Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device. The battery device comprises a frame and a battery monomer, the frame comprises a plurality of boundary beams which are sequentially connected end to end to form a containing space. At least part of the battery monomer is accommodated in the accommodating space; wherein the plurality of boundary beams comprise a first boundary beam, the first boundary beam comprises a first main body area and a first thickening area, the first main body area is connected with the first thickening area, and the thickness of the first thickening area is greater than that of the first main body area. The first boundary beam comprises the first thickening area and the first main body area, and the thickness of the first thickening area is larger than that of the first main body area, so that local thickening of the first boundary beam is equivalent, the weight of the first boundary beam can be reduced, the strength of the first boundary beam can be improved, and the risk that the first boundary beam is damaged due to stress is reduced; the structural strength of the battery device is improved, and the structural stability of the battery device is improved.

Description

TECHNICAL FIELD

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

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0003] Battery devices are widely used in portable electronic devices, electric vehicles, power tools, unmanned aerial vehicles, energy storage devices and other fields. In addition to considering the manufacturing cost of the battery device, the structural strength of the battery device is also a problem that cannot be ignored. Therefore, how to enhance the structural strength of the battery device is a technical problem that needs to be solved in the battery technology. CONTENT OF THE INVENTION

[0004] The embodiments of the present application provide a battery device and a power utilization device, which can improve the structural strength of the battery device.

[0005] In a first aspect, the embodiments of the present application provide a battery device, comprising a frame and a battery monomer; the frame comprises a plurality of side beams, the plurality of side beams are sequentially connected in a head-to-tail manner to form an accommodating space; at least part of the battery monomer is accommodated in the accommodating space; wherein the plurality of side beams comprises a first side beam, the first side beam comprises a first main body area and a first thickened area, the first main body area is connected with the first thickened area, and the thickness of the first thickened area is greater than the thickness of the first main body area.

[0006] In the above technical solution, since the first side beam comprises the first thickened area and the first main body area, and the thickness of the first thickened area is greater than the thickness of the first main body area, the local part of the first side beam is thickened, the weight of the first side beam is reduced, the strength of the first side beam is improved, the risk of the first side beam being damaged under stress is reduced, the structural strength of the battery device is improved, and the structural stability of the battery device is improved.

[0007] In some embodiments, the first main body area and the first thickened area are arranged along the extension direction of the first side beam, at least one end of the first main body area is provided with the first thickened area along the extension direction of the first side beam, and the first thickened area is connected with the adjacent side beam. By arranging the first thickened area at the end of the first main body area, when the first side beam is connected with the adjacent side beam, the first thickened area can be connected with the adjacent side beam, thereby enhancing the connection strength between the first side beam and the adjacent side beam; and the contact area between the first thickened area and the adjacent side beam is larger, thereby improving the structural strength of the frame and the structural stability of the frame.

[0008] In some embodiments, two ends of the first main body area are provided with first thickened areas along the extension direction of the first side beam. In this way, when the first side beam is connected to its two adjacent side beams, the first thickened areas can be used to connect the first side beam to the two adjacent side beams, thereby increasing the connection strength between the first side beam and the two adjacent side beams, and improving the structural stability of the frame.

[0009] In some embodiments, the first thickened area is welded to the adjacent side beam. In this way, the welding area between the first thickened area and the adjacent side beam is increased, thereby increasing the volume of the molten pool and the structural strength of the frame.

[0010] In some embodiments, the battery device further comprises a mounting member disposed on the surface of the first thickened area away from the battery cell. In this way, the mounting member is disposed on the first thickened area, which makes the connection between the mounting member and the first side beam more stable, reduces the risk of the mounting member falling off due to insufficient strength of the first side beam, and improves the structural stability of the battery device.

[0011] In some embodiments, the first side beam comprises a plurality of first thickened areas, and each first thickened area is provided with at least one mounting member. In this way, the plurality of first thickened areas can further improve the structural strength of the first side beam, and the plurality of mounting members can share the gravity of the battery device, reduce the mounting burden of a single mounting member, reduce the risk of damage to the mounting member, and improve the structural stability of the battery device.

[0012] In some embodiments, the surface of the first thickened area facing the battery cell is coplanar with the surface of the first main body area facing the battery cell. In this way, the surface of the first thickened area and the surface of the first main body area are flush on the side facing the battery cell, and the first thickened area protrudes from the surface of the first main body area away from the battery cell, thereby reducing the risk of the first thickened area affecting the installation of the battery cell and the risk of the first thickened area scratching the battery cell.

[0013] In some embodiments, the thickness of the first thickened area is H1, the thickness of the first main body area is H2, and 1mm≤H1-H2≤5mm. When H1-H2≥1mm, the first thickened area can have a thicker thickness, thereby improving the structural strength of the first side beam and improving the structural stability of the first side beam. When H1-H2≤5mm, the material used for the first side beam can be reduced, thereby reducing the mass of the first side beam and improving the mass-energy density of the battery device. Therefore, when 1mm≤H1-H2≤5mm, the structural stability of the first side beam can be improved and the mass-energy density of the battery device can be improved.

[0014] In some embodiments, along the height direction of the first side beam, one end of the frame has a first opening in communication with the accommodating space, and the battery device further comprises a first cover body closing the first opening; the first side beam is provided with a first flange portion at one end of the first opening, and the first flange portion is connected to the first cover body. By connecting the first flange portion to the first cover body, the first flange portion can increase the contact area of the frame and the first cover body, thereby improving the connection strength between the frame and the first cover body and improving the structural stability of the battery device.

[0015] In some embodiments, the first flange portion comprises a second main body region and a second thickened region, the second main body region is connected to the second thickened region, and the thickness of the second thickened region is greater than the thickness of the second main body region. By providing the second thickened region, the second thickened region can increase the structural strength of the first flange portion and improve the structural stability of the first flange portion.

[0016] In some embodiments, the second thickened region is connected to the first thickened region, and the second main body region is connected to the first main body region. By connecting the first thickened region to the second thickened region, the first thickened region and the second thickened region can improve the connection strength of the first flange portion and the first side beam, thereby enhancing the structural strength of the frame and improving the structural stability of the frame.

[0017] In some embodiments, the surface of the second thickened region facing the first cover body is coplanar with the surface of the second main body region facing the first cover body. In this way, the second thickened region protrudes from the surface of the second main body region away from the first cover body, reducing the risk of interference of the second thickened region with the first cover body; the connection surface of the first cover body and the first flange portion is more flat, improving the connection stability of the first cover body and the first flange portion.

[0018] In some embodiments, the thickness of the second thickened region is H3, the thickness of the second main body region is H4, and 1mm≤H3-H4≤5mm. When H3-H4≥1mm, the second thickened region can have a thicker thickness, thereby improving the structural strength of the first flange portion and improving the structural stability of the first flange portion; when H3-H4≤5mm, the material use of the first flange portion can be reduced, thereby reducing the mass of the first flange portion and improving the mass energy density of the battery device. Therefore, when 1mm≤H3-H4≤5mm, the structural stability of the first flange portion and the mass energy density of the battery device can be improved.

[0019] In some embodiments, along the height direction of the first side beam, the side frame has a second opening communicating with the accommodating space away from one end of the first opening, the battery device further comprises a second cover body, the second cover body closes the second opening; the first side beam is provided with a second flange portion at one end of the second opening, and the second flange portion is connected to the second cover body. By connecting the second cover body through the second flange portion, the second flange portion can increase the contact area between the side frame and the second cover body, improve the connection stability between the second flange portion and the second cover body, and thus improve the structural strength of the battery device.

[0020] In some embodiments, the second flange portion comprises a third main body region and a third thickened region, the third main body region is connected to the third thickened region, and the thickness of the third thickened region is greater than the thickness of the third main body region. By providing the third thickened region, the third thickened region can increase the structural strength of the second flange portion and improve the structural stability of the second flange portion.

[0021] In some embodiments, the third thickened region is connected to the first thickened region, and the third main body region is connected to the first main body region. By connecting the first thickened region through the third thickened region, the first thickened region and the third thickened region can improve the connection strength of the second flange portion and the first side beam, thereby enhancing the structural strength of the side frame and improving the structural stability of the side frame.

[0022] In some embodiments, the surface of the third thickened region facing the second cover body is coplanar with the surface of the third main body region facing the second cover body. In this way, the third thickened region protrudes from the surface of the third main body region away from the second cover body, reducing the risk of interference of the third thickened region with the second cover body; the connection surface of the second cover body and the second flange portion is smoother, improving the connection stability of the second cover body and the second flange portion.

[0023] In some embodiments, the thickness of the third thickened region is H5, the thickness of the third main body region is H6, and 1mm≤H5-H6≤5mm. When H5-H6≥1mm, the third thickened region can have a thicker thickness, thereby improving the structural strength of the second flange portion and improving the structural stability of the second flange portion; when H5-H6≤5mm, the material usage of the second flange portion can be reduced, thereby reducing the mass of the second flange portion and improving the mass-energy density of the battery device. Therefore, when 1mm≤H6-H5≤5mm, the structural stability of the second flange portion and the mass-energy density of the battery device can be improved.

[0024] In some embodiments, the first thickened region and the first main body region are connected to the first flange portion and the second flange portion. In this way, the first flange portion is connected to the first cover body, the second flange portion is connected to the second cover body, and the first thickened region can connect the first flange portion and the second flange portion, thereby improving the connection strength between the first cover body, the first thickened region and the second cover body, and further improving the structural stability of the battery device.

[0025] Secondly, embodiments of this application provide an electrical device, including a battery device as provided in any embodiment of the first aspect. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0028] Figure 2 Exploded views of battery devices provided in some embodiments of this application;

[0029] Figure 3 Exploded views of a single battery cell provided in some embodiments of this application;

[0030] Figure 4 This is a schematic diagram of the structure of a battery device provided in some embodiments of this application;

[0031] Figure 5 for Figure 4 AA section view;

[0032] Figure 6 for Figure 5 A magnified view of a portion of region A in the middle;

[0033] Figure 7 This is a schematic diagram of the structure of the first side beam provided in some embodiments of this application;

[0034] Figure 8 for Figure 7 BB section view;

[0035] Figure 9 Exploded views of a battery device provided in some embodiments of this application;

[0036] Figure 10 This is a schematic diagram of the structure of a battery device provided in some embodiments of this application;

[0037] Figure 11 for Figure 10 CC section view;

[0038] Figure 12 for Figure 11 A magnified view of a portion of region B in the middle;

[0039] Figure 13A structural schematic view of the first side beam provided for another embodiment of the present application;

[0040] Figure 14 For Figure 13 A D-D cross-sectional view of the first side beam.

[0041] Fig. 1: a frame; 11a: a side beam; 11: a first side beam; 111: a first main body area; 1111: a first surface; 1112: a second surface; 112: a first thickened area; 1121: a third surface; 12: a receiving space; 13: a first opening; 14: a second opening; 2: a hanger; 3: a first cover body; 4: a first flange portion; 41: a second main body area; 42: a second thickened area; 5: a second cover body; 6: a second flange portion; 61: a third main body area; 62: a third thickened area;

[0042] 10: a battery device; 101: a case; 102: a battery cell; 1021: a housing; 10211: a case body; 10212: an end cover; 1022: an electrode assembly; 1023: an electrode terminal; 20: a controller; 30: a motor; 100: a vehicle; X: an extension direction of the first side beam; Y: a thickness direction of the first side beam; Z: a height direction of the first side beam. DETAILED DESCRIPTION

[0043] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, any other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing the specific embodiments 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. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, rather than to describe a particular order or primary and secondary relationship.

[0045] In the present application, the phrase "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments.

[0046] The term “and / or” in the present application is only used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character “ / ” in the present application generally represents an “or” relationship between the front and rear associated objects.

[0047] In the embodiments of the present application, the same reference signs represent the same components, and for the sake of brevity, the detailed description of the same components is omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, and the overall thickness, length, width and other dimensions of the integrated device are only exemplary and should not constitute any limitation on the present application.

[0048] “Multiple” appearing in the present application means two or more (including two).

[0049] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0050] The battery cell includes but is not limited to lithium ion battery, sodium ion battery, sodium lithium ion battery, lithium metal battery, sodium metal battery, lithium sulfur battery, magnesium ion battery, nickel hydrogen battery, nickel cadmium battery, lead-acid battery, etc.

[0051] In some embodiments, the battery cell can include a housing. The housing is used to package components such as electrode assemblies and electrolytes. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0052] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell, or other shaped battery cells. The prismatic battery cell includes a square battery cell, a blade-shaped battery cell, and a multi-prismatic battery cell, such as a hexagonal battery cell, etc.

[0053] The battery apparatus mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, parallel, or mixed connection through a busbar component.

[0054] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells into an independent module.

[0055] As an example, the battery module can be formed by bundling a plurality of battery cells by a cable tie.

[0056] In some embodiments, the battery device can be a battery pack, which can include a box and one or more battery cell assemblies accommodated in the box.

[0057] As an example, the battery cell assembly can be a battery module, which can be accommodated in the box by fixing the battery module in the box.

[0058] As an example, the battery cell assembly can also be accommodated in the box by directly fixing a plurality of battery cells in the box.

[0059] As an example, the box can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected with the frame, so that an enclosed space is formed inside the box to accommodate the battery cell assembly.

[0060] As an example, the box can be part of the chassis structure of a vehicle. For example, the top cover of the box can be at least part of the floor of the vehicle, or the frame of the box can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0061] The battery device generally includes a box and a battery cell accommodated in the box. The box can include a frame including a plurality of side beams connected in sequence to form an accommodation space for accommodating the battery cell. In the application process of the battery device, in order to realize the lightweight of the battery device and improve the mass energy density of the battery device, the frame of the box is generally made of a relatively thin plate. However, the relatively thin frame of the box is not conducive to the connection between adjacent side beams, and the frame needs to bear part of the gravity of the box, resulting in low strength of the frame and affecting the structural stability of the battery device.

[0062] In view of this, in order to improve the structural strength of the battery device, the embodiments of the present application provide a battery device, by setting the first side beam to include a first thickening area and a first main body area, and the thickness of the first thickening area is greater than the thickness of the first main body area, the first thickening area can increase the strength of the first side beam, reduce the risk of the first side beam being damaged under stress, improve the structural strength of the battery device, and improve the structural stability of the battery device.

[0063] The battery device described in the embodiments of the present application is applicable to various electric devices using the battery device, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, such as aircraft, rockets, space shuttles and spaceships.

[0064] The following embodiments are described by taking the electric device as a vehicle for example for convenience of description.

[0065] Please refer to Figure 1 , Figure 1 The structural schematic diagram of the vehicle 100 is provided for some embodiments of the present application. The vehicle 100 is internally provided with the battery device 10, which can be arranged at the bottom, head or tail of the vehicle 100. The battery device 10 can be used for power supply of the vehicle 100, for example, the battery device 10 can be used as the operating power supply of the vehicle 100.

[0066] The vehicle 100 can further include a controller 20 and a motor 30, and the controller 20 is used to control the battery device 10 to supply power to the motor 30, for example, to meet the power demand of the vehicle 100 during starting, navigation and driving.

[0067] In some embodiments of the present application, the battery device 10 can not only be used as the operating power supply of the vehicle 100, but also be used as the driving power supply of the vehicle 100, to replace or partially replace the fuel or natural gas to provide driving power for the vehicle 100.

[0068] Please refer to Figure 2 , Figure 2 The exploded view of the battery device 10 is provided for some embodiments of the present application. The battery device 10 can include a box body 101 and a battery cell 102, and the box body 101 is used to accommodate the battery cell 102.

[0069] The box body 101 is internally formed with a closed space for accommodating the battery cell 102. The box body 101 can adopt various structures. In some embodiments, the box body 101 can include a first cover 3, a frame 1 and a second cover 5, the frame 1 is a hollow structure with two open sides, and the first cover 3 and the second cover 5 are respectively covered on the two open sides of the frame 1 to form the box body 101 with the closed space. The frame 1 can include a plurality of side beams 11a, and the plurality of side beams 11a are sequentially connected in a ring shape to be arranged around the outer periphery of the battery cell 102.

[0070] In the battery device 10, the battery cell 102 can be one or multiple. If the battery cell 102 is multiple, the multiple battery cells 102 can be connected in series, in parallel, or in a mixed connection, where the mixed connection means that the multiple battery cells 102 are connected in series and in parallel. The multiple battery cells 102 can be connected in series, in parallel, or in a mixed connection to form a battery module, and the multiple battery modules can be connected in series, in parallel, or in a mixed connection to form a whole, which is accommodated in the box 101. Alternatively, all the battery cells 102 can be directly connected in series, in parallel, or in a mixed connection, and the whole formed by the battery cells 102 is accommodated in the box 101.

[0071] Please refer to Figure 3 , Figure 3 The battery cell 102 provided in some embodiments of the present application is shown in an exploded view. The battery cell 102 can include a housing 1021 and an electrode assembly 1022, and the electrode assembly 1022 is accommodated in the housing 1021.

[0072] In some embodiments, the housing 1021 can include a shell 10211 and an end cover 10212, and the shell 10211 has an opening, and the end cover 10212 closes the opening of the shell 10211. Here, closing means covering or closing, which can be sealed or unsealed.

[0073] The shell 10211 is a component for accommodating the electrode assembly 1022, and the shell 10211 can be a hollow structure with an opening at one end or at opposite ends. The shell 10211 can have various shapes, such as a cylindrical shape, a cuboid shape, etc. The shell 10211 can be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, etc. The electrode assembly 1022 can be partially located in the shell 10211 or entirely located in the shell 10211.

[0074] The end cover 10212 cooperates with the shell 10211 to define a receiving space for accommodating the electrode assembly 1022 and other components. The end cover 10212 can be connected to the shell 10211 by welding, crimping, or the like to close the opening of the shell 10211. The shape of the end cover 10212 can be adapted to the shape of the shell 10211, such as a rectangular plate structure adapted to a cuboid structure of the shell 10211, or a circular plate structure adapted to a cylindrical structure of the shell 10211. The end cover 10212 can be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, etc. The material of the end cover 10212 can be the same as or different from that of the shell 10211.

[0075] In the embodiment in which the shell 10211 is open at one end, one end cover 10212 can be correspondingly arranged. In the embodiment in which the shell 10211 is open at two opposite ends, two end covers 10212 can be correspondingly arranged, and the two end covers 10212 respectively seal the two openings of the shell 10211, and the two end covers 10212 and the shell 10211 together define the accommodation space.

[0076] In some embodiments, the battery monomer 102 can further include an electrode terminal 1023 arranged on the shell 1021, and the electrode terminal 1023 is used to be electrically connected with the tab of the electrode assembly 1022 to input or output the electric energy of the battery monomer 102. The electrode terminal 1023 can be arranged on the shell 10211 of the shell 1021 or on the end cover 10212 of the shell 1021. The electrode terminal 1023 can be directly connected with the tab, for example, the electrode terminal 1023 is welded with the tab. The electrode terminal 1023 can also be indirectly connected with the tab, for example, the electrode terminal 1023 is indirectly connected with the tab through a current collecting member. The current collecting member can be a metal conductor, for example, copper, iron, aluminum, steel, aluminum alloy, etc.

[0077] Please refer to Figures 4-6 , Figure 4 for the structural schematic diagram of the battery device 10 provided by some embodiments of the present application; Figure 5 for Figure 4 A-A sectional view; Figure 6 for Figure 5 the local enlarged view of the A area in FIG. 10. The present application provides a battery device 10, which includes a frame 1 and a battery monomer 102. The frame 1 includes a plurality of side beams 11a, and the plurality of side beams 11a are sequentially connected in a ring shape to form an accommodation space 12. At least part of the battery monomer 102 is accommodated in the accommodation space 12. Among them, the plurality of side beams 11a includes a first side beam 11, and the first side beam 11 includes a first main body area 111 and a first thickened area 112, the first main body area 111 is connected with the first thickened area 112, and the thickness of the first thickened area 112 is greater than the thickness of the first main body area 111.

[0078] The frame 1 can include a plurality of side beams 11a, and the number of the side beams 11a of the frame 1 can be three, four, five, six, seven, eight, nine, ten, etc. The plurality of side beams 11a are sequentially connected in a ring shape along the extension direction of the side beams 11a to form the accommodation space 12, and at least part of the battery monomer 102 is accommodated in the accommodation space 12, so that the frame 1 is arranged around the battery monomer 102. The two adjacent side beams 11a can be connected by clamping, bonding, welding, etc.

[0079] The edge frame 1 has a first opening 13 and a second opening 14 at two ends thereof along the height direction of the edge beam 11a, and the accommodation space 12 is located between the first opening 13 and the second opening 14. All of the battery monomers 102 can be accommodated in the accommodation space 12, or part of the battery monomers 102 can be located in the accommodation space 12, and the other part can be located outside the accommodation space 12 beyond the first opening 13 or the second opening 14.

[0080] The plurality of edge beams 11a include first edge beams 11, that is, at least part of the edge beams 11a are first edge beams 11. It can be understood that the first edge beams 11 can be one or more in all the edge beams 11a. Taking four edge beams 11a as an example, only one edge beam 11a can be a first edge beam 11, or only two edge beams 11a can be first edge beams 11, or only three edge beams 11a can be first edge beams 11, or all four edge beams 11a can be first edge beams 11. Exemplarily, the edge frame 1 includes four edge beams 11a, two of which are first edge beams 11, and the two first edge beams 11 are oppositely arranged and located at two sides of the battery monomers 102.

[0081] The first main body area 111 and the first thickening area 112 can be integrally formed. The first main body area 111 in the first edge beam 11 can be one or more, and the first thickening area 112 in the first edge beam 11 can be one or more. The number of the first main body areas 111 in the first edge beam 11 can be equal to or different from the number of the first thickening areas 112.

[0082] The first main body area 111 has a first surface 1111 and a second surface 1112 opposite along the thickness direction thereof, and the first surface 1111 is arranged away from the battery monomers 102. The first thickening area 112 can partially protrude from the first surface 1111, or partially protrude from the second surface 1112, or partially protrude from the first surface 1111 and partially protrude from the second surface 1112.

[0083] In the embodiments of the present application, since the first edge beam 11 includes the first main body area 111 and the first thickening area 112, and the thickness of the first thickening area 112 is greater than the thickness of the first main body area 111, it is equivalent to thickening part of the first edge beam 11 (part of the first thickening area 112), which can reduce the weight of the first edge beam 11 and improve the strength of the first edge beam 11, reduce the risk of damage of the first edge beam 11 under stress, improve the structural strength of the battery device 10, and improve the structural stability of the battery device 10.

[0084] In some embodiments, please refer to Figure 7 , Figure 7A structural schematic diagram of the first side beam 11 is provided for some embodiments of the present application. The first main body area 111 and the first thickened area 112 are arranged along the extension direction X of the first side beam. At least one end of the first main body area 111 is provided with the first thickened area 112. The first thickened area 112 is connected with the adjacent side beam 11a along the extension direction X of the first side beam.

[0085] At least one end of the first main body area 111 is provided with the first thickened area 112, so that the first thickened area 112 is located at the end of the first side beam 11.

[0086] Along the extension direction X of the first side beam, only one end of the first main body area 111 can be provided with the first thickened area 112; or both ends of the first main body area 111 can be provided with the first thickened area 112. The two adjacent side beams 11a can both be the first side beam 11. The first thickened area 112 of the two adjacent first side beams 11 can be connected; or the first thickened area 112 of one first side beam 11 is connected with the first main body area 111 of the other first side beam 11. The two adjacent side beams 11a can only have one first side beam 11, and the first thickened area 112 of the first side beam 11 is connected with the other side beam 11a.

[0087] The first thickened area 112 can be connected with the adjacent side beam 11a by welding, bonding, clamping, etc.

[0088] By arranging the first thickened area 112 at the end of the first main body area 111, when the first side beam 11 is connected with the adjacent side beam 11a, the first thickened area 112 can be connected with the adjacent side beam 11a, thereby enhancing the connection strength between the first side beam 11 and the adjacent side beam 11a. The contact area between the first thickened area 112 and the adjacent side beam 11a is larger, which improves the structural strength of the frame 1, thereby improving the structural stability of the frame 1.

[0089] In some embodiments, please continue to refer to Figure 6 Along the extension direction X of the first side beam, both ends of the first main body area 111 are provided with the first thickened area 112.

[0090] The first main body area 111 can be one, and both ends of the first main body area 111 are provided with the first thickened area 112, so that both ends of the first side beam 11 along the extension direction thereof are provided with the first thickened area 112. The first main body area 111 can also be multiple, and both ends of each first main body area 111 are provided with the first thickened area 112, so that both ends and the middle of the first side beam 11 along the extension direction thereof are provided with the first thickened area 112.

[0091] In the embodiment, the first side beam 11 can be connected with the two adjacent side beams 11a by the first thickened area 112 when connecting the two adjacent side beams 11a, so as to increase the connection strength between the first side beam 11 and the two adjacent side beams 11a, and improve the structural stability of the frame 1.

[0092] In some embodiments, the first thickened area 112 is welded with the adjacent side beam 11a.

[0093] The adjacent side beam 11a can be without the first thickened area 112, the first thickened area 112 is welded with the side beam 11a; the adjacent side beam 11a can be the first side beam 11, only one end of the first side beam 11 is provided with the first thickened area 112, the two first thickened areas 112 can be welded, or the first thickened area 112 is welded with the first main body area 111 of the adjacent first side beam 11; the adjacent side beam 11a can be the first side beam 11, both ends of the first side beam 11 are provided with the first thickened area 112, and the first thickened areas 112 of the two first side beams 11 are welded.

[0094] In the embodiment, the welding area between the first thickened area 112 and the adjacent side beam 11a is increased, so as to increase the welding pool between the first thickened area 112 and the adjacent side beam 11a, improve the connection strength between the first thickened area 112 and the adjacent side beam 11a, and further increase the structural strength of the frame 1.

[0095] In some embodiments, please continue to refer to Figures 4-7 The battery device 10 further comprises a mounting piece 2, which is arranged on the surface of the first thickened area 112 away from the battery monomer 102.

[0096] When the battery device 10 is installed on the frame of the vehicle 100, the mounting piece 2 of the battery device 10 can cooperate with the frame to realize the assembly of the battery device 10 and the vehicle 100. For example, the mounting piece 2 and the frame are both provided with mounting holes, and a locking accessory passes through the mounting holes of the mounting piece 2 and the frame to lock the battery device 10 and the vehicle 100, wherein the locking accessory can be a bolt.

[0097] The mounting piece 2 can be one, and one mounting piece 2 is arranged on the surface of one first thickened area 112 away from the battery monomer 102. The mounting piece 2 can also be multiple, and multiple mounting pieces 2 can be arranged on the surface of the same first thickened area 112 away from the battery monomer 102; or multiple mounting pieces 2 can be arranged on the surfaces of multiple first thickened areas 112 away from the battery monomer 102, for example, the mounting piece 2 corresponds to the first thickened area 112 one by one.

[0098] As an example, as Figure 6As shown, the first thickened region 112 has a third surface 1121 facing away from the battery monomer 102, and the third surface 1121 is farther away from the battery monomer 102 than the first main body region 111 along the thickness direction Y of the first edge beam. The mounting member 2 is arranged on the third surface 1121.

[0099] In the embodiment, the mounting member 2 is arranged on the first thickened region 112, so that the connection between the mounting member 2 and the first edge beam 11 is more stable, the risk of the mounting member 2 falling off due to insufficient strength of the first edge beam 11 is reduced, and the structural stability of the battery device 10 is improved.

[0100] In some embodiments, please continue to refer to Figure 7 . The first edge beam 11 includes a plurality of first thickened regions 112, and each first thickened region 112 is provided with at least one mounting member 2.

[0101] Each first thickened region 112 can be provided with only one mounting member 2; or each first thickened region 112 can be provided with a plurality of mounting members 2. The number of mounting members 2 provided by the plurality of first thickened regions 112 can be equal or not equal.

[0102] The plurality of first thickened regions 112 are arranged at intervals along the extension direction X of the first edge beam, and two adjacent first thickened regions 112 are connected by the first main body region 111. Exemplarily, as Figure 7 shown, the first edge beam 11 includes four first thickened regions 112, and each first thickened region 112 is provided with one mounting member 2.

[0103] In the embodiment, the plurality of first thickened regions 112 can further improve the structural strength of the first edge beam 11, and the plurality of mounting members 2 can share the gravity of the battery device 10, reduce the mounting burden of a single mounting member 2, reduce the risk of damage to the mounting member 2, and improve the structural stability of the battery device 10.

[0104] In some embodiments, the surface of the first thickened region 112 facing the battery monomer 102 is coplanar with the surface of the first main body region 111 facing the battery monomer 102.

[0105] The surface of the first thickened region 112 and the surface of the first main body region 111 facing the battery monomer 102 are the surface of the first edge beam 11 facing the battery monomer 102, and the surface of the first edge beam 11 facing the battery monomer 102 is a plane. In some embodiments, the surface of the first main body region 111 facing the battery monomer 102 is the second surface 1112, that is, the surface of the first thickened region 112 facing the battery monomer 102 is coplanar with the second surface 1112.

[0106] In the embodiment, the surface of the first thickened region 112 on the side facing the battery monomer 102 is flush with the surface of the first main body region 111, and the surface of the first thickened region 112 protruding from the first main body region 111 away from the battery monomer 102, thereby reducing the risk of the first thickened region 112 affecting the installation of the battery monomer 102, and reducing the risk of the first thickened region 112 scratching the battery monomer 102.

[0107] In some embodiments, please refer to Figure 8 , Figure 8 for Figure 7 C-C cross-sectional view. The thickness of the first thickened region 112 is H1, the thickness of the first main body region 111 is H2, 1mm≤H1-H2≤5mm.

[0108] The thickness of the first thickened region 112 is the size of the first thickened region 112 in the thickness direction Y along the first edge beam. The thickness of the first main body region 111 is the size of the first main body region 111 in the thickness direction Y along the first edge beam.

[0109] H1-H2 can be any one of 1mm, 1.1mm, 1.3mm, 1.5mm, 1.7mm, 1.9mm, 2mm, 2.1mm, 2.3mm, 2.5mm, 2.7mm, 2.9mm, 3mm, 3.1mm, 3.3mm, 3.5mm, 3.7mm, 3.9mm, 4mm, 4.1mm, 4.3mm, 4.5mm, 4.7mm, 4.9mm, 5mm or any range value between any two of them.

[0110] When H1-H2≥1mm, the first thickened region 112 can have a thicker thickness, thereby improving the structural strength of the first edge beam 11 and improving the structural stability of the first edge beam 11; when H1-H2≤5mm, the material use of the first edge beam 11 can be reduced, thereby reducing the mass of the first edge beam 11 and improving the mass energy density of the battery device 10. Therefore, when 1mm≤H1-H2≤5mm, the structural stability of the first edge beam 11 and the mass energy density of the battery device 10 can be improved.

[0111] In some embodiments, please refer to Figures 9-12 , Figure 9 for the explosion diagram of the battery device 10 provided by some other embodiments of the present application; Figure 10 for the structural schematic diagram of the battery device 10 provided by some other embodiments of the present application; Figure 11 for Figure 10 C-C cross-sectional view; Figure 12 for Figure 11The local enlarged view of the middle B region. Along the height direction Z of the first edge beam, one end of the frame 1 has a first opening 13 which communicates with the accommodating space 12, and the battery device 10 further comprises a first cover 3 which closes the first opening 13. The first edge beam 11 is provided with a first flange portion 4 at one end of the first opening 13, and the first flange portion 4 is connected to the first cover 3.

[0112] The frame 1 is a hollow structure with two open sides, and one open side of the frame 1 forms the first opening 13. The first cover 3 can be a flat plate structure which covers the first opening 13 of the frame 1, or the first cover 3 can be a hollow structure with one open side which communicates with the accommodating space 12 of the frame 1, and the hollow structure and the frame 1 can be used to accommodate the battery monomer 102.

[0113] The first flange portion 4 is located at one end of the first edge beam 11 along the height direction Z of the first edge beam. The first flange portion 4 can protrude from the surface of the first thickened region 112 facing the battery monomer 102, or protrude from the surface of the first thickened region 112 away from the battery monomer 102. One surface of the first flange portion 4 along the thickness direction is in contact with the first cover 3, so as to increase the contact area of the first flange portion 4 and the first cover 3, thereby improving the connection strength of the first flange portion 4 and the first cover 3, and improving the structural stability of the box body 101.

[0114] The first flange portion 4 can be integrally bent and formed with the first edge beam 11, or the first flange portion 4 and the first edge beam 11 can be separately arranged and connected, for example, the first flange portion 4 and the first edge beam 11 are welded.

[0115] By arranging the first flange portion 4 to connect the first cover 3, the first flange portion 4 can increase the contact area of the frame 1 and the first cover 3, thereby improving the connection strength between the frame 1 and the first cover 3, and improving the structural stability of the battery device 10.

[0116] In some embodiments, please refer to Figure 13 , Figure 13 The structural schematic diagram of the first edge beam 11 provided by some other embodiments of the present application. The first flange portion 4 comprises a second main body region 41 and a second thickened region 42, the second main body region 41 is connected to the second thickened region 42, and the thickness of the second thickened region 42 is greater than the thickness of the second main body region 41.

[0117] The first flanging portion 4 can include only one second thickening area 42 connected to the second main body area 41. Alternatively, the first flanging portion 4 can include a plurality of second thickening areas 42, which can be connected to the same second main body area 41 or can be connected to a plurality of second main body areas 41. The second main body area 41 and the second thickening area 42 can be integrally formed, for example, by being integrally cast formed. Alternatively, the second main body area 41 and the second thickening area 42 can be separately provided and connected, for example, by being welded.

[0118] The second thickening area 42 can protrude from the surface of the second main body area 41 away from the first cover 3, and the surface of the second thickening area 42 facing the first cover 3 and the surface of the second main body area 41 facing the first cover 3 can be coplanar, so that the thickness of the second thickening area 42 is greater than the thickness of the second main body area 41. Alternatively, the second thickening area 42 can protrude from the surface of the second main body area 41 facing the first cover 3, and the surface of the second thickening area 42 away from the first cover 3 and the surface of the second main body area 41 away from the first cover 3 can be coplanar, so that the thickness of the second thickening area 42 is greater than the thickness of the second main body area 41. Alternatively, the second thickening area 42 can protrude from the surface of the second main body area 41 away from the first cover 3 and protrude from the surface of the second main body area 41 facing the first cover 3, so that the thickness of the second thickening area 42 is greater than the thickness of the second main body area 41.

[0119] By providing the second thickening area 42, the structural strength of the first flanging portion 4 can be increased, and the structural stability of the first flanging portion 4 can be improved.

[0120] In some embodiments, please continue to refer to Figure 13 The second thickening area 42 is connected to the first thickening area 112, and the second main body area 41 is connected to the first main body area 111.

[0121] The first thickening area 112 and the second thickening area 42 can be one-to-one correspondence, one first thickening area 112 connected to one second thickening area 42. Alternatively, one first thickening area 112 can be connected to a plurality of second thickening areas 42. Alternatively, one second thickening area 42 can be connected to a plurality of first thickening areas 112.

[0122] The first main body area 111 and the second main body area 41 can be one-to-one correspondence, one first main body area 111 connected to one second main body area 41. Alternatively, one first main body area 111 can be connected to a plurality of second main body areas 41. Alternatively, one second main body area 41 can be connected to a plurality of first main body areas 111.

[0123] The first thickening area 112 and the second thickening area 42 can improve the connection strength of the first flanging part 4 and the first edge beam 11, thereby enhancing the structural strength of the frame 1 and improving the structural stability of the frame 1.

[0124] In some embodiments, the surface of the second thickening area 42 facing the first cover 3 is coplanar with the surface of the second main body area 41 facing the first cover 3.

[0125] The surface of the second thickening area 42 facing the first cover 3 is coplanar with the surface of the second main body area 41 facing the first cover 3, that is, the second thickening area 42 protrudes from the surface of the second main body area 41 away from the first cover 3, so that the thickness of the second thickening area 42 is greater than the thickness of the second main body area 41.

[0126] In the present embodiment, the second thickening area 42 protrudes from the surface of the second main body area 41 away from the first cover 3, reducing the risk of interference of the second thickening area 42 with the first cover 3; the connecting surface of the first cover 3 and the first flanging part 4 is smoother, improving the connection stability of the first cover 3 and the first flanging part 4.

[0127] In some embodiments, please refer to Figure 14 , Figure 14 for Figure 13 D-D cross-sectional view. The thickness of the second thickening area 42 is H3, the thickness of the second main body area 41 is H4, 1mm≤H3-H4≤5mm.

[0128] The thickness of the second thickening area 42 is the size of the second thickening area 42 in the thickness direction of the first flanging part 4. The thickness of the second main body area 41 is the size of the second main body area 41 in the thickness direction of the first flanging part 4.

[0129] H3-H4 can be any one of 1mm, 1.1mm, 1.3mm, 1.5mm, 1.7mm, 1.9mm, 2mm, 2.1mm, 2.3mm, 2.5mm, 2.7mm, 2.9mm, 3mm, 3.1mm, 3.3mm, 3.5mm, 3.7mm, 3.9mm, 4mm, 4.1mm, 4.3mm, 4.5mm, 4.7mm, 4.9mm, 5mm or a range value between any two of them.

[0130] When H3-H4≥1mm, the second thickening area 42 can have a greater thickness, thereby improving the structural strength of the first flange portion 4 and improving the structural stability of the first flange portion 4; when H3-H4≤5mm, the material usage of the first flange portion 4 can be reduced, thereby reducing the mass of the first flange portion 4 and improving the mass energy density of the battery device 10. Therefore, when 1mm≤H3-H4≤5mm, the structural stability of the first flange portion 4 can be improved and the mass energy density of the battery device 10 can be improved.

[0131] In some embodiments, please continue to refer to Figures 9-14 . Along the height direction Z of the first edge beam, the edge frame 1 has a second opening 14 at one end away from the first opening 13, which communicates with the accommodation space 12, and the battery device 10 further comprises a second cover 5, which closes the second opening 14; the first edge beam 11 is provided with a second flange portion 6 at one end of the second opening 14, and the second flange portion 6 is connected to the second cover 5.

[0132] The edge frame 1 is a hollow structure with two open sides, and the open side of the edge frame 1 opposite to the first opening 13 forms the second opening 14. The second cover 5 can be a flat plate structure, and the second cover 5 is arranged on the second opening 14 of the edge frame 1; the second cover 5 can also be a hollow structure with one open side, and the hollow structure communicates with the accommodation space 12 of the edge frame 1, and the hollow structure and the edge frame 1 can be used to accommodate the battery monomer 102.

[0133] The second flange portion 6 and the first flange portion 4 are respectively located at two ends of the first edge beam 11 along the height direction Z of the first edge beam. The second flange portion 6 can protrude from the surface of the second thickening area 42 facing the battery monomer 102, or can protrude from the surface of the second thickening area 42 away from the battery monomer 102. One surface of the second flange portion 6 along the thickness direction thereof is in contact with the second cover 5, so as to increase the contact area between the second flange portion 6 and the second cover 5, thereby improving the connection strength between the second flange portion 6 and the second cover 5 and improving the structural stability of the box body 101.

[0134] The second flange portion 6 can be integrally bent and formed with the first edge beam 11; or the second flange portion 6 and the first edge beam 11 can be separately arranged and connected, for example, the second flange portion 6 and the first edge beam 11 are connected by welding.

[0135] By arranging the second flange portion 6 to connect the second cover 5, the second flange portion 6 can increase the contact area between the edge frame 1 and the second cover 5, improve the connection stability between the second flange portion 6 and the second cover 5, and thereby improve the structural strength of the battery device 10.

[0136] In some embodiments, the edge beam 11a without the first thickened area 112 can also be provided with the first and second flanging parts 4 and 6, the first flanging part 4 being arranged at one end of the edge beam 11a located at the first opening 13, and the second flanging part 6 being arranged at one end of the edge beam 11a located at the second opening 14.

[0137] In the embodiments in which the cabinet 101 comprises a top cover, the frame 1 and a bottom plate, the top cover can be the first cover body 3 and the bottom plate can be the second cover body 5, or the bottom plate can be the first cover body 3 and the top cover can be the second cover body 5.

[0138] In some embodiments, the second flanging part 6 comprises a third main body area 61 and a third thickened area 62, the third main body area 61 being connected to the third thickened area 62, and the thickness of the third thickened area 62 being greater than the thickness of the third main body area 61.

[0139] The second flanging part 6 can comprise only one third thickened area 62 connected to the third main body area 61. Alternatively, the second flanging part 6 can comprise a plurality of third thickened areas 62, which can be connected to the same third main body area 61, or the plurality of third thickened areas 62 can be connected to a plurality of third main body areas 61. The third main body area 61 and the third thickened area 62 can be integrally formed, for example, by being integrally cast molded, or the third main body area 61 and the third thickened area 62 can be separately arranged and connected, for example, by being welded.

[0140] The third thickened area 62 can protrude from the surface of the third main body area 61 away from the surface of the second cover body 5, and the surface of the third thickened area 62 facing the surface of the second cover body 5 and the surface of the third main body area 61 facing the surface of the second cover body 5 can be coplanar, so that the thickness of the third thickened area 62 is greater than the thickness of the third main body area 61. Alternatively, the third thickened area 62 can protrude from the surface of the third main body area 61 facing the surface of the second cover body 5, and the surface of the third thickened area 62 away from the surface of the second cover body 5 and the surface of the third main body area 61 away from the surface of the second cover body 5 can be coplanar, so that the thickness of the third thickened area 62 is greater than the thickness of the third main body area 61. Alternatively, the third thickened area 62 can protrude from the surface of the third main body area 61 away from the surface of the second cover body 5, and the third thickened area 62 can protrude from the surface of the third main body area 61 facing the surface of the second cover body 5, so that the thickness of the third thickened area 62 is greater than the thickness of the third main body area 61.

[0141] By arranging the third thickened area 62, the third thickened area 62 can increase the structural strength of the second flanging part 6 and improve the structural stability of the second flanging part 6.

[0142] In some embodiments, the third thickened area 62 is connected to the first thickened area 112, and the third main body area 61 is connected to the first main body area 111.

[0143] The first thickening area 112 can be in one-to-one correspondence with the third thickening area 62, one first thickening area 112 being connected to one third thickening area 62; one first thickening area 112 can also be connected to multiple third thickening areas 62; or one third thickening area 62 can be connected to multiple first thickening areas 112.

[0144] The first main body area 111 can be in one-to-one correspondence with the third main body area 61, one first main body area 111 being connected to one third main body area 61; one first main body area 111 can also be connected to multiple third main body areas 61; or one third main body area 61 can be connected to multiple first main body areas 111.

[0145] The first thickening area 112 is connected to the third thickening area 62, and the first thickening area 112 and the third thickening area 62 can improve the connection strength of the second flanging portion 6 and the first edge beam 11, thereby enhancing the structural strength of the frame 1 and improving the structural stability of the frame 1.

[0146] In some embodiments, the surface of the third thickening area 62 facing the second cover 5 is coplanar with the surface of the third main body area 61 facing the second cover 5.

[0147] The surface of the third thickening area 62 facing the second cover 5 is coplanar with the surface of the third main body area 61 facing the second cover 5, that is, the third thickening area 62 protrudes from the surface of the third main body area 61 away from the second cover 5, so that the thickness of the third thickening area 62 is greater than the thickness of the third main body area 61.

[0148] In the present embodiment, the third thickening area 62 protrudes from the surface of the third main body area 61 away from the second cover 5, reducing the risk of the third thickening area 62 interfering with the second cover 5; the connecting surface of the second cover 5 and the second flanging portion 6 is smoother, improving the connection stability of the second cover 5 and the second flanging portion 6.

[0149] In some embodiments, please continue to refer to Figure 14 The thickness of the third thickening area 62 is H5, the thickness of the third main body area 61 is H6, and 1mm≤H5-H6≤5mm.

[0150] The thickness of the third thickening area 62 is the size of the third thickening area 62 in the thickness direction of the second flanging portion 6. The thickness of the third main body area 61 is the size of the third main body area 61 in the thickness direction of the second flanging portion 6.

[0151] H5-H6 can be any one of the point values of 1mm, 1.1mm, 1.3mm, 1.5mm, 1.7mm, 1.9mm, 2mm, 2.1mm, 2.3mm, 2.5mm, 2.7mm, 2.9mm, 3mm, 3.1mm, 3.3mm, 3.5mm, 3.7mm, 3.9mm, 4mm, 4.1mm, 4.3mm, 4.5mm, 4.7mm, 4.9mm, 5mm or a range value between any two of them.

[0152] When H5-H6≥1mm, the third thickening area 62 can have a thicker thickness, thereby improving the structural strength of the second flanging part 6 and improving the structural stability of the second flanging part 6; when H5-H6≤5mm, the material use of the second flanging part 6 can be reduced, thereby reducing the mass of the second flanging part 6 and improving the mass energy density of the battery device 10. Therefore, when 1mm≤H6-H5≤5mm, the structural stability of the second flanging part 6 can be improved and the mass energy density of the battery device 10 can be improved.

[0153] In some embodiments, the first thickening area 112 and the first main area 111 are connected to the first flanging part 4 and the second flanging part 6.

[0154] The first thickening area 112 and the first main area 111 are arranged along the extension direction X of the first edge beam. Along the height direction Z of the first edge beam, the first thickening area 112 is connected to the first flanging part 4 and the second flanging part 6; along the height direction Z of the first edge beam, the first main area 111 is connected to the first flanging part 4 and the second flanging part 6.

[0155] In the present embodiment, the first flanging part 4 is connected to the first cover 3, the second flanging part 6 is connected to the second cover 5, and the first thickening area 112 can be connected to the first flanging part 4 and the second flanging part 6, thereby improving the connection strength between the first cover 3, the first thickening area 112 and the second cover 5, and further improving the structural stability of the battery device 10.

[0156] The present application provides a kind of power consumption device, including the battery device 10 as any one of the embodiments of the first aspect is provided.

[0157] Please continue to refer to Figures 9-12The embodiment of the present application provides a battery device 10, which comprises a first cover 3, a frame 1, a second cover 5, a first flange part 4, a second flange part 6 and a battery cell 102. The frame 1 comprises a plurality of side beams 11a, the plurality of side beams 11a are sequentially connected in head-to-tail mode to form an accommodating space 12, and at least part of the battery cell 102 is accommodated in the accommodating space 12. The frame 1 has opposite first and second openings 13 and 14, the side beam 11a is provided with the first flange part 4 at one end of the first opening 13 along the height direction of the side beam 11a, the first cover 3 covers the first opening 13 and is connected with the first flange part 4, and the side beam 11a is provided with the second flange part 6 at one end of the second opening 14 along the height direction of the side beam 11a, the second cover 5 covers the second opening 14 and is connected with the second flange part 6. Wherein the plurality of side beams 11a comprises a first side beam 11, the first side beam 11 comprises a first main body area 111 and a first thickening area 112, the first main body area 111 is connected with the first thickening area 112, and the thickness of the first thickening area 112 is greater than the thickness of the first main body area 111. The surface of the first thickening area 112 away from the battery cell 102 is provided with a mounting part 2. The two ends of the first main body area 111 are provided with the first thickening area 112, and the first thickening area 112 connects adjacent side beams 11a. The first flange part 4 comprises a second main body area 41 and a second thickening area 42, the second main body area 41 is connected with the second thickening area 42, the second flange part 6 comprises a third main body area 61 and a third thickening area 62, the third main body area 61 is connected with the third thickening area 62, the first thickening area 112 is connected with the second thickening area 42 and the third thickening area 62, and the first main body area 111 is connected with the second main body area 41 and the third main body area 61.

[0158] The first edge beam 11 includes the first thickened area 112, and the thickness of the first thickened area 112 is greater than the thickness of the first main area 111. The first thickened area 112 can increase the strength of the first edge beam 11, reduce the risk of damage of the first edge beam 11 under stress, improve the structural strength of the battery device 10, and improve the structural stability of the battery device 10. When the first edge beam 11 connects two adjacent edge beams 11a, the connection can be achieved by the first thickened area 112, thereby increasing the connection strength between the first edge beam 11 and the two adjacent edge beams 11a, and improving the structural stability of the frame 1. The mounting member 2 is arranged on the first thickened area 112, so that the connection between the mounting member 2 and the first edge beam 11 is more stable, and the risk of the mounting member 2 falling off due to insufficient strength of the first edge beam 11 is reduced. The first flanging part 4 is arranged to connect the first cover 3, and the first flanging part 4 can increase the contact area between the frame 1 and the first cover 3, thereby improving the connection strength between the frame 1 and the first cover 3. The second thickened area 42 is arranged to increase the structural strength of the first flanging part 4 and improve the structural stability of the first flanging part 4. The first thickened area 112 is connected to the second thickened area 42, and the first thickened area 112 and the second thickened area 42 can improve the connection strength between the first flanging part 4 and the first edge beam 11, thereby enhancing the structural strength of the frame 1. The second flanging part 6 is arranged to connect the second cover 5, and the second flanging part 6 can increase the contact area between the frame 1 and the second cover 5, improve the connection stability between the second flanging part 6 and the second cover 5, and improve the structural strength of the battery device 10. The third thickened area 62 is arranged to increase the structural strength of the second flanging part 6 and improve the structural stability of the second flanging part 6. The first thickened area 112 is connected to the third thickened area 62, and the first thickened area 112 and the third thickened area 62 can improve the connection strength between the second flanging part 6 and the first edge beam 11, thereby enhancing the structural strength of the frame 1.

[0159] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0160] The above embodiments are only used to illustrate the technical solutions of the present application, and are not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery device, characterized by, The battery device comprises: a frame comprising a plurality of side beams connected in sequence to form a containing space; a battery cell at least partially contained in the containing space; wherein the plurality of side beams comprises a first side beam, the first side beam comprises a first main body region and a first thickened region, the first main body region is connected with the first thickened region, and the thickness of the first thickened region is greater than the thickness of the first main body region.

2. The battery device of claim 1, wherein The first main body region and the first thickened region are arranged along the extension direction of the first side beam, at least one end of the first main body region is provided with the first thickened region along the extension direction of the first side beam, and the first thickened region is connected with the adjacent side beam.

3. The battery device of claim 2, wherein Both ends of the first main body region are provided with the first thickened region along the extension direction of the first side beam.

4. The battery device of claim 2, wherein The first thickened region is connected with the adjacent side beam by welding.

5. The battery device of claim 1, wherein The battery device further comprises a mounting member provided on the surface of the first thickened region away from the battery cell.

6. The battery device of claim 5, wherein The first side beam comprises a plurality of first thickened regions, and each first thickened region is provided with at least one mounting member.

7. The battery device of claim 1, wherein The surface of the first thickened region facing the battery cell is coplanar with the surface of the first main body region facing the battery cell.

8. The battery device of claim 1, wherein, The thickness of the first thickened region is H1, the thickness of the first main body region is H2, and 1mm≤H1-H2≤5mm.

9. The battery device of any one of claims 1-8, wherein, Along the height direction of the first side beam, one end of the frame has a first opening communicating with the containing space, and the battery device further comprises a first cover body closing the first opening. The first side beam at one end of the first opening is provided with a first flange portion connected to the first cover body.

10. The battery device of claim 9, wherein, The first flange portion comprises a second main body region and a second thickened region, the second main body region is connected with the second thickened region, and the thickness of the second thickened region is greater than the thickness of the second main body region.

11. The battery device of claim 10, wherein, The second thickened region is connected with the first thickened region, and the second main body region is connected with the first main body region.

12. The battery device of claim 10, wherein, The surface of the second thickened region facing the first cover body is coplanar with the surface of the second main body region facing the first cover body.

13. The battery device of claim 10, wherein, The thickness of the second thickened region is H3, the thickness of the second main body region is H4, and 1mm≤H3-H4≤5mm.

14. The battery device of claim 9, wherein, Along the height direction of the first side beam, one end of the frame away from the first opening has a second opening communicating with the containing space, and the battery device further comprises a second cover body closing the second opening. The first side beam at one end of the second opening is provided with a second flange portion connected to the second cover body.

15. The battery device of claim 14, wherein, The second flange portion comprises a third main body region and a third thickened region, the third main body region is connected with the third thickened region, and the thickness of the third thickened region is greater than the thickness of the third main body region.

16. The battery device of claim 15, wherein, The third thickened region is connected with the first thickened region, and the third main body region is connected with the first main body region.

17. The battery device of claim 15, wherein, The surface of the third thickened region facing the second cover body is coplanar with the surface of the third main body region facing the second cover body.

18. The battery device of claim 15, wherein, The third thickened zone has a thickness H5, and the third main zone has a thickness H6, 1 mm≤H5-H6≤5 mm.

19. The battery device of claim 14, wherein, The first thickened zone and the first main zone are connected to the first flange portion and the second flange portion.

20. An electrical device, comprising: A battery device comprising the battery device according to any one of claims 1 to 19.

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