Box cover and battery box

Abstract

The utility model provides a box cover and a battery box. The box cover comprises a layer plate assembly, the layer plate assembly comprises at least two layers of layer plate pieces, the at least two layers of layer plate pieces are arranged at intervals in the thickness direction of the battery box, and the layer plate assembly is provided with a cavity; and the buffer piece is positioned in the cavity. According to the battery box, the overall rigidity of the box cover is improved, good buffering and energy absorption characteristics are achieved, and the safety of the battery box is high.

Description

TECHNICAL FIELD

[0001] The application relates to a box cover and a battery box, and belongs to the technical field of new energy batteries. BACKGROUND

[0002] With the diversity of market development, automobile manufacturers and new energy battery companies are seeking different vehicle models, and the safety of new energy vehicle power battery boxes is a social concern.

[0003] In the process of conceiving and implementing the present application, the applicant found that at least the following problems exist: The CTB (cell to body) battery box on the current market is mostly integrated with the vehicle body, and the battery box upper cover is used as the passenger compartment floor, that is, the design state is that the passengers directly step on the battery box cover. Since the current box cover has low rigidity, when the box cover itself is insufficient to bear the vehicle members or heavy objects, the box cover is prone to deformation and contact with the internal battery and electrical modules. In the long run, the risk of rupture or insulation failure of the battery and electrical modules is greatly increased.

[0004] The foregoing narrative is to provide general background information and does not necessarily constitute the prior art. CONTENT OF THE UTILITY MODEL

[0005] The application provides a box cover and a battery box, which improves the overall rigidity of the box cover and has good buffering and energy absorption characteristics, and the safety of the battery box is higher.

[0006] The application provides a box cover for a battery box, which comprises:

[0007] A layer plate assembly comprising at least two layer plate pieces, the at least two layer plate pieces being arranged at intervals along the thickness direction of the battery box, and the layer plate assembly having a cavity;

[0008] A buffer piece located in the cavity.

[0009] The application has the beneficial effects that: through the at least two layer plate pieces, the overall rigidity of the box cover is significantly improved, which can effectively disperse and bear the pressure and load from the outside, ensuring that the vehicle members or heavy objects can be carried without causing pressure or contact to the internal battery and electrical modules; in addition, through the buffer piece, the box cover has good buffering and energy absorption characteristics. In a dynamic impact scenario, the buffer piece can effectively absorb and disperse impact energy, reduce the force transmitted to the battery and electrical components, and thus reduce the risk of structural deformation.

[0010] In some optional embodiments, the layer plate assembly further comprises a support piece arranged in the cavity and extending along the thickness direction of the battery box, and the support piece is used to support the layer plate pieces.

[0011] It should be noted that the support is arranged in the cavity and extends along the thickness direction of the battery box, which can effectively support the layer plate. That is, the addition of the support enables the layer plate assembly to withstand greater load, and by providing additional support, the support effectively prevents the layer plate from deforming when subjected to external impact or pressure, thereby protecting the internal battery and electrical components and increasing the overall stability of the layer plate assembly to prevent excessive deformation of the layer plate under external force.

[0012] In some optional embodiments, the support is a plurality of supports, the plurality of supports are arranged at intervals, and the cavity is divided into a plurality of cavities.

[0013] It should be noted that the interval arrangement of the plurality of supports forms a grid-shaped support structure, which can effectively disperse and withstand external pressure from various directions, thereby improving the overall strength and stability of the layer plate assembly.

[0014] In some optional embodiments, the at least two layer plates include a first layer plate and a second layer plate, and the first layer plate is located above the second layer plate along the thickness direction of the battery box.

[0015] It should be noted that by arranging the first layer plate above the second layer plate, a multi-layer protection structure is formed. This design can effectively disperse and absorb external impact force, provide higher impact resistance and pressure resistance, and protect the battery and electrical components inside the battery box.

[0016] In some optional embodiments, the layer plate assembly further comprises a sealing member connected between the first layer plate and the second layer plate and located around the first layer plate and the second layer plate.

[0017] The sealing member and the at least two layer plates form a cavity.

[0018] It should be noted that the sealing member connects the first layer plate and the second layer plate together to form a closed structure. This design improves the overall rigidity and stability of the layer plate assembly, which can more effectively resist external pressure and impact. The cavity formed by the sealing member provides good sealing performance to prevent moisture, dust and other environmental factors from entering the interior of the battery box, thereby protecting the battery and electrical components from environmental influences.

[0019] In some optional embodiments, the buffer is foamed glue, and is configured to be filled into the cavity.

[0020] It should be noted that the foamed glue material has good elasticity and energy absorption characteristics. When subjected to external impact, the foamed glue can effectively absorb and disperse impact energy, reduce the direct impact on the internal components of the battery box, and reduce the risk of damage.

[0021] In some optional embodiments, the first layer plate member is provided with glue injection holes and exhaust holes, the glue injection holes are located in the middle of the first layer plate member, and the exhaust holes are located at the edges of the first layer plate member.

[0022] It should be noted that by providing glue injection holes in the middle of the first layer plate member, the foaming glue can be uniformly spread from the center to the surrounding, filling the entire cavity, which helps to achieve uniform material distribution and ensure the consistency of the buffering performance. In addition, the exhaust holes at the edges allow air to be smoothly discharged during the pouring process, preventing the formation of air bubbles and improving the density and overall performance of the foaming glue, avoiding structural weaknesses caused by air bubbles.

[0023] In some optional embodiments, the glue injection holes and the exhaust holes are both multiple, the multiple glue injection holes are arranged at intervals along the length direction of the box cover, and the multiple exhaust holes are arranged at intervals along the length direction of the box cover.

[0024] Along the width direction of the box cover, two of the multiple exhaust holes are located on opposite sides of one glue injection hole.

[0025] It should be noted that the multiple glue injection holes are arranged at intervals along the length direction of the box cover, ensuring that the foaming glue can be injected at multiple points at the same time, which helps to achieve uniform distribution of the foaming glue in the entire cavity and avoid the problem of insufficient local filling.

[0026] In some optional embodiments, the layer plate member is an extrusion-formed plate-shaped member.

[0027] It should be noted that by optimizing the design of extrusion forming, the structural strength and rigidity of the plate-shaped member can be improved, and its impact resistance and deformation resistance can be enhanced.

[0028] In addition, the application also provides a battery box comprising the above-mentioned box cover.

[0029] The box cover and the battery box provided by the application comprise a box cover; the box cover comprises a layer plate assembly, the layer plate assembly comprises at least two layer plate members, the at least two layer plate members are arranged at intervals along the thickness direction of the battery box, and the layer plate assembly has a cavity; and a buffer member is located in the cavity.

[0030] By using at least two layer plate members, the overall rigidity of the box cover is significantly improved, which can effectively disperse and withstand the pressure and load from the outside, ensuring that the battery and electrical components inside can be carried by the members or heavy objects without being pressed or contacted. In addition, by using the buffer member, the box cover has good buffering and energy absorption characteristics. In a dynamic impact scenario, the buffer member can effectively absorb and disperse the impact energy, reducing the force transmitted to the battery and electrical components, thereby reducing the risk of structural deformation. BRIEF DESCRIPTION OF DRAWINGS

[0031] The above and other objects, features and advantages of the present embodiments will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which:

[0032] Figure 1 FIG. 1 is a structural schematic diagram of a box cover according to an embodiment of the present application;

[0033] Figure 2 FIG. 2 is a partial enlarged view of I in FIG. 1; Figure 1

[0034] Figure 3 FIG. 3 is a partial enlarged view of II in FIG. 1; Figure 1

[0035] Figure 4 FIG. 4 is a structural schematic diagram of the box cover without a buffer member according to an embodiment of the present application;

[0036] Figure 5 FIG. 5 is a partial enlarged view of III in FIG. 4; Figure 4

[0037] FIG. 6 is a structural schematic diagram of the box cover with a buffer member according to an embodiment of the present application; Figure 6

[0038] Figure 7 FIG. 7 is a partial enlarged view of IV in FIG. 6; Figure 6

[0039] Figure 8 FIG. 8 is a structural schematic diagram of the box cover according to an embodiment of the present application;

[0040] Reference Signs:

[0041] 100 - box cover;

[0042] 110 - panel assembly;

[0043] 111 - first panel member;

[0044] 1111 - glue injection hole;

[0045] 1112 - exhaust hole;

[0046] 112 - second panel member;

[0047] 113 - support member;

[0048] 114 - blocking member;

[0049] 120 - buffer member. DETAILED DESCRIPTION

[0050] ​​​​In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. All other embodiments obtained fall within the protection scope of the present application. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0051] In the present application, unless specifically defined and limited otherwise, the terms "mount", "connect", "connection", "fixed", and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless specifically defined otherwise. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0053] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, a person of ordinary skill in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0054] In conceiving and implementing this application, the applicant discovered at least the following problems: Currently, most CTB (cell-to-body) battery box designs on the market are integrated with the vehicle body, using the battery box cover as the passenger compartment floor. This means that passengers are designed to stand directly on the battery box cover. Because the current cover has low rigidity, it is prone to deformation when it cannot support the weight of occupants or heavy objects, potentially contacting the internal battery and electrical modules. Over time, this significantly increases the risk of battery and electrical module breakage or insulation failure.

[0055] The proposed cover, through at least two layers of laminated panels, significantly improves the overall rigidity of the cover, effectively distributing and bearing external pressure and loads. This ensures it can support vehicle occupants or heavy objects without causing pressure or contact with the internal battery and electrical modules. Furthermore, the buffer components provide excellent cushioning and energy absorption characteristics. In dynamic impact scenarios, the buffer components effectively absorb and disperse impact energy, reducing the force transmitted to the battery and electrical components, thereby lowering the risk of structural deformation.

[0056] The box cover provided in this application will be described in detail below with reference to specific embodiments.

[0057] Figure 1 This is a first-view structural schematic diagram of the box lid according to an embodiment of this application. Figure 2 for Figure 1 A magnified view of a section at point I. Figure 3 for Figure 1 A magnified view of a section at point II. Figure 4 This is a schematic diagram of the box lid without a buffer element from a second perspective, according to an embodiment of this application. Figure 5 for Figure 4 A magnified view of a section at point III. Figure 6 This is a schematic diagram of the box lid with a buffer element from a second perspective, according to an embodiment of this application. Figure 7 for Figure 6 A magnified view of section IV in the middle.

[0058] like Figures 1 to 7 As shown in the embodiment of this application, a cover 100 is provided for a battery box. The cover 100 includes:

[0059] The shelf assembly 110 includes at least two shelf members, which are spaced apart along the thickness direction of the battery box, and the shelf assembly 110 has a cavity.

[0060] The buffer 120 is located inside the cavity.

[0061] It should be noted that by adopting the design of the multi-layered plate member, the overall structural strength of the box cover 100 is significantly improved. It can effectively resist external pressure and impact, and protect the battery units inside the battery box.

[0062] As shown in Figure 1 and Figure 2 The thickness direction of the battery box is Z.

[0063] In addition, in some embodiments, although a multi-layer structure is adopted, by reasonably designing the material and thickness of the plate member, the strength and buffering performance can be improved without significantly increasing the weight, thereby optimizing the overall weight of the battery box.

[0064] In some embodiments, the plate member is two layers, of course, the plate member can also be three layers, four layers or more layers, and compared with a single-layer structure, at least two layers of the plate member can significantly improve the rigidity of the box cover 100.

[0065] In some embodiments, the plate assembly 110 has a cavity that can accommodate the buffer member 120, which can effectively absorb and disperse external impact force, further protecting the battery from vibration and impact damage. This is crucial for prolonging the battery life and improving safety.

[0066] In addition, the cavity structure helps the thermal management of the battery box.

[0067] In some embodiments, the buffer member 120 material can be selected to have certain thermal conductivity, helping to dissipate heat, preventing the battery from overheating, and improving the working efficiency and safety of the battery.

[0068] Exemplarily, the size of the cavity can be adjusted according to actual conditions, and the embodiments of the present application are not limited here.

[0069] In the embodiments of the present application, the plate member can be provided in a rectangular structure. The buffer member 120 can be located inside the plate assembly 110.

[0070] The size of the plate assembly 110 described above can be set according to actual needs, and the embodiments of the present application are not limited here.

[0071] In addition, it should be noted that the shape of the plate assembly 110 is not limited in the present embodiment, for example, the plate assembly 110 can be in the shape of a rectangular solid, a cylindrical solid, etc. Regular shape, of course, the plate assembly 110 can also be in other irregular shapes.

[0072] In one possible implementation, the plate assembly 110 can be in a rectangular structure.

[0073] In addition, it should be noted that the shape of the shelf assembly 110 is not limited in this embodiment. For example, the shelf assembly 110 can be a regular shape such as a cuboid or a cylinder. Of course, the shelf assembly 110 can also be other irregular shapes.

[0074] Through the aforementioned configuration, namely, the use of at least two layers of laminated panels, the overall rigidity of the cover 100 is significantly improved. This effectively disperses and withstands external pressure and loads, ensuring it can support vehicle occupants or heavy objects without causing pressure or contact with the internal battery and electrical modules. Furthermore, the buffer 120 provides the cover 100 with excellent cushioning and energy absorption characteristics. In dynamic impact scenarios, the buffer 120 effectively absorbs and disperses impact energy, reducing the force transmitted to the battery and electrical components, thereby lowering the risk of structural deformation.

[0075] like Figures 1 to 7 As shown, in some optional embodiments, the shelf assembly 110 further includes a support member 113 disposed within the cavity and extending along the thickness direction of the battery box, the support member 113 being used to support the shelf member.

[0076] It should be noted that the support member 113 is disposed within the cavity and extends along the thickness direction of the battery box, effectively supporting the shelf assembly. That is, the addition of the support member 113 enables the shelf assembly 110 to withstand greater loads. By providing additional support, the support member 113 effectively prevents the shelf assembly from deforming under external impact or pressure, thereby protecting the internal battery and electrical components, increasing the overall stability of the shelf assembly 110, and preventing excessive deformation of the shelf assembly under external forces.

[0077] In some embodiments, the design of the support 113 can optimize the use of materials, thereby improving structural strength and stability without significantly increasing weight.

[0078] In addition, the support 113 can effectively absorb and disperse vibration energy, reduce the impact of vibration on the battery and electrical components, and improve the durability and service life of the battery box.

[0079] In some alternative embodiments, there are multiple supports 113, which are spaced apart and divide the cavity into multiple chambers.

[0080] It should be noted that the spacing of multiple support members 113 forms a grid-like support structure. This structure can effectively distribute and withstand external pressure from all directions, improving the overall strength and stability of the shelf assembly 110.

[0081] In addition, by dividing the cavity into multiple chambers, the support 113 can provide multi-point support when impacted, further enhancing the impact resistance of the structure and reducing the risk of deformation and damage.

[0082] Figure 8 As shown in the structural schematic diagram of the third perspective of the box cover of the embodiment of the present application, in some optional embodiments, the at least two layer plate members include a first layer plate member 111 and a second layer plate member 112, and the first layer plate member 111 is located above the second layer plate member 112 along the thickness direction of the battery box. Figures 1 to 8

[0083] It should be noted that by placing the first layer plate member 111 above the second layer plate member 112, a multi-layer protection structure is formed. This design can effectively disperse and absorb external impact forces, providing higher impact resistance and compression resistance to protect the batteries and electrical components inside the battery box.

[0084] By distributing the load between the upper and lower profiles, the internal batteries and electrical modules are effectively protected from damage caused by external pressure or impact.

[0085] Since the upper cover can carry heavy objects without affecting the internal components, the safety of the battery box is improved in the event of accidents such as collisions or overturning, reducing the risk of electrical failure and fire.

[0086] In some embodiments, the cavity between the first layer plate member 111 and the second layer plate member 112 can be used to isolate different functional areas, preventing the spread of faults and improving the safety and reliability of the battery box.

[0087] As shown in the structural schematic diagram of the third perspective of the box cover of the embodiment of the present application, in some optional embodiments, the layer plate assembly 110 further includes a sealing member 114 connected between the first layer plate member 111 and the second layer plate member 112, and located around the first layer plate member 111 and the second layer plate member 112. Figures 1 to 7

[0088] The sealing member 114 and the at least two layer plate members form a cavity.

[0089] It should be noted that the sealing member 114 connects the first layer plate member 111 and the second layer plate member 112 together to form a closed structure. This design improves the overall rigidity and stability of the layer plate assembly 110, which can more effectively resist external pressure and impact. The cavity formed by the sealing member 114 provides good sealing performance to prevent moisture, dust and other environmental factors from entering the interior of the battery box, thereby protecting the batteries and electrical components from environmental influences.

[0090] ​​In addition, the presence of the blocking member 114 makes the cavity a closed buffer area that can effectively absorb and disperse energy when impacted, reducing the impact on the internal components.

[0091] In some alternative embodiments, the buffer member 120 is foamed glue, and is configured to be poured into the cavity.

[0092] It should be noted that foamed glue has good elasticity and energy absorption characteristics. When impacted from the outside, the foamed glue can effectively absorb and disperse the impact energy, reducing the direct impact on the internal components of the battery box and reducing the risk of damage.

[0093] In addition, foamed glue generally has a low density, which allows it to provide effective buffering without significantly increasing the overall weight of the battery box, helping to achieve a lightweight design.

[0094] In some embodiments, foamed glue can be easily filled into a cavity of complex shape through a pouring process, forming a stable structure after curing, simplifying the manufacturing and assembly process.

[0095] In some embodiments, certain types of foamed glue have good thermal conductivity, which can help the battery box dissipate heat and maintain the battery within the optimal operating temperature range, improving its performance and safety.

[0096] As shown in Figures 1 to 3 In some alternative embodiments, the first layer plate member 111 is provided with a glue injection hole 1111 and an air vent hole 1112. The glue injection hole 1111 is located in the middle of the first layer plate member 111, and the air vent hole 1112 is located at the edge of the first layer plate member 111.

[0097] It should be noted that by providing the glue injection hole 1111 in the middle of the first layer plate member 111, the foamed glue can be evenly distributed from the center to the periphery, filling the entire cavity, which helps to achieve uniform material distribution and ensure the consistency of the buffering performance. In addition, the air vent hole 1112 at the edge allows air to be easily vented during the pouring process, preventing the formation of bubbles and improving the density and overall performance of the foamed glue, avoiding structural weaknesses caused by bubbles.

[0098] Specifically, by reasonably designing the glue injection and air vent paths, the amount of foamed glue can be optimized to reduce waste while ensuring complete filling of the cavity and improving material utilization efficiency. This hole design simplifies the pouring process of foamed glue, reduces the number of operation steps and time, improves production efficiency, and is suitable for large-scale production applications.

[0099] At the same time, it can be understood that uniform foamed glue filling and effective air venting help to form a complete sealing layer, enhancing the sealing performance of the battery box and preventing external contaminants from entering.

[0100] In some embodiments, the positions of the injection hole 1111 and the vent hole 1112 can be adjusted according to specific application requirements, providing design flexibility and making them suitable for battery boxes of different sizes and uses.

[0101] like Figures 1 to 3 As shown, in some optional embodiments, there are multiple glue injection holes 1111 and multiple vent holes 1112. The multiple glue injection holes 1111 are spaced apart along the length direction of the box cover 100, and the multiple vent holes 1112 are spaced apart along the length direction of the box cover 100.

[0102] Along the width of the cover 100, two of the plurality of vent holes 1112 are located on opposite sides of a glue injection hole 1111.

[0103] It should be noted that multiple injection holes 1111 are spaced apart along the length of the cover 100 to ensure that the expanding foam can be injected at multiple points simultaneously. This helps to achieve uniform distribution of the expanding foam throughout the cavity and avoids the problem of insufficient local filling.

[0104] It should be noted that multiple vent holes 1112 are spaced apart along the length of the cover 100, and in the width direction, two of the multiple vent holes 1112 are located on opposite sides of an injection hole 1111. This arrangement ensures that air can be smoothly discharged during the injection of the expanding foam, preventing the formation of air bubbles and improving the density and performance of the expanding foam.

[0105] It should be noted that, as Figure 1 As shown, the length direction of the lid 100 is X, and the width direction of the lid 100 is Y.

[0106] In some embodiments, the multi-point injection and venting design simplifies the foaming process, reduces operation steps and time, improves production efficiency, and is suitable for large-scale production applications. By ensuring uniform distribution of the foaming adhesive and effective air venting, a complete sealing layer is formed, enhancing the sealing performance of the battery box and preventing external contaminants from entering.

[0107] In some alternative implementations, the laminate is an extruded sheet.

[0108] It should be noted that by optimizing the design of extrusion molding, the structural strength and rigidity of sheet-like parts can be improved, and their impact resistance and deformation resistance can be enhanced.

[0109] It is understood that extrusion molding is a continuous manufacturing process suitable for mass production. This process can quickly produce uniform and consistent plate-shaped parts, improving production efficiency and reducing manufacturing costs. The extrusion molding process can produce plate-shaped parts with consistent thickness and surface quality, ensuring the dimensional accuracy and performance consistency of each component.

[0110] In addition, extrusion molding is suitable for a variety of materials, including metals, plastics, and composites. This diversity allows the selection of appropriate materials based on specific application requirements to optimize the performance of the laminate part, such as strength, weight, and corrosion resistance.

[0111] The box cover provided by the embodiments of the present application includes a laminate assembly, the laminate assembly includes at least two layers of laminate parts, the at least two layers of laminate parts are arranged in a thickness direction of the battery box, and the laminate assembly has a cavity; and a buffer is located in the cavity.

[0112] Through the at least two layers of laminate parts, the overall stiffness of the box cover is significantly improved, which can effectively disperse and withstand pressure and load from the outside, ensuring that it can carry passengers or heavy objects in the vehicle without causing pressure or contact to the internal battery and electrical modules; in addition, through the buffer, the box cover has good buffering and energy absorption characteristics. In a dynamic impact scenario, the buffer can effectively absorb and disperse impact energy, reducing the force transmitted to the battery and electrical components, thereby reducing the risk of structural deformation.

[0113] In addition, the embodiments of the present application also provide a battery box comprising the above-mentioned box cover 100.

[0114] It should be noted that the specific structure of the box cover 100 is not limited here, and can be referred to the above.

[0115] In some embodiments, the battery box further comprises a lower box body, a liquid cooling member, and a battery cell, wherein the box cover 100 is arranged on the lower box body, and a containing cavity is formed between the box cover 100 and the lower box body for containing the liquid cooling member and the battery cell, and the liquid cooling member exchanges heat with the battery cell.

[0116] In the description of the present application, 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" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0117] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cover (100) for a battery case, characterized in that, The lid (100) includes: The shelf assembly (110) includes at least two shelf members, the at least two shelf members being spaced apart along the thickness direction of the battery box, and the shelf assembly (110) has a cavity; A buffer (120) is located inside the cavity.

2. The box lid (100) according to claim 1, characterized in that, The shelf assembly (110) further includes a support member (113) disposed in the cavity and extending along the thickness direction of the battery box, the support member (113) being used to support the shelf assembly.

3. The box lid (100) according to claim 2, characterized in that, There are multiple support members (113), which are spaced apart and divide the cavity into multiple chambers.

4. The box lid (100) according to any one of claims 1-3, characterized in that, The at least two layers of the panel include a first layer (111) and a second layer (112), with the first layer (111) located above the second layer (112) along the thickness direction of the battery box.

5. The box lid (100) according to claim 4, characterized in that, The layer assembly (110) further includes a sealing member (114), which is connected between the first layer member (111) and the second layer member (112) and is located around the first layer member (111) and the second layer member (112); The sealing element (114) and at least two layers of the layered plate form the cavity.

6. The box lid (100) according to claim 5, characterized in that, The buffer (120) is foam and is configured to be filled into the cavity.

7. The box lid (100) according to claim 6, characterized in that, The first layer plate (111) has an injection hole (1111) and an vent hole (1112). The injection hole (1111) is located in the middle of the first layer plate (111), and the vent hole (1112) is located at the edge of the first layer plate (111).

8. The lid (100) according to claim 7, characterized in that, There are multiple glue injection holes (1111) and multiple vent holes (1112). The multiple glue injection holes (1111) are spaced apart along the length direction of the box cover (100), and the multiple vent holes (1112) are spaced apart along the length direction of the box cover (100). Along the width direction of the cover (100), two of the plurality of vent holes (1112) are located on opposite sides of one of the glue injection holes (1111).

9. The box lid (100) according to any one of claims 1-3, characterized in that, The layer is an extruded plate.

10. A battery box, characterized in that, Includes the box cover (100) as described in any one of claims 1 to 9.

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