Battery apparatus and vehicle

Abstract

Embodiments of the present application provide a battery apparatus and a vehicle. The battery apparatus comprises battery cells and a case; the case is provided with an accommodating cavity, and the battery cells are accommodated in the accommodating cavity; the case comprises two first walls that are arranged opposite to each other in a first direction, the battery cells are arranged between the two first walls, and the first direction is perpendicular to the direction of gravity; each first wall comprises a first wall body and a cantilever beam that are arranged to form an included angle, the first wall body is used for defining the accommodating cavity, the cantilever beam is located on the outer side of the first wall body and protrudes from the outer surface of the first wall body in a direction away from the accommodating cavity, and the cantilever beam is used for being connected to a vehicle frame. On the basis of the technical solution provided by the present application, the space utilization rate of a vehicle frame can be improved.

Description

Battery devices and vehicles Cross-references to related applications

[0001] This application claims priority to Chinese patent application CN202421841915.0 entitled "Battery Device and Vehicle", filed on July 31, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery device technology, and more specifically, to a battery device and a vehicle. Background Technology

[0003] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0004] When assembling battery devices into a vehicle, the battery devices occupy a significant amount of space, resulting in low space utilization of the vehicle frame. Therefore, improving the space utilization of the vehicle frame is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides a battery device and a vehicle that can improve the space utilization of the vehicle frame.

[0006] This application is achieved through the following technical solution:

[0007] In a first aspect, embodiments of this application provide a battery device, which includes 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 to each other along a first direction, and the battery cell is disposed between the two first walls. The first direction is perpendicular to the direction of gravity. Each first wall includes a first wall body disposed at an included angle and a cantilever beam. The first wall body is used to enclose the receiving cavity, and 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 used to connect to a vehicle frame.

[0008] According to the battery device of this application embodiment, the cantilever beam is set 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 receiving cavity. The cantilever beam is used to connect to the vehicle frame. When the battery device is assembled with the vehicle frame, the cantilever beam is connected to the vehicle frame through an adapter bracket, which can raise the height of the battery device and change the connection method between the battery device and the vehicle frame to a bottom-mounted connection, reducing the space occupied by the battery device under the vehicle frame. At the same time, the battery device and the adapter bracket have partial spatial overlap in the height direction, which can also reduce the space occupied by the battery device in the first direction, making the space occupied by the battery device smaller and improving the space utilization rate of the vehicle frame.

[0009] According to some embodiments of this application, the first wall body is integrally formed with the cantilever beam.

[0010] In the above scheme, the first wall and the cantilever beam are integrally formed, and the cantilever beam and the first wall are firmly connected, which facilitates the improvement of the connection reliability between the cantilever beam and the vehicle frame.

[0011] According to some embodiments of this application, the box includes a first box and a second box arranged opposite to each other along a second direction. The first box and the second box are fastened together to form a receiving cavity. The second box is located above the first box. The first box includes a bottom wall and a side wall. The side wall surrounds the bottom wall. The side wall includes two first walls arranged opposite to each other along a first direction. The second direction is parallel to the direction of gravity.

[0012] In the above scheme, the first box and the second box are arranged opposite each other along the second direction, the second box is located above the first box, and the cantilever beam is located on the side wall of the first box, 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.

[0013] According to some embodiments of this application, along the first direction, the maximum dimension of the cantilever beam is D, which satisfies 40mm≤D≤80mm.

[0014] In the above scheme, the maximum dimension of the cantilever beam in the first direction satisfies the above relationship. Under the condition that the cantilever beam and the adapter have a large connection area, the space occupied by the cantilever beam in the first direction is small.

[0015] According to some embodiments of this application, along the second direction, the maximum dimension of the cantilever beam is H, which satisfies 20mm≤H≤40mm, and the second direction is parallel to the direction of gravity.

[0016] In the above scheme, the maximum dimension of the cantilever beam in the second direction satisfies the above relationship, and the weight of the cantilever beam is relatively light while meeting the connection strength requirements between the cantilever beam and the adapter bracket.

[0017] According to some embodiments of this application, a battery cell includes a first battery cell and a second battery cell, which are disposed in a receiving cavity along a second direction parallel to the direction of gravity.

[0018] In the above scheme, the first battery cell and the second battery cell can be stacked in the second direction to make use of the space inside the housing in the second direction, thereby improving the energy density of the battery device.

[0019] Secondly, this application also provides a vehicle including a frame, an adapter bracket, and a battery device according to any of the above embodiments. 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 frame through the adapter bracket.

[0020] In the above solution, at least a portion of the adapter bracket is located in the installation space, and the cantilever beam is connected to the vehicle frame through the adapter bracket, which can raise the height of the battery device, thereby reducing the space occupied by the battery device under the vehicle frame and improving the space utilization of the vehicle frame.

[0021] According to some embodiments of this application, the adapter bracket includes a main body and a flanged part. The flanged part is folded from the edge of the main body toward the direction close to the first wall. The flanged part is connected to the cantilever beam, and the main body is connected to the vehicle frame.

[0022] In the above scheme, the main body and the flange are integrally formed, and the adapter bracket has 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 makes assembly convenient.

[0023] According to some embodiments of this 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, 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 passes through the second mounting hole and the first mounting hole to lock the flange portion to the cantilever beam; the second locking member passes through the third mounting hole and the fourth mounting hole to lock the main body portion to the frame.

[0024] In the above solution, the flange 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 is locked to the frame by the second locking member, which facilitates the assembly and disassembly of the adapter and the frame.

[0025] According to some embodiments of this application, the cantilever beam extends along a third direction, and the third direction, the first direction, and the gravity direction are perpendicular to each other. The cantilever beam is provided with multiple sets of first mounting holes spaced apart along the third direction. There are multiple adapter brackets, and each adapter bracket corresponds to a set of first mounting holes. Each set of first mounting holes includes multiple first mounting holes spaced apart. The flange portion is provided with multiple second mounting holes. There are multiple first locking members, and each first locking member passes through one second mounting hole and one first mounting hole.

[0026] In the above design, the cantilever beam extends along a third direction to facilitate connection between the cantilever beam and the frame at different positions along this direction, ensuring a secure connection. The flanged portion is connected to the cantilever beam via multiple locking devices to improve the reliability of the connection between the adapter bracket and the cantilever beam.

[0027] According to some embodiments of this application, the number of first mounting holes in at least one set 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 the first mounting holes at different positions.

[0028] In the above scheme, the second mounting hole corresponds to the first mounting hole at different positions, which facilitates the adaptation to assembly tolerances and improves assembly flexibility.

[0029] According to some embodiments of this application, the main body is provided with a plurality of third mounting holes, which are arranged in a matrix; the frame is provided with a plurality of fourth mounting holes, and there are a plurality of second locking members, each of which passes through a third mounting hole and a fourth mounting hole.

[0030] In the above scheme, multiple third mounting holes are distributed in a matrix to improve the connection reliability between the adapter bracket and the vehicle frame.

[0031] According to some embodiments of this application, the wall thickness of the adapter bracket is T, which satisfies 4mm≤T≤8mm.

[0032] In the above scheme, the wall thickness of the adapter bracket satisfies the above relationship, the adapter bracket has high overall strength, which facilitates the improvement of the connection reliability between the adapter bracket and the cantilever beam and the frame, and the processing cost of the adapter bracket is low.

[0033] According to some embodiments of this application, the adapter bracket further includes a reinforcing rib that connects the main body and the flange.

[0034] In the above scheme, the addition of reinforcing ribs can improve the connection reliability between the main body and the flange, and facilitate the improvement of the overall strength of the adapter bracket.

[0035] According to some embodiments of this application, the reinforcing rib is located within the installation space, and one end of the reinforcing rib connected to the main body forms a limiting surface, with the frame in contact with the limiting surface.

[0036] In the above solution, the setting of the limiting surface can absorb the vibration during vehicle operation, reduce the force transmitted from the frame torsion to the battery device, and thus reduce the risk of battery device damage caused by frame torsion.

[0037] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 is a schematic diagram of the vehicle structure provided in some embodiments of this application;

[0040] Figure 2 is an exploded view of the structure of a battery device provided in some embodiments of this application;

[0041] Figure 3 is a schematic diagram of the structure of a battery device provided in some embodiments of this application;

[0042] Figure 4 is a perspective view of a battery device provided in some embodiments of this application;

[0043] Figure 5 is a cross-sectional view of a battery device provided in some embodiments of this application;

[0044] Figure 6 is a schematic diagram of the assembly of the adapter bracket and the cantilever beam provided in some embodiments of this application;

[0045] Figure 7 is a schematic diagram of the adapter bracket connecting the cantilever beam and the vehicle frame provided in some embodiments of this application;

[0046] Figure 8 is a schematic diagram of the structure of the adapter bracket provided in some embodiments of this application;

[0047] Figure 9 is a magnified view of part A in Figure 7.

[0048] The accompanying drawings are not drawn to scale.

[0049] Marking Explanation: 100-Battery Unit; 10-Battery Cell; 11-First Battery Cell; 12-Second Battery Cell; 20-Box; 20a-First Box; 20b-Second Box; 21-First Wall; 211-First Wall; 212-Cantilever Beam; 213-Mounting 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 Edge; 521-Second Mounting Hole; 53-Reinforcing Rib; 531-First Reinforcing Rib; 532-Second Reinforcing Rib; 533-Limiting Surface; 1000-Vehicle; X-First Direction; Y-Second Direction; Z-Third Direction. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0052] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0055] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0056] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0057] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells into a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0058] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0059] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0060] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0061] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0062] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0063] As an example, the housing can be part of the vehicle's chassis structure. For instance, the housing's roof can be at least part of the vehicle's floor, or the housing's frame can be at least part of the vehicle's crossbeams and longitudinal beams.

[0064] In some embodiments, the battery device refers to an energy storage device, which includes a housing with a door on at least one side. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0065] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0066] The battery cell may be, but is not limited to, lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc.

[0067] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. There are no particular limitations in the embodiments of this application.

[0068] Currently, new energy vehicles consist of the vehicle body and the battery pack. The vehicle body includes the frame, whose function includes supporting and connecting the various assemblies of the vehicle, maintaining their relatively correct positions, and bearing various loads from inside and outside the vehicle. The battery pack is generally mounted on the frame and provides electrical energy to the various components and equipment in the vehicle. Typically, the side wall of the battery pack housing is connected to the frame via an adapter bracket; this fixing method is called side mounting. Because the side wall of the battery pack housing is connected to the adapter bracket, a large assembly space needs to be reserved on the side wall, resulting in the battery pack occupying a large space under the frame. Furthermore, the battery pack and the adapter bracket do not overlap in the height direction, and the battery pack also occupies a large space in the width direction, leading to low space utilization of the frame.

[0069] In view of this, to improve the problem of low space utilization of the vehicle frame, this application provides a battery device, which includes 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 arranged opposite each other along a first direction, and the battery cell is disposed between the two first walls. The first direction is perpendicular to the direction of gravity. Each first wall includes a first wall body arranged at an included angle and a cantilever beam. The first wall body is used to enclose the receiving cavity, and 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 used to connect to the vehicle frame. After the battery device is assembled with the vehicle frame, it can reduce the space occupied by the battery device under the vehicle frame and improve the space utilization of the vehicle frame.

[0070] When the aforementioned battery assembly is assembled with the vehicle frame, the cantilever beam can be connected to the frame via an adapter bracket. Since the cantilever beam protrudes from the outer surface of the first wall in the direction away from the receiving cavity, the connection dimension between the adapter bracket and the battery cell in the height direction is smaller. This allows for an increase in the height of the battery assembly, changing the connection method between the battery assembly and the frame to a bottom-mounted connection, thus reducing the space occupied by the battery assembly under the frame. Simultaneously, the battery assembly and the adapter bracket partially overlap in the height direction, further reducing the space occupied by the battery assembly in the first direction, resulting in a smaller space footprint for the battery assembly and improving the space utilization rate of the vehicle frame.

[0071] The battery device disclosed in this application can be used, but is not limited to, passenger vehicles, commercial vehicles, and other types of vehicles. The vehicles disclosed in this application can be, but are not limited to, passenger vehicles, commercial vehicles, and other types of vehicles.

[0072] Please refer to Figure 1, which is a schematic diagram of the vehicle structure provided in some embodiments of this application. The vehicle 1000 can be a new energy vehicle, such as a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear 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 the operating power source for the vehicle 1000's electrical system, such as meeting the power requirements for starting, navigation, and operation of the vehicle 1000.

[0073] The vehicle 1000 may also include a frame 200, a controller 300, and a motor 400. The frame 200 supports and connects the various assemblies of the vehicle 1000, ensuring they are in the correct relative positions, and bears various loads inside and outside the vehicle 1000. The frame 200 can also be used to mount the battery pack 100; for example, the battery pack 100 is mounted on the frame 200. The controller 300 controls the power supply from the battery pack 100 to the motor 400, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0074] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0075] Please refer to Figures 2 to 4. Figure 2 is an exploded view of the structure of a battery device provided in some embodiments of this application. Figure 3 is a structural schematic diagram of a battery device provided in some embodiments of this application. Figure 4 is a perspective view of a battery device provided in some embodiments of this application.

[0076] This application 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 to each other along a first direction X. The battery cell 10 is 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 body 211 and a cantilever beam 212 arranged at an included angle. The first wall body 211 is used to form the receiving cavity. The cantilever beam 212 is located outside the first wall body 211 and protrudes from the outer surface of the first wall body 211 in a direction away from the receiving cavity. The cantilever beam 212 is used to connect to a vehicle frame 200.

[0077] The housing 20 is used to provide a cavity for housing the battery cell 10.

[0078] The number of battery cells 10 is multiple, and the multiple battery cells 10 can be connected in series, in parallel, or in a mixed manner. A mixed connection means that the multiple battery cells 10 are connected in both series and parallel. The battery device 100 may also include other structures, such as a busbar component for realizing the electrical connection between the multiple battery cells 10.

[0079] The two first walls 21 are two walls that constitute the housing 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.

[0080] The first wall 211 and the cantilever beam 212 are arranged at an angle. The cantilever beam 212 is a beam located outside the receiving cavity. The cantilever beam 212 protrudes from the outer surface of the first wall 211. The cantilever beam 212 may have a certain size in the first direction X so that the cantilever beam 212 can be connected to the adapter bracket.

[0081] 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 less 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-mounted connection, 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 some space overlap in the height direction, which can also reduce the space occupied by the battery device 100 in the first direction X, making the space occupied by the battery device 100 smaller and improving the space utilization rate of the frame 200.

[0082] In some embodiments, the connection between the cantilever beam 212 and the first wall 211 can be 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.

[0083] In some embodiments, the cantilever beam 212 may be arranged perpendicularly to the first wall 211, and the cantilever beam 212 occupies a small space in the first direction X.

[0084] According to some embodiments of this application, the first wall 211 and the cantilever beam 212 are integrally formed.

[0085] The first wall 211 can be integrally extruded with the cantilever beam 212.

[0086] In the above scheme, the first wall 211 and the cantilever beam 212 are integrally formed, and the cantilever beam 212 is firmly connected to the first wall 211, which facilitates the improvement of the connection reliability between the cantilever beam 212 and the frame 200.

[0087] According to some embodiments of this application, the box 20 includes a first box 20a and a second box 20b disposed opposite to each other along a second direction Y. The first box 20a and the second box 20b are fastened together to form a receiving cavity. The second box 20b is located above the first box 20a. The first box 20a includes a bottom wall 22 and a side wall 23. The side wall 23 surrounds the bottom wall 22. The side wall 23 includes two first walls 21 disposed opposite to each other along a first direction X. The second direction Y is parallel to the direction of gravity.

[0088] The first box 20a and the second box 20b are distributed in the second direction Y. The first box 20a can be the lower box and the second box 20b can be the box cover.

[0089] The first housing 20a and the second housing 20b are fastened together to form a cavity for accommodating the battery cell 10. The first housing 20a and the second housing 20b are separately disposed to facilitate the assembly of the battery cell 10 with the housing 20.

[0090] The side wall 23 surrounds the bottom wall 22. One end of the side wall 23 is connected to the bottom wall 22, and the other end of the side wall 23 forms an opening, which is covered by the second box 20b.

[0091] The two first walls 21 are two walls that constitute the side wall 23. The cantilever beam 212 is set in the first housing 20a. When the battery device 100 is assembled with the frame 200, the adapter bracket is connected to the cantilever beam 212 set in the first housing 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.

[0092] In the above scheme, the first housing 20a and the second housing 20b are arranged opposite each other along the second direction Y. The second housing 20b is located above the first housing 20a. The cantilever beam 212 is located on the side wall 23 of the first housing 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 under the frame 200.

[0093] According to some embodiments of this application, along the first direction X, the maximum dimension of the cantilever beam 212 is D, which satisfies 40mm≤D≤80mm.

[0094] The width direction of the cantilever beam 212 can be parallel to the first direction X, and the dimension of the cantilever beam 212 in the first direction X can be the width of the cantilever beam 212.

[0095] The maximum dimension of the cantilever beam 212 in the first direction X determines 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 makes it easier for the cantilever beam 212 and the adapter bracket to be firmly connected.

[0096] Optionally, the maximum dimension D of the cantilever beam 212 in the first direction X can be any one value or a range between any two values ​​of 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, and 80mm.

[0097] Optionally, the 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.

[0098] In the above scheme, the maximum dimension of the cantilever beam 212 in the first direction X satisfies the above relationship. Under the condition that the cantilever beam 212 and the adapter have a large connection area, the space occupied by the cantilever beam 212 in the first direction X is small.

[0099] According to some embodiments of this application, the maximum dimension of the cantilever beam 212 along the second direction Y is H, which satisfies 20mm≤H≤40mm, and the second direction Y is parallel to the direction of gravity.

[0100] The thickness direction of the cantilever beam 212 can be parallel to the second direction Y, and the dimension of the cantilever beam 212 in the second direction Y can be the thickness of the cantilever beam 212.

[0101] Optionally, the maximum dimension H of the cantilever beam 212 in the second direction Y can be any one value or a range between any two values ​​from 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, and 40mm.

[0102] Optionally, the 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.

[0103] In the above scheme, 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 weight of the cantilever beam 212 is relatively light.

[0104] In some embodiments, the cantilever beam 212 extends along a 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 points in the third direction Z to improve the connection reliability between the cantilever beam 212 and the frame 200.

[0105] Please refer to Figure 5, which is a cross-sectional view of a battery device provided in some embodiments of this application. According to some embodiments of this application, the battery cell 10 includes a first battery cell 11 and a second battery cell 12, which are disposed in a receiving cavity along a second direction Y, which is parallel to the direction of gravity.

[0106] In some embodiments, the first battery cell 11 is located below the second battery cell 12.

[0107] Inside the housing 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 make use of the space inside the housing 20 in the second direction Y, thereby improving the energy density of the battery device 100.

[0108] Please refer to Figures 3 to 5, and further refer to Figures 6 and 7. Figure 6 is a schematic diagram of the assembly of the adapter bracket and the cantilever beam provided in some embodiments of this application, and Figure 7 is a schematic diagram of the adapter bracket connecting the cantilever beam and the vehicle frame provided in some embodiments of this application. According to some embodiments of this application, this application also provides a vehicle 1000, which includes a vehicle frame 200, an adapter bracket 500, and a battery device 100 provided according to any of the above embodiments. The cantilever beam 212 and the first wall 211 enclose an installation space 213, 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 vehicle frame 200 through the adapter bracket 500.

[0109] The installation space 213 is located on the side of the cantilever beam 212 away from the ground, and the wall of the cantilever beam 212 away from the ground and the outer surface of the first wall 211 enclose the installation space 213.

[0110] In some embodiments, the cantilever beam 212 is arranged perpendicularly to the first wall 211. The cantilever beam 212 has a first surface that encloses the installation space 213. The adapter bracket 500 is connected to the first surface. The first surface is perpendicular to the direction of gravity, which facilitates the connection between the adapter bracket 500 and the cantilever beam 212 and makes the connection between the adapter bracket 500 and the cantilever beam 212 stable.

[0111] In the above scheme, 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 so as to reduce the space occupied by the battery device 100 under the frame 200 and improve the space utilization of the frame 200.

[0112] Please refer to Figures 6 and 7, and further to Figures 8 and 9. Figure 8 is a structural schematic diagram of the adapter bracket provided in some embodiments of this application, and Figure 9 is a partial enlarged view of point A in Figure 7. According to some embodiments of this application, the adapter bracket 500 includes a main body 51 and a flanged part 52. The flanged part 52 is folded from the edge of the main body 51 toward the first wall 211. The flanged part 52 is connected to the cantilever beam 212, and the main body 51 is connected to the frame 200.

[0113] The adapter bracket 500 can be integrally bent from a sheet metal, with the flanged portion 52 bent relative to the main body portion 51 to facilitate the connection between the adapter bracket 500 and the cantilever beam 212 and the frame 200.

[0114] The flange 52 is formed on the edge of the main body 51 and folds toward the first wall 21. Along the first direction X, the main body 51 is located at the end of the flange 52 that is away from the first wall 211.

[0115] In the above scheme, the main body 51 and the flanged part 52 are integrally formed, and the adapter bracket 500 has high overall strength; the flanged part 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 makes assembly convenient.

[0116] In some embodiments, the flange 52 may also be folded from the edge of the main body 51 toward the direction away from the first wall 211. In this case, along the first direction X, the main body 51 is located at the end of the flange 52 that is close to the first wall 211.

[0117] In some embodiments, the flange portion 52 is arranged parallel to the cantilever beam 212. The flange portion 52 may be parallel to the first surface of the cantilever beam 212 that forms the mounting space 213. The surface of the flange portion 52 facing the cantilever may be in contact with the first surface to facilitate the connection between the flange portion 52 and the cantilever beam 212.

[0118] In some embodiments, the flange portion 52 may be arranged perpendicularly to the main body portion 51 in order to reduce space occupation.

[0119] Referring to Figures 4, 7, and 8, according to some embodiments of this 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 portion 51 is provided with a third mounting hole 511, the frame 200 is provided with a fourth mounting hole 210 corresponding to the third mounting hole 511, and the battery device 100 further includes a first locking member and a second locking member; the first locking member passes 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 passes through the third mounting hole 511 and the fourth mounting hole 210 to lock the main body portion 51 to the frame 200.

[0120] The first mounting hole 214 is a hole provided in the cantilever beam 212. The first mounting hole 214 can be a threaded hole or 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.

[0121] The second mounting hole 521 can be a through hole for the first locking member to pass through.

[0122] The first locking element can be a bolt, so that the first locking element can cooperate with the first mounting hole 214 and the second mounting hole 521.

[0123] The third mounting hole 511 can be a through hole for the second locking member to pass through.

[0124] The fourth mounting hole 210 can be a threaded hole or a through hole.

[0125] The second locking element can be a bolt, so that the second locking element can be engaged with the third mounting hole 511 and the fourth mounting hole 210.

[0126] In the above scheme, the flange 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.

[0127] Referring to Figures 4, 6, and 8, according to some embodiments of this application, the cantilever beam 212 extends along a third direction Z, and the third direction Z, the first direction X, and the gravity direction are perpendicular to each other. The cantilever beam 212 is provided with multiple sets of first mounting holes 214 spaced apart along the third direction Z. There are multiple adapter brackets 500, and each adapter bracket 500 corresponds to a set of first mounting holes 214. Each set of first mounting holes 214 includes multiple first mounting holes 214 spaced apart. The flange portion 52 is provided with multiple second mounting holes 521. There are multiple first locking members, and each first locking member passes through a second mounting hole 521 and a first mounting hole 214.

[0128] The length direction of the cantilever beam 212 can be parallel to the third direction Z.

[0129] Multiple sets of first mounting holes 214 are spaced apart along the third direction Z, providing connection points with the adapter bracket 500 at different positions along the third direction Z.

[0130] Multiple adapter brackets 500 can be spaced apart along the third direction Z so that multiple adapter brackets 500 can mate with multiple sets of first mounting holes 214.

[0131] Multiple first mounting holes 214 are spaced apart so that the flange 52 and the cantilever beam 212 can be connected at multiple locations.

[0132] In the above scheme, the cantilever beam 212 extends along the third direction Z to facilitate the connection between the cantilever beam 212 and the frame 200 at different positions along the third direction Z, thus ensuring a firm connection between the cantilever beam 212 and the frame 200. The flange portion 52 is connected to the cantilever beam 212 by multiple locking components to improve the reliability of the connection between the adapter bracket 500 and the cantilever beam 212.

[0133] In some embodiments, when the adapter bracket 500 mates 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.

[0134] Referring to Figures 4 and 8, according to some embodiments of this application, the number of first mounting holes 214 in at least one set of first mounting holes 214 is greater than the number of second mounting holes 521 in the corresponding adapter bracket 500, so that the second mounting holes 521 can correspond to the first mounting holes 214 at different positions.

[0135] In some embodiments, a plurality of first mounting holes 214 in each group of first mounting holes 214 are spaced apart along the third direction Z to facilitate connection of the flange portion 52 to the cantilever beam 212 at different positions in the third direction Z.

[0136] In at least one set of first mounting holes 214, the number 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. Depending on the assembly requirements, the second mounting holes 521 can be matched with the first mounting holes 214 at different positions on a third party.

[0137] In the above scheme, the second mounting hole 521 corresponds to the first mounting hole 214 at different positions, which facilitates the adaptation to assembly tolerances and improves assembly flexibility.

[0138] Please refer to Figures 6 to 8. According to some embodiments of this application, the main body 51 is provided with a plurality of third mounting holes 511, which are arranged in a matrix; the frame 200 is provided with a plurality of fourth mounting holes 210, and there are a plurality of second locking members, each of which passes through a third mounting hole 511 and a fourth mounting hole 210.

[0139] Multiple third mounting holes 511 are arranged in a matrix, which can realize the connection between the adapter bracket 500 and the frame 200 at different positions, increasing the connection area between the adapter bracket 500 and the frame 200.

[0140] In some embodiments, the plurality of third mounting holes 511 are arranged in a matrix in the second direction Y and the third direction Z.

[0141] 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, so that the adapter bracket 500 can be connected to the frame 200 at different positions of the frame 200.

[0142] In the above scheme, multiple third mounting holes 511 are arranged in a matrix to improve the connection reliability between the adapter bracket 500 and the frame 200.

[0143] According to some embodiments of this application, the wall thickness of the adapter bracket 500 is T, which satisfies 4mm≤T≤8mm.

[0144] The adapter bracket 500 can be formed by bending a sheet metal, and the wall thickness of the adapter bracket 500 is the thickness of the sheet metal.

[0145] For example, the thickness of the flange 52 and the thickness of the main body 51 are the same as the wall thickness of the adapter bracket 500.

[0146] Optionally, the wall thickness T of the adapter bracket 500 can be any one value or a range between any two values ​​from 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, and 8mm.

[0147] 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.

[0148] In the above scheme, the wall thickness of the adapter bracket 500 satisfies the above relationship, the adapter bracket 500 has high overall strength, which facilitates the improvement of 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.

[0149] Referring to Figure 8, according to some embodiments of this application, the adapter bracket 500 further includes a reinforcing rib 53, which connects the main body portion 51 and the flange portion 52.

[0150] 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 welded to the flange 52; or, the reinforcing rib 53 can be separately provided from the main body 51 and can be welded to the main body 51 and the flange 52 respectively.

[0151] In the above scheme, the setting of the reinforcing rib 53 can improve the connection reliability between the main body 51 and the flange 52, and facilitate the improvement of the overall strength of the adapter bracket 500.

[0152] In some embodiments, a plurality of reinforcing ribs 53 are provided, and the plurality of reinforcing ribs 53 are spaced apart along a third direction Z.

[0153] Referring to Figure 8, the plurality of 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 disposed from the main body 51 and is welded to the main body 51 and the flange 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 integrally formed with the main body 51. The second reinforcing ribs 532 are bent from the edge of the main body 51 toward the first wall 211 and are welded to the flange 52.

[0154] Please refer to Figures 7 to 9. According to some embodiments of this application, the reinforcing rib 53 is located in the mounting space 213. 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.

[0155] For ease of distinction, the mounting space 213 enclosed by the cantilever beam 212 and the first wall 211 is designated as the first mounting space 213. A second mounting space is formed between the main body 51 and the flanged portion 52. A portion of the frame 200 is located in the second mounting space. The reinforcing rib 53 is located within the first mounting space 213, and the limiting surface 533 is located at the end of the reinforcing rib 53 facing away from the flanged portion 52, so that the limiting surface 533 can cooperate with the frame 200.

[0156] The frame 200 contacts the limiting surface 533. When the frame 200 is subjected to torsion, the reinforcing rib 53 can abut against the frame 200, absorb the force transmitted by the frame 200, and reduce the risk of the torsional force of the frame 200 damaging the battery device 100.

[0157] In the above scheme, the setting of the limiting surface 533 can absorb the vibration of the vehicle 1000 during driving, reduce the force transmitted from the frame 200 to the battery device 100, and thus reduce the risk of damage to the battery device 100 caused by the torsion of the frame 200.

[0158] In some embodiments, the frame 200 may have a gap with the limiting surface 533 to accommodate assembly tolerances.

[0159] According to some embodiments of this application, referring to Figures 3 to 9, this application provides a battery device 100 for connection to an adapter bracket 500. The battery device 100 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 disposed 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 body 211 and a cantilever beam 212 disposed at an included angle. The first wall body 211 forms the receiving cavity, and the cantilever beam 212 is located outside the first wall body 211 and protrudes from the outer surface of the first wall body 211 in a direction away from the receiving cavity. The cantilever beam 212 is used for connection to a vehicle frame 200.

[0160] 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 multiple sets of first mounting holes 214 spaced apart along the third direction Z. Each set of first mounting holes 214 includes multiple first mounting holes 214 spaced apart along the third direction Z.

[0161] When the battery device 100 is assembled with the vehicle frame 200, the connection between the battery device 100 and the vehicle frame 200 can be achieved through multiple 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 flanged portion 52. The flanged portion 52 is folded from the edge of the main body 51 toward the first wall 211. The flanged portion 52 is provided with multiple second mounting holes 521 corresponding to the first mounting hole 214. The flanged portion 52 and the cantilever beam 212 are connected by a first locking member passing through the second mounting holes 521 and the first mounting holes 214. The main body 51 is provided with multiple third mounting holes 511, and the vehicle frame 200 is provided with multiple fourth mounting holes 210 corresponding to the third mounting holes 511. The main body 51 and the vehicle frame 200 are connected by a second locking member passing through the third mounting holes 511 and the fourth mounting holes 210.

[0162] According to the battery device 100 provided in the embodiments of this application, the cantilever beam 212 is connected to the vehicle frame 200 through the adapter bracket 500, changing the connection method between the battery device 100 and the vehicle frame 200 to a bottom-mounted connection. The connection position between the battery device 100 and the vehicle 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 vehicle frame 200 have a large overlap size. The space occupied by the battery device 100 under the vehicle frame 200 is smaller, which makes the space occupied by the battery device 100 smaller and improves the space utilization of the vehicle frame 200.

[0163] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, comprising: a battery cell; a box having a receiving cavity in which the battery cell is received, the box comprising two first walls oppositely arranged along a first direction, the battery cell being arranged between the two first walls, the first direction being perpendicular to a direction of gravity; wherein each of the first walls comprises a first wall body arranged at an angle and a cantilever beam, the first wall body being used to enclose the receiving cavity, the cantilever beam being located outside the first wall body and protruding from an outer surface of the first wall body in a direction away from the receiving cavity, the cantilever beam being used to connect with a vehicle frame.

2. The battery device of claim 1, wherein, The first wall body and the cantilever beam are integrally formed.

3. The battery device according to claim 1 or 2, wherein The box comprises a first box and a second box oppositely arranged along a second direction, the first box and the second box being fastened to form the receiving cavity, the second box being located above the first box, the first box comprising a bottom wall and a side wall, the side wall being arranged around the bottom wall, the side wall comprising two first walls oppositely arranged along the first direction, the second direction being parallel to the direction of gravity.

4. The battery device according to any one of claims 1 to 3, wherein In the first direction, a maximum dimension of the cantilever beam is D, satisfying 40mm≤D≤80mm.

5. The battery device according to any one of claims 1 to 4, wherein In the second direction, a maximum dimension of the cantilever beam is H, satisfying 20mm≤H≤40mm, the second direction being parallel to the direction of gravity.

6. The battery device according to any one of claims 1 to 5, wherein The battery cell comprises a first battery cell and a second battery cell, the first battery cell and the second battery cell being arranged in the receiving cavity along a second direction, the second direction being parallel to the direction of gravity. 7.A vehicle, comprising: a vehicle frame; an adapter bracket; the battery device according to any one of claims 1 to 6, the cantilever beam and the first wall body enclosing a mounting space, at least a portion of the adapter bracket being arranged in the mounting space, the cantilever beam being connected to the vehicle frame through the adapter bracket.

8. The vehicle of claim 7, wherein, The adapter bracket comprises a main body portion and a folded edge portion, the folded edge portion being folded from an edge of the main body portion towards the first wall body, the folded edge portion being connected to the cantilever beam, the main body portion being connected to the vehicle frame.

9. The vehicle of claim 8, wherein, The cantilever beam is provided with a first mounting hole, the folded edge 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 vehicle frame is provided with a fourth mounting hole corresponding to the third mounting hole, the battery device further comprising a first locking member and a second locking member; The first locking member is arranged through the second mounting hole and the first mounting hole to lock the folded edge portion to the cantilever beam; The second locking member is arranged through the third mounting hole and the fourth mounting hole to lock the main body portion to the vehicle frame.

10. The vehicle of claim 9, wherein, The cantilever beam extends along a third direction, the third direction, the first direction and the direction of gravity being perpendicular to each other, the cantilever beam being provided with a plurality of groups of first mounting holes arranged at intervals along the third direction, the number of the adapter brackets being a plurality, each of the adapter brackets corresponding to a group of the first mounting holes. Each group of the first mounting holes comprises a plurality of 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 plural, and each first locking member is arranged through one second mounting hole and one first mounting hole.

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

12. The vehicle of any one of claims 9-11, wherein, The main body portion is provided with a plurality of third mounting holes, and the third mounting holes are arranged in a matrix. The vehicle frame is provided with a plurality of fourth mounting holes, and the number of the second locking members is plural, and each second locking member is arranged through one third mounting hole and one fourth mounting hole.

13. The vehicle of any one of claims 8-12, wherein, The wall thickness of the adapter support is T, and 4mm≤T≤8mm is satisfied.

14. The vehicle of any one of claims 8-13, wherein, The adapter support further comprises a reinforcing rib, and the reinforcing rib connects the main body portion and the flange portion.

15. The vehicle of claim 14, wherein, The reinforcing rib is located in the mounting space, one end of the reinforcing rib connected with the main body portion forms a limiting surface, and the vehicle frame is in contact with the limiting surface.

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