Battery device and electric device

Abstract

The utility model relates to a battery device and a power utilization device, the battery device comprises an upper cover, the upper cover comprises a top plate and a plurality of first side plates, the plurality of first side plates surround the periphery of the top plate to jointly form a hollow structure with an opening at one end, and a first groove extending along the length direction is formed in the top plate; and the reinforcing beam is arranged in the first groove. The battery device and the power utilization device provided by the embodiment of the utility model have the advantage of good protection capability.

Description

Technical Field

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

[0002] In electric vehicles, the battery system is one of the key systems, and its safety performance directly affects the overall safety of the vehicle. The battery pack is the core component of the battery system, and the cover of the battery pack, as the carrier of the individual battery cells, plays a crucial role in protecting the batteries.

[0003] In related technologies, the top cover of the battery device has poor protection capabilities during use, which reduces the user experience. Utility Model Content

[0004] Therefore, it is necessary to provide a battery device and a power supply device to address the problem of poor protection capabilities.

[0005] A first aspect of this application provides a battery device, comprising: a top cover, the top cover including a top plate and a plurality of first side plates, the plurality of first side plates surrounding the periphery of the top plate to collectively form a hollow structure with one end open, the top plate forming a first groove extending along the length direction; and a reinforcing beam disposed in the first groove.

[0006] In one embodiment, the battery device further includes a housing body and a battery cell; the top cover is fitted onto the housing body with an opening facing the housing body, and the two together define an accommodating space; the battery cell is disposed in the accommodating space; the surface of the top plate opposite to the accommodating space is recessed inward to form the first groove.

[0007] In one embodiment, the top cover further includes a mounting edge; the mounting edge is located on the side of the first side plate away from the top plate; the mounting edge is bolted to the box body.

[0008] In one embodiment, the top plate, the first side plate, and the mounting edge are integrally formed.

[0009] In one embodiment, the battery device further includes a first sealing gasket sandwiched between the mounting edge and the housing body.

[0010] In one embodiment, a first gap is formed between the groove wall of the first groove and the reinforcing beam; and / or, the groove depth of the first groove is greater than or equal to the height of the reinforcing beam.

[0011] In one embodiment, the length of the top cover along the length direction is greater than or equal to the length of the reinforcing beam along the length direction.

[0012] In one embodiment, the reinforcing beam is provided with a plurality of mounting holes arranged along the length direction; the top plate is provided with a plurality of through holes corresponding to the mounting holes.

[0013] In one embodiment, the top cover is made of steel, plastic or composite material; and / or, the reinforcing beam is made of steel or aluminum profile; and / or, the reinforcing beam has a T-shaped or I-shaped cross-section.

[0014] In one embodiment, the upper cover and the reinforcing beam are connected by bolts or welding; or, the upper cover and the reinforcing beam are integrally formed.

[0015] In one embodiment, the top plate is formed with a plurality of second grooves extending along the width direction; the width direction is intersecting the length direction; and a plurality of second grooves arranged at intervals along the length direction are respectively provided on both sides of the first groove along the width direction.

[0016] In one embodiment, a plurality of third grooves extending along the height direction are formed on the first side plate; the width direction, the length direction and the height direction are arranged to intersect each other; the second groove and the third groove are arranged in a one-to-one correspondence.

[0017] In one embodiment, at least one second groove communicates with a corresponding third groove to form a first reinforcing structure; in the first reinforcing structure, the end of the second groove away from the third groove is connected to the first groove.

[0018] In one embodiment, at least one of the third grooves is spaced apart from the corresponding second groove to form a second reinforcing structure; in the second reinforcing structure, the end of the second groove away from the third groove is spaced apart from the first groove.

[0019] In one embodiment, the first reinforcing structure and the second reinforcing structure are alternately arranged along the length direction.

[0020] In one embodiment, the battery device further includes a second sealing gasket sandwiched between the reinforcing beam and the first groove.

[0021] A second aspect of this application provides an electrical device, including the battery device described above.

[0022] The beneficial effects are:

[0023] The battery device of this application embodiment has a first groove extending along the length direction on the top plate. The first groove has a certain depth and width. A reinforcing beam is placed in the first groove to achieve relative fixation between the top cover and the reinforcing beam. Since the reinforcing beam has good hardness and structural rigidity, it can effectively adjust the resonance frequency of the top cover and the battery device, and ensure that the top cover has better bending and torsional rigidity. At the same time, the reinforcing beam can act as an energy-absorbing component, effectively enhancing the compression and impact resistance of the top cover and the battery device along the length direction, ultimately greatly improving the protection effect, reducing the failure probability of the battery device, and improving the user experience.

[0024] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0025] Figure 1 The diagram shows the structural features of a vehicle provided in some embodiments of this application.

[0026] Figure 2 This is an exploded structural diagram of a battery provided in some embodiments of this application.

[0027] Figure 3 This is a schematic diagram of the structure of a battery module provided in some embodiments of this application.

[0028] Figure 4 This is an exploded structural diagram of a battery cell provided in some embodiments of this application.

[0029] Figure 5 This is a schematic diagram of the assembly of the top cover and the reinforcing beam provided for some embodiments of this application.

[0030] Figure 6 for Figure 5 Enlarged view of region A of the structure shown.

[0031] Figure 7 for Figure 5 Enlarged view of region B of the structure shown.

[0032] Figure 8 for Figure 5 Enlarged view of region C of the structure shown.

[0033] Figure 9 for Figure 5 Enlarged view of region D of the structure shown.

[0034] Figure 10 This is a top view of the assembly of the top cover and the reinforcing beam provided for some embodiments of this application.

[0035] Figure 11 for Figure 10 The EE cross-sectional view of the structure shown.

[0036] Figure 12 This is a structural schematic diagram of a reinforcing beam provided for some embodiments of this application. Detailed Implementation

[0037] 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.

[0038] 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.

[0039] In the description of the embodiments of this application, if the technical terms such as "first" and "second" appear, these terms are used only for descriptive purposes to distinguish different objects, and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0040] 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.

[0041] 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.

[0042] In the description of the embodiments of this application, if the term "multiple" appears, "multiple" means at least two (including two), such as two, three, etc., unless otherwise explicitly specified. Similarly, if the term "multiple sets" appears, "multiple sets" refers to two or more sets (including two sets), and if the term "multiple pieces" appears, "multiple pieces" refers to two or more pieces (including two pieces).

[0043] In the description of the embodiments of this application, if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0044] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0047] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0048] In related technologies, the battery pack cover, as an important component of the battery pack in electric vehicles or energy storage systems, forms a closed space together with the casing to protect the internal battery cells, battery modules, and other electrical components. While meeting basic sealing and protection requirements such as IPX8, the battery pack cover also needs sufficient mechanical strength; however, during the manufacturing process, battery pack covers are mostly made of metal, or a combination of composite materials and metal plates, resulting in poor protective capabilities and reduced user experience.

[0049] To alleviate the problem of poor protection of the battery pack's top cover, a reinforcing beam can be designed into the top cover. Because the reinforcing beam has good hardness and structural rigidity, it can effectively adjust the resonance frequency of the top cover and the battery pack, and ensure that the top cover has better bending and torsional rigidity. At the same time, the reinforcing beam can also act as an energy-absorbing component, effectively enhancing the compression and impact resistance of the top cover and the battery pack, ultimately greatly improving the protection effect, reducing the probability of battery pack failure, and improving the user experience.

[0050] This application provides a battery device and an electrical device, which can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, energy storage products, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc. Energy storage products can include energy storage stations, etc.

[0051] It should be understood that the technical solutions described in the embodiments of this application are not limited to the batteries and electrical devices described above, but can also be applied to all batteries including housings and electrical devices using batteries. However, for the sake of brevity, an embodiment of this application using a vehicle 1000 as an example will be used for illustration.

[0052] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0053] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0054] Figure 2 Exploded views of the battery device 100 provided in some embodiments of this application; Figure 3 This is a schematic diagram of the structure of a battery module provided in some embodiments of this application. Please refer to... Figure 2 and Figure 3 To meet different power demands, the battery device 100 may include multiple battery cells 121 and a housing 110. A battery cell 121 is the smallest unit that makes up the battery module 120 or battery pack. Multiple battery cells 121 may be connected in series and / or in parallel via electrode terminals for various applications. The battery device 100 mentioned in this application is a battery pack.

[0055] The housing 110 is used to house the battery cell 121 or battery module 120 to prevent liquids or other foreign objects from affecting the charging or discharging of the battery cell 121.

[0056] The housing 110 can adopt various structures. In some embodiments, the housing 110 may include a top cover 111 and a housing body 112, with the top cover 111 and the housing body 112 overlapping each other, and the top cover 111 and the housing body 112 together defining a receiving space for accommodating the battery cell 121. The top cover 111 and the housing body 112 may both be hollow structures with an opening on one side, with the opening side of the top cover 111 covering the opening side of the housing body 112. Of course, the housing 110 formed by the top cover 111 and the housing body 112 can be of various shapes, such as a simple three-dimensional structure such as a cuboid, cylinder, or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders, or spheres. The embodiments of this application are not limited in this regard. The material of the housing 110 may be an alloy material such as aluminum alloy or iron alloy, or a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin. The embodiments of this application are also not limited in this regard.

[0057] In the embodiments of this application, multiple battery cells 121 can be directly assembled into a battery pack, or they can first be assembled into a battery module 120, and then the battery modules 120 can be assembled into a battery pack. Specifically, multiple battery cells 121 can be directly connected in series, in parallel, or in a mixed manner to form a whole, and then the whole composed of multiple battery cells 121 can be housed in a housing 110. Alternatively, multiple battery cells 121 can first be connected in series, in parallel, or in a mixed manner to form a battery module 120, and then multiple battery modules 120 can be connected in series, in parallel, or in a mixed manner to form a whole, and housed in a housing 110.

[0058] The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar for realizing electrical connection between multiple battery cells 121.

[0059] Each battery cell 121 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 121 can be cylindrical, flat, cuboid, or other shapes. Battery cells 121 are generally classified into three types according to their packaging method: cylindrical battery cells, cuboid battery cells, and pouch battery cells; the embodiments of this application are not limited to these. However, for the sake of brevity, the following embodiments will use a cuboid lithium-ion battery cell 121 as an example for description.

[0060] Please refer to Figure 4 , Figure 4 This is an exploded structural diagram of a battery cell 121 provided in some embodiments of this application. The battery cell 121 includes an end cap 122, a housing 123, an electrode assembly 124, and other functional components.

[0061] End cap 122 refers to a component that covers the opening of housing 123 to isolate the internal environment of electrode assembly 124 from the external environment. The shape of end cap 122 can be adapted to the shape of housing 123 to fit it. Optionally, end cap 122 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 122 is less prone to deformation under pressure and impact, allowing the battery cell 121 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 125 can be provided on end cap 122. Electrode terminals 125 can be used for electrical connection with electrode assembly 124 to output or input electrical energy to battery cell 121. In some embodiments, end cap 122 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 121 reaches a threshold. The material of end cap 122 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 122. The insulating element can be used to isolate the electrical connection components within the housing 123 from the end cap 122 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0062] The housing 123 is an assembly used to cooperate with the end cap 122 to form the internal environment of the battery cell 121, wherein the formed internal environment can accommodate the electrode assembly 124, electrolyte, and other components. The housing 123 and the end cap 122 can be independent components. An opening can be provided on the housing 123, and the end cap 122 closes the opening to form the internal environment of the battery cell 121. Alternatively, the end cap 122 and the housing 123 can be integrated. Specifically, the end cap 122 and the housing 123 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 123, the end cap 122 closes the housing 123. The housing 123 can have various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 123 can be determined according to the specific shape and size of the electrode assembly 124. The shell 123 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special restrictions on this.

[0063] Electrode assembly 124 is the component in the battery cell 121 where electrochemical reactions occur. The housing 123 may contain one or more electrode assemblies 124. Electrode assembly 124 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of electrode assembly 124, while the portions of the positive and negative electrode sheets without active material each constitute a tab (not shown). The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals 125 to form a current loop.

[0064] Figure 5 This is a schematic diagram of the assembly of the top cover and the reinforcing beam provided for some embodiments of this application. Figure 6 for Figure 5 Enlarged view of region A of the structure shown. Figure 7 for Figure 5 Enlarged view of region B of the structure shown. Figure 8 for Figure 5 Enlarged view of region C of the structure shown. Figure 9 for Figure 5 Enlarged view of region D of the structure shown. Figure 10 This is a top view of the assembly of the top cover and the reinforcing beam provided for some embodiments of this application. Figure 11 for Figure 10 The EE cross-sectional view of the structure shown. Figure 12 This is a structural schematic diagram of a reinforcing beam provided for some embodiments of this application.

[0065] See Figures 1 to 12 As shown, the first aspect of this application provides a battery device 100, including a top cover 111 and a reinforcing beam 130.

[0066] The upper cover 111 includes a top plate 1111 and a plurality of first side plates 1112. The plurality of first side plates 1112 surround the periphery of the top plate 1111 to form a hollow structure with one end open. The top plate 1111 has a first groove 1114 extending along the length direction X. A reinforcing beam 130 is disposed in the first groove 1114.

[0067] By providing a first groove 1114 extending along the length direction X on the top plate 1111, the first groove 1114 having a certain depth and width, and placing the reinforcing beam 130 in the first groove 1114, the upper cover 111 and the reinforcing beam 130 are relatively fixed. Since the reinforcing beam 130 has good hardness and structural rigidity, it can effectively adjust the resonance frequency of the upper cover 111 and the battery device 100, and ensure that the upper cover 111 has better bending and torsional rigidity. At the same time, the reinforcing beam 130 can act as an energy-absorbing component, effectively enhancing the compression and impact resistance of the upper cover 111 and the battery device 100 along the length direction X, ultimately greatly improving the protection effect, reducing the failure probability of the battery device 100, and improving the user experience.

[0068] Alternatively, the cover 111 may be made of steel, plastic or composite materials.

[0069] Optionally, the reinforcing beam 130 is made of steel or aluminum profile; the cross-section of the reinforcing beam 130 is T-shaped or I-shaped. In this way, the reinforcing beam 130 has good hardness and structural rigidity, which can effectively ensure that the cover 111 has better bending and torsional rigidity.

[0070] Optionally, the upper cover 111 and the reinforcing beam 130 are connected by bolts or welding to achieve relative fixation between the upper cover 111 and the reinforcing beam 130.

[0071] In some embodiments of this application, for ease of explanation, the width direction Y, the length direction X, and the height direction Z are defined, and the width direction Y, the length direction X, and the height direction Z are arranged to intersect each other. Here, the arrangement of intersecting each other includes the arrangement of perpendicularly intersecting each other.

[0072] To facilitate understanding of the embodiments of this application, in Figures 1 to 12 In the illustrated embodiment, the example is given where the width direction Y, length direction X, and height direction Z intersect each other perpendicularly. However, those skilled in the art should understand that the embodiments of this application are not limited to the case where these three directions intersect each other perpendicularly. In a specific embodiment, the length direction X can be parallel to the top plate 1111, the width direction Y can be parallel to the top plate 1111 and the length direction X, and the height direction Z can be perpendicular to the top plate 1111.

[0073] For ease of explanation, such as Figures 1 to 12 As shown by the arrows, the direction of arrow X is the length direction, the direction of arrow Y is the width direction, and the direction of arrow Z is the height direction. Sometimes, the direction that arrow Z points along the height direction is called "above," and its opposite direction is called "below"; the height direction also refers to the top and bottom direction.

[0074] In some possible embodiments, see Figures 1 to 12 As shown, the battery device 100 also includes a housing body 112 and a battery cell 121.

[0075] The top cover 111 is closed onto the box body 112 with its opening facing the box body 112, and the two together define an accommodating space (not shown); the battery cell 121 is disposed in the accommodating space; the surface of the top plate 1111 facing away from the accommodating space is recessed inward to form a first groove 1114.

[0076] By covering the top cover 111 onto the box body 112 to jointly define the accommodating space and placing the battery cell 121 within the accommodating space, the integrated packaging structure of the battery device 100 is realized, effectively ensuring the protective sealing of the battery cell 121.

[0077] The top plate 1111 has a recessed first groove 1114 on the side of the top plate facing away from the accommodating space. This can optimize the structural layout. The first groove 1114 can provide an assembly base for the reinforcing beam 130. The cooperation between the first groove 1114 and the reinforcing beam 130 can significantly improve the bending and torsional resistance of the top cover 111 in the length direction X, suppress vibration response, effectively disperse stress during external compression or collision, and reduce the risk of deformation of the housing 110, thereby comprehensively improving the safety, reliability and service life of the battery device 100.

[0078] In some possible embodiments, see Figures 1 to 12 As shown, the top cover 111 also includes a mounting edge 1113; the mounting edge 1113 is located on the side of the first side plate 1112 away from the top plate 1111; the mounting edge 1113 is bolted to the box body 112.

[0079] By providing an installation edge 1113 on the side of the first side plate 1112 away from the top plate 1111, sufficient arrangement space and structural foundation can be provided for bolt connection, ensuring the connection rigidity and bonding strength between the top cover 111 and the box body 112, thereby ensuring that the box body 110 can effectively resist the vibration and impact generated during vehicle operation.

[0080] The mounting edge 1113 is bolted to the housing body 112, which facilitates assembly and maintenance, thereby further improving the structural stability and environmental protection capabilities of the battery device 100.

[0081] In some possible embodiments, see Figures 1 to 12 As shown, the top plate 1111, the first side plate 1112, and the mounting edge 1113 are integrally formed structures.

[0082] Specifically, the top cover 111 can be formed directly and integrally by metal stamping or plastic injection molding, which can facilitate the rapid formation of the overall structure of the top cover 111.

[0083] In some possible embodiments, see Figures 1 to 12 As shown, the battery device 100 also includes a first sealing gasket (not shown), which is sandwiched between the mounting edge 1113 and the housing body 112.

[0084] The mounting edge 1113 and the box body 112 can be connected by bolts, and the first sealing gasket is sandwiched between the mounting edge 1113 and the box body 112, which ensures the controllability and consistency of the connection between the top cover 111 and the box body 112, helps to maintain the overall sealing integrity of the box 110, prevents external liquids or pollutants from entering the containment space, and further improves the structural stability and environmental protection capabilities of the battery device 100.

[0085] Alternatively, the first sealing gasket may be a rubber gasket or a sealing structural adhesive.

[0086] In some possible embodiments, see Figures 1 to 12 As shown, a first gap 1116 is formed between the groove wall of the first groove 1114 and the reinforcing beam 130.

[0087] The top cover 111 closes onto the box body 112, and the battery cell 121 is placed in the receiving space to form the battery device 100; a first gap 1116 is formed between the groove wall of the first groove 1114 and the reinforcing beam 130. The first gap 1116 can serve as a passage space for external wire harnesses, improving space utilization, facilitating installation and maintenance, and effectively improving the space utilization efficiency of the battery device 100.

[0088] In some possible embodiments, see Figures 1 to 12 As shown, the groove depth of the first groove 1114 is greater than or equal to the height of the reinforcing beam 130.

[0089] The first groove 1114 is designed with a certain depth and width. For example, the cross-section of the first groove 1114 can be a square groove with a height of 50mm and a width of 70mm.

[0090] The first groove 1114 is used to accommodate the reinforcing beam 130. By setting the groove depth of the first groove 1114 to be greater than or equal to the height of the reinforcing beam 130, it is ensured that the reinforcing beam 130 can be completely or almost completely accommodated in the internal space of the first groove 1114. This ensures that the upper surface of the reinforcing beam 130 will not protrude from the outline of the top plate 1111, or even if it does protrude, the height will be extremely limited. This ensures the overall flatness of the outer surface of the top cover 111 of the battery device 100, effectively optimizes the spatial layout, and avoids unnecessary spatial interference with the external structure.

[0091] In some possible embodiments, see Figures 1 to 12 As shown, the length of the upper cover 111 along the length direction X is greater than or equal to the length of the reinforcing beam 130 along the length direction X.

[0092] In this way, it can be ensured that the reinforcing beam 130 can completely cover and support the main stress area of ​​the cover 111 in the length direction X, thereby ensuring that the cover 111 has better bending and torsional stiffness. This ensures that longitudinal compression or collision loads from the outside can be evenly transmitted and dissipated through the reinforcing beam 130, avoiding local stress concentration caused by insufficient length of the reinforcing beam 130. Ultimately, this greatly improves the protection effect, reduces the failure probability of the battery device 100, and improves the user experience.

[0093] In some possible embodiments, see Figures 1 to 12 As shown, the reinforcing beam 130 is provided with a plurality of mounting holes 131 arranged along the length direction; the top plate 1111 is provided with a plurality of through holes (not shown) corresponding to the mounting holes 131.

[0094] The mounting holes 131 all penetrate along the height direction Z perpendicular to the top plate 1111; thus, when the top cover 111 is fastened to the box body 112, bolts can be passed through the mounting holes 131 and through holes to connect the reinforcing beam 130 to the top plate 1111.

[0095] In some possible embodiments, see Figures 1 to 12 As shown, the top cover 111 and the reinforcing beam 130 adopt an integral molding structure.

[0096] Both the top cover 111 and the reinforcing beam 130 can be made of steel. By adopting an integral molding structure for the top cover 111 and the reinforcing beam 130, the overall structure of the top cover 111 can be quickly formed.

[0097] In some possible embodiments, see Figures 1 to 12 As shown, the top plate 1111 has a plurality of second grooves 1115 extending along the width direction Y; the width direction Y is intersected with the length direction X; the first groove 1114 has a plurality of second grooves 1115 arranged at intervals along the length direction X on both sides along the width direction Y.

[0098] The top plate 1111 has its side surface facing away from the receiving space recessed inward to form a second groove 1115. All the second grooves 1115 extend along the width direction Y. Multiple second grooves 1115 are arranged at intervals along the length direction X to form a third reinforcing structure (not shown). Two sets of third reinforcing structures are respectively set on both sides of the first groove 1114 along the width direction Y.

[0099] By forming multiple second grooves 1115 extending along the width direction Y in the top plate 1111, with the width direction Y intersecting the length direction X, the second grooves 1115 and the first groove 1114 together form a crisscrossing reinforcing rib network; combined with the reinforcing beam 130 set in the first groove 1114, the resonance frequency of the top cover 111 and the battery device 100 is effectively adjusted, and the top cover 111 has better bending and torsional stiffness; ultimately, the protective effect is greatly improved, the failure probability of the battery device 100 is reduced, and the user experience is improved.

[0100] In some possible embodiments, see Figures 1 to 12 As shown, a plurality of third grooves 1117 extending along the height direction Z are formed on the first side plate 1112; the width direction Y, the length direction X and the height direction Z are arranged to intersect each other; the second groove 1115 and the third groove 1117 are arranged in a one-to-one correspondence.

[0101] Specifically, a plurality of third grooves 1117 extending along the height direction Z are formed on the first side plates 1112 on both sides of the top plate 1111 along the width direction Y; the surface of the first side plate 1112 facing away from the receiving space is recessed inward to form the third grooves 1117, and all the third grooves 1117 extend along the height direction Z.

[0102] By forming multiple third grooves 1117 extending along the height direction Z on the first side plate 1112, the third grooves 1117, the second grooves 1115, and the first grooves 1114 together form a three-dimensional interlaced reinforcing rib network; combined with the reinforcing beams 130 set in the first grooves 1114, the resonance frequency of the top cover 111 and the battery device 100 is effectively adjusted, and the top cover 111 has better bending and torsional stiffness, which can effectively resist complex loads and torsional deformation from different directions, ultimately greatly improving the protection effect, reducing the failure probability of the battery device 100, and improving the user experience.

[0103] In some possible embodiments, see Figures 1 to 12 As shown, at least one second groove 1115 is connected to a corresponding third groove 1117 to form a first reinforcing structure; in the first reinforcing structure, the end of the second groove 1115 away from the third groove 1117 is connected to the first groove 1114.

[0104] Thus, by setting the second groove 1115 to connect with the corresponding third groove 1117, a continuous and through first reinforcing structure is formed extending from the top plate 1111 to the first side plate 1112. This structure then spans the top plate 1111 and the first side plate 1112 to form an integrated three-dimensional reinforcing rib. Combined with the reinforcing beam 130 set in the first groove 1114, the resonance frequency of the top cover 111 and the battery device 100 is effectively adjusted, and the top cover 111 has better bending and torsional stiffness. Ultimately, this greatly improves the protective effect, reduces the failure probability of the battery device 100, and enhances the user experience.

[0105] In some possible embodiments, see Figures 1 to 12 As shown, at least one third groove 1117 is separated from the corresponding second groove 1115 to form a second reinforcing structure; in the second reinforcing structure, the end of the second groove 1115 away from the third groove 1117 is separated from the first groove 1114.

[0106] By setting at least one third groove 1117 to be separated from the corresponding second groove 1115, an independent second reinforcing structure is formed. In this second reinforcing structure, the end of the second groove 1115 away from the third groove 1117 is also separated from the first groove 1114, thereby forming a series of non-continuous, locally high-strength reinforced areas on the top cover 111. This effectively limits and disperses the impact of external loads in these local areas, preventing stress from being transmitted without restriction throughout the structure. This ensures that the top cover 111 has better bending and torsional stiffness, effectively resisting complex loads and torsional deformations from different directions. Ultimately, this greatly improves the protective effect, reduces the failure probability of the battery device 100, and enhances the user experience.

[0107] In some possible embodiments, see Figures 1 to 12 As shown, the first and second reinforcing structures are alternately arranged along the length direction X.

[0108] By alternately setting the first and second reinforcing structures along the length direction X, the characteristics of the first and second reinforcing structures are comprehensively utilized. On the one hand, the continuous and penetrating first reinforcing structure extending from the top plate 1111 to the first side plate 1112 can form an integrated three-dimensional reinforcing rib across the top plate 1111 and the first side plate 1112. On the other hand, the second reinforcing structure forms a series of non-continuous, locally high-strength reinforced areas on the top cover 111, which can effectively limit and disperse the impact of external loads in these local areas, preventing stress from being transmitted indefinitely throughout the structure. Combined with the reinforcing beam 130 set in the first groove 1114, the resonance frequency of the top cover 111 and the battery device 100 is effectively adjusted, and the top cover 111 has better bending and torsional stiffness. Ultimately, the protective effect is greatly improved, the failure probability of the battery device 100 is reduced, and the user experience is improved.

[0109] In some possible embodiments, see Figures 1 to 12 As shown, the battery device 100 also includes a second sealing gasket (not shown), which is sandwiched between the reinforcing beam 130 and the first groove 1114.

[0110] The reinforcing beam 130 and the first groove 1114 can be connected by bolts, and the second sealing gasket is sandwiched between the reinforcing beam 130 and the first groove 1114. The second sealing gasket can effectively fill the assembly interface between the reinforcing beam 130 and the first groove 1114, preventing external moisture, dust and other corrosive media from entering the interior of the housing 110 from the interface. This ensures the controllability and consistency of the connection between the top cover 111 and the reinforcing beam 130, helps maintain the overall sealing integrity of the housing 110, and prevents external liquids or pollutants from entering the containment space, thereby further improving the structural stability and environmental protection capabilities of the battery device 100.

[0111] A second aspect of this application provides an electrical device including the battery device 100 described above, the battery device 100 being used to provide electrical energy.

[0112] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0113] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery device, characterized in that, The battery device includes: The top cover (111) includes a top plate (1111) and a plurality of first side plates (1112), the plurality of first side plates (1112) surrounding the periphery of the top plate (1111) to form a hollow structure with one end open, the top plate (1111) having a first groove (1114) extending along the length direction (X). And a reinforcing beam (130) is provided in the first groove (1114).

2. The battery device according to claim 1, characterized in that, The battery device also includes a housing (112) and a battery cell (121). The top cover (111) is closed onto the box body (112) with its opening facing the box body (112), and the two together define the accommodating space; The battery cell (121) is disposed in the accommodating space; The top plate (1111) has its side surface facing away from the receiving space recessed inward to form the first groove (1114).

3. The battery device according to claim 2, characterized in that, The top cover (111) also includes a mounting edge (1113); the mounting edge (1113) is located on the side of the first side plate (1112) away from the top plate (1111); the mounting edge (1113) is bolted to the box body (112).

4. The battery device according to claim 3, characterized in that, The top plate (1111), the first side plate (1112), and the mounting edge (1113) are integrally formed structures.

5. The battery device according to claim 3, characterized in that, The battery device also includes a first sealing gasket, which is sandwiched between the mounting edge (1113) and the housing body (112).

6. The battery device according to any one of claims 1 to 5, characterized in that, A first gap (1116) is formed between the groove wall of the first groove (1114) and the reinforcing beam (130); and / or, The groove depth of the first groove (1114) is greater than or equal to the height of the reinforcing beam (130).

7. The battery device according to any one of claims 1 to 5, characterized in that, The length of the upper cover (111) along the length direction (X) is greater than or equal to the length of the reinforcing beam (130) along the length direction (X).

8. The battery device according to any one of claims 1 to 5, characterized in that, The reinforcing beam (130) is provided with a plurality of mounting holes (131) arranged along the length direction. The top plate (1111) is provided with a plurality of through holes corresponding to the mounting holes (131).

9. The battery device according to any one of claims 1 to 5, characterized in that, The upper cover (111) is made of steel, plastic, or composite material; and / or, The reinforcing beam (130) is made of steel or aluminum profile; and / or, The cross-section of the reinforcing beam (130) is T-shaped or I-shaped.

10. The battery device according to any one of claims 1 to 5, characterized in that, The upper cover (111) and the reinforcing beam (130) are connected by bolts or welding; or, The upper cover (111) and the reinforcing beam (130) adopt an integral molding structure.

11. The battery device according to any one of claims 1 to 5, characterized in that, The top plate (1111) has a plurality of second grooves (1115) extending along the width direction (Y); the width direction (Y) is intersecting the length direction (X); The first groove (1114) has multiple second grooves (1115) arranged at intervals along the length direction (X) on both sides along the width direction (Y).

12. The battery device according to claim 11, characterized in that, The first side plate (1112) has a plurality of third grooves (1117) extending along the height direction (Z). The width direction (Y), the length direction (X), and the height direction (Z) are arranged in pairs; The second groove (1115) and the third groove (1117) are provided in a one-to-one correspondence.

13. The battery device according to claim 12, characterized in that, At least one second groove (1115) communicates with the corresponding third groove (1117) to form a first reinforcing structure; In the first reinforcing structure, the end of the second groove (1115) away from the third groove (1117) is connected to the first groove (1114).

14. The battery device according to claim 13, characterized in that, At least one of the third grooves (1117) is spaced apart from the corresponding second groove (1115) to form a second reinforcing structure; In the second reinforcing structure, the end of the second groove (1115) away from the third groove (1117) is separated from the first groove (1114).

15. The battery device according to claim 14, characterized in that, The first reinforcing structure and the second reinforcing structure are alternately arranged along the length direction (X).

16. The battery device according to any one of claims 1 to 5, characterized in that, The battery device also includes a second sealing gasket, which is sandwiched between the reinforcing beam (130) and the first groove (1114).

17. An electrical device, characterized in that, Includes the battery device as described in any one of claims 1 to 16.

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