Case, battery device, and vehicle

Abstract

The application discloses a box, a battery device and a vehicle. The box comprises a bottom plate and a frame. The frame is arranged around the periphery of the bottom plate and defines a containing space. A first beam is arranged in the containing space. The first beam extends in a first direction and is connected to the frame in a second direction to divide the containing space into an electrical area and an energy area. The bottom plate comprises an energy area bottom plate and an electrical area bottom plate. The frame comprises a first frame arranged opposite in the first direction and a second frame arranged opposite in the second direction. The second frame, the electrical area bottom plate and the first beam that participate in defining the electrical area are configured as an integral piece. Thus, the force bearing interface can be expanded, the structural rigidity of the box, especially the bending and torsional rigidity, can be significantly improved, the structural rigidity and the anti-vibration fatigue performance of the box can be improved, the rigidity and the modal main frequency of the battery device can be improved, the deformation amplitude of the box structure in the vibration process can be reduced, the stress level can be reduced, and the fatigue strength can be improved.

Description

Technical Field

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

[0002] In related technologies, the connection points between the battery pack housing and the vehicle body include: connection points around the battery pack and connection points inside the battery pack.

[0003] However, due to limited structural space of the battery device or the internal layout requirements of the battery pack, it is impossible to lay out internal connection points. The battery device can only be connected to the vehicle body through connection points on the periphery. This can lead to a decrease in the rigidity and frequency of the battery device. Under the vehicle's working load, this can cause problems such as excessive local structural stress and fatigue cracking of the battery device, and even affect vehicle safety. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a housing with stronger structural rigidity, better resistance to vibration fatigue, and higher safety and reliability.

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

[0006] This application also proposes a vehicle having the aforementioned battery device.

[0007] In a first aspect, this application provides a housing, the housing comprising: a base plate and a frame, the frame surrounding the periphery of the base plate and defining an accommodating space; wherein a first beam is disposed within the accommodating space, the first beam extending along a first direction and connected to the frame in a second direction, to divide the accommodating space into a spaced-apart electrical zone and an energy zone; the base plate comprises: an energy zone base plate and an electrical zone base plate, the frame comprises: a first frame disposed opposite to each other in the first direction and a second frame disposed opposite to each other in the second direction, the second frame participating in defining the electrical zone, the electrical zone base plate and the first beam being constructed as a single unit, the first direction and the second direction having an angle between them.

[0008] According to the embodiments of this application, the second frame, the first beam, and the electrical area base plate are constructed as a single unit, which can expand the load-bearing interface, significantly improve the structural stiffness of the housing, especially the bending and torsional stiffness, improve the structural stiffness and vibration fatigue resistance of the housing, improve the stiffness and modal frequency of the battery device, reduce the deformation amplitude of the housing structure during vibration, thereby reducing the stress level, improving fatigue strength, and thus improving the safety and reliability of the vehicle.

[0009] According to some embodiments of this application, a second beam is further provided in the electrical zone, the second beam extending along the second direction and connected to the second frame and the first beam in the first direction; a third beam is further provided in the energy zone, the third beam extending along the second direction and connected to the second frame and the first beam in the first direction.

[0010] According to some embodiments of this application, the second beam and the third beam are disposed opposite to each other in the second direction.

[0011] According to some embodiments of this application, the housing further includes a reinforcing member connected to the first beam, the second beam, and the third beam.

[0012] According to some embodiments of this application, the reinforcing member includes: a body portion and a connecting plate located on the third direction side of the body portion, the connecting plate being connected to the first beam and the second beam, the third direction having an angle with the first direction, and the third direction being different from the first direction.

[0013] According to some embodiments of this application, the body portion includes a first enclosure portion and a second enclosure portion opposite to each other in the first direction, wherein the first enclosure portion and the second enclosure portion are respectively connected to the second beam and the first beam on both sides of the second beam.

[0014] According to some embodiments of this application, both the first enclosure portion and the second enclosure portion include: a first extension segment extending at least partially along the first direction and a second extension segment extending at least partially along the second direction, wherein the first extension segment is connected to the first beam and the second extension segment is connected to the second beam.

[0015] According to some embodiments of this application, the body portion further includes a connecting segment, which is located on the same side of the first enclosure portion and the second enclosure portion, and is connected to the first enclosure portion, the second enclosure portion and the connecting plate.

[0016] Secondly, this application proposes a battery device, including: the housing described in the above embodiments.

[0017] Thirdly, this application proposes a vehicle comprising: 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 schematic diagram of the housing according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram showing the fit of the second frame, electrical zone base plate, first beam, second beam, third beam, reinforcing member, and plug according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram showing the fit of the first beam, second beam, third beam, and reinforcing member according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram showing the fit of the first beam, second beam, third beam, reinforcing member, and plug according to an embodiment of this application;

[0024] Figure 5 This is a top view of the first beam, second beam, third beam, and reinforcing member according to an embodiment of this application;

[0025] Figure 6 yes Figure 5 A cross-sectional view of the midline AA.

[0026] Figure label:

[0027] Box 100,

[0028] Base plate 10, Energy area base plate 11, Electrical area base plate 12,

[0029] Border 20, first border 21, second border 22

[0030] The first beam is 30, the second beam is 40, and the third beam is 50.

[0031] Reinforcing member 60, main body 61, first extension 61a, second extension 61b, first enclosure 611, second enclosure 612, connecting section 613, connecting plate 62.

[0032] Block 70,

[0033] Electrical zone a, energy zone b, weld seam c. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] In this application, "multiple" means two or more (including two).

[0044] In the prior art, the battery pack housing has peripheral connection points on its periphery and a central connection point in the middle area. Both peripheral and central connection points are used to connect to the vehicle body.

[0045] However, when the internal space of the battery box is limited or the layout requirements are restricted, the central connection point cannot be installed inside the box. It can only be connected to the vehicle body through the peripheral connection points. This will lead to a decrease in the rigidity and frequency of the battery device. Under the vehicle's working load, this will cause problems such as excessive local structural stress and fatigue cracking in the battery box, which will affect vehicle safety.

[0046] Based on this, this application proposes a housing that improves the structural rigidity and vibration fatigue resistance of the housing by constructing the electrical area base plate, the first beam and the second frame as a single unit, thereby improving the rigidity and modal frequency of the battery device, reducing the deformation amplitude of the housing structure during vibration, reducing stress level, improving fatigue strength, and thus improving the safety and reliability of the vehicle.

[0047] The following is for reference. Figures 1-6 The present invention describes a housing 100, a battery device, and a vehicle according to an embodiment of the present invention.

[0048] like Figure 1 and Figure 2As shown, this application provides a housing 100, which includes a base plate 10 and a frame 20. The frame 20 surrounds the periphery of the base plate 10 and defines an accommodating space. A first beam 30 is provided in the accommodating space. The first beam 30 extends along a first direction and is connected to the frame 20 in a second direction to divide the accommodating space into an electrical zone a and an energy zone b. The base plate 10 includes an energy zone base plate 11 and an electrical zone base plate 12. The frame 20 includes a first frame 21 disposed opposite to each other in the first direction and a second frame 22 disposed opposite to each other in the second direction. The second frame 22, the electrical zone base plate 12, and the first beam 30 that define the electrical zone a are constructed as a single unit, and the first direction and the second direction have an angle between them.

[0049] It should be noted that the first direction can be the length direction of the box 100, and the corresponding second direction can be the width direction of the box 100, or the first direction can be the width direction of the box 100, and the corresponding second direction can be the length direction of the box 100.

[0050] Specifically, the accommodating space within the housing 100 can be divided into two areas by the first beam 30 and the second beam 40 located within the housing 100, corresponding to the electrical area a and the energy area b, respectively. The electrical area a is used to house electrical components (such as battery management units), and the energy area b is used to house individual battery cells (such as multiple battery cells forming a module, with one or more battery modules located in the energy area b). The base plate 10 is constructed in two separate parts, namely the electrical area base plate 12 and the energy area base plate 11. The frame 20 includes a first frame 21 extending in a first direction and a second frame 22 extending in a second direction. The second frame 22 defining the electrical area a, the first beam 30, and the electrical area base plate 12 can be constructed as a single unit.

[0051] It should be noted that the second frame 22, the first beam 30 and the electrical area base plate 10 are constructed as a single unit, which can significantly improve the overall structural rigidity of the electrical area a frame, thereby improving the overall structural rigidity of the box 100.

[0052] According to the embodiments of this application, the housing 100, the second frame 22, the first beam 30, and the electrical area base plate 12 are constructed as a single unit, which can expand the load-bearing interface, significantly improve the structural stiffness of the housing 100, especially the bending and torsional stiffness, improve the structural stiffness and vibration fatigue resistance of the housing 100, improve the stiffness and modal frequency of the battery device, reduce the deformation amplitude of the housing 100 structure during vibration, thereby reducing the stress level, improving fatigue strength, and thus improving the safety and reliability of the vehicle.

[0053] Combination Figure 1 and Figure 3As shown, according to some embodiments of this application, a second beam 40 is further provided in the electrical zone a, the second beam 40 extends along a second direction and is connected to the second frame 22 and the first beam 30 in a first direction; a third beam 50 is further provided in the energy zone b, the third beam 50 extends along a second direction and is connected to the second frame 22 and the first beam 30 in a first direction.

[0054] In other words, the electrical zone a is provided with a second beam 40 that is spaced apart in the first direction and extends along the second direction. The second beam 40 can not only divide the electrical zone a into multiple first accommodating cavities to house different electrical components in different first accommodating cavities, thereby improving the electrical isolation effect between electrical components and improving the safety and reliability of the battery device, but also improve the structural strength and rigidity of the electrical zone a. Correspondingly, the energy zone b is provided with a third beam 50 that is spaced apart in the first direction and extends along the second direction. The third beam 50 can not only divide the energy zone b into multiple second accommodating cavities, each of which can house one or more battery modules or battery cells to improve the fixing stability and reliability of the battery modules or battery cells, but also improve the structural strength and rigidity of the energy zone b.

[0055] It should be noted that the second beam 40 is connected to the second frame 22, which can also enrich the mechanical transmission path in the electrical zone a. When the second frame 22 is subjected to an impact, the impact energy can be transferred through the second beam 40 to reduce the probability of collapse and structural damage in the electrical zone a. Similarly, the third beam 50 is connected to the second frame 22, which can also enrich the mechanical transmission path in the energy zone b. When the second frame 22 is subjected to an impact, the impact energy can be transferred through the third beam 50 to reduce the probability of collapse and structural damage in the energy zone b.

[0056] like Figure 1 As shown, according to some embodiments of this application, the second beam 40 and the third beam 50 are arranged opposite each other in the second direction.

[0057] In other words, in the second direction, a second beam 40 and a third beam 50 are provided between the two second frame frames 22. One end of the second beam 40 is connected to the second frame frame 22, and the other end is connected to the first beam 30. One end of the third beam 50 is connected to the first beam 30 and is opposite to the second beam 40. The other end is connected to the other second frame frame 22. This allows impact energy to be transmitted through the second frame frame 22 to the second beam 40, the first beam 30, the third beam 50 and then to the other second frame frame 22, or through the second frame frame 22 to the third beam 50, the first beam 30, the second beam 40 and then to the other second frame frame 22. This improves the overall impact resistance of the box 100 in the second direction and enhances the structural strength and rigidity of the box 100.

[0058] Combination Figures 2-6 As shown, according to some embodiments of this application, the box body 100 further includes a reinforcing member 60, which is connected to the first beam 30, the second beam 40 and the third beam 50.

[0059] Specifically, the reinforcing member 60 is disposed in the area where the second beam 40 and the third beam 50 are opposite to each other, and the reinforcing member 60 can be connected to the first beam 30, the second beam 40 and the third beam 50 at the same time. The reinforcing member 60 can form a reinforced connection structure in the area where the first beam 30, the second beam 40 and the third beam 50 are located, which can further improve the bending stiffness of the box 100 and the fatigue strength at the corner position.

[0060] like Figure 3 , Figure 5 as well as Figure 6 As shown, according to some embodiments of this application, the reinforcing member 60 includes: a body portion 61 and a connecting plate 62 located on the third direction side of the body portion 61. The connecting plate 62 is connected to the second beam 40 and the first beam 30. The third direction has an angle with the first direction, and the third direction is different from the first direction.

[0061] It should be noted that the third direction is the altitude direction.

[0062] The main body 61 is used to connect to the first beam 30, the second beam 40 and the third beam 50 in the first direction and the second direction respectively, while in the third direction, it can be connected to the second beam 40 and the first beam 30 simultaneously through the connecting plate 62.

[0063] Therefore, the connection strength and stiffness between the reinforcing member 60 and the first beam 30 and the second beam 40 can be improved by the connecting plate 62, and structural reinforcement in the height direction can be achieved.

[0064] Combination Figure 2 and Figure 3 As shown, according to some embodiments of this application, the body portion 61 includes a first enclosing portion 611 and a second enclosing portion 612 opposite to each other in a first direction. The first enclosing portion 611 and the second enclosing portion 612 are respectively connected to the second beam 40 and the first beam 30 on both sides of the second beam 40.

[0065] Specifically, the first enclosing portion 611 can be connected to the second beam 40 on both sides in the second direction, and the second enclosing end can be connected to the third beam 50 on both sides in the second direction. The first enclosing portion 611 and the second enclosing portion 612 can be arranged opposite to each other in the first direction and connected to the first beam 30 to form a structural reinforcement structure in the first and second directions, effectively improving the structural strength and structural stiffness of the intersection area of ​​multiple beams.

[0066] like Figure 3and Figure 4 As shown, according to some embodiments of this application, both the first enclosure portion 611 and the second enclosure portion 612 include: a first extension segment 61a extending at least partially along a first direction and a second extension segment 61b extending at least partially along a second direction, the first extension segment 61a being connected to the first beam 30 and the second extension segment 61b being connected to the second beam 40.

[0067] Specifically, the first extension segment 61a is connected to the second beam 40 or the third beam 50 in the second direction, and the second extension segment 61b is connected to the first beam 30 in the first direction. The first beam 30 and the second beam 40, the first beam 30 and the third beam 50, the first enclosure portion 611 and the first beam 30, the second beam 40, and the second enclosure portion 612 and the first beam 30 and the third beam 50 are all welded and fixed, that is, a multi-layer weld c is formed between the first beam 30 and the second beam 40, between the first beam 30 and the third beam 50, between the first beam 30 and the first extension segment 61a, and between the second beam 40 and the second extension segment 61b.

[0068] In this way, the multi-layer welded connection structure between the first beam 30, the second beam 40, the third beam 50 and the reinforcing member 60 can further improve the structural strength and rigidity of the box body 100, reduce the deformation range of the box body 100, reduce the stress level and improve the fatigue strength.

[0069] It should be noted that both the first enclosure portion 611 and the second enclosure portion 612 are L-shaped, each including a first extension section 61a and a second extension section 61b. An inclined section can be further provided between the first extension section 61a and the second extension section 61b, so that while the first enclosure portion 611 and the second enclosure portion 612 are connected to the second beam 40 on both sides of the second beam 40, they can avoid the weld seam c between the second beam 40 and the first beam 30, thereby reducing the probability of interference, reducing the assembly difficulty, and improving the assembly efficiency.

[0070] Combination Figure 5 and Figure 6 As shown, according to some embodiments of this application, the main body 61 further includes a connecting segment 613, which is located on the same side of the first enclosure portion 611 and the second enclosure portion 612, and is connected to the first enclosure portion 611, the second enclosure portion 612 and the connecting plate 62.

[0071] Therefore, by setting the connecting section 613, the overall structure of the reinforcing member 60 is made more stable and reliable, and the second beam 40 can be prevented from being exposed on the third-direction side, reducing the probability of foreign objects entering the space defined by the reinforcing member 60, the second beam 40, the first beam 30 and the third beam 50, so as to reduce the probability of structural noise in the housing 100.

[0072] It should be noted that, see Figure 2 , Figure 4 as well as Figure 6 The second beam 40 can be connected to the first beam 30 through the plug 70, and similarly the third beam 50 can also be connected to the first beam 30 through the plug 70.

[0073] This application proposes a battery device, including: the housing 100 in the above embodiments.

[0074] According to the battery device of the present application embodiment, by adopting the above-mentioned housing 100, the overall structural reliability and stability of the battery device are higher, the battery device is safer and more durable, has a longer service life, and the battery device has higher fixation stability and reliability on the vehicle body, as well as higher impact resistance.

[0075] This application proposes a vehicle including the battery device described in the above embodiments.

[0076] The vehicle according to the embodiments of this application uses the above-described battery device, and the technical effects are the same as those of the above-described battery device, which will not be repeated here.

[0077] The housing 100, battery device, and other components and operations of the vehicle according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0078] 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.

[0079] 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 box, characterized in that, The enclosure includes: A base plate (10) and a frame (20), wherein the frame (20) surrounds the periphery of the base plate (10) and defines an accommodating space; wherein The accommodating space is provided with a first beam (30), which extends along a first direction and is connected to the frame (20) in a second direction to divide the accommodating space into a spaced electrical area (a) and an energy area (b). The base plate (10) includes an energy zone base plate (11) and an electrical zone base plate (12). The frame (20) includes a first frame (21) disposed opposite to each other in the first direction and a second frame (22) disposed opposite to each other in the second direction. The second frame (22) that participates in defining the electrical zone (a), the electrical zone base plate (12) and the first beam (30) are constructed as a single piece. The first direction and the second direction have an angle between them.

2. The housing according to claim 1, characterized in that, The electrical zone (a) is further provided with a second beam (40), which extends along the second direction and is connected to the second frame (22) and the first beam (30) in the first direction; the energy zone (b) is further provided with a third beam (50), which extends along the second direction and is connected to the second frame (22) and the first beam (30) in the first direction.

3. The housing according to claim 2, characterized in that, The second beam (40) and the third beam (50) are arranged opposite each other in the second direction.

4. The housing according to claim 2, characterized in that, The housing also includes a reinforcing member (60), which is connected to the first beam (30), the second beam (40) and the third beam (50).

5. The housing according to claim 4, characterized in that, The reinforcing member (60) includes: a body part (61) and a connecting plate (62) located on the third direction side of the body part (61). The connecting plate (62) is connected to the first beam (30) and the second beam (40). The third direction has an angle with the first direction and is different from the first direction.

6. The housing according to claim 5, characterized in that, The main body (61) includes a first enclosure (611) and a second enclosure (612) opposite to each other in the first direction. The first enclosure (611) and the second enclosure (612) are respectively connected to the second beam (40) and the first beam (30) on both sides of the second beam (40).

7. The housing according to claim 6, characterized in that, Both the first enclosure (611) and the second enclosure (612) include: a first extension segment (61a) extending at least partially along the first direction and a second extension segment (61b) extending at least partially along the second direction, the first extension segment (61a) being connected to the first beam (30) and the second extension segment (61b) being connected to the second beam (40).

8. The housing according to claim 7, characterized in that, The main body (61) further includes a connecting section (613), which is located on the same side of the first enclosure (611) and the second enclosure (612), and is connected to the first enclosure (611), the second enclosure (612) and the connecting plate (62).

9. A battery device, characterized in that, include: The housing as described in any one of claims 1-8.

10. A vehicle, characterized in that, include: The battery device according to claim 9.

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