Battery device and electric device

Abstract

The application discloses a battery device and an electric device, the battery device comprising: a box body, a plurality of structural beams extending in a first direction and arranged at intervals in a second direction are arranged in the box body; a battery cell assembly, the battery cell assembly is arranged between two adjacent structural beams and comprises a plurality of battery cells arranged in a stacking manner along the second direction; a pressing strip, the pressing strip is arranged on one side of the battery cell assembly in a third direction, the third direction is an up-down direction, the pressing strip extends along the second direction and two ends of the pressing strip are fixed with the two structural beams respectively; a support, the support is arranged on a side of the pressing strip away from the battery cell assembly in the third direction, the support is fixed with the pressing strip; and a high-voltage box, the high-voltage box is arranged on the support and located on a side of the support away from the battery cell assembly in the third direction. In the above technical manner, the pressing strip serves as a support and force bearing structure of a middle position of the support in the first direction, and the mounting stability and reliability of the support and the high-voltage box arranged on the support are improved.

Description

Technical Field

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

[0002] The demand for lightweight and high space utilization in power battery packs for new energy vehicles is constantly increasing, and double-layer battery packs are being widely used due to their space integration advantages. Existing conventional double-layer battery packs all have a central longitudinal beam in the casing, and the second-layer bracket is directly bolted to the central longitudinal beam. The rigid connection on both sides is reliable, the assembly is efficient, and it is also convenient for later maintenance and traceability.

[0003] To reduce the weight of the battery pack and free up internal space, lightweight solutions in related technologies eliminate the central longitudinal beam of the enclosure. This results in the loss of the central load-bearing base of the second-layer support, affecting the stability of the high-voltage box on the upper side of the support. Utility Model Content

[0004] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a battery device and an electrical device including the battery device, which can improve the support stability of the bracket and the high-voltage box on the bracket.

[0005] In a first aspect, embodiments of this application provide a battery device, comprising: a housing defining a receiving cavity, wherein a plurality of structural beams are provided within the housing, the plurality of structural beams extending along a first direction and spaced apart along a second direction, the first direction and the second direction being horizontal directions and intersecting each other; a battery cell assembly disposed between two adjacent structural beams and comprising a plurality of battery cells stacked along the second direction; a pressure strip disposed on one side of the battery cell assembly in a third-party upward direction, the third-party direction being vertical, the pressure strip extending along the second direction and having its two ends fixed to two structural beams respectively; a bracket disposed on the housing and disposed on the side of the pressure strip opposite to the battery cell assembly in the third-party upward direction, the bracket being fixed to the pressure strip; and a high-voltage box disposed on the bracket and located on the side of the bracket opposite to the battery cell assembly in the third-party upward direction.

[0006] In the above-mentioned technical method, by fixing the bracket supporting the high-voltage box to the pressure strip, the pressure strip can serve as a support and load-bearing structure for the middle position of the bracket in the first direction, thereby improving the installation stability and reliability of the bracket and the high-voltage box mounted on the bracket, and improving the overall reliability and service life of the battery device.

[0007] In some embodiments, the pressure strip is detachably connected to the bracket.

[0008] In the above-mentioned technical approach, by making the pressure strip and the bracket detachably connected, it is beneficial to improve the assembly and disassembly efficiency between the pressure strip and the bracket, facilitate the maintenance and replacement of the pressure strip and / or the bracket, and reduce the maintenance cost of the battery device.

[0009] In some embodiments, the pressure strip is snap-fitted, fastened, and / or tied to the bracket.

[0010] In the above-mentioned technical methods, by making the pressure strip and the bracket snap-fit ​​connection, fasten connection and / or bind connection, it is beneficial to simplify the connection structure between the pressure strip and the bracket and improve the assembly efficiency.

[0011] In some embodiments, the battery device further includes a locking fastener disposed on the pressure bar, wherein the bracket is locked and fixed to the pressure bar by the locking fastener.

[0012] In the above-mentioned technical method, the bracket is locked and fixed to the pressure strip by the fastener, realizing the interlocking and fixing between the pressure strip and the bracket through the mechanical structure. This not only simplifies the assembly process between the bracket and the pressure strip, improves assembly efficiency, and facilitates large-scale mass production, but also reduces the risk of loosening between the bracket and the pressure strip, improves the reliability of the long-term connection between the bracket and the pressure strip, and enhances the overall stability of the battery device during long-term operation.

[0013] In some embodiments, the bracket is provided with a fixing hole, and the locking device includes a fixing stud and a locking nut. One end of the fixing stud is fixed to the pressure strip, and the other end passes through the fixing hole. The locking nut is sleeved on the fixing stud and is located on the side of the bracket facing away from the pressure strip in the third direction.

[0014] In the above-mentioned technical method, the locking device is fixed to the bracket by fixing studs and locking nuts, which achieves a rigid mechanical fixation between the pressure strip and the bracket with the same fixing strength as the transmission bolt connection. This improves the vibration and shear resistance of the connection position between the pressure strip and the bracket. At the same time, the locking nut fastening operation is compatible with the existing bolt tightening process, without the need to introduce new tools or complex worker training. The assembly efficiency is high, and the installation and disassembly between the bracket and the locking device can be achieved simply by turning the locking nut. This facilitates the installation and debugging of the bracket, facilitates the later maintenance of the battery device, and reduces the maintenance difficulty.

[0015] In some embodiments, the fixing stud is welded to the pressure strip.

[0016] In the above-mentioned technical method, welding the fixing stud to the pressure strip improves the reliability of the connection between the fixing stud and the pressure strip, and eliminates the need to design and process an additional connection structure with the fixing stud on the pressure strip, thereby improving production efficiency.

[0017] In some embodiments, the pressure strip includes a first tightening area, the bracket includes a second tightening area, and the locking element is formed as a tightening member that surrounds and locks the first tightening area and the second tightening area.

[0018] In the aforementioned technical approach, by forming the locking element as a fastening member, and tightening it around the pressure strip and the bracket, the pressure strip and the bracket are fixed together. This simplifies the assembly process, improves assembly efficiency, and enhances the reliability of the connection between the pressure strip and the bracket. Furthermore, it reduces the positional accuracy requirements between the pressure strip and the bracket, lowers assembly difficulty, and facilitates later maintenance of the battery device.

[0019] In some embodiments, the bracket is provided with a fixing hole, and the pressure strip is provided with a first through hole and a second through hole arranged at intervals. The second through hole and the fixing hole are arranged correspondingly in the third direction. The fastening member includes a belt body and a buckle. The buckle is connected to one end of the belt body and has a locking hole. The other end of the belt body passes through the first through hole, the second through hole and the fixing hole in sequence and is locked in the locking hole.

[0020] In the above-described technical method, by including a belt and a buckle in the fastening component, the fastening strip and the bracket can be fixed by simply tightening the belt, eliminating the need for specialized tools, thus shortening assembly time and improving assembly efficiency. Furthermore, the fastening component is a standard part, which helps reduce costs.

[0021] In some embodiments, the locking device includes a fixing part and a buckle, wherein the locking device is fixed to the pressure strip by the fixing part and snapped into the bracket by the buckle.

[0022] In the above-mentioned technical methods, by setting a buckle on the locking device and connecting it to the bracket through the buckle, it is beneficial to further improve assembly efficiency and reduce labor intensity.

[0023] In some embodiments, the fixing part has an assembly hole that extends through the fixing part in a first direction, and the fixing part is sleeved on the outside of the pressure strip and fixed to the pressure strip through the assembly hole.

[0024] In the above-mentioned technical method, the fixing part is sleeved on the outside of the pressure strip through the assembly hole and fixed to the pressure strip, which helps to improve the reliability of the fixed connection between the locking device and the pressure strip and reduce the risk of the locking device and the pressure strip becoming loose. In addition, the pressure strip can limit the fixing part in the first direction and the third direction through the assembly hole, reducing the probability of relative displacement between the locking device and the pressure strip in the first direction and the third direction.

[0025] In some embodiments, the locking fastener and the pressure strip are integrally connected by injection molding, or the fixing part includes: a first clamping body and a second clamping body, the first clamping body and the second clamping body are arranged on opposite sides of the pressure strip in the third direction, at least one end of the first clamping body and the second clamping body in the first direction is detachably connected, and the first clamping body and the second clamping body cooperate with each other to clamp and fix to the pressure strip.

[0026] In the aforementioned technical approach, the locking element is integrated with the pressure strip via injection molding, which improves the reliability of the connection between the locking element and the pressure strip, reduces the number of parts, and further enhances assembly efficiency. By including a first clamping body and a second clamping body that are arranged opposite to and cooperate to hold the pressure strip, the locking element can be easily fitted and fixed to the outside of the pressure strip, reducing assembly difficulty, even though the locking element and pressure strip are formed separately.

[0027] In some embodiments, the buckle is held at the edge of the bracket, and / or the bracket is provided with a locking hole, and the buckle engages in the locking hole.

[0028] In the above-mentioned technical method, the buckle is held in place on the edge of the bracket, eliminating the need to process slots or holes on the bracket. This helps to reduce the impact on the structural strength of the bracket. By holding the buckle in the hole, the hole can limit the buckle, which helps to reduce the risk of the buckle becoming loose from the bracket.

[0029] In some embodiments, the bracket is arranged at one end of the housing in a second direction, the two sides of the bracket in the first direction are fixed to the housing, one side of the bracket in the second direction is fixed to the structural beam, and the locking fastener is arranged on the other side of the bracket in the second direction.

[0030] In the above-mentioned technical method, by arranging the bracket at one end of the enclosure in the second direction, the high-voltage box is also arranged at one end of the enclosure in the second direction, which facilitates the connection of the high-voltage box with the plug interface at one end of the enclosure. The structure is compact. By arranging the fasteners on the other side of the bracket in the second direction, the structural beam and pressure strip (through the fasteners) can respectively support and fix the bracket on both sides in the second direction, thereby improving the reliability of the support and fixation of the bracket.

[0031] In some embodiments, the two ends of the pressure strip are connected to the middle position of the structural beam in the first direction, the bracket includes a first frame and a second frame that are separately arranged, the first frame and the second frame are arranged in the first direction, the first frame extends beyond the pressure strip at one end in the first direction toward the pressure strip, and the high-pressure box is disposed on the first frame.

[0032] In the above-mentioned technical method, by making the bracket include a first frame and a second frame that are separately set, the first frame and the second frame can be processed independently, which helps to reduce the difficulty of processing and forming the bracket. By extending one end of the first frame in the first direction beyond the pressure strip, it is convenient for the pressure strip to support and fix the end of the first frame away from the box frame beam through the fasteners, thereby improving the support and fixing effect on the first frame.

[0033] Secondly, embodiments of this application provide an electrical device, including a battery device according to the first aspect of this application.

[0034] In the above embodiments, by providing the battery device described in the first aspect, the overall performance of the power-consuming device is improved.

[0035] 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

[0036] Figure 1 This is a schematic diagram of a vehicle according to an embodiment of this application; Figure 2 This is an exploded view of a battery device according to an embodiment of this application; Figure 3 This is a structural schematic diagram of the battery device housing, bracket, locking fastener, and pressure strip according to Embodiment 1 of this application; Figure 4 yes Figure 3 A magnified view of point A, indicated by the center circle; Figure 5 yes Figure 3 The diagram shows the structure of the pressure bar and locking fastener; Figure 6 yes Figure 5 A magnified view of point B, indicated by the center circle; Figure 7 This is a schematic diagram of the battery device housing, bracket, locking fastener, and pressure strip according to Embodiment 2 of this application; Figure 8 yes Figure 7 A magnified view of point C, indicated by the center circle; Figure 9 yes Figure 7 The diagram shows the structure of the pressure bar and locking fastener; Figure 10 yes Figure 9 A magnified view of point D, indicated by the center circle; Figure 11 This is a structural schematic diagram of the battery device housing, bracket, locking fastener, and pressure strip according to Embodiment 3 of this application; Figure 12 yes Figure 11 A magnified view of point E, indicated by the center circle; Figure 13 yes Figure 11 The diagram shows the structure of the pressure bar and locking fastener; Figure 14 yes Figure 13 A magnified view of point F, shown in the middle circle.

[0037] Figure label: 1. Electrical appliances; 100. Battery assembly; 200. Controller; 300. Motor; 10. Box body; 11. Box main body; 12. Box lid; 20. Structural beams; 30. Battery cell modules; 40. Pressure strip; 42. Second perforation; 50. Bracket; 51. Fixing hole; 60. Locking components; 61. Fixing stud; 62. Locking nut; 63. Belt; 65. Fixing part; 66. Buckle. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[0044] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" 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 are not intended to 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.

[0045] 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.

[0046] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include one or more battery cells, and when there are multiple battery cells, they are connected in series, parallel, or mixed connections via a busbar.

[0047] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0048] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0049] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0050] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0051] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0052] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0053] As an example, the housing can be part of the vehicle's chassis structure. For instance, the housing's roof can be at least part of the vehicle's floor, or the housing's frame can be at least part of the vehicle's crossbeams and longitudinal beams.

[0054] In some embodiments, the battery device refers to an energy storage device, which includes a housing with a door on at least one side. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0055] The battery cells mentioned in the embodiments of this application may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to these. Battery cells may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to these shapes either. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and the embodiments of this application are not limited to these types either.

[0056] For example, a single battery cell typically includes a housing, a cell assembly, and an electrolyte. The housing is used to house the cell assembly and the electrolyte, and the housing has at least one positive electrode post and at least one negative electrode post. The cell assembly includes one or more electrode assemblies, which are formed by stacking or winding positive electrode sheets, negative electrode sheets, and separators.

[0057] The positive electrode generally includes a positive current collector and a positive active material layer. The positive active material layer is directly or indirectly coated on the positive current collector. The positive current collector without the positive active material layer protrudes from the positive current collector with the positive active material layer. The positive current collector without the positive active material layer serves as a positive electrode tab. Multiple positive electrode tabs are stacked together and form an electrical connection with the positive electrode post. For example, the multiple stacked positive electrode tabs can be directly soldered to the positive electrode post to form an electrical connection; or, the battery cell assembly can also include a positive electrode adapter piece. The multiple stacked positive electrode tabs are soldered to one end of the positive electrode adapter piece, and the other end of the positive electrode adapter piece is soldered to the positive electrode post, so that the positive electrode tabs and the positive electrode post form an electrical connection.

[0058] The negative electrode generally includes a negative current collector and a negative active material layer. The negative active material layer is directly or indirectly coated on the negative current collector. The negative current collector without the negative active material layer protrudes from the negative current collector with the negative active material layer. The negative current collector without the negative active material layer serves as a negative electrode tab. Multiple negative electrode tabs are stacked together and form an electrical connection with the negative electrode post. For example, the stacked negative electrode tabs can be directly welded to the negative electrode post to form an electrical connection; alternatively, the battery cell assembly may also include a negative electrode adapter piece. The stacked negative electrode tabs are welded to one end of the negative electrode adapter piece, and the other end of the negative electrode adapter piece is welded to the negative electrode post, so that the negative electrode tabs and the negative electrode post form an electrical connection. The material of the separator is not limited; for example, it can be polypropylene or polyethylene.

[0059] Meanwhile, individual battery cells primarily function by the movement of metal ions between the positive and negative electrode plates. Taking lithium-ion batteries as an example, the positive electrode current collector can be made of aluminum, and the positive electrode active material layer can be made of lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode current collector can be made of copper, and the negative electrode active material layer can be made of carbon or silicon, etc. During charging and discharging, Li+ ions repeatedly insert and extract between the two electrodes: during charging, Li+ ions extract from the positive electrode, pass through the electrolyte, and insert into the negative electrode, leaving the negative electrode in a lithium-rich state; the reverse occurs during discharging.

[0060] The technical solutions described in the embodiments of this application are applicable to various power devices that use battery devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0061] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, battery devices, as the power source, play an irreplaceable and crucial role. With the continuous improvement of the range and lightweight requirements of new energy vehicles, dual-layer power battery devices have been widely adopted due to their high space utilization and integration advantages. Conventional dual-layer battery devices have a central longitudinal beam inside the casing, and the second-layer bracket is directly locked to the central longitudinal beam with bolts. The rigid connection method on both sides ensures stable assembly, high structural strength, adaptability to vehicle vibration conditions, and facilitates later maintenance and quality traceability.

[0062] In the existing technology, in order to reduce the weight of the battery device and optimize the internal layout space, the existing lightweight battery device solution eliminates the middle longitudinal beam of the box. The second-layer bracket loses the middle support base. Only one side can be rigidly fixed to the side beam of the box with bolts, while the other side has no corresponding load-bearing structure, which seriously affects the installation stability of the bracket and high-voltage box.

[0063] Based on the above considerations, in order to improve the installation stability of the bracket and high-voltage box, this application designs a battery device. The battery device includes a housing, a structural beam, a pressure strip, a battery cell assembly, a bracket, and a high-voltage box. The bracket is arranged on the side of the pressure strip facing away from the battery cell assembly in the third direction. The bracket is fixed to the pressure strip, and the high-voltage box is mounted on the bracket. Thus, the pressure strip can serve as a support and load-bearing structure for the middle position of the bracket in the first direction, improving the installation stability and reliability of the bracket and the high-voltage box mounted on the bracket, and improving the overall reliability and service life of the battery device.

[0064] This application provides an electrical device that uses the battery device disclosed herein as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0065] For ease of explanation, the following embodiments use a vehicle as an example to describe in detail the structure of the electrical device 1, the battery device 100, and the battery cell of this application.

[0066] Please refer to Figure 1 , Figure 1The electrical device 1 provided in some embodiments of this application is a schematic diagram of a vehicle structure. The vehicle 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. The vehicle is equipped with a battery device 100, which can be located at the bottom, front, or rear of the vehicle. The battery device 100 can be used to supply power to the vehicle; for example, the battery device 100 can serve as the vehicle's operating power source. The vehicle 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 starting, navigation, and driving the vehicle. In some embodiments of this application, the battery device 100 can not only serve as the vehicle's operating power source but also as the vehicle's driving power source, replacing or partially replacing gasoline or natural gas to provide driving power to the vehicle.

[0067] Please refer to Figure 2 , Figure 2 This is an exploded view of the structure of a battery device 100 provided in some embodiments of this application. The battery device 100 includes a housing 10 and a plurality of battery cells. The housing 10 provides assembly space for the battery cells, which are housed within the housing 10.

[0068] The following is for reference. Figures 2-14 A battery device 100 according to an embodiment of the first aspect of this application is described.

[0069] like Figures 2-4 As shown in the figure, this application provides a battery device 100, including: a housing 10, a structural beam 20, a battery cell assembly 30, a pressure strip 40, a bracket 50, and a high-voltage box.

[0070] Specifically, the housing 10 defines a receiving cavity, and the housing 10 is provided with a plurality of structural beams 20, which are arranged along a first direction (e.g., Figure 3 The F1 direction shown extends and in the second direction (e.g., the direction shown) Figure 3 The battery cells are arranged at intervals along the F2 direction shown in the diagram. The first and second directions are both horizontal and intersect each other. The battery cell assembly 30 is located between two adjacent structural beams 20 and includes multiple battery cells stacked along the second direction. The pressure strip 40 is arranged on the battery cell assembly 30 in a third direction (e.g., ...). Figure 3 On one side of the F3 direction shown, the third direction is vertical, the pressure strip 40 extends along the second direction, and its two ends are respectively fixed to the two structural beams 20; the bracket 50 is provided on the box 10 and arranged on the pressure strip 40 in the third direction (e.g., in the F3 direction). Figure 3 On the side opposite to the battery cell assembly 30 in the F3 direction shown, the bracket 50 is fixed to the pressure strip 40; the high voltage box is disposed on the bracket 50 and located on the side of the bracket 50 opposite to the battery cell assembly 30 in the third direction.

[0071] In some examples, the housing 10 may include a main body 11 and a cover 12. The main body 11 defines a top-open receiving cavity, and the cover 12 seals the top of the main body 11. The main body 11 may include a frame beam and a bottom plate. The frame beam is rectangular, the bottom plate seals the bottom of the frame beam, and the cover 12 seals the top of the frame beam. Two, three, four, or more structural beams 20 may be provided inside the housing 10. These structural beams 20 are arranged in parallel and spaced apart, and are used to limit the expansion of the battery cells in the battery cell assembly 30.

[0072] In some examples, the box 10 does not have an intermediate longitudinal beam extending in the second direction.

[0073] In some examples, the number of battery cell assemblies 30 can be one or more. For example, two, three, four, five, six or more battery cell assemblies 30 can be installed inside the housing 10, and the multiple battery cell assemblies 30 are arranged sequentially along the length and / or width direction of the housing 10. In some examples, the number of battery cells in each battery cell assembly 30 can be ten, fifteen, twenty, thirty, forty, fifty, sixty or more, and the multiple battery cells are arranged in a stacked manner.

[0074] In some examples, the pressure strip 40 is a long, rod-shaped structure extending along the second direction; for example, the pressure strip 40 can be a steel strip. In some examples, there can be multiple pressure strips 40, all extending along the second direction and spaced apart in the first direction, with both ends of the multiple pressure strips 40 connected to the structural beams 20. Specifically, the two ends of the multiple pressure strips 40 can be connected to the two outermost structural beams 20 in the second direction, respectively. By providing the pressure strips 40, the anti-expansion effect on the battery cell assembly 30 is improved.

[0075] In some examples, the bracket 50 is arranged inside the housing 10, which divides the space inside the housing 10 into an upper space and a lower space. The battery cell assembly 30 is arranged in the lower space located below the bracket 50, and the high voltage box is arranged in the upper space located above the bracket 50 and supported on the bracket 50.

[0076] In some examples, the bracket 50 is made of insulating material, such as plastic, which helps to improve the insulation performance between the high-voltage box and the battery cell assembly 30. In some examples, the bracket 50 is a frame structure extending along a first direction, with both ends of the bracket 50 fixed to the frame beams on both sides of the housing 10 in the first direction, for example, the two ends of the bracket 50 in the first direction can be fastened to the housing 10 with bolts.

[0077] In some examples, the bracket 50 is disposed on and fixed to the housing 10. For example, the bracket 50 is a plate-shaped frame extending along a first direction and a second direction. The first part of the periphery of the bracket 50 is directly fixed to the housing 10 by fasteners, and the second part of the periphery of the bracket 50 is fixed to the structural beam 20 by fasteners, thereby achieving indirect fixation to the housing 10 through the structural beam 20.

[0078] In some examples, the bracket 50 and the pressure strip 40 can be fixed by a detachable connection or by a non-detachable connection. For example, the bracket 50 and the pressure strip 40 can be locked and fixed by means of adhesive, snap-fit, riveting, threaded connection, bolt connection and / or binding.

[0079] It should be noted that when there is no intermediate longitudinal beam inside the housing 10, there is no support or load-bearing structure in the middle of the bracket 50 when it is installed. However, in this embodiment, when the bracket 50 is installed, it is not only fixed to the housing 10, but also fixed to the pressure strip 40. Thus, the pressure strip 40 achieves the fixation and support of the bracket 50 in the middle position in the first direction except for the two ends, increasing the number of fixing points of the bracket 50, improving the stability and reliability of the fixing support of the bracket 50, improving the stability and reliability of the support of the high voltage box, and improving the stability of the battery device operation.

[0080] In the above technical solution, by fixing the bracket 50 supporting the high voltage box to the pressure strip 40, the pressure strip 40 can serve as a support and load-bearing structure for the bracket 50 at the middle position in the first direction, thereby improving the installation stability and reliability of the bracket 50 and the high voltage box mounted on the bracket 50, and improving the overall reliability and service life of the battery device 100.

[0081] In some embodiments of this application, the pressure strip 40 is detachably connected to the bracket 50.

[0082] For example, the pressure strip 40 is connected to the bracket 50 by snap-fit, bolt, thread and / or binding.

[0083] In the above technical solution, by making the pressure strip 40 and the bracket 50 detachably connected, it is beneficial to improve the assembly and disassembly efficiency between the pressure strip 40 and the bracket 50, facilitate the maintenance and replacement of the pressure strip 40 and the bracket 50, and reduce the maintenance cost of the battery device 100.

[0084] In some embodiments of this application, the pressure strip 40 is snap-fitted, fastened, and / or tied to the bracket 50.

[0085] In some examples, the pressure strip 40 has a first retaining part, and the bracket 50 has a second retaining part. The first retaining part and the second retaining part engage. The first retaining part can be a buckle, hook, protrusion, block, hole, and / or groove. The second retaining part is a buckle, hook, protrusion, block, hole, and / or groove that is adapted to engage with the first retaining part.

[0086] In some examples, the pressure strip 40 is provided with at least one first fastening hole, and the bracket 50 is provided with at least one second fastening hole. The first fastening hole and the second fastening hole are provided correspondingly, and bolts or screws pass through the first fastening hole and the second fastening hole to achieve a fastening connection between the pressure strip 40 and the bracket 50.

[0087] In some examples, the pressure strip 40 has a first binding area and the bracket 50 has a second binding area. The binding member is tightened after wrapping around the first binding area and the second binding area to achieve binding and fixation between the pressure strip 40 and the bracket 50.

[0088] In the above technical solution, by making the pressure strip 40 and the bracket 50 snap-fit, fasten and / or bind them together, the connection structure between the pressure strip 40 and the bracket 50 is simplified and the assembly efficiency is improved.

[0089] In some embodiments of this application, the battery device 100 further includes a locking fastener 60, which is disposed on the pressure strip 40, and the bracket 50 is locked and fixed to the pressure strip 40 by the locking fastener 60.

[0090] In some examples, the locking element 60 is fixed to the pressure strip 40 by welding, or by injection molding. The locking element 60 can also be detachably connected to the pressure strip 40 for fixation. In some examples, the locking element 60 and the bracket 50 can be locked together by snap-fitting, riveting, threaded connection, bolting, and / or binding.

[0091] In this embodiment, the locking fastener 60 is an additional mechanical component structure. On the mounting bracket 50, the bracket 50 is not only fixed to the housing 10, but also locked and fixed to the pressure strip 40 by the locking fastener 60. Thus, the mechanical connection between the bracket 50 and the pressure strip 40 is realized, and the fixing points of the bracket 50 are increased. The pressure strip 40 is used to support and fix the bracket 50, thereby improving the fixing reliability of the bracket 50.

[0092] Compared to the passive attachment relationship between the bracket 50 and the pressure strip 40 through adhesive bonding, the above technical solution, by setting a locking fastener 60 and locking the bracket 50 to the pressure strip 40 through the locking fastener 60, achieves mechanical interlocking and fixation between the pressure strip 40 and the bracket 50. This not only simplifies the assembly process between the bracket 50 and the pressure strip 40, improves assembly efficiency, and facilitates large-scale mass production, but also reduces the risk of loosening between the bracket 50 and the pressure strip 40, improves the reliability of the long-term connection between the bracket 50 and the pressure strip 40, and enhances the overall stability of the battery device 100 during long-term operation.

[0093] In some embodiments of this application, such as Figure 3 and Figure 4 As shown, the locking fastener 60 is detachably connected to the pressure bar 40 and / or the bracket 50.

[0094] In some examples, the locking element 60 is detachably connected to the pressure strip 40, for example, by snap-fit, bolt, thread, and / or binding. In some examples, the locking element 60 is also snap-fit, bolt, thread, and / or binding connected to the bracket 50.

[0095] In the above technical solution, by making the locking fastener 60 detachably connected to the pressure strip 40 and / or the bracket 50, it is beneficial to improve the assembly and disassembly efficiency between the locking fastener 60 and the pressure strip 40 and / or the bracket 50, facilitate the maintenance and replacement of the locking fastener 60, the pressure strip 40 and / or the bracket 50, and reduce the maintenance cost of the battery device 100.

[0096] In some embodiments of this application, such as Figure 3 and Figure 4 As shown, the locking fastener 60 is snap-fitted, fastened, and / or bound to the bracket 50.

[0097] In some examples, the locking fastener 60 has a first retaining part, and the bracket 50 has a second retaining part. The first retaining part and the second retaining part engage. The first retaining part can be a buckle, hook, protrusion, block, hole, and / or groove. The second retaining part is a buckle, hook, protrusion, block, hole, and / or groove that is adapted to engage with the first retaining part.

[0098] In some examples, the fastener 60 has at least one first fastening hole, and the bracket 50 has at least one second fastening hole. The first fastening hole and the second fastening hole are provided correspondingly, and the fastener 60 is fastened to the bracket 50 by bolts or screws passing through the first fastening hole and the second fastening hole.

[0099] In some examples, the locking device 60 has a first binding area and the bracket 50 has a second binding area. The locking device 60 is tightened by wrapping around the first binding area and the second binding area with a tightening strap to achieve binding to the bracket 50.

[0100] In the above technical solution, by making the locking fastener 60 and the bracket 50 snap-fit, fasten, and / or bind them together, the connection structure between the locking fastener 60 and the bracket 50 is simplified, the assembly efficiency is improved, and a reliable connection between the locking fastener 60 and the bracket 50 is achieved.

[0101] In some embodiments of this application, such as Figures 4-6 As shown, the bracket 50 is provided with a fixing hole 51, and the locking device 60 includes a fixing stud 61 and a locking nut 62. One end of the fixing stud 61 is fixed to the pressure strip 40, and the other end passes through the fixing hole 51. The locking nut 62 is sleeved on the fixing stud 61 and is located on the side of the bracket 50 facing away from the pressure strip 40 in the third direction.

[0102] In some examples, the bracket 50 includes a support plate perpendicular to a third direction, which is the vertical direction. The high-voltage box is supported on the upper side of the support plate. The support plate has a fixing hole 51 extending through the support plate in the vertical direction. The pressure strip 40 is arranged on the side of the support plate facing the battery cell assembly 30 in the third direction, i.e., on the lower side of the support plate. The fixing stud 61 extends vertically, and the lower end of the fixing stud 61 is fixed to the pressure strip 40, for example, by welding or threading the lower end of the fixing stud 61 to the pressure strip 40, or by locking the lower end of the fixing stud 61 to the pressure strip 40 with a nut or screw head. The upper end of the fixing stud 61 extends through the fixing hole 51 to the upper side of the support plate. The locking nut 62 is arranged on the upper side of the support plate and is threaded onto the fixing stud 61. By tightening the locking nut 62, the locking device 60 and the pressure strip 40 can be fixed.

[0103] In the above technical solution, the locking device 60 is fixed to the bracket 50 by the fixing stud 61 and the locking nut 62, which achieves a rigid mechanical fixation between the pressure strip 40 and the bracket 50 with the same fixing strength as the transmission bolt connection. This improves the vibration resistance and shear resistance of the connection position between the pressure strip 40 and the bracket 50. At the same time, the locking operation of the locking nut 62 is compatible with the existing bolt tightening process, without the need to introduce new tools or complex worker training. The assembly efficiency is high, and the installation and disassembly between the bracket 50 and the locking device 60 can be achieved simply by turning the locking nut 62. This facilitates the installation and debugging of the bracket 50, and facilitates the later maintenance of the battery device 100, reducing the maintenance difficulty.

[0104] In some embodiments of this application, such as Figures 4-6 As shown, the fixing stud 61 is welded to the pressure strip 40.

[0105] For example, the lower end of the fixing stud 61 is welded to the pressure strip 40 by argon arc welding.

[0106] In the above technical solution, by welding the fixing stud 61 to the pressure strip 40, the reliability of the connection between the fixing stud 61 and the pressure strip 40 is improved, and there is no need to design and process an additional connection structure with the fixing stud 61 on the pressure strip 40, thereby improving production efficiency.

[0107] In some examples, the number of fixing studs 61 can be one or more. Multiple fixing studs 61 can be arranged at intervals along the length of the pressure strip 40, with locking nuts 62 corresponding to each fixing stud 61. Using multiple fixing studs 61 helps to further improve the reliability of the connection between the pressure strip 40 and the bracket 50.

[0108] In some embodiments of this application, such as Figures 7-10 As shown, the pressure strip 40 includes a first tightening area, the bracket 50 includes a second tightening area, and the locking fastener 60 is formed as a tightening member that surrounds and tightens the first and second tightening areas.

[0109] In some examples, the first tightening area can be a section of the pressure strip 40 along a first direction, and the tightening member, when surrounding the first and second tightening areas, can be along the width direction of the pressure strip 40 (e.g., Figure 7 The F1 direction shown may be around the first tightening area, or it may be along the length of the pressure strip 40 (e.g., the direction shown). Figure 7 The F2 direction shown in the diagram surrounds the first tightening zone.

[0110] In some examples, the second tightening area can be a column protruding from the bracket 50, and the tightening member can surround the periphery of the column. The bracket 50 can also be provided with fixing holes 51. When there is one fixing hole 51, the second tightening area is the area between the hole wall of the fixing hole 51 and the edge of the bracket 50. When there are two fixing holes 51, the second tightening area is the area between the two fixing holes 51.

[0111] In some examples, the fastening element can be a structure such as a rope, strap, cable tie, or clamp.

[0112] In the above technical solution, by forming the locking fastener 60 as a tightening member, and tightening it around the pressure strip 40 and the bracket 50, the fixation between the pressure strip 40 and the bracket 50 is achieved. This simplifies the assembly process, improves assembly efficiency, and enhances the connection reliability between the pressure strip 40 and the bracket 50. Furthermore, it helps reduce the positional accuracy requirements between the pressure strip 40 and the bracket 50, reduces assembly difficulty, and facilitates later maintenance of the battery device 100.

[0113] In some embodiments of this application, such as Figures 7-9As shown, the bracket 50 is provided with a fixing hole 51, and the pressure strip 40 is provided with a first through hole and a second through hole 42 arranged at intervals. The second through hole 42 and the fixing hole 51 are arranged correspondingly in the third direction. The fastening member includes a belt body 63 and a buckle. The buckle is connected to one end of the belt body 63 and has a locking hole. The other end of the belt body 63 passes through the first through hole, the second through hole 42 and the fixing hole 51 in sequence and is locked in the locking hole.

[0114] For example, the pressure strip 40 is provided with a first through hole and a second through hole 42 arranged at intervals along the second direction, and the bracket 50 is provided with a fixing hole 51 that is directly opposite the second through hole 42 in the vertical direction. The fastening member is a pull strap, which includes a buckle and a strap body 63. The strap body 63 is provided with a toothed self-locking structure. During the assembly process, the fixing hole 51 on the bracket 50 is first aligned with the second through hole 42 on the pressure strip 40. Then, the strap body 63 of the fastening member (cable strap) is passed through the first through hole, the second through hole 42, the fixing hole 51 and the locking hole and tightened. Finally, the buckle and the self-locking structure on the strap body 63 are used to lock and bind the strap, reducing the risk of the pressure strip 40 and the bracket 50 becoming loose.

[0115] In the above technical solution, by making the fastening component include a belt body 63 and a buckle, when the pressure strip 40 is fixed to the bracket 50, the fixing of the pressure strip 40 and the bracket 50 can be completed by tightening the belt body 63, without the need for special operating tools, thus shortening the assembly time and improving the assembly efficiency. In addition, the fastening component is a standard part, which helps to reduce costs.

[0116] In some embodiments of this application, such as Figures 11-14 As shown, the locking device 60 includes a fixing part 65 and a buckle 66. The locking device 60 is fixed to the pressure strip 40 by the fixing part 65 and is engaged with the bracket 50 by the buckle 66.

[0117] In some examples, the fixing part 65 is the main structure of the locking part 60. The fixing part 65 can be formed into a square block structure. The buckle 66 is provided on the fixing part 65. There can be multiple buckles 66. Multiple buckles 66 can be spaced apart along the first direction and / or the second direction.

[0118] In some examples, the fixing part 65 and the pressure strip 40 can be fastened together by fasteners, snap-fit ​​connection or riveting connection. The fixing part 65 can also be sleeved on the pressure strip 40 to achieve fixation with the pressure strip 40.

[0119] In the above technical solution, by setting a buckle 66 on the locking fastener 60 and connecting it to the bracket 50 through the buckle 66, it is beneficial to further improve assembly efficiency and reduce labor intensity.

[0120] In some embodiments of this application, such as Figures 11-14As shown, the fixing part 65 has an assembly hole that extends through the fixing part 65 in the first direction. The fixing part 65 is sleeved on the outside of the pressure strip 40 through the assembly hole and fixed to the pressure strip 40.

[0121] For example, the fixing part 65 can be formed as a cuboid block structure, and the fixing part 65 has an assembly hole that matches the cross-sectional shape of the pressure strip 40. The buckle 66 can be formed on the upper surface of the fixing part 65 and extend upward.

[0122] In the above technical solution, the fixing part 65 is sleeved on the outside of the pressure strip 40 through the assembly hole and fixed to the pressure strip 40, which helps to improve the reliability of the fixed connection between the locking part 60 and the pressure strip 40 and reduce the risk of the locking part 60 and the pressure strip 40 becoming loose. In addition, the pressure strip 40 can limit the fixing part 65 in the first direction and the third direction through the assembly hole, reducing the probability of the locking part 60 and the pressure strip 40 being relatively displaced in the first direction and the third direction.

[0123] In some embodiments of this application, such as Figures 11-14 As shown, the locking fastener 60 and the pressure strip 40 are connected as one piece by injection molding, or the fixing part 65 includes: a first clamping body and a second clamping body, the first clamping body and the second clamping body are arranged on opposite sides of the pressure strip 40 in a third direction, at least one end of the first clamping body and the second clamping body in the first direction are detachably connected, and the first clamping body and the second clamping body cooperate with each other to clamp and fix to the pressure strip 40.

[0124] In some examples, the locking element 60 is made of plastic, which has the functions of insulation and cushioning. Making the locking element 60 a plastic element helps to improve the insulation performance between the pressure strip 40 and the bracket 50, and also helps to reduce the vibration transmission between the pressure strip 40 and the bracket 50.

[0125] In some examples, the fixing part 65 includes a first clamping body and a second clamping body. Both the first clamping body and the second clamping body can be plates arranged perpendicular to a third direction. The two ends of the first clamping body and the second clamping body are snap-fitted together or connected by fasteners in the first direction. Alternatively, one end of the first clamping body and one end of the second clamping body in the first direction are rotatably connected, and the other end of the first clamping body and the other end of the second clamping body in the first direction are snap-fitted together or connected by fasteners. The first clamping body and the second clamping body cooperate to define an assembly hole, through which the pressure strip 40 is clamped between the first clamping body and the second clamping body, achieving a fixed connection with the pressure strip 40.

[0126] In the above technical solution, the locking fastener 60 is integrally connected to the pressure strip 40 through injection molding, which improves the connection reliability between the locking fastener 60 and the pressure strip 40, reduces the number of parts, and further improves assembly efficiency. By setting the locking fastener 60 to include a first clamping body and a second clamping body that are arranged opposite to and cooperate to clamp the pressure strip 40, it is possible to easily fit and fix the locking fastener 60 to the outside of the pressure strip 40 while making the locking fastener 60 and the pressure strip 40 separately, thus reducing assembly difficulty.

[0127] In some embodiments of this application, such as Figures 11-12 As shown, the buckle 66 is held in place by the edge of the bracket 50, and / or the bracket 50 has a locking hole in which the buckle 66 is fitted.

[0128] For example, there can be multiple latches 66, spaced apart. These latches 66 can all be engaged with the edge of the bracket 50, or they can all be engaged within the latch holes. Some latches 66 can be engaged with the edge of the bracket 50, while others are engaged within the latch holes. In some examples, multiple latches 66 can be engaged within the same latch hole, spaced apart circumferentially around the hole. At least two latches 66 are engaged with opposite sides of the latch hole to improve the reliability of the engagement and reduce the risk of the latches 66 becoming detached from the latch hole.

[0129] In the above technical solution, the buckle 66 is held on the edge of the bracket 50 without the need to process the slot or hole on the bracket 50, which helps to reduce the impact on the structural strength of the bracket 50. By holding the buckle 66 in the hole, the hole can limit the buckle 66, which helps to reduce the risk of the buckle 66 becoming loose from the bracket 50.

[0130] In some embodiments of this application, such as Figure 11 As shown, the bracket 50 is arranged at one end of the housing 10 in the second direction, the two sides of the bracket 50 in the first direction are fixed to the housing 10, one side of the bracket 50 in the second direction is fixed to the structural beam 20, and the fastener 60 is arranged on the other side of the bracket 50 in the second direction.

[0131] In the above technical solution, by arranging the bracket 50 at one end of the enclosure 10 in the second direction, the high voltage box can also be arranged at one end of the enclosure 10 in the second direction, which facilitates the connection of the high voltage box with the plug interface at one end of the enclosure 10. The structure is compact. By arranging the fastener 60 on the other side of the bracket 50 in the second direction, the structural beam 20 and the pressure strip 40 (through the fastener 60) can respectively support and fix the bracket 50 on both sides in the second direction, thereby improving the reliability of the support and fixation of the bracket 50.

[0132] In some embodiments of this application, such as Figure 11 As shown, the two ends of the pressure strip 40 are connected to the middle position of the structural beam 20 in the first direction. The bracket 50 includes a first frame and a second frame that are separately arranged. The first frame and the second frame are arranged in the first direction. The end of the first frame facing the pressure strip 40 in the first direction extends beyond the pressure strip 40. The high-pressure box is arranged on the first frame.

[0133] For example Figure 11 As shown, the first direction is the left-right direction, and the second direction is the front-back direction. The bracket 50 is arranged at the front end of the housing 10. The bracket 50 includes a first frame and a second frame arranged in the first direction. The first frame and the second frame are arranged side by side in the left-right direction. The first frame is arranged on the right side of the housing 10, and the second frame is arranged on the left side of the housing 10. The high-voltage box is supported on the first frame. The right edge of the first frame is connected to the frame beam of the housing 10 by fasteners. The front edge of the first frame is connected to the structural beam 20 at the front of the housing 10 by fasteners. The left end of the first frame extends to the left beyond the pressure strip 40 and is located above the pressure strip 40. The rear edge of the left end of the first frame is fixedly connected to the pressure strip 40 by fasteners 60. The right end of the second frame extends to the right beyond the pressure strip 40 and is located above the pressure strip 40.

[0134] In the above technical solution, by making the bracket 50 include a first frame and a second frame that are separately set, the first frame and the second frame can be processed independently, which helps to reduce the processing and forming difficulty of the bracket 50. By extending one end of the first frame in the first direction beyond the pressure strip 40, the pressure strip 40 can support and fix the end of the first frame away from the frame beam of the box body 10 through the fastener 60, thereby improving the support and fixing effect of the first frame.

[0135] Secondly, embodiments of this application also provide an electrical device 1, including the battery device 100 of any of the above embodiments.

[0136] In the above technical solution, the overall performance of the power-consuming device 1 is improved by incorporating the battery device 100.

[0137] The following will refer to Figures 2-14 The present application describes a battery device 100 according to three specific embodiments.

[0138] Example 1, refer to Figure 2 and Figure 3The battery assembly 100 includes a housing 10, a structural beam 20, a battery cell assembly 30, a pressure strip 40, a bracket 50, a locking fastener 60, and a high-voltage box. The housing 10 includes a main body 11 and a cover 12. The main body 11 defines a top-open receiving cavity, and the cover 12 covers the top of the main body 11. The structural beam 20, battery cell assembly 30, pressure strip 40, locking fastener 60, and high-voltage box are all located within the receiving cavity.

[0139] There are three structural beams 20, extending along the width of the housing 10 and spaced apart along its length. Two of the structural beams 20 are positioned near the ends of the housing 10 along its length, while the third structural beam 20 is positioned at the middle of the housing 10 along its length. Multiple battery cell modules 30 are arranged between adjacent structural beams 20. Multiple pressure strips 40 are arranged on the upper side of the battery cell modules 30, extending along the length of the housing 10 and spaced apart along its width. One pressure strip 40 is positioned at the middle of the housing 10 along its width, and its two ends are fixedly connected to two structural beams 20 located at the front and rear ends of the housing 10, respectively. The pressure strip 40 is a steel strip extending along the length of the housing 10.

[0140] The bracket 50 is arranged on the upper side of the battery cell assembly 30 and the pressure strip 40, and is arranged at one end of the length direction of the housing 10 (such as the front end of the housing 10). The bracket 50 includes a first frame and a second frame arranged side by side in the width direction of the housing 10. The high voltage box is supported on the first frame. The front edges of the first frame and the second frame are fastened to the structural beam 20 located at the front end of the housing 10. The right edge of the first frame and the left edge of the second frame are fastened to the left and right sides of the housing 10. The left edge of the first frame extends to the left beyond the pressure strip 40 located in the middle of the housing 10. The rear edge of the left end of the first frame is fixed to the pressure strip 40 by a fastener 60.

[0141] like Figures 3-6 As shown, the locking device 60 includes a fixing stud 61 and a locking nut 62. The fixing stud 61 is a high-strength stud and is welded to the preset position of the pressure strip 40. The bracket 50 is provided with a fixing hole 51. When assembling the battery device 100, first fix both ends of the pressure strip 40 to the structural beam 20 of the housing 10, then fit the fixing hole 51 of the bracket 50 onto the fixing stud 61, and finally use the locking nut 62 to tighten and lock it from the top of the bracket 50 onto the upper end of the fixing stud 61.

[0142] In this embodiment, the battery device 100, pressure bar 40 and bracket 50 achieve the same level of rigid mechanical fixation as traditional bolt connection, with high connection strength and excellent vibration and shear resistance; and the locking operation of locking nut 62 is fully compatible with existing bolt tightening process, without the need to introduce new tools or complex worker training, with good process inheritance, and also facilitates the installation, debugging and later maintenance of bracket 50.

[0143] Example 2, as Figures 7-10 As shown, the structure of this embodiment is largely the same as that of Embodiment 1, with identical components using the same reference numerals. The only difference is that the locking device 60 in Embodiment 1 includes a fixing stud 61 and a locking nut 62, while the locking device 60 in this embodiment is a fastening member including a strap 63 and a buckle. The buckle has a locking hole, and the strap 63 is a high-strength plastic or metal cable tie with a self-locking structure, with one end of the strap 63 connected to the buckle. The locking device 60 can be integrated onto the pressure strip 40, or the pressure strip 40 can have a first through hole and a second through hole 42 spaced apart, with the second through hole 42 directly opposite the fixing hole 51 on the bracket 50.

[0144] During the assembly of the battery device 100, first fix both ends of the pressure strip 40 to the structural beam 20 of the housing 10, so that the fixing hole 51 on the bracket 50 is vertically aligned with the second through hole 42 on the pressure strip 40. Then, pass the belt 63 through the fixing hole 51 of the bracket 50, the first through hole and the second through hole 42 on the belt 63, and finally through the locking hole on the buckle to tighten it. The self-locking mechanism on the belt 63 achieves one-time tightening and mechanical interlocking.

[0145] In this embodiment, the battery device 100 fixes the pressure strip 40 and the bracket 50 by tightening the strap 63, without the need for tightening tools, which can greatly shorten the operation time and make the assembly operation extremely quick. Moreover, the initial position accuracy requirements of the fastening component for the bracket 50 and the pressure strip 40 are relatively relaxed, and the gap can be automatically corrected and eliminated by the tightening process of the cable tie, which is highly adaptable. In addition, the cable tie is a mature standard part with controllable cost and low cost.

[0146] Example 3, as Figures 11-14 As shown, the structure of this embodiment is roughly the same as that of Embodiment 1, with the same reference numerals used for the same components. The only difference is that the locking device 60 in Embodiment 1 includes a fixing stud 61 and a locking nut 62, while the locking device 60 in this Embodiment 2 is a plastic part and includes a fixing part 65 and a buckle 66. The fixing part 65 is a square block and has an assembly hole that matches the cross-sectional shape of the pressure strip 40. It is fitted and fixed to the pressure strip 40 through the assembly hole. The buckle 66 is provided on the fixing part 65 and is an elastic buckle, such as a cantilever beam buckle or a spherical buckle.

[0147] When assembling the battery device 100, first assemble and fix the locking fastener 60 to the designated position of the pressure strip 40. When installing the bracket 50, simply align the clip hole on the bracket 50 or the edge of the bracket 50 and press it down. The elastic deformation of the elastic buckle 66 will make the buckle 66 and the bracket 50 reliably fasten with a "click".

[0148] The battery device 100 in this embodiment can achieve true "one-second snap-in," resulting in extremely high assembly efficiency and clear feedback upon successful assembly, providing a superior installation experience. It completely eliminates the need for tightening or bundling, reducing the labor intensity for workers. In addition, the plastic locking fastener 60 provides a certain degree of cushioning and vibration reduction between the pressure strip 40 and the bracket 50, and also provides electrical insulation.

[0149] According to the battery device 100 of the above three embodiments of this application, the processes of applying adhesive and drying are completely eliminated, thus eliminating quality variations and waiting time related to adhesive application; the bracket 50 is mechanically connected to the steel strip, which facilitates automated and standardized assembly, significantly improving production cycle time and consistency, and meeting mass production requirements; moreover, mechanical locking fundamentally reduces the risk of connection loosening caused by adhesive aging and failure, improving connection reliability; the mechanical fixing method can be precisely controlled and detected, making the connection strength quantifiable, ensuring stable, reliable, and verifiable connection strength. In addition, it also saves on adhesive materials, adhesive application equipment, labor, and quality control costs, resulting in better overall manufacturing costs and reducing hidden costs caused by potential after-sales risks.

[0150] The battery device 100 in this embodiment transforms the complex and weak connection between the bracket 50 and the pressure strip 40 in a scenario without longitudinal beams into a simple and strong connection. The assembly method is mass-producible, and the connection strength can achieve long-term reliability.

[0151] 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: Box (10), the box (10) defines a receiving cavity, the box (10) is provided with a plurality of structural beams (20), the plurality of structural beams (20) extend along a first direction and are spaced apart in a second direction, the first direction and the second direction are both directions in the horizontal plane and are intersecting; A battery cell assembly (30) is disposed between two adjacent structural beams (20) and includes a plurality of battery cells stacked along the second direction; Pressure strip (40), the pressure strip (40) is arranged on one side of the battery cell assembly (30) in the third direction, the third direction being the up and down direction, the pressure strip (40) extends along the second direction, and both ends are fixed to the two structural beams (20); A bracket (50) is provided on the housing (10) and arranged on the side of the pressure strip (40) facing away from the battery cell assembly (30) in the third direction, and the bracket is fixed to the pressure strip; A high-voltage box is disposed on the bracket (50) and located on the side of the bracket (50) facing away from the battery cell assembly (30) in the third direction.

2. The battery device according to claim 1, characterized in that, The pressure strip (40) is detachably connected to the bracket (50).

3. The battery device according to claim 1, characterized in that, The pressure strip (40) is snapped, fastened and / or tied to the bracket (50).

4. The battery device according to claim 1, characterized in that, The battery device further includes a locking device (60), which is disposed on the pressure strip (40), and the bracket (50) is locked and fixed to the pressure strip (40) by the locking device (60).

5. The battery device according to claim 4, characterized in that, The bracket (50) is provided with a fixing hole (51), and the locking device (60) includes a fixing stud (61) and a locking nut (62). One end of the fixing stud (61) is fixed to the pressure strip (40), and the other end passes through the fixing hole (51). The locking nut (62) is sleeved on the fixing stud (61) and is located on the side of the bracket (50) facing away from the pressure strip (40) in the third direction.

6. The battery device according to claim 5, characterized in that, The fixing stud (61) is welded to the pressure strip (40).

7. The battery device according to claim 4, characterized in that, The pressure strip (40) includes a first tightening area, the bracket (50) includes a second tightening area, and the locking element (60) is formed as a tightening member that surrounds and locks the first tightening area and the second tightening area.

8. The battery device according to claim 7, characterized in that, The bracket (50) is provided with a fixing hole (51), and the pressure strip (40) is provided with a first through hole and a second through hole (42) arranged at intervals. The second through hole (42) and the fixing hole (51) are respectively arranged in the third direction. The fastening member includes a belt body (63) and a buckle. The buckle is connected to one end of the belt body (63) and has a locking hole. The other end of the belt body (63) passes through the first through hole, the second through hole (42) and the fixing hole (51) in sequence and is locked in the locking hole.

9. The battery device according to claim 4, characterized in that, The locking device (60) includes a fixing part (65) and a buckle (66). The locking device (60) is fixed to the pressure strip (40) by the fixing part (65) and snapped to the bracket (50) by the buckle (66).

10. The battery device according to claim 9, characterized in that, The fixing part (65) has an assembly hole that extends through the fixing part (65) in a first direction. The fixing part (65) is sleeved on the outside of the pressure strip (40) through the assembly hole and fixed to the pressure strip (40).

11. The battery device according to claim 10, characterized in that, The locking fastener (60) and the pressure strip (40) are connected as one piece by injection molding, or... The fixing part (65) includes: a first clamping body and a second clamping body, the first clamping body and the second clamping body are arranged on opposite sides of the pressure strip (40) in the third direction, at least one end of the first clamping body and the second clamping body are detachably connected in the first direction, and the first clamping body and the second clamping body cooperate with each other to clamp and fix on the pressure strip (40).

12. The battery device according to claim 10, characterized in that, The buckle (66) is held in place by the edge of the bracket (50), and / or the bracket (50) is provided with a buckle hole, and the buckle (66) is engaged in the buckle hole.

13. The battery device according to any one of claims 4-11, characterized in that, The bracket (50) is arranged at one end of the housing (10) in the second direction. The bracket (50) is fixed to the housing (10) on both sides in the first direction. The bracket (50) is fixed to the structural beam (20) on one side in the second direction. The locking fastener (60) is arranged on the other side of the bracket (50) in the second direction.

14. The battery device according to any one of claims 1-11, characterized in that, The two ends of the pressure strip (40) are connected to the middle position of the structural beam (20) in the first direction. The bracket (50) includes a first frame and a second frame that are separately arranged. The first frame and the second frame are arranged in the first direction. The first frame extends beyond the pressure strip (40) at one end in the first direction. The high-pressure box is arranged on the first frame.

15. An electrical appliance, characterized in that, The battery device includes any one of claims 1-14.

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