Battery device, box body and electric equipment

Abstract

The utility model discloses a battery device, a box body and electric equipment. The battery device comprises a battery monomer, a frame body and a supporting plate, the supporting plate and the frame body are jointly enclosed to form an accommodating space for accommodating the battery monomers; the supporting plate comprises a plate body and a supporting structure; the plate body is connected to the frame body, the supporting structure protrudes out of one side, deviating from the battery monomers, of the plate body, and the supporting structure and the plate body are of an integrally formed structure. And the supporting structure and the plate body are arranged into an integrally formed structure, so that the connecting strength of the supporting structure and the plate body can be further improved, and the strength and the stability of supporting the battery monomer are improved. Moreover, compared with the mode of manufacturing the supporting plate in a sectional material machining mode, the integrally-formed structure can reduce machining steps, and the production efficiency and the manufacturing precision are improved.

Description

Technical Field

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

[0002] Batteries are widely used in various electronic devices, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy airplanes, electric toy ships, power tools and energy storage systems, etc.

[0003] At present, how to improve the efficiency of battery assembly processing is one of the research issues in this field. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device, a housing and an electrical device, which improve the processing efficiency and structural strength of the housing, thereby improving the operating stability of the battery device.

[0005] In a first aspect, the present application provides a battery device, including a battery cell, a frame, and a support plate. The support plate and the frame together enclose a storage space for accommodating the battery cell, and the support plate includes a plate body and a support structure. The plate body is connected to the frame body, and the support structure protrudes from a side of the plate body away from the battery cell, wherein the support structure and the plate body are an integrally formed structure.

[0006] In the technical solution of the embodiment of the present application, a frame and a support plate are provided to provide support and stable space for the battery cell, thereby improving the stability of the battery cell operation. Among them, the plate body of the support structure is used to support the battery cell, and the support structure is used to structurally reinforce the local position of the plate body, thereby improving the support strength and stability of the plate body for the battery cell. In particular, setting the support structure as an integrally formed structure with the plate body can further improve the connection strength between the support structure and the plate body, and improve the strength and stability of the support for the battery cell. Moreover, compared with manufacturing the support plate by profile processing, the integrally formed structure can reduce the processing steps, improve production efficiency and manufacturing accuracy. In summary, the above structure improves the support strength and stability of the support plate, reduces the risk of displacement or deformation of the battery cell during operation, and thus improves the stability of the battery device operation.

[0007] In some embodiments, the support structure includes a first reinforcing rib extending along a first direction and a second reinforcing rib extending along a second direction, and the first direction and the second direction are arranged to intersect. In the above structure, the first reinforcing rib and the second reinforcing rib are arranged to intersect, forming a grid-like or cross-shaped support system, which can effectively disperse and transmit force and reduce the risk of deformation or damage of the plate in a single direction. At the same time, the intersection arrangement also increases the overall rigidity and torsion resistance of the structure, making the support structure more stable.

[0008] In some embodiments, the plate body is provided with an avoidance hole, which is arranged at a position corresponding to the pressure relief mechanism of the battery cell. In the above structure, by providing the avoidance hole, the internal substances of the battery cell can be smoothly discharged when the battery cell is in thermal runaway, reducing the interference and obstruction of the discharged substances, reducing the risk of combustion or explosion of the battery cell, and improving the reliability of battery operation.

[0009] In some embodiments, the number of first reinforcing ribs is multiple, the number of second reinforcing ribs is multiple, a fire-fighting cavity is defined between two adjacent first reinforcing ribs and two adjacent second reinforcing ribs, and the avoidance hole is connected to the fire-fighting cavity. In the above structure, by setting up the fire-fighting cavity, a space is provided for the substances discharged from the thermal runaway of the battery cell, and the discharge is guided, thereby reducing the damage caused by the discharged substances to the surrounding battery cells and reducing the risk of causing thermal runaway of consecutive battery cells.

[0010] In some embodiments, the battery device further comprises a bottom guard plate disposed on the side of the support plate away from the accommodation space, the bottom guard plate is sealed and connected to the support plate, and firefighting materials are disposed in the firefighting cavity. In the above structure, the overall structural strength of the battery device is improved by providing the bottom guard plate, the bottom guard plate is sealed and connected to the support plate, the sealing performance of the accommodation space is improved, and the influence of moisture and impurities on the battery cell is reduced. In addition, firefighting materials are disposed in the firefighting cavity to reduce the temperature of the discharged material, reduce the risk of combustion or explosion of the discharged material, and improve the stability of the operation of the battery cell.

[0011] In some embodiments, the fire-fighting material is bonded to the plate. In the above structure, the bonding connection method is easy to operate and has high connection strength, which can reduce the risk of the fire-fighting material falling off and improve the effect of cooling and fire-fighting.

[0012] In some embodiments, the plate body is provided with a first connection hole, the frame body is provided with a second connection hole corresponding to the first connection hole, and the support plate further comprises a connection piece, which passes through the first connection hole and the second connection hole in sequence to connect the support plate to the frame body. In the above structure, the plate body and the frame body are connected by the connection piece, thereby improving the connection strength between the support plate and the frame body and the stability of the overall structure.

[0013] In some embodiments, the support plate further comprises an annular welding portion, which is arranged around the circumference of the plate body, and along the thickness direction of the plate body, the maximum size of the annular welding portion is larger than the maximum size of the plate body. The annular welding portion is connected between the plate body and the frame body. In the above structure, by providing the annular welding portion, the contact area between the circumference of the plate body and the frame body is increased, and the connection strength and stability between the support plate and the frame body are improved.

[0014] In some embodiments, the annular welding portion and the plate body are an integrally formed structure. The above technical solution improves the connection strength between the annular welding portion and the plate body, and improves the overall manufacturing efficiency of the support plate and the assembly efficiency of the battery device.

[0015] In some embodiments, the end surface of the annular welding part facing away from the battery cell protrudes from the plate body, and the end surface of the annular welding part facing the battery cell is flush with the plate body. In the above structure, one side of the annular welding part protrudes from the plate body, which can effectively utilize the space on the side of the plate body facing away from the battery cell, and the other side of the annular welding part is flush with the plate body, which can reduce the interference of the annular welding part on the battery cell and improve the structural stability in the accommodating space.

[0016] In some embodiments, the surface of one side of the annular welding portion facing the frame is concave to form a welding groove. The above structure further increases the surface area of ​​the side where the annular welding portion contacts the frame, and more welding fusion points can be formed during the welding process, thereby enhancing the strength of the welded joint. The welding groove can accommodate more welding material to form a more uniform and dense weld. Not only can the mechanical properties of the welded joint be improved, but also welding defects can be reduced, and the strength and stability of the connection between the support plate and the frame can be improved.

[0017] In some embodiments, a surface of one side of the frame body facing the plate body protrudes to form a connection portion, and the connection portion is connected to the annular welding portion. In the above structure, the protruding connection portion provides a clear positioning and support point for the welding process, making the assembly and welding process more efficient, thereby reducing the difficulty and cost of assembly and improving production efficiency. At the same time, it can reduce errors and deviations in the assembly process and ensure accurate docking and connection between the support plate and the frame body.

[0018] In some embodiments, the support structure and the plate body are manufactured by integral die casting. In the above technical solution, the support structure and the plate body are integrally die cast to improve the manufacturing efficiency and molding accuracy of the support plate.

[0019] In some embodiments, the frame and the support plate are manufactured by integral die-casting, which further reduces the assembly steps and improves the assembly efficiency of the battery device.

[0020] In a second aspect, the present application provides a box body, including a frame body and a support plate. The support plate and the frame body together enclose a storage space for accommodating a battery cell. The support plate includes a plate body and a support structure, and the plate body is connected to the frame body. The support structure protrudes from a side of the plate body away from the battery cell. The support structure and the plate body are an integrally formed structure.

[0021] In a third aspect, the present application provides an electrical device, which includes the box body in the above embodiment or the battery device in the above embodiment, and the battery device is used to provide electrical energy.

[0022] 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

[0023] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0024] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0025] Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application;

[0026] Figure 3 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application;

[0027] Figure 4 A schematic diagram of the structure of a support plate provided in some embodiments of the present application;

[0028] Figure 5 A schematic diagram of the structure of a support plate provided in some other embodiments of the present application;

[0029] Figure 6 for Figure 4 Structural diagram of the AA section;

[0030] Figure 7 for Figure 6 A schematic diagram of the enlarged structure at the middle circle B;

[0031] Figure 8 A schematic diagram of a partial structure of a battery device provided in some embodiments of the present application;

[0032] Fig. 9 for Figure 8 Structural diagram of the CC section;

[0033] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure at the middle circle D.

[0034] DETAILED DESCRIPTION OF REFERENCE NUMERALS

[0035] 1. Vehicle; 2. Battery device; 3. Controller; 4. Motor; 5. Box; 51. First box part; 52. Second box part; 53. Accommodation space; 6. Battery cell; 7. Frame; 701. Connection part; 8. Support plate; 801. Plate; 802. Support structure; 803. First reinforcing rib; 804. Second reinforcing rib; 805. Avoidance hole; 806. First connection hole; 807. Annular welding part; 808. Welding groove. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0038] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0041] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

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

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

[0044] 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.

[0045] 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.

[0046] At present, a battery device generally includes a box body and a battery cell disposed in the box body. The box body includes a frame structure and a support plate. The support plate and the frame body can be connected by welding or threading to form a storage space for the battery cell. The support plate is generally formed by cutting a whole plate, and then bonding, perforating or welding are performed at a local position of the plate body as required. The above process flow has many operating steps and is difficult, which reduces the overall efficiency of the battery device.

[0047] Based on the above problems, the present application provides a battery device. A frame and a support plate are provided in the battery device to provide support and stable space for the battery cells, thereby improving the stability of the battery cells. Among them, the plate body of the support structure is used to support the battery cells, and the support structure is used to structurally reinforce the local position of the plate body to improve the support strength and stability of the plate body for the battery cells. In particular, setting the support structure with the plate body as an integrally formed structure can further improve the connection strength between the support structure and the plate body, and improve the strength and stability of the support for the battery cells. Moreover, compared with manufacturing the support plate by profile processing, the integrally formed structure can reduce the processing steps, improve production efficiency and manufacturing accuracy. In summary, the above structure improves the support strength and stability of the support plate, reduces the risk of displacement or deformation of the battery cells due to deformation of the support plate, and thus improves the stability of the battery device.

[0048] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0049] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, a battery cell assembly may be a battery module, and a battery module is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, a battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0050] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0051] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0052] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0053] In the embodiment of the present application, the battery cell may be a secondary battery cell, which refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0054] Battery cells may include but are not limited to lithium ion battery cells, sodium ion battery cells, sodium lithium ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium sulfur battery cells, magnesium ion battery cells, nickel metal hydride battery cells, nickel cadmium battery cells, lead storage battery cells, etc.

[0055] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no particular limitation in the present application.

[0056] 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.

[0057] 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.

[0058] The battery device disclosed in the embodiments of the present application can be used in various energy storage systems that use the battery device as a power source or use the battery device as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0059] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0060] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0061] like Figure 1 As shown, a battery device 2 is disposed inside the vehicle 1, and the battery device 2 may be disposed at the bottom, head, or tail of the vehicle 1. The battery device 2 may be used to power the vehicle 1, for example, the battery device 2 may be used as an operating power source for the vehicle 1.

[0062] 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 .

[0063] 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.

[0064] Figure 2 Schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application.

[0065] The box 5 is used to accommodate the battery cell 6, and the box 5 can be of various structures. In some embodiments, the box 5 can include a first box portion 51 and a second box portion 52, the first box portion 51 and the second box portion 52 cover each other, and the first box portion 51 and the second box portion 52 jointly define a storage space 53 for accommodating the battery cell. The first box portion 51 can be a hollow structure with one end open, and the second box portion 52 is a plate-like structure, and the second box portion 52 covers the open side of the first box portion 51 to form a box 5 with a storage space 53; the first box portion 51 and the second box portion 52 can also be hollow structures with one side open, and the open side of the first box portion 51 covers the open side of the second box portion 52 to form a box 5 with a storage space 53. Of course, the first box portion 51 and the second box portion 52 can be of various shapes, such as a cylinder, a cuboid, etc.

[0066] In order to improve the sealing performance after the first box body 51 and the second box body 52 are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the first box body 51 and the second box body 52 .

[0067] Assuming that the first box body portion 51 covers the top of the second box body portion 52 , the first box body portion 51 can also be referred to as an upper box cover, and the second box body portion 52 can also be referred to as a lower box body.

[0068] In the battery device 2, the battery cell 6 can be one or more. If there are more than one battery cell 6, the battery cells 6 can be connected in series, in parallel or in mixed connection. Mixed connection means that the battery cells 6 are both connected in series and in parallel. The battery cells 6 can be directly connected in series, in parallel or in mixed connection, and then the whole formed by the battery cells 6 is accommodated in the box 5; of course, the battery cells can also be connected in series, in parallel or in mixed connection to form a battery module, and then the battery modules are connected in series, in parallel or in mixed connection to form a whole, and then accommodated in the box 5.

[0069] In some optional embodiments, the battery cells 6 may also be directly accommodated in the box body 5 to reduce the connecting components or supporting components required to form the battery module and improve the energy density of the battery device 2 .

[0070] For example, the battery cell 6 may be the smallest unit constituting the battery device 2 .

[0071] Figure 3 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application.

[0072] like Figure 3 As shown, in some embodiments, the battery cell 6 includes a housing 40 and an electrode assembly 10 accommodated in the housing 40 .

[0073] The electrode assembly 10 includes a positive electrode and a negative electrode. During the charge and discharge process of the battery cell 6, active ions (such as lithium ions) are inserted and removed back and forth between the positive electrode and the negative electrode. Optionally, the electrode assembly 10 also includes a separator disposed between the positive electrode and the negative electrode, which can reduce the risk of short circuit between the positive and negative electrodes while allowing active ions to pass through.

[0074] The housing 40 is used to encapsulate the electrode assembly 10 and the electrolyte and other components. The housing 40 may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing 40 ), or an aluminum-plastic film.

[0075] In some embodiments, the housing 40 includes a shell 20 and an end cover 30 . The shell 20 has an opening, and the end cover 30 is used to cover the opening.

[0076] In some embodiments, the battery cell 6 further includes an electrolyte contained in the housing 40. The electrolyte plays a role in conducting ions between the positive and negative electrodes and can be in liquid, gel or solid state.

[0077] In some embodiments, the battery cell 6 includes an electrode terminal. The electrode terminal is electrically connected to the electrode assembly 10 to output or input electrical energy of the battery cell 6.

[0078] In some embodiments, the battery cell 6 includes a pressure relief mechanism, which is used to rupture when the internal pressure of the battery cell 6 exceeds a threshold value to release the pressure inside the battery cell 6. Specifically, the pressure relief mechanism can be an element or component that is activated when the battery cell 6 reaches a certain condition.

[0079] Please refer to Figures 2 to 4 , Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application, Figure 3 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application, Figure 4 A schematic diagram of the structure of a support plate provided in some embodiments of the present application.

[0080] As shown in the figure, the battery device 2 provided in the embodiment of the present application includes a battery cell 6, a frame 7 and a support plate 8. The support plate 8 and the frame 7 together enclose a receiving space 53 for receiving the battery cell 6, and the support plate 8 includes a plate body 801 and a support structure 802. The plate body 801 is connected to the frame 7, and the support structure 802 protrudes from the side of the plate body 801 away from the battery cell 6, wherein the support structure 802 and the plate body 801 are an integrally formed structure.

[0081] The frame 7 may include a plurality of beams arranged to intersect each other, and the plurality of boxes 5 are connected to each other and define a storage space 53 for accommodating the battery cell 6. Optionally, an expansion beam may be provided in the frame 7 to reduce the deformation and displacement of the battery cell 6. In order to improve the structural stability of the frame 7, a metal material with a certain strength may be used for manufacturing, such as aluminum alloy, stainless steel, etc.

[0082] The support plate 8 is a structure that directly contacts the battery cell 6 and forms a support. Optionally, the support plate 8 can be made of stainless steel, aluminum alloy, etc. The plate body 801 is a flat structure, and the support structure 802 can be a support bar, a support block, etc. formed on the surface of the plate body 801. The support structure 802 is arranged at a local position on the plate body 801 where the structure needs to be strengthened. For example, the position on the plate body 801 corresponding to the battery cell 6, or the position on the plate body 801 corresponding to the electrical equipment in the battery device 2. Since these local positions are subjected to a large load, it is necessary to set a support structure 802 to improve their relative strength and reduce the risk of deformation of the local position due to a large force.

[0083] An integrally formed structure is one in which the raw material is directly processed into the shape and structure of the final product through a single operation or step during the manufacturing process without the need for subsequent assembly or splicing. Typically, the material can be heated to a plastic state and then cooled and solidified into a preset shape and size through a mold, pressure or other forming method. Compared with materials obtained through profile processing, integrally formed structures have the advantages of high precision, high structural strength, high molding efficiency and fewer process steps.

[0084] Exemplarily, one-piece molding may include one-piece die-casting, 3D printing, and injection molding. Among them, one-piece die-casting refers to the process of melting the metal and injecting it into a high-pressure casting mold. The molten metal undergoes a high pressure and cooling process and solidifies into the desired molded part. The metal can be a single type of metal or an alloy composed of multiple metals. The metal castings after high pressure and cooling have the characteristics of high shape accuracy, light weight, high strength, and high molding efficiency. 3D printing refers to cutting a 3D model made by design or scanning into multiple sections according to a certain coordinate axis, and then printing them out layer by layer, and stacking them together according to the original position to finally form a solid three-dimensional model.

[0085] Compared with manufacturing the box components of the present application by cutting, welding and other processes on the profile, the one-piece molding process in the present application can improve the manufacturing efficiency and the accuracy of material molding.

[0086] In the technical solution of the embodiment of the present application, a frame 7 and a support plate 8 are provided to provide support and stable space for the battery cell 6, thereby improving the stability of the operation of the battery cell 6. Among them, the plate body 801 of the support structure 802 is used to support the battery cell 6, and the support structure 802 is used to structurally reinforce the local position of the plate body 801, thereby improving the support strength and stability of the plate body 801 for the battery cell 6. In particular, the support structure 802 is set as an integrally formed structure with the plate body 801, which can further improve the connection strength between the support structure 802 and the plate body 801, and improve the strength and stability of the support for the battery cell 6. Moreover, compared with manufacturing the support plate 8 by processing the profile, the integrally formed structure can reduce the processing steps, improve the production efficiency and manufacturing accuracy. In summary, the above structure improves the support strength and stability of the support plate 8, reduces the risk of displacement or deformation of the battery cell 6 during operation, and thus improves the stability of the operation of the battery device 2.

[0087] In some embodiments of the present application, the support structure 802 includes a first reinforcing rib 803 extending along a first direction and a second reinforcing rib 804 extending along a second direction, and the first direction and the second direction are arranged to intersect.

[0088] In the above structure, the first reinforcing ribs 803 and the second reinforcing ribs 804 are arranged to intersect each other, forming a grid-like or cross-shaped support system, which can effectively disperse and transmit force, and reduce the risk of deformation or damage of the plate 801 in a single direction. At the same time, the intersecting arrangement also increases the overall rigidity and torsion resistance of the structure, making the support structure 802 more stable.

[0089] In some embodiments of the present application, the first direction is the width direction of the battery cell 6, and the second direction is the length direction of the battery cell 6. The battery cell 6 may be subjected to forces and pressures from different directions during use, and the first reinforcing ribs 803 and the second reinforcing ribs 804 are arranged along the width and length directions of the battery cell 6, so that when the battery cell 6 is subjected to external forces, uniform support can be provided to the battery cell 6, thereby reducing the risk of deformation or damage due to uneven force, and improving the stability of the operation of the battery cell 6.

[0090] In some embodiments of the present application, a avoidance hole 805 is provided on the plate body 801, and the avoidance hole 805 is arranged at a position corresponding to the pressure relief mechanism of the battery cell 6. The avoidance hole 805 penetrates along the thickness direction of the plate body 801, and the shape of the avoidance hole 805 can be consistent with the contour shape of the pressure relief mechanism, so as to smoothly discharge the internal substances of the battery cell 6 while ensuring the structural strength and integrity of the plate body 801 itself. Exemplarily, the shape of the avoidance hole 805 can be circular, elliptical, runway-shaped or rectangular. There are multiple avoidance holes 805, and each avoidance hole 805 is arranged corresponding to a battery cell 6. Multiple avoidance holes 805 can be arranged at intervals along the second direction to correspond to the arrangement of the pressure relief mechanism of the battery cell 6.

[0091] In the above structure, by providing the avoidance hole 805, the internal substances of the battery cell 6 can be discharged smoothly when thermal runaway occurs, reducing interference and obstruction to the discharged substances, reducing the risk of combustion or explosion of the battery cell 6, and improving the reliability of battery operation.

[0092] In some embodiments of the present application, the number of the first reinforcing ribs 803 is multiple, the number of the second reinforcing ribs 804 is multiple, a fire-fighting cavity is defined between two adjacent first reinforcing ribs 803 and two adjacent second reinforcing ribs 804, and the avoidance hole 805 is connected to the fire-fighting cavity. In the above structure, by setting up the fire-fighting cavity, a space is provided for the substances discharged from the battery cell 6 due to thermal runaway, and the discharge is guided, thereby reducing the damage caused by the discharged substances to the surrounding battery cells 6 and reducing the risk of causing thermal runaway of consecutive battery cells 6.

[0093] In some embodiments of the present application, the battery device 2 further includes a bottom guard plate disposed on the side of the support plate 8 away from the accommodating space 53, the bottom guard plate is sealed and connected to the support plate 8, and a fire-fighting material is disposed in the fire-fighting cavity. The fire-fighting material needs to have good flame retardancy, heat absorption and corrosion resistance. Exemplarily, inorganic materials prepared from compounds such as silicate materials, potassium phosphate, ammonium phosphate, aluminum fluoride, PE (polyethylene), PP (polypropylene) and other polymer materials, and materials such as perfluorohexanone can be used to manufacture fire-fighting materials.

[0094] In the above structure, by providing a bottom guard plate, the damage to the battery cell 6 caused by the impact and knock on the bottom of the battery device 2 can be reduced, and the bottom guard plate can improve the overall structural strength of the battery device 2. The bottom guard plate is sealed and connected to the support plate 8, which improves the sealing performance of the accommodating space 53 and reduces the impact of moisture and impurities on the battery cell 6. In addition, firefighting materials are provided in the firefighting cavity to reduce the temperature of the discharged substances, reduce the risk of combustion or explosion of the discharged substances, and improve the stability of the operation of the battery cell 6.

[0095] In some embodiments of the present application, the fire-fighting material is bonded to the plate 801. In the above structure, the bonding connection is easy to operate and has high connection strength, which can reduce the risk of the fire-fighting material falling off and improve the effect of cooling and fire-fighting.

[0096] like Figure 5 , which is a schematic diagram of the structure of the support plate 8 provided in some other embodiments of the present application, Figure 5 The surface structure of the support plate 8 shown in FIG. 8 is the surface facing the battery cell 6 , and a corresponding support structure 802 is provided on the other surface of the support plate 8 .

[0097] In some embodiments of the present application, a first connecting hole 806 is provided on the plate body 801, a second connecting hole corresponding to the first connecting hole 806 is provided on the frame body 7, and the support plate 8 also includes a connecting member, which passes through the first connecting hole 806 and the second connecting hole in sequence to connect the support plate 8 to the frame body 7.

[0098] In the above structure, the plate body 801 and the frame body 7 are connected by a connecting piece, thereby improving the connection strength between the support plate 8 and the frame body 7 and the stability of the overall structure.

[0099] In some optional embodiments, the first connecting hole can be a circular through hole or a threaded hole with an internal thread. The connecting member includes a connecting bolt, and the second connecting hole is a bolt hole. By connecting the frame 7 and the support plate 8 with bolts, disassembly and maintenance are facilitated, and assembly efficiency is improved.

[0100] like Figure 6 as well as Figure 7 As shown, in some embodiments of the present application, the support plate 8 also includes an annular welding portion 807, which is arranged around the circumference of the plate body 801. Along the thickness direction of the plate body 801, the maximum size of the annular welding portion 807 is larger than the maximum size of the plate body 801, and the annular welding portion 807 is connected between the plate body 801 and the frame 7.

[0101] The annular welding portion 807 is a reinforcing member arranged 360° around the plate body 801. The annular welding portion 807 and the plate body 801 form a basin-like structure similar to a high outer and low inner structure. The annular welding portion 807 can be connected to the plate body 801 by welding, bonding or welding. The annular welding portion protrudes or increases in the thickness direction of the plate body 801, thereby increasing the material thickness and strength of the connection between the plate body 801 and the frame body 7. The design of the annular welding portion 807 enhances the connection strength between the support plate 8 and the frame body 7. Since a circle of reinforced structure is formed at the edge of the plate body 801, when subjected to external forces, these forces can be more effectively dispersed and resisted, thereby reducing the risk of fracture or failure at the connection between the plate body 801 and the frame body 7.

[0102] In the above structure, by providing the annular welding portion 807 , the contact area between the circumference of the plate body 801 and the frame body 7 is increased, thereby improving the connection strength and stability between the support plate 8 and the frame body 7 .

[0103] In some embodiments of the present application, the annular welding portion 807 and the plate body 801 are an integrally formed structure. Exemplarily, the annular welding portion 807 and the plate body 801 are formed by integral die casting.

[0104] The above technical solution improves the connection strength between the annular welding portion 807 and the plate body 801 , and improves the overall manufacturing efficiency of the support plate 8 and the assembly efficiency of the battery device 2 .

[0105] In some embodiments of the present application, the end surface of the annular welding portion 807 facing away from the battery cell 6 protrudes from the plate body 801, and the end surface of the annular welding portion 807 facing the battery cell 6 is flush with the plate body 801. In the above structure, one side of the annular welding portion 807 is protruded from the plate body 801, which can effectively utilize the space on the side of the plate body 801 facing away from the battery cell 6, and the other side of the annular welding portion 807 is flush with the plate body 801, which can reduce the interference of the annular welding portion 807 with the battery cell 6, thereby improving the structural stability in the accommodating space 53.

[0106] In some embodiments of the present application, a surface of one side of the annular welding portion 807 facing the frame 7 is concave to form a welding groove 808 .

[0107] The above structure further increases the surface area of ​​the side where the annular welding portion 807 contacts the frame 7, and more welding fusion points can be formed during the welding process, thereby enhancing the strength of the welded joint. The welding groove 808 can accommodate more welding material to form a more uniform and dense weld. Not only can the mechanical properties of the welded joint be improved, but also welding defects can be reduced, and the strength and stability of the connection between the support plate 8 and the frame 7 can be improved.

[0108] like Figures 8 to 10As shown, in some embodiments of the present application, a surface of one side of the frame body 7 facing the plate body 801 protrudes to form a connecting portion 701 , and the connecting portion 701 is connected to the annular welding portion 807 .

[0109] In the above structure, the protruding connection part 701 provides a clear positioning and support point for the welding process, making the assembly and welding process more efficient, thereby reducing the difficulty and cost of assembly and improving production efficiency. At the same time, it can reduce errors and deviations in the assembly process and ensure accurate docking and connection between the support plate 8 and the frame 7.

[0110] In some embodiments of the present application, the support structure 802 and the plate body 801 are manufactured by integral die casting. Integral die casting refers to a molding process in which a metal material (such as aluminum alloy) is melted at high temperature, pressed into a special mold by a high-pressure die casting machine, cooled and solidified in the mold, and then the molded casting is removed from the mold. The die casting process can form a complete component or product in one go. This technology realizes the one-time processing and assembly of multiple parts, and has the characteristics of high efficiency, low cost and high precision.

[0111] In the above technical solution, the support structure 802 and the plate body 801 are integrally die-casted to improve the manufacturing efficiency and molding accuracy of the support plate 8.

[0112] In some embodiments of the present application, the frame 7 and the support plate 8 are manufactured by integral die-casting. The frame 7 and the support plate 8 are manufactured by integral die-casting, which further reduces the assembly steps and improves the assembly efficiency of the battery device 2. In some optional embodiments, the battery device 2 includes: a battery cell 6, a frame 7 and a support plate 8. The support plate 8 and the frame 7 are enclosed together to form a receiving space 53 for accommodating the battery cell 6, and the support plate 8 includes a plate 801 and a support structure 802. The plate 801 is connected to the frame 7, and the support structure 802 protrudes from the side of the plate 801 away from the battery cell 6, wherein the support structure 802 and the plate 801 are an integrally formed structure. The support structure 802 includes a first reinforcing rib 803 extending along a first direction and a second reinforcing rib 804 extending along a second direction, and the first direction is arranged to intersect with the second direction. The first direction is the width direction of the battery cell 6, and the second direction is the length direction of the battery cell 6. The plate body 801 is provided with an avoidance hole 805, and the avoidance hole 805 is arranged at a position corresponding to the pressure relief mechanism of the battery cell 6. There are multiple first reinforcing ribs 803, and there are multiple second reinforcing ribs 804. A fire-fighting cavity is defined between two adjacent first reinforcing ribs 803 and two adjacent second reinforcing ribs 804, and the avoidance hole 805 is connected to the fire-fighting cavity. Fire-fighting materials are arranged in the fire-fighting cavity. The fire-fighting materials are bonded to the plate body 801. The support plate 8 also includes an annular welding portion 807, which is arranged around the circumference of the plate body 801. The extension length of the annular welding portion 807 along the thickness direction of the plate body 801 is greater than the thickness of the plate body 801, and the annular welding portion 807 is connected between the plate body 801 and the frame body 7. The annular welding portion 807 and the plate body 801 are an integrally formed structure. The surface of the annular welding portion 807 facing the frame body 7 is concave to form a welding groove 808.

[0113] The embodiment of the present application provides a box 5, including a frame 7 and a support plate 8. The support plate 8 and the frame 7 are enclosed together to form a storage space 53 for accommodating a battery cell 6. The support plate 8 includes a plate 801 and a support structure 802, and the plate 801 is connected to the frame 7. The support structure 802 protrudes from the side of the plate 801 away from the battery cell 6. Among them, the support structure 802 and the plate 801 are an integrally formed structure. The frame 7 and the support plate 8 are provided in the box 5 to provide support and stable space for the battery cell 6, and improve the stability of the operation of the battery cell 6. Among them, the plate 801 of the support structure 802 is used to support the battery cell 6, and the support structure 802 is used to structurally strengthen the local position of the plate 801, and improve the support strength and stability of the plate 801 to the battery cell 6. In particular, the support structure 802 is set as an integrally formed structure with the plate 801, which can further improve the connection strength between the support structure 802 and the plate 801, and improve the strength and stability of the support for the battery cell 6. Moreover, compared with manufacturing the support plate 8 by processing the profile, the one-piece structure can reduce the processing steps, improve the production efficiency and manufacturing accuracy. In summary, the above structure improves the support strength and stability of the support plate 8, reduces the risk of displacement or deformation of the battery cell 6 during operation, and thus improves the stability of the battery device 2.

[0114] The embodiment of the present application further provides an electrical device, which includes the box 5 in the above embodiment or the battery device 2 in the above embodiment, and the battery device 2 is used to provide electrical energy. The electrical device includes the box 5 or the battery device 2 in the above embodiment, so the technical effects of the above embodiment can also be achieved, which will not be described in detail here.

[0115] 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; Frame; as well as The support plate and the frame together form a storage space for accommodating the battery cell. The support plate includes a plate body and a support structure. The plate body is connected to the frame. The support structure protrudes from a side of the plate body away from the battery cell, wherein the support structure and the plate body are an integrally formed structure.

2. The battery device according to claim 1, characterized in that: The support structure includes a first reinforcing rib extending along a first direction and a second reinforcing rib extending along a second direction, wherein the first direction intersects with the second direction.

3. The battery device according to claim 2, characterized in that: The plate body is provided with an avoidance hole, and the avoidance hole is arranged corresponding to the position of the pressure relief mechanism of the battery cell.

4. The battery device according to claim 3, characterized in that: There are multiple first reinforcing ribs, and there are multiple second reinforcing ribs. A fire-fighting cavity is defined between two adjacent first reinforcing ribs and two adjacent second reinforcing ribs, and the avoidance hole is connected to the fire-fighting cavity.

5. The battery device according to claim 4, characterized in that: The battery device further comprises a bottom guard plate arranged on a side of the support plate away from the accommodating space, the bottom guard plate is sealedly connected to the support plate, and fire-fighting materials are arranged in the fire-fighting cavity.

6. The battery device according to claim 5, characterized in that: The fire-fighting material is bonded to the plate body.

7. The battery device according to any one of claims 1 to 6, characterized in that: The plate body is provided with a first connection hole, the frame body is provided with a second connection hole corresponding to the first connection hole, and the support plate further comprises a connection member, which passes through the first connection hole and the second connection hole in sequence to connect the support plate to the frame body.

8. The battery device according to any one of claims 1 to 6, characterized in that: The support plate also includes an annular welding portion, which is arranged around the circumference of the plate body. Along the thickness direction of the plate body, the maximum size of the annular welding portion is larger than the maximum size of the plate body, and the annular welding portion is connected between the plate body and the frame body.

9. The battery device according to claim 8, characterized in that: The annular welding portion and the plate body are an integrally formed structure.

10. The battery device according to claim 9, characterized in that: The end surface of the annular welding portion facing away from the battery cell protrudes from the plate body, and the end surface of the annular welding portion facing the battery cell is flush with the plate body.

11. The battery device according to claim 9, characterized in that: The surface of the annular welding portion on one side facing the frame is concave to form a welding groove.

12. The battery device according to any one of claims 9 to 11, characterized in that: The frame body protrudes from a surface of one side facing the plate body to form a connecting portion, and the connecting portion is connected to the annular welding portion.

13. The battery device according to any one of claims 1 to 6, characterized in that: The support structure and the plate body are manufactured in an integral die-casting manner.

14. The battery device according to any one of claims 1 to 6, characterized in that: The frame and the support plate are manufactured in an integrated die-casting manner.

15. A box, characterized in that: include: Frame; as well as The support plate and the frame together form a storage space for accommodating the battery cell. The support plate includes a plate body and a support structure. The plate body is connected to the frame. The support structure protrudes from a side of the plate body away from the battery cell, wherein the support structure and the plate body are an integrally formed structure.

16. An electrical equipment, characterized in that: The electrical equipment comprises the housing as claimed in claim 15 or the battery device as claimed in any one of claims 1 to 14, and the battery device is used to provide electrical energy.

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