two sheet material layers (20a, 20b, 20c) in the stacking direction (z) of the at least two sheet material layers (20a, 20b, 20c).

24. A battery case (10), comprising: the support assembly of any one of claims 1 to 23,

wherein the support assembly is configured to form at least one wall of the battery enclosure (10).

25. The battery case (10) of claim 24, wherein the battery case (10) comprises:

a box body (11) having an accommodating groove; and

a cover (12) disposed at an open end of the receiving groove and configured to cover the receiving groove,

wherein the support assembly is configured to form a bottom wall (111) of the case body (11).

26. The battery case (10) according to claim 25, wherein the case body (11) includes a case frame (113), and at least two sheet material layers (20a, 20b, 20c) in the support member are stacked to form a stacked structure including:

a first lamination zone (L1) in which the support structure (30) is arranged between at least some of the sheets of adjacent layers; and

the second laminating area (L2), all the adjacent layers of plates in the second laminating area (L2) are sequentially attached along the laminating direction (z);

wherein the second stacking area (L2) is fixedly connected with the box frame (113).

27. Battery case (10) according to claim 26, characterized in that at least part of the second lamination zone (L2) is welded to the case frame (113).

28. The battery case (10) of claim 27, wherein at least a portion of the second lamination region (L2) is fixedly connected to a lower surface of the case frame (113) by friction stir welding.

29. The battery case (10) according to claim 26, wherein at least a portion of the second lamination region (L2) is fixedly connected to the case frame (113) by screws.

30. The battery case (10) according to claim 29, wherein at least a portion of the second lamination region (L2) is fixedly connected to a lower surface of the case frame (113) by a flow drill screw (13).

31. The battery box (10) according to claim 26, wherein the second lamination zone (L2) comprises a plurality of outer edge zones (L21) located at the outer edges of the support assembly and a connection zone (L22) connected between the plurality of outer edge zones (L21) and separating the first lamination zone (L1), the plurality of outer edge zones (L21) are welded and/or fixedly connected with the box frame (113) by screws, and the connection zone (L22) is fixedly connected with the box frame (113) by screws.

32. The battery case (10) of claim 24, wherein the battery case (10) comprises:

a box body (11) having an accommodating groove; and

wherein the support assembly is configured to form a side wall (112) of the box body (11).

33. The battery case (10) of claim 24, wherein the battery case (10) comprises:

a box body (11) having an accommodating groove; and

wherein the support assembly is configured to form the case lid (12).

34. A battery (50), comprising:

a battery cell (51); and

the battery case (10) of any of claims 24 to 33, configured to house said battery cells (51).

35. An electrical device, comprising:

the battery (50) of claim 34, for providing electrical energy.

36. The powered device of claim 35, further comprising:

a battery housing compartment (61) configured to house the battery; and

an operation chamber (62) separated from the battery accommodation chamber (61) by the support member.