Battery device and vehicle

Abstract

The embodiment of the utility model provides a battery device and a vehicle. The battery device comprises a battery monomer and a box body. The box body is provided with a containing cavity, the battery monomers are contained in the containing cavity, the box body comprises two first walls which are oppositely arranged in the first direction, the battery monomers are arranged between the two first walls, and the first direction is perpendicular to the gravity direction; wherein each first wall comprises a first wall body and a cantilever beam which are arranged in an included angle mode, the first wall bodies are used for defining a containing cavity, the cantilever beams are located on the outer sides of the first wall bodies and protrude out of the outer surfaces of the first wall bodies in the direction away from the containing cavity, and the cantilever beams are used for being connected with a vehicle frame. According to the technical scheme, the space utilization rate of the frame can be increased.

Description

Technical Field

[0001] The present application relates to the technical field of battery devices, and in particular to a battery device and a vehicle. Background Art

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0003] When the battery device is assembled on the vehicle, the battery device occupies a large space, which makes the space utilization rate of the vehicle frame low. Therefore, how to improve the space utilization rate of the vehicle frame is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The present application provides a battery device and a vehicle, which can improve the space utilization rate of the vehicle frame.

[0005] This application is achieved through the following technical solutions:

[0006] In a first aspect, embodiments of the present application provide a battery device comprising a battery cell and a housing. The housing has a receiving cavity, in which the battery cell is received. The housing includes two first walls disposed opposite each other along a first direction perpendicular to the direction of gravity, with the battery cell disposed between the two first walls. Each first wall includes a first wall body and a cantilever beam disposed at an angle to each other. The first wall body is configured to enclose the receiving cavity. The cantilever beam is located outside the first wall body and protrudes from the outer surface of the first wall body in a direction away from the receiving cavity. The cantilever beam is configured to connect to the vehicle frame.

[0007] According to the battery device of the embodiment of the present application, the cantilever beam is arranged at an angle to the first wall, and the cantilever beam protrudes from the outer surface of the first wall in the direction away from the accommodating cavity. The cantilever beam is used to connect to the frame. When the battery device and the frame are assembled, the cantilever beam is connected to the frame through an adapter bracket, which can raise the height of the battery device and change the connection mode of the battery device and the frame to a bottom hanging connection, thereby reducing the space occupied by the battery device under the frame; at the same time, the battery device and the adapter bracket have partial space overlap in the height direction, which can also reduce the space occupied by the battery device in the first direction, so that the space occupied by the battery device is smaller, thereby improving the space utilization rate of the frame.

[0008] According to some embodiments of the present application, the first wall and the cantilever beam are integrally formed.

[0009] In the above solution, the first wall body and the cantilever beam are integrally formed, and the cantilever beam and the first wall body are firmly connected, which facilitates improving the connection reliability between the cantilever beam and the vehicle frame.

[0010] According to some embodiments of the present application, the box body includes a first box body and a second box body arranged opposite to each other along a second direction, the first box body and the second box body are buckled together to form a accommodating cavity, the second box body is located above the first box body, the first box body includes a bottom wall and a side wall, the side wall is arranged around the bottom wall, the side wall includes two first walls arranged opposite to each other along the first direction, and the second direction is parallel to the direction of gravity.

[0011] In the above scheme, the first box body and the second box body are arranged opposite to each other along the second direction, the second box body is located above the first box body, and the cantilever beam is located on the side wall of the first box body, which can raise the connection height between the battery device and the frame, so as to reduce the space occupied by the battery device under the frame.

[0012] According to some embodiments of the present application, along the first direction, the maximum dimension of the cantilever beam is D, satisfying 40 mm ≤ D ≤ 80 mm.

[0013] In the above solution, the maximum size of the cantilever beam in the first direction satisfies the above relationship. When the cantilever beam and the adapter bracket have a large connection area, the cantilever beam occupies a small space in the first direction.

[0014] According to some embodiments of the present application, along the second direction, the maximum dimension of the cantilever beam is H, satisfying 20 mm ≤ H ≤ 40 mm, and the second direction is parallel to the direction of gravity.

[0015] In the above solution, the maximum dimension of the cantilever beam in the second direction satisfies the above relationship. While meeting the connection strength requirements of the cantilever beam and the adapter bracket, the weight of the cantilever beam is relatively light.

[0016] According to some embodiments of the present application, the battery cell includes a first battery cell and a second battery cell. The first battery cell and the second battery cell are arranged in the accommodating cavity along a second direction, and the second direction is parallel to the direction of gravity.

[0017] In the above solution, the first battery cell and the second battery cell can be stacked in the second direction, so as to utilize the space inside the box in the second direction and improve the energy density of the battery device.

[0018] In a second aspect, an embodiment of the present application further provides a vehicle, comprising a vehicle frame, an adapter bracket, and a battery device provided according to any of the above embodiments, wherein the cantilever beam and the first wall form an installation space, at least a portion of the adapter bracket is disposed in the installation space, and the cantilever beam is connected to the vehicle frame through the adapter bracket.

[0019] In the above solution, at least a portion of the adapter bracket is arranged in the installation space, and the cantilever beam is connected to the frame through the adapter bracket, which can raise the height of the battery device to reduce the space occupied by the battery device under the frame and improve the space utilization of the frame.

[0020] According to some embodiments of the present application, the adapter bracket includes a main body and a flange portion, the flange portion is folded from the edge of the main body toward the direction close to the first wall, the flange portion is connected to the cantilever beam, and the main body is connected to the frame.

[0021] In the above solution, the main body and the flange are integrally formed, and the adapter bracket has a high overall strength; the flange is connected to the cantilever beam, and the main body is connected to the frame, which facilitates the connection between the cantilever beam and the frame and is easy to assemble.

[0022] According to some embodiments of the present application, the cantilever beam is provided with a first mounting hole, the flange portion is provided with a second mounting hole corresponding to the first mounting hole, the main body portion is provided with a third mounting hole, and the frame is provided with a fourth mounting hole corresponding to the third mounting hole. The battery device also includes a first locking member and a second locking member; the first locking member is passed through the second mounting hole and the first mounting hole to lock the flange portion to the cantilever beam; the second locking member is passed through the third mounting hole and the fourth mounting hole to lock the main body portion to the frame.

[0023] In the above solution, the flange portion is locked to the cantilever beam by the first locking member, which facilitates the assembly and disassembly of the adapter bracket and the cantilever; the main body portion is locked to the frame by the second locking member, which facilitates the assembly and disassembly of the adapter and the frame.

[0024] According to some embodiments of the present application, the cantilever beam extends along a third direction, and the third direction, the first direction and the direction of gravity are perpendicular to each other. The cantilever beam is provided with multiple groups of first mounting holes arranged at intervals along the third direction. The number of adapter brackets is multiple, and each adapter bracket corresponds to a group of first mounting holes; each group of first mounting holes includes multiple first mounting holes arranged at intervals, and the flange portion is provided with multiple second mounting holes. The number of first locking members is multiple, and each first locking member is passed through a second mounting hole and a first mounting hole.

[0025] In the above embodiment, the cantilever beam extends along the third direction, so that the cantilever beam can be connected to the vehicle frame at different positions in the third direction, thereby ensuring a secure connection between the cantilever beam and the vehicle frame. The flange portion is connected to the cantilever beam via multiple locking members, thereby improving the reliability of the connection between the adapter bracket and the cantilever beam.

[0026] According to some embodiments of the present application, the number of first mounting holes in at least one group of first mounting holes is greater than the number of second mounting holes of the corresponding adapter bracket, so that the second mounting holes can correspond to first mounting holes at different positions.

[0027] In the above solution, the second mounting holes correspond to the first mounting holes at different positions, which facilitates adapting to assembly tolerances and improves assembly flexibility.

[0028] According to some embodiments of the present application, the main body is provided with a plurality of third mounting holes, and the plurality of third mounting holes are distributed in a matrix; the frame is provided with a plurality of fourth mounting holes, and the number of second locking members is multiple, and each second locking member is passed through a third mounting hole and a fourth mounting hole.

[0029] In the above solution, the plurality of third mounting holes are distributed in a matrix, so as to improve the connection reliability between the adapter bracket and the vehicle frame.

[0030] According to some embodiments of the present application, the wall thickness of the adapter bracket is T, which satisfies 4mm≤T≤8mm.

[0031] In the above solution, the wall thickness of the adapter bracket satisfies the above relationship, the adapter bracket has a high overall strength, which is convenient for improving the connection reliability between the adapter bracket, the cantilever beam and the frame, and the processing cost of the adapter bracket is low.

[0032] According to some embodiments of the present application, the adapter bracket further includes a reinforcing rib connecting the main body portion and the flange portion.

[0033] In the above solution, the provision of the reinforcing ribs can improve the connection reliability between the main body and the flange portion, thereby facilitating improvement of the overall strength of the adapter bracket.

[0034] According to some embodiments of the present application, the reinforcing rib is located in the installation space, and one end of the reinforcing rib connected to the main body forms a limited surface, and the frame contacts the limited surface.

[0035] In the above solution, the setting of the limiting surface can absorb the vibration during vehicle driving, reduce the force transmitted to the battery device by the frame torsion, and thus reduce the risk of damage to the battery device caused by the frame torsion.

[0036] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 A schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0039] Figure 2 A schematic diagram of the structural decomposition of a battery device provided in some embodiments of the present application;

[0040] Figure 3 A schematic structural diagram of a battery device provided in some embodiments of the present application;

[0041] Figure 4 A perspective view of a battery device provided in some embodiments of the present application;

[0042] Figure 5 A cross-sectional view of a battery device provided in some embodiments of the present application;

[0043] Figure 6 A schematic diagram of assembling an adapter bracket and a cantilever beam provided in some embodiments of the present application;

[0044] Figure 7 A schematic diagram of an adapter bracket connecting a cantilever beam and a vehicle frame provided in some embodiments of the present application;

[0045] Figure 8 A schematic diagram of the structure of an adapter bracket provided in some embodiments of the present application;

[0046] Figure 9 for Figure 7 A partial enlarged view of point A.

[0047] Icons: 100-battery device; 10-battery cell; 11-first battery cell; 12-second battery cell; 20-housing; 20a-first housing; 20b-second housing; 21-first wall; 211-first wall; 212-cantilever beam; 213-installation space; 214-first mounting hole; 215-threaded sleeve; 22-bottom wall; 23-side wall; 200-frame; 210-fourth mounting hole; 300-controller; 400-motor; 500-adapter bracket; 51-main body; 511-third mounting hole; 52-flanged portion; 521-second mounting hole; 53-reinforcement rib; 531-first reinforcement rib; 532-second reinforcement rib; 533-limiting surface; 1000-vehicle; X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0049] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0050] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0052] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0053] The term "multiple" in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0054] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, parallel, or hybrid via a busbar.

[0055] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. For example, the battery cell assembly may be a battery module, which is formed by arranging and securing multiple battery cells to form a single module. For example, a battery module may be formed by bundling multiple battery cells using cable ties.

[0056] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case.

[0057] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0058] As an example, the battery cell assembly may also be housed in the box by directly fixing the plurality of battery cells to the box.

[0059] As an example, the housing may include a first housing and a second housing. The first housing and the second housing interlock to form an enclosed space within the housing to house the battery cell assembly. Enclosed here means covered or closed, and can be either sealed or unsealed. The first housing may be a top cover or a bottom plate.

[0060] As an example, the box may include a top cover, a frame, and a bottom plate, wherein the top cover and the bottom plate are respectively connected to the frame to form a closed space inside the box to accommodate the battery cell assembly.

[0061] As an example, the box body can be used as a part of the chassis structure of the vehicle. For example, the top cover of the box body can become at least a part of the floor of the vehicle, or the frame of the box body can become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0062] In some embodiments, the battery device refers to an energy storage device, which includes a box with a door on at least one side. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0063] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0064] The battery cells may be, but are not limited to, lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, and the like.

[0065] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, and a polygonal battery. The polygonal battery is, for example, a hexagonal battery, etc. There is no special limitation in the embodiments of the present application.

[0066] At present, new energy vehicles include a vehicle body and a battery device. The vehicle body includes a frame. The functions of the frame may include supporting and connecting the various assemblies of the vehicle, so that the various assemblies maintain a relatively correct position, and withstand various loads inside and outside the vehicle. The battery device is generally set on the frame to provide electrical energy for the operation of various components and equipment in the vehicle. Generally, the side wall of the battery device box is connected to the frame through an adapter bracket. This fixing method is called side hanging. Since the side wall of the battery device box is connected to the adapter bracket, a large assembly space needs to be reserved on the side wall, so that the battery device occupies a large space under the frame. At the same time, there is no overlapping space between the battery device and the adapter bracket in the height direction, and the battery device also occupies a large space in the width direction, which makes the space utilization rate of the frame low.

[0067] In view of this, in order to improve the problem of low space utilization of the frame, an embodiment of the present application provides a battery device, which includes a battery cell and a box. The box has a storage cavity, and the battery cell is accommodated in the storage cavity. The box includes two first walls arranged opposite to each other along a first direction, and the battery cell is arranged between the two first walls. The first direction is perpendicular to the direction of gravity. Each first wall includes a first wall body and a cantilever beam arranged at an angle. The first wall body is used to enclose the storage cavity. The cantilever beam is located on the outside of the first wall body and protrudes from the outer surface of the first wall body in a direction away from the storage cavity. The cantilever beam is used to connect to the frame. After the battery device is assembled with the frame, it can reduce the space occupied by the battery device under the frame and improve the space utilization of the frame.

[0068] When the battery assembly is assembled with the vehicle frame, the cantilever beam can be connected to the frame via an adapter bracket. Because the cantilever beam protrudes from the outer surface of the first wall, away from the accommodating cavity, the height dimension of the adapter bracket's connection to the battery cell is relatively small. This increases the height of the battery assembly, changing the connection between the battery assembly and the frame to a bottom-hung connection and reducing the space occupied by the battery assembly below the frame. Furthermore, the partial height overlap between the battery assembly and the adapter bracket further reduces the space occupied by the battery assembly in the first direction, minimizing the battery assembly's space occupation and improving the space utilization of the frame.

[0069] The battery device disclosed in the embodiments of the present application can be used in, but is not limited to, passenger vehicles, commercial freight vehicles, and other types of vehicles. The vehicle disclosed in the embodiments of the present application can be used in, but is not limited to, passenger vehicles, commercial freight vehicles, and other types of vehicles.

[0070] Please refer to Figure 1 , Figure 1 Schematic diagram of the structure of a vehicle provided for some embodiments of the present application. Vehicle 1000 can be a new energy vehicle, which can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be provided at the bottom, head, or tail of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000. For example, the battery device 100 can serve as an operating power source for the vehicle 1000 and be used for the circuit system of the vehicle 1000, such as for the working power requirements during the startup, navigation, and operation of the vehicle 1000.

[0071] Vehicle 1000 may also include a frame 200, a controller 300, and a motor 400. The frame 200 supports and connects the various components of vehicle 1000, ensuring they maintain relative positioning and bearing various loads both inside and outside the vehicle 1000. The frame 200 may also be used to mount the battery assembly 100, for example, by mounting the battery assembly 100 on the frame 200. The controller 300 controls the battery assembly 100 to power the motor 400, for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000.

[0072] In some embodiments of the present application, the battery device 100 can serve not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0073] Please refer to Figure 2 and Figure 4 , Figure 2 This is a schematic diagram of the structural decomposition of the battery device provided in some embodiments of the present application. Figure 3 This is a schematic diagram of the structure of a battery device provided in some embodiments of the present application. Figure 4 A three-dimensional diagram of a battery device provided in some embodiments of the present application.

[0074] The present embodiment provides a battery device 100, which includes a battery cell 10 and a housing 20. The housing 20 has a receiving cavity, in which the battery cell 10 is received. The housing 20 includes two first walls 21 arranged opposite each other along a first direction X, with the battery cell 10 disposed between the two first walls 21. The first direction X is perpendicular to the direction of gravity. Each first wall 21 includes a first wall 211 and a cantilever beam 212 arranged at an angle. The first wall 211 is used to enclose the receiving cavity. The cantilever beam 212 is located outside the first wall 211 and protrudes from the outer surface of the first wall 211 in a direction away from the receiving cavity. The cantilever beam 212 is used to connect to the vehicle frame 200.

[0075] The box body 20 is used to provide a housing for the battery cell 10 .

[0076] There are multiple battery cells 10, which can be connected in series, in parallel, or in a hybrid connection. A hybrid connection means that the battery cells 10 are connected both in series and in parallel. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for achieving electrical connection between the multiple battery cells 10.

[0077] The two first walls 21 constitute the box body 20 . The two first walls 21 are spaced apart in the first direction X so that the battery cell 10 can be disposed between the two first walls 21 .

[0078] The first wall 211 and the cantilever beam 212 are arranged at an angle. The cantilever beam 212 is a beam arranged outside the accommodating cavity. The cantilever beam 212 protrudes from the outer surface of the first wall 211. The cantilever beam 212 can have a certain size in the first direction X to facilitate the connection of the cantilever beam 212 to the adapter bracket.

[0079] The cantilever beam 212 protrudes from the outer surface of the first wall 211. When the battery device 100 is assembled with the frame 200, the cantilever beam 212 is connected to the frame 200 through an adapter bracket. The connection position between the adapter bracket and the cantilever beam 212 occupies a smaller space in the height direction, which can raise the height of the battery device 100 and change the connection method between the battery device 100 and the frame 200 to a bottom hanging connection, thereby reducing the space occupied by the battery device 100 in the height direction; at the same time, the battery device 100 and the adapter bracket have partial space overlap in the height direction, which can also reduce the space occupied by the battery device 100 in the first direction X, so that the space occupied by the battery device 100 is smaller, thereby improving the space utilization rate of the frame 200.

[0080] In some embodiments, the cantilever beam 212 and the first wall 211 can be connected in various ways. For example, the cantilever beam 212 can be welded to the first wall 211 , or the cantilever beam 212 can be integrally formed with the first wall 211 .

[0081] In some embodiments, the cantilever beam 212 may be disposed perpendicular to the first wall 211 , and the cantilever beam 212 occupies a relatively small space in the first direction X.

[0082] According to some embodiments of the present application, the first wall 211 and the cantilever beam 212 are integrally formed.

[0083] The first wall 211 and the cantilever beam 212 may be integrally extruded.

[0084] In the above solution, the first wall 211 and the cantilever beam 212 are integrally formed, and the cantilever beam 212 and the first wall 211 are firmly connected, thereby improving the connection reliability between the cantilever beam 212 and the vehicle frame 200 .

[0085] According to some embodiments of the present application, the box body 20 includes a first box body 20a and a second box body 20b arranged opposite to each other along the second direction Y, the first box body 20a and the second box body 20b are buckled together to form a accommodating cavity, the second box body 20b is located above the first box body 20a, the first box body 20a includes a bottom wall 22 and a side wall 23, the side wall 23 is arranged around the bottom wall 22, and the side wall 23 includes two first walls 21 arranged opposite to each other along the first direction X, and the second direction Y is parallel to the direction of gravity.

[0086] The first box body 20a and the second box body 20b are distributed in the second direction Y. The first box body 20a may be a lower box body, and the second box body 20b may be a box cover.

[0087] The first box body 20a and the second box body 20b are buckled together to form a receiving cavity for receiving the battery cell 10. The first box body 20a and the second box body 20b are provided separately to facilitate the assembly of the battery cell 10 and the box body 20.

[0088] The side wall 23 is disposed around the bottom wall 22 . One end of the side wall 23 is connected to the bottom wall 22 . The other end of the side wall 23 forms an opening, and the second box body 20 b covers the opening.

[0089] The two first walls 21 are two walls that constitute the side wall 23. The cantilever beam 212 is set on the first box body 20a. When the battery device 100 is assembled with the frame 200, the adapter bracket is connected to the cantilever beam 212 set on the first box body 20a, which can raise the height of the battery device 100 so that a larger part of the battery device 100 in the height direction can be set in the assembly space formed by the frame 200.

[0090] In the above solution, the first box body 20a and the second box body 20b are arranged opposite to each other along the second direction Y, the second box body 20b is located above the first box body 20a, and the cantilever beam 212 is located on the side wall 23 of the first box body 20a, which can raise the connection height between the battery device 100 and the frame 200, so as to reduce the space occupied by the battery device 100 below the frame 200.

[0091] According to some embodiments of the present application, along the first direction X, the maximum dimension of the cantilever beam 212 is D, which satisfies 40 mm ≤ D ≤ 80 mm.

[0092] The width direction of the cantilever beam 212 may be parallel to the first direction X, and the dimension of the cantilever beam 212 in the first direction X may be the width of the cantilever beam 212 .

[0093] The maximum dimension of the cantilever beam 212 in the first direction X can determine the connection area between the cantilever beam 212 and the adapter bracket. The larger the maximum dimension of the cantilever beam 212 in the first direction X, the larger the connection area between the cantilever beam 212 and the adapter bracket can be, which facilitates the firm connection between the cantilever beam 212 and the adapter bracket.

[0094] Optionally, the maximum dimension D of the cantilever beam 212 in the first direction X can be any value among 40 mm, 45 mm, 50 mm, 55 mm, 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, or a range between any two values.

[0095] Optionally, a maximum dimension D of the cantilever beam 212 in the first direction X is greater than or equal to 50 mm and less than or equal to 70 mm.

[0096] In the above solution, the maximum size of the cantilever beam 212 in the first direction X satisfies the above relationship. When the cantilever beam 212 and the adapter bracket have a large connection area, the cantilever beam 212 occupies a small space in the first direction X.

[0097] According to some embodiments of the present application, along the second direction Y, the maximum dimension of the cantilever beam 212 is H, satisfying 20 mm ≤ H ≤ 40 mm, and the second direction Y is parallel to the direction of gravity.

[0098] The thickness direction of the cantilever beam 212 may be parallel to the second direction Y, and the dimension of the cantilever beam 212 in the second direction Y may be the thickness of the cantilever beam 212 .

[0099] Optionally, the maximum dimension H of the cantilever beam 212 in the second direction Y can be any point value among 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, 40mm or a range between any two point values.

[0100] Optionally, a maximum dimension H of the cantilever beam 212 in the second direction Y is greater than or equal to 24 mm and less than or equal to 36 mm.

[0101] In the above solution, the maximum dimension of the cantilever beam 212 in the second direction Y satisfies the above relationship. While meeting the connection strength requirements between the cantilever beam 212 and the adapter bracket, the cantilever beam 212 is light in weight.

[0102] In some embodiments, the cantilever beam 212 extends along the third direction Z, and the length direction of the cantilever beam 212 is parallel to the third direction Z. The cantilever beam 212 and the frame 200 may have multiple connection positions in the third direction Z to improve the connection reliability between the cantilever beam 212 and the frame 200.

[0103] Please refer to Figure 5 , Figure 5 A cross-sectional view of a battery device according to some embodiments of the present application. According to some embodiments of the present application, a battery cell 10 includes a first battery cell 11 and a second battery cell 12, which are arranged in the receiving cavity along a second direction Y, and the second direction Y is parallel to the direction of gravity.

[0104] In some embodiments, the first battery cell 11 is located below the second battery cell 12 .

[0105] In the accommodating cavity, the first battery cell 11 and the second battery cell 12 are distributed along the second direction Y. The first battery cell 11 and the second battery cell 12 can be stacked in the second direction Y to facilitate the use of the space inside the box body 20 in the second direction Y, thereby improving the energy density of the battery device 100.

[0106] Please refer to Figures 3 to 5 , and further reference Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the assembly of the adapter bracket and the cantilever beam provided in some embodiments of the present application. Figure 7 Schematic diagram of an adapter bracket connecting a cantilever beam and a vehicle frame according to some embodiments of the present application. According to some embodiments of the present application, a vehicle 1000 is provided, comprising a vehicle frame 200, an adapter bracket 500, and a battery device 100 according to any of the above embodiments. The cantilever beam 212 and the first wall 211 define an installation space 213, with at least a portion of the adapter bracket 500 disposed within the installation space 213. The cantilever beam 212 is connected to the vehicle frame 200 via the adapter bracket 500.

[0107] The installation space 213 is located on a side of the cantilever beam 212 facing away from the ground. The wall surface of the cantilever beam 212 facing away from the ground and the outer surface of the first wall 211 form the installation space 213 .

[0108] In some embodiments, the cantilever beam 212 is arranged perpendicular to the first wall 211, and the cantilever beam 212 has a first surface that encloses the installation space 213. The adapter bracket 500 is connected to the first surface, and the first surface is perpendicular to the direction of gravity, which facilitates the connection between the adapter bracket 500 and the cantilever beam 212, so that the connection between the adapter bracket 500 and the cantilever beam 212 is stable.

[0109] In the above solution, at least a portion of the adapter bracket 500 is disposed in the installation space 213, and the cantilever beam 212 is connected to the frame 200 through the adapter bracket 500, which can raise the height of the battery device 100, thereby reducing the space occupied by the battery device 100 below the frame 200 and improving the space utilization of the frame 200.

[0110] Please refer to Figure 6 and Figure 7 , and further reference Figure 8 and Figure 9 , Figure 8 This is a schematic diagram of the structure of the adapter bracket provided in some embodiments of the present application. Figure 9 for Figure 7 According to some embodiments of the present application, the adapter bracket 500 includes a main body 51 and a flange 52. The flange 52 is folded from the edge of the main body 51 toward the first wall 211. The flange 52 is connected to the cantilever beam 212, and the main body 51 is connected to the frame 200.

[0111] The adapter bracket 500 can be formed by bending a plate in one piece, and the flange portion 52 is bent relative to the main body portion 51 to facilitate the connection between the adapter bracket 500 and the cantilever beam 212 and the vehicle frame 200 .

[0112] The flange portion 52 is formed at an edge of the main body portion 51 and is folded toward the first wall 21 . Along the first direction X, the main body portion 51 is located at an end of the flange portion 52 away from the first wall 211 .

[0113] In the above scheme, the main body 51 and the flange portion 52 are integrally formed, and the adapter bracket 500 has a high overall strength; the flange portion 52 is connected to the cantilever beam 212, and the main body 51 is connected to the frame 200, which facilitates the connection between the cantilever beam 212 and the frame 200 and is easy to assemble.

[0114] In some embodiments, the flange portion 52 may also be folded from the edge of the main body 51 in a direction away from the first wall 211 . In this case, along the first direction X, the main body 51 is located at one end of the flange portion 52 close to the first wall 211 .

[0115] In some embodiments, the flange portion 52 is arranged parallel to the cantilever beam 212. The flange portion 52 can be parallel to the first surface of the cantilever beam 212 that encloses the installation space 213. The surface of the flange portion 52 facing the cantilever can be fitted with the first surface to facilitate the connection between the flange portion 52 and the cantilever beam 212.

[0116] In some embodiments, the flange portion 52 may be disposed perpendicularly to the main body portion 51 to reduce space occupation.

[0117] Please refer to Figure 4 、 Figure 7 and Figure 8According to some embodiments of the present application, the cantilever beam 212 is provided with a first mounting hole 214, the flange portion 52 is provided with a second mounting hole 521 corresponding to the first mounting hole 214, the main body 51 is provided with a third mounting hole 511, and the frame 200 is provided with a fourth mounting hole 210 corresponding to the third mounting hole 511. The battery device 100 also includes a first locking member and a second locking member; the first locking member is passed through the second mounting hole 521 and the first mounting hole 214 to lock the flange portion 52 to the cantilever beam 212; the second locking member is passed through the third mounting hole 511 and the fourth mounting hole 210 to lock the main body 51 to the frame 200.

[0118] The first mounting hole 214 is a hole provided in the cantilever beam 212 . The first mounting hole 214 may be a threaded hole, or the first mounting hole 214 may be a through hole. A threaded sleeve 215 is provided in the first mounting hole 214 , and the first locking member is threadedly connected to the threaded sleeve 215 provided in the first mounting hole 214 .

[0119] The second mounting hole 521 may be a through hole for the first locking member to pass through.

[0120] The first locking member may be a bolt, so that the first locking member cooperates with the first mounting hole 214 and the second mounting hole 521 .

[0121] The third mounting hole 511 may be a through hole for the second locking member to pass through.

[0122] The fourth mounting hole 210 may be a threaded hole or a through hole.

[0123] The second locking member may be a bolt, so that the second locking member cooperates with the third mounting hole 511 and the fourth mounting hole 210 .

[0124] In the above solution, the flange portion 52 is locked to the cantilever beam 212 by the first locking member, which facilitates the assembly and disassembly of the adapter bracket 500 and the cantilever; the main body 51 is locked to the frame 200 by the second locking member, which facilitates the assembly and disassembly of the adapter and the frame 200.

[0125] Please refer to Figure 4 、 Figure 6 and Figure 8According to some embodiments of the present application, the cantilever beam 212 extends along the third direction Z, and the third direction Z, the first direction X, and the direction of gravity are perpendicular to each other. The cantilever beam 212 is provided with multiple groups of first mounting holes 214 arranged at intervals along the third direction Z. The number of adapter brackets 500 is multiple, and each adapter bracket 500 corresponds to a group of first mounting holes 214; each group of first mounting holes 214 includes multiple first mounting holes 214 arranged at intervals, and the flange portion 52 is provided with multiple second mounting holes 521. The number of first locking members is multiple, and each first locking member is passed through a second mounting hole 521 and a first mounting hole 214.

[0126] The length direction of the cantilever beam 212 may be parallel to the third direction Z.

[0127] The plurality of groups of first mounting holes 214 are arranged at intervals along the third direction Z, and can provide connection locations with the adapter bracket 500 at different positions along the third direction Z.

[0128] The plurality of adapter brackets 500 may be spaced apart along the third direction Z so that the plurality of adapter brackets 500 may be matched with the plurality of groups of first mounting holes 214 .

[0129] The plurality of first mounting holes 214 are arranged at intervals so that the flange portion 52 and the cantilever beam 212 can be connected at multiple locations.

[0130] In the above embodiment, the cantilever beam 212 extends along the third direction Z, so that the cantilever beam 212 can be connected to the vehicle frame 200 at different positions along the third direction Z, thereby ensuring a secure connection between the cantilever beam 212 and the vehicle frame 200. The flange portion 52 is connected to the cantilever beam 212 via a plurality of locking members, thereby improving the reliability of the connection between the adapter bracket 500 and the cantilever beam 212.

[0131] In some embodiments, when the adapter bracket 500 cooperates with a corresponding set of first mounting holes 214 , the number of first mounting holes 214 may be the same as the number of second mounting holes 521 , or the number of first mounting holes 214 may be greater than the number of second mounting holes 521 .

[0132] Please refer to Figure 4 and Figure 8 According to some embodiments of the present application, the number of first mounting holes 214 in at least one group of first mounting holes 214 is greater than the number of second mounting holes 521 of the corresponding adapter bracket 500, so that the second mounting holes 521 can correspond to the first mounting holes 214 at different positions.

[0133] In some embodiments, the plurality of first mounting holes 214 in each group of first mounting holes 214 are spaced apart along the third direction Z, so that the flange portion 52 is connected to the cantilever beam 212 at different positions along the third direction Z.

[0134] The number of first mounting holes 214 in at least one group of first mounting holes 214 is greater than the number of second mounting holes 521 of the corresponding adapter bracket 500. In this case, there are multiple connection positions between the flange portion 52 and the cantilever beam 212. According to assembly requirements, the second mounting holes 521 can cooperate with the first mounting holes 214 at different positions on the third party.

[0135] In the above solution, the second mounting holes 521 correspond to the first mounting holes 214 at different positions, which facilitates adapting to assembly tolerances and improves assembly flexibility.

[0136] Please refer to Figures 6 to 8 According to some embodiments of the present application, the main body 51 is provided with a plurality of third mounting holes 511, and the plurality of third mounting holes 511 are distributed in a matrix; the frame 200 is provided with a plurality of fourth mounting holes 210, and the number of second locking members is multiple, and each second locking member is passed through a third mounting hole 511 and a fourth mounting hole 210.

[0137] The plurality of third mounting holes 511 are distributed in a matrix, and can realize the connection between the adapter bracket 500 and the vehicle frame 200 at different positions, thereby increasing the connection area between the adapter bracket 500 and the vehicle frame 200.

[0138] In some embodiments, the plurality of third mounting holes 511 are distributed in a matrix in the second direction Y and the third direction Z.

[0139] Each third mounting hole 511 corresponds to a fourth mounting hole 210 . The number of fourth mounting holes 210 can be greater than the number of third mounting holes 511 . The adapter bracket 500 can be connected to the frame 200 at different positions of the frame 200 .

[0140] In the above solution, the plurality of third mounting holes 511 are distributed in a matrix, so as to improve the connection reliability between the adapter bracket 500 and the vehicle frame 200 .

[0141] According to some embodiments of the present application, the wall thickness of the adapter bracket 500 is T, which satisfies 4mm≤T≤8mm.

[0142] The adapter bracket 500 can be formed by bending a plate, and the wall thickness of the adapter bracket 500 is the thickness of the plate.

[0143] For example, the thickness of the flange portion 52 and the thickness of the main body portion 51 are both the same as the wall thickness of the adapter bracket 500 .

[0144] Optionally, the wall thickness T of the adapter bracket 500 can be any value among 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, or a range between any two values.

[0145] Optionally, the wall thickness T of the adapter bracket 500 is greater than or equal to 5 mm and less than or equal to 7 mm.

[0146] In the above solution, the wall thickness of the adapter bracket 500 satisfies the above relationship, and the adapter bracket 500 has a high overall strength, which is convenient for improving the connection reliability between the adapter bracket 500 and the cantilever beam 212 and the frame 200, and the processing cost of the adapter bracket 500 is low.

[0147] Please refer to Figure 8 According to some embodiments of the present application, the adapter bracket 500 further includes a reinforcing rib 53 , which connects the main body portion 51 and the flange portion 52 .

[0148] The reinforcing rib 53 can be integrally formed with the main body 51, the reinforcing rib 53 can be bent from the edge of the main body 51 toward the first wall 211, and the reinforcing rib 53 is welded to the flange portion 52; or, the reinforcing rib 53 is separately arranged from the main body 51, and the reinforcing rib 53 can be welded to the main body 51 and the flange portion 52 respectively.

[0149] In the above solution, the provision of the reinforcing ribs 53 can improve the connection reliability between the main body 51 and the flange portion 52 , thereby facilitating improvement of the overall strength of the adapter bracket 500 .

[0150] In some embodiments, a plurality of reinforcing ribs 53 are provided, and the plurality of reinforcing ribs 53 are arranged at intervals along the third direction Z.

[0151] Please refer to Figure 8 The multiple reinforcing ribs 53 may include at least one first reinforcing rib 531 and two second reinforcing ribs 532. The first reinforcing rib 531 is separately arranged from the main body 51. The first reinforcing rib 531 is welded to the main body 51 and the flange portion 52 respectively. The two second reinforcing ribs 532 are located at both ends of the main body 51 in the third direction Z. The two second reinforcing ribs 532 are respectively integrally formed with the main body 51. The second reinforcing rib 532 is bent from the edge of the main body 51 toward the first wall 211, and the second reinforcing rib 532 is welded to the flange portion 52.

[0152] Please refer to Figures 7 to 9 According to some embodiments of the present application, the reinforcing rib 53 is located in the installation space 213 , and one end of the reinforcing rib 53 connected to the main body 51 forms a limiting surface 533 , and the frame 200 contacts the limiting surface 533 .

[0153] For ease of distinction, the installation space 213 enclosed by the cantilever beam 212 and the first wall 211 is the first installation space 213. A second installation space is formed between the main body 51 and the flange portion 52. A portion of the vehicle frame 200 is located in the second installation space. The reinforcing rib 53 is located within the first installation space 213. The limiting surface 533 is located at the end of the reinforcing rib 53 facing away from the flange portion 52 to facilitate engagement between the limiting surface 533 and the vehicle frame 200.

[0154] The frame 200 contacts the limiting surface 533 . When the frame 200 is subjected to twisting force, the reinforcing rib 53 can abut against the frame 200 , absorbing the force transmitted by the frame 200 and reducing the risk of the twisting force of the frame 200 damaging the battery device 100 .

[0155] In the above solution, the setting of the limiting surface 533 can absorb the vibration of the vehicle 1000 during driving, reduce the force transmitted to the battery device 100 by the torsion of the frame 200, and further reduce the risk of damage to the battery device 100 caused by the torsion of the frame 200.

[0156] In some embodiments, a gap may exist between the vehicle frame 200 and the limiting surface 533 to accommodate assembly tolerances.

[0157] According to some embodiments of this application, please refer to Figures 3 to 9 , an embodiment of the present application provides a battery device 100, which is used to be connected to an adapter bracket 500. The battery device 100 includes a battery cell 10 and a box body 20. The box body 20 has a accommodating cavity, and the battery cell 10 is accommodated in the accommodating cavity. The box body 20 includes two first walls 21 arranged opposite to each other along a first direction X, and the battery cell 10 is arranged between the two first walls 21. The first direction X is perpendicular to the direction of gravity; wherein, each first wall 21 includes a first wall body 211 and a cantilever beam 212 arranged at an angle, the first wall body 211 is used to enclose the accommodating cavity, the cantilever beam 212 is located on the outside of the first wall body 211, and protrudes from the outer surface of the first wall body 211 in a direction away from the accommodating cavity, and the cantilever beam 212 is used to connect to the frame 200.

[0158] The first wall 211 is integrally formed with the cantilever beam 212. The cantilever beam 212 extends along the third direction Z and is provided with a plurality of groups of first mounting holes 214 spaced apart along the third direction Z. Each group of first mounting holes 214 includes a plurality of first mounting holes 214 spaced apart along the third direction Z.

[0159] When the battery device 100 is assembled with the vehicle frame 200, the battery device 100 and the vehicle frame 200 can be connected via a plurality of adapter brackets 500. At least a portion of the adapter bracket 500 is disposed within the mounting space 213 formed by the cantilever beam 212 and the first wall 211. The adapter bracket 500 may include a main body 51 and a flange 52. The flange 52 is folded from the edge of the main body 51 toward the first wall 211. The flange 52 is provided with a plurality of second mounting holes 521 corresponding to the first mounting holes 214. The flange 52 is connected to the cantilever beam 212 via a first locking member extending through the second mounting holes 521 and the first mounting holes 214. The main body 51 is provided with a plurality of third mounting holes 511. The vehicle frame 200 is provided with a plurality of fourth mounting holes 210 corresponding to the third mounting holes 511. The main body 51 is connected to the vehicle frame 200 via a second locking member extending through the third mounting holes 511 and the fourth mounting holes 210.

[0160] According to the battery device 100 provided in the embodiment of the present application, the cantilever beam 212 is connected to the frame 200 through the adapter bracket 500, and the connection mode of the battery device 100 and the frame 200 is changed to a bottom hanging connection. The connection position of the battery device 100 and the frame 200 is raised. On the same projection plane perpendicular to the first direction X, along the height direction, the orthographic projection of the battery device 100 and the orthographic projection of the frame 200 have a large overlapping size. The battery device 100 occupies less space below the frame 200, so that the space occupied by the battery device 100 is small, thereby improving the space utilization of the frame 200.

[0161] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A battery device, characterized in that: include: Battery cells; A box body having a receiving cavity, wherein the battery cell is received in the receiving cavity, the box body including two first walls oppositely arranged along a first direction, the battery cell being arranged between the two first walls, and the first direction being perpendicular to the direction of gravity; Among them, each first wall includes a first wall body and a cantilever beam set at an angle, the first wall body is used to enclose the accommodating cavity, the cantilever beam is located on the outside of the first wall body and protrudes from the outer surface of the first wall body in the direction away from the accommodating cavity, and the cantilever beam is used to connect to the frame.

2. The battery device according to claim 1, wherein: The first wall and the cantilever beam are integrally formed.

3. The battery device according to claim 1, wherein: The box body includes a first box body and a second box body arranged opposite to each other along a second direction, the first box body and the second box body are buckled together to form the accommodating cavity, the second box body is located above the first box body, the first box body includes a bottom wall and a side wall, the side wall is arranged around the bottom wall, and the side wall includes two first walls arranged opposite to each other along the first direction, and the second direction is parallel to the direction of gravity.

4. The battery device according to claim 1, wherein: Along the first direction, the maximum dimension of the cantilever beam is D, which satisfies 40 mm ≤ D ≤ 80 mm.

5. The battery device according to claim 1, wherein: Along the second direction, the maximum dimension of the cantilever beam is H, satisfying 20 mm ≤ H ≤ 40 mm, and the second direction is parallel to the direction of gravity.

6. The battery device according to claim 1, wherein: The battery cells include a first battery cell and a second battery cell. The first battery cell and the second battery cell are arranged in the accommodation cavity along a second direction. The second direction is parallel to the direction of gravity.

7. A vehicle, characterized in that: include: Frame; Adapter bracket; According to the battery device according to any one of claims 1 to 6, the cantilever beam and the first wall body enclose an installation space, at least a portion of the adapter bracket is disposed in the installation space, and the cantilever beam is connected to the vehicle frame through the adapter bracket.

8. The vehicle according to claim 7, characterized in that The adapter bracket includes a main body and a flange portion, wherein the flange portion is folded from the edge of the main body toward the first wall, the flange portion is connected to the cantilever beam, and the main body is connected to the vehicle frame.

9. The vehicle according to claim 8, characterized in that The cantilever beam is provided with a first mounting hole, the flange portion is provided with a second mounting hole corresponding to the first mounting hole, the main body portion is provided with a third mounting hole, the frame is provided with a fourth mounting hole corresponding to the third mounting hole, and the battery device further includes a first locking member and a second locking member; The first locking member is provided through the second mounting hole and the first mounting hole to lock the flange portion to the cantilever beam; The second locking member is passed through the third mounting hole and the fourth mounting hole to lock the main body to the vehicle frame.

10. The vehicle according to claim 9, characterized in that The cantilever beam extends along a third direction, wherein the third direction, the first direction, and the direction of gravity are perpendicular to each other. The cantilever beam is provided with a plurality of groups of first mounting holes spaced apart along the third direction. There are a plurality of adapter brackets, and each adapter bracket corresponds to a group of the first mounting holes. Each group of the first mounting holes includes a plurality of the first mounting holes arranged at intervals, the flange portion is provided with a plurality of second mounting holes, the number of the first locking members is multiple, and each first locking member is passed through one of the second mounting holes and one of the first mounting holes.

11. The vehicle according to claim 10, characterized in that The number of the first mounting holes in at least one group of the first mounting holes is greater than the number of the corresponding second mounting holes of the adapter bracket, so that the second mounting holes can correspond to the first mounting holes at different positions.

12. The vehicle according to claim 9, characterized in that The main body is provided with a plurality of third mounting holes, and the plurality of third mounting holes are distributed in a matrix; The frame is provided with a plurality of fourth mounting holes, and the number of the second locking members is plural, and each of the second locking members is passed through one of the third mounting holes and one of the fourth mounting holes.

13. The vehicle according to claim 8, characterized in that The wall thickness of the adapter bracket is T, which satisfies 4mm≤T≤8mm.

14. The vehicle according to claim 8, characterized in that The adapter bracket further includes a reinforcing rib, which connects the main body and the flange portion.

15. The vehicle according to claim 14, characterized in that The reinforcing rib is located in the installation space, and one end of the reinforcing rib connected to the main body forms a limiting surface, and the frame contacts the limiting surface.

Images