Battery devices and electrical appliances

Abstract

This application discloses a battery device and an electrical device, relating to the field of battery technology. The battery device includes at least one battery cell and a battery tray. The battery tray includes a tray body and a support member. The tray body has an open receiving cavity, in which the battery cell is disposed. The support member is disposed on the tray body and is used to support the tray body. The tray body is a non-metallic part, and the support member is a metallic part. The tray body and the support member are integrally formed.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Technology

[0002] With increasing environmental pollution, the new energy industry is attracting more and more attention. Within the new energy industry, battery technology is a crucial factor in its development.

[0003] In related technologies, battery devices typically include a battery tray, in which individual battery cells are housed. Existing battery trays are not only difficult to manufacture, but also costly. Utility Model Content

[0004] The main purpose of this utility model is to provide a battery device and an electrical device, which aims to reduce the manufacturing difficulty and production cost of the battery tray in the battery device.

[0005] This application provides a battery device, which includes at least one battery cell and a battery tray. The battery tray includes a tray body and a support member. The tray body has an open receiving cavity, in which the battery cell is disposed. The support member is disposed on the tray body and is used to support the tray body. The tray body is a non-metallic part, and the support member is a metallic part. The tray body and the support member are integrally formed.

[0006] In the technical solution of this application embodiment, the battery tray includes a tray body and a support member. The tray body has an open receiving cavity to facilitate the placement of individual battery cells into the receiving cavity. The support member is disposed on the tray body to support the tray body, thereby increasing the structural strength of the tray body. Furthermore, the tray body is a non-metallic part, while the support member is a metallic part. The support member can be integrated with the tray body during the forming process. The integral molding of the tray body and the support member eliminates weak connection points, improves structural integrity, reduces connection processes, and saves connecting parts, thereby effectively simplifying the manufacturing process of the battery tray, improving the production efficiency of the battery tray, and reducing the manufacturing difficulty and production cost of the battery tray.

[0007] In some embodiments, the pallet body is an injection-molded part, and the pallet body wraps around at least a portion of the support member to connect the pallet body and the support member. In this embodiment, the pallet body is manufactured by injection molding, while traditional pallet bodies are usually manufactured by stamping multiple parts first, such as aluminum alloy stamping, and then welding them in stages, or by welding multiple steel plates together. This configuration simplifies and simplifies the manufacturing process of the pallet body in this embodiment, reducing manufacturing difficulty, improving production efficiency, and lowering production costs. Furthermore, since the pallet body wraps around at least a portion of the support member to form an integrated structure, the pallet body and support member are integrated by injection molding, resulting in a stronger connection, better stability, and lower manufacturing costs.

[0008] In some embodiments, the tray body encloses the support member, with a portion of the support member located at the bottom of the tray body and a portion located at the side of the tray body. In this embodiment, the tray body encloses the support member, meaning the entire support member is enclosed within it, eliminating the stress concentration problem of traditional welding points, resulting in a more uniform stress distribution on the battery tray and improving its rigidity. Furthermore, a portion of the support member supports the bottom of the tray body, while a portion supports the sides, thus protecting the bottom and sidewalls of the tray body. This enhances the structural strength of the battery tray and improves its protective performance for the individual battery cells.

[0009] In some embodiments, the bottom of the tray body partially covers the support members, and a portion of the support members is located on the outer side of the lower surface of the tray body. In this embodiment, a portion of the support members is located at the bottom of the tray body to support the bottom of the tray body, while a portion of the support members are exposed on the outer side of the bottom of the tray body to protect the bottom of the tray body. When the bottom of the tray body is subjected to external forces, such as in the event of a collision, the exposed support members can provide additional protection for the tray body, reduce the impact on the battery cells, reduce the risk of damage, and improve the reliability of the battery device.

[0010] In some embodiments, the support member is a one-piece die-cast part, or the support member is a welded part. In this embodiment, the support member is a one-piece die-cast part, which eliminates weld seams and additional connection points on the support member, thereby eliminating the stress concentration problem of traditional welding points, resulting in high production efficiency and high product precision; or, the support member is a welded part, which reduces the cost of manufacturing molds for individual parts, facilitates assembly and maintenance, and reduces manufacturing costs.

[0011] In some embodiments, the tray body includes a tray base and a tray frame. The tray frame is disposed around the periphery of the tray base and surrounds the tray base to form the receiving cavity. The tray base encloses at least a portion of the support member. In this embodiment, the tray frame surrounds the periphery of the tray base to form a receiving cavity with an opening, allowing the battery cell to be placed on the tray base through the opening. The tray base encloses at least a portion of the support member, meaning the support member can support the tray base, thereby improving the structural strength of the tray base and thus enhancing the stability and protection performance of the tray base for supporting the battery cell.

[0012] In some embodiments, the support member includes at least one first support beam and a plurality of second support beams. The first support beam extends along a first direction, and the plurality of second support beams are spaced apart along the first direction. The first support beam connects to the plurality of second support beams. The second support beams extend along a second direction, where the first direction intersects the second direction. The pallet bottom plate covers at least a portion of the first support beam and / or at least a portion of the second support beam. In this embodiment, the support member includes at least one first support beam and a plurality of second support beams. The first support beam connects to the plurality of second support beams, and the pallet bottom plate covers at least a portion of the first support beam and / or at least a portion of the second support beam. That is, the first support beam and / or the second support beam can support the pallet bottom plate, thereby improving the structural strength of the pallet bottom plate.

[0013] In some embodiments, the support member includes a first support beam and a plurality of second support beams. The pallet bottom plate wraps around at least a portion of the first support beam and at least a portion of the second support beams. Along the second direction, the first support beam is located in the middle of the pallet bottom plate. In this embodiment, the pallet bottom plate wraps around at least a portion of the first support beam and at least a portion of the second support beams, meaning that the first and second support beams can support the pallet bottom plate. The first support beam connects to the plurality of second support beams. The first support beam is located in the middle of the pallet bottom plate, where the bending moment is greatest. The first support beam provides bending stiffness to the middle region of the pallet bottom plate, reducing the sagging deformation of the pallet bottom plate and improving its structural strength.

[0014] In some embodiments, the support further includes a plurality of third support beams, with each end of the second support beam connected to one of the third support beams at opposite ends along the second direction. The third support beam extends from the end of the second support beam toward one side of the tray frame, and the tray frame encloses at least a portion of the third support beam. In this embodiment, the tray frame encloses at least a portion of the third support beam, meaning the third support beam can support the tray frame, thus improving the structural strength of the tray frame. Building upon the structural strength of the tray bottom plate improved by the first and / or second support beams supporting it, the third support beam further enhances the structural strength of the battery tray.

[0015] In some embodiments, the battery device further includes multiple mounting portions, one of which is connected to a third support beam. The mounting portion extends from one end of the third support beam away from the second support beam in a direction away from the receiving cavity. The mounting portion has mounting holes for a connector to pass through and secure the battery tray to the power device. In this embodiment, the support member further includes multiple mounting portions connected to the third support beam. The third support beam has high structural strength, improving the stability of the connection between the mounting portion and the power device. The mounting portions extend in a direction away from the receiving cavity, and the multiple mounting portions increase the load-bearing capacity of the battery tray. The mounting portions have mounting holes through which a connector can pass to connect to the power device, facilitating the stable fixation of the battery tray to the power device.

[0016] In some embodiments, the battery device further includes a mounting portion connected to the support member, and the battery device is mounted to the power-consuming device via the mounting portion. In this embodiment, the support member is a metal component with high structural strength. Connecting the battery device to the mounting portion via a high-strength support member helps improve the stability of the battery device installation.

[0017] In some embodiments, the mounting portion is provided with a groove, the opening of which faces away from the receiving cavity. This arrangement creates a hollow structure on the mounting portion, which not only reduces the weight of the support member but also forms a crumple zone to absorb energy. Furthermore, the groove opening facing away from the receiving cavity facilitates the processing of the groove, thereby simplifying the manufacturing process of the battery tray.

[0018] This application also proposes an electrical device that includes a battery device for storing or providing electrical energy.

[0019] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0022] Figure 2 This is an exploded view of the battery device according to some embodiments of this application;

[0023] Figure 3 This is a partial structural schematic diagram of a battery device according to some embodiments of this application;

[0024] Figure 4 for Figure 3 A structural diagram from another perspective;

[0025] Figure 5 for Figure 3 A schematic diagram of the exploded structure in the image;

[0026] Figure 6 for Figure 3 A sectional view of the structure in the middle;

[0027] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0028] Figure 8 This is a partial structural schematic diagram of the support member according to some embodiments of this application.

[0029] Explanation of icon numbers:

[0030] 1. Vehicles;

[0031] 10. Battery device;

[0032] 100. Battery cell;

[0033] 200. Battery tray; 210. Tray body; 211. Receiving cavity; 212. Tray bottom plate; 213. Tray frame; 220. Support component; 221. First support beam; 222. Second support beam; 223. Third support beam; 224. Mounting part; 225. Mounting hole; 226. Groove;

[0034] 300. Cover;

[0035] 400. Expansion beam;

[0036] 20. Controller;

[0037] 30. Motor.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] With the widespread application of batteries in energy storage power systems, electric vehicles, and other fields, such as energy storage power systems including hydropower, wind power, thermal power, and solar power plant energy storage systems; and electric vehicles including electric cars, electric motorcycles, and electric bicycles, people are paying particular attention to battery technology.

[0044] In related technologies, the battery device housing includes a battery tray and a cover. The cover and battery tray enclose a cavity, within which the individual battery cells are housed. Existing battery trays are typically made of aluminum or steel. Aluminum trays are constructed by welding extruded aluminum profiles, a complex welding process that is difficult to manufacture, resulting in low production efficiency and high production costs. Steel trays are constructed by welding multiple steel plates, leading to excessive structural strength and waste. Furthermore, the welding process is complex, production efficiency is low, the trays are heavy, and material costs are high. In other words, existing battery trays are not only difficult to manufacture but also expensive.

[0045] Based on the above considerations, in order to solve the problems of high manufacturing difficulty and high production cost of battery trays in existing battery devices, this application proposes a new battery device that can reduce the manufacturing difficulty and production cost of battery trays.

[0046] Furthermore, the aforementioned battery device may include multiple battery cells. These battery cells can be secondary or primary batteries, and can also be lithium-sulfur, sodium-ion, or magnesium-ion batteries, but are not limited to these. The shape of the battery cell can be cylindrical, flat, cuboid, or other shapes, and this application does not specifically limit the shape of the battery cell. Multiple battery cells can be connected in series, in parallel, or in a hybrid configuration of both series and parallel connections. Several battery cells connected in series, parallel, or in a hybrid configuration can form a battery module, and the flexible circuit board can at least be used to collect the voltage signal of the battery module composed of multiple battery cells.

[0047] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0048] For ease of explanation, the following embodiments will be described using a vehicle 1 as an example of an electrical device according to an embodiment of this application.

[0049] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1 provided in some embodiments of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 10 is installed inside vehicle 1, and the battery device 10 can be located at the bottom, front, or rear of vehicle 1. The battery device 10 can be used to power vehicle 1; for example, the battery device 10 can serve as the operating power source for vehicle 1. Vehicle 1 may also include a controller 20 and a motor 30. The controller 20 is used to control the battery device 10 to supply power to the motor 30, for example, to meet the power needs of vehicle 1 during starting, navigation, and driving.

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

[0051] Please see Figure 2 , Figure 2 This is an exploded view of a battery device 10 provided in some embodiments of this application. The battery device 10 includes a housing and battery cells 100, with the battery cells 100 housed within the housing. The housing provides space for the battery cells 100 and can have various structures.

[0052] In some embodiments, the housing may include a first part and a second part, which overlap each other, together defining a receiving space for accommodating a single battery cell. The second part may be a hollow structure open at one end, and the first part may be a plate-like structure, with the first part covering the open side of the second part so that the first and second parts together define the receiving space. Alternatively, both the first and second parts may be hollow structures open on one side, with the open side of the first part covering the open side of the second part. Of course, the housing formed by the first and second parts can be of various shapes, such as a cylinder, a cuboid, etc.

[0053] In some embodiments, the battery device includes a battery tray 200, which may be a first part or a second part.

[0054] In a battery device, there can be multiple battery cells, which can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple battery cells are connected in both series and parallel configurations. Multiple battery cells can be directly connected in series, parallel, or a combination thereof, and then the entire assembly of these battery cells is housed within a casing. Alternatively, the battery device can consist of multiple battery cells first connected in series, parallel, or a combination thereof to form battery modules, and then these modules are connected in series, parallel, or a combination thereof to form a whole, which is also housed within a casing. The battery device may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells.

[0055] Each battery cell can be a secondary or primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell can be cylindrical, flat, cuboid, or other shapes.

[0056] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. Current collectors without the positive active material layer protrude beyond those with the coating. These uncoated current collectors are stacked together to form the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. Current collectors without the negative active material layer protrude beyond those with the coating. These uncoated current collectors are stacked together to form the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon or silicon, etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure, and the embodiments of this application are not limited thereto.

[0057] The battery device in the embodiments of this application can be used in electrical devices such as vehicles, or can be installed in electrical devices that require an electrical box.

[0058] The structures in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0059] Please see Figures 3 to 5In one embodiment of this application, a battery device 10 is provided. The battery device 10 includes at least one battery cell 100 and a battery tray 200. The battery tray 200 includes a tray body 210 and a support member 220. The tray body 210 has an open receiving cavity 211, in which the battery cell 100 is disposed. The support member 220 is disposed on the tray body 210 and supports the tray body 210. The tray body 210 is a non-metallic component, and the support member 220 is a metallic component; the tray body 210 and the support member 220 are integrally formed.

[0060] The battery tray 200 is a component that carries the battery cell 100 and protects the battery cell 100. In the embodiments of this application, the battery tray 200 includes a tray body 210 and a support member 220. The tray body 210 has an open receiving cavity 211 in which the battery cell 100 is disposed. The opening direction of the receiving cavity 211 is not limited and can be upward or sideways.

[0061] The support member 220 supports the pallet body 210. The support member 220 may be entirely or partially located within the pallet body 210. The pallet body 210 is a non-metallic component, meaning it is made of non-metallic materials, including but not limited to plastics, ceramics, carbon fiber, resin, and glass fiber. The support member 220 is a metallic component, meaning it is made of metallic materials, including but not limited to aluminum, aluminum alloys, copper, iron, steel, and stainless steel. The pallet body 210 and the support member 220 are integrally molded structures. For example, if the pallet body 210 is made of plastic, it can be manufactured using injection molding, and the support member 220 can be integrated with the pallet body 210 during the molding process, making them an integrally molded structure.

[0062] In other words, there are no connecting parts between the tray body 210 and the support member 220 in this embodiment. This embodiment reduces the connection process between the tray body 210 and the support member 220. Compared with the battery trays in the prior art that are made of metal, the tray body 210 of this embodiment has good formability and can be formed into complex structures, thereby improving the overall performance of the battery device 10. For example, by optimizing the spatial layout inside the receiving cavity 211 of the tray body 210, the energy density of the battery cell 100 can be increased. Compared with metal materials, non-metallic materials are lighter, which helps to reduce the weight of the whole vehicle, thereby increasing the driving range of the vehicle 1. At the same time, the cost is lower and the manufacturing process is relatively simple, which helps to reduce production costs. In addition, the tray body 210 made of non-metallic materials has better heat insulation performance and corrosion resistance, which helps to keep the battery cell 100 operating within a suitable operating temperature range and can also effectively prevent the battery cell 100 from being corroded by the external environment.

[0063] In the technical solution of this application embodiment, the battery tray 200 includes a tray body 210 and a support member 220. The tray body 210 has an open receiving cavity 211 so that the battery cell 100 can be placed into the receiving cavity 211 from the opening. The support member 220 is disposed on the tray body 210 to support the tray body 210, thereby increasing the structural strength of the tray body 210. Furthermore, the tray body 210 is a non-metallic part, and the support member 220 is a metallic part. The support member 220 can be combined with the tray body 210 during the forming process. The integral forming of the tray body 210 and the support member 220 eliminates weak connection points, improves structural integrity, reduces connection processes, and saves connecting parts, thereby effectively simplifying the manufacturing process of the battery tray 200, improving the production efficiency of the battery tray 200, and reducing the manufacturing difficulty and production cost of the battery tray 200.

[0064] According to some embodiments of this application, optionally, the pallet body 210 is an injection-molded part, and the pallet body 210 covers at least a portion of the support member 220 so that the pallet body 210 is connected to the support member 220.

[0065] The pallet body 210 is an injection-molded part, meaning that the pallet body 210 is formed by injecting plastic into a mold through an injection process, and the pallet body 210 wraps part of the support member 220 during the molding process, or the pallet body 210 wraps all of the support member 220 during the molding process, so that the pallet body 210 and the support member 220 are integrally formed. This simplifies the production process of the pallet body 210. Compared with metal materials, the pallet body 210 in this embodiment is made of plastic material. Plastic material has low cost, which helps to reduce the production cost of the pallet body 210.

[0066] The tray body 210 is injection molded from plastic material, ensuring good flatness and dimensional accuracy, guaranteeing excellent sealing performance, and facilitating lightweight design and cost reduction of the battery tray 200. Furthermore, the tray body 210 eliminates the risk of sealing failure due to welding, eliminating the need for weld grinding and improving production efficiency. The plastic materials used in the tray body 210 include, but are not limited to, polycarbonate (PC), polyamide (PA), polybutylene terephthalate (PBT), and polypropylene (PP).

[0067] In this embodiment, the tray body 210 is manufactured by injection molding, while traditional battery trays are typically manufactured by stamping multiple parts first, such as aluminum alloy stamping, and then welding them in stages, or by welding multiple steel plates together. This design simplifies and simplifies the manufacturing process of the tray body 210, reducing manufacturing difficulty, improving production efficiency, and lowering production costs. Furthermore, since the tray body 210 encloses at least a portion of the support member 220 to form an integrated structure, the tray body 210 and the support member 220 are integrally injection molded, resulting in a more robust connection, better stability, and lower manufacturing costs. The battery tray 200 of this embodiment combines the advantages of plastic and metal materials, achieving lightweight, high strength, and good heat insulation and electromagnetic shielding performance.

[0068] Please see Figure 5 According to some embodiments of this application, optionally, the pallet body 210 has an upwardly opening receiving cavity 211. The pallet body 210 includes a pallet bottom plate 212 and a pallet frame 213. The pallet frame 213 is disposed around the periphery of the pallet bottom plate 212 and surrounds the pallet bottom plate 212 to form the receiving cavity 211. The pallet bottom plate 212 can be located at the bottom of the pallet body 210, and the pallet frame 213 can be located at the side of the pallet body 210.

[0069] According to some embodiments of this application, optionally, the pallet body 210 encloses the support member 220, with a portion of the support member 220 located at the bottom of the pallet body 210 and a portion of the support member 220 located at the side of the pallet body 210.

[0070] The pallet body 210 fully encloses the entire support member 220 within it. The bottom of the pallet body 210 partially encloses the support member 220, meaning the pallet bottom plate 212 encloses a portion of the support member 220; the sides of the pallet body 210 also partially enclose the support member 220, meaning the pallet frame 213 encloses a portion of the support member 220. In other words, in this embodiment, a portion of the support member 220 supports the pallet bottom plate 212, and a portion of the support member 220 supports the pallet frame 213. The support member 220 provides support and protection for the bottom and sides of the pallet body 210.

[0071] In this embodiment, the tray body 210 encloses the support member 220, that is, the tray body 210 completely encloses the support member 220 inside it, eliminating the stress concentration problem of traditional welding points, making the stress of the battery tray 200 evenly distributed, and improving the rigidity of the battery tray 200. In addition, part of the support member 220 supports the bottom of the tray body 210, and part of the support member 220 supports the sides of the tray body 210. That is, the support member 220 can protect the bottom and side walls of the tray body 210, thereby improving the structural strength of the battery tray 200 and thus improving the protective performance of the battery tray 200 for the battery cell 100.

[0072] Please see Figures 3 to 7 According to some embodiments of this application, optionally, the bottom of the pallet body 210 is wrapped with a support member 220, and a portion of the support member 220 is disposed on the outer side of the lower surface of the pallet body 210.

[0073] The tray body 210 partially encloses the support member 220 in a semi-enclosed manner. The bottom of the tray body 210 encloses part of the support member 220, that is, the tray bottom plate 212 encloses part of the support member 220. Part of the support member 220 is located on the outer side of the lower surface of the tray body 210, that is, part of the support member 220 is exposed below the tray bottom plate 212. This allows the support member 220 to effectively disperse and absorb external impact forces, reduce local stress concentration at the bottom of the tray body 210, and thus protect the battery cell 100 from damage.

[0074] In this embodiment, a portion of the support members 220 are disposed at the bottom of the tray body 210 to support the bottom of the tray body 210, and a portion of the support members 220 are exposed on the outer side of the bottom of the tray body 210 to protect the bottom of the tray body 210. When the bottom of the tray body 210 is subjected to external force, such as in the event of a collision, the exposed support members 220 can provide additional protection for the tray body 210, reduce the impact on the battery cell 100, reduce the risk of damage, and improve the reliability of the battery device 10.

[0075] According to some embodiments of this application, the support member 220 may optionally be an integral die-cast part, or the support member 220 may be a welded part.

[0076] The support component 220 is a one-piece die-cast part, that is, the support component 220 adopts the one-piece die-casting process, injecting metal into the mold and die-casting it in one go; or, the support component 220 is a welded part, that is, the support component 220 adopts the welded forming process, connecting and combining multiple individual metal parts into a complete support structure through welding.

[0077] In this embodiment, the support 220 is an integral die-cast part, which makes the support 220 free of welds and additional connection points, eliminating the stress concentration problem of traditional welding points, resulting in high production efficiency and high product precision; or, the support 220 is a welded part, which has low mold cost for individual parts, convenient assembly and maintenance, and low manufacturing cost.

[0078] Please see Figures 5 to 7 According to some embodiments of this application, optionally, the pallet body 210 includes a pallet bottom plate 212 and a pallet frame 213, the pallet frame 213 is disposed on the periphery of the pallet bottom plate 212 and surrounds the pallet bottom plate 212 to form a receiving cavity 211; the pallet bottom plate 212 covers at least a portion of the support member 220.

[0079] The tray base plate 212 is located at the bottom of the battery assembly 10, and the tray frame 213 is located around the tray base plate 212. The tray frame 213 and the tray base plate 212 enclose a receiving cavity 211 with an upward opening, and the battery cell 100 is disposed in the receiving cavity 211. The tray base plate 212 covers part of the support member 220, or the tray base plate 212 covers the entire support member 220, so that the support member 220 can support the tray base plate 212, that is, can support and protect the battery cell 100 in the receiving cavity 211. The tray frame 213 includes multiple side plates, which are connected in sequence to form the tray frame 213.

[0080] Please see Figures 5 to 7 According to some embodiments of this application, optionally, the tray bottom plate 212 covers a portion of the support member 220, and the tray frame 213 covers a portion of the support member 220. With this configuration, the support member 220 can support and protect the tray bottom plate 212 and the tray frame 213, thereby improving the structural strength of the battery tray 200, and thus improving the protective performance of the battery tray 200 for the battery cells 100.

[0081] In this embodiment, the tray frame 213 surrounds the periphery of the tray base plate 212 to form an accommodating cavity 211 with an opening. The battery cell 100 can be placed on the tray base plate 212 through the opening. The tray base plate 212 covers at least a portion of the support member 220, that is, the support member 220 can support the tray base plate 212 to improve the structural strength of the tray base plate 212, thereby improving the support stability and protection performance of the tray base plate 212 for the battery cell 100.

[0082] Please see Figures 3 to 5 According to some embodiments of this application, optionally, the support member 220 includes at least one first support beam 221 and a plurality of second support beams 222. The first support beam 221 extends along a first direction, and the plurality of second support beams 222 are spaced apart along the first direction. The first support beam 221 connects to the plurality of second support beams 222, and the second support beams 222 extend along a second direction. The first direction intersects the second direction, and the pallet bottom plate 212 covers at least a portion of the first support beam 221 and / or at least a portion of the second support beam 222.

[0083] In this embodiment, the specific direction of the first direction is not limited, for example, but not limited to: the first direction being the length direction of the battery device 10, or the first direction being the width direction of the battery device 10. The first direction intersects with the second direction, and the second direction forms an angle with the first direction. The size of the angle can be an acute angle, a right angle, or an obtuse angle, and is not specifically limited here. In this embodiment, as... Figure 4 and Figure 5 As shown, the first direction is the length direction of the battery device 10, the second direction is the width direction of the battery device 10, and the second direction is perpendicular to the first direction.

[0084] The number of first support beams 221 can be one, two, or more, depending on the size of the pallet bottom plate 212. Multiple second support beams 222 are arranged at intervals along a first direction. The first support beams 221 connect to the multiple second support beams 222. The distance between two adjacent second support beams 222 can be set as needed. The length of the first support beam 221 is adapted to the length of the pallet body 210 along the first direction, and the length of the second support beam 222 is adapted to the length of the pallet body 210 along the second direction. For example, the length of the first support beam 221 is approximately equal to the length of the pallet body 210 along the first direction, and the length of the second support beam 222 is approximately equal to the length of the pallet body 210 along the second direction.

[0085] The pallet bottom plate 212 covers at least a portion of the first support beam 221 and / or at least a portion of the second support beam 222, that is, the pallet bottom plate 212 covers part or the entire first support beam 221; and / or, the pallet bottom plate 212 covers part or the entire second support beam 222. Supporting the pallet bottom plate 212 with the first support beam 221 and / or the second support beam 222 helps to improve the structural strength of the pallet bottom plate 212.

[0086] The first support beam 221 and the multiple second support beams 222 can be integrally die-cast, or the first support beam 221 and the multiple second support beams 222 can be assembled by welding.

[0087] In this embodiment, the support member 220 includes at least one first support beam 221 and a plurality of second support beams 222. The first support beam 221 connects to the plurality of second support beams 222. The pallet bottom plate 212 covers at least a portion of the first support beam 221 and / or at least a portion of the second support beams 222. That is, the first support beam 221 and / or the second support beams 222 can support the pallet bottom plate 212, thereby improving the structural strength of the pallet bottom plate 212.

[0088] Please see Figure 4 According to some embodiments of this application, optionally, the support member 220 includes a first support beam 221 and a plurality of second support beams 222, the pallet bottom plate 212 wraps around at least a portion of the first support beam 221 and at least a portion of the second support beams 222, and the first support beam 221 is disposed in the middle of the pallet bottom plate 212 along the second direction.

[0089] A first support beam 221 connects to multiple second support beams 222. The first support beam 221 and the multiple second support beams 222 can support the pallet bottom plate 212, which helps to disperse the impact force, avoid stress concentration on the support member 220, and improve the support stability of the pallet bottom plate 212.

[0090] In this embodiment, the pallet bottom plate 212 encloses at least a portion of the first support beam 221 and at least a portion of the second support beam 222, that is, the first support beam 221 and the second support beam 222 can support the pallet bottom plate 212, and the first support beam 221 connects multiple second support beams 222. The first support beam 221 is located in the middle of the pallet bottom plate 212, and the bending moment is the largest in the middle area of ​​the pallet bottom plate 212. The first support beam 221 provides bending stiffness to the middle area of ​​the pallet bottom plate 212, reduces the sagging deformation of the pallet bottom plate 212, and improves the structural strength of the pallet bottom plate 212.

[0091] Please see Figures 6 to 8According to some embodiments of this application, optionally, the support member 220 further includes a plurality of third support beams 223, the two ends of the second support beam 222 along the second direction are respectively connected to a third support beam 223, the third support beam 223 bends and extends from the end of the second support beam 222 toward one side of the pallet frame 213, and the pallet frame 213 wraps around at least a portion of the third support beam 223.

[0092] The pallet frame 213 encloses at least a portion of the third support beam 223, that is, the pallet frame 213 partially encloses the third support beam 223, or the pallet frame 213 encloses the entire third support beam 223, and the third support beam 223 can support and protect the pallet frame 213. The third support beam 223 and the second support beam 222 can be integrally die-cast, or the third support beam 223 and the second support beam 222 can be assembled by welding.

[0093] In this embodiment, the tray frame 213 encloses at least a portion of the third support beam 223, meaning that the third support beam 223 can support the tray frame 213, thereby improving the structural strength of the tray frame 213. Based on the structural strength of the tray bottom plate 212 being improved by the first support beam 221 and / or the second support beam 222 supporting the tray bottom plate 212, the third support beam 223 further improves the structural strength of the battery tray 200.

[0094] Please see Figures 6 to 8 According to some embodiments of this application, optionally, the battery device 10 further includes a plurality of mounting portions 224, one mounting portion 224 being connected to a third support beam 223, the mounting portion 224 extending from the end of the third support beam 223 away from the second support beam 222 in a direction away from the receiving cavity 211, the mounting portion 224 being provided with mounting holes 225, the mounting holes 225 being used for the connector to pass through to fix the battery tray 200 to the power device.

[0095] The mounting portion 224 is used for mounting and connecting to an electrical device, for example, mounting portion 224 is mounted and connected to a vehicle frame. Multiple mounting portions 224 are provided along the second direction on opposite sides of the tray body 210, thus enabling mounting of the battery device 10 on both sides of the battery tray 200, which helps improve the stability of the battery device 10. The mounting portions 224 can extend horizontally, thereby improving the stability of the battery device 10 installation. The mounting portion 224 and the third support beam 223 can be integrally die-cast, or the mounting portion 224 and the third support beam 223 can be assembled by welding.

[0096] The specific type of electrical device is not limited. In one embodiment, the electrical device includes a vehicle frame. The mounting portion 224 is provided with mounting holes 225, which can extend through opposite ends of the mounting portion 224 along the height direction. This allows a connector to pass through the mounting holes 225 to fix the battery tray 200 to the vehicle frame, thereby improving the stability of the battery device 10 mounted on the vehicle frame. Exemplarily, the connector is a bolt.

[0097] In this embodiment, the battery device 10 further includes multiple mounting portions 224, which are connected to a third support beam 223. The third support beam 223 has high structural strength and improves the stability of the connection between the mounting portions 224 and the power device. The mounting portions 224 bend and extend in a direction away from the receiving cavity 211. The multiple mounting portions 224 improve the load-bearing capacity of the battery tray 200. The mounting portions 224 are provided with mounting holes 225, through which connectors can pass to connect to the power device, facilitating the stable fixing of the battery tray 200 to the power device.

[0098] According to some embodiments of this application, optionally, the height of the third support beam 223 is less than the height of the pallet frame 213; and / or, at least part of the mounting portion 224 is located below the top of the pallet frame 213. This arrangement ensures that the height of the mounting portion 224 is lower than the height of the pallet frame 213, and that the mounting portion 224 is located on the outside of the pallet frame 213 to facilitate connection and fixation of the mounting portion 224 to the electrical device.

[0099] According to some embodiments of this application, optionally, the support member 220 includes at least one first support beam 221, a plurality of second support beams 222, and a plurality of third support beams 223. The battery device 10 includes a plurality of mounting parts 224, which are connected to the support member 220 to form a frame structure. Both the mounting parts 224 and the support member 220 are made of metal, which can provide good electromagnetic shielding performance and prevent electromagnetic interference from affecting the battery cell 100. The support member 220 can also reduce the vibration of the battery device 10 during vehicle 1 operation, and improve the service life and performance stability of the battery cell 100.

[0100] According to some embodiments of this application, optionally, the battery device 10 further includes a mounting portion 224, which is connected to the support member 220, and the battery device is mounted on the power-consuming device through the mounting portion 224.

[0101] The connection method between the mounting part 224 and the support member 220 is not limited, for example but not limited to: the mounting part 224 and the support member 220 are integrally die-cast, or the mounting part 224 and the support member 220 are combined by welding process.

[0102] The mounting part 224 is used to mount the battery device 10 to the power device. In this embodiment, the support member 220 is a metal part with high structural strength. The connection between the support member 220 with the mounting part 224 and the battery device 10 is beneficial to improve the stability of the installation.

[0103] Please see Figure 8 According to some embodiments of this application, optionally, the mounting part 224 is provided with a groove 226, and the groove 226 is opened in the direction away from the receiving cavity 211.

[0104] The groove 226 can be opened horizontally towards the outside of the receiving cavity 211. The groove 226 is connected to the mounting hole 225. This not only helps to reduce the weight of the mounting part 224, but also makes it easier to process the groove 226.

[0105] In this embodiment, by providing a groove 226 on the mounting part 224, a hollow structure is formed on the mounting part 224, which not only reduces the weight of the support member 220, but also forms a collapse zone to absorb energy. Furthermore, the groove opening of the groove 226 is opened in the direction away from the receiving cavity 211, which facilitates the processing of the groove 226 and simplifies the manufacturing process of the battery tray 200.

[0106] Optionally, according to some embodiments of this application, the battery device 10 may further include an expansion beam 400 disposed within the receiving cavity 211. The expansion beam 400 may be disposed on the tray bottom plate 212, and is used to confine the battery cell 100 when it expands, thereby improving the safety of the battery cell 100 during use.

[0107] According to some embodiments of this application, a battery device 10 is provided. The battery device 10 includes at least one battery cell 100 and a battery tray 200. The battery tray 200 includes a tray body 210 and a support member 220. The tray body 210 has an open receiving cavity 211, in which the battery cell 100 is disposed. The support member 220 is disposed on the tray body 210 and supports the tray body 210. The tray body 210 is a non-metallic part, and the support member 220 is a metallic part; the tray body 210 and the support member 220 are integrally formed. The tray body 210 is an injection-molded part, and the tray body 210 covers at least a portion of the support member 220 to connect the tray body 210 and the support member 220. The bottom of the tray body 210 covers a portion of the support member 220, and a portion of the support member 220 is disposed on the outer side of the lower surface of the tray body 210. The support member 220 is an integrally die-cast part, or the support member 220 is a welded part. The pallet body 210 includes a pallet bottom plate 212 and a pallet frame 213. The pallet frame 213 is disposed around the periphery of the pallet bottom plate 212 and surrounds the pallet bottom plate 212 to form a receiving cavity 211. The pallet bottom plate 212 covers at least a portion of the support member 220. The support member 220 includes at least one first support beam 221 and a plurality of second support beams 222. The first support beam 221 extends along a first direction, and the plurality of second support beams 222 are spaced apart along the first direction. The first support beam 221 connects to the plurality of second support beams 222. The second support beams 222 extend along a second direction, and the first direction intersects with the second direction. The pallet bottom plate 212 covers at least a portion of the first support beam 221 and at least a portion of the second support beam 222. Along the second direction, the first support beam 221 is located in the middle of the pallet bottom plate 212. The support member 220 also includes a plurality of third support beams 223. The two ends of the second support beam 222 along the second direction are respectively connected to a third support beam 223. The third support beam 223 extends from the end of the second support beam 222 toward one side of the tray frame 213, and the tray frame 213 encloses at least a portion of the third support beam 223. The battery device 10 also includes a plurality of mounting portions 224. One mounting portion 224 is connected to a third support beam 223. The mounting portion 224 extends from the end of the third support beam 223 away from the second support beam 222 in a direction away from the receiving cavity 211. The mounting portion 224 has mounting holes 225 for a connector to pass through to fix the battery tray 200 to the power device. The mounting portion 224 has a groove 226, the opening of which faces away from the receiving cavity 211.

[0108] This application also proposes an electrical device including a battery device 10. The specific structure of the battery device 10 is as described in the above embodiments. Since this electrical device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here. The battery device 10 is used to store or provide electrical energy. This battery device 10 can reduce the manufacturing difficulty and production cost of the battery tray 200. The electrical device can be used for electric vehicles, electric motorcycles, electric bicycles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc.

[0109] 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 by, include: At least one battery cell; A battery tray includes a tray body and a support member. The tray body has an open receiving cavity in which a single battery cell is disposed. The support member is disposed on the tray body and is used to support the tray body. The tray body is a non-metallic component, and the support member is a metallic component. The tray body and the support member are integrally formed.

2. The battery device of claim 1, wherein The pallet body is an injection-molded part, and the pallet body wraps around at least a portion of the support member so that the pallet body is connected to the support member.

3. The battery device of claim 2, wherein The pallet body encloses the support member, with a portion of the support member located at the bottom of the pallet body and a portion of the support member located at the side of the pallet body.

4. The battery device of claim 2, wherein The bottom of the tray body is partially covered by the support member, and a portion of the support member is located on the outer side of the lower surface of the tray body.

5. The battery device of claim 2, wherein The support component is either a one-piece die-cast part or a welded part.

6. The battery device according to any one of claims 1 to 5, wherein The pallet body includes a pallet base plate and a pallet frame. The pallet frame is disposed around the periphery of the pallet base plate and surrounds the pallet base plate to form the receiving cavity. The pallet base plate covers at least a portion of the support member.

7. The battery device of claim 6, wherein The support includes at least one first support beam and a plurality of second support beams. The first support beam extends along a first direction, and the plurality of second support beams are spaced apart along the first direction. The first support beam connects to the plurality of second support beams. The second support beams extend along a second direction, and the first direction intersects with the second direction. The bottom plate of the pallet covers at least a portion of the first support beam and / or at least a portion of the second support beam.

8. The battery device of claim 7, wherein, The support includes a first support beam and a plurality of second support beams. The pallet bottom plate covers at least a portion of the first support beam and at least a portion of the second support beams. Along the second direction, the first support beam is located in the middle of the pallet bottom plate.

9. The battery device of claim 7, wherein The support also includes a plurality of third support beams, wherein the two ends of the second support beam along the second direction are respectively connected to one of the third support beams, and the third support beams are bent and extended from the ends of the second support beams toward one side of the pallet frame, and the pallet frame covers at least a portion of the third support beams.

10. The battery device of claim 9, wherein The battery device also includes multiple mounting parts, one of which is connected to a third support beam. The mounting part extends from the end of the third support beam away from the second support beam in a direction away from the receiving cavity. The mounting part is provided with mounting holes for a connector to pass through and fix the battery tray to the power device.

11. The battery device of claim 1, wherein The battery device also includes a mounting part, which is connected to the support member, and the battery device is installed on the power-consuming device through the mounting part.

12. The battery device according to claim 10 or 11, wherein The mounting part is provided with a groove, and the groove opening is opened in the direction away from the receiving cavity.

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

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