Battery device and electric equipment

Abstract

The utility model relates to the technical field of batteries, and discloses a battery device and electric equipment, a box body defines a containing space, a support plate is arranged in the containing space and is attached to the side wall of the box body, a protruding part is arranged on the support plate, a mounting beam is arranged in the containing space, and the protruding part is embedded into the end part of the mounting beam; the battery cells are arranged in the accommodating space. Therefore, on one hand, the support plate is attached to the side wall of the box body, the occupied space can be improved, the arrangement difficulty can be reduced, and the energy density of the battery device can be improved, and on the other hand, the convex part is embedded into the mounting beam, so that the rigidity and the vibration resistance of the box body can be improved, the stress concentration can be improved, and the assembly difficulty can be reduced; the material cost is considered, the collision safety can be improved, a failure protection mechanism is formed, the bulged part is prevented from cracking and scratching the single battery or other components, the safety and reliability of the battery device can be improved, and the potential safety hazard is reduced.

Description

Technical Field

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

[0002] In related technologies, the housing is used to house individual battery cells. The housing is generally equipped with mounting beams, which are connected to the frame of the housing via adapter brackets. The installation of adapter brackets not only occupies internal space of the housing, reducing the number and density of individual battery cells and affecting the energy density of the battery device, but also the connection structure between the adapter bracket and the frame, and between the adapter bracket and the mounting beam, can lead to local stress integration when the battery device collides, reducing the safety and reliability of the battery device. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this application is to provide a battery device and electrical equipment with a larger internal space dimension of the housing, which can increase the energy density of the battery device, improve internal stress, reduce the probability of stress concentration, and improve the safety and reliability of the battery device.

[0004] In a first aspect, this application proposes a battery device, which includes: a housing, a support plate, a mounting beam, and a battery cell. The housing defines an accommodating space, the support plate is disposed within the accommodating space and is fitted against the side wall of the housing, the support plate has a protrusion, the mounting beam is disposed within the accommodating space and the protrusion is embedded into the end of the mounting beam, and the battery cell is disposed within the accommodating space.

[0005] According to the battery device of the present application embodiment, on the one hand, by attaching the bracket plate to the side wall of the box, the space occupation can be improved, allowing more battery cells to be arranged inside the accommodating space, and facilitating the arrangement of other components. This not only reduces the difficulty of arrangement but also increases the energy density of the battery device. On the other hand, the protrusion is embedded inside the mounting beam, which not only improves the rigidity and vibration resistance of the box, reduces stress concentration, reduces assembly difficulty, and takes into account material costs, but also improves collision safety and forms a failure protection mechanism to prevent the protrusion from cracking and scratching the battery cells or other components. This also improves the safety and reliability of the battery device and reduces safety hazards.

[0006] According to some embodiments of this application, the housing includes: an integrally formed bottom plate, a first side plate, and a second side plate. There are two first side plates arranged opposite each other in a first direction, and two second side plates arranged opposite each other in a second direction. The first direction and the second direction have an angle. A support plate is disposed on the first side plate and / or the second side plate. A mounting beam extends along the second direction and is connected to the support plate located on the first side plate, and / or the mounting beam extends along the first direction and is connected to the support plate located on the second side plate.

[0007] In the above technical solutions, in embodiments where the mounting beam is a longitudinal beam, the first side plates located at both ends of the box length are connected to the mounting beam via bracket plates. While achieving the aforementioned technical effects, this further enhances the box's ability to withstand impacts in the length direction. Specifically, in embodiments where the electrical equipment is a vehicle, it improves the safety performance in both frontal and rear-end collisions, thereby enhancing the safety and reliability of the battery device. In embodiments where the mounting beam is a transverse beam, while achieving the aforementioned technical effects, this further enhances the box's ability to withstand impacts in the width direction. Specifically, in embodiments where the electrical equipment is a vehicle, it improves the safety performance in side-impact collisions, thereby enhancing the safety and reliability of the battery device.

[0008] According to some embodiments of this application, the support plate includes: a protrusion and a body plate, the body plate being attached to a first side plate and / or a second side plate, one end of the protrusion being connected to the body plate, and the other end of the protrusion extending into a mounting beam.

[0009] In the above technical solution, the protrusion is embedded inside the mounting beam. The two can be fixed by interference fit, riveting, etc., without the need for fasteners, which can also prevent fasteners from falling off, further improve space occupation, improve internal stress, reduce the probability of scratches on battery cells and other components, and improve safety. The main body plate and the first side plate, or the main body plate and the second side plate, can be fixed by welding or structural adhesive. That is, the main body plate is welded or bonded with high-strength structural adhesive on the overlapping surface of the first or second side plate. This not only eliminates the need for fasteners, but also improves the connection strength and reliability between the bracket plate and the box, enriches the mechanical transmission path, and improves stress concentration. The protrusion is further riveted to the mounting beam, which not only achieves a reliable mechanical connection between the bracket plate and the mounting beam, but also improves the tensile and shear resistance of the connection area.

[0010] According to some embodiments of this application, the protrusion includes: a first connecting plate and a second connecting plate, one end of the first connecting plate is connected to the body plate, the other end of the first connecting plate is connected to the second connecting plate, and the side of the first connecting plate is connected to the mounting beam.

[0011] In the above technical solution, not only can the mounting beam protect the protrusion, but when the protrusion separates from the body plate, it can also limit the protrusion around its periphery to prevent it from intruding into the accommodating space, thereby improving safety and reliability. Moreover, the protrusion can be fixed to the mounting beam by riveting, which is easy to assemble and does not require fasteners to fix the mounting beam to the protrusion, and can also take into account space occupation.

[0012] According to some embodiments of this application, the protrusion extends along a third direction, which is perpendicular to the plane defined by the first and second directions. The cross-sectional area of ​​the protrusion gradually increases in the third direction, and the side edge of the protrusion that forms an angle with the third direction is in contact with the housing.

[0013] In the above technical solution, the second connecting plate extends along a third direction, so that the second connecting plate as a whole can withstand the impact synchronously when it is subjected to a collision. This not only helps to reduce the collision energy fraction and effectively improve the stress distribution, but also avoids the second connecting plate being subjected to the impact locally first, so as to make full use of the rigidity of the mounting beam.

[0014] Understandably, one side edge of the first connecting plate is connected to the second connecting plate, and the other side edge of the first connecting plate has an angle with the third direction, so that the cross-sectional area of ​​the protrusion in the third direction gradually increases in the direction away from the bottom plate. This allows the edge of the first connecting plate to be consistent with the tilt angle of the first side plate or the second side plate, improving the fitting effect. This improves the connection stability and makes the collision energy transfer effect from the box to the support plate better, reducing the probability of the support plate detaching from the box or breaking.

[0015] According to some embodiments of this application, a clearance notch is provided on one side of the support plate adjacent to the bottom plate. The clearance notch is located on the side of the protrusion adjacent to the bottom plate, and at least a portion of the mounting beam is located within the clearance notch.

[0016] In the above technical solution, the mounting beam can be avoided by avoiding the gap, thereby reducing the probability of interference between the mounting beam and the support plate. The mounting beam can also be set closer to the first side plate or closer to the second side plate, which can further improve the space occupation.

[0017] According to some embodiments of this application, the support plate further includes: a bonding plate, which is located on the side of the body plate adjacent to the bottom plate and is connected to the bottom plate.

[0018] In the above technical solution, the support plate is connected to the first side plate or the second side plate through the body plate, and to the bottom plate through the bonding plate. The connection between the support plate and the box can be realized on two surfaces, which can further improve the overall connection rigidity and connection strength of the box.

[0019] According to some embodiments of this application, a clearance portion is provided between the body plate and the bonding plate. The clearance portion is arc-shaped away from the bottom plate to avoid the protrusion between the bottom plate and the first side plate, and / or the protrusion between the bottom plate and the second side plate.

[0020] In the above technical solution, the box body is a one-piece molded part. There are arc-shaped structures between the first side plate and the bottom plate, and between the second side plate and the bottom plate. The arc-shaped avoidance notch can avoid the arc-shaped structure, which can make the support plate fit the box body more closely.

[0021] According to some embodiments of this application, the mounting beam is provided with reinforcing ribs, and the protrusions abut against the reinforcing ribs.

[0022] In the above technical solution, the mounting beam includes multiple side plates, which enclose a hollow mounting beam. Multiple reinforcing ribs can be arranged inside to improve the structural strength of the mounting beam. The second connecting plate of the protrusion can push against the reinforcing ribs, which can enrich the mechanical transmission path, improve the stress, and maximize the use of the beam stiffness to improve the overall structural stability and resistance to deformation of the box.

[0023] According to some embodiments of this application, the minimum insertion dimension of the protrusion into the mounting beam is 5 mm.

[0024] In the above technical solution, the protrusion extension dimension can be 5mm, 7mm, 10mm, etc., while the minimum extension dimension is 5mm. This can make the size of the overlapping part between the protrusion and the mounting beam more reasonable, so as to make the connection strength between the bracket plate and the mounting beam higher. At the same time, it can also reduce the difficulty of setting the rivet holes. By setting multiple rows and columns of rivet holes, the connection strength and stability between the bracket plate and the mounting beam can be further improved.

[0025] Secondly, this application provides an electrical device, including the battery device described in the above embodiments.

[0026] 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

[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic diagram of an electrical device according to an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the housing according to an embodiment of this application;

[0030] Figure 3This is a schematic diagram of the fit between the mounting beam and the bracket plate according to an embodiment of this application;

[0031] Figure 4 This is another schematic diagram of the fit between the mounting beam and the bracket plate according to an embodiment of this application;

[0032] Figure 5 This is a schematic diagram of a support plate according to an embodiment of this application.

[0033] Figure label:

[0034] Box body 10, bottom plate 11, first side plate 12, second side plate 13

[0035] Support plate 20, body plate 21, protrusion 22, first connecting plate 221, second connecting plate 222, clearance notch 23, fitting plate 24, clearance part 25.

[0036] Mounting beam 30, reinforcing rib 31.

[0037] Battery unit 200, electrical equipment 300, controller 400, motor 500.

[0038] First direction X, second direction Y, third direction Z. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application 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 description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0041] In this application, the reference to "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 in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] 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, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0044] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0045] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing 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, and therefore should not be construed as a limitation of this application.

[0046] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0047] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0048] In this application, "multiple" means two or more (including two).

[0049] Currently, battery devices are being used more and more widely. They are not only applied in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment, aerospace, and many other fields. As the application areas of batteries continue to expand, market demand is also constantly increasing.

[0050] A single battery cell can be a rechargeable battery. A rechargeable battery is a battery cell that can be recharged after it has been discharged, allowing the active materials to be activated and the cell to continue to be used.

[0051] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0052] The battery device mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or mixed via a busbar (e.g., a busbar).

[0053] In some embodiments, multiple battery cells can be combined to form a battery cell, that is, when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery cell.

[0054] In some embodiments, the battery device includes a housing and battery cells, with at least one battery cell or at least one battery unit housed in the housing, the housing having a receiving space, and at least one battery cell or at least one battery unit housed in the receiving space.

[0055] In some embodiments, the battery device or battery cell may be part of an energy storage system. The energy storage system may be an energy storage container, an energy storage cabinet, etc., which integrates batteries and an energy shutdown module.

[0056] The development of battery technology must take into account multiple design factors, such as energy density, cycle life, discharge capacity, charge / discharge rate, and other performance parameters. In addition, battery safety performance also needs to be considered.

[0057] The technical solutions described in the embodiments of this application are applicable to battery devices and electrical equipment using battery devices.

[0058] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical equipment.

[0059] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0060] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of an electrical device 300 provided in some embodiments of this application. A battery device 200 is installed inside the vehicle, and the battery device 200 may be located at the bottom, front, or rear of the vehicle. The battery device 200 can be used to power the vehicle; for example, the battery can serve as the vehicle's operating power source.

[0061] The vehicle may also include a controller 400 and a motor 500. The controller 400 controls the battery to power the motor 500, which serves as a load, for example, to meet the power requirements of the vehicle during starting, navigation, and driving.

[0062] In some embodiments of this application, the battery device 200 can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0063] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the housing 10 provided in some embodiments of this application. The battery device 200 includes a battery cell and a housing 10 for housing the battery cell.

[0064] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, or a battery cell of other shapes; there are no particular limitations in this application.

[0065] In the battery device 200, there can be one or more battery cells. If there are multiple battery cells, they can be connected in series, in parallel, or in a mixed manner. A mixed connection means that multiple battery cells are connected in both series and parallel. Alternatively, multiple battery cells can be first connected in series, in parallel, or in a mixed manner to form a battery unit, and then multiple battery units can be connected in series, in parallel, or in a mixed manner to form a whole, which is housed in the housing 10.

[0066] In the prior art, a mounting beam 30 can be provided inside the housing 10 of the battery device 200, and the housing space can be divided into multiple sub-spaces by the mounting beam 30. Each sub-space can be equipped with a battery cell, or other components located inside the battery device 200, such as a battery management unit.

[0067] The mounting beam 30 is connected to the frame of the housing 10 via a connecting bracket. On the one hand, the connecting bracket occupies the lateral or end space of the housing 10, and the fasteners (such as bolts) between the connecting bracket and the frame or the mounting beam 30 further increase the space occupation, resulting in fewer battery cells that can be arranged in the battery device 200, which reduces the energy density. On the other hand, if the connecting bracket is connected to the frame or the mounting beam 30 via fasteners, displacement may occur when the battery device 200 collides, which may cause concentrated stress on the battery cells, reducing safety and reliability. If the connection is achieved by welding, the weld will be subjected to vibration and impact for a long time during the operation of the battery device 200, posing a risk of failure and reducing the reliability and safety of the battery device 200.

[0068] In view of this, this utility model embodiment provides a battery device 200, which replaces the existing adapter bracket by setting a bracket plate 20. The bracket plate 20 is connected to the side wall of the housing 10, and the protrusion 22 is used to install and fix the mounting beam 30. On the one hand, the protrusion 22 can be embedded inside the mounting beam 30, which not only simplifies the assembly process and improves assembly efficiency, but also reduces space occupation and increases the energy density of the battery device 200. On the other hand, the protrusion 22 is used to fix the mounting beam 30, which can further improve the overall structural stability and deformation resistance of the housing 10. When subjected to collision, it can exhibit better rigidity and improve stress, reduce the probability of intrusion into the battery cells, thereby improving the reliability and safety of the battery device 200.

[0069] The following is for reference. Figures 1-5 This application describes a battery device 200 and an electrical appliance 300 according to embodiments thereof.

[0070] like Figure 2 , Figure 3 and Figure 4As shown, in a first aspect, this application proposes a battery device 200, which includes a housing 10, a support plate 20, a mounting beam 30, and battery cells.

[0071] The housing 10 defines an accommodating space, the support plate 20 is disposed within the accommodating space and is fitted to the side wall of the housing 10, the support plate 20 is provided with a protrusion 22, the mounting beam 30 is disposed within the accommodating space and the protrusion 22 is embedded into the end of the mounting beam 30, and the battery cell is disposed within the accommodating space.

[0072] Specifically, the support plate 20 is connected to the side wall of the housing 10, and the support plate 20 is fitted to the side wall of the housing 10.

[0073] In this way, the mounting beam 30 can be fixed by the bracket plate 20. The bracket plate 20 is fitted to the side wall of the box 10. Compared with the setting of the adapter bracket, it can reduce the space occupied in the length or width direction inside the box 10. It can not only provide greater flexibility for the arrangement of other components inside the box 10, which is suitable for compact use scenarios, but also improve the space occupation, so that there is more space in the accommodating space for the arrangement of battery cells, thereby increasing the energy density of the battery device 200.

[0074] In other words, by fitting the support plate 20 against the side wall of the box 10 and connecting it to the box 10, the space occupied by the support plate 20 can be improved.

[0075] Furthermore, the protrusion 22 is used to install and fix the mounting beam 30, and the protrusion 22 is embedded into the end of the mounting beam 30.

[0076] Therefore, on the one hand, the assembly process can be simplified, assembly efficiency can be improved, material utilization can be increased, and costs can be reduced. On the other hand, the protrusion 22 can be completely embedded inside the mounting beam 30, which not only makes the connection between the bracket plate 20 and the mounting beam 30 more stable, but also disperses stress, avoids local stress concentration, improves the rigidity of the housing 10, and improves the vibration resistance of the housing 10, thereby improving the stability and durability of the battery device 200. Moreover, when the housing 10 is subjected to impact, the bracket plate 20 will not intrude into the accommodating space due to deformation. Even if the bracket plate 20 fails and cracks in extreme cases, the embedded connection structure can ensure that the protrusion 22 will not be exposed, thereby reducing the probability of the crack scratching the battery cell and other components in the accommodating space, improving the impact resistance of the housing 10, and further improving the protection of the battery cell. It also reduces the probability of stress concentration caused by the bracket plate 20 intrusion, thereby further reducing the probability of thermal runaway caused by battery cell damage, thereby improving the reliability and safety of the battery device 200.

[0077] In other words, the protrusion 22 is embedded in the mounting beam 30. On the one hand, this can improve collision safety and form a failure protection mechanism. The protrusion 22 can be completely wrapped by the mounting beam 30, reducing the probability of the protrusion 22 intruding into the accommodating space during a collision. Even under extreme collision compression, the bracket plate 20 will not deform and enter the accommodating space, thus protecting the internal battery cells and other key components from physical damage. On the other hand, it can reduce assembly difficulty and improve structural stability. That is, a mechanical transmission path can be formed between the protrusion 22 and the mounting beam 30. While achieving a reliable and stable connection between the mounting beam 30 and the bracket plate 20, it can improve the overall rigidity and vibration resistance of the housing 10, improve stress concentration, simplify assembly steps, reduce assembly difficulty, and take into account material costs.

[0078] In summary, according to the battery device 200 of the present application embodiment, on the one hand, by attaching the bracket plate 20 to the side wall of the housing 10, the space occupancy can be improved, allowing more battery cells to be arranged inside the accommodating space, and facilitating the arrangement of other components. This not only reduces the difficulty of arrangement but also increases the energy density of the battery device 200. On the other hand, the protrusion 22 is embedded inside the mounting beam 30, which not only improves the rigidity and vibration resistance of the housing 10, reduces stress concentration, reduces assembly difficulty, and takes into account material costs, but also improves collision safety and forms a failure protection mechanism to prevent the protrusion 22 from cracking and scratching the battery cells or other components. This also improves the safety and reliability of the battery device 200 and reduces safety hazards.

[0079] like Figure 2 , Figure 3 as well as Figure 4 As shown, according to some embodiments of this application, the housing 10 includes: an integrally formed bottom plate 11, a first side plate 12 and a second side plate 13, two first side plates 12 are arranged opposite each other in a first direction, two second side plates 13 are arranged opposite each other in a second direction, the first direction and the second direction have an angle, a support plate 20 is disposed on the first side plate 12 and / or the second side plate 13, a mounting beam 30 extends along the second direction and is connected to the support plate 20 located on the first side plate 12, and / or the mounting beam 30 extends along the first direction and is connected to the support plate 20 located on the second side plate 13.

[0080] It can be understood that taking the electrical equipment 300 as a vehicle as an example, the first direction can be the length direction of the battery device 200, corresponding to the traveling direction of the vehicle, the second direction can be the width direction of the battery device 200, corresponding to the left and right directions of the vehicle, the first side plate 12 is the side plate on the front and rear sides of the box body 10, the second side plate 13 is the side plate on the width sides of the box body 10, and when the installation beam 30 is arranged between the first side plates 12, it forms a longitudinal beam inside the box body 10, and when the installation beam 30 is arranged between the second side plates 13, it forms a cross beam inside the box body 10.

[0081] Among them, in the embodiment where the installation beam 30 is configured as a longitudinal beam, the first side plates 12 at both ends of the length of the box body 10 and the installation beam 30 are connected by the support plate 20. On the premise of achieving the above technical effects, the ability of the box body 10 to withstand impacts in the length direction can be further improved. That is, in the embodiment where the electrical equipment 300 is a vehicle, the safety performance of frontal collision and rear collision can be improved to enhance the safety and reliability of the battery device 200. In the embodiment where the installation beam 30 is configured as a cross beam, on the premise of achieving the above technical effects, the ability of the box body 10 to withstand impacts in the width direction can be further improved. That is, in the embodiment where the electrical equipment 300 is a vehicle, the safety performance of side collision can be improved to enhance the safety and reliability of the battery device 200.

[0082] It can be understood that the box body 10 is an integrally formed structure. For example, it can be configured as a stamping part, and correspondingly, the support plate 20 can also be configured as an integrally formed part and formed into a U-shaped support structure to ensure the accuracy of the geometric shape and dimensions, and a high-strength lightweight material (such as high-strength steel or aluminum alloy) is used to meet the lightweight requirements. Of course, in some other embodiments, the support plate 20 can also be configured as a welded structure, that is, the protruding part 22 and the main body plate 21 are welded and connected to form a U-shaped support structure.

[0083] According to some embodiments of the present application, the support plate 20 includes: a protruding part 22 and a main body plate 21. The main body plate 21 is attached to the first side plate 12 and / or the second side plate 13. One end of the protruding part 22 is connected to the main body plate 21, and the other end of the protruding part 22 extends into the installation beam 30.

[0084] Specifically, in combination with Figure 3 and Figure 4 As shown, the support plate 20 includes a protruding part 22 and a main body plate 21, so that the general cross-sectional contour of the support plate 20 is in a "U" shape, which can not only make full use of space, but also further improve the support stability and support stiffness of the support plate 20 for the installation beam 30.

[0085] Understandably, the protrusion 22 is embedded inside the mounting beam 30, and the two can be fixed by interference fit, riveting, or other means, without the need for fasteners. This also prevents fasteners from falling off, further improves space utilization, reduces internal stress, lowers the probability of scratches on battery cells and other components, and enhances safety. The main body plate 21 and the first side plate 12, or the main body plate 21 and the second side plate 13, can be fixed by welding or structural adhesive. That is, the main body plate 21 is welded or bonded with high-strength structural adhesive on the overlapping surface of the first side plate 12 or the second side plate 13. This not only eliminates the need for fasteners but also improves the connection strength and reliability between the support plate 20 and the housing 10, enriches the mechanical transmission path, and improves stress concentration. The protrusion 22 is further riveted to the mounting beam 30, which not only achieves a reliable mechanical connection between the support plate 20 and the mounting beam 30 but also improves the tensile and shear strength of the connection area.

[0086] Meanwhile, by using welding and riveting or structural adhesive and riveting, the overall structural stability and rigidity of the enclosure 10 can be further improved, reducing the risk of failure caused by a single connection method.

[0087] It should be noted that in the embodiment where the body panel 21 is connected to the box 10 by structural adhesive, the adhesive should be selected as a material with good durability, good corrosion resistance, high temperature resistance, and stable low temperature performance.

[0088] like Figure 3 , Figure 4 as well as Figure 5 As shown, according to some embodiments of this application, the protrusion 22 includes: a first connecting plate 221 and a second connecting plate 222. One end of the first connecting plate 221 is connected to the body plate 21, and the other end of the first connecting plate 221 is connected to the second connecting plate 222. The side of the first connecting plate 221 is connected to the mounting beam 30.

[0089] The protrusion 22 includes a second connecting plate 222 and a first connecting plate 221 located on both sides of the second connecting plate 222. Both first connecting plates 221 are connected to the main body plate 21, while the second connecting plate 222 protrudes from the main body plate 21 and is used to extend into the mounting beam 30. Riveting holes can be opened on the side of the first connecting plate 221 and riveted to the mounting beam 30.

[0090] Therefore, not only can the mounting beam 30 protect the protrusion 22, but when the protrusion 22 separates from the body plate 21, it can limit the protrusion 22 around its periphery to prevent it from intruding into the accommodating space, thereby improving safety and reliability. Moreover, the protrusion 22 can be fixed to the mounting beam 30 by riveting, which is easy to assemble and does not require fasteners to fix the mounting beam 30 to the protrusion 22, thus further taking into account space occupancy.

[0091] like Figure 4 As shown, according to some embodiments of this application, a reinforcing rib 31 is provided inside the mounting beam 30, and the protrusion 22 pushes against the reinforcing rib 31.

[0092] Specifically, the mounting beam 30 includes multiple side plates that surround the hollow mounting beam 30, and multiple reinforcing ribs 31 can be arranged inside to improve the structural strength of the mounting beam 30. The second connecting plate 222 of the protrusion 22 can push against the reinforcing ribs 31, which can enrich the mechanical transmission path, improve the stress, and maximize the use of the rigidity of the mounting beam 30 to improve the overall structural stability and resistance to deformation of the box 10.

[0093] According to some embodiments of this application, the protrusion 22 extends along a third direction, which is perpendicular to the plane defined by the first direction and the second direction. The cross-sectional area of ​​the protrusion 22 gradually increases in the third direction, and the side edge of the protrusion 22 that forms an angle with the third direction is in contact with the housing 10.

[0094] It should be noted that the third direction is a vertical direction. The first and second directions can define a plane parallel to the horizontal plane, while the third direction is a vertical direction perpendicular to the horizontal plane.

[0095] In this way, the second connecting plate 222 extends along the third direction, so that when it is subjected to a collision, the second connecting plate 222 can be subjected to the impact synchronously as a whole. This not only helps to reduce the collision energy fraction and effectively improve the stress distribution, but also avoids the second connecting plate 222 being subjected to the impact locally first, so as to make full use of the rigidity of the mounting beam 30.

[0096] It is understandable that one side edge of the first connecting plate 221 is connected to the second connecting plate 22, and the other side edge of the first connecting plate 221 has an angle with the third direction, so that the cross-sectional area of ​​the protrusion 22 in the third direction gradually increases in the direction away from the bottom plate 11. This allows the edge of the first connecting plate 221 to be consistent with the tilt angle of the first side plate 12 or the second side plate 13, improving the fitting effect. This improves the connection stability and makes the collision energy transfer effect from the box 10 to the support plate 20 better, reducing the probability of the support plate 20 detaching from the box 10 or breaking itself.

[0097] like Figure 3 , Figure 4 as well as Figure 5 As shown, according to some embodiments of this application, a clearance notch 23 is provided on the side of the support plate 20 adjacent to the bottom plate 11. The clearance notch 23 is located on the side of the protrusion 22 adjacent to the bottom plate 11, and at least a portion of the mounting beam 30 is located within the clearance notch 23.

[0098] Therefore, by avoiding the gap 23, the mounting beam 30 can be avoided, thereby reducing the probability of interference between the mounting beam 30 and the support plate 20. The mounting beam 30 can also be placed closer to the first side plate 12 or closer to the second side plate 13, which can further improve the space occupation.

[0099] Combination Figure 2 , Figure 3 as well as Figure 4 As shown, according to some embodiments of this application, the support plate 20 further includes: a bonding plate 24, which is located on the side of the body plate 21 adjacent to the bottom plate 11 and is connected to the bottom plate 11.

[0100] In this way, the support plate 20 is connected to the first side plate 12 or the second side plate 13 through the body plate 21, and to the bottom plate 11 through the bonding plate 24. The support plate 20 and the box 10 can be connected on two surfaces, which can further improve the overall connection rigidity and connection strength of the box 10.

[0101] At the same time, a mechanical transmission path can also be formed between the bonding plate 24 and the base plate 11, which can further improve the dispersion effect of collision energy and collision force.

[0102] According to some embodiments of this application, a clearance portion 25 is provided between the body plate 21 and the bonding plate 24. The clearance portion 25 is arc-shaped away from the bottom plate 11 to avoid the protrusions between the bottom plate 11 and the first side plate 12, and / or between the bottom plate 11 and the second side plate 13.

[0103] It is understandable that the housing 10 is a one-piece molded part, and there are arc-shaped structures between the first side plate 12 and the bottom plate 11, and between the second side plate 13 and the bottom plate 11. The arc-shaped clearance notch 23 can avoid the arc-shaped structure, so that the support plate 20 and the housing 10 can fit more closely.

[0104] According to some embodiments of this application, the minimum insertion dimension of the protrusion 22 into the mounting beam 30 is 5 mm.

[0105] Exemplarily, the insertion dimension of the protrusion 22 can be 5 mm, 7 mm, 10 mm, etc., and the minimum insertion dimension is 5 mm, which can make the dimension of the overlapping part between the protrusion 22 and the mounting beam 30 more reasonable, so as to make the connection strength between the support plate 20 and the mounting beam 30 higher. At the same time, it can also reduce the difficulty of setting the riveting holes. By setting multiple rows and columns of riveting holes, the connection strength and stability between the support plate 20 and the mounting beam 30 can be further improved.

[0106] In summary, the box body 10 of the embodiment of the present application can adopt a dual connection method of gluing and riveting or a dual connection method of welding and riveting. On the overlapping plane, the overall strength of the body plate 21 and the box body 10 is increased by gluing or welding. At the same time, riveting is carried out at the opening of the first connecting plate 221 with the mounting beam 30, ensuring the tensile and shear resistance performance of the connecting part. This dual fixing method not only improves the structural stability of the box body 10, but also effectively avoids the failure risk caused by a single connection method.

[0107] More importantly, the second connecting plate 222 of the "U" - shaped support plate 20 of the present utility model abuts against the reinforcing rib 31 inside the mounting beam 30. During the extrusion process, the stiffness of the mounting beam 30 is fully utilized, further enhancing the stability and strength of the overall structure. This design not only optimizes the structural layout, but also significantly improves the assembly efficiency and overall performance through the efficient utilization of materials and the rationality of the structure. Compared with the traditional design, the present utility model has significant advantages in terms of space utilization rate, connection strength, stiffness utilization, and assembly efficiency, and is applicable to various scenarios requiring compact space and high - strength connection.

[0108] As Figure 2 shown, the present application provides a battery device 200, including: the box body 10 in the above - mentioned embodiment and battery cells, and the battery cells are arranged in the accommodation space.

[0109] According to the battery device 200 of the embodiment of the present application, by adopting the above - mentioned box body 10, not only can the structural strength of the battery device 200 be improved, the ability of the battery device 200 to resist collision be enhanced, the reliability and safety of the battery device 200 be extended, and potential safety hazards be reduced, but also the energy density of the battery device 200 can be increased, and the space occupation of the battery device 200 can be improved.

[0110] The present application provides an electrical equipment 300, including: the battery in the above - mentioned embodiment, and the technical effects are the same as those of the above - mentioned battery device 200, which will not be elaborated here. [[ID=I9]]

[0111] For other components and operations of the box body 10, battery device 200, and electrical equipment 300 according to the embodiments of the present application, they are known to those of ordinary skill in the art and will not be elaborated here.

[0112] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0113] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that, include: The housing (10) defines an accommodating space; The support plate (20) is disposed in the accommodating space and is attached to the side wall of the box (10). The support plate (20) is provided with a protrusion (22). Mounting beam (30), the mounting beam (30) is disposed within the accommodating space, and the protrusion (22) is embedded into the end of the mounting beam (30); A battery cell, wherein the battery cell is disposed in the accommodating space.

2. The battery device according to claim 1, characterized in that, The housing (10) includes: an integrally formed bottom plate (11), a first side plate (12) and a second side plate (13), the first side plate (12) being two and arranged opposite each other in a first direction, the second side plate (13) being two and arranged opposite each other in a second direction, the first direction and the second direction having an angle, the bracket plate (20) being disposed on the first side plate (12) and / or the second side plate (13), the mounting beam (30) extending along the second direction and connected to the bracket plate (20) located on the first side plate (12), and / or the mounting beam (30) extending along the first direction and connected to the bracket plate (20) located on the second side plate (13).

3. The battery device according to claim 2, characterized in that, The bracket plate (20) includes a protrusion (22) and a body plate (21), the body plate (21) being attached to the first side plate (12) and / or the second side plate (13), one end of the protrusion (22) being connected to the body plate (21), and the other end of the protrusion (22) extending into the mounting beam (30).

4. The battery device according to claim 3, characterized in that, The protrusion (22) includes a first connecting plate (221) and a second connecting plate (222). One end of the first connecting plate (221) is connected to the body plate (21), and the other end of the first connecting plate (221) is connected to the second connecting plate (222). The side of the first connecting plate (221) is connected to the mounting beam (30).

5. The battery device according to claim 2, characterized in that, The protrusion (22) extends along a third direction, which is perpendicular to the plane defined by the first direction and the second direction. The cross-sectional area of ​​the protrusion (22) gradually increases in the third direction, and the side edge of the protrusion (22) that forms an angle with the third direction fits against the box body (10).

6. The battery device according to claim 3, characterized in that, The support plate (20) has a clearance notch (23) on the side adjacent to the base plate (11). The clearance notch (23) is located on the side of the protrusion (22) adjacent to the base plate (11). At least a portion of the mounting beam (30) is located within the clearance notch (23).

7. The battery device according to claim 3, characterized in that, The support plate (20) further includes a bonding plate (24), which is located on the side of the body plate (21) adjacent to the bottom plate (11) and is connected to the bottom plate (11).

8. The battery device according to claim 7, characterized in that, An avoidance portion (25) is provided between the body plate (21) and the bonding plate (24). The avoidance portion (25) is arc-shaped away from the bottom plate (11) to avoid the protrusion between the bottom plate (11) and the first side plate (12), and / or the protrusion between the bottom plate (11) and the second side plate (13).

9. The battery device according to any one of claims 1-8, characterized in that, The mounting beam (30) is provided with a reinforcing rib (31), and the protrusion (22) pushes against the reinforcing rib (31).

10. The battery device according to any one of claims 1-8, characterized in that, The minimum insertion dimension of the protrusion (22) into the mounting beam (30) is 5 mm.

11. An electrical appliance, characterized in that, include: The battery device as claimed in claim 10.

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