Battery device, box body and electric device

Abstract

The utility model discloses a battery device, a box body and a power utilization device, the battery device comprises the box body, the box body comprises a frame, and the inner side of the frame defines an accommodating cavity for accommodating a battery monomer; the bottom protection plate is arranged on the side, deviating from the containing cavity, of the frame in the first direction, the first direction is the height direction of the box body, and the bottom protection plate is connected with the frame in a fastened mode through a fastener; the shielding structure is fixedly connected with the frame, a protection space is formed between the shielding structure and the bottom protection plate, the fastener comprises a protruding part, and the protruding part is arranged outside the bottom protection plate in a protruding mode and arranged in the protection space. According to the battery device, by arranging the shielding structure, when the bottom of the vehicle is impacted or scratched, the fastener can be effectively prevented from being directly stressed, so that the probability that the fastener is damaged or loosened can be reduced, and the airtight reliability of the battery device can be improved.

Description

Technical Field

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

[0002] During the battery production process, bolts are often used at the connection points between the bottom guard plate and the battery frame. Part of the bolt head of the bolt connection will extend out of the bottom guard plate. Therefore, when the vehicle is driving on a rough road and the bottom of the battery is scratched or hit, force may be applied to the bolt head, causing the bolt to deform or loosen, which will lead to failure of the airtightness of the bolt locking interface, thereby affecting the airtightness of the battery device. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application is to propose a battery device that can effectively prevent the fasteners from being directly stressed, thereby reducing the probability of fastener damage or loosening, thereby improving the airtight reliability of the battery device.

[0004] The application also proposes a box.

[0005] The present application also provides an electrical device having the battery device.

[0006] In the first aspect, an embodiment of the present application provides a battery device, which includes a box body, and the box body includes: a frame, the inner side of the frame defines a accommodating cavity for accommodating a battery cell; a bottom guard plate, the bottom guard plate is arranged on a side of the frame away from the accommodating cavity in a first direction, the first direction is the height direction of the box body, and the bottom guard plate is fastened to the frame by fasteners; a shielding structure, the shielding structure is fixedly connected to the frame, a protective space is formed between the shielding structure and the bottom guard plate, and the fastener includes a protrusion, the protrusion is protruding outside the bottom guard plate, and is arranged in the protective space.

[0007] In the above technical solution, by providing a shielding structure, when the bottom of the vehicle is impacted or scratched, the fasteners can be effectively prevented from being directly subjected to force, thereby reducing the probability of fastener damage or loosening, thereby improving the airtight reliability of the battery device.

[0008] In some embodiments, the shielding structure is integrally formed with the frame.

[0009] In the above technical solution, by setting the shielding structure and the frame to be integrally formed, the use of parts can be reduced or the process steps can be simplified, thereby increasing the assembly rate of the box and reducing the production cost of the entire box; at the same time, the structural strength of the shielding structure can be improved, thereby improving the protective effect of the shielding structure, thereby further reducing the probability of fasteners being scratched, reducing the probability of fastener failure, and improving the airtightness of the box.

[0010] In some embodiments, the shielding structure cooperates with the frame to define an opening connected to the protection space, and the opening is arranged toward the inner side of the accommodating cavity in a second direction, wherein the second direction intersects with the first direction.

[0011] In the above technical solution, a shielding structure is provided to cooperate with the frame to define an opening connected to the protective space, and the opening is arranged toward the inner side of the accommodating cavity in the second direction, so that the part of the fastener extending beyond the bottom guard plate can be wrapped in multiple directions, thereby further enhancing the protection of the fastener; at the same time, the gap at the connection position between the bottom guard plate and the frame can be shielded from the side of the box body, thereby preventing side water flow from entering the bottom guard plate through the gap, thereby effectively reducing the probability of the foam in the bottom guard plate being impacted by water, thereby reducing the probability of foam sealing failure.

[0012] In some embodiments, one end of the shielding structure is connected to the frame, and the other end of the shielding structure extends along a first direction toward a side away from the frame and extends along a second direction toward the inner side of the accommodating cavity, wherein the second direction intersects with the first direction.

[0013] In the above technical solution, by setting one end of the shielding structure to be connected to the frame, and the other end of the shielding structure to extend along the first direction toward the side away from the frame, and extend along the second direction toward the inner side of the accommodating cavity, the structure of the shielding structure can be simplified, thereby reducing the production difficulty of the shielding structure and reducing the production cost of the shielding structure.

[0014] In some embodiments, the shielding structure includes: a first shielding portion, a first end of the first shielding portion is connected to the frame, and a second end of the first shielding portion extends along a first direction toward a side away from the frame; a second shielding portion, a first end of the second shielding portion is connected to the second end of the first shielding portion, and a second end of the second shielding portion extends along a second direction toward the inner side of the accommodating cavity, and at least a portion of the second shielding portion is located on a side of the fastener away from the accommodating cavity in the first direction, wherein the second direction intersects with the first direction.

[0015] In the above technical solution, by providing the first shielding portion and the second shielding portion, it is possible to shield the gap at the connection position between the bottom guard plate and the frame, prevent side water flow from entering the bottom guard plate through the gap, and thus effectively reduce the probability of the foam in the bottom guard plate being impacted by water, thereby reducing the probability of foam sealing failure; at the same time, it is also possible to protect the fasteners from both below and from the side, thereby further reducing the probability of the fasteners being directly subjected to external collisions or scratches; in addition, when removing and installing the bottom guard plate, the shielding component can also play a bearing role on the bottom guard plate, thereby improving the convenience of installation and disassembly of the bottom guard plate, improving the maintenance rate of the battery device, and reducing the maintenance cost of the battery device.

[0016] In some embodiments, the second shielding portion is a horizontally arranged flat plate.

[0017] In the above technical solution, by setting the second shielding portion as a horizontally arranged flat plate, the manufacturing difficulty of the shielding structure can be reduced, and thus the production efficiency of the shielding structure can be improved and the production cost of the shielding structure can be reduced; at the same time, the load-bearing stability of the second shielding portion can also be improved, thereby improving the stability of the bottom guard plate during installation and disassembly, and thus improving the operation reliability of the operator.

[0018] In some embodiments, in the projection plane perpendicular to the first direction, the projection of the fastener falls within the projection range of the second shielding portion.

[0019] In the above technical solution, by making the projection of the fastener fall within the projection range of the second shielding portion in the projection plane perpendicular to the first direction, the second shielding portion can cover the fastener, and thus can protect the fastener, effectively reducing the probability that the fastener is directly collided or scratched by the outside world, thereby reducing the probability that the fastener is deformed and improving the airtight reliability of the box body.

[0020] In some embodiments, the second shielding portion is formed with a through hole that penetrates the second shielding portion along the axial direction of the fastener, and the diameter of the through hole is larger than the maximum outer diameter of the fastener.

[0021] In the above technical solution, by providing the through hole, it is beneficial to the installation and disassembly of the fastener, thereby improving the convenience of assembling and disassembling the box body.

[0022] In some embodiments, the diameter dimension of the through hole is 21 mm - 25 mm.

[0023] In the above technical solution, by setting the diameter dimension of the through hole to be 21 mm - 25 mm, the diameter of the through hole will not be too large to cause a reduction in the structural strength of the second shielding portion, and thus the risk of deformation of the second shielding portion due to collision can be reduced, thereby improving the protection effect of the second shielding portion on the fastener; at the same time, the diameter of the through hole will not be too small, and thus it is beneficial to install and disassemble the fastener using tools, thereby improving the assembly and disassembly rate of the box body.

[0024] In some embodiments, the through hole penetrates the edge of the second end of the second shielding portion.

[0025] In the above technical solution, by setting the through hole to penetrate the edge of the second end of the second shielding portion, the convenience of assembling and disassembling the box body can be further improved; at the same time, when the second shielding portion is displaced toward the fastener side due to external impact or collision, it can also avoid the fastener, thereby further reducing the possibility of collision between the second shielding portion and the fastener.

[0026] In some embodiments, the frame includes: a main beam, an inner side of which defines a receiving cavity; and a mounting beam connected to a side of the main beam facing away from the receiving cavity in a second direction, wherein the second direction intersects with the first direction.

[0027] In the above technical solution, by providing a frame including a main beam and a mounting beam, the box body can protect the battery cells and also meet the requirement of installing the battery device on a vehicle.

[0028] In some embodiments, the shielding structure is connected to a side of the main beam facing away from the accommodating cavity in the first direction, and one end of the shielding structure is connected to a side of the main beam close to the mounting beam.

[0029] In the above technical solution, a shielding structure is provided to be connected to the side of the main beam that is away from the accommodating cavity in the first direction, and one end of the shielding structure is connected to the side of the main beam close to the mounting beam, so that the shielding structure can protect the fasteners from the side and bottom, thereby further reducing the probability of fastener failure; at the same time, the shielding structure can also shield the gap between the bottom guard plate and the frame, thereby effectively reducing the probability of the foam in the bottom guard plate being impacted by water and reducing the probability of foam sealing failure.

[0030] In some embodiments, there are multiple fasteners, and the multiple fasteners are arranged at intervals along the circumference of the frame, and the shielding structure extends along the circumference of the frame.

[0031] In the above technical solution, by providing a plurality of fasteners arranged at intervals along the circumference of the frame, the connection tightness of the frame can be improved, thereby improving the airtight reliability of the battery device.

[0032] In some embodiments, the shielding structure extends in a ring shape along the circumference of the frame.

[0033] In this embodiment, the shielding structure is arranged to extend in a ring shape along the circumference of the frame. While satisfying the shielding structure's protection effect on the fasteners, it can also simplify the structure of the shielding structure and the steps of connecting the shielding structure with the frame, thereby reducing the production cost of the entire box and improving the production rate of the box.

[0034] In a second aspect, an embodiment of the present application further provides a box, which is a box in the battery device according to the first aspect of the present application.

[0035] In the above technical solution, by providing a box body, multiple battery cells can be protected and assembled, and impurities can be prevented from entering the installation cavity to damage the battery cells, thereby improving the reliability of the battery device.

[0036] In a third aspect, an embodiment of the present application further provides an electrical device, including the battery device according to the first aspect of the present application, and the battery device is used to provide electrical energy.

[0037] In the above technical solution, by providing the battery of the second aspect embodiment, the overall performance of the electrical device is improved.

[0038] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0039] Figure 1 is a schematic diagram of a vehicle according to an embodiment of the present application;

[0040] Figure 2 is a schematic diagram of a battery device according to an embodiment of the present application;

[0041] Figure 3 is Figure 2 an exploded view of the battery device shown in

[0042] Figure 4 is Figure 3 a schematic diagram of the box shown in

[0043] Figure 5 is a cross-sectional view along the A-A line shown in Figure 3

[0044] Figure 6 is a partial cross-sectional view of a battery device according to another embodiment of the present application;

[0045] Figure 7 is a connection schematic diagram of a frame and an occlusion structure at an angle according to an embodiment of the present application;

[0046] Figure 8 is a connection schematic diagram of a frame and an occlusion structure at another angle according to an embodiment of the present application;

[0047] Figure 9 is a connection schematic diagram of a frame and an occlusion structure at yet another angle according to an embodiment of the present application;

[0048] Figure 10 is a connection schematic diagram of a frame and an occlusion structure at still another angle according to an embodiment of the present application.

[0049] Reference Signs:

[0050] 1, vehicle;

[0051] 1000, battery device;

[0052] 100, box;​

[0053] 10. Frame; 101. Accommodating cavity; 11. Main body beam; 111. Extension part; 12. Installation beam;

[0054] 20. Bottom guard plate;

[0055] 30. Shielding structure; 301. Protection space; 31. First shielding part; 32. Second shielding part; 321. Through hole;

[0056] 40. Fastener; 41. Protrusion; 50. Cover plate; 60. Bottom plate;

[0057] 200. Battery cell;

[0058] 2000. Controller; 3000. Motor. Detailed implementation manners

[0059] The embodiments of the technical solution of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled 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" and any variations thereof in the description of the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0061] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality of" means more than two unless otherwise specifically defined.

[0062] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0063] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0064] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two).

[0065] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the embodiments of the present application.

[0066] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside 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 specific circumstances.

[0067] Currently, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydraulic, thermal, wind, and solar power stations, but also widely used in electric transportation such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also continuously increasing.

[0068] During the battery production process, bolt connections are mostly used at the connection positions between the bottom guard plate and the battery frame. Among them, part of the bolt head of the bolt connection will protrude from the bottom guard plate. Therefore, when the vehicle is driving on a rough road and the bottom of the battery is scratched or impacted, a force may act on part of the bolt head, which may cause the bolt to deform or loosen, and further lead to the airtight failure of the bolt locking interface, thus affecting the airtightness of the battery device.

[0069] Based on the above considerations, in order to solve the problem that the bolts are deformed or loosened due to scratches on the bottom of the vehicle, which in turn causes the airtightness failure of the bolt locking interface and affects the airtightness of the battery device, the present application proposes a battery device, which includes a box body, and the box body includes: a frame, a bottom guard plate and a shielding structure. The inner side of the frame defines a receiving cavity for receiving a battery cell; the bottom guard plate is arranged on the side of the frame away from the receiving cavity in a first direction, and the first direction is the height direction of the box body. The bottom guard plate is fastened to the frame through a fastener; the shielding structure is fixedly connected to the frame, and a protective space is formed between the shielding structure and the bottom guard plate. The fastener includes a protrusion, which is protruding outside the bottom guard plate and is arranged in the protective space. In this way, when the bottom of the vehicle is impacted or scratched, the shielding structure can protect the fastener, thereby effectively preventing the fastener from being directly stressed, reducing the probability of damage or loosening of the fastener, and thus improving the airtight reliability of the battery device.

[0070] The box disclosed in the embodiment of the present application can be used for an electric device using a battery as a power source or various energy storage systems using a battery as an energy storage element. The electric device can be, but is not limited to, a mobile phone, a tablet, a laptop, 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.

[0071] For the convenience of description, the following embodiments are described by taking a vehicle 1 as an example of an electrical device in an embodiment of the present application.

[0072] Reference Figure 1 , Figure 1 Schematic diagram of vehicle 1 of some embodiments of the present application. Vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery is provided inside the vehicle 1, and the battery may be provided at the bottom, head or tail of the vehicle 1. The battery may be used to power the vehicle 1, for example, the battery may be used as an operating power source for the vehicle 1. The vehicle 1 may also include a controller 2000 and a motor 3000, and the controller 2000 is used to control the battery to power the motor 3000, for example, for starting, navigating and operating power requirements of the vehicle 1 during driving.

[0073] In some embodiments of the present application, the battery can be used not only as an operating power source for the vehicle 1 , but also 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 .

[0074] Reference Figure 2 and Figure 3 , Figure 2Schematic diagram of the battery device 1000 according to some embodiments of the present application. Figure 3 Exploded view of the battery device 1000 according to some embodiments of the present application. The battery includes a box body 100 and battery cells 200. The box body 100 forms a cavity, and the battery cells 200 are accommodated in the cavity of the box body 100. Among them, the box body 100 is used to provide an accommodation space for the battery cells 200, and the box body 100 can adopt various structures. In some embodiments, the box body 100 may include a first part (such as the frame 10 described below), a second part (such as the bottom plate 60 described below), a third part (such as the cover plate 50 described below), and a fourth part (such as the bottom guard plate 20 described below). The first part and the second part are connected to form a lower box body 100, and the lower box body 100 is connected to the third part to jointly define an accommodation cavity 101 for accommodating the battery cells 200. The lower box body 100 can be a hollow structure with one end open, and the cover plate 50 and the bottom guard plate 20 can be plate-like structures. The cover plate 50 covers the open side of the lower box body 100 to close the open side of the lower box body 100; the bottom guard plate 20 is connected to the lower side of the bottom plate 60 to increase the structural strength of the bottom plate 60; the lower box body 100 and the cover plate 50 can also be hollow structures with one side open, and the open side of the lower box body 100 covers the open side of the cover plate 50. Of course, the box body 100 formed by the lower box body 100 and the cover plate 50 can be various shapes, such as a cylinder, a cuboid, etc.

[0075] In the battery, there may be multiple battery cells 200, and the multiple battery cells 200 can be connected in series, parallel, or in a mixed connection. A mixed connection means that there are both series and parallel connections among the multiple battery cells 200. The multiple battery cells 200 can be directly connected in series, parallel, or in a mixed connection together, and then the whole formed by the multiple battery cells 200 is accommodated in the box body 100; of course, the battery can also be that multiple battery cells 200 are first connected in series, parallel, or in a mixed connection to form a battery module form, and then multiple battery modules are connected in series, parallel, or in a mixed connection to form a whole and are accommodated in the box body 100. The battery may also include other structures. For example, the battery may further include a busbar component for realizing the electrical connection among the multiple battery cells 200.

[0076] Among them, each battery cell 200 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but not limited thereto. The battery cell 200 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc.

[0077] Next, refer to Figures 2 - 10 Describe the battery device 1000 according to the embodiments of the first aspect of the present application. Figure 2 is a schematic diagram of the battery device 1000 according to the embodiments of the present application. Figure 3 is an exploded view of the battery device 1000 according to the embodiments of the present application.Figure 4 yes Figure 3 The schematic diagram of the box 100 shown in FIG. Figure 5 is along Figure 3 The cross-sectional view of line AA shown in FIG. Figure 6 is a partial cross-sectional view of a battery device 1000 according to another embodiment of the present application. Figures 7 - 10 Schematic diagram of the connection between the frame 10 and the shielding structure 30 according to an embodiment of the present application.

[0078] The embodiment of the present application provides a battery device 1000, referring to Figures 2 - 6 The battery device 1000 includes a box body 100, which includes: a frame 10, a bottom guard plate 20 and a shielding structure 30. The inner side of the frame 10 defines a accommodating cavity 101 for accommodating a battery cell 200; the bottom guard plate 20 is arranged on a side of the frame 10 away from the accommodating cavity 101 in a first direction, and the first direction is the height direction of the box body 100. The bottom guard plate 20 is fastened to the frame 10 by a fastener 40; the shielding structure 30 is fixedly connected to the frame 10, and a protective space 301 is formed between the shielding structure 30 and the bottom guard plate 20. The fastener 40 includes a protrusion 41, and the protrusion 41 is protruding outside the bottom guard plate 20 and is arranged in the protective space 301.

[0079] Specifically, the frame 10 defines a receiving cavity 101 for receiving the battery cell 200. A plurality of battery cells 200 are installed in the receiving cavity 101. The frame 10 provides protection for the plurality of battery cells 200, which can effectively reduce the damage to the battery cells 200 caused by external impacts, thereby improving the reliability of the battery.

[0080] The bottom guard plate 20 is mainly arranged on the lower side of the frame 10. The bottom guard plate 20 is connected to the frame 10 to carry and protect the battery cells 200, provide support and protection for the multiple battery cells 200 inside the battery, and effectively reduce the problem of damage to the battery cells 200 due to bottom impact. The frame 10 and the bottom guard plate 20 are both made of plates with a certain strength, and the materials can be various, including but not limited to: copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0081] It can be understood that “the bottom guard plate 20 is fastened to the frame 10 by the fastener 40” means that the bottom guard plate 20 is detachably connected to the frame 10, thereby increasing the convenience of installation and removal of the box 100, and further increasing the convenience of installation, removal and maintenance of the battery device 1000. In addition, the fastener 40 may optionally include multiple types, for example, it may be a fastener 40, a stud, a screw, etc.

[0082] "The fastener 40 includes a protrusion 41 which protrudes outside the bottom guard plate 20 and is disposed within the protection space 301". It can be understood that the portion of the fastener 40 extending out of the bottom guard plate 20 is located within the protection space 301. That is to say, the portion of the fastener 40 extending out of the bottom guard plate 20 can be completely covered by the shielding structure 30. In this way, when the battery device 1000 is impacted or scratched at the bottom, the fastener 40 can be effectively prevented from being directly stressed, thereby reducing the probability of damage or loosening of the fastener 40, and thus improving the airtight reliability of the box body 100. In addition, it should be noted that the protection space 301 can also play a role in crash energy absorption. When the battery device 1000 is impacted by an external force, the impact energy can collapse and absorb energy within this space, thereby reducing the force transmitted to the fastener 40, reducing the stress on the connection of the fastener 40, and thus reducing the probability of airtight failure at the connection of the fastener 40, and improving the airtight reliability of the battery device 1000. Further, the shielding structure 30 can include various types, such as the bottom guard plate 20, the protection box, etc.

[0083] In the above technical solution, by providing the shielding structure 30, when the bottom of the vehicle 1 is impacted or scratched, the fastener 40 can be effectively prevented from being directly stressed, thereby reducing the probability of damage or loosening of the fastener 40, and thus improving the airtight reliability of the battery device 1000.

[0084] In some embodiments, the shielding structure 30 is integrally formed with the frame 10.

[0085] It can be understood that the shielding structure 30 and the frame 10 are made by one mold, and there is no welded connection point between the shielding structure 30 and the frame 10. In this way, when assembling the box body 100, the use of parts can be reduced or the process steps can be simplified, thereby improving the assembly rate of the box body 100 and reducing the production cost of the entire box body 100. At the same time, since there is no welding point between the shielding structure 30 and the frame 10, the structural strength of the shielding structure 30 can be improved, and thus the protection effect of the shielding structure 30 can be improved, further reducing the probability of the fastener 40 being scratched, reducing the probability of the fastener 40 failing, and improving the airtightness of the box body 100.

[0086] In the above technical solution, by providing the shielding structure 30 to be integrally formed with the frame 10, the use of parts can be reduced or the process steps can be simplified, thereby improving the assembly rate of the box body 100 and reducing the production cost of the entire box body 100. At the same time, the structural strength of the shielding structure 30 can be improved, and thus the protection effect of the shielding structure 30 can be improved, further reducing the probability of the fastener 40 being scratched, reducing the probability of the fastener 40 failing, and improving the airtightness of the box body 100.

[0087] In some embodiments, such as Figure 5 and Figure 6 shown, the shielding structure 30 and the frame 10 cooperate to define an opening communicating with the protection space 301. The opening is arranged on the inner side of the accommodation cavity 101 in the second direction, where the second direction intersects the first direction.

[0088] Herein, "the first direction intersects the second direction" is intended to indicate that the first direction and the second direction can be perpendicularly arranged or only intersect non-perpendicularly. For example, the first direction and the second direction can be arranged at an angle of 30°, 60°, or 80°.

[0089] Specifically, the first direction is the height direction of the frame 10. Referring to Figure 6 , the first direction is the up-and-down direction, and the bottom guard plate 20 is arranged on the lower side of the frame 10. Thus, "the opening is arranged on the inner side of the accommodation cavity 101 in the second direction" can be understood as that the opening can be horizontally arranged in the left-right direction or the front-back direction towards the inner side of the accommodation cavity 101, or arranged inwards and upwards towards the accommodation cavity 101.

[0090] It can be understood that after the shielding structure 30 is connected to the frame 10, an accommodation space can be formed that opens towards one side of the accommodation cavity 101 in the second direction. Among them, the protection space 301 is located within the accommodation space. Thus, this accommodation space can accommodate the part of the fastener 40 that extends beyond the bottom guard plate 20, that is, the part of the fastener 40 that extends beyond the bottom guard plate 20 can be wrapped in multiple directions, thereby further enhancing the protection effect on the fastener 40. At the same time, since the fastener 40 is used to connect the bottom guard plate 20 and the frame 10, the connection part between the bottom guard plate 20 and the frame 10 is also arranged within this accommodation space. It should be noted that since the bottom guard plate 20 and the frame 10 are connected by the fastener 40, a gap will be formed at the connection position between the bottom guard plate 20 and the frame 10. Thus, after the shielding structure 30 is connected to the frame 10, it can shield the gap at the connection position between the bottom guard plate 20 and the frame 10 from the side of the box body 100, thereby preventing water flow from entering the bottom guard plate 20 through the gap from the side, and further effectively reducing the probability of the foam in the bottom guard plate 20 being impacted by water, thereby reducing the probability of foam seal failure.

[0091] In the above technical solution, a shielding structure 30 is provided to cooperate with the frame 10 to define an opening connected to the protective space 301, and the opening is arranged horizontally toward the second direction toward the inner side of the accommodating cavity 101, so that the portion of the fastener 40 that exceeds the bottom guard plate 20 can be wrapped in multiple directions, thereby further enhancing the protection of the fastener 40; at the same time, the gap at the connection position between the bottom guard plate 20 and the frame 10 can also be shielded from the side of the box body 100, thereby preventing side water flow from entering the bottom guard plate 20 through the gap, thereby effectively reducing the probability of the foam in the bottom guard plate 20 being impacted by water, thereby reducing the probability of foam sealing failure.

[0092] In some embodiments, Figure 5 and Figure 6 As shown, one end of the shielding structure 30 is connected to the frame 10, and the other end of the shielding structure 30 extends along a first direction toward a side away from the frame 10, and extends along a second direction toward the inner side of the accommodating cavity 101, wherein the second direction intersects with the first direction.

[0093] Here, “the first direction intersects the second direction” is intended to indicate that the first direction and the second direction may be arranged vertically, or may be arranged to intersect non-vertically. For example, the first direction and the second direction may be arranged at an angle of 30°, 60° or 80°.

[0094] Specifically, refer to Figure 6 , the first direction is the up and down direction, the bottom guard plate 20 is arranged on the lower side of the frame 10, thus, "the other end of the shielding structure 30 extends along the first direction toward the side away from the frame 10, and extends along the second direction toward the inner side of the accommodating cavity 101". It can be understood that the other end of the shielding structure 30 can extend downward and horizontally toward the inner side of the accommodating cavity 101, or the other end of the shielding structure 30 can extend downward and inward and upward toward the accommodating cavity 101.

[0095] It is understandable that the shielding structure 30 can be an integral part, which can simplify the structure of the shielding structure 30, thereby reducing the difficulty of producing the shielding structure 30 and reducing the production cost of the shielding structure 30. It should be noted that the shielding structure 30 can extend downward and inward through a fold line or an arc.

[0096] In the above technical solution, by setting one end of the shielding structure 30 to be connected to the frame 10, the other end of the shielding structure 30 extends along the first direction toward the side away from the frame 10, and extends along the second direction toward the inner side of the accommodating cavity 101, the structure of the shielding structure 30 can be simplified, thereby reducing the production difficulty of the shielding structure 30 and reducing the production cost of the shielding structure 30.

[0097] In some embodiments, Figure 5 andFigure 6 As shown, the shielding structure 30 includes: a first shielding portion 31 and a second shielding portion 32. The first end of the first shielding portion 31 is connected to the frame 10, and the second end of the first shielding portion 31 extends in a first direction away from the frame 10. The first end of the second shielding portion 32 is connected to the second end of the first shielding portion 31, and the second end of the second shielding portion 32 extends in a second direction toward the inner side of the accommodation cavity 101. At least a part of the second shielding portion 32 is located on the side of the fastener 40 away from the accommodation cavity 101 in the first direction, wherein the second direction intersects the first direction.

[0098] Specifically, the first direction is the height direction of the frame 10. Thus, "the first end of the first shielding portion 31 is connected to the frame 10, and the second end of the first shielding portion 31 extends in the first direction away from the frame 10" can be understood as that the first end of the first shielding portion 31 is connected to the frame 10, and the second end of the first shielding portion 31 extends in the height direction of the frame 10 away from the frame 10. Refer to Figure 6 , it can be understood that the second end of the first shielding portion 31 extends downward in the up-down direction. That is to say, the first shielding portion 31 is formed as a flat plate extending up and down, and the connection position with the frame 10 is in the same plane.

[0099] Among them, "the first direction intersects the second direction" is intended to indicate that the first direction and the second direction can be vertically arranged, or can be only intersecting and non-vertical arranged. For example, the first direction and the second direction can be arranged at an angle of 30°, 60° or 80°. Thus, "the second end of the second shielding portion 32 extends in the second direction toward the inner side of the accommodation cavity 101" can be understood as that the second end of the second shielding portion 32 can extend in a direction parallel to the bottom guard plate 20 toward the accommodation cavity 101, or can extend toward the accommodation cavity 101.

[0100] Specifically, the first shielding portion 31 and the second shielding portion 32 are connected to form an L shape. The first shielding portion 31 is arranged on the outer side of the position close to the edge of the frame in the radial direction of the fastener 40, mainly used to shield the gap between the bottom guard plate 20 and the frame 10 and protect the fastener 40 from the side, preventing the impact on the fastener 40 when the battery device 1000 has a side collision; at least a part of the second shielding portion 32 is arranged on the side of the fastener 40 away from the accommodation cavity 101 in the first direction. Since the bottom guard plate 20 is generally arranged below the frame 10, thus, it can be understood that at least a part of the second shielding portion 32 is arranged on the lower side of the fastener 40, so that the second shielding portion 32 can protect the fastener 40 from below, effectively reducing the probability that the fastener 40 is directly collided or rubbed by the outside.

[0101] In addition, since at least a part of the second shielding portion 32 is disposed on the side of the fastener 40 facing away from the accommodation cavity 101 in the first direction, and the fastener 40 is mainly used to connect the bottom guard plate 20 and the frame 10, thus, it can also be understood that at least a part of the second shielding portion 32 is disposed on the lower side of the bottom guard plate 20. In this way, when the bottom guard plate 20 needs to be disassembled for the maintenance of the battery device 1000, the second shielding portion 32 can lift the bottom guard plate 20. Therefore, other lifting devices do not need to be used, which can improve the convenience of disassembly and maintenance. At the same time, when the maintenance is completed and the bottom guard plate 20 needs to be reinstalled, the bottom guard plate 20 can be first assembled on the upper side of the second shielding portion 32 and then fastened. In this way, the installation of the bottom guard plate 20 can be achieved without using other lifting devices. Therefore, the number of operators and operation steps required during the installation operation of the bottom guard plate 20 can be reduced, which can improve the convenience of installing the bottom guard plate 20 and reduce the maintenance cost of the battery device 1000.

[0102] Among them, "at least a part of the second shielding portion 32 is located on the side of the fastener 40 facing away from the accommodation cavity 101 in the first direction" can be understood as that the second shielding portion 32 can be partially located on the side of the fastener 40 facing away from the accommodation cavity 101 in the first direction, or can be entirely located on the side of the fastener 40 facing away from the accommodation cavity 101 in the first direction.

[0103] In the above technical solution, by providing the first shielding portion 31 and the second shielding portion 32, the gap between the connection positions of the bottom guard plate 20 and the frame 10 can be shielded, preventing the side water flow from entering the bottom guard plate 20 through the gap. Furthermore, the probability of the foam in the bottom guard plate 20 being impacted by water can be effectively reduced, thereby reducing the probability of foam seal failure. At the same time, the fastener 40 can be protected from below and from the side, and further, the probability of the fastener 40 being directly collided or scratched by the outside can be further reduced. In addition, when the bottom guard plate 20 is disassembled and installed, the shielding member can also support the bottom guard plate 20, which can improve the convenience of installing and disassembling the bottom guard plate 20, improve the maintenance rate of the battery device 1000, and reduce the maintenance cost of the battery device 1000.

[0104] In some embodiments, as Figures 5 - 6 shown, the second shielding portion 32 is a horizontally arranged flat plate.

[0105] Among them, the flat plate has a simple structure and is easy to manufacture, which can improve the production efficiency of the shielding structure 30 and reduce the production cost of the shielding structure 30. At the same time, the horizontally arranged flat plate structure can also improve the load-bearing stability of the second shielding portion 32, enabling the second shielding portion 32 to stably support the bottom guard plate 20, thereby improving the stability of the bottom guard plate 20 during the installation and disassembly process, and improving the operation reliability of the operator.

[0106] In the above technical solution, by setting the second shielding portion 32 as a horizontally arranged flat plate, the manufacturing difficulty of the shielding structure 30 can be reduced, and thus the production efficiency of the shielding structure 30 can be improved and the production cost of the shielding structure 30 can be reduced. At the same time, the load-bearing stability of the second shielding portion 32 can also be improved, thereby improving the stability of the bottom guard plate 20 during installation and disassembly, and thus improving the operation reliability of the operator.

[0107] In some embodiments, as Figure 6 shown, in the projection plane perpendicular to the first direction, the projection of the fastener 40 falls within the projection range of the second shielding portion 32.

[0108] It can be understood that the width of the second shielding portion 32 is greater than the diameter of the fastener 40. That is to say, in the upward direction, the second shielding portion 32 can cover the fastener 40. Thus, when the bottom of the battery device 1000 collides or rubs, the second shielding portion 32 can protect the fastener 40, and further effectively reduce the probability that the fastener 40 is directly collided or rubbed by the outside world, thereby reducing the probability of deformation of the fastener 40 and improving the airtight reliability of the box body 100.

[0109] In the above technical solution, by making the projection of the fastener 40 fall within the projection range of the second shielding portion 32 in the projection plane perpendicular to the first direction, the second shielding portion 32 can cover the fastener 40, and further can protect the fastener 40, effectively reducing the probability that the fastener 40 is directly collided or rubbed by the outside world, thereby reducing the probability of deformation of the fastener 40 and improving the airtight reliability of the box body 100.

[0110] In some embodiments, as Figure 6 shown, the second shielding portion 32 is formed with a through hole 321 that penetrates the second shielding portion 32 along the axial direction of the fastener 40, and the diameter of the through hole 321 is greater than the maximum outer diameter of the fastener 40.

[0111] Specifically, the through hole 321 is mainly used for installing and disassembling the fastener 40. The through holes 321 correspond to the fasteners 40 one by one, and the shape of the through hole 321 can be various, for example, it can be circular or the like.

[0112] "The diameter of the through hole 321 is greater than the maximum outer diameter of the fastener 40", it can be understood that the fastener 40 can move axially in the through hole 321. Thus, the diameter of the through hole 321 being greater than the maximum outer diameter of the fastener 40 is beneficial for the fastener 40 to pass through the through hole 321 of the second shielding portion 32 for installation and disassembly.

[0113] In the above technical solution, by providing the through hole 321, it is beneficial to the installation and disassembly of the fastener 40, thereby improving the convenience of assembling and disassembling the box body 100.

[0114] In some embodiments, as Figure 6 shown, the diameter dimension m of the through hole 321 is 21 mm - 25 mm.

[0115] For example, the diameter dimension m of the through hole 321 can be 21 mm, 22 mm, 23 mm, 24 mm, or 25 mm.

[0116] In the above technical solution, by setting the diameter dimension of the through hole 321 to be 21 mm - 25 mm, the diameter of the through hole 321 can be prevented from being too large to reduce the structural strength of the second shielding portion 32, and further the risk of deformation of the second shielding portion 32 due to collision can be reduced, thereby improving the protection effect of the second shielding portion 32 on the fastener 40; at the same time, the diameter of the through hole 321 can also be prevented from being too small, which is beneficial to the installation and disassembly of the fastener 40 using tools, thereby improving the assembly and disassembly rate of the box body 100.

[0117] In some embodiments, as Figures 4 - 5 and Figure 7 and Figure 9 shown, the through hole 321 penetrates through the edge of the second end of the second shielding portion 32.

[0118] It can be understood that an open mouth is formed in the radial direction of the through hole 321. In this way, when installing or disassembling the fastener 40, the installation tool can not only operate from below but also operate from the position of the open mouth. Therefore, the through hole 321 penetrating through the edge of the second end of the second shielding portion 32 can further improve the convenience of assembling and disassembling the box body 100; at the same time, when the second shielding portion 32 is displaced toward the fastener 40 side due to external impact or collision, it can also avoid the fastener 40, thereby further reducing the possibility of collision between the second shielding portion 32 and the fastener 40.

[0119] In the above technical solution, by setting the through hole 321 to penetrate through the edge of the second end of the second shielding portion 32, the convenience of assembling and disassembling the box body 100 can be further improved; at the same time, when the second shielding portion 32 is displaced toward the fastener 40 side due to external impact or collision, it can also avoid the fastener 40, thereby further reducing the possibility of collision between the second shielding portion 32 and the fastener 40.

[0120] In some embodiments, as Figure 6As shown, the frame 10 includes: a main beam 11 and a mounting beam 12, the inner side of the main beam 11 defines a receiving cavity 101; the mounting beam 12 is connected to a side of the main beam 11 away from the receiving cavity 101 in a second direction, and the second direction intersects with the first direction.

[0121] The main beam 11 is mainly used to strengthen the box 100 and reduce the risk of thermal runaway of the battery device 1000 due to a side collision; the mounting beam 12 is mainly used to install the battery device 1000 on the vehicle 1.

[0122] In the above technical solution, by providing the frame 10 including the main beam 11 and the mounting beam 12 , the box 100 can protect the battery cell 200 while meeting the requirement of installing the battery device 1000 on the vehicle 1 .

[0123] In some embodiments, Figure 6 As shown, the shielding structure 30 is connected to a side of the main beam 11 away from the accommodating cavity 101 in the first direction, and one end of the shielding structure 30 is connected to a side of the main beam 11 close to the mounting beam 12 .

[0124] Specifically, the bottom guard plate 20 abuts against the lower surface of the main beam 11 and is fixedly connected to the main beam 11 by the fastener 40. Thus, "the shielding structure 30 is connected to the side of the main beam 11 away from the accommodating cavity 101 in the first direction, and one end of the shielding structure 30 is connected to the side of the main beam 11 close to the mounting beam 12." It can be understood that one end of the shielding structure 30 is connected to the outer peripheral surface of the main beam 11, and part of the shielding structure 30 is arranged on the side of the bottom guard plate 20 close to the mounting beam 12. Thus, the shielding structure 30 can protect the fastener 40 from the side and bottom, thereby further reducing the probability of failure of the fastener 40; at the same time, the shielding structure 30 can also block the gap between the bottom guard plate 20 and the frame 10, thereby effectively reducing the probability of the foam in the bottom guard plate 20 being impacted by water and reducing the probability of failure of the foam seal.

[0125] In the above technical solution, a shielding structure 30 is provided to be connected to the side of the main beam 11 which is away from the accommodating cavity 101 in the first direction, and one end of the shielding structure 30 is connected to the side of the main beam 11 close to the mounting beam 12, so that the shielding structure 30 can protect the fastener 40 from the side and bottom, thereby further reducing the probability of failure of the fastener 40; at the same time, the shielding structure 30 can also shield the gap between the bottom guard plate 20 and the frame 10, thereby effectively reducing the probability of the foam in the bottom guard plate 20 being impacted by water, and reducing the probability of failure of the foam seal.

[0126] In some embodiments, Figure 4 and Figures 7 - 9As shown, the number of fasteners 40 is multiple, and the multiple fasteners 40 are arranged at intervals along the circumferential direction of the frame 10, and the shielding structure 30 extends along the circumferential direction of the frame 10.

[0127] For example, the number of fasteners 40 can be two, three or more. Arranging the multiple fasteners 40 at intervals along the circumferential direction of the frame 10 can improve the connection tightness of the frame 10, and further improve the airtight reliability of the battery device 1000.

[0128] In the above technical solution, by arranging the multiple fasteners 40 at intervals along the circumferential direction of the frame 10, the connection tightness of the frame 10 can be improved, and further the airtight reliability of the battery device 1000 can be improved.

[0129] In some embodiments, the shielding structure 30 extends along the circumferential direction of the frame 10 in a ring shape.

[0130] It can be understood that the shielding structure 30 can be an integral part. In this way, while the shielding structure 30 can protect the fasteners 40, it can also simplify the structure of the shielding structure 30 and the connection steps between the shielding structure 30 and the frame 10, thereby reducing the production cost of the entire box body 100 and improving the production rate of the box body 100.

[0131] In this embodiment, by arranging the shielding structure 30 to extend along the circumferential direction of the frame 10 in a ring shape, while meeting the requirement that the shielding structure 30 protects the fasteners 40, it can also simplify the structure of the shielding structure 30 and the connection steps between the shielding structure 30 and the frame 10, thereby reducing the production cost of the entire box body 100 and improving the production rate of the box body 100.

[0132] In a second aspect, an embodiment of the present application further provides a box body 100, and the box body 100 is the box body 100 in the battery device 1000 according to the first aspect of the present application.

[0133] Optionally, referring to Figure 3 , the box body 100 further includes a cover plate 50 and a bottom plate 60. The cover plate 50 is arranged at the upper end of the frame 10 for covering the upper side of the frame 10, and the bottom plate 60 is arranged at the lower end of the frame 10 for covering the lower side of the frame 10. The cover plate 50, the frame 10 and the bottom plate 60 are connected in sequence to form a closed installation space, and multiple battery cells 200 are installed in the installation space; the bottom protection plate 20 is arranged on the lower side of the bottom plate 60 for increasing the structural strength of the bottom.

[0134] Among them, when manufacturing the battery, the frame 10 and the bottom plate 60 can be fixedly connected first to form a receiving cavity 101, then the bottom protection plate 20 is fixed on the lower side of the bottom plate 60, then multiple battery cells 200 and other required components are installed in the receiving cavity 101, and then the receiving cavity 101 is covered with the cover plate 50 to seal the battery.

[0135] Optional, e.g. Figure 5 As shown, the main beam 11 also includes an extension portion 111, which extends toward one side of the accommodating cavity 101 and is arranged between the bottom plate 60 and the bottom guard plate 20. In this way, the structural strength of the bottom of the box body 100 can be increased, and the bearing performance of the box body 100 for the battery cell 200 can be increased.

[0136] In the above technical solution, by providing the box body 100 , the protection and assembly of multiple battery cells 200 can be achieved, and impurities can be prevented from entering the installation cavity to damage the battery cells 200 , thereby improving the reliability of the battery device 1000 .

[0137] In a third aspect, an embodiment of the present application further provides an electrical device, comprising a battery device 1000 according to the first aspect of the present application, and the battery device 1000 is used to provide electrical energy.

[0138] In the above technical solution, the overall performance of the electrical device is improved by providing the battery of the above second aspect embodiment.

[0139] The following will refer to Figures 2 - 10 A battery device 1000 according to a specific embodiment of the present application is described.

[0140] Reference Figure 2 The battery device 1000 includes: a box body 100 and a plurality of battery cells 200, wherein the box body 100 includes: a frame 10, a bottom guard plate 20 and a shielding structure 30, the inner side of the frame 10 defines a accommodating cavity 101 for accommodating the battery cells 200; the bottom guard plate 20 is arranged on the lower side of the frame 10, and the bottom guard plate 20 is fastened to the frame 10 by a fastener 40; the shielding structure 30 is fixedly connected to the frame 10, and a protective space 301 is formed between the shielding structure 30 and the bottom guard plate 20, and the portion of the fastener 40 located on the lower side of the bottom guard plate 20 is located in the protective space 301.

[0141] Specifically, the frame 10 includes: a main beam 11 and a mounting beam 12, the inner side of the main beam 11 defines a accommodating cavity 101; the mounting beam 12 is connected to the side of the main beam 11 facing away from the accommodating cavity 101, the shielding structure 30 is connected to the lower side of the main beam 11, and one end of the shielding structure 30 is connected to the side of the main beam 11 close to the mounting beam 12.

[0142] The shielding structure 30 and the frame 10 are formed in one piece, and the shielding structure 30 and the frame 10 cooperate to define an opening communicating with the protection space 301 , and the opening is arranged toward the bottom guard plate 20 in a horizontal direction.

[0143] Among them, the shielding structure 30 includes: a first shielding portion 31 and a second shielding portion 32. The first end of the first shielding portion 31 is connected to the frame 10, and the second end of the first shielding portion 31 extends downward; the first end of the second shielding portion 32 is connected to the second end of the first shielding portion 31, and the second end of the second shielding portion 32 extends toward the bottom guard plate 20 and extends beyond the side edge of the fastener 40 away from the first shielding portion 31.

[0144] Further, the second shielding portion 32 is formed with a through hole 321 that penetrates the second shielding portion 32 in the axial direction of the fastener 40. The diameter of the through hole 321 is greater than the maximum outer diameter of the fastener 40. Among them, the through hole 321 penetrates the edge of the second end of the second shielding portion 32.

[0145] In the above technical solution, by providing the shielding structure 30, when the bottom of the vehicle 1 is impacted or scratched, the fastener 40 can be effectively prevented from directly bearing force, and further, the probability of damage or loosening of the fastener 40 can be reduced, so that the airtight reliability of the battery device 1000 can be improved.

[0146] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; 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 covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: The invention comprises a box body, wherein the box body comprises: A frame (10), wherein an accommodating cavity (101) for accommodating a battery cell is defined on an inner side of the frame (10); a bottom guard plate (20), the bottom guard plate (20) being arranged on a side of the frame (10) away from the accommodating cavity (101) in a first direction, the first direction being a height direction of the box body, the bottom guard plate (20) being fastened to the frame (10) via a fastener (40); A shielding structure (30), the shielding structure (30) is fixedly connected to the frame (10), a protective space (301) is formed between the shielding structure (30) and the bottom guard plate (20), and the fastener (40) includes a protrusion (41), the protrusion (41) is protruding outside the bottom guard plate (20) and is arranged in the protective space (301).

2. The battery device according to claim 1, characterized in that: The shielding structure (30) and the frame (10) are integrally formed.

3. The battery device according to claim 1, characterized in that: The shielding structure (30) cooperates with the frame (10) to define an opening communicating with the protective space (301), and the opening is arranged toward the inner side of the accommodating cavity (101) in a second direction, wherein the second direction intersects with the first direction.

4. The battery device according to claim 1, characterized in that: One end of the shielding structure (30) is connected to the frame (10), and the other end of the shielding structure (30) extends along the first direction toward a side away from the frame (10), and extends along the second direction toward the inner side of the accommodating cavity (101), wherein the second direction intersects with the first direction.

5. The battery device according to claim 1, characterized in that: The shielding structure (30) comprises: a first shielding portion (31), wherein a first end of the first shielding portion (31) is connected to the frame (10), and a second end of the first shielding portion (31) extends along the first direction toward a side away from the frame (10); A second shielding portion (32), wherein the first end of the second shielding portion (32) is connected to the second end of the first shielding portion (31), the second end of the second shielding portion (32) extends along a second direction toward the inner side of the accommodating cavity (101), and at least a portion of the second shielding portion (32) is located on a side of the fastener (40) that is away from the accommodating cavity (101) in the first direction, wherein the second direction intersects with the first direction.

6. The battery device according to claim 5, characterized in that: The second shielding portion (32) is a horizontally arranged flat plate.

7. The battery device according to claim 5, characterized in that: In a projection plane perpendicular to the first direction, the projection of the fastener (40) falls within the projection range of the second shielding portion (32).

8. The battery device according to claim 5, characterized in that: The second shielding portion (32) is formed with a through hole (321) penetrating the second shielding portion (32) along the axial direction of the fastener (40), and the diameter of the through hole (321) is greater than the maximum outer diameter of the fastener (40).

9. The battery device according to claim 8, characterized in that: The diameter of the through hole (321) is 21 mm-25 mm.

10. The battery device according to claim 8, characterized in that: The through hole (321) passes through the edge of the second end of the second shielding portion (32).

11. The battery device according to claim 1, characterized in that: The framework (10) comprises: A main beam (11), wherein the accommodating cavity (101) is defined inside the main beam (11); A mounting beam (12), the mounting beam (12) being connected to a side of the main beam (11) facing away from the accommodating cavity (101) in a second direction, the second direction intersecting the first direction.

12. The battery device according to claim 11, characterized in that: The shielding structure (30) is connected to a side of the main beam (11) facing away from the accommodating cavity (101) in the first direction, and one end of the shielding structure (30) is connected to a side of the main beam (11) close to the mounting beam (12).

13. The battery device according to claim 1, characterized in that: The number of the fasteners (40) is plural, and the plurality of fasteners (40) are arranged at intervals along the circumference of the frame (10), and the shielding structure (30) extends along the circumference of the frame (10).

14. The battery device according to claim 13, characterized in that: The shielding structure (30) extends in a ring shape along the circumference of the frame (10).

15. A box, characterized in that: The housing is a housing in a battery device according to any one of claims 1 to 14.

16. An electrical device, characterized in that: The invention comprises a battery device according to any one of claims 1 to 14, wherein the battery device is used to provide electrical energy.

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