Battery device and vehicle

Abstract

The application provides a battery device and a vehicle. The battery device comprises a box body and a battery cell. The box body comprises a frame and a cross beam and a longitudinal beam arranged in the frame. The cross beam, the longitudinal beam and the frame define a plurality of spaced-apart accommodation spaces, at least part of the accommodation spaces being formed as battery spaces. The battery cell is arranged in groups in the battery spaces. A reinforcing member is arranged between the cross beam and the longitudinal beam, and / or between the cross beam and the frame, and / or between a first beam extending in a first direction of the frame and a second beam extending in a second direction of the frame, the first direction and the second direction having an included angle. Thus, the weight of the battery device can be reduced, the number of parts can be reduced, the cost can be reduced, the space occupation can be improved, the energy density of the battery device can be improved, the grouping efficiency of the battery cell can be improved, the structural strength of the battery device can be improved, and the structural stability and reliability of the battery device can be improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a battery device and a vehicle. Background Technology

[0002] In related technologies, the box contains multiple beams that are staggered and fixed by lap joints or welding. This results in low structural strength, poor resistance of the battery device to vibration and impact, and low reliability.

[0003] Meanwhile, multiple battery cells are stacked together, and module side plates and module end plates are set on the outside to form a battery module. The battery module is placed inside the box. The module side plates, module end plates, and the reserved battery module installation and fixing positions and assembly process gaps inside the box will result in more battery device components, higher cost, and lower energy density of the battery device. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this utility model is to provide a battery device with a casing structure that has higher strength, better resistance to vibration and impact, and higher reliability. At the same time, the battery cells are directly stacked and arranged in the battery space, without module side plates, module end plates, or other structures, and there is no need to reserve module assembly gaps or module fixing points in the casing. This can also reduce the cost of the battery device and increase its energy density.

[0005] This application further proposes a vehicle employing the aforementioned battery device.

[0006] In a first aspect, this application provides a battery device, comprising: a housing and individual battery cells. The housing includes: a frame and crossbeams and longitudinal beams disposed within the frame. The crossbeams, longitudinal beams, and frame define a plurality of spaced-apart accommodating spaces, at least a portion of which forms a battery space. Individual battery cells are arranged in groups within the battery space.

[0007] A reinforcing member is provided between the crossbeam and the longitudinal beam, and / or between the crossbeam and the frame, and / or between the first beam extending along the first direction of the frame and the second beam extending along the second direction of the frame, wherein the first direction and the second direction form an angle.

[0008] According to the battery device of the present application embodiment, the battery space is defined in the box by the crossbeam and the longitudinal beam, and further by the setting of the reinforcing member, not only can the weight of the battery device be reduced, the number of parts reduced, the cost reduced, the space occupied improved, the energy density of the battery device increased, and the packing efficiency of the battery cells increased, but the structural strength, structural stability and reliability of the battery device can also be improved.

[0009] According to some embodiments of this application, the crossbeam includes: end crossbeams spaced apart in the first direction and at least one intermediate crossbeam located between the two end crossbeams, the reinforcing member includes a first reinforcing member, and the first reinforcing member is disposed between the intermediate crossbeam and the frame.

[0010] According to some embodiments of this application, the first reinforcing member includes: a first connecting seat and a first connecting protrusion, the first connecting protrusion extending into the intermediate crossbeam, the first connecting seat being connected to the first beam, and the orthographic projection profile of the first connecting seat in the second direction being larger than the orthographic projection profile of the first connecting protrusion.

[0011] According to some embodiments of this application, there is at least one longitudinal beam, the longitudinal beam is connected to the cross beam, and a clearance recess is provided in the area where the cross beam is connected to the cross beam. The reinforcing member includes a second reinforcing member, which is at least disposed in the clearance recess of the intermediate cross beam and connected to the intermediate cross beam and the longitudinal beam.

[0012] According to some embodiments of this application, the second reinforcing member includes: a second connecting seat and connecting ears located on both sides of the second connecting seat in the second direction, the second connecting seat extending into the clearance recess, and the connecting ears being connected to the longitudinal beam.

[0013] According to some embodiments of this application, at least one second beam includes a straight beam segment and an inclined beam segment, and the second beam and the end crossbeam define an electrical space for accommodating electrical components. The reinforcing member further includes a third reinforcing member, which is disposed between the end crossbeam defining the electrical space and the frame.

[0014] According to some embodiments of this application, the third reinforcing member includes: a second connecting protrusion and a connecting plate, the second connecting protrusion extending into the end crossbeam, the connecting plate being connected to the first beam, and the connecting plate being constructed as a trapezoidal plate.

[0015] According to some embodiments of this application, the reinforcing member further includes: a fourth reinforcing member disposed between the first beam and the second beam, and the fourth reinforcing member includes: a third connecting protrusion and a fourth connecting protrusion, the third connecting protrusion being inserted into the first beam and the fourth connecting protrusion being inserted into the second beam.

[0016] According to some embodiments of this application, the battery device further includes: a bottom protective plate, a lower cooling plate, and an upper cooling plate. The bottom protective plate is connected to the housing. The lower cooling plate is located on the side of the bottom protective plate facing the housing. The lower cooling plate and the upper cooling plate are located on both sides of the battery cell. The upper cooling plate is constructed as the top cover of the housing. A heat-conducting and temperature-equalizing structure is provided between the upper cooling plate and the battery cell, and between the lower cooling plate and the battery cell.

[0017] Secondly, this application proposes a vehicle including the battery device described in the above embodiments.

[0018] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a split schematic diagram of a battery device according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram showing the fit of the housing, the first reinforcing member, the second reinforcing member, the third reinforcing member, and the fourth reinforcing member according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of a battery cell according to an embodiment of this application.

[0023] Figure label:

[0024] Battery device 100,

[0025] Box body 10, frame 11, first beam 111, second beam 112, straight beam segment 1121, inclined beam segment 1122, crossbeam 12, clearance recess 12a, end crossbeam 121, middle crossbeam 122, longitudinal beam 13.

[0026] 20 cells per battery

[0027] First reinforcing member 31, first connecting seat 311, first connecting protrusion 312, second reinforcing member 32, second connecting seat 321, connecting ear 322, third reinforcing member 33, second connecting protrusion 331, connecting plate 332, fourth reinforcing member 34, third connecting protrusion 341, fourth connecting protrusion 342.

[0028] Bottom protective plate 40, upper cold plate 50, lower cold plate 60, uniform temperature heat conduction structure 70. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "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 are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0036] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0037] In the description of this utility model, 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.

[0038] In this application, "multiple" means two or more (including two).

[0039] In the existing technology, battery devices adopt a traditional battery module solution. The battery module includes components such as module end plate and module side plate. The side of the battery cell is fixed to the module side plate with structural adhesive. The module end plate is connected to the module side plate to form a complete battery module. A fixing structure is set on the module end plate to fix the battery module in the battery device box. This results in the need to reserve the installation and fixing position of the battery module in the box and the assembly process gap, resulting in a large number of parts, high cost, and low energy density of the battery device.

[0040] Meanwhile, the battery pack housing requires a beam structure inside. The beams are fixed to the frame and the staggered beams by welding, resulting in low structural strength. Furthermore, the battery modules are only bonded to the housing via the bottom plane, leading to poor resistance to vibration and impact and low reliability of the battery pack.

[0041] Based on this, this application proposes a battery device in which the interior of the housing is divided into multiple battery spaces by crossbeams and longitudinal beams. The battery cells are directly stacked and arranged in the battery spaces, eliminating the need for a battery module structure. This reduces the number of components, lowers costs, improves space utilization, and increases energy density. At the same time, by setting reinforcing members between the crossbeams and longitudinal beams, between the crossbeams and the frame, and between adjacent first and second beams, the structural strength of the housing can be improved, as can the structural strength and rigidity of the battery device, thereby improving its resistance to impact and vibration and enhancing the reliability of the battery device.

[0042] The following is for reference. Figures 1-3 This invention describes a battery device 100 and a vehicle according to an embodiment of the present invention.

[0043] like Figure 1 and Figure 2 As shown, this application provides a battery device 100, including: a housing 10 and battery cells 20. The housing 10 includes: a frame 11 and a crossbeam 12 and a longitudinal beam 13 disposed within the frame 11. The crossbeam 12, the longitudinal beam 13 and the frame 11 define a plurality of spaced-apart accommodating spaces, at least a portion of which are formed as battery spaces. The battery cells 20 are arranged in groups within the battery spaces.

[0044] In other words, by setting up a crossbeam 12 and a longitudinal beam 13 structure inside the housing 10, the longitudinal beam 13 extends along the length direction (i.e., the first direction) of the housing 10, and the crossbeam 12 extends along the width direction (i.e., the second direction) of the housing 10, and the longitudinal beam 13 and the crossbeam 12 are staggered, so as to define multiple spaced-apart accommodating spaces inside the housing 10. There are multiple battery cells 20, and the multiple battery cells 20 can be divided into multiple groups, each group of battery cells 20 has at least one, and each group of battery cells 20 is stacked in a battery space, so that while completing the layout of the battery cells 20, there is no need to introduce module end plates and module side plates, which can reduce the number of parts, reduce costs and weight, improve space occupation, and increase the energy density of the battery module.

[0045] Understandably, the elimination of module end plates and module side plates means that there is no need to match assembly process gaps and battery module installation and fixing positions within the housing 10, which can effectively improve space occupancy.

[0046] Furthermore, a reinforcing member is provided between the crossbeam 12 and the longitudinal beam 13, and / or between the crossbeam 12 and the frame 11, and / or between the first beam 111 extending along the first direction of the frame 11 and the second beam 112 extending along the second direction of the frame 11, with the first direction and the second direction having an angle.

[0047] Specifically, there are multiple reinforcing components, and the reinforcing components are at least located between the crossbeam 12 and the longitudinal beam 13, between the crossbeam 12 and the frame 11, and between the first beam 111 and the second beam 112. By setting the reinforcing components, the structural strength of the housing 10 can be improved, thereby improving the structural strength of the battery device 100 and improving the reliability of the battery device 100.

[0048] See Figure 3 As shown, the battery cell 20 in this embodiment can be a blade battery, such as a long blade battery or a short blade battery. The blade battery does not have a module integration solution, which can effectively improve space occupation.

[0049] According to the embodiments of this application, the battery device 100 defines the battery space within the housing 10 by the crossbeam 12 and the longitudinal beam 13. Furthermore, by setting up reinforcing members, it is possible not only to reduce the weight of the battery device 100, reduce the number of parts, reduce costs, improve space occupancy, increase the energy density of the battery device 100, and increase the packing efficiency of the battery cells 20, but also to improve the structural strength, structural stability, and reliability of the battery device 100.

[0050] It should be noted that the reinforcing component can be constructed as an aluminum alloy die-casting.

[0051] like Figure 2 As shown, according to some embodiments of this application, the crossbeam 12 includes: end crossbeams 121 spaced apart in a first direction and at least one intermediate crossbeam 122 located between the two end crossbeams 121, and the reinforcing member includes a first reinforcing member 31, and the first reinforcing member 31 is disposed between the intermediate crossbeam 122 and the frame 11.

[0052] For example, there are three crossbeams 12, namely two end crossbeams 121 provided near the length end of the box body 10, and an intermediate crossbeam 122 located between the two end crossbeams 121. The reinforcement may include a first reinforcement 31, which is disposed between the intermediate crossbeam 122 and the frame 11.

[0053] Therefore, by setting the first reinforcing member 31, the connection strength and reliability between the first beam 111 and the middle crossbeam 122 of the frame 11 can be improved, thereby improving the overall structural strength and rigidity of the box 10.

[0054] Combination Figure 2As shown, according to some embodiments of this application, the first reinforcing member 31 includes: a first connecting seat 311 and a first connecting protrusion 312. The first connecting protrusion 312 extends into the intermediate crossbeam 122. The first connecting seat 311 is connected to the first beam 111, and the orthographic projection profile of the first connecting seat 311 in the second direction is larger than the orthographic projection profile of the first connecting protrusion 312.

[0055] Specifically, the first connecting seat 311 is generally plate-shaped, and the first connecting protrusion 312 is formed on the side of the first connecting seat 311 facing the middle beam. The orthographic projection profile of the first connecting seat 311 is larger than the orthographic projection profile of the first connecting protrusion 312, so that the first connecting seat 311 can be connected to the first beam 111 through surface contact. The first connecting protrusion 312 can extend into the beam cavity of the middle crossbeam 122, thereby effectively improving the structural strength of the connection area between the middle crossbeam 122 and the first beam 111, and improving the connection reliability and stability of the two.

[0056] like Figure 2 As shown, according to some embodiments of this application, there is at least one longitudinal beam 13, the longitudinal beam 13 is connected to the cross beam 12, and a clearance recess 12a is provided in the area where the cross beam 12 is connected to the cross beam 12. The reinforcing member includes a second reinforcing member 32, which is at least provided in the clearance recess 12a of the intermediate cross beam 122 and is connected to the intermediate cross beam 122 and the longitudinal beam 13.

[0057] The longitudinal beam 13 is located between the two first beams 111 and is arranged opposite to the first beams 111. There can be one or more longitudinal beams 13. The crossbeam 12 is connected to the longitudinal beam 13, and a clearance recess 12a can be provided in the area where the crossbeam 12 is connected to the longitudinal beam 13. The second reinforcing member 32 is arranged in the clearance recess 12a. Under the premise of improving the connection strength and reliability between the crossbeam 12 and the longitudinal beam 13, the second reinforcing member 32 can be located in the clearance recess 12a, which can also achieve structural clearance, reduce the probability of interference with surrounding components, and avoid local protrusions at the top of the crossbeam 12 or the longitudinal beam 13, so that the overall space occupation of the battery device 100 in the height direction is more reasonable.

[0058] According to some embodiments of this application, the second reinforcing member 32 includes: a second connecting seat 321 and connecting ears 322 located on both sides of the second connecting seat 321 in a second direction. The second connecting seat 321 extends into the relief recess 12a, and the connecting ears 322 are connected to the longitudinal beam 13.

[0059] Specifically, the second connecting seat 321 can be constructed as a prism, and the second connecting seat 321 is provided with connecting ears 322 on both sides in the second direction. The corresponding clearance groove is formed as a T-shaped groove. The second connecting seat 321 extends into the T-shaped groove, and the connecting ears 322 are connected to the crossbeam 12 in the T-shaped groove by fasteners or welding, thereby effectively improving the connection stability between the crossbeam 12 and the longitudinal beam 13.

[0060] It should be noted that the second reinforcing member 32 is provided at least in relation to the intermediate crossbeam 122.

[0061] like Figure 2 As shown, according to some embodiments of this application, at least one second beam 112 includes a straight beam segment 1121 and an inclined beam segment 1122, and the second beam 112 and the end crossbeam 121 define an electrical space for accommodating electrical components. The reinforcement also includes a third reinforcement 33, and the third reinforcement 33 is provided between the end crossbeam 121 defining the electrical space and the frame 11.

[0062] It should be noted that the second beam 112 is a beam extending along the width direction of the box 10 and located at both ends of the length direction of the box 10. One of the second beams 112 may include a straight beam segment 1121 and an inclined beam segment 1122. The straight beam segment 1121 extends along the second direction, and the inclined beam segment 1122 extends at an inclination. One end of the inclined beam segment 1122 is connected to the straight beam segment 1121, and the other end is connected to the first beam 111, so as to define an electrical space. This space can not only be used to arrange electrical components (such as battery management units) located in the box 10, but also improve the impact resistance of the box 10.

[0063] Furthermore, a third reinforcing member 33 is provided between the end beam 121 of the electrical space and the end of the first beam 111, which can achieve targeted structural reinforcement of one end of the electrical space of the housing 10, thereby improving the structural strength of the battery device 100 and thus improving the reliability and safety of the battery device 100.

[0064] According to some embodiments of this application, the third reinforcing member 33 includes: a second connecting protrusion 331 and a connecting plate 332. The second connecting protrusion 331 extends into the end crossbeam 121, and the connecting plate 332 is connected to the first beam 111. The connecting plate 332 is constructed as a trapezoidal plate.

[0065] It should be noted that the connecting plate 332 is formed as a trapezoidal plate, and a third connecting protrusion 341 is provided on the side of the trapezoidal plate away from the first beam 111. The third connecting protrusion 341 extends into the end crossbeam 121, and the trapezoidal plate is connected to the first beam 111 to improve the reliability and stability of the connection between the first beam 111 and the end crossbeam 121.

[0066] like Figure 2As shown, according to some embodiments of this application, the reinforcing member further includes a fourth reinforcing member 34, which is disposed between the first beam 111 and the second beam 112, and includes a third connecting protrusion 341 and a fourth connecting protrusion 342, wherein the third connecting protrusion 341 is inserted into the first beam 111 and the fourth connecting protrusion 342 is inserted into the second beam 112.

[0067] Specifically, the fourth reinforcing member 34 has an L-shaped projection profile in the height direction. The third connecting protrusion 341 can extend into the cavity of the first beam 111, and the fourth connecting protrusion 342 can extend into the cavity of the second beam 112, so as to realize the connection and fixation between the first beam 111 and the second beam 112, and improve the structural strength and rigidity of the connection area between the first beam 111 and the second beam 112, thereby improving the structural strength and rigidity of the battery device 100.

[0068] like Figure 1 As shown, according to some embodiments of this application, the battery device 100 further includes: a bottom protective plate 40, a lower cooling plate 60, and an upper cooling plate 50. The bottom protective plate 40 is connected to the housing 10. The lower cooling plate 60 is located on the side of the bottom protective plate 40 facing the housing 10. The lower cooling plate 60 and the upper cooling plate 50 are located on both sides of the battery cell 20, and the upper cooling plate 50 is constructed as the upper cover of the housing 10. A heat-conducting structure 70 is provided between the upper cooling plate 50 and the battery cell 20, and between the lower cooling plate 60 and the battery cell 20.

[0069] It should be noted that in order to alleviate the range anxiety of drivers and passengers, the battery device 100 is generally configured with a high-rate fast charging of 4C or above, which generates a lot of heat. In the existing technology, the battery cells 20 are cooled by arranging harmonica tubes on a large surface. However, this results in a large number of cold plates, connectors and connecting pipes, which occupy a large amount of space in the first and second directions.

[0070] Based on this, this application sets up an upper cooling plate 50 and a lower cooling plate 60 to cool the battery cell 20 on both sides of its height. A heat-conducting structure 70 is set between the upper cooling plate 50 and the battery cell 20, and between the lower cooling plate 60 and the battery cell 20. This improves the reliability and stability of the connection, and also improves the cooling efficiency of the battery cell 20. It can achieve a stable and reliable temperature regulation effect without the need for harmonica tubes, cooling plates and connectors, and improves space utilization.

[0071] Meanwhile, a bottom guard plate 40 is provided under the housing 10 to improve the battery device 100's ability to resist bottoming, scratching and ball impact, while the upper cooling plate 50 is formed as the top cover of the housing 10, which can further improve the space occupied by the battery device 100 in the height direction.

[0072] This application proposes a vehicle including the battery device 100 in the above embodiments, which has the same technical effects as the battery device 100 described above, and will not be repeated here.

[0073] The battery device 100 and other components and operations of the vehicle according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0074] 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 the present invention. 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.

[0075] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that, include: The housing (10) includes: a frame (11) and a crossbeam (12) and a longitudinal beam (13) disposed within the frame (11), the crossbeam (12), the longitudinal beam (13) and the frame (11) defining a plurality of spaced-apart accommodating spaces, at least a portion of which are formed as battery spaces; Battery cells (20) are arranged in groups within the battery space; in A reinforcing member is provided between the crossbeam (12) and the longitudinal beam (13), and / or between the crossbeam (12) and the frame (11), and / or between the first beam (111) of the frame (11) extending in a first direction and the second beam (112) of the frame (11) extending in a second direction, wherein the first direction and the second direction have an angle.

2. The battery device according to claim 1, characterized in that, The crossbeam (12) includes: end crossbeams (121) spaced apart in the first direction and at least one intermediate crossbeam (122) located between the two end crossbeams (121), and the reinforcing member includes a first reinforcing member (31), which is disposed between the intermediate crossbeam (122) and the frame (11).

3. The battery device according to claim 2, characterized in that, The first reinforcing member (31) includes a first connecting seat (311) and a first connecting protrusion (312). The first connecting protrusion (312) extends into the intermediate crossbeam (122). The first connecting seat (311) is connected to the first beam (111), and the orthographic projection profile of the first connecting seat (311) in the second direction is larger than the orthographic projection profile of the first connecting protrusion (312).

4. The battery device according to claim 2, characterized in that, The longitudinal beam (13) is at least one, the longitudinal beam (13) is connected to the cross beam (12), and a clearance recess (12a) is provided on the area where the cross beam (12) is connected to the cross beam (12). The reinforcing member includes a second reinforcing member (32), the second reinforcing member (32) is at least provided in the clearance recess (12a) of the intermediate cross beam (122), and is connected to the intermediate cross beam (122) and the longitudinal beam (13).

5. The battery device according to claim 4, characterized in that, The second reinforcing member (32) includes: a second connecting seat (321) and connecting ears (322) located on both sides of the second connecting seat (321) in the second direction, the second connecting seat (321) extending into the relief recess (12a), and the connecting ears (322) being connected to the longitudinal beam (13).

6. The battery device according to claim 2, characterized in that, At least one second beam (112) includes a straight beam segment (1121) and an inclined beam segment (1122), and the second beam (112) defines an electrical space for accommodating electrical components between the end beam (121) and the reinforcement further includes a third reinforcement (33), which is disposed between the end beam (121) defining the electrical space and the frame (11).

7. The battery device according to claim 6, characterized in that, The third reinforcing member (33) includes a second connecting protrusion (331) and a connecting plate (332). The second connecting protrusion (331) extends into the end beam (121), and the connecting plate (332) is connected to the first beam (111). The connecting plate (332) is constructed as a trapezoidal plate.

8. The battery device according to claim 1, characterized in that, The reinforcing member further includes a fourth reinforcing member (34), which is disposed between the first beam (111) and the second beam (112), and the fourth reinforcing member (34) includes a third connecting protrusion (341) and a fourth connecting protrusion (342), wherein the third connecting protrusion (341) is inserted into the first beam (111) and the fourth connecting protrusion (342) is inserted into the second beam (112).

9. The battery device according to any one of claims 1-8, characterized in that, The battery device further includes: a bottom protective plate (40), a lower cooling plate (60), and an upper cooling plate (50). The bottom protective plate (40) is connected to the housing (10). The lower cooling plate (60) is located on the side of the bottom protective plate (40) facing the housing (10). The lower cooling plate (60) and the upper cooling plate (50) are located on both sides of the battery cell (20). The upper cooling plate (50) is constructed as the top cover of the housing (10). A uniform temperature heat conduction structure (70) is provided between the upper cooling plate (50) and the battery cell (20) and between the lower cooling plate (60) and the battery cell (20).

10. A vehicle, characterized in that, include: The battery device according to any one of claims 1-9.

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