A battery device and an electric device

Abstract

The utility model relates to battery technology field discloses a kind of battery device and electric device, and battery device includes box and battery monomer;Box includes enclosure, upper cover and bottom plate, enclosure has the first opening end surface and the second opening end surface being spaced along axial direction, upper cover and bottom plate are respectively covered in the first opening end surface and the second opening end surface to form accommodating cavity, and battery monomer is set in accommodating cavity;First joint gap is between upper cover and the first opening end surface, and second joint gap is between bottom plate and the second opening end surface;Enclosure is provided with shielding structure, and the orthographic projection of shielding structure on at least one plane parallel to axial direction covers the orthographic projection of at least part of first joint gap on plane, and / or covers the orthographic projection of at least part of second joint gap on plane。By setting shielding structure, it can not need additional increase sealing material, so that box has the ability to resist high pressure / high speed water flow impact, and reaches IPX9K level protection standard.

Description

Technical Field

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

[0002] With the rapid development of the new energy vehicle industry, the sealing reliability of battery packs has become a key indicator for ensuring the safe operation of the entire vehicle. In complex actual operating conditions, sealing methods such as sealing strips, gaskets, or sealants face multiple challenges, including environmental loads and fatigue failure, risks of extreme fluid impact, and the conflict between cost and compatibility.

[0003] Therefore, it is desirable to provide a battery device and an electrical device that can achieve efficient protection against the impact of external high pressure / high speed water flow with a low cost. Utility Model Content

[0004] Some embodiments of this specification provide a battery device, including a housing and battery cells; the housing includes a frame, a top cover, and a bottom plate, the frame having a first open end face and a second open end face spaced apart along the axial direction, the top cover and the bottom plate respectively covering the first open end face and the second open end face to form a receiving cavity, and the battery cells are disposed in the receiving cavity; a first engagement gap is formed between the top cover and the first open end face, and a second engagement gap is formed between the bottom plate and the second open end face; the frame is provided with a shielding structure, the orthographic projection of the shielding structure on at least one plane parallel to the axial direction covers at least a portion of the orthographic projection of the first engagement gap on the plane, and / or covers at least a portion of the orthographic projection of the second engagement gap on the plane.

[0005] In the technical solutions provided in the embodiments of this specification, the impact of high-pressure water flow can be effectively blocked by setting a shielding structure, without the need for additional sealing materials, so that the enclosure has the ability to resist the impact of high-pressure / high-speed water flow and achieves the IPX9K protection standard.

[0006] In some embodiments, the shielding structure includes a first rib structure disposed at the edge of the first opening end face of the frame and extending along the axial direction toward the side away from the frame.

[0007] In the technical solution provided in the embodiments of this specification, by setting a first rib structure at the edge of the first opening end face of the frame, the direct impact of high-speed water flow on the sealing structure within the joint gap can be blocked, effectively dispersing the kinetic energy of the high-speed water flow and reducing the dynamic load on the sealing structure. Furthermore, the first rib structure can also increase the elastic modulus of the frame (such as the first opening end face), significantly improving the bending and torsional resistance of the housing. In addition, adding the first rib structure locally rather than thickening the housing as a whole can save material costs and meet the lightweight structural requirements of the battery device.

[0008] In some embodiments, a drainage groove is provided on the first rib structure.

[0009] In the technical solution provided in the embodiments of this specification, by opening a drainage groove on the first rib structure, when condensate or other liquids accumulate at the first joint gap, the liquid can be discharged in time through the drainage groove, avoiding the formation of liquid accumulation between the first rib structure and adjacent components, thereby effectively preventing corrosion problems caused by long-term liquid retention, while taking into account both the drainage function and the shielding protection function of the shielding structure.

[0010] In some embodiments, the shielding structure includes a second rib structure disposed at the edge of the second opening end face of the frame and extending along the axial direction toward the side away from the frame.

[0011] In the technical solution provided in the embodiments of this specification, by setting an axially extending second rib structure at the edge of the second opening end face of the enclosure, the direct impact of high-speed water flow on the bottom sealing structure under ground rebound or wading conditions can be effectively blocked. Moreover, by adding the second rib structure, the elastic modulus of the enclosure (such as the second opening end face) can also be increased, significantly improving the compressive strength at the connection between the bottom plate and the enclosure. At the same time, it can evenly distribute external impact force or load to the entire box, avoiding deformation or cracking caused by local stress concentration. In addition, the second rib structure forms a sealing barrier between the bottom plate and the enclosure, which can effectively prevent rainwater or oil stains from seeping into the inside of the box, protecting the battery cells inside the box.

[0012] In some embodiments, the edge of the top cover is provided with a flange, which bends toward the top cover along the axial direction toward the side close to the frame.

[0013] In the technical solution provided in the embodiments of this specification, by setting a flange that bends towards the frame at the edge of the top cover, the erosion of the sealing structure by high-speed water flow can be directly blocked. While enhancing the bending stiffness of the top cover edge, the flange can more evenly distribute the compressive stress of the sealing material (such as foam), improve the bending and compressive strength of the top cover, and reduce the deformation or collapse of the top cover caused by external forces. Moreover, compared with the rib structure, the flange consumes less additional material and has a lower manufacturing cost.

[0014] In some embodiments, the enclosure includes a plurality of side beams, with adjacent side beams connected by a connecting plate to form the enclosure.

[0015] In the technical solutions provided in the embodiments of this specification, the modular combination and connection of the frame beams and connecting plates can improve the adaptability of the frame to the installation position (e.g., vehicle chassis), enhance the connection strength between the frame beams and the overall rigidity of the frame.

[0016] In some embodiments, the second rib structure is disposed at at least a portion of the edges of the plurality of frame beams; the second joint gap between the connecting plate and its connection area with the frame beams and the base plate is filled with sealant.

[0017] In the technical solutions provided in the embodiments of this specification, for complex areas such as corners, localized adhesive application can solve the problem of weak protection caused by the breakage of the second rib structure at the connecting plate, ensuring a full-circumference sealing effect for the enclosure. By locally setting a second rib structure at the edge of the frame beam, the erosion resistance of the enclosure can be guaranteed while optimizing the lightweight design.

[0018] In some embodiments, a sealing structure is provided in the first engagement gap and the second engagement gap.

[0019] In the technical solutions provided in the embodiments of this specification, the sealing structure is continuously arranged along the extension direction of the joint gap, filling and sealing the first and second joint gaps to form a complete sealing boundary. This prevents foreign objects such as moisture and dust from entering the battery device, ensuring a stable operating environment for the battery module. Moreover, the sealing structure can effectively compensate for manufacturing tolerances of structural components while working in conjunction with the external shielding structure to significantly improve the overall sealing protection level of the battery device, ensuring that the battery device maintains long-term stable sealing reliability under complex vibration and fluid erosion conditions.

[0020] In some embodiments, the shielding structure and the enclosure frame are integrally formed.

[0021] In the technical solutions provided in the embodiments of this specification, the shielding structure and the frame are manufactured using a one-piece molding method, eliminating physical seams between the two, preventing leakage paths, and enhancing waterproof performance. Furthermore, the seamless and connection-free one-piece molding structure also improves structural strength and enhances the impact resistance and stability of the battery device.

[0022] This specification provides one or more embodiments of an electrical device, which includes the aforementioned battery device, the battery device serving as a power source for the electrical device and / or an energy storage unit for the electrical device. Attached Figure Description

[0023] Figure 1 This is an exploded view of a battery device according to some embodiments of this specification;

[0024] Figure 2 These are schematic diagrams of the housing structure shown in some embodiments of this specification; Figure 3 This is a structural schematic diagram of the lower housing according to some embodiments shown in this specification; Figure 4 yes Figure 2A partial cross-sectional view along the central AA direction; Figure 5 yes Figure 2 Another partial cross-section along the AA direction; Figure 6 This is a schematic diagram of the first rib structure and the drainage channel shown in some embodiments of this specification; Figure 7 This is a schematic diagram of the structure of the top cover according to some embodiments of this specification; Figure 8 yes Figure 2 Another partial cross-section along the AA direction; Figure 9 yes Figure 2 Enlarged view of point B in the middle; Figure 10 yes Figure 2 Another enlarged view of point B in the middle.

[0025] Reference numerals: 1. Battery assembly; 10. Housing; 11. Frame; 12. Top cover; 13. Bottom plate; 14. Sealing structure; 20. Battery cell; 121. Flanged edge; 110. Shielding structure; 111. First rib structure; 112. Drainage channel; 113. Second rib structure; 114. Frame beam; 115. Connecting plate; 116. First opening end face; 117. Second opening end face; 118. Sealant. Detailed Implementation

[0026] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0028] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, "multiple groups" means two or more, and "each" means each of the multiple, unless otherwise explicitly defined.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] The technical solutions described in some embodiments of this specification are applicable to various electrical devices that use battery devices, such as mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric vehicles can be gasoline-powered vehicles, natural gas-powered vehicles, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.

[0033] In some embodiments, the battery device may use the power source (such as an operating power source or drive power source) of the electrical device (such as a new energy vehicle). The battery device may also use the energy storage unit of the electrical device. Alternatively, the battery device may simultaneously use both the power source of the electrical device and the energy storage unit. The energy storage unit stores electrical energy and can release it on demand, providing energy reserves for the electrical device.

[0034] Reference Figure 1 , Figure 1 This is an exploded view of a battery device according to some embodiments of this specification.

[0035] like Figure 1As shown, the battery device 1 includes a housing 10 and battery cells 20. The housing 10 serves to carry and protect the internal battery cells 20 and other related components, and can adopt various structural forms. In some embodiments, the housing 10 includes an upper cover 12 and a lower housing, with the upper cover 12 covering the opening side of the lower housing. In some embodiments, the lower housing further includes a frame 11 and a base plate 13. The frame 11, upper cover 12, and base plate 13 can form a receiving cavity, within which the battery cells 20 are disposed.

[0036] In some embodiments, the housing 10 may be part of the vehicle's chassis structure. For example, a portion of the housing 10 (e.g., floor 13) may be at least a portion of the vehicle's floor, or a portion of the housing 10 (e.g., frame 11) may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0037] A single battery cell 20 refers to the basic electrochemical unit that enables the storage and release of electrical energy. In the battery device 1, there can be multiple battery cells 20, which can be connected in series, parallel, or in a hybrid configuration. A hybrid configuration means that multiple battery cells 20 are connected in both series and parallel connections. Multiple battery cells 20 can be directly connected in series, parallel, or in a hybrid configuration, and then the entire assembly of these multiple battery cells 20 is housed within the housing 10. Alternatively, the battery device 1 can also consist of multiple battery cells 20 first connected in series, parallel, or in a hybrid configuration to form battery modules, and then these battery modules are connected in series, parallel, or in a hybrid configuration to form a whole, which is then housed within the housing 10.

[0038] In practical applications, under conditions such as wading, rapid acceleration through water pits, or high-pressure steam cleaning, the battery pack casing is susceptible to high-speed water flow impact, leading to sealing failure or corrosion and wear of the casing materials. Currently, battery pack casings mostly employ sealing structures such as sealing strips, gaskets, or sealants. However, in complex actual operating environments, the aforementioned sealing technologies face multiple challenges, including environmental loads and fatigue failure, risks from extreme fluid impacts, and the trade-off between cost and compatibility.

[0039] Taking vehicle battery packs as an example, battery packs are constantly exposed to complex and changing external environments. Especially when a vehicle experiences deep water wading, rapid acceleration through puddles (generating strong shock waves), or high-pressure steam cleaning (e.g., under IPX9K conditions), the battery pack casing may be directly impacted by high-speed water flow. When high-speed water flow directly acts on the tiny joint gaps between the top cover and frame, or between the bottom plate and frame, the battery pack's sealing structure may not be able to effectively resist the impact kinetic energy of the fluid. The shear force generated by the high-speed water flow can easily cause localized peeling or compression deformation of the sealing structure, thus forming fluid channels at the sealing interface, allowing moisture to seep into the battery pack casing. Furthermore, high-speed water flow mixed with mud and other debris has a certain corrosive strength. Long-term direct impact from high-speed water flow may cause wear and detachment of the sealing structure edges, or accelerate the chemical degradation and physical aging of the sealing material, severely affecting the sealing performance of the sealing structure.

[0040] Based on this, some embodiments of this specification propose a battery device, including a housing and individual battery cells. The housing includes a frame, a top cover, and a bottom plate. The frame is provided with a shielding structure, which is used to shield the sealing structure between the frame and the top cover, and between the frame and the bottom plate. That is, by using physical shielding to disperse the kinetic energy of water flow, it can effectively shield the high-pressure water flow coming from the side of the housing, and prevent the water flow from directly acting on the sealing structure. Thus, it can meet the IPX9K level sealing requirements of the battery device with a small investment, and improve the sealing reliability and service life of the battery device.

[0041] IPX9K is an international protection rating for waterproofing, specifically designed to withstand extreme and harsh environments. IPX9K primarily simulates the waterproofing capabilities of equipment under high-temperature, high-pressure water jet impacts, such as in high-pressure steam cleaning scenarios. Equipment of this rating is typically found in automotive, industrial, or outdoor applications requiring rigorous cleaning processes.

[0042] Figure 2 This is a structural schematic diagram of the housing according to some embodiments of this specification. Figure 3 This is a structural schematic diagram of the lower housing according to some embodiments of this specification.

[0043] In some embodiments, such as Figures 1-3As shown, the battery device 1 includes a housing 10 and a battery cell 20. The housing 10 includes a frame 11, a top cover 12, and a bottom plate 13. The frame 11 has a first open end face 116 and a second open end face 117 spaced apart along an axial direction (e.g., the axial direction of the frame 11, i.e., the vertical direction). The top cover 12 and the bottom plate 13 respectively cover the first open end face 116 and the second open end face 117 to form a receiving cavity, in which the battery cell 20 is disposed. A first engagement gap is formed between the top cover 12 and the first open end face 116, and a second engagement gap is formed between the bottom plate 13 and the second open end face 117. The frame 11 is provided with a shielding structure 110, the orthographic projection of which covers at least a portion of the orthographic projection of the first engagement gap on the plane and / or covers at least a portion of the orthographic projection of the second engagement gap on the plane.

[0044] The frame 11 is the intermediate frame structure of the box 10.

[0045] In some embodiments, the frame 11 has a central cavity extending along its axial direction, and both ends of the frame 11 are respectively formed with open end faces for connecting the upper cover 12 and the bottom plate 13, which together enclose and form an accommodating cavity. In some embodiments, the axial direction is a direction perpendicular to the plane where the open end faces of the frame 11 are located, such as the vertical direction.

[0046] The receiving cavity is an internal space enclosed by the upper cover 12, the surrounding frame 11, and the bottom plate 13. It should be noted that the shape of the receiving cavity can be determined according to actual assembly requirements.

[0047] In some embodiments, the frame 11 is one of the load-bearing components of the battery device 1, which can maintain the geometry and structural rigidity of the housing 10.

[0048] In some embodiments, the frame 11 may be a one-piece structure or a composite structure. For example, the frame 11 may be assembled from multiple components (such as the border beams described below).

[0049] The first open end face 116 is the open plane of the frame 11 located at one end of its axial direction. For example, it is the upper end face used to close with the cover 12. The second open end face 117 is the open plane of the frame 11 located at the other end of its axial direction. For example, it is the lower end face used to close with the base plate 13. Here, "closing" refers to the process by which two components form a relatively closed or complete structure through physical contact and positioning.

[0050] It should be noted that the shapes of the first opening end face 116 and the second opening end face 117 are not limited to planes, and may also include stepped surfaces, inclined surfaces, arc surfaces, or discontinuous planes composed of multiple geometric surfaces. The specific shapes of the first opening end face 116 and / or the second opening end face 117 should be such that they can be fitted with the upper cover 12 or the bottom plate 13 to form the box 10 and meet the sealing effect. In addition, the names of the first opening end face 116 and the second opening end face 117 are only used to distinguish the two opening end faces of the frame 11 in its axial direction, and their specific orientation is not limited here.

[0051] The top cover 12 is the top covering component of the housing 10.

[0052] In some embodiments, the top cover 12 covers the first opening end face 116 of the frame 11 and together with the frame 11 and the base plate 13, forms a closed accommodating cavity. The top cover 12 can be used to protect the battery cells 20 inside the accommodating cavity and prevent external dust, moisture or contaminants from entering the accommodating cavity.

[0053] The bottom plate 13 is the bottom covering component of the box body 10.

[0054] In some embodiments, the base plate 13 covers the second open end face 117 of the frame 11 and together with the frame 11 and the top cover 12, forms a closed accommodating cavity. The base plate 13 serves as the main load-bearing foundation of the battery device 1, bearing the weight of the battery cell 20 and external installation loads.

[0055] In some embodiments, the frame 11, the cover 12 and the base plate 13 may be made of metal alloys (e.g., aluminum alloys, titanium alloys, alloy steels, etc.), composite materials, carbon fibers or other high-strength materials.

[0056] In some embodiments, the frame 11, the top cover 12, and the base plate 13 can be manufactured by processes such as sheet metal work, injection molding, compression molding, and cutting.

[0057] The first joint gap refers to the gap formed at the sealing interface after the upper cover 12 and the first open end face 116 of the frame 11 are closed. The second joint gap refers to the gap formed at the sealing interface after the bottom plate 13 and the second open end face 117 of the frame 11 are closed.

[0058] In some embodiments, a sealing structure is provided inside and / or at the edge of the first engagement gap and the second engagement gap. More information about the sealing structure can be found below (e.g., Figures 4-5 The relevant description in ) .

[0059] The shielding structure 110 is a structure used to shield the joint gap. For example, the shielding structure 110 may include at least one of the following: a protrusion, a baffle, a rib, a flange, a vertical rib, etc.

[0060] In some embodiments, the orthographic projection of the shielding structure 110 on at least one plane parallel to the axial direction of the frame 11, covering at least a portion of the orthographic projection of the first and / or second joint gaps on that plane, can be understood as follows: there is a non-zero overlap region between the orthographic projections of the shielding structure 110 and the first and / or second joint gaps on the same (or more) planes parallel to the axial direction of the frame 11, i.e., the overlap region accounts for any proportion of the orthographic projections of the first and / or second joint gaps on the same (or more) planes. Taking the first joint gap as an example, the orthographic projection of the shielding structure 110 on the aforementioned plane covers at least a portion of the orthographic projection of the first joint gap on that plane along its length direction, or the orthographic projection of the shielding structure on the aforementioned plane covers at least a portion of the orthographic projection of the first joint gap on that plane along its width direction. Wherein, the orthographic projection of the shielding structure 110 or the first joint gap has a dimension in its length direction greater than its width direction.

[0061] In some embodiments, at least one plane parallel to the axis of the frame 11 can be a vertical plane at any angle. For example, a vertical plane parallel to the long side of the frame, a vertical plane parallel to the short side of the frame, or any plane that is perpendicular to the horizontal plane and parallel to the axis of the frame 11.

[0062] Orthographic projection refers to the projection of a three-dimensional structure onto a plane in a direction perpendicular to the projection plane to form a two-dimensional graphic.

[0063] As an example only, the shielding structure 110 may be provided on the frame 11 and extend along the axial direction of the frame 11 to the side away from the frame 11, thereby shielding the sealing structure in the first joint gap and the second joint gap to improve sealing reliability.

[0064] In some embodiments, the orthographic projection of the shielding structure 110 on at least one plane parallel to the axial direction of the frame 11 can cover at least a portion of the orthographic projection of the first joint gap on the same plane, and simultaneously cover at least a portion of the orthographic projection of the second joint gap on the same plane. That is, the shielding structure 110 can simultaneously cover or shield the first joint gap and the second joint gap. In this case, shielding structures 110 are provided at the edges of the opening end faces at both ends of the frame 11, and extend to both sides away from the frame 11, and their projections simultaneously cover at least a portion of the projections of the first joint gap and the second joint gap on the corresponding planes. More specifically, the extending direction of the shielding structure 110 located on the first opening end face can be perpendicular to the top cover 12 or at a preset angle (e.g., 60°), and the extending direction of the shielding structure 110 located on the second opening end face can be perpendicular to the bottom plate 13 or at a preset angle (e.g., 60°).

[0065] In some embodiments, the orthographic projection of the shielding structure 110 onto at least one plane parallel to the axial direction of the frame 11 may only cover at least a portion of the orthographic projection of the first engagement gap onto the same plane. That is, the shielding structure 110 only covers or shields the first engagement gap. In this case, the shielding structure 110 is disposed at the edge of the first opening end face of the frame 11 and extends away from the frame 11, and its projection covers at least a portion of the projection of the first engagement gap onto the corresponding plane.

[0066] In some embodiments, the orthographic projection of the shielding structure 110 onto at least one plane parallel to the axial direction of the frame 11 may only cover at least a portion of the orthographic projection of the second engagement gap onto the same plane. That is, the shielding structure 110 only covers or shields the second engagement gap. In this case, the shielding structure 110 is disposed at the edge of the second opening end face of the frame 11 and extends away from the frame 11, and its projection covers at least a portion of the projection of the second engagement gap onto the corresponding plane.

[0067] When the orthographic projection of the shielding structure 110 on at least one plane parallel to the axial direction of the frame 11 covers at least a portion of the orthographic projection of the first joint gap on the plane, and / or covers at least a portion of the orthographic projection of the second joint gap on the plane, the high-pressure water jet coming from the side will first impact the shielding structure 110, and will have difficulty directly entering the first joint gap and / or the second joint gap. The kinetic energy of the water jet will be greatly weakened, thereby effectively preventing the impact of the high-pressure water jet and the corrosive wear caused by the suspended particles therein, thereby effectively improving the sealing reliability.

[0068] It is understood that the shielding structure 110 does not need to completely cover or shield the first joint gap and / or the second joint gap circumferentially along the first opening end face and / or the second opening end face, but only shields the first joint gap and / or the second joint gap in certain key areas (e.g., areas where high-speed water flow is prone to intrusion), so as to ensure that the shielding effect meets the application requirements.

[0069] In some embodiments of this specification, by providing shielding structures 110 at the edges of different opening faces of the frame 11, the sealing structure within the joint gap is shielded or covered in a spatial layout, thus blocking interference from high-pressure fluid erosion. Furthermore, the shielding structure 110 effectively disperses the kinetic energy of high-speed water flow, reduces the dynamic load on the sealing structure and the risk of water hammer, and prevents corrosive wear caused by suspended particles in the high-speed water flow. This enables the battery device 1 to meet the IPX9K protection standard, effectively improving the sealing reliability and service life of the battery device 1 under extreme cleaning environments or water immersion conditions.

[0070] In some embodiments, the shielding structure 110 and the frame 11 are integrally formed. For example, the shielding structure 110 and the frame 11 can be formed in one step by processes such as extrusion, casting, molding or stamping.

[0071] It should be noted that the shielding structure 110 can also be fixed to the frame 11 by means of fixed connection (e.g., welding).

[0072] Understandably, the shielding structure 110 and the frame 11 are integrally molded, eliminating physical seams between them, preventing leakage paths, and enhancing waterproof performance. In addition, the seamless and connection-free integral structure also improves structural strength and enhances the impact resistance and stability of the battery device 1.

[0073] In some embodiments, a sealing structure 14 is provided in the first engagement gap and the second engagement gap (see...). Figures 4-5 , Figure 8 ).

[0074] The sealing structure 14 is a sealing element or sealing material disposed within the first and second joint gaps. The sealing structure 14 can be a gasket, a sealing ring, a coated sealing adhesive layer, or a combination of these. For example, the sealing structure 14 can be a highly resilient material, such as EPDM rubber strips, silicone foam, or in-situ curing adhesive. Alternatively, the sealing structure 14 can be a pre-formed closed-loop sealing ring or a liquid adhesive strip coated within the joint gaps.

[0075] In some embodiments, the sealing structures 14 in the first and second joint gaps may be the same or different. As an example only, for the first joint gap at the top of the housing 10, which primarily addresses high-pressure erosion and maintenance disassembly requirements, the sealing structure 14 can be a removable seal (e.g., pre-formed foam). For the second joint gap at the bottom of the housing 10, considering its potential exposure to road surface water, mud and sand impacts, and stone impacts, and its generally non-removable nature, the sealing structure 14 can be a semi-permanent seal (e.g., structural adhesive or sealant combined with gaskets and / or pre-formed foam).

[0076] In some embodiments of this specification, the sealing structure 14 is continuously arranged along the extension direction of the joint gap, filling and sealing the first and second joint gaps to form a complete sealing boundary. This prevents foreign objects such as moisture and dust from entering the battery device, ensuring a stable operating environment for the battery module. Moreover, the sealing structure 14 can effectively compensate for manufacturing tolerances of structural components while working in conjunction with the external shielding structure 110 (i.e., the first / second rib structure forms the first physical shielding barrier, and the sealing structure 14 forms the second sealing barrier, with the two barriers working together). This significantly improves the overall sealing protection level of the battery device, ensuring that the battery device 1 maintains long-term stable sealing reliability under complex vibration and fluid erosion conditions.

[0077] Figure 4 yes Figure 2 A partial cross-sectional view along the AA direction. Figure 5 yes Figure 2 Another partial cross-section along the AA direction.

[0078] In some embodiments, such as Figures 3-5 As shown, the shielding structure 110 includes a first rib structure 111. The first rib structure 111 is disposed at the edge of the first opening end face of the frame 11 and extends axially (e.g., the axial direction of the frame 11) toward the side away from the frame 11.

[0079] The first rib structure 111 is a shielding structure 110 located at the edge of the first opening end face 116 (such as the upper end face) of the frame 11. The first rib structure 111 includes, but is not limited to, vertical ribs, ribs, and other structures.

[0080] In some embodiments, the first rib structure 111 is integrally formed or fixedly connected to the edge of the first open end face 116 of the frame 11, and extends along the axial direction of the frame 11 to the side away from the frame 11, thereby forming a rib-like structure protruding from the end face of the frame 11.

[0081] In some embodiments, the first rib structure 111 is arranged along the edge of the first open end face 116. It can be arranged continuously around the entire edge of the end face along the outer periphery of the first open end face, or it can be arranged in segments at intervals. It can be understood that by providing the first rib structure 111, a circumferential barrier can be formed at the first open end face 116 of the frame 11, which can effectively prevent external foreign objects, dust or liquids from entering the internal space of the housing 10 from the first joint gap, thereby playing a dual role of sealing protection and structural reinforcement.

[0082] The extension length of the first rib structure 111 can be designed according to the actual assembly gap and shielding requirements. In some embodiments, the axial extension length of the first rib structure 111 is set to abut against or maintain a small gap with the surface of the adjacent mating component (such as the upper cover 12) to ensure shielding effect without affecting normal assembly. In other embodiments, the first opening end face 116 of the frame 11 may be slightly larger than the upper cover 12. In this case, the extension length of the first rib structure 111 will not interfere with the precision assembly of the frame 11 and the upper cover 12, but will completely shield or cover the first engagement gap in the axial direction of the frame 11.

[0083] The cross-sectional shape of the first rib structure 111 in a plane parallel to the axial direction of the frame 11 can be rectangular, trapezoidal, arc-shaped, or other geometric shapes that facilitate processing and assembly. For example, the end of the first rib structure 111 away from the frame 11 can be chamfered or rounded to facilitate assembly guidance and avoid stress concentration.

[0084] In some embodiments of this specification, by providing a first rib structure 111 at the edge of the first opening end face 116 of the frame 11, the direct impact of high-speed water flow on the sealing structure within the joint gap can be blocked, effectively dispersing the kinetic energy of the high-speed water flow and reducing the dynamic load on the sealing structure. Furthermore, the first rib structure 111 can increase the elastic modulus of the frame 11 (such as the first opening end face), significantly improving the bending and torsional resistance of the housing 10. In addition, locally adding the first rib structure 111 instead of overall thickening of the housing 10 can save material costs and meet the lightweight structural requirements of the battery device 1. In short, by providing a first rib structure 111 at the edge of the first opening end face of the frame 11, the synergistic effect of structural reinforcement and material buffering can simultaneously meet multiple requirements such as deformation resistance, impact resistance, sealing performance, and noise reduction.

[0085] Figure 6 This is a schematic diagram of the first rib structure and the drainage channel shown in some embodiments of this specification.

[0086] In some embodiments, such as Figure 6 As shown, a drainage groove 112 is provided on the first rib structure 111.

[0087] The drainage channel 112 is an opening structure formed on the first rib structure 111. The drainage channel 112 is used to drain water accumulated in a part of the battery device 1.

[0088] In some embodiments, multiple drainage channels 112 can be provided, and the multiple drainage channels 112 are distributed circumferentially on the first rib structure 111 along the first opening end face 116. The shape of the drainage channels 112 can be a rectangular channel, an arc channel, or a U-shaped channel, etc., and its size and number can be determined comprehensively according to the actual drainage needs and structural strength requirements. For example, based on the historical water accumulation situation of the box 10, multiple drainage channels 112 can be opened on the first rib structure 111 corresponding to the water accumulation area to ensure unobstructed drainage path.

[0089] In some embodiments, the through direction of the drain trough 112 may be perpendicular to the axis of the frame 11 or at a preset angle (e.g., 30°).

[0090] In some embodiments of this specification, by providing a drainage groove 112 on the first rib structure 111, when condensate or other liquids accumulate at the first joint gap, the liquid can be discharged in a timely manner through the drainage groove 112, preventing the liquid from forming a pool between the first rib structure 111 and adjacent components, thereby effectively preventing corrosion problems caused by long-term liquid retention, while also taking into account the drainage function and shielding and protection function of the shielding structure 110.

[0091] In some embodiments, such as Figure 5 As shown, the shielding structure 110 includes a second rib structure 113, which is disposed at the edge of the second opening end face 117 of the frame 11 and extends axially (e.g., the axial direction of the frame 11) toward the side away from the frame 11.

[0092] The second rib structure 113 is a shielding structure 110 provided on the second opening end face 117 (lower end face) of the frame 11. The second rib structure 113 includes, but is not limited to, vertical ribs, ribs, and other structures.

[0093] In some embodiments, the structure of the second rib structure 113 may be the same as or similar to that of the first rib structure 111. It may also be integrally formed or fixedly connected to the edge of the second opening end face 117 of the frame 11, and extend along the axial direction of the frame 11 to the side away from the frame 11, so as to form a shielding barrier at the other opening end face of the frame 11.

[0094] The second rib structure 113 is similar in structure and arrangement to the first rib structure 111, and will not be described in detail here.

[0095] In some embodiments of this specification, by providing a second rib structure 113 extending axially along the edge of the second opening end face of the frame 11, the direct impact of high-speed water flow on the bottom sealing structure under ground rebound or wading conditions can be effectively blocked. Furthermore, by adding the second rib structure 113, the elastic modulus of the frame 11 (such as the second opening end face) can be increased, significantly improving the compressive strength at the connection between the base plate 13 and the frame 11. Simultaneously, external impact forces or loads can be evenly distributed throughout the entire housing 10, avoiding deformation or cracking caused by localized stress concentration. In addition, the second rib structure 113 forms a sealing barrier between the base plate 13 and the frame 11, effectively preventing rainwater or oil from seeping into the interior of the housing 10, protecting the battery cells 20 inside the housing 10.

[0096] In some embodiments, the edges of the first open end face 116 and the second open end face 117 of the frame 11 may be provided with a first rib structure 111 and a second rib structure 113, respectively, to shield or cover the joint gap between the upper cover 12 and the frame 11, and between the bottom plate 13 and the frame 11.

[0097] In other embodiments, the second rib structure 113 may be provided only at the edge of the second opening end face 117 of the frame 11, while other shielding structures (such as flanges) may be provided at the edge of the top cover 12, so as to shield or cover the joint gap between the top cover 12 and the frame 11, and between the bottom plate 13 and the frame 11.

[0098] Figure 7 This is a schematic diagram of the structure of the top cover according to some embodiments of this specification. Figure 8 yes Figure 2 Another partial cross-section along the AA direction.

[0099] In some embodiments, such as Figures 7-8 As shown, the edge of the upper cover 12 is provided with a flange 121, which bends toward the side closer to the frame 11 along the axial direction of the frame 11.

[0100] The flange 121 refers to a portion of the extended structure of the upper cover 12. In some embodiments, the flange 121 may be a structure formed by stamping, bending or other processes on the edge of the upper cover 12.

[0101] In some embodiments, the flange 121 is formed by bending the edge of the upper cover 12 toward the frame 11, and the bending angle can be set to a right angle or an obtuse angle, etc., according to assembly requirements. For example, the extension direction of the flange 121 can be perpendicular to the upper cover 12 or at a specific angle (e.g., 60°) with the upper cover 12. The extension length of the flange 121 in different regions and the angle between its extension direction and the upper cover 12 can be the same or different.

[0102] In some embodiments, the flange 121 may form a continuous plane or curved surface at the edge of the cover 12 to better fit the installation space of the battery device 1. Compared to an intermittent flange 121 or a rib structure, the flange 121 with a continuous plane or curved surface structure has a larger contact area with the first opening end face 116 of the frame 11, and can distribute compressive stress more evenly when combined with sealing materials (such as foam), thereby improving the sealing effect.

[0103] In some embodiments of this specification, by providing a flange 121 that bends towards the frame 11 at the edge of the top cover 12, the scouring of the sealing structure by high-speed water flow can be directly blocked. While enhancing the bending stiffness of the edge of the top cover 12, the flange 121 can more evenly distribute the compressive stress of the sealing material (such as foam), improve the bending and compressive strength of the top cover 12, and reduce deformation or collapse of the top cover 12 caused by external forces. Moreover, compared with rib structures (such as the first rib structure 111), the flange 121 consumes less additional material and has a lower manufacturing cost.

[0104] Figure 9 yes Figure 2 Enlarged view of point B in the middle.

[0105] In some embodiments, such as Figure 3 , Figure 9 As shown, the enclosure 11 includes multiple side beams 114, and adjacent side beams 114 are connected by connecting plates 115 to form the enclosure 11.

[0106] The frame beams 114 are the main structure of the enclosure 11. In some embodiments, multiple frame beams 114 are connected end to end to form a frame structure with a hollow area. The cross-sectional shape of the frame beams 114 can be rectangular, C-shaped, or other shapes suitable for load-bearing and connection. The cross-section is perpendicular to the length direction of the frame beams 114.

[0107] In some embodiments, the frame beam 114 may be made of extruded aluminum alloy profiles or high-strength steel. The interior of the frame beam 114 may be designed with multiple chambers to ensure a certain level of resistance to side impacts while achieving lightweighting.

[0108] In some embodiments, the edge of the frame beam 114 may be integrally formed or fixedly connected with a first rib structure 111 and / or a second rib structure 113.

[0109] The connecting plate 115 is a connecting structure used to connect two adjacent frame beams 114. The connecting plate 115 may have a specific geometric angle (e.g., arc or bend).

[0110] The connecting plate 115 can connect two adjacent side beams 114 in a variety of ways. For example, the connecting plate 115 can be connected to two adjacent side beams 114 by bolts, mortise and tenon joints, or other components.

[0111] In some embodiments, the connecting plate 115 is welded to two adjacent side beams 114 to improve the overall rigidity of the frame 11 and ensure the sealing and vibration resistance of the box 10.

[0112] In some embodiments of this specification, the modular combination connection of the frame beams 114 and the connecting plate 115 can improve the adaptability of the frame 11 to the installation position (e.g., vehicle chassis, etc.), enhance the connection strength between the frame beams 114 and the overall rigidity of the frame 11.

[0113] Figure 10 yes Figure 2 Another enlarged view of point B in the middle.

[0114] In some embodiments, such as Figures 9-10 As shown, the second rib structure 113 is disposed on at least a portion of the edges of the plurality of side beams 114; the connecting plate 115 and the second joint gap between its connection area with the side beams 114 and the base plate 13 are filled with sealant 118.

[0115] At least a partial edge can be understood as a partial edge or a complete edge. In some embodiments, the second rib structure 113 is divided into multiple segments disposed on the partial edges of different frame beams 114, and there are intervals between the multiple segments. For example, at the connection between the frame beam 114 and the connecting plate 115, the second rib structure 113 needs to be partially interrupted at this point because it is necessary to avoid welds, bolt positions, or meet mold demolding requirements, that is, no second rib structure 113 is provided at this connection.

[0116] Understandably, since the second rib structure 113 is not provided at the connection between the frame beam 114 and the connecting plate 115, or in other words, the second rib structure 113 on the frame beam 114 is only provided in the middle section along its length, and no second rib structure is provided in the part of the frame beam 114 near the aforementioned connection along its length, the sealing structure in the second joint gap between the connecting plate 115 and its connection area with the frame beam 114 and the base plate 13 lacks the physical shielding of the shielding structure 110. Therefore, it is necessary to fill this area with sealant to enhance the sealing performance and resist the impact of high-pressure / high-speed water flow from the outside.

[0117] The connection area refers to the area where the connecting plate 115 and the frame beam 114 physically contact, overlap, or merge.

[0118] Sealants are materials used to fill gaps in structures to prevent moisture from seeping in. For example, sealants can include silicone sealant or polyurethane sealant.

[0119] In some embodiments of this specification, for complex areas such as corners, localized adhesive application can solve the problem of weak protection caused by the breakage of the second rib structure 113 at the connecting plate 115, ensuring the full circumference sealing effect of the enclosure 10. By locally setting the second rib structure 113 at the edge of the frame beam 114, the erosion resistance of the enclosure 10 can be guaranteed while optimizing the lightweight design.

[0120] The beneficial effects that the embodiments of this specification may bring include, but are not limited to: (1) By setting shielding structures at the edges of different opening end faces of the frame, the sealing structure in the joint gap can be shielded or covered in terms of spatial layout, which can block the interference of high pressure fluid erosion. Moreover, the shielding structure can effectively disperse the kinetic energy of high-speed water flow, reduce the dynamic load on the sealing structure and reduce the risk of water hammer effect, and prevent corrosive wear caused by suspended particles in high-speed water flow, so that the battery device can reach the IPX9K protection standard, effectively improving the sealing reliability and service life of the battery device 1 in extreme cleaning environment or water immersion conditions. (2) By setting rib structures (e.g., first rib structure and second rib structure) at the edges of the opening end faces (e.g., the first opening end face and the second opening end face) of the frame, the direct impact of high-speed water flow on the sealing structure in the joint gap can be blocked, effectively dispersing the kinetic energy of high-speed water flow and reducing the dynamic load on the sealing structure. Moreover, the rib structure can also increase the elastic modulus of the frame, significantly improving the bending and torsional resistance of the box. In addition, the addition of rib structures locally rather than the overall thickening of the box can save material costs and meet the structural lightweight requirements of the battery device. (3) By setting a flange that bends towards the frame at the edge of the top cover, the scouring of the sealing structure by high-speed water flow can be directly blocked. While enhancing the bending stiffness of the top cover edge, the flange can more evenly distribute the compressive stress of the sealing material (such as foam), improve the bending and compressive strength of the top cover, and reduce the deformation or collapse of the top cover caused by external forces. Moreover, compared with the rib structure, the flange consumes less additional material and has a lower manufacturing cost. (4) For complex areas such as corners, the problem of weak protection caused by the breakage of the second rib structure at the connecting plate can be solved by local glue filling, ensuring the full circumference sealing effect of the box. By setting a second rib structure locally at the edge of the frame beam, the lightweight design can be optimized while ensuring the anti-scouring effect of the box.

[0121] It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the beneficial effects may be any one or a combination of the above, or any other possible beneficial effects.

[0122] It should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments described herein. Other variations may also fall within the scope of this specification. Therefore, alternative configurations of the embodiments described herein are intended to be consistent with the teachings of this specification, rather than as examples or limitations. Accordingly, the embodiments described herein are not limited to those explicitly introduced and described herein.

[0123] This specification uses specific terms to describe embodiments thereof. Terms such as "an embodiment," "an embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that references to "some embodiments," "an embodiment," or "an alternative embodiment" in different locations throughout this specification do not necessarily refer to the same embodiment. Furthermore, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined.

[0124] Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments described herein. Other variations may also fall within the scope of this specification. Therefore, alternative configurations of the embodiments described herein are intended to be illustrative rather than limiting, and should be considered consistent with the teachings of this specification. Accordingly, the embodiments described herein are not limited to those explicitly introduced and described herein.

Claims

1. A battery device, characterized by, The device includes a housing and individual battery cells. The housing includes a frame, a top cover, and a bottom plate. The frame has a first open end face and a second open end face that are spaced apart along the axial direction. The top cover and the bottom plate respectively cover the first open end face and the second open end face to form a receiving cavity. The individual battery cells are disposed in the receiving cavity. The upper cover has a first engagement gap with the first opening end face, and the bottom plate has a second engagement gap with the second opening end face; The frame is provided with a shielding structure, the orthographic projection of which covers at least a portion of the orthographic projection of the first joint gap on the plane parallel to the axial direction, and / or covers at least a portion of the orthographic projection of the second joint gap on the plane.

2. The battery device of claim 1, wherein The shielding structure includes a first rib structure, which is disposed at the edge of the first opening end face of the frame and extends along the axial direction away from the frame.

3. The battery device of claim 2, wherein A drainage groove is provided on the first rib structure.

4. The battery device of claim 1, wherein The shielding structure includes a second rib structure, which is disposed at the edge of the second opening end face of the frame and extends along the axial direction away from the frame.

5. The battery device of claim 4, wherein The edge of the top cover is provided with a flange, which bends toward the side of the top cover along the axis toward the frame.

6. The battery device of claim 4, wherein The enclosure includes multiple side beams, and adjacent side beams are connected by connecting plates to form the enclosure.

7. The battery device of claim 6, wherein The second rib structure is disposed at least on a portion of the edges of the plurality of frame beams; The second joint gap between the connecting plate and its connection area with the frame beam and the base plate is filled with sealant.

8. The battery device according to any one of claims 1 to 7, wherein A sealing structure is provided in the first joint gap and the second joint gap.

9. The battery device of claim 1, wherein The shielding structure and the surrounding frame are integrally formed.

10. An electrical device, characterized by Includes the battery device as described in any one of claims 1 to 9, wherein the battery device serves as a power source for the electrical device and / or an energy storage unit for the electrical device.

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