Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device. The battery device comprises a battery monomer and a box body, the box body comprises a containing space and a frame arranged along the periphery of the containing space, the battery monomer is contained in the containing space, the frame comprises two first beams and two second beams, the two first beams are oppositely arranged in the first direction, and the two second beams are oppositely arranged in the second direction; the first direction intersects the second direction. The frame further comprises at least one connecting beam, and the connecting beam is connected between the adjacent first beam and second beam. The frame further comprises a first landing edge piece, the first landing edge piece is connected with the connecting beam and the first beam, and the first landing edge piece and the first beam are at least partially overlapped in the first direction. According to the invention, the reliability of the battery device can be effectively improved.

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] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0003] In the development of battery technology, the reliability of battery devices will directly affect the reliability, cost of use and user experience of terminal products. Therefore, how to effectively improve the reliability of battery devices is a technical issue that needs to be continuously improved in battery technology. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and an electrical device, which can effectively improve the reliability of the battery device.

[0005] In a first aspect, an embodiment of the present application provides a battery device, the battery device includes a battery cell and a box body, the box body includes a storage space and a frame arranged along the periphery of the storage space, the battery cell is accommodated in the storage space, the frame includes two first beams and two second beams, the two first beams are arranged opposite to each other along a first direction, the two second beams are arranged opposite to each other along a second direction, and the first direction intersects with the second direction. The frame also includes at least one connecting beam, the connecting beam is connected between adjacent first beams and second beams. The frame also includes a first lap part, the first lap part connects the connecting beam and the first beam, and the first lap part and the first beam at least partially overlap in the first direction.

[0006] The above technical solution can not only reduce the difficulty of connecting the first beam and the second beam by providing a connecting beam, but also the connecting beam can bear part of the force when the battery device is hit or shaken, so that the frame can resist a higher strength load, thereby effectively improving the reliability of the battery device. By providing a first lap part, the first lap part can increase the contact area between the connecting beam and the first beam, and when the battery device is hit or shaken, the first lap part can bear part of the force, so that the frame can resist a higher strength load, thereby effectively improving the reliability of the battery device.

[0007] In some embodiments of the first aspect, a first groove is formed between the first bridging member and the connecting beam, and a portion of the first beam is accommodated in the first groove.

[0008] The above technical solution, by introducing the first groove, can, on the one hand, play a positioning role in the assembly process of the first beam and the connecting beam, thereby improving the docking accuracy and assembly efficiency between the first beam and the connecting beam. On the other hand, the first groove can accommodate a portion of the first beam to reduce the thickness of the connection between the first beam and the first lap part, thereby helping to improve the energy density of the battery device.

[0009] In some embodiments of the first aspect, the first overlapping member is welded to the first beam.

[0010] The welding cost is low and the reliability is high, so the connection strength between the first lap part and the first beam can be improved while reducing the cost.

[0011] In some embodiments of the first aspect, a first angle is formed between the connecting beam and the first beam, and the first overlap member is bent relative to the connecting beam toward the first beam and forms the first angle with the connecting beam.

[0012] Not only can the first lap part and the first beam have a better fit, but the bending connection structure between the connecting beam and the first beam can also be realized through the first lap part to simplify the structural complexity of the connecting beam and the first beam, which helps to reduce the overall cost of the battery device.

[0013] In some embodiments of the first aspect, the first bridge member and the connecting beam at least partially overlap in a thickness direction of the connecting beam.

[0014] The above technical solution can form an additional connecting structure between the first lap part and the connecting beam. The overlapping part of the connecting beam and the first lap part increases the contact area between the two, which can improve the connection firmness between the connecting beam and the first lap part, thereby further improving the overall structural strength of the frame.

[0015] In some embodiments of the first aspect, the first overlapping piece is overlapped on one side of the first beam along its own thickness direction.

[0016] The above technical solution realizes the connection between the first overlapping member and the first beam by overlapping, which is simple to operate and is beneficial to improving the overall preparation rate of the battery device.

[0017] In some embodiments of the first aspect, a first groove matching the first overlapping member is formed on the first beam, and the first overlapping member is inserted into the first groove.

[0018] The above technical solution further increases the contact area between the first lap member and the first beam by plugging the first lap member into the first groove, thereby further improving the connection firmness between the first lap member and the first beam and further improving the reliability of the battery device.

[0019] In some embodiments of the first aspect, the connecting beam includes a first wall portion, a second wall portion and a third wall portion, the first wall portion is connected between the second wall portion and the third wall portion, the second wall portion and the third wall portion are arranged opposite to each other along the third direction, the plane where the second wall portion is located intersects with the plane where the first wall portion is located, the plane where the third wall portion is located intersects with the plane where the first wall portion is located, the first overlapping member connects the first wall portion and the first beam, and the first direction, the second direction and the third direction are perpendicular to each other.

[0020] The above technical solution can not only further improve the structural strength of the first beam itself, but also facilitate the arrangement of related components in the battery device. In addition, since the first wall portion is connected between the second wall portion and the third wall portion, and the first lap member connects the first wall portion and the first beam, the force uniformity of the first lap member can be improved.

[0021] In some embodiments of the first aspect, the second wall portion protrudes from a side of the first wall portion facing away from the accommodating space; and / or the third wall portion protrudes from a side of the first wall portion facing away from the accommodating space.

[0022] The occupation of the accommodation space can be reduced, thereby reducing the impact on the arrangement of the battery cells in the battery device.

[0023] In some embodiments of the first aspect, the first beam includes a fourth wall portion, a fifth wall portion and a sixth wall portion, the fourth wall portion is connected between the fifth wall portion and the sixth wall portion, the fifth wall portion and the sixth wall portion are arranged opposite to each other along a third direction, the plane where the fifth wall portion is located intersects with the plane where the fourth wall portion is located, the plane where the sixth wall portion is located intersects with the plane where the fourth wall portion is located, and the first overlapping member connects the first wall portion and the fourth wall portion.

[0024] The above technical solution can not only effectively improve the structural strength of the second beam itself, but also further improve the convenience of setting the relevant components in the battery device. In addition, since the fourth wall portion is connected between the fifth wall portion and the sixth wall portion, the first side member connects the first wall portion and the fourth wall portion, which can improve the uniformity of the force of the first side member.

[0025] In some embodiments of the first aspect, the frame also includes a second edging piece, the second edging piece connects the second wall portion and the fifth wall portion, and the second edging piece and the fifth wall portion at least partially overlap in the third direction; and / or, the frame also includes a third edging piece, the third edging piece connects the third wall portion and the sixth wall portion, and the third edging piece and the sixth wall portion at least partially overlap in the third direction.

[0026] The above technical solution can further improve the structural strength of the frame, thereby further improving the reliability of the battery device.

[0027] In some embodiments of the first aspect, the first overlapping member and the connecting beam are an integrally formed structure.

[0028] On the one hand, there is no need to connect the first lap part and the connecting beam through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the first lap part and the connecting beam through an additional connection process, the first lap part and the connecting beam in an integrated structure have a higher connection firmness.

[0029] In some embodiments of the first aspect, at least one of the connecting beam, the first beam, and the second beam is a single-layer plate structure.

[0030] The structural complexity of the frame can be simplified, which is beneficial to reducing the overall manufacturing cost of the battery device.

[0031] In some embodiments of the first aspect, the first beam and the connecting beam are an integrally formed structure; and / or the second beam and the connecting beam are an integrally formed structure.

[0032] It can not only simplify the manufacturing process, but also improve the connection firmness between the first beam and the connecting beam.

[0033] In some embodiments of the first aspect, the first beam is welded to the connecting beam.

[0034] The welding process has low cost and high reliability, and thus can reduce the cost while improving the connection strength between the first beam and the connection beam.

[0035] In a second aspect, the present application provides an electrical device, comprising a battery device provided by any embodiment of the first aspect, and the battery device is used to store or provide electrical energy.

[0036] 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

[0037] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0038] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0039] Figure 2 A schematic diagram of the structure of a battery device provided in some embodiments of the present application;

[0040] Figure 3A schematic diagram of a partial explosion structure of a frame of a battery device provided in some embodiments of the present application;

[0041] Figure 4 A partial front view structural diagram of a frame of a battery device provided in some embodiments of the present application;

[0042] Figure 5 for Figure 4 Schematic diagram of the cross-section structure along AA;

[0043] Figure 6 for Figure 5 A schematic diagram of the structure shown in a separated state;

[0044] Figure 7 A partial front view structural diagram of a frame of another battery device provided in some embodiments of the present application;

[0045] Figure 8 for Figure 7 Schematic diagram of the cross-section structure along BB;

[0046] Fig. 9 for Figure 8 A schematic diagram of the structure shown in a separated state;

[0047] Fig.10 A partial front view structural diagram of a frame of another battery device provided in some embodiments of the present application;

[0048] Fig.11 for Fig.10 Schematic diagram of the cross-section structure along CC;

[0049] Fig.12 for Fig.11 Schematic diagram of the structure shown in a separated state.

[0050] The reference numerals in the specific implementation manner are as follows:

[0051] 1. Vehicle; 2. Battery device; 3. Controller; 4. Motor;

[0052] 10. Battery cells;

[0053] 20. Box body; 21. Frame;

[0054] 30. first beam; 31. fourth wall portion; 32. fifth wall portion; 33. sixth wall portion; 300. first groove;

[0055] 40. Second beam;

[0056] 50. connecting beam; 51. first wall portion; 52. second wall portion; 53. third wall portion; 500. first groove;

[0057] 60, first overlapping piece; 70, second overlapping piece; 80, third overlapping piece;

[0058] X, first direction; Y, second direction; Z, third direction; a, first angle. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0060] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0061] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places 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.

[0062] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can 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 application generally indicates that the associated objects before and after are in an "or" relationship.

[0064] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are 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 descriptions and should not constitute any limitation to the present application.

[0065] The term “plurality” used in this application refers to two or more (including two).

[0066] In the present application, the term "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; meanwhile, "vertical" includes not only the absolutely vertical situation, but also the roughly vertical situation conventionally recognized in engineering.

[0067] In the present application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this.

[0068] The battery device mentioned in the embodiments of the present application may include one or more battery cells to provide a single physical module with higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel or in mixed connection through a busbar component.

[0069] In some embodiments, the battery device may be a battery module; when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0070] In some embodiments, the battery device may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0071] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0072] In some embodiments, the battery device may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0073] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0074] In the development of battery technology, the reliability of battery devices will directly affect the reliability, usage cost and user experience of the end products.

[0075] In current battery devices, the frame in the box is usually formed by directly splicing multiple beams, and the multiple beams are directly connected by welds. However, when the battery device is subjected to external forces (such as vibration or impact), the multiple beams are completely stressed by the welds, resulting in a low overall structural strength of the frame, which is prone to the risk of fracture and seriously affects the reliability of the battery device.

[0076] Based on the above considerations, an embodiment of the present application provides a battery device, which includes a battery cell and a box body, the box body includes a storage space and a frame arranged along the periphery of the storage space, the battery cell is accommodated in the storage space, the frame includes two first beams and two second beams, the two first beams are arranged oppositely along a first direction, the two second beams are arranged oppositely along a second direction, and the first direction intersects the second direction. The frame also includes at least one connecting beam, which connects the adjacent first beams and second beams.

[0077] The above technical solution can not only reduce the difficulty of connecting the first beam and the second beam by setting a connecting beam, but also the connecting beam can bear part of the force when the battery device is collided or shaken, so that the frame can resist higher strength loads, thereby effectively improving the reliability of the battery device.

[0078] The technical solutions described in the embodiments of the present application are applicable to battery devices and electrical devices using the battery devices.

[0079] Electrical devices may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, electric tools, etc. Vehicles may be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc. Spacecraft include aircraft, rockets, space shuttles and spacecrafts, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc.

[0080] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery devices and electrical devices described above, but can also be applied to all battery devices including battery boxes and electrical devices using battery devices. However, for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0081] Figure 1A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0082] Continue to refer Figure 1 The vehicle 1 is provided with a battery device 2 inside, and the battery device 2 can be provided at the bottom, head, or tail of the vehicle 1. The battery device 2 can be used for powering the vehicle 1, for example, the battery device 2 can be used as an operating power source for the vehicle 1.

[0083] The vehicle 1 may further include a controller 3 and a motor 4 , wherein the controller 3 is used to control the battery device 2 to supply power to the motor 4 , for example, to meet the power requirements of starting, navigating and driving the vehicle 1 .

[0084] In some embodiments of the present application, the battery device 2 can not only serve as an operating power source for the vehicle 1, but also serve as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0085] Figure 2 This is a schematic diagram of the structure of a battery device provided in some embodiments of the present application. Figure 3 A schematic diagram of a partial explosion structure of a frame of a battery device provided in some embodiments of the present application, Figure 4 This is a partial front view structural diagram of a frame of a battery device provided in some embodiments of the present application. Figure 5 for Figure 4 Schematic diagram of the cross-section structure along AA, Figure 6 for Figure 5 Schematic diagram of the structure shown in a separated state.

[0086] refer to Figures 2 to 6 The embodiment of the present application provides a battery device, which includes a battery cell 10 and a box 20. The box 20 includes a storage space and a frame 21 arranged along the periphery of the storage space. The battery cell 10 is accommodated in the storage space. The frame 21 includes two first beams 30 and two second beams 40. The two first beams 30 are arranged opposite to each other along a first direction X, and the two second beams 40 are arranged opposite to each other along a second direction Y. The first direction X intersects the second direction Y. The frame 21 also includes at least one connecting beam 50, which connects the adjacent first beams 30 and second beams 40.

[0087] In the battery device, the box 20 is used to accommodate the battery cell 10. The box 20 can be a variety of structures, such as a cylinder, a cuboid, etc. The battery cell 10 can be one or more. If there are multiple battery cells 10, the multiple battery cells 10 can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple battery cells 10 are both connected in series and in parallel. Multiple battery cells 10 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 10 is accommodated in the box 20; of course, multiple battery cells 10 can also be connected in series, in parallel, or in mixed connection to form a battery module, and then multiple battery modules are connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box 20.

[0088] In some examples, there are multiple battery cells 10 , and the multiple battery cells 10 are first connected in series, in parallel, or in hybrid connection to form a battery module. The multiple battery modules are then connected in series, in parallel, or in hybrid connection to form a whole, and are accommodated in the box 20 .

[0089] The multiple battery cells 10 in the battery module can be electrically connected through a busbar component to achieve parallel connection, series connection or mixed connection of the multiple battery cells 10 in the battery module.

[0090] Exemplarily, the frame 21 may be a rectangular frame 21, a cylindrical frame 21, or other irregular frames 21, etc. Accordingly, the shape of the accommodating space matches the shape of the frame 21. If the frame 21 is a rectangular frame 21, then the accommodating space is a rectangular parallelepiped, and if the frame 21 is a cylindrical frame 21, then the accommodating space is a cylinder.

[0091] Optionally, the frame 21 can be but is not limited to being made of metal or non-metallic materials. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metallic material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0092] The first beam 30 and the second beam 40 are adjacently arranged along the outer periphery of the accommodation space. The first beam 30 and the second beam 40 can be rectangular beam bodies, cylindrical beam bodies, plate-shaped beam bodies, or other irregular beam bodies.

[0093] Optionally, the first beam 30 and the second beam 40 may be various beam structures such as but not limited to rolled beams, profile beams or plates.

[0094] In some examples, the first direction X is perpendicular to the second direction Y.

[0095] In some examples, the first direction X is a stacking direction of the battery cells 10 .

[0096] The connecting beam 50 is connected between the adjacent first beams 30 and the second beams 40. The connecting beam 50 may be directly connected to the first beam 30 and the second beam 40, or may be limited to the first beam 30 and the second beam 40 by other components. As an example, the connection between the connecting beam 50 and the first beam 30 and the connection between the connecting beam 50 and the second beam 40 may be, but not limited to, bolt connection, welding, riveting, clamping or bonding.

[0097] Optionally, the connecting beam 50 may be a variety of beam structures such as, but not limited to, a rolled beam, a profile beam or a plate.

[0098] The above technical solution can not only reduce the difficulty of connecting the first beam 30 and the second beam 40 by setting the connecting beam 50, but also the connecting beam 50 can bear part of the force when the battery device is collided or shaken, so that the frame 21 can resist higher strength loads, thereby effectively improving the reliability of the battery device.

[0099] In some embodiments, the frame 21 further includes a first bridging member 60 , which connects the connecting beam 50 and the first beam 30 , and the first bridging member 60 and the first beam 30 at least partially overlap in the first direction X.

[0100] Exemplarily, the first lap member 60 may be directly connected to the connecting beam 50 and the first beam 30, or may be restricted to the connecting beam 50 and the first beam 30 by other components. As an example, the connection between the first lap member 60 and the connecting beam 50 and the connection between the first lap member 60 and the first beam 30 may be, but not limited to, bolt connection, welding, riveting, clamping or bonding, etc.

[0101] The first lap member 60 and the first beam 30 at least partially overlap in the first direction X. It can be understood that the entire first lap member 60 and the entire first beam 30 overlap in the first direction X, or a portion of the first lap member 60 and a portion of the first beam 30 overlap in the first direction X.

[0102] In some examples, the first bridging member 60 is overlapped on one side of the first beam 30 along its thickness direction, so that the first bridging member 60 and the first beam 30 at least partially overlap in the first direction X.

[0103] In other examples, the first lap member 60 is plugged into the first beam 30 to achieve at least partial overlap of the first lap member 60 and the first beam 30 in the first direction X. The first lap member 60 and the first beam 30 may be plugged into each other in the form of a mortise and tenon structure.

[0104] In some other examples, the first lap part 60 and the first beam 30 may also be in the form of male-female matching, so as to achieve at least partial overlap of the first lap part 60 and the first beam 30 in the first direction X. The form of male-female matching can be understood as follows: the first lap part 60 protrudes from the side surface of the connecting beam 50 facing the first beam 30, a first recess is formed between the first lap part 60 and the connecting beam 50, a convex portion is provided on the first beam 30, the convex portion protrudes from the side surface of the first beam 30 facing the first lap part 60, a second recess is formed between the convex portion and the second beam 40, the first lap part 60 is inserted in the second recess, and the convex portion is inserted in the first recess.

[0105] The first lap member 60 forms an additional connection structure between the connecting beam 50 and the first beam 30 through the above arrangement. The overlapping portion of the first lap member 60 and the first beam 30 increases the contact area between the two. This increase in contact area means that when the frame 21 is subjected to external force (such as vibration or impact), the force can be more evenly distributed to multiple contact points, reducing the stress concentration of a single connection point, thereby improving the fatigue resistance of the entire frame 21.

[0106] Furthermore, in the current traditional frame 21 structure, two adjacent beams are usually connected by simple contact or edge connection. When subjected to external force, this method has a short and discontinuous force transmission path, which easily forms a stress concentration point.

[0107] In the embodiment of the present application, the first bridging member 60 and the first beam 30 at least partially overlap in the first direction X, so that the force transmission path is extended and optimized, becoming more continuous and smooth, thereby effectively reducing the stress concentration of the structure.

[0108] Optionally, the first bridging member 60 may be, but is not limited to, a plate-like structure, a block-like structure, or a columnar structure.

[0109] Optionally, the first overlap member 60 may be but is not limited to being made of metal or non-metallic materials. For example, the metal material may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metallic material may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0110] The above technical solution sets a first bridging member 60, which can increase the contact area between the connecting beam 50 and the first beam 30. When the battery device is collided or shaken, the first bridging member 60 can bear part of the force, so that the frame 21 can resist higher strength loads, thereby effectively improving the reliability of the battery device.

[0111] In some embodiments, a first groove 500 is formed between the first bridging member 60 and the connecting beam 50 , and a portion of the first beam 30 is accommodated in the first groove 500 .

[0112] In some examples, the thickness of the first bridging member 60 may be smaller than the thickness of the connecting beam 50 , so that the first bridging member 60 and the connecting beam 50 together define the first groove 500 .

[0113] In other examples, the first lap part 60 may have a first groove 500 formed thereon, and the first groove 500 is located between the first lap part 60 and the first wall portion 51. In other words, the first lap part 60 is L-shaped, and the first lap part 60 and the first wall portion 51 define the first groove 500 together.

[0114] The above technical solution, by introducing the first groove 500, can, on the one hand, play a positioning role in the assembly process of the first beam 30 and the connecting beam 50, thereby improving the docking accuracy and assembly efficiency between the first beam 30 and the connecting beam 50. On the other hand, the first groove 500 can accommodate a portion of the first beam 30 to reduce the thickness of the connection between the first beam 30 and the first lap member 60, thereby helping to improve the energy density of the battery device.

[0115] In some embodiments, the first lap member 60 is welded to the first beam 30. In other words, the edge of the first lap member 60 is welded to the first beam 30 to form a weld.

[0116] The welding process has low cost and high reliability, and thus can reduce the cost while improving the connection strength between the first bridging member 60 and the first beam 30 .

[0117] Figure 7 This is a partial front view structural diagram of a frame of another battery device provided in some embodiments of the present application. Figure 8 for Figure 7 Schematic diagram of the cross-section structure along BB, Fig. 9 for Figure 8 Schematic diagram of the structure shown in the separated state, Fig.10 This is a partial front view structural diagram of a frame of another battery device provided in some embodiments of the present application. Fig.11 for Fig.10 Schematic diagram of the cross-section structure along CC, Fig.12 for Fig.11 Schematic diagram of the structure shown in a separated state.

[0118] Continue to refer Figures 7 to 12 In some embodiments, a first angle a is formed between the connecting beam 50 and the first beam 30 , and the first lap member 60 is bent relative to the connecting beam 50 toward the first beam 30 and forms the first angle a with the connecting beam 50 .

[0119] There is a first angle a between the connecting beam 50 and the first beam 30, and this structural design can improve the overall structural stability of the frame 21. Based on this, the first side member 60 is bent relative to the connecting beam 50 in a direction close to the first beam 30, and forms the first angle a with the connecting beam 50. This bending design can not only make the first side member 60 and the first beam 30 have better fit, but also can realize the bending connection structure between the connecting beam 50 and the first beam 30 through the first side member 60, so as to simplify the structural complexity of the connecting beam 50 and the first beam 30, and help reduce the overall cost of the battery device.

[0120] In addition, the first side member 60 and the connecting beam 50 form a first angle a, and the bending structure between the first side member 60 and the connecting beam 50 can produce a certain buffering effect when subjected to external force (such as vibration or impact), which can not only extend the fatigue life of the frame 21, but also enable the frame 21 to remain stable under higher intensity load conditions.

[0121] Exemplarily, the first angle a may be an acute angle, a right angle, or an obtuse angle.

[0122] In some embodiments, the first bridge member 60 and the connecting beam 50 at least partially overlap in the thickness direction of the connecting beam 50 .

[0123] Exemplarily, the first lap member 60 and the connecting beam 50 at least partially overlap in the thickness direction of the connecting beam 50. It can be understood that the entire first lap member 60 and the entire connecting beam 50 overlap in the thickness direction of the connecting beam 50, or a portion of the first lap member 60 and a portion of the connecting beam 50 overlap in the thickness direction of the connecting beam 50.

[0124] The above technical solution can form an additional connecting structure between the first lap member 60 and the connecting beam 50. The overlapping part of the connecting beam 50 and the first lap member 60 increases the contact area between the two, which can improve the connection firmness between the connecting beam 50 and the first lap member 60, thereby further improving the overall structural strength of the frame 21.

[0125] In some embodiments, the first overlapping member 60 is overlapped on one side of the first beam 30 along its thickness direction.

[0126] For example, the first bridging member 60 may be overlapped on a side of the first beam 30 facing the accommodation space, or the first bridging member 60 may be overlapped on a side of the first beam 30 facing away from the accommodation space.

[0127] The above technical solution realizes the connection between the first overlapping member 60 and the first beam 30 by overlapping, which is simple to operate and is beneficial to improving the overall preparation rate of the battery device.

[0128] In some embodiments, the first bridging member 60 is overlapped on the side of the first beam 30 facing away from the accommodation space, so as to reduce the occupation of the accommodation space by the first bridging member 60 and reduce the influence on the arrangement of the battery cells 10 and electrical components in the battery device.

[0129] In some embodiments, a first groove 300 matching the first bridging member 60 is formed on the first beam 30 , and the first bridging member 60 is inserted into the first groove 300 .

[0130] Exemplarily, the first channel 300 matches the first lap member 60, which means that the setting position and structural shape of the first channel 300 correspond to the setting position and structural shape of the first lap member 60. For example, the first lap member 60 is a rectangular parallelepiped, and the first groove is also a corresponding rectangular groove.

[0131] The above technical solution further increases the contact area between the first lap member 60 and the first beam 30 by plugging the first lap member 60 into the first groove 300, thereby further improving the connection firmness between the first lap member 60 and the first beam 30, thereby further improving the reliability of the battery device.

[0132] Continue to combine Figure 3 In some embodiments, the connecting beam 50 includes a first wall portion 51, a second wall portion 52 and a third wall portion 53, the first wall portion 51 is connected between the second wall portion 52 and the third wall portion 53, the second wall portion 52 and the third wall portion 53 are arranged opposite to each other along the third direction Z, the plane where the second wall portion 52 is located intersects with the plane where the first wall portion 51 is located, the plane where the third wall portion 53 is located intersects with the plane where the first wall portion 51 is located, the first overlapping member 60 connects the first wall portion 51 and the first beam 30, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0133] Exemplarily, the second wall portion 52 may be detachably connected to the first wall portion 51, or may be integrally provided on the first wall portion 51. The second wall portion 52 may be directly connected to the first wall portion 51, or may be restricted on the first wall portion 51 by other components. As an example, the connection method between the second wall portion 52 and the first wall portion 51 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding, etc.

[0134] The third wall portion 53 may be detachably connected to the first wall portion 51, or may be integrally provided on the first wall portion 51. The third wall portion 53 may be directly connected to the first wall portion 51, or may be restricted on the first wall portion 51 by other components. As an example, the connection method between the third wall portion 53 and the first wall portion 51 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0135] The first wall portion 51, the second wall portion 52 and the third wall portion 53 may be made of the same material or different materials. As an example, the first wall portion 51, the second wall portion 52 and the third wall portion 53 are made of the same material, which can simplify the preparation process and reduce costs.

[0136] In some examples, the first wall portion 51, the second wall portion 52, and the third wall portion 53 are integrally formed. On the one hand, there is no need to connect the first wall portion 51, the second wall portion 52, and the third wall portion 53 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the first wall portion 51, the second wall portion 52, and the third wall portion 53 through an additional connection process, the first wall portion 51, the second wall portion 52, and the third wall portion 53 in an integral structure have a higher connection firmness.

[0137] The plane where the second wall portion 52 is located intersects with the plane where the first wall portion 51 is located, which can be understood as the second wall portion 52 is bent relative to the first wall portion 51. The plane where the third wall portion 53 is located intersects with the plane where the first wall portion 51 is located, which can be understood as the third wall portion 53 is bent relative to the first wall portion 51. In other words, the second wall portion 52 protrudes from one side surface of the first wall portion 51 along its own thickness direction, and the third wall portion 53 protrudes from one side surface of the first wall portion 51 along its own thickness direction. Exemplarily, the second wall portion 52 and the third wall portion 53 may be protruding from the same side of the first wall portion 51 along its own thickness direction, or the second wall portion 52 and the third wall portion 53 may be protruding from opposite sides of the first wall portion 51 along its own thickness direction.

[0138] In some examples, at least one of the second wall portion 52 and the third wall portion 53 is provided with a loading point, and the loading point is used to provide a connection environment for related components in the battery device, wherein the related components in the battery device may be, but are not limited to, connectors, interfaces or sensors.

[0139] The above technical solution can not only further improve the structural strength of the first beam 30 itself, but also facilitate the arrangement of related components in the battery device. In addition, since the first wall portion 51 is connected between the second wall portion 52 and the third wall portion 53, the first bridging member 60 connects the first wall portion 51 and the first beam 30, which can improve the uniformity of the force of the first bridging member 60.

[0140] Of course, in some examples, the first bridging member 60 may also be connected to the second wall portion 52 , and the first bridging member 60 may also be connected to the third wall portion 53 .

[0141] In some embodiments, the first edging member 60 and the first wall portion 51 at least partially overlap along the thickness direction of the first wall portion 51 .

[0142] In some embodiments, the second wall portion 52 protrudes from the side of the first wall portion 51 that faces away from the accommodation space, so as to reduce the occupation of the accommodation space and thus reduce the impact on the arrangement of the battery cells 10 in the battery device.

[0143] In some embodiments, the third wall portion 53 protrudes from the side of the first wall portion 51 that faces away from the accommodation space, so as to reduce the occupation of the accommodation space and thus reduce the impact on the arrangement of the battery cells 10 in the battery device.

[0144] In some embodiments, the first beam 30 includes a fourth wall portion 31, a fifth wall portion 32 and a sixth wall portion 33, the fourth wall portion 31 is connected between the fifth wall portion 32 and the sixth wall portion 33, the fifth wall portion 32 and the sixth wall portion 33 are arranged opposite to each other along the third direction Z, the plane where the fifth wall portion 32 is located intersects with the plane where the fourth wall portion 31 is located, the plane where the sixth wall portion 33 is located intersects with the plane where the fourth wall portion 31 is located, and the first overlapping member 60 connects the first wall portion 51 and the fourth wall portion 31.

[0145] Exemplarily, the fifth wall portion 32 may be detachably connected to the fourth wall portion 31, or may be integrally provided on the fourth wall portion 31. The fifth wall portion 32 may be directly connected to the fourth wall portion 31, or may be restricted to the fourth wall portion 31 by other components. As an example, the connection method between the fifth wall portion 32 and the fourth wall portion 31 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding, etc.

[0146] The sixth wall portion 33 may be detachably connected to the fourth wall portion 31, or may be integrally provided on the fourth wall portion 31. The sixth wall portion 33 may be directly connected to the fourth wall portion 31, or may be restricted to the fourth wall portion 31 by other components. As an example, the connection method between the sixth wall portion 33 and the fourth wall portion 31 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0147] Optionally, the fourth wall portion 31, the fifth wall portion 32 and the sixth wall portion 33 may be made of, but are not limited to, metal or non-metal materials. For example, the metal material may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metal material may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0148] The fourth wall portion 31, the fifth wall portion 32 and the sixth wall portion 33 may be made of the same material or different materials. As an example, the fourth wall portion 31, the fifth wall portion 32 and the sixth wall portion 33 are made of the same material, which can simplify the preparation process and reduce costs.

[0149] In some examples, the fourth wall portion 31, the fifth wall portion 32 and the sixth wall portion 33 are integrally formed. On the one hand, there is no need to connect the fourth wall portion 31, the fifth wall portion 32 and the sixth wall portion 33 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the fourth wall portion 31, the fifth wall portion 32 and the sixth wall portion 33 through an additional connection process, the fourth wall portion 31, the fifth wall portion 32 and the sixth wall portion 33 in an integral structure have a higher connection firmness.

[0150] The plane where the fifth wall portion 32 is located intersects with the plane where the fourth wall portion 31 is located, which can be understood as the fifth wall portion 32 is bent relative to the fourth wall portion 31. The plane where the sixth wall portion 33 is located intersects with the plane where the fourth wall portion 31 is located, which can be understood as the sixth wall portion 33 is bent relative to the fourth wall portion 31. In other words, the fifth wall portion 32 protrudes from one side surface of the fourth wall portion 31 along its own thickness direction, and the sixth wall portion 33 protrudes from one side surface of the fourth wall portion 31 along its own thickness direction. Exemplarily, the fifth wall portion 32 and the sixth wall portion 33 may be protruding from the same side of the fourth wall portion 31 along its own thickness direction, or the fifth wall portion 32 and the sixth wall portion 33 may be protruding from opposite sides of the fourth wall portion 31 along its own thickness direction.

[0151] It should be noted that the fourth wall portion 31 of the second beam 40 corresponds to the first wall portion 51 of the first beam 30 , the fifth wall portion 32 of the second beam 40 corresponds to the second wall portion 52 of the first beam 30 , and the sixth wall portion 33 of the second beam 40 corresponds to the third wall portion 53 of the first beam 30 .

[0152] In some examples, the fourth wall portion 31 of the second beam 40 is connected to the first wall portion 51 of the first beam 30 , the fifth wall portion 32 of the second beam 40 is connected to the second wall portion 52 of the first beam 30 , and the sixth wall portion 33 of the second beam 40 is connected to the third wall portion 53 of the first beam 30 .

[0153] In some examples, at least one of the fifth wall portion 32 and the sixth wall portion 33 is provided with a loading point, and the loading point is used to provide a connection environment for related components in the battery device. The related components in the battery device may be, but are not limited to, connectors, interfaces, or sensors.

[0154] In some examples, the first wall portion 51 , the second wall portion 52 , the third wall portion 53 , the fourth wall portion 31 , the fifth wall portion 32 , and the sixth wall portion 33 are all plate-like structures.

[0155] The above technical solution can not only effectively improve the structural strength of the second beam 40 itself, but also further improve the convenience of setting the relevant components in the battery device. In addition, since the fourth wall portion 31 is connected between the fifth wall portion 32 and the sixth wall portion 33, the first side member 60 connects the first wall portion 51 and the fourth wall portion 31, which can improve the uniformity of the force of the first side member 60.

[0156] In some embodiments, the first bridging member 60 and the fourth wall portion 31 at least partially overlap along the first direction X.

[0157] In some embodiments, a first groove 500 is formed between the first bridging member 60 and the first wall portion 51 , and a portion of the fourth wall portion 31 is accommodated in the second groove.

[0158] In some embodiments, the first overlapping member 60 is welded to the fourth wall portion 31 .

[0159] In some embodiments, a first angle a is formed between the first beam 30 and the connecting beam 50 , and the first bridge member 60 is bent relative to the first wall portion 51 toward the first beam 30 and forms the first angle a with the first wall portion 51 .

[0160] In some embodiments, the first overlapping member 60 is overlapped on one side of the fourth wall portion 31 along its thickness direction.

[0161] In some embodiments, the first overlapping member 60 is overlapped on a side of the fourth wall portion 31 facing away from the accommodating space.

[0162] In some embodiments, a first groove 300 matching with the first overlapping member 60 is formed on the fourth wall portion 31 , and the first overlapping member 60 is inserted into the first groove 300 .

[0163] In some embodiments, the frame 21 further includes a second bridging member 70 , which connects the second wall portion 52 and the fifth wall portion 32 , and the second bridging member 70 and the fifth wall portion 32 at least partially overlap in the third direction Z.

[0164] Exemplarily, the second lap member 70 may be directly connected to the second wall portion 52 and the fifth wall portion 32, or may be restricted on the second wall portion 52 and the fifth wall portion 32 by other components. As an example, the connection method between the second lap member 70 and the second wall portion 52 and the connection method between the second lap member 70 and the fifth wall portion 32 may be, but are not limited to, bolt connection, welding, riveting, clamping or bonding.

[0165] In some examples, the second wall portion 52 and the second side member 70 are integrally formed. On the one hand, there is no need to connect the second wall portion 52 and the second side member 70 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the second wall portion 52 and the second side member 70 through an additional connection process, the second wall portion 52 and the second side member 70 in an integral structure have a higher connection firmness.

[0166] The second lap member 70 at least partially overlaps with the fifth wall portion 32 in the third direction Z. It can be understood that the entire second lap member 70 overlaps with the entire fifth wall portion 32 in the third direction Z, or a portion of the second lap member 70 overlaps with a portion of the fifth wall portion 32 in the third direction Z.

[0167] Optionally, the second bridging member 70 may be, but is not limited to, a plate-like structure, a block-like structure, or a columnar structure.

[0168] The above technical solution further provides a second bridging member 70 , which can increase the connection firmness between the second wall portion 52 and the fifth wall portion 32 , so as to further improve the structural strength of the frame 21 , thereby further improving the reliability of the battery device.

[0169] In some embodiments, the second edging member 70 is connected to the first edging member 60 , which can further improve the overall structural strength of the frame 21 .

[0170] For example, the second bridging member 70 may be directly connected to the first bridging member 60 , or may be restricted on the first bridging member 60 through other components.

[0171] In some embodiments, a second groove is formed between the second bridging member 70 and the second wall portion 52 , and a portion of the fifth wall portion 32 is accommodated in the second groove.

[0172] In some embodiments, the second overlapping member 70 is welded to the fifth wall portion 32 .

[0173] In some embodiments, a first angle a is formed between the first beam 30 and the connecting beam 50 , and the second bridge member 70 is bent relative to the second wall portion 52 toward the first beam 30 and forms the first angle a with the second wall portion 52 .

[0174] In some embodiments, the second bridge piece 70 and the second wall portion 52 at least partially overlap in the thickness direction of the second wall portion 52 .

[0175] In some embodiments, the second overlapping piece 70 is overlapped on one side of the fifth wall portion 32 along its thickness direction.

[0176] In some embodiments, the second overlapping member 70 is overlapped on a side of the fifth wall portion 32 facing away from the accommodating space.

[0177] In some embodiments, a second groove matching the second overlapping member 70 is formed on the fifth wall portion 32 , and the second overlapping member 70 is inserted into the second groove.

[0178] It can be understood that the second side member 70 of the embodiment of the present application has the same structural principle as the first side member 60 provided in the embodiment of the present application. The specific details of the second side member 70 can refer to the description of the corresponding parts of the first side member 60 described in the above embodiment of the present application. All the structures described in the first side member 60 can be applied to the second side member 70. For the sake of brevity, they will not be repeated here.

[0179] In some embodiments, the frame 21 further includes a third bridging member 80 , which connects the third wall portion 53 and the sixth wall portion 33 , and the third bridging member 80 and the sixth wall portion 33 at least partially overlap in the third direction Z.

[0180] Exemplarily, the third lap member 80 may be directly connected to the third wall portion 53 and the sixth wall portion 33, or may be restricted to the third wall portion 53 and the sixth wall portion 33 by other components. As an example, the connection method between the third lap member 80 and the third wall portion 53 and the connection method between the third lap member 80 and the sixth wall portion 33 may be, but not limited to, bolt connection, welding, riveting, clamping or bonding.

[0181] In some examples, the third wall portion 53 and the third side member 80 are integrally formed. On the one hand, there is no need to connect the third wall portion 53 and the third side member 80 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the third wall portion 53 and the third side member 80 through an additional connection process, the third wall portion 53 and the third side member 80 in an integral structure have a higher connection firmness.

[0182] The third lap member 80 at least partially overlaps with the sixth wall portion 33 in the third direction Z. It can be understood that the entire third lap member 80 overlaps with the entire sixth wall portion 33 in the third direction Z, or a portion of the third lap member 80 overlaps with a portion of the sixth wall portion 33 in the third direction Z.

[0183] Optionally, the third edging member 80 may be, but is not limited to, a plate-like structure, a block-like structure, or a columnar structure.

[0184] The above technical solution further provides a third bridging member 80 , which can increase the connection firmness between the third wall portion 53 and the sixth wall portion 33 , so as to further improve the structural strength of the frame 21 , thereby further improving the reliability of the battery device.

[0185] In some embodiments, the third edging member 80 is connected to the first edging member 60 , which can further improve the overall structural strength of the frame 21 .

[0186] For example, the third bridging member 80 may be directly connected to the first bridging member 60 , or may be restricted on the first bridging member 60 through other components.

[0187] In some embodiments, a third groove is formed between the third bridging member 80 and the third wall portion 53 , and a portion of the sixth wall portion 33 is accommodated in the third groove.

[0188] In some embodiments, the third bridging member 80 is welded to the sixth wall portion 33 .

[0189] In some embodiments, a first angle a is formed between the first beam 30 and the connecting beam 50 , and the third bridge piece 80 is bent relative to the third wall portion 53 toward the first beam 30 and forms the first angle a with the third wall portion 53 .

[0190] In some embodiments, the third edging member 80 and the third wall portion 53 at least partially overlap in the thickness direction of the third wall portion 53 .

[0191] In some embodiments, the third overlapping piece 80 is overlapped on one side of the sixth wall portion 33 along its thickness direction.

[0192] In some embodiments, the third overlapping piece 80 is overlapped on a side of the sixth wall portion 33 facing away from the accommodating space.

[0193] In some embodiments, a third groove matching the third bridging member 80 is formed on the fifth and sixth wall portions, and the third bridging member 80 is inserted into the third groove.

[0194] It can be understood that the third side member 80 of the embodiment of the present application has the same structural principle as the first side member 60 provided in the embodiment of the present application. The specific details of the third side member 80 can refer to the description of the corresponding parts of the first side member 60 described in the above embodiment of the present application. All the structures described in the first side member 60 can be applied to the third side member 80. For the sake of brevity, they will not be repeated here.

[0195] In some embodiments, the first bridge member 60 and the connecting beam 50 are an integrally formed structure.

[0196] On the one hand, there is no need to connect the first lap member 60 and the connecting beam 50 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the first lap member 60 and the connecting beam 50 through an additional connection process, the first lap member 60 and the connecting beam 50 in an integrated structure have a higher connection firmness.

[0197] In some embodiments, the first bridging member 60 , the second bridging member 70 , the third bridging member 80 and the connecting beam 50 are an integrally formed structure.

[0198] In some embodiments, at least one of the connecting beam 50 , the first beam 30 , and the second beam 40 is a single-layer plate structure, which can simplify the structural complexity of the frame 21 and help reduce the overall manufacturing cost of the battery device.

[0199] In some embodiments, the first beam 30 and the connecting beam 50 are an integrally formed structure, which not only simplifies the manufacturing process, but also improves the connection firmness between the first beam 30 and the connecting beam 50 .

[0200] In some embodiments, the second beam 40 and the connecting beam 50 are an integrally formed structure, which not only simplifies the manufacturing process, but also improves the connection firmness between the second beam 40 and the connecting beam 50 .

[0201] In some embodiments, the first beam 30 is welded to the connecting beam 50. Welding has low cost and high reliability, so it is possible to improve the connection strength between the first beam 30 and the connecting beam 50 while reducing the cost.

[0202] In some embodiments, the frame 21 further includes a fourth bridging member, which connects the connecting beam 50 and the second beam 40 , and the fourth bridging member and the second beam 40 at least partially overlap in the second direction Y.

[0203] It can be understood that the connection relationship and the connection structure between the connecting beam 50 and the second beam 40 of the embodiment of the present application can have the same structural principle as the connection relationship and the connection structure between the connecting beam 50 and the first beam 30 provided in the embodiment of the present application. Please refer to the above content. For the sake of brevity, it will not be repeated here.

[0204] The structural features of the first beam 30 described above can all be applied to the second beam 40 , and the connection relationship and connection structure between the first beam 30 and the connection beam 50 described above can also be applied to the second beam 40 .

[0205] According to some embodiments of the present application, the present application also provides an electrical device, including a battery device according to any of the above schemes, and the battery device is used to store or provide electrical energy.

[0206] If not otherwise specified, all implementations and optional implementations of the present application can be combined with each other to form a new technical solution. All technical features and optional technical features of the present application can be combined with each other to form a new technical solution.

[0207] In order to better understand the battery device provided in the embodiment of the present application, based on the same inventive concept, an embodiment of the above-mentioned battery device in practical application is provided here for illustration.

[0208] The embodiment of the present application provides a battery device, which includes a battery cell 10 and a box 20. The box 20 includes a storage space and a frame 21 arranged along the periphery of the storage space. The battery cell 10 is accommodated in the storage space. The frame 21 includes two first beams 30 and two second beams 40. The two first beams 30 are arranged opposite to each other along a first direction X, and the two second beams 40 are arranged opposite to each other along a second direction Y. The first direction X intersects with the second direction Y. The frame 21 also includes at least one connecting beam 50, and the connecting beam 50 is connected between adjacent first beams 30 and second beams 40. The frame 21 also includes a first lap part 60, and the first lap part 60 connects the connecting beam 50 and the first beam 30. The first lap part 60 and the first beam 30 at least partially overlap in the first direction X.

[0209] The above technical solution sets a first bridging member 60, which can increase the contact area between the connecting beam 50 and the first beam 30. When the battery device is collided or shaken, the first bridging member 60 can bear part of the force, so that the frame 21 can resist higher strength loads, thereby effectively improving the reliability of the battery device.

[0210] 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: include: Battery cells; A box body, comprising a containing space and a frame arranged along the periphery of the containing space, wherein the battery cell is contained in the containing space, wherein the frame comprises two first beams and two second beams, wherein the two first beams are arranged opposite to each other along a first direction, and the two second beams are arranged opposite to each other along a second direction, and the first direction intersects with the second direction; The frame further includes at least one connecting beam, wherein the connecting beam is connected between adjacent first beams and second beams; The frame further includes a first lap part, the first lap part connects the connecting beam and the first beam, and the first lap part and the first beam at least partially overlap in the first direction.

2. The battery device according to claim 1, characterized in that: A first groove is formed between the first bridging member and the connecting beam, and a portion of the first beam is accommodated in the first groove.

3. The battery device according to claim 1, characterized in that: The first overlapping member is welded to the first beam.

4. The battery device according to claim 1, characterized in that: A first angle is formed between the connecting beam and the first beam. The first lap part is bent relative to the connecting beam in a direction close to the first beam and forms the first angle with the connecting beam.

5. The battery device according to claim 1, characterized in that: The first bridging member and the connecting beam at least partially overlap in a thickness direction of the connecting beam.

6. The battery device according to claim 1, characterized in that: The first overlapping piece is overlapped on one side of the first beam along its thickness direction.

7. The battery device according to claim 1, characterized in that: The first beam is provided with a first groove matching the first overlapping member, and the first overlapping member is inserted into the first groove.

8. The battery device according to claim 1, characterized in that: The connecting beam includes a first wall portion, a second wall portion and a third wall portion, the first wall portion is connected between the second wall portion and the third wall portion, the second wall portion and the third wall portion are arranged opposite to each other along a third direction, the plane where the second wall portion is located intersects with the plane where the first wall portion is located, the plane where the third wall portion is located intersects with the plane where the first wall portion is located, the first overlapping member connects the first wall portion and the first beam, and the first direction, the second direction and the third direction are perpendicular to each other.

9. The battery device according to claim 8, characterized in that: The second wall portion protrudes from a side of the first wall portion facing away from the accommodating space; and / or, The third wall portion protrudes from a side of the first wall portion facing away from the accommodating space.

10. The battery device according to claim 8, characterized in that: The first beam includes a fourth wall portion, a fifth wall portion and a sixth wall portion, the fourth wall portion is connected between the fifth wall portion and the sixth wall portion, the fifth wall portion and the sixth wall portion are arranged opposite to each other along the third direction, the plane where the fifth wall portion is located intersects with the plane where the fourth wall portion is located, the plane where the sixth wall portion is located intersects with the plane where the fourth wall portion is located, and the first overlapping member connects the first wall portion and the fourth wall portion.

11. The battery device according to claim 10, characterized in that: The frame further includes a second edging member, the second edging member connects the second wall portion and the fifth wall portion, and the second edging member and the fifth wall portion at least partially overlap in the third direction; and / or, The frame further includes a third edging member, wherein the third edging member connects the third wall portion and the sixth wall portion, and the third edging member and the sixth wall portion at least partially overlap in the third direction.

12. The battery device according to claim 1, characterized in that: The first bridging member and the connecting beam are an integrally formed structure.

13. The battery device according to claim 1, characterized in that: At least one of the connecting beam, the first beam, and the second beam is a single-layer plate structure.

14. The battery device according to claim 1, characterized in that: The first beam and the connecting beam are an integrally formed structure; and / or, The second beam and the connecting beam are an integrally formed structure.

15. The battery device according to any one of claims 1 to 14, characterized in that: The first beam is welded to the connecting beam.

16. An electrical device, characterized in that: The invention comprises a battery device as described in any one of claims 1 to 15, wherein the battery device is used to store or provide electrical energy.

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