Box cover structure, battery pack and vehicle

Abstract

The utility model provides a box cover structure, a battery pack and a vehicle. The box cover structure is used for sealing a box body of the battery; a plurality of battery packs which are sequentially arranged along a first direction are arranged in the box body; the box cover structure comprises a box cover body and at least one supporting assembly, and at least part of the box cover body forms a floor of a vehicle; the supporting assembly comprises a supporting plate and a protruding part, and the supporting plate is connected with the box cover body and located on the side, facing the ground, of the box cover body. The protruding part is arranged on the side, away from the box cover body, of the supporting plate and extends in the direction away from the box cover body. The protruding part is configured to be inserted between adjacent battery packs. The box cover structure can be prevented from being deformed, and the safety performance of the battery pack is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of energy storage, in particular to a box cover structure, a battery pack and a vehicle. BACKGROUND

[0002] With the increasing integration of electric vehicles, some research institutions have made beneficial exploration in the structure of battery packs, and new high-reliability box body structures are also developing. Each host factory is constantly launching a scheme of directly integrating the battery pack to the vehicle body structure to increase the space and comfort of the passenger compartment in the vehicle.

[0003] However, the load-bearing capacity of the above-mentioned battery pack is limited, and it is easy to be deformed by stepping, which reduces the safety of the battery pack. CONTENT OF THE UTILITY MODEL

[0004] The embodiments of the present application provide a box cover structure, a battery pack and a vehicle, which can improve the load-bearing capacity of the box cover structure and improve the safety of the battery pack.

[0005] In a first aspect, the embodiments of the present application provide a box cover structure, which is used to cover a box body of a battery; wherein the box body is provided with a plurality of battery groups arranged in sequence along a first direction; the box cover structure comprises:

[0006] a box cover body, at least part of the box cover body constitutes a floor of a vehicle;

[0007] at least one support assembly, the support assembly comprises a support plate and a protruding part, the support plate is connected with the box cover body and located on a side of the box cover body facing the ground; the protruding part is arranged on a side of the support plate away from the box cover body and extends in a direction away from the box cover body; wherein the protruding part is configured to be inserted between adjacent battery groups.

[0008] In a possible implementation, the support assembly comprises a plurality of support assemblies; the protruding part of each support assembly is configured to be inserted between corresponding adjacent battery groups, and the support plate of the support assembly is located between the pole columns of adjacent battery groups.

[0009] In a possible implementation, at least one of the support plate and the protruding part is provided with a stress buffer hole.

[0010] In a possible implementation, the box cover structure further comprises a connecting piece, one side of the connecting piece is welded to the box cover body, and the other side of the connecting piece is adhesively connected to the support plate.

[0011] In a possible implementation, a buffer piece is arranged between the support plate and the connecting piece.

[0012] In a possible implementation, the connecting piece further comprises two guide portions;

[0013] In the first direction, the two guide portions are respectively arranged on two sides of the connecting piece and enclose the connecting piece to form a guide groove; the guide groove is used for guiding the support plate.

[0014] In a possible implementation, a side of the support plate, which is away from the protruding portion, is provided with a receiving groove.

[0015] The support plate is connected to the cover body through a first adhesive layer, and part of the first adhesive layer is arranged in the receiving groove.

[0016] In a possible implementation, in the first direction, two sides of the protruding portion are respectively connected to the corresponding battery packs through a second adhesive layer.

[0017] In a second aspect, an embodiment of the present application provides a battery pack, comprising: a box body, a plurality of battery packs, and the cover structure of the first aspect.

[0018] The box body has a receiving cavity and an opening in communication with the receiving cavity.

[0019] The plurality of battery packs are arranged in the receiving cavity in a first direction.

[0020] The cover structure is arranged on the box body and covers the opening; wherein the protruding portion of the cover structure is inserted between two adjacent battery packs.

[0021] In a third aspect, an embodiment of the present application provides a vehicle, comprising the battery pack of the second aspect.

[0022] At least part of the cover body of the battery pack constitutes a floor of the vehicle.

[0023] The cover structure, the battery pack and the vehicle provided by the embodiments of the present application have the following advantages: at least one support assembly is arranged on a side of the cover body facing the ground, a support plate of the support assembly is connected to the cover body, and a protruding portion of the support assembly is inserted between adjacent battery packs. In this way, when the cover body is stepped on, the support assembly can withstand greater external pressure, and deformation of the battery pack caused by stepping or other external forces is avoided, thereby improving the safety and reliability of the battery pack.

[0024] In addition, the protruding portion of the support assembly has a supporting function and can also serve as a partitioning member, which can effectively separate adjacent battery packs and avoid direct contact between the battery packs due to vibration, extrusion or temperature change, thereby reducing mutual interference between the battery packs and improving the overall stability and safety of the battery pack.

[0025] In addition to the technical problems solved by the embodiments of the present application, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features described above, other technical problems solved by the box cover structure, the battery pack and the vehicle provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application together with the specification.

[0027] Figure 1 Partial exploded schematic view of the battery pack provided by the embodiments of the present application;

[0028] Figure 2 Partial cross-sectional view of the battery pack provided by the embodiments of the present application

[0029] Figure 3 Schematic view of the support assembly provided by the embodiments of the present application Figure 1

[0030] Figure 4 Schematic view of the support assembly provided by the embodiments of the present application Figure 2

[0031] Figure 5 Figure 4

[0032] Figure 6 Schematic view of the connecting piece provided by the embodiments of the present application.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 1000: battery pack;

[0035] 100: box cover structure;

[0036] 110: box cover body;

[0037] 120: support assembly; 121: support plate; 122: protruding part; 124: stress buffering hole;

[0038] 130: connecting piece; 131: guide part; 132: guide groove;

[0039] 300: battery pack; 310: battery cell.

[0040] ​​​​The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0042] As described in the background section, the battery packs in the related technologies have limited load-bearing capacity and are easily deformed by being stepped on. The inventors have found that the reason for this problem is that the top surface of the battery pack constitutes at least part of the vehicle floor, and the top surface of the battery pack has poor load-bearing capacity, so it is easily deformed by being stepped on.

[0043] To address the aforementioned technical problems, this application provides a battery pack cover structure, a battery pack, and a vehicle. By providing at least one support component on the ground-facing side of the battery pack cover, with its support plate connected to the cover cover body and its protrusion inserted between adjacent battery packs, the support component can withstand greater external pressure when the cover cover is stepped on, preventing battery pack deformation caused by stepping or other external forces, thereby improving the safety and reliability of the battery pack.

[0044] In addition, the protruding part of the support component not only has a supporting function, but also acts as an isolator, which can effectively separate adjacent battery packs and prevent direct contact between battery packs due to vibration, compression or temperature changes, thereby reducing mutual interference between battery packs and improving the overall stability and safety of the battery pack.

[0045] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0046] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0047] Please refer to Figures 1 to 4 This application provides a battery pack 1000, which serves as an energy storage component and can be applied to electrical devices. For example, the battery pack 1000 can be used in a vehicle to provide electrical power to ensure the normal operation of the vehicle.

[0048] The battery pack 1000 includes a cover structure 100 and a housing 200. The housing 200 has a receiving chamber for accommodating the battery pack 300. The housing 200 also has an opening communicating with the receiving chamber.

[0049] Multiple battery packs 300 are housed within the housing 200. The battery packs 300 are arranged sequentially along a first direction. Each battery pack 300 includes multiple battery cells 310 arranged sequentially along a second direction. Taking a rectangular battery cell 310 as an example, the first direction is the length direction of the battery cell 310, and the second direction is the width direction of the battery cell 310. The first direction may include... Figure 1 The central X direction; the second direction can be the auxiliary direction. Figure 1 Center Y direction.

[0050] Please refer to Figure 1 and Figure 2 The cover structure 100 seals the opening of the receiving chamber, so that the battery pack 1000 forms a sealed structure, thereby improving the safety performance of the battery pack 1000.

[0051] In some embodiments, the lid structure 100 includes a lid body 110, which covers the opening of the receiving chamber and is sealed to the box body 200. It is understood that the sealed connection between the lid body 110 and the box body 200 can employ relevant sealing measures, which will not be elaborated further in this embodiment.

[0052] At least a portion of the cover body 110 constitutes the vehicle floor. That is, a portion of the cover body 110 constitutes the vehicle floor, or the entire cover body 110 constitutes the vehicle floor. This simplifies the vehicle structure and reduces the vehicle's manufacturing cost.

[0053] However, if there are no supporting components between the cover body 110 and the battery pack 300, when the cover body 110 is stepped on, the force can be directly transmitted to the battery pack, which may deform or damage the battery pack, reducing the safety performance of the battery pack 1000.

[0054] Please refer to Figure 2 and Figure 3 Based on this, the box cover structure 100 provided in this embodiment further includes at least one support component 120. The support component 120 includes a support plate 121 and a protrusion 122. The support plate 121 is connected to the box cover body 110 and is located on the side of the box cover body 110 facing the ground.

[0055] The protrusion 122 is provided on the side of the support plate 121 away from the box cover body 110 and extends in the direction away from the box cover body 110, so that the support plate 121 and the protrusion 122 form a convex structure.

[0056] The support plate 121 and the protrusion 122 can be separate structures or integral structures. For example, the support plate 121 and the protrusion 122 are integrally formed. For instance, the support plate 121 and the protrusion 122 are formed simultaneously using a stamping process. This integral design eliminates any gaps or weak points between the support plate 121 and the protrusion 122, resulting in a more robust overall structure that can better withstand external pressure or impact, thereby significantly improving the structural strength and stability of the battery pack 1000.

[0057] Furthermore, since the support plate 121 and the protrusion 122 are an integral structure, problems such as loose connections, detachment, or wear that may exist in separate structures are avoided, reducing the risk of failure and improving the reliability of the battery pack.

[0058] The protrusion 122 is configured to be inserted between adjacent battery packs 300. In this way, when the cover body 110 is stepped on, the support assembly 120 can withstand greater external pressure, preventing the battery packs 300 from deforming due to stepping or other external forces, thereby improving the safety and reliability of the battery pack 1000.

[0059] In addition, the protrusion 122 of the support component 120 can also act as an isolator, effectively separating adjacent battery packs 300 and preventing direct contact between battery packs 300 due to vibration, compression or temperature changes, thereby reducing mutual interference between battery packs 300 and improving the overall stability and safety of the battery pack.

[0060] It should be noted that, in order to improve the load-bearing capacity of the lid structure 100, this embodiment also provides a cover plate on the side of the lid body 110 away from the support assembly 120. The cover plate can be welded to the lid body.

[0061] It should also be understood that the number of support components 120 can be one, with one support component 120 disposed between two adjacent battery packs 300. The number of support components 120 can also be multiple, for example, the number of battery packs 300 differs from the number of support components 120 by one. The protrusion 122 of each support component 120 is inserted between corresponding adjacent battery packs 300, and the support plate 121 of the support component 120 is located between the terminals of adjacent battery packs 300.

[0062] This not only enhances the structural strength of the cover structure 100 but also makes full use of the area between adjacent terminals, avoiding wasted space and improving the overall space utilization of the battery pack 1000. Furthermore, the support assembly 120 effectively isolates the terminals, preventing contact caused by battery expansion or vibration, thereby avoiding the risk of short circuits.

[0063] Furthermore, the protrusion 122, inserted between adjacent battery packs, effectively restricts the displacement of the battery pack 300, preventing it from shaking or shifting during vehicle operation, thereby improving the overall structural stability of the battery pack. It should be noted that the support plate 121 and the protrusion 122 can be solid or hollow structures.

[0064] For example, please refer to Figure 4 and Figure 5 At least one of the support plate 121 and the protrusion 122 is provided with a stress buffer hole 124. The stress buffer hole 124 can penetrate through the support plate 121 and / or the protrusion 122 along the second direction.

[0065] In this example, the stress buffer hole 124 can be provided on the support plate 121 or the protrusion 122, or it can be provided on both the support plate 121 and the protrusion 122. In this way, by providing the stress buffer hole 124 in the support plate 121 and / or the protrusion 122, the stress concentration of the support plate 121 and the protrusion 122 under stress can be effectively dispersed, avoiding structural deformation or damage caused by excessive local stress, thereby improving the strength and durability of the overall structure.

[0066] In addition, the stress buffer hole 124 can reduce the amount of material used in the support plate 121 and the protrusion 122, thereby reducing the weight of the entire cover structure 100, which is beneficial to reducing the overall weight of the battery system and improving energy density and transportation efficiency.

[0067] It should be noted that the number of stress-relief holes 124 can be one or more. For an example, please refer to [link / reference]. Figure 4 and Figure 5There are two stress buffer holes 124 on the support plate 121, and multiple stress buffer holes 124 on the protrusion 122. The multiple stress buffer holes 124 on the protrusion 122 are arranged at intervals along the height direction of the battery cell 310.

[0068] Two stress-relief holes 124 located within the support plate 121 are symmetrically arranged relative to the protrusion 122. In this way, the arrangement of multiple stress-relief holes 124 allows the support assembly 120 to form a honeycomb-like structure, which can effectively reduce fatigue damage to the support plate 121 and the protrusion 122 under long-term vibration or cyclic loads, extend the service life of the structure, and reduce maintenance costs.

[0069] The shape of the stress buffer hole 124 can be selected from various options. The stress buffer hole 124 can be a regular rectangle, a trapezoid, or a parallelogram. For example, the stress buffer hole 124 located on the protrusion 122 is rectangular. The stress buffer hole 124 located on the support plate 121 may include a first stress buffer hole 1241 and a second stress buffer hole 1242 that are interconnected. The first stress buffer hole 1241 is rectangular in shape, and the second stress buffer hole 1242 is triangular in shape. Thus, the shape of the stress buffer hole 124 can be reasonably set according to the shape of the support plate 121, thereby improving the flexibility of the support assembly 120.

[0070] It should be noted that there are multiple ways to connect the support component 120 to the box cover body 110.

[0071] In one possible implementation, please refer to Figure 2 and Figure 6 The box cover structure also includes a connector 130, one side of which is welded to the box cover body 110, and the other side of which is bonded to the support plate 121.

[0072] by Figure 6 Taking the orientation shown as an example, the top surface of the connector 130 is welded to the cover body 110, and the bottom surface of the connector 130 is bonded to the support plate 121. In this way, the connector 130 can be flexibly adjusted according to the specific structure of the battery pack and the usage environment. For example, different materials, sizes, or types of connectors 130 can be selected to meet different mechanical strength, corrosion resistance, or weight requirements.

[0073] Furthermore, the support assembly 120 also includes a buffer (not shown in the figure), which is disposed between the support plate 121 and the connector 130. The buffer may include, but is not limited to, cushioning foam.

[0074] Among them, the buffer can reduce or even absorb the force generated when the cover body 110 is stepped on, which helps to reduce the wear and fatigue of the cover body 110 and its connected parts, thereby helping to extend the service life of the entire cover structure 100 and reduce the frequency of maintenance and replacement.

[0075] The introduction of cushioning makes the touch of stepping on the box cover body 110 softer, reducing noise and vibration. This not only improves the overall quality of the product, but also provides users with a more comfortable user experience.

[0076] In this embodiment, the buffer can be fixedly connected to the connector 130 and the support plate 121 respectively by structural adhesive, so as to simplify the assembly process of the box cover structure 100.

[0077] It should be noted that the buffer can be disposed in other locations besides between the support plate 121 and the connector 130. For example, along the thickness direction of the support plate 121, the support plate 121 also includes a first surface and a second surface disposed opposite to each other, wherein the protrusion 122 is disposed on the second surface.

[0078] A cushioning element is provided on both the first and second surfaces. The cushioning element is adhered to the first and second surfaces of the support plate 121 by means of adhesive backing.

[0079] When the cover structure 100 is installed inside the housing 200, buffer elements are provided on the first and second surfaces of the support plate 121 between the battery pack 300 and the support plate 121. In this way, by fully utilizing the buffering performance of the buffer elements 123, not only is direct contact between the battery pack 300 and the support plate 121 reduced, but friction and stress concentration between the support plate 121 and the cover body 110 are also reduced, thus enhancing the stability of the entire cover structure 100.

[0080] It should be noted that the connector 130 can be a connecting plate that is parallel to the box cover body 110, or other options are also possible.

[0081] For example, the connector 130 further includes two guide portions 131. In a first direction, the two guide portions 131 are respectively disposed on both sides of the connector 130 and surround the connector 130 to form a guide groove 132. The connector 130 has a U-shaped structure.

[0082] The connector 130 covers the top surface of the support plate 121, and the guide portion 131 covers the side surface of the support plate 121. Thus, the two guide portions 131 of the connector 130 guide the support plate 121. For example, during installation, the connector 130 can be welded to the cover body 110, and then the support plate 121 of the support assembly 120 can be inserted into the U-shaped groove of the connector 130. The two sides of the two guide portions 131 of the connector 130 guide the support plate 121, facilitating the installation of the support plate 121 of the support assembly 120.

[0083] The two guide parts 131 and the connector 130 can be integrated into one piece. For example, the connector 130 can be manufactured by stamping, which can improve the structural strength of the connector 130.

[0084] In another possible implementation, the support plate 121 has a receiving groove (not shown) on the side opposite to the protrusion 122. The shape of the receiving groove can be varied. In one example, it can be a long strip structure. For example, a strip structure in which the receiving groove extends along a second direction. In another example, there are multiple receiving grooves, and the receiving grooves can also be rectangular structures, with the multiple receiving grooves spaced apart along the second direction. In yet another example, the shape of the receiving groove can be an inverted trapezoidal structure.

[0085] The support plate 121 is connected to the box cover body 110 through a first adhesive layer (not shown in the figure), wherein a portion of the first adhesive layer is disposed in the receiving groove.

[0086] When assembling the support plate 121 and the cover body 110, a certain thickness of structural adhesive can be applied to the support plate 121. The structural adhesive can be located within a receiving groove. Then, the cover body 110 is pressed onto the support plate 121. Since a force is applied to the cover body 110, there is a possibility that the structural adhesive may overflow. This embodiment, through the setting of the receiving groove, ensures that at least the receiving groove contains structural adhesive, thereby guaranteeing the connection strength between the cover body 110 and the support plate 121 and enhancing the overall structural stability of the battery pack.

[0087] The depth of the receiving groove can be freely set according to the thickness of the support plate 121.

[0088] In one possible implementation, along the first direction, both sides of the protrusion 122 are connected to the corresponding battery pack 300 via a second adhesive layer (not shown in the figure). Exemplarily, in any two battery packs 300, one battery pack 300 is bonded to one side of the protrusion 122 via the second adhesive layer, and the other battery pack 300 is bonded to the other side of the protrusion 122 via the second adhesive layer, so that any two battery packs 300 and a support assembly 120 form a whole, significantly improving the overall stability and vibration resistance of the battery pack 300. Furthermore, the second adhesive layer has a certain degree of elasticity, capable of adapting to the volume changes of the battery pack 300 during charging and discharging, reducing stress concentration caused by expansion, and preventing damage to the battery pack 300.

[0089] During the installation process, multiple support components 120 and multiple battery packs 300 are assembled. For example, the multiple battery packs 300 are first arranged in the housing 200 according to a preset rule. Then, structural adhesive is applied to the left and right surfaces of the protrusion 122 to form a second adhesive layer.

[0090] Then, the battery pack 300, support assembly 120, and battery pack 300 are arranged in that order, and then the three are pressed together to ensure that the surface of the protrusion 122 is bonded to the side of the adjacent battery pack.

[0091] Next, the electrode is welded to the corresponding battery cell's terminal post.

[0092] Then, the support plate 121 and the lid body 110 are fixedly connected, for example, by means of a connector 130. Alternatively, the support plate 121 and the lid body 110 can be fixedly connected by a first adhesive layer.

[0093] Finally, the cover structure 100 is fixed to the box body 200 to form a complete battery pack 1000.

[0094] This application also provides a vehicle including a battery pack 1000 as described in any of the above embodiments; at least a portion of the cover body 110 of the battery pack 1000 constitutes the floor of the vehicle.

[0095] Since the vehicle includes the battery pack 1000 described in any of the above embodiments, it has the structure and beneficial effects of the battery pack 1000, and will not be described in detail here.

[0096] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0097] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A box lid structure, characterized in that, The cover structure is used to seal the battery casing; wherein, the casing contains multiple battery packs arranged sequentially along a first direction; the cover structure includes: A lid body, at least a portion of which constitutes the floor of the vehicle; At least one support assembly, the support assembly including a support plate and a protrusion, the support plate being connected to the cover body and located on the side of the cover body facing the ground; the protrusion being disposed on the side of the support plate opposite to the cover body and extending in the direction opposite to the cover body; wherein the protrusion is configured to be inserted between adjacent battery packs.

2. The box cover structure according to claim 1, characterized in that, The support assembly includes multiple components; the protrusion of each support assembly is configured to be inserted between corresponding adjacent battery packs, and the support plate of the support assembly is located between the terminals of adjacent battery packs.

3. The box cover structure according to claim 1, characterized in that, At least one of the support plate and the protrusion is provided with a stress buffer hole.

4. The box cover structure according to any one of claims 1-3, characterized in that, The box cover structure also includes a connector, one side of which is welded to the box cover body, and the other side of which is bonded to the support plate.

5. The box cover structure according to claim 4, characterized in that, A buffer is provided between the support plate and the connector.

6. The box cover structure according to claim 5, characterized in that, The connector also includes two guide sections; In the first direction, the two guide portions are respectively disposed on both sides of the connector and surround the connector to form a guide groove; the guide groove is used to guide the support plate.

7. The box cover structure according to any one of claims 1-3, characterized in that, The support plate has a receiving groove on the side opposite to the protrusion. The support plate is connected to the box cover body through a first adhesive layer, wherein a portion of the first adhesive layer is disposed within the receiving groove.

8. The box cover structure according to any one of claims 1-3, characterized in that, Along the first direction, the two sides of the protrusion are respectively connected to the corresponding battery pack through the second adhesive layer.

9. A battery pack, characterized in that, The device includes a housing, multiple battery packs, and a cover structure as described in any one of claims 1-8; the housing has a receiving chamber and an opening communicating with the receiving chamber. Multiple battery packs are arranged in the receiving cavity along a first direction; The cover structure is disposed on the box body and covers the opening; wherein, the protrusion of the cover structure is inserted between two adjacent battery packs.

10. A vehicle, characterized in that, Includes the battery pack as described in claim 9; At least a portion of the battery pack's cover body forms the vehicle's floor.

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