Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device. The battery device comprises a battery monomer and a box body, the box body comprises a plurality of frames, the plurality of frames enclose to form an accommodating cavity, the battery monomer is arranged in the accommodating cavity, at least one of the plurality of frames is a first side frame, and at least one of the plurality of frames is a second side frame; the first side frame intersects with the second side frame, the first side frame is a hollow profile beam, at least one end of the first side frame is provided with an opening, and one end of the second side frame is connected to the first side frame and blocks the opening. According to the box body, the opening in the end part of the first side frame is directly blocked through the end part of the second side frame without a blocking piece, and the arrangement of the blocking piece is omitted, so that the processing cost of the box body is reduced, and the processing flow is simplified.

Description

Technical Field

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

[0002] The battery device generally includes a box body and a battery cell disposed in the box body. The box body can be made by stamping or welding of multiple profiles. When the box body is formed by welding multiple profiles, the openings at the ends of the profiles need to be sealed by separate sealing pieces, resulting in high processing costs for the box body and complicated processing. Utility Model Content

[0003] In view of the above problems, the present application provides a battery device and an electrical device, which can eliminate the need for a blocking member, reduce the processing cost of the box, and simplify the processing process.

[0004] In order to solve the above-mentioned technical problems, a technical solution adopted in the present application is to provide a battery device, which includes: a battery cell; a box body, the box body includes multiple frames, and the multiple frames are enclosed to form a accommodating cavity, and the battery cell is arranged in the accommodating cavity, at least one of the multiple frames is a first side frame, and at least one is a second side frame; the first side frame intersects with the second side frame, the first side frame is a hollow profile beam, at least one end of the first side frame has an opening, and one end of the second side frame is connected to the first side frame and blocks the opening.

[0005] As described above, the opening at the end of the first side frame is directly blocked by the end of the second side frame without being blocked by a blocking member, thereby eliminating the setting of the blocking member, thereby reducing the processing cost of the box body and simplifying the processing process.

[0006] In a possible implementation, the second side frame includes a main body section and a blocking section located at at least one end of the main body section, and the blocking section is connected to the first side frame and blocks the opening.

[0007] As mentioned above, the main section of the second side frame is used to enclose with the first side frame to form a receiving cavity, and the blocking section of the second side frame blocks the opening at the end of the first side frame without the need for blocking by a blocking piece.

[0008] In a possible implementation, the main body segment and the blocking segment are integrally formed.

[0009] As mentioned above, the integrally formed second side frame has a higher structural strength, so as to improve the integrity and structural strength of the box body.

[0010] In a possible implementation manner, the shape of the opening is the same as the shape of the blocking segment.

[0011] As described above, the blocking section of the second side frame can completely block the opening at the end of the first side frame, thereby preventing the frame opening from being incompletely blocked, causing abnormal noise to be generated by the box during driving.

[0012] In a possible implementation manner, a guide portion is provided on the blocking section, and the guide portion is clamped and fixed in the opening.

[0013] As described above, the guide part plays a positioning role. When the guide part of the second side frame is inserted into the opening at the end of the first side frame, the first side frame and the second side frame are positioned. Before the first side frame and the second side frame are welded and fixed, it is not necessary to use a positioning fixture or other tools for positioning, thereby improving the accuracy of the positions of the first side frame and the second side frame and improving the structural accuracy of the box.

[0014] In a possible embodiment, the first side frame includes a frame wall and a mounting beam, at least one end of the mounting beam has an opening; the frame wall is connected to the main body section to enclose the accommodating cavity, and the mounting beam is connected to a side of the frame wall facing away from the accommodating cavity.

[0015] As mentioned above, the mounting beam of the box body is used to improve the strength of the box body, and can also be used to fix the battery device on the power-consuming device. The mounting piece also facilitates the fixing of the box body on the transport device during the production of the battery device, which is beneficial to the transportation of the box body.

[0016] In a possible implementation manner, the mounting beam and the frame wall are integrally formed.

[0017] As described above, the integral molding improves the integrity and structural strength of the first side frame, and the strength of the box body is higher.

[0018] In a possible implementation manner, the blocking segment is welded to the opening.

[0019] As mentioned above, welding fixation makes the box body more integrated, less prone to loosening, and does not require additional parts for fixation, which is beneficial to reducing the weight of the box body.

[0020] In a possible implementation manner, the frame wall and the second side frame are both single-layer profile beams, and the thickness of the single-layer profile beam is in a range of 1 mm to 6 mm.

[0021] As mentioned above, the single-layer profile beam can reduce the weight of the box body and reduce the processing cost. On the other hand, the box body of the single-layer profile beam is easy to manage the heat of the battery device and improve the performance of the battery device.

[0022] In a possible implementation, the second side frame further includes a flange, and the flange is provided on at least one side of the main body segment in the height direction of the accommodating cavity.

[0023] As described above, the structural strength of the second side frame of the single-layer profile beam is improved by flanging, thereby reducing the risk of damage to the box body.

[0024] In a possible implementation, two flanges are provided, and the two flanges are respectively provided on two sides of the main body section in the height direction of the accommodating cavity, and the two flanges are respectively provided on two surfaces of the main body section.

[0025] As mentioned above, the two flanges are arranged on both sides of the main section and are located on both sides of the main section. When the main section is squeezed at different angles, it can be supported by the flanges, and the flanges can better strengthen the structural strength of the second side frame.

[0026] In order to solve the above technical problem, another technical solution adopted by the present application is to provide an electrical device, which includes a battery device, and the battery device is the above-mentioned battery device, and the battery device is used to provide electrical energy.

[0027] In the above-mentioned electrical device, the opening at the end of the first side frame on the box body is directly blocked by the end of the second side frame, and does not need to be blocked by a blocking piece, thereby eliminating the setting of the blocking piece, thereby reducing the processing cost of the box body and simplifying the processing process.

[0028] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments;

[0031] Figure 2 is a schematic structural diagram of a box in a battery box according to some embodiments;

[0032] Figure 3 for Figure 2 Exploded diagram of part of the box structure;

[0033] Figure 4 is a schematic structural diagram of a battery cell in a battery device according to some embodiments;

[0034] Figure 5 for Figure 2 A schematic diagram of the structure of the second side frame in the box;

[0035] Figure 6 Schematic diagram of the cross-sectional structure of the second side frame according to some embodiments.

[0036] Among them, 1000, vehicle; 200, controller; 300, motor; 100, battery device; 110, box; 120, battery cell; 10, frame; 11, first side frame; 12, second side frame; 121, main section; 122, blocking section; 20, opening; 111, frame wall; 112, mounting beam; 30, cross beam; 31, beam wall; 32, folded edge; 40, flange; 50, accommodating cavity; z, height direction. DETAILED DESCRIPTION

[0037] The following is a detailed description of the embodiments of the technical solution of the present application. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, unless otherwise clearly and specifically defined, the term "multiple" refers to more than two (including two), similarly, "multiple groups" refers to more than two (including two), and "multiple pieces" refers to more than two (including two).

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] At present, from the perspective of market development, batteries are being used more and more widely. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application areas, the market demand is also constantly expanding.

[0045] The battery device generally includes a box body and a plurality of battery cells disposed in the box body. The box body can be made by stamping or welding of multiple profiles. When the box body is formed by welding multiple profiles, the openings at the ends of the profiles need to be sealed by separate sealing pieces, resulting in high processing costs for the box body and complicated processing.

[0046] Based on the above considerations, in order to solve the technical problems in the prior art that the opening at the end of the box profile needs to be blocked by a separate blocking piece, the processing cost of the box is high, and the processing is complicated, the present application proposes a box, a battery device, and an electric device, in which the opening at the end of the first side frame of the box is directly blocked by the end of the second side frame, so that the box does not need to block the opening by a blocking piece.

[0047] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0048] Please refer to Figure 1 , Figure 1 is a schematic diagram of the structure of a vehicle according to one or more embodiments.

[0049] The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0050] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0051] In order to improve the performance of the electrical device, the present application provides a battery device, see Figures 2 to 4 , Figure 2 is a schematic structural diagram of a box in a battery box according to some embodiments; Figure 3 for Figure 2 Exploded diagram of part of the box structure; Figure 4 FIG. 4 is a schematic diagram of the structure of a battery cell in a battery device according to some embodiments.

[0052] In some embodiments, the battery device 100 includes a battery cell 120 and a box body 110, the box body 110 includes a plurality of frames 10, the plurality of frames 10 enclose a receiving cavity 50, the battery cell 120 is disposed in the receiving cavity 50, at least one of the plurality of frames 10 is a first side frame 11, and at least one is a second side frame 12; the first side frame 11 intersects with the second side frame 12, the first side frame 11 is a hollow profile beam, at least one end of the first side frame 11 has an opening 20, and one end of the second side frame 12 is connected to the first side frame 11 and blocks the opening 20.

[0053] In the present embodiment, there are four frames 10, and the four frames 10 are connected end to end to enclose a receiving cavity 50. A battery cell 120 can be placed in the receiving cavity 50. The receiving cavity 50 formed by the four frames 10 is rectangular. One group of two opposing frames 10 in the four frames 10 is a first side frame 11, and the other group of two opposing frames 10 is a second side frame 12. The first side frame 11 is a hollow profile beam. The hollow profile beam is stronger than the single-layer profile beam. The hollow profile beam is not solid, which also reduces a certain amount of weight. The two first side frames 11 are hollow profile beams, which are conducive to connecting the two ends of the beam 30, so that the box 110 provided with the beam 30 is not easy to deform. In addition, it is convenient to fix and transfer the box 110 through the two first side frames 11 with higher strength. The second side frame 12 is a single-layer profile beam, which further reduces the mass of the box 110. Both ends of the first side frame 11 have openings, and the openings 20 at both ends of the first side frame 11 are respectively blocked by the ends of a second side frame 12 to prevent dust and other impurities from entering the first side frame 11 through the openings, causing the battery device 100 to produce abnormal noise. The two opposite second side frames 12 correspond to the front side and the rear side of the vehicle in the direction of travel when the battery device 100 is used in the vehicle.

[0054] In some other embodiments, the number of the frames 10 may also be three, five, six or other reasonable numbers. In addition, the first side frame 11 may also have an opening 20 at one end, and a second side frame 12 is provided at one end of the first side frame 11 to block the opening 20. In addition, in the present embodiment, the number of the first side frames 11 is two, and in some other embodiments, the number of the first side frames 11 may also be one or other numbers. In addition, in the present embodiment, the plane shape of the accommodating cavity 50 formed by the four frames 10 is rectangular, and in some other embodiments, the accommodating cavity 50 formed by the multiple frames 10 may also be in other shapes such as triangle, circle, irregular polygon or the like. Among them, the shape of each frame 10 is usually rectangular plate-shaped, and of course, the frame 10 may also be in other shapes, such as bent or curved shapes. When the frame wall 111 of the frame 10 is in the shape of a curved plate, the edge of the accommodating cavity 50 formed by the frame 10 may be in a curved shape. In addition, the first side frame 11 intersects with the second side frame 12 , and the first side frame 11 and the second side frame 12 may be perpendicular to each other, or the angle between the first side frame 11 and the second side frame 12 may be an acute angle or an obtuse angle.

[0055] In the above manner, the opening 20 at the end of the first side frame 11 is directly blocked by the end of the second side frame 12, and does not need to be blocked by a blocking piece, thereby eliminating the setting of the blocking piece, thereby reducing the processing cost of the box body 110 and simplifying the processing process.

[0056] Please refer to Figure 5 , Figure 5 for Figure 2 In some embodiments, the second side frame 12 includes a main body section 121 and a blocking section 122 located at at least one end of the main body section 121 , and the blocking section 122 is connected to the first side frame 11 and blocks the opening 20 .

[0057] The main section 121 of the second side frame 12 is used to enclose with the first side frame 11 to form the accommodating cavity 50, and the blocking section 122 of the second side frame 12 is used to block the opening 20 of the second side frame 12. In this embodiment, both ends of the main section 121 have blocking sections 122. In some other embodiments, the main section 121 may also have a blocking section 122 at one end. In addition, the blocking section 122 and the main section 121 may both be sheet-like or plate-like structures. In this embodiment, the blocking section 122 may be coplanar with the main section 121. In some other embodiments, the blocking section 122 and the main section 121 may also be arranged at an angle. When the blocking section 122 and the main section 121 are arranged at an angle, the plane where the opening 20 at the end of the first side frame 11 is located may not be perpendicular to the axial direction of the first side frame 11.

[0058] As described above, the blocking section 122 of the second side frame 12 blocks the opening 20 , and no blocking piece is required.

[0059] In some embodiments, the main body segment 121 and the blocking segment 122 are integrally formed.

[0060] The second side frame 12 is an integrally formed structure, which can be manufactured by extrusion, stamping, etc. The main section 121 and the blocking section 122 are integrally formed, and there is no parting line or connection between the main section 121 and the blocking section 122. The structure of the second side frame 12 is more complete and has higher strength. In some other embodiments, the main section 121 and the frame 10 can also be fixed together by welding.

[0061] The integrally formed second side frame 12 has better integrity, and the box body 110 has higher strength.

[0062] In some embodiments, the shape of the opening 20 is the same as the shape of the blocking segment 122 .

[0063] The shapes of the opening 20 at the end of the first side frame 11 and the blocking section 122 of the second side frame 12 can both be in a reasonable shape such as a rectangle, a triangle, a circle, an irregular polygon, etc. In this embodiment, the opening 20 at the end of the first side frame 11 and the blocking section 122 are both rectangular. In addition, in the height direction z of the accommodating cavity 50, the size of the main section 121 and the blocking section 122 of the second side frame 12 can be the same or different. In this embodiment, in the height direction z of the accommodating cavity 50, the size of the main section 121 is larger than the size of the blocking section 122, and a stepped edge is formed at the connection between the main section 121 and the blocking section 122.

[0064] As described above, the blocking section 122 of the second side frame 12 can completely block the opening 20 at the end of the first side frame 11, thereby preventing the opening 20 of the frame 10 from being incompletely blocked, causing the box body 110 to generate abnormal noise during driving.

[0065] In some embodiments, a guide portion (not shown) is provided on the blocking section 122 , and the guide portion is clamped and fixed in the opening 20 .

[0066] The shape and size of the guide portion are the same as the internal shape and size of the opening 20. For example, the shape of the guide portion and the internal shape of the opening 20 can both be in a reasonable shape such as a rectangle, a triangle, a circle, an irregular polygon, etc. This arrangement makes the positioning effect of the guide portion better. When the guide portion of the second side frame 12 is inserted into the opening 20 at the end of the first side frame 11, the relative position of the first side frame 11 and the second side frame 12 can be fixed, and the blocking section 122 can cover the correct position of the opening 20, so that the opening 20 is completely covered. In a preferred embodiment, the shape of the blocking section 122 is the same as the external shape of the opening 20.

[0067] Furthermore, the guide part can be provided in one or more configurations. In some embodiments, when one guide part is provided, the guide part is provided at least in a circle along the edge of the side of the blocking section 122 facing the first side frame 11. This improves the positioning effect of the guide part. In other embodiments, when multiple guide parts are provided, multiple guide parts are provided in a circle along the edge of the side of the blocking section 122 facing the first side frame 11. Among them, it is preferred that the guide part and the blocking section 122 are an integrally formed structure.

[0068] Through the above structure, the guide part plays a positioning role, and when the guide part of the second side frame 12 is inserted into the opening 20 at the end of the first side frame 11, the first side frame 11 and the second side frame 12 are positioned. Before the first side frame 11 and the second side frame 12 are welded and fixed, it is not necessary to use a positioning fixture or other tools for positioning, which improves the accuracy of the position of the first side frame 11 and the second side frame 12 and improves the structural accuracy of the box body 110.

[0069] In some embodiments, the first side frame 11 includes a frame wall 111 and a mounting beam 112 , at least one end of the mounting beam 112 has an opening 20 ; the frame wall 111 is connected to the main body section 121 to enclose a receiving cavity 50 , and the mounting beam 112 is connected to a side of the frame wall 111 facing away from the receiving cavity 50 .

[0070] In this embodiment, the box body 110 includes two opposite first side frames 11, and the frame walls 111 of the two first side frames 11 are provided with mounting beams 112 on the side facing away from the accommodating cavity 50. The two first side frames 11 are hollow profile beams, which have high strength and are conducive to connecting the two ends of the cross beam 30, so that the box body 110 provided with the cross beam 30 is not easily deformed, and it is also convenient to fix and transfer the box body 110 through the two first side frames 11 with higher strength.

[0071] In addition, the outer shape of the mounting beam 112 can be any reasonable shape such as a rectangle, a cylinder, a polygon, etc.

[0072] As mentioned above, the mounting beam 112 of the box 110 is used to improve the strength of the box 110 and can also be used to fix the battery device 100 on the electrical device. The mounting beam 112 also facilitates the fixing of the box 110 on the transport device during the production of the battery device 100, which is beneficial to the transportation of the box 110.

[0073] In some embodiments, the mounting beam 112 and the frame wall 111 are integrally formed.

[0074] The mounting beam 112 is integrally formed with the frame wall 111, and can be manufactured by extrusion, stamping, etc. The mounting beam 112 is integrally formed with the blocking section 122, and there is no parting line or connection part between the mounting beam 112 and the blocking section 122, so that the structure of the first side frame 11 is more complete and the strength is higher. In some other embodiments, the mounting beam 112 and the frame wall 111 can also be fixed together by welding.

[0075] In addition, in the height direction z of the accommodating cavity 50, the size of the mounting beam 112 and the frame wall 111 of the first side frame 11 may be the same or different. In this embodiment, in the height direction z of the accommodating cavity 50, the size of the frame wall 111 is larger than the size of the mounting beam 112, and a stepped outer wall is formed at the connection between the frame wall 111 and the mounting beam 112.

[0076] As described above, the first side frame 11 is integrally formed, which improves the integrity and structural strength of the first side frame 11 , and the strength of the box body 110 is higher.

[0077] In some embodiments, the blocking section 122 is welded to the opening 20 .

[0078] The welding fixation method can reduce the risk of a gap between the blocking section 122 and the opening 20 , and the welding fixation can also make the first side frame 11 and the second side frame 12 more securely fixed.

[0079] The box body 110 is fixed by welding, and has better integrity, is less likely to loosen, and does not require additional components for fixing, which is beneficial to reducing the weight of the box body 110.

[0080] In some embodiments, the frame wall 111 and the second side frame 12 are both single-layer profile beams, and the thickness of the single-layer profile beam ranges from 1 mm to 6 mm.

[0081] The frame wall 111 and the second side frame 12 of the single-layer profile beam are lighter, and are also beneficial to the heat dissipation of the box body 110. The specific thickness of the single-layer profile beam can be 1 mm, 3 mm, 5 mm, 6 mm, etc., so that the box body 110 has a lighter weight and the single-layer profile beam has better strength. In addition, the material of the frame 10 can include aluminum alloy or steel.

[0082] The box body 110 is made of a single-layer profile beam, which can reduce the weight of the box body 110 and reduce the processing cost. On the other hand, the box body 110 made of a single-layer profile beam is easy to manage the heat of the battery device 100 and improve the performance of the battery device 100.

[0083] Further, in this embodiment, the box 110 also includes a crossbeam 30, which is arranged in the accommodating cavity 50, and the two ends of the crossbeam 30 are respectively fixed on the two opposite first side frames 11. In this embodiment, the first side frame 11 is a hollow profile beam, and the two ends of the crossbeam 30 are fixed on the first side frame 11 for higher strength. Among them, the connection method between the crossbeam 30 and the first side frame 11 can be welding, pasting, clamping, etc. In addition, the number of crossbeams 30 can be any reasonable number such as one, two, three or four. In some other embodiments, the two ends of the crossbeam 30 can also be fixed on the second side frame 12. In some other embodiments, multiple crossbeams 30 can be arranged in parallel or crosswise. The setting of the crossbeam 30 can play a role in supporting the frame 10 and improving the structural strength of the frame 10. On the other hand, the setting of the crossbeam 30 divides the accommodating cavity 50 into several small cavities, which is convenient for the placement of each battery cell 120 and plays a role in positioning and fixing the battery cell 120. The cross beam 30 can also support and protect the battery cell 120 to prevent the battery cell 120 from deforming during charging and discharging.

[0084] Please refer to Figure 6 , Figure 6 Schematic diagram of the cross-sectional structure of the second side frame according to some embodiments. In some embodiments, the second side frame 12 further includes a flange 40 , which is disposed on at least one side of the main body section 121 in the height direction z of the accommodating cavity 50 .

[0085] The second side frame 12 is a single-layer profile beam, and the second side frame 12 is provided with a flange 40 to improve its strength. In the present embodiment, the flange is in the shape of a flat plate. In some other embodiments, the flange 40 may also be in the shape of a curved surface. The flange 40 may be provided on one side of the main section 121 in the height direction z of the accommodating cavity 50, and the flange 40 may also be provided on both sides of the main section 121 in the height direction z of the accommodating cavity 50. In addition, the flange 40 and the main section 121 form an angle, and the flange 40 and the main section 121 may be specifically arranged vertically, and the angle between the flange 40 and the main section 121 may also be an acute angle or an obtuse angle.

[0086] The arrangement of the flange 40 strengthens the structural strength of the first side frame 11 , thereby improving the structural strength of the box body 110 and reducing the risk of deformation and damage of the box body 110 .

[0087] Furthermore, in some embodiments, two flanges 40 are provided, and the two flanges 40 are provided on both sides of the main body section 121 in the height direction z of the accommodating cavity 50 , and the two flanges 40 are provided on both sides of the main body section 121 .

[0088] The sizes of the two flanges 40 on both sides of the main body section 121 in the height direction z of the accommodating cavity 50 can be the same or different, and the angles between the two flanges 40 and the main body section 121 can also be the same or different.

[0089] The flanges 40 on both sides of the main section 121 are provided so that when the main section 121 is squeezed, both sides of the main section 121 can be supported by the flanges 40, further improving the structural strength of the second side frame 12. In addition, the two flanges 40 are provided on two opposite sides of the main section 121, so that when the box body 110 is squeezed at different angles, the main section 121 can be supported by the flanges 40.

[0090] In some preferred embodiments, the cross beam 30 includes a beam wall 31 and a folded edge 32, the folded edge 32 is arranged on any surface of the beam wall 31, and the folded edge 32 is arranged on one side or both sides of the beam wall in the height direction z of the accommodating cavity 50. The arrangement of the folded edge 32 improves the structural strength of the cross beam 30 and further reduces the risk of deformation and damage of the box body 110.

[0091] The present application also provides an electric device, which includes a battery device 100, and the battery device 100 is used to provide electric energy. It should be noted that the electric device can be a vehicle. The battery device 100 in this embodiment is the battery device 100 described in the above embodiment, and will not be described one by one here.

[0092] Finally, in a specific application scenario, the problem that the box body 110 of the existing battery device 100 needs to be sealed with a separate blocking piece to block the opening 20. The battery device 100 of the present application includes: a battery cell 120 and a box body 110, the box body 110 includes four frames 10, the four frames 10 enclose a receiving cavity 50, and the battery cell 120 is arranged in the receiving cavity 50. One group of two opposite frames 10 in the four frames 10 is a first side frame 11, the first side frame 11 is a hollow profile beam, and both ends of the first side frame 11 have openings, and another group of two opposite frames 10 in the four frames 10 is a second side frame 12. The second side frame 12 includes a main body section 121 and a blocking section 122 located at both ends of the main body section 121, and the openings at both ends of the first side frame are blocked by the blocking sections of the two second side frames respectively. The main body section 121 and the blocking section 122 are integrally formed. The shape of the opening 20 and the blocking section 122 are both rectangular. The first side frame 11 includes a frame wall 111 and a mounting beam 112 . The mounting beam 112 has openings 20 at both ends. The frame wall 111 is connected to the main section 121 to enclose a receiving cavity 50 . The mounting beam 112 is connected to a side of the frame wall 111 facing away from the receiving cavity 50 .

[0093] In the above manner, the opening 20 at the end of the first side frame 11 is directly blocked by the end of the second side frame 12, and does not need to be blocked by a blocking piece, thereby eliminating the setting of the blocking piece, thereby reducing the processing cost of the box body 110 and simplifying the processing process.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: The battery device comprises: Battery cells; A box body, wherein the box body includes a plurality of frames, the plurality of frames enclose a receiving cavity, the battery cell is arranged in the receiving cavity, at least one of the plurality of frames is a first side frame, and at least one is a second side frame; the first side frame intersects with the second side frame, the first side frame is a hollow profile beam, at least one end of the first side frame has an opening, and one end of the second side frame is connected to the first side frame and blocks the opening.

2. The battery device according to claim 1, characterized in that: The second side frame includes a main body section and a blocking section located at at least one end of the main body section, and the blocking section is connected to the first side frame and blocks the opening.

3. The battery device according to claim 2, characterized in that: The main body section and the blocking section are integrally formed.

4. The battery device according to claim 3, characterized in that: The shape of the opening is the same as that of the blocking section.

5. The battery device according to claim 4, characterized in that: The blocking section is provided with a guide portion, and the guide portion is clamped and fixed in the opening.

6. The battery device according to claim 2, characterized in that: The first side frame includes a frame wall and a mounting beam, and at least one end of the mounting beam has an opening; The frame wall is connected to the main body section to enclose and form the accommodating cavity, and the mounting beam is connected to a side of the frame wall facing away from the accommodating cavity.

7. The battery device according to claim 6, characterized in that: The mounting beam and the frame wall are integrally formed.

8. The battery device according to claim 7, characterized in that: The blocking section is welded to the opening.

9. The battery device according to claim 7, characterized in that: The frame wall and the second side frame are both single-layer profile beams, and the thickness of the single-layer profile beam ranges from 1 mm to 6 mm.

10. The battery device according to claim 9, characterized in that: The second side frame further includes a flange, and the flange is arranged on at least one side of the main body section in the height direction of the accommodating cavity.

11. The battery device according to claim 10, characterized in that: There are two flanges, which are respectively arranged on both sides of the main body section in the height direction of the accommodating cavity, and the two flanges are respectively arranged on two sides of the main body section.

12. An electrical device, characterized in that: The electrical device comprises the battery device according to any one of claims 1 to 11, and the battery device is used to provide electrical energy.

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