Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device. The battery device comprises a frame, a battery monomer and a reinforcing piece, the frame comprises a plurality of edge beams, the edge beams are sequentially connected end to end to form a containing space, the edge beams comprise first edge beams, the first edge beams are provided with first surfaces deviating from the containing space and second surfaces facing the containing space, the first edge beams are provided with hanging parts and grooves, and the hanging parts are arranged on the first surfaces; the groove is recessed from the second surface into the mounting piece; at least part of the battery monomer is accommodated in the accommodating space; at least part of the reinforcing piece is contained in the groove, and the reinforcing piece is used for reinforcing the strength of the hanging piece. The reinforcer can reinforce the strength of the mounting piece, reduce the risk that the mounting piece is damaged when bearing the battery device, and improve the structural strength of the battery device, thereby improving the structural stability of the battery device.

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 an important 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. UTILITY MODEL CONTENT

[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, which comprises a frame, a battery monomer and a reinforcing member. 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 accommodation space, the plurality of side beams comprise a first side beam, the first side beam has a first surface facing away from the accommodation space and a second surface facing the accommodation space, the first side beam is provided with a mounting member and a groove, the mounting member is arranged on the first surface, and the groove is recessed from the second surface into the mounting member; at least part of the battery monomer is accommodated in the accommodation space; at least part of the reinforcing member is accommodated in the groove, and the reinforcing member is used to reinforce the strength of the mounting member.

[0006] In the above technical solution, the mounting member is arranged on the first surface of the first side beam, the battery device can be connected with an external device through the mounting member to realize the assembly of the battery device and the external device. The groove is recessed from the second surface into the mounting member, which reduces the material use of the mounting member and reduces the manufacturing cost of the mounting member. The groove helps to accommodate the reinforcing member in the mounting member through the groove, which reduces the installation difficulty of the reinforcing member. By accommodating at least part of the reinforcing member in the groove, the reinforcing member can reinforce the strength of the mounting member, reduce the risk of damage to the mounting member when bearing the battery device, improve the structural strength of the battery device, and thus improve the structural stability of the battery device.

[0007] In some embodiments, along the height direction of the first side beam, the groove has oppositely arranged first and second groove wall surfaces, and the reinforcing member abuts against the first and second groove wall surfaces. By arranging the reinforcing member to abut against the first and second groove wall surfaces along the height direction of the first side beam, the reinforcing member can enhance the structural strength of the mounting member along the height direction of the first side beam, and reduce the risk of the mounting member being damaged by external force.

[0008] In some embodiments, along the extension direction of the first side beam, the groove has oppositely arranged third and fourth groove wall surfaces, and the reinforcing member abuts against the third and fourth groove wall surfaces. By arranging the reinforcing member to abut against the third and fourth groove wall surfaces along the extension direction of the first side beam, on the one hand, the position of the reinforcing member in the groove can be more stable, so that the position of the reinforcing member is more stable when the mounting member is stressed; on the other hand, the structural strength of the mounting member can be further improved, and the risk of the mounting member being damaged by external force can be reduced.

[0009] In some embodiments, the reinforcing member is internally provided with a cavity. In this way, on the one hand, the material use of the reinforcing member can be reduced, and the material cost of the reinforcing member can be reduced; on the other hand, the mass of the reinforcing member can be reduced, so that the mass of the battery device can be reduced, and the load requirement of the mounting member can be reduced.

[0010] In some embodiments, the groove is formed with an opening in the second surface, and the cavity extends to one end of the reinforcing member facing the opening. In this way, on the one hand, the material use of the reinforcing member can be further reduced; on the other hand, the extension direction of the cavity can be easily identified, and the risk of incorrect installation of the reinforcing member can be reduced.

[0011] In some embodiments, the first surface and the second surface are oppositely arranged along the thickness direction of the first side beam, and the two ends of the reinforcing member are respectively located on the two sides of the first surface along the thickness direction of the first side beam. In this way, the reinforcing member can enhance the connection strength between the mounting member and the first side beam, reduce the risk of the connection position between the mounting member and the first side beam being broken, improve the structural strength of the frame, and thus improve the structural stability of the battery device.

[0012] In some embodiments, the reinforcing member is entirely located in the groove. In this way, the influence of the reinforcing member on the accommodation space can be reduced, so that the risk of the battery monomer being damaged due to the contact of the reinforcing member with the battery monomer can be reduced.

[0013] In some embodiments, along the direction in which the first surface points to the second surface, the reinforcing member exceeds the second surface. In this way, the reinforcing member can improve the strength of the contact position between the mounting member and the first side beam, reduce the risk of the mounting member falling off the first side beam, and improve the structural stability of the frame.

[0014] In some embodiments, the mounting piece is integrally formed with the edge beam. In this way, on the one hand, the connection strength of the mounting piece and the edge beam is improved, so that the connection of the mounting piece and the edge beam is more stable; on the other hand, the recess is formed on the second surface and the mounting piece is formed at a position corresponding to the recess on the first surface, which reduces the processing difficulty of the mounting piece, reduces the processing cost of the mounting piece, and thus reduces the processing cost of the battery device.

[0015] In some embodiments, the material of the reinforcing piece is glass fiber, carbon fiber, ceramic, steel, aluminum or aluminum alloy. In this way, the reinforcing piece has high strength, which is conducive to improving the structural strength of the mounting piece and improving the structural stability of the mounting piece.

[0016] In some embodiments, the mounting piece is a plurality of mounting pieces, and the plurality of mounting pieces are arranged at intervals along the extension direction of the edge beam. In this way, each mounting piece can share the weight of the battery device, reduce the risk of damage to the mounting piece, and improve the structural stability of the battery device.

[0017] In some embodiments, the thickness of the edge beam is 0.5-2 mm. When the thickness of the edge beam is greater than or equal to 0.5 mm, the edge beam has sufficient strength, reducing the risk of damage to the edge beam when subjected to external force; when the thickness of the edge beam is less than or equal to 2 mm, the mass of the edge beam is reduced, thereby reducing the mass of the battery device and improving the mass-energy density of the battery device; therefore, when the thickness of the edge beam is 0.5-2 mm, the strength of the edge beam and the mass-energy density of the battery device can be considered.

[0018] In some embodiments, along the height direction of the first edge beam, the mounting piece is provided with a first through hole penetrating the mounting piece along the height direction of the first edge beam; the reinforcing piece is provided with a second through hole penetrating the reinforcing piece along the height direction of the first edge beam, and the first through hole and the second through hole are in communication. In this way, the communication of the first through hole and the second through hole facilitates the assembly of the mounting piece and the external equipment, and reduces the installation difficulty of the external equipment and the mounting piece.

[0019] In some embodiments, along the height direction of the edge beam, the frame has a first opening portion in communication with the accommodation space, and at least one edge beam is provided with a first flange portion at one end close to the first opening portion; the battery device further comprises a first cover body covering the first opening portion and connected with the first flange portion. In this way, the first flange portion can increase the contact area between the first flange portion and the first cover body, improve the connection strength between the first flange portion and the first cover body, and improve the connection stability between the first cover body and the edge beam, thereby improving the structural stability of the battery device.

[0020] In some embodiments, along the thickness direction of the edge beam, the first flange portion protrudes from the first surface. In this way, the size of the first opening portion can be reduced, and the influence of the first flange portion on the assembly of the battery monomer into the accommodation space can be reduced.

[0021] In some embodiments, the first flange portion protrudes from the first surface and the second surface along the thickness direction of the edge beam. In this way, the first flange portion can have a larger surface in contact with the first cover, thereby further improving the structural stability of the first cover and the first flange portion.

[0022] In some embodiments, the first flange portion protrudes from the first surface and the second surface along the thickness direction of the edge beam. In this way, the first flange portion can have a larger surface in contact with the first cover, thereby further improving the structural stability of the first cover and the first flange portion.

[0023] In some embodiments, the frame has a second opening portion in communication with the accommodating space along the height direction of the edge beam, the first opening portion and the second opening portion are located at opposite ends of the frame along the height direction of the edge beam, and the at least one edge beam is provided with a second flange portion near one end of the second opening portion. The battery device further comprises a second cover, which covers the second opening portion and is connected to the second flange portion. In this way, the second flange portion can increase the contact area with the second cover, improve the connection strength between the second flange portion and the second cover, and improve the connection stability between the second cover and the edge beam, thereby improving the structural stability of the battery device.

[0024] In some embodiments, the second flange portion protrudes from the first surface and / or the second surface along the thickness direction of the edge beam. In this way, the second flange portion can have a larger surface in contact with the second cover, thereby further improving the structural stability of the second cover and the second flange portion.

[0025] In a second aspect, the embodiments of the present application provide a power consumption device, which comprises the battery device provided in any one of the embodiments of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0027] Figure 1 The structural schematic diagram of a vehicle is provided for some embodiments of the present application;

[0028] Figure 2 The exploded view of a battery device is provided for some embodiments of the present application;

[0029] Figure 3 The exploded view of a battery monomer is provided for some embodiments of the present application;

[0030] Figure 4 Structure diagram of a battery device provided for some embodiments of the present application;

[0031] Figure 5 Structure diagram of a side beam provided for some embodiments of the present application;

[0032] Figure 6 A-A sectional view of Figure 5

[0033] Figure 7 Structure diagram of a frame provided for some embodiments of the present application;

[0034] Figure 8 B-B sectional view of Figure 7

[0035] Assembly diagram of a mounting member and a reinforcing member provided for some embodiments of the present application; Figure 9

[0036] Assembly diagram of a mounting member and a reinforcing member provided for some embodiments of the present application; Figure 10

[0037] Structure diagram of a battery device provided for some embodiments of the present application; Figure 11

[0038] Exploded view of a battery device provided for some embodiments of the present application; Figure 12

[0039] Structure diagram of a frame provided for some embodiments of the present application. Figure 13 Figure legend: 1-frame; 11a-side beam; 11-first side beam; 111-first surface; 112-second surface; 12-accommodation space; 13-first port; 14-first flange portion; 15-second port; 16-second flange portion; 2-mounting member; 21-first through hole;

[0040] 3-groove; 31-first groove wall surface; 32-second groove wall surface; 33-third groove wall surface; 34-fourth groove wall surface; 35-opening;

[0041] 4-battery cell; 41-casing; 411-casing body; 412-end cover; 42-electrode assembly; 43-electrode terminal;

[0042] 5-reinforcing member; 51-cavity; 52-second through hole; 6-first cover; 7-second cover;

[0043]

[0044] ​​10: battery device; 101: case; 20: controller; 30: motor; 100: electric device; X: extension direction of the first side beam; Y: thickness direction of the first side beam; Z: height direction of the first side beam. DETAILED DESCRIPTION

[0045] 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 described clearly 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, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0046] 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 present application 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. 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.

[0047] 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 appearance of this phrase 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.

[0048] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which 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.

[0049] In the embodiments of the present application, the same reference signs represent the same components, and for brevity, 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, as well as 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.

[0050] "Multiple" appearing in the present application means two or more (including two).

[0051] 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 to continue use.

[0052] The battery cell includes, but is not limited to, a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc.

[0053] In some embodiments, the battery cell can include a shell. The shell is used to package components such as the electrode assembly and the electrolyte. The shell 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.

[0054] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell, or a battery cell of other shapes, the prismatic battery cell includes a square cell, a blade cell, a multi-prismatic battery cell, such as a hexagonal prismatic battery cell, etc.

[0055] 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, in parallel, or in a mixed connection through a busbar component.

[0056] In some embodiments, the battery cell assembly is usually 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.

[0057] As an example, the battery module can be formed by bundling a plurality of battery cells with a cable tie.

[0058] In some embodiments, the battery apparatus can be a battery pack, which can include a box and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box.

[0059] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the box by fixing the battery module in the box.

[0060] 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.

[0061] As an example, the box can include a first box and a second box. The first box and the second box are fastened so that an inside of the box forms a closed space to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0062] As an example, the box can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are connected with the frame, respectively, so that an inside of the box forms a closed space to accommodate the battery cell assembly.

[0063] As an example, the box can be part of a chassis structure of a vehicle. For example, the top cover of the box can be at least part of a floor of the vehicle, or the frame of the box can be at least part of a cross beam and a longitudinal beam of the vehicle.

[0064] In the application process of the battery device, in order to realize the assembly of the battery device and the external equipment, a hanging piece can be arranged on the frame of the battery device, and the hanging piece is connected with the external equipment to realize the assembly of the battery device and the external equipment. For example, in the process of assembling the battery device to the vehicle, the hanging piece can be connected to the frame of the vehicle to hang the battery device at the bottom of the vehicle.

[0065] In order to reduce the influence of the hanging piece on the mass power density of the battery device, the hanging piece can generally be arranged as a hollow structure, which can reduce the use of materials of the hanging piece and reduce the mass of the hanging piece. However, the hanging piece is easy to be damaged when subjected to external force, and the structural strength of the hanging piece is low, so that the structural strength of the battery device is low, and the risk of damage to the battery device is increased.

[0066] 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, which includes a frame, a battery cell, and a reinforcing piece. The frame includes a plurality of side beams, the plurality of side beams are connected in sequence to form an accommodation space, the side beam has a first surface away from the accommodation space and a second surface facing the accommodation space, at least one side beam is provided with a hanging piece and a groove, the hanging piece is arranged on the first surface, and the groove is recessed from the second surface into the hanging piece. At least part of the battery cell is accommodated in the accommodation space. At least part of the reinforcing piece is accommodated in the groove, and the reinforcing piece is used to strengthen the strength of the hanging piece.

[0067] In such a battery device, by accommodating at least part of the reinforcing piece in the groove, the reinforcing piece can strengthen the strength of the hanging piece, reduce the risk of damage to the hanging piece when bearing the battery device, and improve the structural strength of the battery device, thereby improving the structural stability of the battery device.

[0068] 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.

[0069] The following embodiments are described by taking the electric device as a vehicle for example for convenience of description.

[0070] Please refer to Figure 1 , Figure 1 The structural schematic diagram of the vehicle is provided for some embodiments of the present application. The vehicle is internally provided with the battery device 10, which can be arranged at the bottom, head or tail of the vehicle. The battery device 10 can be used for power supply of the vehicle, for example, the battery device 10 can be used as the operating power supply of the vehicle.

[0071] The vehicle can further include a controller 20 and a motor 30, the controller 20 being used to control the battery device 10 to supply power to the motor 30, for example, for the working power demand of the vehicle during starting, navigation and driving.

[0072] In some embodiments of the present application, the battery device 10 can not only be used as the operating power supply of the vehicle, but also be used as the driving power supply of the vehicle, instead of or partially instead of the fuel or natural gas to provide driving power for the vehicle.

[0073] 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 4, the box body 101 being used to accommodate the battery cell 4.

[0074] The box body 101 is internally formed with a closed space for accommodating the battery cell 4. The box body 101 can adopt various structures. In some embodiments, the box body 101 can include a first cover 6, a frame 1 and a second cover 7, the frame 1 being a hollow structure with two open sides, the first cover 6 and the second cover 7 being 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, the plurality of side beams 11a being sequentially connected in a ring shape to be arranged around the outer periphery of the battery cell 4.

[0075] In the battery device 10, the battery cell 4 can be one or multiple. If the battery cell 4 is multiple, the multiple battery cells 4 can be connected in series, in parallel or in a mixed manner. The mixed manner means that the multiple battery cells 4 are connected in series and in parallel. The multiple battery cells 4 can be connected in series, in parallel or in a mixed manner to form a battery module, and the multiple battery modules can be connected in series, in parallel or in a mixed manner to form a whole, and the whole can be accommodated in the box 101. Alternatively, the multiple battery cells 4 can be directly connected in series, in parallel or in a mixed manner, and the whole formed by the multiple battery cells 4 can be accommodated in the box 101.

[0076] Please refer to Figure 3 , Figure 3 The battery cell 4 provided in some embodiments of the present application is shown in an exploded view. The battery cell 4 can include a housing 41 and an electrode assembly 42, and the electrode assembly 42 is accommodated in the housing 41.

[0077] In some embodiments, the housing 41 can include a shell 411 and an end cover 412, the shell 411 has an opening 35, and the end cover 412 closes the opening 35 of the shell 411. Here, closing means covering or closing, which can be sealed or unsealed.

[0078] The shell 411 is a component for accommodating the electrode assembly 42, and the shell 411 can be a hollow structure with an opening 35 at one end or at opposite ends. The shell 411 can have various shapes, such as a cylindrical shape, a cuboid shape, etc. The shell 411 can be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, etc. The electrode assembly 42 can be partially located in the shell 411 or entirely located in the shell 411.

[0079] The end cover 412 cooperates with the shell 411 to define a receiving space for accommodating the electrode assembly 42 and other components. The end cover 412 can be connected to the shell 411 by welding, crimping or the like to close the opening 35 of the shell 411. The shape of the end cover 412 can be adapted to the shape of the shell 411, such as a rectangular plate structure adapted to the cuboid structure of the shell 411, or a circular plate structure adapted to the cylindrical structure of the shell 411. The end cover 412 can be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, etc. The material of the end cover 412 can be the same as or different from that of the shell 411.

[0080] In the embodiment in which the shell 411 has an opening 35 at one end, one end cover 412 can be provided. In the embodiment in which the shell 411 has openings 35 at opposite ends, two end covers 412 can be provided, and the two end covers 412 close the two openings 35 of the shell 411, respectively, and the two end covers 412 cooperates with the shell 411 to define a receiving space.

[0081] In some embodiments, the battery cell 4 can further include an electrode terminal 43 disposed on the shell 41, the electrode terminal 43 being electrically connected with the tab of the electrode assembly 42 to input or output the electric energy of the battery cell 4. The electrode terminal 43 can be disposed on the housing 411 of the shell 41 or on the end cover 412 of the shell 41. The electrode terminal 43 can be directly connected with the tab, for example, the electrode terminal 43 is welded with the tab. The electrode terminal 43 can also be indirectly connected with the tab, for example, the electrode terminal 43 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.

[0082] Please refer to Figures 4-6 , Figure 4 a structural schematic diagram of a battery device 10 provided by some embodiments of the present application; Figure 5 a structural schematic diagram of a side beam 11a provided by some embodiments of the present application; Figure 6 a structural schematic diagram of a side beam 11a provided by some embodiments of the present application; Figure 5 A-A cross-sectional view. The embodiments of the present application provide a battery device 10, which includes a frame 1, a battery cell 4 and a reinforcing member 5; the frame 1 includes a plurality of side beams 11a, the plurality of side beams 11a are sequentially connected in a head-to-tail manner to form a containing space 12, the plurality of side beams 11a include a first side beam 11, the first side beam 11 has a first surface 111 facing away from the containing space 12 and a second surface 112 facing the containing space 12, the first side beam 11 is provided with a mounting member 2 and a groove 3, the mounting member 2 is disposed on the first surface 111, and the groove 3 is recessed from the second surface 112 into the mounting member 2; at least part of the battery cell 4 is contained in the containing space 12; at least part of the reinforcing member 5 is contained in the groove 3, and the reinforcing member 5 is used to reinforce the strength of the mounting member 2.

[0083] The frame 1 can include a plurality of side beams 11a, the plurality of side beams 11a are sequentially connected in a head-to-tail manner along the extension direction of the side beams 11a to form a ring shape, so as to form the containing space 12, at least part of the battery cell 4 is contained in the containing space 12, so that the frame 1 is arranged around the battery cell 4, and the side beams 11a of the frame 1 can be three, four, five, six, seven, eight, nine, ten or the like; for example, four side beams 11a are sequentially connected in a head-to-tail manner along the extension direction of the side beams 11a to form the containing space 12. The two adjacent side beams 11a can be connected by clamping, bonding, welding or the like.

[0084] The side beam 11a can be only the first side beam 11, and the first side beam 11 is provided with the mounting member 2. Alternatively, all the side beams 11a can be the first side beam 11, and each of the first side beams 11 is provided with the mounting member 2. Alternatively, only a part of the plurality of side beams 11a can be the first side beam 11, for example, the frame 1 has two oppositely arranged side beams 11a, and the two side beams 11a are both provided with the mounting member 2.

[0085] The number of the mounting member 2 on the first side beam 11 can be one or multiple.

[0086] The first surface 111 and the second surface 112 are two surfaces of the first side beam 11 opposite along the thickness direction of the first side beam 11. The first surface 111 is a surface of the frame 1 facing away from the battery monomer 4, and the second surface 112 is a surface of the frame 1 facing the battery monomer 4. The mounting member 2 is arranged on the first surface 111 and protrudes from the first surface 111. The groove 3 has a slot, and the slot of the groove 3 is located on the second surface 112, and the groove 3 extends into the mounting member 2.

[0087] The mounting member 2 can be integrally formed with the first side beam 11; for example, the mounting member 2 and the first side beam 11 are integrally formed by stamping. The mounting member 2 can also be connected to the first side beam 11; for example, the mounting member 2 and the first side beam 11 are connected by welding.

[0088] In the height direction Z of the first side beam, the frame 1 has a first opening 13 and a second opening 15 at two ends respectively, and the accommodation space 12 is located between the first opening 13 and the second opening 15. The battery monomer 4 can be entirely accommodated in the accommodation space 12; or a part of the battery monomer 4 is located in the accommodation space 12, and the other part is located outside the accommodation space 12 and beyond the first opening 13 or the second opening 15.

[0089] The reinforcing member 5 can be entirely accommodated in the groove 3, or a part of the reinforcing member 5 is accommodated in the groove 3, and the other part is located outside the groove 3 and beyond the second surface 112.

[0090] The reinforcing member 5 can abut between two oppositely arranged groove wall surfaces of the groove 3 to limit the position of the reinforcing member 5 in the groove 3; or the reinforcing member 5 can be fixed to a surface of the groove 3, for example, the reinforcing member 5 is adhered to the surface of the groove 3.

[0091] In the embodiments of the present application, by arranging the mounting member 2 on the first surface 111 of the first side beam 11, the battery device 10 can be connected to an external device through the mounting member 2 to realize the assembly of the battery device 10 and the external device. By arranging the groove 3 to recess from the second surface 112 into the mounting member 2, the manufacturing difficulty of the mounting member 2 can be reduced, the use of materials of the mounting member 2 can be reduced, and the manufacturing cost of the mounting member 2 can be reduced. By arranging the groove 3, the reinforcing member 5 can be accommodated in the mounting member 2 through the groove 3, the installation difficulty of the reinforcing member 5 is reduced, and by accommodating at least part of the reinforcing member 5 in the groove 3, the reinforcing member 5 can strengthen the strength of the mounting member 2, reduce the risk of damage to the mounting member 2 when bearing the battery device 10, and improve the structural strength of the battery device 10, thereby improving the structural stability of the battery device 10.

[0092] In some embodiments, please refer to Figure 7 and Figure 8 , Figure 7 the schematic diagram of the frame 1 provided by some embodiments of the present application; Figure 8 is Figure 7 the B-B sectional view. Along the height direction Z of the first edge beam, the groove 3 has oppositely arranged first groove wall surface 31 and second groove wall surface 32, and the reinforcing member 5 abuts against the first groove wall surface 31 and the second groove wall surface 32.

[0093] Along the height direction Z of the first edge beam, the first groove wall surface 31 and the second groove wall surface 32 are respectively located on both sides of the reinforcing member 5.

[0094] The reinforcing member 5 abuts against the first groove wall surface 31 and the second groove wall surface 32, and along the height direction Z of the first edge beam, the reinforcing member 5 supports the first groove wall surface 31 and the second groove wall surface 32. When the hanging member 2 is extruded along the height direction Z of the first edge beam under external pressure, the reinforcing member 5 can reduce the deformation amount of the groove 3.

[0095] By arranging the reinforcing member 5 to abut against the first groove wall surface 31 and the second groove wall surface 32 along the height direction Z of the first edge beam, the reinforcing member 5 can enhance the structural strength of the hanging member 2 along the height direction Z of the first edge beam, and reduce the risk of the hanging member 2 being damaged by external force.

[0096] In some embodiments, please refer to Figure 9 , Figure 9 the assembly view of the hanging member 2 and the reinforcing member 5 provided by some embodiments of the present application. Along the extension direction X of the first edge beam, the groove 3 has oppositely arranged third groove wall surface 33 and fourth groove wall surface 34, and the reinforcing member 5 abuts against the third groove wall surface 33 and the fourth groove wall surface 34.

[0097] The groove wall surface of the groove 3 can be four, five, six, seven, eight, etc. Along the height direction Z of the first edge beam, the first groove wall surface 31 and the second groove wall surface 32 are oppositely arranged on both sides of the reinforcing member 5; along the extension direction X of the first edge beam, the third groove wall surface 33 and the fourth groove wall surface 34 are oppositely arranged on both sides of the reinforcing member 5. The first groove wall surface 31, the second groove wall surface 32, the third groove wall surface 33 and the fourth groove wall surface 34 all abut against the reinforcing member 5, which on the one hand fixes the position of the reinforcing member 5, and on the other hand enhances the strength of the hanging member 2.

[0098] By arranging the reinforcing member 5 to abut against the third groove wall surface 33 and the fourth groove wall surface 34 along the extension direction X of the first edge beam, on the one hand, the position of the reinforcing member 5 in the groove 3 is more stable, so that the position of the reinforcing member 5 is more stable when the hanging member 2 is stressed; on the other hand, the structural strength of the hanging member 2 can be further improved, and the risk of the hanging member 2 being damaged by external force can be reduced.

[0099] In some embodiments, please refer to Figure 10 , Figure 10 The assembly drawing of the mounting member 2 and the reinforcing member 5 is provided in some embodiments of the present application. The reinforcing member 5 is internally provided with a cavity 51.

[0100] The cavity 51 can be isolated from the outside of the reinforcing member 5, and the cavity 51 is entirely located inside the reinforcing member 5; or the cavity 51 can be in communication with the outside. In some embodiments, the mounting member 2 and the reinforcing member 5 are both provided with mounting holes, the mounting holes penetrate the mounting member 2 and the reinforcing member 5 along the height direction Z of the first side beam, and the mounting holes on the reinforcing member 5 are the cavity 51.

[0101] In the present embodiment, on the one hand, the material use of the reinforcing member 5 can be reduced, and the material cost of the reinforcing member 5 can be reduced; on the other hand, the mass of the reinforcing member 5 can be reduced, and thus the mass of the battery device 10 can be reduced, and the load requirement of the mounting member 2 can be reduced.

[0102] In some embodiments, please refer to Figure 6 . The groove 3 is formed with an opening 35 on the second surface 112, and the cavity 51 extends to one end of the reinforcing member 5 facing the opening 35.

[0103] The reinforcing member 5 can be installed in the groove 3 through the opening 35. The cavity 51 extends to one end of the reinforcing member 5 facing the opening 35, so that the cavity 51 is in communication with the accommodation space 12.

[0104] In the present embodiment, on the one hand, the material use of the reinforcing member 5 can be further reduced; on the other hand, it is beneficial to identify the extension direction of the cavity 51, and the risk of incorrect installation of the reinforcing member 5 can be reduced.

[0105] In some embodiments, the reinforcing member 5 fills the groove 3.

[0106] The reinforcing member 5 fills the entire groove 3. The reinforcing member 5 can be entirely located in the groove 3; or part of the reinforcing member 5 can be located outside the groove 3.

[0107] In some embodiments, the material cost of the reinforcing member 5 can be lower than that of the mounting member 2, the reinforcing member 5 can enhance the strength of the mounting member 2, and the manufacturing cost of the mounting member 2 can be reduced; or the material density of the reinforcing member 5 can be lower than that of the mounting member 2, the reinforcing member 5 can enhance the strength of the mounting member 2, and the mass of the mounting member 2 can be reduced.

[0108] In the present embodiment, the reinforcing member 5 fills the groove 3. The strength of the mounting member 2 can be improved, the risk of the mounting member 2 being recessed into the groove 3 when subjected to external force can be reduced, and the structural stability of the mounting member 2 can be improved.

[0109] In some embodiments, please refer to Figure 6The first surface 111 is arranged opposite to the second surface 112 along the thickness direction Y of the first side beam. The two ends of the reinforcing member 5 are respectively located on the two sides of the first surface 111 along the thickness direction Y of the first side beam.

[0110] In the projection plane perpendicular to the height direction Z of the first side beam, a part of the projection of the reinforcing member 5 and a part of the projection of the hanging member 2 overlap, and another part of the projection of the reinforcing member 5 and a part of the projection of the first side beam 11 overlap.

[0111] In the embodiment, the reinforcing member 5 can enhance the connection strength between the hanging member 2 and the first side beam 11, reduce the risk of fracture of the connection position between the hanging member 2 and the first side beam 11, improve the structural strength of the frame 1, and thus improve the structural stability of the battery device 10.

[0112] In some embodiments, the reinforcing member 5 is entirely located in the groove 3.

[0113] The groove 3 is formed with an opening 35 on the second surface 112, and the reinforcing member 5 is located on the side of the opening 35 away from the battery cell 4.

[0114] In the embodiment, the reinforcing member 5 being entirely located in the groove 3 can reduce the influence of the reinforcing member 5 on the accommodation space 12, and thus reduce the risk of the battery cell 4 being damaged due to the contact of the reinforcing member 5 with the battery cell 4.

[0115] In some embodiments, the reinforcing member 5 exceeds the second surface 112 in the direction from the first surface 111 to the second surface 112.

[0116] The reinforcing member 5 exceeds the second surface 112, so that the projection of the reinforcing member 5 at least partially overlaps the projection of the first side beam 11 in the direction perpendicular to the thickness direction Y of the first side beam 11. When the hanging member 2 and the frame 1 have a shearing force, the part of the reinforcing member 5 exceeding the second surface 112 can reduce the risk of the hanging member 2 being separated from the first side beam 11, and when the reinforcing member 5 abuts against the opening 35 of the groove 3, the reinforcing member 5 can enhance the resistance to deformation between the hanging member 2 and the frame 1.

[0117] In the embodiment, the reinforcing member 5 can improve the strength of the connection position between the hanging member 2 and the first side beam 11, reduce the risk of the hanging member 2 being separated from the first side beam 11, and improve the structural stability of the frame 1.

[0118] In some embodiments, the hanging member 2 is integrally formed with the first side beam 11.

[0119] The mounting piece 2 and the first edge beam 11 can be formed by stamping or casting. In an example, the first edge beam 11 is made of sheet metal, and the sheet metal is stamped in a direction from the second surface 112 to the first surface 111 to form the recess 3 on the second surface 112 and the mounting piece 2 on the first surface 111 corresponding to the recess 3.

[0120] In the embodiment, the mounting piece 2 is formed integrally with the first edge beam 11, which improves the connection strength between the mounting piece 2 and the edge beam 11a and makes the connection more stable. In addition, the recess 3 is formed on the second surface 112 and the mounting piece 2 is formed on the first surface 111 corresponding to the recess 3, which reduces the processing difficulty and cost of the mounting piece 2 and thus the processing cost of the battery device 10.

[0121] In some embodiments, the reinforcing member 5 is made of glass fiber, carbon fiber, ceramic, steel, aluminum or aluminum alloy.

[0122] The reinforcing member 5 can be a filler filled in the recess 3, for example, the reinforcing member 5 is pressed into a block shape by a ceramic particle material to form the reinforcing member 5. Alternatively, the reinforcing member 5 is a structural member supported on the groove wall surface of the recess 3, for example, the reinforcing member 5 is a square tube and the recess 3 is a cuboid, and the reinforcing member 5 is adapted to the shape of the recess 3.

[0123] In the embodiment, the reinforcing member 5 has high strength, which is conducive to improving the structural strength and stability of the mounting piece 2.

[0124] In some embodiments, please continue to refer to Figure 5 . The mounting piece 2 is a plurality of mounting pieces 2 arranged at intervals along the extension direction X of the first edge beam.

[0125] The mounting piece 2 can be two, three, four, five, six or the like.

[0126] In the embodiment, each mounting piece 2 can share the weight of the battery device 10, which reduces the risk of damage to the mounting piece 2 and improves the structural stability of the battery device 10.

[0127] In some embodiments, the thickness of the edge beam 11a is 0.5-2 mm.

[0128] The edge beam 11a can be the first edge beam 11 or an edge beam 11a without the mounting piece 2.

[0129] The thickness of the side beam 11a can be any one of 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm or a range between any two of them.

[0130] When the thickness of the side beam 11a is greater than or equal to 0.5 mm, the side beam 11a can have sufficient strength, reducing the risk of the side beam 11a being damaged when subjected to external force; when the thickness of the side beam 11a is less than or equal to 2 mm, the mass of the side beam 11a can be reduced, thereby reducing the mass of the battery device 10 and improving the mass-energy density of the battery device 10; therefore, when the thickness of the side beam 11a is 0.5 mm-2 mm, the strength of the side beam 11a and the mass-energy density of the battery device 10 can be considered.

[0131] In some embodiments, please continue to refer to Figure 5 and Figure 6 . Along the height direction Z of the first side beam, the mounting member 2 is provided with a first through hole 21, and the first through hole 21 penetrates the mounting member 2 along the height direction Z of the first side beam. The reinforcing member 5 is provided with a second through hole 52, and the second through hole 52 penetrates the reinforcing member 5 along the height direction Z of the first side beam, and the first through hole 21 and the second through hole 52 are in communication.

[0132] The first through hole 21 and the second through hole 52 both extend along the height direction Z of the first side beam. The first through hole 21 can be a straight hole or a threaded hole; the second through hole 52 can be a straight hole or a threaded hole. By passing a locking accessory of an external device through the first through hole 21 and the second through hole 52, the locking accessory can connect the mounting member 2 and the external device. For example, to fix the battery device 10 to the frame of a vehicle, the frame has a mounting hole, the first through hole 21 and the second through hole 52 are threaded holes, and a bolt passes through the mounting hole of the frame and is connected to the first through hole 21 and the second through hole 52.

[0133] In embodiments in which the mounting member 2 and the reinforcing member 5 are both provided with mounting holes, the mounting holes of the mounting member 2 and the reinforcing member 5 are the first through hole 21 and the second through hole 52, respectively.

[0134] In this embodiment, the first through hole 21 and the second through hole 52 facilitate the assembly of the mounting member 2 and the external device, reducing the difficulty of installing the external device and the mounting member 2.

[0135] In some embodiments, please refer to Figures 11-13 , Figure 11 a structural schematic diagram of the battery device 10 provided by some embodiments of the present application; Figure 12 a perspective view of the battery device 10 provided by some embodiments of the present application; Figure 13A structural schematic diagram of the frame 1 is provided for some embodiments of the present application. Along the height direction of the edge beam 11a, the frame 1 has a first opening 13 communicating with the accommodating space 12, and at least one edge beam 11a is provided with a first flange portion 14 at one end close to the first opening 13. The battery device 10 further comprises a first cover body 6, which covers the first opening 13 and is connected with the first flange portion 14.

[0136] The first flange portion 14 can be provided on only one edge beam 11a, or can be provided on multiple edge beams 11a. The edge beam 11a provided with the first flange portion 14 can be the first edge beam 11, or can be an edge beam 11a without the mounting member 2.

[0137] The first flange portion 14 is connected to the edge beam 11a, and can extend to the side away from the battery monomer 4, or can extend to the side facing the battery monomer 4. The first cover body 6 can be welded to the first flange portion 14, or the first cover body 6 and the first flange portion 14 can be detachably connected, for example, by bolt locking.

[0138] In the present embodiment, the first flange portion 14 can increase the contact area with the first cover body 6, improve the connection strength between the first flange portion 14 and the first cover body 6, and improve the connection stability between the first cover body 6 and the edge beam 11a, thereby improving the structural stability of the battery device 10.

[0139] In some embodiments, along the thickness direction of the edge beam 11a, the first flange portion 14 protrudes from the first surface 111 and protrudes from the second surface 112.

[0140] In the present embodiment, the influence of the first flange portion 14 on the size of the first opening 13 can be reduced, thereby reducing the influence of the first flange portion 14 on the assembly of the battery monomer 4 into the accommodating space 12.

[0141] In some embodiments, along the thickness direction of the edge beam 11a, the first flange portion 14 protrudes from the second surface 112.

[0142] In the present embodiment, the first flange portion 14 can have a larger surface in contact with the first cover body 6, thereby improving the structural stability of the first cover body 6 and the first flange portion 14.

[0143] In some embodiments, along the thickness direction of the edge beam 11a, the first flange portion 14 protrudes from the first surface 111; and the first flange portion 14 protrudes from the second surface 112.

[0144] In the present embodiment, the first flange portion 14 can have a larger surface in contact with the first cover body 6, thereby further improving the structural stability of the first cover body 6 and the first flange portion 14.

[0145] In some embodiments, please continue to refer to Figures 11-13 . Along the height direction of the edge beam 11a, the frame 1 has a second opening 15 which communicates with the accommodating space 12, the first opening 13 and the second opening 15 are located at opposite ends of the frame 1 along the height direction of the edge beam 11a, and at least one edge beam 11a is provided with a second flange portion 16 at one end close to the second opening 15; the battery device 10 further comprises a second cover body 7, the second cover body 7 covers the second opening 15 and is connected with the second flange portion 16.

[0146] The second flange portion 16 can be provided on only one edge beam 11a, or can be provided on multiple edge beams 11a. The edge beam 11a provided with the second flange portion 16 can be the first edge beam 11, or can be an edge beam 11a without the mounting member 2.

[0147] The second flange portion 16 is connected to the edge beam 11a, and the second flange portion 16 can extend to the side away from the battery monomer 4 or extend to the side facing the battery monomer 4. The second cover body 7 can be welded to the second flange portion 16; or the second cover body 7 and the second flange portion 16 can be detachably connected, for example, the second cover body 7 and the second flange portion 16 are connected by bolts.

[0148] The first cover body 6, the frame 1 and the second cover body 7 form a box body 101 of the battery device 10, which can be that the first cover body 6 is a first box body 101, and the second cover body 7 and the frame 1 are a second box body 101; or the first cover body 6 and the frame 1 are a first box body 101, and the second cover body 7 is a second box body 101; or the first cover body 6 and part of the plurality of edge beams 11a are a first box body 101, and the second cover body 7 and another part of the plurality of edge beams 11a are a second box body 101.

[0149] In the present embodiment, the second flange portion 16 can increase the contact area with the second cover body 7, improve the connection strength between the second flange portion 16 and the second cover body 7, and improve the connection stability between the second cover body 7 and the edge beam 11a, thereby improving the structural stability of the battery device 10.

[0150] In some embodiments, along the thickness direction of the edge beam 11a, the second flange portion 16 protrudes from the first surface 111.

[0151] In some embodiments, along the thickness direction of the edge beam 11a, the second flange portion 16 protrudes from the second surface 112.

[0152] In the present embodiment, the second flange portion 16 can have a larger surface in contact with the second cover body 7, thereby improving the structural stability of the second cover body 7 and the second flange portion 16. In some embodiments, along the thickness direction of the edge beam 11a, the second flange portion 16 protrudes from the first surface 111.

[0151] In some embodiments, along the thickness direction of the edge beam 11a, the second flange portion 16 protrudes from the second surface 112.

[0152] In the present embodiment, the second flange portion 16 can have a larger surface in contact with the second cover body 7, thereby improving the structural stability of the second cover body 7 and the second flange portion 16. In some embodiments, along the thickness direction of the edge beam 11a, the second flange portion 16 protrudes from the first surface 111.

[0151] In some embodiments, along the thickness direction of the edge beam 11a, the second flange portion 16 protrudes from the second surface 112.

[0152] In the present embodiment, the second flange portion 16 can have a larger surface in contact with the second cover body 7, thereby improving the structural stability of the second cover body 7 and the second flange portion 16.

[0153] In some embodiments, the second flange portion 16 protrudes from the first surface 111 in the thickness direction of the edge beam 11a; and the second flange portion 16 protrudes from the second surface 112.

[0154] In the present embodiment, the second flange portion 16 can have a larger surface in contact with the second cover 7, thereby further improving the structural stability of the second cover 7 and the second flange portion 16.

[0155] The embodiments of the present application provide a battery device 10.

[0156] Please continue to refer to Figure 5 , Figure 6 , Figure 12 and Figure 13 . The embodiments of the present application provide a battery device 10, comprising a frame 1, a battery cell 4 and a reinforcing member 5; the frame 1 comprises a plurality of edge beams 11a, the plurality of edge beams 11a are sequentially connected head to tail to form an accommodation space 12, the edge beam 11a has a first surface 111 facing away from the accommodation space 12 and a second surface 112 facing the accommodation space 12, at least one edge beam 11a is provided with a mounting member 2 and a groove 3, the mounting member 2 is arranged on the first surface 111, and the groove 3 is recessed from the second surface 112 into the mounting member 2; at least part of the battery cell 4 is accommodated in the accommodation space 12; the reinforcing member 5 is accommodated in the groove 3. The groove 3 has a first groove wall surface 31 and a second groove wall surface 32 arranged oppositely along the height direction Z of the first edge beam, and a third groove wall surface 33 and a fourth groove wall surface 34 arranged oppositely along the extension direction X of the first edge beam, the first groove wall surface 31, the second groove wall surface 32, the third groove wall surface 33 and the fourth groove wall surface 34 all abut against the reinforcing member 5, the reinforcing member 5 is internally provided with a cavity 51, and the cavity 51 extends to one end of the reinforcing member 5 facing the opening 35. The mounting member 2 is a plurality of, the mounting members 2 are arranged at intervals along the extension direction X of the first edge beam, and the mounting members 2 correspond one by one to the grooves 3. The mounting member 2 is integrally formed with the edge beam 11a.

[0157] By arranging the mounting piece 2 on the first surface 111 of the side beam 11a, the battery device 10 can be connected with external equipment through the mounting piece 2 to realize the assembly of the battery device 10 and the external equipment. By arranging the groove 3 recessed from the second surface 112 into the mounting piece 2, the manufacturing difficulty of the mounting piece 2 can be reduced, the material use of the mounting piece 2 can be reduced, and the manufacturing cost of the mounting piece 2 can be reduced. By arranging at least part of the reinforcing piece 5 in the groove 3, the reinforcing piece 5 can strengthen the strength of the mounting piece 2, reduce the risk of the mounting piece 2 being damaged when bearing the battery device 10, improve the structural strength of the battery device 10, and thus improve the structural stability of the battery device 10. By arranging the reinforcing piece 5 to abut the first groove wall surface 31 and the second groove wall surface 32 along the height direction Z of the first side beam, the reinforcing piece 5 can enhance the structural strength of the mounting piece 2 along the height direction Z of the first side beam, and reduce the risk of the mounting piece 2 being damaged by external force. By arranging the reinforcing piece 5 to abut the third groove wall surface 33 and the fourth groove wall surface 34 along the extension direction X of the first side beam, on the one hand, the position of the reinforcing piece 5 in the groove 3 can be more stable, so that the position of the reinforcing piece 5 is more stable when the mounting piece 2 is stressed; on the other hand, the structural strength of the mounting piece 2 can be further improved, and the risk of the mounting piece 2 being damaged by external force can be reduced. The mounting piece 2 is integrally formed with the side beam 11a, which improves the connection stability of the mounting piece 2 and the side beam 11a, and reduces the processing difficulty and the processing cost of the side beam 11a.

[0158] 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.

[0159] 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 principles 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 frame beams connected in sequence to form a receiving space, wherein the plurality of frame beams comprise a first frame beam having a first surface facing away from the receiving space and a second surface facing the receiving space, the first frame beam is provided with a mounting part and a groove, the mounting part is arranged on the first surface, and the groove is recessed from the second surface into the mounting part; a battery cell at least partially accommodated in the receiving space; and a reinforcing part at least partially accommodated in the groove, the reinforcing part being used to reinforce the strength of the mounting part.

2. The battery device of claim 1, wherein In the height direction of the first frame beam, the groove has oppositely arranged first and second groove wall surfaces, and the reinforcing part abuts against the first and second groove wall surfaces.

3. The battery device of claim 2, wherein In the extension direction of the first frame beam, the groove has oppositely arranged third and fourth groove wall surfaces, and the reinforcing part abuts against the third and fourth groove wall surfaces.

4. The battery device of claim 1, wherein The reinforcing part is internally provided with a cavity.

5. The battery device of claim 4, wherein The groove is provided with an opening at the second surface, and the cavity extends to one end of the reinforcing part facing the opening.

6. The battery device of claim 1, wherein The first surface and the second surface are oppositely arranged in the thickness direction of the first frame beam, and in the thickness direction of the first frame beam, the two ends of the reinforcing part are respectively located on the two sides of the first surface.

7. The battery device of claim 1, wherein The reinforcing part is entirely located in the groove.

8. The battery device of claim 1, wherein, In the direction of the first surface pointing to the second surface, the reinforcing part exceeds the second surface.

9. The battery device of claim 1, wherein The mounting part is integrally formed with the first frame beam.

10. The battery device of claim 1, wherein, The material of the reinforcing part is glass fiber, carbon fiber, ceramic, steel, aluminum or aluminum alloy.

11. The battery device of any one of claims 1-10, wherein, The first frame beam is provided with a plurality of mounting parts, and the plurality of mounting parts are arranged at intervals in the extension direction of the first frame beam.

12. The battery device of any one of claims 1-10, wherein, The thickness of the frame beam is 0.5-2 mm.

13. The battery device of any one of claims 1-10, wherein, The mounting part is provided with a first through hole penetrating the mounting part in the height direction of the first frame beam. The reinforcing part is provided with a second through hole penetrating the reinforcing part in the height direction of the first frame beam, and the first through hole and the second through hole are in communication.

14. The battery device of any one of claims 1-10, wherein, In the height direction of the frame beam, the frame has a first opening part in communication with the receiving space, and at least one frame beam is provided with a first flange part at one end close to the first opening part. The battery device further comprises a first cover body covering the first opening part and connected with the first flange part.

15. The battery device of claim 14, wherein, In the thickness direction of the frame beam, the first flange part protrudes from the first surface, and / or the first flange part protrudes from the second surface.

16. The battery device of claim 14, wherein, In the height direction of the frame beam, the frame has a second opening part in communication with the receiving space, the first opening part and the second opening part are located at opposite ends of the frame in the height direction of the frame beam, and at least one frame beam is provided with a second flange part at one end close to the second opening part. The battery device further comprises a second cover body covering the second opening part and connected with the second flange part.

17. The battery device of claim 16, wherein, The second flange portion protrudes from the first surface and / or the second surface in a thickness direction of the edge beam.

18. An electrical device, comprising: A battery device comprising the battery device according to any one of claims 1 to 17.

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