Battery devices and electrical appliances

Abstract

This application discloses a battery device and a power-consuming device. The battery device includes: a housing, comprising a first housing and a second housing, which overlap and jointly define a receiving cavity. The first housing has a first flange extending outward from the receiving cavity, and the second housing has a second flange extending outward from the receiving cavity; a high-voltage box, disposed on the side of the first housing opposite to the second housing and fixed to one end of the first housing along its length; and a bracket, disposed on the side of the housing near the high-voltage box along its length and extending along the height of the housing. A relief groove is formed on the outer periphery of the second flange, recessed towards the receiving cavity. At least a portion of one end of the bracket is disposed within the relief groove and connected to the first flange, while the other end of the bracket is fixed to the second housing. The battery device provided by this application can reduce the risk of plastic deformation or even breakage of the housing.

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] To facilitate efficient use of battery volume and replacement of vulnerable components, the high-voltage box and control system are currently often integrated and externally mounted on the rear side of the battery pack, under the rear seats of the vehicle. However, since integrated high-voltage boxes are typically quite heavy, and considering seat layout, they are usually horizontally placed rectangular structures, relying primarily on the structure of the battery pack cover for support. This results in increased localized stress loads and excessive stiffness in the rear cover, leading to torsional stress concentration at the connection between the high-voltage box and the cover, ultimately causing plastic deformation or even breakage of the box. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a battery device that can reduce the risk of plastic deformation and cracking of the casing.

[0004] This application also proposes an electrical device having the above-mentioned battery device.

[0005] In a first aspect, embodiments of this application provide a battery device, comprising: a housing, the housing comprising: a first housing and a second housing, the first housing and the second housing overlapping each other and jointly defining a receiving cavity, the first housing having a first flange extending outward from the receiving cavity, the second housing having a second flange extending outward from the receiving cavity, the first flange and the second flange being arranged opposite to each other in the height direction of the housing; a high-voltage box, the high-voltage box being arranged on the side of the first housing away from the second housing and fixed at one end of the first housing in the length direction of the housing; a bracket, the bracket being arranged on the side of the housing close to the high-voltage box in the length direction of the housing and extending along the height direction of the housing, the outer periphery of the second flange having a relief groove recessed toward the receiving cavity, at least a portion of one end of the bracket being arranged in the relief groove and connected to the first flange, and the other end of the bracket being fixed to the second housing.

[0006] In the above technical solution, by setting up a bracket, the transmission path of the force acting on the first housing and transmitted to the periphery of the high voltage box can be increased, thereby reducing the stress concentration of the first housing at the periphery of the high voltage box and increasing the stress load in this area. This can improve the deformation resistance of the entire first housing, reduce the risk of plastic deformation or even cracking of the housing, and thus improve the reliability of the battery device.

[0007] In some embodiments, a mounting element is provided on the first flange portion, and one end of the bracket is connected to the first flange portion via the mounting element.

[0008] In the above technical solution, by providing a mounting component on the first flange and connecting one end of the bracket to the first flange via the mounting component, the stress concentration at the connection point between the high voltage box and the first housing and its surrounding area can be reduced, thereby increasing the stress load in this area and improving the deformation resistance of the entire first housing. This reduces the risk of plastic deformation or even breakage of the housing and improves the reliability of the battery device.

[0009] In some embodiments, the first flange portion includes a first flange edge, which is disposed on the end face of one end of the first housing in the length direction of the housing and extends along the width direction of the housing, and one end of the bracket is connected to the first flange edge.

[0010] In the above technical solution, by setting one end of the bracket to be connected to the first flange edge, and the first flange edge is located on the end face of one end of the first housing in the length direction of the housing, the bracket can reduce the maximum principal stress around the high voltage box while also improving the torsional stiffness of the rear of the vehicle.

[0011] In some embodiments, the bracket is arranged between the two end edges of the high-voltage box in the width direction of the enclosure.

[0012] In the above technical solution, by setting the bracket between the two end edges of the high-voltage box in the width direction of the box body, the bracket can be closer to the maximum amplitude point of the rear suspension torsional mode of the whole vehicle, thereby enabling the bracket to play a supporting and force transmission role. This allows the bracket to reduce the stress around the high-voltage box and improve the torsional stiffness of the rear of the vehicle.

[0013] In some embodiments, the number of supports is multiple, and the multiple supports are arranged at intervals along the width direction of the housing.

[0014] In the above technical solution, by setting multiple supports, the structural strength at the connection between the box and the high-voltage box can be further improved. At the same time, the force transmission path can be further increased, the stress dispersion effect can be improved, and the deformation resistance of the entire box can be further improved, thereby reducing the risk of plastic deformation or even cracking of the box and improving the reliability of the battery device.

[0015] In some embodiments, the support is a plate extending along the width direction of the box, and both sides of the support in the width direction of the box are formed with flanges.

[0016] In the above technical solution, by setting a flange, the structural strength of the support can be improved, thereby improving the support's resistance to torsion and deformation, and thus improving the support's stress bearing capacity.

[0017] In some embodiments, the bracket includes: a first plate portion extending horizontally and disposed on the side of the first flange portion facing the second housing; a connecting plate portion, one end of which is connected to the side of the first plate portion facing the second housing, and the other end of which extends along the height direction of the housing in a direction away from the first housing; and a second plate portion, one end of which is connected to the other end of the connecting plate portion, and the other end of which is fixedly connected to the second housing.

[0018] In the above technical solution, by setting the bracket to include a first plate, a connecting plate, and a second plate, the multi-directional torsional torque transmitted from the rear axle of the vehicle can be converted into a shear-bending composite force in the plane of the bracket itself. This simplifies the complex stress that originally needed to be borne by the side wall of the second housing, the first housing, and the vehicle floor into a controllable stress field of a single component of the bracket. Thus, the distribution of the "shear-bending composite force" can be precisely controlled by material selection (such as high-strength steel) and size optimization (such as thickening the bending area), ensuring that the stress value is within the allowable range of the material. This reduces the manufacturing difficulty and production cost of the entire battery device.

[0019] In some embodiments, the bracket further includes a reinforcing rib connected between the connecting plate portion and the second plate portion.

[0020] In the above technical solution, by setting reinforcing ribs, it is beneficial to improve the safety factor of local buckling, thereby significantly improving the overall stability and load-bearing capacity of the support structure and reducing the risk of structural failure caused by local buckling.

[0021] In some embodiments, weight-reducing holes are formed on the support.

[0022] In the above technical solution, by forming weight-reducing holes on the bracket, the overall weight of the bracket can be reduced, thereby reducing the overall weight of the entire box and achieving lightweighting of the battery device.

[0023] In some embodiments, weight reduction holes are formed in the connecting plate portion.

[0024] In the above technical solution, by arranging the weight reduction holes in the connecting plate, the overall weight of the bracket can be reduced while ensuring the stability of the connection with the first and second housings.

[0025] In some embodiments, a fixed bracket is formed on the second housing, and the other end of the bracket is fixedly connected to the fixed bracket.

[0026] In the above technical solution, by setting a fixed bracket, it is beneficial to connect the bracket and the second housing, thereby improving the convenience of connecting the bracket and the second housing; at the same time, when the bracket is damaged, it will not directly affect the second housing, thereby reducing the maintenance cost of the housing.

[0027] In some embodiments, the fixed bracket includes a horizontally extending fixed plate, and the other end of the bracket is formed as a horizontally extending second plate portion, which is fixedly connected to the fixed plate.

[0028] In the above technical solution, by setting a horizontally extending fixed plate and a second plate, the contact area between the bracket and the fixed bracket can be increased, thereby improving the connection stability between the bracket and the fixed bracket, and thus improving the connection stability between the bracket and the second housing.

[0029] In some embodiments, a first positioning portion is formed on the second plate portion, and a second positioning portion is formed on the fixed plate, wherein the first positioning portion and the second positioning portion are positioned and engaged.

[0030] In the above technical solution, by setting the first positioning part and the second positioning part, the installation accuracy and speed of the bracket and the fixed bracket can be improved.

[0031] In some embodiments, one of the first positioning portion and the second positioning portion is formed as a positioning protrusion and the other is formed as a positioning groove, with the positioning protrusion fitting into the positioning groove.

[0032] In the above technical solution, by setting one of the first positioning part and the second positioning part to be a positioning protrusion and the other to be a positioning groove, the manufacturing difficulty of the bracket and the fixed bracket can be reduced, thereby increasing the manufacturing speed of the bracket and the box and reducing the manufacturing cost of the bracket and the box.

[0033] In some embodiments, the housing further includes a reinforcing member connected between the fixed bracket and the second housing.

[0034] In the above technical solution, by setting reinforcement components, the connection strength between the fixed bracket and the second housing can be improved, thereby effectively reducing the risk of the fixed bracket falling off, and thus increasing the connection stability between the bracket and the second housing.

[0035] In some embodiments, the reinforcing member is formed as a reinforcing plate perpendicular to the width direction of the housing, and the width dimension of the reinforcing member gradually increases in the direction from the first housing to the second housing; and / or, there are multiple reinforcing members, and the multiple reinforcing members are arranged at intervals along the width direction of the housing.

[0036] In the above technical solution, by setting the reinforcing member to form a reinforcing plate, the manufacturing difficulty of the reinforcing member and the connection difficulty between the reinforcing member and the fixed bracket and the second box can be reduced; by setting multiple reinforcing members, the connection strength between the fixed bracket and the second box can be further increased, thereby effectively reducing the risk of the fixed bracket falling off, and thus increasing the connection stability between the bracket and the second box.

[0037] In some embodiments, the middle position of the bracket is spaced apart from the second box in the length direction of the box in the height direction of the box, so as to define a clearance space.

[0038] In the above technical solution, by setting up clearance space, the arrangement of the bracket can be made to not encroach on the installation space of any pipeline, thereby ensuring the smooth arrangement of components such as wiring harnesses and cooling hard pipes, reducing assembly difficulties, pipeline damage or maintenance inconvenience caused by bracket interference, and thus effectively improving the integration and overall reliability of the battery system.

[0039] Secondly, embodiments of this application also provide an electrical device, including a battery device according to the first aspect of this application.

[0040] In the above technical solution, by setting the battery device of the first aspect embodiment, the overall performance of the power-consuming device is improved.

[0041] In some embodiments, the electrical device is a vehicle, the first housing is part of the vehicle chassis, the vehicle includes a mounting beam, one end of the bracket and the first housing are fixedly connected to the mounting beam via a mounting member.

[0042] In the above technical solution, by setting the first housing as part of the vehicle chassis, the space utilization of the vehicle can be improved. By setting one end of the bracket and the first housing to be fixedly connected to the mounting beam through the mounting component, the mounting beam, the first housing and the second housing can form a rectangular support moment through the bracket. The torsional stress of the vehicle is distributed on the first housing, the second housing and the chassis through the bracket, thereby reducing the stress concentration at the connection position between the high voltage box and the first housing and its surrounding area. This can increase the stress load in this area, improve the deformation resistance of the entire first housing, reduce the risk of plastic deformation or even cracking of the housing, and improve the reliability of the battery device.

[0043] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of a vehicle according to an embodiment of this application;

[0045] Figure 2 This is a schematic diagram of a battery device according to an embodiment of this application;

[0046] Figure 3 This is a partial schematic diagram of a battery device according to another embodiment of this application;

[0047] Figure 4 This is a schematic diagram of a battery device according to another embodiment of this application;

[0048] Figure 5 yes Figure 4 Enlarged view of point A circled in the image;

[0049] Figure 6 This is a schematic diagram of a battery device according to another embodiment of this application from another angle;

[0050] Figure 7 yes Figure 6 Enlarged view of point B circled in the image;

[0051] Figure 8 It is along Figure 6 The cross-sectional view of line AA shown;

[0052] Figure 9 yes Figure 4 A schematic diagram of the bracket shown;

[0053] Figure 10 It is along Figure 6 The cross-sectional view of the BB line shown;

[0054] Figure 11 yes Figure 3 A partial schematic diagram of the second box shown.

[0055] Figure label:

[0056] 1000, vehicles;

[0057] 100. Battery device;

[0058] 10. Housing; 101. Receiving cavity; 1. First housing; 11. First flange; 111. First flange edge; 2. Second housing; 21. Second flange; 211. Clearance groove; 3. Fixing bracket; 4. Reinforcing member;

[0059] 20. High-voltage box;

[0060] 30. Bracket; 31. First plate; 311. First mounting hole; 32. Second plate; 321. Positioning groove; 322. Second mounting hole; 33. Connecting plate; 34. Flanged edge; 35. Reinforcing rib; 36. Weight reduction hole; 37. Clearance space;

[0061] 40. Mounting components;

[0062] 50. Battery cell;

[0063] 200, controller; 300, motor. Detailed Implementation

[0064] 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.

[0065] 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.

[0066] 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, unless otherwise explicitly defined.

[0067] 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.

[0068] 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.

[0069] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[0070] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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.

[0071] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0072] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied 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 power battery applications, market demand is also constantly increasing.

[0073] To facilitate efficient use of battery volume and replacement of vulnerable components, the high-voltage box and control system are currently often integrated and externally mounted on the rear side of the battery pack, under the rear seats of the vehicle. However, since integrated high-voltage boxes are typically quite heavy, and considering seat layout, they are usually horizontally placed rectangular structures, relying primarily on the structure of the battery pack cover for support. This results in increased localized stress loads and excessive stiffness in the rear cover, leading to torsional stress concentration at the connection between the high-voltage box and the cover, ultimately causing plastic deformation or even breakage of the box.

[0074] Based on the above considerations, in order to solve the problem of plastic deformation or even cracking of the housing caused by torsional stress concentration at the connection between the high-voltage box and the top cover, the embodiments of this application provide a battery device, including a housing, a high-voltage box, and a bracket. The housing includes a first housing and a second housing, which cover each other and jointly define a receiving cavity. The first housing has a first flange extending outward from the receiving cavity. The high-voltage box is arranged on the side of the first housing away from the second housing and is fixed to one end of the first housing in the length direction of the housing. The bracket is arranged on the side of the housing close to the high-voltage box in the length direction of the housing and extends along the height direction of the housing. One end of the bracket is connected to the first flange and the other end is fixed to the second housing. This allows the force acting on the first housing and transmitted to the periphery of the high-voltage box to be transmitted along the first flange to the second housing, and also along the first flange to the support, and then through the support to the second housing. This increases the force transmission path, thereby reducing stress concentration in the first housing around the high-voltage box and increasing the stress load in that area. This improves the overall deformation resistance of the first housing, reduces the risk of plastic deformation or even breakage, and thus improves the reliability of the battery device.

[0075] The battery device disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0076] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0077] Reference Figure 1 , Figure 1 This is a schematic diagram 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. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery device 100 is disposed 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.

[0078] 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.

[0079] Reference Figure 2 , Figure 2 This is a schematic diagram of a battery device 100 according to some embodiments of this application. The battery device 100 includes a housing 10 and a battery cell 50. The housing 10 has a cavity, and the battery cell 50 is accommodated within the cavity of the housing 10. The housing 10 provides a space for accommodating the battery cell 50, and the housing 10 can adopt various structures. In some embodiments, the housing 10 may include a first part (e.g., a first housing 1 as described below) and a second part (e.g., a second housing 2 as described below), the first housing 1 and the second housing 2 being connected to jointly define a receiving cavity 101 for accommodating the battery cell 50. The first housing 1 may be a hollow structure with one end open, and the second housing 2 may be a plate-like structure, the second housing 2 covering the open side of the first housing 1 to close the open side of the first housing 1; the first housing 1 and the second housing 2 may also both be hollow structures with one side open, the open side of the first housing 1 covering the open side of the second housing 2. Of course, the box 10 formed by the first box 1 and the second box 2 can be of various shapes, such as cylinder, cuboid, etc.

[0080] In the battery device 100, there can be multiple battery cells 50, which can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 50 are connected in both series and parallel configurations. Multiple battery cells 50 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 50 is housed within the housing 10. Alternatively, the battery device 100 can also consist of multiple battery cells 50 first connected in series, parallel, or in a mixed configuration to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is also housed within the housing 10. The battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 50.

[0081] Each battery cell 50 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 50 can be cylindrical, flat, cuboid, or other shapes.

[0082] The following is for reference. Figures 3-11 A battery device 100 according to an embodiment of the first aspect of this application is described. Figure 3 This is a partial schematic diagram of a battery device 100 according to other embodiments of this application; Figure 4This is a schematic diagram of a battery device according to another embodiment of this application. Figure 5 yes Figure 4 The enlarged view of point A circled in the image. Figure 6 This is a schematic diagram of a battery device according to other embodiments of this application from another angle. Figure 7 yes Figure 6 The enlarged view of point B circled in the image. Figure 8 It is along Figure 6 The cross-sectional view of line AA shown. Figure 9 yes Figure 4 A schematic diagram of the bracket shown. Figure 10 It is along Figure 6 The cross-sectional view of the BB line shown. Figure 11 yes Figure 3 A partial schematic diagram of the second box shown.

[0083] Embodiments of this application provide a battery device 100, with reference to... Figures 3-4 The battery device 100 includes: a housing 10, a high-voltage box 20, and a bracket 30.

[0084] Among them, reference Figures 3-5 The enclosure 10 includes: a first enclosure 1 and a second enclosure 2, which cover each other and jointly define a receiving cavity 101. The first enclosure 1 has a first flange portion 11 extending outward from the receiving cavity 101, and the second enclosure 2 has a second flange portion 21 extending outward from the receiving cavity 101. The first flange portion 11 and the second flange portion 21 are arranged opposite to each other in the height direction of the enclosure 10. The high-voltage box 20 is arranged on the side of the first enclosure 1 away from the second enclosure 2 and is fixed at one end of the first enclosure 1 in the length direction of the enclosure 10. The bracket 30 is arranged on the side of the enclosure 10 close to the high-voltage box 20 in the length direction and extends along the height direction of the enclosure 10. The outer periphery of the second flange portion 21 forms a relief groove 211 that is recessed into the receiving cavity 101. At least a portion of one end of the bracket 30 is arranged in the relief groove 211 and connected to the first flange portion 11. The other end of the bracket 30 is fixed to the second enclosure 2.

[0085] Specifically, the first housing 1 and the second housing 2 together provide housing space and protection for the battery cell 50, thereby improving the reliability of the battery device 100. It should be noted that one of the first housing 1 and the second housing 2 is formed as the lower housing and the other as the upper housing; their specific locations are not limited in this application.

[0086] The first flange 11 and the second flange 21 are arranged opposite to each other in the height direction of the housing 10 and are connected by fasteners or structural adhesive to fix the first housing 1 and the second housing 2, thereby sealing the entire housing 10 and achieving the protective function of the housing 10.

[0087] The high-voltage box 20 is mainly used to manage the high-voltage power distribution of the entire vehicle, enabling individual control of each output and management of high-voltage safety. It has overcurrent, overvoltage, and overtemperature protection functions, and also has CAN communication capabilities for real-time data exchange. The high-voltage box 20 integrates key components such as relays and high-voltage connectors, making it a high-frequency operation point for fault diagnosis and component replacement.

[0088] The phrase "the high-voltage box 20 is arranged on the side of the first housing 1 away from the second housing 2" indicates that the high-voltage box 20 is an external high-voltage box 20, located on the outside of the housing 10. Therefore, when maintenance or routine inspection of the high-voltage box 20 is required, it can be accessed directly without disassembling the entire battery housing 10, significantly reducing maintenance time. Furthermore, the external high-voltage box 20 reduces the space occupied inside the housing 10, thereby improving the utilization rate of the internal space and increasing the energy density of the battery.

[0089] The length direction of the box 10 is the longest direction of the box 10 (e.g., Figure 2 (As shown in the front-to-back direction), for example, when the battery device 100 is applied to the vehicle 1000, the length direction of the housing 10 is generally the front-to-back direction of the vehicle 1000. Thus, the high-voltage box 20 is fixed to one end of the first housing 1 in the length direction of the housing 10, that is, when the battery device 100 is applied to the vehicle 1000, the high-voltage box 20 can be arranged at the front or rear end of the first housing 1.

[0090] The phrase "the bracket 30 is arranged on the side of the enclosure 10 close to the high voltage box 20 along the length of the enclosure 10" means that the bracket 30 is also arranged on the outside of the enclosure 10, and on the side of the enclosure 10 close to the high voltage box 20. It should be noted that the high voltage box 20 is generally rectangular. Therefore, the bracket 30 can be arranged at one end of the enclosure 10 along the length or close to the high voltage box 20 along the width. There are no restrictions here.

[0091] "At least a portion of one end of the bracket 30 is arranged in the relief groove 211 and connected to the first flange 11, and the other end of the bracket 30 is fixed to the second housing 2." It can be understood that the end of the bracket 30 connected to the first flange 11 can be partially or completely arranged in the relief groove 211. This can reduce the interference between the bracket 30 and the second flange 21, so that the force can be directly transmitted to the bracket 30 through the first flange 11, thereby reducing the risk of sealing failure at the connection between the first housing 1 and the second housing 2.

[0092] It should be further noted that in existing technologies, to facilitate optimized vehicle layout, the high-voltage box is generally located on the outer rear part of the battery cover, and under the rear seats of the vehicle. Considering the seat arrangement, the high-voltage box usually has a horizontally placed cuboid structure and is mainly supported by the structure of the battery cover itself. This can lead to increased local stress load and excessive local stiffness in the rear cover, resulting in torsional stress concentration, which can cause plastic deformation or even cracking of the box.

[0093] In this embodiment, by setting a bracket 30 extending along the height direction of the housing 10, with one end of the bracket 30 connected to the first flange 11 and the other end fixed to the second housing 2, the bracket 30 can provide support when the torsional torque transmitted from the rear axle of the vehicle attempts to cause relative torsion between the first housing 1 and the second housing 2. This directly resists the relative rotation, and the torsional torque can be directly and efficiently transmitted from the first housing 1 to the second housing 2 through the bracket 30. This effectively reduces the force transmitted to the first housing 1, suppresses the relative deformation between the two housings 10, and significantly improves the overall torsional rigidity of the entire vehicle 1000. This design improves rigidity and allows forces acting on the first housing 1 and transmitted to the periphery of the high-voltage box 20 to be transmitted along the first flange 11 to the second housing 2, and also along the first flange 11 to the support 30, and then through the support 30 to the second housing 2. This increases the force transmission path, thereby reducing stress concentration in the first housing 1 around the high-voltage box 20 and increasing the stress load in that area. This improves the overall deformation resistance of the first housing 1, reduces the risk of plastic deformation or even breakage of the housing 10, and thus improves the reliability of the battery device 100.

[0094] In the above technical solution, by setting the bracket 30, the transmission path of the force acting on the first housing 1 and transmitted to the periphery of the high voltage box 20 can be increased, thereby reducing the stress concentration of the first housing 1 at the periphery of the high voltage box 20 and increasing the stress load in this area. This can improve the deformation resistance of the entire first housing 1, reduce the risk of plastic deformation or even breakage of the housing 10, and thus improve the reliability of the battery device 100.

[0095] In some embodiments, refer to Figure 3 , Figure 5 , Figure 7 and Figure 8 The first flange 11 is provided with a mounting component 40, and one end of the bracket 30 is connected to the first flange 11 through the mounting component 40.

[0096] The mounting component 40 is mainly used to fix the battery device 100 to the electrical device. Therefore, it can be understood that "the first flange 11 is provided with a mounting component 40, and one end of the bracket 30 is connected to the first flange 11 through the mounting component 40" means that the bracket 30, the first flange 11 and the electrical device can be connected as a whole through the mounting component 40.

[0097] Therefore, when the electrical device is subjected to force, the force acting on the battery device 100 can be transmitted through two paths. Path one: the force can be transmitted through the mounting member 40 to the first flange 11, and then through the first flange 11 to the first housing 1. Path two: the force can be transmitted through the mounting member 40 to the bracket 30, and then through the bracket 30 to the second housing 2. When the first housing 1 is subjected to force, the force acting on the first housing 1 can also be transmitted through two paths. Path one: the first housing 1 can transmit the force to the electrical device through the mounting member 40. Path two: the first housing 1 can also transmit the force to the bracket 30 through the mounting member 40, and then through the bracket 30 to the second housing 2.

[0098] For example, when the electrical device is a vehicle 1000, the housing 10 is fixed to the chassis of the vehicle 1000 via the first flange 11. The high-voltage box 20 is arranged on the upper side of the first housing 1 and at the rear end of the first housing 1. When the vehicle 1000 twists, part of the torsional force of the vehicle 1000 can be transmitted to the first housing 1 through the mounting member 40, and then transmitted downward through the first housing 1 to the second housing 2, or transmitted to the second housing 2 through the bracket 30, or transmitted back to the chassis of the vehicle 1000 through the mounting member 40; part can be directly transmitted to the bracket 30 through the mounting member 40, and then transmitted to the second housing 2 through the bracket 30. In this way, the stress concentration at the periphery of the high-voltage box 20 in the first housing 1 can be reduced, thereby increasing the stress load in this area, thereby improving the deformation resistance of the entire first housing 1, reducing the risk of plastic deformation or even cracking of the housing 10, and thus improving the reliability of the battery device 100.

[0099] For example Figures 3-5 , Figures 7-8 As shown, a first mounting hole 311 is formed on the bracket 30, and a mounting hole is formed on the mount 40. Fasteners are adapted to pass through the first mounting hole 311 and the mounting hole to connect the bracket 30 to the first housing 1 and the chassis of the vehicle 1000.

[0100] In the above technical solution, by providing a mounting member 40 on the first flange 11, and connecting one end of the bracket 30 to the first flange 11 through the mounting member 40, the stress concentration at the connection point between the high voltage box 20 and the first housing 1 and its surrounding area can be reduced, thereby increasing the stress load in this area and improving the deformation resistance of the entire first housing 1. This can reduce the risk of plastic deformation or even breakage of the housing 10 and improve the reliability of the battery device 100.

[0101] In some embodiments, refer to Figure 3 The first flange portion 11 includes a first flange edge 111, which is located on the end face of one end of the first housing 1 in the length direction of the housing 10 and extends along the width direction of the housing 10. One end of the bracket 30 is connected to the first flange edge 111.

[0102] It is understandable that the bracket 30 is located at one end of the length direction of the first housing 1, rather than on one side of the width direction. It should be noted that when the battery device 100 is used in the vehicle 1000, the location of the high-voltage box 20 is the point of maximum amplitude of the rear suspension torsional mode of the entire vehicle. Therefore, connecting the bracket 30 to the first flange edge 111 can reduce the maximum principal stress around the high-voltage box 20 while also improving the torsional stiffness of the rear of the vehicle.

[0103] In the above technical solution, by setting one end of the bracket 30 to be connected to the first flange edge 111, and the first flange edge 111 is located on the end face of one end of the first housing 1 in the length direction of the housing 10, the bracket 30 can reduce the maximum principal stress around the high voltage box 20 while also improving the torsional stiffness of the rear of the vehicle.

[0104] In some embodiments, the bracket 30 is arranged between the two end edges of the high-voltage box 20 in the width direction of the housing 10.

[0105] In the above technical solution, by setting the bracket 30 between the two end edges of the high-voltage box 20 in the width direction of the housing 10, the bracket 30 can be closer to the maximum amplitude point of the rear suspension torsional mode of the whole vehicle, thereby enabling the bracket 30 to play a supporting and force transmission role. Thus, the setting of the bracket 30 can reduce the stress around the high-voltage box 20 and improve the torsional stiffness of the rear of the vehicle.

[0106] In some embodiments, refer to Figure 3 There are multiple supports 30, and the multiple supports 30 are arranged at intervals along the width direction of the box 10.

[0107] For example, the number of stents 30 can be two, three or more.

[0108] Optionally, multiple supports 30 are arranged between the two end edges of the high-voltage box 20 in the width direction of the housing 10, and symmetrically arranged along the center line of the high-voltage box 20 in the width direction of the housing 10. This can further improve the uniformity of stress distribution.

[0109] In the above technical solution, by setting multiple supports 30, the structural strength at the connection between the housing 10 and the high-voltage box 20 can be further improved. At the same time, the force transmission path can be further increased, the stress dispersion effect can be improved, and the deformation resistance of the entire housing 10 can be further improved, thereby reducing the risk of plastic deformation or even cracking of the housing 10 and improving the reliability of the battery device 100.

[0110] In some embodiments, refer to 3- Figure 5 The support 30 is a plate extending along the width direction of the box 10, and the support 30 has flanges 34 on both sides of the box 10 in the width direction.

[0111] Optionally, the flange 34 is formed by bending, which can further improve the structural strength of the bracket 30, thereby improving the bracket 30's resistance to torsion and deformation.

[0112] In the above technical solution, by setting the flange 34, the structural strength of the support 30 can be improved, thereby improving the torsional and deformation resistance of the support 30, and thus improving the stress bearing capacity of the support 30.

[0113] In some embodiments, refer to Figures 8-9 The bracket 30 includes: a first plate portion 31, a connecting plate portion 33, and a second plate portion 32. The first plate portion 31 extends horizontally. One end of the connecting plate portion 33 is connected to the side of the first plate portion 31 facing the second housing 2, and the other end of the connecting plate portion 33 extends along the height direction of the housing 10 in a direction away from the first housing 1. The second plate portion 32 has one end connected to the other end of the connecting plate portion 33, and the other end of the second plate portion 32 is fixedly connected to the second housing 2.

[0114] It is understandable that the bracket 30 is formed as a "Z"-shaped bracket 30, that is, the bracket 30 includes two bends with opposite bending directions.

[0115] The Z-shaped bend can form a closed rectangular force transmission loop in the XY plane, which can transform the multi-directional torsional moment transmitted from the rear axle of the vehicle into a shear-bending composite force in the plane of the bracket 30 itself. This simplifies the complex stress that originally needed to be borne by the side wall of the second housing 2, the first housing 1, and the vehicle 1000 floor plate into a controllable stress field of the bracket 30 as a single component. Thus, the distribution of the "shear-bending composite force" can be precisely controlled by material selection (such as high-strength steel) and size optimization (such as thickening the bend), ensuring that the stress value is within the allowable range of the material. This reduces the manufacturing difficulty and production cost of the entire battery device 100.

[0116] In the above technical solution, by setting the bracket 30 to include a first plate portion 31, a connecting plate portion 33, and a second plate portion 32, the multi-directional torsional torque transmitted from the rear axle of the vehicle can be converted into a shear-bending composite force in the plane of the bracket 30 itself. This simplifies the complex stress that originally needed to be borne by the side wall of the second housing 2, the first housing 1, and the vehicle 1000 floor plate into a controllable stress field of a single component, the bracket 30. Thus, the distribution of the "shear-bending composite force" can be precisely controlled by material selection (such as high-strength steel) and size optimization (such as thickening the bending area), ensuring that the stress value is within the allowable range of the material. As a result, the manufacturing difficulty of the entire battery device 100 can be reduced, and the production cost of the entire battery device 100 can be reduced.

[0117] In some embodiments, refer to Figure 9 The bracket 30 also includes a reinforcing rib 35, which is connected between the connecting plate portion 33 and the second plate portion 32.

[0118] Optionally, multiple reinforcing ribs 35 are arranged at intervals on the support 30. This can further enhance the structural strength of the support 30, thereby further improving its overall stability and load-bearing capacity.

[0119] In the above technical solution, by setting the reinforcing rib 35, it is beneficial to improve the safety factor of local buckling, thereby significantly improving the overall stability and load-bearing capacity of the support 30 structure and reducing the risk of structural failure caused by local buckling.

[0120] In some embodiments, refer to Figure 9 The support 30 has weight reduction holes 36.

[0121] It should be noted that the number of weight reduction holes 36 can be one or more, and the specific number and location can be designed according to the actual situation.

[0122] In the above technical solution, by forming weight-reducing holes 36 on the bracket 30, the overall weight of the bracket 30 can be reduced, thereby reducing the overall weight of the entire housing 10 and achieving lightweighting of the battery device 100.

[0123] In some embodiments, refer to Figure 9 Weight reduction hole 36 is formed in connecting plate portion 33.

[0124] It should be noted that the connecting plate 33 mainly serves to connect the first plate 31 and the second plate 32 and to transmit force. Therefore, arranging the weight reduction hole 36 in the connecting plate 33 is beneficial to the layout of the bracket 30, so that the bracket 30 can reduce the overall weight without affecting the force transmission and the connection stability with the first housing 1 and the second housing 2.

[0125] In the above technical solution, by arranging the weight reduction hole 36 in the connecting plate part 33, the overall weight of the bracket 30 can be reduced while ensuring the connection stability with the first box 1 and the second box 2.

[0126] In some embodiments, refer to Figure 3 and Figure 11 A fixed bracket 3 is formed on the second housing 2, and the other end of the bracket 30 is fixedly connected to the fixed bracket 3.

[0127] In the above technical solution, by setting a fixed bracket 3, it is beneficial to connect the bracket 30 with the second box 2, thereby improving the connection convenience between the bracket 30 and the second box 2; at the same time, when the bracket 30 is damaged, it will not directly affect the second box 2, thereby reducing the maintenance cost of the box 10.

[0128] In some embodiments, refer to Figure 3 and Figure 11 The fixed bracket 3 includes a horizontally extending fixed plate, and the other end of the bracket 30 is formed as a horizontally extending second plate portion 32, which is fixedly connected to the fixed plate.

[0129] For example Figure 11 As shown, one end of the fixing plate is connected to the second housing 2, and the other end extends along the length of the housing 10 toward the side opposite to the second housing 2. The second plate portion 32 is fixedly connected to the fixing plate. It should be noted that the second plate portion 32 can be fixed to the upper part of the fixing plate or the lower part of the fixing plate; there is no limitation here.

[0130] For example Figure 9 and Figure 11 As shown, a second mounting hole 322 is formed on the second plate portion 32, and a first connecting hole is formed on the fixing plate. Fasteners pass through the second mounting hole 322 and the first connecting hole to fix the second plate portion 32 on the fixing plate.

[0131] In the above technical solution, by setting a horizontally extending fixing plate and a second plate portion 32, the contact area between the bracket 30 and the fixed bracket 3 can be increased, thereby improving the connection stability between the bracket 30 and the fixed bracket 3, and thus improving the connection stability between the bracket 30 and the second housing 2.

[0132] In some embodiments, the second plate portion 32 is formed with a first positioning portion, and the fixed plate is formed with a second positioning portion, wherein the first positioning portion and the second positioning portion are positioned and engaged.

[0133] Specifically, when the bracket 30 is connected to the second housing 2, the first positioning part and the second positioning part can be positioned and engaged first, and then the second plate part 32 and the fixing plate can be fixed. In this way, the installation accuracy and speed of the bracket 30 can be improved.

[0134] It should be noted that the types of the first positioning part and the second positioning part include various types. For example, one of them may be formed as a positioning groove, and the other may be formed as a positioning pin or a positioning protrusion. No limitation is made here.

[0135] In the above technical solution, by setting the first positioning part and the second positioning part, the installation accuracy and speed of the bracket 30 and the fixed bracket 3 can be improved.

[0136] In some embodiments, one of the first positioning portion and the second positioning portion is formed as a positioning protrusion, and the other is formed as a positioning groove 321, with the positioning protrusion fitting into the positioning groove 321.

[0137] The positioning protrusion and positioning groove 321 have relatively simple structures, are easy to manufacture, and are easy to fit together. Thus, one of the first positioning part and the second positioning part is formed as a positioning protrusion and the other is formed as a positioning groove 321, which can reduce the manufacturing difficulty of the bracket 30 and the fixed bracket 3, thereby increasing the manufacturing speed of the bracket 30 and the box 10 and reducing the manufacturing cost of the bracket 30 and the box 10.

[0138] In the above technical solution, by setting one of the first positioning part and the second positioning part to be a positioning protrusion and the other to be a positioning groove 321, the manufacturing difficulty of the bracket 30 and the fixed bracket 3 can be reduced, thereby increasing the manufacturing speed of the bracket 30 and the box 10 and reducing the manufacturing cost of the bracket 30 and the box 10.

[0139] In some embodiments, refer to Figure 3 , Figure 10 and Figure 11 The housing 10 also includes a reinforcing member 4, which is connected between the fixed bracket 3 and the second housing 2.

[0140] In the above technical solution, by setting the reinforcing member 4, the connection strength between the fixed bracket 3 and the second housing 2 can be improved, thereby effectively reducing the risk of the fixed bracket 3 falling off, and thus increasing the connection stability between the bracket 30 and the second housing 2.

[0141] In some embodiments, refer to Figure 3 , Figure 10 and Figure 11 The reinforcing member 4 is formed as a reinforcing plate perpendicular to the width direction of the housing 10, and the width dimension of the reinforcing member 4 gradually increases in the direction from the first housing 1 to the second housing 2.

[0142] Specifically, the reinforcing member 4 is connected to the side of the fixed bracket 3 facing the first housing 1. Thus, in the direction from the first housing 1 to the second housing 2, the width of the reinforcing member 4 gradually increases. In other words, the connection area between the reinforcing member 4 and the fixed bracket 3 is relatively large, which can improve the connection stability between the reinforcing member 4 and the fixed bracket 3.

[0143] In the above technical solution, by setting the reinforcing member 4 to form a reinforcing plate, the manufacturing difficulty of the reinforcing member 4 and the connection difficulty between the reinforcing member 4 and the fixed bracket 3 and the second box 2 can be reduced.

[0144] In some embodiments, refer to Figure 3 and Figure 11 There are multiple reinforcing members 4, which are arranged at intervals along the width direction of the housing 10.

[0145] For example, the number of reinforcing members 4 can be two, three or more. Multiple reinforcing members 4 can increase the connection strength between the fixed bracket 3 and the second housing 2, thereby effectively reducing the risk of the fixed bracket 3 falling off. Thus, the connection stability between the bracket 30 and the second housing 2 can be increased.

[0146] For example Figure 11 As shown, there are two reinforcing members 4. The reinforcing member 4 is formed as a triangular plate, and the fixed bracket 3 is formed as a fixed plate. The reinforcing member 4 is connected to both ends of the fixed plate in the left and right directions, and the front end of the reinforcing member 4 is connected to the outer wall of the second box 2.

[0147] In the above technical solution, by setting multiple reinforcing members 4, the connection strength between the fixed bracket 3 and the second housing 2 can be further increased, thereby effectively reducing the risk of the fixed bracket 3 falling off, and thus increasing the connection stability between the bracket 30 and the second housing 2.

[0148] In some embodiments, refer to Figure 10 In the height direction of the housing 10, the middle position of the support 30 and the second housing 2 are arranged at intervals in the length direction of the housing 10 to help define the clearance space 37.

[0149] It should be noted that when the battery device 100 is placed on the electrical device, it is usually connected to other parts of the electrical device (such as motors, control systems, etc.) through some external wiring harnesses, so as to realize the supply of power and the exchange of data information. Since the battery device 100 generates heat during use, in order to ensure the reliability of the battery device 100, a thermal management system is generally set in the battery device 100. The thermal management system requires an external cooling medium. Therefore, wiring harnesses and cooling pipes are generally arranged on the outside of the housing 10. In the height direction of the housing 10, the middle position of the bracket 30 cooperates with the second housing 2 to define a clearance space 37. This allows the arrangement of the bracket 30 to not encroach on the installation space of any pipelines, thereby ensuring the smooth arrangement of wiring harnesses and cooling pipes, reducing assembly difficulties, pipeline damage or maintenance inconvenience caused by the bracket 30 interference, and thus effectively improving the integration and overall reliability of the battery system.

[0150] In the above technical solution, by setting the clearance space 37, the arrangement of the bracket 30 can be made not to encroach on the installation space of any pipeline, thereby ensuring the smooth arrangement of components such as wiring harnesses and cooling hard pipes, reducing assembly difficulties, pipeline damage or maintenance inconvenience caused by interference from the bracket 30, and thus effectively improving the integration and overall reliability of the battery system.

[0151] Secondly, embodiments of this application also provide an electrical device, including a battery device 100 according to the first aspect of this application.

[0152] In the above technical solution, by setting the battery device 100 of the first aspect embodiment, the overall performance of the power-consuming device is improved.

[0153] In some embodiments, the electrical device is a vehicle 1000, the first housing 1 is part of the chassis of the vehicle 1000, the vehicle 1000 includes a mounting beam, one end of the bracket 30 and the first housing 1 are fixedly connected to the mounting beam via a mounting member 40.

[0154] It is understandable that the first box 1 is the upper cover or upper box of the battery device 100, and also the floor of the vehicle 1000. The second box 2 is the lower box. That is to say, the second box 2 is sealed and installed with the bottom plate of the vehicle 1000 to form a protective shell for the battery device 100.

[0155] One end of the bracket 30 is fixedly connected to the first housing 1 and the mounting beam via the mounting member 40, and the other end is connected to the second housing 2. That is to say, the mounting beam, the first housing 1 and the second housing 2 are connected as one unit by the bracket 30. In this way, when the vehicle 1000 twists, part of the torsional force of the vehicle 1000 can be transmitted to the first housing 1 through the mounting member 40, and then transmitted downward to the second housing 2 through the first housing 1, or transmitted to the second housing 2 through the bracket 30, or transmitted back to the chassis of the vehicle 1000 through the mounting member 40; part can be directly transmitted to the bracket 30 through the mounting member 40, and then transmitted to the second housing 2 through the bracket 30. As a result, the stress concentration at the periphery of the high-voltage box 20 in the first housing 1 can be reduced, thereby increasing the stress load in this area, thereby improving the deformation resistance of the entire first housing 1, reducing the risk of plastic deformation or even cracking of the housing 10, and thus improving the reliability of the battery device 100.

[0156] In the above technical solution, by setting the first housing 1 as part of the chassis of the vehicle 1000, the space utilization of the vehicle 1000 can be improved. By setting one end of the bracket 30 and the first housing 1 to be fixedly connected to the mounting beam through the mounting member 40, the mounting beam, the first housing 1 and the second housing 2 can form a rectangular support moment through the bracket 30. The torsional stress of the vehicle 1000 is distributed on the first housing 1, the second housing 2 and the chassis through the bracket 30, thereby reducing the stress concentration at the connection position between the high voltage box 20 and the first housing 1 and its periphery, thereby increasing the stress load in this area and improving the deformation resistance of the entire first housing 1. This can reduce the risk of plastic deformation or even cracking of the housing 10 and improve the reliability of the battery device 100.

[0157] The following will refer to Figures 3-11 This application describes a battery device 100 according to a specific embodiment of the present application, wherein the battery device 100 is used in a vehicle 1000.

[0158] Reference Figure 3 The battery device 100 includes: a housing 10, a high-voltage box 20, and a bracket 30.

[0159] The housing 10 includes: a first housing 1 and a second housing 2, which cover each other and together define a receiving cavity 101. The first housing 1 has a first flange 11 extending outward from the receiving cavity 101. The first housing 1 is fixed to the chassis of the vehicle 1000 through the first flange 11, and the first housing 1 is formed as part of the chassis of the vehicle 1000. The high-voltage box 20 is arranged on the upper side of the first housing 1 and fixed to the rear end of the first housing 1. The bracket 30 is arranged at the rear end of the housing 10 and extends in the vertical direction. One end of the bracket 30 is connected to the first flange 11, and the other end is fixed to the second housing 2.

[0160] Specifically, the first flange 11 is provided with a mounting member 40, which includes a first mounting member and a second mounting member. The first flange 11 is fixed to the chassis of the vehicle 1000 through the first mounting member, and one end of the bracket 30 is connected to the first flange 11 and the chassis of the vehicle 1000 through the second mounting member.

[0161] Furthermore, the first flange portion 11 includes a first flange edge 111, which is located on the end face of the rear end of the first housing 1 and extends in the left-right direction, and one end of the bracket 30 is connected to the first flange edge 111.

[0162] The bracket 30 includes a first plate portion 31, a second plate portion 32, and a connecting plate portion 33. Both the first plate portion 31 and the second plate portion 32 extend horizontally. The first plate portion 31 is arranged on the lower side of the first flange portion 11 and fits against the first flange portion 11. A horizontally extending fixing plate is formed on the side wall of the second housing 2. The second plate portion 32 is arranged at the lower end of the fixing plate and is fixedly connected to the fixing plate. The connecting plate portion 33 extends vertically and connects between the first plate portion 31 and the second plate portion 32. The connecting plate portion 33 and the second housing 2 are spaced apart in the front-back direction to define a clearance space 37 to avoid wiring harnesses and external pipelines.

[0163] Furthermore, a positioning protrusion is formed on the fixing plate, and a positioning groove 321 is formed on the second plate portion 32, with the positioning protrusion fitting into the positioning groove 321.

[0164] The bracket 30 also includes: reinforcing ribs 35, weight-reducing holes 36, and flanges 34. Specifically, there are multiple reinforcing ribs 35, and multiple reinforcing members 4 are connected between the connecting plate portion 33 and the second plate portion 32; there is one or more weight-reducing holes 36, and the weight-reducing holes 36 are formed in the connecting plate portion 33; the flanges 34 are formed on both sides of the bracket 30 in the left-right direction, and are formed by bending along the edges of the bracket 30.

[0165] Two triangular reinforcing plates are formed on the second housing 2. The two reinforcing plates are arranged at intervals from left to right and are connected between the upper end of the fixed plate and the side wall of the second housing 2.

[0166] Furthermore, there are multiple supports 30, which are arranged at intervals along the width direction of the enclosure 10. The multiple supports 30 are arranged between the two ends of the high voltage box 20 in the width direction of the enclosure 10, and the multiple supports 30 are arranged symmetrically along the center line of the high voltage box 20 in the left and right directions.

[0167] In the above technical solution, by setting the bracket 30, the transmission path of the force acting on the first housing 1 and transmitted to the periphery of the high voltage box 20 can be increased, thereby reducing the stress concentration of the first housing 1 at the periphery of the high voltage box 20 and increasing the stress load in this area. This can improve the deformation resistance of the entire first housing 1, reduce the risk of plastic deformation or even breakage of the housing 10, and thus improve the reliability of the battery device 100.

[0168] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The box (10) includes: a first box (1) and a second box (2), the first box (1) and the second box (2) cover each other and jointly define a receiving cavity (101), the first box (1) is provided with a first flange (11) extending outward from the receiving cavity (101), the second box (2) is provided with a second flange (21) extending outward from the receiving cavity (101), and the first flange (11) and the second flange (21) are arranged opposite to each other in the height direction of the box (10); High voltage box (20), the high voltage box (20) is arranged on the side of the first box (1) away from the second box (2), and is fixed to one end of the first box (1) in the length direction of the box (10); A bracket (30) is arranged on the side of the housing (10) close to the high voltage box (20) along the length direction and extends along the height direction of the housing (10). The outer periphery of the second flange (21) is formed with a relief groove (211) that is recessed toward the receiving cavity (101). At least a portion of one end of the bracket (30) is arranged in the relief groove (211) and connected to the first flange (11). The other end of the bracket (30) is fixed to the second housing (2).

2. The battery device according to claim 1, characterized in that, The first flange (11) is provided with a mounting member (40), and one end of the bracket (30) is connected to the first flange (11) through the mounting member (40).

3. The battery device according to claim 1, characterized in that, The first flange (11) includes a first flange edge (111), which is located at one end of the first housing (1) in the length direction of the housing (10) and extends along the width direction of the housing (10), and the one end of the bracket (30) is connected to the first flange edge (111).

4. The battery device according to claim 3, characterized in that, The bracket (30) is arranged between the two end edges of the high-voltage box (20) in the width direction of the housing (10).

5. The battery device according to claim 3, characterized in that, The number of brackets (30) is multiple, and the multiple brackets (30) are arranged at intervals along the width direction of the box (10).

6. The battery device according to any one of claims 1-5, characterized in that, The bracket (30) is a plate extending along the width direction of the box (10), and the bracket (30) has flanges (34) formed on both sides of the box (10) in the width direction.

7. The battery device according to any one of claims 1-5, characterized in that, The support (30) includes: The first plate portion (31) extends horizontally and is arranged on the side of the first flange portion (11) facing the second housing (2); A connecting plate (33) is provided, one end of which is connected to the side of the first plate (31) facing the second box (2), and the other end of which extends along the height direction of the box (10) in a direction away from the first box (1). The second plate (32) has one end connected to the other end of the connecting plate (33), and the other end of the second plate (32) is fixedly connected to the second housing (2).

8. The battery device according to claim 7, characterized in that, The bracket (30) further includes a reinforcing rib (35), which is connected between the connecting plate portion (33) and the second plate portion (32).

9. The battery device according to claim 7, characterized in that, The support (30) has weight-reducing holes (36).

10. The battery device according to claim 9, characterized in that, The weight reduction hole (36) is formed in the connecting plate portion (33).

11. The battery device according to any one of claims 1-5, characterized in that, A fixed bracket (3) is formed on the second housing (2), and the other end of the bracket (30) is fixedly connected to the fixed bracket (3).

12. The battery device according to claim 11, characterized in that, The fixed bracket (3) includes a horizontally extending fixed plate, and the other end of the bracket (30) is formed as a horizontally extending second plate portion (32), which is fixedly connected to the fixed plate.

13. The battery device according to claim 12, characterized in that, The second plate (32) has a first positioning part, and the fixed plate has a second positioning part, and the first positioning part and the second positioning part are positioned and engaged.

14. The battery device according to claim 13, characterized in that, One of the first positioning part and the second positioning part is formed as a positioning protrusion, and the other is formed as a positioning groove (321), wherein the positioning protrusion is fitted into the positioning groove (321).

15. The battery device according to claim 11, characterized in that, The housing (10) further includes a reinforcing member (4), which is connected between the fixed bracket (3) and the second housing (2).

16. The battery device according to claim 15, characterized in that, The reinforcing member (4) is formed as a reinforcing plate perpendicular to the width direction of the housing (10), and the width dimension of the reinforcing member (4) gradually increases in the direction from the first housing (1) to the second housing (2); and / or, The number of the reinforcing members (4) is multiple, and the multiple reinforcing members (4) are arranged at intervals along the width direction of the box body (10).

17. The battery device according to any one of claims 1-5, characterized in that, In the height direction of the box (10), the middle position of the bracket (30) and the second box (2) are arranged at intervals in the length direction of the box (10) to define a clearance space (37).

18. An electrical appliance, characterized in that, include: The battery device according to any one of claims 1-17.

19. The electrical appliance according to claim 18, characterized in that, The electrical device is a vehicle, the first housing (1) is part of the chassis of the vehicle, the vehicle includes a mounting beam, and one end of the bracket (30) and the first housing (1) are fixedly connected to the mounting beam through a mounting member (40).

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