Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device. The battery device comprises a battery monomer, a box body and a protection plate, the box body comprises an accommodating space and a wall plate, the battery monomer is accommodated in the accommodating space, and the wall plate is arranged on one side of the accommodating space. The protection plate is in sliding fit with the box body and is detachably connected to the box body, and at least part of the protection plate is arranged on the side, opposite to the containing space, of the wall plate. According to the battery device, the assembling convenience and applicability of the battery device can be effectively improved.

Description

Technical Field

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

[0002] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

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

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

[0005] In a first aspect, an embodiment of the present application provides a battery device, the battery device includes a battery cell, a box body and a protective plate, the box body includes a housing space and a wall plate, the battery cell is accommodated in the housing space, and the wall plate is arranged on one side of the housing space. The protective plate is slidably matched with the box body and is detachably connected to the box body, and at least a portion of the protective plate is arranged on a side of the wall plate that is away from the housing space.

[0006] When assembling the protective plate, the above technical solution slides the protective plate and the box body together, and detachably connects the protective plate and the box body when at least part of the protective plate is located on the side of the wall panel facing away from the accommodating space. This design not only structurally simplifies the loading and unloading process of the protective plate, but also enables the operator to quickly install and disassemble the protective plate without using complicated tools or performing tedious fixing steps, thereby improving the convenience of assembly of the battery device.

[0007] In addition, the sliding fit structure between the protection plate and the box can also flexibly adapt to changes in the thickness, material and size of the protection plate. When the operating conditions are adjusted or the protection standards are improved, the user can only remove, replace or improve the protection plate itself without making major changes to the battery device. This flexibility improves the adaptability of the battery device to different usage scenarios and technological evolution, and can effectively improve the applicability of the battery device.

[0008] In addition, it also helps to achieve modular production of boxes and protection boards. It can flexibly adjust whether the battery device is equipped with a protection board when leaving the factory according to customer needs, reducing repeated investment in the original hardware framework, and can balance performance and cost to maximize economic benefits throughout the life cycle, thereby enhancing product competitiveness.

[0009] In some embodiments of the first aspect, the battery device further includes a frame, which is arranged around the accommodating space and connected to the wall panel, and the frame is provided with a slide groove, and the protection plate is slidably matched with the slide groove and is detachably connected to the frame.

[0010] On the one hand, the above technical solution has a simple structure of the slide groove, which is easy to manufacture and helps to reduce costs; on the other hand, compared with setting the slide groove on the wall panel or the protective plate, setting the slide groove on the frame can reduce the impact of the slide groove on the structural strength of the wall panel or the protective plate, and can improve the reliability of the battery device.

[0011] In some embodiments of the first aspect, the frame includes a first beam and a second beam, the first beam and the second beam are arranged opposite to each other along a first direction. The slide groove includes a first groove and a second groove, the first groove is arranged on the first beam, the second groove is arranged on the second beam, the first groove and the second groove are both extended along the second direction, and the first direction, the second direction and the thickness direction of the wall plate are perpendicular to each other.

[0012] The above technical solution can effectively improve the reliability of the sliding fit between the protection plate and the frame, and reduce the risk of the protection plate falling off during the assembly process.

[0013] In some embodiments of the first aspect, the slide groove is arranged on a side of the frame close to the wall panel along the thickness direction of the wall panel.

[0014] The above technical solution sets the slide groove on the side of the frame close to the wall panel along the thickness direction of the wall panel, so that the protective plate can slide with the slide groove without some complex structural design to adapt to the shape of the frame, which can reduce the structural complexity of the protective plate and reduce the difficulty and cost of preparing the protective plate.

[0015] In some embodiments of the first aspect, the frame includes a frame body and a supporting member, the supporting member is connected to the frame body, at least a portion of the supporting member is arranged on a side of the frame body close to the wall panel along the thickness direction, and forms a slide groove together with the frame body.

[0016] The above technical solution makes the size, shape and processing technology of the slide more flexible through the split design of the frame body and the supporting member, reducing the difficulty of preparing the slide. In addition, the layout and shape of the slide can be flexibly adjusted according to specific needs, improving the design flexibility of the slide.

[0017] In some embodiments of the first aspect, the protection plate includes a main body and a connecting portion, the connecting portion is connected to a corner of the main body, at least a portion of the connecting portion is located in the slide groove and is detachably connected to the supporting member. The connecting portion includes a first step, the first step includes a first transition section and a first connecting section, the first transition section is bent relative to the main body along the thickness direction and away from the wall plate, and the first transition section is connected between the main body and the first connecting section.

[0018] The connection part design of the above technical solution, on the one hand, during the sliding assembly of the protection plate and the slide groove, the first connecting section can abut against the supporting member, and the entire protection plate slides and rubs with the supporting member through the first connecting section. Compared with the entire edge portion of the protection plate and the supporting member, the contact area between the first connecting section and the supporting member is smaller, thereby reducing the resistance during the sliding assembly of the protection plate and reducing the difficulty of assembling the protection plate. On the other hand, the first transition section can provide the protection plate with a certain flexibility and assembly adaptability to reduce the stress concentration that may be caused by the protection plate during the assembly process or subsequent use, thereby improving the reliability of the protection plate.

[0019] In some embodiments of the first aspect, the connecting portion also includes a second step, the second step includes a second transition section and a second connecting section, the second transition section is bent relative to the first connecting section along the thickness direction and away from the wall panel, the second transition section is connected between the first connecting section and the second connecting section, and at least a portion of the second connecting section is located in the slide groove and is detachably connected to the supporting member.

[0020] The above technical solution can further enhance the flexibility and assembly adaptability of the connecting portion by introducing the second step, so as to further reduce the stress concentration that may be caused by the protection plate during the assembly process or subsequent use, and further improve the reliability of the protection plate.

[0021] In some embodiments of the first aspect, the battery device further includes a buffer component connected between the frame body and the connecting portion, and an elastic modulus of the buffer component is greater than an elastic modulus of the protection plate.

[0022] The high elastic modulus of the buffer component enables it to effectively disperse the load when subjected to external impact or vibration, so as to absorb a certain impact force when the battery device is subjected to external impact, reduce the direct effect of external force on the connection part, and thus reduce the risk of connection failure between the protection plate and the box body. The protection plate has a lower elastic modulus and can more effectively protect the box body.

[0023] In some embodiments of the first aspect, the battery device also includes a fastener, the frame body is provided with a first through hole, the supporting member is provided with a second through hole, and the connecting portion is provided with a third through hole, the first through hole, the second through hole and the third through hole correspond to each other along the thickness direction, and the fastener passes through the first through hole, the second through hole and the third through hole and is fixed to the frame.

[0024] The above technical solution introduces fasteners, which can not only provide a strong clamping force to improve the connection firmness of the protection plate, but also enable the protection plate and the frame to form an integral structure, thereby improving the impact resistance of the protection plate.

[0025] In some embodiments of the first aspect, the battery device further comprises a heat exchange component connected to the side of the wall plate facing the battery cell. A first recess is provided on the side of the wall plate facing the heat exchange component, and at least a portion of the heat exchange component is accommodated in the first recess.

[0026] The above technical solution is particularly aimed at the positions of the battery device where there is a high frequency demand for adding or replacing protection plates, and introduces a design of sliding fit between the protection plate and the box body, so that the return on investment is relatively high, which helps to maximize the economic benefits.

[0027] In some embodiments of the first aspect, the wall plate is further provided with a first convex portion corresponding to the first concave portion, the first convex portion protruding from a surface of the wall plate on a side facing away from the heat exchange component. A second concave portion corresponding to the first convex portion is provided on a side of the protective plate facing the wall plate, and at least a portion of the first convex portion is accommodated in the second concave portion.

[0028] The cooperation between the first concave portion and the first convex portion can not only simplify the preparation process of the first concave portion, but also further improve the structural strength of the wall plate. In addition, by introducing the second concave portion, the space occupancy rate of the wall plate can be reduced, and the compactness of the structure inside the battery device can be improved.

[0029] In some embodiments of the first aspect, at least a portion of the protection panel is attached to the wall panel.

[0030] The above technical solution can reduce the size of the battery device along the thickness direction of the wall plate, which helps to improve the structural compactness and energy density of the battery device.

[0031] In some embodiments of the first aspect, the battery cells are carried by the wall plate.

[0032] The above technical solution is particularly aimed at the positions of the battery device where there is a high frequency demand for adding or replacing protection plates, and introduces a design of sliding fit between the protection plate and the box body, so that the return on investment is relatively high, which helps to maximize the economic benefits.

[0033] In a second aspect, the present application provides an electrical device, comprising a battery device provided by any embodiment of the first aspect, and the battery device is used to store or provide electrical energy.

[0034] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0036] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0037] Figure 2 A schematic diagram of an exploded structure of a battery device provided in some embodiments of the present application;

[0038] Figure 3 A schematic diagram of a top view of a box of a battery device provided in some embodiments of the present application;

[0039] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along AA;

[0040] Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at H;

[0041] Figure 6 for Figure 2 Schematic diagram of the local enlarged structure at K.

[0042] The reference numerals in the specific implementation manner are as follows:

[0043] 1. Vehicle; 2. Battery device; 3. Controller; 4. Motor;

[0044] 10. Battery cells;

[0045] 20. Box body; 21. Accommodating space; 22. Wall plate; 23. Frame; 231. First beam; 232. Second beam; 233. Frame body; 234. Supporting member; 24. Slide groove;

[0046] 30. protection plate; 31. main body; 32. connecting portion; 321. first step; 3211. first transition section; 3212. first connecting section; 322. second step; 3221. second transition section; 3222. second connecting section;

[0047] 40. Buffer component; 50. Fastener; 60. Heat exchange component;

[0048] X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0051] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0052] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0054] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0055] The term “plurality” used in this application refers to two or more (including two).

[0056] The term "parallel" in this application includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; meanwhile, "vertical" includes not only the absolutely vertical situation, but also the roughly vertical situation conventionally recognized in engineering.

[0057] In the present application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this.

[0058] The battery device mentioned in the embodiments of the present application may include one or more battery cells to provide a single physical module with higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel or in mixed connection through a busbar component.

[0059] In some embodiments, the battery device may be a battery module; when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0060] In some embodiments, the battery device may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0061] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0062] In some embodiments, the battery device may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0063] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0064] In the development of battery technology, the ease of assembly and applicability of battery devices will directly affect the economic benefits and user experience of the end products.

[0065] In the related art, bolts or hot-melt fastening processes are usually used to fasten the bottom guard plate to the box body. However, since the bottom guard plate is relatively large, there are many bolt points around it that need to be fastened, which undoubtedly makes the assembly convenience of the battery device less convenient.

[0066] In an environment where the structural strength of the box itself can meet the use requirements, the existence of the bottom guard plate is slightly redundant and will increase the overall weight of the battery device, affecting the energy density of the battery device. The bottom guard plate in the related art is difficult to remove after installation, making it difficult for users to flexibly choose whether to install the bottom guard plate according to the specific use environment, resulting in poor applicability of the battery device.

[0067] Based on the above considerations, an embodiment of the present application provides a battery device, which includes a battery cell, a box body and a protective plate, wherein the box body includes a receiving space and a wall plate, wherein the battery cell is received in the receiving space, and the wall plate is disposed on one side of the receiving space. The protective plate is slidably matched with the box body and is detachably connected to the box body, and at least a portion of the protective plate is disposed on a side of the wall plate that is away from the receiving space.

[0068] When assembling the protective plate, the above technical solution slides the protective plate and the box body together, and detachably connects the protective plate and the box body when at least part of the protective plate is located on the side of the wall panel facing away from the accommodating space. This design not only structurally simplifies the loading and unloading process of the protective plate, but also enables the operator to quickly install and disassemble the protective plate without using complicated tools or performing tedious fixing steps, thereby improving the convenience of assembly of the battery device.

[0069] In addition, the sliding fit structure between the protection plate and the box can also flexibly adapt to changes in the thickness, material and size of the protection plate. When the operating conditions are adjusted or the protection standards are improved, the user can only remove, replace or improve the protection plate itself without making major changes to the battery device. This flexibility improves the adaptability of the battery device to different usage scenarios and technological evolution, and can effectively improve the applicability of the battery device.

[0070] In addition, it also helps to achieve modular production of boxes and protection boards. It can flexibly adjust whether the battery device is equipped with a protection board when leaving the factory according to customer needs, reducing repeated investment in the original hardware framework, and can balance performance and cost to maximize economic benefits throughout the life cycle, thereby enhancing product competitiveness.

[0071] The technical solutions described in the embodiments of the present application are applicable to battery devices and electrical devices using the battery devices.

[0072] Electrical devices may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, electric tools, etc. Vehicles may be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc. Spacecraft include aircraft, rockets, space shuttles and spacecrafts, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc.

[0073] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery devices and electrical devices described above, but can also be applied to all battery devices including battery boxes and electrical devices using battery devices. However, for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0074] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0075] Continue to refer Figure 1 The vehicle 1 is provided with a battery device 2 inside, and the battery device 2 can be provided at the bottom, head, or tail of the vehicle 1. The battery device 2 can be used for powering the vehicle 1, for example, the battery device 2 can be used as an operating power source for the vehicle 1.

[0076] The vehicle 1 may further include a controller 3 and a motor 4 , wherein the controller 3 is used to control the battery device 2 to supply power to the motor 4 , for example, to meet the power requirements of starting, navigating and driving the vehicle 1 .

[0077] In some embodiments of the present application, the battery device 2 can not only serve as an operating power source for the vehicle 1, but also serve as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0078] Figure 2 A schematic diagram of an exploded structure of a battery device provided in some embodiments of the present application, Figure 3 This is a schematic diagram of a top view of a box of a battery device provided in some embodiments of the present application. Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along AA, Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at H, Figure 6 for Figure 2 Schematic diagram of the local enlarged structure at K.

[0079] Continue to refer Figures 2 to 6 The embodiment of the present application provides a battery device 2, which includes a battery cell 10, a box body 20 and a protection plate 30. The box body 20 includes a receiving space 21 and a wall plate 22. The battery cell 10 is received in the receiving space 21, and the wall plate 22 is disposed on one side of the receiving space 21. The protection plate 30 is slidably matched with the box body 20 and is detachably connected to the box body 20. At least a portion of the protection plate 30 is disposed on a side of the wall plate 22 that faces away from the receiving space 21.

[0080] As an example, the box 20 can be a variety of structures, such as a cylinder, a cuboid, etc. The battery cell 10 can be one or more. If there are multiple battery cells 10, the multiple battery cells 10 can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple battery cells 10 are both connected in series and in parallel. Multiple battery cells 10 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 10 is accommodated in the box 20; of course, multiple battery cells 10 can also be connected in series, in parallel, or in mixed connection to form a battery module, and then multiple battery modules are connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box 20.

[0081] In some examples, there are multiple battery cells 10 , and the multiple battery cells 10 are first connected in series, in parallel, or in hybrid connection to form a battery module. The multiple battery modules are then connected in series, in parallel, or in hybrid connection to form a whole, and are accommodated in the box 20 .

[0082] The multiple battery cells 10 in the battery module can be electrically connected through a busbar component to achieve parallel connection, series connection or mixed connection of the multiple battery cells 10 in the battery module.

[0083] As an example, the wall panel 22 may be a top panel of the box body 20 or a bottom panel of the box body 20 .

[0084] The wall panel 22 can be but is not limited to being made of metal or non-metallic materials. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metallic material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0085] For example, the sliding fit between the protection plate 30 and the box body 20 can be achieved through a slider and rail structure. For example, guide rails are provided on opposite sides of the box body 20 along the first direction X (the guide rails can be provided on the wall plate 22), the guide rails extend along the second direction Y, the first direction X, the second direction Y and the thickness direction Z are perpendicular to each other, and a slider matching the guide rail is provided on the protection plate 30, and the slider and the guide rail are slidably matched. Of course, the guide rail can also be provided on the protection plate 30, and the slider can be provided on the box body 20 (the slider can be provided on the wall plate 22).

[0086] The sliding fit between the protection plate 30 and the box body 20 may also be achieved through the slide groove 24 structure. For example, slide grooves 24 are provided on two opposite sides of the box body 20 along the first direction X (the slide grooves 24 may be provided on the wall plate 22), the slide grooves 24 extend along the second direction Y, and the protection plate 30 slides with the slide grooves 24 on both sides along the first direction X. Of course, the slide grooves 24 may also be provided on the protection plate 30, and a part of the box body 20 slides with the slide grooves 24.

[0087] As long as the structure can achieve sliding fit between the protection plate 30 and the box body 20, it is within the protection scope of this application and will not be described in detail here.

[0088] Exemplarily, the protective plate 30 can be detachably connected to the box body 20 by means of bolt connection, or the protective plate 30 can be detachably connected to the box body 20 by means of snap connection. As long as the structure can achieve detachable connection between the protective plate 30 and the box body 20, it is within the protection scope of the present application and will not be described in detail here.

[0089] The protection plate 30 can protect the wall plate 22, reduce the risk of the wall plate 22 being damaged by the external environment, and improve the reliability of the battery device 2. The protection plate 30 can be partially disposed on the side of the wall plate 22 facing away from the accommodating space 21, or can be entirely disposed on the side of the wall plate 22 facing away from the accommodating space 21.

[0090] In some examples, the protection plate 30 and the wall plate 22 may be made of the same material, which can simplify the manufacturing process and reduce costs.

[0091] In some examples, the structural strength of the protection panel 30 is greater than the structural strength of the wall panel 22 to improve the protection effect.

[0092] When assembling the protection plate 30, the above technical solution slides the protection plate 30 and the box body 20 together, and the protection plate 30 and the box body 20 are detachably connected in a state where at least part of the protection plate 30 is located on the side of the wall panel 22 facing away from the accommodating space 21. This design not only structurally simplifies the loading and unloading process of the protection plate 30, but also enables the operator to quickly install and disassemble the protection plate 30 without using complicated tools or performing tedious fixing steps, thereby improving the assembly convenience of the battery device 2.

[0093] Furthermore, the sliding fit structure between the protection plate 30 and the housing 20 can also flexibly adapt to changes in the thickness, material and size of the protection plate 30. When the operating conditions are adjusted or the protection standard is improved, the user can only disassemble, replace or improve the protection plate 30 itself without making major changes to the battery device 2. This flexibility improves the adaptability of the battery device 2 to different usage scenarios and technological evolution, and can effectively improve the applicability of the battery device 2.

[0094] In addition, it also helps to achieve modular production of the box 20 and the protection board 30, and can flexibly adjust whether the battery device 2 is equipped with the protection board 30 when leaving the factory according to customer needs, reducing repeated investment in the original hardware framework, and can balance performance and cost to maximize economic benefits throughout the life cycle, thereby enhancing product competitiveness.

[0095] In some embodiments, the battery device 2 further includes a frame 23 , which is disposed around the accommodating space 21 and connected to the wall panel 22 . The frame 23 is provided with a slide groove 24 , and the protection plate 30 is slidably matched with the slide groove 24 and is detachably connected to the frame 23 .

[0096] Exemplarily, the frame 23 may be a rectangular frame 23, a cylindrical frame 23, or other irregular frames 23, etc. Accordingly, the shape of the accommodating space 21 matches the shape of the frame 23. If the frame 23 is a rectangular frame 23, then the accommodating space 21 is a rectangular parallelepiped. If the frame 23 is a cylindrical frame 23, then the accommodating space 21 is a cylinder.

[0097] Optionally, the frame 23 can be but is not limited to being made of metal or non-metallic materials. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metallic material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0098] The frame 23 can be detachably connected to the wall panel 22, or can be integrally provided on the wall panel 22. The frame 23 can be directly connected to the wall panel 22, or can be restricted to the wall panel 22 by other components. As an example, the connection method between the frame 23 and the wall panel 22 can be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0099] For example, the slide groove 24 can be processed on the frame 23 by milling or laser cutting, or the frame 23 and the slide groove 24 can be integrally formed by casting, or the frame 23 and the sheet metal part can be independently manufactured first, and then the sheet metal part is connected to the frame 23 to form the slide groove 24.

[0100] The protection plate 30 can slide with the slide groove 24 directly through its edge, or a slider can be provided on the protection plate 30, and the protection plate 30 slides with the slide groove 24 through the slider. The length direction of the slide groove 24 is perpendicular to the thickness direction Z of the wall plate 22.

[0101] On the one hand, the above technical solution has a simple structure of the slide groove 24, which is easy to manufacture and helps to reduce costs; on the other hand, compared with setting the slide groove 24 on the wall panel 22 or the protective plate 30, setting the slide groove 24 on the frame 23 can reduce the impact of the slide groove 24 on the structural strength of the wall panel 22 or the protective plate 30, which can improve the reliability of the battery device 2.

[0102] In some embodiments, the frame 23 includes a first beam 231 and a second beam 232, and the first beam 231 and the second beam 232 are arranged opposite to each other along the first direction X. The slide groove 24 includes a first groove and a second groove, the first groove is arranged on the first beam 231, and the second groove is arranged on the second beam 232, and the first groove and the second groove are both extended along the second direction Y, and the first direction X, the second direction Y and the thickness direction Z of the wall plate 22 are perpendicular to each other.

[0103] Exemplarily, the two side edges of the protection plate 30 along the first direction X are slidably matched with the first groove and the second groove respectively, and sliders can also be set on both sides of the protection plate 30 along the first direction X, and the protection plate 30 is slidably matched with the first groove and the second groove through the sliders.

[0104] The above technical solution can effectively improve the reliability of the sliding fit between the protection plate 30 and the frame 23 and reduce the risk of the protection plate 30 falling off during the assembly process.

[0105] In some embodiments, the slide groove 24 is disposed on a side of the frame 23 close to the wall panel 22 along the thickness direction Z of the wall panel 22 .

[0106] Exemplarily, the opening of the slide groove 24 may be facing away from the accommodating space 21 along the thickness direction Z, or may be facing the accommodating space 21 along the first direction X.

[0107] For example, when the slide groove 24 is arranged on the side of the frame 23 facing away from the accommodating space 21 , the side of the protection plate 30 close to the slide groove 24 needs to be bent to bypass part of the periphery of the frame 23 in order to slide with the slide groove 24 .

[0108] In this way, the above technical solution sets the slide groove 24 on the side of the frame 23 close to the wall panel 22 along the thickness direction Z of the wall panel 22, so that the protection plate 30 can slide with the slide groove 24 without some complicated structural design to adapt to the shape of the frame 23, which can reduce the structural complexity of the protection plate 30 and reduce the difficulty and cost of preparing the protection plate 30.

[0109] In some examples, the opening of the slide groove 24 is along the first direction X toward the accommodating space 21 , which can further reduce the difficulty of preparing the protection plate 30 .

[0110] In some embodiments, the frame 23 includes a frame body 233 and a supporting member 234, the supporting member 234 is connected to the frame body 233, at least a portion of the supporting member 234 is disposed on a side of the frame body 233 close to the wall panel 22 along the thickness direction Z, and together with the frame body 233 forms a slide groove 24.

[0111] Exemplarily, the frame body 233 serves as the main supporting part of the frame 23, and the supporting member 234 may be in the shape of a strip structure or a plate structure, and its main function is to support the protection plate 30 and provide guidance. The supporting member 234 supports the protection plate 30, which means that the supporting member 234 is used to provide a supporting force for the protection plate 30, wherein the supporting force provided by the supporting member 234 for the protection plate 30 is opposite to the gravity on which the protection plate 30 is subjected.

[0112] The supporting member 234 may be detachably connected to the frame body 233, or may be integrally provided on the frame body 233. The supporting member 234 may be directly connected to the frame body 233, or may be restricted to the frame body 233 by other components. As an example, the connection method between the supporting member 234 and the frame body 233 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0113] In some examples, the frame body 233 and the supporting member 234 may be made of the same material, which can simplify the manufacturing process and reduce costs.

[0114] In some examples, the frame body 233 and the supporting member 234 can be made of different materials and processes to meet various needs.

[0115] In some examples, the supporting member 234 is configured to be movable relative to the frame body 233 , and the width or shape of the slide groove 24 can be changed by adjusting the position of the supporting member 234 to accommodate protection plates 30 of different sizes.

[0116] The above technical solution makes the size, shape and processing technology of the slide 24 more flexible through the split design of the frame body 233 and the supporting member 234, reducing the difficulty of preparing the slide 24. In addition, the layout and shape of the slide 24 can be flexibly adjusted according to specific needs, improving the design flexibility of the slide 24.

[0117] In some embodiments, the frame body 233 and the supporting member 234 are integrally formed. On the one hand, there is no need to connect the frame body 233 and the supporting member 234 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the frame body 233 and the supporting member 234 through an additional connection process, the frame body 233 and the supporting member 234 in an integral structure have higher structural strength.

[0118] In some embodiments, the protection plate 30 includes a main body 31 and a connecting portion 32, the connecting portion 32 is connected to the corner of the main body 31, at least part of the connecting portion 32 is located in the slide groove 24 and is detachably connected to the supporting member 234. The connecting portion 32 includes a first step 321, the first step 321 includes a first transition section 3211 and a first connecting section 3212, the first transition section 3211 is bent relative to the main body 31 along the thickness direction Z and away from the wall plate 22, and the first transition section 3211 is connected between the main body 31 and the first connecting section 3212.

[0119] Exemplarily, the main body 31 is the main protective part of the protection plate 30, and its main function is to reduce the risk of damage to the wall plate 22 by the external environment. The connecting part 32 is the connecting part of the protection plate 30, and its main function is to be connected to the supporting member 234.

[0120] The connecting portion 32 may be partially located in the slide groove 24 , or may be completely located in the slide groove 24 .

[0121] The connecting portion 32 may be detachably connected to the main body 31, or may be integrally provided on the main body 31. The connecting portion 32 may be directly connected to the main body 31, or may be restricted to the main body 31 by other components. As an example, the connection method between the connecting portion 32 and the main body 31 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0122] In some examples, the main body 31 and the connecting portion 32 are integrally formed. On the one hand, there is no need to connect the main body 31 and the connecting portion 32 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the main body 31 and the connecting portion 32 through an additional connection process, the main body 31 and the connecting portion 32 in an integral structure have higher structural strength.

[0123] The first transition section 3211 extends from the main body 31 and bends along the thickness direction Z and away from the wall plate 22, forming a certain angle with the main body 31. The first transition section 3211 can provide a certain flexibility and assembly adaptability for the connecting portion 32 to reduce the stress concentration that may be caused by the direct connection between the protection plate 30 and the supporting member 234. The first connecting section 3212 can serve as the main part connecting the connecting portion 32 and the supporting member 234.

[0124] For example, the first step 321 may be formed on the main body 31 by a stamping process.

[0125] In some examples, the plane where the first connecting section 3212 is located is parallel to the plane where the main body 31 is located.

[0126] In some examples, the first connecting section 3212 is closely connected to the supporting member 234 to increase the connection contact area between the first connecting section 3212 and the supporting member 234 and improve the connection stability.

[0127] The design of the connecting portion 32 of the above technical solution, on the one hand, during the sliding assembly process of the protection plate 30 and the slide groove 24, the first connecting section 3212 can abut against the supporting member 234, and the entire protection plate 30 slides and rubs against the supporting member 234 through the first connecting section 3212. Compared with the entire edge portion of the protection plate 30 and the supporting member 234, the contact area between the first connecting section 3212 and the supporting member 234 is smaller, thereby reducing the resistance during the sliding assembly process of the protection plate 30 and reducing the difficulty of assembling the protection plate 30. On the other hand, the first transition section 3211 can provide the protection plate 30 with a certain flexibility and assembly adaptability, so as to reduce the stress concentration that may be caused by the protection plate 30 during the assembly process or subsequent use, thereby improving the reliability of the protection plate 30.

[0128] In some embodiments, the first transition section 3211 may also be bent along the thickness direction Z and in a direction close to the wall panel 22. With such a configuration, after the first connecting section 3212 is connected to the supporting member 234, the first transition section 3211 can allow a gap to exist between the main body 31 and the wall panel 22. When the protection plate 30 is impacted, the gap can provide a certain deformation space for the protection plate 30. The protection plate 30 absorbs a part of the impact force by its own deformation, thereby reducing the impact force on the wall panel 22 and thus reducing the risk of damage to the wall panel 22.

[0129] In some embodiments, the connecting portion 32 also includes a second step 322, the second step 322 includes a second transition section 3221 and a second connecting section 3222, the second transition section 3221 is bent relative to the first connecting section 3212 along the thickness direction Z and away from the wall panel 22, the second transition section 3221 is connected between the first connecting section 3212 and the second connecting section 3222, and at least a portion of the second connecting section 3222 is located in the slide groove 24 and is detachably connected to the supporting member 234.

[0130] The second transition section 3221 extends from the first connection section 3212 and bends along the thickness direction Z and away from the wall plate 22, forming a certain angle with the first connection section 3212. The first transition section 3211 can further enhance the flexibility and assembly adaptability of the connecting portion 32, so as to further reduce the stress concentration that may be caused by the direct connection between the protection plate 30 and the supporting member 234.

[0131] The second connecting section 3222 can be used as the main part for connecting the connecting portion 32 with the supporting member 234. The second connecting section 3222 can be partially located in the slide slot 24, or can be completely located in the slide slot 24.

[0132] For example, the second step 322 may be formed on the first step 321 by a stamping process.

[0133] In some examples, the plane where the second connecting section 3222 is located is parallel to the plane where the main body 31 is located.

[0134] In some examples, the second connecting section 3222 is closely connected to the supporting member 234 to increase the connection contact area between the second connecting section 3222 and the supporting member 234 and improve the connection stability.

[0135] The above technical solution can further enhance the flexibility and assembly adaptability of the connecting portion 32 by introducing the second step 322 , so as to further reduce the stress concentration that may be caused by the protection plate 30 during the assembly process or subsequent use, and further improve the reliability of the protection plate 30 .

[0136] In some embodiments, the first transition section 3211 may be bent relative to the main body 31 along the thickness direction Z and away from the wall plate 22 . The second transition section 3221 may be bent relative to the first connection section 3212 along the thickness direction Z and close to the wall plate 22 .

[0137] In some embodiments, the first transition section 3211 may be bent relative to the main body 31 along the thickness direction Z and close to the wall plate 22 . The second transition section 3221 may be bent relative to the first connection section 3212 along the thickness direction Z and close to the wall plate 22 .

[0138] In some embodiments, the battery device 2 further includes a buffer component 40 , which is connected between the frame body 233 and the connecting portion 32 , and the elastic modulus of the buffer component 40 is greater than the elastic modulus of the protection plate 30 .

[0139] Exemplarily, the buffer component 40 may be fixedly connected to the frame body 233 and abut against the connecting portion 32; it may also be fixedly connected to the connecting portion 32 and abut against the frame body 233; it may also be fixedly connected to both the frame body 233 and the connecting portion 32.

[0140] As an example, when the buffer component 40 is fixedly connected to the connecting portion 32 and abuts against the frame body 233, the buffer component 40 can be detachably connected to the connecting portion 32, or can be integrally provided on the connecting portion 32. The buffer component 40 can be directly connected to the connecting portion 32, or can be restricted to the connecting portion 32 by other components. As an example, the connection method of the buffer component 40 and the connecting portion 32 can be, but is not limited to, bolt connection, welding, riveting, clamping or bonding, etc.

[0141] The high elastic modulus of the buffer component 40 enables it to effectively disperse the load when subjected to external impact or vibration, so as to absorb a certain impact force when the battery device 2 is subjected to external impact, reduce the direct effect of the external force on the connecting portion 32, and thus reduce the risk of connection failure between the protection plate 30 and the box body 20. The protection plate 30 has a lower elastic modulus and can more effectively protect the box body 20.

[0142] Optionally, the buffer component 40 includes but is not limited to polyurethane, polyamide, silicone rubber or metal elastic material (such as spring steel or titanium alloy, etc.).

[0143] Optionally, the buffer component 40 may be a block-shaped structure, a columnar structure, a plate-shaped structure, or the like.

[0144] For example, the elastic modulus of the buffer component 40 and the protection plate 30 may be measured by a static mechanical test, such as a tensile test, a compression test, or a bending test.

[0145] In some embodiments, the battery device 2 also includes a fastener 50, the frame body 233 is provided with a first through hole, the supporting member 234 is provided with a second through hole, and the connecting portion 32 is provided with a third through hole. The first through hole, the second through hole and the third through hole correspond to each other along the thickness direction Z, and the fastener 50 passes through the first through hole, the second through hole and the third through hole and is fixed to the frame 23.

[0146] Exemplarily, the projection of the first through hole along the thickness direction Z, the projection of the second through hole along the thickness direction Z, and the projection of the third through hole along the thickness direction Z may overlap or partially overlap, as long as the fastener 50 can pass through.

[0147] In some examples, after the fastener passes through the first through hole, the second through hole, and the third through hole, one end of the fastener 50 is fixed to the frame body 233, and the other end is fixed to the carrier. In other words, the fastener 50 is only locked with the frame body 233 and the carrier, but not with the connecting portion 32. In this way, when the battery device 2 is in a vibration environment or is hit, the external force transmitted from the fastener 50 to the protection plate 30 can be reduced, and the reliability of the protection plate 30 can be improved.

[0148] In some examples, after the fastener 50 passes through the first through hole, the second through hole, and the third through hole, the frame body 233, the supporting member 234, and the supporting member 234 are all fixedly connected to the fastener 50, which can effectively improve the connection reliability.

[0149] Optionally, the fastener 50 may be, but is not limited to, a bolt, a screw, or a rivet.

[0150] In some examples, an external thread is provided on the outer peripheral surface of the fastener 50, and an internal thread matching the external thread of the fastener 50 is provided on the side wall of at least one of the first through hole, the second through hole and the third through hole. After the fastener 50 passes through the first through hole, the second through hole and the third through hole, locking is achieved by relying on the cooperation between the external thread and the internal thread.

[0151] In other examples, an external thread is provided on the outer peripheral surface of the fastener 50, and after the fastener 50 passes through the first through hole, the second through hole and the third through hole, locking is achieved by the cooperation between the nut and the external thread of the fastener 50.

[0152] The above technical solution introduces the fastener 50, which can not only provide a strong clamping force to improve the connection firmness of the protection plate 30, but also enable the protection plate 30 and the frame 23 to form an integral structure, thereby improving the impact resistance of the protection plate 30.

[0153] In some embodiments, the battery device 2 further includes a heat exchange component 60, which is connected to the side of the wall plate 22 facing the battery cell 10. A first recess is provided on the side of the wall plate 22 facing the heat exchange component 60, and at least a portion of the heat exchange component 60 is accommodated in the first recess.

[0154] For example, the heat exchange component 60 can be heat-conductively connected (e.g., attached) to at least a portion of the battery cell 10, and the heat exchange medium flows in the heat exchange component 60 and exchanges heat with the battery cell 10 through the wall of the heat exchange component 60. When the temperature of the battery cell 10 is too high, the heat exchange component 60 can cool the battery cell 10; when the temperature of the battery cell 10 is too low, the heat exchange component 60 can keep the battery cell 10 warm to increase the service life of the battery.

[0155] As an example, a channel is provided inside the heat exchange component 60, and the channel is used to accommodate the heat exchange medium. The wall of the heat exchange component 60 refers to the part surrounding the channel.

[0156] The channel inside the heat exchange component 60 may extend along a straight line or a curve, which can be selected according to the actual application environment.

[0157] Optionally, the heat exchange medium may be a liquid or a gas, etc., wherein the liquid may be but is not limited to water, hot oil, ethylene glycol, alcohol, etc.; the gas may be but is not limited to air, nitrogen, or hydrogen, etc.

[0158] The heat exchange component 60 can be detachably connected to the wall plate 22, or can be integrally provided on the wall plate 22. The heat exchange component 60 can be directly connected to the wall plate 22, or can be restricted to the wall plate 22 by other components. As an example, the connection method between the heat exchange component 60 and the wall plate 22 can be, but is not limited to, bolt connection, welding, riveting, clamping or bonding.

[0159] The heat exchange component 60 may be partially or completely contained in the first recess. The introduction of the first recess can reduce the space occupied by the heat exchange component 60 and improve the compactness of the structure inside the battery device 2.

[0160] It is understandable that the heat exchange component 60 has a heat exchange medium inside. If the heat exchange component 60 is cracked by external impact, the heat exchange medium will spray out, causing damage to the battery cells 10, electrical connectors or other related components inside the battery device 2, and in serious cases, it may cause major safety hazards. Therefore, it is a high-frequency use requirement to install a protective plate 30 on the side of the wall plate 22 facing away from the heat exchange component 60.

[0161] The above technical solution is particularly aimed at the position of the battery device 2 where the protection plate 30 needs to be frequently installed or replaced, and introduces a design of sliding fit between the protection plate 30 and the box body 20, so that the return on investment is relatively high, which helps to maximize the economic benefits.

[0162] In some embodiments, the wall plate 22 is further provided with a first convex portion corresponding to the first concave portion, and the first convex portion protrudes from the surface of the wall plate 22 on one side facing away from the heat exchange component 60. A second concave portion corresponding to the first convex portion is provided on the side of the protection plate 30 facing the wall plate 22, and at least a portion of the first convex portion is accommodated in the second concave portion.

[0163] For example, a recessed area may be formed locally on the wall panel 22 through a stamping process, and the recessed area is manifested as a first recessed portion on the side of the wall panel 22 along the thickness direction Z facing the heat exchange component 60 , and as a first protrusion on the side of the wall panel 22 along the thickness direction Z facing away from the heat exchange component 60 .

[0164] The cooperation between the first concave portion and the first convex portion can not only simplify the preparation process of the first concave portion, but also further improve the structural strength of the wall panel 22 .

[0165] The first convex portion may be partially or entirely accommodated in the second concave portion.

[0166] The above technical solution can reduce the space occupancy of the wall plate 22 and improve the compactness of the structure inside the battery device 2 by introducing the second recess.

[0167] In some embodiments, the protection plate 30 is further provided with a second convex portion corresponding to the second concave portion, and the second convex portion protrudes from a surface of the protection plate 30 on one side facing away from the wall plate 22 .

[0168] For example, a recessed area may be formed locally on the protective plate 30 through a stamping process, and the recessed area is manifested as a second recessed portion on the side of the protective plate 30 along the thickness direction Z facing the wall panel 22 , and as a second recessed portion on the side of the wall panel 22 along the thickness direction Z facing away from the wall panel 22 .

[0169] Through the cooperation between the second concave portion and the second convex portion, not only the preparation process of the second concave portion can be simplified, but also the structural strength of the protection plate 30 can be further improved.

[0170] In some embodiments, at least a portion of the protection panel 30 is attached to the wall panel 22 .

[0171] Exemplarily, the protection plate 30 may be partially attached to the wall plate 22 , or may be completely attached to the wall plate 22 .

[0172] The above technical solution can reduce the size of the battery device 2 along the thickness direction Z of the wall plate 22 , which helps to improve the structural compactness and energy density of the battery device 2 .

[0173] In some embodiments, there is a gap between the protective plate 30 and the wall panel 22. When the protective plate 30 is impacted, the gap can provide a certain deformation space for the protective plate 30. The protective plate 30 absorbs part of the impact force by its own deformation, thereby reducing the impact force on the wall panel 22 and reducing the risk of damage to the wall panel 22.

[0174] In some embodiments, there is a gap between the main body 31 and the wall plate 22 .

[0175] In some embodiments, the battery cell 10 is supported on a wall plate 22. Exemplarily, the wall plate 22 may also be referred to as a bottom plate of the box body 20, and the protection plate 30 may also be referred to as a bottom guard plate.

[0176] The battery cell 10 is supported on the wall plate 22 , which means that the wall plate 22 is used to provide a supporting force for the battery cell 10 , wherein the supporting force provided by the wall plate 22 for the battery cell 10 is opposite to the gravity exerted on the battery cell 10 .

[0177] It is understandable that in the daily use environment of the battery device 2, the bottom of the battery device 2 has a greater risk of being impacted by the external environment, and the battery cells 10 are supported on the wall plate 22, so that the impact resistance of the wall plate 22 is relatively high. Therefore, installing a protective plate 30 at the bottom of the battery device 2 is a high-frequency use requirement.

[0178] The above technical solution is particularly aimed at the position of the battery device 2 where the protection plate 30 needs to be frequently installed or replaced, and introduces a design of sliding fit between the protection plate 30 and the box body 20, so that the return on investment is relatively high, which helps to maximize the economic benefits.

[0179] According to some embodiments of the present application, the present application further provides an electrical device, comprising a battery device 2 of any of the above schemes, and the battery device 2 is used to store or provide electrical energy.

[0180] If not otherwise specified, all implementations and optional implementations of the present application can be combined with each other to form a new technical solution. All technical features and optional technical features of the present application can be combined with each other to form a new technical solution.

[0181] In order to better understand the battery device 2 provided in the embodiment of the present application, based on the same inventive concept, an embodiment of the above-mentioned battery device 2 in actual application is provided here for illustration.

[0182] The embodiment of the present application provides a battery device 2, which includes a battery cell 10, a box body 20 and a protection plate 30. The box body 20 includes a receiving space 21, a wall plate 22 and a frame 23. The battery cell 10 is carried by the wall plate 22 and received in the receiving space 21. The wall plate 22 is arranged at one side of the receiving space 21. The protection plate 30 is slidably matched with the box body 20 and is detachably connected to the box body 20. At least a portion of the protection plate 30 is arranged on a side of the wall plate 22 that faces away from the receiving space 21.

[0183] The frame 23 is arranged around the accommodating space 21 and is connected to the wall panel 22. The frame 23 includes a frame body 233 and a supporting member 234. The supporting member 234 is connected to the frame body 233. At least a portion of the supporting member 234 is arranged on a side of the frame body 233 close to the wall panel 22 along the thickness direction Z, and forms a slide groove 24 together with the frame body 233. The protective plate 30 is slidably matched with the slide groove 24 and is detachably connected to the frame 23.

[0184] The protection plate 30 includes a main body 31 and a connecting portion 32, wherein the connecting portion 32 is connected to the corner of the main body 31. The connecting portion 32 includes a first step 321 and a second step 322, wherein the first step 321 includes a first transition section 3211 and a first connecting section 3212, wherein the first transition section 3211 is bent relative to the main body 31 along the thickness direction Z and away from the wall plate 22, and the first transition section 3211 is connected between the main body 31 and the first connecting section 3212. The second step 322 includes a second transition section 3221 and a second connecting section 3222, wherein the second transition section 3221 is bent relative to the first connecting section 3212 along the thickness direction Z and away from the wall plate 22, and the second transition section 3221 is connected between the first connecting section 3212 and the second connecting section 3222, and at least a portion of the second connecting section 3222 is located in the slide groove 24 and is detachably connected to the supporting member 234.

[0185] When assembling the protection plate 30, the above technical solution slides the protection plate 30 and the box body 20 together, and the protection plate 30 and the box body 20 are detachably connected in a state where at least part of the protection plate 30 is located on the side of the wall panel 22 facing away from the accommodating space 21. This design not only structurally simplifies the loading and unloading process of the protection plate 30, but also enables the operator to quickly install and disassemble the protection plate 30 without using complicated tools or performing tedious fixing steps, thereby improving the assembly convenience and applicability of the battery device 2.

[0186] The design of the connecting portion 32 can not only reduce the resistance during the sliding assembly process of the protection plate 30 and reduce the assembly difficulty of the protection plate 30, but also provide the protection plate 30 with a certain flexibility and assembly adaptability, thereby improving the reliability of the protection plate 30.

[0187] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0188] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: include: Battery cells; A box body, comprising a containing space and a wall plate, wherein the battery monomer is contained in the containing space, and the wall plate is arranged on one side of the containing space; The protection plate is slidably matched with the box body and detachably connected to the box body, and at least a part of the protection plate is arranged on a side of the wall plate facing away from the accommodating space.

2. The battery device according to claim 1, characterized in that: The battery device further comprises a frame, which is arranged around the accommodating space and connected to the wall plate. The frame is provided with a slide groove, and the protection plate is slidably matched with the slide groove and is detachably connected to the frame.

3. The battery device according to claim 2, characterized in that: The frame includes a first beam and a second beam, wherein the first beam and the second beam are arranged opposite to each other along a first direction; The slide groove includes a first groove and a second groove, the first groove is arranged on the first beam, the second groove is arranged on the second beam, the first groove and the second groove are both extended along the second direction, and the first direction, the second direction and the thickness direction of the wall plate are perpendicular to each other.

4. The battery device according to claim 2, characterized in that: The slide groove is arranged on a side of the frame close to the wall plate along the thickness direction of the wall plate.

5. The battery device according to claim 3, characterized in that: The frame includes a frame body and a supporting member, the supporting member is connected to the frame body, at least a portion of the supporting member is arranged on a side of the frame body close to the wall plate along the thickness direction, and forms the slide groove together with the frame body.

6. The battery device according to claim 5, characterized in that: The protection plate comprises a main body and a connecting portion, wherein the connecting portion is connected to a corner of the main body, and at least a portion of the connecting portion is located in the slide groove and is detachably connected to the supporting member; The connecting portion includes a first step, the first step includes a first transition section and a first connecting section, the first transition section is bent relative to the main body along the thickness direction and away from the wall panel, and the first transition section is connected between the main body and the first connecting section.

7. The battery device according to claim 6, characterized in that: The connecting portion also includes a second step, the second step includes a second transition section and a second connecting section, the second transition section is bent relative to the first connecting section along the thickness direction and away from the wall panel, the second transition section is connected between the first connecting section and the second connecting section, and at least a portion of the second connecting section is located in the slide groove and is detachably connected to the supporting member.

8. The battery device according to claim 6, characterized in that: The battery device further includes a buffer component connected between the frame body and the connecting portion, and an elastic modulus of the buffer component is greater than an elastic modulus of the protection plate.

9. The battery device according to claim 6, characterized in that: The battery device also includes a fastener, the frame body is provided with a first through hole, the supporting member is provided with a second through hole, and the connecting portion is provided with a third through hole, the first through hole, the second through hole and the third through hole correspond to each other along the thickness direction, and the fastener passes through the first through hole, the second through hole and the third through hole and is fixed to the frame.

10. The battery device according to claim 1, characterized in that: The battery device further comprises a heat exchange component connected to a side of the wall plate facing the battery cell; A first recess is provided on a side of the wall plate facing the heat exchange component, and at least a portion of the heat exchange component is accommodated in the first recess.

11. The battery device according to claim 10, characterized in that: The wall plate is further provided with a first convex portion corresponding to the first concave portion, and the first convex portion protrudes from a surface of the wall plate on one side facing away from the heat exchange component; A second recess corresponding to the first protrusion is provided on one side of the protection plate facing the wall plate, and at least a part of the first protrusion is accommodated in the second recess.

12. The battery device according to claim 1, characterized in that: At least a portion of the protection plate is attached to the wall plate.

13. The battery device according to any one of claims 1 to 12, characterized in that: The battery cells are supported on the wall plate.

14. An electrical device, characterized in that: The invention comprises a battery device as described in any one of claims 1 to 13, wherein the battery device is used to store or provide electrical energy.

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