Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a box body and a reinforcing beam, the box body is provided with a bottom wall and a surrounding wall, the surrounding wall is formed on one side of the bottom wall, the surrounding wall and the bottom wall jointly define a mounting cavity, a battery monomer is arranged in the mounting cavity, and the box body comprises a box body formed by a metal plate; the reinforcing beam is arranged on the outer side of the enclosure bulkhead and provided with a hanging part, and the hanging part is used for being hung to electric equipment. According to the technical scheme, the reinforcing beam is arranged on the outer side of the box body, on one hand, the reinforcing beam is provided with the hanging part and can be hung to the electric equipment through the hanging part, on the other hand, before the enclosure wall of the box body bears collision or extrusion, the reinforcing beam can counteract a considerable part of acting force, and the box body can be hung to the electric equipment through the hanging part. And the problems of poor side rigidity and strength of the existing metal plate battery box body are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery device and an electric equipment. BACKGROUND

[0002] In the field of new energy, sheet metal battery boxes, as a low-cost box solution, are widely used in power battery packs. However, the side stiffness and strength of the current sheet metal battery box are poor, which cannot meet the increasingly stringent side impact and extrusion performance requirements of the whole vehicle. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a battery device and an electric equipment, which aims to improve the problem of poor side stiffness and strength of the current sheet metal battery box.

[0004] In a first aspect, the battery device provided by the present application comprises:

[0005] a box body having a bottom wall and a surrounding wall, the surrounding wall being formed on one side of the bottom wall, the surrounding wall and the bottom wall together defining a mounting cavity, the mounting cavity being provided with a battery monomer, the box body comprising a sheet metal formed box body; and

[0006] a reinforcing beam provided on the outer side of the surrounding wall, the reinforcing beam being provided with a mounting portion, the mounting portion being used to mount to the electric equipment.

[0007] The technical scheme provided by the present application sets the reinforcing beam on the outer side of the surrounding wall of the box body. On the one hand, since the reinforcing beam is located on the side of the surrounding wall, when the battery device bears a lateral impact or extrusion, the reinforcing beam can offset a considerable part of the impact or extrusion force, thereby improving the problem of poor side stiffness and strength of the current sheet metal battery shell. On the other hand, the reinforcing beam is provided with a mounting portion, which increases the functionality of the reinforcing beam. After the battery device is mounted to the vehicle through the reinforcing beam, the reinforcing beam is directed towards the side of the vehicle, which can meet the stringent side impact and extrusion performance requirements of the whole vehicle.

[0008] In some embodiments, the reinforcing beam comprises a profiled beam.

[0009] The reinforcing beam is designed as a profiled beam in terms of mechanical properties, and the geometric section thereof is designed to have a plurality of cavity structures, which is beneficial to improve the stiffness of the profiled beam and can also meet the lightweight design requirement, thereby being beneficial to control the overall weight of the battery device.

[0010] In some embodiments, the bottom wall and / or the surrounding wall are provided as a single-layer wall body.

[0011] The bottom wall and the surrounding wall of the sheet metal formed box body are provided as single-layer walls, which can have more excellent lightweight performance on the basis of loading battery monomers, and have high production efficiency and low production cost, and the single-layer walls are easier to meet the manufacturing requirements of complex shapes of the box body.

[0012] In some embodiments, the bottom of the reinforcing beam is arranged close to the bottom wall;

[0013] The battery device further comprises a first reinforcing member, which is arranged at the bottom of the reinforcing beam and connected to the box body.

[0014] Since the reinforcing beam is located outside the surrounding wall and the overall weight of the battery device needs to be transmitted to the vehicle, the connecting point between the reinforcing beam and the box body may bear a large connecting force. By arranging the first reinforcing member, a connecting point can be added between the bottom of the reinforcing beam and the box body, which can share the connecting force and ensure the stable connection between the reinforcing beam and the box body.

[0015] In some embodiments, one end of the first reinforcing member is connected to the bottom of the reinforcing beam, and the other end is provided with a first lap joint portion extending to the bottom wall.

[0016] Since the first lap joint portion of the first reinforcing member extends to the bottom wall of the box body, when the first reinforcing member bears tensile stress, the first lap joint portion and the bottom wall are pressed against each other. Compared with the scheme in which the first lap joint portion is arranged on the surrounding wall of the box body, the connection between the first lap joint portion and the bottom wall in the scheme provided in the embodiment is more stable and has higher reliability.

[0017] In some embodiments, the surrounding wall comprises two first side walls opposite in a first direction, and the two first side walls extend in a second direction.

[0018] The reinforcing beams and the first reinforcing members are correspondingly grouped, and two groups are arranged corresponding to the two first side walls, and the first lap joint portions of the two first reinforcing members are connected to each other to support the bottom wall.

[0019] The first direction and the second direction are arranged intersectingly.

[0020] The two groups of reinforcing beams and first reinforcing members corresponding to the two first side walls of the surrounding wall make the two reinforcing beams provide protection for the box body of the battery device from two opposite sides of the vehicle after the battery device is installed on the vehicle. Meanwhile, the first lap joint portions of the two first reinforcing members are connected to each other, which is equivalent to supporting the box body in the form of a tray, and a relatively stable supporting effect can be obtained, which greatly reduces the connecting pressure of the connecting point between the reinforcing beam and the box body, and provides a reinforcing effect for the reinforcing beam.

[0021] In some embodiments, the first lap joint is welded to the bottom wall.

[0022] The first lap joint is welded to the bottom wall of the box, which can provide high connection strength and ensure the connection stability of the first reinforcing member and the bottom wall, and the welding connection does not need to form a hole in the bottom wall, which has little influence on the sealing of the installation cavity in the box.

[0023] In some embodiments, the first reinforcing member is provided with a second lap joint at one end connected to the bottom of the reinforcing beam, and the second lap joint is arranged to extend away from the surrounding wall.

[0024] The second lap joint is arranged to extend away from the surrounding wall, which increases the connection area of the first reinforcing member and the reinforcing beam, thereby providing a more stable connection effect.

[0025] In some embodiments, the second lap joint is connected to the reinforcing beam by a screw or a rivet.

[0026] The second lap joint is connected to the reinforcing beam by a screw, which is easy to disassemble, so that the reinforcing beam can be easily replaced after being damaged in a collision; and the rivet connection is relatively simple in process and has high connection reliability.

[0027] In some embodiments, the top of the reinforcing beam is arranged away from the bottom wall.

[0028] The battery device further comprises a second reinforcing member, one end of the second reinforcing member is arranged at the top of the reinforcing beam, and the other end is connected to the surrounding wall.

[0029] The second reinforcing member is arranged between the top of the reinforcing beam and the box, which can provide a bracing effect, thereby sharing the connection force between the reinforcing beam and the box to ensure the stable connection between the reinforcing beam and the box.

[0030] In some embodiments, the reinforcing beam is arranged at the side of the surrounding wall along a first direction, and the reinforcing beam and the surrounding wall are in abutment and fixed connection in the first direction.

[0031] The reinforcing beam and the surrounding wall are in abutment and fixed connection in the first direction, and the force is directly transmitted between them, which is equivalent to connecting the reinforcing beam and the surrounding wall as a whole, thereby increasing the rigidity and strength of the reinforcing beam and the surrounding wall.

[0032] In some embodiments, the reinforcing beam and the surrounding wall are connected by structural glue and / or sealing rivets.

[0033] The way of connecting the reinforcing beam and the surrounding wall through the structural adhesive is relatively simple and efficient, meanwhile, the sealing performance of the mounting cavity in the box is not affected, and the structural adhesive has good anti-seismic performance, which is suitable for the scene that the battery device is mounted on the vehicle and needs to resist vibration and impact; and the sealing rivet has high connection reliability, and can also reduce the influence of the hole in the surrounding wall on the sealing performance of the box through its own sealing function.

[0034] In some embodiments, a connecting flange is formed on the side of the surrounding wall away from the bottom wall;

[0035] The top of the reinforcing beam is arranged away from the bottom wall, and the top of the reinforcing beam is connected to the connecting flange.

[0036] The side of the surrounding wall away from the bottom wall is arranged outwardly, which can form a connecting flange, and the connecting flange can provide a connecting basis between the top of the reinforcing beam and the surrounding wall, thereby ensuring the connection firmness between the reinforcing beam and the surrounding wall.

[0037] In some embodiments, the reinforcing beam is connected to the connecting flange through a riveting part.

[0038] The reinforcing beam and the connecting flange are connected through the riveting part, which is relatively simple in process, and the riveting reliability is also high.

[0039] In some embodiments, the riveting part is a pull rivet nut.

[0040] The box further comprises a box cover arranged on the surrounding wall, the box cover is formed with a matching flange corresponding to the connecting flange, and the matching flange is connected to the pull rivet nut through a bolt.

[0041] The riveting part is arranged as a pull rivet nut, which can connect the reinforcing beam and the connecting flange of the surrounding wall through its own riveting function, and can also provide a connection point for the box cover through its screwing function, thereby connecting the reinforcing beam, the surrounding wall and the box cover together through one connection point, and simplifying the layout of the connection point.

[0042] In a second aspect, the application further provides a power consumption device, which comprises the above battery device. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings from the structures shown in the drawings without creative labor.

[0044] Figure 1 Structure diagram of an embodiment of a vehicle provided with the power consumption device of the present application;

[0045] Figure 2 Exploded structure diagram of an embodiment of the battery device provided with the present application;

[0046] Figure 3 Three-dimensional structure diagram of the case in the battery device provided with the present application;

[0047] Figure 4 Structure diagram of a first embodiment of the case; Figure 3

[0048] Figure 5 Cross-sectional structure diagram of the first embodiment of the case; Figure 3

[0049] Figure 6 Structure diagram of a second embodiment of the case; Figure 3

[0050] Figure 7 Cross-sectional structure diagram of the second embodiment of the case; Figure 3

[0051] Figure 8 Structure diagram of a third embodiment of the case; Figure 3

[0052] Figure 9 Cross-sectional structure diagram of the third embodiment of the case; Figure 3

[0053] Figure 10 Structure diagram of a fourth embodiment of the case; Figure 3

[0054] Figure 11 Cross-sectional structure diagram of the fourth embodiment of the case; Figure 3

[0055] Figure 12 Structure diagram of a first embodiment of the case; Figure 3

[0056] Figure 13 Structure diagram of another embodiment of the case; Figure 3

[0057] Figure 14 Structure diagram of still another embodiment of the case; Figure 3

[0058] Figure 15 Structure diagram of still another embodiment of the case;​​​​​​​​​​​Figure 3 Partial cross-sectional structure schematic view of still another embodiment of the middle box body.

[0059] BRIEF DESCRIPTION OF DRAWINGS

[0060] 1000, vehicle;

[0061] 100, battery device; 200, controller; 300, motor;

[0062] 1, box body; 1a, mounting cavity; 11, bottom wall; 12, surrounding wall; 121, first side wall; 122, connecting flange; 13, box cover; 131, matching flange; 2, reinforcing beam; 2a, profiled beam; 21, mounting portion; 3, tray; 3a, first reinforcing member; 31, first lapping portion; 32, second lapping portion; 4, second reinforcing member; 5, structural adhesive; 6, sealing rivet; 7, riveting portion; 7a, pull rivet nut; 81, screw; 82, rivet; 9, battery cell; X, first direction; Y, second direction; Z, third direction.

[0063] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0064] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0066] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0067] Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0068] In the description of the embodiments of the application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0069] In the description of the embodiments of the application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application.

[0070] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing", and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0071] The battery device disclosed in the embodiments of the application can be used to provide electric energy for electric equipment, wherein the electric equipment can be, but is not limited to, a battery car, an electric vehicle, a ship, a spacecraft, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0072] The following embodiments are described for the convenience of illustration, taking a vehicle 1000 as an example of a kind of electric equipment of an embodiment of the application.

[0073] Please refer to Figure 1 , Figure 1A structural diagram of an embodiment of an electric device provided in the present application is shown. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, which can be a pure electric vehicle, a hybrid electric vehicle, or a range extended electric vehicle. The vehicle 1000 is internally 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 supply power to the vehicle 1000, for example, the battery device 100 can be used as the operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0074] In some embodiments of the present application, the battery device 100 can not only be used as the operating power supply of the vehicle 1000, but also be used as the driving power supply of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0075] In the field of new energy, sheet metal battery boxes are widely used in power battery packs as a low-cost box solution. Compared with roll-pressed battery boxes and cast battery boxes, sheet metal battery boxes have the advantages of higher production efficiency, lower production cost, and better ability to meet the lightweight design requirements of power battery packs. However, to meet the lightweight design requirements, the thickness of the processing plate used for sheet metal batteries is usually not too thick, so the side wall of the sheet metal battery box is usually thin, which leads to poor side stiffness and strength of the sheet metal battery box, and cannot meet the increasingly stringent side impact and extrusion resistance performance requirements of the whole vehicle. When subjected to external impact, the sheet metal battery box is prone to deformation, and the battery cells loaded therein are prone to damage due to extrusion, thereby causing serious accidents.

[0076] By analyzing the causes of the above problems, it can be found that the main reason for the extrusion of the battery cells in the sheet metal battery box after being subjected to external impact is that the side stiffness and strength of the sheet metal battery box are not enough, and the box is prone to deformation. The side strength of the box can be increased to improve its protection performance. However, the performance advantage of lightweight and the weak impact resistance of the sheet metal battery box often exist at the same time. If the wall thickness is increased to improve its impact resistance, the lightweight advantage of the box may be lost and the processing difficulty may be increased. Therefore, improvements need to be made from other aspects to improve the above problems.

[0077] In the prior art, solutions for improving the impact resistance of sheet metal battery boxes typically include stamping concave and convex structures on the sides of the box. It is understood that stamping concave and convex structures on a large sheet metal structure is beneficial to improving the strength of the sheet metal structure. However, the improvement in strength by concave and convex structures is ultimately limited. When it is difficult to directly improve the strength of the side wall of the box, an external reinforcement structure can be considered. By placing the reinforcement structure on the side of the box side wall, the side wall of the box can be protected. At the same time, the reinforcement structure can also be mounted to the vehicle to increase the functionality of the reinforcement structure.

[0078] In view of this, this application provides a battery device that, when applied to electrical equipment, can at least improve the current problem of poor lateral stiffness and strength of sheet metal battery boxes.

[0079] To facilitate understanding of the battery device provided in this application, the following description is provided in conjunction with the accompanying drawings, wherein... Figure 2 An exploded structural diagram of an embodiment of the battery device provided in this application; Figure 3 A three-dimensional structural diagram of the housing in the battery device provided in this application; Figure 4 for Figure 3 An exploded structural diagram of the first embodiment of the middle box; Figure 5 for Figure 3 A cross-sectional structural schematic diagram of the first embodiment of the middle box; Figure 6 for Figure 3 An exploded view of the second embodiment of the middle box; Figure 7 for Figure 3 Cross-sectional structural schematic diagram of the second embodiment of the middle box; Figure 8 for Figure 3 An exploded view of the third embodiment of the middle box; Figure 9 for Figure 3 A cross-sectional structural diagram of the third embodiment of the middle box; Figure 10 for Figure 3 An exploded view of the fourth embodiment of the middle box; Figure 11 for Figure 3 A cross-sectional structural diagram of the fourth embodiment of the middle box; Figure 12 for Figure 3 A partial cross-sectional structural schematic diagram of one embodiment of the middle box; Figure 13 for Figure 3 A partial cross-sectional structural diagram of another embodiment of the middle box; Figure 14 for Figure 3 A partial cross-sectional structural schematic diagram of another embodiment of the middle box; Figure 15 for Figure 3 A partial cross-sectional structural diagram of another embodiment of the middle box.

[0080] Please see Figure 2 andFigure 3 In an embodiment of the present application, the battery device 100 comprises a box body 1 and a reinforcing beam 2, the box body 1 has a bottom wall 11 and a surrounding wall 12, the surrounding wall 12 is formed on one side of the bottom wall 11, and the bottom wall 11 and the surrounding wall 12 jointly define a mounting cavity 1a, the mounting cavity 1a is provided with a battery monomer 9, the box body 1 comprises a sheet metal formed box body 1; the reinforcing beam 2 is arranged outside the surrounding wall 12, and the reinforcing beam 2 is provided with a mounting part 21, which is used to mount to an electric device.

[0081] It should be noted that the battery device 100 needs to load the battery monomer 9 through the box body 1, as shown in Figure 2 , and is installed on the vehicle 1000 through the box body 1, and the basic structure of the box body 1 generally comprises a box body and a box cover 13, the box cover 13 is arranged on the box body and jointly defines the mounting cavity 1a with the box body, and the mounting cavity 1a can be mainly formed in the box body, at this time, the box body can be understood as a basin structure, and the box cover 13 is arranged on the box body to cover the mounting cavity 1a; the mounting cavity 1a can also be mainly formed in the box cover 13, at this time, the box cover 13 can be understood as a cover structure, and the box cover 13 is arranged on the box body to cover the battery monomer 9 carried on the box body into the box cover 13, of course, the structure of the box body 1 is not limited to this, and the present embodiment does not limit it, and in the present embodiment, the box body 1 has a bottom wall 11 and a surrounding wall 12, wherein the bottom wall 11 and the surrounding wall 12 can be on the same structure, that is, on the box body at the same time, at this time, the box body belongs to the above-mentioned basin structure (as shown in Figure 2 and 3 ), and the bottom wall 11 and the surrounding wall 12 can be on different structures, that is, the bottom wall 11 is on the box body, and the surrounding wall 12 is on the box cover 13, at this time, the box cover 13 belongs to the above-mentioned cover structure. Sheet metal is a cold working process for metal sheet, which involves shearing, stamping, cutting, compounding, folding, riveting, splicing and other technologies, and is widely used in automobile manufacturing, aerospace and other industries, and various parts and structural parts are processed from metal sheets, and the thickness of the metal sheet is usually below 6mm, but the thickness of the box body 1 is not limited in the present embodiment; the sheet metal process focuses on the strength and toughness of the material, and realizes the manufacturing of complex shapes through various processing methods, and has the characteristics of high efficiency, low cost and flexible shape.

[0082] The number of battery cells 9 loaded in the installation cavity 1a can be one, but is usually multiple. The multiple battery cells 9 can be connected in series, in parallel, or in a mixed connection. The mixed connection means that the multiple battery cells 9 are connected in series and in parallel. The multiple battery cells 9 can be directly connected in series, in parallel, or in a mixed connection to form a battery as a whole. Of course, the multiple battery cells 9 can also be in the form of a battery module (for example, multiple battery cells 9 stacked in a column). The multiple battery modules are connected in series, in parallel, or in a mixed connection to form a battery as a whole (for example, multiple battery cells 9 arranged in multiple rows). The battery device 100 can further include other structures. For example, the battery device 100 can further include a busbar component for realizing electrical connection between the multiple battery cells 9 or the multiple battery modules. Each battery cell 9 can be a secondary battery or a primary battery, and can be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 9 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes.

[0083] Since the surrounding wall 12 and the bottom wall 11 jointly define the installation cavity 1a, the inner side of the surrounding wall 12 is understood to be the side facing the installation cavity 1a. Therefore, the outer side of the surrounding wall 12, that is, the side of the surrounding wall 12 facing away from the installation cavity 1a, is also the peripheral side of the battery device 100. The reinforcing beam 2 is arranged on the outer side of the surrounding wall 12, so that when the battery device 100 is subjected to a side collision or extrusion, the reinforcing beam 2 can first absorb a considerable part of the force. The reinforcing beam 2 can be arranged on only a part of the wall of the surrounding wall 12 along the peripheral direction of the surrounding wall 12, or can be arranged on the entire peripheral wall of the surrounding wall 12. It should be understood that whether the reinforcing beam 2 is arranged on only a part of the wall of the surrounding wall 12 or on the entire peripheral wall of the surrounding wall 12, the presence of the reinforcing beam 2 contributes to the improvement of the side stiffness and strength of the box body 1. It is worth mentioning that the reinforcing beam 2 needs to be connected to the box body 1. The specific connection position of the reinforcing beam 2 on the box body 1 can be on the bottom wall 11, on the surrounding wall 12, or on both the bottom wall 11 and the surrounding wall 12. The present embodiment does not limit the connection position.

[0084] The technical scheme provided by the embodiment has the following advantages. The reinforcing beam 2 not only blocks the outside of the surrounding wall 12 to improve the lateral rigidity and strength of the box body 1, but also is mounted on the electrical equipment, for example, the vehicle 1000, by using the mounting part 21. The mounting part 21 generally includes a mounting bushing, which is connected to a nut on the vehicle 1000 by a mounting bolt to realize mounting connection. In the embodiment, the mounting mode of the mounting part 21 on the electrical equipment is not limited. The reinforcing beam 2 itself also needs to be lightweight and strong. When the lateral rigidity and strength of the box body 1 are required to be high, the reinforcing beam 2 can be provided in a solid metal alloy structure to improve the lateral rigidity and strength of the box body 1 to the maximum extent. When the lateral rigidity and strength of the box body 1 are required to be general, the reinforcing beam 2 can also be provided in a hollow metal alloy structure to meet the basic lateral rigidity and strength of the box body 1 and also take into account the lightweight design requirement of the box body 1 to some extent.

[0085] The technical scheme provided by the application has the following advantages. The box body 1 is formed by sheet metal, which can meet the manufacturing requirements of a complex shape of the box body. Compared with a cast box body 1 and a roll-formed box body 1, the sheet metal-formed box body 1 has more excellent lightweight performance, higher production efficiency, and lower production cost.

[0086] The reinforcing beam 2 is arranged outside the surrounding wall 12 of the box body 1. On one hand, the reinforcing beam 2 is arranged on the side of the surrounding wall 12, and when the battery device 100 is subjected to lateral collision or extrusion, the reinforcing beam 2 can offset a considerable part of the collision or extrusion force, thereby improving the poor lateral rigidity and strength of the sheet metal battery shell. On the other hand, the mounting part 21 is arranged on the reinforcing beam 2 to increase the functionality of the reinforcing beam 2. After the battery device 100 is mounted on the vehicle 1000 by the reinforcing beam 2, the reinforcing beam 2 is directed toward the side of the vehicle 1000, which can meet the harsh requirements of the vehicle for side collision and extrusion performance.

[0087] Please refer to Figure 4 , Figure 6 , Figure 8 and Figure 10 In some embodiments, the reinforcing beam 2 includes a profiled beam 2a.

[0088] It should be noted that the "profiled material" refers to a straight bar object with a specific geometric cross section made of metal such as iron, steel, and plastic, aluminum, glass fiber, and other materials with certain strength and toughness by rolling, extrusion, casting, and other processes. They are divided into simple and complex cross sections, including hollow and solid profiles. Therefore, the "profiled beam 2a" refers to a beam body made of profiled material. In the battery device 100, the profiled beam 2a is usually a hollow aluminum alloy, and its density is only one third of that of a steel profile.

[0089] According to the above technical solution, the reinforcing beam 2 is arranged as a profiled beam 2a, and the geometric section thereof is designed from the mechanical property to arrange a plurality of cavity structures, which is beneficial to improve the rigidity of the profiled beam 2a, and meanwhile, the design requirement of light weight can be considered, and the overall weight of the battery device 100 can be controlled.

[0090] In some embodiments, the bottom wall 11 and / or the surrounding wall 12 are arranged as single-layer walls.

[0091] It should be noted that, in combination with the above description of the sheet metal process, the "single-layer wall" refers to a wall formed by a single-layer metal sheet. Compared with a wall formed by a multi-layer metal sheet, the single-layer wall is undoubtedly easier to be processed into a complex box shape. The two parallel technical features "the bottom wall 11 is arranged as a single-layer wall" and "the surrounding wall 12 is arranged as a single-layer wall" can be set separately or simultaneously. When the bottom wall 11 and the surrounding wall 12 are both arranged as single-layer walls, the box 1 can obviously better reflect its light weight advantage.

[0092] According to the above technical solution, the bottom wall 11 and the surrounding wall 12 of the sheet metal formed box 1 are arranged as single-layer walls. On the basis of loading the battery monomer 9, the single-layer walls can have more excellent light weight performance, and the production efficiency is high and the production cost is low. At the same time, the single-layer wall is easier to meet the manufacturing requirements of the complex shape of the box 1.

[0093] Please refer to Figure 5 , Figure 7 , Figure 9 and Figure 11 In some embodiments, the bottom of the reinforcing beam 2 is arranged close to the bottom wall 11; the battery device 100 further comprises a first reinforcing member 3a, which is arranged at the bottom of the reinforcing beam 2 and connected to the box 1.

[0094] It is easy to understand that the bottom wall 11 of the box 1 is at the bottom of the battery device 100 along the height direction (i.e. Figure 2 the third direction Z in the above-mentioned embodiments, which is usually arranged to intersect with the first direction X and the second direction Y two by two).

[0095] The first reinforcing member 3a is usually made of a metal alloy material, such as an aluminum alloy material, and the structure of the first reinforcing member 3a is not limited in the embodiment. The first reinforcing member 3a is arranged at the bottom of the reinforcing beam 2 and connected to the cabinet 1. It should be understood that the connecting point of the first reinforcing member 3a and the bottom of the reinforcing beam 2 is at a distance from the surrounding wall 12 of the cabinet 1, and the connecting point of the first reinforcing member 3a and the cabinet 1 is also at a distance from the reinforcing beam 2, thereby forming a triangular stable structure. The connection mode of the first reinforcing member 3a and the reinforcing beam 2 and the cabinet 1 should be fixed connection, and the specific connection mode can be welding or bolt connection, which is not limited in the embodiment.

[0096] Since the reinforcing beam 2 is located outside the surrounding wall 12, and the overall weight of the battery device 100 needs to be transmitted to the vehicle 1000, the connecting point between the reinforcing beam 2 and the cabinet 1 may bear a large connecting force. According to the above technical solution, the first reinforcing member 3a is arranged to increase the connecting point between the bottom of the reinforcing beam 2 and the cabinet 1, thereby sharing the connecting force and ensuring the stable connection between the reinforcing beam 2 and the cabinet 1.

[0097] Please refer to Figure 5 , Figure 7 , Figure 9 and Figure 11 In some embodiments, one end of the first reinforcing member 3a is connected to the bottom of the reinforcing beam 2, and the other end is provided with a first lap joint 31, and the first lap joint 31 extends to the connecting bottom wall 11.

[0098] It should be noted that the other end of the first reinforcing member 3a is provided with the first lap joint 31, that is, the end of the first reinforcing member 3a connected to the cabinet 1 is provided with the first lap joint 31. In the present solution, the first lap joint 31 extends to the bottom wall 11 of the cabinet 1 and is connected thereto. After the reinforcing beam 2 is mounted and connected to the vehicle 1000, the middle part of the first reinforcing member 3a should bear tensile stress according to its position.

[0099] According to the above technical solution, since the first lap joint 31 of the first reinforcing member 3a extends to the bottom wall 11 of the cabinet 1, when the first reinforcing member 3a bears tensile stress, the first lap joint 31 and the bottom wall 11 are extruded. Compared with the solution in which the first lap joint 31 is arranged on the surrounding wall 12 of the cabinet 1 (in which the connection between the first lap joint 31 and the surrounding wall 12 is easily damaged under the overall pulling of the first reinforcing member 3a), the connection between the first lap joint 31 and the bottom wall 11 in the solution provided by the embodiment is more firm and has higher reliability.

[0100] Please refer to Figure 4 , Figure 6 , Figure 8 and Figure 10In some embodiments, the surrounding wall 12 comprises two first side walls 121 opposite along the first direction X, the two first side walls 121 extending along the second direction Y; the reinforcing beams 2 and the first reinforcing members 3a are grouped in correspondence, two groups are arranged in correspondence of the two first side walls 121, and the first lap portions 31 of the two first reinforcing members 3a are connected to each other to support the bottom wall 11; the first direction X and the second direction Y are arranged intersecting each other.

[0101] It should be noted that the first direction X and the second direction Y mentioned in the present embodiment are generally two directions intersecting in a plane, and the included angle between the first direction X and the second direction Y is generally 90 degrees, i.e., the first direction X and the second direction Y are perpendicular to each other, but are not limited thereto, and the included angle between the first direction X and the second direction Y can also be any other angle value, and after the battery device 100 is correctly installed on the vehicle 1000, the first direction X and the second direction Y are generally coincident with the left-right direction and the front-rear direction of the vehicle 1000, respectively.

[0102] In most battery devices 100, the surrounding wall 12 generally has two side walls opposite along the first direction X and two side walls opposite along the second direction Y, and in the present embodiment, only the two first side walls 121 opposite along the first direction X are limited for the surrounding wall 12, and whether there are side walls in other directions is not limited. It can be understood that since the reinforcing beams 2 are also arranged in correspondence of the first side walls 121, after the battery device 100 is installed on the vehicle 1000, the two reinforcing beams 2 can provide protection for the box body 1 of the battery device 100 from the two opposite sides of the vehicle 1000. The "first lap portions 31 of the two first reinforcing members 3a are connected to each other to support the bottom wall 11" can be understood as the bottom wall 11 of the box body 1 is also provided with a tray 3, as shown in Figure 6 and Figure 10 The first reinforcing members 3a at the two ends of the tray 3 along the first direction X are respectively bent towards the two reinforcing beams 2, of course, the first lap portions 31 between the two first reinforcing members 3a can also be connected by metal stays, and it can be understood that since there is a connection between the two first lap portions 31, the two first reinforcing members 3a are equivalent to holding the bottom wall 11 of the box body 1, which also belongs to a kind of limiting and fixed connection mode, on this basis, the first lap portion 31 and the bottom wall 11 of the box body 1 can not be further connected, of course, it can also be further connected and fixed by welding or bolt connection, which is not limited in the present embodiment.

[0103] According to the technical scheme, two groups of the reinforcing beams 2 and the first reinforcing members 3a are arranged on the two first side walls 121 of the surrounding wall 12, so that when the battery device 100 is installed on the vehicle 1000, the two reinforcing beams 2 can provide protection for the box 1 of the battery device 100 from two opposite sides of the vehicle 1000; meanwhile, the first lap joints 31 of the two first reinforcing members 3a are connected to each other, which is equivalent to supporting the box 1 in the form of a tray 3, so that a relatively stable supporting effect can be obtained, and the connection pressure of the connection point between the reinforcing beam 2 and the box 1 is reduced to a great extent, so that the reinforcing beam 2 is provided with a reinforcing effect.

[0104] In some embodiments, the first lap joint 31 is welded to the bottom wall 11.

[0105] According to the technical scheme, the first lap joint 31 and the bottom wall 11 of the box 1 are connected by welding, which can obtain a high connection strength on the one hand, and ensure the connection firmness of the first reinforcing member 3a and the bottom wall 11 on the other hand, and the welding connection mode does not need to open a hole in the bottom wall 11, which has a small influence on the sealing of the installation cavity 1a in the box 1.

[0106] Please refer to Figure 5 、 Figure 7 、 Figure 9 and Figure 11 In some embodiments, the first reinforcing member 3a is connected to the bottom of the reinforcing beam 2 at one end of the first reinforcing member 3a, and the second lap joint 32 is formed at the one end, and the second lap joint 32 is arranged to extend away from the surrounding wall 12.

[0107] It should be noted that the second lap joint 32 formed at the end of the first reinforcing member 3a is connected to the bottom of the reinforcing beam 2, and the second lap joint 32 extends in a direction away from the surrounding wall 12, which is equivalent to increasing the connection area of the first reinforcing member 3a and the reinforcing beam 2.

[0108] According to the technical scheme, the second lap joint 32 is arranged to extend away from the surrounding wall 12, so that the connection area of the first reinforcing member 3a and the reinforcing beam 2 is increased, thereby providing a more firm connection effect.

[0109] Please refer to Figure 12 and Figure 15 In some embodiments, the second lap joint 32 and the reinforcing beam 2 are connected by a screw 81 or a rivet 82.

[0110] It should be noted that the fixed connection between the two split structures usually includes screw 81 connection, rivet connection and welding connection, wherein the welding connection is easy to form a heat-affected zone near the welding, so that the welding base material becomes brittle, and the welding produces residual stress problems, and is not easy to be detected. At the same time, since the connection object is the second lap joint 32 of the reinforcing beam 2 and the first reinforcing member 3a, the screw 81 can be selected as a self-tapping screw, so that the step of pre-punching can be omitted, and the rivet 82 can be selected as a common rivet without sealing function.

[0111] According to the above technical scheme, the second lap joint 32 is connected with the reinforcing beam 2 through the screw 81, and since the screw 81 is easy to disassemble, the reinforcing beam 2 is easy to replace after being damaged in a collision; and the rivet 82 is relatively simple in process and has high connection reliability.

[0112] Please refer to Figure 8 to Figure 11 In some embodiments, the top of the reinforcing beam 2 is arranged away from the bottom wall 11; the battery device 100 further comprises a second reinforcing member 4, one end of the second reinforcing member 4 is arranged at the top of the reinforcing beam 2, and the other end is connected to the surrounding wall 12.

[0113] It should be noted that the bottom wall 11 of the box body 1 is at the bottom of the battery device 100 in the height direction thereof, and based on this, the "top of the reinforcing beam 2 is arranged away from the bottom wall 11" means that in the height direction of the battery device 100, the top of the reinforcing beam 2 is arranged farther away from the bottom wall 11 of the box body 1.

[0114] Similar to the first reinforcing member 3a, the second reinforcing member 4 can also be made of a metal alloy material, such as an aluminum alloy material, and the structure of the second reinforcing member 4 is not limited in the embodiment; "one end of the second reinforcing member 4 is arranged at the top of the reinforcing beam 2, and the other end is connected to the surrounding wall 12" should be understood as that the connection point of the second reinforcing member 4 and the top of the reinforcing beam 2 is a certain distance away from the surrounding wall 12, and the connection point of the second reinforcing member 4 and the surrounding wall 12 is a certain distance away from the reinforcing beam 2, thereby forming a triangular stable structure, and the connection mode of the second reinforcing member 4 and the reinforcing beam 2 and the box body 1 should be fixed connection, and the specific connection mode can be welding or bolt connection, which is not limited in the embodiment.

[0115] According to the above technical scheme, through the arrangement of the second reinforcing member 4, the second reinforcing member 4 can play a role of bracing between the top of the reinforcing beam 2 and the box body 1, thereby sharing the connection force between the reinforcing beam 2 and the box body 1, to ensure the stable connection between the reinforcing beam 2 and the box body 1.

[0116] Please refer to Figure 12 and Figure 15In some embodiments, the reinforcing beam 2 is arranged beside the surrounding wall 12 along the first direction X, and the reinforcing beam 2 and the surrounding wall 12 abut and are fixedly connected with each other along the first direction X.

[0117] The above embodiments have been explained with respect to the first direction X, and this embodiment will not be repeated. Wherein, the "reinforcing beam 2 and the surrounding wall 12 abut with each other along the first direction X" means that the reinforcing beam 2 and the surrounding wall 12 abut with each other between the two opposite end faces along the first direction X, and are fixedly connected at the position.

[0118] According to the above technical solution, the reinforcing beam 2 and the surrounding wall 12 abut and are fixedly connected with each other along the first direction X, and there is a direct force transmission between the two, which is equivalent to connecting the reinforcing beam 2 and the surrounding wall 12 as a whole, so as to increase the rigidity and strength of the reinforcing beam 2 and the surrounding wall 12 as a whole.

[0119] Please continue to refer to Figure 12 and Figure 15 In some embodiments, the reinforcing beam 2 and the surrounding wall 12 are connected by structural adhesive 5 or sealing rivet 6.

[0120] It should be noted that the "reinforcing beam 2 and the surrounding wall 12 are connected by structural adhesive 5 or sealing rivet 6" means that the reinforcing beam 2 and the surrounding wall 12 can be connected only by structural adhesive 5, only by sealing rivet 6, or by both structural adhesive 5 and sealing rivet 6. "Structural adhesive 5" refers to an adhesive suitable for bonding structural components that can withstand high loads, and is stable in performance within the expected service life, and is resistant to aging, fatigue and corrosion. The types of structural adhesive 5 can be roughly divided into epoxy structural adhesive 5 and acrylate structural adhesive 5, and this embodiment will not be repeated. "Sealing rivet 6" refers to a rivet with sealing function. The sealing rivet 6 has the characteristics of eliminating structural gaps and blocking leakage paths. There are various rivet structures to achieve this function, for example, a sealing rubber sleeve is provided on the rivet rod, and after the rivet rod passes through the connecting hole and deforms to connect two structural components, the sealing rubber sleeve can block the connecting hole to achieve sealing. Another example is that a sealing gasket is provided on the side of the rivet cap facing the rivet rod, which can also achieve sealing after riveting. This embodiment does not make any limitation.

[0121] According to the above technical solution, the reinforcing beam 2 and the surrounding wall 12 are connected by structural adhesive 5, which is simple and efficient, does not affect the sealing performance of the mounting cavity 1a in the box body 1, and has good anti-seismic performance, which is suitable for scenarios where the battery device 100 needs to withstand vibration and impact after being mounted on the vehicle 1000. The sealing rivet 6 has high connection reliability and can also reduce the impact of the hole in the surrounding wall 12 on the sealing performance of the box body 1 through its own sealing function.

[0122] Please continue to refer to Figure 12 andFigure 15 In some embodiments, the side of the surrounding wall 12 away from the bottom wall 11 is formed with a turned-out connecting flange 122; the top of the reinforcing beam 2 is arranged away from the bottom wall 11, and the top of the reinforcing beam 2 is connected to the connecting flange 122.

[0123] It should be noted that the "the side of the surrounding wall 12 away from the bottom wall 11 is formed with a turned-out connecting flange 122" can be understood as that the main part of the surrounding wall 12 extends in the height direction of the battery device 100, and the extension direction of the main part is changed on the side away from the bottom wall 11, and the main part extends outward along the thickness direction of the surrounding wall 12 to form the connecting flange 122 on the side, which can be understood as mainly for covering the box cover 13, and can also be understood as mainly providing a connecting base for the reinforcing beam 2; there are various possibilities for the connecting mode of the top of the reinforcing beam 2 and the connecting flange 122, and the present embodiment does not limit the connecting mode.

[0124] According to the above technical solution, the side of the surrounding wall 12 away from the bottom wall 11 is turned out to form the connecting flange 122, and the connecting flange 122 can provide a connecting base between the top of the reinforcing beam 2 and the surrounding wall 12, thereby ensuring the connection firmness between the reinforcing beam 2 and the surrounding wall 12.

[0125] Please continue to refer to Figure 12 and Figure 15 In some embodiments, the reinforcing beam 2 is connected to the connecting flange 122 through the riveting part 7.

[0126] It should be noted that the "the reinforcing beam 2 is connected to the connecting flange 122 through the riveting part 7" means that the reinforcing beam 2 is riveted to the connecting flange 122, and the main function of the riveting part 7 is to connect the reinforcing beam 2 and the connecting flange 122, and the present embodiment does not limit the specific structure of the riveting part 7.

[0127] According to the above technical solution, the reinforcing beam 2 and the connecting flange 122 are connected through the riveting part 7, which is relatively simple in process, and the reliability of riveting is also relatively high.

[0128] Please continue to refer to Figure 12 and Figure 15 In some embodiments, the riveting part 7 is a pull rivet nut 7a; the box body 1 further comprises a box cover 13 arranged on the surrounding wall 12, and the box cover 13 is formed with a matching flange 131 corresponding to the connecting flange 122, and the matching flange 131 is connected to the pull rivet nut 7a through a bolt.

[0129] It should be noted that the "pull rivet nut 7a" refers to the combination of the core-pulling rivet and the welded nut, which is pulled by the screw rod on the rivet gun to axially compress the pull rivet nut 7a, causing protruding deformation on the end surface, thereby clamping the riveted object to achieve riveting effect. At the same time, due to the presence of the welded nut, the pull rivet nut 7a can also provide a bolt mounting point after installation to achieve the connection of the three structural members.

[0130] In this scheme, the box body of the box 1 further includes a box cover 13 arranged on the surrounding wall 12, so it can be understood that the box body of the box 1 includes the bottom wall 11 and the surrounding wall 12. In order to realize the lap joint with the connecting lap edge 122, the periphery of the box cover 13 also corresponds to form a matching lap edge 131, which is lapped to the connecting lap edge 122 in the height direction of the battery device 100, thereby forming the connection basis of the box cover 13 and the surrounding wall 12; "The matching lap edge 131 is connected to the pull rivet nut 7a by bolts" refers to that the welded nut on the pull rivet nut 7a is between the matching lap edge 131 and the connecting lap edge 122, and the matching lap edge 131 is connected to the pull rivet nut 7a by bolts, thereby realizing the connection of the box cover 13 and the surrounding wall 12.

[0131] According to the above technical scheme, the riveting part 7 is set as the pull rivet nut 7a, which can not only connect the connecting lap edge 122 of the surrounding wall 12 and the reinforcing beam 2 by using its own riveting function, but also can provide a connection point for the box cover 13 by using its screwing function, thereby realizing the connection of the reinforcing beam 2, the surrounding wall 12 and the box cover 13 through one connection point and simplifying the layout of the connection point.

[0132] The application also provides a kind of electric equipment, the electric equipment includes battery device 100, battery device 100 is used to provide electric energy, the specific structure of the battery device 100 refers to the above-mentioned embodiment, since the above-mentioned all technical solutions of all embodiments are used in the electric equipment, at least all beneficial effects brought by the technical solutions of the above-mentioned embodiments are had, which will not be repeated here. Among them, the battery device 100 is used to provide electric energy for the electric equipment, which includes but is not limited to new energy vehicles such as pure electric vehicles, hybrid electric vehicles and range extended vehicles, and engineering vehicles 1000 such as electric excavators and electric bulldozers. It can also include electric unmanned aerial vehicles, electric passenger aircraft and other aircraft.

[0133] Please refer to Figure 2 、 Figure 4 and Figure 5In a first specific embodiment, the battery device 100 provided by the present application comprises a box body 1, a reinforcing beam 2 and a first reinforcing member 3a. The box body 1 has a bottom wall 11, a surrounding wall 12 and a cover plate. The surrounding wall 12 is formed on one side of the bottom wall 11 and cooperates with the bottom wall 11 to define a mounting cavity 1a. The battery monomer 9 is arranged in the mounting cavity 1a. The surrounding wall 12 includes two first side walls 121 which are opposite along a first direction X and extend along a second direction Y. An end of the first side wall 121 away from the bottom wall 11 is outwardly turned to form a connecting flange 122. The reinforcing beam 2 and the first reinforcing member 3a are correspondingly grouped, and two groups are arranged corresponding to the two first side walls 121. The reinforcing beam 2 abuts along the first direction X and is fixedly connected to the outer side of the corresponding first side wall 121 by the structural adhesive 5 or the sealing rivet 6. The top of the reinforcing beam 2 is riveted to the connecting flange 122 by the pull rivet nut 7a. The cover plate is provided with a matching flange 131 corresponding to the connecting flange 122. The matching flange 131 is connected to the pull rivet nut 7a by the bolt. The first reinforcing member 3a is provided with a first lap joint 31 and a second lap joint 32 at opposite ends along the first direction X. The first lap joint 31 extends to the bottom wall 11 of the box body 1. The second lap joint 32 is connected to the bottom of the reinforcing beam 2 by the self-tapping screw or the rivet and is arranged to extend away from the surrounding wall 12 along the first direction X. The reinforcing beam 2 is provided with a mounting portion 21 for mounting to the electric equipment

[0134] Please refer to Figure 2 、 Figure 6 and Figure 7In a second specific embodiment, the battery device 100 provided by the present application comprises a box body 1, a reinforcing beam 2 and a first reinforcing member 3a. The box body 1 has a bottom wall 11, a surrounding wall 12 and a cover plate. The surrounding wall 12 is formed on one side of the bottom wall 11 and cooperates with the bottom wall 11 to define a mounting cavity 1a. The battery monomer 9 is arranged in the mounting cavity 1a. The surrounding wall 12 includes two first side walls 121 which are opposite along a first direction X and extend along a second direction Y. An end of the first side wall 121 away from the bottom wall 11 is outwardly folded to form a connecting flange 122. The reinforcing beam 2 and the first reinforcing member 3a are correspondingly grouped, and two groups are arranged corresponding to the two first side walls 121. The reinforcing beam 2 abuts along the first direction X and is fixedly connected to the outer side of the corresponding first side wall 121 by the structural adhesive 5 or the sealing rivet 6. The top of the reinforcing beam 2 is riveted to the connecting flange 122 by the pull rivet nut 7a. The cover plate is provided with a matching flange 131 corresponding to the connecting flange 122. The matching flange 131 is connected to the pull rivet nut 7a by the bolt. The first reinforcing member 3a is provided with a first lap joint 31 and a second lap joint 32 at opposite ends along the first direction X. The first lap joint 31 extends to the bottom wall 11 of the box body 1, and the first lap joints 31 of the two first reinforcing members 3a are connected to each other to support the bottom wall 11 of the box body 1. The second lap joint 32 is connected to the bottom of the reinforcing beam 2 by the self-tapping screw or the rivet and is arranged to extend away from the surrounding wall 12 along the first direction X. The reinforcing beam 2 is provided with a mounting portion 21 for mounting to the electric equipment.

[0135] Please refer to Figure 2 、 Figure 8 and Figure 9In a third specific embodiment, the battery device 100 includes a box body 1, a reinforcing beam 2, a first reinforcing member 3a and a second reinforcing member 4. The box body 1 has a bottom wall 11, a surrounding wall 12 and a cover plate. The surrounding wall 12 is formed on one side of the bottom wall 11 and cooperates with the bottom wall 11 to define a mounting cavity 1a. The battery monomer 9 is arranged in the mounting cavity 1a. The surrounding wall 12 includes two first side walls 121 opposite to each other along a first direction X and extending along a second direction Y. An end of the first side wall 121 away from the bottom wall 11 is outwardly turned to form a connecting flange 122. The reinforcing beam 2 and the first reinforcing member 3a are correspondingly grouped. Two groups of reinforcing beams 2 are arranged corresponding to the two first side walls 121. The reinforcing beam 2 abuts against the corresponding first side wall 121 along the first direction X and is fixedly connected to the outer side of the corresponding first side wall 121 by the structural adhesive 5 or the sealing rivet 6. The top of the reinforcing beam 2 is connected to the surrounding wall 12 by the second reinforcing member 4. The cover plate is provided with a matching flange 131 corresponding to the connecting flange 122. The matching flange 131 is connected to the connecting flange 122 by bolts. The first reinforcing member 3a is provided with a first lap joint 31 and a second lap joint 32 at opposite ends along the first direction X. The first lap joint 31 extends to the bottom wall 11 of the box body 1. The second lap joint 32 is connected to the bottom of the reinforcing beam 2 by self-tapping screws or rivets and is arranged to extend away from the surrounding wall 12 along the first direction X. The reinforcing beam 2 is provided with a mounting portion 21 for mounting to the electric equipment.

[0136] Please refer to Figure 2 、 Figure 10 and Figure 11In the fourth specific embodiment, the battery device 100 includes a box body 1, a reinforcing beam 2, a first reinforcing member 3a and a second reinforcing member 4. The box body 1 has a bottom wall 11, a surrounding wall 12 and a cover plate. The surrounding wall 12 is formed on one side of the bottom wall 11 and cooperates with the bottom wall 11 to define a mounting cavity 1a. The battery monomer 9 is arranged in the mounting cavity 1a. The surrounding wall 12 includes two first side walls 121 opposite along a first direction X and extending along a second direction Y. An end of the first side wall 121 away from the bottom wall 11 is outwardly turned to form a connecting flange 122. The reinforcing beam 2 and the first reinforcing member 3a are correspondingly grouped, and two groups are arranged corresponding to the two first side walls 121. The reinforcing beam 2 abuts along the first direction X and is fixedly connected to the outer side of the corresponding first side wall 121 through the structural adhesive 5 or the sealing rivet 6. The top of the reinforcing beam 2 is connected to the surrounding wall 12 through the second reinforcing member 4. The cover plate corresponding to the connecting flange 122 is formed with a matching flange 131. The matching flange 131 is connected to the connecting flange 122 through a bolt. The first reinforcing member 3a is formed with a first lap joint 31 and a second lap joint 32 at opposite ends along the first direction X. The first lap joint 31 extends to the bottom wall 11 of the box body 1, and the first lap joints 31 of the two first reinforcing members 3a are connected to each other to support the bottom wall 11 of the box body 1. The second lap joint 32 is connected to the bottom of the reinforcing beam 2 through a self-tapping screw or a rivet and is arranged to extend away from the surrounding wall 12 along the first direction X. The reinforcing beam 2 is provided with a mounting portion 21 for mounting to an electric device.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to some or all of the technical features. These modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and description of the present application. In particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery device comprises: a box body having a bottom wall and a surrounding wall formed on one side of the bottom wall, the surrounding wall and the bottom wall together defining a mounting cavity in which a battery monomer is arranged, the box body comprising a sheet metal formed box body; and a reinforcing beam arranged outside the surrounding wall, the reinforcing beam being provided with a mounting portion for mounting to an electrical equipment. The reinforcing beam comprises a profiled beam.

2. The battery device of claim 1, wherein The bottom wall and / or the surrounding wall are provided as a single-layer wall.

3. The battery device of claim 1, wherein The bottom of the reinforcing beam is arranged close to the bottom wall.

4. The battery device of claim 1, wherein The battery device further comprises a first reinforcing member which is arranged at the bottom of the reinforcing beam and connected to the box body. One end of the first reinforcing member is arranged at the bottom of the reinforcing beam, and the other end is provided with a first lap portion which extends to connect the bottom wall.

5. The battery device of claim 4, wherein The surrounding wall comprises two first side walls opposite in a first direction, and the two first side walls extend in a second direction.

6. The battery device of claim 5, wherein The reinforcing beams and the first reinforcing members are correspondingly grouped, and two groups are arranged corresponding to the two first side walls, and the first lap portions of the two first reinforcing members are connected to each other to support the bottom wall. The first direction and the second direction are arranged intersectingly. The first lap portion is welded to the bottom wall.

7. The battery device of claim 5, wherein The end of the first reinforcing member connected to the bottom of the reinforcing beam is provided with a second lap portion which is arranged away from the surrounding wall.

8. The battery device of claim 4, wherein The second lap portion is connected to the reinforcing beam by screws or rivets.

9. The battery device of claim 8, wherein, The top of the reinforcing beam is arranged away from the bottom wall.

10. The battery device according to any one of claims 1 to 9, wherein The battery device further comprises a second reinforcing member, one end of which is arranged at the top of the reinforcing beam, and the other end is connected to the surrounding wall. The reinforcing beam is arranged laterally to the surrounding wall in the first direction, and the reinforcing beam and the surrounding wall are fixedly connected to each other in the first direction.

11. The battery device according to any one of claims 1 to 9, wherein The reinforcing beam and the surrounding wall are connected by structural adhesive and / or sealing rivets.

12. The battery device of claim 10, wherein, The side of the surrounding wall away from the bottom wall is provided with a reversely arranged connecting flange; 13. The battery device of any one of claims 1 to 9, wherein The top of the reinforcing beam is arranged away from the bottom wall, and the top of the reinforcing beam is connected to the connecting flange. The reinforcing beam is connected to the connecting flange by a riveting portion.

14. The battery device of claim 13, wherein, The riveting portion is a pull rivet nut.

15. The battery device of claim 14, wherein, The box body further comprises a box cover arranged on the surrounding wall, the box cover being provided with a matching flange corresponding to the connecting flange, and the matching flange is connected to the pull rivet nut by bolts. The battery device comprises any one of claims 1 to 15.

16. An electrical device, characterized by ​

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