Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device. The battery device comprises a box body, a heat exchange component and a first reinforcing component, the box body is provided with a containing cavity, the box body comprises a frame, the frame surrounds the containing cavity, and the frame comprises a first beam. The heat exchange component is arranged in the containing cavity and connected to the first beam. The first reinforcing part is arranged in the containing cavity and located at the included angle between the heat exchange part and the first beam, and the first reinforcing part is connected with the first beam and the heat exchange part. According to the invention, the reliability of the battery device can be effectively improved.

Description

TECHNICAL FIELD

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

[0002] With the development of new energy technology, batteries are increasingly widely used, for example, in mobile phones, notebook computers, electric cars, electric vehicles, electric aircraft, electric ships, electric toy cars, electric toy ships, electric toy aircraft and electric tools.

[0003] In the development of battery technology, how to improve the reliability of the battery device is a continuous research direction in the battery technology. CONTENT OF THE INVENTION

[0004] In view of the above problems, the present application provides a battery device and a power consumption 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 comprising a box body, a heat exchange component and a first reinforcing component, the box body having a containing cavity, the box body comprising a frame, the frame being arranged around the containing cavity, the frame comprising a first beam. The heat exchange component is arranged in the containing cavity and connected to the first beam. The first reinforcing component is arranged in the containing cavity and located at an included angle between the heat exchange component and the first beam, and the first reinforcing component connects the first beam and the heat exchange component.

[0006] The first reinforcing component can improve the overall connection strength between the first beam and the heat exchange component. When the battery device is subjected to external impact, the first reinforcing component can share a part of the impact force to reduce the stress on the connection part of the first beam and the heat exchange component, thereby reducing the risk of connection failure of the heat exchange component and the first beam and effectively improving the reliability of the battery device.

[0007] In some embodiments of the first aspect, the first reinforcing component comprises a first part and a second part, the first part is connected to the first beam, the second part is connected to one end of the first part close to the heat exchange component and is bent away from the first beam relative to the first part, and the second part is connected to the heat exchange component.

[0008] The above technical solution not only reduces the difficulty of setting the first reinforcing component, but also optimizes the overall stress path of the first reinforcing component, so that the first reinforcing component has a certain elastic buffering capacity and has an energy absorption and buffering effect in the case of impact, thereby reducing local stress concentration and further reducing the risk of connection failure of the heat exchange component and the first beam.

[0009] In some embodiments of the first aspect, one side surface of the first part facing the first beam is connected to the first beam in a manner of surface fitting; and / or, one side surface of the second part facing the heat exchange component is connected to the heat exchange component in a manner of surface fitting.

[0010] The contact area between the first reinforcing component and the first beam and the contact area between the first reinforcing component and the heat exchange component can be increased, thereby improving the connection strength between the first reinforcing component and the first beam and enhancing the structural reliability of the first reinforcing component.

[0011] In some embodiments of the first aspect, the first reinforcing component further comprises a third portion connected to one end of the second portion away from the first portion and bent in a direction away from the heat exchange component relative to the second portion.

[0012] By introducing the third portion, on the one hand, the structural strength of the first reinforcing component as a whole can be further improved, and the load borne by the first reinforcing component can be better distributed; on the other hand, the third portion can also serve as a handle structure for easy grasping and operation during assembly of the first reinforcing component, making manual or automated equipment more stable and efficient during handling, positioning and assembly, and effectively reducing the assembly difficulty of the first reinforcing component.

[0013] In some embodiments of the first aspect, a side surface of the third portion facing away from the first portion is perpendicular to a side surface of the heat exchange component facing the second portion. The consistency of the internal structure of the box body can be improved to reduce the design and assembly difficulty of the battery device as a whole.

[0014] In some embodiments of the first aspect, the second portion is bonded to the heat exchange component.

[0015] By bonding the second portion to the heat exchange component, the bonding layer can achieve uniform stress distribution, effectively reducing the risk of local stress concentration of the first reinforcing component and the heat exchange component caused by impact, vibration or thermal cycling. In addition, bonding does not require drilling or machining mounting slots on the heat exchange component, avoiding the problem of damaging the heat exchange component or reducing the heat exchange efficiency, and is conducive to maintaining the original performance of the heat exchange component.

[0016] In some embodiments of the first aspect, the frame comprises two first beams, a second beam and a third beam, the two first beams are oppositely arranged along a first direction, the second beam and the third beam are oppositely arranged along a second direction, the first beam is connected between the second beam and the third beam, and the first direction intersects the second direction. The second beam and the third beam are arranged in parallel, a first included angle between the first beam and the second beam towards the accommodating cavity is less than 90°, and a second included angle between the first beam and the third beam towards the accommodating cavity is greater than 90°.

[0017] By the above structure, the frame can form a trapezoidal structure. On one hand, the frame in the trapezoidal structure can improve the stability and deformation resistance of the structure, reduce the risk of deformation of the frame under stress, and further improve the reliability of the battery device. On the other hand, by adjusting the angle values of the first and second angles, the overall size of the frame can be flexibly changed, thereby facilitating the customization of the battery device and enhancing the product competitiveness. In addition, since the first beam is inclined relative to the second and third beams, the ends of the first and second beams and the end of the third beam can form a certain redundant space. Therefore, in this embodiment, the first reinforcing component can utilize this space, thereby improving the utilization efficiency of the internal space of the battery device.

[0018] In some embodiments of the first aspect, the first reinforcing component and the third beam are spaced apart in the same plane perpendicular to the second direction.

[0019] The first reinforcing component is completely located in the redundant space formed by the ends of the first and second beams and the end of the third beam, thereby further reducing the influence of the first reinforcing component on the arrangement of the battery cells in the accommodation cavity, and helping to improve the energy density of the battery device.

[0020] In some embodiments of the first aspect, the battery device further comprises a second reinforcing component, which is arranged in the accommodation cavity and located at the angle between the heat exchange component and the first beam, and the second reinforcing component connects the first beam and the heat exchange component. The first beam is located on one side of the accommodation cavity along the first direction, and the first beam is arranged to extend along the second direction, and the first direction intersects the second direction. The first reinforcing component and the second reinforcing component are spaced apart along the second direction, and the second reinforcing component is closer to the end of the first beam along the second direction relative to the first reinforcing component.

[0021] The above technical solution introduces a second reinforcing component, and the cooperation of the second reinforcing component and the first reinforcing component can further improve the structural stability between the first beam and the heat exchange component.

[0022] In some embodiments of the first aspect, the second reinforcing component comprises a second main body part, which comprises a fourth part, a fifth part and a sixth part, and the fourth part is connected to the first beam. The fifth part is connected to one end of the fourth part close to the heat exchange component and is bent relative to the fourth part in a direction away from the first beam. The sixth part is connected to one end of the fifth part away from the fourth part and is bent relative to the fifth part in a direction away from the first beam, and the sixth part is connected to the heat exchange component.

[0023] The technical solution has the advantages that the second reinforcing component can be set with reduced difficulty, and the overall stress path of the second reinforcing component can be optimized, so that the second reinforcing component has a certain elastic buffering capacity, and has an energy absorption and buffering effect in the case of impact, so as to reduce local stress concentration, thereby further reducing the risk of connection failure of the heat exchange component and the first beam.

[0024] In some embodiments of the first aspect, the second reinforcing component further comprises a second connecting portion connected to an end portion of the second main body portion in the second direction.

[0025] By introducing the second connecting portion, the structural strength of the second main body portion as a whole can be enhanced, thereby improving the reliability of the second reinforcing component.

[0026] In some embodiments of the first aspect, the heat exchange component and the first beam are connected by friction stir welding.

[0027] By using friction stir welding to connect the heat exchange component and the tank, the risk of pore formation in the weld can be reduced to improve the air tightness and pressure resistance. In addition, the joint strength of friction stir welding is high and the deformation is small, which can significantly improve the connection reliability between the heat exchange component and the first beam, and reduce the failure risk under long-term vibration, thermal cycling and external impact conditions.

[0028] In a second aspect, the application provides an electric device, which comprises the battery device provided in any one of the embodiments of the first aspect, and the battery device is used for storing or providing electric energy.

[0029] The above description is only a summary of the technical solutions of the application. In order to enable the technical means of the application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the application to be more apparent and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the scope of the application. Moreover, the same reference numerals in the attached drawings indicate the same or similar elements. In the drawings:

[0031] Figure 1 A structural schematic diagram of a vehicle provided by some embodiments of the application;

[0032] Figure 2 An exploded structural schematic diagram of a battery device provided by some embodiments of the application;

[0033] Figure 3A partial plan view of a battery device according to some embodiments of the present application;

[0034] Figure 4 A partial plan view of a battery device according to some embodiments of the present application; Figure 3 A cross-sectional view along A-A;

[0035] Figure 5 A partial plan view of a battery device according to some embodiments of the present application; Figure 4 A partial enlarged view of M in FIG. 8;

[0036] Figure 6 A perspective view of a first reinforcing member of a battery device according to some embodiments of the present application;

[0037] Figure 7 A partial plan view of another battery device according to some embodiments of the present application;

[0038] Figure 8 A cross-sectional view along B-B; Figure 7

[0039] Figure 9 A partial enlarged view of N in FIG. 9; Figure 8

[0040] Figure 10 A perspective view of a second reinforcing member of a battery device according to some embodiments of the present application.

[0041] Reference Signs in the Detailed Description of Embodiments

[0042] 1 vehicle; 2 battery device; 3 controller; 4 motor;

[0043] 10 case; 11 accommodation cavity; 12 frame; 121 first beam; 122 second beam; 123 third beam;

[0044] 20 heat exchange member;

[0045] 30 first reinforcing member; 31 first portion; 32 second portion; 33 third portion;

[0046] 40 second reinforcing member; 41 second main portion; 411 fourth portion; 412 fifth portion; 413 sixth portion; 42 second connecting portion;

[0047] 50 battery cell;

[0048] S reference line;

[0049] X first direction; Y second direction; Z third direction. DETAILED DESCRIPTION ​​

[0050] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the drawings in the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0051] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, not to describe a particular order or primary and secondary relationship.

[0052] In the present application, the phrase "embodiment" means that the specific features, structures or properties described in combination with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments.

[0053] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0055] In the embodiments of the present application, the same reference signs represent the same components, and for the sake of brevity, detailed description of the same components is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length and width of the integrated device, are only exemplary and should not constitute any limitation on the present application.

[0056] The "multiple" appearing in the present application refers to two or more (including two).

[0057] The term "parallel" in the present application not only includes the case of absolute parallel, but also includes the case of approximate parallel as generally recognized in engineering; at the same time, "vertical" also not only includes the case of absolute vertical, but also includes the case of approximate vertical as generally recognized in engineering.

[0058] With the development of new energy technology, the application of batteries is becoming more and more widespread, such as being applied to mobile phones, notebook computers, electric cars, electric vehicles, electric aircraft, electric ships, electric toy cars, electric toy ships, electric toy aircraft and electric tools, etc.

[0059] In the development of battery technology, how to improve the reliability of the battery device is a continuous direction in the battery technology.

[0060] The battery device usually includes a box body and a heat exchange component, and the heat exchange component is connected to the box body. In the related technology, the connection part of the heat exchange component and the box body is not designed to be strengthened, and when the battery device is subjected to external impact, the connection part of the heat exchange component and the box body is easy to crack and fail, thereby seriously affecting the reliability of the battery device.

[0061] Based on the above consideration, the present application designs a battery device, which includes a box body, a heat exchange component and a first reinforcing component. The box body has an accommodation cavity, and the box body includes a frame, which is arranged around the accommodation cavity and includes a first beam. The heat exchange component is arranged in the accommodation cavity and connected to the first beam. The first reinforcing component is arranged in the accommodation cavity and located at the included angle between the heat exchange component and the first beam, and the first reinforcing component connects the first beam and the heat exchange component.

[0062] The first reinforcing component can improve the overall connection strength between the first beam and the heat exchange component. When the battery device is subjected to external impact, the first reinforcing component can share a part of the impact force to reduce the stress on the connection part of the first beam and the heat exchange component, thereby reducing the risk of connection failure of the heat exchange component and the first beam, and effectively improving the reliability of the battery device.

[0063] The battery monomer described in the embodiments of the present application is suitable for a battery device and a power consumption equipment using the battery device. The power consumption equipment can be a device using the battery device as a power supply or a variety of energy storage systems using the battery device as an energy storage element. The power consumption equipment can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric car, an electric vehicle, a ship, a spacecraft, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric aircraft toys, etc. The spacecraft can include airplanes, rockets, space shuttles and spacecraft, etc.

[0064] The following embodiments are described by taking the vehicle as an example for convenience of illustration.

[0065] Figure 1 A structural schematic diagram of a vehicle provided by some embodiments of the present application.

[0066] As shown in Figure 1 , the interior of the vehicle 1 is provided with a battery device 2, which can be arranged at the bottom, head or tail of the vehicle 1. The battery device 2 can be used for power supply of the vehicle 1, for example, the battery device 2 can be used as the operating power supply of the vehicle 1.

[0067] The vehicle 1 can also include a controller 3 and a motor 4, the controller 3 being used to control the battery device 2 to supply power to the motor 4, for example, for the power demand of the vehicle 1 during starting, navigation and driving.

[0068] In some embodiments of the present application, the battery device 2 can not only be used as the operating power supply of the vehicle 1, but also be used as the driving power supply of the vehicle 1, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1.

[0069] In some embodiments, the battery device 2 can be an energy storage device.

[0070] The energy storage device can be used in energy storage power stations, wind power systems, solar power systems, mobile power systems or temporary power supply systems, etc. The energy storage device can store electrical energy as needed and output electrical energy at appropriate times. For example, the energy storage device can store electrical energy during low electricity consumption, and provide electrical energy for related users or electrical equipment during peak electricity consumption.

[0071] In some embodiments, the energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0072] Figure 2 An explosion structural schematic diagram of a battery device provided by some embodiments of the present application, Figure 3 A partial top view structural schematic diagram of a battery device provided by some embodiments of the present application, Figure 4 is Figure 3 A sectional structural schematic diagram along A-A, Figure 5 is Figure 4 A partial enlarged structural schematic diagram at M;

[0073] Continuing to refer to Figures 2 to 5The battery device 2 provided by the embodiments of the present application comprises a box body 10, a heat exchange component 20, and a first reinforcing component 30. The box body 10 has a containing cavity 11. The box body 10 comprises a frame 12, which is arranged around the containing cavity 11 and comprises a first beam 121. The heat exchange component 20 is arranged in the containing cavity 11 and connected to the first beam 121. The first reinforcing component 30 is arranged in the containing cavity 11 and located at an included angle between the heat exchange component 20 and the first beam 121. The first reinforcing component 30 connects the first beam 121 and the heat exchange component 20.

[0074] As an example, the battery device 2 comprises a plurality of battery cells 50, which are contained in the containing cavity 11.

[0075] The battery device 2 provided by the embodiments of the present application can comprise one or more battery cell 50 assemblies for providing voltage and capacity. The battery cell 50 assembly can comprise a plurality of battery cells 50 connected in series, in parallel, or in a mixed connection through a busbar component.

[0076] As an example, the battery cell 50 assembly is usually formed by arranging a plurality of battery cells 50.

[0077] As an example, the battery cell 50 can be a lithium ion battery cell 50, a sodium ion battery cell 50, a sodium lithium ion battery cell 50, a lithium metal battery cell 50, a sodium metal battery cell 50, a lithium sulfur battery cell 50, a magnesium ion battery cell 50, a nickel-hydrogen battery cell 50, a nickel-cadmium battery cell 50, a lead-acid battery cell 50, etc.

[0078] As an example, the battery cell 50 assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells 50 into an independent module. As an example, the battery module can be formed by binding a plurality of battery cells 50 with a cable tie.

[0079] As an example, the battery device 2 can be a battery pack, which comprises a box body 10 and one or more battery cell 50 assemblies contained in the box body 10.

[0080] As an example, the battery cell 50 assembly can be a battery module, which can be contained in the box body 10 by fixing the battery module in the box body 10.

[0081] As an example, the battery cell 50 assembly can also be contained in the box body 10 by directly fixing a plurality of battery cells 50 in the box body 10.

[0082] As an example, the box 10 can include a first box portion and a second box portion. The first box portion and the second box portion are fastened so that an enclosed space is formed inside the box 10 to accommodate the battery cell 50 assembly. The enclosed here means covered or closed, which can be sealed or unsealed. The first box portion can be a top cover or a bottom plate.

[0083] As an example, the box 10 can include a top cover, a frame 12, and a bottom plate. The top cover and the bottom plate are respectively connected with the frame 12 so that an enclosed space is formed inside the box 10 to accommodate the battery cell 50 assembly.

[0084] As an example, the box 10 can be part of the chassis structure of the vehicle. For example, part of the box 10 can be at least part of the floor of the vehicle, or part of the box 10 can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0085] As an example, the heat exchange component 20 can be thermally connected (e.g., attached) to at least part of the battery cell 50, and the heat exchange medium flows in the heat exchange body and exchanges heat with the battery cell 50 through the side wall of the heat exchange body. When the temperature of the battery cell 50 is too high, the heat exchange component 20 can cool the battery cell 50; when the temperature of the battery cell 50 is too low, the heat exchange component 20 can keep the battery cell 50 warm to improve the service life of the battery cell 50.

[0086] As an example, the heat exchange component 20 has a medium flow channel inside, which is used to accommodate the heat exchange medium.

[0087] The medium flow channel inside the heat exchange component 20 can extend along a straight line or a curve, which can be selected according to the actual application environment.

[0088] In some examples, the heat exchange component 20 is in contact with the side wall of the battery cell 50 with the largest area to improve the heat exchange efficiency of the battery.

[0089] Optionally, the heat exchange medium can be a liquid, which can be but is not limited to water, ethylene glycol, and a mixture of water and ethylene glycol.

[0090] The heat exchange component 20 can be fixed to the box 10 or detachably connected to the box 10. The heat exchange component 20 can be directly connected with the box 10 or limited on the box 10 by other components. As an example, the connection mode of the heat exchange component 20 with the box 10 can be but is not limited to welding, bolt connection, plug-in connection, or adhesion, etc.

[0091] The heat exchange component 20 can quickly conduct the heat generated by the battery cell 50 to the box 10 or the external cooling structure, reduce heat accumulation, and reduce the risk of thermal runaway caused by local temperature rise.

[0092] As an example, the heat exchange component 20 can be a plate-like structure, for example, a heat exchange plate.

[0093] In some embodiments, the box 10 comprises a bottom plate connected to one side of the frame 12 along the third direction Z, the battery cell 50 is carried on the bottom plate, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other. The heat exchange component 20 is arranged between the battery cell 50 and the bottom plate.

[0094] The first reinforcing component 30 is located at the included angle between the heat exchange component 20 and the first beam 121. Wherein, the included angle between the heat exchange component 20 and the first beam 121 can also be understood as the position where the connecting part of the heat exchange component 20 and the first beam 121 is located.

[0095] The first reinforcing component 30 connects the first beam 121 and the heat exchange component 20. In other words, one part of the first reinforcing component 30 is connected to the first beam 121, and the other part of the first reinforcing component 30 is connected to the heat exchange component 20.

[0096] The first reinforcing component 30 can be fixed on the first beam 121, or can be detachably connected to the first beam 121. The first reinforcing component 30 can be directly connected to the first beam 121, or can be limited on the first beam 121 by other components. As an example, the connection mode of the first reinforcing component 30 and the first beam 121 can be but not limited to welding, bolt connection, plug-in or adhesion, etc.

[0097] The first reinforcing component 30 can be fixed on the heat exchange component 20, or can be detachably connected to the heat exchange component 20. The first reinforcing component 30 can be directly connected to the heat exchange component 20, or can be limited on the heat exchange component 20 by other components. As an example, the connection mode of the first reinforcing component 30 and the heat exchange component 20 can be but not limited to welding, bolt connection, plug-in or adhesion, etc.

[0098] Optionally, the first reinforcing component 30 can be but not limited to a plate-like structure, a block-like structure or a columnar structure, etc.

[0099] Optionally, the shape of the first reinforcing component 30 can be but not limited to a triangular plate body, an L-shaped plate body or an arc-shaped plate body, so as to form a force transmission path.

[0100] Optionally, the material of the first reinforcing component 30 can be selected from stainless steel or aluminum alloy, etc., and can be processed into a shape by stamping, bending or casting, etc.

[0101] The first reinforcing component 30 can form a multi-path stress system between the first beam 121 and the heat exchange component 20. When the battery device 2 is subjected to external impact, the first reinforcing component 30 can share a part of the impact force, so that the connection between the first beam 121 and the heat exchange component 20 no longer relies on the single connection part to resist the impact force, thereby reducing the risk of local stress concentration at the direct connection between the first beam 121 and the heat exchange component 20, and reducing the risk of connection failure between the heat exchange component 20 and the first beam 121.

[0102] In this way, the first reinforcing component 30 can improve the overall connection strength between the first beam 121 and the heat exchange component 20. When the battery device 2 is subjected to external impact, the first reinforcing component 30 can share a part of the impact force, so as to reduce the stress on the connection part between the first beam 121 and the heat exchange component 20, thereby reducing the risk of connection failure between the heat exchange component 20 and the first beam 121, and effectively improving the reliability of the battery device 2.

[0103] In some embodiments, the surface of the first reinforcing component 30 is provided with a corrosion-resistant coating to improve the weather resistance and prolong the service life of the first reinforcing component 30.

[0104] In some embodiments, the heat exchange component 20 is welded to the first beam 121, and a first welding part is formed.

[0105] In some embodiments, the first reinforcing component 30 and the first welding part at least partially overlap in the same plane perpendicular to the first direction X, which can improve the correspondence between the first reinforcing component 30 and the first welding part, and more effectively reduce the risk of cracking failure of the first welding part.

[0106] In some embodiments, the first reinforcing component 30 and the first welding part at least partially overlap in the same plane perpendicular to the third direction Z, which can further improve the correspondence between the first reinforcing component 30 and the first welding part, and further reduce the risk of cracking failure of the first welding part.

[0107] In some embodiments, the first reinforcing component 30 includes a first part 31 and a second part 32. The first part 31 is connected to the first beam 121, and the second part 32 is connected to one end of the first part 31 close to the heat exchange component 20 and is bent away from the first beam 121 relative to the first part 31. The second part 32 is connected to the heat exchange component 20.

[0108] For example, the second part 32 is connected to one end of the first part 31 close to the heat exchange component 20 and is bent away from the first beam 121 relative to the first part 31, so that the first reinforcing component 30 forms an L-shaped plate body structure or a similar L-shaped plate body structure.

[0109] Through the above structural design, when the battery device 2 is subjected to external impact, the connection of the first part 31 and the first beam 121 enables the load to be effectively transmitted from the first beam 121 to the first reinforcing component 30, and the second part 32 extends to the heat exchange component 20 through bending, which not only facilitates crossing obstacles to avoid other components inside the box body 10, but also changes the direction of force during load transmission, thereby optimizing the overall stress path of the first reinforcing component 30.

[0110] In this way, the above technical solution not only reduces the difficulty of setting the first reinforcing component 30, but also optimizes the overall stress path of the first reinforcing component 30, so that the first reinforcing component 30 has a certain elastic buffering capacity, has an energy absorption and buffering effect in the case of impact, reduces local stress concentration, and thereby can further reduce the risk of connection failure of the heat exchange component 20 and the first beam 121.

[0111] In some embodiments, the first part 31 and the second part 32 are an integral molding structure. On the one hand, the first part 31 and the second part 32 do not need to be connected through an additional connection process, simplifying the manufacturing process flow. At the same time, compared with connecting the first part 31 and the second part 32 through an additional connection process, the first part 31 and the second part 32 in an integral structure have higher structural strength.

[0112] In some embodiments, the first part 31 is connected to the first beam 121 on the side surface thereof facing the first beam 121. In other words, the side surface of the first part 31 facing the first beam 121 is connected to the side surface of the first beam 121 facing the accommodation cavity 11.

[0113] Exemplarily, it can also be understood that the first part 31 is arranged to extend along the side surface of the first beam 121 facing the accommodation cavity 11.

[0114] The contact area between the first reinforcing component 30 and the first beam 121 can be increased, thereby improving the connection strength between the first reinforcing component 30 and the first beam 121 and enhancing the structural reliability of the first reinforcing component 30.

[0115] In some embodiments, the second part 32 is connected to the heat exchange component 20 on the side surface thereof facing the heat exchange component 20. In other words, the side surface of the second part 32 facing the heat exchange component 20 is connected to the side surface of the heat exchange component 20 facing the second part 32.

[0116] Exemplarily, it can also be understood that the second part 32 is arranged to extend along the side surface of the heat exchange component 20 facing the second part 32.

[0117] The contact area between the first reinforcing component 30 and the heat exchange component 20 can be increased, so as to improve the connection strength between the first reinforcing component 30 and the heat exchange component 20, and enhance the structural reliability of the first reinforcing component 30.

[0118] In some embodiments, the first reinforcing component 30 further comprises a third part 33 connected to one end of the second part 32 away from the first part 31 and bent away from the heat exchange component 20 relative to the second part 32.

[0119] For example, the introduction of the third part 33 can make the first reinforcing component 30 form a U-shaped plate body structure or a U-shaped plate body structure.

[0120] By introducing the third part 33, on the one hand, the structural strength of the first reinforcing component 30 as a whole can be further improved, and the load borne by the first reinforcing component 30 can be better dispersed; on the other hand, the third part 33 can also serve as a handle structure for easy grabbing and operation during assembly of the first reinforcing component 30, so that manual or automated equipment is more stable and efficient during handling, positioning and assembly, and the assembly difficulty of the first reinforcing component 30 can be effectively reduced.

[0121] In some embodiments, the first part 31, the second part 32 and the third part 33 are integrally formed. On the one hand, the first part 31, the second part 32 and the third part 33 do not need to be connected through an additional connection process, simplifying the manufacturing process. At the same time, compared with connecting the first part 31, the second part 32 and the third part 33 through an additional connection process, the first part 31, the second part 32 and the third part 33 in an integrated structure have higher structural strength.

[0122] In some embodiments, the surface of the third part 33 away from the first part 31 is perpendicular to the surface of the heat exchange component 20 facing the second part 32. The consistency of the internal structure of the box body 10 can be improved to reduce the overall design and assembly difficulty of the battery device 2.

[0123] In some embodiments, the battery device 2 further comprises a plurality of battery monomers 50 arranged in the accommodation cavity 11, and at least part of the battery monomers 50 abut against the third part 33. The third part 33 can fix and limit the battery monomers 50 to some extent, improving the stability of the battery monomers 50.

[0124] In some embodiments, the second part 32 is bonded to the heat exchange component 20. In other words, the second part 32 and the heat exchange component 20 are connected through a bonding layer.

[0125] Optionally, the material of the bonding layer can be, but is not limited to, a heat-conducting structural adhesive, an epoxy resin adhesive, a silicone adhesive or a polyurethane adhesive.

[0126] The second part 32 is fixed to the heat exchange component 20 by bonding. The bonding layer can achieve uniform stress distribution, and can effectively reduce the risk of local stress concentration of the first reinforcing component 30 and the heat exchange component 20 caused by impact, vibration or thermal cycle. In addition, bonding does not need to drill holes or process mounting grooves on the heat exchange component 20, which avoids the problem of damaging the heat exchange component 20 or reducing the heat exchange efficiency, and is beneficial to maintaining the original performance of the heat exchange component 20.

[0127] In some embodiments, the first reinforcing component 30 includes a first body part, the first body part includes the first part 31 and the second part 32, the first part 31 is connected to the first beam 121, the second part 32 is connected to one end of the first part 31 close to the heat exchange component 20 and is bent relative to the first part 31 in a direction away from the first beam 121, and the second part 32 is connected to the heat exchange component 20.

[0128] In some embodiments, the first body part further includes a third part 33, the third part 33 is connected to one end of the second part 32 away from the first part 31 and is bent relative to the second part 32 in a direction away from the heat exchange component 20.

[0129] In some embodiments, the second reinforcing component 40 further includes a first connecting part, the first connecting part is connected to the end of the first body part in the second direction Y.

[0130] The first connecting part can be fixed to the first body part or can be detachably connected to the first body part. The first connecting part can be directly connected to the first body part or can be limited on the first body part by other components. As an example, the connection mode of the first connecting part and the first body part can be, but is not limited to, welding, bolt connection, plug-in connection or bonding.

[0131] The first connecting part connects the first part 31, the second part 32 and the third part 33. By introducing the first connecting part, the structural strength of the first body part as a whole can be strengthened, thereby improving the reliability of the first reinforcing component 30.

[0132] In some embodiments, the first reinforcing component 30 further includes two first connecting parts, and the two first connecting parts are respectively connected to the two side ends of the first body part in the second direction Y.

[0133] For example, the two first connecting parts are respectively connected to the two side ends of the first body part in the second direction Y, so that the first body part and the two first connecting parts can together enclose a cavity.

[0134] The cavity has a certain energy absorption function. When the battery device 2 is subjected to external impact, it can reduce the stress on the first beam 121 and the heat exchange component 20, thereby further reducing the risk of connection failure between the heat exchange component 20 and the first beam 121.

[0135] In some embodiments, the frame 12 includes two first beams 121, a second beam 122, and a third beam 123. The two first beams 121 are arranged opposite each other along a first direction X, and the second beam 122 and the third beam 123 are arranged opposite each other along a second direction Y. The first beams 121 connect the second beams 122 and the third beam 123, and the first direction X intersects the second direction Y. The second beams 122 and the third beam 123 are arranged in parallel. The first included angle formed between the first beams 121 and the second beams 122 toward the receiving cavity 11 is less than 90°, and the second included angle formed between the first beams 121 and the third beam 123 toward the receiving cavity 11 is greater than 90°.

[0136] The above structure enables the frame 12 to form a trapezoidal structure. On the one hand, the trapezoidal frame 12 can improve the stability and deformation resistance of the structure, reduce the risk of deformation of the frame 12 under stress, and further improve the reliability of the battery device 2. On the other hand, by adjusting the angle values ​​of the first included angle and the second included angle, the overall external dimensions of the frame 12 can be flexibly changed, thereby facilitating the customization of the battery device 2 and enhancing product competitiveness.

[0137] Furthermore, since the first beam 121 is inclined relative to the second beam 122 and the third beam 123, the ends of the first beam 121 and the second beam 122, and the end of the third beam 123, can form a certain amount of redundant space (the space not occupied by the battery cell 50, i.e., Figure 3 (The space between the reference line S and the first beam 121). Therefore, in this embodiment, the first reinforcing member 30 can utilize this space, thereby improving the utilization efficiency of the internal space of the battery device 2.

[0138] The first beam 121 may be fixed to the second beam 122 or detachably connected to the second beam 122. The first beam 121 may be directly connected to the second beam 122 or may be constrained to the second beam 122 by other components. As an example, the connection method between the first beam 121 and the second beam 122 may be, but is not limited to, welding, bolting, plugging, or bonding.

[0139] The first beam 121 may be fixed to the third beam 123 or detachably connected to the third beam 123. The first beam 121 may be directly connected to the second beam 122 or constrained to the third beam 123 by other components. As an example, the connection method between the first beam 121 and the third beam 123 may be, but is not limited to, welding, bolting, plugging, or bonding.

[0140] In some embodiments, the first direction X is perpendicular to the second direction Y.

[0141] In some embodiments, the heat exchange component 20 is also connected to the second beam 122.

[0142] In some embodiments, the heat exchange component 20 and the second beam 122 are connected by friction stir welding.

[0143] In some embodiments, the heat exchange component 20 is also connected to the third beam 123.

[0144] In some embodiments, the heat exchange component 20 and the third beam 123 are connected by friction stir welding.

[0145] In some embodiments, the orthographic projection of the first reinforcing component 30 and the orthographic projection of the third beam 123 are spaced apart in the same plane perpendicular to the second direction Y.

[0146] In other words, the orthographic projection of the first reinforcing component 30 and the orthographic projection of the third beam 123 do not overlap in the same plane perpendicular to the second direction Y.

[0147] That is, the first reinforcing component 30 is entirely located in the redundant space formed by the end of the first beam 121 and the end of the second beam 122 and the end of the third beam 123, so as to further reduce the influence of the first reinforcing component 30 on the arrangement of the battery monomer 50 in the accommodation cavity 11, and help to improve the energy density of the battery device 2.

[0148] In some embodiments, the side surface of the third part 33 facing away from the first part 31 is perpendicular to the side surface of the second beam 122 facing the accommodation cavity 11. The consistency of the internal structure of the battery device 2 can be improved, which facilitates the design and device of the battery device 2 and reduces the production difficulty.

[0149] In some embodiments, the side surface of the third part 33 facing away from the first part 31 is perpendicular to the side surface of the third beam 123 facing the accommodation cavity 11.

[0150] In some embodiments, the battery device 2 further comprises a mounting beam provided with a mounting component, and the mounting beam is connected to the side of the first beam 121 facing away from the accommodation cavity 11.

[0151] Figure 6 A perspective structural schematic view of the first reinforcing component 30 of the battery device 2 provided by some embodiments of the present application, Figure 7 Another partial top view structural schematic view of the battery device 2 provided by some embodiments of the present application, Figure 8 A perspective structural schematic view of the first reinforcing component 30 of the battery device 2 provided by some embodiments of the present application, Figure 7 A sectional view structural schematic view along B-B, Figure 9 A sectional view structural schematic view along B-B, Figure 8a local enlarged structure diagram of N of the battery device 2, Figure 10 a perspective structure diagram of a second reinforcing component 40 of the battery device 2 provided in some embodiments of the present application.

[0152] With continued reference to Figures 6 to 10 In some embodiments, the battery device 2 further comprises a second reinforcing component 40, which is arranged in the accommodating cavity 11 and located at the intersection of the heat exchange component 20 and the first beam 121, and connects the first beam 121 and the heat exchange component 20. The first beam 121 is located at one side of the accommodating cavity 11 along the first direction X, and extends along the second direction Y. The first reinforcing component 30 and the second reinforcing component 40 are arranged along the second direction Y, and the second reinforcing component 40 is closer to the end of the first beam 121 along the second direction Y than the first reinforcing component 30.

[0153] The second reinforcing component 40 is located at the intersection of the heat exchange component 20 and the first beam 121. The intersection of the heat exchange component 20 and the first beam 121 can also be understood as the position of the connecting part of the heat exchange component 20 and the first beam 121.

[0154] The second reinforcing component 40 connects the first beam 121 and the heat exchange component 20. In other words, a part of the second reinforcing component 40 is connected to the first beam 121, and another part of the second reinforcing component 40 is connected to the heat exchange component 20.

[0155] The second reinforcing component 40 can be fixed on the first beam 121, or can be detachably connected to the first beam 121. The second reinforcing component 40 can be directly connected to the first beam 121, or can be limited on the first beam 121 by other components. As an example, the connection mode of the second reinforcing component 40 and the first beam 121 can be, but is not limited to, welding, bolt connection, plug-in or adhesion, etc.

[0156] The second reinforcing component 40 can be fixed on the heat exchange component 20, or can be detachably connected to the heat exchange component 20. The second reinforcing component 40 can be directly connected to the heat exchange component 20, or can be limited on the heat exchange component 20 by other components. As an example, the connection mode of the second reinforcing component 40 and the heat exchange component 20 can be, but is not limited to, welding, bolt connection, plug-in or adhesion, etc.

[0157] Optionally, the second reinforcing component 40 can be, but is not limited to, a plate-shaped structure, a block-shaped structure or a columnar structure, etc.

[0158] Optionally, the shape of the second reinforcing component 40 can be, but is not limited to, a triangular plate body, an L-shaped plate body or an arc-shaped plate body, so as to form a force transmission path.

[0159] Optionally, the second reinforcing component 40 can be made of stainless steel or aluminum alloy, and can be processed by stamping, bending or casting.

[0160] The second reinforcing component 40 is closer to the end of the first beam 121 along the second direction Y than the first reinforcing component 30. In other words, the first reinforcing component 30 is located in the middle region of the first beam 121, and the second reinforcing component 40 is located at the end of the first beam 121 along the second direction Y.

[0161] It should be noted that the first reinforcing component 30 of the embodiment of the present application is located in the middle region of the first beam 121, which not only includes the case where the first reinforcing component 30 is absolutely located in the middle region of the first beam 121 along the second direction Y, but also includes the case where the first reinforcing component 30 is generally located in the middle region of the first beam 121 along the second direction Y, which is a common understanding in engineering.

[0162] The second reinforcing component 40 of the embodiment of the present application is located at the end of the first beam 121 along the second direction Y, which not only includes the case where the second reinforcing component 40 is absolutely located at the end of the first beam 121 along the second direction Y, but also includes the case where the second reinforcing component 40 is generally located at the end of the first beam 121 along the second direction Y, which is a common understanding in engineering.

[0163] The second reinforcing component 40 and the first reinforcing component 30 can be the same structure or different structures.

[0164] The second reinforcing component 40 can form a multi-path stress system between the first beam 121 and the heat exchange component 20. When the battery device 2 is subjected to external impact, the second reinforcing component 40 can share a part of the impact force, so as to further reduce the risk of local stress concentration at the direct connection between the first beam 121 and the heat exchange component 20, thereby further reducing the risk of connection failure between the heat exchange component 20 and the first beam 121.

[0165] In this way, the second reinforcing component 40 can improve the overall connection strength between the first beam 121 and the heat exchange component 20. When the battery device 2 is subjected to external impact, the second reinforcing component 40 can share a part of the impact force, so as to further reduce the stress of the connection part between the first beam 121 and the heat exchange component 20, thereby further reducing the risk of connection failure between the heat exchange component 20 and the first beam 121, and effectively improving the reliability of the battery device 2.

[0166] The above technical solution introduces the second reinforcing component 40, and the cooperation of the second reinforcing component and the first reinforcing component can further improve the structural stability between the first beam 121 and the heat exchange component 20.

[0167] In some embodiments, the surface of the second reinforcing component 40 is provided with an anti-corrosion coating to improve the weather resistance and prolong the service life of the second reinforcing component 40.

[0168] In some embodiments, the second reinforcing component 40 includes a second main body part 41, which includes a fourth part 411 connected to the first beam 121, a fifth part 412 connected to the fourth part 411 at one end close to the heat exchange component 20 and bent in a direction away from the first beam 121 relative to the fourth part 411, and a sixth part 413 connected to the fifth part 412 at an end away from the fourth part 411 and bent in a direction away from the first beam 121 relative to the fifth part 412, and connected to the heat exchange component 20.

[0169] By way of example, through the above structure, the second reinforcing component 40 can form a C-shaped plate body structure or a C-shaped plate body structure.

[0170] Through the above structure design, on the one hand, when the battery device 2 is subjected to external impact, the connection of the fourth part 411 to the first beam 121 enables the load to be effectively transmitted from the first beam 121 to the second reinforcing component 40; the fifth part 412 is arranged by bending to form an avoidance structure to avoid other components inside the box body 10; the sixth part 413 is further bent and extended to the heat exchange component 20, and in cooperation with the fourth part 411 and the fifth part 412, it can change the direction of the force during load transmission, thereby optimizing the overall stress path of the second reinforcing component 40.

[0171] In this way, the above technical solution not only reduces the difficulty of setting the second reinforcing component 40, but also optimizes the overall stress path of the second reinforcing component 40, so that the second reinforcing component 40 has a certain elastic buffering capacity, so that it has an energy absorption and buffering effect in the case of impact, reduces local stress concentration, thereby further reducing the risk of connection failure of the heat exchange component 20 and the first beam 121.

[0172] In some embodiments, the fourth part 411, the fifth part 412, and the sixth part 413 are integrally formed. On the one hand, there is no need to connect the fourth part 411, the fifth part 412, and the sixth part 413 through an additional connection process, simplifying the manufacturing process flow. At the same time, compared to connecting the fourth part 411, the fifth part 412, and the sixth part 413 through an additional connection process, the fourth part 411, the fifth part 412, and the sixth part 413 in an integrated structure have higher structural strength.

[0173] In some embodiments, the fourth portion 411 is attached to the first beam 121 in abutment with a side surface of the first beam 121 facing the accommodating cavity 11. In other words, the fourth portion 411 is attached to the first beam 121 in abutment with a side surface of the first beam 121 facing a side surface of the accommodating cavity 11.

[0174] Exemplarily, it can also be understood that the fourth portion 411 is arranged to extend along the first beam 121 towards a side surface of the accommodating cavity 11.

[0175] The contact area between the second reinforcing member 40 and the first beam 121 can be increased, so as to improve the connection strength between the second reinforcing member 40 and the first beam 121, and enhance the structural reliability of the second reinforcing member 40.

[0176] In some embodiments, the sixth portion 413 is attached to the heat exchange member 20 in abutment with a side surface of the heat exchange member 20 facing the accommodating cavity 11. In other words, the sixth portion 413 is attached to the heat exchange member 20 in abutment with a side surface of the heat exchange member 20 facing a side surface of the accommodating cavity 11.

[0177] Exemplarily, it can also be understood that the sixth portion 413 is arranged to extend along the heat exchange member 20 towards a side surface of the accommodating cavity 11.

[0178] The contact area between the second reinforcing member 40 and the heat exchange member 20 can be increased, so as to improve the connection strength between the second reinforcing member 40 and the heat exchange member 20, and enhance the structural reliability of the second reinforcing member 40.

[0179] In some embodiments, the second reinforcing member 40 further comprises a second connecting portion 42, which is connected to an end of the second main body portion 41 along the second direction Y.

[0180] The second connecting portion 42 can be fixed to the second main body portion 41, or can be detachably connected to the second main body portion 41. The second connecting portion 42 can be directly connected to the second main body portion 41, or can be limited on the second main body portion 41 by other components. As an example, the connection mode of the second connecting portion 42 and the second main body portion 41 can be, but is not limited to, welding, bolt connection, plug-in connection or adhesion, etc.

[0181] The second connecting portion 42 connects the fourth portion 411, the fifth portion 412 and the sixth portion 413. By introducing the second connecting portion 42, the structural strength of the second main body portion 41 as a whole can be enhanced, so as to improve the reliability of the second reinforcing member 40.

[0182] In some embodiments, the second reinforcing member 40 further comprises two second connecting portions 42, which are respectively connected to two side ends of the second main body portion 41 along the second direction Y.

[0183] Exemplarily, the two second connecting portions 42 are respectively connected to two side end portions of the second main body portion 41 along the second direction Y, so that the second main body portion 41 and the two second connecting portions 42 can jointly enclose the cavity.

[0184] The cavity has a certain energy absorption effect, and when the battery device 2 is subjected to external impact, the stress of the first beam 121 and the heat exchange component 20 can be reduced, thereby further reducing the risk of connection failure of the heat exchange component 20 and the first beam 121.

[0185] In some embodiments, the orthographic projection of the battery monomer 50 and the orthographic projection of the second reinforcing component 40 are spaced apart in the same plane perpendicular to the first direction X.

[0186] In other words, the orthographic projection of the battery monomer 50 and the orthographic projection of the second reinforcing component 40 do not overlap in the same plane perpendicular to the first direction X.

[0187] The second reinforcing component 40 can utilize the space inside the box body 10 where the battery monomer 50 is not arranged, thereby improving the space utilization rate inside the battery device 2 and reducing the influence of the second reinforcing component 40 on the energy density of the battery device 2.

[0188] In some embodiments, the heat exchange component 20 and the first beam 121 are connected by friction stir welding.

[0189] Friction stir welding is a solid-phase connection process, which generates friction heat at the joint by a high-speed rotating stir pin, so that the materials at the connection site flow plastically and embed each other in a non-melted state, thereby achieving firm bonding.

[0190] By using friction stir welding to realize the connection between the heat exchange component 20 and the box body 10, the risk of pore generation in the weld can be reduced to improve the airtightness and pressure resistance. Moreover, the joint strength of friction stir welding is high and the deformation is small, which can significantly improve the connection reliability between the heat exchange component 20 and the first beam 121, and reduce the failure risk under long-term vibration, thermal cycling and external impact conditions.

[0191] According to some embodiments of the present application, the present application also provides a power utilization device, which comprises the battery device 2 of any one of the above schemes, and the battery device 2 is used for storing or providing electric energy.

[0192] If not specifically stated, all embodiments and optional embodiments of the present application can be combined to form new technical solutions. All technical features and optional technical features of the present application can be combined to form new technical solutions.

[0193] In order to better understand the battery device 2 provided by the embodiments of the present application, an embodiment of the battery device 2 in actual application is provided for description based on the same inventive concept.

[0194] The embodiments of the present application provide a battery device 2, which comprises a box body 10, a heat exchange component 20 and a first reinforcing component 30. The box body 10 has a containing cavity 11. The box body 10 comprises a frame 12, which is arranged around the containing cavity 11 and comprises a first beam 121. The heat exchange component 20 is arranged in the containing cavity 11 and connected to the first beam 121. The first reinforcing component 30 is arranged in the containing cavity 11 and located at an included angle between the heat exchange component 20 and the first beam 121. The first reinforcing component 30 connects the first beam 121 and the heat exchange component 20.

[0195] The first reinforcing component 30 comprises a first part 31, a second part 32 and a third part 33. The first part 31 is connected to the first beam 121 in close contact with a side surface of the first beam 121. The second part 32 is connected to one end of the first part 31 close to the heat exchange component 20 and is bent away from the first beam 121 relative to the first part 31. The second part 32 is connected to the heat exchange component 20 in close contact with a side surface of the heat exchange component 20. The third part 33 is connected to one end of the second part 32 away from the first part 31 and is bent away from the heat exchange component 20 relative to the second part 32.

[0196] The frame 12 comprises two first beams 121, a second beam 122 and a third beam 123. The two first beams 121 are oppositely arranged along a first direction X. The second beam 122 and the third beam 123 are oppositely arranged along a second direction Y. The first beam 121 is connected between the second beam 122 and the third beam 123. The first direction X intersects the second direction Y. The second beam 122 and the third beam 123 are arranged in parallel. A first included angle between the first beam 121 and the second beam 122 towards the containing cavity 11 is less than 90°. A second included angle between the first beam 121 and the third beam 123 towards the containing cavity 11 is greater than 90°. In the same plane perpendicular to the second direction Y, the orthographic projection of the first reinforcing component 30 is arranged in a spaced manner with the orthographic projection of the third beam 123.

[0197] The arrangement of the first reinforcing component 30 can form a multi-path stress system between the first beam 121 and the heat exchange component 20. When the battery device 2 is subjected to external impact, the first reinforcing component 30 can share a part of the impact force, so that the first beam 121 and the heat exchange component 20 no longer rely on the connection part between the two to resist the impact force. The risk of local stress concentration at the direct connection between the first beam 121 and the heat exchange component 20 is reduced, thereby reducing the risk of connection failure between the heat exchange component 20 and the first beam 121.

[0198] Thus, the first reinforcing member 30 can improve the overall connection strength between the first beam 121 and the heat exchange member 20. When the battery device 2 is subjected to external impact, the first reinforcing member 30 can share part of the impact force to reduce the stress on the connection between the first beam 121 and the heat exchange member 20, thereby reducing the risk of connection failure between the heat exchange member 20 and the first beam 121 and effectively improving the reliability of the battery device 2.

[0199] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0200] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: A housing having a receiving cavity, the housing including a frame surrounding the receiving cavity, the frame including a first beam; A heat exchange component is disposed within the receiving cavity and connected to the first beam; A first reinforcing member is disposed within the receiving cavity and located at the angle between the heat exchange member and the first beam. The first reinforcing member connects the first beam and the heat exchange member.

2. The battery device according to claim 1, characterized in that, The first reinforcing member includes a first part and a second part. The first part is connected to the first beam, and the second part is connected to the end of the first part near the heat exchange member and is bent relative to the first part in a direction away from the first beam. The second part is connected to the heat exchange member.

3. The battery device according to claim 2, characterized in that, The first portion is attached to the first beam on one side facing the first beam; and / or, The second part is attached to the heat exchange component on the side facing the heat exchange component.

4. The battery device according to claim 2, characterized in that, The first reinforcing member further includes a third portion, which is connected to the end of the second portion away from the first portion and is bent relative to the second portion in a direction away from the heat exchange member.

5. The battery device according to claim 4, characterized in that, The surface of the third part facing away from the first part is perpendicular to the surface of the heat exchange component facing the second part.

6. The battery device according to claim 2, characterized in that, The second part is bonded to the heat exchange component.

7. The battery device according to claim 1, characterized in that, The frame includes two first beams, a second beam, and a third beam. The two first beams are arranged opposite each other along a first direction, and the second beam and the third beam are arranged opposite each other along a second direction. The first beams connect the second beam and the third beam, and the first direction intersects the second direction. The second beam and the third beam are arranged in parallel, the first included angle between the first beam and the second beam toward the receiving cavity is less than 90°, and the second included angle between the first beam and the third beam toward the receiving cavity is greater than 90°.

8. The battery device according to claim 7, characterized in that, In the same plane perpendicular to the second direction, the orthographic projection of the first reinforcing member and the orthographic projection of the third beam are spaced apart.

9. The battery device according to claim 1, characterized in that, The battery device further includes a second reinforcing member, which is disposed within the receiving cavity and located at the angle between the heat exchange member and the first beam. The second reinforcing member connects the first beam and the heat exchange member. The first beam is located on one side of the receiving cavity along a first direction, and the first beam extends along a second direction, the first direction intersecting the second direction; The first reinforcing member and the second reinforcing member are spaced apart along the second direction, and the second reinforcing member is closer to the end of the first beam along the second direction than the first reinforcing member.

10. The battery device according to claim 9, characterized in that, The second reinforcing component includes a second main body, which includes a fourth part, a fifth part, and a sixth part, wherein the fourth part is connected to the first beam; The fifth part is connected to the end of the fourth part near the heat exchange component, and is bent relative to the fourth part in a direction away from the first beam; The sixth part is connected to the end of the fifth part away from the fourth part and is bent relative to the fifth part in a direction away from the first beam. The sixth part is connected to the heat exchange component.

11. The battery device according to claim 10, characterized in that, The second reinforcing member further includes a second connecting portion, which is connected to the end of the second main body portion along the second direction.

12. The battery device according to any one of claims 1-11, characterized in that, The heat exchange component is connected to the first beam by friction stir welding.

13. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-12, the battery device being used to store or provide electrical energy.

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